Title:
GATE VALVE FOR VACUUM
Document Type and Number:
Japanese Patent JP2017078515
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a gate valve for vacuum which inhibits particles from being generated by contact of metals while securely maintaining a sealing state of a valve plate and enables easy maintenance.SOLUTION: A gate valve 10 for vacuum includes: a casing 12 having an opening 12a; a valve plate 14 which swings in the casing 12 to open or close the opening 12a; and position adjustment means 18 which causes the valve plate 14 to adhere to the casing 12 when the valve plate 14 is in a fully closed position where the valve plate 14 fully closes the opening 12a. The valve plate 14 has a cushion material 34 which elastically contacts with the casing 12 when the valve plate 14 adheres to the casing 12. An O ring 40 is installed buried on a surface of the position adjustment means 18 which contacts with the valve plate 14. The O ring 40 contacts with the valve plate 14 on a surface of the valve plate 14 which is opposite to the cushion material 34.SELECTED DRAWING: Figure 1
Inventors:
BYERS EMMANUEL
KIMURA MIE
KIMURA MIE
Application Number:
JP2016231199A
Publication Date:
April 27, 2017
Filing Date:
November 29, 2016
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES
International Classes:
F16K3/10; F16K51/02
Domestic Patent References:
| JP2004204996A | 2004-07-22 | |||
| JP2009156404A | 2009-07-16 | |||
| JP2011117488A | 2011-06-16 | |||
| JPH031365U | 1991-01-09 |
Foreign References:
| WO2013073039A1 | 2013-05-23 | |||
| WO2008023499A1 | 2008-02-28 |
Attorney, Agent or Firm:
Shinichi Kikuchi
Toru Kikuchi
Hidetoshi Matsumoto
Toru Kikuchi
Hidetoshi Matsumoto