Universal spa pump
View Patent ↗A Universal Spa Pump (USP) allows a user to change the orientation of the pump discharge by redesigning a pump backplate to attach to an electric motor (both 48-frame and 56-frame) separately from the connections between the pump frontplate and a volute. To change the discharge orientation on the USP, the bolts attaching the frontplate (or volute) to the backplate are removed, the frontplate rotated, and the bolts reattached. By maintaining the connection between the pump backplate, the motor, a motor shaft, shaft seal, the alignment of the backplate and the impeller is maintained.
1. A Universal Spa Pump (USP), comprising:
a 48-frame motor or a 56-frame motor;
a backplate attached to the motor by motor fasteners reaching through the motor an into threaded motor attachment passages in the backplate, the motor fasteners not engaging a frontplate, the threaded motor attachment passages comprising pairs of the threaded motor attachment passages for both the 48-frame motor and the 56-frame motor;
a motor shaft reaching forward from the motor through the backplate;
an impeller riding on the motor shaft ahead of the backplate;
the frontplate residing over impeller and including an inlet, a discharge, and a volute;
a watercut in the volute directing a flow of water to the discharge;
the frontplate attached to the backplate by eight angularly spaced 45 degrees apart frontplate fasteners engaging eight angularly spaced 45 degrees apart threaded frontplate attachment passages in the backplate, the frontplate attachable to the backplate in 45 degree steps to reorientate the direction of the discharge; and
the frontplate is detachable from the backplate by removing the frontplate fasteners and leaving the backplate fasteners in place, wherein removal of the frontplate does not detach the backplate from the motor or disturb the relationship of the backplate to the motor shaft or motor.
2. The USP of claim 1 , wherein the frontplate is detachable from the backplate and reattachable at a different orientation.