Patent ID: 6878037
Filing Date: 2005-04-12
Classification: B24B,Y10T

Abstract:
1. A system for pumping slurry from a slurry source to a slurry output, said system comprising: a peristaltic pump having an inlet and an outlet; a de-ionized water source supplying pure water to the peristaltic pump; a slurry supply line communicating with the inlet of the pump; a slurry output line in fluid communication with the outlet of the pump, wherein said output line provides slurry to the slurry output; a pressure sensor, operably connected to the slurry supply line, for sensing an inlet pressure in the supply line; and a controller operatively connected to the pump and the pressure sensor, said controller being programmed to receive input regarding the inlet pressure sensed by the pressure sensor, to accept input regarding a desired flow rate, and to calculate a pump speed required to provide the desired flow rate based on the inlet pressure in the supply line, and maintain the pump speed at the calculated pump speed.