Aerobic gas injection device for refuse landfill

Abstract

The utility model relates to an aerobic gas injection device for a refuse landfill, which belongs to the technical field of aerobic treatment of the refuse landfill and comprises an air pump and a connecting pipe communicated with the air pump, the top end of the connecting pipe is communicated with a gas pipe, and a gas supply pipe is fixedly mounted outside the gas injection pipe. An exhaust hole used for exhausting air is formed in the outer wall of the air supply pipe, and a blocking structure is further arranged in the air supply pipe. According to the aerobic gas injection device for the refuse landfill, the connecting pipe and the gas injection pipe are arranged to be matched with the air pump to inject air into the refuse heap, so that the oxygen content in the refuse heap is increased, and the yield of methane and odor is reduced and the stabilization of the refuse heap is accelerated by creating an aerobic living environment for dominant aerobic flora and inhibiting the propagation of anaerobic microorganisms. The air supply pipe is additionally arranged outside the air injection pipe, and the extension pipe and the plugging disc are arranged on the air supply pipe, so that an air supply opening, namely a conducting hole, in a normal state can be sealed and protected, the pipe opening corrosion phenomenon is reduced, and the air supply pipe outside the air injection pipe can be detached, so that the later maintenance convenience is also improved.

Description

Technical Field

[0001] This application relates to the field of aerobic treatment technology for landfills, specifically an aerobic aeration device for landfills. Background Technology

[0002] Landfill odors are primarily carried by leachate and landfill gas. As the landfill degrades, odors are continuously generated and accumulated within the landfill. Aerobic pretreatment involves injecting air into the landfill to create an aerobic environment for dominant aerobic bacteria, inhibiting the growth of anaerobic microorganisms, thereby reducing methane and odor production, accelerating landfill stabilization, minimizing the landfill's environmental impact, and lowering post-closure maintenance costs and risks.

[0003] Currently, landfills use aeration pipes inserted into the waste pile to inject gas. However, due to the long-term contact between the pipes and the waste, corrosion often occurs at the pipe openings. To ensure the aeration device meets the requirements, the pipes need to be replaced regularly, which is very troublesome. Therefore, an aerobic aeration device for landfills is proposed to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an aerobic aeration device for landfills, which has advantages such as non-contact corrosion protection at the pipe inlet and improved service life of the aeration device.

[0005] To achieve the above objectives, this application provides the following technical solution: an aerobic aeration device for a landfill, comprising a blower and a connecting pipe connected to the blower, an air pipe connected to the top of the connecting pipe, an air supply pipe fixedly installed on the outside of the aeration pipe, an exhaust hole for discharging air on the outer wall of the air supply pipe, and a sealing structure provided inside the air supply pipe.

[0006] The sealing structure includes an extension pipe fixedly installed outside the air supply pipe, a sealing disc slidably installed inside the extension pipe, a blocking ring fixedly installed on the inner wall of the extension pipe, an isolation frame fixedly installed on the inner wall of the air supply pipe, a spring seat fixedly installed on the isolation frame, and a return spring connected between the spring seat and the sealing disc.

[0007] Furthermore, there are two air pumps, which are respectively connected to both ends of the connecting pipe, and the two air pumps share one connecting pipe.

[0008] Furthermore, the air delivery pipe is fixed in a ring shape to the outside of the air injection pipe, and the air delivery pipe includes multiple components located on the air injection pipe.

[0009] Furthermore, the air delivery pipe is hollow inside and enclosed outside the air injection pipe to form an annular space, and a through hole communicating with the air delivery pipe is provided on the outer wall of the air injection pipe.

[0010] Furthermore, the blocking ring is a rubber ring with an arc-shaped cross-section, and there are two layers of the blocking ring inside the extension tube. The diameter of the blocking ring closer to the outside of the extension tube is smaller than that of the other layer of the blocking ring.

[0011] Furthermore, a telescopic rod is installed between the sealing disc and the spring seat. The telescopic rod is used to connect the sealing disc and guide the movement trajectory of the sealing disc.

[0012] Furthermore, the connecting pipe is laid in an arch shape above the waste pile.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This landfill aerobic aeration system uses connecting pipes and injection pipes in conjunction with a blower to inject air into the landfill, increasing the oxygen content and thus suppressing and reducing the production of methane and odorous gases. By adding an external air supply pipe to the injection pipe, and installing an extension pipe and sealing plate on the supply pipe, the normally open air supply hole (the guide hole) can be sealed and protected, reducing pipe corrosion. The detachable external air supply pipe also increases the convenience of future maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the air supply pipe in this application;

[0017] Figure 3 This is a three-dimensional structural view of the extension tube of this application;

[0018] Figure 4 This is a diagram of the gas injection control system for this application.

[0019] In the diagram: 1. Air pump; 2. Connecting pipe; 3. Air injection pipe; 4. Air delivery pipe; 5. Through hole; 6. Exhaust hole; 7. Extension pipe; 8. Sealing plate; 9. Isolation frame; 10. Spring seat; 11. Return spring; 12. Telescopic rod; 13. Blocking ring. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Please see Figures 1 to 4 An aerobic aeration device for a landfill in this embodiment includes an air pump 1 and a connecting pipe 2 connected to the air pump 1. There are two air pumps 1, which are respectively connected to the two ends of the connecting pipe 2. The two air pumps 1 share a connecting pipe 2. Specifically, the connecting pipe 2 is laid in an arch shape above the landfill.

[0022] In this embodiment, the top end of the connecting pipe 2 is connected to an injection pipe 3 that extends into the interior of the waste pile, through which gas can be injected.

[0023] It should be noted that an air supply pipe 4 is also fixedly installed on the outside of the air injection pipe 3. The air supply pipe 4 is fixed in a ring shape on the outside of the air injection pipe 3, and the air supply pipe 4 includes multiple pipes located on the air injection pipe 3.

[0024] Preferably, the air supply pipe 4 is hollow inside and enclosed outside the air injection pipe 3 to form an annular space. The outer wall of the air injection pipe 3 is provided with a through hole 5 that communicates with the air supply pipe 4. Through the design of the through hole 5, the air inside the air injection pipe 3 can be sent into the interior of the air supply pipe 4.

[0025] In this embodiment, the outer wall of the air supply pipe 4 is provided with an exhaust hole 6 for discharging air and injecting air into the interior of the garbage pile. The interior of the air supply pipe 4 is also provided with a sealing structure to prevent the guide hole 5 from contacting the garbage.

[0026] In this embodiment, the sealing structure includes an extension pipe 7 fixedly installed outside the air supply pipe 4, and a sealing disc 8 is slidably installed inside the extension pipe 7 to isolate the air supply pipe 4 from the outside.

[0027] It should be noted that a blocking ring 13 is also fixedly installed on the inner wall of the extension tube 7. The blocking ring 13 is a rubber ring with an arc-shaped cross section, which can improve the tightness of contact with the sealing disc 8 and at the same time, can hinder the movement of the sealing disc 8 relative to the extension tube 7 to a certain extent.

[0028] In order to allow the sealing disc 8 to move and reset, an isolation frame 9 is fixedly installed on the inner wall of the air supply pipe 4 in this embodiment. The isolation frame 9 isolates the extension pipe 7, making it difficult for waste products to come into contact with the inside of the air supply pipe 4.

[0029] In this embodiment, a spring seat 10 is also fixedly installed on the isolation frame 9. A return spring 11 is connected between the spring seat 10 and the sealing plate 8. One end of the return spring 11 is fixedly connected to the sealing plate 8, and the other end is fixedly connected to the spring seat 10. By pulling the sealing plate 8 with the return spring 11, the sealing plate 8 can slide towards the inside of the extension tube 7 to close the extension tube 7.

[0030] It should be noted that there are two layers of blocking ring 13 inside the extension tube 7. The diameter of the blocking ring 13 closer to the outside of the extension tube 7 is smaller than that of the other blocking ring 13, so that the sealing disc 8 can pass over one layer of blocking ring 13, but cannot pass over the other layer of blocking ring 13.

[0031] It should be noted that the reset spring 11 should have sufficient spring force to pull the sealing disc 8 over one layer of blocking ring 13 to close.

[0032] In this embodiment, a telescopic rod 12 is also installed between the sealing disc 8 and the spring seat 10. The telescopic rod 12 is used to connect the sealing disc 8 and guide the movement trajectory of the sealing disc 8.

[0033] The working principle of the above embodiments is as follows:

[0034] By controlling the air pump 1 to inject air into the connecting pipe 2, the air flows along the air injection pipe 3 connected to the connecting pipe 2. At this time, the air in the air injection pipe 3 enters the interior of the air delivery pipe 4 through the guide hole 5. At this time, the air delivery pipe 4 is in a closed state. As the air pressure in the air delivery pipe 4 gradually increases, the air pressure pushes the sealing disc 8 to overcome the restriction of the return spring 11 and the blocking ring 13 and move to the outside of the extension pipe 7, so that the air is sent into the interior of the garbage pile. After the air is stopped, the sealing disc 8 is pulled back into the interior of the extension pipe 7 by the return spring 11, thus closing the air delivery pipe 4.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0036] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aerobic aeration device for a landfill, comprising a blower (1) and a connecting pipe (2) connected to the blower (1), characterized in that: The top end of the connecting pipe (2) is connected to an air injection pipe (3), and an air supply pipe (4) is fixedly installed on the outside of the air injection pipe (3). An exhaust hole (6) for discharging air is opened on the outer wall of the air supply pipe (4), and a sealing structure is provided inside the air supply pipe (4). The sealing structure includes an extension pipe (7) fixedly installed outside the air supply pipe (4), a sealing disc (8) slidably installed inside the extension pipe (7), a blocking ring (13) fixedly installed on the inner wall of the extension pipe (7), an isolation frame (9) fixedly installed on the inner wall of the air supply pipe (4), a spring seat (10) fixedly installed on the isolation frame (9), and a return spring (11) connected between the spring seat (10) and the sealing disc (8).

2. The aerobic aeration device for a landfill according to claim 1, characterized in that: There are two air pumps (1), which are respectively connected to the two ends of the connecting pipe (2), and the two air pumps (1) share one connecting pipe (2).

3. The aerobic aeration device for a landfill according to claim 1, characterized in that: The air delivery pipe (4) is fixed in a ring shape to the outside of the air injection pipe (3), and the air delivery pipe (4) includes multiple parts located on the air injection pipe (3).

4. The aerobic aeration device for a landfill according to claim 1, characterized in that: The air delivery pipe (4) is hollow inside and enclosed outside the air injection pipe (3) to form an annular space. A through hole (5) communicating with the air delivery pipe (4) is provided on the outer wall of the air injection pipe (3).

5. The aerobic aeration device for a landfill according to claim 1, characterized in that: The blocking ring (13) is a rubber ring with an arc-shaped cross section. There are two layers of the blocking ring (13) inside the extension tube (7). The diameter of the blocking ring (13) closer to the outside of the extension tube (7) is smaller than that of the other layer of the blocking ring (13).

6. The aerobic aeration device for a landfill according to claim 1, characterized in that: A telescopic rod (12) is also installed between the sealing disc (8) and the spring seat (10). The telescopic rod (12) is used to connect the sealing disc (8) and guide the movement trajectory of the sealing disc (8).

7. The aerobic aeration device for a landfill according to claim 1, characterized in that: The connecting pipe (2) is laid in an arch shape above the garbage pile.

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