Tub blender pressure booster method and apparatus

摘要

A method and apparatus for blending liquids and granular materials in which an impeller assembly is mounted for rotation within a housing at a lower end of a particles inlet and circumferentially spaced impeller vanes in outer concentric relation to a series of expeller vanes surrounding the particles inlet and which together propel the solid particles outwardly to intermix with the liquid introduced into the annulus surrounding the impeller assembly, the annulus being tapered or reduced in area in a direction counter to the direction of slurry flow in order to boost the pressure of the slurry discharged through an outlet port.

主权项

1. A blender apparatus for blending liquids and solid particles wherein a housing has a central solid particles inlet, an impeller assembly, and a motive power source including a drive shaft extending into said solid particles inlet, the blender apparatus comprising:
an outer liquid inlet port and an outlet port communicating in circumferentially spaced relation to one another with an annular space in outer surrounding relation to said impeller assembly in said housing for directing slurry resulting from the intermixture of the solid particles which are driven outwardly with liquid flowing through said liquid inlet port into said annular space; a pump in communication with said outlet port; and said impeller assembly having a base plate adjacent to a lower end of said solid particles inlet and circumferentially spaced impeller vanes mounted on said base plate, each of said impeller vanes extending radially outwardly from a center of the base plate and terminating adjacent to an outer circumferential edge of said base plate, said outer surrounding annular space being reduced adjacent to a portion of the impeller assembly by a sector of the housing that restricts flow of the slurry from said outlet port to said liquid inlet port.