Centrifugal machine rotor positioning device and feeding method

Abstract

The invention belongs to the technical field of centrifugal machines, and particularly relates to a centrifugal machine rotor positioning device and a feeding method.The centrifugal machine rotor positioning device comprises a mounting bottom plate and a centrifugal rotating disc mechanism rotationally mounted on the mounting bottom plate; comprising a coarse positioning mechanism which comprises a driving friction wheel assembly, a driven friction wheel and a connecting rod mechanism; the driving friction wheel assembly comprises a driving friction wheel and a driving device for driving the driving friction wheel to rotate; the driven friction wheel is connected with the centrifugal turntable mechanism and drives the centrifugal turntable mechanism to rotate; the connecting rod mechanism is connected with the driving friction wheel assembly and drives the driving friction wheel assembly to move to make contact with or be away from the driven friction wheel. The coarse positioning sensing device senses that the centrifugal turntable mechanism is driven by the coarse positioning mechanism to a coarse positioning in-position; the accurate positioning mechanism comprises a rotor positioning disc, a positioning wedge block and a pushing device; the rotor positioning disc is connected with the centrifugal rotating disc mechanism and rotates along with the centrifugal rotating disc mechanism, and the outer edge of the rotor positioning disc is provided with rotor positioning features clamped with the positioning wedge blocks. The pushing device is connected with the positioning wedge block and drives the positioning wedge block to move to be clamped with or separated from the rotor positioning feature.

Description

technical field [0001] The invention belongs to the technical field of centrifuges, and in particular relates to a centrifuge rotor positioning device and a feeding method. Background technique [0002] The centrifuge is a device that uses the powerful centrifugal force generated by the high-speed rotation of the rotor to separate the components in the mixture of liquid and solid particles or liquid and liquid particles. It is widely used in life sciences, medicine, chemistry, environmental protection and other fields. [0003] Most of the centrifuges in the existing medical industry do not have centrifuge rotor positioning function, and a few centrifuges with positioning function can achieve positioning in two ways. The centrifuge rotor is connected, and the second is to use the positioning motor to drive the centrifuge rotor to position. Specifically, such as a one-way bearing, an electromagnetic clutch or a clutch device driven by an actuator to contact and disengage from...

AI Technical Summary

Problems solved by technology

[0004] (1) After the centrifuge stops working, the rotor continues to rotate due to its own inertia, which causes the final stop position of the centrifuge to be random after centrifugation, which requires manual operation and is not conducive to automation integration;

[0005] (2) The centrifugal motor is also used as a positioning motor. Under the requirements of high speed and reasonable inertia configuration, the motor is large in size and high in cost;

[0006] (3) The angle positioning motor provides the rotating power. When the centrifuge is working, the internal rolling body of the one-way bearing rotates with the centrifuge rotor at high speed, which increases the noise of the equipment, causes wear and tear of the device, and reduces the stability of the equipment; the clutch device and the centrifuge are realized by using an electromagnetic clutch. The contact and disengagement of the rotor of the machine, the use of the electromagnetic clutch device will increase the overall volume of the device, increase the complexity of the system, and reduce the stability of the equipment

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