Compact eccentric screw pump
AssigneeNetzsch-Mohnopumpen GmbH
InventorHelmuth Weber
Life of this patent
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Abstract
The invention relates to a compact eccentric screw pump including a sliding articulation. The long-lasting operation of the pump is ensured by a plurality of functions. According to the invention, both the reaction pressure resulting from the transport pressure and the concomitant phenomena emerging from the eccentrically rotating rotor and acting on the articulation and the drive are approximately equalized.
Claims21
An eccentric screw pump with a stator with a screw-shaped cavity and a screw-shaped rotor eccentrically arranged in said cavity, whose rotor head is connected with a sliding joint, wherein between the rotor and sliding joint a seal is seated which follows the eccentric rotor movement, characterized in that the seal consists of at least a slide ring and a sealing disc and a rotor head or a rotor extension in the region between the rotor and the sealing disc has at least one diameter reduction.
Dependencies are inferred from the claim text.