A device for detecting pesticide residues in agricultural products

Abstract

The utility model belongs to the agricultural product pesticide residue detection technical field discloses a device for detecting agricultural product pesticide residue, including base frame, the base of base frame is opened and has colorimetric card placing groove and optical magnifying glass placing groove, broken jar, broken jar includes broken jar body and the jar cover of sleeve joint installation in the top of broken jar body, the broken structure is integrated on the jar cover, conveying chamber, conveying chamber is installed in the bottom of broken jar body, and the bottom of conveying chamber is threadedly matched and is connected with filter cover, filtrate container, filtrate container can be detachably installed on the base of base frame, and filtrate container is located the just below of conveying chamber, and the base of base frame is opened and has the clamping groove corresponding with filtrate container, and the clamping groove is adapted to filtrate container. The utility model breaks through the space limit of traditional laboratory equipment by integrating the compact base frame of broken, filter, colorimetric analysis function, supports the field fast screening of field, exempts power dependence simultaneously manual operation design, reduces use cost significantly.

Description

Technical Field

[0001] This utility model relates to the field of pesticide residue detection technology for agricultural products, and in particular to a device for detecting pesticide residues in agricultural products. Background Technology

[0002] Devices for detecting pesticide residues in agricultural products refer to specialized instruments or equipment that use chemical, biological, or physical methods to quantitatively or qualitatively analyze the amount of pesticide residues in agricultural products. These devices are mainly used to ensure that agricultural products meet food safety standards and prevent pesticide residues from exceeding the limits and causing harm to human health.

[0003] Currently, pesticide residue detection mainly relies on laboratory methods such as chromatography, which suffer from problems such as expensive equipment, complex operation, and long time consumption. Existing portable detection devices mostly use electronic sensors, which are susceptible to environmental interference and have a limited lifespan. Therefore, we propose a device for detecting pesticide residues in agricultural products. Utility Model Content

[0004] In view of the problems of existing pesticide residue detection devices for agricultural products being expensive, complicated to operate, time-consuming, susceptible to environmental interference, and having a limited lifespan, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A device for detecting pesticide residues in agricultural products includes a base frame, on the base of which a colorimetric card placement slot and an optical magnifying glass placement slot are provided;

[0007] A crushing tank, comprising a crushing tank body mounted on the base frame and a tank cover sleeved and mounted on the top of the crushing tank body, wherein the tank cover integrates a crushing structure;

[0008] The conveying chamber is installed at the bottom of the crushing tank, and a filter cover for solid-liquid separation is threadedly connected to the bottom of the conveying chamber.

[0009] A filtrate container is detachably mounted on the base of the frame, and the filtrate container is located directly below the conveying chamber.

[0010] As a technical solution of the device for detecting pesticide residues in agricultural products according to the present invention, wherein: a snap-fit ​​groove corresponding to the filtrate container is provided on the base of the base frame, and the snap-fit ​​groove is adapted to the filtrate container.

[0011] As a technical solution of the device for detecting pesticide residues in agricultural products according to the present invention, the inner wall of the snap-fit ​​groove is provided with positioning grooves arranged in a circumferential array, the outer surface of the filtrate container has integrally formed positioning protrusions that correspond to the positioning grooves respectively, and the positioning protrusions are adapted to the positioning grooves. The filtrate container is detachably installed on the base of the base frame through the positioning protrusions, the positioning grooves and the snap-fit ​​groove.

[0012] As a technical solution of the device for detecting pesticide residues in agricultural products according to the present utility model, wherein: the bottom of the crushing tank penetrates the interior of the base frame and is connected to a discharge pipe, the conveying chamber is installed at the end of the discharge pipe away from the crushing tank and the two are connected, and a valve is installed on the discharge pipe.

[0013] As a technical solution of the device for detecting pesticide residues in agricultural products according to the present utility model, the crushing structure includes a drive rod that is vertically and rotatably mounted on the can lid, a manual crank is installed at one end of the drive rod that extends out of the can lid, and a set of crushing blades that are equidistantly arranged along the axial direction of the drive rod is installed at the other end of the drive rod away from the manual crank.

[0014] As a technical solution of the device for detecting pesticide residues in agricultural products according to the present invention, the conveying cavity is a columnar cavity made of transparent material, and the inner wall of the conveying cavity is provided with spiral guide vanes.

[0015] As a technical solution of the device for detecting pesticide residues in agricultural products according to the present invention, the bottom of the filter cover is provided with filter holes arranged in a circumferential array.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] 1. This utility model integrates crushing, filtering, and colorimetric analysis functions into a compact base frame, breaking through the space limitations of traditional laboratory equipment, supporting rapid screening in the field, and the manual operation design eliminates the need for electricity, significantly reducing the cost of use.

[0018] 2. This utility model simplifies the cleaning process by adopting a modular and detachable structure, avoiding sample residue contamination. The spiral guide plate and optimized filter hole design improve the liquid-solid separation efficiency and shorten the detection time. At the same time, the positioning structure of the snap-fit ​​groove, positioning groove and positioning protrusion ensures the stability of operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0022] Figure 3 This is a cross-sectional view of the present invention, showing the removal of the can lid and the filtrate container.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the diagram: 1. Base frame; 101. Colorimetric card placement slot; 102. Optical magnifying glass placement slot; 103. Snap-fit ​​slot; 104. Positioning groove; 2. Crushing tank body; 201. Discharge pipe; 202. Valve; 3. Tank cover; 301. Drive rod; 302. Manual crank handle; 303. Crushing blade assembly; 4. Conveying chamber; 401. Spiral guide vane; 402. Filter cover; 5. Filtrate container; 501. Positioning protrusion. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1-3 This invention provides a device for detecting pesticide residues in agricultural products. The device includes a base frame 1, on which a colorimetric card placement slot 101 and an optical magnifying glass placement slot 102 are provided. In application, the dedicated slots (colorimetric card placement slot 101 and optical magnifying glass placement slot 102) on the base frame 1 enable centralized storage of detection consumables (colorimetric cards with gradient chromatographic bands corresponding to common pesticides) and auxiliary tools (optical magnifying glass), avoiding loss and improving operational convenience.

[0027] The crushing tank includes a crushing tank body 2 mounted on a base frame 1 and a tank cover 3 sleeved and mounted on the top of the crushing tank body 2. The tank cover 3 has an integrated crushing structure.

[0028] The conveying chamber 4 is installed at the bottom of the crushing tank 2, and the bottom of the conveying chamber 4 is threadedly connected to a filter cover 402 for solid-liquid separation.

[0029] The filtrate container 5 is detachably installed on the base of the base frame 1 and is located directly below the delivery chamber 4. In application, the crushing tank, delivery chamber 4 and filtrate container 5 are detachably connected (such as threaded connection) to facilitate cleaning and maintenance and reduce the risk of cross-contamination. At the same time, the threaded connection design between the filter cover 402 and the delivery chamber 4 simplifies the separation process and improves sample processing efficiency.

[0030] Reference Figure 2 and Figure 3 The base of the base frame 1 is provided with a snap-fit ​​groove 103 corresponding to the filtrate container 5, and the snap-fit ​​groove 103 is adapted to the filtrate container 5. The inner wall of the snap-fit ​​groove 103 is provided with positioning grooves 104 arranged in a circumferential array. The outer surface of the filtrate container 5 has an integrally formed positioning protrusion 501 that corresponds to the positioning groove 104, and the positioning protrusion 501 is adapted to the positioning groove 104. The filtrate container 5 can be detachably installed on the base of the base frame 1 through the positioning protrusion 501, the positioning groove 104 and the snap-fit ​​groove 103. In application, the cooperative design of the snap-fit ​​groove 103, the positioning protrusion 501 and the positioning groove 104 ensures that the filtrate container 5 is placed stably during the testing process, prevents liquid spillage, and improves operational safety.

[0031] Reference Figure 2 and Figure 3 The bottom of the crushing tank 2 is connected to the base frame 1 and a discharge pipe 201 is installed. The conveying chamber 4 is installed at the end of the discharge pipe 201 away from the crushing tank 2 and the two are connected. A valve 202 (PP ball valve) is installed on the discharge pipe 201. In application, the valve 202 controls the opening and closing of the discharge pipe 201 to realize the on-demand conveying of the crushed sample, avoid waste and reduce errors.

[0032] Reference Figure 1 and Figure 2 The crushing structure includes a drive rod 301 that is vertically and rotatably mounted on the can lid 3. A manual crank 302 is installed at one end of the drive rod 301 that extends out of the can lid 3. A set of crushing blades 303 that are equidistantly arranged along the axial direction of the drive rod 301 is installed at the other end of the drive rod 301 away from the manual crank 302. In application, the manual crank 302 drives the set of crushing blades 303 to crush through the drive rod 301. It does not rely on electricity and is suitable for environments without power supply, such as fields, reducing equipment costs and the threshold for use. At the same time, the equidistantly arranged set of crushing blades 303 supports multi-stage crushing and adapts to the texture differences of different agricultural products (such as leafy vegetables and fruits).

[0033] Reference Figure 2 and Figure 3The conveying chamber 4 is a cylindrical cavity made of transparent material, and the inner wall of the conveying chamber 4 is provided with a spiral guide plate 401. The bottom of the filter cover 402 is provided with filter holes arranged in a circular array. In application, the transparent conveying chamber 4 combined with the spiral guide plate 401 makes it easy to observe the liquid flow state and ensure uniform mixing. At the same time, the design of the circular array of filter holes increases the contact area of ​​the filtrate, accelerates the separation speed, and reduces the risk of clogging.

[0034] The working principle of this utility model is as follows: Sample pretreatment: Take an appropriate amount of agricultural product sample (such as spinach leaves) and put it into the crushing tank 2, add an appropriate amount of buffer solution, then close the tank lid 3 tightly, and turn the manual crank 302 clockwise. At this time, the manual crank 302 drives the drive rod 301 to rotate, and the drive rod 301 drives the crushing blade group 303 to rotate and crush the agricultural product sample until the sample is completely crushed.

[0035] Solid-liquid separation: Open valve 202 on discharge pipe 201, the crushing liquid flows into conveying chamber 4, and then the filtrate intercepts solid residue through filter cover 402, and the filtrate drips into the filtrate container 5 below;

[0036] Detection and analysis: Take out the filtrate container 5, use a dropper to take an appropriate amount of filtrate into the reaction area of ​​the colorimetric card, let it stand for a period of time, take out the optical magnifying glass from the optical magnifying glass placement slot 102, and compare the colorimetric card results (if blue appears, it is negative; if colorless, it is positive).

[0037] Cleaning and maintenance: Unscrew the filter cover 402 counterclockwise, use an external soft brush to remove the residue from the filter holes, press the positioning protrusion 501 on the filtrate container 5 and remove it upwards, then rinse each module with clean water and let it dry.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for detecting pesticide residues in agricultural products, characterized in that: include: The base frame (1) has a colorimeter card placement slot (101) and an optical magnifying glass placement slot (102) on its base. The crushing tank includes a crushing tank body (2) mounted on the base frame (1) and a tank cover (3) sleeved on the top of the crushing tank body (2), wherein the tank cover (3) is integrated with a crushing structure; The conveying chamber (4) is installed at the bottom of the crushing tank (2), and the bottom of the conveying chamber (4) is threadedly connected to a filter cover (402) for solid-liquid separation. The filtrate container (5) is detachably installed on the base of the base frame (1) and is located directly below the delivery chamber (4).

2. The device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The base of the frame (1) is provided with a snap-fit ​​groove (103) corresponding to the filtrate container (5), and the snap-fit ​​groove (103) is adapted to the filtrate container (5).

3. The device for detecting pesticide residues in agricultural products according to claim 2, characterized in that: The inner wall of the snap-fit ​​groove (103) is provided with positioning grooves (104) arranged in a circumferential array. The outer surface of the filtrate container (5) has a positioning protrusion (501) integrally formed and corresponding to the positioning groove (104). The positioning protrusion (501) is adapted to the positioning groove (104). The filtrate container (5) can be detachably installed on the base of the base frame (1) through the positioning protrusion (501), the positioning groove (104) and the snap-fit ​​groove (103).

4. The device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The bottom of the crushing tank (2) penetrates the interior of the base frame (1) and is connected to a discharge pipe (201). The conveying chamber (4) is installed at the end of the discharge pipe (201) away from the crushing tank (2) and the two are connected. A valve (202) is installed on the discharge pipe (201).

5. The device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The crushing structure includes a drive rod (301) that is vertically and rotatably mounted on the can cover (3). A manual crank (302) is mounted on one end of the drive rod (301) that extends out of the can cover (3). A set of crushing blades (303) that are equidistant from the manual crank (302) is mounted on the other end of the drive rod (301) along the axial direction of the drive rod (301).

6. The device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The conveying cavity (4) is a columnar cavity made of transparent material, and the inner wall of the conveying cavity (4) is provided with a spiral guide plate (401).

7. The device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The bottom of the filter cover (402) has filter holes arranged in a circular array.

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