阅读说明：本技术 一种串列轴流式喷水推进泵 (Tandem axial flow type water jet propulsion pump ) 是由 李臣 赵峰 于 2021-01-28 设计创作，主要内容包括：本发明公开了一种串列轴流式喷水推进泵,涉及喷水推进技术领域,包括泵体,所述泵体的内部固定安装有隔板,所述隔板将泵体的内部分隔为第一安装区域与第二安装区域,所述泵体的顶部通过螺丝可拆卸式安装有端盖,所述泵体内部的第一安装区域内固定安装有电机,所述泵体内部的第二安装区域内设置有转轴,所述隔板的中部开设有通孔,所述隔板的底部固定安装有机械密封,所述转轴的顶端穿过机械密封、通孔后进入第一安装区域的内部并与电机的输出轴固定连接。本发明通过设置的机械密封,能够有效提高转轴与通孔之间圆周间隙处的密封效果,同时,配备了以增加泵体内部第一安装区域内气压的方式,来避免转轴与通孔之间的圆周间隙处发生渗漏。(The invention discloses a serial axial flow type water jet propulsion pump, which relates to the technical field of water jet propulsion and comprises a pump body, wherein a partition plate is fixedly arranged in the pump body, the partition plate divides the interior of the pump body into a first installation area and a second installation area, an end cover is detachably arranged at the top of the pump body through screws, a motor is fixedly arranged in the first installation area in the pump body, a rotating shaft is arranged in the second installation area in the pump body, a through hole is formed in the middle of the partition plate, a mechanical seal is fixedly arranged at the bottom of the partition plate, and the top end of the rotating shaft penetrates through the mechanical seal and the through hole, enters the interior of the first installation area and is fixedly connected with an output shaft of the motor. The mechanical seal is arranged, so that the sealing effect at the circumferential gap between the rotating shaft and the through hole can be effectively improved, and meanwhile, the leakage at the circumferential gap between the rotating shaft and the through hole is avoided by increasing the air pressure in the first mounting area in the pump body.)

1. A tandem axial flow type water jet propulsion pump comprises a pump body (1), and is characterized in that: the pump is characterized in that a partition plate (6) is fixedly arranged inside the pump body (1), the partition plate (6) divides the pump body (1) into a first installation area and a second installation area, an end cover (4) is detachably arranged at the top of the pump body (1) through screws, a motor (7) is fixedly arranged in the first installation area inside the pump body (1), a rotating shaft (11) is arranged in the second installation area inside the pump body (1), a through hole is formed in the middle of the partition plate (6), a mechanical seal (10) is fixedly arranged at the bottom of the partition plate (6), the top end of the rotating shaft (11) penetrates through the mechanical seal (10) and the through hole to enter the first installation area and is fixedly connected with an output shaft of the motor (7), an impeller (12) is fixedly arranged on the rotating shaft (11), and a first diversion pipeline (2) and a second diversion pipeline (3) are fixedly connected with the outer wall of the pump body (1), the first diversion pipeline (2) and the second diversion pipeline (3) are communicated with the inside of a second installation area inside the pump body (1).

2. The tandem axial flow waterjet propulsor pump of claim 1, wherein: rubber pad (5) are installed to the bottom of end cover (4), be provided with waterproof powerful glue between end cover (4) and rubber pad (5), the top fixed connection of waterproof powerful glue and rubber pad (5) is passed through to the bottom of end cover (4), rubber pad (5) are located between end cover (4) and the pump body (1).

3. The tandem axial flow waterjet propulsor pump of claim 1, wherein: the utility model discloses a pump, including the pump body, the inside fixed mounting of the pump body (1) has ring (15), ring (15) are close to the bottom opening of the pump body (1), the inside of ring (15) is provided with solid fixed ring (31), fixedly connected with connecting rod (30) between ring (15) and solid fixed ring (31), the inside fixed mounting of solid fixed ring (31) has bearing (32), the fixed cover in the inner ring of bearing (32) of bottom of pivot (11).

4. A tandem axial flow waterjet propulsor pump according to claim 3, wherein: bearing (32) are the stainless steel ball bearing who has the sealing member, the quantity of connecting rod (30) is four groups, and four groups connecting rod (30) are four groups sector region with the area separation between ring (15) and solid fixed ring (31), the inside of ring (15) is provided with filter screen (33), the quantity of filter screen (33) is four groups, and four groups filter screen (33) respectively fixed mounting in four groups sector region.

5. The tandem axial flow waterjet propulsor pump of claim 1, wherein: the outer wall of the pump body (1) is provided with first heat dissipation fins (13) through welding and fixing, the first heat dissipation fins (13) are located inside the first diversion pipeline (2), the outer wall of the pump body (1) is provided with second heat dissipation fins (14) through welding and fixing, the second heat dissipation fins (14) are located inside the second diversion pipeline (3), and the number of the first heat dissipation fins (13) and the number of the second heat dissipation fins (14) are three to five.

6. The tandem axial flow waterjet propulsor pump of claim 1, wherein: the outer wall fixed mounting of motor (7) has first fixed block (8), first fixed block (8) are connected through the inner wall detachable of screw and the pump body (1), the outer wall of motor (7) still fixed mounting has second fixed block (9), second fixed block (9) are connected through the inner wall detachable of screw and the pump body (1).

7. The tandem axial flow waterjet propulsor pump of claim 1, wherein: the utility model discloses a pump, including the pump body (1), the front side outer wall of the pump body (1) is provided with miniature air pump (16), be provided with electromagnetic switch on the power supply circuit of miniature air pump (16), it has two sets of fixed strips (17) to surround on miniature air pump (16), the both ends of fixed strip (17) all with the front side outer wall welded fastening of the pump body (1), the output fixedly connected with high-pressure gas pipe (18) of miniature air pump (16), the mounting hole has been seted up to the front side outer wall of the pump body (1), and mounting hole department fixed mounting has airtight connector (19), the one end and airtight connector (19) fixed connection of miniature air pump (16) are kept away from to high-pressure gas pipe (18), high-pressure gas pipe (18) communicate with each other with the inside first installation area of the pump body (1), the middle part of high-pressure gas pipe (18) is provided.

8. The tandem axial flow waterjet propulsor pump of claim 7, wherein: the rear outer wall of the pump body (1) is fixedly provided with a controller (21), an air pressure sensor main body (22) and a water pressure sensor main body (26), the structure of the air pressure sensor main body (22) comprises an air pressure sensor sensing probe (23) and an air pressure sensor conversion element (24), the structure of the water pressure sensor main body (26) comprises a water pressure sensor sensing probe (27) and a water pressure sensor conversion element (28), the pump body (1) is provided with a first through hole, one end of the air pressure sensor sensing probe (23) penetrates through the first through hole to enter a first installation region inside the pump body (1), the pump body (1) is provided with a second through hole, one end of the water pressure sensor sensing probe (27) penetrates through the second through hole to enter a second installation region inside the pump body (1), and the air pressure sensor conversion element (24), The water pressure sensor conversion elements (28) are connected with a controller (21) through transmission lines, and the controller (21) is connected with the electromagnetic valve (20) and an electromagnetic switch of the micro air pump (16) through the transmission lines.

9. The tandem axial flow waterjet propulsor pump of claim 8, wherein: a first sealing ring (25) is fixedly installed in a circumferential gap between the air pressure sensor sensing probe (23) and the first through hole through a sealant, and a second sealing ring (29) is fixedly installed in a circumferential gap between the water pressure sensor sensing probe (27) and the second through hole through a sealant.

Technical Field

The invention relates to the technical field of water jet propulsion, in particular to a tandem axial flow type water jet propulsion pump.

Background

The water jet propulsion device is a novel special power device, is different from a common propeller propulsion mode, obtains the thrust of water jet propulsion by the reaction force of water flow sprayed by a propulsion water pump, and realizes the control of a ship by controlling a rudder and reversing equipment to distribute and change the direction of jet flow. The method is applied to middle and high speed ships such as planing boats, wave-piercing boats, hydrofoils, hovercraft and the like. At present, in some water jet propulsion devices, a tandem axial flow pump is used as a core component, the axial flow pump drives an impeller to rotate at a high speed through a motor to generate acting force on liquid so as to enable the liquid to be conveyed along an axial direction, and thrust is generated when the liquid is output, so that forward power is obtained.

The existing tandem axial flow type water jet propulsion pump has certain defects when in use, a rotating shaft needs to be inserted in the middle of an interlayer between a motor installation area and an impeller installation area, a circumferential gap exists between the rotating shaft and an insertion hole in the interlayer, the sealing difficulty is high, the leakage phenomenon easily occurs, and the safe operation of the motor is seriously influenced.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the existing defects and provide a serial axial flow type water jet propulsion pump which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a tandem axial flow type water jet propulsion pump comprises a pump body, a clapboard is fixedly arranged in the pump body, the inner part of the pump body is divided into a first mounting area and a second mounting area by the clapboard, the top of the pump body is detachably provided with an end cover by a screw, a motor is fixedly arranged in a first mounting area in the pump body, a rotating shaft is arranged in a second mounting area in the pump body, a through hole is arranged in the middle of the clapboard, a mechanical seal is fixedly arranged at the bottom of the clapboard, the top end of the rotating shaft passes through the mechanical seal and the through hole and then enters the first installation area and is fixedly connected with an output shaft of the motor, the rotating shaft is fixedly sleeved with an impeller, the outer wall of the pump body is fixedly connected with a first diversion pipeline and a second diversion pipeline, the first diversion pipeline and the second diversion pipeline are communicated with the inside of a second installation area inside the pump body.

Preferably, the bottom of the end cover is provided with a rubber pad, a waterproof strong glue is arranged between the end cover and the rubber pad, the bottom of the end cover is fixedly connected with the top of the rubber pad through the waterproof strong glue, and the rubber pad is positioned between the end cover and the pump body.

Preferably, the inside fixed mounting of the pump body has the ring, the ring is close to the bottom opening of the pump body, the inside of ring is provided with solid fixed ring, fixedly connected with connecting rod between ring and the solid fixed ring, gu fixed ring's inside fixed mounting has the bearing, the fixed suit in the inner ring of bearing in bottom of pivot.

Preferably, the bearing is the stainless steel ball bearing who has the sealing member, the quantity of connecting rod is four groups, and four groups of connecting rods with the zone separation between ring and the solid fixed ring be four groups fan-shaped region, the inside of ring is provided with the filter screen, the quantity of filter screen is four groups, and four groups of filter screens are fixed mounting respectively in four groups fan-shaped region.

Preferably, the outer wall of the pump body is fixedly provided with first heat dissipation fins through welding, the first heat dissipation fins are located inside the first diversion pipeline, the outer wall of the pump body is fixedly provided with second heat dissipation fins through welding, the second heat dissipation fins are located inside the second diversion pipeline, and the number of the first heat dissipation fins and the number of the second heat dissipation fins are three to five.

Preferably, the outer wall fixed mounting of motor has first fixed block, first fixed block passes through the detachable connection of inner wall of screw and the pump body, the outer wall of motor is fixed mounting still has the second fixed block, the second fixed block passes through the detachable connection of inner wall of screw and the pump body.

Preferably, the front side outer wall of the pump body is provided with miniature air pump, be provided with electromagnetic switch on the power supply circuit of miniature air pump, it has two sets of fixed strips to encircle on the miniature air pump, the both ends of fixed strip all are fixed with the front side outer wall welding of the pump body, the output fixedly connected with high pressure gas-supply pipe of miniature air pump, the mounting hole has been seted up to the front side outer wall of the pump body, and mounting hole department fixed mounting has airtight connector, the one end and the airtight connector fixed connection of miniature air pump are kept away from to the high pressure gas-supply pipe, the high pressure gas-supply pipe communicates with each other with the inside first installation area of the pump body, the middle part of high pressure gas-supply pipe is.

Preferably, the rear outer wall of the pump body is fixedly provided with a controller, an air pressure sensor main body and a water pressure sensor main body, the structure of the air pressure sensor main body comprises an air pressure sensor sensing probe and an air pressure sensor conversion element, the structure of the main body of the water pressure sensor comprises a water pressure sensor sensing probe and a water pressure sensor conversion element, the pump body is provided with a first through hole, one end of the air pressure sensor sensing probe passes through the first through hole to enter a first mounting area in the pump body, a second through hole is formed in the pump body, one end of the sensing probe of the water pressure sensor penetrates through the second through hole to enter a second mounting area in the pump body, the air pressure sensor conversion element and the water pressure sensor conversion element are connected with a controller through transmission lines, and the controller is connected with the electromagnetic valve and an electromagnetic switch of the miniature air pump through the transmission lines.

Preferably, a first sealing ring is fixedly installed in a circumferential gap between the air pressure sensor sensing probe and the first through hole through a sealant, and a second sealing ring is fixedly installed in a circumferential gap between the water pressure sensor sensing probe and the second through hole through a sealant.

Compared with the prior art, the invention has the beneficial effects that:

the invention can effectively improve the sealing effect at the circumferential clearance between the rotating shaft and the through hole through the arranged mechanical seal, simultaneously, the invention is provided with a mode of increasing the air pressure in the first installation area in the pump body to avoid the leakage at the circumferential clearance between the rotating shaft and the through hole, in the main structure of the water pressure sensor, the sensing probe of the water pressure sensor senses the water pressure in the second installation area in the pump body in real time, the sensing information is transmitted to the conversion element of the water pressure sensor, the sensing signal is converted into the electric signal through the conversion element of the water pressure sensor and is transmitted to the controller, in the main structure of the air pressure sensor, the sensing probe of the air pressure sensor senses the air pressure in the first installation area in the pump body in real time, the sensing information is transmitted to the conversion element of the air pressure sensor, the sensing signal is converted into the electric signal through the conversion, when water pressure is higher than air pressure, the controller outputs a control command to control the electromagnetic switch and the electromagnetic valve to be opened, the miniature air pump is started to compress air, the air is pressurized to the first installation area in the pump body as a transmission channel through the high-pressure air delivery pipe, the air pressure in the first installation area in the pump body is higher than the water pressure in the second installation area in the pump body, and therefore the circumferential gap between the rotating shaft and the through hole cannot leak, and protection is provided for the motor.

Drawings

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

FIG. 2 is a front view of the present invention;

FIG. 3 is a rear view of the present invention;

fig. 4 is a bottom view of the ring of the present invention.

In the figure: 1. a pump body; 2. a first diversion conduit; 3. a second diversion conduit; 4. an end cap; 5. a rubber pad; 6. a partition plate; 7. a motor; 8. a first fixed block; 9. a second fixed block; 10. mechanical sealing; 11. a rotating shaft; 12. an impeller; 13. a first heat radiation fin; 14. a second heat radiation fin; 15. a circular ring; 16. a micro air pump; 17. a fixing strip; 18. a high pressure gas delivery pipe; 19. an airtight connector; 20. an electromagnetic valve; 21. a controller; 22. a barometric sensor body; 23. an air pressure sensor sensing probe; 24. a barometric sensor conversion element; 25. a first seal ring; 26. a water pressure sensor body; 27. a water pressure sensor sensing probe; 28. a water pressure sensor conversion element; 29. a second seal ring; 30. a connecting rod; 31. a fixing ring; 32. a bearing; 33. and (4) a filter screen.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

Referring to fig. 1-4, the present invention provides a technical solution: a tandem axial flow type water jet propulsion pump comprises a pump body 1, a partition plate 6 is fixedly installed inside the pump body 1, the partition plate 6 divides the inside of the pump body 1 into a first installation area and a second installation area, an end cover 4 is detachably installed at the top of the pump body 1 through screws, a motor 7 is fixedly installed in the first installation area inside the pump body 1, a rotating shaft 11 is arranged in the second installation area inside the pump body 1, a through hole is formed in the middle of the partition plate 6, a mechanical seal 10 is fixedly installed at the bottom of the partition plate 6, the top end of the rotating shaft 11 penetrates through the mechanical seal 10 and the through hole to enter the inside of the first installation area and be fixedly connected with an output shaft of the motor 7, an impeller 12 is fixedly sleeved on the rotating shaft 11, a first diversion pipeline 2, a second diversion pipeline 3 and a first diversion pipeline 2 are fixedly connected, the second diversion pipes 3 are all communicated with the inside of the second installation area inside the pump body 1.

Furthermore, a rubber pad 5 is installed at the bottom of the end cover 4, a waterproof strong glue is arranged between the end cover 4 and the rubber pad 5, the bottom of the end cover 4 is fixedly connected with the top of the rubber pad 5 through the waterproof strong glue, and the rubber pad 5 is located between the end cover 4 and the pump body 1, so that the sealing effect of the joint of the end cover 4 and the pump body 1 is improved.

Further, the inside fixed mounting of the pump body 1 has a ring 15, the ring 15 is close to the bottom opening of the pump body 1, the inside of ring 15 is provided with solid fixed ring 31, fixedly connected with connecting rod 30 between ring 15 and the solid fixed ring 31, the inside fixed mounting of solid fixed ring 31 has bearing 32, the fixed suit of bottom of pivot 11 is in the inner ring of bearing 32, play the effect of supporting and fixing a position to pivot 11, and reduce the frictional force when pivot 11 rotates, reduce the kinetic energy loss, the operation is more smooth.

Further, the bearing 32 is a stainless steel ball bearing with a sealing element, the number of the connecting rods 30 is four, the four groups of connecting rods 30 divide the area between the circular ring 15 and the fixing ring 31 into four groups of fan-shaped areas, the filtering net 33 is arranged inside the circular ring 15, the number of the filtering net 33 is four, and the four groups of filtering nets 33 are respectively and fixedly arranged in the four groups of fan-shaped areas, so that most solid impurities in liquid can be intercepted when the liquid is input, and the impurities are prevented from entering the second installation area in the pump body 1 and being released from the impeller 12 rotating at high speed, and the impeller 12 is damaged.

Further, the outer wall of the pump body 1 is fixedly provided with first heat dissipation fins 13 by welding, the first heat dissipation fins 13 are located inside the first flow guide pipeline 2, the outer wall of the pump body 1 is fixedly provided with second heat dissipation fins 14 by welding, the second heat dissipation fins 14 are located inside the second flow guide pipeline 3, the number of the first heat dissipation fins 13 and the number of the second heat dissipation fins 14 are three to five, part of heat generated when the motor 7 inside the first installation area inside the pump body 1 operates is transmitted to the first heat dissipation fins 13 and the second heat dissipation fins 14 through the pump body 1, the first heat dissipation fins 13 and the second heat dissipation fins 14 transmit the heat to liquid passing through the first flow guide pipeline 2 and the second flow guide pipeline 3, and the motor 7 is assisted in heat dissipation.

Further, the outer wall of the motor 7 is fixedly provided with a first fixing block 8, the first fixing block 8 is detachably connected with the inner wall of the pump body 1 through a screw, the outer wall of the motor 7 is also fixedly provided with a second fixing block 9, and the second fixing block 9 is detachably connected with the inner wall of the pump body 1 through a screw, so that the motor 7 is firmly installed in the first installation area in the pump body 1.

Further, the front side outer wall of the pump body 1 is provided with a miniature air pump 16, a power supply circuit of the miniature air pump 16 is provided with an electromagnetic switch, the miniature air pump 16 is surrounded by two sets of fixing strips 17, both ends of the fixing strips 17 are welded and fixed with the front side outer wall of the pump body 1, an output end of the miniature air pump 16 is fixedly connected with a high-pressure air pipe 18, the front side outer wall of the pump body 1 is provided with a mounting hole, an airtight connector 19 is fixedly mounted at the mounting hole, one end of the high-pressure air pipe 18, which is far away from the miniature air pump 16, is fixedly connected with the airtight connector 19, the high-pressure air pipe 18 is communicated with a first mounting area inside the pump body 1, and the middle part of the.

Further, a controller 21, an air pressure sensor main body 22 and a water pressure sensor main body 26 are fixedly mounted on the outer wall of the rear side of the pump body 1, the air pressure sensor main body 22 comprises an air pressure sensor sensing probe 23 and an air pressure sensor conversion element 24, the water pressure sensor main body 26 comprises a water pressure sensor sensing probe 27 and a water pressure sensor conversion element 28, the pump body 1 is provided with a first through hole, one end of the air pressure sensor sensing probe 23 penetrates through the first through hole to enter a first mounting region inside the pump body 1, the pump body 1 is provided with a second through hole, one end of the water pressure sensor sensing probe 27 penetrates through the second through hole to enter a second mounting region inside the pump body 1, the air pressure sensor conversion element 24, the water pressure sensor conversion element 28 is connected with the controller 21 through a transmission line, and the controller 21 is connected with the electromagnetic valve 20 and the electromagnetic switch of the micro air pump 16 through transmission lines.

Furthermore, a first sealing ring 25 is fixedly installed in a circumferential gap between the air pressure sensor sensing probe 23 and the first through hole through a sealing glue, so that the sealing effect of the circumferential gap between the air pressure sensor sensing probe 23 and the first through hole is improved, and a second sealing ring 29 is fixedly installed in the circumferential gap between the water pressure sensor sensing probe 27 and the second through hole through a sealing glue, so that the sealing effect of the circumferential gap between the water pressure sensor sensing probe 27 and the second through hole is improved.

The working principle and the using process of the invention are as follows: when the water pressure sensor is used, the motor 7 is controlled to be started, when the motor 7 runs, the torque is transmitted to the rotating shaft 11 through the output shaft, so that the impeller 12 is driven to rotate at a high speed, acting force generated on liquid enables the liquid to be conveyed along the axial direction of the rotating shaft 11, the liquid is output through the first flow guide pipeline 2 and the second flow guide pipeline 3 to generate thrust, and advancing power is obtained, wherein the mechanical seal 10 is arranged at the bottom of the partition plate 6, so that the sealing effect of the circumferential gap between the rotating shaft 11 and the through hole can be effectively improved, meanwhile, a mode of increasing the air pressure in the first installation area in the pump body 1 is provided to avoid the leakage at the circumferential gap between the rotating shaft 11 and the through hole, in the main body structure of the water pressure sensor main body 26, the water pressure sensor sensing probe 27 senses the water pressure in the second installation area in the pump body 1, the induction signal is converted into an electric signal through the water pressure sensor conversion element 28, the electric signal is transmitted to the controller 21, in the structure of the air pressure sensor main body 22, the air pressure sensor induction probe 23 senses the air pressure in the first installation area in the pump body 1 in real time, the sensing information is transmitted to the air pressure sensor conversion element 24, the induction signal is converted into the electric signal through the air pressure sensor conversion element 24, the electric signal is transmitted to the controller 21, when the water pressure is higher than the air pressure, the controller 21 outputs a control command to control the electromagnetic switch and the electromagnetic valve 20 to be opened, the micro air pump 16 is started and compresses air, the first installation area in the pump body 1 is pressurized by taking the high-pressure air pipe 18 as a transmission channel, the air pressure in the first installation area in the pump body 1 is higher than the water pressure in the second installation area in the pump body 1, and the circumferential gap between the rotating shaft, providing protection for the motor 7.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.