Centrifuge rotor hanging cup structure

Abstract

The utility model relates to the technical field of centrifugal machines, in particular to a centrifugal machine rotor hanging cup structure which comprises a rotor body and an installation mechanism. The rotor body is provided with a mounting hole and four groups of support arms which are distributed in an annular array and are internally provided with hanging pins, and two hanging pins with opposite axes are provided with hanging cups; the mounting mechanism comprises a fixed cylinder arranged in the support arm, a circular ring coaxially arranged on the hanging pin, a spring with two ends respectively arranged on the circular ring and the fixed cylinder, and a pull rod arranged on the circular ring and slidably connected with the fixed cylinder, and the spring sleeves the outer side of the pull rod. The hanging cup can be well limited, the hanging cup and the hanging pin are prevented from being separated from the clamping state, the hanging cup is easy and convenient to replace, and meanwhile the situation that the hanging cup turns over can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a centrifuge rotor hanging cup structure. Background Art

[0002] The rotor hanging cup structure of a centrifuge refers to the component used to fix centrifuge tubes, which is usually located inside the rotor of the centrifuge. When the centrifuge is running, the rotor rotates at a high speed, and the hanging cup is used to support and fix the centrifuge tubes to ensure that the centrifuge tubes will not fall off or be damaged during the high-speed rotation process. Generally, the hanging cup is installed by engaging the U-shaped groove on the hanging cup with the hanging pin on the rotor.

[0003] Chinese Patent Publication No. CN217512077U discloses a safety structure for a centrifuge rotor hanging cup, including a plurality of hanging cups and a central flat rotor. Rotating connection shafts are provided at the connection positions between the periphery of the flat rotor and the hanging cups. Connection holes are processed at the connection positions between the inner side surfaces of the hanging cups and the rotating connection shafts. Tightening screws are screwed into the connection holes to fix both sides of the hanging cups on the rotating connection shafts, and the heads of the tightening screws sink into the connection holes. This structure directly rotatably connects both ends of all the hanging cups to the flat rotor, with good safety and stability, not easily causing dangerous accidents where the hanging cups are thrown out at high speed, and improving the safety of using medical centrifuges.

[0004] However, the above technical solution has the following deficiencies: When connecting the hanging cup and the hanging pin in this structure, it is connected by tightening screws, which is troublesome to operate and not convenient for installing and disassembling the hanging cup. Moreover, when the hanging cup is placed with test tubes and adapters, the hanging cup will flip, making it difficult to ensure the safety of centrifugal processing. Summary of the Utility Model

[0005] The purpose of the utility model is to address the problems in the background art and propose a centrifuge rotor hanging cup structure that can not only provide a good limiting effect on the hanging cup to prevent the hanging cup from disengaging from the hanging pin engagement state, but also has simple and convenient operation for replacing the hanging cup, and can also prevent the hanging cup from flipping.

[0006] The technical solution of the utility model, a centrifuge rotor hanging cup structure, includes a rotor body and an installation mechanism; installation holes and four groups of arms with hanging pins arranged in an annular array and internally provided are provided on the rotor body; a hanging cup is arranged on two hanging pins with opposite axes; the installation mechanism includes a fixed cylinder arranged inside the arm, a circular ring coaxially arranged on the hanging pin, a spring with both ends respectively arranged on the circular ring and the fixed cylinder, and a pull rod arranged on the circular ring and slidably connected to the fixed cylinder, and the spring is sleeved outside the pull rod.

[0007] Preferably, two symmetrically distributed fixing plates with positioning grooves are provided on the hanging cup, and the hanging pin is adapted to the positioning groove.

[0008] Preferably, guiding blocks are arranged on the circular ring in a horizontal distribution, and sliding grooves for the guiding blocks to slide are arranged on the inner wall of the fixed cylinder.

[0009] Preferably, a grip ball is arranged at one end of the pull rod away from the circular ring.

[0010] Preferably, a bolt is slidably arranged inside the support arm, and one end of the bolt penetrates through the fixed cylinder and is embedded inside the circular ring.

[0011] Preferably, an adapter is arranged inside the hanging cup, and three test tube slots distributed in a linear array and with axes leaning towards one side of the rotor body are arranged on the adapter.

[0012] Preferably, a test tube is arranged inside the test tube slot.

[0013] Preferably, two protective strips horizontally distributed and having inclined surfaces are arranged on each group of support arms, and a limiting plate is arranged on the hanging cup.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] 1. By changing the traditional way of engaging the U-shaped groove with the hanging pin to a plugging way, the utility model avoids the situation that when the adapter is taken out, the hanging cup is lifted, so that the U-shaped groove on the hanging cup is disengaged from the engaging state with the connecting column on the rotor, thus causing the problem that the connection between the hanging cup and the hanging pin is not firm. And with the cooperation of the installation mechanism, the hanging cup can be quickly installed or disassembled, which is convenient for replacing and cleaning the hanging cup, and has good practicability.

[0016] 2. By arranging the limiting plate, the protective strip and the hanging cup with the center of gravity biased towards one side of the rotor body, the utility model avoids the situation that the hanging cup turns over after the test tube and the adapter are placed in the hanging cup, ensuring the use safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is a schematic diagram of the connection between the hanging cup and the hanging pin;

[0019] Figure 3 is a schematic diagram of the structure of the hanging cup;

[0020] Figure 4 is a schematic diagram of the structure of an embodiment of the utility model.

[0021] Reference numerals: 1, rotor body; 2, support arm; 3, hanging pin; 4, suspension cup; 5, fixing plate; 6, positioning groove; 7, adapter; 8, test tube slot; 9, fixing cylinder; 10, ring; 11, pull rod; 12, spring; 13, grip ball; 14, plug pin; 15, guide block; 16, test tube; 17, limit plate; 18, protective strip; 19, mounting hole. Detailed implementation

[0022] Embodiment 1

[0023] As Figures 1-4 shown, a centrifuge rotor suspension cup structure proposed in this embodiment includes a rotor body 1 and a mounting mechanism; a mounting hole 19 and four groups of support arms 2 arranged in a circular array and having hanging pins 3 inside are provided on the rotor body 1, a suspension cup 4 is provided on two hanging pins 3 with opposite axes, two fixing plates 5 symmetrically distributed and having positioning grooves 6 are provided on the suspension cup 4, the hanging pin 3 and the positioning groove 6 are mutually adapted, and the suspension cup 4 can be installed on the hanging pin 3 through the provided positioning groove 6.

[0024] As Figure 2 and Figure 3 shown, the mounting mechanism includes a fixing cylinder 9 provided inside the support arm 2, a ring 10 coaxially provided on the hanging pin 3, a spring 12 with two ends respectively provided on the ring 10 and the fixing cylinder 9, and a pull rod 11 provided on the ring 10 and slidably connected to the fixing cylinder 9, the spring 12 is sleeved outside the pull rod 11, a grip ball 13 is provided at one end of the pull rod 11 away from the ring 10, a plug pin 14 is slidably provided inside the support arm 2, and one end of the plug pin 14 penetrates through the fixing cylinder 9 and is embedded inside the ring 10.

[0025] Horizontal guide blocks 15 are provided on the ring 10, a sliding groove for the guide blocks 15 to slide is provided on the inner wall of the fixing cylinder 9, and the setting of the guide blocks 15 and the sliding groove is used to guide the horizontal movement of the ring 10 to prevent the ring 10 from twisting and causing the plug pin 14 to be unable to be inserted into the ring 10.

[0026] In this embodiment, the suspension cup 4 can be conveniently installed or disassembled through the provided mounting mechanism. When installing the suspension cup 4, hold the grip ball 13 and pull the pull rod 11 outwards, the pull rod 11 drives the ring 10 and the hanging pin 3 to move, and at the same time the ring 10 compresses the spring 12, then align the positioning groove 6 with the hanging pin 3, release the grip ball 13, under the action of the spring 12, the ring 10 pushes the hanging pin 3 into the positioning groove 6, and finally put the plug pin 14 into the support arm 2 until the bottom end of the plug pin 14 is inserted into the ring 10, that is, the fixed installation of the suspension cup 4 is completed.

[0027] When it is necessary to disassemble, replace or clean the suspension cup 4, first remove the pin 14, and then hold the grip ball 13 and pull the pull rod 11 to disengage the hanging pin 3 from the positioning groove 6 to complete the disassembly. The operation is simple and convenient, and it avoids the upward movement of the suspension cup 4 due to the frictional force when the adapter 7 is taken out from the inner wall of the suspension cup 4, and further causes the U-shaped groove on the suspension cup 4 to disengage from the engagement state with the hanging pin 3, resulting in a safety accident due to the insecure connection of the suspension cup 4.

[0028] Embodiment 2

[0029] As Figure 1 、 Figure 3 and Figure 4 shown, a centrifuge rotor suspension cup structure proposed in this embodiment, compared with Embodiment 1, in this embodiment, an adapter 7 is arranged inside the suspension cup 4, and three test tube slots 8 are arranged on the adapter 7 in a linear array distribution and the axes thereof are inclined towards the rotor body 1 side. A test tube 16 is arranged inside the test tube slot 8.

[0030] Two protective strips 18 which are horizontally distributed and have inclined surfaces are arranged on each group of support arms 2, and a limiting plate 17 is arranged on the suspension cup 4.

[0031] In this embodiment, when centrifugation is required, first place the test tube 16 into the test tube slot 8, and then place the adapter 7 into the suspension cup 4. Since the overall center of gravity of the suspension cup 4 deflects towards the rotor body 1 side under the action of the test tube 16 after the adapter 7 is placed inside the suspension cup 4, the suspension cup 4 will rotate. When the limiting plate 17 on the suspension cup 4 fits with the inclined surface of the protective strip 18, the suspension cup 4 remains stationary. At this time, the suspension cup 4 reaches the maximum rotation angle, avoiding the situation of the suspension cup 4 flipping when the test tube 16 is placed, and the inclination angle of the test tube 16 during centrifugation can also meet the standard of the centrifugation effect.

[0032] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to this. Various changes can be made without departing from the gist of the present invention within the knowledge scope of those skilled in the art to which the present invention pertains.

Claims

1. A centrifuge rotor hanging cup structure, characterized in that: include: A rotor body (1) is provided with a mounting hole (19) and four groups of arms (2) distributed in an annular array and provided with hanging pins (3) therein, and hanging cups (4) are provided on the hanging pins (3) with two axes facing each other; The mounting mechanism comprises a fixing cylinder (9) arranged inside the support arm (2), a circular ring (10) coaxially arranged on the hanging pin (3), a spring (12) with two ends respectively arranged on the circular ring (10) and the fixing cylinder (9), and a pull rod (11) arranged on the circular ring (10) and slidably connected to the fixing cylinder (9), wherein the spring (12) is sleeved on the outside of the pull rod (11).

2. A centrifuge rotor hanging cup structure according to claim 1, characterized in that: The hanging cup (4) is provided with two symmetrically distributed fixing plates (5) having positioning grooves (6), and the hanging pin (3) and the positioning grooves (6) are adapted to each other.

3. The centrifuge rotor hanging cup structure according to claim 1, characterized in that: The circular ring (10) is provided with horizontally distributed guide blocks (15), and the inner wall of the fixed cylinder (9) is provided with a sliding groove for the guide blocks (15) to slide.

4. The centrifuge rotor hanging cup structure according to claim 1, characterized in that: A grip ball (13) is provided at one end of the pull rod (11) away from the ring (10).

5. The centrifuge rotor hanging cup structure according to claim 1, characterized in that: A latch (14) is slidably arranged inside the support arm (2), and one end of the latch (14) penetrates the fixing tube (9) and is embedded in the inside of the circular ring (10).

6. The centrifuge rotor hanging cup structure according to claim 1, characterized in that: An adapter (7) is arranged inside the hanging cup (4), and the adapter (7) is provided with three test tube slots (8) distributed in a linear array and with the axis close to one side of the rotor body (1).

7. A centrifuge rotor hanging cup structure according to claim 6, characterized in that: A test tube (16) is arranged inside the test tube groove (8).

8. The centrifuge rotor hanging cup structure according to claim 1, characterized in that: Each group of supporting arms (2) is provided with two horizontally distributed protection strips (18) having inclined surfaces, and a limiting plate (17) is provided on the hanging cup (4).

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