Patent ID: 6802638
Filing Date: 2004-10-12
Classification: B01F

Abstract:
An automatically adjusting annular jet mixer comprising:a stationary hollow housing a hollow inner nozzle member that moves axially within the housing along a centerline of the housing in proportional response to variations in pressure of supply water flowing to the housing, said inner nozzle member attaching on one end to a pipe having a powder inlet opening where powder is introduced into the inner nozzle member, said housing having at least one supply water inlet that admits supply water to a downstream area located between the housing and the inner nozzle member, a nozzle opening continuous with said downstream area, and said nozzle opening formed between a discharge end of the inner nozzle member and the housing to allow supply water to flow via the nozzle opening to contact the powder which is flowing through the inner nozzle member, an upstream area formed between the housing and the inner nozzle member and separated from the downstream area by a piston, said piston encircles and attaches to the inner nozzle member, means for pressurizing said upstream area with a regulated pressure, and said piston movably engaging an inner surface of said housing so that together the piston and inner nozzle member automatically move axially within the housing in response to variations in supply water pressure in the downstream area so that the movement of the inner nozzle member is in proportion to the variations in supply water pressure in the downstream area.