JPH0245561Y2 - - Google Patents
Info
- Publication number
- JPH0245561Y2 JPH0245561Y2 JP15787083U JP15787083U JPH0245561Y2 JP H0245561 Y2 JPH0245561 Y2 JP H0245561Y2 JP 15787083 U JP15787083 U JP 15787083U JP 15787083 U JP15787083 U JP 15787083U JP H0245561 Y2 JPH0245561 Y2 JP H0245561Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- synthetic rubber
- flow path
- valve body
- rubber layer
- 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
- 229920003051 synthetic elastomer Polymers 0.000 claims description 19
- 239000005061 synthetic rubber Substances 0.000 claims description 19
- 230000013011 mating Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
本考案は、バタフライバルブの改良に係るもの
で、更に詳しくは、鋳造成形された弁箱本体の流
体流路の内面及びフランジと接する両端面に合せ
型具を用いて合成ゴムを流入充填して合成ゴム層
を一体成形し、更に弁箱には前記流路と直交した
弁棒を、軸受けの貫通孔に挿通させると共に、弁
棒には流路で円形状の弁体を装着してなるバタフ
ライバルブを提供するものである。[Detailed description of the invention] The invention relates to the improvement of a butterfly valve, and more specifically, the invention relates to the improvement of a butterfly valve. A synthetic rubber layer is integrally molded by inflowing and filling synthetic rubber, and a valve stem perpendicular to the flow path is inserted into the through hole of the bearing in the valve box, and a circular valve is inserted into the valve stem in the flow path. The present invention provides a butterfly valve that is worn on the body.
従来用いられているバタフライバルブには弁体
の弁座部にゴム等のゴム層を嵌めて被覆し、弁体
との接触を良くして漏洩を防ぐ構成のものや、流
路内面の全部に予め成形したシートを嵌めて被覆
したものがあるが、芯出しが煩しく、更にシート
を包覆するため仕上げ加工を行わねばならない。
また包覆したシートは弁体の開閉でずれの生ずる
ことがある。 Conventionally used butterfly valves have a structure in which the valve seat part of the valve body is covered with a rubber layer such as rubber to improve contact with the valve body and prevent leakage, and some have a structure that covers the entire inner surface of the flow path. There is a method in which a pre-formed sheet is fitted and covered, but centering is cumbersome and further finishing work must be performed to cover the sheet.
Furthermore, the covered seat may shift when the valve body is opened and closed.
本考案は斯様な点に鑑み、この問題に対処した
もので、即ち、製作の簡易化及び腐食性流体の浸
食を防ぎ耐久性をはかることを目的としたもので
ある。 In view of the above, the present invention is intended to address this problem, that is, to simplify manufacturing, prevent corrosion by corrosive fluids, and improve durability.
以下本考案に係るバタフライバルブの一実施例
を添付図面に基いて具体的に説明する。 An embodiment of the butterfly valve according to the present invention will be described in detail below with reference to the accompanying drawings.
１は箱体で、開口した流路２と、この流路２の
中央上下に対向して貫通した軸受３，４を設け、
軸受３，４の貫通孔３′，４′には流路２の中心軸
線を通る弁棒９を挿込んで回転できるようにして
ある。また弁箱１の開口側両端面には段部５，
５′と、この段部５，５′内に夫々環状溝６，６′
を設け、更に流路２の中央には内周面に溝１７を
設けて形成してある。 Reference numeral 1 designates a box body, which has an open flow path 2 and bearings 3 and 4 that face each other and pass through the center of the flow path 2 above and below.
A valve rod 9 passing through the central axis of the flow path 2 is inserted into the through holes 3', 4' of the bearings 3, 4 so as to be rotatable. In addition, a stepped portion 5 is provided on both end surfaces of the valve box 1 on the opening side.
5', and annular grooves 6, 6' are formed in the stepped portions 5, 5', respectively.
Further, a groove 17 is formed on the inner peripheral surface at the center of the flow path 2.
また流路２の内面及び端面段部５，５′には、
合せ型により合成ゴムを流入充填した合成ゴム層
７を一体に被着して設けてある。 In addition, on the inner surface and end surface steps 5 and 5' of the flow path 2,
A synthetic rubber layer 7 filled with synthetic rubber is integrally applied using a mating mold.
合成ゴム層７は中央に後記弁体８を取付ける水
平部７′と、この水平部７′を境にした前後は開口
方向に傾斜面７″，７″に形成してある。 The synthetic rubber layer 7 has a horizontal portion 7' in the center on which a valve body 8, which will be described later, is attached, and slopes 7'', 7'' at the front and rear sides of the horizontal portion 7' in the opening direction.
前記弁体８は合成ゴム層７の水平部７′に嵌つ
て前記貫通孔３′，４′に挿込んだ弁棒９に装着し
てある。 The valve body 8 is fitted onto a horizontal portion 7' of the synthetic rubber layer 7 and attached to a valve rod 9 inserted into the through holes 3', 4'.
弁体８は円板状となつて、回転により弁座面が
合成ゴム層７と面接又は解離するようになる。 The valve body 8 has a disk shape, and the valve seat surface comes into contact with or separates from the synthetic rubber layer 7 by rotation.
また合成ゴム層を被着するには、鋳造されたま
まの弁箱１に、第３図に示す一組の合せ金型治具
１０，１１を用いて一方の治具１０を弁箱１の端
面に当てると共に治具１０から張出した合成ゴム
層７の内径を決める心金１０′を流路２内に挿込
み、更に治具１０の上下に設けた同方向の屈折片
１０″，１０″に穿つた貫通孔１３，１３′と弁箱
１の軸受３，４の貫通孔３′，４′内にシヤフト１
２を挿込み、治具１０の上部屈折片１０″にシヤ
フト１２を固定し、更に弁箱１の他端から前記心
金１０′の突出した案内部１４に他方の金型治具
１１に穿つた案内孔１１′を嵌めて治具１１を弁
箱１の他端面に圧接させるように各治具１１間を
ボルト１５で締付け、更に治具１１側には注入孔
１６を穿ち、この注入孔１６を、弁箱１の内面
と、治具１０及び治具１１からの心金１０′，１
１″外面の間の空間部に連通させ、前記注入孔１
６から空間部に向けて合成ゴムを圧入するもの
で、合成ゴムは弁箱１に設けた空間に圧入され溝
及び段部に充填され、更に弁箱の鋳造したままの
粗面に流入されるため密着性がよい。更に心金を
用いた金型治具内に注入するために寸法は正確で
仕上げを行なう必要がない。従つて本考案は前記
構成で明らかなように弁箱１の流路２の内面に被
着した合成ゴム層７は金型と弁箱１の間の空間内
に圧入して成形したため内径寸法は正確で仕上げ
を行なう必要がなく、しかもシヤフトによつて予
め芯出しが行なわれているため、改めて芯出しを
する必要がなく面倒がない。また弁箱１は端面の
一部だけを仕上げ加工するだけで製作は簡単で量
産に適し、更に鋳造のままの粗面に合成ゴムは流
入するため極めて密着性を有し、更に弁体８を開
閉時に回転しても合成ゴムは溝と段部を設けて密
着させるためずれるおそれがない。 Furthermore, in order to apply the synthetic rubber layer, one jig 10 is attached to the valve body 1 as-cast using a pair of mating mold jigs 10 and 11 shown in FIG. A mandrel 10' that touches the end face and determines the inner diameter of the synthetic rubber layer 7 extending from the jig 10 is inserted into the channel 2, and further, bending pieces 10'', 10'' in the same direction are provided above and below the jig 10. The shaft 1 is inserted into the through holes 13, 13' bored in the valve body 1 and the through holes 3', 4' of the bearings 3, 4 of the valve body 1.
2, fix the shaft 12 to the upper bending piece 10'' of the jig 10, and then drill into the other mold jig 11 from the other end of the valve box 1 the protruding guide portion 14 of the mandrel 10'. The guide holes 11' are fitted, and the bolts 15 are tightened between the jigs 11 so that the jigs 11 are brought into pressure contact with the other end surface of the valve box 1. Furthermore, an injection hole 16 is bored on the side of the jigs 11, and the injection hole 16 is the inner surface of the valve body 1 and the mandrels 10', 1 from the jig 10 and the jig 11.
The injection hole 1 is connected to the space between the outer surfaces of the injection hole 1
Synthetic rubber is press-fitted into the space from 6, and the synthetic rubber is press-fitted into the space provided in the valve box 1, filling the grooves and steps, and then flowing into the as-cast rough surface of the valve box. Good adhesion. Furthermore, since the material is injected into a mold jig using a mandrel, the dimensions are accurate and there is no need for finishing. Therefore, in the present invention, as is clear from the above structure, the synthetic rubber layer 7 adhered to the inner surface of the flow path 2 of the valve body 1 is press-fitted into the space between the mold and the valve body 1, so that the inner diameter dimension is It is accurate and does not require finishing, and since centering is already done by the shaft, there is no need to center again and there is no trouble. In addition, the valve body 1 is easy to manufacture by finishing only a part of the end face, and is suitable for mass production.Furthermore, the synthetic rubber flows into the rough surface of the casting, so it has excellent adhesion. Even when it rotates when opening and closing, the synthetic rubber has grooves and steps to keep it in close contact, so there is no risk of it shifting.
更に内面は合成ゴム層で被着しているため腐食
性液体を流しても浸食することなく耐久性がある
等の効果がある。 Furthermore, since the inner surface is coated with a synthetic rubber layer, it does not erode even when corrosive liquids are poured on it, making it durable.
図面は本考案に係るバタフライバルブの一実施
例を示すもので、第１図は縦断側面図、第２図は
正面図、第３図は金型治具の斜視図、第４図は合
成ゴム圧入時の縦断側面図である。
１……弁箱、２……流路、３，４……軸受、
３′，４′……貫通孔、５，５′……段部、６，
６′……環状溝、７……合成ゴム層、７′……水平
面、７″……傾斜面、８……弁体、９……弁棒、
１０，１１……合せ金型治具、１０′……心金、
１０″……屈折型、１１′……案内孔、１１″……
位置決め心金、１２……シヤフト、１３，１３′
……貫通孔、１４……案内部、１５……ボルト、
１６……注入孔、１７……溝。
The drawings show an embodiment of the butterfly valve according to the present invention, in which Fig. 1 is a vertical side view, Fig. 2 is a front view, Fig. 3 is a perspective view of a mold jig, and Fig. 4 is a synthetic rubber valve. FIG. 3 is a longitudinal side view during press-fitting. 1...Valve box, 2...Flow path, 3, 4...Bearing,
3', 4'...Through hole, 5,5'...Step part, 6,
6'...Annular groove, 7...Synthetic rubber layer, 7'...Horizontal surface, 7''...Slanted surface, 8...Valve body, 9...Valve stem,
10, 11... Matching mold jig, 10'... Mandrel,
10"...Refraction type, 11'...Guide hole, 11"...
Positioning mandrel, 12...Shaft, 13, 13'
...Through hole, 14...Guiding part, 15...Bolt,
16...Injection hole, 17...Groove.
Claims (1)
受け貫通孔を設けると共に、流路の内面中央部の
周面には溝を、両端面には段部を設け、しかもこ
の段部内には夫々環状の凹溝を設け、更にこの段
部と流路内面には、金型治具の合せ型によつて合
成ゴムを流入充填して合成ゴム層を一体に被着成
形し、更に、前記軸受貫通孔に挿通した弁棒には
流路内で弁体を装着する事を特徴としたバタフラ
イバルブ。 The valve body is provided with a through hole for bearing the valve stem perpendicular to the center line in the flow path, a groove is provided on the circumferential surface of the central part of the inner surface of the flow path, and steps are provided on both end surfaces. An annular groove is provided in each part, and synthetic rubber is injected and filled into the stepped part and the inner surface of the channel using a mating mold of a mold jig, and a synthetic rubber layer is integrally adhered and molded. Furthermore, the butterfly valve is characterized in that a valve body is attached to the valve stem inserted into the bearing through hole within the flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15787083U JPS6064824U (en) | 1983-10-12 | 1983-10-12 | butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15787083U JPS6064824U (en) | 1983-10-12 | 1983-10-12 | butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6064824U JPS6064824U (en) | 1985-05-08 |
| JPH0245561Y2 true JPH0245561Y2 (en) | 1990-12-03 |
Family
ID=30347940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15787083U Granted JPS6064824U (en) | 1983-10-12 | 1983-10-12 | butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6064824U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2678638B2 (en) * | 1988-10-28 | 1997-11-17 | 株式会社巴技術研究所 | Manufacturing method of butterfly valve |
| JP2507168Y2 (en) * | 1989-10-24 | 1996-08-14 | 株式会社 巴技術研究所 | Central butterfly valve disc |
| JP6462285B2 (en) * | 2014-09-16 | 2019-01-30 | 旭有機材株式会社 | Method and apparatus for assembling a butterfly valve |
-
1983
- 1983-10-12 JP JP15787083U patent/JPS6064824U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6064824U (en) | 1985-05-08 |
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