Valmet Technologies Oy

Valmet Technologies, Inc.

Marko Loijas

Tomi Iisakkila

Håkan Sjöström

Matti Kaarineva

Juha-Pekka Huhtanen

Timo Kononen

Markku Partanen

Timo Könönen

Marcus Sjölund

Matti Kaarineve

Karl Lönngren

Håkan SJÖSTRÖM

A blade segment () for a refiner () for refining fibrous material has first () and second () end edges opposite one another in a direction of a longitudinal axis (LA) of the blade segment (), and first () and second () side edges which extend between the first end edge and the second end edge. The blade segment has a refining surface () with blade bars () and grooves () therebetween on a front surface () of the blade segment (). At least one side edge () has at least two edge portions () arranged to deviate from the direction of the longitudinal axis (LA) of the blade segment () and connected by an elbow () between each two edge portions ().

Blade segment for refiner

A blade segment () for a refiner () for refining fibrous material has a first () and a second () end edge and a first () and a second () side edge opposite to the first side edge () and a refining surface () having blade bars () and grooves () therebetween on a front surface (). At least one opening () is on at least at one side edge () which extends through the whole thickness of the blade segment body (). There is at least one feed groove () on the refining surface, the feed groove () extending from the opening and crossing the blade bars and the blade grooves for feeding the material to be refined across the refining surface. The blade bars () of the blade segment are interlaced at the feed groove.

A blade segment () for a refiner () for refining fibrous material has first () and second () end edges and first () and second () side edges, the first () and second () side edges extending between the first () and second () end edges. The segment has a refining surface () with blade bars () and grooves () on the segment front surface (). At least one opening () at the side edge () extends through the whole thickness of the segment body () and towards the opposite side edge (). A guide element projects from the segment background surface () at the side edge which provides a guide surface that intensifies the feed of the material to be refined through the opening to the refining surface of the blade segment into the refining chamber of the refiner.

A blade element pair () for a refiner () is intended for refining fibrous material. Each blade element (′) of the blade element pair () has a refining surface () with blade bars () and blade grooves () extending along the blade element (′), and openings () extending through the blade element (′). The openings () in one of the blade elements (′) is at different axial (A) or radial (R) positions from the openings () in the other blade element (′) when the blade elements (′) of the blade element pair () are set substantially opposite to each other.

Refiner blade element

A blade segment () for a refiner comprises an inner end edge () and an outer end edge () and a first side edge () and a second side edge () opposite to the first side edge (), the first side edge () and the second side edge () extending between the inner end edge () and the outer end edge (), and a refining surface () comprising blade bars () and blade grooves () therebetween on a front surface () of the blade segment (). At least one side edge () of the blade segment () comprises at least one opening () that extends from the side edge () toward the opposite side edge ().

A blade element () for a refiner () for refining fibrous material has an inner edge () and an outer edge () and first blade bars () and first blade grooves () therebetween, the first blade bars and the first blade grooves extending toward the outer edge of the blade element. At top surfaces of the first blade bars there are second blade bars () and second blade grooves () therebetween. At least some of the second blade bars () lying on an outer end portion () of the blade element () have a width which is larger than a width of second blade bars () lying on an inner end portion () of the blade element () and/or is increasing in direction toward the outer edge () of the blade element ().

Blade element for refiner

A blade element () for a refiner () for refining fibrous material has a blade element body () and blade bars () and blade grooves () therebetween. Bottoms of the blade grooves () have, in the longitudinal direction (LD) of the blade grooves, a variable depth profile comprising alternating high points (') and low points (&#x2033;) so that there is a phase shift (X) between the high points (&#x2032;) and the low points (&#x2033;) of the variable depth profiles of the bottoms of the adjacent blade grooves (). Also, a refiner () for refining fibrous material and a method for manufacturing the blade element () for the refiner ().

Growing community of inventors

Espoo, Finland

Marko Loijas