Water pump

Abstract

A water pump includes a driving shat configured to be rotated by an external driving force; an impeller configured to be rotated by being connected to the driving shaft; and a cover frame comprising a main frame having an accommodation space in which the impeller is accommodated, formed therein, a suction pipe, which communicates with one side of the main frame and through which a fluid is suctioned into the accommodation space, and a barrier wall that extends from the suction pipe and disposed at one side between the main frame and the impeller.

What is claimed is: 
     
         1 . A water pump comprising:
 a driving shat configured to be rotated by an external driving force;   an impeller configured to be rotated by being connected to the driving shaft; and   a cover frame comprising a main frame having an accommodation space in which the impeller is accommodated, formed therein, a suction pipe, which communicates with one side of the main frame and through which a fluid is suctioned into the accommodation space, and a barrier wall that extends from the suction pipe and disposed at one side between the main frame and the impeller.   
     
     
         2 . The water pump of  claim 1 , wherein the impeller comprises:
 a disc-shaped base having a center to which the driving shaft is connected;   a plurality of blades coupled to a top surface of the base and extending from the center of the base in a radial form;   a disc-shaped shroud coupled to a top end of each of the plurality of blades; and   an introduction pipe, which communicates with one side of the shroud and through which the fluid is introduced into the impeller, and   the barrier wall extends toward an inside of the introduction pipe.   
     
     
         3 . The water pump of  claim 2 , wherein the cover frame comprises a pair of protrusion pieces that protrude respectively from the inside of the main frame, are disposed at outer circumferential surfaces of the shroud and the base and form a discharge port through which the fluid introduced into the impeller is discharged. 
     
     
         4 . The water pump of  claim 3 , wherein an outer end of the base is inclined so that the base guides the fluid toward a center of the discharge port.