An improved method for mixing and/or drying particulate material is achieved with a housing having a substantially cylindrical portion and a tapered portion arranged coaxially therewith. A motor-driven rotor is arranged within the housing and is provided with a plurality of impeller blades which are affixed at one end to the shaft member. The impeller blades extend substantially radially outwardly toward the internal surface of the housing means. Each blade has a dual pitch characteristic which, in combination with a direction or rotation permits establishment of first and second flows of the fluidized material in opposite directions in the housing. The first and second flows are combined in the tapered section of the housing wherein there is provided a terminating impeller which agitates the combined flows in response to rotation of the central shaft. A material flow of the particulate material with sufficient velocity will fluidize the material being mixed or dryed. Fluidization of the particulate material achieves very rapid, uniform and efficient drying and/or mixing.
申请公布号
US4650343(A)
申请公布日期
1987.03.17
申请号
US19840668657
申请日期
1984.11.06
申请人
DOOM, LEWIS W. G.;DOOM, JR., LEWIS W. G.;URBAN, ROBERT W.
发明人
DOOM, LEWIS W. G.;DOOM, JR., LEWIS W. G.;URBAN, ROBERT W.