A dismounting device

Abstract

The utility model embodiment provides a kind of dismounting device, including body (1) and dismounting screw (2);Body (1) has through-hole (11);The inner wall of through-hole (11) is provided with thread, dismounting screw (2) passes through through-hole (11), and is engaged with body (1) by thread;Wherein, dismounting screw (2) abuts motor drive shaft rotation, to make and motor drive shaft connection, with the relative axial movement of the fixed component of body (1) and motor drive shaft.The body of the dismounting device of the utility model embodiment is fixed after component, dismounting screw passes through the through-hole on body, and abuts motor drive shaft, and dismounting screw is engaged with body by thread, and rotation dismounting screw makes component with body and motor drive shaft relative axial movement, and the component that is bonded on motor drive shaft is dismounted from motor drive shaft, and the dismounting device structure is simple, easy to operate, and can realize fast and effective dismounting.

Description

Technical Field

[0001] This utility model relates to the field of centrifuge technology, and in particular to a disassembly device. Background Technology

[0002] Centrifuges are instruments used for the separation of biological samples and are widely used in life sciences, medicine, chemistry, environmental protection, and other fields. A motor-driven shaft rotates various components and the biological sample locked to it at high speed to perform the centrifugation operation. Even after the components are released from the motor drive shaft following high-speed rotation, they may still become stuck or interlocked, making them difficult to separate. Examples include the rotor and drive connector mounted on the motor drive shaft. Utility Model Content

[0003] This utility model provides a disassembly device, which aims to solve the problem in the prior art that it is difficult to disassemble the parts that are bonded to the motor drive shaft after high-speed rotation.

[0004] In a first aspect, a disassembly device is provided, comprising a body (1) and disassembly screws (2). The body (1) has a through hole (11); The inner wall of the through hole (11) is provided with threads, and the disassembly screw (2) passes through the through hole (11) and engages with the body (1) through the threads; Among them, the disassembly screw (2) abuts against the motor drive shaft and rotates, so that the component connected to the motor drive shaft and fixed to the body (1) moves axially relative to the motor drive shaft.

[0005] After the body and components of the disassembly device in this embodiment are fixed, the disassembly screw passes through the through hole on the body and abuts against the motor drive shaft. The disassembly screw engages with the body through its thread. Rotating the disassembly screw causes the components to move axially relative to the body and the motor drive shaft, thereby removing the components bonded to the motor drive shaft. This disassembly device has a simple structure, is easy to operate, and can achieve fast and effective disassembly. Attached Figure Description

[0006] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the disassembly device provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the motor and rotor provided in an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the motor and rotor provided in an embodiment of this utility model; Figure 4 This is a schematic diagram of the rotor provided in an embodiment of the present utility model; Figure 5 This is a cross-sectional view of the rotor provided in an embodiment of the present utility model; Figure 6 This is another schematic diagram of the disassembly device provided in this embodiment of the utility model; Figure 7 This is a cross-sectional view of the disassembly device provided in an embodiment of the present invention; Figure 8 This is a bottom view of the disassembly device provided in this embodiment of the utility model; Figure 9 This is a cross-sectional view of the motor, rotor assembly, and disassembly device provided in this embodiment of the utility model; Figure 10 This is another cross-sectional view of the motor, rotor assembly, and disassembly device provided in this embodiment of the utility model; Figure 11 This is another cross-sectional view of the motor, rotor assembly, and disassembly device provided in this embodiment of the utility model; Figure 12 This is another schematic diagram of the disassembly device provided in this embodiment of the utility model. Detailed Implementation

[0007] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar modules or modules having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0008] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this embodiment of the invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0009] It should also be noted that when a component is referred to as "fixed to" or "located on" another component, it can be directly located on the other component or may be located in an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediate component.

[0010] During centrifugation, various components are locked to the motor drive shaft for high-speed rotation. For example, the rotor carrying the biological sample is locked to the motor drive shaft, and the drive connector is locked to the motor drive shaft to accommodate rotors of different structures. These components vary in structure and shape, but all require high-speed rotation, so they are typically symmetrical about the motor drive shaft or are rotating bodies. The structure of the disassembly device can be designed based on the radius of these components. The rotor is a component with a larger radius, while the drive connector is a component with a smaller radius.

[0011] After the body and components of the disassembly device in this embodiment are fixed, the disassembly screw passes through the through hole on the body and abuts against the motor drive shaft. The disassembly screw engages with the body through its thread. Rotating the disassembly screw causes the components to move axially relative to the body and the motor drive shaft, thereby removing the components bonded to the motor drive shaft. This disassembly device has a simple structure, is easy to operate, and can achieve fast and effective disassembly.

[0012] Figure 1 This is a schematic diagram of the disassembly device provided in an embodiment of this utility model. Figure 1 As shown, the disassembly device includes a body 1 and a disassembly screw 2. The body 1 has a through hole 11, and the inner wall of the through hole 11 is threaded. The disassembly screw 2 passes through the through hole 11 and engages with the body 1 through the thread. When it is necessary to disassemble a component bonded to the motor drive shaft, the body 1 is fixed to the component, so that the two cannot move relative to each other in the axial direction; the disassembly screw 2 rotates against the motor drive shaft, and the relative position of the disassembly screw 2 and the motor drive shaft in the axial direction remains unchanged. The body 1 and the disassembly screw 2 move relative to each other in the axial direction due to the threaded connection, that is, the component and the disassembly screw 2 move relative to each other in the axial direction, so that the component connected to the motor drive shaft and fixed to the body 1 moves relative to the motor drive shaft in the axial direction, and the component can be disassembled from the motor drive shaft.

[0013] For components with large radii, such as rotors, fixing them radially would result in a large volume of the body 1. In one embodiment of this invention, the body 1 is fixed to the component from the side furthest from the motor drive shaft, i.e., the body 1 is fixed to the component axially.

[0014] Figure 2 This is a schematic diagram of the motor and rotor provided in an embodiment of the present invention. Figure 3 This is a cross-sectional view of the motor and rotor provided in an embodiment of this utility model. Figure 4 This is a schematic diagram of the rotor provided in an embodiment of the present invention. Figure 5 This is a cross-sectional view of the rotor provided in an embodiment of this utility model. (Reference) Figures 2 to 5The rotor includes a rotor cover assembly and a rotor body assembly. The rotor cover assembly and rotor body assembly are shape-fitting rotating bodies. During centrifugation, the motor drive shaft passes through the central shaft of the rotor body assembly and is locked in place by a lock nut or other means. The test tube containing the biological sample to be centrifuged is placed into the rotor body assembly. After the rotor cover assembly is locked into the rotor body assembly, the motor drive shaft rotates to perform the centrifugation operation.

[0015] The outer circumference of the central shaft of the rotor body assembly is provided with threads or at least one groove. The rotor cover assembly includes a rotor cover and a cover nut. The cover nut is located on the central shaft of the rotor cover assembly, with its upper side serving as a gripping handle and its lower side being hollow. The rotor cover surrounds the cover nut. The inner wall of the lower side of the cover nut is provided with threads or at least one pin. The pin is fixed to the inner wall of the lower side of the cover nut by an interference fit. Correspondingly, if the outer circumference of the central shaft of the rotor body assembly is threaded, then the inner wall of the lower side of the cover nut is threaded; if the outer circumference of the central shaft of the rotor body assembly is grooved, then the inner wall of the lower side of the cover nut is provided with a pin. The threaded engagement or the groove engagement with the pin locks the rotor cover assembly to the rotor body assembly.

[0016] In this embodiment of the invention, a groove is provided on the outer periphery of the central shaft of the rotor body assembly, and a pin is provided on the inner wall below the rotating cover nut. The upper end of the groove is open, and the end of the groove is closed. A boss is provided on one side near the end of the groove. The pin enters the groove from the opening at the upper end of the groove. By rotating the rotor cover assembly, the pin passes the boss and is located at the end of the groove, thus locking the rotor body assembly and the rotor cover assembly. To ensure that the locking force of the rotor cover assembly and the rotor body assembly is balanced and stable when locked, preferably, three grooves are evenly provided on the outer periphery of the central shaft of the rotor body assembly. Correspondingly, three pins are evenly provided on the inner wall below the rotating cover nut.

[0017] Figure 6 This is another schematic diagram of the disassembly device provided in this embodiment of the utility model. Figure 7 This is a cross-sectional view of the disassembly device provided in an embodiment of the present invention. Figure 8 This is a bottom view of the disassembly device provided in an embodiment of this utility model. Figure 9 This is a cross-sectional view of the motor, rotor assembly, and disassembly device provided in an embodiment of this utility model. Figure 10 This is another cross-sectional view of the motor, rotor assembly and disassembly device provided in the embodiment of this utility model. Figure 11 This is another cross-sectional view of the motor, rotor assembly and disassembly device provided in the embodiment of this utility model.

[0018] refer to Figures 6 to 11The body 1 of the disassembly device includes a fixing block 12 and at least one pin 13 disposed on the inner wall of the fixing block 12. The at least one pin 13 can be fixedly connected to a groove on the component. When the component is a rotor, the pin 13 is fixedly connected to the groove on the outer periphery of the central shaft of the rotor body assembly, and is fixed to the rotor body assembly from the side of the rotor away from the motor drive shaft, that is, the fixing block 12 is fixed to the rotor body assembly from the axial side by the pin 13 (at this time, the rotor cover assembly has been removed from the rotor body assembly, and the locking between the motor drive shaft and the central shaft of the rotor body assembly has been released).

[0019] For ease of gripping, the fixing block 12 is a rotating body, with its upper side serving as a handle and its lower side being hollow. Pin 13 is fixed to the inner wall of the lower side of the fixing block 12 via an interference fit. Through hole 11 is located at the center of the fixing block 12 and is coaxial with it. The diameter of through hole 11 is smaller than the diameter of the area enclosed by the inner wall of the lower side of the fixing block 12. Removal screw 2 passes through through hole 11, into the central shaft of the rotor assembly, and abuts against the motor drive shaft. Rotating removal screw 2 causes the rotor assembly to gradually move upwards, changing its relative position with the motor drive shaft from... Figures 9 to 10 Then Figure 11 The two components move relative to each other axially, and the rotor assembly that is eventually bonded to the motor drive shaft can be removed from the motor drive shaft.

[0020] Preferably, the disassembly screw 2 includes a threaded section 21 and a smooth section 22. The threaded section 22 is located on the side of the smooth section 22 away from the motor drive shaft, and the smooth section 22 abuts against the motor drive shaft for rotation. The diameter of the smooth section 22 is smaller than the diameter of the threaded section 21 and also smaller than the diameter of the central hole of the lock nut. The smooth section 22 passes through the central shaft of the rotor assembly, through the lock nut, and abuts against the motor drive shaft.

[0021] When the outer circumference of the rotor body assembly's central shaft is threaded, the inner wall of the lower side of the rotor cover nut is also threaded, and the rotor body assembly and the rotor cover assembly are locked together by the threads. In this embodiment of the utility model, the body 1 is a rotating body, with its upper side serving as a gripping handle and its lower side being hollow. All or part of the inner wall of the lower side of the body 1 is threaded. The threads on the inner wall of the body 1 are fixedly connected to the threads on the outer circumference of the rotor body assembly's central shaft, that is, the body 1 is fixed to the rotor body assembly from the axial side by the threads (at this time, the rotor cover assembly has been removed from the rotor body assembly, and the locking between the motor drive shaft and the central shaft of the rotor body assembly has been released). The through hole 11 is located at the center of the body 1. The disassembly screw 2 passes through the through hole 11, enters the central shaft of the rotor body assembly, and abuts against the motor drive shaft. By rotating the disassembly screw 2, the rotor body assembly and the motor drive shaft move axially relative to each other, and finally the rotor body assembly bonded to the motor drive shaft is disassembled.

[0022] In this embodiment of the utility model, for components with a large radius, the body 1 is fixed to the component from the axial side, making the body 1 relatively compact overall.

[0023] In another embodiment of this utility model, for components with a small radius, such as drive connectors, the body 1 is fixed to the component in a direction perpendicular to the motor drive shaft, that is, the body 1 is fixed to the component from the radial side. Figure 12 This is another schematic diagram of the disassembly device provided in an embodiment of this utility model. (See diagram below.) Figure 12 As shown, the body 1 includes a first fixing plate 14 and a second fixing plate 15, and also includes a connecting plate 16 connecting the first fixing plate 14 and the second fixing plate 15. The first fixing plate 14 and the second fixing plate 15 fix the components so that the components and the body 1 will not move relative to each other in the axial direction. The through hole 11 is located in either the first fixing plate 14 or the second fixing plate 15.

[0024] The first fixing plate 14 and the second fixing plate 15 are respectively matched to the shapes of the upper and lower surfaces of the drive connector, clamping the drive connector axially and fixing it to the drive connector. (At this time, the locking between the motor drive shaft and the drive connector has been released). The removal screw 2 passes through the through hole 11, through the central shaft of the drive connector, and abuts against the motor drive shaft. Rotating the removal screw 2 causes the drive connector and the motor drive shaft to move axially relative to each other, finally removing the drive connector bonded to the motor drive shaft.

[0025] In this embodiment of the invention, for components with small radii, the body 1 clamps the component axially. Since high-speed rotation is required, the upper and lower surfaces of the component are mostly parallel horizontal planes. Therefore, the first fixing plate 14 and the second fixing plate 15 can be flat plates. The body 1 does not need to include pins, threads, or other shapes that precisely match the component, making the structure of the body 1 simpler.

[0026] After the body and components of the disassembly device in this embodiment are fixed, the disassembly screw passes through the through hole on the body and abuts against the motor drive shaft. The disassembly screw engages with the body through its thread. Rotating the disassembly screw causes the components to move axially relative to the body and the motor drive shaft, thereby removing the components bonded to the motor drive shaft. This disassembly device has a simple structure, is easy to operate, and can achieve fast and effective disassembly.

[0027] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A disassembly device, characterized in that, Includes the main body (1) and disassembly screws (2); The body (1) has a through hole (11); The inner wall of the through hole (11) is provided with threads, and the disassembly screw (2) passes through the through hole (11) and engages with the body (1) through the threads; The disassembly screw (2) abuts against the motor drive shaft and rotates, so that the component connected to the motor drive shaft and fixed to the body (1) moves axially relative to the motor drive shaft.

2. The apparatus according to claim 1, characterized in that, The body (1) is fixed to the component from the side of the component away from the motor drive shaft.

3. The apparatus according to claim 2, characterized in that, The body (1) includes a fixing block (12) and at least one pin (13) disposed on the inner wall of the fixing block (12). The at least one pin (13) is fixedly connected to the groove on the component.

4. The apparatus according to claim 3, characterized in that, The at least one pin (13) and the fixing block (12) are interference fits.

5. The apparatus according to claim 3, characterized in that, The through hole (11) is located at the center of the fixing block (12).

6. The apparatus according to claim 2, characterized in that, The inner wall of the body (1) is provided with threads in all or part of its inner wall; The threads on the inner wall of the body (1) are fixedly connected to the threads on the component.

7. The apparatus according to claim 1, characterized in that, The main body (1) is fixed to the component in a direction perpendicular to the motor drive shaft.

8. The apparatus according to claim 7, characterized in that, The main body (1) includes a first fixing plate (14) and a second fixing plate (15), and also includes a connecting plate (16) connecting the first fixing plate (14) and the second fixing plate (15). The through hole (11) is located on the first fixing plate (14) or the second fixing plate (15); The first fixing plate (14) and the second fixing plate (15) fix the component in the axial direction.

9. The apparatus according to any one of claims 1-8, characterized in that, The disassembly screw (2) includes a threaded section (21) and a smooth section (22); The smooth section (22) abuts against the motor drive shaft to rotate.

10. The apparatus according to claim 9, characterized in that, The diameter of the smooth section (22) is smaller than the diameter of the threaded section (21).

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