Enso-gutzeit Oy

Andritz Oy

Rotyx Oy

Harri Qvintus

Seppo Kokkonen

Simo Karjalainen

Mikko Pesonen

Jarkko Hytönen

Simo Toropainen

Asko Toropainen

Erkki Ruuskanen

Tuomo Sihvo

An arrangement for measuring the distance between at least one seal bar () and a rotating drum () of a drum displacement washer, including at least one sensor element () positioned inside the rotating drum () and configured to provide a signal indicative of the distance between the outer surface of the rotating drum () and the at least one seal bar (); and a signal transfer element () configured to transfer the signal outside the rotating drum ().

Method and arrangement for washer seal control

The disclosed embodiments relates an arrangement for tilting or turning a tool, the arrangement including at least one actuator for tilting and turning the tool, the actuator including at least a frame part adapted to be closed by a cover, the frame part and the cover enclosing a chamber portion () where a blade part having one or more blade gaskets is provided to divide the chamber portion into separate chamber spaces, the blade part being connected, at its first end, to a shaft, the second end of the blade part being adapted move reciprocally in the chamber portion, rotating the shaft at the same time. The joint between the frame part and the cover is sealed by a gasket contacting the blade gaskets.

Arrangement for tilting or turning a working instrument

A packing arrangement for sealing the outer surface of a rotary, drum-like object, such as a washer used in manufacturing cellulose, with a non-rotating annular packing, which is most advantageously composed of one or several side-by-side packing fillets, e.g. braided packings, the arrangement including a circular packing body which together with the rotating drum surface, defines a space in which the packings have been installed. The drawback encountered in existing arrangements is wear of the packing, and consequent leakage. In the packing arrangement of the invention, this has been solved in that the packing body is, at least in its radial direction, elastically supported so that, as the drum-like object rotates, the packings yield to the movements of the drum surface arising from radial displacements of the drum.

Packing arrangement for sealing the surface of a rotary drum like object

An apparatus for washing cellulose, wherein the cellulose is conducted through between a rotary drum and a stationary shell encircling it, in the form of a layer supported by the permeable mantle surface of the drum. The principle of operation of the apparatus is: conducting washing liquid through the shell, through compartments located under the mantle surface of the drum and serving as washing liquid collectors, and through a valve system composed of a rotary part associated with the drum and a stationary part placed thereagainst, several times through the cellulose layer so that when the apparatus is operating the washing liquid at the same time moves in the direction opposite to the direction of rotation of the drum, stepwise, through the apparatus. It is essential in the invention that the valve system is composed of annular parts located at one end of the drum, their radius substantially equalling that radius on which the compartments under the mantle surface of the drum are located from the shaft of the drum, and that the part of the valve system rotating along with the drum comprises an aperture by which the ends of the compartments are joined to the valve system. By this design, the delay occurring in the washing liquid transfer has been reduced and the controllability of the washing process has been improved.

Apparatus for washing cellulose with a rotary drum

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Savonlinna, Finland

Harri Qvintus