JPH0325086U

JPH0325086U -

Info

Publication number: JPH0325086U
Application number: JP8579189U
Authority: JP
Priority date: 1989-07-21
Filing date: 1989-07-21
Publication date: 1991-03-14

Description

[Brief explanation of drawings]

第１図は本考案の一実施例であるデイスペンサ
を示す断面図である。１……シリンダ部材、２……流路構成部材、３
，４……調整機構部材、５，６……ねじ、７……
ナツト、８……作動流体用給排ポート、９……息
抜きポート、１０……入口ポート、１１……出口
ポート、１２……シール部材、１３……ピストン
、１３ａ……連通孔、１４ａ，１４ｂ……ベロー
、１５……シリンダ室、１５ａ……上側室、１５
ｂ……下側室、１６……付勢手段、１８……制御
流体用流通路、１９……弁座、２０……弁体、２
０ａ……ベロー、２１……バー、２２……収容室
、２３……プレート、２４……付勢手段、２５…
…ロツクナツト、２６……調整ねじ、２７……息
抜きポート。 FIG. 1 is a sectional view showing a dispenser that is an embodiment of the present invention. 1... Cylinder member, 2... Channel forming member, 3
, 4... Adjustment mechanism member, 5, 6... Screw, 7...
Nut, 8... Working fluid supply/discharge port, 9... Breathing port, 10... Inlet port, 11... Outlet port, 12... Seal member, 13... Piston, 13a... Communication hole, 14a, 14b ... Bellows, 15 ... Cylinder chamber, 15a ... Upper chamber, 15
b...lower chamber, 16...biasing means, 18...control fluid flow path, 19...valve seat, 20...valve body, 2
0a... bellows, 21... bar, 22... accommodation chamber, 23... plate, 24... biasing means, 25...
...lock nut, 26...adjustment screw, 27...breathing port.

Claims

[Claims for Utility Model Registration] 1. A piston housed in a cylinder chamber so as to be movable along its axial direction, and a piston that extends along the axial direction from both end surfaces of the piston, and extends from both end surfaces of the piston along the axial direction. a pair of bellows fixed to the piston, a communication hole formed through the piston along the axial direction and allowing the insides of the pair of bellows to communicate with each other, and a valve seat formed in the communication hole along the circumferential direction thereof. a control fluid flow path in which an inlet port and an outlet port communicate with each other through the pair of bellows and the communication hole; and a control fluid flow path provided opposite to the valve seat within the control fluid flow path on the inlet port side. 1. A dispenser comprising: a valve body, wherein the valve seat contacts and separates from the valve body without sliding as the piston moves. 2. The dispenser according to claim 1, wherein the inner surface of the control fluid flow path and the outer surface of the valve body, which are in contact with the control fluid, are entirely made of PTFE. 3. Claim 1 or 2, characterized in that the valve body is displaced in the pressing direction by a pressing force when the valve seat is in contact with the valve seat, and the amount of displacement of the valve body is adjustable. Dispenser as described.