Method for conveying, mixing, and leveling dewatered pulp prior to drying
View Patent ↗System for conveying, mixing, leveling, and flaking dewatered pulp to produce pulp flakes suitable to be used in a dryer. The system produces a consistent flow rate of pulp and uniform pulp flakes in terms of pulp flake size and pulp flake moisture content. The system includes a rotating shaftless screw conveyor for mixing and conveying dewatered pulp. The system includes a belt conveyor. The pulp is deposited from the screw conveyor onto the moving belt conveyor through a chute. The system includes a rotary doctor. The pulp is leveled with the rotary doctor located above the belt conveyor to produce a substantially even rate of mass flow of pulp along a length of belt conveyor. Uniform and consistent quantities of pulp per unit time can then be fed from the belt conveyor to a pulp flaker that then translates into an even rate of pulp mass flow to the dryer.
1. A system for producing singulated pulp fibers, comprising:
a shaftless screw conveyor for mixing and conveying dewatered pulp;
a belt conveyor configured to receive the pulp from said shaftless screw conveyor;
a rotary doctor located above said belt conveyor for leveling the pulp deposited on said belt conveyor into substantially even quantities of pulp along a length of belt conveyor;
a pulp flaker configured to receive a substantially even rate of mass flow of pulp from said belt conveyor; and
a jet drier configured to receive said pulp from said pulp flaker.
2. The system of claim 1 , wherein the pulp flaker comprises:
a housing configured with an inlet and an outlet;
a first and second rotor within said housing, said rotors parallel to one another; and
a plurality of fingers on each of said rotors, said fingers circumferentially and longitudinally arranged on said rotors, wherein the fingers of one rotor pass interspaced between the fingers of the second rotor in the region between rotors.
3. The system of claim 1 , wherein said rotary doctor height above the belt conveyor is adjustable.
4. The system of claim 1 , wherein said pulp flaker has at least two rotors, said rotors configured to rotate in opposite directions at a speed differential.