JP3773628B2

JP3773628B2 - Opening and closing device for lid of screen housing part of strainer

Info

Publication number: JP3773628B2
Application number: JP19146897A
Authority: JP
Inventors: 栄中野; 文教長谷川; 良昭服部; 啓嗣生駒; 正司塙; 伸介竹内
Original assignee: Takasago Thermal Engineering Co Ltd
Current assignee: Takasago Thermal Engineering Co Ltd
Priority date: 1997-07-16
Filing date: 1997-07-16
Publication date: 2006-05-10
Anticipated expiration: 2017-07-16
Also published as: JPH1133317A

Description

【０００１】
【発明の属する技術分野】
本発明は、地域冷暖房などに用いられる冷温水用又は冷却水用の大口径の配管の途中に設置されるストレーナーにあって、内部に収容したスクリーンを清掃するときに、スクリーン収容部の蓋を開閉するための開閉装置に関する。
【０００２】
【従来の技術】
前記ストレーナーは、水を濾過して、例えば、土砂や金属屑のような、水中の異物を除去するので、異物が入ったスクリーンを取り出して清掃する必要があり、このような清掃作業の度ごとに、スクリーン収容部の蓋を開閉しなければならない。
【０００３】
大口径の配管に用いられるストレーナーにおいては、一般にスクリーン収容部の蓋の開閉を簡単にするために蝶番が設けられていて、その蝶番の回転軸を中心に蓋を回転して蓋を開け、また、該回転軸を中心に蓋を逆回転して蓋を閉じている。
【０００４】
この蓋の開閉作業では、スクリーン収容部の蓋が、例えば２５０Aの場合には直径０．４m、重さ３０kg程度以上と大きくて重いので、従来、二人一組で開閉しており、一人が蓋を押さえながら、もう一人が蓋を締め付けているボルトを外してから、二人で蓋を開け、更に、清掃作業が終了すると、二人で蓋を持ち上げて蓋を閉じ、一人がその蓋を押さえて、もう一人がその蓋をスクリーン収容部にボルトで締着していた。
【０００５】
しかし、そのようなストレーナーにおいては、蓋が重いので、力の強い作業員に担当させなければならない不都合がある。
【０００６】
【発明が解決しようとする課題】
本発明は、作業員が一人ですみ、また、あまり力をかけずにスクリーン収容部の蓋を開閉できる開閉装置を提供することを課題とする。
【０００７】
【課題を解決するための手段】
本発明は、上記の課題を解決するものであって、その手段は、請求項１に記載のとおり、斜め下向き又は下向きの開口をもつスクリーン収容部に、該開口を開閉する蓋を、蓋の下端側で蝶着したストレーナーにおいて、引張ワイヤの一端を結着するワイヤ結着部材をスクリーン収容部の蓋の上半部の外面に取り付け、スクリーン収容部に続く配管結合部であって、スクリーン収容部の開口側にある配管結合部に滑車を取り付け、該滑車に前記引張ワイヤを掛け、該引張ワイヤの他端を停止機構付きのワイヤ巻回装置に巻付け、該ワイヤ巻回装置は滑車を挟んでストレーナーとは反対側で、かつ滑車よりも下方に配置したことを特徴とするストレーナーのスクリーン収容部の蓋の開閉装置である。
【０００８】
この装置においては、先ず、蓋を締め付けているボルトを外すとき、蓋が斜め下向き又は下向きの開口をもつスクリーン収容部を閉じているので、蓋が自重により勝手に開かないようにするために、ワイヤ巻回装置の停止機構を作動させておいてから前記ボルトを外す。次いで、停止機構を解除してワイヤ巻回装置を操作して、引張ワイヤを送り出す。
【０００９】
この引張ワイヤの送り出しにしたがって、蓋は、自重により、その下端側の蝶番の回転軸を中心に回転して開く。
【００１０】
内部のスクリーンを取り出し清掃して、それをスクリーン収容部に戻した後、ワイヤ巻回装置を操作して引張ワイヤを巻き取ると、配管結合部に取り付けた滑車に案内されて引張ワイヤが移動して、蓋の上半部の外面に取り付けたワイヤ結着部材を引っ張るので、蓋がその下端側の蝶番の回転軸を中心に逆回転して、蓋が閉じる。
【００１１】
その蓋が閉じた状態で、蓋が元に戻らないようにワイヤ巻回装置の停止機構を作動させて、蓋をボルト締めする。
【００１２】
また、別の手段は、請求項２に記載のとおり、請求項１に記載のストレーナーのスクリーン収容部の蓋の開閉装置において、ワイヤ結着部材を棒状に形成して蓋の外面から突出させ、その先端に引張ワイヤを結着するワイヤ結着部を設けたことを特徴とするストレーナーのスクリーン収容部の蓋の開閉装置である。
【００１３】
この蓋の開閉装置においては、ワイヤ巻回装置を操作して引張ワイヤを巻き取ると、蓋の外面から突出した棒状のワイヤ結着部材が引っ張り上げられ、それによって、蓋が蝶番の回転軸を中心に回転して、蓋の上端が滑車近傍を通過してもワイヤ結着部材が滑車と干渉せずに蓋が閉じられる。
【００１４】
更に、別の手段は、請求項３に記載のとおり、請求項１に記載のストレーナーのスクリーン収容部の蓋の開閉装置において、滑車をストレーナーの中心から側方に寄せて配管結合部に取り付け、スクリーン収容部の蓋の外周側面で滑車のほぼ真下に、引張ワイヤを結着するワイヤ結着部を設けたことを特徴とするストレーナーのスクリーン収容部の蓋の開閉装置である。
【００１５】
この蓋の開閉装置においては、滑車をストレーナーの中心から側方に延出するように配管結合部に取り付け、ワイヤ結着部材を蓋の上半部の外周側面に設けたので、スクリーン収容部の蓋を開閉するときに、引張ワイヤが蓋の周縁と干渉することなく蓋が開閉できる。
【００１６】
他の手段は、請求項４に記載のとおり、斜め下向き又は下向きの開口をもつスクリーン収容部に、該開口を開閉する蓋を、蓋の下端側で蝶着したストレーナーにおいて、引張ワイヤの一端を結着するためのワイヤ結着部を棒状のワイヤ結着部材の先端に設け、該ワイヤ結着部材はスクリーン収容部の蓋から蝶番を挟んで反対側の方向に延出させる一方、蝶番を挟んでスクリーン収容部の開口と反対側に位置する床面付近に、滑車を取り付けて該滑車に前記引張ワイヤを掛け、該引張ワイヤの他端を停止機構付きのワイヤ巻回装置に巻付け、該ワイヤ巻回装置は滑車を挟んでストレーナと反対側に位置する床面付近に取り付けたことを特徴とするストレーナーのスクリーン収容部の蓋の開閉装置である。
【００１７】
この蓋の開閉装置は、ワイヤ巻回装置や滑車を高所に設けることができない場合に用いられるものであり、この蓋を開くためには、蓋が自重により勝手に開かないようワイヤ巻回装置の停止機構を作動させておいてから蓋を止めているボルトを外す。
【００１８】
次いで、停止機構を解除してワイヤ巻回装置を操作し、引張ワイヤを送り出すと、蓋は、自重により下端側の蝶番の回転軸を中心に回転して開く。このとき、蝶番の回転軸に固着した棒状のワイヤ結着部材も、回転して上側の開位置に移動する。
【００１９】
内部のスクリーンを取り出し清掃して、それをスクリーン収容部に戻した後に、ワイヤ巻回装置を操作して引張ワイヤを巻き取ってワイヤ結着部を滑車の近くまで引き下げると蓋が閉じる。その閉じた状態で、停止機構を作動させてワイヤ巻回装置を停止してから、蓋をボルト締めする。
【００２０】
【発明の実施の形態】
図１で、１は、ストレーナーであり、ストレーナー１は、流入口１ａと流出口１ｂと、それらの中間のスクリーン収容部１ｃを有し、該スクリーン収容部１ｃに内蔵する濾過用のスクリーン１ｄにより水を濾過して水に含まれた異物を除去する。
【００２１】
図１は、ストレーナー１のスクリーン収容部１ｃの蓋２に本発明の開閉装置３を設けた装置の側面図である。
【００２２】
このストレーナー１は、例えば、図１に示すように、斜め下向きの開口１Ａを設けたスクリーン収容部１ｃに、該開口１Ａを開閉する蓋２を、蓋の下端側で蝶着したＹ形ストレーナーであるが、これに限らず、例えば、スクリーン収容部に下向きの開口を設け、該スクリーン収容部の底部に前記開口を開閉する蓋を蝶着する形式のＵ形ストレーナーの場合にも、本発明の蓋の開閉装置３は使用できる。蓋２は、回転軸２ｃを中心に回転する蝶番２ａを下端側に有する。
【００２３】
開閉装置３は、図１に示すように、ワイヤ結着部材４を蓋２の上半部の外面に取り付け、そのワイヤ結着部材４の先端のワイヤ結着部４ａに引張ワイヤ５の一端５ａを結着し、また、滑車６を、図１に示すように、スクリーン収容部１ｃに続く配管結合部ａに、滑車取付部材６ａを介して取り付け、その滑車６に引張ワイヤ５を掛け、更に、引張ワイヤ５の他端５ｂを停止機構付きのワイヤ巻回装置７に巻付けるようにする。
【００２４】
ワイヤ結着部材４は、図２に示すように、棒状部４ｂの基端部に雄ねじ４ｃを形成し、先端部にねじ穴４ｄを設けて、そこにリング状のワイヤ結着部４ａを螺着する。
【００２５】
大口径の配管に用いられるストレーナーにおいては、一般に、スクリーン収容部１ｃの蓋２の外面に水抜き用に複数のタッピングを有し、そのうちの一つを水抜きに用い、他の不使用のタッピングについては閉鎖している。ワイヤ結着部材４は、図１に示すように、蓋の上半部の使用していないタッピング２ｂに、前記雄ねじ４ｃを螺着することによって、蓋２の外面から突出するように蓋２に取り付けられる。
【００２６】
ワイヤ巻回装置７は、例えば、手動式のウィンチのような、引張ワイヤ５を巻き取ったり、送り出したりする装置であり、引張ワイヤ５の過度の送出を阻止するためのブレーキ機構のような停止機構を有する。手動式のウィンチを用いる場合、適当なギア比を選定して巻き取りのときの労力を軽減する。
【００２７】
また、図１に示すように、床面からある程度の高さを有してストレーナー１が設置されている場合、作業員が立ったままで作業できるように、配管を支持する架台８に取り付け台８ａを設けて、その取り付け台８ａ上にワイヤ巻回装置７を固定する。
【００２８】
この本発明の蓋の開閉装置３を使用して蓋２を開くには、先ず、蓋２を締め付けているボルトを外す必要があるが、蓋２が斜め下向きに取り付けられているので、自重により勝手に開かないようにするために、ワイヤ巻回装置７の停止機構を作動させておいてから、前記ボルトを外す。次いで、停止機構を解除してワイヤ巻回装置７を操作して、引張ワイヤ５を送り出す。
【００２９】
蓋２は、その引張ワイヤ５の送り出しにしたがって、自重により下端側の蝶番２ａの回転軸２ｃを中心に回転して、図１に実線で示すように開く。
【００３０】
必要があれば、引張ワイヤ５を更に緩めて、スクリーン１ｄをスクリーン収容部１ｃから取り出して清掃した後にスクリーン１ｄを収容部１ｃに戻してから、ワイヤ巻回装置７を操作して、引張ワイヤ５を巻き取ると、引張ワイヤ５が滑車６に案内されて移動し、ワイヤ結着部材４を介して蓋２を引っ張り上げるので、蓋２は下端側の蝶番の回転軸２ｃを中心にして逆回転する。
【００３１】
そして、引張ワイヤ５によってワイヤ結着部材４の先端のワイヤ結着部４ａが滑車６の近くまで引っ張り上げられると、図１に鎖線で示すように、蓋２が閉じる。その閉じた状態で、蓋２が元に戻らないようにワイヤ巻回装置７の停止機構を作動させてから、蓋２をボルト締めする。
【００３２】
この実施の形態では、ワイヤ結着部材４を引張ワイヤ５で引っ張ってワイヤ結着部４ａを滑車６に近くまで引っ張り上げると蓋２が閉じるので、ワイヤ結着部材４によって閉鎖力を充分に作用させることができ、また、蓋２の上端が滑車６の近傍を通過する構造のものであっても蓋２と滑車６が干渉することもない。
【００３３】
このような蓋の開閉装置３とは別の実施の形態として、図３と図４に示すようなストレーナーのスクリーン収容部の蓋の開閉装置３ａがある。この蓋の開閉装置３ａは、滑車６が配管結合部ａに取り付けられたときに、滑車６が蓋２の上端と干渉してしまうほど配管結合部ａと蓋２の上端が近接している場合に、その干渉を避け、かつ、蓋２の外面にワイヤ結着部材４を設けたくない場合に用いられる。
【００３４】
この蓋の開閉装置３ａは、図４に示すように、スクリーン収容部１ｃの蓋２の上半部の外周側面２ｄにねじ穴２ｅを開けて、該ねじ穴２ｅに、図２におけるワイヤ結着部材４から取り外したワイヤ結着部４ａを、直接螺着したことと、図３及び図４に示すように、滑車６がストレーナーの中心から側方に延出するように、滑車６を、滑車取付部材６ａを用いて、配管結合部ａに取り付けたことを除いて、前記ストレーナーのスクリーン収容部の蓋の開閉装置３と同様である。この実施の形態は、蓋の外面にワイヤ結着部材を突出させたくない場合に用いる。
【００３５】
蓋の開閉装置３ａを使用してスクリーン収容部１ｃの蓋２を開くには、先ず、蓋２が、自重により勝手に開かないように、ワイヤ巻回装置７の停止機構を作動させておいてから、蓋２を締め付けているボルトを外す。次いで、停止機構を解除して、ワイヤ巻回装置７を操作して、引張ワイヤ５を送り出す。
【００３６】
その引張ワイヤ５の送り出しにしたがって、蓋２は、自重により、蝶番２ａの回転軸２ｃを中心に回転して、図３に実線で示すように開く。
【００３７】
必要があれば、引張ワイヤ５を更に緩めて、スクリーン１ｄをスクリーン収容部１ｃから取り出して清掃した後にスクリーン１ｄを収容部１ｃに戻してから、ワイヤ巻回装置７を操作して、引張ワイヤ５を巻き取ると、ストレーナー１の中心から側方に延出した滑車６に案内されて引張ワイヤ５が移動し、蓋２の外周側面２ｄに螺着されたワイヤ結着部４ａを介して蓋２を引っ張り上げるので、蓋２は蝶番２ａの回転軸２ｃを中心にして逆回転する。
【００３８】
そして、引張ワイヤ５によって蓋２に取り付けたワイヤ結着部４ａが滑車６の近くまで引っ張り上げられると、図３に鎖線で示すように、蓋２が閉じる。そして、蓋２を閉じた状態で、蓋２が元に戻らないようにワイヤ巻回装置７の停止機構を作動させておいて、蓋２をボルト締めする。
【００３９】
また、上記のストレーナーのスクリーン収容部の蓋の開閉装置３、３ａとは、更に別の実施の形態として、図５及び図６に示すようなストレーナーのスクリーン収容部の蓋の開閉装置３ｂがある。この開閉装置３ｂは、滑車６とワイヤ巻回装置７を高所に設けることができない場合に用いられる。
【００４０】
図５及び図６に示されたストレーナーは、斜め下向きの開口１Ａを設けたスクリーン収容部１ｃに、該開口１Ａを開閉する蓋２を、蓋の下端側で蝶着しているＹ形ストレーナーであるが、スクリーン収容部に下向きの開口を設け、該スクリーン収容部の底部に前記開口を開閉する蓋を蝶着する形式のＵ形ストレーナーの場合にも、本発明の蓋の開閉装置３ｂは使用できる。
【００４１】
この開閉装置３ｂは、図５及び図６に示すように、蓋２の下端部に設けられた蝶番２ａの回転軸２ｃの一端に溶接された鋼板９に棒状のワイヤ結着部材４をレバーとして溶接して、棒状のワイヤ結着部材４を鋼板９から蓋２とは反対の方向に延出させ、棒状のワイヤ結着部材４の先端にワイヤ結着部４ａを設けて、該ワイヤ結着部４ａに引張ワイヤ５の一端５ａを結着し、また、滑車６を床面付近に取り付け、その滑車６に引張ワイヤ５を掛け、更に、引張ワイヤ５の他端５ｂを床面付近に取り付けた停止機構付きのワイヤ巻回装置７に巻付けるようにする。
【００４２】
この蓋の開閉装置３ｂを使用して蓋２を開くには、蓋２を締め付けているボルトを外す前に、蓋２が自重により勝手に開かないようにワイヤ巻回装置７の停止機構を作動させておいてから前記ボルトを外し、次いで、停止機構を解除してワイヤ巻回装置７を操作して、引張ワイヤ５を送り出す。
【００４３】
蓋２は、その引張ワイヤ５の送り出しにしたがって、自重により、蝶番２ａの回転軸２ｃを中心にして回転して、図５に実線で示すように開き、床面に接して回転が停止する。このとき、蝶番の回転軸２ｃに溶接された鋼板９は回転し、該鋼板９に溶接された棒状のワイヤ結着部材４も回転して、図５に実線で示すような上側の位置に移動する。
【００４４】
更に、スクリーン１ｄをスクリーン収容部１ｃから取り出して清掃した後にスクリーン１ｄを収容部１ｃに戻してから、ワイヤ巻回装置７を操作して、引張ワイヤ５を巻き取って、ワイヤ結着部４ａを滑車６の近くにまで引き下げると、図５に鎖線で示すように、蓋２が閉じる。この閉じた状態で、蓋２が元に戻らないようにワイヤ巻回装置７の停止機構を作動させておいて、蓋２をボルト締めする。
【００４５】
この実施の形態では、引張ワイヤの一端を結着した棒状のワイヤ結着部材４が蓋と反対側の方向に延出し、滑車６と引張ワイヤ５はスクリーン収容部１ｃの開口１Ａ側には存在しないから、スクリーン収容部１ｃからスクリーン１ｄを取り出して清掃するときには、引張ワイヤ５に邪魔されずに開口１Ａからスクリーン１ｄを容易に取り出せる。
【００４６】
【発明の効果】
請求項１に記載の本発明は、斜め下向き又は下向きの開口をもつスクリーン収容部に蝶着された蓋の締め付けボルトを、ワイヤ巻回装置の停止機構を作動させておいて外し、次いで、停止機構を解除してワイヤ巻回装置により引張ワイヤを送り出すにしたがって、蓋が、自重により、蝶番の回転軸を中心に回転して開き、スクリーンの清掃後には、ワイヤ巻回装置により引張ワイヤを巻き取ると、蓋が蝶番の回転軸を中心に逆回転して閉じ、その閉じた状態でワイヤ巻回装置の停止機構を作動させておいて、蓋をボルト締めするので、作業員が一人ですみ、また、あまり力をかけずにスクリーン収容部の蓋を開閉できる効果を有する。
【００４７】
また、この発明は、ワイヤ結着部材を引張ワイヤで引っ張って蓋を引っ張り上げて蓋を閉じるので、ワイヤ結着部材により閉鎖力を充分に作用させることができる効果を有する。更に、蓋の上端が滑車の近傍を通過する構造のストレーナーであっても、蓋と滑車が干渉することはない。
【００４８】
請求項２に記載の本発明は、ワイヤ巻回装置によって引張ワイヤを巻き取ると、蓋の外面から突出した棒状のワイヤ結着部材が引張ワイヤによって引っ張られて、ワイヤ結着部が滑車の近くまでに引っ張り上げられると蓋が閉じるので、棒状のワイヤ結着部材の長さを利用して蓋を閉じることができる効果を有する。
【００４９】
請求項３に記載の本発明は、滑車をストレーナーの中心から側方に延出するように配管結合部に取り付け、ワイヤ結着部材をスクリーン収容部の蓋の上半部の外周側面に設けたので、滑車が蓋の上端と干渉してしまうほど、配管結合部と蓋の上端が近接している場合にも、スクリーン収容部の蓋を開閉できる効果を有する。
【００５０】
請求項４に記載の本発明は、引張ワイヤの一端を結着した棒状のワイヤ結着部材を蓋と反対側の方向に延出させ、床面付近に取り付けられた滑車にその引張ワイヤを掛けるので、引っ張りワイヤはスクリーン収容部の開口側に存在せず、スクリーンを取り出して清掃するときに、引張ワイヤに邪魔されずに、スクリーン収容部の開口からスクリーンを容易に取り出すことができる効果を有する。
【図面の簡単な説明】
【図１】本発明のストレーナーのスクリーン収容部の蓋の開閉装置を用いたＹ形ストレーナーの一部欠載側面図。
【図２】ワイヤ結着部材の側面図。
【図３】本発明の別の実施の形態のストレーナーのスクリーン収容部の蓋の開閉装置を用いたＹ形ストレーナーの一部欠載側面図。
【図４】図３のＩＶ−ＩＶ線矢示図。
【図５】本発明の更に別の実施の形態のストレーナーのスクリーン収容部の蓋の開閉装置を用いたＹ形ストレーナーの一部欠載側面図。
【図６】図５のＶＩ−ＶＩ線矢示図。
【符号の説明】
１ストレーナー１Ａ開口
１ｃスクリーン収容部２スクリーン収容部の蓋
２ａ蝶番２ｃ蝶番の回転軸２ｄ蓋の外周側面
３、３ａ、３ｂストレーナーのスクリーン収容部の蓋の開閉装置
４ワイヤ結着部材５引張ワイヤ
６滑車７停止機構付きのワイヤ巻回装置
ａ配管結合部[0001]
BACKGROUND OF THE INVENTION
The present invention is a strainer installed in the middle of a large-diameter pipe for cold / warm water or cooling water used for district heating / cooling, etc., and when the screen accommodated therein is cleaned, the lid of the screen accommodating portion is The present invention relates to an opening / closing device for opening and closing.
[0002]
[Prior art]
The strainer filters water and removes foreign matter such as earth and sand and metal scraps, so it is necessary to take out and clean the screen containing foreign matter. In addition, the lid of the screen housing part must be opened and closed.
[0003]
In strainers used for large-diameter pipes, a hinge is generally provided to simplify the opening and closing of the lid of the screen housing, and the lid is opened by rotating the lid around the hinge's axis of rotation. The lid is reversely rotated about the rotation axis to close the lid.
[0004]
In this lid opening / closing operation, for example, in the case of 250A, the lid of the screen is large and heavy with a diameter of 0.4 m and a weight of about 30 kg or more. While holding the lid, remove the bolt that the other person is tightening the lid, open the lid by two people, and when the cleaning work is finished, lift the lid by two people and close the lid. The other person was holding the lid on the screen housing with bolts.
[0005]
However, in such a strainer, since the lid is heavy, there is an inconvenience that a strong worker must be in charge.
[0006]
[Problems to be solved by the invention]
It is an object of the present invention to provide an opening / closing device that can be opened and closed by a single worker and that can open and close the lid of the screen housing portion without applying too much force.
[0007]
[Means for Solving the Problems]
The present invention solves the above-mentioned problems, and the means is as defined in claim 1, wherein a lid for opening and closing the opening is provided in a screen housing portion having an opening that is obliquely downward or downward. in strainer was hinged at the lower end side, a wire binding member for binding the one end of the pull wire attached to the outer surface of the top half of the lid of the screen housing portion, a pipe coupling portion that follows the screen housing portion, the screen housing Attach a pulley to the pipe joint on the opening side of the section , hang the tension wire around the pulley, wind the other end of the tension wire around a wire winding device with a stop mechanism , and the wire winding device An opening / closing device for the lid of the screen accommodating portion of the strainer, which is disposed on the opposite side to the strainer and sandwiched below the pulley .
[0008]
In this device, first, when removing the bolts tightening the lid, the lid closes the screen housing portion having an opening that is obliquely downward or downward, so that the lid does not open by its own weight. The bolt is removed after the stop mechanism of the wire winding device is activated. Next, the stopping mechanism is released and the wire winding device is operated to feed out the pulling wire.
[0009]
As the tension wire is fed out, the lid is rotated by its own weight and rotated around the rotation axis of the hinge on the lower end side.
[0010]
After taking out the internal screen, cleaning it, returning it to the screen housing, and operating the wire winding device to wind the tension wire, the tension wire is guided by the pulley attached to the pipe joint. Then, since the wire binding member attached to the outer surface of the upper half of the lid is pulled, the lid rotates in the reverse direction about the rotation axis of the hinge on the lower end side, and the lid is closed.
[0011]
With the lid closed, the stop mechanism of the wire winding device is operated so that the lid does not return to the original position, and the lid is bolted.
[0012]
According to another aspect of the present invention, in the lid opening / closing device of the screen accommodating portion of the strainer according to claim 1, the wire binding member is formed in a rod shape and protrudes from the outer surface of the lid. An opening / closing device for a lid of a screen accommodating portion of a strainer, characterized in that a wire binding portion for binding a tension wire is provided at the tip thereof.
[0013]
In this lid opening and closing device, when the wire winding device is operated to wind the tension wire, the rod-shaped wire binding member protruding from the outer surface of the lid is pulled up, whereby the lid rotates the rotation axis of the hinge. Even if the upper end of the lid rotates in the center and passes near the pulley, the wire binding member does not interfere with the pulley and the lid is closed.
[0014]
Further, as described in claim 3, another means is the lid opening / closing device of the screen accommodating portion of the strainer according to claim 1, wherein the pulley is moved to the side from the center of the strainer and attached to the pipe coupling portion , scan almost directly below the pulley outside peripheral side surface of the lid clean housing part, it is the provision of the wire binding section for binding a pull wire opening and closing device for lids of the screen housing portion of the strainer, characterized in.
[0015]
In this lid opening / closing device, the pulley is attached to the pipe coupling portion so as to extend laterally from the center of the strainer, and the wire binding member is provided on the outer peripheral side surface of the upper half of the lid. When opening and closing the lid, the lid can be opened and closed without the tension wire interfering with the periphery of the lid.
[0016]
According to a fourth aspect of the present invention, in the strainer in which the lid for opening and closing the opening is attached to the screen accommodating portion having the obliquely downward or downward opening, the one end of the tension wire is attached to the lower end side of the lid. while providing a wire binding section for binding wear on the tip of the rod-shaped wire binding element, the wire binder member that Ru is extended in the direction of the opposite side of the hinge from the lid of the screen housing portion, a hinge A pulley is attached near the floor located opposite to the opening of the screen housing portion across the screen, the tension wire is hung on the pulley, and the other end of the tension wire is wound around a wire winding device with a stop mechanism. The wire winding device is an opening / closing device for the lid of the screen accommodating portion of the strainer, which is attached to the vicinity of the floor located on the opposite side of the strainer with the pulley interposed therebetween .
[0017]
The lid opening / closing device is used when a wire winding device or pulley cannot be provided at a high place. To open the lid, the wire winding device prevents the lid from being opened by its own weight. Remove the bolt that holds the lid after operating the stop mechanism.
[0018]
Next, when the stop mechanism is released, the wire winding device is operated, and the pulling wire is fed out, the lid is opened by rotating around the rotation axis of the hinge on the lower end side by its own weight. At this time, the rod-shaped wire binding member fixed to the rotation shaft of the hinge also rotates and moves to the upper open position.
[0019]
After the internal screen is taken out and cleaned and returned to the screen accommodating portion, the lid is closed when the wire winding device is operated to wind up the pulling wire and pull the wire binding portion close to the pulley. In the closed state, the stop mechanism is operated to stop the wire winding device, and then the lid is bolted.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 1, 1 is a strainer, and the strainer 1 has an inflow port 1a, an outflow port 1b, and a screen accommodating portion 1c between them, and a filtering screen 1d built in the screen accommodating portion 1c. The water is filtered to remove foreign matters contained in the water.
[0021]
FIG. 1 is a side view of an apparatus in which the lid 2 of the screen accommodating portion 1c of the strainer 1 is provided with the opening / closing device 3 of the present invention.
[0022]
For example, as shown in FIG. 1, the strainer 1 is a Y-shaped strainer in which a lid 2 for opening and closing the opening 1A is hinged to a screen accommodating portion 1c provided with an obliquely downward opening 1A on the lower end side of the lid. However, the present invention is not limited to this. For example, in the case of a U-shaped strainer of a type in which a downward opening is provided in a screen housing portion and a lid that opens and closes the opening is hinged at the bottom of the screen housing portion. The lid opening / closing device 3 can be used. The lid 2 has a hinge 2a that rotates about the rotation shaft 2c on the lower end side.
[0023]
As shown in FIG. 1, the opening / closing device 3 attaches the wire binding member 4 to the outer surface of the upper half of the lid 2, and attaches one end 5 a of the tension wire 5 to the wire binding portion 4 a at the tip of the wire binding member 4. Further, as shown in FIG. 1, the pulley 6 is attached to the pipe coupling portion a following the screen accommodating portion 1c via the pulley attachment member 6a, and the pull wire 5 is hung on the pulley 6. The other end 5b of the pulling wire 5 is wound around the wire winding device 7 with a stop mechanism.
[0024]
As shown in FIG. 2, the wire binding member 4 is formed with a male screw 4c at the base end portion of the rod-like portion 4b, a screw hole 4d at the tip portion, and a ring-shaped wire binding portion 4a screwed there. To wear.
[0025]
In a strainer used for large-diameter piping, generally, the outer surface of the lid 2 of the screen accommodating portion 1c has a plurality of tappings for draining, one of which is used for draining, and the other unused tapping. Is closed. As shown in FIG. 1, the wire binding member 4 is attached to the lid 2 so as to protrude from the outer surface of the lid 2 by screwing the male screw 4 c onto the unused tapping 2 b of the upper half of the lid. It is attached.
[0026]
The wire winding device 7 is a device that winds or feeds the tension wire 5 such as a manual winch, and is stopped like a brake mechanism for preventing excessive delivery of the tension wire 5. It has a mechanism. When using a manual winch, select an appropriate gear ratio to reduce the labor during winding.
[0027]
Further, as shown in FIG. 1, when the strainer 1 is installed with a certain height from the floor surface, the mounting base 8a is attached to the base 8 that supports the piping so that the worker can work while standing. And the wire winding device 7 is fixed on the mounting base 8a.
[0028]
In order to open the lid 2 using the lid opening / closing device 3 of the present invention, it is necessary to first remove the bolts that are tightening the lid 2, but since the lid 2 is attached obliquely downward, In order to prevent it from being opened without permission, the bolt is removed after the stop mechanism of the wire winding device 7 is operated. Next, the stopping mechanism is released, the wire winding device 7 is operated, and the pulling wire 5 is sent out.
[0029]
The lid 2 rotates about its rotation axis 2c of the hinge 2a on the lower end side by its own weight according to the feeding of the pulling wire 5, and opens as shown by a solid line in FIG.
[0030]
If necessary, the tension wire 5 is further loosened, the screen 1d is taken out from the screen housing portion 1c and cleaned, and then the screen 1d is returned to the housing portion 1c, and then the wire winding device 7 is operated to operate the tension wire 5 Is pulled, the pulling wire 5 is guided and moved by the pulley 6, and the lid 2 is pulled up via the wire binding member 4, so that the lid 2 rotates in the reverse direction about the rotation shaft 2c of the hinge on the lower end side. To do.
[0031]
When the wire binding portion 4a at the tip of the wire binding member 4 is pulled up to the vicinity of the pulley 6 by the tension wire 5, the lid 2 is closed as shown by a chain line in FIG. In the closed state, the lid 2 is bolted after the stop mechanism of the wire winding device 7 is operated so that the lid 2 does not return to its original state.
[0032]
In this embodiment, when the wire binding member 4 is pulled by the pulling wire 5 and the wire binding portion 4a is pulled up close to the pulley 6, the lid 2 is closed, so that the wire binding member 4 sufficiently applies the closing force. Moreover, even if the upper end of the lid 2 passes through the vicinity of the pulley 6, the lid 2 and the pulley 6 do not interfere with each other.
[0033]
As an embodiment different from such a lid opening / closing device 3, there is a lid opening / closing device 3a of the screen accommodating portion of the strainer as shown in FIGS. When the pulley 6 is attached to the pipe coupling portion a, the lid opening / closing device 3a is such that the pipe coupling portion a and the upper end of the lid 2 are so close that the pulley 6 interferes with the upper end of the lid 2. In addition, it is used when the interference is avoided and the wire binding member 4 is not desired to be provided on the outer surface of the lid 2.
[0034]
As shown in FIG. 4, the lid opening / closing device 3a has a screw hole 2e formed in the outer peripheral side surface 2d of the upper half of the lid 2 of the screen accommodating portion 1c, and the wire binding shown in FIG. The wire binding portion 4a removed from the member 4 is screwed directly, and as shown in FIGS. 3 and 4, the pulley 6 is moved to the side so that the pulley 6 extends laterally from the center of the strainer. It is the same as the opening / closing device 3 for the lid of the screen accommodating portion of the strainer except that the attachment member 6a is used to attach to the pipe coupling portion a. This embodiment is used when it is not desired to project the wire binding member on the outer surface of the lid.
[0035]
In order to open the lid 2 of the screen accommodating portion 1c using the lid opening / closing device 3a, first, the stop mechanism of the wire winding device 7 is operated so that the lid 2 does not open by its own weight. Then remove the bolts that fasten the lid 2. Next, the stopping mechanism is released, the wire winding device 7 is operated, and the tension wire 5 is sent out.
[0036]
According to the feeding of the pulling wire 5, the lid 2 rotates about the rotation shaft 2c of the hinge 2a by its own weight and opens as shown by a solid line in FIG.
[0037]
If necessary, the tension wire 5 is further loosened, the screen 1d is taken out from the screen housing portion 1c and cleaned, and then the screen 1d is returned to the housing portion 1c, and then the wire winding device 7 is operated to operate the tension wire 5 Is pulled by the pulley 6 extending laterally from the center of the strainer 1 to move the pulling wire 5 and the lid 2 via the wire binding portion 4a screwed to the outer peripheral side surface 2d of the lid 2. The lid 2 rotates in the reverse direction about the rotation axis 2c of the hinge 2a.
[0038]
And if the wire binding part 4a attached to the lid | cover 2 with the pulling wire 5 is pulled up to the vicinity of the pulley 6, the lid | cover 2 will close, as shown with a dashed line in FIG. Then, with the lid 2 closed, the stop mechanism of the wire winding device 7 is operated so that the lid 2 does not return to its original position, and the lid 2 is bolted.
[0039]
Further, the lid opening / closing device 3, 3a of the screen accommodating portion of the strainer described above includes, as another embodiment, a lid opening / closing device 3b of the screen accommodating portion of the strainer as shown in FIGS. . The opening / closing device 3b is used when the pulley 6 and the wire winding device 7 cannot be provided at a high place.
[0040]
The strainer shown in FIGS. 5 and 6 is a Y-shaped strainer in which a lid 2 for opening and closing the opening 1A is hinged to a screen accommodating portion 1c provided with an obliquely downward opening 1A on the lower end side of the lid. However, the lid opening / closing device 3b of the present invention is also used in the case of a U-shaped strainer of the type in which a downward opening is provided in the screen accommodating portion and a lid for opening and closing the opening is hinged at the bottom of the screen accommodating portion. it can.
[0041]
As shown in FIGS. 5 and 6, the opening / closing device 3b has a rod-shaped wire binding member 4 as a lever on a steel plate 9 welded to one end of a rotating shaft 2c of a hinge 2a provided at the lower end of the lid 2. By welding, the rod-shaped wire binding member 4 is extended from the steel plate 9 in the direction opposite to the lid 2, and a wire binding portion 4 a is provided at the tip of the rod-shaped wire binding member 4. One end 5a of the tension wire 5 is bound to the portion 4a, the pulley 6 is attached to the vicinity of the floor, the tension wire 5 is hung on the pulley 6, and the other end 5b of the tension wire 5 is attached to the vicinity of the floor. It winds around the wire winding device 7 with a stop mechanism.
[0042]
In order to open the lid 2 using the lid opening / closing device 3b, before removing the bolt tightening the lid 2, the stop mechanism of the wire winding device 7 is operated so that the lid 2 does not open by its own weight. Then, the bolt is removed, and then the stopping mechanism is released and the wire winding device 7 is operated to feed out the tension wire 5.
[0043]
The lid 2 rotates around its rotation axis 2c of the hinge 2a by its own weight according to the feeding of the pulling wire 5, opens as shown by the solid line in FIG. 5, and stops rotating in contact with the floor surface. At this time, the steel plate 9 welded to the rotating shaft 2c of the hinge rotates, and the rod-shaped wire binding member 4 welded to the steel plate 9 also rotates and moves to the upper position as shown by the solid line in FIG. To do.
[0044]
Further, after the screen 1d is taken out from the screen accommodating portion 1c and cleaned, the screen 1d is returned to the accommodating portion 1c, and then the wire winding device 7 is operated to take up the pulling wire 5 and the wire binding portion 4a. When pulled down to the vicinity of the pulley 6, the lid 2 is closed as shown by a chain line in FIG. In this closed state, the stop mechanism of the wire winding device 7 is operated so that the lid 2 does not return to its original position, and the lid 2 is bolted.
[0045]
In this embodiment, a rod-shaped wire binding member 4 having one end of a tension wire bound thereto extends in the direction opposite to the lid, and the pulley 6 and the tension wire 5 are present on the opening 1A side of the screen accommodating portion 1c. Therefore, when the screen 1d is taken out from the screen accommodating portion 1c and cleaned, the screen 1d can be easily taken out from the opening 1A without being obstructed by the pulling wire 5.
[0046]
【The invention's effect】
In the first aspect of the present invention, the fastening bolt of the lid hinged on the screen accommodating portion having the obliquely downward or downward opening is removed by operating the stop mechanism of the wire winding device, and then the stop As the mechanism is released and the tension wire is sent out by the wire winding device, the lid opens by its own weight, rotating around the rotation axis of the hinge, and after cleaning the screen, the wire is wound by the wire winding device. Then, the lid rotates in the reverse direction around the hinge's rotation axis and closes, and in that closed state, the wire winding device stop mechanism is operated and the lid is bolted, so only one worker is required. Moreover, it has the effect that the lid of the screen housing portion can be opened and closed without applying too much force.
[0047]
In addition, since the wire binding member is pulled with a pulling wire and the lid is pulled up to close the lid, the wire binding member has an effect that a closing force can be sufficiently applied. Furthermore, even if the strainer has a structure in which the upper end of the lid passes near the pulley, the lid and the pulley do not interfere with each other.
[0048]
According to the second aspect of the present invention, when the tension wire is wound by the wire winding device, the rod-shaped wire binding member protruding from the outer surface of the lid is pulled by the tension wire, and the wire binding portion is near the pulley. Since the lid is closed when pulled up to this point, the lid can be closed using the length of the rod-shaped wire binding member.
[0049]
In the third aspect of the present invention, the pulley is attached to the pipe coupling portion so as to extend laterally from the center of the strainer, and the wire binding member is provided on the outer peripheral side surface of the upper half of the lid of the screen accommodating portion. Therefore, it has an effect that the lid of the screen housing portion can be opened and closed even when the pipe coupling portion and the upper end of the lid are close to each other so that the pulley interferes with the upper end of the lid.
[0050]
According to the fourth aspect of the present invention, a rod-like wire binding member having one end of a tension wire bound thereto is extended in the direction opposite to the lid, and the tension wire is hung on a pulley attached near the floor surface. Therefore, the pulling wire does not exist on the opening side of the screen housing portion, and when the screen is taken out and cleaned, the screen can be easily taken out from the opening of the screen housing portion without being obstructed by the pulling wire. .
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view of a Y-type strainer using a lid opening / closing device for a screen accommodating portion of the strainer of the present invention.
FIG. 2 is a side view of a wire binding member.
FIG. 3 is a partially cutaway side view of a Y-type strainer using a lid opening / closing device of a screen accommodating portion of a strainer according to another embodiment of the present invention.
4 is a view taken along the line IV-IV in FIG. 3;
FIG. 5 is a partially cut-away side view of a Y-type strainer using a lid opening / closing device of a screen accommodating portion of a strainer according to still another embodiment of the present invention.
6 is a view taken along line VI-VI in FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Strainer 1A Opening 1c Screen accommodating part 2 Screen accommodating part lid 2a Hinge 2c Hinge rotation axis 2d Lid outer peripheral side surface 3, 3a, 3b Opening / closing device 4 of strainer screen accommodating part 4 Wire binding member 5 Tension wire 6 Pulley 7 Wire winding device with stop mechanism a Piping joint

Claims

In a strainer in which a lid for opening and closing the opening is hinged to the screen housing portion having an obliquely downward or downward opening on the lower end side of the lid, a wire binding member for binding one end of the tension wire is attached to the screen housing portion. A pipe coupling part that is attached to the outer surface of the upper half of the screen and that follows the screen housing part. A pulley is attached to the pipe coupling part on the opening side of the screen housing part, and the tension wire is hung on the pulley, The other end is wound around a wire winding device with a stop mechanism , and the wire winding device is disposed on the side opposite to the strainer across the pulley and below the pulley. Lid opening and closing device.

The lid opening / closing device for the screen accommodating portion of the strainer according to claim 1, wherein the wire binding member is formed in a rod shape to protrude from the outer surface of the lid, and a wire binding portion for binding a tensile wire is provided at the tip of the wire binding member. A device for opening and closing the lid of the screen accommodating portion of the strainer.

In switchgear lid of the screen housing portion of the strainer according to claim 1, Intention the pulley from the center of the strainer laterally attached to the pipe coupling portion, substantially below the pulley outside peripheral side surface of the lid of the scan clean housing part And a lid opening / closing device for the screen accommodating portion of the strainer, wherein a wire binding portion for binding the tension wire is provided.

The screen housing portion having a obliquely downward or downward opening, a lid for opening and closing the opening, in strainer and hinged at the lower end of the lid, pulling a wire binding section for binding the one end of the wire rod shaped provided at the tip of the wire binding element, one said wire binding member which Ru is extended in the direction of the opposite side of the hinge from the lid of the screen housing portion, located opposite the opening of the screen housing portion across a hinge A pulley is attached near the floor surface, the tension wire is hung on the pulley, and the other end of the tension wire is wound around a wire winding device with a stop mechanism. The wire winding device sandwiches the pulley with a strainer. An opening / closing device for a lid of a screen accommodating portion of a strainer, which is attached near the floor located on the opposite side .