Viscosity detection sensor based on double piezoelectric coupling

Abstract

The invention discloses a viscosity detection sensor based on double piezoelectric coupling and belongs to the technical field of viscosity detection. The viscosity detection sensor is characterized in that a piezoelectric quartz crystal is fastened in a clamping position in a supporting seat; a mechanical vibration conducting column is cemented between an output unit and a feedback unit; the output unit and the feedback unit are arranged in an insulation clamping position on the supporting seat on which the piezoelectric quartz crystal is fastened; fixing holes for a screw to penetrate through are formed in a mounting supporting and positioning gland and a mounting supporting and positioning base; the mounting supporting and positioning base is provided with a clamping position for mounting an elastic member; the elastic member is pressed into the mounting supporting and positioning base by the mounting supporting and positioning gland; the mounting supporting and positioning gland is fastened with the mounting supporting and positioning base. The viscosity detection sensor has the beneficial effects that a piezoelectric quartz crystal fastener is reasonably distributed, so that directional flowing of air is facilitated and the influence of air current on inspection is reduced; in addition, the piezoelectric quartz crystal fastener has insulating and electromagnetic shielding functions, and the influence of objective factors on a test result is eliminated. According to the viscosity detection sensor disclosed by the invention, a circular elastic member is designed, so that the aseismic function of the system is enhanced, mechanical vibration is reduced to the maximum extent, and the influence of outside on the test result is reduced.

Description

technical field [0001] The invention belongs to the technical field of viscosity detection, and specifically relates to the improvement of biological, chemical, medical and environmental detection equipment. Background technique [0002] In recent years, viscosity measurement has been widely used in the fields of petroleum, paint, food, biochemistry, medicine, materials and chemical industry. It plays an important role in the quality control of the production process and the performance evaluation of the final product. Improving the accuracy of viscosity measurement can Create higher economic value and social value. [0003] Traditional viscosity measurement methods have been developed relatively mature, mainly including falling ball method, rotation method, capillary method and so on. The falling ball method is mainly to measure the viscosity by measuring the time taken by the falling body to pass through two fixed points, but due to the manual stop watch timing and the in...

AI Technical Summary

Problems solved by technology

The falling ball method is mainly to measure the viscosity by measuring the time taken by the falling body to pass through two fixed points, but due to the manual stop watch timing and the influence of human visual persistence effect, it will bring timing errors to the experimental results; the rotation method is mainly by measuring the fluid The viscous moment acting on the object or the rotational speed of the object is used to determine the viscosity of the liquid, but the pointer reading method is used, which limits the stability and reading accuracy to a certain extent; although the capillary method is a very practical viscosity measurement method, it is Due to its structural limitation, it is easy to be blocked by small particles, and it is very troublesome to clean and dry

The above methods measure the viscosity of the tested sample from different angles, but most of them cannot give accurate measurement data, and some methods have very strict requirements on environmental conditions, and there is still a long way to go before field application

Images