Harmless treatment apparatus for dairy farm sewage

Abstract

Disclosed is a harmless treatment apparatus for dairy farm sewage, comprising: a fermentation tank, a temperature adjustment mechanism being arranged outside the fermentation tank, a first liquid inlet and a first liquid outlet being formed on the fermentation tank, a first electromagnetic valve being installed on the first liquid inlet, a first valve being installed on the first liquid outlet, and an auxiliary material adding mechanism being arranged on the fermentation tank; and, a stirring assembly, comprising a movable frame. The movable frame is slidably arranged in the fermentation tank. A plurality of electric telescopic rods are fixedly connected to a top end of the fermentation tank. A first stirring mechanism and a second stirring mechanism are rotatably connected to the movable frame. A first rotating shaft is rotatably connected outside the movable frame. The first stirring mechanism and the second stirring mechanism are both in transmission connection with the first rotating shaft. A first motor and a second motor are fixedly connected outside the fermentation tank. A plurality of upper stoppers and a plurality of lower stoppers are fixedly connected inside the fermentation tank. The present invention can perform anaerobic fermentation or aerobic fermentation in the fermentation tank according to requirements without replacing device components, thereby being more convenient to use.

Description

A device for harmless treatment of dairy farm wastewater Technical Field

[0001] This invention relates to the field of fermentation equipment technology, and in particular to a device for the harmless treatment of wastewater from dairy farms. Background Technology

[0002] Wastewater from dairy farms primarily originates from cow urine and wastewater used for flushing barns. In intensive, large-scale dairy farming, the volume of this wastewater is enormous and often cannot be naturally absorbed by the surrounding area. Dairy farm wastewater contains large amounts of organic matter, nitrogen, phosphorus, and other pollutants; if discharged directly without proper treatment, it will cause multiple environmental hazards.

[0003] Wastewater harmless treatment is a complex but crucial process. Anaerobic and aerobic treatment are the core links in the harmless treatment of livestock farm wastewater. Most of the existing fermentation devices can only perform single aerobic or anaerobic fermentation. Different fermentation treatments require different equipment, which is inconvenient in the treatment process.

[0004] Therefore, a harmless treatment device for dairy farm wastewater is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a device for the harmless treatment of dairy farm wastewater, so as to solve the problems existing in the prior art, and to complete anaerobic fermentation and aerobic fermentation in one device.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a device for the harmless treatment of dairy farm wastewater, comprising:

[0007] A fermentation tank is provided with a temperature regulation mechanism on its exterior. The fermentation tank has a first liquid inlet and a first liquid outlet. A first solenoid valve is installed on the first liquid inlet, and a first valve is installed on the first liquid outlet. The fermentation tank is provided with an auxiliary material addition mechanism. Several aeration pipes are laid inside the fermentation tank. Several aeration holes are opened on the aeration pipes. The aeration pipes extend out of the fermentation tank and are connected to an air pump. The fermentation tank has an exhaust hole, and a second solenoid valve is installed on the exhaust hole.

[0008] A stirring assembly includes a movable frame slidably disposed within a fermentation chamber. A plurality of electrically operated telescopic rods are fixedly connected to the top of the fermentation chamber and are drive-connected to the movable frame. A first stirring mechanism and a second stirring mechanism are rotatably connected to the movable frame. A first rotating shaft is rotatably connected to the outside of the movable frame. Both the first and second stirring mechanisms are drive-connected to the first rotating shaft. A first motor and a second motor are fixedly connected to the outside of the fermentation chamber, with the first motor positioned above the second motor. A plurality of upper baffles and a plurality of lower baffles are fixedly connected inside the fermentation chamber. The movable frame is located between the upper and lower baffles. The first rotating shaft is drive-connected to one of the first motor and / or the second motor.

[0009] Preferably, the first stirring mechanism includes a second rotating shaft, which is rotatably connected to the movable frame. A plurality of first blades are fixedly connected to the second rotating shaft, and the second rotating shaft is drivingly connected to the first rotating shaft.

[0010] Preferably, a plurality of first bevel gears are fixedly connected to the first rotating shaft, and a second bevel gear is fixedly connected to the second rotating shaft, wherein the second bevel gear is in a transmission connection with the first bevel gear.

[0011] Preferably, the second stirring mechanism includes several partitions and several third rotating shafts. The third rotating shaft is located between two of the partitions. Several first through holes are opened on the partitions. A wave plate is rotatably connected in the first through holes. The wave plate is elastically disposed on the partition. Several fixed plates are fixedly connected to the third rotating shaft. When the third rotating shaft rotates, the fixed plates contact the wave plate. The third rotating shaft is drively connected to the first rotating shaft.

[0012] Preferably, a plurality of first connecting plates are fixedly connected to the partition plate. The first connecting plates are located on the upper and lower sides of the first through hole. A spring is fixedly connected between the first connecting plates and the undulating plate. The undulating plate is rotatably connected to the first through hole through a connecting shaft.

[0013] Preferably, a third bevel gear is fixedly connected to the third rotating shaft, and a plurality of fourth bevel gears are fixedly connected to the first rotating shaft, wherein the third bevel gear and the fourth bevel gears are connected in a transmission connection.

[0014] Preferably, a first spur gear is fixedly connected to the first motor, a second spur gear is fixedly connected to the second motor, and a third spur gear is fixedly connected to the first rotating shaft. The third spur gear is connected in a transmission manner to one of the first spur gear and / or the second spur gear.

[0015] Preferably, the temperature regulating mechanism includes a housing, which is fixedly connected to the outside of the fermentation tank. The housing has a second liquid inlet and a second liquid outlet. The housing is filled with a heat-conducting medium. The second liquid inlet and the second liquid outlet are connected to a circulation mechanism, which has the function of regulating the temperature of the heat-conducting medium.

[0016] Preferably, the output end of the electric telescopic rod is fixedly connected to a top plate, the top plate has a through hole, a connecting rod is fixedly connected to the movable frame, the connecting rod extends out of the fermentation box, the top plate is fixedly connected to the connecting rod, a guide strip is fixedly connected inside the fermentation box, and an arc plate is fixedly connected to the movable frame, the arc plate being adapted to the guide strip.

[0017] Preferably, the first motor and the second motor are fixedly connected to the fermentation box via a mounting plate, and the output shafts of the first motor and the second motor both extend into the fermentation box. The auxiliary material adding mechanism includes a hopper, and the fermentation box is provided with a feeding port. The feeding port is connected to the hopper via a guide pipe, and a second valve is installed on the guide pipe. Several support legs are fixedly connected to the fermentation box.

[0018] This invention discloses the following technical effects: In this device, the fermentation tank is used to achieve anaerobic and aerobic fermentation. Wastewater is added to the fermentation tank through the first inlet. The added wastewater has undergone solid-liquid separation and does not contain obvious solid impurities. The first solenoid valve is used to control the first inlet, and the first outlet is used to discharge the fermented liquid. The auxiliary material addition mechanism facilitates the addition of auxiliary materials during the fermentation process to ensure the fermentation effect. The aeration pipe is used for aerobic fermentation, and air is introduced into the wastewater during aerobic fermentation. The aeration holes facilitate gas discharge, and the exhaust holes are mainly used to discharge gas from the fermentation tank. Both anaerobic and aerobic fermentation require gas to be discharged from the fermentation tank. The movable frame can be moved upwards and downwards by the drive of the electric telescopic rod. The moving frame moves downwards, between the upper and lower stops, which act as limiters. An electric telescopic rod drives the moving frame upwards. After the moving frame abuts against the upper stop, the first rotating shaft connects to the first motor, which in turn drives the first and second stirring mechanisms to agitate the fermentation liquid. When the electric telescopic rod drives the moving frame downwards, after it abuts against the lower stop, the first rotating shaft connects to the second motor, causing the first and second stirring mechanisms to move as well. The main function of the moving frame at the top and bottom is to agitate the fermentation liquid at different depths, preventing uneven mixing. This invention allows for anaerobic or aerobic fermentation within the fermentation tank as needed, without requiring equipment replacement, making it more convenient to use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is a schematic diagram of the structure of the dairy farm wastewater harmless treatment device of the present invention;

[0021] Figure 2 is a top view of the movable frame of the present invention;

[0022] Figure 3 is an enlarged view of point a in Figure 1;

[0023] The components include: 1. Fermentation tank; 2. First liquid inlet; 3. First liquid outlet; 4. First solenoid valve; 5. Aeration pipe; 6. Moving frame; 7. Electric telescopic rod; 8. First rotating shaft; 9. First motor; 10. Second motor; 11. Upper stop block; 12. Lower stop block; 13. Second rotating shaft; 14. First blade; 15. First bevel gear; 16. Second bevel gear; 17. Partition plate; 18. Third rotating shaft; 19. First through hole; 20. Wave plate. ; 21. Fixing plate; 22. First connecting plate; 23. Spring; 24. Third bevel gear; 25. Fourth bevel gear; 26. First spur gear; 27. Second spur gear; 28. Third spur gear; 29. ​​Housing; 30. Second liquid inlet; 31. Second liquid outlet; 32. Top plate; 33. Connecting rod; 34. Guide bar; 35. Arc plate; 36. Mounting plate; 37. Hopper; 38. Guide pipe; 39. Second valve; 40. Support leg. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Referring to Figures 1-3, the present invention provides a device for the harmless treatment of dairy farm wastewater, comprising:

[0027] Fermentation box 1, with a temperature regulation mechanism installed outside the fermentation box 1, a first liquid inlet 2 and a first liquid outlet 3 opened on the fermentation box 1, a first solenoid valve 4 installed on the first liquid inlet 2, a first valve installed on the first liquid outlet 3, an auxiliary material adding mechanism installed on the fermentation box 1, a number of aeration pipes 5 laid inside the fermentation box 1, a number of aeration holes opened on the aeration pipes 5, the aeration pipes 5 extend out of the fermentation box 1 and are connected to the air pump, and an exhaust hole opened on the fermentation box 1, with a second solenoid valve 41 installed on the exhaust hole;

[0028] The mixing assembly includes a movable frame 6, which is slidably disposed inside the fermentation chamber 1. Several electric telescopic rods 7 are fixedly connected to the top of the fermentation chamber 1 and are drivenly connected to the movable frame 6. A first mixing mechanism and a second mixing mechanism are rotatably connected to the movable frame 6. A first rotating shaft 8 is rotatably connected to the outside of the movable frame 6. Both the first mixing mechanism and the second mixing mechanism are drivenly connected to the first rotating shaft 8. A first motor 9 and a second motor 10 are fixedly connected to the outside of the fermentation chamber 1. The first motor 9 is located above the second motor 10. Several upper baffles 11 and several lower baffles 12 are fixedly connected inside the fermentation chamber 1. The movable frame 6 is located between the upper baffles 11 and the lower baffles 12. The first rotating shaft 8 is drivenly connected to one of the first motor 9 and / or the second motor 10.

[0029] In this device, fermentation tank 1 is used to achieve anaerobic and aerobic fermentation. Wastewater is added to fermentation tank 1 through the first inlet 2. The added wastewater is wastewater that has undergone solid-liquid separation and does not contain obvious solid impurities. The first solenoid valve 4 is used to control the first inlet 2, and the first outlet 3 is used to discharge the fermented liquid. The auxiliary material addition mechanism facilitates the addition of auxiliary materials during fermentation to ensure the fermentation effect. The aeration pipe 5 is used for aerobic fermentation, which vents air to the wastewater during fermentation. The aeration holes facilitate gas discharge, and the exhaust holes are mainly used to discharge gas from fermentation tank 1. Gas discharge from fermentation tank 1 is required in both anaerobic and aerobic fermentation. The moving frame 6 can move up and down under the drive of the electric telescopic rod 7. The moving frame 6 is located at the upper stop 11. The moving frame 6 moves between the upper stop 11 and the lower stop 12, with the upper stop 11 and lower stop 12 acting as limiters. The electric telescopic rod 7 drives the moving frame 6 to move upward. After the moving frame 6 abuts against the upper stop 11, the first rotating shaft 8 is connected to the first motor 9. The first motor 9 drives the first rotating shaft 8 to rotate, which in turn drives the first and second stirring mechanisms to move, thus stirring the fermentation liquid. When the electric telescopic rod 7 drives the moving frame 6 to move downward, after the moving frame 6 abuts against the lower stop 12, the first rotating shaft 8 is connected to the second motor 10, which also causes the first and second stirring mechanisms to move. The main function of the moving frame 6 at the top and bottom is to stir the fermentation liquid at different depths, preventing uneven stirring. Whether it is anaerobic or aerobic fermentation, stirring of the fermentation liquid is necessary. Auxiliary equipment required for the fermentation process, such as temperature sensors and pH sensors, can also be installed as needed.

[0030] In this embodiment, a second connecting plate is fixedly connected to the movable frame 6, and a first rotating shaft 8 is rotatably connected to the second connecting plate.

[0031] In a further optimized design, the first stirring mechanism includes a second rotating shaft 13, which is rotatably connected to the movable frame 6. Several first blades 14 are fixedly connected to the second rotating shaft 13, and the second rotating shaft 13 is drive-connected to the first rotating shaft 8.

[0032] The first rotating shaft 8 drives the second rotating shaft 13 to rotate, and the second rotating shaft 13 drives the first blade 14 to rotate, thus stirring the liquid during fermentation.

[0033] In a further optimized design, several first bevel gears 15 are fixedly connected to the first rotating shaft 8, and a second bevel gear 16 is fixedly connected to the second rotating shaft 13. The second bevel gear 16 is connected to the first bevel gear 15 in a transmission connection.

[0034] The first rotating shaft 8 drives the first bevel gear 15 to rotate, and the first bevel gear 15 drives the second bevel gear 16 to rotate, thereby causing the second rotating shaft 13 to rotate.

[0035] In a further optimized design, the second stirring mechanism includes several partitions 17 and several third rotating shafts 18. The third rotating shafts 18 are located between two partitions 17. Several first through holes 19 are opened on the partitions 17. A undulating plate 20 is rotatably connected in the first through holes 19. The undulating plate 20 is elastically set on the partitions 17. Several fixed plates 21 are fixedly connected to the third rotating shafts 18. When the third rotating shafts 18 rotate, the fixed plates 21 contact the undulating plates 20. The third rotating shafts 18 are drive-connected to the first rotating shafts 8.

[0036] The oscillating plate 20, which is elastically set on the partition 17, can maintain its initial position. The initial position of the oscillating plate 20 is flat. The first rotating shaft 8 drives the third rotating shaft 18 to rotate, and the third rotating shaft 18 drives the fixed plate 21 to rotate. When the fixed plate 21 rotates, it will contact the oscillating plate 20, causing the oscillating plate 20 to shake up and down, thereby forming waves in the fermentation liquid, which can achieve the purpose of thorough stirring.

[0037] In a further optimized design, several first connecting plates 22 are fixedly connected to the partition 17. The first connecting plates 22 are located on the upper and lower sides of the first through hole 19. A spring 23 is fixedly connected between the first connecting plate 22 and the wave plate 20. The wave plate 20 is rotatably connected to the first through hole 19 through a connecting shaft.

[0038] The first connecting plate 22 is used to install the spring 23. There are springs 23 on both the upper and lower sides of the undulating plate 20. The springs 23 can keep the undulating plate 20 in a straight state. After being moved by the undulating plate 20, it can return to its original position, thus facilitating the formation of waves in the fermentation liquid.

[0039] In a further optimized design, a third bevel gear 24 is fixedly connected to the third rotating shaft 18, and several fourth bevel gears 25 are fixedly connected to the first rotating shaft 8. The third bevel gear 24 and the fourth bevel gears 25 are connected in a transmission manner.

[0040] The first rotating shaft 8 drives the fourth bevel gear 25 to rotate, the fourth bevel gear 25 drives the third bevel gear 24 to rotate, and the third bevel gear 24 drives the third rotating shaft 18 to rotate.

[0041] In a further optimized design, a first spur gear 26 is fixedly connected to the first motor 9, a second spur gear 27 is fixedly connected to the second motor 10, and a third spur gear 28 is fixedly connected to the first rotating shaft 8. The third spur gear 28 is connected to one of the first spur gear 26 and / or the second spur gear 27 in a transmission connection.

[0042] The first motor 9 drives the first spur gear 26 to rotate. When the first spur gear 26 meshes with the third spur gear 28, the first spur gear 26 drives the third spur gear 28 to rotate, thereby causing the first rotating shaft 8 to rotate. When the second spur gear 27 meshes with the third spur gear 28, the second motor 10 drives the second spur gear 27 to rotate, and the second spur gear 27 drives the third spur gear 28 to rotate, thereby causing the first rotating shaft 8 to rotate.

[0043] The scheme is further optimized. The temperature regulation mechanism includes an outer shell 29, which is fixedly connected to the outside of the fermentation tank 1. The outer shell 29 has a second liquid inlet 30 and a second liquid outlet 31. The outer shell 29 is filled with a heat-conducting medium. The second liquid inlet 30 and the second liquid outlet 31 are connected to a circulation mechanism, which has the function of regulating the temperature of the heat-conducting medium.

[0044] The circulation mechanism can be a heat pump or other equipment that can regulate the temperature of the heat transfer medium. Its purpose is to achieve temperature regulation of the heat transfer medium. The heat transfer medium enters the outer shell 29 from the second inlet 30 and is discharged from the second outlet 31. This cycle can raise or lower the temperature of the fermentation liquid in the fermentation tank 1.

[0045] The scheme is further optimized. The output end of the electric telescopic rod 7 is fixedly connected to the top plate 32, and the top plate 32 has a through hole. The moving frame 6 is fixedly connected to the connecting rod 33, which extends out of the fermentation box 1. The top plate 32 is fixedly connected to the connecting rod 33. The fermentation box 1 is fixedly connected to the guide strip 34. The moving frame 6 is fixedly connected to the arc plate 35, which is adapted to the guide strip 34.

[0046] The electric telescopic rod 7 drives the top plate 32 to move up and down, the top plate 32 drives the connecting rod 33 to move up and down, the connecting rod 33 drives the moving frame 6 to move up and down, and the cooperation between the arc plate 35 and the guide strip 34 makes the moving frame 6 move up and down more stably. The purpose of the through hole is to facilitate the addition of liquid or auxiliary materials into the fermentation tank 1.

[0047] The scheme is further optimized. The first motor 9 and the second motor 10 are fixedly connected to the fermentation box 1 through the mounting plate 36. The output shafts of the first motor 9 and the second motor 10 both extend into the fermentation box 1. The auxiliary material adding mechanism includes a hopper 37. The fermentation box 1 is provided with a feeding port. The feeding port is connected to the hopper 37 through a guide pipe 38. A second valve 39 is installed on the guide pipe 38. Several support legs 40 are fixedly connected to the fermentation box 1.

[0048] When adding auxiliary materials, add them into hopper 37, and then open the second valve 39 to allow the auxiliary materials to enter fermentation tank 1.

[0049] The device is used as follows: wastewater is added to the fermentation tank 1 through the first inlet 2. When adding auxiliary materials, the auxiliary materials are added to the hopper 37, and then the second valve 39 is opened to allow the auxiliary materials to enter the fermentation tank 1. After adding the materials, the second valve 39 is closed. During the fermentation process, the fermentation liquid needs to be stirred. When stirring the upper layer of fermentation liquid, the electric telescopic rod 7 drives the moving frame 6 to move upward. After the moving frame 6 abuts against the upper stop block 11, the first spur gear 26 and the third spur gear 28 mesh. The first motor 9 drives the first spur gear 26 to rotate, and the first spur gear 26 drives the third spur gear 28 to rotate, thereby causing the first rotating shaft 8 to rotate. The first rotating shaft 8 drives the second rotating shaft 13 and the third rotating shaft 18 to rotate. The second rotating shaft 13 drives the first blade 14 to rotate, stirring the liquid during fermentation. The third rotating shaft 18 drives the fixed plate 21 to rotate. When the fixed plate 21 rotates, it will contact the oscillating plate 20, causing the oscillating plate 20 to shake up and down, thereby forming waves in the fermentation liquid, which can achieve the purpose of thorough stirring. When stirring the lower fermentation liquid, the electric telescopic rod 7 drives the moving frame 6 to move downward. After the moving frame 6 abuts against the lower stop block 12, the second spur gear 27 and the third spur gear 28, and the second motor 10 drive the second spur gear 27 to rotate. The second spur gear 27 drives the third spur gear 28 to rotate, thereby causing the first rotating shaft 8 to rotate. The first rotating shaft 8 will cause the first stirring mechanism and the second stirring mechanism to move.

[0050] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0051] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for harmless treatment of dairy farm wastewater, characterized in that, include: Fermentation box (1), a temperature regulating mechanism is provided outside the fermentation box (1), a first liquid inlet (2) and a first liquid outlet (3) are provided on the fermentation box (1), a first solenoid valve (4) is installed on the first liquid inlet (2), a first valve is installed on the first liquid outlet (3), an auxiliary material adding mechanism is provided on the fermentation box (1), a number of aeration pipes (5) are laid inside the fermentation box (1), a number of aeration holes are provided on the aeration pipes (5), the aeration pipes (5) extend out of the fermentation box (1) and are connected to the air pump, an exhaust hole is provided on the fermentation box (1), and a second solenoid valve (41) is installed on the exhaust hole; The stirring assembly includes a movable frame (6) which is slidably disposed inside the fermentation tank (1). Several electric telescopic rods (7) are fixedly connected to the top of the fermentation tank (1). The electric telescopic rods (7) are drivenly connected to the movable frame (6). A first stirring mechanism and a second stirring mechanism are rotatably connected to the movable frame (6). A first rotating shaft (8) is rotatably connected to the outside of the movable frame (6). The first stirring mechanism and the second stirring mechanism are both drivenly connected to the first rotating shaft (8). A first motor (9) and a second motor (10) are fixedly connected to the outside of the fermentation tank (1). The first motor (9) is located above the second motor (10). Several upper baffles (11) and several lower baffles (12) are fixedly connected inside the fermentation tank (1). The movable frame (6) is located between the upper baffles (11) and the lower baffles (12). The first rotating shaft (8) is drivenly connected to one of the first motor (9) and / or the second motor (10).

2. The dairy farm wastewater harmless treatment device according to claim 1, characterized in that: The first stirring mechanism includes a second rotating shaft (13), which is rotatably connected to the movable frame (6). A plurality of first blades (14) are fixedly connected to the second rotating shaft (13), and the second rotating shaft (13) is drive-connected to the first rotating shaft (8).

3. The dairy farm wastewater harmless treatment device according to claim 2, characterized in that: A plurality of first bevel gears (15) are fixedly connected to the first rotating shaft (8), and a second bevel gear (16) is fixedly connected to the second rotating shaft (13). The second bevel gear (16) is connected to the first bevel gear (15) in a transmission connection.

4. The dairy farm wastewater harmless treatment device according to claim 1, characterized in that: The second stirring mechanism includes several partitions (17) and several third rotating shafts (18). The third rotating shaft (18) is located between two partitions (17). Several first through holes (19) are opened on the partitions (17). A wave plate (20) is rotatably connected in the first through hole (19). The wave plate (20) is elastically disposed on the partition (17). Several fixed plates (21) are fixedly connected to the third rotating shaft (18). When the third rotating shaft (18) rotates, the fixed plates (21) contact the wave plate (20). The third rotating shaft (18) is drively connected to the first rotating shaft (8).

5. The dairy farm wastewater harmless treatment device according to claim 4, characterized in that: A plurality of first connecting plates (22) are fixedly connected to the partition plate (17). The first connecting plates (22) are located on the upper and lower sides of the first through hole (19). A spring (23) is fixedly connected between the first connecting plate (22) and the wave plate (20). The wave plate (20) is rotatably connected to the first through hole (19) through a connecting shaft.

6. The dairy farm wastewater harmless treatment device according to claim 4, characterized in that: A third bevel gear (24) is fixedly connected to the third rotating shaft (18), and a plurality of fourth bevel gears (25) are fixedly connected to the first rotating shaft (8). The third bevel gear (24) and the fourth bevel gears (25) are connected in a transmission manner.

7. The dairy farm wastewater harmless treatment device according to claim 1, characterized in that: A first spur gear (26) is fixedly connected to the first motor (9), a second spur gear (27) is fixedly connected to the second motor (10), and a third spur gear (28) is fixedly connected to the first rotating shaft (8). The third spur gear (28) is connected to one of the first spur gear (26) and / or the second spur gear (27) in a transmission connection.

8. The dairy farm wastewater harmless treatment device according to claim 1, characterized in that: The temperature regulating mechanism includes a housing (29), which is fixedly connected to the outside of the fermentation tank (1). The housing (29) has a second liquid inlet (30) and a second liquid outlet (31). The housing (29) is filled with a heat-conducting medium. The second liquid inlet (30) and the second liquid outlet (31) are connected to a circulation mechanism, which has the function of regulating the temperature of the heat-conducting medium.

9. The dairy farm wastewater harmless treatment device according to claim 1, characterized in that: The output end of the electric telescopic rod (7) is fixedly connected to a top plate (32), and the top plate (32) has a through hole. A connecting rod (33) is fixedly connected to the movable frame (6), and the connecting rod (33) extends out of the fermentation box (1). The top plate (32) is fixedly connected to the connecting rod (33). A guide strip (34) is fixedly connected inside the fermentation box (1). An arc plate (35) is fixedly connected to the movable frame (6), and the arc plate (35) is adapted to the guide strip (34).

10. The dairy farm wastewater harmless treatment device according to claim 1, characterized in that: The first motor (9) and the second motor (10) are fixedly connected to the fermentation box (1) by the mounting plate (36). The output shafts of the first motor (9) and the second motor (10) extend into the fermentation box (1). The auxiliary material adding mechanism includes a hopper (37). The fermentation box (1) is provided with a feeding port. The feeding port is connected to the hopper (37) through a guide pipe (38). A second valve (39) is installed on the guide pipe (38). Several support legs (40) are fixedly connected to the fermentation box (1).

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