Portable pipette tip placing device for pesticide residue detection of agricultural products

Abstract

The utility model discloses an agricultural product pesticide residue detection portable pipette tip placing device which comprises a collecting tank, supporting rods are arranged at the left end and the right end of the collecting tank, a supporting plate is arranged between the supporting rods, fixing openings are formed in the front end and the rear end of the supporting plate, and limiting grooves are formed in the left end and the right end of each fixing opening. A fixing clamping block is slidably connected into the limiting groove, a spring is arranged between the fixing clamping block and the limiting groove, an arc-shaped rubber clamping block is arranged at one end of the fixing clamping block, a first rubber sheet is arranged on the arc-shaped rubber clamping block, a second rubber sheet is arranged at one end of the arc-shaped rubber clamping block, and a fixing groove is formed in the upper end of the supporting plate. Elastic pieces are arranged in the fixing grooves, and suction cups are arranged at the lower ends of the collecting grooves. According to the pipette tip placing device, the pipette tips can be conveniently and orderly placed, and the pipette tips can be prevented from being polluted due to the fact that the pipette tips are manually replaced by workers.

Description

Technical Field

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

[0002] Pesticide residue testing in agricultural products is a crucial step in ensuring food safety and agricultural product quality. By detecting pesticide residues in agricultural products, products exceeding the standards can be identified and addressed promptly, ensuring the safety and harmlessness of agricultural products for consumers, improving the quality and market competitiveness of agricultural products, ensuring compliance with international trade requirements, and promoting agricultural exports. In pesticide residue testing, pipettes are typically used to extract and transfer liquids. Current pipettes usually require changing different pipette tips when extracting different liquids to prevent cross-contamination. However, after changing pipette tips, staff often simply place them haphazardly on the lab table. Since the same volume of the same liquid can be reused with the same pipette tip, haphazardly placing pipette tips on the lab table easily leads to confusion and contamination. Furthermore, since pipette tips are usually changed manually, staff with hands contaminated with other liquids can easily cause contamination between liquids. Therefore, there is an urgent need for a pipette tip placement device that can solve these problems. Utility Model Content

[0003] The purpose of this invention is to provide a portable pipette tip placement device for detecting pesticide residues in agricultural products, which can conveniently and orderly place pipette tips and prevent manual replacement of pipette tips by staff, thus avoiding contamination of the pipette tips.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A portable pipette tip placement device for detecting pesticide residues in agricultural products includes a collection tank. The collection tank has detachable support rods vertically arranged at both ends. A detachable support plate is horizontally arranged between the upper ends of the two support rods. The support plate has several equally spaced fixing openings at both ends. Each fixing opening has a limiting groove at both ends. A fixing block is slidably connected inside each limiting groove. Multiple springs are equally spaced between each fixing block and its corresponding limiting groove.

[0006] Each fixed clamping block has an arc-shaped rubber clamping block at the end away from the corresponding spring. On the upper side of the end of each arc-shaped rubber clamping block away from the corresponding fixed clamping block, there are several first rubber pieces that are cut obliquely from top to bottom at equal intervals. On the lower side of the end of each arc-shaped rubber clamping block away from the corresponding fixed clamping block, there are several second rubber pieces that are cut obliquely from bottom to top at equal intervals. The upper end of the support plate has a fixing groove near each fixing port. The front and rear ends of the fixing groove are provided with spring pieces. The lower end of the collection groove is provided with multiple suction cups at equal intervals.

[0007] By adopting the above technical solution, in use, the collection tank is first fixed with a suction cup, then the support plate is fixed above the collection tank with a support rod. Next, the labels of the liquids to be tested are inserted sequentially into the fixing slots on the support plate to prevent confusion in the use of pipette tips. The pipette tip is inserted between two rubber arc-shaped clamps in the same fixing port. When the pipette tip needs to be used, the pipette is first inserted into the corresponding pipette tip. The pipette pushes the pipette tip downwards, causing the pipette tip to cause the second rubber plate to fold downwards. Friction is generated between the second rubber plate and the pipette tip, thus creating resistance to prevent the pipette tip from moving downwards, allowing the pipette to be inserted into the pipette tip. Then, the pipette is pulled out of the fixing port by the pipette to pipette the liquid. The pipette tip pushes the fixed clamping block to slide relative to the limiting groove, compressing the spring and pulling the pipette tip out from between the two fixed clamping blocks. When the pipette tip needs to be replaced, the pipette tip is pushed into the corresponding fixing port through the pipette. The pipette tip pushes the corresponding fixed clamping block to interact with the limiting groove, compressing the spring and locking the pipette tip between the two arc-shaped rubber clamping blocks. It is clamped by the spring force. Then, the pipette is pulled out of the pipette tip. The pipette tip will cause the first rubber plate to fold upward. The friction between the first rubber plate and the pipette tip will generate resistance to prevent the pipette tip from moving upward. The pipette tip can then be pulled out and used to replace different pipette tips. The liquid remaining in the pipette tip falls into the collection tank for unified collection and treatment.

[0008] A further feature of this invention is that: a fixing sleeve is provided at both the left and right ends of the collection groove, each support rod is slidably connected to the corresponding fixing sleeve, and a first fixing bolt is threaded to the end of each fixing sleeve away from the collection groove.

[0009] A further feature of this invention is that the support plate has threaded openings at both its left and right ends, and the upper end of each support rod is rotatably connected to a second fixing bolt that is threaded to the corresponding threaded opening.

[0010] A further feature of this invention is that each fixing block is provided with an inclined surface that is inclined from the outside to the inside.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] Firstly, it allows for easy and orderly placement of pipette tips. The spring in the limiting groove can easily clamp and fix the label with the type of liquid. By pushing the spring to compress the fixing block, elastic force can be generated to allow the arc-shaped rubber clamp to hold the pipette tip, thus placing the required pipette tip with the corresponding label one by one to prevent confusion.

[0013] Secondly, it can prevent pipette tip contamination when staff manually install or replace pipette tips. When the pipette is inserted into the pipette fixed by the support plate, the downward movement of the pipette pushes the pipette tip downward. The downward movement of the pipette tip causes the second rubber sheet to fold, thereby generating friction to prevent the pipette tip from moving downward, allowing the pipette to be inserted into the pipette tip. When replacing the pipette tip, by fixing the pipette tip between the curved rubber clips, the pipette moves upward. The upward movement of the pipette pushes the pipette tip upward, causing the first rubber sheet to fold, thereby generating friction to prevent the pipette tip from moving downward, allowing the pipette to be pulled out of the pipette tip. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a partial sectional view of the present invention;

[0016] Figure 3 This is a demonstration of the threaded opening of this utility model;

[0017] Figure 4 This is an illustration of the first rubber sheet and the second rubber sheet of this utility model.

[0018] In the diagram: 1. Collection groove; 2. Fixing sleeve; 3. First fixing bolt; 4. Support rod; 5. Second fixing bolt; 6. Threaded opening; 7. Support plate; 8. Fixing opening; 9. Limiting groove; 10. Fixing clamp; 11. Spring; 12. Arc-shaped rubber clamp; 13. First rubber sheet; 14. Second rubber sheet; 15. Fixing groove; 16. Spring piece; 17. Suction cup; 18. Inclined surface. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Example, refer to Figure 1-4 A portable pipette tip placement device for detecting pesticide residues in agricultural products includes a collection tank 1. A fixing sleeve 2 is provided at both ends of the collection tank 1. A detachable, vertically positioned support rod 4 is slidably connected inside each fixing sleeve 2. A first fixing bolt 3 for fixing the corresponding support rod 4 is threadedly connected to the middle of the end of each fixing sleeve 2 furthest from the collection tank 1. A detachable support plate 7 is horizontally positioned between the upper ends of the two support rods 4. A threaded opening 6 is provided at the middle of both ends of the support plate 7. A second fixing bolt 5, threaded to the corresponding threaded opening 6, is rotatably connected to the upper end of each support rod 4. This device facilitates the installation and removal of the support rods 4 and the support plate 7, making it easy to carry. Residual liquid in the pipette tip can drip into the collection tank 1 for unified collection and treatment, reducing contamination.

[0024] The support plate 7 has several equally spaced fixing openings 8 at both the front and rear ends. Each fixing opening 8 has a limiting groove 9 at both the left and right ends. Each limiting groove 9 has a fixing block 10 slidably connected inside. Each fixing block 10 and the corresponding limiting groove 9 are provided with two springs 11 at intervals. The spring force can easily clamp the pipette tip. Each fixing block 10 is provided with an inclined surface 18 that is inclined from the outside to the inside, which can easily allow the pipette tip to be inserted between the two corresponding fixing blocks 10.

[0025] Each fixed clamp 10 has a rubber arc-shaped clamp at the end away from the corresponding spring 11, which can easily fit the pipette tip and thus clamp the pipette tip more stably. Each rubber arc-shaped clamp has several first rubber sheets 13 evenly spaced on the upper side of the end away from the corresponding fixed clamp 10, which are inclined from bottom to top, and can provide friction when the pipette tip is pulled upward. Each rubber arc-shaped clamp has several second rubber sheets 14 evenly spaced on the lower side of the end away from the corresponding fixed clamp 10, which are inclined from top to bottom, and can provide friction when the pipette tip is pulled upward.

[0026] Instructions for use: First, fix the collection tank 1 with the suction cup 17. Then, insert the support plate 7 into the corresponding fixing sleeve 2. Rotate the first fixing bolt 3 to fix the support rod 4. Screw the second fixing bolt 5 into the corresponding threaded port 6. Fix the support plate 7 above the collection tank 1 with the support rod 4. Then, insert the labels of the liquids to be tested into the fixing slots 15 on the support plate 7 in sequence. The two spring pieces 16 in the fixing slots 15 will clamp and fix the corresponding labels. Then, insert the pipette tip into the fixing port 8 near the corresponding jig to prevent confusion when using the pipette tips.

[0027] Then, the pipette tip is inserted between the two rubber arc-shaped clamps in the same fixed port 8. When the pipette tip is needed, the pipette is first inserted into the corresponding pipette tip. The pipette pushes the pipette tip downward, and the pipette tip will cause the second rubber sheet 14 to fold downward. The friction between the second rubber sheet 14 and the pipette tip will generate resistance to prevent the pipette tip from moving downward, allowing the pipette to be inserted into the pipette tip. Then, the pipette is pulled out of the fixed port 8 by the pipette. The pipette tip pushes the fixed clamp 10 to slide relative to the limiting groove 9, compressing the spring 11 and pulling the pipette tip out from between the two fixed clamps 10, thus completing the installation of the pipette tip.

[0028] When the pipette tip needs to be replaced, push the pipette tip into the corresponding fixing port 8. The pipette tip pushes the corresponding fixing block 10 to interact with the limiting groove 9, compressing the spring 11 and locking the pipette tip between the two arc-shaped rubber clamps 12. The spring 11 holds it in place, and then pull the pipette out of the pipette tip. The pipette tip will cause the first rubber sheet 13 to fold upward. The friction between the first rubber sheet 13 and the pipette tip will generate resistance to prevent the pipette tip from moving upward. Pull the pipette out and then replace it with a different pipette tip. The liquid remaining in the pipette tip falls into the collection tank 1 for unified collection and treatment.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A portable pipette tip placement device for detecting pesticide residues in agricultural products, comprising a collection tank (1), characterized in that: The collection trough (1) is provided with detachable support rods (4) at both ends of the left and right sides. A detachable support plate (7) is provided horizontally between the upper ends of the two support rods (4). The support plate (7) is provided with several fixed openings (8) at equal intervals at both ends of the front and rear. Each fixed opening (8) is provided with a limit groove (9) at both ends of the left and right sides. Each limit groove (9) is slidably connected with a fixed clamping block (10). Each fixed clamping block (10) is provided with multiple springs (11) at equal intervals with the corresponding limit groove (9). Each fixed clamp (10) is provided with an arc-shaped rubber clamp (12) at the end away from the corresponding spring (11). Each arc-shaped rubber clamp (12) is provided with several first rubber pieces (13) at equal intervals on the upper side of the end away from the corresponding fixed clamp (10), which are cut obliquely from top to bottom. Each arc-shaped rubber clamp (12) is provided with several second rubber pieces (14) at equal intervals on the lower side of the end away from the corresponding fixed clamp (10), which are cut obliquely from bottom to top. The upper end of the support plate (7) is provided with a fixing groove (15) near each fixing port (8). The front and rear ends of the fixing groove (15) are provided with spring pieces (16). The lower end of the collection groove (1) is provided with multiple suction cups (17) at equal intervals.

2. The portable pipette tip placement device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The collection trough (1) is provided with a fixing sleeve (2) at both the left and right ends. Each support rod (4) is slidably connected to the corresponding fixing sleeve (2). The end of each fixing sleeve (2) away from the collection trough (1) is threaded with a first fixing bolt (3).

3. The portable pipette tip placement device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The support plate (7) has threaded openings (6) at both the left and right ends, and the upper end of each support rod (4) is rotatably connected with a second fixing bolt (5) that is threaded to the corresponding threaded opening (6).

4. The portable pipette tip placement device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: Each fixed clamp (10) is provided with an inclined surface (18) that is inclined from the outside to the inside.

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