Centrifuge tube placing tray for pesticide residue detection

Abstract

The utility model belongs to the technical field of components of pesticide residue detection equipment, and particularly relates to a centrifuge tube placing tray for pesticide residue detection, which comprises a tray main body, a plurality of insertion holes are arranged on the tray main body and used for inserting centrifuge tubes, and a fixing part is further arranged in the tray main body and used for fixing the centrifuge tubes during centrifugal treatment. The tray body and the fixing parts are coaxially arranged, a connecting shaft is arranged in the middle of the tray body, the fixing parts comprise the first fixing parts and the second fixing parts, and the first fixing parts and the second fixing parts are provided with fixing structures with the same number as the inserting holes and used for fixing centrifugal tubes in the axial direction and the axial direction. The rotation of the tray does not interfere with other mechanisms, the centrifugal tube can be axially clamped and fixed through the fixing piece, the centrifugal tube can be conveniently withdrawn and replaced, and a part of mechanical structure can be simplified when the tray is matched with mechanical equipment for use.

Description

Technical Field

[0001] This utility model belongs to the technical field of pesticide residue detection equipment components, specifically a centrifuge tube placement tray for pesticide residue detection. Background Technology

[0002] Traditional trays typically use a fixed hole design, which limits the amount of samples that can be processed at one time, making it difficult to meet the high-throughput requirements of modern pesticide residue testing laboratories. They also rely on complex external mechanical structures (such as multi-degree-of-freedom robotic arms) for clamping and fixing, and each sample replacement is time-consuming. Sample loading, fixing, centrifugation, and unloading require multiple mechanical positioning steps.

[0003] Therefore, it is necessary to design a mechanical structure that facilitates sample return and replacement operations and can clamp and fix the sample without the need for a complex external mechanical structure. Utility Model Content

[0004] Therefore, it is necessary to provide a centrifuge tube placement tray for pesticide residue detection, which significantly improves detection efficiency, ease of operation, and equipment economy.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A centrifuge tube placement tray for pesticide residue detection includes a tray body, which includes a connecting shaft and an annular structure. The annular structure has several insertion holes for inserting centrifuge tubes. The tray body also has fixing components for fixing the centrifuge tubes during centrifugation. The fixing components are coaxially arranged and include a first fixing component and a second fixing component. The first fixing component and the second fixing component have the same number of fixing structures as the insertion holes for fixing the centrifuge tubes axially.

[0007] Optionally, in one embodiment of the present invention, the bottom of the connecting shaft is provided with a guide portion that protrudes downward in the shape of a frustum, for stacking multiple trays.

[0008] Optionally, in one embodiment of the present invention, the upper end of the connecting shaft is provided with a recessed mating groove for mating with the guide portion to form a limiting position.

[0009] Optionally, in one embodiment of the present invention, both the first fixing member and the second fixing member are ratchet structures.

[0010] Optionally, in one embodiment of the present invention, a plurality of fixing grooves are provided on the outer side of the upper part of the connecting shaft, and the plurality of fixing grooves are arranged equidistantly around it for use in conjunction with external mechanical clamping.

[0011] Optionally, in one embodiment of the present invention, the first fixing member is provided with a first fixing part that fits against the lower end of the centrifuge tube.

[0012] Optionally, in one embodiment of the present invention, the second fixing member is provided with a second fixing part that fits against the side of the centrifuge tube.

[0013] Optionally, in one embodiment of the present invention, a plurality of connecting arms are provided between the connecting shaft and the annular structure.

[0014] Optionally, in one embodiment of the present invention, both the first fixing member and the second fixing member include an annular ratchet, a central ring and a connecting rod, wherein the annular ratchet and the central ring are connected by multiple connecting rods, and the connecting rods are located on the circumferential rotation path of the connecting arm.

[0015] Optionally, in one embodiment of the present invention, the front end of the connecting arm is provided with a clearance opening for avoiding the annular ratchet of the second fixing member.

[0016] The beneficial effects of this utility model are:

[0017] This utility model provides a centrifuge tube placement tray for pesticide residue testing. The tray can be used to place multiple centrifuge tubes at the same time. The tray has a built-in ratchet structure to fix the centrifuge tubes circumferentially. The tray has a relatively simple structure, and its rotation will not interfere with the external mechanical structure. It also makes it convenient for the tester to change the centrifuge tubes on the tray. The connecting shaft in the center of the tray has a fixing groove to cooperate with external mechanical clamping operations. The connecting shaft has a docking groove and a guide part, and multiple trays can be stably stacked. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram A of the overall structure of a centrifuge tube placement tray for pesticide residue detection according to Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram (B) of the overall structure of a centrifuge tube placement tray for pesticide residue detection according to Embodiment 1 of this utility model;

[0021] Figure 3 This is a schematic diagram of the main structure of the tray in Embodiment 1 of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the first and second fixing members in Embodiment 1 of this utility model.

[0023] Reference numerals: 1. Ring structure, 101. Insertion hole, 102. First receiving groove, 103. Second receiving groove, 2. Connecting shaft, 201. Connecting part, 202. Fixing groove, 203. Connecting arm, 3. First fixing member, 4. Second fixing part, 401. Central ring, 402. Connecting rod, 403. Second fixing member, 5. First fixing part, 501. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0025] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" 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 component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0026] Example 1

[0027] Existing centrifuge tube placement trays are inconvenient to use, require more complex external mechanical structures, and have a relatively small sample size for a single test. Therefore, a new centrifuge tube placement tray for pesticide residue detection was designed, as follows:

[0028] like Figure 1-4 As shown, a centrifuge tube placement tray for pesticide residue detection includes a tray body, which includes a connecting shaft 2 and an annular structure 1. The annular structure 1 has a plurality of insertion holes 101 for inserting centrifuge tubes. In this embodiment, the shape of the insertion holes 101 is contoured to the shape of the centrifuge tubes to accommodate their insertion. The tray body also has fixing members for fixing the centrifuge tubes during centrifugation. The fixing members are coaxially arranged and include a first fixing member 4 and a second fixing member 5. The first fixing member 4 and the second fixing member 5 have the same number of fixing structures as the insertion holes 101 for fixing the centrifuge tubes axially.

[0029] In this embodiment, the annular structure 1 has twenty insertion holes 101, which are equidistantly distributed on the annular structure 1 and are vertically connected, so that twenty centrifuge tubes can be placed on the annular structure 1 at the same time.

[0030] The bottom of the connecting shaft 2 is provided with a guide part 202 that protrudes downward in the shape of a frustum, which is used for stacking multiple pallets. The upper end of the connecting shaft 2 is provided with a recessed docking groove 201, which is used to dock with the guide part 202 to form a limit. When multiple pallets are stacked, the guide part 202 of the upper pallet can be put into the docking groove 201 of the lower pallet, and the two fit together, so that the two pallets are stacked stably.

[0031] Both the first fixing member 4 and the second fixing member 5 are ratchet structures. In use, the ratchet structure, in conjunction with the ring structure 1, completes the clamping and fixing of the centrifuge tube.

[0032] Multiple fixing slots 203 are provided on the outer side of the upper part of the connecting shaft 2. The multiple fixing slots 203 are equidistantly arranged around the shaft for use with external mechanical clamping. In this embodiment, the connecting shaft 2 has four fixing slots 203. The cross-section of the fixing slots 203 is trapezoidal. The external mechanical clamps are equipped with claws that match the fixing slots 203 and can be inserted into the fixing slots 203 to clamp the placed tray.

[0033] The first fixing member 4 is provided with a first fixing part 501 that fits against the lower end of the centrifuge tube. The first fixing part 501 is used to contact the side of the centrifuge tube and cooperate with the inner wall of the insertion hole 101 to complete the positioning and clamping of the centrifuge tube.

[0034] The second fixing member 5 is provided with a second fixing part 401 that fits against the side of the centrifuge tube. The second fixing part 401 is used to contact the lower end of the centrifuge tube and cooperate with the lower end of the insertion hole 101 to limit the lower end of the centrifuge tube.

[0035] Multiple connecting arms 3 are provided between the connecting shaft 2 and the annular structure 1. In this embodiment, four connecting arms 3 are provided circumferentially on the connecting shaft 2. The four connecting arms 3 are arranged in a vertical relationship and are fixedly connected to the inner sidewall of the annular structure 1 to ensure the overall structural strength.

[0036] Both the first fixing member 4 and the second fixing member 5 include an annular ratchet, a central ring 402, and a connecting rod 403. The annular ratchet and the central ring 402 are connected by multiple connecting rods 403. The connecting rods 403 are located on the circumferential rotation path of the connecting arm 3. In this embodiment, both the first fixing member 4 and the second fixing member 5 are provided with four "L"-shaped connecting rods 403. The lower end of the connecting rod 403 is connected to the annular ratchet, and the upper end of the connecting rod 403 is connected to the bottom of the central ring 402. The four connecting rods 403 are also distributed in a "+" shape to ensure the structural strength of the first fixing member 4 and the second fixing member 5. The size of the central ring 402 of the first fixing member 4 is smaller than that of the central ring 402 of the second fixing member 5, and the height of the central ring 402 of the first fixing member 4 is higher than that of the central ring 402 of the second fixing member 5. The annular ratchet of the first fixing member 4 is referred to as the first ratchet, and the annular ratchet of the second fixing member 5 is referred to as the second ratchet. Both the first ratchet and the second ratchet are provided with a number of fixing teeth equal to the number of insertion holes 101. The first fixing part 501 of the first ratchet is an arc surface to fit the side of the centrifuge tube, which is a screw-type pointed-bottom centrifuge tube. The second fixing part 401 of the second ratchet is a fan-shaped arc surface to fit the lower end of the centrifuge tube.

[0037] The bottom of the annular structure 1 is provided with a first receiving groove 102 for placing the annular ratchet of the first fixing member 4, and can ensure the overall aesthetics of the tray. The middle part of the annular structure 1 is provided with a second receiving groove 103 for installing the annular ratchet of the second fixing member 5.

[0038] The front end of the connecting arm 3 is provided with a clearance opening to avoid the annular ratchet of the second fixing member 5, so as to avoid interfering with the rotational displacement of the annular ratchet of the second fixing member 5. In this embodiment, the connecting arm 3 is also provided with a through hole that runs vertically through the top and bottom, which can reduce the weight of the tray without affecting the structural strength.

[0039] Working principle:

[0040] First, place the centrifuge tubes into the insertion holes 101 of the tray. The mechanically controlled second fixing member 5 starts to rotate counterclockwise. After the second fixing member 5 clamps and positions the centrifuge tubes, it drives the tray body to rotate accordingly. Meanwhile, the connecting rod 403 of the first fixing member 4 abuts against one side of the connecting arm 3. The first fixing member 4 will also rotate with the tray to complete the clamping and positioning of the centrifuge tubes.

[0041] When removing the centrifuge tube, the movement is in the opposite direction, which allows the second fixing member 5 to loosen its clamping and positioning of the centrifuge tube and the first fixing member 4 to loosen its axial limit on the centrifuge tube, so that the centrifuge tube can be taken out. All of the above actions can be completed by a single rotary drive source.

[0042] The placement tray of this solution can hold twenty centrifuge tubes at the same time. The placement tray has two movable ratchet structures inside, which can fix the centrifuge tubes circumferentially and axially. The overall structure of the tray is relatively simple, and the rotation will not interfere with the external mechanical structure. It is also convenient for the inspector to remove and replace the centrifuge tubes on the tray. The connecting shaft 2 in the center of the tray has a fixing groove 203, which can be used for external mechanical clamping operations. The top and bottom of the connecting shaft 2 are respectively provided with docking grooves 201 and guide parts 202, so that multiple placement trays can be placed stably when stacked.

[0043] Example 2

[0044] In this embodiment, the structure of the tray is basically the same as that in embodiment 1. The difference is that the fixing teeth of the second ratchet are set in the opposite direction. When the main body of the tray is rotated counterclockwise, the second ratchet can contact the side of the centrifuge tube while the second ratchet is stationary, thus completing the circumferential clamping and positioning.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A centrifuge tube placement tray for pesticide residue detection, characterized in that: The device includes a tray body, which comprises a connecting shaft and an annular structure. The annular structure has several insertion holes for inserting centrifuge tubes. The tray body also has fixing components for fixing the centrifuge tubes during centrifugation. The fixing components are coaxially arranged and include a first fixing component and a second fixing component. The first fixing component and the second fixing component have the same number of fixing structures as the insertion holes for fixing the centrifuge tubes axially.

2. The centrifuge tube placement tray for pesticide residue detection according to claim 1, characterized in that: The bottom of the connecting shaft is provided with a guide portion that protrudes downward in the shape of a frustum, for stacking multiple trays.

3. A centrifuge tube placement tray for pesticide residue detection according to claim 1, characterized in that: The upper end of the connecting shaft is provided with a concave frustum-shaped docking groove, which is used to dock with the guide part to form a limiting position.

4. A centrifuge tube placement tray for pesticide residue detection according to claim 1, characterized in that: Both the first and second fixing components are ratchet structures.

5. A centrifuge tube placement tray for pesticide residue detection according to claim 1, characterized in that: Multiple fixing slots are provided on the outer side of the upper part of the connecting shaft. The multiple fixing slots are arranged equidistantly around the shaft for use with external mechanical clamping.

6. A centrifuge tube placement tray for pesticide residue detection according to claim 1, characterized in that: The first fixing member is provided with a first fixing part that fits against the lower end of the centrifuge tube.

7. A centrifuge tube placement tray for pesticide residue detection according to claim 1, characterized in that: The second fixing member is provided with a second fixing part that fits against the side of the centrifuge tube.

8. A centrifuge tube placement tray for pesticide residue detection according to claim 1, characterized in that: Multiple connecting arms are provided between the connecting shaft and the annular structure.

9. A centrifuge tube placement tray for pesticide residue detection according to claim 1, characterized in that: Both the first and second fixing components include an annular ratchet, a central ring, and a connecting rod. The annular ratchet and the central ring are connected by multiple connecting rods, which are located on the circumferential rotation path of the connecting arm.

10. A centrifuge tube placement tray for pesticide residue detection according to claim 8, characterized in that: The front end of the connecting arm has a clearance opening to avoid the annular ratchet of the second fixing component.

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