JPS6179077A - Diaphragm valve - Google Patents

Diaphragm valve

Info

Publication number
JPS6179077A
JPS6179077A JP20258984A JP20258984A JPS6179077A JP S6179077 A JPS6179077 A JP S6179077A JP 20258984 A JP20258984 A JP 20258984A JP 20258984 A JP20258984 A JP 20258984A JP S6179077 A JPS6179077 A JP S6179077A
Authority
JP
Japan
Prior art keywords
diaphragm
valve
holder
fluid passage
diaphragm holder
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
JP20258984A
Other languages
Japanese (ja)
Inventor
Hisayoshi Mese
央欣 目瀬
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.)
Fujikin Inc
Original Assignee
Fujikin Inc
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 Fujikin Inc filed Critical Fujikin Inc
Priority to JP20258984A priority Critical patent/JPS6179077A/en
Publication of JPS6179077A publication Critical patent/JPS6179077A/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
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
    • F16K7/126—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm the seat being formed on a rib perpendicular to the fluid line

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)

Abstract

PURPOSE:To eliminate the need for providing a diaphragm with the self-restoring characteristics and enable flow rate of being adjusted accurately to a micro degree by performing a depressing-down actin or a lifting-up action of the diaphragm by use of a diaphragm holder. CONSTITUTION:A diaphragm holder 4 is jointed with the upper face of a diaphragm 3 as to move along with the middle thereof. When a handle 27 is turned clockwise and counterclockwise, a valve rod 5 is turned and the diaphragm holder 4 is thereby moved up and down. When the diaphragm holder 4 is lowered, the diaphragm 3 comes to make close contact with a sealing face 12 including the top face of a weir 7. A fluid passage 6 will then be closed. On the contrary, when the diaphragm holder 4 is lifted up, the diaphragm 3 is also pulled up. The fluid passage 6 will then be opened.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、ダイヤフラム弁に関する。[Detailed description of the invention] Industrial applications This invention relates to a diaphragm valve.

従来技術とその問題点 一般にダイヤフラム弁は、弁箱と弁蓋との間に両者の間
を遮断するように周縁部を固定されたダイヤフラムと、
弁蓋内にはめ入れられたダイヤフラム押えと、ダイヤフ
ラム押えを上下動させる弁棒とからなり、弁箱には流体
通路が設けられるとともに、流体通路の途中にダイヤフ
ラムの中央部を密着さ才るようにせきが設けられており
、弁棒を操作してダイヤフラムの中央部をせきに密着・
離隔させることによって流路を開閉するものである。と
ころが、このダイヤフラム弁では、流路を開鎖する場合
にはダイヤフラムが弁棒の回動操作によって強制的に押
し下げられるが、流路を開放する場合には流体圧力また
はダイヤ、フラムの自己復帰力によってダイヤフラムが
引き上げられるようになっており、そのためにつぎの問
題点がある。第１に、流路を開放した場合の流量調節が
困難である。第２に、ダイヤフラムに自己復帰力を付与
するために、ダイヤフラムの材質として特殊なものを必
要とする。Prior art and its problems In general, a diaphragm valve includes a diaphragm whose peripheral portion is fixed between a valve box and a valve cover so as to block the gap between the two.
It consists of a diaphragm holder fitted into the valve lid and a valve stem that moves the diaphragm holder up and down.A fluid passage is provided in the valve box, and the center part of the diaphragm is placed in close contact with the valve body in the middle of the fluid passage. A weir is provided, and by operating the valve stem, the center of the diaphragm can be brought into close contact with the weir.
By separating them, the flow path is opened and closed. However, with this diaphragm valve, when opening and closing the flow path, the diaphragm is forcibly pushed down by rotating the valve stem, but when opening the flow path, the diaphragm is forced down by fluid pressure or the self-returning force of the diaphragm and the diaphragm. The diaphragm is pulled up, which causes the following problem. First, it is difficult to adjust the flow rate when the flow path is open. Second, in order to impart self-resetting force to the diaphragm, a special material is required for the diaphragm.

この発明の目的は、上記問題点をすべて解消したダイヤ
フラム弁を提供することにある。An object of the present invention is to provide a diaphragm valve that eliminates all of the above problems.

問題点を解決するための手段 この発明によるダイヤフラム弁は、弁箱と弁蓋との間に
両者の間を遮断するように周縁部を固定されたダイヤフ
ラムと、弁蓋内にはめ入れられたダイレフラム押えと、
ダイヤフラム押えを上下動させる弁棒とからなり、弁箱
には流体通路が設けられるとともに、流体通路の途中に
ダイヤフラムの中央部を密着させるようにせきが設けら
れているダイヤフラム弁において、ダイヤフラムの上面
にその中央部とともに移動するようにダイヤフラム押え
が連結されていることを特徴とするものである。Means for Solving the Problems A diaphragm valve according to the present invention includes a diaphragm whose peripheral portion is fixed between a valve box and a valve cover so as to block the gap between the two, and a diaphragm fitted into the valve cover. Presser foot and
In a diaphragm valve, which consists of a valve stem that moves a diaphragm holder up and down, a fluid passage is provided in the valve box, and a weir is provided in the middle of the fluid passage so as to bring the center of the diaphragm into close contact with the upper surface of the diaphragm. The device is characterized in that a diaphragm presser is connected to the diaphragm so as to move together with the central portion of the diaphragm.

実　　施　　例 ダイヤフラム弁は、弁箱（１）と弁蓋（２）との間に両
者の間を遮断するように周縁部を固定されたダイヤフラ
ム（３）と、弁蓋（２）内にはめ入れられたダイヤフラ
ム押え（４）と、ダイヤフラム押え（４）を上下動させ
る弁棒（５）とからなる。Example A diaphragm valve includes a diaphragm (3) whose peripheral edge is fixed between a valve box (1) and a valve cover (2) so as to block the gap between the two, and a diaphragm (3) that is fitted into the valve cover (2). It consists of a diaphragm holder (4) inserted and a valve rod (5) that moves the diaphragm holder (4) up and down.

弁箱（１）には流体通路（６）が設けられるとともに、
流体通路（６）の途中にダイヤフラム（３）の中央部を
密着させるようにせき（７）が設けられている。これら
の流体通路（６）とせき（７）は、弁箱（１）に２つの
有底孔（８）（９）がそれぞれ左向きおよび右向きに形
成されるとともに、両孔（８）（９）の底から２つの連
通孔（１０）（１１）が上向きにあけられることによっ
て形成されｈものである。せき（７）の頂面および両速
通孔（１０）（１１）の上端開口周縁部を含む平面より
見て円形の部分は、球状凹面に形成されてシール面（１
２）となされている。弁蓋（２）は、下端にフランジ（
１３）を有する下向きの垂直状有底筒状に形成されたも
ので、そのフランジ（１３）がボルト（１４）で弁箱（
１）の頂面に締付けられている。弁蓋（２）の内周面に
はその下端寄りに段部（１５）と、その上方にスプライ
ン（１Ｇ）とがそれぞれ形成されている。ダイヤフラム
（３）は弁箱（１〉の上記シール面（１２）の外形より
大きい外形を有する円板状に形成されており、その周縁
部が弁箱（１）の頂面と弁蓋（２）の底面に挾持される
ことによって固定されている。そして、ダイヤフラム（
３）の上面中央には円柱状凸部（１７）が一体的に設け
られている。凸部（１７）の外周面には環状溝（１８）
が形成されており、これに止め輪（１９）がはめ込まれ
ている。ダイヤフラム押え（４）は有底筒状に形成され
、その周壁外面がスプライン（１６）にはめ合わされて
いる。またその外面下端にはっば（２０）が形成されて
おり、このつば（２０）が弁蓋（２）の段部（１５）に
係合することにより、ダイヤフラム押え（４）の上限ス
トロークが規制されるようになっている。ダイヤフラム
押え（４）の下面はダイヤフラム（３）を介してシール
面（１２）にそうように球状凸面に形成されており、こ
れに凹部（２１）が形成されている。凹部（２１）は水
平方向にのびた条溝のようなもので、その開口端には一
対の内向きつば（２２）が形成されている。The valve box (1) is provided with a fluid passage (6), and
A weir (7) is provided in the middle of the fluid passageway (6) so as to bring the center portion of the diaphragm (3) into close contact. These fluid passages (6) and weirs (7) have two bottomed holes (8) and (9) formed in the valve box (1) facing left and right, respectively, and both holes (8) and (9). It is formed by opening two communicating holes (10) and (11) upward from the bottom of the hole. A circular portion when viewed from a plane including the top surface of the weir (7) and the upper end opening periphery of the double-speed passage holes (10) and (11) is formed into a spherical concave surface, and the sealing surface (1
2). The valve cover (2) has a flange (
The valve body (
1) is tightened to the top surface. A step (15) is formed near the lower end of the inner peripheral surface of the valve lid (2), and a spline (1G) is formed above the step. The diaphragm (3) is formed into a disc shape with an outer diameter larger than the outer diameter of the sealing surface (12) of the valve box (1>), and its peripheral edge meets the top surface of the valve box (1) and the valve cover (2). ) is fixed by being clamped to the bottom of the diaphragm (
3) A cylindrical convex portion (17) is integrally provided at the center of the upper surface. An annular groove (18) is provided on the outer peripheral surface of the convex portion (17).
is formed, and a retaining ring (19) is fitted into this. The diaphragm presser (4) is formed into a cylindrical shape with a bottom, and the outer surface of its peripheral wall is fitted into the spline (16). Further, a flange (20) is formed at the lower end of the outer surface, and when this flange (20) engages with the step (15) of the valve cover (2), the upper limit stroke of the diaphragm holder (4) is increased. It is becoming regulated. The lower surface of the diaphragm retainer (4) is formed into a spherical convex surface so as to be connected to the sealing surface (12) via the diaphragm (3), and a recess (21) is formed in this. The recess (21) is like a groove extending in the horizontal direction, and a pair of inward flanges (22) are formed at its open end.

そして凹部（２１）にダイヤフラム（３）の凸部（１７
）が止め輪（１９）とともにはめ入れられて止め輪（１
９）が内向きつば（２２）に係合することにより、凸部
（１７）が凹部（２１）から抜は出ないようになってい
る。さらにダイヤフラム押え（４）の内周面にはめねじ
（２３）が形成されている。弁棒（５）は弁蓋（２）の
頂壁を貫通している。弁棒（５）の弁蓋（２）内の部分
にはその下端より所要長さにわたってダイヤフラム押え
（４）のめねじ（２３）にねじ合わされたおねじ（２４
）と、そのすぐ上につば（２５）がそれぞれ形成されて
いる。一方弁棒（５）の弁蓋（２）より外に突出した部
分には弁蓋（２）の頂面との間にワッシャ（２６）を介
してハンドル（２７）がともに回転するように取付けら
れるとともに、ハンドル（２７）を上から押え付けるよ
うに袋ナツト（２８）がはめられて締付けられている。Then, the convex portion (17) of the diaphragm (3) is inserted into the concave portion (21).
) is fitted together with the retaining ring (19) and the retaining ring (1
9) engages with the inward flange (22), thereby preventing the convex portion (17) from coming out of the concave portion (21). Furthermore, a female thread (23) is formed on the inner peripheral surface of the diaphragm holder (4). The valve stem (5) passes through the top wall of the valve cap (2). The part of the valve stem (5) inside the valve cover (2) has a male thread (24) that is screwed into the female thread (23) of the diaphragm holder (4) over the required length from its lower end.
) and a collar (25) is formed immediately above it. On the other hand, a handle (27) is attached to the part of the valve stem (5) that protrudes outward from the valve cover (2) with a washer (26) interposed between it and the top surface of the valve cover (2) so that the handle (27) rotates together with the valve stem (5). At the same time, a cap nut (28) is fitted and tightened so as to press the handle (27) from above.

上記弁の各構成要素のうち、弁箱（１）、弁蓋（２）お
よびダイヤフラム（３）は四ふつ化エチレン樹脂製であ
り、ダイヤフラム押え（４）、弁棒（５）、ワッシャ（
２６）、ハンドル（２７）および袋ナツト（２８）は塩
化ビニル樹脂製であり、これによって弁の耐食性が保証
されている。Among the components of the above-mentioned valve, the valve box (1), valve cover (2), and diaphragm (3) are made of tetrafluoroethylene resin, and the diaphragm holder (4), valve stem (5), and washer (
26), the handle (27) and the cap nut (28) are made of vinyl chloride resin, which ensures the corrosion resistance of the valve.

ハンドル（２１）を正逆方向に回転さけると、これとと
もに弁棒（５）が回転し、そのおねじ（２４）とダイヤ
フラム押え（４）あめねじ（２３）とによってダイヤフ
ラム（４）が上下動する。ダイヤフラム押え（４）が降
下すると、ダイヤフラム（３）が押し下げられてせき（
ア）の頂面を含むシール面（１２）に密接し、流体通路
（６）を閉鎖する。これとは逆に、ダイヤフラム押え（
４）が上昇すると、ダイヤフラム（３）が引き上げられ
てシール面（１２）から離れ、流体通路（６）を開放す
る。When the handle (21) is rotated in the forward and reverse directions, the valve stem (5) also rotates, and the diaphragm (4) moves up and down by its male screw (24), diaphragm retainer (4), and female screw (23). do. When the diaphragm presser (4) descends, the diaphragm (3) is pushed down and the weir (
a) closes the sealing surface (12) including the top surface of the fluid passageway (6); On the contrary, the diaphragm presser foot (
4) rises, the diaphragm (3) is pulled up and away from the sealing surface (12), opening the fluid passageway (6).

発明の効果 この発明によれば、ダイヤフラムを押し下げるときは勿
論、ダイヤフラムを引き上げるときもダイヤフラム押え
によっているから、流量調節が微少かつ正確に行なうこ
とができ、しかもダイヤフラムに自己復帰性を付与する
必要がないから、その材質選択の幅が広がる。Effects of the Invention According to this invention, since the diaphragm presser is used not only when pushing down the diaphragm but also when pulling it up, the flow rate can be adjusted minutely and accurately, and it is not necessary to provide the diaphragm with self-returning properties. Since there is no such material, the range of material selection is widened.

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

図面はこの発明の実施例を示す垂直縦断面図である。 （１）・・・弁箱、（２）・・・弁蓋、（３）・・・ダ
イヤフラム、（４）・・・ダイヤフラム押え、（５）・
・・弁棒、（６）・・・流体通路、（７）・・・せき。 以　　上 外４名The drawing is a vertical longitudinal sectional view showing an embodiment of the invention. (1) Valve box, (2) Valve cover, (3) Diaphragm, (4) Diaphragm holder, (5)
... Valve stem, (6) ... Fluid passage, (7) ... Weir. 4 people other than the above

Claims (1)

【特許請求の範囲】[Claims] 弁箱（１）と弁蓋（２）との間に両者の間を遮断するよ
うに周縁部を固定されたダイヤフラム（３）と、弁蓋（
２）内にはめ入れられたダイヤフラム押え（４）と、ダ
イヤフラム押え（４）を上下動させる弁棒（５）とから
なり、弁箱（１）には流体通路（６）が設けられるとと
もに、流体通路（６）の途中にダイヤフラム（３）の中
央部を密着させるようにせき（７）が設けられているダ
イヤフラム弁において、ダイヤフラム（３）の上面にそ
の中央部とともに移動するようにダイヤフラム押え（４
）が連結されていることを特徴とするダイヤフラム弁。A diaphragm (3) whose peripheral edge is fixed between the valve box (1) and the valve cover (2) so as to block the gap between the two, and the valve cover (
2) It consists of a diaphragm holder (4) fitted inside and a valve stem (5) that moves the diaphragm holder (4) up and down, and the valve box (1) is provided with a fluid passage (6), In a diaphragm valve in which a weir (7) is provided in the middle of a fluid passageway (6) so as to bring the center of the diaphragm (3) into close contact, a diaphragm retainer is provided on the upper surface of the diaphragm (3) so as to move together with the center of the diaphragm. (4
) are connected to each other.
JP20258984A 1984-09-26 1984-09-26 Diaphragm valve Pending JPS6179077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20258984A JPS6179077A (en) 1984-09-26 1984-09-26 Diaphragm valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20258984A JPS6179077A (en) 1984-09-26 1984-09-26 Diaphragm valve

Publications (1)

Publication Number Publication Date
JPS6179077A true JPS6179077A (en) 1986-04-22

Family

ID=16459983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20258984A Pending JPS6179077A (en) 1984-09-26 1984-09-26 Diaphragm valve

Country Status (1)

Country Link
JP (1) JPS6179077A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01128078U (en) * 1988-02-26 1989-08-31
CN104595519A (en) * 2015-02-04 2015-05-06 哈尔滨工业大学 Pneumatic micro valve of stepping motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4112532Y1 (en) * 1964-04-22 1966-06-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4112532Y1 (en) * 1964-04-22 1966-06-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01128078U (en) * 1988-02-26 1989-08-31
CN104595519A (en) * 2015-02-04 2015-05-06 哈尔滨工业大学 Pneumatic micro valve of stepping motor

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