JPH081267B2 - Butterfly valve - Google Patents
Butterfly valveInfo
- Publication number
- JPH081267B2 JPH081267B2 JP1081253A JP8125389A JPH081267B2 JP H081267 B2 JPH081267 B2 JP H081267B2 JP 1081253 A JP1081253 A JP 1081253A JP 8125389 A JP8125389 A JP 8125389A JP H081267 B2 JPH081267 B2 JP H081267B2
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- valve
- shaft hole
- peripheral surface
- valve shaft
- 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 - Fee Related
Links
Landscapes
- Valve Housings (AREA)
- Lift Valve (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、各種流体の制御を行うバタフライ弁に関
し、特に弁本体の肉抜きを可能として軽量化を図り得る
ようにしたバタフライ弁に関する。Description: TECHNICAL FIELD The present invention relates to a butterfly valve that controls various fluids, and more particularly to a butterfly valve that enables thinning of a valve body to achieve weight reduction.
（従来の技術） 従来、内部に円筒状の流体通路を貫通した弁本体内に
円板状の弁体を回転自在に軸支し、弁本体の内周面と弁
体外周面との間に介挿された弾性密封材であるシートリ
ングの内周面に弁体の外周面を接離させて流路の開閉、
制御を行うようにしたバタフライ弁は公知であり、種々
の流体の制御に多用されている。(Prior Art) Conventionally, a disc-shaped valve body is rotatably supported in a valve body that penetrates a cylindrical fluid passage, and is disposed between an inner peripheral surface of the valve body and an outer peripheral surface of the valve body. Opening and closing of the flow path by contacting and separating the outer peripheral surface of the valve body with the inner peripheral surface of the seat ring which is the inserted elastic sealing material,
A butterfly valve adapted to perform control is known and is widely used for controlling various fluids.
バタフライ弁の弁本体は、一般に鋳造、鍛造等の製法
による一体成型品として提供されている。The valve body of a butterfly valve is generally provided as an integrally molded product by a manufacturing method such as casting or forging.
しかしながら、かかる製法による一体成型品は、弁本
体内部の肉抜きが難しく、軽量化が困難であった。又、
弁本体の内周面加工や弁軸貫通孔の加工等を行う必要が
ありコスト高となるのを避けることが出来なかった。However, it has been difficult to lighten the inside of the valve body and to reduce the weight of the integrally molded product by such a manufacturing method. or,
Since it was necessary to process the inner peripheral surface of the valve body and the valve shaft through hole, it was unavoidable that the cost increased.
（発明が解決しようとする課題） この発明は、従来困難とされている弁本体内部の肉抜
きを可能として弁本体の軽量化を図り得るようにすると
共に、弁本体内周面加工や弁軸貫通孔等の後加工を不要
とせんとするものである。(Problems to be Solved by the Invention) The present invention makes it possible to reduce the weight of the valve body by allowing the inside of the valve body to be lightened, which has been conventionally difficult, and to process the inner peripheral surface of the valve body and the valve shaft. Post-processing such as through holes is unnecessary.
（課題を解決するための手段） 上記課題を解決するために、この発明が採った手段
は、内部に円筒状の流体通路を貫通した弁本体と、該弁
本体内に回転自在に軸支される円板状の弁体と、弁本体
と弁体との間に介挿された弾性密封材製のシートリング
とからなり、弁本体の直径方向対向位置に弁軸孔が形成
され、該弁軸孔に整合して弁本体の外周面から直径方向
外方へ延び出す弁軸筒が形成され、弁軸孔は弁軸筒内を
貫通しており、該弁軸孔に弁体を軸支する弁棒が挿通軸
支されているバタフライ弁において前記弁軸孔の中心を
通り流体通路と直交するフランジ面と平行な分割平面に
沿って弁本体を２つの弁本体部材に２分割し、各弁本体
部材を弁軸を対称軸とする対称な形状に形成すると共
に、各弁本体部材に分割平面に向って開放される盲貫の
穴を複数形成し、分割平面を接合面として２つの弁本体
部材を一体的に接合して内部に前記盲貫の穴を密封した
ことを特徴とする。(Means for Solving the Problem) In order to solve the above-mentioned problems, a means adopted by the present invention is a valve main body having a cylindrical fluid passage penetrated therein, and a valve body rotatably supported in the valve main body. A disc-shaped valve body, and a seat ring made of an elastic sealant interposed between the valve body and the valve body, and a valve shaft hole is formed at a diametrically opposed position of the valve body. A valve shaft cylinder that is aligned with the shaft hole and extends diametrically outward from the outer peripheral surface of the valve body is formed, and the valve shaft hole penetrates through the valve shaft cylinder, and the valve body is axially supported in the valve shaft hole. In the butterfly valve in which the valve rod is inserted and axially supported, the valve body is divided into two valve body members along a division plane parallel to the flange surface passing through the center of the valve shaft hole and orthogonal to the fluid passage. The valve body member is formed in a symmetrical shape with the valve axis as the axis of symmetry, and is opened in each valve body member toward the dividing plane. It is characterized in that a plurality of blind holes are formed, and two valve body members are integrally joined with the dividing plane as a joint surface to seal the blind holes inside.
（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。この発明が適用されるバタフライ弁
は、内部に円筒状の流体通路を軸方向に貫通した弁本体
と、該弁本体内に回動自在に軸支される円板状の弁体
と、弁本体と弁体との間に介挿されるゴム等の弾性密封
材製のシートリングとから構成されており、配管フラン
ジの間に挟み込んで配管系統内に配設され、弁体を外部
から駆動回転してその外周面を前記シートリングの内周
面に接離させることにより、弁本体内の流体通路を開閉
制御している。(Embodiment) A preferred embodiment of the present invention will be described in detail below with reference to the drawings. A butterfly valve to which the present invention is applied includes a valve body that axially penetrates a cylindrical fluid passage, a disc-shaped valve body that is rotatably supported in the valve body, and a valve body. And a seat ring made of an elastic sealing material such as rubber that is inserted between the valve body and the valve body.The seat ring is placed in the piping system by being sandwiched between the piping flanges, and the valve body is driven and rotated from the outside. The outer peripheral surface of the lever is brought into contact with and separated from the inner peripheral surface of the seat ring to control the opening and closing of the fluid passage in the valve body.
第１図は、かかるバタフライ弁の弁本体（１）とシー
トリング（２）とを示しており、弁体は省略されてい
る。図面を参照して、この発明は弁本体（１）をその内
部を通る流体通路と直交する面、すなわち配管フランジ
と対向するフランジ面（23）と平行な平面に沿って中央
部から２分割したことを特徴とする。FIG. 1 shows a valve body (1) and a seat ring (2) of such a butterfly valve, and the valve body is omitted. With reference to the drawings, the present invention divides a valve body (1) into two parts from a central part along a plane orthogonal to a fluid passage passing through the inside, that is, a plane parallel to a flange surface (23) facing a piping flange. It is characterized by
２分割された弁本体部材（1a）（1b）は、互に対称な
形状を有しており、接合されるとき１つの弁本体（１）
が作出される。第２図は２つの弁本体部材（1a）（1b）
の接合によって作出された弁本体（１）を示しており、
直径方向対向位置に弁軸孔（３）（４）が形成されると
共に、内周面中央部には内周方向に延びる環状の溝
（５）が形成される。弁本体（１）の外周面には、一方
の弁軸孔（３）に整合して、直径方向に延び出す弁軸筒
（６）が一体に形成されており、該弁軸筒（６）内を一
方の弁軸孔（３）が貫通している。この一方の弁軸孔
（３）は、弁体に固着される駆動側の弁棒を挿通軸支す
る弁軸孔として作用し、駆動側弁棒は弁軸孔（３）の外
端から更に外方へ延び出して所望の駆動手段が適用可能
である。弁軸筒（６）の外端には、弁棒駆動手段を取付
けるための取付フランジ（７）が一体に形成される。弁
軸筒（６）並びに取付フランジ（７）はその中央部にお
いて、前記弁本体（１）を２分割する分割平面に沿って
同様に２分割されており、更に、弁軸孔（３）（４）並
びに内周面の環状溝（５）も２分割される。The valve body members (1a) (1b) divided into two have symmetrical shapes with each other, and when joined, one valve body (1)
Is created. Fig. 2 shows two valve body members (1a) (1b)
Shows the valve body (1) created by the joining of
Valve shaft holes (3) and (4) are formed at diametrically opposed positions, and an annular groove (5) extending in the inner peripheral direction is formed at the center of the inner peripheral surface. On the outer peripheral surface of the valve body (1), a valve shaft cylinder (6) which is aligned with one valve shaft hole (3) and extends in the diametrical direction is integrally formed. The valve shaft cylinder (6) One valve shaft hole (3) penetrates the inside. The one valve shaft hole (3) acts as a valve shaft hole for inserting and axially supporting the drive side valve rod fixed to the valve body, and the drive side valve rod further extends from the outer end of the valve shaft hole (3). A desired driving means can be applied by extending outward. A mounting flange (7) for mounting the valve rod driving means is integrally formed on the outer end of the valve stem (6). The valve shaft cylinder (6) and the mounting flange (7) are similarly bisected in the central portion along a split plane that divides the valve body (1) in two, and further, the valve shaft hole (3) ( 4) and the annular groove (5) on the inner peripheral surface are also divided into two.
弁本体部材（1a）（1b）の外周面には、弁軸を中心と
した対称形状に、一方の弁本体部材（1a）又は（1b）か
ら他方の弁本体部材（1b）又は（1a）に向かって庇状に
延び出す庇状突起（９）が外周面を半周して形成されて
おり、弁本体部材（1a）（1b）が接合されるとき、庇状
突起（８）（９）が他方の弁本体部材（1a）又は（1b）
の外周面を覆って接合線を隠蔽し、外部よりの雨水の侵
入を防止すると同時に接合時の芯出しを容易にしてい
る。弁本体部材（1a）（1b）はその分割面を合わされた
後、超音波溶着、振動溶着若しくは接着剤等の適宜の手
段により接合され一体化される。第３〜12図に接合前の
弁本体部材（1a）（1b）が示されており、弁本体部材
（1a）（1b）には、分割面（10）に向って開放された複
数の盲貫の穴（11）が形成され、該穴（11）により弁本
体部材（1a）（1b）の肉抜きが行われ軽量化が達成され
る。穴（11）は弁本体部材（1a）（1b）の円周面に沿っ
て配列されており、弁本体部材（1a）（1b）は穴（11）
によってあたかも外周リング（12）と内周リング（13）
とをリブ（14）で接続した構造を呈するため、弁本体
（１）の強度が向上する。On the outer peripheral surface of the valve body member (1a) (1b), one valve body member (1a) or (1b) to the other valve body member (1b) or (1a) is symmetrically formed around the valve axis. An eave-shaped projection (9) extending in an eaves-like shape is formed half around the outer peripheral surface, and when the valve body members (1a) (1b) are joined, the eave-shaped projections (8) (9) Is the other valve body member (1a) or (1b)
By covering the outer peripheral surface of the joint and hiding the joint line, rainwater is prevented from entering from the outside and at the same time, the centering at the joint is facilitated. The valve body members (1a) and (1b) are joined together by their appropriate dividing surfaces and then joined together by an appropriate means such as ultrasonic welding, vibration welding or an adhesive. FIGS. 3 to 12 show the valve body members (1a) (1b) before joining, and the valve body members (1a) (1b) have a plurality of blinds opened toward the dividing surface (10). A through hole (11) is formed, and the valve body members (1a) and (1b) are thinned by the hole (11) to achieve weight reduction. The holes (11) are arranged along the circumferential surface of the valve body members (1a) (1b), and the valve body members (1a) (1b) are the holes (11).
As if by outer ring (12) and inner ring (13)
Since it has a structure in which and are connected by the rib (14), the strength of the valve body (1) is improved.
このように弁本体部材（1a）（1b）は穴（11）の形成
により軽量化が達成されると同時に強度の向上を図るこ
とが出来ると共に、弁本体部材（1a）（1b）に中空部が
形成される結果、断熱効果を有した構造となり、結露現
象を防止することが出来る。（15）はシートリング
（２）の外周鍔部（16）を嵌合するための嵌合溝であ
る。As described above, the valve body members (1a) and (1b) can be made lighter by forming the holes (11) and at the same time can be improved in strength, and the valve body members (1a) and (1b) can be hollow. As a result, the structure has a heat insulating effect, and the dew condensation phenomenon can be prevented. Reference numeral (15) is a fitting groove for fitting the outer peripheral flange portion (16) of the seat ring (2).
シートリング（２）は、第３図に示すようにゴム等の
軟弾性の密封材で形成したリング状部材であって、中央
部直径方向対向位置に前記弁本体（１）の弁軸孔（３）
（４）に整合する弁軸孔（３′）（４′）が貫穿される
と共に内周面中央部は若干盛り上がった帯状のシール部
（17）が形成される。又、外周面中央部には前記弁本体
（１）の内周面中央の環状溝（５）に係入する帯状の突
条（18）が形成されている。As shown in FIG. 3, the seat ring (2) is a ring-shaped member formed of a soft elastic sealing material such as rubber, and has a valve shaft hole ( 3)
The valve shaft holes (3 ') and (4') aligned with (4) are perforated, and a slightly raised belt-shaped seal portion (17) is formed at the center of the inner peripheral surface. Further, a strip-shaped ridge (18) is formed in the central portion of the outer peripheral surface so as to engage with the annular groove (5) in the center of the inner peripheral surface of the valve body (1).
尚、シートリング（２）の形状、並びに弁本体（１）
との組み合わせ構造は単に一例を示したにすぎないもの
であり、これに限られるものではない。任意のシートリ
ング形状と弁本体との組み合わせ構造を採用し得ること
は当業者に容易に理解されるであろう。The shape of the seat ring (2) and the valve body (1)
The combination structure with and is merely an example, and the present invention is not limited to this. It will be readily appreciated by those skilled in the art that any seat ring shape and valve body combination construction may be employed.
弁軸筒（６）の基部、すなわち弁軸筒（６）と弁本体
（１）との接合部には、弁軸筒（６）を両側から挟持し
て断面＜状の補強板（19）が形成され、該補強板（19）
は、各弁本体部材（1a）（1b）にそれぞれ１個ずつ対称
的に形成される。又、弁本体（１）の外周下部には、弁
軸孔（４）の両側に位置して、前記補強板（19）と同様
の脚板（20）が、各弁本体部材（1a）（1b）にそれぞれ
１個ずつ対称的に形成される。At the base of the valve stem (6), that is, at the joint between the valve stem (6) and the valve body (1), the reinforcing plate (19) having a cross section with the valve stem (6) sandwiched from both sides. The reinforcing plate (19) formed with
Is symmetrically formed on each of the valve body members (1a) and (1b). In addition, a leg plate (20) similar to the reinforcing plate (19) is provided at the lower outer periphery of the valve body (1) on both sides of the valve shaft hole (4), and each of the valve body members (1a) (1b). ), Each one is formed symmetrically.
分割された弁軸筒部（6a）は、第８図に示すように他
方の弁軸筒部（6b）と接合されるが、各弁軸筒部（6a）
（6b）には対称的に、他方に対して延び出す庇状突部
（21a）（21b）を有し、接合部を被覆すると共に位置合
せを容易にしている。又、分割された弁軸孔（３）が接
合により円形の弁軸孔（３）を作出する。The split valve shaft tubular portion (6a) is joined to the other valve shaft tubular portion (6b) as shown in FIG. 8, but each valve shaft tubular portion (6a) is joined.
The eaves-like protrusions (21a) and (21b) symmetrically extending to the other (6b) cover the joint portion and facilitate the alignment. Also, the divided valve shaft hole (3) is joined to create a circular valve shaft hole (3).
弁軸筒（６）の基部に形成された補強板（19）の部分
は、第９図に示すように一方の弁軸筒部（6a）の外方に
一方の補強板（19a）が一体に形成され、他方の弁軸筒
部（6b）の外方に他方の補強板（19b）が一体に形成さ
れ、対称形状をなしている。そして、これと同様に下部
の脚板（20）も対称形状をなして形成されている。補強
板（19）並びに脚板（20）は、配管フランジの倒れ込み
を防止する機能をも有しているものであり、このため、
第15図に示すように補強板（1a）、脚板（20）の長さ
は、弁本体（１）の幅と同一若しくはこれより若干小さ
な寸法に形成されている。As shown in FIG. 9, the reinforcing plate (19) formed on the base of the valve stem (6) has one reinforcing plate (19a) integrated with the outside of one valve stem (6a). The other reinforcing plate (19b) is integrally formed outside the other valve shaft tubular portion (6b), and has a symmetrical shape. Further, similarly to this, the lower leg plate (20) is also formed in a symmetrical shape. The reinforcing plate (19) and the leg plate (20) also have a function of preventing the pipe flange from collapsing. Therefore,
As shown in FIG. 15, the length of the reinforcing plate (1a) and the length of the leg plate (20) are the same as or slightly smaller than the width of the valve body (1).
第10〜12図は、第４図のＣ−Ｃ′線、Ｄ−Ｄ′線並び
にＥ−Ｅ′線に沿った断面図をそれぞれ示しており、２
つの弁本体部材（1a）（1b）が接合されるとき、一方の
弁本体部材（1a）又は（1b）から延び出した庇状突起
（８）又は（９）が他方の弁本体部材（1b）又は（1a）
の外周面を被覆すると共に、円形の弁軸孔（４）が作出
される。尚、庇状突起（８）（９）を受け入れるため
に、それぞれの弁本体部材（1a）（1b）の対応部分は断
面状に凹設され状段部（22）に形成される。更に、
分割された穴（11）が接合された弁本体（１）の内部に
中空部を作出する。10 to 12 are sectional views taken along the lines CC ', DD' and EE 'of FIG. 4, respectively.
When the two valve body members (1a) and (1b) are joined together, the eave-shaped projections (8) or (9) extending from the one valve body member (1a) or (1b) are connected to the other valve body member (1b). ) Or (1a)
A circular valve shaft hole (4) is created while covering the outer peripheral surface of the. Incidentally, in order to receive the eaves-shaped projections (8) and (9), corresponding portions of the respective valve body members (1a) and (1b) are formed in the stepped portion (22) by being recessed in a sectional shape. Furthermore,
A hollow portion is created inside the valve body (1) to which the divided holes (11) are joined.
第13図は、２つの弁本体部材（1a）（1b）を接合し、
シートリング（２）を装着した状態の断面図であり、接
合によって作出される弁本体（１）の内周面の環状溝
（５）内にシートリング（２）の外周面中央の突条（1
8）が嵌入すると共に、外周鍔部（16）が弁本体（１）
のフランジ面（23）に形成された嵌合溝（15）内に嵌入
して保持され、弁体の回動力によりシートリング（２）
がズレ動くのが防止されている。第14図は分割された２
つの弁本体部材（1a）（1b）を接合する状態を示し、接
合によって形成された弁本体（１）の内周面にシートリ
ング（２）が装着される（第15図）。FIG. 13 shows that two valve body members (1a) and (1b) are joined,
FIG. 3 is a cross-sectional view of the seat ring (2) in a mounted state, in which an annular groove (5) on the inner peripheral surface of the valve body (1) created by joining is provided with a ridge (in the center of the outer peripheral surface of the seat ring (2) ( 1
8) is fitted and the outer collar (16) is attached to the valve body (1).
The seat ring (2) is retained by being fitted into a fitting groove (15) formed in the flange surface (23) of the valve body.
Is prevented from moving. Figure 14 is divided into 2
The state which joins two valve body members (1a) (1b) is shown, and the seat ring (2) is attached to the inner peripheral surface of the valve body (1) formed by joining (FIG. 15).
又、シートリング（２）の接着後、内部に弁体が配置
され、弁軸孔（３）（４）に挿通された弁棒と連結され
る。一方の弁軸孔（３）が軸挿された弁棒は弁軸孔
（３）の外方へ延び出し、所望の駆動手段と連結される
ために用意される。又、他方の弁軸孔（４）に軸装され
た弁棒は弁軸孔（４）内で終端し、弁軸孔（４）の外端
はプラグで密栓される。Further, after the seat ring (2) is bonded, the valve body is arranged inside and is connected to the valve rod inserted through the valve shaft holes (3) and (4). The valve rod having one valve shaft hole (3) inserted therein is extended to the outside of the valve shaft hole (3) and is prepared for connection with a desired driving means. The valve rod axially mounted in the other valve shaft hole (4) terminates in the valve shaft hole (4), and the outer end of the valve shaft hole (4) is tightly plugged with a plug.
（作用） フランジ面と平行な分割面に沿って弁本体を２分割し
て２つの弁本体部材に構成し、該２つの弁本体部材を接
合することによって１つの弁本体を形成するようにして
あるので、各弁本体部材の接合面に向って開放される穴
を形成することにより、弁本体の内部に中空部を作り、
肉抜きを簡単に行うことが出来るため、弁の軽量化およ
び流体保温効果の向上を容易に達成することが出来る。
分割された２つの弁本体部材は弁軸を対称軸とする対称
な形状に形成されている為、１つの金型で成形が出来、
コストの低下と大量生産とを図ることが出来ると共に、
左右がない為、接合が容易となる。(Operation) The valve body is divided into two along the dividing surface parallel to the flange surface to form two valve body members, and one valve body is formed by joining the two valve body members. Therefore, by forming a hole that is opened toward the joint surface of each valve body member, a hollow portion is created inside the valve body,
Since the meat can be easily removed, the weight of the valve can be reduced and the effect of keeping the fluid warm can be easily achieved.
Since the two divided valve body members are formed in a symmetrical shape with the valve axis as the axis of symmetry, they can be molded with one mold,
In addition to cost reduction and mass production,
Since there are no left and right sides, joining is easy.
各弁本体部材は互いに他方に対して延び出す庇状突起
を有し、該突起により接合部を被覆するようにしてある
ので、接合部からの雨水の侵入を防止出来、且接合部の
芯出しを容易に行うことが出来る。Each valve body member has an eave-shaped projection extending toward the other, and since the projection covers the joint, rainwater can be prevented from entering from the joint and the joint is centered. Can be done easily.
（発明の効果） この発明のバタフライ弁によれば、弁本体をフランジ
面と平面な分割面に沿って２つの弁本体部材に分割し、
分割された各本体部材に多数の穴を形成して肉抜きを行
うようにしてあるので、弁の軽量化を容易に達成出来る
と共に、前記穴によって弁本体部材は、あたかもリブで
構成された構造を呈するため、強度が向上し、弁本体の
内外面から負荷される荷重に対し充分な強度を有する。(Effect of the Invention) According to the butterfly valve of the present invention, the valve body is divided into two valve body members along the flange surface and the plane dividing surface,
Since a large number of holes are formed in each of the divided main body members to lighten the weight, it is possible to easily achieve weight reduction of the valve, and the valve main body member is constructed by the holes as if it were a rib. Therefore, the strength is improved, and the strength is sufficient for the load applied from the inner and outer surfaces of the valve body.
更に、分割された各弁本体部材は弁軸を対称軸として
対称な形状に形成されているため、製造が簡便になると
共に、コストの低下を図ることが出来る。Furthermore, since each of the divided valve body members is formed in a symmetrical shape with the valve axis as the axis of symmetry, the manufacturing is simplified and the cost can be reduced.
又、弁本体の内周面に形成されるシートリング保持用
の環状溝の形成や、弁軸孔の形成を金型成形時に同時
に、精度良く行うことが出来、従来のような後加工が不
要となる。Also, the annular groove for holding the seat ring formed on the inner peripheral surface of the valve body and the valve shaft hole can be formed simultaneously with high precision at the time of molding the die, and post processing unlike the conventional case is unnecessary. Becomes
一方の弁本体部材から他方の弁本体部材に向って延び
出す庇状突起を形成することにより、接合部を庇状突起
で被覆して雨水等の侵入を防止出来ると共に、接合時の
芯出しを簡便に行うことが出来る。By forming an eave-shaped protrusion that extends from one valve body member toward the other valve body member, the joint can be covered with the eave-shaped protrusion to prevent rainwater and the like from entering, and at the time of centering at the time of joining. It can be done easily.
【図面の簡単な説明】 第１図はシートリングを装着した状態の外観斜視図、第
２図は接合された弁本体の外観斜視図、第３図は弁本体
とシートリングとを分解した状態の斜視図、第４図は一
方の弁本体部材の正面図、第５図は同平面図、第６、７
図は同側面図、第８図はＡ−Ａ′線断面図、第９図はＢ
−Ｂ′線断面図、第10図はＣ−Ｃ′線断面図、第11図は
Ｄ−Ｄ′線断面図、第12図はＥ−Ｅ′線断面図、第13図
は接合されたシートリングを装着した状態の横断面図、
第14図は接合状態を示す断面図、第15図は接合されたシ
ートリングを装着した状態の縦断面図である。 （１）…弁本体、（２）…シートリング （３）…弁軸孔、（４）…弁軸孔 （５）…環状溝、（６）…弁軸筒 （７）…取付フランジ、（８）…庇状突起 （９）…庇状突起、（10）…分割面 （11）…穴、（12）…外周リング （13）…内周リング、（14）…リブ （15）…嵌合溝、（16）…外周鍔部 （17）…シール部、（18）…突条 （19）…補強板、（20）…脚板 （21）…庇状突部、（22）…Ｌ状段部 （23）…フランジ面BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a seat ring mounted state, FIG. 2 is an external perspective view of a joined valve body, and FIG. 3 is an exploded state of the valve body and seat ring. Is a perspective view, FIG. 4 is a front view of one valve body member, FIG. 5 is a plan view of the same, and FIGS.
The figure is the same side view, FIG. 8 is a sectional view taken along the line AA ′, and FIG. 9 is B.
-B 'line sectional view, FIG. 10 is CC line sectional view, FIG. 11 is DD line sectional view, FIG. 12 is EE' line sectional view, and FIG. 13 is joined. Transverse sectional view with seat ring attached,
FIG. 14 is a sectional view showing a joined state, and FIG. 15 is a vertical sectional view showing a state where the joined seat rings are mounted. (1) ... valve body, (2) ... seat ring (3) ... valve shaft hole, (4) ... valve shaft hole (5) ... annular groove, (6) ... valve shaft cylinder (7) ... mounting flange, ( 8) ... eaves-like protrusion (9) ... eaves-like protrusion, (10) ... dividing surface (11) ... hole, (12) ... outer ring (13) ... inner ring, (14) ... rib (15) ... fit Groove, (16) ... Outer peripheral flange (17) ... Seal, (18) ... Ridge (19) ... Reinforcement plate, (20) ... Leg plate (21) ... Eave-shaped projection, (22) ... L-shaped Step (23): Flange surface
Claims (3)
と、該弁本体内に回転自在に軸支される円板状の弁体
と、弁本体と弁体との間に介挿された弾性密封材製のシ
ートリングとからなり、弁本体の直径方向対向位置に弁
軸孔が形成され、該弁軸孔に整合して弁本体の外周面か
ら直径方向外方へ延び出す弁軸筒が形成され、弁軸孔は
弁軸筒内を貫通しており、該弁軸孔に弁体を軸支する弁
棒が挿通軸支されているバタフライ弁において前記弁軸
孔の中心を通り流体通路と直交するフランジ面と平行な
分割平面に沿って弁本体を２つの弁本体部材に２分割
し、各弁本体部材を弁軸を対称軸とする対称な形状に形
成すると共に、各弁本体部材に分割平面に向って開放さ
れる盲貫の穴を複数形成し、分割平面を接合面として２
つの弁本体部材を一体的に接合して内部に前記盲貫の穴
を密封したことを特徴とするバタフライ弁。1. A valve body having a cylindrical fluid passage extending therethrough, a disc-shaped valve body rotatably supported in the valve body, and a valve body interposed between the valve body and the valve body. And a seat ring made of an elastic sealing material, a valve shaft hole is formed at a diametrically opposed position of the valve body, and the valve shaft hole is aligned with the valve shaft hole and extends diametrically outward from the outer peripheral surface of the valve body. In a butterfly valve in which a shaft cylinder is formed, a valve shaft hole penetrates through the valve shaft cylinder, and a valve rod that axially supports the valve element is inserted and supported in the valve shaft hole, the center of the valve shaft hole is formed. The valve body is divided into two valve body members along a dividing plane parallel to the flange surface orthogonal to the passage fluid passage, and each valve body member is formed into a symmetrical shape with the valve axis as a symmetry axis. A plurality of blind holes that are opened toward the split plane are formed in the valve body member, and the split plane is used as the joint surface.
A butterfly valve in which two valve body members are integrally joined to seal the blind hole therein.
び出す庇状の突部を形成し、該庇状突部により接合部を
被覆するようにしたことを特徴とする請求項（１）記載
のバタフライ弁。2. An eaves-shaped protrusion extending toward the other is formed on the outer peripheral surface of each valve body member, and the joint is covered by the eaves-shaped protrusion. The butterfly valve described in (1).
溝を形成し、該環状溝にシートリング外周面の環状の突
条を嵌入するようにしたことを特徴とする請求項（１）
記載のバタフライ弁。3. An annular groove extending annularly at the center of the inner peripheral surface of the valve body, and an annular projection on the outer peripheral surface of the seat ring is fitted into the annular groove. 1)
The described butterfly valve.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1081253A JPH081267B2 (en) | 1989-03-31 | 1989-03-31 | Butterfly valve |
| US07/497,846 US5029811A (en) | 1989-03-31 | 1990-03-23 | Butterfly valve |
| AU52228/90A AU621522B2 (en) | 1989-03-31 | 1990-03-26 | Butterfly valve |
| DE69012866T DE69012866T2 (en) | 1989-03-31 | 1990-03-26 | Throttle. |
| EP90303181A EP0390458B1 (en) | 1989-03-31 | 1990-03-26 | Butterfly valve |
| CA002013164A CA2013164C (en) | 1989-03-31 | 1990-03-27 | Butterfly valve |
| KR1019900004395A KR0168665B1 (en) | 1989-03-31 | 1990-03-31 | Butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1081253A JPH081267B2 (en) | 1989-03-31 | 1989-03-31 | Butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02261984A JPH02261984A (en) | 1990-10-24 |
| JPH081267B2 true JPH081267B2 (en) | 1996-01-10 |
Family
ID=13741226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1081253A Expired - Fee Related JPH081267B2 (en) | 1989-03-31 | 1989-03-31 | Butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH081267B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220012781A (en) * | 2020-07-22 | 2022-02-04 | 가부시키가이샤 오케이엠 | Valve structure and valve |
| JP7190765B1 (en) * | 2021-08-18 | 2022-12-16 | 新倉工業株式会社 | butterfly valve |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3788647B2 (en) * | 1996-11-20 | 2006-06-21 | 株式会社キッツ | Butterfly valve |
| ITTO980018A1 (en) * | 1998-01-12 | 1999-07-12 | Rizzio Valvole S P A | INTERCEPTION AND ADJUSTMENT VALVE FOR FLUIDS WITH BUTTERFLY SHUTTER. |
| JP4186204B2 (en) * | 1999-08-27 | 2008-11-26 | 日本ダイヤバルブ株式会社 | Container butterfly valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1430765A (en) * | 1972-04-04 | 1976-04-07 | Cav Ltd | Control systems for fuel systems for engines |
| JPS5550313U (en) * | 1978-09-29 | 1980-04-02 | ||
| JPS56151549A (en) * | 1980-04-28 | 1981-11-24 | Teruo Honami | Hollow structure |
| JPS585729U (en) * | 1980-12-09 | 1983-01-14 | 出光興産株式会社 | lightweight architectural panels |
| JPH0718770Y2 (en) * | 1987-10-05 | 1995-05-01 | ワシアルミ株式会社 | Beam flange for loom |
-
1989
- 1989-03-31 JP JP1081253A patent/JPH081267B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220012781A (en) * | 2020-07-22 | 2022-02-04 | 가부시키가이샤 오케이엠 | Valve structure and valve |
| JP7190765B1 (en) * | 2021-08-18 | 2022-12-16 | 新倉工業株式会社 | butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02261984A (en) | 1990-10-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |