A biogas fermentation diversion and transportation control device

Abstract

This utility model relates to a biogas fermentation diversion and conveying control device, including an annular base. A fermentation tank is fixedly connected to the upper end of the annular base. A wastewater inlet is provided on the left side of the upper end of the fermentation tank, and a water inlet pipe is connected to the wastewater inlet flange. A bacteria inlet is provided on the front side of the upper end of the fermentation tank. An exhaust pipe is provided on the right side of the upper end of the fermentation tank, and a biogas diversion box is connected to the right flange of the exhaust pipe. The biogas diversion box includes a box body. A partition assembly is provided in the center of the box body, which divides the box body into two areas: a reflux area and a conveying area. The reflux area is located on the front side of the box body. A reflux port is provided at the center of the right side of the reflux area. A reflux pipe is connected to the right flange of the reflux port. The left flange of the lower end of the reflux pipe is connected to the upper right side of the fermentation tank. This device has the advantages of flexible biogas diversion and distribution and increased gas production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of biogas fermentation technology, and in particular to a biogas fermentation diversion and conveying control device. Background Technology

[0002] Biogas fermentation, also known as anaerobic digestion or anaerobic fermentation, refers to the process by which organic matter (such as human and livestock manure, straw, weeds, etc.) is decomposed and metabolized by various microorganisms under specific moisture, temperature, and anaerobic conditions, ultimately forming a combustible mixture of gases such as methane and carbon dioxide. Biogas fermentation systems are based on the principles of biogas fermentation, aiming at energy production and ultimately achieving the comprehensive utilization of biogas, biogas slurry, and biogas residue.

[0003] Patent application number CN202420958375.8 is a Chinese utility model patent, disclosing a temperature control device for biogas fermentation, including a spiral tube, a connecting pipe, a temperature sensor, a controller, a circular box, a rectangular box, a rectangular frame, an electrically controlled valve, a short pipe, a glass plate, an electric heating wire, and an electric fan. This utility model has a reasonable structural design. Sunlight irradiates the glass plate, raising the temperature inside the rectangular frame and conducting the heat to the connecting pipe, or the electric heating wire generates heat and conducts it to the connected connecting pipe. Simultaneously, the electric fan located in the circular box facilitates the circulation of heat to the spiral tube connected by the connecting pipe, enabling heat conduction to heat the fermentation slurry and maintain the temperature environment required for the reproduction of microorganisms. The electrically controlled valve facilitates the discharge of high-temperature heat from the biogas digester, achieving a cooling effect and preventing explosions due to continuously rising temperatures. However, this device has the following problems: firstly, it cannot achieve biogas diversion; secondly, it cannot adjust the biogas flow distribution ratio. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies. This device divides the biogas distribution box into a recirculation zone and a delivery zone using a partition assembly. When biogas produced in the fermenter enters the inlet of the biogas distribution box through the exhaust pipe, it first flows into the recirculation zone. An electric slider, along with a connecting rod, drives a movable plate to slide left and right, dynamically adjusting the ventilation gap between the movable plate and the fixed plate. This controls the gas flow rate into the delivery zone, solving the technical problem that the existing device cannot achieve biogas distribution and adjust the biogas flow rate ratio.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A biogas fermentation diversion and conveying control device includes an annular base, with a fermentation tank fixedly connected to its upper end. A wastewater inlet is located on the left side of the upper end of the fermentation tank, with a flange connecting it to a water inlet pipe. A biogas inlet is located on the front side of the upper end of the fermentation tank, and an exhaust pipe is located on the right side of the upper end of the fermentation tank. A flange on the right side of the exhaust pipe connects to a biogas diversion box. The biogas diversion box includes a box body, with a partition assembly at the center of the box body dividing the box body into two areas: a reflux zone and a conveying zone. The reflux zone is located on the front side of the box body, with a reflux port at the center of its right side. A flange on the right side of the reflux port connects to a reflux pipe, and a flange on the left side of the lower end of the reflux pipe connects to the upper right side of the fermentation tank. The conveying zone is located on the rear side of the box body, with a conveying port at the center of its right side. A flange on the right side of the conveying port connects to a conveying pipe.

[0007] As a preferred embodiment, an air inlet is provided on the front left side of the housing, and the air inlet flange is connected to the exhaust pipe. The air inlet is located on the left side of the recirculation zone.

[0008] As a preferred embodiment, the partition assembly includes a fixed plate and a movable plate. The fixed plate is vertically fixed to the right side of the center of the inner wall of the box and is fixedly connected to the upper and lower inner walls of the box. An air gap is formed between the left end of the fixed plate and the left side of the inner wall of the box.

[0009] As a preferred embodiment, the movable plate is vertically disposed in front of the fixed plate, and the rear side of the movable plate is slidably attached to the front side of the fixed plate. The movable plate can slide in the left and right direction inside the box, and the left and right sliding of the movable plate can expose or block the ventilation gap.

[0010] As a preferred embodiment, a connecting rod is fixedly connected to the right front end of the movable plate, and a device block is fixedly connected to the front end of the connecting rod. A guide rail is slidably connected to the lower end of the device block, and the guide rail is fixedly connected to the center position of the lower side of the inner wall of the reflux zone.

[0011] As another preferred embodiment, the device block and the connecting rod are both located in the internal area of ​​the recirculation zone, the location of the device block corresponds to the location of the recirculation port and the air inlet, and a sealing gasket is provided on the side of the device block facing the recirculation port.

[0012] The beneficial effects of this utility model are:

[0013] (1) In this utility model, the fixed plate and the movable plate in the partition assembly are set to form an adjustable ventilation gap, thereby diverting biogas. When the biogas generated in the fermenter enters the air inlet of the diversion box through the exhaust pipe, it first flows into the return zone side. Through the sliding connection between the equipment block and the guide rail, the equipment block can move on the guide rail. When the equipment block moves, the connecting rod will drive the movable plate to slide to the right along the front side of the fixed plate inside the box, adjusting the size of the ventilation gap between the fixed plate and the box, thereby controlling the gas flow rate into the conveying zone. When the movable plate moves to the right, the ventilation gap increases, and more biogas can enter the conveying zone through the gap and be sent to the subsequent utilization unit through the conveying pipe. When the movable plate moves to the left until the gap is closed, most of the biogas cannot enter the conveying zone. The biogas is reintroduced into the upper space of the fermenter from the return port through the return pipe. The biogas that re-enters the fermenter can disperse the original gas inside the fermenter, effectively promoting the uniform mixing of the fermented biogas and improving the gas production efficiency.

[0014] (2) In this utility model, the position of the equipment block is set between the return port and the air inlet, and a sealing gasket is provided on the side of the equipment block facing the return port. When it is completely moved to the left, the airtightness of the return port can be sealed, ensuring that the return path is completely cut off.

[0015] (3) In this utility model, the biogas diversion box is set up to clearly divide the space into a return zone and a delivery zone through the partition assembly. The two zones share a common air inlet and can only communicate with each other through the controllable channel of the ventilation gap. This allows the two functions of biogas return and external delivery to not interfere with each other and can be switched as needed. During the low gas consumption period, the ventilation gap is closed by the movable plate to send the excess biogas back to the fermentation tank to promote the uniform mixing of fermentation materials and improve gas production efficiency. During the peak gas consumption period, the delivery mode is switched to the delivery mode and the return port is blocked by the movable plate to maximize the output of energy for external use.

[0016] In summary, this device has the advantages of flexible biogas diversion and distribution, and increased gas production efficiency, making it particularly suitable for the field of biogas fermentation technology. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the biogas diversion box in this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the biogas diversion box and the partition assembly in this utility model. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figures 1 to 3 As shown, this utility model provides a biogas fermentation diversion and conveying control device, including an annular base 1, which supports the entire device. A fermentation tank 2 is fixedly connected to the upper end of the annular base 1. A wastewater inlet 22 is provided on the upper left side of the fermentation tank 2, and a water inlet pipe is connected to the wastewater inlet 22 via a flange. Wastewater containing organic matter is input into the fermentation tank 2 through the wastewater inlet 22. An inoculum inlet 23 is provided on the upper front side of the fermentation tank 2. The inoculum inlet 23 includes a sealing door hinged to the fermentation tank 2. Closing the sealing door of the inoculum inlet 23 maintains the airtightness of the fermentation tank 2. Anaerobic bacteria are periodically added to the inoculum inlet 23 to maintain the fermentation environment inside the fermentation tank 2. An exhaust pipe 24 is provided on the upper right side of the fermentation tank 2, and a biogas diversion box 3 is connected to the right flange of the exhaust pipe 24. The biogas diversion box 3 includes a box body 31, and a partition assembly 32 is provided at the center of the box body 31. The partition assembly 32 divides the interior of the box body 31... The system is divided into two areas: a reflux zone 33 and a delivery zone 34. The reflux zone 33 is located inside the front of the housing 31. A reflux port 331 is located at the center of the right side of the reflux zone 33. A flange on the right side of the reflux port 331 is connected to a reflux pipe 332. The flange on the left side of the lower end of the reflux pipe 332 is connected to the upper right side of the fermenter 2. A one-way valve is located at the lower end of the reflux pipe 332. Biogas is reintroduced into the upper space of the fermenter 2 from the reflux port 331 through the reflux pipe 332. The biogas re-entering the fermenter 2 can disperse the original gas inside the fermenter 2, effectively promoting the uniform mixing of the fermented biogas and improving the gas production efficiency. The delivery zone 34 is located inside the rear of the housing 31. A delivery port 341 is located at the center of the right side of the delivery zone 34. A flange on the right side of the delivery port 341 is connected to a delivery pipe 342. The delivery pipe 342 is connected to the subsequent utilization unit, which includes a biogas purification unit and a utilization unit.

[0024] Furthermore, an air inlet 311 is provided on the front left side of the box 31, and a one-way valve is provided at the air inlet 311. The one-way valve prevents biogas from flowing back into the fermentation tank 2 and ensures stability. The air inlet 311 is flanged to the exhaust pipe 24. The air inlet 311 is located on the left side of the return zone 33. All biogas entering the biogas diversion box 3 first enters the return zone 33, rather than directly impacting the conveying zone 34.

[0025] Furthermore, the partition assembly 32 includes a fixed plate 321 and a movable plate 322. The fixed plate 321 and the movable plate 322 in the partition assembly 32 cooperate to form an adjustable ventilation gap, thereby diverting biogas. The fixed plate 321 is vertically fixed to the right side of the center of the inner wall of the box 31 and is fixedly connected to the upper and lower inner walls of the box 31. A ventilation gap is formed between the left end of the fixed plate 321 and the left side of the inner wall of the box 31. The ventilation gap is a gap left between the left edge of the fixed plate 321 and the left inner wall of the box 31. The opening size can be changed or even completely closed when the movable plate 322 moves. The return zone 33 and the conveying zone 34 share a common air inlet 311 and can only communicate with each other through the controllable channel of the ventilation gap.

[0026] Furthermore, the movable plate 322 is vertically disposed in front of the fixed plate 321, and the rear side of the movable plate 322 slides against the front side of the fixed plate 321. When the movable plate 322 moves to the right, the left side of the movable plate 322 gradually detaches from the left inner wall of the box 31, exposing the ventilation gap portion that was originally covered by the movable plate 322, allowing gas to flow into the conveying area 34. When the movable plate 322 moves completely to the left, the left end of the movable plate 322 adheres to the left side of the inner wall of the box 31, covering the ventilation gap inlet, thereby gradually closing the ventilation gap until it is completely blocked. The movable plate 322 can slide in the left and right direction inside the box 31. The left and right sliding of the movable plate 322 can expose or block the ventilation gap. The left and right sliding of the movable plate 322 forms a kind of "gate". Flexible sealing strips can be embedded in the upper and lower edges of the movable plate 322 to ensure sealing.

[0027] Furthermore, a connecting rod 3221 is fixedly connected to the front right side of the movable plate 322. The connecting rod 3221 is a rigid metal rod that connects the movable plate 322 and the equipment block 323. The front end of the connecting rod 3221 is fixedly connected to the equipment block 323. The lower end of the equipment block 323 is slidably connected to the guide rail 324. An electric slider is provided at the bottom of the equipment block 323. The electric slider is electrically connected to an external control center. Through the sliding connection between the electric slider and the guide rail 324, left and right sliding inside the housing 31 is realized. The control center outputs commands to adjust... The displacement of the electric slider controls the opening and closing position of the movable plate 322. The control center is a PLC controller. During periods of low gas consumption, the device block 323, together with the movable plate 322, slides to the left to close the ventilation gap and send excess biogas back to the fermentation tank 2 to promote uniform mixing of biogas inside the fermentation tank 2 and improve gas production efficiency. During peak gas consumption, the mode is switched to delivery mode and the movable plate 322 slides to the right to block the return port 331, maximizing the output of energy for external use. The guide rail 324 is fixedly connected to the center of the lower side of the inner wall of the return zone 33.

[0028] Furthermore, both the device block 323 and the connecting rod 3221 are located inside the reflux zone 33. The position of the device block 323 corresponds to the positions of the reflux port 331 and the air inlet 311. A sealing gasket is provided on the side of the device block 323 facing the reflux port 331. The sealing gasket can be made of rubber or silicone. When the device block 323 slides to the right to the bottom, the sealing gasket is pressed against the outlet end face of the reflux port 331 to form an airtight seal and cut off the reflux path.

[0029] Working process: First, sewage is discharged into fermentation tank 2 through sewage inlet 22. Then, anaerobic bacteria are introduced through inlet 23. The sewage and anaerobic bacteria then undergo anaerobic fermentation inside fermentation tank 2 to produce biogas. The biogas produced by anaerobic fermentation accumulates in the upper part of fermentation tank 2. The biogas enters the inlet 311 of biogas distribution box 3 through exhaust pipe 24 and fills the return flow area 33. The opening and closing of movable plate 322 and ventilation gap can control the distribution of biogas. During off-peak gas consumption periods... As the device block 323 slides on the guide rail 342, the device block 323, together with the connecting rod 3221, drives the movable plate 322 to slide to the left to close the ventilation gap and send excess biogas back to the fermentation tank 2 to promote the uniform mixing of fermentation materials and improve gas production efficiency. During peak gas consumption, the device block 323 switches to the conveying mode and slides to the right inside the housing 31 via the movable plate 322, driving the connecting rod 3221 and the sealing gasket of the movable plate 322 to block the return port 331, maximizing the output of energy for external use.

[0030] In the description of this utility model, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0031] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0032] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A biogas fermentation diversion and conveying control device, characterized in that: The system includes an annular base (1), with a fermentation tank (2) fixedly connected to its upper end. A wastewater inlet (22) is located on the left side of the upper end of the fermentation tank (2), with a flange connecting the wastewater inlet (22) to a water inlet pipe. A bacteria inlet (23) is located on the front side of the upper end of the fermentation tank (2), and an exhaust pipe (24) is located on the right side of the upper end of the fermentation tank (2). A flange on the right side of the exhaust pipe (24) connects to a biogas distribution box (3). The biogas distribution box (3) includes a box body (31), with a partition assembly (32) located at the center of the box body (31). The partition assembly (32) divides the interior of the box body (31) into sections. It is divided into two areas, namely the reflux zone (33) and the conveying zone (34). The reflux zone (33) is located inside the front side of the box (31). The reflux port (331) is provided at the center of the right side of the reflux zone (33). The flange on the right side of the reflux port (331) is connected to the reflux pipe (332). The flange on the left side of the lower end of the reflux pipe (332) is connected to the upper right side of the fermenter (2). The conveying zone (34) is located inside the rear side of the box (31). The conveying port (341) is provided at the center of the right side of the conveying zone (34). The flange on the right side of the conveying port (341) is connected to the conveying pipe (342).

2. The biogas fermentation diversion and conveying control device according to claim 1, characterized in that, The box (31) has an air inlet (311) on the front left side, and the air inlet (311) is flange-connected to the exhaust pipe (24). The air inlet (311) is located on the left side of the recirculation zone (33).

3. The biogas fermentation diversion and conveying control device according to claim 1, characterized in that, The partition assembly (32) includes a fixed plate (321) and a movable plate (322). The fixed plate (321) is vertically fixed to the right side of the center of the inner wall of the box (31) and is fixedly connected to the upper and lower inner walls of the box (31). An air gap is formed between the left end of the fixed plate (321) and the left side of the inner wall of the box (31).

4. The biogas fermentation diversion and conveying control device according to claim 3, characterized in that, The movable plate (322) is vertically arranged in front of the fixed plate (321). The rear side of the movable plate (322) is slidably attached to the front side of the fixed plate (321). The movable plate (322) can slide in the left and right direction inside the box (31). The left and right sliding of the movable plate (322) can expose or block the ventilation gap.

5. The biogas fermentation diversion and conveying control device according to claim 4, characterized in that, The front right side of the movable plate (322) is fixedly connected to the connecting rod (3221), the front end of the connecting rod (3221) is fixedly connected to the device block (323), the lower end of the device block (323) is slidably connected to the guide rail (324), and the guide rail (324) is fixedly connected to the center position of the lower side of the inner wall of the reflux zone (33).

6. The biogas fermentation diversion and conveying control device according to claim 5, characterized in that, The device block (323) and the connecting rod (3221) are both located in the internal area of ​​the reflux zone (33). The location of the device block (323) corresponds to the location of the reflux port (331). A sealing gasket is provided on the side of the device block (323) facing the reflux port (331).

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