Dairy product allergen detection equipment and detection method

Abstract

The invention relates to the technical field of dairy product detection, in particular to dairy product allergen detection equipment and method, and the detection equipment comprises a rack, a sampling device and a negative pressure mechanism; the two sides of the rack are each provided with a movable frame capable of ascending and descending, a transverse rod is arranged on each movable frame, the two movable frames are connected through the transverse rod, and a mounting base is arranged on each transverse rod; the rack is provided with a first linear driver used for driving the movable frame to ascend and descend. The sampling device comprises a sampling box and a sampling tube, the sampling box is arranged on the mounting seat, and the sampling tube is arranged on the sampling box; the negative pressure mechanism is arranged on the sampling box and is used for providing negative pressure for the sampling tube. According to the invention, the function of sampling and detecting dairy products is realized, and through the arrangement of the sampling box and the sampling tube, a sample is sucked and stored by utilizing negative pressure, so that the sampling amount is accurately controlled. The problem that a sample is polluted by residual impurities on the inner wall of a pipeline in the sampling process is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of dairy product detection, and in particular to a dairy product allergen detection device and a detection method. Background Art

[0002] After food processing, in order to ensure the safety of food, it is necessary to conduct a comprehensive inspection of the food. When sampling and testing, food testing equipment needs to ensure the sampling volume and protection of samples to avoid sample contamination and affect the detection accuracy. Allergen testing for dairy products themselves is mainly to ensure that dairy products do not contain or only contain very low amounts of specific allergens, thereby meeting the safety needs of people who are allergic to dairy products. However, when existing testing equipment is sampling, it is difficult to ensure that samples are not contaminated, resulting in a large amount of invalid test data, affecting the test accuracy.

[0003] To this end, Chinese patent CN118275155B discloses an allergen detection device and method for a poultry product processing workshop, which controls the collection roller to rotate in the same direction as the conveyor belt and drives the scraper teeth to scrape the residue samples on the surface of the conveyor belt, thereby improving the sample collection efficiency by scraping. Subsequently, the sample on the surface of the scraper tooth plate is brushed off with a brush, and then the sample is sucked in by the suction of the feed pipe, so that the sample outside the collection roller can be completely collected and stored, thereby improving the accuracy of later allergen detection.

[0004] However, when testing dairy products, some dairy products are in liquid form. During the sampling process, the sample is exposed to the air and will be contaminated by contact with impurities in the air. In addition, when sampling, pipes are usually used for sample absorption and sample transmission. After the sample passes through the pipe, some dairy products will remain on the inner wall of the pipe. When sampling again, the sample may be contaminated, affecting the detection accuracy. Summary of the invention

[0005] In view of the above problems, a dairy product allergen detection device and detection method are provided, which solve the problem that the sample may be contaminated by impurities remaining on the inner wall of the pipeline during the sampling process through a rack, a sampling device and a negative pressure mechanism.

[0006] In order to solve the problems of the prior art, the present invention provides a milk product allergen detection device, comprising a frame, a sampling device and a negative pressure mechanism; a movable frame that can be raised and lowered is respectively provided on both sides of the frame, a cross bar is provided on the movable frame, and the two movable frames are connected by the cross bar, and a mounting seat is provided on the cross bar; a first linear driver for driving the movable frame to rise and fall is provided on the frame; the sampling device comprises a sampling box and a sampling tube, the sampling box is arranged on the mounting seat, and the sampling tube is arranged on the sampling box; the negative pressure mechanism is arranged on the sampling box, and the negative pressure mechanism is used to provide negative pressure for the sampling tube, and in a working state, when the sampling tube is extended into the milk product and the negative pressure mechanism generates negative pressure in the sampling box, there is an air pressure difference at both ends of the sampling tube, and the sampling tube sucks the milk product into the sampling box.

[0007] Preferably, the sampling box is hollow and a partition is provided in the inner cavity of the sampling box, which separates a negative pressure chamber and a storage chamber in the inner cavity of the sampling box; the negative pressure mechanism is used to regulate the air pressure in the negative pressure chamber, and one end of the sampling tube is connected to the negative pressure chamber; the sampling box is provided with a first linear drive component for controlling the extension and retraction of the sampling tube, and the sampling tube is located in the storage chamber when it is in a contracted state.

[0008] Preferably, the negative pressure mechanism includes a piston plate and a lifting assembly; the piston plate can be raised and lowered in the negative pressure chamber of the sampling box, and the piston plate is slidably matched with the inner wall of the negative pressure chamber; the lifting assembly is arranged on the sampling box, and the lifting assembly is used to control the lifting of the piston plate.

[0009] Preferably, the first linear drive assembly includes a second linear drive, a cross plate and a guide rod; the second linear drive is arranged on the sampling box, and the driving end of the second linear drive is connected to the cross plate; the cross plate is connected to the sampling tube; the guide rod is arranged on the cross plate, and the guide rod is slidably matched with the partition; and an avoidance groove for the cross plate to be raised and lowered is provided on the mounting seat.

[0010] Preferably, the lifting assembly includes a first rotary driver, a first screw and a bevel gear; the first rotary driver is arranged on a mounting seat; the first screw is rotatably arranged on the mounting seat, and a threaded cylinder threadedly connected to the first screw is installed on the piston plate; two bevel gears are provided, and the two bevel gears are respectively sleeved on the driving end of the first rotary driver and the first screw, and the two bevel gears are meshed and connected.

[0011] Preferably, the bottom of the sampling box is provided with a bottom plate, and two first through holes are opened on the bottom plate; the bottom of the sampling box is provided with a closing plate slidably matched with the bottom plate, and two second through holes are opened on the closing plate; in a working state, when the closing plate is in a closed state, the two second through holes on the closing plate are misaligned with the two first through holes on the bottom plate, and when the closing plate is in an open state, the two second through holes on the closing plate coincide with the two first through holes on the bottom plate respectively.

[0012] Preferably, a first magnetic block and a second magnetic block are respectively provided on the bottom plate and the closing plate; at least one of the first magnetic block and the second magnetic block is an electromagnet; a return spring is provided on the closing plate, and both ends of the return spring are respectively connected to the closing plate and the bottom plate; in a working state, when the closing plate is in a closed state, the first magnetic block and the second magnetic block are attracted to each other, and the return spring is in an extended state.

[0013] Preferably, a third through hole for the sampling tube to pass through is opened on the piston plate, and sealing rings are provided at both upper and lower ends of the third through hole.

[0014] Preferably, a transmission belt is provided on the frame, a test tube for holding samples is installed on the transmission belt, and a third magnetic block is provided on the test tube; a metal strip that can be adsorbed by the third magnetic block is provided on the closing plate; a second linear drive component for controlling the mounting seat to slide along the transverse plate is provided on the movable frame; the second linear drive component includes a second rotary driver and a second screw, the second rotary driver is installed on the movable frame, the second screw is rotatably arranged on the movable frame, the driving end of the second rotary driver is transmission-connected to the second screw, and the second screw is threadedly connected to the mounting seat.

[0015] A method for detecting milk product allergens comprises the following steps: S1. First install the test tube on the sampling box, and then insert the sampling tube into the dairy product; S2. Start the negative pressure mechanism, suck the sample into the sampling box through the sampling tube, and transfer the sample to the test tube through the other end of the sampling tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the function of sampling and testing dairy products through a frame, a sampling device and a negative pressure mechanism, and through the arrangement of a sampling box and a sampling tube, utilizes negative pressure to absorb and preserve samples, and accurately controls the sampling volume. When cleaning, the cleaning liquid is absorbed through the sampling tube to clean the tube mouth and the inner wall of the pipe. It can prevent the sample from being contaminated by impurities on the inner wall of the pipe during sampling, and can both accurately sample and quickly clean the sampling tube. Thereby improving the detection accuracy. It solves the problem that the sample will be contaminated by impurities remaining on the inner wall of the pipe during the sampling process.

[0017] 2. The present invention realizes the telescopic function of the sampling tube through the partition, the negative pressure chamber and the storage chamber. After the sampling is completed, the sampling tube can be stored in the storage chamber, so as to protect and clean the sampling tube. When the sampling tube is not in operation, the first linear drive component drives the sampling tube to shrink, and the sampling tube is stored in the storage chamber of the sampling box to prevent the sampling tube from being exposed to the air, and further prevent the sampling tube from being contaminated. When cleaning the sampling tube, the first linear drive component is used to control the sampling tube to extend, and then the negative pressure provided by the negative pressure mechanism is used to absorb the cleaning liquid, so that the cleaning liquid flows into the inner cavity of the sampling box. Then, the first linear drive component is used to control the sampling tube to shrink, and then the cleaning liquid is controlled to flow into the storage chamber, so that the sampling tube is soaked and cleaned as a whole.

[0018] 3. The present invention realizes the function of adjusting the air pressure in the negative pressure chamber through the piston plate and the lifting assembly, so as to achieve the effect of using the sampling tube to absorb the sample and the cleaning liquid. When the first linear drive drives the movable frame to move downward, the controller sends a signal to the second linear drive, and the second linear drive assembly drives the horizontal plate to move downward, and the horizontal plate drives the sampling tube to move downward. In this process, the lifting and lowering of the horizontal plate is guided by the guide rod, so that the sampling tube extends out of the storage chamber for subsequent sampling actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of a milk product allergen detection device of the present invention.

[0020] Figure 2 It is a three-dimensional schematic diagram of a sampling device in a milk product allergen detection device of the present invention.

[0021] Figure 3 It is a three-dimensional schematic diagram of a sampling device in a milk product allergen detection device of the present invention when a sampling tube is in an extended state.

[0022] Figure 4 It is a three-dimensional schematic diagram of a partition and a first linear drive component in a milk product allergen detection device of the present invention.

[0023] Figure 5 It is a three-dimensional schematic diagram of a sampling device in a milk product allergen detection device of the present invention when a sampling tube is in a contracted state.

[0024] Figure 6 It is a three-dimensional schematic diagram of the cooperation between a sealing plate and a sampling box in a milk product allergen detection device of the present invention.

[0025] Figure 7 It is a three-dimensional exploded schematic diagram of a bottom plate and a closing plate in a milk product allergen detection device of the present invention.

[0026] Figure 8It is a three-dimensional schematic diagram of a frame, a transmission belt, a containing box and a test tube in a milk product allergen detection device of the present invention.

[0027] Fig. 9 The present invention Figure 8 A local enlarged schematic diagram of point A in the middle.

[0028] Fig.10 It is a three-dimensional schematic diagram of a movable frame and a second linear drive component in a milk product allergen detection device of the present invention.

[0029] The numbers in the figure are: 1, frame; 11, movable frame; 111, cross bar; 112, mounting seat; 12, first linear drive; 13, second linear drive assembly; 131, second rotary drive; 132, second screw; 14, transmission belt; 2, sampling device; 21, sampling box; 211, partition; 212, negative pressure chamber; 213, storage chamber; 214, bottom plate; 2141, first through hole; 215, first magnetic block; 22, sampling tube; 23, first linear Driving assembly; 231, second linear drive; 232, horizontal plate; 233, guide rod; 24, closing plate; 241, second through hole; 242, second magnetic block; 243, reset spring; 3, negative pressure mechanism; 31, piston plate; 311, threaded cylinder; 312, third through hole; 313, sealing ring; 32, lifting assembly; 321, first rotary drive; 322, first screw; 323, bevel gear; 4, containing box; 5, test tube; 51, third magnetic block. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Reference Figure 1-Figure 3 A dairy product allergen detection device comprises a frame 1, a sampling device 2 and a negative pressure mechanism 3; a movable frame 11 capable of lifting and lowering is respectively provided on both sides of the frame 1, a cross bar 111 is provided on the movable frame 11, and the two movable frames 11 are connected by the cross bar 111, and a mounting seat 112 is provided on the cross bar 111; a first linear drive 12 for driving the movable frame 11 to lift and lower is provided on the frame 1; the sampling device 2 comprises a sampling box 21 and a sampling tube 22, the sampling box 21 is arranged on the mounting seat 112, and the sampling tube 22 is arranged on the sampling box 21; the negative pressure mechanism 3 is arranged on the sampling box 21, and the negative pressure mechanism 3 is used to provide negative pressure for the sampling tube 22, in the working state, when the sampling tube 22 is extended into the dairy product and the negative pressure mechanism 3 generates negative pressure in the sampling box 21, there is an air pressure difference at both ends of the sampling tube 22, and the sampling tube 22 sucks the dairy product into the sampling box 21.

[0032] The present invention realizes the function of sampling and testing dairy products through a frame 1, a sampling device 2 and a negative pressure mechanism 3, and through the arrangement of a sampling box 21 and a sampling tube 22, a negative pressure is used to absorb and preserve samples, and the sampling amount is accurately controlled. A holding box 4 for holding dairy products is provided on the frame 1, and a test tube 5 is arranged on the sampling box 21. When cleaning, a cleaning liquid is absorbed through the sampling tube 22 to clean the pipe mouth and the inner wall of the pipe of the sampling tube 22. It can prevent the sample from being contaminated by impurities on the inner wall of the pipe during sampling, and can not only perform accurate sampling, but also quickly clean the sampling tube 22, thereby improving the detection accuracy. The problem that the sample will be contaminated by impurities remaining on the inner wall of the pipe during the sampling process is solved. A controller for human-computer interaction is provided on the frame 1, and the first linear drive 12 is electrically connected to the controller. In the working state, when sampling, the operator sends a signal to the first linear drive 12 through the controller. After receiving the signal, the first linear drive 12 drives the movable frame 11 to move downward until the sampling tube 22 extends into the dairy product in the receiving box 4, and the negative pressure mechanism 3 provides negative pressure for the sampling tube 22. Then, the dairy product in the receiving box 4 is sucked into the sampling box 21 through the sampling tube 22, and the pressure difference and adsorption time provided by the negative pressure mechanism 3 are controlled to stably control the sample adsorption amount. After completing the sampling, the operator moves the sampling tube 22 to the cleaning position, and then absorbs the cleaning liquid through the sampling tube 22 and the negative pressure mechanism 3, and sucks the cleaning liquid into the sampling box 21, and soaks and cleans the inside of the sampling box 21. After the cleaning is completed, the cleaning liquid is discharged.

[0033] Reference Figure 1-Figure 3 The sampling box 21 is hollow, and a partition 211 is provided in the inner cavity of the sampling box 21, and the partition 211 separates a negative pressure chamber 212 and a storage chamber 213 in the inner cavity of the sampling box 21; the negative pressure mechanism 3 is used to regulate the air pressure in the negative pressure chamber 212, and one end of the sampling tube 22 is connected to the negative pressure chamber 212; the sampling box 21 is provided with a first linear drive component 23 for controlling the extension and retraction of the sampling tube 22, and the sampling tube 22 is located in the storage chamber 213 when it is in a contracted state.

[0034] The present invention realizes the telescopic function of the sampling tube 22 through the partition 211, the negative pressure chamber 212 and the storage chamber 213. After the sampling is completed, the sampling tube 22 can be stored in the storage chamber 213, so as to protect and clean the sampling tube 22. The first linear drive component 23 is electrically connected to the controller. When the sampling tube 22 is in an extended state, one end of the sampling tube 22 connected to the negative pressure chamber 212 extends into the mouth of the test tube 5. When the sampling tube 22 is not in operation, the sampling tube 22 is driven to shrink by the first linear drive component 23, and the sampling tube 22 is stored in the storage chamber 213 of the sampling box 21, so as to avoid the sampling tube 22 from being exposed to the air, and further avoid the sampling tube 22 from being contaminated. When cleaning the sampling tube 22, the sampling tube 22 is first controlled to extend through the first linear drive component 23, and then the cleaning liquid is sucked by the negative pressure provided by the negative pressure mechanism 3, so that the cleaning liquid flows into the inner cavity of the sampling box 21. Then, the first linear drive assembly 23 is used to control the sampling tube 22 to contract, and the cleaning liquid is controlled to flow into the storage cavity 213 to perform soaking and cleaning on the sampling tube 22 as a whole.

[0035] Reference Figure 1-Figure 3 : The negative pressure mechanism 3 includes a piston plate 31 and a lifting assembly 32; the piston plate 31 is arranged in the negative pressure chamber 212 of the sampling box 21 so as to be liftable, and the piston plate 31 is slidably matched with the inner wall of the negative pressure chamber 212; the lifting assembly 32 is arranged on the sampling box 21, and the lifting assembly 32 is used to control the lifting of the piston plate 31.

[0036] The present invention realizes the function of adjusting the air pressure in the negative pressure chamber 212 through the piston plate 31 and the lifting assembly 32, so as to achieve the effect of using the sampling tube 22 to absorb the sample and the cleaning liquid. When sampling, the operator first controls the movable frame 11 to move downward through the first linear drive 12, and the movable frame 11 drives the mounting seat 112 and the sampling box 21 to move, and at the same time controls the sampling tube 22 to be in an extended state through the first linear drive assembly 23. When the sampling tube 22 extends into the dairy product in the receiving box 4, the lifting assembly 32 controls the piston plate 31 to move upward, and the lower part of the cavity of the piston plate 31 is connected to the sampling tube 22. As the piston plate 31 moves upward, the volume of the cavity in the lower part of the piston plate 31 increases, and the air pressure decreases. Under the action of the air pressure difference, the dairy product in the receiving box 4 is sucked into the test tube 5 connected to the negative pressure chamber 212, and the sampling operation is completed. When cleaning the sampling box 21, the cleaning liquid is first sucked into the negative pressure chamber 212 through the sampling tube 22, and then the sampling tube 22 is controlled to retract through the first linear drive component 23. Then, the piston plate 31 is driven downward by the lifting component 32. The piston plate 31 pushes the cleaning liquid in the negative pressure chamber 212 into the storage chamber 213 through the sampling tube 22, and then the sampling tube 22 is immersed and cleaned as a whole with the cleaning liquid.

[0037] Reference Figure 3 and Figure 4: The first linear drive assembly 23 includes a second linear drive 231, a transverse plate 232 and a guide rod 233; the second linear drive 231 is arranged on the sampling box 21, and the driving end of the second linear drive 231 is connected to the transverse plate 232; the transverse plate 232 is connected to the sampling tube 22; the guide rod 233 is arranged on the transverse plate 232, and the guide rod 233 is slidably matched with the partition 211; the mounting seat 112 is provided with an avoidance groove for the lifting and lowering of the transverse plate 232.

[0038] The present invention realizes the function of driving the sampling tube 22 to extend and retract through the second linear driver 231, the cross plate 232 and the guide rod 233. The second linear driver 231 is preferably a micro servo motor, and the second linear driver 231 is electrically connected to the controller. The top of the sampling box 21 is provided with a long groove for the cross plate 232 to enter and exit, and the guide rod 233 abuts against the groove wall of the long groove. The negative pressure chamber 212 and the storage chamber 213 are isolated by the arrangement of the guide rod 233 and the partition 211. When the first linear driver 12 drives the movable frame 11 to move downward, the controller sends a signal to the second linear driver 231, and the second linear drive assembly 13 drives the cross plate 232 to move downward, and the cross plate 232 drives the sampling tube 22 to move downward. In this process, the lifting and lowering of the cross plate 232 is guided by the guide rod 233, so that the sampling tube 22 extends out of the storage chamber 213 to perform subsequent sampling actions.

[0039] Reference Figure 2 , Figure 3 and Figure 5 : The lifting assembly 32 includes a first rotary driver 321, a first screw rod 322 and a bevel gear 323; the first rotary driver 321 is arranged on the mounting seat 112; the first screw rod 322 is rotatably arranged on the mounting seat 112, and a threaded cylinder 311 threadedly connected to the first screw rod 322 is installed on the piston plate 31; two bevel gears 323 are provided, and the two bevel gears 323 are respectively sleeved on the driving end of the first rotary driver 321 and the first screw rod 322, and the two bevel gears 323 are meshed and connected.

[0040] The present invention realizes the function of driving the piston plate 31 to rise and fall through the first rotary driver 321, the first screw 322 and the bevel gear 323. The first rotary driver 321 is preferably a servo motor, and the first rotary driver 321 is electrically connected to the controller. During the sampling process, the controller sends a signal to the first linear driver 12, and the first linear driver 12 drives the movable frame 11 to move downward after receiving the signal, and at the same time, the second linear driver 231 controls the horizontal plate 232 to move downward, and the horizontal plate 232 drives the sampling tube 22 to move, so that the sampling tube 22 is in an extended state. When the extended part of the sampling tube 22 extends into the dairy product in the container box 4, the controller sends a signal to the first rotary driver 321, and the first rotary driver 321 drives the first screw 322 to rotate through the bevel gear 323 after receiving the signal, and the first screw 322 drives the threaded barrel 311 threadedly connected thereto to rise and fall, and the threaded barrel 311 drives the piston plate 31 to move synchronously, and then the pressure difference at both ends of the sampling tube 22 is controlled by the lifting and lowering of the piston plate 31, and the sample is sucked.

[0041] Reference Figure 6 and Figure 7 : A bottom plate 214 is provided at the bottom of the sampling box 21, and two first through holes 2141 are provided on the bottom plate 214; a closing plate 24 slidably matched with the bottom plate 214 is provided at the bottom of the sampling box 21, and two second through holes 241 are provided on the closing plate 24; in a working state, when the closing plate 24 is in a closed state, the two second through holes 241 on the closing plate 24 are misaligned with the two first through holes 2141 on the bottom plate 214, and when the closing plate 24 is in an open state, the two second through holes 241 on the closing plate 24 coincide with the two first through holes 2141 on the bottom plate 214, respectively.

[0042] The present invention realizes the sealing function of the bottom of the storage chamber 213 and the negative pressure chamber 212 through the closing plate 24 and the bottom plate 214, and can improve the sealing of the negative pressure chamber 212 and the storage chamber 213 while maintaining the telescopic function of the sampling tube 22. When sampling, the operator first slides the closing plate 24 so that the closing plate 24 is in an open state. At this time, the two first through holes 2141 overlap with the two second through holes 241 respectively. Then the operator installs the test tube 5 on the closing plate 24, and makes the open end of the test tube 5 extend into the negative pressure chamber 212 through the second through hole 241 and the first through hole 2141. Then the controller sends a signal to the second linear driver 231, and the second linear driver 231 drives the horizontal plate 232 to move downward, and the horizontal plate 232 drives the sampling tube 22 to move downward. One end of the sampling tube 22 located in the storage chamber 213 passes through the first through hole 2141 and the second through hole 241 in sequence until it extends out of the sampling box 21. At this time, one end of the sampling tube 22 located in the negative pressure chamber 212 extends into the tube opening of the test tube 5 .

[0043] Reference Figure 6 and Figure 7: The bottom plate 214 and the closing plate 24 are respectively provided with a first magnetic block 215 and a second magnetic block 242; at least one of the first magnetic block 215 and the second magnetic block 242 is an electromagnet; the closing plate 24 is provided with a return spring 243, and the two ends of the return spring 243 are respectively connected to the closing plate 24 and the bottom plate 214; in the working state, when the closing plate 24 is in the closed state, the first magnetic block 215 and the second magnetic block 242 are attracted to each other, and the return spring 243 is in an extended state.

[0044] The present invention realizes the function of switching the closed state of the closed plate 24 through the first magnetic block 215, the second magnetic block 242 and the reset spring 243. The first magnetic block 215 is an electromagnet, and the first magnetic block 215 is electrically connected to the controller. When the closed plate 24 is in a closed state, both ends of the reset spring 243 have a pulling force on the closed plate 24 and the bottom plate 214. When sampling, the controller cuts off the power of the first magnetic block 215, and the first magnetic block 215 no longer has magnetism after being powered off. The closed plate 24 is reset under the elastic force of the reset spring 243, thereby separating the first magnetic block 215 and the second magnetic block 242, and the two first through holes 2141 are aligned with the two second through holes 241 respectively. Then the controller sends a signal to the second linear driver 231, and the second linear driver 231 drives the cross plate 232 to move downward, so that the sampling tube 22 extends out of the sampling box 21 through the first through hole 2141 and the second through hole 241.

[0045] Reference Figure 5 A third through hole 312 is formed on the piston plate 31 for the sampling tube 22 to pass through, and sealing rings 313 are provided at both upper and lower ends of the third through hole 312 .

[0046] When cleaning the sampling box 21, the controller sends a signal to the second linear driver 231, and the second linear driver 231 drives the horizontal plate 232 to move downward, so that the sampling tube 22 is in an extended state. Then, the operator moves the container containing the cleaning liquid to the sampling box 21, and makes the extended part of the sampling tube 22 extend into the cleaning liquid. Then the controller sends a signal to the first rotary driver 321, and the first rotary driver 321 drives the first screw 322 to rotate through the bevel gear 323, and the first screw 322 drives the threaded barrel 311 and the piston plate 31 to move upward, so that the cleaning liquid is sucked into the sampling box 21. The sealing performance of the piston plate 31 is improved by the cooperation of the sealing ring 313 and the sampling tube 22.

[0047] Reference Figure 8-Figure 10: The frame 1 is provided with a transmission belt 14, on which a test tube 5 for holding a sample is installed, and the test tube 5 is provided with a third magnetic block 51; the closing plate 24 is provided with a metal strip that can be adsorbed by the third magnetic block 51; the movable frame 11 is provided with a second linear drive assembly 13 for controlling the mounting seat 112 to slide along the transverse plate 232; the second linear drive assembly 13 includes a second rotary driver 131 and a second screw 132, the second rotary driver 131 is installed on the movable frame 11, the second screw 132 is rotatably arranged on the movable frame 11, the driving end of the second rotary driver 131 is transmission-connected to the second screw 132, and the second screw 132 is threadedly connected to the mounting seat 112.

[0048] The present invention realizes the function of driving the mounting seat 112 to move along the cross bar 111 through the third magnetic block 51, the transmission belt 14 and the second linear drive assembly 13, and then realizes the function of automatically taking and placing the test tube 5 in cooperation with the transmission belt 14. The axis of the second screw 132 is parallel to the extension direction of the cross bar 111. The closing plate 24 is provided with a snap-in groove for plugging and matching with the third magnetic block 51. The metal strip on the closing plate 24 is arranged in the snap-in groove, and the third magnetic block 51 is preferably an electromagnet. Through the plug-in matching of the magnetic block and the snap-in groove, the sealing of the connection between the test tube 5 and the closing plate 24 is further improved, thereby preventing the leakage of dairy products from the connection. Before sampling, the operator first sends a signal to the second rotary driver 131 through the controller, and the second rotary driver 131 drives the second screw 132 to rotate, and the second screw 132 drives the mounting seat 112 threadedly connected thereto to move along the crossbar 111, and the mounting seat 112 drives the sampling box 21 and the sampling tube 22 to move, so that the sampling tube 22 moves to the transmission belt 14. Then, the first linear driver 12 controls the movable frame 11 to move downward until the clamping groove on the closing plate 24 is plugged into the third magnetic block 51 on the test tube 5, and at the same time, the controller energizes the third magnetic block 51, and then the test tube 5 is tightly matched with the closing plate 24 through magnetic force.

[0049] Reference Figure 1-Figure 5 :A method for detecting milk product allergens, comprising the following steps: S1, first install the test tube 5 on the sampling box 21, and then insert the sampling tube 22 into the dairy product; S2, start the negative pressure mechanism 3, suck the sampling box 21 through the sampling tube 22, and transfer the sample to the test tube 5 through the other end of the sampling tube 22.

[0050] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A milk product allergen detection device, characterized in that: It comprises a frame (1), a sampling device (2) and a negative pressure mechanism (3); A movable frame (11) capable of being raised and lowered is respectively provided on both sides of the frame (1), a cross bar (111) is provided on the movable frame (11), and the two movable frames (11) are connected via the cross bar (111), and a mounting seat (112) is movably provided on the cross bar (111); A first linear drive (12) is provided on the frame (1), and the first linear drive (12) is used to drive the movable frame (11) to rise and fall; The sampling device (2) comprises a sampling box (21) and a sampling tube (22); the sampling box (21) is arranged on a mounting seat (112), and the sampling tube (22) is arranged on the sampling box (21); The negative pressure mechanism (3) is arranged on the sampling box (21), and the negative pressure mechanism (3) is in communication with the sampling tube (22); In the working state, when the sampling tube (22) extends into the dairy product and the negative pressure mechanism (3) generates negative pressure in the sampling box (21), there is an air pressure difference between the two ends of the sampling tube (22), and the sampling tube (22) sucks the dairy product into the sampling box (21).

2. A milk product allergen detection device according to claim 1, characterized in that: The sampling box (21) is hollow, and a partition (211) is provided in the inner cavity of the sampling box (21), and the partition (211) separates the inner cavity of the sampling box (21) into a negative pressure cavity (212) and a storage cavity (213); The negative pressure mechanism (3) is used to regulate the air pressure in the negative pressure chamber (212); one end of the sampling tube (22) is in communication with the negative pressure chamber (212); The sampling box (21) is provided with a first linear drive component (23) for controlling the extension and retraction of the sampling tube (22), and is located in the storage cavity (213) when the sampling tube (22) is in a retracted state.

3. A milk product allergen detection device according to claim 2, characterized in that: The negative pressure mechanism (3) comprises a piston plate (31) and a lifting assembly (32); The piston plate (31) is arranged in a liftable manner in the negative pressure chamber (212) of the sampling box (21), and the piston plate (31) is slidably matched with the inner wall of the negative pressure chamber (212); The lifting component (32) is arranged on the sampling box (21), and the lifting component (32) is used to control the lifting of the piston plate (31).

4. A milk product allergen detection device according to claim 3, characterized in that: The first linear drive assembly (23) comprises a second linear drive (231), a transverse plate (232) and a guide rod (233); The second linear driver (231) is arranged on the sampling box (21), and the driving end of the second linear driver (231) is connected to the transverse plate (232); The horizontal plate (232) is connected to the sampling tube (22); The guide rod (233) is arranged on the transverse plate (232), and the guide rod (233) is slidably matched with the partition plate (211); The mounting seat (112) is provided with an avoidance groove for the horizontal plate (232) to be raised and lowered.

5. The milk product allergen detection device according to claim 3, characterized in that: The lifting assembly (32) comprises a first rotary driver (321), a first screw rod (322) and a bevel gear (323); The first rotary driver (321) is arranged on the mounting seat (112); The first screw rod (322) is rotatably mounted on the mounting seat (112), and a threaded barrel (311) threadably connected to the first screw rod (322) is mounted on the piston plate (31); Two bevel gears (323) are provided, and the two bevel gears (323) are respectively sleeved on the driving end of the first rotation driver (321) and the first screw rod (322), and the two bevel gears (323) are meshedly connected.

6. The milk product allergen detection device according to claim 2, characterized in that: A bottom plate (214) is provided at the bottom of the sampling box (21), and two first through holes (2141) are provided on the bottom plate (214); A closing plate (24) slidably matched with the bottom plate (214) is provided at the bottom of the sampling box (21), and two second through holes (241) are formed on the closing plate (24); In a working state, when the closing plate (24) is in a closed state, the two second through holes (241) on the closing plate (24) are misaligned with the two first through holes (2141) on the bottom plate (214); when the closing plate (24) is in an open state, the two second through holes (241) on the closing plate (24) respectively overlap with the two first through holes (2141) on the bottom plate (214).

7. A milk product allergen detection device according to claim 6, characterized in that: A first magnetic attraction block (215) and a second magnetic attraction block (242) are respectively provided on the bottom plate (214) and the closing plate (24); At least one of the first magnetic attraction block (215) and the second magnetic attraction block (242) is an electromagnet; A return spring (243) is provided on the closing plate (24), and two ends of the return spring (243) are respectively connected to the closing plate (24) and the bottom plate (214); In the working state, when the closing plate (24) is in the closed state, the first magnetic attraction block (215) and the second magnetic attraction block (242) are attracted to each other, and the return spring (243) is in an extended state.

8. The milk product allergen detection device according to claim 5, characterized in that: The piston plate (31) is provided with a third through hole (312) for the sampling tube (22) to pass through, and sealing rings (313) are provided at both upper and lower ends of the third through hole (312).

9. The milk product allergen detection device according to claim 6, characterized in that: A transmission belt (14) is provided on the frame (1), a test tube (5) for holding a sample is mounted on the transmission belt (14), and a third magnetic attraction block (51) is provided on the test tube (5); The closing plate (24) is provided with a metal strip capable of being attracted to the third magnetic attraction block (51); The movable frame (11) is provided with a second linear drive assembly (13) for controlling the mounting seat (112) to slide along the transverse plate (232); The second linear drive assembly (13) comprises a second rotary driver (131) and a second screw (132); the second rotary driver (131) is mounted on the movable frame (11); the second screw (132) is rotatably disposed on the movable frame (11); a driving end of the second rotary driver (131) is transmission-connected to the second screw (132); and the second screw (132) is threadedly connected to the mounting seat (112).

10. A method for detecting milk product allergens, using a milk product allergen detection device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, first install the test tube (5) on the sampling box (21), and then insert the sampling tube (22) into the dairy product; S2, starting the negative pressure mechanism (3), sucking the sample box (21) through the sampling tube (22), and transferring the sample to the test tube (5) through the other end of the sampling tube (22).

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