Device for detecting pesticide residues on surfaces of agricultural products

Abstract

The utility model discloses an agricultural product surface pesticide residue detection device, which belongs to the technical field of pesticide detection, and comprises a detector for detecting pesticide and a pretreatment barrel arranged at the top of the detector, a barrel cover is arranged at the top of the pretreatment barrel, and the top of the barrel cover is rotatably connected with a movable sleeve through a bearing. According to the agricultural product pretreatment device, water is fed into the flow dividing pipe through the water supply assembly, then the water is sprayed outwards from the spray head, the crops are sprayed in all directions in cooperation with the rotating net frame, the agricultural product pretreatment device is simple in structure and convenient to use, and the agricultural product pretreatment device is suitable for popularization and application. According to the agricultural pesticide detector, the agricultural pesticide can be dissolved in water, pesticide can be uniformly separated through stirring of the mixing assembly, it is ensured that a detection probe on the detector can accurately measure the pesticide, different crops can be stored through a net frame, and the situation that fixing is unstable due to a clamping mode is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pesticide detection, in particular to a device for detecting pesticide residues on the surface of agricultural products. Background Art

[0002] There are many types of rapid pesticide residue detection methods, which can be divided into two categories based on their principles: biochemical assays and chromatographic assays. Among them, the enzyme inhibition rate method in the biochemical assay is characterized by rapidity, sensitivity, ease of operation, and low cost.

[0003] In the prior art, a Chinese utility model with authorization announcement number CN218995332U discloses a device for detecting pesticide residues on the surface of agricultural products, which relates to the field of agricultural product pesticide detection. The device includes a pesticide detector and a sampling box. The sampling box has a pesticide treatment chamber on its upper side, a pesticide channel at its bottom, and a drive motor mounted on its rear sidewall. The output end of the drive motor extends into the pesticide treatment chamber and is connected to a turntable. The inner end of a second screw is movably connected to an arc-shaped plate, and the arc-shaped inner wall of the arc-shaped plate is provided with spray holes and flexible bristles spaced apart from each other. The device sprays cleaning liquid through the spray holes on the arc-shaped plate to clean the fruit. At the same time, the fruit rotates and rubs against the flexible bristles, effectively cleaning the pesticides from the fruit surface. The pesticide water produced by the cleaning is detected by the pesticide detector through the pesticide channel, effectively improving detection efficiency.

[0004] In the above technical solution, crops are clamped by a squeeze disk and a turntable, and then driven to rotate, and the residual pesticides on the surface of the crops are cleaned using spray holes and flexible bristles. However, the residual pesticides on the contact surface of the squeeze disk and the turntable are difficult to separate, resulting in inaccurate measurement results and certain errors. At the same time, whether the pesticide is dissolved in water and whether the dissolution can be guaranteed to be uniform will cause certain errors in the detection structure. Utility Model Content

[0005] The purpose of the present utility model is to provide a device for detecting pesticide residues on the surface of agricultural products, which comprehensively removes residual pesticides on the surface of crops by spraying, dissolves them in water, and then stirs the solution to ensure the uniformity of the pesticide and the accuracy of the detection, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting pesticide residues on the surface of agricultural products, comprising a detector for detecting pesticides and a pretreatment barrel installed on the top of the detector, a barrel cover installed on the top of the pretreatment barrel, the top of the barrel cover is rotatably connected to a movable sleeve through a bearing, the inner cavity of the movable sleeve is movably provided with a connecting rod, the bottom end of the connecting rod passes through the inner cavity of the pretreatment barrel and is fixed with a net frame for storing agricultural products, a diversion pipe is embedded in the interior of the pretreatment barrel, the inner side of the diversion pipe is connected to a nozzle, a water cup is placed on the side of the detector, a water supply assembly is provided on the outside of the pretreatment barrel, a driving assembly for rotating the connecting rod is provided on the top of the barrel cover, and a mixing assembly for stirring the extract is provided at the bottom of the inner cavity of the pretreatment barrel.

[0007] Preferably, the water supply assembly includes a micro water pump fixed on one side of the top of the detection equipment, the water inlet of the micro water pump is connected to a water inlet hose, the end of the water inlet hose away from the micro water pump passes through the top of the water cup to the inner cavity, the water outlet of the micro water pump is connected to a water outlet pipe, the end of the water outlet pipe away from the micro water pump passes through the pretreatment barrel and is connected to the diversion pipe.

[0008] Preferably, the drive assembly includes a fixed box fixed to the top of the barrel cover, a drive motor is fixed to the top of the fixed box, the output shaft of the drive motor passes through the inner cavity of the fixed box and is fixed with a drive gear, and a driven gear meshing with the drive gear is fixed to the outside of the movable sleeve.

[0009] Preferably, the mixing assembly includes a stirring motor embedded in the bottom of the inner cavity of the pretreatment barrel, and the output shaft of the stirring motor is fixed with a stirring impeller, and the stirring impeller is located below the mesh frame.

[0010] Preferably, the outer side of the movable sleeve is threadedly connected with a locking bolt, and one end of the locking bolt passes through the inner cavity of the movable sleeve and fits with the connecting rod.

[0011] Preferably, detection probes are provided on both sides of the top of the detector, and the detection probes extend into the inner cavity of the pretreatment barrel and are located outside the stirring impeller.

[0012] Preferably, the nozzle is arranged in an inclined shape, and the nozzle is divided into two layers, upper and lower layers.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model passes water into the diversion pipe through the water supply component, and then sprays it outward from the nozzle, cooperating with the rotating net frame to spray the crops in all directions, so that the crops remaining on the surface of the crops are dissolved in the water, and then the mixing component is stirred to make the pesticides evenly distributed, ensuring that the detection probe on the detector can measure accurately. In addition, the net frame can be used to store different crops, avoiding unstable fixation caused by clamping.

[0015] 2. The utility model facilitates adjustment of the position of the connecting rod by means of the locking bolt, and can separate residual pesticides on the surface of crops by soaking and spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the pretreatment barrel of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the barrel cover and the connecting rod of the utility model;

[0020] Figure 5 It is a schematic top view of the three-dimensional structure of the barrel cover of the present invention.

[0021] Numbers in the figure: 1. Detector; 2. Pretreatment barrel; 3. Barrel cover; 4. Movable sleeve; 5. Connecting rod; 6. Mesh frame; 7. Diverter pipe; 8. Nozzle; 9. Water cup; 10. Water supply assembly; 101. Micro water pump; 102. Water inlet hose; 103. Water outlet pipe; 11. Drive assembly; 111. Fixed box; 112. Drive motor; 113. Drive gear; 114. Driven gear; 12. Mixing assembly; 121. Stirring motor; 122. Stirring impeller; 13. Locking bolt; 14. Detection probe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0023] The utility model provides Figures 1 to 5The device for detecting pesticide residues on the surface of agricultural products shown in the figure comprises a detector 1 for detecting pesticides and a pretreatment barrel 2 mounted on the top of the detector 1. A barrel cover 3 is mounted on the top of the pretreatment barrel 2. A movable sleeve 4 is rotatably connected to the top of the barrel cover 3 via a bearing. A connecting rod 5 is movably provided in the inner cavity of the movable sleeve 4. The bottom end of the connecting rod 5 passes through the inner cavity of the pretreatment barrel 2 and is fixed with a net frame 6 for storing agricultural products. A diverter pipe 7 is embedded in the interior of the pretreatment barrel 2. A nozzle 8 is connected to the inner side of the diverter pipe 7. A water cup 9 is placed on the side of the detector 1. A water supply component 10 is provided on the outer side of the pretreatment barrel 2. A driving component 11 for rotating the connecting rod 5 is provided on the top of the barrel cover 3. A mixing component 12 for stirring the extract is provided at the bottom of the inner cavity of the pretreatment barrel 2.

[0024] Water is passed into the diversion pipe 7 through the water supply component 10, and then sprayed outward from the nozzle 8, cooperating with the rotating mesh frame 6 to spray the crops in all directions, so that the crops remaining on the surface of the crops are dissolved in the water. After being stirred by the mixing component 12, the pesticides are evenly separated, ensuring that the detection probe 14 on the detector 1 can accurately measure. In addition, the mesh frame 6 can be used to store different crops, avoiding unstable fixation caused by clamping.

[0025] The water supply assembly 10 includes a micro water pump 101 fixed on one side of the top of the detection equipment. The water inlet of the micro water pump 101 is connected to a water inlet hose 102. The end of the water inlet hose 102 away from the micro water pump 101 passes through the top of the water cup 9 to the inner cavity. The water outlet of the micro water pump 101 is connected to a water outlet pipe 103. The end of the water outlet pipe 103 away from the micro water pump 101 passes through the pretreatment barrel 2 and is connected to the diversion pipe 7. The clean water in the water cup 9 is introduced into the diversion pipe 7 through the micro water pump 101 through the water outlet pipe 103, and then injected into the pretreatment barrel 2 through the nozzle 8. The clean water sprayed from the nozzle 8 can directly spray the crops in the net frame 6, or soak the crops in water to separate pesticides from agricultural products.

[0026] The driving assembly 11 includes a fixed box 111 fixed to the top of the barrel cover 3, and a driving motor 112 is fixed to the top of the fixed box 111. The output shaft of the driving motor 112 passes through the inner cavity of the fixed box 111 and is fixed with a driving gear 113. A driven gear 114 engaged with the driving gear 113 is fixed to the outside of the movable sleeve 4. The driving motor 112 drives the driving gear 113 to rotate, and then the driving gear 113 drives the driven gear 114 on the outside of the movable sleeve 4 to rotate, driving the movable sleeve 4, thereby rotating the connecting rod 5, and cooperating with the sprinkler head 8 to spray the agricultural products in all directions to ensure the removal of pesticides.

[0027] The mixing assembly 12 includes a stirring motor 121 embedded in the bottom of the inner cavity of the pretreatment barrel 2. The output shaft of the stirring motor 121 is fixed with a stirring impeller 122. The stirring impeller 122 is located below the mesh frame 6. The stirring motor 121 drives the stirring impeller 122 to rotate, stirring the solution inside the pretreatment barrel 2 to ensure that the pesticide dissolved in the water is evenly distributed.

[0028] The outer side of the movable sleeve 4 is threadedly connected to a locking bolt 13, one end of the locking bolt 13 passes through the inner cavity of the movable sleeve 4 and fits with the connecting rod 5. Through the cooperation of the locking bolt 13, the position of the connecting rod 5 can be easily adjusted, and the residual pesticides on the surface of the crops can be separated by soaking and spraying.

[0029] Detection probes 14 are provided on both sides of the top of the detector 1. The detection probes 14 extend into the inner cavity of the pretreatment barrel 2 and are located on the outside of the stirring impeller 122. By setting the position of the detection probe 14, the collision between the stirring impeller 122 and the detection probe 14 is avoided, while the accuracy of the detection of the detection probe 14 can be ensured.

[0030] The nozzle 8 is arranged in an inclined shape and is divided into two layers, an upper layer and an lower layer. By setting the angle of the nozzle 8, it is ensured that the nozzle 8 can spray the crops inside the net frame 6 from different angles to remove the pesticide residue on the surface.

[0031] During specific use, a sufficient amount of aqueous solution is added to the water cup 9, and then the agricultural products to be tested are placed inside the net frame 6. Then the barrel cover 3 is clamped on the top of the pretreatment barrel 2, and the micro water pump 101 is started. The micro water pump 101 discharges the aqueous solution in the water cup 9 into the diversion pipe 7 through the water inlet hose 102, and then sprays it into the pretreatment barrel 2 from the nozzle 8. Subsequently, the drive motor 112 is started, and the drive motor 112 drives the drive gear 113 to rotate. Then the drive gear 113 drives the movable sleeve 4 to rotate through the driven gear 114. Then, the movable sleeve 4 drives the connecting rod 5 and the net frame 6 to rotate using the locking bolt 13, so that the crops in the net frame 6 are cleaned in all directions. Finally, the stirring motor 121 is started, and the stirring motor 121 drives the stirring impeller 122 to rotate to stir the aqueous solution dissolved in the pesticide to ensure that the pesticide is evenly distributed. Then, the detector 1 is turned on and the detection probe 14 is used to detect the pesticide concentration in the aqueous solution. The amount of pesticide residue on the surface of the crop is calculated based on the amount of aqueous solution used.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting pesticide residues on the surface of agricultural products, comprising a detector (1) for detecting pesticides and a pretreatment barrel (2) mounted on top of the detector (1), characterized in that: The top of the pretreatment barrel (2) is provided with a barrel cover (3), the top of the barrel cover (3) is rotatably connected to a movable sleeve (4) through a bearing, the inner cavity of the movable sleeve (4) is movably provided with a connecting rod (5), the bottom end of the connecting rod (5) penetrates the inner cavity of the pretreatment barrel (2) and is fixed with a net frame (6) for storing agricultural products, a diversion pipe (7) is embedded in the interior of the pretreatment barrel (2), the inner side of the diversion pipe (7) is connected to a nozzle (8), a water cup (9) is placed on the side of the detector (1), a water supply component (10) is provided on the outer side of the pretreatment barrel (2), a driving component (11) for rotating the connecting rod (5) is provided on the top of the barrel cover (3), and a mixing component (12) for stirring the extract is provided at the bottom of the inner cavity of the pretreatment barrel (2).

2. The device for detecting pesticide residues on the surface of agricultural products according to claim 1, characterized in that: The water supply assembly (10) comprises a micro water pump (101) fixed on one side of the top of the detection device; the water inlet of the micro water pump (101) is connected to a water inlet hose (102); the end of the water inlet hose (102) away from the micro water pump (101) passes through the top of the water cup (9) to the inner cavity; the water outlet of the micro water pump (101) is connected to a water outlet pipe (103); the end of the water outlet pipe (103) away from the micro water pump (101) passes through the pretreatment barrel (2) and is connected to the diversion pipe (7).

3. The device for detecting pesticide residues on the surface of agricultural products according to claim 1, characterized in that: The driving assembly (11) comprises a fixed box (111) fixed to the top of the barrel cover (3); a driving motor (112) is fixed to the top of the fixed box (111); an output shaft of the driving motor (112) passes through the inner cavity of the fixed box (111) and is fixed with a driving gear (113); and a driven gear (114) meshing with the driving gear (113) is fixed to the outer side of the movable sleeve (4).

4. The device for detecting pesticide residues on the surface of agricultural products according to claim 1, characterized in that: The mixing assembly (12) comprises a stirring motor (121) embedded in the bottom of the inner cavity of the pretreatment barrel (2); an output shaft of the stirring motor (121) is fixed with a stirring impeller (122); and the stirring impeller (122) is located below the mesh frame (6).

5. The device for detecting pesticide residues on the surface of agricultural products according to claim 1, characterized in that: The outer side of the movable sleeve (4) is threadedly connected to a locking bolt (13), and one end of the locking bolt (13) penetrates into the inner cavity of the movable sleeve (4) and fits with the connecting rod (5).

6. The device for detecting pesticide residues on the surface of agricultural products according to claim 1, characterized in that: Detection probes (14) are provided on both sides of the top of the detector (1), and the detection probes (14) extend into the inner cavity of the pretreatment barrel (2) and are located outside the stirring impeller (122).

7. The device for detecting pesticide residues on the surface of agricultural products according to claim 1, characterized in that: The nozzle (8) is arranged in an inclined shape, and the nozzle (8) is divided into two layers, an upper layer and an lower layer.

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