Culture device for food detection and food detection method

Abstract

The invention discloses a culture device for food detection, which comprises a culture box, one side of the culture box is provided with a through hole, the through hole is provided with a detection extraction cylinder, the two sides of the top of the detection extraction cylinder are provided with symmetrical L-shaped limiting columns, an adjusting head is arranged between the L-shaped limiting columns, the bottom of the adjusting head is provided with a threaded sleeve, and the threaded sleeve is provided with a through hole. A threaded rod matched with the threaded sleeve is arranged in the threaded sleeve in a penetrating mode, the top of the threaded rod penetrates through the adjusting head, the bottom of the threaded rod penetrates through the top of the detection extraction barrel, a cover body is arranged at the bottom of the threaded rod, three lower side grooves are formed in the lower portion of the cover body, and grabbing heads are arranged at the lower side grooves; a detection cylinder is arranged at the bottom of the detection extraction cylinder, the detection cylinder penetrates through the through hole, and an inner ring is embedded in the top in the detection cylinder. The device has the beneficial effects that the situation that the microorganism culture environment in food is changed due to the fact that the food in the device is in contact with outside air is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of microbial culture, and in particular to a culture device for food detection and a food detection method. Background Art

[0002] With the continuous development of the national economy, people's material living standards are constantly improving, and they pay more and more attention to food quality and safety. In the process of food microbiological testing, microorganisms need to be cultured in order to better detect the types of microorganisms and thus better judge the safety of food quality.

[0003] Existing detection methods all require opening the culture device and then sampling and testing the food. Once the culture device is opened, the outside air will come into contact with the food in the culture device for a long time, causing the microbial culture environment in the food to change. Once the food is exposed to the outside air, the food microorganisms will undergo a transformation, which will have a greater impact on the subsequent microbial culture and greatly affect the subsequent food testing results, resulting in inaccurate test data. Summary of the Invention

[0004] The technical task of the present invention is to address the above shortcomings and provide a food testing culture device and a food testing method to solve the above problems.

[0005] The technical solution of the present invention is achieved as follows: The incubator is provided with a through hole on one side of the incubator, a detection and extraction cylinder is provided at the through hole, symmetrical L-shaped limit columns are provided on both sides of the top of the detection and extraction cylinder, an adjusting head is provided between the L-shaped limit columns, a threaded sleeve is provided at the bottom of the adjusting head, a matching threaded rod is inserted in the threaded sleeve, the top of the threaded rod passes through the adjusting head, the bottom of the threaded rod passes through the top of the detection and extraction cylinder, a cover is provided at the bottom of the threaded rod, three lower side grooves are provided at the lower part of the cover, grabbing heads are provided at the lower side grooves, a detection cylinder is provided at the bottom of the detection and extraction cylinder, the detection cylinder passes through the through hole, an inner ring is inlaid on the top of the detection cylinder, a partition is provided on the upper inner part of the detection cylinder, a second cylinder is provided at the bottom center of the partition, a matching second gas rod is provided in the second cylinder, the first The top of described outer cylinder is provided with the support of described support hood, and the top end of described support hood is provided with the support of described support hood.

[0006] Preferably, straight grooves are provided on both sides of the upper part of the detection and extraction cylinder, and two limit rods are provided on both sides of the top surface of the cover body, and the two limit rods pass through the straight grooves; an annular groove is provided at the lower part of the adjustment head, and the side of the L-shaped limit column is located in the annular groove; an insertion shaft is inserted into the upper part of the grabbing head, and the insertion shaft passes through the lower side groove.

[0007] Preferably, an inner top plate is provided in the upper inner part of the detection and extraction cylinder, the cover body is located below the inner top plate, and the threaded rod passes through the inner top plate; a certain distance is left between the outer wall of the inner ring and the inner wall of the detection cylinder; the cover body is configured to have an open inner cavity structure at the bottom.

[0008] Preferably, the bottom of the shaft is movably connected to the center of the bottom of the incubator, and a certain distance is left between the top of the inner rotating column and the inner top wall of the culture support cover; a food inlet is provided on the side of the top of the incubator away from the through hole.

[0009] Preferably, a convex ring is provided on the top edge of the through hole, a magnet is provided on the convex ring, an armature is provided at the bottom of the detection and extraction cylinder, the inner diameter of the bottom of the detection and extraction cylinder is adapted to the outer diameter of the top of the detection cylinder, and a sealing ring is provided between the outer diameter of the top of the detection cylinder and the inner diameter of the bottom of the detection and extraction cylinder.

[0010] Preferably, a sealing component is provided at the through hole, and the sealing component includes a support five, and the support five is fixed on the top side of the incubator close to the through hole. A first cylinder is provided on the support five, and a matching first gas rod is provided in the first cylinder. The first gas rod passes through the first cylinder, and a ring is provided at the end of the first gas rod away from the first cylinder. A guide rod is inserted into the middle of the ring, and a driving rod two is provided at both ends of the guide rod. A support four is provided on the side of the driving rod two close to the guide rod, and the supports four are respectively fixed on the side edges of the bottom of the through hole.

[0011] Preferably, the driving rods 2 pass through the through holes and extend to the top of the incubator, the tops of the driving rods 2 are provided with supports 3, the tops of the supports 3 are provided with cover plates, the tops of the cover plates are provided with supports 1 on both sides of the side away from the support 3, the outer sides of the support 1 are provided with driving rods 1, the ends of the driving rods 1 away from the support 1 are provided with supports 2, and the supports 2 are respectively fixed on the sides of the top of the incubator near the through holes.

[0012] Preferably, the driving rod is configured as an L-shaped structure, and a damping pad is provided at the bottom edge of the cover; and a temperature detector and a humidity detector are provided on the inner wall of the incubator.

[0013] Preferably, the driving part includes a rotating shaft, the bottom of which is fixed at the top center of the culture support cover, the top of which passes through the top of the incubator, and a motor is provided at the top of the rotating shaft, which is fixed at the top center of the incubator.

[0014] According to another aspect of the present invention, a food detection method is provided.

[0015] The food testing method comprises the following steps: Insert the conveying pipe into the food inlet, convey the minced food into the culture dish in the incubator, seal the food inlet, and culture and store the food; When it is necessary to test the food in the incubator, first insert the test tube into the through hole and place the top on the top wall of the through hole; Insert the detection extraction cylinder into the top of the detection cylinder to keep the interior of the incubator sealed to prevent outside air from entering the incubator when extracting food; Drive the second air cylinder and the second air rod to generate telescopic movement, so that the second air rod drives the draw plate to move in and out of the detection tube; The sampling needle is inserted into the culture dish to extract the food inside, and the food enters the detection cylinder; Manually adjust the adjusting head. When the adjusting head rotates, it drives the threaded rod inserted inside to move up and down; When the threaded rod moves downward, it presses the cover downward, and the grab head on the lower side will slide down from the inner wall of the inner ring. After the grab head slides below the inner ring, the lower part of the grab head unfolds and gets stuck at the bottom of the inner ring. The threaded rod moves upward, clamps the inner ring and then pulls it upward, and the detection tube is pulled out of the through hole together; Testing of food after extraction; When it is necessary to extract the food in different culture dishes, the motor is driven to operate; The motor drives the rotating shaft to rotate, and the rotating shaft will rotate with the culture support cover; After the culture support cover rotates, the slide groove on the inner wall drives the limit rod to move, and the limit rod moves with the guide groove; The inner rotating column will rotate, and the heat generated by the heater inside the inner rotating column will spread to the surroundings through the heat dissipation holes and the opening below as it rotates; The temperature inside the incubator is controlled to maintain the incubation effect of the food.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are: 1. A through hole is set on one side of the culture device. When the food in the incubator needs to be extracted and tested, the sealing component at the through hole is driven to open the through hole and the detection cylinder is inserted into it. After the detection cylinder blocks the through hole, a sealed cavity is still formed inside the incubator. At this time, when the food is extracted, the outside air will not enter the interior, and the food inside will not be exposed to the outside air, causing the microbial culture environment in the food to change. At the same time, after the food is extracted, it will be extracted again through the detection extraction cylinder. In this way, the extracted food will not directly contact the outside air, thereby improving the accuracy of the detection.

[0017] 2. When it is necessary to detect food at multiple positions, the culture support cover is directly driven to rotate, and the position of the culture dish is adjusted by the rotation of the culture support cover. In other words, only the position of the culture dish is changed, and the position of the extraction needle remains unchanged. Therefore, the food will not come into contact with the outside world. At the same time, when the culture support cover rotates, it will also drive the internal rotating column to rotate. The heat generated inside will be diffused through the rotation force, providing a certain temperature for the food inside the culture dish and maintaining a constant internal temperature.

[0018] 3. Compared with the existing ones, this device can still prevent the food from being directly exposed to the environment and contaminated by the outside air when extracting the food, so that the data obtained when the extracted food is tested will be more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 is a schematic structural diagram of the connection end between the sealing component and the incubator according to an embodiment of the present invention; Figure 2 is a schematic diagram of the end structure of a sealing component according to an embodiment of the present invention; Figure 3 2 is a schematic diagram of the structure of the connection end between the incubator and the detection and extraction cartridge according to an embodiment of the present invention; Figure 4 2. It is a schematic diagram of the structure of the culture support cover end according to an embodiment of the present invention; Figure 5 is a schematic diagram of the inner rotating column end structure according to an embodiment of the present invention; Figure 6 2. It is a schematic diagram of the structure of the culture support cover end according to an embodiment of the present invention; Figure 7 is a schematic diagram of the internal structure of an incubator according to an embodiment of the present invention; Figure 8 2. It is a schematic diagram of the internal structure of the detection and extraction cylinder according to an embodiment of the present invention; Figure 9 is a schematic structural diagram of a cover end according to an embodiment of the present invention; Figure 10 2 is a schematic diagram of the structure of the connection end between the threaded rod and the cover body according to an embodiment of the present invention; Figure 11 2 is a schematic diagram of the detection tube end structure according to an embodiment of the present invention.

[0021] In the picture: 1. Incubator; 2. Through hole; 3. Detection and extraction cylinder; 4. L-shaped limit column; 5. Adjustment head; 6. Threaded sleeve; 7. Threaded rod; 8. Cover; 9. Lower side groove; 10. Grabbing head; 11. Detection cylinder; 12. Inner ring; 13. Partition; 14. Second cylinder; 15. Second gas rod; 16. Extraction plate; 17. Sampling needle; 18. Culture support cover; 19. Culture dish; 20. Inner rotating column; 21. Heat dissipation hole; 22. Shaft; 23. Fixed column; 24. Slide plate; 25. Slider; 26. Limit rod 1; 27. Slide; 28. Straight groove; 29. ​​Limit rod 2; 30. Annular groove; 31. Insert shaft; 32. Inner top plate; 33. Food inlet; 34. Support 5; 35. First cylinder; 36. First gas rod; 37. Collar; 38. Guide rod; 39. Drive rod 2; 40. Support 4; 41. Support 3; 42. Cover plate; 43. Support 1; 44. Drive rod 1; 45. Support 2; 46. Rotating shaft; 47. Motor; 48. Guide groove. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1 According to an embodiment of the present invention, Figure 1-11 Shown in: The present invention provides a food testing culture device, comprising an incubator 1, wherein one side of the incubator 1 is provided with a through hole 2, wherein the through hole 2 is provided with a detection and extraction cylinder 3, wherein the top of the detection and extraction cylinder 3 is provided with symmetrical L-shaped limit columns 4 on both sides, an adjustment head 5 is provided between the L-shaped limit columns 4, and the bottom of the adjustment head 5 is provided with a threaded sleeve 6, wherein a matching threaded rod 7 is inserted into the threaded sleeve 6, and the top of the threaded rod 7 passes through the adjustment head 5, and the bottom of the threaded rod 7 passes through the top of the detection and extraction cylinder 3. The bottom of the threaded rod 7 is provided with a cover 8, and the lower part of the cover 8 is provided with three lower side grooves 9, and the lower side grooves 9 are provided with a grab head 10. The bottom of the detection and extraction cylinder 3 is provided with a detection cylinder 11, and the detection cylinder 11 passes through the through hole 2. The top of the detection cylinder 11 is inlaid with an inner ring 12, and the upper part of the detection cylinder 11 is provided with a partition 13. The bottom center of the partition 13 is provided with a second cylinder 14, and the second cylinder 14 is provided with a second gas rod 15 that matches. The second gas rod 15 passes through The second cylinder 14 and the second air rod 15 are provided with a pumping plate 16 at the bottom, and a sampling needle 17 is provided at the bottom center of the detection cylinder 11; a culture support cover 18 is provided at the lower part of the incubator 1, and a plurality of culture dishes 19 are provided on the top side of the culture support cover 18, and a driving part is provided at the top center of the culture support cover 18, and an inner rotating column 20 is provided in the culture support cover 18, and a plurality of heat dissipation holes 21 are provided on the top of the inner rotating column 20, and a heater is provided in the inner rotating column 20. 0 is provided with a shaft rod 22 at the bottom center, a fixing column 23 is sleeved on the upper part of the shaft rod 22, symmetrical slides 24 are provided on both sides of one side of the fixing column 23, matching sliders 25 are provided between the sliders 24, a limiting rod 26 is inserted into the middle of the slider 25, a guide groove 48 is provided on the surface of the inner rotating column 20, the inner end of the limiting rod 26 is located in the guide groove 48, a slide groove 27 is provided at the center of the inner wall of the culture support cover 18, and the outer end of the limiting rod 26 is located in the slide groove 27.

[0025] Among them, straight grooves 28 are provided on both sides of the upper part of the detection and extraction cylinder 3, and limiting rods 29 are provided on both sides of the top surface of the cover body 8, and the limiting rods 29 pass through the straight grooves 28; an annular groove 30 is provided at the lower part of the adjusting head 5, and the side of the L-shaped limiting column 4 is located in the annular groove 30; an insertion shaft 31 is inserted into the upper part of the grabbing head 10, and the insertion shaft 31 passes through the lower side groove 9, and an inner top plate 32 is provided on the upper part of the detection and extraction cylinder 3, and the cover body 8 is located below the inner top plate 32, and the threaded rod 7 passes through the inner top plate 32; a certain distance is left between the outer wall of the inner ring 12 and the inner wall of the detection cylinder 11; the cover body 8 is set to have an open inner cavity structure at the bottom, and the bottom of the shaft 22 is movably connected to the bottom center of the incubator 1, and the inner rotating column There is a certain distance between the top of 20 and the inner top wall of the culture support cover 18; a food inlet 33 is provided on the side of the top of the incubator 1 away from the through hole 2, and a convex ring is provided on the top edge of the through hole 2, and a magnet is provided on the convex ring, and an armature is provided at the bottom of the detection and extraction cylinder 3, and the inner diameter size of the bottom of the detection and extraction cylinder 3 is adapted to the outer diameter size of the top of the detection cylinder 11, and a sealing ring is provided between the outer diameter of the top of the detection cylinder 11 and the inner diameter of the bottom of the detection and extraction cylinder 3, and the driving part includes a rotating shaft 46, the bottom of the rotating shaft 46 is fixed at the top center of the culture support cover 18, the top of the rotating shaft 46 passes through the top of the incubator 1, and the top of the rotating shaft 46 is provided with a motor 47, and the motor 47 is fixed at the top center of the incubator 1.

[0026] Symmetrical L-shaped limit columns 4 are set on both sides of the top of the cover body 8. The cross-section of the lower position of the adjusting head 5, that is, below the annular groove 30, is smaller than the cross-sectional size of the upper part. The side edges of the L-shaped limit columns 4 are embedded in the annular groove 30. When the adjusting head 5 rotates, the L-shaped limit columns 4 on both sides remain stationary, and the threaded sleeve 6 rotates at its original position. The limit rod 29 of the cover body 8 is inserted into the straight groove 28. Under the limiting action of the straight groove 28, the threaded rod 7 will realize the up and down movement.

[0027] In addition, a sealing component is provided at the through hole 2, and the sealing component includes a support five 34, and the support five 34 is fixed to the top of the incubator 1 on one side close to the through hole 2, and a first cylinder 35 is provided on the support five 34, and a first gas rod 36 is provided in the first cylinder 35 to match, and the first gas rod 36 passes through the first cylinder 35, and a collar 37 is provided at the end of the first gas rod 36 away from the first cylinder 35, and a guide rod 38 is inserted in the middle of the collar 37, and a driving rod 2 39 is provided at both ends of the guide rod 38, and a support four 40 is provided on the side of the driving rod 2 39 close to the guide rod 38, and the support four 40 is respectively fixed on the side edge of the bottom of the through hole 2. The second driving rod 39 passes through the through hole 2 and extends to the top of the incubator 1. The top of the second driving rod 39 is provided with a support three 41. The top of the support three 41 is provided with a cover plate 42. The top of the cover plate 42 is provided with a support 1 43 on both sides of the side away from the support three 41. The outside of the support 1 43 is provided with a driving rod 1 44. The end of the driving rod 1 44 away from the support 1 43 is provided with a support 2 45. The support 2 45 is respectively fixed on the side of the top of the incubator 1 near the through hole 2. The driving rod 1 44 is set to an L-shaped structure. The bottom edge of the cover plate 42 is provided with a damping pad. The inner wall of the incubator 1 is provided with a temperature detector and a humidity detector.

[0028] During the culture process, the first cylinder 35 and the first gas rod 36 are driven to generate telescopic movement. The first gas rod 36 pulls the guide rod 38 to the right, and the guide rod 38 drives the bottom of the second driving rod 39 at both ends to the right, and the top of the second driving rod 39 is pulled to the lower left. At this time, the second driving rod 39 covers the through hole 2 with the cover plate 42, and a sealed cavity is formed inside the incubator 1.

[0029] An inspection port is provided at the bottom of the incubator 1 to facilitate the disassembly and installation of the internal culture support cover 18 and the upper structure.

[0030] Example 2 A food testing method comprises the following steps: S101: Insert the delivery pipe into the food inlet 33, deliver the minced food into the culture dish 19 in the incubator 1, seal the food inlet 33, and culture and store the food; S103: When the food in the incubator 1 needs to be tested, the testing cylinder 11 is first inserted into the through hole 2, with the top portion resting on the top wall of the through hole 2; S105: Insert the detection and extraction cylinder 3 into the top of the detection cylinder 11 to keep the interior of the incubator 1 sealed to prevent outside air from entering the incubator 1 when extracting food; S107: driving the second air cylinder 14 and the second air rod 15 to generate a telescopic motion, so that the second air rod 15 drives the draw plate 16 to move in and out of the detection tube 11; S109: The sampling needle 17 is inserted into the culture dish 19 to extract the food inside, and the food enters the detection cylinder 11; S1011: Manually adjust the adjusting head 5. After the adjusting head 5 rotates, it drives the threaded rod 7 inserted inside to move up and down; S1013: After the threaded rod 7 moves downward, it presses the cover 8 downward, and the grab head 10 on the lower side slides down from the inner wall of the inner ring 12. After the grab head 10 slides below the inner ring 12, the lower part of the grab head 10 unfolds and is stuck at the bottom of the inner ring 12; S1015: The threaded rod 7 moves upward, engages the inner ring 12, and then pulls it upward, and the detection tube 11 is pulled out of the through hole 2 together; S1017: Testing of food after extraction; S1019: When it is necessary to extract the food in different culture dishes 19, the driving motor 47 is operated; S1021: The motor 47 drives the rotating shaft 46 to rotate, and the rotating shaft 46 rotates with the culture support cover 18; S1023: After the culture support cover 18 rotates, the slide groove 27 on the inner wall drives the limit rod 1 26 to move, and the limit rod 1 26 moves with the guide groove 48; S1025: The inner rotating column 20 rotates, and the heat generated by the heater inside the inner rotating column 20 is diffused from the heat dissipation holes 21 and the lower opening to the surrounding areas as it rotates; S1027: The temperature inside the incubator 1 is controlled to maintain the incubation effect of the food.

[0031] Detailed usage and effects of this embodiment: Insert the detection cylinder 11 into the through hole 2, and then drive the second cylinder 14 and the second air rod 15 to generate a telescopic movement. The second air rod 15 presses the extraction plate 16 to generate a pulling movement in the detection cylinder 11, prompting the sampling needle 17 inserted into the culture dish 19 to extract the food and extract it into the detection cylinder 11. Then insert the detection and extraction cylinder 3 into the through hole 2, manually adjust the adjusting head 5 to rotate, the adjusting head 5 will drive the threaded sleeve 6 connected at the bottom to rotate, and after the threaded sleeve 6 rotates, it will drive the threaded rod 7 inserted in the middle, and the threaded rod 7 will realize up and down movement. When the threaded rod 7 is pressed down, it presses the cover body 8 connected at the bottom, and the grabbing head 10 at the lower part of the cover body 8 slides down from the inner wall of the inner ring 12. After the lower part of the grabbing head 10 is extended under the inner ring 12, it is unfolded to grab the bottom of the inner ring 12, and then the adjusting head 5 is adjusted in the opposite direction, the threaded rod 7 rises, and the grabbing head 10 brings the detection cylinder 11 up together. In this way, when extracting food, it prevents outside air from entering the incubator 1, affecting the changes in the microbial culture environment in the food.

[0032] Among them, the driving motor 47 is running, and the motor 47 drives the rotating shaft 46 to rotate. After the rotating shaft 46 rotates, it will drive the culture support cover 18 to rotate. The culture support cover 18 drives the top culture dish 19 to rotate to a suitable position, so that the culture dish 19 is just facing the sampling needle 17, which is convenient for the sampling needle 17 to extract the food in the culture dish 19 below.

[0033] When the culture support cover 18 rotates, the slide groove 27 on the inner wall will drive the limit rod 26 to move, and the limit rod 26 will drive the guide groove 48 on the other side to move, causing the inner rotating column 20 to rotate. The heat generated by the heater inside the inner rotating column 20 diffuses from the bottom opening and the top heat dissipation hole 21 to the surroundings as it rotates, maintaining the internal temperature of the incubator 1. When the internal humidity is insufficient, it can be detected by the internal humidity detector, and the interior can be humidified in time to maintain the internal humidity balance.

[0034] The above specific embodiments will allow those skilled in the art to easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific embodiments. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to implement different technical solutions.

Claims

1. A food testing culture device, characterized in that: The invention comprises an incubator (1), wherein a through hole (2) is provided on one side of the incubator (1), a detection and extraction cylinder (3) is provided at the through hole (2), symmetrical L-shaped limit columns (4) are provided on both sides of the top of the detection and extraction cylinder (3), an adjustment head (5) is provided between the L-shaped limit columns (4), a threaded sleeve (6) is provided at the bottom of the adjustment head (5), a matching threaded rod (7) is inserted in the threaded sleeve (6), the top of the threaded rod (7) passes through the adjustment head (5), the bottom of the threaded rod (7) passes through the top of the detection and extraction cylinder (3), a cover body (8) is provided at the bottom of the cover body (8), and three lower side grooves (9) are provided at the lower part of the cover body (8) , a grab head (10) is provided at each of the lower grooves (9), a detection cylinder (11) is provided at the bottom of the detection and extraction cylinder (3), the detection cylinder (11) passes through the through hole (2), an inner ring (12) is inlaid at the top of the detection cylinder (11), a partition (13) is provided at the upper part of the detection cylinder (11), a second cylinder (14) is provided at the bottom center of the partition (13), a second gas rod (15) matching with the second gas cylinder (14) is provided in the second gas cylinder (14), the second gas rod (15) passes through the second gas cylinder (14), a pumping plate (16) is provided at the bottom of the second gas rod (15), and a sampling needle (17) is provided at the bottom center of the detection cylinder (11); The culture box (1) has a culture support cover (18) at the lower part, a plurality of culture dishes (19) are arranged on the top side of the culture support cover (18), a driving unit is arranged at the top center of the culture support cover (18), an inner rotating column (20) is arranged in the culture support cover (18), a plurality of heat dissipation holes (21) are arranged on the top of the inner rotating column (20), a heater is arranged in the inner rotating column (20), a shaft (22) is arranged at the bottom center of the inner rotating column (20), and a fixed sleeve is arranged on the upper part of the shaft (22). A fixed column (23), symmetrical slide plates (24) are provided on both sides of one side of the fixed column (23), a matching slide block (25) is provided between the slide plates (24), a limit rod (26) is inserted in the middle of the slide block (25), a guide groove (48) is provided on the surface of the inner rotating column (20), the inner end of the limit rod (26) is located in the guide groove (48), and a slide groove (27) is provided at the center of the inner wall of the culture support cover (18), and the outer end of the limit rod (26) is located in the slide groove (27).

2. A food testing culture device according to claim 1, characterized in that: Both sides of the upper part of the detection and extraction cylinder (3) are provided with straight grooves (28), and both sides of the top of the surface of the cover body (8) are provided with second limit rods (29), and the second limit rods (29) penetrate the straight grooves (28); An annular groove (30) is provided at the lower portion of the adjusting head (5), and the side edge of the L-shaped limiting column (4) is located in the annular groove (30); An insertion shaft (31) is inserted into the upper portion of the grabbing head (10), and the insertion shaft (31) passes through the lower groove (9).

3. A food testing culture device according to claim 2, characterized in that: An inner top plate (32) is provided at the upper inner portion of the detection and extraction cylinder (3), the cover body (8) is located below the inner top plate (32), and the threaded rod (7) passes through the inner top plate (32); A certain distance is left between the outer wall of the inner ring (12) and the inner wall of the detection cylinder (11); The cover body (8) is configured as a structure with an open inner cavity at the bottom.

4. A food testing culture device according to claim 3, characterized in that: The bottom of the shaft (22) is movably connected to the center of the bottom of the culture box (1), and a certain distance is left between the top of the inner rotating column (20) and the inner top wall of the culture support cover (18); A food inlet (33) is provided on a side of the top of the incubator (1) away from the through hole (2).

5. A food testing culture device according to claim 4, characterized in that: A convex ring is provided at the top edge of the through hole (2), a magnet is provided on the convex ring, an armature is provided at the bottom of the detection and extraction cylinder (3), the inner diameter of the bottom of the detection and extraction cylinder (3) is matched with the outer diameter of the top of the detection cylinder (11), and a sealing ring is provided between the outer diameter of the top of the detection cylinder (11) and the inner diameter of the bottom of the detection and extraction cylinder (3).

6. A food testing culture device according to claim 5, characterized in that: A sealing component is provided at the through hole (2), and the sealing component includes a support five (34). The support five (34) is fixed at one side of the top of the incubator (1) close to the through hole (2). A first cylinder (35) is provided on the support five (34). A first gas rod (36) matching with the first gas cylinder (35) is provided in the first gas cylinder (35). The first gas rod (36) passes through the first gas cylinder (35). A collar (37) is provided at one end of the first gas rod (36) away from the first gas cylinder (35). A guide rod (38) is inserted in the middle of the collar (37). A driving rod two (39) is provided at both ends of the guide rod (38). A support four (40) is provided on one side of the driving rod two (39) close to the guide rod (38). The support four (40) is respectively fixed on the side edge of the bottom of the through hole (2).

7. A food testing culture device according to claim 6, characterized in that: The second driving rod (39) passes through the through hole (2) and extends to the top of the incubator (1); a support three (41) is provided on the top of the second driving rod (39); a cover plate (42) is provided on the top of the support three (41); a support one (43) is provided on both sides of the top of the cover plate (42) away from the support three (41); a driving rod one (44) is provided on the outside of the support one (43); a support two (45) is provided on the end of the driving rod one (44) away from the support one (43); the support two (45) is respectively fixed on the side of the top of the incubator (1) near the through hole (2).

8. A food testing culture device according to claim 7, characterized in that: The driving rod 1 (44) is configured as an L-shaped structure, and a damping pad is provided at the bottom edge of the cover plate (42); The inner wall of the incubator (1) is provided with a temperature detector and a humidity detector.

9. A food testing culture device according to claim 8, characterized in that: The driving unit comprises a rotating shaft (46), the bottom of which is fixed at the top center of the culture support cover (18), the top of which passes through the top of the culture box (1), and a motor (47) is provided at the top of the rotating shaft (46), which is fixed at the top center of the culture box (1).

10. A food detection method, characterized in that: The food testing culture device according to claim 9 comprises the following steps: Inserting the conveying pipe into the food inlet (33), conveying the ground food into the culture dish (19) in the culture box (1), sealing the food inlet (33), and culturing and storing the food; When it is necessary to test the food in the incubator (1), firstly, the testing tube (11) is inserted into the through hole (2), and the top is mounted on the top wall of the through hole (2); Inserting the detection and extraction cylinder (3) into the top of the detection cylinder (11) to keep the interior of the incubator (1) in a sealed state, thereby preventing outside air from entering the interior of the incubator (1) when extracting food; Driving the second air cylinder (14) and the second air rod (15) to generate a telescopic movement, so that the second air rod (15) drives the draw plate (16) to move in and out of the detection tube (11); The sampling needle (17) is inserted into the culture dish (19) to extract the food inside, and the food enters the detection cylinder (11); The adjusting head (5) is manually adjusted. When the adjusting head (5) is rotated, the threaded rod (7) inserted inside is driven to move up and down; When the threaded rod (7) moves downward, it presses the cover body (8) downward, and the grab head (10) on the lower side slides down from the inner wall of the inner ring (12). After the grab head (10) slides below the inner ring (12), the lower part of the grab head (10) unfolds and is stuck at the bottom of the inner ring (12); The threaded rod (7) moves upward, engages the inner ring (12), and then is pulled upward, and the detection tube (11) is pulled out of the through hole (2) together with the inner ring (12). Testing of food after extraction; When it is necessary to extract the food in different culture dishes (19), the driving motor (47) is operated; The motor (47) drives the rotating shaft (46) to rotate, and the rotating shaft (46) drives the culture support cover (18) to rotate; After the culture support cover (18) rotates, the slide groove (27) on the inner wall drives the limiting rod (26) to move, and the limiting rod (26) moves with the guide groove (48); The inner rotating column (20) will rotate, and the heat generated by the heater inside the inner rotating column (20) will diffuse to the surroundings from the heat dissipation holes (21) and the lower opening as the column rotates; The temperature inside the incubator (1) is controlled to maintain the incubation effect of the food.

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