阅读说明：本技术 一种多级海水滤芯、海水滤器及使用方法 (Multistage seawater filter element, seawater filter and use method ) 是由 段仲兵 刘益平 黄深 苟英迪 于 2021-04-28 设计创作，主要内容包括：本发明涉及海水过滤器技术领域,公开了一种多级海水滤芯、海水滤器及使用方法,所述多级海水滤芯包括：驱动机构、第一滤网、第一密封件、第二滤网、第二密封件、第三滤网及滤器底板；该海水滤芯体积小,多功能,滤芯可以进行反冲洗和旋转变换滤孔位置,适用于船舶和海洋工程技术领域,用于提取充足的海水用于船舶或海洋工程平台的海水系统、压载系统和其他船舶辅助系统,有效防止海洋垃圾或污物进入船舶系统内部,并将海洋垃圾或污物有效排出,防止船舶系统故障。(The invention relates to the technical field of seawater filters, and discloses a multistage seawater filter element, a seawater filter and a using method, wherein the multistage seawater filter element comprises: the filter comprises a driving mechanism, a first filter screen, a first sealing element, a second filter screen, a second sealing element, a third filter screen and a filter bottom plate; this sea water filter core is small, and is multi-functional, and the filter core can carry out back flush and rotatory transform filtration pore position, is applicable to boats and ships and ocean engineering technical field for extract sufficient sea water and be used for the sea water system, the ballast system and other boats and ships auxiliary system of boats and ships or ocean engineering platform, prevent effectively that marine waste or filth from getting into inside the boats and ships system, and effectively discharge marine waste or filth, prevent boats and ships system trouble.)

1. A multistage seawater filter element, comprising:

a drive mechanism;

the upper part of the first filter screen is connected with the lower part of the driving mechanism, and the driving mechanism can drive the first filter screen to rotate;

a first sealing member, an upper end surface of which is connected with a lower portion of the first screen;

the upper part of the second filter screen is connected with the lower end face of the first sealing element;

the upper end surface of the second sealing element is connected with the lower part of the second filter screen;

the upper part of the third filter screen is connected with the lower end face of the second sealing element;

a strainer bottom plate installed at a lower portion of the third screen;

a plurality of first filtration pores have been seted up on the first filter screen, a plurality of second filtration pores have been seted up on the second filter screen, a plurality of third filtration pores have been seted up on the third filter screen, the aperture of first filtration pore is d1, the aperture of second filtration pore is d2, the aperture of third filtration pore is d3, wherein d1 < d2 < d 3.

2. The multistage seawater filter element of claim 1, wherein the driving mechanism comprises a motor, a motor shaft, a harmonic reducer, and a low speed output, the motor is connected to the motor shaft, the low speed output is connected to the motor shaft through the harmonic reducer, the low speed output is connected to the first screen, and the motor shaft passes through the harmonic reducer, the low speed output, the first screen, the first sealing member, the second screen, the second sealing member, and the third screen in sequence.

3. The multistage seawater filter element of claim 2, further comprising a plurality of washing pipes, wherein each washing pipe is respectively disposed in the first filter screen, the second filter screen and the third filter screen, a conveying cavity is formed inside the motor shaft, and each washing pipe is respectively connected to the conveying cavity.

4. The multistage seawater filter element of claim 3 wherein a connecting pipe is connected to the top of the motor shaft and is communicated with the delivery cavity, and the connecting pipe is used for connecting a compressed air pipe, a high pressure steam pipe or a high pressure fresh water pipe.

5. The multistage seawater filter element of claim 3, wherein a vacuum suction port is formed around the bottom of the motor shaft.

6. The multistage seawater filter element of claim 5, wherein the motor shaft is provided with a plurality of pipeline connecting holes which are connected with the cleaning pipes in a one-to-one matching way, and a partition plate is arranged between the connecting hole at the lowest end of the motor shaft and the vacuum suction port.

7. The multistage seawater filter core of claim 2, wherein the upper part of the motor shaft is provided with a cam i cooperatively connected with the low-speed output end, the middle part of the motor shaft is provided with a cam ii cooperatively connected with the first sealing member, the lower part of the motor shaft is provided with a cam iii cooperatively connected with the second sealing member, and the motor shaft can rotate at a high speed relative to the low-speed output end, the first sealing member and the second sealing member.

8. The multistage seawater filter element of claim 1, wherein the first filtering hole has a pore size of 50 μm or more and d1 or more and 100 μm or less, the second filtering hole has a pore size of 100 μm or more and d2 or more and 500 μm or less, and the third filtering hole has a pore size of d 5mm or less.

9. A seawater filter, comprising a body and the multi-stage seawater filter element as claimed in any one of claims 1 to 8, wherein the body has a plurality of independent filtering channels arranged side by side, each filtering channel is arranged corresponding to the first, second and third filtering screens, and each filtering channel comprises a water inlet and a water outlet.

10. A method for using a seawater filter, which is characterized by comprising the following steps of:

the seawater enters the corresponding filtering channel through each independent water inlet, and is discharged from the water outlet after being filtered by the corresponding first filter screen, the second filter screen or the third filter screen in the filtering channel.

Technical Field

The invention relates to the technical field of seawater filters, in particular to a multistage seawater filter element, a seawater filter and a using method.

Background

When the seawater cooling system of the traditional ship and ocean engineering platform is designed, most of the adopted seawater filter cores are single-connection coarse filter cores, only seawater sediment or suspended matters with the granularity larger than 5mm can be filtered, especially in offshore or shallow water areas, a large number of small particles easily enter the cooling system through a seawater filter, the blockage of a seawater cooler and the accelerated abrasion of a seawater pump blade are caused, the normal operation of a seawater system is influenced, the serious blockage condition can lead to the overhigh temperature of a seawater outlet, the high-temperature alarm of ship equipment is caused, the shutdown and the overheating alarm of the equipment are caused, the normal navigation of the ship is influenced, and even the ship is caused to be paralyzed.

At present, the marine seawater filter core design for ships can not effectively filter and remove marine garbage, particularly, the seawater sediment or suspended matters with fine particle size can not meet the cleaning requirement after filtering, so that more filters are added to clean seawater, and a seawater system is easy to block.

Disclosure of Invention

The purpose of the invention is: the utility model provides a multistage sea water filter core, its is small, and is multi-functional, and the filter core can carry out back flush and rotatory transform filtration pore position, is applicable to boats and ships and ocean engineering technical field for draw sufficient sea water and be used for the sea water system, the ballast system and other boats and ships auxiliary system of boats and ships or ocean engineering platform, effectively prevent that marine waste or filth from getting into inside the marine system, and effectively discharge marine waste or filth, prevent the trouble of marine system.

In order to achieve the above object, the present invention provides a multistage seawater filter cartridge, comprising: the filter comprises a driving mechanism, a first filter screen, a first sealing element, a second filter screen, a second sealing element, a third filter screen and a filter bottom plate;

the upper part of the first filter screen is connected with the lower part of the driving mechanism, and the driving mechanism can drive the first filter screen to rotate;

the upper end surface of the first sealing element is connected with the lower part of the first filter screen;

the upper part of the second filter screen is connected with the lower end face of the first sealing element;

the upper end surface of the second sealing element is connected with the lower part of the second filter screen;

the upper part of the third filter screen is connected with the lower end face of the second sealing element;

the filter bottom plate is arranged at the lower part of the third filter screen;

a plurality of first filtration pores have been seted up on the first filter screen, a plurality of second filtration pores have been seted up on the second filter screen, a plurality of third filtration pores have been seted up on the third filter screen, the aperture of first filtration pore is d1, the aperture of second filtration pore is d2, the aperture of third filtration pore is d3, wherein d1 < d2 < d 3.

In some embodiments, the driving mechanism includes a motor, a motor shaft, a harmonic reducer, and a low-speed output, the motor is connected to the motor shaft, the low-speed output is connected to the motor shaft through the harmonic reducer, the low-speed output is connected to the first filter screen, and the motor shaft sequentially passes through the harmonic reducer, the low-speed output, the first filter screen, the first sealing element, the second filter screen, the second sealing element, and the third filter screen.

In some embodiments, the washing machine further includes a plurality of washing pipes, each of the washing pipes is disposed in the first filter screen, the second filter screen, and the third filter screen, a conveying cavity is formed inside the motor shaft, and each of the washing pipes is connected to the conveying cavity.

In some embodiments, a connecting pipe is connected to the top of the motor shaft and is communicated with the conveying cavity, and the connecting pipe is used for connecting a compressed air pipe, or a high-pressure steam pipe or a high-pressure fresh water pipe.

In some embodiments, a vacuum suction port is formed around the bottom of the motor shaft.

In some embodiments, the motor shaft is provided with a plurality of pipeline connecting holes which are matched with the cleaning pipes one by one, and a partition plate is arranged between the connecting hole at the lowest end of the motor shaft and the vacuum suction port.

In some embodiments, a cam i cooperatively connected with the low-speed output end is disposed at an upper portion of the motor shaft, a cam ii cooperatively connected with the first sealing member is disposed at a middle portion of the motor shaft, a cam iii cooperatively connected with the second sealing member is disposed at a lower portion of the motor shaft, and the motor shaft can rotate at a high speed relative to the low-speed output end, the first sealing member and the second sealing member.

In some embodiments, the first filter pores have a pore size of 50 μm d1 ≦ 100 μm, the second filter pores have a pore size of 100 μm d2 ≦ 500 μm, and the third filter pores have a pore size d ≦ 5 mm.

The seawater filter is characterized by comprising a body and the multistage seawater filter element, wherein a plurality of independent filtering channels which are arranged side by side are formed in the body, each filtering channel is respectively arranged corresponding to the first filter screen, the second filter screen and the third filter screen, and each filtering channel comprises a water inlet and a water outlet.

The method for using the seawater filter is characterized by comprising the following steps:

the seawater enters the corresponding filtering channel through each independent water inlet, and is discharged from the water outlet after being filtered by the corresponding first filter screen, the second filter screen or the third filter screen in the filtering channel.

Compared with the prior art, the multistage seawater filter element, the seawater filter and the use method provided by the invention have the beneficial effects that: the filtering performance is strong, and the cleanness of the seawater is good; the multistage seawater filter for the ship can continuously work and operate in a sea area with high marine garbage density or turbid seawater, the multistage seawater filter is divided into three stages of filtering, seawater enters a first seawater filtering area of a filtering cavity through a water inlet hole, a driving mechanism drives a first filter screen, a first sealing piece, a second filter screen, a second sealing piece and a third filter screen to synchronously rotate, the seawater enters a second seawater filtering area after being roughly filtered by the third filter screen, the seawater after being roughly filtered enters the third seawater filtering area after being finely filtered by the second filter screen, and the seawater after being finely filtered is discharged after being finely filtered by the first filter screen; the third filter screen can filter the particulate matters or suspended matters with the particle size of more than 5mm, the second filter screen can filter the particulate matters or suspended matters with the particle size of 100-500 microns, and the first filter screen can filter the particulate matters or suspended matters with the particle size of 50-100 microns;

the multistage seawater filter can realize double-speed rotation through a driving mechanism, a motor shaft connected with a motor rotates at a high speed to drive a cleaning pipe to rotate at a high speed, dirt or silt on the surface of a filter screen is automatically back-washed, a harmonic reducer converts the high speed into a low-speed output end to rotate at a low speed, and the low-speed output end drives the filter screen to rotate and interacts with a cutting knife to cut and crush soft objects such as fishing nets and plastics;

the filter device is simple to maintain, and spare parts such as a filter element, a cutting knife and the like can be easily replaced; the volume is small, and the structure is compact; the marine multistage seawater filter is in a narrow box shape, consists of a plurality of groups of filter elements, occupies small space, and can reserve more machine places and positions for installing other equipment.

Drawings

FIG. 1 is a schematic structural view of a seawater strainer of the present invention;

FIG. 2 is a top view of the seawater strainer of the present invention;

FIG. 3 is a sectional view taken along line A-A of the seawater strainer of the present invention;

FIG. 4 is a sectional view taken along line B-B of the seawater strainer of the present invention;

FIG. 5 is a sectional view taken along line C-C of the seawater strainer of the present invention;

FIG. 6 is a schematic view of the main body structure of the present invention;

FIG. 7 is a schematic view of the driving mechanism of the present invention;

FIG. 8 is a schematic view of a rigid wheel of the present invention;

FIG. 9 is a schematic view of a flexspline of the present invention;

FIG. 10 is a schematic view of the low speed output of the present invention;

FIG. 11 is a schematic view of a motor shaft water sealing block III of the present invention;

FIG. 12 is a schematic view of the motor shaft of the present invention;

FIG. 13 is a schematic view of a motor shaft watertight block I and a motor shaft watertight block II according to the present invention;

FIG. 14 is a schematic view of a first and second screen watertight block of the present invention;

FIG. 15 is a schematic view of a cartridge seal block I of the present invention;

fig. 16 is a schematic view of a first baffle of the present invention;

FIG. 17 is a schematic view of cartridge seal block II of the present invention;

fig. 18 is a schematic view of a second baffle of the present invention;

FIG. 19 is a schematic view of a strainer tray of the present invention;

FIG. 20 is a schematic view of a coupling flange according to the present invention;

FIG. 21 is a schematic view of a strainer base plate of the present invention;

FIG. 22 is a schematic view of an S-shaped flow path of a seawater strainer according to the present invention;

FIG. 23 is a schematic view of an independent flow path of a seawater strainer of the present invention.

In the figure, 1, a body; 101. a top plate; 102. an arc guide plate I; 103. a front end plate; 104. a base plate; 105. a circular arc guide plate II; 106. a rear end plate; 107. a left side plate; 108. a right side plate; 109. water-tight holes I; 110. a water tight tank I; 111. a ball rotating groove I; 112. a water tight tank II; 113. a through hole I; 114. a seawater circulation through hole; 115. a filter element mounting groove; 116. fixing grooves; 117. a through hole II; 118. connecting a seat plate I; 2. a motor; 201. a front end cover; 202. a linker; 203. a flexible gear fixing seat; 204. a motor housing; 205. a motor rear cover; 206. a motor stator; 207. a motor rotor; 208. a rotating speed encoder fixing frame; 209. a rotating speed encoder; 210. a rotary speed encoder grid; 211. the outer part of the hollow motor shaft is connected with a pipe seat plate; 212. a ball bearing; 213. a ventilation through hole; 214. a fan; 215. an air inlet; 216. an angle encoder; 217. an angle encoder grating; 218. pressing blocks on the crossed roller bearing; 219. a crossed roller bearing roller; 220. a mechanical watertight sealing ring V; 221. a rigid wheel; 22101. internal teeth; 222. a flexible gear; 22201. an outer tooth; 223. a wave generator; 224. a thin-walled roller bearing; 225. a mechanical watertight sealing ring VI; 226. a watertight block ball V; 227. a mechanical watertight sealing ring VII; 228. a hollow motor shaft watertight block III; 22801. a groove of the watertight block III; 22802. a central through hole of the watertight block III; 22803. a water tight tank VIII; 22804. a ball rotating groove IV; 22805. a threaded hole II; 229. a low speed output; 22901. an output end groove I; 22902. an output end groove II; 22903. an output end groove III; 22904. a water-tight tank III; 22905. a ball rotating groove II; 22906. a threaded hole I; 22907. a flange; 22908. a water tight tank IV; 22909. a ball rotating groove III; 22910. a water tight tank V; 22911. a central through hole II; 22912. a water-tight tank VI; 22913. a cross roller mounting groove I; 230. a watertight block ball VI; 231. a watertight block ball VII; 232. a mechanical watertight sealing ring VIII; 233. a mechanical watertight sealing ring IX; 234. a motor watertight seat plate; 23401. a motor watertight seat plate mounting hole; 23402. a watertight seat plate and a watertight groove I of the motor; 23403. a motor watertight seat plate groove; 23404. a central through hole of the motor watertight seat plate; 23405. a watertight seat plate and a watertight groove II of the motor; 23406. a ball rotating groove I of a watertight seat plate of the motor; 23407. a watertight seat plate and a watertight groove III of the motor; 3. a motor shaft; 301. a hollow shaft recess; 302. a shoulder I; 303. a shoulder II; 304. a shoulder III; 305. a shoulder IV; 306. a shoulder V; 307. a shoulder VI; 308. a cam I; 309. a ball rotation groove V; 310. a water tight groove IX; 311. a water-tight groove X; 312. the ball rotating groove VI; 313. a pipeline connecting hole; 314. a cam II; 315. a water-tight tank XI; 316. the ball rotating groove VII; 317. a ball rotation groove VIII; 318. a water-tight trough XII; 319. a cam III; 320. water-tight cell XIII; 321. a ball rotating groove IX; 322. ball rotation groove X; 323. water-tight channel xiv; 324. a partition panel; 325. a vacuum suction port; 4. a first filter screen; 5. a second filter screen; 6. a third filter screen; 7. cleaning the tube; 8. fixing the rod; 9. a motor shaft watertight block I; 901. a ball turning groove XI; 902. water-tight cell XV; 903. a central through hole III; 10. a mechanical watertight sealing ring I; 11. a watertight block ball I; 12. a first filter screen watertight block; 1201. a ball rotation groove XII; 1202. water-tight cell xvi; 1203. a central through hole IV; 13. a mechanical watertight sealing ring II; 14. a watertight block ball II; 15. a filter element sealing block I; 1501. a filter element sealing block ball rotation groove I; 1502. a filter element sealing block water-tight groove I; 1503. a filter element sealing block shoulder I; 1504. a filter element sealing block groove I; 1505. a filter element sealing block groove II; 1506. a filter element sealing block ball rotation groove II; 1507. a filter element sealing block water-tight groove II; 1508. a central through hole I of the filter element sealing block; 1509. a filter element sealing block ball rotation groove III; 1510. a filter element sealing block water-tight groove III; 16. a first baffle; 1601. a circular arc guide plate III; 1602. a filter element sealing block I is arranged in the groove; 1603. a first baffle through hole; 1604. the first guide plate is a water tight tank; 1605. a first deflector ball rotation groove; 17. a motor shaft watertight block II; 1701. ball rolling grooves XIII; 1702. water-tight cell XVII; 1703. a central through hole V; 18. a second filter screen watertight block; 1801. ball rolling grooves xiv; 1802. water-tight channel XVIII; 1803. a central through hole VI; 19. a mechanical watertight sealing ring III; 20. a watertight block ball III; 21. a mechanical watertight sealing ring IV; 22. a watertight block ball IV; 23. a filter element sealing block II; 2301. a filter element sealing block ball rotation groove IV; 2302. a filter element sealing block water tight tank IV; 2303. a filter element sealing block shoulder II; 2304. a filter element sealing block groove III; 2305. a filter element sealing block groove IV; 2306. a ball rotation groove V of the filter element sealing block; 2307. a filter element sealing block water-tight groove V; 2308. a central through hole II of the filter element sealing block; 2309. the ball rotation groove VI of the filter element sealing block; 2310. a filter element sealing block water-tight groove VI; 24. a second baffle; 2401. a flow guide circular arc plate IV; 2402. a filter element sealing block II is arranged in the groove; 2403. a second baffle through hole; 2404 a second guide plate water tight tank; 2405. a second deflector ball rotation groove; 25. a filter base plate; 2501. a central through hole VII; 26. a double ball bearing; 27. cutting; 28. a cutting knife reinforcing rib; 29. a flow guide channel; 30. a connecting flange; 31. connecting rib plates; 32. a third seawater output pipe; 33. a second seawater output pipe; 34. a first seawater output pipe; 35. a connecting pipe; 36. a compressed air pipe; 37. a high pressure steam pipe; 38. a high-pressure fresh water pipe; 39. a first pressure sensor; 40. a second pressure sensor; 41. a third pressure sensor; 42. a fourth pressure sensor; 43. a first seawater inlet vacuum sewage pumping pipe; 44. a fourth seawater inlet vacuum sewage pumping pipe; 45. a second seawater inlet vacuum sewage pumping pipe; 46. a third seawater inlet vacuum sewage pumping pipe;

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 7, the present invention provides a multistage seawater filter cartridge, which comprises a driving mechanism, a first filter screen 4, a first sealing member, a second filter screen 5, a second sealing member, a third filter screen 6 and a filter bottom plate 25; the upper part of the first filter screen 4 is connected with the lower part of the driving mechanism, and the driving mechanism can drive the first filter screen 4 to rotate; the upper end surface of the first sealing element is connected with the lower part of the first filter screen 4; the upper part of the second filter screen 5 is connected with the lower end face of the first sealing element; the upper end surface of the second sealing element is connected with the lower part of the second filter screen 5; the upper part of the third filter screen 6 is connected with the lower end face of the second sealing element; the strainer bottom plate 25 is mounted on the lower portion of the third strainer 6; a plurality of first filtration pores have been seted up on first filter screen 4, a plurality of second filtration pores have been seted up on second filter screen 5, a plurality of third filtration pores have been seted up on third filter screen 6, the aperture of first filtration pore is d1, the aperture of second filtration pore is d2, the aperture of third filtration pore is d3, wherein d1 < d2 < d 3.

In some embodiments, the driving mechanism includes a motor 2, a motor shaft 3, a harmonic reducer, and a low speed output 229, the motor 2 is connected to the motor shaft 3, the low speed output 229 is connected to the motor shaft 3 through the harmonic reducer, the low speed output 229 is connected to the first screen 4, and the motor shaft 3 passes through the harmonic reducer, the low speed output 229, the first screen 4, the first seal, the second screen 5, the second seal, and the third screen 6 in sequence. Motor 2 specifically is two rotational speed output motor, and motor shaft 3 is the cavity motor shaft, and first sealing member is filter core sealing block I15, and the second sealing member is filter core sealing block II 23.

The seawater filter device comprises a plurality of groups of filter units consisting of a double-rotating-speed output motor 2, a hollow motor shaft 3, a first filter screen 4, a second filter screen 5, a third filter screen 6, a cleaning pipe 7, a fixing rod 8, a hollow motor shaft watertight block I9, a mechanical watertight sealing ring I10, a watertight block ball I11, a first filter screen watertight block 12, a mechanical watertight sealing ring II 13, a watertight block ball II 14, a hollow motor shaft watertight block II 17, a second filter screen watertight block 18, a mechanical watertight sealing ring III 19, a watertight block ball III 20, a mechanical watertight sealing ring IV 21, a mechanical watertight block ball IV 22, a filter bottom plate 25 and a double-ball bearing 26; the multi-group filter unit is arranged on the body 1;

the double-rotating-speed output motor 2 comprises a front end cover 201, a connecting body 202, a flexible wheel fixing seat 203, a motor shell 204, a motor rear cover 205, a motor stator 206, a motor rotor 207, a rotating speed encoder fixing frame 208, a rotating speed encoder 209, a rotating speed encoder grid 210, a hollow connecting pipe seat plate 211, a ball bearing 212, a ventilation through hole 213, a fan 214, an air inlet 215, an angle encoder 216, an angle encoder grating 217, a cross roller bearing upper pressing block 218, a cross roller bearing roller 219, a mechanical watertight sealing ring V220, a rigid wheel 221, a flexible wheel 222, a wave generator 223, a thin-wall roller bearing 224, a mechanical watertight sealing ring VI 225, a watertight block ball V226, a mechanical watertight sealing ring VII 227, a hollow motor shaft watertight block III 228, a low-speed output end 229, a watertight block ball VI 230, a watertight block ball VII 231, a mechanical watertight sealing ring VIII 232, a low-speed output end, a watertight block VI 230, a watertight block ball VII and a generator, A mechanical watertight sealing ring IX 233 and a motor watertight seat plate 234;

the front end cover 201, the connecting body 202, the flexible gear fixing seat 203 and the motor shell 204 of the double-rotating-speed output motor 2 are fixedly connected; the front end cover 201 is fixedly connected with the top plate 101;

the front end cover 201 is fixedly connected with a motor watertight seat plate 234;

the side surface of the lower part of the motor shell 204 is provided with an air inlet 215, the top part of the motor shell is fixedly connected with a motor rear cover 205, and a motor stator 206 and a fixing groove of a rotating speed encoder fixing frame 208 are arranged inside the motor shell;

the rotating speed encoder 209 is fixed on the fixing frame 208 through the rotating speed encoder, and the fixing frame 208 is fixed in a fixing groove in the motor shell 204;

the double-rotating-speed output motor 2 further comprises a motor stator 206 and a motor rotor 207, wherein the motor stator 206 is fixedly connected in a fixing groove of the motor shell 204, the motor rotor 207 is fixed in a hollow shaft groove 301 of the hollow motor shaft 3, and the position of the motor rotor 207 corresponds to that of the motor stator 206;

a central through hole is formed in the middle of the motor rear cover 205, the ball bearing 212 is installed in the central through hole, a ventilation through hole 213 is further formed in the motor rear cover 205, and heat of the dual-rotation-speed output motor 2 is dissipated through the ventilation through hole 213;

the ball bearing 212 is a rolling bearing with a single-side water sealing function;

the hollow connecting pipe seat plate 211 is fixedly arranged at the upper part of a central through hole of the motor rear cover 205 and is sealed with the outer ring of the ball bearing 212;

the fan 214 is fixed on the shoulder of the hollow motor shaft 3, and when the fan rotates, external cold air enters from the air inlet 215 and discharges heat of the motor from the ventilation through hole 213;

the angle encoder 216 and the angle encoder grating 217 are arranged in a corresponding manner in the vertical direction, the angle encoder 216 is fixed on the inner side of the flexible gear fixing seat 203, the angle encoder grating 217 is fixed on the outer side of a rigid gear 221 of the harmonic reducer, and the angle encoder 216 and the angle encoder grating 217 monitor the rotating angle of the low-speed output end 229;

the cross roller bearing upper press block 218 is fixed on the front end cover 201, a cross roller mounting groove II of a cross roller bearing roller 219 is arranged on the contact surface of the cross roller bearing upper press block 218 and the front end cover 201, the position of the cross roller mounting groove II corresponds to that of a cross roller mounting groove I22913, a watertight groove VII of a mechanical watertight sealing ring V220 is further arranged on the cross roller bearing upper press block 218, and the watertight groove VII corresponds to that of a watertight groove VI 22912; the mechanical watertight sealing ring V220 is arranged between the watertight groove VII and the watertight groove VI 22912;

the crossed roller bearing roller 219 is arranged among the crossed roller bearing upper pressing block 218, the front end cover 201 and the low-speed output end 229 and combined into a set of crossed roller bearing;

the rigid gear 221, the flexible gear 222, the wave generator 223 and the thin-wall roller bearing 224, wherein the rigid gear 221 forms a harmonic reducer;

the wave generator 223 is an elliptical cam, a spherical rolling body is arranged between the wave generator 223 and the thin-wall roller bearing 224, and the wave generator 223 drives the thin-wall roller bearing 224 to rotate to form a bearing similar to the elliptical thin-wall bearing;

as shown in fig. 8, the rigid wheel 221 is annular, the inner wall of the rigid wheel 221 is an inner tooth 22101 with a small module tooth shape, the edge of the rigid wheel 221 is provided with a mounting through hole iii 22102, and the inner wall of the rigid wheel 221 is matched with the outer wall of the middle part of the flexible wheel 222; the rigid wheel 221 is fixedly connected with the low-speed output end 229 through a mounting through hole III 22102; the outer wall of the rigid wheel 221 is fixedly connected with an angle encoder grating 217;

referring to fig. 9, the outer surface of the middle of the flexible gear 222 is an external tooth 22201 with a small module tooth shape, the flexible gear 222 is hollow, the upper end surface of the flexible gear is provided with a central through hole i 22202 and an installation through hole i 22203, and the lower end surface of the flexible gear is provided with a through hole ii 22204; the flexible gear 222 is fixedly connected with the flexible gear fixing seat 203 through the mounting through hole II 22204;

the thin-wall roller bearing 224 of the harmonic generator is matched with the inner cavity of the flexible gear 222, the inner wall of the rigid gear 221 presents a small-module inner tooth 22101 and is matched with the outer surface of the middle part of the flexible gear 222 presents a small-module outer tooth 22201, when the motor drives the hollow motor shaft 3 to rotate, the wave generator 223 and the thin-wall roller bearing 224 are synchronously driven to rotate, the flexible gear 222 is forced to deform into an elliptic gear, the outer tooth 22201 of the flexible gear 222 is forced to be matched with the inner tooth 22101 of the rigid gear 221 at the position of the elliptic long shaft of the wave generator 223, the outer tooth 22201 of the flexible gear 222 is forced to be disengaged from the inner tooth 22101 of the rigid gear 221 at the elliptic short shaft part of the wave generator 223, the flexible gear 222 is forced to deform and synchronously rotate with the long shaft of the wave generator 223, finally, the rigid gear 221 forms meshing transmission with a fixed transmission ratio, and the rigid gear 221 is transmitted to the low-speed output end 229 to synchronously rotate with the low-speed output end 229;

the motor watertight seat plate (234) comprises a motor watertight seat plate mounting hole (23401), a motor watertight seat plate watertight groove I (23402), a motor watertight seat plate groove (23403), a motor watertight seat plate central through hole (23404), a motor watertight seat plate watertight groove II (23405), a motor watertight seat plate ball rotating groove I (23406) and a motor watertight seat plate watertight groove III (23407); the position of the motor watertight seat plate watertight groove II (23405) corresponds to that of the motor watertight groove IV (22908); the ball rotating groove I (23406) of the motor watertight seat plate corresponds to the ball rotating groove IV (22909) of the motor; the motor watertight seat plate water-tight groove III (23407) corresponds to the motor watertight groove V (22910), and the low-speed output end (229) of the motor rotates at a low speed relative to the motor watertight seat plate (234).

The mechanical watertight sealing ring VI 225 is arranged between the watertight groove IV 22908 of the low-speed output end 229 and the watertight groove II 23405 of the motor watertight seat plate 234, and the mechanical watertight sealing ring VI 225 is used for watertight sealing the low-speed output end 229 and the motor watertight seat plate 234;

the ball V226 of the watertight block is arranged between the ball rotating groove III 22909 of the low-speed output end 229 and the ball rotating groove I23406 of the motor watertight seat plate 234, and the low-speed output end 229 rotates in the motor watertight seat plate groove 23403 of the motor watertight seat plate 234;

the mechanical watertight sealing ring VII 227 is arranged between the watertight groove V22910 of the low-speed output end 229 and the watertight groove III 23407 of the motor watertight seat plate 234, and the mechanical watertight sealing ring VII performs watertight sealing on the low-speed output end 229 and the motor watertight seat plate 234;

referring to fig. 11, the hollow motor shaft watertight block iii 228 is of a half formula and is formed by combining two semicircular watertight blocks; a watertight block III groove 22801, a watertight block III center through hole 22802, a watertight groove VIII 22803, a ball rotating groove IV 22804 and a threaded hole II 22805 are formed in the hollow motor shaft, the position of the watertight groove VIII 22803 corresponds to the position of a watertight groove IX 310 of the hollow motor shaft 3, the position of the ball rotating groove IV 22804 corresponds to the position of a ball rotating groove V309 of the hollow motor shaft 3, the upper surface of a watertight block III 228 of the hollow motor shaft is fixedly connected with the flexible wheel 222 through a mounting through hole I22203, and the lower part of the watertight block III is inserted into an output end groove II 22902 of the low-speed output end 229;

referring to fig. 10, an output end groove i 22901, an output end groove ii 22902 and an output end groove iii 22903 are arranged at the upper part of the low-speed output end 229, the output end groove ii 22902 is matched with the hollow motor shaft watertight block iii 228, a mechanical watertight sealing ring ix 233 watertight groove iii 22904 and a watertight block ball vii 231 ball rotation groove ii 22905 are arranged on the output end groove iii 22903, and the output end groove iii 22903 is matched with a cam on the hollow motor shaft 3; the edge of the upper end face of the low-speed output end 229 is provided with a threaded hole I22906; a flange 22907 is arranged at the lower part of the low-speed output end 229, a watertight groove IV 22908, a ball rotation groove III 22909 and a watertight groove V22910 are arranged on the flange 22907, and the flange 22907 is matched with a motor watertight seat plate groove 23403 on the motor watertight seat plate 234; the bottom of the low-speed output end 229 is provided with a central through hole II 22911, and the hollow motor shaft 3 penetrates through the central through hole II 22911; the side surface of the low-speed output end 229 is provided with a watertight groove VI 22912 of a mechanical watertight sealing ring V220 and a cross roller mounting groove I22913 of a cross roller bearing roller 219.

The double-speed output motor 2, the motor stator 206 and the motor rotor 207 interact with each other to drive the hollow motor shaft 3 to rotate at a high speed to form a high-speed rotation output end; the hollow motor shaft 3 drives the wave generator to rotate 223 at a high speed, and the low-speed output end 229 rotates at a low speed under the deceleration action of the harmonic reducer.

Referring to fig. 12, the hollow motor shaft 3 is hollow inside and recessed outside, and includes: the hollow shaft comprises a hollow shaft groove 301, a shoulder I302, a shoulder II 303, a shoulder III 304, a shoulder IV 305, a shoulder V306, a shoulder VI 307, a cam I308, a pipeline connecting hole 313, a cam II 314, a cam III 319, a partition plate 324 and a vacuum suction port 325;

the hollow motor shaft 3 is characterized in that a motor rotor 207 is fixed on a hollow shaft groove 301, a rotating speed encoder grid 210 is fixed on a shoulder II 303, a fan 214 is fixed on a shoulder III 304, and a wave generator 223 is fixed on a shoulder V306;

the upper surface of the cam I308 is provided with a ball rotating groove V309 and a watertight groove IX 310, and the lower surface of the cam I308 is provided with a watertight groove X311 and a ball rotating groove VI 312;

a water-tight groove XI 315 and a ball rotating groove VII 316 are formed in the upper surface of the cam II 314, and a ball rotating groove VIII 317 and a water-tight groove XII 318 are formed in the lower surface of the cam II 314;

the upper surface of the cam III 319 is provided with a watertight groove XIII 320 and a ball rotating groove IX 321, and the lower surface of the cam III 319 is provided with a ball rotating groove X322 and a watertight groove XIV 323;

the pipeline connecting hole 313 is a through hole on the hollow motor shaft 3, is respectively arranged between the cam I308 and the cam II 314, between the cam II 314 and the cam III 319, and between the cam III 319 and the partition plate 324 in the axial direction, and is arranged at the periphery at 60 degrees, 90 degrees or 180 degrees on the cross section, and preferably is arranged at 90 degrees;

the partition plate 324 is arranged between the pipeline connecting hole 313 at the lowest end of the hollow motor shaft 3 and the vacuum suction port 325, and partitions the interior of the hollow motor shaft 3 into two parts, wherein the upper part is an external fluid medium conveying pipe, and the lower part is a seawater sediment or suspended matter output pipe;

the vacuum suction port 325 is arranged around the bottom of the hollow motor shaft 3, and the sediment or suspended matter in the third filter screen 6 is discharged through the vacuum suction port 325.

Referring to fig. 1-3, the present invention discloses a seawater filter, which comprises a body 1, a driving mechanism, a first filter screen 4, a first sealing element, a second filter screen 5, a second sealing element, a third filter screen 6, a first guide plate 16 and a second guide plate 24; a filter cavity is formed in the body 1, and a water inlet hole is formed in the lower part of the body 1; the driving mechanism is arranged on the body 1; the first filter screen 4 is arranged in the filter cavity, the upper part of the first filter screen 4 is connected with the driving mechanism, and the driving mechanism can drive the first filter screen 4 to rotate; the upper end surface of the first sealing element is connected with the lower part of the first filter screen 4; the upper part of the second filter screen 5 is connected with the lower end face of the first sealing element; the upper end surface of the second sealing element is connected with the lower part of the second filter screen 5; the upper part of the third filter screen 6 is connected with the lower end face of the second sealing element, the lower part of the third filter screen 6 is connected with the bottom face of the body, and the inlet side of the third filter screen 6 is opposite to the water inlet hole; one end of the first guide plate 16 is rotatably connected with the first sealing element, the first sealing element can rotate relative to the first guide plate 16, the other end of the first guide plate 16 is connected with the inner side wall of the body 1, and the first guide plate 16 is positioned between the outlet side of the first filter screen 4 and the inlet side of the second filter screen 5; one end of the second guide plate 24 is rotatably connected with the second sealing element, the second sealing element can rotate relative to the second guide plate 24, the other end of the second guide plate 24 is connected with the inner side wall of the body 1, the second guide plate 24 is positioned between the outlet side of the second filter screen 5 and the inlet side of the third filter screen 6, and the second guide plate 24 and the first guide plate 16 are oppositely arranged; a first seawater filtering area is defined among the second guide plate 24, the inner side wall of the body 1 and the third filter screen 6; a second seawater filtering area is defined among the first guide plate 16, the inner side wall of the body 1, the third filter screen 6 and the second filter screen 5; a third seawater filtering area is defined among the second diversion plate 24, the second filter screen 5 and the first filter screen 4; a plurality of first filtration pores have been seted up on first filter screen 4, a plurality of second filtration pores have been seted up on second filter screen 5, a plurality of third filtration pores have been seted up on third filter screen 6, the aperture of first filtration pore is d1, the aperture of second filtration pore is d2, the aperture of third filtration pore is d3, wherein d1 < d2 < d 3.

In some embodiments, the first sieve 4, the second sieve 5 and the third sieve 6 arranged in sequence in the vertical direction form a group of filters, and several groups of filters are arranged in the filter cavity.

In some embodiments, a connecting pipe 35 is connected to the top of the motor shaft 3, the connecting pipe 35 is communicated with the conveying cavity, and the connecting pipe 35 is used for connecting a compressed air pipe 36, or a high-pressure steam pipe 37 or a high-pressure fresh water pipe 37.

In some embodiments, a first pressure sensor 39, a second pressure sensor 40, a third pressure sensor 41, and a fourth pressure sensor 42 are further included, the first pressure sensor 39 is disposed on an inlet side of the third screen 6, the second pressure sensor 40 is disposed on an outlet side of the third screen 6, the third pressure sensor 41 is disposed on an outlet side of the second screen 5, and the fourth pressure sensor 42 is disposed on an outlet side of the first screen 4.

In some embodiments, the seawater filtering device further comprises a first seawater output pipe 34, a second seawater output pipe 33 and a third seawater output pipe 32 which are all arranged on the body, wherein the first seawater output pipe 34 is communicated with the second seawater filtering area, the second seawater output pipe 33 is communicated with the third seawater filtering area, and the third seawater output pipe 32 is communicated with the outlet side of the first filter screen.

Referring to fig. 6, the body 1 includes a top plate 101, an arc guide plate i 102, a front end plate 103, a bottom plate 104, an arc guide plate ii 105, a rear end plate 106, a left side plate 107 and a right side plate 108, the top plate 101, the arc guide plate i 102, the front end plate 103, the bottom plate 104, the arc guide plate ii 105 and the rear end plate 106 are sequentially and fixedly connected, the left side plate 107 is fixedly connected with the left side end faces of the top plate 101, the arc guide plate i 102, the front end plate 103, the bottom plate 104, the arc guide plate ii 105 and the rear end plate 106 of the body 1, and the right side plate 108 is fixedly connected with the right side end faces of the top plate 101, the arc guide plate i 102, the front end plate 103, the bottom plate 104, the arc guide plate ii 105 and the rear end plate 106 of the body 1, so that the body 1 forms a box.

The top plate 101 is provided with a plurality of watertight holes I109, watertight grooves I110, ball rotating grooves I111, watertight grooves II 112 and through holes I113, the watertight grooves I110, the ball rotating grooves I111 and the watertight grooves II 112 are arranged in the watertight holes I109, and the through holes I113 are arranged on the upper portion of the top plate 101.

The arc guide plate I102 is fixedly connected with the top plate 101 and the front end plate 103 and plays a role in guiding seawater;

the lower end of the front end plate 103 is provided with a seawater circulation through hole 114, and the front end of the seawater circulation through hole 114 is fixedly connected with the flow guide channel 29;

the upper end of the bottom plate 104 is provided with a plurality of filter element mounting grooves 115, fixing grooves 116 of the double ball bearings 26 are arranged below the filter element mounting grooves 115, the lower parts of the fixing grooves 116 are provided with through holes II 117, and the through holes II 117 are fixedly connected with a connecting seat plate I118 of a sewage discharge pipe;

the arc guide plate II 105 is fixedly connected with the bottom plate 104 and the rear end plate 106 and plays a role in guiding seawater;

the rear end plate 106 is provided with one or more fine filtering seawater conveying pipe through holes 119 and coarse filtering seawater conveying pipe through holes 120 according to the pipeline diameter size and quantity requirements of the third seawater output pipe 32 and the first seawater output pipe 34; the upper end face of the rear end plate 106 is fixedly connected with the top plate 101, and the lower end face of the rear end plate is fixedly connected with the arc guide plate II 105;

through holes of a first pressure sensor 39, a second pressure sensor 40, a third pressure sensor 41 and a fourth pressure sensor 42 are formed in the left side plate 107 and the right side plate 108, and a seat plate I121 is fixedly installed on the through holes; the left side plate 107 and the right side plate 108 are also provided with through holes of a first seawater inlet vacuum sewage pumping pipe 43, a second seawater inlet vacuum sewage pumping pipe 45 and a third seawater inlet vacuum sewage pumping pipe 46, and a seat plate II 122 is fixedly installed on the through holes; and the left side plate 107 and the right side plate 108 are also provided with connecting through holes III 123 of the fine filtering seawater conveying pipe.

The first filter screen 4 is a hollow cylindrical filter screen, the diameter of a filter hole of the first filter screen 4 is not less than 50 d1 and not more than 100 microns, the upper part of the first filter screen 4 is fixed at the lower part of the low-speed output end 229, and the lower part of the first filter screen is fixed at the upper end face of the filter element sealing block I15; the low speed output 229 drives the first screen 4 and cartridge seal block i 15 in synchronous rotational movement.

The second filter screen 5 is a hollow cylindrical filter screen, the diameter of a filter hole of the second filter screen is not less than 100 d2 and not more than 500 microns, the upper part of the second filter screen 5 is fixed at the lower end of the filter element sealing block I15, and the lower part of the second filter screen is fixed at the upper end face of the filter element sealing block II 23; the filter element sealing block I15 drives the second filter screen 5 and the filter element sealing block II 23 to synchronously rotate under the drive of the low-speed output end 229.

The third filter screen 6 is a hollow cylindrical filter screen, the diameter d3 of a filter hole of the third filter screen is less than or equal to 5mm, the upper part of the third filter screen 6 is fixed on the lower end face of the filter element sealing block II 23, and the lower part of the third filter screen is fixed on the filter bottom plate 25; the filter element sealing block II 23 drives the third filter screen 6 and the filter bottom plate 25 to synchronously rotate under the transmission rotation of the filter element sealing block I15.

The cleaning pipe 7 is in a U-shaped tubular shape, is arranged in the first filter screen 4, the second filter screen 5 and the third filter screen 6, and is fixedly arranged on the pipeline connecting hole 313; a plurality of small-diameter spraying through holes are formed in the outer side of the cleaning pipe 7, fluid is sprayed out of the small-diameter spraying through holes after passing through the hollow motor shaft 3 and the cleaning pipe 7, the cleaning pipe 7 rotates at a high speed under the driving of the hollow motor shaft 3 to perform circulating back washing on the filter holes of the first filter screen 4, the second filter screen 5 and the third filter screen 6, blocking objects in the filter holes are removed, and the efficiency of the filter screens for filtering seawater is improved.

The plurality of fixing rods 8 are arranged between the cleaning pipe 7 and the hollow motor shaft 3, one end of each fixing rod is fixed on the inner side of the cleaning pipe 7, and the other end of each fixing rod is fixed on the outer side of the hollow motor shaft 3, so that the rigidity of the cleaning pipe 7 is increased, and the cleaning pipe 7 is prevented from being deformed during high-speed operation.

Referring to fig. 13, the hollow motor shaft watertight block i 9 is of a half type, the lower end face of the hollow motor shaft watertight block is provided with a ball rotating groove xi 901 and a watertight groove xv 902, the ball rotating groove xi 901 corresponds to the ball rotating groove vii 316, and the watertight groove xv 902 corresponds to the watertight groove xi 315; the middle of the hollow motor shaft watertight block I9 is provided with a central through hole III 903, and the hollow motor shaft 3 penetrates through the central through hole III 903.

Referring to fig. 14, the first watertight filter block 12 is of a half type, and the lower end surface is provided with a ball rotation groove xii 1201 and a watertight groove xvi 1202; a central through hole IV 1203 is formed in the middle of the first filter screen watertight block 12; the first filter screen watertight block 12 is fixedly mounted on the first deflector 16.

Referring to fig. 15, the cartridge seal block i 15 includes a cartridge seal block ball rotation slot i 1501, a cartridge seal block water-tight slot i 1502, a cartridge seal block shoulder i 1503, a cartridge seal block groove i 1504, a cartridge seal block groove ii 1505, a cartridge seal block ball rotation slot ii 1506, a cartridge seal block water-tight slot ii 1507, a cartridge seal block center through hole i 1508, a cartridge seal block ball rotation slot iii 1509, and a cartridge seal block water-tight slot iii 1510; the filter element sealing block ball rotating groove I1501 corresponds to the ball rotating groove XII 1201; the filter element sealing block watertight tank I1502 corresponds to the watertight tank XVI 1202; the filter element sealing block ball rotating groove II 1506 corresponds to the ball rotating groove VIII 317; the filter element sealing block watertight tank II 1507 corresponds to the watertight tank XII 318; the filter element sealing block ball rotating groove III 1509 corresponds to the first guide plate ball rotating groove 1605; the filter element sealing block watertight groove III 1510 corresponds to the first guide plate watertight groove 1604.

The mechanical watertight sealing ring I10 is an annular sealing ring, one mechanical watertight sealing ring is arranged between the watertight groove XV 902 and the watertight groove XI 315, and the other mechanical watertight sealing ring is arranged between the filter element sealing block watertight groove II 1507 and the watertight groove XII 318; the mechanical watertight sealing ring I10 realizes isolation and watertight sealing for the inside of the first filter screen 4 and the second filter screen 5.

The watertight block balls I11 are spherical balls, and a plurality of watertight block balls I11 form a group in an annular mode, wherein one group is arranged between the ball rotating groove XI 901 and the ball rotating groove VII 316, and the other group is arranged between the filter element sealing block ball rotating groove II 1506 and the ball rotating groove VIII 317.

The cam II 314 of hollow motor shaft 3 is installed between hollow motor shaft watertight block I9 and filter element sealing block I15, hollow motor shaft watertight block I9 is fixed in filter element sealing block groove I1504 of filter element sealing block I15, and cam II 314 of hollow motor shaft 3 rotates at high speed in the clearance formed between hollow motor shaft watertight block I9 and filter element sealing block I15 through the rolling of watertight block ball I11.

Referring to fig. 16, the first baffle 16 includes an arc baffle iii 1601, a plurality of cartridge seal block i mounting slots 1602, a plurality of first baffle through holes 1603, a plurality of first baffle watertight slots 1604, and a plurality of first baffle ball rotation slots 1605; a filter element sealing block I15 is arranged on the filter element sealing block I mounting groove 1602, a first guide plate watertight groove 1604 corresponds to the filter element sealing block watertight groove III 1510 in position, and a first guide plate ball rotating groove 1605 corresponds to the filter element sealing block ball rotating groove III 1509 in position; the first flow guide plate 16 divides the flow passage of the first sieve 4 and the second sieve 5 to form the secondary filtration and the tertiary filtration of the filter.

And the mechanical watertight sealing ring II 13 is an annular sealing ring, one of the mechanical watertight sealing rings is arranged between the filter element sealing block watertight groove I1502 and the watertight groove XVI 1202, and the other mechanical watertight sealing ring is arranged between the first guide plate watertight groove 1604 and the filter element sealing block watertight groove III 1510.

Watertight piece ball II 14 is spherical ball, and a plurality of watertight piece balls II 14 are cyclic annular constitution a set ofly, and one of them group is installed and is rotated between groove I1501 and ball rotation groove XII 1201 at the sealed piece ball of filter core, and another group is installed and is rotated between groove III 1509 and first guide plate ball rotation groove 1605 at the sealed piece ball of filter core.

Referring to fig. 13, the hollow motor shaft watertight block ii 17 is of a half type, and the lower end surface is provided with a ball rotation groove xiii 1701, a watertight groove xvii 1702 and a central through hole v 1703, the ball rotation groove xiii 1701 corresponds to the ball rotation groove ix 321, and the watertight groove xvii 1702 corresponds to the watertight groove xiii 320; a central through hole V1703 is formed in the middle of the hollow motor shaft watertight block II 15, and the hollow motor shaft 3 penetrates through the central through hole V1703; the hollow motor shaft watertight block II 15 and the hollow motor shaft watertight block I9 are of similar design, and the difference lies in that the outer diameter of the hollow motor shaft watertight block II 15 is smaller than that of the hollow motor shaft watertight block I9, and the groove diameters of the ball rotating grooves XIII 1701 and the watertight grooves XVII 1702 are different from those of the ball rotating grooves XI 901 and the watertight grooves XV 902.

Referring to fig. 14, the second strainer watertight block 18 is of a half type, and ball rotation grooves xiv 1801 and a watertight groove xviii 1802 are formed in the lower end surface of the second strainer watertight block 18; the middle of the second filter screen watertight block 18 is provided with a central through hole VI 1803, and the second filter screen watertight block 18 is fixedly arranged on the second guide plate 24.

Referring to fig. 17, the cartridge seal block ii 23 comprises a cartridge seal block ball pivot groove iv 2301, a cartridge seal block water-tight groove iv 2302, a cartridge seal block shoulder ii 2303, a cartridge seal block recess iii 2304, a cartridge seal block recess iv 2305, a cartridge seal block ball pivot groove v 2306, a cartridge seal block water-tight groove v 2307, a cartridge seal block central throughbore ii 2308, a cartridge seal block ball pivot groove vi 2309, and a cartridge seal block water-tight groove vi 2310; the ball rotating groove IV 2301 of the filter element sealing block corresponds to the ball rotating groove XIV 1801; the filter element sealing block watertight groove IV 2302 corresponds to the watertight groove XVIII 1802; the ball rotation groove V2306 of the filter element sealing block corresponds to the ball rotation groove X322; the filter element sealing block watertight groove V2307 corresponds to the watertight groove XIV 323; the filter element sealing block ball rotating groove VI 2309 corresponds to the second guide plate ball rotating groove 2405; the filter element sealing block water-tight groove VI 2310 corresponds to the second guide plate water-tight groove 2404.

The mechanical watertight sealing rings III 19 are annular sealing rings, one of the mechanical watertight sealing rings is arranged between the watertight groove XVII 1702 and the watertight groove XIII 320, and the other mechanical watertight sealing ring is arranged between the watertight groove V2307 and the watertight groove XIV 323 of the filter element sealing block; and the mechanical watertight sealing ring III 19 realizes isolation and watertight sealing on the inner parts of the second filter screen 5 and the third filter screen 6.

The watertight block balls III 20 are spherical balls, and a plurality of watertight block balls III 20 are annularly formed into one group, wherein one group is arranged between the ball rotating groove XIII 1701 and the ball rotating groove IX 321, and the other group is arranged between the filter element sealing block ball rotating groove V2306 and the ball rotating groove X322.

The mechanical watertight sealing ring IV 21 is an annular sealing ring, one of the mechanical watertight sealing rings is arranged between the watertight groove XVIII 1802 and the watertight groove IV 2302 of the filter element sealing block, and the other mechanical watertight sealing ring is arranged between the watertight groove VI 2310 of the filter element sealing block and the watertight groove 2404 of the second guide plate.

The watertight block ball IV 22 is a spherical ball, and a plurality of watertight block balls IV 22 form a group in a ring shape, wherein one group is arranged between the ball rotating groove XIV 1801 and the filter element sealing block ball rotating groove IV 2301, and the other group is arranged between the filter element sealing block ball rotating groove VI 2309 and the second guide plate ball rotating groove 2405.

The cam III 319 of the hollow motor shaft 3 is arranged between the hollow motor shaft watertight block II 15 and the filter element sealing block II 23, the hollow motor shaft watertight block II 15 is fixedly arranged in the filter element sealing block groove III 2304 of the filter element sealing block II 23, and the cam III 319 of the hollow motor shaft 3 rotates at a high speed in a gap formed between the hollow motor shaft watertight block II 15 and the filter element sealing block II 23 through rolling of the watertight block ball III 20.

Referring to fig. 18, the second baffle 24 includes a baffle arc plate iv 2401, a plurality of filter element sealing block ii mounting grooves 2402, a plurality of second baffle through holes 2403, a plurality of second baffle water-tight grooves 2404 and a plurality of second baffle ball rotating grooves 2405; the filter element sealing block II 23 is arranged on the filter element sealing block II mounting groove 2402, the position of a second guide plate watertight groove 2404 corresponds to the position of a filter element sealing block watertight groove VI 2310, and the position of a second guide plate ball rotating groove 2405 corresponds to the position of a filter element sealing block ball rotating groove VI 2309; the second flow deflector 24 separates the flow paths of the second screen 5 and the third screen 6, forming the primary and secondary filtration of the filter.

Referring to fig. 19, the strainer bottom plate 25 is a bottom plate of the third strainer 6, the third strainer 6 is fixedly mounted on the strainer bottom plate 25, a central through hole vii 2501 is formed in the middle of the strainer bottom plate 25, the bottom end of the hollow motor shaft 3 penetrates through the central through hole vii 2501, and the lower surface of the strainer bottom plate 25 is fixedly connected with a bearing shoulder of the double-ball bearing 26.

The double ball bearings 26 are double-ring ball bearings with different diameters, and convex shoulder guide rails are arranged among the balls; the inner ring of the double ball bearing 26 is fixedly connected with the hollow motor shaft 3, the upper surface of the bearing convex shoulder guide rail is fixedly connected with the filter bottom plate 25, and the outer ring of the bearing is fixed in the groove of the fixing groove 116; the double ball bearing 26 can operate at double speed, the inner ring rotates at high speed driven by the hollow motor shaft 3, and the bearing shoulder guide rail rotates synchronously with the third filter screen 6.

In some embodiments, the filter further comprises a plurality of cutters, and each cutter is disposed on an inlet side of the first screen, an inlet side of the second screen, and an inlet side of the third screen.

The cutting knife 27 is arranged at the seawater inlet ends of the first filter screen 4, the second filter screen 5 and the third filter screen 6, the cutting knife 27 is in clearance fit with the filter screens, and the clearance is equal to the diameter of filter holes of the filter screens;

the cutter bar 28 is fixed to the back of the cutter 27, and reinforces the cutter 27 to prevent deformation of the cutter.

The inlet end of the flow guide channel 29 is fixedly connected with the connecting flange 30, and the outlet end is fixedly connected with the front end plate 103.

Referring to fig. 20, the flow holes of the connecting flange 30 are arranged at the lower parts of the connecting steel flange i 14 and the connecting steel flange ii 15, the upper part is a solid part, and a watertight groove is arranged at the flange interface of the connecting flange 30;

the connecting rib plate 31 is divided into a plurality of connecting rib plates which are uniformly arranged and fixed among the front end plate 103 of the body 1, the upper surface of the flow guide channel 29 and the solid end surface of the connecting flange 30.

The third seawater output pipe 32 is fixedly installed on the rear end plate 106 on the seawater outlet side of the first filter screen 4, and the finely filtered seawater is output from the third seawater output pipe 32.

The second seawater output pipe 33 is fixedly arranged on the left side plate 107 or/and the right side plate 108 on the seawater outlet side of the second filter screen 5, and the finely filtered seawater is output from the second seawater output pipe 33.

The first seawater output pipe 34 is fixedly installed on the rear end plate 106 at the seawater outlet side of the third filter screen 6, and the coarsely filtered seawater is output from the first seawater output pipe 34.

The hollow connection pipe 35 is fixedly connected to the hollow connection pipe seat plate 211.

The compressed air pipe 36, the high-pressure steam pipe 37 and the high-pressure fresh water pipe 38 are fixedly connected to the hollow connecting pipe 35.

The first pressure sensor 39 is fixedly installed at the through holes of the left side plate 107 and the right side plate 108 on the seawater outlet side of the first filter screen 4 and the seat plate i 121, and monitors the seawater pressure at the rear part of the first filter screen 4.

The second pressure sensor 40 is fixedly installed on the through holes of the seawater outlet side left side plate 107 and the seawater outlet side right side plate 108 of the second filter screen 5 and the seat plate I121, and monitors the seawater pressure at the rear part of the second filter screen 5.

The third pressure sensor 41 is fixedly installed on the through holes of the left side plate 107 and the right side plate 108 on the seawater outlet side of the third filter screen 6 and the seat plate i 121, and monitors the seawater pressure at the rear part of the third filter screen 6.

The fourth pressure sensor 42 is fixedly installed on the through holes and the seat plate i 121 of the left side plate 107 and the right side plate 108 on the seawater inlet side of the third filter screen 6, and monitors the seawater pressure at the inlet of the third filter screen 6.

The first seawater inlet vacuum sewage pumping pipe 43 is fixedly arranged on through holes of the left side plate 107 and the right side plate 108 on the seawater inlet side of the third filter screen 6 and the seat plate II 122.

The fourth seawater inlet vacuum sewage pumping pipe 44 is fixedly arranged on through holes of the seawater outlet side left side plate 107 and the seawater outlet side right side plate 108 of the third filter screen 6 and a seat plate II 122.

The second seawater inlet vacuum sewage pumping pipe 45 is fixedly arranged on the connecting seat plate I118.

And the third seawater inlet vacuum sewage pumping pipe 46 is fixedly arranged on through holes of a left side plate 107 and a right side plate 108 at the rear part of the second filter screen 5 and a seat plate II 122.

The seawater filter comprises a plurality of groups of filter units which are arranged on a body 1; the filter comprises a body 1 lower structure, a third filter screen 6, a hollow motor shaft watertight block II 15, a second filter screen watertight block 18, a mechanical watertight sealing ring III 19, a watertight block ball III 20, a mechanical watertight sealing ring IV 21, a watertight block ball IV 22, a filter element sealing block II 23, a second guide plate 24 and a cutting knife 27, and is used for filtering precipitates or suspended matters with the particle diameter of less than or equal to 5mm in seawater.

The device comprises a body 1 middle structure, a second filter screen 5, a hollow motor shaft watertight block I9, a mechanical watertight sealing ring I10, a watertight block ball I11, a first filter screen watertight block 12, a mechanical watertight sealing ring II 13, a watertight block ball II 14, a filter element sealing block I15, a first guide plate 16, a hollow motor shaft watertight block II 15, a second filter screen watertight block 18, a mechanical watertight sealing ring III 19, a watertight block ball III 20, a mechanical watertight sealing ring IV 21, a watertight block ball IV 22, a filter element sealing block II 23, a second guide plate 24 and a cutter 27, wherein secondary filtration is formed by the filter, and precipitates or suspended matters with particle diameters of 100-500 micrometers in filtered seawater.

1 superstructure of body, first filter screen 4, hollow motor shaft watertight piece I9, mechanical type watertight sealing washer I10, watertight piece ball I11, first filter screen watertight piece 12, mechanical type watertight sealing washer II 13, watertight piece ball II 14, filter core sealed piece I15, first guide plate 16 and cutting knife 27 form tertiary filtration, filter the deposit or the suspended solid that particulate matter diameter is less than or equal to 100 microns in the sea water.

The double-speed output motor 2 is a double-speed output motor, the hollow motor shaft 3 rotates at a high speed under the action of the motor stator 206 and the motor rotor 207 and outputs at a low speed under the action of the harmonic reducer 229.

The hollow motor shaft 3 is a hollow shaft, a high-speed and high-pressure fluid medium is conveyed in the upper shaft, and the inner sides of the first filter screen 4, the second filter screen 5 and the third filter screen 6 are backwashed through the cleaning pipe 7.

The low-speed output end 229 drives the first filter screen 4, the second filter screen 5, the filter element sealing block I15, the third filter screen 6 and the filter element sealing block II 23 to rotate at a low speed, filter holes in the switching filter screens filter seawater, and sediment or suspended matters clamped on the front sides of the filter screens and the filter elements are cut and crushed by the rotation of the filter screens through the interaction of the filter screens and the cutting knives and then are discharged through the vacuum sewage pumping pipe and the valve discharge filter.

A method of using a seawater filter, comprising: a seawater filter can be directly and fixedly connected with a sea chest of a sea through a connecting flange 30; external seawater enters the multistage seawater filter through the diversion channel 29, the pressure of the seawater entering the filter is monitored by the fourth pressure sensor 42, and precipitates or suspended matters with the granularity of more than 5 millimeters are discharged out of the filter through the first seawater inlet vacuum sewage pumping pipe 43; seawater with granularity less than or equal to 5mm enters the body 1 after being subjected to primary filtration by the third filter screen 6, part of seawater subjected to primary filtration is output to equipment needing seawater cooling through the first seawater output pipe 34, the third pressure sensor 41 monitors the pressure of the seawater filtered by the third filter screen 6, when the pressure difference between the third pressure sensor 41 and the fourth pressure sensor 42 is greater than a set value, the double-rotating-speed output motor 2 and a control valve on the fluid pipe are started, fluid is introduced into the cleaning pipe 7 to back flush the third filter screen 6, and particulate matters or suspended matters deposited at the rear end of the third filter screen 6 in the seawater are sucked and discharged through the second seawater inlet vacuum suction pipe 45;

the seawater after the primary filtration can be subjected to secondary filtration through a second filter screen 5, the diameter of particles in the filtered seawater is 100-500 micrometers, part of the seawater after the secondary filtration is output through a second seawater output pipe 33, the seawater pressure at the rear end of the second filter screen 5 is monitored by a second pressure sensor 40, when the pressure difference between the second pressure sensor 40 and a third pressure sensor 41 is greater than a set value, a double-rotating-speed output motor 2 and a control valve on a fluid pipe are started, fluid is introduced into a cleaning pipe 7 to carry out back washing on the second filter screen 5, and particles or suspended matters deposited at the rear end of the second filter screen 5 in the seawater are sucked and discharged through a third seawater inlet vacuum suction pipe 46;

the seawater after the second-stage filtration can be further subjected to third-stage filtration through the first filter screen 4, the diameter of particles in the filtered seawater is 50-100 micrometers, the filtered seawater is output through the third seawater inlet vacuum sewage pumping pipe 46, the seawater pressure at the rear end of the first filter screen 4 is monitored by the first pressure sensor 39, when the pressure difference between the first pressure sensor 39 and the second pressure sensor 40 is larger than a set value, the double-rotation-speed output motor 2 and a control valve on the fluid pipe are started, and fluid is introduced into the cleaning pipe 7 to back flush the first filter screen 4.

A using method of a seawater filter comprises the steps that a plurality of independent filtering channels which are arranged side by side are formed in a body, each filtering channel is arranged corresponding to a first filter screen, a second filter screen and a third filter screen respectively, each filtering channel comprises a water inlet and a water outlet, namely each filter screen adopts an independent flow channel to form a single-stage filtering seawater filter, and a multi-stage seawater filter element can form a plurality of independent seawater filter units to form a plurality of flow channels with different seawater cleanliness.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.