Rotary type capillary viscometer

Abstract

The invention discloses a rotary type capillary viscometer, comprising an upper liquid receiver, a timing ball, a first capillary, a suspension horizontal ball, a lower liquid receiver, and a rise liquid tube, wherein, the upper liquid receiver, the timing ball, the first capillary, the suspension horizontal ball, the lower liquid receiver, and the rise liquid tube are connected orderly, the suspension horizontal ball is connected with an liquid injection pipe, a bypass pipe connected with the liquid injection pipe is arranged between the timing ball and the upper liquid receiver, the volume of the upper liquid receiver is larger than that of the timing ball, the capillary viscometer is arranged in a bearing container, the bearing container is provided with a rotary unit of the rotary bearing container, the rotary unit comprises a carriage and a base, the carriage is provided with an upper gear and a lower gear, the upper gear is in a linkage with the lower gear, and the lower gear isin a linkage with the bearing container. According to the invention, the capillary viscometer is embedded in the bearing container, the liquid rising through rotation method is combined with bearing through the bearing container, thus the cycle measurement of the viscosity of a volatile mixture (or pure) solution system, unstable liquid or liquid of which steam has toxicity in the air can be realized, and high pressure can be born.

Description

technical field [0001] The invention relates to a liquid testing instrument, in particular to a rotary capillary viscometer. Background technique [0002] A viscometer is an instrument used to measure the viscosity of fluids (liquids and gases). It is mainly used in the research of physical chemistry and polymer physics, and can also be used to detect the fluidity of liquid products in enterprises. Viscometers can be roughly divided into three categories: capillary viscometers, rotational viscometers and falling ball viscometers. The first type is the most commonly used, such as Ostwald viscometer, Ubbelohde viscometer, Saybolt viscometer, Engler viscometer, Redwood viscometer, etc. Currently commonly used capillary viscometers (such as Austenitic, Ubbelohde, etc.) due to their open design, the liquid and its vapor in the viscometer are in direct contact with the outside air. Liquids in which oxygen and carbon dioxide react in air and liquids in which the vapor is non-tox...

AI Technical Summary

Problems solved by technology

Some researchers have proposed a capillary viscometer, which includes a high-pressure airtight container and a capillary viscometer. The viscometer uses a bypass tube to raise the liquid, but due to the method of pumping and exhausting gas, it can only measure volatile pure solution systems cyclically. , the volatile mixture solution system cannot be measured (because the way of pumping and exhausting the liquid will change the composition of the mixture); in addition, it must be noted that the liquid level of the liquid to be tested cannot be higher than the outlet of the capillary when filling the liquid to be tested Otherwise, the length L of the capillary will not be equal to the height H of the liquid column in the capillary. Therefore, in actual measurement, it is generally necessary to pre-calculate the filling volume of the liquid to be measured.

For the measurement of the viscosity of the volatile mixture solution system, they also proposed a metal capillary viscometer. Its main feature is to rotate the liquid through the bypass pipe, thereby avoiding the influence of gas release on the composition of the mixture, and can achieve volatilization. Viscosity measurement of sexual mixture or pure solution system, but affected by various factors, the pressure bearing capacity is not ideal

[0004] The above five viscometers are suitable for different occasions and have achieved good results, but these viscometers have or cannot measure the viscosity of the volatile mixed solution system, or the pressure is not ideal, or the measurement accuracy is not high, or cannot Insufficient cycle measurement etc.

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