Agitators
AssigneeImperial Chemical Industries PLC
InventorsJohn C. Middleton, Colin Ramshaw
Life of this patent
Estimating the term…
Abstract
The turbine agitator assembly including a reservoir for liquid, a rotor mounted in the reservoir and with a plurality of radially extending blades, and sparger means for introducing a fluid into liquid in the reservoir. The fluid sparger means and the rotor are so constructed and arranged that, in use, the rotor blades (submerged in the liquid) and/or the liquid flow they generate disperse the sparged fluid. Each of the blades is hollow and has a discontinuous leading edge, only a single trailing edge along an acute angle, no external concave surface and an open radially outer end.
Claims12
A turbine agitator assembly for mixing a less dense fluid into a more dense liquid contained in a reservoir, comprising:
- a rotor including an axially-extending shaft, means for rotating the rotor, in a predetermined direction, a plurality of radially-extending blades arranged in at least one series extending in a circumferential direction about said shaft, and means mounting said blades to said shaft for rotation therewith;
- each said blade:
- being hollow, having an outer surface which is discontinuous circumferentially of a longitudinal axis of the blade whereby the blade is scoop-shaped, with a mouth forming a leading side of the blade when the rotor is rotated in said predetermined direction,
- having an open outer end,
- having only one trailing edge, at which portions of said outer surface approach one another at an acute angle, said trailing edge of each said blade having said portions of said outer surface approaching one another at said acute angle along substantially the whole length of said trailing edge, and
- having said outer surface be free of external concavity;
- a reservoir for containing a quantity of said more dense liquid, in which said blades, in use, are submerged;
- and
- means for sparging said less dense fluid into the more dense liquid in said reservoir adjacent said at least one series of blades for dispersal into said more dense liquid by said blades as said rotor is rotated about a longitudinal axis of said shaft.
A turbine agitator assembly comprising:
- a reservoir for liquid;
- a rotor mounted in the reservoir and carrying a plurality of blades;
- means for rotating the rotor in a predetermined direction;
- and
- means for sparging a fluid into liquid in the reservoir, the fluid sparging means and the rotor being so constructed and arranged that, in use, the rotor blades and/or the liquid flow they generate disperse the sparged fluid;
- each of the blades:
- being of scoop-shaped configuration with the mouth thereof forming the leading face of the blade when the rotor is rotated in said predetermined direction;
- having an outer surface free of external concavity and an open end through which the liquid is discharged;
- and
- being set at an angle to the axis of rotation of the rotor in order to provide an axial component of the discharge flow;
- each blade having only one trailing edge, at which portions of the outer surface of the blade approach one another at an acute angle, said portions of said outer surface approaching one another at said acute angle along substantially the whole length of said trailing edge.
A turbine agitator assembly comprising:
- a reservoir for liquid;
- a rotor mounted in the reservoir and comprising a shaft on which a plurality of blades are mounted;
- means for rotating the rotor in a predetermined direction;
- and
- means for sparging a fluid into liquid in the reservoir, the fluid sparging means and the rotor being so constructed and arranged that, in use, the rotor blades and/or the liquid flow they generate disperse the sparged fluid;
- each of the blades:
- being of scoop-shaped configuration with the mouth thereof forming the leading face of the blade when the rotor is rotated in said predetermined direction;
- having only one trailing edge, at which portions of the outer surface of the blade approach one another at an acute angle, said portions of said outer surface approaching one another at said acute angle along substantially the whole length of said trailing edge;
- having an outer surface free of external concavity and an open end through which the liquid is discharged;
- and
- being mounted by an arm extending radially from said shaft.
Dependencies are inferred from the claim text.