Immune bacteria culture device convenient to take

Abstract

The invention discloses a convenient-to-take immune bacteria culture device, and belongs to the technical field of medical examination equipment, the convenient-to-take immune bacteria culture device comprises a storage cabinet and a bacteria culture tank, the inner bottom wall of the storage cabinet is fixedly connected with a concave shell, and the two radial ends of the concave shell are slidably connected with two symmetrically arranged moving racks; two sliding holes corresponding to the two movable racks are formed in the front side wall of the transverse end of the concave shell, and the inner walls of the two transverse ends of the concave shell are rotationally connected with circular gears engaged with the movable racks through rotating shafts. According to the device, by arranging a locking mechanism, a movable rack and a circular gear, the placement plate can be conveniently locked or moved, then the bacterial culture tank can be conveniently taken, the bacterial culture tank is more stable, secondly, by arranging an elastic mechanism, a positioning sliding groove, a clamping groove and a clamping block, the bacterial culture tank can be conveniently mounted and dismounted, then the bacterial culture tank can be conveniently taken, and the device is convenient to use. And fixation is firm.

Description

Technical Field

[0001] The invention relates to the technical field of medical testing equipment, in particular to an immune bacteria culture device which is easy to take. Background Art

[0002] With the advancement of science, the in vitro culture technology of cells and tissues has become relatively mature, and there have been significant breakthroughs in the types and quantities of cells that can be cultured. Some cells and tissues can grow in a suspended state, but some animal cells need to adhere to the surface, so the culture environment must be non-toxic, sterile and easy to observe. Culture bottles have become a more common choice. Cell culture is mainly aimed at immune cells to observe the resistance of immune cells. Immune cells refer to cells that participate in or are related to immune responses. Immune prevention is an important function of the human body. Immune cells can identify and eliminate mutated tumor cells, aging cells or other harmful components in the human body. The importance of immune cells is obvious.

[0003] In the prior art, immune bacteria are cultured in immune bacteria culture tanks and stored in culture storage cabinets. However, the existing culture devices generally have multiple bacterial culture tanks. Bacterial culture takes a relatively long time. During the culture process, the bacteria are observed many times. The bacterial culture device is not firmly fixed to the bacterial culture tank. When taking it out, the culture dish needs to be taken out manually. During the taking out process, the culture tank is easily tipped over, causing the bacteria inside it to be affected. Summary of the invention

[0004] The object of the present invention is to provide an immune bacteria culture device that is easy to take, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an immune bacteria culture device that is easy to take, comprising a storage cabinet and a bacteria culture tank, wherein the inner bottom wall of the storage cabinet is fixedly connected with a concave shell, and two radial ends of the concave shell are slidably connected with two symmetrically arranged moving racks, and the front side wall of the transverse end of the concave shell is provided with two sliding holes respectively arranged corresponding to the two moving racks, and the inner walls at both transverse ends of the concave shell are rotatably connected with circular gears meshing with the moving racks through a rotating shaft, and the inner walls at the transverse ends of the concave shell are provided with a locking mechanism for locking the rotation of the two circular gears, and the two moving gears are The upper side walls of the strips are fixedly connected with L-shaped frames, and the upper side walls of the two radial ends of the concave shell are provided with sliding openings. The two L-shaped frames pass through the two sliding openings respectively and are fixedly connected with a placement plate. The upper side walls of the placement plate are evenly provided with mounting grooves. The lower end of the bacterial culture tank is fixedly connected with a mounting block, and the mounting block is inserted in the mounting groove. The inner bottom wall of the mounting groove is provided with an elastic mechanism, and a clamping block is fixedly connected to one side of the mounting block. The inner side wall of the mounting groove is provided with a positioning slide groove corresponding to the clamping block, and the inner wall of the mounting groove is provided with a clamping groove connected to the lower end of the positioning slide groove, and the clamping block is clamped in the clamping groove.

[0006] As a further scheme of the present invention: wherein, the locking mechanism includes a handwheel handle inserted into the front side wall of the concave shell and rotatably connected thereto, one end of the handwheel handle extends into the concave shell and is fixedly connected to a driving bevel gear, and the inner wall of the lateral end of the concave shell is fixedly connected to two symmetrically arranged support plates, a bidirectional screw rod is rotatably connected between the two support plates through a bearing seat, a driven bevel gear meshing with the driving bevel gear is fixedly connected to the bidirectional screw rod, two symmetrically arranged threaded blocks are threadedly connected to the bidirectional screw rod, and two symmetrically arranged push rods are fixedly connected to the far side of the two threaded blocks, and the two push rods both penetrate the support plate and are fixedly connected to a locking block, and one side of the locking block is meshingly connected to the circular gear.

[0007] As a further solution of the present invention: wherein, a front side wall of the concave shell is provided with an avoidance groove, and the handwheel handle is located in the avoidance groove.

[0008] As a further solution of the present invention: wherein, the side wall of the support plate is provided with two through holes, and the two push rods are respectively arranged through the two through holes.

[0009] As a further solution of the present invention: wherein, the elastic mechanism includes two compression springs fixed on the bottom wall of the mounting groove, the upper ends of the two compression springs are fixedly connected with a lifting plate, the inner wall of the mounting groove is slidably connected to the outer wall of the lifting plate, and the lifting plate is tightly arranged against the mounting block.

[0010] As a further solution of the present invention: wherein, one end of the movable rack is fixedly connected to a guide slider, and the radial end inner wall of the concave shell is slidably connected to the outer side wall of the guide slider.

[0011] As a further solution of the present invention: wherein, wear-resistant strips are fixedly connected to the corners on both sides of the bottom of the storage cabinet.

[0012] As a further solution of the present invention: wherein, a handle is fixedly connected to the front side wall of the placement plate.

[0013] As a further scheme of the present invention: wherein, the clamping mechanism includes a concave cover shell connected to the upper side of the storage cabinet, a hand lever is inserted and rotatably connected to one side of the concave cover shell, the hand lever extends into the concave cover shell and is fixedly connected to two first bevel gears, and the two vertical end inner walls of the concave cover shell are rotatably connected to two vertically symmetrical threaded rods, the upper ends of the threaded rods are fixedly connected to the second bevel gear meshing with the first bevel gear, the two threaded rods are threadedly connected to nut blocks, one side of the nut block is fixedly connected to a connecting rod, the two connecting rods extend into the storage cabinet and are fixedly connected to a pressure plate, and the lower side wall of the pressure plate is provided with a groove corresponding to the bacterial culture tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This is an immune bacteria culture device that is easy to take. By setting a locking mechanism, a movable rack and a circular gear, the handwheel handle is turned. Since the active bevel gear is meshed with the driven bevel gear, the bidirectional screw is driven to rotate. Since the bidirectional screw is threadedly connected with the two threaded blocks respectively, at this time, the two threaded blocks are forced to move toward each other, thereby driving the locking block fixed to the push rod to move until it is separated from the circular gear. At this time, the rotation of the circular gear is unrestricted, so that the movable rack can be displaced, and then the placement plate can be pulled out of the storage cabinet, so that the bacterial culture tank is convenient to take. On the contrary, when the locking block is meshed with the circular gear, the placement plate can be prevented from being displaced, so that the bacterial culture tank is more stable, the operation is simple, and the locking is reliable.

[0016] 2. The immune bacterial culture device which is easy to take out is provided with an elastic mechanism, a positioning slide groove, a card slot and a card block. It only needs to rotate the bacterial culture tank to move the card block from the card slot to the positioning slide groove. At this time, the elastic mechanism automatically pushes the bacterial culture tank out of the mounting groove, which is convenient for taking out. When fixing the bacterial culture tank, align the card block with the positioning slide groove, and then insert the mounting block into the mounting groove. At this time, the mounting block moves down to squeeze the lifting plate. At this time, the compression spring is squeezed and contracts to generate elastic force until the mounting block is moved down to the card slot. Then, the bacterial culture tank is rotated to make the card block stuck in the card slot. At this time, the elastic force of the compression spring can be used to push the card block tightly against the card slot, so as to realize the installation and fixation of the bacterial culture tank. The operation is simple and the fixation is reliable.

[0017] 3. By setting up the clamping mechanism, when carrying the device, the handle can be rotated. Since the two first bevel gears are respectively meshed with the two second bevel gears, the two threaded rods are driven to rotate. At this time, the two nut blocks are forced to move downward synchronously, and then the pressure plate fixed to the connecting rod is driven to move downward until the lid of the grooved bacterial culture tank is tightened, which can further fix the bacterial culture tank and prevent the lid of the bacterial culture tank from being opened to cause bacterial leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the concave shell and the placement plate in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the concave shell in the present invention; Figure 4 It is a schematic diagram of the top cross-sectional structure of the concave shell in the present invention; Figure 5 It is a schematic diagram of the front cross-sectional structure of the connection between the placement plate and the bacteria culture tank in the present invention; Figure 6 It is a schematic diagram of the front cross-sectional structure of the concave cover shell in the present invention.

[0023] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0024] 1. Storage cabinet; 2. Bacteria culture tank; 3. Concave shell; 4. Moving rack; 5. Rotating shaft; 6. Circular gear; 7. L-shaped frame; 8. Slide; 9. Placement plate; 10. Mounting groove; 11. Mounting block; 12. Block; 13. Positioning slide groove; 14. Block; 15. Handwheel handle; 16. Active bevel gear; 17. Support plate; 18. Bidirectional screw rod; 19. Driven bevel gear; 20. Threaded block; 21. Push rod; 22. Lock block; 23. Avoidance groove; 24. Compression spring; 25. Lifting plate; 26. Guide slider; 27. Wear-resistant strip; 28. Handle handle; 29. ​​Slide hole; 30. Concave cover; 31. Turning handle; 32. First bevel gear; 33. Threaded rod; 34. Second bevel gear; 35. Nut block; 36. Connecting rod; 37. Press plate; 38. Groove. DETAILED DESCRIPTION

[0025] See also Figures 1 to 6 In the practical embodiment, an immune bacteria culture device that is easy to take includes a storage cabinet 1 and a bacteria culture tank 2. The inner bottom wall of the storage cabinet 1 is fixedly connected with a concave shell 3. Two symmetrically arranged moving racks 4 are slidably connected in the two radial ends of the concave shell 3. The front side wall of the transverse end of the concave shell 3 is provided with two sliding holes 29 respectively arranged corresponding to the two moving racks 4. The inner walls of the transverse ends of the concave shell 3 are rotatably connected with circular gears 6 meshing with the moving racks 4 through a rotating shaft 5. The inner wall of the transverse end of the concave shell 3 is provided with a locking mechanism for locking the rotation of the two circular gears 6. The upper side walls of the two moving racks 4 are fixedly connected with L-shaped frames 7. The upper side walls of the two radial ends of the concave shell 3 are provided with sliding openings 8. The two L-shaped frames 7 pass through the two sliding openings 8 and are fixedly connected with a placement plate 9. The upper side walls of the placement plate 9 are evenly provided with mounting grooves 10. The lower end of the bacterial culture tank 2 is fixedly connected with a mounting block 11, and the mounting block 11 is inserted in the mounting groove 10. The inner bottom wall of the mounting groove 10 is provided with an elastic mechanism. A clamping block 12 is fixedly connected to one side of the mounting block 11. The inner side wall of the mounting groove 10 is provided with a positioning slide groove 13 corresponding to the clamping block 12. The inner wall of the mounting groove 10 is provided with a clamping groove 14 connected to the lower end of the positioning slide groove 13. The clamping block 12 is clamped in the clamping groove 14. When the bacterial culture tank 2 needs to be taken out, the locking mechanism loses the lock on the two circular gears 6. At this time, the placement plate 9 can be pulled out of the storage cabinet 1, so as to facilitate the taking of the bacterial culture tank 2. Secondly, the bacterial culture tank 2 is rotated to displace the clamping block 12 from the clamping groove 14 to the positioning slide groove 13. At this time, the elastic mechanism automatically pushes the bacterial culture tank 2 out of the mounting groove 10, and the installation and disassembly are simple and convenient to take.

[0026] like Figure 4As shown: the locking mechanism includes a handwheel handle 15 inserted in the front side wall of the concave shell 3 and rotatably connected thereto, one end of the handwheel handle 15 extends into the concave shell 3 and is fixedly connected to a driving bevel gear 16, two symmetrically arranged support plates 17 are fixedly connected to the inner wall of the lateral end of the concave shell 3, a bidirectional screw rod 18 is rotatably connected between the two support plates 17 through a bearing seat, a driven bevel gear 19 meshingly connected to the driving bevel gear 16 is fixedly connected to the bidirectional screw rod 18, two symmetrically arranged threaded blocks 20 are threadedly connected to the bidirectional screw rod 18, and two symmetrically arranged push rods 21 are fixedly connected to the far side of the two threaded blocks 20, and the two push rods 21 both penetrate the support plate 17 and are fixedly connected to the lock. Block 22, one side of the locking block 22 is meshed and connected with the circular gear 6. When it is necessary to push the placement plate 9, turn the handwheel handle 15. Since the active bevel gear 16 is meshed with the driven bevel gear 19, the bidirectional screw rod 18 is driven to rotate. Since the bidirectional screw rod 18 is threadedly connected with the two threaded blocks 20 respectively, at this time, the two threaded blocks 20 are forced to move toward each other, thereby driving the locking block 22 fixed to the push rod 21 to move until it is separated from the circular gear 6. At this time, the rotation of the circular gear 6 is unrestricted, so that the movable rack 4 can be displaced, and then the placement plate 9 can be pushed to move. On the contrary, when the locking block 22 is meshed with the circular gear 6, the placement plate 9 can be prevented from being displaced, making the bacterial culture tank 2 more stable, simple to operate, and securely locked.

[0027] like Figure 4 As shown, a front side wall of the concave shell 3 is provided with an avoidance groove 23, and the hand wheel handle 15 is located in the avoidance groove 23 to prevent the hand wheel handle 15 from being accidentally touched.

[0028] like Figure 4 As shown, two through holes are provided on the side wall of the support plate 17 , and two push rods 21 are respectively arranged through the two through holes to facilitate the displacement of the push rods 21 .

[0029] like Figure 5 As shown: the elastic mechanism includes two compression springs 24 fixed to the inner bottom wall of the mounting groove 10, and the upper ends of the two compression springs 24 are fixedly connected with a lifting plate 25. The inner wall of the mounting groove 10 is slidably connected to the outer side wall of the lifting plate 25, and the lifting plate 25 is tightly arranged against the mounting block 11. Since the mounting block 11 on the bacterial culture tank 2 squeezes the lifting plate 25, the compression spring 24 is squeezed and contracted to generate elastic force, thereby lifting the mounting block 11, so that the clamping block 12 is clamped in the clamping groove 14, and the installation and fixation of the bacterial culture tank 2 is achieved. Secondly, when the clamping block 12 rotates to the positioning slide groove 13, the elastic force of the compression spring 24 can be used to push the lifting plate 25 to lift the bacterial culture tank 2, so as to remove the bacterial culture tank 2 from the mounting groove 10, which makes the installation and disassembly of the bacterial culture tank 2 more convenient, and the structural design is simple and ingenious.

[0030] like Figure 4As shown: one end of the movable rack 4 is fixedly connected to a guide slider 26, and the radial end inner wall of the concave shell 3 is slidably connected to the outer wall of the guide slider 26, so that the displacement of the movable rack 4 is more stable.

[0031] like Figure 1 As shown: wear-resistant strips 27 are fixedly connected to the corners on both sides of the bottom of the storage cabinet 1 to prevent the bottom of the storage cabinet 1 from being rubbed.

[0032] like Figure 2 As shown: a handle 28 is fixedly connected to the front side wall of the placement plate 9, which is convenient for pulling the placement plate 9 to move.

[0033] like Figure 6 As shown: the clamping mechanism includes a concave cover shell 30 connected to the upper side of the storage cabinet 1, a handle rod 31 is inserted and rotatably connected to one side of the concave cover shell 30, the handle rod 31 extends into the concave cover shell 30 and is fixedly connected to two first bevel gears 32, the two vertical end inner walls of the concave cover shell 30 are rotatably connected to two vertically symmetrically arranged threaded rods 33, the upper end of the threaded rod 33 is fixedly connected to a second bevel gear 34 meshing with the first bevel gear 32, the two threaded rods 33 are both threadedly connected to a nut block 35, one side of the nut block 35 is fixedly connected to a connecting rod 36, and the two connecting rods 36 extend into the storage cabinet 1 and are fixedly connected to a pressure plate 37, the lower side wall of the pressing plate 37 is provided with a groove 38 corresponding to the bacterial culture tank 2. When carrying the device, the handle 31 can be rotated. Since the two first bevel gears 32 are respectively engaged with the two second bevel gears 34, the two threaded rods 33 are driven to rotate. Since the threaded rods 33 are threadedly connected with the nut blocks 35, at this time, the two nut blocks 35 are forced to move downward synchronously, thereby driving the pressing plate 37 fixed with the connecting rod 36 to move downward until the groove 38 is pressed against the lid of the bacterial culture tank 2. The pressing plate 37 can be pressed against the bacterial culture tank 2 for further fixation, and at the same time, the lid of the bacterial culture tank 2 is prevented from being opened to cause leakage of bacteria.

[0034] Working principle: In this device, when it is necessary to take the bacterial culture tank 2, first, turn the hand wheel 15. Since the active bevel gear 16 is meshed with the driven bevel gear 19, the bidirectional screw 18 is driven to rotate. Since the bidirectional screw 18 is threadedly connected with the two threaded blocks 20 respectively, at this time, the two threaded blocks 20 are forced to move toward each other, thereby driving the lock block 22 fixed to the push rod 21 to move until it is separated from the circular gear 6. At this time, the rotation of the circular gear 6 is unrestricted, so that the movable rack 4 can be displaced, and then the placement plate 9 can be pulled out of the storage cabinet 1, so as to facilitate the taking of the bacterial culture tank 2. Secondly, rotate the bacterial culture tank 2 to move the card block 12 from the card slot 14 When the bacteria culture tank 2 is fixed, the block 12 is aligned with the positioning slot 13, and then the mounting block 11 is inserted into the mounting slot 10. At this time, the mounting block 11 moves down to squeeze the lifting plate 25. At this time, the compression spring 24 is squeezed and contracted to generate elastic force until the mounting block 11 is moved down to the slot 14. The bacteria culture tank 2 is rotated to make the block 12 snap into the slot 14. At this time, the elastic force of the compression spring 24 can be used to push the block 12 tightly against the slot 14, so as to achieve the installation and fixation of the bacteria culture tank 2. The operation is simple and the fixation is reliable.

[0035] When carrying the device, the handle 31 can be rotated. Since the two first bevel gears 32 are respectively meshed with the two second bevel gears 34, the two threaded rods 33 are driven to rotate. Since the threaded rods 33 are threadedly connected with the nut blocks 35, the two nut blocks 35 are forced to move downward synchronously at this time, thereby driving the pressing plate 37 fixed to the connecting rod 36 to move downward until the groove 38 is tightly pressed against the lid of the bacterial culture tank 2. The pressing plate 37 can be pressed against the bacterial culture tank 2 for further fixation, and at the same time, the lid of the bacterial culture tank 2 is prevented from being opened to cause leakage of bacteria.

[0036] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An immune bacteria culture device that is easy to take, comprising a storage cabinet (1) and a bacteria culture tank (2), characterized in that: The inner bottom wall of the storage cabinet (1) is fixedly connected to a concave shell (3), and two symmetrically arranged moving racks (4) are slidably connected in two radial ends of the concave shell (3). The front side wall of the transverse end of the concave shell (3) is provided with two sliding holes (29) respectively arranged corresponding to the two moving racks (4). The inner walls of the transverse ends of the concave shell (3) are rotatably connected to circular gears (6) meshing with the moving racks (4) through rotating shafts (5). The inner walls of the transverse ends of the concave shell (3) are provided with locking mechanisms for locking the rotation of the two circular gears (6). The upper side walls of the two moving racks (4) are fixedly connected to L-shaped frames (7). The upper side walls of the two radial ends of the concave shell (3) are provided with sliding openings (8). The two L-shaped frames (7) are fixedly connected to the upper side walls of the two moving racks (4). ) pass through two sliding openings (8) respectively and are fixedly connected with a placement plate (9), the upper side wall of the placement plate (9) is evenly provided with installation grooves (10), the lower end of the bacterial culture tank (2) is fixedly connected with a mounting block (11), the mounting block (11) is inserted into the mounting groove (10), the inner bottom wall of the mounting groove (10) is provided with an elastic mechanism, one side of the mounting block (11) is fixedly connected with a clamping block (12), the inner side wall of the mounting groove (10) is provided with a positioning sliding groove (13) corresponding to the clamping block (12), the inner wall of the mounting groove (10) is provided with a clamping groove (14) connected with the lower end of the positioning sliding groove (13), the clamping block (12) is clamped in the clamping groove (14), and the upper part of the inner wall of the storage cabinet (1) is provided with a clamping mechanism.

2. The easy-to-take immune bacteria culture device according to claim 1, characterized in that: The locking mechanism comprises a hand wheel handle (15) inserted into the front side wall of the concave shell (3) and rotatably connected thereto, one end of the hand wheel handle (15) extends into the concave shell (3) and is fixedly connected to a driving bevel gear (16), two symmetrically arranged support plates (17) are fixedly connected to the inner wall of the transverse end of the concave shell (3), a bidirectional screw rod (18) is rotatably connected between the two support plates (17) through a bearing seat, the bidirectional screw rod (18) is fixedly connected to a driven bevel gear (19) meshingly connected to the driving bevel gear (16), two symmetrically arranged threaded blocks (20) are threadedly connected to the bidirectional screw rod (18), and two symmetrically arranged push rods (21) are fixedly connected to the far sides of the two threaded blocks (20), the two push rods (21) both penetrate the support plate (17) and are fixedly connected to a locking block (22), and one side of the locking block (22) is meshingly connected to the circular gear (6).

3. The easy-to-take immune bacteria culture device according to claim 2, characterized in that: The front side wall of the concave shell (3) is provided with an escape groove (23), and the hand wheel handle (15) is located in the escape groove (23).

4. The easy-to-take immune bacteria culture device according to claim 2, characterized in that: The side wall of the support plate (17) is provided with two through holes, and the two push rods (21) are respectively arranged through the two through holes.

5. The easy-to-take immune bacteria culture device according to claim 1, characterized in that: The elastic mechanism comprises two compression springs (24) fixed to the inner bottom wall of the mounting groove (10), the upper ends of the two compression springs (24) are fixedly connected with a lifting plate (25), the inner wall of the mounting groove (10) is slidably connected to the outer wall of the lifting plate (25), and the lifting plate (25) is tightly arranged against the mounting block (11).

6. The easy-to-take immune bacteria culture device according to claim 1, characterized in that: One end of the movable rack (4) is fixedly connected to a guide slider (26), and the radial end inner wall of the concave shell (3) is slidably connected to the outer side wall of the guide slider (26).

7. The easy-to-take immune bacteria culture device according to claim 1, characterized in that: Wear-resistant strips (27) are fixedly connected to the corners on both sides of the bottom of the storage cabinet (1).

8. The easy-to-take immune bacteria culture device according to claim 1, characterized in that: A handle (28) is fixedly connected to the front side wall of the placement plate (9).

9. The easy-to-take immune bacteria culture device according to claim 1, characterized in that: The clamping mechanism comprises a concave cover shell (30) connected to the upper side of the storage cabinet (1), a handle rod (31) is inserted and rotatably connected to one side of the concave cover shell (30), the handle rod (31) extends into the concave cover shell (30) and is fixedly connected to two first bevel gears (32), two vertical end inner walls of the concave cover shell (30) are rotatably connected to two vertically symmetrically arranged threaded rods (33), the upper ends of the threaded rods (33) are fixedly connected to second bevel gears (34) meshingly connected to the first bevel gears (32), the two threaded rods (33) are threadedly connected to nut blocks (35), one side of the nut blocks (35) is fixedly connected to a connecting rod (36), the two connecting rods (36) extend into the storage cabinet (1) and are fixedly connected to a pressing plate (37), and the lower side wall of the pressing plate (37) is provided with a groove (38) corresponding to the bacterial culture tank (2).

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