Pressure adjusting device for biogas digester
By designing a pressure relief chamber and a pressure regulating device for the treatment components in the biogas digester, the problems of inflexible pressure regulation and pressure relief pollution in the biogas digester are solved, achieving safe and effective biogas treatment and improving safety and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI RONGHUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-01
AI Technical Summary
Existing biogas digester pressure relief devices cannot flexibly adjust the pressure, and the direct discharge of biogas after pressure relief leads to environmental pollution and harm to human health.
A pressure regulating device including a pressure relief chamber, a treatment component, and a pressurizing component was designed. The device automatically relieves pressure and treats the biogas using the treatment component, thus avoiding direct emission.
It achieves stable regulation and treatment of biogas digester pressure, avoids environmental pollution and harm to human health, and improves safety in use.
Smart Images

Figure CN224186143U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biogas digester technology, specifically a pressure regulating device for biogas digesters. Background Technology
[0002] Biogas, as a clean and renewable energy source, plays an important role in rural energy supply. However, during use, the internal pressure of a biogas digester gradually increases due to the continuous production of biogas. If the internal pressure becomes too high, it can damage the biogas digester and even cause safety hazards. For example, when the biogas pressure inside the digester exceeds a certain limit, it may cause the digester structure to rupture, resulting in biogas leakage. This not only wastes energy but may also lead to accidents such as fires and explosions.
[0003] Currently, there are some biogas digester pressure relief devices on the market, but most of these devices only have simple pressure relief functions and cannot effectively treat the biogas discharged after pressure relief.
[0004] On the one hand, some pressure relief devices release biogas directly into the atmosphere during the pressure relief process, causing environmental pollution. The main component of biogas is methane, a greenhouse gas with a stronger greenhouse effect than carbon dioxide. The release of large amounts of untreated biogas into the atmosphere will exacerbate global warming. At the same time, biogas may also contain harmful gases such as hydrogen sulfide. Hydrogen sulfide has a strong, pungent odor and is harmful to human health. Long-term exposure to low concentrations of hydrogen sulfide can cause conjunctivitis, rhinitis, bronchitis, and other diseases, while high concentrations can lead to poisoning or even death.
[0005] Therefore, a pressure regulating device for biogas digesters is proposed to solve the above problems. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a pressure regulating device for biogas digesters, which has the advantages of automatic pressure relief and the ability to treat the biogas discharged after pressure relief. It solves the problems of insufficient pressure relief flexibility of existing pressure relief devices and the pollution of the environment and harm to human health caused by the discharged biogas.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a pressure regulating device for a biogas digester, comprising a connecting seat, a pressure relief chamber for installation on the connecting seat, a protective mounting shell on the top of the pressure relief chamber, a pressure regulating component for pressure relief inside the mounting shell, and a protective cover on the top of the mounting shell.
[0008] The top of the connecting seat is provided with a pressure relief port, which is located inside the pressure relief chamber. A connection port is provided on one side of the pressure relief chamber, and the connection port is connected to a processing component for treating biogas.
[0009] The processing assembly includes a processing chamber for processing biogas, a connection port for communicating with a docking interface, an exhaust port for venting gas at the bottom of the processing chamber, a storage chamber for storing processing chemicals on the processing chamber, a pressurizing component at the top of the storage chamber, and a nozzle at the bottom of the storage chamber, the nozzle being located inside the processing chamber.
[0010] Furthermore, the pressure regulating assembly includes a connecting column mounted on the mounting housing, two mounting plates for mounting are provided on the connecting column, an adjusting spring for support is provided between the two mounting plates, and a sealing element is provided at the bottom of one of the mounting plates to seal the pressure relief port.
[0011] Furthermore, the sealing element includes a sealing platform for sealing the pressure relief port, and a support rod mounted on a mounting plate is fixedly connected to the sealing platform.
[0012] Furthermore, the connecting column is threaded with an adjusting bolt for adjustment, and the bottom of the adjusting bolt is provided with a mounting ring, which is used to support the mounting plate.
[0013] Furthermore, the connecting post is also provided with a sealing plate for achieving a seal, and the connecting post is provided with a guide ring that is slidably connected to the connecting post.
[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0015] I. This pressure regulating device for biogas digesters, by being equipped with a drug storage tank and a pressurizing component, can effectively treat biogas, preventing its direct release into the atmosphere and thus avoiding environmental damage. At the same time, the treated biogas can avoid causing harm to the human body when it is discharged, further increasing its safety during use.
[0016] II. This pressure regulating device for biogas digesters, by incorporating an adjusting spring, effectively ensures good support for the sealing components during use, thereby achieving the effect of sealing or depressurizing the biogas digester; by incorporating an adjusting bolt, it effectively adjusts the supporting force of the adjusting spring during use, thus ensuring the regulation of the internal pressure of the biogas digester and guaranteeing its stability during use. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a cross-sectional view of the structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the pressure regulating component of this utility model;
[0020] Figure 4 This is a schematic diagram of the processing component structure of this utility model.
[0021] In the diagram: 1. Connecting seat; 11. Pressure relief chamber; 12. Mounting housing; 13. Protective cover; 14. Pressure relief port; 15. Connecting interface; 2. Processing assembly; 21. Processing chamber; 22. Connecting port; 23. Discharge port; 24. Drug storage chamber; 25. Pressurizing component; 3. Pressure regulating assembly; 31. Sealing plate; 32. Mounting ring; 33. Mounting plate; 34. Connecting column; 35. Adjusting bolt; 36. Adjusting spring; 37. Guide ring; 38. Sealing component. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Example 1:
[0024] Please see Figure 1-4This embodiment of a pressure regulating device for a biogas digester includes a connecting base 1. The connecting base 1 is characterized by: a pressure relief chamber 11 for installation; a protective mounting shell 12 on top of the pressure relief chamber 11; a pressure regulating component 3 for pressure relief inside the mounting shell 12; and a protective cover 13 on top of the mounting shell 12. A pressure relief port 14 is located on top of the connecting base 1, inside the pressure relief chamber 11. A connection interface 15 is located on one side of the pressure relief chamber 11, connected to a processing component 2 for treating biogas. The processing component 2 includes a processing chamber 21 for treating biogas, a connection port 22 communicating with the connection interface 15, an exhaust port 23 at the bottom of the processing chamber 21, a storage chamber 24 for storing processing chemicals on the processing chamber 21, a pressurizing component 25 on top of the storage chamber 24, and a nozzle at the bottom of the storage chamber 24, located inside the processing chamber 21. In actual use, the staff can connect the bottom of the connecting seat 1 to the biogas digester. Then, under the action of the pressure regulating component 3, the pressure inside the biogas digester can be effectively monitored in real time. When the internal pressure is high, the pressure regulating component 3 will cancel the sealing effect on the pressure relief port 14, so that the pressure relief port 14 can discharge the biogas inside the biogas digester to ensure the pressure balance inside the biogas digester.
[0025] After the seal on the pressure relief port 14 is removed, biogas will enter the connection port 22 from the treatment chamber 21 through the interface 15. At this time, the pressurizing component 25 can pressurize the medicine storage chamber 24, so that the medicine for treating biogas in the medicine storage chamber 24 can be sprayed out through the nozzle, thereby achieving the effect of treating biogas.
[0026] The technical effects of the above embodiments are as follows: by setting up the drug storage bin 24 and the pressurizing component 25, the biogas can be effectively treated, avoiding its direct emission into the atmosphere and thus preventing environmental damage; at the same time, the treated biogas can avoid causing harm to the human body when it is discharged, further increasing its safety during use.
[0027] As a preferred technical solution in this embodiment: the pressure regulating assembly 3 includes a connecting column 34 mounted on the mounting housing 12, two mounting plates 33 for mounting are provided on the connecting column 34, and an adjusting spring 36 for support is provided between the two mounting plates 33. A sealing element 38 is provided at the bottom of one mounting plate 33, which is used to seal the pressure relief port 14. The sealing element 38 includes a sealing platform for sealing the pressure relief port 14, and a support rod mounted on the mounting plate 33 is fixedly connected to the sealing platform. An adjusting bolt 35 for adjustment is threaded onto the connecting column 34, and a mounting ring 32 is provided at the bottom of the adjusting bolt 35, which is used to support the mounting plate 33. A sealing plate 31 for sealing is also provided on the connecting column 34, and a guide ring 37 is slidably connected to the connecting column 34.
[0028] As a preferred technical solution in this embodiment: In actual use, when the operator connects the connecting seat 1 to the biogas digester, the biogas inside will enter the pressure relief port 14. At this time, under the action of the adjusting spring 36, the mounting plate 33 can be driven to form a tight fit between the sealing element 38 and the opening of the pressure relief port 14, thereby effectively sealing the pressure relief port 14 during use. When the pressure inside the pressure relief port 14 is too high, it will push up the sealing element 38 and the mounting plate 33, thereby causing the adjusting spring 36 to be subjected to... When the pressure is compressed, the sealing element 38 cancels the sealing effect on the pressure relief port 14, allowing the biogas in the pressure relief port 14 to be discharged from the interface 15 into the treatment component 2, thereby achieving the effect of treating the biogas. Furthermore, by discharging the biogas, the pressure inside the biogas digester can be effectively balanced, thus achieving the effect of regulating the pressure inside the biogas digester. When the pressure inside the biogas digester is less than the elastic force of the adjusting spring 36, the mounting plate 33 can drive the sealing element 38 again to achieve the effect of sealing the pressure relief port 14, thereby achieving the effect of regulating the pressure inside the biogas digester.
[0029] Furthermore, when the staff needs to adjust the pressure relief inside the biogas digester, the adjusting bolt 35 can be rotated to achieve the effect of displacement of the connecting column 34. During the displacement of the adjusting bolt 35, the mounting ring 32 and the mounting plate 33 can be moved downward. During the displacement of the mounting plate 33, the adjusting spring 36 can be compressed, thereby providing stronger support for the mounting plate 33. This allows the mounting plate 33 to provide stronger support for the seal 38, thus achieving a higher pressure inside the biogas digester. Conversely, the adjusting bolt 35 can be moved upward to reduce the elasticity of the adjusting spring 36, resulting in a smaller support force and thus reducing the pressure inside the biogas digester.
[0030] The technical effects of the above embodiments are as follows: by providing an adjusting spring 36, the sealing element 38 can be effectively supported during use, thereby achieving the effect of sealing or depressurizing the biogas digester; by providing an adjusting bolt 35, the supporting force of the adjusting spring 36 can be effectively adjusted during use, thereby ensuring the pressure inside the biogas digester can be regulated during use, thus ensuring its stability during use.
[0031] 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pressure regulating device for a biogas digester, comprising a connecting base (1), characterized in that: The connecting seat (1) is provided with a pressure relief chamber (11) for installation. The top of the pressure relief chamber (11) is provided with a protective mounting shell (12). The inside of the mounting shell (12) is provided with a pressure regulating component (3) for pressure relief. The top of the mounting shell (12) is also provided with a protective cover (13). The top of the connecting seat (1) is provided with a pressure relief port (14), which is located inside the pressure relief chamber (11). A connection port (15) is provided on one side of the pressure relief chamber (11), and the connection port (15) is connected to a processing component (2) for processing biogas. The processing component (2) includes a processing chamber (21) for processing biogas. The processing chamber (21) is provided with a connection port (22) that communicates with the interface (15). The bottom of the processing chamber (21) is provided with an exhaust port (23) for venting. The processing chamber (21) is provided with a medicine storage chamber (24) for storing processing medicines. The top of the medicine storage chamber (24) is provided with a pressurizing component (25) for pressurization. The bottom of the medicine storage chamber (24) is also provided with a nozzle, which is located inside the processing chamber (21).
2. The pressure regulating device for a biogas digester according to claim 1, characterized in that: The pressure regulating assembly (3) includes a connecting column (34) mounted on the mounting housing (12), two mounting plates (33) for mounting are provided on the connecting column (34), an adjusting spring (36) for support is provided between the two mounting plates (33), and a sealing element (38) is provided at the bottom of one of the mounting plates (33), the sealing element (38) is used to seal the pressure relief port (14).
3. A pressure regulating device for a biogas digester according to claim 2, characterized in that: The seal (38) includes a sealing platform for sealing the pressure relief port (14), and a support rod fixedly connected to the sealing platform and mounted on the mounting plate (33).
4. A pressure regulating device for a biogas digester according to claim 3, characterized in that: The connecting column (34) is threaded with an adjusting bolt (35) for adjustment. The bottom of the adjusting bolt (35) is provided with a mounting ring (32), which is used to support the mounting plate (33).
5. A pressure regulating device for a biogas digester according to claim 4, characterized in that: The connecting column (34) is also provided with a sealing plate (31) for achieving sealing, and the connecting column (34) is provided with a guide ring (37) that is slidably connected to the connecting column (34).