Tail gas treatment silencing device

Abstract

The utility model belongs to the technical field of tail gas treatment, and particularly relates to a tail gas treatment silencing device which comprises an arc-shaped supporting plate, an outer barrel and an inner barrel. The inner wall of the outer cylinder body is fixedly connected with a connecting inserting block, the inner wall of the outer cylinder body is fixedly connected with the outer side of the inner cylinder body through the connecting inserting block, a heat insulation cavity is formed between the inner wall of the outer cylinder body and the outer side of the inner cylinder body, and the heat insulation cavity is filled with first heat insulation cotton and second heat insulation cotton; the surface of the outer cylinder body is communicated with an air inlet pipe, and the inner wall of the inner cylinder body is fixedly connected with a separation disc; by arranging the first cavity and the second cavity, secondary expansion can be carried out, so that high-frequency noise can be eliminated after medium-low-frequency noise is eliminated, noise can be eliminated as much as possible, in addition, the heat insulation cavity is further arranged, first heat insulation cotton and second heat insulation cotton are filled in the heat insulation cavity, and a certain heat insulation function is achieved during noise reduction. And the silencing effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of exhaust gas treatment technology, specifically an exhaust gas treatment silencer. Background Technology

[0002] Exhaust gas treatment is a key step in reducing air pollution. Targeted technologies are needed to achieve efficient purification of exhaust gases from different sources, such as vehicle exhaust and industrial waste gas. For vehicle exhaust treatment, it is also necessary to use a muffler.

[0003] Chinese patent CN205075641U discloses a muffler mounting device, comprising: a muffler bracket supporting the muffler, and a fixing component for fixing the muffler and connecting it to the muffler bracket; the muffler bracket consists of: a concave plate supporting the muffler; the concave plate is provided with drainage holes. This utility model provides a muffler security device with a special concave plate shape; the drainage holes on the concave plate facilitate the outflow of sewage, thereby preventing corrosion of the muffler and bracket, and increasing the product's service life.

[0004] As mentioned above, the patent provides a muffler placement device that facilitates the outflow of sewage, thereby preventing corrosion of the muffler and support and increasing the product's service life. However, when silencing, only one silencing chamber is designed, and the expansion range is limited, which means that the silencing effect still needs to be improved.

[0005] Therefore, a tail gas treatment and noise reduction device is proposed to address the above problems. Utility Model Content

[0006] To overcome the shortcomings of existing technologies and address the problem that the limited expansion of a single silencing cavity during silencing results in a lower silencing effect, a new exhaust gas treatment silencing device is proposed.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The exhaust gas treatment and silencing device of this utility model includes an arc-shaped support plate, an outer cylinder and an inner cylinder; a connecting block is fixedly connected to the inner wall of the outer cylinder, and the inner wall of the outer cylinder is fixedly connected to the outer side of the inner cylinder through the connecting block. A heat insulation cavity is formed between the inner wall of the outer cylinder and the outer side of the inner cylinder. The heat insulation cavity is filled with a first heat insulation cotton and a second heat insulation cotton. An air inlet pipe is connected to the surface of the outer cylinder. A partition plate is fixedly connected to the inner wall of the inner cylinder. A first cavity and a second cavity are formed on both sides of the partition plate and inside the inner cylinder. A fine air guide tube is connected to the bottom of the partition plate and inside the second cavity. An exhaust pipe is connected to the top of the partition plate. Multiple circumferentially distributed air vents are opened on one side of the inner wall of the first cavity inside the inner cylinder.

[0008] Preferably, one end of the air inlet pipe passes through the outer cylinder and the inner cylinder in sequence and extends into the interior of the inner cylinder, and one end of the exhaust pipe passes through the partition plate, the inner cylinder and the outer cylinder in sequence and extends to one side of the outer cylinder.

[0009] Preferably, the portion of the air inlet pipe located in the first cavity and the heat insulation cavity has a silencer and exhaust port. Sealing and positioning plates are fixedly connected to the surface of the air inlet pipe at positions located on the outer side of the outer cylinder and the inner side of the inner cylinder. An external flange is fixedly connected to one end of the air inlet pipe located on the outer side of the outer cylinder.

[0010] Preferably, a support frame is fixedly connected to the bottom of the arc-shaped support plate, and reinforcing ribs are fixedly connected to both sides of the support frame.

[0011] Preferably, an electric telescopic rod is fixedly connected to the center of the partition plate on one side of the second cavity, and a piston disc is fixedly connected to one end of the electric telescopic rod.

[0012] Preferably, the surface of the piston disc is slidably connected to the inner wall of the inner cylinder, and four circumferentially arranged limiting slide rods are fixedly connected between one side of the partition disc and one side of the inner wall of the inner cylinder, and the interior of the piston disc is slidably connected to the surface of the limiting slide rods.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a tail gas treatment silencing device. By setting a first cavity and a second cavity, it can perform secondary expansion, thereby eliminating high-frequency noise after eliminating low- and medium-frequency noise, and eliminating as much noise as possible. In addition, a heat insulation cavity is set, which is filled with a first heat insulation cotton and a second heat insulation cotton, so that it has a certain heat insulation function while silencing, thus improving the silencing effect.

[0015] This utility model provides a tail gas treatment silencer. By setting an electric telescopic rod and a piston disc, the internal air pressure can be changed, thereby drawing the flue gas inside the first chamber into the second chamber. It can have a certain flue gas guiding effect, thereby drawing out more flue gas entering the heat insulation chamber and discharging more tail gas. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a three-dimensional view of the cross-sectional structure of the outer cylinder and the inner cylinder in this utility model;

[0019] Figure 3 This is a cross-sectional view of the internal structure of the second cavity in this utility model;

[0020] Figure 4 This is a perspective view of the partition plate connection structure of this utility model;

[0021] Figure 5 This is a perspective view of the first and second heat insulation cotton in this utility model;

[0022] Legend:

[0023] 1. Arc-shaped support plate; 2. Outer cylinder; 3. Inner cylinder; 4. Connecting plug; 5. Insulation cavity; 6. First insulation cotton; 7. Second insulation cotton; 8. Air inlet pipe; 9. Partition plate; 10. First cavity; 11. Second cavity; 12. Air guide tube; 13. Exhaust pipe; 14. Sealing positioning plate; 15. Support frame; 16. Reinforcing rib; 17. Electric telescopic rod; 18. Piston disc; 19. Limiting slide rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Please see Figures 1-5This utility model provides an exhaust gas treatment silencer, including an arc-shaped support plate 1, an outer cylinder 2, and an inner cylinder 3; a connecting block 4 is fixedly connected to the inner wall of the outer cylinder 2, and the inner wall of the outer cylinder 2 is fixedly connected to the outer side of the inner cylinder 3 through the connecting block 4; a heat insulation cavity 5 is formed between the inner wall of the outer cylinder 2 and the outer side of the inner cylinder 3; the heat insulation cavity 5 is filled with a first heat insulation cotton 6 and a second heat insulation cotton 7; an air inlet pipe 8 is connected to the surface of the outer cylinder 2; and a connecting block 4 is fixedly connected to the inner wall of the inner cylinder 3. A partition 9 is formed on both sides of the partition 9 and inside the inner cylinder 3, creating a first cavity 10 and a second cavity 11. A venting tube 12 connects to the bottom of the partition 9 and inside the second cavity 11, while an exhaust pipe 13 connects to the top of the partition 9. Multiple circumferentially distributed vent holes are formed inside the inner cylinder 3 and on one side of the inner wall of the first cavity 10. During operation, the outer cylinder 2, inner cylinder 3, and connecting block 4 form a complete cylinder, with a gap between the surfaces of the outer cylinder 2 and the inner cylinder 3. The heat insulation cavity 5 is formed, which facilitates the filling of the first heat insulation cotton 6 and the second heat insulation cotton 7. The air inlet pipe 8 is set in the first cavity 10. The air inlet pipe 8 guides the exhaust gas into the first cavity 10 inside the inner cylinder 3. The exhaust gas expands in the first cavity 10, eliminating some of the low- and mid-frequency noise. Then, the exhaust gas enters the second cavity 11 through the air guide thin pipe 12 at the bottom of the baffle 9. The exhaust gas expands in the second cavity 11, eliminating some of the high-frequency noise. Finally, it is discharged from the exhaust pipe 13. In this process, the vent hole facilitates the flow of exhaust gas into the heat insulation cavity 5. The first heat insulation cotton 6 and the second heat insulation cotton 7 complete the heat insulation effect. The overall structure of the first cavity 10 and the second cavity 11 allows for secondary expansion, thereby eliminating high-frequency noise after eliminating low- and mid-frequency noise, and eliminating as much noise as possible. In addition, the heat insulation cavity 5 is set up and filled with the first heat insulation cotton 6 and the second heat insulation cotton 7, so that it has a certain heat insulation function while silencing, which improves the silencing effect.

[0027] Furthermore, such as Figure 1 , Figure 2 and Figure 4As shown, one end of the air inlet pipe 8 passes through the outer cylinder 2 and the inner cylinder 3 in sequence and extends into the interior of the inner cylinder 3. One end of the exhaust pipe 13 passes through the partition plate 9, the inner cylinder 3 and the outer cylinder 2 in sequence and extends to one side of the outer cylinder 2. The portion of the air inlet pipe 8 located in the first cavity 10 and the heat insulation cavity 5 is provided with a silencer exhaust hole. Sealing positioning plates 14 are fixedly connected to the surface of the air inlet pipe 8 at the positions located on the outer side of the outer cylinder 2 and the inner side of the inner cylinder 3. An external flange is fixedly connected to the end of the air inlet pipe 8 located on the outer side of the outer cylinder 2. A support frame 15 is fixedly connected to the bottom of the arc-shaped support plate 1, and reinforcing ribs 16 are fixedly connected to both sides of the support frame 15. During operation, the air inlet pipe 8 extends through the inner cylinder 3 and is located inside the first cavity 10. At the same time, the air inlet pipe 8 has a silencer exhaust hole at the position of the first cavity 10 and the heat insulation cavity 5, so that when the silencer expansion is carried out, some of the flue gas can be discharged into the heat insulation cavity 5 for heat insulation. The sealing positioning plate 14 ensures the stability of the air inlet pipe 8 installed on the outer cylinder 2 and the inner cylinder 3. The support frame 15 supports the arc-shaped support plate 1, and the reinforcing rib 16 facilitates the installation of the silencer.

[0028] Furthermore, such as Figure 3 and Figure 4 As shown, an electric telescopic rod 17 is fixedly connected to the center of the partition 9 on one side of the second cavity 11. One end of the electric telescopic rod 17 is fixedly connected to a piston disc 18. The surface of the piston disc 18 is slidably connected to the inner wall of the inner cylinder 3. Four circumferentially arranged limiting slide rods 19 are fixedly connected between one side of the partition 9 and one side of the inner wall of the inner cylinder 3. The inside of the piston disc 18 is slidably connected to the surface of the limiting slide rods 19. During operation, the electric telescopic rod 17 drives the piston disc 18 to slide, thereby achieving the function of air intake. The limiting slide rods 19 limit the piston disc 18, allowing it to slide along the limiting slide rods 19. By setting the electric telescopic rod 17 and the piston disc 18, the internal air pressure can be changed, thereby drawing the flue gas inside the first cavity 10 into the second cavity 11. This provides a certain flue gas guiding function, allowing more flue gas to be extracted from the heat insulation cavity 5, and thus more exhaust gas to be discharged.

[0029] First, the outer cylinder 2, inner cylinder 3, and connecting block 4 form a complete cylinder. A heat insulation cavity 5 is formed between the surfaces of the outer cylinder 2 and inner cylinder 3, facilitating the filling of the first heat insulation cotton 6 and the second heat insulation cotton 7. An air inlet pipe 8 is located within the first cavity 10, guiding exhaust gas into the first cavity 10 within the inner cylinder 3. Expansion occurs within the first cavity 10, eliminating some low-to-mid-frequency noise. Subsequently, the flue gas enters the second cavity 11 through the air guide tube 12 at the bottom of the baffle 9, where it expands again, eliminating some high-frequency noise. Frequency noise is finally discharged from the exhaust pipe 13. The ventilation holes facilitate the flow of flue gas into the heat insulation cavity 5. The first heat insulation cotton 6 and the second heat insulation cotton 7 are used to achieve the heat insulation effect. The whole structure, by setting the first cavity 10 and the second cavity 11, can perform secondary expansion, thereby eliminating high-frequency noise after eliminating low- and medium-frequency noise, and eliminating as much noise as possible. In addition, the heat insulation cavity 5 is set, and the first heat insulation cotton 6 and the second heat insulation cotton 7 are filled inside, so that it has a certain heat insulation function during silencing, which improves the silencing effect. Secondly, the air inlet pipe 8 penetrates into the inner cylinder 3 and is located inside the first cavity 10. At the same time, the air inlet pipe 8 has silencing exhaust holes at the positions of the first cavity 10 and the heat insulation cavity 5, so that some flue gas can be discharged into the heat insulation cavity 5 for heat insulation during the silencing expansion. The sealing positioning plate 14 ensures the stability of the air inlet pipe 8 installed on the outer cylinder 2 and the inner cylinder 3. The support frame 15 supports the arc-shaped support plate 1, and the reinforcing rib 16 facilitates the installation of the silencer. Finally, after the electric telescopic rod 17 is activated, it can drive the piston disc 18 to slide, thereby achieving the function of air intake. The limiting slide rod 19 limits the piston disc 18, allowing the piston disc 18 to slide along the limiting slide rod 19. By setting the electric telescopic rod 17 and the piston disc 18, the internal air pressure can be changed, thereby drawing the flue gas inside the first chamber 10 into the second chamber 11. It can have a certain flue gas guiding function, thereby extracting more flue gas that has entered the heat insulation chamber 5, and thus expelling more exhaust gas.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A tail gas treatment silencer, characterized in that: The device includes an arc-shaped support plate (1), an outer cylinder (2), and an inner cylinder (3). A connecting block (4) is fixedly connected to the inner wall of the outer cylinder (2). The inner wall of the outer cylinder (2) is fixedly connected to the outer side of the inner cylinder (3) through the connecting block (4). A heat insulation cavity (5) is formed between the inner wall of the outer cylinder (2) and the outer side of the inner cylinder (3). The heat insulation cavity (5) is filled with a first heat insulation cotton (6) and a second heat insulation cotton (7). An air inlet pipe is connected to the surface of the outer cylinder (2). (8) A partition plate (9) is fixedly connected to the inner wall of the inner cylinder (3). The partition plate (9) forms a first cavity (10) and a second cavity (11) on both sides of the inner cylinder (3). A duct tube (12) is connected to the bottom of the partition plate (9) and inside the second cavity (11). An exhaust pipe (13) is connected to the top of the partition plate (9). Multiple circumferentially distributed vent holes are opened inside the inner cylinder (3) and on one side of the inner wall of the first cavity (10).

2. The exhaust gas treatment silencer according to claim 1, characterized in that: One end of the air inlet pipe (8) passes through the outer cylinder (2) and the inner cylinder (3) in sequence and extends into the interior of the inner cylinder (3). One end of the exhaust pipe (13) passes through the partition plate (9), the inner cylinder (3) and the outer cylinder (2) in sequence and extends to one side of the outer cylinder (2).

3. The exhaust gas treatment silencer according to claim 1, characterized in that: The air inlet pipe (8) located in the first cavity (10) and the heat insulation cavity (5) has a sound-absorbing exhaust hole. The surface of the air inlet pipe (8) and the positions located on the outside of the outer cylinder (2) and the inside of the inner cylinder (3) are fixedly connected to a sealing positioning plate (14). The end of the air inlet pipe (8) located on the outside of the outer cylinder (2) is fixedly connected to an external flange.

4. The exhaust gas treatment silencer according to claim 1, characterized in that: The bottom of the arc-shaped support plate (1) is fixedly connected to a support frame (15), and both sides of the support frame (15) are fixedly connected to reinforcing ribs (16).

5. The exhaust gas treatment silencer according to claim 1, characterized in that: The partition (9) is fixedly connected to an electric telescopic rod (17) at the center of one side of the second cavity (11), and a piston disc (18) is fixedly connected to one end of the electric telescopic rod (17).

6. The exhaust gas treatment silencer according to claim 5, characterized in that: The surface of the piston disc (18) is slidably connected to the inner wall of the inner cylinder (3). Four circumferentially arranged limiting slide rods (19) are fixedly connected between one side of the partition (9) and one side of the inner wall of the inner cylinder (3). The interior of the piston disc (18) is slidably connected to the surface of the limiting slide rods (19).

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