A centrifuge for cell culture

Abstract

The application relates to the technical field of centrifuges, and discloses a centrifuge for cell culture, which comprises a machine body, a sealing cover movably connected to the back of one side of the top of the machine body, a sealing ring fixedly connected to the front of the sealing cover, a dustproof cover movably connected to the back of the other side of the top of the machine body, an operation interface fixedly connected to the front of the machine body, a fixed base fixedly sleeved with one side of the bottom of the inside of the machine body, a rotor movably sleeved with the top of the fixed base, solution test tubes movably sleeved with the periphery of the top of the rotor, a stationary base fixedly sleeved with the other side of the bottom of the inside of the machine body, a fixed rod fixedly sleeved with the front of the inside of the machine body, and a clamping device movably connected to the back of the fixed rod; the rotor is clamped and fixed through the fixed base, the state of air pressure is controlled to realize the fixation and relaxation of the rotor, and the rotor is more convenient to replace.

Description

Technical Field

[0001] This invention relates to the field of centrifuge technology, and more specifically to a centrifuge for cell culture. Background Technology

[0002] In the diagnostic lab, sample tubes with separating gel are frequently centrifuged. Using the principle of centrifugal sedimentation, cells of different densities in the solution are separated, concentrated, or purified under centrifugal force. Cells are collected by centrifugation, and the cells are screened and the medium is changed to allow the cells to grow fully and facilitate further observation by researchers.

[0003] Existing centrifuges used for cell culture have some problems in practical use, as follows:

[0004] Firstly, after the solution test tube is placed on the rotor, the rotor rotates rapidly inside the machine through the drive of electrical energy, thereby generating centrifugal force to separate the cells in the solution according to their different densities. The rotor in the existing centrifuge is fixed by bolts. When replacing the rotor, the bolts need to be unscrewed and then the rotor needs to be removed. After the replacement is completed, the bolts need to be tightened again, which is a rather cumbersome replacement process.

[0005] Secondly, existing centrifuges used for cell culture contain only one rotor. After the solution tubes are separated by centrifugation, all solution tubes need to be removed from the rotor before the next cell separation can be carried out, which requires a long waiting time.

[0006] Thirdly, the process of removing the cells from the solution tube after separation causes shaking of the separated solution, affecting the layering of the solution and thus the effectiveness of cell separation. Summary of the Invention

[0007] In order to overcome the above-mentioned defects of the prior art, the present invention provides a centrifuge for cell culture to solve the problems existing in the background art.

[0008] The present invention provides the following technical solution: a centrifuge for cell culture, comprising a body, a sealing cover movably connected to the back of one side of the top of the body, a sealing ring fixedly connected to the center of the front of the sealing cover, a dust cover movably connected to the back of the other side of the top of the body, an operating interface fixedly connected to the center of the front of the body, a fixed base fixedly sleeved on one side of the bottom inside the body, a rotor movably sleeved on the top of the fixed base, solution tubes movably sleeved around the top of the rotor, a settling base fixedly sleeved on the other side of the bottom inside the body, a fixing rod fixedly sleeved to the center of the front inside the body, and a clamping device movably connected to the back of the fixing rod.

[0009] Furthermore, the fixed base includes a fixed block, the bottom of which is fixedly connected to an organism, and the bottom of the front side of the fixed block is fixedly connected to an air supply pipe. The front side of the air supply pipe is fixedly fitted with the organism. A pressure block is movably fitted inside the bottom of the fixed block. A connecting shaft is fixedly connected to the top of the pressure block. A moving shaft is fixedly connected to the top of the connecting shaft. A rotating block is movably fitted to the lower half of the moving shaft. Clamping blocks are movably fitted around the top of the rotating block. A spring is fixedly connected to one side of each clamping block. A fixed plate is fixedly connected to one side of each spring. A rotating block is fixedly connected to the other side of each fixed plate. A top plate is fixedly connected to the top of the rotating block.

[0010] Furthermore, the clamping device includes a movable block, a fixed rod is movably connected to the front of the movable block, a sliding block is fixedly connected to the back of the movable block, a connecting block is movably connected to the bottom of the back of the sliding block, a connecting rod is fixedly connected to the back of the connecting block, and clamping claws are movably connected to both sides of the back of the connecting rod.

[0011] Furthermore, both the sealing cap and the dust cover are made of transparent tempered glass.

[0012] Furthermore, the four clamping blocks are evenly distributed around the moving axis, and the four clamping blocks are in contact with the upper half of the moving axis. The length of the slot on the top plate is the same as the distance the clamping blocks move.

[0013] Furthermore, a groove is provided in the middle of the bottom of the rotor. The size of the groove is the same as the range formed by the outer perimeter of the four clamping blocks after they expand outward. The diameter of the cylinder at the top of the stationary base is one centimeter smaller than the diameter of the groove at the bottom of the rotor. The top of the stationary base and the top of the clamping blocks are located on the same plane.

[0014] Furthermore, the weight of the rotating block is 1.5 times greater than the upward force exerted by the pressure block.

[0015] Furthermore, the clamping device does not contact the solution test tube, the moving block is located in the middle of the rotor when stationary, the connecting block is located at the bottom of the sliding block when the clamping device is stationary, and the bottom of the clamping claw is on the same plane as the bottom of the rotor.

[0016] Furthermore, the length of the sliding block is one centimeter longer than the height of the clamping block that extends above the top plate.

[0017] Furthermore, the fixing rod always remains straight, and the two clamping claws are in close contact with the rotor when clamping.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. This invention clamps and fixes the rotor using a fixed base, and controls the air pressure to fix and loosen the rotor, making rotor replacement more convenient.

[0020] 2. This invention adds a settling base inside the centrifuge. After the solution tubes are separated, the rotor is moved to the settling base by a clamping device. The movement is stable, ensuring that the layering in the solution tubes is not disordered, thereby ensuring the accuracy of cell separation and detection.

[0021] 3. The clamping device of the present invention cooperates with the fixed base. When the rotor is clamped, it is released from the fixed base, thereby smoothly moving the rotor. After the rotor moves, it can continue the next cell separation on the fixed base. The separated rotor and the stationary rotor do not affect each other, thus improving the efficiency of the work. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 This is a front cross-sectional view of the present invention.

[0024] Figure 3 This is a schematic diagram of the rotor structure of the present invention.

[0025] Figure 4 This is a schematic cross-sectional view of the fixed base structure of the present invention.

[0026] Figure 5 This is a schematic diagram of the fixed base expansion structure of the present invention.

[0027] Figure 6 This is a schematic diagram of the rotor moving structure of the present invention.

[0028] Figure 7 This is a schematic diagram of the clamping device for clamping the rotor according to the present invention.

[0029] Figure 8 This is a schematic diagram of the initial structure of the clamping device of the present invention.

[0030] The attached diagram is labeled as follows: 1. Machine body; 2. Operating interface; 3. Sealing cover; 4. Sealing ring; 5. Dust cover; 6. Static base; 7. Rotor; 8. Solution test tube; 9. Fixing rod; 10. Clamping device; 1001. Moving block; 1002. Sliding block; 1003. Connecting block; 1004. Connecting rod; 1005. Clamping claw; 11. Fixed base; 1101. Fixing block; 1102. Gas pipe; 1103. Rotating block; 1104. Fixing plate; 1105. Moving shaft; 1106. Clamping block; 1107. Spring; 1108. Connecting shaft; 1109. Pressure block; 1110. Top plate. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the morphology of each structure described in the following embodiments is merely illustrative. The centrifuge for cell culture involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Reference Figure 1-8This invention provides a centrifuge for cell culture, comprising a body 1, a sealing cover 3 movably connected to the back of one side of the top of the body 1, a sealing ring 4 fixedly connected to the center of the front of the sealing cover 3, a dust cover 5 movably connected to the back of the other side of the top of the body 1, an operating interface 2 fixedly connected to the center of the front of the body 1, a fixed base 11 fixedly sleeved on one side of the bottom inside the body 1, a rotor 7 movably sleeved on the top of the fixed base 11, solution tubes 8 movably sleeved around the top of the rotor 7, a settling base 6 fixedly sleeved on the other side of the bottom inside the body 1, and a fixing rod 9 fixedly sleeved to the center of the front inside the body 1, the back of the fixing rod 9 being movable. With the clamping device 10 connected, centrifuges have been widely used in biological sciences, especially in the fields of biochemistry and molecular biology research. Every biochemistry and molecular biology laboratory needs to prepare various types of centrifuges. Centrifugation technology is mainly used for the separation and preparation of various biological samples. When a biological sample suspension is placed in a centrifuge tube and rotates at high speed, the huge centrifugal force causes suspended microparticles such as organelles and biological macromolecules to settle at a certain speed, thus separating them from the solution. If the density of the solution is higher than that of the solvent, the particles will sink to the bottom of the tube; if the density of the solution is lower than that of the solvent, the particles will float to the top. The greater the density difference between solvents, the faster the particles move. If the densities remain constant, the particles remain stable in the solution. In cases where it is necessary to separate particles from solutions with small or no density differences, centrifuges use centrifugal force to separate the particles, rather than relying on gravity. Centrifuges stratify substances of different densities within a cell solution. In bacteriological diagnostics, it is often necessary to isolate bacteria from the test material and obtain pure cultures (i.e., cultures of a single bacterium). Therefore, centrifuges designed for cell culture are typically used to separate samples. The use of centrifuges for bacterial isolation is a fundamental technique in bacteriology. A crucial basic operation in diagnostics is cell culture, which requires large-scale proliferation. This necessitates the removal of certain characteristics, specifically digestion, to break down adherent proteins, disperse them, and facilitate nutrient exchange within the cells, enabling them to perform vital functions. In in vitro culture, the lack of a fully established circulatory system prevents the clear separation of nutrients and metabolic waste, leading to cell adhesion and poor nutrient supply. Furthermore, since nutrients and metabolic waste are mixed together, regular medium changes are necessary. Therefore, centrifugation is used to collect cells, enabling screening and medium replacement, allowing for optimal growth and facilitating cell research.

[0033] In a preferred embodiment, the fixed base 11 includes a fixed block 1101. The bottom of the fixed block 1101 is fixedly connected to the organism 1. The bottom front of the fixed block 1101 is fixedly connected to an air supply pipe 1102. The front of the air supply pipe 1102 is fixedly sleeved onto the organism 1. The bottom inside the fixed block 1101 is movably sleeved with a pressure block 1109. The top of the pressure block 1109 is fixedly connected to a connecting shaft 1108. The top of the connecting shaft 1108 is fixedly connected to a movable shaft 1105. The lower half of the movable shaft 1105 is movably sleeved on the outside. A rotating block 1103 is connected, and clamping blocks 1106 are movably sleeved around the top of the rotating block 1103. A spring 1107 is fixedly connected to one side of each clamping block 1106, and a fixing plate 1104 is fixedly connected to one side of each spring 1107. The rotating block 1103 is fixedly connected to the other side of the fixing plate 1104. A top plate 1110 is fixedly connected to the top of the rotating block 1103. The fixed base 11 clamps and fixes the rotor 7. Compared with the traditional method of fixing the rotor 7 using screws, this method is simpler and allows for faster replacement of the rotor 7.

[0034] In a preferred embodiment, the clamping device 10 includes a movable block 1001, a fixed rod 9 is movably connected to the front of the movable block 1001, a sliding block 1002 is fixedly connected to the back of the movable block 1001, a connecting block 1003 is movably connected to the bottom of the back of the sliding block 1002, a connecting rod 1004 is fixedly connected to the back of the connecting block 1003, and clamping claws 1005 are movably connected to both sides of the back of the connecting rod 1004. The clamping device 10 clamps and moves the rotor 7 inside the machine body 1, moving the rotor 7 from the fixed base 11 to the stationary base 6, so that the rotation and stationary position of the rotor 7 exist simultaneously without affecting each other.

[0035] In a preferred embodiment, both the sealing cap 3 and the dust cover 5 are made of transparent tempered glass. The sealing cap 3 is transparent to facilitate observation of the changes in the solution in the solution tube 8 when the rotor 7 rotates on the fixed base 11. The speed and time of the rotor 7 rotation are adjusted according to the changes in the solution in the solution tube 8 to improve the separation effect of the solution in the solution tube 8. The dust cover 5 is transparent to facilitate observation of the position of the rotor 7 and to monitor the state of the rotor 7 in the machine body 1 in real time. When the rotor 7 moves to the stationary base 6, the next solution separation can continue, or the solution tube 8 can be taken out after being stationary for a period of time, which helps to protect the layered state of the solution inside the solution tube 8.

[0036] In a preferred embodiment, four clamping blocks 1106 are evenly distributed around the moving shaft 1105 to ensure that the distance the clamping blocks 1106 travel when moving is the same, and to ensure that the clamping blocks 1106 evenly clamp the rotor 7 after expanding. The four clamping blocks 1106 are in contact with the upper half of the moving shaft 1105, and the lower half of the four clamping blocks 1106 are in contact with the upper half of the moving shaft 1105. Therefore, the curvature of the lower half of the four clamping blocks 1106 is the same as the curvature of the upper half of the moving shaft 1105, both gradually decreasing from bottom to top. When the moving shaft 1105 moves upward, since the clamping blocks 1106 do not move up and down, the portion of the moving shaft 1105 that is in contact with the four clamping blocks 1106 after moving upward... As the radius of curvature of the rotor increases, the radius of curvature of the four clamping blocks 1106 remains unchanged. Therefore, the moving shaft 1105 applies pressure to the four clamping blocks 1106 respectively, causing the four clamping blocks 1106 to move in all directions, thereby expanding the area formed by the outer periphery of the four clamping blocks 1106 and clamping and fixing them to the rotor 7 located on the top plate 1110. The length of the slot on the top plate 1110 is the same as the distance the clamping blocks 1106 move. When the four clamping blocks 1106 are subjected to pressure and move in all directions, the length and direction of the slot on the top plate 1110 correspond one-to-one with the four clamping blocks 1106, preventing the four clamping blocks 1106 from being obstructed during the movement and affecting the clamping and fixing of the rotor 7 by the clamping blocks 1106.

[0037] In a preferred embodiment, a groove is formed in the middle of the bottom of the rotor 7. The size of the groove is the same as the area formed by the outer periphery of the four clamping blocks 1106 after they expand outward. The four clamping blocks 1106 gradually expand outward as the moving shaft 1105 moves. When all four clamping blocks 1106 are tightly fitted with the groove at the bottom of the rotor 7, the moving shaft 1105 stops moving upward, thereby preventing the gas pipe 1102 from supplying pressure to the bottom of the pressure block 1109 and keeping the pressure inside the fixing block 1101 constant. The moving shaft 1105 remains in its upward position, so that the four clamping blocks 1106 firmly clamp and fix the rotor 7. The diameter of the cylinder at the top of the stationary base 6 is one centimeter smaller than the diameter of the groove at the bottom of the rotor 7. When the clamping device 10 moves the rotor 7 onto the stationary base 6, the top of the stationary base 6... The center of the cylinder and the center of the slot at the bottom of the rotor 7 are on the same plane. When the clamping claw 1005 drives the rotor 7 to fall onto the stationary base 6, the slot at the bottom of the rotor 7 coincides with the cylinder in the upper half of the stationary base 6, and the diameter of the slot at the bottom of the rotor 7 is slightly larger. During the fall, the rotor 7 will not rub against the cylinder in the upper half of the stationary base 6, ensuring that the rotor 7 falls smoothly onto the stationary base 6. The top of the stationary base 6 and the top of the clamping block 1106 are on the same plane. The position of the fixing rod 9 will not change, so the height of each part of the clamping device 10 will not change, and the height of the clamping claw 1005 clamping the rotor 7 during the movement will not change. Therefore, it is ensured that the top of the stationary base 6 and the top of the clamping block 1106 are on the same plane to prevent the rotor 7 from being obstructed when it moves above the stationary base 6.

[0038] In a preferred embodiment, the weight of the rotating block 1103 is 1.5 times greater than the upward lifting force of the pressure block 1109. The air supply pipe 1102 delivers pressure to the lower part of the pressure block 1109, making the pressure below the pressure block 1109 greater than the pressure above it. This causes the pressure block 1109 to move upward. The upward movement of the pressure block 1109 drives the moving shaft 1105 to move upward. The moving shaft 1105 is located inside the rotating block 1103. Therefore, when the weight of the rotating block 1103 is greater than the upward lifting force of the moving shaft 1105, the rotating block 1103 will not move with the upward lifting of the moving shaft 1105. This ensures that the clamping block 1106 will not move up and down, thus guaranteeing the clamping and fixing effect of the clamping block 1106 on the rotor 7.

[0039] In a preferred embodiment, the clamping device 10 does not contact the solution test tube 8. The solution test tube 8 rotates with the rotor 7. The clamping device 10 needs to maintain stability while clamping the rotor 7. Therefore, the clamping device 10 is made of a hard material, while the solution test tube 8 is generally made of glass. The impact force generated when the solution test tube 8 rotates is too large. If the solution test tube 8 touches the clamping device 10 while rotating, it will be broken the moment it touches the clamping device 10, causing the solution inside the solution test tube 8 to spill out. Therefore, the solution test tube 8 does not touch the clamping device 10 to ensure the rigor of the experiment. When the moving block 1001 is stationary, it is located at the rotor. At the middle position of 7, the moving block 1001 is indirectly connected to the connecting rod 1004. The back of the connecting rod 1004 is movably connected to the clamping claw 1005. After the clamping claw 1005 moves the same distance to the rotor 7, it clamps and fixes the rotor 7. When the clamping device 10 is stationary, the connecting block 1003 is located at the bottom of the sliding block 1002. At the same time, the bottom of the clamping claw 1005 and the bottom of the rotor 7 are on the same plane. The clamping claw 1005 moves the rotor 7 upward from the bottom. After the clamping claw 1005 clamps and fixes the rotor 7, it controls the connecting block 1003 to move upward on the sliding block 1002, so as to remove the rotor 7 from the fixed base 11.

[0040] In a preferred embodiment, the length of the sliding block 1002 is one centimeter longer than the height of the clamping block 1106 that extends above the top plate 1110. The clamping block 1106 that extends above the top plate 1110 is the part that clamps and fixes the rotor 7. When the rotor 7 is fixed on the fixed base 11, the bottom of the rotor 7 is in contact with the top of the top plate 1110. Therefore, when the clamping claw 1005 removes the rotor 7 from the fixed base 11, it is necessary to move the rotor 7 upwards until the bottom of the rotor 7 is above the top of the clamping block 1106, while ensuring that the length of the sliding block 1002 is sufficient.

[0041] In a preferred embodiment, the fixing rod 9 always remains straight, ensuring that the moving block 1001 connected to the clamping claw 1005 keeps the rotor 7 straight and does not tilt when moving. When the two clamping claws 1005 clamp, they fit tightly against the rotor 7, clamping and fixing the rotor 7, ensuring that the rotor 7 will not come off the clamping claws 1005 during the movement, and ensuring that the rotor 7 will not fall into the machine body 1.

[0042] The working principle of this invention is as follows: First, the rotor 7 is placed above the fixed base 11. Then, the corresponding program is selected on the operation interface 2, and air pressure is supplied to the fixed block 1101 through the air supply pipe 1102. The air pressure supplied by the air supply pipe 1102 is input from the bottom of the pressure block 1109. The pressure at the bottom of the pressure block 1109 is greater than the pressure above it, thereby pushing the pressure block 1109 to move upward. Since the top of the pressure block 1109 is fixedly connected to the connecting shaft 1108, and the top of the connecting shaft 1108 is fixedly connected to the moving shaft 1105, and the moving shaft 1105 is surrounded by clamping blocks 1106, the upward movement of the pressure block 1109 drives the moving shaft 1105 to move upward. Meanwhile, the weight of the rotating block 1103 itself is 1.5 times greater than the upward force of the pressure block 1109, so the rotating block 1103 will not move upward. The four clamping blocks 1106 expand outward with the movement of the moving shaft 1105. When the four clamping blocks 1106 expand outward and fit into the groove at the bottom of the rotor 7, the gas supply pipe 1102 stops supplying gas pressure into the fixed block 1101 and keeps the pressure inside the fixed block 1101 stable, so that the clamping blocks 1106 clamp the fixed rotor 7. Then, the solution test tube 8 is placed on the rotor 7, the sealing cap 3 and the dust cover 5 are closed, and the operation interface 2 supplies kinetic energy to the rotating block 1103 to drive the rotating block 1103 to rotate, thereby driving the rotor 7 to rotate.

[0043] After the rotor 7 has rotated for a certain period of time, the solution in the solution test tube 8 is separated by centrifugal force. Then, the control interface 2 sends power to the clamping device 10. Since the connecting block 1003 is initially located at the bottom of the sliding block 1002, and the clamping claws 1005 are located on both sides of the rotor 7, after the two clamping claws 1005 clamp the rotor 7, the pressure in the fixed block 1101 is released, causing the pressure under the pressure block 1109 to gradually decrease, causing the pressure block 1109 to move downward, thereby driving the moving shaft 1105 to move downward. A spring 1107 is fixedly connected to one side of the clamping block 1106. When the clamping block 1106 expands outward, it exerts pressure on the spring 1107. After the clamping block 1106 loses the pressure of the moving shaft 1105, the spring 1107 loses the pressure of the clamping block 1106. The rebound force of the spring 1107 causes the clamping block 1106 to move back to its original position, thereby causing the clamping block 1106 to move downward. The area formed by the outer perimeter of the 6th phase decreases, losing its control over the rotor 7. After the rotor 7 is no longer held by the clamping block 1106, the connecting block 1003 is moved upward. Since the back of the connecting block 1003 is fixedly connected to the connecting rod 1004, and the back of the connecting rod 1004 is movably connected to the clamping claw 1005, when the connecting block 1003 moves upward, the clamping claw 1005 clamps the rotor 7 and drives the rotor 7 to move upward together. When the bottom of the rotor 7 moves above the clamping block 1106, the moving block 1001 is moved along the fixed rod 9 to the stationary base 6. When the rotor 7 is moved above the stationary base 6, the moving block 1001 stops moving. Then, the connecting block 1003 is moved downward along the sliding block 1002, and the two clamping claws 1005 are moved to the sides respectively to place the rotor 7 on the stationary base 6. The process of the rotor 7 inside the machine body 1 can be observed through the sealing cover 3 and the dust cover 5.

[0044] When the next separation is required, open the sealing cover 3 and place the new rotor 7 on the fixed base 11 to perform the separation experiment again. Afterwards, open the dust cover 5 and take out the rotor 7 from the static base 6 to observe the solution test tube 8. The separation of the fixed base 11 and the removal of the rotor 7 do not interfere with each other.

Claims

1. A centrifuge for cell culture, comprising a body (1), characterized in that: A sealing cover (3) is movably connected to the back of one side of the top of the machine body (1). A sealing ring (4) is fixedly connected to the center of the front of the sealing cover (3). A dust cover (5) is movably connected to the back of the other side of the top of the machine body (1). An operating interface (2) is fixedly connected to the center of the front of the machine body (1). A fixed base (11) is fixedly sleeved on one side of the bottom inside the machine body (1). A rotor (7) is movably sleeved on the top of the fixed base (11). Solution test tubes (8) are movably sleeved around the top of the rotor (7). A static base (6) is fixedly sleeved on the other side of the bottom inside the machine body (1). A fixed rod (9) is fixedly sleeved on the center of the front inside the machine body (1). A clamping device (10) is movably connected to the back of the fixed rod (9). The fixed base (11) includes a fixed block (1101), the bottom of which is fixedly connected to an organism (1), and a gas supply pipe (1102) is fixedly connected to the bottom front of the fixed block (1101). The front of the gas supply pipe (1102) is fixedly sleeved onto the organism (1). A pressure block (1109) is movably sleeved inside the bottom of the fixed block (1101). A connecting shaft (1108) is fixedly connected to the top of the pressure block (1109), and a moving shaft (1) is fixedly connected to the top of the connecting shaft (1108). 105), a rotating block (1103) is movably sleeved on the lower half of the moving shaft (1105). Clamping blocks (1106) are movably sleeved on all four sides of the top of the rotating block (1103). A spring (1107) is fixedly connected to one side of each clamping block (1106). A fixing plate (1104) is fixedly connected to one side of each spring (1107). A rotating block (1103) is fixedly connected to the other side of each fixing plate (1104). A top plate (1110) is fixedly connected to the top of the rotating block (1103). The clamping device (10) includes a movable block (1001), a fixed rod (9) is movably connected to the front of the movable block (1001), a sliding block (1002) is fixedly connected to the back of the movable block (1001), a connecting block (1003) is movably connected to the bottom of the back of the sliding block (1002), a connecting rod (1004) is fixedly connected to the back of the connecting block (1003), and clamping claws (1005) are movably connected to both sides of the back of the connecting rod (1004). The four clamping blocks (1106) are evenly distributed around the moving shaft (1105). The four clamping blocks (1106) are in contact with the upper half of the moving shaft (1105). The curvature of the lower half of the four clamping blocks (1106) is the same as that of the upper half of the moving shaft (1105), and both gradually decrease from bottom to top. The length of the slot on the top plate (1110) is the same as the distance the clamping blocks (1106) move. The rotor (7) has a groove in the middle of its bottom. The size of the groove is the same as the range formed by the outer periphery of the four clamping blocks (1106) after they expand outward. The diameter of the cylinder at the top of the stationary base (6) is one centimeter smaller than the diameter of the groove at the bottom of the rotor (7). The top of the stationary base (6) and the top of the clamping block (1106) are on the same plane.

2. A centrifuge for cell culture according to claim 1, characterized in that: Both the sealing cap (3) and the dust cover (5) are made of transparent tempered glass.

3. A centrifuge for cell culture according to claim 2, characterized in that: The weight of the rotating block (1103) is 1.5 times greater than the upward force of the pressure block (1109).

4. A centrifuge for cell culture according to claim 3, characterized in that: The clamping device (10) does not contact the solution test tube (8). When the moving block (1001) is stationary, it is located in the middle of the rotor (7). When the clamping device (10) is stationary, the connecting block (1003) is located at the bottom of the sliding block (1002). At the same time, the bottom of the clamping claw (1005) and the bottom of the rotor (7) are on the same plane.

5. A centrifuge for cell culture according to claim 4, characterized in that: The length of the sliding block (1002) is one centimeter greater than the height of the clamping block (1106) which extends above the top plate (1110).

6. A centrifuge for cell culture according to claim 5, characterized in that: The fixing rod (9) always remains straight, and the two clamping claws (1005) are in close contact with the rotor (7) when clamping.

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