Stepping scanning torque measuring device in magnetic-levitation bearing support structure

Abstract

The invention discloses a use method of a stepping scanning torque measuring device in a magnetic-levitation bearing support structure, particularly the use method of equipment for detecting the change of blood flow. The use method comprises the steps that: samples are filled in gaps between a measuring outer cylinder and a measuring inner cylinder, a big wheel is driven to rotate by rotation of a stepping motor, a stop position of an oscillating bar is detected by a displacement detection device, the measuring outer cylinder rotates clockwise in a certain speed and drives the samples to rotate, the measuring inner cylinder is driven by a friction force generated by sample viscosity to rotate, a center shaft and the horizontal oscillating bar is driven to rotate by the measuring inner cylinder, meanwhile a balance spring is tightened under the drive of the center shaft, when an elastic counter-acting force generated by the balance spring is equal to the friction force generated by the sample viscosity, the measuring inner cylinder reaches a balance state, at this time the oscillating bar stops at a certain position, the stepping motor rotates clockwise and drives the displacement detection device to rotate clockwise, thus the sample viscosity can be calculated according to a direct ratio relation between the displacement of the horizontal oscilating bar and the step number of the stepping motor.

Description

technical field [0001] The invention belongs to measuring equipment, in particular to equipment for testing blood rheology. Background technique [0002] There are three main techniques for clinical testing of blood rheology, namely, capillary, cone-plate, suspension wire, and hairspring. As a result of similar shear rates, organic components such as protein in the blood are easily attached to the inner wall of the capillary, causing changes in the smoothness, especially the diameter of the tube, and the cleaning of the capillary is difficult, so the capillary type has rarely been used, and the cone-plate blood flow It can measure the viscosity of a blood sample at a specific shear rate. The rotation speed of the blood cutting head rotating in the sample is affected by the viscosity of the sample, and the steady-state rotation speed or It is deceleration to calculate the viscosity of the sample. The rotation of the blood cutting head is driven by the electromagnetic field. ...

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Problems solved by technology

[0003] In order to overcome the existing hanging wire type blood rheological detection equipment, which is prone to shaking during measurement, and the jewel bearing type cannot overcome the lack of friction in the bearing, the present invention provides a magnetic suspension bearing support structure step-scan torque measurement device, the magnetic suspension bearing The supporting structure step scanning torque measurement device accurately uses the magnetic suspension bearing support structure and the step scanning and hairspring to measure the torque structure, which can measure whole blood and plasma samples in the range of 1-200mpa.s -1 Viscosity values ​​at any shear rate within the range

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