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Patent Searching and Data


Title:
BALL VALVE AND SEALING ELEMENT FOR BALL VALVE
Document Type and Number:
WIPO Patent Application WO/2017/084418
Kind Code:
A1
Abstract:
A sealing element for a ball valve, comprising a first sealing ring (1) and a second sealing ring (2) with the central axes thereof being parallel to each other, the first sealing ring (1) and the second sealing ring (2) being made of different materials, the first sealing ring (1) being located at a side of the second sealing ring (2) axially towards a ball (4) in the ball valve, and being used to contact a ball surface (40) of the ball (4) to form sealing; the first sealing ring (1) and the second sealing ring (2) being arranged fixedly, and the first sealing ring (1) being a stamp-molded annular PTFE sheet. Since the friction coefficient of PTFE is very low, the friction torque between the first sealing ring (1) and the ball surface (40) of the ball (4) is relatively small, the first sealing ring (1) being not easily to wear and not easily prone to sealing failure. In addition, the first sealing ring (1) is formed by means of stamp-molding, the manufacturing process is simpler than other manufacturing process, and the mass production of the first sealing ring (1) can be achieved by means of the same stamping die, improving the producing efficiency of the first sealing ring (1), and reducing the producing cost of the first sealing ring (1). Furthermore, a ball valve using said sealing element is disclosed.

Inventors:
LIU, Xin (No. 40, 258#Anli RD. Anting, Jiading District, Shanghai 4, 201804, CN)
ZHANG, Yuelin (5035#, Yinyueyuan Shijiyuan, Loudong Stree, Taicang Jiangsu 0, 215400, CN)
NIEBLING, Uwe (5 Uferstr, Diespeck, 91456, DE)
ARIMA, Gilson (40 Rua Capivari, Sorocaba -485, 18065-485, BR)
LI, Meng (Anting New Town, FengYuanAnli Road, Anting, Shanghai 5, 201805, CN)
ZHOU, Huilan (Room 6-208, No. 1Xiaobeimen Stree, Taicang Jiangsu 0, 215400, CN)
Application Number:
CN2016/098326
Publication Date:
May 26, 2017
Filing Date:
September 07, 2016
Export Citation:
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Assignee:
SCHAEFFLER TECHNOLOGIES AG & CO. KG (Industriestrasse 1-3, Herzogenaurach, 91074, DE)
LIU, Xin (No. 40, 258#Anli RD. Anting, Jiading District, Shanghai 4, 201804, CN)
ZHANG, Yuelin (5035#, Yinyueyuan Shijiyuan, Loudong Stree, Taicang Jiangsu 0, 215400, CN)
NIEBLING, Uwe (5 Uferstr, Diespeck, 91456, DE)
ARIMA, Gilson (40 Rua Capivari, Sorocaba -485, 18065-485, BR)
LI, Meng (Anting New Town, FengYuanAnli Road, Anting, Shanghai 5, 201805, CN)
ZHOU, Huilan (Room 6-208, No. 1Xiaobeimen Stree, Taicang Jiangsu 0, 215400, CN)
International Classes:
F16K5/08; F16K5/20
Foreign References:
CN201779297U2011-03-30
CN203442200U2014-02-19
CN103486289A2014-01-01
CN202790658U2013-03-13
CN1214200C2005-08-10
CN1967164A2007-05-23
CN201502736U2010-06-09
JP2000179712A2000-06-27
EP0300403A11989-01-25
KR20090049230A2009-05-18
Other References:
See also references of EP 3379116A4
None
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (7th Floor, Scitech PlaceNo. 22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, 100004, CN)
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