JPH0324951Y2 - - Google Patents
Info
- Publication number
- JPH0324951Y2 JPH0324951Y2 JP1981077371U JP7737181U JPH0324951Y2 JP H0324951 Y2 JPH0324951 Y2 JP H0324951Y2 JP 1981077371 U JP1981077371 U JP 1981077371U JP 7737181 U JP7737181 U JP 7737181U JP H0324951 Y2 JPH0324951 Y2 JP H0324951Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- air
- piston
- cylinder
- rotary valve
- 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
Links
- 239000012530 fluid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Landscapes
- Fluid-Driven Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Description
【考案の詳細な説明】
(1) 考案の目的
（産業上の利用分野）
この考案はバタフライ弁など回転弁の駆動装置
に関するものである。[Detailed explanation of the invention] (1) Purpose of the invention (field of industrial application) This invention relates to a drive device for rotary valves such as butterfly valves.
（従来技術と解決すべき課題）
バタフライ弁などの回転弁を駆動する手段とし
て、該弁の弁軸の弁外突出部をエアシリンダのピ
ストンロツドと連結し、該シリンダ内のピストン
の両側にエアを出入させてピストン、したがつて
これに固定したピストンロツドを変位させ、これ
に連結した弁軸を回動させるように構成した周知
の弁駆動手段は、駆動流体がエアであるために、
漏洩によつて周辺各部を汚染することがなく、駆
動流体たるエアの補給も容易であるなどの利点が
あるが、反面、エアは圧縮性が大であるので、弁
軸の回動、したがつて弁の開閉を精密に制御する
ことが困難であり、また、被処理流体の圧力によ
つては、エア圧によつては制御困難となるような
場合が生ずるので、使用範囲が低速低圧の流体に
限定されざるを得なかつた。(Prior art and problems to be solved) As a means for driving a rotary valve such as a butterfly valve, the external protrusion of the valve shaft of the valve is connected to the piston rod of an air cylinder, and air is supplied to both sides of the piston in the cylinder. The well-known valve driving means configured to move the piston in and out to displace the piston, and therefore the piston rod fixed thereto, and rotate the valve shaft connected thereto, uses air as the driving fluid.
It has the advantage of not contaminating surrounding parts due to leakage, and it is easy to replenish air, which is the driving fluid.However, on the other hand, air is highly compressible, so it may cause rotation of the valve stem. Therefore, it is difficult to precisely control the opening and closing of the valve, and depending on the pressure of the fluid to be treated, it may be difficult to control using air pressure, so the range of use is low speed and low pressure. It had no choice but to be limited to fluids.
このような事態に対処すべく、たとえば、(a)特
開昭48−10475号公報、(b)特公昭51−40215号公
報、(c)実公昭38−8198号公報、さらに、(d)特開昭
49−57272号公報、(e)実開昭54−177492号公報な
どに示すように、駆動流体としてオイルのような
液体を用いるシリンダを共用して、上記のような
エア駆動による欠点を回避するものが幾多提案さ
れて、それぞれ一定の効果をあげている。 In order to deal with this situation, for example, (a) Japanese Patent Publication No. 10475/1982, (b) Japanese Patent Publication No. 40215/1982, (c) Publication No. 8198/1983, and (d) Tokukai Akira
As shown in Publications No. 49-57272 and (e) Japanese Utility Model Application No. 177492/1989, the above-mentioned disadvantages of air drive are avoided by sharing a cylinder that uses a liquid such as oil as the driving fluid. Many things have been proposed, each with some degree of effectiveness.
しかしながら、上記文献、、はいずれ
も、エアシリンダのピストンロツドと、共用され
る液圧シリンダのピストンロツドとを同一軸線上
に配置することを前提するもので、両シリンダ部
分を含む駆動部が大型にならざるを得ないか、な
いしは両シリンダ部が一体不可分で分離不能であ
るために、コンパクト化は到底不可能大型になら
ざるを得ず、設置場所も制限されざるを得ないの
が実情であつた。 However, both of the above documents assume that the piston rod of the air cylinder and the piston rod of the shared hydraulic cylinder are arranged on the same axis, and the drive unit including both cylinder parts becomes large. The reality is that it is impossible to make it compact, and that it has no choice but to be large, and the installation location is also limited. .
さらに上記のように全体として長大となること
を回避すべく提案されたものとして、前記文献
、などのようなものがあるが、これらのもの
は、いずれもエアシリンダとオイルシリンダの連
結にレバーなどの中間の支持部材手段が必要で、
連結手段が複雑となり、装置のコンパクト化、コ
ストダウンの観点からは著しく不十分と言わざる
を得ず、またよく知られているように、レバー、
スコツチヨークないしはこれに類する部材を介し
て、運動の伝達を行なうものは、そのストローク
の中央部分のトルクが小さくなり、全ストローク
にわたつて均一なトルクを得ることが不可能で、
最小トルク部分で必要なトルクを得なければなら
ないので、エネルギーロスを免れず、小さなスト
ロークで動かす場合以外は実用的でない。 Furthermore, there are some proposals such as the above-mentioned document to avoid the overall length as described above, but all of these proposals include levers and other devices for connecting the air cylinder and oil cylinder. intermediate support member means are required;
The connection means becomes complicated, and it must be said that it is extremely insufficient from the viewpoint of making the device more compact and reducing costs.As is well known, levers,
If motion is transmitted through a Scotch yoke or similar member, the torque at the center of the stroke will be small, making it impossible to obtain uniform torque over the entire stroke.
Since the required torque must be obtained at the minimum torque portion, energy loss is inevitable, making it impractical except when moving with small strokes.
本考案はこのような事態に対処すべくなされた
ものであつて、回転弁をエアシリンダによつて駆
動する駆動装置において、その作動の制御を行な
うために共用する液圧シリンダ部分を単体構成と
して、その構成を可及的に小型化するとともに、
両シリンダ部分の連結を極めて簡単にして、この
種のエア駆動弁の利用範囲の拡大を可能とするこ
とを目的とするものである。 The present invention was developed in order to cope with such a situation.In a drive device in which a rotary valve is driven by an air cylinder, the hydraulic cylinder part that is shared in order to control the operation of the rotary valve is made into a single unit. , while miniaturizing its configuration as much as possible,
The purpose of this invention is to make it extremely easy to connect both cylinder parts, thereby making it possible to expand the scope of use of this type of air-driven valve.
(2) 考案の構成
（課題を解決する技術手段、その作用）
上記の目的を達成するため、本考案は、往復動
する２個のピストンを内装する液圧シリンダの各
ピストンの外側のピストン駆動用スペースに、流
量制御用のニードル弁を備えた開口部を有する突
部を夫々配設し、これら両突部を、電磁弁をそな
えた導管によつて連結し、前記両ピストンを接続
するピストンロツドに形成したラツクと噛合する
ピニオンを、エアで回転弁を駆動するエアシリン
ダの、回転弁を駆動するための弁軸端に接続して
なることを特徴とする回転弁の駆動装置である。(2) Structure of the invention (technical means for solving the problem, and its effects) In order to achieve the above-mentioned purpose, the invention uses a piston drive system for the outer piston of each piston of a hydraulic cylinder containing two reciprocating pistons. A piston rod is provided in which the two pistons are connected by a conduit having an electromagnetic valve, and a piston rod that connects the two pistons. This rotary valve driving device is characterized in that a pinion that meshes with a rack formed in the rotary valve is connected to the end of a valve shaft for driving the rotary valve of an air cylinder that drives the rotary valve with air.
このように構成することによつて、液圧シリン
ダを、エアを駆動源とする種々な回転弁駆動装置
に容易に挿脱して使用できるとともに、液圧シリ
ンダに要するオイルも極めて少量ですみ、速度制
御も正確で安定したトルクで駆動できるととも
に、任意の位置で確実に停止させることが可能と
なる。 With this configuration, the hydraulic cylinder can be easily inserted into and removed from various rotary valve drive devices that use air as a driving source, and the hydraulic cylinder requires an extremely small amount of oil, allowing for speed reduction. It is also possible to drive with accurate and stable torque control, and it is also possible to reliably stop at any position.
（実施例の説明）
第１図は本考案による定速装置の断面図であつ
て、シリンダ１内には、ピストンロツド３によつ
て連結されたピストン２１、２２が配設してあ
り、該シリンダ１のほぼ中央膨隆部１１内にはピ
ニオン４が内装されており、これが前記ピストン
ロツド３のラツク３１に噛合している。(Description of Embodiments) FIG. 1 is a sectional view of a constant speed device according to the present invention, in which pistons 21 and 22 connected by a piston rod 3 are disposed in a cylinder 1. A pinion 4 is housed within the approximately central bulge 11 of the piston rod 1 and meshes with the rack 31 of the piston rod 3.
前記ピニオン４には膨隆部１１から突出して不
図示の回転弁の弁軸に連結されるものとする。 The pinion 4 protrudes from the bulge 11 and is connected to a valve shaft of a rotary valve (not shown).
前記シリンダ１の両端には突部６、７が形成し
てあり、これら突部には、シリンダ１内のオイル
の流量を制御するニードル弁６１、７１が配設し
てあり、これらの弁は導管Ｌ１、Ｌ２により、電
磁弁８を介して接続されている。 Projections 6 and 7 are formed at both ends of the cylinder 1, and needle valves 61 and 71 for controlling the flow rate of oil in the cylinder 1 are disposed on these projections. They are connected via a solenoid valve 8 by conduits L1 and L2.
第２図は上記の装置１０を公知の弁駆動装置に
適用したところを模式的に示してものである。 FIG. 2 schematically shows the above device 10 applied to a known valve drive device.
空気源Ｒからエアが電磁弁SLを介して、弁駆
動シリンダＣのシリンダ両側スペースに選択的に
供給されてピストンを変位させて弁Ｂを回動開閉
するものとする。 It is assumed that air is selectively supplied from an air source R to spaces on both sides of the valve drive cylinder C via a solenoid valve SL, displacing the piston and rotating the valve B to open and close it.
このような公知の駆動装置において、前記定速
装置１０の軸５の外部突出部（不図示）を、前記
駆動装置Ｃのピストンロツドと弁軸と同様の仕方
で該ピストンロツドに接続する。 In such a known drive, an external projection (not shown) of the shaft 5 of the constant speed device 10 is connected to the piston rod in a similar manner to the piston rod and valve stem of the drive C.
このように構成することによつて、エアによつ
てシリンダＣ内のピストンを変位させると、これ
が定速装置１０側の液圧手段によつて制御される
ことになるので、主たるシリンダＣの作動を司ど
るエアの特性による、全閉から前開まで速度を一
定にできないという前述のような不都合を解消す
ることができる。 With this configuration, when the piston in the cylinder C is displaced by air, this is controlled by the hydraulic pressure means on the constant speed device 10 side, so that the operation of the main cylinder C is controlled. This solves the above-mentioned problem of not being able to maintain a constant speed from fully closed to forwardly opened due to the characteristics of the air that governs the opening.
また、電磁弁８を不作動とすることによつて、
シリンダＣ内のピストンを、実質的にオイルの作
用で強固に停止できるので、弁が、被制御流体側
からの影響で不安定となることを阻止して、弁を
任意の位置で強固に固定することが可能であり、
さらに、ニードル弁の調整によつて容易に弁の開
閉速度を制御することもできる。 Moreover, by making the solenoid valve 8 inoperative,
The piston in cylinder C can be firmly stopped by the action of oil, preventing the valve from becoming unstable due to influence from the controlled fluid side, and firmly fixing the valve in any position. It is possible to
Furthermore, the opening and closing speed of the valve can be easily controlled by adjusting the needle valve.
(3) 考案の効果
本考案は以上説明した構成をそなえているか
ら、エアを駆動源とする回転弁の駆動装置に本考
案の装置を付帯させることによつて、該回転弁の
開閉制御を定速で行なうことができるとともに、
微細に開閉制御が可能であり、周知の回転弁駆動
装置の弁軸部分に直接着脱できるので伝達効率が
よく、取り付け方向にも制限がなく、さらに、オ
イル作動の構成部分は、エア駆動シリンダ部分の
大きさに無関係で弁の回転開閉に要するストロー
クだけをかせげばよいので、オイルの量が少量で
すむために、きわめて小型コンパクトに構成で
き、この種の回転弁の使用可能範囲を大幅に拡大
出来るとともに、コストダウンに資するところが
極めて大きい。(3) Effects of the invention Since the invention has the configuration described above, by attaching the device of the invention to a drive device for a rotary valve that uses air as a driving source, it is possible to control the opening and closing of the rotary valve. It can be carried out at a constant speed, and
Fine opening/closing control is possible, and since it can be directly attached to and detached from the valve shaft of a well-known rotary valve drive device, transmission efficiency is good, and there are no restrictions on the mounting direction.Furthermore, the oil-operated component parts are air-driven cylinder parts. Regardless of the size of the rotary valve, only the stroke required to open and close the valve is required, so only a small amount of oil is required, so it can be configured extremely small and compact, and the usable range of this type of rotary valve can be greatly expanded. , it greatly contributes to cost reduction.
第１図は本考案による定速装置の断面図、第２
図は本考案を公知の駆動装置に適用したところを
示す説明図である。
１……シリンダ、２１、２２……ピストン、３
……ピストンロツド、４……ピニオン、５……
軸、６、７……突部、３１……ラツク、６１、７
１……ニードル弁。
Figure 1 is a sectional view of the constant speed device according to the present invention, Figure 2 is a sectional view of the constant speed device according to the present invention;
The figure is an explanatory view showing the application of the present invention to a known drive device. 1...Cylinder, 21, 22...Piston, 3
...Piston rod, 4...Pinion, 5...
Shaft, 6, 7... Protrusion, 31... Rack, 61, 7
1...Needle valve.
Claims (1)
ンダの各ピストンの外側のピストン駆動用スペー
スに、流量制御用のニードル弁を備えた開口部を
有する突部を配設し、これら両突部を、電磁弁を
そなえた導管によつて連結し、前記両ピストンを
接続するピストンロツドに形成したラツクと噛合
するピニオンを、エアで回転弁を駆動するエアシ
リンダの、回転弁を駆動するための弁軸端に接続
してなる回転弁の駆動装置。 A protrusion having an opening equipped with a needle valve for flow rate control is disposed in the piston driving space outside each piston of a hydraulic cylinder containing two reciprocating pistons, and both protrusions are connected to each other. , a valve shaft for driving the rotary valve of an air cylinder that is connected by a conduit equipped with a solenoid valve, and that drives the rotary valve with air, and a pinion that meshes with a rack formed on the piston rod that connects the two pistons. A rotary valve drive device connected to the end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981077371U JPH0324951Y2 (en) | 1981-05-29 | 1981-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981077371U JPH0324951Y2 (en) | 1981-05-29 | 1981-05-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57190179U JPS57190179U (en) | 1982-12-02 |
| JPH0324951Y2 true JPH0324951Y2 (en) | 1991-05-30 |
Family
ID=29873027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981077371U Expired JPH0324951Y2 (en) | 1981-05-29 | 1981-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324951Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5140215A (en) * | 1974-10-01 | 1976-04-03 | Oki Electric Ind Co Ltd | Ribon matahasono ruijibutsuno hantenkiko |
-
1981
- 1981-05-29 JP JP1981077371U patent/JPH0324951Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5140215A (en) * | 1974-10-01 | 1976-04-03 | Oki Electric Ind Co Ltd | Ribon matahasono ruijibutsuno hantenkiko |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57190179U (en) | 1982-12-02 |
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