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Ball-dragging-type viscometer

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

Inactive Publication Date: 2014-08-27
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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Embodiment Construction

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

[0046] A drag-ball type viscometer includes a housing 19 in which a spiral transmission mechanism, a speed control system and a tension detection system are arranged, such as figure 1 , figure 2 As shown, the structure of the speed control system is: including a controller 25, a servo motor 27, a motor driver 26, and a rotary encoder 28. The servo motor 27 is connected to the controller 25 through the motor driver 26, and the rotary encoder 28 is connected to the Controller 25 is connected;

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

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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 type 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., require viscosity measurement. . There are many methods for measuring liquid viscosity (viscosity coefficient). According to the viscosity, there are corresponding measurement methods, such as falling ball method, capillary method and tumbler method. Among them, the falling ball method is the most basic one. It is easy to implement, but this method is only suitable for measuring transparent or semi-transparent liquids with a large viscosity coefficient, and the measurement accuracy is relatively low, and it is not conducive to automatic measurement. Summary of the invention [0003] In vie...

Claims

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Application Information

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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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