JP6682061B1 - Packing type check valve - Google Patents
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- JP6682061B1 JP6682061B1 JP2019076178A JP2019076178A JP6682061B1 JP 6682061 B1 JP6682061 B1 JP 6682061B1 JP 2019076178 A JP2019076178 A JP 2019076178A JP 2019076178 A JP2019076178 A JP 2019076178A JP 6682061 B1 JP6682061 B1 JP 6682061B1
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Abstract
【課題】おもに家庭用の混合栓の湯側の偏芯管と混合栓本体の間に分岐金具を後付け設置し分岐した時、分岐側に水が逆流することを防止するため、逆止弁を薄型でパッキンとして使用できるようにする。【解決手段】後付けした分岐金具と混合栓本体の間の接続部に配管長さの変化なく外観を損なうことがなく取り付けできるようにした。本発明のパッキン型逆止弁を取り付けすることで、各家庭に幅広く利用でき、作業性にも優れている。本発明のパッキン、弁座、弁体の３層で一般的なパッキンの肉厚になるようなパッキン型逆止弁であり、構造が簡単且つ安価に製造ができ大量生産に向いていると考えられる。【選択図】 図１PROBLEM TO BE SOLVED: To provide a check valve in order to prevent water from flowing backward to a branch side when a branch metal fitting is installed after being installed mainly between an eccentric tube on the hot water side of a domestic mixer tap and a main body of the mixer. It is thin and can be used as packing. SOLUTION: The connection between a branch metal fitting and a mixing stopper body, which are attached later, can be attached without changing the pipe length and without impairing the appearance. By installing the packing type check valve of the present invention, it can be widely used in each home and has excellent workability. It is a packing-type check valve in which the packing, valve seat, and valve body of the present invention have the same thickness as the packing in general, and the structure is simple and inexpensive to manufacture, and is considered to be suitable for mass production. To be [Selection diagram]
Description
本発明は、おもに家庭用の混合栓の偏芯管と混合栓本体の間に、後付けした分岐金具を設置し分岐した時、混合栓本体から分岐側に逆流を防止するための逆止弁に関する。 The present invention mainly relates to a check valve for preventing a backflow from a mixing plug body to a branch side when a branch metal fitting installed later is installed between an eccentric tube of a domestic mixing plug and a mixing plug body to branch. .
本発明はおもに家庭用に使用する混合栓などの分岐の時、偏芯管に分岐金具を後付けするが後付け位置により逆流を防止することができず、湯側に水が逆流することなどがある。これを防止するためには特許文献１の逆止弁や他の方法の数センチ長さがあるニップル型やソケット型等の逆止弁を使用する必要があったが、特許文献１の逆止弁では弁座の片面は弁体がありパッキン効果があるが、反対面の板状の弁座に直接配管端面が当たると、パッキン効果がなく水漏れの原因になり、他の方法の数センチある逆止弁を使用すると、偏芯管から分岐金具や逆止弁を後付けするので、混合栓本体までの長さが長く外観を損なう。
The present invention mainly installs a branch metal fitting on the eccentric tube when branching a mixing tap or the like used for home use, but the retrograde position cannot prevent backflow, and water may flow back to the hot water side. . In order to prevent this, it was necessary to use a check valve of
おもに家庭用の混合栓の偏芯管と混合栓本体の間に、後付けした分岐金具を設置し分岐した時、水漏れや外観を損なわないように薄型でパッキンとして使用できる逆止弁が必要である。 A check valve that is thin and can be used as packing is required to prevent water leakage and appearance when branching by installing a post-installed branch metal fitting between the eccentric tube of the domestic mixing tap and the main body of the mixing tap. is there.
逆止弁をパッキンとして使用できるように薄いパッキン、弁座、弁体、３層の構造にし、パッキンと弁体で弁座を挟む構造であり、３層で一般的なパッキンと同等の肉厚にすることが望まれ、パッキン、弁座、弁体は、それぞれ外周が密着し一体構造であり、下流方向に流体が通過し逆流方向には通過できない構造である。 The check valve has a thin packing, a valve seat, and a valve body so that it can be used as a packing, and the valve seat is sandwiched between the packing and the valve body. The three layers have the same thickness as a general packing. It is desirable that the packing, the valve seat, and the valve body have an integrated structure in which the outer circumferences are in close contact with each other, and the fluid passes in the downstream direction and cannot pass in the reverse flow direction.
構造が簡単であり、安価に製造ができ大量生産に向いていると考えられ、混合栓の後付けした分岐金具の本流のすぐ下流側接続部に取り付けする等の逆止弁として、幅広く利用できる。 It has a simple structure, can be manufactured at low cost, and is considered suitable for mass production, and can be widely used as a check valve such as being attached to a connection part immediately downstream of a branch metal fitting after which a mixing plug is attached.
１ 弁体
１−１ 弁体穴（下の図の弁体穴は１個のみ残りは省略）
２ 弁座
２−１ 弁座穴（下の図の弁座穴は１個のみ残りは省略）
３ パッキン
1 Valve body 1-1 Valve body hole (Only one valve body hole in the figure below is omitted)
2 Valve seat 2-1 Valve seat hole (only one valve seat hole is shown in the figure below, the rest is omitted)
3 packing
弁体（１） ：特許文献１（図１、請求項１）記載の弁体には薄肉部があり、その部分のみ大きく屈伸を繰り返すことで劣化の原因になり、弁体の寿命が短くなる可能性がある。弁体は均一な肉厚にすることで屈伸が一部に集中せず劣化が遅れ、弁体の利点になると考えられる。
図１，２から、パッキンと同じ円形の外径寸法、または、外周のみ弁座を包み込むように段差（図１下の図）があり、パッキンの内径より内側へ流体が通過する弁体穴が数個あり、弁座穴と弁体穴の位置が流れの方向で一致せずずれることで、通常の流体の流れの時、上流の配管から分岐側と本流側の混合栓へ流れるが、途中のパッキン型逆止弁の流れは、パッキンを通過し、弁座の弁座穴を通過し、下流側の弾性変形する弁体を流体の圧力で押し開き、弁座と弁体との隙間を通過し、弁体穴を通過し、その後下流の配管へ流れる。逆の流れの時は、下流の配管から流れた流体が弁体を押すが、流れの方向で弁体穴と弁座穴の位置がずれているため、弁体の弁体穴のない部分を弁座穴に押し付けても弁座は変形せず、弾性変形する弁体が弁座穴に押し付けられ蓋をし、流体の流れを防ぐため逆流はできず、配管端面に当たる外周はパッキンの役目をする弁体である。
弁座（２） ：肉厚が薄く変形せず、ほぼ錆等変質しない円形の板状であり、パッキンの外径と同じ寸法、または、パッキンの外径と内径の中間の外径寸法であり、パッキンの内径寸法より内側へ流体が通過する弁座穴が数個あり、弁体穴と弁座穴の位置が流れる方向に一致せずずれ、パッキンと弁体の間にある弁座である。特許文献１（図１、請求項１）記載の弁座には材質の記載はなく、もし弁体と同じように弾性変形する材質であれば、逆流する圧力は弁体には穴があるので掛からず、弁座の穴を弁体で塞いでいると弁座に圧力が掛かり、弁座が弾性変形し弁座と弁体は隙間ができ、逆流を防止できず逆止弁の役を果たさない。したがって、弁座は弾性変形してはならない。
弁座穴の小さい穴が数個ある利点は、弁座穴へ逆流する流体を止めるため、弁体が弁座穴に押し当たるが、弁座穴の総面積が同じでも、１個の大きい弁座穴より小さい穴が数個ある方が弁体の変形が小さく抑えられ、弁体の疲労による劣化を遅らせることができ、数個の小さい１個ずつの穴に対して小さな力で逆流を止めることができる。したがって、１個の大きい弁座穴より数個の弁座穴の方が弁体の肉厚を薄くできる可能性がある。
パッキン（３）：特許文献１（図１、請求項１）記載には本発明のパッキンに当たるものがなく、配管端面と接触する弁座側から漏れた流体が配管のネジ部から水漏れする可能性があり、本発明の特徴の一つであるパッキンは必要である。本発明のパッキン型逆止弁の肉厚が厚すぎると接続部の配管のネジが届かないことが考えられ、本発明のパッキンは一般的なパッキンよりも肉厚が薄く、本発明のパッキン、弁座、弁体の３層で一般的なパッキンの肉厚になるようなパッキンであり、パッキン効果により水漏れしない。
Valve body (1): The valve body described in Patent Document 1 (FIG. 1, claim 1) has a thin portion, and repeated bending and stretching of only that portion causes deterioration and shortens the life of the valve body. there is a possibility. It is considered that if the valve body has a uniform thickness, the bending and stretching are not concentrated in a part and the deterioration is delayed, which is an advantage of the valve body.
From Figures 1 and 2, there is a circular outer diameter that is the same as the packing, or there is a step (the figure in the lower part of Figure 1) so as to wrap the valve seat only on the outer circumference, and there is a valve body hole through which the fluid passes inside the packing inner diameter. There are several, and because the positions of the valve seat hole and the valve body hole do not match in the flow direction and deviate, during normal fluid flow, it flows from the upstream piping to the branch side and main side mixing taps, but on the way. The flow of the packing type check valve passes through the packing, passes through the valve seat hole of the valve seat, opens the elastically deformed valve element on the downstream side with fluid pressure, and opens the gap between the valve seat and the valve element. Pass through the valve body hole, then flow to the downstream pipe. In the case of reverse flow, the fluid flowing from the downstream pipe pushes the valve body, but the position of the valve body hole and the valve seat hole are misaligned in the flow direction, so the part of the valve body that does not have the valve body hole Even if pressed against the valve seat hole, the valve seat does not deform, and the elastically deformed valve body is pressed against the valve seat hole and covers the valve seat, preventing backflow to prevent the flow of fluid, and the outer periphery that touches the pipe end surface acts as a packing. It is a valve body that does.
Valve seat (2): It is a circular plate with a thin wall that does not deform and does not substantially deteriorate, such as rust, and has the same dimension as the outer diameter of the packing, or the outer diameter between the outer diameter and the inner diameter of the packing. , There are several valve seat holes that allow fluid to pass inward from the inner diameter of the packing, and the positions of the valve body hole and the valve seat hole do not match the flow direction and are displaced, which is the valve seat between the packing and the valve body. . There is no description of the material for the valve seat described in Patent Document 1 (FIG. 1, claim 1). If the material is elastically deformed similarly to the valve body, the backflow pressure has a hole in the valve body. If the valve seat is closed without closing, pressure will be applied to the valve seat, the valve seat will be elastically deformed, and a gap will be created between the valve seat and valve body, so that backflow cannot be prevented and it will serve as a check valve. Absent. Therefore, the valve seat must not elastically deform.
The advantage of having several small valve seat holes is that the valve body pushes against the valve seat hole to stop the fluid flowing back into the valve seat hole, but even if the total area of the valve seat holes is the same, one large valve If there are several holes that are smaller than the seat holes, the deformation of the valve body can be suppressed to a small extent, and the deterioration of the valve body due to fatigue can be delayed, and the backflow can be stopped with a small force for several small holes. be able to. Therefore, it is possible that the thickness of the valve body can be made thinner with several valve seat holes than with one large valve seat hole.
Packing (3): There is nothing corresponding to the packing of the present invention in Patent Document 1 (FIG. 1, claim 1), and fluid leaking from the valve seat side in contact with the end surface of the pipe can leak from the threaded portion of the pipe. The packing, which is one of the features of the present invention, is necessary. If the packing check valve of the present invention is too thick, the screw of the pipe of the connection part may not reach, and the packing of the present invention has a smaller thickness than a general packing, and thus the packing of the present invention, The packing is such that the thickness of the packing is generally three layers, the valve seat and the valve body, and water does not leak due to the packing effect .
シャワー付き混合栓本体と湯側の偏芯管の間に後付けした分岐金具を設置し分岐した場合で、シャワーの手元切り替えによる一時停止機能があり、一時停止時にシャワーの手元切り替えで湯配管と水配管の流れを止めているため、混合栓全体に（シャワー、偏芯管、分岐金具等含む）圧力が掛かっており、分岐側の栓を開くと混合栓へ流れるべき湯と水の混合水は後付けした分岐金具の分岐側へ流れ、分岐側が、熱い湯が必要なミストサウナであると、温度が下がり、サウナの役目を果たさない。
しかし、本発明のパッキン型逆止弁を湯側の後付けした分岐金具と混合栓本体の間に下流側へのみ流れるように設置することで、通常のシャワー使用時は、湯は上流の偏芯管から後付けした分岐金具を通り分岐側と混合栓本体両方へ流れ、シャワーの手元切り替えにより一時停止した時は、湯は上流の偏芯管から分岐側に流れるが、混合栓本体からの水の逆流は本発明のパッキン型逆止弁により、混合栓本体にとどまり後付けした分岐金具には流れない、分岐側には湯のみ流れ水が混合することなく熱い湯のままである。
混合栓の水側に後付けした分岐金具を取り付けした場合で、シャワーの手元切り替えで流れを一時停止した時、本発明のパッキン型逆止弁がないと、分岐側に湯が水の混合水となり逆流し、水だけ必要なのに湯を捨ててしまうようなものである。
外ネジ配管と内ネジ配管を接続するとき、パッキン型逆止弁を挟んで配管を回転しネジ込むと、パッキン型逆止弁の弁体がねじれ変形し、弁座と弁体に隙間ができ逆流を防止できない可能性があり、混合栓本体と偏芯管や後付けした分岐金具のような袋ナットを回しても中の配管が回転せず、袋ナットを回して外ネジ配管と接続するものに適している。
When a branch metal fitting is installed between the main body of the mixer with shower and the eccentric pipe on the hot water side to branch, there is a temporary stop function by switching the shower hand, and at the time of temporary stop the hot water pipe and water can be switched by switching the shower hand. Since the flow of the piping is stopped, pressure is applied to the entire mixing tap (including the shower, eccentric tube, branch fittings, etc.), and when the branch side plug is opened, the hot water and the mixed water of water that should flow to the mixing tap are If it is a mist sauna that requires hot water on the branch side, the temperature will drop and it will not function as a sauna.
However, by installing the packing type check valve of the present invention so as to flow only to the downstream side between the branch fitting retrofitted on the hot water side and the mixing stopper main body, the hot water is eccentric on the upstream side when using a normal shower. The water flows from the pipe to both the branch side and the mixing tap body through the branch fitting attached later, and when the shower is temporarily stopped by switching the hand, hot water flows from the upstream eccentric pipe to the branch side, but the water from the mixing tap body The backflow is retained by the packing check valve of the present invention and does not flow into the branch metal fitting installed afterwards in the main body of the mixing stopper. Only hot water flows into the branch side and hot water remains as it is without mixing.
When a post-installed branch metal fitting is attached to the water side of the mixing tap, and when the flow is temporarily stopped by switching the shower hand, without the packing check valve of the present invention, hot water becomes water mixed water on the branch side. It's like backwashing and throwing away hot water when you only need water.
When connecting the external threaded pipe and the internal threaded pipe, if the packing check valve is sandwiched and the pipe is rotated and screwed in, the valve of the packing check valve will be twisted and deformed, and a gap will be created between the valve seat and valve body. There is a possibility that backflow cannot be prevented, and the inner pipe does not rotate even if the cap nut such as the eccentric pipe and the branch metal fitting installed afterwards is turned, and the cap nut is turned to connect to the external threaded pipe. Suitable for
おもに家庭用の混合栓の湯側の偏芯管と混合栓本体の間に分岐金具を後付け設置し分岐した時、分岐側に水が逆流することを防止するための逆止弁に関するものである。本発明のパッキン型逆止弁は、構造が簡単であり安価に製造ができ大量生産に向いていると考えられ、混合栓等の偏芯管の後付けの分岐部にパッキンとして逆止弁を簡単に取り付けられ、分岐部のすぐ下流の混合栓本体との間の接続部にニップル型やソケット型の逆止弁による配管長さの変化なく、外観を損なうことがなく本発明のパッキン型逆止弁を取り付けすることで、各家庭に幅広く利用でき、作業性にも優れている。産業上の利用の可能性は充分ある。
This is mainly related to a check valve for preventing backflow of water to the branch side when a branch metal fitting is installed between the eccentric tube on the hot water side of the domestic mixer tap and the main body of the mixer after branching. . The packing-type check valve of the present invention is considered to be simple in structure, inexpensive to manufacture, and suitable for mass production, and the check valve can be simply used as a packing at a branch portion of an eccentric tube such as a mixing plug installed later. The nipple type or socket type check valve does not change the pipe length at the connection part with the mixing stopper body immediately downstream of the branching part and the packing type check valve of the present invention is not damaged. By installing a valve, it can be widely used in each home and has excellent workability. There is sufficient potential for industrial use.
Claims (1)
弁座（２）はパッキン（３）と同じ円形の外径と内径の中間の寸法であり、パッキン（３）の内径寸法より内側へ流体が通過する弁座穴（２−１）が数個あり、板状で均一な肉厚で流体の圧力では変形しない弁座（２）であり、弁座穴（２−１）と弁体穴（１−１）の位置が流れる方向に一致せずずれており、
パッキン（３）は配管の内径寸法且つ外径寸法に合致した寸法で、ドーナツ型のパッキン効果のある均一な肉厚で板状であり、
下流側から、弁体（１）と弁座（２）とパッキン（３）が連続してあり、外周で密着し一体化し、外ネジの配管と袋ナットの内側の配管の間に位置する、ことを特徴とするパッキン型逆止弁。 The valve body (1) has the same circular outer diameter as the packing (3), has a step only so as to wrap around the valve seat (2) only on the outer circumference , and has a uniform thickness and plate shape that elastically deforms. There are several valve body holes (1-1) through which the fluid passes inward from the inner diameter dimension of 3), and the outer circumference which is the end surface of the pipe is the valve body (1) which functions as packing.
The valve seat (2) has the same circular outer diameter and inner diameter as the packing (3), and has several valve seat holes (2-1) through which the fluid passes inward from the inner diameter of the packing (3). Yes, it is a plate-shaped valve seat (2) that has a uniform thickness and does not deform under the pressure of fluid, and the positions of the valve seat hole (2-1) and valve body hole (1-1) do not match the flowing direction. It ’s off,
The packing (3) has a size that conforms to the inner and outer diameters of the pipe, is a doughnut-shaped packing, and has a uniform thickness and plate shape,
From the downstream side, the valve body (1), the valve seat (2), and the packing (3) are continuous, and are closely adhered and integrated on the outer periphery, and are located between the pipe of the outer screw and the pipe inside the cap nut, packing type check valve, characterized in that.
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| JP2019076178A JP6682061B1 (en) | 2019-04-12 | 2019-04-12 | Packing type check valve |
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| JP2019076178A JP6682061B1 (en) | 2019-04-12 | 2019-04-12 | Packing type check valve |
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