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Rheometer with gas bearing

A gas bearing, rheometer technology, applied in air cushion bearings, bearings, shafts and bearings, etc., can solve problems such as unusable rotors, surface defects, rotor geometric deviations, etc.

Active Publication Date: 2021-08-17
THERMO ELECTRON KARLSRUHE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This additional coating process increases manufacturing costs and there is a danger that in the case of poor coating, geometrical deviations or surface defects can occur on the rotor, rendering the rotor unusable

Method used

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  • Rheometer with gas bearing
  • Rheometer with gas bearing
  • Rheometer with gas bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] figure 1 It is a schematic vertical cross-sectional view of the gas bearing 10 of the generally vertical shaft 11 of the rheometer. Such as figure 1 As shown by the double arrow A in , the shaft is driven by rotation. A first bearing body (rotor) 12 is provided on the shaft body. The rotor is fixedly connected to the shaft body 11 and has two spherical main parts 21, 22 each in the form of a spherical layer, wherein the main parts 21, 22 are so along the shaft body. 11 are arranged axially such that these body parts abut each other with their smaller flat surfaces.

[0043] The shaft body 11 is designed as a hollow shaft and has an axial channel 15 extending in the longitudinal direction of the shaft body 11 , which communicates with the substantially radially opposite shaft body 11 via a radial hole 17 formed in the wall of the shaft body 11 . The extended connecting channel 16 connects. The connecting channel 16 extends linearly in the region of the contact surfac...

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PUM

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Abstract

A rheometer has a shaft rotatably supported in gas bearings. The gas bearing has a first bearing body (rotor) mounted on the shaft body and a second bearing body (stator), and the second bearing body surrounds the first bearing body at intervals to form a bearing gap. (rotor). The second bearing body (stator) is made at least in sections of a gas-permeable material and is passed through by gas in such a way that an air cushion is formed in the bearing gap, the first bearing body (rotor) and the shaft The body is non-contact supported by the air cushion. According to the invention, the first bearing body (rotor) is likewise made of a gas-permeable material at least in its area facing the second bearing body (stator), the gas permeates through the material and due to the movement of the gas Pressure or reverse flow forms its air layer close to the surface, preferably a static air layer.

Description

technical field [0001] The invention relates to a rheometer having a shaft rotatably supported in a gas bearing, wherein the gas bearing has a first bearing body (rotor) mounted on the shaft and a second bearing body (rotor) A bearing body (stator), the second bearing body surrounds the first bearing body (rotor) at intervals in such a manner as to form a bearing gap, wherein the second bearing body (stator) is at least sectionally formed of a gas-permeable material and Gas flows in such a way that an air cushion is formed in the bearing gap, and the first bearing body (rotor) and the shaft body are supported by the air cushion in a non-contact manner. Background technique [0002] Corresponding gas bearings, also known as aerostatic bearings or air bearings, are usually used in rheometers because they enable reliable microstructural analysis at extremely low torques and deformations. [0003] Aerostatic bearings belong to the category of gas or air lubricated bearings. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/14G01N11/16
CPCF16C32/0618F16C32/0625F16C33/16F16C2206/40F16C2370/00G01N11/14G01N11/165F16C32/0614F16C32/0685F16C33/1005H02K5/1677
Inventor W·普拉泽克U·鲍尔
Owner THERMO ELECTRON KARLSRUHE