JP4232921B2

JP4232921B2 - Locking device for manually operated fluid controller and fluid controller provided with the device

Info

Publication number: JP4232921B2
Application number: JP26686998A
Authority: JP
Inventors: 純次佐藤; 和博吉川; 央欣目瀬
Original assignee: Fujikin Inc
Current assignee: Fujikin Inc
Priority date: 1998-09-21
Filing date: 1998-09-21
Publication date: 2009-03-04
Anticipated expiration: 2018-09-21
Also published as: JP2000097368A

Description

【０００１】
【発明の属する技術分野】
本発明は手動操作式流体制御器のロック装置に係り、その目的は流路の開放度合いを長時間にわたって一定に維持することができて厳密な流量コントロールが可能な手動操作式流体制御器を提供することにある。
【０００２】
【従来の技術】
従来より、ハンドルの回転操作によって流路を開閉する手動操作式の流体制御器は広く使用されており、このような手動操作式の流体制御器としては例えば図１７に示すような構造のものが挙げられる。
図１７示の流体制御器は流路を開放した状態を示しており、このように流路を開放するには、ハンドル（Ａ）を反時計周りに回転させてハンドル（Ａ）をボンネット（Ｂ）に対して上昇させ、これによりステム（Ｃ）及びコンプレッサー（Ｄ）を上昇させてダイヤフラム（Ｅ）をシール座（Ｆ）から離間させ、流路（Ｇ）を開放する。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記したような従来の手動操作式の流体制御器には以下に述べるような課題が存在した。
すなわち、流路（Ｇ）の開放度合いはハンドル（Ａ）の上昇位置によって決まるものであるが、図１７に示すような従来の手動操作式の流体制御器では、ハンドル（Ａ）を上昇させて流路（Ｇ）を開放した状態でそのまま放置すると、時間の経過に伴ってハンドル（Ａ）が徐々に下降し、これに伴って流路（Ｇ）の開放度合いが低下してしまっていた。この現象は、特に流路（Ｇ）を少しだけ開放した状態、即ちハンドル（Ａ）を中途部まで上昇させた状態で放置しておいた場合に顕著であった。
このような実情から、化学工業プラント等の厳密な流量コントロールが要求される分野においては手動操作式の流体制御器を使用することはできなかった。
そこで業界では、流路の開放度合いを長時間にわたって一定に維持することができて厳密な流量コントロールが可能な手動操作式流体制御器の創出が望まれていた。
【０００４】
【課題を解決するための手段】
本発明は上記課題を解決するためになされたものであって、請求項１に係る発明は、手動操作式流体制御器においてハンドルの上下位置を固定するためのロック装置であって、側面視逆Ｌ字状に形成され、ハンドルの根元部を内嵌可能な孔部を備えたハンドル挟持部と、該挟持部の基端部から略直角下方向に延出されたボンネット下端部への取り付け部とから構成されてなることを特徴とする手動操作式流体制御器のロック装置に関する。
請求項２に係る発明は、前記孔部に、孔部の内径を調節可能な調節機構が設けられてなることを特徴とする請求項１記載の手動操作式流体制御器のロック装置に関する。
請求項３に係る発明は、前記ハンドル挟持部の外面から孔部に達するようにネジ孔が穿設されてなるとともに、該ネジ孔にハンドル固定用ネジが螺合されてなることを特徴とする請求項１記載の手動操作式流体制御器のロック装置に関する。
【０００５】
請求項４に係る発明は、前記取り付け部が、下端部内面側に幅方向全長にわたって形成された方形状の切り欠き部であることを特徴とする請求項１乃至３記載の手動操作式流体制御器のロック装置に関する。
請求項５に係る発明は、前記取り付け部が、下端部に所定間隔を空けて互いに平行に形成された２つの突出片であることを特徴とする請求項１乃至３記載の手動操作式流体制御器のロック装置に関する。
請求項６に係る発明は、前記取り付け部が平板状とされ、ボンネット下端部の外周面から弁箱の流路が延出されていない外周面に沿うように取り付けられることを特徴とする請求項１乃至３記載の手動操作式流体制御器のロック装置に関する。
【０００６】
請求項７に係る発明は、請求項１記載のロック装置を備えてなる手動操作式流体制御器であって、前記ハンドル挟持部の孔部にハンドルの根元部が内嵌され、前記取り付け部がボンネットの下端部に取り付けられてなることを特徴とする手動操作式流体制御器に関する。
請求項８に係る発明は、前記孔部に、孔部の内径を調節可能な調節機構が設けられてなるとともに、該調節機構による孔部の縮径によってハンドルの根元部を挟持してボンネットに対するハンドルの上下位置を固定するように構成されてなることを特徴とする請求項７記載の手動操作式流体制御器に関する。
請求項９に係る発明は、前記ハンドル挟持部の外面から孔部に達するようにネジ孔が穿設されてなるとともに、該ネジ孔にハンドル固定用ネジを螺合することにより、ボンネットに対するハンドルの上下位置を固定するように構成されてなることを特徴とする請求項７記載の手動操作式流体制御器に関する。
【０００７】
請求項１０に係る発明は、ボンネットの下端部外形が方形とされてなるとともに、ロック装置の取り付け部が内面側下端部に幅方向全長にわたって形成された方形状の切り欠き部であって、該切り欠き部が前記ボンネット下端部の外周面における直線部に当接するように取り付けられてなることを特徴とする請求項７乃至９記載の手動操作式流体制御器。
請求項１１に係る発明は、ボンネットの下端部外形が円形とされ且つ外周面の所要箇所に突出部が形成されてなるとともに、ロック装置の取り付け部が下端部に所定間隔を空けて互いに平行に形成された２つの突出片であって、該２つの突出片が前記ボンネット下端部の外周面に形成された突出部を挟み込むように取り付けられてなることを特徴とする請求項７乃至９記載の手動操作式流体制御器に関する。
請求項１２に係る発明は、ロック装置の取り付け部が平板状とされるとともに、該取り付け部がボンネット下端部の外周面から弁箱の流路が延出されていない外周面に沿うように取り付けられてなることを特徴とする請求項７乃至９記載の手動操作式流体制御器に関する。
【０００８】
【発明の実施の形態】
以下、本発明に係る手動操作式流体制御器のロック装置及びこの装置を備えた流体制御器の好適な実施形態について図面に基づいて説明する。
図１は本発明に係る手動操作式流体制御器のロック装置の第一実施形態を示す側面図であり、図２はその平面図、図３はその正面図である。
本発明に係る手動操作式流体制御器のロック装置（１）は、図示の如く側面視逆Ｌ字状に形成されており、ハンドル挟持部（２）と、ハンドル挟持部（２）の基端部から略直角下方向に延出された取り付け部（３）とから構成される。
【０００９】
ハンドル挟持部（２）は、ハンドルの根元部を内嵌可能な孔部（２１）とこの孔部（２１）の内径を調節可能な調節機構（２２）とを備えている。調節機構（２２）の形態については、孔部（２１）の内径を調節可能であれば特に限定されないが、図示例ではハンドル挟持部（２）の先端を割り型とし、この割り型の一方に雌ねじ部（２ａ）を他方に貫通孔（２ｂ）をそれぞれ形成し、ボルト（２ｃ）を貫通孔（２ｂ）に挿通して雌ねじ部（２ａ）に螺合することにより、孔部（２１）の内径を調整するように構成されている。
【００１０】
取り付け部（３）はロック装置（１）を流体制御器のボンネットに取り付けるために設けられており、第一実施形態においては、図１及び図３に示す如く下端部内面側に幅方向全長にわたって形成された方形状の切り欠き部（３１）とされている。
【００１１】
図４は上記構成からなるロック装置（１）を手動操作式流体制御器（４）に取り付けた様子を示す図であり、図５はその断面図である。
ロック装置（１）の取り付けに際しては、手動操作式流体制御器（４）のハンドルを反時計周りに回転させてダイヤフラム（４４）をシール座（４５）から離間させることにより流路（４６）を所要量だけ開放し、その状態でハンドル挟持部（２）の孔部（２１）にハンドルの根元部（４１）を内嵌するとともに、切り欠き部（３１）を図示の如くボンネット（４２）の段部に当接させる。次いでボルト（２ｃ）を締め込んで孔部（２１）を縮径し、ハンドルの根元部（４１）を外周から挟持固定する。
【００１２】
図６はロック装置（１）を手動操作式流体制御器（４）に取り付けた状態において、ボンネット（４２）を弁座から取り外して裏面から見た様子を示す図であり、図示の如く、切り欠き部（３１）は幅方向全長にわたってボンネット（４２）の下端部の外周面における直線部（４２ａ）に当接するように取り付けられる。
【００１３】
図示の如く本発明に係るロック装置（１）を手動操作式流体制御器（４）に取り付けることによって、ボンネット（４２）に対するハンドルの上下位置を完全に固定することができる。従って、流路の開放度合いを長時間にわたって一定に維持することが可能となり、手動操作式流体制御器において厳密な流量コントロールが可能となる。
【００１４】
また、手動操作式流体制御器（４）においては、流路の開放を目視で確認することができるように、ハンドルの上下動によって見え隠れする部分のボンネット（４２）の表面にハンドルの色と異なる色（例えば黄色）の着色を施したインジケーター（４３）が設けられていることがあるが、本発明に係るロック装置（１）によれば図４に示す如くインジケーター（４３）が遮蔽されることがなく、ロック装置（１）を取り付けた状態においても流路の開放を目視で確認することができる。
【００１５】
図７は本発明に係る手動操作式流体制御器のロック装置の第二実施形態を示す側面図であり、図８はその平面図、図９はその正面図である。
第二実施形態に係る手動操作式流体制御器のロック装置（１）が前記第一実施形態と異なる点は、取り付け部（３）が下端部に所定間隔を空けて互いに平行に形成された２つの突出片（３２）とされていることであり、その他の構成は前記第一実施形態と同じである。
【００１６】
第二実施形態に係るロック装置（１）は、手動操作式流体制御器（４）のボンネット（４２）の下端部外形が円形である場合に使用され、この場合には手動操作式流体制御器（４）のボンネット（４２）の下端部外周面の所要箇所に突出部（４７）を形成する。
【００１７】
図１０は第二実施形態に係るロック装置（１）を手動操作式流体制御器（４）に取り付けた様子を示す断面図であり、図１１は第二実施形態に係るロック装置（１）を手動操作式流体制御器（４）に取り付けた状態において、ボンネット（４２）を弁座から取り外して裏面から見た様子を示す図である。
第二実施形態に係るロック装置（１）の取り付けに際しては、手動操作式流体制御器（４）のハンドルを反時計周りに回転させて流路（４６）を所要量だけ開放し、その状態でハンドル挟持部（２）の孔部（２１）にハンドルの根元部（４１）を内嵌するとともに、ボンネット下端部の外周面に形成された突出部（４７）を２つの突出片（３２）の間に挟み込む。次いでボルト（２ｃ）を締め込んで孔部（２１）を縮径し、ハンドルの根元部（４１）を外周から挟持固定する。
【００１８】
図示の如く、第二実施形態に係るロック装置（１）を手動操作式流体制御器（４）に取り付けることによっても、ボンネット（４２）に対するハンドルの上下位置を完全に固定することができ、従って、流路の開放度合いを長時間にわたって一定に維持することが可能となり、手動操作式流体制御器において厳密な流量コントロールが可能となる。
また、インジケーターが遮蔽されることがなく、ロック装置を取り付けた状態においても流路の開放を目視で確認することができる。
【００１９】
図１２は本発明に係る手動操作式流体制御器のロック装置の第三実施形態を示す側面図であり、図１３はその平面図、図１４はその正面図である。
第三実施形態に係る手動操作式流体制御器のロック装置（１）は、図１２示の如く側面視逆Ｌ字状に形成されており、ハンドル挟持部（２）と、ハンドル挟持部（２）の基端部から略直角下方向に延出された取り付け部（３）とから構成される。
そして、この第三実施形態においては、ハンドル挟持部（２）と取り付け部（３）とは図示の如く別部材から構成されており、２本のボルト（５）によってハンドル挟持部（２）と取り付け部（３）とが一体化されている。
【００２０】
ハンドル挟持部（２）は、ハンドルの根元部を内嵌可能な孔部（２１）と、ハンドル挟持部の外面から孔部に達するように穿設されたネジ孔（２３）と、このネジ孔（２３）に螺合されたハンドル固定用ネジ（２４）と、ネジ孔（２３）の最奥部に嵌着されたピーク樹脂等からなるパッキン（２５）とを備えている。
そして、この第三実施形態においては、取り付け部（３）は平板状とされている。
【００２１】
図１５は第三実施形態に係るロック装置（１）を手動操作式流体制御器（４）に取り付けた様子を示す一部断面正面図であり、図１６は側面図である。
第三実施形態に係るロック装置（１）は、図示の如く、ハンドル挟持部（２）の孔部（２１）にハンドルの根元部（４１）を内嵌し、取り付け部（３）をボンネット（４２）下端部の外周面から弁箱（６）の流路（４６）が延出されていない外周面に沿わすようにして手動操作式流体制御器（４）に取り付けられる。
【００２２】
そして、手動操作式流体制御器（４）のハンドルを反時計周りに回転させて流路（４６）を所要量だけ開放し、その状態でハンドル固定用ネジ（２４）を進行方向に回転させてパッキン（２５）をハンドルの根元部（４１）の外周面に対して密着させることにより、ハンドルの根元部（４１）を押圧固定する。
【００２３】
このように、第三実施形態に係るロック装置（１）を手動操作式流体制御器（４）に取り付けることによっても、ボンネット（４２）に対するハンドルの上下位置を完全に固定することができ、従って、流路の開放度合いを長時間にわたって一定に維持することが可能となり、手動操作式流体制御器において厳密な流量コントロールが可能となる。
また、インジケーターが遮蔽されることがなく、ロック装置を取り付けた状態においても流路の開放を目視で確認することができる。
【００２４】
上記した第一乃至第三実施形態に係るロック装置（１）は、後付けで手動操作式流体制御器に取り付ける構成としてもよいが、図５、図１０、図１５及び図１６に示したようなロック装置（１）が予め取り付けられた手動操作式流体制御器（４）とすることもできる。
【００２５】
この場合、第一及び第二実施形態に係るロック装置（１）が取り付けられた手動操作式流体制御器（４）においては、通常の状態ではハンドル挟持部（２）の孔部（２１）を拡径状態としてハンドルの回転操作を可能としておき、流路を所定量開放した状態で保持したいときに調節機構（２２）により孔部（２１）を縮径してハンドルの根元部（４１）を挟持固定するようにすれば、手動操作式流体制御器において厳密な流量コントロールが可能となる。
【００２６】
また、第三実施形態に係るロック装置（１）が取り付けられた手動操作式流体制御器（４）においては、通常の状態ではハンドル固定用ネジ（２４）を緩めておいてハンドルの回転操作を可能としておき、流路を所定量開放した状態で保持したいときにハンドル固定用ネジ（２４）を締めてパッキン（２５）をハンドルの根元部（４１）の外周面に対して密着させ、ハンドルの根元部（４１）を押圧固定するようにすれば、手動操作式流体制御器において厳密な流量コントロールが可能となる。
【００２７】
尚、本発明において手動操作式流体制御器の構成は図示例には限定されず、ハンドルによる手動操作で流路を開閉可能な流体制御器であれば如何なる構成のものを使用してもよい。
【００２８】
【発明の効果】
以上説明したように、本発明は、手動操作式流体制御器においてハンドルの上下位置を固定するためのロック装置であって、側面視逆Ｌ字状に形成され、ハンドルの根元部を内嵌可能な孔部を備えたハンドル挟持部と、該挟持部の基端部から略直角下方向に延出されたボンネット下端部への取り付け部とから構成されてなることを特徴とする手動操作式流体制御器のロック装置、及び、このロック装置を備えてなる手動操作式流体制御器であって、前記ハンドル挟持部の孔部にハンドルの根元部が内嵌され、前記取り付け部がボンネットの下端部に取り付けられてなることを特徴とする手動操作式流体制御器であるから、ロック装置によってボンネットに対するハンドルの上下位置を簡単な操作で完全に固定することができ、流路の開放度合いを長時間にわたって一定に維持することが可能で厳密な流量コントロールが可能な手動操作式流体制御器を得ることができる。
【図面の簡単な説明】
【図１】本発明に係る手動操作式流体制御器のロック装置の第一実施形態を示す側面図である。
【図２】本発明に係る手動操作式流体制御器のロック装置の第一実施形態を示す平面図である。
【図３】本発明に係る手動操作式流体制御器のロック装置の第一実施形態を示す正面図である。
【図４】第一実施形態に係るロック装置を手動操作式流体制御器に取り付けた様子を示す図である。
【図５】図４の断面図である。
【図６】第一実施形態に係るロック装置をロック装置を手動操作式流体制御器に取り付けた状態において、ボンネットを弁座から取り外して裏面から見た様子を示す図である。
【図７】本発明に係る手動操作式流体制御器のロック装置の第二実施形態を示す側面図である。
【図８】本発明に係る手動操作式流体制御器のロック装置の第二実施形態を示す平面図である。
【図９】本発明に係る手動操作式流体制御器のロック装置の第二実施形態を示す正面図である。
【図１０】第二実施形態に係るロック装置を手動操作式流体制御器に取り付けた様子を示す断面図である。
【図１１】第二実施形態に係るロック装置を手動操作式流体制御器に取り付けた状態において、ボンネットを弁座から取り外して裏面から見た様子を示す図である。
【図１２】本発明に係る手動操作式流体制御器のロック装置の第三実施形態を示す側面図である。
【図１３】本発明に係る手動操作式流体制御器のロック装置の第三実施形態を示す平面図である。
【図１４】本発明に係る手動操作式流体制御器のロック装置の第三実施形態を示す正面図である。
【図１５】第三実施形態に係るロック装置を手動操作式流体制御器に取り付けた様子を示す一部断面正面図である。
【図１６】第三実施形態に係るロック装置を手動操作式流体制御器に取り付けた様子を示す側面図である。
【図１７】従来の手動操作式流体制御器の一例を示す断面図である。
【符号の説明】
１ロック装置
２ハンドル挟持部
２１孔部
２２調節機構
２３ネジ孔
２４ハンドル固定用ネジ
３取り付け部
３１切り欠き部
３２突出片
４手動操作式流体制御器
４１ハンドルの根元部
４２ボンネット
４２ａ直線部
４７突出部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lock device for a manually operated fluid controller, and an object thereof is to provide a manually operated fluid controller capable of maintaining a constant degree of flow path opening over a long period of time and capable of precise flow control. There is to do.
[0002]
[Prior art]
Conventionally, a manually operated fluid controller that opens and closes a flow path by rotating a handle has been widely used. As such a manually operated fluid controller, for example, one having a structure as shown in FIG. Can be mentioned.
The fluid controller shown in FIG. 17 shows a state in which the flow path is opened. To open the flow path in this way, the handle (A) is rotated counterclockwise and the handle (A) is moved to the bonnet (B ), Thereby raising the stem (C) and the compressor (D), separating the diaphragm (E) from the seal seat (F), and opening the flow path (G).
[0003]
[Problems to be solved by the invention]
However, the conventional manual operation type fluid controller as described above has the following problems.
That is, the degree of opening of the flow path (G) is determined by the raised position of the handle (A), but in the conventional manually operated fluid controller as shown in FIG. 17, the handle (A) is raised. If the flow path (G) was left open as it was, the handle (A) gradually lowered with the passage of time, and the degree of opening of the flow path (G) was reduced accordingly. This phenomenon was particularly noticeable when the flow path (G) was opened slightly, that is, when the handle (A) was left halfway up.
Under such circumstances, a manually operated fluid controller could not be used in a field where strict flow rate control is required, such as a chemical industrial plant.
Therefore, in the industry, there has been a demand for the creation of a manually operated fluid controller capable of maintaining a constant opening degree of the flow path for a long time and capable of strict flow rate control.
[0004]
[Means for Solving the Problems]
The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is a locking device for fixing the vertical position of a handle in a manually operated fluid controller, which is reverse to the side view. A handle sandwiching portion that is formed in an L-shape and has a hole portion into which the root portion of the handle can be fitted, and an attachment portion to a lower end portion of the bonnet that extends substantially perpendicularly downward from the base end portion of the sandwiching portion And a locking device for a manually operated fluid controller.
The invention according to claim 2 relates to the lock device for a manually operated fluid controller according to claim 1, wherein the hole is provided with an adjusting mechanism capable of adjusting the inner diameter of the hole.
The invention according to claim 3 is characterized in that a screw hole is formed so as to reach the hole from the outer surface of the handle holding portion, and a handle fixing screw is screwed into the screw hole. The locking device for a manually operated fluid controller according to claim 1.
[0005]
The invention according to claim 4 is the manually operated fluid control according to any one of claims 1 to 3, wherein the mounting portion is a rectangular cutout formed on the inner surface of the lower end portion over the entire length in the width direction. The present invention relates to a device locking device.
The invention according to claim 5 is characterized in that the attachment portion is two projecting pieces formed in parallel with each other at a predetermined interval at the lower end portion. The present invention relates to a device locking device.
The invention according to claim 6 is characterized in that the attachment portion is formed in a flat plate shape and is attached along the outer peripheral surface where the flow path of the valve box is not extended from the outer peripheral surface of the lower end portion of the bonnet. The present invention relates to a lock device for a manually operated fluid controller according to any one of claims 1 to 3.
[0006]
The invention according to claim 7 is a manually operated fluid controller comprising the lock device according to claim 1, wherein a root portion of the handle is fitted in a hole of the handle holding portion, and the attachment portion is The present invention relates to a manually operated fluid controller characterized by being attached to a lower end portion of a bonnet.
According to an eighth aspect of the present invention, the hole is provided with an adjustment mechanism capable of adjusting the inner diameter of the hole, and the base of the handle is sandwiched by the reduced diameter of the hole by the adjustment mechanism to the bonnet. 8. The manually operated fluid controller according to claim 7, wherein the handle is configured to fix a vertical position of the handle.
According to the ninth aspect of the present invention, a screw hole is formed so as to reach the hole portion from the outer surface of the handle holding portion, and a handle fixing screw is screwed into the screw hole, whereby the handle of the handle with respect to the bonnet is formed. 8. The manually operated fluid controller according to claim 7, wherein the vertically operated position is fixed.
[0007]
In the invention according to claim 10, the outer shape of the lower end portion of the bonnet is rectangular, and the mounting portion of the locking device is a rectangular cutout portion formed at the inner surface side lower end portion over the entire length in the width direction, The manually operated fluid controller according to any one of claims 7 to 9, wherein the notch is attached so as to abut on a straight line portion on an outer peripheral surface of the lower end portion of the bonnet.
According to the eleventh aspect of the present invention, the outer shape of the lower end portion of the bonnet is circular and a protruding portion is formed at a required portion of the outer peripheral surface, and the mounting portion of the locking device is parallel to each other with a predetermined interval at the lower end portion. 10. The two protruding pieces formed, wherein the two protruding pieces are attached so as to sandwich the protruding portion formed on the outer peripheral surface of the lower end portion of the bonnet. The present invention relates to a manually operated fluid controller.
The invention according to claim 12 is such that the mounting portion of the locking device is formed in a flat plate shape, and the mounting portion is mounted along the outer peripheral surface where the flow path of the valve box does not extend from the outer peripheral surface of the bonnet lower end portion. 10. The manually operated fluid controller according to claim 7, wherein the manually operated fluid controller is provided.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a manually operated fluid controller locking device and a fluid controller including the device according to the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a first embodiment of a locking device for a manually operated fluid controller according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a front view thereof.
A lock device (1) for a manually operated fluid controller according to the present invention is formed in an inverted L shape in a side view as shown in the figure, and includes a handle clamping portion (2) and a proximal end of the handle clamping portion (2). It is comprised from the attachment part (3) extended in the substantially perpendicular | vertical downward direction from the part.
[0009]
The handle holding portion (2) includes a hole portion (21) into which the root portion of the handle can be fitted, and an adjustment mechanism (22) capable of adjusting the inner diameter of the hole portion (21). The form of the adjustment mechanism (22) is not particularly limited as long as the inner diameter of the hole (21) can be adjusted, but in the illustrated example, the tip of the handle holding part (2) is a split mold, and one of the split molds is provided. A through hole (2b) is formed on the other side of the female screw part (2a), and a bolt (2c) is inserted into the through hole (2b) and screwed into the female screw part (2a). The inner diameter is adjusted.
[0010]
The attachment portion (3) is provided to attach the lock device (1) to the bonnet of the fluid controller. In the first embodiment, as shown in FIGS. The formed rectangular notch (31) is formed.
[0011]
FIG. 4 is a view showing a state in which the lock device (1) having the above configuration is attached to the manually operated fluid controller (4), and FIG. 5 is a sectional view thereof.
When attaching the locking device (1), the handle (46) is moved away from the seal seat (45) by rotating the handle of the manually operated fluid controller (4) counterclockwise to separate the diaphragm (44). Only the required amount is opened, and in this state, the base portion (41) of the handle is fitted into the hole (21) of the handle holding portion (2), and the notch (31) is formed on the bonnet (42) as shown in the figure. Contact the step. Next, the bolt (2c) is tightened to reduce the diameter of the hole (21), and the base (41) of the handle is clamped and fixed from the outer periphery.
[0012]
FIG. 6 is a view showing a state in which the bonnet (42) is removed from the valve seat and viewed from the back side when the lock device (1) is attached to the manually operated fluid controller (4). The notch (31) is attached so as to abut on the straight portion (42a) on the outer peripheral surface of the lower end of the bonnet (42) over the entire length in the width direction.
[0013]
As shown in the drawing, the vertical position of the handle relative to the bonnet (42) can be completely fixed by attaching the locking device (1) according to the present invention to the manually operated fluid controller (4). Accordingly, the degree of opening of the flow path can be maintained constant over a long period of time, and strict flow rate control can be performed in the manually operated fluid controller.
[0014]
Further, in the manually operated fluid controller (4), the color of the handle differs from the color of the handle on the surface of the bonnet (42) that is visible and hidden by the vertical movement of the handle so that the opening of the flow path can be visually confirmed. An indicator (43) colored in color (for example, yellow) may be provided, but according to the locking device (1) according to the present invention, the indicator (43) is shielded as shown in FIG. Even when the locking device (1) is attached, it is possible to visually confirm the opening of the flow path.
[0015]
FIG. 7 is a side view showing a second embodiment of the lock device for a manually operated fluid controller according to the present invention, FIG. 8 is a plan view thereof, and FIG. 9 is a front view thereof.
The locking device (1) for the manually operated fluid controller according to the second embodiment is different from the first embodiment in that the mounting portion (3) is formed in parallel to each other with a predetermined interval at the lower end. The other configuration is the same as that of the first embodiment.
[0016]
The locking device (1) according to the second embodiment is used when the outer shape of the lower end portion of the bonnet (42) of the manually operated fluid controller (4) is circular. In this case, the manually operated fluid controller A protrusion (47) is formed at a required location on the outer peripheral surface of the lower end of the bonnet (42) of (4).
[0017]
FIG. 10 is a sectional view showing a state in which the locking device (1) according to the second embodiment is attached to the manually operated fluid controller (4), and FIG. 11 shows the locking device (1) according to the second embodiment. It is a figure which shows a mode that the bonnet (42) was removed from the valve seat and was seen from the back surface in the state attached to the manual operation type fluid controller (4).
When attaching the locking device (1) according to the second embodiment, the handle (46) of the manually operated fluid controller (4) is rotated counterclockwise to open the flow path (46) by a required amount. The base (41) of the handle is fitted into the hole (21) of the handle holding part (2), and the protrusion (47) formed on the outer peripheral surface of the lower end of the bonnet is connected to the two protrusions (32). Put in between. Next, the bolt (2c) is tightened to reduce the diameter of the hole (21), and the base (41) of the handle is clamped and fixed from the outer periphery.
[0018]
As shown in the figure, the vertical position of the handle relative to the bonnet (42) can also be completely fixed by attaching the locking device (1) according to the second embodiment to the manually operated fluid controller (4). The opening degree of the flow path can be kept constant over a long period of time, and strict flow rate control is possible in the manually operated fluid controller.
Further, the indicator is not shielded, and the opening of the flow path can be visually confirmed even when the lock device is attached.
[0019]
12 is a side view showing a third embodiment of the locking device for a manually operated fluid controller according to the present invention, FIG. 13 is a plan view thereof, and FIG. 14 is a front view thereof.
As shown in FIG. 12, the lock device (1) for the manually operated fluid controller according to the third embodiment is formed in an inverted L shape when viewed from the side, and includes a handle clamping portion (2) and a handle clamping portion (2 ) And a mounting portion (3) extending substantially downward at a right angle.
In the third embodiment, the handle holding portion (2) and the attachment portion (3) are formed of different members as shown in the drawing, and the handle holding portion (2) is connected by two bolts (5). The attachment part (3) is integrated.
[0020]
The handle holding portion (2) includes a hole portion (21) into which the base portion of the handle can be fitted, a screw hole (23) drilled so as to reach the hole portion from the outer surface of the handle holding portion, and the screw hole. A handle fixing screw (24) screwed into (23) and a packing (25) made of a peak resin or the like fitted in the innermost part of the screw hole (23) are provided.
And in this 3rd embodiment, the attaching part (3) is made into flat form.
[0021]
FIG. 15 is a partial cross-sectional front view showing a state where the locking device (1) according to the third embodiment is attached to the manually operated fluid controller (4), and FIG. 16 is a side view.
As shown in the drawing, the locking device (1) according to the third embodiment has a base portion (41) of the handle fitted in the hole (21) of the handle holding portion (2), and the mounting portion (3) is connected to the bonnet ( 42) The valve box (6) is attached to the manually-operated fluid controller (4) so as to extend along the outer peripheral surface where the flow path (46) of the valve box (6) does not extend from the outer peripheral surface of the lower end.
[0022]
Then, the handle of the manually operated fluid controller (4) is rotated counterclockwise to open the flow path (46) by a required amount, and in this state, the handle fixing screw (24) is rotated in the advancing direction. The base (41) of the handle is pressed and fixed by bringing the packing (25) into close contact with the outer peripheral surface of the base (41) of the handle.
[0023]
Thus, by attaching the locking device (1) according to the third embodiment to the manually operated fluid controller (4), the vertical position of the handle relative to the bonnet (42) can be completely fixed, and accordingly The opening degree of the flow path can be kept constant over a long period of time, and strict flow rate control is possible in the manually operated fluid controller.
Further, the indicator is not shielded, and the opening of the flow path can be visually confirmed even when the lock device is attached.
[0024]
The locking device (1) according to the first to third embodiments described above may be configured to be attached to a manually operated fluid controller as a retrofit, as shown in FIGS. 5, 10, 15, and 16. It can also be a manually operated fluid controller (4) with a locking device (1) attached in advance.
[0025]
In this case, in the manually-operated fluid controller (4) to which the locking device (1) according to the first and second embodiments is attached, the hole (21) of the handle holding part (2) is formed in a normal state. The handle can be rotated in an expanded state, and when it is desired to hold the flow path in a predetermined amount, the hole (21) is reduced in diameter by the adjusting mechanism (22), so that the base (41) of the handle is removed. If sandwiched and fixed, precise flow rate control is possible in a manually operated fluid controller.
[0026]
In the manual operation type fluid controller (4) to which the lock device (1) according to the third embodiment is attached, the handle fixing screw (24) is loosened in a normal state to rotate the handle. When it is desired to hold the flow path in a predetermined amount, the handle fixing screw (24) is tightened so that the packing (25) is brought into close contact with the outer peripheral surface of the root portion (41) of the handle. If the root portion (41) is pressed and fixed, the flow rate can be strictly controlled in the manually operated fluid controller.
[0027]
In the present invention, the configuration of the manually operated fluid controller is not limited to the illustrated example, and any configuration may be used as long as it is a fluid controller capable of opening and closing the flow path by manual operation with a handle.
[0028]
【The invention's effect】
As described above, the present invention is a locking device for fixing the vertical position of a handle in a manually-operated fluid controller, which is formed in an inverted L shape in side view and can be fitted into the root of the handle. A manually-operated fluid comprising: a handle holding portion having a simple hole portion; and a mounting portion attached to a lower end portion of a bonnet extending substantially downward from the base end portion of the holding portion. A lock device for a controller, and a manually operated fluid controller including the lock device, wherein a base portion of the handle is fitted in a hole of the handle holding portion, and the attachment portion is a lower end portion of a bonnet Since it is a manually operated fluid controller, the vertical position of the handle relative to the bonnet can be completely fixed with a simple operation by the locking device, and the degree of opening of the flow path is Can be obtained constant can be maintained and strict flow control is possible is manually operated fluid controller for a long time.
[Brief description of the drawings]
FIG. 1 is a side view showing a first embodiment of a lock device for a manually operated fluid controller according to the present invention.
FIG. 2 is a plan view showing a first embodiment of a locking device for a manually operated fluid controller according to the present invention.
FIG. 3 is a front view showing a first embodiment of a lock device for a manually operated fluid controller according to the present invention.
FIG. 4 is a view showing a state in which the locking device according to the first embodiment is attached to a manually operated fluid controller.
FIG. 5 is a cross-sectional view of FIG.
FIG. 6 is a view showing a state where the bonnet is removed from the valve seat and viewed from the back surface in a state where the locking device according to the first embodiment is attached to the manually operated fluid controller.
FIG. 7 is a side view showing a second embodiment of the lock device for a manually operated fluid controller according to the present invention.
FIG. 8 is a plan view showing a second embodiment of the lock device for a manually operated fluid controller according to the present invention.
FIG. 9 is a front view showing a second embodiment of the lock device for a manually operated fluid controller according to the present invention.
FIG. 10 is a cross-sectional view showing a state in which the locking device according to the second embodiment is attached to a manually operated fluid controller.
FIG. 11 is a view showing a state in which the bonnet is removed from the valve seat and viewed from the back surface in a state where the locking device according to the second embodiment is attached to the manually operated fluid controller.
FIG. 12 is a side view showing a third embodiment of the lock device for a manually operated fluid controller according to the present invention.
FIG. 13 is a plan view showing a third embodiment of the lock device for a manually operated fluid controller according to the present invention.
FIG. 14 is a front view showing a third embodiment of the lock device for a manually operated fluid controller according to the present invention.
FIG. 15 is a partial cross-sectional front view showing a state where the locking device according to the third embodiment is attached to a manually operated fluid controller.
FIG. 16 is a side view showing a state in which the lock device according to the third embodiment is attached to a manually operated fluid controller.
FIG. 17 is a cross-sectional view showing an example of a conventional manually operated fluid controller.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Locking device 2 Handle clamping part 21 Hole part 22 Adjustment mechanism 23 Screw hole 24 Handle fixing screw 3 Attachment part 31 Notch part 32 Projection piece 4 Manually operated fluid controller 41 Root part 42 of handle 42 Bonnet 42a Linear part 47 Projection Part

Claims

A locking device for fixing the vertical position of a handle in a manually operated fluid controller, which is formed in an inverted L shape in a side view and includes a handle holding portion having a hole portion into which a root portion of the handle can be fitted. And a locking device for a manually operated fluid controller, characterized in that the locking device comprises a mounting portion attached to a lower end portion of a bonnet extending substantially downward from the base end portion of the clamping portion.

2. The lock device for a manually operated fluid controller according to claim 1, wherein the hole is provided with an adjustment mechanism capable of adjusting an inner diameter of the hole.

2. A manually operated system according to claim 1, wherein a screw hole is formed so as to reach the hole portion from an outer surface of the handle holding portion, and a handle fixing screw is screwed into the screw hole. Locking device for fluid controller.

4. The lock device for a manually operated fluid controller according to claim 1, wherein the attachment portion is a rectangular cutout portion formed on the inner surface side of the lower end portion over the entire length in the width direction.

4. The locking device for a manually operated fluid controller according to claim 1, wherein the mounting portion is two projecting pieces formed in parallel to each other at a predetermined interval at a lower end portion.

4. The manual operation type according to claim 1, wherein the attachment portion is formed in a flat plate shape, and is attached along the outer peripheral surface where the flow path of the valve box is not extended from the outer peripheral surface of the lower end portion of the bonnet. Locking device for fluid controller.

A manually operated fluid controller comprising the locking device according to claim 1, wherein a root portion of a handle is fitted in a hole portion of the handle holding portion, and the attachment portion is attached to a lower end portion of a bonnet. A manually operated fluid controller characterized by comprising:

The hole is provided with an adjustment mechanism capable of adjusting the inner diameter of the hole, and the vertical position of the handle with respect to the bonnet is fixed by sandwiching the root of the handle by the diameter of the hole by the adjustment mechanism. 8. The manually operated fluid controller according to claim 7, wherein the manually operated fluid controller is configured as follows.

A screw hole is formed so as to reach the hole from the outer surface of the handle clamping part, and a handle fixing screw is screwed into the screw hole to fix the vertical position of the handle with respect to the bonnet. The manually operated fluid controller according to claim 7, wherein:

The outer shape of the lower end portion of the bonnet is rectangular, and the mounting portion of the locking device is a rectangular notch portion formed on the inner surface side lower end portion over the entire length in the width direction, and the notch portion is the bonnet lower end portion. 10. The manually operated fluid controller according to claim 7, wherein the manually operated fluid controller is attached so as to be in contact with a linear portion on an outer peripheral surface of the fluid.

The outer shape of the lower end of the bonnet is circular, and a protruding portion is formed at a required position on the outer peripheral surface, and the mounting portion of the locking device is formed by two protruding pieces formed parallel to each other at a predetermined interval at the lower end portion. 10. The manually operated fluid controller according to claim 7, wherein the two protruding pieces are attached so as to sandwich a protruding portion formed on an outer peripheral surface of the lower end portion of the bonnet.

The mounting portion of the locking device is formed in a flat plate shape, and the mounting portion is mounted along the outer peripheral surface where the flow path of the valve box is not extended from the outer peripheral surface of the bonnet lower end portion. The manually operated fluid controller according to any one of claims 7 to 9.