SUBMERGED PUMP

PROBLEM TO BE SOLVED: To provide a submerged pump including heat insulation structure and suitable for mounting on a tank lorry by reducing size, weigh, heat transmission area and heat capacity. SOLUTION: In a submerged pump provided with a casing main body 14 which consists of an outer tank 13 and an inner tank 12 storing a pump man body 11, a cover member 15 closing an upper opening of the casing main body, a delivery piping 21 passing through the cover member from a delivery port of the pump main body and extending out to an outside, and an intake piping 19 passing through the outer tank and communicating to an inside of the inner tank, and having a vacuum heat insulating layer 16 between the inner tank and the outer tank, an upper end edge of the outer tank is fixed on a lower surface outer circumference part of a flange 25 provided on an upper end part outer circumference of the inner tank, stud bolts 6 for fixing the cover member to a flange upper surface in an inner circumference side of the outer tank fixing part are planted, the stud bolts are inserted through a bolt holes provided on a flange part 15a of the cover member outer circumference , and nuts 29 are threadedly fixed on the stud bolt to detachably sttach the cover member to an upper part of the inner tank. COPYRIGHT: (C)2006,JPO&NCIPI