Chicken farm chicken manure fermentation device

Abstract

This utility model discloses a chicken manure fermentation device for chicken farms, relating to the field of chicken manure fermentation. It includes a fermentation tank with a stirring mechanism inside. The stirring mechanism includes a stirring shaft, cutting blades, and stirring blades. The stirring shaft is rotatably connected to the fermentation tank, and several stirring blades are installed on the stirring shaft. The stirring blades are inclined, with their lower ends connected to the stirring shaft. The cross-sectional shape of the stirring blades is elliptical. A cutting blade is positioned between two adjacent stirring blades, and the cutting blade is fixedly connected to the stirring shaft. The stirring blades adopt an inclined elliptical cross-section design, and their inclination angle and elliptical contour can simultaneously generate axial pushing force and radial shear force during rotation, causing the bottom layer of chicken manure to turn upwards and the upper layer of material to sink downwards. This breaks the limitations of traditional flat blade "planar stirring," achieving full-layer mixing of materials in the fermentation tank and resulting in better fermentation effects.

Description

Technical Field

[0001] This utility model relates to the field of chicken manure fermentation, specifically a chicken manure fermentation device for chicken farms. Background Technology

[0002] In large-scale chicken farming, the treatment and resource utilization of chicken manure is a crucial aspect of environmental protection and sustainable development. Currently, one common method for treating chicken manure is to convert it into organic fertilizer or energy (such as biogas) through fermentation. Traditional fermentation tanks often use simple flat-plate mixing blades, which have a uniform shape and lack targeted design. On the one hand, the flat blades primarily tumble the chicken manure radially during rotation, resulting in weak axial mixing and easy stratification of the material. The bottom layer of chicken manure struggles to fully contact the fermentation liquid and oxygen, slowing down the fermentation process. On the other hand, chicken manure is sticky and easily forms lumps or clumps. Existing mixing mechanisms lack specialized crushing components, preventing the effective dispersion of clumps and leading to uneven fermentation, which negatively impacts product quality. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a chicken manure fermentation device for chicken farms to solve the shortcomings of the existing technology.

[0004] The purpose of this utility model is achieved through the following technical solution: a chicken manure fermentation device for chicken farms, including a fermentation tank, a stirring mechanism is provided in the fermentation tank, the stirring mechanism includes a stirring shaft, a cutting blade and stirring blades, the stirring shaft is rotatably connected to the fermentation tank, a plurality of stirring blades are installed on the stirring shaft, the stirring blades are inclined, the lower end of the stirring blades is connected to the stirring shaft, the cross-sectional shape of the stirring blades is elliptical, a cutting blade is provided between two adjacent stirring blades, and the cutting blade is fixedly connected to the stirring shaft.

[0005] Furthermore, a motor is installed on the top of the fermentation tank, and the output shaft of the motor is connected to the stirring shaft.

[0006] Furthermore, a gas exhaust pipe is connected to the top of the fermentation tank, and a pressure control mechanism is installed on the gas exhaust pipe to maintain the fermentation pressure inside the fermentation tank.

[0007] Furthermore, the pressure control mechanism includes a valve ball, a push tube, and a spring. The gas discharge pipe has a first hole, a second hole, and a third hole sequentially opened along its own axial direction. The diameter of the third hole is smaller than the diameter of the first hole. The valve ball and the spring are both disposed in the second hole. The valve ball blocks the first hole. The end of the valve ball away from the first hole is connected to the spring. The end of the spring away from the valve ball is connected to the push tube. The connection position of the push tube is adjustable along the axial direction of the gas discharge pipe.

[0008] Furthermore, the push tube is provided with an external thread, the third hole is provided with an internal thread, and the push tube thread is adapted to the third hole.

[0009] Furthermore, the push tube is hollow, and a through hole is provided on the side wall of the push tube, the through hole connecting the second hole and the inner cavity of the push tube.

[0010] Furthermore, the gas discharge pipe is flanged at the end furthest from the fermentation tank and connected to a discharge pipe.

[0011] Furthermore, the top of the fermentation tank is connected to a fermentation liquid inlet pipe.

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

[0013] 1. The stirring blade adopts an inclined elliptical cross section design. Its inclination angle and elliptical contour can generate axial pushing force and radial shear force simultaneously when rotating, causing the bottom chicken manure to turn upward and the upper material to sink downward. This breaks the limitation of the traditional flat blade's "planar stirring" and realizes full-layer mixing of materials in the fermentation tank, resulting in a better fermentation effect.

[0014] 2. The cutting blades set between adjacent mixing blades rotate synchronously with the mixing shaft. Their sharp edges can mechanically cut the sticky chicken manure, avoiding the problem of insufficient local fermentation caused by material clumping.

[0015] 3. The pressure control mechanism changes the spring compression by adjusting the threaded adjustable push tube, thereby dynamically adjusting the sealing force of the valve ball on the first hole to adapt to the gas production requirements of different fermentation stages. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of a chicken manure fermentation device for a chicken farm according to the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the gas emission pipe in a chicken manure fermentation device for a chicken farm according to this utility model;

[0018] Figure 3 This is a cross-sectional view of the stirring blade in a chicken manure fermentation device for a chicken farm according to the present invention;

[0019] In the diagram, 1-fermentation tank, 2-stirring shaft, 3-cutting blade, 4-stirring blade, 5-motor, 6-gas exhaust pipe, 7-valve ball, 8-push pipe, 9-first hole, 10-second hole, 11-third hole, 12-spring, 13-through hole, 14-exhaust pipe, 15-fermentation liquid inlet pipe. Detailed Implementation

[0020] Example 1

[0021] like Figures 1 to 3 As shown, a chicken manure fermentation device for a chicken farm includes a fermentation tank 1. A fermentation liquid inlet pipe 15 is connected to the top of the fermentation tank 1. A stirring mechanism is installed inside the fermentation tank 1, comprising a stirring shaft 2, cutting blades 3, and stirring blades 4. The stirring shaft 2 is rotatably connected to the fermentation tank 1. Several stirring blades 4 are installed on the stirring shaft 2, and the stirring blades 4 are inclined. The lower end of each stirring blade 4 is connected to the stirring shaft 2. The cross-sectional shape of each stirring blade 4 is elliptical. A cutting blade 3 is positioned between adjacent stirring blades 4 and is fixedly connected to the stirring shaft 2. A motor 5 is installed at the top of the fermentation tank 1, and the output shaft of the motor 5 is connected to the stirring shaft 2. Chicken manure from the chicken farm is discharged into the fermentation tank 1 through a sewage pipe. Fermentation liquid is added to the fermentation tank 1 through the fermentation liquid inlet pipe 15. Then, the motor 5 is started, driving the stirring shaft. 2. The stirring shaft 2 rotates, simultaneously driving the cutting blade 3 and the stirring blade 4 to rotate. The stirring blade 4 adopts an inclined elliptical cross-section design. Its inclination angle and elliptical contour can generate axial pushing force and radial shearing force simultaneously when rotating. The axial pushing force causes the bottom chicken manure to turn upward and the upper material to sink downward, breaking the limitation of the traditional flat blade "planar stirring". This achieves full-layer mixing of materials in the fermentation tank and has a better fermentation effect. The streamlined structure of the elliptical cross-section can reduce stirring resistance and at the same time generate uniform shearing of the material, avoiding material accumulation caused by vortex on the back of the blade and improving the mixing uniformity. The cutting blade 3 set between adjacent stirring blades 4 rotates synchronously with the stirring shaft 2. Its sharp edge can form a mechanical cutting effect on sticky chicken manure, avoiding the problem of insufficient local fermentation caused by material clumping.

[0022] Example 2

[0023] Based on Example 1, such as Figure 1 and Figure 2As shown, a gas discharge pipe 6 is connected to the top of the fermentation tank 1. A pressure control mechanism is installed on the gas discharge pipe 6 to maintain the fermentation pressure in the fermentation tank 1. The pressure control mechanism includes a valve ball 7, a push tube 8, and a spring 12. The gas discharge pipe 6 has a first hole 9, a second hole 10, and a third hole 11 sequentially opened along its own axial direction. The diameter of the third hole 11 is smaller than the diameter of the first hole 9 than the diameter of the second hole 10. The valve ball 7 and the spring 12 are both installed in the second hole 10. The valve ball 7 blocks the first hole 9. The end of the valve ball 7 away from the first hole 9 is connected to the spring 12. The end of the spring 12 away from the valve ball 7 is connected to the push tube 8. The connection position of the push tube 8 is adjustable along the axial direction of the gas discharge pipe 6. The end of the gas discharge pipe 6 away from the fermentation tank 1 is flanged and connected to the discharge pipe 14. During fermentation, biogas (mainly composed of methane, carbon dioxide, and other gases) is continuously produced. If the pressure inside the tank is too high, it may cause safety hazards, while if the pressure is too low, it will affect the stability of the fermentation environment. Therefore, a pressure control mechanism is set up to maintain the fermentation pressure inside the fermentation tank 1. The spring 12 is in a compressed state. Through the reaction force of the spring 12, the valve ball 7 is pressed against the first hole 9, blocking the first hole 9 and preventing the gas inside the fermentation tank 1 from escaping. When the gas pressure inside the fermentation tank 1 reaches the emission threshold, the gas pressure is greater than the reaction force of the spring 12, causing the valve ball 7 to separate from the first hole 9, opening the first hole 9 to the second hole 10, allowing the gas to be discharged smoothly through the emission pipe 14 into the designated location. When the gas pressure inside the fermentation tank 1 is less than the reaction force of the spring 12, the valve ball 7, under the action of the spring 12, re-blocks the first hole 9, thereby maintaining the fermentation pressure inside the fermentation tank 1.

[0024] Example 3

[0025] Based on Example 2, such as Figure 1 and Figure 2 As shown, the push tube 8 has an external thread, and the third hole 11 has an internal thread. The thread of the push tube 8 is adapted to the third hole 11. The push tube 8 is hollow, and a through hole 13 is opened on the side wall of the push tube 8. The through hole 13 connects the second hole 10 and the inner cavity of the push tube 8. Rotating the push tube 8 adjusts the compression degree of the spring 12, thereby adjusting the sealing force of the valve ball 7 on the first hole 9. The fermentation pressure can be adjusted according to the specific fermentation environment and the fermentation state. Specifically, when the gas production rate is high in the early stage of fermentation, the push tube 8 can be loosened to reduce the pressure of the spring 12, reduce the gas emission threshold, and prevent the pressure in the tank from exceeding the safety limit. When the gas production rate decreases in the middle and late stages of fermentation, the push tube 8 can be tightened to increase the pressure of the spring 12, maintain a slightly positive pressure environment in the tank, and optimize the metabolic activity of microorganisms. The pressure can be steplessly adjusted within the range of 0.5-15 kPa to adapt to the gas production needs of different fermentation stages.

Claims

1. A chicken manure fermentation device for a chicken farm, comprising a fermentation tank (1), characterized in that, The fermentation tank (1) is equipped with a stirring mechanism, which includes a stirring shaft (2), a cutting blade (3) and a stirring blade (4). The stirring shaft (2) is rotatably connected to the fermentation tank (1). Several stirring blades (4) are installed on the stirring shaft (2). The stirring blades (4) are inclined. The lower end of the stirring blades (4) is connected to the stirring shaft (2). The cross-sectional shape of the stirring blades (4) is elliptical. A cutting blade (3) is provided between two adjacent stirring blades (4). The cutting blade (3) is fixedly connected to the stirring shaft (2).

2. The chicken manure fermentation device for chicken farms according to claim 1, characterized in that, A motor (5) is installed on the top of the fermentation tank (1), and the output shaft of the motor (5) is connected to the stirring shaft (2).

3. The chicken manure fermentation device for chicken farms according to claim 1, characterized in that, The top of the fermentation tank (1) is connected to a gas discharge pipe (6), and a pressure control mechanism is provided on the gas discharge pipe (6) to maintain the fermentation pressure in the fermentation tank (1).

4. The chicken manure fermentation device for chicken farms according to claim 3, characterized in that, The pressure control mechanism includes a valve ball (7), a push tube (8), and a spring (12). The gas discharge pipe (6) has a first hole (9), a second hole (10), and a third hole (11) sequentially opened along its own axial direction. The diameter of the third hole (11) and the diameter of the first hole (9) are both smaller than the diameter of the second hole (10). The valve ball (7) and the spring (12) are both set inside the second hole (10). The valve ball (7) blocks the first hole (9). The end of the valve ball (7) away from the first hole (9) is connected to the spring (12). The end of the spring (12) away from the valve ball (7) is connected to the push tube (8). The connection position of the push tube (8) is adjustable along the axial direction of the gas discharge pipe (6).

5. The chicken manure fermentation device for chicken farms according to claim 4, characterized in that, The push tube (8) is provided with an external thread, and the third hole (11) is provided with an internal thread. The thread of the push tube (8) is adapted to the third hole (11).

6. The chicken manure fermentation device for a chicken farm according to claim 5, characterized in that, The push tube (8) is hollow, and a through hole (13) is provided on the side wall of the push tube (8). The through hole (13) connects the second hole (10) with the inner cavity of the push tube (8).

7. The chicken manure fermentation device for chicken farms according to claim 4, characterized in that, The gas discharge pipe (6) is connected to a discharge pipe (14) by a flange at the end furthest from the fermentation tank (1).

8. The chicken manure fermentation device for chicken farms according to claim 1, characterized in that, The top of the fermentation tank (1) is connected to a fermentation liquid inlet pipe (15).

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