Anti-overturning centrifugal machine horizontal rotor

Abstract

The utility model relates to the field of centrifugal machines, in particular to an anti-overturning centrifugal machine horizontal rotor which comprises a rotor body and a fixing mechanism. The rotor body is provided with six connecting arms which are distributed in an annular array mode. Insertion columns with hanging pins at the two ends are arranged in the connecting arms. The fixing mechanism comprises an embedding plate, two stabilizing columns symmetrically distributed on the embedding plate, two positioning holes allowing the stabilizing columns to be inserted and formed in the inserting columns, threaded holes formed in the inserting columns and fixing bolts penetrating through the embedding plate and in threaded connection with the threaded holes, and rectangular grooves matched with the embedding plate are formed in the connecting arms. The risk that the test tube is damaged due to the fact that the test tube opening is turned over can be avoided, and the hanging pin and the turning-over preventing structure are easy and convenient to mount and dismount and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of centrifuges, in particular to a horizontal rotor of a centrifuge with anti - overturning function. Background Technique

[0002] A horizontal rotor is a type of centrifuge, which consists of three major components: a rotor body, a hanging cup, and an adapter. During the centrifugation process, the horizontal rotor makes the sample precipitate and concentrate at the bottom of the centrifuge tube. The characteristics of the horizontal rotor include the ability to achieve large - volume separation, convenience in layer - by - layer extraction from the centrifuge tube, and relatively high rotational speed and centrifugal force.

[0003] Chinese Patent Publication No. CN216910625U discloses a horizontal rotor of a centrifuge with anti - overturning function, which includes a horizontally arranged rotor body and an identification disk located below it. A limiting disk is concentrically installed between the rotor body and the identification disk. A plurality of hanging cups are rotatably connected to the peripheral side of the rotor body, and the rotation planes of the hanging cups are perpendicular to the horizontal plane and the open ends face the center of the rotor body. Test tubes can be loaded into the hanging cups from the open ends facing the rotor body. The hanging cups are in a static state, and their bottoms to the open ends are vertically arranged. The outer peripheral end face of the limiting disk abuts against one side face of the hanging cup close to the center of the rotor body; when the hanging cups are in the centrifugal state, the open ends of the test tubes correspondingly abut against the outer peripheral top face of the limiting disk. This horizontal rotor of the centrifuge with anti - overturning function can prevent the hanging cups in the centrifugal state from overturning; and can keep the hanging cups in the static state in the vertical position to ensure the centrifugation effect.

[0004] However, the above - mentioned technical solution has the following deficiencies: The design of the hanging cups of this horizontal rotor makes the centers of gravity of the hanging cups, the adapters and the test tubes deviate to one side of the limiting disk. In order to prevent the test tubes from overturning, the mouths of the test tubes when the hanging cups are in the horizontal position abut against the limiting disk. Although this method can prevent the test tubes from overturning, there is a risk of damaging the test tubes, and the installation and disassembly operations of the limiting disk and the hanging pins are not convenient, which is not conducive to use. Summary of the Utility Model

[0005] The purpose of the present utility model is to address the problems existing in the background technique and propose a horizontal rotor of a centrifuge with anti - overturning function, which can avoid the risk of damaging the test tubes caused by anti - overturning through the test tube mouths themselves, and the installation and disassembly of the hanging pins and the anti - overturning structure are simple and convenient, which is convenient for use.

[0006] Technical solution of the utility model, an anti - overturning centrifuge horizontal rotor, comprising a rotor body and a fixing mechanism; six connecting arms are arranged on the rotor body in an annular array distribution, and an inserting column with hanging pins at both ends is arranged inside the connecting arm; the fixing mechanism includes a fitting plate, two stabilizing columns symmetrically distributed on the fitting plate, two positioning holes provided on the inserting column for the stabilizing columns to insert into, a threaded hole provided on the inserting column, and a fixing bolt passing through the fitting plate and threadedly connected with the threaded hole. A rectangular groove adapted to the fitting plate is arranged on the connecting arm.

[0007] Preferably, an installation hole for inserting the main shaft is arranged on the rotor body.

[0008] Preferably, a convex ring is arranged on the hanging pin, and the projection of the hanging pin and the convex ring on the inserting column along the axial center line of the inserting column is included in the cross - section part of the inserting column.

[0009] Preferably, a hanging cup is arranged between two adjacent connecting arms. Two symmetrically distributed sliding grooves are arranged on the hanging cup, and the hanging pin and the convex ring are slidably connected inside the sliding grooves.

[0010] Preferably, an adapter with multiple test - tube slots is arranged on the hanging cup.

[0011] Preferably, a limiting plate is arranged between two adjacent connecting arms, and a clamping component is arranged inside the limiting plate.

[0012] Preferably, the clamping component includes two symmetrically distributed and slidably connected clamping blocks on the limiting plate, four symmetrically distributed springs with both ends respectively arranged on the clamping blocks and the limiting plate, and two guiding blocks arranged on the clamping blocks. A clamping groove for the clamping blocks to embed is arranged on the connecting arm, and a guiding groove for the guiding blocks to slide is arranged inside the limiting plate.

[0013] Preferably, the limiting plate is inclined, and the degree of the included angle between the symmetry plane and the vertical direction is 30 degrees.

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

[0015] 1. The utility model can quickly install and disassemble the inserting column through the arranged fixing mechanism, and the operation is simple. At the same time, it avoids the shaking of the inserting column caused by the processing gap between the inserting column and the connecting wall, ensuring the stability of the inserting column during use.

[0016] 2. The utility model can still play a role in preventing the hanging cup from overturning excessively and causing the test tubes to fall without changing the center of gravity of the adapter through the arranged limiting plate. It does not require the test tubes themselves to act on anti - overturning, and the arranged clamping component can quickly install the limiting plate, having good practicability. Description of the Drawings

[0017] Figure 1Schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 Schematic connection diagram of the rotor body and the connecting arm;

[0019] Figure 3 Exploded view of the connecting arm;

[0020] Figure 4 Schematic structural diagram of the hanging cup;

[0021] Figure 5 Schematic cross-sectional structural diagram of the limiting plate.

[0022] Reference numerals: 1, rotor body; 2, connecting arm; 3, inserting post; 4, hanging pin; 5, convex ring; 6, fitting plate; 7, stabilizing post; 8, positioning hole; 9, fixing bolt; 10, threaded hole; 11, rectangular groove; 12, hanging cup; 13, adapter; 14, test tube slot; 15, limiting plate; 16, clamping block; 17, spring; 18, guiding block; 19, clamping slot; 20, mounting hole. Detailed implementation manners

[0023] Embodiment 1

[0024] As Figures 1 - 5 shown, a non-overturning centrifuge horizontal rotor proposed in this embodiment includes a rotor body 1 and a fixing mechanism; six connecting arms 2 distributed in an annular array are provided on the rotor body 1, an inserting post 3 with hanging pins 4 at both ends is arranged inside the connecting arm 2, a mounting hole 20 for inserting the main shaft is provided on the rotor body 1, and the mounting hole 20 is used to connect a driving shaft for driving the rotor body 1 to rotate.

[0025] As Figure 3 shown, the fixing mechanism includes a fitting plate 6, two stabilizing posts 7 symmetrically distributed on the fitting plate 6, two positioning holes 8 for inserting the stabilizing posts 7 and arranged on the inserting post 3, a threaded hole 10 arranged on the inserting post 3, and a fixing bolt 9 passing through the fitting plate 6 and threadedly connected to the threaded hole 10, and a rectangular groove 11 adapted to the fitting plate 6 is provided on the connecting arm 2.

[0026] A convex ring 5 is arranged on the hanging pin 4, and the projection of the hanging pin 4 and the convex ring 5 along the axis center line of the inserting post 3 on the inserting post 3 is included in the cross-sectional part of the inserting post 3, so as to prevent the hanging pin 4 and the convex ring 5 from abutting against the outside of the connecting arm 2 when the inserting post 3 is inserted into the connecting arm 2.

[0027] In this embodiment, the fixing mechanism can stably and conveniently install and disassemble the insertion post 3. When installing the insertion post 3, first insert the insertion post 3 into the connecting arm 2, then insert the two stabilizing posts 7 into the positioning holes 8 respectively through the fitting plate 6 until the fitting plate 6 is completely embedded in the rectangular groove 11, and then screw the fixing bolt 9 into the threaded hole 10 to complete the fixed installation of the insertion post 3. And due to the setting of the fitting plate 6 and the stabilizing posts 7, it is possible to avoid the shaking of the insertion post 3 caused by the hole-shaft clearance between the insertion post 3 and the connecting arm 2, ensuring the stable use of the equipment.

[0028] Embodiment Two

[0029] As Figure 1 、 Figure 2 and Figure 4 shown, a horizontally rotatable centrifuge rotor with anti-tipping function proposed in this embodiment. Compared with Embodiment One, in this embodiment, a cup holder 12 is provided between two adjacent connecting arms 2. Two symmetrically distributed chutes are provided on the cup holder 12. The hanging pin 4 and the convex ring 5 are slidably connected inside the chute. An adapter 13 with a plurality of test tube slots 14 is provided on the cup holder 12.

[0030] In this embodiment, the test tubes are placed through the test tube slots 14 on the adapter 13, then the adapter 13 is loaded into the cup holder 12, and finally the convex ring 5 is slid to the top of the chute through the chute of the cup holder 12 to complete the centrifugal installation operation of the test tubes.

[0031] Embodiment Three

[0032] As Figure 1 、 Figure 3 and Figure 5 shown, a horizontally rotatable centrifuge rotor with anti-tipping function proposed in this embodiment. Compared with Embodiment Two, in this embodiment, a limiting plate 15 is provided between two adjacent connecting arms 2, and a clamping component is provided inside the limiting plate 15.

[0033] The clamping component includes two symmetrically distributed and slidably connected clamping blocks 16 on the limiting plate 15, four symmetrically distributed springs 17 with two ends respectively arranged on the clamping blocks 16 and the limiting plate 15, and two guiding blocks 18 arranged on the clamping blocks 16. A clamping groove 19 for the clamping blocks 16 to be embedded is provided on the connecting arm 2, and a guiding groove for the guiding blocks 18 to slide is provided inside the limiting plate 15.

[0034] The limiting plate 15 is inclined, and the degree of the included angle between the symmetry plane and the vertical direction is 30 degrees. This degree is not a uniquely determined value. Under the condition of ensuring the qualified centrifugal effect, this degree can be appropriately changed during design.

[0035] In this embodiment, during the centrifugation process, the opening side of the hanging cup 12 deflects towards the center line of the rotor body 1. When the hanging cup 12 deflects 150 degrees around the axis center line of the hanging pin 4, the wall of the hanging cup 12 fits against the plate surface of the limiting plate 15, keeping the inclination angle of the hanging cup 12 unchanged and preventing the hanging cup 12 from flipping. When the test tube in the test tube slot 14 is filled but finally not completely filled, the center of gravity of the hanging cup 12 shifts to both sides, and then the hanging cup 12 becomes unbalanced and deflects. Whether it rotates forward or backward, the side wall of the hanging cup 12 finally abuts against the limiting plate 15, and at this time the test tube mouth faces obliquely upward, avoiding the risk of flipping and having good practicability.

[0036] When installing the limiting plate 15, first push one side of the block 16 into one side of the slot 19, compressing the spring 17 connected to the block 16, and then push the other side of the block 16 into the other side of the slot 19, thus completing the fixed installation. The operation is simple and convenient.

[0037] The above has described in detail the embodiments of the present utility model in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those skilled in the art to which the present utility model pertains.

Claims

1. A horizontal rotor of a centrifuge that prevents overturning, characterized in that, Comprising: A rotor body (1) provided with six connecting arms (2) distributed in an annular array thereon, and an insertion post (3) with hanging pins (4) at both ends is arranged inside the connecting arm (2); A fixing mechanism, including a fitting plate (6), two stabilizing columns (7) symmetrically distributed on the fitting plate (6), two positioning holes (8) for the stabilizing columns (7) to be inserted into and arranged on the insertion post (3), a threaded hole (10) arranged on the insertion post (3), and a fixing bolt (9) passing through the fitting plate (6) and threadedly connected to the threaded hole (10). A rectangular groove (11) adapted to the fitting plate (6) is arranged on the connecting arm (2).

2. The horizontal rotor of a centrifuge with anti-overturning function according to claim 1, characterized in that, An installation hole (20) for inserting a main shaft is arranged on the rotor body (1).

3. The horizontal rotor of a centrifuge with anti-overturning function according to claim 1, characterized in that, A convex ring (5) is arranged on the hanging pin (4), and the projection of the hanging pin (4) and the convex ring (5) along the axial center line of the insertion post (3) on the insertion post (3) is included in the cross-sectional part of the insertion post (3).

4. A horizontal rotor of a centrifuge with anti-overturning function according to claim 1, wherein A hanging cup (12) is arranged between two adjacent connecting arms (2). Two symmetrically distributed sliding grooves are arranged on the hanging cup (12), and the hanging pin (4) and the convex ring (5) are slidably connected inside the sliding grooves.

5. The horizontal rotor of a centrifuge with anti-overturning function according to claim 4, characterized in that, An adapter (13) with a plurality of test tube slots (14) is arranged on the hanging cup (12).

6. The horizontal rotor of a centrifuge with anti-overturning function according to claim 4, characterized in that, A limiting plate (15) is arranged between two adjacent connecting arms (2), and a clamping component is arranged inside the limiting plate (15).

7. A horizontal rotor of a centrifuge with anti-tipping function according to claim 6, characterized in that, The clamping component includes two symmetrically distributed and slidably connected clamping blocks (16) on the limiting plate (15), four symmetrically distributed springs (17) with both ends respectively arranged on the clamping blocks (16) and the limiting plate (15), and two guiding blocks (18) arranged on the clamping blocks (16). A clamping groove (19) for the clamping blocks (16) to be embedded is arranged on the connecting arm (2), and a guiding groove for the guiding blocks (18) to slide is arranged inside the limiting plate (15).

8. A horizontal rotor of a centrifuge for preventing overturning according to claim 7, characterized in that, The limiting plate (15) is inclined, and the degree of the included angle between the symmetry plane and the vertical direction is 30 degrees.

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