JPS63123869U

JPS63123869U -

Info

Publication number: JPS63123869U
Application number: JP1533687U
Authority: JP
Priority date: 1987-02-04
Filing date: 1987-02-04
Publication date: 1988-08-11

Description

[Brief explanation of the drawing]

第１図および第２図は本考案によるゲート式ダ
イヤフラム弁の縦断面図、それぞれ全閉時および
全開時の状態を示し、第３図は第２図の状態にお
ける該ダイヤフラム弁の部分切断側面図、第４図
はダイヤフラムとステムの接合要領を示す図、第
５図は第４図のダイヤフラム部分Ａの形状付与の
根拠を示す図、第６図および第８図はそれぞれ弁
閉作動時および弁開作動時にダイヤフラムへの作
用力を示す説明図、第７図および第９図はそれぞ
れ第６図および第８図の場合のダイヤフラムの平
面図、第１０図は本考案のダイヤフラム弁のＬ形
ボデーへの適用例、第１１図および第１２図はそ
れぞれ従来のダイヤフラム弁の異なる実例、第１
３図および第１４図はそれぞれ従来形式のダイヤ
フラムに生ずる不具合状態の説明図である。１……ダイヤフラム弁、２……ボデー、３……
ボンネツト、４……ガイドスリーブ、５……スリ
ーブ、６……ステム、７……Ｏリング、８……位
置ぎめピン、９……ガイドピン、１０……開閉指
示キヤツプ、１１……パツキン、１２……ハンド
ル、１３……デイスクダイヤフラム、１４……流
路、１５……アングルボデー、１６……円筒形部
分、１７……楔形部分、１８……内孔、１９……
シール溝。 1 and 2 are longitudinal sectional views of the gate type diaphragm valve according to the present invention, showing the fully closed and fully open states, respectively, and FIG. 3 is a partially cutaway side view of the diaphragm valve in the state shown in FIG. 2. , Fig. 4 is a diagram showing how to join the diaphragm and stem, Fig. 5 is a diagram showing the basis for giving the shape of the diaphragm portion A in Fig. 4, and Figs. An explanatory diagram showing the force acting on the diaphragm during the opening operation, FIGS. 7 and 9 are plan views of the diaphragm in the cases of FIGS. 6 and 8, respectively, and FIG. 10 shows the L-shaped body of the diaphragm valve of the present invention. 11 and 12 are different examples of conventional diaphragm valves, respectively.
FIGS. 3 and 14 are explanatory diagrams of malfunctions that occur in conventional diaphragms, respectively. 1...Diaphragm valve, 2...Body, 3...
Bonnet, 4... Guide sleeve, 5... Sleeve, 6... Stem, 7... O-ring, 8... Positioning pin, 9... Guide pin, 10... Opening/closing instruction cap, 11... Packing, 12 ... Handle, 13 ... Disk diaphragm, 14 ... Channel, 15 ... Angle body, 16 ... Cylindrical part, 17 ... Wedge-shaped part, 18 ... Inner hole, 19 ...
Seal groove.

Claims

[Scope of utility model registration request]

In the diaphragm valve, the valve stem of the drive section is configured by a drive section including a handle operation mechanism, a main body section including a flow path and a valve seat, and a diaphragm that opens and closes the flow path by the drive mechanism. a hollow flexible member having a generally conical wedge-shaped portion at its distal end, the diaphragm being formed of an elastic material and consisting of an upper cylindrical portion and a lower wedge-shaped portion; the diaphragm forming a wedge-shaped portion of the stem; is suitably slidably housed in its inner wedge-shaped cavity, and said cylindrical portion of the diaphragm is slid sealingly through the guide means within the body bore using a sealing member, and the diaphragm is A gate-type diaphragm valve characterized in that the wedge-shaped portion is configured to appropriately sealingly engage with a valve seat portion of the main body when fully closed.