Velcora Holding Ab

Pedram Azadrad

Henrik Nedlich

Rifet Mehmedovic

Poul Anton Daugaard

Jesper Raabjerg Jensen

Daugaard Poul Anton Anton

A pump housing device for a fluid pump comprises a rear wall element comprising a rear surface turned towards an impeller. The rear wall element comprises an opening defining a cylindrical surface along a longitudinal central axis. The opening receives a rotating drive shaft of the impeller. A static seal element has a plane seal surface that seals against a plane seal surface of a rotary seal element mounted to the drive shaft and rotating with the drive shaft. The plane seal surface of the static seal element is turned away from the rear surface. One or more grooves extend through the rear wall element and through the rear surface and the cylindrical surface. Each groove has a bottom line that extends from the rear surface to the cylindrical surface.

Pump housing device for a fluid pump, and a fluid pump

The claimed invention concerns a holding device for application of a sealing member () on a shaft (). The holding device () includes a connecting mechanism () adapted to connect the sealing member () on the shaft (). The connecting mechanism includes an annular body () that comprises an inner surface () which, in an axial direction, is arranged at gradually decreasing radial distance from the shaft (). The connecting mechanism comprises at least a clamping element () arranged in a space between the inner surface () of the annular body and the shaft (), and a displacement mechanism () adapted to displace the clamping member in said axial direction relative to the annular body () to a position in which the inner surface () of the annular body presses the clamping element to the shaft. The claimed invention also relates to a mechanical sealing device including such a holding device and a hydrodynamic machine having such a mechanical sealing device for applying a sealing member on a shaft.

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Tullinge, Sweden

Pedram Azadrad