Feces fermentation device
Patent Information
- Application Number
- CN202522388411.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-11-11
AI Technical Summary
[0003]本实用新型的目的在于提供一种粪污发酵装置，以解决上述背景技术中现有搅拌发酵罐在发酵时，罐内氧气浓度难以精准维持在适宜区间，常出现局部供氧过剩或不足的情况，进而影响好氧微生物活性，造成粪污发酵不彻底、腐熟周期延长的问题
第一、本实用新型通过将动物污粪投入搅拌发酵罐内，通过搅拌发酵罐对污粪进行搅拌发酵，在发酵过程中，工作人员通过补气管向氧气仓内部加入氧气，通过补液管向液仓内加入微生物菌剂稀释液，通过开启抽气泵，通过抽气泵抽取搅拌发酵罐内的废气，废气通过送气管后送入置换仓的内部，废气通过送气管进入后推动活塞朝向回气管的一侧进行滑动，氧气仓内的氧气通过氧气管进入置换仓内，通过活塞挤压置换仓内氧气一侧，氧气冲破回气管内压力单向阀的阈值后，通过回气管直接进入搅拌发酵罐内底部的物料内，同时，置换仓通过废气管连接废气仓，且废气管内部的第二定时单向阀与氧气管内部的第三定时单向阀开启与关闭时间相同，当第一定时单向阀关闭时，第二定时单向阀与第三定时单向阀开启，此时通过氧气的再次注入从而使活塞复位以便于下次第一定时单向阀开启后，废气与氧气的等量置换，通过上述技术方案，通过置换仓的置换维持搅拌发酵罐内的压力平衡，搅拌发酵罐内废气抽取与氧气补给同步，既主动排出发酵过程中产生的氨气、硫化氢等恶臭气体及过量二氧化碳，同时补充好氧微生物代谢所需的氧气，形成污染物排出与代谢底物补给的闭环，优化发酵环境，避免搅拌发酵罐内局部厌氧或氧气匮乏导致的发酵停滞，使好氧微生物活性持续处于峰值状态，加速粪污中大分子有机物的分解，缩短发酵周期，同时减少厌氧腐败产生的有害代谢物，提升成品有机肥的有机质含量与安全性，降低病原菌残留风险。
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Figure CN224783993U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of animal husbandry technology, specifically to a manure fermentation device. Background Technology
[0002] Livestock manure fermentation equipment is a device specifically designed to treat waste such as manure and urine generated during livestock and poultry farming. It uses microorganisms to decompose and transform these organic wastes, achieving harmless, reduced-volume, and resource-based treatment. The stirred fermentation tank uses mechanical stirring to fully mix manure and microbial agents, providing a suitable living environment for microorganisms and promoting the efficient aerobic fermentation process. In existing stirred fermentation tanks, it is difficult to precisely maintain the oxygen concentration within the appropriate range during fermentation, often resulting in localized oversupply or undersupply of oxygen. This affects the activity of aerobic microorganisms, leading to incomplete fermentation of manure and a prolonged composting period. Utility Model Content
[0003] The purpose of this invention is to provide a manure fermentation device to solve the problem that in the existing stirred fermentation tanks mentioned above, the oxygen concentration inside the tank is difficult to maintain precisely within a suitable range during fermentation, and there are often local cases of excessive or insufficient oxygen supply, which in turn affects the activity of aerobic microorganisms, resulting in incomplete manure fermentation and prolonged composting period.
[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a manure fermentation device, including a stirred fermentation tank, a replacement component is provided on one side of the stirred fermentation tank, and a treatment component is provided on one side of the stirred fermentation tank; The replacement assembly includes a replacement chamber, and springs are fixedly connected to both sides of the inner wall of the replacement chamber. Pistons are fixedly connected to one side of the outer surface of the two sets of springs. A return gas pipe is provided inside the replacement chamber, and the end of the return gas pipe away from the replacement chamber is located inside the stirred fermentation tank. The treatment component includes a waste gas chamber, and the interior of the waste gas chamber is provided with a layer of biological ceramic particles and an activated carbon layer. A liquid chamber is fixedly connected to one side of the outer surface of the waste gas chamber. The liquid chamber is connected to the waste gas chamber through a first liquid delivery pipe and is connected to a stirred fermentation tank through a second liquid delivery pipe.
[0005] Preferably, an air pump is fixedly connected to the outer surface of the stirred fermenter, and an air delivery pipe is provided inside the air pump. The end of the air delivery pipe away from the air pump is located inside the replacement chamber, and a first timed one-way valve is provided inside the air delivery pipe.
[0006] Preferably, the replacement chamber is provided with an exhaust gas pipe, and the end of the exhaust gas pipe away from the exhaust gas chamber is located inside the exhaust gas chamber. The exhaust gas pipe is provided with a second timed one-way valve.
[0007] Preferably, a liquid pump is fixedly connected to one side of the outer surface of the liquid tank, a liquid replenishment pipe is fixedly connected to one side of the outer surface of the liquid tank, and an exhaust pipe is fixedly connected to one side of the outer surface of the waste gas tank.
[0008] Preferably, the replacement chamber is equipped with an oxygen pipe inside, and the end of the oxygen pipe away from the replacement chamber is fixedly connected to an oxygen chamber. The oxygen pipe is equipped with a third timed one-way valve inside, and a gas supply pipe is fixedly connected to the top of the outer surface of the oxygen chamber.
[0009] Preferably, the return gas pipe is equipped with a pressure check valve inside, and the replacement chamber is fixedly connected to the outer surface of the stirred fermentation tank.
[0010] Compared with the prior art, the beneficial effects achieved by this utility model are: First, this utility model involves feeding animal manure into a stirred fermentation tank, where the manure is stirred and fermented. During fermentation, workers add oxygen to the oxygen chamber through an air supply pipe and add diluted microbial agent to the liquid chamber through a liquid supply pipe. An air pump is activated to extract waste gas from the stirred fermentation tank. This waste gas is then sent into the replacement chamber through an air supply pipe. Upon entering through the air supply pipe, the waste gas pushes a piston towards the return air pipe. Oxygen from the oxygen chamber enters the replacement chamber through an oxygen pipe. The piston compresses the oxygen in the replacement chamber, causing it to exceed the threshold of the pressure check valve in the return air pipe, and then directly enters the material at the bottom of the stirred fermentation tank through the return air pipe. Simultaneously, the replacement chamber is connected to the waste gas chamber via a waste gas pipe. The second timed check valve inside the waste gas pipe and the third timed check valve inside the oxygen pipe open and close at the same time. When the first timed check valve closes... At this time, the second and third timed one-way valves open, and the piston is reset by the re-injection of oxygen so that the waste gas and oxygen can be replaced equally after the first timed one-way valve opens next time. Through the above technical solution, the pressure balance in the stirred fermentation tank is maintained by the replacement chamber. The waste gas extraction and oxygen supply in the stirred fermentation tank are synchronized, which not only actively removes malodorous gases such as ammonia and hydrogen sulfide and excess carbon dioxide generated during fermentation, but also replenishes the oxygen required for aerobic microbial metabolism, forming a closed loop of pollutant discharge and metabolic substrate supply, optimizing the fermentation environment, avoiding fermentation stagnation caused by local anaerobic or oxygen deficiency in the stirred fermentation tank, keeping the activity of aerobic microorganisms at its peak, accelerating the decomposition of large molecular organic matter in manure, shortening the fermentation cycle, reducing harmful metabolites produced by anaerobic putrefaction, increasing the organic matter content and safety of the finished organic fertilizer, and reducing the risk of pathogen residues.
[0011] Secondly, in this invention, when the waste gas in the replacement chamber enters the waste gas chamber through the waste gas pipe, the liquid pump is activated to extract the diluted microbial agent from the liquid chamber. The diluted microbial agent enters the waste gas chamber through the first liquid delivery pipe and is then sprayed out through multiple nozzles. At this time, the waste gas entering the waste gas chamber is adsorbed onto the surface of the biological ceramic particle layer and the activated carbon layer. The diluted microbial agent treats the waste gas extracted from the stirred fermentation tank. Furthermore, the diluted microbial agent enters the stirred fermentation tank through the second liquid delivery pipe to replenish the functional microbial community required for fermentation. Through the above technical solution, the lower biological ceramic particle layer in the waste gas chamber, with its high porosity and rough surface, provides a stable attachment carrier for the microbial agent, forming a biofilm for long-term degradation of pollutants in the waste gas. The upper activated carbon layer, through microporous structures... The system rapidly captures undegraded residual pollutants, achieving layered interception and step-by-step purification, improving the removal efficiency of odorous pollutants, and ensuring that emitted gases meet environmental standards. The diluted microbial agent is sprayed inside the waste gas chamber to maintain the humidity and activity of the carrier layer and enhance the waste gas purification effect. It is also simultaneously introduced into the stirred fermentation tank to supplement the functional bacteria required for fermentation, so that waste gas treatment and manure fermentation form a synergistic effect. The deodorizing bacteria in the waste gas chamber purify pollutants from the end, while the functional bacteria in the stirred fermentation tank reduce pollutant generation from the source. Furthermore, the diluted agent introduced into the stirred fermentation tank forms a synergistic effect with oxygen. The introduced oxygen activates the metabolic activity of aerobic bacteria in the agent, accelerating the decomposition of manure. At the same time, the increased activity of bacteria in the stirred fermentation tank further reduces pollutant generation, thereby reducing the concentration of treated waste gas and making purification less difficult. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the present utility model; Figure 3 This is a schematic diagram of the internal three-dimensional structure of the waste gas chamber of this utility model; Figure 4 This is a schematic diagram of the internal three-dimensional structure of the replacement chamber of this utility model.
[0013] The components include: 1. Stirred fermentation tank; 2. Air pump; 201. Air supply pipe; 202. First timed one-way valve; 3. Replacement chamber; 301. Piston; 302. Spring; 303. Return air pipe; 4. Waste gas chamber; 401. Waste gas pipe; 402. Second timed one-way valve; 403. Activated carbon layer; 404. Bio-ceramic granule layer; 405. Air outlet pipe; 5. Liquid chamber; 501. Liquid pump; 502. First liquid supply pipe; 503. Second liquid supply pipe; 504. Liquid replenishment pipe; 6. Oxygen chamber; 601. Oxygen pipe; 602. Third timed one-way valve; 603. Air replenishment pipe. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0015] Please see Figures 1-4 A manure fermentation device includes a stirred fermentation tank 1, a replacement component is provided on one side of the stirred fermentation tank 1, and a treatment component is provided on one side of the stirred fermentation tank 1. The replacement assembly includes a replacement chamber 3, and springs 302 are fixedly connected to both sides of the inner wall of the replacement chamber 3. Pistons 301 are fixedly connected to one side of the outer surface of the two sets of springs 302. A return gas pipe 303 is provided inside the replacement chamber 3, and the end of the return gas pipe 303 away from the replacement chamber 3 is located inside the stirred fermentation tank 1. The treatment component includes a waste gas chamber 4, and the interior of the waste gas chamber 4 is provided with a biological ceramic particle layer 404 and an activated carbon layer 403. A liquid chamber 5 is fixedly connected to one side of the outer surface of the waste gas chamber 4. The liquid chamber 5 is connected to the waste gas chamber 4 through a first liquid delivery pipe 502 and to the stirred fermentation tank 1 through a second liquid delivery pipe 503.
[0016] Using the above technical solution, animal manure is put into the stirred fermentation tank 1, where it is stirred and fermented. During fermentation, oxygen is added to the oxygen chamber 6 through the air supply pipe 603, and diluted microbial agent is added to the liquid chamber 5 through the liquid supply pipe 504. The exhaust pump 2 is turned on to extract the waste gas from the stirred fermentation tank 1. The waste gas is then sent into the replacement chamber 3 through the air supply pipe 201. After entering through the air supply pipe 201, the waste gas pushes the piston 301 towards... Sliding to one side of the return gas pipe 303, oxygen in the oxygen chamber 6 enters the replacement chamber 3 through the oxygen pipe 601. The piston 301 compresses the oxygen in the replacement chamber 3, causing it to break through the threshold of the pressure check valve in the return gas pipe 303 and directly enter the material at the bottom of the stirred fermentation tank 1 through the return gas pipe 303. Simultaneously, the replacement chamber 3 is connected to the waste gas chamber 4 through the waste gas pipe 401, and the second timed check valve 402 inside the waste gas pipe 401 and the third timed check valve 602 inside the oxygen pipe 601 are open. The opening and closing times are the same. When the first timed one-way valve 202 is closed, the second timed one-way valve 402 and the third timed one-way valve 602 are opened. At this time, the piston 301 is reset by the re-injection of oxygen so that the waste gas and oxygen can be replaced equally after the first timed one-way valve 202 is opened next time. Through the above technical solution, the pressure balance in the stirred fermentation tank 1 is maintained by the replacement chamber 3. The waste gas extraction and oxygen supply in the stirred fermentation tank 1 are synchronized. It actively discharges the malodorous gases such as ammonia and hydrogen sulfide and excess carbon dioxide generated during the fermentation process, and at the same time replenishes the oxygen required for the metabolism of aerobic microorganisms, forming a closed loop of pollutant discharge and metabolic substrate supply. This optimizes the fermentation environment, avoids fermentation stagnation caused by local anaerobic or oxygen deficiency in the stirred fermentation tank 1, keeps the activity of aerobic microorganisms at its peak, accelerates the decomposition of large molecular organic matter in the manure, shortens the fermentation cycle, reduces harmful metabolites produced by anaerobic putrefaction, increases the organic matter content and safety of the finished organic fertilizer, and reduces the risk of pathogen residues.
[0017] Through the above technical solution, when the waste gas in the replacement chamber 3 enters the waste gas chamber 4 through the waste gas pipe 401, the liquid pump 501 is turned on to extract the diluted microbial agent from the liquid chamber 5. The diluted microbial agent enters the waste gas chamber 4 through the first liquid delivery pipe 502 and is then sprayed out through multiple nozzles. At this time, the waste gas entering the waste gas chamber 4 is adsorbed onto the surfaces of the biological ceramic particle layer 404 and the activated carbon layer 403. The diluted microbial agent treats the waste gas extracted from the stirred fermentation tank 1. Furthermore, the diluted microbial agent enters the stirred fermentation tank 1 through the second liquid delivery pipe 503 to replenish the functional microbial community required for fermentation in the stirred fermentation tank 1. Through this technical solution, the lower biological ceramic particle layer 404 in the waste gas chamber 4, with its high porosity and rough surface, provides a stable attachment carrier for the microbial agent, forming a biofilm for long-term degradation of pollutants in the waste gas. The upper activated carbon layer 403 rapidly captures undegraded residual pollutants through its microporous structure, achieving layered interception and step-by-step purification, improving the removal efficiency of odorous pollutants, and ensuring that the emitted gas meets environmental protection standards. The diluted microbial agent is used for spraying inside the waste gas chamber 4 to maintain the humidity and activity of the carrier layer and enhance the waste gas purification effect. It is also simultaneously introduced into the stirred fermentation tank 1 to supplement the functional microbial community required for fermentation, so that waste gas treatment and manure fermentation form a synergistic microbial community. The deodorizing microbial community in the waste gas chamber 4 purifies pollutants from the end, while the functional microbial community in the stirred fermentation tank 1 reduces the generation of pollutants from the source. The diluted microbial agent introduced into the stirred fermentation tank 1 forms a synergistic effect with oxygen. The introduced oxygen activates the metabolic activity of aerobic microbial communities in the microbial agent, accelerating the maturation of manure. At the same time, the increased activity of microbial communities in the stirred fermentation tank 1 further reduces the generation of pollutants, thereby reducing the concentration of treated waste gas and reducing the difficulty of purification.
[0018] Specifically, an air pump 2 is fixedly connected to the outer surface of the stirred fermentation tank 1, and an air supply pipe 201 is installed inside the air pump 2. The end of the air supply pipe 201 away from the air pump 2 is installed inside the replacement chamber 3, and a first timed one-way valve 202 is installed inside the air supply pipe 201.
[0019] Through the above technical solution, the exhaust gas in the stirred fermentation tank 1 is extracted by the air pump 2, and the exhaust gas is sent into the interior of the replacement chamber 3 through the air supply pipe 201.
[0020] Specifically, the interior of the replacement chamber 3 is equipped with an exhaust pipe 401, and the end of the exhaust pipe 401 away from the exhaust chamber 4 is located inside the exhaust chamber 4. The interior of the exhaust pipe 401 is equipped with a second timed one-way valve 402.
[0021] Through the above technical solution, the waste gas in the replacement chamber 3 enters the interior of the waste gas chamber 4 through the waste gas pipe 401.
[0022] Specifically, a liquid pump 501 is fixedly connected to one side of the outer surface of the liquid tank 5, a liquid replenishment pipe 504 is fixedly connected to one side of the outer surface of the liquid tank 5, and an exhaust pipe 405 is fixedly connected to one side of the outer surface of the waste gas tank 4.
[0023] The above technical solution involves adding microbial agent diluent to the liquid tank 5 through the replenishment pipe 504, extracting the microbial agent diluent from the liquid tank 5 through the pump 501, and discharging gas through the vent pipe 405.
[0024] Specifically, an oxygen pipe 601 is installed inside the replacement chamber 3, and an oxygen chamber 6 is fixedly connected to the end of the oxygen pipe 601 away from the replacement chamber 3. A third timed one-way valve 602 is installed inside the oxygen pipe 601, and a gas supply pipe 603 is fixedly connected to the top of the outer surface of the oxygen chamber 6.
[0025] Using the above technical solution, staff add oxygen into the oxygen chamber 6 through the gas supply pipe 603, and the oxygen in the oxygen chamber 6 enters the replacement chamber 3 through the oxygen pipe 601.
[0026] Specifically, the return gas pipe 303 is equipped with a pressure check valve inside, and the displacement chamber 3 is fixedly connected to the outer surface of the stirred fermentation tank 1.
[0027] Through the above technical solution, after the oxygen breaks through the threshold of the one-way valve in the return gas pipe 303, it directly enters the material at the bottom of the stirred fermentation tank 1 through the return gas pipe 303.
[0028] During use, animal manure is placed into the mixing fermentation tank 1, where it is stirred and fermented. During fermentation, oxygen is added to the oxygen chamber 6 via the air supply pipe 603, and diluted microbial agent is added to the liquid chamber 5 via the liquid supply pipe 504. The exhaust pump 2 is activated to extract waste gas from the mixing fermentation tank 1. This waste gas is then sent into the replacement chamber 3 via the air supply pipe 201. Upon entering through the air supply pipe 201, the waste gas pushes the piston 301 towards the return air direction. One side of pipe 303 slides, and oxygen in oxygen chamber 6 enters replacement chamber 3 through oxygen pipe 601. Piston 301 compresses the oxygen in replacement chamber 3, causing it to break through the threshold of the pressure check valve in return pipe 303, and then directly enter the material at the bottom of the stirred fermentation tank 1 through return pipe 303. Simultaneously, replacement chamber 3 is connected to waste gas chamber 4 via waste gas pipe 401, and the second timed check valve 402 inside waste gas pipe 401 and the third timed check valve 602 inside oxygen pipe 601 are open and closed. With the same closing time, when the first timed one-way valve 202 closes, the second timed one-way valve 402 and the third timed one-way valve 602 open. At this time, the piston 301 is reset by the re-injection of oxygen so that when the first timed one-way valve 202 opens again, the waste gas and oxygen are replaced in equal amounts. Through the above technical solution, the pressure balance in the stirred fermentation tank 1 is maintained by the replacement chamber 3. The waste gas extraction and oxygen supply in the stirred fermentation tank 1 are synchronized. It actively discharges malodorous gases such as ammonia and hydrogen sulfide and excess carbon dioxide generated during the fermentation process, while replenishing the oxygen required for aerobic microbial metabolism. This forms a closed loop of pollutant discharge and metabolic substrate supply, optimizes the fermentation environment, avoids fermentation stagnation caused by local anaerobic or oxygen deficiency in the stirred fermentation tank 1, keeps the activity of aerobic microorganisms at its peak, accelerates the decomposition of large molecular organic matter in the manure, shortens the fermentation cycle, reduces harmful metabolites produced by anaerobic putrefaction, increases the organic matter content and safety of the finished organic fertilizer, and reduces the risk of pathogen residues. When the waste gas in the replacement chamber 3 enters the waste gas chamber 4 through the waste gas pipe 401, the liquid pump 501 is activated to extract the diluted microbial agent from the liquid chamber 5. The diluted microbial agent then enters the waste gas chamber 4 through the first liquid delivery pipe 502 and is sprayed out through multiple nozzles. At this time, the waste gas entering the waste gas chamber 4 is adsorbed onto the surfaces of the biological ceramic particle layer 404 and the activated carbon layer 403. The diluted microbial agent treats the waste gas extracted from the stirred fermentation tank 1. Furthermore, the diluted microbial agent enters the stirred fermentation tank 1 through the second liquid delivery pipe 503 to replenish the functional microbial community required for fermentation. Through this technical solution, the lower biological ceramic particle layer 404 in the waste gas chamber 4, with its high porosity and rough surface, provides a stable attachment carrier for the microbial agent, forming a biofilm for long-term degradation of pollutants in the waste gas. The upper activated carbon layer... The activated carbon layer 403 rapidly captures undegraded residual pollutants through its microporous structure, achieving layered interception and step-by-step purification, improving the removal efficiency of odorous pollutants, and ensuring that the emitted gas meets environmental protection standards. The diluted microbial agent is sprayed inside the waste gas chamber 4 to maintain the humidity and activity of the carrier layer and enhance the waste gas purification effect. It is also simultaneously introduced into the stirred fermentation tank 1 to supplement the functional microbial community required for fermentation, so that waste gas treatment and manure fermentation form a synergistic microbial community. The deodorizing microbial community in the waste gas chamber 4 purifies pollutants from the end, while the functional microbial community in the stirred fermentation tank 1 reduces the generation of pollutants from the source. Furthermore, the diluted microbial agent introduced into the stirred fermentation tank 1 forms a synergistic effect with oxygen. The introduced oxygen activates the metabolic activity of aerobic microbial communities in the microbial agent, accelerating the maturation of manure. At the same time, the increased activity of microbial communities in the stirred fermentation tank 1 further reduces the generation of pollutants, thereby reducing the concentration of treated waste gas and making purification less difficult.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A manure fermentation device, comprising a stirred fermentation tank (1), characterized in that: A replacement component is provided on one side of the stirred fermentation tank (1), and a processing component is provided on one side of the stirred fermentation tank (1). The replacement assembly includes a replacement chamber (3), and springs (302) are fixedly connected to both sides of the inner wall of the replacement chamber (3). Pistons (301) are fixedly connected to one side of the outer surface of the two sets of springs (302). A return gas pipe (303) is provided inside the replacement chamber (3), and the end of the return gas pipe (303) away from the replacement chamber (3) is located inside the stirred fermentation tank (1). The treatment component includes a waste gas chamber (4), and the interior of the waste gas chamber (4) is provided with a biological ceramic particle layer (404). The interior of the waste gas chamber (4) is provided with an activated carbon layer (403). A liquid chamber (5) is fixedly connected to one side of the outer surface of the waste gas chamber (4). The liquid chamber (5) is connected to the waste gas chamber (4) through a first liquid delivery pipe (502). The liquid chamber (5) is connected to the stirred fermentation tank (1) through a second liquid delivery pipe (503).
2. The manure fermentation device according to claim 1, characterized in that: An air pump (2) is fixedly connected to the outer surface of the stirred fermentation tank (1), and an air supply pipe (201) is provided inside the air pump (2). The end of the air supply pipe (201) away from the air pump (2) is located inside the replacement chamber (3), and a first timed one-way valve (202) is provided inside the air supply pipe (201).
3. The manure fermentation device according to claim 1, characterized in that: The replacement chamber (3) is provided with an exhaust pipe (401), and the end of the exhaust pipe (401) away from the exhaust chamber (4) is located inside the exhaust chamber (4). The exhaust pipe (401) is provided with a second timed one-way valve (402).
4. The manure fermentation device according to claim 1, characterized in that: A liquid pump (501) is fixedly connected to one side of the outer surface of the liquid tank (5), a liquid replenishment pipe (504) is fixedly connected to one side of the outer surface of the liquid tank (5), and an exhaust pipe (405) is fixedly connected to one side of the outer surface of the waste gas tank (4).
5. The manure fermentation device according to claim 1, characterized in that: The replacement chamber (3) is provided with an oxygen pipe (601), and the end of the oxygen pipe (601) away from the replacement chamber (3) is fixedly connected to an oxygen chamber (6). The oxygen pipe (601) is provided with a third timed one-way valve (602), and the top of the outer surface of the oxygen chamber (6) is fixedly connected to a gas supply pipe (603).
6. The manure fermentation device according to claim 1, characterized in that: The return gas pipe (303) is equipped with a pressure check valve inside, and the replacement chamber (3) is fixedly connected to the outer surface of the stirred fermentation tank (1).