Pump system

Abstract

A pump includes a volute, an impeller, a drive-side housing, a chamber plate, a drive shaft, and a positive drive seal. The volute has an inlet port. The impeller is at least partially disposed within the volute. The impeller has a suction collar extending axially into the inlet port. The drive-side housing is mounted to the volute. The chamber plate is positioned between the volute and the drive-side housing. The chamber plate and the drive-side housing define a wet seal chamber. The drive shaft is secured to the impeller and extends through the wet seal chamber. The positive drive seal is disposed in the wet seal chamber. The positive drive seal is non-rotatably secured about the drive shaft and is rotatably engaged with the chamber plate. The positive drive seal forms a seal with the chamber plate.

Dependencies are inferred from the claim text.