Title:
BALL VALVE
Document Type and Number:
Japanese Patent JP2018071754
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To change a contact state of a ball valve element with respect to a ball valve seat.SOLUTION: A ball valve includes: a valve body in which a valve chamber is formed in a flow passage of a fluid; a ball valve seat arranged by surrounding the flow passage along an inner periphery of the valve body; and a ball valve element in which a through-hole is formed, and which opens/closes the flow passage of the fluid by rotating in the valve chamber. In the valve body, a slide groove for supporting the ball valve element rotatably and slidably to the ball valve seat side is formed on an inner wall of the valve body. In the ball valve element, a rotary shaft is formed supported by the slide groove. In the rotary shaft, a cross-sectional shape of the shaft in the vertical direction is formed in an annular shape in which a distance from a shaft center to a shaft surface varies.SELECTED DRAWING: Figure 4A
More Like This:
| WO/2015/119334 | AIRTIGHT STRUCTURE OF BALL VALVE |
Inventors:
MIYAWAKI SHOTARO
OMAE HIROYUKI
OMAE HIROYUKI
Application Number:
JP2016215930A
Publication Date:
May 10, 2018
Filing Date:
November 04, 2016
Export Citation:
Assignee:
MINEBEAMITSUMI INC
International Classes:
F16K5/06; F16K31/04
Attorney, Agent or Firm:
Toranomon Intellectual Property Office