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JP7050436B2 - Sleeve valve - Google Patents
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JP7050436B2 - Sleeve valve - Google Patents

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JP7050436B2
JP7050436B2 JP2017150541A JP2017150541A JP7050436B2 JP 7050436 B2 JP7050436 B2 JP 7050436B2 JP 2017150541 A JP2017150541 A JP 2017150541A JP 2017150541 A JP2017150541 A JP 2017150541A JP 7050436 B2 JP7050436 B2 JP 7050436B2
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valve body
valve
sleeve valve
sleeve
shaft
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JP2019027565A (en
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吉信 尾形
圭佑 松原
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Kurimoto Ltd
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Description

この発明は、配管の途中又は末端に取り付け、スリーブ弁体によって流量制御又は圧力制御を行うスリーブ弁に関する。 The present invention relates to a sleeve valve that is attached to the middle or end of a pipe and controls the flow rate or pressure by a sleeve valve body.

この種のスリーブ弁としては、例えば、図６～図８に示す、円筒状弁箱１１の一端に流入配管１、他端に流出配管２がそれぞれ接続され、その弁箱１１内に、流入配管１側が閉塞されたシリンダ１２を同一軸に設け、そのシリンダ１２内に周壁一部が多孔（複数の弁孔）１３ｃを有するスリーブ弁体１３を同一軸上に移動可能に設けたものがある（特許文献１段落０００２～同０００４、図５等参照）。 As a sleeve valve of this type, for example, an inflow pipe 1 is connected to one end of a cylindrical valve box 11 and an outflow pipe 2 is connected to the other end of the cylindrical valve box 11 shown in FIGS. A cylinder 12 having a closed side on one side is provided on the same shaft, and a sleeve valve body 13 having a perforated wall (plural valve holes) 13c is provided in the cylinder 12 so as to be movable on the same shaft (a cylinder 12). Patent Document 1, paragraphs 0002 to 0004, see FIG. 5, etc.).

その弁箱１１内に水ｗの流通方向に直交して弁軸１５が挿入されており、この弁軸１５は図示しないハンドルや駆動機によって回転される。
上記スリーブ弁体１３は円筒状であって、前側がシリンダ１２に嵌って摺動するガイド部１３ａと後側がその外周部に多数の弁孔１３ｃが螺旋状に配列された多孔部１３ｂとなっている。そのガイド部１３ａは多孔部１３ｂより大径となってその境が下り勾配の段差となってその下り勾配の段差がスリーブ弁体１３の弁座１４ａとなる。この弁座１４ａは、図８に示すように、スリーブ弁体１３の移動により同一傾斜面の弁箱弁座１４ｂに当接することによって、このスリーブ弁１０を閉弁する。 A valve shaft 15 is inserted into the valve box 11 at right angles to the flow direction of water w, and the valve shaft 15 is rotated by a handle or a driving machine (not shown).
The sleeve valve body 13 has a cylindrical shape, and the front side is a guide portion 13a that fits into the cylinder 12 and slides, and the rear side is a perforated portion 13b in which a large number of valve holes 13c are spirally arranged on the outer peripheral portion thereof. There is. The guide portion 13a has a larger diameter than the porous portion 13b, the boundary thereof becomes a step with a downward slope, and the step with the downward slope becomes the valve seat 14a of the sleeve valve body 13. As shown in FIG. 8, the valve seat 14a closes the sleeve valve 10 by abutting on the valve box valve seat 14b having the same inclined surface by moving the sleeve valve body 13.

上記弁軸１５にはその径方向（軸周り）のクランク１７ａが固着され、そのクランク１７ａの先端にコンロッド１７ｂが回転自在に連結されてリンク機構１７を構成している。コンロッド１７ｂの先端はスリーブ弁体１３のボス１８に回転自在に連結されている。このため、弁軸１５が回転すると、リンク機構１７を介してスリーブ弁体１３は流通方向前後（図６の左右）に移動する。
その移動に伴い、上記スリーブ弁体１３の各弁孔１３ｃがスリーブ弁体１３の軸方向移動で順々に開閉され、両弁座１４ａ、１４ｂが当接していない開弁時（図７の状態）、流入配管１からの水ｗが、弁箱１１内周面とシリンダ１２の外周面との間隙１６からその弁孔１３ｃを通ってスリーブ弁体１３内に流れ込んで流出配管２に流通する。 A crank 17a in the radial direction (around the axis) is fixed to the valve shaft 15, and a connecting rod 17b is rotatably connected to the tip of the crank 17a to form a link mechanism 17. The tip of the connecting rod 17b is rotatably connected to the boss 18 of the sleeve valve body 13. Therefore, when the valve shaft 15 rotates, the sleeve valve body 13 moves back and forth in the distribution direction (left and right in FIG. 6) via the link mechanism 17.
Along with the movement, each valve hole 13c of the sleeve valve body 13 is sequentially opened and closed by the axial movement of the sleeve valve body 13, and both valve seats 14a and 14b are not in contact with each other when the valve is opened (state of FIG. 7). ), The water w from the inflow pipe 1 flows into the sleeve valve body 13 through the valve hole 13c from the gap 16 between the inner peripheral surface of the valve box 11 and the outer peripheral surface of the cylinder 12, and flows to the outflow pipe 2.

このスリーブ弁１０は、図７、図８に示すように、弁軸１５を回転させてリンク機構１７を介してシリンダ１２と弁箱１１の間隙１６にスリーブ弁体１３の弁孔１３ｃを臨ませると、その弁孔１３ｃを通って、流入配管１からの水ｗがスリーブ弁体１３内に流入し、流出配管２に流通する。このとき、弁軸１５の回転でもってスリーブ弁体１３の軸方向の位置を調整して前記間隙１６の臨む弁孔１３ｃの数を調整することによって流量制御又は圧力制御を行う。 As shown in FIGS. 7 and 8, the sleeve valve 10 rotates the valve shaft 15 so that the valve hole 13c of the sleeve valve body 13 faces the gap 16 between the cylinder 12 and the valve box 11 via the link mechanism 17. Then, the water w from the inflow pipe 1 flows into the sleeve valve body 13 through the valve hole 13c and flows to the outflow pipe 2. At this time, the flow rate control or the pressure control is performed by adjusting the axial position of the sleeve valve body 13 by the rotation of the valve shaft 15 and adjusting the number of the valve holes 13c facing the gap 16.

特開２０００－９７３５４号公報Japanese Unexamined Patent Publication No. 2000-97354

上記スリーブ弁における、弁軸１５とクランク１７ａの固定点（弁軸１５の中心点（軸心ｏ））とコンロッド１７ｂのスリーブ弁体１３との連結点ｂは弁箱１１の配管方向中心線ｃ上に位置するため、弁軸１５によるクランク１７ａの回転時、コンロッド１７ｂの軸線と前記中心線ｃにはスラスト角θが生じる。このため、スリーブ弁体１３とコンロッド１７ｂの連結点ｂには、回転力Ｆの分力としてスリーブ弁体１３をシリンダ１２に押し付ける力Ｆ１が作用する。この力Ｆ１によって、スリーブ弁体１３はその力Ｆ１が作用する側（図７、図８において下側）のガイド部１３ａが他の部分（同上側）に比べてシリンダ１２に強く接する片当たりの状態で移動することとなる。
この片当たりが強いと、スリーブ弁体１３の円滑な移動の妨げになるとともに、移動面（摺動面）に焼き付きが生じる恐れがある。これらは、スリーブ弁の円滑な開閉の障害となる。 In the sleeve valve, the connection point b between the fixed point of the valve shaft 15 and the crank 17a (the center point of the valve shaft 15 (axis center o)) and the sleeve valve body 13 of the connecting rod 17b is the center line c in the piping direction of the valve box 11. Since it is located above, a thrust angle θ is generated between the axis of the connecting rod 17b and the center line c when the crank 17a is rotated by the valve shaft 15. Therefore, a force F1 that presses the sleeve valve body 13 against the cylinder 12 acts as a component force of the rotational force F at the connection point b between the sleeve valve body 13 and the connecting rod 17b. Due to this force F1, the sleeve valve body 13 has a piece in which the guide portion 13a on the side on which the force F1 acts (lower side in FIGS. 7 and 8) is in stronger contact with the cylinder 12 than the other parts (upper side). It will move in a hit state.
If this one-sided contact is strong, the sleeve valve body 13 may be hindered from smooth movement, and the moving surface (sliding surface) may be seized. These hinder the smooth opening and closing of the sleeve valve.

この発明は、以上の状況に鑑み、上記片当たりを軽減することを課題とする。 In view of the above circumstances, it is an object of the present invention to reduce the above-mentioned one-sided contact.

上記課題を達成するために、この発明は、上記弁軸の回転軸心（クランクとの固定点）及びスリーブ弁体とコンロッドとの連結点の何れか一方を上記弁箱の配管方向中心線からスリーブ弁体の径方向にずらしたこととしたのである。
このように構成すると、そのずらし方向によって、上記押し付ける力Ｆ１を軽減することができる。そのずらし方向及びずらし度合いは、力Ｆ１の軽減度合いを考慮して適宜に設定する。 In order to achieve the above object, in the present invention, either one of the rotation axis (fixing point with the crank) of the valve shaft and the connection point between the sleeve valve body and the connecting rod is set from the piping direction center line of the valve box. It was decided that the sleeve valve body was displaced in the radial direction.
With this configuration, the pressing force F 1 can be reduced depending on the shifting direction. The shift direction and the degree of shift are appropriately set in consideration of the degree of reduction of the force F1.

この発明の具体的な構成としては、筒状弁箱の一端に流入配管、他端に流出配管がそれぞれ接続され、その弁箱内に、流入配管側が閉塞されたシリンダを同一軸に設け、そのシリンダ内にスリーブ弁体を下流側同一軸上に移動可能に設けたインライン型スリーブ弁において、前記弁箱に横方向から挿入された弁軸と、前記スリーブ弁体とを、弁軸に固定されたクランクとスリーブ弁体に回転自在に連結されたコンロッドとからなるリンク機構により連結し、弁軸の回転に基づき、前記リンク機構によってスリーブ弁体を前記同一軸上に移動させ、かつ、弁軸の回転軸心及びスリーブ弁体とコンロッドとの連結点の何れか一方を弁箱の配管方向中心線からスリーブ弁体の径方向にずらした（オフセットした）構成を採用したのである。 As a specific configuration of the present invention, an inflow pipe is connected to one end of the tubular valve box and an outflow pipe is connected to the other end, and a cylinder whose inflow pipe side is closed is provided in the valve box on the same shaft. In an in-line type sleeve valve in which the sleeve valve body is movable on the same axis on the downstream side in the cylinder, the valve shaft inserted laterally into the valve box and the sleeve valve body are fixed to the valve shaft. It is connected by a link mechanism consisting of a connecting rod rotatably connected to the crank and the sleeve valve body, and based on the rotation of the valve shaft, the sleeve valve body is moved on the same shaft by the link mechanism, and the valve shaft. One of the rotation axis and the connection point between the sleeve valve body and the connecting rod is offset (offset) from the center line of the valve box in the piping direction in the radial direction of the sleeve valve body.

この構成において、上記弁軸の回転軸心を、上記弁箱の配管方向中心線からみて、上記クランクとコンロッドの連結点と同じ側にずらした態様とすれば、スラスト角θを確実に小さくできるから、片当たりも軽減される。また、クランクの回転エリアを大きくとることができるため、クランクの回転（作動）角度を拡大でき、スリーブ弁体の移動長さ（ストローク）の拡大を図ることができて、より精密な流量制御を行うことができる。
このとき、スリーブ弁体の移動長さ（ストローク）が長い場合、コンロッドが弁軸（クランク軸）に接触する恐れが生じるが、コンロッドを弁軸とは反対側に凸の弧状とすることによってその接触を回避することができる（図１参照）。 In this configuration, if the rotation axis of the valve shaft is shifted to the same side as the connection point between the crank and the connecting rod when viewed from the piping direction center line of the valve box, the thrust angle θ can be reliably reduced. Therefore, one-sided hits are also reduced. In addition, since the rotation area of the crank can be made large, the rotation (operation) angle of the crank can be expanded, the movement length (stroke) of the sleeve valve body can be expanded, and more precise flow control can be performed. It can be carried out.
At this time, if the moving length (stroke) of the sleeve valve body is long, there is a risk that the connecting rod will come into contact with the valve shaft (crank shaft). Contact can be avoided (see FIG. 1).

この発明は、以上のように構成し、上記スラスト角θを小さくしたので、片当たりが軽減され、スリーブ弁の円滑な開閉作用を得ることができる。 Since the present invention is configured as described above and the thrust angle θ is reduced, one-sided contact is reduced and a smooth opening / closing action of the sleeve valve can be obtained.

この発明に係るスリーブ弁の一実施形態の切断正面図A cut front view of an embodiment of a sleeve valve according to the present invention. 同実施形態の作用説明用切断正面図Front view of cutting for explaining the operation of the same embodiment 同他の実施形態の切断正面図Cutting front view of the same other embodiment 同実施形態の作用説明用切断正面図Front view of cutting for explaining the operation of the same embodiment 同さらに他の実施形態の切断正面図The same as yet another embodiment of the cut front view. 従来のスリーブ弁の一例の切断平面図Cutting plan view of an example of a conventional sleeve valve 同従来例の作用説明図Operation explanatory diagram of the conventional example 同従来例の作用説明図Operation explanatory diagram of the conventional example

この発明に係わるスリーブ弁の一実施形態を図１、図２に示し、この実施形態のインライン型スリーブ弁１０は、河川からの取水管の水平又は垂直な配管部等に取り付けられるものである。
このスリーブ弁１０は、図１に示すように、従来と同様に、円筒状弁箱１１の一端に流入配管１、他端に流出配管２がそれぞれ接続され、その弁箱１１内に、流入配管１側が閉塞されたシリンダ１２を同一軸に設け、そのシリンダ１２内に周壁一部が多孔（複数の弁孔）１３ｃのスリーブ弁体１３を同一軸上に移動可能に設けている。なお、切断平面は、図６とほぼ同一となる。 An embodiment of the sleeve valve according to the present invention is shown in FIGS. 1 and 2, and the in-line type sleeve valve 10 of this embodiment is attached to a horizontal or vertical piping portion of an intake pipe from a river.
As shown in FIG. 1, the sleeve valve 10 has an inflow pipe 1 connected to one end of the cylindrical valve box 11 and an outflow pipe 2 connected to the other end of the cylindrical valve box 11, and the inflow pipe is connected to the inside of the valve box 11. A cylinder 12 whose one side is closed is provided on the same shaft, and a sleeve valve body 13 having a perforated wall (plural valve holes) 13c is provided in the cylinder 12 so as to be movable on the same shaft. The cutting plane is almost the same as that in FIG.

弁箱１１とシリンダ１２は鋳造品や両者を溶接した等の一体物であり、そのシリンダ１２の先端（流入配管１側）は流線形に形成されて水の抵抗を減らしている。弁箱１１内に水ｗの流通方向に直交して弁軸１５が挿入されており、この弁軸１５は図示しないハンドルや駆動機によって回転される。 The valve box 11 and the cylinder 12 are a cast product or an integral body obtained by welding both of them, and the tip of the cylinder 12 (on the inflow pipe 1 side) is formed in a streamlined manner to reduce water resistance. A valve shaft 15 is inserted into the valve box 11 at right angles to the flow direction of the water w, and the valve shaft 15 is rotated by a handle or a drive device (not shown).

上記スリーブ弁体１３は円筒状であって、前側がシリンダ１２に嵌って摺動するガイド部１３ａと後側がその外周部に多数の弁孔１３ｃが螺旋状に配列された多孔部１３ｂとなっている。そのガイド部１３ａは多孔部１３ｂより大径となってその境が下り勾配の段差となってその下り勾配の段差がスリーブ弁体１３の弁座１４ａとなる。この弁座１４ａは、図２に示すように、スリーブ弁体１３の移動により同一傾斜面の弁箱弁座１４ｂに当接することによって、このスリーブ弁１０を閉弁する。 The sleeve valve body 13 has a cylindrical shape, and the front side is a guide portion 13a that fits into the cylinder 12 and slides, and the rear side is a perforated portion 13b in which a large number of valve holes 13c are spirally arranged on the outer peripheral portion thereof. There is. The guide portion 13a has a larger diameter than the porous portion 13b, the boundary thereof becomes a step with a downward slope, and the step with the downward slope becomes the valve seat 14a of the sleeve valve body 13. As shown in FIG. 2, the valve seat 14a closes the sleeve valve 10 by abutting on the valve box valve seat 14b having the same inclined surface by moving the sleeve valve body 13.

上記弁孔１３ｃはスリーブ弁体１３の軸心に向かって縮径する円錐台状をしており（図６～図８参照）、この円錐台状であることによって、円筒状孔（ストレート孔）に比べてキャビテーション抑制効果が高い。 The valve hole 13c has a truncated cone shape whose diameter is reduced toward the axis of the sleeve valve body 13 (see FIGS. 6 to 8), and the truncated cone shape provides a cylindrical hole (straight hole). The effect of suppressing cavitation is higher than that of.

上記弁軸１５にはその径方向（軸周り）のクランク１７ａが固着され、そのクランク１７ａの先端にコンロッド１７ｂが回転自在に連結されてリンク機構１７を構成している。コンロッド１７ｂの先端はスリーブ弁体１３のボス１８に回転自在に連結されている。このため、弁軸１５が回転すると、リンク機構１７を介してスリーブ弁体１３は流通方向前後（図１の左右）に移動する。
その移動に伴い、上記スリーブ弁体１３の各弁孔１３ｃがスリーブ弁体１３の軸方向移動で順々に開閉され、両弁座１４ａ、１４ｂが当接していない開弁時（図１の状態）、流入配管１からの水ｗが、弁箱１１内周面とシリンダ１２の外周面との間隙１６からその弁孔１３ｃを通ってスリーブ弁体１３内に流れ込んで流出配管２に流通する。 A crank 17a in the radial direction (around the axis) is fixed to the valve shaft 15, and a connecting rod 17b is rotatably connected to the tip of the crank 17a to form a link mechanism 17. The tip of the connecting rod 17b is rotatably connected to the boss 18 of the sleeve valve body 13. Therefore, when the valve shaft 15 rotates, the sleeve valve body 13 moves back and forth in the distribution direction (left and right in FIG. 1) via the link mechanism 17.
Along with the movement, each valve hole 13c of the sleeve valve body 13 is sequentially opened and closed by the axial movement of the sleeve valve body 13, and both valve seats 14a and 14b are not in contact with each other when the valve is opened (state of FIG. 1). ), The water w from the inflow pipe 1 flows into the sleeve valve body 13 through the valve hole 13c from the gap 16 between the inner peripheral surface of the valve box 11 and the outer peripheral surface of the cylinder 12, and flows to the outflow pipe 2.

以上の構成は従来と同様であり、この実施形態の特徴は、弁軸１５の軸心ｏが、すなわち、弁軸１５へのクランク１７ａの固定点（回転中心）が、弁箱１１の配管方向中心線ｃからみて、上記クランク１７ａとコンロッド１７ｂの連結点ａと同じ側にずれている（オフセットしている）とともに、コンロッド１７ｂが弁軸１５とは反対側に凸の弧状となっている点である。スリーブ弁体１３とコンロッド１７ｂとの連結転ｂは従来と同様に、弁箱１１の配管方向中心線ｃ上となっている。 The above configuration is the same as the conventional one, and the feature of this embodiment is that the axis o of the valve shaft 15, that is, the fixing point (rotation center) of the crank 17a to the valve shaft 15 is the piping direction of the valve box 11. When viewed from the center line c, the crank 17a and the connecting rod 17b are offset (offset) to the same side as the connection point a, and the connecting rod 17b has a convex arc shape on the opposite side to the valve shaft 15 . Is. The connection rolling b between the sleeve valve body 13 and the connecting rod 17b is on the piping direction center line c of the valve box 11 as in the conventional case.

そのずれている点によって、スラスト角θが小さくなって、上記分力Ｆ１も小さくなって、片当たりも軽減される。
また、クランク１７ａの回転エリアを大きくとることができるため、クランク１７ａの回転（作動）角度を拡大でき、スリーブ弁体１３の移動長さ（ストローク）の拡大を図ることができて、より精密な流量制御を行うことができる。
さらに、コンロッド１７ｂが弧状となっているため、スリーブ弁体１３の移動長さ（ストローク）を長くしても、コンロッド１７ｂが弁軸１５（クランク１７ａの支持ボス）に接触する恐れがない。 Due to the deviation point, the thrust angle θ becomes small, the component force F 1 also becomes small, and the one-sided contact is also reduced.
Further, since the rotation area of the crank 17a can be made large, the rotation (operation) angle of the crank 17a can be expanded, and the moving length (stroke) of the sleeve valve body 13 can be expanded, which is more precise. Flow control can be performed.
Further, since the connecting rod 17b has an arc shape, there is no possibility that the connecting rod 17b will come into contact with the valve shaft 15 (support boss of the crank 17a) even if the moving length (stroke) of the sleeve valve body 13 is lengthened.

上記実施形態は、スリーブ弁体１３が多数の弁孔１３ｃを有するものであったが、図３、図４に示すように、弁孔１３ｃを有しないスリーブ弁体１３とし得る。この実施形態のスリーブ弁１０は、同様に、弁軸１５が回転すると、リンク機構１７を介してスリーブ弁体１３は流通方向前後（同図の左右）に移動する。
その移動に伴い、スリーブ弁体１３先端の弁座１４ａと弁箱弁座１４ｂとの間隙度合いで流量制御又は圧力制御を行い、両弁座１４ａ、１４ｂの当接によって閉弁する（図３、図４参照）。 In the above embodiment, the sleeve valve body 13 has a large number of valve holes 13c, but as shown in FIGS. 3 and 4, the sleeve valve body 13 may have no valve holes 13c. Similarly, in the sleeve valve 10 of this embodiment, when the valve shaft 15 rotates, the sleeve valve body 13 moves back and forth in the distribution direction (left and right in the figure) via the link mechanism 17.
Along with the movement, flow rate control or pressure control is performed by the degree of gap between the valve seat 14a at the tip of the sleeve valve body 13 and the valve box valve seat 14b, and the valve is closed by the contact between the valve seats 14a and 14b (FIG. 3, FIG. See FIG. 4).

上記各実施形態は、弁軸１５をずらしたが、上記片当たりが軽減できれば、弁軸１５の軸心ｏ（クランク１７ａの固定点）及びスリーブ弁体１３とコンロッド１７ｂとの連結点ｂの何れかを弁箱１１の配管方向中心線ｃからずらした（オフセットした）ものとすることができる。例えば、上記実施形態以外に、図５に実線で示すように、弁軸１５は中心軸ｃ上とし、スリーブ弁体１３の配管方向弁軸１５側への移動量が最大の状態（全開状態）において、中心線ｃからみて、スリーブ弁体１３とコンロッド１７との連結点ｂを、クランク１７ａとコンロッド１７ｂの連結点ａとスリーブ弁体１３の径方向同じ側にずれている態様（図１において下側）としたり、上記実施形態とは異なり、連結点ｂを中心軸ｃ上とし、弁軸１５を連結点ａ側にずれている態様（図１において下側）としたり、弁軸１５の回転中心ｏはスリーブ弁体１３の径方向にずれて、スリーブ弁体１３とコンロッド１７ｂとの連結点ｂを、クランク１７とコンロッド１７の連結点ａとスリーブ弁体１３の径方向同じ側にずらすとともに弁軸１５の回転中心ｏと反対側にしたり等とすることができる。その各態様は、分力Ｆ１の大きさやクランク１７ａの回転エリアの大小等を考慮して適宜に選択する。 In each of the above embodiments, the valve shaft 15 is displaced, but if the one-sided contact can be reduced, either the axis o (fixed point of the crank 17a) of the valve shaft 15 or the connection point b between the sleeve valve body 13 and the connecting rod 17b. It can be assumed that the valve box 11 is offset (offset) from the piping direction center line c. For example, in addition to the above embodiment, as shown by the solid line in FIG. 5, the valve shaft 15 is on the central shaft c, and the amount of movement of the sleeve valve body 13 toward the pipe direction valve shaft 15 is the maximum (fully open state). In the embodiment, the connection point b between the sleeve valve body 13 and the connecting rod 17 is deviated from the center line c to the same side in the radial direction as the connection point a between the crank 17a and the connecting rod 17b and the sleeve valve body 13 (in FIG. 1). (Lower side), or unlike the above embodiment, the connecting point b is on the central axis c and the valve shaft 15 is displaced toward the connecting point a side (lower side in FIG. 1), or the valve shaft 15 The center of rotation o is displaced in the radial direction of the sleeve valve body 13, and the connection point b between the sleeve valve body 13 and the connecting rod 17b is shifted to the same side in the radial direction as the connection point a between the crank 17 and the connecting rod 17 and the sleeve valve body 13. At the same time, the valve shaft 15 may be located on the opposite side of the rotation center o . Each aspect is appropriately selected in consideration of the size of the component force F1, the size of the rotation area of the crank 17a, and the like.

このように、今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。この発明の範囲は、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 Thus, the embodiments disclosed this time should be considered to be exemplary and not restrictive in all respects. The scope of the present invention is indicated by the scope of claims and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

１ 流入配管
２ 流出配管
１０ スリーブ弁
１１ 弁箱
１２ シリンダ
１３ スリーブ弁体
１３ａ スリーブ弁体のガイド部
１３ｂ 同多孔部
１３ｃ 弁孔（多孔）
１４ａ スリーブ弁体側弁座
１４ｂ 弁箱側弁座
１５ 弁軸
１６ 間隙
１７ リンク機構
１７ａ クランク
１７ｂ コンロッド
１８ ボス
ａ クランクとコンロッドの連結点
ｂ スリーブ弁体とコンロッドとの連結点
ｃ 弁箱の配管方向中心線
ｏ 弁軸の回転軸心（クランクの弁軸への固定点）
θ スラスト角
ｗ 水（流体） 1 Inflow pipe 2 Outflow pipe 10 Sleeve valve 11 Valve box 12 Cylinder 13 Sleeve valve body 13a Sleeve valve body guide part 13b Same porous part 13c Valve hole (porous)
14a Sleeve valve body side valve seat 14b Valve box side valve seat 15 Valve shaft 16 Gap 17 Link mechanism 17a Crank 17b Connecting rod 18 Boss a Connection point between crank and connecting rod b Connection point between sleeve valve body and connecting rod c Center in valve box piping direction Wire o The center of rotation of the valve shaft (fixing point of the crank to the valve shaft)
θ Thrust angle w Water (fluid)

Claims (2)

筒状の弁箱（１１）の一端に流入配管（１）、他端に流出配管（２）がそれぞれ接続され、その弁箱（１１）内に、流入配管（１）側が閉塞されたシリンダ（１２）を同一軸に設け、そのシリンダ（１２）内にスリーブ弁体（１３）を下流側同一軸上に移動可能に設けたインライン型スリーブ弁（１０）であって、
上記弁箱（１１）にその配管方向の中心線（ｃ）上に横方向から挿入された弁軸（１５）と、上記スリーブ弁体（１３）とを、前記弁軸（１５）に固定されたクランク（１７ａ）と前記スリーブ弁体（１３）に回転自在に連結されたコンロッド（１７ｂ）とからなるリンク機構（１７）により連結し、前記弁軸（１５）の回転に基づき、前記リンク機構（１７）によって前記スリーブ弁体（１３）を上記同一軸上に移動させ、
かつ、スリーブ弁体（１３）の配管方向弁軸（１５）側への移動量が最大の状態において、上記弁箱（１１）の配管方向中心線（ｃ）からみて、上記スリーブ弁体（１３）とコンロッド（１７ｂ）との連結点（ｂ）を、上記クランク（１７ａ）とコンロッド（１７ｂ）の連結点（ａ）とスリーブ弁体（１３）の径方向同じ側にずらして、スリーブ弁体（１３）とシリンダ（１２）との片当たりを軽減するとともに、スリーブ弁体（１３）の移動長さの拡大を図り、
上記スリーブ弁体（１３）はその周壁に多数の弁孔（１３ｃ）を有して、そのスリーブ弁体（１３）の上記同一軸上の移動により、前記弁孔（１３ｃ）が順々に開閉されて、上記流入配管（１）からの水（ｗ）が、弁箱（１１）内周面とシリンダ（１２）の外周面との間隙（１６）から前記弁孔（１３ｃ）を通ってスリーブ弁体（１３）内に流れ込んで上記流出配管（２）に流通することを特徴とするスリーブ弁。 A cylinder (1) in which an inflow pipe (1) is connected to one end of a tubular valve box (11) and an outflow pipe (2) is connected to the other end, and the inflow pipe (1) side is closed in the valve box (11). An in-line type sleeve valve (10) provided with 12) on the same axis and a sleeve valve body (13) movably provided on the same axis on the downstream side in the cylinder (12).
The valve shaft (15) inserted laterally onto the center line (c) in the piping direction of the valve box (11) and the sleeve valve body (13) are fixed to the valve shaft (15). The link mechanism (17a) is connected by a link mechanism (17) including a crank (17a) and a connecting rod (17b) rotatably connected to the sleeve valve body (13), and the link mechanism is based on the rotation of the valve shaft (15). The sleeve valve body (13) is moved on the same axis by (17), and the sleeve valve body (13) is moved on the same axis.
In addition , when the amount of movement of the sleeve valve body (13) toward the pipe direction valve shaft (15) is maximum , the sleeve valve body (13) is viewed from the pipe direction center line (c) of the valve box (11). ) And the connecting point (b) of the connecting rod (17b) are shifted to the same side in the radial direction of the connecting point (a) of the crank (17a) and the connecting rod (17b) and the sleeve valve body (13). The one-sided contact between (13) and the cylinder (12) is reduced, and the moving length of the sleeve valve body (13) is increased.
The sleeve valve body (13) has a large number of valve holes (13c) on its peripheral wall, and the valve holes (13c) are sequentially opened and closed by the movement of the sleeve valve body (13) on the same axis. Then, the water (w) from the inflow pipe (1) passes through the valve hole (13c) from the gap (16) between the inner peripheral surface of the valve box (11) and the outer peripheral surface of the cylinder (12) and is sleeved. A sleeve valve characterized in that it flows into the valve body (13) and flows to the outflow pipe (2). 筒状の弁箱（１１）の一端に流入配管（１）、他端に流出配管（２）がそれぞれ接続され、その弁箱（１１）内に、流入配管（１）側が閉塞されたシリンダ（１２）を同一軸に設け、そのシリンダ（１２）内にスリーブ弁体（１３）を下流側同一軸上に移動可能に設けたインライン型スリーブ弁（１０）であって、
上記弁箱（１１）に横方向から挿入された弁軸（１５）と、上記スリーブ弁体（１３）とを、前記弁軸（１５）に固定されたクランク（１７ａ）と前記スリーブ弁体（１３）に回転自在に連結されたコンロッド（１７ｂ）とからなるリンク機構（１７）により連結し、弁軸（１５）の回転中心（ｏ）はスリーブ弁体（１３）の径方向にずれて、前記弁軸（１５）の回転に基づき、前記リンク機構（１７）によって前記スリーブ弁体（１３）を上記同一軸上に移動させ、
かつ、スリーブ弁体（１３）の配管方向弁軸（１５）側への移動量が最大の状態において、上記弁箱（１１）の配管方向中心線（ｃ）からみて、上記スリーブ弁体（１３）とコンロッド（１７ｂ）との連結点（ｂ）を、上記クランク（１７ａ）とコンロッド（１７ｂ）の連結点（ａ）とスリーブ弁体（１３）の径方向同じ側にずらすとともに弁軸（１５）の回転中心（ｏ）と反対側にして、スリーブ弁体（１３）とシリンダ（１２）との片当たりを軽減するとともに、スリーブ弁体（１３）の移動長さの拡大を図り、
上記スリーブ弁体（１３）はその周壁に多数の弁孔（１３ｃ）を有して、そのスリーブ弁体（１３）の上記同一軸上の移動により、前記弁孔（１３ｃ）が順々に開閉されて、上記流入配管（１）からの水（ｗ）が、弁箱（１１）内周面とシリンダ（１２）の外周面との間隙（１６）から前記弁孔（１３ｃ）を通ってスリーブ弁体（１３）内に流れ込んで上記流出配管（２）に流通することを特徴とするスリーブ弁。 A cylinder (1) in which an inflow pipe (1) is connected to one end of a tubular valve box (11) and an outflow pipe (2) is connected to the other end, and the inflow pipe (1) side is closed in the valve box (11). An in-line type sleeve valve (10) provided with 12) on the same axis and a sleeve valve body (13) movably provided on the same axis on the downstream side in the cylinder (12).
The valve shaft (15) inserted laterally into the valve box (11) and the sleeve valve body (13) are connected to the crank (17a) and the sleeve valve body (17a) fixed to the valve shaft (15). It is connected by a link mechanism (17) composed of a connecting rod (17b) rotatably connected to 13), and the rotation center (o) of the valve shaft (15) is displaced in the radial direction of the sleeve valve body (13). Based on the rotation of the valve shaft (15), the sleeve valve body (13) is moved on the same shaft by the link mechanism (17).
In addition , when the amount of movement of the sleeve valve body (13) toward the pipe direction valve shaft (15) is maximum , the sleeve valve body (13) is viewed from the pipe direction center line (c) of the valve box (11). ) And the connecting point (b) of the connecting rod (17b) are shifted to the same side in the radial direction of the connecting point (a) of the crank (17a) and the connecting rod (17b) and the sleeve valve body (13), and the valve shaft ( 17b). On the side opposite to the center of rotation (o) of 15), the one-sided contact between the sleeve valve body (13) and the cylinder (12) is reduced, and the moving length of the sleeve valve body (13) is increased.
The sleeve valve body (13) has a large number of valve holes (13c) on its peripheral wall, and the valve holes (13c) are sequentially opened and closed by the movement of the sleeve valve body (13) on the same axis. Then, the water (w) from the inflow pipe (1) passes through the valve hole (13c) from the gap (16) between the inner peripheral surface of the valve box (11) and the outer peripheral surface of the cylinder (12) and is sleeved. A sleeve valve characterized in that it flows into the valve body (13) and flows to the outflow pipe (2).
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