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Two-way sealing butterfly valve with hydraulic-floating valve seat and sediment prevention function

A two-way sealing and floating technology, used in shaft sealing, engine lubrication, valve lift, etc., can solve the problems of difficult processing and assembly of butterfly valves, heavy metal retaining ring, etc., to overcome difficulties in processing and assembly, improve manufacturing and Assembly precision, light movement effect

Active Publication Date: 2014-04-30
TIELING SPECIAL VALVE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the diameter of the butterfly valve is large, the weight of the metal retaining ring is very large, which makes the processing and assembly of the butterfly valve very difficult

Method used

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  • Two-way sealing butterfly valve with hydraulic-floating valve seat and sediment prevention function
  • Two-way sealing butterfly valve with hydraulic-floating valve seat and sediment prevention function
  • Two-way sealing butterfly valve with hydraulic-floating valve seat and sediment prevention function

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Experimental program
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Embodiment Construction

[0021] The principle and structure of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] figure 1 It is the main cross-sectional view of a two-way sealing butterfly valve with hydraulic floating seat and anti-sediment function. The two-way sealing butterfly valve includes a valve body 1, a valve seat 2, a sealing pressure plate 3, a valve plate 4, a pressure block 5, a retaining ring 6, a lower shaft sleeve 12, a lower shaft sleeve lubricating water tank 18, a lower valve shaft 15 and an upper valve shaft 17 . The sealing pressure plate 3 is fixed on the valve plate 4; the lower valve shaft 15 and the upper valve shaft 17 have the same center line, and both are installed on the valve body 1; the valve plate 4 is jointly supported by the lower valve shaft 15 and the upper valve shaft 17. When the upper valve shaft 17 rotates under the action of external force, it will drive the valve body to rotate around the center l...

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Abstract

The invention discloses a two-way sealing butterfly valve with a hydraulic-floating valve seat and a sediment prevention function and relates to the two-eccentric or triple-eccentric two-way sealing butterfly valve. The technical scheme includes that a sealed water groove is arranged on the lower portion of a valve body and along the circumferential direction of the inner wall of the valve body, a first elastic sealing ring is arranged around the closed water groove on the inner wall of the valve body, and a water injection hole is formed in the closed water groove. The valve seat is capable of moving easily along the axis direction of the valve body, and operating performance of the eccentric butterfly valve in opening and closing can be obviously improved; a pressure water channel and the elastic sealing ring jointly form a sediment prevention structure, so that impurities carried along in fluid are prevented from entering fit clearance between a valve shaft and a bushing in use of the butterfly valve, abrasion can be effectively prevented, and the effect of protecting the valve shaft and the bushing can be achieved; convenience in butterfly operation under reverse pressure and reliability of sealing can be effectively improved, and range of application of the butterfly valve can be expanded.

Description

technical field [0001] The invention relates to a bidirectional sealing butterfly valve with a hydraulic floating valve seat and anti-sediment function, in particular to a double eccentric or triple eccentric bidirectional sealing butterfly valve, which is suitable for single-phase or multi-phase fluid transportation containing solid impurities. Background technique [0002] The current advanced butterfly valve technology generally adopts the principle of double eccentricity or triple eccentricity, which can reduce the operating torque of the butterfly valve when it is under positive pressure, making the opening and closing of the valve more convenient and faster. Therefore, eccentric butterfly valves with one-way sealing are mostly used at home and abroad. For the two-way sealing butterfly valve, when the valve plate is under pressure in the opposite direction, not only is it faced with the problem of difficult opening and closing operation of the butterfly valve due to the...

Claims

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Application Information

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IPC IPC(8): F16K1/22F16K1/32F16K1/42F16K41/02
CPCF16K1/224F16K1/2268F16K1/2285F16K1/42F16K27/0218F16N1/00
Inventor 罗先武陈晓刚季斌李振东陈智本王琳黄仁芳
Owner TIELING SPECIAL VALVE
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