SCREW VACUUM PUMP PROVIDED WITH ROTORS

A screw vacuum pump (1) has rotors (5), bearings (7, 8), a casing (4), a suction side (15), and a delivery side (24). Each of the rotors includes at least two rotor sections, a suction side rotor section (17) and a delivery side rotor section (18). The two rotor sections are separately constructed a...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	DREIFERT, THOMAS, BAHNEN, RUDOLF
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A screw vacuum pump (1) has rotors (5), bearings (7, 8), a casing (4), a suction side (15), and a delivery side (24). Each of the rotors includes at least two rotor sections, a suction side rotor section (17) and a delivery side rotor section (18). The two rotor sections are separately constructed and joined together in a positive, form-fitting or friction locking manner. The suction side rotor section is preferably larger in diameter and constructed with looser tolerances as compared to the delivery side rotor section. The suction side rotor is preferably of an inexpensive material such as aluminum while the discharge side rotor is preferably constructed of a higher performance material such as stainless steel. The rotor sections are supported on a rotor shaft (6) into which cooling fluid is injected through a cooling pipe (33). Cooling fluid from the shaft is also circulated through the bearings and passages in the casing eventually reaching a sump (37) in preparation for recirculation.