JP2533608B2 - Valve disc guide structure - Google Patents
Valve disc guide structureInfo
- Publication number
- JP2533608B2 JP2533608B2 JP63078596A JP7859688A JP2533608B2 JP 2533608 B2 JP2533608 B2 JP 2533608B2 JP 63078596 A JP63078596 A JP 63078596A JP 7859688 A JP7859688 A JP 7859688A JP 2533608 B2 JP2533608 B2 JP 2533608B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- box
- chamber
- seal portion
- 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 - Lifetime
Links
Landscapes
- Sliding Valves (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は農水産設備、水処理設備、建築設備、プラン
ト設備、上水道等の管路に用いられて好適な弁の弁体案
内構造に関する。TECHNICAL FIELD The present invention relates to a valve body guide structure of a valve suitable for use in pipelines for agricultural and marine equipment, water treatment equipment, building equipment, plant equipment, water supply and the like.
［従来の技術］ 従来の弁として、例えば実公昭48−28335号公報、実
開昭57−134478号公報に記載の如く、流体流路と弁室を
形成する弁箱と、弁箱に対し回転はするが自軸方向には
移動しない状態で結合され、弁箱内に位置する部分に弁
体用おねじ部を備える弁棒と、弁棒の上記おねじ部に螺
着されるめねじ部とを備え、弁箱に対して弁棒軸方向に
移動はするが回転はしない状態で支持され、弁箱の流体
流路に連通する弁室内面に密着する弁室シール部、およ
び弁箱の流体流路内面に密着する弁座シール部を備える
弁体と、弁棒の弁箱外に位置する部分に固定され、弁棒
を介して弁体を駆動し、弁体の弁室シール部と弁座シー
ル部を対応する弁室内面と流体流路内面に対して接離す
る操作部材とを有してなるものがある。[Prior Art] As a conventional valve, for example, as described in Japanese Utility Model Publication No. 48-28335 and Japanese Utility Model Publication No. 57-134478, a valve box that forms a fluid flow path and a valve chamber, and a valve box that rotates with respect to the valve box. Valve rod having a male thread portion for the valve body in a portion located inside the valve box, and a female thread portion screwed to the male thread portion of the valve rod. And a valve chamber seal part that is supported in a state in which it moves in the valve stem axial direction but does not rotate with respect to the valve box, and that is in close contact with the valve chamber inner surface that communicates with the fluid flow path of the valve box, and A valve body having a valve seat seal portion that closely adheres to the inner surface of the fluid flow path, and a valve rod fixed to a portion of the valve rod located outside the valve box, driving the valve body through the valve rod, and a valve chamber seal portion of the valve body. Some have a valve seat seal portion having a corresponding valve chamber inner surface and an operating member for contacting with and separating from the inner surface of the fluid passage.
上記従来の弁にあっては、弁体の弁室シール部に対す
る上側面部に係合突部を設けるとともに、弁箱の弁室を
画成する内面に上記弁体の係合突部を弁棒軸方向にスラ
イド可能に支持する案内溝を設けている。これにより、
弁体は弁棒の回転時に上記案内溝に案内されて上下動
し、弁箱の流体流路を開閉する。In the above-mentioned conventional valve, the engaging protrusion is provided on the upper side surface portion of the valve body with respect to the valve chamber seal portion, and the engaging protrusion of the valve body is valved on the inner surface defining the valve chamber of the valve box. A guide groove that slidably supports in the axial direction of the rod is provided. This allows
When the valve rod rotates, the valve body moves up and down by being guided by the guide groove to open and close the fluid passage of the valve box.
［発明が解決しようとする課題］ しかしながら、上記従来の弁の弁体案内構造にあって
は、弁箱の弁室を画成する内面における、弁体の全開閉
ストロークに相当する上下の長い範囲に前述の案内溝を
設ける必要がある。したがって、弁箱の弁室を画成する
内面の広い範囲に凹凸面が形成され、弁体に付与する
回り止め力の反作用に基づく応力、および弁室内に浸
入する水圧に基づく応力が上記凹凸面に集中し、弁箱の
変形、破損を生じやすく耐久性が悪い。[Problems to be Solved by the Invention] However, in the above-mentioned valve body guide structure for a conventional valve, a long vertical range corresponding to the total opening / closing stroke of the valve body on the inner surface defining the valve chamber of the valve box. It is necessary to provide the guide groove described above. Therefore, a concave-convex surface is formed in a wide range of the inner surface that defines the valve chamber of the valve box, and stress due to the reaction of the anti-rotation force applied to the valve body and stress due to the hydraulic pressure entering the valve chamber cause the uneven surface. Concentrate on the valve box, and the valve box is easily deformed or damaged, resulting in poor durability.
本発明は、弁体を弁棒軸方向に沿って確実に案内する
状態下で、耐久性を向上することを目的とする。An object of the present invention is to improve the durability under the condition that the valve body is reliably guided along the axial direction of the valve stem.
［課題を解決するための手段］ 本発明は、流体流路と弁室を形成する弁箱と、弁箱に
対し回転はするが自軸方向には移動しない状態で結合さ
れ、弁箱内に位置する部分に弁体用おねじ部を備える弁
棒と、弁棒の上記おねじ部に螺着されるめねじ部を備
え、弁箱に対して弁棒軸方向に移動はするが回転はしな
い状態で支持され、弁箱の流体流路に連通する弁室内面
に密着する弁室シール部、および弁箱の流体流路内面に
密着する弁座シール部を備える弁体と、弁棒の弁箱外に
位置する部分に固定され、弁棒を介して弁体を駆動し、
弁体の弁室シール部と弁座シール部を対応する弁室内面
と流体流路内面に対して接離する操作部材とを有してな
る弁の弁体案内構造において、弁体の弁室シール部より
上方の上側面部に上係合部を設けるとともに、弁体の弁
室シール部より下方の下側面部に下係合部を設け、かつ
弁箱の弁室を画成する上部内面に上案内部を設けるとと
もに、弁箱の流体流路を画成する内面に下案内部を設
け、弁体の全開時には該弁体を上案内部のみにて支持
し、弁体の全閉時には該弁体を下案内部のみにて支持す
るようにしたものである。MEANS FOR SOLVING THE PROBLEM The present invention relates to a valve box that forms a fluid flow path and a valve chamber, and is connected to the valve box while rotating with respect to the valve box but not moving in the direction of its own axis. It has a valve rod with a male threaded portion for the valve body at the position where it is located, and a female threaded portion that is screwed to the male threaded portion of the valve rod. Of the valve body, which is supported in a non-contact state and has a valve chamber seal portion that is in close contact with the inner surface of the valve chamber that communicates with the fluid flow path of the valve box, and a valve seat seal portion that is in close contact with the inner surface of the fluid flow path of the valve box. It is fixed to the part located outside the valve box and drives the valve element through the valve stem,
A valve body guide structure for a valve, comprising a valve chamber seal portion and a valve seat seal portion of the valve body, and an operating member for contacting with and separating from the inner surface of the valve passage and the inner surface of the fluid passage. An upper engaging portion is provided on the upper side surface portion above the seal portion, and a lower engaging portion is provided on the lower side surface portion below the valve chamber seal portion of the valve body, and an upper inner surface that defines the valve chamber of the valve box. In addition to the upper guide part, the lower guide part is provided on the inner surface that defines the fluid flow path of the valve box.When the valve body is fully opened, the valve body is supported only by the upper guide part, and when the valve body is fully closed. The valve body is supported only by the lower guide portion.
［作用］ 本発明によれば、操作部材による弁棒の回転時に、弁
体は、弁全開側にあっては上案内部のみにて案内され
て上下動し、弁中間開度にあっては上案内部と下案内
部にて案内されて上下動し、弁全閉側にあっては下案
内部のみにて案内されて上下動し、結果として弁箱の流
体流路を開閉する。[Operation] According to the present invention, when the valve rod is rotated by the operating member, the valve element moves up and down by being guided only by the upper guide portion on the valve fully open side, and at the valve intermediate opening degree. The upper guide portion and the lower guide portion guide and move up and down, and on the fully closed side of the valve, only the lower guide portion guides and moves up and down. As a result, the fluid passage of the valve box is opened and closed.
ここで、本発明にあっては、弁体を弁棒軸方向に案内
する案内部を、弁室側の上案内部と、流体流路側の下案
内部とに分割したから、弁箱の弁室を画成する内面の広
い範囲に案内部形成のための凹凸面を形成する必要がな
い。このことは、弁体に付与する回り止め力の反作用
に基づく応力、および弁室内に浸入する水圧に基づく
応力が弁箱内面に集中しにくくなり、弁箱の変形、破損
を防止できることとなる。すなわち、弁体を弁棒軸方向
に沿って確実に案内する状態下で、耐久性を向上するこ
とができる。Here, in the present invention, the guide portion for guiding the valve body in the valve stem axial direction is divided into the upper guide portion on the valve chamber side and the lower guide portion on the fluid flow path side, so that the valve of the valve box is formed. It is not necessary to form a concavo-convex surface for forming the guide portion in a wide range of the inner surface that defines the chamber. This means that the stress due to the reaction of the anti-rotation force applied to the valve body and the stress due to the water pressure penetrating into the valve chamber are less likely to concentrate on the inner surface of the valve box, and the deformation and damage of the valve box can be prevented. That is, the durability can be improved under the condition that the valve body is reliably guided along the valve stem axial direction.
なお、本発明において、上案内部を案内部材に形成
し、この案内部材を弁箱本体のフランジ部に取着する場
合には、弁箱本体の内面に案内部形成のための凹凸面を
全く形成することなく、耐久性をより向上できる。In addition, in the present invention, when the upper guide portion is formed on the guide member and this guide member is attached to the flange portion of the valve box main body, there is no uneven surface for forming the guide portion on the inner surface of the valve box main body. The durability can be further improved without forming.
［実施例］ 第１図は本発明の一実施例を示す半断面図、第２図は
第１図のII−II線に沿う矢視図、第３図は案内部材を示
す半断面図、第４図は下案内部を模式的に示す断面図、
第５図は第４図のＶ−Ｖ線に沿う断面図である。[Embodiment] FIG. 1 is a half sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a half sectional view showing a guide member. FIG. 4 is a sectional view schematically showing the lower guide portion,
FIG. 5 is a sectional view taken along line VV of FIG.
弁10は、第１図に示す如く、弁箱11と、弁棒12と、弁
体13と、キャップ（操作部材）14とを有している。As shown in FIG. 1, the valve 10 has a valve box 11, a valve rod 12, a valve body 13, and a cap (operating member) 14.
弁箱11は、ハウジング15と、下ボンネット（案内部
材）16と、上ボンネット17と、弁棒受け板18の４者にて
構成され、ハウジング15、下ボンネット16および弁棒受
け板18を固定ボルト19Aにて結合し、上ボンネット17お
よび弁棒受け板18を固定ボルト19Bにて結合している。
ハウジング15は流体流路15Aを形成するとともに、弁室1
5Bを形成し、流体流路15Aの両端部に管接合フランジ部1
5Cを備え、弁室15Bの上端部に組立フランジ部15Dを備え
ている。The valve box 11 is composed of a housing 15, a lower bonnet (guide member) 16, an upper bonnet 17, and a valve rod receiving plate 18, and fixes the housing 15, the lower bonnet 16 and the valve rod receiving plate 18. The bolts 19A are used for connection, and the upper bonnet 17 and the valve stem support plate 18 are connected with use of fixing bolts 19B.
The housing 15 forms a fluid flow path 15A, and the valve chamber 1
5B is formed, and pipe joint flanges 1 are formed on both ends of the fluid flow path 15A.
5C, and an assembly flange portion 15D at the upper end of the valve chamber 15B.
弁棒12は、中間フランジ部12Aを下ボンネット16と弁
棒受け板18の間に保持され、弁箱11に対し回転はするが
自軸方向には移動しない状態で結合されている。弁棒12
は、弁箱11の内部（ハウジング15の弁室15B）に位置す
る下端部に弁体用おねじ部12Bを備えている。The valve stem 12 is held with the intermediate flange portion 12A held between the lower bonnet 16 and the valve stem receiving plate 18, and is connected to the valve box 11 while rotating but not moving in its own axis direction. Valve rod 12
Is provided with a valve body thread 12B at the lower end located inside the valve box 11 (the valve chamber 15B of the housing 15).
弁体13は、弁棒12の上記おねじ部12Bに螺着されるめ
ねじナット（めねじ部）21を一体に備える。弁体13は、
後に詳述する案内構造により、弁箱11に対して弁棒軸方
向に移動はするが回転はしない状態で支持される。The valve element 13 integrally includes a female screw nut (female screw part) 21 which is screwed to the male screw part 12B of the valve rod 12. The valve body 13 is
The guide structure, which will be described in detail later, supports the valve box 11 while moving it in the valve stem axial direction but not rotating it.
また、弁体13は、第１図においてＴ字状をなす弁室シ
ール部22と弁座シール23を備えている。弁室シール部22
は弾性シール材からなり、弁体13が上下動するに際して
弁室15Bのリング状内面に対して接離し、弁締切り時に
弁室15Bの内面に密着する。弁座シール部23も弾性シー
ル材からなり、弁体13が上下動するに際して流体流路15
AのＵ字状内面に対して接離し、弁締切り時に流体流路1
5Aの内面に密着する。Further, the valve body 13 includes a valve chamber seal portion 22 and a valve seat seal 23 which are T-shaped in FIG. Valve chamber seal 22
Is made of an elastic sealing material, and comes in contact with and separates from the ring-shaped inner surface of the valve chamber 15B when the valve body 13 moves up and down, and comes into close contact with the inner surface of the valve chamber 15B when the valve is closed. The valve seat seal portion 23 is also made of an elastic seal material, and when the valve body 13 moves up and down, the fluid passage 15
Fluid flow path 1 when the valve is shut off by contacting and separating from the U-shaped inner surface of A
It adheres to the inner surface of 5A.
キャップ14は、弁棒12の外部に位置する上端部に固定
されてボックススパナが着脱でき、弁棒12を介して弁体
13を上下動し、弁体13の弁室シール部22と弁座シール部
23を対応する弁室15Bの内面と流体流路15Aの内面に対し
て接離する。The cap 14 is fixed to the upper end located outside the valve rod 12 so that the box spanner can be attached and detached, and the valve disc 12
13 is moved up and down, and the valve chamber seal part 22 and the valve seat seal part of the valve body 13 are moved.
23 is brought into contact with or separated from the inner surface of the corresponding valve chamber 15B and the inner surface of the fluid flow path 15A.
しかして、弁対13の弁室シール部22に対する上側面部
の円周方向４位置には弁棒軸方向に沿う上係合部24が設
けられ、弁体13の弁室シール部22に対する下側面部の円
周方法４位置には弁棒軸方向に沿う下係合部25が設けら
れる。他方、弁箱11の弁室15Bの上部を画成する内面に
は、前述の下ボンネット（案内部材）16の下面の円周方
向４位置に設けられる上案内部26が着脱できる状態にて
装着され、上記弁体13の上係合部24を弁棒軸方向にスラ
イド可能に支持する（第２図、第３図参照）。また、弁
箱11の流体流路15Aを画成する内面の円周方向４位置に
は、上記弁体13の下係合部25を弁棒軸方向にスライド可
能に支持する下案内部27が設けられる（第４図、第５図
参照）。Thus, an upper engaging portion 24 along the axial direction of the valve rod is provided at four positions in the circumferential direction of the upper side surface portion of the valve pair 13 with respect to the valve chamber seal portion 22, and the valve body 13 is provided with a lower engaging portion for the valve chamber seal portion 22. A lower engaging portion 25 is provided along the axial direction of the valve rod at the circumferential method 4 position on the side surface portion. On the other hand, on the inner surface that defines the upper portion of the valve chamber 15B of the valve box 11, the upper guide portion 26 provided at four positions in the circumferential direction of the lower surface of the lower bonnet (guide member) 16 is detachably mounted. The upper engaging portion 24 of the valve body 13 is supported slidably in the axial direction of the valve rod (see FIGS. 2 and 3). A lower guide portion 27 that supports the lower engagement portion 25 of the valve body 13 slidably in the valve rod axial direction is provided at four positions in the circumferential direction on the inner surface that defines the fluid flow path 15A of the valve box 11. It is provided (see FIGS. 4 and 5).
ここで、下ボンネット（案内部材）16が備える上案
内部26の内径Ｋは弁室シール部22の外径（止水径）Ｄよ
り小さく設定され、弁体13が備える上係合部24の外径
Ｈは弁室シール部22の外径（止水径）Ｄに近似もしくは
それ以下の値に設定される。Here, the inner diameter K of the upper guide portion 26 included in the lower bonnet (guide member) 16 is set to be smaller than the outer diameter (water stop diameter) D of the valve chamber seal portion 22, and the upper engaging portion 24 of the valve body 13 is provided. The outer diameter H is set to a value close to or less than the outer diameter (water stop diameter) D of the valve chamber seal portion 22.
しかして、弁10にあっては、弁体13の全開時には該弁
体13を上案内部26のみにて支持し、弁体13の全閉時には
該弁体13を下案内部27のみにて支持する。Then, in the valve 10, when the valve body 13 is fully opened, the valve body 13 is supported only by the upper guide portion 26, and when the valve body 13 is fully closed, the valve body 13 is supported only by the lower guide portion 27. To support.
次に、上記実施例の作用について説明する。 Next, the operation of the above embodiment will be described.
上記実施例によれば、キャップ14による弁棒12の回転
時に、弁体13は、弁全開側にあっては上案内部26のみ
にて案内されて上下動し、弁中間開度にあっては上案
内部26と下案内部27にて案内されて上下動し、弁全閉
側にあっては下案内部27のみにて案内されて上下動し、
結果として弁箱11の流体流路15Aを開閉する。According to the above-described embodiment, when the valve rod 12 is rotated by the cap 14, the valve body 13 moves up and down while being guided only by the upper guide portion 26 on the valve fully open side, and at the valve intermediate opening degree. Is moved vertically by being guided by the upper guide portion 26 and the lower guide portion 27, and is vertically moved by being guided only by the lower guide portion 27 on the valve fully closed side.
As a result, the fluid flow path 15A of the valve box 11 is opened and closed.
ここで、上記実施例にあっては、弁体13を弁棒軸方向
に案内する案内部を、弁室側の上案内部26と、流体流路
側の下案内部27とに分割したから、弁箱11の弁室15Bを
画成する内面の広い範囲に案内部形成のために凹凸面を
形成する必要がない。このことは、弁体13に付与する
回り止めの反作用に基づく応力、および弁室15Bの浸
入する水圧に基づく応力が弁箱11の内面に集中しにくく
なり、弁箱11の変形、破損を防止できることとなる。す
なわち、弁体13を弁棒軸方向に沿って確実に案内する状
態下で、耐久性を向上することができる。Here, in the above embodiment, since the guide portion for guiding the valve body 13 in the valve rod axial direction is divided into the valve chamber side upper guide portion 26 and the fluid flow path side lower guide portion 27, It is not necessary to form a concavo-convex surface for forming the guide portion in a wide range of the inner surface that defines the valve chamber 15B of the valve box 11. This means that the stress due to the anti-rotation reaction applied to the valve body 13 and the stress due to the water pressure entering the valve chamber 15B are less likely to concentrate on the inner surface of the valve box 11, preventing the valve box 11 from being deformed or damaged. It will be possible. That is, durability can be improved under the state where the valve body 13 is reliably guided along the axial direction of the valve stem.
なお、上記実施例においては、上案内部26を案内部材
（下ボンネット）16に形成し、この案内部材16をハウジ
ング15（弁箱本体）の組立フランジ部15Dに取着するか
ら、弁箱本体の内面に案内部形成のための凹凸面を全く
形成することなく、耐久性をより向上できる。In the above embodiment, the upper guide portion 26 is formed on the guide member (lower bonnet) 16, and the guide member 16 is attached to the assembly flange portion 15D of the housing 15 (valve box body). The durability can be further improved without forming any uneven surface for forming the guide portion on the inner surface of the.
ただし、本発明の実施において、案内部材が備える上
案内部は、弁箱本体に設けられる係着凹部（第１図の10
0）に係着されてもよい。この時、案内部材は上記弁箱
本体の係着凹部のみにて回り止めされ、弁箱本体のフラ
ンジ部に取着されなくてもよい。However, in the practice of the present invention, the upper guide portion provided in the guide member is an engaging recess (10 in FIG. 1) provided in the valve body.
0) may be attached. At this time, the guide member does not have to be attached to the flange portion of the valve box main body by being prevented from rotating only by the engaging concave portion of the valve box main body.
また、本発明の実施において、上案内部は弁箱本体と
別部品とされず該弁箱本体に一体的に形成されるもので
あってもよい。Further, in the practice of the present invention, the upper guide portion may be formed integrally with the valve box body without being a separate part from the valve box body.
また、上記実施例にあっては、上案内部26を備える下
ボンネット（案内部材）16がハウジング15に着脱できる
状態で設けられ、かつ上案内部26の内径Ｋを弁室シール
部22の外径Ｄより小さく設定し、弁体13が備える上係合
部24の外径Ｈを弁室シール部22の外径Ｄの近似もしくは
それ以下の値に設定したので、ハウジング15における弁
室15Bの外径Ｇを弁棒軸方向の長い範囲にわたって小さ
くできる。このことは、弁室15Bの外面と管接合フラン
ジ部15Cとの間隙寸法ｌを大きくとることを可能とし、
管接合フランジ部15Cに対するボルト・ナットの装着組
立性を良好とし、弁10の配管作業性を向上できる。なお
この時、ハウジング15に対し弁体13を着脱する場合に
は、上案内部26を備える下ボンネット（案内部材）16が
ハウジング15に対して取外しできるから、弁体13の弁室
シール部22と下ボンネット16とが干渉することなく弁体
13を確実に着脱できる。In the above embodiment, the lower bonnet (guide member) 16 having the upper guide portion 26 is detachably attached to the housing 15, and the inner diameter K of the upper guide portion 26 is outside the valve chamber seal portion 22. Since the outer diameter H of the upper engaging portion 24 of the valve body 13 is set to be smaller than or equal to the outer diameter D of the valve chamber seal portion 22 or smaller than the diameter D, the valve chamber 15B in the housing 15 is The outer diameter G can be reduced over a long range in the axial direction of the valve stem. This makes it possible to increase the gap dimension 1 between the outer surface of the valve chamber 15B and the pipe joint flange portion 15C,
The bolt and nut can be mounted and assembled easily on the pipe joint flange portion 15C, and the piping workability of the valve 10 can be improved. At this time, when the valve body 13 is attached to or detached from the housing 15, the lower bonnet (guide member) 16 including the upper guide portion 26 can be removed from the housing 15, so that the valve chamber seal portion 22 of the valve body 13 is removed. And the lower bonnet 16 do not interfere with the valve body
13 can be securely attached and detached.
なお、本発明の実施において、操作部材はハンドル等
であってもよい。In the implementation of the present invention, the operation member may be a handle or the like.
［発明の効果］ 以上のように、本発明によれば、弁体を弁棒軸方向に
沿って確実に案内する状態下で、耐久性を向上すること
ができる。[Advantages of the Invention] As described above, according to the present invention, durability can be improved in a state in which the valve body is reliably guided along the axial direction of the valve stem.
第１図は本発明の一実施例を示す半断面図、第２図は第
１図のII−II線に沿う矢視図、第３図は案内部材を示す
半断面図、第４図は下案内部を模式的に示す断面図、第
５図は第４図のＶ−Ｖ線に沿う断面図である。 10……弁、 11……弁箱、 12……弁棒、 12A……中間フランジ部、 12B……弁体用おねじ部、 13……弁体、 14……キャップ（操作部材）、 15……ハウジング（弁箱本体）、 15A……流体流路、 15B……弁室、 15D……組立フランジ部、 21……めねじナット（めねじ部）、 22……弁室シール部、 23……弁座シール部、 24……上係合部、 25……下係合部、 26……上案内部、 27……下案内部。1 is a half sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is a half sectional view showing a guide member, and FIG. Sectional drawing which shows a lower guide part typically, FIG. 5 is sectional drawing which follows the VV line of FIG. 10 …… Valve, 11 …… Valve case, 12 …… Valve rod, 12A …… Intermediate flange, 12B …… Valve male thread, 13 …… Valve, 14 …… Cap (operating member), 15 ...... Housing (Valve box body), 15A ...... Fluid flow path, 15B ...... Valve chamber, 15D ...... Assembly flange part, 21 ...... Female thread nut (female thread part), 22 ...... Valve chamber seal part, 23 ...... Valve seat seal part, 24 ...... upper engagement part, 25 ...... lower engagement part, 26 ...... upper guide part, 27 ...... lower guide part.
Claims (1)
対し回転はするが自軸方向には移動しない状態で結合さ
れ、弁箱内に位置する部分に弁体用おねじ部を備える弁
棒と、弁棒の上記おねじ部に螺着されるめねじ部を備
え、弁箱に対して弁棒軸方向に移動はするが回転はしな
い状態で支持され、弁箱の流体流路に連通する弁室内面
に密着する弁室シール部、および弁箱の流体流路内面に
密着する弁座シール部を備えた弁体と、弁棒の弁箱外に
位置する部分に固定され、弁棒を介して弁体を駆動し、
弁体の弁室シール部と弁座シール部を対応する弁室内面
と流体流路内面に対して接離する操作部材とを有してな
る弁の弁体案内構造において、弁体の弁室シール部より
上方の上側面部に上係合部を設けるとともに、弁体の弁
室シール部より下方の下側面部に下係合部を設け、かつ
弁箱の弁室を画成する上部内面に上案内部を設けるとと
もに、弁箱の流体流路を画成する内面に下案内部を設
け、弁体の全開時には該弁体を上案内部のみにて支持
し、弁体の全閉時には該弁体を下案内部のみにて支持す
ることを特徴とする弁の弁体案内構造。1. A valve body which forms a fluid flow path and a valve chamber, and is connected to the valve body while rotating with respect to the valve body but not moving in the direction of its own axis. A valve stem having a threaded portion and a female threaded portion that is screwed to the male threaded portion of the valve stem, and is supported in a state in which it moves in the axial direction of the valve stem but does not rotate with respect to the valve casing. Valve body seal portion that is in close contact with the inner surface of the valve chamber that communicates with the fluid passage of Is fixed to and drives the valve body through the valve rod,
A valve body guide structure for a valve, comprising a valve chamber seal portion and a valve seat seal portion of the valve body, and an operating member for contacting with and separating from the inner surface of the valve passage and the inner surface of the fluid passage. An upper engaging portion is provided on the upper side surface portion above the seal portion, and a lower engaging portion is provided on the lower side surface portion below the valve chamber seal portion of the valve body, and an upper inner surface that defines the valve chamber of the valve box. In addition to the upper guide part, the lower guide part is provided on the inner surface that defines the fluid flow path of the valve box.When the valve body is fully opened, the valve body is supported only by the upper guide part, and when the valve body is fully closed. A valve element guide structure for a valve, wherein the valve element is supported only by a lower guide portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63078596A JP2533608B2 (en) | 1988-03-30 | 1988-03-30 | Valve disc guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63078596A JP2533608B2 (en) | 1988-03-30 | 1988-03-30 | Valve disc guide structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01250680A JPH01250680A (en) | 1989-10-05 |
| JP2533608B2 true JP2533608B2 (en) | 1996-09-11 |
Family
ID=13666286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63078596A Expired - Lifetime JP2533608B2 (en) | 1988-03-30 | 1988-03-30 | Valve disc guide structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2533608B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945361U (en) * | 1982-09-20 | 1984-03-26 | トキコ株式会社 | valve device |
| JPS6212142U (en) * | 1985-07-06 | 1987-01-24 |
-
1988
- 1988-03-30 JP JP63078596A patent/JP2533608B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01250680A (en) | 1989-10-05 |
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