Mini water pump

Abstract

A mini water pump formed of a housing, a top cover, a bottom cover, a motor, a bottom shell, and a wheel. The housing has a stub tube, which supports the motor in position, and a conical flange, which supports the output shaft of the motor against vibration and a gasket ring on the output shaft. The bottom cover has an upright stub tube stopped at the conical flange of the housing at the bottom side for the passing of the output shaft of the motor, a plurality of inside annular flanges disposed in the upright stub tube at different elevations, and a plurality of gasket rings respectively supported on the inside annular flanges and mounted on the output shaft of the motor to seal the gap.

What the invention claimed is:  
     
         1 . A mini water pump comprising: 
 a housing, said housing having a top open side and having a bottom mounting base;    a top cover covering the top open side of said housing;    a bottom cover coupled to the bottom mounting base of said housing;    a motor mounted in said housing, said motor having an output shaft extended out of said bottom mounting base of said housing and said bottom cover;    a bottom shell coupled to said bottom cover and defining with said bottom cover a water accumulation chamber, said bottom shell having at least one bottom water inlet and at least one peripheral water outlet; and    a wheel coupled to the output shaft of said motor and suspended in said water accumulation chamber for synchronous rotation with said motor to drive water from said at least one water inlet toward said at least one water outlet;    wherein said housing comprises a stub tube upwardly protruded from the center of said bottom mounting base for supporting said motor in position, a conical flange downwardly suspended in said stub tube, a center through hole through said conical flange for the passing of the output shaft of said motor, and a gasket ring supported on said conical flange around the output shaft of said motor;    said bottom cover comprises a top coupling chamber coupled to the bottom mounting base of said housing, an upright stub tube disposed at the center inside said top coupling chamber and stopped at the conical flange of said housing for the passing of the output shaft of said motor, a plurality of inside annular flanges disposed in said upright stub tube at different elevations, and a plurality of gasket rings respectively supported on said inside annular flanges and mounted on the output shaft of said motor;    said bottom shell comprises two water outlets disposed in the periphery thereof at two sides, and two output pipes respectively extended from the water outlets for output of water;    said wheel comprises a plurality of blades spirally radially formed integral with a bottom sidewall thereof.