Centrifugal machine

Abstract

The centrifugal machine comprises a machine body, a test tube rack and a driving part, the machine body comprises a base and a cover body, and the cover body is fixedly arranged at the top of the base; the test tube rack comprises a rotating shaft, the rotating shaft is rotatably arranged in the cover body in the vertical direction, a first tray, a second tray and a third tray are sequentially and fixedly arranged on the rotating shaft from bottom to top at intervals, a plurality of first through holes are formed in the second tray in the circumferential direction at intervals, and a plurality of second through holes are formed in the third tray in the circumferential direction at intervals; the plurality of second through holes are different from the plurality of first through holes in inner diameter, and orthographic projections of the plurality of second through holes on the second tray are not intersected with the plurality of first through holes; the driving piece is arranged in the base, connected with the rotating shaft and used for driving the rotating shaft to rotate. The problem that in the prior art, a centrifugal machine is inconvenient to load centrifugal tubes of different models at the same time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, and particularly relates to a centrifuge. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to separate the components in a mixture of liquid and solid particles or liquid and liquid. A centrifuge is mainly used to separate solid particles from a suspension from the liquid, or to separate two immiscible liquids with different densities in an emulsion. It can also be used to remove liquid from wet solids.

[0003] For example, in the patent document with the existing patent application number CN202221658943.X, a medical centrifuge is disclosed, which specifically discloses a housing with a hollow structure and a cover hinged to the housing above the housing. A switch button for controlling the opening and closing of the centrifuge is arranged on the front of the housing. On both sides of the switch button, a time adjustment module for controlling the running time of the centrifuge and a speed adjustment module for controlling the running speed of the centrifuge are respectively arranged. A storage space for receiving centrifuge bottles is also arranged in the housing. A placement rack for placing centrifuge bottles is arranged in the storage space. The bottom of the placement rack is connected to a motor. An annular sound insulation ring for connecting with the cover is arranged above the storage space. A sound insulation device for eliminating noise is arranged on the inner wall of the housing. Through the above scheme, the placement rack can only load centrifuge tubes of one model, which is not convenient for loading centrifuge tubes of different models at the same time, and the scope of use is limited. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies and provide a centrifuge to solve the problem that it is not convenient to load centrifuge tubes of different models at the same time in the existing centrifuge technology.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a centrifuge, which includes a machine body, a test tube rack and a driving member. The machine body includes a base and a cover body. The cover body is fixedly arranged on the top of the base.

[0007] The test tube rack includes a rotating shaft, which is rotatably arranged in the cover body along the vertical direction. A first tray, a second tray and a third tray are successively and spacedly fixed on the rotating shaft from bottom to top. A plurality of first through holes are spacedly arranged along the circumferential direction of the second tray. A plurality of second through holes are spacedly arranged along the circumferential direction of the third tray. The inner diameters of the plurality of second through holes are different from those of the plurality of first through holes, and the orthographic projections of the plurality of second through holes on the second tray do not intersect with the plurality of first through holes.

[0008] The driving member is arranged in the base and connected to the rotating shaft. The driving member is used to drive the rotating shaft to rotate.

[0009] In some embodiments, a fourth tray is further included. The fourth tray is fixedly connected to the rotating shaft and is located above the third tray. A plurality of third through holes are formed in the fourth tray. The inner diameters of the plurality of third through holes are different from those of the plurality of first through holes and second through holes, and the orthographic projection of the plurality of third through holes on the third tray does not intersect with the plurality of second through holes.

[0010] In some embodiments, a plurality of first grooves are formed in the first tray, and the plurality of first grooves respectively correspond to the respective first through holes one by one.

[0011] In some embodiments, a plurality of second grooves are formed in the second tray, and the plurality of second grooves respectively correspond to the respective second through holes one by one.

[0012] In some embodiments, a plurality of third grooves are formed in the third tray, and the plurality of third grooves respectively correspond to the respective third through holes one by one.

[0013] In some embodiments, a limiting sleeve is respectively provided on the lower surface of the second tray corresponding to each of the first through holes, and the limiting sleeve is formed by enclosing a plurality of elastic pressing pieces.

[0014] In some embodiments, a plurality of bull's-eye bearings are provided on the base, and the plurality of bull's-eye bearings support the lower surface of the first tray.

[0015] In some embodiments, a locking unit is further included. The locking unit includes a limiting block, a telescopic member, and a locking block. The limiting block is fixedly provided on the rotating shaft. The telescopic member is fixedly provided in the base, and the output end of the telescopic member is connected to the locking block. The telescopic member can drive the locking block to abut against the limiting block.

[0016] In some embodiments, the inner diameters of the first tray and the second tray are the same. The inner diameter of the second tray is greater than that of the third tray, and the inner diameter of the third tray is greater than that of the fourth tray.

[0017] In some embodiments, the inner diameter of the first through hole is smaller than that of the second through hole, and the inner diameter of the second through hole is smaller than that of the third through hole.

[0018] Compared with the prior art, a centrifuge provided by the present utility model has a cover body fixedly arranged on the top of a base, a rotating shaft rotatably arranged in the cover body along the vertical direction, a first tray, a second tray and a third tray are sequentially and spacedly fixed on the rotating shaft from bottom to top, the second tray is provided with a plurality of first through holes at circumferential intervals, the third tray is provided with a plurality of second through holes at circumferential intervals, the inner diameters of the plurality of second through holes and the plurality of first through holes are different, and the orthographic projection of the plurality of second through holes on the second tray does not intersect with the plurality of first through holes. Centrifuge tubes of two different inner diameters can be respectively inserted into the first through holes and the second through holes, ensuring that the centrifuge can be applicable to centrifuge tubes of two different models, and centrifuge tubes of different models are located on different height layers, facilitating the distinction of centrifuge tubes of different models and making the use more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a test tube rack provided by an embodiment of the present utility model;

[0020] Figure 2 is a schematic structural diagram of a centrifuge provided by an embodiment of the present utility model;

[0021] Figure 3 is a schematic internal structural diagram of a base provided by an embodiment of the present utility model;

[0022] Figure 4 is a schematic structural diagram of a second tray provided by an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] In order to solve the technical problem that the centrifuge in the prior art is not convenient to load centrifuge tubes of different models at the same time, the present utility model provides a centrifuge that can be applicable to centrifuge tubes of different models and is convenient to use.

[0025] Please refer to Figures 1-4 , Figures 1-4A centrifuge in an embodiment of the present utility model includes a machine body 1, a test tube rack 2, and a driving member 3. The machine body 1 includes a base 11 and a cover 12, and the cover 12 is fixedly arranged on the top of the base 11. The test tube rack 2 includes a rotating shaft 21, and the rotating shaft 21 is rotatably arranged in the cover 12 in the vertical direction. A first tray 22, a second tray 23, and a third tray 24 are sequentially and spacedly fixed on the rotating shaft 21 from bottom to top. A plurality of first through holes 231 are arranged at intervals in the circumferential direction of the second tray 23, and a plurality of second through holes 241 are arranged at intervals in the circumferential direction of the third tray 24. The inner diameters of the plurality of second through holes 241 are different from those of the plurality of first through holes 231, and the orthographic projections of the plurality of second through holes 241 on the second tray 23 do not intersect with the plurality of first through holes 231. The driving member 3 is arranged in the base 11 and connected to the rotating shaft 21, and the driving member 3 is used to drive the rotating shaft 21 to rotate.

[0026] In this specific embodiment, there is a height difference h1 between the first tray 22 and the second tray 23, and a height difference h2 between the second tray 23 and the third tray 24, and both h1 and h2 are greater than the length of the centrifuge tube. When a certain type of centrifuge tube is inserted into the first through hole 231, the bottom of the centrifuge tube abuts against the first tray 22. When another type of centrifuge tube is inserted into the second through hole 241, the bottom of the centrifuge tube abuts against the second tray 23.

[0027] On the basis of the above solution, in order to be applicable to other types of centrifuge tubes, specifically, a fourth tray 25 is further included. The fourth tray 25 is fixedly connected to the rotating shaft 21 and is located above the third tray 24. A plurality of third through holes 251 are formed in the fourth tray 25. The inner diameters of the plurality of third through holes 251 are different from those of the plurality of first through holes 231 and second through holes 241, and the orthographic projections of the plurality of third through holes 251 on the third tray 24 do not intersect with the plurality of second through holes 241.

[0028] In this specific embodiment, the inner diameters of the first tray 22 and the second tray 23 are the same, the inner diameter of the second tray 23 is greater than that of the third tray 24, and the inner diameter of the third tray 24 is greater than that of the fourth tray 25. Among them, the inner diameter of the first through hole 231 is smaller than that of the second through hole 241, and the inner diameter of the second through hole 241 is smaller than that of the third through hole 251.

[0029] It should be noted that, in order to prevent the centrifuge tube from shaking, specifically, a plurality of first grooves 221 are formed on the first tray 22, and the plurality of first grooves 221 respectively correspond to the first through holes 231 one by one; the second tray 23 is provided with a plurality of second grooves 232, and the plurality of second grooves 232 respectively correspond to the second through holes 241 one by one; the third tray 24 is provided with a plurality of third grooves 242, and the plurality of third grooves 242 respectively correspond to the third through holes 251 one by one.

[0030] On the basis of the above solution, a limiting sleeve 233 is respectively provided on the lower surface of the second tray 23 corresponding to each of the first through holes 231. In other embodiments, a limiting sleeve 233 is also respectively provided on the lower surface of the third tray 24 corresponding to each of the second through holes 241, and a limiting sleeve 233 is also respectively provided on the lower surface of the fourth tray 25 corresponding to each of the third through holes 251. And the limiting sleeve 233 is formed by enclosing a plurality of elastic pressing pieces. Specifically, by providing the limiting sleeve 233 and the inner diameter of the limiting sleeve 233 is arranged to be reduced, the reagent tube can be better clamped to prevent the reagent tube from shaking when rotating.

[0031] On the basis of the above solution, a plurality of bull's-eye bearings 4 are provided on the base 11, and the plurality of bull's-eye bearings 4 support the lower surface of the first tray 22; specifically, the plurality of bull's-eye bearings 4 are arranged along the circumferential direction of the first tray 22. It should be noted that the plurality of bull's-eye bearings 4 can improve the support strength of the first tray 22.

[0032] On the basis of the above solution, in order to prevent the rotating shaft from rotating around its own axis when the centrifuge is not working, specifically, a locking unit 5 is further included. The locking unit 5 includes a limiting block 51, a telescopic member 52 and a locking block 53. The limiting block 51 is fixedly arranged on the rotating shaft 21, the telescopic member 52 is fixedly arranged in the base 11, and the output end of the telescopic member 52 is connected to the locking block 53. The telescopic member 52 can drive the locking block 53 to abut against the limiting block 51.

[0033] It should be noted that the telescopic member 52 is two electric push rods fixedly arranged in the base. The locking block is slidably sleeved on the rotating shaft. The movable ends of the electric push rods are fixedly connected to the locking block 53, and the two electric push rods can drive the locking block 53 to abut against the limiting block 51. Specifically, a plurality of limiting protrusions are arranged on the locking block, and a limiting groove matching with the plurality of limiting protrusions is formed on the locking block 53.

[0034] For a better understanding of the present invention, the following is combined with Figures 1 to 4 to describe the technical solution of the present invention in detail:

[0035] Three different types of centrifuge tubes are respectively inserted into the first through holes 231, the second through holes 241 and the third through holes 251. The driving member 3 drives the rotating shaft 21 to rotate around its own axis, which can accelerate the sedimentation speed of the particles in the liquid in the centrifuge tube. When the work stops, the telescopic member 52 drives the limit block 51 to contact the locking block 53 relative to each other to limit the rotation of the rotating shaft 21.

[0036] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A centrifuge, comprising a machine body, a test tube rack and a driving member, wherein the machine body includes a base and a cover body, and the cover body is fixedly arranged on the top of the base; characterized in that, the test tube rack includes a rotating shaft, the rotating shaft is rotatably arranged in the cover body along the vertical direction, and a first tray, a second tray and a third tray are sequentially and spacedly fixed on the rotating shaft from bottom to top. The second tray is provided with a plurality of first through holes at circumferential intervals, and the third tray is provided with a plurality of second through holes at circumferential intervals. The inner diameters of the plurality of second through holes are different from those of the plurality of first through holes, and the orthographic projections of the plurality of second through holes on the second tray do not intersect with the plurality of first through holes; the driving member is arranged in the base and connected to the rotating shaft, and the driving member is used to drive the rotating shaft to rotate.

2. The centrifuge according to claim 1, wherein It further includes a fourth tray, the fourth tray is fixedly connected to the rotating shaft and is located above the third tray. A plurality of third through holes are formed in the fourth tray. The inner diameters of the plurality of third through holes are different from those of the plurality of first through holes and second through holes, and the orthographic projections of the plurality of third through holes on the third tray do not intersect with the plurality of second through holes.

3. A centrifuge according to claim 2, characterized in that, A plurality of first grooves are formed in the first tray, and the plurality of first grooves respectively correspond to the respective first through holes one by one.

4. A centrifuge according to claim 3, wherein, The second tray is provided with a plurality of second grooves, and the plurality of second grooves respectively correspond to the respective second through holes one by one.

5. A centrifuge according to claim 4, wherein, The third tray is provided with a plurality of third grooves, and the plurality of third grooves respectively correspond to the respective third through holes one by one.

6. The centrifuge according to claim 2, characterized in that, Limit sleeves are respectively arranged on the lower surface of the second tray corresponding to the respective first through holes, and the limit sleeves are formed by enclosing a plurality of elastic pressing pieces.

7. A centrifuge according to claim 1, characterized in that, A plurality of bull's eye bearings are arranged on the base, and the plurality of bull's eye bearings support the lower surface of the first tray.

8. A centrifuge according to claim 1, characterized in that, It further includes a locking unit, the locking unit includes a limit block, a telescopic member and a locking block. The limit block is fixedly arranged on the rotating shaft, the telescopic member is fixedly arranged in the base, and the output end of the telescopic member is connected to the locking block. The telescopic member can drive the locking block to abut against the limit block.

9. A centrifuge according to claim 2, characterized in that, The inner diameters of the first tray and the second tray are the same, the inner diameter of the second tray is larger than that of the third tray, and the inner diameter of the third tray is larger than that of the fourth tray.

10. A centrifuge according to claim 9, characterized in that, The inner diameter of the first through hole is smaller than that of the second through hole, and the inner diameter of the second through hole is smaller than that of the third through hole.

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