Automatic pressure relief resource utilization device for biogas digester

Abstract

The utility model relates to the technical field of biogas digesters, and provides an automatic pressure relief resource utilization device for a biogas digester, which is used for being communicated with a pressure relief hole of the biogas digester for pressure relief. The pressure relief assembly is used for pressure relief of the biogas digester, the pressure relief assembly is characterized in that a floating pipe is movably arranged in a pressure relief hole, and after the floating pipe moves, the biogas digester is communicated with the pressure relief box or is not communicated with the pressure relief box; the filter assembly is arranged in the pressure relief box, and comprises a filter cartridge which is rotationally arranged in the pressure relief box and is used for filtering marsh gas overflowing after pressure relief; the driving piece drives the filter cartridge to rotate and is provided with a gear switch, and the floating pipe moves to drive the gear switch to be turned on or turned off. By means of the technical scheme, the problems that in the prior art, in the using process of a biogas digester, the internal pressure is possibly too large, and the biogas digester is possibly damaged, and potential safety hazards are caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of biogas tanks, and in particular to an automatic pressure relief resource utilization device for biogas tanks. Background Art

[0002] A biogas digester is a facility that produces biogas. Biogas is a combustible gas produced by the fermentation of organic matter in an anaerobic environment under certain temperature, humidity, and pH conditions through microbial fermentation. Since this gas was originally found in swamps, lakes, and ponds, it was named biogas. The main component of biogas is methane, followed by carbon dioxide, hydrogen sulfide, nitrogen, and some other components.

[0003] The construction of biogas digesters is an important way to change the rural environment. A biogas digester can usually be used for about 20 years. The comprehensive use of biogas digesters can not only save energy, improve and protect the environment, but also save fertilizers and pesticides, improve the yield and quality of crops, and promote and drive the development of the animal husbandry industry.

[0004] However, during use, the biogas digester may have the problem of excessive internal pressure, which may cause damage to the digester and cause safety hazards. At the same time, the biogas flowing out of the digester through the pressure relief equipment usually carries impurities such as moisture and sulfide. Direct use for household use or direct discharge will cause serious safety hazards or environmental pollution. Utility Model Content

[0005] The utility model provides an automatic pressure relief resource utilization device for a biogas tank, which solves the problem in the related art that a biogas tank may have excessive internal pressure during use, which may cause damage to the biogas tank and potential safety hazards.

[0006] The technical solution of the utility model is as follows: a biogas tank automatic pressure relief resource utilization device, which is used to communicate with the pressure relief hole of the biogas tank to relieve pressure, comprises:

[0007] A pressure relief box, used to communicate with the pressure relief hole;

[0008] A pressure relief component, used for relieving pressure in the biogas tank, comprising:

[0009] A floating pipe is movably arranged in the pressure relief hole, and after the floating pipe moves, the biogas tank and the pressure relief tank are connected or disconnected;

[0010] A filter assembly is arranged in the pressure relief tank, and the filter assembly comprises:

[0011] A filter cartridge is rotatably disposed in the pressure relief box and is used to filter the biogas overflowed by the pressure relief;

[0012] A driving member drives the filter cartridge to rotate. The driving member has a gear switch. After the floating tube moves, the gear switch is driven to open or close.

[0013] Optionally, there are a plurality of gear switches, each of which corresponds to a different power of the driving member, and the power corresponding to the gear switch close to the pressure relief tank is greater than the power corresponding to the gear switch far from the pressure relief tank.

[0014] Optionally, the floating tube has an elastic protrusion, and after the floating tube moves, the elastic protrusion abuts against or cancels the abutment with the gear switch.

[0015] Optionally, the floating pipe has a through hole, and after the floating pipe moves, the biogas tank and the pressure relief tank are connected or disconnected through the through hole.

[0016] Optionally, the pressure relief component further includes:

[0017] An adjusting plate is movably arranged in the pressure relief box, the adjusting plate is located above the floating tube, and the adjusting plate moves closer to or away from the floating tube;

[0018] An elastic member, one end of which acts on the adjustment plate and the other end of which acts on the floating tube, for providing elastic force for the floating tube to move toward the biogas tank;

[0019] An adjusting bolt is rotatably arranged on the pressure relief box and is threadably connected to the adjusting plate.

[0020] Optionally, the pressure relief tank has a drain port, and the filter assembly further comprises:

[0021] A sleeve, which is sleeved on the filter cartridge and has an air inlet, through which the filter cartridge and the pressure relief box are connected; the sleeve has a water outlet;

[0022] A drain pipe, connecting the water outlet and the drain port;

[0023] The baffle is movably arranged in the pressure relief box and is located between the end of the drain pipe and the drain outlet. After the baffle moves, it blocks or cancels the blocking of the drain outlet.

[0024] Optionally, it also includes:

[0025] A connecting piece connects the floating tube and the baffle, and the baffle rises and falls along with the floating tube.

[0026] Optionally, it also includes:

[0027] A first one-way valve is provided in each of the air inlets. When the biogas flows from the pressure relief tank to the filter cartridge, the first one-way valve opens.

[0028] Optionally, it also includes:

[0029] A collecting box is detachably arranged on one side of the pressure relief box, the collecting box has a collecting hole and an exhaust hole, and the collecting hole is communicated with the interior of the filter cartridge;

[0030] A collecting plate is movably arranged in the collecting box, and the collecting plate divides the collecting box into a collecting space and an exhaust space, the exhaust space is communicated with the exhaust hole, and the collecting space is communicated with the collecting hole.

[0031] Optionally, it also includes:

[0032] The second one-way valve is arranged in the collecting hole. When the biogas flows from the inside of the filter cartridge to the collecting space, the second one-way valve opens.

[0033] The working principle and beneficial effects of the utility model are:

[0034] In the utility model, when the biogas pressure in the biogas tank is relatively high, the floating tube is driven to move. After the floating tube moves, the pressure relief box is connected to the pressure relief hole to relieve the pressure of the biogas tank. The filter cartridge is used to filter the biogas entering the pressure relief box. After the floating tube moves, the driving member is turned on by the gear switch at the same time, so that when the biogas is introduced into the pressure relief box, the filter cartridge starts to rotate. The rotation of the filter cartridge improves the filtering effect of the biogas. While solving the safety problem that may be caused by excessive internal pressure in the biogas tank during use, it also improves the filtering effect of the biogas and resource utilization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0036] Figure 1 This is a schematic diagram of the top view structure of the utility model;

[0037] Figure 2 for Figure 1 AA cross-sectional structure diagram;

[0038] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB;

[0039] Figure 4 This is a schematic diagram of the internal structure of the pressure relief box of the utility model;

[0040] In the figure: 1. biogas tank; 101. pressure relief hole; 2. pressure relief box; 201. drain outlet; 3. pressure relief assembly; 301. float tube; 3011. elastic protrusion; 3012. through hole; 302. adjustment plate; 303. elastic member; 304. adjustment bolt; 4. filter assembly; 401. filter cartridge; 402. drive member; 4021. gear switch; 403. sleeve; 4031. water outlet; 4032. air inlet; 404. drain pipe; 405. baffle; 5. connector; 6. first one-way valve; 7. collection box; 701. collection hole; 702. exhaust hole; 8. collection plate; 9. second one-way valve. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0042] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0043] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0044] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0045] Example 1

[0046] Reference Figure 1~Figure 4, which is the first embodiment of the utility model, proposes an automatic pressure relief resource utilization device for a biogas tank, which is used to communicate with the pressure relief hole 101 of the biogas tank 1 for pressure relief, including: a pressure relief box 2, which is used to communicate with the pressure relief hole 101; a pressure relief component 3, which is used for pressure relief of the biogas tank 1, and the pressure relief component 3 includes: a floating tube 301, which is movably arranged in the pressure relief hole 101. After the floating tube 301 moves, the biogas tank 1 and the pressure relief box 2 are connected or disconnected; a filtering component 4, which is arranged in the pressure relief box 2, and the filtering component 4 includes: a filter cartridge 401, which is rotatably arranged in the pressure relief box 2, and is used to filter the biogas overflowed by pressure relief; a driving member 402, which drives the filter cartridge 401 to rotate, and the driving member 402 has a gear switch 4021. After the floating tube 301 moves, it drives the gear switch 4021 to be opened or closed.

[0047] In this embodiment, the biogas tank 1 is connected to the pressure relief box 2 through the pressure relief hole 101, and the floating tube 301 moves in the pressure relief hole 101 under the action of pressure. The filter cartridge 401 is used to filter the biogas entering the pressure relief box 2. Preferably, the driving member 402 is a driving motor, and the driving motor drives the filter cartridge 401 to rotate, and the biogas passes through the filter screen around the filter cartridge 401 and enters the inside of the filter cartridge 401;

[0048] Specifically, when the pressure of the biogas tank 1 is in a normal state, the floating tube 301 blocks the pressure relief hole 101, the pressure relief box 2 and the biogas tank 1 are not connected to each other, the driving member 402 is in a closed state, and the filter cartridge 401 is stationary and does not rotate. When the pressure of the biogas tank 1 is relatively high, the pressure pushes the floating tube 301 to move. After the floating tube 301 moves, the pressure relief hole 101 is no longer blocked and the driving member 402 is turned on through the gear switch 4021. The pressure relief box 2 is connected to the biogas tank 1, and biogas enters the pressure relief box 2 through the pressure relief hole 101. Synchronously, the driving member 402 drives the filter cartridge 401 to rotate, and the filter cartridge 401 rotates to filter the biogas entering the pressure relief box 2.

[0049] Through the above scheme, the float tube 301 moves when the biogas pressure becomes larger, and the drive member 402 is opened synchronously through the gear switch 4021 when the float tube 301 moves, so that the drive member 402 can automatically open when the float tube 301 moves according to the excessive biogas pressure, and automatically close when the float tube 301 is reset after the pressure relief is completed, thereby improving timeliness, adaptability and convenience, reducing the necessity of manual inspection or installation of other inspection components, and saving costs. The drive member 402 drives the filter cartridge 401 to rotate, and the filter cartridge 401 can drive the biogas inside the pressure relief box 2 to circulate after the rotation, thereby improving the flowability of the biogas and the filtering effect of the filter cartridge 401.

[0050] Furthermore, there are several gear switches 4021, and the several gear switches 4021 correspond to different powers of the driving member 402 respectively. The power corresponding to the gear switch 4021 close to the pressure relief box 2 is greater than the power corresponding to the gear switch 4021 far away from the pressure relief box 2.

[0051] In this embodiment, the gear switch 4021 corresponds to different powers of the driving member 402. When the power is greater, the rotation speed of the filter cartridge 401 is faster and the filtering efficiency is relatively greater. When the power gradually decreases, the rotation speed of the filter cartridge 401 gradually slows down and the filtering efficiency is relatively reduced.

[0052] Specifically, taking the driving member 402 having two gear switches 4021 as an example, the two gear switches 4021 correspond to different processing powers of the driving member 402, the gear switch 4021 close to the pressure relief box 2 corresponds to a larger power, and the gear switch 4021 far from the pressure relief box 2 corresponds to a smaller power. When the pressure in the biogas tank 1 is large and the speed is fast, the pressure on the floating tube 301 increases, and the moving distance is relatively far. The biogas flow entering the pressure relief box 2 through the pressure relief hole 101 is large, and the floating tube 301 drives the biogas near the pressure relief box 2 to move. 2 is turned on, corresponding to the larger power of the driving member 402. At this time, the rotation speed of the filter cartridge 401 is faster and the filtering effect is relatively better; when the pressure in the biogas tank 1 changes slowly, the pressure on the floating tube 301 is smaller and the moving distance is relatively short, which drives the gear switch 4021 away from the pressure relief tank 2 to turn on, corresponding to the smaller power of the driving member 402. At this time, the rotation speed of the filter cartridge 401 is slower, and the biogas flow rate entering the pressure relief tank 2 through the pressure relief hole 101 is smaller, and the filtering effect can be adapted to the biogas flow rate.

[0053] Through the above scheme, the rotation speed of the filter cartridge 401 and the driving power of the driving member 402 can be adaptively driven and filtered according to the excessive pressure of the biogas tank 1, and the biogas flow through the pressure relief hole 101, thereby improving the adaptability and effectively reducing the power waste caused by the driving member 402 always maintaining a high power or the excessive accumulation of biogas in the pressure relief box 2 caused by the driving member 402 maintaining a low power, and the problem of increased biogas pressure in the pressure relief box 2 caused by insufficient filtration efficiency of the filter cartridge 401.

[0054] Furthermore, the floating tube 301 has an elastic protrusion 3011 . After the floating tube 301 moves, the elastic protrusion 3011 abuts against or cancels the abutment with the gear switch 4021 .

[0055] In this embodiment, the floating tube 301 has an elastic protrusion 3011. After the floating tube 301 moves, the elastic protrusion 3011 abuts against a corresponding gear switch 4021, and the driving member 402 is started. After the elastic protrusion 3011 and the gear switch 4021 are no longer abutted, the gear switch 4021 is reset.

[0056] Furthermore, the floating pipe 301 has a through hole 3012 , and after the floating pipe 301 moves, the biogas tank 1 and the pressure relief tank 2 are connected or disconnected through the through hole 3012 .

[0057] In this embodiment, the through hole 3012 is arranged inside the floating tube 301. When the pressure in the biogas tank 1 remains normal, the through hole 3012 is located in the pressure relief hole 101, the pressure relief hole 101 blocks the through hole 3012, and the pressure relief box 2 and the biogas tank 1 are not connected to each other. When the floating tube 301 is moved by pressure, one end of the through hole 3012 enters the pressure relief box 2, and the pressure relief hole 101 stops blocking one end of the through hole 3012. At this time, the pressure relief box 2 and the biogas tank 1 are connected through the through hole 3012, and the biogas in the biogas tank 1 enters the pressure relief box 2 through the through hole 3012, thereby realizing the pressure relief of the biogas tank 1.

[0058] Furthermore, the pressure relief assembly 3 also includes: an adjusting plate 302, which is movably arranged in the pressure relief box 2, and the adjusting plate 302 is located above the floating tube 301. After the adjusting plate 302 moves, it approaches or moves away from the floating tube 301; an elastic member 303, one end of which acts on the adjusting plate 302 and the other end acts on the floating tube 301, and is used to provide elastic force for the floating tube 301 to move toward the biogas tank 1; an adjusting bolt 304, which is rotatably arranged on the pressure relief box 2 and is threadedly connected to the adjusting plate 302.

[0059] In this embodiment, a slide groove is provided in the pressure relief box 2, and the adjustment plate 302 is movably provided in the slide groove. The elastic member 303 connects the upper end of the floating tube 301 and the adjustment plate 302, and the adjustment bolt 304 is threadedly connected to the adjustment plate 302.

[0060] Specifically, when the pressure in the biogas tank 1 is relatively high, the floating tube 301 is pushed to move closer to the adjusting plate 302, and the elastic member 303 contracts. When the pressure is relieved, the elastic member 303 pushes the floating tube 301 to return to its original position. Preferably, the elastic member 303 is a compression spring. By rotating the adjusting bolt 304, the length of the elastic member 303 can be adjusted, and the elastic force of the elastic member 303 can be changed, thereby adapting to the pressure changes of different biogas tanks 1 and improving the adaptability.

[0061] Furthermore, the pressure relief box 2 has a drain port 201, and the filter assembly 4 also includes: a sleeve 403, which is sleeved on the filter cartridge 401 and has an air inlet 4032, and the filter cartridge 401 and the pressure relief box 2 are connected through the air inlet 4032; the sleeve 403 has a water outlet 4031; a drain pipe 404, which connects the water outlet 4031 and the drain port 201; a baffle 405, which is movably arranged in the pressure relief box 2 and is located between the end of the drain pipe 404 and the drain port 201, and the baffle 405 blocks or cancels the blocking of the drain port 201 after moving.

[0062] In this embodiment, when biogas is produced from the anaerobic fermentation device, it will carry a large amount of moisture. The sleeve 403 is sleeved on the outside of the filter cartridge 401. The biogas enters between the sleeve 403 and the filter cartridge 401 through the air inlet 4032, and is further filtered by the filter cartridge 401. After the filter cartridge 401 rotates, the sleeve 403 does not rotate with it. The centrifugal force of the rotation of the filter cartridge 401 throws the moisture of the biogas out, and the moisture enters the drain pipe 404 through the water outlet 4031 of the sleeve 403, and further flows out of the drain port 201. A collection device can be installed on the outside of the drain port 201 to collect the water and further utilize it. An oil baffle 405 is set between the drain pipe 404 and the drain port 201. After the baffle 405 moves, it blocks or cancels the blocking of the drain port 201.

[0063] Specifically, when the biogas pressure is relatively high and the float tube 301 moves and the pressure relief box 2 is connected to the biogas tank 1, the baffle 405 blocks the drain outlet 201, and the biogas can only enter the sleeve 403 at the air inlet 4032 and be filtered by the filter cartridge 401. When the biogas pressure is relieved, the baffle 405 stops blocking the drain outlet 201, and the water flows out at the drain outlet 201. When the baffle 405 blocks the drain outlet 201 and the filter cartridge 401 filters the biogas, the water separates and falls to the bottom of the sleeve 403, blocking the drain outlet 201, so that the biogas gas that is insoluble in water rises upward. During the drainage process, water will be discharged first, which reduces the biogas discharge to a certain extent.

[0064] Furthermore, it also includes: a connecting member 5 connecting the floating tube 301 and the baffle 405, and the baffle 405 rises and falls with the floating tube 301.

[0065] In this embodiment, the baffle 405 follows the rise and fall of the floating tube 301. After the floating tube 301 moves upward under pressure, the baffle 405 moves along to block the drain outlet 201. After the pressure is released and the floating tube 301 moves downward, the baffle 405 stops blocking the drain outlet 201.

[0066] Furthermore, it also includes: a first one-way valve 6. Each air inlet 4032 is provided with a first one-way valve 6. When the biogas flows from the pressure relief tank 2 to the filter cartridge 401, the first one-way valve 6 opens.

[0067] In this embodiment, a one-way valve is provided in each air inlet 4032 . When the biogas flows from the pressure relief tank 2 to the filter cartridge 401 , the first one-way valve 6 opens, so that the biogas can be fully filtered in the sleeve 403 .

[0068] Furthermore, it also includes: a collecting box 7, which is detachably arranged on one side of the pressure relief box 2, the collecting box 7 has a collecting hole 701 and an exhaust hole 702, and the collecting hole 701 is connected to the inside of the filter cartridge 401; a collecting plate 8, which is movably arranged in the collecting box 7, and the collecting plate 8 divides the collecting box 7 into a collecting space and an exhaust space, the exhaust space is connected to the exhaust hole 702, and the collecting space is connected to the collecting hole 701.

[0069] In this embodiment, in order to collect and use the filtered biogas, a collection box 7 is designed. Specifically, biogas enters the filter cartridge 401 after being filtered by the filter cartridge 401, and further enters the collection space through the collection hole 701. As the biogas gradually increases, the volume increases, and the pressure increases, the collection plate 8 moves under the action of pressure, and the collection space gradually increases to accommodate more volume of biogas, and the exhaust space gradually decreases. The air in the exhaust space is squeezed out of the exhaust hole 702 through the movement of the collection plate 8, thereby effectively increasing the concentration of the collected biogas and improving the collection quality. The collection box 7 is detachably connected, and the collection box 7 can be disassembled and transported after the collection is completed.

[0070] Furthermore, it also includes: a second one-way valve 9, which is arranged in the collecting hole 701, and when the biogas flows from the inside of the filter cartridge 401 to the collecting space, the second one-way valve 9 opens.

[0071] In this embodiment, a second one-way valve 9 is provided in the collection hole 701, which can prevent the biogas from flowing back into the pressure relief box 2 after entering the collection space, thereby preventing the biogas from flowing back or reflux, thereby ensuring the purity and safety of the collected gas.

[0072] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A biogas tank automatic pressure relief resource utilization device, used for communicating with a pressure relief hole (101) of a biogas tank (1) for pressure relief, characterized in that: include: A pressure relief box (2), used for communicating with the pressure relief hole (101); A pressure relief component (3) is used for relieving pressure in the biogas tank (1), and the pressure relief component (3) comprises: A floating pipe (301) is movably arranged in the pressure relief hole (101); after the floating pipe (301) moves, the biogas tank (1) and the pressure relief tank (2) are connected or disconnected; A filter assembly (4) is arranged in the pressure relief box (2), and the filter assembly (4) comprises: A filter cartridge (401) is rotatably disposed in the pressure relief box (2) and is used to filter the biogas overflowed by the pressure relief; The driving member (402) drives the filter cartridge (401) to rotate. The driving member (402) has a gear switch (4021). After the floating tube (301) moves, it drives the gear switch (4021) to open or close.

2. The biogas tank automatic pressure relief resource utilization device according to claim 1 is characterized in that: There are a plurality of the gear switches (4021), and the plurality of the gear switches (4021) respectively correspond to different powers of the driving member (402), and the power corresponding to the gear switch (4021) close to the pressure relief box (2) is greater than the power corresponding to the gear switch (4021) far from the pressure relief box (2).

3. The biogas tank automatic pressure relief resource utilization device according to claim 1 is characterized in that: The floating tube (301) has an elastic protrusion (3011), and after the floating tube (301) moves, the elastic protrusion (3011) abuts against or cancels the abutment with the gear switch (4021).

4. The biogas tank automatic pressure relief resource utilization device according to claim 1 is characterized in that: The floating pipe (301) has a through hole (3012), and after the floating pipe (301) moves, the biogas tank (1) and the pressure relief tank (2) are connected or disconnected through the through hole (3012).

5. The biogas tank automatic pressure relief resource utilization device according to claim 1 is characterized in that: The pressure relief component (3) further comprises: an adjusting plate (302) movably arranged in the pressure relief box (2), the adjusting plate (302) being located above the floating tube (301), and the adjusting plate (302) moving closer to or farther away from the floating tube (301); An elastic member (303), one end of which acts on the adjustment plate (302) and the other end of which acts on the floating tube (301), for providing elastic force for the floating tube (301) to move toward the biogas tank (1); An adjusting bolt (304) is rotatably disposed on the pressure relief box (2) and is threadedly connected to the adjusting plate (302).

6. The biogas tank automatic pressure relief resource utilization device according to claim 1 is characterized in that: The pressure relief box (2) has a water outlet (201), and the filter assembly (4) further comprises: A sleeve (403) is sleeved on the filter cartridge (401) and has an air inlet (4032), and the filter cartridge (401) and the pressure relief box (2) are connected via the air inlet (4032); the sleeve (403) has a water outlet (4031); A drainage pipe (404) connecting the water outlet (4031) and the drainage outlet (201); The baffle (405) is movably arranged in the pressure relief box (2) and is located between the end of the drain pipe (404) and the drain outlet (201). After the baffle (405) moves, it blocks or cancels the blocking of the drain outlet (201).

7. The biogas tank automatic pressure relief resource utilization device according to claim 6 is characterized in that: Also includes: A connecting member (5) connects the floating tube (301) and the baffle (405), and the baffle (405) rises and falls along with the floating tube (301).

8. The biogas tank automatic pressure relief resource utilization device according to claim 6 is characterized in that: Also includes: A first one-way valve (6), each of the air inlets (4032) is provided with the first one-way valve (6), and when the biogas flows from the pressure relief tank (2) to the filter cartridge (401), the first one-way valve (6) opens.

9. The biogas tank automatic pressure relief resource utilization device according to claim 1, characterized in that: Also includes: A collecting box (7) is detachably arranged on one side of the pressure relief box (2), the collecting box (7) having a collecting hole (701) and an exhaust hole (702), the collecting hole (701) being in communication with the interior of the filter cartridge (401); A collecting plate (8) is movably arranged in the collecting box (7), and the collecting plate (8) divides the collecting box (7) into a collecting space and an exhaust space, wherein the exhaust space is connected to the exhaust hole (702), and the collecting space is connected to the collecting hole (701).

10. The biogas tank automatic pressure relief resource utilization device according to claim 9, characterized in that: Also includes: The second one-way valve (9) is arranged in the collecting hole (701), and when the biogas flows from the inside of the filter cartridge (401) to the collecting space, the second one-way valve (9) opens.

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