JPH0743558Y2 - Check valve that doubles as an on-off valve - Google Patents
Check valve that doubles as an on-off valveInfo
- Publication number
- JPH0743558Y2 JPH0743558Y2 JP1336990U JP1336990U JPH0743558Y2 JP H0743558 Y2 JPH0743558 Y2 JP H0743558Y2 JP 1336990 U JP1336990 U JP 1336990U JP 1336990 U JP1336990 U JP 1336990U JP H0743558 Y2 JPH0743558 Y2 JP H0743558Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hole
- branch
- flow
- check valve
- 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)
- Check Valves (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は開閉弁を兼ねる逆止弁に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a check valve that also serves as an on-off valve.
一般に、管路において流体の流量調整と流向調整を行う
場合,前者に対しては開閉弁が、また後者に対しては逆
止弁を設けることが行われる。Generally, when adjusting the flow rate and the flow direction of a fluid in a pipeline, an opening / closing valve is provided for the former and a check valve for the latter.
また、これらの両者を兼ねる弁として、例えば特開昭59
−147171号に開示されているような流体弁が公知であ
る。Further, as a valve that serves both of these, for example, Japanese Patent Laid-Open No.
Fluid valves such as those disclosed in -147171 are known.
しかしながら、上記従来技術において、開閉弁と逆止弁
とを接続して設けるのは、何れの弁も内部流体の流路を
複雑に屈曲させ、例えば球型弁にあっては流路が殆ど直
角に偏向させられ、一方逆止弁にあっては、常時流体内
に遮断用弁体が吊り下げられた状態となっているので、
両者相俟ってかなりの流体抵抗となり流れの効率が悪く
なる問題があった。However, in the above-mentioned conventional technology, it is provided that the on-off valve and the check valve are connected to each other so that each valve complicates the flow path of the internal fluid, and, for example, in a spherical valve, the flow path is almost right On the other hand, in the check valve, since the shut-off valve element is always suspended in the fluid,
Both of them had a problem that the fluid resistance became considerable and the flow efficiency was deteriorated.
一方、後者の開閉弁を兼ねる逆止弁とされた流体弁は、
前者ほど流れの効率が低下するといった問題は少ないと
考えられるが、定常流では、逆止を行う球体弁が流路断
面の殆どを遮蔽して流体圧力に抗して静止しているか
ら、流れの効率の低下は著しく、さほどの抵抗軽減化に
は寄与しない問題があった。On the other hand, the latter fluid valve, which is also a check valve that doubles as an on-off valve,
It is thought that there is less problem that the efficiency of the flow decreases as the former, but in the steady flow, the spherical valve that performs the check blocks most of the flow passage cross section and stands still against the fluid pressure. There was a problem in that the efficiency was significantly reduced, and it did not contribute to the reduction in resistance.
また、一般に逆止弁の管の上流下流方向に対して取付け
方向が決まっており、敷設時にその向きを注意を要する
といった面倒さがある欠点も有った。In addition, there is also a drawback in that the mounting direction is generally determined with respect to the upstream and downstream directions of the check valve pipe, and that the direction must be taken care when laying.
この考案は上記問題点に鑑み、流れの効率を出来るだけ
低下させることなく、しかも逆流が生じた時は確実な遮
断が出来、さらに一つの弁で開閉調節も可能であり、取
付け後であっても逆止方向が簡単に偏向出来る開閉弁を
兼ねる逆止弁を提供することを目的としてなされたもの
である。In view of the above-mentioned problems, the present invention can reduce the flow efficiency as much as possible, can surely shut off when a backflow occurs, and can be opened and closed with one valve, and after installation, Another object of the present invention is to provide a check valve that doubles as an open / close valve whose check direction can be easily deflected.
即ち、この考案の開閉弁を兼ねる逆止弁は、弁箱内に該
弁箱内面と外周面を密着させ垂直軸周囲に回転可能に開
閉弁体が収納され、該開閉弁体には前記弁箱に接続され
る管と連通可能な、前記垂直軸に直交する流通孔が穿設
され、該流通孔より大口径とされた分岐孔が、前記流通
孔から斜上方へ連通して分岐されると共に該分岐孔の分
岐起点部の前記流通孔断面が円形とされ、前記分岐孔内
には前記流通孔より大径の球状の逆止用弁体が移動可能
に受容されてなることを特徴とするものである。That is, the check valve also functioning as an on-off valve according to the present invention has an on-off valve body housed in a valve box such that the inner surface and the outer peripheral surface of the valve box are in close contact with each other and rotatable about a vertical axis. A through hole, which is capable of communicating with a pipe connected to the box and which is orthogonal to the vertical axis, is bored, and a branch hole having a larger diameter than the through hole is branched from the through hole in an obliquely upward direction. Along with that, the cross section of the flow hole at the branch starting point of the branch hole is circular, and a spherical check valve having a larger diameter than the flow hole is movably received in the branch hole. To do.
次に、この考案の実施例を説明する。 Next, an embodiment of this invention will be described.
第1図はこの考案の実施例の断面図、第2図は他の実施
例の断面図、第3図はさらに他の実施例の断面図、第4
図は実施例の平面図である。1 is a sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of another embodiment, FIG. 3 is a sectional view of yet another embodiment, and FIG.
The figure is a plan view of the embodiment.
この考案の開閉弁を兼ねる逆止弁1は、弁箱2に弁箱内
面2Aと外周面3Aを密着させ垂直軸N−N周囲に回転可能
な開閉弁体3が収納され、この開閉弁体3には弁箱2に
接続される管P、Pと連通可能な流通孔4が垂直軸N−
Nに直交して穿設され、流通孔4より大口径とされた分
岐孔5が斜上方へ連通して分岐され、この分岐孔5の分
岐起点部の流通孔4の断面形状Sが円形とされ、分岐孔
5内には流通孔4より大径の球状の逆止用弁体6が移動
可能に受容されて構成されている。The check valve 1 also functioning as an on-off valve of the present invention has a valve box 2 in which a valve box inner surface 2A and an outer peripheral surface 3A are in close contact with each other and a rotatable on-off valve body 3 is housed around a vertical axis NN. In FIG. 3, a pipe P connected to the valve box 2 and a flow hole 4 that can communicate with the pipe P are provided on the vertical axis N−.
A branch hole 5 having a diameter larger than that of the through hole 4 is formed so as to be orthogonal to the N and communicates obliquely upward to branch, and the cross-sectional shape S of the through hole 4 at the branch starting point of the branch hole 5 is circular. In addition, a spherical check valve 6 having a larger diameter than the flow hole 4 is movably received in the branch hole 5.
上記実施例において開閉弁体3は垂直軸N−Nを軸とす
る球(第1図、第2図)または円筒体(第3図)などの
回転体とされる。In the above embodiment, the on-off valve body 3 is a rotating body such as a sphere (Figs. 1 and 2) or a cylindrical body (Fig. 3) having a vertical axis N-N as an axis.
また、分岐孔5の流通孔4との連通状態は分岐孔5の分
岐起点における連通孔4の断面Sが円形とされればよ
く、この限りにおいて連通孔4と分岐孔5との分岐起点
における両者の位置関係は偏心した状態又は同心状の配
置状態のいずれでも良い。Further, the communication state of the branch hole 5 with the flow hole 4 may be such that the cross section S of the communication hole 4 at the branch start point of the branch hole 5 has a circular shape, and as long as this is the case, at the branch start point of the communication hole 4 and the branch hole 5. The positional relationship between the two may be either eccentric or concentric.
なお、分岐孔5と連通孔4の連通部分は第2図図示のよ
うに、連通孔4に沿って延長(L)した状態に穿設する
こともできる。The communicating portion between the branch hole 5 and the communicating hole 4 may be provided in a state of being extended (L) along the communicating hole 4 as shown in FIG.
なお、図中7は開閉弁体3の回転操作ハンドルを示す。
また、このハンドル7には第3図に示すように順流方向
となる向きを示す矢印7Aを表示しておくことが望まし
い。Reference numeral 7 in the drawing denotes a rotation operation handle of the opening / closing valve body 3.
Further, it is desirable to display an arrow 7A indicating the direction of the forward flow direction on the handle 7 as shown in FIG.
この考案において、流れが順方向(矢印X)の場合、第
1図〜第3図に示すように内部に配置された球状の逆止
弁体6は流勢に押されて下流側へ移動するが、逆止弁体
6は大口径の分岐孔内のみで移動可能とされているので
流通孔4より斜上方向へ分岐された大口径分岐孔5へと
押し上げられる。In this invention, when the flow is in the forward direction (arrow X), the spherical check valve body 6 arranged inside as shown in FIGS. 1 to 3 is pushed by the flow force and moves to the downstream side. However, since the check valve body 6 is movable only in the large-diameter branch hole, it is pushed up to the large-diameter branch hole 5 that is branched obliquely upward from the flow hole 4.
従って、流通孔4は球体の逆止弁体6で遮断されること
なく、流体は効率良く流れる。Therefore, the flow hole 4 is not blocked by the spherical check valve body 6, and the fluid flows efficiently.
また、管P内に逆流が生じた時は球体の逆止弁6を押し
上げる力が消滅するため、第1図〜第3図に実線で示す
ように球体の逆止弁体6は分岐孔5から流通孔4へ落下
する。このとき分岐孔5の分岐起点における流通孔4の
断面形状が円形とされているので球体の逆止弁体6がこ
の円形断面部Sに隙間無く嵌合し流通孔4を塞ぐので逆
流が防止される。Further, when a reverse flow occurs in the pipe P, the force pushing up the check valve 6 of the sphere disappears, so that the check valve body 6 of the sphere has the branch hole 5 as shown by the solid line in FIGS. 1 to 3. To the distribution hole 4. At this time, since the cross-sectional shape of the flow hole 4 at the branch starting point of the branch hole 5 is circular, the spherical check valve body 6 fits into the circular cross section S without a gap and closes the flow hole 4, thus preventing backflow. To be done.
また、流路の開閉調整を行う場合は第3図に示すように
ハンドル7を操作して開閉弁体2を回転させ、弁箱2の
開口2P、2Pに対する投影開口面積を減少させて流量を調
整する。Further, when the opening / closing adjustment of the flow path is performed, the handle 7 is operated to rotate the opening / closing valve body 2 as shown in FIG. 3 to reduce the projected opening area of the valve box 2 with respect to the openings 2P and 2P to reduce the flow rate. adjust.
また、ハンドル8を180°回転させれば逆止方向を逆に
することが出来る。Further, if the handle 8 is rotated 180 °, the check direction can be reversed.
以上説明したように、この考案によれば流路の有効断面
積を狭めることなく流体の順流が得られると共に、逆止
も確実に行え、さらに開閉弁体の回転により、流量調
整、並びに逆止方向の切換も可能であり、配管敷設時の
弁取付け作業も容易となるなど、種々の実用的効果を有
する。As described above, according to the present invention, the forward flow of the fluid can be obtained without narrowing the effective sectional area of the flow path, and the check can be surely performed. Furthermore, the rotation of the opening / closing valve body allows the flow rate adjustment and the check The direction can be switched, and the valve mounting work at the time of laying the pipe is facilitated, which has various practical effects.
第1図はこの考案の実施例の断面図、第2図は他の実施
例の断面図、第3図はさらに他の実施例を示す断面図、
第4図は実施例の平面図である。1 is a sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of another embodiment, and FIG. 3 is a sectional view showing still another embodiment.
FIG. 4 is a plan view of the embodiment.
Claims (1)
直軸周囲に回転可能に開閉弁体が収納され、該開閉弁体
には前記弁箱に接続される管と連通可能な、前記垂直軸
に直交する流通孔が穿設され、該流通孔より大口径とさ
れた分岐孔が、前記流通孔から斜上方へ連通して分岐さ
れると共に該分岐孔の分岐起点部の前記流通孔断面が円
形とされ、前記分岐孔内には前記流通孔より大径の球状
の逆止用弁体が移動可能に受容されてなることを特徴と
する開閉弁を兼ねる逆止弁。1. An on-off valve body is housed in a valve box such that an inner surface and an outer peripheral surface of the valve box are in close contact with each other so as to be rotatable around a vertical axis, and the on-off valve element can communicate with a pipe connected to the valve box. It should be noted that a through hole perpendicular to the vertical axis is bored, a branch hole having a larger diameter than the through hole is branched from the through hole in a diagonally upward direction, and a branch starting point of the branch hole is formed. A non-return valve that doubles as an on-off valve, characterized in that the flow hole has a circular cross section, and a spherical check valve having a larger diameter than the flow hole is movably received in the branch hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1336990U JPH0743558Y2 (en) | 1990-02-13 | 1990-02-13 | Check valve that doubles as an on-off valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1336990U JPH0743558Y2 (en) | 1990-02-13 | 1990-02-13 | Check valve that doubles as an on-off valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03104569U JPH03104569U (en) | 1991-10-30 |
JPH0743558Y2 true JPH0743558Y2 (en) | 1995-10-09 |
Family
ID=31516786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1336990U Expired - Lifetime JPH0743558Y2 (en) | 1990-02-13 | 1990-02-13 | Check valve that doubles as an on-off valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0743558Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030086033A (en) * | 2002-05-03 | 2003-11-07 | 문희경 | Ball check valve |
KR101645319B1 (en) * | 2015-09-16 | 2016-08-03 | 김용수 | Outsoles for shoes being capable of adjusting partial height |
-
1990
- 1990-02-13 JP JP1336990U patent/JPH0743558Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH03104569U (en) | 1991-10-30 |
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