Microbial fermentation and stirring device

Abstract

The utility model relates to the technical field of fermentation devices, in particular to a microbial fermentation and stirring device which comprises a fermentation tank, a stirring structure and a cleaning structure, the fermentation tank is provided with a feed port and a discharge port, the stirring structure comprises a first driving shaft, a stirring rod and a second driving shaft, and the first driving shaft is rotatably arranged in the fermentation tank around a rotating axis X; the stirring rod is positioned in the fermentation tank and is rotationally connected with the first driving shaft through a pin shaft of which the axis is vertical to the rotating axis X; one end of the second driving shaft is fixed with the fermentation tank, and the other end of the second driving shaft is in transmission connection with the pin shaft through a bevel gear group. By arranging the stirring structure, when microbial strains and raw materials in the fermentation tank are stirred and mixed, the stirring rod in the stirring structure can continuously change the angle between the stirring rod and the first driving shaft in the process of rotating around the rotating shaft X, and compared with a traditional stirring structure which rotates at a fixed angle, the stirring structure has the advantages that the stirring speed is greatly improved; the purpose of more sufficient stirring and mixing can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fermentation devices, in particular to a microbial fermentation and stirring device. Background Art

[0002] The microbial fermentation device is a professional equipment for producing microbial agents. In the existing microbial fermentation device, a stirring structure is generally provided in the fermentation container to improve the mixing degree of the microorganisms and the nutrient solution in the fermentation container, thereby improving the efficiency of the microbial fermentation. However, the stirring structure in the existing microbial fermentation device mainly rotates at a fixed angle, and its stirring range is small, resulting in low efficiency of microbial fermentation. Moreover, the feed port and the discharge port of the fermentation container are generally set relatively small, and the interior is not convenient to clean. Based on the above problems, the utility model provides a more efficient microbial fermentation and stirring device. Utility Model Content

[0003] The purpose of the utility model is to provide a microbial fermentation and stirring device to solve the problems raised in the above background technology.

[0004] The utility model is realized by the following technical solutions:

[0005] A microbial fermentation and stirring device comprises a fermentation tank, a stirring structure and a cleaning structure, wherein the fermentation tank has a feed port and a discharge port, the stirring structure comprises a first drive shaft, a stirring rod and a second drive shaft, the first drive shaft being rotatably arranged in the fermentation tank around a rotation axis X; the stirring rod is located in the fermentation tank and is rotationally connected to the first drive shaft through a pin shaft whose axis is perpendicular to the rotation axis X; one end of the second drive shaft is fixed to the fermentation tank, and the other end of the second drive shaft is transmission-connected to the pin shaft through a bevel gear set; the cleaning structure comprises a cleaning rod and a hollow rubber ring, the cleaning rod is fixedly connected to the first drive shaft; the rubber ring is fixedly arranged on the cleaning rod and can fit with the inner wall of the fermentation tank in an inflated state, one end of the rubber ring is closed, and the other end is connected to an air supply device, and the air supply device is configured to inflate the rubber ring when the first drive shaft rotates.

[0006] Optionally, the position where the stirring rod is rotatably connected to the first driving shaft is located in the middle of the fermentation tank, and the stirring rod is arranged parallel to the direction of the rotation axis X.

[0007] Optionally, the end of the first driving shaft has a connecting bin, and the stirring rod is rotatably connected to the outer periphery of the connecting bin via the pin shaft.

[0008] Optionally, the bevel gear set includes a first bevel gear fixed on the second drive shaft and a second bevel gear fixed on the pin shaft, and the first bevel gear and the second bevel gear are meshed with each other.

[0009] Optionally, the air supply device includes a cylinder body, a piston, a return spring and a locking structure, the cylinder body having a first end and a second end arranged along a first direction perpendicular to the rotation axis X, the first end of the cylinder body is fixedly connected to the first drive shaft, and the second end of the cylinder body is connected to the rubber ring; the piston is slidably arranged in the cylinder body along a first direction; the return spring is arranged in the cylinder body and can provide the piston with a rebound force pointing from the second end of the cylinder body to the first end of the cylinder body; the locking structure can selectively lock the piston to the first end of the cylinder body to allow or limit the piston to slide relative to the cylinder body along the first direction.

[0010] Optionally, the piston includes a lead block and a rubber outer layer sleeved on the outside of the lead block.

[0011] Optionally, a threaded rod is fixedly provided at the first end of the cylinder body, and a connecting hole for the threaded rod to pass through is provided on the first driving shaft, and the threaded rod is threadedly connected with a nut after passing through the connecting hole.

[0012] Compared with the prior art, the utility model provides a microbial fermentation and stirring device, which has the following beneficial effects:

[0013] The utility model provides a stirring structure and a cleaning structure. When the microbial strains and raw materials in the fermentation tank are stirred and mixed, the stirring rod in the stirring structure will continuously change the angle between it and the first driving shaft during the process of rotating around the rotation axis X. Compared with the traditional stirring structure that rotates at a fixed angle, it can achieve the purpose of stirring and mixing more fully. In addition, after the fermentation is completed, the cleaning structure can be used to conveniently clean the inside of the fermentation tank to prepare for the next fermentation of microbial inoculants;

[0014] The air supply device of the utility model comprises a cylinder body, a piston, a return spring and a locking structure. When the raw materials in the fermentation tank are stirred, the position of the piston can be locked by the locking structure, so that the rubber ring is in an uninflated state and does not fit with the inner wall of the fermentation tank, thereby reducing the friction resistance of the stirring structure during the rotation process; and when the fermentation tank needs to be cleaned, the locking structure on the piston is released, and the piston presses the air in the cylinder body into the rubber tube under the action of centrifugal force, so that the rubber tube is inflated and expanded, and the expanded rubber tube fits with the inner wall of the fermentation tank and rotates with the cleaning rod to realize the cleaning of the inner wall of the fermentation tank;

[0015] The piston of the utility model comprises a lead block and a rubber outer layer. Since the magnitude of the centrifugal force is related to the weight of the piston, the built-in lead block can ensure that the piston has a larger weight, and the external rubber outer layer can ensure the sealing between the piston and the inner wall of the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0019] Figure 4 For the utility model Figure 2 Schematic diagram of the enlarged structure at B.

[0020] In the figure: 1. fermentation tank; 2. feed inlet; 3. discharge outlet; 4. valve; 5. first drive shaft; 6. stirring rod; 7. second drive shaft; 8. pin shaft; 9. connecting bin; 10. coupling; 11. motor; 12. mounting bracket; 13. sealed bearing; 14. first bevel gear; 15. second bevel gear; 16. cleaning rod; 17. rubber ring; 18. cylinder body; 19. piston; 190. lead block; 191. rubber outer layer; 20. reset spring; 21. positioning screw; 22. threaded rod; 23. nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: See Figures 1 to 4According to an embodiment of the utility model, a microbial fermentation and stirring device is provided, including a fermentation tank 1, a stirring structure and a cleaning structure. Of course, it also includes necessary oxygen supply system and temperature control system, etc. The oxygen supply system provides sufficient oxygen for aerobic microorganisms in the fermentation tank 1, and the temperature control system is used to maintain the required temperature during the fermentation process. The oxygen supply system and the temperature control system can adopt existing technologies, which will not be repeated here. The fermentation tank 1 has a feed port 2 and a discharge port 3, the feed port 2 is arranged at the top of the fermentation tank 1, and the discharge port 3 is arranged at the bottom of the fermentation tank 1, and valves 4 are installed at the feed port 2 and the discharge port 3. The stirring structure includes a first driving shaft 5, a stirring rod 6 and a second driving shaft 7. The first driving shaft 5 is rotatably arranged in the fermentation tank 1 around the rotation axis X; the stirring rod 6 is located in the fermentation tank 1 and is rotatably connected to the first driving shaft 5 through a pin shaft 8 whose axis is perpendicular to the rotation axis X. Specifically, the left end of the first driving shaft 5 has a connecting bin 9, and a plurality of stirring rods 6 are rotatably connected to the outer periphery of the connecting bin 9 through the pin shaft 8. The right end of the first driving shaft 5 extends out of the fermentation tank 1 and is coaxially fixed to the output end of a motor 11 through a coupling 10. The housing of the motor 11 is fixed to the outside of the fermentation tank 1 through a mounting bracket 12. The first driving shaft 5 and the fermentation tank 1 are connected through The sealed bearing 13 is rotatably connected; one end of the second drive shaft 7 is fixed to the inner wall of the fermentation tank 1, and the other end of the second drive shaft 7 is connected to the pin shaft 8 through a bevel gear set. In order to achieve stable transmission, the bevel gear set specifically includes a first bevel gear 14 fixed on the second drive shaft 7 and a second bevel gear 15 fixed on the pin shaft 8, and the first bevel gear 14 and the second bevel gear 15 are meshed with each other; the cleaning structure includes a cleaning rod 16 and a hollow rubber ring 17, the cleaning rod 16 is arc-shaped, one end of the cleaning rod 16 is fixedly connected to the first drive shaft 5, and the other end of the cleaning rod 16 is rotatably connected to the second drive shaft 7; that is, the second drive shaft 7 provides an installation basis for the fixed installation of the first bevel gear 14 on the inner wall of the fermentation tank 1, and also serves as a connection basis for the rotatable connection of the cleaning rod 16, providing support for the stable rotation of the cleaning rod 16. The rubber ring 17 is fixed on the cleaning rod 16 and can fit against the inner wall of the fermentation tank 1 when inflated. One end of the rubber ring 17 is closed and the other end is connected to the air supply device, which is configured to inflate the rubber ring 17 when the first drive shaft 5 rotates.

[0023] Using the microbial fermentation and stirring device of the above structure, microbial strains and some necessary raw materials are added into the stirring tank through the feed port 2. The necessary raw materials may include carbon sources, nitrogen sources, inorganic salts and growth factors, etc. These components together provide the microorganisms with the nutrients necessary for growth and reproduction.

[0024] During the fermentation of the microbial inoculant, the stirring structure can be used to stir and mix the microbial strains and raw materials in the fermentation tank 1 to improve the fermentation efficiency. In specific operation, the first drive shaft 5 is rotated, and the rotation of the first drive shaft 5 can not only drive the stirring rod 6 to rotate around the rotation axis X, but also drive the stirring rod 6 to make a circular motion around the pin 8 under the drive of the bevel gear set. Therefore, the stirring rod 6 will continuously change the angle between it and the first drive shaft 5 during the process of rotating around the rotation axis X. Compared with the traditional stirring structure that rotates at a fixed angle, it can achieve the purpose of stirring and mixing more fully.

[0025] After the fermentation is completed, after the material in the fermentation tank 1 is discharged through the discharge port 3, the cleaning structure can be used to effectively clean the inside of the fermentation tank 1 to prepare for the next fermentation of the microbial agent. In the specific operation, the valve 4 of the discharge port 3 is closed, and the cleaning agent is injected into the fermentation tank 1. Then, air is injected into the rubber ring 17 through the air supply device to make the rubber ring 17 expand and stick to the inner wall of the fermentation tank 1, and the first drive shaft 5 is rotated again. During the rotation process, the rubber ring 17 can scrape off the raw materials adhering to the inner wall of the fermentation tank 1, which plays a good cleaning role, thereby preparing for the next fermentation of the microbial agent. It can be understood that during the fermentation of the microbial agent, the rubber ring 17 is in an uninflated state. At this time, the rubber ring 17 does not contact the inner wall of the fermentation tank 1, so that not only can more sufficient stirring be achieved through the rotating cleaning rod 16, but also the friction resistance of the stirring structure during the rotation process can be reduced.

[0026] In order to further improve the uniformity of stirring and mixing, the fermentation tank 1 in this embodiment adopts a hollow spherical structure.

[0027] In order to increase the stirring range and improve the stirring effect as much as possible, in this exemplary embodiment, the position where the stirring rod 6 is rotatably connected to the first driving shaft 5 is located in the middle of the fermentation tank 1, and the stirring rod 6 is arranged parallel to the direction of the rotation axis X.

[0028] In order to achieve the purpose of inflating the rubber ring 17 when the first drive shaft 5 rotates, in this exemplary embodiment, the air supply device includes a cylinder 18, a piston 19, a return spring 20 and a locking structure. The cylinder 18 has a first end and a second end arranged along a first direction perpendicular to the rotation axis X. The first end of the cylinder 18 is fixedly connected to the first drive shaft 5, and the second end of the cylinder 18 is connected to the rubber ring 17; the piston 19 is slidably arranged in the cylinder 18 along the first direction; the return spring 20 is arranged in the cylinder 18 and can provide the piston 19 with a rebound force pointing from the second end of the cylinder 18 to the first end of the cylinder 18; the locking structure can selectively lock the piston 19 to the first end of the cylinder 18 to allow or limit the piston 19 to slide relative to the cylinder 18 along the first direction. In this example, the locking structure is a positioning screw 21, which is threadedly connected to the side wall of the cylinder 18. By tightening or loosening the positioning screw 21, the piston 19 can be locked to the first end of the cylinder 18 or the piston 19 can be released from the first end of the cylinder 18. With such arrangement, when the stirring structure is used to stir the raw materials in the microbial fermentation tank 1, the piston 19 can be locked at the first end of the cylinder body 18 by the locking structure, so that the rubber ring 17 is in an uninflated state and does not fit against the inner wall of the fermentation tank 1, thereby reducing the friction resistance encountered by the stirring structure during rotation; when the cleaning structure is needed to clean the inner wall of the fermentation tank 1, the locking structure is released from the locking of the piston 19, so that the piston 19 is subjected to the centrifugal force when the first drive shaft 5 rotates, and moves from the first end of the cylinder body 18 toward the second end and remains at the second end of the cylinder body 18, thereby pressing the air in the cylinder body 18 into the rubber tube, causing the rubber tube to be inflated and expanded, and the expanded rubber tube fits against the inner wall of the fermentation tank 1 and rotates with the cleaning rod 16, thereby achieving the cleaning of the inner wall of the fermentation tank 1.

[0029] In this exemplary embodiment, the piston 19 includes a lead block 190 and a rubber outer layer 191 sleeved on the outside of the lead block 190. Since the magnitude of the centrifugal force is related to the weight of the piston 19, the built-in lead block 190 can ensure that the piston 19 has a larger weight, and the external rubber outer layer 191 can ensure the sealing between the piston 19 and the inner wall of the cylinder body 18.

[0030] In order to realize the detachable fixed connection between the cylinder body 18 and the first drive shaft 5, it is convenient to assemble the cylinder body 18 and the first drive shaft 5 and replace the cylinder body 18 later. In this exemplary embodiment, a threaded rod 22 is fixedly provided at the first end of the cylinder body 18, and a connecting hole for the threaded rod 22 to pass through is provided on the first drive shaft 5. The threaded rod 22 passes through the connecting hole and is threadedly connected with the nut 23.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microbial fermentation and stirring device, comprising a fermentation tank (1), a stirring structure and a cleaning structure, wherein the fermentation tank (1) has a feed inlet (2) and a discharge outlet (3), and is characterized in that: The stirring structure comprises: A first driving shaft (5) is rotatably disposed about a rotation axis X in the fermentation tank (1); A stirring rod (6) is located in the fermentation tank (1) and is rotatably connected to the first driving shaft (5) via a pin shaft (8) whose axis is perpendicular to the rotation axis X; and a second drive shaft (7), one end of which is fixed to the fermentation tank (1), and the other end of which is transmission-connected to the pin shaft (8) via a bevel gear set; The cleaning structure comprises: A cleaning rod (16) fixedly connected to the first drive shaft (5); and a hollow rubber ring (17) which is fixed on the cleaning rod (16) and can fit against the inner wall of the fermentation tank (1) in an inflated state; one end of the rubber ring (17) is closed and the other end is connected to an air supply device, wherein the air supply device is configured to inflate the rubber ring (17) when the first drive shaft (5) rotates.

2. The microbial fermentation and stirring device according to claim 1, characterized in that: The position where the stirring rod (6) is rotatably connected to the first drive shaft (5) is located in the middle of the fermentation tank (1), and the stirring rod (6) is arranged parallel to the direction of the rotation axis X.

3. The microbial fermentation and stirring device according to claim 2, characterized in that: The end of the first drive shaft (5) has a connecting chamber (9), and the stirring rod (6) is rotatably connected to the outer periphery of the connecting chamber (9) via the pin shaft (8).

4. The microbial fermentation and stirring device according to claim 3, characterized in that: The bevel gear set comprises a first bevel gear (14) fixed on the second drive shaft (7) and a second bevel gear (15) fixed on the pin shaft (8), the first bevel gear (14) and the second bevel gear (15) being meshed with each other.

5. The microbial fermentation and stirring device according to any one of claims 1 to 4, characterized in that: The gas supply device comprises: a cylinder body (18) having a first end and a second end arranged along a first direction perpendicular to the rotation axis X, the first end of the cylinder body (18) being fixedly connected to the first drive shaft (5), and the second end of the cylinder body (18) being connected to the rubber ring (17); A piston (19) is slidably disposed in the cylinder (18) along a first direction; a return spring (20), disposed in the cylinder (18) and capable of providing the piston (19) with a rebound force directed from the second end of the cylinder (18) to the first end of the cylinder (18); and a locking structure, which can selectively lock the piston (19) to the first end of the cylinder (18) to allow or limit the piston (19) to slide relative to the cylinder (18) along a first direction.

6. The microbial fermentation and stirring device according to claim 5, characterized in that: The piston (19) comprises a lead block (190) and a rubber outer layer (191) sleeved on the outside of the lead block (190).

7. The microbial fermentation and stirring device according to claim 5, characterized in that: A threaded rod (22) is fixedly provided at the first end of the cylinder body (18), and a connecting hole for the threaded rod (22) to pass through is provided on the first drive shaft (5), and the threaded rod (22) is threadedly connected to a nut (23) after passing through the connecting hole.

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