JPS6018696Y2 - non-return valve - Google Patents
non-return valveInfo
- Publication number
- JPS6018696Y2 JPS6018696Y2 JP12836279U JP12836279U JPS6018696Y2 JP S6018696 Y2 JPS6018696 Y2 JP S6018696Y2 JP 12836279 U JP12836279 U JP 12836279U JP 12836279 U JP12836279 U JP 12836279U JP S6018696 Y2 JPS6018696 Y2 JP S6018696Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- ball
- ball valve
- seat
- hole
- 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
Links
Landscapes
- Check Valves (AREA)
Description
【考案の詳細な説明】 本考案は球弁子を使用した逆止弁に関するものである。[Detailed explanation of the idea] The present invention relates to a check valve using a ball valve.
従来種の逆止弁は第１図の如く弁孔２付弁座５と、これ
に離着座自在な球弁子６と、該球弁子６を弁座５側へ弾
圧する弁ばね７とから構成されていたが、球弁子６の一
部がコイル状の弁ばね７に嵌合されていたため、球弁子
６は同一個所のみが弁座と当接し、局部的な摩耗やスケ
ール等の付着による漏洩が発生していた。As shown in FIG. 1, the conventional check valve includes a valve seat 5 with a valve hole 2, a ball valve 6 that can be seated on and off the valve seat 5, and a valve spring 7 that presses the ball valve 6 toward the valve seat 5. However, since a part of the ball valve 6 was fitted into the coiled valve spring 7, only the same part of the ball valve 6 came into contact with the valve seat, causing local wear, scale, etc. Leakage was occurring due to adhesion.
本考案は、上記の点に鑑み、球弁子と弁ばねとの間に当
板を介装して球弁子と当板とを点接触させることにより
、球弁子の局部的な摩耗を防止し得、更に球弁子及び弁
座のスケールを除去し得る逆止弁を提供しようとするも
のである。In view of the above points, the present invention prevents local wear of the ball valve by interposing a contact plate between the ball valve and the valve spring and bringing the ball valve and the contact plate into point contact. It is an object of the present invention to provide a check valve that can prevent this problem and also eliminate scale on the ball valve and valve seat.
以下に本考案の実施例を図面に基いて説明する。Embodiments of the present invention will be described below with reference to the drawings.
まず、第２図ないし第４図に示す本考案の第一実施例に
ついて説明すると、図中１は弁本体１ａに蓋１ｂが螺着
されて威る弁箱で、該弁本体１ａに流入弁孔２が形成さ
れ、前記Ｍｌｂには流出弁孔３が形成され、前記両弁孔
２，３間に弁室４が形成されている。First, the first embodiment of the present invention shown in FIGS. 2 to 4 will be described. In the figures, 1 is a valve box in which a lid 1b is screwed onto a valve body 1a, and an inflow valve is attached to the valve body 1a. A hole 2 is formed, an outflow valve hole 3 is formed in the Mlb, and a valve chamber 4 is formed between the two valve holes 2 and 3.
そして、前記流入弁孔２の弁室側周壁に弁座５が形成さ
れ、該弁座５に離着座自在な球弁子６及び該球弁子を前
記弁座側へ弾圧するコイル状の弁ばね７が前記弁室４に
内装され、該弁ばね７と前記球弁子６との間に該球弁子
６と一点で接触するように当板８が介装されている。A valve seat 5 is formed on the valve chamber side circumferential wall of the inflow valve hole 2, a ball valve element 6 that can be seated on and removed from the valve seat 5, and a coiled valve that presses the ball valve element toward the valve seat side. A spring 7 is housed in the valve chamber 4, and a contact plate 8 is interposed between the valve spring 7 and the ball valve 6 so as to be in contact with the ball valve 6 at one point.
なお、前記当板８は、第２，３図の如く、前記弁室４の
室壁に沿って摺動自在とされ、圧力流体が前記流入弁孔
２から流出弁孔３へ流れるように二個の楕円形の通孔９
が穿設され、該当板８の中央部に、体弁子側へ凸部１０
が形成され、該部１０と前記球弁子６とが一点で接触し
ている。The contact plate 8 is slidable along the chamber wall of the valve chamber 4, as shown in FIGS. oval holes 9
is bored, and a convex portion 10 is formed in the center of the corresponding plate 8 toward the body valve element side.
is formed, and the portion 10 and the ball valve 6 are in contact at one point.
また、前記当板８の周縁の弁ばね側にフランジ１１が形
成され、前記弁ばね７は該フランジ１１で囲まれた前記
当板８と前記蓋１ｂの内端面１２との間に介装されてい
る。Further, a flange 11 is formed on the valve spring side of the periphery of the stop plate 8, and the valve spring 7 is interposed between the stop plate 8 surrounded by the flange 11 and the inner end surface 12 of the lid 1b. ing.
なお、前記弁室４は、前記球弁子６が自由に回転できる
ように、その径は該球弁子６の径よりも大径とされ、ま
た前記弁ばね７の弁座側への弾圧力が前記流入弁孔２側
の流体圧力よりも大となったときに、球弁子６を前記弁
座５に容易に押し戻して着座し得るように、流入側弁室
壁には、弁座側へ狭まる傾斜面１３が形成されている。The diameter of the valve chamber 4 is larger than that of the ball valve 6 so that the ball valve 6 can rotate freely, and the valve chamber 4 has a larger diameter than the ball valve 6 so that the ball valve 6 can freely rotate. A valve seat is provided on the inflow side valve chamber wall so that the ball valve 6 can be easily pushed back and seated on the valve seat 5 when the force becomes larger than the fluid pressure on the inflow valve hole 2 side. An inclined surface 13 that narrows toward the side is formed.
上記の如く構成された逆止弁において、流入弁孔２へ圧
力流体が流入すると、流体は弁ばね７に抗して球弁子６
を流出弁孔側へ押圧し、球弁子６を弁座５から離すので
、流体は弁室４内へ流入し、当板８の通孔９を通過して
流出弁孔３から外部へ流出する。In the check valve configured as described above, when pressure fluid flows into the inflow valve hole 2, the fluid resists the valve spring 7 and the ball valve element 6
is pressed toward the outflow valve hole side and the ball valve 6 is separated from the valve seat 5, so the fluid flows into the valve chamber 4, passes through the through hole 9 of the plate 8, and flows out from the outflow valve hole 3. do.
このとき、球弁子６は、圧力流体により当板８の凸部１
０と一点で接触しながら、自重により弁室４の流入側室
壁の傾斜面１３を転動して、第３図の如く室壁下部に位
置する。At this time, the ball valve 6 is moved by the pressure fluid to the convex portion 1 of the contact plate 8.
0 at one point, it rolls on the inclined surface 13 of the inflow side chamber wall of the valve chamber 4 due to its own weight, and is located at the lower part of the chamber wall as shown in FIG.
そして、流入弁孔２の弁室側への圧力が球弁子６を弁座
側へ押戻す圧力よりも小になったとき、弁ばね７は弁座
側へ当板８を弾圧して復帰しようとする。Then, when the pressure on the valve chamber side of the inflow valve hole 2 becomes smaller than the pressure that pushes the ball valve element 6 back toward the valve seat side, the valve spring 7 presses the contact plate 8 toward the valve seat side and returns. try to.
そうすると、球弁子６は当板８の凸部１０と一点で接触
しながら、弁座側へ押圧されるので、球弁子６の流入側
室壁の傾斜面１３を転動しながら上昇して弁座５に着座
する。Then, the ball valve 6 is pressed toward the valve seat while contacting the convex portion 10 of the stop plate 8 at one point, so that the ball valve 6 rises while rolling on the inclined surface 13 of the inflow side chamber wall. It is seated on the valve seat 5.
このように、球弁子６が転動しながら弁の開閉動作を行
うため、球弁子６の局部的な摩耗が防止でき、また球弁
子６及び弁座５のスケールの付着を防止できる。In this way, since the ball valve 6 performs the valve opening and closing operations while rolling, local wear of the ball valve 6 can be prevented, and scale adhesion on the ball valve 6 and the valve seat 5 can be prevented. .
次に第５，６図に示す本考案の第二実施例について説明
すると、これは、流出弁孔３が形成された弁本体１ａに
蓋１ｂが螺着された弁箱１と、弁室４側に傾斜面１３が
形成され前記蓋１ｂの内端面１２と前記弁本体１ａの段
付部１４との間に介装固定された流入弁孔２付弁座５と
、該弁座に離着座自在を球弁子６と、該弁子を弁座側に
弾圧する弁ばね７とミ該弁ばねと前記球弁子６との間に
介装された当板８とから構成されたものである。Next, a second embodiment of the present invention shown in FIGS. 5 and 6 will be described. This includes a valve box 1 in which a lid 1b is screwed onto a valve body 1a in which an outflow valve hole 3 is formed, and a valve chamber 4. A valve seat 5 with an inflow valve hole 2, which has an inclined surface 13 formed on the side thereof and is interposed and fixed between the inner end surface 12 of the lid 1b and the stepped part 14 of the valve body 1a, and a seat that can be separated from the valve seat. It is composed of a flexible ball valve 6, a valve spring 7 that presses the valve against the valve seat, and a stop plate 8 interposed between the valve spring and the ball valve 6. be.
そして、前記当板８は、第６図の如く、四個の円形通孔
９が穿設され、中央部１０ａは周縁部と面一に形成され
、該中央部１０ａで前記球弁子６と一点で接触している
。As shown in FIG. 6, the abutment plate 8 has four circular holes 9 formed therein, and a central portion 10a is formed flush with the peripheral edge, and the ball valve 6 is connected to the central portion 10a. They touch at one point.
また１５は前記弁ばね７の離脱防止用の鍔である。Further, 15 is a collar for preventing the valve spring 7 from coming off.
なお、上記の如く構成された逆止弁における球弁子の作
動状態は既述第一実施例の場合と同様である。The operating state of the ball valve in the check valve constructed as described above is the same as in the first embodiment described above.
以上の説明から明らかな通り、本考案は、弁孔付弁座に
離着座自在な球弁子と、該球弁子を前記弁座側へ弾圧す
る弁ばねとの間に前記球弁子と一点で接触するように当
板が介装されたものであるから、本考案によると、開弁
状態において球弁子が転勤可能となるため、球弁子の局
部的な摩耗を防止でき、また球弁子の転勤で球弁子自体
にスケールが付着し難くし得ると共に弁座に付着したス
ケールを除去できる。As is clear from the above description, in the present invention, the ball valve is placed between a ball valve that can be seated on and taken off from a valve seat with a valve hole, and a valve spring that presses the ball valve toward the valve seat. Since the contact plate is interposed so as to make contact at one point, according to the present invention, the ball valve can be moved when the valve is open, so local wear of the ball valve can be prevented. By relocating the valve valve, it is possible to prevent scale from adhering to the valve valve itself, and to remove scale adhering to the valve seat.
さらに、本考案では弁座部の傾斜面により閉弁時に円滑
で正確な球弁子の着座を補償でき、開弁時には流体が球
弁子とともに当板の通孔以外の部分に衝突して当板を弁
室壁に沿って同姿勢で平行摺動させるので、球弁子の拘
束力は小さくなり球弁子の転勤や弁座の清掃がより円滑
になされるといった優れた効果がある。Furthermore, with the present invention, the inclined surface of the valve seat portion ensures smooth and accurate seating of the ball valve when the valve is closed, and when the valve is opened, the fluid collides with the ball valve against parts other than the through hole of the plate. Since the plate is slid in parallel along the valve chamber wall in the same position, the restraining force on the ball valve is reduced, and there are excellent effects such as smoother transfer of the ball valve and cleaning of the valve seat.
第１図は従来の逆止弁の構造を示す略縦断正面図、第２
図は本考案の第一実施例の逆止弁の閉弁状態を示す縦断
正面図、第３図は同開弁状態を示す縦断正面図、第４図
は同当板の側面図、第５図は本考案の第二実施例を示す
縦断正面図、第６図は同当板の側面図である。
１：弁箱、１ａ：弁本体、１ｂ：蓋、２，３：弁孔、４
：弁室、５：弁座、６：球弁子、７：弁ばね、８：当板
、９：通孔、１３：傾斜面。Figure 1 is a schematic longitudinal sectional front view showing the structure of a conventional check valve;
The figure is a longitudinal sectional front view showing the check valve of the first embodiment of the present invention in the closed state, FIG. 3 is a longitudinal sectional front view showing the check valve in the open state, FIG. 4 is a side view of the check valve, and The figure is a longitudinal sectional front view showing a second embodiment of the present invention, and FIG. 6 is a side view of the same plate. 1: Valve box, 1a: Valve body, 1b: Lid, 2, 3: Valve hole, 4
: Valve chamber, 5: Valve seat, 6: Ball valve, 7: Valve spring, 8: Butting plate, 9: Through hole, 13: Inclined surface.
Claims (1)
側へ弾圧する弁ばねとの間に当板が介設され、該当板に
は、その体弁子側の中央で球弁子と一点で接触する凸部
が形成されると共に弁ばね側の周縁に弁室壁に沿って摺
動自在なフランジが形成されかつ該フランジと凸部の間
には複数個の通孔が穿設され、さらに流入側弁室壁には
弁座側へ狭まる傾斜面が形成されたことを特徴とする逆
止弁。A contact plate is interposed between a ball valve that can be freely seated and removed from a valve seat with a valve hole, and a valve spring that presses the ball valve toward the valve seat. A convex portion that contacts the ball valve at one point is formed at the center, and a flange that is slidable along the valve chamber wall is formed at the periphery on the valve spring side, and a plurality of flange portions are formed between the flange and the convex portion. 1. A check valve characterized in that a through hole is formed, and an inclined surface narrowing toward a valve seat is formed on an inflow side valve chamber wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12836279U JPS6018696Y2 (en) | 1979-09-14 | 1979-09-14 | non-return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12836279U JPS6018696Y2 (en) | 1979-09-14 | 1979-09-14 | non-return valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5644258U JPS5644258U (en) | 1981-04-21 |
| JPS6018696Y2 true JPS6018696Y2 (en) | 1985-06-06 |
Family
ID=29360191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12836279U Expired JPS6018696Y2 (en) | 1979-09-14 | 1979-09-14 | non-return valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6018696Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5883720U (en) * | 1981-12-02 | 1983-06-07 | ソニー株式会社 | switch operation device |
| US7654283B2 (en) * | 2003-10-21 | 2010-02-02 | Seiko Epson Corporation | Check valve and pump including check valve |
-
1979
- 1979-09-14 JP JP12836279U patent/JPS6018696Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5644258U (en) | 1981-04-21 |
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