Centrifugal machine rotor, centrifugal machine and preparation method of centrifugal machine rotor

Abstract

The invention relates to the technical field of centrifugal machines, and discloses a centrifugal machine rotor, a centrifugal machine and a preparation method of the centrifugal machine rotor. The centrifuge rotor comprises a rotor body, and the rotor body comprises a main body provided with a test tube cavity; the upper edge is annular and is arranged at the upper end of the main body; the base is arranged at the bottom of the main body; wherein the main body is detachably connected with the upper edge, and / or the main body is detachably connected with the base. During processing, an applicable process can be adopted for processing according to the structure of each component, so that the internal structure of the centrifugal machine rotor is prevented from being damaged, the fiber trend of carbon fibers can be avoided, the strength of the centrifugal machine rotor is ensured, and the weight is reduced.

Description

Technical Field

[0001] This application relates to the field of centrifuge technology, for example to a centrifuge rotor, a centrifuge, and a method for preparing the centrifuge rotor. Background Technology

[0002] Currently, the rotors of traditional centrifuges are generally made of aluminum alloy. Aluminum alloy is heavy but has low strength. As the speed of centrifuges increases, aluminum alloy rotors can no longer meet the requirements.

[0003] The related technology discloses a carbon fiber rotor. The processing method of the carbon fiber rotor is to die-cast a blank, and after the blank is formed, the internal structure of the rotor is machined twice, the outer surface is machined into an outer circle, and then the outer surface is wet-wound with carbon fiber to increase the strength. Finally, after curing, the outer contour is polished.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art: In related technologies, secondary machining of the internal structure of a centrifuge carbon fiber rotor after the blank is formed will damage the internal fiber orientation, causing the original continuous fibers to break, which greatly damages the strength performance of the carbon fiber material itself.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a centrifuge rotor, a centrifuge, and a method for preparing the centrifuge rotor to improve the strength of the centrifuge rotor.

[0008] This disclosure provides a centrifuge rotor, which includes a rotor body. The rotor body includes: a main body with a test tube cavity; an upper edge that is annular and located at the upper end of the main body; and a base located at the bottom of the main body. The main body and the upper edge are detachably connected, and / or the main body and the base are detachably connected.

[0009] In some alternative embodiments, the upper edge engages with the body, and / or the base engages with the body.

[0010] In some alternative embodiments, multiple test tube cavities are arranged circumferentially along the main body, and a weight-reducing groove is formed between the outer walls of two adjacent test tube cavities.

[0011] In some optional embodiments, the base portion is recessed downward to form a groove, and when the main body is connected to the base, the groove is located at the bottom of the test tube cavity, and the number of grooves is the same as the number of test tube cavities and corresponds one-to-one; and / or, the bottom of the main body is recessed upward to form a clearance groove, and multiple test tube cavities are spaced apart on the outer periphery of the clearance groove; the base includes: a base body located at the bottom of the test tube cavity; a connecting plate connected to the inner edge of the through hole and extending upward; wherein, when the main body is connected to the base, the connecting plate is attached to the inner wall surface of the clearance groove.

[0012] In some alternative embodiments, the centrifuge rotor further includes: a covering layer covering the outside of the rotor body for connecting the body, the upper edge and the base; and / or, the body is provided with a connection hole, and the centrifuge rotor further includes: a stainless steel insert provided in the connection hole for cooperating with the motor shaft of the centrifuge.

[0013] This disclosure also provides a method for preparing a centrifuge rotor, comprising: preparing the upper edge of a first carbon fiber shaped fabric using a machining process; and preparing the main body of a second carbon fiber shaped fabric using a mold forming process. The third carbon fiber molding cloth is used in conjunction with a mold molding process to prepare the base; the upper edge, the main body and the base are assembled to obtain the rotor body; the rotor body is cured and coated to obtain the centrifuge rotor.

[0014] In some alternative embodiments, the tensile strength of the second carbon fiber molded fabric is greater than that of the first carbon fiber molded fabric; and / or, the tensile strength of the second carbon fiber molded fabric is greater than that of the third carbon fiber molded fabric.

[0015] In some alternative embodiments, after curing and winding the rotor body, a centrifuge rotor is obtained, including: winding carbon fiber filaments around the outside of the rotor body and filling it with resin to obtain a first component; curing the first component at high temperature; and processing the outer surface of the first component after high temperature curing to obtain a centrifuge rotor.

[0016] In some alternative embodiments, the carbon fiber filaments are of grade T700 or higher; and / or, the first carbon fiber shaped fabric is of grade T300 or higher; and / or, the second carbon fiber shaped fabric is of grade T700 or higher; and / or, the third carbon fiber shaped fabric is of grade T300 or higher.

[0017] This disclosure also provides a centrifuge, which includes a centrifuge rotor as described in any of the above embodiments or a centrifuge rotor prepared by the method described in any of the above embodiments.

[0018] The centrifuge rotor, centrifuge, and method for preparing the centrifuge rotor provided in this disclosure can achieve the following technical effects: In this embodiment, the centrifuge rotor body is divided into two or three detachably connected components. Each component can be processed individually, and the three components can be manufactured using different processes. During processing, appropriate processes can be used for each component based on its structure, thereby avoiding damage to the internal structure of the centrifuge rotor and preventing disruption of the carbon fiber orientation, thus ensuring the strength of the centrifuge rotor and reducing its weight.

[0019] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0020] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a schematic structural diagram of a rotor body provided in an embodiment of the present disclosure from one perspective; Figure 2 This is a schematic diagram of the structure of a rotor body from another perspective, provided in an embodiment of this disclosure; Figure 3 This is an exploded structural diagram of a rotor body provided in an embodiment of this disclosure; Figure 4 This is a schematic diagram of the structure of a rotor body from another perspective, provided in an embodiment of this disclosure; Figure 5 This is provided by the embodiments of this disclosure. Figure 4 A schematic cross-sectional view along the AA direction; Figure 6 yes Figure 5 An enlarged schematic diagram of part A in the middle; Figure 7 yes Figure 5 Enlarged schematic diagram of part B; Figure 8 yes Figure 5 An enlarged schematic diagram of section C; Figure 9 This is a schematic diagram of the structure of a main body provided in an embodiment of this disclosure; Figure 10 This is a schematic diagram of the structure of a base provided in an embodiment of this disclosure; Figure 11 This is a schematic diagram of the upper edge structure provided in an embodiment of this disclosure; Figure 12 This is a schematic diagram of the structure of a mold provided in an embodiment of this disclosure; Figure 13This is a cross-sectional structural diagram of a mold and a main body assembly provided in an embodiment of this disclosure; Figure 14 This is a schematic diagram of the winding direction of carbon fiber dry filaments on the outer side of a rotor body provided in an embodiment of this disclosure; Figure 15 This is a schematic flowchart of a method for preparing a centrifuge rotor provided in an embodiment of this disclosure; Figure 16 This is a schematic flowchart of another centrifuge rotor preparation method provided in this embodiment.

[0021] Figure label: 10. Rotor body; 11. Upper edge; 111. First slot; 12. Main body; 121. Test tube cavity; 122. Weight reduction groove; 123. Clearance groove; 124. First protrusion; 125. First stepped surface; 126. Connecting hole; 13. Base; 131. Base body; 132. Connecting plate; 133. Groove; 134. Second stepped surface; 20. Mold; 21. First mold; 22. Second mold; 23. Third mold; 24. First insert; 25. Second insert; 26. Third insert; 30. First direction; 40. Second direction. Detailed Implementation

[0022] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0023] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for describing embodiments of this disclosure herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0024] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0025] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0026] Unless otherwise stated, the term "multiple" means two or more.

[0027] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0029] Combination Figures 1 to 11 As shown, this embodiment of the present disclosure provides a centrifuge rotor, which includes a rotor body 10. The rotor body 10 includes a main body 12, an upper edge 11, and a base 13. The main body 12 is configured with a test tube cavity 121. The upper edge 11 is annular and is located at the upper end of the main body 12. The base 13 is located at the bottom of the main body 12. The main body 12 and the upper edge 11 are detachably connected, and / or the main body 12 and the base 13 are detachably connected.

[0030] In this embodiment, the centrifuge rotor body 10 is divided into three detachably connected components: a main body 12, an upper edge 11, and a base 13. This allows each component to be manufactured separately during the centrifuge rotor manufacturing process. Appropriate processing techniques can be used based on the structure of the three components during manufacturing, thereby avoiding damage to the internal structure of the centrifuge rotor and preventing disruption of the carbon fiber orientation, thus ensuring the strength of the centrifuge rotor and reducing its weight.

[0031] Optionally, the centrifuge rotor is a carbon fiber rotor.

[0032] Optionally, such as Figures 5 to 10 As shown, the upper edge 11 is engaged with the main body 12, and / or the base 13 is engaged with the main body 12.

[0033] In this embodiment, the main body 12 is detachably connected to the upper edge 11 and / or the base 13 by a snap-fit ​​connection. The snap-fit ​​connection has a simple structure and, compared to a threaded connection, requires no additional parts or rotation for operation, which facilitates the assembly and preparation of the rotor body 12.

[0034] Optionally, the upper edge 11 is provided with a first slot 111, the opening of the first slot 111 facing downwards, and the upper end of the main body 12 is provided with a first protrusion 124. When the upper edge 11 is connected to the main body 12, the first protrusion 124 is located in the first slot 111. This not only enables the connection between the upper edge 11 and the main body 12, but also increases the connection surface between the upper edge 11 and the main body 12, thereby improving the sealing performance of the connection between the upper edge 11 and the main body 12.

[0035] Optionally, the upper edge 11 is provided with an opening groove that extends circumferentially along the upper edge 11. The opening groove is used to cooperate with the cover of the centrifuge rotor so that the cover tightly covers the upper end of the centrifuge rotor.

[0036] Optionally, the upper part of the main body 12 protrudes upward to form a first locking protrusion 124. The first locking protrusion 124 extends circumferentially along the main body 12, and the first locking groove 111 extends circumferentially along the upper edge 11. The first locking protrusion 124 and the first locking groove 111 are adapted to each other. This can improve the tightness of the connection between the upper edge 11 and the main body 12.

[0037] Optionally, the upper end of the main body 12 is provided with a plurality of first card protrusions 124, which are arranged sequentially at intervals along the circumference of the main body 12. The number of first card slots 111 is the same as the number of first card protrusions 124 and corresponds one to one.

[0038] Optionally, the upper end of the main body 12 is provided with a plurality of first locking protrusions 124. The plurality of first locking protrusions 124 are arranged sequentially at intervals along the circumference of the main body 12. The plurality of first locking protrusions 124 have different sizes or structures. The number of first locking slots 111 is the same as the number of first locking protrusions 124 and corresponds one-to-one. In this way, when the upper edge 11 and the main body 12 need to be positioned and installed, the first locking protrusions 124 of different sizes or structures can cooperate with the first locking slots 111 to ensure the connection accuracy between the upper edge 11 and the main body 12 without the need for additional positioning.

[0039] Optionally, the bottom of the main body 12 is provided with a first step surface 125, and the base 13 is provided with a second step surface 134. The first step surface 125 and the second step surface 134 are adapted to each other. When the base 13 is connected to the main body 12, the first step surface 125 and the second step surface 134 are in contact. This can improve the connection surface between the base 13 and the main body 12, thereby improving the fit and sealing of the base 13 and the main body 12.

[0040] Optionally, the number of first step surfaces 125 is one or more, and the number of second step surfaces 134 is the same as that of the first step surfaces 125 and corresponds one-to-one.

[0041] Optionally, the first step surface 125 is provided on the outer side of the bottom of the body 12 and extends in a ring along the circumference of the body 12, so as to seal the base 13 and the body 12 from the outer side of the bottom of the body 12, improve the connection strength, and prevent liquid leakage.

[0042] Optionally, the first step surface 125 is provided on the inner side of the bottom of the main body 12 and extends in a ring along the circumference of the main body 12. This can seal the base 13 and the main body 12 from the inside of the main body 12, improve the connection strength between the base 13 and the main body 12, and improve the connection sealing on the inside.

[0043] Optionally, the bottom of the main body 12 is recessed upward to form a weight-reducing groove 122, which is located between the outer wall surfaces of two adjacent test tube cavities 121.

[0044] In this embodiment, since the main body 12 and the base 13 are detachably connected, after the test tube cavity 121 is machined in the main body 12, excess parts can be removed to form a lightweight design while ensuring the structural strength of the rotor, thereby further reducing the weight of the centrifuge rotor and reducing energy consumption and motor load during centrifuge operation. Furthermore, the weight-reducing groove 122 is located between two adjacent test tube cavities 121. The weight-reducing groove 122 can accelerate the airflow between adjacent test tube cavities 121 when the centrifuge rotor rotates, thus providing a certain heat dissipation effect. Moreover, the weight-reducing groove 122 provides flow space on the outer peripheral wall of each test tube cavity 121, allowing accumulated water and other substances generated within the test tube cavity 121 to be discharged through the weight-reducing groove 122, improving drainage efficiency.

[0045] Optionally, if Figure 9 and Figure 10As shown, the bottom of the main body 12 is recessed upward to form a relief groove 123, and multiple test tube cavities 121 are spaced apart on the outer periphery of the relief groove 123; the base 13 includes a base body 131 and a connecting plate 132. The base body 131 has a through hole inside and a groove 133. Multiple grooves 133 are spaced apart on the outer side of the through hole along the circumference of the through hole; the connecting plate 132 is connected to the inner edge of the through hole and extends upward; wherein, when the main body 12 is connected to the base 13, the lower end of the test tube cavity 121 is located in the groove 133, and the connecting plate 132 is attached to the inner wall surface of the relief groove 123.

[0046] In this embodiment, the clearance groove 123 further reduces the weight of the centrifuge rotor and facilitates the insertion of the centrifuge shaft, enabling the centrifuge motor to drive the centrifuge rotor. The base 13 is provided with a connecting plate 132, which fits against the inner wall of the clearance groove 123. This not only improves the connection stability between the base 13 and the main body 12 but also increases the strength of the clearance groove 123, thereby enhancing the strength of the centrifuge rotor. The base body 131 is provided with a groove 133 located at the lower end of the test tube cavity 121. The groove 133 not only fits the test tube cavity 121 but also catches any accumulated water within it, ensuring that the liquid immersed in the test tube cavity 121 can be drained promptly.

[0047] Optionally, the base body 131 is provided with a second stepped surface 134.

[0048] Alternatively, the main body and the base can be connected by a threaded connection or other detachable connection methods.

[0049] Alternatively, other detachable connection methods can be used between the main body and the base, such as magnetic or pin connections.

[0050] Optionally, the centrifuge rotor also includes a covering layer that covers the outside of the rotor body 10 and is used to connect the body 12, the upper edge 11 and the base 13.

[0051] In this embodiment, after the main body 12, the upper edge 11 and the base 13 are connected together, a covering layer is provided on the outside of the three, which can further improve the connection strength of the main body 12, the upper edge 11 and the base 13 and prevent separation when the centrifuge rotor rotates.

[0052] Optionally, the main body 12 is provided with a connection hole 126, and the centrifuge rotor also includes a stainless steel insert, which is provided in the connection hole 126 and is used to cooperate with the motor shaft of the centrifuge.

[0053] In this embodiment, the stainless steel insert can increase the strength of the connection between the centrifuge rotor and the centrifuge motor shaft, thereby ensuring the stability of the centrifuge during operation.

[0054] Optionally, such as Figure 15 As shown in the embodiments of this disclosure, a method for preparing a centrifuge rotor is also provided, comprising: S11, The upper edge 11 of the first carbon fiber molded fabric is prepared by machining process; S12, The second carbon fiber molding cloth is used in conjunction with the mold molding process to prepare the main body 12; S13, the base 13 is prepared by the third carbon fiber molding cloth in conjunction with the mold molding process; S14. Assemble the upper edge 11, the main body 12 and the base 13 to obtain the rotor body 10; S15. The rotor body 10 is cured and coated to obtain a centrifuge rotor.

[0055] In this embodiment, the upper edge 11, main body 12, and base 13 of the centrifuge rotor are processed using different machining processes. Machining is suitable for forming the annular upper edge 11, ensuring its roundness and structural uniformity. Mold forming allows for precise control of the shape and size of the test tube cavity 121 of the main body 12 and the complex structure of the base 13, improving component precision. After the upper edge 11, main body 12, and base 13 are prepared using different processes, they are assembled, then cured and coated to finally form the centrifuge rotor. Using the preparation method of this application reduces the molding difficulty of the centrifuge rotor and avoids defects such as bubbles or cracks caused by integrated molding. Furthermore, the main body 12 uses carbon fiber molding cloth in conjunction with mold forming, resulting in high processing efficiency and low processing difficulty. This method does not damage the strength of the carbon fiber in the main body 12, leading to a stronger centrifuge rotor. Moreover, compared to integrated centrifuge rotors that are all prepared using carbon fiber molding cloth in conjunction with mold forming, this application uses less carbon fiber molding cloth, resulting in lower cost.

[0056] Optionally, after the main body 12 is snapped into the base 13 and / or the upper edge 11 to form the rotor body 10, the rotor body 10 is cured and covered to obtain a centrifuge rotor.

[0057] In this embodiment, the main body 12 is snapped into the base 13 and / or the upper edge 11, thereby increasing the connection surface between the main body 12 and the base 13 and / or the upper edge 11 and improving the sealing of the connection. When the rotor body 10 is cured, the resin enters the connection between the main body 12 and the base 13 and / or the upper edge 11, which can improve the connection strength between the main body 12 and the base 13 and / or the upper edge 11, thereby ensuring the overall strength of the centrifuge rotor.

[0058] Optionally, the resin is an epoxy resin.

[0059] Optionally, S11, the upper edge 11 of the first carbon fiber molded fabric is prepared by machining process, including: setting the multilayer first carbon fiber molded fabric in a preset direction and machining it.

[0060] Optionally, the first carbon fiber shaped fabric is prepared by a combination of machining and winding processes to form the upper edge 11.

[0061] Optionally, the first carbon fiber molding cloth is wound around the upper edge mold to form an upper edge initial part, and the upper edge is obtained after the upper edge initial part is cured.

[0062] like Figure 12 and Figure 13 As shown, mold 20 includes a first mold 21, a second mold 22, and a third mold 23 arranged sequentially from top to bottom. Mold 20 also includes a first insert 24, a second insert 25, and a third insert 26. The first insert is used to form the opening of the main body, the second insert 25 is used to form the test tube cavity, and the third insert 26 is used to form the weight reduction groove and the clearance groove.

[0063] In some optional embodiments, S12, the preparation of the main body 12 using the second carbon fiber molded fabric and a mold forming process includes: assembling a third mold and a third insert to form a first assembly; then laying multiple sheets of second carbon fiber molded fabric in a predetermined number of layers or a predetermined direction within the first assembly; and sequentially assembling the first insert, the second insert, and the first mold. External force (such as pressure or vacuum pressure) is used to make the second carbon fiber molded fabric conform to the mold contour, thereby achieving the preparation of the main body.

[0064] In some optional embodiments, S13, the preparation of the base 13 by the third carbon fiber molding cloth in conjunction with the mold molding process includes: laying the third carbon fiber molding cloth in the base mold, using external force (such as pressure, vacuum negative pressure) to make the third carbon fiber molding cloth conform to the mold outline to obtain the initial part of the base, and machining the initial part of the base to form a second step surface and / or a first buckle.

[0065] Optionally, such as Figure 12 and 13 As shown, the main body 12 is prepared using a second carbon fiber molding cloth in conjunction with a mold 20.

[0066] Optionally, such as Figure 16 As shown, step S15: Curing and coating the rotor body 10 to obtain a centrifuge rotor, including: S151. Carbon fiber filaments are wound around the outside of the rotor body 10 and filled with resin to obtain the first component. S152. The first component is cured at high temperature; S153. The outer surface of the first component after high-temperature curing is processed to obtain the centrifuge rotor.

[0067] In this embodiment, carbon fiber filaments and resin can form a coating layer, creating a uniform coating layer on the outside of the rotor body 10, thereby improving the strength and impact resistance of the centrifuge rotor. Simultaneously, the resin can fill the gaps between the upper edge 11, the main body 12, and the base 13, improving the sealing at the joints and the strength of the centrifuge rotor. High-temperature curing allows the resin to fully cross-link and cure, improving the fatigue resistance and service life of the centrifuge rotor. Processing the outer surface of the first component after high-temperature curing allows for precise control of the rotor's dimensions and surface accuracy, ensuring coaxiality during rotor rotation, reducing air resistance and the risk of imbalance, and improving the operating efficiency and stability of the centrifuge rotor.

[0068] like Figure 14 As shown, optionally, S151, carbon fiber dry filaments are wound around the outside of the rotor body 10, including: The winding direction of the carbon fiber filaments includes a first direction 30 and a second direction 40. The first direction 30 is the circumferential direction of the centrifuge rotor, and the second direction 40 is the height direction of the centrifuge rotor. In this way, the extension of the carbon fiber filaments along the second direction 40 can fix the upper edge, the main body and the base, while the carbon fiber filaments extending in the first direction 30 can fix the centrifuge rotor circumferentially. Furthermore, the carbon fiber filaments extending in the first direction 30 can intersect with the carbon fiber filaments extending in the second direction 40, thereby improving the winding strength of the carbon fiber filaments.

[0069] Optionally, the second direction 30 is inclined along the height direction of the centrifuge rotor, so that when there are multiple carbon fiber filaments in the second direction, the multiple carbon fiber filaments can cross each other, further improving the winding strength of the carbon fiber filaments.

[0070] In some alternative embodiments, such as Figure 14 As shown, the winding direction of the carbon fiber filaments includes a first direction and a second direction. The first direction is the circumferential direction of the centrifuge rotor, and the second direction is the direction that extends along the height of the centrifuge rotor and is inclined. Optionally, when the carbon fiber filaments are wound on the outside of the centrifuge rotor, the carbon fiber filaments first wrap around the upper edge circumferentially once, then extend inclinedly from the upper edge to the base along the second direction, then wrap around the base circumferentially once, then extend inclinedly upward from the base, and then wrap around the upper edge circumferentially once, and so on. In this way, the carbon fiber filaments are positioned from the top and bottom towards the middle of the centrifuge rotor, which improves the winding strength of the carbon fiber filaments and also improves the connection strength between the upper edge, the main body, and the base.

[0071] Optionally, the outer surface of the first component after high-temperature curing is processed to obtain a centrifuge rotor, including: wrapping a transparent resin around the outer surface of the first component after high-temperature curing to form a pattern, and curing it; after curing, grinding and spraying a transparent resin coating on the outer surface; grinding and polishing the coating after curing; and performing dynamic balancing to obtain a centrifuge rotor.

[0072] Optionally, the tensile strength of the second carbon fiber molded fabric is greater than that of the first carbon fiber molded fabric.

[0073] Optionally, the tensile strength of the second carbon fiber molded fabric is greater than that of the third carbon fiber molded fabric.

[0074] In this embodiment, the upper edge 11 and the main body 12 have different structures and are subjected to different forces. The main body 12, as the core load-bearing component of the rotor, must withstand various loads such as the weight of the test tube and the centrifugal force of high-speed rotation. Therefore, the main body 12 uses a second carbon fiber molded fabric with high tensile strength, resulting in a high-strength structure that avoids deformation and breakage. The upper edge 11 and the base 13 mainly serve as connections and auxiliary supports, requiring relatively lower strength; therefore, a slightly lower-strength carbon fiber fabric is used to reduce material costs while meeting performance requirements. In this application, different carbon fiber materials are used to prepare different components of the centrifuge rotor, ensuring the reliability of key rotor parts while avoiding material waste.

[0075] Optionally, the tensile strength of the carbon fiber filaments is greater than or equal to the tensile strength of the second carbon fiber shaped fabric.

[0076] In this embodiment, carbon fiber filaments are wound around the outside of the rotor body 10 to form a coating layer. During the high-speed rotation of the centrifuge rotor, the coating layer is subjected to high centrifugal force and impact force. Therefore, the carbon fiber filaments are made of a material with high tensile strength, which can enhance the strength of the centrifuge rotor.

[0077] Optionally, the carbon fiber dry filaments are of grade T700 or higher.

[0078] Optionally, the first carbon fiber molded fabric is of grade T300 or higher.

[0079] Optionally, the second carbon fiber molded fabric is of grade T700 or higher.

[0080] Optionally, the third carbon fiber molded fabric uses a grade of T300 or higher.

[0081] In this embodiment, both the carbon fiber filaments and the second carbon fiber molded fabric are of grade T700 or higher. This results in a higher molecular bonding between the coating layer and the main body 12, reducing the risk of peeling. Furthermore, the main body 12 and the coating layer significantly improve the strength and deformation resistance of the main body 12.

[0082] In addition, the first and third carbon fiber molded fabrics are made of T300 or higher grade carbon fiber, so that the upper edge 11 and the base 13 can ensure the strength requirements of the foundation while reducing costs.

[0083] Optionally, the second carbon fiber molded fabric can be of grades such as T700 or T800.

[0084] In one specific embodiment, this disclosure provides a method for preparing a centrifuge rotor, comprising: The upper edge 11 of the first carbon fiber molded fabric of grade T300 was prepared by machining process. The main body 12 is prepared by using the second carbon fiber molding fabric of T700 grade with a mold molding process; The base 13 is prepared using the third carbon fiber molding fabric of grade T300 in conjunction with a mold molding process. The upper edge 11, the main body 12 and the base 13 are snapped together to obtain the rotor body 10; T700 grade carbon fiber dry filaments are wound around the outside of the rotor body 10 and filled with resin to obtain the first component. The first component is cured at high temperature; A pattern is formed by wrapping transparent resin around the outer surface of the first component after high-temperature curing, and then curing. After curing, the outer surface is sanded and sprayed with a transparent resin coating. After the coating is cured, it is sanded and polished, and then dynamic balancing is performed to obtain the centrifuge rotor.

[0085] This disclosure also provides a centrifuge, which includes a centrifuge rotor as described in any of the above embodiments or a centrifuge rotor prepared by a method for preparing a centrifuge rotor as described in any of the above embodiments.

[0086] The following specific embodiments illustrate the preparation method of the centrifuge rotor and the centrifuge rotor according to the present disclosure, so as to more clearly illustrate the technical problems solved by the present application, the technical solutions, and the beneficial effects. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present application and its applications.

[0087] Unless otherwise specified, the preparation methods used in the following examples are conventional methods. Where specific techniques or conditions are not specified in the examples, they should be performed in accordance with the techniques or conditions described in the literature in this field or according to the product instructions.

[0088] Example 1 The upper edge of the first carbon fiber molded fabric of grade T300 was prepared by machining process; The main body is prepared by using T700 grade second carbon fiber molding fabric in conjunction with a mold molding process; The base is prepared using the third carbon fiber molding fabric of grade T300 in conjunction with a mold molding process. The upper edge, main body, and base are snapped together to obtain the rotor body; The first component is obtained by winding T700 grade carbon fiber dry filaments around the outside of the rotor body and filling it with resin. The first component is cured at high temperature; A pattern is formed by wrapping transparent resin around the outer surface of the first component after high-temperature curing, and then curing. After curing, the outer surface is sanded and sprayed with a transparent resin coating. After the coating is cured, it is sanded and polished, and then dynamic balancing is performed to obtain the centrifuge rotor.

[0089] Comparative Example 1: Multi-layer carbon fiber molded fabric is manually laid into a cylindrical shape, and each layer of carbon fiber molded fabric is coated with a special transparent resin. The multi-layer carbon fiber molded fabric is extruded into place at one time using a molding mold, and the mounting holes are machined using a machine tool. The core of the centrifuge rotor after molding is reinforced by winding carbon fiber dry filaments in a winding machine to obtain the centrifuge rotor.

[0090] After testing, the centrifuge rotor prepared in Example 1 weighed 10 kg, while the centrifuge rotor prepared in Comparative Example 1 weighed 17 kg, with a weight reduction ratio of over 40%. Furthermore, after stress calculation, the centrifuge rotor of Example 1 and the centrifuge rotor of Comparative Example 1 had essentially the same strength.

[0091] After the centrifuge rotor was assembled into the centrifuge, it was tested and found that the maximum speed of the centrifuge rotor prepared in Example 1 could reach 10,500 rpm, while the maximum speed of the centrifuge rotor prepared in Comparative Example 1 was 9,000 rpm.

[0092] Therefore, compared with the one-piece molded centrifuge rotor of prior art 1, the centrifuge rotor of this application can remove excess parts and can use different materials for different parts. This allows the centrifuge rotor and centrifuge manufacturing method of this application to further reduce the weight of the centrifuge rotor while ensuring the strength of the centrifuge, thereby increasing the rotational speed of the centrifuge rotor and improving centrifugation efficiency.

[0093] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A centrifuge rotor, characterized in that, Includes a rotor body, which includes: The main body is constructed with a test tube cavity; The upper edge is ring-shaped and located at the top of the main body; The base is located at the bottom of the main body; The main body is detachably connected to the upper edge, and / or the main body is detachably connected to the base.

2. The centrifuge rotor according to claim 1, characterized in that, The upper edge engages with the main body, and / or the base engages with the main body.

3. The centrifuge rotor according to claim 1, characterized in that, Multiple test tube cavities are spaced apart along the circumference of the main body, and a weight-reducing groove is formed between the outer walls of two adjacent test tube cavities.

4. The centrifuge rotor according to claim 1, characterized in that, The base is recessed downwards to form a groove. When the main body is connected to the base, the groove is located at the bottom of the test tube cavity. The number of grooves is the same as the number of test tube cavities and they correspond one-to-one. And / or, The bottom of the main body is recessed upward to form a clearance groove, and multiple test tube cavities are spaced apart on the outer periphery of the clearance groove; The base includes: The base body is located at the bottom of the test tube cavity; A connecting plate is attached to the inner edge of the through hole and extends upward; When the main body is connected to the base, the connecting plate fits against the inner wall of the clearance groove.

5. The centrifuge rotor according to any one of claims 1 to 4, characterized in that, Also includes: The cladding layer, which covers the outside of the rotor body, is used to connect the main body, the upper edge, and the base; And / or, The main body is provided with connection holes, and the centrifuge rotor also includes: A stainless steel insert is located in the connection hole for mating with the motor shaft of the centrifuge.

6. A method for preparing a centrifuge rotor as described in any one of claims 1 to 5, comprising: The first carbon fiber molded fabric is prepared by machining process for the upper edge; The main body is prepared by a second carbon fiber molded fabric combined with a mold forming process; The third carbon fiber molded cloth is used in conjunction with a mold forming process to prepare the base; The rotor body is obtained by assembling the upper edge, main body, and base. The rotor body is cured and coated to obtain a centrifuge rotor.

7. The method for preparing a centrifuge rotor according to claim 6, characterized in that, The tensile strength of the second carbon fiber molded fabric is greater than that of the first carbon fiber molded fabric; and / or, The tensile strength of the second carbon fiber molded fabric is greater than that of the third carbon fiber molded fabric.

8. The method for preparing a centrifuge rotor according to claim 6, characterized in that, After curing and winding the rotor body, a centrifuge rotor is obtained, comprising: The first component is obtained by winding carbon fiber filaments around the outside of the rotor body and filling it with resin. The first component is cured at high temperature; The outer surface of the first component after high-temperature curing is processed to obtain the centrifuge rotor.

9. The method for preparing a centrifuge rotor according to claim 8, characterized in that, Carbon fiber dry filaments use grade T700 or higher; and / or, The first carbon fiber molded fabric uses a grade of T300 or higher; and / or, The second carbon fiber molded fabric uses a grade of T700 or higher; and / or, The third type of carbon fiber molded fabric uses T300 or higher grade.

10. A centrifuge, comprising a centrifuge rotor as described in any one of claims 1 to 5 or a centrifuge rotor prepared by the method described in any one of claims 6 to 9.

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