Gas filtering device for landfill

Abstract

The utility model relates to the technical field of landfill, and discloses a gas filtering device for landfill, which comprises a filtering box and a gas inlet pipe, one end of the gas inlet pipe in the filtering box is communicated with a connecting pipe, one end of the connecting pipe far away from the gas inlet pipe is sealed, and the outer wall of the connecting pipe is communicated with a plurality of gas dispersing pipes. A plurality of evenly-arranged air dispersing holes are formed in the outer walls of the air dispersing pipes in a penetrating mode, and openings of the air dispersing holes are obliquely formed in the direction of the bottom of the filter box. According to the gas filtering device for garbage landfill, landfill gas guided into the filtering box through the gas inlet pipe can be dispersed through the gas dispersing tank, and is dispersed into filtered water through the gas dispersing holes, so that the landfill gas can be dispersed into a plurality of small bubbles, and the small bubbles can be in more sufficient contact with the filtered water in the filtering box; the filtering effect of the landfill gas is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage landfill, in particular to a gas filtering device for garbage landfill. Background Art

[0002] Landfill is the process of collecting garbage and burying it underground. During the landfill process, various gases will be generated in the garbage due to the processing of microorganisms. Once the gas is not discharged, the underground pressure will become higher and higher. In order to collect and reuse the gas generated in the garbage, a gas collection device is usually used to collect it. In order to reduce impurities such as garbage dust particles in the collected gas, a filtering device is also used to filter the collected gas, making the collected gas cleaner and free of impurities.

[0003] For example, a landfill gas filtration device in a landfill area disclosed in the patent with publication number CN216653958U includes a filter box, an air intake pipe is provided through the filter box, an exhaust pipe is provided on the top of the air intake pipe through a filter structure, the filter box is filled with water, the filter structure is provided on the top of the filter box through a connecting component, the filter structure includes an internal sliding component, a conical shell, a gas discharge hole and an internal filter, a conical shell is provided at the end of the exhaust pipe, the conical shell extends to the inside of the filter box, and a gas discharge hole is opened on the conical shell, an internal sliding component is provided inside the conical shell, and an internal filter is provided at the output end of the internal sliding component. By using water to preliminarily filter the gas, the impurities mixed in the gas can be adsorbed by the water, so that the cleanliness of the discharged gas is higher.

[0004] However, the filtering device in the above technology still has the following problems:

[0005] When landfill gas enters the filter box through the air intake pipe, the gas will be compressed into bubbles by the water pressure and rise up. This causes the landfill gas and the filtered water to be unable to fully contact, and some impurities rise with the gas, resulting in poor filtering effect. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a landfill gas filtering device, such as: when the landfill gas in the air inlet pipe enters the filtered water, the landfill gas is dispersed so that the landfill gas can fully contact the filtered water, thereby further improving the filtering effect.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a landfill gas filter device, comprising a filter box and an air inlet pipe, wherein one end of the air inlet pipe located in the filter box is connected to a connecting pipe, and the end of the connecting pipe away from the air inlet pipe is sealed, and the outer wall of the connecting pipe is connected to a plurality of diffusion pipes, and the outer walls of the plurality of diffusion pipes are penetrated by a plurality of evenly arranged diffusion holes, and the openings of the plurality of diffusion holes are inclined toward the bottom of the filter box.

[0008] Furthermore, the air intake pipe and the connecting pipe are rotatably connected via a bearing.

[0009] Furthermore, the air diffusion holes of the plurality of air diffusion pipes are all opened in a clockwise direction or a counterclockwise direction.

[0010] Furthermore, the outer wall of the connecting pipe is fixedly connected and communicated with a plurality of internally threaded pipes, one end of a plurality of air diffusion pipes close to the connecting pipe is fixedly connected and communicated with an externally threaded pipe, the plurality of externally threaded pipes are respectively threadedly connected with the plurality of internally threaded pipes, the outer walls of the plurality of internally threaded pipes are connected with limiting assemblies, and the plurality of limiting assemblies are respectively connected with adjacent air diffusion pipes.

[0011] Furthermore, the limit assembly includes a limit sleeve, a telescopic spring, a connecting block and a connecting sleeve. The limit sleeve is fixedly connected to the outer wall of the internal threaded tube, the connecting sleeve is fixedly connected to the outer wall of the diffuser pipe near one end of the internal threaded tube, the outer walls at both ends of the connecting block are respectively slidably connected to the inner walls of the limit sleeve and the connecting sleeve, the telescopic spring is located in the limit sleeve, and the two ends of the telescopic spring are respectively fixedly connected to the limit sleeve and the connecting block.

[0012] Furthermore, a splitting groove is formed through a side of the limiting sleeve away from the internally threaded tube.

[0013] Furthermore, a split block is fixedly connected to one side of the connecting block close to one end of the telescopic spring and close to the splitting groove. The splitting block is slidably connected to the splitting groove, and the sliding distance of the splitting block in the splitting groove is not less than the length of the connecting block.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] This type of landfill gas filtering device can disperse the landfill gas introduced into the filter box through the air inlet pipe through the gas dispersion tank, and diffuse it into the filtered water through the gas dispersion holes, so that the landfill gas can be dispersed into many small bubbles, so that the small bubbles can have more sufficient contact with the filtered water in the filter box, further improving the filtering effect of the landfill gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional schematic diagram of the overall connection structure of the utility model;

[0017] Figure 2 Based on Figure 1 Schematic diagram of some connection structures;

[0018] Figure 3 Based on Figure 2 A magnified schematic diagram of a part of the connection structure;

[0019] Figure 4 Based on Figure 3 A cross-sectional schematic diagram of a connection structure;

[0020] Figure 5 Based on Figure 3 Exploded diagram of the connection structure.

[0021] In the figure: 1, filter box; 2, air inlet pipe; 3, air diffusion pipe; 4, connecting pipe; 5, internal threaded pipe; 6, external threaded pipe; 7, limit sleeve; 8, telescopic spring; 9, connecting block; 10, connecting sleeve; 11, split block; 301, air diffusion hole; 701, split groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1 - Figure 5 A landfill gas filtration device comprises a filter box 1 and an air inlet pipe 2, wherein one end of the air inlet pipe 2 located in the filter box 1 is connected with a connecting pipe 4, and one end of the connecting pipe 4 away from the air inlet pipe 2 is sealed, and the outer wall of the connecting pipe 4 is connected with a plurality of air diffusion pipes 3, and the outer walls of the plurality of air diffusion pipes 3 are penetrated with a plurality of evenly arranged air diffusion holes 301, and the openings of the plurality of air diffusion holes 301 are inclined toward the bottom of the filter box 1.

[0024] like Figure 1 - Figure 5 As shown, the landfill gas filter device in the utility model is similar in structure to the existing landfill gas filter device, such as a landfill gas filter device in a landfill area disclosed in the patent with publication number CN216653958U. The main improvement of the utility model is that the landfill gas can be fully contacted with the filtered water, thereby improving the filtering effect of the landfill gas. Figures 1 to 5As shown, when the landfill gas filtering device of the utility model is in use, when the landfill gas is introduced into the filter box 1 through the air inlet pipe 2, the gas will be dispersed into the multiple diffusion pipes 3 through the connecting pipe 4, and then the gas will be dispersed into the filtered water in the filter box 1 through the multiple diffusion holes 301 opened on the diffusion pipes 3, thereby generating a large number of small bubbles in contact with the filtered water, so that the landfill gas can be in more sufficient contact with the filtered water, further improving the filtering effect of the landfill gas, and at the same time, the openings of the diffusion holes 301 are tilted downward, so that the gas can form small bubbles through the buoyancy when it just comes out of the diffusion holes 301, thereby avoiding a large amount of gas from buoyantly emitting from the diffusion holes 301 to form large bubbles.

[0025] like Figure 1 and Figure 2 As shown, the air inlet pipe 2 is rotatably connected to the connecting pipe 4 through a bearing. The connecting pipe 4 is connected to the air inlet pipe 2 through a bearing. When the landfill gas emerges through the inclined diffuser holes 301, a reverse thrust can be formed on the diffuser pipe 3, so that the diffuser pipe 3 and the connecting pipe 4 rotate under the air inlet pipe 2 through the bearing, thereby stirring the filtered water inside the filter box 1, so that the filtered water is fully mixed with the landfill gas entering the filter box 1, and the filtering effect is further improved.

[0026] like Figure 1 and Figure 2 As shown, the air diffusion holes 301 of the plurality of air diffusion pipes 3 are all opened in a clockwise direction or a counterclockwise direction. The air diffusion holes 301 on the plurality of air diffusion pipes 3 are designed in the same circumferential direction, so that when the gas emerges from the air diffusion holes 301, the reverse thrusts formed on the plurality of air diffusion pipes 3 are in the same direction, so that the air diffusion pipes 3 can rotate smoothly and stir the filtered water.

[0027] like Figure 1 - Figure 5 As shown, the outer wall of the connecting pipe 4 is fixedly connected and communicated with a plurality of internally threaded pipes 5, and one end of the plurality of air diffuser pipes 3 close to the connecting pipe 4 is fixedly connected and communicated with an externally threaded pipe 6, and the plurality of externally threaded pipes 6 are respectively threadedly connected with the plurality of internally threaded pipes 5, and the outer walls of the plurality of internally threaded pipes 5 are connected with a limiting assembly, and the plurality of limiting assemblies are respectively connected with adjacent air diffuser pipes 3. Through the connection and cooperation between the externally threaded pipes 6 and the internally threaded pipes 5, the installation and disassembly between the air diffuser pipes 3 and the connecting pipe 4 can be facilitated, and the air diffuser pipes 3 can be disassembled for cleaning or replacement when the air diffuser holes 301 on the air diffuser pipes 3 are blocked. At the same time, during installation, the position of the air diffuser pipes 3 can be limited by the limiting assembly to ensure that the air diffuser holes 301 on the air diffuser pipes 3 can maintain a certain direction with the air diffuser holes 301 on other air diffuser pipes 3.

[0028] like Figure 1 - Figure 5As shown, the limiting assembly includes a limiting sleeve 7, a telescopic spring 8, a connecting block 9 and a connecting sleeve 10. The limiting sleeve 7 is fixedly connected to the outer wall of the internal threaded tube 5, the connecting sleeve 10 is fixedly connected to the outer wall of the diffuser pipe 3 near one end of the internal threaded tube 5, the outer walls at both ends of the connecting block 9 are respectively slidably connected to the inner walls of the limiting sleeve 7 and the connecting sleeve 10, the telescopic spring 8 is located in the limiting sleeve 7, and the two ends of the telescopic spring 8 are respectively fixedly connected to the limiting sleeve 7 and the connecting block 9. When installing the air diffusion pipe 3, press the connecting block 9 into the limiting sleeve 7, and thread the external threaded tube 6 on the air diffusion pipe 3 with the corresponding internal threaded tube 5. When it is close to being tightened, the air diffusion hole 301 can be oriented in the same direction as other air diffusion holes 301, and the connecting block 9 can be pressed outward by the telescopic spring 8 so that the connecting block 9 is inserted into the connecting sleeve 10, so that the air diffusion pipe 3 is connected and fixed to the internal threaded tube 5, ensuring that the air diffusion pipe 3 will not loosen, and at the same time ensuring that the air diffusion hole 301 can maintain the same rotation direction as the air diffusion holes 301 on other air diffusion pipes 3.

[0029] like Figure 3 - Figure 5 As shown, a splitting groove 701 is formed on the side of the limiting sleeve 7 away from the internal threaded tube 5. When the connecting block 9 is pressed into the limiting sleeve 7, the connecting block 9 can be pressed by the splitting groove 701 to prevent the telescopic spring 8 from pushing the connecting block 9 outward. When the air distribution pipe 3 and the internal threaded tube 5 are disassembled, the connecting block 9 can also be pushed into the limiting sleeve 7 by the splitting groove 701, so that the connecting block 9 is separated from the connecting sleeve 10, thereby rotating and disassembling the air distribution pipe 3 and the external threaded tube 6 from the internal threaded tube 5.

[0030] like Figure 3 - Figure 5 As shown, the connection block 9 is fixedly connected with a split block 11 on one side close to one end of the telescopic spring 8 and close to the splitting groove 701. The split block 11 is slidably connected to the splitting groove 701. The split block 11 can slide in the splitting groove 701 for a distance not less than the length of the connection block 9. When the connection block 9 is moved, the split block 11 can slide back and forth in the splitting groove 701 to drive the connection block 9 to connect or separate with the corresponding connection sleeve 10, which is more convenient to use and easy to operate.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A landfill gas filtration device, comprising a filter box (1) and an air inlet pipe (2), characterized in that: One end of the air intake pipe (2) located in the filter box (1) is connected to a connecting pipe (4); the end of the connecting pipe (4) away from the air intake pipe (2) is of a sealed design; the outer wall of the connecting pipe (4) is connected to a plurality of air diffusion pipes (3); the outer walls of the plurality of air diffusion pipes (3) are all penetrated by a plurality of evenly arranged air diffusion holes (301); the openings of the plurality of air diffusion holes (301) are all inclined toward the bottom of the filter box (1).

2. A landfill gas filtration device according to claim 1, characterized in that: The air intake pipe (2) and the connecting pipe (4) are rotatably connected via a bearing.

3. A landfill gas filtration device according to claim 1 or 2, characterized in that: The air diffusion holes (301) formed on the plurality of air diffusion pipes (3) are all formed in a clockwise direction or a counterclockwise direction.

4. A landfill gas filtration device according to claim 1 or 2, characterized in that: The outer wall of the connecting pipe (4) is fixedly connected to and communicated with a plurality of internally threaded pipes (5); one end of the plurality of air diffusion pipes (3) close to the connecting pipe (4) is fixedly connected to and communicated with an externally threaded pipe (6); the plurality of externally threaded pipes (6) are respectively threadedly connected to the plurality of internally threaded pipes (5); the outer walls of the plurality of internally threaded pipes (5) are connected to limiting components; and the plurality of limiting components are respectively connected to adjacent air diffusion pipes (3).

5. A landfill gas filtration device according to claim 4, characterized in that: The limiting assembly comprises a limiting sleeve (7), a telescopic spring (8), a connecting block (9) and a connecting sleeve (10); the limiting sleeve (7) is fixedly connected to the outer wall of the internally threaded tube (5); the connecting sleeve (10) is fixedly connected to the outer wall of the diffuser pipe (3) close to one end of the internally threaded tube (5); the outer walls at both ends of the connecting block (9) are respectively slidably connected to the inner walls of the limiting sleeve (7) and the connecting sleeve (10); the telescopic spring (8) is located in the limiting sleeve (7); and the two ends of the telescopic spring (8) are respectively fixedly connected to the limiting sleeve (7) and the connecting block (9).

6. A landfill gas filtration device according to claim 5, characterized in that: A splitting groove (701) is formed through the side of the limiting sleeve (7) away from the internally threaded tube (5).

7. A landfill gas filtration device according to claim 6, characterized in that: A split block (11) is fixedly connected to one side of the connecting block (9) close to one end of the telescopic spring (8) and close to the splitting groove (701); the splitting block (11) is slidably connected to the splitting groove (701); and the splitting block (11) can slide in the splitting groove (701) for a distance not less than the length of the connecting block (9).

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