Heat preservation type biogas anaerobic fermentation tank
By designing an insulated biogas anaerobic fermentation tank and using a heating ring and stirring rod assembly, the problems of incomplete fermentation and bottom accumulation in cold weather were solved, achieving a more efficient fermentation rate and fermentation rate.
Patent Information
- Application Number
- CN202422448413.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-11
AI Technical Summary
In cold weather, the insulation effect of existing biogas fermentation tanks is insufficient, resulting in incomplete fermentation and slow fermentation rate. At the same time, the fermentation materials tend to sink to the bottom and cannot fully contact with microorganisms.
A heat-insulated biogas anaerobic fermentation tank was designed, consisting of a stirring tank, a heat-insulating tank, and a monitoring tank. A heating ring and a stirring rod assembly were installed inside the tank to ensure adequate contact between the fermentation feedstock and the microorganisms, while waste gases were discharged through a gas valve.
It improves the heat preservation effect of the fermentation tank, promotes the full contact between the fermentation raw materials and microorganisms, increases the fermentation rate and fermentation rate, and prevents the inhibition of the fermentation process by sedimentation and gas accumulation.
Smart Images
Figure CN223357644U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fermentation tanks, in particular to a heat-insulating biogas anaerobic fermentation tank. Background Art
[0002] Biogas fermentation, also known as anaerobic digestion or fermentation, refers to the process by which organic matter, under certain conditions of moisture, temperature, and anaerobic conditions, is broken down and metabolized by various microorganisms to form a combustible mixture of gases, such as methane and carbon dioxide. Due to the different operating environments of fermentation tanks, in cold weather, insufficient insulation may lead to insufficient biogas fermentation. Furthermore, after the fermentation material reacts, it tends to accumulate and sink to the bottom, resulting in incomplete and slow fermentation. Therefore, we have designed an insulated biogas anaerobic fermentation tank to improve the fermentation rate and efficiency. It promotes material mixing, ensuring full contact between the fermentation materials and microorganisms, ensuring that the microorganisms can evenly act on the organic matter and improve reaction efficiency. It also improves mass transfer, facilitating the transfer of nutrients, intermediates, and gases, avoiding localized over- or under-concentrations and creating a more favorable growth environment for microorganisms. It prevents stratification and sedimentation, maintaining a uniform state of the fermentation material and preventing solid precipitation and stratification, thereby ensuring the uniformity and stability of the entire fermentation system. Furthermore, it releases gases promptly to prevent gas accumulation from inhibiting the fermentation process. Utility Model Content
[0003] The purpose of the utility model is to provide a heat-insulating biogas anaerobic fermentation tank. By adopting the device, the problem of insufficient heat preservation effect and insufficient biogas fermentation in cold weather is solved. At the same time, the problem of incomplete fermentation and slow fermentation is solved because the fermentation materials are likely to accumulate and sink to the bottom after reaction.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an insulated biogas anaerobic fermentation tank, comprising a stirring tank body, an insulating tank body is fixedly provided on one side of the stirring tank body, a monitoring tank body is fixedly provided on the side of the insulating tank body away from the stirring tank body, the upper end of the insulating tank body is fixedly provided with a feed port, the stirring tank body comprises an outer shell one, a stirring rod assembly is penetrated inside the end of the outer shell one away from the insulating tank body, the other end of the outer shell one is fixedly connected to the insulating tank body, an air valve is fixedly provided on the end of the outer shell one away from the insulating tank body, when the fermentation raw materials and microorganisms are fully contacted for fermentation, the raw materials that sink to the bottom cannot fully contact with the microorganisms, and the stirring rod assembly is started to slowly stir the insulating tank body, so that the microorganisms and the raw materials are fully contacted for fermentation, and the waste gas generated at the beginning can be discharged through the air valve.
[0005] Preferably, the stirring rod assembly includes a servo motor, a driving end of the servo motor is fixedly mounted on the outer shell, a turntable is fixedly mounted on the driving end of the servo motor, the turntable is movably mounted inside the outer shell, a connecting rod is fixedly provided on the end of the turntable away from the servo motor, a rotating frame is fixedly provided on the end of the connecting rod away from the turntable, a plurality of stirring rods are fixedly provided on the outer side of the two ends of the rotating frame away from the connecting rod, and a rotating paddle is provided around the outer side of the two ends of the rotating frame away from the connecting rod. The stirring of the raw materials is driven by the servo motor to rotate the rotating frame, so that the stirring rod stirs the raw materials that have settled to the bottom. Since some dead corners cannot be stirred, the stirring of the raw materials is more uniform through the rotation of the rotating paddle.
[0006] Preferably, the heat-insulating tank body includes an external tank body, one end of the external tank body is fixedly connected to the stirring tank body, the other end of the external tank body is fixedly connected to the monitoring tank body, a heating ring is fixedly provided on the inner side of the external tank body, an internal tank body is fixedly provided on the inner side of the heating ring, at least four supporting legs are provided on the lower end of the outer side of the external tank body, a discharge port assembly is penetrated through the lower end of the external tank body, and a discharge port assembly is penetrated through the lower end of the internal tank body. The fermentation tank has high requirements on the temperature and heat preservation of objects, and the temperature is maintained by the heating ring between the external tank body and the internal tank body, which guides the fermentation of microorganisms, and the fermented waste residue is discharged through the discharge port assembly.
[0007] Preferably, the discharge port assembly includes a bolt, a threaded rod 1 is provided on the inner side of the bolt, the threaded rod 1 is threadedly connected to the bolt, and the waste is moved out by rotating the threaded rod 1, so that it is discharged from the discharge port assembly.
[0008] Preferably, the monitoring tank body includes an outer shell 2, an exhaust pipe is provided inside the end of the outer shell 2 away from the insulation tank body, a valve is provided at the output end of the exhaust pipe, an observation port is fixedly provided at the end of the outer shell 2 away from the insulation tank body, and an air pressure monitoring sensor is fixedly provided at the end of the outer shell 2 away from the insulation tank body. We judge whether stirring is needed by observing at the observation port, and judge whether the gas needs to be discharged through the exhaust pipe by using the air pressure monitoring sensor.
[0009] Preferably, the feed port includes a feed port shell, a rubber ring is fixedly provided on the inner side of the feed port shell, threaded rods 2 are provided through both ends of the outer side of the feed port shell, a cover plug is provided on the inner side of the feed port shell, the cover plug matches the feed port shell, a plurality of handles are fixedly provided on the upper end of the cover plug, threaded holes are provided on the outer side of the cover plug where it matches the threaded rod 2, the threaded holes are threadedly connected to the threaded rod 2, and the cover plug can be removed from the feed port shell by removing the threaded rod 2, and the cover plug is sealed by the rubber ring to make it more airtight.
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0011] The utility model proposes an insulated biogas anaerobic fermentation tank, comprising a stirring tank body, a heat-insulating tank body is fixedly arranged on one side of the stirring tank body, a monitoring tank body is fixedly arranged on the side of the heat-insulating tank body away from the stirring tank body, the upper end of the heat-insulating tank body is fixedly arranged with a feed port, the stirring tank body comprises an outer shell one, a stirring rod assembly is penetrated inside the end of the outer shell one away from the heat-insulating tank body, the other end of the outer shell one is fixedly connected to the heat-insulating tank body, and an air valve is fixedly arranged on the end of the outer shell one away from the heat-insulating tank body. When the fermentation raw materials and microorganisms are fully in contact with each other for fermentation, the raw materials that sink to the bottom cannot fully come into contact with the microorganisms. By starting the stirring rod assembly to slowly stir the heat-insulating tank body, the microorganisms are fully in contact with the raw materials for fermentation, and the waste gas generated at the beginning can be discharged through the air valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 This is a schematic diagram of the heat preservation tank structure of the utility model;
[0014] Figure 3 This is a schematic diagram of the structure of the stirring tank of the present utility model;
[0015] Figure 4 This is a schematic structural diagram of the stirring rod assembly of the present utility model;
[0016] Figure 5 This is a schematic diagram of the monitoring tank structure of the utility model;
[0017] Figure 6 This is a schematic diagram of the structure of the discharge port assembly of the utility model;
[0018] Figure 7 This is a schematic diagram of the feed port structure of the present utility model.
[0019] In the figure: 1. Mixing tank body; 11. Shell 1; 12. Stirring rod assembly; 121. Servo motor; 122. Turntable; 123. Connecting rod; 124. Rotating frame; 125. Stirring rod; 126. Rotating paddle; 13. Air valve; 2. Insulated tank body; 21. External tank body; 22. Heating ring; 23. Internal tank body; 24. Discharge port assembly; 241. Bolt; 242. Threaded rod 1; 25. Support leg; 3. Monitoring tank body; 31. Shell 2; 32. Observation port; 33. Air pressure monitoring sensor; 34. Exhaust pipe; 35. Valve; 4. Feed port; 41. Feed port shell; 42. Rubber ring; 43. Threaded rod 2; 44. Cover plug; 45. Handle; 46. Threaded hole. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.
[0022] Combine Figure 1 and Figure 2 , an insulated biogas anaerobic fermentation tank, including a stirring tank body 1, an insulating tank body 2 is fixedly arranged on one side of the stirring tank body 1, a monitoring tank body 3 is fixedly arranged on the side of the insulating tank body 2 away from the stirring tank body 1, the upper end of the insulating tank body 2 is fixedly arranged with a feed port 4, the stirring tank body 1 includes an outer shell 11, a stirring rod assembly 12 is penetrated inside the end of the outer shell 11 away from the insulating tank body 2, the other end of the outer shell 11 is fixedly connected to the insulating tank body 2, and an air valve 13 is fixedly arranged on the end of the outer shell 11 away from the insulating tank body 2. When the fermentation raw materials and microorganisms are fully in contact for fermentation, the sediment raw materials generated cannot fully contact with the microorganisms. By starting the stirring rod assembly 12, the insulating tank body 2 is slowly stirred, so that the microorganisms and the raw materials are fully in contact for fermentation, and the waste gas generated at the beginning can be discharged through the air valve 13.
[0023] Combine Figure 2 and Figure 4 , an insulated biogas anaerobic fermentation tank, the stirring rod assembly 12 includes a servo motor 121, the driving end of the servo motor 121 is fixedly mounted on the shell 11, the driving end of the servo motor 121 is fixedly mounted with a turntable 122, and the turntable 122 is movably mounted inside the shell 11, and a connecting rod 123 is fixedly provided on the end of the turntable 122 away from the servo motor 121, and a rotating frame 124 is fixedly provided on the end of the connecting rod 123 away from the turntable 122, and a plurality of stirring rods 125 are fixedly provided on the outer side of the two ends of the rotating frame 124 away from the connecting rod 123, and a rotating paddle 126 is arranged around the outer side of the two ends of the rotating frame 124 away from the connecting rod 123. The stirring of the raw materials is driven by the servo motor 121 to rotate the rotating frame 124, so that the stirring rod 125 stirs the bottom raw materials. Since some dead corners cannot be stirred, the rotation of the rotating paddle 126 makes the stirring of the raw materials more uniform.
[0024] Combine Figure 1 and Figure 2, an insulated biogas anaerobic fermentation tank, the insulated tank body 2 includes an external tank body 21, one end of the external tank body 21 is fixedly connected to the stirring tank body 1, and the other end of the external tank body 21 is fixedly connected to the monitoring tank body 3, a heating ring 22 is fixedly provided on the inner side of the external tank body 21, and an internal tank body 23 is fixedly provided on the inner side of the heating ring 22, at least four supporting legs 25 are provided at the lower end of the outer side of the external tank body 21, a discharge port assembly 24 is penetrated at the lower end of the external tank body 21, and a discharge port assembly 24 is penetrated at the lower end of the internal tank body 23. The fermentation tank has high requirements on the temperature and thermal insulation of objects. The temperature is maintained by the heating ring 22 between the external tank body 21 and the internal tank body 23, which guides the fermentation of microorganisms, and the fermented waste residue is discharged through the discharge port assembly 24.
[0025] Combine Figure 2 and Figure 6 , an insulated biogas anaerobic fermentation tank, the discharge port assembly 24 includes a bolt 241, a threaded rod 242 is provided on the inner side of the bolt 241, the threaded rod 242 is threadedly connected to the bolt 241, and the waste is moved out by rotating the threaded rod 242, so that it is discharged from the discharge port assembly 24.
[0026] Combine Figure 1 and Figure 5 An insulated biogas anaerobic fermentation tank, the monitoring tank body 3 includes an outer shell 31, an exhaust pipe 34 is provided inside the end of the outer shell 31 away from the insulated tank body 2, and a valve 35 is provided at the output end of the exhaust pipe 34. An observation port 32 is fixedly provided at the end of the outer shell 31 away from the insulated tank body 2, and an air pressure monitoring sensor 33 is fixedly provided at the end of the outer shell 31 away from the insulated tank body 2. We judge whether stirring is needed by observing at the observation port 32, and judge whether the gas needs to be discharged through the exhaust pipe 34 by the air pressure monitoring sensor 33.
[0027] Combine Figure 1 and Figure 7 , an insulated biogas anaerobic fermentation tank, the feed port 4 includes a feed port shell 41, a rubber ring 42 is fixedly provided on the inner side of the feed port shell 41, and threaded rods 43 are provided at both ends of the outer side of the feed port shell 41, and a cover plug 44 is provided on the inner side of the feed port shell 41, and the cover plug 44 matches the feed port shell 41. A plurality of handles 45 are fixedly provided on the upper end of the cover plug 44, and threaded holes 46 are provided on the outer side of the cover plug 44 where the threaded rods 43 match. The threaded holes 46 are threadedly connected to the threaded rods 43. By removing the threaded rods 43, the cover plug 44 can be removed from the feed port shell 41, and the cover plug 44 is sealed by the rubber ring 42 to make it more airtight.
[0028] Working principle: When the fermentation raw materials and microorganisms are in full contact for fermentation, the sedimented raw materials produced cannot fully contact with the microorganisms. We judge whether stirring is needed by observing at the observation port 32, and judge whether the gas needs to be discharged through the exhaust pipe 34 by the air pressure monitoring sensor 33. When stirring is needed, the servo motor 121 drives the rotating frame 124 to rotate, so that the stirring rod 125 stirs the sedimented raw materials in the internal tank body 23. Since some dead corners cannot be stirred, the rotation of the rotating paddle 126 makes the stirring of the raw materials more uniform, and the waste gas generated at the beginning can be discharged through the air valve 13. When we need to set requirements for the temperature and thermal insulation of the fermentation tank, the heating ring 22 between the external tank body 21 and the internal tank body 23 is used to maintain its temperature, which guides the fermentation of microorganisms. The fermented waste residue is discharged through the discharge port assembly 24, and the raw materials are added through the feed port 4.
[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0030] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A heat-insulating biogas anaerobic fermentation tank, comprising a stirring tank body (1), a heat-insulating tank body (2) fixedly arranged on one side of the stirring tank body (1), a monitoring tank body (3) fixedly arranged on the side of the heat-insulating tank body (2) away from the stirring tank body (1), and a feed port (4) fixedly arranged at the upper end of the heat-insulating tank body (2), characterized in that: The stirring tank body (1) comprises an outer shell (11), a stirring rod assembly (12) is provided inside the end of the outer shell (11) away from the heat-insulating tank body (2), the other end of the outer shell (11) is fixedly connected to the heat-insulating tank body (2), and an air valve (13) is fixedly provided at the end of the outer shell (11) away from the heat-insulating tank body (2).
2. The heat-insulated biogas anaerobic fermentation tank according to claim 1, characterized in that: The stirring rod assembly (12) comprises a servo motor (121), a driving end of the servo motor (121) is fixedly mounted on the housing (11), a turntable (122) is fixedly mounted on the driving end of the servo motor (121), the turntable (122) is movably mounted inside the housing (11), a connecting rod (123) is fixedly arranged at one end of the turntable (122) away from the servo motor (121), a rotating frame (124) is fixedly arranged at one end of the connecting rod (123) away from the turntable (122), a plurality of stirring rods (125) are fixedly arranged on the outer sides of both ends of the rotating frame (124) away from the connecting rod (123), and a rotating paddle (126) is arranged around the outer sides of both ends of the rotating frame (124) away from the connecting rod (123).
3. The heat-insulated biogas anaerobic fermentation tank according to claim 2, characterized in that: The heat-insulating tank body (2) comprises an external tank body (21), one end of the external tank body (21) is fixedly connected to the stirring tank body (1), and the other end of the external tank body (21) is fixedly connected to the monitoring tank body (3); a heating ring (22) is fixedly provided on the inner side of the external tank body (21), and an internal tank body (23) is fixedly provided on the inner side of the heating ring (22); at least four supporting legs (25) are provided on the lower end of the outer side of the external tank body (21); a discharge port assembly (24) is provided through the lower end of the external tank body (21), and a discharge port assembly (24) is provided through the lower end of the internal tank body (23).
4. The heat-insulated biogas anaerobic fermentation tank according to claim 3, characterized in that: The discharge port assembly (24) includes a bolt (241), a threaded rod (242) is provided on the inner side of the bolt (241), and the threaded rod (242) is threadedly connected to the bolt (241).
5. The heat-insulated biogas anaerobic fermentation tank according to claim 4, characterized in that: The monitoring tank body (3) comprises a second shell (31), an exhaust pipe (34) is provided inside the second shell (31) at one end away from the heat-insulating tank body (2), a valve (35) is provided at the output end of the exhaust pipe (34), an observation port (32) is fixedly provided at the second shell (31) at one end away from the heat-insulating tank body (2), and an air pressure monitoring sensor (33) is fixedly provided at the second shell (31) at one end away from the heat-insulating tank body (2).
6. The heat-insulated biogas anaerobic fermentation tank according to claim 1, characterized in that: The feed port (4) includes a feed port shell (41), a rubber ring (42) is fixedly provided on the inner side of the feed port shell (41), threaded rods (43) are provided through both ends of the outer side of the feed port shell (41), a cover plug (44) is provided on the inner side of the feed port shell (41), the cover plug (44) matches the feed port shell (41), a plurality of handles (45) are fixedly provided on the upper end of the cover plug (44), a threaded hole (46) is provided on the outer side of the cover plug (44) where it matches the threaded rod (43), and the threaded hole (46) is threadedly connected to the threaded rod (43).