JPH08261353A - On-off valve - Google Patents
On-off valveInfo
- Publication number
- JPH08261353A JPH08261353A JP23782495A JP23782495A JPH08261353A JP H08261353 A JPH08261353 A JP H08261353A JP 23782495 A JP23782495 A JP 23782495A JP 23782495 A JP23782495 A JP 23782495A JP H08261353 A JPH08261353 A JP H08261353A
- Authority
- JP
- Japan
- Prior art keywords
- spindle
- valve
- handle
- protective cover
- tip
- 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.)
- Pending
Links
Landscapes
- Valve Housings (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、高圧ガス等の配
管管路に設置される開閉弁、特にその開閉表示構造に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-off valve installed in a pipeline for high-pressure gas or the like, and more particularly to an open / close display structure thereof.
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】化学
プラント等高圧ガスを多量に扱う設備では、各機器間に
わたって多数のガス配管が敷設される。そして、生産、
保守、安全管理等多枝にわたる目的から、これら配管管
路には、その管路の接続を制御するための開閉弁が多数
設置される。これらの開閉弁の中には、自動制御系から
の指令に基づきいわゆるサーボ機構で機械的に操作され
るタイプのものもあるが、作業者による手動操作で開閉
を行うタイプのものも多数存在する。この場合、その操
作の前提として開閉弁の開閉状態を一定距離離れた位置
から確認する必要がある。2. Description of the Related Art In a facility such as a chemical plant that handles a large amount of high-pressure gas, a large number of gas pipes are laid between the respective devices. And production,
For various purposes such as maintenance and safety management, a large number of on-off valves are installed in these pipelines for controlling the connection of the pipelines. Some of these on-off valves are of a type that is mechanically operated by a so-called servo mechanism based on a command from an automatic control system, but there are many types of valves that are opened and closed manually by an operator. . In this case, it is necessary to confirm the open / closed state of the on-off valve from a position separated by a certain distance as a premise of the operation.
【０００３】ところで、開閉弁の種類の内、仕切弁、い
わゆるゲート弁は、弁本体の弁座に設ける開口径を大き
くして開放操作時の流過抵抗が小さくなるようにしてい
るので、上記開口を開閉するためハンドルの回転操作に
よってその軸方向に駆動されるスピンドルの進退距離も
他の種類の開閉弁に比較して非常に大きい。従って、こ
のスピンドルの突出した長さを観察することで、開閉弁
の開閉状態を容易に確認することができる。Among the types of on-off valves, a sluice valve, a so-called gate valve, has a large opening diameter provided in the valve seat of the valve body to reduce the flow resistance during the opening operation. The advance / retreat distance of the spindle, which is driven in the axial direction by the rotating operation of the handle to open and close the opening, is very large as compared with other types of on-off valves. Therefore, by observing the protruding length of the spindle, the open / closed state of the open / close valve can be easily confirmed.
【０００４】図７は、このゲート弁の上部を一部断面で
示すもので、図は開放操作位置にあり、弁本体１に取り
付けられたハンドル２（ハンドル２は図に示すように、
その軸方向位置が規制されている）の回転操作により、
弁本体１内部の弁座（図示せず）と連結されハンドル２
の中央に形成された雌ねじと螺合する棒状雄ねじからな
るスピンドル３が外方に最大に突出した状態となってい
る。開閉弁の閉操作位置では、図示は省略するが、スピ
ンドル３の突出長さはごくわずかとなり、前述したよう
に、このスピンドル３の突出長さの違いから開閉状態を
容易に判別できる訳である。FIG. 7 is a partial cross-sectional view showing the upper portion of the gate valve. The drawing shows the handle 2 attached to the valve main body 1 in the opening operation position.
Its axial position is regulated)
Handle 2 is connected to a valve seat (not shown) inside valve body 1
The spindle 3 formed of a rod-shaped male screw that is screwed into the female screw formed at the center of the shaft is in a state of being projected to the maximum outward. Although not shown in the drawing, the protruding length of the spindle 3 is very small at the closing operation position of the on-off valve, and as described above, the open / closed state can be easily determined from the difference in the protruding length of the spindle 3. .
【０００５】しかるに、これら開閉弁の現実の設置場所
における環境条件を考えると、特に屋外では風雨や砂塵
その他のゴミに直接晒されるケースも多く、これらの場
所では、スピンドル３に錆が発生したり、また、この錆
の発生を防止するために雄ねじ部分にグリスを塗布する
とこのグリスに各種のゴミや砂が付着し、いずれも開閉
弁の操作に支障を来すことになる。そこで、これら環境
が必ずしも良くない場所に設置される開閉弁では、図４
に点線で示すように、例えばビニール製の有底円筒を逆
にした保護カバー４をスピンドル３の突出部分を覆うよ
うにしてハンドル２に取り付けている。However, considering the environmental conditions at the actual installation locations of these on-off valves, there are many cases where they are directly exposed to wind, rain, sand dust, and other dust, especially outdoors, and in these locations, rust occurs on the spindle 3. Further, if grease is applied to the male screw portion in order to prevent the generation of this rust, various kinds of dust and sand adhere to this grease, which both hinders the operation of the on-off valve. Therefore, in the on-off valve installed in a place where these environments are not always good,
As shown by the dotted line, a protective cover 4 made by reversing a bottomed cylinder made of vinyl, for example, is attached to the handle 2 so as to cover the protruding portion of the spindle 3.
【０００６】この結果、スピンドル３の突出長さが外部
から目視できなくなり、開閉状態の確認が不可となる。
保護カバー４を透明部材とすることも考えられるが、そ
もそも上記したような環境下においては、短期間でその
表面が汚れ、透視機能を喪失する。As a result, the protruding length of the spindle 3 cannot be visually observed from the outside, and the open / closed state cannot be confirmed.
It is conceivable to use the protective cover 4 as a transparent member, but in the first place, under the environment as described above, the surface becomes dirty and the see-through function is lost.
【０００７】この発明は以上のような問題点を解消する
ためになされたもので、スピンドルの突出部分を覆う構
造で、しかもその開閉状態の目視による判別を容易確実
になし得る開閉弁を提供せんとするものである。The present invention has been made in order to solve the above problems, and does not provide an opening / closing valve having a structure for covering the protruding portion of the spindle and capable of easily and surely visually determining the open / closed state. It is what
【０００８】[0008]
【課題を解決するための手段および作用】この発明の請
求項１に係る開閉弁は、スピンドルのハンドルから外方
へ突出した部分を覆う略筒状体であって、その外方の一
端が上記スピンドルの外方先端に取り付けられ、その他
端が上記ハンドルに取り付けられ、その側壁が軸方向の
寸法変化を吸収可能に構成されてなる保護カバーを備え
たものである。この場合、保護カバーはスピンドルの突
出部分を周囲の雰囲気から保護すると同時に、開閉弁の
開閉操作に伴ってその軸方向長さが伸縮するので、この
保護カバーの長さの違いから開閉状態を容易確実に判別
することができる。An on-off valve according to a first aspect of the present invention is a substantially cylindrical body that covers a portion of a spindle that projects outward from a handle, and one end of the outer side is the above-mentioned. The spindle has a protective cover attached to the outer tip, the other end attached to the handle, and a side wall of the spindle configured to absorb a dimensional change in the axial direction. In this case, the protective cover protects the protruding part of the spindle from the surrounding atmosphere, and at the same time, the axial length of the protective cover expands and contracts with the opening / closing operation of the open / close valve. It can be surely determined.
【０００９】また、請求項２に係る開閉弁の保護カバー
は、その軸方向長さが互いにほぼ同一で、その外径が互
いに所定寸法づつ異なる複数の略ラッパ状の筒体片から
なり、これら筒体片のうち最小径または最大径のいずれ
か一方の筒体片にはその先端を閉塞する蓋およびスピン
ドルの外方先端と結合するための取付具を備え、上記筒
体片のうち最小径または最大径のいずれか他方の筒体片
にはハンドルと結合するための取付具を備えたもので、
上記スピンドルの突出長さが最大のときには上記各筒体
片が互いに接合して一体の略ラッパ状の筒体となり、上
記スピンドルの突出長さが最小のときには上記各筒体片
が同一軸方向位置で径方向に重なり、保護カバーの伸縮
がスピンドルの進退移動に対応して円滑になされる。Further, the protective cover for an on-off valve according to claim 2 is composed of a plurality of substantially trumpet-shaped cylindrical pieces whose axial lengths are substantially the same and whose outer diameters differ from each other by a predetermined dimension. One of the minimum diameter and the maximum diameter of the tubular body piece is provided with a lid that closes the tip of the tubular body piece and a fitting for coupling with the outer tip of the spindle. Or one of the maximum diameters is equipped with a fitting for connecting with the handle on the other cylinder piece,
When the protruding length of the spindle is maximum, the cylindrical pieces are joined together to form an integral trumpet-shaped cylindrical body. When the protruding length of the spindle is the minimum, the cylindrical pieces are in the same axial position. And the protective cover expands and contracts smoothly in accordance with the forward and backward movement of the spindle.
【００１０】また、請求項３に係る開閉弁は請求項２に
おいて、各筒体片の外周面に施す表示内容を、上記筒体
片のうち最大径の筒体片とそれ以外の筒体片とで異なる
ようにしたものである。この場合、開閉弁の閉位置で
は、外部からは最大径の筒体片のみが目視されるので、
その外周面に施された表示内容、例えば「赤色」の表示
のみが外部から観察される。一方、開閉弁の開位置で
は、すべての筒体片が目視されるので、外部から観察さ
れる表示内容は、その大部分が、最大径の筒体片に施さ
れた表示内容とは異なる表示内容、例えば「青色」とな
る。従って、保護カバーの伸縮長さの違いに加えて、そ
の外周面に施された表示内容からも開閉状態を区別で
き、開閉判別が一層容易確実になされる。Further, according to a third aspect of the present invention, in the on-off valve according to the second aspect, the display content applied to the outer peripheral surface of each tubular body piece is the tubular piece having the largest diameter among the tubular body pieces and the other tubular body pieces. It is different in and. In this case, at the closed position of the on-off valve, only the cylindrical piece with the maximum diameter is visible from the outside.
Only the display content provided on the outer peripheral surface, for example, the display of "red" is observed from the outside. On the other hand, in the open position of the on-off valve, all the tubular pieces are visually observed, so most of the display content observed from the outside is different from the display content given to the tubular piece with the maximum diameter. The content is, for example, "blue". Therefore, in addition to the difference in the expansion and contraction length of the protective cover, the open / closed state can be distinguished from the display content provided on the outer peripheral surface of the protective cover, and the open / closed determination can be made more easily and surely.
【００１１】また、請求項４に係る開閉弁の保護カバー
は、蛇腹状の筒体からなり、その一端には先端を閉塞す
る蓋およびスピンドルの外方先端と結合するための取付
具を備え、その他端にはハンドルと結合するための取付
具を備えたもので、スピンドルの進退移動に対応して蛇
腹部分が伸縮する。A protective cover for an on-off valve according to a fourth aspect of the present invention is composed of a bellows-shaped cylindrical body, and has a lid at one end thereof for closing the tip and a fitting for coupling with the outer tip of the spindle, The other end is provided with a fitting for coupling with the handle, and the bellows part expands and contracts in response to the forward and backward movement of the spindle.
【００１２】また、請求項５に係る開閉弁の保護カバー
は、所定幅所定長の弾性を有する帯材をその幅方向に重
なりをもたせて螺旋状に巻回して略円筒状にしてなる帯
筒体からなり、その一端には先端を閉塞する蓋および上
記帯材の一端をスピンドルの外方先端に回動可能に取り
付けるための円筒部を有する第１の取付具を備え、その
他端には上記帯材の他端をハンドルに回動可能に取り付
けるための円筒部を有する第２の取付具を備えたもの
で、帯材相互の重なりと螺旋の角度とが適宜変化するこ
とで帯筒体としての高さの変動を補償する。Further, the protective cover for an on-off valve according to a fifth aspect of the present invention is a band cylinder formed by spirally winding a band material having elasticity of a predetermined width and a predetermined length and overlapping it in a width direction to form a substantially cylindrical shape. The body is provided with a lid for closing one end thereof and a first attachment having a cylindrical portion for rotatably attaching one end of the band member to the outer end of the spindle, and the other end thereof with the above A second mounting tool having a cylindrical portion for rotatably mounting the other end of the strips to the handle is provided, and the strip tubular body is formed by appropriately changing the overlap between the strips and the angle of the spiral. Compensate for height variations.
【００１３】また、請求項６に係る開閉弁は請求項５に
おいて、帯筒体の最外周側の帯材先端を第１の取付具の
円筒部内面に取り付け、上記帯筒体の最内周側の帯材先
端を第２の取付具の円筒部外面に取り付け、スピンドル
の突出長さが最小のとき第１の取付具が第２の取付具お
よび帯筒体の外周を覆うようにしたもので、開閉弁の開
閉操作に基づく帯筒体の形状変化が極めて円滑になされ
る。Further, according to a sixth aspect of the present invention, there is provided an on-off valve according to the fifth aspect, wherein the outermost end of the band member on the outermost peripheral side is attached to the inner surface of the cylindrical portion of the first fitting. The front end of the side band member is attached to the outer surface of the cylindrical portion of the second mounting tool so that the first mounting tool covers the outer periphery of the second mounting tool and the band cylinder when the protruding length of the spindle is minimum. Thus, the shape change of the band tube body based on the opening / closing operation of the opening / closing valve is extremely smoothly performed.
【００１４】また、請求項７に係る開閉弁は請求項６に
おいて、第１の取付具と帯筒体とでその外周面に施す表
示内容を異ならせることにより、上記表示内容で開閉弁
の開閉表示を行うようにしたものである。この場合、開
閉弁の閉位置では、外部からは第１の取付具の円筒部の
みが目視されるので、その外周面に施された表示内容、
例えば「赤色」の表示のみが外部から観察される。一
方、開閉弁の開位置では、第１の取付具と帯筒体の大部
分とが目視されるので、外部から観察される表示内容
は、その大部分が第１の取付具の円筒部に施された表示
内容とは異なる表示内容、例えば「青色」となる。従っ
て、保護カバーの伸縮長さの違いに加えて、その外周面
に施された表示内容からも開閉状態を区別でき、開閉判
別が一層容易確実になされる。Further, according to a seventh aspect of the present invention, in the on-off valve according to the sixth aspect, the display contents provided on the outer peripheral surfaces of the first mounting member and the band cylinder are different from each other, so that the on-off valve opens and closes according to the above-mentioned display contents. The display is made. In this case, at the closed position of the on-off valve, only the cylindrical portion of the first fixture is visible from the outside.
For example, only the display of "red" is observed from the outside. On the other hand, in the open position of the on-off valve, the first attachment and most of the band cylinder are visually observed, so that the display content observed from the outside is mostly in the cylindrical portion of the first attachment. The display content is different from the applied display content, for example, “blue”. Therefore, in addition to the difference in the expansion and contraction length of the protective cover, the open / closed state can be distinguished from the display content provided on the outer peripheral surface of the protective cover, and the open / closed determination can be made more easily and surely.
【００１５】[0015]
実施の形態１．図１は、この発明の実施の形態１による
開閉弁の構成を一部断面で示す図である。図において、
弁本体１、ハンドル２およびスピンドル３は従来と同一
であり、個々の説明は省略する。Embodiment 1. 1 is a partial cross-sectional view of the structure of an on-off valve according to a first embodiment of the present invention. In the figure,
The valve body 1, the handle 2 and the spindle 3 are the same as the conventional ones, and thus their individual explanations are omitted.
【００１６】５はこの発明の主要部である保護カバー
で、その詳細を図２を参照して説明する。図２におい
て、６ａ〜６ｎは筒体片で、それぞれ略ラッパ状、即
ち、円錐面の形状のものを軸に直角な面で切断した形に
成形されており、各々高さは同一であるが、径寸法は所
定寸法づつ異なっている。図では、最上段の筒体片６ａ
が最小径、最下段の筒体片６ｎが最大径となっている。
そして、筒体片６n-1と６ｎとで例示するように、筒体
片６ｎより１段小径の筒体片６n-1を上方へ引き上げる
と、筒体片６n-1の下端外周が筒体片６ｎの上端内周に
当接接合して両筒体片が一体となるよう、各筒体片６の
高さと径が設定されている。Reference numeral 5 is a protective cover, which is a main part of the present invention, and its details will be described with reference to FIG. In FIG. 2, 6a to 6n are tubular pieces, each of which is formed into a substantially trumpet shape, that is, a conical surface shape cut along a plane perpendicular to the axis, and has the same height. , The diametrical dimensions differ by a predetermined dimension. In the figure, the uppermost tubular piece 6a
Is the minimum diameter, and the lowermost tubular piece 6n is the maximum diameter.
Then, as illustrated by the tubular pieces 6 n-1 and 6 n , when the tubular piece 6 n-1 having a diameter one step smaller than the tubular piece 6 n is pulled upward, the lower end outer circumference of the tubular piece 6 n-1 The height and the diameter of each tubular piece 6 are set so that the tubular piece 6n comes into contact with the inner periphery of the upper end of the tubular piece 6n to be joined together.
【００１７】そして、各筒体片６は、例えばプラスチッ
ク成形で製造されるが、その外周面には、表示内容が施
されている。図２中、ハッチング部分がこれを示し、右
上がりのハッチング部分は、開閉弁の開状態を表すよう
例えば「青色」に着色され、右下がりのハッチング部分
は、開閉弁の閉状態を表すよう例えば「赤色」に着色さ
れる。Each of the cylindrical pieces 6 is manufactured, for example, by plastic molding, and the outer peripheral surface of the cylindrical piece 6 is provided with a display content. In FIG. 2, the hatched portion indicates this, the hatched portion that rises to the right is colored, for example, "blue" to indicate the open state of the on-off valve, and the hatched portion that descends to the right indicates that it is in the closed state, for example. It is colored "red".
【００１８】７は、最上段の筒体片６ａの上端を閉塞す
る蓋で、筒体片６ａに一体に固着されている。８は取付
具としてのビスで、筒体片６ａの側壁の周方向４個所に
形成されたねじ穴９を挿通させ、筒体片６ａをスピンド
ル３の先端に結合して固定させるためのものである。Reference numeral 7 denotes a lid that closes the upper end of the uppermost tubular piece 6a and is integrally fixed to the tubular piece 6a. Reference numeral 8 denotes a screw as a mounting tool for inserting the screw holes 9 formed at four circumferential positions of the side wall of the cylindrical body piece 6a to fix the cylindrical body piece 6a to the tip of the spindle 3. is there.
【００１９】１０は、最下段の筒体片６ｎの下端外周に
一体に形成されたフランジ状の取付具としての取付板、
１１は割部１１ａを設けたリング状の当板である。そし
て、筒体片６ａは、図１に示すように、その取付板１０
と当板１１とでハンドル２を挟むようにしてビス１２と
ナット１３を使用してハンドル２に結合して固定する。Reference numeral 10 denotes a mounting plate as a flange-shaped mounting tool integrally formed on the outer periphery of the lower end of the lowermost tubular piece 6n.
Reference numeral 11 is a ring-shaped contact plate provided with a split portion 11a. Then, as shown in FIG. 1, the tubular piece 6a has its mounting plate 10
The handle 2 is sandwiched between the contact plate 11 and the contact plate 11, and is fixed to the handle 2 by using the screw 12 and the nut 13.
【００２０】次に、開閉弁の開閉操作に伴う保護カバー
５の動作について図３により説明する。図３（１）は開
閉弁の開位置における保護カバー５の外観を示し、ここ
では、スピンドル３の突出長さが最大となっており、ス
ピンドル３の外方先端に取り付けられた筒体片６ａが最
高位置にまで上昇しており、すべての筒体片６が互いに
接合して一体の筒体となっている。図３（２）は開閉弁
の閉位置における保護カバー５の外観を示し、ここで
は、スピンドル３の突出長さが最小となっており、各筒
体片６は最下段の筒体片６ｎの内側に収容された形態
で、外部からは最下段の筒体片６ｎのみが観察される。Next, the operation of the protective cover 5 associated with the opening / closing operation of the opening / closing valve will be described with reference to FIG. FIG. 3A shows the appearance of the protective cover 5 at the open position of the on-off valve, in which the protruding length of the spindle 3 is maximum and the cylindrical piece 6 a attached to the outer tip of the spindle 3 is shown. Has risen to the highest position, and all the tubular body pieces 6 are joined to each other to form an integral tubular body. FIG. 3 (2) shows the appearance of the protective cover 5 in the closed position of the on-off valve, in which the protruding length of the spindle 3 is minimum, and each tubular piece 6 is the lowermost tubular piece 6n. Only the lowermost tubular piece 6n is observed from the outside while being housed inside.
【００２１】図３から明確に理解できる通り、この実施
の形態１では、開閉弁の開閉操作に応じて外部から目視
できる保護カバー５の高さが大きく変化するので、同高
さから容易確実に開閉弁の開閉状態を判別することがで
きる。更に、この形態例では、最大径の筒体片６ｎとそ
れ以外の筒体片６ａ〜６n-1とで異なる表示内容（前者
が「赤色」、後者が「青色」）を各外周面に施すように
しているので、開位置では、保護カバー５の大部分が
「青色」に見え（図３（１））、閉位置では、「赤色」
に見える（図３（２））。従って、この表示内容からも
開閉状態の判別が一層容易確実になされる。As can be clearly understood from FIG. 3, in the first embodiment, the height of the protective cover 5 which can be seen from the outside greatly changes in accordance with the opening / closing operation of the opening / closing valve, so that the height can be easily and surely adjusted. It is possible to determine the open / closed state of the open / close valve. Further, in this embodiment, different display contents (the former is “red” and the latter is “blue”) are displayed on each outer peripheral surface of the cylindrical piece 6n having the maximum diameter and the other cylindrical pieces 6a to 6n -1. Since it is applied, most of the protective cover 5 looks "blue" in the open position (Fig. 3 (1)), and "red" in the closed position.
Visible (Fig. 3 (2)). Therefore, the open / closed state can be more easily and surely determined from this display content.
【００２２】なお、開閉弁の開閉のいずれの操作位置に
あっても、保護カバー５が、周囲の汚れた雰囲気からス
ピンドル３を保護する機能を発揮することは勿論であ
る。It is needless to say that the protective cover 5 exerts a function of protecting the spindle 3 from a dirty atmosphere around the opening / closing valve at any operation position.
【００２３】実施の形態２．なお、実施の形態１では、
各筒体片６は下方に向けて拡がる形状としたが、逆に、
上方に向けて拡がる形状のものとしてもよい。即ち、筒
体片６ａが最大径となってスピンドル３の外方先端に結
合され、筒体片６ｎが最小径となってハンドル２に結合
されることになる。この場合も、実施の形態１と同様の
効果を奏する。Embodiment 2. In the first embodiment,
Although each tubular piece 6 has a shape that expands downward, conversely,
The shape may be such that it expands upward. That is, the cylindrical piece 6a has the maximum diameter and is connected to the outer tip of the spindle 3, and the cylindrical piece 6n has the minimum diameter and is connected to the handle 2. Also in this case, the same effect as that of the first embodiment is achieved.
【００２４】実施の形態３．上記各形態例では、保護カ
バーを複数の筒体片を組み合わせた構造とすることによ
って、その側壁の軸方向の寸法変化を吸収可能とした
が、保護カバーを蛇腹状の円筒構造のものとしてもよ
い。この場合も、開閉弁の開閉に応じて目視できる保護
カバーの高さが変化するので、この高さの変化から開閉
弁の開閉状態を容易確実に判別することができる。ここ
で、蛇腹円筒として、例えばステンレス材を使用したベ
ローを採用してもよい。Embodiment 3. In each of the above-described embodiments, the protective cover has a structure in which a plurality of cylindrical pieces are combined to absorb the dimensional change in the axial direction of the side wall, but the protective cover may have a bellows-shaped cylindrical structure. Good. In this case as well, the height of the protective cover that can be visually recognized changes according to the opening / closing of the on-off valve, so the open / closed state of the on-off valve can be easily and reliably determined from this change in height. Here, as the bellows cylinder, for example, a bellow using a stainless material may be adopted.
【００２５】実施の形態４．なお、上記各形態例では、
保護カバーはその軸方向と直角の平面で切断した断面
が、いずれも円形となるものであるが、円形に限らず、
四角等多角形となるものであってもよい。Fourth Embodiment In addition, in each of the above-mentioned form examples,
The protective cover has a circular cross section taken along a plane perpendicular to its axial direction, but is not limited to a circular shape.
It may be a polygon such as a square.
【００２６】実施の形態５．図４〜６は、この発明の実
施の形態５による保護カバー５を説明するもので、図４
は開閉弁の開位置における状態を一部断面で示す図、図
５は開閉弁の閉位置における状態を一部断面で示す図、
図６はその保護カバーを展開して、各構成部品を個別に
示す斜視図である。図において、１、２、３は先の形態
例と同じく、それぞれ弁本体、ハンドル、およびスピン
ドルである。Embodiment 5. 4 to 6 illustrate a protective cover 5 according to Embodiment 5 of the present invention.
Is a partial cross-sectional view of the open / close valve in the open position, and FIG. 5 is a partial cross-sectional view of the open / close valve in the closed position.
FIG. 6 is a perspective view showing the constituent parts individually with the protective cover expanded. In the figure, reference numerals 1, 2, and 3 are a valve body, a handle, and a spindle, respectively, as in the above-described embodiment.
【００２７】１４は帯筒体で、所定幅所定長の弾性を有
する帯材１４ａをその幅方向に重なりをもたせて螺旋状
に巻回して円筒状にしたもので、その形状に保持する要
領については後述する。なお、帯材１４ａとしては、例
えば０．３５ｍｍ厚のポリエステルフィルム（具体例と
して東洋レーヨン製商品名ルミラーが該当）を材料とす
る。そして、帯筒体１４の外径を４０ｍｍ、最大長を２
００ｍｍとすると、帯材１４ａの幅を４０ｍｍとして、
長さ１３００ｍｍ程度が必要となる。これにより、帯材
１４ａは最小でもその幅寸法の約１／２が重なるように
なり、帯筒体１４の軸方向の伸縮が円滑になされる。Reference numeral 14 designates a strip cylinder, which is a strip of elastic material 14a having a predetermined width and a predetermined length, which is spirally wound into a cylindrical shape with an overlap in the width direction. Will be described later. The band material 14a is made of, for example, a 0.35 mm-thick polyester film (a specific example is Lumirror manufactured by Toyo Rayon Co., Ltd.). The outer diameter of the band cylinder 14 is 40 mm, and the maximum length is 2
If the width is 00 mm, the width of the strip 14a is 40 mm,
A length of about 1300 mm is required. As a result, the strip material 14a overlaps at least about ½ of the width dimension thereof, so that the strip tube body 14 can be smoothly expanded and contracted in the axial direction.
【００２８】１５は帯筒体１４の上端をスピンドル３の
外方先端に取り付けるための第１の取付具で、以下、こ
の第１の取付具１５の構成を詳細に説明する。先ず、１
６は調整キャップで、スピンドル３の外方先端に被せる
ようにして固定ビス１７によりスピンドル３に取り付け
固定される。調整キャップ１６の中央には、後述する調
整ビス１９が螺合するネジ穴１６ａが形成されている。
１８は円筒部１８ａの上端が蓋１８ｂで閉塞された形状
の上部キャップで、蓋１８ｂの中央には、後述する調整
ビス１９が貫通する穴１８ｃが形成されている。また、
円筒部１８ａの下端近傍には、帯材１４ａの上端を取り
付けるため、内側へ突出する爪１８ｄが周方向に９０゜
間隔で３個所形成されている。Reference numeral 15 is a first mounting member for mounting the upper end of the band cylinder 14 to the outer end of the spindle 3. The structure of the first mounting member 15 will be described in detail below. First, 1
An adjustment cap 6 is attached and fixed to the spindle 3 by a fixing screw 17 so as to cover the outer tip of the spindle 3. A screw hole 16a into which an adjustment screw 19 described later is screwed is formed in the center of the adjustment cap 16.
Reference numeral 18 denotes an upper cap having a shape in which the upper end of the cylindrical portion 18a is closed by a lid 18b, and a hole 18c through which an adjustment screw 19 described later penetrates is formed in the center of the lid 18b. Also,
Near the lower end of the cylindrical portion 18a, in order to attach the upper end of the strip 14a, three inwardly projecting claws 18d are formed at 90 ° intervals in the circumferential direction.
【００２９】１９は上部キャップ１８の穴１８ｃを貫通
して調整キャップ１６のネジ穴１６ａに螺合される調整
ビスで、後述するように、その頭部１９ａが上部キャッ
プ１８の蓋１８ｂから所定寸法突出するようその長さが
設定されている。そして、この調整ビス１９を軸にし
て、上部キャップ１８はスピンドル３に対して回動可能
に取り付けられることになる。以上の、１６〜１９によ
り第１の取付具１５を構成する。Reference numeral 19 denotes an adjustment screw which penetrates the hole 18c of the upper cap 18 and is screwed into the screw hole 16a of the adjustment cap 16, and the head 19a thereof has a predetermined size from the lid 18b of the upper cap 18 as will be described later. Its length is set to project. The upper cap 18 is rotatably attached to the spindle 3 with the adjusting screw 19 as an axis. The above 16 to 19 constitute the first fixture 15.
【００３０】次に、帯筒体１４の下端をハンドル２に取
り付けるための第２の取付具２０について説明する。２
１はハンドル２の上面に取り付け固定される円板状の固
定台で、穴２１ａを使用し、図示しないビスによってハ
ンドル２に取り付けられる。２２は内側にツバ部２２ａ
が形成された押えカバーで、後述する下部キャップ２３
下端のフランジ部２３ｂをツバ部２２ａで取り囲むよう
にして固定台２１に取り付け固定される。なお、この取
り付けは、押えカバー２２の穴２２ｂと固定台２１の穴
２１ｂとを使用して行う。Next, the second mounting tool 20 for mounting the lower end of the band cylinder 14 on the handle 2 will be described. Two
Reference numeral 1 denotes a disc-shaped fixing base that is attached and fixed to the upper surface of the handle 2, and uses a hole 21a and is attached to the handle 2 with a screw (not shown). 22 is a brim 22a inside
The lower cover 23, which will be described later, is a presser cover formed with
The flange portion 23b at the lower end is attached and fixed to the fixing base 21 so as to surround the flange portion 22a. It should be noted that this attachment is performed using the hole 22b of the presser cover 22 and the hole 21b of the fixed base 21.
【００３１】２３は円筒部２３ａの下端にフランジ部２
３ｂが形成された下部キャップで、そのフランジ部２３
ｂが押えカバー２２のツバ部２２ａに係合し、ハンドル
２に対して回動可能に取り付けられる。また、円筒部２
３ａの上端近傍には、帯材１４ａの下端を取り付けるた
め外側へ突出する爪２３ｃが周方向９０゜間隔で３個所
形成されている。Reference numeral 23 denotes a flange portion 2 at the lower end of the cylindrical portion 23a.
3b is a lower cap, the flange portion 23
b is engaged with the brim portion 22a of the presser cover 22 and is rotatably attached to the handle 2. Also, the cylindrical portion 2
In the vicinity of the upper end of 3a, three claws 23c projecting outward for attaching the lower end of the strip 14a are formed at 90 ° intervals in the circumferential direction.
【００３２】なお、開閉弁の閉位置（図５）で、帯材１
４ａの幅寸法まで短くなった帯筒体１４を上部キャップ
１８と下部キャップ２３との間に収容できるよう、円筒
部２３ａに対して円筒部１８ａの径を大きくしている。
以上の、２１〜２３により第２の取付具２０を構成す
る。At the closed position of the on-off valve (FIG. 5), the strip 1
The diameter of the cylindrical portion 18a is made larger than that of the cylindrical portion 23a so that the strip tube body 14 shortened to the width dimension of 4a can be housed between the upper cap 18 and the lower cap 23.
The above-mentioned 21 to 23 constitute the second fixture 20.
【００３３】次に、開閉弁の開閉操作に伴う保護カバー
５の動作について主として図４、５により説明する。先
ず、図４は開閉弁の開位置で、ここでは、スピンドル３
の突出長さが最大となっており、帯材１４ａの上端を固
定した上部キャップ１８が最高位置にある。従って、帯
筒体１４は最も引き延ばされた状態で、各帯材１４ａは
その幅の約１／２が重なりあってスピンドル３を覆う形
状となっている。帯材１４ａはその弾性で常にその径が
広がろうとするので、帯材１４ａの各巻回部分は互いに
密接した状態でこの帯筒体１４はスピンドル３を外気か
らほぼ完全に遮断する。Next, the operation of the protective cover 5 associated with the opening / closing operation of the opening / closing valve will be described mainly with reference to FIGS. First, FIG. 4 shows the open position of the on-off valve, here, the spindle 3
Has the maximum protruding length, and the upper cap 18 that fixes the upper end of the strip 14a is at the highest position. Therefore, in the most stretched state of the band cylinder 14, each band member 14a has a shape in which about 1/2 of the width of the band member 14a overlaps and covers the spindle 3. Since the band member 14a tends to widen its diameter due to its elasticity, the band cylinder 14 almost completely shuts off the spindle 3 from the outside air in a state where the winding parts of the band member 14a are in close contact with each other.
【００３４】次に、この状態から開閉弁を閉じるためハ
ンドル２を操作すると、これに伴いスピンドル３の先端
が下降していき、やがて調整ビス１９の頭部１９ａが上
部キャップ１８の蓋１８ｂに当接して上部キャップ１８
を押し下げ、帯筒体１４はその最長姿勢から次第にその
長さを短縮することになる。この短縮する過程で、螺旋
状に巻回されている帯材１４ａの傾斜角度は次第に緩や
かになり、またそれに伴い帯材１４ａの周長も変化す
る。即ち、これらの変化を許容しないと、帯筒体１４の
円滑な伸縮動作が達成されない。Next, when the handle 2 is operated to close the on-off valve from this state, the tip of the spindle 3 descends accordingly, and the head 19a of the adjusting screw 19 eventually contacts the lid 18b of the upper cap 18. Contact top cap 18
Is pushed down, and the length of the band cylinder 14 is gradually shortened from its longest position. In the process of shortening, the inclination angle of the spirally wound strip 14a gradually becomes gentle, and the circumferential length of the strip 14a also changes accordingly. That is, if these changes are not allowed, the smooth expansion and contraction operation of the band cylinder 14 cannot be achieved.
【００３５】前述した通り、帯材１４ａの両端を支持す
る上部キャップ１８および下部キャップ２３をいずれも
回動可能な構造としているのは、上記した帯筒体１４の
円滑な伸縮動作を実現するためである。As described above, the upper cap 18 and the lower cap 23 supporting both ends of the strip 14a are both rotatable so that the strip cylinder 14 can be smoothly expanded and contracted. Is.
【００３６】図５は開閉弁が完全な閉位置に達した状態
を示すもので、ここでは、上部キャップ１８が帯筒体１
４および下部キャップ２３を外周から覆った形となって
いる。なお、図に示すように、調整ビス１９を多少長め
にしているのは、スピンドル３の最低位置で頭部１９ａ
が上部キャップ１８を無理に押さえ込んで、帯筒体１４
が損傷することを未然に防止するためである。FIG. 5 shows a state in which the on-off valve has reached the completely closed position. Here, the upper cap 18 is the band cylinder body 1.
4 and the lower cap 23 are covered from the outer periphery. As shown in the figure, the reason why the adjusting screw 19 is made slightly longer is that the head 19a is at the lowest position of the spindle 3.
Presses the upper cap 18 forcibly,
This is to prevent damage to the material.
【００３７】以上のように、保護カバー５は、開閉弁の
操作位置の如何にかかわらず、周囲の汚れた雰囲気から
スピンドル３を遮断するとともに、開閉操作に応じて、
外部から目視できる保護カバー５の高さが大きく変化す
るので、同高さから容易確実に開閉弁の開閉状態を判別
することができる。As described above, the protective cover 5 shields the spindle 3 from the surrounding dirty atmosphere regardless of the operating position of the open / close valve, and in response to the open / close operation,
Since the height of the protective cover 5 that can be seen from the outside greatly changes, the open / closed state of the open / close valve can be easily and reliably determined from the same height.
【００３８】また、帯筒体１４と上部キャップ１８との
外周面に互いに異なる表示内容を施すようにすれば、例
えば、前者には「赤色」、後者には「青色」を施すよう
にすれば、開位置では、保護カバー５の大部分が「青
色」に見え、閉位置では、「赤色」に見える。従って、
この表示内容からも開閉状態の判別が一層容易確実にな
される。If the outer peripheral surfaces of the band cylinder 14 and the upper cap 18 are given different display contents, for example, "red" is given to the former and "blue" is given to the latter. In the open position, most of the protective cover 5 looks "blue", and in the closed position it looks "red". Therefore,
The open / closed state can be more easily and surely determined from the displayed contents.
【００３９】なお、帯材１４ａの材料、また、その第１
の取付具１５および第２の取付具２０への取付構造等に
ついては、上記形態例で説明した内容に限られるもので
ないことは勿論である。The material of the strip 14a and its first
It is needless to say that the mounting structure and the like to the mounting member 15 and the second mounting member 20 are not limited to the contents described in the above-described embodiment.
【００４０】[0040]
【発明の効果】以上のように、請求項１に係る開閉弁に
おいては、その軸方向の寸法変化を吸収可能な所定の保
護カバーを備えたので、この保護カバーの長さの変化か
ら開閉弁の開閉状態を目視により容易確実に判別するこ
とが可能となる。As described above, in the on-off valve according to the first aspect, since the predetermined protective cover capable of absorbing the dimensional change in the axial direction is provided, the on-off valve is changed from the change in the length of the protective cover. It is possible to easily and surely judge the open / closed state of the eye.
【００４１】また、請求項２に係る開閉弁の保護カバー
は、所定の筒体片と取付具とで構成されているので、開
閉弁の開閉に伴う保護カバーの軸方向の寸法変化が円滑
になされる。Further, since the protective cover of the opening / closing valve according to the second aspect is constituted by the predetermined tubular piece and the fitting, the dimensional change of the protective cover in the axial direction due to the opening / closing of the opening / closing valve is smooth. Done.
【００４２】また、請求項３に係る開閉弁においては、
各筒体片の外周面に施す表示内容を、上記筒体片のうち
最大径の筒体片とそれ以外の筒体片とで異なるようにし
たので、この保護カバーの外周面に施された表示内容に
よる判別も可能となり、開閉弁の開閉状態の目視による
判別がより一層容易確実になる。Further, in the on-off valve according to claim 3,
Since the display content given to the outer peripheral surface of each tubular body piece is made different between the tubular body piece having the largest diameter among the tubular body pieces and the other tubular body pieces, it is provided on the outer peripheral surface of this protective cover. It is also possible to make a distinction based on the displayed contents, making it easier and more reliable to make a visual distinction of the open / closed state of the open / close valve.
【００４３】また、請求項４に係る開閉弁の保護カバー
は、蛇腹状の所定の筒体で構成されているので、開閉弁
の開閉に伴う保護カバーの軸方向の寸法変化が円滑にな
される。Further, since the protective cover of the opening / closing valve according to the fourth aspect is constituted by a predetermined bellows-shaped cylindrical body, the dimensional change of the protective cover in the axial direction due to the opening / closing of the opening / closing valve is smoothly performed. .
【００４４】また、請求項５に係る開閉弁の保護カバー
は、所定の帯筒体と第１および第２の取付具とで構成さ
れているので、開閉弁の開閉に伴う保護カバーの軸方向
の寸法変化が円滑になされる。Further, since the protective cover of the opening / closing valve according to the fifth aspect is constituted by the predetermined band cylinder and the first and second attachments, the protective cover axial direction along with the opening / closing of the opening / closing valve. Dimensional changes can be made smoothly.
【００４５】また、請求項６に係る帯筒体は、その外周
側先端を第１の取付具の円筒部内面に、その内周側先端
を第２の取付具の円筒部外面にそれぞれ取り付けるよう
にしたので、帯筒体の伸縮動作が一層円滑になされる。Further, in the band cylinder according to the sixth aspect, the tip on the outer peripheral side is attached to the inner surface of the cylindrical portion of the first fixture, and the tip on the inner peripheral side is attached to the outer surface of the cylindrical portion of the second fixture. Therefore, the expansion and contraction operation of the band cylinder can be performed more smoothly.
【００４６】また、請求項７に係る開閉弁においては、
第１の取付具と帯筒体とでその外周面に施す表示内容を
異ならせるようにしたので、この表示内容による判別も
可能となり、開閉弁の開閉状態の目視による判別がより
一層容易確実になる。Further, in the on-off valve according to claim 7,
Since the display contents provided on the outer peripheral surface of the first mounting member and the band cylinder are made different, it is possible to make a determination based on the display contents, and it is easier and more reliable to visually determine the open / closed state of the on-off valve. Become.
【図１】 この発明の実施の形態１による開閉弁の構成
を一部断面で示す図である。FIG. 1 is a partial cross-sectional view of the structure of an on-off valve according to a first embodiment of the present invention.
【図２】 図１の保護カバー５の詳細を単体で示す斜視
図である。FIG. 2 is a perspective view showing details of the protective cover 5 of FIG. 1 as a single body.
【図３】 図１の開閉弁の開閉動作を説明するための斜
視図である。FIG. 3 is a perspective view for explaining an opening / closing operation of the opening / closing valve of FIG.
【図４】 この発明の実施の形態５による開閉弁に係る
もので、その開位置における状態を一部断面で示す図で
ある。FIG. 4 is a partial sectional view showing a state in an open position according to an on-off valve according to a fifth embodiment of the present invention.
【図５】 同じく開閉弁の閉位置における状態を一部断
面で示す図である。FIG. 5 is a partial cross-sectional view showing the state of the on-off valve in the closed position.
【図６】 図４、図５の保護カバーを展開して各構成部
品を個別に示す斜視図である。FIG. 6 is a perspective view showing the constituent parts of the protective cover of FIGS.
【図７】 従来の開閉弁の構成を一部断面で示す図であ
る。FIG. 7 is a partial cross-sectional view showing the structure of a conventional on-off valve.
１ 弁本体、２ ハンドル、３ スピンドル、５ 保護
カバー、６ａ〜６ｎ 筒体片、７ 蓋、８ ビス、１０
取付板、１１ 当板、１２ ビス、１３ ナット、１
４ 帯筒体、１４ａ 帯材、１５ 第１の取付具、１８
上部キャップ、１８ａ 円筒部、１８ｂ 蓋、２０
第２の取付具、２３ 下部キャップ、２３ａ 円筒部。1 valve body, 2 handle, 3 spindle, 5 protective cover, 6a to 6n tubular piece, 7 lid, 8 screw, 10
Mounting plate, 11 current plate, 12 screws, 13 nuts, 1
4 band cylinder, 14a band material, 15 1st attachment, 18
Upper cap, 18a cylindrical portion, 18b lid, 20
Second fixture, 23 Lower cap, 23a Cylindrical part.
Claims (7)
連結された棒状雄ねじからなるスピンドル、および中央
に上記スピンドルの雄ねじと螺合する雌ねじが形成され
その軸方向位置が規制されるように上記弁本体に取り付
けられたハンドルを備え、上記ハンドルを回転させるこ
とにより上記スピンドルをその軸方向に進退させて開閉
操作を行う開閉弁において、 上記スピンドルのハンドルから外方へ突出した部分を覆
う略筒状体であって、その外方の一端が上記スピンドル
の外方先端に取り付けられ、その他端が上記ハンドルに
取り付けられ、その側壁が軸方向の寸法変化を吸収可能
に構成されてなる保護カバーを備えたことを特徴とする
開閉弁。1. A valve main body having a valve seat inside, a spindle composed of a rod-shaped male screw connected to the valve seat, and a female screw threadedly engaged with the male screw of the spindle in the center to regulate its axial position. In the opening / closing valve which is provided with a handle attached to the valve body and which is opened / closed by rotating the handle to advance / retreat the spindle in the axial direction, a portion protruding outward from the handle of the spindle is provided. It is a substantially cylindrical body that covers, one end of which is attached to the outer tip of the spindle and the other end of which is attached to the handle, and its side wall is configured to be capable of absorbing dimensional changes in the axial direction. An on-off valve with a protective cover.
ほぼ同一で、その外径が互いに所定寸法づつ異なる複数
の略ラッパ状の筒体片からなり、これら筒体片のうち最
小径または最大径のいずれか一方の筒体片にはその先端
を閉塞する蓋およびスピンドルの外方先端と結合するた
めの取付具を備え、上記筒体片のうち最小径または最大
径のいずれか他方の筒体片にはハンドルと結合するため
の取付具を備え、上記スピンドルの突出長さが最大のと
きには上記各筒体片が互いに接合して一体の略ラッパ状
の筒体となり、上記スピンドルの突出長さが最小のとき
には上記各筒体片が同一軸方向位置で径方向に重なるよ
うにしたことを特徴とする請求項１記載の開閉弁。2. The protective cover is made up of a plurality of substantially trumpet-shaped tubular pieces whose axial lengths are substantially the same and whose outer diameters differ from each other by a predetermined dimension. Either one of the maximum diameters is equipped with a lid for closing the tip and a fitting for coupling with the outer tip of the spindle. The tubular piece is provided with a fitting for coupling with a handle, and when the protruding length of the spindle is maximum, the tubular pieces are joined to each other to form an integral trumpet-shaped tubular body. The on-off valve according to claim 1, wherein when the length is minimum, the cylindrical pieces are arranged to overlap each other in the radial direction at the same axial position.
記筒体片のうち最大径の筒体片とそれ以外の筒体片とで
異なるようにすることにより、上記表示内容で開閉弁の
開閉表示を行うようにしたことを特徴とする請求項２記
載の開閉弁。3. The display content provided on the outer peripheral surface of each tubular piece is made different by the tubular piece having the largest diameter among the tubular pieces and the other tubular piece. The on-off valve according to claim 2, wherein the on-off valve is opened and closed.
その一端には先端を閉塞する蓋およびスピンドルの外方
先端と結合するための取付具を備え、その他端にはハン
ドルと結合するための取付具を備えたことを特徴とする
請求項１記載の開閉弁。4. The protective cover is formed of a bellows-shaped tubular body,
2. The lid for closing the tip and a fitting for connecting to the outer tip of the spindle at one end thereof, and a fitting for connecting to the handle at the other end. On-off valve.
する帯材をその幅方向に重なりをもたせて螺旋状に巻回
して略円筒状にしてなる帯筒体からなり、その一端には
先端を閉塞する蓋および上記帯材の一端をスピンドルの
外方先端に回動可能に取り付けるための円筒部を有する
第１の取付具を備え、その他端には上記帯材の他端をハ
ンドルに回動可能に取り付けるための円筒部を有する第
２の取付具を備えたことを特徴とする請求項１記載の開
閉弁。5. The protective cover is composed of a strip tube body formed by spirally winding a strip material having a predetermined width and a predetermined length and having an elasticity in the width direction so as to have a substantially cylindrical shape, and at one end thereof. A lid for closing the tip and a first attachment having a cylindrical portion for rotatably attaching one end of the strip to the outer tip of the spindle are provided, and the other end has the other end of the strip as a handle. The on-off valve according to claim 1, further comprising a second attachment having a cylindrical portion for rotatably attaching.
付具の円筒部内面に取り付け、上記帯筒体の最内周側の
帯材先端を第２の取付具の円筒部外面に取り付け、スピ
ンドルの突出長さが最小のとき第１の取付具が第２の取
付具および帯筒体の外周を覆うようにしたことを特徴と
する請求項５記載の開閉弁。6. The outermost band end of the band cylinder is attached to the inner surface of the cylindrical portion of the first fitting, and the innermost band end of the band cylinder is attached to the second fixture. 6. The on-off valve according to claim 5, wherein the first mounting member is attached to the outer surface of the part and the first mounting member covers the outer periphery of the second mounting member and the band cylinder when the protruding length of the spindle is minimum.
施す表示内容を異ならせることにより、上記表示内容で
開閉弁の開閉表示を行うようにしたことを特徴とする請
求項６記載の開閉弁。7. The open / close valve open / close display is performed according to the display contents by making the display contents provided on the outer peripheral surface of the first attachment and the band cylinder different from each other. Open / close valve according to item 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23782495A JPH08261353A (en) | 1995-01-27 | 1995-08-22 | On-off valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7-31768 | 1995-01-27 | ||
| JP3176895 | 1995-01-27 | ||
| JP23782495A JPH08261353A (en) | 1995-01-27 | 1995-08-22 | On-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08261353A true JPH08261353A (en) | 1996-10-11 |
Family
ID=26370283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23782495A Pending JPH08261353A (en) | 1995-01-27 | 1995-08-22 | On-off valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08261353A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011231804A (en) * | 2010-04-23 | 2011-11-17 | Inai Keiji | Valve rod cover |
| JP2016027350A (en) * | 2015-11-02 | 2016-02-18 | 元浩 岡田 | Nuclear power plant system |
| CN107990035A (en) * | 2017-12-04 | 2018-05-04 | 吕小红 | A kind of valve protective cover |
| JP2020078259A (en) * | 2018-11-13 | 2020-05-28 | 株式会社クボタケミックス | Agriculture water supply tap, agriculture water supply device and agriculture water supply system |
-
1995
- 1995-08-22 JP JP23782495A patent/JPH08261353A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011231804A (en) * | 2010-04-23 | 2011-11-17 | Inai Keiji | Valve rod cover |
| JP2016027350A (en) * | 2015-11-02 | 2016-02-18 | 元浩 岡田 | Nuclear power plant system |
| CN107990035A (en) * | 2017-12-04 | 2018-05-04 | 吕小红 | A kind of valve protective cover |
| JP2020078259A (en) * | 2018-11-13 | 2020-05-28 | 株式会社クボタケミックス | Agriculture water supply tap, agriculture water supply device and agriculture water supply system |
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