Sulzer Management Ag

Matti Koivikko

Sami Virtanen

Teemu Gasman

Jussi Matula

Jussi Ahlroth

Kalle Tiitinen

Jouni Vartiainen

Hannu Heiskanen

Teemu GÅSMAN

A multi-stage centrifugal liquid pump includes a housing, impellers, and an assembly to compensate axial forces in the multi-stage centrifugal liquid pump. The assembly includes a shaft arranged rotatably to the housing, a balancing drum arranged to the shaft inside the housing, the balancing drum having a first axial end surface and a second axial end surface, the first axial end surface in flow communication with a stage of the pump adjacent to the balancing drum, the balancing drum being a multistage balancing drum, including at least two drum sections, and a circumferential axial space arranged between the at least two drum sections, the drum sections having a first radius.

Multi-stage centrifugal pump comprising an assembly for compensating axial forces

Volute casing for a pump

Portion of volute casing for a pump

The present invention relates to a centrifugal pump, the impeller of which comprises a shroud () with at least one solid and rigid working vane (), and at least one solid and rigid rear vane (), the at least one working vane () having a leading edge region (), a trailing edge region (), a central region (C), a side edge, a pressure face () and a suction face (), the at least one solid and rigid rear vane () having a trailing edge region, a side edge, a pressure face and a suction face. The trailing edge region () of the at least one working vane () is rounded by means of a rounding to have a thickness greater than that in the central region (C).

Impeller for a centrifugal pump

An intake channel arrangement includes an intake channel. The intake channel includes a first end with a first inner diameter, and a second end with a second inner diameter, the second inner diameter being smaller than the first inner diameter, a cross-sectional flow area and an adapter section arranged between the first and second ends, a first channel portion with a surface and the first inner diameter, an annular convex curvature surface joining at an angle to the surface of the first channel portion, the angle being 90&#xb0;-110&#xb0; between the surface of the first channel portion and a tangent of the convex curvature surface having a tangent point in an intersection of the surface of the first channel portion and the convex curvature surface, the annular convex curvature surface reducing the cross-sectional flow area from the first inner diameter to the second inner diameter.

Intake channel arrangement for a volute casing of a centrifugal pump, a flange member, a volute casing for a centrifugal pump and a centrifugal pump

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Kotka, Finland

Matti Koivikko