JP3620116B2 - Water drain valve structure - Google Patents

Water drain valve structure Download PDF

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Publication number
JP3620116B2
JP3620116B2 JP25718695A JP25718695A JP3620116B2 JP 3620116 B2 JP3620116 B2 JP 3620116B2 JP 25718695 A JP25718695 A JP 25718695A JP 25718695 A JP25718695 A JP 25718695A JP 3620116 B2 JP3620116 B2 JP 3620116B2
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JP
Japan
Prior art keywords
water
cylinder
packing
drain
annular
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
Application number
JP25718695A
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Japanese (ja)
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JPH0979394A (en
Inventor
靖浩 佐藤
洋一 長島
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株式会社光合金製作所
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Priority to JP25718695A priority Critical patent/JP3620116B2/en
Publication of JPH0979394A publication Critical patent/JPH0979394A/en
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Anticipated expiration legal-status Critical
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Description

【0001】
【産業上の利用分野】
本発明は、弁箱内のシリンダをOリング等の環状パッキンが摺動、離脱して通止水および排水を行う、いわゆるピストン、シリンダタイプの水抜栓の改良に関する。
【0002】
【従来の技術】
この種の水抜栓はいずれも、流入口の上下にもうけた2個のシリンダに環状パッキンが密着して止水し、いずれか一方の環状パッキンがシリンダから離脱して通水するものであり、離脱した環状パッキンは常時水の流れにさらされているため、塗布した潤滑剤が失われやすく、シリンダに挿入される際、径年変化でハンドル操作が重くなり、ひどいときにはハンドル操作が不能になるという欠陥があった。さらに、水の流れで運ばれてくる工事の際の砂や配管の赤錆等も付着しやすく、水漏れの原因にもなっていた。
【0003】
【発明が解決しようとする課題】
そのため本発明は、環状パッキンが通水状態で水の流れにさらされることのないようにした水抜栓を提供することを目的としている。
【0004】
【課題を解決するための手段】
本発明の水抜栓は、流入口の上下いずれかのシリンダから離脱した通止水用の環状パッキンがさらに移動してもう一つのシリンダに密着して通水状態となるようにしたものである。
【0005】
【作用】
通水状態で通止水用の環状パッキンはシリンダに密着しており、水の流れにさらされていないので、塗布した潤滑剤は失われにくく、また異物がパッキンに付着する危険性も少ない。
【0006】
【実施例】
実施例について図面を参照して説明する。図1には本発明の水抜栓を地中に埋設しないで使用される水抜き用の3方弁に適用した例を示しているが、1は弁箱であり、側方に流入口2を、その下方に流出口3を、下端に排水口4をもうけ、内部には流入口2の上方に止水シリンダ5を、流入口2と流出口3間に通止水シリンダ6を、流出口3と排水口4間に排水シリンダ7をもうけている。さらに、シリンダ5、6間に流入口2に隣接して膨出空間部8をもうけているが、軸方向長さの短い分、直径方向、特に紙面と直角方向に十分な広がりを有しており、適宜な流路面積を確保できるようにしている。
【0007】
9はピストンであり、外周に上から順に環状止水パッキン10、環状通止水パッキン11、環状排水パッキン12を装着しており、パッキン11、12間に細径部13をもうけている。ピストン9の上端はスピンドル14の下端部に回転自在に連結され、スピンドル14は弁箱1の上端部に接続固定された操作部本体15の作動用雌ねじ部16に螺合されている。17はスピンドル14の上端に固定されたハンドルであり、18はピストン9の下降時のストッパーとなる突起である。
【0008】
図は通水状態を示しており、流入口2からの水は膨出空間部8に入った後で、通止水シリンダ6とピストン9の細径部13の間隙を通り、流出口3を通って、図示しないが立上管から蛇口へと流れている。この状態では環状止水パッキン10と環状通止水パッキン11が止水シリンダ5に密着し、環状排水パッキン12が排水シリンダ7に密着しているため、他所への流出はない。
【0009】
この状態からハンドル17を回転させると、操作部本体15の作動用雌ねじ部16に螺合されたスピンドル14も回転しながら下降するが、同時にピストン9も回転することなく下降し、まず環状通止水パッキン11が止水シリンダ5から離脱する。さらに下降して環状通止水パッキン11が通止水シリンダ6に密着して、環状止水パッキン10とにより流入口2からの水を遮断し、その後で環状排水パッキン12が排水シリンダ7から下方に離脱して立上管内の水を排水口4から排出し始める。そのため、流出口3と排水口4に同時に水が流れる、いわゆる同時漏水は生じない。最終的にはピストン9の下端部が突起18に当接して停止し、排水状態となる。
【0010】
次に再び水を出すときは、ハンドル17を先程とは反対に回してやればよく、今度は環状排水パッキン12が排水シリンダ7に密着した後で環状通止水パッキン11が通止水シリンダ6から離脱し、さらに上昇して止水シリンダ5に密着して図1の状態に復帰する。本発明においては、過大なストロークを避けるため、膨出空間部8の軸方向長さをできるだけ短くしているが、前述したように直径方向、特に紙面と直角方向に十分な広がりを有しているため、吐水量に悪影響は及ぼさない。
【0011】
図2に、本発明を地中に埋設して使用する不凍給水栓に適用した例を示すが、図1のものとの相違点は以下の通りである。すなわち、弁箱1は下方に流入口2を、上方に流出口3を、さらにその上方に排水口4をもうけ、内部には、流入口2の上方に通止水シリンダ6を、下方に止水シリンダ5を、排水口4の上下に2個の排水シリンダ7’、 7をもうけている。ピストン9の外周には上から順に、環状排水パッキン12’、12、環状通止水パッキン11、環状止水パッキン10を装着し、内部に連通孔19を穿っている。弁箱1はパイプ20により地上に延長されて操作部本体(図面省略)に接続され、ピストン9はピストン継手21を介してロッド22により地上に延長されてスピンドル(図面省略)に連結される。図示しないが、排水口4には地中の汚水が弁箱1内に入り込まないように逆止弁を取り付ける。
【0012】
図は通水状態を示しているが、排水パッキン12、12’は排水シリンダ7に密着しており、通止水パッキン11および止水パッキン10は止水シリンダ5に密着しているため、1本の環状パッキンで止水するよりも漏水の危険性がそれだけ少なくなるという利点がある。図の状態からピストン9を上昇させていくと、環状通止水パッキン11が止水シリンダ5から離脱し、さらに通止水シリンダ6に密着して止水環状パッキン10とにより流入口2からの水を止めた後で環状排水パッキン12が排水シリンダ7から離脱し、立上管内の水は排水口4から地中に排出される。つまり、排水状態になる。
【0013】
このとき、環状排水パッキン12’は排水シリンダ7’に密着しているため、パイプ20内に水が上昇することはないが、万一上昇した場合にあっても図の通水状態にすれば排水口4から排出されることになる。排水状態から通水状態にするときは、ピストン9の下端に溜まった水は連通孔19を通って排水口4から排出され、ピストン9の下降に悪影響を及ぼさない。
【0014】
図3に本発明のもう一つの実施例を排水状態で示すが、環状通止水パッキン11が通止水シリンダ6に密着し、環状止水パッキン10が止水シリンダ5に密着して流入口2からの水を遮断しており、環状排水パッキン12が排水シリンダ7から離脱しているため、流出口3からの水は連通孔19を通って、弁箱1の下端にもうけた排水口4から地中に排出される。このとき、環状排水パッキン12’が排水シリンダ7’に密着しているため、パイプ20内に水が侵入することはない。通水状態にするときはピストン9を上昇させればよく、排水シリンダ7に通止水パッキン11および排水パッキン12が密着し、排水パッキン12’は排水シリンダ7’から離脱している。
【0015】
【発明の効果】
上述したように本発明の水抜栓にあっては、通止水パッキンは通水状態でもシリンダに密着しているので、塗布した潤滑剤が水の流れで失われる、あるいは砂や配管の赤錆が付着するという恐れが少ないため、ハンドルが径年変化で重たくなったり、漏水の生じる危険性がそれだけ減少し、通水状態においては、通止水パッキンと止水パッキンあるいは排水パッキンのいずれかの2本のパッキンで止水しているため、通水状態で使用されることが大部分の水抜栓にあっては、パッキンの損傷による漏水の危険性を減少させるということは、きわめて大きな効果を有するといえる。
【図面の簡単な説明】
【図1】本発明の1実施例を示す、通水状態における縦断面図である。
【図2】本発明の他の実施例を示す、同じく通水状態における縦断面図である。
【図3】本発明のもう一つの実施例を示す、排水状態における縦断面図である。
【符号の説明】
1 弁箱
2 流入口
3 流出口
4 排水口
5 止水シリンダ
6 通止水シリンダ
7、7’ 排水シリンダ
8 膨出空間部
9 ピストン
10 環状止水パッキン
11 環状通止水パッキン
12、12’ 環状排水パッキン
[0001]
[Industrial application fields]
The present invention relates to an improvement of a so-called piston or cylinder type water drain plug in which an annular packing such as an O-ring slides and separates from a cylinder in a valve box to perform stop water and drainage.
[0002]
[Prior art]
Both of these types of water stoppers are designed so that the annular packing adheres to two cylinders provided at the top and bottom of the inflow port to stop water, and either one of the annular packings separates from the cylinder and allows water to flow. Since the removed annular packing is always exposed to water flow, it is easy to lose the applied lubricant, and when inserted into the cylinder, the steering wheel operation becomes heavy due to the change in diameter, and the steering wheel operation becomes impossible in severe cases. There was a defect. In addition, sand and red rust on the pipes that were carried by the water flow were easily attached, causing water leakage.
[0003]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide a water drain plug in which the annular packing is not exposed to the flow of water in a water-permeable state.
[0004]
[Means for Solving the Problems]
In the water drain plug of the present invention, the annular packing for water stoppage that has been released from one of the cylinders above and below the inlet is further moved so as to be in close contact with the other cylinder so as to be in a water-permeable state.
[0005]
[Action]
Since the annular packing for stopping water is in close contact with the cylinder in a water-flowing state and is not exposed to the flow of water, the applied lubricant is not easily lost, and there is little risk of foreign matter adhering to the packing.
[0006]
【Example】
Embodiments will be described with reference to the drawings. FIG. 1 shows an example in which the drain plug according to the present invention is applied to a three-way valve for draining that is used without being buried in the ground. 1 is a valve box, and an inlet 2 is provided on the side. The outlet 3 is provided below, the drain 4 is provided at the lower end, the water stop cylinder 5 is provided above the inlet 2, and the water stop cylinder 6 is provided between the inlet 2 and the outlet 3. A drainage cylinder 7 is provided between 3 and the drainage port 4. Further, a bulging space portion 8 is provided between the cylinders 5 and 6 adjacent to the inflow port 2 and has a sufficient extent in the diameter direction, particularly in the direction perpendicular to the paper surface, due to the short axial length. Therefore, an appropriate flow path area can be secured.
[0007]
Reference numeral 9 denotes a piston, which is provided with an annular water blocking packing 10, an annular water blocking packing 11, and an annular drainage packing 12 in order from the top on the outer periphery, and a small diameter portion 13 is provided between the packings 11 and 12. The upper end of the piston 9 is rotatably connected to the lower end portion of the spindle 14, and the spindle 14 is screwed into an operating female thread portion 16 of the operation portion main body 15 connected and fixed to the upper end portion of the valve box 1. Reference numeral 17 denotes a handle fixed to the upper end of the spindle 14, and reference numeral 18 denotes a protrusion that serves as a stopper when the piston 9 is lowered.
[0008]
The figure shows a water flow state. After water from the inlet 2 enters the bulging space 8, it passes through the gap between the small diameter portion 13 of the stop water cylinder 6 and the piston 9, and passes through the outlet 3. Although not shown, it flows from the riser to the faucet. In this state, the annular water blocking packing 10 and the annular water blocking gasket 11 are in close contact with the water stopping cylinder 5 and the annular drainage packing 12 is in close contact with the draining cylinder 7, so there is no outflow to other places.
[0009]
When the handle 17 is rotated from this state, the spindle 14 screwed into the operating female thread portion 16 of the operation portion main body 15 also descends while rotating, but at the same time, the piston 9 also descends without rotating, and first the annular stopper The water packing 11 is detached from the water stop cylinder 5. Further, the annular sealing water packing 11 is brought into close contact with the blocking water cylinder 6, and water from the inlet 2 is blocked by the annular sealing water packing 10, and then the annular draining packing 12 is moved downward from the draining cylinder 7. And the water in the riser pipe begins to be discharged from the drain port 4. Therefore, so-called simultaneous water leakage, in which water flows through the outlet 3 and the drain 4 simultaneously, does not occur. Eventually, the lower end portion of the piston 9 comes into contact with the protrusion 18 and stops, and a draining state is established.
[0010]
Next, when water is discharged again, it is only necessary to turn the handle 17 in the opposite direction. This time, after the annular draining packing 12 comes into close contact with the draining cylinder 7, the annular sealing water packing 11 is removed from the blocking water cylinder 6. It disengages, further rises, comes into close contact with the water stop cylinder 5 and returns to the state shown in FIG. In the present invention, in order to avoid an excessive stroke, the length of the bulging space 8 in the axial direction is made as short as possible. However, as described above, it has a sufficient extent in the diameter direction, particularly in the direction perpendicular to the paper surface. Therefore, there is no adverse effect on water discharge.
[0011]
FIG. 2 shows an example in which the present invention is applied to an antifreeze water faucet that is used by being buried in the ground. The differences from FIG. 1 are as follows. That is, the valve box 1 has an inflow port 2 below, an outflow port 3 above, a drain port 4 above it, and a stop water cylinder 6 above the inflow port 2 inside, and a downward stop. The water cylinder 5 is provided with two drain cylinders 7 ′ and 7 above and below the drain port 4. On the outer periphery of the piston 9, annular drainage packings 12 ′, 12, an annular sealing water packing 11 and an annular sealing water packing 10 are attached in order from the top, and a communication hole 19 is bored inside. The valve box 1 is extended to the ground by a pipe 20 and connected to an operation unit main body (not shown), and the piston 9 is extended to the ground by a rod 22 via a piston joint 21 and connected to a spindle (not shown). Although not shown, a check valve is attached to the drain port 4 so that underground sewage does not enter the valve box 1.
[0012]
Although the figure shows a water flow state, the drainage packings 12 and 12 ′ are in close contact with the drainage cylinder 7, and the waterstop packing 11 and the waterstop packing 10 are in close contact with the waterstop cylinder 5. There is an advantage that the risk of water leakage is less than that when water is stopped with the ring packing of the book. When the piston 9 is lifted from the state shown in the figure, the annular water blocking packing 11 is detached from the water blocking cylinder 5 and is further brought into close contact with the water blocking cylinder 6 from the inlet 2 by the water blocking annular packing 10. After the water is stopped, the annular drain packing 12 is detached from the drain cylinder 7 and the water in the riser pipe is discharged from the drain port 4 into the ground. That is, it becomes a drained state.
[0013]
At this time, since the annular drainage packing 12 'is in close contact with the drainage cylinder 7', water does not rise in the pipe 20, but even if it rises, it should be in the water-flowing state shown in the figure. It will be discharged from the drain port 4. When changing from the drained state to the water passing state, the water accumulated at the lower end of the piston 9 is discharged from the drain port 4 through the communication hole 19 and does not adversely affect the lowering of the piston 9.
[0014]
FIG. 3 shows another embodiment of the present invention in a drained state. An annular water blocking packing 11 is in close contact with the water blocking cylinder 6, and an annular water blocking packing 10 is in close contact with the water blocking cylinder 5. 2 is shut off, and the annular drain packing 12 is detached from the drain cylinder 7. Therefore, the water from the outlet 3 passes through the communication hole 19, and the drain 4 is provided at the lower end of the valve box 1. Discharged into the ground. At this time, since the annular drain packing 12 ′ is in close contact with the drain cylinder 7 ′, water does not enter the pipe 20. In order to make the water flow state, the piston 9 may be raised, the stop water packing 11 and the drain packing 12 are in close contact with the drain cylinder 7, and the drain packing 12 'is detached from the drain cylinder 7'.
[0015]
【The invention's effect】
As described above, in the water stopper of the present invention, the sealing water packing is in close contact with the cylinder even in the water passing state, so that the applied lubricant is lost due to the flow of water, or red rust of the sand and piping is Since there is little risk of sticking, the risk that the handle will become heavier due to changes in diameter and the risk of water leakage will be reduced accordingly, and in the water-flowing state, either the stop water packing and the stop water packing or the drainage packing 2 Since most of the water drains that are used in a water-permeable state are water-stopped with a book packing, reducing the risk of water leakage due to damage to the packing is extremely effective. That's right.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view in a water passage state showing one embodiment of the present invention.
FIG. 2 is a longitudinal sectional view in the same water passing state, showing another embodiment of the present invention.
FIG. 3 is a longitudinal sectional view in a drained state showing another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Valve box 2 Inlet 3 Outlet 4 Drain outlet 5 Water stop cylinder 6 Stop water cylinder 7, 7 'Drain cylinder 8 Expansion space part 9 Piston 10 Ring seal water seal 11 Ring seal water seal 12, 12' Ring Drain packing

Claims (1)

流入口、流出口、排水口を有し、流入口、流出口間に通止水シリンダを、流出口、排水口間に排水シリンダを、流入口を介して通止水シリンダと反対側に止水シリンダを同一軸心上にもうける弁箱と、上記止水シリンダを摺動する環状止水パッキン、排水シリンダを摺動する環状排水パッキン、および排水時には通止水シリンダに、通水時には他のいずれか一つのシリンダに密着する環状通止水パッキンを外周に装着するピストンとを備えた水抜栓の弁構造。It has an inlet, outlet and drain, and a stop water cylinder between the inlet and outlet and a drain cylinder between the outlet and drain are stopped on the opposite side of the stop cylinder via the inlet. A valve box with a water cylinder on the same axis, an annular water seal that slides on the water stop cylinder, an annular water seal that slides on the drain cylinder, and a water stop cylinder when draining, A valve structure for a water draining plug, comprising a piston for attaching an annular sealing water packing closely attached to any one of the cylinders to the outer periphery.
JP25718695A 1995-09-08 1995-09-08 Water drain valve structure Expired - Fee Related JP3620116B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25718695A JP3620116B2 (en) 1995-09-08 1995-09-08 Water drain valve structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25718695A JP3620116B2 (en) 1995-09-08 1995-09-08 Water drain valve structure

Publications (2)

Publication Number Publication Date
JPH0979394A JPH0979394A (en) 1997-03-25
JP3620116B2 true JP3620116B2 (en) 2005-02-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP25718695A Expired - Fee Related JP3620116B2 (en) 1995-09-08 1995-09-08 Water drain valve structure

Country Status (1)

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JP (1) JP3620116B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4010925B2 (en) 2002-11-05 2007-11-21 株式会社アドヴィックス Automatic clutch control device
CN110640657B (en) * 2019-10-22 2021-03-23 苏州精濑光电有限公司 Adsorption device
CN113669479B (en) * 2021-09-06 2022-10-18 青岛理工大学 Water-cut and water-discharge anti-freezing converter and method for water supply pipeline

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