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A drag ball viscometer

A viscometer and drag-ball technology, applied in the field of drag-ball viscometers, can solve the problems of unfavorable automatic measurement and low measurement accuracy, and achieve the effect of widening the measurement range, high measurement sensitivity and precision, and high sensitivity and precision.

Inactive Publication Date: 2016-03-09
SHANDONG UNIV
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AI Technical Summary

Problems solved by technology

There are many methods for measuring liquid viscosity (viscosity coefficient). According to the size of the viscosity, there are corresponding measurement methods, such as falling ball method, capillary method and drum method, etc. Among them, the falling ball method is the most basic one, which is simple and convenient. Easy to implement, but this method is only suitable for measuring liquids with large viscosity coefficient, transparent or translucent, the measurement accuracy is relatively low, and it is not conducive to automatic measurement

Method used

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  • A drag ball viscometer
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  • A drag ball viscometer

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings.

[0046] A kind of tow ball type viscometer, comprises housing 19, is provided with screw transmission mechanism, speed control system and tension detection system in housing 19, such as figure 1 , figure 2 Shown, wherein, the structure of speed control system is: comprise controller 25, servomotor 27, motor driver 26, rotary encoder 28, wherein, servomotor 27 is connected with controller 25 through motor driver 26, rotary encoder 28 and The controller 25 is connected;

[0047]The structure of the screw transmission mechanism is: including the transmission assembly 9 (composed of a servo motor 27, a rotary encoder 28, and a transmission 20), a coupling 8, a screw 7, a nut block component 5, a guide rod 16, and a Hall limit switch 4, such as image 3 As shown, among them, the transmission assembly 9, the coupling 8, and the screw rod 7 are connected in sequence, the ...

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Abstract

The invention discloses a ball-dragging-type viscometer. The ball-dragging-type viscometer is suitable for liquid with small viscosity coefficients as well as non-transparent liquid and high in measurement accuracy. According to the structure, the ball-dragging-type viscometer comprises a shell, a screw drive mechanism, a speed control system and a tension detection system are arranged in the shell, and the speed control system structurally comprises a controller, a servo motor, a motor driver and a rotary encoder, wherein the servo motor is connected with the controller through the motor driver and the rotary encoder is connected with the controller. According to the ball-dragging-type viscometer, a traditional ball falling method is replaced by a ball dragging method, namely, a ball is dragged at constant and low speed through the screw drive mechanism, so that the ball moves upwards at given speed and the viscosity of liquid is calculated according the Stokes formula shown in the specification according to measurement of tension borne by the ball. The ball-dragging-type viscometer has the advantages of being convenient to use, capable of immediately conducting repeated measurement, simple in structure, capable of easily achieving automatic measurement and the like.

Description

technical field [0001] The invention relates to a drag ball viscometer. Background technique [0002] Viscosity measurement plays an important role in many industrial sectors and scientific research fields. It is widely used in petroleum, chemical, medical and other industries. For example, the design of oil pipelines, the quality inspection of various petroleum products and paints, etc., all require viscosity measurement. . There are many methods for measuring liquid viscosity (viscosity coefficient). According to the size of the viscosity, there are corresponding measurement methods, such as falling ball method, capillary method and drum method, etc. Among them, the falling ball method is the most basic one, which is simple and convenient. It is easy to operate, but this method is only suitable for measuring liquids with large viscosity coefficient, transparent or translucent, and the measurement accuracy is relatively low, which is not conducive to automatic measurement....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/12
Inventor 孙晓明吴明海徐建强万桂怡
Owner SHANDONG UNIV
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