Microflora culture device for food detection

Abstract

The utility model discloses a flora culture device for food detection, which relates to the technical field of food detection equipment and comprises a box body, a connecting component, a fixing component and a piston component. When flora needs to be cultured, the culture dishes can be fixed in the box body through the fixing parts, and the fixing parts are arranged on one side of the box body, so that the culture dishes are stored in a suspension manner, the space of the box body can be greatly saved, and the box body can accommodate more culture dishes for simultaneous culture; the culture efficiency is improved. The culture dish is connected with the box body through the connecting part, and the angle of the culture dish can be properly adjusted through the work of the connecting part, so that the efficiency of culturing the flora is improved. After the culture dish is fixed, the box door can be closed through the handle, and then the motor and the water pump are started to adjust the temperature in the box body, so that the temperature in the box body is proper, and the working efficiency of the device and the success rate of flora culture are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food detection equipment, in particular to a bacterial flora cultivation device for food detection. Background Art

[0002] In the process of food testing, especially for health foods such as soybean peptide protein powder and bovine colostrum, strict food testing is required. Among them, the detection of microorganisms in food testing is very important.

[0003] The mold culture device of the prior art is generally provided with a multi-layer tray. When in use, the culture and the nutrient solution are placed in a culture dish, and then the culture dish is placed on the tray and placed in the mold culture device for culture. The culture will produce waste liquid during the culture process. After the waste liquid is mixed with the culture solution and moisture and accumulates, it is easy to overflow from the culture dish to the tray, which can easily cause the overflowed waste liquid to flow from the tray to the inside of the mold culture device, thereby contaminating the culture device, which is not conducive to cleaning the culture device.

[0004] In the prior art, a Chinese patent with publication number CN220284036U is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: a mold culture device for food detection, including a culture box, a culture chamber is arranged in the culture box, and a multi-layer tray is arranged in the culture chamber. A liquid collecting frame is installed under each layer of the tray, and adjacent liquid collecting frames are connected by connecting pipes; a plurality of concave storage grooves are arranged on the tray, and the bottom of the storage grooves is penetrated by leakage holes; a liquid collecting groove is arranged on the side of the liquid collecting frame facing the tray, and the leakage hole is connected to the connecting pipe through the liquid collecting groove. Through the above structure, the utility model can put the culture dish into the storage tank when cultivating mold. When the culture dish overflows with waste liquid, it can leak into the liquid collecting tank through the leakage hole, and the waste liquid in each layer of the liquid collecting tank can be discharged through the action of the connecting pipe, so as to avoid the overflowed waste liquid from flowing onto the tray to ensure the cleanliness of the culture cavity and prevent the culture cavity from being contaminated. However, the placement of the culture dish in the device will lead to reduced work efficiency, and the angle of the culture dish cannot be adjusted, and the temperature of the device cannot be adjusted. Summary of the invention

[0005] The purpose of the utility model is to provide a bacterial flora culture device for food detection to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A bacterial flora culture device for food testing comprises a box body, a motor is fixedly connected to one side of the box body, a water tank is fixedly connected to the side of the box body close to the motor, a box door is provided on the side of the box body away from the motor, the box door is rotatably connected to the box body, a handle is fixedly connected to the box door, an exhaust port is provided on the box body, a one-way valve component is connected to the exhaust port, a plurality of culture dishes are evenly arranged in the box body, a connecting component for connecting to the box body is provided at one end of the culture dish, a piston component for changing the temperature in the box body is provided in the box body, a plurality of grooves are provided in the box body, and fixing components for fixing the culture dishes are provided in the grooves.

[0008] When it is necessary to cultivate the bacterial colony, the culture dish can be fixed inside the box by a fixing component. Because the fixing component is arranged on one side of the box, the culture dish is stored in a hanging type, which can greatly save the space in the box, so that the box can accommodate more culture dishes for cultivation at the same time, thereby improving the cultivation efficiency. Because the culture dish is connected to the box by a connecting component, the angle of the culture dish can also be properly adjusted by the work of the connecting component, so that the efficiency of cultivating the bacterial colony is improved. After the culture dish is fixed, the box door can be closed by a handle, and then the motor and the water pump are started to adjust the temperature inside the box so that the temperature inside the box reaches a suitable temperature, thereby improving the working efficiency of the device and the success rate of bacterial colony cultivation.

[0009] A further improvement of the technical solution of the utility model is that: the connecting component includes a shaft body, a driving gear is fixedly connected to the shaft body, a driven gear is symmetrically arranged on the outer side of the driving gear, the driven gear is meshed with the driving gear, a gear ring is arranged on the outer side of the driving gear, the gear ring is meshed with the driven gear, the gear ring is fixedly connected to the culture dish, one end of the shaft body is fixedly connected to a support shaft, the support shaft is rotatably connected to the culture dish, a stopper is fixedly connected to the end of the support shaft away from the shaft body, a card interface is symmetrically provided on the stopper, and the stopper is slidably connected to the groove.

[0010] The above technical solution is adopted. In this solution, when the culture dish is fixed on the box, the culture dish is twisted, and the culture dish will drive the gear ring fixedly connected to it to rotate. At this time, the driving gear fixedly connected to the shaft body is fixed, and the rotation of the gear ring will drive the driven gear meshing with it to revolve and rotate respectively, thereby achieving the purpose of being able to adjust the angle of the culture dish. This structure is used because it has the advantages of compact structure, stable power transmission function and good bearing capacity, which can greatly improve the culture efficiency of the culture dish.

[0011] A further improvement of the technical solution of the utility model is that: the piston component includes a cylinder body, a water pipe is symmetrically fixedly connected to the bottom of the cylinder body, both ends of the water pipe are connected to the water tank respectively, an air inlet and an air outlet are respectively opened in the cylinder body, and a one-way valve component is arranged at the air inlet and the air outlet, a piston plate is slidingly connected in the cylinder body, an elastic spring is arranged between the bottom of the cylinder body and the piston plate, one end of the elastic spring is fixedly connected to the cylinder body, and the other end of the elastic spring is fixedly connected to the piston plate, a connecting rod is rotatably connected to the piston plate, a disc is fixedly connected to the output end of the motor, a support rod is fixedly connected to the disc, and the connecting rod is rotatably connected to the support rod.

[0012] The above technical solution is adopted. In this solution, when it is necessary to adjust the temperature inside the box, the motor is turned on at this time. The rotation of the motor will drive the disc fixedly connected to its output end to rotate. The rotation of the disc will drive the connecting rod to move through the support rod. Because the other end of the connecting rod is rotatably connected to the piston plate, the movement of the connecting rod will drive the piston plate to perform piston work in the cylinder. When the piston plate is working, a pressure difference will be generated inside and outside the cylinder. The pressure difference can open the one-way valve component to allow air to flow in from the air inlet of the cylinder. At the same time, water with a suitable temperature needs to be added to the water tank, and then the water tank will supply water to the water pipe in the cylinder. When the water flows into the water pipe, it will transfer heat to the surface of the water pipe. At this time, the air in the cylinder will carry the heat on the surface of the water pipe under the action of the piston plate and discharge it from the air outlet of the cylinder to the inside of the box through the one-way valve component, so as to adjust the temperature inside the box. When there is too much gas inside the box, the one-way valve component at the exhaust port of the box will open to allow the gas to flow out. When the suitable temperature is reached, the motor stops working, thereby achieving the purpose of adjusting the temperature inside the box through piston movement.

[0013] A further improvement of the technical solution of the utility model is that the fixed component includes a shell, a push block is slidably connected inside the shell, a return spring is arranged between the push block and the shell, one end of the return spring is fixedly connected to the shell, the other end of the return spring is fixedly connected to the push block, and a plurality of protrusions are arranged on the end of the push block that contacts the card interface.

[0014] The above technical solution is adopted. In this solution, when the culture dish needs to be fixed, the block is pushed into the groove. At this time, the reset spring is in an extended state, and the push block is extended to the outside of the shell. When the block contacts the inclined surface on one side of the push block, the block will continue to apply pressure to the push block, causing the reset spring to be compressed and the push block to retract into the shell. When the card interface appears, since there is no pressure applied, the reset spring gradually bounces open, causing the push block to conflict with the card interface, thereby achieving the purpose of fixing the culture dish. A number of protrusions are provided on one side of the push block to increase the friction between the card interface, so that the friction between them is increased, and the fixing effect of the culture dish is improved.

[0015] A further improvement of the technical solution of the utility model is that the one-way valve component includes a box body, which is respectively provided with an input port and an output port, a through hole is provided in the box body, a baffle is provided in the box body, a compression spring is provided at one end of the baffle, one end of the compression spring is fixedly connected to the output port, the other end of the compression spring is fixedly connected to the baffle, and the baffle is in conflict with the through hole.

[0016] The above technical solution is adopted. In this solution, when the pressure at one end of the box input port is greater than the pressure at one end of the output port, the pressure difference will compress the compression spring, thereby driving the baffle to move. At this time, the through hole is no longer blocked by the baffle, and air can flow freely. When the pressure difference disappears, the compression spring and the baffle will return to their original state, the through hole will be blocked by the baffle again, and the air flow will be hindered, thereby achieving the effect of one-way gas circulation.

[0017] A further improvement of the technical solution of the utility model is that: the limiting teeth are symmetrically arranged on the gear ring, and the limiting teeth are arranged perpendicular to the driven gear.

[0018] The above technical solution is adopted, in which a limit tooth is fixedly connected to the gear ring to limit the rotation angle of the culture dish to prevent the culture dish from being overturned or causing the culture efficiency to be reduced due to the rotation angle being too large. The limit tooth is set perpendicular to the driven gear because when the culture dish is rotated to the maximum rotation angle, the driven gear just conflicts with the limit tooth on the gear ring. This setting can prevent accidents caused by excessive rotation angle of the culture dish.

[0019] A further improvement of the technical solution of the utility model is that a sealing ring is arranged on the side of the piston plate away from the connecting rod, and the sealing ring is fixedly connected to the piston plate.

[0020] The above-mentioned technical solution is adopted, in which a sealing ring is fixedly connected to the bottom of the piston plate. The sealing ring uses the elasticity and self-adhesion of its material to closely contact the piston plate, which can prevent gas leakage during the operation of the piston plate, thereby ensuring the normal operation of the piston components and improving the stability of the device operation.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a bacterial culture device for food testing, which utilizes a planetary gear structure because it has the advantages of compact structure, stable power transmission function and good bearing capacity, thereby greatly improving the culture efficiency of the culture dish.

[0023] 2. The utility model provides a bacterial culture device for food testing. A limit tooth is fixedly connected to the gear ring to limit the rotation angle of the culture dish to prevent the culture efficiency of the culture dish from being reduced or turning over due to excessive rotation angle. The limit tooth is arranged vertically to the driven gear because when the culture dish is rotated to the maximum rotation angle, the driven gear just conflicts with the limit tooth on the gear ring, thereby preventing accidents caused by excessive rotation angle of the culture dish.

[0024] 3. The utility model provides a bacterial culture device for food testing, in which a sealing ring is fixedly connected under the piston plate. The sealing ring is in close contact with the piston plate by utilizing the elasticity and self-adhesion of its material, thereby preventing gas leakage during the operation of the piston plate, thereby enabling the piston component to operate normally and improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 This is a front view structural schematic diagram of the utility model;

[0027] Figure 2 It is a right view structural schematic diagram of the utility model;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the connecting component of the utility model;

[0030] Figure 5 It is a partial structural schematic diagram of the utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the fixing component of the utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the one-way valve component of the utility model.

[0033] In the figure: 1. box body; 2. motor; 3. box door; 4. water tank; 5. handle; 6. culture dish; 7. groove; 8. shaft; 9. driving gear; 10. driven gear; 11. gear ring; 12. support shaft; 13. block; 14. card interface; 15. cylinder body; 16. water pipe; 17. air inlet; 18. air outlet; 19. piston plate; 20. elastic spring; 21. connecting rod; 22. disc; 23. support rod; 24. shell; 25. push block; 26. reset spring; 27. input port; 28. output port; 29. ​​through hole; 30. block; 31. box body; 32. compression spring; 33. limit tooth; 34. sealing ring. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the embodiments:

[0035] Example 1

[0036] like Figure 1 As shown, the utility model provides a bacterial flora culture device for food detection, including a box body 1, a motor 2 is fixedly connected to one side of the box body 1, a water tank 4 is fixedly connected to the side of the box body 1 close to the motor 2, a box door 3 is provided on the side of the box body 1 away from the motor 2, the box door 3 is rotatably connected to the box body 1, a handle 5 is fixedly connected to the box door 3, an exhaust port is provided on the box body 1, a one-way valve component is connected to the exhaust port, a plurality of culture dishes 6 are evenly arranged in the box body 1, a connecting component for connecting to the box body 1 is provided at one end of the culture dishes 6, a piston component for changing the temperature in the box body 1 is provided in the box body 1, a plurality of grooves 7 are provided in the box body 1, and a fixing component for fixing the culture dishes 6 is provided in the grooves 7.

[0037] In this embodiment, when it is necessary to cultivate the bacterial colony, the culture dish 6 can be fixed inside the housing 1 by a fixing component. Because the fixing component is arranged on one side of the housing 1, the culture dish 6 is suspended when stored, which can greatly save the space inside the housing 1, so that the housing 1 can accommodate more culture dishes 6 for cultivation at the same time, thereby improving the cultivation efficiency. Because the culture dish 6 is connected to the housing 1 by a connecting component, the angle of the culture dish 6 can also be properly adjusted by the work of the connecting component, so that the efficiency of cultivating the bacterial colony is improved. After the culture dish 6 is fixed, the door 3 can be closed by the handle 5, and then the motor 2 and the water pump are started to adjust the temperature inside the housing 1 so that the temperature inside the housing 1 reaches a suitable temperature, thereby improving the working efficiency of the device and the success rate of bacterial colony cultivation.

[0038] like Figure 5 As shown, in the present embodiment, preferably, the connecting component includes a shaft body 8, a driving gear 9 is fixedly connected to the shaft body 8, a driven gear 10 is symmetrically arranged on the outer side of the driving gear 9, the driven gear 10 is meshed with the driving gear 9, a ring gear 11 is arranged on the outer side of the driving gear 9, the ring gear 11 is meshed with the driven gear 10, the ring gear 11 is fixedly connected to the culture dish 6, a support shaft 12 is fixedly connected to one end of the shaft body 8, the support shaft 12 is rotatably connected to the culture dish 6, a stopper 13 is fixedly connected to the end of the support shaft 12 away from the shaft body 8, a card interface 14 is symmetrically provided on the stopper 13, and the stopper 13 is slidably connected to the groove 7.

[0039] When the culture dish 6 is fixed on the box 1, the culture dish 6 is twisted, and the culture dish 6 drives the gear ring 11 fixedly connected thereto to rotate. At this time, the driving gear 9 fixedly connected to the shaft body 8 is fixed, and the rotation of the gear ring 11 drives the driven gear 10 meshing therewith to revolve and rotate respectively, thereby achieving the purpose of being able to adjust the angle of the culture dish 6. This structure is used because it has the advantages of compact structure, stable power transmission function and good bearing capacity, which can greatly improve the culture efficiency of the culture dish 6.

[0040] like Figure 3 As shown, preferably, the piston component includes a cylinder body 15, a water pipe 16 is symmetrically fixedly connected to the bottom of the cylinder body 15, both ends of the water pipe 16 are respectively connected to the water tank 4, an air inlet 17 and an air outlet 18 are respectively opened in the cylinder body 15, and a one-way valve component is provided at the air inlet 17 and the air outlet 18, a piston plate 19 is slidably connected in the cylinder body 15, an elastic spring 20 is provided between the bottom of the cylinder body 15 and the piston plate 19, one end of the elastic spring 20 is fixedly connected to the cylinder body 15, and the other end of the elastic spring 20 is fixedly connected to the piston plate 19, a connecting rod 21 is rotatably connected to the piston plate 19, a disc 22 is fixedly connected to the output end of the motor 2, a support rod 23 is fixedly connected to the disc 22, and the connecting rod 21 is rotatably connected to the support rod 23.

[0041] When the temperature inside the box body 1 needs to be adjusted, the motor 2 is turned on at this time. The rotation of the motor 2 will drive the disk 22 fixedly connected to its output end to rotate. The rotation of the disk 22 will drive the connecting rod 21 to move through the support rod 23. Because the other end of the connecting rod 21 is rotatably connected to the piston plate 19, the movement of the connecting rod 21 will drive the piston plate 19 to perform piston work in the cylinder body 15. When the piston plate 19 is working, a pressure difference will be generated inside and outside the cylinder body 15. The pressure difference can open the one-way valve component to allow air to flow in from the air inlet 17 of the cylinder body 15. At the same time, it is necessary to add a suitable temperature into the water tank 4. , and then the water tank 4 will supply water to the water pipe 16 in the cylinder body 15. When the water flows into the water pipe 16, the heat will be transferred to the surface of the water pipe 16. At this time, the air in the cylinder body 15, under the action of the piston plate 19, carries the heat on the surface of the water pipe 16 and is discharged from the air outlet 18 of the cylinder body 15 to the inside of the box body 1 through the one-way valve component, so as to adjust the temperature inside the box body 1. When there is too much gas inside the box body 1, the one-way valve component at the exhaust port of the box body 1 will open to let the gas flow out. When the suitable temperature is reached, the motor 2 stops working, thereby achieving the purpose of adjusting the temperature inside the box body 1 through the movement of the piston.

[0042] like Figure 6As shown, preferably, the fixed component includes a shell 24, a push block 25 is slidably connected inside the shell 24, a return spring 26 is arranged between the push block 25 and the shell 24, one end of the return spring 26 is fixedly connected to the shell 24, the other end of the return spring 26 is fixedly connected to the push block 25, and a plurality of protrusions are arranged on the end of the push block 25 that contacts the card interface 14.

[0043] When it is necessary to fix the culture dish 6, the stopper 13 is pushed into the groove 7. At this time, the return spring 26 is in an extended state, and the push block 25 is extended to the outside of the shell 24. When the stopper 13 contacts the inclined surface on one side of the push block 25, the stopper 13 will continue to apply pressure to the push block 25, causing the return spring 26 to be compressed, and the push block 25 is retracted into the shell 24. When the card interface 14 appears, due to the lack of pressure, the return spring 26 gradually pops open, causing the push block 25 to conflict with the card interface 14, thereby achieving the purpose of fixing the culture dish 6. A number of protrusions are provided on one side of the push block 25 to increase the friction between the card interface 14, so that the friction between them is increased, thereby improving the fixing effect of the culture dish 6.

[0044] like Figure 7 As shown, preferably, the one-way valve component includes a box body 31, which is respectively provided with an input port 27 and an output port 28, a through hole 29 is provided in the box body 31, a baffle 30 is provided in the box body 31, a compression spring 32 is provided at one end of the baffle 30, one end of the compression spring 32 is fixedly connected to the output port 28, and the other end of the compression spring 32 is fixedly connected to the baffle 30, and the baffle 30 is in conflict with the through hole 29.

[0045] When the pressure at one end of the input port 27 of the box body 31 is greater than the pressure at one end of the output port 28, the pressure difference will compress the compression spring 32, thereby driving the baffle 30 to move. At this time, the through hole 29 is no longer blocked by the baffle 30, and air can flow freely. When the pressure difference disappears, the compression spring 32 and the baffle 30 will return to their original state, and the through hole 29 will be blocked by the baffle 30 again, and the air flow will be hindered, thereby achieving the effect of one-way gas circulation.

[0046] Example 2

[0047] like Figure 5 As shown, based on Example 1, the utility model provides a technical solution: preferably, the limiting teeth 33 are symmetrically arranged on the ring gear 11, and the limiting teeth 33 are arranged perpendicular to the driven gear 10.

[0048] In this embodiment, the limiting teeth 33 are fixedly connected to the gear ring 11 in order to limit the rotation angle of the culture dish 6 to prevent the culture dish 6 from being overturned or reduced in culture efficiency due to excessive rotation angle. The limiting teeth 33 are arranged perpendicular to the driven gear 10 because when the culture dish 6 is rotated to the maximum rotation angle, the driven gear 10 just conflicts with the limiting teeth 33 on the gear ring 11. This arrangement can prevent accidents caused by excessive rotation angle of the culture dish 6.

[0049] Example 3

[0050] like Figure 3 As shown, based on Example 2, the utility model provides a technical solution: preferably, a sealing ring 34 is provided on the side of the piston plate 19 away from the connecting rod 21, and the sealing ring 34 is fixedly connected to the piston plate 19.

[0051] In this embodiment, a sealing ring 34 is fixedly connected to the bottom of the piston plate 19. The sealing ring 34 is in close contact with the piston plate 19 by utilizing the elasticity and self-adhesion of its material, which can prevent gas leakage during the operation of the piston plate 19, thereby ensuring the normal operation of the piston components and improving the stability of the device operation.

[0052] The working principle of the bacterial flora culture device for food testing will be described in detail below.

[0053] like Figure 1-7As shown, when it is necessary to cultivate the bacterial colony, the culture dish 6 can be fixed inside the housing 1 by a fixing component. Because the fixing component is arranged on one side of the housing 1, the culture dish 6 is suspended when stored, which can greatly save the space in the housing 1, so that the housing 1 can accommodate more culture dishes 6 for cultivation at the same time, thereby improving the cultivation efficiency. Because the culture dish 6 is connected to the housing 1 by a connecting component, the angle of the culture dish 6 can also be properly adjusted by the work of the connecting component, so that the efficiency of cultivating the bacterial colony is improved. After the culture dish 6 is fixed, the door 3 can be closed by the handle 5, and then the motor 2 and the water pump are started to adjust the temperature inside the housing 1 so that the temperature inside the housing 1 reaches a suitable temperature, thereby improving the working efficiency of the device and the success rate of bacterial colony cultivation. When the culture dish 6 is fixed on the housing 1, the culture dish 6 is twisted, and the culture dish 6 will drive the gear ring 11 fixedly connected thereto to rotate. At this time, the driving gear 9 fixedly connected to the shaft body 8 is fixed, and the rotation of the gear ring 11 will drive the driven gear 10 meshed therewith to revolve and rotate respectively, thereby achieving the purpose of being able to adjust the angle of the culture dish 6. This structure is used because it has the advantages of compact structure, stable power transmission function and good bearing capacity, which can greatly improve the culture efficiency of the culture dish 6. When the culture dish 6 needs to be fixed, the block 13 is pushed into the groove 7, at which time the reset spring 26 is in an extended state, and the push block 25 is extended to the outside of the shell 24. When the block 13 contacts the inclined surface on one side of the push block 25, the block 13 will continue to apply pressure to the push block 25, causing the reset spring 26 to be compressed, and the push block 25 is retracted into the shell 24. When the card interface 14 appears, due to the lack of pressure, the reset spring 26 gradually pops open, causing the push block 25 to conflict with the card interface 14, thereby achieving the purpose of fixing the culture dish 6. A number of protrusions are provided on one side of the push block 25 to increase the friction between the card interface 14, so that the friction between them is increased, and the fixing effect of the culture dish 6 is improved.When the temperature inside the box body 1 needs to be adjusted, the motor 2 is turned on at this time. The rotation of the motor 2 will drive the disk 22 fixedly connected to its output end to rotate. The rotation of the disk 22 will drive the connecting rod 21 to move through the support rod 23. Because the other end of the connecting rod 21 is rotatably connected to the piston plate 19, the movement of the connecting rod 21 will drive the piston plate 19 to perform piston work in the cylinder body 15. When the piston plate 19 is working, a pressure difference will be generated inside and outside the cylinder body 15. The pressure difference can open the one-way valve component to allow air to flow in from the air inlet 17 of the cylinder body 15. At the same time, it is necessary to add a suitable temperature into the water tank 4. , and then the water tank 4 will supply water to the water pipe 16 in the cylinder body 15. When the water flows into the water pipe 16, the heat will be transferred to the surface of the water pipe 16. At this time, the air in the cylinder body 15, under the action of the piston plate 19, carries the heat on the surface of the water pipe 16 and is discharged from the air outlet 18 of the cylinder body 15 to the inside of the box body 1 through the one-way valve component, so as to adjust the temperature inside the box body 1. When there is too much gas inside the box body 1, the one-way valve component at the exhaust port of the box body 1 will open to let the gas flow out. When the suitable temperature is reached, the motor 2 stops working, thereby achieving the purpose of adjusting the temperature inside the box body 1 through the movement of the piston. When the pressure at one end of the input port 27 of the box body 31 is greater than the pressure at one end of the output port 28, the pressure difference will cause the compression spring 32 to compress, thereby driving the baffle 30 to move. At this time, the through hole 29 is no longer blocked by the baffle 30, and the air can flow freely. When the pressure difference disappears, the compression spring 32 and the baffle 30 will return to their original state, and the through hole 29 will be blocked by the baffle 30 again, and the air flow will be hindered, thereby achieving the effect of one-way gas flow. The limit teeth 33 are fixedly connected to the ring gear 11 to limit the rotation angle of the culture dish 6 to prevent the culture efficiency of the culture dish 6 from being reduced or flipped due to excessive rotation angle. The limit teeth 33 are set vertically with the driven gear 10 because when the culture dish 6 rotates to the maximum rotation angle, the driven gear 10 just conflicts with the limit teeth 33 on the ring gear 11. This setting can prevent accidents caused by excessive rotation angle of the culture dish 6. A sealing ring 34 is fixedly connected below the piston plate 19. The sealing ring 34 is in close contact with the piston plate 19 due to the elasticity and self-adhesion of its material, which can prevent gas leakage during the operation of the piston plate 19 to ensure the normal operation of the piston components and improve the stability of the device operation.

[0054] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A bacterial flora culture device for food testing, comprising a housing (1); characterized in that: A motor (2) is fixedly connected to one side of the box (1), a water tank (4) is fixedly connected to the side of the box (1) close to the motor (2), a box door (3) is provided on the side of the box (1) away from the motor (2), the box door (3) is rotatably connected to the box (1), a handle (5) is fixedly connected to the box door (3), an exhaust port is provided on the box (1), a one-way valve component is connected to the exhaust port, a plurality of culture dishes (6) are evenly arranged in the box (1), a connecting component for connecting to the box (1) is provided at one end of the culture dishes (6), a piston component for changing the temperature in the box (1) is provided in the box (1), a plurality of grooves (7) are provided in the box (1), and a fixing component for fixing the culture dishes (6) is provided in the grooves (7).

2. A bacterial colony culture device for food detection according to claim 1, characterized in that: The connecting component comprises a shaft (8), a driving gear (9) is fixedly connected to the shaft (8), a driven gear (10) is symmetrically arranged on the outer side of the driving gear (9), the driven gear (10) is meshed with the driving gear (9), a gear ring (11) is arranged on the outer side of the driving gear (9), the gear ring (11) is meshed with the driven gear (10), the gear ring (11) is fixedly connected to the culture dish (6), a support shaft (12) is fixedly connected to one end of the shaft (8), the support shaft (12) is rotatably connected to the culture dish (6), a stopper (13) is fixedly connected to one end of the support shaft (12) away from the shaft (8), a card interface (14) is symmetrically provided on the stopper (13), and the stopper (13) is slidably connected to the groove (7).

3. A bacterial colony culture device for food detection according to claim 2, characterized in that: The piston component comprises a cylinder body (15), the bottom of the cylinder body (15) is fixedly connected to a water pipe (16) symmetrically arranged, the two ends of the water pipe (16) are respectively connected to the water tank (4), the cylinder body (15) is provided with an air inlet (17) and an air outlet (18), both of which are provided with a one-way valve component, the cylinder body (15) is provided with a piston plate (19) in a slidable manner, and the bottom of the cylinder body (15) is symmetrically connected to the piston plate (19), and the bottom of the cylinder body (15) is connected to the piston plate (19). An elastic spring (20) is arranged between the cylinder body (15) and the piston plate (19), one end of the elastic spring (20) is fixedly connected to the cylinder body (15), and the other end of the elastic spring (20) is fixedly connected to the piston plate (19), a connecting rod (21) is rotatably connected to the piston plate (19), a disc (22) is fixedly connected to the output end of the motor (2), a support rod (23) is fixedly connected to the disc (22), and the connecting rod (21) is rotatably connected to the support rod (23).

4. A bacterial colony culture device for food detection according to claim 3, characterized in that: The fixed component comprises a shell (24), a push block (25) is slidably connected inside the shell (24), a return spring (26) is arranged between the push block (25) and the shell (24), one end of the return spring (26) is fixedly connected to the shell (24), and the other end of the return spring (26) is fixedly connected to the push block (25), and a plurality of protrusions are arranged on one end of the push block (25) that contacts the card interface (14).

5. A bacterial colony culture device for food detection according to claim 4, characterized in that: The one-way valve component comprises a box body (31), the box body (31) is respectively provided with an input port (27) and an output port (28), the box body (31) is provided with a through hole (29), a baffle (30) is arranged in the box body (31), a compression spring (32) is arranged at one end of the baffle (30), one end of the compression spring (32) is fixedly connected to the output port (28), the other end of the compression spring (32) is fixedly connected to the baffle (30), and the baffle (30) is in contact with the through hole (29).

6. A bacterial colony culture device for food detection according to claim 5, characterized in that: The gear ring (11) is symmetrically provided with limiting teeth (33), and the limiting teeth (33) are arranged perpendicular to the driven gear (10).

7. A bacterial colony culture device for food detection according to claim 6, characterized in that: A sealing ring (34) is provided on the side of the piston plate (19) away from the connecting rod (21), and the sealing ring (34) is fixedly connected to the piston plate (19).

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