阅读说明：本技术 一种船舶尾气排放净化装置 (Ship tail gas emission purification device ) 是由 徐茂军 于 2021-11-17 设计创作，主要内容包括：本发明公开了一种船舶尾气排放净化装置,包括过滤机构、过滤筒、离心净化机构以及初步净化机构,盆体的内底部固定连接有环形内筒,且盆体的内部通过隔离板隔离成多个环形区域；环形内筒的下部开设有用于内外环区域相通的透孔,离心净化机构包括安装在支撑架上的圆形筒,弧形板的侧面固定连接有若干双层网孔式的折流板,若干双层网孔式的折流板的内部分别安装有填充物,圆形筒的内部还安装有紫外线灯；过滤筒包括筒体,筒体的上下两端均固定连接有密封橡胶圈,锥形过滤网的下端与筒体的下端口部固定连接；还包括有DSP控制器,DSP控制器的控制输出端与电动液压推杆的电控端连接。本发明结构简单、能耗低,占用空间小,适用于船舶尾气净化使用。(The invention discloses a ship tail gas emission and purification device which comprises a filtering mechanism, a filter cartridge, a centrifugal purification mechanism and a primary purification mechanism, wherein the inner bottom of a pot body is fixedly connected with an annular inner cylinder, and the inside of the pot body is isolated into a plurality of annular areas through isolation plates; the centrifugal purification mechanism comprises a circular cylinder arranged on a support frame, the side surface of an arc plate is fixedly connected with a plurality of double-layer mesh-type baffle plates, fillers are respectively arranged inside the double-layer mesh-type baffle plates, and an ultraviolet lamp is also arranged inside the circular cylinder; the filter cartridge comprises a cylinder body, the upper end and the lower end of the cylinder body are fixedly connected with sealing rubber rings, and the lower end of the conical filter screen is fixedly connected with the lower port part of the cylinder body; the electric hydraulic push rod device is characterized by further comprising a DSP controller, and the control output end of the DSP controller is connected with the electric control end of the electric hydraulic push rod. The invention has simple structure, low energy consumption and small occupied space, and is suitable for purifying ship tail gas.)

1. The marine exhaust emission purification device is characterized by comprising a filtering mechanism (1), a filter cylinder (2), a centrifugal purification mechanism (3) and a primary purification mechanism (4);

the primary purification mechanism (4) comprises a gas collecting hood (405) and a pot body (401), an annular inner cylinder (402) is fixedly connected to the inner bottom of the pot body (401), and the inside of the pot body (401) is isolated into a plurality of annular areas through an isolation plate (404); the lower part of the annular inner cylinder (402) is provided with a through hole (403) for communicating an inner ring region with an outer ring region, the lower end of the gas collecting hood (405) is installed at the upper end of the annular inner cylinder (402) in a threaded connection manner, the inside of the gas collecting hood (405) is fixedly connected with a gas inlet pipe (406), the lower end of the gas inlet pipe (406) is in threaded connection with an inner ring body (408), the outer side of the inner ring body (408) is fixedly bonded with an annular filter cloth (407), the outer side of the annular filter cloth (407) is fixedly bonded with an outer ring body (409), and the outer ring body (409) is installed at the lower port part of the gas collecting hood (405) in a threaded connection manner; and one side of the upper part of the gas collecting hood (405) is communicated with a connecting pipe (303).

2. The marine exhaust emission control device according to claim 1, the centrifugal purification mechanism (3) comprises a round cylinder (302) with one closed end and horizontally arranged on a support frame (301), one end of the connecting pipe (303) is communicated with the upper part of one side of the round cylinder (302), the inner part of the round cylinder (302) is fixedly connected with an arc-shaped plate (306) which is in a spiral structural layout, the side surface of the arc-shaped plate (306) is fixedly connected with a plurality of double-layer mesh-hole baffle plates (307), the interiors of the double-layer mesh-hole baffle plates (307) are respectively provided with fillers (308), an ultraviolet lamp (309) is also arranged in the circular cylinder (302), a cover plate (304) is arranged at the mouth part at one side of the circular cylinder (302) in a threaded connection way, the center of the bottom of the other side of the round cylinder (302) is communicated with a gas-guide tube (107);

the filtering mechanism (1) comprises a box body (101) with a long strip-shaped structure, a supporting plate (102) is fixedly connected to the outer side of one end of the box body (101), an electric hydraulic push rod (103) which is horizontally arranged is fixedly installed on the upper portion of the supporting plate (102), one end of a piston rod (113) of the electric hydraulic push rod (103) penetrates through the end portion of the box body (101) and is fixedly connected with a top block (114), a storage barrel (104) is fixedly communicated with the top portion of the box body (101), and the filter cartridges (2) are installed in the storage barrel (104) in a stacking mode; an upper exhaust pipe (106) is fixedly communicated with the top of the box body (101), and a lower exhaust pipe (108) aligned with the upper exhaust pipe (106) is fixedly communicated with the bottom of the box body (101).

3. The marine exhaust emission purification device according to claim 2, wherein one end of the gas guide pipe (107) is communicated with one side of the lower exhaust pipe (108), the lower end of the lower exhaust pipe (108) is provided with an external thread (109), the lower end of the lower exhaust pipe (108) is provided with an ash containing box (110) in a threaded connection manner, the lower part of one end of the box body (101) is fixedly communicated with a discharge pipe (111), the lower end of the discharge pipe (111) is provided with an ash containing box (112) in a threaded connection manner, two sides of the interior of the box body (101) are respectively provided with a notch (116), the notches (116) are correspondingly arranged on two sides right above the lower exhaust pipe (108), and the interior of each notch (116) is fixedly connected with an elastic clamping block (115) for limiting the position of the filter cartridge (2);

the filter cartridge (2) comprises a cartridge body (201), the upper end and the lower end of the cartridge body (201) are fixedly connected with sealing rubber rings (202), the inside of the upper end of the cartridge body (201) is fixedly connected with a connecting rod (203), the middle part of the lower side of the connecting rod (203) is fixedly connected with a conical filter screen (204), and the lower end of the conical filter screen (204) is fixedly connected with the lower port part of the cartridge body (201);

still including the DSP controller, install baroceptor (5) on air duct (107), the signal output part of baroceptor (5) with the signal input part of DSP controller is connected, the control output part of DSP controller with the automatically controlled end of electronic hydraulic push rod (103) is connected.

4. The marine exhaust emission purification device according to claim 3, wherein the filler located at the inner and outer rings of the cylinder (302) is provided as a dust absorption cotton bag; the filler positioned in the middle ring inside the round barrel (302) is arranged into an activated carbon adsorption bag; the filling material in the inner circle of the circular cylinder (302) is arranged into a nano-scale titanium dioxide catalyst package, and the ultraviolet lamp (309) is arranged into a double-spectrum ultraviolet lamp which emits light with the wavelength of 185nm and 254 nm.

5. The marine exhaust emission purification device according to claim 4, wherein a pressure stabilizing valve is further mounted on the air inlet of the air collecting hood (405).

6. The marine exhaust emission purification device according to claim 5, wherein a circular flare (117) is arranged inside one end of the tank body (101), the flare (117) is arranged at the upper end of the discharge pipe (111), the inner diameter of the flare (117) is larger than the outer diameter of the filter cylinder (2) by 3-5mm, the storage cylinder (104) is arranged as a transparent plastic cylinder, a cap (105) is hinged to the upper end of the storage cylinder (104), one side of the arc-shaped plate (306) and one side of the double-layer mesh-type baffle plate (307) are flush with the opening of the circular cylinder (302), a handle (305) is fixedly arranged on the outer side of the cover plate (304), and a rubber pad is fixedly bonded inside one side of the cover plate (304).

7. The marine exhaust emission purification apparatus according to claim 6, wherein the bottom of the container (112) is configured as an inclined structure, and an upper end of the container (112) is opened.

8. The marine exhaust emission purification apparatus according to claim 7, wherein the conical filter screen (204) is configured as an activated carbon filter screen; the aperture of the inner hole of the filter cartridge (2) is larger than that of the upper exhaust pipe (106).

9. The marine exhaust emission purification apparatus as claimed in claim 8, wherein one end of the top block (114) is configured as an arc structure, and an elastic rubber pad is bonded inside the arc structure.

10. The marine exhaust emission purification apparatus according to claim 9, wherein the cross section of the outlet of the connection pipe (303) is a rectangular surface, and the outlet of the connection pipe (303) is parallel to the cross section of the arc-shaped plate (306) inside the circular cylinder (302).

Technical Field

The invention relates to the technical field of ship tail gas treatment, in particular to a ship tail gas emission purification device.

Background

In world freight transportation, ocean transportation occupies a large proportion. The ocean cargo transportation has the characteristics of large traffic capacity, large transportation volume, low transportation cost, strong adaptability to cargos, low speed, high risk and the like. At present, more than two thirds of the total freight volume of international trade, 90% of the total freight volume of import and export goods in China are transported by ocean.

With the rapid increase of the number of transport ships, pollution and harm of pollutants discharged by ships to the atmospheric environment and the marine environment are becoming more and more serious. The tail gas discharged by the combustion of the marine diesel engine is mainly sulfur dioxide SO₂And nitrogen oxide NO₂Mainly for reducing sulfur oxides SO in the ship exhaust₂Nitrogen oxide NO₂And the influence of the particulate matter on the atmospheric environment, the most direct method is to reduce the sulfur content and the nitrogen content in the marine fuel oil.

Even if the sulfur content and the nitrogen content in the marine fuel oil are reduced, a large amount of waste gas is released when the marine fuel oil is used; the existing integrated device for carrying out desulfurization, denitrification and particle removal on the waste gas has overlarge volume and overhigh energy consumption, and is not suitable for being used on ships; therefore, a new exhaust emission purifying device for ships needs to be researched.

Disclosure of Invention

Aiming at the defects, the invention provides the ship tail gas emission and purification device, the interior of the basin body is divided into a plurality of areas by the basin body, the annular inner cylinder and the partition plate of the primary purification mechanism, different waste gas purification solutions are put into each area, the surfaces of the solutions can be contacted with waste gas and absorb harmful gas in the waste gas, and the particles in the waste gas can be filtered by utilizing the annular filter cloth, so that the primary absorption and purification effects are achieved, excessive manual intervention is not needed in the whole process, and the ship tail gas emission and purification device is convenient to use; different fillers are added into the double-layer net-shaped baffle plate of the centrifugal purification mechanism, so that harmful gases can be removed in a targeted, staged and sequential manner, and particle impurities are further removed by utilizing the centrifugal force; meanwhile, the nano-scale titanium dioxide catalyzed by ultraviolet rays has stronger catalytic activity, and can remove the main harmful gas, namely sulfur and nitrogen oxides, in a targeted manner; adsorb through filtering mechanism is become more meticulous at last and purify, and in the use, can realize changing the cartridge filter automatically, need not artificial intervention, above-mentioned problem is solved to very convenience.

The technical scheme of the invention is realized as follows:

a ship tail gas emission and purification device, which comprises a filtering mechanism, a filter cylinder, a centrifugal purification mechanism and a primary purification mechanism,

the primary purification mechanism comprises a gas collecting hood and a pot body, wherein the inner bottom of the pot body is fixedly connected with an annular inner cylinder, and the inside of the pot body is isolated into a plurality of annular areas through an isolation plate; the lower part of the annular inner cylinder is provided with a through hole for communicating an inner annular region and an outer annular region, the lower end of the gas collecting hood is installed at the upper end of the annular inner cylinder in a threaded connection mode, the inside of the gas collecting hood is fixedly connected with a gas inlet pipe, the lower end of the gas inlet pipe is in threaded connection with an inner ring body, the outer side of the inner ring body is fixedly bonded with annular filter cloth, the outer side of the annular filter cloth is fixedly bonded with an outer ring body, and the outer ring body is installed at the lower end opening part of the gas collecting hood in a threaded connection mode; one side of the upper part of the gas-collecting hood is communicated with a connecting pipe;

the centrifugal purification mechanism comprises a circular cylinder with one closed end and horizontally arranged on a support frame, one end of a connecting pipe is communicated with the upper part of one side of the circular cylinder, an arc plate in a spiral structural layout is fixedly connected inside the circular cylinder, a plurality of double-layer mesh-type baffle plates are fixedly connected to the side surface of the arc plate, fillers are respectively arranged inside the double-layer mesh-type baffle plates, an ultraviolet lamp is also arranged inside the circular cylinder, a cover plate is arranged at the opening part of one side of the circular cylinder in a threaded connection mode, and an air guide pipe is communicated with the center of the bottom of the other side of the circular cylinder;

the filter mechanism comprises a box body with a long strip-shaped structure, a supporting plate is fixedly connected to the outer side of one end of the box body, an electric hydraulic push rod which is horizontally arranged is fixedly installed on the upper portion of the supporting plate, one end of a piston rod of the electric hydraulic push rod penetrates through the end portion of the box body and is fixedly connected with a top block, a storage barrel is fixedly communicated with the top of the box body, and the filter barrels are installed in the storage barrel in a stacking mode; the top of the box body is fixedly communicated with an upper exhaust pipe, and the bottom of the box body is fixedly communicated with a lower exhaust pipe aligned with the upper exhaust pipe;

one end of the air guide pipe is communicated with one side of the lower exhaust pipe, the lower end of the lower exhaust pipe is provided with external threads, the lower end of the lower exhaust pipe is provided with an ash containing box in a threaded connection mode, the lower part of one end of the box body is fixedly communicated with a discharge pipe, the lower end of the discharge pipe is provided with a containing box in a threaded connection mode, two sides of the interior of the box body are respectively provided with a notch, the notches are correspondingly arranged on two sides right above the lower exhaust pipe, and the interior of each notch is fixedly connected with an elastic clamping block for limiting the position of the filter cartridge;

the filter cartridge comprises a cartridge body, wherein the upper end and the lower end of the cartridge body are both fixedly connected with a sealing rubber ring, the inner part of the upper end of the cartridge body is fixedly connected with a connecting rod, the middle part of the lower side of the connecting rod is fixedly connected with a conical filter screen, and the lower end of the conical filter screen is fixedly connected with the lower port part of the cartridge body;

the pneumatic control device is characterized by further comprising a DSP controller, wherein an air pressure sensor is installed on the air guide tube, a signal output end of the air pressure sensor is connected with a signal input end of the DSP controller, and a control output end of the DSP controller is connected with an electric control end of the electric hydraulic push rod.

Preferably, the filler positioned on the outer ring in the circular cylinder is a dust absorption cotton bag; the filler positioned in the middle ring in the circular cylinder is arranged into an activated carbon adsorption bag; the filler positioned in the inner ring of the circular cylinder is arranged into a nano-scale titanium dioxide catalyst bag, and the ultraviolet lamp is arranged into a double-spectrum ultraviolet lamp which emits light with the wavelength of 185nm and 254 nm.

Preferably, a pressure stabilizing valve is further mounted on the air inlet of the air collecting hood.

Preferably, a circular flaring is arranged in one end of the box body, the flaring is arranged at the upper end of the discharge pipe, and the inner diameter of the flaring is 3-5mm larger than the outer diameter of the filter cylinder.

Preferably, the storage barrel is a transparent plastic barrel, and the upper end of the storage barrel is hinged with a cover cap.

Preferably, one side of each of the arc-shaped plate and the double-layer mesh-hole baffle plate is flush with the opening of the circular cylinder, a handle is fixedly mounted on the outer side of the cover plate, and a rubber pad is fixedly bonded inside one side of the cover plate.

Preferably, the bottom of the containing box is of an inclined structure, and the upper end of the containing box is provided with an open mouth.

Preferably, the conical filter screen is an activated carbon filter screen; the aperture of the inner hole of the filter cartridge is larger than that of the inner hole of the upper exhaust pipe.

Preferably, one end of the top block is of an arc-shaped structure, and an elastic rubber pad is bonded inside the arc-shaped structure.

Preferably, the section of the air outlet of the connecting pipe is a rectangular surface, and the air outlet of the connecting pipe is parallel to the section of the arc-shaped plate in the circular cylinder.

Compared with the prior art, the invention has the advantages and positive effects that:

1. according to the ship tail gas emission and purification device, the interior of the basin body is divided into a plurality of areas through the basin body, the annular inner cylinder and the partition plate of the primary purification mechanism, different waste gas purification solutions are placed in each area, the surfaces of the solutions can be contacted with waste gas and absorb harmful gas in the waste gas, particles in the waste gas can be filtered by the annular filter cloth, the primary absorption and purification effects are achieved, excessive manual intervention is not needed in the whole process, and the ship tail gas emission and purification device is convenient to use;

2. according to the ship tail gas emission and purification device, different fillers are added into the double-layer net-shaped baffle plate of the centrifugal purification mechanism, harmful gases can be removed in a targeted, staged and sequential manner, and particle impurities are further removed by utilizing the centrifugal force; meanwhile, the nano-scale titanium dioxide catalyzed by ultraviolet rays has stronger catalytic activity, and can remove the main harmful gas, namely sulfur and nitrogen oxides, in a targeted manner;

3. according to the ship tail gas emission purification device, the filter mechanism is used for finally and finely adsorbing and purifying, the filter cartridge can be replaced in the using process, manual intervention is not needed, and the ship tail gas emission purification device is very convenient;

4. the ship tail gas emission and purification device disclosed by the invention is simple in structure, low in energy consumption, small in occupied space and suitable for purifying the ship tail gas.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a marine exhaust emission purification apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the external structure of a preliminary cleaning mechanism according to an embodiment of the present invention;

fig. 3 is a schematic view of the internal structure of a gas collection enclosure according to an embodiment of the invention;

FIG. 4 is a schematic structural view of a tub according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a centrifugal purge mechanism according to an embodiment of the invention;

FIG. 6 is a schematic view of the internal structure of a circular cylinder according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a filter mechanism according to an embodiment of the invention;

FIG. 8 is a schematic structural diagram of a case according to an embodiment of the present invention;

FIG. 9 is a schematic view of a partial top view of the interior of a cabinet according to an embodiment of the invention;

fig. 10 is a schematic structural view of a filter cartridge according to an embodiment of the present invention.

In the figure:

1. a filtering mechanism; 2. a filter cartridge; 3. a centrifugal purification mechanism; 4. a preliminary purification mechanism; 5. an air pressure sensor;

101. a box body; 102. a support plate; 103. an electric hydraulic push rod; 104. a storage cylinder; 105. capping; 106. an upper exhaust pipe; 107. an air duct; 108. a lower exhaust pipe; 109. an external thread; 110. a dust containing box; 111. a discharge pipe; 112. a containing box; 113. a piston rod; 114. a top block; 115. an elastic clamping block; 116. a recess; 117. flaring;

201. a barrel; 202. sealing the rubber ring; 203. a connecting rod; 204. a conical filter screen;

301. a support frame; 302. a circular cylinder; 303. a connecting pipe; 304. a cover plate; 305. a handle; 306. an arc-shaped plate; 307. a double-layer mesh type baffle plate; 308. a filler; 309. an ultraviolet lamp;

401. a pot body; 402. an annular inner barrel; 403. through holes; 404. a separator plate; 405. a gas-collecting hood; 406. an air inlet pipe; 407. an annular filter cloth; 408. an inner ring body; 409. an outer ring body.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

The invention is further described with reference to the following figures and specific examples.

Example 1

As shown in fig. 1-10, a marine exhaust emission purification device according to an embodiment of the present invention includes a filter mechanism 1, a filter cartridge 2, a centrifugal purification mechanism 3 and a preliminary purification mechanism 4,

the primary purification mechanism 4 comprises a gas collecting hood 405 and a pot body 401, an annular inner cylinder 402 is fixedly connected to the inner bottom of the pot body 401, and the inside of the pot body 401 is isolated into a plurality of annular areas through an isolation plate 404; the lower part of the annular inner cylinder 402 is provided with a through hole 403 for communicating an inner annular region and an outer annular region, the lower end of a gas collecting hood 405 is installed at the upper end of the annular inner cylinder 402 in a threaded connection mode, the inside of the gas collecting hood 405 is fixedly connected with a gas inlet pipe 406, the lower end of the gas inlet pipe 406 is in threaded connection with an inner ring body 408, the outer side of the inner ring body 408 is fixedly bonded with an annular filter cloth 407, the aperture of the annular filter cloth 407 is set to be 20-30 meshes, the outer side of the annular filter cloth 407 is fixedly bonded with an outer ring body 409, and the outer ring body 409 is installed at the lower end opening part of the gas collecting hood 405 in a threaded connection mode; one side of the upper part of the gas-collecting hood 405 is communicated with a connecting pipe 303;

the centrifugal purification mechanism 3 comprises a circular cylinder 302 with one closed end and horizontally arranged on a support frame 301, one end of a connecting pipe 303 is communicated with the upper part of one side of the circular cylinder 302, an arc-shaped plate 306 in a spiral structural layout is fixedly connected inside the circular cylinder 302, a plurality of double-layer mesh-type baffle plates 307 are fixedly connected to the side surfaces of the arc-shaped plate 306, fillers 308 are respectively arranged inside the double-layer mesh-type baffle plates 307, an ultraviolet lamp 309 is also arranged inside the circular cylinder 302, a cover plate 304 is arranged at the opening part of one side of the circular cylinder 302 in a threaded connection mode, and the center of the bottom of the other side of the circular cylinder 302 is communicated with an air guide pipe 107;

the filtering mechanism 1 comprises a box body 101 with a long strip-shaped structure, a supporting plate 102 is fixedly connected to the outer side of one end of the box body 101, an electric hydraulic push rod 103 which is horizontally arranged is fixedly installed at the upper part of the supporting plate 102, one end of a piston rod 113 of the electric hydraulic push rod 103 penetrates through the end part of the box body 101 and is fixedly connected with a top block 114, a storage barrel 104 is fixedly communicated with the top of the box body 101, and the filter cartridges 2 are installed in the storage barrel 104 in a stacking manner; an upper exhaust pipe 106 is fixedly communicated with the top of the box body 101, and a lower exhaust pipe 108 aligned with the upper exhaust pipe 106 is fixedly communicated with the bottom of the box body 101;

one end of the gas guide pipe 107 is communicated with one side of the lower exhaust pipe 108, the lower end of the lower exhaust pipe 108 is provided with external threads 109, the lower end of the lower exhaust pipe 108 is provided with an ash containing box 110 in a threaded connection mode, the lower part of one end of the box body 101 is fixedly communicated with a discharge pipe 111, the lower end of the discharge pipe 111 is provided with a containing box 112 in a threaded connection mode, two sides in the box body 101 are respectively provided with a notch 116, the notches 116 are correspondingly arranged on two sides right above the lower exhaust pipe 108, and the interior of the notch 116 is fixedly connected with an elastic clamping block 115 for limiting the position of the filter cartridge 2;

the filter cartridge 2 comprises a cartridge body 201, the upper end and the lower end of the cartridge body 201 are both fixedly connected with a sealing rubber ring 202, the inner part of the upper end of the cartridge body 201 is fixedly connected with a connecting rod 203, the middle part of the lower side of the connecting rod 203 is fixedly connected with a conical filter screen 204, and the lower end of the conical filter screen 204 is fixedly connected with the lower port part of the cartridge body 201;

the pneumatic control device further comprises a DSP controller, an air duct 107 is provided with an air pressure sensor 5, the signal output end of the air pressure sensor 5 is connected with the signal input end of the DSP controller, and the control output end of the DSP controller is connected with the electric control end of the electric hydraulic push rod 103.

The filler 308 inside the circular cylinder 302 may be divided into 3 layers at a distance from the central axis of the circular cylinder 302: the inner ring is divided into the inner rings which are closest to the central axis, the outer rings which are farthest from the central axis, and the middle ring is divided into the inner rings and the outer rings. In particular, in practice, the filler 308 located at the inner and outer rings of the cylinder 302 is provided as a dust absorption cotton bag; the filler 308 positioned in the middle ring inside the circular cylinder 302 is arranged into an activated carbon adsorption bag; the packing 308 located at the inner circle of the circular tube 302 is provided as a nano-sized titanium dioxide catalyst pack, and the ultraviolet lamp 309 is provided as a double spectrum ultraviolet lamp emitting wavelengths of 185nm and 254 nm.

By adopting the technical scheme, the dust absorption cotton bag is made by wrapping the oil absorption cotton by the non-woven fabric net, residual oil in the waste gas can be absorbed by the oil absorption cotton, particles in the waste gas can be absorbed by the activated carbon absorption bag, and the particles in the waste gas can be well removed by matching with a centrifugal mode when the waste gas travels; the nano-scale titanium dioxide catalyst package is matched with ultraviolet rays to play a role in catalysis, so that the sulfur nitrogen oxide is reduced into non-harmful substances.

In practice, a pressure maintaining valve is also mounted on the gas inlet of the gas collecting hood 405. The pressure stabilizing valve is used for providing relatively stable air pressure, and avoiding the air pressure from generating larger fluctuation to influence the accuracy of air pressure detection of the subsequent air pressure sensor 5.

As shown in fig. 9, one end of the housing 101 is internally provided with a circular flare 117, the flare 117 being provided at the upper end of the discharge pipe 111, the inside diameter of the flare 117 being 3-5mm larger than the outside diameter of the filter cartridge 2.

By adopting the technical scheme, the inner diameter of the flaring 117 is relatively large, so that the filter cartridge 2 can fall without hindrance, and the phenomenon of material jamming inside the box body 101 is avoided.

Specifically, as shown in fig. 7, the storage barrel 104 is provided as a transparent plastic barrel, and the upper end of the storage barrel 104 is hinged with a cap 105.

Adopt above-mentioned technical scheme, the convenient observation of transparent plastic section of thick bamboo, when storage cylinder 104 is inside to lack cartridge filter 2, can in time add.

In practice, one side of the arc plate 306 and one side of the double-layer mesh-type baffle plate 307 are flush with the opening of the circular cylinder 302, the handle 305 is fixedly installed on the outer side of the cover plate 304, and a rubber pad is fixedly adhered to the inner side of one side of the cover plate 304.

By adopting the technical scheme, the arc-shaped plate 306 and the double-layer mesh-hole baffle 307 are arranged in parallel with the opening of the circular cylinder 302, so that a one-way channel is formed inside the circular cylinder 302 after the cover plate 304 is covered, and streaming is avoided; and the rubber pad can be attached to the arc-shaped plate 306 and the double-layer mesh-hole baffle plate 307 to seal the side surfaces of the arc-shaped plate 306 and the double-layer mesh-hole baffle plate.

As shown in fig. 1, the bottom of the containing box 112 is disposed in an inclined structure, and an upper end of the containing box 112 is opened.

Adopt above-mentioned technical scheme, hold box 112 and be used for holding the cartridge filter 2 after the use, the bottom of slope avoids the cartridge filter 2 to block, and the open mouth is convenient for observe and take out cartridge filter 2 on upper portion.

Specifically, the conical filter screen 204 is an activated carbon filter screen; the bore diameter of the filter cartridge 2 is larger than the bore diameter of the upper vent pipe 106.

Adopt above-mentioned technical scheme, the lower port part of cartridge filter 2 need wrap up at the last port part of lower blast pipe 108, and the internal diameter of last blast pipe 106 and lower blast pipe 108 equals, and waste gas passes in cartridge filter 2 completely, and cooperation sealing rubber circle 202 can not cause the leakage.

Specifically, one end of the top block 114 is configured as an arc-shaped structure, and an elastic rubber pad is bonded inside the arc-shaped structure. The section of the air outlet of the connecting pipe 303 is a rectangular surface, and the air outlet of the connecting pipe 303 is parallel to the section of the arc-shaped plate 306 inside the circular cylinder 302.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In the actual application of the method, the device is used,

firstly, pouring corresponding absorption solution (such as alkali solution, acid solution or water) into each area in the pot body 401, wherein the height of the solution needs to be higher than that of the through holes 403, and meanwhile, the pressure difference needs to be considered, so that the phenomenon that the internal air pressure is too high and the gas is directly sprayed out of the through holes 403 is avoided; in practice, the height of the solution is at least 30cm higher than the top of the through holes 403;

introducing waste gas, and filtering the waste gas into the circular cylinder 302 through the annular filter cloth 407 after the waste gas is contacted and absorbed with the solution surface of each area; the deflection channel within the cylinder 302 is further purged and then into the lower exhaust pipe 108;

in the lower exhaust pipe 108, the final purification is completed by the filtration of the filter cartridge 2; the air pressure condition at the front part of the filter cartridge 2 can be detected by the action of the air pressure sensor 5; when the air pressure of the front part of the filter cartridge 2 is slowly increased and kept for a period of time, the surface impurities of the filter cartridge 2 are too much, the filtering efficiency is reduced, the new filter cartridge 2 is pushed by controlling the electric hydraulic push rod 103 and the old filter cartridge 2 is ejected out, the replacement of the filter cartridge 2 is completed, the automatic operation is realized, the manual intervention is not needed, the shutdown is not needed, and the convenience is very high.

In summary, the marine exhaust emission purification device of the present invention divides the interior of the basin 401 into a plurality of regions through the basin 401, the annular inner cylinder 402 and the partition plate 404 of the preliminary purification mechanism 4, wherein different exhaust gas purification solutions are placed in each region, and the surfaces of the solutions can contact with the exhaust gas and absorb harmful gases in the exhaust gas, and the annular filter cloth 407 can filter particles in the exhaust gas to perform a preliminary absorption and purification function, so that the whole process does not require excessive manual intervention, and is convenient to use; different fillers 308 are added into the double-layer mesh-type baffle plate 307 of the centrifugal purification mechanism 3, so that harmful gases can be removed in a targeted manner, in stages and in sequence, and particle impurities are further removed by utilizing the centrifugal force; meanwhile, the nano-scale titanium dioxide catalyzed by ultraviolet rays has stronger catalytic activity, and can remove the main harmful gas, namely sulfur and nitrogen oxides, in a targeted manner; the filter mechanism 1 is used for finally and finely adsorbing and purifying, and in the using process, the filter cartridge 2 can be automatically replaced without human intervention, so that the filter mechanism is very convenient; the invention has simple structure, low energy consumption and small occupied space, and is suitable for purifying ship tail gas.

The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.