Microorganism detection device

Abstract

The invention discloses a microbiological detection device. The microbiological detection device comprises a base, a sampling unit and a test unit, the sampling unit comprises a sampling seat arranged on the base, a placing mechanism arranged on the sampling seat, a cutting mechanism for cutting pastries, an overturning mechanism for overturning the pastries and a collecting mechanism for collecting waste materials; the placing mechanism is used for feeding a sample into the test unit; the cutting mechanism comprises a cutting frame arranged on the base in a lifting mode, a first cutter movably arranged on the cutting frame, a second cutter used in cooperation with the first cutter and a transmission assembly for achieving alternate movement of the first cutter and the second cutter, the first cutter cuts the four side faces of a cake, and the second cutter cuts the four side faces of the cake. And the second cutter is used for cutting the other four side surfaces of the pastries. The pastry coring device has the effect of conveniently coring pastries, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of microbial detection, and particularly to a microbial detection device. Background Art

[0002] Pastries are a type of food made mainly from one or several of the ingredients such as grains, beans, tubers, oils, sugars, eggs, etc., with or without the addition of other raw materials, and are made through processes such as modulation, shaping, and cooking. Before or after cooking, cream, protein, cocoa, jam, etc. are often added to the surface of the product or inside after cooking. During the production process of pastry products, it is necessary to detect their microorganisms. Microorganisms include a large group of biological populations such as bacteria, viruses, fungi, and some small protozoa, microscopic algae, etc. They are tiny in size and closely related to humans. Since microorganisms are difficult to observe with the naked eye, microbial rapid detection instruments are usually used for microbial detection work.

[0003] Currently, during the biological detection of pastries, since the surface of the pastry is exposed to the air after production, it is easy to cause the influence of the external environment on the quality of pastry microbial detection. However, how to remove the pastry skin to obtain the inner core of the pastry requires manual or mechanical claws to cooperate for turning and cutting. Manual operation has the problem of low efficiency, and mechanical claws are easy to damage the pastry. Therefore, there is an urgent need to set up a scheme that is convenient for obtaining the inner core of the pastry. Summary of the Invention

[0004] In order to improve the problem of inconvenient sampling of the inner core of pastries, this application provides a microbial detection device.

[0005] A microbial detection device provided by this application adopts the following technical solutions: A microbial detection device includes a base, a sampling unit, and a test unit; The sampling unit includes a sampling seat arranged on the base, a placement mechanism arranged on the sampling seat, a cutting mechanism for cutting pastries, a turning mechanism for turning pastries, and a collection mechanism for collecting waste; the placement mechanism is used to send the sample into the test unit; The cutting mechanism includes a cutting frame arranged on the base in a lifting manner, a first cutter movably arranged on the cutting frame, a second cutter used in cooperation with the first cutter, and a transmission component for realizing the alternating movement of the first cutter and the second cutter. The first cutter cuts the four side surfaces of the pastry, and the second cutter cuts the other four side surfaces of the pastry.

[0006] Optionally, the cutting mechanism further includes a gas supply assembly, a main pipe, a first pipe, and a second pipe. Inner cavities are provided inside both the first cutter and the second cutter. The main pipe is connected to the output end of the gas supply assembly. Two ends of the main pipe are respectively connected to the first pipe and the second pipe. Solenoid valves are provided on both the first pipe and the second pipe.

[0007] Optionally, the flipping mechanism includes a plurality of flipping papers, a fulcrum column that is vertically arranged on the sampling base, a traction assembly for pulling the flipping papers, and an identification assembly for identifying whether the pastry is flipped. The flipping papers are movably arranged on the sampling base. The traction assembly is used to lift the flipping papers to achieve the effect of flipping the pastry. After the fulcrum column descends above the flipping papers, it serves as the fulcrum for pastry flipping. The height dimension of the fulcrum column is smaller than the original thickness dimension of the pastry. The fulcrum column is close to the flipping papers and does not contact the flipping papers.

[0008] Optionally, the traction assembly includes a traction frame that is vertically arranged on the sampling base, a traction roller, a winding roller, a plurality of traction ropes, and two rotating motors. The traction roller is rotatably arranged on the traction frame. The two rotating motors are respectively used to control the traction roller and the winding roller. The plurality of flipping papers and the plurality of traction ropes are arranged at intervals. The traction ropes are connected to the flipping papers. The traction ropes at both ends are respectively fixedly connected to the outer walls of the traction roller and the winding roller. When the traction frame ascends, the pastry starts to flip during the process of contacting the fulcrum column.

[0009] Optionally, the identification assembly includes a first infrared sensor and a second infrared sensor. The first infrared sensor is arranged at the center position of the sampling base. The second infrared sensor is arranged at the position after the pastry is turned over. The flipping papers are transparent. The second infrared sensor controls the lifting and lowering of the traction frame. The first infrared sensor is electrically connected to the rotating motor of the traction roller.

[0010] Optionally, the collection mechanism includes a collection box and a suction assembly. The collection box is arranged on the sampling base and is located outside the flipping papers. A plurality of filter holes are provided at the bottom of the collection box. The suction assembly is used to suck the collection box.

[0011] Optionally, the transmission assembly includes a transmission motor, a gear, and two racks. The transmission motor is disposed on the base. The gear is rotatably disposed on the base. The racks are slidably disposed on the base. The two racks are respectively fixedly connected to the first cutter and the second cutter. The transmission assembly further includes a rotating disk, a stepping motor, a plugging block, a transmission block, and a driving block. The output end of the stepping motor is coaxially fixed to the rotating disk. The driving block is disposed on the peripheral wall of the rotating disk. The end of the transmission block is provided with an inclined surface. The gear is provided with a plugging slot. The base is provided with a plugging hole therethrough. The plugging block is elastically disposed in the plugging slot. The plugging block is plugged into the plugging hole. The transmission block is slidably disposed in the plugging hole. After the driving block abuts against the inclined surface of the transmission block, the transmission block is pushed into the plugging hole.

[0012] Optionally, the placing mechanism is provided with a placing table, a control board, and a control motor that are slidably disposed in the sampling base. The first infrared sensor is disposed on the control board. The placing table is provided with a placing groove for placing the core of the pastry. The sampling base is provided with a sampling port. The control board is rotatably disposed at the sampling port. The output end of the control motor is fixedly connected to one end of the control board.

[0013] Optionally, the traction assembly further includes a plurality of adhesion members, and the adhesion members, the turning paper, and the traction rope are sequentially arranged.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. Place the pastry on the sampling base. The cutting mechanism performs the first cutting on the pastry, that is, cuts the four sides of the pastry. After the turning mechanism turns the pastry and then performs cutting again, the operation of taking the core of the pastry can be completed. The collection mechanism is used to recycle the waste materials generated by cutting the pastry. Finally, the obtained core is pushed into the test unit by the placing mechanism. 2. When starting the sampling detection, the winding roller and the traction roller can be controlled to cooperate with each other to pull the turning paper to the surface of the sampling seat. The turning paper is located on the sampling seat, and pastries are placed on the sampling seat through automatic picking and placing or manually. Moreover, it is ensured that the pastries are located on the first infrared sensor. At this time, the first cutter is controlled to descend and cut the pastries to complete the first cutting. The waste is collected by the collection mechanism. After the cleaning is completed, the traction frame is pulled upward. The vertical height of the traction roller is higher than that of the winding roller. Therefore, one end of the turning paper close to the traction roller is higher than the other end, and the pastries are turned over. In this embodiment, the rising height of the traction frame is controlled, so that the pastries can only be turned over once. At this time, the turning work of the pastries can be completed. The pastries block the second infrared sensor. At this time, the first cutter and the second cutter are replaced. At the same time, it is necessary to control the traction frame to descend to the initial position, and control the traction roller and the winding roller to cooperate with each other to pull the pastries after the first cutting to the position of the first infrared sensor. The second cutter descends and cuts the pastries for the second time to complete the core-taking work of the pastries; 3. When the pastries are completed with the first cutting and turned over, at this time, the first infrared sensor does not recognize the pastries. At this time, the turntable rotates one-third of a circle. When the second infrared sensor is completely blocked, the second infrared sensor controls the turntable to continue rotating one-third of a circle, indicating that the pastries are turned over. At this time, it is necessary to control the turning paper to drive the turned-over pastries to the position of the first infrared sensor. At this time, the first infrared sensor is blocked again, and the first infrared sensor controls the turntable to rotate one-third of a circle again. In this process, the end of the driving block contacts the end of the transmission block. The end of the driving block can be set as an arc shape to facilitate its driving of the transmission block. The transmission block completely pulls out the plug-in block from the plug-in hole. At this time, the rotation of the gear is released. Control the rotation of the gear. Under the cooperation of the two racks, the first cutter retracts and the second cutter is released. Of course, after the pastries are completed with the second cutting, the first cutter is released, the first cutter retracts, and the driving block is rotated to the designated position to facilitate the cutting of the next pastry. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the embodiment of the present application; Figure 2 is the schematic diagram of the sampling unit of the embodiment of the present application; Figure 3 is the schematic diagram of the cutting mechanism of the embodiment of the present application; Figure 4 is the schematic diagram of the transmission component of the embodiment of the present application; Figure 5 is the schematic diagram of the turning paper, the traction rope and the adhesion member of the embodiment of the present application.

[0016] Reference Signs: 1, base; 2, test unit; 3, sampling base; 4, cutting frame; 5, first cutter; 6, second cutter; 7, air supply assembly; 8, main pipe; 9, first pipe; 10, second pipe; 11, turning paper; 12, traction frame; 13, traction roller; 14, winding roller; 15, traction rope; 16, rotation motor; 17, first infrared sensor; 18, second infrared sensor; 19, collection box; 20, suction assembly; 21, drive motor; 22, gear; 23, rack; 24, rotating disc; 25, stepper motor; 26, plug-in block; 27, drive block; 28, drive block; 29, plug-in slot; 30, plug-in hole; 31, placement table; 32, control board; 33, attachment; 34, sampling port; 35, placement groove; 36, fulcrum column; 37, fulcrum bracket. Detailed Implementation Manner

[0017] The following further elaborates on this application Figures 1-5 with reference to the accompanying drawings.

[0018] An embodiment of this application discloses a microbial detection device. Referring to Figures 1-5 , a microbial detection device includes a base 1, a sampling unit, and a test unit 2; the test unit 2 uses the ATP bioluminescence method, that is, after sampling the pastry, the cells are lysed by a corresponding solvent to release ATP, and finally the ATP content is detected by a fluorescence reaction, so as to complete the detection of the microorganisms in the pastry. In the embodiment of this application, an ATP fluorescence detector in the prior art is used for detection, and the specific detection principle will not be elaborated in this embodiment. In addition, it should be emphasized that the pastry can be square or round, and the pastry is made of flour and will not be coated with other substances such as cream and jam, and the pastry will not break and generate other impurities during the turning process.

[0019] The sampling unit includes a sampling base 3 arranged on the base 1, a placement mechanism arranged on the sampling base 3, a cutting mechanism for cutting the pastry, a turning mechanism for turning the pastry, and a collection mechanism for collecting waste; the placement mechanism is used to send the sample into the test unit 2; the pastry is placed on the sampling base 3, and the pastry is first cut by the cutting mechanism, that is, the four sides of the pastry are cut, and after the turning mechanism turns the pastry and cuts it again, the core-taking operation of the pastry can be completed. The collection mechanism is used to recycle the waste generated by cutting the pastry, and finally the obtained core is pushed into the test unit 2 by the placement mechanism.

[0020] The cutting mechanism includes a cutting frame 4 arranged on the base 1 in a lifting manner, a first cutter 5 movably arranged on the cutting frame 4, a second cutter 6 used in cooperation with the first cutter 5, and a transmission component for realizing the alternating movement of the first cutter 5 and the second cutter 6. The first cutter 5 cuts the four side surfaces of the pastry, and the second cutter 6 cuts the other four side surfaces of the pastry. The lifting of the cutting frame 4 is realized by an electric push rod. The inner diameter of the first cutter 5 is larger than that of the second cutter 6. The first cutter 5 performs the first cutting on the pastry, and the second cutter 6 is used for performing the second cutting on the flipped pastry. The horizontal cross-sections of both the first cutter 5 and the second cutter 6 are set in a square shape. In this embodiment, it is determined that the inner diameter of the second cutter 6 is smaller than the size of the pastry after the first cutting, which can ensure that even when the pastry is not located at the center of the second cutter 6, the second cutter 6 can still cut the pastry, improving the completion rate of the operation.

[0021] The flipping mechanism includes a plurality of flipping papers 11, a fulcrum column 36 arranged on the sampling base 3 in a lifting manner, a traction component for pulling the flipping paper 11, and an identification component for identifying whether the pastry is flipped. The flipping paper 11 is made of plastic paper and is made of a transparent material. The flipping paper 11 is movably arranged on the sampling base 3. The traction component is used to lift the flipping paper 11 to achieve the effect of flipping the pastry. First, the pastry is placed on the flipping paper 11 through a conveyor line or manually. At this time, the first cutter 5 is controlled to move, and the first cutter 5 cuts the four side surfaces of the pastry. Then, after the pastry is flipped by using the traction component and the fulcrum column 36, that is, the fulcrum column 36 descends above the flipping paper 11 and is close to the side of the pastry to be flipped. By controlling the end on the opposite side of the flipping paper 11 and the fulcrum column 36 to move upward, the fulcrum column 36 serves as the fulcrum for the pastry to flip and completes the flipping under the action of the inclined flipping paper 11. The height dimension of the fulcrum column 36 is smaller than the thickness dimension of the pastry. The fulcrum column 36 is close to the flipping paper and will not contact the flipping paper 11, that is, the fulcrum column 36 is infinitely close to the flipping paper 11 but will not contact the flipping paper 11. Moreover, in this embodiment, the cross-section of the fulcrum column 36 can be set as a triangle or a circle, preferably a triangle, which is more conducive to the pastry to flip after contacting the fulcrum column 36.

[0022] In this embodiment, the lifting of the fulcrum column 36 is realized by an electric push rod. The fulcrum column 36 is fixedly connected with a fulcrum bracket 35. The length dimension of the fulcrum column 36 is greater than the width dimension of the turnover paper 11 and also greater than the longest side dimension of the pastry, which is conducive to the turnover effect of the pastry by the fulcrum column and the turnover paper 11 together, thus ensuring that the pastry is turned over once. Moreover, the lifting position of the fulcrum column 11 deviates from the first cutter 5 and the second cutter 6, ensuring that the normal operation of the first cutter 5 and the second cutter 6 will not be affected. And the distance between the fulcrum bracket 35 and the fulcrum column 36 will not interfere with the turnover work of the pastry; then the replacement of the second cutter 6 and the first cutter 5 is realized through the transmission component, and the cutting of the pastry by the second cutter 6 is realized.

[0023] The traction component includes a traction bracket 12, a traction roller 13, a winding roller 14, a plurality of traction ropes 15 and two rotating motors 16 which are arranged in a lifting manner on the sampling seat 3. The traction roller 13 is rotatably arranged on the traction bracket 12. The two rotating motors 16 are respectively used to control the traction roller 13 and the winding roller 14. The plurality of turnover papers 11 and the plurality of traction ropes 15 are arranged at intervals. The traction ropes 15 are connected with the turnover papers 11. The traction ropes 15 at both ends are respectively fixedly connected with the outer walls of the traction roller 13 and the winding roller 14. The lifting of the traction bracket 12 is realized by an electric push rod, and the traction bracket 12 will not affect the movement of the cutting bracket 4. The axial directions of the traction roller 13 and the winding roller 14 are horizontally arranged and perpendicular to the movement direction of the turnover paper 11. Two traction ropes 15 are set as a group, that is, one ends of the two traction ropes 15 are respectively fixedly connected with two corners on the same side of the turnover paper 11. In the initial state, the central axes of the traction roller 13 and the winding roller 14 are on the same horizontal plane. At this time, the turnover paper 11 is also laid on the upper surface of the sampling seat 3, and the turnover paper 11 is in a taut state. The area of the turnover paper 11 is only slightly larger than the area of the sampling seat 3 to avoid the turnover paper 11 affecting the removal of the pastry waste.

[0024] The identification component includes a first infrared sensor 17 and a second infrared sensor 18. The first infrared sensor 17 is arranged at the central position of the sampling seat 3. The second infrared sensor 18 is arranged at the position after the pastry is turned over. The turnover paper 11 is transparent. The second infrared sensor 18 controls the lifting of the traction bracket 12. The first infrared sensor 17 is electrically connected to the rotating motor 16 of the traction roller 13. The first infrared sensor 17 identifies the initial position of the pastry, that is, it is used to ensure that the initial position of the pastry is at the specified position. In this embodiment, it is not necessary to ensure that the central position of the pastry is at the same position as the first infrared sensor 17, because the sizes of both the first cutter 5 and the second cutter 6 are smaller than the size of the current pastry, and it is only necessary to ensure that the first cutter 5 and the second cutter 6 can cut smoothly.

[0025] The winding roller 14 and the traction roller 13 can also be provided with protective covers. In particular, the protective cover outside the winding roller 14 can minimize the contamination of the turnover paper 11. However, it is also necessary to ensure that the turnover paper 11 on the winding roller 14 can be normally pulled out. In the initial state, the traction rope 15 is located on the upper surface of the sampling seat 3. When starting the sampling detection, the winding roller 14 and the traction roller 13 can be controlled to cooperate with each other to pull the turnover paper 11 to the surface of the sampling seat 3. The turnover paper 11 is located on the sampling seat 3, and pastries are placed on the sampling seat 3 through automatic picking and placing or manually, and it is ensured that the pastries are located on the first infrared sensor 17. At this time, the first cutter 5 is controlled to descend and cut the pastries to complete the first cutting. The waste is collected by the collection mechanism. After the cleaning is completed, the traction frame 12 is pulled upward. The vertical height of the traction roller 13 is higher than that of the winding roller 14. Therefore, one end of the turnover paper 11 close to the traction roller 13 is higher than the other end, and the pastry is turned over. In this embodiment, the rising height of the traction frame 12 is controlled, so that the pastry can only be turned over once. At this time, the turnover work of the pastry can be completed. The pastry blocks the second infrared sensor 18. At this time, the first cutter 5 and the second cutter 6 are replaced. At the same time, it is necessary to control the traction frame 12 to descend to the initial position, and control the traction roller 13 and the winding roller 14 to cooperate with each other to pull the pastry after the first cutting to the position of the first infrared sensor 17. The second cutter 6 descends and cuts the pastry for the second time to complete the core-taking work of the pastry.

[0026] The transmission assembly includes a transmission motor 21, a gear 22 and two racks 23. The transmission motor 21 is arranged on the base 1. The gear 22 is rotatably arranged on the base 1. The racks 23 are slidably arranged on the base 1. The two racks 23 are respectively fixedly connected to the first cutter 5 and the second cutter 6. The two racks 23 are respectively located on both sides of the gear 22, so that the first cutter 5 and the second cutter 6 can be arranged in an interlaced manner. The transmission assembly further includes a rotating disk 24, a stepping motor 25, a plug-in block 26, a transmission block 27 and a driving block 28. The output end of the stepping motor 25 is coaxially fixed to the rotating disk 24. The driving block 28 is arranged on the peripheral wall of the rotating disk 24. The end of the transmission block 27 is provided with an inclined surface. The end face of the gear 22 is provided with a plug-in groove 29. The base 1 is provided with a plug-in hole 30 through it. The plug-in block 26 is elastically arranged in the plug-in groove 29. The plug-in block 26 is connected to the inner wall of the end of the plug-in groove 29 through a spring. The plug-in block 26 is inserted into the plug-in hole 30. The transmission block 27 is slidably arranged in the plug-in hole 30. After the driving block 28 abuts against the inclined surface of the transmission block 27, the transmission block 27 is pushed into the plug-in hole 30. The axis of the rotating disk 24 and the axis of the gear 22 are arranged perpendicular to each other. The initial position between the driving block 28 and the transmission block 27 requires the driving block 28 to rotate one circle before the transmission block 27 can be driven to move into the plug-in hole 30. The stepping motor 25 controls the rotating disk 24 to rotate one-third of a circle each time.

[0027] In this embodiment, the first infrared sensor 17 and the second infrared sensor 18 are mainly used to identify the position of the pastry. First, the first infrared sensor 17 identifies the initial position and initial state of the pastry, and then controls the first cutter 5 to complete the cutting. Secondly, after the pastry is flipped, when the second infrared sensor 18 identifies the pastry, it means that the pastry has been successfully flipped. At this time, the first infrared sensor 17 does not identify the pastry, and at this time, the first cutter 5 and the second cutter 6 need to be replaced. Finally, when the pastry is pulled to the position of the first infrared sensor 17, it means that the pastry has returned to the cutting station after being flipped, and the second cutter 6 needs to cut the pastry again to complete the core extraction work. The number of turns of the rotating disk 24 in the transmission component is mainly used to identify the three states of the pastry. By triggering the rotation of the rotating disk 24 three times, and each time it rotates one-third of a turn, that is, from the initial state of the pastry to the state of completed core extraction, three different working conditions need to be triggered. Therefore, choosing the transmission component is more convenient for distinguishing the three working conditions. As long as the three cuts are carried out in an orderly manner, the core extraction work can be completed.

[0028] When the pastry has completed the first cut and is flipped, at this time the first infrared sensor 17 does not identify the pastry. At this time, the rotating disk 24 rotates one-third of a turn. When the second infrared sensor 18 is completely blocked, the second infrared sensor 18 controls the rotating disk 24 to continue rotating one-third of a turn, indicating that the pastry has been successfully flipped. At this time, it is necessary to control the flipping paper 11 to drive the flipped pastry to the position of the first infrared sensor 17. At this time, the first infrared sensor 17 is blocked again, and the first infrared sensor 17 controls the rotating disk 24 to rotate one-third of a turn again. During this process, the end of the driving block 28 contacts the end of the transmission block 27. The end of the driving block 28 can be set to be arc-shaped to facilitate its driving of the transmission block 27. The transmission block 27 completely pushes the plug-in block 26 out of the plug-in hole 30. At this time, the rotation of the gear 22 is released. By controlling the rotation of the gear 22, under the cooperation of the two racks 23, the first cutter 5 retracts and the second cutter 6 extends. Of course, after the second cut of the pastry is completed, the first cutter 5 is extended again, the first cutter 5 retracts, and then the driving block 28 is rotated to the designated position to facilitate the cutting of the next pastry.

[0029] The cutting mechanism further includes a gas supply assembly 7, a main pipe 8, a first pipe 9, and a second pipe 10. Inner cavities are provided inside both the first cutter 5 and the second cutter 6. The main pipe 8 is connected to the output end of the gas supply assembly 7. Two ends of the main pipe 8 are respectively connected to the first pipe 9 and the second pipe 10. Solenoid valves are provided on both the first pipe 9 and the second pipe 10. The gas supply assembly 7 can be arranged on the cutting frame 4. The gas supply assembly 7 selects an air pump in the prior art. A plurality of fine holes are provided on the wall surfaces of the first cutter 5 and the second cutter 6, and the fine holes are arranged facing outward. The thickness dimension of the first cutter 5 gradually decreases downward, which is convenient for cutting the pastry. After the pastry is cut, air is introduced into the first cutter 5 or the second cutter 6. Since the pastry is light in mass, the cut waste is easily blown away and away from the turning paper 11. Moreover, blowing can also minimize the waste remaining on the turning paper 11 to the greatest extent.

[0030] The collection mechanism includes a collection box 19 and a suction assembly 20. The collection box 19 is arranged on the sampling seat 3 and located outside the turning paper 11. A plurality of filter holes are provided at the bottom of the collection box 19. The suction assembly 20 is used to suck the collection box 19. The opening of the collection box 19 is flush with the upper surface of the sampling seat 3, but its depth is much lower than the surface of the sampling seat 3. The suction assembly 20 selects an air extraction pump and an air pipe. When the waste cut by the first cutter 5 or the second cutter 6 is blown, at the same time, the suction assembly 20 starts to suck the waste, so that most of the waste falls into the collection box 19 to ensure the cleanliness of the surface of the sampling seat 3.

[0031] The placement mechanism is provided with a placement table 31 slidably arranged in the sampling seat 3, a control board 32, and a control motor. The first infrared sensor 17 is arranged on the control board 32. The placement table 31 is provided with a placement groove 35 for placing the pastry core. The sampling seat 3 is provided with a sampling port 34. The control board 32 rotates at the sampling port 34. The output end of the control motor is fixedly connected to one end of the control board 32. The placement groove 35 is also located below the sampling port 34. After the pastry core is taken, at this time, the second cutter 6 shields the pastry, and the control traction roller 13 and the winding roller 14 are controlled to move until the traction rope 15 moves to the cutting position of the sampling seat 3. The pastry is located on the control board 32. At this time, the control board 32 starts to rotate until the end of the control board 32 rotates directly above the opening of the placement groove 35, and the pastry slides from the control board 32 into the placement groove 35. The sliding of the placement table 31 on the sampling seat 3 is also realized by an electric push rod. The pastry slides into the placement groove 35 of the placement table 31, and the placement table 31 transports the core of the pastry to the experimental unit for microbial detection experiments.

[0032] The traction assembly further includes a plurality of adhering members 33. The adhering members 33, the turning paper 11, and the traction rope 15 are arranged in sequence. The adhering members 33 can be a rubber roller or a silicone roller in the prior art, as long as it is ensured that the adhering members 33 adsorb the pastries remaining on the surface of the material taking seat, especially the waste residues at the positions of the first infrared sensor 17 and the second infrared sensor 18, so as to ensure the cleanliness of the sampling station.

[0033] The implementation principle of a microbial detection device according to an embodiment of the present application is as follows: When starting the sampling and detection, the winding roller 14 and the traction roller 13 can be controlled to cooperate with each other to pull the turning paper 11 to the surface of the sampling seat 3. The turning paper 11 is located on the sampling seat 3, and the pastry is placed on the sampling seat 3 through automatic picking and placing or manually, and it is ensured that the pastry is located on the first infrared sensor 17. At this time, the first cutter 5 is controlled to descend and cut the pastry to complete the first cutting. The waste materials are collected by the collection mechanism. After the cleaning is completed, the traction frame 12 is pulled upward. The vertical height of the traction roller 13 is higher than the vertical height of the winding roller 14. Therefore, one end of the turning paper 11 close to the traction roller 13 is higher than the other end, and the pastry is turned over. In this embodiment, the rising height of the traction frame 12 is controlled, so that the pastry can only be turned over once. At this time, the turning work of the pastry can be completed. The pastry blocks the second infrared sensor 18. At this time, the first cutter 5 and the second cutter 6 are replaced. At the same time, it is necessary to control the traction frame 12 to descend to the initial position, and control the traction roller 13 and the winding roller 14 to cooperate with each other to pull the pastry after the first cutting to the position of the first infrared sensor 17. The second cutter 6 descends and cuts the pastry for the second time to complete the core-taking work of the pastry.

[0034] When the pastry is cut for the first time and turned over, the first infrared sensor 17 does not recognize the pastry at this time, and the rotating disk 24 rotates one-third of a circle. When the second infrared sensor 18 is completely blocked, the second infrared sensor 18 controls the rotating disk 24 to continue rotating one-third of a circle, indicating that the pastry turning is completed. At this time, it is necessary to control the turning paper 11 to drive the turned-over pastry to move to the position of the first infrared sensor 17. At this time, the first infrared sensor 17 is blocked again, and the first infrared sensor 17 controls the rotating disk 24 to rotate one-third of a circle again. During this process, the end of the driving block 28 contacts the end of the transmission block 27. The end of the driving block 28 can be set to be arc-shaped to facilitate driving the transmission block 27. The transmission block 27 completely pulls out the inserting block 26 from the inserting hole 30. At this time, the rotation of the gear 22 is released. It is controlled to rotate the gear 22. Under the cooperation of the two racks 23, the first cutter 5 retracts and the second cutter 6 is released. Of course, after the pastry is cut for the second time, the first cutter 5 is released, the first cutter 5 retracts, and the driving block 28 is rotated to the designated position to facilitate cutting the next pastry.

[0035] After the waste cut off by the first cutting knife 5 or the second cutting knife 6 is blown, at the same time, the suction assembly 20 starts to suck the waste to make most of the waste fall into the collection box 19 to ensure the cleanliness of the surface of the sampling seat 3; after the core of the pastry is taken, at this time, the second cutting knife 6 shields the pastry, controls the movement of the traction roller 13 and the winding roller 14 until the traction rope 15 moves to the cutting position of the sampling seat 3, and the pastry is located on the control plate 32. At this time, the control plate 32 starts to rotate until the end of the control plate 32 rotates directly above the opening of the placement groove 35, and the pastry slides from the control plate 32 into the placement groove 35. The sliding of the placement table 31 on the sampling seat 3 is also realized by the electric push rod. The pastry slides into the placement groove 35 of the placement table 31, and the placement table 31 conveys the inner core of the pastry to the experimental unit for microbial detection experiments.

[0036] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A microorganism detection device, characterized in that: It comprises a base (1), a sampling unit and a test unit (2); The sampling unit comprises a sampling seat (3) arranged on the base (1), a placement mechanism arranged on the sampling seat (3), a cutting mechanism for cutting cakes, a turning mechanism for turning cakes, and a collecting mechanism for collecting waste; the placement mechanism is used to send samples into the test unit (2); The cutting mechanism comprises a cutting frame (4) which is lifted and lowered on the base (1), a first cutting knife (5) which is movably arranged on the cutting frame (4), a second cutting knife (6) which cooperates with the first cutting knife (5), and a transmission assembly which realizes the alternating movement of the first cutting knife (5) and the second cutting knife (6), wherein the first cutting knife (5) cuts four sides of the cake, and the second cutting knife (6) cuts the other four sides of the cake.

2. A microorganism detection device according to claim 1, characterized in that: The cutting mechanism further comprises an air supply assembly (7), a main pipe (8), a first pipe (9) and a second pipe (10); the first cutter (5) and the second cutter (6) are both provided with inner cavities; the main pipe (8) is connected to the output end of the air supply assembly (7); the two ends of the main pipe (8) are respectively connected to the first pipe (9) and the second pipe (10); and the first pipe (9) and the second pipe (10) are both provided with solenoid valves.

3. A microorganism detection device according to claim 1, characterized in that: The turning mechanism comprises a plurality of turning papers (11), a fulcrum column (36) which is lifted and arranged on the sampling seat (3), a traction component for traction of the turning papers (11), and an identification component for identifying whether the cake is turned over. The turning papers (11) are movably arranged on the sampling seat (3). The traction component is used to lift the turning papers (11) to achieve the effect of turning over the cake. The fulcrum column (36) is used as a fulcrum for turning over the cake after it falls above the turning papers (11). The height dimension of the fulcrum column (36) is smaller than the original thickness dimension of the cake. The fulcrum column (36) is close to the turning papers (11) and will not abut against the turning papers (11).

4. A microorganism detection device according to claim 3, characterized in that: The traction assembly comprises a traction frame (12) which is lifted and lowered on the sampling seat (3), a traction roller (13), a winding roller (14), a plurality of traction ropes (15) and two rotating motors (16); the traction roller (13) is rotatably arranged on the traction frame (12); the two rotating motors (16) are respectively used to control the traction roller (13) and the winding roller (14); a plurality of the turning papers (11) and a plurality of the traction ropes (15) are arranged at intervals; the traction ropes (15) are connected to the turning papers (11); the traction ropes (15) at both ends are respectively fixedly connected to the outer walls of the traction roller (13) and the winding roller (14); and when the traction frame (12) rises, the cakes begin to turn over when they abut against the fulcrum column (36).

5. A microorganism detection device according to claim 4, characterized in that: The identification component comprises a first infrared sensor (17) and a second infrared sensor (18), wherein the first infrared sensor (17) is arranged at the center of the sampling seat (3), and the second infrared sensor (18) is arranged at a position after the cake is turned over, the turning paper (11) is transparent, the second infrared sensor (18) controls the lifting and lowering of the traction frame (12), and the first infrared sensor (17) is electrically connected to the rotating motor (16) of the traction roller (13).

6. A microorganism detection device according to claim 5, characterized in that: The collection mechanism comprises a collection frame (19) and a suction assembly (20); the collection frame (19) is arranged on the sampling seat (3) and is located outside the turning paper (11); a plurality of filter holes are arranged at the bottom of the collection frame (19); and the suction assembly (20) is used for suctioning the collection frame (19).

7. A microorganism detection device according to claim 5, characterized in that: The transmission assembly comprises a transmission motor (21), a gear (22) and two racks (23); the transmission motor (21) is arranged on the base (1); the gear (22) is rotatably arranged on the base (1); the racks (23) are slidably arranged on the base (1); the two racks (23) are respectively fixedly connected to the first cutter (5) and the second cutter (6); the transmission assembly also comprises a rotating disk (24), a stepping motor (25), a plug-in block (26), a transmission block (27) and a driving block (28); the output end of the stepping motor (25) is connected to the rotating disk (24) ) are coaxially fixed, the driving block (28) is arranged on the peripheral wall of the rotating disk (24), the end of the transmission block (27) is provided with an inclined surface, the gear (22) is provided with a plug-in groove (29), the base (1) is provided with a plug-in hole (30), the plug-in block (26) is elastically arranged in the plug-in groove (29), the plug-in block (26) is plugged into the plug-in hole (30), the transmission block (27) is slidably arranged in the plug-in hole (30), and the driving block (28) abuts against the inclined surface of the transmission block (27) to push the transmission block (27) into the plug-in hole (30).

8. A microorganism detection device according to claim 7, characterized in that: The placement mechanism is provided with a placement table (31) slidably arranged in the sampling seat (3), a control board (32) and a control motor, the first infrared sensor (17) is arranged on the control board (32), the placement table (31) is provided with a placement groove (35) for placing the cake core, the sampling seat (3) is provided with a sampling port (34), the control board (32) is rotated with the sampling port (34), and the output end of the control motor is fixedly connected to one end of the control board (32).

9. A microorganism detection device according to claim 7, characterized in that: The traction assembly also includes a plurality of adhesive members (33), and the adhesive members (33), the turning paper (11) and the traction rope (15) are arranged in sequence.

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