Automatic cleaning coating angle valve

Abstract

The invention relates to an angle valve, particularly relates to an automatic cleaning and coating angle valve for PVC (polyvinyl chloride) devices, and belongs to the field of fluid control valves. The automatic cleaning and coating angle valve comprises a valve body. A valve stem is arranged in the valve body, a valve spool is welded at the lower end of the valve stem, a sleeve is arranged between the valve stem and the valve body, a guide sleeve is arranged between the upper portion of the valve spool and the valve body, and a guide ring is arranged between the sleeve and the guide sleeve. A compression ring and a lower sealing ring are arranged between the lower portion of the valve spool and the valve body, the lower sealing ring is positioned at the upper end of the compression ring, flexible sealing effects can be realized by the lower sealing ring and the valve body, and rigid sealing effects can be realized by a valve spool sealing surface of the valve spool and a valve body sealing surface of the valve body, so that flexible and rigid double-effect sealing structures can be formed between the valve body and the valve spool. The automatic cleaning and coating angle valve has the advantages that the valve body and the valve spool are of the flexible and rigid double-effect sealing structures, accordingly, VI-level requirements can be met by the sealing level of the automatic cleaning and coating angle valve, and the automatic cleaning and coating angle valve is excellent in sealing performance; the valve spool and the valve stem are of up-down double-guide structures, accordingly, the coaxiality can be guaranteed, and the valve is good in dynamic performance.

Description

technical field [0001] The invention relates to an angle valve, in particular to an automatic cleaning and coating angle valve for PVC devices, which belongs to the field of fluid control valves. Background technique [0002] The polymerization kettle is the most critical process equipment in the production process of PVC polymerization, but due to physical factors or chemical factors after the polymerization reaction, there are different degrees of residual materials on the stirring shaft, blade, back side of the baffle and the inner wall of the head of the polymerization kettle. sticking phenomenon. Sticking to the kettle will lead to a great reduction in the thermal conductivity of the polymerization kettle, prolonging the polymerization reaction time and reducing production efficiency. In addition, residual materials may cause secondary polymerization of particles, which will be mixed into PVC products, which will affect the appearance quality of finished products and l...

AI Technical Summary

Problems solved by technology

Traditional cleaning and coating equipment has many disadvantages such as poor sealing, poor cleaning effect, uneven coating, unreliable action, short service life, etc., which cannot meet the process requirements

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