JPH02120580A - Butterfly valve and its manufacture - Google Patents
Butterfly valve and its manufactureInfo
- Publication number
- JPH02120580A JPH02120580A JP27268688A JP27268688A JPH02120580A JP H02120580 A JPH02120580 A JP H02120580A JP 27268688 A JP27268688 A JP 27268688A JP 27268688 A JP27268688 A JP 27268688A JP H02120580 A JPH02120580 A JP H02120580A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- lining layer
- valve stem
- main body
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 229920001971 elastomer Polymers 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000000806 elastomer Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 claims 1
- 239000011593 sulfur Substances 0.000 claims 1
- 210000004907 gland Anatomy 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000003566 sealing material Substances 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 8
- 238000005266 casting Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、鋼管の如き中空円筒状金属管体により形成
される弁本体を備えたバタフライ弁及びその製造方法に
関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a butterfly valve having a valve body formed of a hollow cylindrical metal pipe such as a steel pipe, and a method for manufacturing the butterfly valve.
（従来の技術）
従来、バタフライ弁の弁本体は、最も一般的には鋳造に
よって形成されており、配管パイプとの接続形態によっ
てフランジ型、ラグ型、ウェハー型等の構造があるが、
いずれにしても重量があり、取り扱いに不便であると共
に、配管パイプのフランジへの接続のためにボルト・ナ
ツトを必要とし、且配管パイプとをバタフライ弁本体と
の芯出しを正確にしなければならない為、配管の作業性
が悪いという問題があった。又、鋳造加工は、作業性、
作業環境等の面で問題点が多く好しい加工手段ではない
。(Prior Art) Conventionally, the valve body of a butterfly valve is most commonly formed by casting, and there are flange-type, lug-type, wafer-type, etc. structures depending on the connection form with the piping.
In any case, it is heavy and inconvenient to handle, and requires bolts and nuts to connect the piping to the flange, and the piping must be accurately aligned with the butterfly valve body. Therefore, there was a problem that the workability of piping was poor. In addition, casting processing requires workability,
It is not a preferred processing method as it has many problems in terms of the working environment.
更に、鋳造品は重量がある関係上、弁本体内に配設され
るシートリングを金型を用いてライニング加工すること
が困難であり、一般には嵌め込み方式により装着されて
いる。しかしなから、嵌め込み方式では、シートリング
が脱落する危険性があるろ、高流速、高差圧、高温など
の流体条件では使用出来なかったり、或は発錆、腐蝕の
危険性があった。Furthermore, due to the weight of cast products, it is difficult to line the seat ring disposed inside the valve body using a mold, and the seat ring is generally installed by fitting. However, with the fit-in method, there is a risk that the seat ring will fall off, it cannot be used in fluid conditions such as high flow velocity, high differential pressure, and high temperature, or there is a risk of rusting and corrosion.
特に近年流体輸送の効率化のために多用されて来ている
小口径弁にあっては、シートリングを嵌め込みにより装
着した場合、シートリング脱落の危険が高く、実際上採
用出来ないという問題があった。Particularly in the case of small-diameter valves, which have been widely used in recent years to improve the efficiency of fluid transport, there is a problem that if the seat ring is fitted by fitting, there is a high risk of the seat ring falling off, making it practically impossible to use it. Ta.
〈発明が解決しようとする課題）
この発明は、従来の鋳造加工により提供されるバタフラ
イ弁にみられた問題点を解決せんとするものであり、弁
本体を鋼管の如き中空円筒状金属管体で形成せんとする
ものである。(Problems to be Solved by the Invention) This invention aims to solve the problems seen in butterfly valves provided by conventional casting processing, and the valve body is made of a hollow cylindrical metal pipe such as a steel pipe. It is intended to be formed by
（課題を解決するための手段）
上記課題を解決するために、第１の発明が採った手段は
、中空円筒状金属管体からなる弁本体と、該弁本体の内
周面の一部を被覆するエラストマー材料からなるライニ
ング層と、弁本体内に回動自在に軸支された円板状の弁
体とからなり、弁本体の同一直径方向対向位置に軸孔を
形成し、該軸孔に連続して弁棒ガイドを弁本体に固着し
、前記弁体を軸支する弁棒を弁棒ガイドに軸装し、一方
の弁棒を弁棒ガイドから外方へ延出して駆動手段に連結
自在にすると共に、前記ライニング層に弁体の外周面が
接離する弁座と形成したことを特徴とする。(Means for Solving the Problems) In order to solve the above problems, the first invention has a valve body made of a hollow cylindrical metal tube and a part of the inner peripheral surface of the valve body. It consists of a lining layer made of a covering elastomer material and a disc-shaped valve body rotatably supported within the valve body, and a shaft hole is formed at the same diametrically opposing position in the valve body, and the shaft hole Continuously, a valve stem guide is fixed to the valve body, a valve stem that pivotally supports the valve body is mounted on the valve stem guide, and one of the valve stems is extended outward from the valve stem guide to be connected to the driving means. The valve seat is characterized in that it is freely connectable and is formed with a valve seat on which the outer circumferential surface of the valve body comes into contact with and separates from the lining layer.
又、第２の発明は、第１の発明のバタフライ弁を製造す
る方法に関するものであって、中空円筒状金属管体の直
径方向対向位置に形成された軸孔に連続して外方へ延び
出す管状の弁棒ガイドを固着して弁本体を形成し、該弁
本体の外径寸法に合致するフランジ部を有する２分割の
金型を弁本体の両端開口から挿着してセラｌ−Ｌ、金型
と弁本体の内周面の一部との間に形成される空間に未加
硫のライニング材料を充填し、加熱加硫して弁座３λむ
ライニング層を形成するようにしたことを特徴とする。Further, a second invention relates to a method for manufacturing the butterfly valve of the first invention, wherein the butterfly valve extends outward continuously from the shaft hole formed in the diametrically opposed position of the hollow cylindrical metal tube. A tubular valve stem guide is fixed to form a valve body, and a two-part mold having a flange portion that matches the outer diameter of the valve body is inserted from openings at both ends of the valve body to form a cellar L-L. The space formed between the mold and a part of the inner circumferential surface of the valve body is filled with an unvulcanized lining material, and heated and vulcanized to form a lining layer covering 3λ of the valve seat. It is characterized by
（実施例）
以下に図面を参照しつつ、この発明の好しい実施例を詳
細に説明する０図において（１）は、弁本体であって、
鋼管を所定長さに切断したものからなる０種々の配管、
例えば水道用、水輸送用、加熱炉用等に用いられる鋼管
は、使用温度や材質の相違にかかＪ）らず一定の外径寸
法に規格が統一されている。したがって、かかる配管用
鋼管を弁本体として用いることにより、配管とバタフラ
イ弁との接続において外径寸法が一致する結果、芯出し
がきわめて簡単になると共に、従来の如きボルト締め手
段による必要がなく、バンド方式やジヨイント方式で接
続することが可能となる。(Example) Referring to the drawings below, in Figure 0, a preferred embodiment of the present invention will be explained in detail, (1) is a valve body,
Various types of piping made of steel pipes cut to predetermined lengths,
For example, steel pipes used for water supply, water transportation, heating furnaces, etc. are standardized to have a constant outer diameter regardless of differences in operating temperature or material. Therefore, by using such piping steel pipes as the valve body, the outer diameter dimensions match in the connection between the piping and the butterfly valve, making centering extremely easy and eliminating the need for conventional bolt tightening means. It is possible to connect using the band method or joint method.
弁本体（１）の内周面の一部はゴム等のエラストマー材
料からなるライニングＮ（２）で被覆される。A portion of the inner peripheral surface of the valve body (1) is covered with a lining N (2) made of an elastomer material such as rubber.
該ライニング層（２）の内周面中央部には、円周方向に
延びる弁座（３）が形成され、円板状の弁体（４〉の外
周縁が接離して、弁の開閉をもたらす。A valve seat (3) extending in the circumferential direction is formed in the center of the inner peripheral surface of the lining layer (2), and the outer peripheral edge of the disc-shaped valve body (4) comes into contact with and separates from the valve seat (4) to open and close the valve. bring.
弁体（４）は、従来周知の手段例えば鋳造、鍛造等の加
工手段で形成された円板状のＩ造を有しており、同一直
径方向に対向して延び出す弁棒（５）（６）により弁本
体（１）に回動自在に軸支される。The valve body (4) has a disc-shaped I structure formed by a conventionally known processing method such as casting or forging, and the valve stem (5) extends oppositely in the same diameter direction. 6) is rotatably supported on the valve body (1).
一方の弁棒（５）は、弁本体（１）外に延び出して、所
望の駆動手段〈図示せず〉に連結され、弁体（４）に回
転力を伝達する。弁体（４）と、２本の弁棒（５）（６
）とは、四角形、六角形等の角接合やキー接合、或はテ
ーパーポル１〜・ナラ１〜等の適宜の結合手段により結
合される。（７）、（８）は、弁棒（５）（６）を軸挿
する耐蝕製の弁棒ガイドであって、弁本体（１）の直径
方向対向位置に形成された軸孔（９）に弁本体（１）の
内方から挿嵌され、フランジ部（７ａ）（８ａ）を弁本
体（１）の内周面に当接係止して保持されつつ、溶接等
の手段で固着される。弁棒ガイド（７）（８）には、管
状のグランド部材（１０） （１１）が外挿され、管状
グランド部材（１０）（１１）の一端はそれぞれ弁本体
（１）の外周面に溶接等の手段で固着される。駆動側の
弁棒（５）を軸挿する管状グランド部材（１０）は、外
端を開放され、弁棒（５）が駆動手段との連結のために
、外方へ延び出すのを許容している。他方の管状グラン
ド部材（１１）は、その外端をシール材（１３）を介し
て蓋板（１２）で密閉されており、他方の弁棒〈６）は
、この管状グランド部材（１１）内において終端してい
る。One valve stem (5) extends outside the valve body (1) and is connected to a desired driving means (not shown) to transmit rotational force to the valve body (4). Valve body (4) and two valve stems (5) (6
) are joined by an appropriate joining means such as square joints, hexagonal joints, key joints, taper poles 1~, Nara 1~, etc. (7) and (8) are corrosion-resistant valve stem guides into which the valve stems (5) and (6) are inserted, and the shaft holes (9) are formed at diametrically opposed positions in the valve body (1). The valve body (1) is inserted into the valve body (1) from the inside, and the flanges (7a) and (8a) are held in contact with the inner peripheral surface of the valve body (1) and fixed by means such as welding. Ru. Tubular gland members (10) (11) are fitted onto the valve stem guides (7) (8), and one end of each of the tubular gland members (10) (11) is welded to the outer peripheral surface of the valve body (1). It is fixed by means such as. A tubular gland member (10) into which the drive-side valve stem (5) is inserted has an open outer end to allow the valve stem (5) to extend outward for connection with the drive means. ing. The other tubular gland member (11) has its outer end sealed with a lid plate (12) via a sealing material (13), and the other valve stem (6) is inside this tubular gland member (11). It terminates at.
駆動側の管状グランド部材（１０）の外端部には、弁棒
（５）の安定と回転の円滑性を保障するために弁棒ガイ
ド（１４）が嵌挿される。A valve stem guide (14) is inserted into the outer end of the drive-side tubular gland member (10) to ensure stability and smooth rotation of the valve stem (5).
弁棒（５）と弁棒ガイド（１４）との間をシールするた
めに、Ｏリング（１５）等のシール手段（１５）が適用
される。A sealing means (15), such as an O-ring (15), is applied to seal between the valve stem (5) and the valve stem guide (14).
第２図を９照して、弁本体（１）の内周面の一部に弁座
（３）を有するライニングＮ（２）を形成する方法を説
明する。ライニング層（２）は、金型を用いて未加硫ゴ
ム等のエラストマー材料を圧入し、加硫して、弁本体（
１）の内周面に焼付ることにより形成される。With reference to FIG. 2, a method for forming a lining N (2) having a valve seat (3) on a part of the inner peripheral surface of the valve body (1) will be explained. The lining layer (2) is formed by press-fitting an elastomer material such as unvulcanized rubber using a mold and vulcanizing it.
1) is formed by being baked onto the inner circumferential surface of.
成形用金型は、第１及び第２の２個の金型（１６，１７
）からなり、第１の金型（１６）は、上部外周面に弁座
成形部（１８）を有した円筒体（１９）と、該円筒体＜
１９）の下部に断面口状の溝部（２０）を介して連続す
るフランジ部（２１）とを備えた形状を有し、弁座成型
部（１８）と円筒体（１９）とは所定形状及び肉厚の弁
座（３）と弁本体内周面のライニング層（２）を形成す
る。The molding mold includes two molds, a first mold and a second mold (16, 17).
), the first mold (16) includes a cylindrical body (19) having a valve seat molding part (18) on the upper outer peripheral surface, and a cylindrical body <
The valve seat molding part (18) and the cylindrical body (19) have a predetermined shape and a flange part (21) that is continuous with the lower part of the valve seat part (19) through a groove part (20) having a cross-sectional opening shape. A thick valve seat (3) and a lining layer (2) on the inner peripheral surface of the valve body are formed.
弁座成形部（１８）には、直径方向に延びる治具挿通孔
（２２）が貫通して形成される。又、フランジ部（２１
）の内径は、弁本体（１）の外径と略一致しており５第
１金型（１６）をセラｌ−したとき、金型のガタ付きが
発生するおそれはない０図に示すように、治具（２３）
を弁棒ガイド（７）＜８ ）を介して、治具挿通孔（２
２）に挿入するとき、弁本体（１）の端部（１′）と溝
部（２０）の底面との間に所定の間隔が形成される。A jig insertion hole (22) extending diametrically is formed through the valve seat molding portion (18). In addition, the flange part (21
) is approximately the same as the outer diameter of the valve body (1), so there is no risk of the mold wobbling when the first mold (16) is sealed. , jig (23)
into the jig insertion hole (2) through the valve stem guide (7) <8).
2), a predetermined distance is formed between the end (1') of the valve body (1) and the bottom surface of the groove (20).
第２の金型（１７）は、前記第１の金型（１６）の上に
積み重ねられる円筒体（２４）と、該円筒体（２４）の
上部に断面口状の溝部（２５）を介して連続するフラン
ジ部＜２６）を備える０円筒体（２４）＝溝部（２５）
並びにフランジ部（２６）は、前記第１の金型の円筒体
（１９）、溝部（２０）、７ランノ部（２１）と同様の
機能を有Ｌ、弁本体（１）の軸方向長さと外径とを規制
する。The second mold (17) includes a cylindrical body (24) stacked on top of the first mold (16), and a groove (25) with a cross-sectional opening formed in the upper part of the cylindrical body (24). Cylindrical body (24) with continuous flange portion <26) = groove portion (25)
In addition, the flange portion (26) has the same functions as the cylindrical body (19), the groove portion (20), and the seven-runway portion (21) of the first mold. The outer diameter is regulated.
第２の金型（１７）の下部外周面には、前記第１の金型
（１６）の弁座成型部（１８）に連続するライニング層
成型部（２７）が形成され、第１、第２の金型（１６）
（１７）は、弁座部を外れた位置においてパーデイング
ライン（２８）を成すように接合される。A lining layer molded part (27) that is continuous with the valve seat molded part (18) of the first mold (16) is formed on the lower outer circumferential surface of the second mold (17), and 2 molds (16)
(17) are joined so as to form a purging line (28) at a position away from the valve seat.
治具（２３）を弁棒ガイド（７）（８’）から治具挿通
孔（１９）に挿通しつつ第２図に示すように第１、第２
の金型（１６）（１７）を順次積み重ねて、弁本体（１
）にセットするとき、第１、第２の金型（１６）（１７
）と弁本体（１）とは、フランジ部＜２１）＜２６）と
弁本体（１）の外周面との挿嵌関係により、正確に位置
を設定されて組み合わされ、第１、第２の金型（１６０
１））と弁本体（１）の内周面との間にライニング層を
成型するための所要の間隔が形成される。While inserting the jig (23) from the valve stem guide (7) (8') into the jig insertion hole (19), as shown in FIG.
The molds (16) and (17) are stacked one after another to form the valve body (1
), the first and second molds (16) (17
) and the valve body (1) are accurately positioned and assembled due to the fitting relationship between the flange portion < 21) < 26) and the outer peripheral surface of the valve body (1), and the first and second Mold (160
A required interval for molding the lining layer is formed between the valve body (1) and the inner circumferential surface of the valve body (1).
実際のライニングＮ（２）の成形に際しては、先ず第１
金型（１６）を弁本体（１）にセットした後、ライニン
グ層成型用空間内に未加硫のエラストマー材料を圧入し
、しかる後、第２の金型（１７）をセラ■・し、加熱し
て加硫を行うようにする。加硫完了後、第２の金型（１
７）ｅ上方へ取り出し、治具（２３）を抜いて、第１の
金型（１６）からライニング層（２）が形成された弁本
体く１）を上方へ抜き出す。その後、正大時の余分のエ
ラストマーが弁本体く１）と金型（１６０１７）の隙間
にはみ出しているので、これを切除して完成品を得る。When actually forming the lining N(2), first
After the mold (16) is set in the valve body (1), an unvulcanized elastomer material is press-fitted into the space for molding the lining layer, and then the second mold (17) is heated. Heat to perform vulcanization. After vulcanization is completed, the second mold (1
7) e Take it out upward, pull out the jig (23), and pull out the valve body 1) on which the lining layer (2) has been formed upward from the first mold (16). After that, the excess elastomer at normal size protrudes into the gap between the valve body 1) and the mold (16017), so this is removed to obtain a finished product.
（発明の作用及び効果）
この発明によれば、弁本体を鋼管の如き中空円筒状金属
管体で形成しであるので、大幅な重量軒滅が達成出来、
しかも管体は市販品を利用出来るため製造期間の短縮、
コストの低減を図ることが出来ると共に、鋳造加工にお
けるような種々の問題を解決することが出来る。(Operations and Effects of the Invention) According to the present invention, since the valve body is formed of a hollow cylindrical metal pipe such as a steel pipe, a significant weight reduction can be achieved.
Moreover, since the tube body can be made from commercially available products, the manufacturing period can be shortened.
It is possible to reduce costs and solve various problems such as those in casting processing.
又、弁本体の内周面及び端面を金型を用いた加硫手段に
より弁座を含むライニング層を焼付けて装着することが
出来るため、ライニング層の密着性が良く広範囲の流体
条件に対応することが可能となり、広範囲な用途に適合
可能なバタフライ弁を提供することが出来る。In addition, the lining layer, including the valve seat, can be attached by baking the inner peripheral surface and end surface of the valve body using a vulcanization method using a mold, so the lining layer has good adhesion and can handle a wide range of fluid conditions. This makes it possible to provide a butterfly valve that can be adapted to a wide range of uses.
ライニング層は、弁本体の外径寸法を基準としてセット
される金型により成型される為、弁座内径寸法が安定し
全閉時におけるシール性の向上をもたらすシートリング
となるライニング層の施工が出来、高品質、高性能の製
品を得ることが出来る。The lining layer is molded using a mold that is set based on the outer diameter of the valve body, so the lining layer becomes a seat ring that stabilizes the inner diameter of the valve seat and improves sealing performance when fully closed. You can obtain high-quality, high-performance products.
弁本体が、配管管路のパイプ外径と同一外径寸法である
ため、バンド、ジヨイント等の簡便な接続手段の利用が
出来るため、配管の作業性が向上し配管コストの節減を
図ることが出来る。Since the valve body has the same outer diameter as the pipe outer diameter of the piping line, it is possible to use simple connection means such as bands and joints, which improves piping workability and reduces piping costs. I can do it.
又、弁座を含むライニング層は、弁本体の内周面３部分
的に被覆する構造である為、高価なエラストマー材τ４
の使用を必要とする場合に、特に経済性の向上を図るこ
とが出来る。Furthermore, since the lining layer including the valve seat partially covers the inner circumferential surface of the valve body, expensive elastomer material τ4 is used.
This can particularly improve economical efficiency when it is necessary to use
第１図は縦断面図、第２図は金型と弁本体とのセット状
態分示す縦断面図である。
（１） 弁 本 体 （２）・・・ライニング層（３
）・弁 座 （４）・・・弁 体（５）・弁
棒 （６）・・弁 棒（７〉・・弁棒ガイド
（８）、弁棒ガイド（９）・・軸 孔 （１０）
・・管状グランド部材（１１）管状グランド部材
（１２）・・・蓋 体 （１３）・・シ
ール材（１４）・弁棒ガイド （１５）・・・シール
手段（１６）・・・第１金型 （１７）・・・第２
金型（１８）・・・弁座成型部 （１９）・・・円
筒 体２０）溝 部 （２１）・・・フランジ部
２２）・・・治具挿通孔 （２３）・・・治 具
２４）・・円 筒 体 （２５）・・溝 部２６
）・−・フランジ部 （２７）・・・ライニング層成
型部２８）・・パーティングライン
第 ｊ 図
第 ２ 図
Ｌ′２０
手続−を山王２Ｉ（自発）FIG. 1 is a longitudinal sectional view, and FIG. 2 is a longitudinal sectional view showing the set state of the mold and the valve body. (1) Valve body (2) Lining layer (3
)・Valve seat (4)...Valve body (5)・Valve
Rod (6)...Valve Rod (7>...Valve stem guide)
(8), Valve stem guide (9)...Shaft hole (10)
... Tubular gland member (11) ... Tubular gland member (12) ... Lid body (13) ... Seal material (14) - Valve stem guide (15) ... Sealing means (16) ... First metal Type (17)...Second
Mold (18)...Valve seat molding part (19)...Yen
Cylindrical body 20) Groove portion (21)...Flange portion 22)...Jig insertion hole (23)...Jig 24)...Cylindrical body (25)...Groove portion 26
)...Flange part (27)...Lining layer molding part 28)...Parting line No.
Claims (2)
の内周面の一部を被覆するエラストマー材料からなるラ
イニング層と、弁本体内に回動自在に軸支された円板状
の弁体とからなり、弁本体の同一直径方向対向位置に軸
孔を形成し、該軸孔に連続して弁棒ガイドを弁本体に固
着し、前記弁体を軸支する弁棒を弁棒ガイドに軸装し、
一方の弁棒を弁棒ガイドから外方へ延出して駆動手段に
連結自在にすると共に、前記ライニング層に弁体の外周
面が接離する弁座を形成したことを特徴とするバタフラ
イ弁。(1) A valve body made of a hollow cylindrical metal tube, a lining layer made of an elastomer material that covers a part of the inner peripheral surface of the valve body, and a disc rotatably supported within the valve body. A shaft hole is formed at the same diametrically opposite position of the valve body, a valve stem guide is fixed to the valve body continuously to the shaft hole, and a valve stem that pivotally supports the valve body is formed. Mounted on the valve stem guide,
A butterfly valve characterized in that one valve stem extends outward from a valve stem guide to be freely connected to a driving means, and a valve seat is formed on the lining layer so that the outer peripheral surface of the valve body comes into contact with and separates from the lining layer.
れた軸孔に連続して外方へ延び出す管状の弁棒ガイドを
固着して弁本体を形成し、該弁本体の外径寸法に合致す
るフランジ部を有する２分割の金型を弁本体の両端開口
から挿着してセットし、金型と弁本体の内周面の一部と
の間に形成される空間に未加硫のライニング材料を充填
し、加熱加硫して弁座を含むライニング層を形成するよ
うにしたことを特徴とするバタフライ弁の製造方法。(2) A valve body is formed by fixing a tubular valve stem guide that continuously extends outward to a shaft hole formed at a position opposite to each other in the diametrical direction of a hollow cylindrical metal tube, and the outer diameter of the valve body is A two-part mold with a flange portion that matches the dimensions is inserted and set through the openings at both ends of the valve body, and the space formed between the mold and a part of the inner circumferential surface of the valve body is filled. A method for manufacturing a butterfly valve, characterized in that a lining material of sulfur is filled and heated and vulcanized to form a lining layer including a valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63272686A JP2678638B2 (en) | 1988-10-28 | 1988-10-28 | Manufacturing method of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63272686A JP2678638B2 (en) | 1988-10-28 | 1988-10-28 | Manufacturing method of butterfly valve |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34842795A Division JPH08240272A (en) | 1995-12-18 | 1995-12-18 | Butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02120580A true JPH02120580A (en) | 1990-05-08 |
| JP2678638B2 JP2678638B2 (en) | 1997-11-17 |
Family
ID=17517383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63272686A Expired - Lifetime JP2678638B2 (en) | 1988-10-28 | 1988-10-28 | Manufacturing method of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2678638B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0427267U (en) * | 1990-06-28 | 1992-03-04 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49125923U (en) * | 1973-02-21 | 1974-10-29 | ||
| JPS6064824U (en) * | 1983-10-12 | 1985-05-08 | 科研工業株式会社 | butterfly valve |
| JPS62246662A (en) * | 1986-04-18 | 1987-10-27 | Takasago Thermal Eng Co Ltd | Butterfly type valve |
-
1988
- 1988-10-28 JP JP63272686A patent/JP2678638B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49125923U (en) * | 1973-02-21 | 1974-10-29 | ||
| JPS6064824U (en) * | 1983-10-12 | 1985-05-08 | 科研工業株式会社 | butterfly valve |
| JPS62246662A (en) * | 1986-04-18 | 1987-10-27 | Takasago Thermal Eng Co Ltd | Butterfly type valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0427267U (en) * | 1990-06-28 | 1992-03-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2678638B2 (en) | 1997-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4133513A (en) | Butterfly valve assembly | |
| EP0097419B1 (en) | Valve formed of plastics material and improved actuator therefor | |
| US5050894A (en) | Sealing device designed to achieve sealing between two parts having a possibility of relative rotation to a limited extent | |
| US4988077A (en) | Reinforced plastic valve | |
| JPH02120580A (en) | Butterfly valve and its manufacture | |
| US3567180A (en) | Fabricated valve and method of making the same | |
| US3779512A (en) | Stamped-disc butterfly valve | |
| JPH08240272A (en) | Butterfly valve | |
| JPH0297777A (en) | Butterfly valve and manufacture thereof | |
| JP3689091B2 (en) | Butterfly valve | |
| US3204927A (en) | Butterfly valve with particular structure for making an integral seat | |
| JPH02261984A (en) | Butterfly valve | |
| CN219221296U (en) | High airtight regulation blast gate | |
| JP2553845Y2 (en) | Eccentric valve shaft sealing device | |
| KR20070109577A (en) | Butterfly valve | |
| JPH0297778A (en) | Butterfly valve and manufacture thereof | |
| CN2297605Y (en) | Three-way valve | |
| JPH0972431A (en) | Condensation preventive butterfly valve | |
| JPH10153266A (en) | Butterfly valve | |
| CN2219991Y (en) | Monolithic iron and plastics binding anticorrosive diaphragm valve | |
| CN223740154U (en) | Ball valve | |
| CN218818331U (en) | Valve body of motor control proportional valve | |
| CN212868486U (en) | An electrically controlled lug butterfly valve | |
| JPH09119529A (en) | Seat ring for butterfly valve | |
| JPH09273637A (en) | Butterfly valve |