Patent ID: 11933313
Assignee: WATSON MARLOW GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 13:
14. A pump comprising:
at least one rotor rotatable about an axis of rotation,
a pump housing surrounding the rotor, wherein a pump channel is formed between a radially inner surface of the pump housing and a radially outer surface of the rotor, and
a seal assembly sealing the pump channel to an end surface of the rotor, the seal assembly comprising:
a sliding body having a sliding surface, the sliding body being an annular member that is provided on the rotor and which extends perpendicular to an axial direction of the rotor, the sliding surface is formed of a ceramic material, the ceramic material being one of a silicon carbide, SiC, sintered silicon carbide, SSiC, and tungsten carbide, TC;
a sealing sleeve provided in the pump housing, wherein a surface of the sealing sleeve defines a static surface, the sealing sleeve includes a cylindrical base body and a collar extending radially outwardly from the base body, the sealing sleeve being supported on the pump housing via the collar, wherein a surface of the collar is the static surface; and
a first elastomer element attached to the static surface and pressed against the sliding surface in the axial direction.