Centrifugal device for biological reagent

Abstract

The utility model discloses a centrifugal device for a biological reagent, which comprises a base plate, a fixing rod is arranged at the upper end of the base plate, a gear ring is arranged at the upper end of the fixing rod, a planetary centrifugal device is arranged in the center of the base plate, a connecting cylinder is arranged on the planetary centrifugal device, a biological reagent tube is arranged in the connecting cylinder, and the biological reagent tube is arranged in the connecting cylinder. And a sealing cover mechanism is arranged at the upper end of the connecting cylinder. The utility model belongs to the technical field of biological reagent centrifugation, and particularly relates to a centrifugal device for biological reagents, which solves the problems that in the prior art, a biological reagent tube cannot rotate when being centrifugally layered, so that the layering effect is poor, and the biological reagent tube cannot be quickly fixed when being fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of biological reagent centrifugation, and specifically refers to a centrifugation device for biological reagents. Background Art

[0002] A centrifuge separates materials by rotating them at high speed, causing the materials to stratify according to different densities. The denser liquid sinks to the bottom layer, and the less dense liquid floats on the upper layer, thus obtaining the required pure substance. Centrifugal sampling is an essential process in the preparation of biological reagents.

[0003] In the prior art, when centrifugally stratifying a biological reagent tube, the test tube is generally fixed, and centrifugal stratification is achieved by rotating the reagent tube at high speed. However, in practical applications, there are deficiencies: the test tube cannot rotate by itself, resulting in an unsatisfactory stratification effect. When the test tube is fixed, it cannot be fixed quickly, so improvements are needed. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that when centrifugally stratifying a biological reagent tube in the prior art, the tube cannot rotate by itself, resulting in a poor stratification effect, and when fixing the biological reagent tube, it cannot be fixed quickly.

[0005] To achieve the above functions, the technical solution adopted by the utility model is as follows: A centrifugation device for biological reagents includes a chassis. A fixing rod is provided at the upper end of the chassis, and a toothed ring is provided at the upper end of the fixing rod. A planetary centrifugation device is provided at the center of the chassis. A connecting cylinder is provided on the planetary centrifugation device, and a biological reagent tube is provided inside the connecting cylinder. A cover mechanism is provided at the upper end of the connecting cylinder. The planetary centrifugation device includes a motor fixed to the center of the chassis. A rotating shaft is provided at the output end of the motor, and a connecting plate is fixedly connected to the upper end of the rotating shaft. A connecting shaft is rotatably provided in the connecting plate. A gear is provided at the lower end of the connecting shaft and meshes with the toothed ring inside. The upper end of the connecting shaft is fixedly connected to the connecting cylinder. By driving the connecting plate to rotate through the rotating shaft, the biological reagent tube performs centrifugal motion. At the same time, the gear meshes with the toothed ring to realize the self-rotation of the connecting cylinder, so that the biological reagent tube can also rotate by itself, ensuring the centrifugal stratification effect of the biological reagent tube.

[0006] Further, the cover mechanism includes a cover plate threadedly connected to the connecting cylinder. A connecting device is provided at the center of the inner wall of the cover plate, and a pressing plate is provided on the connecting device. The biological reagent tube placed inside the connecting cylinder can be pressed and fixed by the pressing plate to prevent it from swaying during centrifugal motion.

[0007] Further, the connecting device includes a fixed cylinder fixedly connected to the center of the top wall of the cover plate. A telescopic column is inserted through the fixed cylinder. One end of the telescopic column faces the top pressing plate, and an end plate is provided at the other end. A spring is fixedly connected to the end plate, and the other end of the spring is fixedly connected to the inside of the fixed cylinder. Through the connecting device, the top pressing plate can be elastically pressed against the biological reagent tube for fixation.

[0008] Preferably, a support rod is fixedly connected to the chassis, and the other end of the support rod is fixedly connected to a ring sleeve. The ring sleeve is sleeved on the rotating shaft and is coaxial with the rotating shaft. The ring sleeve can ensure the stable rotation of the rotating shaft.

[0009] Preferably, an inner sleeve is provided at the bottom end inside the connecting cylinder. The biological reagent tube is inserted into the inner sleeve, and the inner sleeve is made of silica gel material.

[0010] Preferably, a plurality of groups of connecting cylinders are arranged in a circumferential array around the rotating shaft, and multiple groups of biological reagent tubes can be centrifugally stratified at one time.

[0011] The beneficial effects of the present utility model adopting the above structure are as follows:

[0012] 1. By setting the planetary centrifugal device, the present utility model can realize the centrifugal motion of the biological reagent tube and at the same time ensure the self-rotation motion of the biological reagent tube, thereby ensuring the centrifugal stratification effect of the biological reagent in the biological reagent tube.

[0013] 2. By setting the capping mechanism, the present utility model can quickly fix and cap the biological reagent, ensuring stability during centrifugation. Description of the Drawings

[0014] Figure 1 is the overall three-dimensional view of a centrifugal device for biological reagents of the present utility model;

[0015] Figure 2 is the three-dimensional view of the capping mechanism of a centrifugal device for biological reagents of the present utility model;

[0016] Figure 3 is Figure 2 the internal structure diagram of the connecting device in

[0017] Among them, 1. Chassis, 2. Fixed rod, 3. Gear ring, 4. Planetary centrifugal device, 5. Connecting cylinder, 6. Biological reagent tube, 7. Capping mechanism, 8. Motor, 9. Rotating shaft, 10. Connecting plate, 11. Coupling shaft, 12. Gear, 13. Cover plate, 14. Connecting device, 15. Top pressing plate, 16. Fixed cylinder, 17. Telescopic column, 18. End plate, 19. Spring, 20. Support rod, 21. Ring sleeve, 22. Inner sleeve. Detailed Embodiment

[0018] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work belong to the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0020] As Figures 1 - 3 , a centrifugal device for biological reagents of the present utility model includes a chassis 1. A fixing rod 2 is provided at the upper end of the chassis 1. A toothed ring 3 is provided at the upper end of the fixing rod 2. A planetary centrifugal device is provided at the center of the chassis 1. A connecting cylinder 5 is provided on the planetary centrifugal device. A plurality of groups of connecting cylinders 5 are arranged in a circumferential array around a rotating shaft 9. Multiple groups of biological reagent tubes 6 can be centrifugally stratified at one time. A biological reagent tube 6 is provided in the connecting cylinder 5. An inner sleeve 22 is provided at the inner bottom end of the connecting cylinder 5. The biological reagent tube 6 is inserted on the inner sleeve 22. The inner sleeve 22 is made of silica gel material. A cover mechanism 7 is provided at the upper end of the connecting cylinder 5;

[0021] As Figure 1 , the planetary centrifugal device 4 includes a motor 8. The motor 8 is fixedly connected to the center of the chassis 1. A rotating shaft 9 is provided at the output end of the motor 8. A support rod 20 is fixedly connected to the chassis 1. The other end of the support rod 20 is fixedly connected to a ring sleeve 21. The ring sleeve 21 is sleeved on the rotating shaft 9 and is coaxial with the rotating shaft 9. The ring sleeve 21 can ensure the stable rotation of the rotating shaft 9. A connecting plate 10 is fixedly connected to the upper end of the rotating shaft 9. A connecting shaft 11 is rotatably provided in the connecting plate 10. A gear 12 is provided at the lower end of the connecting shaft 11 and is meshed with the toothed ring 3 inside. The upper end of the connecting shaft 11 is fixedly connected to the connecting cylinder 5. By driving the connecting plate 10 to rotate through the rotating shaft 9, the biological reagent tube 6 makes a centrifugal motion. At the same time, the gear 12 meshes with the toothed ring 3 to realize the self-rotation of the connecting cylinder 5. Thus, the biological reagent tube 6 can also rotate self, ensuring the centrifugal stratification effect of the biological reagent tube 6.

[0022] As Figures 1 - 3 , the cover mechanism 7 includes a cover plate 13. The cover plate 13 is threadedly connected to the connecting cylinder 5. A connecting device 14 is provided at the center of the inner wall of the cover plate 13. A top pressing plate 15 is provided on the connecting device 14. The biological reagent tube 6 placed in the connecting cylinder 5 can be pressed and fixed through the top pressing plate 15 to avoid sloshing during centrifugal motion.

[0023] As shown in Figures 2 - 3 , the connecting device 14 includes a fixed cylinder 16 which is fixedly connected to the center of the top wall of the cover plate 13. A telescopic column 17 is inserted into the fixed cylinder 16. One end of the telescopic column 17 faces the top pressing plate 15 and the other end is provided with an end plate 18. A spring 19 is fixedly connected to the end plate 18, and the other end of the spring 19 is fixedly connected to the inside of the fixed cylinder 16. Through the connecting device 14, the top pressing plate 15 can elastically press on the biological reagent tube 6 for fixation.

[0024] During specific use, place the biological reagent in the biological reagent tube 6, then insert the biological reagent tube 6 into the inner sleeve 22 inside the connecting cylinder 5, and screw the cover plate 13 into the connecting cylinder 5. The top pressing plate 15 will press on the biological reagent tube 6 firmly under the action of the spring 19.

[0025] By starting the motor 8, the rotating shaft 9 will rotate in the ring sleeve 21. The connecting plate 10 drives the connecting cylinder 5 to rotate centrifugally around the rotating shaft 9. At the same time, the gear 12 will roll while meshing with the toothed ring 3, and the coupling shaft 11 will drive the connecting cylinder 5 to rotate self - sufficiently. Thus, the biological reagent tube 6 can rotate. In this way, under the condition of rotation, centrifugal motion is performed on the biological reagent tube 6, and the centrifugal stratification effect is better.

[0026] The above describes the present utility model and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the creative purpose of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. A centrifugal device for biological reagents, comprising a chassis, characterized in that: A fixing rod is provided at the upper end of the chassis, a gear ring is provided at the upper end of the fixing rod, a planetary centrifuge is provided at the center of the chassis, a connecting cylinder is provided on the planetary centrifuge, a biological reagent tube is provided in the connecting cylinder, and a capping mechanism is provided at the upper end of the connecting cylinder.

2. A centrifugal device for biological reagents according to claim 1, characterized in that: The planetary centrifugal device includes a motor, which is fixed to the center of the chassis. A rotating shaft is provided at the output end of the motor. A connecting plate is fixed to the upper end of the rotating shaft. A connecting shaft is rotatably provided in the connecting plate. A gear is provided at the lower end of the connecting shaft and is meshed with the gear ring. The upper end of the connecting shaft is fixedly connected to a connecting cylinder.

3. A centrifugal device for biological reagents according to claim 2, characterized in that: The capping mechanism comprises a cover plate, which is threadedly connected to the connecting tube. A connecting device is provided at the center of the inner wall of the cover plate, and a top pressure plate is provided on the connecting device.

4. A centrifugal device for biological reagents according to claim 3, characterized in that: The connecting device includes a fixed tube, which is fixed to the center of the top wall of the cover plate. A telescopic column is inserted in the fixed tube. One end of the telescopic column faces the top pressure plate and the other end is provided with an end plate. A spring is fixed to the end plate, and the other end of the spring is fixed to the inside of the fixed tube.

5. A centrifugal device for biological reagents according to claim 4, characterized in that: A support rod is fixedly connected to the chassis, a ring sleeve is fixedly connected to the other end of the support rod, and the ring sleeve is sleeved on the rotating shaft and is coaxial with the rotating shaft.

6. A centrifugal device for biological reagents according to claim 5, characterized in that: An inner sleeve is provided at the inner bottom end of the connecting tube, and the biological reagent tube is plugged into the inner sleeve, and the inner sleeve is made of silica gel.

7. A centrifugal device for biological reagents according to claim 6, characterized in that: The connecting cylinders are arranged in a plurality of groups in a circular array around the rotating shaft.

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