Title:
VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/199624
Kind Code:
A1
Abstract:
This valve device is provided with a body (10) having passages (11, 14) and valve shaft holes (17a, 17b, 17c), a valve shaft (20) passed through the valve shaft holes in a rotatable manner, and butterfly valves (30, 40). The butterfly valves (30, 40) include: first contour parts (31, 41) that are fixed to the valve shaft in order to close off the passages at positions set apart from the valve shaft holes toward the downstream side (upstream side) of the passages, said first contour parts (31, 41) being disposed flanking a straight line (CL) parallel to the valve shaft to form prescribed outer contour parts; and second contour parts (32, 42) forming outer contour parts that are smaller than the first contour parts. The body (10) includes first seal parts (12, 15) with which the first contour parts are brought into contact and second seal parts (13, 16) with which the second contour parts are brought into contact within the passages. Fluid leakage in a closed state can thereby be reliably prevented.
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Inventors:
ISHII TOSHIAKI (JP)
Application Number:
PCT/JP2017/014439
Publication Date:
November 23, 2017
Filing Date:
April 07, 2017
Export Citation:
Assignee:
MIKUNI KOGYO KK (JP)
International Classes:
F16K1/22; F02D9/10; F16K1/226
Foreign References:
| JP2010139073A | 2010-06-24 | |||
| JPH09511811A | 1997-11-25 | |||
| JPH06229261A | 1994-08-16 |
Attorney, Agent or Firm:
YAMAMOTO Takatoshi (JP)
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