JP3970482B2 - Liquid filter device - Google Patents

Description

【０００１】
【産業上の技術分野】
本発明は第１流路から第２流路に流れる液体を濾過させる液体用フィルタ装置に係わり、特に、第１流路と第２流路との間の連通路からフィルタ本体を外部操作により容易に且つ液体に触れることなく挿脱することができ、フィルタ本体の洗浄や交換等を効率よく実施することを可能とした液体用フィルタ装置に関する。
【０００２】
【従来の技術】
従来、第１流路である第１タンク室１ａと第２流路である第２タンク室１ｄとの間に介在させて第１流路から第２流路に流れる液体を濾過する各種の液体用フィルタ装置が提案されている。例えば、図７に示すごとき油タンク１内に収容されたオイルフィルタ装置２がある。このオイルフィルタ装置２では、筒状のフィルタ本体３の下端部に断面コ字形をなす環状のフィルタ受座部４を液密的に外嵌すると共に、同フィルタ受座部４にはシール部材５を介して片ボス形をなす環状のフィルタ取付フランジ６のボス部６ａを液密的に嵌着する。前記フィルタ本体３の上端部には凹凸状の端板７が固設されており、同端板７の中央に圧縮バネ８を介装したロッド棒９が立設されている。
【０００３】
この従来のオイルフィルタ装置２によれば、前記第１タンク室１ａに開口１ｂを介して固定されたフィルタケース１ｃの天板部に、前記ロッド棒９に介装された圧縮バネ８の付勢力に抗して同ロッド棒９を挿入させ、前記フィルタ本体３をフィルタケース１ｃ内に挿入させる。前記フィルタ本体３の挿入と同時に、前記第１タンク室１ａの開口１ｂの周壁に前記フィルタ受座部４を当接させると共に、同開口１ｂの周壁近傍に突設された環状のネジ込みブロック１０にシール部材１５を介して前記フィルタ取付フランジ６を当接させ、複数の取付ボルト１１，１１…により締め付けて前記フィルタ本体３を固定している。
【０００４】
かかる構成により、前記タンク１内の作動油は前記第１タンク室１ａから前記フィルタケース１ｃ内のフィルタ本体３を介して濾過されて前記第２タンク室１ｄに流れ込み、同第２タンク室１ｄ内の作動油は配管出口１２を通って図示せぬポンプに吸い込まれるようになっている。
【０００５】
上述のごとく組み立てられたフィルタ本体３を整備点検する場合には、前記第１及び第２タンク室１ａ，１ｄ内の作動油を抜き取った後、先ず、前記第２タンク室１ｄを開閉する開閉部材１４を取り付ける取付ボルト１３，１３…を回動して前記第２タンク室１ｄの開口部１ｅから前記開閉部材１４を取り外す。次いで開放された前記開口部１ｅを介して前記第２タンク室１ｄ内に取外し工具を差し込み、その取外し工具により前記第１タンク室１ａのネジ込みブロック１０に固定されたフィルタ取付フランジ６の複数の取付ボルト１１，１１…を前記ロッド棒９に介装された圧縮バネ８の弾力を減衰させながら徐々に緩める。
【０００６】
そして、最終の取付ボルト１１を取り外した後、前記フィルタ本体３と共に前記フィルタ取付フランジ６及び前記フィルタ受座部４を、前記第１タンク室１ａのフィルタケース１ｃ内から前記第２タンク室１ｄを経て同第２タンク室１ｄの開口部１ｅから一体的に引き出す。取り出したフィルタ本体３の洗浄又は交換等の整備点検後、既述したように前記フィルタ取付フランジ６に前記フィルタ受座部４を介して前記フィルタ本体３等を組み付ける。そして、これらの組立体を上述の作業とは逆の作業手順により前記第１タンク室１ａのフィルタケース１ｃ内に前記フィルタ本体３を取り付ける。
【０００７】
また、上記のごとく構成されたオイルフィルタ装置の他には、例えば実開平５−８８６０９号公報に開示されたオイルフィルタ装置がある。同公報に開示されたオイルフィルタ装置は第１流路である配管の入口と第２流路である配管の出口との間に設けられる。このオイルフィルタ装置は、圧縮バネを介してフィルタ本体を収容した筒状のフィルタケースの筒軸方向両側の開口端面をシール部材を介して蓋体により閉鎖し、同蓋体を複数の締付具により締め付けることにより前記フィルタ本体を前記圧縮バネの弾力に抗して挟圧固定している。一方の蓋体には前記配管入口が設けられていると共に、他方の蓋体には前記配管出口が設けられている。
【０００８】
上記のごとく組み立てられたフィルタ本体を整備点検する際には、先ず複数の締付具を回動させることにより前記フィルタケース及び前記蓋体の固定を緩める。次いで、所定の締付具を取り外したのち前記フィルタケース内に収容されているフィルタ本体やシール部材等と共に前記圧縮バネの付勢力に抗して前記フィルタケースを筒径方向に引き出して前記フィルタ本体を外部に取り出す。
【０００９】
そして、取り出したフィルタ本体の整備点検後、前記フィルタケース内に前記フィルタ本体やシール部材等を収容させた状態で前記圧縮バネの付勢力に抗して前記配管に接続された一対の蓋体の間に前記フィルタケースを筒径方向に押し込む。次いで、取り外した所定の前記締付具を取り付けると共に複数の前記締付具により前記圧縮バネの付勢力に抗して前記フィルタケースを締め付け、同フィルタ本体を各蓋体の間に挟持固定する。
【００１０】
かかる構成によれば、フィルタケースの筒軸方向両側の開口端面と前記蓋体との間にシール部材を介在させているため、オイルフィルタ装置に接続される配管を取り外さずに前記フィルタケースを筒径方向に摺動させることによりフィルタ本体を交換することが可能となり、配管を脱着することにより生じる油洩れを回避することができると共に、フィルタ本体の交換等の作業を容易に実施することができるという利点を有する。
【００１１】
【発明が解決しようとする課題】
ところで、図７に示した上記従来のオイルフィルタ装置によれば、フィルタ本体３を取り外す際には、既述したように第２タンク室１ｄの開口部１ｅを介して第１及び第２タンク室１ａ，１ｄ間の連通路から外部に前記フィルタ本体３を引き出す必要があるため、第２タンクの開口部１ｅを開閉する開閉部材１４の複数の取付ボルト１３，１３…を取り外す作業に加えて第１タンク室１ａのフィルタ取付フランジ６の複数の取付ボルト１１，１１…を取り外す作業等を行わなければならず、脱着すべき部品点数が多く極めて手間がかかり、相当な時間と労力とを必要とする。しかも第１及び第２タンク室１ａ，１ｄの連通路内に手や腕を差し込まなければならないため手や腕が作動油で汚れるという不具合がある。
【００１２】
また、フィルタ本体３を取り付ける場合にあっても、上述のごとくフィルタ本体３の取外し作業とは逆の作業手順で取付作業を行うため、フィルタ本体３の取り外し作業と同様の不具合が生じ、更に第１及び第２タンク室１ａ，１ｄ間の連通路は外部から目視しにくいため、フィルタ本体３をフィルタケース１ｃ内に位置決めしにくいという不具合もある。
【００１３】
一方、上記実開平５−８８６０９号公報に開示されたオイルフィルタ装置では、上述したような作用効果を得るために、複数の締付具を回動させることによりフィルタケース及び蓋体の固定を緩めて所定の締付具を取り外したのちに、前記フィルタケース内に収容されているフィルタ本体やシール部材等と共に圧縮バネの付勢力に抗して前記フィルタケースを筒径方向に引き出すため、同フィルタケースを引き出すときに前記フィルタ本体が前記圧縮バネの付勢力により同フィルタケース内から飛び出しやすく、前記シール部材等の各部材が飛散しやすいため注意を払わなければならない。
【００１４】
また、前記フィルタ本体を取り付ける作業では、手で前記圧縮バネを支えながら同圧縮バネの付勢力に抗して各蓋体間に前記フィルタケースを差し込む必要があるため、同フィルタケースを不均一に差し込みやすく、前記圧縮バネ等が前記フィルタケース内からはみ出したり拗れたりしやすい。たとえ、これらの不具合がないように前記フィルタケースを各蓋体間に慎重に差し込んだとしても、同圧縮バネ等が捩じれた状態で各蓋体間に配されやすく、前記フィルタ本体と前記フィルタケースとの位置合わせや各部材間の相互位置の決定が極めて困難であるという諸々の問題が生じやすい。
【００１５】
本発明は、かかる従来の課題を解消すべくなされたものであり、その具体的な目的は、第１流路と第２流路との間の連通路に介在されたフィルタ本体を外部から容易に円滑に挿脱することができ、フィルタ本体の洗浄や交換等を効率よく実施することを可能とした液体用フィルタ装置を提供することにある。
【００１６】
【課題を解決するための手段及び作用効果】
前記目的は本件請求項１及び請求項２に記載された各発明により効果的に達成される。
本件請求項１に係る発明の液体用フィルタ装置は、第１流路と第２流路との間に介在され、前記第１流路から前記第２流路に流れる液体を濾過させる液体用フィルタ装置であって、前記第１流路及び第２流路間の連通路に配されるフィルタ本体と、前記フィルタ本体と連結固定され、前記第２流路から前記フィルタ本体と共に引抜自在な挿脱部材とを備えてなり、前記第２流路が外部に開口する開口部を有し、同第２流路内に延在する前記挿脱部材の自由端に、同第２流路の前記開口部を外部から開閉する閉塞部材を有し、前記挿脱部材は前記フィルタ本体と前記閉塞部材との間で前記フィルタ本体を支持するフィルタ支持部材を有し、前記フィルタ支持部材は前記第１流路及び第２流路間の連通路に液密的に嵌着し、前記フィルタ本体は前記第１流路側に配されている、ことを特徴としている。
【００１７】
ここで、本発明にあって「流路」という用語はオイル等の液体が高圧側から低圧側に流動したり滞留する空間等を言い、本発明の液体用フィルタ装置にあっては、タンク室の内部や配管の接続部等を含むものである。
【００１８】
上記構成に基づき、前記閉塞部材を脱着させることにより前記フィルタ本体を前記第１及び第２流路間の連通路を介して外部から同時に一体的に挿脱することができ、フィルタ本体挿脱用の部品点数が少なく手腕を汚さずフィルタ本体の挿脱作業を容易に効率よく実施することが可能である。従って、フィルタ本体の洗浄や交換等を効率よく実施することが可能となる。
【００１９】
更に本発明にあっては、上記構成を採用することにより前記第２流路にはポンプに接続される所望数の配管を接続することができ、前記閉塞部材にポンプ接続用の配管を配することも可能である。前記閉塞部材は前記挿脱部材の自由端又は前記第２流路の開口部に適宜選択して設けることができることに加えて、螺着や嵌着等による各種の固定手段が採用される。
【００２０】
かかる挿脱部材により、前記フィルタ本体は前記第１流路及び第２流路間の連通路から第２流路の前記開口部を通して外部から一体的に挿脱されるため、請求項２に係る発明のごとく、前記挿脱部材は、前記フィルタ本体を前記連通路に導入するための案内部材を有しており、請求項１に係る上記発明の作用効果に加えて前記案内部材により更に容易に且つ円滑に挿脱され、確実な位置決めがなされる。
【００２１】
【発明の実施の形態】
以下、本発明の好適な実施の形態を添付図面に基づいて具体的に説明する。
図１は本発明の代表的な第１実施例である液体用フィルタ装置を説明するためのタンクの側面図、図２は同フィルタ装置を図１のＡ−Ａ線に沿って切欠した部分断面図であり、図３は同フィルタ装置に適用される挿脱部材を説明するための側面図、図４は図３の矢視Ｚ方向からみた挿脱部材の要部を示す平面図であり、図５は同フィルタ装置の第２実施例を示す部分断面図、及び図６は同フィルタ装置の第３実施例を示す部分断面図である。
【００２２】
なお、これらの図にあって図７に示した上記従来技術と実質的に同様の部材に関しては、図７に付した符号と同一の符号を付している。また、本実施例では液体用フィルタ装置としてオイルタンク内に適用されるオイルフィルタ装置を例に挙げて説明するが、本発明はこれに限定されるものではなく、例えば配管と配管との接続部分などにも効果的に適用される。
【００２３】
図１及び図２に示すように、油タンク１は第１流路である第１タンク室１ａ及び第２流路である第２タンク室１ｄを備えている。同第２タンク室１ｄは円環状の取付フランジ６０の下面に固着された筒体３０を設けている。同筒体３０の取付フランジ６０は前記第１タンク室１ａの境界部１ｆの下方に突設された円環状のネジ込みブロック１０にシール部材１５を介して液密的に当接して複数の取付ボルト１１，１１…により固定されている。
【００２４】
前記第２タンク室１ｄを構成する筒体３０には図示せぬポンプに接続される所望数の配管３０ａを必要に応じて配することが可能であり、図示例にあっては、前記筒体３０に２個の配管３０ａ，３０ａが配されている。前記筒体３０の下端部は外部に開口する開口部３０ｂを有しており、同開口部３０ｂは後述する閉塞部材５７により開閉される。前記第１タンク室１ａの境界部１ｆに固定されたカバー体３１は前記筒体３０を取り囲んで泥や塵埃等の侵入を防止している。
【００２５】
図２に示すように前記第１及び第２タンク室１ａ，１ｄの間の連通路１ｇには本発明の液体用フィルタ装置であるオイルフィルタ装置２０が配される。このオイルフィルタ装置２０は、上端部に凹凸円盤状の端板４１ａを有する格子状の枠材に網体を囲繞させた円筒形をなすフィルタ本体４１を備えている。同フィルタ本体４１の下端部に形成された開口部３０ｂは断面略コ字形をなす円環状のフィルタ受座部４２に液密的に嵌着されている。本実施例にあっては、前記フィルタ受座部４２の外径は第２タンク室１ｄを構成する筒体３０の取付フランジ６０の内径よりも大きい寸法に設定されている。
【００２６】
上記のごとく構成されたフィルタ本体４１は、本発明の特徴部の一部をなす挿脱部材５０に連結固定される。図２〜図４に示すように、前記挿脱部材５０は前記筒体３０内に外部から引抜自在に配される長尺筒状の本体５１を備えている。同本体５１の上端部には、両側が本体５１の外側上方斜めに向けて末広がり状に延在された自由端を有する左右一対の略Ｕ字状の支持腕部５２，５２がそれぞれ固着されており、各支持腕部５２，５２は４個の自由端が略十文字状をなすように左右対称に配されている。
【００２７】
前記挿脱部材５０の本体５１の上端中央部には、各支持腕部５２，５２の間を介して先端にネジ部５３ａを有するロッド棒５３が立設されている。同ロッド棒５３には前記フィルタ本体４１の上端部の端板４１ａに穿設された取付孔４１ｂが挿入され、フィルタ本体４１が前記ロッド棒５３のネジ部５３ａに螺合するナット５３ｂにより締め付けられるようになっている。
【００２８】
前記支持腕部５２，５２の４個の自由端には、前記筒体３０の内部に挿脱部材５０の本体５１を導入案内させる円盤状の案内部材５４が固着されていると共に同案内部材５４の上方にフィルタ本体４１を支持する円環状の支持部材５５が固着されている。本実施例によれば、前記案内部材５４は前記挿脱部材５０の本体５１を前記筒体３０の内部に沿わせて円滑に導入案内するためのものであり、前記挿脱部材５０の本体５１と前記筒体３０との間に生じる位置ズレを防止することができ、前記フィルタ本体４１を正確な取付位置に配することが可能となる。
【００２９】
前記支持部材５５は円環状のフランジ部５５ａと同フランジ部５５ａの内周壁に沿って突設された円筒状のボス部５５ｂとを有している。同ボス部５５ｂはシール部材５を介して前記フィルタ本体４１のフィルタ受座部４２を液密的に嵌着する。前記フランジ部５５ａの上面部は前記フィルタ受座部４２の下面部に液密的に当接されると共に、その外周壁がシール部材５６を介して前記筒体３０の上端に固着された取付フランジ６０に液密的に内嵌される。
【００３０】
かかる構成によれば、前記支持部材５５に厳格な寸法精度を必要とせずに前記取付フランジ６０に対して取付自由度をもたせることが可能となり、前記支持部材５５及び取付フランジ６０の間の液密性を十分に向上させることができる。
【００３１】
一方、前記挿脱部材５０の本体５１の下端部には、第２タンク室１ｄを構成する前記筒体３０の開口部３０ｂを外部から開閉する円盤状の閉塞部材５７が固設されている。同閉塞部材５７の下面にはドレンポート５８が設けられている。図示例にあっては、前記閉塞部材５７は複数の取付ボルト５９，５９…により前記筒体３０の開口部３０ｂ周辺に形成されたフランジに密閉固定しているが、これに限定されることなく、 例えば前記筒体３０に低圧状態のオイル等の液体が流れ込む場合にはクリップ等による係合嵌着手段等を採用することも可能である。また、既述したように前記筒体３０にポンプ接続用の配管３０ａを配しているが、本発明によれば、前記閉塞部材５７にポンプ接続用の配管３０ａを配することが可能である。
【００３２】
以上のごとく説明した挿脱部材５０の構成により、同挿脱部材５０は前記第２タンク室１ｄを構成する前記筒体３０の開口部３０ｂから同筒体３０の内部に引抜自在に固定される。
上記のごとく構成された挿脱部材５０によれば、同挿脱部材５０は、第１タンク室１ａから離脱された第２タンク室１ｄを構成する前記筒体３０に沿って挿入される。挿脱部材５０の案内部材５４が前記筒体３０の内部に沿って位置ズレを抑制しながら、挿脱部材５０に固着された支持部材５５のフランジ部５５ａを前記筒体３０の上端に固着された取付フランジ６０にシール部材５６を介して液密的に内嵌させる。挿脱部材５０が前記筒体３０の内部に配されたのち、挿脱部材５０の下端部に設けられた閉塞部材５７を前記筒体３０の開口部３０ｂのフランジに複数の取付ボルト５９，５９…を締め付けて固定する。
【００３３】
次に、フィルタ受座部４２を嵌着させたフィルタ本体４１が前記筒体３０内に配された挿脱部材５０に連結固定される。フィルタ本体４１の上端の端板４１ａに穿設された取付孔４１ｂは挿脱部材５０のロッド棒５３に挿入され、フィルタ本体４１のフィルタ受座部４２がシール部材５を介して前記支持部材５５のボス部５５ｂに液密的に嵌着する。フィルタ本体４１が挿脱部材５０に嵌着すると、フィルタ本体４１の前記取付孔４１ｂを介して延在したロッド棒５３のネジ部５３ａをナット５３ｂにより締め付ける。かかる固定作業によりフィルタ本体４１と挿脱部材５０との連結固定が完了する。
【００３４】
そして、前記フィルタ本体４１が第１及び第２タンク室１ａ，１ｄの間の連通路１ｇ内に配される。先ず、同連通路１ｇ内にフィルタ本体４１を外部から挿入する。フィルタ本体４１を挿入すると、フィルタ本体４１のフィルタ受座部４２が第１タンク室１ａの境界部１ｆの下方に突設されたネジ込みブロック１０に液密的に嵌着する。このとき、前記筒体３０の取付フランジ６０がシール部材１５を介して前記ネジ込みブロック１０に当接する。複数の取付ボルト１１，１１…を締め付けて前記取付フランジ６０を前記ネジ込みブロック１０に固定する。
【００３５】
続いて、前記筒体３０に配管３０ａを接続する。かかる取付作業によってオイルフィルタ装置２０の設置が完了する。こうして、図２に示した矢印Ｂのごとく第１タンク室１ａ内の作動油はフィルタ本体４１を介して第２タンク室１ｄである筒体３０内に流れ込み、同筒体３０内の作動油は各配管３０ａ，３０ａの出口を通って図示せぬポンプに吸い込まれる。
【００３６】
前記オイルフィルタ装置２０を整備点検する場合には、第１及び第２タンク室１ａ，１ｄの作動油を抜き取った後、第２タンク室１ｄを構成する筒体３０の各配管３０ａ，３０ａを取り外すと共に、単に、複数の取付ボルト１１，１１…だけを緩めて前記筒体３０の取付フランジ６０を前記ネジ込みブロック１０から取り外す。各配管３０ａ，３０ａや前記取付フランジ６０を取り外した後、フィルタ本体４１及び挿脱部材５０と共に前記筒体３０を上記カバー体３１から引き出し、フィルタ本体４１を第１タンク室１ａから外部に取り出す。
【００３７】
この第１実施例によれば、フィルタ本体４１を前記第１及び第２タンク室１ａ，１ｄの間の前記連通路１ｇ内に挿脱させる場合には、既述したように単に、複数の取付ボルト１１，１１…だけを緩め、前記筒体３０の取付フランジ６０と前記ネジ込みブロック１０とを取り外せば足りるため、図７に示した従来の上記オイルフィルタ装置２と較べると、フィルタ本体４１を前記連通路１ｇ内から挿脱させるときの部品点数が少なくなり、フィルタ本体４１の挿脱作業に手間、労力や時間等がかからない。また、手腕等を作動油に触れずに、前記第１タンク１ａに設置されたフィルタ本体４１を外部から容易に円滑に且つ同時に挿脱することが可能であり、フィルタ本体４１の洗浄や交換等を効率よく実施することができる。
【００３８】
前記フィルタ本体４１を第１タンク室１ａから取り出したのち、前記挿脱部材５０のロッド棒５３に螺合したナット５３ｂを取り外し、前記ロッド棒５３を介して前記フィルタ受座部４２と一緒にフィルタ本体４１を取り外す。必要な場合には、複数の取付ボルト５９，５９…を緩めて前記挿脱部材５０の閉塞部材５７を掴んで前記筒体３０の開口部３０ｂのフランジから取外し、前記筒体３０の内部から外部に挿脱部材５０を引き抜く。フィルタ本体４１の洗浄又は交換等の整備点検後、既述したごとくフィルタ本体４１を挿脱部材５０に連結固定したのち、前記オイルフィルタ装置２０の上記取り外し作業とは逆の作業手順によって取付作業を実施する。
【００３９】
次に図５を参照すると、本発明にかかるオイルフィルタ装置２０の好適な第２実施例が示されている。上記第１実施例では、フィルタ本体４１が第２タンク室１ｄを構成する前記筒体３０と挿脱部材５０と共に引抜自在に設置した構造であったものを、この第２実施例では前記第２タンク室１ｄを構成した前記筒体３０を取り外さずに、フィルタ本体４１が挿脱部材５０と共に前記筒体３０から引抜自在に設置した構造である。なお、図５において上記第１実施例と実質的に同じ部材には同一の部材名と符号を付している。従って、これらの部材に関する詳細な説明は省略する。
【００４０】
図５に示すごとくフィルタ本体４１の下端部に形成された開口端に液密的に外嵌される断面略コ字形をなす円環状のフィルタ受座部４２の外径Ｒ１は、同フィルタ受座部４２を液密的に嵌着させる挿脱部材５０における支持部材５５のフランジ部５５ａの外径Ｒ２に対してＲ１＝Ｒ２の寸法関係になっている。第２タンク室１ｄを構成する前記筒体３０の円環状の取付フランジ６０の内径Ｒ３は、前記第１タンク室１ａの境界部１ｆの下方に突設された円環状のネジ込みブロック１０の内径Ｒ４に対してＲ３＝Ｒ４の寸法関係になっている。
【００４１】
この寸法関係によると、フィルタ本体４１の前記フィルタ受座部４２と挿脱部材５０の前記支持部材５５とが構成する外周面は、前記ネジ込みブロック１０及び前記取付フランジ６０が構成する内周面に対して同等の曲率面を有している。前記フィルタ受座部４２と前記支持部材５５とは前記ネジ込みブロック１０及び前記取付フランジ６０に対して引抜方向に沿って引抜自在に且つ液密的に内嵌され、挿脱部材５０の長尺筒状の本体５１の下端部に設けられた円盤状の閉塞部材５７が、前記筒体３０の開口部３０ｂを外部から密閉固定している。かかる構成によって第２タンク室１ｄを構成する前記筒体３０を取り外さずに、単に、前記フィルタ本体４１は前記挿脱部材５０と一緒に前記筒体３０から引抜自在に配される。
【００４２】
上記構成を採用することにより、フィルタ本体４１の前記フィルタ受座部４２と同フィルタ本体４１を連結固定する挿脱部材５０の前記支持部材５５とが、前記ネジ込みブロック１０及び前記取付フランジ６０の各内周面を自由に挿脱できるため、フィルタ本体４１は挿脱部材５０を介して第１及び第２タンク室１ａ，１ｄの間の前記連通路１ｇから第２タンク室１ｄを構成する前記筒体３０の開口部３０ｂを通して、作動油に触れずに外部から同時に円滑に且つ一体的に挿脱することが可能となる。しかも、上記第１実施例と較べると、フィルタ本体４１を挿脱する作業工数がさらに少なくなり、その作業工数の減少によりコストの軽減等がさらに効果的に達成される。
【００４３】
上記のごとく構成された本発明の第２実施例であるオイルフィルタ装置２０を第１及び第２タンク室１ａ，１ｄの間の連通路１ｇに設置する際には、先ず、挿脱部材５０の支持部材５５に設けられたボス部５５ｂにシール部材５を介してフィルタ本体４１のフィルタ受座部４２を液密的に嵌着させる。フィルタ本体４１のフィルタ受座部４２が挿脱部材５０の支持部材５５に嵌着すると同時に、挿脱部材５０に立設されたロッド棒５３のネジ部５３ａにフィルタ本体４１の上端部の端板４１ａに形成された取付孔４１ｂを挿入し、前記フィルタ本体４１をロッド棒５３のネジ部５３ａに螺合するナット５３ｂにより締め付ける。これにより、フィルタ本体４１が挿脱部材５０に連結固定される。
【００４４】
次に、前記挿脱部材５０に連結固定されたフィルタ本体４１が、予め第１タンク室１ａの境界部１ｆの下方に突設されたネジ込みブロック１０に固定されている第２タンク室１ｄを構成する筒体３０の開口部３０ｂから挿入される。フィルタ本体４１を前記筒体３０の内部に沿って挿入すると、前記挿脱部材５０の案内部材５４は前記筒体３０の内部に沿わせて円滑に導入案内するため、前記フィルタ本体４１は挿脱部材５０の前記支持部材５５から離脱せずに取付姿勢を保ったまま前記筒体３０内に沿って挿入される。
【００４５】
前記フィルタ本体４１が前記筒体３０内を経て第１タンク室１ａの内部に挿入され、前記フィルタ本体４１の下端部が第１及び第２タンク室１ａ，１ｄの間の前記連通路１ｇ内に入るとき、フィルタ本体４１の前記フィルタ受座部４２の外周面が前記取付フランジ６０の内周面を経て前記ネジ込みブロック１０の内周面に液密的に嵌着される。前記フィルタ受座部４２が前記ネジ込みブロック１０に嵌着されると同時に、挿脱部材５０の前記支持部材５５の外周面が、シール部材５６を介して前記取付フランジ６０の内周面に液密的に嵌着される。
【００４６】
このとき、挿脱部材５０の下端部に設けられた閉塞部材５７が前記筒体３０の開口部３０ｂに形成されたフランジに当接される。複数の取付ボルト５９，５９…により挿脱部材５０の前記閉塞部材５７を前記筒体３０のフランジに密閉固定する。そして、前記第２タンク室１ｄを構成する前記筒体３０に各配管３０ａ，３０ａを取り付ける。かかる取付作業によって作動油に触れずにオイルフィルタ装置２０の設置が完了する。
【００４７】
このように第１及び第２タンク室１ａ，１ｄの間の前記連通路１ｇ内に設置されたオイルフィルタ装置２０を取り外す場合には、予め前記第１及び第２タンク室１ａ，１ｄの作動油を抜き取ったのち、複数の取付ボルト５９，５９…を緩めて挿脱部材５０の前記閉塞部材５７を前記筒体３０のフランジから取り外す。
【００４８】
前記閉塞部材５７を取り外したのち、同閉塞部材５７を掴んで挿脱部材５０を前記筒体３０から引き抜く。挿脱部材５０を引き抜くと、同挿脱部材５０に連結固定されているフィルタ本体４１が追従して一瞬に引き抜かれる。以降、上述した第２実施例であるオイルフィルタ装置２０の取付作業と逆の作業順序で実施する。このとき、上記第１実施例のごとく前記第２タンク室１ｄを構成する前記筒体３０及び各配管３０ａ，３０ａを取り外す必要はない。
【００４９】
かかる構成を採用することにより、単に、前記第２タンク室１ｄを構成する筒体３０の開口部３０ｂを開閉する閉塞部材５７を取り外すだけで、前記第１タンク室１ａの下部に設けられたネジ込みブロック１０に前記筒体３０を取り付けたままの状態で同筒体３０内に配された挿脱部材５０と同挿脱部材５０に連結固定されたフィルタ本体４１とを、作動油に触れずに前記筒体３０の第２流路内から同第２流路の開口部３０ｂを経て、同時に円滑に且つ一体的に外部から引抜くことが可能となる。従って、手腕等を汚さずに前記フィルタ本体４１の挿脱作業をさらに簡単に、円滑に且つ効率よく実施することが可能となる。
【００５０】
更に、本発明にあって、上記のごとく構成された第２実施例であるオイルフィルタ装置２０の他には、図６に示したオイルフィルタ装置２０が好適に採用できる。図６は本発明にかかる第３実施例であるオイルフィルタ装置２０を示している。
【００５１】
上記第２実施例では、フィルタ本体４１がその下端部の開口端に嵌着された断面略コ字形をなす円環状のフィルタ受座部４２を介して第２タンク室１ｄを構成する筒体３０の第２流路内から引抜自在な挿脱部材５０に連結固定した構造であったものを、この第３実施例では、前記フィルタ受座部４２を用いずに、直接にフィルタ本体４１の下端部に設けられた円環状の端板４１ｃが挿脱部材５０に連結固定した構造である。なお、図６において上記第１及び第２実施例と実質的に同じ部材には同一の部材名と符号を付している。従って、これらの部材に関する詳細な説明は省略する。
【００５２】
図６において、フィルタ本体４１の格子状枠材の下端部は円環状の端板４１ｃを有しており、同端板４１ｃの中央部は、連結固定される挿脱部材５０が嵌着する開口部を有している。前記端板４１ｃの下面の所定部位には下方に向けて延びる円環状の止片４１ｄが延設されている。前記端板４１ｃの下面の内周縁と前記止片４１ｄとの間に形成された隅角部はシール部材５を介して前記挿脱部材５０の上端部に固着された円環状の支持部材５５のボス部５５ｂに液密的に嵌着されている。
【００５３】
図示例によれば、前記フィルタ本体４１の外径寸法Ｒ５と前記止片４１ｄの外径寸法Ｒ６とは、挿脱部材５０における支持部材５５のフランジ部５５ａの外径寸法Ｒ２に対してＲ２＞Ｒ５＞Ｒ６の関係となっている。前記フランジ部５５ａを液密的に内嵌させる前記筒体３０の円環状の取付フランジ６０の内径寸法Ｒ３は、前記第１タンク室１ａの境界部１ｆの下方に突設された円環状のネジ込みブロック１０の内径寸法Ｒ４に対してＲ３（＝Ｒ５）＜Ｒ４の関係になっている。
【００５４】
この設定寸法間隔によると、フィルタ本体４１の下端部が第１及び第２タンク室１ａ，１ｄの間の前記連通路１ｇ内に配されたとき、第１タンク室１ａの下部に形成されたネジ込みブロック１０と、同ネジ込みブロック１０に固定された筒体３０の取付フランジ６０と、同取付フランジ６０に嵌着された挿脱部材５０の支持部材５５と、同支持部材５５に連結固定されたフィルタ本体４１の下端部とにより取り囲まれた空洞部が形成される。同空洞部は前記連通路１ｇを介して第１タンク室１ａに連通している。前記支持部材５５及び前記取付フランジ６０の間に介在されたシール部材１５と、前記ネジ込みブロック１０及び前記取付フランジ６０の間に介在されたシール部材５６とにより前記空洞部からの作動油の漏洩が防止されている。
【００５５】
この第３実施例であるオイルフィルタ装置２０によれば、フィルタ本体４１の下端部に設けられた端板４１ｃの前記止片４１ｄと同端板４１ｃの前記内周縁との間に形成された隅角部がシール部材５を介して挿脱部材５０の支持部材５５に形成されたボス部５５ｂに液密的に嵌着する。フィルタ本体４１のフィルタ受座部４２が挿脱部材５０の支持部材５５に嵌着するとき、フィルタ本体４１の上端部の端板４１ａに形成された取付孔４１ｂが挿脱部材５０に立設されたロッド棒５３のネジ部５３ａに挿入するため、フィルタ本体４１をロッド棒５３のネジ部５３ａに螺合するナット５３ｂにより締め付ける。
【００５６】
これにより、フィルタ本体４１が挿脱部材５０に連結固定される。以降のオイルフィルタ装置２０の挿脱作業等は、上記第２実施例のごとく前記第２タンク室１ｄを構成する前記筒体３０及び各配管３０ａ，３０ａを取り外さずに上記第２実施例と同様に行われる。
【００５７】
かかる構成を採用することにより、上記第２実施例のごとく第１タンク室１ａの下部に形成されたネジ込みブロック１０に前記筒体３０を取り付けたままの状態で前記筒体３０の開口部３０ｂから挿脱部材５０の閉塞部材５７を取り外し、作動油に触れずに、単に前記閉塞部材５７を掴んで引き抜くだけで前記フィルタ本体４１と前記挿脱部材５０とだけを外部から同時に且つ一体的に引き抜くことが可能となる。上記各実施例と較べても、フィルタ本体挿脱用の部品点数がさらに少なくなり、その部品点数の減少により組立工数やコストの削減が一層効果的に達成される。加えて、作動油により手腕等を汚さずにフィルタ本体４１の挿脱作業等をさらに極めて簡単に効率よく実施することが可能となる。
【００５８】
以上の説明からも明らかなように、本発明にかかるオイルフィルタ装置によれば、フィルタ本体の組み立て方向と同一方向に外部から挿脱作業等を実施することが可能であり、前記フィルタ本体は第１及び第２流路の間の連通路を介して外部から同時に円滑に且つ一体的に、しかも液体に触れずに挿脱できる。このため、前記フィルタ本体の整備点検作業等を容易に効率よく実施することが可能となる。なお、上記実施例に限定されるものではなく、それらの実施例から当業者が容易に変更可能な技術的な範囲をも当然に包含するものである。
【図面の簡単な説明】
【図１】本発明の代表的な第１実施例である液体用フィルタ装置を説明するためのタンクの側面図である。
【図２】同フィルタ装置を図１のＡ−Ａ線に沿って切欠した部分断面図である。
【図３】同フィルタ装置に適用される挿脱部材を説明するための側面図である。
【図４】図３の矢視Ｚ方向からみた挿脱部材の要部を示す平面図である。
【図５】同フィルタ装置の第２実施例を示す部分断面図である。
【図６】同フィルタ装置の第３実施例を示す部分断面図である。
【図７】従来の液体用フィルタ装置を説明するための説明図である。
【符号の説明】
１ 油タンク
１ａ 第１タンク室
１ｂ 開口
１ｃ フィルタケース
１ｄ 第２タンク室
１ｅ，３０ｂ 開口部
１ｆ 境界部
１ｇ 連通路
２ オイルフィルタ装置
３，４１ フィルタ本体
４，４２ フィルタ受座部
５，15，56 シール部材
６ フィルタ取付フランジ
６ａ，５５ｂ ボス部
７,41a,41c 端板
８ 圧縮バネ
９，５３ ロッド棒
１０ ネジ込みブロック
１１，13，59 取付ボルト
１２ 配管出口
１４ 開閉部材
２０ 液体フィルタ装置
３０ 筒体
３０ａ 配管
３１ カバー体
４１ｂ 取付孔
４１ｄ 止片
５０ 挿脱部材
５１ 本体
５２ 支持腕部
５３ａ ネジ部
５３ｂ ナット
５４ 案内部材
５５ 支持部材
５５ａ フランジ部
５７ 閉塞部材
５８ ドレンポート
６０ 取付フランジ[0001]
[Industrial technical field]
The present invention relates to a liquid filter device that filters liquid flowing from a first flow path to a second flow path, and in particular, the filter body can be easily operated by an external operation from a communication path between the first flow path and the second flow path. In addition, the present invention relates to a liquid filter device that can be inserted / removed without touching the liquid, and that enables the filter body to be cleaned and replaced efficiently.
[0002]
[Prior art]
Conventionally, various liquids that are interposed between the first tank chamber 1a that is the first flow path and the second tank chamber 1d that is the second flow path and filter the liquid flowing from the first flow path to the second flow path. Filter devices have been proposed. For example, there is an oil filter device 2 housed in an oil tank 1 as shown in FIG. In this oil filter device 2, an annular filter seat portion 4 having a U-shaped cross section is liquid-tightly fitted to a lower end portion of a cylindrical filter body 3, and a seal member 5 is attached to the filter seat portion 4. The boss portion 6a of the annular filter mounting flange 6 having a single boss shape is fitted in a liquid-tight manner. An uneven end plate 7 is fixed to the upper end portion of the filter body 3, and a rod rod 9 having a compression spring 8 interposed is erected at the center of the end plate 7.
[0003]
According to this conventional oil filter device 2, the urging force of the compression spring 8 interposed in the rod rod 9 on the top plate portion of the filter case 1c fixed to the first tank chamber 1a via the opening 1b. Against this, the rod rod 9 is inserted, and the filter body 3 is inserted into the filter case 1c. Simultaneously with the insertion of the filter body 3, the filter seat 4 is brought into contact with the peripheral wall of the opening 1b of the first tank chamber 1a, and an annular screw block 10 is provided in the vicinity of the peripheral wall of the opening 1b. The filter mounting flange 6 is brought into contact with each other through a seal member 15 and is fastened by a plurality of mounting bolts 11, 11.
[0004]
With this configuration, the hydraulic oil in the tank 1 is filtered from the first tank chamber 1a through the filter body 3 in the filter case 1c and flows into the second tank chamber 1d. The hydraulic oil is sucked into a pump (not shown) through the pipe outlet 12.
[0005]
When the filter main body 3 assembled as described above is to be maintained and inspected, after opening the hydraulic oil in the first and second tank chambers 1a and 1d, first, an opening / closing member that opens and closes the second tank chamber 1d. The mounting bolts 13, 13,... For attaching the 14 are rotated to remove the opening / closing member 14 from the opening 1e of the second tank chamber 1d. Next, a removal tool is inserted into the second tank chamber 1d through the opened opening 1e, and a plurality of filter mounting flanges 6 fixed to the screw block 10 of the first tank chamber 1a by the removal tool. The mounting bolts 11, 11... Are gradually loosened while the elasticity of the compression spring 8 interposed in the rod rod 9 is attenuated.
[0006]
Then, after removing the final mounting bolt 11, the filter mounting flange 6 and the filter seat portion 4 together with the filter body 3 are moved from the filter case 1c of the first tank chamber 1a to the second tank chamber 1d. Then, it is pulled out integrally from the opening 1e of the second tank chamber 1d. After maintenance and inspection such as cleaning or replacement of the taken out filter body 3, the filter body 3 and the like are assembled to the filter mounting flange 6 via the filter seat portion 4 as described above. Then, the filter main body 3 is attached to the filter case 1c of the first tank chamber 1a by using a work procedure reverse to the above work for these assemblies.
[0007]
In addition to the oil filter device configured as described above, for example, there is an oil filter device disclosed in Japanese Utility Model Laid-Open No. 5-88609. The oil filter device disclosed in the publication is provided between an inlet of a pipe serving as a first flow path and an outlet of a pipe serving as a second flow path. This oil filter device closes the opening end surfaces on both sides in the cylinder axial direction of a cylindrical filter case containing a filter main body via a compression spring with a lid member via a seal member, and the lid body is a plurality of fastening tools. The filter body is clamped and fixed against the elastic force of the compression spring by tightening with the above. One lid is provided with the pipe inlet, and the other lid is provided with the pipe outlet.
[0008]
When servicing the filter body assembled as described above, first, the filter case and the lid are loosened by rotating a plurality of fasteners. Next, after removing a predetermined fastener, the filter body is pulled out in the cylinder radial direction against the urging force of the compression spring together with the filter body and the seal member accommodated in the filter case. To the outside.
[0009]
Then, after maintenance and inspection of the taken out filter body, a pair of lids connected to the pipe against the urging force of the compression spring in a state where the filter body and the seal member are accommodated in the filter case. The filter case is pushed in the cylinder radial direction. Next, the removed predetermined fastening tool is attached and the filter case is fastened against the urging force of the compression spring by a plurality of the fastening tools, and the filter body is sandwiched and fixed between the lids.
[0010]
According to such a configuration, since the sealing member is interposed between the opening end surfaces on both sides in the cylinder axis direction of the filter case and the lid body, the filter case is formed without removing the pipe connected to the oil filter device. By sliding in the radial direction, it is possible to replace the filter body, avoid oil leakage caused by detaching the piping, and easily perform operations such as replacing the filter body. Has the advantage.
[0011]
[Problems to be solved by the invention]
By the way, according to the conventional oil filter device shown in FIG. 7, when the filter body 3 is removed, the first and second tank chambers are opened through the opening 1e of the second tank chamber 1d as described above. Since it is necessary to pull out the filter body 3 to the outside from the communication path between 1a and 1d, in addition to the work of removing the plurality of mounting bolts 13, 13 ... of the opening / closing member 14 that opens and closes the opening 1e of the second tank. The operation of removing the plurality of mounting bolts 11, 11,... Of the filter mounting flange 6 of one tank chamber 1a has to be performed, and the number of parts to be attached / detached is large and very laborious, requiring considerable time and labor. To do. In addition, since the hands and arms have to be inserted into the communication passages of the first and second tank chambers 1a and 1d, there is a problem that the hands and arms are contaminated with hydraulic oil.
[0012]
Further, even when the filter body 3 is attached, the attachment work is performed in the reverse work procedure to the removal work of the filter body 3 as described above. Since the communication path between the first and second tank chambers 1a and 1d is difficult to see from the outside, there is also a problem that it is difficult to position the filter body 3 in the filter case 1c.
[0013]
On the other hand, in the oil filter device disclosed in Japanese Utility Model Laid-Open No. 5-88609, the filter case and the lid are loosened by rotating a plurality of fasteners in order to obtain the above-described effects. The filter case is pulled out in the cylinder radial direction against the urging force of the compression spring together with the filter body and the seal member accommodated in the filter case after the predetermined fastening tool is removed. Care must be taken when pulling out the case because the filter body is likely to jump out of the filter case due to the urging force of the compression spring, and each member such as the seal member is likely to scatter.
[0014]
In addition, in the work of attaching the filter body, it is necessary to insert the filter case between the lids against the urging force of the compression spring while supporting the compression spring by hand. It is easy to insert, and the compression spring or the like is likely to protrude or squeeze out of the filter case. Even if the filter case is carefully inserted between the lids so as not to have these problems, the filter main body and the filter case are easily arranged between the lids with the same compression spring or the like being twisted. And various problems that it is extremely difficult to determine the position of each other and the mutual position between the members.
[0015]
The present invention has been made to solve such conventional problems, and a specific object of the present invention is to facilitate the filter body interposed in the communication path between the first flow path and the second flow path from the outside. An object of the present invention is to provide a liquid filter device that can be smoothly inserted and removed and that can efficiently perform cleaning and replacement of the filter body.
[0016]
[Means for solving the problems and effects]
The object is effectively achieved by the inventions described in claims 1 and 2.
The liquid filter device according to the first aspect of the present invention is a liquid filter that is interposed between the first flow path and the second flow path, and filters the liquid flowing from the first flow path to the second flow path. A filter main body disposed in a communication path between the first flow path and the second flow path, and connected to and fixed to the filter main body, and is detachable with the filter main body from the second flow path. The opening of the second flow path at the free end of the insertion / removal member extending into the second flow path. Having a closing member for opening and closing the part from the outside, The insertion / removal member has a filter support member that supports the filter body between the filter body and the blocking member. , The filter support member is liquid-tightly fitted in the communication path between the first flow path and the second flow path, and the filter main body is disposed on the first flow path side. It is characterized by that.
[0017]
Here, in the present invention, the term “flow path” refers to a space or the like in which liquid such as oil flows or stays from the high pressure side to the low pressure side. In the liquid filter device of the present invention, the tank chamber This includes the inside of the pipe and the connecting part of the pipe.
[0018]
Based on the above configuration, the filter main body can be integrally inserted and removed simultaneously from the outside through the communication path between the first and second flow paths by detaching the blocking member. Therefore, it is possible to easily and efficiently carry out the insertion / removal operation of the filter body without contaminating the hands and arms. Therefore, it is possible to efficiently clean and replace the filter body.
[0019]
Further, in the present invention, by adopting the above configuration, a desired number of pipes connected to the pump can be connected to the second flow path, and a pipe for connecting the pump is arranged on the closing member. It is also possible. The closing member can be appropriately selected and provided at the free end of the insertion / removal member or the opening of the second flow path, and various fixing means such as screwing or fitting are employed.
[0020]
The filter body is integrally inserted and removed from the outside through the opening of the second flow path from the communication path between the first flow path and the second flow path by the insertion / removal member. As in the invention, the insertion / removal member has a guide member for introducing the filter body into the communication path, and in addition to the operation and effect of the invention according to claim 1, the insertion member is more easily provided by the guide member. And it is smoothly inserted and removed, and reliable positioning is made.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings.
FIG. 1 is a side view of a tank for explaining a liquid filter device according to a first embodiment of the present invention, and FIG. 2 is a partial cross-sectional view of the filter device cut along a line AA in FIG. FIG. 3 is a side view for explaining an insertion / removal member applied to the filter device, and FIG. 4 is a plan view showing a main part of the insertion / removal member viewed from the Z direction of FIG. FIG. 5 is a partial sectional view showing a second embodiment of the filter device, and FIG. 6 is a partial sectional view showing a third embodiment of the filter device.
[0022]
In these drawings, members substantially the same as those in the prior art shown in FIG. 7 are denoted by the same reference numerals as those in FIG. Further, in this embodiment, an oil filter device applied in an oil tank will be described as an example of a liquid filter device. However, the present invention is not limited to this, for example, a connection portion between pipes and pipes It is also applied effectively.
[0023]
As shown in FIGS. 1 and 2, the oil tank 1 includes a first tank chamber 1a that is a first flow path and a second tank chamber 1d that is a second flow path. The second tank chamber 1 d is provided with a cylindrical body 30 fixed to the lower surface of an annular mounting flange 60. The mounting flange 60 of the cylindrical body 30 is in liquid-tight contact with the annular screw-in block 10 projecting below the boundary portion 1f of the first tank chamber 1a via the seal member 15 and a plurality of mountings. It is fixed by bolts 11, 11.
[0024]
The cylinder 30 constituting the second tank chamber 1d can be provided with a desired number of pipes 30a connected to a pump (not shown) as needed. In the illustrated example, the cylinder 30 Two pipes 30 a and 30 a are arranged in 30. The lower end portion of the cylindrical body 30 has an opening 30b that opens to the outside, and the opening 30b is opened and closed by a closing member 57 described later. A cover body 31 fixed to the boundary portion 1f of the first tank chamber 1a surrounds the cylindrical body 30 to prevent intrusion of mud, dust and the like.
[0025]
As shown in FIG. 2, an oil filter device 20 which is a liquid filter device of the present invention is disposed in the communication path 1g between the first and second tank chambers 1a and 1d. The oil filter device 20 includes a filter body 41 having a cylindrical shape in which a net body is surrounded by a lattice-shaped frame member having an uneven disc-shaped end plate 41a at an upper end portion. An opening 30b formed at the lower end of the filter body 41 is fluid-tightly fitted to an annular filter seat 42 having a substantially U-shaped cross section. In this embodiment, the outer diameter of the filter seat 42 is set to be larger than the inner diameter of the mounting flange 60 of the cylindrical body 30 constituting the second tank chamber 1d.
[0026]
The filter main body 41 configured as described above is connected and fixed to the insertion / removal member 50 that forms a part of the feature of the present invention. As shown in FIGS. 2 to 4, the insertion / removal member 50 includes a long cylindrical main body 51 that is detachably provided in the cylindrical body 30 from the outside. A pair of left and right substantially U-shaped support arm portions 52, 52 each having a free end extending in a divergent shape toward both sides of the upper side of the main body 51 are fixed to the upper end portion of the main body 51. The support arm portions 52, 52 are arranged symmetrically so that the four free ends are substantially cross-shaped.
[0027]
A rod rod 53 having a threaded portion 53a at the tip is provided between the support arm portions 52, 52 at the center of the upper end of the main body 51 of the insertion / removal member 50. An attachment hole 41b drilled in the end plate 41a at the upper end of the filter body 41 is inserted into the rod bar 53, and the filter body 41 is tightened by a nut 53b that is screwed into the threaded part 53a of the rod bar 53. It is like that.
[0028]
At the four free ends of the support arm portions 52, 52, a disk-shaped guide member 54 that guides and guides the main body 51 of the insertion / removal member 50 is fixed inside the cylindrical body 30 and the guide member 54. An annular support member 55 that supports the filter body 41 is fixed to the upper side of the filter body 41. According to the present embodiment, the guide member 54 is for smoothly introducing and guiding the main body 51 of the insertion / removal member 50 along the inside of the cylindrical body 30, and the main body 51 of the insertion / removal member 50. And the cylindrical body 30 can be prevented from being displaced, and the filter main body 41 can be disposed at an accurate mounting position.
[0029]
The support member 55 has an annular flange portion 55a and a cylindrical boss portion 55b protruding along the inner peripheral wall of the flange portion 55a. The boss portion 55b fits the filter seat portion 42 of the filter body 41 through the seal member 5 in a liquid-tight manner. The upper surface portion of the flange portion 55 a is in liquid-tight contact with the lower surface portion of the filter seat portion 42, and the outer peripheral wall thereof is fixed to the upper end of the cylindrical body 30 via the seal member 56. 60 is liquid-tightly fitted.
[0030]
According to this configuration, the support member 55 can be provided with a degree of freedom of attachment to the attachment flange 60 without requiring strict dimensional accuracy, and the liquid tightness between the support member 55 and the attachment flange 60 can be achieved. Can be sufficiently improved.
[0031]
On the other hand, a disc-like closing member 57 for opening and closing the opening 30b of the cylindrical body 30 constituting the second tank chamber 1d from the outside is fixed to the lower end portion of the main body 51 of the insertion / removal member 50. A drain port 58 is provided on the lower surface of the closing member 57. In the illustrated example, the closing member 57 is hermetically fixed to a flange formed around the opening 30b of the cylindrical body 30 by a plurality of mounting bolts 59, 59... For example, when a liquid such as low-pressure oil flows into the cylindrical body 30, it is also possible to employ engagement fitting means such as a clip. In addition, as described above, the pipe connection pipe 30a is arranged on the cylindrical body 30, but according to the present invention, the pump connection pipe 30a can be arranged on the closing member 57. .
[0032]
With the configuration of the insertion / removal member 50 described above, the insertion / removal member 50 is detachably fixed to the inside of the cylindrical body 30 from the opening 30b of the cylindrical body 30 constituting the second tank chamber 1d. .
According to the insertion / removal member 50 configured as described above, the insertion / removal member 50 is inserted along the cylindrical body 30 constituting the second tank chamber 1d separated from the first tank chamber 1a. The flange portion 55 a of the support member 55 fixed to the insertion / removal member 50 is fixed to the upper end of the cylindrical body 30 while the guide member 54 of the insertion / removal member 50 suppresses positional displacement along the inside of the cylindrical body 30. The mounting flange 60 is fitted in a liquid-tight manner via a seal member 56. After the insertion / removal member 50 is disposed inside the cylindrical body 30, the closing member 57 provided at the lower end of the insertion / removal member 50 is attached to the flange of the opening 30 b of the cylindrical body 30 with a plurality of mounting bolts 59, 59. Tighten and fix.
[0033]
Next, the filter main body 41 to which the filter seat portion 42 is fitted is connected and fixed to the insertion / removal member 50 disposed in the cylindrical body 30. An attachment hole 41b drilled in the upper end plate 41a of the filter main body 41 is inserted into the rod bar 53 of the insertion / removal member 50, and the filter seat portion 42 of the filter main body 41 is interposed between the support member 55 via the seal member 5. The boss portion 55b is liquid-tightly fitted. When the filter main body 41 is fitted to the insertion / removal member 50, the threaded portion 53a of the rod bar 53 extending through the mounting hole 41b of the filter main body 41 is tightened by the nut 53b. By such a fixing operation, the coupling and fixing of the filter main body 41 and the insertion / removal member 50 is completed.
[0034]
The filter body 41 is disposed in the communication path 1g between the first and second tank chambers 1a and 1d. First, the filter body 41 is inserted into the communication passage 1g from the outside. When the filter main body 41 is inserted, the filter seat portion 42 of the filter main body 41 is liquid-tightly fitted into the screw-in block 10 protruding below the boundary portion 1f of the first tank chamber 1a. At this time, the mounting flange 60 of the cylindrical body 30 contacts the screwed block 10 via the seal member 15. A plurality of mounting bolts 11 are tightened to fix the mounting flange 60 to the screw-in block 10.
[0035]
Subsequently, a pipe 30 a is connected to the cylindrical body 30. Installation of the oil filter device 20 is completed by such attachment work. Thus, the hydraulic oil in the first tank chamber 1a flows into the cylindrical body 30 as the second tank chamber 1d through the filter main body 41 as shown by the arrow B in FIG. 2, and the hydraulic oil in the cylindrical body 30 is It is sucked into a pump (not shown) through the outlet of each pipe 30a, 30a.
[0036]
When servicing the oil filter device 20, the hydraulic oil in the first and second tank chambers 1a and 1d is drained, and then the pipes 30a and 30a of the cylindrical body 30 constituting the second tank chamber 1d are removed. At the same time, the mounting flange 60 of the cylindrical body 30 is removed from the screw-in block 10 simply by loosening only the plurality of mounting bolts 11, 11. After the pipes 30a, 30a and the mounting flange 60 are removed, the tubular body 30 is pulled out from the cover body 31 together with the filter body 41 and the insertion / removal member 50, and the filter body 41 is taken out from the first tank chamber 1a.
[0037]
According to the first embodiment, when the filter body 41 is inserted into and removed from the communication passage 1g between the first and second tank chambers 1a and 1d, as described above, a plurality of attachments are simply used. It is sufficient to loosen only the bolts 11, 11... And remove the mounting flange 60 and the screwed block 10 of the cylindrical body 30, so that the filter body 41 can be compared with the conventional oil filter device 2 shown in FIG. The number of parts when inserting / removing from the communication passage 1g is reduced, and the insertion / removal work of the filter main body 41 does not take time, labor, time and the like. Further, it is possible to easily and smoothly insert and remove the filter main body 41 installed in the first tank 1a from the outside without touching the working arm with the working oil, and the filter main body 41 can be washed or replaced. Can be implemented efficiently.
[0038]
After the filter body 41 is taken out from the first tank chamber 1a, the nut 53b screwed to the rod bar 53 of the insertion / removal member 50 is removed, and the filter together with the filter seat portion 42 is removed via the rod bar 53. The main body 41 is removed. If necessary, the plurality of mounting bolts 59 are loosened to grasp the closing member 57 of the insertion / removal member 50 and remove it from the flange of the opening 30b of the cylindrical body 30. The insertion / removal member 50 is pulled out. After maintenance inspection such as cleaning or replacement of the filter main body 41, the filter main body 41 is connected and fixed to the insertion / removal member 50 as described above, and then the attachment work is performed according to the work procedure opposite to the above-described removal work of the oil filter device 20. carry out.
[0039]
Referring now to FIG. 5, there is shown a second preferred embodiment of the oil filter device 20 according to the present invention. In the first embodiment, the filter main body 41 has a structure in which the filter body 41 and the insertion / removal member 50 constituting the second tank chamber 1d are detachably installed. In this structure, the filter body 41 is installed together with the insertion / removal member 50 so as to be detachable from the cylinder 30 without removing the cylinder 30 constituting the tank chamber 1d. In FIG. 5, the same member names and symbols are assigned to substantially the same members as in the first embodiment. Therefore, the detailed description regarding these members is omitted.
[0040]
As shown in FIG. 5, the outer diameter R1 of the annular filter seat portion 42 having a substantially U-shaped cross section that is liquid-tightly fitted to the open end formed at the lower end portion of the filter body 41 is the same as the filter seat. The dimensional relationship of R1 = R2 is established with respect to the outer diameter R2 of the flange portion 55a of the support member 55 in the insertion / removal member 50 in which the portion 42 is liquid-tightly fitted. The inner diameter R3 of the annular mounting flange 60 of the cylindrical body 30 constituting the second tank chamber 1d is the inner diameter of the annular screw-in block 10 protruding below the boundary portion 1f of the first tank chamber 1a. R3 = R4 in relation to R4.
[0041]
According to this dimensional relationship, the outer peripheral surface formed by the filter seat portion 42 of the filter body 41 and the support member 55 of the insertion / removal member 50 is the inner peripheral surface formed by the screw block 10 and the mounting flange 60. Have the same curvature surface. The filter receiving portion 42 and the support member 55 are fitted in the screw-in block 10 and the mounting flange 60 in such a manner that they can be pulled out and liquid-tight along the pulling direction. A disk-shaped closing member 57 provided at the lower end of the cylindrical main body 51 hermetically fixes the opening 30b of the cylindrical body 30 from the outside. With this configuration, the filter body 41 is simply detachable from the cylindrical body 30 together with the insertion / removal member 50 without removing the cylindrical body 30 constituting the second tank chamber 1d.
[0042]
By adopting the above configuration, the filter seat portion 42 of the filter main body 41 and the support member 55 of the insertion / removal member 50 for connecting and fixing the filter main body 41 are connected to the screwed block 10 and the mounting flange 60. Since each inner peripheral surface can be freely inserted and removed, the filter main body 41 constitutes the second tank chamber 1d from the communication passage 1g between the first and second tank chambers 1a and 1d via the insertion / removal member 50. Through the opening 30b of the cylindrical body 30, it becomes possible to insert and remove smoothly and integrally simultaneously from the outside without touching the hydraulic oil. In addition, compared with the first embodiment, the number of work steps for inserting and removing the filter main body 41 is further reduced, and the reduction of the number of work steps can achieve the reduction of cost and the like more effectively.
[0043]
When installing the oil filter device 20 according to the second embodiment of the present invention configured as described above in the communication path 1g between the first and second tank chambers 1a and 1d, first, the insertion / removal member 50 The filter seat portion 42 of the filter main body 41 is liquid-tightly fitted to the boss portion 55 b provided on the support member 55 via the seal member 5. At the same time that the filter seat portion 42 of the filter main body 41 is fitted to the support member 55 of the insertion / removal member 50, the end plate of the upper end portion of the filter main body 41 is fitted to the screw portion 53 a of the rod rod 53 erected on the insertion / removal member 50. The mounting hole 41b formed in 41a is inserted, and the filter body 41 is tightened by a nut 53b that is screwed into the threaded portion 53a of the rod bar 53. Thereby, the filter main body 41 is connected and fixed to the insertion / removal member 50.
[0044]
Next, the filter body 41 connected and fixed to the insertion / removal member 50 is fixed to the second tank chamber 1d fixed to the screwed block 10 protruding in advance below the boundary portion 1f of the first tank chamber 1a. It inserts from the opening part 30b of the cylinder 30 which comprises. When the filter body 41 is inserted along the inside of the cylindrical body 30, the guide member 54 of the insertion / removal member 50 smoothly introduces and guides along the inside of the cylindrical body 30. The member 50 is inserted along the cylindrical body 30 while maintaining the mounting posture without detaching from the support member 55.
[0045]
The filter main body 41 is inserted into the first tank chamber 1a through the cylindrical body 30, and the lower end of the filter main body 41 is in the communication path 1g between the first and second tank chambers 1a and 1d. When entering, the outer peripheral surface of the filter seat portion 42 of the filter main body 41 is liquid-tightly fitted to the inner peripheral surface of the screw-in block 10 through the inner peripheral surface of the mounting flange 60. At the same time that the filter seat 42 is fitted to the screw-in block 10, the outer peripheral surface of the support member 55 of the insertion / removal member 50 is liquidated to the inner peripheral surface of the mounting flange 60 via the seal member 56. Closely fitted.
[0046]
At this time, the closing member 57 provided at the lower end of the insertion / removal member 50 is brought into contact with a flange formed in the opening 30 b of the cylindrical body 30. The closing member 57 of the insertion / removal member 50 is hermetically fixed to the flange of the cylindrical body 30 by a plurality of mounting bolts 59, 59. And each piping 30a and 30a is attached to the said cylinder 30 which comprises the said 2nd tank chamber 1d. The installation of the oil filter device 20 is completed without touching the hydraulic oil by such mounting work.
[0047]
When the oil filter device 20 installed in the communication path 1g between the first and second tank chambers 1a and 1d is removed as described above, the hydraulic oil in the first and second tank chambers 1a and 1d is previously removed. Are removed, the plurality of mounting bolts 59 are loosened, and the closing member 57 of the insertion / removal member 50 is removed from the flange of the cylindrical body 30.
[0048]
After removing the blocking member 57, the plugging member 50 is pulled out of the cylindrical body 30 by grasping the blocking member 57. When the insertion / removal member 50 is pulled out, the filter body 41 connected and fixed to the insertion / removal member 50 follows and is pulled out instantly. Thereafter, the operation is performed in the reverse order of the mounting operation of the oil filter device 20 according to the second embodiment described above. At this time, it is not necessary to remove the cylindrical body 30 and the pipes 30a, 30a constituting the second tank chamber 1d as in the first embodiment.
[0049]
By adopting such a configuration, the screw provided at the lower portion of the first tank chamber 1a can be simply removed by removing the closing member 57 that opens and closes the opening 30b of the cylindrical body 30 constituting the second tank chamber 1d. The insertion / removal member 50 disposed in the cylindrical body 30 and the filter main body 41 connected and fixed to the insertion / removal member 50 with the cylindrical body 30 attached to the insertion block 10 without touching the hydraulic oil. Further, it is possible to smoothly and integrally withdraw from the outside through the second flow path of the cylindrical body 30 through the opening 30b of the second flow path. Therefore, the insertion / removal operation of the filter body 41 can be performed more easily, smoothly and efficiently without contaminating the hands and arms.
[0050]
Furthermore, in the present invention, the oil filter device 20 shown in FIG. 6 can be suitably employed in addition to the oil filter device 20 according to the second embodiment configured as described above. FIG. 6 shows an oil filter device 20 according to a third embodiment of the present invention.
[0051]
In the second embodiment, the cylindrical body 30 that constitutes the second tank chamber 1d via the annular filter seat portion 42 having a substantially U-shaped cross section in which the filter body 41 is fitted to the opening end of the lower end portion thereof. In the third embodiment, the lower end of the filter main body 41 is directly connected to the insertion / removal member 50 that can be pulled out from the second flow path without using the filter seat 42 in the third embodiment. This is a structure in which an annular end plate 41 c provided in the section is connected and fixed to the insertion / removal member 50. In FIG. 6, substantially the same members as those in the first and second embodiments are given the same member names and symbols. Therefore, the detailed description regarding these members is omitted.
[0052]
In FIG. 6, the lower end portion of the grid frame member of the filter body 41 has an annular end plate 41 c, and the central portion of the end plate 41 c is an opening into which the connecting / fixing member 50 is fitted. Has a part. An annular stop piece 41d extending downward is provided at a predetermined portion of the lower surface of the end plate 41c. A corner portion formed between the inner peripheral edge of the lower surface of the end plate 41c and the stop piece 41d is an annular support member 55 fixed to the upper end portion of the insertion / removal member 50 via the seal member 5. The boss 55b is fitted in a liquid-tight manner.
[0053]
According to the illustrated example, the outer diameter R5 of the filter body 41 and the outer diameter R6 of the stopper 41d are R2> with respect to the outer diameter R2 of the flange portion 55a of the support member 55 in the insertion / removal member 50. The relationship is R5> R6. An inner diameter R3 of the annular mounting flange 60 of the cylindrical body 30 for fitting the flange portion 55a in a liquid-tight manner is an annular screw projecting below the boundary portion 1f of the first tank chamber 1a. The relationship is R3 (= R5) <R4 with respect to the inner diameter R4 of the insert block 10.
[0054]
According to this set dimension interval, when the lower end portion of the filter body 41 is disposed in the communication passage 1g between the first and second tank chambers 1a and 1d, the screw formed at the lower portion of the first tank chamber 1a. The insertion block 10, the mounting flange 60 of the cylindrical body 30 fixed to the screwing block 10, the support member 55 of the insertion / removal member 50 fitted to the attachment flange 60, and the support member 55 are connected and fixed. A hollow portion surrounded by the lower end portion of the filter body 41 is formed. The hollow portion communicates with the first tank chamber 1a through the communication passage 1g. Leakage of hydraulic fluid from the cavity due to the seal member 15 interposed between the support member 55 and the mounting flange 60 and the seal member 56 interposed between the screw-in block 10 and the mounting flange 60. Is prevented.
[0055]
According to the oil filter device 20 according to the third embodiment, a corner formed between the stop piece 41d of the end plate 41c provided at the lower end of the filter body 41 and the inner peripheral edge of the end plate 41c. The corner portion is liquid-tightly fitted to the boss portion 55 b formed on the support member 55 of the insertion / removal member 50 via the seal member 5. When the filter seat portion 42 of the filter body 41 is fitted to the support member 55 of the insertion / removal member 50, a mounting hole 41 b formed in the end plate 41 a at the upper end portion of the filter body 41 is erected on the insertion / removal member 50. In order to insert into the threaded portion 53 a of the rod rod 53, the filter body 41 is tightened by a nut 53 b that is screwed into the threaded portion 53 a of the rod rod 53.
[0056]
Thereby, the filter main body 41 is connected and fixed to the insertion / removal member 50. Subsequent insertion and removal operations of the oil filter device 20 and the like are the same as those in the second embodiment without removing the cylindrical body 30 and the pipes 30a and 30a constituting the second tank chamber 1d as in the second embodiment. To be done.
[0057]
By adopting such a configuration, the opening 30b of the cylindrical body 30 with the cylindrical body 30 still attached to the screwed block 10 formed in the lower part of the first tank chamber 1a as in the second embodiment. The filter body 41 and the insertion / removal member 50 are simultaneously and integrally removed from the outside by simply removing the closing member 57 from the insertion / removal member 50 and simply grasping and removing the closure member 57 without touching the hydraulic oil. It can be pulled out. Compared to the above embodiments, the number of parts for inserting and removing the filter main body is further reduced, and the reduction of the number of parts makes it possible to more effectively reduce the number of assembly steps and costs. In addition, it is possible to more easily and efficiently carry out the insertion / removal operation and the like of the filter main body 41 without contaminating the hands and arms with the hydraulic oil.
[0058]
As is clear from the above description, according to the oil filter device of the present invention, it is possible to perform an insertion / removal operation and the like from the outside in the same direction as the assembly direction of the filter body. It can be smoothly and integrally simultaneously inserted from the outside through the communication path between the first and second flow paths without touching the liquid. For this reason, it is possible to easily and efficiently carry out maintenance and inspection work of the filter body. In addition, it is not limited to the said Example, Of course, the technical range which those skilled in the art can change easily from those Examples is also included.
[Brief description of the drawings]
FIG. 1 is a side view of a tank for explaining a liquid filter device according to a first embodiment of the present invention.
2 is a partial cross-sectional view of the filter device taken along line AA in FIG. 1; FIG.
FIG. 3 is a side view for explaining an insertion / removal member applied to the filter device.
4 is a plan view showing the main part of the insertion / removal member as seen from the direction of the arrow Z in FIG. 3;
FIG. 5 is a partial sectional view showing a second embodiment of the filter device.
FIG. 6 is a partial sectional view showing a third embodiment of the filter device.
FIG. 7 is an explanatory diagram for explaining a conventional liquid filter device.
[Explanation of symbols]
1 Oil tank
1a First tank chamber
1b opening
1c Filter case
1d Second tank chamber
1e, 30b opening
1f border
1g communication path
2 Oil filter device
3,41 Filter body
4,42 Filter seat
5, 15, 56 Seal member
6 Filter mounting flange
6a, 55b Boss
7,41a, 41c end plate
8 Compression spring
9,53 Rod rod
10 Screwed block
11, 13, 59 Mounting bolt
12 Piping outlet
14 Opening and closing member
20 Liquid filter device
30 cylinder
30a piping
31 Cover body
41b Mounting hole
41d Stopper
50 Insertion / removal member
51 body
52 Support arm
53a Screw part
53b nut
54 Guide members
55 Support members
55a Flange
57 Closure member
58 Drain port
60 Mounting flange

Claims (2)

第１流路と第２流路との間に介在され、前記第１流路から前記第２流路に流れる液体を濾過させる液体用フィルタ装置であって、
前記第１流路及び第２流路間の連通路に配されるフィルタ本体と、
前記フィルタ本体と連結固定され、前記第２流路から前記フィルタ本体と共に引抜自在な挿脱部材と、
を備えてなり、
前記第２流路が外部に開口する開口部を有し、
同第２流路内に延在する前記挿脱部材の自由端に、同第２流路の前記開口部を外部から開閉する閉塞部材を有し、
前記挿脱部材は前記フィルタ本体と前記閉塞部材との間で前記フィルタ本体を支持するフィルタ支持部材を有し、
前記フィルタ支持部材は前記第１流路及び第２流路間の連通路に液密的に嵌着し、
前記フィルタ本体は前記第１流路側に配されてなる、
ことを特徴とする液体用フィルタ装置。A liquid filter device that is interposed between a first flow path and a second flow path, and filters liquid flowing from the first flow path to the second flow path,
A filter body disposed in a communication path between the first flow path and the second flow path;
An insertion / removal member that is connected and fixed to the filter body, and that can be pulled out together with the filter body from the second flow path;
With
The second flow path has an opening that opens to the outside;
A free end of the insertion / removal member extending into the second flow path has a closing member that opens and closes the opening of the second flow path from the outside,
The insertion / removal member has a filter support member that supports the filter body between the filter body and the closing member ,
The filter support member is fluid-tightly fitted in the communication path between the first flow path and the second flow path,
The filter body is arranged on the first flow path side ,
A liquid filter device. 前記挿脱部材が前記フィルタ本体を前記連通路に導入するための案内部材を有してなる請求項１記載の液体用フィルタ装置。The liquid filter device according to claim 1, wherein the insertion / removal member includes a guide member for introducing the filter body into the communication path.

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