Low temperature stability test device for pesticide detection

Abstract

The application discloses a low-temperature stability test device for pesticide detection and belongs to the technical field of pesticide detection equipment. The low-temperature stability test device comprises a low-temperature stability test instrument main body, a control panel is fixedly installed on the front side of the low-temperature stability test instrument main body, and a sealing cover is rotationally connected to the top of the low-temperature stability test instrument main body. The centrifugal motor is arranged at the bottom of the centrifugal cavity, and the rotating frame is driven to rotate by the centrifugal motor, so that the centrifugal stirring operation can be directly completed in a low-temperature environment, temperature fluctuation caused by sample transfer in the traditional process is avoided, the test condition is stable, the object shelf is installed on the rotating frame through cooperation between the mounting groove and the fixing rod, the bottom of the test tube is nested in the object groove, the upper end of the test tube is fixed through the circular hole, double limiting is formed, test tube displacement in the centrifugal process is effectively prevented, after the test is completed, all the test tubes can be taken out at one time by taking the object shelf, and the operation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of pesticide testing equipment technology, and in particular to a low-temperature stability testing device for pesticide testing. Background Technology

[0002] The low-temperature stability tester is designed and manufactured according to the low-temperature stability testing requirements for pesticide technicals and formulations analyzed by the International Committee for Pesticide Analysis (ICPA). The instrument employs precision platinum resistance thermometry, microcomputer control, and a large-screen LCD display, achieving automation of the working process. It features high temperature control accuracy, stable and reliable performance, simple operation, and intuitive operation, making it an ideal instrument for pesticide quality inspection, commercial inspection, and technical supervision.

[0003] The published patent document with announcement number CN208443768U discloses a pesticide low-temperature stability tester. This published patent document uses a sample carrier box to allow all samples placed in the sample carrier box to be removed at once, saving the time required for sample removal and improving work efficiency. At the same time, it avoids the situation where the top cover of the refrigerator is kept open for a long time, which would require the refrigeration chamber to be kept open for a long time, resulting in high energy consumption of the tester. However, when using the above device, the reagent tubes need to be manually removed from the sample carrier box and then centrifuged and stirred. This is not only time-consuming and laborious, but also causes temperature fluctuations due to sample transfer, which can interfere with the test. Utility Model Content

[0004] In view of the shortcomings of the prior art, this application provides a low-temperature stability testing device for pesticide detection, which overcomes the shortcomings of the prior art and aims to solve the problems in the prior art.

[0005] To achieve the above objectives, this application provides the following technical solution: a low-temperature stability testing device for pesticide testing, comprising a low-temperature stability testing instrument body, a control panel fixedly installed on the front side of the low-temperature stability testing instrument body, a sealing cover rotatably connected to the top of the low-temperature stability testing instrument body, a centrifuge chamber opened inside the low-temperature stability testing instrument body, a centrifuge motor fixedly installed at the bottom of the centrifuge chamber, a rotating frame fixedly connected to the output end of the centrifuge motor, a storage slot opened inside the centrifuge chamber, a test tube slidably inserted into the storage slot, an installation groove opened on the upper surface of the rotating frame, a fixing rod slidably inserted into the installation groove, a storage rack fixedly connected to the upper end of the fixing rod, and a circular hole through which the test tube passes through the upper surface of the storage rack.

[0006] By adopting the above technical solution, a centrifugal motor is installed at the bottom of the centrifuge chamber, and the centrifugal motor drives the rotating frame to rotate. Centrifugation and stirring operations can be completed directly in a low-temperature environment, avoiding temperature fluctuations caused by sample transfer in traditional processes and ensuring stable test conditions. The rack is installed on the rotating frame through the cooperation between the mounting slot and the fixing rod. The bottom of the test tube is nested in the mounting slot, and the upper end of the test tube is fixed through the round hole, forming a double limit, which effectively prevents the test tube from shifting during centrifugation. After the experiment, all test tubes can be removed at once by taking out the rack, which helps to improve operational efficiency.

[0007] As a preferred technical solution of this application, the outer diameter of the fixing rod is adapted to the inner diameter of the mounting groove, a pin is fixedly connected inside the mounting groove, a fixing hole for inserting the pin is opened at the bottom of the fixing rod, and a retrieval slot is opened at the center of the upper surface of the shelf.

[0008] By adopting the above technical solution, the fixing rod is locked with the pin in the mounting slot through the fixing hole at the bottom to form a rigid connection, ensuring that the shelf has no risk of loosening during high-speed centrifugation, significantly improving its vibration resistance, and allowing staff to insert their fingers into the retrieval slot to take out the shelf.

[0009] As a preferred technical solution of this application, the number of the mounting slots, pins, shelves, fixing rods and fixing holes are all four and correspond one-to-one. The four mounting slots are evenly distributed in a circular array on the upper surface of the rotating frame.

[0010] By adopting the above technical solution, the four sets of support points are arranged in a circular array to ensure that the centrifugal force can be evenly distributed during high-speed rotation.

[0011] As a preferred technical solution of this application, a rubber pad is fixedly connected to the bottom of the storage slot, and the top of the rubber pad is in contact with the bottom of the test tube.

[0012] By adopting the above technical solution, the bottom of the test tube is cushioned and protected by a rubber pad, preventing the bottom of the test tube from being damaged by bumps when placed.

[0013] As a preferred technical solution of this application, a rubber fixing ring is fixedly connected to the inner wall of the circular hole, the inner wall of the rubber fixing ring abuts against the outer wall of the test tube, and the upper end of the test tube is provided with a protruding edge that engages with the shelf.

[0014] By adopting the above technical solution, the test tubes are clamped and fixed inside the round hole by setting a rubber fixing ring. The convex edge at the top of the test tube forms a rigid snap-fit ​​structure with the upper surface of the shelf, so that the shelf can move with the test tubes when it moves upward, thereby removing all the test tubes at once.

[0015] As a preferred technical solution of this application, a handle is fixedly connected to the front side of the sealing cover, a magnet is embedded in the lower surface of the sealing cover, and a magnet is embedded in the upper surface of the body of the low temperature stability tester, which is magnetically attracted to the magnet.

[0016] By adopting the above technical solution, the magnetic effect between magnet one and magnet two is used to make the sealing cover fit tightly with the body of the low temperature stability tester, thus ensuring the test's airtightness.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: In this invention, a centrifugal motor is installed at the bottom of the centrifuge chamber, and the rotating frame is driven by the centrifugal motor to rotate. This allows for centrifugal stirring operations to be completed directly in a low-temperature environment, avoiding temperature fluctuations caused by sample transfer in traditional processes and ensuring stable test conditions. The rack is installed on the rotating frame through the cooperation between the mounting slot and the fixing rod. The bottom of the test tube is nested in the mounting slot, and the upper end of the test tube is fixed through the round hole, forming a double limit, which effectively prevents the test tube from shifting during centrifugation. After the experiment, all test tubes can be removed at once by taking out the rack, which helps to improve operational efficiency.

[0018] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the ways in which the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereto. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the working state structure of this application; Figure 2 This is a schematic diagram of the open state structure of this application; Figure 3 This is a partial structural diagram of this application; Figure 4 This is a schematic diagram showing the disassembled structure of the rotating frame and the shelf in this application.

[0020] In the diagram: 1. Main body of the low-temperature stability tester; 2. Sealing cover; 3. Control panel; 4. Centrifuge chamber; 5. Centrifuge motor; 6. Rotating frame; 7. Storage slot; 8. Rubber pad; 9. Test tube; 10. Mounting slot; 11. Pin; 12. Storage rack; 13. Round hole; 14. Rubber retaining ring; 15. Fixing rod; 16. Fixing hole; 17. Retrieval slot; 18. Handle; 19. Magnet one; 20. Magnet two. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 - Figure 4 As shown, the low-temperature stability testing device for pesticide testing provided in this embodiment includes a low-temperature stability testing instrument body 1. A control panel 3 is fixedly installed on the front side of the low-temperature stability testing instrument body 1. A sealing cover 2 is rotatably connected to the top of the low-temperature stability testing instrument body 1. A centrifuge chamber 4 is opened inside the low-temperature stability testing instrument body 1. A centrifuge motor 5 is fixedly installed at the bottom of the centrifuge chamber 4. A rotating frame 6 is fixedly connected to the output end of the centrifuge motor 5. A storage slot 7 is opened inside the storage slot 7. A test tube 9 is slidably inserted into the storage slot 7. An installation groove 10 is opened on the upper surface of the rotating frame 6. A fixing rod 15 is slidably inserted into the installation groove 10. A storage rack 12 is fixedly connected to the upper end of the fixing rod 15. The upper surface of the centrifuge chamber 2 has a through hole 13 for the test tube 9 to pass through. In use, a centrifuge motor 5 is installed at the bottom of the centrifuge chamber 4, and the centrifuge motor 5 drives the rotating frame 6 to rotate. Centrifugation and stirring can be completed directly in a low-temperature environment, avoiding temperature fluctuations caused by sample transfer in the traditional process and ensuring stable test conditions. The rack 12 is installed on the rotating frame 6 through the cooperation between the mounting groove 10 and the fixing rod 15. The bottom of the test tube 9 is nested in the mounting groove 7, and the upper end of the test tube 9 is fixed through the through hole 13, forming a double limit, which effectively prevents the test tube 9 from shifting during centrifugation. After the test, all test tubes 9 can be taken out at once by taking out the rack 12, which helps to improve the efficiency of operation.

[0023] In this embodiment, as Figure 3 and 4 As shown, the outer diameter of the fixing rod 15 is adapted to the inner diameter of the mounting groove 10. The mounting groove 10 is fixedly connected with a pin 11. The bottom of the fixing rod 15 is provided with a fixing hole 16 for the pin 11 to be inserted. The upper surface of the shelf 12 is provided with a retrieval slot 17 in the center. In use, the fixing rod 15 is locked with the pin 11 in the mounting groove 10 through the fixing hole 16 at the bottom to form a rigid connection, ensuring that the shelf 12 has no risk of loosening during high-speed centrifugation and significantly improving its vibration resistance. The operator can insert their fingers into the retrieval slot 17 to retrieve the shelf 12.

[0024] In this embodiment, as Figure 3 and 4As shown, there are four mounting slots 10, four pins 11, four shelves 12, four fixing rods 15 and four fixing holes 16, and they are all arranged in a one-to-one correspondence. The four mounting slots 10 are evenly distributed in a circular array on the upper surface of the rotating frame 6. In use, the four sets of support points are arranged in a circular array to ensure that the centrifugal force can be evenly distributed when rotating at high speed.

[0025] In this embodiment, as Figure 3 and 4 As shown, a rubber pad 8 is fixedly connected to the bottom of the storage compartment 7. The top of the rubber pad 8 is in contact with the bottom of the test tube 9. During use, the rubber pad 8 cushions and protects the bottom of the test tube 9 to prevent the bottom of the test tube 9 from being bumped and broken when placed.

[0026] In this embodiment, as Figure 3 and 4 As shown, a rubber retaining ring 14 is fixedly connected to the inner wall of the circular hole 13. The inner wall of the rubber retaining ring 14 abuts against the outer wall of the test tube 9. The upper end of the test tube 9 is provided with a protruding edge that engages with the shelf 12. In use, the test tube 9 is clamped and fixed inside the circular hole 13 by setting the rubber retaining ring 14. The protruding edge at the upper end of the test tube 9 forms a rigid engagement structure with the upper surface of the shelf 12, so that when the shelf 12 moves upward, it can move the test tube 9 together, thereby removing all the test tubes 9 at once.

[0027] In this embodiment, as Figure 2 As shown, a handle 18 is fixedly connected to the front side of the sealing cover 2. A magnet 19 is embedded in the lower surface of the sealing cover 2. A magnet 20 that is attracted to the magnet 19 is embedded in the upper surface of the body 1 of the low temperature stability tester. In use, the magnetic effect between the magnet 19 and the magnet 20 is used to make the sealing cover 2 fit tightly with the body 1 of the low temperature stability tester to ensure the test sealing.

[0028] The working principle of this utility model is as follows: When using the low-temperature stability testing device for pesticide testing, open the sealing cover 2, align the fixing rod 15 with the mounting groove 10 to install the shelf 12 onto the rotating frame 6, and then insert the test tubes 9 containing the reagents to be tested into the storage groove 7 through the round hole 13. After the test tubes 9 are placed, close the sealing cover 2. Magnet 19 and magnet 20 are attracted magnetically, making the sealing cover 2 tightly fit with the main body 1 of the low-temperature stability testing instrument. Start the centrifugal motor 5 through the control panel 3, and drive the rotating frame 6 to rotate. The test tubes 9 can be centrifuged and stirred directly in a low-temperature environment. After the centrifugation is completed, subsequent testing can be carried out through the main body 1 of the low-temperature stability testing instrument. After the test is completed, open the sealing cover 2 again, and the operator can insert their fingers into the retrieval groove 17 to pick up the shelf 12, that is, all the test tubes 9 can be taken out at once by picking up the shelf 12.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0031] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A low-temperature stability testing device for pesticide testing, comprising a main body of a low-temperature stability testing instrument (1), characterized in that, The control panel (3) is fixedly installed on the front side of the main body (1) of the low temperature stability tester. A sealing cover (2) is rotatably connected to the top of the main body (1). A centrifuge chamber (4) is opened inside the main body (1). A centrifuge motor (5) is fixedly installed at the bottom of the centrifuge chamber (4). A rotating frame (6) is fixedly connected to the output end of the centrifuge motor (5). A storage slot (7) is opened inside the storage slot (7). A test tube (9) is slidably inserted into the storage slot (7). An installation slot (10) is opened on the upper surface of the rotating frame (6). A fixing rod (15) is slidably inserted into the installation slot (10). A storage rack (12) is fixedly connected to the upper end of the fixing rod (15). A circular hole (13) for the test tube (9) to pass through is opened through the upper surface of the storage rack (12).

2. The low-temperature stability testing device for pesticide detection according to claim 1, characterized in that, The outer diameter of the fixing rod (15) is adapted to the inner diameter of the mounting groove (10). The mounting groove (10) is fixedly connected with a pin (11). The bottom of the fixing rod (15) is provided with a fixing hole (16) for the pin (11) to be inserted. The upper surface of the shelf (12) is provided with a retrieval slot (17).

3. The low-temperature stability testing device for pesticide detection according to claim 2, characterized in that, The number of each of the mounting slots (10), pins (11), shelves (12), fixing rods (15) and fixing holes (16) is four and they correspond one to one. The four mounting slots (10) are evenly distributed in a circular array on the upper surface of the rotating frame (6).

4. The low-temperature stability testing device for pesticide detection according to claim 1, characterized in that, A rubber pad (8) is fixedly connected to the bottom of the storage slot (7), and the top of the rubber pad (8) is in contact with the bottom of the test tube (9).

5. The low-temperature stability testing device for pesticide detection according to claim 1, characterized in that, A rubber fixing ring (14) is fixedly connected to the inner wall of the round hole (13). The inner wall of the rubber fixing ring (14) abuts against the outer wall of the test tube (9). The upper end of the test tube (9) is provided with a protruding edge that engages with the shelf (12).

6. The low-temperature stability testing device for pesticide detection according to claim 1, characterized in that, A handle (18) is fixedly connected to the front side of the sealing cover (2). A magnet (19) is embedded in the lower surface of the sealing cover (2). A magnet (20) that is magnetically attracted to the magnet (19) is embedded in the upper surface of the body (1) of the low temperature stability tester.

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