Stirrer
AssigneeEcolab USA Inc.
InventorJochen Friedrich Knauer
Life of this patent
Estimating the term…
Abstract
A stirrer having a motor; a hollow shaft that is drivable via the motor and is provided with at least one additive outlet opening, via which an additive passed through the hollow shaft can be discharged; and a rotor arranged on the hollow shaft and having rotor blades, characterized in that a second rotor having rotor blades is provided on the hollow shaft at a distance from the first rotor, and in that the at least one additive outlet opening is provided between the two rotors, wherein the rotors are designed and drivable such that, during operation, a negative pressure and a centrifugal force are generated in the intermediate space defined between the rotors.
Claims13
A stirrer comprising:
- a shaft disposed at least partially within a medium;
- a first rotor having a first rotor blade and a second rotor blade each attached to the shaft, wherein the first and second rotor blades are spaced apart from one another about a circumference of the shaft so as to define a gap between the first and second rotor blades, and wherein the first rotor is configured when driven to draw the medium from above the first rotor through the gap between the first and second rotor blades;
- a second rotor spaced axially along the shaft from the first rotor so as to define an intermediate space between the first and second rotors, the second rotor having a third rotor blade and a fourth rotor blade each attached to the shaft, wherein the third and fourth rotor blades are spaced apart from one another about a circumference of the shaft so as to define a gap between the third and fourth rotor blades, and wherein the second rotor is configured when driven to draw the medium from below the second rotor through the gap between the third and fourth rotor blades;
- and
- a first additive outlet opening, defined by the shaft, at the intermediate space between the first and second rotors.
A stirrer comprising:
- a shaft disposed at least partially within a medium;
- a first rotor having a first rotor blade and a second rotor blade each attached to the shaft, wherein the first and second rotor blades are spaced apart from one another about a circumference of the shaft so as to define a gap between the first and second rotor blades, and wherein the first rotor is configured when driven to draw the medium from above the first rotor through the gap between the first and second rotor blades;
- a second rotor spaced axially along the shaft from the first rotor so as to define an intermediate space between the first and second rotors, the second rotor having a third rotor blade and a fourth rotor blade each attached to the shaft, wherein the third and fourth rotor blades are spaced apart from one another about a circumference of the shaft so as to define a gap between the third and fourth rotor blades, and wherein the second rotor is configured when driven to draw the medium from below the second rotor through the gap between the third and fourth rotor blades, and wherein the first and second rotors are configured when driven to push the medium radially outward from the intermediate space;
- and
- a first outlet located at the intermediate space between the first and second rotors to deliver an additive between the first and second rotors.
Dependencies are inferred from the claim text.