A biogas power generation device capable of improving energy utilization

Abstract

The utility model relates to biogas power generation technical field, concretely is a kind of biogas power generation device that can improve energy utilization, including base, the surface of base is fixed with biogas fermentation tank, the inside of biogas fermentation tank is fixed with fermentation inner jar, the inside of fermentation inner jar is fixed with separate bucket, the inside of biogas fermentation tank is provided with efficient stirring mechanism, efficient stirring mechanism includes stirring assembly and second stirring shaft, the central position of base inner wall is rotatably connected with second stirring shaft, the surface of second stirring shaft is installed with stirring assembly, the surface of base is installed with biogas generator, the surface of biogas generator is fixed with three-way exhaust pipe.The utility model not only improves the production efficiency of biogas when biogas power generation device is used, and the energy utilization rate when biogas power generation device is used is improved.

Description

Technical Field

[0001] This utility model relates to the field of biogas power generation technology, specifically a biogas power generation device that can improve energy utilization efficiency. Background Technology

[0002] Biogas combustion power generation is a biogas utilization technology that has emerged with the continuous development of large-scale biogas digester construction and comprehensive biogas utilization. It uses biogas produced by anaerobic fermentation in an engine and is equipped with a comprehensive power generation device to generate electricity and heat. The amount of biogas generated in the biogas tank and the production efficiency of the biogas power generation device are important factors in whether the biogas power generation device can generate electricity efficiently.

[0003] A search revealed a utility model patent with patent number 202323261190.6 entitled "A Utility Model of Anaerobic Tank Biogas Collection and Power Generation Device". The patent includes a base plate, an anaerobic tank fixedly connected to one side of the top of the base plate, a heater installed on the lower side of one side of the anaerobic tank, a shell fixedly connected to one side of the top of the anaerobic tank, a second motor provided inside the anaerobic tank, a stirring rod fixedly connected to the output end of the second motor, and a curved tube fixedly connected to the inner wall of one side of the anaerobic tank.

[0004] Research and analysis revealed that while the biogas collection and power generation device facilitates the removal of attached anaerobic activated sludge by workers, preventing incomplete discharge of the anaerobic activated sludge, it also has some drawbacks: the biogas power generation device requires two motors to drive the stirring rod and scraper to stir and scrape the material in the anaerobic tank, which requires a significant amount of kinetic energy. Furthermore, the stirring rod can only rotate up and down, resulting in relatively poor uniformity of stirring and potentially leading to incomplete material mixing, thus reducing the energy utilization rate of the biogas power generation device. Utility Model Content

[0005] The purpose of this invention is to provide a biogas power generation device that can improve energy utilization efficiency, so as to solve the problem of low energy utilization efficiency of biogas power generation devices mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a biogas power generation device that can improve energy utilization efficiency, comprising a base, a control key mounted on the surface of the base, a biogas fermentation tank fixed on the surface of the base, an inner fermentation tank fixed inside the biogas fermentation tank, a partition bucket fixed inside the inner fermentation tank, a high-efficiency stirring mechanism provided inside the biogas fermentation tank, the high-efficiency stirring mechanism including a stirring component and a second stirring shaft, the second stirring shaft being rotatably connected at the center of the inner wall of the base, a stirring component mounted on the surface of the second stirring shaft, a biogas generator mounted on the surface of the base, and a three-way exhaust pipe fixed on the surface of the biogas generator.

[0007] Preferably, the central axes of the separator, the inner fermentation tank, and the biogas digester are coincident, the bottom of the separator is connected to the biogas digester through a water guide hole, and the separator is connected to the inner fermentation tank through a material guide pipe embedded at its bottom.

[0008] Preferably, the stirring assembly further includes a stirring scraper, with stirring scrapers fixed on both sides of the second stirring shaft. The stirring scrapers are located between the fermentation inner tank and the dividing tank, and the surfaces of the stirring scrapers are in contact with the inner wall of the fermentation inner tank and the surface of the dividing tank, respectively.

[0009] Preferably, the stirring assembly further includes a gear ring, a gear, and a first stirring shaft. The first stirring shaft is rotatably connected to the top of the stirring scraper. The first stirring shaft is located inside the separator. A gear is fitted at the top of the first stirring shaft. The central axis of the gear coincides with the central axis of the first stirring shaft. A gear ring is fixed to the inner wall of the base. The gear ring is fitted onto the outside of the second stirring shaft. The central axis of the gear ring coincides with the central axis of the second stirring shaft. The gear ring and the gear mesh with each other.

[0010] Preferably, the stirring assembly further includes a stirring plate, a cutter, and a material passage hole. The stirring plate is fixed circumferentially on the surface of the first stirring shaft. The stirring plate has an arc-shaped structure. One end of the stirring plate is in contact with the inner wall of the separator. The surface of the stirring plate is provided with equally spaced material passage holes. A cutter is fixed on the inner wall of the material passage hole.

[0011] Preferably, the high-efficiency stirring mechanism further includes a drive motor, which is installed at the center of the base surface. The input end of the drive motor is electrically connected to the output end of the control key, and the output end of the drive motor is fixed to a rotating shaft via a coupling. One end of the rotating shaft is fixedly connected to one end of the second stirring shaft.

[0012] Preferably, a biogas filter is installed on the surface of the base. The inlet of the biogas filter passes through the biogas fermentation tank through a pipe and extends into the interior of the fermentation tank. The outlet of the biogas filter is connected to the biogas generator through a pipe.

[0013] Preferably, the surface of the base is provided with an exhaust gas heating mechanism, which is connected to the biogas digester and the biogas generator respectively. The exhaust gas heating mechanism includes a water guide pipe, a boiler, a connecting water pipe, a heat exchanger, a three-way water inlet pipe, and a water pump. The boiler is fixed on the surface of the base. The boiler has a double-layer structure, with the inner layer for water storage and the outer layer for heating the water in the inner layer. The outer layer is connected to the three-way exhaust pipe. The bottom of the boiler is fixed with a water guide pipe. The surface of the biogas generator is equipped with a heat exchanger. A water pump is installed on one side of each biogas digester. The input end of the water pump is electrically connected to the output end of the control key. One end of each water pump extends into the interior of the base through a pipe. One end of one water pump is connected to one end of the water guide pipe. The outlet end of the heat exchanger is fixed with a connecting water pipe, which is connected to the inlet end of the boiler. The three-way exhaust pipe is wrapped around the surface of the connecting water pipe. The inlet end of the heat exchanger is fixed with a three-way water inlet pipe, and one end of the three-way water inlet pipe is connected to one end of the water pump.

[0014] Preferably, the waste gas heating mechanism further includes a water level thermometer. The water level thermometer is installed on the inner wall at the top of the biogas fermentation tank. The water level thermometer is located on the outside of the fermentation tank. The input end of the water level thermometer is electrically connected to the output end of the control key.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the biogas power generation device that can improve energy utilization not only improves the biogas production efficiency when the biogas power generation device is in use, but also improves the energy utilization rate when the biogas power generation device is in use. Equipped with a high-efficiency stirring mechanism, the material is introduced through the feed hopper on the surface of the biogas digester, placing the material inside the fermentation tank and the dividing tank. The feed hopper is then sealed, and the drive motor is controlled by the operation control key to drive the second stirring shaft to rotate. The second stirring shaft then drives the stirring scraper to rotate, stirring the material on the outside of the dividing tank and improving the fermentation efficiency. At the same time, since the surface of the stirring scraper is in contact with the inner wall of the fermentation tank and the surface of the dividing tank, the material adhering to the surface of the fermentation tank and the dividing tank can be scraped off. Simultaneously, the stirring scraper drives the first stirring shaft to rotate synchronously, causing the first stirring shaft to rotate circumferentially along the separator. This causes the first stirring shaft to drive the gear to rotate synchronously, and the meshing action of the gear and the gear ring causes the gear to rotate on its own axis, which in turn causes the first stirring shaft to rotate on its own axis. Since the stirring plate has an arc-shaped structure and one end of the stirring plate is in contact with the inner wall of the separator, it is convenient for the stirring plate to scrape off the material attached to the surface of the separator. At the same time, when the stirring plate rotates, it can push the material located in the center of the separator to the outside, making it convenient for the material to contact the separator for heating. In addition, the material passage hole can reduce the resistance when the stirring plate rotates, and the cutter can cut larger materials, making the material ferment more fully and thoroughly, and the biogas production faster and more abundant. This achieves the efficient stirring function of the biogas power generation device, thereby improving the biogas production efficiency when the biogas power generation device is in use. Equipped with an exhaust gas heating mechanism, cold water is introduced into the heat exchanger through a three-way inlet pipe. The heat exchanger absorbs the heat generated by the biogas generator during operation, preheating the cold water inside the three-way inlet pipe. The preheated water then enters the boiler through a connecting pipe. Simultaneously, the exhaust gas generated by the biogas generator enters the boiler through a three-way exhaust pipe, heating the water inside. Because the three-way exhaust pipe is spirally wound around the surface of the connecting pipe, it further preheats the water inside the connecting pipe, resulting in a relatively high water temperature entering the boiler, thus saving heating time. Then, the water pump at one end of the guide pipe is turned on, guiding the heated water through the guide pipe into the biogas digester to heat the inner tank, increasing the reaction efficiency of the materials. Meanwhile, because the separator tank is connected to the water guide hole... Connected to the biogas digester, hot water enters the inner cavity of the separator simultaneously to heat the materials on both sides of the separator, increasing the heating efficiency. The water level and temperature can be monitored by a water level and thermometer inside the biogas digester. After a period of time, when the water temperature drops to the set value, the water inside the biogas digester is pumped back to the three-way inlet pipe and flows into the boiler through the three-way inlet pipe. At the same time, hot water from the boiler is introduced into the biogas digester. If the water temperature inside the boiler is too high, the corresponding solenoid valve can be closed to shut off the passage between the three-way exhaust pipe and the boiler. The exhaust gas inside the three-way exhaust pipe is discharged into the corresponding heat recovery equipment, realizing the function of the biogas power generation device in heating materials using the exhaust gas of the biogas generator. No additional heating source is required, improving the energy utilization rate of the biogas power generation device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 This is a top view enlarged cross-sectional schematic diagram of the biogas fermenter of this utility model; Figure 4 This is an enlarged structural schematic diagram of the biogas fermenter of this utility model.

[0017] In the diagram: 1. Base; 11. Control key; 2. Biogas fermentation tank; 21. Fermentation inner tank; 22. Divider tank; 3. High-efficiency stirring mechanism; 31. Stirring assembly; 311. Stirring plate; 312. Gear ring; 313. Gear; 314. Stirring scraper; 315. First stirring shaft; 316. Cutter; 317. Material passage hole; 32. Drive motor; 33. Second stirring shaft; 4. Biogas filtration section; 5. Exhaust gas heating mechanism; 51. Water guide pipe; 52. Boiler; 53. Connecting water pipe; 54. Heat exchanger; 55. T-shaped water inlet pipe; 56. Water pump; 57. Water level and thermometer; 6. Biogas generator; 61. T-shaped exhaust pipe. Detailed Implementation

[0018] 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, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. 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 an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0019] The structure of the biogas power generation device provided by this utility model, which can improve energy utilization efficiency, is as follows: Figure 1 and Figure 2 As shown, the system includes a base 1, on the surface of which a control key 11 is installed. The control key 11 can be of the LA series. A biogas digester 2 is fixed to the surface of the base 1. A discharge pipe for discharging material is fixed to the bottom of the biogas digester 2. The discharge pipe consists of a discharge pipe and a solenoid valve installed on the surface of the discharge pipe. An inner fermentation tank 21 is fixed inside the biogas digester 2. A partition barrel 22 is fixed inside the inner fermentation tank 21. The central axes of the partition barrel 22, the inner fermentation tank 21, and the biogas digester 2 are coincident. The body of the partition barrel 22 has an inner cavity. The bottom of the inner cavity is connected to the biogas digester 2 through a water guide hole. The partition barrel 22 is connected to the inner fermentation tank 21 through a material guide pipe embedded at its bottom.

[0020] Furthermore, such as Figure 3 and Figure 4As shown, the biogas fermenter 2 is equipped with a high-efficiency stirring mechanism 3. The high-efficiency stirring mechanism 3 includes a stirring assembly 31 and a second stirring shaft 33. The second stirring shaft 33 is rotatably connected to the center of the inner wall of the base 1. A scraper is fixed to the bottom of the second stirring shaft 33, and the surface of the scraper is in contact with the inner wall of the fermentation tank 21. The stirring assembly 31 is installed on the surface of the second stirring shaft 33. The stirring assembly 31 also includes a stirring scraper 314. Stirring scrapers 314 are fixed to both sides of the second stirring shaft 33. The scraper 314 is located between the fermentation tank 21 and the partition tank 22. The surface of the scraper 314 is in contact with the inner wall of the fermentation tank 21 and the surface of the partition tank 22. The stirring assembly 31 also includes a gear ring 312, a gear 313, and a first stirring shaft 315. The first stirring shaft 315 is rotatably connected to the top of the scraper 314. The first stirring shaft 315 is located inside the partition tank 22. The gear 313 is fitted at the top of the first stirring shaft 315. The central axis of the gear 313 is aligned with the first stirring shaft 315. The central axis of shaft 315 coincides with that of the second stirring shaft 33. A gear ring 312 is fixed to the inner wall of the base 1. The gear ring 312 is sleeved on the outside of the second stirring shaft 33. The central axis of the gear ring 312 coincides with that of the second stirring shaft 33. The gear ring 312 meshes with the gear 313. The stirring assembly 31 also includes a stirring plate 311, a cutter 316, and a material passage hole 317. The stirring plate 311 is fixed circumferentially on the surface of the first stirring shaft 315. The stirring plate 311 has an arc-shaped structure. One end of the stirring plate 311 is flush with the inner wall of the separator 22. The mixing plate 311 has equally spaced material passage holes 317 on its surface. A cutter 316 is fixed on the inner wall of the material passage hole 317. The high-efficiency mixing mechanism 3 also includes a drive motor 32. The drive motor 32 is installed at the center of the surface of the base 1. The model of the drive motor 32 can be selected from the JO series. The input end of the drive motor 32 is electrically connected to the output end of the control key 11. The output end of the drive motor 32 is fixed to a rotating shaft through a coupling. One end of the rotating shaft is fixedly connected to one end of the second mixing shaft 33.

[0021] In use, the material is introduced through the feed hopper on the surface of the biogas fermenter 2, so that the material is located inside the fermentation inner tank 21 and the partition tank 22. Then the feed hopper is sealed and plugged. Then the drive motor 32 is controlled by the operation control key 11, so that the drive motor 32 drives the second stirring shaft 33 to rotate, and the second stirring shaft 33 drives the stirring scraper 314 to rotate, stirring the material on the outside of the partition tank 22, improving the fermentation efficiency of the material. At the same time, since the surface of the stirring scraper 314 is in contact with the inner wall of the fermentation inner tank 21 and the surface of the partition tank 22 respectively, the material attached to the surface of the fermentation inner tank 21 and the partition tank 22 can be scraped off. Simultaneously, the stirring scraper 314 drives the first stirring shaft 315 to rotate synchronously, causing the first stirring shaft 315 to rotate circumferentially along the separating barrel 22. This causes the first stirring shaft 315 to drive the gear 313 to rotate synchronously, and the meshing action of the gear 313 and the gear ring 312 drives the gear 313 to rotate, which in turn drives the first stirring shaft 315 to rotate. Since the stirring plate 311 has an arc-shaped structure and one end of the stirring plate 311 is in contact with the inner wall of the separating barrel 22, it is convenient for the stirring plate 311 to scrape off the material attached to the surface of the separating barrel 22. At the same time, when the stirring plate 311 rotates, it can push the material located at the center of the separating barrel 22 to the outside, making it convenient for the material to contact the separating barrel 22 for heating. Meanwhile, the material passage hole 317 can reduce the resistance when the stirring plate 311 rotates, and the cutter 316 can cut larger materials, making the material ferment more fully and thoroughly, and the biogas production faster and more abundant, so as to realize the efficient stirring function of the biogas power generation device.

[0022] Furthermore, such as Figure 2 As shown, a biogas generator 6 is installed on the surface of the base 1. A three-way exhaust pipe 61 is fixed on the surface of the biogas generator 6. One end of the three-way exhaust pipe 61 is a three-way structure. Solenoid valves are installed at the junctions of the three-way exhaust pipe 61. One end of the three-way exhaust pipe 61 is connected to the exhaust port of the biogas generator 6 to facilitate the discharge of the waste gas generated by the biogas generator 6 during operation. The other end of the three-way exhaust pipe 61 is connected to the boiler 52 to facilitate the use of waste gas to heat the water inside the boiler 52. The other end of the three-way exhaust pipe 61 can be connected to the heat recovery equipment through a connecting structure to facilitate the continued recovery of residual heat after the boiler 52 has finished heating. A biogas filter section 4 is installed on the surface of the base 1. The air inlet of the biogas filter section 4 passes through the biogas fermentation tank 2 through a pipe and extends into the interior of the fermentation inner tank 21. The air outlet of the biogas filter section 4 is connected to the biogas generator 6 through a pipe. The biogas filter section 4 can be a desulfurization tower and a dehydration tower to facilitate the desulfurization and drying of the biogas generated inside the biogas fermentation tank 2.

[0023] Furthermore, such as Figure 2 and Figure 4As shown, a waste gas heating mechanism 5 is provided on the surface of the base 1. The waste gas heating mechanism 5 is connected to the biogas digester 2 and the biogas generator 6 respectively. The waste gas heating mechanism 5 includes a water guide pipe 51, a boiler 52, a connecting water pipe 53, a heat exchanger 54, a three-way water inlet pipe 55, and a water pump 56. The boiler 52 is fixed on the surface of the base 1. The boiler 52 has a double-layer structure. The inner layer is used for water storage, and the outer layer is used for heating the water in the inner layer. The outer layer is connected to the three-way exhaust pipe 61, which facilitates the introduction of the waste gas generated by the biogas generator 6 into the boiler 52 to heat the water. A water pipe 51 is fixed to the bottom of the biogas digester 2. A heat exchanger 54 is installed on the surface of the biogas generator 6 to facilitate the transfer of heat generated by the biogas generator 6 during operation to the interior of the heat exchanger 54, preheating the cold water entering the three-way water inlet pipe 55. A water pump 56 is installed on one side of the biogas digester 2. The model of the water pump 56 can be SLG series. The input end of the water pump 56 is electrically connected to the output end of the control key 11. One end of the water pump 56 extends into the interior of the base 1 through a pipe. One end of one of the water pumps 56 is connected to one end of the water pipe 51. A connecting water pipe 53 is fixed to the outlet end of heat exchanger 54, and the connecting water pipe 53 is connected to the inlet end of boiler 52. A three-way exhaust pipe 61 is wrapped around the surface of the connecting water pipe 53. A three-way inlet pipe 55 is fixed to the inlet end of heat exchanger 54. One end of the three-way inlet pipe 55 is connected to one end of water pump 56. The three-way inlet pipe 55 has a three-way pipe structure. Solenoid valves are installed at the joints of the three-way inlet pipe 55. One end of the three-way inlet pipe 55 is connected to heat exchanger 54 to introduce cold water into the heat exchanger 54. The other end of the three-way inlet pipe 55 is connected to one end of water pump 56. The water inside the biogas digester 2 is then introduced into the heat exchanger 54 for recycling. The other end of the three-way water inlet pipe 55 is connected to the water inlet pipe, which facilitates the initial introduction of cold water into the three-way water inlet pipe 55. The exhaust gas heating mechanism 5 also includes a water level thermometer 57. The water level thermometer 57 is installed on the inner wall at the top of the biogas digester 2. The model of the water level thermometer 57 can be selected from the WH series. The water level thermometer 57 is located on the outside of the fermentation inner tank 21. The input end of the water level thermometer 57 is electrically connected to the output end of the control key 11.

[0024] In operation, cold water is introduced into the heat exchanger 54 through the three-way inlet pipe 55. The heat exchanger 54 absorbs the heat generated by the biogas generator 6 during operation, preheating the cold water inside the three-way inlet pipe 55. The preheated water then enters the boiler 52 through the connecting water pipe 53. Simultaneously, the exhaust gas generated by the biogas generator 6 enters the boiler 52 through the three-way exhaust pipe 61, heating the water inside the boiler 52. Since the three-way exhaust pipe 61 is spirally wound around the surface of the connecting water pipe 53, it further preheats the water inside the connecting water pipe 53, resulting in a relatively high water temperature entering the boiler 52, thus saving time in heating the water inside the boiler 52. Subsequently, the water pump 56 at one end of the water guide pipe 51 is turned on, introducing the heated water into the biogas fermentation tank 2 through the water guide pipe 51 to heat the fermentation tank 21 and increase the reaction efficiency of the materials. Meanwhile, since the partition barrel 22 is connected to the biogas digester 2 through the water guide hole, hot water enters the inner cavity of the partition barrel 22 synchronously to heat the materials on both sides of the partition barrel 22, which can increase the heating efficiency of the materials. The water level and temperature can be monitored by the water level and temperature gauge 57 inside the biogas digester 2. After a period of time, when the water temperature drops to the set value, the water inside the biogas digester 2 can be pumped back to the three-way water inlet pipe 55 by the water pump 56, and then flow to the boiler 52 through the three-way water inlet pipe 55. At the same time, the hot water inside the boiler 52 is introduced into the biogas digester 2. If the water temperature inside the boiler 52 is too high, the passage between the three-way exhaust pipe 61 and the boiler 52 can be closed by closing the corresponding solenoid valve. The exhaust gas inside the three-way exhaust pipe 61 is discharged to the corresponding heat recovery equipment to realize the function of the biogas power generation device using the tail gas of the biogas generator 6 to heat the materials.

[0025] Working principle: When in use, the material is first introduced through the feed hopper on the surface of the biogas fermentation tank 2, so that the material is located inside the fermentation inner tank 21 and the partition tank 22. Then, the feed hopper is sealed and plugged. Then, the drive motor 32 is controlled by the operation control key 11 to work, so that the drive motor 32 drives the second stirring shaft 33 to rotate, and the second stirring shaft 33 drives the stirring scraper 314 to rotate, stirring the material on the outside of the partition tank 22, improving the fermentation efficiency of the material. At the same time, since the surface of the stirring scraper 314 is in contact with the inner wall of the fermentation inner tank 21 and the surface of the partition tank 22 respectively, the material attached to the surface of the fermentation inner tank 21 and the partition tank 22 can be scraped off. Simultaneously, the stirring scraper 314 drives the first stirring shaft 315 to rotate synchronously, causing the first stirring shaft 315 to rotate circumferentially along the separating tank 22. This causes the first stirring shaft 315 to drive the gear 313 to rotate synchronously, and the meshing action of the gear 313 and the gear ring 312 causes the gear 313 to rotate, which in turn drives the first stirring shaft 315 to rotate. Since the stirring plate 311 has an arc-shaped structure and one end of the stirring plate 311 is in contact with the inner wall of the separating tank 22, it is convenient for the stirring plate 311 to remove the material adhering to the surface of the separating tank 22. While scraping, the material at the center of the separator 22 is pushed to the outside when the mixing plate 311 rotates, making it easier for the material to come into contact with the separator 22 for heating. At the same time, the resistance of the mixing plate 311 during rotation is reduced by the material passage hole 317, and the larger material can be cut by the cutter 316, so that the material fermentation is more complete and thorough, and the biogas production is faster and more abundant. This realizes the efficient stirring function of the biogas power generation device for the material, thereby improving the biogas production efficiency when the biogas power generation device is in use.

[0026] When in use, after the material ferments, some biogas is produced. The biogas is then guided through a pipeline to the inside of the biogas filter section 4. Under the action of the biogas filter section 4, the biogas is desulfurized and dried before being introduced into the biogas generator 6, so that it can be used as the energy source for the biogas generator 6 to work and complete the biogas power generation work.

[0027] At this time, cold water can be introduced into the heat exchanger 54 through the three-way water inlet pipe 55. The heat exchanger 54 can absorb the heat generated by the biogas generator 6 during operation and preheat the cold water inside the three-way water inlet pipe 55. The preheated water enters the boiler 52 through the connecting water pipe 53. At the same time, the exhaust gas generated by the biogas generator 6 enters the boiler 52 through the three-way exhaust pipe 61 to heat the water inside the boiler 52. Since the three-way exhaust pipe 61 is spirally wound around the surface of the connecting water pipe 53, it can further preheat the water inside the connecting water pipe 53, so that the water temperature entering the boiler 52 is relatively high, thereby saving the time of heating the water inside the boiler 52. Then, the water pump 56 at one end of the water guide pipe 51 is turned on to introduce the heated water into the biogas fermentation tank 2 through the water guide pipe 51 to heat the fermentation tank 21 and increase the reaction efficiency of the materials. At the same time, since the separator 22 is connected to the biogas fermentation tank 21 through the water guide pipe 51, the water pump 56 at one end of the water guide pipe 55 is turned on. The heated water is introduced into the biogas fermentation tank 2 through the water guide pipe 51 to heat the fermentation tank 21 and increase the reaction efficiency of the materials. The water hole is connected to the biogas digester 2, allowing hot water to enter the inner cavity of the partition tank 22 simultaneously, heating the materials on both sides of the partition tank 22, which increases the heating efficiency of the materials. The water level and temperature can be monitored by the water level and temperature gauge 57 inside the biogas digester 2. After a period of time, when the water temperature drops to the set value, the water inside the biogas digester 2 can be pumped back to the three-way water inlet pipe 55 by the water pump 56, and then flow into the boiler 52 through the three-way water inlet pipe 55. At the same time, the hot water inside the boiler 52 is introduced into the biogas digester 2. If the water temperature inside the boiler 52 is too high, the passage between the three-way exhaust pipe 61 and the boiler 52 can be closed by closing the corresponding solenoid valve. The exhaust gas inside the three-way exhaust pipe 61 is discharged into the corresponding heat recovery equipment, so that the biogas power generation device can use the tail gas of the biogas generator 6 to heat the materials without the need for an additional heating source, thus improving the energy utilization rate of the biogas power generation device.

[0028] During material discharge, the material can be discharged by opening the solenoid valve on the surface of the discharge pipe at the bottom of the biogas digester 2. Since the fermentation inner tank 21 and the partition tank 22 are connected by a guide pipe, the material inside the fermentation inner tank 21 can be discharged into the discharge pipe through the partition tank 22. At the same time, the rotation of the second stirring shaft 33 drives the stirring scraper 314 to rotate synchronously, scraping off the material attached to the inner wall and surface of the fermentation inner tank 21 and the partition tank 22, thus completing the operation of the biogas power generation device.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A biogas power generation device that can improve energy utilization efficiency, comprising a base (1), characterized in that: The base (1) is equipped with a control key (11), the biogas fermentation tank (2) is fixed on the surface of the base (1), the fermentation tank (21) is fixed inside the biogas fermentation tank (2), the partition tank (22) is fixed inside the fermentation tank (21), the biogas fermentation tank (2) is equipped with a high-efficiency stirring mechanism (3), the high-efficiency stirring mechanism (3) includes a stirring component (31) and a second stirring shaft (33), the second stirring shaft (33) is rotatably connected at the center of the inner wall of the base (1), the stirring component (31) is installed on the surface of the second stirring shaft (33), the biogas generator (6) is installed on the surface of the base (1), and a three-way exhaust pipe (61) is fixed on the surface of the biogas generator (6).

2. The biogas power generation device with improved energy utilization efficiency according to claim 1, characterized in that: The central axes of the partition barrel (22), the fermentation inner tank (21), and the biogas fermentation tank (2) coincide. The bottom of the partition barrel (22) is connected to the biogas fermentation tank (2) through a water guide hole. The partition barrel (22) is connected to the fermentation inner tank (21) through a material guide pipe embedded at its bottom.

3. A biogas power generation device with improved energy utilization efficiency according to claim 1, characterized in that: The stirring assembly (31) also includes a stirring scraper (314). The stirring scrapers (314) are fixed on both sides of the second stirring shaft (33). The stirring scrapers (314) are located between the fermentation inner tank (21) and the partition tank (22). The surface of the stirring scraper (314) is in contact with the inner wall of the fermentation inner tank (21) and the surface of the partition tank (22), respectively.

4. A biogas power generation device with improved energy utilization efficiency according to claim 3, characterized in that: The stirring assembly (31) also includes a gear ring (312), a gear (313) and a first stirring shaft (315). The first stirring shaft (315) is rotatably connected to the top of the stirring scraper (314). The first stirring shaft (315) is located inside the separator (22). The gear (313) is fitted at the top of the first stirring shaft (315). The central axis of the gear (313) coincides with the central axis of the first stirring shaft (315). The gear ring (312) is fixed to the inner wall of the base (1). The gear ring (312) is fitted on the outside of the second stirring shaft (33). The central axis of the gear ring (312) coincides with the central axis of the second stirring shaft (33). The gear ring (312) and the gear (313) mesh with each other.

5. A biogas power generation device with improved energy utilization efficiency according to claim 4, characterized in that: The stirring assembly (31) also includes a stirring plate (311), a cutter (316), and a material passage hole (317). The stirring plate (311) is fixed circumferentially on the surface of the first stirring shaft (315). The stirring plate (311) has an arc-shaped structure. One end of the stirring plate (311) is in contact with the inner wall of the separator (22). The surface of the stirring plate (311) is provided with material passage holes (317) at equal intervals. The inner wall of the material passage hole (317) is fixed with a cutter (316).

6. A biogas power generation device with improved energy utilization efficiency according to claim 1, characterized in that: The high-efficiency stirring mechanism (3) also includes a drive motor (32). The drive motor (32) is installed at the center of the surface of the base (1). The input end of the drive motor (32) is electrically connected to the output end of the control key (11). The output end of the drive motor (32) is fixed with a rotating shaft through a coupling. One end of the rotating shaft is fixedly connected to one end of the second stirring shaft (33).

7. A biogas power generation device with improved energy utilization efficiency according to claim 1, characterized in that: The surface of the base (1) is equipped with a biogas filter (4). The inlet of the biogas filter (4) passes through the biogas fermentation tank (2) through a pipe and extends into the interior of the fermentation tank (21). The outlet of the biogas filter (4) is connected to the biogas generator (6) through a pipe.

8. A biogas power generation device with improved energy utilization efficiency according to claim 1, characterized in that: The surface of the base (1) is provided with a waste gas heating mechanism (5), which is connected to the biogas fermentation tank (2) and the biogas generator (6) respectively. The waste gas heating mechanism (5) includes a water pipe (51), a boiler (52), a connecting water pipe (53), a heat exchanger (54), a three-way water inlet pipe (55), and a water pump (56). The boiler (52) is fixed on the surface of the base (1). The boiler (52) has a double-layer structure. The inner layer is used for water storage, and the outer layer is used for heating the water in the inner layer. The outer layer is connected to the three-way exhaust pipe (61). The bottom of the boiler (52) is fixed with a water pipe (51). The surface of the biogas generator (6) is equipped with a heat exchanger (54). A water pump (56) is installed on one side of the biogas fermentation tank (2). The input end of the water pump (56) is electrically connected to the output end of the control key (11). One end of the water pump (56) extends into the interior of the base (1) through a pipe. One end of one of the water pumps (56) is connected to one end of the water guide pipe (51). A connecting water pipe (53) is fixed to the outlet end of the heat exchanger (54). The connecting water pipe (53) is connected to the inlet end of the boiler (52). The three-way exhaust pipe (61) is wrapped around the surface of the connecting water pipe (53). A three-way inlet pipe (55) is fixed to the inlet end of the heat exchanger (54). One end of the three-way inlet pipe (55) is connected to one end of the water pump (56).

9. A biogas power generation device with improved energy utilization efficiency according to claim 8, characterized in that: The exhaust gas heating mechanism (5) also includes a water level thermometer (57). The water level thermometer (57) is installed on the inner wall at the top of the biogas fermentation tank (2). The water level thermometer (57) is located on the outside of the fermentation tank (21). The input end of the water level thermometer (57) is electrically connected to the output end of the control key (11).

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