SEDIMENT PRESSURE PUMP FOR CONSTRUCTION WORK, SHIELD MACHINE, AND SHIELD METHOD

PROBLEM TO BE SOLVED: To provide a sediment pressure pump for construction work whose discharge pressure can be adjusted according to the inflow pressure and pumping distance of sediment to a pump chamber.SOLUTION: There is provided a rotary pump 10 which is used for construction work and pumps sedi...

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Hauptverfasser: HISADA HIDETAKA, NONAKA KEIJIRO, MUNAKATA KUNIYOSHI, SATO HIROSHI, KIYOITA NAOZUMI, NOGUCHI KOJI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a sediment pressure pump for construction work whose discharge pressure can be adjusted according to the inflow pressure and pumping distance of sediment to a pump chamber.SOLUTION: There is provided a rotary pump 10 which is used for construction work and pumps sediment, the rotary pump including: a casing 20 having a circular pump chamber 21, a suction part 22A, and a discharge part 23A; a rotor 30 whose axis of rotation is provided in the pump chamber 21 eccentrically with its center axis toward the discharge part 23A; and a plurality of blades 40 which are fitted to the rotor 30 to swing, extend from the rotor 30 to an outer-diameter side of the pump chamber 21, and are so configured that tips abut on a peripheral wall of the pump chamber 21 as the blades swing to the opposite side in the rotating direction of the rotor 30. The relative position of the discharge part 23A to the suction part 22A in the rotating direction of the rotor 30 can be adjusted. 【課題】土砂のポンプ室への流入圧力や圧送距離に応じて吐出圧力を調整可能な建設工事用の土砂圧送ポンプを提供する。【解決手段】建設工事で用いられ、土砂を圧送するロータリーポンプ10であって、円形のポンプ室21と吸込部22Aと吐出部23Aとを有するケーシング20と、ポンプ室21内にその中心軸に対して回転軸が吐出部23Aの側に偏心して設けられたローター30と、ローター30に揺動可能に取り付けられ、ローター30からポンプ室21の外径側へ延び、ローター30の回転方向の反対側へ揺動すると先端がポンプ室21の周壁に当接するように構成された複数の羽根40とを備え、吐出部23Aのローター30の回転方向についての吸込部22Aに対する相対位置が調整可能に構成されていることを特徴とする。【選択図】図10