Air distribution device

Abstract

The utility model belongs to the technical field of fermentation tank equipment, and particularly relates to an air distribution device which comprises a fermentation tank, an annular hollow pipe is fixedly arranged at the bottom of the circumferential surface of the outer wall of the fermentation tank, and the air outlet end of an air pump is in through connection with the annular hollow pipe through an air outlet pipe. A plurality of groups of hollow pipes are fixedly arranged at the bottom of the circumferential surface of the inner wall of the fermentation tank in an annular array manner, a spring is fixedly arranged at the center of the bottom end in the cylinder, a locking ball is fixedly arranged at the top end of the spring, and a plurality of groups of through holes are formed in the bottom end of the cylinder in an annular array manner; an air pressure detector is fixedly arranged at the end, close to the center of the fermentation tank, of the interior of each hollow pipe, a controller is fixedly arranged on one side of the top end of the fermentation tank, through cooperation of the structures, when the air pressure in all the hollow pipes is consistent, air is sprayed out from the through holes in a unified mode, the air is more evenly distributed in the fermentation tank, and the fermentation efficiency is improved. Full contact between microorganisms and oxygen is guaranteed, so that the fermentation effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fermentation tank equipment, in particular to an air distribution device. Background Art

[0002] Fermentation tanks, as industrial devices used for microbial fermentation, are mainly used in bioengineering, chemical industry, environmental protection, etc. The main function of the fermentation tank is to provide a suitable environment for the growth of microorganisms or cells. It is equipped with cooling and heating devices to adjust the temperature of the fermentation liquid to meet the growth needs of different microorganisms. In addition, the air distribution device is also an important component, which is used to supply sufficient oxygen to the fermentation liquid to meet the breathing needs of microorganisms.

[0003] The existing fermentation tank air distribution device is mainly composed of the following parts: air compressor, air filter, air distributor and pipeline, etc. Its working principle is as follows: first, the air compressor generates compressed air, and then the air passes through the air filter to remove dust, particles and other impurities, ensuring that the air entering the fermentation tank is clean and pollution-free. The air passes through the air distributor and pipeline system and is distributed into the fermentation tank to promote the growth of microorganisms and the fermentation process.

[0004] At present, the air distribution device of the fermentation tank in the prior art has the following disadvantages: the air is unevenly distributed in the fermentation tank, the holes of the air distribution pipeline are located at different positions, the air pressure at different positions is different, and the holes of the air distribution pipeline farther from the air compressor have the phenomenon of no air coming out, resulting in most of the air flowing out through the holes closer to the air compressor, resulting in insufficient mixing between the gas and the fermentation liquid, affecting the sufficient contact between the microorganisms and oxygen, thereby affecting the fermentation effect; therefore, an air distribution device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the shortcomings of the existing air distribution device of the fermentation tank, an air distribution device is proposed to solve the problem that the air is unevenly distributed in the fermentation tank, the holes of the air distribution pipeline are located at different positions, the air pressure at different positions is different, and the holes of the air distribution pipeline farther from the air compressor have the phenomenon of no air coming out, resulting in most of the air flowing out through the holes closer to the air compressor, resulting in insufficient mixing between the gas and the fermentation liquid, affecting the sufficient contact between the microorganisms and oxygen, thereby affecting the fermentation effect.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an air distribution device described in the utility model comprises a fermentation tank, a plurality of supporting legs are fixedly arranged at the bottom end of the fermentation tank, a feeding pipe is fixedly and penetrated at one side of the top end of the fermentation tank, a discharge pipe is fixedly and penetrated at one side of the bottom end of the fermentation tank, an annular hollow pipe is fixedly arranged at the bottom of the circumferential surface of the outer wall of the fermentation tank, an air pump is arranged at one side of the fermentation tank, the air outlet end of the air pump is connected with the annular hollow pipe through the air outlet pipe, an air filter box is arranged at one side of the air pump, the air intake end of the air pump is connected with the air filter box through the air pipe, and an air intake pipe is fixedly and penetrated at one side of the air filter box;

[0007] An array of hollow tubes are fixedly arranged in an annular array at the bottom of the inner wall circumference of the fermenter at a horizontal position with the annular hollow tube, an array of cylinders are fixedly arranged in an array at the bottom of the circumference of the hollow tube and are penetrated by the cylinder, the top of the cylinder is open and connected with the hollow tube, a spring is fixedly arranged at the center of the inner bottom end of the cylinder, a locking ball is fixedly arranged at the top of the spring, a sealing ring is fixedly arranged at the top of the inner wall circumference of the cylinder at a position directly above the locking ball, the top of the locking ball abuts against the bottom of the sealing ring, an array of through holes are opened at the bottom end of the cylinder in an annular array, and the hollow tube An air pressure detector is fixedly provided at one end of the interior near the center of the fermentation tank, a controller is fixedly provided on one side of the top of the fermentation tank, an input end of the controller is electrically connected to an output end of the air pressure detector through a wire, an output end of the controller is electrically connected to a power supply end of the air pump through a wire, and through the cooperation of the annular hollow tube, the hollow tube, the spring, the lock ball, the sealing ring, the air pressure detector and the controller, when the air pressure in all the hollow tubes is consistent, the air is uniformly ejected from the through hole, so that the air is more evenly distributed in the fermentation tank, ensuring sufficient contact between the microorganisms and oxygen, thereby improving the fermentation effect.

[0008] Preferably, a driving motor is fixedly provided at the top center of the fermentation tank via a fixing frame, a rotating rod is fixedly provided at the bottom output end of the driving motor via a coupling, the rotating rod rotates through a bearing and penetrates into the interior of the fermentation tank, an array of fixed disks are fixedly provided in a circular array on the circumferential surface below the middle of the rotating rod, an array of stirring paddles are fixedly provided in a circular array on the circumferential surface of the fixed disk, and the air and the fermentation liquid are stirred to allow them to fully react through the cooperation of the driving motor, the rotating rod and the stirring paddle.

[0009] Preferably, an array of mounting rods are fixedly arranged in a circular array on the circumferential surface of the upper middle portion of the rotating rod, and an array of needle rods are fixedly arranged in an array at the bottom end of the mounting rods, and bubbles generated during the stirring and fermentation process are eliminated through the cooperation between the mounting rods and the needle rods.

[0010] Preferably, a hollow ring is fixedly arranged on the inner circumferential surface of the fermenter, the interior of the hollow ring is filled with heat transfer oil, an array of heating rods is fixedly arranged in an annular array between the inner top and bottom of the hollow ring, a spiral cooling pipe is fixedly arranged in a spiral shape on the outer circumferential surface of the fermenter, a liquid inlet is fixedly and penetrated on one side of the top head of the spiral cooling pipe, a liquid outlet is fixedly and penetrated on one side of the bottom end of the spiral cooling pipe, a water pump is arranged on one side of the bottom end of the fermenter, the water outlet position of the water pump is connected to the liquid inlet through a liquid infusion pipe, a water tank is arranged on one side of the water pump, the water suction port position of the water pump is connected to the water tank through a water suction pipe, one end of the liquid outlet is connected to the water tank through a liquid outlet pipe, an array of refrigeration pipes is fixedly arranged on the inner bottom end of the water tank, the refrigeration pipe and the power supply end of the heating rod are electrically connected to the output end of the controller through a wire, and the temperature in the fermenter is adjusted according to the fermentation needs through the cooperation of the heating rod, the spiral cooling pipe, the refrigeration pipe and the controller.

[0011] Preferably, a temperature sensor is fixedly provided at the center of the inner bottom end of the fermentation tank, and the output end of the temperature sensor is electrically connected to the input end of the controller through a wire. Through the cooperation of the temperature sensor and the controller, the temperature inside the fermentation tank is monitored in real time.

[0012] Preferably, an observation window is fixedly provided on one side of the top of the fermentation tank, through which the fermentation conditions inside the fermentation tank and the working conditions of the equipment can be observed.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides an air distribution device. In order to make the air evenly distributed in the fermentation tank and make the microorganisms fully contact with oxygen, thereby improving the fermentation effect, the staff operates the controller to start the air pump, the external air first enters the trachea through the filtration of the air filter box, then enters the annular hollow tube through the outlet pipe, and then the gas enters the array hollow tube. The air pressure detectors arranged in different hollow tubes detect the air pressure in the corresponding hollow tubes and send the air pressure data to the controller. The data processing end of the controller processes the air pressure data. The controller first controls the air pump to work at low power, or stops the air pump to make the gas gradually fill all the hollow tubes. When the air pressure inside all the hollow tubes is consistent, the controller controls the air pump to work at high power, so that the gas in all the hollow tubes squeezes the array lock balls at the same time, moves the lock balls downward, and the spring is compressed at the same time. The gas is discharged into the fermentation liquid in the fermentation tank through the through hole at the bottom, and the bottom of all the cylinders are simultaneously exhausted, so as to ensure that the air is more evenly distributed in the fermentation tank, so that the microorganisms are fully contacted with oxygen, thereby improving the fermentation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is the first stereogram of the whole;

[0017] Figure 2 It is the second stereogram of the whole;

[0018] Figure 3 is a cross-sectional view of a fermentation tank;

[0019] Figure 4 yes Figure 3 A magnified view of the structure at center A;

[0020] Legend:

[0021] 1. Fermentation tank; 2. Support legs; 3. Feeding pipe; 4. Discharge pipe; 5. Annular hollow pipe; 6. Air pump; 7. Exhaust pipe; 8. Air filter box; 9. Air pipe; 10. Intake pipe; 11. Hollow pipe; 12. Cylinder; 13. Spring; 14. Lock ball; 15. Sealing ring; 16. Through hole; 17. Air pressure detector; 18. Controller; 19. Drive motor; 20. Rotating rod; 21. Fixed plate; 22. Stirring paddle; 23. Mounting rod; 24. Needle rod; 25. Hollow ring; 26. Heating rod; 27. Spiral cooling pipe; 28. Liquid inlet; 29. ​​Liquid outlet; 30. Water pump; 31. Infusion tube; 32. Water tank; 33. Suction pipe; 34. Liquid outlet; 35. Refrigeration pipe; 36. Temperature sensor; 37. Observation window. DETAILED DESCRIPTION

[0022] 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 of 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.

[0023] Specific examples are given below.

[0024] See also Figure 1-Figure 4, an air distribution device described in the utility model comprises a fermentation tank 1, a plurality of supporting legs 2 are fixedly provided at the bottom end of the fermentation tank 1, a feeding pipe 3 is fixedly provided and penetrated at one side of the top end of the fermentation tank 1, a discharge pipe 4 is fixedly provided and penetrated at one side of the bottom end of the fermentation tank 1, an annular hollow pipe 5 is fixedly provided at the bottom of the circumferential surface of the outer wall of the fermentation tank 1, an air pump 6 is provided at one side of the fermentation tank 1, an air outlet end of the air pump 6 is connected with the annular hollow pipe 5 through an air outlet pipe 7, an air filter box 8 is provided at one side of the air pump 6, an air inlet end of the air pump 6 is connected with the air filter box 8 through an air pipe 9, and an air inlet pipe 10 is fixedly provided and penetrated at one side of the air filter box 8;

[0025] An array of hollow tubes 11 are fixedly arranged in an annular array at the bottom of the inner wall circumference of the fermenter 1 and at a horizontal position of the annular hollow tube 5. An array of cylinders 12 are fixedly arranged in an array at the bottom of the circumference of the hollow tube 11 and are penetrated. The top of the cylinder 12 is open and connected to the hollow tube 11. A spring 13 is fixedly arranged at the center of the inner bottom end of the cylinder 12. A locking ball 14 is fixedly arranged at the top of the spring 13. A sealing ring 15 is fixedly arranged at the top of the inner wall circumference of the cylinder 12, which is located directly above the locking ball 14. The top of the locking ball 14 presses against the sealing ring 15. 5, the bottom end of the cylinder 12 is provided with a plurality of through holes 16 in a circular array, an air pressure detector 17 is fixedly provided at one end of the hollow tube 11 near the center of the fermentation tank 1, a controller 18 is fixedly provided at one side of the top of the fermentation tank 1, the input end of the controller 18 is electrically connected to the output end of the air pressure detector 17 through a wire, the output end of the controller 18 is electrically connected to the power supply end of the air pump 6 through a wire, an observation window 37 is fixedly provided at one side of the top of the fermentation tank 1, and during operation, in order to make the air evenly distributed in the fermentation tank 1, so that the microorganisms and oxygen In order to fully contact the air, the fermentation effect is improved. First, the staff adds the fermentation liquid into the fermentation tank 1 through the feeding pipe 3, and then the staff operates the controller 18 to start the air pump 6. The external air first enters the air pipe 9 through the filtration of the air filter box 8, and then enters the annular hollow pipe 5 through the outlet pipe 7. Finally, the gas enters the array hollow pipe 11. The air pressure detector 17 set in different hollow pipes 11 detects the air pressure in the corresponding hollow pipe 11 and sends the air pressure data to the controller 18. The data processing end of the controller 18 processes the air pressure data. The controller 1 8 First, the air pump 6 is controlled to work at low power, or the air pump 6 is stopped, so that the gas gradually fills all the hollow tubes 11. When the internal air pressure of all the hollow tubes 11 is consistent, the controller 18 controls the air pump 6 to work at high power, so that the gas in all the hollow tubes 11 squeezes the array of lock balls 14 at the same time, and the lock balls 14 move downward. At the same time, the spring 13 is compressed, and the gas is discharged into the fermentation liquid in the fermentation tank 1 through the through hole 16 at the bottom, and the bottom of all the cylinders 12 are simultaneously exhausted to ensure that the air is more evenly distributed in the fermentation tank 1, so that the microorganisms are fully in contact with oxygen, thereby improving the fermentation effect.

[0026] Furthermore, a driving motor 19 is fixedly provided at the top center of the fermentation tank 1 through a fixing frame, a rotating rod 20 is fixedly provided at the bottom output end of the driving motor 19 through a coupling, the rotating rod 20 rotates through a bearing and penetrates into the interior of the fermentation tank 1, an array of fixed disks 21 are fixedly provided in an annular array on the circumferential surface below the middle of the rotating rod 20, an array of stirring paddles 22 are fixedly provided in an annular array on the circumferential surface of the fixed disk 21, an array of mounting rods 23 are fixedly provided in an annular array on the circumferential surface above the middle of the rotating rod 20, and an array of needle rods 24 are fixedly provided in an array at the bottom end of the mounting rod 23. When working, , it is necessary to mix and stir the fermentation liquid and air to ensure uniform distribution of materials and improve the gas-liquid mass transfer effect. First, start the drive motor 19, the rotating rod 20 rotates to drive the fixed plate 21 to rotate, the fixed plate 21 drives the stirring paddle 22 to rotate, and the stirring paddle 22 stirs the fermentation liquid and air in the fermenter 1 to make them more fully contact and mix. A large number of bubbles will be generated during the fermentation and stirring process. First, the addition of fermentation liquid should be lower than the needle rod 24. When the rotating rod 20 rotates, it drives the installation rod 23 to rotate, and the installation rod 23 drives the needle rod 24 to rotate. The sharp bottom end of the needle rod 24 will puncture the generated bubbles to achieve the purpose of removing foam.

[0027] Furthermore, a hollow ring 25 is fixedly arranged on the inner circumferential surface of the fermentation tank 1, and the interior of the hollow ring 25 is filled with heat transfer oil. An array of heating rods 26 are fixedly arranged in a circular array between the top and bottom of the hollow ring 25. A spiral cooling pipe 27 is fixedly arranged on the outer circumferential surface of the fermentation tank 1 in a spiral shape. A liquid inlet 28 is fixedly arranged on one side of the top head of the spiral cooling pipe 27 and is penetrated by it. A liquid outlet 29 is fixedly arranged on one side of the bottom end of the spiral cooling pipe 27 and is penetrated by it. A water pump 30 is provided at one side of the bottom end of the water pump 30, and the water outlet position of the water pump 30 is connected to the liquid inlet 28 through a liquid infusion pipe 31. A water tank 32 is provided at one side of the water pump 30, and the water suction position of the water pump 30 is connected to the water tank 32 through a water suction pipe 33. One end of the liquid outlet 29 is connected to the water tank 32 through a liquid outlet pipe 34. An array of refrigeration pipes 35 are fixedly provided at the bottom end of the water tank 32. The refrigeration pipes 35 and the power supply end of the heating rod 26 are electrically connected to the output end of the controller 18 through a wire. A temperature sensor 36 is fixedly arranged at the center of the inner bottom of the fermentation tank 1. The output end of the temperature sensor 36 is electrically connected to the input end of the controller 18 through a wire. When working, the staff needs to adjust the temperature in the fermentation tank 1 according to the fermentation needs to ensure the progress of the fermentation process. The controller 18 turns on the heating rod 26, and the heating rod 26 heats the surrounding heat transfer oil and transfers the temperature to the fermentation tank 1 to provide heat for the microorganisms. The temperature sensor 36 monitors the temperature of the fermentation liquid in real time and sends the temperature data to the data processing of the controller 18. On the management side, when the temperature of the fermentation liquid is too high, the controller 18 turns on the refrigeration pipe 35 to cool the coolant in the water tank 32, and then the controller 18 starts the water pump 30 to pump the coolant into the spiral cooling pipe 27 through the water suction pipe 33, the liquid infusion pipe 31 and the liquid inlet 28. The coolant flows in the spiral cooling pipe 27 to take away the heat of the fermentation tank 1, thereby achieving the effect of cooling. The coolant that absorbs the heat flows through the liquid outlet 29 to the liquid outlet pipe 34 and then enters the water tank 32, thereby achieving the purpose of recycling the coolant and reducing the waste of water resources.

[0028] Working principle: In order to make the air evenly distributed in the fermentation tank 1 and make the microorganisms fully contact with oxygen, thereby improving the fermentation effect, the staff first adds the fermentation liquid into the fermentation tank 1 through the feeding pipe 3, and then the staff operates the controller 18 to start the air pump 6. The external air first enters the air pipe 9 through the filtration of the air filter box 8, and then enters the annular hollow tube 5 through the outlet pipe 7. The gas then enters the array of hollow tubes 11. The air pressure detector 17 set in different hollow tubes 11 detects the air pressure in the corresponding hollow tube 11 and sends the air pressure data to the controller 18. The data processing end of the controller 18 processes the air pressure data. The controller 18 first controls the air pump 6 to Work at low power, or stop the air pump 6, so that the gas gradually fills all the hollow tubes 11. When the internal air pressure of all the hollow tubes 11 is consistent, the controller 18 controls the air pump 6 to work at high power, so that the gas in all the hollow tubes 11 squeezes the array lock balls 14 at the same time, and moves the lock balls 14 downward. At the same time, the spring 13 is compressed, and the gas is discharged into the fermentation liquid in the fermentation tank 1 through the through hole 16 at the bottom, and the bottom of all the cylinders 12 are simultaneously discharged to ensure that the air is more evenly distributed in the fermentation tank 1, so that the microorganisms are fully in contact with oxygen, thereby improving the fermentation effect; it is necessary to mix and stir the fermentation liquid and air to ensure that the materials are evenly distributed and improve the gas-liquid mass transfer effect. First, start the drive motor 19, and the rotating rod 2 0 rotation drives the fixed plate 21 to rotate, the fixed plate 21 drives the stirring paddle 22 to rotate, the stirring paddle 22 stirs the fermentation liquid and air in the fermentation tank 1, so that they are more fully contacted and mixed. A large number of bubbles will be generated during the fermentation and stirring process. First, the addition of fermentation liquid should be lower than the needle rod 24. When the rotating rod 20 rotates, it drives the mounting rod 23 to rotate, and the mounting rod 23 drives the needle rod 24 to rotate. The bottom end of the needle rod 24 is sharp and punctures the generated bubbles to achieve the purpose of removing foam; the staff needs to adjust the temperature in the fermentation tank 1 according to the fermentation needs to ensure the fermentation process. The controller 18 turns on the heating rod 26, and the heating rod 26 heats the surrounding heat transfer oil to transfer the temperature to In the fermentation tank 1, heat is provided for the microorganisms, and the temperature sensor 36 monitors the temperature of the fermentation liquid in real time and sends the temperature data to the data processing end of the controller 18. When the temperature of the fermentation liquid is too high, the controller 18 turns on the refrigeration pipe 35 to cool the coolant in the water tank 32. The controller 18 then starts the water pump 30 to pump the coolant into the spiral cooling pipe 27 through the suction pipe 33, the infusion pipe 31 and the liquid inlet 28. The coolant flows in the spiral cooling pipe 27 to take away the heat of the fermentation tank 1, thereby achieving the cooling effect. The coolant that absorbs the heat flows through the liquid outlet 29 to the liquid outlet pipe 34 and then enters the water tank 32, thereby achieving the purpose of recycling the coolant and reducing the waste of water resources.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An air distribution device, characterized in that: The fermentation tank (1) comprises a fermentation tank (1), wherein a plurality of supporting legs (2) are fixedly provided at the bottom end of the fermentation tank (1), a feeding pipe (3) is fixedly provided on one side of the top end of the fermentation tank (1) and is penetrated therethrough, a discharge pipe (4) is fixedly provided on one side of the bottom end of the fermentation tank (1) and is penetrated therethrough, an annular hollow pipe (5) is fixedly provided on the bottom of the circumferential surface of the outer wall of the fermentation tank (1), an air pump (6) is provided on one side of the fermentation tank (1), an air outlet end of the air pump (6) is penetrated and connected to the annular hollow pipe (5) through an air outlet pipe (7), an air filter box (8) is provided on one side of the air pump (6), an air inlet end of the air pump (6) is penetrated and connected to the air filter box (8) through an air pipe (9), and an air inlet pipe (10) is fixedly provided on one side of the air filter box (8) and is penetrated therethrough; An array of hollow tubes (11) are fixedly arranged in an annular array at the bottom of the inner wall circumference of the fermentation tank (1) and at a horizontal position of the annular hollow tube (5); an array of cylinders (12) are fixedly arranged in an array at the bottom of the circumference of the hollow tube (11) and are penetrated by the array; the top of the cylinder (12) is open and is connected to the hollow tube (11); a spring (13) is fixedly arranged at the center of the inner bottom end of the cylinder (12); a locking ball (14) is fixedly arranged at the top of the spring (13); and a locking ball (14) is fixedly arranged at the top of the inner wall circumference of the cylinder (12) at a position directly above the locking ball (14). A sealing ring (15) is arranged, the top of the locking ball (14) is pressed against the bottom of the sealing ring (15), the bottom end of the cylinder (12) is provided with a plurality of through holes (16) in a circular array, an air pressure detector (17) is fixedly arranged at one end of the hollow tube (11) near the center of the fermentation tank (1), a controller (18) is fixedly arranged at one side of the top end of the fermentation tank (1), the input end of the controller (18) is electrically connected to the output end of the air pressure detector (17) through a wire, and the output end of the controller (18) is electrically connected to the power supply end of the air pump (6) through a wire.

2. An air distribution device according to claim 1, characterized in that: A driving motor (19) is fixedly arranged at the center of the top end of the fermentation tank (1) via a fixing frame, a rotating rod (20) is fixedly arranged at the bottom output end of the driving motor (19) via a coupling, the rotating rod (20) rotates through a bearing and penetrates into the interior of the fermentation tank (1), an array of fixed disks (21) are fixedly arranged in a circular array on the circumferential surface below the middle of the rotating rod (20), and an array of stirring paddles (22) are fixedly arranged in a circular array on the circumferential surface of the fixed disk (21).

3. An air distribution device according to claim 2, characterized in that: An array of mounting rods (23) is fixedly arranged in an annular array on a circumferential surface slightly above the middle of the rotating rod (20), and an array of needle rods (24) is fixedly arranged in an array at the bottom end of the mounting rod (23).

4. An air distribution device according to claim 1, characterized in that: A hollow ring (25) is fixedly arranged on the inner circumferential surface of the fermentation tank (1), the interior of the hollow ring (25) is filled with heat transfer oil, and a plurality of heating rods (26) are fixedly arranged in a ring array between the top and bottom of the hollow ring (25). A spiral cooling pipe (27) is fixedly arranged in a spiral shape on the outer circumferential surface of the fermentation tank (1), a liquid inlet (28) is fixedly arranged on one side of the top head of the spiral cooling pipe (27) and is penetrated by the liquid inlet (28), a liquid outlet (29) is fixedly arranged on one side of the bottom end of the spiral cooling pipe (27) and is penetrated by the liquid outlet (29), and a liquid inlet (28) is fixedly arranged on one side of the bottom end of the spiral cooling pipe (27). A water pump (30) is provided, and the water outlet of the water pump (30) is connected to the liquid inlet (28) via a liquid infusion pipe (31). A water tank (32) is provided on one side of the water pump (30). The water suction port of the water pump (30) is connected to the water tank (32) via a water suction pipe (33). One end of the liquid outlet (29) is connected to the water tank (32) via a liquid outlet pipe (34). An array of refrigeration pipes (35) is fixedly provided at the bottom end of the water tank (32). The refrigeration pipes (35) are electrically connected to the power supply end of the heating rod (26) and the output end of the controller (18) via a wire.

5. An air distribution device according to claim 1, characterized in that: A temperature sensor (36) is fixedly arranged at the center of the inner bottom end of the fermentation tank (1), and the output end of the temperature sensor (36) is electrically connected to the input end of the controller (18) through a wire.

6. An air distribution device according to claim 1, characterized in that: An observation window (37) is fixedly provided on one side of the top end of the fermentation tank (1).

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