Probiotic fermentation device

Abstract

The invention discloses a probiotic fermentation device, and relates to the technical field of fermentation equipment. The device comprises a temperature control base and a fermentation barrel, two sets of electric telescopic rods are fixedly installed at the top of the temperature control base, a top cover is fixedly installed at the tops of the telescopic ends of the two sets of electric telescopic rods, the top cover is designed to be oval, a driving shaft is rotatably installed in the top cover, and an external thread is arranged on the outer side of the driving shaft; an exhaust hole is formed in the top of the top cover in a penetrating mode, and a liftable ejector rod is arranged in the exhaust hole. By adopting the design of the modularized fermentation barrel, a culture medium is sealed and stored in the fermentation barrel in advance, the fermentation barrel can be quickly completed after the last fermentation is completed, the internal temperature, pH, dissolved oxygen concentration and stirring speed of the fermentation barrel can be controlled after the fermentation barrel is replaced, the fermented fermentation barrel is integrally sealed and transferred, the transferring effect is good, and the fermentation efficiency is high. Fermentation equipment does not need to be shut down for cleaning for a long time, fermentation barrels can be cleaned intensively in the later period, and continuous fermentation efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of fermentation equipment technology, specifically to a probiotic fermentation device. Background Technology

[0002] Probiotics are a class of live microorganisms that are beneficial to the host and are widely used in food, health products, pharmaceuticals, and environmental remediation. The fermentation process of probiotics is a key step in their industrialization, directly determining the quality, activity, and stability of the strain and the product. Probiotic fermentation typically takes place in anaerobic or aerobic environments. Through the decomposition and metabolism of organic matter, probiotics produce various beneficial metabolites, such as lactic acid, short-chain fatty acids, vitamins, and other bioactive substances. The fermentation process is influenced by many factors, including temperature, pH, dissolved oxygen concentration, nutrient supply, and stirring rate.

[0003] A utility model patent (publication number: CN222043170U) discloses a probiotic fermentation device, including a sealed container. A control panel is provided on one side of the surface of the sealed container. Support rods are provided around the bottom of the sealed container. A mixing mechanism is interspersed in the middle of the sealed container. A scraper assembly that cooperates with the inner wall of the sealed container is provided on the outside of the mixing mechanism. An exhaust port is provided on one side of the top of the sealed container, and an adjustment component is provided at the top of the exhaust port. An inlet is provided on the other side of the top of the sealed container, and a cover is provided at the top of the inlet. Several heating rods are provided on the outside of the mixing mechanism. A temperature sensor is provided at the top of the scraper assembly. The heating rods are used to heat the inside of the sealed container, and the temperature sensor is used to control the temperature inside the sealed container to be maintained between 20 and 40 degrees Celsius via the control panel.

[0004] The patent and existing technologies have the following technical problems in practical use: 1. Currently, probiotic fermentation tanks are all fixed tanks. This means that after the probiotic fermentation process is completed, the probiotics need to be transferred from the fermentation tank. During the transfer process, the probiotics are easily exposed to the external environment and are easily disturbed. Then the fermentation tank needs to be cleaned before the culture medium and culture bacteria can be injected. In particular, the tank cleaning process is complicated, time-consuming, and has low efficiency for continuous fermentation.

[0005] 2. The existing tanks have a fixed internal space size, making it difficult to provide a uniform and precise growth environment for different strains and quantities of bacteria, thus affecting the stability, efficiency, and product quality of the fermentation process. Summary of the Invention

[0006] The purpose of this invention is to provide a probiotic fermentation device to solve the above problems.

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution: A probiotic fermentation device includes a temperature-controlled base and a fermentation tank. Two sets of electric telescopic rods are fixedly installed on the top of the temperature-controlled base. A top cover is fixedly installed on the top of the telescopic ends of the two sets of electric telescopic rods. The top cover has an elliptical design. A drive shaft is rotatably installed inside the top cover. An external thread is provided on the outside of the drive shaft. An exhaust hole is opened through the top of the top cover. A liftable top rod is provided inside the exhaust hole. The fermentation tank has an elliptical groove at its top, and is placed between the temperature control base and the top cover. A sliding hole is formed on the inner wall of the elliptical groove, and a triangular limiting block is slidably connected inside the sliding hole. A limiting spring is installed between the triangular limiting block and the inner wall of the sliding hole. A one-way injection port is provided on the outer side of the fermentation tank. A sealing plate is sealed and inserted into the inner wall of the elliptical groove. The sealing plate includes a sealing support part, and a rubber elastic part is provided at the top of the sealing support part. A nut sleeve is fixedly connected to the center of the rubber elastic part, and a spring skeleton is provided inside the rubber elastic part. A through-shaft hole is formed through the center of the sealing support part, and a drive shaft can seal through the through-shaft hole. A stirring assembly is provided in the opening at the top of the fermentation tank, and the drive shaft can drive the stirring assembly to operate.

[0008] Furthermore, a drive motor is fixedly installed on the top of the top cover, and the output end of the drive motor is connected to the drive shaft. An oxygen sensor and a temperature sensor are fixedly installed on the lower half of the inner wall of the top cover.

[0009] Furthermore, an outer guide tube is provided on the right side of the lower half of the top cover. A guide pin is sealed and inserted into the inner side of the outer guide tube. An oblique hole is opened inside the guide pin, and an insertion tube is inserted into the oblique hole. A sliding opening is opened at the top of the outer guide tube, and the insertion tube can slide into the sliding opening. A sealing block is provided at the end of the guide pin near the inside of the top cover. A sealing storage groove is opened on the inner wall of the top cover, and the sealing block is inserted into the sealing storage groove. A valve is provided on the insertion tube.

[0010] Furthermore, the stirring assembly includes a turntable rotatably installed in the top opening of the fermentation tank. The turntable has several windows arranged in a ring inside, and a stirring plate is sealed and hinged inside each window. A through hole is opened through the center of the turntable, and a connecting column is slidably connected inside the through hole. A top spring is provided between the connecting column and the turntable. Several pull rods are annularly hinged to the bottom end of the connecting column, and the other end of the pull rods is hinged to the bottom of the stirring plate. An insertion hole is opened at the top of the connecting column, and a drive shaft can be inserted into the insertion hole.

[0011] Furthermore, a rubber sleeve is provided inside the socket.

[0012] Furthermore, both the nut sleeve and the inside of the shaft hole are provided with rubber valve flaps.

[0013] Furthermore, a filter screen is provided inside the exhaust port.

[0014] Furthermore, a connecting ring is fixedly installed on the top of the top rod, and a threaded hole is opened inside the connecting ring. An adjusting screw is rotatably installed on the top of the top cover, and the adjusting screw is threadedly connected in the threaded hole.

[0015] Furthermore, a sealing step is provided at the top of the elliptical groove, and a stepped groove is provided at the bottom of the top cover, wherein the sealing step can be sealed and inserted into the stepped groove.

[0016] Furthermore, two sets of positioning guide posts are fixedly installed on the top of the temperature control base, and positioning rings are provided on the outer sides of both sets of positioning guide posts. Positioning ear plates are provided on both sides of the fermentation tank. When the fermentation tank is placed in the center of the temperature control base, the positioning ear plates are inserted into the positioning guide posts, and the positioning ear plates are located directly below the positioning rings. Guide plates are provided on both sides of the top cover, and guide holes are opened inside the guide plates, through which the positioning guide posts pass.

[0017] The beneficial effects of this invention are as follows: 1. This invention adopts a modular fermentation tank design. The culture medium is pre-sealed and stored in the fermentation tank. After the previous fermentation is completed, the drive shaft drives the sealing plate back into the elliptical groove through the external thread and nut sleeve, sealing the fermented tank. Then, the top cover is controlled to rise and detach from the fermentation tank. Next, the pre-stored fermentation tank is directly placed between the top cover and the temperature control base, which can quickly complete the fermentation tank replacement. After the replacement is completed, the drive shaft drives the sealing plate to rise into the top cover through the external thread and nut sleeve, opening the fermentation tank. It can control the internal temperature, pH, dissolved oxygen concentration and stirring rate of the fermentation tank. The fermented tank is transported in a sealed manner, which has a good transportation effect. The fermentation equipment does not need to be shut down for cleaning for a long time. The fermentation tank can be cleaned in a centralized manner later, and the continuous fermentation efficiency is high.

[0018] 2. The present invention uses the rubber elastic part on the sealing plate to limit the height of the sealing support part by the top rod. The nut sleeve can be detached from the external thread, so it will not affect the driving shaft to drive the stirring assembly. Furthermore, the size of the overall fermentation space can be controlled by the sealing support part, which is suitable for fermentation of different bacterial groups. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the invention; Figure 2 This is a schematic diagram of the temperature control base and top cover structure of the present invention; Figure 3 This is a schematic cross-sectional view of the top cover structure of the present invention; Figure 4 This is a schematic diagram of the fermentation tank and sealing plate structure of the present invention; Figure 5This is a cross-sectional view of the fermentation tank of the present invention; Figure 6 This is a cross-sectional view of the sealing plate structure of the present invention.

[0020] Attached reference numerals: 1. Temperature control base; 11. Electric telescopic rod; 12. Positioning guide post; 13. Positioning ring; 2. Top cover; 21. Drive motor; 22. Drive shaft; 23. External thread; 24. Oxygen sensor; 25. Temperature sensor; 26. External guide tube; 27. Sliding port; 28. Exhaust port; 29. ​​Top rod; 210. Connecting ring; 211. Adjusting screw; 3. Fermentation tank; 31. Oval trough; 32. Triangular limit block; 33. 34. Limiting spring; 35. Turntable; 36. Stirring plate; 37. Connecting column; 38. Top spring; 39. Pull rod; 30. Insertion hole; 310. Rubber sleeve; 311. Positioning ear plate; 4. One-way injection port; 5. Guide pin; 51. Inclined hole; 52. Sealing block; 6. Insert tube; 73. Sealing plate; 74. Sealing support part; 75. Rubber elastic part; 76. Spring skeleton; 77. Nut sleeve; 78. Rubber valve disc; 79. One-way exhaust valve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] Example 1, as Figures 1-6 As shown, a probiotic fermentation device includes a temperature control base 1 and a fermentation tank 3. Two sets of electric telescopic rods 11 are fixedly installed on the top of the temperature control base 1. A top cover 2 is fixedly installed on the top of the telescopic ends of the two sets of electric telescopic rods 11. The top cover 2 is elliptical in design. A drive shaft 22 is rotatably installed inside the top cover 2. An external thread 23 is provided on the outside of the drive shaft 22. An exhaust hole 28 is opened through the top of the top cover 2. A liftable top rod 29 is provided inside the exhaust hole 28. An elliptical groove 31 is provided on the top of the fermentation tank 3. The fermentation tank 3 is placed between the temperature control base 1 and the top cover 2. A sliding hole is provided on the inner wall of the elliptical groove 31. A triangular limiting block 32 is slidably connected inside the sliding hole. A limiting spring 33 is provided between the triangular limiting block 32 and the inner wall of the sliding hole. A one-way injection port 4 is provided on the outer side of the fermentation tank 3. A sealing plate 7 is sealed and inserted inside the elliptical groove 31. The sealing plate 7 includes a sealing support part 71. A rubber elastic part 72 is provided on the top of the sealing support part 71. A nut sleeve 74 is fixedly connected to the center of the rubber elastic part 72. A spring skeleton 73 is provided inside the rubber elastic part 72. A through-shaft hole is provided through the center of the sealing support part 71. The drive shaft 22 can seal through the through-shaft hole. A stirring assembly is provided in the opening at the top of the fermentation tank 3. The drive shaft 22 can drive the stirring assembly to run.

[0023] Furthermore, a drive motor 21 is fixedly installed on the top of the top cover 2, and the output end of the drive motor 21 is connected to the drive shaft 22. An oxygen sensor 24 and a temperature sensor 25 are fixedly installed on the lower half of the inner wall of the top cover 2.

[0024] Furthermore, an outer conduit 26 is provided on the right side of the lower half of the top cover 2. A guide pin 5 is sealed inside the outer conduit 26. The guide pin 5 ensures that the bottom end of the insertion tube 6 does not come into contact with the outside when not in use. An oblique hole 51 is opened inside the guide pin 5, and the insertion tube 6 is inserted inside the oblique hole 51. A sliding opening 27 is opened at the top of the outer conduit 26, and the insertion tube 6 can slide into the sliding opening 27. A sealing block 52 is provided at the end of the guide pin 5 near the inside of the top cover 2. A sealing storage groove is opened on the inner wall of the top cover 2, and the sealing block 52 is inserted into the sealing storage groove to improve the sealing performance. A valve is provided on the insertion tube 6.

[0025] Assembly: The culture medium is pre-stored in the fermentation tank 3 and placed in a storage room for centralized storage. When using, the fermentation tank 3 is taken out and placed between the temperature control base 1 and the top cover 2. Then, the external nitrogen gas source is connected to the one-way injection port 4, and then the drive motor 21 is powered on. The drive motor 21 drives the drive shaft 22 to rotate, and the electric telescopic rod 11 drives the top cover 2 to descend. The top cover 2 drives the drive shaft 22 to descend. The unthreaded part of the lower end of the drive shaft 22 first passes through the nut sleeve 74 and the shaft hole, and then connects to the stirring assembly. When the external thread 23 descends to the position of the nut sleeve 74, the external thread 23 screws down into the threaded nut sleeve 74. After the top cover 2 and the elliptical groove 31 are sealed, the top cover 2 stops descending. At this time, the drive shaft 22 stops descending. As the drive shaft 22 rotates, the nut sleeve 74 rotates upward relative to the drive shaft 22. At this time, the tension provided by the spring skeleton 73 is much greater than the upward resistance of the sealing support part 71, so the nut... The sleeve 74, driven by the rubber elastic part 72, raises the sealing support part 71. The sealing support part 71 enters the top cover 2 along the elliptical groove 31 and slides upward along the top cover 2. During this process, the sealing plate 7 causes the fermentation tank 3 to draw in air, automatically drawing in nitrogen. When the nut sleeve 74 disengages from the external thread 23, the sealing support part 71 stops rising. During this process, the sealing plate 7 discharges the air in the top cover 2 through the exhaust port 28. Subsequently, the top rod 29 is controlled to descend to the designated position as needed. The top rod 29 pushes the sealing support part 71 downward relative to the nut sleeve 74. The sealing support part 71 stretches the rubber elastic part 72 and the spring frame 73. By controlling the position of the sealing support part 71, the fermentation space can be adjusted, suitable for different bacterial groups. During the descent of the sealing support part 71, the air above is discharged through the one-way exhaust valve 76, maintaining an anaerobic environment in the fermentation space. Finally, the cultured bacteria using syringes are injected into the fermentation tank 3 through the one-way injection port 4. Therefore, during the assembly process, an anaerobic environment can be automatically maintained, and the culture medium does not come into contact with the outside environment. It should be noted that since the drive shaft 22 can seal the through-hole, the sealing support 71 will not leak air and can stably adjust the space.

[0026] pH control: Push the guide pin 5 into the top cover 2, so that the bottom end of the inclined hole 51 enters the top cover 2. At this time, the insertion tube 6 can be inserted into the fermentation tank 3 from the outside along the inclined hole 51 to extract the solution for pH testing or add pH-adjusting agents. Then, the temperature in the fermentation tank 3 is controlled by the integrated heating and cooling temperature control base 1.

[0027] After fermentation, the drive motor 21 drives the drive shaft 22 to reverse. Under the downward pull of the spring skeleton 73, the nut sleeve 74 engages with the external thread 23 and then rotates downward until the nut sleeve 74 passes through the sealing support part 71. The spring skeleton 73 then returns to its original position. At this time, the nut sleeve 74 pushes the sealing support part 71 down, and the sealing plate 7 descends as a whole until it is reinserted into the elliptical groove 31. The sealing support part 71 pushes the triangular limit block 32 into the sliding hole through the inclined surface of the triangular limit block 32. When the sealing support part 71 moves away from the triangular limit block 32, the limit spring 33 pushes the triangular limit block 32 out. The triangular limit block 32 makes the sealing plate 7 fit tightly in the elliptical groove 31, completing the sealing of the fermentation tank 3. During this process, excess nitrogen is discharged upward through the one-way exhaust valve 76. Finally, after sealing, the fermentation tank 3 still maintains an anaerobic environment, which is convenient for subsequent transfer. Finally, control the top cover 2 to rise, remove the fermented and sealed fermentation tank 3, and place a new fermentation tank 3. Therefore, fermentation can be carried out continuously by simply replacing the modular fermentation tank 3. Finally, collect and clean the fermentation tanks 3.

[0028] It should be noted that during the descent of the sealing plate 7, the inner wall of the top cover 2 will also be scraped, and this scraping will be done after each fermentation to ensure that no debris accumulates on the inner wall of the top cover 2, thereby reducing the impact on the fermentation environment.

[0029] Example 2, based on the above examples, further includes a stirring assembly comprising a turntable 34 rotatably mounted in the top opening of the fermentation tank 3. The turntable 34 has several windows annularly opened inside, and a stirring plate 35 is hinged to the inside of each window. A through hole is opened through the center of the turntable 34, and a connecting post 36 is slidably connected to the inside of the through hole. A top spring 37 is provided between the connecting post 36 and the turntable 34. Several pull rods 38 are annularly hinged to the bottom end of the connecting post 36, and the other end of the pull rods 38 is hinged to the bottom of the stirring plate 35. An insertion hole 39 is opened at the top of the connecting post 36, and the drive shaft 22 can be inserted into the insertion hole 39.

[0030] The top cover 2 drives the drive shaft 22 to descend, and at the same time the drive motor 21 drives the drive shaft 22 to rotate. The unthreaded part of the lower end of the drive shaft 22 first passes through the nut sleeve 74 and then inserts into the insertion hole 39. Then the top cover 2 continues to descend, and the drive shaft 22 pushes the connecting column 36 to descend. The connecting column 36 compresses the top spring 37, and the connecting column 36 drives the pull rod 38 to descend. The pull rod 38 drives the stirring plate 35 to swing downward. At the same time, the window opens, so that the fermentation tank 3 is connected to the top cover 2. During stirring, the drive shaft 22 drives the connecting column 36 to rotate. The connecting column 36 drives the stirring plate 35 and the turntable 34 to rotate as a whole through the pull rod 38. The stirring plate 35 stirs the fermentation liquid. When pH detection and control are required, the drive motor 21 is de-energized, the insertion tube 6 is inserted, and it passes through the window into the fermentation tank 3 to extract the detection liquid or inject the conditioning liquid. At the same time, the nut sleeve 74 will not continue to rise to ensure stable stirring. Stirring and venting do not affect each other. Meanwhile, the top cover 2 rises, and when the drive shaft 22 is disengaged from the connecting column 36, the top spring 37 pushes the connecting column 36 to rise. The connecting column 36 drives the stirring plate 35 to swing upward through the pull rod 38 to seal the window. Together with the sealing plate 7, they form a double seal for the fermentation tank 3.

[0031] In embodiment three, based on the above embodiments, a rubber sleeve 310 is further provided inside the insertion hole 39. The rubber sleeve 310 allows the drive shaft 22 to be tightly inserted into the insertion hole 39, and the frictional force generated by the compression of the rubber sleeve 310 stably drives the connecting column 36 to rotate.

[0032] Example 4, based on the above examples, further includes rubber valve flaps 75 inside both the nut sleeve 74 and the shaft hole. With the rubber valve flaps 75 installed, when the unthreaded portion of the drive shaft 22 passes through the rubber valve flaps 75, the rubber valve flaps 75 can be opened. When the external thread 23 is threadedly connected to the nut sleeve 74, the rubber valve flaps 75 are pressed against the threaded connection, improving sealing. Simultaneously, when the drive shaft 22 is pulled away from the nut sleeve 74 and the shaft hole, the sealing plate 7 remains sealed, ensuring the overall sealing of the fermentation tank 3 during transport. Furthermore, the rubber valve flaps 75 in the shaft hole maintain a seal between the drive shaft 22 and the shaft hole, allowing the sealing support 71 to better adjust the fermentation space.

[0033] Example 5, based on the above examples, further includes an exhaust port 28 with a filter screen inside. This filters the gas drawn into the top cover 2, reducing contamination of the top cover 2.

[0034] Example 6, based on the above examples, further includes a connecting ring 210 fixedly installed on the top of the top rod 29, the connecting ring 210 having a threaded hole inside, and an adjusting screw 211 rotatably installed on the top of the top cover 2, the adjusting screw 211 being threadedly connected in the threaded hole.

[0035] By rotating the adjusting screw 211, the adjusting screw 211 drives the connecting ring 210 to rise and fall through the threaded hole. The connecting ring 210 drives the top rod 29 to rise and fall, thereby pushing the sealing plate 7 to fall.

[0036] Example 7, based on the above examples, further includes a sealing step at the top of the elliptical groove 31 and a stepped groove at the bottom of the top cover 2, wherein the sealing step can be sealed and inserted into the stepped groove. This design improves the sealing performance between the top cover 2 and the elliptical groove 31.

[0037] Example 8, based on the above examples, further includes two sets of positioning guide posts 12 fixedly installed on the top of the temperature control base 1. Positioning rings 13 are provided on the outer sides of both sets of positioning guide posts 12. Positioning ear plates 311 are provided on both sides of the fermentation tank 3. When the fermentation tank 3 is placed in the center of the temperature control base 1, the positioning ear plates 311 are inserted into the positioning guide posts 12 and are located directly below the positioning rings 13. Guide plates are provided on both sides of the top cover 2. Guide holes are opened inside the guide plates, and the positioning guide posts 12 pass through the guide holes.

[0038] The positioning guide post 12 makes the lifting and lowering of the top cover 2 more stable. The positioning ear plate 311 and the positioning ring 13 make the fermentation tank 3 able to be placed in a designated position, making operation more convenient. At the same time, the positioning ear plate 311 makes it easier to move the fermentation tank 3.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A probiotic fermentation device comprising a temperature-controlled base (1) and a fermentation vat (3), characterized in that, The top of the temperature control base (1) is fixedly provided with two groups of electric telescopic rods (11), the top of the telescopic end of the two groups of electric telescopic rods (11) is fixedly provided with a top cover (2), the top cover (2) is designed in an oval shape, a driving shaft (22) is rotatably arranged in the top cover (2), an external thread (23) is arranged on the outer side of the driving shaft (22), an exhaust hole (28) is formed in the top of the top cover (2), and a liftable top rod (29) is arranged in the exhaust hole (28). An oval groove (31) is formed in the top of the fermentation barrel (3), the fermentation barrel (3) is arranged between the temperature control base (1) and the top cover (2), a sliding hole is formed in the inner wall of the oval groove (31), a triangular limiting block (32) is slidably connected in the sliding hole, a limiting spring (33) is arranged between the triangular limiting block (32) and the inner wall of the sliding hole, a one-way injection port (4) is arranged on the outer side of the fermentation barrel (3), a sealing plate (7) is sealingly inserted into the oval groove (31), the sealing plate (7) comprises a sealing support portion (71), a rubber elastic portion (72) is arranged on the top of the sealing support portion (71), a nut sleeve (74) is fixedly connected to the middle of the rubber elastic portion (72), a spring skeleton (73) is arranged in the rubber elastic portion (72), a shaft hole is formed in the center of the sealing support portion (71), the driving shaft (22) can sealingly pass through the shaft hole, and a stirring assembly is arranged in the top opening of the fermentation barrel (3), the driving shaft (22) can drive the stirring assembly to operate.

2. The probiotic fermentation apparatus of claim 1, wherein, A driving motor (21) is fixedly arranged on the top of the top cover (2), the output end of the driving motor (21) is connected with the driving shaft (22), and an oxygen sensor (24) and a temperature sensor (25) are fixedly arranged on the lower half of the inner wall of the top cover (2).

3. A probiotic fermentation apparatus as claimed in claim 2, wherein, An outer guide pipe (26) is arranged on the right side of the lower half of the top cover (2), a guide pin (5) is sealingly inserted into the inner side of the outer guide pipe (26), an inclined hole (51) is formed in the inner side of the guide pin (5), a pipe (6) is inserted into the inclined hole (51), a sliding hole (27) is formed in the top of the outer guide pipe (26), the pipe (6) can slide into the sliding hole (27), and a sealing block (52) is arranged on the end of the guide pin (5) close to the inner side of the top cover (2), a sealing receiving groove is formed in the inner wall of the top cover (2), the sealing block (52) is inserted into the sealing receiving groove, and a valve is arranged on the pipe (6).

4. The probiotic fermentation apparatus of claim 1, wherein, The stirring assembly comprises a rotating disc (34) rotatably arranged in the top opening of the fermentation barrel (3), a plurality of windows are annularly formed in the inner side of the rotating disc (34), a stirring plate (35) is sealingly hinged in the inner side of the window, a through hole is formed in the middle of the rotating disc (34), a connecting column (36) is sealingly and slidably connected in the through hole, a top spring (37) is arranged between the connecting column (36) and the rotating disc (34), a plurality of pull rods (38) are annularly hinged to the bottom end of the connecting column (36), the other ends of the pull rods (38) are hingedly connected to the bottom of the stirring plate (35), an insertion hole (39) is formed in the top of the connecting column (36), and the driving shaft (22) can be inserted into the insertion hole (39).

5. A probiotic fermentation apparatus as claimed in claim 4, wherein, The inside of the jack (39) is internally provided with a rubber sleeve (310).

6. A probiotic fermentation apparatus as claimed in claim 5, wherein, The nut sleeve (74) and the inside of the through shaft hole are both provided with a rubber valve (75).

7. The probiotic fermentation apparatus of claim 1, wherein, The inside of the exhaust hole (28) is provided with a filter screen.

8. The probiotic fermentation apparatus of claim 1, wherein, The top of the ejector rod (29) is fixedly provided with a connecting ring (210), the inside of the connecting ring (210) is provided with a threaded hole, the top of the top cover (2) is rotatably provided with an adjusting screw (211), and the adjusting screw (211) is screw-connected in the threaded hole.

9. The probiotic fermentation apparatus of claim 1, wherein, The top of the oval groove (31) is provided with a sealing step, the bottom of the top cover (2) is provided with a step groove, and the sealing step can be inserted and sealed in the step groove.

10. The probiotic fermentation apparatus of claim 1, wherein, The top of the temperature control base (1) is fixedly provided with two groups of positioning guide columns (12), the outer sides of the two groups of positioning guide columns (12) are both provided with positioning rings (13), the two sides of the fermentation barrel (3) are both provided with positioning ear plates (311), when the fermentation barrel (3) is placed at the center of the temperature control base (1), the positioning ear plates (311) are inserted and sleeved on the positioning guide columns (12), and the positioning ear plates (311) are located directly below the positioning rings (13), the two sides of the top cover (2) are both provided with guide pieces, the inside of the guide pieces is provided with guide holes, and the positioning guide columns (12) penetrate through the guide holes.

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