Novel centrifugal machine horizontal rotor

Abstract

The utility model discloses a novel centrifugal machine horizontal rotor, and relates to the technical field of medical instruments, the novel centrifugal machine horizontal rotor comprises a rotor body provided with a rotating center hole, the rotor body is provided with an annular groove with the rotating center hole as the center, and a plurality of balls are arranged in the annular groove; an annular groove is formed in the rotor body, an annular inner sealing groove is formed in the position, on the inner side of the annular groove, of the rotor body, an annular outer sealing groove is formed in the position, on the outer side of the annular groove, of the rotor body, sealing rings are arranged in the annular inner sealing groove and the annular outer sealing groove, and a sealing cover is arranged on the annular groove. Therefore, in order to solve the problems of an existing horizontal rotor, reduce the manufacturing difficulty and the requirement for material density consistency, omit the requirement for full-inspection dynamic balance after each rotor is manufactured, reduce the precision requirement for balancing samples on the two sides during dynamic balance testing, and improve the overall operation stability.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a novel horizontal rotor for centrifuges. Background Technology

[0002] The dynamic balance performance of existing horizontal 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 rotor is completed, special equipment is needed to conduct dynamic balance tests to see if it is within the set range. When under load, the consistency of the weight of the symmetrically placed load has a significant impact on the overall dynamic balance performance.

[0003] 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

[0004] To address the aforementioned problems, reduce manufacturing difficulty and material density consistency requirements, eliminate the requirement for full dynamic balancing inspection after each rotor is manufactured, reduce the precision requirement for balancing samples on both sides during dynamic balancing tests, and improve the overall operational stability, this application provides a novel centrifuge horizontal rotor.

[0005] The present application provides a novel horizontal rotor for a centrifuge, which adopts the following technical solution.

[0006] A novel centrifuge horizontal rotor includes: a rotor body with a rotation center hole, an annular groove formed on the rotor body centered on the rotation center hole, a plurality of spheres arranged in the annular groove, an inner annular sealing groove formed on the rotor body inside the annular groove, an outer annular sealing groove formed on the rotor body outside the annular groove, a sealing ring provided in both the inner and outer annular sealing grooves, and a sealing cap provided on the annular groove.

[0007] By adopting the above technical solution, an annular groove is opened on the rotor body, and several spheres are set in the annular groove. An outer sealing ring and an inner sealing ring are set in conjunction with a sealing cover for sealing. When rotating, the spheres will change their position distribution inside the annular groove. The position of the spheres will be adjusted in real time according to the changes in rotation speed, load or imbalance state, without manual intervention, to achieve dynamic automatic balance. The spheres in the annular groove will be subjected to centrifugal force and move towards the area with a larger rotation radius (outer side). If the rotor has mass eccentricity, vibration will cause the spheres in the annular groove to gradually gather on the side opposite to the unbalanced position, forming a counterweight, thereby balancing the difference in centrifugal force.

[0008] Optionally, the annular groove is filled with liquid.

[0009] 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 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 groove, providing more flexible response to uneven mass distribution, especially in scenarios with frequent changes in rotational speed, for temperature and load compensation.

[0010] Optionally, the cross-section of the annular groove is U-shaped.

[0011] By adopting the above technical solution, the U-shaped structure is more conducive to the free movement of the sphere within the annular groove.

[0012] Optionally, the diameter of the sphere is 0.1 mm smaller than the diameter of the annular groove.

[0013] By adopting the above technical solution, the diameter of the sphere needs to be slightly smaller than the diameter of the annular groove, and needs to be adjusted according to the diameter of the sphere and the viscosity of the selected liquid.

[0014] Optionally, the rotor body has several rotor frames distributed at equal angles, and the rotor frames are provided with mounting holes.

[0015] Optionally, the rotor frame has two rotor supports branching off at its end, with adjacent rotor supports on two adjacent rotor frames distributed in parallel.

[0016] By adopting the above technical solution, the mounting holes on the rotor frame facilitate the installation of test tube boxes.

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

[0018] By adopting the above technical solution, the screw connection method is simple and reliable.

[0019] Optionally, the sealing cover has an annular protrusion at one end near the rotor body, and the rotor body has an annular groove that mates with the annular protrusion.

[0020] By adopting the above technical solution, the annular protrusion can be matched with the annular groove, improving the ease and accuracy of installation.

[0021] Optionally, the rotating center hole is arranged from bottom to top as a first hole segment, a second hole segment, a third hole segment, and a fourth hole segment. The first hole segment is conical, the inner diameter of the second hole segment is larger than the inner diameter of the third hole segment, and the inner diameter of the fourth hole segment is larger than the inner diameter of the third hole segment.

[0022] By adopting the above technical solution, the structural design of the rotating center hole facilitates connection with the main shaft, so that the main shaft can drive the rotor to rotate.

[0023] In summary, this application includes at least the following beneficial effects:

[0024] 1. The rotor of this application reduces the impact of machining accuracy on dynamic balance; reduces the impact of uneven material density on dynamic balance; reduces the requirements for initial dynamic balance, thereby improving production efficiency; and increases the stability of the centrifuge during operation.

[0025] 2. This application features an annular groove on the rotor body, within which several spheres are arranged. An outer sealing ring and an inner sealing ring are used in conjunction with a sealing cap for sealing. During rotation, the spheres change position distribution within the annular groove. The position of the spheres is adjusted in real time according to changes in rotational speed, load, or imbalance, achieving dynamic automatic balancing without manual intervention. The spheres within the annular groove are subjected to centrifugal force and move towards the area with a larger rotation radius (outer side). If the rotor has mass eccentricity, vibration will cause the spheres within the annular groove to gradually gather on the side opposite to the imbalance position, forming a counterweight to balance the difference in centrifugal force. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a schematic diagram of a new type of centrifuge horizontal rotor structure.

[0028] Figure 2 This is a top view schematic diagram of a new type of centrifuge horizontal rotor structure.

[0029] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure along section line AA.

[0030] Explanation of reference numerals in the attached drawings: 1. Rotor body; 2. Rotation center hole; 3. First hole segment; 4. Second hole segment; 5. Third hole segment; 6. Fourth hole segment; 7. Annular groove; 8. Sphere; 9. Inner annular sealing groove; 10. Outer annular sealing groove; 11. Sealing ring; 12. Sealing cover; 13. Rotor frame; 14. Rotor support; 15. Mounting hole. Detailed Implementation

[0031] 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.

[0032] The following is in conjunction with the appendix Figures 1 to 3 This application will be described in further detail.

[0033] This application discloses a novel horizontal rotor for centrifuges.

[0034] Reference Figures 1 to 3 A novel centrifuge horizontal rotor includes:

[0035] The rotor body 1 has a central rotation hole 2. From bottom to top, the central rotation hole 2 consists of a first hole segment 3, a second hole segment 4, a third hole segment 5, and a fourth hole segment 6. The first hole segment 3 is tapered. The inner diameter of the second hole segment 4 is larger than that of the third hole segment 5, and the inner diameter of the fourth hole segment 6 is larger than that of the third hole segment 5. The structural design of the central rotation hole 2 facilitates connection with the main shaft, allowing the main shaft to drive the rotor to rotate.

[0036] An annular groove 7 is formed on the rotor body 1 with the rotation center hole 2 as the center. The cross-section of the annular groove 7 is U-shaped. Several spheres 8 are arranged in the annular groove 7. The diameter of the spheres 8 is 0.1 mm smaller than the diameter of the annular groove 7. They can be solid metal spheres. The U-shaped structure is more conducive to the free movement of the spheres 8 in the annular groove 7. The diameter of the spheres should be slightly smaller than the diameter of the annular groove. It needs to be adjusted according to the diameter of the spheres and the viscosity of the selected liquid.

[0037] An annular inner sealing groove 9 is provided on the rotor body 1 inside the annular groove 7, and an annular outer sealing groove 10 is provided on the rotor body 1 outside the annular groove 7. A sealing ring 11 is provided in both the annular inner sealing groove 9 and the annular outer sealing groove 10, and a sealing cover 12 is provided on the annular groove 7.

[0038] An annular groove 7 is formed on the rotor body 1, and several spheres 8 are arranged in the annular groove 7. An outer sealing ring 11 and an inner sealing ring 11 are set to seal with a sealing cover 12. When rotating, the spheres 8 will change their position distribution inside the annular groove 7. The position of the spheres 8 will be adjusted in real time according to the changes in rotation speed, load or unbalanced state, without manual intervention, to achieve dynamic automatic balance. The spheres 8 will be subjected to centrifugal force in the annular groove 7 and move towards the area with a larger rotation radius (outer side). If the rotor has mass eccentricity, vibration will cause the spheres 8 in the annular groove 7 to gradually gather on the side opposite to the unbalanced position, forming a counterweight, thereby balancing the difference in centrifugal force.

[0039] The annular groove 7 contains a liquid, which is a viscous liquid and can be a glycerol-based liquid, silicone oil, or fluorinated liquid.

[0040] The viscous liquid setting can absorb high-frequency vibrations: When the viscous liquid flows within the annular groove 7, it dissipates vibrational energy through internal friction (viscous resistance), thereby suppressing high-frequency vibrations or resonance. It can stabilize movement: The liquid slows down the response speed of the balancing medium (such as a freely moving sphere 8 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 operating conditions: The liquid can fill any position in the annular groove 7, providing more flexible response to uneven mass distribution, especially in scenarios with frequent changes in rotational speed, for temperature and load compensation.

[0041] Four rotor frames 13 are evenly distributed on the rotor body 1. Two rotor supports 14 are forked at the ends of the rotor frames 13. The adjacent rotor supports 14 on two adjacent rotor frames 13 are parallel to each other. Each rotor support 14 has a mounting hole 15. The mounting holes 15 on the rotor frames 13 are provided to facilitate the installation of test tube boxes.

[0042] The sealing cover 12 has four countersunk holes and is connected to the rotor body 1 by screws. The screw connection method is simple and reliable. The end of the sealing cover 12 near the rotor body 1 has an annular protrusion. The rotor body 1 has an annular groove that matches the annular protrusion. The annular protrusion can match the annular groove, which improves the ease and accuracy of installation.

[0043] In the description of this utility model, it should be understood that the terms "outer side," "inner side," "internal," "one 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 elements, 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.

[0044] 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 horizontal rotor for a centrifuge, characterized in that, include: A rotor body with a central rotating hole has an annular groove centered on the central rotating hole. Several spheres are arranged in the annular groove. An inner annular sealing groove is formed on the rotor body inside the annular groove, and an outer annular sealing groove is formed on the rotor body outside the annular groove. A sealing ring is provided in both the inner and outer annular sealing grooves. A sealing cap is provided on the annular groove.

2. The novel horizontal rotor for a centrifuge according to claim 1, characterized in that, The annular groove is filled with liquid.

3. A novel horizontal rotor for a centrifuge according to claim 1, characterized in that, The cross-section of the annular groove is U-shaped.

4. A novel horizontal rotor for a centrifuge according to claim 1, characterized in that, The diameter of the sphere is 0.1 mm smaller than the diameter of the annular groove.

5. A novel horizontal rotor for a centrifuge according to claim 1, characterized in that, The rotor body has several rotor frames distributed at equal angles, and the rotor frames are provided with mounting holes.

6. A novel horizontal rotor for a centrifuge according to claim 5, characterized in that, The rotor frame has two rotor supports branching off at its end, and the adjacent rotor supports on the two adjacent rotor frames are distributed in parallel.

7. A novel horizontal rotor for a centrifuge according to claim 1, characterized in that, The sealing cover has several countersunk holes, and the sealing cover is connected to the rotor body by screws.

8. A novel horizontal rotor for a centrifuge according to claim 1, characterized in that, The sealing cover has an annular protrusion at one end near the rotor body, and the rotor body has an annular groove that matches the annular protrusion.

9. A novel horizontal rotor for a centrifuge according to claim 1, characterized in that, The rotating center hole consists of four segments from bottom to top: a first segment, a second segment, a third segment, and a fourth segment. The first segment is conical, the inner diameter of the second segment is larger than the inner diameter of the third segment, and the inner diameter of the fourth segment is larger than the inner diameter of the third segment.

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