Biogas collection and utilization device

Abstract

This utility model discloses a biogas collection and utilization device, belonging to the field of biogas collection technology. It includes a collection tank for collecting biogas, with a deodorizing filter assembly connected to one side of the collection tank for deodorizing and filtering the biogas. The other end of the deodorizing filter assembly is connected to a fermentation tank for fermenting manure. An air inlet valve is provided at the top of the fermentation tank. The deodorizing filter assembly includes a filter box, which is connected to the collection tank and the fermentation tank via connecting pipes. The filter box has a filtration chamber and an adsorption chamber inside, and the filtration chamber and adsorption chamber are connected. A filter plate is installed inside the filtration chamber, and activated carbon is installed inside the adsorption chamber to adsorb odors from the biogas. This solution avoids impurities and odors in the collected biogas, improves the collection quality of the biogas, and makes the treated biogas more suitable for various application scenarios.

Description

Technical Field

[0001] This utility model relates to the field of biogas collection technology, specifically a biogas collection and utilization device. Background Technology

[0002] Marsh gas, as the name suggests, is gas found in swamps and wetlands.

[0003] The current biogas production and collection process generally involves pouring manure into a septic tank for fermentation. After fermentation, the biogas enters a collection tank through an exhaust pipe for collection and utilization. However, because the biogas is collected directly without filtration in the current technology, the collected biogas contains impurities and odors, which reduces the quality of biogas collection and causes inconvenience for the reuse of biogas.

[0004] For example, the biogas collection device provided by announcement number CN217025925U includes a reaction chamber, a fermentation chamber, a discharge pipe and a conveying spiral blade. The fermentation chamber is installed on the reaction chamber, and the discharge pipe is fixedly connected and connected to the fermentation chamber. The discharge pipe is fixedly connected and connected to the reaction chamber, and the conveying spiral blade is connected to the fermentation chamber. The fermentation chamber is equipped with a first motor, and the output shaft of the first motor is connected to the conveying spiral blade. It also includes a stirring blade, which is connected to the reaction chamber.

[0005] According to the cited documents, existing technologies do indeed involve the direct collection of fermented biogas without filtration, resulting in impurities and odors in the collected biogas, which reduces the quality of biogas collection. Furthermore, the presence of odors in the biogas makes it unsuitable for different application scenarios. Therefore, we need to propose a biogas collection and utilization device. Utility Model Content

[0006] The purpose of this invention is to provide a biogas collection and utilization device. The biogas after fermentation is filtered by the filter plate in the filter box. After filtration, it enters the adsorption chamber, where the activated carbon adsorbs the odor in the biogas and then transfers it to the collection tank for collection. This solution avoids impurities and odors in the collected biogas, improves the quality of biogas collection, and makes the treated biogas more suitable for various application scenarios, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a biogas collection and utilization device, comprising a collection tank for collecting biogas, a deodorizing filter assembly for deodorizing and filtering biogas connected to one side of the collection tank, and a fermentation tank for fermenting manure connected to the other end of the deodorizing filter assembly, wherein an air inlet valve is provided at the top of the fermentation tank, the deodorizing filter assembly includes a filter box, the filter box is connected to the collection tank and the fermentation tank respectively through connecting pipes, the filter box has a filter chamber and an adsorption chamber inside, and the filter chamber and the adsorption chamber are connected, the inner cavity of the filter chamber is provided with a filter plate, and the inner cavity of the adsorption chamber is filled with activated carbon for adsorbing odors in biogas.

[0008] Preferably, the filter box includes a box body and a box cover. The top of the box body is integrally formed with a locking block around its four sides, and the bottom of the box cover is bolted with an elastic connecting plate around its four sides. The surface of the elastic connecting plate is provided with a locking groove that matches the locking block, and the locking block engages with the inner cavity of the locking groove.

[0009] Preferably, both sides of the filter plate are integrally formed with support plates, and the inner side wall of the housing is provided with a support groove adapted to the support plate, and the support plate is slidably connected to the inner cavity of the support groove.

[0010] Preferably, it also includes a positioning structure for positioning the filter plate, the positioning structure including a positioning hole, the positioning hole being opened on the outer side wall of the housing and communicating with the inner cavity of the support groove, the inner cavity of the positioning hole being provided with a positioning pin, and the surface of the support plate being provided with a fixing hole adapted to the positioning pin.

[0011] Preferably, the surface of the box body is provided with a slot, the inner cavity of the slot is connected to the inner cavity of the adsorption chamber, and a glass plate is installed in the inner cavity of the slot, and the glass plate is transparent.

[0012] Preferably, the system also includes a mixing structure for mixing the feces. The mixing structure includes a stepper motor, which is fixedly installed at the top of the fermentation tank. The output shaft of the stepper motor is connected to a rotating rod via a reducer, and the rotating rod is rotatably connected to the surface of the fermentation tank via a bearing. The bottom end of the rotating rod penetrates the fermentation tank and is provided with several sets of stirring rods.

[0013] Preferably, connecting rods are welded to both sides of the rotating rod, and a fixing seat is welded to the other side of the connecting rod. A scraper for scraping fecal residue in the fermentation tank is fixedly connected to the surface of the fixing seat by bolts.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model provides a biogas collection and utilization device. Through the setting of a filtration chamber, when biogas passes through the filtration chamber, the filter plates inside the filtration chamber can filter out particulate matter and other impurities contained in the biogas. Through the setting of an adsorption chamber, the biogas flows into the adsorption chamber after passing through the filtration chamber, where the activated carbon inside the adsorption chamber adsorbs and removes odors contained in the biogas. This solution avoids the presence of impurities and odors in the collected biogas, improves the quality of biogas collection, and makes the treated biogas more suitable for various application scenarios.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the filter box of this utility model;

[0019] Figure 3 This is a schematic diagram of a partial cross-section of the fermenter of this utility model;

[0020] Figure 4 This is a schematic diagram of the hybrid structure of this utility model.

[0021] In the diagram: 1. Collection tank; 2. Fermentation tank; 3. Air inlet valve; 4. Filter box; 41. Box body; 42. Box cover; 43. Locking block; 44. Elastic connecting plate; 45. Locking groove; 5. Filter plate; 6. Activated carbon; 7. Support plate; 8. Support groove; 9. Positioning structure; 91. Positioning hole; 92. Positioning pin; 93. Fixing hole; 10. Glass plate; 11. Mixing structure; 111. Stepper motor; 112. Rotating rod; 113. Stirring rod; 114. Connecting rod; 115. Scraper. 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] Please see Figure 1-4This utility model provides a technical solution: a biogas collection and utilization device, including a collection tank 1 for collecting biogas, a deodorizing filter assembly for deodorizing and filtering biogas connected to one side of the collection tank 1, a fermentation tank 2 for fermenting manure connected to the other end of the deodorizing filter assembly, an air inlet valve 3 provided at the top of the fermentation tank 2, the deodorizing filter assembly including a filter box 4, the filter box 4 being connected to the collection tank 1 and the fermentation tank 2 respectively through connecting pipes, the filter box 4 having a filter chamber and an adsorption chamber inside, and the filter chamber and the adsorption chamber being connected, the filter plate 5 being provided in the inner cavity of the filter chamber, and the activated carbon 6 being installed in the inner cavity of the adsorption chamber for adsorbing odors in biogas;

[0024] When collecting biogas, manure is poured into the inlet of fermentation tank 2. The manure in fermentation tank 2 ferments to produce biogas, which enters the filter box 4 through the connecting pipe. The filter plate 5 intercepts solid impurities in the biogas, preventing them from entering the subsequent treatment stage. The filtered biogas flows into the adsorption chamber, where activated carbon 6, with its strong adsorption capacity, effectively adsorbs odorous gases such as hydrogen sulfide in the biogas, improving the purity and quality of the biogas. The filter plate 5 and activated carbon 6 form a dual purification structure to filter and purify the biogas. This method avoids impurities and odors in the collected biogas, improves the quality of biogas collection, and makes the treated biogas more suitable for various application scenarios.

[0025] This embodiment also includes the ability to connect a compressed air device to the air inlet valve 3. When it is necessary to discharge the residual biogas in the fermentation tank 2 into the collection tank 1, the compressed air device can be turned on to inject compressed air into the air inlet valve 3. The compressed air accumulates in the fermentation tank 2 and pushes the biogas into the connecting pipe. At the same time, when discharging, compressed air can be injected into the fermentation tank 2 and the discharge port of the fermentation tank 2 can be opened, so that the air in the fermentation tank 2 pushes the manure out from the discharge port and accelerates the discharge speed.

[0026] This embodiment also includes a one-way valve at the top of the collection tank 1 for connecting to the connecting pipe. The one-way valve prevents biogas from flowing back into the filter box 4 after entering the collection tank 1.

[0027] The filter box 4 includes a box body 41 and a box cover 42. The top of the box body 41 is integrally formed with locking blocks 43 around its four sides. The bottom of the box cover 42 is bolted with elastic connecting plates 44 around its four sides. The surface of the elastic connecting plates 44 has slots 45 that are adapted to the locking blocks 43. The locking blocks 43 and the inner cavity of the slots 45 engage and lock together. When connecting the box cover 42 to the box body 41, simply place the box cover 42 on the box body 41 and insert the locking blocks 43 into the inner cavity of the slots 45 to complete the fixing. When disassembling, move the elastic connecting plate 44 to move the locking blocks 43 out of the inner cavity of the slots 45 to release the connecting plate and disassemble the box cover 42. Through the engagement of the locking blocks 43 and the slots 45, compared with the traditional screw fastening method, no complicated tools are needed to achieve quick assembly of the box cover 42 and the box body 41.

[0028] This embodiment also includes a sealing gasket glued to the bottom of the cover 42. The sealing gasket increases the sealing between the cover 42 and the body 41, thus preventing biogas leakage during biogas filtration and purification.

[0029] This embodiment also includes a beveled surface at the top of the locking block 43. The beveled surface makes the contact surface between the locking block 43 and the elastic connecting plate 44 inclined. When the box cover 42 is closed, the elastic connecting plate 44 contacts the locking block 43. The elastic connecting plate 44 will move outward through the beveled surface of the locking block 43. When it moves to the position of the slot 45, the elastic connecting plate 44 resets, so that the locking block 43 enters the inner cavity of the slot 45, which facilitates the combination of the box cover 42 and the box body 41.

[0030] Both sides of the filter plate 5 are integrally formed with support plates 7. The inner side wall of the housing 41 is provided with support grooves 8 that are adapted to the support plates 7. The inner cavity of the support plates 7 and the support grooves 8 are slidably connected. Through the cooperation of the support plates 7 and the support grooves 8, the filter plate 5 and the housing 41 can be combined or disassembled by plugging and unplugging, which provides convenience for the subsequent replacement, maintenance and cleaning of the filter plate 5.

[0031] It also includes a positioning structure 9 for positioning the filter plate 5. The positioning structure 9 includes a positioning hole 91, which is opened on the outer side wall of the housing 41 and communicates with the inner cavity of the support groove 8. A positioning pin 92 is provided in the inner cavity of the positioning hole 91. A fixing hole 93 that matches the positioning pin 92 is opened on the surface of the support plate 7. When the filter plate 5 is combined with the housing 41, the positioning pin 92 is taken out and inserted into the positioning hole 91 and penetrates into the inner cavity of the fixing hole 93. This allows the positioning of the support plate 7 to be positioned in conjunction with the positioning hole 91, preventing the position of the filter plate 5 from shifting after combination and improving the stability of the filter plate 5 in the inner cavity of the housing 41.

[0032] This embodiment also includes a self-locking thread structure that can be opened on the outer surface of the positioning pin 92, and a thread groove that matches the outer surface of the positioning pin 92 is opened in the inner cavity of the fixing hole 93. The positioning pin 92 is used to position the filter plate 5 by locking the thread.

[0033] This embodiment also includes a positioning pin 92 which can be made of metal. A magnet is bonded and fixed to the inner cavity of the fixing hole 93. The positioning pin 92 is inserted into the positioning hole 91 and passes through the inner cavity of the fixing hole 93. The positioning pin 92 is magnetically attracted by the magnet, which improves the stability of the positioning pin 92 in the inner cavity of the fixing hole 93.

[0034] The surface of the box 41 has a slot, and the inner cavity of the slot of the box 41 is connected to the inner cavity of the adsorption chamber. A glass plate 10 is installed in the inner cavity of the slot of the box 41, and the glass plate 10 is transparent. The glass plate 10 is made of a high temperature resistant and corrosion resistant material. Through the setting of the glass plate 10, the staff can observe the usage of the activated carbon 6 in the adsorption chamber from the outside of the box 41. When the color of the activated carbon 6 changes after long-term use, the staff needs to replace the activated carbon 6.

[0035] It also includes a mixing structure 11 for mixing manure. The mixing structure 11 includes a stepper motor 111, which is fixedly installed at the top of the fermentation tank 2. The output shaft of the stepper motor 111 is connected to a rotating rod 112 through a reducer. The rotating rod 112 is rotatably connected to the surface of the fermentation tank 2 through a bearing. The bottom end of the rotating rod 112 passes through the fermentation tank 2 and is provided with several sets of stirring rods 113. When the stepper motor 111 is started, the output shaft of the stepper motor 111 drives the rotating rod 112 to rotate through the reducer. The rotating rod 112 drives the several sets of stirring rods 113 at the bottom end to stir the manure, so that the manure in the fermentation tank 2 is mixed evenly, thereby improving the fermentation speed of the manure in the fermentation tank 2 and improving the biogas production efficiency.

[0036] This embodiment also includes a stepper motor 111 connected to a power supply device via a power cord, and a control switch connected via a connecting wire.

[0037] The stepper motor 111 mentioned in this utility model is a mature existing technology in the mechanical field. This utility model does not provide any further protection or limitation for the stepper motor 111. Products with the same function can be purchased and used on the market.

[0038] Connecting rods 114 are welded to both sides of the rotating rod 112. A fixed seat is welded to the other side of the connecting rod 114. A scraper 115 for scraping fecal residue in the fermentation tank 2 is fixedly connected to the surface of the fixed seat by bolts. When the rotating rod 112 rotates, the fixed seat is rotated through the connecting rod 114. The scraper 115 at the other end of the fixed seat scrapes the fecal residue adhering to the inner wall of the fermentation tank 2, so as to avoid the fecal residue from adhering to the inner wall of the fermentation tank 2 and affecting the mixing efficiency.

[0039] In practical use: When collecting biogas, pour the manure into the feed inlet of fermentation tank 2, then seal the feed inlet and start the stepper motor 111. The output shaft of the stepper motor 111 drives the rotating rod 112 to rotate through the reducer. The rotating rod 112 drives several sets of stirring rods 113 to mix the manure in fermentation tank 2. After mixing, the mixture is left to ferment and produce biogas. After the biogas accumulates, it can enter the filter box 4 through the connecting pipe. When the biogas enters the filter chamber and passes through the filter plate 5, the filter plate 5 intercepts solid impurities in the biogas to prevent them from entering the subsequent treatment stage, thus filtering the biogas. The filtered biogas flows into the adsorption chamber, where activated carbon 6, with its strong adsorption capacity, can effectively adsorb odorous gases such as hydrogen sulfide in the biogas, improving the purity and quality of the biogas. The filter plate 5 and activated carbon 6 form a dual purification structure to filter and purify the biogas. The above scheme avoids impurities and odors in the collected biogas, improves the collection quality of biogas, and makes the treated biogas more suitable for various application scenarios.

[0040] 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 biogas collection and utilization device, characterized in that, include: A collection tank (1) for collecting biogas and a deodorizing filter assembly for deodorizing and filtering biogas; One end of the collection tank (1) is provided with a fermentation tank (2) for fermenting the feces, and the top of the fermentation tank (2) is provided with an air inlet valve (3) for connecting a compression and air filling device. The fermentation tank (2) and the collection tank (1) are connected by a deodorizing filter assembly. The deodorizing filter assembly includes a filter box (4), which is connected to the collection tank (1) and the fermentation tank (2) respectively through connecting pipes. The filter box (4) has a filter chamber and an adsorption chamber inside, and the filter chamber and the adsorption chamber are connected. The filter chamber is equipped with a filter plate (5), and the adsorption chamber is filled with activated carbon (6) for adsorbing odors in biogas.

2. The biogas collection and utilization equipment according to claim 1, characterized in that: The filter box (4) includes a box body (41) and a box cover (42) located at the top of the box body (41). The top of the box body (41) is integrally formed with a locking block (43) around its perimeter. The bottom of the box cover (42) is bolted with an elastic connecting plate (44) around its perimeter. The surface of the elastic connecting plate (44) is provided with a slot (45) that matches the locking block (43).

3. The biogas collection and utilization equipment according to claim 2, characterized in that: The filter plate (5) is provided with support plates (7) on both sides, and the inner wall of the box (41) is provided with support grooves (8) that are compatible with the support plates (7).

4. The biogas collection and utilization equipment according to claim 3, characterized in that: It also includes a positioning structure (9) for positioning the filter plate (5). The positioning structure (9) includes a positioning hole (91). The positioning hole (91) is opened on the outer side wall of the box (41) and communicates with the inner cavity of the support groove (8). The inner cavity of the positioning hole (91) is provided with a positioning pin (92). The surface of the support plate (7) is provided with fixing holes (93) that are compatible with the positioning pins (92).

5. A biogas collection and utilization device according to claim 2, characterized in that: The surface of the box (41) is provided with a slot, the inner cavity of the slot of the box (41) is connected to the inner cavity of the adsorption chamber, and a glass plate (10) is installed in the inner cavity of the slot of the box (41), and the glass plate (10) is transparent.

6. The biogas collection and utilization equipment according to claim 1, characterized in that: It also includes a mixing structure (11) for mixing the feces. The mixing structure (11) includes a stepper motor (111). The stepper motor (111) is fixedly installed on the top of the fermentation tank (2). The output shaft of the stepper motor (111) is connected to a rotating rod (112) through a reducer. The rotating rod (112) is rotatably connected to the surface of the fermentation tank (2). The bottom end of the rotating rod (112) penetrates the fermentation tank (2) and is provided with several sets of stirring rods (113).

7. A biogas collection and utilization device according to claim 6, characterized in that: The rotating rod (112) has connecting rods (114) symmetrically distributed on both sides. The connecting rods (114) are connected to fixed seats. The surface of the fixed seats is connected to a scraper (115) for scraping fecal residue in the fermentation tank (2).

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