JP3826338B2 - Valve opening / closing lever device - Google Patents

Valve opening / closing lever device Download PDF

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Publication number
JP3826338B2
JP3826338B2 JP14996399A JP14996399A JP3826338B2 JP 3826338 B2 JP3826338 B2 JP 3826338B2 JP 14996399 A JP14996399 A JP 14996399A JP 14996399 A JP14996399 A JP 14996399A JP 3826338 B2 JP3826338 B2 JP 3826338B2
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JP
Japan
Prior art keywords
valve
handle
lever
locking plate
lever device
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.)
Expired - Lifetime
Application number
JP14996399A
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Japanese (ja)
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JP2000337547A (en
Inventor
富男 和田
昭宏 釈迦郡
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.)
Asahi Yukizai Corp
Original Assignee
Asahi Organic Chemicals Industry Co Ltd
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Filing date
Publication date
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Priority to JP14996399A priority Critical patent/JP3826338B2/en
Publication of JP2000337547A publication Critical patent/JP2000337547A/en
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Publication of JP3826338B2 publication Critical patent/JP3826338B2/en
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  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、化学工場、上下水道、農業・水産などの配管ラインに好適に使用される弁の開閉レバー装置に関するもので、さらに詳しくは微細な開度設定が可能で耐腐食性に優れ、外力を受けても破損しにくい弁の開閉レバー装置に関するものである。
【0002】
【従来の技術】
従来、バタフライバルブ等に使用されている弁の開閉レバー装置は図11、12に示されているものが代表的であった。図11、12に基づいて説明すると、ステム26上部に固定状に装着されたハンドル27を90度の範囲で回動操作させることにより流路を開閉させる弁の開閉レバー装置は、該弁のトップフランジ28に固定された取付台29に固着された金属製ロッキングプレート30の外周部に設けられた歯形31に係合される爪部32を有する金属製レバー33が、ハンドル27に軸支されたものであって、該爪部32は1本のものが一般的であった。さらに、ロッキングプレート30の歯形31の歯先34及びレバー33の爪部32の爪先35の平面及び断面形状は矩形状を有していた。
【0003】
【発明が解決しようとする課題】
しかしながら、前記構造を有する弁の開閉レバー装置では、レバー33の爪部32は1本であり、常に弁の開閉レバー装置の強度維持のため幅の広い爪部32が必要であった。それに伴い、ロッキングプレート30の歯形31の数も制限されることとなり、弁の開度設定も7段階程度までで、それ以上の微細な開度設定ができなかった。しかも、レバー33及びロッキングプレート30が金属製のため、腐食性の強い薬液を流す化学工場などの配管で使用する場合は、薬液や雰囲気中にレバー33及びロッキングプレート30が侵され弁の開閉レバー操作による弁の開度設定が不能になるという問題が生じていた。さらに、歯形31及び爪部32の先端部が平面及び断面形状ともに矩形状をしている為、ハンドル27に異常な外力が加わった時には、ロッキングプレート30の歯形31の歯先34及びレバー33の爪部32の爪先35が破損し、弁の開閉レバー操作による弁の開度設定が不能になる虞れがあった。
【0004】
本発明は以上のような従来技術の問題点に鑑みなされたもので、その目的は、弁の微細な開度設定が可能で耐腐食性に優れ、外力を受けても前記爪部や歯形が破損しにくい弁の開閉レバー装置を提供することである。
【0005】
【課題を解決するための手段】
本発明は以上のような従来技術の問題点に鑑みなされたもので、ステム上部に固定状に装着されたハンドルを90度の範囲で回動操作させることにより流路を開閉させる弁の開閉レバー装置において、該弁の本体上部に設けられたトップフランジに固着され、扇形状に設けられたなだらかな山形をした複数の歯形を有し、且つ上面に該弁の開度表示用目盛が設けられたロッキングプレートと、ハンドルに上下動自在に軸支され、且つハンドル軸支部より後方でバネにてハンドルと弾発係合されており、一方、該軸支部より前方の端部には該ロッキングプレートに設けられた歯形と係合する少なくとも山の爪部が各々の山の頂部を結ぶ線が凹弧状になるように形成され設けられたレバーとからなり、前記ロッキングプレートの歯形の下端部を歯先に向ってなだらかな曲面状に形成されるとともに、前記レバーの爪部の上端部は先端に向ってなだらかな曲面状に形成されていることを第1の特徴とするものである。
【0006】
また、前記ロッキングプレートの歯形が、約120度の扇形状に設けられると共に、その高さhが4〜5mm、谷間の角度αが38〜42度に設けられたことを第2の特徴とし、さらにレバー及びロッキングプレートが合成樹脂製であることを第3の特徴とするものである。
【0007】
本発明の弁の開閉レバー装置はボールバルブやバタフライバルブなどに好適に使用されるが、使用されるバルブは特に限定されない。また、ロッキングプレート及びレバーの材質は、PPG、PVC、PP、PVDFなどの合成樹脂が好適なものとして挙げられるが、強度、耐腐食性上問題ないものであれば特に限定されない。
【0008】
また、本発明における弁の開閉レバー装置におけるバネとしてはスプリング、板バネ、板ゴムなどが好適に使用されるが、バネに類するものであれば特に限定されない。さらには、耐食性を有する金属あるいは樹脂被覆された金属製のものを使用するのが良い。
【0009】
【発明の実施の形態】
以下、本発明の実施態様について図面を参照して説明するが、本発明が本実施態様に限定されないことは言うまでもない。
図1は本発明のPPG製の弁の開閉レバー装置がつけられたバタフライバルブの一部断面を含む正面図である。図2はロッキングプレートの平面図である。図3はロッキングプレートの歯形の拡大図である。図4は図2のA−A線断面図であり、図5は図4の要部拡大図である。図6は図1のバルブ本体を除いた部分の平面図である。図7はレバーの平面図である。図8は図7のB−B線断面図であり、図9は図8の要部拡大図である。図10は、図6の底面図である。
【0010】
図において1は中央部に設けられた軸孔2にステム24を貫通させた状態で、口径40mm〜200mmのバタフライバルブ本体25の上部に設けられたトップフランジ26に固定されている略円形状をしたPPG製のロッキングプレートである。図2に示すごとく、周面には軸孔2を中心として約120度の範囲にわたって扇形状になだらかな山の形をした歯形3が24山連設され、連設された歯形3の両端部分には周面から突出して平面矩形状のストッパー部4が設けられている。尚、歯形3の山数は所望する開度数に応じて自由に設定できるものである。歯形3の高さ及び角度は、図3に示すごとく、歯形3の高さhを4〜5mm、角度αを38〜42度に設けると、開度設定及び強度上良い効果が得られる。また、歯形3の下端部5は歯先に向かってなだらかな曲面状に形成されている。言い換えると歯形3全体が丸みを帯びた形状になっている(図4、図5参照)。ロッキングプレート1の中心部にはステム貫通用の軸孔2が設けられ、その周辺部には軸孔2を中心にして、対称位置にロッキングプレート固定用のネジ孔6が4箇所設けられている。また、連設された歯形3の軸孔2を中心とした対称位置の外周部上面には約90度の範囲にわたって、弁の開度表示用目盛7が設けられている。
【0011】
8は断面逆U字状に設けられたPP製のハンドルであり、前方に設けられたステム挿入孔9にステム24が嵌挿されボルトなどでステム24に固定されている。ハンドル8の軸方向中央部より後方にはピン挿入孔10が横方向に穿孔されており、ピン11を挿入することにより後記レバー16を軸支する軸支部12となっている。軸支部12の後方内部上面には、バネ13を嵌合固定させるための凹部14が設けられている。また、ハンドル8の外側先端中央部には前記弁の開度表示用目盛7を指して弁の開度を示す指針15が一体的に突設されている(図6参照)。
【0012】
16はPPG製のレバーで、図7、8に示すごとく、その略中央に位置する部分にピン挿入孔17が横穿されており、前記ハンドル8の軸支部12にピンを挿入することによりハンドル8に軸支される。ピン挿入孔17のやや後方に位置する上面の、前記ハンドル8の内側に設けられた凹部14と相対する部位には、バネ13を嵌合固定させるための凸部18が設けられており、ハンドル8の凹部14とレバー凸部18に各々バネ13の両側を嵌合固定させることで、レバー16がハンドル8と弾発係合される。これにより、レバー16はハンドル8に上下動自在に軸支されることとなる。
前記凸部18のさらに後方には弁の開閉の施錠用ロック孔19がレバー16の横方向に穿孔されており、この施錠用ロック孔19に南京錠(図示せず)を掛けることにより、レバー16が上下動するのを防止する。すなわち、何らかの外力により自然にレバーが動いてしまい開度が勝手に変わるのを防止できるようにされている。20はレバー16の先端部に設けられたなだらかな山の形をした爪部で、各々の山の頂部を結ぶ線が凹弧状になるように7山連設されると共に、爪部20の上端部21は先端に向かってなだらかな曲面状に形成されている。言い換えると爪部20全体が丸みを帯びた形状にされている。爪部20の数は少なくとも2山設ければ良く、好適には5から7山設けるのが良い。ロッキングプレート1の歯形3と爪部20とを係合させることにより所望する開度で弁を固定することができる。
【0013】
以下に本実施態様の作動を説明する。
まず、ハンドル8の把持部22及びレバー16の把持部23をバネ13の付勢力に抗して把持すると、レバー16のハンドル8の軸支部12より前方部が下降し、ロッキングプレート8の歯形3に係合されていたレバー16の爪部20が離反する。次に、この状態でハンドル8及びレバー16を所望する弁の設定開度まで回動させ、レバー16を解放すると、ハンドル8及びレバー16の後方に嵌合されたバネ13の弾発により、レバー16の前方部が上動して爪部20がロッキングプレート1の歯形3に係合され、弁が固定される。この時の開度設定は弁の全閉から全開まで19段階の微細な開度設定が可能である。
【0014】
【発明の効果】
本発明弁の開閉レバー装置は以上のような構成からなっており、これを利用することにより、以下の優れた効果が得られる。
(1)弁の微細な開度設定ができるようになり、回転弁での微細な流量設定が可能になる。
(2)ハンドルに異常な力が加わった時にもレバーの爪部およびロッキングプレートの歯部の破損が起こらず、弁の開度設定が不能になることがなく、常に弁の開度設定が保持できる
(3)腐食性の強い薬液を流す化学工場などの配管で使用でき、流体、雰囲気中に侵されることなく常に弁の開度設定が保持でき流量設定が変わることがない。
【図面の簡単な説明】
【図1】本発明のPPG製の弁の開閉レバー装置がつけられたバタフライバルブの一部断面を含む正面図である。
【図2】ロッキングプレートの平面図である。
【図3】ロッキングプレートの歯形の拡大図である。
【図4】図2のA−A線断面図である。
【図5】図4の要部拡大図である。
【図6】図1のバルブ本体を除いた部分の平面図である。
【図7】レバーの平面図である。
【図8】図7のB−B線断面図である。
【図9】図8の要部拡大図である。
【図10】図6の底面図である。
【図11】従来の弁の開閉レバー装置の底面図である。
【図12】図11のC−C線断面図である。
【符号の説明】
1…ロッキングプレート
2…軸孔
3…歯形
4…ストッパー
5…歯形の下端部
6…ネジ孔
7…開度表示用目盛
8…ハンドル
9…ステム挿入孔
10、17…ピン挿入孔
11…ピン
12…軸支部
13…バネ
14…凹部
15…指針
16…レバー
18…凸部
19…施錠用ロック孔
20…爪部
21…歯形の上端部
22、23…把持部
24…ステム
25…バタフライバルブ
26…トップフランジ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a valve opening / closing lever device that is preferably used in piping lines for chemical factories, water and sewage, agriculture and fisheries, and more specifically, fine opening can be set, corrosion resistance is excellent, and external force The present invention relates to an open / close lever device for a valve that is not easily damaged even if it is subjected to heat.
[0002]
[Prior art]
Conventionally, a valve opening / closing lever device used in a butterfly valve or the like has been representatively shown in FIGS. 11 and 12, a valve opening / closing lever device that opens and closes a flow path by rotating a handle 27 fixedly mounted on the upper portion of the stem 26 in a range of 90 degrees is provided on the top of the valve. A metal lever 33 having a claw portion 32 engaged with a tooth profile 31 provided on an outer peripheral portion of a metal locking plate 30 fixed to a mounting base 29 fixed to the flange 28 is pivotally supported by the handle 27. The nail part 32 is generally one. Furthermore, the plane and cross-sectional shape of the tooth tip 34 of the tooth profile 31 of the locking plate 30 and the tip of the claw portion 32 of the lever 33 were rectangular.
[0003]
[Problems to be solved by the invention]
However, in the valve opening / closing lever device having the above-described structure, the lever 33 has only one claw portion 32, and a wide claw portion 32 is always required to maintain the strength of the valve opening / closing lever device. Along with this, the number of tooth profiles 31 of the locking plate 30 is also limited, and the opening degree of the valve can be set up to about seven stages, and a further fine opening degree cannot be set. Moreover, since the lever 33 and the locking plate 30 are made of metal, when used in piping such as a chemical factory where a highly corrosive chemical solution flows, the lever 33 and the locking plate 30 are attacked in the chemical solution or atmosphere, and the valve opening / closing lever There has been a problem that the opening degree of the valve cannot be set by operation. Furthermore, since the tooth profile 31 and the tip of the claw portion 32 are rectangular in both plan and cross-sectional shape, when an abnormal external force is applied to the handle 27, the tooth tip 34 of the tooth profile 31 of the locking plate 30 and the lever 33 There is a possibility that the toe 35 of the claw portion 32 is damaged and the opening degree of the valve cannot be set by operating the valve opening / closing lever.
[0004]
The present invention has been made in view of the above-described problems of the prior art, and its purpose is to enable fine opening of the valve, excellent corrosion resistance, and the claw portion and tooth profile even when subjected to external force. An object of the present invention is to provide a valve opening / closing lever device which is not easily damaged.
[0005]
[Means for Solving the Problems]
The present invention has been made in view of the above-described problems of the prior art, and is a valve opening / closing lever that opens and closes a flow path by rotating a handle fixedly attached to the upper portion of the stem within a range of 90 degrees. In the apparatus, the valve is fixed to a top flange provided at the upper part of the main body of the valve, has a plurality of gentle chevron-shaped teeth provided in a fan shape, and an opening indication scale for the valve is provided on the upper surface. The locking plate is pivotally supported by the handle so as to be movable up and down, and is elastically engaged with the handle by a spring behind the handle shaft support portion. consists of a line claw portion of the at least three mountains are connecting the top of each pile is provided is formed so as to be concave arc-shaped lever which tooth engages provided in the lower end portion of the tooth profile of the locking plate Is formed in a gently curved toward the first, upper end portions of the claw portions of the lever is to the first, characterized in that it is formed on the gently curved toward the tip.
[0006]
The second feature is that the tooth shape of the locking plate is provided in a fan shape of about 120 degrees, the height h is 4 to 5 mm, and the angle α of the valley is 38 to 42 degrees , Furthermore , the third feature is that the lever and the locking plate are made of synthetic resin.
[0007]
The valve opening / closing lever device of the present invention is suitably used for a ball valve, a butterfly valve, etc., but the valve used is not particularly limited. The material of the locking plate and lever is preferably a synthetic resin such as PPG, PVC, PP, or PVDF, but is not particularly limited as long as there is no problem in strength and corrosion resistance.
[0008]
Further, as the spring in the valve opening / closing lever device of the present invention, a spring, a leaf spring, a leaf rubber or the like is preferably used, but it is not particularly limited as long as it is similar to a spring. Furthermore, it is preferable to use a metal having corrosion resistance or a metal coated with a resin.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, it goes without saying that the present invention is not limited to the embodiments.
FIG. 1 is a front view including a partial cross section of a butterfly valve equipped with a PPG valve opening / closing lever device of the present invention. FIG. 2 is a plan view of the locking plate. FIG. 3 is an enlarged view of the tooth profile of the locking plate. 4 is a cross-sectional view taken along the line AA of FIG. 2, and FIG. 5 is an enlarged view of a main part of FIG. 6 is a plan view of a portion excluding the valve body of FIG. FIG. 7 is a plan view of the lever. 8 is a cross-sectional view taken along the line BB in FIG. 7, and FIG. 9 is an enlarged view of a main part of FIG. FIG. 10 is a bottom view of FIG.
[0010]
In the figure, reference numeral 1 denotes a substantially circular shape fixed to a top flange 26 provided at the upper part of a butterfly valve main body 25 having a diameter of 40 mm to 200 mm in a state where a stem 24 is passed through a shaft hole 2 provided in a central portion. This is a PPG locking plate. As shown in FIG. 2, 24 tooth forms 3 each having a gentle mountain shape in a fan shape are provided on the peripheral surface over a range of about 120 degrees with the shaft hole 2 as the center, and both end portions of the tooth form 3 provided continuously. Is provided with a flat rectangular stopper 4 protruding from the peripheral surface. In addition, the number of crests of the tooth profile 3 can be freely set according to the desired number of opening degrees. As shown in FIG. 3, when the height h of the tooth profile 3 is set to 4 to 5 mm and the angle α is set to 38 to 42 degrees, as shown in FIG. Further, the lower end portion 5 of the tooth profile 3 is formed in a gently curved shape toward the tooth tip. In other words, the entire tooth profile 3 has a rounded shape (see FIGS. 4 and 5). A shaft hole 2 for penetrating the stem is provided at the center of the locking plate 1, and four screw holes 6 for fixing the locking plate are provided at symmetrical positions around the shaft hole 2 at the periphery thereof. . In addition, a valve opening indication scale 7 is provided over a range of about 90 degrees on the upper surface of the outer peripheral portion of the symmetrical position with the shaft hole 2 of the tooth profile 3 provided continuously.
[0011]
Reference numeral 8 denotes a PP handle provided in an inverted U-shaped cross section. A stem 24 is fitted into a stem insertion hole 9 provided at the front, and is fixed to the stem 24 with a bolt or the like. A pin insertion hole 10 is perforated in the lateral direction behind the axial center of the handle 8 and serves as a shaft support 12 for supporting a lever 16 described later by inserting the pin 11. A recess 14 for fitting and fixing the spring 13 is provided on the rear inner upper surface of the shaft support 12. Further, a pointer 15 indicating the opening degree of the valve by pointing to the opening degree scale 7 of the valve is integrally projected at the center of the outer tip of the handle 8 (see FIG. 6).
[0012]
Reference numeral 16 denotes a PPG lever. As shown in FIGS. 7 and 8, a pin insertion hole 17 is horizontally bored at a substantially central portion of the lever, and the handle is obtained by inserting the pin into the shaft support portion 12 of the handle 8. 8 is pivotally supported. A convex portion 18 for fitting and fixing the spring 13 is provided on a portion of the upper surface located slightly rearward of the pin insertion hole 17 and facing the concave portion 14 provided inside the handle 8. The lever 16 is elastically engaged with the handle 8 by fitting and fixing both sides of the spring 13 to the concave portion 14 and the lever convex portion 18 respectively. As a result, the lever 16 is pivotally supported by the handle 8 so as to be movable up and down.
A locking lock hole 19 for opening and closing the valve is drilled in the lateral direction of the lever 16 further behind the convex portion 18, and a padlock (not shown) is hooked on the locking lock hole 19 so that the lever 16 Prevents vertical movement. That is, it is possible to prevent the lever from moving naturally by some external force and changing the opening degree. Reference numeral 20 denotes a gentle claw-shaped claw provided at the tip of the lever 16, and seven crests are continuously arranged so that the line connecting the crests of each crest is a concave arc shape. The part 21 is formed in a gently curved shape toward the tip. In other words, the entire claw portion 20 has a rounded shape. The number of claw portions 20 may be at least two, and preferably five to seven. By engaging the tooth profile 3 of the locking plate 1 and the claw portion 20, the valve can be fixed at a desired opening degree.
[0013]
The operation of this embodiment will be described below.
First, when the gripping portion 22 of the handle 8 and the gripping portion 23 of the lever 16 are gripped against the biasing force of the spring 13, the front portion is lowered from the shaft support portion 12 of the handle 8 of the lever 16, and the tooth profile 3 of the locking plate 8. The claw portion 20 of the lever 16 that has been engaged with is separated. Next, in this state, when the handle 8 and the lever 16 are rotated to the desired opening of the valve and the lever 16 is released, the spring 13 fitted to the rear of the handle 8 and the lever 16 repels the lever. The front portion of 16 is moved upward, the claw portion 20 is engaged with the tooth profile 3 of the locking plate 1, and the valve is fixed. At this time, the opening degree can be set in 19 steps from the fully closed to the fully opened state of the valve.
[0014]
【The invention's effect】
The opening / closing lever device of the valve of the present invention has the above-described configuration, and the following excellent effects can be obtained by using this device.
(1) A fine opening degree of the valve can be set, and a fine flow rate can be set in the rotary valve.
(2) Even when an abnormal force is applied to the handle, the claw part of the lever and the teeth of the locking plate do not break, the valve opening cannot be set, and the valve opening is always maintained. Yes (3) It can be used in piping such as chemical factories where a highly corrosive chemical solution flows, and the valve opening can always be maintained without being affected by the fluid or atmosphere, and the flow rate setting will not change.
[Brief description of the drawings]
FIG. 1 is a front view including a partial cross-section of a butterfly valve equipped with a PPG valve opening / closing lever device of the present invention.
FIG. 2 is a plan view of a locking plate.
FIG. 3 is an enlarged view of a tooth profile of a locking plate.
4 is a cross-sectional view taken along line AA in FIG.
FIG. 5 is an enlarged view of a main part of FIG.
6 is a plan view of a portion excluding the valve main body of FIG. 1. FIG.
FIG. 7 is a plan view of the lever.
8 is a cross-sectional view taken along line BB in FIG.
9 is an enlarged view of a main part of FIG.
10 is a bottom view of FIG. 6. FIG.
FIG. 11 is a bottom view of a conventional valve opening / closing lever device.
12 is a cross-sectional view taken along line CC in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Locking plate 2 ... Shaft hole 3 ... Tooth profile 4 ... Stopper 5 ... Lower end part 6 of a tooth profile ... Screw hole 7 ... Opening indication scale 8 ... Handle 9 ... Stem insertion hole 10, 17 ... Pin insertion hole 11 ... Pin 12 ... shaft support part 13 ... spring 14 ... concave part 15 ... pointer 16 ... lever 18 ... convex part 19 ... locking lock hole 20 ... claw part 21 ... upper end parts 22 and 23 of the tooth profile ... stem 25 ... butterfly valve 26 ... Top flange

Claims (3)

ステム上部に固定状に装着されたハンドルを90度の範囲で回動操作させることにより流路を開閉させる弁の開閉レバー装置において、該弁の本体上部に設けられたトップフランジに固着され、扇形状に設けられたなだらかな山形をした複数の歯形を有し、且つ上面に該弁の開度表示用目盛が設けられたロッキングプレートと、ハンドルに上下動自在に軸支され、且つハンドル軸支部より後方でバネにてハンドルと弾発係合されており、一方、該軸支部より前方の端部には該ロッキングプレートに設けられた歯形と係合する少なくとも山の爪部が設けられ各々の山の頂部を結ぶ線が凹弧状になるように形成されたレバーとからなり、前記ロッキングプレートの歯形の下端部を歯先に向ってなだらかな曲面状に形成されるとともに、前記レバーの爪部の上端部は先端に向ってなだらかな曲面状に形成されていることを特徴とする弁の開閉レバー装置。In a valve opening / closing lever device that opens and closes a flow path by rotating a handle fixedly attached to the upper part of the stem within a range of 90 degrees, the handle is fixed to a top flange provided on the upper part of the valve body. A rocking plate having a plurality of gently chevron-shaped tooth shapes provided on the shape and provided with a scale for indicating the opening of the valve on the upper surface, and a handle shaft support portion that is supported by the handle so as to be movable up and down. It is elastically engaged with the handle by a spring at the rear, while at least three claw portions that engage with a tooth profile provided on the locking plate are provided at the front portion of the shaft support portion, respectively. the line connecting the top of the mountain consists of a lever which is formed so as to concave arc shape is formed in a gently curved lower end portion of the tooth profile of the locking plate towards the tooth tip, said lever Upper end opening lever device of the valve, characterized in that formed on the gently curved toward the distal end of the claw portion. 前記ロッキングプレートの歯形が、約120度の扇形状に設けられると共に、その高さhが4〜5mm、谷間の角度αが38〜42度に設けられたことを特徴とする請求項1記載の弁の開閉レバー装置。 The tooth shape of the locking plate is provided in a fan shape of about 120 degrees, the height h is 4-5 mm, and the angle α between the valleys is 38-42 degrees . Valve opening and closing lever device. レバー及びロッキングプレートが合成樹脂製であることを特徴とする請求項1又は請求項2記載の弁の開閉レバー装置。3. The valve opening / closing lever device according to claim 1, wherein the lever and the locking plate are made of synthetic resin.
JP14996399A 1999-05-28 1999-05-28 Valve opening / closing lever device Expired - Lifetime JP3826338B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP14996399A JP3826338B2 (en) 1999-05-28 1999-05-28 Valve opening / closing lever device

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JP3826338B2 true JP3826338B2 (en) 2006-09-27

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Publication number Priority date Publication date Assignee Title
US20060186367A1 (en) * 2003-04-10 2006-08-24 Asahi Organic Chemicals Industry Co., Ltd Butterfly valve
KR100729866B1 (en) 2007-02-26 2007-06-19 주식회사 정도기계 Valve switching machine of butterfly valve
JP5252654B2 (en) * 2009-07-14 2013-07-31 株式会社キッツ Manual operation device for valve drive
CN104482288A (en) * 2014-12-19 2015-04-01 天津银河阀门有限公司 Nodal wood type simple-locking dial for manual butterfly valve regulating handle
EP3514428A1 (en) * 2018-01-18 2019-07-24 Georg Fischer Rohrleitungssysteme AG Hand lever
JP1617073S (en) 2018-02-16 2018-11-05
JP1617076S (en) 2018-02-16 2018-11-05

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