Valve sleeve contact surface gas-solid mixed fluid grinding and polishing device and method

Abstract

The invention discloses a valve sleeve contact face gas-solid mixing type fluid grinding and polishing device and method. A frequently-used valve sleeve deburring method is not ideal in actual effect. High-pressure compressed air output by an air compressor of the device sequentially leads to a variable containing cavity, a mixing containing cavity, a grinding containing cavity and a filtering containing cavity. An eccentric wheel device arranged in the variable containing cavity is used for driving a piston. Micro-nano grinding particles and a stirring wheel are arranged in the mixing containing cavity. A filtering device is arranged in the middle of the grinding containing cavity. The grinding and polishing method comprises the steps that the air compressor is started, and the high-pressure compressed air passes through the variable containing cavity and then is conveyed to the mixing containing cavity; the micro-nano grinding particles are suspended in the mixing containing cavity through the stirring wheel and are evenly mixed with the high-pressure compressed air to form gas-solid two-phase grinding particle fluid, and the gas-solid two-phase grinding particle fluid is output to the grinding containing cavity to impact on a valve sleeve to be grinded at high speed; and after flowing out of the grinding containing cavity, the gas-solid two-phase grinding particle fluid is filtered through the filtering containing cavity and separation of the micro-nano grinding particles and the high-pressure compressed air is achieved. The device and method are suitable for micro-bur removal of various complex contact faces.

Description

Technical field [0001] The invention belongs to the technical field of finishing, and specifically relates to a gas-solid mixing fluid grinding and polishing device and method for the contact surface of a valve sleeve. Background technique [0002] The seal wear rate is the biggest factor affecting the life and reliability of the pneumatic valve. The presence of burrs on the inner wall of the valve sleeve will aggravate the wear of the seal. However, in the processing of valve sleeves with through holes, small burrs will inevitably appear, so deburring becomes an indispensable process in the processing of valve sleeves. Commonly used traditional deburring methods include scraper deburring and brush finishing methods, but this type of method is only suitable for occasions where the structure of the workpiece is relatively simple and the position to be processed is small. When the length of the workpiece is relatively large, or the position to be processed is relatively large. Not...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the deficiencies such as poor versatility, incomplete removal of burrs, large difference in surface roughness, etc. in existing technologies for removing microburrs on the contact surface of various types of valve sleeves and valve cores, and provides a gas-solid mixed fluid on the contact surface of valve sleeves. Grinding and polishing device and method

Images