High density pulp mixing

Claim 1

APPARATUS FOR MIXING A LIQUID WITH A PULP MASS COMPRISING, A LONGITUDINALLY EXTENDING CYLINDRICAL MIXING CHAMBER HAVING A PULP INLET OPENING NEAR ONE END AND A PULP OUTLET OPENING NEAR THE OTHER END, MEANS FOR FEEDING PULP LONGITUDINALLY UNDER PRESSURE FROM SAID INLET THROUGH SAID CHAMBER TO SAID OUTLET, A LIQUID INLET PIPE EXTENDING TRANSVERSELY OF SAID CHAMBER NEAR THE AXIS THEREOF AND HAVING A SERIES OF LIQUID INLET OPENINGS THEREIN FOR INJECTING LIQUID INTO PULP IN A DOWNSTREAM DIRECTION ACROSS A TRANSVERSE LINE APPROACHING A DIAMETER OF SAID CYLINDRICAL CHAMBER, ROTARY MEANS ADJACENT SAID LIQUID INLET OPENINGS ROTAING THE PULP ACROSS A PLANE TRANSVER OF SAID CHAMBER FOR SPREADING INJECTED LIQUID IN TRANSVERSE LAYERS WITHIN THE PULP WHILE PULP IN FED LONGITUDINALLY IN SAID CHAMBER, SETS OF HELICAL KNEADING BLADES DOWNSTREAM OF SAID ROTARY MEANS EXTENDING LONGITUDINALLY OF SAID CHAMBER AND ROTATABLE THEREIN TO TURN AND KNEAD THE PULP WITH ENTRAINED LIQUID THEREIN RADIALLY BOTH INWARDLY AND OUTWARDLY AND LONGITUDINALLY OF SAID CHAMBER BOTH TOWARD AND AWAY FROM SAID PULP OUTLET END AND MEANS BEYOND SAID KNEADING BLADES FOR DISCHARGING MIXED LIQUID AND PULP FROM SAID PULP OUTLET OPENING.