A rotor and a centrifuge having the same

Abstract

The embodiment of the present application provides a rotor, which comprises a rotor body assembly (1) and a rotor cover assembly (2); the outer periphery of the central axis of the rotor body assembly (1) is provided with at least one L-shaped slot (11), and a boss (12) is arranged on one side of each L-shaped slot (11); the inner wall of the rotor cover assembly (2) is provided with at least one pin (21); after the pin (21) enters the L-shaped slot (11) and passes over the boss (12), the rotor body assembly (1) and the rotor cover assembly (2) are locked. The embodiment of the present application sets the L-shaped slot with the boss on the outer periphery of the central axis of the rotor body assembly, sets the pin on the inner wall of the rotor cover assembly, and after the pin enters the L-shaped slot and passes over the boss, the rotor body assembly and the rotor cover assembly are locked, so that the operation is simple and effective, the operation burden of the experimenters is reduced, and the situation that a safety accident occurs due to the fact that locking is not in place is avoided.

Description

Technical Field

[0001] This invention relates to the field of centrifuge technology, and more particularly to a rotor and a centrifuge having the same. Background Technology

[0002] Centrifuges are instruments used for separating biological samples and are widely used in life sciences, medicine, chemistry, environmental protection, and other fields. The rotor is a crucial component of the centrifuge, mainly consisting of the rotor body assembly and the rotor cap assembly. It is used to secure the test tubes containing the biological samples to be centrifuged and to prevent the samples from splashing out. When the rotor rotates at high speed, the rotor body assembly and rotor cap assembly must be tightly locked together. No parts should impact the centrifuge chamber, and parts must not be allowed to fly out of the centrifuge chamber to avoid safety accidents.

[0003] Typically, the rotor body assembly and rotor cover assembly use a traditional threaded connection. This type of connection requires several turns to ensure that the two are locked together, which is cumbersome and complicated. If not tightened properly, the rotor cover assembly may loosen when the rotor is rotating at high speed, potentially causing a safety accident. Summary of the Invention

[0004] This invention provides a rotor designed to solve the problem of cumbersome and complicated operation when locking the rotor cover assembly and rotor body assembly in the prior art.

[0005] In a first aspect, a rotor is provided, including a rotor body assembly (1) and a rotor cover assembly (2).

[0006] The outer periphery of the central shaft of the rotor body assembly (1) is provided with at least one L-shaped groove (11), and a boss (12) is provided on one side of each L-shaped groove (11); the inner wall of the rotor cover assembly (2) is provided with at least one pin (21); after the pin (21) enters the L-shaped groove (11) and passes over the boss (12), the rotor body assembly (1) and the rotor cover assembly (2) are locked together.

[0007] In a second aspect, a centrifuge is provided, including a motor, a drive shaft, a centrifuge chamber, and a rotor as described above.

[0008] In this embodiment of the invention, an L-shaped groove with a boss is provided on the outer periphery of the central shaft of the rotor body assembly, and a pin is provided on the inner wall of the rotor cover assembly. After the pin enters the L-shaped groove and passes the boss, the rotor body assembly and the rotor cover assembly are locked together. The operation is simple and effective, reducing the operational burden of the experimental personnel and avoiding safety accidents caused by inadequate locking. Attached Figure Description

[0009] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0010] Figure 1 This is a cross-sectional view of the rotor in an unlocked state provided in Embodiment 1 of the present invention;

[0011] Figure 2 This is a cross-sectional view of the rotor in the locked state provided in Embodiment 1 of the present invention;

[0012] Figure 3 This is a cross-sectional view of the rotor cover assembly provided in Embodiment 1 of the present invention;

[0013] Figure 4 This is a cross-sectional view of the rotor body assembly provided in Embodiment 1 of the present invention;

[0014] Figure 5 This is a schematic diagram of the rotor connector provided in Embodiment 1 of the present invention;

[0015] Figure 6 This is a schematic diagram of the centrifuge provided in Embodiment 2 of the present invention. Detailed Implementation

[0016] Embodiments of the present invention are described in detail below, examples of which are illustrated 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 the present invention, and should not be construed as limiting the present invention. Rather, embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0017] Centrifugation is a common and frequent operation in the laboratory. The locking between the rotor body assembly and the rotor cover assembly should not be too complicated. Otherwise, the experimenter may make omissions or oversights during the complicated operation, resulting in the rotor body assembly and the rotor cover assembly not being locked in place, which may easily cause a safety accident.

[0018] In this embodiment of the invention, an L-shaped groove with a boss is provided on the outer periphery of the central shaft of the rotor body assembly, and a pin is provided on the inner wall of the rotor cover assembly. After the pin enters the L-shaped groove and passes the boss, the rotor body assembly and the rotor cover assembly are locked together. The operation is simple and effective, reducing the operational burden of the experimental personnel and avoiding safety accidents caused by inadequate locking.

[0019] Example 1

[0020] Figure 1 This is a cross-sectional view of the rotor in an unlocked state provided in Embodiment 1 of the present invention. Figure 2 This is a cross-sectional view of the rotor in the locked state provided in Embodiment 1 of the present invention. Figure 3 This is a cross-sectional view of the rotor cover assembly provided in Embodiment 1 of the present invention. Figure 4 This is a cross-sectional view of the rotor assembly provided in Embodiment 1 of the present invention. Figure 5 This is a schematic diagram of the rotor connector provided in Embodiment 1 of the present invention. (In conjunction with...) Figures 1 to 5 The rotor includes a rotor body assembly 1 and a rotor cover assembly 2. The rotor body assembly 1 and the rotor cover assembly 2 are shape-fitting rotating bodies. During centrifugation, the rotor body assembly 1 is fixed on the drive shaft (not shown in the figure), and then a test tube containing the biological sample to be centrifuged (not shown in the figure) is placed into the rotor body assembly 1. After the rotor cover assembly 2 is locked onto the rotor body assembly 1, the drive shaft rotates to perform the centrifugation operation.

[0021] The outer periphery of the central shaft of the rotor body assembly 1 is provided with at least one L-shaped groove 11. The upper end of the vertical portion of the L-shaped groove is open, allowing a matching pin to enter the L-shaped groove 11 through the opening. The end of the horizontal portion of the L-shaped groove 11 is closed. A boss 12 is provided on one side of the horizontal portion of each L-shaped groove 11 near the end. Preferably, the rotor body assembly 1 includes a rotor body 13 and a rotor connector 14. The rotor connector 14 is located on the central shaft of the rotor body assembly 1, and the rotor body 13 is the portion surrounding the rotor connector 14. In this embodiment of the invention, the L-shaped groove 11 is provided on the outer periphery of the rotor connector 14. The rotor body 13 and the rotor connector 14 are fixed together by screws 16. A third sealing ring 17 is provided near the screws 16, in the groove of the rotor connector 14, i.e., at the connection between the rotor body 13 and the rotor connector 14.

[0022] At least one pin 21 is provided on the inner wall of the center of the rotor cover assembly 2. The pin 21 enters the L-shaped groove 11 through the opening at the upper end of the vertical part of the L-shaped groove and rests at the lower end of the vertical part of the L-shaped groove. The experimenter rotates the rotor cover assembly 2, causing the pin 21 to slide along the horizontal part of the L-shaped groove. After the pin 21 passes the boss 12, it is located at the end of the horizontal part of the L-shaped groove, locking the rotor body assembly 1 and the rotor cover assembly 2. Thus, the experimenter can lock the rotor cover assembly 2 in less than one turn. When the pin 21 passes the boss 12, a "click" locking prompt sound will be emitted, indicating that the rotor is in the locked state, making it less likely for the experimenter to miss or overlook it during operation.

[0023] To ensure a balanced and stable locking force when the rotor body assembly 1 and rotor cover assembly 2 are locked, preferably, three L-shaped grooves 11 are evenly distributed around the outer periphery of the rotor joint 14. Correspondingly, three pins 21 are evenly distributed on the inner wall of the center of the rotor cover assembly 2. The experimenter can lock the rotor cover assembly 2 by rotating it about one-third of a turn.

[0024] In one embodiment of the present invention, the rotor cover assembly 2 includes a rotor cover 22, a rotating cover nut 23, a first sealing ring 24, and a first washer 26. The rotating cover nut 23 is located on the central axis of the rotor cover assembly 2, with its upper side serving as a gripping handle and its lower side being hollow. A pin 21 is fixed in a hole in the lower sidewall of the rotating cover nut 23 by an interference fit. The rotor cover 22 surrounds the rotating cover nut 23. The rotor cover 22 and the rotating cover nut 23 are clearance-fitted and can rotate relative to each other. The first washer 26 is disposed between the rotor cover 22 and the rotating cover nut 23 and cannot move. The second washer 28 is fixed by a retaining ring 29 and cannot move. The first sealing ring 24 is engaged in the top groove of the rotating cover nut 23 and can move slightly up and down and rotate, possessing a certain degree of elasticity.

[0025] In one embodiment of the present invention, the width of the horizontal portion of the L-shaped groove 11 and the width of the end of the horizontal portion of the L-shaped groove 11 are both equal to the diameter of the pin 21. After the pin 21 enters the horizontal portion of the L-shaped groove 11, the first sealing ring 24 abuts against the upper end of the rotor joint 14 and is in a compressed state. The experimenter rotates the rotor cover assembly 2 so that the pin 21 passes over the boss 12, and the rotor body assembly 1 and the rotor cover assembly 2 are locked.

[0026] In another embodiment of the present invention, the width of the horizontal portion of the L-shaped groove 11 is slightly larger than the diameter of the pin 21, the width of the end of the horizontal portion of the L-shaped groove 11 is equal to the diameter of the pin 21, and the upper edge of the end of the horizontal portion of the L-shaped groove 11 is slightly lower than the upper edge of the horizontal portion of the L-shaped groove 11. When the experimenter rotates the rotor cover assembly 2, the pin 21 slides along the horizontal portion of the L-shaped groove 11, and the first sealing ring 24 contacts and slides with the upper end of the rotor joint 14. When the pin 21 has not passed the boss 12, the first sealing ring 24 is in a relaxed state; after the pin 21 passes the boss 12, the first sealing ring 24 tightly abuts against the upper end of the central shaft of the rotor body assembly 1, that is, against the upper end of the rotor joint 14, and is in a compressed state, thus locking the rotor body assembly 1 and the rotor cover assembly 2.

[0027] When the first sealing ring 24 is in a compressed state, it provides axial preload, making it difficult for the pin 21 to reverse and cross the boss 12, thereby playing a role in locking and preventing loosening.

[0028] In this embodiment of the invention, the rotor cover assembly 2 further includes a washer 25, which is engaged in the top groove of the rotor cover nut 23, so that the first sealing ring 24 is located between the top of the rotor cover nut 23 and the washer 25, and can move up and down slightly and rotate to prevent the first sealing ring 24 from falling off.

[0029] In this embodiment of the invention, the rotor cover assembly 2 further includes a second sealing ring 27. The second sealing ring 27 is engaged and fixed in a groove on the edge of the rotor cover 22. When the rotor body assembly 1 and the rotor cover assembly 2 are locked, the gap between the edge of the rotor cover 22 and the edge of the rotor body 13 is sealed by the second sealing ring 27.

[0030] In this embodiment of the invention, an L-shaped groove with a boss is provided on the outer periphery of the central shaft of the rotor body assembly, and a pin is provided on the inner wall of the rotor cover assembly. After the pin enters the L-shaped groove and passes the boss, the rotor body assembly and the rotor cover assembly are locked together. The operation is simple and effective, reducing the operational burden of the experimental personnel and avoiding safety accidents caused by inadequate locking.

[0031] Example 2

[0032] Figure 6 This is a schematic diagram of the centrifuge provided in Embodiment 2 of the present invention. Figure 6 As shown, the centrifuge includes a motor, a drive shaft, a centrifuge chamber, and a rotor as described in Embodiment 1. In this embodiment of the invention, the rotor has the same structure as in Embodiment 1, and the components that are the same as in Embodiment 1 use the same reference numerals as in Embodiment 1, including all the features described in Embodiment 1, which will not be repeated here.

[0033] Combination Figure 2 , Figure 4 and Figure 6 The rotor assembly 1 also includes a drive shaft locking nut 15 located on the central shaft. The drive shaft passes through the bottom of the centrifuge chamber and is connected to the central shaft of the rotor assembly 1. As an embodiment of the present invention, the rotor is locked onto the drive shaft by the drive shaft locking nut 15 and the disc spring 18. Then, a test tube (not shown in the figure) containing the biological sample to be centrifuged is placed into the rotor assembly 1. After the rotor cover assembly 2 is locked onto the rotor assembly 1, the centrifuge door is closed, so that the rotor is located in the sealed centrifuge chamber, and the motor drives the drive shaft to rotate to perform the centrifugation operation.

[0034] In this embodiment of the invention, an L-shaped groove with a boss is provided on the outer periphery of the central shaft of the rotor body assembly, and a pin is provided on the inner wall of the rotor cover assembly. After the pin enters the L-shaped groove and passes the boss, the rotor body assembly and the rotor cover assembly are locked together. The operation is simple and effective, reducing the operational burden of the experimental personnel and avoiding safety accidents caused by inadequate locking.

[0035] 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 rotor, characterized in that, Includes rotor body assembly (1) and rotor cover assembly (2); The outer periphery of the central shaft of the rotor body assembly (1) is provided with at least one L-shaped groove (11), and a boss (12) is provided on one side of each L-shaped groove (11). The inner wall of the rotor cover assembly (2) is provided with at least one pin (21). After the pin (21) enters the L-shaped groove (11) and passes the boss (12), the rotor body assembly (1) and the rotor cover assembly (2) are locked together. The rotor cover assembly (2) also includes a rotor cover (22), a cover nut (23) and a first sealing ring (24), the first sealing ring (24) being engaged in the top groove of the cover nut (23) and the pin (21) being fixed in the hole of the cover nut (23); The rotor cover assembly (2) also includes a washer (25) and a first gasket (26). The washer (25) is engaged in the top groove of the rotating cap nut (23), such that the first sealing ring (24) is located between the top of the rotating cap nut (23) and the washer (25); The rotor cover (22) and the rotor cover nut (23) are clearance fit, and the first gasket (26) is disposed between the rotor cover (22) and the rotor cover nut (23); After the rotor body assembly (1) and the rotor cover assembly (2) are locked, the first sealing ring (24) abuts against the upper end of the central shaft of the rotor body assembly (1) to provide axial preload.

2. The rotor according to claim 1, characterized in that, When the pin (21) passes the boss (12), a locking prompt sound is emitted.

3. The rotor according to claim 1, characterized in that, The pin (21) is fixed in the hole on the side wall of the rotating nut (23) by an interference fit.

4. The rotor according to claim 1, characterized in that, The rotor cover assembly (2) also includes a second sealing ring (27), which is engaged in a groove on the edge of the rotor cover (22).

5. The rotor according to claim 1, characterized in that, The rotor assembly (1) further includes a rotor body (13) and a rotor connector (14), the rotor connector (14) being located on the central axis of the rotor assembly (1); the rotor body (13) and the rotor connector (14) are fixed by screws (16).

6. The rotor according to claim 1, characterized in that, There are 3 L-shaped grooves (11) and 3 pins (21).

7. A centrifuge, characterized in that, The centrifuge includes a motor, a drive shaft, a centrifuge chamber, and a rotor as described in any one of claims 1-6; The rotor assembly (1) also includes a drive shaft locking nut (15). The drive shaft passes through the bottom of the centrifuge chamber, and the rotor is locked on the drive shaft by the drive shaft locking nut (15), so that the rotor is located in the centrifuge chamber, and the motor drives the drive shaft to rotate to perform centrifugation operation.

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