A fully-automatic continuous kinematic viscosity measuring device

Abstract

The invention relates to a fully-automatic continuous kinematic viscosity measuring device. A rotary motor is controlled by an MCU to drive a set testing oil cup to rotate to a fixed position and to rise to a pointed height. Through cooperation of a plurality of solenoid valves, an oil sample is sucked up by a vacuum pump to a viscometer. During analysis, NTC sensors are adopted to detect whetherthe oil sample flows through bulbs or not so as to calculate a test result. After a test is finished, the residual oil sample is sucked into a waste liquid bottle through the vacuum pump, then a balance tube and a capillary tube of the viscometer are cleaned under cooperation of the vacuum pump and an air compressor, the current testing oil cup is blow-dried by the air compressor after the cleaning liquid is sucked to the waste liquid bottle, the system completes all actions, and analysis testing for a next testing oil cup is started. Dark opaque oil samples can be measured, the viscosity measuring range is broadened, and oil sample preheating time is shortened to one third of conventional oil sample preheating time. The device can continuously measure a plurality of oil samples, and integrates automatic constant temperature, sample sucking, cleaning, draining and blow-drying, thus greatly saving sample preparation time, and saving testing test oil samples and the cleaning liquid.

Description

technical field [0001] The invention relates to an analysis instrument, in particular to a fully automatic continuous operation kinematic viscosity measuring device. Background technique [0002] Many petroleum products and some non-petroleum product substances are used as lubricants, and the proper operation of equipment is often dependent on the proper viscosity of the liquid being used. In addition, the viscosity of many petroleum fuels is very important to optimize storage, handling and operating conditions. [0003] At present, the degree of automation of automatic kinematic viscosity instruments in China is not very high. Many instruments require manual sample injection and then a series of tests. It is difficult to reflect the value, what they need is continuous operation, and the whole test process does not require manual intervention. Conventional instruments require many oil samples for a single test, resulting in long warm-up time and more time and heat energy; ...

AI Technical Summary

Problems solved by technology

Conventional instruments require many oil samples for a single test, resulting in long warm-up time and more time and heat energy; for oil sample liquid level detection, optical detection is used, which is not conducive to the determination of dark opaque oil samples; viscosity In terms of meter bulb treatment, only one bulb can be analyzed, so the measurement range of the viscosity value is greatly shortened, and viscometers with different capillary inner diameters need to be replaced frequently

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