Biogas fermentation device for poultry manure treatment

Abstract

The utility model discloses a biogas fermentation device for poultry manure treatment, and belongs to the technical field of poultry farming. The utility model relates to a biogas fermentation device for livestock manure treatment, which comprises a fermentation tank, the hollow shaft is rotationally mounted on the inner bottom surface of the fermentation tank; the heating pipes are mounted on the inner wall of the hollow shaft at equal intervals; wherein a first supporting arm is installed on the hollow shaft in a penetrating mode, material distribution holes are formed in the first supporting arm at equal intervals, a material distribution pipe is installed in the hollow shaft, one end of the material distribution pipe is rotationally connected with the first supporting arm, and the other end of the material distribution pipe is externally connected with a strain storage tank. The temperature in the fermentation tank is rapidly increased to 35-38 DEG C, new materials and strains are continuously supplemented through the material distribution holes, the stability and high efficiency of the fermentation process are maintained, and the starting time of a fermentation system is shortened.

Description

Technical Field

[0001] This utility model relates to the field of handling device technology, and in particular to a biogas fermentation device for poultry manure treatment. Background Technology

[0002] With the rapid development of poultry farming, the treatment of poultry manure has become an important environmental issue. Large amounts of poultry manure not only occupy valuable land resources, but untreated manure also releases harmful gases such as ammonia and methane, polluting the atmosphere. In addition, pathogenic microorganisms in the manure may enter water bodies through surface runoff, leading to water quality deterioration and affecting human health and the ecological environment.

[0003] Currently, the main methods for treating poultry manure include direct composting, land application, composting, and anaerobic digestion. While direct composting and land application are simple and easy to implement, they pose a risk of secondary pollution. Composting can convert manure into organic fertilizer, but the treatment cycle is long and is greatly affected by seasons and climate. In contrast, anaerobic digestion technology, which can convert organic matter into biogas and achieve energy recovery, has higher environmental and economic benefits and is gradually becoming the mainstream treatment method.

[0004] Although anaerobic digestion technology has obvious advantages in treating poultry manure, traditional biogas fermentation devices require a long time to reach a stable gas production state in practical applications, which is especially evident in newly built or restarted fermentation systems. Utility Model Content

[0005] The purpose of this invention is to solve the problem that traditional fermenters in the prior art require a long time to reach a stable gas production state, and to propose a biogas fermentation device for poultry manure treatment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A biogas fermentation device for poultry manure treatment includes a fermentation tank and a hollow shaft rotatably mounted on the bottom surface of the fermentation tank. Heating pipes are equidistantly mounted on the inner wall of the hollow shaft. A first support arm is installed through the hollow shaft, and the first support arm has equidistantly spaced feeding holes. A feeding pipe is installed inside the hollow shaft, one end of which is rotatably connected to the first support arm, and the other end is externally connected to a microbial storage tank.

[0008] To distribute the gas more evenly and improve fermentation efficiency, preferably, an extension shaft is fixedly installed on the hollow shaft, and a motor is fixedly installed on the fermentation tank. The output end of the motor is connected to the extension shaft through a gear set.

[0009] In order to more evenly distribute gas, improve fermentation efficiency, further, the hollow shaft is provided with a second supporting arm, the second supporting arm is provided with a gas distribution hole at equal intervals, the hollow shaft is provided with a gas distribution pipe, one end of the gas distribution pipe is rotatably connected with the second supporting arm, and the other end of the gas distribution pipe is connected with a gas pump.

[0010] In order to more evenly distribute gas, improve fermentation efficiency, further, the gas distribution hole is fixedly connected with the first supporting arm and is provided with a flexible belt, and the flexible belt is provided with an aeration hole at equal intervals.

[0011] In order to reduce heat loss, maintain the temperature stability in the fermentation tank, thereby improving the biogas production and the stability of the fermentation process, preferably, the fermentation tank is provided with a heat preservation layer on the outer wall.

[0012] In order to better control the feeding and discharging of materials, ensure the stability and safety of the fermentation process, preferably, the fermentation tank further comprises a feeding pipe and a discharging pipe fixedly installed on the top, a feeding chamber is installed at the upper end of the feeding pipe, and a water pressure chamber is installed at the upper end of the discharging pipe.

[0013] Compared with the prior art, the biogas fermentation device for poultry manure treatment has the following beneficial effects:

[0014] 1. The biogas fermentation device for poultry manure treatment sends poultry manure into the fermentation tank after pretreatment, uniformly sprays high-activity anaerobic microbial strains into the fermentation tank through the feeding pipe, starts the heating pipe, rapidly increases the temperature in the fermentation tank to 35-38 DEG C, continuously supplements new materials and strains through the feeding hole, maintains the stability and efficiency of the fermentation process, and shortens the starting time of the fermentation system.

[0015] 2. The biogas fermentation device for poultry manure treatment uniformly distributes gas in the fermentation tank through the gas distribution pipe, promotes material mixing and mass transfer, and the gas pump works in an intermittent aeration mode, which changes the traditional understanding that biogas fermentation needs to be carried out under strict anaerobic conditions, compared with the existing stirring mode, the intermittent air stirring can further improve the gas production efficiency, and also has the effect of removing hydrogen sulfide in biogas.

[0016] 3. The biogas fermentation device for poultry manure treatment ensures the temperature stability in the fermentation tank through the design of the heating pipe and the heat preservation layer, and improves the fermentation effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model provides a kind of overall structure schematic view of biogas fermentation device for poultry manure treatment;

[0018] Figure 2 The utility model provides a kind of internal structure schematic view of biogas fermentation device for poultry manure treatment.

[0019] Figure 3 A hollow shaft structure schematic view of a biogas fermentation device for poultry manure treatment is provided in the utility model.

[0020] Figure 4 A hollow shaft cross section structure schematic view of a biogas fermentation device for poultry manure treatment is provided in the utility model.

[0021] In the drawing: 1, fermentation tank; 101, heat preservation layer; 2, feeding pipe; 3, hollow shaft; 301, extension shaft; 4, first supporting arm; 401, distributing hole; 5, distributing pipe; 6, heating pipe; 7, motor; 8, second supporting arm; 801, gas distributing hole; 802, flexible belt; 803, aeration hole; 9, gas distributing pipe; 10, discharging pipe; 11, feeding room; 12, water pressure room. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] Embodiment:

[0025] Reference Figures 1-4 A biogas fermentation device for poultry manure treatment, comprising a fermentation tank 1 for containing poultry manure and fermentation liquid, preferably, the fermentation tank 1 is of a closed structure, and a gas-tight cover is arranged at the top to prevent gas leakage, and further comprising: a hollow shaft 3 rotatably installed on the bottom surface in the fermentation tank 1; a heating pipe 6 installed at equal intervals on the inner wall of the hollow shaft 3, which is an elongated metal pipe, and an electric heating element is installed inside the heating pipe 6, which is used for heating the materials in the fermentation tank 1 to maintain the fermentation temperature at 35-38 DEG C; wherein the first supporting arm 4 is installed through the hollow shaft 3, and the distributing hole 401 is arranged at equal intervals on the first supporting arm 4, which is used for uniformly distributing the bacterial strains, and the distributing pipe 5 is installed in the hollow shaft 3, one end of the distributing pipe 5 is rotatably connected with the first supporting arm 4, and the other end is connected with a bacterial strain storage tank.

[0026] Through the arrangement of the above structure, the poultry manure is sent into the fermentation tank 1 after pretreatment, the high-activity anaerobic microbial strains are uniformly sprayed into the fermentation tank 1 through the distribution pipe 5, the heating pipe 6 is started, the temperature in the fermentation tank 1 is rapidly raised to 35-38 DEG C, the stability and efficiency of the fermentation process are maintained by continuously supplementing new materials and strains through the distribution hole 401, the stability and efficiency of the fermentation process are ensured by automatically adjusting the heating and stirring operation through the PLC controller which monitors the temperature and pH value in real time.

[0027] Referring to Figure 1 and Figure 3 , the hollow shaft 3 is fixedly installed with an extension shaft 301, and the fermentation tank 1 is fixedly installed with a motor 7, and the motor 7 is in transmission connection with the extension shaft 301 through a gear set.

[0028] The motor 7 is started, power is transmitted to the extension shaft 301 through the gear set, and then the hollow shaft 3 is driven to rotate, and the rotating hollow shaft 3 drives the first supporting arm 4 and the distribution pipe 5, so that the materials and strains are uniformly distributed.

[0029] It should be noted that the gear set includes tapered gears installed on the extension shaft 301 and the output end of the motor 7 respectively, and the two tapered gears are in meshing connection, so that power transmission is realized.

[0030] The end of the distribution pipe 5 away from the first supporting arm 4 is penetrated in the extension shaft 301.

[0031] Referring to Figure 2 and Figure 3 , the hollow shaft 3 is penetrated and installed with the second supporting arm 8, the second supporting arm 8 is equidistantly provided with a gas distribution hole 801, and the hollow shaft 3 is installed with a gas distribution pipe 9, one end of the gas distribution pipe 9 is in rotary connection with the second supporting arm 8, and the other end is externally connected with a gas pump.

[0032] The second supporting arm 8 is of a hollow structure and is penetrated and installed on the hollow shaft 3, and the gas distribution hole 801 is equidistantly arranged on the second supporting arm 8 for gas distribution, and the gas is uniformly distributed in the fermentation tank 1 through the gas distribution pipe 9, so as to promote the mixing and mass transfer of the materials.

[0033] It should be noted that the gas pump works in intermittent aeration, which changes the traditional understanding that the biogas fermentation needs to be carried out under strict anaerobic conditions, and compared with the existing stirring mode, the intermittent air stirring can further improve the gas production efficiency, and also has the effect of removing hydrogen sulfide in the biogas.

[0034] Referring to Figure 3 , the flexible belt 802 is fixedly connected between the gas distribution hole 801 and the first supporting arm 4, and the flexible belt 802 is equidistantly provided with an aeration hole 803.

[0035] The flexible belt 802 is fixedly connected between the cloth air hole 801 and the first supporting arm 4, and is made of a material with good flexibility, such as rubber or silica gel. The gas enters the flexible belt 802 through the cloth air hole 801, and is then uniformly distributed into the fermentation tank 1 through the aeration hole 803, thereby further improving the uniformity of gas distribution and mass transfer efficiency. Meanwhile, the flexible belt 802 increases the mixing of the bacteria and the material, thereby further improving the fermentation efficiency.

[0036] Referring to Figure 2 The fermentation tank 1 is additionally provided with a heat preservation layer 101 on the outer wall of the fermentation tank 1. Preferably, the heat preservation layer 101 is additionally provided on the outer wall of the fermentation tank 1, and is made of a high-efficiency heat preservation material, such as polyurethane foam or rock wool, and has a thickness of 50-100 mm, preferably 60 mm.

[0037] Referring to Figure 1 The fermentation tank 1 further comprises a feeding pipe 2 and a discharging pipe 10 fixedly installed on the top. The feeding pipe 2 is used for conveying poultry manure into the fermentation tank 1, and the discharging pipe 10 is used for discharging the fermented biogas residue and biogas slurry. The feeding pipe 2 is provided with a feeding chamber 11 at the upper end, which is provided with a valve and a control system to control the feeding process, thereby ensuring that the poultry manure is uniformly fed into the fermentation tank 1 and avoiding excessive feeding to cause excessive pressure in the fermentation tank 1. The discharging pipe 10 is provided with a water pressure chamber 12 at the upper end, which is provided with a valve and a control system to control the discharging process, thereby maintaining the water pressure balance in the fermentation tank 1, preventing gas leakage and pressure fluctuation.

[0038] Working principle: After being pretreated, the poultry manure is sent into the fermentation tank 1 through the feeding pipe 2, and the high-activity anaerobic microbial bacteria are uniformly sprayed into the fermentation tank 1 through the distributing pipe 5. The heating pipe 6 is started to rapidly increase the temperature in the fermentation tank 1 to 35-38℃. The motor 7 is started to transmit power to the extension shaft 301 through the gear set, thereby driving the hollow shaft 3 to rotate, driving the first supporting arm 4 and the second supporting arm 8 to rotate, and ensuring the uniform distribution of the material and the gas. New material and bacteria are continuously supplemented through the distributing hole 401 to maintain the stability and efficiency of the fermentation process. The air pump is started to intermittently uniformly distribute the gas into the fermentation tank 1 through the air distribution pipe 9 to promote the mixing and mass transfer of the material. The gas enters the flexible belt 802 through the cloth air hole 801, and is then uniformly distributed into the fermentation tank 1 through the aeration hole 803, thereby further improving the uniformity of gas distribution and mass transfer efficiency. The heat preservation layer 101 reduces heat loss, maintains the temperature stability in the fermentation tank 1, and improves the fermentation efficiency and energy utilization efficiency. The feeding chamber 11 controls the feeding process to ensure that the poultry manure is uniformly fed into the fermentation tank 1. The water pressure chamber 12 controls the discharging process to maintain the water pressure balance in the fermentation tank 1, prevent gas leakage, and prevent pressure fluctuation.

[0039] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A biogas fermentation device for poultry manure treatment, comprising a fermentation tank (1), characterized in that, Also include: Hollow shaft (3), rotatingly installed on the bottom surface of the fermentation tank (1); Heating pipe (6), equidistantly installed on the inner wall of the hollow shaft (3); Wherein, the first support arm (4) is installed on the hollow shaft (3), the cloth hole (401) is equidistantly opened on the first support arm (4), the cloth pipe (5) is installed in the hollow shaft (3), one end of the cloth pipe (5) is rotatably connected with the first support arm (4), and the other end is connected with the strain storage tank.

2. The biogas fermentation device for poultry manure treatment according to claim 1, characterized in that, The extension shaft (301) is fixedly installed on the hollow shaft (3), the motor (7) is fixedly installed on the fermentation tank (1), and the gear set is transmission connected between the output end of the motor (7) and the extension shaft (301).

3. The biogas fermentation device for poultry manure treatment according to claim 1 or 2, characterized in that, The second support arm (8) is installed on the hollow shaft (3), the cloth hole (801) is equidistantly opened on the second support arm (8), the cloth pipe (9) is installed in the hollow shaft (3), one end of the cloth pipe (9) is rotatably connected with the second support arm (8), and the other end is connected with the air pump.

4. The biogas fermentation device for poultry manure treatment according to claim 3, characterized by The flexible belt (802) is fixedly connected between the cloth hole (801) and the first support arm (4), and the aeration hole (803) is equidistantly opened on the flexible belt (802).

5. The biogas fermentation device for poultry manure treatment according to claim 1, characterized in that, The fermentation tank (1) is provided with a heat preservation layer (101) on the outer wall.

6. The biogas fermentation device for poultry manure treatment according to claim 1, characterized in that, The fermentation tank (1) further comprises a feed pipe (2) and a discharge pipe (10) fixedly installed on the top, a feed chamber (11) is installed at the upper end of the feed pipe (2), and a water pressure chamber (12) is installed at the upper end of the discharge pipe (10).

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