JP2019157943A - Water amount control valve - Google Patents

Water amount control valve Download PDF

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JP2019157943A
JP2019157943A JP2018042970A JP2018042970A JP2019157943A JP 2019157943 A JP2019157943 A JP 2019157943A JP 2018042970 A JP2018042970 A JP 2018042970A JP 2018042970 A JP2018042970 A JP 2018042970A JP 2019157943 A JP2019157943 A JP 2019157943A
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axial direction
valve
guide member
ring
support portion
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JP7000209B2 (en
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雄 岡野
Yu Okano
雄 岡野
久之 杉浦
Hisayuki Sugiura
久之 杉浦
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Rinnai Corp
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Rinnai Corp
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Abstract

To provide a water amount control valve having a valve body 2 that is driven by an electric actuator 4 through a valve rod 3 in an axial direction comprising a first guide member 5 having a first supporting part 51 slidably supporting the valve rod 3 in an axial direction at a part near an axial direction; a second guide member 6 having a second supporting part 61 slidably supporting the valve rod 3 in the axial direction at a part near the other axial direction; and an O-ring 7 arranged between the first supporting part 51 and the second supporting part 61 in which the O-ring 7 can be prevented from being pulled off and an inclination of the valve rod 3 can be positively prevented.SOLUTION: A first guide member 5 is formed with an O-ring groove 52 that is adjacent to the other axial part of a first supporting part 51 and also formed with a step part 53 positioned at the other end part in the axial direction of the O-ring groove 52. A second guide member 6 is made as a separate one from a valve casing 1 and a second guide member 6 is formed with a press-holding part 62 for press holding and fixing a washer 72 for stop-holding O-ring 7 between it and the step part 53 of the first guide member 5.SELECTED DRAWING: Figure 1

Description

本発明は、給湯器等で使用する水量調節弁に関する。   The present invention relates to a water amount adjustment valve used in a water heater or the like.

従来、この種の水量調節弁は、一般的に、入水ポートと、出水ポートと、入水ポートと出水ポートの一方に連通する内部の弁室と、弁室の軸方向一方の端部に位置し、入水ポートと出水ポートの他方に連通する弁孔が開設された弁座とを有するバルブケーシングと、弁室内に設けられた軸方向一方と他方に移動自在な弁体と、弁体から軸方向他方にのびる弁棒と、弁体を軸方向一方と他方に弁棒を介して移動させる電動アクチュエータとを備えている。また、弁棒を軸方向一方寄りの部分で軸方向に摺動自在に支持する第１支持部を有する第１ガイド部材と、弁棒を軸方向他方寄りの部分で軸方向に摺動自在に支持する第２支持部を有する第２ガイド部材とを設け、弁棒を軸方向に離れた２箇所で支持することにより弁棒の傾きを防止し、弁体が傾くことなく軸方向に直進するようにしたものも知られている(例えば、特許文献１参照)。更に、このものでは、第１支持部と第２支持部との間に、弁棒が摺動自在に貫通するＯリングを設けて、シール性を確保している。   Conventionally, this type of water amount control valve is generally located at a water inlet port, a water outlet port, an internal valve chamber communicating with one of the water inlet port and the water outlet port, and one axial end of the valve chamber. A valve casing having a valve seat having a valve hole communicating with the other one of the water inlet port and the water outlet port, a valve body provided in the valve chamber that is movable in one direction and the other, and an axial direction from the valve body A valve rod extending to the other side and an electric actuator for moving the valve body in one axial direction and the other through the valve rod are provided. In addition, a first guide member having a first support portion that slidably supports the valve stem in the axial direction at a portion closer to the axial direction, and a valve rod slidable in the axial direction at the portion closer to the axial direction. And a second guide member having a second support portion for supporting the valve stem by supporting the valve stem at two locations separated in the axial direction to prevent the valve stem from tilting, and the valve body moves straight in the axial direction without tilting. Such a configuration is also known (for example, see Patent Document 1). Further, in this device, an O-ring through which the valve rod slidably passes is provided between the first support portion and the second support portion to ensure sealing performance.

ところで、特許文献１に記載のものでは、バルブケーシングに第２ガイド部材を一体成形すると共に、バルブケーシングに、弁室から軸方向他方に向けて第２ガイド部材の手前までのびる凹孔を形成し、この凹孔に、Ｏリングを装着すると共にリング状の第１ガイド部材を圧入している。これによれば、Ｏリングは、凹孔の軸方向他方の端部で軸方向他方に抜け止めされ、第１ガイド部材によって軸方向一方に抜け止めされる。   By the way, in the thing of patent document 1, while forming the 2nd guide member integrally in a valve casing, the concave hole extended in the valve casing from the valve chamber toward the other side of an axial direction to the near side of the 2nd guide member is formed. The O-ring is attached to the concave hole, and the ring-shaped first guide member is press-fitted. According to this, the O-ring is prevented from coming off in the other axial direction at the other end in the axial direction of the concave hole, and is prevented from coming off in one axial direction by the first guide member.

然し、このものでは、リング状の第１ガイド部材を凹孔に圧入する際に、第１ガイド部材が変形することがあり、この変形によって弁棒が傾いて、水量調節の精度が悪くなることがある。   However, in this case, when the ring-shaped first guide member is press-fitted into the concave hole, the first guide member may be deformed, and the valve rod is tilted by this deformation, and the accuracy of water amount adjustment is deteriorated. There is.

特開２００９−３０６９６号公報（図１、図３）JP 2009-30696 A (FIGS. 1 and 3)

本発明は、以上の点に鑑み、Ｏリングを抜け止めして、且つ、弁棒の傾きを確実に防止できるようにした水量調節弁を提供することをその課題としている。   In view of the above points, an object of the present invention is to provide a water amount adjusting valve that prevents the O-ring from coming off and that can reliably prevent the inclination of the valve stem.

上記課題を解決するために、本発明は、入水ポートと、出水ポートと、入水ポートと出水ポートの一方に連通する内部の弁室と、弁室の軸方向一方の端部に位置し、入水ポートと出水ポートの他方に連通する弁孔が開設された弁座とを有するバルブケーシングと、弁室内に設けられた軸方向一方と他方に移動自在な弁体と、弁体から軸方向他方にのびる弁棒と、弁体を軸方向一方と他方に弁棒を介して移動させる電動アクチュエータと、弁棒を軸方向一方寄りの部分で軸方向に摺動自在に支持する第１支持部を有する第１ガイド部材と、弁棒を軸方向他方寄りの部分で軸方向に摺動自在に支持する第２支持部を有する第２ガイド部材と、第１支持部と第２支持部との間に設けられた、弁棒が摺動自在に貫通するＯリングとを備える水量調節弁において、第１ガイド部材に、第１支持部の軸方向他方に隣接させて、Ｏリングを装着する内径が第１支持部より大きなＯリング溝が形成されると共に、Ｏリング溝の軸方向他方の端部に位置させて、軸方向他方を向く段差部が形成され、この段差部に着座させて、Ｏリング溝からＯリングが軸方向他方に抜け出ることを阻止する抜け止め用座金が設けられ、第２ガイド部材をバルブケーシングと別体として、第２ガイド部材に、抜け止め用座金を第１ガイド部材の段差部との間に挟圧固定する挟圧部が形成されることを特徴とする。   In order to solve the above-described problems, the present invention provides a water inlet port, a water outlet port, an internal valve chamber communicating with one of the water inlet port and the water outlet port, and one axial end of the valve chamber. A valve casing having a valve seat having a valve hole communicating with the other of the port and the water discharge port, a valve body provided in the valve chamber and movable in one axial direction and the other, and from the valve body to the other axial direction A valve stem that extends, an electric actuator that moves the valve body in one axial direction and the other through the valve stem, and a first support portion that slidably supports the valve stem in the axial direction at a portion closer to the axial direction. Between the first guide member, the second guide member having a second support portion that slidably supports the valve stem in the axial direction at a portion closer to the other axial direction, and between the first support portion and the second support portion A water amount adjusting valve provided with an O-ring through which a valve rod slidably passes. In the first guide member, an O-ring groove having an inner diameter larger than that of the first support portion is formed adjacent to the other axial direction of the first support portion, and the O-ring groove is axially disposed. A stepped portion that is positioned at the other end and facing the other in the axial direction is formed, and a retaining washer that prevents the O-ring from slipping out from the O-ring groove to the other in the axial direction by being seated on this stepped portion is provided. The second guide member is separate from the valve casing, and a clamping portion for clamping and fixing the retaining washer between the step portion of the first guide member is formed on the second guide member. And

本発明によれば、Ｏリングは、第１ガイド部材の段差部と第２ガイド部材の挟圧部との間に挟圧固定される抜け止め用座金により軸方向他方に抜け止めされ、また、Ｏリング溝の軸方向一方の端部に、これより内径の小さな第１支持部との間の段差部を生ずるため、この段差部によりＯリングが軸方向一方に抜け止めされる。従って、第１ガイド部材及び第２ガイド部材をＯリングの抜け止めのためにバルブケーシングに圧入する必要がなく、これらガイド部材が圧入時に作用する無理な応力で変形することもない。その結果、第１と第２のガイド部材に設けられる第１と第２の両支持部で弁棒を同心になるように支持でき、弁棒の傾きを確実に防止できる。   According to the present invention, the O-ring is prevented from coming off in the other axial direction by a retaining washer that is clamped and fixed between the stepped portion of the first guide member and the pinched portion of the second guide member. Since a step portion between the O-ring groove and the first support portion having a smaller inner diameter is formed at one end portion in the axial direction, the O-ring is prevented from coming off in one axial direction by the step portion. Therefore, it is not necessary to press-fit the first guide member and the second guide member into the valve casing in order to prevent the O-ring from coming off, and the guide members are not deformed by an unreasonable stress acting during press-fitting. As a result, the valve stem can be supported concentrically by both the first and second support portions provided on the first and second guide members, and the tilt of the valve stem can be reliably prevented.

ところで、第１ガイド部材はバルブケーシングに一体成形してもよいが、第１ガイド部材をバルブケーシングと別体とすることも可能である。この場合、バルブケーシングは、弁室から軸方向他方にのび、内周面に軸方向他方を向く段差部を備える筒部を有するものとし、この筒部に、バルブケーシングと別体の筒状で、外周面に筒部の段差部に当接する軸方向一方を向く段差部を有する第１ガイド部材を外周面に第２のＯリングを装着した状態で内挿し、第１ガイド部材の軸方向一方の端面に、第１支持部の一部として機能する、弁室内に突出する筒状突起を設けることが望ましい。これによれば、第１ガイド部材をバルブケーシングに圧入しなくても、第２ガイド部材の挟圧部から抜け止め用座金を介して第１ガイド部材に作用する軸方向一方への押圧力で、第１ガイド部材の外周面の段差部がバルブケーシングの筒部内周面の段差部に当接した状態に維持され、第１ガイド部材をバルブケーシングに対し固定できる。更に、第１ガイド部材の筒状突起により、第１支持部が長くなり、弁棒の第１支持部における支持を確実にすることができる。また、第１支持部の軸方向他方に隣接するＯリング溝内のＯリングに触れる水が頻繁に入れ替わると、水に含まれる塩素の影響でＯリングの耐久性が悪化するが、第１支持部が長くなることで、Ｏリングに触れる水が入れ替わりにくくなり、Ｏリングの耐久性が向上する。   By the way, the first guide member may be integrally formed with the valve casing, but the first guide member may be separated from the valve casing. In this case, the valve casing has a cylindrical portion extending from the valve chamber in the other axial direction and having a stepped portion on the inner peripheral surface facing the other axial direction, and the cylindrical portion has a cylindrical shape separate from the valve casing. The first guide member having a step portion facing in the axial direction that contacts the step portion of the cylindrical portion on the outer peripheral surface is inserted with the second O-ring attached to the outer peripheral surface, and one axial direction of the first guide member is inserted. It is desirable to provide a cylindrical projection that protrudes into the valve chamber and functions as a part of the first support portion on the end surface of the first support portion. According to this, even if the first guide member is not press-fitted into the valve casing, a pressing force in one axial direction acting on the first guide member from the clamping portion of the second guide member via the retaining washer is provided. The step portion on the outer peripheral surface of the first guide member is maintained in contact with the step portion on the inner peripheral surface of the tubular portion of the valve casing, and the first guide member can be fixed to the valve casing. Further, the cylindrical support protrusion of the first guide member lengthens the first support portion, and the support of the valve stem at the first support portion can be ensured. Moreover, if the water touching the O-ring in the O-ring groove adjacent to the other axial direction of the first support portion is frequently replaced, the durability of the O-ring deteriorates due to the influence of chlorine contained in the water. As the portion becomes longer, the water that touches the O-ring becomes difficult to change, and the durability of the O-ring is improved.

本発明の実施形態の水量調節弁の切断側面図。The cut | disconnection side view of the water quantity adjustment valve of embodiment of this invention.

図１を参照して、本発明の実施形態の水量調節弁は、入水ポート１１と、出水ポート１２と、出水ポート１２に連通する内部の弁室１３と、弁室１３の軸方向一方（図１の下方）の端部に位置し、入水ポート１１に連通する弁孔１４１が開設された弁座１４とを有するバルブケーシング１を備えている。バルブケーシング１は、更に、弁室１３から軸方向他方（図１の上方）にのび、内周面に軸方向他方を向く段差部１５１を備える筒部１５を有している。   Referring to FIG. 1, a water amount adjusting valve according to an embodiment of the present invention includes a water inlet port 11, a water outlet port 12, an internal valve chamber 13 communicating with the water outlet port 12, and one axial direction of the valve chamber 13 (FIG. And a valve casing 1 having a valve seat 14 in which a valve hole 141 communicating with the water inlet port 11 is opened. The valve casing 1 further includes a cylindrical portion 15 provided with a step portion 151 extending from the valve chamber 13 in the other axial direction (upward in FIG. 1) and facing the other axial direction on the inner peripheral surface.

また、水量調節弁は、弁室１３内に設けられた軸方向一方と他方に移動自在な弁体２と、弁体２から軸方向他方にのびる弁棒３と、弁体２を軸方向一方と他方に弁棒３を介して移動させる電動アクチュエータ４とを備えている。電動アクチュエータ４は、モータ４１と、モータ４１の回転運動を弁棒３の軸方向運動に変換する送りねじ機構とで構成されている。この送りねじ機構は、モータ４１の出力軸４１ａに相対回転不能に、且つ、軸方向に摺動自在に係合する連結子４２と、後述する第２ガイド部材６に形成した雌ネジ４３に螺合する連結子４２に一体の雄ネジ４４と、雄ネジ４４の軸方向一方の端部と弁棒３の軸方向他方の端部に形成した大径の頭部３１との間に介設したボール４５と、弁棒３を軸方向他方に付勢するバネ４６とを備えており、モータ４１の回転で雄ネジ４４が軸方向に進退し、これに追従して弁棒３が軸方向に進退する。そして、弁棒３と一体に弁体２が軸方向に進退することで、弁体２と弁座１４との間の距離が変化し、水量が可変調節される。尚、バネ４６は、弁棒３の頭部３１と後述する抜け止め用座金７２との間に縮設されている。   The water amount adjusting valve includes a valve body 2 provided in the valve chamber 13 that is movable in one axial direction and the other, a valve rod 3 extending from the valve body 2 to the other axial direction, and the valve body 2 in one axial direction. And an electric actuator 4 to be moved through the valve rod 3 on the other side. The electric actuator 4 includes a motor 41 and a feed screw mechanism that converts the rotational motion of the motor 41 into the axial motion of the valve rod 3. This feed screw mechanism is screwed onto a connector 42 that is non-rotatably engaged with the output shaft 41a of the motor 41 and slidable in the axial direction, and a female screw 43 formed on the second guide member 6 described later. A male screw 44 integral with the connector 42 to be joined, and a large-diameter head portion 31 formed at one axial end of the male screw 44 and the other axial end of the valve stem 3 are interposed. A ball 45 and a spring 46 that urges the valve stem 3 in the other axial direction are provided. The rotation of the motor 41 causes the male screw 44 to advance and retract in the axial direction. Advance and retreat. The distance between the valve body 2 and the valve seat 14 changes as the valve body 2 advances and retracts in the axial direction integrally with the valve stem 3, and the amount of water is variably adjusted. The spring 46 is contracted between the head 31 of the valve stem 3 and a retaining washer 72 described later.

水量調節弁は、更に、弁棒３を軸方向一方寄りの部分で軸方向に摺動自在に支持する第１支持部５１を有する第１ガイド部材５と、弁棒３を軸方向他方寄りの部分で軸方向に摺動自在に支持する第２支持６１部を有する第２ガイド部材６と、第１支持部５１と第２支持部６１との間に設けられた、弁棒３が摺動自在に貫通するＯリング７とを備えている。第１支持部５１は、弁棒３の軸方向一方寄りの部分が摺接する第１ガイド部材５の内周面で構成され、第２支持部６１は、弁棒３の頭部３１が摺接する第２ガイド部材６の内周面で構成されている。   The water amount adjusting valve further includes a first guide member 5 having a first support portion 51 that slidably supports the valve rod 3 in the axial direction at a portion closer to the axial direction, and the valve rod 3 closer to the other axial direction. A second guide member 6 having a second support 61 that is slidably supported in the axial direction at a portion, and a valve stem 3 provided between the first support 51 and the second support 61 slides. An O-ring 7 penetrating freely is provided. The first support portion 51 is configured by the inner peripheral surface of the first guide member 5 that is in sliding contact with a portion closer to the axial direction of the valve stem 3, and the second support portion 61 is in sliding contact with the head portion 31 of the valve stem 3. The inner peripheral surface of the second guide member 6 is configured.

また、第１ガイド部材５には、第１支持部５１の軸方向他方に隣接させて、内径が第１支持部５１より大きなＯリング溝５２が形成されると共に、Ｏリング溝５２の軸方向他方の端部に位置させて、軸方向他方を向く段差部５３が形成されている。そして、Ｏリング溝５２にＯリング７をその軸方向他方にワッシャ７１を重ねた状態で装着し、段差部５３に、Ｏリング溝５２からワッシャ７１及びＯリング７が軸方向他方に抜け出ることを阻止する抜け止め用座金７２を着座させている。   In addition, an O-ring groove 52 having an inner diameter larger than that of the first support portion 51 is formed in the first guide member 5 so as to be adjacent to the other axial direction of the first support portion 51. A stepped portion 53 is formed that is positioned at the other end and faces the other in the axial direction. Then, the O-ring 7 is attached to the O-ring groove 52 in a state where the washer 71 is overlapped on the other side in the axial direction, and the washer 71 and the O-ring 7 are pulled out from the O-ring groove 52 to the other side in the axial direction. A retaining washer 72 for blocking is seated.

第２ガイド部材６は、バルブケーシング１と別体の筒状としている。そして、第２ガイド部材６に、その軸方向一方の端部に位置させて、抜け止め用座金７２を第１ガイド部材５の段差部５３との間に挟圧固定する挟圧部６２を形成している。第２ガイド部材６の軸方向他方の端部には、バルブケーシング１の筒部１５の軸方向他方の端面に着座してこれに締結されるフランジ部６３が設けられ、このフランジ部６３の外面にモータ４１が搭載されている。   The second guide member 6 has a cylindrical shape separate from the valve casing 1. Then, a pinching portion 62 is formed on the second guide member 6 so as to be pinched and fixed between the stepped portion 53 of the first guide member 5 and positioned at one end portion in the axial direction. is doing. A flange portion 63 is provided at the other axial end of the second guide member 6 so as to be seated on and fastened to the other axial end surface of the cylindrical portion 15 of the valve casing 1. A motor 41 is mounted.

以上の構成によれば、Ｏリング７は、第１ガイド部材５の段差部５３と第２ガイド部材６の挟圧部６２との間に挟圧固定される抜け止め用座金７２により軸方向他方に抜け止めされ、また、Ｏリング溝５２の軸方向一方の端部に、これより内径の小さな第１支持部５１との間の段差部５４を生ずるため、この段差部５４によりＯリング７が軸方向一方に抜け止めされる。従って、第１ガイド部材５及び第２ガイド部材６をＯリング７の抜け止めのためにバルブケーシング１に圧入する必要がなく、これらガイド部材５，６が圧入時に作用する無理な応力で変形することもない。その結果、第１と第２のガイド部材５，６に設けられる第１と第２の両支持部５１，６１で弁棒３を同心になるように支持でき、弁棒３の傾きを確実に防止できる。   According to the above configuration, the O-ring 7 is axially connected to the other end in the axial direction by the retaining washer 72 that is clamped and fixed between the stepped portion 53 of the first guide member 5 and the clamping portion 62 of the second guide member 6. In addition, a stepped portion 54 is formed at one end of the O-ring groove 52 in the axial direction with respect to the first support portion 51 having a smaller inner diameter than the O-ring groove 52. It is secured to one side in the axial direction. Therefore, it is not necessary to press-fit the first guide member 5 and the second guide member 6 into the valve casing 1 to prevent the O-ring 7 from coming off, and the guide members 5 and 6 are deformed by an unreasonable stress acting during press-fitting. There is nothing. As a result, the first and second support portions 51 and 61 provided on the first and second guide members 5 and 6 can support the valve stem 3 so as to be concentric, and the inclination of the valve stem 3 can be reliably ensured. Can be prevented.

ところで、第１ガイド部材５は、バルブケーシング１に一体成形することも可能であるが、本実施形態では、第１ガイド部材５をバルブケーシング１と別体としている。即ち、第１ガイド部材５は、バルブケーシング１と別体の筒状であって、外周面にバルブケーシング１の筒部１５の段差部１５１に当接する軸方向一方を向く段差部５５を有している。そして、第１ガイド部材５を外周面に第２のＯリング８を装着した状態で筒部１５に内挿している。これによれば、第１ガイド部材５をバルブケーシング１に圧入しなくても、第２ガイド部材６の挟圧部６２から抜け止め用座金７２を介して第１ガイド部材５に作用する軸方向一方への押圧力で、第１ガイド部材５の外周面の段差部５５がバルブケーシング１の筒部１５内周面の段差部１５１に当接した状態に維持され、第１ガイド部材５をバルブケーシング１に対し固定できる。尚、本実施形態では、第２ガイド部材６の外周面に、第１ガイド部材５の軸方向他方の端面に当接する段差部６４を形成して、この段差部６４によっても第１ガイド部材５が軸方向一方に押圧されるようにしているが、この段差部６４は省略してもよい。   By the way, although the 1st guide member 5 can also be integrally molded in the valve casing 1, in this embodiment, the 1st guide member 5 is made into the valve casing 1 and the different body. That is, the first guide member 5 has a cylindrical shape that is separate from the valve casing 1, and has a stepped portion 55 that faces the stepped portion 151 of the tubular portion 15 of the valve casing 1 and faces one axial direction on the outer peripheral surface. ing. And the 1st guide member 5 is inserted in the cylinder part 15 in the state which attached the 2nd O-ring 8 to the outer peripheral surface. According to this, even if the first guide member 5 is not press-fitted into the valve casing 1, the axial direction acts on the first guide member 5 from the pinching portion 62 of the second guide member 6 via the retaining washer 72. Due to the pressing force to one side, the stepped portion 55 on the outer peripheral surface of the first guide member 5 is maintained in contact with the stepped portion 151 on the inner peripheral surface of the tubular portion 15 of the valve casing 1, and the first guide member 5 is It can be fixed to the casing 1. In the present embodiment, a stepped portion 64 that contacts the other end surface in the axial direction of the first guide member 5 is formed on the outer peripheral surface of the second guide member 6, and the first guide member 5 is also formed by the stepped portion 64. However, the stepped portion 64 may be omitted.

また、本実施形態では、第１ガイド部材５の軸方向一方の端面に、第１支持部５１の一部として機能する、弁室１３内に突出する筒状突起５６を設けている。これによれば、筒状突起５６により、第１支持部５１が長くなり、弁棒３の第１支持部５１における支持を確実にすることができる。また、第１支持部５１の軸方向他方に隣接するＯリング溝５２内のＯリング７に触れる水が頻繁に入れ替わると、水に含まれる塩素の影響でＯリング７の耐久性が悪化するが、第１支持部５１が長くなることで、Ｏリング７に触れる水が入れ替わりにくくなり、Ｏリング７の耐久性が向上する。   In the present embodiment, a cylindrical protrusion 56 that projects into the valve chamber 13 and functions as a part of the first support portion 51 is provided on one end surface in the axial direction of the first guide member 5. According to this, the 1st support part 51 becomes long with the cylindrical protrusion 56, and the support in the 1st support part 51 of the valve stem 3 can be ensured. In addition, if the water touching the O-ring 7 in the O-ring groove 52 adjacent to the other of the first support portions 51 in the axial direction is frequently replaced, the durability of the O-ring 7 deteriorates due to the influence of chlorine contained in the water. As the first support portion 51 becomes longer, the water that touches the O-ring 7 becomes difficult to be replaced, and the durability of the O-ring 7 is improved.

以上、本発明の実施形態について図面を参照して説明したが、本発明はこれに限定されない。例えば、上記実施形態では、弁室１３が出水ポート１２に連通し、弁孔１４１が入水ポート１１に連通しているが、入水ポート１１と出水ポート１２とを夫々出水ポートと入水ポートとし、入水ポートに弁室１３を連通させ、出水ポートに弁孔１４１を連通させることも可能である。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above embodiment, the valve chamber 13 communicates with the water inlet port 12 and the valve hole 141 communicates with the water inlet port 11. However, the water inlet port 11 and the water outlet port 12 serve as the water outlet port and the water inlet port, respectively. The valve chamber 13 can be communicated with the port, and the valve hole 141 can be communicated with the water discharge port.

１…バルブケーシング、１１…入水ポート、１２…出水ポート、１３…弁室、１４…弁座、１４１…弁孔、１５…筒部、１５１…筒部の内周面の段差部、２…弁体、３…弁棒、４…電動アクチュエータ、５…第１ガイド部材、５１…第１支持部、５２…Ｏリング溝、５３…Ｏリング溝の軸方向他方の端部の段差部、５５…第１ガイド部材の外周面の段差部、５６…筒状突起、６…第２ガイド部材、６１…第２ガイド部、６２…挟圧部、７…Ｏリング、８…第２のＯリング。
DESCRIPTION OF SYMBOLS 1 ... Valve casing, 11 ... Inlet port, 12 ... Outlet port, 13 ... Valve chamber, 14 ... Valve seat, 141 ... Valve hole, 15 ... Tube part, 151 ... Level difference part of inner peripheral surface of cylinder part, 2 ... Valve Body, 3 ... Valve rod, 4 ... Electric actuator, 5 ... First guide member, 51 ... First support portion, 52 ... O-ring groove, 53 ... Stepped portion at the other end in the axial direction of the O-ring groove, 55 ... Step portion on the outer peripheral surface of the first guide member, 56... Cylindrical projection, 6... Second guide member, 61... Second guide portion, 62.

Claims (2)

入水ポートと、出水ポートと、入水ポートと出水ポートの一方に連通する内部の弁室と、弁室の軸方向一方の端部に位置し、入水ポートと出水ポートの他方に連通する弁孔が開設された弁座とを有するバルブケーシングと、弁室内に設けられた軸方向一方と他方に移動自在な弁体と、弁体から軸方向他方にのびる弁棒と、弁体を軸方向一方と他方に弁棒を介して移動させる電動アクチュエータと、弁棒を軸方向一方寄りの部分で軸方向に摺動自在に支持する第１支持部を有する第１ガイド部材と、弁棒を軸方向他方寄りの部分で軸方向に摺動自在に支持する第２支持部を有する第２ガイド部材と、第１支持部と第２支持部との間に設けられた、弁棒が摺動自在に貫通するＯリングとを備える水量調節弁において、
第１ガイド部材に、第１支持部の軸方向他方に隣接させて、Ｏリングを装着する内径が第１支持部より大きなＯリング溝が形成されると共に、Ｏリング溝の軸方向他方の端部に位置させて、軸方向他方を向く段差部が形成され、この段差部に着座させて、Ｏリング溝からＯリングが軸方向他方に抜け出ることを阻止する抜け止め用座金が設けられ、第２ガイド部材をバルブケーシングと別体として、第２ガイド部材に、抜け止め用座金を第１ガイド部材の段差部との間に挟圧固定する挟圧部が形成されることを特徴とする水量調節弁。 A water inlet port, a water outlet port, an internal valve chamber that communicates with one of the water inlet port and the water outlet port, and a valve hole that is located at one end in the axial direction of the valve chamber and communicates with the other of the water inlet port and the water outlet port. A valve casing having an established valve seat, a valve body provided in the valve chamber that is movable in one axial direction and the other, a valve rod extending from the valve body to the other axial direction, and a valve body in one axial direction An electric actuator that moves the valve rod to the other side, a first guide member that has a first support portion that slidably supports the valve rod in the axial direction at a portion closer to the axial direction, and the other in the axial direction. A second guide member having a second support portion that is slidably supported in the axial direction at the close portion, and a valve rod provided between the first support portion and the second support portion slidably penetrates. A water amount adjusting valve comprising an O-ring
An O-ring groove having an inner diameter larger than that of the first support portion is formed on the first guide member adjacent to the other axial direction of the first support portion, and the other end in the axial direction of the O-ring groove is formed. A stepped portion facing the other in the axial direction is formed, and a retaining washer for preventing the O-ring from slipping out from the O-ring groove to the other in the axial direction is provided. 2. A water amount, wherein the guide member is separated from the valve casing, and the second guide member is formed with a clamping portion for clamping and fixing the retaining washer between the step portion of the first guide member. Control valve. バルブケーシングは、弁室から軸方向他方にのび、内周面に軸方向他方を向く段差部を備える筒部を有し、この筒部に、バルブケーシングと別体の筒状で、外周面に筒部の段差部に当接する軸方向一方を向く段差部を有する第１ガイド部材が外周面に第２のＯリングを装着した状態で内挿され、第１ガイド部材の軸方向一方の端面に、第１支持部の一部として機能する、弁室内に突出する筒状突起が設けられることを特徴とする請求項１記載の水量調節弁。
The valve casing has a cylindrical portion extending from the valve chamber to the other axial direction and having a stepped portion facing the other axial direction on the inner peripheral surface. The cylindrical portion is a separate cylinder from the valve casing, and is formed on the outer peripheral surface. A first guide member having a stepped portion facing in the axial direction that contacts the stepped portion of the cylindrical portion is inserted in a state where the second O-ring is mounted on the outer peripheral surface, and is attached to one axial end surface of the first guide member. The water amount adjusting valve according to claim 1, further comprising a cylindrical protrusion that functions as a part of the first support portion and protrudes into the valve chamber.
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WO2021039949A1 (en) 2019-08-30 2021-03-04 富士フイルム株式会社 Inorganic solid electrolyte-containing composition, sheet for all-solid-state secondary battery, all-solid-state secondary battery, and methods for manufacturing sheet for all-solid-state secondary battery and all-solid-state secondary battery
CN112145718A (en) * 2020-09-22 2020-12-29 南通龙源电站阀门有限公司 Valve structure for low-pressure pipeline of thermal power plant

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