Waste gas treatment device

Abstract

The utility model relates to the field of waste gas treatment, in particular to a waste gas treatment device. Comprising an outer shell, an inner shell, a center cylinder and a filtering assembly, the waste gas filtering effect is improved, and the arrangement of a waste gas path (stroke) and the filtering of waste gas are completed through the cooperation of the filtering assembly, the outer shell, the inner shell, the center cylinder and the filtering assembly; the first gap and the second gap are matched with the filtering assembly, so that the stroke distance of the waste gas is increased, large-particle preliminary filtering of the waste gas is facilitated, and then final filtering of the waste gas is completed through the filtering assembly.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment, in particular to a waste gas treatment device. Background Art

[0002] Common waste gas treatments include workshop dust waste gas purification, organic waste gas purification, etc. Among them, when filtering waste gas with large dust, how to directly pre-treat the larger particles of impurities and use the gravity of the particles themselves to make them initially separated from the waste gas is often related to the later waste gas treatment effect. Summary of the invention

[0003] In order to solve the problems of the prior art, the utility model provides an exhaust gas treatment device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An exhaust gas treatment device, comprising:

[0006] shell;

[0007] The inner shell is fixedly arranged in the outer shell, a gap is formed between the inner shell and the outer shell, and the center line of the outer shell coincides with the center line of the inner shell;

[0008] The center tube is located in the inner shell, with a gap 2 between the center tube and the inner shell, and the center line of the center tube coincides with the center line of the inner shell;

[0009] The filter assembly is arranged in the central cylinder, and the filter assembly is filled with filter cotton;

[0010] The filter components include:

[0011] frame;

[0012] A clamping member is arranged in the frame;

[0013] The filter cotton is fixed in the frame by means of a clamping piece;

[0014] The card holder includes:

[0015] A seat plate, fixed to the inner side of the frame;

[0016] The first limit block is fixed to one side of the seat plate, and the first limit block protrudes from the upper end surface of the seat plate;

[0017] The second limit block is fixed to the other side of the seat plate, and the second limit block protrudes from the upper end surface of the seat plate;

[0018] The first limiting column is arranged on the upper part of the seat plate, and the first limiting column protrudes toward the inner side of the frame.

[0019] The limiting column 2 is fixed on the upper part of the limiting column 1, one end of the limiting column 2 is fixed to the inner wall of the circular plate 1, and the other end of the limiting column 2 is fixed to the inner wall of the circular plate 2.

[0020] The cross section of the shell is a regular hexagonal structure, the shell is a hollow structure, and its two sides are open, and the side wall of the shell is penetrated to open an external opening;

[0021] The cross section of the inner shell is a regular hexagonal structure, the inner shell is a hollow structure, and its two sides are open.

[0022] The outer openings include: outer opening 1, outer opening 2 and outer opening 3, and outer opening 1, outer opening 2 and outer opening 3 are arranged at intervals.

[0023] The inner shell side wall is penetrated to form an inner opening, and the inner opening and the outer opening are staggered.

[0024] The inner openings include: inner opening one, inner opening two and inner opening three. The inner opening one, inner opening two and inner opening three are arranged at intervals; the inner opening one is staggered with the outer opening one, the inner opening two is staggered with the outer opening two, and the inner opening three is staggered with the outer opening three.

[0025] The outer shell and the inner shell are fixedly connected via baffles, and there are three baffles which are evenly spaced and distributed between the outer shell and the inner shell.

[0026] A limiting plate evenly fixed on the inner wall of the inner shell;

[0027] The limit plate includes:

[0028] A support plate, one side of which is fixedly connected to the inner wall of the inner shell, and the support plate extends from the upper end of the inner shell to the lower end of the inner shell;

[0029] The arc-shaped plate is fixedly connected to the support plate, has a "︵"-shaped cross section, and has a concave surface facing inwards. The arc-shaped plate extends from the upper end to the lower end of the support plate.

[0030] The central tube comprises:

[0031] The cylinder is a hollow cylindrical structure with two sides open;

[0032] A window is provided through the side wall of the cylinder;

[0033] The slot is an arc-shaped groove structure, which is opened on the end surface of the cylinder, and the slot is connected with the window;

[0034] The first plug plate is an arc-shaped plate structure, and a plug plate hole is provided on the front side thereof;

[0035] The second plug plate is an arc-shaped plate structure, and a second plug plate hole is provided on the rear side thereof;

[0036] Insert plate three is an arc-shaped plate structure.

[0037] The framework includes:

[0038] Round plate one;

[0039] The second circular plate is spaced apart from the first circular plate;

[0040] A connecting rod is fixed between the first circular plate and the second circular plate;

[0041] A rear sealing plate is fixed between the rear end of the inner shell and the rear end of the central tube;

[0042] A sealing ring is fixed between the rear end of the outer shell and the rear end of the inner shell.

[0043] The front sealing plate is fixed at the front end of the outer shell, the front end of the inner shell and the front end of the central tube.

[0044] Compared with the prior art, the beneficial effects of the utility model are: improving the filtering effect of exhaust gas, completing the setting of the exhaust gas path (stroke) and the filtering of exhaust gas through the coordinated cooperation of the filter component with the outer shell, the inner shell and the center tube as well as the filter component, increasing the travel distance of the exhaust gas through the gap one and the gap two in cooperation with the filter component, which is beneficial to the preliminary filtering of large particles in the exhaust gas, and then completing the final filtration of the exhaust gas through the filter component. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0046] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 .

[0047] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 .

[0048] Figure 3 This is a schematic diagram of the shell structure in the utility model Figure 1 .

[0049] Figure 4 It is a schematic diagram of the inner shell structure in the utility model.

[0050] Figure 5 It is a schematic diagram of the matching structure of the inner shell and the outer shell in the utility model.

[0051] Figure 6 It is a schematic diagram of the cylinder structure of the utility model.

[0052] Figure 7 yes Figure 6 Schematic diagram of the structure at point A in the middle.

[0053] Figure 8 This is a schematic diagram of the new internal structure of the utility model Figure 1 .

[0054] Fig. 9 This is a schematic diagram of the new internal structure of the utility model Figure 2 .

[0055] Fig.10 It is a schematic diagram of the structure of the filter assembly in the utility model.

[0056] Fig.11 This is a schematic diagram of the frame structure in the utility model Figure 1 .

[0057] Fig.12 This is a schematic diagram of the frame structure in the utility model Figure 2 .

[0058] Fig.13 It is a schematic diagram of the filter cotton structure in the utility model.

[0059] Fig.14 This is a schematic diagram of the three-dimensional structure of the utility model Figure 3 .

[0060] Fig.15 It is a schematic diagram of the sealing ring structure in the utility model.

[0061] Fig.16 This is a schematic diagram of the three-dimensional structure of the shell in the utility model Figure 2 .

[0062] Among them: 100, outer shell; 1001, gap one; 110, bracket; 111, front leg; 112, rear leg; 121, outer opening one; 122, outer opening two; 123, outer opening three; 1211, outer opening tube one; 1221, outer opening tube two; 1231, outer opening tube three; 130, baffle; 131, baffle one; 132, baffle two; 133, baffle three; 200, inner shell; 2001, gap two; 210, inner opening one; 220, inner opening two; 230, inner opening three; 240, limit plate; 241, support plate; 242, arc plate; 300, Central tube; 310, cylinder; 320, window; 330, slot; 340, plug plate one; 341, plug plate hole one; 350, plug plate two; 351, plug plate hole two; 360, plug plate three; 400, filter assembly; 410, frame; 411, round plate one; 4111, shaft; 412, round plate two; 413, connecting rod; 420, positioning piece; 421, seat plate; 422, limit block one; 423, limit block two; 424, limit column one; 425, limit column two; 430, filter cotton; 500, rear sealing plate; 600, sealing ring; 700, front sealing plate. DETAILED DESCRIPTION

[0063] The present invention is further described in detail below through embodiments. The embodiments are only used to illustrate the present invention and do not limit the scope of the present invention.

[0064] An exhaust gas treatment device, comprising:

[0065] The housing 100 is a hollow structure and is tilted relative to the ground A. The height of the front end of the housing 100 is greater than the height of the rear end.

[0066] The inner shell 200 is fixedly arranged in the outer shell 100, and there is a gap 1001 between the inner shell 200 and the outer shell 100, and the center line of the outer shell 100 coincides with the center line of the inner shell 200; the exhaust gas enters from the outer shell 100 into the gap 1001 between the inner shell 200 and the outer shell 100, so that the exhaust gas is pre-treated through the gap 1001, and impurities such as larger particles entrained in the exhaust gas can be precipitated and separated in the gap 1001 in time.

[0067] The central tube 300 is located in the inner shell 200. There is a gap 2001 between the central tube 300 and the inner shell 200. The center line of the central tube 300 coincides with the center line of the inner shell 200. The gap 2001 cooperates with the gap 1 1001 to further pre-treat the exhaust gas, so that the impurities such as particles in the exhaust gas are further precipitated and separated after passing through the gap 1 1001 and entering the gap 2001. Of course, the gap 1 1001 and the gap 2 2001 can also be filled with filter materials (filter cotton, etc.), which are no longer shown in the figure.

[0068] The filter assembly 400 is rotatably disposed in the central tube 300 . The filter cotton 430 is filled in the filter assembly 400 . The exhaust gas enters the filter assembly 400 in the central tube 300 through the outer shell 100 and the inner shell 200 . The waste gas is filtered through the filter component 400, which mainly contains filter cotton 430. Particles and other substances entrained in the waste gas are adsorbed and processed by the filter cotton 430; the waste gas to be processed enters into the gap 1001 through one side of the outer shell 100, and then enters into the inner shell 200 through one side of the gap 1001 and enters into one side of the gap 2001, and then contacts the filter component 400 located in the central tube 300, and moves to the other side of the gap 2001 through the other side of the gap 1 1001, and finally is discharged from the other side of the outer shell 100; at the same time, after being used for a period of time, the filter component 400 is rotated to change the position of the filter component 400 relative to the central tube 300, so that different parts of the filter cotton 430 in the filter component 400 can contact with the waste gas, thereby maximizing the filtering effect of the filter cotton in the filter component 400.

[0069] Preferably, a bracket 110 is fixedly arranged on the ground A, and the bracket 110 comprises: a front leg 111, fixed to the front part of the ground A;

[0070] The rear leg 112 is fixed to the rear of the ground A; the upper end surface of the front leg 111 is located above the upper end surface of the rear leg 112, and the lower part of the housing 100 is fixedly connected to the upper parts of the front leg 111 and the rear leg 112;

[0071] When the bottom of the shell 100 is fixed on the bracket 110, the shell 100 is inclined with the front higher and the back lower. The inclined setting of the shell 100 facilitates the exhaust gas entering the shell 100 to "gather" on the rear side of the shell 100 after the particulate impurities entrained therein are precipitated, thereby facilitating unified recovery at a later stage.

[0072] The cross-section of the outer shell 100 is a regular hexagonal structure. The outer shell 100 is a hollow structure with openings on both sides. The side wall of the outer shell 100 is penetrated to form external openings. There are three external openings, which can be used as both the inlet and outlet of the exhaust gas. The external openings can be selected according to the situation. Two of the three external openings are selected as the inlet and outlet of the exhaust gas respectively, and the other one is in an idle or blocked state.

[0073] See also Figure 3 The outer opening includes: an outer opening 121, an outer opening 2 122 and an outer opening 3 123, and the outer opening 121, the outer opening 2 122 and the outer opening 3 123 are arranged at intervals; preferably, the outer side of the outer opening 121 matches the fixed outer opening tube 1 1211, the outer side of the outer opening 2 122 matches the fixed outer opening tube 2 1221, and the outer side of the outer opening 3 123 matches the fixed outer opening tube 3 1231;

[0074] The cross-section of the inner shell 200 is a regular hexagonal structure. The inner shell 200 is a hollow structure with openings on both sides. The inner shell 200 has an inner opening through its side wall. The inner opening and the outer opening are staggered. When the exhaust gas enters from the outer opening, it passes through the gap 1001 for preliminary precipitation and then enters the gap 2 2001 through the inner opening. Because the inner opening and the outer opening are staggered, the movement distance of the exhaust gas in the gap 1001 is increased, thereby improving the pretreatment effect of the exhaust gas.

[0075] like Figure 4 , 5 The inner openings include: inner opening 1 210, inner opening 220 and inner opening 3 230, which are arranged at intervals; inner opening 1 210 and outer opening 1 121 are arranged in a staggered manner, inner opening 220 and outer opening 2 122 are arranged in a staggered manner, and inner opening 3 230 and outer opening 3 123 are arranged in a staggered manner. The staggered arrangement can increase the "travel" of the exhaust gas in the gap 1001, thereby facilitating the exhaust gas to sink to the bottom in the gap 1001.

[0076] The outer shell 100 and the inner shell 200 are fixedly connected by a baffle 130; the baffle 130 is a rectangular plate structure, and there are three baffles 130 that are evenly spaced between the outer shell 100 and the inner shell 200; the baffle 130 divides the gap 1 1001 into three equally divided spaces, and the exhaust gas enters the gap 2 2001 through the space.

[0077] The baffle plate 130 includes:

[0078] A baffle plate 131 is fixed between the outer shell 100 and the inner shell 200, and the baffle plate 131 is close to the inner opening 210;

[0079] The second baffle plate 132 is fixed between the outer shell 100 and the inner shell 200, and the second baffle plate 132 is close to the second inner opening 220;

[0080] The baffle plate 3 133 is fixed between the outer shell 100 and the inner shell 200, and the baffle plate 3 133 is close to the inner opening 3 230;

[0081] The inner wall of the inner shell 200 is evenly fixed with a limiting plate 240 ( Figure 4 ), the number of the limiting plates 240 is three and they are evenly distributed in the inner shell 200;

[0082] The limiting plate 240 includes:

[0083] A support plate 241, one side of which is fixedly connected to the inner wall of the inner shell 200, and the support plate 241 extends from the upper end of the inner shell 200 to the lower end of the inner shell 200;

[0084] The arc plate 242 is fixedly connected to the support plate 241. The cross section of the arc plate 242 is in a "︵" shape, with the concave surface facing inward. The arc plate 242 extends from the upper end to the lower end of the support plate 241. The arc plate 242 is used to support and fix the central tube 300 later.

[0085] See also Figure 6 , 7 , the central tube 300 includes:

[0086] The cylinder 310 is a hollow cylindrical structure with openings on both sides; the filter assembly 400 is disposed inside the cylinder 310 .

[0087] A window 320 is formed on the side wall of the cylinder 310 , and there are three windows 320 evenly distributed on the cylinder 310 ;

[0088] The slot 330 is an arc-shaped groove structure, which is opened on the end surface of the cylinder 310. There are three slots 330, and the slots 330 are connected to the window 320;

[0089] See also Figure 8 , 9The plug plate 340 is an arc-shaped plate structure, and a plug plate hole 341 is provided on the front side thereof, and can be inserted from the first slot 330 into the window 320 when in use;

[0090] The second plug board 350 is an arc-shaped plate structure, and a second plug board hole 351 is provided on the rear side thereof. When in use, the second plug board 350 can be inserted into the window 320 from the second slot 330;

[0091] Insert plate three 360 ​​is an arc-shaped plate structure, which can be inserted into the window 320 from the third slot 330 when in use; by inserting insert plate one 340, insert plate two 350 and insert plate three 360 ​​into the slot 330 at the same time, the cylinder 310 can be "blocked" to a certain extent, thereby changing the position of the filter component 400 inside the cylinder 310 where the exhaust gas enters and exits, which can increase the travel of the exhaust gas and facilitate the filter component 400 to filter the exhaust gas.

[0092] See also Figure 10-13 , the filter assembly 400 comprises:

[0093] Frame 410;

[0094] The locking member 420 is disposed in the frame 410 ; the locking member 420 is used to shape and lock the filter cotton.

[0095] There are two of them and they are symmetrically arranged in the frame 410 . Specifically, the two positioning members 420 are symmetrically arranged up and down.

[0096] The filter cotton 430 is fixed in the frame 410 by the locking member 420; there are two filter cottons 430, and the two filter cottons 430 are fixed in the frame 410 under the limiting action of the locking member 420. At the same time, the two filter cottons 430 form a cylindrical structure, and enter from the gap two 2001 (part) through the plug hole (plug hole one 341 or plug hole two 351) and then enter from one side of the filter cotton 430, and then be discharged from the side of the filter cotton 430 and re-enter the gap two 2001 (the other part) through the plug hole (plug hole one 341 or plug hole two 351) and then be discharged outward through the gap one 1001.

[0097] Framework 410 includes:

[0098] The circular plate 1 411 is a circular plate-shaped structure, and its diameter is slightly smaller than the diameter of the cylinder 310;

[0099] The second circular plate 412 is a circular plate-shaped structure, and its diameter is slightly smaller than the diameter of the cylinder 310. The second circular plate 412 is spaced apart from the first circular plate 411. Preferably, a shaft 4111 is disposed outside the first circular plate 411. The shaft 4111 protrudes from the front end surfaces of the outer shell 100 and the inner shell 200.

[0100] The connecting rod 413 is fixed between the circular plate 1 411 and the circular plate 2 412; the filter cotton 430 forms an "integral structure" with the frame 410 under the action of the locking member 420. At this time, the filter cotton 430 and the frame 410 are "inserted" into the central tube 300 as a whole. When necessary, the frame 410 and the filter cotton 430 can be rotated relative to the central tube 300, so that different positions of the filter cotton 430 can contact the exhaust gas, thereby improving the use efficiency of the filter cotton 430.

[0101] The positioning member 420 includes:

[0102] The seat plate 421 is a plate-shaped structure, which is fixed to the inner side of the frame 410. There are two seat plates 421, one side of which is fixedly connected to the inner side wall of the circular plate 1 411, and the other side of which is fixedly connected to the inner side wall of the circular plate 2 412;

[0103] The limiting block 422 is fixed to one side of the seat plate 421, and the limiting block 422 protrudes from the upper end surface of the seat plate 421;

[0104] The second limiting block 423 is fixed to the other side of the seat plate 421, and the second limiting block 423 protrudes from the upper end surface of the seat plate 421;

[0105] The limiting column 1 424 is disposed on the upper part of the seat plate 421. The limiting column 1 424 protrudes toward the inner side of the frame 410. There are two limiting columns 1 424, which are respectively fixed to the inner wall of the circular plate 1 411 and the inner wall of the circular plate 2 412.

[0106] The limiting column 425 is fixed on the upper part of the limiting column 424, one end of the limiting column 425 is fixed to the inner wall of the circular plate 411, and the other end of the limiting column 425 is fixed to the inner wall of the circular plate 412; when in use, the filter cotton 430 "bends" through the gap between the limiting column 424 and the limiting column 425, and at the same time, the bottom of the filter cotton 430 is located on the seat plate 421 and the bottom of the filter cotton 430 is limited by the limiting block 1 422 and the limiting block 2 423 to realize the fixation of the filter cotton 430 in the frame 410.

[0107] A rear sealing plate 500 is fixed between the rear end of the inner shell 200 and the rear end of the central tube 300. The rear sealing plate 500 is used to seal the rear end of the central tube 300 and the rear end of the gap 2001 to prevent the exhaust gas from overflowing.

[0108] A sealing ring 600 is fixed between the rear end of the outer shell 100 and the rear end of the inner shell 200, and the sealing ring 600 is nested and fixedly connected with the rear sealing plate 500; the sealing ring 600 and the rear sealing plate 500 are detachable, which makes it easy to clean the dust (more) accumulated in the gap 1001 at a later time.

[0109] A front sealing plate 700 is fixed to the front end of the outer shell 100, the front end of the inner shell 200 and the front end of the central tube 300. The front sealing plate 700 prevents the exhaust gas from overflowing from the gap 1 1001, the gap 2 2001 and the front side of the central tube 300.

[0110] The shaft 4111 passes through the front sealing plate 700 and protrudes forward; thus, the filter assembly 400 can be directly controlled to rotate relative to the cylinder 310 by rotating the shaft 4111.

[0111] How it works: See Figure 8 , the outer mouth tube 1211 is selected as the exhaust gas inlet, and the outer mouth tube 2 1221 is selected as the treated exhaust gas outlet. The exhaust gas passes through the outer mouth tube 1211 and then enters the gap 2 2001 (part) through the gap 1 1001 (part). During this period, larger particles of impurities are precipitated in the gap 1 1001 (main) and the gap 2 2001. Then the exhaust gas passes through the plug plate hole 2 351 (rear side) of the plug plate 2 350 and enters the filter cotton 430 of the filter assembly 400. The exhaust gas filtered by the filter cotton 430 passes through the plug plate hole 1 341 (front side) of the plug plate 1 340 and enters the gap 2 2001 (another part) and the gap 1 1001 (another part) and then is discharged outward from the outer mouth tube 2 1221.

Claims

1. An exhaust gas treatment device, characterized in that: include: Housing (100); The inner shell (200) is fixedly disposed in the outer shell (100), a gap (1001) is provided between the inner shell (200) and the outer shell (100), and the center line of the outer shell (100) coincides with the center line of the inner shell (200); The central tube (300) is located inside the inner shell (200), a gap 2 (2001) is provided between the central tube (300) and the inner shell (200), and a center line of the central tube (300) coincides with a center line of the inner shell (200); A filter assembly (400) is disposed in the central tube (300), and filter cotton (430) is filled in the filter assembly (400); The filter assembly (400) comprises: Frame(410); A locking member (420) is disposed in the frame (410); The filter cotton (430) is fixed in the frame (410) through the locking member (420); The positioning member (420) comprises: A seat plate (421) is fixed to the inner side of the frame (410); A limit block 1 (422) is fixed to one side of the seat plate (421), and the limit block 1 (422) protrudes from the upper end surface of the seat plate (421); The second limiting block (423) is fixed to the other side of the seat plate (421), and the second limiting block (423) protrudes from the upper end surface of the seat plate (421); The first limiting column (424) is arranged on the upper part of the seat plate (421), and the first limiting column (424) protrudes toward the inner side of the frame (410). The second limiting column (425) is fixed on the upper part of the first limiting column (424), one end of the second limiting column (425) is fixed to the inner wall of the first circular plate (411), and the other end of the second limiting column (425) is fixed to the inner wall of the second circular plate (412).

2. The exhaust gas treatment device according to claim 1, characterized in that: The cross section of the shell (100) is a regular hexagonal structure, the shell (100) is a hollow structure, and its two sides are open, and the side wall of the shell (100) is penetrated to form an external opening; The cross section of the inner shell (200) is a regular hexagonal structure. The inner shell (200) is a hollow structure with two sides being open.

3. The exhaust gas treatment device according to claim 2, characterized in that: The outer opening includes: outer opening one (121), outer opening two (122) and outer opening three (123), and the outer opening one (121), outer opening two (122) and outer opening three (123) are arranged at intervals.

4. The exhaust gas treatment device according to claim 3, characterized in that: The side wall of the inner shell (200) is penetrated to form an inner opening, and the inner opening and the outer opening are staggered. The inner opening comprises: inner opening one (210), inner opening two (220) and inner opening three (230), wherein the inner opening one (210), inner opening two (220) and inner opening three (230) are arranged at intervals; the inner opening one (210) and outer opening one (121) are arranged in a staggered manner, the inner opening two (220) and outer opening two (122) are arranged in a staggered manner, and the inner opening three (230) and outer opening three (123) are arranged in a staggered manner.

5. The exhaust gas treatment device according to claim 4, characterized in that: The outer shell (100) and the inner shell (200) are fixedly connected via baffles (130), and there are three baffles (130) which are evenly spaced and distributed between the outer shell (100) and the inner shell (200).

6. The exhaust gas treatment device according to claim 5, characterized in that: A limiting plate (240) evenly fixed on the inner wall of the inner shell (200); The limiting plate (240) comprises: A support plate (241), one side of which is fixedly connected to the inner wall of the inner shell (200), and the support plate (241) extends from the upper end of the inner shell (200) to the lower end of the inner shell (200); The arc-shaped plate (242) is fixedly connected to the support plate (241) and has a "︵"-shaped cross section with a concave surface facing inwards. The arc-shaped plate (242) extends from the upper end to the lower end of the support plate (241).

7. The exhaust gas treatment device according to claim 6, characterized in that: The central tube (300) comprises: The cylinder (310) is a hollow cylindrical structure with two sides being open; A window (320) is formed through the side wall of the cylinder (310); The slot (330) is an arc-shaped groove structure, which is opened on the end surface of the cylinder (310), and the slot (330) is connected with the window (320); The first plugging plate (340) is an arc-shaped plate (242) structure, and a first plugging plate hole (341) is provided on the front side thereof; The second plugging plate (350) is an arc-shaped plate (242) structure, and a second plugging plate hole (351) is provided on the rear side thereof; The plug plate three (360) is an arc-shaped plate (242) structure.

8. The exhaust gas treatment device according to claim 7, characterized in that: The framework (410) comprises: Circular plate 1 (411); The second circular plate (412) is spaced apart from the first circular plate (411); The connecting rod (413) is fixed between the circular plate 1 (411) and the circular plate 2 (412).

9. The exhaust gas treatment device according to claim 8, characterized in that: A rear sealing plate (500) is fixed between the rear end of the inner shell (200) and the rear end of the central tube (300); A sealing ring (600) is fixed between the rear end of the outer shell (100) and the rear end of the inner shell (200).

10. The exhaust gas treatment device according to claim 9, characterized in that: The front end of the outer shell (100), the front end of the inner shell (200) and the front end of the central tube (300) are fixed with a front sealing plate (700).

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