Device for detecting pesticide and veterinary drug residues in food based on intelligent sensor

Abstract

The invention relates to the technical field of pesticide residue detection, and discloses an intelligent sensor-based pesticide and veterinary drug residue detection device in food, which comprises a feeding box, the bottom of the feeding box is fixedly connected with a valve hollow column, the bottom of the valve hollow column is fixedly connected with a compression tank, and the bottom of the compression tank is fixedly connected with a storage box. According to the fruit detection device, a pressing plate can compress an elastic telescopic rod and extrude fruits in a compression tank together, cell walls of the fruits can be destroyed, the accessibility and detection efficiency of the fruits can be improved, pesticide and veterinary drug residues are usually distributed in cell gaps, juice or epidermis of the fruits, and the pesticide and veterinary drug residues are not prone to damage. The residual pesticide and veterinary drug flows out along with the fruit juice, contact and analysis of subsequent detection are facilitated, the detection reliability of the device is improved, parallel experimental verification can be performed, random errors are reduced, errors caused by sample nonuniformity can be reduced, and the influence on the detection precision can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of pesticide residue detection, and in particular to a device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor. Background Art

[0002] When testing for pesticide and veterinary drug residues in food, traditional instruments rely on professional laboratory environments, are bulky and expensive, and require professional technicians to operate. They cannot be used in fields, farmers' markets, and other scenarios.

[0003] Patent publication number CN209215343U discloses a device for detecting pesticide residues in agricultural products. Existing food testing instruments are mostly cutting-edge devices. While accurate, they are expensive, and the testing process is complex and time-consuming. Some rapid detection methods, such as chemical analysis, are susceptible to interference during operation, have low sensitivity, and present shortcomings. This patent relates to a device for detecting pesticide residues in agricultural products, in which an extrusion cylinder is movably connected to an extrusion device via an extrusion shaft, the extrusion device is fixedly connected to an extrusion plate, a filter plate is fixedly disposed within the device body, and a pesticide detection sensor is placed within a test dish. The pesticide detection sensor is electrically connected to the controller's signal input terminal to form a signal acquisition circuit. The advantages of this patent are: the use of an extrusion cylinder facilitates liquid extraction from agricultural products, and control through a single-chip microcomputer makes the device for detecting pesticide residues in agricultural products more intelligent, improving detection accuracy, reducing costs, and facilitating its widespread adoption.

[0004] However, when the above device is used, it is difficult to achieve multi-scale detection during the fruit squeezing process, resulting in reduced detection efficiency. Therefore, a device for detecting pesticide residues in food based on an intelligent sensor is proposed to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor in view of the above-mentioned deficiencies in the prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a detection device for pesticide residues in food based on intelligent sensors, including a feed box, the bottom of the feed box is fixedly connected to a valve hollow column, the bottom of the valve hollow column is fixedly connected to a compression tank, the bottom of the compression tank is fixedly connected to a storage box, the bottom of the storage box is fixedly connected to a discharge pipe, the inner wall of the feed box is rotatably connected to a reciprocating screw, the top of the feed box is equipped with a motor, the circumferential surface of the reciprocating screw is movably connected to a cross plate, the inner wall of the compression tank is fixedly connected to a limiting column, and the cross plate The bottom of the container is fixedly connected with an elastic telescopic rod 1, the telescopic end of the elastic telescopic rod 1 is fixedly connected with a pressure plate, the inner wall of the cross plate is fixedly connected with a support column, the inner wall of the compression tank is fixedly connected with a filter plate, the bottom of the compression tank is fixedly connected with an elastic telescopic rod 2, the telescopic end of the elastic telescopic rod 2 is fixedly connected with a fixed circular plate, the top of the fixed circular plate is fixedly connected with a mobile column 1, the surface of the mobile column 1 is fixedly connected with a sealing ring, the inner wall of the storage box is provided with a Raman spectrum sensor, the inner wall of the feed box is provided with a promotion mechanism for pushing materials, and the inner wall of the storage box is fixed with a filter plate. A lifting mechanism for improving the detection accuracy is provided, the reciprocating screw is fixedly connected to the output end of the motor, the feed box is communicated with the valve hollow column, the valve hollow column is communicated with the compression tank, the cross plate is slidably connected to the circumferential surface of the limit column, the moving column is in contact with the filter plate, and the moving column is used to drive the fixed circular plate to move, the sealing ring is in contact with the filter plate, and the sealing ring is used to seal the filter plate, the sealing ring is in contact with the compression tank, the reciprocating screw is in contact with the compression tank, and the reciprocating screw is used to drive the cross plate to move up and down, so that the pressure plate will compress the spring The telescopic rod squeezes the fruit inside the compression tank together, which can destroy the cell wall of the fruit, improve the accessibility of the fruit and the efficiency of detection. Pesticide and veterinary drug residues are usually distributed in the cell gaps, juice or skin of the fruit. The residual pesticides and veterinary drugs flow out with the juice and are released from the solid matrix into the liquid environment, which is convenient for subsequent contact and analysis of detection, thereby improving the detection accuracy of the device on the fruit, improving the detection results of the device, improving the detection reliability of the device, and enabling parallel experimental verification, reducing random errors, reducing errors caused by sample heterogeneity, and avoiding affecting the detection accuracy.

[0007] Preferably, the promotion mechanism includes a slot block, a crushing blade, a rotating rod, and a push plate, the slot block is fixedly connected to the circumferential surface of the reciprocating screw rod, the crushing blade is fixedly connected to the inner wall of the slot block, the rotating rod is fixedly connected to the circumferential surface of the reciprocating screw rod, and the push plate is fixedly connected to the bottom of the rotating rod, the promotion mechanism also includes an L rod, a second moving column, a hinge block, a dredging rod, and a cylindrical tip, the L rod is fixedly connected to the circumferential surface of the support column, the second moving column is fixedly connected to the inner wall of the L rod, the hinge block is rotatably connected to the inner wall of the second moving column by a torsion spring, the dredging rod is fixedly connected to the circumferential surface of the hinge block, and the cylindrical tip is fixedly connected to the top of the second moving column. The push plate is in contact with the feed box, and is used to push the fruit pieces into the valve column. The dredging rod is in contact with the valve column, and is used to dredge the fruit pieces inside the valve column, so that the push plate can push the fruit pieces into the valve column during rotation, thereby improving the overall detection fluency of the device, accelerating the destruction of the fruit's organizational structure, releasing target analytes, and improving the accuracy and efficiency of subsequent detection. It can push the fruit pieces remaining inside the valve column to prevent the fruit pieces and fruit debris from clogging the valve column, thereby affecting the subsequent detection speed, and can improve the detection accuracy of the device and increase the service life of the device.

[0008] Preferably, the lifting mechanism includes a connecting arc block, a fixed column, and a cleaning plate, the connecting arc block is fixedly connected to the inner wall of the cross plate, the fixed column is fixedly connected to the circumferential surface of the connecting arc block, and the cleaning plate is fixedly connected to the circumferential surface of the fixed column. The lifting mechanism also includes a connecting block, an ethanol box, three elastic telescopic rods, a round block, a lower pressure column, and a sealing block. The connecting block is fixedly connected to the inner wall of the storage box, the ethanol box is fixedly connected to the inner wall of the connecting block, the three elastic telescopic rods are fixedly connected to the top of the ethanol box, the round block is fixedly connected to the telescopic end of the three elastic telescopic rods, the lower pressure column is fixedly connected to the inner wall of the round block, the sealing block is fixedly connected to the circumferential surface of the lower pressure column, the cleaning plate is in contact with the compression tank, and the cleaning plate is used to press the compression tank The inner wall of the compressed tank is cleaned, the downward pressure column is in contact with the ethanol box, and the downward pressure column is used to drive the sealing block to move, the sealing block is in contact with the ethanol box, and the sealing block is used to control the opening and closing state of the bottom opening of the ethanol box, so that the cleaning plate can clean the fruit juice and fruit debris remaining on the inner wall of the compressed tank, which can reduce the manual cleaning cost of the device, prevent the residual substances from the previous detection from interfering with subsequent detection, avoid cross-infection of samples, ensure the accuracy of the pesticide and veterinary drug residue detection results, increase the solubility and extraction efficiency of fruit juice, evenly disperse the fruit liquid, reduce the viscosity of the juice, avoid particle agglomeration or stratification, and make the test object evenly dispersed in the system, improve the repeatability and stability of the Raman signal, and improve the detection efficiency of the device.

[0009] The present invention adopts the above technical solution, which can bring the following beneficial effects: 1. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor, through the coordinated movement of a feeding box, a valve empty column, a compression tank, a storage box, a discharge pipe, a reciprocating screw, a cross plate, a limiting column, an elastic telescopic rod 1, a pressure plate, a support column, a filter plate, an elastic telescopic rod 2, a fixed circular plate, a movable column 1, and a sealing ring, causes the pressure plate to compress the elastic telescopic rod 1 and squeeze the fruit inside the compression tank, thereby destroying the cell walls of the fruit, thereby improving the accessibility of the fruit and the efficiency of detection. Pesticide and veterinary drug residues are usually distributed in the intercellular spaces, juice, or epidermis of the fruit, so that the residual pesticides and veterinary drugs flow out with the juice and are released from the solid matrix into the liquid environment, facilitating contact and analysis for subsequent detection, thereby improving the detection accuracy of the device for fruits, improving the detection results of the device, improving the detection reliability of the device, enabling parallel test verification, reducing random errors, reducing errors caused by sample heterogeneity, and avoiding affecting detection accuracy.

[0010] 2. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor, through the coordinated movement of the groove block, crushing blade, rotating rod, push plate, L rod, movable column 2, hinged block, dredging rod, and cylindrical tip, enables the push plate to push the fruit pieces into the valve hollow column during the rotation process, thereby improving the overall detection fluency of the device, accelerating the destruction of the fruit's tissue structure, releasing the target analyte, and improving the accuracy and efficiency of subsequent detection. It can push the fruit pieces remaining inside the valve hollow column to prevent the fruit pieces and fruit debris from clogging the valve hollow column, thereby affecting the subsequent detection speed, thereby improving the detection accuracy of the device and increasing the service life of the device.

[0011] 3. The intelligent sensor-based device for detecting pesticide and veterinary drug residues in food, through the coordinated movement of the connecting arc block, fixed column, cleaning plate, connecting block, ethanol box, elastic telescopic rod, round block, downward pressure column, and sealing block, enables the cleaning plate to clean the fruit juice and fruit debris remaining on the inner wall of the compression tank. This can reduce the manual cleaning cost of the device, prevent residual substances from the previous test from interfering with subsequent tests, avoid cross-infection of samples, ensure the accuracy of pesticide and veterinary drug residue test results, increase the solubility and extraction efficiency of fruit juice, evenly disperse fruit liquid, reduce the viscosity of the juice, avoid particle agglomeration or stratification, and evenly disperse the analyte in the system, thereby improving the repeatability and stability of the Raman signal and improving the detection efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A half-section diagram of the compression tank structure of the present invention; Figure 3 This is a schematic diagram of the reciprocating screw structure of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure at center A; Figure 5 For the present invention Figure 3 A magnified view of the structure at point B in the middle; Figure 6 A schematic diagram of the promotion mechanism of the present invention; Figure 7 For the present invention Figure 6 A magnified view of the structure at point C in the middle; Figure 8 This is a schematic diagram of the lifting mechanism of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of the structure at point D in the middle.

[0013] In the figure: 1, feed box; 2, valve empty column; 3, compression tank; 4, storage box; 5, discharge pipe; 6, reciprocating screw; 7, promotion mechanism; 8, lifting mechanism; 9, cross plate; 10, limit column; 11, elastic telescopic rod 1; 12, pressure plate; 13, support column; 14, filter plate; 15, elastic telescopic rod 2; 16, fixed circular plate; 17, movable column 1; 18, sealing ring; 701, slot block; 7 02. Crushing blade; 703. Rotating rod; 704. Push plate; 705. L rod; 706. Moving column 2; 707. Hinge block; 708. Clearing rod; 709. Cylindrical tip; 801. Connecting arc block; 802. Fixed column; 803. Cleaning plate; 804. Connecting block; 805. Ethanol box; 806. Elastic telescopic rod 3; 807. Round block; 808. Down-pressure column; 809. Sealing block. DETAILED DESCRIPTION

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] See also Figures 1-9One embodiment of the present invention is: a detection device for pesticide and veterinary drug residues in food based on intelligent sensors, comprising a feed box 1, a valve hollow column 2 is fixedly connected to the bottom of the feed box 1, a compression tank 3 is fixedly connected to the bottom of the compression tank 3, a storage box 4 is fixedly connected to the bottom of the storage box 4, a discharge pipe 5 is fixedly connected to the bottom of the storage box 4, the inner wall of the feed box 1 is rotatably connected to a reciprocating screw rod 6, a motor is installed on the top of the feed box 1, the circumferential surface of the reciprocating screw rod 6 is movably connected to a cross plate 9, the inner wall of the compression tank 3 is fixedly connected to a limiting column 10, The bottom of the character plate 9 is fixedly connected to an elastic telescopic rod 11, the telescopic end of the elastic telescopic rod 11 is fixedly connected to a pressure plate 12, the inner wall of the cross plate 9 is fixedly connected to a support column 13, the inner wall of the compression tank 3 is fixedly connected to a filter plate 14, the bottom of the compression tank 3 is fixedly connected to an elastic telescopic rod 2 15, the telescopic end of the elastic telescopic rod 2 15 is fixedly connected to a fixed circular plate 16, the top of the fixed circular plate 16 is fixedly connected to a movable column 17, the surface of the movable column 17 is fixedly connected to a sealing ring 18, and the inner wall of the storage box 4 is provided with a Raman spectrometer sensor; When the device is started, the operator first puts the fruit that needs to be tested for pesticide residues into the interior of the feed box 1 through the opening at the top of the feed box 1. At this time, the motor will start, and the output end of the motor will drive the reciprocating screw 6 to rotate. The rotation of the reciprocating screw 6 will drive the cross plate 9 to rotate, but the cross plate 9 is limited by the limiting column 10 at this time. The limiting column 10 will cause the cross plate 9 to be in the process of rotating the reciprocating screw 6. The cross plate 9 can only move up and down reciprocatingly through the reciprocating groove on the surface of the reciprocating screw 6. The up and down movement of the cross plate 9 will drive the elastic telescopic rod 11 to move, and the movement of the elastic telescopic rod 11 will drive the pressure plate 12 to move. While the pressure plate 12 moves, the feed box The fruit inside 1 will be discharged into the compression tank 3 through the valve hollow column 2. When the pressing plate 12 moves a certain distance, the pressing plate 12 will contact the fruit, and the cross plate 9 will continue to move downward. The cross plate 9 will continue to drive the pressing plate 12 to move downward through the elastic telescopic rod 11. At this time, the pressing plate 12 will compress the elastic telescopic rod 11 and squeeze the fruit inside the compression tank 3, which can destroy the cell wall of the fruit, improve the accessibility of the fruit and the efficiency of detection. Pesticide and veterinary drug residues are usually distributed in the intercellular space, juice or epidermis of the fruit. The residual pesticide and veterinary drug will flow out with the juice and be released from the solid matrix into the liquid environment, which is convenient for subsequent contact and analysis, and improves the detection accuracy of the device for the fruit. The inner wall of the feed box 1 is provided with a promotion mechanism 7 for pushing the material, the inner wall of the storage box 4 is provided with a lifting mechanism 8 for improving the detection accuracy, the reciprocating screw 6 is fixedly connected to the output end of the motor, the feed box 1 is communicated with the valve hollow column 2, the valve hollow column 2 is communicated with the compression tank 3, the cross plate 9 is slidably connected to the circumferential surface of the limit column 10, the moving column 17 is in contact with the filter plate 14, and the moving column 17 is used to drive the fixed circular plate 16 to move, the sealing ring 18 is in contact with the filter plate 14, and the sealing ring 18 is used to seal the filter plate 14, the sealing ring 18 is in contact with the compression tank 3, the reciprocating screw 6 is in contact with the compression tank 3, and the reciprocating screw 6 is used to drive the cross plate 9 to move up and down; When the device is started, the movement of the cross plate 9 will drive the column 13 to move. After the column 13 moves a certain distance, the column 13 will contact the moving column 17. At this time, the column 13 will continue to move downward through the compression of the elastic telescopic rod 11. The movement of the column 13 will push the moving column 17 to move downward. The movement of the moving column 17 will drive the sealing ring 18 to move. At the same time, the movement of the moving column 17 will drive the fixed circular plate 16 to move downward. During the movement of the sealing ring 18, the sealing ring 18 will open the opening at the bottom of the compression tank 3. When the column 13 is no longer in contact with the moving column 17, the elastic telescopic rod 11 will be pressed downward. The retractable rod 15 will drive the fixed circular plate 16 to reset through its own reset characteristics. The movement of the fixed circular plate 16 will drive the movable column 17 to move. The reset of the movable column 17 will drive the sealing ring 18 to reset. During this process, the fruit liquid will enter the two storage boxes 4 respectively under the filtration of the filter plate 14. At this time, the Raman spectroscopic sensors inside the two storage boxes 4 are started and perform pesticide residue detection on the fruit liquid, which can improve the detection results of the device, improve the detection reliability of the device, enable parallel experimental verification, reduce random errors, reduce errors caused by sample heterogeneity, and avoid affecting the detection accuracy.

[0016] The overall working principle: the pressing plate 12 will compress the elastic telescopic rod 11 and squeeze the fruit inside the compression tank 3, which can destroy the cell wall of the fruit, improve the accessibility of the fruit and the efficiency of detection, and the pesticide and veterinary drug residues are usually distributed in the cell gaps, juice or epidermis of the fruit, so that the residual pesticides and veterinary drugs flow out with the juice and are released from the solid matrix into the liquid environment, which is convenient for subsequent contact and analysis of detection, and improves the detection accuracy of the device for fruits. During this process, the fruit liquid will enter the two storage boxes 4 respectively under the filtration of the filter plate 14. At this time, the Raman spectroscopy sensors inside the two storage boxes 4 are started and the fruit liquid is tested for pesticide and veterinary drug residues, which can improve the detection results of the device, improve the detection reliability of the device, and can be verified by parallel experiments, reduce random errors, reduce errors caused by sample heterogeneity, and avoid affecting the detection accuracy.

[0017] See also Figures 1-9In another embodiment of the present invention, based on the above embodiment, the promotion mechanism 7 includes a groove block 701, a crushing blade plate 702, a rotating rod 703, and a push plate 704. The groove block 701 is fixedly connected to the circumferential surface of the reciprocating screw rod 6, the crushing blade plate 702 is fixedly connected to the inner wall of the groove block 701, the rotating rod 703 is fixedly connected to the circumferential surface of the reciprocating screw rod 6, and the push plate 704 is fixedly connected to the bottom of the rotating rod 703. When the device is started, the rotation of the reciprocating screw 6 drives the groove block 701 to rotate, and the rotation of the groove block 701 drives the crushing blade 702 to rotate. During the rotation, the crushing blade 702 can perform preliminary cell wall destruction on the fruit inside the feeding box 1. At the same time, during the rotation of the reciprocating screw 6, the rotation of the reciprocating screw 6 drives the rotating rod 703 to rotate, and the rotation of the rotating rod 703 drives the push plate 704 to rotate. During the rotation, the push plate 704 can push the fruit pieces into the valve hollow column 2, thereby improving the overall detection fluency of the device, accelerating the destruction of the tissue structure of the fruit, releasing the target analyte, and improving the accuracy and efficiency of subsequent detection; The promotion mechanism 7 also includes an L-rod 705, a second movable column 706, a hinge block 707, a dredging rod 708, and a cylindrical tip 709. The L-rod 705 is fixedly connected to the circumferential surface of the support column 13, the second movable column 706 is fixedly connected to the inner wall of the L-rod 705, the hinge block 707 is rotatably connected to the inner wall of the second movable column 706 via a torsion spring, the dredging rod 708 is fixedly connected to the circumferential surface of the hinge block 707, and the cylindrical tip 709 is fixedly connected to the top of the second movable column 706. The push plate 704 is in contact with the feed box 1 and is used to push the fruit pieces into the valve hollow column 2. The dredging rod 708 is in contact with the valve hollow column 2 and is used to dredge the fruit pieces inside the valve hollow column 2. When the device is started, the movement of the support column 13 will drive the L-rod 705 to move, the movement of the L-rod 705 will drive the second moving column 706 to move, the movement of the second moving column 706 will drive the hinge block 707 to move, the movement of the hinge block 707 will drive the dredging rod 708 to move, and at the same time, the movement of the second moving column 706 will drive the cylindrical tip 709 to move. The movement of the cylindrical tip 709 and the dredging rod 708 can dredge the interior of the valve hollow column 2 and push out the fruit pieces remaining in the valve hollow column 2, preventing the fruit pieces and fruit debris from clogging the valve hollow column 2, thereby affecting the subsequent detection speed, thereby improving the detection accuracy of the device and increasing the service life of the device. The lifting mechanism 8 includes a connecting arc block 801, a fixed column 802, and a cleaning plate 803. The connecting arc block 801 is fixedly connected to the inner wall of the cross plate 9, the fixed column 802 is fixedly connected to the circumferential surface of the connecting arc block 801, and the cleaning plate 803 is fixedly connected to the circumferential surface of the fixed column 802. When the device is started, the movement of the cross plate 9 drives the connecting arc block 801 to move, the movement of the connecting arc block 801 drives the fixed column 802 to move, and the movement of the fixed column 802 drives the cleaning plate 803 to move. During the reciprocating movement of the cleaning plate 803, the cleaning plate 803 can clean the fruit juice and fruit debris remaining on the inner wall of the compression tank 3, which can reduce the manual cleaning cost of the device, prevent the residual substances from the previous test from interfering with subsequent tests, avoid cross-infection of samples, and ensure the accuracy of the pesticide residue test results. The lifting mechanism 8 also includes a connecting block 804, an ethanol box 805, an elastic telescopic rod three 806, a round block 807, a lower pressure column 808, and a sealing block 809. The connecting block 804 is fixedly connected to the inner wall of the storage box 4, the ethanol box 805 is fixedly connected to the inner wall of the connecting block 804, the elastic telescopic rod three 806 is fixedly connected to the top of the ethanol box 805, the round block 807 is fixedly connected to the telescopic end of the elastic telescopic rod three 806, the lower pressure column 808 is fixedly connected to the inner wall of the round block 807, and the sealing block 809 is fixedly connected to the circumferential surface of the lower pressure column 808. The cleaning plate 803 is in contact with the compression tank 3, and the cleaning plate 803 is used to clean the inner wall of the compression tank 3. The lower pressure column 808 is in contact with the ethanol box 805, and the lower pressure column 808 is used to drive the sealing block 809 to move. The sealing block 809 is in contact with the ethanol box 805, and the sealing block 809 is used to control the opening and closing state of the bottom opening of the ethanol box 805. When the device is started, the fixed circular plate 16 will contact the round block 807 and push the round block 807 to move downward during the downward movement. The downward movement of the round block 807 will compress the elastic telescopic rod 3 806. At the same time, the movement of the round block 807 will drive the downward pressure column 808 to move, and the movement of the downward pressure column 808 will drive the sealing block 809 to move. After the sealing block 809 moves a certain distance, the sealing block 809 will open the opening at the bottom of the ethanol box 805. At this time, the ethanol liquid inside the ethanol box 805 will flow into the interior of the storage box 4 through the opening opened by the sealing block 809 and merge with the fruit juice inside the storage box 4, which can increase the solubility and extraction efficiency of the fruit juice, evenly disperse the fruit liquid, reduce the viscosity of the juice, avoid particle agglomeration or stratification, and make the analyte evenly dispersed in the system, thereby improving the repeatability and stability of the Raman signal and improving the detection efficiency of the device.

[0018] Overall working principle: The rotation of the rotating rod 703 will drive the push plate 704 to rotate. During the rotation process, the push plate 704 can push the fruit pieces into the valve hollow column 2, thereby improving the overall detection fluency of the device, accelerating the destruction of the organizational structure of the fruit, releasing the target analyte, and improving the accuracy and efficiency of subsequent detection. The movement of the cylindrical tip 709 and the dredging rod 708 can dredge the interior of the valve hollow column 2, and can push the fruit pieces remaining in the valve hollow column 2, preventing the fruit pieces and fruit debris from clogging the valve hollow column 2, thereby affecting the subsequent detection speed, thereby improving the detection accuracy of the device and increasing the service life of the device. It can clean the fruit juice and fruit debris remaining on the inner wall of the compression tank 3, reduce the manual cleaning cost of the device, prevent the residual substances from the previous detection from interfering with subsequent detection, avoid cross-infection of samples, and ensure the accuracy of the pesticide residue detection results. The ethanol liquid inside the ethanol box 805 will flow into the interior of the storage box 4 through the opening opened by the sealing block 809 and merge with the fruit juice inside the storage box 4, which can increase the solubility and extraction efficiency of the fruit juice, evenly disperse the fruit liquid, reduce the viscosity of the juice, avoid particle agglomeration or stratification, make the test object evenly dispersed in the system, improve the repeatability and stability of the Raman signal, and improve the detection efficiency of the device.

[0019] The present invention provides a device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor. There are many methods and approaches for implementing this technical solution. The above is only a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor, comprising a feeding box (1), characterized in that: The bottom of the feed box (1) is fixedly connected to a valve hollow column (2), the bottom of the valve hollow column (2) is fixedly connected to a compression tank (3), the bottom of the compression tank (3) is fixedly connected to a storage box (4), the bottom of the storage box (4) is fixedly connected to a discharge pipe (5), the inner wall of the feed box (1) is rotatably connected to a reciprocating screw (6), a motor is installed on the top of the feed box (1), the circumferential surface of the reciprocating screw (6) is movably connected to a cross plate (9), the inner wall of the compression tank (3) is fixedly connected to a limiting column (10), and the bottom of the cross plate (9) is fixedly connected to an elastic telescopic rod (11 ), the telescopic end of the elastic telescopic rod 1 (11) is fixedly connected to a pressure plate (12), the inner wall of the cross plate (9) is fixedly connected to a support column (13), the inner wall of the compression tank (3) is fixedly connected to a filter plate (14), the bottom of the compression tank (3) is fixedly connected to the elastic telescopic rod 2 (15), the telescopic end of the elastic telescopic rod 2 (15) is fixedly connected to a fixed circular plate (16), the top of the fixed circular plate (16) is fixedly connected to a moving column 1 (17), the surface of the moving column 1 (17) is fixedly connected to a sealing ring (18), and the inner wall of the storage box (4) is provided with a Raman spectrum sensor.

2. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor according to claim 1, characterized in that: The inner wall of the feed box (1) is provided with a promotion mechanism (7) for pushing the material, the inner wall of the storage box (4) is provided with a lifting mechanism (8) for improving the detection accuracy, the reciprocating screw (6) is fixedly connected to the output end of the motor, the feed box (1) is connected to the valve hollow column (2), the valve hollow column (2) is connected to the compression tank (3), the cross plate (9) is slidably connected to the circumferential surface of the limit column (10), the movable column (17) is in contact with the filter plate (14), and the movable column (17) is used to drive the fixed circular plate (16) to move.

3. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor according to claim 2, characterized in that: The sealing ring (18) contacts the filter plate (14), and the sealing ring (18) is used to seal the filter plate (14). The sealing ring (18) contacts the compression tank (3). The reciprocating screw (6) contacts the compression tank (3), and the reciprocating screw (6) is used to drive the cross plate (9) to move up and down.

4. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor according to claim 3, characterized in that: The promoting mechanism (7) comprises a slot block (701), a crushing blade (702), a rotating rod (703), and a push plate (704); the slot block (701) is fixedly connected to the circumferential surface of the reciprocating screw (6); the crushing blade (702) is fixedly connected to the inner wall of the slot block (701); the rotating rod (703) is fixedly connected to the circumferential surface of the reciprocating screw (6); and the push plate (704) is fixedly connected to the bottom of the rotating rod (703).

5. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor according to claim 4, characterized in that: The promotion mechanism (7) also includes an L-rod (705), a movable column (706), a hinge block (707), a dredging rod (708), and a cylindrical tip (709). The L-rod (705) is fixedly connected to the circumferential surface of the support column (13), the movable column (706) is fixedly connected to the inner wall of the L-rod (705), the hinge block (707) is rotatably connected to the inner wall of the movable column (706) via a torsion spring, the dredging rod (708) is fixedly connected to the circumferential surface of the hinge block (707), and the cylindrical tip (709) is fixedly connected to the top of the movable column (706).

6. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor according to claim 5, characterized in that: The push plate (704) contacts the feed box (1), and the push plate (704) is used to push the fruit pieces into the valve hollow column (2); the dredging rod (708) contacts the valve hollow column (2), and the dredging rod (708) is used to dredge the fruit pieces inside the valve hollow column (2).

7. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor according to claim 6, characterized in that: The lifting mechanism (8) comprises a connecting arc block (801), a fixing column (802), and a cleaning plate (803); the connecting arc block (801) is fixedly connected to the inner wall of the cross plate (9); the fixing column (802) is fixedly connected to the circumferential surface of the connecting arc block (801); and the cleaning plate (803) is fixedly connected to the circumferential surface of the fixing column (802).

8. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor according to claim 7, characterized in that: The lifting mechanism (8) also includes a connecting block (804), an ethanol box (805), an elastic telescopic rod three (806), a round block (807), a lower pressure column (808), and a sealing block (809). The connecting block (804) is fixedly connected to the inner wall of the storage box (4), the ethanol box (805) is fixedly connected to the inner wall of the connecting block (804), the elastic telescopic rod three (806) is fixedly connected to the top of the ethanol box (805), the round block (807) is fixedly connected to the telescopic end of the elastic telescopic rod three (806), the lower pressure column (808) is fixedly connected to the inner wall of the round block (807), and the sealing block (809) is fixedly connected to the circumferential surface of the lower pressure column (808).

9. The device for detecting pesticide and veterinary drug residues in food based on an intelligent sensor according to claim 8, characterized in that: The cleaning plate (803) is in contact with the compression tank (3), and the cleaning plate (803) is used to clean the inner wall of the compression tank (3); the lower pressure column (808) is in contact with the ethanol box (805), and the lower pressure column (808) is used to drive the sealing block (809) to move; the sealing block (809) is in contact with the ethanol box (805), and the sealing block (809) is used to control the opening and closing state of the bottom opening of the ethanol box (805).

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