Waste gas collection and purification treatment equipment

Abstract

The utility model discloses waste gas collection and purification treatment equipment, which belongs to the technical field of air purification and comprises a box body, and the upper end of the box body is connected with a gas inlet pipeline; the air inlet pipeline is connected with the air suction device through a pipeline; the upper end of the box is connected with a gas outlet pipeline; the left end inside the box body is connected with a primary filtering mechanism; the right end inside the box body is connected with a wet filtering mechanism; a dust collecting box is slidably connected to the left side of the bottom in the box; the primary filtering mechanism comprises a primary filtering assembly and an online replacing assembly; the primary filtering assembly is connected to the left side of the bottom in the box body; the on-line replacement assembly is connected to the inner side wall of the box body. In this way, waste gas enters the left end of the inner side of the box body through the gas inlet pipeline, the waste gas is primarily filtered through the primary filtering assembly, and dust with large particles is collected by the dust collecting box; the primarily filtered waste gas enters the right end of the inner side of the box body, is subjected to wet filtration by the wet filtration mechanism and is finally discharged from the gas outlet pipeline, so that graded filtration of the waste gas is realized; after the dust collecting box is filled with dust, online replacement of the dust collecting box is achieved through the online replacement assembly, and the device does not need to be shut down.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, specifically to waste gas collection, purification and treatment equipment. Background Technology

[0002] The booming automotive industry and the continuous expansion of automotive parts manufacturing scale have led to a large amount of dust generated during the grinding process of automotive motor housings. This dust not only threatens the health of workshop workers, causing occupational diseases such as pneumoconiosis, but also pollutes the production environment and reduces equipment operating efficiency and product quality.

[0003] Chinese patent CN212818920U discloses a waste gas treatment device capable of efficiently collecting dust, comprising a base, a dust suction port, and a liquid storage frame. Rollers are installed at the lower ends of the base, and a housing is welded to the upper end of the base. A water pump is distributed on one side of the lower end of the liquid storage frame, with a water supply pipe connected to the outer end of the pump. A large-diameter spiral nozzle is connected to the other end of the water supply pipe. An outlet pipe is fixed to the upper part of the other end of the liquid storage frame, with a purification mechanism in the middle of the outlet pipe and an outlet at the top. However, this device still has the following problems:

[0004] The device performs initial filtration through a filter screen and further filtration through a demisting layer and an activated carbon adsorption layer. However, when the dust collection chamber of the device is full, the device needs to be shut down to clean the dust in the dust collection chamber, which reduces the filtration efficiency of the device.

[0005] Based on this, the present invention designs a waste gas collection and purification treatment device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a waste gas collection and purification treatment device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] Waste gas collection and purification equipment, including the housing;

[0009] An air inlet pipe is fixedly connected to the upper left side of the box; the air inlet pipe is connected to the air intake device through a pipe; an air outlet pipe is fixedly connected to the upper right side of the box; a water inlet pipe is fixedly connected to the upper part of the box; a sewage discharge pipe is provided on the lower side of the box; a primary filter mechanism for primary filtration of exhaust gas is connected to the inner left side of the box; a wet filter mechanism for wet filtration of the primary filtered exhaust gas is connected to the inner right side of the box; a dust collection box is slidably connected to the bottom left side of the box, and a handle is fixedly connected to the left end of the dust collection box.

[0010] The primary filter mechanism comprises a primary filter assembly and an online replacement assembly, the primary filter assembly for primary filtering of the exhaust gas is connected to the left side of the inner bottom of the box, and the online replacement assembly for online replacement of the ash collecting box is connected to the side wall of the inner side of the box.

[0011] Further, the primary filter assembly comprises a partition plate, a primary filter screen plate, an inclined block one and an inclined block two, the partition plate is fixedly connected to the inner bottom of the box and separates the inner part of the box, the right end of the partition plate is provided with water for wet filtering of the exhaust gas, the side wall of the partition plate is fixedly connected with a plurality of primary filter screen plates, the front and rear end of the inclined block one is fixedly connected with the inner front and rear walls of the box, and the inner bottom of the ash collecting box is fixedly connected with the inclined block two.

[0012] Further, the online replacement assembly comprises a fixed plate, a moving plate, a magnetic block one and a magnetic block two, the front and rear end of the fixed plate is fixedly connected with the inner front and rear walls of the box, a sliding groove is arranged between the fixed plate and the inclined block one, the moving plate is limitingly and slidingly connected with the sliding groove, the left side of the lower end of the moving plate is fixedly connected with the magnetic block one, and the right side of the upper end of the ash collecting box is fixedly connected with the magnetic block two.

[0013] Further, the wet filter mechanism comprises a wet filter assembly and a pollution discharge assembly, the wet filter assembly for wet filtering of the exhaust gas is connected to the right end of the inner bottom of the box, and the pollution discharge assembly for scraping the sludge at the right end of the inner bottom of the box is connected to the right end of the inner bottom of the box.

[0014] Further, the wet filter assembly comprises a fine filter screen plate, a conveying pipeline and a sensor, the fine filter screen plate is fixedly connected to the right end of the partition plate and the side wall of the fine filter screen plate is fixedly connected with the side wall of the inner side of the box, a plurality of conveying pipelines are arranged at the right end of the partition plate and the conveying pipelines correspond to the primary filter screen plates one by one, the air inlet end of the conveying pipeline is fixedly connected to the right end of the partition plate and the air inlet end of the conveying pipeline is in alignment with the primary filter screen plate, the air outlet end of the conveying pipeline penetrates through the fine filter screen plate, and the rear inner wall of the box is fixedly connected with the sensor.

[0015] Further, the sensor is a water level sensor.

[0016] Further, the pollution discharge assembly comprises a driving motor, a rotating rod, a driving wheel, a driven wheel, a belt and a scraping assembly, the front and rear end of the rotating rod is rotatably connected with the inner front and rear walls of the box, the driving motor is fixedly connected to the front end of the box and the output end of the driving motor is fixedly connected with the front end of the rotating rod, the side wall of the rotating rod is fixedly connected with the front and rear driving wheels which are symmetrically arranged, the inner front and rear walls of the box are rotatably connected with the driven wheels, the driving wheel on the same side is in transmission connection with the driven wheel on the same side through the belt, and the lower side of the belt is connected with the scraping assembly.

[0017] Furthermore, the scraping assembly includes a moving block, a telescopic block, a first spring, an arc-shaped block, a telescopic plate, a second spring, a drive block, and a sewage discharge box. One end of the moving block is fixedly connected to a belt; the other end of the moving block is slidably connected to the telescopic block; multiple first springs are provided inside the moving block; one end of the first spring is fixedly connected to the inner end of the telescopic block, and the other end of the first spring is fixedly connected to the inner wall of the moving block; an arc-shaped block is fixedly connected to the right end of the partition plate, and the lower end of the arc-shaped block is fixedly connected to the bottom of the box; a limit groove is provided on the right side of the bottom of the box; the telescopic plate is slidably connected to the limit groove; multiple second springs are provided inside the limit groove; one end of the second spring is fixedly connected to the right end of the telescopic plate; the other end of the second spring is fixedly connected to the inner wall of the right side of the limit groove; drive blocks are fixedly connected symmetrically on the left side of the upper part of the telescopic plate; a sewage discharge box is provided on the lower side of the telescopic plate; the upper end of the sewage discharge box is fixedly connected to the lower end of the box; a sewage discharge pipe is fixedly connected to the lower end of the sewage discharge box.

[0018] Compared with the prior art, the advantages of this utility model are as follows: the exhaust gas is transported to the intake pipe through the suction device, and the exhaust gas enters the left side of the box body through the intake pipe. The exhaust gas is initially filtered by the primary filter component, and larger dust particles are collected by the dust collection box. The exhaust gas after primary filtration enters the right side of the box body, and is then wet filtered by the wet filter mechanism before finally being discharged from the exhaust pipe, thus achieving graded filtration and purification of the exhaust gas. When the dust collection box is full of dust, it can be replaced online by the online replacement component, without the need to stop the device, thus improving the operating efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This utility model provides a three-dimensional waste gas collection and purification treatment device. Figure 1 ;

[0021] Figure 2 This is a front view of the waste gas collection and purification treatment equipment of this utility model;

[0022] Figure 3 This is a right view of the waste gas collection and purification treatment equipment of this utility model;

[0023] Figure 4 For along Figure 2 A three-dimensional diagram of AA with a portion removed;

[0024] Figure 5 For along Figure 3a perspective view of the B-B section with a part removed;

[0025] Figure 6 for Figure 5 an enlarged view of C in the middle;

[0026] Figure 7 for Figure 5 an enlarged view of D in the middle.

[0027] The reference signs in the drawings represent: 11, box; 12, air inlet pipeline; 13, air outlet pipeline; 14, water inlet pipeline; 15, blowdown pipeline; 16, dust collecting box; 161, handle; 211, partition plate; 212, primary filter screen plate; 213, inclined block one; 214, inclined block two; 221, fixed plate; 222, moving plate; 223, magnetic block one; 224, magnetic block two; 311, fine filter screen plate; 312, conveying pipeline; 313, sensor; 321, driving motor; 322, rotating rod; 323, driving wheel; 324, driven wheel; 325, belt; 331, moving block; 332, telescopic block; 333, spring one; 334, arc-shaped block; 335, telescopic plate; 336, spring two; 337, driving block; 338, blowdown tank; 339, limiting groove. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the following description, "left", "right", "front", "back", "up", "down" are oriented with the perspective of the front view.

[0030] Embodiment one: in some embodiments, referring to the drawings of the specification Figures 1-7 , the exhaust gas collection and purification treatment equipment comprises a box 11;

[0031] The left side of the upper end of the box body 11 is fixedly connected with an air inlet pipeline 12; the air inlet pipeline 12 is connected with an air suction device through a pipeline; the right side of the upper end of the box body 11 is fixedly connected with an air outlet pipeline 13; the upper end of the box body 11 is fixedly connected with a water inlet pipeline 14; the lower side of the box body 11 is provided with a blowdown pipeline 15; the left end of the inner side of the box body 11 is connected with a primary filtering mechanism for primary filtering of waste gas; the right end of the inner side of the box body 11 is connected with a wet filtering mechanism for wet filtering of the primary filtered waste gas; the left end of the dust collecting box 16 is fixedly connected with a handle 161.

[0032] The primary filtering mechanism comprises a primary filtering assembly and an online replacement assembly; the primary filtering assembly for primary filtering of waste gas is connected to the left side of the inner bottom of the box body 11; the online replacement assembly for online replacement of the dust collecting box 16 is connected to the side wall of the inner side of the box body 11; the online replacement assembly is connected to the lower side of the primary filtering assembly.

[0033] In the utility model, the waste gas is transported to the air inlet pipeline 12 through the pipeline by the air suction device, the waste gas enters the left end of the inner side of the box body 11 through the air inlet pipeline 12, the waste gas is primary filtered through the primary filtering assembly, and the dust with large particles is collected by the dust collecting box 16; the primary filtered waste gas enters the right end of the inner side of the box body 11, and the waste gas is finally discharged from the air outlet pipeline 13 after wet filtering through the wet filtering mechanism, so that the waste gas is realized to be filtered and purified in stages; when the dust collecting box 16 is filled with dust, the online replacement of the dust collecting box 16 is realized through the online replacement assembly, the device does not need to be stopped, and the operation efficiency is improved.

[0034] The primary filtering assembly comprises a partition plate 211, a primary filtering screen plate 212, an inclined block one 213 and an inclined block two 214; the partition plate 211 for separating the inner side of the box body 11 is fixedly connected to the inner bottom of the box body 11; the partition plate 211 is provided with water for wet filtering of waste gas on the right end; the side wall of the partition plate 211 is fixedly connected with a plurality of primary filtering screen plates 212; the front and rear inner walls of the box body 11 are respectively fixedly connected with the front and rear ends of the inclined block one 213; the inner bottom of the dust collecting box 16 is fixedly connected with the inclined block two 214;

[0035] The online replacement assembly comprises a fixed plate 221, a moving plate 222, a magnetic block one 223 and a magnetic block two 224; the front and rear inner walls of the box body 11 are respectively fixedly connected with the front and rear ends of the fixed plate 221; the fixed plate 221 and the inclined block one 213 are provided with a sliding groove, the moving plate 222 is limitingly and slidably connected with the sliding groove; the left side of the lower end of the moving plate 222 is fixedly connected with the magnetic block one 223; the right side of the upper end of the dust collecting box 16 is fixedly connected with the magnetic block two 224.

[0036] The utility model discloses, through the primary filter screen board 212 carries out primary filtration to waste gas, and the larger dust and waste chip moves to the inside right end of dust collecting box 16 along inclined block no. 1 213, and dust moves to the inside right end of dust collecting box 16 along inclined block no. 2 214 after entering the inside right end of dust collecting box 16, improve the utilization of the inside volume of dust collecting box 16, when the inside right end of dust collecting box 16 is filled with dust, through handle 161 pull dust collecting box 16 drive magnetic block no. 2 224 to move left, when magnetic block no. 2 224 moves to magnetic block no. 1 223, magnetic block no. 2 224 drive moving plate 222 to move left through magnetic block no. 1 223, when moving plate 222 left end and the left side inner wall of box 11 abut, magnetic block no. 2 224 continues to move left and separates from magnetic block no. 1 223, when this dust moves to the upper end of moving plate 222 along inclined block no. 1 213 and stores temporarily, when handle 161 pushes new dust collecting box 16 to move to the inside of box 11, dust collecting box 16 drive magnetic block no. 2 224 drive moving plate 222 to move right through magnetic block no. 1 223, when moving plate 222 right end and the left end of baffle 211 abut, magnetic block no. 2 224 continues to move right and separates from magnetic block no. 1 223, and the dust on the upper end of moving plate 222 is pushed to the inside of dust collecting box 16 through inclined block no. 1 213 simultaneously, realize that dust collecting box 16 is replaced on line, need not device shutdown, improve operating efficiency.

[0037] The wet filter mechanism includes a wet filter assembly and a blowdown assembly, the wet filter assembly for wet filtering the exhaust gas is connected to the right end of the inner bottom of the box body 11, and the blowdown assembly for scraping the sludge on the right end of the inner bottom of the box body 11 is connected to the right end of the inner bottom of the box body 11.

[0038] The wet filter assembly includes a fine filter screen plate 311, a conveying pipeline 312, and a sensor 313, the fine filter screen plate 311 is fixedly connected to the right end of the baffle 211, and the side wall of the fine filter screen plate 311 is fixedly connected to the inner side wall of the box body 11; a plurality of conveying pipelines 312 are arranged at the right end of the baffle 211, and each conveying pipeline 312 corresponds to one primary filter screen plate 212; the gas inlet end of the conveying pipeline 312 is fixedly connected to the right end of the baffle 211, and the gas inlet end of the conveying pipeline 312 is aligned with the primary filter screen plate 212; the gas outlet end of the conveying pipeline 312 penetrates through the fine filter screen plate 311; the sensor 313 is a water level sensor and is fixedly connected to the inner rear wall of the box body 11.

[0039] In the utility model, the primary filtered exhaust gas is conveyed to the lower side of the fine filter screen plate 311 through the conveying pipeline 312, and the fine filter screen plate 311 cooperates with the water at the right end of the baffle 211 to wet filter the exhaust gas; when the water level at the right end of the baffle 211 is lower than the sensor 313, the water storage tank adds water to the right end of the inner bottom of the box body 11 through the water inlet pipeline 14, so as to avoid the water level being lowered to the lower end of the conveying pipeline 312 and causing the device to lose the wet filtering effect.

[0040] The pollution discharging assembly comprises a driving motor 321, a rotating rod 322, a driving wheel 323, a driven wheel 324, a belt 325, a moving block 331, an expansion block 332, a spring 333, an arc block 334, an expansion plate 335, a spring 336, a driving block 337 and a pollution discharging tank 338. The rotating rod 322 is rotatably connected to the front and rear inner walls of the box body 11. The driving motor 321 is fixedly connected to the front end of the box body 11. The output end of the driving motor 321 is fixedly connected to the front end of the rotating rod 322. The driving wheel 323 is fixedly connected to the front and rear symmetrical side walls of the rotating rod 322. The driven wheel 324 is rotatably connected to the front and rear inner walls of the box body 11. The driving wheel 323 on the same side is in transmission connection with the driven wheel 324 on the same side through the belt 325. One end of the moving block 331 is fixedly connected to the belt 325. The other end of the moving block 331 is slidably connected to the expansion block 332. The moving block 331 is internally provided with a plurality of springs 333. One end of the spring 333 is fixedly connected to the inner end of the expansion block 332. The other end of the spring 333 is fixedly connected to the inner wall of the moving block 331. The arc block 334 is fixedly connected to the right end of the partition plate 211. The lower end of the arc block 334 is fixedly connected to the inner bottom of the box body 11. The right bottom of the box body 11 is provided with a limiting groove 339. The expansion plate 335 is limitingly and slidably connected to the limiting groove 339. The limiting groove 339 is internally provided with a plurality of springs 336. One end of the spring 336 is fixedly connected to the right end of the expansion plate 335. The other end of the spring 336 is fixedly connected to the right inner wall of the limiting groove 339. The driving block 337 is fixedly connected to the left side of the upper end of the expansion plate 335. The pollution discharging tank 338 is arranged on the lower side of the expansion plate 335. The upper end of the pollution discharging tank 338 is fixedly connected to the lower end of the box body 11. The pollution discharging pipeline 15 is fixedly connected to the lower end of the pollution discharging tank 338.

[0041] The dust deposited in the right end of the inner bottom of the box body 11 is moved to the right side by the expansion block 332 driving the dust deposited in the right end of the inner bottom of the box body 11, the expansion block 332 moves to the right and drives the expansion plate 335 to move to the right along the limiting groove 339 through the driving block 337, and the spring 336 is compressed, so that the dust deposited is discharged through the blowdown tank 338 and the blowdown pipeline 15, and the spring 333 and the spring 336 are reset when the outer end of the expansion block 332 is dislocated with the upper end of the driving block 337; the dust is discharged through the expansion block 332, the expansion plate 335 and the driving block 337, and the effect of the wet filtration is not affected by the excessive dust deposited in the right end of the inner bottom of the box body 11. The above embodiments are only used to illustrate the technical solutions of the utility model, and are not limited thereto; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. Exhaust gas collection and purification treatment apparatus comprising a tank (11), characterized in that, It also includes an ash collection box (16), a primary filter mechanism and a wet filter mechanism; The upper end left side of the box body (11) is fixedly connected with an air inlet pipeline (12); the air inlet pipeline (12) is connected with an air suction device through a pipeline; the upper end right side of the box body (11) is fixedly connected with an air outlet pipeline (13); the upper end of the box body (11) is fixedly connected with a water inlet pipeline (14); the lower side of the box body (11) is provided with a blowdown pipeline (15); the left end of the inner side of the box body (11) is connected with a primary filter mechanism for primary filtering of waste gas; the right end of the inner side of the box body (11) is connected with a wet filter mechanism for wet filtering of the primary filtered waste gas; the left side of the inner bottom of the box body (11) is slidably connected with an ash collection box (16), and the left end of the ash collection box (16) is fixedly connected with a handle (161); The primary filter mechanism includes a primary filter assembly and an online replacement assembly, and the primary filter assembly for primary filtering of waste gas is connected to the left side of the inner bottom of the box body (11); the online replacement assembly for online replacement of the ash collection box (16) is connected to the side wall of the inner side of the box body (11); and the online replacement assembly is connected to the lower side of the primary filter assembly; The primary filter assembly includes a partition plate (211), a primary filter screen plate (212), an inclined block one (213) and an inclined block two (214), the inner bottom of the box body (11) is fixedly connected with the partition plate (211) for separating the inside of the box body (11); the right end of the partition plate (211) is provided with water for wet filtering of waste gas; the side wall of the partition plate (211) is fixedly connected with a plurality of primary filter screen plates (212); the front and rear inner walls of the box body (11) are respectively fixedly connected with the front and rear ends of the inclined block one (213); and the inner bottom of the ash collection box (16) is fixedly connected with the inclined block two (214); The online replacement assembly includes a fixed plate (221), a moving plate (222), a magnetic block one (223) and a magnetic block two (224), the front and rear inner walls of the box body (11) are respectively fixedly connected with the front and rear ends of the fixed plate (221); a sliding groove is arranged between the fixed plate (221) and the inclined block one (213), the moving plate (222) is limitingly and slidably connected with the sliding groove; the lower end left side of the moving plate (222) is fixedly connected with the magnetic block one (223); and the upper end right side of the ash collection box (16) is fixedly connected with the magnetic block two (224).

2. The exhaust gas collection and purification apparatus according to claim 1, wherein The wet filter mechanism includes a wet filter assembly and a blowdown assembly, the wet filter assembly for wet filtering of waste gas is connected to the right end of the inner bottom of the box body (11), and the blowdown assembly for scraping off the sludge on the right end of the inner bottom of the box body (11) is connected to the right end of the inner bottom of the box body (11).

3. The exhaust gas collection and purification apparatus according to claim 2, wherein The wet filter assembly comprises a fine filter screen plate (311), a conveying pipe (312) and a sensor (313), the fine filter screen plate (311) is fixedly connected to the right end of the partition plate (211), and the side wall of the fine filter screen plate (311) is fixedly connected to the inner side wall of the box body (11); a plurality of conveying pipes (312) are arranged at the right end of the partition plate (211), and the conveying pipes (312) correspond to the primary filter screen plates (212) one by one; the air inlet end of the conveying pipe (312) is fixedly connected to the right end of the partition plate (211), and the air inlet end of the conveying pipe (312) is aligned with the primary filter screen plate (212); the air outlet end of the conveying pipe (312) penetrates through the fine filter screen plate (311); and the sensor (313) is fixedly connected to the inner wall of the rear side of the box body (11).

4. The exhaust gas collection and purification apparatus according to claim 3, wherein The sensor (313) is a water level sensor.

5. The exhaust gas collection and purification apparatus according to claim 4, wherein The pollution discharge assembly comprises a driving motor (321), a rotating rod (322), a driving wheel (323), a driven wheel (324), a belt (325) and a scraping assembly, the rotating rod (322) is rotatably connected to the front and rear inner walls of the box body (11); the driving motor (321) is fixedly connected to the front end of the box body (11), and the output end of the driving motor (321) is fixedly connected to the front end of the rotating rod (322); the side wall of the rotating rod (322) is fixedly connected with the driving wheels (323) which are symmetrically arranged on the front and rear sides; the driven wheels (324) are rotatably connected to the front and rear inner walls of the box body (11); the driving wheels (323) on the same side are in transmission connection with the driven wheels (324) on the same side through the belt (325); and the belt (325) is connected with the scraping assembly on the lower side.

6. The exhaust gas collection and purification apparatus according to claim 5, wherein The scraping assembly comprises a moving block (331), an extension block (332), a spring (333), an arc-shaped block (334), an extension plate (335), a spring (336), a driving block (337) and a pollution discharge tank (338), one end of the moving block (331) is fixedly connected with the belt (325); the other end of the moving block (331) is slidably connected with the extension block (332); a plurality of springs (333) are arranged on the inner side of the moving block (331); one end of the spring (333) is fixedly connected with the inner side end of the extension block (332), and the other end of the spring (333) is fixedly connected with the inner wall of the moving block (331); the arc-shaped block (334) is fixedly connected to the right end of the partition plate (211), and the lower end of the arc-shaped block (334) is fixedly connected to the inner bottom of the box body (11); a limiting groove (339) is arranged on the right side of the bottom of the box body (11); the extension plate (335) is limitingly and slidably connected with the limiting groove (339); a plurality of springs (336) are arranged on the inner side of the limiting groove (339); one end of the spring (336) is fixedly connected with the right end of the extension plate (335); the other end of the spring (336) is fixedly connected with the right inner wall of the limiting groove (339); the driving blocks (337) are fixedly connected to the upper end of the left side of the extension plate (335) and symmetrically arranged on the front and rear sides; the pollution discharge tank (338) is arranged on the lower side of the extension plate (335); the upper end of the pollution discharge tank (338) is fixedly connected with the lower end of the box body (11); and the pollution discharge pipe (15) is fixedly connected to the lower end of the pollution discharge tank (338).

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