Abstract: A device for treating a preferably cellulose containing suspension, comprising a housing (110) on a stand (112), characterized in that it comprises an injection chamber (132) limited by two disc-shaped wall members (134) arranged so as to rotate about a center of rotation (C') common to the axle, in that at least one inlet opening (130) is disposed in the inner part of the chamber (132) for the suspension to be treated, in that outlets (167) for the treated suspension are disposed in an outer part (166) (the acceptance space) of the injection chamber (132), in that extraction chambers (170) are disposed outside the wall members (134) of the injection chamber (132), in that openings (164) for filtrate are disposed between the injection chamber (132) and the extraction chamber (170) within at least one annular zone of the radial extent of the wall members (134), in that outlets (130) for filtrate are arranged from the extraction chambers, and in that the size of the injection chamber is variable.

Abstract: A method for washing a fibre suspension including the steps of feeding the suspension into an annular displacement space, supplying a fluid through a permeable outer surface of the space, rotating the space to establish a fibre layer between the fluid supplied through the permeable outer surface of the displacement space and a remaining part of the fibre suspension.

Abstract: An apparatus for mixing a first fluid into a second fluid that comprises a housing (1) having a flow chamber (39) for the second fluid, a flow restrictor member (6) in the flow chamber, and holes (18) for introducing the first fluid into at least one gap (15, 16) between the flow restrictor member and those walls (5, 10) of the flow chamber (39) facing towards the flow restrictor member. The flow restrictor member and flow chamber, in a plane transversely to the principal flow direction (31) of the second fluid, each has the shape of a wedge. Gaps (15, 16) are formed between each of those two sides of the flow restrictor member that converge in a wedge shape and those walls of the wedge-shaped chamber facing towards the flow restrictor member. The holes (18) for introducing the first fluid are disposed in the region of the gaps (15, 16).

Abstract: A screen dram for the dewatering and/or washing of cellulose pulp, comprises a first cylinder (2) made from non-stainless material, which is rotatable about its axis (5); a cylindrical screen plate (6) arranged coaxially on the outside of the first cylinder, but at a distance from it, and between the screen plate and the first cylinder an annular chamber (7) which can receive liquid which has passed through the screen plate, which chamber contains passages (26) which extend in the axial direction towards one or both ends of the drum for the withdrawal of the screen liquid. The chamber (7) is lined with stainless steel (8) in the form of one or more cylindrical plate sections (8a, 8b . . . 8n). These, by virtue of shrink joints, can be joined to and bear in seal-tight arrangement against the cylindrical casing of the first cylinder. Preferably, the stainless steel contains at least 5% molybdenum.

Abstract: A device for treating a preferably cellulose-containing suspension, comprising a housing (1) on a stand (2).

Abstract: An apparatus for mixing pulp and fluid includes a housing with a center line an inlet and outlet for the pulp; an inlet for the supply of fluid and two walls are arranged in the housing and have opposite sides which between them define a gap-shaped surface through which the pulp will flow and has inlet and outlet openings communicating with the pulp inlet and outlet respectively; the walls are arranged concentrically in the housing and are non-rotatable with opposite sides thereof being arranged to extend around the central line of the housing, spaced therefrom, the gap-shaped space thus acquiring the shape of a concentric annular gap; the annular gap has an extension in excess of 20 mm in the main flow direction of the medium flowing through it; there is a distribution chamber communicating with and arranged axially upstream of the annular gap in order to distribute the pulp uniformly around the entire concentric inlet opening of the annular gap.

Abstract: A wall means intended for apparatus for separation of a liquid-containing portion from a liquid-containing particle material which is fed through the apparatus in a predetermined direction (A). The wall means comprises a plurality of bar profiles defining continuous slots between them to allow through the liquid-containing portion. According to the invention each bar profile has on its inner side facing the liquid-containing particle material a ridge portion extending between the ends of the bar profile and being provided with two continuous guide surfaces which, as seen in a cross section of the rod profile, are inclined in relation to the drainage direction (B) of the liquid-containing portion through the adjacent slot. Furthermore, the inclined guide surfaces in their longitudinal direction are disposed to coincide with the predetermined direction of feed (A) of the liquid-containing particle material in order to influence the liquid-containing particle material to maintain this direction of feed (A).

Abstract: A suspension of fibrous cellulose pulp is separated into at least two portions in an apparatus comprising a closed housing having inlet and outlets, and a rotor means provided with projections, said rotor means comprising a first rotor part surrounded by a screening means, the first rotor part and the screening means in their axial extension forming a screening zone and being arranged to cooperate with each other during rotation of the first rotor part for screening the suspension in a fluidized state. The rotor means comprises a second rotor part located immediately adjacent to the first rotor part, a rigid, water-impervious wall member surrounding the second rotor part.

Abstract: An apparatus for screening a suspension of fibrous cellulose pulp is described which comprises a housing and a rotor shaft, the housing having an inject section, first and second screening sections, each of which comprising rotor members mounted on the rotor shaft and a cylindrical screening plate cooperating therewith and defining an outer accept chamber and an inner screening chamber, and a reject section for the removal of fiber suspension remaining at screening, the inject section communicating with the screening chamber of the first screening section. According to the invention the inject section is disposed between the first screening section and the second screening section, and the screening chamber of the first screening section communicates with the adjacent reject section.

Abstract: Effective separation of unwanted particles, such as tramp material, is effected from a paper pulp suspension (typically a medium consistency suspension, e.g. having a consistency between 5-15 percent). A generally annular opening is defined by a disc connected to a rotating shaft, and a ring stationarily mounted to a housing. The housing includes a pulp inlet, a pulp outlet, an inlet chamber, and an outlet chamber, with a separated-out particles outlet communicating with the inlet chamber, preferably extending downwardly from it. A rotating element having a plurality of generally radially extending projections, is also mounted on the shaft, adjacent the disc, and the projections cover the annular opening (radially spanning it) at spaced locations along its circumference. The projections may be teeth-like structures, or pegs, and preferably have their leading edges, viewed in the direction of rotation, sloping with respect to the radial direction.

Abstract: A feeding device placed between an infeed conveyor and two longitudinal lumber conveyors for directing pieces of lumber, e.g., logs, fed thereto to one or the other of the two longitudinal conveyors which carry the logs for further processing. The first unit in the feeding device arrangement is a singlepiece feed conveyor, with a photo cell device, which receives a log from the infeed conveyor. The next station is a vertically swingable flap disposed over a gap which can be bridged by the flap. Under the gap is a stepwise drivable winged wheel or set of wheels which is offset adjacent and above one of the longitudinal conveyors which also has an associated photo cell device. Next in the device and located adjacent the base of the flap is a stepwise drivable transverse conveyor which receives logs passing over the flap and has its discharge adjacent and above the second longitudinal conveyor which also has an associated photo cell device.

Abstract: An improved log turner including a charge conveyor for feeding logs across an opening onto a carrying chute aligned with the charge conveyor. A discharge conveyor is located beneath the opening perpendicular to the charge conveyor. One pair of arc-shaped push-off arms is pivotally attached near the opening on opposite sides of the charge conveyor and the carrying chute. One arm of each pair of arms, opposite to one another, is pivoted to push-off and pivot a log resting on the charge conveyor and the carrying chute into the discharge conveyor.

Abstract: A lumber lifting device for pieces of lumber transversely fed into the device in an elongate soaking basin. The lifting device has a concave hoisting surface with a front edge which aligns with an inclined ramp below the water level of the basin in a first reception position to receive a piece or pieces of lumber. The lifting device is rotated less than one-half a revolution to a second dumping position above the water level of the basin to discharge the piece or pieces of lumber. A curved stopping surface is connected to the front edge of the hoisting surface to prevent pieces of lumber from interfering with the rotation of the lifting device.

Abstract: A longitudinal lumber conveyor has sets of transverse tooth wheels aligned on each side of the axis of the conveyor. The tooth wheels are mounted on a lifting frame which may be lifted above the conveyor transport plane to rotate pieces of lumber thereon. After the pieces of lumber have been inspected the lifting frame and tooth wheels thereon are lowered and the pieces of lumber are then conveyed to the next processing station.

Abstract: A longitudinal lumber conveyor is provided with an adjustable end stop for cutting a piece of lumber into several pieces. The adjustable end stop is mounted on a slide which is adjustable hydraulically beneath the plane of the conveyor. The slide is operable between adjustable end switches which are activated to indicate the desired position of the slide. The slide may be moved between the various end positions when a photocell device mounted on the slide senses that a piece of lumber is not present at the photocell device. The slide has rotatable stop arms mounted on a shaft of the slide which are hydraulically rotatable from a first stop position above the plane of the conveyor to a second position below the plane.

Abstract: An elongate soaking basin has a screen mounted on a movable frame. The screen is vertically movable into and out of the soaking basin. The soaking basin has a compression wheel feeding pieces of lumber transversely into the soaking basin against the screen. The pieces of lumber are compressed between the screen and the compression wheel. The screen is pivotally supported between two limit positions in the movable frame and when the screen is forced against one of the limit positions, the frame is moved to reposition the screen, thus keeping the pieces of lumber aligned and under the proper compression.

Abstract: A device for holding lumber to be cut including a conveyor system with an abutment plate and clamping arm to clamp the lumber against the plate. A saw is movable in a plane transverse to that of the conveyor to engage and cut the lumber at a side thereof opposite that engaged by the clamping arm.

Abstract: A device for feeding pieces of lumber, one by one, from one location to another location and comprising a plurality of carrier members secured in substantially parallel relation along the length of a frame which bridges between an input location and a delivery location. Each of the carrier members are formed to define a downwardy inclined slope having a stop at the lower end thereof. The upper end of the slope is adapted to receive lumber from the input. An elongate shaft is journaled through the carrier members. A clinch member is rotatably journaled on said shaft and located adjacent each of the carrier members. A stopping arm is provided disposed between each carrier member and adjacent clinch. A pivot pin is attached to each carrier member and a guide pin is carried by each clinch, the stopping arm is rotatably journaled on the pivot pin, one end of the stopping arm being movably engaged with the guide pin and the other end carrying a stop formation.