JP2663226B2 - Constant flow valve - Google Patents
Constant flow valveInfo
- Publication number
- JP2663226B2 JP2663226B2 JP4224546A JP22454692A JP2663226B2 JP 2663226 B2 JP2663226 B2 JP 2663226B2 JP 4224546 A JP4224546 A JP 4224546A JP 22454692 A JP22454692 A JP 22454692A JP 2663226 B2 JP2663226 B2 JP 2663226B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- flow
- cylinder
- flow rate
- 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 - Fee Related
Links
Landscapes
- Safety Valves (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は流体の流量を使用中に設
定可能にした定流量弁に関するもので、液体および気体
を取扱う種々の工業分野における設備機器への利用を目
的としている。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant flow valve capable of setting a flow rate of a fluid during use, and is intended for use in equipment in various industrial fields dealing with liquids and gases.
【０００２】[0002]
【従来の技術】この種の定流量弁については、これまで
に実公昭５３−５２０９２号公報や実公平３−５１５６
１号公報のものが知られている。前者では導管内にオリ
フィス板と円筒状弁体を内蔵し、オリフィスの通路面積
によって定まる一定流量を制御可能にしている。また後
者によると、円筒状主体内で内筒にコイルスプリングを
介して連結する弁体と縮流管を組み込むことによって、
ばね力と弁体の流体抵抗との平衡により弁体位置を変
え、一定流量を制御する構造が提示されている。これら
の定流量弁ではすべて設定流量が固定されるので、流量
を変更する必要がある場合にはそのつど定流量弁を分解
して、オリフィス板または縮流管（弁座）を所定寸法の
ものに変更しなければならない。2. Description of the Related Art A constant flow valve of this type has been disclosed in Japanese Utility Model Publication No. 53-52092 and Japanese Utility Model Publication No. 3-5156.
No. 1 is known. In the former, an orifice plate and a cylindrical valve body are incorporated in a conduit, and a constant flow rate determined by the passage area of the orifice can be controlled. According to the latter, by incorporating a valve body and a contraction pipe connected to the inner cylinder via a coil spring in the cylindrical main body,
A structure has been proposed in which the position of a valve body is changed by controlling the balance between the spring force and the fluid resistance of the valve body to control a constant flow rate. Since the set flow rate is fixed in all of these constant flow valves, when it is necessary to change the flow rate, the constant flow valve must be disassembled each time and the orifice plate or contraction pipe (valve seat) must be of a predetermined size. Must be changed to
【０００３】また使用中に流量調整が可能な定流量弁と
して特開昭３−１１７７８８号公報のものがある。これ
は動作原理としては先に述べた実公平３−５１５６１号
公報のものと同じで、縮流管に臨んで設けられた弁体の
流体抵抗とばね力との平衡により一定流量に制御するも
のである。そしてこの発明の場合は弁本体の形状をばね
の位置を外部から変更できるものにし、これによりばね
の位置を変えて設定流量を変えるものである。Japanese Patent Laid-Open Publication No. 3-117788 discloses a constant flow valve capable of adjusting a flow rate during use. The principle of operation is the same as that of the above-mentioned Japanese Utility Model Publication No. 3-56161, in which a constant flow rate is controlled by balancing the fluid resistance and spring force of a valve element provided facing the contraction pipe. It is. In the case of the present invention, the shape of the valve body is such that the position of the spring can be changed from the outside, thereby changing the position of the spring to change the set flow rate.
【０００４】[0004]
【発明が解決しようとする課題】従来法による流量設定
型（固定型）の定流量弁では、上述のように製造段階で
弁の口径に依存する流量が使用者の仕様に従って設定さ
れているが、流量の変更が必要な場合にはオリフィス板
または弁座を所定寸法のものに変更し、必要に応じて流
量試験を実施しなければならない。また別途に定流量弁
一式を交換することもある。そのため大幅なコスト高を
招くことにもなる。In the flow rate setting type (fixed type) constant flow valve according to the conventional method, the flow rate depending on the valve diameter is set in accordance with the user's specifications at the manufacturing stage as described above. When it is necessary to change the flow rate, the orifice plate or the valve seat must be changed to a predetermined size, and a flow rate test must be performed as necessary. Also, the complete set of constant flow valves may be replaced separately. As a result, the cost is greatly increased.
【０００５】また特開昭３−１１７７８８号公報の流量
調整式の定流量弁においても、流量調節は縮流管の形状
とばね定数の組合せに依存しているため、広範囲の調節
を行なうためにはばねを二重構造にしたり、装置の調整
が難しい点がある。本発明は上記の問題点から、使用中
においても流量設定値の調整が広範囲かつ正確迅速に再
現性よくできる定流量弁を提供することを目的とする。In the constant flow valve of the flow control type disclosed in Japanese Patent Application Laid-Open No. 3-117788, the flow control is dependent on the combination of the shape of the contraction tube and the spring constant. In some cases, the spring has a double structure, and it is difficult to adjust the device. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a constant flow valve capable of adjusting a flow rate set value over a wide range, accurately, quickly and with good reproducibility even during use.
【０００６】[0006]
【課題を解決するための手段】本発明は前記課題を解決
するものであって、流体の流れ方向を軸とする円筒状の
本体の出口部に弁座を設け、円筒面に流通孔を設けた底
つき円筒状の弁体をその開放端が前記弁座に対向するよ
うに設け、前記弁体はその内部を前記流通孔より開放端
側において閉塞しかつ前記本体の出口部で固定されたガ
イドに沿って摺動可能にするとともにその底部内面とガ
イド間にコイルスプリングを設け、前記弁体の底部外面
を囲んで連通路の他は閉塞しかつ前記本体に固定された
弁筒を弁体と摺動可能に設け、前記本体の入口側には流
量設定弁を設けると共にその上流側と前記弁体の底部外
面とを前記連通路によって連通せしめたことを特徴とす
る定流量弁である。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a valve seat at an outlet portion of a cylindrical body whose axis is the flow direction of a fluid, and a flow hole formed in a cylindrical surface. A cylindrical valve body with a bottom is provided so that its open end faces the valve seat, and the valve body has its inside closed at the open end side from the communication hole and fixed at the outlet of the main body. A valve spring slidable along the guide and provided with a coil spring between the bottom inner surface and the guide, and surrounding the bottom outer surface of the valve body, other than the communication path, is closed and the valve cylinder fixed to the body is a valve body. And a flow setting valve is provided at the inlet side of the main body, and the upstream side thereof and the bottom outer surface of the valve body are communicated through the communication passage.
【０００７】また、ここにおいて弁体の底部内面とガイ
ド間において、その一方にシリンダー、他方にピストン
を結合せしめたダンパーを設けたこと、さらには弁体の
流量孔にはメッシュストレーナを設けたことも特徴とす
る。また弁体はガイドでの閉塞部位より開放端側におい
て、弁体の円筒側面の厚さの分だけ縮径されていること
も特徴とする。またさらに流量設定弁は円錐体の弁体に
その軸と直角方向の弁棒が結合されていること、または
流量設定弁は円錐体の一部分を軸と平行な面から欠いた
弁体にその軸と直角方向の弁棒が結合されていることも
特徴とする。In this case, between the inner surface at the bottom of the valve body and the guide, a cylinder is provided on one side and a damper having a piston connected to the other side, and a mesh strainer is provided on the flow hole of the valve body. Also features. Further, the valve body is characterized in that its diameter is reduced by an amount corresponding to the thickness of the cylindrical side surface of the valve body on the open end side of the closed portion of the guide. Further, the flow setting valve has a conical valve body connected to a valve stem in a direction perpendicular to the axis, or the flow setting valve has a part of the cone which is provided on a valve body lacking a plane parallel to the axis. It is also characterized in that a valve stem in a direction perpendicular to the shaft is connected.
【０００８】[0008]
【作用】図１は本発明の定流量弁の断面図で原理を説明
するため細部を省略している。なお、図中矢印の線は流
体通路を示す。流体の流れ方向を軸とする略円筒状の本
体１の出口部１ｂには弁座２が設けられ、これと対向し
て底つき円筒状の弁体５をその開放端５ｃが弁座２と対
向するよう設けられて、流量調節弁２０を構成してい
る。これにより流体は本体１と弁体５の間を流れるよう
になっている。この弁体５には流通孔５ａを１つまたは
複数設け、弁体内外の圧力がこの部分で同じＰ2 になる
ようにしている。FIG. 1 is a sectional view of a constant flow valve according to the present invention, in which details are omitted to explain the principle. Note that the arrow line in the figure indicates a fluid passage. A valve seat 2 is provided at an outlet portion 1b of the substantially cylindrical main body 1 whose axis is the flow direction of the fluid. The flow control valves 20 are provided so as to face each other. Thereby, the fluid flows between the main body 1 and the valve body 5. The valve body 5 through channels 5a provided one or more in, the pressure outside the valve body is set to be the same P 2 in this portion.
【０００９】一方、ガイド３が弁体５の内部を流通孔５
ａより弁体の開放端側において閉塞しつつ、弁体が摺動
できるように設けられており、ガイド３は本体１の出口
部１ｂにおいて支持固定されている。またガイド３と弁
体５の底部５ｂの内面との間にはコイルスプリング１１
を入れている。On the other hand, the guide 3 extends through the inside of the valve
The valve 3 is provided so as to be slidable while closing on the open end side of the valve from a. The guide 3 is supported and fixed at the outlet 1 b of the main body 1. A coil spring 11 is provided between the guide 3 and the inner surface of the bottom 5b of the valve body 5.
Has been put.
【００１０】また弁体５の底部５ｂの外部を囲んで摺動
可能にされた弁筒７が本体１に固定されている。弁筒７
は１つまたは複数の連通路７ａを有する他は弁体５の底
部外面を閉塞している。本体１の入口側には流量設定弁
２１が設けられ、その上流側と、弁筒７で囲まれた弁体
５の底部外面とが連通路７ａにより連通されている。こ
れにより弁体５の底部外面が定流量弁の入口の圧力Ｐ1
になるようにしている。A valve sleeve 7 slidably surrounding the bottom 5b of the valve body 5 is fixed to the main body 1. Valve sleeve 7
The other has one or a plurality of communication passages 7a and closes the bottom outer surface of the valve body 5. A flow rate setting valve 21 is provided on the inlet side of the main body 1, and the upstream side thereof is communicated with an outer bottom surface of the valve element 5 surrounded by the valve cylinder 7 by a communication passage 7 a. As a result, the bottom outer surface of the valve body 5 has a pressure P 1 at the inlet of the constant flow valve.
I am trying to be.
【００１１】本発明の定流量弁は以上の構成により下記
の作用をする。すなわち、流体は本体入口部１ａの圧力
Ｐ1 から流量設定弁２１の出側の圧力Ｐ2 になり、本体
出側流量調節弁２０を経て本体出口１ｂの圧力Ｐ3 にな
る。ここにおいて、弁体５の底部外面は連通路７ａによ
りＰ1 となっており、一方内面はガイド３により閉塞さ
れて流通孔５ａが設けられているのでＰ2 になってい
る。したがって弁体５の底部５ｂには内外の圧力差Ｐ1
−Ｐ2 がかかり、コイルスプリング１１を圧縮して平衡
し、流量調節弁２０をある開度にする。The constant flow valve according to the present invention has the following functions by the above-described structure. That is, the fluid changes from the pressure P 1 at the main body inlet 1 a to the pressure P 2 at the outlet of the flow rate setting valve 21, passes through the main body outlet flow control valve 20, and changes to the pressure P 3 at the main body outlet 1 b. Here, the outer bottom surface of the valve body 5 is made has a P 1, whereas since the inner surface flow hole 5a is provided is blocked by the guide 3 to P 2 by communicating path 7a. Therefore, the pressure difference P 1 between the inside and outside is located at the bottom 5b of the valve element 5.
-P 2-consuming, and equilibrated to compress the coil spring 11, to the opening in the flow regulating valve 20.
【００１２】ここでＰ1 の圧力が上昇して流量が増大す
ると、流量設定弁２１の抵抗によりＰ1 −Ｐ2 が上昇
し、弁筒５は図１で左方に移動する。したがって流量調
節弁２０の開度が減少して流量を減少せしめると共にＰ
2 の圧力も上昇して、Ｐ1 −Ｐ2 がほぼ一定に保たれる
と共に流量は一定になるように調節される。Ｐ1 の下降
やＰ3 の上昇、下降による流量の変動に対しても上記と
同様な調節機能により流量が一定に保たれることにな
る。[0012] Here, the pressure of P 1 is flow rate increases increases, P 1 -P 2 is increased by the resistance of the flow rate setting valve 21, the valve tube 5 is moved to the left in FIG. 1. Accordingly, the opening degree of the flow control valve 20 is reduced to reduce the flow rate,
The pressure of 2 is also increased so that P 1 -P 2 is kept substantially constant and the flow rate is adjusted to be constant. Increase in downward and P 3 of P 1, it becomes possible to flow by the similar regulatory function is kept constant with respect to variations in flow rate by the lowering.
【００１３】ここで流量設定弁２１の開度をたとえば大
きくすると流量は増大する。その結果としてＰ2 とＰ3
の圧力差は増大し、出口圧力Ｐ3 が変わらなければＰ2
が上昇する。したがってＰ1 −Ｐ2 が減少し、弁体５は
図１で右の方へ移動し、流量調節弁２０の開度が大きく
なり、Ｐ2 の圧力を下げてＰ1 −Ｐ2 をもとに戻そうと
する。したがって流量が大きくなった状態で平衡に達す
ることになる。このように流量設定弁２１の開度を変え
ればそのときのこの部分での差圧Ｐ1 −Ｐ2 を保持する
ように調節が行なわれ、流量が変わることになる。Here, when the opening of the flow rate setting valve 21 is increased, for example, the flow rate increases. As a result, P 2 and P 3
Pressure difference increases, and if the outlet pressure P 3 does not change, P 2
Rises. Therefore, P 1 -P 2 decreases, the valve element 5 moves to the right in FIG. 1, the opening of the flow control valve 20 increases, and the pressure of P 2 is reduced to obtain P 1 -P 2 . Try to return to. Therefore, equilibrium is reached with the flow rate increasing. If the opening degree of the flow rate setting valve 21 is changed in this manner, adjustment is performed so as to maintain the differential pressure P 1 -P 2 in this portion at that time, and the flow rate changes.
【００１４】このように本発明の定流量弁においてはＰ
2 −Ｐ3 には関係せずＰ1 −Ｐ2 のみに従って流量が保
持され、高精度かつ安定な制御が行なえる。本発明の定
流量弁においては、ばね定数は調節感度に関係し、小さ
い方が感度が良くなるが、負帰還による自動制御の常と
して調節感度を良くするとハンチングによる振動を発生
しやすくなる。したがってガイド３と弁体５の底部５ｂ
との間にダンパー（図１では図示せず）を入れて振動を
押さえるとよい。ダンパーは狭い通路を流体が出入する
抵抗によるダッシュポット式が適当である。またこのた
め出入りする流体にごみが入らないよう弁体５の流通孔
５ａにメッシュストレーナを設けるとよい。Thus, in the constant flow valve of the present invention, P
The flow rate is maintained in accordance with only P 1 -P 2 irrespective of 2- P 3 , and highly accurate and stable control can be performed. In the constant flow valve of the present invention, the spring constant is related to the adjustment sensitivity, and the smaller the spring constant, the higher the sensitivity. However, if the adjustment sensitivity is improved as always in the automatic control by negative feedback, vibration due to hunting tends to occur. Therefore, the guide 3 and the bottom 5b of the valve body 5
A vibration may be suppressed by inserting a damper (not shown in FIG. 1) between these two. The damper is suitably of a dashpot type based on the resistance of the fluid flowing in and out of the narrow passage. For this reason, it is preferable to provide a mesh strainer in the flow hole 5a of the valve body 5 so as to prevent dust from entering and leaving the fluid.
【００１５】また先に本発明の定流量弁差圧Ｐ1 −Ｐ2
に依存して調節が行なわれると述べたが、弁体５の底部
５ｂの内面の面積は外面の面積より弁体側面の厚みの分
だけ小さく誤差になる。したがってこの分を補正するた
め、弁体はガイド３による閉塞部位より開放端側におい
て、弁体の円筒側面の厚さの分だけ縮径されているとよ
い。図１において５ｄの部分がそれであり、この段差部
分の軸方向への投影面積に対して一方からはＰ2 が、他
方からはＰ3 が加わることになる。ここにおいてＰ2 は
弁体底部の面積の内外差を補償し、Ｐ3 は弁体の開放端
面５ｃにかかるＰ3 と平衡することになる。Further, first, the constant flow valve differential pressure P 1 -P 2 according to the present invention.
However, it is described that the adjustment is performed depending on the above, but the area of the inner surface of the bottom 5b of the valve body 5 is smaller than the area of the outer surface by an amount corresponding to the thickness of the side surface of the valve body, resulting in an error. Therefore, in order to compensate for this, the valve body is preferably reduced in diameter by the thickness of the cylindrical side surface of the valve body on the open end side from the portion closed by the guide 3. And it is the portion of 5d in FIG. 1, one from the P 2 for a projected area in the axial direction of the step portion, so that the P 3 applied from the other. P 2 wherein compensates for internal and external differential area of the valve body bottom, P 3 will be in equilibrium with P 3 according to the open end face 5c of the valve body.
【００１６】本発明において流量設定弁２１の構造は特
に限定するものではないが、流量の設定値が外部から明
確にわかるものがよい。したがって少ない回転で流量が
変化するものが好ましく、本発明においては図４に示し
たような円柱の上面と下面が円柱軸と傾斜面をなすよう
に切り取られた設定弁弁体８（本体の弁体５と区別する
ため本発明では前後関係から特に明白な場合以外は設定
弁弁体という）を図１のように、弁棒９が弁体の前記円
柱軸に結合されて回転するものを特に好ましい流量設定
弁として提供する。この設定弁弁体の円柱の柱面の流路
との対向面積を弁棒の回転により変化させて流量を調節
することができる。すなわち図１において設定弁弁体８
の部分に示した矢印のように流体は弁体の所を経て弁棒
の軸方向に沿って流出するようになっている。なお図中
の連通路７ａは管状のもので流量設定弁における流体の
流れの障害にはならない。図１においては設定弁弁体は
閉止状態における位置を示しているが、１８０度の回転
で最大流量にでき、この間ほぼ直線的に流量を変化でき
る。また設定弁弁体は図５のような円柱の上面、下面の
一方が傾斜面になっているのも使用でき、円柱の上面ま
たは下面の少なくとも一方が円柱軸と傾斜面になってい
ればよい。また円柱面の流路との対向面積が完全閉止に
至らないようなものも実施例でも示すように目的とする
制御範囲によって適用可能である。 In the present invention, the structure of the flow rate setting valve 21 is not particularly limited, but it is preferable that the set value of the flow rate can be clearly understood from the outside. Therefore, it is preferable that the flow rate changes with a small number of rotations .
The upper and lower surfaces of such a cylinder should be inclined with the cylinder axis.
Setting valve valve body 8 (to be distinguished from valve body 5 of the main body)
Therefore, in the present invention, setting is performed unless otherwise apparent from the context.
As shown in FIG. 1, the valve rod 9 is the circle of the valve element.
Particularly preferred flow settings for those rotating and coupled to the column axis
Provide as a valve. The flow path of the cylinder surface of this setting valve valve body
The flow rate is adjusted by changing the area facing
can do. That is, in FIG.
The fluid passes through the valve body as indicated by the arrow
Flows out along the axial direction. In the figure
The communication passage 7a is of a tubular shape and has a
It does not obstruct the flow. In FIG. 1, the setting valve valve body is
Shows the position in the closed state, but rotates 180 degrees
The maximum flow rate can be obtained by changing the flow rate almost linearly during this time.
You. In addition, the setting valve valve body is located on the upper and lower surfaces of a cylinder as shown in FIG.
One side can also be used as an inclined surface.
Or at least one of the lower surfaces has a cylindrical axis and an inclined surface.
Just do it. Also, the area of the cylindrical surface facing the flow path is completely closed.
The purpose is as shown in the examples even if it does not reach
Applicable depending on the control range.
【００１７】[0017]
【実施例】本発明の定流量弁の実施例を図面により説明
する。図２は本発明の実施例を示す断面図で、一方を流
体の入口側１ａとし他方を出口側１ｂとした円筒状本体
１内に、弁筒７をボルト１６で固定し、該弁筒７にダン
パー６、ガイド３およびスプリング１１を挿入した筒状
の移動体である弁体５を挿着する。該弁体５には流体の
流入孔５ａを複数有し、該流入孔５ａにはストレーナ１
０を設ける。該弁体５から突出するガイド３の先端には
弁座２を、弁体５と対向するようにして円筒状本体１に
螺着し、かつガイド３のねじ部を該弁座２に戻り止めナ
ット４で螺着する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a constant flow valve according to the present invention will be described with reference to the drawings. FIG. 2 is a cross-sectional view showing an embodiment of the present invention, in which a valve cylinder 7 is fixed with bolts 16 in a cylindrical main body 1 in which one side is a fluid inlet side 1a and the other is an outlet side 1b. The valve body 5, which is a cylindrical moving body, into which the damper 6, the guide 3, and the spring 11 are inserted, is inserted. The valve body 5 has a plurality of fluid inflow holes 5a.
0 is provided. The valve seat 2 is screwed to the cylindrical body 1 at the tip of the guide 3 projecting from the valve body 5 so as to face the valve body 5, and the threaded portion of the guide 3 is returned to the valve seat 2 and stopped. Screw with nut 4.
【００１８】本発明の特徴の一つは弁筒７に流量設定弁
を設けたことにあり、弁筒７には弁棒９を円筒状本体１
の入口側の胴部を貫通してその軸方向と直角に取り付
け、該弁棒９には設定弁弁体８を止めねじ１５で固定
し、該円筒状本体１から突出する該弁棒９にはつまみ１
２を取り付け、該つまみ１２を回転することにより円筒
状本体１に固定した目盛板１３を見ながら流量を設定で
きるようになっている。なおロックねじ１４は設定弁弁
体８が流体によって回転するのを防止するためのもので
ある。図３はこのつまみ１２と目盛板１３の部分をその
正面から見た図である。また弁筒７には本体入口１ａと
を結ぶ連通路７ａが流量設定弁２１の周辺を貫通して複
数設けられている。One of the features of the present invention is that a valve 7 is provided with a flow rate setting valve, and a valve rod 9 is attached to the valve body 7.
The setting valve valve body 8 is fixed to the valve rod 9 with a set screw 15, and is attached to the valve rod 9 projecting from the cylindrical main body 1. Snack 1
By attaching the knob 2 and rotating the knob 12, the flow rate can be set while looking at the scale plate 13 fixed to the cylindrical main body 1. The lock screw 14 is for preventing the setting valve valve body 8 from rotating by the fluid. FIG. 3 is a view of the knob 12 and the scale plate 13 as viewed from the front. The valve cylinder 7 is provided with a plurality of communication passages 7a connecting to the main body inlet 1a and penetrating the periphery of the flow rate setting valve 21.
【００１９】本実施例の定流量弁にはさらにつぎのよう
な特徴を備えている。弁体５には該弁体５内外の圧力を
同圧にするために、複数の流入口５ａを有しており、該
流入口５ａにはごみの進入を阻止するためにストレーナ
１０ａを設定しているので、ごみ詰まりによる作動不良
の発生を回避している。また弁体５の内部にはダンパー
６からなる緩衝機構を装備しているので、流体による弁
体５のハンチングや振動による騒音の発生を防止してい
る。The constant flow valve of the present embodiment further has the following features. The valve element 5 has a plurality of inflow ports 5a for equalizing the pressure inside and outside the valve element 5 and a strainer 10a is set in the inflow port 5a to prevent ingress of dust. As a result, the occurrence of malfunction due to clogging of dust is avoided. Further, since a damping mechanism including a damper 6 is provided inside the valve body 5, noise generated by hunting and vibration of the valve body 5 due to fluid is prevented.
【００２０】図４および図５はそれぞれ本実施例および
他の実施例における設定弁弁体８の形状を示したもの
で、（ａ）は回転軸に平行な断面図、（ｂ）は回転軸方
向からの見た図である。本定流量弁の流量設定範囲は任
意に選択でき、図２および図４の本実施例では円柱の上
面と下面が円柱軸と傾斜面をなすように切り取られた形
状の弁体に対し、その円柱軸に弁棒が結合されており、
流量を０〜１００％に設定する場合に適している。また
図５は円柱の上面だけが円柱軸と傾斜面をなすように切
り取られた形状の弁体で、下側に常に流路が開いており
（取り付けるときのねじの位置は図４と同じ）、３０〜
１００％に設定する場合に適した実施例を示している。
したがって使用者の要望に応じて図４に示した弁体の流
量設定弁または図５に示した弁体の流量設定弁を選択
し、さらに弁棒９への設定弁弁体８の取付け位置を指定
することができる。FIGS. 4 and 5 show the shape of the setting valve element 8 in this embodiment and another embodiment, respectively. FIG. 4A is a sectional view parallel to the rotation axis, and FIG. It is the figure seen from the direction. Flow rate setting range of the constant flow valve can be arbitrarily selected, on the cylinder in the present embodiment of FIG. 2 and FIG. 4
Surface and bottom cut out to form an inclined surface with the cylinder axis
The valve stem is connected to the cylindrical axis of the valve
It is suitable when the flow rate is set to 0 to 100%. FIG. 5 shows that only the upper surface of the cylinder is inclined with the cylinder axis.
The valve body has a shape that has been removed, and the flow path is always open on the lower side (the screw position when mounting is the same as in FIG. 4).
An example suitable for setting to 100% is shown.
Therefore , the flow of the valve element shown in FIG.
The quantity setting valve or the flow rate setting valve of the valve element shown in FIG. 5 can be selected, and further, the mounting position of the setting valve element 8 on the valve rod 9 can be designated.
【００２１】[0021]
【発明の効果】本発明の定流量弁は以上のような構成に
より任意の設定流量に精度よく保持でき、流量設定範囲
も完全な閉止に至るまで広範囲にとることができる。ま
た実施例に示したような流量設定弁にするときには少な
い回転角度で明確に流量設定ができ、ロックして一定に
保持できる。またダンパーを設けることにより高感度の
調節を行なってもハンチングによる振動騒音の発生を防
止できる。また構造もコンパクトで配管への取付けが容
易であるので、流体を取扱う多くの工業分野に寄与する
定流量弁を提供することができる。The constant flow valve of the present invention can accurately maintain an arbitrary set flow rate with the above-described configuration, and can set a wide flow rate range up to complete closing. Further, when the flow rate setting valve as shown in the embodiment is used, the flow rate can be clearly set with a small rotation angle, and can be locked and maintained at a constant value. Also, the provision of the damper can prevent the generation of vibration noise due to hunting even when high sensitivity adjustment is performed. In addition, since the structure is compact and easy to attach to a pipe, it is possible to provide a constant flow valve that contributes to many industrial fields dealing with fluid.
【図１】本発明の定流量弁の断面を示す原理図FIG. 1 is a principle view showing a cross section of a constant flow valve according to the present invention.
【図２】本発明の定流量弁の実施例を示す断面図FIG. 2 is a sectional view showing an embodiment of a constant flow valve according to the present invention.
【図３】流量設定つまみの部分をその前面から見た図FIG. 3 is a view of a flow setting knob as viewed from the front thereof.
【図４】図２の実施例における流量設定弁弁体を示す図
で、（ａ）は回転軸に平行な断面図、（ｂ）は回転軸方
向から見た図4A and 4B are diagrams showing a flow rate setting valve valve element in the embodiment of FIG. 2, wherein FIG. 4A is a cross-sectional view parallel to the rotation axis, and FIG.
【図５】他の実施例における流量設定弁弁体を示す図
で、（ａ）は回転軸に平行な断面図、（ｂ）は回転軸方
向から見た図5A and 5B are views showing a flow rate setting valve valve element according to another embodiment, wherein FIG. 5A is a cross-sectional view parallel to a rotation axis, and FIG.
１ 本体 １ａ 入口部 １ｂ 出口部 ２ 弁座 ３ ガイド ５ 弁体 ５ａ 流通孔 ５ｂ 底部 ５ｃ 開放端 ７ 弁筒 ７ａ 連通路 ８ 設定弁弁体 １１ コイルスプリング ２０ 流量調節弁 ２１ 流量設定弁 DESCRIPTION OF SYMBOLS 1 Main body 1a Inlet 1b Outlet 2 Valve seat 3 Guide 5 Valve 5a Flow hole 5b Bottom 5c Open end 7 Valve cylinder 7a Communication passage 8 Setting valve 11 Coil spring 20 Flow control valve 21 Flow setting valve
Claims (5)
の出口部に弁座を設け、円筒面に流通孔を設けた底つき
円筒状の弁体をその開放端が前記弁座に対向するように
設け、前記弁体はその内部を前記流通孔より開放端側に
おいて閉塞しかつ前記本体の出口部で固定されたガイド
に沿って摺動可能にするとともにその底部内面とガイド
間にコイルスプリングを設け、前記弁体の底部外面を囲
んで連通路の他は閉塞しかつ前記本体に固定された弁筒
を弁体と摺動可能に設け、前記本体の入口側には流量設
定弁を設けると共にその上流側と前記弁体の底部外面と
を前記連通路によって連通せしめたことを特徴とする定
流量弁。1. A bottomed cylindrical valve body having an outlet portion of a cylindrical main body whose axis is the fluid flow direction, and a bottomed cylindrical valve body having a flow hole formed in a cylindrical surface, the open end of which is connected to the valve seat. Provided so as to face each other, the valve body closes the inside at the open end side from the communication hole and is slidable along a guide fixed at the outlet of the main body, and between the bottom inner surface and the guide. A coil spring is provided, and a valve cylinder fixed to the main body is provided so as to be slidable with respect to the valve body so as to close the communication path surrounding the bottom outer surface of the valve body and to be slidable with the valve body. Characterized in that an upstream side thereof is communicated with an outer bottom surface of the valve body through the communication passage.
の一方にシリンダー、他方にピストンを結合せしめたダ
ンパーを設けたことを特徴とする請求項１記載の定流量
弁。2. A constant flow valve according to claim 1, wherein a damper having a cylinder coupled to one of the two and a piston coupled to the other is provided between the inner surface of the bottom of the valve body and the guide.
設けたことを特徴とする請求項２記載の定流量弁。3. The constant flow valve according to claim 2, wherein a mesh strainer is provided in the flow hole of the valve body.
において、弁体の円筒側面の厚さの分だけ縮径されてい
ることを特徴とする請求項１、２または３記載の定流量
弁。4. The valve body at the open end side of the occlusion site in the guide, a constant that claim 1, 2 or 3, wherein being reduced in diameter by the amount of the thickness of the cylindrical side surface of the valve body Flow valve.
方または両方が円柱軸と傾斜面をなすように切り取られ
た設定弁弁体に、弁棒が設定弁弁体の前記円柱軸に結合
されており、前記円柱の柱面の流路との対向面積の弁棒
の回転による変化により流量を調節するものであること
を特徴とする請求項１、２、３または４記載の定流量
弁。5. A flow setting valve is provided on one of an upper surface and a lower surface of a cylinder.
One or both sides are cut off at an angle to the cylinder axis
The valve stem is connected to the cylindrical shaft of the set valve body.
A valve stem having an area facing the flow path of the column surface of the cylinder
The flow rate must be adjusted by changing the rotation of the
The constant flow valve according to claim 1, 2, 3, or 4, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4224546A JP2663226B2 (en) | 1992-08-03 | 1992-08-03 | Constant flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4224546A JP2663226B2 (en) | 1992-08-03 | 1992-08-03 | Constant flow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06288488A JPH06288488A (en) | 1994-10-11 |
| JP2663226B2 true JP2663226B2 (en) | 1997-10-15 |
Family
ID=16815491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4224546A Expired - Fee Related JP2663226B2 (en) | 1992-08-03 | 1992-08-03 | Constant flow valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2663226B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6019115A (en) * | 1997-12-19 | 2000-02-01 | Sanders Valve Corporation | Safety excess flow valve system with adjustable closing flow rate settings |
| TR199903301T2 (en) * | 1997-04-01 | 2000-04-21 | Sanders Valve Corporation | Overflow safety valve system with adjustable flow rate shut-off settings |
| JP4150321B2 (en) * | 2003-10-10 | 2008-09-17 | 本田技研工業株式会社 | Continuously variable transmission control device |
| JP2006125558A (en) * | 2004-10-29 | 2006-05-18 | Koatsu Co Ltd | Constant flow valve |
| JP5501755B2 (en) * | 2009-12-28 | 2014-05-28 | 株式会社コーアツ | Constant flow valve |
| JP5502157B2 (en) * | 2012-08-06 | 2014-05-28 | 株式会社コーアツ | Constant flow valve |
| SI2772818T1 (en) * | 2013-02-28 | 2016-08-31 | Imi Hydronic Engineering International Sa | Pressure independent control and balancing valves |
| CN110685652B (en) * | 2019-09-18 | 2024-05-28 | 中国石油天然气股份有限公司 | Concentric constant-flow integrated water distributor and application method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641871B2 (en) * | 1972-06-08 | 1981-09-30 | ||
| JPS49121230A (en) * | 1973-03-26 | 1974-11-20 | ||
| FR2355237A1 (en) * | 1976-06-14 | 1978-01-13 | Alsthom Cgee | ORGAN WITH ADJUSTABLE PRESSURE DROP |
| JPS5396244U (en) * | 1977-01-07 | 1978-08-04 | ||
| JPS59116673U (en) * | 1982-12-20 | 1984-08-07 | 陸田 外一 | constant flow valve |
| JPS59108874U (en) * | 1983-01-14 | 1984-07-23 | 株式会社京浜精機製作所 | flow control valve |
-
1992
- 1992-08-03 JP JP4224546A patent/JP2663226B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06288488A (en) | 1994-10-11 |
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