Capillary viscometer capable of realizing automatic quantification and testing method thereof

Abstract

The invention relates to a capillary viscometer capable of realizing automatic quantification and a testing method thereof. The capillary viscometer comprises a tube-bending type kinematic viscometer; the tube-bending type kinematic viscometer comprises a sample introduction cup, a honeycomb duct, a transverse arm, a capillary tube and a measuring bulb sphere which are successively communicated, and an upper scale mark and a lower scale mark respectively located above and below the measuring bulb sphere; the capillary viscometer further comprises a branch pipe; and one end of the branch pipe is communicated with the transverse arm, and the internal diameter of the branch pipe is smaller than the internal diameter of the transverse arm and greater than internal diameter of the capillary tube. According to the invention, since the branch pipe is arranged on the transverse arm of the viscometer, a sample located between the sample introduction cup and the branch pipe has enough time to thoroughly flow out from the branch pipe before a sample in the capillary tube reaches the upper scale mark, so it is guaranteed that the tail end of the sample is located at the edge of the joint of the branch pipe and the transverse arm, the viscometer is calibrated and the height of a liquid column in testing of a sample each time is identical to the length of the capillary tube; and thus, accuracy and repeatability of viscosity testing are improved.

Description

technical field [0001] The invention relates to a capillary viscometer capable of automatic quantification and a testing method thereof, belonging to the field of Newtonian liquid viscosity analysis. Background technique [0002] There are many measurement methods for the kinematic viscosity of fluid Newtonian liquids. The current domestic measurement methods include capillary measurement, rotation measurement, falling ball method, vibration method, plate method, and viscosity cup method. Among them, the gravity glass capillary measurement method in the capillary measurement tube method is the method with the highest accuracy among the existing measurement methods, and it is also the most commonly used method. [0003] The method of measuring the kinematic viscosity of a Newtonian liquid with a glass capillary is to measure the time for a certain volume of liquid to flow through a calibrated glass capillary viscometer under gravity at a constant temperature, the product of t...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a gravity-type glass capillary viscometer for automatic viscometers that can solve the problems of traditional viscosity measuring instruments such as sample color limitation, poor measurement timeliness, difficult cleaning, low degree of automation, and waste of resources. It realizes the function of automatic quantification, the measurement speed is fast, the cleaning is convenient and the cleaning solution is saved, and it is not limited by the color of the sample at all

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