A device for detecting pesticide and veterinary drug residues in agricultural products and foods

Abstract

The present invention discloses a device for detecting pesticide and veterinary drug residues in agricultural products and foods, which belongs to the field of agricultural products and foods detection, and includes a shell, a detector, a heating box, and a limiting mechanism. A sampling tube is installed inside the limiting mechanism, a sealing cover is threadedly connected to the top of the heating box, and a driving mechanism is provided on the upper surface of the sealing cover. The driving mechanism includes a driving rod rotatably connected to the inside of the sealing cover, and the driving rod passes through the sealing cover and is fixedly connected to a crushing component. When preparing a sample, the present application can put the required sample into the sampling tube, and add an appropriate amount of sample diluent therein, and through the driving mechanism, the driving rod drives the connecting rod to rotate, so that the blades crush the sample in the sampling tube. Compared with the decentralized preparation, this sample preparation process not only reduces the possibility of sample contamination, but also reduces the workload of manual sample preparation, and improves the detection quality and efficiency of pesticide and veterinary drug residues in agricultural products.

Description

Technical Field

[0001] The invention relates to the field of agricultural product and food detection, and more specifically to a device for detecting pesticide and veterinary drug residues in agricultural product and food. Background Art

[0002] In the process of agricultural industrialization, the use of pesticides and veterinary drugs has become a key measure to ensure the health of crops and animals. However, the problem of pesticide and veterinary drug residues caused by their unreasonable or abuse has gradually become a major challenge in the field of food safety. In order to ensure food quality and safety, it is particularly important to test agricultural products and their processed products for pesticide and veterinary drug residues. Therefore, in order to reduce the damage caused by pesticide and veterinary drug residues, it is necessary to use a dedicated pesticide and veterinary drug residue detector to test agricultural products and their processed products for residual pesticides and veterinary drugs. Through testing, contaminants in food can be discovered in time, so that corresponding measures can be taken to ensure food quality and safety.

[0003] However, when using a pesticide and veterinary drug residue detector to detect meat products, the following operations need to be performed: sample preparation, extraction and purification, chromatographic condition setting, sampling and analysis, detection and recording, and the type of pesticide and veterinary drug residues present in the sample can be determined by comparing with the chromatogram of the standard; and when preparing, transporting and detecting samples, the sample preparation, transportation and detection are mostly dispersed structures, and when sampling, representative samples need to be collected from pork, and the samples need to be properly processed, such as crushing, homogenization and other operations to ensure the accuracy of the analysis. This sample preparation process is not only time-consuming and labor-intensive, but also prone to sample contamination, which seriously affects the quality and efficiency of pesticide and veterinary drug residue detection of agricultural products. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a detection device for agricultural products and food pesticide and veterinary drug residues.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A detection device for agricultural products and food pesticide and veterinary drug residues, comprising a shell, a detector is installed inside the shell, a support mechanism is arranged on the upper surface of the shell, the shell is fixedly connected to a heating box through the support mechanism, a heating unit is fixedly installed in the middle of the heating box, a uniformly distributed limiting mechanism is arranged around the inner wall of the heating box, a sampling tube is installed inside the limiting mechanism, a sealing cover is threadedly connected to the top of the heating box, a driving mechanism is arranged on the upper surface of the sealing cover, the driving mechanism comprises a driving rod rotatably connected to the inside of the sealing cover, the driving rod passes through the sealing cover and is fixedly connected to a crushing assembly;

[0007] The crushing assembly comprises a partition fixedly connected to the bottom of the driving rod, a cover plate fixedly connected to the bottom of the partition, a connecting rod fixedly connected to the middle of the bottom of the cover plate, and linearly arranged blades fixedly connected to the bottom end of the outer circular surface of the connecting rod.

[0008] Furthermore, a conveying mechanism is provided at the inner bottom of the heating box, a baffle is fixedly connected to the middle of the outer circular surface of the connecting rod, the outer diameter of the baffle is the same as the inner diameter of the sampling tube, a first fixed plate is fixedly connected to the outer edge of the top of the heating box, a second fixed plate of the same size as the first fixed plate is fixedly connected to the outer circular surface of the sealing cover, and bolts are threadedly connected to the middle of the first fixed plate and the second fixed plate.

[0009] Furthermore, the limiting mechanism includes a first limiting plate fixedly connected to the inner wall of the heating box, a connecting plate fixedly connected to one side of the bottom of the first limiting plate, the first limiting plate fixedly connected to the second limiting plate through the connecting plate, placement slots are opened in the middle of the inside of the first limiting plate and the second limiting plate, and a mesh cover is fixedly connected to the bottom of the second limiting plate.

[0010] Furthermore, the inner diameter of the top of the mesh cover is the same as the outer diameter of the sampling tube, the inner wall of the slot of the first limiting plate is fixedly connected with spring telescopic rods arranged in a circle, and one end of the spring telescopic rods is fixedly connected with a clamp.

[0011] Furthermore, the driving mechanism also includes a limit seat fixedly connected to the upper surface of the sealing cover and arranged in a circle, the interior of the limit seat is rotatably connected to a driving rod, and a second servo motor is fixedly connected to the top end of the driving rod located on the rear side of the sealing cover, and a handle is fixedly connected in the middle of the upper surface of the sealing cover.

[0012] Furthermore, a gear is fixedly connected to the upper end of the outer circumferential surface of the driving rod, a gear belt is meshed and rotated on the outer circumferential surface of the gear, and a cover for preventing the gear belt from rotating at an angle deviated is fixedly connected to the upper surface of the sealing cover.

[0013] Furthermore, a connecting pipe is fixedly connected to the bottom of the sampling tube, and the conveying mechanism includes a plurality of flow tubes fixedly connected to the bottom of the heating box, the top of the flow tube is threadedly connected to the inside of the connecting pipe, the flow tube passes through the heating box and is provided with a valve, and a filter plate is fixedly connected to the top opening of the flow tube.

[0014] Furthermore, a delivery pipe is installed at the bottom of the circulation pipe, and both ends of the delivery pipe are fixedly connected with connecting sleeves, and the connecting sleeve at one end of the delivery pipe is threadedly connected to the bottom of the circulation pipe, and the connecting sleeve at the other end of the delivery pipe is threadedly connected to the detector.

[0015] Furthermore, the supporting mechanism includes vertical plates fixedly connected to both sides of the upper surface of the shell, an arc-shaped groove is opened inside the vertical plates, a supporting plate is fixedly connected to the recessed part at the top of the vertical plates, a first servo motor is fixedly connected to one side of the outer surface of the support plate, and a support rod is fixedly connected to the output end of the first servo motor, and the support rod passes through the support plate and is fixedly connected to the heating box.

[0016] Furthermore, a support arm is fixedly connected to the middle of the outer circumferential surface of the support rod, a limiting rod is fixedly connected to one side of the bottom of the support arm, and the limiting rod is slidably connected in the arc groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) This solution is provided with a driving mechanism and a crushing component. When preparing a sample, the required sample can be placed in a sampling tube and an appropriate amount of sample diluent can be added thereto. At this time, a sealing cover can be covered and the driving mechanism can be used to make the driving rod drive the connecting rod of the crushing component to rotate synchronously, so that the blades can crush the sample in the sampling tube, so that the crushed sample is fully mixed with the diluent. Compared with decentralized preparation, this sample preparation process not only reduces the possibility of sample contamination, but also reduces the workload of manual sample preparation, thereby improving the quality and efficiency of pesticide and veterinary drug residue detection in agricultural products.

[0019] (2) By providing a heating box, a heating unit, and a limiting mechanism, when the sample is crushed, not only can the spring telescopic rod be used to clamp the sampling tube to ensure that the sample crushing can be carried out normally, but also the heating unit can be connected to an external power supply to heat the water in the heating box, thereby performing a water bath heating operation on the sample in the sampling tube, so that the pesticide residues are better dissolved from the pork tissue into the extraction solvent, thereby improving the extraction efficiency and ensuring that more residues are extracted for subsequent analysis.

[0020] (3) By providing a driving mechanism and a crushing assembly, during the crushing process of the sample in the sampling tube, the baffle can be used to separate the sampling tube into two cavities, so that when the sample in the sampling tube is crushed, the residual liquid of the sample is prevented from splashing onto the top wall of the sampling tube, thereby reducing the residual liquid of the sample collected, thereby affecting the accuracy of the test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 A bottom view of the present invention;

[0023] Figure 3It is a schematic diagram of the separation and connection of the driving mechanism and the heating box of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection of the heating box of the present invention;

[0025] Figure 5 It is a cross-sectional view of the interior of the heating box of the present invention;

[0026] Figure 6 It is a schematic diagram of the internal connection of the sampling tube of the present invention;

[0027] Figure 7 It is a schematic diagram of the separation and connection of the sampling tube and the conveying mechanism of the present invention.

[0028] Description of the numbers in the figure:

[0029] 1. Shell; 11. Detector; 2. Support mechanism; 21. Vertical plate; 22. Arc groove; 23. Support plate; 24. Support rod; 25. Support arm; 26. Limit rod; 27. First servo motor;

[0030] 3. Heating box; 31. Heating unit;

[0031] 4. Limiting mechanism; 41. First limiting plate; 42. Second limiting plate; 43. Net cover; 44. Spring telescopic rod; 45. Clamp;

[0032] 5. Sampling tube; 51. Connecting tube; 6. Sealing cover;

[0033] 7. driving mechanism; 71. cover; 72. gear belt; 73. driving rod; 74. gear; 75. limit seat; 76. second servo motor;

[0034] 8. Crushing assembly; 81. Partition plate; 82. Cover plate; 83. Connecting rod; 84. Baffle plate; 85. Blade;

[0035] 9. Conveying mechanism; 91. Flow pipe; 92. Filter plate; 93. Valve; 94. Conveying pipe; 95. Connecting sleeve. DETAILED DESCRIPTION

[0036] 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; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 7A detection device for agricultural products and food pesticide and veterinary drug residues, comprising a shell 1, a detector 11 is installed inside the shell 1, a support mechanism 2 is arranged on the upper surface of the shell 1, a heating box 3 is fixedly connected to the shell 1 through the support mechanism 2, a heating unit 31 is fixedly installed in the middle of the heating box 3, a uniformly distributed limiting mechanism 4 is arranged around the inner wall of the heating box 3, a sampling tube 5 is installed inside the limiting mechanism 4, a sealing cover 6 is threadedly connected to the top of the heating box 3, a driving mechanism 7 is arranged on the upper surface of the sealing cover 6, the driving mechanism 7 includes a driving rod 73 rotatably connected to the inside of the sealing cover 6, the driving rod 73 penetrates the sealing cover 6 and is fixedly connected to a crushing component 8;

[0038] The crushing assembly 8 includes a partition 81 fixedly connected to the bottom of the driving rod 73, a cover plate 82 fixedly connected to the bottom of the partition 81, a connecting rod 83 fixedly connected to the middle of the bottom of the cover plate 82, and a linearly arranged blade 85 fixedly connected to the bottom end of the outer cylindrical surface of the connecting rod 83.

[0039] like Figure 1 , Figure 3 As shown, a conveying mechanism 9 is provided at the inner bottom of the heating box 3, a baffle 84 is fixedly connected to the middle of the outer circumferential surface of the connecting rod 83, the outer diameter of the baffle 84 is the same as the inner diameter of the sampling tube 5, a first fixing plate is fixedly connected to the outer edge of the top of the heating box 3, a second fixing plate of the same size as the first fixing plate is fixedly connected to the outer circumferential surface of the sealing cover 6, and bolts are threadedly connected at the middle of the first fixing plate and the second fixing plate.

[0040] When preparing the sample, the required sample can be placed in the sampling tube 5, and an appropriate amount of sample diluent is added thereto, and then the sample tube 5 is placed in the heating box 3. After being fixed by the limiting mechanism 4, the sampling tube 5 can be rotated so that the bottom of the sampling tube 5 is threadedly connected to the conveying mechanism 9. At this time, the sealing cover 6 can be covered, and the driving mechanism 7 can be started to rotate the driving rod 73, so that the fixedly connected partition 81 drives the cover plate 82 to rotate synchronously in the heating box 3, and the connecting rod 83 drives the blade 85 to rotate synchronously in the sampling tube 5, so that the blade 85 performs a crushing operation on the sample in the sampling tube 5, so that the crushed sample is fully mixed with the diluent. Compared with the decentralized preparation, this sample preparation process not only reduces the possibility of sample contamination, but also reduces the workload of manual sample preparation, thereby improving the quality of agricultural product pesticide and veterinary drug residue detection and the efficiency of pesticide and veterinary drug residue detection, and after the sample preparation is completed, the sample residual liquid can be transported to the detector 11 through the conveying mechanism 9, and the sample residual liquid can be detected and analyzed by the detector 11.

[0041] In the process of crushing the sample in the sampling tube 5, it is easy for the residual sample liquid to splash onto the inner top wall of the sampling tube 5, resulting in a reduction in the collected residual sample liquid, thereby affecting the accuracy of the subsequent detection results of the residual sample liquid. Therefore, when using the blade 85 to crush the sample in the sampling tube 5, the baffle 84 can be used to separate the sampling tube 5 into two cavities, so that the inner top of the sampling tube 5 is separated and processed, reducing the possibility of its inner top wall being contaminated, thereby ensuring that the collected residual sample liquid can be used normally for subsequent detection work, thereby improving the accuracy of the detection results of the residual sample liquid.

[0042] like Figure 1 , Figure 2 , Figure 5 As shown, the limiting mechanism 4 includes a first limiting plate 41 fixedly connected to the inner wall of the heating box 3, a connecting plate fixedly connected to one side of the bottom of the first limiting plate 41, the first limiting plate 41 is fixedly connected to the second limiting plate 42 through the connecting plate, and placement slots are opened in the middle of the first limiting plate 41 and the second limiting plate 42, and a mesh cover 43 is fixedly connected to the bottom of the second limiting plate 42.

[0043] like Figure 4 , Figure 5 As shown, the inner diameter of the top of the mesh cover 43 is the same as the outer diameter of the sampling tube 5, the inner wall of the slot of the first limit plate 41 is fixedly connected with spring telescopic rods 44 arranged in a circle, and one end of the spring telescopic rods 44 is fixedly connected with a clamping plate 45.

[0044] When the sample is crushed, the sampling tube 5 can be placed in the placement slots inside the first limit plate 41 and the second limit plate 42, and the spring telescopic rod 44 can be used to clamp the sampling tube 5 with the clamp 45, and the mesh cover 43 can also be used to lift the bottom of the sampling tube 5 to ensure that the sample crushing can be carried out normally. At the same time, the heating unit 31 can be used through an external power supply to heat the water in the heating box 3, so that the sampling tube 5 fixed in the mesh cover 43 will not fall over, thereby ensuring that the sample in the sampling tube 5 can be heated in a normal water bath, so that the pesticide residues can be better dissolved from the pork tissue into the extraction solvent, thereby improving the extraction efficiency and ensuring that more residues are extracted for subsequent analysis.

[0045] like Figure 1 , Figure 3 , Figure 5 As shown, the driving mechanism 7 also includes a limit seat 75 fixedly connected to the upper surface of the sealing cover 6 and arranged in a circle, the interior of the limit seat 75 is rotatably connected to the driving rod 73, and the top end of the driving rod 73 located on the rear side of the sealing cover 6 is fixedly connected to a second servo motor 76, and a handle is fixedly connected to the middle of the upper surface of the sealing cover 6.

[0046] like Figure 3 , Figure 5 As shown, a gear 74 is fixedly connected to the upper end of the outer circumferential surface of the driving rod 73, and a gear belt 72 is meshed and rotated on the outer circumferential surface of the gear 74. A cover 71 for preventing the gear belt 72 from rotating at an angle is fixedly connected to the upper surface of the sealing cover 6.

[0047] In the process of testing samples for pesticide and veterinary drug residues, in order to ensure the accuracy of the results, it is necessary to select multiple samples of the same type for testing. However, the preparation of multiple samples is a heavy task and the preparation process is time-consuming and labor-intensive. Therefore, multiple sampling tubes 5 and multiple crushing components 8 can be provided, and the second servo motor 76 can be started to rotate the drive rod 73 in the limit seat 75. At the same time, the gear 74 and the gear belt 72 can be used to make the multiple drive rods 73 in the sealing cover 6 rotate synchronously, so that the connecting rods 83 at different positions rotate synchronously, and then the multiple blades 85 crush the samples in the sampling tubes 5 at different positions. This preparation process not only reduces the workload of the testers, but also improves the sample preparation efficiency.

[0048] like Figure 1 , Figure 5 , Figure 7 As shown, a connecting pipe 51 is fixedly connected to the bottom of the sampling tube 5, and the conveying mechanism 9 includes a plurality of flow tubes 91 fixedly connected to the bottom of the heating box 3, the top of the flow tube 91 is threadedly connected to the inside of the connecting pipe 51, the flow tube 91 passes through the heating box 3 and is provided with a valve 93, and a filter plate 92 is fixedly connected to the top opening of the flow tube 91.

[0049] like Figure 7 As shown, a delivery pipe 94 is installed at the bottom of the circulation pipe 91, and connecting sleeves 95 are fixedly connected to both ends of the delivery pipe 94. The connecting sleeve 95 at one end of the delivery pipe 94 is threadedly connected to the bottom of the circulation pipe 91, and the connecting sleeve 95 at the other end of the delivery pipe 94 is threadedly connected to the detector 11.

[0050] After the sample residual liquid is prepared, the valve 93 of the circulation tube 91 can be opened to allow the sample residual liquid in the sampling tube 5 to flow into the circulation tube 91 through the connecting tube 51. Before the sample residual liquid enters the circulation tube 91, the sample residual liquid must first pass through the filter plate 92 to prevent sample impurities from entering the circulation tube 91. At the same time, since the sample residual liquid needs to be heated during the detection of pesticide and veterinary drug residues in pork, a small amount of floating oil will be produced in the heated sample residual liquid. Therefore, the filter plate 92 can be used to filter the floating oil in the sample residual liquid, so that the sample residual liquid passes through the circulation tube 91 and the delivery tube 94, and is transported to the detection tank of the detector 11, and the detector 11 is used to perform pesticide and veterinary drug detection operations on the sample residual liquid.

[0051] like Figure 1 , Figure 2 As shown, the support mechanism 2 includes a vertical plate 21 fixedly connected to both sides of the upper surface of the shell 1, an arc groove 22 is opened inside the vertical plate 21, a support plate 23 is fixedly connected to the recessed part at the top of the vertical plate 21, a first servo motor 27 is fixedly connected to one side of the outer surface of the support plate 23, and a support rod 24 is fixedly connected to the output end of the first servo motor 27, and the support rod 24 passes through the support plate 23 and is fixedly connected to the heating box 3.

[0052] like Figure 1 , Figure 2 As shown, a support arm 25 is fixedly connected to the middle of the outer circumferential surface of the support rod 24 , and a limiting rod 26 is fixedly connected to one side of the bottom of the support arm 25 , and the limiting rod 26 is slidably connected to the arc groove 22 .

[0053] During the sample preparation process, the first servo motor 27 can be started to rotate forward and reverse, so that the support rod 24 drives the support arm 25 to rotate synchronously, thereby making the limit rod 26 rotate synchronously in the arc groove 22, and at the same time making the fixedly connected heating box 3 also rotate synchronously, and because the arc groove 22 is provided, the limit rod 26 swings back and forth inside it, and the heating box 3 swings synchronously, so that the sampling tube 5 in the heating box 3 swings accordingly, and the swing amplitude is utilized to make the sample in the sampling tube 5 and the sample diluent be fully mixed, so that the effect of extracting the sample residual liquid is better, and the accuracy of the subsequent detection results of the sample residual liquid is further improved.

[0054] Usage method: When preparing the sample, the required sample can be placed in the sampling tube 5, and a proper amount of sample diluent can be added therein, and then the sampling tube 5 can be placed in the heating box 3, and the spring telescopic rod 44 can be used to clamp the clamping plate 45 on the sampling tube 5, and the mesh cover 43 can be used to lift the bottom of the sampling tube 5. After the operation, the sampling tube 5 can be rotated so that the bottom of the sampling tube 5 is threadedly connected to the flow tube 91. At this time, the sealing cover 6 can be covered, and the second servo motor 76 can be started to rotate the driving rod 73, so that the fixedly connected partition plate 81 drives the cover plate 82 to rotate synchronously in the heating box 3, and the connecting rod 83 drives the blade 85 to rotate synchronously in the sampling tube 5, so that the blade 85 can crush the sample in the sampling tube 5. In the process of crushing the sample in the sampling tube 5, the baffle 84 can be used to separate the sampling tube 5 into two cavities, so that the inner top of the sampling tube 5 is separated and processed, reducing the possibility of its inner top wall being contaminated, and when the sample is crushed, the heating unit 31 can be used to heat the water in the heating box 3 through an external power supply, so that the sampling tube 5 fixed in the mesh cover 43 will not fall over, thereby ensuring that the sample in the sampling tube 5 can be heated in a normal water bath, so that the pesticide residues are better dissolved from the pork tissue into the extraction solvent, thereby improving the extraction efficiency and ensuring that more residues are extracted for subsequent analysis. At the same time, in order to ensure the accuracy of the results, it is necessary to select multiple samples of the same type for In order to carry out detection, in the face of the preparation of multiple samples, multiple sampling tubes 5 and multiple crushing components 8 can be provided, and the second servo motor 76 can be started to make the driving rod 73 rotate in the limiting seat 75, and the gear 74 and the gear belt 72 can be used to make the multiple driving rods 73 in the sealing cover 6 rotate synchronously, so that the connecting rods 83 at different positions rotate synchronously, and then the multiple blades 85 crush the samples in the sampling tubes 5 at different positions, and in the process of sample preparation, the first servo motor 27 can be started forward and reversely, so that the support rod 24 drives the support arm 25 to rotate synchronously, so that the limiting rod 26 rotates synchronously in the arc groove 22, and the fixedly connected heating box 3 also rotates synchronously, and because of the arrangement An arc groove 22 is provided so that the limit rod 26 can swing back and forth inside it, and the heating box 3 swings synchronously, so that the sampling tube 5 in the heating box 3 swings accordingly, and the swing amplitude is utilized to fully mix the sample in the sampling tube 5 with the sample diluent. However, after the sample residual liquid is prepared, the valve 93 of the circulation tube 91 can be opened to allow the sample residual liquid in the sampling tube 5 to flow into the circulation tube 91 through the connecting tube 51. Before the sample residual liquid enters the circulation tube 91, the sample residual liquid must first pass through the filter plate 92 to prevent sample impurities from entering the circulation tube 91. At the same time, since the sample residual liquid needs to be heated during the detection of pesticide and veterinary drug residues in pork, a small amount of floating oil will be generated in the heated sample residual liquid.Therefore, the filter plate 92 can be used to filter the floating oil in the sample residual liquid to a certain extent, so that the sample residual liquid passes through the circulation tube 91 and the delivery tube 94 and is transported to the detection tank of the detector 11, and the detector 11 is used to perform pesticide and veterinary drug detection operations on the sample residual liquid.

[0055] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for detecting pesticide and veterinary drug residues in agricultural products and foods, comprising a housing (1), wherein a detector (11) is installed inside the housing (1), characterized in that: A support mechanism (2) is provided on the upper surface of the shell (1), and the shell (1) is fixedly connected to a heating box (3) via the support mechanism (2); a heating unit (31) is fixedly installed in the middle of the interior of the heating box (3); evenly distributed limiting mechanisms (4) are arranged around the inner wall of the heating box (3); a sampling tube (5) is installed inside the limiting mechanism (4); a sealing cover (6) is threadedly connected to the top of the heating box (3); a driving mechanism (7) is provided on the upper surface of the sealing cover (6); the driving mechanism (7) comprises a driving rod (73) rotatably connected to the interior of the sealing cover (6); the driving rod (73) passes through the sealing cover (6) and is fixedly connected to a crushing assembly (8); The crushing assembly (8) comprises a partition (81) fixedly connected to the bottom of the driving rod (73); a cover plate (82) is fixedly connected to the bottom of the partition (81); a connecting rod (83) is fixedly connected to the middle of the bottom of the cover plate (82); and blades (85) arranged linearly are fixedly connected to the bottom end of the outer circular surface of the connecting rod (83); The inner bottom of the heating box (3) is provided with a conveying mechanism (9), a baffle (84) is fixedly connected to the middle of the outer circumferential surface of the connecting rod (83), the outer diameter of the baffle (84) is the same as the inner diameter of the sampling tube (5), a first fixing plate is fixedly connected to the outer edge of the top of the heating box (3), a second fixing plate of the same size as the first fixing plate is fixedly connected to the outer circumferential surface of the sealing cover (6), and bolts are threadedly connected to the middle of the first fixing plate and the second fixing plate; The driving mechanism (7) further comprises a limiting seat (75) fixedly connected to the upper surface of the sealing cover (6) and arranged in a circumferential manner, the inside of each limiting seat (75) is rotatably connected to a driving rod (73), and a second servo motor (76) is fixedly connected to the top end of the driving rod (73) located at the rear side of the sealing cover (6), and a handle is fixedly connected to the middle of the upper surface of the sealing cover (6); A gear (74) is fixedly connected to the upper end of the outer circumferential surface of the driving rod (73); a gear belt (72) is meshed and rotated with the outer circumferential surface of the gear (74); and a cover (71) for preventing the gear belt (72) from deviating in rotation angle is fixedly connected to the upper surface of the sealing cover (6); The bottom of the sampling tube (5) is fixedly connected to a connecting tube (51), the conveying mechanism (9) comprises a plurality of flow tubes (91) fixedly connected to the bottom of the heating box (3), the top of the flow tube (91) is threadedly connected to the inside of the connecting tube (51), the flow tube (91) passes through the heating box (3) and is provided with a valve (93), and the top opening of the flow tube (91) is fixedly connected to a filter plate (92); A delivery pipe (94) is installed at the bottom of the circulation pipe (91), and connecting sleeves (95) are fixedly connected to both ends of the delivery pipe (94), and the connecting sleeve (95) at one end of the delivery pipe (94) is threadedly connected to the bottom of the circulation pipe (91), and the connecting sleeve (95) at the other end of the delivery pipe (94) is threadedly connected to the detector (11).

2. The device for detecting agricultural product and food pesticide and veterinary drug residues according to claim 1, characterized in that: The limiting mechanism (4) comprises a first limiting plate (41) fixedly connected to the inner wall of the heating box (3); a connecting plate is fixedly connected to one side of the bottom of the first limiting plate (41); the first limiting plate (41) is fixedly connected to a second limiting plate (42) via the connecting plate; a placement slot is provided at the middle of the first limiting plate (41) and the second limiting plate (42); and a mesh cover (43) is fixedly connected to the bottom of the second limiting plate (42).

3. The device for detecting pesticide and veterinary drug residues in agricultural products and foods according to claim 2, characterized in that: The inner diameter of the top of the mesh cover (43) is the same as the outer diameter of the sampling tube (5); the inner wall of the slot of the first limit plate (41) is fixedly connected to spring telescopic rods (44) arranged in a circumference, and one end of each of the spring telescopic rods (44) is fixedly connected to a clamping plate (45).

4. The device for detecting pesticide and veterinary drug residues in agricultural products and foods according to claim 1, characterized in that: The support mechanism (2) comprises a vertical plate (21) fixedly connected to both sides of the upper surface of the shell (1); an arc-shaped groove (22) is provided inside the vertical plate (21); a support plate (23) is fixedly connected to a recessed portion of the top of the vertical plate (21); a first servo motor (27) is fixedly connected to one side of the outer surface of the support plate (23); an output end of the first servo motor (27) is fixedly connected to a support rod (24); the support rod (24) passes through the support plate (23) and is fixedly connected to the heating box (3).

5. The device for detecting agricultural product and food pesticide and veterinary drug residues according to claim 4, characterized in that: A support arm (25) is fixedly connected to the middle of the outer circumferential surface of the support rod (24), and a limiting rod (26) is fixedly connected to one side of the bottom of the support arm (25), and the limiting rod (26) is slidably connected to the arc groove (22).

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