Universal combined rotating head for centrifugal machine

Abstract

The utility model relates to the technical field of centrifugal machine accessories, and particularly discloses a universal combined rotating head of a centrifugal machine, which comprises a rotor body and a hanging cup, the rotor body is detachably connected with a protective cover, the protective cover comprises an annular bottom shell which is detachably installed at the bottom of the rotor body, the edge of the annular bottom shell upwards forms a side wall, the top of the side wall upwards is provided with a connecting ring matched with the outer diameter of the rotor body, and the connecting ring is detachably connected with the side face of the rotor body through a pin; through the arrangement of the protective cover, other parts can be wrapped in the protective cover, the other parts can be prevented from exploding and flying out due to self defects, and a reliable protection effect is achieved; meanwhile, due to the connection with the rotor body, the centrifugal load generated by the hanging cup and the test tube can be borne; and the included angle a is formed between the side upper wall and the connecting ring, and the angle between the side upper wall and the side lower wall is formed, so that wind resistance and wind noise can be effectively reduced, and the combined swivel can run in a high-speed section.

Description

Technical Field

[0001] This utility model relates to the technical field of centrifuge accessories, specifically to a universal combination rotor for centrifuges. Background Technology

[0002] The samples requiring separation vary greatly across different fields, and the required rotational speed, centrifugal force, and centrifugation time differ significantly depending on the sample. Currently, the rotational speed of ordinary centrifuge rotors in China is limited by factors such as air resistance, structural strength, and capacity, making them unsuitable for sample separation in most specific fields. Therefore, to address these issues, our company offers a universal combined rotor for centrifuges, enabling operation both above and below 10,000 r / min, significantly expanding the application range of automated centrifuge rotors. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a universal combined rotor for centrifuges.

[0004] The present invention relates to a universal combined rotor for centrifuges, comprising a rotor body and a hanging cup. The rotor body has a conical hole in the center for mounting on a centrifuge. The outer edge of the rotor body has several openings for mounting the hanging cup. The inner walls on both sides of the openings have hanging pin holes, and double-headed pins for mounting the hanging cups are installed inside the hanging pin holes.

[0005] The top of the cup is provided with a hanging ear that can be attached to a double-headed pin, and the center of gravity of the hanging ear is offset to one side along the central axis.

[0006] A protective cover is detachably connected to the rotor body. The protective cover includes an annular bottom shell that is detachably installed at the bottom of the rotor body. A side wall is formed on the edge of the annular bottom shell. A connecting ring that is adapted to the outer diameter of the rotor body is provided on the top of the side wall. The connecting ring is detachably connected to the side of the rotor body by a pin.

[0007] A protective cavity is formed between the surface of the rotor body and the protective cover to provide rotation space for the hanging cup; the side wall includes a lower side wall connected to the annular bottom shell and an upper side wall connected to the connecting ring, and an included angle α is formed between the upper side wall and the connecting ring.

[0008] As a further improvement of this utility model, a lower baffle wall is fixedly connected to the bottom edge of the inner wall of the opening.

[0009] As a further improvement of this utility model, the hanging cup has a thick-walled side and a thin-walled side formed along the central axis of the hanging ear, and a tail cone is formed at the bottom of the hanging cup. The tail cone is tapered on the thin-walled side and semi-cylindrical on the thick-walled side.

[0010] As a further improvement of this utility model, the double-headed pin includes a pin post installed inside the pin hole, and pin heads are installed at both ends of the pin post. The two pin heads are respectively located inside two adjacent openings, and the ends of the pin heads are fixedly connected to a round boss for attaching the hanging ear.

[0011] As a further improvement of this utility model, the upper surface of the rotor body is provided with a limiting hole for communicating with the hanging pin hole, and a fixing pin for fixing the double-headed pin is installed in the limiting hole.

[0012] The double-headed pin has a half-waist hole on its pin post that matches the fixing pin.

[0013] As a further improvement of this utility model, a groove with the same center as the conical hole is provided at the bottom center of the rotor body, and an identification sleeve and a positioning pin are installed inside the groove.

[0014] As a further improvement of this utility model, the bottom edge of the identification sleeve is circumferentially distributed with several magnets.

[0015] As a further improvement of this utility model, the cup can fit against the upper side wall after rotation, and an angle b is formed between the upper side wall and the lower side wall.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model, through the setting of the protective cover, can wrap other parts inside, which can prevent other parts from exploding and flying out due to their own defects, thus playing a reliable protective role; at the same time, due to the connection with the rotor body, it can bear the centrifugal load generated by the hanging cup and test tube; and through the included angle α formed between the upper side wall and the connecting ring, as well as the angle between the upper side wall and the lower side wall, it can effectively reduce wind resistance and wind noise, enabling the combined rotor to operate in the high-speed range.

[0018] 2. After removing the protective cover, the rotor can be used for centrifugal operation in the low-speed range, thereby achieving the maximum effective centrifugal radius in the low-speed range and making the centrifugal force as large as possible; that is, the rotor can be used as an angular rotor or as a horizontal rotor. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a front view and a sectional view of the combined rotor in its returned-to-position state after centrifugation is completed.

[0021] Figure 2 These are the front view and sectional view of the combined rotor in centrifugation state during centrifugation according to this utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional view structure of this utility model;

[0023] Figure 4 The rotor in centrifugal state is shown in the front view and sectional view after the protective cover has been removed.

[0024] Figure 5 These are the front view and sectional view of the rotor body of this utility model;

[0025] Figure 6 This is a front view, side view, sectional view, and three-dimensional view of the cup holder of this utility model;

[0026] Figure 7 These are the front view and side view of the double-headed pin of this utility model.

[0027] In the diagram: 1. Protective cover; 1.1. Annular bottom shell; 1.2. Upper side wall; 1.3. Lower side wall; 1.4. Connecting ring;

[0028] 2. Rotor body; 2.1 Lower baffle wall; 2.2 Opening; 2.3 Tapered hole; 2.4 Hanging pin hole; 2.5 Limiting hole;

[0029] 3. Cup-hanging part; 3.1. Ear-hanging part; 3.2. Tail cone; 3.3. Thick-walled side; 3.4. Thin-walled side;

[0030] 4. Test tube; 5. Identification sleeve; 6. Orientation pin; 7. Magnet;

[0031] 8. Double-headed pin; 8.1. Half-waist hole; 8.2. Pin head; 8.3. Pin post; 8.4. Round boss;

[0032] 9. Fixing pin. Detailed Implementation

[0033] The following drawings will disclose several embodiments of this utility model. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these physical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0034] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] Please see Figures 1-7 The centrifuge universal combined rotor of this utility model includes a rotor body 2 and a hanging cup 3. The rotor body 2 has a conical hole 2.3 in the center for assembly on the centrifuge; the outer edge of the rotor body 2 has a number of openings 2.2 for installing the hanging cup 3. The inner walls on both sides of the openings 2.2 are provided with hanging pin holes 2.4, and double-headed pins 8 for installing the hanging cup 3 are installed inside the hanging pin holes 2.4.

[0036] The top of the hanging cup 3 is provided with a hanging ear 3.1 that can be hung on the double-headed pin 8. The center of gravity of the hanging ear 3.1 is shifted to one side along the central axis.

[0037] A protective cover 1 is detachably connected to the rotor body 2. The protective cover 1 includes an annular bottom shell 1.1 detachably installed at the bottom of the rotor body 2. The edge of the annular bottom shell 1.1 forms a side wall upward. The top of the side wall is provided with a connecting ring 1.4 that is adapted to the outer diameter of the rotor body 2. The connecting ring 1.4 is detachably connected to the side of the rotor body 2 by a pin.

[0038] A protective cavity is formed between the surface of the rotor body 2 and the protective cover 1 to provide rotation space for the hanging cup 3; the side wall includes a lower side wall 1.3 connected to the annular bottom shell 1.1 and an upper side wall 1.2 connected to the connecting ring 1.4, and an included angle α is formed between the upper side wall 1.2 and the connecting ring 1.4;

[0039] Furthermore, the protective cover 1 is formed in one piece, which makes the smoothness easy to control. The width of the upper side wall 1.2 is such that the cup 3 can fit against the upper side wall 1.2 after rotation. An angle b is formed between the upper side wall 1.2 and the lower side wall 1.3. Preferably, the angle b is equal to 90 degrees. When the angle b is set to 90 degrees, it can effectively avoid the lower side wall in the side wall from interfering with and blocking the rotation of the cup 3. The angles a and b can be selected within the range of 0-90°. In this embodiment, the angle a is 45 degrees and the angle b is 90°.

[0040] Working principle:

[0041] When operating at high speeds above 10,000 r / min, the protective cover 1 is connected to the rotor body 2. The protective cover 1 can enclose other parts inside, preventing other parts from exploding due to their own defects, thus providing reliable protection. At the same time, due to its connection with the rotor body 2, it can bear the centrifugal load generated by the hanging cup 3 and the test tube 4. Furthermore, the included angle α formed between the upper side wall 1.2 and the connecting ring 1.4, as well as the angle between the upper side wall 1.2 and the lower side wall 1.3, can effectively reduce wind resistance and wind noise, enabling the combined rotor to operate in the high-speed range.

[0042] When operating at low speeds below 10,000 r / min, the protective cover 1 needs to be removed. After removing the protective cover 1, the rotor can be used for centrifugal operation in the low-speed range, thereby achieving the maximum effective centrifugal radius in the low-speed range and maximizing the centrifugal force. That is, the rotor can be used as an angular rotor or as a horizontal rotor.

[0043] Specifically, the hanging cup 3 has a thick-walled side 3.3 and a thin-walled side 3.4 formed along the central axis of the hanging ear 3.1. A tail cone 3.2 is formed at the bottom of the hanging cup 3. The tail cone 3.2 is tapered on the side of the thin-walled side 3.4 and semi-cylindrical on the side of the thick-walled side 3.3. By changing the mass distribution of the hanging cup 3, the rotor has an automatic return function; thus, it can be used in both ordinary centrifuges and automated centrifuges.

[0044] Furthermore, a lower baffle 2.1 is fixedly connected to the bottom edge of the inner wall of the opening 2.2. The lower baffle 2.1 is mainly used to limit the return angle of the hanging cup 3. In this way, the return angle of the hanging cup 3 will not change after each centrifugation, which is conducive to the robot arm to repeatedly grasp.

[0045] Furthermore, the double-headed pin 8 includes a pin post 8.3 installed inside the pin mounting hole 2.4. Pin heads 8.2 are installed at both ends of the pin post 8.3, with each pin head 8.2 located inside an adjacent opening 2.2. A round boss 8.4 for attaching to the hanging lug 3.1 is fixedly connected to the end of each pin head 8.2. A limiting hole 2.5 for communicating with the pin mounting hole 2.4 is provided on the upper surface of the rotor body 2. A fixing pin 9 for fixing the double-headed pin 8 is installed in the limiting hole 2.5. A semi-circular hole 8.1 adapted to the fixing pin 9 is provided on the pin post 8.3 of the double-headed pin 8.

[0046] The hanging cup 3 is installed at each of the openings 2.2 of the rotor body 2. The model of the opening 2.2 can be set according to the requirements to expand the capacity. It is mainly used to support the test tube 4. Its center of gravity is offset from the center of the hanging ear 3.1, generating a deflection torque to overcome the friction torque between the hanging ear 3.1 and the pin head 8.2. When the centrifugation ends, the hanging cup 3 will move itself and the test tube 4 will deflect to press against the lower baffle 2.1, thus ensuring that the position of the test tube 4 is always relatively fixed and vertical. Its double-headed pin 8 is installed in the hanging pin hole 2.4 of the rotor body 2. It is mainly used to share the centrifugal load of the hanging cup 3 and the test tube 4, and at the same time, it can ensure that the hanging cup 3 swings along the pin head 8.2.

[0047] The bottom center of the rotor body 2 has a groove with the same center as the conical hole 2.3. The identification sleeve 5 and the orientation pin 6 are installed inside the groove. Several magnets 7 are distributed around the bottom edge of the identification sleeve 5.

[0048] Its identification sleeve 5 is located at the bottom of the rotor body 2 and is wrapped by the rotor body 2. It is used to connect the magnet 7 and the orientation pin 6. The detachable structure facilitates the switching of different rotor numbers. Its orientation pin 6 is located inside the identification sleeve 5. Its main function is to ensure that the repeat positioning of the rotor is consistent with the initial positioning, so that the initial zero position will not be readjusted due to the replacement of the rotor. Its magnet 7 is located below the identification sleeve 5. It mainly provides magnetic signals for rotor identification, rotor station positioning and real-time speed signal feedback.

[0049] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made to the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A universal combined rotor for centrifuges, comprising a rotor body (2) and a hanging cup (3), characterized in that: The rotor body (2) has a conical hole (2.3) in the center for mounting on a centrifuge; the outer edge of the rotor body (2) has several openings (2.2) for installing hanging cups (3), and the inner walls on both sides of the openings (2.2) are provided with hanging pin holes (2.4), and double-headed pins (8) for installing hanging cups (3) are installed inside the hanging pin holes (2.4); The top of the hanging cup (3) is provided with a hanging ear (3.1) that can be hung on the double-headed pin (8), and the center of gravity of the hanging ear (3.1) is offset to one side along the central axis; A protective cover (1) is detachably connected to the rotor body (2). The protective cover (1) includes an annular bottom shell (1.1) detachably installed at the bottom of the rotor body (2). The edge of the annular bottom shell (1.1) forms a side wall upward. The top of the side wall is provided with a connecting ring (1.4) that is adapted to the outer diameter of the rotor body (2). The connecting ring (1.4) is detachably connected to the side of the rotor body (2) by a pin. A protective cavity is formed between the surface of the rotor body (2) and the protective cover (1) to provide rotation space for the hanging cup (3); the side wall includes a lower side wall (1.3) connected to the annular bottom shell (1.1) and an upper side wall (1.2) connected to the connecting ring (1.4), and an included angle α is formed between the upper side wall (1.2) and the connecting ring (1.4).

2. The centrifuge universal combined rotor according to claim 1, characterized in that: The bottom edge of the inner wall of the opening (2.2) is fixedly connected to a lower baffle (2.1).

3. A universal combined rotor for centrifuges according to claim 1, characterized in that: The hanging cup (3) has a thick-walled side (3.3) and a thin-walled side (3.4) formed along the central axis of the hanging ear (3.1). The bottom of the hanging cup (3) has a tail cone (3.2). The tail cone (3.2) is tapered on the side of the thin-walled side (3.4) and semi-cylindrical on the side of the thick-walled side (3.3).

4. A universal combined rotor for centrifuges according to claim 1, characterized in that: The double-headed pin (8) includes a pin post (8.3) installed inside the pin hole (2.4). Both ends of the pin post (8.3) are equipped with pin heads (8.2). The two pin heads (8.2) are located inside two adjacent openings (2.2), and the ends of the pin heads (8.2) are fixedly connected to a round boss (8.4) for hooking the lug (3.1).

5. A universal combined rotor for centrifuges according to claim 1, characterized in that: The upper surface of the rotor body (2) is provided with a limiting hole (2.5) for communicating with the hanging pin hole (2.4), and a fixing pin (9) for fixing the double-headed pin (8) is installed in the limiting hole (2.5); The pin (8.3) of the double-headed pin (8) has a half-waist hole (8.1) that is compatible with the fixing pin (9).

6. A universal combined rotor for centrifuges according to claim 1, characterized in that: The rotor body (2) has a groove at the center of its bottom that is concentric with the conical hole (2.3). An identification sleeve (5) and a directional pin (6) are installed inside the groove.

7. A universal combined rotor for centrifuges according to claim 6, characterized in that: The bottom edge of the identification sleeve (5) is circumferentially distributed with several magnets (7).

8. A universal combined rotor for centrifuges according to claim 1, characterized in that: The hanging cup (3) can fit against the upper side wall (1.2) after rotation, and an angle b is formed between the upper side wall (1.2) and the lower side wall (1.3).

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