Patent ID: 7131826
Filing Date: 2006-11-07
Classification: B01F,F04C,G05D

Abstract:
1. A blending pump comprising: a fluid motor having a fluid motor rotatable motive element positioned within a fluid motor open chamber on an interior of the fluid motor, a fluid motor inlet channel and a fluid motor outlet channel in fluid communication with the fluid motor open chamber, and a drive axle connected to the fluid motor rotatable motive element and extending through the fluid motor; a fluid pump having a fluid pump rotatable motive element positioned within a fluid pump open chamber on an interior of the fluid pump, a fluid pump inlet channel and a fluid pump outlet channel in fluid communication with the fluid pump open chamber, the fluid pump rotatable motive element of the fluid pump being operatively connected to the drive axle such that torque generated by the fluid motor rotatable motive element is translated to the fluid pump rotatable motive element in the fluid pump; and a valve controlling a recirculation channel in fluid communication with the fluid pump, wherein the fluid motor rotatable motive element and the fluid pump rotatable motive element provide a proportional fluid flow through the fluid motor and the fluid pump regardless of a rotation rate of the fluid motor rotatable motive element and a rotation rate of the fluid pump rotatable motive element.