The utility model relates to a
self priming pump technical field especially, it relates to a kind of
self priming pump
water supply structure, including the water tank main body of being set to the one side of pump body, the front end of water tank main body is equipped with water inlet, still include L type water inlet
pipe, one end of L type water inlet
pipe is connected with water inlet, one-way valve is arranged between L type water inlet
pipe and water inlet, one-way valve position is fixed by mounting mechanism, start pump body control L type water inlet pipe to extract underground water, water is extracted to water tank main body by L type water inlet pipe, the water to water tank main body is handled by using one-way valve against back, avoid the water in water tank main body
backflow discharge, to effectively prevent
self priming pump water tank drainage;The utility model prevents self priming pump water tank drainage by the way of
water flow one-way check, avoid the frequent failure caused by self priming pump because of not sucking water, reduce the
machine seal consumption and the
workload of repair personnel, save routine maintenance cost, to ensure the stable operation of mine
dewatering water treatment system.