Reagent bottle for preparing buffer solution and pesticide residue detection equipment

Abstract

The utility model relates to the technical field of pesticide residue detection, in particular to a reagent bottle for preparing a buffer solution and pesticide residue detection equipment. The reagent bottle for preparing the buffer solution comprises a reagent bottle body, a reagent bottle cap and a filtering assembly arranged in the reagent bottle body, the filter assembly comprises an inner grid, a filter membrane and an outer grid which are sequentially arranged from inside to outside; the inner grating is used for placing a buffering agent; the filter membrane is arranged between the inner grid and the outer grid; and a plurality of filtering windows are correspondingly arranged on the circumferential side walls of the inner grating and the outer grating. By using the reagent bottle disclosed by the utility model, the buffer solution can be made instantly, floccules or impurities such as fruit and vegetable fibers can be filtered, a to-be-detected solution sample which can be conveniently and directly extracted by a liquid adding needle is obtained, the liquid adding needle is effectively prevented from being blocked, and the reliability of pesticide residue detection equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of pesticide residue detection technology, and in particular to a reagent bottle for preparing buffer solutions and a pesticide residue detection device. Background Technology

[0002] Pesticides are widely used for controlling crop diseases and pests due to their high efficiency, speed, economy, and convenience. However, they can also lead to pesticide residues in agricultural products, posing a threat to food safety. Therefore, pesticide residue testing equipment is needed to detect pesticide residues in agricultural products. When detecting organophosphates and carbamate pesticide residues, acetylcholinesterase is often used as a detection tool. Pesticides can inhibit the activity of acetylcholinesterase; by detecting changes in enzyme activity, the presence and concentration of these pesticides in the sample can be indirectly determined. Generally, in the pesticide residue testing process, the inspector first cuts the agricultural product to be tested into small pieces and places them in a reagent bottle, then adds a pre-prepared buffer solution. After soaking and mixing, the sample is obtained, and then the enzyme and substrate are added for pesticide residue detection.

[0003] During their research, the inventors discovered that traditional pesticide residue detection methods require buffer solutions to be prepared in advance by professional technicians. In addition, some soft agricultural products, such as dragon fruit, may contain flocculent matter or fruit and vegetable fibers in the test solution samples. If the test solution samples are directly extracted for testing, it will not only affect the accuracy of the pesticide residue detection results, but may also cause the liquid injection needle to become clogged and interrupt the pesticide residue detection, which is not conducive to the promotion and application of pesticide residue detection equipment. Utility Model Content

[0004] To overcome the problems existing in related technologies, this utility model provides a reagent bottle for preparing buffer solutions and a pesticide residue detection device, which enables the buffer solution to be prepared on the spot and can also filter flocculent matter or impurities such as fruit and vegetable fibers to obtain test liquid samples that can be directly drawn by the dosing needle, effectively avoiding dosing needle blockage and improving the reliability of pesticide residue detection equipment.

[0005] To achieve the above objectives, this utility model provides a reagent bottle for making buffer solutions, comprising: a reagent bottle body, a reagent bottle cap, and a filter assembly disposed within the reagent bottle body; the filter assembly includes an inner grid, a filter membrane, and an outer grid arranged sequentially from the inside to the outside; the inner grid is used to hold the buffer; the filter membrane is disposed between the inner grid and the outer grid; and multiple filter windows are correspondingly disposed on the circumferential sidewalls of the inner grid and the outer grid.

[0006] In an optional embodiment, the inner grid includes a storage compartment and an installation part; the storage compartment is used to place a buffer; the installation part is disposed above the storage compartment and has an inlet; the inlet communicates with the storage compartment; the inner grid is installed in conjunction with the outer grid, the installation part abuts against the inner wall of the outer grid, and a filter compartment is formed between the outer wall of the storage compartment and the inner wall of the outer grid, the filter compartment being used to place the filter membrane.

[0007] In an optional embodiment, the mounting portion is provided with an annular flange, and the annular flange is provided with a limiting portion facing the bottom of the reagent bottle; the top end of the outer grid is provided with a limiting groove recessed towards the bottom of the reagent bottle; the top end of the outer grid abuts against the annular flange to restrict the up-and-down movement of the outer grid; the limiting portion is engaged in the limiting groove to restrict the rotation of the outer grid.

[0008] In an optional embodiment, the filter assembly further includes a sealing plug; the sealing plug is provided with an extraction hole that communicates with the inlet of the mounting part for extracting or injecting liquid samples; the lower part of the sealing plug is fitted onto the mounting part and abuts against the annular flange; the upper part of the sealing plug extends radially from its center in the circumferential direction to form an outer edge, sealing the gap between the reagent bottle cap and the top of the mounting part.

[0009] In an optional embodiment, the sealing plug is made of silicone material.

[0010] In an optional embodiment, the storage compartment of the inner grille is cylindrical, and a plurality of first filter windows are provided on the circumferential sidewall of the storage compartment along its height direction; the outer grille is cylindrical, and a plurality of second filter windows are provided on the circumferential sidewall of the outer grille along its height direction; the second filter windows correspond to the positions of the first filter windows, and the second filter windows and the first filter windows clamp the filter membrane.

[0011] In an optional embodiment, the bottom of the storage compartment of the inner grille is set to be tapered, and / or the bottom of the outer grille is set to be tapered.

[0012] In an optional embodiment, a sealing film is wrapped around the outer wall of the outer grille; the sealing film seals the second filter window.

[0013] In an optional embodiment, the filter assembly is movably disposed within the reagent bottle.

[0014] This utility model also provides a pesticide residue detection device, including the reagent bottle for preparing buffer solution described in the above embodiments.

[0015] The reagent bottle for preparing buffer solutions and the pesticide residue detection device of this invention have the following beneficial effects:

[0016] Compared to traditional buffer solution preparation methods, the technical solution in this embodiment, by setting up a filter component inside the reagent bottle and placing a buffer solution inside the filter component, allows for the immediate preparation of the buffer solution by simply adding water to the reagent bottle before pesticide residue testing. This eliminates the need for professional technicians to pre-prepare the buffer solution, making it extremely convenient and quick. After the test sample is successfully prepared, the filter membrane of the filter component can also immediately filter out fibrous materials and other flocculents, obtaining a pure test sample. The injection needle can then directly draw and transfer the sample to a cuvette for pesticide residue testing, effectively avoiding needle clogging and improving the reliability of pesticide residue testing. The buffer solution inside the filter component can also be replaced as needed, thus enabling the immediate preparation of various buffer solutions. From the perspective of the entire pesticide residue testing process, ordinary personnel can quickly and conveniently prepare readily applicable buffer solutions and test samples, greatly reducing the difficulty of pesticide residue testing, improving the reliability and efficiency of pesticide residue testing, and reducing the cost of pesticide residue testing.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the pesticide residue detection equipment provided in the embodiment of this utility model;

[0019] Figure 2 A perspective view of a reagent bottle for making a buffer solution provided in an embodiment of this utility model;

[0020] Figure 3 A cross-sectional view of a reagent bottle for preparing a buffer solution provided in an embodiment of this utility model;

[0021] Figure 4 An exploded view of a reagent bottle for preparing a buffer solution provided in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the installation of the inner and outer grilles provided in an embodiment of the present utility model.

[0023] Icon labels:

[0024] 1. Reagent bottle; 11. Reagent bottle body; 12. Reagent bottle cap; 13. Inner grid; 131. Storage compartment; 1311. First filter window; 132. Mounting part; 1321. Annular flange; 1322. Limiting part; 1323. Inlet; 14. Outer grid; 141. Grid body; 1411. Second filter window; 1412. Limiting groove; 15. Filter membrane; 16. Sealing plug; 161. Outer edge; 162. Extraction hole; 17. Buffer; 2. Pesticide residue detection device; 3. Liquid injection needle; 4. Box body; 41. Frame; 42. Base. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] This utility model discloses a reagent bottle for preparing buffer solutions and a pesticide residue detection device. The device is suitable for pesticide residue detection in diverse scenarios such as agricultural product quality supervision and inspection, disease prevention and control, environmental protection, industrial and commercial management, and vegetable wholesale markets. It employs automation to realize the steps of sample transfer, buffer solution preparation, sample mixing, enzyme addition, chromogenic agent addition, substrate addition, and quantitative pesticide residue detection. This pesticide residue detection device is suitable for the detection of organophosphates, carbamates, and other pesticide residues.

[0029] like Figure 1As shown, the pesticide residue detection equipment includes: a housing 4, a reagent bottle 1 for preparing buffer solution, a pesticide residue detection device 2, and a dispensing needle 3 for extracting liquid samples, all housed within the housing 4. To improve the portability, ease of use, and environmental adaptability of the pesticide residue detection equipment, the housing 4 includes a top cover, a frame 41, and a base 42, which are installed together from top to bottom to form the housing 4. The reagent bottle 1 is placed on the turntable of the pesticide residue detection device 2. The dispensing needle 3 is mounted above the turntable via a robotic arm and can be moved to the top of the reagent bottle 1 by the robotic arm. The dispensing needle 3 is used to extract liquid samples from the reagent bottle 1 or to inject liquid samples into the reagent bottle 1.

[0030] like Figure 2-4 As shown, the reagent bottle 1 for preparing the buffer solution includes: a reagent bottle body 11, a reagent bottle cap 12, and a filter assembly disposed within the reagent bottle body 11; the filter assembly includes an inner grid 13, a filter membrane 15, and an outer grid 14 arranged sequentially from the inside to the outside; the inner grid 13 is used to hold the buffer 17; the filter membrane 15 is disposed between the inner grid 13 and the outer grid 14; multiple filter windows are correspondingly disposed on the circumferential sidewalls of the inner grid 13 and the outer grid 14. The buffer 17 can be a solid buffer 17.

[0031] Add an appropriate amount of water to reagent bottle 1 to dissolve buffer 17, shake well, and the buffer solution can be prepared immediately. The operation is simple and convenient. When preparing the test sample, cut the agricultural product to be tested into small pieces and place them in the gap between the outer grid 14 and the reagent bottle body 11 of reagent bottle 1. After soaking and shaking, the test sample is formed. At this time, the test sample may contain flocculent matter such as fruit and vegetable fibers. The test sample passes through the filter membrane 15 at the filter window and permeates into the inner grid 13 to form a clear liquid. This clear liquid is a test sample that can be directly used for pesticide residue detection after filtration. The injection needle 3 can directly draw it into a cuvette for pesticide residue detection.

[0032] The technical solution of this embodiment, by setting a filter component inside the reagent bottle and placing a buffer solution inside the filter component, allows for the immediate preparation of a buffer solution by simply injecting water into the reagent bottle before pesticide residue testing. This eliminates the need for professional technicians to pre-prepare the buffer solution, making it extremely convenient and quick. After the test sample is successfully prepared, the filter membrane of the filter component can also immediately filter out fibrous materials and other flocculents, obtaining a pure test sample. The injection needle can then directly draw and transfer the sample to a cuvette for pesticide residue testing, effectively avoiding clogging and improving the reliability of pesticide residue testing. The buffer solution inside the filter component can also be replaced as needed, thus enabling the immediate preparation of various buffer solutions. From the perspective of the entire pesticide residue testing process, ordinary personnel can quickly and conveniently prepare readily applicable buffer solutions and test samples, greatly reducing the difficulty of pesticide residue testing, improving the reliability and efficiency of pesticide residue testing, and reducing the cost of pesticide residue testing.

[0033] In an optional embodiment, combined with Figure 3 , Figure 4 ,as well as Figure 5 The inner grid 13 includes a storage chamber 131 and an installation part 132. The storage chamber 131 is used to place the buffer 17. The installation part 132 is located above the storage chamber 131 and has an inlet 1323. The inlet 1323 communicates with the storage chamber 131. The inner grid 13 is installed in conjunction with the outer grid 14. The installation part 132 and the inner wall of the outer grid 14 abut against each other. A filter chamber is formed between the outer wall of the storage chamber 131 and the inner wall of the outer grid 14. The filter chamber is used to place the filter membrane 15.

[0034] For ease of installation and to achieve a larger filtration area, optional features include... Figure 4 As shown, the storage compartment 131 of the inner grille 13 is cylindrical, and the outer grille 14 is cylindrical. Multiple first filter windows 1311 are provided along the height direction of the circumferential sidewall of the storage compartment 131, and multiple second filter windows 1411 are provided along the height direction of the circumferential sidewall of the outer grille 14. The number of first filter windows 1311 and second filter windows 1411 can be four or other numbers. The second filter windows 1411 correspond in position to the first filter windows 1311 and are of the same size, thereby obtaining a sufficient filtration area. The second filter windows 1411 and the first filter windows 1311 clamp and fix the filter membrane 15, preventing the filter membrane 15 from moving within the filter compartment.

[0035] Optionally, the bottom of the storage compartment 131 of the inner grid 13 is set in a conical shape, and / or the bottom of the outer grid 14 is set in a conical shape. When preparing the test sample, small pieces of the agricultural product to be tested are placed in the gap between the outer grid 14 and the reagent bottle 11. If the agricultural product is crushed and the fruit and vegetable juice is squeezed out, it may affect the accuracy of the test results. Therefore, to prevent the agricultural product from being crushed and to ensure sufficient mixing of the agricultural product and buffer solution to obtain a sufficient amount of test sample, the bottom of the outer grid 14 is designed in a conical shape. That is, the conical bottom of the outer grid 14 can squeeze the agricultural product to be tested to the surrounding area and ensure that the agricultural product is not crushed, while simultaneously allowing the buffer solution level to rise and fully soak the agricultural product. To match the shape of the outer grid 14 and to obtain a sufficient amount of test sample, the bottom of the storage compartment 131 of the inner grid 13 is also designed in a conical shape.

[0036] To ensure stable and secure installation of the inner grille 13 and the outer grille 14, optionally, an annular flange 1321 is provided on the upper part of the mounting part 132, and a limiting part 1322 facing the bottom of the reagent bottle body 11 is provided on the annular flange 1321; a limiting groove 1412 recessed towards the bottom of the reagent bottle body 11 is provided at the top of the outer grille 14; the top of the outer grille 14 abuts against the annular flange 1321 to restrict the up and down movement of the outer grille 14; the limiting part 1322 is engaged in the limiting groove 1412 to restrict the rotation of the outer grille 14, thereby improving installation stability.

[0037] To prevent liquid sample spillage during the testing process, in an optional embodiment, such as Figure 3 , Figure 4 The filter assembly also includes a sealing plug 16; the sealing plug 16 is provided with an extraction hole 162, which communicates with the inlet 1323 of the mounting part 132 for extracting or injecting liquid samples; the lower part of the sealing plug 16 is fitted onto the mounting part 132 and abuts against the annular flange 1321; the upper part of the sealing plug 16 extends radially from its center in the circumferential direction to form an outer edge 161, sealing the gap between the reagent bottle cap 12 and the top of the mounting part 132, thereby effectively preventing the liquid sample in the reagent bottle 1 from overflowing. Optionally, the sealing plug 16 is made of silicone material.

[0038] To facilitate the preservation of the buffer 17 inside the filter assembly, a sealing film is wrapped around the outer wall of the outer grille 14; the sealing film seals the second filter window 1411.

[0039] Based on the above embodiments, the filter assembly is movably disposed within reagent bottle 1. That is, the filter assembly, consisting of buffer 17, inner grid 13, filter membrane 15, and outer grid 14, is a replaceable unit that can be replaced as needed. Buffer 17 can also be replaced according to testing requirements, thereby meeting the needs of preparing different buffer solutions. Alternatively, the filter assembly can be removed from reagent bottle 1, allowing reagent bottle 1 to be used as a regular reagent bottle, offering flexibility and convenience.

[0040] Compared to traditional sample preparation methods for test solutions, the technical solution in this embodiment has the following advantages:

[0041] By incorporating a filter assembly within the reagent bottle and placing a buffer solution inside, a buffer solution can be instantly prepared by simply adding water to the bottle before pesticide residue testing. This eliminates the need for specialized technicians to pre-prepare the buffer solution, making the process extremely convenient and quick. After the test sample is successfully prepared, the filter membrane of the assembly can immediately filter out any fibrous or flocculent material, resulting in a pure test sample. The sample can then be directly transferred to a cuvette for pesticide residue testing using a dispensing needle, effectively preventing needle clogging and improving the reliability of pesticide residue detection. The buffer solution within the filter assembly can also be replaced as needed, enabling the instant preparation of different buffer solutions. From the overall pesticide residue testing process, this allows ordinary personnel to quickly and conveniently prepare readily applicable buffer solutions and test samples, significantly reducing the difficulty of pesticide residue testing, improving its reliability and efficiency, and lowering testing costs.

[0042] Another embodiment of this utility model discloses a pesticide residue detection device, including a reagent bottle for preparing a buffer solution as described in the above embodiment. For content not disclosed in this embodiment, please refer to the content described in the above embodiments.

[0043] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A reagent bottle for preparing buffer solutions, characterized in that, include: The reagent bottle body, the reagent bottle cap, and the filter assembly installed inside the reagent bottle body; The filtration assembly includes an inner grid, a filter membrane, and an outer grid arranged sequentially from the inside out. The inner grid is used to place the buffer; the filter membrane is disposed between the inner grid and the outer grid; and multiple filter windows are correspondingly provided on the circumferential sidewalls of the inner grid and the outer grid.

2. The reagent bottle for preparing buffer solution according to claim 1, characterized in that, The inner grille includes a storage compartment and a mounting section; The storage compartment is used to hold the buffer; The mounting part is located above the storage compartment and has a feed inlet; the feed inlet is connected to the storage compartment. The inner grille is installed in conjunction with the outer grille, the mounting part abuts against the inner wall of the outer grille, and a filter chamber is formed between the outer wall of the storage compartment and the inner wall of the outer grille, the filter chamber being used to place the filter membrane.

3. The reagent bottle for preparing buffer solution according to claim 2, characterized in that, The mounting part is provided with an annular flange, and the annular flange is provided with a limiting part facing the bottom of the reagent bottle; The top of the outer grille is provided with a limiting groove recessed towards the bottom of the reagent bottle; The top of the outer grille abuts against the annular flange to restrict the up-and-down movement of the outer grille; the limiting part is engaged in the limiting groove to restrict the rotation of the outer grille.

4. The reagent bottle for preparing buffer solution according to claim 3, characterized in that, The filter assembly also includes a sealing plug; The sealing plug is provided with an extraction hole, which is connected to the inlet of the mounting part for extracting or injecting liquid samples; The lower part of the sealing plug is fitted onto the mounting part and abuts against the annular flange; the upper part of the sealing plug extends radially from its center in the circumferential direction to form an outer edge, sealing the gap between the reagent bottle cap and the top of the mounting part.

5. The reagent bottle for preparing buffer solution according to claim 4, characterized in that, The sealing plug is made of silicone material.

6. The reagent bottle for preparing a buffer solution according to claim 2, characterized in that, The storage compartment of the inner grid is cylindrical, and the circumferential sidewall of the storage compartment is provided with a plurality of first filter windows along its height direction. The outer grille is cylindrical, and a plurality of second filter windows are provided on the circumferential sidewalls of the outer grille along its height direction; The second filter window is positioned corresponding to the first filter window, and the second filter window and the first filter window clamp the filter membrane.

7. The reagent bottle for preparing buffer solution according to claim 2, characterized in that, The bottom of the storage compartment of the inner grille is set in a conical shape, and / or the bottom of the outer grille is set in a conical shape.

8. The reagent bottle for preparing buffer solution according to claim 1, characterized in that, The outer wall of the outer grille is wrapped with a sealing film to seal the filter window on the outer grille.

9. The reagent bottle for preparing a buffer solution according to claim 1, characterized in that, The filter assembly is movably disposed within the reagent bottle.

10. A pesticide residue detection device, characterized in that, Includes reagent bottles for preparing buffer solutions as described in any one of claims 1 to 9.

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