JPH0554874U - Resin valve body for butterfly valve - Google Patents
Resin valve body for butterfly valveInfo
- Publication number
- JPH0554874U JPH0554874U JP11330491U JP11330491U JPH0554874U JP H0554874 U JPH0554874 U JP H0554874U JP 11330491 U JP11330491 U JP 11330491U JP 11330491 U JP11330491 U JP 11330491U JP H0554874 U JPH0554874 U JP H0554874U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- resin
- butterfly
- section
- 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.)
- Pending
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Abstract
(57)【要約】
【目的】 材料強度の不足を補って、金属弁体と実質的
に置換可能な弁体支持強度を有するバタフライバルブ用
樹脂弁体を提供する。
【構成】 ＰＰＳ等の樹脂材料で一体成形される樹脂弁
体であって、ボス部３の両端部から径方向に穿設される
弁軸穴４を、六角形断面を有する１本の弁軸６が貫通さ
れる六角形断面の貫通穴に形成する。
(57) [Abstract] [PROBLEMS] To provide a resin valve element for a butterfly valve having a valve element supporting strength capable of substantially replacing a metal valve element by compensating for the lack of material strength. A resin valve body integrally molded with a resin material such as PPS, wherein one valve shaft having a hexagonal cross section has a valve shaft hole 4 bored radially from both ends of a boss portion 3. 6 is formed in a through hole having a hexagonal cross section.
Description
【０００１】[0001]
本考案はバタフライバルブ用の樹脂弁体に関する。 The present invention relates to a resin valve body for a butterfly valve.
【０００２】[0002]
現在、バタフライバルブ用の弁体には、耐薬品性等が必要な特殊用途で樹脂製 （ＦＲＰや塩化ビニル）のものが使用されている例を除き、一定の弁体強度と耐 圧性を充足する金属製（ステンレス鋼や黄銅）のものが普通に用いられている。 At present, the valve element for butterfly valves satisfies certain valve element strength and pressure resistance, except for the case where resin (FRP or vinyl chloride) is used for special purposes where chemical resistance is required. Metallic materials (stainless steel and brass) are commonly used.
【０００３】 図５〜図８は、配管流路の流量制御に一般的に適用可能なバタフライバルブに 組み込まれている金属弁体の一例を示している。5 to 8 show an example of a metal valve body incorporated in a butterfly valve that is generally applicable to flow rate control of a pipe flow path.
【０００４】 この金属弁体１１では、図示しないバルブ本体（弁箱）内周のシートリングと 摺接する周縁部の両面に環状リブ１２、１２を設けると共に、上下両端部に設け たボス部１３Ａ、１３Ｂから弁体中心を通る径方向に向けて各々弁軸穴１４Ａ、 １４Ｂが穿設され、弁体取付時には、図８に示すように、各弁軸穴１４Ａ、１４ Ｂに弁軸１６Ａ、１６Ｂを挿着して外周のバルブ本体（図示せず）に軸回りで揺 動自在に支持されるようになっている。In this metal valve body 11, annular ribs 12, 12 are provided on both sides of a peripheral edge portion which is in sliding contact with a seat ring on the inner periphery of a valve body (valve box) not shown, and boss portions 13A provided at both upper and lower end portions, Valve shaft holes 14A, 14B are bored from 13B in the radial direction passing through the center of the valve body, and when mounting the valve body, as shown in FIG. 8, the valve shafts 16A, 16B are provided in the respective valve shaft holes 14A, 14B. Is attached and supported by a valve body (not shown) on the outer periphery so as to be swingable around an axis.
【０００５】[0005]
しかしながら、現状の金属弁体には、その製造面と重量面で次のような問題点 が見られる。 However, the current metal valve discs have the following problems in terms of manufacturing and weight.
【０００６】 即ち、この種の金属弁体は、精密鋳造の工程と機械加工の工程を経て製造され るが、加工が複雑で工数が多いため生産性の低いものとならざるを得ず、弁体コ ストも割高につくのが第１の問題である。また、金属弁体であると、比重が大き く弁体重量が大きくなるため、バタフライバルブの搬送や高所据付時の作業に不 便を伴うことが第２の問題として挙げられる。That is, this type of metal valve body is manufactured through a process of precision casting and a process of machining, but since the process is complicated and the number of steps is large, the productivity is inevitably low. The first problem is that physical costs are also relatively high. A second problem is that a metal valve body has a large specific gravity and a large valve body weight, which causes inconvenience in transportation of butterfly valves and work during installation in high places.
【０００７】 そこで、バタフライバルブ用弁体として、成形が容易で、しかも比重の小さい 樹脂材料を用いることが考えられるが、上述した現状の弁体支持構造のままで樹 脂化したのでは材料強度が不足して、一般的なバタフライバルブの用途での使用 に耐える弁体の支持強度を確保することができない。Therefore, it is conceivable to use a resin material that is easy to mold and has a small specific gravity as the valve element for the butterfly valve. However, if the resin material is resinized with the current valve element support structure as described above, the material strength is increased. However, it is not possible to secure the support strength of the valve body that can withstand use in general butterfly valve applications.
【０００８】 本考案は、かかる現状の問題点に対処すべく、バルブ本体に対する弁体の取付 構造を改良することにより弁体の樹脂化を実質的に可能ならしめるようにしたバ タフライバルブ用の樹脂弁体を提供するものである。In order to cope with the above-mentioned problems of the present invention, the present invention is for a butterfly valve in which the valve body is substantially resinified by improving the mounting structure of the valve body on the valve body. The present invention provides a resin valve body.
【０００９】[0009]
本考案に基づくバタフライバルブ用樹脂弁体は、材料強度や成形性に富むＰＰ Ｓ等の樹脂材料で一体成形される樹脂弁体であって、両端部から径方向に穿設さ れる弁軸穴を多角形断面の貫通穴に形成したものからなっている。 A resin valve body for a butterfly valve according to the present invention is a resin valve body integrally molded with a resin material such as PPS having high material strength and moldability, and has a valve shaft hole bored from both ends in a radial direction. Is formed in a through hole having a polygonal cross section.
【００１０】[0010]
この樹脂弁体では、その両端部を径方向に貫通している弁軸穴に、該弁軸穴と 対応する多角形断面の弁軸を通してバルブ本体に支持させることができる。そし て、多角形断面の弁軸穴に対応する断面形状を有した一本の弁軸を貫通させるこ とにより、弁軸から弁体に弁体開閉時のトルク伝達が円滑に行われると共に、弁 体に掛かる流体圧力を弁軸に支持させて樹脂弁体を補強することができるものと なる。 In this resin valve body, the valve body can be supported by the valve shaft hole having the polygonal cross section corresponding to the valve shaft hole through the valve shaft hole penetrating both ends thereof in the radial direction. Then, by penetrating one valve shaft having a cross-sectional shape corresponding to the valve shaft hole having a polygonal cross-section, torque transmission from the valve shaft to the valve body at the time of opening / closing the valve body is smoothly performed, and The fluid pressure applied to the valve body can be supported on the valve shaft to reinforce the resin valve body.
【００１１】[0011]
図１〜図４は、前記従来例（図５〜図８）と対比されるバタフライバルブ用樹 脂弁体の実施例を図示している。 1 to 4 illustrate an embodiment of a butterfly valve resin valve body, which is compared with the conventional example (FIGS. 5 to 8).
【００１２】 樹脂弁体１には、周縁部の両面に環状リブ２、２が設けられると共に、弁体中 心部には径方向で上下両端部に連なるボス部３が設けられ、このボス部３の両端 部から径方向に穿設される弁軸穴４が、弁体１を上下に貫通する六角形断面を有 した貫通穴に形成されている。また、樹脂弁体１の両面には、上下両端部の近傍 で、新たに付加した弁軸穴４と直交する方向の横リブ５Ａ、５Ｂが上下対称位置 に設けられている。The resin valve body 1 is provided with annular ribs 2, 2 on both sides of the peripheral edge portion, and at the center of the valve body is provided a boss portion 3 continuous to the upper and lower end portions in the radial direction. A valve shaft hole 4 bored in the radial direction from both ends of 3 is formed in a through hole having a hexagonal cross section that vertically penetrates the valve body 1. Further, lateral ribs 5A and 5B in a direction orthogonal to the newly added valve shaft hole 4 are provided at vertically symmetrical positions on both surfaces of the resin valve body 1 in the vicinity of both upper and lower ends.
【００１３】 この樹脂弁体１は、射出成形等により、六角形断面の弁軸穴４の部分を含めて 弁体全体が樹脂材料により一体成形されている。なお、弁体成形材料には、成形 性が良好で、剛性、耐熱性、耐薬品性、寸法安定性等に富んだＰＰＳ（ポリフェ ニレンスルフィド）が賞用される。The resin valve body 1 is integrally molded by injection molding or the like with the resin material including the valve shaft hole 4 having a hexagonal cross section. As the valve body molding material, PPS (polyphenylene sulfide), which has good moldability and is excellent in rigidity, heat resistance, chemical resistance, dimensional stability, etc., is preferred.
【００１４】 この樹脂弁体１では、図４に示すように、ボス部３の両端部を貫通している弁 軸穴４に、該弁軸穴４と対応する六角形断面の弁軸６を通して、図示しないバル ブ本体に支持させることができる。すなわち、従来の金属弁体１１が上下に分か れた２本の弁軸１６Ａ、１６Ｂで両端部が局部的に支持されるのに対して、この 樹脂弁体１では、弁軸穴４に対応する六角形断面を有した１本の弁軸６により、 回転方向での係合状態で貫通支持されることになる。In this resin valve body 1, as shown in FIG. 4, a valve shaft 6 having a hexagonal cross section corresponding to the valve shaft hole 4 is passed through a valve shaft hole 4 penetrating both ends of the boss portion 3. It can be supported by a valve body (not shown). That is, while the conventional metal valve body 11 is locally supported at both ends by two vertically separated valve shafts 16A and 16B, in the resin valve body 1, the valve shaft hole 4 is A single valve stem 6 having a corresponding hexagonal cross-section will be pierced and supported in engagement in the rotational direction.
【００１５】 そして、上記の支持構造を採用することにより、弁軸６から弁体１に弁体開閉 時のトルク伝達が円滑に行われると共に、弁体１に掛かる流体圧力を弁軸６に受 担させて支持させることができるため、横リブ５Ａ、５Ｂの追加による弁体自体 の剛性アップとも相俟って、弁体１に材料強度の低下を補うのに十分な強度を持 たせることが可能となる。言い換えると、弁軸６による補強効果がプラスされる ことにより、弁体材料強度の不足を補って実質的に使用に耐える支持強度を有し た樹脂弁体が提供できるものとなる。By adopting the above-mentioned support structure, the torque is smoothly transmitted from the valve shaft 6 to the valve body 1 when the valve body is opened and closed, and the fluid pressure applied to the valve body 1 is received by the valve shaft 6. Since it can be supported by being supported, it is possible to provide the valve body 1 with sufficient strength to compensate for the decrease in material strength in combination with the rigidity increase of the valve body itself due to the addition of the lateral ribs 5A and 5B. It will be possible. In other words, since the reinforcing effect of the valve shaft 6 is added, it is possible to provide a resin valve body having a supporting strength that substantially compensates for the lack of strength of the valve body material.
【００１６】 なお、弁体１の両面に設けられる横リブ５Ａ、５Ｂは、弁体成形時に同時成形 することで、簡単に弁体１の剛性増大に寄与することができ、しかもバルブ使用 状態では、流線と平行な方向に配列されるため、リブ追加に伴う流体抵抗の増加 も僅かで済む。この横リブ５Ａ、５Ｂは、流体圧の小さいバルブ用途では、省略 することもできる。The lateral ribs 5A and 5B provided on both sides of the valve body 1 can easily contribute to increasing the rigidity of the valve body 1 by being simultaneously molded at the time of molding the valve body, and moreover, when the valve is in use. , Since it is arranged in the direction parallel to the streamline, the increase of the fluid resistance due to the addition of the ribs will be small. The lateral ribs 5A and 5B can be omitted in a valve application where the fluid pressure is small.
【００１７】 その他、弁体１のボス部３に貫通して設けられる弁軸穴４については、成形時 にインサートされた角形パイプ部品により成形することも可能である。In addition, the valve shaft hole 4 provided through the boss portion 3 of the valve body 1 can be formed by a rectangular pipe part that is inserted at the time of forming.
【００１８】[0018]
以上のように、本考案に係るバタフライバルブ用樹脂弁体では、両端部から径 方向に貫通される多角形断面の弁軸穴に多角形断面の弁軸を貫通させて、弁体を 弁軸で補強できるようにしているため、弁体材料強度の低下を補って、バタフラ イバルブ一般の用途に耐える弁体強度を確保することができる。そして、強度面 で実質的に置換可能な樹脂弁体が提供されることに伴い、従来の金属弁体で指摘 された問題点を解消することができる。即ち、弁体の生産性が低く、弁体コスト が高くつく問題が改善され、弁体の軽量化によりバルブの運搬や高所据付の便が 改善されるものとなる。 As described above, in the resin valve element for butterfly valves according to the present invention, the valve element is inserted into the valve shaft hole of the polygonal cross section through the valve shaft hole of the polygonal cross section that is radially penetrated from both ends. Since it is possible to reinforce the valve body, it is possible to compensate for the decrease in the strength of the valve body material and to secure the strength of the valve body that can withstand general uses of butterfly valves. With the provision of the resin valve body that can be substantially replaced in terms of strength, the problems pointed out in the conventional metal valve body can be solved. That is, the problem that the productivity of the valve body is low and the cost of the valve body is high is solved, and the weight of the valve body reduces the transportation of the valve and the convenience of installation at high places.
【図１】実施例を示すバタフライバルブ用樹脂弁体の正
面図である。FIG. 1 is a front view of a resin valve element for a butterfly valve showing an embodiment.
【図２】図１の中央部横断面図である。FIG. 2 is a transverse cross-sectional view of the central portion of FIG.
【図３】図１の半部断面側面図である。FIG. 3 is a side view of a half section of FIG. 1.
【図４】図１のバタフライバルブの弁軸取付状態の概要
を示す斜視図である。4 is a perspective view showing an outline of a valve shaft mounting state of the butterfly valve of FIG. 1. FIG.
【図５】従来例を示すバタフライバルブ用金属弁体の正
面図である。FIG. 5 is a front view of a metal valve element for a butterfly valve showing a conventional example.
【図６】図５の中央部横断面図である。6 is a transverse cross-sectional view of the central portion of FIG.
【図７】図５の半部断面側面図である。7 is a side view of the half section of FIG.
【図８】図５のバタフライバルブの弁軸取付状態の概要
を示す斜視図である。8 is a perspective view showing an outline of a valve shaft mounting state of the butterfly valve of FIG.
１ バタフライバルブ用樹脂弁体 ２ 環状リブ ３ ボス部 ４ 弁軸穴 ５Ａ、５Ｂ 横リブ ６ 弁軸 １１ バタフライバルブ用金属弁体 １２ 環状リブ １３Ａ、１３Ｂ ボス部 １４Ａ、１４Ｂ 弁軸穴 １６Ａ、１６Ｂ 弁軸 1 Resin Valve Body for Butterfly Valve 2 Annular Rib 3 Boss Section 4 Valve Shaft Hole 5A, 5B Lateral Rib 6 Valve Shaft 11 Metal Valve Body for Butterfly Valve 12 Annular Rib 13A, 13B Boss Section 14A, 14B Valve Shaft Hole 16A, 16B Valve axis
Claims (1)
って、両端部から径方向に穿設される弁軸穴を多角形断
面の貫通穴に形成したことを特徴とするバタフライバル
ブ用樹脂弁体。1. A butterfly valve, which is a resin valve body integrally molded of a resin material, wherein valve shaft holes formed in the radial direction from both ends are formed in through holes having a polygonal cross section. Resin valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11330491U JPH0554874U (en) | 1991-12-26 | 1991-12-26 | Resin valve body for butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11330491U JPH0554874U (en) | 1991-12-26 | 1991-12-26 | Resin valve body for butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0554874U true JPH0554874U (en) | 1993-07-23 |
Family
ID=14608838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11330491U Pending JPH0554874U (en) | 1991-12-26 | 1991-12-26 | Resin valve body for butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0554874U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4713971B2 (en) * | 2005-07-26 | 2011-06-29 | 東洋バルヴ株式会社 | Butterfly valve |
| JP2012127423A (en) * | 2010-12-15 | 2012-07-05 | Hitachi Industrial Equipment Systems Co Ltd | Flow passage switching damper device |
| KR102220135B1 (en) * | 2019-10-16 | 2021-02-25 | (주) 다리온 | Balanced Exhaust Valve for Corrosive Gas, Acid and Alkaline Gas |
| KR102243387B1 (en) * | 2019-10-16 | 2021-04-22 | (주) 다리온 | Balanced Exhaust Valve for Hydrofluoric Gas |
-
1991
- 1991-12-26 JP JP11330491U patent/JPH0554874U/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4713971B2 (en) * | 2005-07-26 | 2011-06-29 | 東洋バルヴ株式会社 | Butterfly valve |
| JP2012127423A (en) * | 2010-12-15 | 2012-07-05 | Hitachi Industrial Equipment Systems Co Ltd | Flow passage switching damper device |
| KR102220135B1 (en) * | 2019-10-16 | 2021-02-25 | (주) 다리온 | Balanced Exhaust Valve for Corrosive Gas, Acid and Alkaline Gas |
| KR102243387B1 (en) * | 2019-10-16 | 2021-04-22 | (주) 다리온 | Balanced Exhaust Valve for Hydrofluoric Gas |
| JP2021063588A (en) * | 2019-10-16 | 2021-04-22 | ダリオン インコーポレイテッド | Balanced exhaust valve for corrosive gas and acidic and alkaline gas |
| JP2021063589A (en) * | 2019-10-16 | 2021-04-22 | ダリオン インコーポレイテッド | Balanced exhaust valve for hydrofluoric acid gas |
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