Patent ID: 6478513
Filing Date: 2002-11-12
Classification: B05B,F04B

Abstract:
A fluid pumping assembly for particulate material comprising:(a) a pump housing including a pumping chamber for handling particulate material, a motive fluid chamber, and a moveable diaphragm between said pumping chamber and said motive fluid chamber; (b) a first means for loading particulate material into said pumping chamber; (c) a second means for injecting a high pressure, high volume purging fluid into said pumping chamber; (d) motive fluid for fluidizing particulate material and moving said moveable diaphragm between said pumping chamber and said motive fluid chamber; and (e) a control system having a control valve connected to said second means for turning off said second means when said first means is loading particulate material into said pumping chamber, thus enabling particulate material to be loaded in a dense phase into said pumping chamber, and thereby optimizing a particulate material moving capacity of the fluid pumping assembly.