Low-speed table type centrifugal machine convenient for fixing test tube

Abstract

The utility model relates to the technical field of skin care product production, and discloses a low-speed table centrifuge convenient for fixing a test tube, the low-speed table centrifuge comprises a shell, the bottom of the inner wall of the shell is provided with a driving mechanism, the top of the driving mechanism is connected with a centrifugal frame, and the centrifugal frame is provided with a plurality of placing holes in an annular array; and clamping claws are arranged in the multiple placing holes. According to the low-speed table type centrifugal machine convenient for fixing the test tube, a push plate is matched with a telescopic rod to downwards apply pressure to a connecting plate, so that the connecting plate drives a plurality of swing rods to swing while moving downwards, the plurality of swing rods push a plurality of push rods, and the push rods push movable claws to move towards corresponding fixed claws; and the fixed claw is matched with the movable claw to clamp and fix the test tubes in the placing holes, so that the effects that the multiple test tubes can be conveniently and simultaneously clamped and fixed, the multiple test tubes do not need to be fixed one by one, the fixing speed of the multiple test tubes is increased, and the overall working efficiency of the centrifugal machine is improved are achieved.

Description

A low-speed benchtop centrifuge for easy fixation of test tubes Technical Field

[0001] This application relates to the field of skin care product manufacturing technology, specifically a low-speed benchtop centrifuge that facilitates the fixation of test tubes. Background Technology

[0002] In the production of skincare products, the precise separation and purification of raw materials is a crucial step. Traditional separation techniques often fall short of meeting the requirements of efficiency and precision, while centrifugation, as a separation method based on material density and particle size, is widely used in various fields due to its high efficiency and speed. Low-speed benchtop centrifuges, as an application of centrifugation technology, are gradually gaining a foothold in skincare product production due to their advantages such as small size, ease of operation, and low cost.

[0003] Existing benchtop centrifuges are inconvenient to clamp and fix multiple test tubes at the same time. They need to be fixed one by one after the test tubes are placed, which affects the fixation of the test tubes and the overall working efficiency of the centrifuge. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this application provides a low-speed benchtop centrifuge that facilitates the fixation of test tubes. It offers advantages such as the ability to easily clamp and fix multiple test tubes simultaneously without the need for individual fixation, thus accelerating the fixation process and improving the overall efficiency of the centrifuge. This solves the problem that existing benchtop centrifuges are inconvenient for simultaneously clamping and fixing multiple test tubes, requiring individual fixation after placement, which negatively impacts both test tube fixation and the overall efficiency of the centrifuge.

[0005] To achieve the goal of conveniently clamping and fixing multiple test tubes simultaneously without fixing them one by one, thus speeding up the fixing process and improving the overall efficiency of the centrifuge, this application provides the following technical solution: A low-speed benchtop centrifuge for easy fixing of test tubes, comprising a shell, a drive mechanism at the bottom of the inner wall of the shell, a centrifuge rack connected to the top of the drive mechanism, multiple placement holes arranged in a circular array on the centrifuge rack, and clamping claws inside each of the placement holes, the clamping claws including fixed claws and movable claws, the fixed claws being disposed on the wall of the placement holes, the movable claws being located on one side of the fixed claws, one side of the movable claw being disposed at one end of a push rod, the other end of the push rod being hinged to one end of a swing rod via a hinge frame, the other ends of multiple swing rods corresponding to the clamping claws being hinged in a circular array to the outer surface of the middle part of a connecting plate via a hinge frame, a telescopic rod being disposed at the top of the connecting plate, and a push plate being disposed at the top of the telescopic rod.

[0006] The above solution uses a push plate and telescopic rod to apply downward pressure to the connecting plate. As the connecting plate moves downward, it drives multiple swing rods to swing, which in turn pushes multiple push rods. These push rods then move the moving claws towards their corresponding fixed claws, allowing the fixed claws to clamp and fix the test tubes in the placement holes. This method allows for convenient simultaneous clamping and fixing of multiple test tubes without the need to fix them individually, thus speeding up the process and improving the overall efficiency of the centrifuge.

[0007] Furthermore, the outer surface of the middle part of the push rod is slidably disposed within the inner wall of the middle part of the positioning frame, and the bottom of the positioning frame is disposed on the top of the centrifuge frame by a fixing block.

[0008] The above solution allows the push rod's movement trajectory to be fixed by sliding its outer surface in the middle of the positioning frame within the inner wall, thus improving the stability of the push rod when it drives the moving pawl.

[0009] Furthermore, a first spring is provided at the bottom of the connecting plate, and the end of the first spring away from the connecting plate is located at the top of the centrifuge rack.

[0010] With the above scheme, the first spring can apply an upward thrust to the centrifuge rack. After the test tube is released from its fixation, the centrifuge rack can be pushed upward to reset, thereby causing the moving claw to gradually move away from the fixed claw to reset.

[0011] Furthermore, a limiting rod is provided at the top of the centrifuge rack, and the outer surface of the middle part of the limiting rod is inserted into the inner wall of the connecting plate.

[0012] The above solution allows the inner wall of the connecting plate to slide on the outer surface of the middle part of the limiting rod, thereby fixing the angle of the connecting plate during movement, improving the stability of the connecting plate during movement, and enabling the connecting plate to smoothly drive multiple swing rods to swing at the same amplitude simultaneously.

[0013] Furthermore, a second spring is provided inside the telescopic rod, with one end of the second spring located at one end of the inner wall of the telescopic outer tube and the other end of the second spring located at one end of the telescopic inner rod.

[0014] With the above scheme, the second spring can work with the telescopic rod and push plate to apply a downward pushing force to the connecting plate. The pushing force of the second spring can cause the connecting plate to drive the moving claw to apply appropriate pressure to the test tube in the placement hole. This avoids that if the pressure on the connecting plate is too high, the moving claw and the fixed claw will crush the test tube, and if the pressure is too low, the test tube cannot be stably clamped and fixed.

[0015] Furthermore, a positioning post is provided on the top of the push plate, and the positioning post is inserted into the inner wall of the middle part of the limiting plate. The two ends of the limiting plate are slidably connected to the inner walls of the middle part of the two limiting frames. Both limiting frames are set on the top of the centrifuge frame through a support frame, and the two limiting frames are symmetrically arranged.

[0016] The above scheme allows the positioning pin to fix the position of the limiting plate at the top of the push plate and the trajectory of the limiting plate's rotation. By rotating the limiting plate into the limiting frame, the position of the limiting plate can be fixed, and then the position of the connecting plate can be fixed by the telescopic rod in conjunction with the second spring.

[0017] Furthermore, the limiting plate is located below the positioning ring, the positioning ring is disposed on the outer surface of one end of the positioning post, and the bottom of the positioning ring is slidably connected to the top of the limiting plate.

[0018] The above scheme allows the positioning ring to fix the limiting plate and the positioning post, improving the stability of the limiting plate on the outer surface of the middle part of the positioning post.

[0019] Furthermore, a handle is provided on the top of the limiting plate.

[0020] The above solution allows for convenient driving of the limit plate via the handle, which in turn facilitates driving of the push plate.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This low-speed benchtop centrifuge, designed for easy fixation of test tubes, utilizes a push plate and telescopic rod to apply downward pressure to a connecting plate. As the connecting plate moves downward, it simultaneously drives multiple swing rods to oscillate, which in turn push multiple push rods. These push rods then move the moving claws towards their corresponding fixed claws, allowing the fixed claws to engage with the moving claws to clamp and fix the test tubes within the placement holes. This design enables convenient simultaneous clamping and fixation of multiple test tubes, eliminating the need for individual fixation and significantly increasing the overall efficiency of the centrifuge. Attached Figure Description

[0023] Figure 1 is a three-dimensional structural diagram of this application;

[0024] Figure 2 is a front cross-sectional view of the casing of this application;

[0025] Figure 3 is a top view of the structure of this application;

[0026] Figure 4 is a schematic diagram of the internal structure of the outer shell of this application;

[0027] Figure 5 is a schematic diagram of the connection structure between the telescopic rod and the second spring in this application.

[0028] In the picture:

[0029] 1. Outer shell; 2. Drive mechanism; 3. Centrifuge rack; 4. Placement hole; 5. Clamping claw; 501. Fixed claw; 502. Moving claw; 6. Push rod; 7. Swing rod; 8. Connecting plate; 9. Telescopic rod; 10. Push plate; 11. Positioning frame; 12. Limiting rod; 13. First spring; 14. Second spring; 15. Positioning post; 16. Limiting plate; 17. Limiting frame; 18. Positioning ring; 19. Handle. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please refer to Figures 2, 3, and 4. In this embodiment, a low-speed benchtop centrifuge for easy fixation of test tubes includes a housing 1. A drive mechanism 2 is provided at the bottom of the inner wall of the housing 1. A centrifuge rack 3 is connected to the top of the drive mechanism 2. Multiple placement holes 4 are arranged in a circular array on the centrifuge rack 3. Clamping claws 5 are provided inside the multiple placement holes 4. The clamping claws 5 include fixed claws 501 and movable claws 502. The fixed claws 501 are provided on the hole wall of the placement holes 4. The movable claws 502 are located on one side of the fixed claws 501. One side of the movable claws 502 is provided at one end of a push rod 6. The other end of the push rod 6 is hinged to one end of a swing rod 7 through a hinge frame. The other ends of the multiple swing rods 7 corresponding to the clamping claws 5 are hinged in a circular array to the outer surface of the middle part of a connecting plate 8 through a hinge frame. A telescopic rod 9 is provided at the top of the connecting plate 8. A push plate 10 is provided at the top of the telescopic rod 9.

[0032] Please refer to Figures 2, 3 and 4. The outer surface of the middle part of the push rod 6 is slidably disposed within the inner wall of the middle part of the positioning frame 11. The bottom of the positioning frame 11 is disposed on the top of the centrifuge frame 3 by means of a fixing block. The movement trajectory of the push rod 6 can be fixed by the sliding of the outer surface of the middle part of the push rod 6 within the inner wall of the middle part of the positioning frame 11, thereby improving the stability of the push rod 6 when it drives the moving claw 502 to move.

[0033] Please refer to Figures 2, 4 and 5. A first spring 13 is provided at the bottom of the connecting plate 8. The end of the first spring 13 away from the connecting plate 8 is provided at the top of the centrifuge rack 3. The first spring 13 can apply an upward thrust to the centrifuge rack 3. After the test tube is released from the fixation, the centrifuge rack 3 can be pushed upward to reset, thereby driving the moving claw 502 to gradually move away from the fixed claw 501 to reset.

[0034] Please refer to Figures 2, 3 and 4. A limiting rod 12 is provided at the top of the centrifuge frame 3. The outer surface of the middle part of the limiting rod 12 is inserted into the inner wall of the connecting plate 8. The angle of the connecting plate 8 when it moves can be fixed by sliding the inner wall of the connecting plate 8 on the outer surface of the middle part of the limiting rod 12, thereby improving the stability of the connecting plate 8 when it moves and enabling the connecting plate 8 to smoothly drive multiple swing rods 7 to swing at the same amplitude at the same time.

[0035] Please refer to Figure 5. The telescopic rod 9 is equipped with a second spring 14 inside. One end of the second spring 14 is set at one end of the inner wall of the telescopic outer tube of the telescopic rod 9, and the other end of the second spring 14 is set at one end of the telescopic inner rod of the telescopic rod 9. The second spring 14 can work with the telescopic rod 9 and the push plate 10 to apply a downward pushing force to the connecting plate 8. The pushing force of the second spring 14 can cause the connecting plate 8 to drive the moving claw 502 to apply appropriate pressure to the test tube in the placement hole 4. This avoids that if the pressure on the connecting plate 8 is too large, the moving claw 502 will work with the fixed claw 501 to crush the test tube, and if the pressure is too small, the test tube cannot be stably clamped and fixed.

[0036] Please refer to Figures 3, 4 and 5. The top of the push plate 10 is provided with a positioning post 15, which is inserted into the inner wall of the middle part of the limiting plate 16. The two ends of the limiting plate 16 are slidably connected to the inner walls of the middle parts of the two limiting frames 17. Both limiting frames 17 are set on the top of the centrifuge frame 3 through the support frame. The two limiting frames 17 are symmetrically arranged. The positioning post 15 can fix the position of the limiting plate 16 on the top of the push plate 10 and fix the rotation trajectory of the limiting plate 16. The position of the limiting plate 16 can be fixed by rotating the limiting plate 16 into the limiting frame 17. Then, the position of the connecting plate 8 can be fixed by the telescopic rod 9 in conjunction with the second spring 14.

[0037] Please refer to Figures 3, 4 and 5. The limiting plate 16 is located below the positioning ring 18. The positioning ring 18 is disposed on the outer surface of one end of the positioning post 15. The bottom of the positioning ring 18 is slidably connected to the top of the limiting plate 16. The positioning ring 18 can fix the limiting plate 16 and the positioning post 15, thereby improving the stability of the limiting plate 16 on the outer surface of the middle part of the positioning post 15.

[0038] Please refer to Figures 3, 4 and 5. A handle 19 is provided on the top of the limiting plate 16. The handle 19 can be used to drive the limiting plate 16, and in turn, the push plate 10 can be driven conveniently by driving the limiting plate 16.

[0039] This embodiment of a low-speed benchtop centrifuge for easy fixation of test tubes utilizes a push plate 10 and a telescopic rod 9 to apply downward pressure to a connecting plate 8. As the connecting plate 8 moves downward, it drives multiple swing rods 7 to swing, which in turn pushes multiple push rods 6. These push rods 6 then move the moving claw 502 towards the corresponding fixed claw 501. The fixed claw 501, in conjunction with the moving claw 502, clamps and fixes the test tubes within the placement hole 4. This allows for convenient simultaneous clamping and fixing of multiple test tubes, eliminating the need for individual fixation and accelerating the process, thereby improving the overall efficiency of the centrifuge.

[0040] It should be noted that the elastic force of the first spring 13 is less than that of the second spring 14. This allows the push plate 10 to be pushed downward first by the cooperation of the telescopic rod 9 and the second spring 14, which in turn pushes the connecting plate 8 downward to compress the first spring 13 and cause it to contract. Only after the moving pawl 502 has moved into place will the downward movement of the push plate 10 push the second spring 14 to contract through the telescopic rod 9.

[0041] The working principle of the above embodiment is as follows: Place the test tube containing the item to be centrifuged onto the fixed claw 501 in the placement hole 4. After placement, hold the handle 19 and push the limiting plate 16 downwards, causing the push plate 10 to move downwards. The push plate 10, through the telescopic rod 9 and the second spring 14, pushes the connecting plate 8 downwards, causing the connecting plate 8 to push the first spring 13 to retract. When the connecting plate 8 moves downwards, it drives multiple swing rods 7 to swing with the same amplitude, which in turn drives multiple push rods 6 to move with the same amplitude, causing the moving claw 502 to move towards the fixed claw 501 until the moving claw 502 adheres to the outer surface of the test tube on the fixed claw 501. The moving claw 502, in conjunction with the fixed claw 501, clamps the test tube, continuously pushing the push plate 10 downwards, causing the telescopic rod 9 to retract, and the second spring 14 to retract. 4. Compress and shrink until the limiting plate 16 descends to a height that matches the inner wall of the limiting frame 17. Drive the limiting plate 16 to rotate on the positioning post 15 by the handle 19, so that both ends of the limiting plate 16 rotate into the two limiting frames 17, so that the limiting frames 17 fix the position of the limiting plate 16. Then, fix the position of the connecting plate 8 by the push plate 10. Close the top cover of the outer shell 1, so that the drive mechanism 2 drives the centrifuge rack 3 to rotate, so that the centrifuge can work. After centrifugation, open the top cover of the outer shell 1, drive the limiting plate 16 to rotate by the handle 19, so that the limiting plate 16 is released from the limitation of the limiting frame 17, release the pressure on the push plate 10, the first spring 13 returns to its original position, pushes the connecting plate 8 to move upward and return to its original position, so that the moving claw 502 and the fixed claw 501 release the clamping and fixing of the test tube.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-speed benchtop centrifuge for easy fixation of test tubes, comprising a casing (1), characterized in that: A drive mechanism (2) is provided at the bottom of the inner wall of the outer shell (1). A centrifuge frame (3) is connected to the top of the drive mechanism (2). Multiple placement holes (4) are arranged in a ring array on the centrifuge frame (3). A clamping claw (5) is provided inside each of the multiple placement holes (4). The clamping claw (5) includes a fixed claw (501) and a movable claw (502). The fixed claw (501) is located on the hole wall of the placement hole (4). The movable claw (502) is located on one side of the fixed claw (501). One side of the movable claw (502) is located at one end of the push rod (6). The other end of the push rod (6) is hinged to one end of the swing rod (7) through a hinge frame. The other ends of the multiple swing rods (7) corresponding to the clamping claw (5) are hinged in a ring array to the middle outer surface of the connecting plate (8) through the hinge frame. A telescopic rod (9) is provided at the top of the connecting plate (8). A push plate (10) is provided at the top of the telescopic rod (9).

2. The low-speed benchtop centrifuge for easy fixation of test tubes according to claim 1, characterized in that: The outer surface of the middle part of the push rod (6) is slidably disposed within the inner wall of the middle part of the positioning frame (11), and the bottom of the positioning frame (11) is disposed on the top of the centrifuge frame (3) by a fixing block.

3. A low-speed benchtop centrifuge for easy fixation of test tubes according to claim 1, characterized in that: The bottom of the connecting plate (8) is provided with a first spring (13), and the end of the first spring (13) away from the connecting plate (8) is provided at the top of the centrifuge frame (3).

4. A low-speed benchtop centrifuge for easy fixation of test tubes according to claim 1, characterized in that: The centrifuge rack (3) is provided with a limiting rod (12) at the top, and the outer surface of the middle part of the limiting rod (12) is inserted into the inner wall of the connecting plate (8).

5. A low-speed benchtop centrifuge for easy fixation of test tubes according to claim 1, characterized in that: The telescopic rod (9) is provided with a second spring (14) inside. One end of the second spring (14) is located on one end of the inner wall of the telescopic outer tube of the telescopic rod (9), and the other end of the second spring (14) is located on one end of the telescopic inner rod of the telescopic rod (9).

6. A low-speed benchtop centrifuge for easy fixation of test tubes according to claim 1, characterized in that: The push plate (10) is provided with a positioning post (15) at the top. The positioning post (15) is inserted into the inner wall of the middle part of the limiting plate (16). The two ends of the limiting plate (16) are slidably connected to the inner wall of the middle part of the two limiting frames (17). The two limiting frames (17) are both set on the top of the centrifuge frame (3) through the support frame. The two limiting frames (17) are symmetrically arranged.

7. A low-speed benchtop centrifuge for easy fixation of test tubes according to claim 6, characterized in that: The limiting plate (16) is located below the positioning ring (18), the positioning ring (18) is disposed on the outer surface of one end of the positioning post (15), and the bottom of the positioning ring (18) is slidably connected to the top of the limiting plate (16).

8. A low-speed benchtop centrifuge for easy fixation of test tubes according to claim 7, characterized in that: The top of the limiting plate (16) is provided with a handle (19).

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