Sandvik Intellectual Property Ab

Veolia Water Solutions & Technologies Support

Kjell-Åke Svensson

Per Larsson

Emil Svensson

Bengt-Arne Eriksson

Knut Kjaerran

Johan Gunnarsson

Mauricio Torres

Percy Norrman

Anders Nilsson

Kent Nilsson

Mattias Nilsson

Filip Thysell

Mats Lindqvist

Ib Mortensen

Johan Gullander

The invention relates to a filter panel () for a drum filter () which is used for filtering off solid particles from a liquid. The filter panel () comprises a first side () being adapted to be attached to a drum () of said drum filter (), a second side () being adapted to receive a filter cloth (), and a plurality of through holes () extending from said first side () to said second side (), each hole () defining one or more side walls (). The filter panel () is characterized in that at least one of said holes () comprises an inclined side wall (). The invention also relates to a drum filter () for filtering liquid.

Filter panel with structures support grid and drum filter with said filter panel

A disc filter includes a filtrate holding tank disposed below a series of disc-shaped filter members supported on a drum. Filtrate from the holding tank is used to backwash filter media on the disc-shaped filter members. Filtrate is discharged from the holding tank via a filtrate conduit. Bypass water is directed through a bypass conduit in the disc filter and mixed with the filtrate downstream of the filtrate holding tank. This assures that the filtrate used to backwash the filter media does not include bypass water.

Rotary disc filter

The present invention refers to a module () for assembly of a filter frame () for at least one filter disc (not shown) of a rotatable disc filter, which filter frame is provided for supporting at least two filter segments (not shown), which filter segments together form the outer part of said filter disc. The module () comprises an intermediate member () intended to beat least partially provided between two adjacent filter segments. According to the invention, the intermediate member () comprises at least two parts () which are interconnectable with each other in the radial direction of the disc filter

Module for assembly of a disc filter

A gyratory crusher comprises a first crushing shell mounted on a crushing head, and a second crushing shell mounted on a machine frame, a crushing gap being formed between said first and second crushing shells. A method of controlling the operation of said crusher comprises measuring a parameter being representative of the stresses to which the crusher is exposed during the crushing of material, determining an average value of said parameter, determining a deviation value of said parameter, calculating a peak value based on said average value and said deviation value, comparing said peak value to a reference value, and controlling the operation of the crusher in view of said comparison between said peak value and said reference value.

Method and device for controlling the operation of a gyratory crusher

A gyratory crusher has a crushing head on which a first crushing shell is mounted, a frame on which a second crushing shell is mounted, and a driving device, which is arranged with a rotating eccentric to cause the crushing head to execute a gyratory movement for crushing of material. The crushing head is connected to the frame of a rotation-restricting arrangement, which comprises a beater in a tank. Spinning of the crushing head is restricted by the beater being braked, during operation of the crusher, by a liquid contained in the tank.

Gyratory crusher with arrangement for restricting rotation

An inner shell has a first part of a lug-notch arrangement, which first part is arranged to co-operate with a second part of the arrangement to prevent rotation of the inner shell relative to a crushing head. The inner shell has a contact surface in its upper portion and is arranged to be pressed towards the lower portion of the crushing head by a pressing force which is obtained by tightening at least two threaded bolts, which are arranged in the upper portion of the crushing head such that their longitudinal direction is substantially parallel to the symmetry axis of the crushing head.

Inner shell intended for a gyratory crusher, and method of attaching such a shell on a crushing head

A crusher has first and second crushing elements spaced apart to form a crushing gap therebetween. A measuring device is arranged to measure the instantaneous load on the crusher during at least one period to obtain a number of measured values. A calculation device is arranged to calculate a representative load value that is representative of the highest, measured instantaneous load during each such period of time. A control device is arranged to compare the representative load value with a desired value and to control the load on the crusher depending on the comparison.

Growing community of inventors

Limhamn, Sweden

Kjell-Åke Svensson