Screw machine

A screw machine (10) is provided. The screw machine (10) comprises a rotor housing (12), a conjugate pair of intermeshing rotors (14, 16), an outlet casing (13), and a conformable coating (44, 64). The rotor housing (12) has a pair of parallel, overlapping bores (12-1, 12-2). The conjugate pair of i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KHALIFA, HUSSEIN E, EATON, HARRY E, COOPER, CLARK V, KUMAR, KESHAVA B, MCCLUSKEY, PHILIP H, DROST, RONALD T, BUSH, JAMES W, DU, HONG, LIN, RENG RONG, DEBLOIS, RAYMOND
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS SPRAYING OR ATOMISING IN GENERAL STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A screw machine (10) is provided. The screw machine (10) comprises a rotor housing (12), a conjugate pair of intermeshing rotors (14, 16), an outlet casing (13), and a conformable coating (44, 64). The rotor housing (12) has a pair of parallel, overlapping bores (12-1, 12-2). The conjugate pair of intermeshing rotors (14, 16) are located in said bores, each of said rotors having helical lobes (14-1, 16-1) and intervening flutes (14-2, 16-2). The outlet casing (13) is disposed at a discharge end of said rotor housing (12). Each of said rotors (14, 16) has a discharge end (14-4, 16-4) facing said outlet casing (13). The conformable coating (44, 64) is disposed between said discharge ends(14-4, 16-4) of said rotors (14, 16) and said outlet casing (13). The coating (44, 64) is at least one of iron phosphate, magnesium phosphate, nickel polymer amalgams, nickel zinc alloys, aluminum silicon alloys with polyester, and aluminum silicon alloys with polymethylmetacrylate (PMMA), or other materials that yield elastically when a force is applied to the coating. Preferably there is further provided a member (90) located intermediate said discharge ends (14-4, 16-4) of said rotors (14, 16) and said outlet casing (13). The member (90) has a surface facing said discharge ends of said rotors. The conformable coating (92) comprising a coating disposed on said surface of said member (90). In another preferred embodiment, the conformable coating (44, 64) comprises a coating on the discharge ends (14-4, 16-4) of said rotors (14, 16) or on said outlet casing (13).