Stirring device and anaerobic fermentation tank

Abstract

According to the stirring device, a main shaft, a plurality of stirring stems, a plurality of main blades and a plurality of side blades are arranged, the stirring stems are fixed to the main shaft and arranged in the axial direction of the main shaft in a staggered mode, in the rotating process of the main shaft, the stirring stems can be driven to rotate synchronously, and under the stirring action of the stirring stems, the main blades can rotate synchronously. The main blades are respectively fixed at the end parts of the stirring stems, the main blades are also driven to rotate in the stirring process of the stirring stems, the materials at the bottom of the tank are taken up under the disturbance of the main blades, and the side blades are respectively fixed at the side parts of the stirring stems at intervals and are obliquely arranged relative to the stirring stems; the side blades can effectively push materials to advance, the materials are prevented from rotating in situ, effective disturbance of the high-solid-content materials is achieved under the mutual cooperation of the stirring stems, the main blades and the side blades, and therefore the uniformity of the materials is guaranteed, and the fermentation quality of the anaerobic fermentation tank is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a stirring device and an anaerobic fermentation tank. Background Art

[0002] Anaerobic fermentation tanks provide excellent conditions for the growth and reproduction of microorganisms. In anaerobic fermentation tanks, these organisms perform their catalytic or metabolic functions and produce reactants and metabolites that are difficult to obtain through conventional chemical reactions.

[0003] For example, the patent document with the announcement number CN207749124U discloses an anaerobic fermentation tank, which is composed of a tank body, a stirring motor, a stirring shaft, and stirring blades. During the growth of microorganisms, the stirring motor drives the stirring shaft to rotate, so that the stirring blades stir the material.

[0004] Since the solid content of dry anaerobic materials is generally greater than 20%, due to its high solid content, it often presents a non-flowing state. The stirring shaft disturbance effect of the existing anaerobic fermentation tank is poor, resulting in uneven material mixing. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies and propose a stirring device and an anaerobic fermentation tank to solve the technical problem in the prior art that the stirring shaft of the anaerobic fermentation tank has poor disturbance effect and is difficult to stir the material evenly.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a stirring device, comprising:

[0008] spindle;

[0009] A plurality of stirring stems, each of which is fixed to the main shaft and staggered along the axial direction of the main shaft;

[0010] A plurality of main blades are respectively fixed to the ends of the stirring stems and are used to stir the material at the side wall of the anaerobic tank; and

[0011] A plurality of side blades are fixed at intervals on the sides of the stirring stems and are arranged obliquely relative to the stirring stems.

[0012] In some embodiments, the stirring stem includes two oppositely disposed stirring frames, which are fixed to the main shaft and extend in a radial direction of the main shaft.

[0013] In some embodiments, reinforcing ribs are provided between the stirring frame and the main shaft, and the reinforcing ribs are arranged at intervals along the circumference of the stirring frame.

[0014] In some embodiments, the main blades are respectively fixed to one end of the two stirring frames away from the main shaft, and the side blades are respectively arranged on the opposite side of each stirring frame.

[0015] In some embodiments, the stirring stem further includes a connecting frame, and both ends of the connecting frame are respectively fixed to the two stirring frames.

[0016] In some embodiments, the stirring stem further includes a plurality of connecting ribs, each of the connecting ribs is cross-arranged, and both ends of the connecting ribs are respectively fixed to the two stirring frames.

[0017] In some embodiments, receiving grooves are provided on both sides of the main leaf, and the receiving grooves are used to receive materials.

[0018] In some embodiments, a fastening plate is provided on a side of the main shaft opposite to the stirring frame, and the stirring frame is fixed to the fastening plate by a locking bolt.

[0019] In some embodiments, the side lobes are inclined at an angle of 20°-30° relative to the main axis.

[0020] In a second aspect, the utility model further provides an anaerobic fermentation tank, comprising the stirring device.

[0021] Compared with the prior art, the stirring device provided by the utility model is provided with a main shaft, a plurality of stirring stems, a plurality of main blades and a plurality of side blades. The stirring stems are fixed to the main shaft and staggered along the axial direction of the main shaft. During the rotation of the main shaft, the stirring stems can be driven to rotate synchronously. Under the stirring action of the stirring stems, the high-solid material begins to be disturbed and the material is mixed. The main blades are respectively fixed to the ends of the stirring stems. During the stirring process of the stirring stems, the main blades are also driven to rotate. Under the disturbance of the main blades, the material at the bottom of the tank is lifted up, thereby preventing the material from settling to the bottom of the tank. The side blades are respectively fixed at intervals on the sides of the stirring stems and are inclined relative to the stirring stems. The side blades can effectively push the material forward and avoid the material from spinning in place. With the mutual cooperation of the stirring stems, the high-solid material is effectively disturbed, so that the material is pushed forward in an orderly manner, thereby ensuring the uniformity of the material and improving the fermentation quality of the anaerobic fermentation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a stirring device provided in an embodiment of the present utility model.

[0023] Reference numerals in the figures:

[0024] 10-spindle 11-fastening plate 20-stirring stem

[0025] 21 - stirring frame 22 - connecting frame 23 - connecting rib

[0026] 30 - main leaf 31 - receiving groove 40 - side leaf

[0027] 211—Strengthening ribs. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] In order to solve the technical problem in the prior art that the stirring shaft of the anaerobic fermentation tank has poor disturbance effect and is difficult to stir the materials evenly, the stirring device of the embodiment of the utility model realizes uniform stirring of the materials through the cooperation of various stirring parts.

[0030] It should be noted that the stirring device described in the present invention is used for but not limited to anaerobic fermentation tanks, etc. For the convenience of explanation, in the present invention, only the stirring device applied to anaerobic fermentation tanks is used as an example for explanation. The principle of applying the stirring device to other types of equipment is essentially the same as that applied to anaerobic fermentation tanks, and will not be described in detail here.

[0031] The stirring device provided in the embodiment of the present invention is as follows Figure 1 As shown, it includes a main shaft 10, a plurality of stirring stems 20, a plurality of main blades 30 and a plurality of side blades 40. Each stirring stem 20 is fixed to the main shaft 10 and is staggered along the axial direction of the main shaft 10; each main blade 30 is fixed to the end of each stirring stem 20 for stirring the material at the side wall of the anaerobic tank; each side blade 40 is fixed to the side of each stirring stem 20 at intervals and is tilted relative to each stirring stem 20.

[0032] Specifically, the stirring device is provided with a main shaft 10, a plurality of stirring stems 20, a plurality of main blades 30 and a plurality of side blades 40. Each stirring stem 20 is fixed to the main shaft 10 and staggered along the axial direction of the main shaft 10. During the rotation of the main shaft 10, the stirring stems 20 can be driven to rotate synchronously. Under the stirring action of the stirring stems 20, the high-solid material begins to be disturbed and the material is mixed. Each main blade 30 is respectively fixed to the end of each stirring stem 20. During the stirring process of the stirring stems 20, the main blades 30 are also driven. The main blade 30 rotates dynamically, and the material at the bottom of the tank is brought up under the disturbance of the main blade 30, thereby preventing the material from settling to the bottom of the tank. The side blades 40 are fixed at intervals on the sides of each stirring stem 20 and are inclined relative to each stirring stem 20. The side blades 40 can effectively push the material forward and prevent the material from spinning in place. With the mutual cooperation of the stirring stem 20, the main blade 30 and the side blades 40, effective disturbance of high-solid-content material is achieved, so that the material is pushed forward in an orderly manner, thereby ensuring the uniformity of the material and improving the fermentation quality of the anaerobic fermentation tank.

[0033] In this embodiment, the main shaft 10 is made of high-strength steel no less than Q355.

[0034] In this embodiment, the main shaft 10 is rotatably connected to the anaerobic fermentation tank, and the rotation of the main shaft 10 is mainly controlled by an explosion-proof motor.

[0035] It can be understood that the stirring stem 20 can be a frame or stem-leaf structure that can stir the material as the main shaft 10 rotates. The number and size of the stirring stem 20 can be set according to the size of the fermentation tank.

[0036] In one embodiment, the stirring stem 20 includes two oppositely disposed stirring frames 21, which are fixed to the main shaft 10 and extend in the radial direction of the main shaft 10. Specifically, when the main shaft 10 rotates, the stirring frames 21 are driven to rotate synchronously, thereby stirring the materials evenly.

[0037] In this embodiment, the stirring frame 21 is a rod structure.

[0038] In one embodiment, reinforcing ribs 211 are provided between the stirring frame 21 and the main shaft 10, and the reinforcing ribs 211 are arranged at intervals along the circumference of the stirring frame 21. Specifically, by providing the reinforcing ribs 211 between the stirring frame 21 and the main shaft 10, the connection between the stirring frame 21 and the main shaft 10 can be effectively strengthened, thereby preventing deformation of the main shaft 10 and the stirring frame 21.

[0039] In one embodiment, a fastening plate 11 is provided on the side of the main shaft 10 facing away from the stirring frame 21, and the stirring frame 21 is fixed to the fastening plate 11 by a locking bolt. Specifically, the locking bolt, by connecting the fastening plate 11 and the stirring frame 21, can clamp the main shaft 10, thereby securing the stirring frame 21. While securing the stirring frame 21, it can also facilitate the removal of the stirring frame 21, thereby facilitating the maintenance and cleaning of the stirring frame 21.

[0040] In one embodiment, the stirring stem 20 further includes a connecting frame 22, the two ends of which are respectively fixed to the two stirring frames 21. Specifically, the connecting frame 22 can strengthen the connection between the stirring frames 21 to prevent the stirring frames 21 from deforming. At the same time, the connecting frame 22 can also synchronously stir the material with the rotation of the stirring frames 21 to improve the uniformity of the material.

[0041] In one embodiment, the stirring stem 20 further includes a plurality of connecting ribs 23, each of which is cross-arranged, and the ends of the connecting ribs 23 are respectively fixed to the two stirring frames 21. Specifically, the connecting ribs 23 can further strengthen the connection between the stirring frames 21 and prevent the stirring frames 21 from deforming.

[0042] In this embodiment, the reinforcement ribs are made of φ20 round steel.

[0043] In one embodiment, the main blades 30 are respectively fixed to the ends of the two stirring frames 21 away from the main shaft 10. Specifically, by being fixed to the stirring frames 21, the main blades 30 can strengthen the connection between the stirring frames 21 and at the same time, stir the material at the side wall of the anaerobic fermentation tank to prevent the material from sinking to the bottom.

[0044] In this embodiment, the distance between the end of the main blade 30 and the bottom of the anaerobic tank is only 150 mm. Under the disturbance of the main blade 30, the material at the bottom of the tank is lifted up, which effectively solves the problem of the material stratified and settling to the bottom of the tank.

[0045] In one embodiment, receiving grooves 31 are provided on both sides of the main blade 30 to receive material. Specifically, during the rotation of the main blade 30, material at the sidewall of the fermenter enters the receiving grooves 31. The material entering the receiving grooves 31 is then carried from the area near the sidewall of the fermenter to the inside of the fermenter as the main blade 30 rotates, effectively preventing the material from sinking to the bottom and achieving uniform mixing of the material.

[0046] In one embodiment, the side blades 40 are respectively disposed on opposite sides of the stirring frame 21. Specifically, by disposing the side blades 40 on opposite sides of the stirring frame 21, the spacing between the side blades 40 in each row can be kept as consistent as possible, so that the materials in each fermentation tank can be uniformly stirred.

[0047] In one embodiment, the side blades 40 are inclined at an angle of 20°-30° relative to the main shaft 10. Specifically, the side blades 40 at this angle can effectively push the material forward and prevent the material from spinning in place.

[0048] In one embodiment, the main blade 30 is parallel to the main axis 10, the side blade 40 is at an angle of 25 degrees to the main axis 10, the installation interval of the side blade 40 is 200mm~300mm, the length of the side blade 40 is 300mm~400mm, the thickness of the side blade 40 is 10mm~15mm, and the surface of the side blade 40 is sprayed with a wear-resistant coating.

[0049] The embodiment of the present invention also provides an anaerobic fermentation tank, which includes the stirring device. Specifically, the anaerobic fermentation tank is provided with the stirring shaft. When the fermentation work of the anaerobic fermentation tank is carried out, the motor drives the main shaft 10 to rotate. During the rotation of the main shaft 10, the stirring frame 21 of the stirring stem 20 can be driven to rotate synchronously. Under the stirring action of the stirring frame 21, the high-solid material begins to be disturbed and the material is mixed. Each main leaf 30 is fixed to the end of each stirring stem 20. During the stirring process of the stirring stem 20, the main leaf 30 brings up the material at the bottom of the tank to prevent the material from settling to the bottom of the tank. The side leaf 40 pushes the material forward to prevent the material from spinning in place. Under the mutual cooperation of the stirring stem 20, the main leaf 30 and the side leaf 40, the effective disturbance of the high-solid material is achieved, so that the material is pushed forward in an orderly manner, and the fermentation quality of the anaerobic fermentation tank is improved.

[0050] In this embodiment, the anaerobic fermentation tank is further provided with a driving device, which adopts an explosion-proof motor. The explosion-proof motor is connected to the main shaft 10 through a reducer. The explosion-proof grade of the explosion-proof motor is not less than ExdⅡBT4.

[0051] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A stirring device, characterized in that: include: spindle; A plurality of stirring stems, each of which is fixed to the main shaft and staggered along the axial direction of the main shaft; A plurality of main blades are respectively fixed to the ends of the stirring stems and are used to stir the material at the side wall of the anaerobic tank; and A plurality of side blades are fixed at intervals on the sides of the stirring stems and are arranged obliquely relative to the stirring stems.

2. The stirring device according to claim 1, characterized in that The stirring stem includes two stirring frames arranged opposite to each other, and the two stirring frames are fixed to the main shaft and extend in the radial direction of the main shaft.

3. The stirring device according to claim 2, characterized in that Reinforcement ribs are provided between the stirring frame and the main shaft, and the reinforcement ribs are arranged at intervals along the circumference of the stirring frame.

4. The stirring device according to claim 2, characterized in that The main leaves are respectively fixed to one end of the two stirring frames away from the main shaft, and the side leaves are respectively arranged on the opposite side of the stirring frames.

5. The stirring device according to claim 2, characterized in that The stirring stem further comprises a connecting frame, and two ends of the connecting frame are respectively fixed to the two stirring frames.

6. The stirring device according to claim 2, characterized in that The stirring stem further comprises a plurality of connecting ribs, each of the connecting ribs being cross-arranged, and both ends of the connecting ribs being respectively fixed to the two stirring frames.

7. The stirring device according to claim 2, characterized in that A fastening plate is provided on a side of the main shaft opposite to the stirring frame, and the stirring frame is fixed to the fastening plate by a locking bolt.

8. The stirring device according to any one of claims 1 to 7, characterized in that: Both sides of the main leaf are provided with receiving grooves, and the receiving grooves are used to receive materials.

9. The stirring device according to any one of claims 1 to 7, characterized in that: The side leaves are inclined at an angle of 20°-30° relative to the main axis.

10. An anaerobic fermentation tank, characterized in that: The stirring device comprises the stirring device according to any one of claims 1 to 9.

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