CN215541832U

CN215541832U - Centrifuge with easily-detachable rotor

Info

Publication number: CN215541832U
Application number: CN202122304126.6U
Authority: CN
Inventors: 杨俊�; 杨大鸣
Original assignee: Hunan Pingke Scientific Instrument Co ltd
Current assignee: Hunan Pingke Scientific Instrument Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-01-18
Anticipated expiration: 2031-09-23

Abstract

A centrifuge with an easily detachable rotor comprises a rotor, wherein the rotor is connected to a motor shaft; the center of the upper part of the rotor is provided with a mounting hole, and a motor shaft is fixed with the rotor through a locking nut arranged in the mounting hole; a C-shaped clamp spring or a central screw rod is fixedly arranged above the locking nut in the mounting hole; the aperture of the C-shaped clamp spring is smaller than the outer diameter of the lock nut; the middle of the central screw rod is provided with a through hole, and the aperture of the through hole at the lower end of the central screw rod is smaller than the outer diameter of the locking nut. According to the utility model, the locking nut and the C-shaped clamp spring or the central screw matched with the locking nut are arranged in the mounting hole of the rotor, when the centrifuge rotor needs to be dismounted from the motor shaft, the locking nut is unscrewed by using a spanner, the position of the locking nut in the mounting hole is raised, the locking nut is propped against the C-shaped clamp spring or the central screw, the rotor is driven to move upwards, and the centrifuge rotor is quickly dismounted.

Description

Centrifuge with easily-detachable rotor

Technical Field

The utility model relates to the technical field of centrifugal equipment, in particular to a centrifugal machine with a rotor easy to disassemble.

Background

A centrifugal apparatus, also called a centrifuge, is a machine for separating components from liquid and solid particles or a mixture of liquid and liquid by using centrifugal force, because the centrifuge has the function of rapidly separating substances with different densities, the centrifuge is widely used in the fields of chemical industry, pharmacy, medical treatment, scientific research and experiment, etc.

During actual production and experiment, need change centrifuge rotor according to centrifuge rotor rotational speed, centrifuging tube type and the difference of demands such as centrifuging tube number when carrying out centrifugal operation. Traditional centrifuge rotor, the motor shaft need pass whole rotor when the installation, then uses lock nut and the screw-thread fit of motor shaft upper end, makes centrifuge rotor and motor shaft fixed through rotatory lock nut. When the locking nut is over-tightened or the time for fixing the centrifuge rotor and the motor shaft is too long, the centrifuge rotor and the motor shaft are likely to be tightly attached together, and after the locking nut is loosened, the centrifuge rotor cannot be quickly and conveniently detached from the motor shaft.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a centrifugal machine with an easily detachable rotor.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a centrifuge with an easily detachable rotor comprises a rotor, wherein the rotor is connected to a motor shaft; the rotor is provided with a plurality of mounting grooves for placing centrifuge tubes; the center of the upper part of the rotor is provided with a mounting hole, and the motor shaft is fixed with the rotor through a locking nut arranged in the mounting hole; a C-shaped clamp spring or a central screw rod is fixedly arranged above the locking nut in the mounting hole; the aperture of the C-shaped clamp spring is smaller than the outer diameter of the lock nut; the middle of the central screw rod is provided with a through hole, and the aperture of the through hole at the lower end of the central screw rod is smaller than the outer diameter of the locking nut.

Above-mentioned centrifuge of rotor is easily dismantled, it is preferred, on the mounting hole inner wall, be provided with the draw-in groove in lock nut's top, C type jump ring sets up in the draw-in groove.

Above-mentioned centrifuge of rotor is easily dismantled, it is preferred, lock nut upper end is provided with the step, be provided with the gasket on the step.

Above-mentioned centrifuge of rotor is dismantled easily, preferably, be provided with the screw thread on the mounting hole inner wall, central screw rod passes through the screw thread and is connected with the rotor.

In the centrifuge with the easily detachable rotor, preferably, the lower end of the lock nut is provided with the boss surface; the upper end of the locking nut is arranged in the through hole at the lower end of the central screw rod, and the aperture of the through hole at the lower end of the central screw rod is smaller than the outer diameter of the convex table-board on the locking nut.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the locking nut and the C-shaped clamp spring or the central screw matched with the locking nut are arranged in the mounting hole of the rotor, when the centrifuge rotor needs to be dismounted from the motor shaft, the locking nut is unscrewed by using a spanner, the position of the locking nut in the mounting hole rises until the locking nut is propped against the C-shaped clamp spring or the central screw, and then the spanner is continuously rotated to drive the rotor to move upwards, so that the centrifuge rotor is quickly dismounted.

Drawings

FIG. 1 is a cross-sectional view of a centrifuge rotor in accordance with example 1.

Fig. 2 is an enlarged schematic view of a structure in fig. 1.

Fig. 3 is a perspective view of the lock nut, the spacer and the C-shaped clamp spring in embodiment 1.

FIG. 4 is an exploded view of the entire structure of the rotor in the centrifuge of example 1.

FIG. 5 is a sectional view of a centrifuge rotor in accordance with example 2.

Fig. 6 is an enlarged view of the structure at B in fig. 5.

FIG. 7 is a perspective view of a lock nut in accordance with embodiment 2.

Description of the figures

1. A motor shaft; 2. a rotor; 21. mounting grooves; 22. mounting holes; 3. a lock nut; 31. a step; 32. a convex table surface; 4. a gasket; 5. a C-shaped clamp spring; 6. a central screw; 61. a through hole; 62. a snap ring; 7. and (7) a cover plate.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the utility model is not limited to the specific embodiments below.

It should be particularly noted that when an element is referred to as being "fixed to, connected to or communicated with" another element, it can be directly fixed to, connected to or communicated with the other element or indirectly fixed to, connected to or communicated with the other element through other intermediate connecting components.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.

Example 1

As shown in fig. 1, the centrifuge easy to disassemble the rotor in this embodiment includes a rotor 2, the rotor 2 is connected to a motor shaft 1, the rotor 2 is provided with a plurality of mounting slots 21 for placing centrifuge tubes, a mounting hole 22 is formed in the center of the upper portion of the rotor 2, and the motor shaft 1 extends into the mounting hole 22 and is fixed to the rotor 2 through a lock nut 3 in the mounting hole 22.

As shown in fig. 2 and 3, a step 31 is arranged at the upper end of the lock nut 3, a gasket 4 is arranged on the step 31, a C-shaped clamp spring 5 is arranged above the gasket 4, and the C-shaped clamp spring 5 is fixed in the mounting hole 22 through a clamping groove on the mounting hole 22. When needs are dismantled rotor 2 from motor shaft 1, use the spanner to unscrew lock nut 3, lock nut 3 rises in the position of mounting hole 22 this moment, when C type jump ring 5 is touched in gasket 4, continues rotatory spanner, because there is C type jump ring 5 to exist, rotor 2 can rise with lock nut 3 together, then dismantles together, and is very convenient fast.

As shown in fig. 4, during assembly, the motor shaft 1 is firstly extended into the mounting hole 22 of the rotor 2, then the lock nut 3 is placed at the upper end of the motor shaft 1, and is screwed down by a wrench, and finally the gasket 4 is embedded into the step 31 of the lock nut 3, the C-shaped clamp spring 5 is pressed into the clamping groove of the mounting hole 22, and the centrifuge rotor is mounted.

Example 2

As shown in fig. 5, the present embodiment provides another centrifuge which is easy to disassemble the rotor, the centrifuge rotor includes a rotor 2, the rotor 2 is connected to a motor shaft 1, a plurality of mounting slots 21 for placing centrifuge tubes are provided on the rotor 2, a mounting hole 22 is provided at the center of the upper portion of the rotor 2, the motor shaft 1 extends into the mounting hole 22, and is connected to the rotor 2 through a lock nut 3 in the mounting hole 22.

As shown in fig. 6 and 7, the central screw is provided with a through hole 61, the through hole 61 at the lower end of the central screw 6 has a larger diameter than the through hole 61 at the upper end, the upper end of the lock nut 3 is disposed in the through hole 61 at the lower end of the central screw 6, the boss face 32 is disposed at the lower end of the lock nut 3, and the through hole 61 at the lower end of the central screw 6 has a smaller diameter than the outer diameter of the boss face 32 of the lock nut 3. A screw thread is provided on the inner wall of the mounting hole 22, and the central screw 6 is fixed to the rotor 2 by the screw thread. When rotor 2 is dismantled from motor shaft 1 as required, use the allen key to pass the through-hole on the central screw rod, unscrew lock nut 3, lock nut 3 rises in the position of mounting hole 22 this moment, and lock nut 3's boss face 32 can push up central screw rod 6, continues rotatory allen key, drives rotor 2 rebound, realizes dismantling centrifuge rotor fast.

In this embodiment, the centrifuge rotor is further provided with a cover plate 7, and the mounting hole 22 is provided on the cover plate 7. In order to increase the connection firmness between the central screw and the cover plate, after the central screw 6 passes through the cover plate 7, a ring of snap rings 62 are sleeved on the central screw 6 at a position close to the bottom of the cover plate 7.

Claims

1. A centrifuge with an easily detachable rotor comprises a rotor, wherein the rotor is connected to a motor shaft; be provided with a plurality of mounting grooves that are used for placing the centrifuging tube on the rotor, its characterized in that: the center of the upper part of the rotor is provided with a mounting hole, and the motor shaft is fixed with the rotor through a locking nut arranged in the mounting hole; a C-shaped clamp spring or a central screw rod is fixedly arranged above the locking nut in the mounting hole; the aperture of the C-shaped clamp spring is smaller than the outer diameter of the lock nut; the middle of the central screw rod is provided with a through hole, and the aperture of the through hole at the lower end of the central screw rod is smaller than the outer diameter of the locking nut.

2. The centrifuge of claim 1 wherein said rotor is easily removable from said centrifuge: on the mounting hole inner wall, be provided with the draw-in groove in lock nut's top, C type jump ring sets up in the draw-in groove.

3. The centrifuge of claim 2 wherein said rotor is easily removable from said centrifuge further comprising: the upper end of the locking nut is provided with a step, and a gasket is arranged on the step.

4. The centrifuge of claim 1 wherein said rotor is easily removable from said centrifuge: and the inner wall of the mounting hole is provided with threads, and the central screw rod is connected with the rotor through the threads.

5. The centrifuge of claim 4 wherein said rotor is easily removable from said centrifuge by: the lower end of the locking nut is provided with a convex table surface; the upper end of the locking nut is arranged in the through hole at the lower end of the central screw rod, and the aperture of the through hole at the lower end of the central screw rod is smaller than the outer diameter of the convex table-board on the locking nut.