Liquid strain culture device

Abstract

The invention discloses a liquid strain culture device which comprises a culture tank, a stirring assembly, a transmission assembly, a supporting frame and a driving motor, the culture tank abuts against the top of the supporting frame, the bottom of the culture tank is sleeved with the stirring assembly, the stirring end of the stirring assembly is connected with the transmission assembly, one end of the transmission assembly is located in the culture tank, and the other end of the transmission assembly is connected with the driving motor. The driving motor is fixedly arranged at the top of the culture tank, and the output end of the driving motor penetrates through the culture tank and is connected with one end of the transmission assembly; the inner wall of the culture tank can be cleaned without opening the culture tank, and the risk that the interior of the tank body is polluted by air when the tank body is opened is reduced.

Description

Technical Field

[0001] The present invention relates to the field of liquid bacterial strain culture, and in particular to a liquid bacterial strain culture device. Background Art

[0002] Liquid culture is a technology that uses liquid culture medium to produce mycelium through deep fermentation in shake flasks or fermentation tanks. It has the advantages of short cycle, consistent fungus age, and fast germination, and is suitable for factory-based edible fungus production.

[0003] During the culture process, the inside of the culture tank needs to be sterilized in advance to ensure that the inside of the culture tank is a sterile environment.

[0004] After the cultivation is completed, the existing culture tank needs to be cleaned multiple times to ensure that all the residual bacteria on the inner wall are discharged to prevent them from affecting the cultivation of the next bacteria. Opening the culture tank to clean the bacteria inside increases the contact area between the culture tank and the air, making it easier for bacteria in the air to attach to the inside, which makes it easy to miss during sterilization, thereby affecting the fermentation of the bacteria. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent.

[0006] To achieve the above-mentioned purpose, the first aspect of the present invention proposes a liquid culture device, comprising: a culture tank, a stirring assembly, a transmission assembly, a support frame and a driving motor, wherein the culture tank is abutted against the top of the support frame, the stirring assembly is sleeved on the bottom of the culture tank, and the stirring end of the stirring assembly is connected to the transmission assembly, one end of the transmission assembly is inside the culture tank, and the other end passes through the stirring assembly and extends to the outside, the driving motor is fixedly arranged on the top of the culture tank, and the output end passes through the culture tank and is connected to one end of the transmission assembly; the transmission assembly comprises: a transmission rod, a reciprocating screw, a slider, a limit sleeve, a side gear, a transmission tooth and a transmission plate, wherein; the transmission rod and the reciprocating screw are respectively provided with a slot; one end of the transmission rod is connected to the output end of the driving motor, and the other end passes through the stirring assembly and extends to the outside; the reciprocating screw is sleeved on the outer wall of the transmission rod; the slider is movable The transmission gear is engaged with the two side gears respectively, and the other end of the transmission gear is sleeved on one end of the reciprocating screw; and is located on one side of the limiting sleeve, one end of the transmission plate is respectively arranged on the side gear away from one end of the driving motor, and the other end is respectively connected to the stirring assembly and the limiting sleeve; the limiting sleeve moves on the reciprocating screw, which will cause its transmission rod to drive the reciprocating screw and the stirring assembly to rotate respectively.

[0007] In addition, the liquid bacterial culture device proposed above according to the present invention may also have the following additional technical features: Furthermore, the culture tank is a double-layer tank, in which the interior is a culture layer and the exterior is a constant temperature layer; a water inlet pipe is provided on the top of the culture layer, and a ball valve is provided inside the water inlet pipe; a heat exchange pipe is provided on the top of the constant temperature layer, and the exteriors of the heat exchange pipes are respectively connected to constant temperature devices.

[0008] Furthermore, a partition is provided at one end of the reciprocating screw close to the side gear, and the partition is in contact with the side gear.

[0009] Furthermore, the stirring assembly includes: a bottom plate, a stirring rod and a connecting pipe, wherein: the bottom plate is sleeved on the bottom of the culture tank, the transmission rod and the reciprocating screw pass through the bottom plate respectively; one end of a plurality of stirring rods are respectively arranged in a circle on the top of the bottom plate and are located inside the culture layer; the other end of the stirring rod extends toward the direction of the drive motor and passes through the baffle respectively; the two connecting pipes are respectively arranged on the bottom plate and the top side wall of the culture tank, and are respectively connected to the culture layer.

[0010] Furthermore, a circle of balls is provided between the slider and the baffle, and the baffle and the inner wall of the culture layer abut against each other.

[0011] Furthermore, a limiting groove and an arcuate groove are respectively provided inside the limiting sleeve, wherein the arcuate groove is lower in height than the limiting groove.

[0012] Furthermore, a limit frame is axially connected to the transmission tooth, one end of the limit frame is axially connected to the transmission tooth, and the other end is sleeved on one end of the reciprocating screw and is located on one side of the partition.

[0013] Furthermore, the transmission plate includes: a first transmission plate, a second transmission plate and a threaded rod, wherein; one end of the first transmission plate is fixedly set on the side gear, and the other end is connected to the bottom of the base plate; one end of the second transmission plate is threadedly connected to the threaded rod, and the other end is sleeved in the slide groove; one end of the threaded rod is axially connected to the first transmission plate, and the other end passes through the second transmission plate and extends to the outside.

[0014] Furthermore, the support frame includes: a circular support frame and a support block, wherein: the support block is fixedly arranged on the outer wall of the culture tank; the circular support frame is located at the bottom of the support block and abuts against the support block.

[0015] According to the liquid culture device of the present invention, the transmission rod can be driven to rotate the stirring assembly through the side gear, transmission teeth and transmission plate by moving its limiting sleeve, thereby stirring the inside of its culture tank, or the reciprocating screw can be driven to rotate through the limiting ball, thereby making its slider move back and forth in a straight line along the reciprocating screw to clean the inner wall of its stirring tank.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 is a structural schematic diagram of a liquid strain culture device according to an embodiment of the present application; Figure 2 is a structural schematic diagram of another liquid strain culture device according to an embodiment of the present application; Figure 3 is a structural schematic diagram of a liquid strain culture device according to an embodiment of the present application; Figure 4 is a structural schematic diagram of a liquid strain culture device according to an embodiment of the present application; Figure 5 is a structural schematic diagram of a liquid strain culture device according to an embodiment of the present application; Figure 6 is a structural schematic diagram of a liquid strain culture device according to an embodiment of the present application; Figure 7 is a structural schematic diagram of a liquid strain culture device according to an embodiment of the present application; Figure 8 is a structural schematic diagram of a liquid strain culture device according to an embodiment of the present application; As shown in the figure: 1, culture tank; 11, culture layer; 111, water inlet pipe; 1111, ball valve; 12, constant temperature layer; 121, cold and heat exchange pipe; 2, stirring assembly; 21, bottom plate; 22, stirring rod; 23, connecting pipe; 3, transmission assembly; 31, transmission rod; 311, notch; 32, reciprocating screw; 321, partition plate; 33, sliding block; 331, baffle; 3311, ball bearing; 34, limiting sleeve; 341, limiting ball; 342, sliding groove; 343, limiting groove; 344, arc-shaped groove; 35, side gear; 351, support rod; 36, transmission tooth; 361, limiting frame; 37, transmission plate; 371, first transmission plate; 372, second transmission plate; 373, threaded rod; 4, support frame; 41, circular support frame; 42, support block; 5, driving motor. DETAILED DESCRIPTION

[0018] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which like reference numerals refer to like elements or elements having the same function throughout the description of the drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0019] A liquid strain culture device according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0020] As Figure 1As shown, the liquid bacterial culture device of the embodiment of the present invention may include: a culture tank 1, a stirring component 2, a transmission component 3, a support frame 4 and a drive motor 5, wherein: It should be noted that the culture tank 1 is abutted against the top of the support frame 4, the stirring assembly 2 is sleeved on the bottom of the culture tank 1, and the stirring end of the stirring assembly 2 is connected to the transmission assembly 3. One end of the transmission assembly 3 is inside the culture tank 1, and the other end passes through the stirring assembly 2 and extends to the outside. The drive motor 5 is fixedly arranged on the top of the culture tank 1, and the output end passes through the culture tank 1 and is connected to one end of the transmission assembly 3.

[0021] It is understandable that when the driving motor 5 is started, it drives the transmission component 3 to rotate, thereby enabling the transmission component 3 to clean its inner wall or drive the stirring component 2 to stir the culture liquid inside the culture tank 1.

[0022] like Figures 3 to 8 As shown, the liquid bacterial culture device of an embodiment of the present invention may include: a transmission component 3, wherein the transmission component 3 includes: a transmission rod 31, a reciprocating screw 32, a slider 33, a limiting sleeve 34, a side gear 35, a transmission tooth 36 and a transmission plate 37.

[0023] It should be noted that a slot 311 is respectively provided on the transmission rod 31 and the reciprocating screw 32. One end of the transmission rod 31 is connected to the output end of the drive motor 5, and the other end passes through the stirring assembly 2 and extends to the outside. The reciprocating screw 32 is sleeved on the outer wall of the transmission rod 31, and the slider 33 is movably set on the reciprocating screw 32, and a baffle 331 is rotatably provided on the slider 33. The baffle 331 is sleeved on the stirring end of the stirring assembly 2 and is inside the culture tank 1. The limiting sleeve 34 is sleeved on the end of the reciprocating screw 32 away from the drive motor 5 and is directly below the stirring assembly 2, and the limiting sleeve 34 is inside. A limiting ball 341 is provided on the outer wall of which a sliding groove 342 is provided. The limiting ball 341 is located inside the slot 311. The two side gears 35 are respectively mirror-imaged on the extended ends of the transmission rod 31, and support rods 351 are concentrically provided on the opposite surfaces of the two side gears 35 through the connecting shaft. The transmission teeth 36 are respectively engaged with the two side gears 35, and the other end of the transmission teeth 36 is sleeved on one end of the reciprocating screw 32 and is on one side of the limiting sleeve 34. One end of the transmission plate 37 is respectively provided on the side gear 35 away from one end of the drive motor 5, and the other end is respectively connected to the stirring assembly 2 and the limiting sleeve 34.

[0024] It should be further explained that a limiting groove 343 and an arc groove 344 are respectively provided inside the limiting sleeve 34 , wherein the limiting groove 343 is located on one side of the arc groove 344 , and the height of the arc groove 344 is lower than the limiting groove 343 .

[0025] It can be understood that the driving motor 5 starts to drive the transmission rod 31 to rotate, and when the limiting sleeve 34 is in the position of the Figure 3 limiting ball 341 is inside the arc-shaped groove 344, at this time, the transmission rod 31 rotates to drive the reciprocating lead screw 32 to rotate, so that the sliding block 33 moves linearly along the reciprocating lead screw 32.

[0026] When the limiting sleeve 34 moves to the side gear 35 direction, the limiting ball 341 is not affected by the slot 311 and does not move, so that when the limiting sleeve 34 and the transmission tooth 36 abut each other, the limiting ball 341 is inside the limiting groove 343, at this time, the transmission rod 31 rotates, and the limiting ball 341 is constantly lifted through the slot 311, so that the reciprocating lead screw 32 is not driven to rotate, and the limiting sleeve 34 and the transmission tooth 36 abut each other, at this time, the transmission tooth 36 transmits the force generated by the rotation of the transmission rod 31 to the stirring assembly 2 through the side gear 35 and the transmission plate 37, so that the stirring assembly 2 works.

[0027] It should be noted that the reciprocating lead screw 32 is provided with a partition plate 321 at one end close to the side gear 35, the partition plate 321 abuts against the side gear 35, the transmission tooth 36 is provided with a limiting frame 361 on the shaft, one end of the limiting frame 361 is connected to the shaft of the transmission tooth 36, and the other end is sleeved on one end of the reciprocating lead screw 32 and located on one side of the partition plate 321.

[0028] It can be understood that when the limiting sleeve 34 moves to the side gear 35 direction, the limiting frame 361 abuts against the partition plate 321, so that the limiting frame 361 cannot rotate on the reciprocating lead screw 32, so that the transmission rod 31 drives the side gear 35 connected thereto to rotate, the side gear 35 drives the transmission tooth 36 to rotate, so that the rotating transmission tooth 36 drives the mirror-image side gear 35 to rotate, so as to realize that the side gear 35 drives the transmission plate 37 to rotate, and the transmission plate 37 drives the stirring assembly 2 to work.

[0029] When the limiting sleeve 34 does not abut against the limiting frame 361, the transmission rod 31 drives the side gear 35 connected thereto to rotate, so that the side gear 35 drives the transmission tooth 36 to rotate, so that the limiting frame 361 is not affected, so that the transmission tooth 36 rotates and drives the limiting frame 361 to rotate on the reciprocating lead screw 32, at this time, the transmission tooth 36 rotates and performs a revolution along the side gear 35.

[0030] It should be noted that a circle of balls 3311 is arranged between the sliding block 33 and the baffle 331, and the baffle 331 abuts against the inner wall of the culture layer 11.

[0031] It is understandable that since the stirring end of the stirring component 2 is connected to the baffle 331, the stirring component 2 will drive the baffle 331 to rotate when it is working, and the ball 3311 set between the slider 33 can reduce the friction between the baffle 331 and the slider 33.

[0032] When the reciprocating screw 32 rotates, it drives the slider 33 to perform linear reciprocating motion along the reciprocating screw 32 , so that the baffle 331 provided on the slider 33 cleans the bacteria on the inner wall of the culture tank 1 .

[0033] It should be noted that the culture tank 1 is a double-layer tank body, with a culture layer 11 inside and a constant temperature layer 12 outside. A water inlet pipe 111 is provided on the top of the culture layer 11, and a ball valve 1111 is provided inside the water inlet pipe 111. A heat exchange pipe 121 is provided on the top of the constant temperature layer 12, and the outside of the heat exchange pipe 121 is connected to a constant temperature device respectively.

[0034] It can be understood that the heat exchange tube 121 provided on the constant temperature layer 12 can inject water of a fixed temperature into the constant temperature layer 12 through its constant temperature device, thereby ensuring that the inside of the culture layer 11 is in a constant temperature state and the liquid bacteria can be fermented stably, and the water inlet pipe 111 provided on the culture layer 11 can add its culture liquid and bacteria into the culture layer 11.

[0035] It should be noted that the transmission plate 37 includes: a first transmission plate 371, a second transmission plate 372 and a threaded rod 373, wherein one end of the first transmission plate 371 is fixedly set on the side gear 35, and the other end is connected to the bottom of the base plate 21; one end of the second transmission plate 372 is threadedly connected to the threaded rod 373, and the other end is sleeved in the slide groove 342; one end of the threaded rod 373 is axially connected to the first transmission plate 371, and the other end passes through the second transmission plate 372 and extends to the outside.

[0036] It can be understood that when the side gear 35 at the bottom rotates, it will drive its bottom plate 21 to rotate through the first transmission plate 371. At this time, the second transmission plate 372 rotates inside its slide groove 342, and the rotating threaded rod 373 will drive the second transmission plate 372 to move, so that the second transmission plate 372 drives the limit sleeve 34 to rise and fall through the forward and reverse rotation of the threaded rod 373.

[0037] like Figure 5 As shown, the liquid bacterial strain culture device according to the embodiment of the present invention may include a stirring assembly 2 , wherein the stirring assembly 2 includes: a bottom plate 21 , a stirring rod 22 and a connecting pipe 23 .

[0038] It needs to be explained that the bottom plate 21 is sleeved on the bottom of the culture tank 1, the transmission rod 31 and the reciprocating lead screw 32 pass through the bottom plate 21 respectively, a plurality of stirring rods 22 are fixedly arranged at one end of the bottom plate 21 in a circle and are located in the culture layer 11, the other end of the stirring rod 22 extends to the direction of the driving motor 5 and passes through the baffle 331 respectively, and the two connecting pipes 23 are fixedly arranged on the sidewall of the top of the bottom plate 21 and the culture tank 1 respectively and are in communication with the culture layer 11 respectively.

[0039] It can be understood that when the two side gears 35 rotate, the transmission plate 37 rotates, so that the transmission plate 37 drives the bottom plate 21 to rotate, and the rotating bottom plate 21 drives the stirring rod 22 arranged thereon to rotate, so that the stirring rod 22 stirs the culture liquid, and the connecting pipe 23 arranged at the bottom can exhaust air when the sliding block 33 moves.

[0040] As shown in Figure 2 The liquid strain culture device provided by the embodiment of the application can include a support frame 4, wherein the support frame 4 includes a circular support frame 41 and a support block 42, the support block 42 is fixedly arranged on the outer wall of the culture tank 1, and the circular support frame 41 is located at the bottom of the support block 42 and abuts against the support block 42.

[0041] The specific operation process of the application is as follows.

[0042] The staff will connect the two connecting pipes 23 to the high-temperature steam box, and then start the driving motor 5 to drive the transmission rod 31 to rotate the reciprocating lead screw 32, at this time, the sliding block 33 moves linearly along the reciprocating lead screw 32, when the sliding block 33 moves downward, the air at the bottom of the baffle 331 is exhausted into the high-temperature steam box through the connecting pipe 23 arranged on the bottom plate 21, and the high-temperature steam in the high-temperature steam box is sucked into the culture layer 11 at the top of the baffle 331 through the connecting pipe 23 arranged on the culture tank 1, and the sliding block 33 moves upward, and the sterilization effect in the culture layer 11 is achieved by continuously sucking and exhausting the high-temperature steam.

[0043] When sterilization is completed, the slider 33 is at the top of the culture layer 11. At this time, the connecting pipe 23 on the culture tank 1 is removed from the high-temperature steam box and sealed. At this time, the culture liquid and its bacterial strains are mixed in a sterile environment, and the container after mixing is connected to the water inlet pipe 111. At this time, the ball valve 1111 is rotated to make it interconnected with the inside of the culture layer 11. At this time, the drive motor 5 is started to move the slider 33 to the bottom. The moving slider 33 and the partition 321 will absorb the mixed bacterial strains into the inside of the culture layer 11 and be at the top of the slider 33 and the baffle 331. When the absorption is completed, the connecting pipe 23 on the bottom plate 21 is sealed, and the ball valve 1111 is rotated to seal the water inlet pipe 111. Finally, the container is removed from the water inlet pipe 111.

[0044] At this time, the threaded rod 373 is rotated so that its second transmission plate 372 drives the limiting sleeve 34 to move toward the partition 321. Finally, the limiting sleeve 34 will press the limiting frame 361 against the partition 321. At this time, the limiting ball 341 is inside the limiting groove 343. At this time, the rotation of the transmission rod 31 will drive the two side gears 35 to rotate together through the transmission teeth 36, so that its side gears 35 drive the transmission plate 37 to rotate, and the rotating first transmission plate 371 will drive its bottom plate 21 to rotate, so that its stirring rod 22 can stir the bacteria inside its culture layer 11 at a uniform speed.

[0045] At this time, the bacteria are fermenting inside the culture layer 11. When the temperature inside the culture layer 11 is not suitable, the constant temperature device can be connected to the heat exchange pipe 121 to continuously inject warm water into the constant temperature layer 12 to keep the temperature inside the culture layer 11 constant.

[0046] When the fermentation is completed, the limiting sleeve 34 is reset, and the connecting pipe 23 on the bottom plate 21 is connected to the cleaning liquid. The bacteria are discharged into the storage tank through the water inlet pipe 111 through the rising slider 33 and the baffle 331, and the baffle 331 will continuously scrape off the bacteria attached to the inner wall during the movement. When the slider 33 moves to the top, all the bacteria are discharged. At this time, the water inlet pipe 111 is closed, and the connecting pipe 23 on the culture tank 1 is connected to another cleaning liquid. The slider 33 continuously moves back and forth so that the cleaning liquid continuously flushes the internal space of the culture layer 11. After the flushing is completed, repeat the above steps to proceed to the next round of cultivation.

[0047] In summary, according to the liquid bacterial strain culture device of the embodiment of the present invention, the inner wall of the culture tank can be cleaned without opening it, reducing the risk of air contamination inside the tank when it is opened.

[0048] In the description of the specification, the terms "first", "second", "third", etc. are used only to describe various features, and are not to be construed as indicating or implying relative importance or a specific order of limiting the indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0049] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description 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 appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0050] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A liquid bacterial culture device, characterized in that: include: A culture tank (1), a stirring assembly (2), a transmission assembly (3), a support frame (4) and a drive motor (5), wherein: The culture tank (1) is arranged in contact with the top of the support frame (4), the stirring assembly (2) is sleeved on the bottom of the culture tank (1), and the stirring end of the stirring assembly (2) is connected to the transmission assembly (3), one end of the transmission assembly (3) is located inside the culture tank (1), and the other end passes through the stirring assembly (2) and extends to the outside, the driving motor (5) is fixedly arranged on the top of the culture tank (1), and the output end passes through the culture tank (1) and is connected to the transmission assembly (3); The transmission assembly (3) comprises: a transmission rod (31), a reciprocating screw (32), a slider (33), a limiting sleeve (34), a side gear (35), a transmission tooth (36) and a transmission plate (37), wherein; The transmission rod (31) and the reciprocating screw (32) are respectively provided with a notch (311); One end of the transmission rod (31) is connected to the output end of the drive motor (5), and the other end passes through the stirring assembly (2) and extends outward; The reciprocating screw (32) is sleeved on the outer wall of the transmission rod (31); The slider (33) is movably arranged on the reciprocating screw (32), and a baffle (331) is rotatably arranged on the slider (33); The baffle (331) is sleeved on the stirring end of the stirring assembly (2) and is located inside the culture tank (1); The limiting sleeve (34) is sleeved on the end of the reciprocating screw (32) away from the driving motor (5) and is located directly below the stirring assembly (2), and a limiting ball (341) is provided inside the limiting sleeve (34) and a sliding groove (342) is provided on the outer wall thereof; The limiting ball (341) is located inside the notch (311); The two side gears (35) are mirror-imaged and arranged on the extended ends of the transmission rod (31), and support rods (351) are concentrically arranged on the opposite surfaces of the two side gears (35) through shaft connection. The transmission teeth (36) are respectively engaged with the two side gears (35), and the other end of the transmission teeth (36) is sleeved on one end of the reciprocating screw (32) and is located on one side of the limiting sleeve (34); One end of the transmission plate (37) is respectively arranged on the side gear (35) away from one end of the drive motor (5), and the other end is respectively connected to the stirring assembly (2) and the limiting sleeve (34); The limiting sleeve (34) moves on the reciprocating screw (32), causing the transmission rod (31) to drive the reciprocating screw (32) and the stirring assembly (2) to rotate respectively.

2. A liquid bacterial culture device according to claim 1, characterized in that: The culture tank (1) is a double-layer tank, wherein the inner portion is a culture layer (11) and the outer portion is a constant temperature layer (12); A water inlet pipe (111) is provided on the top of the culture layer (11), and a ball valve (1111) is provided inside the water inlet pipe (111); A heat exchange pipe (121) is provided on the top of the constant temperature layer (12), and the outsides of the heat exchange pipe (121) are respectively connected to constant temperature devices.

3. A liquid bacterial culture device according to claim 1, characterized in that: A partition plate (321) is provided at one end of the reciprocating screw (32) close to the side gear (35), and the partition plate (321) and the side gear (35) are in contact with each other.

4. The liquid bacterial culture device according to claim 2, characterized in that: The stirring assembly (2) comprises: a bottom plate (21), a stirring rod (22) and a connecting pipe (23), wherein; The bottom plate (21) is sleeved on the bottom of the culture tank (1), and the transmission rod (31) and the reciprocating screw (32) respectively pass through the bottom plate (21); One end of each of the plurality of stirring rods (22) is fixedly arranged in a circumferential manner on the top of the bottom plate (21) and is located inside the culture layer (11); The other end of the stirring rod (22) extends toward the driving motor (5) and passes through the baffle (331). The two connecting pipes (23) are respectively fixedly arranged on the bottom of the base plate (21) and the top side wall of the culture tank (1), and are respectively connected to the culture layer (11).

5. A liquid bacterial culture device according to claim 4, characterized in that: A circle of balls (3311) is provided between the slider (33) and the baffle (331), and the baffle (331) and the inner wall of the culture layer (11) are in contact with each other.

6. The liquid bacterial culture device according to claim 1, characterized in that: A limiting groove (343) and an arc groove (344) are respectively provided inside the limiting sleeve (34), wherein the limiting groove (343) is located on one side of the arc groove (344), and the height of the arc groove (344) is lower than that of the limiting groove (343).

7. The liquid bacterial culture device according to claim 3, characterized in that: A limiting frame (361) is provided on the upper shaft of the transmission tooth (36), one end of the limiting frame (361) is provided on the transmission tooth (36) and the other end is sleeved on one end of the reciprocating screw (32) and is located on one side of the partition (321).

8. The liquid bacterial culture device according to claim 5, characterized in that: The transmission plate (37) comprises: a first transmission plate (371), a second transmission plate (372) and a threaded rod (373), wherein; One end of the first transmission plate (371) is fixedly disposed on the side gear (35), and the other end is connected to the bottom of the base plate (21); One end of the second transmission plate (372) is threadedly connected to the threaded rod (373), and the other end is sleeved in the sliding groove (342); One end of the threaded rod (373) is axially connected to the first transmission plate (371), and the other end passes through the second transmission plate (372) and extends outward.

9. The liquid bacterial culture device according to claim 1, characterized in that: The support frame (4) comprises: a circular support frame (41) and a support block (42), wherein; The support block (42) is fixedly arranged on the outer wall of the culture tank (1); The circular support frame (41) is located at the bottom of the support block (42) and abuts against the support block (42).

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