JPH0636368Y2 - Diaphragm type quick exhaust valve with variable throttle - Google Patents
Diaphragm type quick exhaust valve with variable throttleInfo
- Publication number
- JPH0636368Y2 JPH0636368Y2 JP2604890U JP2604890U JPH0636368Y2 JP H0636368 Y2 JPH0636368 Y2 JP H0636368Y2 JP 2604890 U JP2604890 U JP 2604890U JP 2604890 U JP2604890 U JP 2604890U JP H0636368 Y2 JPH0636368 Y2 JP H0636368Y2
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- valve
- opening
- valve seat
- port
- 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
Links
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Description
【考案の詳細な説明】 [産業上の利用分野] 本考案は、可変絞りを有するダイヤフラム形急速排気弁
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a diaphragm type quick exhaust valve having a variable throttle.
[従来の技術] 空気圧シリンダ等の流体圧アクチュエータは、切換弁と
流体回路を介して圧力室に圧縮空気等の圧力流体を給排
することによって駆動される。[Prior Art] A fluid pressure actuator such as a pneumatic cylinder is driven by supplying and discharging a pressure fluid such as compressed air to a pressure chamber through a switching valve and a fluid circuit.
この場合、切換弁が小形でかつ切換弁と圧力室間の配管
が細いと、圧縮空気の排出に時間がかかってアクチュエ
ータの速度が遅くなり、切換弁が大形でかつ配管が太い
と、アクチュエータの速度は速くなるが切換弁や流体回
路のコストが高くなるという問題がある。In this case, if the switching valve is small and the piping between the switching valve and the pressure chamber is thin, it takes time to discharge the compressed air and the actuator speed slows down.If the switching valve is large and the piping is thick, the actuator However, there is a problem that the cost of the switching valve and the fluid circuit increases.
この問題を解決するために、アクチュエータの空気を急
速排気弁によって排出することが考えられるが、急速排
気弁の排気能力が小さい場合はアクチュエータの速度増
加が小さく、排気能力が必要以上に大きい場合は圧力室
の空気の断熱膨張によって結露を生じ、これが錆の発
生、シールリングの膨潤、潤滑不良等の原因になってア
クチュエータが動作不良になることがある。In order to solve this problem, it is conceivable to discharge the air of the actuator by the quick exhaust valve, but if the exhaust capacity of the quick exhaust valve is small, the speed increase of the actuator is small, and if the exhaust capacity is larger than necessary, The adiabatic expansion of air in the pressure chamber causes dew condensation, which may cause rust, swelling of the seal ring, poor lubrication, etc., resulting in malfunction of the actuator.
これらの問題は、圧力室の容積に応じた適切な排気能力
を有する急速排気弁の使用によって解決することができ
るが、圧力室の容積は流体圧アクチュエータ毎に相違す
るため、多種の容積の圧力室に応じた適切な排気能力を
有する急速排気弁を使用することは、部品点数が多くな
ってコスト高になるばかりでなく、在庫管理も面倒であ
る。These problems can be solved by using a quick exhaust valve having an appropriate exhaust capacity according to the volume of the pressure chamber, but since the volume of the pressure chamber is different for each fluid pressure actuator, the pressure of various volumes can be reduced. Using a quick exhaust valve having an appropriate exhaust capacity according to the room not only increases the number of parts and costs, but also inventory management is troublesome.
本考案の考案者らは、先に上記問題を解決した急速排気
弁を、平成2年2月20日付けの出願において提案した。The inventors of the present invention have previously proposed a rapid exhaust valve that solves the above problems in an application dated February 20, 1990.
上記既提案の急速排気弁は、1種類の弁によって、圧力
室の容積変化に応じた適切な排気能力を得ることができ
るが、部品点数が多いために組付けが面倒である。The previously proposed rapid exhaust valve can obtain an appropriate exhaust capacity according to the volume change of the pressure chamber by one type of valve, but it is troublesome to assemble because of the large number of parts.
[考案が解決しようとする課題] 本考案が解決しようとする課題は、構成が簡単で、かつ
流体圧アクチュエータの圧力室の容積変化に応じた適切
な排気能力が得られる急速排気弁を提供することにあ
る。[Problem to be Solved by the Invention] The problem to be solved by the present invention is to provide a quick exhaust valve having a simple structure and capable of obtaining an appropriate exhaust capacity according to a volume change of a pressure chamber of a fluid pressure actuator. Especially.
[課題を解決するための手段] 上記課題を解決するため、本考案の可変絞り付きダイヤ
フラム形急速排気弁は、圧力流体の入口ポート、出口ポ
ート及び排出ポートと、上記出口ポートと入口ポート及
び排出ポートとを連通させる供給流路及び排出流路と、
対向させて配設したこれらの流路中の供給弁座及び排出
弁座と、これらの弁座を開閉する弁体とを備えた急速排
気弁において、上記弁体を、圧力流体を通過させるため
の開口を有するダイヤフラムによって構成し、上記弁座
の一方を上記開口の径よりも大径の内径を有する環状
に、他方を開口の径よりも大径に形成し、上記排出流路
の排出弁座より下流側に、排出流路を絞るためのニード
ルを、絞り開度調節可能に設けたことを特徴としてい
る。[Means for Solving the Problems] In order to solve the above problems, a diaphragm type quick exhaust valve with a variable throttle according to the present invention includes a pressure fluid inlet port, an outlet port and a discharge port, and an outlet port, an inlet port and a discharge port. A supply flow path and a discharge flow path that communicate with the port,
In a rapid exhaust valve provided with a supply valve seat and a discharge valve seat in these flow passages arranged opposite to each other, and a valve body for opening and closing these valve seats, in order to allow the pressure fluid to pass through the valve body. Of the valve seat, one of the valve seats is formed in an annular shape having an inner diameter larger than the diameter of the opening, and the other is formed in a larger diameter than the diameter of the opening. It is characterized in that a needle for narrowing the discharge flow passage is provided downstream of the seat so that the throttle opening can be adjusted.
[作用] 入口ポートに圧力流体を供給すると、ダイヤフラムが変
位して供給弁座を開放するとともに排出弁座を閉鎖する
ので、圧力流体がダイヤフラムの開口を通って出口ポー
トから流出する。[Operation] When pressure fluid is supplied to the inlet port, the diaphragm is displaced to open the supply valve seat and close the discharge valve seat, so that the pressure fluid flows out from the outlet port through the opening of the diaphragm.
この場合、両弁座の径が開口の径よりも大きいので、開
口があってもダイヤフラムが確実に排出弁座を閉鎖し、
またニードルを排出流路の排出弁座より下流側に設けた
ので、供給流路を通る圧力流体が絞られることはない。In this case, since the diameter of both valve seats is larger than the diameter of the opening, the diaphragm surely closes the discharge valve seat even if there is an opening,
Moreover, since the needle is provided on the downstream side of the discharge valve seat of the discharge channel, the pressure fluid passing through the supply channel is not throttled.
入口ポートの流体圧が低下すると、出口ポートの流体圧
によりダイヤフラムが反対方向に変位して、供給弁座を
閉鎖するとともに排出弁座を開放するので、出口ポート
の流体が排出ポートから急速に排出される。When the fluid pressure at the inlet port drops, the fluid pressure at the outlet port causes the diaphragm to move in the opposite direction, closing the supply valve seat and opening the discharge valve seat, so the fluid at the outlet port is rapidly discharged from the discharge port. To be done.
この場合も、開口による供給弁座の閉鎖に支障はなく、
ニードルによって排出流路の絞り開度を調節して排気能
力を調整できるので、1種類の急速排気弁によって、流
体圧アクチュエータの圧力室の容積に応じた適切な排気
能力を得ることができる。Also in this case, there is no problem in closing the supply valve seat by the opening,
Since the exhaust capacity can be adjusted by adjusting the throttle opening degree of the discharge passage with the needle, one kind of quick exhaust valve can obtain an appropriate exhaust capacity according to the volume of the pressure chamber of the fluid pressure actuator.
また、対向させて配設した供給弁座と排出弁座間にダイ
ヤフラムを、排出流路中にニードルを設けただけの簡単
な構成のため、部品点数が少なくて組付けが簡単であ
る。Further, since the diaphragm is provided between the supply valve seat and the discharge valve seat arranged facing each other, and the needle is provided in the discharge passage, the number of parts is small and the assembly is easy.
[実施例] 図面は本考案の実施例を示し、この可変絞り付きダイヤ
フラム形急速排気弁は、弁本体1と、該弁本体1に適宜
の手段によって取付けられたアダプタ2と、弁本体1と
アダプタ2間に周縁が挾持されたダイヤフラム3と、後
記ニードル4とを備えている。[Embodiment] The drawings show an embodiment of the present invention. This diaphragm type quick exhaust valve with a variable throttle includes a valve body 1, an adapter 2 attached to the valve body 1 by appropriate means, a valve body 1 A diaphragm 3 whose peripheral edge is held between the adapters 2 and a needle 4 described later are provided.
上記弁本体1は、圧力流体の出口ポート6と排出ポート
7、これらのポートを連通させる排出流路8中の排出弁
座9、及び排出流路6の排出弁座9より下流側の縮径部
10を備え、アダプタ2は、上記ポート6,7より小径の圧
力流体の入口ポート12、ポート12と6を連通させる供給
流路13中の供給弁座14を備え、アダプタ2が弁本体1に
取付けられると、弁座9と14が対向し、入口ポート12と
出口ポート6が略同一軸線位置にある。The valve body 1 includes a pressure fluid outlet port 6 and a discharge port 7, a discharge valve seat 9 in a discharge flow passage 8 connecting these ports, and a diameter reduction of the discharge flow passage 6 downstream of the discharge valve seat 9. Department
The adapter 2 includes a pressure fluid inlet port 12 having a smaller diameter than the ports 6 and 7, and a supply valve seat 14 in a supply flow path 13 that connects the ports 12 and 6 to each other. When installed, the valve seats 9 and 14 face each other and the inlet port 12 and the outlet port 6 are in substantially the same axial position.
上記ダイヤフラム3は、中心に開口3aを有し、供給弁座
14は内径が開口3aよりも大径の環状に、排出弁座9は開
口3aよりも大径に形成されている。しかしながら、排出
弁座9を開口3aより大径の内径を有する環状に、供給弁
座14を開口3aより大径に形成してもよい。The diaphragm 3 has an opening 3a at the center, and a supply valve seat
14 is formed in an annular shape having an inner diameter larger than the opening 3a, and the discharge valve seat 9 is formed larger in diameter than the opening 3a. However, the discharge valve seat 9 may be formed in an annular shape having an inner diameter larger than the opening 3a, and the supply valve seat 14 may be formed in a larger diameter than the opening 3a.
弁本体1は、縮径部10と対向する位置にナット16が固定
され、ねじ部分をナット16に螺着させたニードル4は一
端が縮径部10に対向し、ナット16外のねじ部にロックナ
ット17が螺着され、他端にハンドル18が取付けられてい
る。したがって、ハンドル18を回転してニードル4を縮
径部10に接近させると排出流路8が絞られ、ハンドル18
を反対方向に回転すると排出流路8の絞り開度が増加
し、ニードル4の位置はロックナット17によって固定さ
れる。In the valve body 1, a nut 16 is fixed at a position facing the reduced diameter portion 10, and a needle 4 having a threaded portion screwed onto the nut 16 has one end facing the reduced diameter portion 10 and a threaded portion outside the nut 16. A lock nut 17 is screwed on and a handle 18 is attached to the other end. Therefore, when the handle 18 is rotated to bring the needle 4 closer to the reduced diameter portion 10, the discharge flow path 8 is narrowed and the handle 18
When is rotated in the opposite direction, the throttle opening degree of the discharge passage 8 is increased, and the position of the needle 4 is fixed by the lock nut 17.
上記入口ポート12は、チューブ等の配管20と切換弁21と
によって圧縮空気源に接続され、出口ポート6はチュー
ブ等の配管22によって、流体圧アクチュエータの一例で
ある空気圧シリンダ23の圧力室23aに接続され、排出ポ
ート7は、直接または図示を省略している配管によって
大気に開口している。The inlet port 12 is connected to a compressed air source by a pipe 20 such as a tube and a switching valve 21, and the outlet port 6 is connected by a pipe 22 such as a tube to a pressure chamber 23a of a pneumatic cylinder 23 which is an example of a fluid pressure actuator. The exhaust port 7 is connected and is open to the atmosphere either directly or by piping not shown.
また、入口ポート12と出口ポート6には、それぞれチュ
ーブを挿入すると、チャック26先端の複数の係止爪がチ
ューブに係止するとともにシール部材27がチューブの外
壁をシールし、リリースブッシュ28を押入すると、係止
爪によるチューブの係止が解除されてチューブを引抜く
ことができる、いわゆるワンタッチ管継手25,25が装着
されており、必要に応じて、排出ポート7に上記ワンタ
ッチ管継手25、消音器、排気清浄器等を装着することが
できる。When a tube is inserted into each of the inlet port 12 and the outlet port 6, a plurality of locking claws at the tip of the chuck 26 are locked to the tube and the seal member 27 seals the outer wall of the tube, and the release bush 28 is pushed in. Then, the so-called one-touch fittings 25, 25, which unlock the tube by the locking claws and allow the tube to be pulled out, are attached. If necessary, the one-touch fitting 25, which is described above, is attached to the discharge port 7. A muffler, an exhaust purifier, etc. can be attached.
上記実施例は、切換弁21によって圧縮空気を入口ポート
12に供給すると、ダイヤフラム3が入口ポート12の空気
圧で変位して、供給弁座14を開放するとともに排出弁座
9を閉鎖するので、圧縮空気がダイヤフラム3の開口3a
を通って出口ポート6から流出し、配管22を通って圧力
室23aに供給されて空気圧シリンダ23が駆動する(第1
図参照)。In the above embodiment, the switching valve 21 is used to introduce compressed air into the inlet port.
When it is supplied to 12, the diaphragm 3 is displaced by the air pressure of the inlet port 12 to open the supply valve seat 14 and close the discharge valve seat 9, so that compressed air is opened by the opening 3a of the diaphragm 3.
Through the pipe 22, and is supplied to the pressure chamber 23a through the pipe 22 to drive the pneumatic cylinder 23 (first
See figure).
この場合、排出弁座9の径をダイヤフラム3の開口3aよ
りも大径にしたので、ダイヤフラム3に開口3aがあって
も排出弁座9は確実に閉鎖される。In this case, since the diameter of the discharge valve seat 9 is made larger than the diameter of the opening 3a of the diaphragm 3, the discharge valve seat 9 is reliably closed even if the diaphragm 3 has the opening 3a.
切換弁21の切換えによって入口ポート12を外部に連通す
ると、出口ポート6の流体圧によりダイヤフラム3が変
位して、排出弁座9を開放するとともに供給弁座14を閉
鎖する。この場合、供給弁座14を、開口3aよりも大径の
環状に形成したので、開口3aがあっても供給弁座14の閉
鎖に支承はない(第2図参照)。したがって、圧力室23
aの圧縮空気が排出ポート7から急速に排出されるの
で、コストの低い小形の切換弁21と細い配管20,22を使
用しても、流体圧アクチュエータを高速度で動作させる
ことができる。When the inlet port 12 communicates with the outside by switching the switching valve 21, the diaphragm 3 is displaced by the fluid pressure of the outlet port 6 to open the discharge valve seat 9 and close the supply valve seat 14. In this case, since the supply valve seat 14 is formed in an annular shape having a larger diameter than the opening 3a, there is no support for closing the supply valve seat 14 even with the opening 3a (see FIG. 2). Therefore, the pressure chamber 23
Since the compressed air of a is rapidly discharged from the discharge port 7, the fluid pressure actuator can be operated at high speed even if the small-sized switching valve 21 and the thin pipes 20 and 22 which are low in cost are used.
この場合、ハンドル18によってニードル4を縮径部10に
対して進退させることにより、排出流路8の絞り開度を
調節して排気能力を圧力室23aの容積に応じた適切なも
のに調整することができ、ニードル4の位置はロックナ
ット17によって固定される。In this case, by moving the needle 4 forward and backward with respect to the reduced diameter portion 10 by the handle 18, the throttle opening degree of the discharge passage 8 is adjusted and the exhaust capacity is adjusted to an appropriate value according to the volume of the pressure chamber 23a. The position of the needle 4 is fixed by the lock nut 17.
したがって、過度の急速排気による断熱膨張に伴う結露
を防止できるので、1種類の急速排気弁で、多種の容積
の流体圧アクチュエータに対応することができる。Therefore, dew condensation due to adiabatic expansion due to excessive rapid exhaust can be prevented, so that one type of rapid exhaust valve can be applied to fluid pressure actuators of various volumes.
また、上記実施例は、弁本体1とアダプタ2の間にダイ
ヤフラム3を挾持し、弁本体1にニードル4を螺着した
だけの簡単な構成なので、部品点数が少く組付けが簡単
である。Further, in the above embodiment, since the diaphragm 3 is held between the valve body 1 and the adapter 2 and the needle 4 is screwed to the valve body 1, the number of parts is small and the assembly is easy.
[考案の効果] 本考案の可変絞り付きダイヤフラム形急速排気弁は、流
体圧アクチュエータの排気を急速度で排出できるため、
切換弁や配管を小形、小径のものにすることができ、こ
れによって流体圧アクチュエータの動作速度が速いもの
でありながら、流体回路を安価なものにすることができ
る。[Advantage of the Invention] The diaphragm type quick exhaust valve with a variable throttle of the present invention can discharge the exhaust of the fluid pressure actuator at a rapid speed.
The switching valve and the piping can be made small and small in diameter, which makes it possible to make the fluid circuit inexpensive while the operation speed of the fluid pressure actuator is high.
また、ニードルによって排出流路の絞り開度を調整でき
るので、1種類の弁によって多種の流体圧アクチュエー
タの圧力室の容積変化に対応することができ、これによ
って部品点数が少くなってコストを低減できるばかりで
なく、在庫管理が簡単になる。Also, since the throttle opening of the discharge flow path can be adjusted by the needle, it is possible to respond to the volume changes of the pressure chambers of various fluid pressure actuators with one type of valve, which reduces the number of parts and reduces the cost. Not only can it be done, but inventory management will be easier.
さらに、ダイヤフラムとニードルとを設けただけの極め
て簡単な構成を有するので、組付けが容易である。Furthermore, since it has an extremely simple structure in which only the diaphragm and the needle are provided, the assembly is easy.
図面は本考案の実施例を示し、第1図は圧力流体供給時
の縦断面図、第2図は圧力流体排出時の縦断面図であ
る。 3……ダイヤフラム、3a……開口、 4……ニードル、6……出口ポート、 7……排出ポート、8……排出流路、 9……排出弁座、12……入口ポート、 13……供給流路、14……供給弁座。The drawings show an embodiment of the present invention. FIG. 1 is a vertical sectional view when a pressure fluid is supplied, and FIG. 2 is a vertical sectional view when a pressure fluid is discharged. 3 ... Diaphragm, 3a ... Opening, 4 ... Needle, 6 ... Exit port, 7 ... Discharge port, 8 ... Discharge passage, 9 ... Discharge valve seat, 12 ... Inlet port, 13 ... Supply channel, 14 ... Supply valve seat.
Claims (1)
出ポートと、上記出口ポートと入口ポート及び排出ポー
トとを連通させる供給流路及び排出流路と、対向させて
配設したこれらの流路中の供給弁座及び排出弁座と、こ
れらの弁座を開閉する弁体とを備えた急速排気弁におい
て、 上記弁体を、圧力流体を通過させるための開口を有する
ダイヤフラムによって構成し、 上記弁座の一方を上記開口の径よりも大径の内径を有す
る環状に、他方を開口の径よりも大径に形成し、 上記排出流路の排出弁座より下流側に、排出流路を絞る
ためのニードルを、絞り開度調節可能に設けた、 ことを特徴とする可変絞り付きダイヤフラム形急速排気
弁。1. An inlet port, an outlet port, and a discharge port for a pressure fluid, and a supply passage and a discharge passage for communicating the outlet port with the inlet port and the discharge port, and these passages arranged to face each other. In a rapid exhaust valve having a supply valve seat and a discharge valve seat therein, and a valve body for opening and closing these valve seats, the valve body is constituted by a diaphragm having an opening for passing a pressure fluid, One of the valve seats is formed in an annular shape having an inner diameter larger than the diameter of the opening, and the other is formed in a diameter larger than the diameter of the opening, and the discharge flow passage is provided downstream of the discharge valve seat of the discharge flow passage. A diaphragm type quick exhaust valve with a variable throttle, which is provided with a needle for throttling so that the throttle opening can be adjusted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2604890U JPH0636368Y2 (en) | 1990-03-14 | 1990-03-14 | Diaphragm type quick exhaust valve with variable throttle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2604890U JPH0636368Y2 (en) | 1990-03-14 | 1990-03-14 | Diaphragm type quick exhaust valve with variable throttle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03117173U JPH03117173U (en) | 1991-12-04 |
JPH0636368Y2 true JPH0636368Y2 (en) | 1994-09-21 |
Family
ID=31528958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2604890U Expired - Lifetime JPH0636368Y2 (en) | 1990-03-14 | 1990-03-14 | Diaphragm type quick exhaust valve with variable throttle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0636368Y2 (en) |
-
1990
- 1990-03-14 JP JP2604890U patent/JPH0636368Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH03117173U (en) | 1991-12-04 |
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