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Shaft seals for sealing pulverulent solids

A powdery, fluid technology, applied to the sealing of the engine, the bearing of the rotating motion, the bearing, etc., can solve the problem that the sealing is not very satisfactory

Inactive Publication Date: 2002-09-11
克里斯托弗·弗雷德里克·贝恩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many occasions in industry where such seals are required, and it is well known that conventional seals for such occasions are not very satisfactory.

Method used

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  • Shaft seals for sealing pulverulent solids
  • Shaft seals for sealing pulverulent solids
  • Shaft seals for sealing pulverulent solids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In order to avoid repetition, the word "in this example" or words with the same effect used in this specification is to describe the content to be explained with the illustrated example, and it does not mean that the scope of the present invention is limited thereto, unless such limitation Where the text appears, on the other hand, where no language of the same type appears, the scope of the invention is not to be limited by anything described unless such a limitation appears in the text.

[0033] First refer to Figures 1 to 3, the figure shows that the shaft 10 is installed in the ball bearing assembly 12, and the ball bearing assembly 12 is installed in the bearing seat 14. Ball bearing assembly 12 and bearing housing 14 may be a commercial "off the shelf" unit and need not be described in detail. Bearing housing 14 is secured to plate 18 with four machine bolts or studs 16 and held in place with nuts and washers.

[0034] In this example, the plate 18 is placed ve...

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PUM

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Abstract

In a dusty environment, a non-contact seal between a low speed (5-1500 rpm) rotating shaft (302) and a wall (304) is obtained by allowing powder material to accumulate on the surface of the seal (300). The labyrinth annular sealed channel (L, shown with an exaggerated gap) between the shaft (302) and the wall (304) has a minimum initial gap of not less than 0.4 mm, but the inclusion powder entering the channel (L) is deposited in layers in the channel Inside, the cross-section of the channel (L) and the fluid flow through the channel are reduced. The L-section adjusting ring can be inserted into the channel (L) in the unit to maintain proper clearance. They degrade quickly but contribute to the accumulation of powder layers during seal operation.

Description

technical field [0001] Mechanical devices that are widely used in industry contain a rotating member (such as a shaft) that passes through or is mounted or supported in or adjacent to a hole in some fixed part of the mechanical device (such as a wall or bearing housing). Background technique [0002] The present invention particularly relates to, but is not limited to, the installation of mechanical devices operating in environments with fine solid particles that may be transported within fluids such as air (or other gases) or water (or other liquids). Such equipment includes screw conveyors, bucket elevators, so-called Z-mixers, rotary valves, augers, pulverizers, hammer mills, powder transport equipment and other mixing equipment. The above is not a list of all suitable equipment for which the present invention is applicable. In principle, the present invention can be used for any equipment that requires that gas or liquid containing solid particles cannot enter bearings o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/00F16J15/447
CPCF16J15/002F16J15/3472F16J15/4472F16J15/4474F16C33/80F16C35/045F16C23/084F16C19/06
Inventor 克里斯托弗·弗雷德里克·贝恩
Owner 克里斯托弗·弗雷德里克·贝恩