JPH0370614U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、本考案の一実施例の断面図である。 １…ボデイ、２…流入口、３…一次室、４…流
出口、５…二次室、７…弁口、１０…収容筒体、
１１…上面板、１２…ダイヤフラム、１４…ばね
押え、１５…調節ばね、１８…圧力室、２０…弁
体、２１…ねじ孔、２２…ねじ棒、２３…頭部、
２５…調節ノブ、２７…六角孔、３４…弾性係止
片、３７…嵌合溝。 FIG. 1 is a sectional view of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Body, 2...Inflow port, 3...Primary chamber, 4...Outflow port, 5...Secondary chamber, 7...Valve port, 10...Accommodating cylindrical body,
DESCRIPTION OF SYMBOLS 11... Top plate, 12... Diaphragm, 14... Spring retainer, 15... Adjustment spring, 18... Pressure chamber, 20... Valve body, 21... Threaded hole, 22... Threaded rod, 23... Head,
25... Adjustment knob, 27... Hexagonal hole, 34... Elastic locking piece, 37... Fitting groove.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 流体の流入側の一次室と流出側の二次室とを弁
口を介して連通して設けたボデイの外面に、ダイ
ヤフラムを挟んで収容筒体を固着して、該収容筒
体内にその軸線方向に移動自由に収容したばね押
えと前記ダイヤフラムとの間に調節ばねを介装し
、前記ばね押えの押込量を変化させることにより
前記調節ばねの弾性を調節し、該調節ばねの弾力
と前記ダイヤフラムに作用する前記二次室の圧力
との釣り合いで該ダイヤフラムに連結した弁体を
移動させて前記弁口の開度を変化させることによ
り二次圧を設定された略一定値に維持するように
した減圧弁において、前記収容筒体の突出端面に
設けたねじ孔に前記ばね押えを押圧するねじ棒を
螺合するとともに、該ねじ棒と一体回転可能にか
つ摺動自由に嵌合する嵌合部を設けた筒形の調節
ノブを、前記収容筒体の突出端外周に回転のみを
自由に装着したことを特徴とする減圧弁。 A housing cylinder is fixed to the outer surface of a body with a diaphragm interposed between the body and the primary chamber on the inflow side of the fluid and the secondary chamber on the outflow side communicate with each other through a valve port. An adjustment spring is interposed between the diaphragm and a spring holder housed so as to be freely movable in the direction, and the elasticity of the adjustment spring is adjusted by changing the pushing amount of the spring holder, and the elasticity of the adjustment spring and the diaphragm are adjusted. The secondary pressure is maintained at a set substantially constant value by moving a valve body connected to the diaphragm and changing the opening degree of the valve port in balance with the pressure in the secondary chamber acting on the diaphragm. In the pressure reducing valve according to the present invention, a threaded rod for pressing the spring retainer is screwed into a threaded hole provided on a protruding end surface of the housing cylinder, and a fitting is fitted to be able to rotate integrally with the threaded rod and to freely slide. A pressure reducing valve characterized in that a cylindrical adjustment knob provided with a joint is freely rotatably mounted on the outer periphery of the protruding end of the housing cylinder.