Table type micro high-speed centrifugal machine

Abstract

The utility model relates to the technical field of high-speed centrifugal machines, in particular to a table type micro high-speed centrifugal machine which comprises a machine body with a rotating chamber formed in the middle and a turning cover rotationally connected to the upper end of the machine body, a rotating shaft is rotationally connected to the middle of the rotating chamber, and a centrifugal disc and an I-shaped connecting column are detachably connected to the upper end of the rotating shaft; the centrifugal disc and the rotating shaft are inserted into the I-shaped connecting column at the same time, the I-shaped connecting column comprises a head part, a shaft part and a hook part which are connected, a deformation hole extending to the shaft part is formed in the lower end of the hook part, the lower end face of the head part abuts against the upper end face of the centrifugal disc, and the hook part is fixedly inserted into the rotating shaft. The centrifugal machine has the effect of improving the mounting stability of the detachable centrifugal disc in the centrifugal machine.

Description

Technical Field

[0001] The present application relates to the technical field of high-speed centrifuges, and in particular to a desktop micro high-speed centrifuge. Background Art

[0002] High-speed centrifuge is a conventional laboratory centrifuge with a high rotation speed and strong centrifugal force. It is an effective preparation instrument for separating, concentrating, refining and extracting suspended substances in sample solutions for high purity for research. It is widely used in chemistry, biology, medicine, pharmacology, agricultural science and other fields.

[0003] Different experiments may require the use of centrifuge tubes of different specifications and sizes. In practice, some sample solutions that are easy to settle can be placed in large-size centrifuge tubes for centrifugation to reduce the number of centrifugation times required to obtain the target gram sample, thereby shortening the experimental time and improving the experimental efficiency. However, in existing desktop micro-high-speed centrifuges, the centrifuge disk model is often fixed to match the centrifuge model, and the size of the insertion port on the centrifuge disk for the centrifuge tube to be inserted is fixed, which cannot meet the actual needs well.

[0004] In order to solve the above problems, a Chinese patent with publication number CN218250866U discloses a desktop micro-experiment centrifuge, in which the centrifugal disc is detachably connected to a rotatable connecting column, and is fixed by a quick disassembly device that inserts the centrifugal disc and the connecting column from top to bottom. The quick disassembly device includes two symmetrical and oppositely arranged blocks, and a spreading spring is arranged between the two blocks. The block is L-shaped. When the quick disassembly device is installed on the connecting column, the lower end of the block is connected to the slot inside the connecting column, and the upper end of the block extends out of the upper end surface of the centrifugal disc. The side wall of the block abuts against the slide groove in the connecting column under the action of the spreading spring. The user can pinch the upper ends of the two blocks to compress the spring, thereby removing the quick disassembly device from bottom to top to achieve the replacement of the centrifugal disc.

[0005] However, in the above-mentioned quick disassembly and assembly device, the block is fixed to the connecting column through a card slot, but is only fixed to the centrifugal disk through the friction force of the side wall of the block. When the centrifuge rotates at high speed, there is a risk of the centrifugal disk detaching, and there is still room for improvement. Utility Model Content

[0006] In order to improve the installation stability of a detachable centrifugal disk in a centrifuge, the present application provides a desktop micro high-speed centrifuge.

[0007] The present application provides a desktop micro high-speed centrifuge adopts the following technical solution:

[0008] A desktop micro high-speed centrifuge comprises a body with a rotating chamber formed in the middle, and a flip cover rotatably connected to one side of the upper end of the body, the body is rotatably connected to a rotating shaft in the middle of the rotating chamber, and the upper end of the rotating shaft is detachably connected to a centrifugal disk and an I-shaped connecting column; an upper plug-in hole is formed through the middle of the centrifugal disk, a lower plug-in hole is formed at the upper end of the rotating shaft, and the upper plug-in hole and the lower plug-in hole are simultaneously inserted into the I-shaped connecting column, the I-shaped connecting column comprises a connected head, a shaft and a hook, and a deformation hole extending to the shaft is formed at the lower end of the hook, the lower end surface of the head abuts against the upper end surface of the centrifugal disk, the outer periphery of the shaft fits against the hole wall of the lower plug-in hole, and the hole wall of the lower plug-in hole is provided with a limiting groove for the hook to be inserted.

[0009] By adopting the above technical solution, a centrifugal disk of required specifications is selected, inserted on the rotating shaft, and an I-shaped connecting column is inserted. In addition to using the friction between the shaft and the upper and lower insertion holes to assist in fixation, the head is abutted and fixed with the centrifugal disk, and the hook is clamped and fixed with the rotating shaft. The upper and lower ends are locked, and multiple locking is performed, which improves the reliability and stability of the installation, reduces the probability of the centrifugal disk being separated from the rotating shaft due to high-speed rotation, and also improves the safety of the instrument.

[0010] Optionally, a guiding slope is provided at the upper end of the hook portion, and the middle portion of the hook portion gradually tilts downward toward the outer side of the hook portion to form the guiding slope.

[0011] By adopting the above technical solution, the setting of the guiding slope improves the convenience of inserting the I-shaped connecting column.

[0012] Optionally, the hole wall of the upper insertion hole and the hole wall of the lower insertion hole are both provided with a shallow groove for the hook to deform and slide down.

[0013] By adopting the above technical solution, the user can first align the I-shaped connecting column with the shallow groove and press it down to the bottom. At this time, the shaft is deformed inwardly, and then the I-shaped connecting column is rotated until the hook is inserted into the limiting groove, the deformation of the shaft is restored, and the hook is engaged; the opening of the shallow groove reduces the degree of inward deformation required when the shaft slides down, reduces the probability of shaft breakage, and controls the depth of the shallow groove at the same time, so that the hook is not easy to detach from the shallow groove when the centrifuge is working.

[0014] Optionally, the I-shaped connecting column is laterally provided with a spring in the deformation hole, and the spring drives the shaft portion to always have a tendency to deform outward.

[0015] By adopting the above technical solution, the spring drives the shaft to always have a tendency to deform outward, thereby increasing the force of the shaft abutting against the hole walls of the upper and lower insertion holes, further reducing the probability of shaft rotation and improving the stability of installing the centrifugal disk using the I-shaped connecting column.

[0016] Optionally, a handle is connected to the upper end of the head.

[0017] By adopting the above technical solution, the arrangement of the handle makes it convenient for the user to pull out and rotate the I-shaped connecting column.

[0018] Optionally, the handle is arc-shaped.

[0019] By adopting the above technical solution, the space of the rotation chamber in the desktop micro high-speed centrifuge is limited, and the centrifuge tubes are actually inserted around the I-shaped connecting column at intervals, and the arc-shaped handle requires less space, thereby reducing the impact of the handle setting on the loading and unloading of the centrifuge tubes.

[0020] Optionally, the upper end of the centrifugal disc is provided with a receiving area for the head to be embedded.

[0021] By adopting the above technical solution, after the I-shaped connecting column is inserted, the head is embedded in the accommodating area, and the head is limited by the groove wall of the accommodating area, thereby further improving the stability of installing the centrifugal disc.

[0022] Optionally, the rotating shaft is a double-layer tube with an inserted annular groove formed in the middle, and the inserted annular groove is inserted at the lower end of the centrifugal disk.

[0023] By adopting the above technical solution, when rotating at high speed, the setting of the double-layer tube strengthens the guiding effect on the centrifugal disc, making the rotation of the centrifugal disc more stable.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The present application designs the structure of the I-shaped connecting column. In addition to using the friction between the shaft and the upper and lower insertion holes to assist in fixing, the head is fixed by abutting against the centrifugal disk, and the hook is fixed by clamping with the rotating shaft. The upper and lower ends are locked, and the multi-party locking is performed to improve the reliability and stability of the installation, reduce the probability of the centrifugal disk being separated from the rotating shaft due to high-speed rotation, and also improve the safety of the instrument;

[0026] 2. The present application provides a spring to drive the shaft to always have a tendency to deform outward, thereby increasing the force of the shaft abutting against the hole walls of the upper and lower insertion holes, further reducing the probability of the shaft rotating, and improving the stability of installing the centrifugal disc using the I-shaped connecting column;

[0027] 3. The present application provides a handle to facilitate the user to pull out and rotate the I-shaped connecting column. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the desktop micro high-speed centrifuge according to an embodiment of the present application.

[0029] Figure 2It is a schematic diagram of the coordination of the body, flip cover and rotating shaft of the embodiment of the present application.

[0030] Figure 3 It is a schematic diagram of the structure of an I-shaped connecting column in an embodiment of the present application.

[0031] Figure 4 It is a cross-sectional view of a desktop micro high-speed centrifuge according to an embodiment of the present application.

[0032] Explanation of the accompanying drawings: 1. Body; 11. Rotating chamber; 2. Flip cover; 3. Rotating axis; 31. Insertion ring groove; 32. Lower insertion hole; 33. Limiting groove; 34. Shallow groove; 4. Centrifugal disk; 41. Sample port; 42. Upper insertion hole; 43. Accommodating area; 5. I-shaped connecting column; 51. Head; 52. Shaft; 53. Hook; 531. Guide slope; 54. Handle; 55. Deformation hole; 6. Spring. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] The present application embodiment discloses a desktop micro high-speed centrifuge. Figure 1 and Figure 2 The desktop micro high-speed centrifuge includes a body 1 with a rotating chamber 11 formed in the middle, a flip cover 2 rotatably connected to one side of the upper end of the body 1 through a rotating shaft, and the body 1 is rotatably connected to a rotating shaft 3 in the middle of the rotating chamber 11. The body 1 structure, the rotating connection structure of the flip cover 2 and the body 1, and the rotating connection structure of the rotating shaft 3 and the body 1 are all common means in the field and will not be described in detail here.

[0035] The rotating shaft 3 is a double-layer tube with an insertion annular groove 31 formed in the middle. The upper end of the rotating shaft 3 is detachably connected to a centrifugal disk 4. The disk surface of the centrifugal disk 4 is circumferentially spaced apart with a plurality of sample ports 41 for inserting centrifugal tubes. The lower end of the centrifugal disk 4 is inserted with an insertion annular groove 31, and is tightly fitted with the groove wall of the insertion annular groove 31.

[0036] A deformable I-shaped connecting column 5 is detachably connected to the middle of the centrifugal disc 4 , and a receiving area 43 for embedding the upper end portion of the I-shaped connecting column 5 is provided at the upper end of the centrifugal disc 4 .

[0037] Reference Figure 3 The I-shaped connecting column 5 includes a head 51, a shaft 52 and a hook 53 which are integrally formed from top to bottom. The upper end of the head 51 is integrally formed with an arc handle 54, and the lower end of the hook 53 is provided with a deformation hole 55 extending to the shaft 52. The upper end of the hook 53 is machined with a guide slope 531, and the hook 53 gradually tilts downward from the middle to the outside thereof, and forms the guide slope 531.

[0038] In addition, a spring 6 is laterally bonded to the I-shaped connecting column 5 in the deformation hole 55 . The spring 6 is in a compressed state, and both ends of the spring 6 drive the shaft portion 52 to always have a tendency to deform outward.

[0039] Reference Figure 2 and Figure 4 The centrifugal disc 4 is provided with an upper insertion hole 42 in the middle, and the upper end of the rotating shaft 3 is provided with a lower insertion hole 32. The upper insertion hole 42 is connected to and coaxial with the lower insertion hole 32. The hole wall of the lower insertion hole 32 is provided with a limiting groove 33 for the hook 53 to be inserted. The hole wall of the upper insertion hole 42 and the hole wall of the lower insertion hole 32 are both provided with a shallow groove 34 for the hook 53 to deform and slide down. The depth of the shallow groove 34 is less than the depth of the limiting groove 33. Both the limiting groove 33 and the shallow groove 34 are provided with two symmetrical positions with the axis of the rotating shaft as the axis, and the limiting groove 33 is provided in the clockwise direction of the shallow groove 34.

[0040] When the centrifugal disc 4 is installed, the I-shaped connecting column 5 is deformed and inserted into the upper insertion hole 42 and the lower insertion hole 32 from top to bottom. After the deformation is restored, the lower end surface of the head 51 abuts against the upper end surface of the centrifugal disc 4, and the outer periphery of the shaft 52 fits against the hole wall of the lower insertion hole 32.

[0041] The implementation principle of a desktop micro high-speed centrifuge in the embodiment of the present application is as follows: a centrifugal disc 4 of required specifications is selected, inserted on the rotating shaft 3, and an I-shaped connecting column 5 is inserted. The I-shaped connecting column 5 can be first aligned with the shallow groove 34 and pressed down to the bottom, at which time the shaft 52 and the hook 53 are both deformed inward, and then the I-shaped connecting column 5 is rotated clockwise, and the shaft 52 and the hook 53 continue to deform inward until the hook 53 is inserted into the limiting groove 33, at which time the deformation of the shaft 52 is restored, the hook 53 is engaged with the rotating shaft 3, and the head 51 is partially embedded in the accommodating area 43.

[0042] When the centrifugal disc 4 needs to be replaced, the handle 54 is pinched to rotate the I-shaped connecting column 5 counterclockwise until the hook portion 53 abuts against the shallow groove 34 , and the I-shaped connecting column 5 is pulled out along the shallow groove 34 in the reverse direction.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A desktop micro high-speed centrifuge, characterized in that: The invention comprises a body (1) with a rotating chamber (11) formed in the middle, and a flip cover (2) rotatably connected to one side of the upper end of the body (1); the body (1) is rotatably connected to a rotating shaft (3) in the middle of the rotating chamber (11); the upper end of the rotating shaft (3) is detachably connected to a centrifugal disc (4) and an I-shaped connecting column (5); an upper plug-in hole (42) is formed through the middle of the centrifugal disc (4); a lower plug-in hole (32) is formed at the upper end of the rotating shaft (3); and the I-shaped connecting column (5) is simultaneously plugged into the upper plug-in hole (42). 42) and the lower insertion hole (32), the I-shaped connecting column (5) comprises a head portion (51), a shaft portion (52) and a hook portion (53) which are connected to each other, and the lower end of the hook portion (53) is provided with a deformation hole (55) extending to the shaft portion (52), the lower end surface of the head portion (51) abuts against the upper end surface of the centrifugal disk (4), the outer periphery of the shaft portion (52) is fitted with the hole wall of the lower insertion hole (32), and the hole wall of the lower insertion hole (32) is provided with a limiting groove (33) for the hook portion (53) to be inserted.

2. A desktop micro high-speed centrifuge according to claim 1, characterized in that: The upper end of the hook portion (53) is provided with a guiding inclined surface (531), and the middle portion of the hook portion (53) gradually tilts downward toward the outer side of the hook portion (53) to form the guiding inclined surface (531).

3. A desktop micro high-speed centrifuge according to claim 2, characterized in that: The hole wall of the upper insertion hole (42) and the hole wall of the lower insertion hole (32) are both provided with a shallow groove (34) for the hook portion (53) to deform and slide down.

4. A desktop micro high-speed centrifuge according to claim 2, characterized in that: The I-shaped connecting column (5) is provided with a spring (6) transversely in the deformation hole (55), and the spring (6) drives the shaft portion (52) to always have a tendency to deform outward.

5. A desktop micro high-speed centrifuge according to claim 4, characterized in that: The upper end of the head (51) is connected to a handle (54).

6. A desktop micro high-speed centrifuge according to claim 5, characterized in that: The handle (54) is in an arc shape.

7. A desktop micro high-speed centrifuge according to claim 5, characterized in that: The upper end of the centrifugal disc (4) is provided with a receiving area (43) for the head (51) to be embedded.

8. A desktop micro high-speed centrifuge according to any one of claims 2 to 7, characterized in that: The rotating shaft (3) is a double-layer tube with an insertion annular groove (31) formed in the middle, and the insertion annular groove (31) is inserted at the lower end of the centrifugal disc (4).

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