JPH0629568Y2 - Double strainer cock - Google Patents
Double strainer cockInfo
- Publication number
- JPH0629568Y2 JPH0629568Y2 JP10417188U JP10417188U JPH0629568Y2 JP H0629568 Y2 JPH0629568 Y2 JP H0629568Y2 JP 10417188 U JP10417188 U JP 10417188U JP 10417188 U JP10417188 U JP 10417188U JP H0629568 Y2 JPH0629568 Y2 JP H0629568Y2
- Authority
- JP
- Japan
- Prior art keywords
- cock
- chamber
- hole
- fluid
- pressure
- 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 - Lifetime
Links
Landscapes
- Taps Or Cocks (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は、複式ストレーナーのコックに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a cock for a double strainer.
（従来の技術） エンジン、ボイラー等の燃料油または潤滑油に使用する
ストレーナーのこし筒は、汚物や油中の不純物で目づま
りしやすく、時々洗浄しなければならないが、洗浄中も
エンジンやボイラーを止める訳に行かないので、複式ス
トレーナーが用いられ、コック切換により油の流入路を
切り換えて、いずれか一方のこし筒を使用する構造を採
用している。この複式ストレーナーのコックとしては一
般に、逆円錐形の旋回孔を有するコックケーシングに、
逆円錐形のコックを嵌合圧入させたものが多く使用され
ている。この構造のものは、油等の流体がコックケーシ
ングとコックとの間隙から漏れないようにコックを旋回
孔に圧入嵌合させている。流体の流路を切り換えるため
には、コックを旋回させて角度を換えなければならず、
そのために相当の力を必要とする。(Prior Art) Strainer cylinders used for fuel oil or lubricating oil for engines, boilers, etc. are apt to be clogged with dirt and impurities in the oil and must be cleaned from time to time. Since it can't be stopped, a double strainer is used, and the inflow passage of oil is switched by switching the cock, and one of the strainers is used. As a cock of this double strainer, generally, in a cock casing having a conical turning hole,
The one in which an inverted conical cock is press fitted is often used. With this structure, the cock is press-fitted into the swirl hole so that fluid such as oil does not leak from the gap between the cock casing and the cock. In order to switch the flow path of the fluid, you have to rotate the cock and change the angle,
It requires considerable power for that.
使用中のコックにはコックの自重を含め種々の力が働い
ているが、コック底部とコックケーシングとによりコッ
ク最下端にできる密室７とコック下段室間の圧力差が、
コック下段壁８に生ずる上下向きスラスト荷重となり、
これがコック表面とコックケーシングとの間に生ずる摩
擦力を高め、流体流路切換時に必要とされる力を著しく
増大させている。Various forces act on the cock in use, including its own weight, but the pressure difference between the closed chamber 7 and the lower chamber of the cock, which can be at the lowest end of the cock by the cock bottom and the cock casing,
Vertical thrust load generated on the lower cock wall 8
This enhances the frictional force generated between the cock surface and the cock casing, and significantly increases the force required when switching the fluid flow paths.
この力を軽滅させるために、従来は、第５図および第６
図に示すように、２つの下段室５、６ａの内一方の下段
室６ａの下段壁８に孔１０を設け、コック最下端に出来
る密室７へ流体を導き圧力のバランスをとり、下向きス
ラスト荷重を消滅させる方法をとっている。Conventionally, in order to make this force light,
As shown in the figure, a hole 10 is provided in the lower wall 8 of the lower chamber 6a, which is one of the two lower chambers 5 and 6a, and the fluid is guided to the closed chamber 7 formed at the lowermost end of the cock to balance the pressure, and the downward thrust load. Is taken to eliminate.
（考案により解決しようとする課題） 従来の上記コックの下段壁８の孔１０は、コックの構造
上、下段室の左右のどちらか一方しか開けることができ
ないので、孔の開いていない下段室５を流体が流れてい
るときは、その室内が高圧となり、使用していない室６
ａと最下端の密室７は孔１０を通じて同圧であるが、流
体の流れている下段室５よりも圧力が低いから、流体の
流れている下段室５と密室７とを隔てる下段壁８の上下
面の圧力のバランスがくずれ、該下段壁８に下方にスラ
ストが作用し、この力がテーパー面にくさび力として作
用し、コックの引き上げまたは回転に大きな力を必要と
する。(Problems to be solved by the invention) Since the hole 10 of the lower wall 8 of the conventional cock can be opened only on one of the left and right sides of the lower chamber due to the structure of the cock, the lower chamber 5 with no hole is formed. When the fluid is flowing through the chamber, the pressure inside the chamber becomes high and the chamber 6 not in use
Although a and a closed chamber 7 at the lowermost end have the same pressure through the hole 10, since the pressure is lower than that of the lower chamber 5 in which the fluid is flowing, the lower wall 8 of the lower wall 8 separating the lower chamber 5 in which the fluid is flowing and the closed chamber 7 is separated. The pressure balance between the upper and lower surfaces is lost, and thrust acts downward on the lower step wall 8, and this force acts as a wedge force on the tapered surface, which requires a large force to pull up or rotate the cock.
この考案は、コックの下段室と最下端に出来る密室とを
隔てる下段壁にかかる圧力のバランスをはかり、スラス
ト荷重を消滅させたコックを提供することを目的とす
る。An object of the present invention is to provide a cock in which the thrust load is eliminated by balancing the pressure applied to the lower wall that separates the lower chamber of the cock from the closed chamber formed at the lowermost end.
（課題を解決するための手段） コックの下段を２室に分ける隔壁４に、コック上段室３
とコック最下端に出来る密室７とを連通する１または複
数の貫通孔９を設ける。(Means for Solving the Problem) In the partition wall 4 which divides the lower stage of the cock into two chambers, the upper chamber 3 of the cock is arranged.
One or a plurality of through holes 9 are provided to connect the closed chamber 7 formed at the lowermost end of the cock.
（作用） 貫通孔９は、流体を上段室３からコック最下端に出来る
密室７に導き、流体が流れている下段室と密室７との下
段壁８の上下面における圧力をほぼ等しくし、下段室に
よるアンバランススラスト荷重を消滅させ、コックの引
き上げ、回動を円滑、かつ、容易にする。(Function) The through hole 9 guides the fluid from the upper chamber 3 to the closed chamber 7 formed at the lowermost end of the cock, and makes the pressures in the upper and lower surfaces of the lower chamber 8 and the lower chamber 8 in which the fluid flows substantially equal to each other. The unbalanced thrust load from the chamber is eliminated, and the cock can be pulled up and rotated smoothly and easily.
（実施例） この考案の実施例を図面により説明する。(Embodiment) An embodiment of the present invention will be described with reference to the drawings.
１はコックケーシングであり、２はコックである。Reference numeral 1 is a cock casing, and 2 is a cock.
コック２は流体の流入口を有する上段室３と、その下方
に隔壁４により仕切られた２つの下段室５および６を有
する。The cock 2 has an upper chamber 3 having a fluid inlet, and two lower chambers 5 and 6 partitioned by a partition wall 4 below the upper chamber 3.
７はコック２をケーシングに嵌入したときにコック底部
とコックケーシングとによりコック最下端に出来る密室
である。Reference numeral 7 denotes a closed chamber which is formed at the lowermost end of the cock by the cock bottom and the cock casing when the cock 2 is fitted into the casing.
８は下段室５および６と密室７とを隔てる下段壁であ
る。下段室５および６の底部の下段壁８には孔をあけな
い。A lower wall 8 separates the lower chambers 5 and 6 from the closed chamber 7. No holes are made in the lower wall 8 at the bottom of the lower chambers 5 and 6.
隔壁４には上段室３と密室７とを連通させる貫通孔９を
設ける。貫通孔９は中心に１個設けてもよく、また複数
個設けてもよい。隔壁４の強度を保つために貫通孔９の
周囲の隔壁を肉盛りするのが好ましい。The partition wall 4 is provided with a through hole 9 for communicating the upper chamber 3 and the closed chamber 7. One through hole 9 may be provided at the center, or a plurality of through holes 9 may be provided. In order to maintain the strength of the partition wall 4, it is preferable to build up the partition wall around the through hole 9.
このコックを使用する場合には、流体の一部は上段室３
から貫通孔９を通って密室７に流入するので、上段室３
と密室７との圧力は等しくなり、圧力によるアンバラン
ス力はほぼなくなる。When using this cock, part of the fluid is in the upper chamber 3
Flows into the closed chamber 7 through the through hole 9 from the upper chamber 3
And the pressure in the closed chamber 7 become equal, and the imbalance force due to the pressure almost disappears.
また、下段室５または６のいずれかに流体が流入し、他
のいずれかが解放され大気圧となっても、各下段室５お
よび６それぞれの上下面で圧力がバランスし、下段室５
または６のいずれを使用している場合でも、コック２に
はスラスト作用が生じない。Further, even if the fluid flows into either of the lower chambers 5 or 6 and any of the other chambers is released to the atmospheric pressure, the pressure is balanced between the upper and lower surfaces of each of the lower chambers 5 and 6 and the lower chamber 5
The thrust action does not occur in the cock 2 regardless of which of the above or 6 is used.
（効果） この考案に係る複式ストレーナーのコックは、上段室と
密室との圧力がバランスしていて、コックに対するスラ
スト荷重を消滅させているので、コックの引き上げおよ
び回動をわずかな力で、円滑、かつ、容易に行うことが
できる。(Effect) The double strainer cock according to the present invention balances the pressure in the upper chamber and the closed chamber to eliminate the thrust load on the cock, so that the cock can be pulled up and rotated smoothly with a small force. And, it can be easily performed.
第１図はこの考案の実施例のコックの縦断面図、第２図
は同Ａ−Ａ断面の端面図、第３図は同Ｂ−Ｂ断面の端面
図、第４図は同要部底面図、第５図は従来例の縦断面
図、第６図は同Ｃ−Ｃ断面図である。 １……コックケーシング ２……コック ３……上段室 ４……隔壁 ５、６、６ａ……下段室 ７……密室 ８……下段壁 ９……貫通孔 １０……孔FIG. 1 is a longitudinal sectional view of a cock according to an embodiment of the present invention, FIG. 2 is an end view of the same section AA, FIG. 3 is an end view of the same section BB, and FIG. 5 and 5 are vertical cross-sectional views of the conventional example, and FIG. 6 is a cross-sectional view of the same taken along line CC. 1 ... cock casing 2 ... cock 3 ... upper chamber 4 ... partition walls 5, 6, 6a ... lower chamber 7 ... closed chamber 8 ... lower wall 9 ... through hole 10 ... hole
Claims (1)
切換コックにおいて、下段隔壁(4)内に、上段室(3)とコ
ック最下端に生ずる密室(7)間を連通する貫通孔(9)を有
することを特徴とする複式ストレーナーのコック。1. A taper type switching cock having an upper flow path and a lower flow path, a through hole communicating in the lower partition wall (4) between an upper chamber (3) and a closed chamber (7) formed at the lowermost end of the cock. A double strainer cock having (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10417188U JPH0629568Y2 (en) | 1988-08-05 | 1988-08-05 | Double strainer cock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10417188U JPH0629568Y2 (en) | 1988-08-05 | 1988-08-05 | Double strainer cock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0225779U JPH0225779U (en) | 1990-02-20 |
| JPH0629568Y2 true JPH0629568Y2 (en) | 1994-08-10 |
Family
ID=31335653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10417188U Expired - Lifetime JPH0629568Y2 (en) | 1988-08-05 | 1988-08-05 | Double strainer cock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629568Y2 (en) |
-
1988
- 1988-08-05 JP JP10417188U patent/JPH0629568Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0225779U (en) | 1990-02-20 |
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