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Flexible meshing pair of single screw compressor

A single-screw compressor and meshing pair technology, applied in mechanical equipment, machines/engines, rotary piston machines, etc., can solve the problems of indexing error, short life, poor machining accuracy, etc., and achieve high efficiency.

Active Publication Date: 2011-10-12
天津快透平科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Among the four existing meshing pairs mentioned above, the busbars of the first meshing pair participating in the meshing are always a straight line, and the wear parts are fixed, resulting in large wear, short life, and leakage will gradually increase with time
Although the meshing contact line of the second type of meshing pair is constantly changing and the wear is small, the leakage hole is large and the volumetric efficiency is low. In addition, there is a certain indexing error during processing, and the processing accuracy is poor.
The working surface of the tooth side of the star wheel in this meshing pair needs to be processed with the same screw hob as the screw tooth surface, but the production and batch production of the hob are difficult

Method used

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  • Flexible meshing pair of single screw compressor
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Embodiment Construction

[0024] figure 1 It is the situation when the working tooth surface of the conventional star wheel meshes with the curved surface of the screw groove. Among them, 1 is the star wheel, 2 is the working tooth surface of the star wheel, and 3 is the working surface of the screw groove. The meshing gap between the star wheel working surface 2 and the screw groove working surface 3 is determined by the machining accuracy. When the processing accuracy is not enough, or the star wheel or the screw groove of the compressor is worn after working for a period of time, there will be a fixed meshing gap between the star wheel working surface 2 and the screw groove working surface 3, and this gap cannot be eliminated. of (see figure 2 ).

[0025] image 3 and Figure 4 It shows the structural form of the flexible meshing pair proposed by the present invention, and its main feature is that there is a flange 5 with gradually changing thickness on each working tooth surface of the star w...

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Abstract

The invention provides a flexible meshing pair of a single screw compressor, which consists of a screw spiral groove tooth surface and a working tooth surface of a star wheel, wherein the working tooth surface of the star wheel is a flexible working tooth surface that can move slightly in the normal line direction. The flexible meshing pair of the single screw compressor can automatically make upthe gap between the screw spiral groove surface and the working tooth surface of the star wheel due to insufficient machining accuracy, and can also automatically make up the increased meshing gap caused by the abrasion of the working tooth surface of the star wheel, therefore, the working tooth surface of the star wheel and the screw spiral groove curved surface are ensured to be meshed completely, thus guaranteeing that the compressor always has the highest efficiency.

Description

technical field [0001] The invention relates to an engagement pair of a single-screw compressor, in particular to a flexible engagement pair of a single-screw compressor. Background technique [0002] The single-screw compressor is a relatively new type of rotary compression machinery, and its structure is very simple, with only one screw and several star wheels. Single-screw compressors have a series of advantages such as small size, large capacity, high pressure ratio, low noise, small vibration, and small discharge pulsation. They can meet the requirements of various industries and can be used as an upgrade product for other types of compressors. Like other types of compressors, single screw compressors can also function as expanders when reversed. [0003] The efficiency of a single screw compressor is controlled by the meshing gap and friction between the screw groove and the star wheel, and the meshing gap is controlled by the meshing profile and machining accuracy. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/00
Inventor 王晓宇国相杰刘建军
Owner 天津快透平科技发展有限公司
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