impeller alternatively the rib 16 could be replaced with an interior channel not shown by means of well known forces associated with rotating bodies the fluid rises in the increasing diameter of the impeller tube 4 near its top the impeller shape rapidly increases in diameter forming a large diameter disk portion 18 the fluid in the rotating impeller rises to the level of this disk then accelerates in a radially outward direction as it spreads out onto the disk portion subsequently as the fluid continues in a radial direction it is flung from the outer edge of the disk portion of the impeller which comprises an outlet of the recirculating pump 51 spraying in all directions out from the vertical axis of the impeller in a circular pattern covering 360 u00b0 fluid thus sprayed from the outlet of the pump 51 strikes the interior bowl surface 9 providing the dispersion and cleaning effects previously mentioned as will be apparent to one skilled in the art other types of recirculating pumps 51 could be employed other means of spraying the interior bowl surfaces 9 could be used in combination with a recirculating pump one of the advantages of the presently preferred type of recirculating pump described herein is that pumping and spraying action are combined in the function of the impeller.