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AssigneeLeybold Aktiengesellschaft
InventorsRoland Albert Müller, David Thomas Chrisp
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A screw pump comprising a housing defining a chamber and two screw rotors. Wherein each screw rotor comprises a rotor shaft and at least two displacement elements connected with the rotor shaft. Each displacement element having at least one helical protrusion. One of the displacement elements is a suction-side displacement element arranged in a suction-side section of the chamber. Another one of the displacement elements is a pressure-side displacement element arranged in a pressure-side section of the chamber. The suction-side displacement element is designed tapering in the conveying direction. The clearance between the pressure-side displacement element and the pressure-side section of the chamber at least partly decreases in the conveying direction. Furthermore, a screw rotor, a method of manufacturing a screw rotor and a use of a screw pump or a screw rotor.
Screw pump, preferably screw vacuum pump, more preferably dry running screw vacuum pump, comprising a housing comprising a wall, the housing defining a chamber and two screw rotors,
Screw rotor for a screw pump, preferably for a screw vacuum pump, more preferably for a dry running screw vacuum pump, comprising:
Method of manufacturing a screw rotor for a screw pump, preferably for a screw vacuum pump, more preferably for a dry running screw vacuum pump, comprising the steps of:
Dependencies are inferred from the claim text.