Pesticide residue colloidal gold detection card

Abstract

The utility model discloses a pesticide residue colloidal gold detection card which comprises a shell, and a long groove is formed in the outer side of the shell in a penetrating manner; a box body is fixedly connected in the shell, test paper is arranged in the box body, and a round hole is formed in one end of the box body; the drawing assembly is arranged in the shell, and a drawing pipe is arranged in the drawing assembly and used for drawing pesticide residues; the suction assembly comprises a suction assembly; the sliding rail is fixedly connected to the inner bottom surface of the shell; the movable plate is arranged in the shell, a sliding strip is fixedly connected to the bottom of the movable plate, and the sliding strip is in sliding connection with the sliding rail; and the pipe body is fixedly connected to the movable plate. According to the utility model, through the arrangement of the drawing assembly, pesticide residues do not need to be drawn by a dropper and then dropped on test paper, the step of using the dropper is reduced, and the device is directly used for drawing, so that convenience and rapidness are realized, and outdoor detection is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural product detection, in particular to a colloidal gold detection card for pesticide residues. Background Art

[0002] Colloidal gold detection of pesticide residues is a technology that uses colloidal gold nanoparticles to react specifically with pesticide residues in agricultural products. By detecting changes in the optical properties of the reaction products on the colloidal gold nanoparticle surface, this technology enables rapid and sensitive detection of pesticide residues in agricultural products. This technology is widely used in a variety of fields, including agricultural product quality and safety supervision, food processing, market testing, scientific research, and teaching, offering advantages such as rapid detection, ease of operation, and high sensitivity.

[0003] Existing colloidal gold detection methods for pesticide residues involve using a dropper as a liquid extraction device to measure a sample from the liquid to be tested, then carefully dripping the sample onto a specific colloidal gold test paper. This process requires multiple steps to prepare for the test, including accurate liquid measurement, stability control during the dripping process, and ensuring sufficient contact between the liquid and the test paper. Overall, it is relatively cumbersome and requires a certain level of operational precision. To address this, we have proposed a colloidal gold test card for pesticide residues. Utility Model Content

[0004] The purpose of the utility model is to provide a colloidal gold detection card for pesticide residues to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] Pesticide residue colloidal gold test cards, including:

[0007] A shell, wherein a long slot is formed on the outer side of the shell;

[0008] A box body is fixedly connected to the shell, a test paper is arranged in the box body, and a circular hole is opened at one end of the box body;

[0009] The extraction component is arranged in the shell, and a extraction tube is provided in the extraction component for extracting pesticide residues.

[0010] Preferably, the extraction component includes:

[0011] A slide rail, the slide rail being fixedly connected to the inner bottom surface of the shell;

[0012] A movable plate is disposed in the housing, wherein a slide bar is fixedly connected to the bottom of the movable plate, and the slide bar is slidably connected to the slide rail;

[0013] a tube body, the tube body being fixedly connected to the movable plate;

[0014] A dip tube is placed in the tube body, and one end of the dip tube extends into the box body through the circular hole;

[0015] A push block is arranged outside the shell, and a connecting block is fixedly connected to the inner side of the push block. The connecting block extends into the long slot and is fixedly connected to the movable plate.

[0016] Preferably, the number of the slide rails and the slide bars is set to two, the number of the push blocks, the connecting blocks and the long slots is set to two groups, and the two groups are respectively arranged on both sides of the shell.

[0017] Preferably, the number of the dip tubes is multiple, the outer sleeves of the multiple dip tubes are provided with multiple fixing rings, the multiple dip tubes are all made of ultra-fine fiber material, and the overall diameter of the multiple dip tubes is smaller than the diameter of the circular hole.

[0018] Preferably, one end of the shell is open, and the first cover is sleeved on one end of the shell.

[0019] Preferably, the top surface of the shell is opened, the top surface of the shell is rotatably hinged with a second cover, and the second cover is fixedly connected to an organic glass plate.

[0020] Preferably, the position of the organic glass plate is aligned with the test paper, and the test paper can be disassembled in the box body.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] By setting up the extraction component, the first cover is pulled off, and then the push blocks on both sides are pushed to slide the movable plate out through the slide rails and the slide bar, which drives the tube body and multiple extraction tubes to slide out of the shell. At this time, the multiple extraction tubes can be inserted into the pesticide residue for extraction. Since the extraction tubes are made of ultrafine fiber material, the fiber diameter is extremely fine and the specific surface area is large, so they can quickly absorb and diffuse the liquid. Then the multiple extraction tubes are pushed back to their original position, and the ends of the multiple extraction tubes are extended into the box body through the circular holes. The multiple extraction tubes can extract the pesticide residue into the box body. Since the ends of the multiple extraction tubes are arranged on the test paper and contact each other, the extracted pesticide residues will penetrate into the test paper and then be detected through the reaction of the test paper. In summary, there is no need to use a dropper to extract the pesticide residue and then drop it onto the test paper, which reduces the step of using the dropper. The device can be directly used for extraction, which is convenient and fast and conducive to outdoor detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the extraction component in the utility model;

[0026] Figure 4 This utility model Figure 1 side view.

[0027] In the figure: 1. Shell; 11. Long groove; 2. Box body; 21. Test paper; 22. Round hole; 3. Extraction assembly; 31. Slide rail; 32. Moving plate; 321. Slide bar; 33. Tube body; 34. Extraction tube; 341. Fixed ring; 35. Push block; 351. Connecting block; 4. First cover; 5. Second cover; 51. Organic glass plate. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figure 1-4 As shown, in this embodiment, the colloidal gold detection card for pesticide residues includes: a shell 1, a long groove 11 is opened through the outer side of the shell 1, and the length of the long groove 11 is sufficient to drive the suction tube 34 to extend out of the shell 1 and into the box body 2; a box body 2 is fixedly connected to the shell 1, and a test paper 21 is set in the box body 2, and the test paper 21 is replaceable. A circular hole 22 is opened at one end of the box body 2; an extraction component 3, the extraction component 3 is arranged in the shell 1, and multiple suction tubes 34 can extract pesticide residues into the box body 2, and then penetrate into the test paper 21 for detection.

[0030] The extraction assembly 3 includes: a slide rail 31, a movable plate 32, a tube body 33, a extraction tube 34 and a push block 35. The slide rail 31 is fixedly connected to the inner bottom surface of the shell 1; the movable plate 32 is arranged in the shell 1, and the bottom of the movable plate 32 is fixedly connected to a slide bar 321, and the slide bar 321 is slidably connected to the slide rail 31; the tube body 33 is fixedly connected to the movable plate 32; the extraction tube 34 is placed in the tube body 33, and one end of the extraction tube 34 extends into the box body 2 through the circular hole 22; the push block 35 is arranged outside the shell 1, and the inner side of the push block 35 is fixedly connected to the connecting block 351, which extends into the long groove 11 and is fixedly connected to the movable plate 32; the extracted pesticide residues will penetrate into the test paper 21 and then be detected through the reaction of the test paper 21.

[0031] like Figure 2-3As shown, in this embodiment, a plurality of dip tubes 34 are provided, and a plurality of fixing rings 341 are provided on the outer shells of the plurality of dip tubes 34. The plurality of dip tubes 34 are made of microfiber material. The overall diameter of the plurality of dip tubes 34 is smaller than the diameter of the circular hole 22. The fixing rings 341 are provided to fix the plurality of dip tubes 34 into a whole. The fixing rings 341 are elastic and can adapt to the expansion of the plurality of dip tubes 34.

[0032] Furthermore, the material of the dip tube 34 is a microfiber material. With its extremely fine fiber diameter and large specific surface area, it performs well in absorbing and releasing liquids. As the fiber becomes finer, the specific surface area increases significantly, forming more and smaller capillary pores. These pores greatly improve the material's hygroscopicity and capillary wicking ability, enabling it to quickly absorb liquids. The microfiber material is highly efficient in both absorbing and releasing liquids. Because the multiple dip tubes 34 are short and constrained by the fixing ring 341 and the tube body 33, after sufficient pesticide residue is absorbed, the agricultural residue will flow out of the ends of the multiple dip tubes 34 for detection. This process takes a short time. In addition, the microfiber material does not react with the pesticide residue.

[0033] like Figure 2 As shown, further, one end of the shell 1 is opened, and one end of the shell 1 is sleeved with a first cover body 4; the top surface of the shell 1 is opened, and the top surface of the shell 1 is rotatably hinged with a second cover body 5, and the second cover body 5 is fixedly connected with an organic glass plate 51; the position of the organic glass plate 51 is aligned with the test paper 21, and the test paper 21 can be disassembled in the box body 2. After the first cover body 4 and the second cover body 5 are closed, external dust and other debris can be prevented from entering. By setting the organic glass plate 51, the reaction of the test paper 21 can be observed. The organic glass plate 51 is sturdy and durable, and is convenient for outdoor detection.

[0034] Specifically, multiple dip tubes 34 are inserted into the pesticide residue for extraction. The dip tubes 34 are constructed of ultra-fine fiber material, and the fibers have a tiny diameter, which significantly increases the specific surface area, ensuring efficient liquid absorption and rapid diffusion capabilities. During operation, the multiple dip tubes 34 are pushed out and then pushed back, and their ends pass through the circular hole 22 into the interior of the box body 2. Then, these dip tubes 34 quickly guide the pesticide residues in the environment into the box body 2. Since the ends of the dip tubes 34 are arranged on the surface of the test paper 21 and the dip tubes 34 expand when absorbing liquid, they will form direct contact with the surface of the test paper 21. The absorbed pesticide residues then penetrate into the interior of the test paper 21. The test paper 21 serves as a detection medium and identifies and reacts to the penetrated pesticide residues through its built-in colloidal gold detection mechanism, thereby achieving effective detection and analysis of pesticide residues. In summary, there is no need to use a dropper to extract pesticide residues and then drop them onto the test paper 21, reducing the step of using a dropper. The device can be directly used for extraction, which is convenient and fast and conducive to outdoor detection.

[0035] Working principle: First, pull off the first cover 4, then push the push blocks 35 on both sides to slide the movable plate 32 out through the slide rail 31 and the slide bar 321, which drives the tube body 33 and multiple dip tubes 34 to slide out from the shell 1. At this time, the multiple dip tubes 34 can be inserted into the pesticide residue for extraction. Since the dip tubes 34 are made of ultra-fine fiber material, the fiber diameter is extremely fine and the specific surface area is large, so they can quickly absorb and diffuse the liquid. Then push the multiple dip tubes 34 back to their original position, and the ends of the multiple dip tubes 34 extend into the box body 2 through the circular hole 22. The multiple dip tubes 34 can extract the pesticide residue into the box body 2. Since the ends of the multiple dip tubes 34 are set on the test paper 21 and contact each other, the extracted pesticide residues will penetrate into the test paper 21 and then be detected through the reaction of the test paper 21.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Pesticide residue colloidal gold detection card, characterized by: include: A housing (1), wherein a long slot (11) is formed on the outer side of the housing (1); A box body (2) is fixedly connected to the housing (1), a test paper (21) is arranged in the box body (2), and a circular hole (22) is opened at one end of the box body (2); A suction component (3) is provided in the housing (1), and a suction tube (34) is provided in the suction component (3) for sucking up pesticide residues.

2. The colloidal gold detection card for pesticide residues according to claim 1, characterized in that: The extraction component (3) comprises: A slide rail (31), wherein the slide rail (31) is fixedly connected to the inner bottom surface of the housing (1); A movable plate (32), the movable plate (32) being arranged in the housing (1), a sliding bar (321) being fixedly connected to the bottom of the movable plate (32), and the sliding bar (321) being slidably connected to the slide rail (31); a tube body (33), wherein the tube body (33) is fixedly connected to the movable plate (32); A dip tube (34), the dip tube (34) is placed in the tube body (33), and one end of the dip tube (34) extends into the box body (2) through the circular hole (22); A push block (35) is provided outside the housing (1); a connecting block (351) is fixedly connected to the inner side of the push block (35); the connecting block (351) extends into the long slot (11) and is fixedly connected to the movable plate (32).

3. The colloidal gold detection card for pesticide residues according to claim 2, characterized in that: The number of the slide rails (31) and the slide bar (321) is set to two, and the number of the push blocks (35), the connecting blocks (351) and the long slots (11) is set to two groups, and the two groups are respectively arranged on both sides of the housing (1).

4. The colloidal gold detection card for pesticide residues according to claim 2, characterized in that: The number of the suction tubes (34) is set to be multiple, and the outer shells of the multiple suction tubes (34) are provided with multiple fixing rings (341). The multiple suction tubes (34) are all made of ultra-fine fiber material, and the overall diameter of the multiple suction tubes (34) is smaller than the diameter of the circular hole (22).

5. The colloidal gold detection card for pesticide residues according to claim 1, characterized in that: One end of the shell (1) is open, and one end of the shell (1) is sleeved with a first cover (4).

6. The colloidal gold detection card for pesticide residues according to claim 1, characterized in that: The top surface of the shell (1) is provided with an opening, and a second cover body (5) is rotatably hinged to the top surface of the shell (1), and an organic glass plate (51) is fixedly connected inside the second cover body (5).

7. The colloidal gold detection card for pesticide residues according to claim 6, characterized in that: The position of the organic glass plate (51) is aligned with the test paper (21), and the test paper (21) can be disassembled in the box body (2).

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