A pesticide residue detector and a sample mixing mechanism thereof

Abstract

This utility model provides a pesticide residue detector and its sample mixing mechanism, comprising: a detection body, a detection box at the left end of the detection body, an oscillation mechanism for accelerating chemical reactions inside the detection box, a clamping mechanism for fixing sample tubes on the oscillation mechanism, and a support column with a support plate fixedly connected to the upper end of the support column. Compared with the prior art, this utility model has the following advantages: by setting up an oscillation mechanism, a drive motor is used to drive the support column and the support plate to generate rapid rotational oscillation. Rapid oscillation can effectively break up sample tissues, accelerate the dissolution and diffusion of pesticide residues, and allow the target substance to be released more completely into the solvent, thereby avoiding detection deviations caused by uneven mixing. By setting up a clamping mechanism, hard collisions between the test tubes and the clamps during the oscillation mixing process are avoided, which could lead to test tube breakage.

Description

Technical Field

[0001] This utility model belongs to the field of pesticide detection, and specifically relates to a pesticide residue detector and its sample mixing mechanism. Background Technology

[0002] A pesticide detection device is an analytical instrument used to rapidly determine pesticide residues in agricultural products, food, or the environment. Its working principle is typically based on techniques such as chemical colorimetry, enzyme inhibition, chromatographic separation, or spectroscopic detection. It reacts the target pesticide in the sample with a specific reagent to generate a detectable signal (such as color change, electrochemical response, or fluorescence intensity), thereby quantitatively or qualitatively analyzing the pesticide residue level. If the detection device lacks an oscillation mechanism and relies solely on static diffusion, the reagent and sample will not mix sufficiently, leading to a series of problems. First, because pesticide residue distribution may be uneven (e.g., differences in residue levels between the surface and interior of vegetables), if the reagent cannot fully penetrate or contact all the analytes, the reaction will be incomplete, resulting in low signal intensity, false negatives, or quantitative errors. Therefore, we aim to design a pesticide residue detector and its sample mixing mechanism to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pesticide residue detector and its sample mixing mechanism to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a pesticide residue detector and its sample mixing mechanism, comprising: a detection body, a detection box provided at the left end of the detection body, an oscillation mechanism for accelerating chemical reactions provided inside the detection box, and a clamping mechanism for fixing sample tubes provided on the oscillation mechanism;

[0005] The oscillation mechanism includes a support column, and a support disk is fixedly connected to the upper end of the support column;

[0006] The oscillation mechanism also includes four fixed shafts, each with a connecting cylinder movably sleeved on its outer side. The connecting cylinder is cylindrical and its other end is fixedly connected to a support column. Adjacent connecting cylinders are fixedly connected by connecting rods. The fixed shafts at both ends are fixedly connected to the inner surface of the detection chamber. By setting up the oscillation mechanism, the sample and extraction solvent are ensured to be fully and uniformly mixed, thereby improving the accuracy and efficiency of the detection.

[0007] In a preferred embodiment, the bottom inner side of the testing box is provided with a drive motor for driving the support column and support plate to shake.

[0008] In a preferred embodiment, a connecting block is provided on the output shaft of the drive motor, and a drive rod is fixedly connected to the connecting block. The other end of the drive rod is fixedly connected to the lower surface of the support column.

[0009] In a preferred embodiment, the clamping mechanism includes a clamping seat, which is fixedly connected to the upper surface of the support plate. The clamping seat has a test tube hole for placing the test tube. By setting the clamping mechanism, hard collisions between the test tube and the clamping seat during the oscillation and mixing process are avoided, which could lead to the test tube breaking.

[0010] As a preferred embodiment, the inner side of the test tube hole is provided with a protective pad made of rubber for anti-slip fixation and to relieve clamping pressure.

[0011] In a preferred embodiment, a clamping block is movably fitted inside the test tube hole, a transmission rod is fixedly connected to the lower side of the clamping block, and a linkage rod is fixedly sleeved inside the transmission rod.

[0012] In a preferred embodiment, a clamping cylinder is provided on the right side of the clamping seat, and the telescopic end of the clamping cylinder is fixedly connected to the right end of the linkage rod.

[0013] In a preferred embodiment, the inner bottom of the clamp is provided with a rubber cushion to prevent hard collisions between the test tube and the clamp.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] 1. By setting up an oscillation mechanism, the drive motor drives the support column and support plate to generate rapid rotational oscillation. The rapid oscillation can effectively break up the sample tissue, accelerate the dissolution and diffusion of pesticide residues, and allow the target substance to be released more completely into the solvent, thereby avoiding detection deviations caused by uneven mixing.

[0016] 2. By setting up a clamping mechanism, hard collisions between the test tube and the clamp can be avoided during the oscillation and mixing process, which could lead to the breakage of the test tube. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0018] Figure 1 This is a three-dimensional view of the overall structure of a pesticide residue detector and its sample mixing mechanism according to the present invention.

[0019] Figure 2 This is a partial exploded view of a pesticide residue detector and its sample mixing mechanism according to the present invention.

[0020] Figure 3 This is a perspective view of the clamping mechanism of a pesticide residue detector and its sample mixing mechanism according to the present invention.

[0021] Figure 4 This is a perspective view of the front side of the clamping mechanism of a pesticide residue detector and its sample mixing mechanism according to the present invention.

[0022] In the diagram, 1-detection body, 2-detection box, 3-oscillation mechanism, 4-clamping mechanism;

[0023] 31-Support column, 32-Support plate, 33-Fixed shaft, 34-Connecting cylinder, 35-Connecting rod, 36-Drive motor, 37-Connecting block, 38-Drive rod;

[0024] 41-Clamping seat, 411-Test tube hole, 412-Protective pad, 42-Clamping block, 43-Transmission rod, 44-Linkage rod, 45-Clamping cylinder, 46-Buffer pad; Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 as well as Figure 2 As the first embodiment of this utility model:

[0027] A pesticide residue detector and its sample mixing mechanism include: a detection body 1, a detection box 2 at the left end of the detection body 1, an oscillation mechanism 3 for accelerating chemical reactions inside the detection box 2, and a clamping mechanism 4 for fixing sample tubes on the oscillation mechanism.

[0028] The oscillation mechanism 3 includes a support column 31, and a support disk 32 is fixedly connected to the upper end of the support column 31;

[0029] The oscillation mechanism 3 also includes four fixed shafts 33. Connecting cylinders 34 are movably sleeved on the outer side of each of the four fixed shafts 33. The connecting cylinders 34 are cylindrical and their other ends are fixedly connected to the support column 31. Adjacent connecting cylinders 34 are fixedly connected to each other by connecting rods 35. The left and right fixed shafts 33 are fixedly connected to the inner surface of the detection box 2. By setting the oscillation mechanism 3, the sample and the extraction solvent are fully and uniformly mixed to improve the accuracy and efficiency of the detection.

[0030] The bottom inner side of the test box 2 is equipped with a drive motor 36 for driving the support column 31 and the support plate 32 to shake.

[0031] A connecting block 37 is provided on the output shaft of the drive motor 36, and a drive rod 38 is fixedly connected to the connecting block 37. The other end of the drive rod 38 is fixedly connected to the lower surface of the support column 31.

[0032] Specifically, before detecting pesticide residues, the drive motor 36 is first started. During the rotation of the output shaft of the drive motor 36, the connecting block 37 rotates. The connecting block 37 is fixedly connected to the drive rod 38 and has an L-shaped structure. The drive rod 38 drives the upper support column 31 to shake. The outer end of the support column 31 is fixedly connected to the connecting cylinder 34. The connecting rod 35 assists the shaking action of the support 31 through cooperation with the fixed shaft 33 and the connecting cylinder 34, thereby causing the support column 31 to drive the support plate 32 above it to shake as well. Finally, the support plate 32 drives the test tube fixed by the clamping mechanism 4 to rotate, thereby realizing the oscillation and mixing of the sample inside the test tube, so that the target substance is released more completely into the extraction solvent, thereby avoiding detection deviations caused by uneven mixing.

[0033] Please see Figures 1-4 As a second embodiment of this utility model:

[0034] The clamping mechanism 4 includes a clamping seat 41, which is fixedly connected to the upper surface of the support plate 32. The clamping seat 41 has a test tube hole 411 for placing test tubes. By setting the clamping mechanism 4, hard collisions between the test tubes and the clamping seat 41 during the oscillation and mixing process are avoided, which would lead to the breakage of the test tubes.

[0035] The inner side of the test tube hole 411 is provided with a protective pad 412 made of rubber for anti-slip fixation and to relieve clamping pressure.

[0036] A clamping block 42 is movably fitted inside the test tube hole 411, and a transmission rod 35 is fixedly connected to the lower side of the clamping block 42. A linkage rod 44 is fixedly sleeved inside the transmission rod 35.

[0037] A clamping cylinder 45 is provided on the right side of the clamping seat 41, and the telescopic end of the clamping cylinder 45 is fixedly connected to the right end of the linkage rod 44.

[0038] The bottom inner side of the clamp 41 is provided with a rubber cushion to prevent hard collisions between the test tube and the clamp 41.

[0039] Based on the above embodiments, further, when it is necessary to fix the test tube, first pass the test tube through the test tube hole 411 and place its bottom on the buffer pad, and then activate the clamping cylinder 45. The extension and retraction end of the clamping cylinder 45 simultaneously drives the linkage rod 44 to extend and retract. During the extension and retraction process, the linkage rod 44 drives the connecting rod 35 and the clamping block 42 to generate displacement to clamp the test tube, so as to avoid a hard collision between the test tube and the clamping seat 41 during the oscillation and mixing process, which would lead to the test tube breaking.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pesticide residue detector and its sample mixing mechanism, comprising: The detection body (1) is characterized in that a detection box (2) is provided at the left end of the detection body (1), and an oscillation mechanism (3) for improving the mixing uniformity is provided inside the detection box (2), and a clamping mechanism (4) for fixing the sample tube is provided on the oscillation mechanism. The oscillation mechanism (3) includes a support column (31), and a support disk (32) is fixedly connected to the upper end of the support column (31); The oscillation mechanism (3) also includes four fixed shafts (33), and a connecting cylinder (34) is movably sleeved on the outer side of each of the four fixed shafts (33). The connecting cylinder (34) is a cylindrical structure and its other end is fixedly connected to the support column (31). Adjacent connecting cylinders (34) are fixedly connected to each other by a connecting rod (35). The fixed shafts (33) at the left and right ends are fixedly connected to the inner surface of the detection box (2).

2. The pesticide residue detector and its sample mixing mechanism as described in claim 1, characterized in that: The bottom inner side of the detection box (2) is equipped with a drive motor (36) for driving the support column (31) and support plate (32) to shake.

3. The pesticide residue detector and its sample mixing mechanism as described in claim 2, characterized in that: A connecting block (37) is provided on the output shaft of the drive motor (36), and a drive rod (38) is fixedly connected to the connecting block (37). The other end of the drive rod (38) is fixedly connected to the lower surface of the support column (31).

4. The pesticide residue detector and its sample mixing mechanism as described in claim 1, characterized in that: The clamping mechanism (4) includes a clamping seat (41), which is fixedly connected to the upper surface of the support plate (32). The clamping seat (41) has a test tube hole (411) for placing test tubes.

5. The pesticide residue detector and its sample mixing mechanism as described in claim 4, characterized in that: The inner side of the test tube hole (411) is provided with a protective pad (412) made of rubber for anti-slip fixation and to relieve clamping pressure.

6. The pesticide residue detector and its sample mixing mechanism as described in claim 4, characterized in that: A clamping block (42) is movably fitted inside the test tube hole (411), and a transmission rod (43) is fixedly connected to the lower side of the clamping block (42). A linkage rod (44) is fixedly sleeved inside the transmission rod (43).

7. The pesticide residue detector and its sample mixing mechanism as described in claim 4, characterized in that: A clamping cylinder (45) is provided on the right side of the clamping seat (41), and the telescopic end of the clamping cylinder (45) is fixedly connected to the right end of the linkage rod (44).

8. The pesticide residue detector and its sample mixing mechanism as described in claim 4, characterized in that: The bottom inner side of the clamp (41) is provided with a rubber cushion to prevent hard collisions between the test tube and the clamp (41).

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