JPH0336755Y2 - - Google Patents
Info
- Publication number
- JPH0336755Y2 JPH0336755Y2 JP1982184380U JP18438082U JPH0336755Y2 JP H0336755 Y2 JPH0336755 Y2 JP H0336755Y2 JP 1982184380 U JP1982184380 U JP 1982184380U JP 18438082 U JP18438082 U JP 18438082U JP H0336755 Y2 JPH0336755 Y2 JP H0336755Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hole
- stem member
- valve stem
- seat ring
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
Landscapes
- Lift Valve (AREA)
Description
【考案の詳細な説明】
(1) 考案の目的
(産業上の利用分野)
この考案は、とくに低圧流体の部位に利用する
に適した、小口径の中心型バタフライ弁に関する
ものである。[Detailed description of the invention] (1) Purpose of the invention (industrial application field) This invention relates to a small-diameter central butterfly valve that is particularly suitable for use in low-pressure fluid areas.
(従来技術と解決すべき課題)
バタフライ弁は、全開時にも、弁板の厚みのほ
かに、その直径方向にのびる、弁軸を支持するた
めに必要な膨隆部分が流体通路内に存在して圧力
損失をもたらすので、このような欠点を回避する
ことを可能とするものが、たとえば、特公昭53−
6373号、特公昭44−9423号、特公昭46−14302号
各公報などにみるように従来から提案されてい
る。(Prior art and issues to be solved) In addition to the thickness of the valve plate, a butterfly valve has a bulge extending in the diameter direction that is necessary to support the valve stem in the fluid passage even when it is fully open. Since it causes pressure loss, there is a method that can avoid this drawback, for example,
It has been proposed in the past, as seen in Japanese Patent Publication No. 6373, Japanese Patent Publication No. 44-9423, and Japanese Patent Publication No. 14302-1974.
これらのものはいずれも、弁軸を分割構成とし
て弁板を可及的に平行状に薄くし、ないしは弁板
の主たる平面部分から突出する個所の形状をなめ
らかにするなどの手段によつて抵抗を少なくする
ような意図が窺われるが、上記の当初のものは、
弁板を囲繞保持する弁本体を2個の部分に分割構
成してあるために、構成が複雑で心出しその他調
整が厄介でコスト的にきわめて不利であり、小口
径で安価という観点からみれば到底実用には耐え
ない。また、上記第2番目のものは、その明細書
の記載から判るように、流体通路内の整流を主た
る目的とするもので、組立てにあたつては、弁板
の直径方向対向位置に、弁外から各独立の弁軸部
材を装着するようになつており、心出し、弁軸方
向のシールが困難で、これもまたコスト的な不利
を免かれず実用的ではない。 All of these methods can be resisted by making the valve plate as parallel and thin as possible by splitting the valve stem, or by smoothing the shape of the part of the valve plate that protrudes from the main plane part. Although it seems that the intention was to reduce the number of
Since the valve body that surrounds and holds the valve plate is divided into two parts, the structure is complicated and centering and other adjustments are troublesome, which is extremely disadvantageous in terms of cost. It's completely impractical. In addition, as can be seen from the description of the second type, the main purpose is to rectify the flow within the fluid passage, and during assembly, the valve plate is placed at a position opposite to the valve plate in the diametrical direction. Each independent valve shaft member is attached from the outside, making it difficult to center and seal in the direction of the valve shaft, which is also impractical due to cost disadvantages.
さらに、上記第3番目のもの、ないしこれに代
表されるものは、所謂偏心型といわれるバタフラ
イ弁であつて、この種のものは、弁板自体はほぼ
平板状に形成されていても、弁軸が弁板の外側に
あるのが普通であるので、これによる流体抵抗を
回避することはできない。 Furthermore, the third or most representative type of butterfly valve is a so-called eccentric type butterfly valve, and although the valve plate itself is formed into a substantially flat plate shape, the valve plate itself is shaped like a flat plate. Since the shaft is usually outside the valve plate, the fluid resistance caused by this cannot be avoided.
本考案は以上のような現状に鑑みてなされたも
のであつて、中心型のバタフライ弁において、弁
板の平面性を維持して流体通路内における流量を
可及的に大きくすることを可能としながら、心出
し、組立てが容易で安価であり、しかも常時安定
したシール作用を期待できるような、とくに小口
径低圧の流路に用いるに適した中心型バタフライ
弁を提供することを目的とするものである。 The present invention was developed in view of the current situation as described above, and it is possible to maintain the flatness of the valve plate and increase the flow rate in the fluid passage as much as possible in a central butterfly valve. However, it is an object of the present invention to provide a central butterfly valve that is easy to center and assemble, is inexpensive, and can be expected to always provide a stable sealing action, and is particularly suitable for use in a small-diameter, low-pressure flow path. It is.
(2) 考案の構成
(課題を解決する技術手段、その作用)
上記の目的を達成するため、本考案は、中心型
バタフライ弁において、内周面に一方の弁軸部材
を装着するための有底の孔を、また、これと直径
方向対向位置に、他方の弁軸部材を装着するため
の貫通孔をそなえた環状の弁本体と、前記弁本体
内周面に着脱自在に装着され、内周面から内方に
突出して頂面を円錐状に形成した内側突出部と外
周面から外方に突出した外側突出部とをそなえた
弁軸部材とを固着した弾性シートリングと、直径
方向対向位置に、夫々前記弁軸部材に係合する弁
軸係合孔を有する弁板とをそなえ、前記弾性シー
トリングに固定した弁軸部材の外側突出部を弁本
体の前記有底の孔に、該弁軸部材の外側端縁と前
記有底の孔の底部との間に小許の間隙を有するよ
うに嵌入し、内側突出部を弁板の一方の弁軸係合
孔に回動自在に係合するとともに、前記弁本体の
前記貫通孔とこれに整合する弁板の他方の弁軸係
合孔に弁外から弁軸部材を装着してなることを特
徴とするものである。(2) Structure of the invention (technical means for solving the problem and its effects) In order to achieve the above-mentioned purpose, the present invention is a central butterfly valve that has an advantageous method for attaching one valve shaft member to the inner circumferential surface. An annular valve body having a bottom hole and a through hole diametrically opposed to the bottom hole for attaching the other valve shaft member; An elastic seat ring fixed to a valve stem member having an inner protrusion that protrudes inward from the circumferential surface and has a conical top surface and an outer protrusion that protrudes outward from the outer circumferential surface; a valve plate having a valve shaft engaging hole that engages with the valve shaft member, respectively, the outer protrusion of the valve shaft member fixed to the elastic seat ring is inserted into the bottomed hole of the valve body; The valve shaft member is fitted with a small gap between the outer edge of the valve shaft member and the bottom of the bottomed hole, and the inner protrusion is rotatably inserted into one of the valve shaft engagement holes of the valve plate. The present invention is characterized in that a valve shaft member is attached from outside the valve to the other valve shaft engaging hole of the valve plate that engages with the through hole of the valve body and is aligned with the through hole of the valve body.
このように構成することによつて、とくに小口
径低圧流路を使用するのに好適な、流量の増大を
はかるとともに、確実なシール作用を奏し得ら
れ、さらに適時適所で随意に分解組立自在で、コ
ストの面からも有利な、低圧流体の処理を行なう
小口径弁に適した中心型バタフライ弁を得ること
が可能となる。 By configuring it in this way, it is possible to increase the flow rate, which is particularly suitable for using a small-diameter low-pressure flow path, and also to achieve a reliable sealing effect, and furthermore, it can be disassembled and assembled at will at the right time and place. Therefore, it becomes possible to obtain a central butterfly valve suitable for a small-diameter valve that processes low-pressure fluid, which is also advantageous in terms of cost.
(実施例の説明)
第1図は、環状弁本体1と、その内周面に装着
された弾性シートリング3ならびに、これに配装
されるれるべきほぼ円板状の弁板2を示す要部断
面図であつて、端面からみた弁板2が、一方の弁
軸部材5に装着されようとしているところを表わ
しているものである。(Description of Embodiments) FIG. 1 shows an annular valve body 1, an elastic seat ring 3 attached to the inner circumferential surface thereof, and a substantially disc-shaped valve plate 2 to be disposed thereon. This is a partial sectional view showing the valve plate 2 about to be attached to one valve shaft member 5 as seen from the end face.
なお、図示はしていないが、前記弁本体1、シ
ートリング3の、弁軸部材5に対向する直径方向
対向位置には、弁板2を支持する他方の弁軸部材
を弁外から装着するための貫通孔が形成してある
ことは勿論である。 Although not shown, the other valve shaft member that supports the valve plate 2 is attached from outside the valve to the valve body 1 and the seat ring 3 at positions facing the valve shaft member 5 in the diametrical direction. Of course, a through hole is formed for this purpose.
第2図に示すように、前記弁軸部材5は板金製
で中空筒状に形成してあり、シートリング3に焼
付け、接着など適宜の手段で固着してあり、所定
位置に装着した状態で、シートリング3の内外両
側に突出しており、内側突出部5aはその頂部が
円錐状に形成してある。 As shown in FIG. 2, the valve stem member 5 is made of sheet metal and is formed into a hollow cylinder shape, and is fixed to the seat ring 3 by baking, gluing, or other suitable means, and when it is mounted in a predetermined position. , protrudes from both the inner and outer sides of the seat ring 3, and the inner protrusion 5a has a conical top.
弁本体1の内面には、前記弁軸部材5の外側突
出部5bが挿入される有底の孔1aが形成してあ
り、シートリングは全体として柔軟であるので、
前記突出部5bを孔1aに挿入した状態で、シー
トリング全体を弁本体内周面に、第1図に示すよ
うに装着することは容易である。 The inner surface of the valve body 1 is formed with a bottomed hole 1a into which the outer protrusion 5b of the valve stem member 5 is inserted, and the seat ring is flexible as a whole.
With the protruding portion 5b inserted into the hole 1a, it is easy to attach the entire seat ring to the inner peripheral surface of the valve body as shown in FIG. 1.
このように装着した場合、弁軸部材5の外側突
出部5bの端部と前記孔1aの底部との間に、第
1図に示すように、若干の間隙が存する様に孔1
aの深さと前記外側突出部5bの長さが設定して
あるものとする。 When installed in this way, the hole 1 is installed so that there is a slight gap between the end of the outer protrusion 5b of the valve shaft member 5 and the bottom of the hole 1a, as shown in FIG.
It is assumed that the depth of a and the length of the outer protrusion 5b are set.
つぎに、弁板2の平面部分を、弁本体1が含ま
れる面(紙面に垂直方向の面)に対して直角ない
しはこれに近い角度に位置させ、弁板2に形成し
た孔2aが前記弁軸部材5の円錐状の突出部5a
に対向するようにして、弁板2を回動するように
動かしてゆくと前記孔2aと前記突出部5aとが
嵌入係合し、これとともに弁板2は弁本体1内に
進入してゆき、ついで、弁板外周が、孔2aとは
直径方向反対位置近傍でシートリング3との間で
若干の抵抗はあるが、シートリングは手指で自由
に変形できる程度の弾性をそなえており、前述の
ように、弁軸部材5の外側端部と有底の孔の底部
の間には若干の間隙があつて、弁軸部材5の軸方
向の変位可能性を大きくしているので、抵抗に抗
して弁板は円滑にシートリング3内に進入して定
位に至ることが出来、そこで弁外から他方の弁軸
部材(不図示)を弁本体、シートリングに形成し
た孔を介して弁板2側の角孔に装着し組立てが完
成する。 Next, the plane portion of the valve plate 2 is positioned at a right angle to or at an angle close to the plane in which the valve body 1 is included (the plane perpendicular to the plane of the paper), and the holes 2a formed in the valve plate 2 are aligned with the valve body 1. Conical protrusion 5a of shaft member 5
When the valve plate 2 is rotated so as to face the valve plate 2, the hole 2a and the protrusion 5a fit into engagement, and the valve plate 2 moves into the valve body 1. Next, although there is some resistance between the outer periphery of the valve plate and the seat ring 3 in the vicinity of the position opposite to the hole 2a in the diametrical direction, the seat ring has enough elasticity to be deformed freely with fingers, and as described above. As shown in the figure, there is a slight gap between the outer end of the valve stem member 5 and the bottom of the bottomed hole, increasing the possibility of axial displacement of the valve stem member 5, so that the resistance is increased. Against this resistance, the valve plate can smoothly enter the seat ring 3 and reach the normal position, and then connect the other valve shaft member (not shown) from outside the valve to the valve body through the hole formed in the seat ring. Attach it to the square hole on the plate 2 side to complete the assembly.
このように構成したから、不図示の弁駆部材を
操作することによつて、該部材側の弁軸部材によ
つて弁板を回動して弁を開閉できる。このとき、
弁軸部材5はシートリングと一体的に固着してあ
るから回動することはなく、弁軸方向へのリーク
を確実に阻止することができる。 With this configuration, by operating the valve drive member (not shown), the valve shaft member on the side of the valve shaft member can rotate the valve plate to open and close the valve. At this time,
Since the valve shaft member 5 is integrally fixed to the seat ring, it does not rotate, and leakage in the direction of the valve shaft can be reliably prevented.
弁軸部材5はその両端が弁本体の孔1a、弁板
の孔2aにそれぞれ係合しているので、該部材自
体は板金製でも流体圧によつて変形するおそれは
なく、軽量かつきわめて安価にできる。 Both ends of the valve shaft member 5 are engaged with the hole 1a in the valve body and the hole 2a in the valve plate, so even though the member itself is made of sheet metal, there is no risk of deformation due to fluid pressure, and it is lightweight and extremely inexpensive. Can be done.
また、弁軸部材の突出部5bと孔1aとは精密
な係合は必ずしも容易ではないが、このことが、
柔軟なシートリングに保持されている弁軸部材に
多少の自動調心作用を付与することになり好都合
である。 Furthermore, although precise engagement between the protruding portion 5b of the valve shaft member and the hole 1a is not necessarily easy, this
This advantageously provides some self-aligning effect to the valve stem member held by the flexible seat ring.
なお、図示はしてないが、弁軸部材の内側の円
錐状突出部5aにナイロン、テフロン(商標名)
などをコーテイングすることによつて作動をより
円滑にすることができる。また該突出部5aを円
錐状に形成してあるので、シートリング3に弁軸
部材5を取着するさいに、両者の相対的な方向性
を考慮する必要がないので、組立てがきわめて容
易になる。 Although not shown, the conical protrusion 5a inside the valve shaft member is made of nylon or Teflon (trade name).
The operation can be made smoother by coating the device. Furthermore, since the protrusion 5a is formed into a conical shape, there is no need to consider the relative directionality of the two when attaching the valve shaft member 5 to the seat ring 3, making assembly extremely easy. Become.
(3) 考案の効果
以上説明したように、本考案によるときは、弁
本体に対するシートリングの装着、さらにこれに
対する弁板の装着がきわめて容易であり、また、
部品点数も少なく、弁軸の芯出し、調整に手間が
かからず、各部品を随時随所で任意に分解、組立
が簡単にできるうえ、軸封作用も確実であるの
で、とくに、比較的流体圧が低い小口径の流路に
使用するバタフライ弁において、弁開放時におけ
る、弁板の存在による圧力損失を可及的に低くす
ることができるとともに、コストの低減に資する
ところが大きく、従来複雑な構成の鋳物で構成し
ていたコツクなどに代替することができ、バタフ
ライ弁の使用可能分野の拡大にもきわめて有効で
ある。(3) Effects of the invention As explained above, according to the invention, it is extremely easy to attach the seat ring to the valve body, and furthermore, to attach the valve plate to the valve body.
The number of parts is small, centering and adjusting the valve stem requires no effort, each part can be easily disassembled and assembled at any time, and the shaft sealing action is reliable, so it is especially suitable for relatively fluid In butterfly valves used in small-diameter flow channels with low pressure, it is possible to reduce the pressure loss due to the presence of the valve plate when opening the valve as much as possible, and it also greatly contributes to cost reduction. It can be used as an alternative to the conventional casting valves, and is extremely effective in expanding the fields in which butterfly valves can be used.
第1図は本考案を適用したバタフライ弁の要部
断面図、第2図はシートリングと弁軸部材の関係
配置を示す端面側断面図である。
1……弁本体、2……弁板、3……シートリン
グ、5……弁軸部材。
FIG. 1 is a sectional view of a main part of a butterfly valve to which the present invention is applied, and FIG. 2 is an end side sectional view showing the relative arrangement of a seat ring and a valve shaft member. 1... Valve body, 2... Valve plate, 3... Seat ring, 5... Valve shaft member.
Claims (1)
の孔を、また、これと直径方向対向位置に、他方
の弁軸部材を装着するための貫通孔をそなえた環
状の弁本体と、 前記弁本体内周面に着脱自在に装着され、内周
面から内方に突出して頂面を円錐状に形成した内
側突出部と外周面から外方に突出した外側突出部
とをそなえた弁軸部材とを固着した弾性シートリ
ングと、 直径方向対向位置に、夫々前記弁軸部材に係合
する弁軸係合孔を有する弁板とをそなえ、 前記弾性シートリングに固定した弁軸部材の外
側突出部を弁本体の前記有底の孔に、該弁軸部材
の外側端縁と前記有底の孔の底部との間に小許の
間隙を有するように嵌入し、内側突出部を弁板の
一方の弁軸係合孔に回動自在に係合するととも
に、前記弁本体の前記貫通孔とこれに整合する弁
板の他方の弁軸係合孔に弁外から弁軸部材を装着
してなる中心型バタフライ弁。[Claims for Utility Model Registration] A bottomed hole on the inner peripheral surface for mounting one valve stem member, and a through hole diametrically opposed to this for mounting the other valve stem member. an annular valve body that is detachably attached to the inner peripheral surface of the valve body, an inner protrusion that protrudes inward from the inner circumferential surface and has a conical top surface, and an inner protrusion that protrudes outward from the outer circumferential surface. an elastic seat ring fixed to a valve stem member having an outer protruding portion; and a valve plate having valve stem engaging holes each engaging with the valve stem member at diametrically opposed positions; The outer protrusion of the valve stem member fixed to the seat ring is inserted into the bottomed hole of the valve body so that there is a small gap between the outer edge of the valve stem member and the bottom of the bottomed hole. and rotatably engages the inner protrusion with one valve shaft engaging hole of the valve plate, and the other valve shaft engaging hole of the valve plate that aligns with the through hole of the valve body. A central butterfly valve with a valve shaft member attached from outside the valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18438082U JPS5988560U (en) | 1982-12-07 | 1982-12-07 | Chiyo-shaped valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18438082U JPS5988560U (en) | 1982-12-07 | 1982-12-07 | Chiyo-shaped valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5988560U JPS5988560U (en) | 1984-06-15 |
JPH0336755Y2 true JPH0336755Y2 (en) | 1991-08-05 |
Family
ID=30398803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18438082U Granted JPS5988560U (en) | 1982-12-07 | 1982-12-07 | Chiyo-shaped valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5988560U (en) |
-
1982
- 1982-12-07 JP JP18438082U patent/JPS5988560U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5988560U (en) | 1984-06-15 |
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