A novel centrifuge angle rotor structure

Abstract

This application discloses a novel centrifuge angular rotor structure, relating to the field of centrifuge technology. It includes: an angular rotor body with a central hole; several centrifuge cavities circumferentially inclined at a certain angle to the central axis on the angular rotor body; an annular sealing groove inside the central hole; an annular mounting groove inside the annular sealing groove; several spheres disposed within the annular mounting groove; a sealing element disposed within the annular sealing groove; and a sealing mandrel for connection with the centrifuge shaft disposed within the central hole. This solves the problems existing in current angular rotors, reduces manufacturing difficulty and material density consistency requirements, eliminates the requirement for full dynamic balancing, and reduces the precision requirement for accurate balancing of samples on both sides during dynamic balancing tests, thereby improving the overall operational stability.

Description

Technical Field

[0001] This application relates to the field of centrifuge technology, and in particular to a novel centrifuge angular rotor structure. Background Technology

[0002] A centrifuge is a machine that uses centrifugal force to separate the components of a liquid from solid particles or a mixture of liquids. The centrifuge rotor is a key working component of the centrifuge; an angle rotor refers to a rotor in which the centrifuge tubes are at a certain angle to the shaft. It is made of a single piece of metal with several mechanically designed cavities for holding centrifuge tubes, i.e., the centrifuge tubes.

[0003] The dynamic balance performance of existing angle rotors under no-load conditions is mainly guaranteed by the precision of machining and the uniformity of the density of the selected materials. After the angle rotor is completed, special equipment is needed to perform dynamic balance tests to see if it is within the set range.

[0004] Current technology places high demands on material consistency and processing precision. After manufacturing, dynamic balance testing is required. If the dynamic balance requirements are not met, material removal is necessary to ensure that the dynamic balance meets the initial settings. This places high demands on manufacturing and delivery, and dynamic balance cannot be dynamically adjusted during use. Utility Model Content

[0005] To address the aforementioned problems, reduce manufacturing difficulty and material density consistency requirements, eliminate the need for full inspection and dynamic balancing, and reduce the precision requirement for accurate balancing of samples on both sides during dynamic balancing tests, thereby improving overall operational stability, this application provides a novel centrifuge angular rotor structure.

[0006] The present application provides a novel centrifuge angular rotor structure using the following technical solution.

[0007] A novel centrifuge angular rotor structure includes: an angular rotor body with a central hole; a plurality of centrifuge cavities with a certain angle to the central axis are formed circumferentially on the angular rotor body; an annular sealing groove is formed inside the central hole; an annular mounting groove is formed inside the annular sealing groove; a plurality of spheres are arranged in the annular mounting groove; a sealing element is arranged in the annular sealing groove; and a sealing mandrel for connecting with the centrifuge shaft is arranged in the central hole.

[0008] By adopting the above technical solution, several spheres can be placed within the annular mounting groove through its opening. The annular mounting groove is sealed by sealing elements and a sealing mandrel within the sealing groove. During rotation, the spheres change position within the annular mounting groove, adjusting their positions according to changes in rotational speed, load, or imbalance. Dynamic automatic balancing is achieved without manual intervention. The spheres within the annular mounting groove experience centrifugal force, moving towards areas with larger rotation radii. If the rotor has mass eccentricity, vibration will cause the spheres within the annular mounting groove to gradually gather on the side opposite to the imbalance position, forming a counterweight. This balances the centrifugal force difference, achieving dynamic balance adjustment and improving overall operational stability.

[0009] Optionally, the annular sealing groove has a rectangular cross-section.

[0010] By adopting the above technical solution, the rectangular cross-section has a large area, and the sealing element in the annular sealing groove can effectively cover the annular mounting groove, ensuring a good sealing effect.

[0011] Optionally, the annular mounting groove is filled with liquid.

[0012] By adopting the above technical solution, a viscous liquid can be used. Through the liquid's design, high-frequency vibrations can be absorbed: when the viscous liquid flows within the annular mounting groove, it dissipates vibrational energy through internal friction (viscous resistance), thereby suppressing high-frequency vibrations or resonance. Stable motion is achieved: the liquid slows down the response speed of the balancing medium (such as a freely moving sphere or the liquid itself), preventing system overshoot or oscillation due to rapid movement. Dynamic mass compensation: the viscous liquid acts directly as the balancing medium; when the equipment rotates, the liquid flows towards the lighter side due to centrifugal force, forming a dynamic counterweight to offset unbalanced torques. Adaptability to complex working conditions: the liquid can fill any position in the annular mounting groove, providing more flexible response to uneven mass distribution, especially in scenarios with frequent speed changes, for temperature and load compensation.

[0013] Optionally, the cross-section of the annular mounting groove is U-shaped.

[0014] By adopting the above technical solution, the U-shaped structure is more conducive to the free movement of the sphere within the annular mounting groove.

[0015] Optionally, the diameter of the sphere is 0.1 mm smaller than the diameter of the annular mounting groove.

[0016] By adopting the above technical solution, the diameter of the sphere should be slightly smaller than the diameter of the annular mounting groove, and needs to be adjusted according to the diameter of the sphere and the viscosity of the selected liquid.

[0017] Optionally, the sealing mandrel has several countersunk holes, and the sealing mandrel is connected to the angular rotor body by screws.

[0018] By adopting the above technical solution, the countersunk hole design can avoid screw exposure, and the screw connection method is simple and reliable.

[0019] Optionally, an annular groove is provided on the angle rotor body at the bottom of the central hole, and a flange is provided circumferentially at the bottom end of the sealing mandrel. The sealing mandrel is inserted into the central hole from the bottom, and the flange engages with the annular groove.

[0020] By adopting the above technical solution, the combination of the annular groove and the flange portion helps to improve the installation efficiency of the sealing mandrel and the angular rotor body, and improve the sealing performance of the annular mounting groove.

[0021] Optionally, the bottom end of the flange is provided with an annular end groove, and a plurality of countersunk holes are formed in the annular end groove.

[0022] By adopting the above technical solution, the opening of the annular end groove can further conceal the countersunk hole and screw.

[0023] Optionally, the angular rotor body is frustum-shaped.

[0024] By adopting the above technical solution, the frustum shape is first and foremost a rotating body, which helps to ensure rotational stability and facilitates the opening of centrifuge cavities.

[0025] Optionally, the top end of the sealing mandrel has a threaded hole.

[0026] In summary, this application includes at least the following beneficial effects:

[0027] 1. The angular rotor of this application reduces the influence of machining accuracy on dynamic balance; reduces the influence of material density non-uniformity on dynamic balance; reduces the requirements for initial dynamic balance, thereby improving production efficiency; and increases the stability of the centrifuge during operation.

[0028] 2. This application utilizes an annular mounting groove to accommodate several spheres. The annular mounting groove is sealed by sealing elements and a sealing mandrel. During rotation, the spheres shift positions within the groove, adjusting according to changes in rotational speed, load, or imbalance. This dynamic, automatic balancing is achieved without manual intervention. The spheres experience centrifugal force within the groove, moving towards areas with larger radii of rotation. If the rotor has a mass eccentricity, vibration causes the spheres within the groove to gradually accumulate on the side opposite to the imbalance, forming a counterweight that balances the centrifugal force difference, achieving dynamic balance adjustment and improving overall operational stability.

[0029] 3. The annular mounting groove of this application contains a viscous liquid. This liquid absorbs high-frequency vibrations: as the viscous liquid flows within the groove, it dissipates vibrational energy through internal friction (viscous resistance), thereby suppressing high-frequency vibrations or resonance. It also stabilizes movement: the liquid slows down the response speed of the balancing medium (such as a freely moving sphere or the liquid itself), preventing overshoot or oscillation caused by rapid movement. Dynamic mass compensation: the viscous liquid acts directly as the balancing medium. When the equipment rotates, the liquid flows towards the lighter side due to centrifugal force, forming a dynamic counterweight to offset unbalanced torques. It adapts to complex operating conditions: the liquid can fill any position within the annular mounting groove, providing more flexible responses to uneven mass distribution, especially in scenarios with frequent speed changes, for temperature and load compensation. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of a new type of centrifuge angular rotor structure.

[0032] Figure 2 This is a top view schematic diagram of a new type of centrifuge angular rotor structure.

[0033] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure along section line AA.

[0034] Figure 4 This is a schematic diagram of a novel centrifuge angular rotor structure from another perspective.

[0035] Figure 5 This is another schematic diagram of a novel centrifuge angular rotor structure.

[0036] Explanation of reference numerals in the attached drawings: 1. Angle rotor body; 2. Centrifuge cavity; 3. Annular sealing groove; 4. Seal; 5. Annular mounting groove; 6. Sphere; 7. Sealing mandrel; 8. Internal threaded hole; 9. Annular slot; 10. Annular end groove. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] The following is in conjunction with the appendix Figures 1 to 5 This application will be described in further detail.

[0039] This application discloses a novel centrifuge angular rotor structure.

[0040] Reference Figures 1 to 5 A novel centrifuge angular rotor structure includes:

[0041] The angular rotor body 1 is in the shape of a frustum, with both the top and bottom recessed. The frustum shape is primarily a rotating body, which helps to ensure rotational stability and facilitates the opening of the centrifuge chamber 2.

[0042] A central hole is provided on the angular rotor body 1, and several centrifugal cavities 2 are evenly spaced along the circumferential direction and are inclined at a certain angle to the central axis.

[0043] An annular sealing groove 3 is provided inside the central hole, and a sealing element 4, which can be a sealing ring, is provided inside the annular sealing groove 3. The cross-section of the annular sealing groove 3 is rectangular, and the rectangular cross-section has a large area. The sealing element 4 inside the annular sealing groove 3 can effectively cover the annular mounting groove 5 to ensure a good sealing effect.

[0044] An annular mounting groove 5 is provided on the inner side of the annular sealing groove 3. The cross-section of the annular mounting groove 5 is U-shaped. The U-shaped structure is more conducive to the free movement of the ball 6 within the annular mounting groove 5.

[0045] Several spheres 6 are set inside the annular mounting groove 5. They are solid metal spheres. The diameter of the spheres 6 is 0.1 mm smaller than the diameter of the annular mounting groove 5. The diameter of the spheres 6 should be slightly smaller than the diameter of the annular mounting groove 5. The adjustment needs to be made according to the diameter of the spheres 6 and the viscosity of the selected liquid.

[0046] The annular mounting groove 5 contains a viscous liquid, which can be a glycerol-based liquid, silicone oil, or fluorinated liquid. The viscous liquid absorbs high-frequency vibrations: as it flows within the groove, it dissipates vibrational energy through internal friction (viscous resistance), thus suppressing high-frequency vibrations or resonance. It also stabilizes movement: the liquid slows down the response speed of the balancing medium (such as a freely moving sphere 6 or the liquid itself), preventing overshoot or oscillation caused by rapid movement. Dynamic mass compensation: the viscous liquid acts directly as the balancing medium; as the equipment rotates, centrifugal force causes it to flow towards the lighter side, creating a dynamic counterweight to offset unbalanced torques. It adapts to complex operating conditions: the liquid can fill any position in the annular mounting groove 5, providing more flexible response to uneven mass distribution, especially in scenarios with frequent speed changes, for temperature and load compensation.

[0047] A sealing mandrel 7 for connecting to the centrifuge shaft is inserted into the center hole.

[0048] The top end of the sealing mandrel 7 has an internal threaded hole 8, which is used to connect to the centrifuge.

[0049] An annular groove 9 is provided on the angle rotor body 1 at the bottom of the central hole. A flange is provided circumferentially at the bottom end of the sealing mandrel 7. The sealing mandrel 7 is inserted into the central hole from the bottom, and the flange engages with the annular groove 9. The engagement of the annular groove 9 and the flange improves the installation efficiency of the sealing mandrel 7 and the angle rotor body 1, and enhances the sealing performance of the annular mounting groove 5.

[0050] The bottom end of the flange is provided with an annular end groove 10. Several countersunk holes are formed along the annular interval in the annular end groove 10. The opening of the annular end groove 10 can further hide the countersunk holes and screws, avoid screw exposure, and the connection method of the screws is simple and reliable.

[0051] This application utilizes the annular mounting groove 5 to house several spheres 6. The annular sealing groove 3 is sealed by the sealing element 4 and the sealing mandrel 7. During rotation, the spheres 6 change position within the annular mounting groove 5, adjusting their position according to changes in rotational speed, load, or imbalance. This dynamic automatic balancing is achieved without manual intervention. The spheres 6 experience centrifugal force within the annular mounting groove 5, moving towards areas with larger rotation radii. If the rotor has mass eccentricity, vibration causes the spheres 6 within the annular mounting groove 5 to gradually accumulate on the side opposite to the imbalance position, forming a counterweight. This balances the centrifugal force difference, achieving dynamic balance adjustment and improving overall operational stability.

[0052] In the description of this utility model, it should be understood that the terms "top," "bottom," "inner side," "end," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the term "connection" should be interpreted broadly. For example, it can be a mechanical connection or an electrical connection, or it can be a connection within two components, which can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0053] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A novel centrifuge angular rotor structure, characterized in that, include: An angular rotor body with a central hole has several centrifugal cavities with a certain angle to the central axis circumferentially formed on the angular rotor body. An annular sealing groove is formed inside the central hole, and an annular mounting groove is formed inside the annular sealing groove. Several spheres are arranged in the annular mounting groove, and a sealing element is arranged in the annular sealing groove. A sealing mandrel for connecting with the centrifuge shaft is arranged in the central hole.

2. The novel centrifuge angular rotor structure according to claim 1, characterized in that, The annular sealing groove has a rectangular cross-section.

3. The novel centrifuge angular rotor structure according to claim 1, characterized in that, The annular mounting groove is filled with liquid.

4. The novel centrifuge angular rotor structure according to claim 1, characterized in that, The cross-section of the annular mounting groove is U-shaped.

5. A novel centrifuge angular rotor structure according to claim 1, characterized in that, The diameter of the sphere is 0.1 mm smaller than the diameter of the annular mounting groove.

6. A novel centrifuge angular rotor structure according to claim 1, characterized in that, The sealing mandrel has several countersunk holes, and the sealing mandrel is connected to the angular rotor body by screws.

7. A novel centrifuge angle rotor structure according to claim 6, characterized in that, An annular slot is provided on the angular rotor body at the bottom of the central hole, and a flange is provided circumferentially at the bottom end of the sealing mandrel. The sealing mandrel is inserted into the central hole from the bottom, and the flange engages with the annular slot.

8. A novel centrifuge angle rotor structure according to claim 7, characterized in that, The bottom end of the flange is provided with an annular end groove, and a plurality of the countersunk holes are provided in the annular end groove.

9. A novel centrifuge angular rotor structure according to claim 1, characterized in that, The angular rotor body is truncated cone-shaped.

10. A novel centrifuge angular rotor structure according to claim 1, characterized in that, The top end of the sealing mandrel has a threaded hole.

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