JP3775320B2

JP3775320B2 - Pressure drainage device

Info

Publication number: JP3775320B2
Application number: JP2002078762A
Authority: JP
Inventors: 昇作野田; 裕文佐藤; 信次豊福; 邦治重松
Original assignee: 東陶機器株式会社
Priority date: 2002-03-20
Filing date: 2002-03-20
Publication date: 2006-05-17
Anticipated expiration: 2022-03-20
Also published as: JP2003278204A

Description

【０００１】
【発明の属する技術分野】
本発明は、排水器具からの排水をポンプにて圧送し、かつ逆流防止弁を備えた圧送排水装置に関する。
【０００２】
【従来の技術】
圧送排水装置は、貯水槽内に圧送ポンプと水位検知スイッチと粉砕装置を設置し、屎尿および風呂の残り湯、洗濯・洗面などの雑排水を貯留槽に集め、圧送ポンプを作動させ、同時にカッターで屎尿を粉砕し、粉砕された屎尿や排水を圧送管に通して圧送排出する装置である。このような圧送排水装置は、下水管より低い位置に設置された地下室や、排水管の勾配がとれない建物など、強制的に排水させる場所で必要とされている。さらに今後は、排水管の口径を小さくして配管スペースを小さくしたシステムや、排水管にフレキシブル性を持たせ施工性および可変性を向上させたシステムで多用されることが予想される。
【０００３】
一方、圧送排水装置は、モータやカッターを使用するため、従来の重力式排水システムに比べ、どうしても故障が多く発生し、修理や交換が必要となる。さらに用途によっては圧送装置の移動や撤去が従来に比べ頻繁に行われることとなり、タンクや圧送管を取外す作業が多分に発生する。この際重要なこととして衛生的に作業を行うことが挙げられ、特に屎尿や排水を圧送排水装置や排水経路の外部に漏らすことはあってはならない。
【０００４】
ＳＦＡ社製の圧送排水装置ＳＡＮＩ−ＰＡＣＫは、排水を貯留するタンクと、前記タンク内の排水を外部に排出する圧送ポンプ部と、排水を送水する圧送管と、前記圧送ポンプ部と前記圧送管を接続する逆止弁部を備えている。図１０に示すように前記逆止弁部１２０は、圧送ポンプ部１２１を接続する上流接続部１２２と、圧送管１２３を接続する下流接続部１２４と、弁体１２５と、弁体１２５より下流側の排水流路の壁面１２６と仕切られた分岐管１２７を備えている。
上記圧送排水装置の通常動作では、圧送ポンプ部１２１より圧送された排水は、破線のように弁体１２５を押し上げ、圧送管１２３を通過し、その先の下水管等へ流出する。圧送ポンプ部１２１が停止すると、圧送管１２３から逆流する排水によって弁体１２５が閉じ、圧送管１２３内の排水がタンク側へ逆流するのを防ぐ。よって、圧送管１２３内には排水が残留することとなる。
圧送排水装置や圧送管を撤去する際、圧送管に残留する排水を取除く必要がある。その場合は、図１１に示すように、逆止弁部１２０に備えられた分岐管１２７と排水流路を隔てる壁面１２６に針で穴を開け、圧送管１２３内の圧力によって噴き出す排水を別に用意した容器１２８で受け取ることとしている。
【０００５】
【発明が解決しようとする課題】
しかしながら、上記方法では、針を刺して抜いてから排水を容器で受けるため、針を抜いてから容器をセットする間に、周囲に排水が飛び散ってしまい非常に不衛生である。また、別に容器を準備する必要があり手間である。さらに一度針を刺して穴を開けた逆止弁部は、使用不能となり、簡単な修理や点検で圧送管の排水を除去するたびに逆止弁部の交換が必要であり、施工面でもメンテナンスコストの面でも不利である。
本発明は、上記課題を解決するためになされたもので、本発明の目的は、圧送管に残留した排水を衛生的に、かつ容易に除去できる逆止弁を備えた圧送排水装置を提供することにある。
【０００６】
【課題を解決するための手段および作用・効果】
上記目的を達成するために請求項１は、排水器具からの排水を貯留できるタンクと、該タンク内の排水を外部に送り出す圧送ポンプ部と、一端が圧送ポンプに連通し、他端が圧送ポンプ部より上方で大気開放された圧送管と、前記圧送ポンプ部と前記圧送管を接続する逆止弁部とを備えた圧送排水装置において、
前記逆止弁部は、前記圧送ポンプ部と前記圧送管を連通する連通路と、前記連通路の圧送管側の連通口周囲に設けた弁座と、前記圧送ポンプ部駆動時の圧送された排水により前記連通口の開放方向に移動し、前記圧送ポンプ部停止時の逆流する排水の圧力により前記弁座に当接して前記連通口を閉塞する弁体と、前記弁体を強制的に移動させ逆流を促す強制開口手段と、を備えたことを特徴とする。
通常使用時において、排水器具から流水する排水は、タンクに貯留され、さらにタンク内の圧送ポンプによって圧送され、逆止弁の連通路を通過し、弁体を押し上げ、出口が圧送ポンプより上方で大気開放された圧送管に送水され、圧送管より下流の排水経路に流れる。圧送ポンプが停止すると、圧送管内の排水は重力で圧送ポンプ側に逆流しようとするが、弁体はこの排水の圧力によって弁座と当接し、排水が逆流するのを防ぐ。
圧送排水装置の修理や撤去等で圧送管内の排水を除去する際は、逆止弁部に備えられた強制開口手段を操作し、弁体を強制的に開放方向へ移動させ、圧送管内の排水を圧送ポンプ側へ逆流させ、タンク内に貯留させる。
これにより、圧送管内に残留した排水は、圧送排水装置または排水経路以外を通過することなく、タンクに戻るため、外部に飛び散ることが無く衛生的である。また、強制開口手段を操作するだけで良いため簡単である。さらに強制開口手段を元に戻す構造とすると再び逆止弁として使用ができ、コスト面で有利である。
【０００７】
本発明の好ましい態様においては、前記弁体をスイング式とし、前記強制開口手段は、前記弁体の下流側に接続された伝達手段と、前記伝達手段を外部から引っ張り、前記連通口を開放させる操作部から成ることを特徴とする。ここでいう伝達手段とは、例えば紐のような物をさし、張力がかからない時は容易にたわみ、張力をかけた時は伸びが少ないものを指す。
通常使用時において、圧送ポンプ部の稼動で圧送された排水は、スイング式の弁体を押し上げ、スムーズに逆止弁部を通過する。この時、スイング式の弁体は排水の流路を狭めることは無い。圧送ポンプが停止すると、圧送管の排水が逆流しようとするが、スイング式の弁体は直ちに弁座と当接し、連通口を塞ぎ、排水が逆流するのを確実に防ぐ。また、弁体の下流側に接続された伝達手段ほとんど弁体の開閉に関与することは無い。
圧送管内の排水を除去する時は、一端が弁体に接続された伝達手段を操作部によって引っ張り、弁体を開放方向へ移動させる。これにより、圧送管内の残水はタンク内へ流下する。
よって、圧送管の残水を容易に、衛生的に除去することができる。また、何度でも繰返して使用可能であり、コストの面でも有利となる。さらに圧送管の流路を狭めたり、排水流路中に障害や突起が無いため、排水中に含まれる人毛や、汚物中に含まれる繊維質やトイレットペーパーが引っかかり圧送管が詰まることは無い。
【０００８】
本発明の好ましい態様においては、前記弁体をスイング式とし、前記強制開口手段は、前記弁座の連通口の口径を調整できる口径調整手段としたことを特徴とする。
通常使用時は、前記と同様に、スイング式の弁体は、排水流路を狭めることなく開口し、また、圧送管に残水した排水の逆流を確実に防ぐ。
圧送管内の排水を除去する時は、口径調整手段で弁座の口径を広げ、弁体の口径より大きくすと、弁体は圧送管内の残水の圧力によって、上流方向へ開口し、圧送管内に残留した排水が、一気にタンク側に逆流する。
よって、圧送管の残水を容易に、衛生的に除去することができる。また、圧送管の流路を狭めたり、排水流路中に障害や突起が無いため、排水中に含まれる人毛や、汚物中に含まれる繊維質やトイレットペーパーが引っかかり圧送管が詰まることは無い。さらに何度でも使用できる。
【０００９】
本発明の好ましい態様においては、前記逆止弁部は連通口より下流を９０度曲げたエルボ型とし、前記弁体は下流側に案内棒を有したリフト式とし、前記エルボ型の逆止弁部は曲り部の壁面に前記案内棒をガイドするガイド部を有し、前記強制開口手段は、前記ガイド部に設けた伸縮構造であることを特徴とする。
通常使用時において、圧送された排水は、リフト式の弁体を押し上げ、エルボ型逆止弁部を通過して、略直角方向に流れ方向を変え、圧送管へと流れる。リフト式弁体は案内棒を有しており、該案内棒が逆止弁部のガイド部に沿って移動し、圧送流路を狭めることはない。圧送ポンプが停止すると弁体が閉塞方向に移動し、排水の逆流を防止する。
圧送管内の排水を除去する時は、ガイド部の伸縮部を引っ張り、同時に案内棒を通じて弁体を持ち上げ、圧送管内の排水をタンク側に戻すことができる。
よって、圧送管の残水を容易に、衛生的に除去することができる。また、圧送管の流路を狭めたり、排水流路中に障害や突起が無いため、排水中に含まれる人毛や、汚物中に含まれる繊維質やトイレットペーパーが引っかかり圧送管が詰まることは無い。さらに何度でも使用できる。
【００１０】
本発明の好ましい態様においては、前記強制開口手段は、前記弁体に内蔵された永久磁石と、前記弁座に内蔵され、電通すると前記永久磁石と反発するように配置された電磁石から成ることを特徴とする請求項１に記載の圧送排水装置。
通常使用時は、前記と同様に、弁体はスイング式でも、リフト式でも良く、排水をスムーズに通過させ、圧送ポンプが停止すると圧送管内の逆流を防止する。
圧送管内の排水を除去したい時には、弁座に収納された電磁石に電圧をかけ、弁体の永久磁石と反発させて、その力によって弁体が下流側に移動し、圧送管内の排水がタンク側へ逆流する。
よって、圧送管の残水を容易に、衛生的に除去することができる。また、圧送管の流路を狭めたり、排水流路中に障害や突起が無いため、排水中に含まれる人毛や、汚物中に含まれる繊維質やトイレットペーパーが引っかかり圧送管が詰まることは無い。さらに何度でも使用できる。
【００１１】
本発明の好ましい態様においては、前記強制開口手段は、前記弁体を押し上げることができる押上げシャフトと、前記弁座より上流側の前記逆止弁部に備えられ、前記シャフトを脱着できる挿入部とから成ることを特徴とする。
通常使用時は、前記同様弁体は、排水をスムーズに通過させ、圧送管に残留した排水の逆流を防ぐ。
圧送管内の排水を除去したい時には、逆止弁部の上流側の挿入部から押上げシャフトを挿入し、前記シャフトを操作することで弁体を押し上げて圧送管の排水をタンク側へ逆流させる。なお、圧送ポンプ部の停止時において、挿入部には、加圧された排水がないため、押上げシャフトを挿入する際も、挿入部から排水が噴き出すことは無い。
よって、圧送管の残水を容易に、衛生的に除去することができる。また、圧送管の流路を狭めたり、排水流路中に障害や突起が無いため、排水中に含まれる人毛や、汚物中に含まれる繊維質やトイレットペーパーが引っかかり圧送管が詰まることは無い。さらに何度でも使用できる。
【００１２】
排水器具からの排水を貯留できるタンクと、該タンク内の排水を外部に送り出す圧送ポンプ部と、一端が圧送ポンプ部に連通し、他端が圧送ポンプ部より上方で大気開放された圧送管と、前記圧送ポンプ部と前記圧送管を接続する逆止弁部とを備えた圧送排水装置において、
前記逆止弁部は、前記圧送ポンプ部と前記圧送管を連通する連通路と、前記連通路の圧送管側の連通口周囲に設けた弁座と、前記圧送ポンプ部駆動時の圧送された排水により前記連通口の開放方向に移動し、前記圧送ポンプ部停止時の逆流する排水の圧力により前記弁座に当接して前記連通口を閉塞する弁体と、一端を前記弁体より下流側の逆止弁部に接続し、他端を前記タンクに接続したバイパス管と、前記バイパス管を開閉できる開閉部を備えたことを特徴とする圧送排水装置。
通常使用時は、前記同様弁体は、排水をスムーズに通過させ、圧送管に残留した排水の逆流を防ぐ。なお、バイパス管の開閉部は閉じている。
圧送管内の排水を除去したい時には、逆止弁部の下流側に接続したバイパス管の開閉部を開き、圧送管内に残留した排水がバイパス管を通過してタンク内に流れ込む。
よって、圧送管の残水を容易に、衛生的に除去することができる。また、圧送管の流路を狭めたり、排水流路中に障害や突起が無いため、排水中に含まれる人毛や、汚物中に含まれる繊維質やトイレットペーパーが引っかかり圧送管が詰まることは無い。さらに何度でも使用できる。
【００１３】
【発明の実施の形態】
以下図面に沿って発明内容を説明する。
図１に本発明に係る圧送排水装置の一実施例を示す。地中に埋設されたマス１より床面２が低い地下室３には、排水器具である大便器４が設置され、大便器４の後方に圧送排水装置１０が配置されている。圧送排水装置１０は、大便器４からの排水を貯留できるタンク１１と、大便器４と接続できる流入口１２と、タンク１１に内蔵され、溜まった排水を圧送する圧送ポンプ部１３と、タンク１１に溜まった排水の量に応じて圧送ポンプ部１３の稼動を制御する水位スイッチ１９と、大便器４から流入する汚物やペーパーなどの固形物を粉砕する圧送ポンプ部１３の上に配置されたカッター１７と、カッター１７の周囲を覆い粉砕された固形物を濾過する穴が複数開いたスクリーン１８と、タンク１１内の正圧・負圧を逃がす通気部１５と、マス１に一端を開放し、他端が圧送ポンプ部１３に連通した圧送管１６と、圧送管１６と圧送ポンプ部１３を接続できる逆止弁部２０を備えている。
逆止弁部２０は、図２（ａ）およびその断面図（ｂ）に示すように、両端に圧送ポンプ部１３を接続できる上流接続部２２と、圧送管１６を接続できる下流接続部２３と、圧送ポンプ部１３と圧送管１６とを連通する連通路２４と、連通路２４の圧送管側の連通口２５周囲に設けた弁座２６と、弁体固定部２９に嵌合した周動部２７を備えたスイング式の弁体２８と、弁体２８の下流側に接続された伝達手段である紐３１と、紐３１を巻き取るボビン３２と、ボビン３２の回転軸を固定できるボビン収納室３３と、ボビン３２を外部から回転操作できる回転操作部３４で構成される。紐３１は、弁体２８が実線で示すように閉じている状態でややたるむ程度の長さに調整してある。
【００１４】
本実施例に係る圧送排水装置の動作を以下説明する。
通常使用時において、図１の大便器４からの排水は、流入口１２を通って、タンク１１内のスクリーン１８に流れ込む。スクリーン１８の穴径以上の汚物はスクリーン１８内に残留し、穴径以下の汚物と排水はタンク１１の下方に流下する。
排水がタンク１１に流入し、水位が上昇すると、水位スイッチ１９が入り、圧送ポンプ部１３が稼働し、排水を圧送する。同時にカッター１７が回転し、スクリーン１８に残留した汚物は粉砕され、粉砕された汚物は、スクリーン１８の穴を通過し、排水とともに圧送ポンプ部１３によって逆止弁部２０に圧送される。
【００１５】
図２（ｂ）に示すように、逆止弁部２０では、圧送された排水によって、弁体２８は、図の破線で示すように、周動部２７を軸に連通口２５の開放方向に押し上げられる。この時、逆止弁部２０内の排水流路は十分確保され、さらに排水流路に障害物も無いため、排水に含まれる汚物やペーパーなどの固形物、または人毛は、スムーズに流れる。なお紐３１は大きくたるんでいる。
【００１６】
図１に戻り、逆止弁部２０を通過した排水は、圧送管１６を重力に逆らって流れ、マス１に放流され、図示しない下水管へと流下する。タンク１１内の水位が低下し、水位スイッチ１９が切れると、圧送ポンプ部１３が停止する。同時に圧送管１６内の排水が重力によってタンク１１側に逆流しようとするが、この逆流しようとする排水の流れによって、図２（ｂ）の実線で示すように弁体２８は、弁座２６に当接し、連通口２５を閉塞し、圧送管１６内の排水の逆流を防止する。紐３１はややたるむ程度である。
図１に戻り、この結果、圧送管１６内には、マス１に開口した高さまで排水が残留する。
【００１７】
さて、逆止弁部２０が無い場合を仮定すると、圧送ポンプ部１３が停止すると、圧送管１６内に残留した排水がタンク１１側に逆流し、タンク１１内の排水が増加し、再び水位スイッチ１９が入り、圧送ポンプ部１３が稼動する。圧送された排水が圧送管１６を通り、マス１に到達すると同時に再度圧送ポンプ部１３が停止し、この圧送管１６内の排水がタンク１１に逆流する。このように圧送ポンプ部１３の稼動と停止を繰返してしまう。よって、本圧送排水装置１０には、逆止弁部２０が必要であり、圧送管１６には排水が残留することとなる。
【００１８】
一方、圧送ポンプ部１３のメンテナンスや交換、または圧送排水装置１０の撤去の際には、まず、圧送ポンプ部１３が稼動できる状態であれば、大便器４から清水を数回流し、タンク１１の内部や圧送管１６内をできるだけ清水に置換する。次に、圧送ポンプ部１３の電源を抜き、圧送管１６内に残留した排水をタンク１１側に逆流させる。最後に、逆止弁部２０と圧送ポンプ部１３を切り離し、大便器４と流入口１２を切り離し、タンク１１を独立さる。これにより、タンク１１の内蔵物である圧送ポンプ部１３のメンテナンスや交換、圧送排水装置１０の撤去などが可能となる。
【００１９】
以下に圧送管１６内の排水をタンク１１側に逆流させる方法を示す。図２の回転操作部３４を回転させ、ボビン３２に紐３１を巻き付けていく。これにより、紐３１の先端に接続された弁体２８は、圧送管１６に残留した排水の圧力に逆らって、周動部２７を軸に弁座２６から離れ、連通口２５を開放状態にさせる。これにより、圧送管１６に残留した排水は、弁体２８と連通口２５の隙間を通って、タンク側に逆流し、圧送管１６内に残留した排水を抜くことができる。
【００２０】
上記説明からわかるように、本実施例に係る圧送排水装置１０においては、圧送管１６内に残留した排水が、圧送排水装置１０の流路を通過して、タンク１１に戻されるため、外部へ飛び散ることは無く衛生的である。また、その際に回転操作部３４を操作するだけで良いため簡単である。また、回転操作部３４を逆回転させて紐３１を初期の長さに戻せば、再び逆止弁部２０として使用できるため、施工面やコスト面で有利である。さらに、逆止弁部２０において、圧送された排水の流路を狭めたり、排水流路中に障害物や突起が無いため、排水中に含まれる人毛や、汚物中に含まれる繊維質やトイレットペーパーが引っかかることはなく、逆止弁部２０での詰まりが防げ、信頼性が高い。
【００２１】
以上、本発明の一実施例を説明したが、本発明は上記実施例に限定されない。以下に別の形態の圧送排水装置の逆流防止弁の構造と、通常使用時の動作、およびメンテナンスなどで圧送管内の排水を逆流させる動作を示す。なお、同じ構成部品には、同一符号を付して、その説明を省略する。
【００２２】
図３（ａ）およびその断面図（ｂ）に示すように、本発明の圧送排水装置の逆止弁部４０は、圧送ポンプ部１３を接続できる上流接続部４１と、圧送管を接続できる下流接続部４２と、下流接続部４２の先端に備えられたスイング式の弁体４３と、上流接続部４１と下流接続部４２の間にひだ部４４を備えた弾性体の連結管４５と、ひだ部４４を内径側に締めつけるリング４６とからなる。なお、口径調整手段とは、ひだ部４４を備えた連結管４５とリング４５をさす。
通常使用時において、圧送ポンプ部１３が停止している場合は、リング４６に締めつけられたひだ部４４が連通口と弁座の役割を果たし、弁体４３は、圧送管１６に残流した排水の圧力によって、ひだ部４４と当接して、圧送管１６内の排水の逆流を防いでいる。圧送ポンプ部１３が稼動すると、図３（ｂ）の破線で示すように、弁体４３は圧送された排水に押し上げられて開放方向に移動する。この時逆止弁部４０の排水流路は十分確保されている。
メンテナンスなどで圧送管１６内に残留した排水を抜く場合は、リング４６をはずし、図中の一点破線で示すようにひだ部４４を外側へ膨らませる。弁体４３は圧送管１６内に残留した排水の圧力で図中の一点破線で示すように上流側に移動し、圧送管１６内に残留した排水は弁体４３と連結管４５にできた隙間を通って、図示しないタンク側に逆流する。
【００２３】
または、図４（ａ）およびその断面図（ｂ）に示すように、本発明の圧送排水装置の逆止弁部５０は、圧送ポンプ部１３を接続する上流接続部５２と、圧送管１６を接続する下流接続部５３と、圧送ポンプ部１３と圧送管１６を連通する連通路５４と、連通路５４の圧送管１６側の連通口５５周囲に設けた弁座５６と、先端に膨張部５９が付いた案内棒５８を有し、弁座５６と当接するリフト式の弁体５７と、を備えている。さらに、逆止弁部５０は、連通口５５より下流が９０度曲がったエルボ型であり、曲り部には、案内棒５８を上下方向に移動させ、中間に伸縮性の蛇腹部６１を有し、蛇腹部６１の直上に膨張部５９を引っかけるストッパ６２を有したガイド部６０が備えられている。
通常使用時において、圧送ポンプ部１３が停止している時は、弁体５７が弁座５６に当接しており、圧送管１６内の排水が逆流するのを防止している。圧送ポンプ部１３が稼動時すると、圧送された排水によって、弁体５７は、案内棒５８をガイド部６０に滑らせながら、図４（ｂ）の破線で示す位置まで移動し、排水流路を十分確保する。
圧送管１６内に残留した排水を抜く場合は、図３（ｂ）の蛇腹部６１が伸び切る程度までガイド部を上方に引っ張り上げる。その際に、ストッパ６２が膨張部５９を引っかけ、弁体５７を弁座５６から離し、連通口５５を開放させることができ、圧送管１６内の排水はタンク側へ逆流する。
【００２４】
または、図５に示すように、本発明の圧送排水装置の逆止弁部７０は、圧送ポンプ部１３を接続できる上流接続部７２と、圧送管１６を接続できる下流接続部７３と、圧送ポンプ部１３と圧送管１６とを連通する連通路７４と、連通路７４の圧送管１６側の連通口７５周囲に設けた弁座７６と、弁体固定部７９に嵌合した周動部７７を備えたスイング式の弁体７８と、弁体７８に内蔵され、下流側をＳ極、上流側をＮ極とした円盤状の永久磁石６５と、連通路７４に内蔵され、上流側から見て時計周りに巻かれたコイル６６から成る。コイル６６の両先端６７ａ、６７ｂは逆止弁部７０の外部に取り出されている。
通常使用時において、弁体７８は、図中破線で示すように、圧送された排水で開放方向に移動し、圧送ポンプ部１３の停止時には、弁体７８が弁座７６と当接し圧送管１６内の排水の逆流を防ぐ。
圧送管１６内に残留した排水を抜く場合は、コイル６６の先端６７ａがプラス、先端６７ｂがマイナスとなるように電圧をかけ、コイル６６の下流方向がＮ極となる電磁石を作り出す。この電磁石となったコイル６６と、永久磁石６５が反発することで、永久磁石６５を内蔵した弁体７８が弁座７６から離れ、圧送管１６内に残留した排水は、タンク側に逆流する。
【００２５】
または、図６に示すように、本発明の圧送排水装置の逆止弁部８０は、圧送ポンプ部１３を接続できる上流接続部８２と、圧送管１６を接続できる下流接続部８３と、圧送ポンプ部１３と圧送管１６とを連通する連通路８４と、連通路８４の圧送管１６側の連通口８５周囲に設けた弁座８６と、弁体固定部８９に嵌合した周動部８７を備えたスイング式の弁体８８と、逆止弁部８０の上流側で周動部８７の反対側に備えられ、図７に示すクランク型のシャフト９０を挿入できる挿入口９１と、逆止弁部８０の内壁で挿入口９１とは対抗した面に設けたシャフト９０の軸を受ける軸受け穴９２と、挿入口９１を塞ぐキャップ９３と、から成る。
通常使用時においては、挿入口９１はキャップ９３で塞がれており、弁体８８は、圧送された排水で開放方向に移動し、圧送ポンプ部１３の停止時には、弁体８８が弁座８６と当接し、圧送管１６内の排水が逆流するのを防ぐ。
圧送管１６内に残留した排水を抜く場合は、まずキャップ９３を挿入口９１からはずす。この時、弁体８８の上流側には正圧の排水が無いため、キャップ９３を開けても排水が外部に漏れることはない。次に図７のシャフト９０を、図８のように挿入口９１から挿入し、シャフト９０の軸を軸受け穴９２に入れる。次にシャフト９０と挿入口９１の隙間を塞ぐゴム状の栓９４をはめ込み、挿入口から排水が逆流しないようにする。最後にシャフト９０を図８の破線で示すように回転させ、弁体８８にシャフト９０の先端を押し当て、弁体８８を開放方向に移動させ、圧送管１６内に残留した排水をタンク側に逆流させる。
【００２６】
または、図９に示すように、本発明の圧送排水装置の逆止弁部１００は、圧送ポンプ部１３を接続できる上流接続部１０２と、圧送管１６を接続できる下流接続部１０３と、圧送ポンプ部１３と圧送管１６とを連通する連通路１０４と、連通路１０４の圧送管１６側の連通口１０５周囲に設けた弁座１０６と、弁体固定部１０９に嵌合する周動部１０７を備えたスイング式の弁体１０８と、弁体１０８の下流側の逆止弁部１００の圧送流路に貫通した取出し口１１０と、一端を取出し口１１０に接続し、他端を図１のタンク１１に接続したバイパス管１１１と、バイパス管１１１を開閉できる開閉クリップ１１２と、から成る。
通常使用時においては、弁体１０８は、圧送された排水で開放方向に移動し、圧送ポンプ部停止時には、弁体１０８が弁座１０６と当接し圧送管１６内の排水の逆流を防ぐ。なお、バイパス管１１１は開閉クリップ１１２によって、閉塞されており、排水が流れることは無い。
圧送管１６内に残留した排水を抜く場合は、開閉クリップ１１２をバイパス管１１１から外し、取出し口１１０と図示しないタンクを連通させる。これにより、圧送管１６内に残留した排水は、バイパス管１１１を通過してタンク内に流れる事ができる。
【００２７】
上記実施例において、排水器具が大便器の場合の圧送排水装置を説明したが、本発明はこれに限らず、排水器具は、小便器、浴槽、洗面器、台所流し、洗濯機パンなどとしても良い。小便器、浴槽、洗面器、洗濯機パン、またはストレーナを具備した台所流しなどのあまり固形物が混入しない排水器具の場合は、図１のカッター１７やスクリーン１８を取り除いても良い。
【図面の簡単な説明】
【図１】本発明の圧送排水装置全体を示す概略図である。
【図２】本発明の逆止弁部を示した図である。
【図３】本発明の逆止弁部を示した図である。
【図４】本発明の逆止弁部を示した図である。
【図５】本発明の逆止弁部を示した図である。
【図６】本発明の逆止弁部を示した図である。
【図７】本発明の逆止弁部の弁体を開放するシャフトを示した正面図である。
【図８】本発明の逆止弁部にシャフトを挿入した断面図である。
【図９】本発明の逆止弁部を示した図である。
【図１０】従来の技術であるＳＦＡ社製の逆止弁部を示した断面図である。
【図１１】従来の技術であるＳＦＡ社製の逆止弁部の使用状況を示した概略図でる。
【符号の説明】
１０…圧送排水装置
１１…タンク
１３…圧送ポンプ部
１６…圧送管
２０，４０，５０，７０，８０，１００…逆止弁部
２８，４３，５７，７８，８８，１０８…弁体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pressure drainage device that pumps waste water from a drainage device and includes a backflow prevention valve.
[0002]
[Prior art]
The pressure drainage device has a pressure pump, water level detection switch and crushing device installed in the water tank, collects wastewater such as urine and remaining hot water in baths, washing and washing, etc. in the storage tank, operates the pressure pump, and at the same time In this device, the urine is crushed and the pulverized manure and waste water are pumped and discharged through a pressure feeding tube. Such a pressure drainage device is required in places where water is forced to be drained, such as a basement installed at a lower position than a sewer pipe or a building where the drain pipe cannot be inclined. Furthermore, in the future, it is expected to be frequently used in a system in which the diameter of the drain pipe is reduced to reduce the piping space, and a system in which the drain pipe is made flexible to improve workability and variability.
[0003]
On the other hand, since the pumping drainage device uses a motor and a cutter, there are inevitably more failures than the conventional gravity drainage system, and repair and replacement are necessary. Further, depending on the application, the pumping device is moved and removed more frequently than before, and the work of removing the tank and pumping tube is likely to occur. In this case, it is important to perform the work in a sanitary manner. In particular, manure and waste water should not be leaked outside the pressure-feed drainage device or drainage route.
[0004]
The SFA-made pressure feed drainage device SANI-PACK includes a tank for storing waste water, a pressure feed pump section for discharging the waste water in the tank to the outside, a pressure feed pipe for feeding waste water, the pressure feed pump section, and the pressure feed pipe. Is provided. As shown in FIG. 10, the check valve portion 120 includes an upstream connection portion 122 that connects the pressure feed pump portion 121, a downstream connection portion 124 that connects the pressure feed pipe 123, a valve body 125, and a downstream side of the valve body 125. The branch pipe 127 partitioned from the wall surface 126 of the drainage flow path is provided.
In the normal operation of the pumping / drainage apparatus, the drainage pumped from the pumping pump unit 121 pushes up the valve body 125 as shown by the broken line, passes through the pumping pipe 123, and flows out to the sewage pipe or the like ahead. When the pumping pump unit 121 is stopped, the valve body 125 is closed by drainage flowing backward from the pumping tube 123, and the drainage in the pumping tube 123 is prevented from flowing backward to the tank side. Therefore, the waste water remains in the pressure feeding pipe 123.
When removing the pressure drainage device and the pressure feed pipe, it is necessary to remove the waste water remaining in the pressure feed pipe. In that case, as shown in FIG. 11, a hole is made in the wall 126 that separates the branch pipe 127 provided in the check valve portion 120 and the drainage flow path with a needle, and drainage that is blown out by the pressure in the pressure feeding pipe 123 is prepared separately. It is supposed to be received by the container 128.
[0005]
[Problems to be solved by the invention]
However, in the above method, since the drainage is received by the container after the needle is inserted and pulled out, the drainage scatters around after setting the container after the needle is pulled out, which is very unsanitary. Moreover, it is necessary and troublesome to prepare a container separately. In addition, the check valve section once pierced with a needle becomes unusable and the check valve section needs to be replaced every time drainage of the pressure feed pipe is removed by simple repairs and inspections. It is also disadvantageous in terms of cost.
The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a pressure-feeding / draining device including a check valve that can sanitarily and easily remove wastewater remaining in a pressure-feeding pipe. There is.
[0006]
[Means for solving the problems and actions / effects]
In order to achieve the above object, a first aspect of the present invention provides a tank capable of storing drainage from a drainage device, a pumping pump unit for sending the drainage in the tank to the outside, one end communicating with the pumping pump, and the other end being a pumping pump. In the pressure-feeding and drainage device comprising the pressure-feeding pipe opened to the atmosphere above the section, and the pressure-feeding pump part and the check valve part connecting the pressure-feeding pipe,
The check valve part is pressure-fed when the pressure-feed pump part is driven, a communication path communicating the pressure-feed pump part and the pressure-feed pipe, a valve seat provided around a communication port on the pressure-feed pipe side of the communication path, and the pressure-feed pump part The valve body is moved by the drainage in the opening direction of the communication port, the valve body is in contact with the valve seat by the pressure of the backflowing drainage when the pumping pump is stopped, and the valve body is forcibly moved. And forced opening means for promoting back flow.
During normal use, wastewater flowing from the drainage device is stored in a tank, further pumped by a pressure pump in the tank, passes through the check valve communication path, pushes up the valve body, and the outlet is above the pump. Water is sent to a pressure feed pipe that is open to the atmosphere, and flows to a drainage channel downstream of the pressure feed pipe. When the pumping pump stops, the drainage in the pumping pipe tends to flow back to the pumping pump due to gravity, but the valve body comes into contact with the valve seat due to the pressure of the drainage to prevent the drainage from flowing back.
When removing the drainage in the pumping pipe by repairing or removing the pumping drainage device, operate the forced opening means provided in the check valve section to forcibly move the valve body in the opening direction and drain the drainage in the pumping pipe. Is backflowed to the pressure pump side and stored in the tank.
As a result, the waste water remaining in the pressure feeding pipe returns to the tank without passing through other than the pressure feeding drainage device or the drainage path, and is therefore sanitary without being scattered outside. Moreover, it is simple because it is only necessary to operate the forced opening means. Further, when the forced opening means is returned to the original structure, it can be used again as a check valve, which is advantageous in terms of cost.
[0007]
In a preferred aspect of the present invention, the valve body is a swing type, and the forced opening means pulls the transmission means connected to the downstream side of the valve body and the transmission means from outside to open the communication port. It consists of an operation part. The transmission means here refers to an object such as a string, which easily bends when tension is not applied and has little elongation when tension is applied.
During normal use, the wastewater pumped by the pumping pump unit pushes up the swing-type valve body and smoothly passes through the check valve unit. At this time, the swing type valve element does not narrow the drainage flow path. When the pumping pump stops, the drainage of the pumping pipe tends to flow backward, but the swing-type valve element immediately contacts the valve seat, closes the communication port, and reliably prevents the drainage from flowing backward. Further, the transmission means connected to the downstream side of the valve body hardly participates in the opening and closing of the valve body.
When removing the waste water in the pressure feed pipe, the transmission means having one end connected to the valve body is pulled by the operating portion, and the valve body is moved in the opening direction. Thereby, the residual water in the pressure feeding pipe flows down into the tank.
Therefore, the residual water of the pressure feeding tube can be easily and hygienically removed. Further, it can be used over and over again, which is advantageous in terms of cost. In addition, since there is no obstruction or protrusion in the drainage channel, the pumping tube is not clogged by the human hair contained in the drainage, the fibers contained in the waste, or the toilet paper. .
[0008]
In a preferred aspect of the present invention, the valve body is a swing type, and the forced opening means is a diameter adjusting means capable of adjusting the diameter of the communication opening of the valve seat.
During normal use, as described above, the swing-type valve element opens without narrowing the drainage flow path, and reliably prevents the backflow of drainage water remaining in the pressure feeding pipe.
When removing the drainage in the pressure feed pipe, if the diameter of the valve seat is widened by the diameter adjustment means and is made larger than the diameter of the valve body, the valve body opens in the upstream direction due to the pressure of the residual water in the pressure feed pipe, Waste water remaining in the tank flows back to the tank side at once.
Therefore, the residual water of the pressure feeding tube can be easily and hygienically removed. In addition, since there are no obstacles or protrusions in the drainage flow path, the pumping pipe is not clogged by the human hair contained in the drainage, the fibers contained in the waste, or the toilet paper. No. You can use it again and again.
[0009]
In a preferred aspect of the present invention, the check valve portion is an elbow type bent 90 degrees downstream from the communication port, the valve body is a lift type having a guide rod on the downstream side, and the elbow type check valve The portion has a guide portion for guiding the guide rod on the wall surface of the bent portion, and the forced opening means is an extendable structure provided in the guide portion.
During normal use, the pumped waste water pushes up the lift-type valve body, passes through the elbow check valve portion, changes the flow direction in a substantially right angle direction, and flows to the pressure feed pipe. The lift-type valve body has a guide rod, and the guide rod moves along the guide portion of the check valve portion and does not narrow the pressure-feed passage. When the pumping pump stops, the valve body moves in the closing direction, preventing the backflow of drainage.
When removing the drainage water in the pressure feeding pipe, it is possible to pull the expansion / contraction part of the guide part and simultaneously lift the valve body through the guide rod to return the wastewater in the pressure feeding pipe to the tank side.
Therefore, the residual water of the pressure feeding tube can be easily and hygienically removed. In addition, since there are no obstacles or protrusions in the drainage flow path, the pumping pipe is not clogged by the human hair contained in the drainage, the fibers contained in the waste, or the toilet paper. No. You can use it again and again.
[0010]
In a preferred aspect of the present invention, the forced opening means comprises a permanent magnet built in the valve body and an electromagnet built in the valve seat and arranged to repel the permanent magnet when conducting electricity. The pressure-feed drainage device according to claim 1, wherein
During normal use, similarly to the above, the valve body may be of a swing type or a lift type, allowing the drainage to pass smoothly and preventing the back flow in the pressure feed pipe when the pressure feed pump stops.
When you want to remove the drainage in the pumping pipe, voltage is applied to the electromagnet housed in the valve seat, repelling it with the permanent magnet of the valve body, the valve body moves downstream by that force, and the drainage in the pumping pipe is on the tank side Regurgitate.
Therefore, the residual water of the pressure feeding tube can be easily and hygienically removed. In addition, since there are no obstacles or protrusions in the drainage flow path, the pumping pipe is not clogged by the human hair contained in the drainage, the fibers contained in the waste, or the toilet paper. No. You can use it again and again.
[0011]
In a preferred aspect of the present invention, the forced opening means includes a push-up shaft that can push up the valve body, and an insertion portion that is provided in the check valve portion upstream of the valve seat and that can be attached to and detached from the shaft. It is characterized by comprising.
During normal use, the valve body smoothly passes the drainage and prevents the backflow of the drainage remaining in the pressure feeding pipe.
When it is desired to remove the drainage in the pressure feed pipe, the push-up shaft is inserted from the insertion part on the upstream side of the check valve part, and the valve body is pushed up by operating the shaft to cause the drainage of the pressure feed pipe to flow backward to the tank side. In addition, when the pumping pump unit is stopped, since there is no pressurized drainage in the insertion unit, drainage does not blow out from the insertion unit when the push-up shaft is inserted.
Therefore, the residual water of the pressure feeding tube can be easily and hygienically removed. In addition, since there are no obstacles or protrusions in the drainage flow path, the pumping pipe is not clogged by the human hair contained in the drainage, the fibers contained in the waste, or the toilet paper. No. You can use it again and again.
[0012]
A tank capable of storing drainage from the drainage device, a pumping pump unit for sending the drainage in the tank to the outside, a pumping tube having one end communicating with the pumping pump unit and the other end being open to the atmosphere above the pumping pump unit In the pressure-feed drainage device comprising the pressure-feed pump portion and a check valve portion that connects the pressure-feed pipe,
The check valve part is pressure-fed when the pressure-feed pump part is driven, a communication path communicating the pressure-feed pump part and the pressure-feed pipe, a valve seat provided around a communication port on the pressure-feed pipe side of the communication path, A valve body that moves in the opening direction of the communication port due to drainage, closes the communication port by contacting the valve seat by the pressure of the backflowing drainage when the pumping pump is stopped, and one end downstream of the valve body A pressure feed / drainage device comprising a bypass pipe connected to the check valve portion and having the other end connected to the tank, and an opening / closing portion capable of opening and closing the bypass pipe.
During normal use, the valve body smoothly passes the drainage and prevents the backflow of the drainage remaining in the pressure feeding pipe. The opening / closing part of the bypass pipe is closed.
When it is desired to remove the waste water in the pressure feeding pipe, the opening and closing part of the bypass pipe connected to the downstream side of the check valve part is opened, and the waste water remaining in the pressure feeding pipe flows into the tank through the bypass pipe.
Therefore, the residual water of the pressure feeding tube can be easily and hygienically removed. In addition, since there are no obstacles or protrusions in the drainage flow path, the pumping pipe is not clogged by the human hair contained in the drainage, the fibers contained in the waste, or the toilet paper. No. You can use it again and again.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The invention will be described below with reference to the drawings.
FIG. 1 shows an embodiment of a pressure drainage device according to the present invention. A toilet 4 as a drainage device is installed in a basement 3 whose floor surface 2 is lower than a mass 1 buried in the ground, and a pressure drainage device 10 is arranged behind the toilet 4. The pressure drainage device 10 includes a tank 11 that can store drainage from the toilet 4, an inlet 12 that can be connected to the toilet 4, a pumping pump unit 13 that is built in the tank 11 and pumps the accumulated drainage, and a tank 11. A water level switch 19 that controls the operation of the pumping pump unit 13 according to the amount of drainage accumulated in the tank, and a cutter disposed on the pumping pump unit 13 that crushes solids such as filth and paper flowing from the toilet 4 17, a screen 18 having a plurality of holes for filtering the solid matter crushed and covering the periphery of the cutter 17, an air vent 15 for releasing positive and negative pressure in the tank 11, and one end opened to the mass 1, The other end is provided with a pressure feed pipe 16 that communicates with the pressure feed pump section 13, and a check valve section 20 that can connect the pressure feed pipe 16 and the pressure feed pump section 13.
As shown in FIG. 2A and its cross-sectional view (b), the check valve portion 20 includes an upstream connection portion 22 that can connect the pressure feed pump portion 13 to both ends, and a downstream connection portion 23 that can connect the pressure feed pipe 16. The communication passage 24 that communicates the pressure feed pump section 13 and the pressure feed pipe 16, the valve seat 26 that is provided around the communication port 25 on the pressure feed pipe side of the communication path 24, and the peripheral portion that is fitted to the valve body fixing portion 29 27, a swing type valve element 28, a string 31 as a transmission means connected to the downstream side of the valve element 28, a bobbin 32 for winding the string 31, and a bobbin storage chamber in which the rotation shaft of the bobbin 32 can be fixed 33 and a rotation operation unit 34 that can rotate the bobbin 32 from the outside. The string 31 is adjusted to a length that is slightly slack when the valve element 28 is closed as indicated by a solid line.
[0014]
The operation of the pressure drainage device according to this embodiment will be described below.
During normal use, drainage from the toilet 4 in FIG. 1 flows into the screen 18 in the tank 11 through the inlet 12. The filth larger than the hole diameter of the screen 18 remains in the screen 18, and the filth and drainage smaller than the hole diameter flow down below the tank 11.
When the wastewater flows into the tank 11 and the water level rises, the water level switch 19 is turned on, the pumping pump unit 13 is operated, and the wastewater is pumped. At the same time, the cutter 17 rotates and the filth remaining on the screen 18 is crushed, and the crushed filth passes through the hole of the screen 18 and is pumped to the check valve section 20 by the pumping pump section 13 together with the drainage.
[0015]
As shown in FIG. 2B, in the check valve portion 20, the valve body 28 is moved in the opening direction of the communication port 25 around the peripheral portion 27 as shown by the broken line in the drawing due to the discharged waste water. Pushed up. At this time, since the drainage flow path in the check valve portion 20 is sufficiently secured and there is no obstacle in the drainage flow path, solid matter such as filth and paper contained in the drainage, or human hair flows smoothly. The string 31 is greatly slack.
[0016]
Returning to FIG. 1, the waste water that has passed through the check valve portion 20 flows against the gravity pipe 16 against gravity, is discharged to the mass 1, and flows down to a sewer pipe (not shown). When the water level in the tank 11 falls and the water level switch 19 is turned off, the pumping pump unit 13 stops. At the same time, the waste water in the pressure feed pipe 16 tends to flow backward to the tank 11 due to gravity, and the valve body 28 is moved to the valve seat 26 as shown by the solid line in FIG. It abuts and closes the communication port 25 to prevent the backflow of drainage in the pressure feed pipe 16. The string 31 is slightly slack.
Returning to FIG. 1, as a result, drainage remains in the pressure feed pipe 16 to the height opened in the mass 1.
[0017]
Assuming that the check valve section 20 is not provided, when the pumping pump section 13 is stopped, the wastewater remaining in the pumping pipe 16 flows back to the tank 11 side, the drainage in the tank 11 is increased, and the water level switch is turned on again. 19 enters and the pumping pump unit 13 is operated. The pumped drainage passes through the pumping pipe 16 and reaches the mass 1, and at the same time, the pumping pump unit 13 is stopped again, and the drainage in the pumping pipe 16 flows back to the tank 11. In this way, the pumping pump unit 13 is repeatedly operated and stopped. Therefore, the pressure feeding / draining device 10 requires the check valve portion 20, and the drainage remains in the pressure feeding pipe 16.
[0018]
On the other hand, when maintaining or exchanging the pumping pump unit 13 or removing the pumping drainage device 10, first, if the pumping pump unit 13 can be operated, fresh water is flowed from the toilet 4 several times, The inside and the inside of the pressure feeding pipe 16 are replaced with fresh water as much as possible. Next, the power supply of the pressure feed pump unit 13 is disconnected, and the waste water remaining in the pressure feed pipe 16 is caused to flow backward to the tank 11 side. Finally, the check valve 20 and the pressure pump 13 are disconnected, the toilet 4 and the inlet 12 are disconnected, and the tank 11 is independent. As a result, maintenance and replacement of the pumping pump unit 13 that is built in the tank 11, removal of the pumping drainage device 10, and the like are possible.
[0019]
Hereinafter, a method of causing the wastewater in the pressure feeding pipe 16 to flow backward to the tank 11 side will be described. 2 is rotated, and the string 31 is wound around the bobbin 32. As a result, the valve body 28 connected to the tip of the string 31 moves away from the valve seat 26 with the peripheral portion 27 as a shaft against the pressure of the drainage remaining in the pressure feed pipe 16 and opens the communication port 25. . As a result, the waste water remaining in the pressure feeding pipe 16 flows back to the tank side through the gap between the valve body 28 and the communication port 25, and the waste water remaining in the pressure feeding pipe 16 can be extracted.
[0020]
As can be seen from the above description, in the pressure drainage device 10 according to the present embodiment, the wastewater remaining in the pressure feed pipe 16 passes through the flow path of the pressure feed drainage device 10 and is returned to the tank 11. It is hygienic without splashing. In addition, it is simple because it is only necessary to operate the rotation operation unit 34 at that time. Moreover, since the rotation operation part 34 is reversely rotated and the string 31 is returned to the initial length, it can be used again as the check valve part 20, which is advantageous in terms of construction and cost. Furthermore, in the check valve portion 20, the flow path of the pumped drainage is narrowed, and since there are no obstacles or protrusions in the drainage path, the human hair contained in the drainage, the fiber contained in the filth, Toilet paper is not caught, clogging at the check valve portion 20 can be prevented, and reliability is high.
[0021]
As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example. The structure of the backflow prevention valve of another form of the pressure feeding / drainage apparatus, the operation during normal use, and the operation for causing the wastewater in the pressure feeding pipe to flow back during maintenance will be described below. In addition, the same code | symbol is attached | subjected to the same component and the description is abbreviate | omitted.
[0022]
As shown in FIG. 3 (a) and its cross-sectional view (b), the check valve portion 40 of the pressure feed / drainage device of the present invention has an upstream connection portion 41 to which a pressure feed pump portion 13 can be connected and a downstream to which a pressure feed pipe can be connected. A connecting portion 42, a swing type valve body 43 provided at the tip of the downstream connecting portion 42, an elastic connecting pipe 45 having a pleated portion 44 between the upstream connecting portion 41 and the downstream connecting portion 42, and pleats. It consists of a ring 46 that fastens the portion 44 to the inner diameter side. The diameter adjusting means refers to the connecting pipe 45 and the ring 45 provided with the folds 44.
When the pumping pump unit 13 is stopped during normal use, the pleat 44 fastened to the ring 46 serves as a communication port and a valve seat, and the valve body 43 is a drainage remaining in the pumping tube 16. Due to this pressure, it contacts the pleat portion 44 to prevent the backflow of drainage in the pressure feed pipe 16. When the pumping pump unit 13 is operated, the valve body 43 is pushed up by the pumped waste water and moves in the opening direction, as indicated by a broken line in FIG. At this time, the drainage flow path of the check valve portion 40 is sufficiently secured.
When draining the drainage remaining in the pressure feeding pipe 16 for maintenance or the like, the ring 46 is removed, and the pleat 44 is inflated to the outside as indicated by a dashed line in the figure. The valve body 43 moves to the upstream side as shown by a one-dot broken line in the figure due to the pressure of the waste water remaining in the pressure feed pipe 16, and the waste water remaining in the pressure feed pipe 16 is a gap formed in the valve body 43 and the connecting pipe 45. And then flows back to the tank side (not shown).
[0023]
Alternatively, as shown in FIG. 4A and its cross-sectional view (b), the check valve portion 50 of the pressure feed / drainage device of the present invention includes an upstream connection portion 52 that connects the pressure feed pump portion 13 and the pressure feed pipe 16. A downstream connection portion 53 to be connected, a communication passage 54 communicating the pressure feed pump portion 13 and the pressure feed pipe 16, a valve seat 56 provided around the communication port 55 on the pressure feed pipe 16 side of the communication passage 54, and an expansion portion 59 at the tip. And a lift-type valve element 57 that abuts against the valve seat 56. Further, the check valve portion 50 is an elbow type that is bent 90 degrees downstream from the communication port 55. The bent portion has a guide rod 58 moved in the vertical direction, and has an elastic bellows portion 61 in the middle. A guide portion 60 having a stopper 62 for hooking the expansion portion 59 is provided immediately above the bellows portion 61.
During normal use, when the pumping pump unit 13 is stopped, the valve body 57 is in contact with the valve seat 56 to prevent the drainage in the pumping pipe 16 from flowing backward. When the pumping pump unit 13 is in operation, the valve body 57 moves to the position indicated by the broken line in FIG. 4B while sliding the guide rod 58 on the guide unit 60 by the pumped drainage. Secure enough.
When draining the waste water remaining in the pressure feeding pipe 16, the guide part is pulled upward until the bellows part 61 of FIG. At that time, the stopper 62 catches the expansion part 59, the valve body 57 can be separated from the valve seat 56, the communication port 55 can be opened, and the waste water in the pressure feed pipe 16 flows backward to the tank side.
[0024]
Alternatively, as shown in FIG. 5, the check valve portion 70 of the pressure feed / drainage device of the present invention includes an upstream connection portion 72 to which the pressure feed pump portion 13 can be connected, a downstream connection portion 73 to which the pressure feed pipe 16 can be connected, and a pressure feed pump. A communication passage 74 that connects the portion 13 and the pressure feeding pipe 16, a valve seat 76 provided around the communication port 75 on the pressure feeding pipe 16 side of the communication passage 74, and a peripheral portion 77 fitted to the valve body fixing portion 79. The swing-type valve body 78 provided, the disc-shaped permanent magnet 65 built in the valve body 78, with the S pole on the downstream side and the N pole on the upstream side, and the communication passage 74, are viewed from the upstream side. It consists of a coil 66 wound clockwise. Both ends 67 a and 67 b of the coil 66 are taken out of the check valve portion 70.
During normal use, the valve body 78 moves in the opening direction by the pumped waste water as indicated by the broken line in the drawing. When the pumping pump unit 13 is stopped, the valve body 78 abuts the valve seat 76 and presses the pipe 16. Prevents backflow of drainage inside.
When draining the waste water remaining in the pressure feeding pipe 16, a voltage is applied so that the tip 67a of the coil 66 is positive and the tip 67b is negative, and an electromagnet in which the downstream direction of the coil 66 is N-pole is created. The electromagnet 66 and the permanent magnet 65 are repelled, so that the valve body 78 containing the permanent magnet 65 is separated from the valve seat 76 and the waste water remaining in the pressure feed pipe 16 flows backward to the tank side.
[0025]
Alternatively, as shown in FIG. 6, the check valve portion 80 of the pressure feed / drainage device of the present invention includes an upstream connection portion 82 to which the pressure feed pump portion 13 can be connected, a downstream connection portion 83 to which the pressure feed pipe 16 can be connected, and a pressure feed pump. A communication passage 84 communicating the portion 13 and the pressure feed pipe 16, a valve seat 86 provided around the communication port 85 on the pressure feed pipe 16 side of the communication passage 84, and a peripheral portion 87 fitted to the valve body fixing portion 89. A swing-type valve body 88, an insertion port 91 provided on the upstream side of the check valve portion 80 and on the opposite side of the circumferential movement portion 87, into which the crank shaft 90 shown in FIG. 7 can be inserted, and a check valve The inner wall of the portion 80 includes a bearing hole 92 for receiving the shaft 90 provided on the surface facing the insertion port 91 and a cap 93 for closing the insertion port 91.
During normal use, the insertion port 91 is closed with a cap 93, and the valve body 88 moves in the opening direction by the pumped waste water. When the pumping pump unit 13 is stopped, the valve body 88 is in the valve seat 86. To prevent the drainage of the pressure feed pipe 16 from flowing backward.
In order to drain the water remaining in the pressure feed pipe 16, the cap 93 is first removed from the insertion port 91. At this time, since there is no positive pressure drainage upstream of the valve body 88, drainage does not leak to the outside even if the cap 93 is opened. Next, the shaft 90 of FIG. 7 is inserted from the insertion port 91 as shown in FIG. 8, and the shaft of the shaft 90 is inserted into the bearing hole 92. Next, a rubber plug 94 that closes the gap between the shaft 90 and the insertion port 91 is fitted so that the drainage does not flow backward from the insertion port. Finally, the shaft 90 is rotated as indicated by the broken line in FIG. 8, the tip of the shaft 90 is pressed against the valve body 88, the valve body 88 is moved in the opening direction, and the waste water remaining in the pressure feed pipe 16 is moved to the tank side. Back flow.
[0026]
Alternatively, as shown in FIG. 9, the check valve portion 100 of the pressure feed / drainage device of the present invention includes an upstream connection portion 102 to which the pressure feed pump portion 13 can be connected, a downstream connection portion 103 to which the pressure feed pipe 16 can be connected, and a pressure feed pump. A communication passage 104 that connects the portion 13 and the pressure feed pipe 16, a valve seat 106 provided around the communication port 105 on the pressure feed pipe 16 side of the communication passage 104, and a peripheral portion 107 that fits the valve body fixing portion 109. The swing-type valve body 108 provided, the take-out port 110 penetrating the pressure feed passage of the check valve portion 100 downstream of the valve body 108, one end is connected to the take-out port 110, and the other end is connected to the tank of FIG. 11 and a bypass pipe 111 that can open and close the bypass pipe 111.
During normal use, the valve body 108 moves in the opening direction with the pumped waste water, and when the pump pump is stopped, the valve body 108 abuts the valve seat 106 to prevent the backflow of drainage in the pumping pipe 16. Note that the bypass pipe 111 is closed by the opening / closing clip 112 so that drainage does not flow.
When draining the waste water remaining in the pressure feed pipe 16, the opening / closing clip 112 is removed from the bypass pipe 111, and the take-out port 110 and a tank (not shown) are connected. Thereby, the waste water remaining in the pressure feeding pipe 16 can flow through the bypass pipe 111 and into the tank.
[0027]
In the above embodiment, the pressure drainage device when the drainage device is a toilet bowl has been described, but the present invention is not limited to this, and the drainage device may be a urinal, a bathtub, a washbasin, a kitchen sink, a washing machine pan, etc. good. In the case of a drainage device that does not contain much solid matter such as a urinal, a bathtub, a washbasin, a washing machine pan, or a kitchen sink equipped with a strainer, the cutter 17 and the screen 18 of FIG. 1 may be removed.
[Brief description of the drawings]
FIG. 1 is a schematic view showing the entire pressure drainage device of the present invention.
FIG. 2 is a view showing a check valve portion of the present invention.
FIG. 3 is a view showing a check valve portion of the present invention.
FIG. 4 is a view showing a check valve portion of the present invention.
FIG. 5 is a view showing a check valve portion of the present invention.
FIG. 6 is a view showing a check valve portion of the present invention.
FIG. 7 is a front view showing a shaft for opening the valve body of the check valve portion of the present invention.
FIG. 8 is a sectional view in which a shaft is inserted into the check valve portion of the present invention.
FIG. 9 is a view showing a check valve portion of the present invention.
FIG. 10 is a cross-sectional view showing a conventional check valve portion manufactured by SFA.
FIG. 11 is a schematic view showing the state of use of a check valve portion manufactured by SFA, which is a conventional technique.
[Explanation of symbols]
10 ... Pressure drainage device
11 ... Tank
13 ... Pressure pump section
16 ... Pressure feeding tube
20, 40, 50, 70, 80, 100 ... check valve section
28, 43, 57, 78, 88, 108 ... valve body

Claims

排水器具からの排水を貯留できるタンクと、該タンク内の排水を外部に送り出す圧送ポンプ部と、一端が圧送ポンプ部に連通し、他端が圧送ポンプ部より上方で大気開放された圧送管と、前記圧送ポンプ部と前記圧送管を接続する逆止弁部とを備えた圧送排水装置において、
前記逆止弁部は、前記圧送ポンプ部と前記圧送管を連通する連通路と、前記連通路の圧送管側の連通口周囲に設けた弁座と、前記圧送ポンプ部駆動時の圧送された排水により前記連通口の開放方向に移動し、前記圧送ポンプ部停止時の逆流する排水の圧力により前記弁座に当接して前記連通口を閉塞する弁体と、前記弁体を強制的に移動させ逆流を促す強制開口手段と、を備えたことを特徴とする圧送排水装置。A tank capable of storing drainage from the drainage device, a pumping pump unit for sending the drainage in the tank to the outside, a pumping tube having one end communicating with the pumping pump unit and the other end being open to the atmosphere above the pumping pump unit In the pressure-feed drainage device comprising the pressure-feed pump portion and a check valve portion that connects the pressure-feed pipe,
The check valve part is pressure-fed when the pressure-feed pump part is driven, a communication path communicating the pressure-feed pump part and the pressure-feed pipe, a valve seat provided around a communication port on the pressure-feed pipe side of the communication path, The valve body is moved by the drainage in the opening direction of the communication port, the valve body is in contact with the valve seat by the pressure of the backflowing drainage when the pumping pump is stopped, and the valve body is forcibly moved. And a forced-opening drainage device characterized by comprising forced opening means for promoting back flow.

前記弁体をスイング式とし、前記強制開口手段は、前記弁体の下流側に接続された伝達手段と、前記伝達手段を外部から引っ張り前記連通口を開放させる操作部から成ることを特徴とする請求項１に記載の圧送排水装置。The valve body is a swing type, and the forcible opening means includes a transmission means connected to the downstream side of the valve body and an operation unit that pulls the transmission means from the outside to open the communication port. The pressure-feed drainage device according to claim 1.

前記弁体をスイング式とし、前記強制開口手段は、前記弁座を設けた連通口の口径を調整できる口径調整手段としたことを特徴とする請求項１に記載の圧送排水装置。2. The pressure drainage device according to claim 1, wherein the valve body is a swing type, and the forced opening means is a diameter adjusting means capable of adjusting a diameter of a communication port provided with the valve seat.

前記逆止弁部は前記連通口より下流を９０度曲げたエルボ型とし、前記弁体は下流側に案内棒を有したリフト式とし、前記エルボ型の逆止弁部は曲り部の壁面に前記案内棒をガイドするガイド部を有し、前記強制開口手段は、前記ガイド部に設けた伸縮構造であることを特徴とする請求項１に記載の圧送排水装置。The check valve portion is an elbow type bent 90 degrees downstream from the communication port, the valve body is a lift type having a guide rod on the downstream side, and the elbow check valve portion is formed on the wall surface of the bent portion. The pressure-feeding / draining device according to claim 1, further comprising a guide portion that guides the guide rod, wherein the forced opening means is a telescopic structure provided in the guide portion.

前記強制開口手段は、前記弁体に内蔵された永久磁石と、前記弁座に内蔵され、電通すると前記永久磁石と反発するように配置された電磁石から成ることを特徴とする請求項１に記載の圧送排水装置。The said forced opening means consists of a permanent magnet built in the said valve body, and an electromagnet built in the said valve seat and arrange | positioned so that it may repel the said permanent magnet when it electrically connects. Pressure drainage equipment.

前記強制開口手段は、前記弁体を押し上げることができる押上シャフトと、前記弁座より上流側の前記逆止弁部に備えられ、前記押上シャフトを脱着できる挿入部とから成ることを特徴とする請求項１に記載の圧送排水装置。The forced opening means includes a push-up shaft that can push up the valve body, and an insertion portion that is provided in the check valve portion on the upstream side of the valve seat and can attach and detach the push-up shaft. The pressure-feed drainage device according to claim 1.

排水器具からの排水を貯留できるタンクと、該タンク内の排水を外部に送り出す圧送ポンプ部と、一端が圧送ポンプ部に連通し、他端が圧送ポンプ部より上方で大気開放された圧送管と、前記圧送ポンプ部と前記圧送管を接続する逆止弁部とを備えた圧送排水装置において、
前記逆止弁部は、前記圧送ポンプ部と前記圧送管を連通する連通路と、前記連通路の圧送管側の連通口周囲に設けた弁座と、前記圧送ポンプ部駆動時の圧送された排水により前記連通口の開放方向に移動し、前記圧送ポンプ部停止時の逆流する排水の圧力により前記弁座に当接して前記連通口を閉塞する弁体と、一端を前記弁体より下流側の逆止弁部に接続し、他端を前記タンクに接続したバイパス管と、前記バイパス管を開閉できる開閉部を備えたことを特徴とする圧送排水装置。A tank capable of storing drainage from the drainage device, a pumping pump unit for sending the drainage in the tank to the outside, a pumping tube having one end communicating with the pumping pump unit and the other end being open to the atmosphere above the pumping pump unit In the pressure-feed drainage device comprising the pressure-feed pump portion and a check valve portion that connects the pressure-feed pipe,
The check valve part is pressure-fed when the pressure-feed pump part is driven, a communication path communicating the pressure-feed pump part and the pressure-feed pipe, a valve seat provided around a communication port on the pressure-feed pipe side of the communication path, A valve body that moves in the opening direction of the communication port due to drainage, closes the communication port by contacting the valve seat by the pressure of the backflowing drainage when the pumping pump is stopped, and one end downstream of the valve body A pressure feed / drainage device comprising a bypass pipe connected to the check valve portion and having the other end connected to the tank, and an opening / closing portion capable of opening and closing the bypass pipe.