Viscometer

A viscometer, hollow technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of unfavorable bearings, damage, liquid infiltration, etc.

Active Publication Date: 2019-09-24
安东帕有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the disadvantage of lateral forces, which in the case of microsystems are very detrimental to the bearings, any leaks at the rotating seals of the hollow cylinders could allow problematic sample liquids to seep into areas where they could pose a threat or cause damage
The disadvantage of such a device is that additional seals and / or bearings are required

Method used

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Examples

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Embodiment Construction

[0027] Such as figure 1 Schematically shown, the viscometer according to the invention comprises a base 5 in which an advantageously cylindrical receiving space or hollow space 25 is formed, which contains the hollow cylinder 1 therein. As already mentioned, the hollow cylinder 1 does not have to have a cylindrical shape; the outer surface or generatrix can also be inclined, so that other geometries can be used, especially those that are rotationally symmetrical to the longitudinal axis of the hollow cylinder 1 geometry.

[0028] The hollow cylinder 1 is supported in fluid-tight bearings 7 in the region of its ends. For this purpose, a socket 45 is attached or integrally formed at the end region or end surface of the hollow cylinder 1 and is used to support the hollow cylinder 1 in the bearing 7 . These sockets 45 allow the measurement fluid to pass through the hollow cylinder 1 , for example in the direction of the arrow 42 .

[0029] Advantageously, a rotationally symmetr...

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Abstract

The invention relates to a viscometer having a hollow cylinder (1) supported in a base (5), which is rotatable about its longitudinal axis, through which a fluid to be tested can flow, in particular a cylindrical measuring part (8) is rotatably supported in the base (5). According to the present invention, a hollow cylinder (1) is provided. The hollow cylinder (1) is provided with an electromagnetic drive with a stator (2) and a rotor (14). The hollow cylinder (1) can be mounted on a base ( 5), wherein the driven stator (2) is supported on the base (5) and the driven rotor (14) is supported on the hollow cylinder (1), and is driven by the stator to rotate around the hollow cylinder (1) ) An annular rotor (3) rotating on its longitudinal axis is supported between the stator (2) and the rotor (14) for electromagnetic coupling of said stator (2) to the rotor (14), such that the base (5) and the hollow The cylinder (1) is mechanically decoupled with respect to the electromagnetic drive and can transmit a predetermined torque to said hollow cylinder (1) by means of the electromagnetic drive, and at the same time make the axial and radial action on the hollow cylinder (1) ) with as little force as possible.

Description

technical field [0001] The present invention relates to viscometers. Background technique [0002] There are measuring systems for measuring properties of fluids, especially viscosity, the central part of which is a hollow cylinder filled with the liquid to be measured and rotated about its longitudinal axis, and wherein the measuring part is rotatably supported, wherein the test fluid medium Co-rotate with the rotation of the external measuring part or the hollow cylinder. This structure basically corresponds to a viscometer according to Couette's principle, in which the viscosity of the fluid between concentric measuring parts (preferably cylinders) is determined by an outer hollow cylinder rotating at a constant speed and an inner measuring part co-rotating The self-regulating balance between is determined. [0003] Reference is always made next to a hollow cylinder, although the shape of the inner surface of such an outer measuring part is not necessarily cylindrical. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/14
CPCG01N11/14G01N2011/145G01N2291/02818H02K49/10G01N2011/147
Inventor W.贝利施B.利奥波德
Owner 安东帕有限责任公司
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