Full-automatic food pesticide residue detection device

Abstract

The invention relates to the technical field of pesticide detection, in particular to a full-automatic detection device for food pesticide residues, and solves the problems that when the full-automatic detection device for the food pesticide residues is used, food leaves need to be manually added into a test tube, a water source is added, and the test tube is manually shaken; and when the equipment is opened, hot air which is positioned in the equipment and is used for catalyzing the dissolving of the pesticide and the reagent can be dissipated to the outside. Comprising a pesticide residue tachymeter main body. Through the full-automatic high-precision pesticide residue detection mechanism, pesticide components adsorbed on the outer surfaces of vegetable slices for detection can be automatically flushed by a rotating water source, and meanwhile, through the heat source recycling mechanism, hot air in an operation cavity can be extracted and sealed into a piston groove before the operation cavity is opened; according to the technical scheme, the pesticide extraction efficiency is improved, meanwhile, the problem of heat loss in the starting process of traditional equipment is solved, energy saving and high efficiency are achieved, and the detection precision and efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pesticide detection, in particular to a fully automatic detection device for pesticide residues in food. Background Art

[0002] A food pesticide residue detection device is a special device used to detect pesticide residues in food. Its main function is to conduct qualitative or quantitative analysis of pesticide components in food samples through physical, chemical or biological means to determine whether they meet national or international safety standards. Some existing food pesticide residue detection devices use a fully automatic reagent adding mechanism to automatically add various reagents to the water source containing pesticide components inside the device, and use a temperature control mechanism to adjust the temperature inside the device to 30 to 40 degrees to automatically complete the addition and catalysis operations of multiple reagents. This food pesticide residue detection device that can automatically add reagents and adjust the temperature inside the device can be called a fully automatic food pesticide residue detection device.

[0003] However, when using this fully automatic detection device for pesticide residues in food, it is necessary to manually add food leaves to the inside of the test tube and add water to manually shake it to extract the pesticides originally adsorbed on the surface of the food. This process is relatively cumbersome and has a low degree of automation. In addition, if the pesticide components are extracted by shaking alone, the extraction efficiency is low, which may cause some pesticide residues to be unable to be completely dissolved, thereby affecting the accuracy of the test results. In addition, each time the device is used and opened, the heat inside it used to catalyze the dissolution of pesticides and reagents will dissipate to the outside world, which will eventually cause energy waste and increase the cost of long-term operation of the equipment. Therefore, it does not meet the existing needs. We have proposed a fully automatic detection device for pesticide residues in food. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully automatic detection device for pesticide residues in food to solve the problem raised in the above-mentioned background technology that when using such a fully automatic detection device for pesticide residues in food, it is necessary to manually add food leaves to the inside of a test tube and add water to manually shake it to extract the pesticides originally adsorbed on the surface of the food. This process is relatively cumbersome and has a low degree of automation. If the pesticide components are extracted by shaking alone, the extraction efficiency is low, which may result in some pesticide residues being unable to be completely dissolved, thereby affecting the accuracy of the test results. In addition, each time the device is used and opened, the heat inside it used to catalyze the dissolution of pesticides and reagents will dissipate to the outside world, which will eventually cause energy waste and increase the cost of the equipment when it is running for a long time.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fully automatic detection device for pesticide residues in food, comprising a pesticide residue rapid tester main body, a fully automatic high-precision pesticide residue detection mechanism installed on one side of the upper end surface of the pesticide residue rapid tester main body, the fully automatic high-precision pesticide residue detection mechanism comprising an operating chamber, an electric turntable, a rotation drive mechanism, a downward pressure drive mechanism, a plurality of second square reagent tube mounting grooves of the same number, pesticide square reagent tubes, a rotating inner liner and a metal test tube for storing mesh vegetable leaves, the electric turntable is installed in the middle position inside the operating chamber, the plurality of second square reagent tube mounting grooves are annularly arranged on the outer side of the upper end surface of the electric turntable, and the plurality of pesticide square reagent tubes are respectively inserted into the interiors of the plurality of second square reagent tube mounting grooves, and the plurality of rotating inner liner are respectively installed in the interiors of the plurality of pesticide square reagent tubes through roller bearings; The downward pressure driving mechanism can synchronously push all the mesh vegetable leaf storage metal test tubes downward until they are pushed into the interior of the rotating inner container, and the rotating driving mechanism can synchronously drive all the rotating inner containers to rotate.

[0006] Preferably, the downward driving mechanism includes a sealing cover, a pushing cylinder is fixedly installed in the middle position inside the sealing cover, the piston rod of the pushing cylinder is connected to a circular connecting plate, a circle of connecting rods is fixed on the outer surface of the circular connecting plate, a metal ring is fixed on the outer side of the multiple connecting rods, and a plurality of slots are provided on the lower end surface of the metal ring, and the positions and number of the multiple slots correspond to the positions and number of the multiple rotating inner tanks respectively.

[0007] Preferably, a plurality of the meshed vegetable leaf storage metal test tubes are respectively inserted into the interior of a plurality of the slots, the interior of the meshed vegetable leaf storage metal test tube contains a meshed metal test tube, a circle of vegetable slices for detection is provided on the outside of the meshed metal test tube, a plurality of through-plugs each of which penetrates the vegetable slices for detection is fixed on the outer surface of the meshed metal test tube, and a plurality of arc-shaped through-holes are provided on the outer surfaces of the meshed vegetable leaf storage metal test tube and the meshed metal test tube; The upper end surface of the mesh metal test tube is fixed with a downward pressing fixing head that fits in contact with the upper end surface of the mesh metal test tube for storing vegetable leaves. The outer side of the downward pressing fixing head is provided with an internal thread fixing cover on which the upper end surface of the metal ring is installed through a threaded structure, and the upper end surface of the downward pressing fixing head is in contact with the internal thread fixing cover.

[0008] Preferably, a warning light fixed to the upper end surface of the metal ring is provided on one side of the slot, and the warning light is electrically connected to the main body of the pesticide residue rapid tester.

[0009] Preferably, the rotary drive mechanism includes a rotary motor, the output shaft of the rotary motor is connected to a transmission shaft via a coupling, a second gear is fixedly sleeved on the outer surface of the transmission shaft, a plurality of first gears are meshedly connected to the outer surface of the second gear, and the positions and number of the plurality of first gears respectively correspond to the positions and number of the plurality of rotating inner tanks; The axis of the first gear is connected to an upper tooth head, the upper end surface of the upper tooth head is engaged with a lower tooth head, and the multiple lower tooth heads are respectively fixed to the middle positions of the lower end surfaces of the multiple rotating inner tanks; A circle of engaging pointed teeth is fixed on the lower end surface of the lower tooth head and the upper end surface of the upper tooth head, and the top end of the engaging pointed teeth is arc-shaped.

[0010] Preferably, a first square reagent tube mounting groove is provided on one side of the rotating inner tank and is located at the upper end of the electric turntable. A square comparison reagent tube is inserted into the interior of the first square reagent tube mounting groove. The inner wall cross-sections of the second square reagent tube mounting groove and the first square reagent tube mounting groove are both square. The outer surfaces of the pesticide square reagent tube and the square comparison reagent tube are respectively in contact with the inner walls of the second square reagent tube mounting groove and the first square reagent tube mounting groove. The upper end surface of the pesticide square reagent tube is provided with a circular groove, and a downward pressing fixing plate is provided between the multiple circular grooves and is installed on the lower end surface of the sealing cover through a roller bearing, and the lower end surface of the downward pressing fixing plate is in contact with the lower end inner wall of the circular groove.

[0011] Preferably, a fully automatic reagent adding mechanism is provided at the front and rear of the electric turntable, and the fully automatic reagent adding mechanism comprises a slide rail, a slider is installed on one side of the outer surface of the slide rail, a reagent bottle fixing rack is fixed on the upper end surface of the slider, a plurality of reagent bottles are placed on the inner side of the reagent bottle fixing rack, the upper end surface of each reagent bottle is connected to a liquid extraction tube, the upper end surface of the liquid extraction tube is connected to a liquid extraction valve, and an L-shaped bracket fixed to the outer surface of the slider is provided on the outer side of the plurality of liquid extraction valves; The surface of the liquid extraction valve facing the rotating inner container is connected to a liquid infusion tube, and the lower end surface of the liquid infusion tube is connected to a liquid outlet head whose position corresponds to that of the square contrast reagent tube.

[0012] Preferably, a heat source recycling mechanism is provided below the fully automatic high-precision pesticide residue detection mechanism, and the heat source recycling mechanism includes a synchronous drive mechanism, multiple piston grooves, and the same number of piston heads and sealing plates as the piston grooves. The multiple piston heads are respectively located inside the multiple piston grooves, and the multiple sealing plates are respectively located above the multiple piston heads. The synchronous drive mechanism can synchronously drive all the sealing plates to move inward or outward while driving all the piston heads to move synchronously upward or downward.

[0013] Preferably, the synchronous drive mechanism includes a stepper motor, the output shaft of the stepper motor is connected to a lifting threaded rod through a coupling, a lifting plate is installed on one side of the outer surface of the lifting threaded rod through a threaded structure, and a circle of connecting rods are fixed on the outer surface of the lifting plate, whose positions and numbers correspond to the positions and numbers of piston heads respectively, and the upper end surface of the connecting rod is fixed to the piston head located above it.

[0014] Preferably, the lower end surface of the connecting rod is a first inclined surface, a first rectangular pushing block is provided below the first inclined surface, one side of the outer surface of the first rectangular pushing block is a second inclined surface, a second rectangular pushing block is provided above the second inclined surface, the upper end surface of the second rectangular pushing block is a third inclined surface, a third rectangular pushing block is provided above the third inclined surface, and one side of the outer surface of the third rectangular pushing block is connected to a spring; The plurality of sealing plates are respectively fixed to the upper end surfaces of the plurality of third rectangular pushing blocks, and the sealing plates are slidably connected to the main body of the pesticide residue rapid tester.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a fully automatic high-precision pesticide residue detection mechanism. Simply by placing the vegetable slices for detection inside a meshed metal test tube for storing vegetable leaves, the rotating water source automatically flushes the pesticide components adsorbed on the outer surface of the vegetable slices for detection. The rotating water source in the above technical solution can form a flushing effect on the surface of the vegetable slices for detection, thereby improving the extraction efficiency during the pesticide extraction process. At the same time, this pesticide extraction process also reduces the extraction steps, reducing the cumbersomeness of the equipment operation while improving its detection accuracy. 2. The present invention can extract the hot air inside the working chamber for accelerating the dissolution of reagents and pesticides and seal it into the interior of the piston groove before opening the working chamber through the heat source recycling mechanism. The above technical solution solves the problem of heat loss during the opening process of traditional equipment. It is not only energy-saving and efficient, but also improves the safety of equipment operation and prevents hot air from scalding the operator's face that is not covered by protective clothing when the equipment is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 A front view of the present invention as a whole; Figure 3 For the present invention Figure 2 A magnified view of the structure at point A; Figure 4 For the present invention Figure 3 A magnified view of the structure at B in the middle; Figure 5 For the present invention Figure 3A magnified view of the structure at C in the middle; Figure 6 For the present invention Figure 5 A magnified view of the structure at D in the middle; Figure 7 It is a structural schematic diagram of the connection between the lower tooth head and the upper tooth head in the present invention.

[0017] Figure: 1. Pesticide Residue Rapid Tester Body; 2. Heat Source Circulation Mechanism; 201. Stepper Motor; 202. Lifting Threaded Rod; 203. Lifting Plate; 204. Connecting Rod; 205. Piston Head; 206. Piston Groove; 207. First Rectangular Push Block; 208. First Inclined Surface; 209. Second Inclined Surface; 210. Second Rectangular Push Block; 211. Third Rectangular Push Block; 212. Third Inclined Surface; 213. Spring; 214. Sealing Plate; 3. Working Chamber; 4. Electric Turntable; 5. First Square Reagent Tube Mounting Slot; 6. Square Comparison Reagent Tube; 7. Second Square shaped reagent tube mounting slot; 8. Pesticide square reagent tube; 9. Rotating inner tank; 10. Lower tooth head; 11. Upper tooth head; 12. First gear; 13. Rotating motor; 14. Transmission shaft; 15. Second gear; 16. Push cylinder; 17. Circular connecting plate; 18. Connecting rod; 19. Metal ring; 20. Metal test tube for storing mesh vegetable leaves; 21. Mesh metal test tube; 22. Through plug; 23. Vegetable slices for testing; 24. Press-down fixing head; 25. Slot; 26. Internal thread fixing cover; 27. Warning light; 28. Sealing cover; 29. ​​Automatic reagent adding mechanism. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] See also Figures 1 to 7 , the present invention provides an embodiment: a fully automatic detection device for pesticide residues in food, comprising a pesticide residue rapid tester body 1, a fully automatic high-precision pesticide residue detection mechanism is installed on one side of the upper end surface of the pesticide residue rapid tester body 1, the fully automatic high-precision pesticide residue detection mechanism comprises an operating chamber 3, an electric turntable 4, a rotation drive mechanism, a downward drive mechanism, a plurality of second square reagent tube mounting grooves 7 of the same number, pesticide square reagent tubes 8, a rotating inner tank 9 and a metal test tube 20 for storing mesh vegetable leaves, the electric turntable 4 is installed in the middle position inside the operating chamber 3, the plurality of second square reagent tube mounting grooves 7 are annularly arranged on the outer side of the upper end surface of the electric turntable 4, and the plurality of pesticide square reagent tubes 8 are respectively inserted into the plurality of second square reagent tube mounting grooves 7, and the plurality of rotating inner tanks 9 are respectively installed in the plurality of pesticide square reagent tubes 8 through roller bearings; The downward driving mechanism can synchronously push all the mesh vegetable leaf storage metal test tubes 20 downward until they are pushed into the interior of the rotating inner container 9, and the rotating driving mechanism can synchronously drive all the rotating inner containers 9 to rotate; a reagent automatic adding mechanism 29 is provided at the front and rear of the electric turntable 4, and the reagent automatic adding mechanism 29 includes a slide rail, a slider is installed on one side of the outer surface of the slide rail, a reagent bottle fixing rack is fixed on the upper end surface of the slider, and a plurality of reagent bottles are placed on the inner side of the reagent bottle fixing rack, and the upper end surface of each reagent bottle is connected to a liquid extraction tube, and the upper end surface of the liquid extraction tube is connected to a liquid extraction valve, and the outer side of the plurality of liquid extraction valves is provided with an L-shaped bracket fixed to the outer surface of the slider; The surface of the liquid extraction valve facing the rotating inner tank 9 is connected to an infusion tube, and the lower end surface of the infusion tube is connected to a liquid outlet head whose position corresponds to the square comparison reagent tube 6; in the preparation stage, pesticide detection reagents and pesticide extraction water sources are added to the inside of multiple reagent bottles respectively. After the reagents and water sources in the multiple reagent bottles are added, the sealing cover 28 is fixed to the outside of the working chamber 3 by a snap.

[0020] The rotary drive mechanism includes a rotary motor 13, the output shaft of the rotary motor 13 is connected to a transmission shaft 14 via a coupling, a second gear 15 is fixedly sleeved on the outer surface of the transmission shaft 14, and a plurality of first gears 12 are meshedly connected to the outer surface of the second gear 15, and the positions and number of the plurality of first gears 12 correspond to the positions and number of the plurality of rotating inner tanks 9 respectively; The axis of the first gear 12 is connected to the upper tooth head 11, the upper end surface of the upper tooth head 11 is engaged with the lower tooth head 10, and the multiple lower tooth heads 10 are respectively fixed to the middle position of the lower end surface of the multiple rotating inner tanks 9; A circle of engaging pointed teeth is fixed to the lower end surface of the lower tooth head 10 and the upper end surface of the upper tooth head 11, and the top end of the engaging pointed teeth is arc-shaped; a first square reagent tube mounting groove 5 is provided on one side of the rotating inner tank 9 at the upper end of the electric turntable 4, and a square comparison reagent tube 6 is inserted into the interior of the first square reagent tube mounting groove 5. The inner wall cross-sections of the second square reagent tube mounting groove 7 and the first square reagent tube mounting groove 5 are both square, and the outer surfaces of the pesticide square reagent tube 8 and the square comparison reagent tube 6 are respectively fitted with the inner walls of the second square reagent tube mounting groove 7 and the first square reagent tube mounting groove 5; when the water source and reagent inside the reagent bottle are added, a square comparison reagent tube 6 is inserted into the interior of each first square reagent tube mounting groove 5; After the square comparison reagent tube 6 is installed, a pesticide square reagent tube 8 is inserted into each second square reagent tube installation groove 7. As the pesticide square reagent tube 8 goes deeper, the lower tooth head 10 on the lower end surface of the rotating inner liner 9 installed inside the pesticide square reagent tube 8 through the roller bearing will be engaged with the upper tooth head 11 located below it; Through the engaging pointed teeth with an arc-shaped head at the top end, even if the tooth heads on 10 and 11 collide directly, they will be staggered from each other under the action of the arc surface. This structure can prevent the lower tooth head 10 and the upper tooth head 11 from being unable to engage with each other.

[0021] The downward driving mechanism includes a sealing cover 28, a pushing cylinder 16 is fixedly installed in the middle position inside the sealing cover 28, the piston rod of the pushing cylinder 16 is connected to a circular connecting plate 17, a circle of connecting rods 18 are fixed on the outer surface of the circular connecting plate 17, a metal ring 19 is fixed on the outer side of the multiple connecting rods 18, a plurality of slots 25 are provided on the lower end surface of the metal ring 19, and the positions and numbers of the multiple slots 25 correspond to the positions and numbers of the multiple rotating inner pots 9 respectively; a plurality of meshed metal test tubes 20 for storing vegetable leaves are respectively inserted into the interior of the multiple slots 25, the interior of the meshed metal test tubes 20 for storing vegetable leaves contains a meshed metal test tube 21, a circle of vegetable slices 23 for detection is provided on the outer side of the meshed metal test tube 21, a plurality of through-plugs 22 that all penetrate the vegetable slices 23 for detection are fixed on the outer surface of the meshed metal test tube 21, and a plurality of arc-shaped through holes are provided on the outer surfaces of the meshed metal test tubes 20 for storing vegetable leaves and the meshed metal test tubes 21; The upper end surface of the mesh metal test tube 21 is fixed with a downward-pressing fixing head 24 that fits on the upper end surface of the mesh vegetable leaf storage metal test tube 20. The outer side of the downward-pressing fixing head 24 is provided with an internally threaded fixing cover 26 to which the upper end surface of the metal ring 19 is mounted through a threaded structure, and the upper end surface of the downward-pressing fixing head 24 fits with the internally threaded fixing cover 26. After the square contrast reagent tube 6 and the second square reagent tube mounting groove 7 are installed, the sealing cover 28 is fixed to the outside of the working chamber 3 by a snap buckle, and then the vegetable slices 23 for detection are attached to the outer surface of the mesh metal test tube 21. In the process of attaching the vegetable slices 23 for detection to the outer surface of the mesh metal test tube 21, the vegetable slices 23 for detection can be inserted through the mesh metal test tube 21 fixed to the outer surface of the vegetable slices 23 for detection, so as to fix them. After the vegetable slices 23 for detection are fixed, the mesh metal test tube 21 with multiple vegetable slices 23 for detection on the outer surface is inserted into the interior of the mesh vegetable leaf storage metal test tube 20 until the downward pressing fixing head 24 fixed on the upper end surface of the vegetable slices 23 for detection fits with the upper end surface of the mesh vegetable leaf storage metal test tube 20. After the vegetable slices 23 for detection are inserted into the interior of the mesh vegetable leaf storage metal test tube 20, the mesh vegetable leaf storage metal test tube 20 is inserted into the insertion hole located on the outer surface of the metal ring 19. The interior of the groove 25 and the outer side of the top end thereof are provided with an internal thread fixing cover 26 through a threaded structure to fix the mesh metal test tube 21 and the vegetable slices 23 for testing. When the mesh vegetable leaf storage metal test tube 20 is fixed, when pesticide testing is required, the automatic reagent adding mechanism 29 is first used to add a pesticide extraction water source into the rotating inner liner 9 corresponding to the mesh vegetable leaf storage metal test tube 20 and a contrast water source into the square contrast reagent tube 6 corresponding to the rotating inner liner 9; When the water source is added, the pushing cylinder 16 is started to push the circular connecting plate 17 connected to it downward. During the downward movement of the circular connecting plate 17, the metal ring 19 connected to it by the connecting rod 18 and the mesh vegetable leaf storage metal test tube 20 fixed to the outer surface of the metal ring 19 will move downward together. As the mesh vegetable leaf storage metal test tube 20 descends, the mesh vegetable leaf storage metal test tube 20 will gradually be inserted into the rotating inner tank 9 containing the water source for pesticide extraction. When the mesh vegetable leaf storage metal test tube 20 can no longer be moved downward, the rotating motor 13 is started. The rotating motor 13 can drive the transmission shaft 14 connected to it and the second gear 15 fixed to the outer surface of the transmission shaft 14 to rotate. The rotating second gear 15 can drive the multiple first gears 12 meshed with it to rotate together. When the first gear 12 rotates, the upper tooth head 11 fixed inside the first gear 12 and the lower tooth head 10 connected to the upper tooth head 11 will rotate synchronously therewith, and the rotating lower tooth head 10 can drive the rotating inner container 9 fixed on its upper end surface to rotate together. As the inner container 9 rotates, the water source for pesticide extraction located inside it will continuously flush the fixed vegetable slices 23 for detection through the arc-shaped through holes located on the outer surface of the mesh vegetable leaf storage metal test tube 20 and the mesh metal test tube 21. Through the above technical solution, the surface of the vegetable slices 23 for detection can be automatically flushed by the rotating water source, thereby improving the extraction efficiency during the pesticide extraction process. At the same time, this pesticide extraction process also reduces the extraction steps, so that the extraction process no longer requires manual shaking, while reducing the cumbersomeness of equipment operation and improving its detection accuracy; When the rotating inner tank 9 rotates for five minutes and the pesticide extraction operation is completed, the metal test tube 20 for storing mesh vegetable leaves is pulled back to its original position by the pushing cylinder 16, and then the reagent is dissolved into the interior of the rotating inner tank 9 and the square comparison reagent tube 6 through the fully automatic reagent adding mechanism 29. When the addition is completed, the pesticide residue rapid tester body 1 is started to heat the interior of the working chamber 3. At this time, the temperature inside it is adjusted according to the type of pesticide being detected. After fifteen minutes, the pesticide residue rapid tester body 1 extracts its value and prints the result out or displays it on the corresponding software through the network.

[0022] A warning light 27 is provided on one side of the slot 25 and is fixed to the upper end surface of the metal ring 19. The warning light 27 is electrically connected to the main body 1 of the pesticide residue rapid tester. The warning light 27 can indicate whether the metal test tube 20 for storing vegetable leaves is inserted into the slot 25 corresponding to the position of the warning light 27 and which step is being performed. When the warning light 27 is red, it means that the metal test tube 20 for storing vegetable leaves is not inserted into the corresponding slot 25. If it is purple, it means that the pesticide extraction operation is in progress. If it is blue, it means that the test tube is being heated. If it is green, it means that the metal test tube 20 for storing vegetable leaves in the corresponding slot 25 has been tested. If the prompt light 27 is blue during the heating operation, the operator can simultaneously install the mesh metal test tube 20 for storing vegetable leaves inside the other slots 25, and at the same time move the square comparison reagent tube 6 and the second square reagent tube installation slot 7 corresponding to this position to the bottom of the reagent automatic adding mechanism 29 closest to it through the electric turntable 4, and perform the water source filling operation. The above technical solution can be used to perform new installation operations during the heating operation. When the detection is completed, the next pesticide detection operation can be carried out immediately. The above technical solution further improves the detection efficiency of the equipment.

[0023] The upper end face of the pesticide square reagent tube 8 is provided with a circular groove, and a downward pressing fixing plate is provided between the multiple circular grooves, which is installed on the lower end face of the sealing cover 28 through a roller bearing, and the lower end face of the downward pressing fixing plate is in contact with the lower end inner wall of the circular groove; when the sealing cover 28 is installed, the lower end face of the downward pressing fixing plate will be in contact with the lower end inner wall of the circular groove located on the upper end face of the pesticide square reagent tube 8, so as to fix it. This structure can prevent the pesticide square reagent tube 8 from shaking as a whole or even falling out from the inside of the second square reagent tube mounting groove 7 when the rotating inner liner 9 located inside the pesticide square reagent tube 8 is driven to rotate.

[0024] A heat source recycling mechanism 2 is provided below the fully automatic high-precision pesticide residue detection mechanism. The heat source recycling mechanism 2 includes a synchronous drive mechanism, multiple piston grooves 206 and the same number of piston heads 205 and sealing plates 214 as the piston grooves 206. The multiple piston heads 205 are respectively located inside the multiple piston grooves 206, and the multiple sealing plates 214 are respectively located above the multiple piston heads 205. The synchronous drive mechanism can synchronously drive all the sealing plates 214 to move inward or outward while driving all the piston heads 205 to move upward or downward synchronously; the synchronous drive mechanism includes a stepping motor 201, and the output shaft of the stepping motor 201 is connected to the lifting threaded rod 202 through a coupling. A lifting plate 203 is installed on one side of the outer surface of the lifting threaded rod 202 through a threaded structure. The outer surface of the lifting plate 203 is fixed with a circle whose position and number correspond to the position and number of the piston heads 205. Connecting rod 204, and the upper end surface of connecting rod 204 and the piston head 205 located above it are fixed; when all square contrast reagent tubes 6 and rotating inner tanks 9 on the working chamber 3 have been used and need to be replaced, before removing the sealing cover 28 to open the working chamber 3, start the stepper motor 201, and the stepper motor 201 can drive the lifting threaded rod 202 connected to it and the lifting plate 203 installed on the outer surface of the lifting threaded rod 202 through the threaded structure to move up and down. At this time, the lifting plate 203 is moved downward. As the lifting plate 203 descends, the piston head 205 connected to it by the connecting rod 204 will move downward inside the piston groove 206. During the process of the piston head 205 moving downward inside the piston groove 206, an adsorption force will be generated. Through this adsorption force, the hot air inside the working chamber 3 used to accelerate the dissolution of reagents and pesticides can be moved to the inside of the piston groove 206.

[0025] The lower end surface of the connecting rod 204 is a first inclined surface 208, below which a first rectangular pushing block 207 is provided, one side of the outer surface of the first rectangular pushing block 207 is a second inclined surface 209, above which a second rectangular pushing block 210 is provided, the upper end surface of the second rectangular pushing block 210 is a third inclined surface 212, above which a third rectangular pushing block 211 is provided, and one side of the outer surface of the third rectangular pushing block 211 is connected to a spring 213; A plurality of sealing plates 214 are respectively fixed to the upper end surfaces of a plurality of third rectangular pushing blocks 211, and the sealing plates 214 are slidably connected to the main body 1 of the pesticide residue rapid tester; when the connecting rod 204 moves downward, the first inclined surface 208 located on the lower end surface thereof will contact the first rectangular pushing block 207 and push the first rectangular pushing block 207 outward, and the second inclined surface 209 on the outer surface of the first rectangular pushing block 207 pushed outward will contact the second rectangular pushing block 210 and push the second rectangular pushing block 210 upward, and as the second rectangular pushing block 210 rises, the third inclined surface 212 located on the upper end surface of the second rectangular pushing block 210 will contact the third inclined surface 213 The three rectangular pushing blocks 211 push the third rectangular pushing block 211 inward. As the third rectangular pushing block 211 moves, the sealing plate 214 fixed thereto will move inward together. When the surface of the sealing plate 214 facing the piston groove 206 is in contact with the piston groove 206, the piston groove 206 can be sealed. Through the above technical solution, the hot air inside the working chamber 3 can be extracted and sealed into the inside of the piston groove 206, thereby solving the problem of heat loss in the opening process of traditional equipment. It is not only energy-saving and efficient, but also improves the safety of equipment operation and prevents the occurrence of hot air scalding the operator's face that is not covered by protective clothing when the equipment is opened; When the third rectangular pushing block 211 is pushed inward, it will squeeze the spring 213 connected to it. When the square contrast reagent tube 6 and the second square reagent tube installation groove 7 are replaced and the sealing cover 28 is installed again, the piston head 205 is pushed upward by the second rectangular pushing block 210. At the same time, the sealing plate 214 will be pushed outward by the reaction force of the squeezed spring 213, thereby releasing the seal on the inside of the piston groove 206.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A fully automatic detection device for pesticide residues in food, comprising a pesticide residue rapid tester body (1), characterized in that: A fully automatic high-precision pesticide residue detection mechanism is installed on one side of the upper end surface of the main body (1) of the pesticide residue rapid tester. The fully automatic high-precision pesticide residue detection mechanism includes an operating chamber (3), an electric turntable (4), a rotation drive mechanism, a downward pressure drive mechanism, a plurality of second square reagent tube mounting grooves (7) of the same number, pesticide square reagent tubes (8), a rotating inner tank (9) and a metal test tube (20) for storing mesh vegetable leaves. The electric turntable (4) is installed in the middle position inside the operating chamber (3). The plurality of second square reagent tube mounting grooves (7) are arranged in a ring shape on the outer side of the upper end surface of the electric turntable (4), and the plurality of pesticide square reagent tubes (8) are respectively inserted into the interior of the plurality of second square reagent tube mounting grooves (7). The plurality of rotating inner tanks (9) are respectively installed in the interior of the plurality of pesticide square reagent tubes (8) through roller bearings. The downward driving mechanism can synchronously push all the mesh vegetable leaf storage metal test tubes (20) downward until they are pushed into the interior of the rotating inner container (9), and the rotating driving mechanism can synchronously drive all the rotating inner containers (9) to rotate.

2. The fully automatic detection device for pesticide residues in food according to claim 1, characterized in that: The downward driving mechanism comprises a sealing cover (28), a pushing cylinder (16) is fixedly installed in the middle position inside the sealing cover (28), a piston rod of the pushing cylinder (16) is connected to a circular connecting plate (17), a circle of connecting rods (18) is fixedly provided on the outer surface of the circular connecting plate (17), a metal ring (19) is fixed on the outer side of the plurality of connecting rods (18), a plurality of slots (25) are provided on the lower end surface of the metal ring (19), and the positions and number of the plurality of slots (25) respectively correspond to the positions and number of the plurality of rotating inner containers (9).

3. The fully automatic detection device for pesticide residues in food according to claim 2, characterized in that: A plurality of the mesh vegetable leaf storage metal test tubes (20) are respectively inserted into the interior of the plurality of the slots (25); the mesh vegetable leaf storage metal test tube (20) contains a mesh metal test tube (21) inside; a circle of detection vegetable slices (23) is provided on the outside of the mesh metal test tube (21); a plurality of through-plugs (22) each penetrating the detection vegetable slices (23) are fixedly provided on the outer surface of the mesh metal test tube (21); and a plurality of arc-shaped through-holes are provided on the outer surfaces of the mesh vegetable leaf storage metal test tube (20) and the mesh metal test tube (21); The upper end surface of the mesh metal test tube (21) is fixed with a downward pressing fixing head (24) that fits in contact with the upper end surface of the mesh metal test tube (20) for storing vegetable leaves. The outer side of the downward pressing fixing head (24) is provided with an internal thread fixing cover (26) to which the upper end surface of the metal ring (19) is mounted through a threaded structure, and the upper end surface of the downward pressing fixing head (24) and the internal thread fixing cover (26) fit in contact.

4. The fully automatic detection device for pesticide residues in food according to claim 3, characterized in that: A warning light (27) fixed to the upper end surface of the metal ring (19) is provided on one side of the slot (25), and the warning light (27) is electrically connected to the main body (1) of the pesticide residue rapid tester.

5. The fully automatic detection device for pesticide residues in food according to claim 1, characterized in that: The rotary drive mechanism comprises a rotary motor (13), the output shaft of the rotary motor (13) being connected to a transmission shaft (14) via a coupling, the outer surface of the transmission shaft (14) being fixedly sleeved with a second gear (15), the outer surface of the second gear (15) being meshingly connected to a plurality of first gears (12), and the positions and number of the plurality of first gears (12) respectively corresponding to the positions and number of the plurality of rotary inner containers (9); The axis of the first gear (12) is connected to an upper tooth head (11), the upper end surface of the upper tooth head (11) is engaged with a lower tooth head (10), and a plurality of the lower tooth heads (10) are respectively fixed to the middle positions of the lower end surfaces of a plurality of rotating inner containers (9); A circle of engaging pointed teeth is fixed to the lower end surface of the lower tooth head (10) and the upper end surface of the upper tooth head (11), and the top ends of the engaging pointed teeth are arc-shaped.

6. The fully automatic detection device for pesticide residues in food according to claim 5, characterized in that: A first square reagent tube mounting groove (5) is provided on one side of the rotating inner tank (9) and is located at the upper end of the electric turntable (4); a square comparison reagent tube (6) is inserted into the interior of the first square reagent tube mounting groove (5); the inner wall cross-sections of the second square reagent tube mounting groove (7) and the first square reagent tube mounting groove (5) are both square; the outer surfaces of the pesticide square reagent tube (8) and the square comparison reagent tube (6) are respectively fitted with the inner walls of the second square reagent tube mounting groove (7) and the first square reagent tube mounting groove (5); The upper end surface of the pesticide square reagent tube (8) is provided with a circular groove, and a downward pressing fixing plate is provided between the plurality of circular grooves and is mounted on the lower end surface of the sealing cover (28) via a roller bearing, and the lower end surface of the downward pressing fixing plate is in contact with the lower end inner wall of the circular groove.

7. The fully automatic detection device for pesticide residues in food according to claim 1, characterized in that: A reagent automatic adding mechanism (29) is provided at the front and rear of the electric turntable (4), and the reagent automatic adding mechanism (29) comprises a slide rail, a slider is installed on one side of the outer surface of the slide rail, a reagent bottle fixing rack is fixed on the upper end surface of the slider, a plurality of reagent bottles are placed on the inner side of the reagent bottle fixing rack, the upper end surface of each reagent bottle is connected to a liquid extraction tube, the upper end surface of the liquid extraction tube is connected to a liquid extraction valve, and an L-shaped bracket fixed to the outer surface of the slider is provided on the outer side of the plurality of liquid extraction valves; The surface of the liquid extraction valve facing the rotating inner container (9) is connected to a liquid infusion tube, and the lower end surface of the liquid infusion tube is connected to a liquid outlet head whose position corresponds to that of the square contrast reagent tube (6).

8. The fully automatic detection device for pesticide residues in food according to claim 1, characterized in that: A heat source recycling mechanism (2) is provided below the fully automatic high-precision pesticide residue detection mechanism. The heat source recycling mechanism (2) comprises a synchronous driving mechanism, a plurality of piston grooves (206), and piston heads (205) and sealing plates (214) whose number is the same as the number of piston grooves (206). The plurality of piston heads (205) are respectively located inside the plurality of piston grooves (206), and the plurality of sealing plates (214) are respectively located above the plurality of piston heads (205). The synchronous driving mechanism can synchronously drive all the sealing plates (214) to move inward or outward while driving all the piston heads (205) to move synchronously upward or downward.

9. The fully automatic detection device for pesticide residues in food according to claim 8, characterized in that: The synchronous drive mechanism comprises a stepper motor (201), the output shaft of the stepper motor (201) is connected to a lifting threaded rod (202) via a coupling, a lifting plate (203) is mounted on one side of the outer surface of the lifting threaded rod (202) via a threaded structure, a circle of connecting rods (204) whose positions and number correspond to the positions and number of piston heads (205) are fixed to the outer surface of the lifting plate (203), and the upper end surface of the connecting rod (204) is fixed to the piston head (205) located above it.

10. The fully automatic detection device for pesticide residues in food according to claim 9, characterized in that: The lower end surface of the connecting rod (204) is a first inclined surface (208), a first rectangular pushing block (207) is provided below the first inclined surface (208), one side of the outer surface of the first rectangular pushing block (207) is a second inclined surface (209), a second rectangular pushing block (210) is provided above the second inclined surface (209), the upper end surface of the second rectangular pushing block (210) is a third inclined surface (212), a third rectangular pushing block (211) is provided above the third inclined surface (212), and a spring (213) is connected to one side of the outer surface of the third rectangular pushing block (211); The plurality of sealing plates (214) are respectively fixed to the upper end surfaces of the plurality of third rectangular pushing blocks (211), and the sealing plates (214) are slidably connected to the main body (1) of the pesticide residue rapid tester.

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