Patent ID: 7470106

Claim:
A slurry pump comprising: a rotatable impeller having a plurality of impeller, vanes and an impeller shroud, having an inlet and an outlet and wherein said impeller shroud has a plurality of recesses formed along at least one outer surface of said impeller shroud's sidewall; a pump housing having a side wall with a pump housing recess therein, said recess being deep enough to therein receive said impeller shroud so that an impeller shroud outlet wall and the pump housing side wall are approximately parallel to each other so as to produce a sufficient impingement angle between the impeller shroud outlet and the pump housing side wall to substantially reduce erosion thereon by the accelerated slurry; and a suction liner positioned at the inlet abutting said pump housing and having a side wall including a suction liner recess forming a continuous recess with the pump housing recess.