Agricultural product pesticide residue extraction device for pesticide residue detection

Abstract

The agricultural product pesticide residue extraction device for pesticide residue detection comprises an extraction part and an extrusion part, the extraction part comprises an extraction tank, a hollow cavity is vertically formed in the center of the extraction tank in a penetrating mode, a liquid adding cylinder is vertically and fixedly communicated with the top face of the extraction tank, and a liquid discharging pipe is vertically and fixedly communicated with the bottom face of the extraction tank; the extrusion part comprises a mesh cylinder, the mesh cylinder is vertically inserted into the extraction tank in a penetrating manner, a cloth cylinder is fixed on the inner wall of the mesh cylinder, a screw cylinder is fixed on the top surface of the mesh cylinder in a penetrating manner, a screw cover plate is assembled on the screw cylinder, and a screw hole cylinder is fixed on the bottom surface of the mesh cylinder in a penetrating manner. The utility model overcomes the problems that the existing crushed juice is filtered by a single filter screen, and the filtering range is small, so that impurities cannot be completely filtered, and the cleanliness of later detection liquid is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural product detection devices, in particular to an agricultural product pesticide residue extraction device for pesticide residue detection. Background Technique

[0002] Before detecting pesticides in agricultural products, it is necessary to extract the pesticide residues in the agricultural products. The extraction of pesticide residues in agricultural products is to separate various pesticides remaining in the sample by using a suitable organic solvent and method. When separating, the agricultural products are crushed into a slurry, and then an organic solvent is added to make a detection solution for detection.

[0003] There is a prior art with the publication number CN215843379U and the name of an agricultural product pesticide residue extraction device for pesticide residue detection, which includes a housing. By setting a cylinder, a squeezing plate, a first motor, squeezing rollers, a first cutting knife, a fixing plate, a sealing plate, a slider, a second motor, a protective plate, a screw, a protective frame, a third motor, a stirring roller and a second cutting knife, due to the shape of the inner top of the housing, it is convenient for the agricultural products to be located between the two squeezing rollers. The squeezing plate prevents spherical agricultural products from not being able to be squeezed by the squeezing rollers, improving the use effect. Since the first cutting knives are arranged equidistantly on the inner side of the housing, and the first cutting knives are symmetrically arranged at the left and right ends of the inner side of the housing, and the first cutting knives and the second cutting knives are arranged in a cross pattern, the crushing effect on the agricultural products is improved, facilitating extraction. By controlling the time when the second motor drives the screw to make the slider drive the sealing plate to move, the crushing time of the agricultural products is controlled, improving the crushing effect.

[0004] However, after the above-mentioned agricultural products are crushed, after filtering out the impurities after crushing the agricultural products, the crushed juice is filtered by a single filter screen. The single filter screen filtration treatment has a small filtration range, resulting in incomplete filtration of impurities, affecting the cleanliness of the later detection solution. Content of the Utility Model

[0005] The purpose of the utility model is to provide an agricultural product pesticide residue extraction device for pesticide residue detection, aiming to improve the above problems.

[0006] The utility model is realized as follows:

[0007] An agricultural product pesticide residue extraction device for pesticide residue detection, comprising an extraction part and an extrusion part. The extraction part includes an extraction tank. A hollow cavity is vertically penetrated and provided at the center of the extraction tank. A liquid adding cylinder is vertically connected and fixed to the top surface of the extraction tank. A drain pipe is vertically connected and fixed to the bottom surface of the extraction tank. A water pump is assembled and connected to the drain pipe. A support is vertically arranged below the extraction tank. The extrusion part includes a net cylinder. The net cylinder is vertically penetrated and inserted into the extraction tank. A cloth cylinder is fixed to the inner wall of the net cylinder. A screw cylinder is fixedly penetrated through the top surface of the net cylinder. A screw cover plate is assembled on the screw cylinder. A screw hole cylinder is fixedly penetrated through the bottom surface of the net cylinder. A screw rod is vertically threaded and installed in the screw hole cylinder. The top end of the screw rod is horizontally rotatably connected to a pressing plate. The outer walls of the screw cylinder and the screw hole cylinder are respectively fixed to the upper and lower ends of the extraction tank.

[0008] Further, the screw cover plate is threadedly assembled and connected with the screw cylinder, and a sliding column is vertically penetrated and installed on the screw cover plate.

[0009] Further, a baffle is horizontally inserted into the extraction tank on the bottom surface of the sliding column, and the top surface of the baffle is fixedly connected to the bottom end of the sliding column.

[0010] Further, a downward pressing spring is vertically sleeved on the outer part of the sliding column, and the two ends of the downward pressing spring are respectively fixed to the top end of the sliding column and the screw cover plate.

[0011] Further, a support spring is vertically fixed to the bottom surface of the extraction tank, and the bottom end of the support spring is fixed to the top surface of the support.

[0012] Further, a vibration motor is vertically fixed to the outer wall of the extraction tank.

[0013] Further, a valve is assembled and connected to the liquid adding cylinder.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: During use, disassemble the screw cover plate in the screw cylinder of the net cylinder, then place the agricultural product sample in the net cylinder, and then assemble the screw cover plate in the screw cylinder of the net cylinder. Rotate the screw rod on the screw hole cylinder to push the pressing plate to squeeze the agricultural product sample on the screw cover plate to crush and extract the juice. Then, the juice of the agricultural product sample passes through the net cylinder and the cloth cylinder to filter out the impurities in the juice. The juice of the agricultural product sample enters the extraction tank. Add an organic solvent from the liquid adding cylinder to displace the pesticide residues in the juice. Then, start the water pump on the drain pipe to drive the detection of the pesticide residue liquid in the displaced juice. Thus, the crushed juice is filtered by the net cylinder and the cloth cylinder, avoiding the problem of small filtration range in single filter screen filtration treatment and ensuring the cleanliness of the later detection liquid. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0016] Figure 1 is the schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is the exploded structure schematic diagram of the present utility model;

[0018] Figure 3 is the structural schematic diagram of the extrusion part in the exploded state in the embodiment of the present utility model;

[0019] Figure 4 is the structural schematic diagram of the screw cover plate in the exploded state in the embodiment of the present utility model;

[0020] Figure 5 is the structural schematic diagram of the extraction part in the exploded state in the embodiment of the present utility model.

[0021] In the figure: 1. Extraction part; 11. Extraction tank; 12. Liquid adding cylinder; 121. Valve; 13. Drain pipe; 131. Water pump; 14. Vibration motor; 15. Bracket; 16. Support spring; 2. Extrusion part; 21. Mesh cylinder; 211. Cloth cylinder; 22. Screw hole cylinder; 23. Screw cylinder; 24. Screw rod; 25. Pressure plate; 26. Screw cover plate; 261. Slide column; 262. Baffle; 263. Lower pressure spring. Specific embodiments

[0022] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0023] Please refer to Figure 1 、Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in Figure 2 , Figure 3 , Figure 4 and Figure 5 , an agricultural product pesticide residue extraction device for pesticide residue detection includes an extraction part 1 and a squeezing part 2. The extraction part 1 includes an extraction tank 11. A hollow cavity is vertically penetrated through the center of the extraction tank 11. A liquid adding cylinder 12 is vertically and communicatively fixed on the top surface of the extraction tank 11. A valve 121 is communicatively assembled on the liquid adding cylinder 12. A drain pipe 13 is vertically and communicatively fixed on the bottom surface of the extraction tank 11. A water pump 131 is communicatively assembled on the drain pipe 13. A bracket 15 is vertically arranged below the extraction tank 11. The squeezing part 2 includes a mesh cylinder 21. The mesh cylinder 21 is vertically penetrated and inserted into the extraction tank 11. A cloth cylinder 211 is fixed on the inner wall of the mesh cylinder 21. A screw cylinder 23 is penetrated and fixed on the top surface of the mesh cylinder 21. A screw cover plate 26 is assembled on the screw cylinder 23. A screw hole cylinder 22 is penetrated and fixed on the bottom surface of the mesh cylinder 21. A screw rod 24 is vertically and threadedly penetrated and installed in the screw hole cylinder 22. The top end of the screw rod 24 is horizontally rotatably connected to a pressing plate 25. The outer walls of the screw cylinder 23 and the screw hole cylinder 22 are respectively fixed to the upper and lower ends of the extraction tank 11. During use, the screw cover plate 26 is disassembled in the screw cylinder 23 of the mesh cylinder 21, then the agricultural product sample is placed in the mesh cylinder 21, and then the screw cover plate 26 is assembled in the screw cylinder 23 of the mesh cylinder 21. The screw rod 24 on the screw hole cylinder 22 is rotated to push the pressing plate 25 to squeeze the agricultural product sample on the screw cover plate 26 to crush and press out the juice. Then the juice of the agricultural product sample passes through the mesh cylinder 21 and the cloth cylinder 211 to filter out the impurities in the juice. The juice of the agricultural product sample enters the extraction tank 11. Organic solvent is added from the liquid adding cylinder 12 to displace the pesticide residues in the juice. Then the water pump 131 on the drain pipe 13 is started to drive the detection of the pesticide residue liquid in the displaced juice. Thus, the crushed juice is filtered by the mesh cylinder 21 and the cloth cylinder 211, avoiding the problem of small filtration range in single filter screen filtration treatment and ensuring the cleanliness of the later detection liquid.

[0024] Please refer to Figure 3 and Figure 4 , the screw cover plate 26 is threadedly assembled and connected to the screw cylinder 23. A sliding column 261 is vertically penetrated and installed on the screw cover plate 26. A baffle 262 is horizontally inserted into the extraction tank 11 on the bottom surface of the sliding column 261. The top surface of the baffle 262 is fixed to the bottom end of the sliding column 261. A downward pressure spring 263 is vertically sleeved outside the sliding column 261. The two ends of the downward pressure spring 263 are respectively fixed to the top end of the sliding column 261 and the screw cover plate 26. During use, the screw cover plate 26 is threadedly assembled in the screw cylinder 23 of the mesh cylinder 21, and then the baffle 262 is supported by the downward pressure spring 263 to push the baffle 262 to ensure the pressing tightness of the downward pressure on the agricultural product sample.

[0025] Please refer to Figure 5, a support spring 16 is vertically fixed on the bottom surface of the extraction tank 11, and the bottom end of the support spring 16 is fixed on the top surface of the bracket 15. A vibration motor 14 is vertically fixed on the outer wall of the extraction tank 11. During use, the vibration motor 14 is started to drive the extraction tank 11 to vibrate on the bracket 15, and the vibration causes the support spring 16 to deform, accelerating the mixing uniformity of the organic solvent and the juice of the agricultural product sample.

[0026] Working principle: During use, the split screw cover plate 26 is placed in the screw cylinder 23 of the mesh cylinder 21, then the agricultural product sample is placed in the mesh cylinder 21, and then the screw cover plate 26 is assembled in the screw cylinder 23 of the mesh cylinder 21. The screw 24 on the screw hole cylinder 22 is rotated to push the pressing plate 25 to squeeze the agricultural product sample to crush and press out the juice on the screw cover plate 26. Then, the juice of the agricultural product sample passes through the mesh cylinder 21 and the cloth cylinder 211 to filter out the impurities in the juice. The juice of the agricultural product sample enters the extraction tank 11, and an organic solvent is added from the liquid adding cylinder 12. After replacing the agricultural residues in the juice, the water pump 131 on the drain pipe 13 is started to drive the detection of the agricultural residue liquid in the replaced juice, so that the crushed juice is filtered by the mesh cylinder 21 and the cloth cylinder 211.

[0027] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for extracting agricultural product pesticide residues for pesticide residue detection, characterized in that: The invention comprises an extraction member (1) and an extrusion member (2), wherein the extraction member (1) comprises an extraction tank (11), wherein a hollow cavity is vertically penetrated at the center of the extraction tank (11), and a liquid adding cylinder (12) is vertically connected and fixed on the top surface of the extraction tank (11), and a liquid discharge pipe (13) is vertically connected and fixed on the bottom surface of the extraction tank (11), and a water pump (131) is connected and assembled on the liquid discharge pipe (13), and a bracket (15) is vertically arranged below the extraction tank (11), and the extrusion member (2) comprises a net cylinder (21), and the net cylinder (21) vertically penetrates The mesh cylinder (21) is inserted into the extraction tank (11), and a cloth cylinder (211) is fixed on the inner wall of the mesh cylinder (21), a screw cylinder (23) is fixed through the top surface of the mesh cylinder (21), and a screw cover plate (26) is assembled on the screw cylinder (23), a screw hole cylinder (22) is fixed through the bottom surface of the mesh cylinder (21), and a screw rod (24) is installed through the vertical thread in the screw hole cylinder (22), and a pressing plate (25) is connected to the top of the screw rod (24) for horizontal rotation, and the outer walls of the screw cylinder (23) and the screw hole cylinder (22) are respectively fixedly connected to the upper and lower ends of the extraction tank (11).

2. The agricultural product pesticide residue extraction device for pesticide residue detection according to claim 1, characterized in that: The screw cover plate (26) is threadedly assembled and connected to the screw barrel (23), and a sliding column (261) is vertically penetrated and installed on the screw cover plate (26).

3. The agricultural product pesticide residue extraction device for pesticide residue detection according to claim 2, characterized in that: A baffle (262) is provided on the bottom surface of the sliding column (261) and is horizontally inserted into the extraction tank (11), and the top surface of the baffle (262) is fixedly connected to the bottom end of the sliding column (261).

4. The agricultural product pesticide residue extraction device for pesticide residue detection according to claim 3, characterized in that: A downward pressure spring (263) is vertically sleeved on the outside of the sliding column (261), and two ends of the downward pressure spring (263) are respectively fixed on the top end of the sliding column (261) and the screw cover plate (26).

5. The agricultural product pesticide residue extraction device for pesticide residue detection according to claim 4, characterized in that: A support spring (16) is vertically fixed on the bottom surface of the extraction tank (11), and the bottom end of the support spring (16) is fixed on the top surface of the bracket (15).

6. The agricultural product pesticide residue extraction device for pesticide residue detection according to claim 5, characterized in that: A vibration motor (14) is vertically fixed on the outer wall of the extraction tank (11).

7. The agricultural product pesticide residue extraction device for pesticide residue detection according to claim 6, characterized in that: The liquid adding cylinder (12) is connected and assembled with a valve (121).

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