A biogas slurry return circulation system

Abstract

The utility model relates to the technical field of biogas reflux system, specifically, to a biogas reflux circulation system, including a biogas tank, a connecting pipe connected to the inside of the biogas tank is fixedly installed on the side of the biogas tank, a supporting net is fixedly installed on the bottom position of the connecting pipe, a sand and gravel layer is arranged above the supporting net, a fine sand filter layer is arranged above the sand and gravel layer, a filtering treatment component is arranged above the fine sand filter layer, the filtering treatment component includes a vertical cylinder, a coarse filter screen, a precision filter screen and an activated carbon adsorption layer are fixedly installed on the inner wall of the vertical cylinder from bottom to top in sequence, an external delivery pipe is also fixedly installed on the pipe body of the connecting pipe, the external delivery pipe is located above the activated carbon adsorption layer, and a top cover is hinged on the top surface of the connecting pipe through a hinge. The utility model can perform a permeation filtering operation, and the filtered biogas slurry can be refluxed for recycling, which brings convenience to users.

Description

Technical Field

[0001] The utility model relates to the technical field of biogas slurry return system, in particular to a biogas slurry return circulation system. Background Art

[0002] Biogas digesters are usually accompanied by the production of biogas slurry, which is generally used directly as fertilizer in farmland. However, since most of the biogas slurry is water, it is difficult to be fully utilized in time when there is too much water. At this time, the biogas slurry is generally circulated and then transported to other parts for use. When performing the circulatory operation of the biogas slurry, a corresponding biogas slurry circulatory system is required.

[0003] The common biogas slurry return circulation system on the market generally uses the pump body to transport the biogas slurry to the corresponding treatment equipment for treatment before supplying it to the outside world. However, since the biogas slurry still contains some impurities, these impurities are easily stuck on the impeller in the pump body after being directly transported through the pump body, making the impeller in the pump body unable to rotate normally, causing the pump body to malfunction and affecting the transportation of biogas slurry. In addition, when using the pump body for transportation, it is also easy for more impurities to be blocked on the filter screen, and it is not easy to clean, which brings inconvenience to users. In view of this, we propose a biogas slurry return circulation system. Utility Model Content

[0004] The purpose of the utility model is to provide a biogas slurry return circulation system to solve the defects mentioned in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A biogas slurry reflux circulation system comprises a biogas tank, a connecting pipe connected with the interior of the biogas tank is fixedly installed on the side of the biogas tank, a supporting net is fixedly installed on the pipe wall at the bottom position of the connecting pipe, a sand and gravel layer is arranged above the supporting net, a fine sand filter layer is arranged above the sand and gravel layer, a filtering treatment component is arranged above the fine sand filter layer, the filtering treatment component comprises a vertical cylinder, a coarse filter screen, a fine filter screen and an activated carbon adsorption layer are fixedly installed on the inner wall of the vertical cylinder in sequence from bottom to top, an external delivery pipe is also fixedly installed on the pipe body of the connecting pipe, and the external delivery pipe is located above the activated carbon adsorption layer.

[0007] Preferably, an inner support tube is provided above the fine sand filter layer, and the inner support tube is fixedly mounted on the inner wall of the connecting pipe. The vertical tube and the inner support tube are plug-fitted to facilitate the limiting installation operation of the vertical tube by the inner support tube.

[0008] Preferably, a fixing ring is fixedly mounted on the top cylinder of the vertical cylinder, and the fixing ring is fixedly mounted on the top surface of the inner support cylinder, so as to facilitate the fixing operation of the vertical cylinder.

[0009] Preferably, the cross-section of the connecting pipe is L-shaped, and the height of the connecting pipe is equal to the height of the biogas tank, which is conducive to keeping the liquid levels in the connecting pipe and the biogas tank consistent.

[0010] Preferably, a top cover is hingedly connected to the top surface of the connecting pipe via a hinge, and the top cover is used for dust protection when closed.

[0011] Preferably, a handle is fixedly mounted on the end of the top cover, and the handle is used for opening and closing the top cover.

[0012] Preferably, the size of the vertical tube is matched with the size of the inner support tube, and the bottom surface of the fixing ring is tightly fitted with the top surface of the inner support tube to ensure sealing.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a connecting pipe, and a supporting net, a gravel layer, a fine sand filter layer and a filtering treatment component are arranged in the connecting pipe, so as to ensure that when in use, an infiltration treatment operation can be performed from bottom to top, and the infiltration treatment does not need to use a pump body for transportation. In addition, there is no need to worry about the filter being blocked when infiltrating from bottom to top, which is convenient to use and achieves the effect of facilitating the return and recycling of the biogas slurry.

[0015] 2. The utility model is fixedly connected between the fixed ring and the inner support cylinder by a plurality of fastening bolts, so that the filter processing assembly can be disassembled and replaced conveniently, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 3 It is a cross-sectional view of the connecting pipe of the utility model;

[0019] Figure 4 It is a cross-sectional view of the vertical cylinder of the utility model.

[0020] The meaning of each number in the figure is:

[0021] 1. Biogas tank; 10. Connecting pipe; 11. Support net; 12. Sand and gravel layer; 13. Fine sand filter layer; 14. Inner support cylinder; 15. External delivery pipe; 16. Top cover; 161. Handle;

[0022] 2. Filtration treatment assembly; 20. Fixed ring; 21. Vertical cylinder; 22. Coarse filter; 23. Fine filter; 24. Activated carbon adsorption layer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 4 The utility model provides a technical solution: a biogas slurry reflux circulation system, comprising a biogas tank 1, a connecting pipe 10 connected to the inside of the biogas tank 1 is fixedly installed on the side of the biogas tank 1, the cross section of the connecting pipe 10 is L-shaped, and the height of the connecting pipe 10 is equal to the height of the biogas tank 1, which is conducive to keeping the connecting pipe 10 and the liquid level in the biogas tank 1 consistent, and performing the permeation filtration operation;

[0025] Specifically, a support net 11 is fixedly installed on the pipe wall at the bottom position of the connecting pipe 10, a gravel layer 12 is arranged above the support net 11, a fine sand filter layer 13 is arranged above the gravel layer 12, and a filtering treatment component 2 is arranged above the fine sand filter layer 13. The filtering treatment component 2 includes a vertical cylinder 21, and a coarse filter screen 22, a fine filter screen 23 and an activated carbon adsorption layer 24 are fixedly installed on the inner wall of the vertical cylinder 21 from bottom to top in sequence. An external delivery pipe 15 is also fixedly installed on the pipe body of the connecting pipe 10, and the external delivery pipe 15 is located above the activated carbon adsorption layer 24, so as to ensure that when in use, the gravel layer 12, the fine sand filter layer 13, the coarse filter screen 22, the fine filter screen 23 and the activated carbon adsorption layer 24 can be used to realize the permeation filtration treatment operation of the biogas slurry from bottom to top.

[0026] In this embodiment, an inner support tube 14 is provided above the fine sand filter layer 13. The inner support tube 14 is fixedly installed on the inner wall of the connecting pipe 10. The vertical tube 21 is plugged into the inner support tube 14, so that the inner support tube 14 can be used to limit the installation of the vertical tube 21.

[0027] Specifically, a fixing ring 20 is fixedly installed on the top cylinder of the vertical cylinder 21 , and the fixing ring 20 is fixedly installed on the top surface of the inner support cylinder 14 , so as to facilitate the fixing operation of the vertical cylinder 21 .

[0028] Furthermore, a top cover 16 is hingedly connected to the top surface of the connecting pipe 10 via a hinge, and the top cover 16 is used for dust protection when closed.

[0029] In addition, a handle 161 is fixedly mounted on the end of the top cover 16 , and the handle 161 is used for opening and closing operations of the top cover 16 .

[0030] It is worth noting that the size of the vertical tube 21 is compatible with the size of the inner support tube 14, and the bottom surface of the fixing ring 20 is tightly fitted with the top surface of the inner support tube 14 to ensure sealing.

[0031] When the biogas slurry reflux circulation system of the utility model is in use, the vertical cylinder 21 is inserted into the inner support cylinder 14, and the fixing ring 20 is fixedly installed on the top surface of the inner support cylinder 14. After the biogas slurry is discharged into the biogas tank 1, since the connecting pipe 10 is connected with the biogas tank 1, as the liquid level rises, the biogas slurry can be filtered from bottom to top through the sand and gravel layer 12, the fine sand filter layer 13, the coarse filter screen 22, the fine filter screen 23 and the activated carbon adsorption layer 24 in sequence, and the water after the infiltration filtration can be discharged to the outside along the external delivery pipe 15 for use.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A biogas slurry recirculation system, comprising a biogas tank (1), characterized in that: A connecting pipe (10) connected to the inside of the biogas tank (1) is fixedly installed on the side of the biogas tank (1); a supporting net (11) is fixedly installed on the pipe wall at the bottom position of the connecting pipe (10); a sand and gravel layer (12) is arranged above the supporting net (11); a fine sand filter layer (13) is arranged above the sand and gravel layer (12); a filtering component (2) is arranged above the fine sand filter layer (13); the filtering component (2) comprises a vertical cylinder (21); a coarse filter screen (22), a fine filter screen (23) and an activated carbon adsorption layer (24) are fixedly installed on the inner wall of the vertical cylinder (21) in sequence from bottom to top; an external delivery pipe (15) is also fixedly installed on the pipe body of the connecting pipe (10); the external delivery pipe (15) is located above the activated carbon adsorption layer (24).

2. The biogas slurry return circulation system according to claim 1, characterized in that: An inner support cylinder (14) is arranged above the fine sand filtering layer (13), the inner support cylinder (14) is fixedly mounted on the inner wall of the connecting pipe (10), and the vertical cylinder (21) is plug-fitted with the inner support cylinder (14).

3. The biogas slurry return circulation system according to claim 2, characterized in that: A fixing ring (20) is fixedly mounted on the top cylinder body of the vertical cylinder (21), and the fixing ring (20) is fixedly mounted on the top surface of the inner support cylinder (14).

4. The biogas slurry return circulation system according to claim 1, characterized in that: The cross section of the connecting pipe (10) is L-shaped, and the height of the connecting pipe (10) is equal to the height of the biogas tank (1).

5. The biogas slurry return circulation system according to claim 1, characterized in that: A top cover (16) is hingedly connected to the top surface of the connecting pipe (10) via a hinge, and the top cover (16) is used for dust protection when closed.

6. The biogas slurry return circulation system according to claim 5, characterized in that: A handle (161) is fixedly mounted on the end of the top cover (16), and the handle (161) is used for opening and closing operations of the top cover (16).

7. The biogas slurry return circulation system according to claim 3, characterized in that: The size of the vertical tube (21) is compatible with the size of the inner support tube (14), and the bottom surface of the fixing ring (20) is tightly fitted with the top surface of the inner support tube (14) to ensure sealing.

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