Chicken manure circulating fermentation device adopting biogas slurry backflow transmission

Abstract

The utility model discloses a biogas slurry backflow transmission chicken manure circulation fermentation device, and relates to the technical field of fermentation equipment. The device structurally comprises a chicken manure pool, a first anaerobic fermentation tank, a second anaerobic fermentation tank and a biogas slurry temporary storage box, the first anaerobic fermentation tank is communicated with the second anaerobic fermentation tank and the biogas slurry temporary storage box through a three-way pipeline; the chicken manure pool is communicated with the first anaerobic fermentation tank through a first pipeline, and a manure pump is mounted on the first pipeline; the chicken manure pool is communicated with the temporary biogas slurry storage tank through a biogas slurry backflow pipeline, and a sewage pump is mounted on the biogas slurry backflow pipeline. The three-way pipeline is arranged between the first anaerobic fermentation tank and the second anaerobic fermentation tank, and the biogas slurry temporary storage box is additionally arranged, so that the biogas slurry fermented by the first anaerobic fermentation tank flows back to the chicken manure pool by using the biogas slurry backflow pipeline and the sewage pump and is mixed with chicken manure to dilute the chicken manure, and the backflow and cyclic utilization of the biogas slurry are realized; the dependence on a new water source is reduced, and the utilization efficiency of resources is improved.

Description

Technical Field

[0001] This utility model belongs to the field of fermentation equipment technology, and in particular relates to a biogas slurry reflux transmission chicken manure circulating fermentation device. Background Technology

[0002] In the field of livestock and poultry manure treatment, biogas fermentation is a common resource utilization method. Traditional livestock and poultry manure treatment methods typically include multiple stages such as chicken manure collection and storage, anaerobic fermentation, biogas slurry treatment, and resource utilization. In traditional livestock and poultry manure treatment, chicken manure is directly fed into the anaerobic fermentation tank for fermentation without pretreatment, which easily leads to excessively high organic matter concentration in the fermentation broth and secondary pollution. In existing technologies, the biogas slurry recovery efficiency is low. Some devices use simple collection and discharge methods, which cannot achieve biogas slurry recycling. Anaerobic fermentation devices usually lack a systematic recycling device, and biogas slurry cannot be effectively returned to the chicken manure pool for further treatment or mixed with chicken manure, thus limiting the utilization efficiency of biogas resources. To address the above problems, this application provides a biogas slurry return and chicken manure recycling fermentation device. Utility Model Content

[0003] The purpose of this invention is to provide a biogas slurry reflux transmission chicken manure recycling fermentation device, which improves processing efficiency, ensures the quality of fermentation liquid, and reduces the direct discharge of organic matter through mixing, stirring and staged fermentation.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a biogas slurry reflux transmission and chicken manure recycling fermentation device, comprising a chicken manure feed tank, a first anaerobic fermentation tank, a second anaerobic fermentation tank, and a biogas slurry temporary storage tank; the first anaerobic fermentation tank, the second anaerobic fermentation tank, and the biogas slurry temporary storage tank are connected by a three-way pipe; the chicken manure feed tank is connected to the first anaerobic fermentation tank by a first pipe, and a manure pump is installed on the first pipe; the chicken manure feed tank and the biogas slurry temporary storage tank are connected by a biogas slurry reflux pipe, and a sewage pump is installed on the biogas slurry reflux pipe.

[0006] As a preferred embodiment of this utility model, the chicken manure feed tank includes a cylindrical mixing chamber; a chicken manure inlet is provided at the upper end of the mixing chamber; a ring plate is provided on the outer wall of the upper end of the mixing chamber; a stirring motor is installed at the upper end of the mixing chamber; a stirrer placed inside the mixing chamber is installed on the rotating shaft of the stirring motor; a through hole is provided on the upper surface of the mixing chamber to connect with the biogas slurry return pipe; an output pipe is fixedly installed through the outer wall of the lower end of the mixing chamber, and the other end of the output pipe is connected to the input end of the manure pump.

[0007] As a preferred embodiment of this utility model, the agitator includes a shaft connected to the output shaft of the agitator motor, and two rectangular plates are fixed symmetrically on the outer wall of the shaft. The rectangular plates have a row of vertically arranged liquid passage holes. The chicken manure inlet is equipped with a hinged flip door at each location.

[0008] As a preferred embodiment of this utility model, the first anaerobic fermenter includes a first tank body with a stirrer; a first biogas discharge pipe is provided at the upper end of the first tank body; a first biogas residue discharge pipe is provided at the lower end of the first tank body; a first ball valve is installed on the first biogas residue discharge pipe; the connection position of the first pipe to the first tank body is higher than the connection position of the three-way pipe to the first tank body.

[0009] As a preferred embodiment of this utility model, the second anaerobic fermenter includes a second tank body with a stirrer; a second biogas discharge pipe is provided at the upper end of the second tank body; a second biogas residue discharge pipe is provided at the lower end of the second tank body; a second ball valve is installed on the second biogas residue discharge pipe; a biogas slurry discharge pipe is fixedly installed through the second tank body; the biogas slurry discharge pipe is provided with a U-shaped pipe section; the connection position of the biogas slurry discharge pipe to the second tank body is lower than the connection position of the tee pipe to the second tank body.

[0010] As a preferred embodiment of this utility model, a third ball valve is installed on the branch pipe connecting the three-way pipe to the biogas slurry temporary storage tank.

[0011] This utility model has the following beneficial effects:

[0012] This invention adds a biogas slurry storage tank by installing a three-way pipe between the first and second anaerobic fermenters. The biogas slurry fermented in the first anaerobic fermenter is returned to the chicken manure feed tank by a biogas slurry return pipe and a sewage pump to mix with chicken manure and dilute the chicken manure. This realizes the return and recycling of biogas slurry, reduces dependence on new water sources, and improves the efficiency of resource utilization.

[0013] This invention improves processing efficiency, ensures the quality of fermentation liquid, and reduces direct emissions of organic matter through mixing and staged fermentation, thus meeting environmental protection requirements and having high environmental benefits.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0016] Figure 1 This is a schematic diagram of the structure of the biogas slurry reflux transmission chicken manure circulating fermentation device of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of a chicken manure feed pit.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1-Chicken manure feed tank, 2-First anaerobic fermentation tank, 3-Second anaerobic fermentation tank, 4-Biogas slurry temporary storage tank, 5-T-way pipe, 6-First pipe, 7-Manure pump, 8-Biogas slurry return pipe, 9-Sewage pump, 10-Third ball valve, 11-Mixing chamber, 12-Chicken manure inlet, 13-Ring plate, 14-Agitator motor, 15-Agitator, 16-Round hole, 17-Output pipe, 31-Biogas slurry discharge pipe, 311-U-shaped pipe section. Detailed Implementation

[0020] 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 scope of protection of the present utility model. Specific Implementation Example 1:

[0022] Please see Figure 1-2 As shown, this utility model is a biogas slurry reflux and chicken manure recycling fermentation device, including a chicken manure tank 1, a first anaerobic fermentation tank 2, a second anaerobic fermentation tank 3, and a biogas slurry temporary storage tank 4. The first anaerobic fermentation tank 2, the second anaerobic fermentation tank 3, and the biogas slurry temporary storage tank 4 are connected by a three-way pipe 5. The chicken manure tank 1 and the first anaerobic fermentation tank 2 are connected by a first pipe 6, and a manure pump 7 is installed on the first pipe 6. The chicken manure tank 1 and the biogas slurry temporary storage tank 4 are connected by a biogas slurry reflux pipe 8, and a sewage pump 9 is installed on the biogas slurry reflux pipe 8.

[0023] Implementation Process: Chicken Manure Enters the Feed Tank: Chicken manure is fed into the chicken manure feed tank 1, where the agitator 15 in the mixing chamber 11 mixes the chicken manure with the biogas slurry evenly. The Mixture Enters the First Anaerobic Digester 2: The first anaerobic digester 2 performs anaerobic fermentation on the mixture, generating biogas and producing biogas residue. Biogas Residue Discharge: The biogas residue is discharged through the discharge pipe of the first anaerobic digester, and regulated by a ball valve. Biogas Slurry Flow Process in the First Anaerobic Digester 2: The biogas slurry first flows back to the biogas slurry temporary storage tank 4 through the three-way pipe 5, and then enters the second anaerobic digester 3 for further fermentation. Biogas Slurry Discharge from the Second Anaerobic Digester 3: The fermented biogas slurry from the second anaerobic digester 3 is discharged through the biogas slurry discharge pipe 31. Liquid Recirculation: The recirculated biogas slurry is stored in the biogas slurry temporary storage tank 4. When needed, it is pumped back from the biogas slurry return pipe 8 to the chicken manure feed tank 1 by the sewage pump 9 to mix with the chicken manure, diluting the chicken manure and reusing the biogas slurry. Resource recycling: This system enables the return and recycling of biogas slurry, reducing reliance on new water sources and improving resource utilization efficiency. It also reduces direct emissions of organic matter, meeting environmental protection requirements and offering significant environmental benefits. Through mixing and staged fermentation, treatment efficiency is improved, and the quality of the fermentation broth is guaranteed. Overall costs are controlled by reducing the number of equipment and maintenance costs.

[0024] The chicken manure silo 1 includes a cylindrical mixing chamber 11. A chicken manure inlet 12 is located at the top of the mixing chamber 11. A ring plate 13 is installed on the outer wall of the upper part of the mixing chamber 11. A stirring motor 14 is installed at the top of the mixing chamber 11. A stirrer 15, placed inside the mixing chamber 11, is mounted on the shaft of the stirring motor 14. A through hole 16, connecting to the biogas slurry return pipe 8, is located on the upper surface of the mixing chamber 11. An output pipe 17 is fixed through the lower outer wall of the mixing chamber 11, and the other end of the output pipe 17 is connected to the input end of the manure pump 7. The chicken manure silo 1 is installed underground for convenient dumping of chicken manure. The first anaerobic fermentation tank 2, the second anaerobic fermentation tank 3, and the biogas slurry temporary storage tank 4 are installed on the ground, as shown in the installation positions. Figure 1 The arrangement is as shown. During the entire system operation, most of the biogas slurry continuously participates in the mixing of the original chicken manure, diluting the chicken manure to a consistency that is easily decomposed anaerobicly. The diluted chicken manure in the chicken manure feed tank 1 is transported to the first anaerobic fermentation tank 2 through a combination of the manure pump 7 and the first pipeline 6. This process helps to reduce the amount of oxygen entering the first anaerobic fermentation tank 2, ensuring the anaerobic reaction proceeds.

[0025] The agitator 15 includes a shaft connected to the output shaft of the agitator motor 14, with two rectangular plates symmetrically fixed to the outer wall of the shaft. Each rectangular plate has a row of vertically arranged liquid-passing holes. To prevent splashing during chicken manure mixing, a hinged flap door is installed at the chicken manure inlet 12. The row of liquid-passing holes on the rectangular plates of the agitator 15 facilitates effective mixing of the returned biogas slurry with the chicken manure and intercepts longer debris from the chicken manure, preventing excessive debris from entering the first anaerobic fermentation tank 2. It also facilitates the cleaning of debris from the chicken manure.

[0026] The first anaerobic digester 2 includes a first tank body equipped with a stirrer. A first biogas discharge pipe is installed at the upper end of the first tank body. A first biogas residue discharge pipe is installed at the lower end of the first tank body. A first ball valve is installed on the first biogas residue discharge pipe. The connection point of the first pipe 6 to the first tank body is higher than the connection point of the tee pipe 5 to the first tank body. The second anaerobic digester 3 includes a second tank body equipped with a stirrer. A second biogas discharge pipe is installed at the upper end of the second tank body. A second biogas residue discharge pipe is installed at the lower end of the second tank body. A second ball valve is installed on the second biogas residue discharge pipe. A biogas slurry discharge pipe 31 is fixedly installed through the second tank body. The biogas slurry discharge pipe 31 has a U-shaped section 311. The connection point of the biogas slurry discharge pipe 31 to the second tank body is lower than the connection point of the tee pipe 5 to the second tank body. The first and second biogas discharge pipes are connected to existing biogas collection and treatment equipment for processing and utilization. The secondary fermented biogas slurry discharged from the biogas slurry discharge pipe 31 can be collected, diluted, and used as fertilizer.

[0027] A third ball valve 10 is installed on the branch pipe connecting the three-way pipe 5 and the biogas slurry temporary storage tank 4. The third ball valve 10 is closed when the returned biogas slurry is not used as a liquid for diluting chicken manure.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A biogas slurry reflux and chicken manure recycling fermentation device, characterized in that: It includes a chicken manure feed tank (1), a first anaerobic fermentation tank (2), a second anaerobic fermentation tank (3), and a biogas slurry storage tank (4). The first anaerobic fermenter (2) is connected to the second anaerobic fermenter (3) and the biogas slurry temporary storage tank (4) through a three-way pipe (5); The chicken manure trough (1) is connected to the first anaerobic fermentation tank (2) through a first pipe (6), and a manure pump (7) is installed on the first pipe (6). The chicken manure feed tank (1) and the biogas slurry temporary storage tank (4) are connected by a biogas slurry return pipe (8), and a sewage pump (9) is installed on the biogas slurry return pipe (8).

2. The biogas slurry reflux transmission chicken manure circulating fermentation device according to claim 1, characterized in that, The chicken manure feed tank (1) includes a cylindrical mixing chamber (11); a chicken manure inlet (12) is provided at the upper end of the mixing chamber (11); a ring plate (13) is provided on the outer wall of the upper end of the mixing chamber (11); a stirring motor (14) is installed at the upper end of the mixing chamber (11); a stirrer (15) is installed on the shaft of the stirring motor (14) and placed inside the mixing chamber (11); a round through hole (16) is provided on the upper surface of the mixing chamber (11) to connect with the biogas slurry return pipe (8); an output pipe (17) is fixed through the outer wall of the lower end of the mixing chamber (11), and the other end of the output pipe (17) is connected to the input end of the manure pump (7).

3. The biogas slurry reflux transmission chicken manure circulating fermentation device according to claim 2, characterized in that, The agitator (15) includes a shaft connected to the output shaft of the agitator motor (14), and two rectangular plates are fixed symmetrically on the outer wall of the shaft. The rectangular plates have a row of vertically arranged liquid passage holes. A flip door is installed at the chicken manure inlet (12) via a hinge.

4. The biogas slurry reflux transmission chicken manure circulating fermentation device according to claim 1, characterized in that, The first anaerobic fermenter (2) includes a first tank body with a stirrer; a first biogas discharge pipe is provided at the upper end of the first tank body; a first biogas residue discharge pipe is provided at the lower end of the first tank body; a first ball valve is installed on the first biogas residue discharge pipe; the connection position of the first pipe (6) to the first tank body is higher than the connection position of the three-way pipe (5) to the first tank body.

5. The biogas slurry reflux transmission chicken manure circulating fermentation device according to claim 1, characterized in that, The second anaerobic fermentation tank (3) includes a second tank body with a stirrer; a second biogas discharge pipe is provided at the upper end of the second tank body; a second biogas residue discharge pipe is provided at the lower end of the second tank body; a second ball valve is installed on the second biogas residue discharge pipe; a biogas slurry discharge pipe (31) is fixed through the second tank body; the biogas slurry discharge pipe (31) is provided with a U-shaped pipe section (311); the connection position of the biogas slurry discharge pipe (31) to the second tank body is lower than the connection position of the three-way pipe (5) to the second tank body.

6. The biogas slurry reflux transmission chicken manure circulating fermentation device according to claim 1, characterized in that, A third ball valve (10) is installed on the branch pipe connecting the three-way pipe (5) to the biogas slurry temporary storage tank (4).

Images