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

A hard-sealed, scraper-type technology, applied in the direction of valve devices, cocks including cut-off devices, engine components, etc., can solve the problems of ball valves that cannot be opened and closed flexibly, balls and valve seats swell, and cannot float, etc., to achieve valve opening and closing Flexible and reliable, the valve seat floats freely, and the effect of avoiding swelling

Active Publication Date: 2008-02-27
SHANGHAI NEWKING IND EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the main problem existing in the scraper type two-way high-temperature metal hard-sealed ball valve at home and abroad is: because the floating valve seat and the valve body are in dynamic fit, there is no sealing device on the side of the valve cavity. The medium impurities in the cavity will enter the cavity between the spring and the valve body through the matching gap between the floating valve seat and the valve body, making the floating valve seat and the valve body swell and unable to float. Swelling, so that the ball valve cannot be opened and closed flexibly

Method used

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Embodiment Construction

[0010] Now further describe the technical solution of the present invention in conjunction with the accompanying drawings and embodiments.

[0011] The scraper-type two-way high-temperature metal hard-sealed ball valve as shown in Figure 1 includes a valve body, a valve seat, a ball 4, a valve stem 15, a seal and mounting parts, and the valve body is the left valve body 1 and the right valve body 10 through the mounting parts To connect, the mounting piece adopts stud bolts 12 and hex nuts 11. The left valve body 1 and the right valve body 10 are respectively provided with a left valve seat 3 and a right valve seat 6, wherein the left valve seat 3 and the left valve body 1 are fixedly installed, and a graphite sealing ring 2 is arranged between the two, and the right valve Floating installation between the seat 6 and the right valve body 10 is used to absorb high temperature expansion and prevent the spheroid 4 from swelling between the valve seats after high temperature expan...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06
Inventor 王照业
Owner SHANGHAI NEWKING IND EQUIP CO LTD
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