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1. WO2020138347 - CENTRIC BUTTERFLY VALVE

Publication Number WO/2020/138347
Publication Date 02.07.2020
International Application No. PCT/JP2019/051263
International Filing Date 26.12.2019
Chapter 2 Demand Filed 28.10.2020
IPC
F16K 1/226 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
1Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
16with pivoted closure members
18with pivoted discs or flaps
22with axis of rotation crossing the valve member, e.g. butterfly valves
226Shape or arrangement of the sealing
CPC
F16K 1/226
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
1Lift valves ; or globe valves; , i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
16with pivoted closure-members
18with pivoted discs or flaps
22with axis of rotation crossing the valve member, e.g. butterfly valves
226Shaping or arrangements of the sealing
Applicants
  • 株式会社キッツ KITZ CORPORATION [JP]/[JP]
Inventors
  • 五味 健 GOMI Takeshi
Agents
  • 小林 哲男 KOBAYASHI Tetsuo
Priority Data
2018-24855528.12.2018JP
2018-24855728.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CENTRIC BUTTERFLY VALVE
(FR) VANNE PAPILLON CENTRIQUE
(JA) 中心型バタフライバルブ
Abstract
(EN)
[Problem] To provide a centric butterfly valve having good sealing properties around a stem, low operational torque during opening and closing, and excellent durability. [Solution] This centric butterfly valve (1) is characterized by having a valve element (3) in which top and bottom boss surfaces (19, 29) have a spherical surface shape, and a valve vane outer peripheral end (24) has an M-shaped cross-section portion (29) formed by a gently sloping connection between curved peak portions (27) and a curved valley portion (28), the valve element (3) having extended portions (41) in which the spherical surfaces of the top and bottom boss surfaces (19, 20) slightly and continuously extend toward a valve vane portion (40).
(FR)
Le problème à résoudre dans le cadre de la présente invention est de proposer une vanne papillon centrique qui ait des propriétés d'étanchéité satisfaisantes autour d'une tige, un faible couple de fonctionnement durant l'ouverture et la fermeture, et une excellente durabilité. La solution proposée consiste en une vanne papillon centrique (1) qui est caractérisée en ce qu'elle a un élément de vanne (3) dans lequel des surfaces de bossage supérieure et inférieure (19, 29) ont une forme de surface sphérique, et une extrémité périphérique externe d'aube de vanne (24) a une partie de section transversale en forme de M (29) formée par une liaison légèrement inclinée entre des parties de sommet incurvées (27) et une partie de vallée incurvée (28), l'élément de vanne (3) ayant des parties étendues (41) dans lesquelles les surfaces sphériques des surfaces de bossage supérieure et inférieure (19, 20) s'étendent légèrement et en continue vers une partie d'aube de vanne (40).
(JA)
【課題】ステム周囲シール性が良好であるとともに開閉操作トルクが小さく、また耐久性に優れた中心型バタフライバルブを提供すること。 【解決手段】天地ボス面(19、29)を球面状とするとともに弁翼外周端(24)をアール形状の頂部(27)とアール形状の谷部(28)とをなだらかに繋いだ断面M字状部(29)とし、且つ、天地ボス面(19、20)の球面を弁翼部(40)側に連続的にわずかに延ばした延伸部(41)を有する弁体(3)を有することを特徴とする中心型バタフライバルブ(1)である。
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