Scraper type two-way high-temperature metal hard-sealed ball valve

A scraper-type, hard-sealing technology, used in valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as non-floating, inability to flexibly open and close the ball valve, and swelling of the ball and valve seat, so as to avoid swelling and death. phenomenon, the valve opening and closing is flexible and reliable, and the valve seat floats freely.
CN1776269AActive Publication Date: 2006-05-24上海纽京工业设备有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
上海纽京工业设备有限公司
Publication Date
2006-05-24

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Abstract

This invention relates to a scraper type bidirectional high temperature metal hard seal ball valve, which contains valve body, valve base, valve rod, seal piece and installation piece, wherein the valve body has left and right valve body respectively having valve base, one is float valve base, the scraper is made in left and right valve body and connected with ball, the seal device is set between valve body and float valve base to prevent effectively the impurity n valve cavity entering the spring cavity between float valve base and valve body for avoiding the impurity expansion locking the float valve base and ball expansion locking at high temperature work state. Said invention has convenient and reliable open and close, adaptation for the valve switch in coal and oil refining engineering pipeline.
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Description

technical field

[0001] The invention relates to a metal hard seal ball valve, in particular to a metal hard seal ball valve with a scraper device. The invention is suitable for the valve switch of the pipeline of the coal refinery engineering device. Background technique

[0002] The scraper type two-way high-temperature metal hard-sealed ball valve is generally used in the working condition of high-temperature medium with particles. Its structure is mainly composed of valve body, valve seat, ball, valve stem, seal and mounting parts. The valve body is the left valve body and the right valve body. Connected by mounting parts, the left valve body and the right valve body are respectively provided with valve seats, one of which is fixedly installed between the valve body and the other valve seat is floatingly installed between the valve body to absorb high temperature expansion and prevent After high temperature expansion, the ball swells to death between the valve seats. At...

Claims

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