JPS5813270A - Relief valve - Google Patents

Relief valve

Info

Publication number
JPS5813270A
JPS5813270A JP11101581A JP11101581A JPS5813270A JP S5813270 A JPS5813270 A JP S5813270A JP 11101581 A JP11101581 A JP 11101581A JP 11101581 A JP11101581 A JP 11101581A JP S5813270 A JPS5813270 A JP S5813270A
Authority
JP
Japan
Prior art keywords
valve
fluid
valve body
opening
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11101581A
Other languages
Japanese (ja)
Inventor
Katsuji Oshita
勝二 大下
Takao Miki
隆雄 三木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shikoku Kakoki Co Ltd
Original Assignee
Shikoku Kakoki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shikoku Kakoki Co Ltd filed Critical Shikoku Kakoki Co Ltd
Priority to JP11101581A priority Critical patent/JPS5813270A/en
Publication of JPS5813270A publication Critical patent/JPS5813270A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

PURPOSE:To provide a relief valve, which can be used concurrently as an ordinary stop valve by changing the piping for a fluid inlet opening in a cylinder heat having therein a piston for driving a valve rod. CONSTITUTION:Fluid pressure acted to the top surface of a piston 6 is used as a valve opening force while fluid pressure acted to the lower surface 4A of a valve body plus the spring force of coil springs 7, 13 are used as valve closing force. When the fluid pressure in a pipe 45 becomes higher than a prescribed value, the piston 6 is forced down by the fluid pressure transmitted via a fluid inlet tube 9, so that the valve is opened and fluid is discharged from a fluid outlet opening 1B. On the other hand, if an external fluid is introduced as a control fluid into a chamber R located on the side of a cylinder head 5A, it is enabled to use the valve as an ordinary stop valve.

Description

【発明の詳細な説明】 この発明は、バルブの流入側あるいは流出側の流体通過
部における流体圧力が設定値以上にならないようにでき
るリリーフバルブに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a relief valve that can prevent fluid pressure in a fluid passage section on the inflow side or outflow side of the valve from exceeding a set value.

ルブ専用のもので他の通常のストップバルブとして利用
することができない。It is exclusive to Lube and cannot be used as a regular stop valve.

この発明は、２〜３個の部品除去あるいは部品交換と配
管によって通常のストップバルブとして使うことができ
るリリーフバルブを得ることを目的とする。The object of this invention is to obtain a relief valve that can be used as a normal stop valve by removing or replacing two or three parts and piping.

以下、この発明を実施例を示す図面を参照して説明する
。なお、この明細書において、上下左右とは第１１Ｎの
上下左右をいうものとする。Hereinafter, the present invention will be described with reference to drawings showing embodiments. In addition, in this specification, the upper, lower, left, and right refer to the upper, lower, left, and right sides of the 11N.

しかしながら、この発明によるリリーフバルブ□ の向きは、第１図のものに限らない。However, the relief valve according to this invention□ The orientation is not limited to that shown in FIG.

リリーフバルブは、横向きの流入側開口（ＩＡ）および
流出側開口（ＩＢ）、上向きのバルブ動作制御部取付開
口（ＩＣ）ならびに下向きの流体正調節部取付開口（Ｉ
Ｄ）を備えかつ隔壁中央水平部に下向きの弁座（ＩＥ）
を有するバルブ本体（１）と、バルブ動作制御部取付開
口（１ｃ）に取付けられてバルブロッド（２）が上下に
貫通されているバルブ動作制御用のシリンダ支持体（３
）と、バルブ本体（１）内にあるバルブロッド（２）の
下端に取付けられた弁体（４）と、シリンダ支持体（３
）の上端に取付けられたバルブ開閉操作シリンダ（５）
と、バルブロッド（２）の上端に取付けられかつシリン
ダ（５）内を上下ゞ摺動するピストン（６）と、バルプ
ロンｔ’、　＋２１の外側に位置しかっシリン□ ダ支持体（３）とビス：トン℃）との間に嵌められたバ
ルブ閉塞用コイルばね（７）と、一端がシリンダヘッド
（５Ａ）、、の流体導入開口（８）に接続され他端カハ
ルブ本体（１）の流体流入側またはその配管に接続され
た流体導入管（９）と、流体圧力調節部数付開口（ＩＤ
）に取付けられた流体圧力調節部本体００）と、この調
節部本体ａαの中央に上下貫通状にねじ込まれた圧力調
節ボルトαυと、バルブ本体（１）内にある圧力調節ポ
ル）（１υの上端に取付けられたばね座ｕｚと、前記弁
体（４）下面とばね座ａ２の間に嵌められたコイルばね
αＪとからなっている。The relief valve consists of a sideways inflow side opening (IA) and an outflow side opening (IB), an upwardly facing valve operation control section mounting opening (IC), and a downwardly facing fluid adjustment section mounting opening (I).
D) and a downward facing valve seat (IE) in the central horizontal part of the bulkhead.
a cylinder support (3) for controlling the valve operation, which is attached to the valve operation control unit mounting opening (1c) and has the valve rod (2) passed through it vertically.
), a valve body (4) attached to the lower end of the valve rod (2) in the valve body (1), and a cylinder support (3).
) Valve opening/closing operation cylinder (5) attached to the upper end
, a piston (6) attached to the upper end of the valve rod (2) and sliding vertically within the cylinder (5), a cylinder support (3) located outside of the valve pron t', +21, and a screw. A coil spring (7) for closing the valve is fitted between the cylinder head (5A), and the other end is connected to the fluid inlet opening (8) of the cylinder head (5A), and the other end is connected to the fluid inflow of the cylinder head (5A). A fluid introduction pipe (9) connected to the side or its piping, and an opening with a number of fluid pressure adjustment parts (ID
), a pressure adjustment bolt αυ screwed through the center of the adjustment unit main body aα, and a pressure adjustment bolt αυ installed in the valve body (1) (1υ). It consists of a spring seat uz attached to the upper end, and a coil spring αJ fitted between the lower surface of the valve body (4) and the spring seat a2.

バルブ本体（１）の左右両側開口（ＩＡ）（ＩＢ）の外
周面には配管接続用のおねじ部（１４１（１５１が設け
られ、上下両開口（ＩＣ）（ＩＤ）には接続フランジ部
αｅ０ηが設けられるとともにこのフランジ部（１６１
Ｑηの背面Ｇ；！テーバ面（１６Ａ）　　（１７Ａ）と
せられている。バルブ本体（１）の隔壁中央水平部には
上下方向の弁孔（ＩＦ）が設けられ、この弁孔（ＩＦ）
の外周下面が弁座（ＩＵ　と小られている。なお、バル
ブ本体（１）は、弁孔（ｌＦ）の外周上面も弁座となし
うるように上下対称に形成されている。Male threads (141 (151) for connecting pipes are provided on the outer peripheral surface of the left and right openings (IA) (IB) of the valve body (1), and connection flanges αe0η are provided on both the upper and lower openings (IC) (ID). is provided and this flange portion (161
Back side G of Qη;! Taber surfaces (16A) (17A) are used. A vertical valve hole (IF) is provided in the central horizontal part of the partition wall of the valve body (1), and this valve hole (IF)
The outer circumferential lower surface of the valve body (1) is small as a valve seat (IU).The valve body (1) is vertically symmetrical so that the outer circumferential upper surface of the valve hole (IF) can also serve as the valve seat.

シリンダ支持体（３）は、下からバルブロッド貫通孔０
０、バルブ閉塞用コイルばね嵌入孔０９およびシリンダ
装着筒状部（イ）を、順次その内径が大きくなるように
段階的に備え、シリンダ装着筒状部（イ）の外周面に・
はおねじ部（２ＯＡ）が設けられ、シリンダ（５）下部
内周面のめねじ部（５Ｂ）にねじ嵌められている。バル
ブ閉塞用コイルばね嵌入孔側の底面には、円筒状のばね
受座（２１Ｊを介して前記ばね（７）が受は止められて
いる。ばね受座因）は、下端には外方に突出するばね受
フランジ部（２１Ａ）を備え、上端には内方に突出する
ばね受７ランジ部（２１Ｂ）を備えており、前記バルブ
ロッド（２）の外側に嵌められ、このばね受座（２１＋
内にはパツキン押え＠を下方に押圧するばね（ハ）が嵌
めらｎている。バルブロッドｆ２１とシリンダ支持体（
３）との間に嵌められたパツキン（２４１は、テフロン
製で摩擦係数が小さく、バルブロッド（２）の摺動抵抗
が小さいため、給油できない場所でも特に問題はなく、
パルブロンド（２）を支持し、円滑かつ迅速な摺動を可
能ならしめている。The cylinder support (3) has a valve rod through hole 0 from below.
0. The coil spring fitting hole 09 for valve closing and the cylinder mounting cylindrical part (A) are provided in stages so that the inner diameter of the cylinder mounting cylindrical part (A) increases, and the outer peripheral surface of the cylinder mounting cylindrical part (A) is
is provided with a male threaded portion (2OA), which is screwed into a female threaded portion (5B) on the inner peripheral surface of the lower part of the cylinder (5). A cylindrical spring seat (the spring (7) is fixed via 21J) is attached to the bottom of the valve closing coil spring insertion hole side, and a cylindrical spring seat (the spring seat is fixed through 21J) is attached to the bottom of the valve closing coil spring fitting hole. It is provided with a spring receiver flange portion (21A) that projects, and a spring receiver 7 flange portion (21B) that projects inward at the upper end, which is fitted on the outside of the valve rod (2), and this spring receiver (21B) is fitted on the outside of the valve rod (2). 21+
A spring (c) is fitted inside to press the seal presser downward. Valve rod f21 and cylinder support (
The gasket (241) fitted between the valve rod (2) is made of Teflon and has a low coefficient of friction, and the sliding resistance of the valve rod (2) is low, so there is no problem even in locations where lubrication is not possible.
It supports the pallbrond (2) and enables smooth and quick sliding.

シリンダ支持体（３）の周壁にはバルブ閉塞用ばね嵌入
孔α９に連通する通妃孔（ハ）がこれと直交状に設けら
れ、その下方外周にバルブ本体（１）への取付フランジ
部■が形成さｎ、ている。この７ラング部内の上面はテ
ーパ面（、・、：：、２６Ａ）とせられ、・１： かつその外周は、前記バルブ本体（１）の７ラング部Ｑ
６１の外周と面一となるように同じ直径とせられている
。この両フランジ部（Ｉ６１＠は、その衝合面にＯリン
グ勾が介装され、クランパ（至）により締結されている
。On the peripheral wall of the cylinder support (3), a through hole (C) communicating with the valve closing spring fitting hole α9 is provided perpendicularly thereto, and on the lower outer periphery thereof, a mounting flange portion ■ to the valve body (1) is provided. is formed n. The upper surface of this 7 rung part is made into a tapered surface (, , ::, 26A), and the outer periphery thereof is the 7 rung part Q of the valve body (1).
It has the same diameter so as to be flush with the outer periphery of 61. Both flanges (I61@) have O-rings interposed on their abutting surfaces, and are fastened together by a clamper.

クランパ（イ）は、第２図および第４図に示されている
ように、内周面に門溝（２９Ａ）（２９Ｂ）をもつ断面
路コ字形の２つ割リング（２８Ａ）　　（２８Ｂ）と、
両リング（２８％）（２８Ｂ）の各一端を連結するリン
グ中心軸線と平行な連結ピ・ン（至）と、両リング（２
８Ａ）　　（２８Ｂ）のそれぞれ他端に外方に突出され
た締付耳部（３１Ａ）　　（３１Ｂ）のうち一方の耳部
（３１Ａ）に連結ピン（至）と平行なピン（至）により
回動自在に取付けられた締付ボルト（至）と、蝶ナツト
（財）とから構成されている。±して、リング（２８Ａ
）：１ （２８Ｂ）の各門溝（２９Ａ）（２９Ｂ）の対向内面は
、バルブ本ｚ体（１）の開口（ＩＣ）およびシリンダ支
持体（３）のフランジ部テーパ面（１６Ｎ（２６Ａ）と
ほぼ同じテーパ面とせられ、前記７ラング部叫（イ）を
外側から抱いて締め付けるようになっている。また、各
・リング（２８Ａ）（２８Ｂ）の耳部（３１Ａ）（３１
Ｂ）は二股状となっていて、締付ボルト（至）の基端は
耳部（３ＩＡ）の二股間に嵌められ、他方の耳部（３１
Ｂ）の二股間に締付ボルト（至）が出し入れできるよう
にせられている。As shown in Figs. 2 and 4, the clamper (A) has two split rings (28A) (28B) with a U-shaped cross section and grooves (29A) (29B) on the inner peripheral surface. and,
A connecting pin (to) parallel to the ring center axis connecting each end of both rings (28%) (28B), and a connecting pin (to) connecting each end of both rings (28%) (28B)
8A) (28B), one of the clamping ears (31A) and (31B) protruding outward from the other end is rotated by a pin (to) parallel to the connecting pin (to). It consists of a movably mounted tightening bolt and a wing nut. ±, ring (28A
):1 The opposing inner surfaces of each gate groove (29A) (29B) of (28B) are the opening (IC) of the valve main body (1) and the tapered surface of the flange part (16N (26A) of the cylinder support body (3) It has a tapered surface that is almost the same as that of the ring, and is designed to hold and tighten the 7th rung section (A) from the outside.In addition, the ears (31A) (31
B) has a bifurcated shape, and the base end of the tightening bolt (to) is fitted between the two prongs of the ear (3IA), and the base end of the tightening bolt (to) is inserted into the fork of the other ear (31
A tightening bolt (to) can be inserted and removed between the two legs of B).

バルブロッド（２）の上端外周には、おねじ部（２Ａ）
が設けられ、連結ねじソケット（至）の下半部にねじ嵌
められている。この連結ねじソケット（至）は、その上
半部にピストン（６）の中心を貫通して下方に突出した
バルブ開閉動検出ロッド（至）の下端ねじ部（３６Ａ）
がねじ込まれて、ノくルブロッド（２）、ピストン（６
１およびバルブ開閉動検出ロッド（至）が一体的に連結
されている。There is a male thread (2A) on the outer periphery of the upper end of the valve rod (2).
is provided and screwed into the lower half of the connecting screw socket (to). This connection screw socket (to) has a lower end threaded portion (36A) of a valve opening/closing movement detection rod (to) that penetrates the center of the piston (6) and protrudes downward in its upper half.
is screwed in, and the nozzle rod (2) and piston (6) are screwed in.
1 and the valve opening/closing motion detection rod (to) are integrally connected.

ピストン（６）の前記検出ロッド（至）貫通孔（６Ａ）
には０リング節が介装され、ピストン（６）の外周面に
は、ピスト弓鶴乙り嵌められている。このピ゛ストンリ
ング（至）は、第３図に示さｎているように、その断面
形状が略Ｎ字形に形成されているので、摺動方向および
これと直角な方向（放射方向）へのばね作用があり、摺
動抵抗が小さく、作動が円滑かつ確実になされる。The detection rod (to) through hole (6A) of the piston (6)
An O-ring joint is interposed in the piston (6), and a piston (6) is fitted onto the outer circumferential surface of the piston (6). As shown in Fig. 3, this piston ring (end) has a substantially N-shaped cross section, so that it can be easily moved in the sliding direction and in the direction perpendicular to this (radial direction). It has spring action, low sliding resistance, and smooth and reliable operation.

シリンダ（５）のシリンダヘッド（５Ａ）は、上端が突
出状に縮径さｎるとと−もに中央の検出ロッド貫通孔の
上部外周゛にパツキン室（至）が形成され、Ｕパツキン
＋４Ｉが前記検出ロッド（至）との間に嵌め込まｎて゛
いる。（４１）はパツキン押え、（転）はパツキン押え
固定用のＣりング、（０はキャップ、（財）はダストシ
ールである。The cylinder head (5A) of the cylinder (5) has an upper end that is reduced in diameter to a protruding shape, and a packing chamber (to) is formed on the upper outer periphery of the central detection rod through hole. is fitted between the detection rod and the detection rod. (41) is a packing holder, (Ro) is a C ring for fixing the packing holder, (0 is a cap, and (goods) is a dust seal.

シリンダヘッド（５Ａ）の流体導入開口（８）に接続さ
れた流体導入管（９）の他端は、バルブ本体（１）の流
入測量Ｑ（ＩＡ）に接続された配管（ａに連通状に接続
されており、バルブ通過部流体がシリンダヘッド（５Ａ
）側室ＩＲＩに導びかれている。The other end of the fluid introduction pipe (9) connected to the fluid introduction opening (8) of the cylinder head (5A) is in communication with the pipe (a) connected to the inflow measurement Q (IA) of the valve body (1). The fluid passing through the valve is connected to the cylinder head (5A
) is guided by the concubine IRI.

力 流体圧ゞ調節部本体ααは、上端部外周に接続７ランジ
部■を有する筒状体で、下半部のボルト貫通孔（４ηの
内径は上半部の内径よりも小さく、しかもその大半にめ
ねじ部（４７Ａ）が設けられ、このめねじ部（４７Ａ）
に圧力調節ボルト（Ｉｌ＋がねじ込まれている。前記接
続７ランジ部園の外径は、バルブ本体（１）のフランジ
部（１７１の外径と等しくせられ、かっこのフランジ部
下面はテーパ面（４６Ａ）とせられている。なお、この
テーパ面（４６Ａ）は、前記接続７ランジ部αｅ０７）
＠のテーパ面（１６Ａ）（１７Ａ）（２６Ａ）のテーパ
角度と等しくせられ、′同一形状、寸法のクランパ■に
よって締結できるようになされている。また、両７ラン
ジ部ａη（個は、その衝合面にＯリング（社）が介装さ
れ、クランパ■により着脱自在に締結されており、７ラ
ング部■と同じ形状、寸法の接続フランジ部を有する盲
蓋（図示省略）と交換できる。The force fluid pressure adjustment unit main body αα is a cylindrical body with a connecting 7 flange part ■ on the outer periphery of the upper end, and the inner diameter of the bolt through hole 4η in the lower half is smaller than the inner diameter of the upper half, and most of it A female threaded portion (47A) is provided, and this female threaded portion (47A)
A pressure adjustment bolt (Il+) is screwed into the flange.The outer diameter of the flange portion (171) of the connection 7 is made equal to the outer diameter of the flange portion (171) of the valve body (1), and the lower surface of the flange of the bracket is a tapered surface ( 46A).This tapered surface (46A) is the connection 7 flange portion αe07).
The taper angle is made equal to the taper angle of the tapered surfaces (16A), (17A), and (26A) of @, and can be fastened with a clamper (2) having the same shape and size. In addition, both 7 lang parts aη (individuals) have an O-ring (manufactured by Co., Ltd.) interposed on their abutting surfaces, and are removably fastened by a clamper ■, and a connecting flange having the same shape and dimensions as the 7 rung part ■. It can be replaced with a blind lid (not shown) having a

圧力調節ボルトα１）とボルト貫通孔（４ηの間にはＯ
リング（４ωが介装されている。圧カ真節ボルトａυの
先端は縮径され、この締径部がばね座Ｑｌの中央に設け
られた孔（１２Ａ）ｊこ嵌め合わされている。コイルば
ねａ急の上端は、弁体（４）の下面（４Ａ）に当接゛す
るばね座（７）の下面に当接せられている。したが□っ
て、コイルばねａ３およびばね座ａクーを取りはずせば
、通常のストップバルブとして使用可能である。There is an O between the pressure adjustment bolt α1) and the bolt through hole (4η).
A ring (4ω is interposed). The tip of the compression bolt aυ is reduced in diameter, and this tightened diameter portion is fitted into the hole (12A) j provided in the center of the spring seat Ql. Coil spring The steep upper end a is in contact with the lower surface of the spring seat (7) which is in contact with the lower surface (4A) of the valve body (4).However, □, the coil spring a3 and the spring seat a If removed, it can be used as a normal stop valve.

上記のリリーフバルブは、シリンダヘッド（５Ａ）側の
室（Ｒ）に、流入側流体通過部の流体が導入されている
ので、バルブを開けるカはピストン（６）頂面に作用す
る流体圧力であり、バルブを閉じる力は弁体下面（４Ａ
）に作用する流体圧力にコイルばね（７）および匝のば
ねカを加えたものである。この流体圧力を受ける面積は
、ピストン（６）上面の方が弁体下面（４Ａ）よりも大
きいため、流体圧力だけにょる力関係を考えれば、バル
ブを開けるカが閉じるカよりも常に太き（、両者のカの
差は流体圧力が高くなるほど大きくなる。他方、バルブ
を閉じる方向に作用するコイルばね（７）のばねカは、
バルブが閉じているときに一定であるが、コイルばねａ
３のばね力は、圧力調節ボルトαυを回動させる２とに
よって、任意に変化させることができる。したがつて、
圧力調節ボルト（ＩＩによるコイルばね（１３のばね力
を調節することによって、バルブ本体（１）内に流入す
る流体圧力すなわち配管（ハ）系内の最高流体圧力を任
意に設定することができる。すなわち、配管−系内の流
体圧力が設定値以上になれば、その流体圧力によってピ
ストン（６）が押憎り し下げられ、バルブが開いて、流出ゞ開口（ＩＢ）から
流体が流出する。そして、配管ｌａ系内の流体圧力が設
定値以下になれば、バルブが閉じる。In the above-mentioned relief valve, the fluid in the inflow side fluid passage part is introduced into the chamber (R) on the cylinder head (5A) side, so the force for opening the valve is the fluid pressure acting on the top surface of the piston (6). Yes, the force to close the valve is applied to the lower surface of the valve body (4A
) is the sum of the fluid pressure acting on the coil spring (7) and the spring force of the bowl. The area that receives this fluid pressure is larger on the upper surface of the piston (6) than on the lower surface of the valve body (4A), so if we consider the force relationship based only on fluid pressure, the force that opens the valve is always greater than the force that closes it. (The difference between the two forces increases as the fluid pressure increases.On the other hand, the spring force of the coil spring (7) that acts in the direction of closing the valve is
is constant when the valve is closed, but the coil spring a
The spring force 3 can be arbitrarily changed by rotating the pressure adjustment bolt αυ. Therefore,
By adjusting the spring force of the coil spring (13) by the pressure adjustment bolt (II), the fluid pressure flowing into the valve body (1), that is, the maximum fluid pressure within the piping (c) system, can be arbitrarily set. That is, when the fluid pressure in the piping system exceeds a set value, the piston (6) is pushed down by the fluid pressure, the valve is opened, and the fluid flows out from the outflow opening (IB). Then, when the fluid pressure in the piping la system becomes less than the set value, the valve closes.

このようにして、配管（４５１系内の流体圧力が常に設
定値以下になるようにバルブ開閉動作が自動的に行なわ
れ、安全が維持される。In this way, valve opening and closing operations are automatically performed so that the fluid pressure within the piping system (451) is always below the set value, and safety is maintained.

なお、前記シリンダ・・ヘッド（５Ａ）側室［Ｒ１内に
系外の流体たとえば空気を制御１尊として導入すること
によって通常のストッパバルブとして使用できる。この
ときコイルばねａ３を取りはずした方が好ましい。また
、圧力調節ボルトＯＱ、コイルばね（１３を取りはずし
て盲蓋（図示省略）と取り替えてもよい。It can be used as a normal stopper valve by introducing a fluid outside the system, such as air, into the side chamber [R1] of the cylinder head (5A) as a control valve. At this time, it is preferable to remove the coil spring a3. Further, the pressure adjustment bolt OQ and the coil spring (13) may be removed and replaced with a blind cover (not shown).

上記実施例によれば、流体圧力調節部をクランパ■の簡
単な操作で容易かつ迅速に着脱できる。また、バルブロ
ッド（２）の摺動部には、テフロン製のパツキン（財）
が使用されこれによってバルブロッド（２）が支持され
ているので、従来の０し リングを使用築た場合のようなＯリングのねじれや寸法
のばらつきによる摺動不良およびシール不良などがなく
、摺動抵抗が小さいためバルブロッド（２）の作動が迅
速かつ円滑であり、また、ピストンリング（至）は断面
形ｉ・：が略Ｎ形でばね作用をもっているので、ピスト
ン（６）の摺動が迅速かつ円滑でバルブ開閉動作を敏速
に行ない、配管系圧力変、動の応答性が良好である。According to the above embodiment, the fluid pressure adjusting section can be easily and quickly attached and detached by a simple operation of the clamper (2). In addition, the sliding part of the valve rod (2) is made of Teflon packing.
is used and the valve rod (2) is supported by this, so there is no sliding failure or sealing failure due to twisting of the O-ring or variation in dimensions, which is the case when conventional O-rings are used. Since the dynamic resistance is small, the valve rod (2) operates quickly and smoothly, and the piston ring (to) has an approximately N-shaped cross section and has a spring action, so the sliding movement of the piston (6) is smooth. The valve opens and closes quickly and smoothly, and has good response to pressure changes and movements in the piping system.

以上のように、この発明のリリーフバルブによれば、配
管系内の流体圧力を一定値以下に円滑かつ確実に制御す
ることができ、圧力設定および調整は調節ポル）　０１
１を外部から回動させるだけの簡単な操作で行なうこと
ができ、そのうえ、シリンダヘッド（５Ａ）の流体導入
開口（８）に対する配管を変えることにより、そのまま
あるいは流体圧力調節部本体α〔を盲蓋等と取替えて、
通常のストップバルブとして利用することもできる。As described above, according to the relief valve of the present invention, the fluid pressure within the piping system can be smoothly and reliably controlled to a certain value or less, and the pressure setting and adjustment can be performed using the adjustment port.
This can be done with a simple operation of rotating the valve 1 from the outside, and in addition, by changing the piping for the fluid introduction opening (8) of the cylinder head (5A), it can be used as is or with the fluid pressure regulator body α [blind]. Replace the lid etc.
It can also be used as a regular stop valve.

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

□ 図面はこの発明の実施例を示すもので、第１＋：ｌ’ｌ
’ｌ’　。 図は縦断面図、第２図は第１図の■−■線に沿う断面図
、第３図はピストンリングの断面図、第４図は全体分解
斜視図である。 （１）０・バルブ本体、（１〜・・・、流入側開口、（
ＩＢ）流出側開口、（ＩＣ）・・・バルブ動作制御部取
付開口、（ＩＤ）・・・流体正調節部取付開口、（ＩＦ
）・・・弁座、（２）・・・バルブロッド、（３）・・
・シリンダ支持体、（４）・・・弁体、（５）・・・バ
ルブ開閉操作シリンタ、（５Ａ）・・・シリンダヘッド
、（６）・・・ピストン、（７）・・・バルブ閉塞用コ
イルばね、（８）・・・流体導入開口、（９）・・・流
体導入管、ａＩ・・・流体圧力調節部本体、（１１１−
・・圧力調節ボルト、α２・・・ばね座、ａ３・・・コ
イルばね。 以上 特許出願人　　四国化工機株式会社 外４名 第２図□ The drawings show embodiments of this invention.
'l'. 2 is a sectional view taken along the line ■--■ in FIG. 1, FIG. 3 is a sectional view of the piston ring, and FIG. 4 is an overall exploded perspective view. (1) 0. Valve body, (1~..., inflow side opening, (
IB) Outlet side opening, (IC)...Valve operation control unit installation opening, (ID)...Fluid positive adjustment unit installation opening, (IF
)... Valve seat, (2)... Valve rod, (3)...
・Cylinder support, (4)...Valve body, (5)...Valve opening/closing operation cylinder, (5A)...Cylinder head, (6)...Piston, (7)...Valve closing Coil spring for (8)...Fluid introduction opening, (9)...Fluid introduction pipe, aI...Fluid pressure adjustment unit main body, (111-
...Pressure adjustment bolt, α2...Spring seat, a3...Coil spring. Patent applicants: 4 people including Shikoku Kakoki Co., Ltd. Figure 2

Claims (1)

【特許請求の範囲】[Claims] 横向きの流入８８日ＣＩＡ）および流出側開口（１Ｂ）
、上向きのバルブ動作制御部取付開口（ＩＣ）ならびに
下向きの流体正調節部取付開口（ＩＤ）を備えかつ隔壁
中央水平部に下向きの弁座（ＩＥ）を有するバルブ本体
（１）と、バルブ動作制御部取付間０（ＩＣ）に取付け
られてバルブロッド（２）が上下に貫通されているバル
ブ動作制御用のシリンダ支持体（３）と、バルブ本体（
１）内にあるバルブロッド（２）の下端に取付けられた
弁体（４）と、シリンダ支持体（３）の上端に取付けら
れたバルブ開閉操作シリンダ（５）と、パルブロンド（
２）の上端に取付けられかつシリンダ（５）内を上下に
摺動するピストン（６）と、パルブロンド（２）の外側
に位置しかつシリンダ支持体（３）とピストン（６）と
の間に嵌められたバルブ閉塞用コイルばね（７）と、一
端がシリンダヘッド（５Ａ）の流体導入開口（８）に接
続され他端がバルブ本体（１）の流体流入側に接続され
た流体導入管（９）と、流体正調節部取付開口（ＩＤ）
に取付けらｎた流体圧力調節部本体叫と、この調節部本
体（１０１の中央に上下貫通状にねじ込まれた圧力調節
ボルトＱｌ）と、バルブ本体（１）内にある圧力調節ボ
ルトαυの上端に取付けられたばね座ａ２と、前記弁体
（４）下面とばね座αりの間に嵌められたコイルばね屯
とからなるリリーフバルブ。Lateral inflow (88 days CIA) and outflow opening (1B)
, a valve body (1) having an upward valve operation control part mounting opening (IC) and a downwardly facing fluid control part mounting opening (ID), and a downwardly facing valve seat (IE) in the central horizontal part of the bulkhead; A cylinder support (3) for controlling the valve operation, which is installed between the control unit attachment points (IC) and has the valve rod (2) passed through it vertically, and the valve body (
1), a valve body (4) attached to the lower end of the valve rod (2), a valve opening/closing operation cylinder (5) attached to the upper end of the cylinder support (3), and a pallbrond (
2) a piston (6) attached to the upper end and sliding up and down within the cylinder (5); and a piston (6) located outside the pallbrond (2) and between the cylinder support (3) and the piston (6). a valve closing coil spring (7) fitted in the valve-closing coil spring (7), and a fluid introduction pipe whose one end is connected to the fluid introduction opening (8) of the cylinder head (5A) and the other end is connected to the fluid inflow side of the valve body (1). (9) and fluid adjustment part installation opening (ID)
The fluid pressure regulator body (pressure regulating bolt Ql screwed through the center of the valve body 101 vertically), the upper end of the pressure regulating bolt αυ in the valve body (1) A relief valve consisting of a spring seat a2 attached to the valve body (4) and a coil spring fitting fitted between the lower surface of the valve body (4) and the spring seat α.
JP11101581A 1981-07-16 1981-07-16 Relief valve Pending JPS5813270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11101581A JPS5813270A (en) 1981-07-16 1981-07-16 Relief valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11101581A JPS5813270A (en) 1981-07-16 1981-07-16 Relief valve

Publications (1)

Publication Number Publication Date
JPS5813270A true JPS5813270A (en) 1983-01-25

Family

ID=14550228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11101581A Pending JPS5813270A (en) 1981-07-16 1981-07-16 Relief valve

Country Status (1)

Country Link
JP (1) JPS5813270A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100383447C (en) * 2006-04-27 2008-04-23 上海金盾实业集团有限公司 Prepared type fire-extinguishing device
CN102818055A (en) * 2012-09-11 2012-12-12 中国人民解放军总后勤部油料研究所 Automatic block valve
CN103075547A (en) * 2011-10-25 2013-05-01 温永林 Pressure relief safety valve
CN108252973A (en) * 2018-01-20 2018-07-06 邵立坤 A kind of plug-in direct acting proportional pressure-reducing valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100383447C (en) * 2006-04-27 2008-04-23 上海金盾实业集团有限公司 Prepared type fire-extinguishing device
CN103075547A (en) * 2011-10-25 2013-05-01 温永林 Pressure relief safety valve
CN102818055A (en) * 2012-09-11 2012-12-12 中国人民解放军总后勤部油料研究所 Automatic block valve
CN108252973A (en) * 2018-01-20 2018-07-06 邵立坤 A kind of plug-in direct acting proportional pressure-reducing valve
CN108252973B (en) * 2018-01-20 2020-07-14 上海欧特莱阀门机械有限公司 Plug-in type direct-acting proportional pressure reducing valve

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