An anti-warping star wheel of a single-screw compressor and its manufacturing process and installation process

A single-screw compressor and production process technology, applied in the field of power machinery, can solve the problems of difficult to achieve flatness, deformation and warpage of the star wheel, and leakage of compressed gas, and achieve the effect of reducing the reserved gap and reducing the amount of medium leakage

Active Publication Date: 2021-01-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A newly made star wheel, especially a large star wheel, is not easy to meet the flatness requirements
Moreover, through long-term operation, free deformation and warping of the star wheel often occur
This has to design the gap between the star wheel and the side wall of the window to be larger, resulting in more compressed gas leakage

Method used

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  • An anti-warping star wheel of a single-screw compressor and its manufacturing process and installation process
  • An anti-warping star wheel of a single-screw compressor and its manufacturing process and installation process
  • An anti-warping star wheel of a single-screw compressor and its manufacturing process and installation process

Examples

Experimental program
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Embodiment approach

[0031] see Figure 2 to Figure 5 As shown, a manufacturing process of an anti-warping star wheel of a single-screw compressor, including:

[0032] Make a plastic star wheel blank 111 according to the commonly used single-screw compressor star wheel manufacturing process. The thickness of the commonly used star wheel blank is generally a = 6 ~ 12mm, and the meshing tooth surface of the star wheel also leaves sufficient space Machining allowance. The star wheel blank is subjected to artificial aging treatment or natural aging treatment to make it deform freely. Then process a star wheel blank with good parallelism and flatness of both ends in a free state, and the parallelism and flatness of both ends should meet the requirements of free tolerance, such as image 3 shown.

[0033] The middle part of one end face of the star wheel blank 111 is processed into a plane by turning or milling, and the processing amount c is 1-2 mm; the processing depth of the small diameter star wh...

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Abstract

The invention discloses an anti-upwarp star wheel disc of a single-screw compressor, and a manufacturing process and installation process thereof. According to the star wheel disc obtained through themanufacturing process provided by the invention, a middle circular ring is an equal-thickness protruding plane; star wheel teeth on an outer circle are equal in thickness and are obliquely curved downwards to form an upside-down dish-type star wheel disc. The anti-upwarp star wheel disc is obtained through machining according to the material characteristics of the star wheel disc. When the star wheel disc is mounted on a star wheel bracket, the dish-type star wheel disc machined through the process is placed on the star wheel bracket, the side face with the concave middle portion is attachedto the disc surface of the star wheel bracket under a natural state, and the back surface with the arched middle portion gets away from the star wheel bracket; a pressing plate sleeves a shaft of thestar wheel bracket to press the star wheel disc towards the plane of the star wheel bracket, and the pressing plate is tensioned through a nut to make the star wheel disc deform to form a plane. The teeth of the star wheel disc are closely attached to the star wheel bracket all the time without free warping. Accordingly, deformation of the star wheel disc and the space between the star wheel discand a window of a machine case are effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of power machinery, and in particular relates to an anti-warping star wheel of a single-screw compressor and its manufacturing process and installation process. Background technique [0002] The single-screw compressor is a fluid machine with excellent performance. The gas force on its screw and star wheel is extremely small during operation, so the rotating shaft only needs water-lubricated bearings to ensure stable work, so it is very easy to manufacture. An oil-free compressor cooled by water spray lubrication. The single-screw compressor consists of a screw rotor and two star wheels, and the star wheel is composed of a star wheel frame and a star wheel plate, such as figure 1 shown. The star wheel 1 is usually made of wear-resistant non-metallic material, and its thickness is generally 6-12 mm, which has the disadvantage of being easily warped and deformed. The star wheel seat is on the star wheel bra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00F04C29/00
CPCB23P15/00F04C29/00F04C2240/20
Inventor 赵忖王衡张文珊
Owner XI AN JIAOTONG UNIV
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