Liquid ring and centrifugal series pumps for varying density fluids

Claim 1

A MULTI-PURPOSE PUMP COMPRISING A HOUSING HAVING AN INTERIOR COMPRESSOR PORTION HAVING AT LEAST ONE LOBE, AND AN INTERIOR LIQUID PUMPING PORTION ADJACENT SAID COMPRESSOR PORTION, INLET MEANS FOR DIRECTING FLUIDS IN THE GASEOUS AND LIQUID STATE TO SAID COMPRESSOR PORTION, ANNULAR VOLUTE DISCHARGE MEANS EXTENDING ABOUT SAID LIQUID PUMPING PORTION, SAID COMPRESSOR PORTION INCLUDING, A DISCHARGE, A SYMMETRICAL ANNULAR ROTOER HAVING RADIALLY EXTENDING BLADES AND A PAIR OF ANNULAR END SHROUDS FORMING THEREWITH A PLURALITY OF RADIALLY EXTENDING DISPLACEMENT CHAMBERS, SAID LIQUID PUMPING PORTION INCLUDING A LIQUID IMPELLER BLADES INTEGRAL WITH AN END SHROUD OF LIQUID IMPELLER ADJACENT SAID ROTOR HAVING A PLURALITY OF ENCLOSED IMPELLER BLADES INTEGRAL WITH AN END SHROUD OF SAID ROTOR AND SHAPED TO PROVIDE A CENTRAL INLET, WHEREBY TO TAKE FLUIDS IN CENTRALLY FROM THE DISCHARGE OF SAID COMPRESSOR PORTION AND DIRECT SAID FLUIDS TO SAID VOLUTE DISCHARGE MEANS, AND SHAFT MEANS CONNECTED TO SAID IMPELLER FOR IMPARTING ROTATION TO SAID ROTOR VIA ROTATION OF AND IMPELLING; SAID COMPRESSOR PORTION, AND SAID COMPRESSOR ROTOR HAVING A CAPACITY TO PUMP AND COMPRESS ITS FULL DISPLACEMENT VOLUME OF INTAKE VAPORS AND GASES OVER SAID PUMPS DESIGNED PRESSURE RANGE AND TO DISCHARGE SAID COMPRESSED VAPORS AND GASES TO SAID IMPELLER, SAID IMPELLER HAVING A CAPACITY TO PUMP SUBSTANTIALLY ALL LIQUID OVER THE SAME DESIGNED PRESSURE RANGE AND TO THEREBY REDUCE THE PRESSURE AT THE DISCHARGE OF SAID COMPRESSOR PORTION WHEN SUBSTATIALL NO GAS AND VAPOR IS PRESENT AT THE INLET OF SAID COMPRESSOR PORTION WHEREBY SAID COMPRESSOR PORTION IS ONLY REQUIRED TO HANDLE SUBSTANTIALLY ALL LIQUID OVER A GREATLY REDUCED PRESSURE RANGE.