Axially valved mixer

Claim 1

A MIXER COMPRISING A HOLLOW LIQUID FLOW HOUSING HAVING COAXIAL FIRST AND SECOND VALUE SEATS IN SPACED RELATION THEREALONG, AN ELONGATED HOLLOW VALUE UNIT MOVEABLE IN SAID HOUSING AND PROVIDED WITH VALUE MEMBERS MOVABLE THEREWITH COAXIALLY OF SAID RESPECTIVE SEATS TO CONTROL FLOW PAST THE LATTER IN A FLOW PASSAGE IN SAID HOUSING EXTERNALLY OF SAID UNIT, HOUSING HAVING INLET AND DISCHARGE OPENING TO SAID PASSAGE ON OPPOSITE SIDES OF SAID FIRST SEAT, MEANS TO MOVE SAID VALVE UNIT TO SIMULTANEOUSLY OPEN SAID FIRST SEAT AND CLOSE SAID SECOND SEAT, AND VICE VERSA, THE INTERIOR OF SAID VALVE UNIT PROVIDING AN INTERNAL FLUID FLOW PASSAGE AND BEING PROVIDED WITH INLET AND DISCHARGE OPEMINGS TO SAID INTERNAL PASSAGE, MEANS PROVIDING AT LEAST ONE VALVE SEAT IN COMMUNICATION WITH SAID FLOW PASSAGE, A VALVE ELEMENT TO CONTROL FLOW PAST SAID LAST NAMED SEAT AND IN SAID INTERNAL FLOW PASSAGE, AND MEANS OPERATING SAID VALVE ELEMENT TO RESPECTIVELY CLOSE AND OPEN SAID LAST NAMED SEAT CONCURRENTLY WITH THE CLOSING AND OPENING OF SAID FIRST VALVE SEAT, SAID HOLLOW VALVE UNIT HAVING MEANS LOCATED COAXIALLY DOWNSTREAM OF SAID SECOND HOUSING VALVE SEAT TO DISCHARGE FLUID FROM SAID INTERNAL FLOW PASSAGE THEREOF FOR MIXTURE WITH FLUID DISCHARGE EXTERNALLY OF SAID VALVE UNIT THROUGH SAID SECOND VALVE SEAT, MEANS PROVIDING A MIXING CHAMBER IN FIXED RELATION TO SAID HOUSING DOWNSTREAM OF SAID SECOND VALVE SEAT AND SAID LAST NAMED DISCHARGE MEANS, A MIXING ROTOR ROTATABLE IN SAID MIXING CHAMBER, AND MEANS TO ROTATE SAID ROTOR, SAID ROTOR COMPRISING AN ELEMENT PROVIDING AN OPEN HELIX FORMATION INTO WHICH FLUIDS DISCHARGE FROM SAID SECOND VALVE SEAT AND SAID LAST NAMED DISCHARGE MEANS, AND A CYLINDRICAL ELEMENT HAVING AN EXTERNAL HELICAL FORMATION IN COMMUNICATION WITH SAID HELIX FORMATION TO RECEIVE FLUID THEREFROM, SAID CHAMBER HAVING AN OPENING THROUGH WHICH MIXED FLUID IS DISCHARGED FROM SAID EXTERNAL HELICAL FORMATION.