A high-speed, large-capacity refrigerated centrifuge

Abstract

This invention belongs to the field of refrigerated centrifuge technology, specifically a high-speed, large-capacity refrigerated centrifuge. It includes a body, with a control system inside; the upper surface of the body is rotatably connected to a cover; a centrifuge chamber is located inside the body; a centrifuge disc is rotatably connected inside the centrifuge chamber; a rotor is mounted on the centrifuge disc; a cylindrical groove is formed at the center of the rotor, and a ratchet ring is fixedly connected within the cylindrical groove; a pawl disc is provided within the ratchet ring; a rotating column is fixedly connected through the inner wall of the pawl disc; in each centrifuge zone, uniformly arranged through slots are formed in the inner wall of the rotor, and these through slots communicate with the cylindrical groove; each centrifuge zone is equipped with a placement mechanism. This invention mainly addresses the problem that when multiple small test tubes are placed inside a cylinder, gaps exist between the small test tubes and between the small test tubes and the cylinder, which may cause collisions between the test tubes at the start of centrifugation, thus affecting the centrifugation process.

Description

Technical Field

[0001] This invention belongs to the field of refrigerated centrifuge technology, specifically a high-speed, large-capacity refrigerated centrifuge. Background Technology

[0002] Centrifuges, also known as sedimentation equipment, come in various types, including separation centrifuges used to quickly separate suspended matter from liquids, preparative centrifuges used for concentrating and purifying microparticles, and low-speed analytical centrifuges used for laboratory analysis. Although centrifuges differ in type, their functions can be categorized as separation, concentration, purification, and analysis.

[0003] High-speed refrigerated centrifuges can reach speeds of over 10,000 rpm. In addition to the performance and structure of refrigerated centrifuges, the angle rotors used in high-speed refrigerated centrifuges are mostly made of titanium or aluminum alloy. The centrifuge tubes are made of capped polyethylene hard plastic. These centrifuges are mainly used to collect microorganisms, cell debris, cells, large organelles, sulfuric acid precipitates, and immunoprecipitates, etc.

[0004] However, when centrifuging test tubes of different sizes, different types of rotors need to be changed, and then the corresponding test tubes are placed in the rotor to centrifuge test tubes of different sizes. However, when centrifuging multiple small test tubes, the staff often put multiple small test tubes in a cylinder, and then put the cylinder in the rotor for centrifugation.

[0005] However, when centrifuging in this way, firstly, it is necessary to replace the rotor with one that matches the test tube. Secondly, when multiple small test tubes are placed inside the cylinder, there are gaps between the small test tubes and between the small test tubes and the cylinder, which may cause collisions between the test tubes at the start of centrifugation, thus affecting the centrifugation process.

[0006] In view of this, in order to alleviate the problems caused by the above-mentioned defects, this invention designs and develops a high-speed, large-capacity refrigerated centrifuge. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention proposes a high-speed, large-capacity refrigerated centrifuge, comprising: a body, wherein a control system is provided within the body; the upper end face of the body is rotatably connected to a cover; a centrifuge chamber is provided within the body; a centrifuge disc is rotatably connected within the centrifuge chamber, and the centrifuge disc is fixedly connected to the output shaft of a drive motor within the body.

[0008] The centrifuge disc is equipped with a rotor, which is cross-shaped when viewed from above, dividing the centrifuge disc into four centrifuge zones. A cylindrical groove is formed at the center of the rotor, and a ratchet ring is fixedly connected inside the cylindrical groove. A pawl disc is provided inside the ratchet ring. A rotating column is fixedly connected through the inner wall of the pawl disc and extends to the top of the rotor. In each centrifuge zone, uniformly arranged through slots are formed in the inner wall of the rotor, and all through slots are connected to the cylindrical groove. A placement mechanism is provided in each centrifuge zone.

[0009] The placement mechanism includes,

[0010] A surrounding layer is disposed within the centrifugal zone, and the two end faces of the surrounding layer are in contact with the rotor.

[0011] Clamping layer assembly; multiple clamping layer assemblies are provided in the centrifugation zone; one side of each clamping layer assembly passes through a through groove and is fixedly connected to the rotating column, and the other side is fixedly connected to the surrounding layer; there is a gap between the clamping layer assembly and the surface of the centrifugation disk; the clamping layer assembly is formed by two partition layers bonded together;

[0012] A filling layer is provided in each centrifugation zone, and the filling layer is located on both sides of the clamping layer group, initially adhering to the clamping layer group; the filling layer is fixed to the upper surface of the centrifugation tray;

[0013] Multiple sets of cylinders are inserted between the two partitions in each of the clamping layer groups; each set of cylinders includes two corresponding semi-cylinders, and the two semi-cylinders correspond to each other as cylinders;

[0014] Each of the semi-cylinders has a smooth outer surface design;

[0015] Each of the semi-cylinders extends a clamping layer assembly from its top and bottom ends;

[0016] The diameter of the side of each of the semi-cylinders extending out of the clamping layer group is larger than the diameter of the side not extending out of the clamping layer group;

[0017] Each of the clamping layer groups is fitted with a uniformly arranged spiral layer, and the partition is located inside the opening of the spiral layer; each spiral layer is disposed on the clamping layer group on the side of the cylinder near the rotating column;

[0018] The opening of each of the aforementioned spiral layers has a smooth surface;

[0019] Each of the filling layers has a cavity, and the cavity is filled with gas;

[0020] Each of the centrifugal zones has a groove in the inner wall of the rotor on both sides, and a slider is slidably connected in the groove. The slider is fixed to the side of the adjacent surrounding layer. A pull strap is fixed to the slider, and the other side of the pull strap is fixed to the rotating column.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The high-speed, large-capacity refrigerated centrifuge of the present invention, in which the semi-cylinders and the partition push the semi-cylinders apart when the test tube is pressed down, and also push the partition to expand outward, and the distance of separation of the semi-cylinders and the degree of expansion of the partition are determined according to the diameter of the test tube, so when test tubes of different specifications are inserted into the cylinder, the distance of separation of the semi-cylinders and the degree of expansion of the partition will change, but the inserted test tubes can still be clamped. Therefore, test tubes of different specifications can be clamped by the semi-cylinders and the partition. When the size difference of the test tubes to be centrifuged is too large, it is still not necessary to change the rotor to achieve clamping of the test tubes.

[0023] 2. The high-speed, large-capacity refrigerated centrifuge of the present invention, when the rotating column is wound with the pull belt, will pull the slider to slide towards the rotating column position in the slide groove, thereby driving the two sides of the surrounding layer to move towards the rotating column position, and causing the entire surrounding layer to move towards the rotating column position. During the process of the surrounding layer being pulled, the surrounding layer can squeeze the filling layer. When the filling layer is squeezed, it can make better contact with the clamping layer assembly, thereby improving the degree of fixation of the filling layer to the clamping layer assembly. At the same time, as the clamping layer assembly is pulled into the cylindrical groove, when the clamping layer assembly is tightened, the U-shaped layer will lock the semi-cylinder and the test tube inside the semi-cylinder. At this time, in conjunction with the squeezing of the filling layer by the surrounding layer, the filling layer can squeeze the clamping layer assembly, thereby improving the degree of fixation of the semi-cylinder and the test tube, preventing the test tube from shaking during centrifugation due to insecure fixation.

[0024] 3. The high-speed, large-capacity refrigerated centrifuge of the present invention, because the diameter of the side of the casing near the identification ring where the top and bottom of the semi-cylinders extend out of the clamping layer group is larger than the diameter of the side where they do not extend out of the clamping layer group, allows the operator to more easily insert the test tubes into the cylinder formed by the two semi-cylinders when inserting them into the corresponding semi-cylinders. At the same time, when the loop layer compresses the semi-cylinders, because the diameter of the top and bottom of the semi-cylinders is larger than the diameter of the semi-cylinders located within the clamping layer group, it can prevent the semi-cylinders from being squeezed out of the corresponding partitions in the clamping layer group, thereby preventing the two semi-cylinders forming the cylinder from sliding out of the clamping layer group during centrifugation of the test tubes. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a perspective view of the present invention;

[0027] Figure 2 This is a perspective view of the centrifugal disc, rotor, and placement mechanism in this invention;

[0028] Figure 3 This is a perspective view of the rotating head and placement mechanism in this invention;

[0029] Figure 4 In this invention Figure 2 A top view of

[0030] Figure 5 This is the present invention. Figure 4 Sectional view of AA;

[0031] Figure 6 This is the present invention. Figure 5 Enlarged view of a section at point B in the middle;

[0032] Figure 7 In this invention Figure 2 The main view;

[0033] Figure 8 This is the present invention. Figure 7 CC section view;

[0034] Figure 9 This is the present invention. Figure 8 Enlarged view of a section at point D;

[0035] Figure 10 This is the present invention. Figure 8 Enlarged view of a section at point E in the middle;

[0036] In the picture:

[0037] 1. Body; 11. Cover; 12. Centrifuge chamber; 13. Centrifuge tray; 14. Rotor; 15. Centrifuge zone; 16. Cylindrical groove; 17. Ratchet ring; 18. Pad disc; 19. Rotating column; 191. Through groove; 2. Placement mechanism; 21. Enclosing layer; 22. Pull belt; 23. Slide groove; 24. Slider; 25. Clamping layer group; 26. Partition layer; 27. Filling layer; 3. Semi-cylinder; 31. U-shaped layer. Detailed Implementation

[0038] like Figures 1-10 As shown, the present invention provides a high-speed, large-capacity refrigerated centrifuge.

[0039] The system includes a body 1, which contains a control system; the upper surface of the body 1 is rotatably connected to a cover 11; a centrifuge chamber 12 is provided inside the body 1; a centrifuge disc 13 is rotatably connected inside the centrifuge chamber 12, and the centrifuge disc 13 is fixedly connected to the output shaft of a drive motor inside the body 1.

[0040] A rotor 14 is mounted on the centrifuge disc 13, and the rotor 14 is cross-shaped when viewed from above, dividing the centrifuge disc 13 into four centrifuge zones 15. A cylindrical groove 16 is formed at the center of the rotor 14, and a ratchet ring 17 is fixedly connected in the cylindrical groove 16. A pawl disc 18 is provided in the ratchet ring 17. A rotating column 19 is fixedly connected through the inner wall of the pawl disc 18, and the rotating column 19 extends above the rotor 14. In each centrifuge zone 15, a uniformly arranged through groove 191 is formed in the inner wall of the rotor 14, and the through groove 191 communicates with the cylindrical groove 16. A placement mechanism 2 is provided in each centrifuge zone 15.

[0041] The placement mechanism 2 includes,

[0042] Enclosing layer 21 is disposed within the centrifugal zone 15, and the two end faces of the enclosing layer 21 are in contact with the rotor 14.

[0043] Clamping layer group 25; multiple clamping layer groups 25 are provided in the centrifugation zone 15; one side of the clamping layer group 25 passes through the through groove 191 and is fixedly connected to the rotating column 19, and the other side is fixedly connected to the surrounding layer 21; there is a gap between the clamping layer group 25 and the surface of the centrifugation disk 13; the clamping layer group 25 is formed by two partitions 26 being bonded together.

[0044] A filling layer 27 is provided in each centrifugation zone 15, and the filling layer 27 is located on both sides of the clamping layer group 25. In the initial state, it is attached to the clamping layer group 25. The filling layer 27 is fixed to the upper surface of the centrifugation tray 13.

[0045] Multiple sets of cylinders are inserted between the two partitions 26 in each clamping layer group 25; each set of cylinders includes two corresponding semi-cylinders 3, and the two semi-cylinders 3 correspond to each other as cylinders;

[0046] Each of the semi-cylinders 3 has a smooth outer surface design;

[0047] Each of the semi-cylinders 3 has a clamping layer group 25 extending from its top and bottom ends;

[0048] The diameter of the side of each of the semi-cylinders 3 extending out of the clamping layer group 25 is larger than the diameter of the side not extending out of the clamping layer group 25.

[0049] Each of the clamping layer groups 25 is fitted with uniformly arranged spiral layers 31, and the partition layer 26 is located in the opening of the spiral layer 31; each of the spiral layers 31 is disposed on the clamping layer group 25 on the side of the cylinder near the rotating column 19.

[0050] The opening of each of the spiral layers 31 has a smooth surface;

[0051] Each of the filling layers 27 has a cavity, and the cavity is filled with gas;

[0052] Each of the centrifugal zones 15 has a groove 23 in the inner wall of the rotor 14 on both sides, and a slider 24 is slidably connected in the groove 23. The slider 24 is fixed to the side of the adjacent surrounding layer 21. A pull strap 22 is fixedly connected to the slider 24, and the other side of the pull strap 22 is fixedly connected to the rotating column 19.

[0053] The overall implementation method is as follows:

[0054] When centrifugation of the test tube is required, first open the cover 11 from the machine body 1, then align the test tube with the center of the cylinder composed of two semi-cylinders 3, and then press the test tube down inside the cylinder until it contacts the upper surface of the centrifuge tray 13. During the pressing process, the two semi-cylinders 3, which are in contact with each other, are pushed apart by the pushing force. During the separation of the two semi-cylinders 3, the partition 26 in the clamping layer group 25 will be pushed outward, and at the same time, the partition 26 will be squeezed by the outward expansion of the partition 26. Due to the separation of the semi-cylinders 3 and the partition 26, the filling layer 27 is compressed. 6 When the test tube is pressed down, it will push the semi-cylinders 3 to separate from each other and push the partition 26 to expand outward. The distance between the separation of the semi-cylinders 3 and the degree of expansion of the partition 26 are determined according to the diameter of the test tube. Therefore, when test tubes of different specifications are inserted into the cylinder, the distance between the separation of the semi-cylinders 3 and the degree of expansion of the partition 26 will change. However, the inserted test tubes can still be clamped. Therefore, test tubes of different specifications can be clamped by the semi-cylinders 3 and the partition 26. When the specifications of the test tubes to be centrifuged are too different, it is still not necessary to replace the rotor 14 to achieve clamping of the test tubes.

[0055] After the staff inserts the test tube completely into the semi-cylinder 3, they rotate the rotating column 19 clockwise. Since one side of the clamping layer is fixed to the rotating column 19, and the pull strap 22 on the slider 24, which is fixed to the surrounding layer 21, is also fixed to the rotating column 19, the pull strap 22 and the clamping layer assembly 25 will wrap around the rotating column 19 during rotation. When the rotating column 19 wraps around the clamping layer assembly 25, it will pull the clamping layer assembly 25 through the through groove 191 into the cylindrical groove 16. Simultaneously, as the clamping layer assembly 25 is pulled into the through groove 191, the loop layer 31 also moves towards the through groove 191. When the loop layer 31 and the through groove 19... 1. After contact, and when the clamping layer group 25 continues to be pulled into the through groove 191, the through groove 191 will push the loop layer 31 to squeeze the two semi-cylinders 3. When the two semi-cylinders 3 are squeezed by the loop layer 31, they will move towards the side of the surrounding layer 21 within the clamping layer group 25. During this process, the moving semi-cylinder 3 will squeeze the next loop layer 31. When the next loop layer 31 is squeezed, it will move on the clamping layer group 25 and squeeze the next semi-cylinder 3. Thus, the loop layer 31 can squeeze and fix the semi-cylinder 3 and the test tube inside the semi-cylinder 3, thereby improving the fixation degree of the test tube.

[0056] Simultaneously, when the rotating column 19 is wound around the pull belt 22, it will pull the slider 24 to slide towards the rotating column 19 in the slide groove 23, thereby driving the two sides of the surrounding layer 21 to move towards the rotating column 19, and causing the entire surrounding layer 21 to move towards the rotating column 19. During the process of the surrounding layer 21 being pulled, the surrounding layer 21 can squeeze the filling layer 27. When the filling layer 27 is squeezed, it can better contact the clamping layer group 25, thereby improving the degree of fixation of the filling layer 27 to the clamping layer group 25. At the same time, as the clamping layer group 25 is pulled into the cylindrical groove 16, when the clamping layer group 25 is tightened, the loop layer 31 will lock the semi-cylinder 3 and the test tube inside the semi-cylinder 3. At this time, in conjunction with the squeezing of the filling layer 27 by the surrounding layer 21, the filling layer 27 can squeeze the clamping layer group 25, thereby improving the degree of fixation of the semi-cylinder 3 and the test tube, preventing the test tube from shaking due to the test tube not being firmly fixed during centrifugation.

[0057] As the rotating column 19 rotates, it drives the pawl disc 18 to rotate within the ratchet ring 17. Once the rotating column 19 has tightened the clamping layer 25 and the pull strap 22, the operator stops rotating the rotating column 19. At this point, the pawl on the pawl disc 18 engages with the tooth groove on the ratchet ring 17, thus fixing the rotating column 19 and preventing it from rotating backward. After the test tube centrifugation is complete, the operator pulls the rotating column 19 upward to disengage the pawl disc 18 from the ratchet ring 17, and then rotates the rotating column 19 in the opposite direction to restore the clamping layer 25 and the surrounding layer 21 to their initial state. The test tube can then be removed.

[0058] Furthermore, when the spiral layer 31 compresses the semi-cylinder 3, the smooth design of the semi-cylinder 3 reduces the friction between the semi-cylinder 3 and the partition layer 26, thus preventing excessive friction between the semi-cylinder 3 and the partition layer 26, which would make it difficult for the semi-cylinder 3 to slide within the partition layer 26. At the same time, since the diameter of the side of the semi-cylinder 3 extending out of the clamping layer group 25 is larger than the diameter of the side not extending out of the clamping layer group 25, when the staff inserts the test tube into the corresponding semi-cylinder 3, it is easier to insert the test tube into the cylinder formed by the two semi-cylinders 3. Also, when the spiral layer 31 compresses the semi-cylinder 3, since the diameter of the top and bottom of the semi-cylinder 3 is larger than the diameter of the semi-cylinder 3 within the clamping layer group 25, it prevents the semi-cylinder 3 from being squeezed out of the corresponding partition layer 26 within the clamping layer group 25, thus preventing the two semi-cylinders 3 forming the cylinder from sliding out of the clamping layer group 25 during centrifugation of the test tube.

[0059] Specifically, since the opening of the spiral layer 31 is a smooth surface, when the spiral layer 31 slides on the clamping layer group 25, the friction between the spiral layer 31 and the clamping layer group 25 can be reduced, thereby allowing the arc-shaped layer to slide more easily on the clamping layer group 25 and to compress the semi-cylinder 3.

[0060] Furthermore, since the cavity inside the filling layer 27 is filled with gas, when the pull strap 22 pulls the surrounding layer 21 toward the rotating column 19 via the slider 24, the surrounding layer 21 will squeeze the filling layer 27. When the filling layer 27 is squeezed, it can better fit the clamping layer group 25, thereby squeezing the test tube clamped in the clamping layer group 25 and improving the degree of clamping of the test tube.

[0061] The above embodiments illustrate and describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed, large-capacity refrigerated centrifuge, comprising: a body (1), wherein a control system is provided inside the body (1); the upper end face of the body (1) is rotatably connected to a cover (11); a centrifuge chamber (12) is provided inside the body (1); a centrifuge disc (13) is rotatably connected inside the centrifuge chamber (12), and the centrifuge disc (13) is fixedly connected to the output shaft of a drive motor inside the body (1); Its features are, A rotor (14) is installed on the centrifuge disc (13). The rotor (14) is cross-shaped when viewed from above and divides the centrifuge disc (13) into four centrifuge zones (15). A cylindrical groove (16) is opened at the center of the rotor (14). A ratchet ring (17) is fixedly connected in the cylindrical groove (16). A pawl disc (18) is provided in the ratchet ring (17). A rotating column (19) is fixedly connected through the inner wall of the pawl disc (18) and extends to the top of the rotor (14). In each centrifuge zone (15), a uniformly arranged through groove (191) is opened in the inner wall of the rotor (14). The through groove (191) is connected to the cylindrical groove (16). A placement mechanism (2) is provided in each centrifuge zone (15). The placement mechanism (2) includes, Enclosure (21), the enclosure (21) is disposed in the centrifugal zone (15), and the two end faces of the enclosure (21) are in contact with the rotor (14); Clamping layer group (25); multiple clamping layer groups (25) are provided in the centrifugal zone (15); one side of the clamping layer group (25) passes through the through groove (191) and is fixedly connected to the rotating column (19), and the other side is fixedly connected to the surrounding layer (21); there is a gap between the clamping layer group (25) and the surface of the centrifugal disk (13); the clamping layer group (25) is formed by two partitions (26) being bonded together; A filling layer (27) is provided in each centrifugation zone (15). The filling layer (27) is located on both sides of the clamping layer group (25) and is initially attached to the clamping layer group (25). The filling layer (27) is fixed to the upper surface of the centrifugation tray (13). Multiple sets of cylinders are inserted between the two partitions (26) in each clamping layer group (25); each set of cylinders includes two corresponding semi-cylinders (3), and the clamping layer group (25) extends out from the top and bottom of each semi-cylinder (3); the diameter of the side of each semi-cylinder (3) extending out from the clamping layer group (25) is larger than the diameter of the side not extending out from the clamping layer group (25); each clamping layer group (25) is fitted with uniformly arranged... The loop-shaped layer (31) has a cavity in each of the filling layers (27) and the cavity is filled with gas; the inner wall of the rotor (14) on both sides of each centrifugal zone (15) is provided with a groove (23), and a slider (24) is slidably connected in the groove (23). The slider (24) is fixed to the side of the adjacent surrounding layer (21); a pull strap (22) is fixedly connected to the slider (24), and the other side of the pull strap (22) is fixedly connected to the rotating column (19).

2. The high-speed, large-capacity refrigerated centrifuge according to claim 1, characterized in that: The two semi-cylinders (3) correspond to form a cylinder.

3. A high-speed, large-capacity refrigerated centrifuge according to claim 1, characterized in that: Each of the semi-cylinders (3) has a smooth outer surface design.

4. A high-speed, large-capacity refrigerated centrifuge according to claim 1, characterized in that: The partition (26) is located inside the opening of the loop layer (31); each of the loop layers (31) is disposed on the clamping layer group (25) on the side of the cylinder near the rotating column (19).

5. A high-speed, large-capacity refrigerated centrifuge according to claim 4, characterized in that: The opening of each of the aforementioned spiral layers (31) has a smooth surface.

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