JP4622704B2 - Method for preventing blockage of earth and sand suction device and earth and sand suction device - Google Patents

Method for preventing blockage of earth and sand suction device and earth and sand suction device Download PDF

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JP4622704B2
JP4622704B2 JP2005191738A JP2005191738A JP4622704B2 JP 4622704 B2 JP4622704 B2 JP 4622704B2 JP 2005191738 A JP2005191738 A JP 2005191738A JP 2005191738 A JP2005191738 A JP 2005191738A JP 4622704 B2 JP4622704 B2 JP 4622704B2
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hose
sand
earth
valve
pressure
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JP2007009536A (en
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聖 佐野
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IHI Corp
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Description

本発明は、土砂を吸引するための先端ノズルにホースを介して吸引ポンプを接続し、ホースの途中に吸引空気と土砂とを分離する土砂分離タンクを接続した土砂吸引装置の閉塞予防方法及び土砂吸引装置に関するものである。   The present invention relates to a method for preventing clogging of a sediment suction apparatus in which a suction pump is connected via a hose to a tip nozzle for suctioning sediment, and a sediment separation tank for separating suction air and sediment is connected to the middle of the hose, and sediment The present invention relates to a suction device.

爆発物等の危険物を含む汚染土砂等を除去する装置としては、土砂を減圧吸引して空送する土砂吸引装置が知られている。   As an apparatus for removing contaminated earth and sand containing dangerous substances such as explosives, an earth and sand suction apparatus for sucking and sending the earth and sand by vacuum is known.

図２に示すように、土砂吸引装置３０は、土砂２を吸引する先端ノズル３１と、先端ノズル３１に接続されたホース３２と、ホース３２に接続されホース３２内を真空引きする真空ポンプ３３と、ホース３２の途中に接続され吸引空気と土砂２とを分離する土砂分離タンク３４とを備えて構成されている。この土砂吸引装置３０によれば、先端ノズル３１で土砂２を吸引してホース３２内を搬送するため、土砂２を取り除くときに汚染土砂周辺に存在する爆発物等の危険物（図示せず）に衝撃を与えるのを防ぐことができると共に、汚染範囲に対して限定的に使用できる。   As shown in FIG. 2, the earth and sand suction device 30 includes a tip nozzle 31 for sucking the earth and sand 2, a hose 32 connected to the tip nozzle 31, and a vacuum pump 33 that is connected to the hose 32 and evacuates the inside of the hose 32. The earth and sand separation tank 34 is provided in the middle of the hose 32 and separates the suction air and the earth and sand 2. According to this earth and sand suction device 30, since the earth and sand 2 is sucked by the tip nozzle 31 and conveyed in the hose 32, dangerous substances such as explosives (not shown) existing around the contaminated earth and sand when the earth and sand 2 is removed. Can be prevented, and can be used limitedly to the contamination range.

また、先端ノズル３１内には水を噴射する洗浄水用ノズル（図示せず）が設けられており、ホース３２が土砂２で閉塞したとき洗浄水用ノズルからホース３２内に水を数回に分けて流すことでホース３２内の閉塞を解除するようになっていた。   Further, a cleaning water nozzle (not shown) for injecting water is provided in the tip nozzle 31, and when the hose 32 is blocked by the earth and sand 2, water is supplied into the hose 32 several times from the cleaning water nozzle. The blockage in the hose 32 was released by flowing separately.

特開２００４−３２４３５６号公報JP 2004-324356 A 特開２００４−３２４３５７号公報JP 2004-324357 A 特開２００４−３２４３５８号公報JP 2004-324358 A

しかしながら、ホース３２内に水を流してホース３２の閉塞を解除するには、数百Ｌ／回もの大量の水を使用しなければならないという課題があると共に、ホース３２内の乾燥に時間がかかるという課題があった。また、搬送する土砂が汚染されている場合、使用後の洗浄水の処理が問題となる課題があった。   However, in order to release the blockage of the hose 32 by flowing water into the hose 32, there is a problem that a large amount of water of several hundred L / times must be used, and it takes time to dry the hose 32. There was a problem. Moreover, when the earth and sand to be conveyed are contaminated, there has been a problem that the treatment of cleaning water after use becomes a problem.

そこで、本発明の目的は、上記課題を解決し、水を使用しなくてもホースの閉塞を予防できる土砂吸引装置の閉塞防止方法及び土砂吸引装置を提供することにある。   Accordingly, an object of the present invention is to solve the above-described problems and to provide a method for preventing clogging of a soil and sand suction device and a soil and sand suction device capable of preventing the hose from being clogged without using water.

上記課題を解決するために本発明は、土砂を吸引するための先端ノズルにホースを介して吸引ポンプを接続し、上記ホースの途中に吸引空気と土砂とを分離する土砂分離タンクを接続した土砂吸引装置の閉塞予防方法において、上記ホースの先端側にホースを開閉するバルブを設け、上記土砂分離タンク又は上記ホース内の圧力が所定圧以下となったとき上記バルブを閉めて上記ホース内の圧力をさらに下げた後、上記バルブを一気に開けてホース内に空気を吸い込ませ、その空気の衝撃でホース内に付着した土砂を剥離するものである。   In order to solve the above-mentioned problems, the present invention provides a sand pump in which a suction pump is connected to a tip nozzle for sucking earth and sand through a hose, and a sand and sand separation tank that separates suction air and earth and sand is connected in the middle of the hose. In the suction device blockage prevention method, a valve for opening and closing the hose is provided on the tip side of the hose, and the pressure in the hose is closed by closing the valve when the pressure in the earth and sand separation tank or the hose becomes a predetermined pressure or less. Is further lowered, the valve is opened at once, air is sucked into the hose, and the earth and sand adhering to the hose is peeled off by the impact of the air.

また、土砂を吸引するための先端ノズルにホースを介して吸引ポンプを接続し、上記ホースの途中に吸引空気と土砂とを分離する土砂分離タンクを接続した土砂吸引装置において、上記ホースの先端側に設けられホースを閉じてホース内の圧力を下げるためのバルブと、該バルブに接続され、バルブを閉じてホース内の圧力を下げた後上記バルブを一気に開けるバルブ制御装置とを備え、該バルブ制御装置でバルブを一気に開けたときにホースに吸い込まれる空気の衝撃でホース内に付着した土砂を剥離するように構成したものである。   In addition, in the earth and sand suction device in which a suction pump is connected to a tip nozzle for sucking earth and sand through a hose, and a sand and sand separation tank for separating suction air and earth and sand is connected in the middle of the hose, the tip side of the hose A valve for closing the hose to lower the pressure in the hose, and a valve control device connected to the valve for opening the valve at once after closing the valve to lower the pressure in the hose. When the valve is opened at once by the control device, the earth and sand adhering to the inside of the hose is peeled off by the impact of air sucked into the hose.

上記土砂分離タンクには真空圧ゲージが設けられ、上記バルブ制御装置は、上記真空圧ゲージの計測値が所定圧以下となったとき、上記バルブを閉じるように構成されるとよい。   The earth and sand separation tank may be provided with a vacuum pressure gauge, and the valve control device may be configured to close the valve when a measured value of the vacuum pressure gauge becomes a predetermined pressure or less.

本発明によれば、水を使用せずにホースの閉塞を予防できる。   According to the present invention, it is possible to prevent the hose from being blocked without using water.

本発明の好適実施の形態を添付図面を用いて説明する。   Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

図１に示すように、土砂吸引装置１は、土砂２を吸引するための先端ノズル３にホース４を介して吸引ポンプ５を接続し、ホース４の途中に吸引空気と土砂２とを分離する土砂分離タンク６を接続して構成されている。   As shown in FIG. 1, the earth and sand suction device 1 connects a suction pump 5 via a hose 4 to a tip nozzle 3 for sucking earth and sand 2, and separates suction air and earth and sand 2 in the middle of the hose 4. The earth and sand separation tank 6 is connected.

先端ノズル３は、断面四角形の略筒状に形成されたノズル本体７と、ノズル本体７の下端周囲に設けられ地面との隙間を覆うブラシ部材８とを備えている。   The tip nozzle 3 includes a nozzle body 7 formed in a substantially cylindrical shape having a square cross section, and a brush member 8 provided around the lower end of the nozzle body 7 and covering a gap with the ground.

ホース４は、筒状に形成されたホース本体９に螺旋状の補強材（図示せず）を一体に設けてなるものであり、吸引ポンプ５で真空引きされても径方向に潰れないように強固に形成されている。また、ホース４は、図示しない建設機械の可動アーム等に支持されるようになっている。   The hose 4 is formed by integrally providing a spiral reinforcing material (not shown) on a hose body 9 formed in a cylindrical shape so that it does not collapse in the radial direction even if it is evacuated by the suction pump 5. It is firmly formed. The hose 4 is supported by a movable arm or the like of a construction machine (not shown).

ホース４の先端側には、ホース４を閉じてホース４内の圧力を下げるためのバルブ１０が設けられている。バルブ１０は、吸引ポンプ５作動中に閉じることでホース４内の圧力を下げられるようになっており、ホース４内の圧力を下げた状態で一気に開くことでホース４内に空気を一気に吸い込めるようになっている。具体的には、バルブ１０は、ホース４の径方向にスライド自在な弁板１１と、弁板１１を径方向に移動させる弁用アクチュエータ１２とを備えたゲートバルブからなり、先端ノズル３とホース４との間に設けられている。バルブ１０は、ホース４を全開全閉可能に形成されており、全開することで土砂２の流れを阻害しないようになっており、全閉することで迅速にホース４内の圧力を下げられるようになっている。また、バルブ１０には、バルブ１０を閉じてホース４内の圧力を下げた後バルブ１０を一気に開けるようにプログラムされたバルブ制御装置２３が接続されている。バルブ制御装置２３には、土砂分離タンク６内の真空圧を計測する真空圧ゲージ１３が接続されている。すなわち、バルブ制御装置２３は、真空圧ゲージ１３の計測値が所定圧以下となったとき、バルブ１０を閉じるように構成されている。吸引ポンプ５は、真空ポンプからなる。   A valve 10 for closing the hose 4 and reducing the pressure in the hose 4 is provided on the tip side of the hose 4. The valve 10 can be closed during the operation of the suction pump 5 so that the pressure in the hose 4 can be lowered. When the pressure in the hose 4 is lowered, the valve 10 can be opened at a stroke to suck air into the hose 4 at once. It is like that. Specifically, the valve 10 is composed of a gate valve including a valve plate 11 slidable in the radial direction of the hose 4 and a valve actuator 12 for moving the valve plate 11 in the radial direction. 4 is provided. The valve 10 is formed so that the hose 4 can be fully opened and fully closed. By fully opening the hose 4, the flow of the earth and sand 2 is not inhibited. By fully closing, the pressure in the hose 4 can be quickly reduced. It has become. Also connected to the valve 10 is a valve control device 23 programmed to open the valve 10 at once after the valve 10 is closed and the pressure in the hose 4 is lowered. The valve control device 23 is connected to a vacuum pressure gauge 13 for measuring the vacuum pressure in the earth and sand separation tank 6. That is, the valve control device 23 is configured to close the valve 10 when the measured value of the vacuum pressure gauge 13 becomes a predetermined pressure or less. The suction pump 5 is a vacuum pump.

土砂分離タンク６は、密閉容器状に形成されており、頂部にホース４の上流側が鉛直に接続されると共に上部側面にホース４の下流側が水平に接続されている。土砂分離タンク６には、真空圧ゲージ１３が設けられると共に、内部空間を上下に仕切るシャッター１４、１５が開閉自在に、かつ、多段に設けられており、土砂分離タンク６内に複数の土砂収容室１６、１７を形成するようになっている。シャッター１４、１５は土砂分離タンク６に対して水平方向スライド自在な底板１８と、底板１８を水平方向に移動させるシャッター用アクチュエータ１９とを備えて構成されている。また、土砂分離タンク６には、最上段の土砂収容室１６内の土砂２の高さが所定高さに達したか否かを検出する位置センサー２０が設けられている。位置センサー２０は、制御装置２１を介してそれぞれのシャッター１４、１５に接続されており、土砂２が所定高さに達したとき下段側から順番にシャッター１５、１４を開閉し、最下段の土砂収容室１７から土砂２を放出すると共にその上段側の土砂収容室１６の土砂２を１段落下させるようになっている。   The earth and sand separation tank 6 is formed in a closed container shape, and the upstream side of the hose 4 is vertically connected to the top and the downstream side of the hose 4 is horizontally connected to the upper side surface. The earth and sand separation tank 6 is provided with a vacuum pressure gauge 13, and shutters 14 and 15 for partitioning the internal space up and down are provided in a multistage manner so that a plurality of earth and sand can be accommodated in the earth and sand separation tank 6. Chambers 16 and 17 are formed. The shutters 14 and 15 include a bottom plate 18 that is slidable in the horizontal direction with respect to the earth and sand separation tank 6 and a shutter actuator 19 that moves the bottom plate 18 in the horizontal direction. Further, the earth / sand separation tank 6 is provided with a position sensor 20 for detecting whether or not the height of the earth / sand 2 in the uppermost earth / sand container 16 has reached a predetermined height. The position sensor 20 is connected to the shutters 14 and 15 via the control device 21, and when the earth and sand 2 reaches a predetermined height, the shutters 15 and 14 are opened and closed in order from the lower stage side, and the lowermost earth and sand. The earth and sand 2 is discharged from the accommodation chamber 17 and the earth and sand 2 in the earth and sand accommodation chamber 16 on the upper side is lowered by one stage.

また、土砂分離タンク６の下流側のホース４には、土砂分離タンク６から漏れ出た土砂を除去するためのフィルター２２が介設されている。   The hose 4 on the downstream side of the earth and sand separation tank 6 is provided with a filter 22 for removing earth and sand leaking from the earth and sand separation tank 6.

次に本実施の形態の作用と上記土砂吸引装置１の閉塞防止方法とについて述べる。   Next, the operation of the present embodiment and the blocking prevention method of the earth and sand suction device 1 will be described.

土砂２を吸引する場合、バルブ１０を全開にした状態で先端ノズル３の先端を土砂２に近接させ、吸引ポンプ５を作動させる。これにより、先端ノズル３は真空引きされ、土砂２を吸い込む。先端ノズル３に吸い込まれた土砂２と空気は、ホース４を通って土砂分離タンク６に至り、土砂２は最上段の土砂収容室１６に落下し、空気はホース４を通って吸引ポンプ５に吸引される。このとき、バルブ１０は全開となっているため、土砂２の流れを阻害することはない。   When the earth and sand 2 is sucked, the tip of the tip nozzle 3 is brought close to the earth and sand 2 with the valve 10 fully opened, and the suction pump 5 is operated. Thereby, the tip nozzle 3 is evacuated and sucks the earth and sand 2. The earth and sand 2 sucked into the tip nozzle 3 passes through the hose 4 to the earth and sand separation tank 6, the earth and sand 2 falls into the uppermost earth and sand storage chamber 16, and the air passes through the hose 4 to the suction pump 5. Sucked. At this time, since the valve 10 is fully opened, the flow of the earth and sand 2 is not hindered.

このようにして土砂２を搬送しているときに土砂２がホース４内に付着して成長した場合、その成長した土砂２の大きさに応じて土砂分離タンク６及びホース４内の圧力が低下する。ホース４内には土砂２が流れているため、ホース４に付着した土砂２は流れる土砂２に押し流されて自然に消滅することもあるが、付着した土砂２が消滅せず、土砂分離タンク６又はホース４内の圧力が所定圧以下となったら、バルブ１０を完全に閉めてホース４内の圧力をさらに下げる。具体的には、土砂分離タンク６内の圧力を真空圧ゲージ１３で測定し、測定値が所定値以下となったらバルブ制御装置２３がこれを検知し、バルブ１０を閉じる。ホース４は、径方向の力に対しては強固に形成されているため潰れることはなく、軸方向に若干縮退する。これにより、ホース４に付着した土砂２がホース４から若干剥がれる。   When the earth and sand 2 adheres in the hose 4 and grows while transporting the earth and sand 2 in this way, the pressure in the earth and sand separation tank 6 and the hose 4 decreases according to the size of the grown earth and sand 2. To do. Since the earth and sand 2 flows in the hose 4, the earth and sand 2 adhering to the hose 4 may be swept away by the flowing earth and sand 2 and disappear naturally, but the adhering earth and sand 2 does not disappear and the earth and sand separation tank 6 Alternatively, when the pressure in the hose 4 becomes a predetermined pressure or less, the valve 10 is completely closed to further lower the pressure in the hose 4. Specifically, the pressure in the earth and sand separation tank 6 is measured by the vacuum pressure gauge 13, and when the measured value becomes a predetermined value or less, the valve control device 23 detects this and closes the valve 10. Since the hose 4 is firmly formed with respect to the radial force, the hose 4 is not crushed and slightly degenerates in the axial direction. Thereby, the earth and sand 2 adhering to the hose 4 is peeled off from the hose 4 slightly.

この後、ホース４内の圧力が十分下がったら、バルブ制御装置２３はバルブ１０を一気に開けてホース４内に空気を吸い込ませる。このとき、ホース４内の圧力は低ければ低いほど土砂２を剥離する効果は高くなるが、ホース４や土砂分離タンク６等が破損しない程度の所定圧力に止めておく。空気はホース４内に急激に吸い込まれ、ホース４に付着した土砂２に衝撃を伴ってぶつかり、土砂２をホース４から剥離する。このとき、予めホース４が軸方向に縮退することで土砂２は若干剥がれ気味になっているため、土砂２に作用する力は土砂２とホース４との境目に集中し、土砂２はホース４から容易に剥離することとなる。   Thereafter, when the pressure in the hose 4 is sufficiently lowered, the valve control device 23 opens the valve 10 at a stretch and sucks air into the hose 4. At this time, the lower the pressure in the hose 4, the higher the effect of peeling the earth and sand 2, but the pressure is kept at a predetermined pressure that does not damage the hose 4 and the earth and sand separation tank 6. The air is rapidly sucked into the hose 4, collides with the earth and sand 2 attached to the hose 4 with an impact, and the earth and sand 2 is separated from the hose 4. At this time, since the hose 4 is retracted in the axial direction in advance, the earth and sand 2 are slightly peeled off, so that the force acting on the earth and sand 2 is concentrated at the boundary between the earth and sand 2 and the hose 4. It will peel off easily.

このように、ホース４の先端側にホース４を開閉するバルブ１０を設け、土砂分離タンク６又はホース４内の圧力が所定圧以下となったときバルブ１０を閉めてホース４内の圧力をさらに下げた後、バルブ１０を一気に開けてホース４内に空気を吸い込ませ、その空気の衝撃でホース４内に付着した土砂２を剥離するため、水を使用しなくてもホース４の閉塞を予防でき、洗浄水供給用のポンプ、配管等の給水系を省略でき、ホース４内部の乾燥に時間を取られて土砂吸引装置１の稼働率が低下するのを防ぐことができ、洗浄排水による汚染拡大を防ぐことができる。   In this manner, the valve 10 for opening and closing the hose 4 is provided on the tip side of the hose 4, and when the pressure in the earth and sand separation tank 6 or the hose 4 becomes a predetermined pressure or less, the valve 10 is closed to further increase the pressure in the hose 4. After the lowering, the valve 10 is opened at once, air is sucked into the hose 4, and the earth and sand 2 adhered to the hose 4 is peeled off by the impact of the air, so that the hose 4 is prevented from being blocked without using water. It is possible to eliminate the water supply system such as a pump for supplying cleaning water, piping, etc., it is possible to prevent the operation rate of the earth and sand suction device 1 from being lowered due to the time required for drying inside the hose 4, and contamination due to the cleaning waste water. Expansion can be prevented.

また、土砂吸引装置１を、ホース４の先端側に設けられホース４を閉じてホース４内の圧力を下げるためのバルブ１０と、バルブ１０に接続され、バルブ１０を閉じてホース４内の圧力を下げた後バルブ１０を一気に開けるバルブ制御装置２３とを備え、バルブ制御装置２３でバルブ１０を一気に開けたときにホース４に吸い込まれる空気の衝撃でホース４内に付着した土砂２を剥離するように構成したため、簡単な構造で容易にホース４内に付着した土砂２を剥離することができる。   Further, the earth and sand suction device 1 is provided on the tip end side of the hose 4 and is connected to the valve 10 for closing the hose 4 to lower the pressure in the hose 4. The valve 10 is closed and the pressure in the hose 4 is closed. And a valve control device 23 that opens the valve 10 at once after the pressure is lowered, and the earth and sand 2 adhering to the inside of the hose 4 is peeled off by the impact of air sucked into the hose 4 when the valve 10 is opened at once by the valve control device 23. Since it comprised in this way, the earth and sand 2 adhering in the hose 4 can be easily peeled with a simple structure.

土砂分離タンク６には真空圧ゲージ１３が設けられ、バルブ制御装置２３は、真空圧ゲージ１３の計測値が所定圧以下となったとき、バルブ１０を閉じるように構成されるものとしたため、ホース４に土砂２が付着して成長したとき、確実にバルブ１０を閉じることができ、ホース４が完全に閉塞する前にホース４に付着した土砂２を剥離できる。   The earth and sand separation tank 6 is provided with a vacuum pressure gauge 13, and the valve control device 23 is configured to close the valve 10 when the measured value of the vacuum pressure gauge 13 becomes a predetermined pressure or less. When the earth and sand 2 adhere to 4 and grow, the valve 10 can be reliably closed, and the earth and sand 2 attached to the hose 4 can be peeled before the hose 4 is completely closed.

なお、バルブ１０はゲートバルブからなるものとしたが、これに限るものではない。ホース４を全開全閉できるものであれば、ピンチバルブ等の他のタイプのバルブであってもよい。   The valve 10 is a gate valve, but is not limited thereto. Other types of valves such as a pinch valve may be used as long as the hose 4 can be fully opened and closed.

また、バルブ１０は制御装置で自動的に開閉するものとしたが、手動で開閉するものとしてもよい。   The valve 10 is automatically opened and closed by the control device, but may be manually opened and closed.

本発明の好適実施の形態を示す土砂吸引装置の側断面図である。It is a sectional side view of the earth and sand suction apparatus which shows suitable embodiment of this invention. 従来の土砂吸引装置の概略説明図である。It is a schematic explanatory drawing of the conventional earth and sand suction apparatus.

符号の説明Explanation of symbols

１ 土砂吸引装置
２ 土砂
３ 先端ノズル
４ ホース
５ 吸引ポンプ
６ 土砂分離タンク
１０ バルブ
１３ 真空圧ゲージ
２３ バルブ制御装置
DESCRIPTION OF SYMBOLS 1 Earth and sand suction device 2 Earth and sand 3 Tip nozzle 4 Hose 5 Suction pump 6 Earth and sand separation tank 10 Valve 13 Vacuum pressure gauge 23 Valve control device

Claims (3)

土砂を吸引するための先端ノズルにホースを介して吸引ポンプを接続し、上記ホースの途中に吸引空気と土砂とを分離する土砂分離タンクを接続した土砂吸引装置の閉塞予防方法において、上記ホースの先端側にホースを開閉するバルブを設け、上記土砂分離タンク又は上記ホース内の圧力が所定圧以下となったとき上記バルブを閉めて上記ホース内の圧力をさらに下げた後、上記バルブを一気に開けてホース内に空気を吸い込ませ、その空気の衝撃でホース内に付着した土砂を剥離することを特徴とする土砂吸引装置の閉塞予防方法。   In a method for preventing clogging of a sand and sand suction apparatus, a suction pump is connected to a tip nozzle for sucking earth and sand through a hose, and a sand and sand separation tank for separating suction air and earth and sand is connected in the middle of the hose. A valve for opening and closing the hose is provided on the tip side, and when the pressure in the sediment separation tank or the hose becomes a predetermined pressure or less, the valve is closed to further reduce the pressure in the hose, and then the valve is opened at once. A method for preventing clogging of a sediment suction device, characterized in that air is sucked into the hose and the sediment adhered to the hose is peeled off by the impact of the air. 土砂を吸引するための先端ノズルにホースを介して吸引ポンプを接続し、上記ホースの途中に吸引空気と土砂とを分離する土砂分離タンクを接続した土砂吸引装置において、上記ホースの先端側に設けられホースを閉じてホース内の圧力を下げるためのバルブと、該バルブに接続され、バルブを閉じてホース内の圧力を下げた後上記バルブを一気に開けるバルブ制御装置とを備え、該バルブ制御装置でバルブを一気に開けたときにホースに吸い込まれる空気の衝撃でホース内に付着した土砂を剥離するように構成したことを特徴とする土砂吸引装置。   Provided on the tip side of the hose in the earth and sand suction device, where a suction pump is connected to the tip nozzle for sucking earth and sand through a hose, and a sand and sand separation tank that separates suction air and earth and sand is connected in the middle of the hose A valve for lowering the pressure in the hose by closing the hose, and a valve control device connected to the valve and opening the valve at once after closing the valve to lower the pressure in the hose, the valve control device When the valve is opened at once, the earth and sand suction device is configured to peel off the earth and sand adhering to the inside of the hose by the impact of air sucked into the hose. 上記土砂分離タンクには真空圧ゲージが設けられ、上記バルブ制御装置は、上記真空圧ゲージの計測値が所定圧以下となったとき、上記バルブを閉じるように構成された請求項２記載の土砂吸引装置。
3. The earth and sand according to claim 2, wherein the earth and sand separation tank is provided with a vacuum pressure gauge, and the valve control device is configured to close the valve when a measured value of the vacuum pressure gauge becomes a predetermined pressure or less. Suction device.
JP2005191738A 2005-06-30 2005-06-30 Method for preventing blockage of earth and sand suction device and earth and sand suction device Expired - Fee Related JP4622704B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7294725B1 (en) 2022-07-27 2023-06-20 山美津電気株式会社 Method and equipment for removing soil stuck to inner wall of suction hose by suction excavation method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021021219A (en) * 2019-07-25 2021-02-18 大成建設株式会社 Sediment recovery system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06147197A (en) * 1992-04-23 1994-05-27 Tsurumi Mfg Co Ltd Solid liquid suction and lifting apparatus and usage therefor
JPH06193383A (en) * 1992-12-24 1994-07-12 Kanematsu Eng Kk Method and device for transferring sludge in ground excavation
JPH11303585A (en) * 1998-04-24 1999-11-02 Nkk Corp Carry-out control device for dug earth and sand
JP2004324357A (en) * 2003-04-28 2004-11-18 Ishikawajima Harima Heavy Ind Co Ltd Earth and sand excavating suction equipment
JP2004324356A (en) * 2003-04-28 2004-11-18 Ishikawajima Harima Heavy Ind Co Ltd Earth and sand digging suction equipment
JP2004324358A (en) * 2003-04-28 2004-11-18 Ishikawajima Harima Heavy Ind Co Ltd Earth and sand excavating suction equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06147197A (en) * 1992-04-23 1994-05-27 Tsurumi Mfg Co Ltd Solid liquid suction and lifting apparatus and usage therefor
JPH06193383A (en) * 1992-12-24 1994-07-12 Kanematsu Eng Kk Method and device for transferring sludge in ground excavation
JPH11303585A (en) * 1998-04-24 1999-11-02 Nkk Corp Carry-out control device for dug earth and sand
JP2004324357A (en) * 2003-04-28 2004-11-18 Ishikawajima Harima Heavy Ind Co Ltd Earth and sand excavating suction equipment
JP2004324356A (en) * 2003-04-28 2004-11-18 Ishikawajima Harima Heavy Ind Co Ltd Earth and sand digging suction equipment
JP2004324358A (en) * 2003-04-28 2004-11-18 Ishikawajima Harima Heavy Ind Co Ltd Earth and sand excavating suction equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7294725B1 (en) 2022-07-27 2023-06-20 山美津電気株式会社 Method and equipment for removing soil stuck to inner wall of suction hose by suction excavation method
JP2024016910A (en) * 2022-07-27 2024-02-08 山美津電気株式会社 Removal method of drained soil tightly attached on inner wall of sucking hose in sucking excavation method

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