Underwater Agitation Pump

摘要

An underwater agitation pump can suck soil, sand or the like which contains block-like material or string-like material in a dredging site or the like while efficiently agitating such soil, sand or the like and thereafter can discharge such sand, soil or the like to a desired place. The underwater agitation pump 10 comprises an impeller casing 11 in which an impeller 15 driven by a motor 18 is rotatably accommodated, an agitated material suction guide cylinder 23 being constituted of a hollow cylinder which has proximal end opening portion thereof integrally communicably connected to a center suction opening portion 16 of the impeller 15 while passing through a center opening 12 of the impeller casing 11 and having the distal end opening portion thereof extended downwardly, the agitated material suction guide cylinder 23 further forming an agitated material suction passage 24 in the inside thereof, and an agitator 25 which is mounted on an outer peripheral portion of the distal end opening portion of the agitated material suction guide cylinder 23. Due to such a constitution, the agitated material suction passage 24 formed in the inside of the agitated material suction guide cylinder 23 can ensure a sufficiently wide agitated material inflow area.