Abstract:
A method for the continuous manufacture of board from lignocellulosic material, where the material is disintegrated to particles and/or fibers, dried, glue-coated and formed to a mat and pressed to a finished board. The formed mat is heated with steam and thereafter compressed to near final thickness, whereafter it is pressed to a manageable board in a calibration section.
Abstract:
An apparatus for dewatering material suspensions during their passage between two press rolls (10), where liquid is pressed in by overpressure through the shell surfaces of the rolls, and the final dewatering takes place by pressing in a nip (11) between the rolls (10). The upper portion of the rolls (10) is surrounded by a casing (12) with inlets (14) for the suspension. An outlet for the material web is located beneath the nip (11), and doctor blades (16) are located in connection to both rolls (10) beneath the nip (11). The transfer of the dewatered material takes place by means of gravity.
Abstract:
A method and a system for continuous sampling for the analysis of a material mixture. A small portion of the material mixture is tapped from a space (1) through a sample tapping point (2), which is connected to a pipe coil (3). This pipe coil (3) comprises a pump (5) and a feed pipe (6) for controlled supply of dilution liquid for dilution to desired concentration. The pipe coil (3) opens (4) at the sample tapping point (2), and an adjustable portion of the flow in the coil is recycled to the space (1). Analysis equipment (9) is intended to be connected to the pipe coil (3).
Abstract:
A method of continuous manufacture of board of lignocellulosic fiber material where the material is disintegrated to particles and/or fibers, dried, glued and formed to a mat and pressed to a finished board. In a first step the formed mat is heated through by steam and compressed to an at least partially hardened board with substantially uniform density. In a second step the surface layers of the board are compressed to higher density and hardened in a calibration zone to a finished board.
Abstract:
A device for admixing a processing agent to a pulp suspension. The device comprises a cylindric lower portion (10) of a vessel with an agitator (11) fitted into the wall of said vessel portion, which agitator is intended to bring about a pulp flow across the vessel portion (10). Means are provided (13) for the supply of the processing agent to the pulp flow. A flow divider (15) is located in the vessel portion (10) diametrically opposite the agitator (11). Said flow divider (15) comprises a substantially vertical front distribution edge (16) and arc-shaped surfaces (17) extending from the distribution edge (16) one in each direction, which surfaces are substantially vertical and join the wall of the vessel portion (10).
Abstract:
A device for tying objects with wire, for example bales of fiber material. The device comprises a feed unit (11) for feeding and tightening the wire (12), an openable rail (14, 16) for guiding the wire around the object, a unit (17) for locking the wire end, a unit (18) for twisting a wire knot, a cutting unit (19) and a unit (20) for pushing out the knot. The drive means for the units for wire feed (11) and, respectively, twisting (18) are electric servomotors (24 and, respectively, 29).
Abstract:
A screen panel intended for screening fiber material and a method of its manufacture. The screen panel (1) is intended to be a portion of the jacket surface of a screen cylinder. Each screen panel is formed in one piece and provided with screen apertures (4) and is made of a wear-resisting unweldable material.
Abstract:
A device for distribution of pulp at the supply of the pulp to a container (19) for pulp flow. The device comprises an inlet (11, 22) for central connection to one end of the container (10) and a distribution chamber (14, 24) located after the inlet (11, 22), which chamber communicate with the interior of the container (10). The distribution chamber (14, 24) is defined in lateral direction by a cylindric wall (15, 25) and directly opposite the inlet (11, 22) by a surface element (16, 26). An adjustable overall gap is located between the cylindric wall (15, 25) and surface element (16, 26).
Abstract:
An arrangement for screening pulp suspensions, comprising a casing (1) with an inlet (5) for inject and outlets (16, 18) for accept and reject. Between a stationary screening member (2) located in the casing (1) and a drum-shaped rotor (3) located inside the screening member, a screening zone (4) is formed. The inject inlet (5) is provided for the supply of the pulp to the lower portion of the inside of the rotor (3). At least one opening (6) is provided in the upper portion of the rotor (3) for transferring the pulp to the screening zone (4). The inside of the rotor (3) is formed for moving heavy impurities to a chamber (8, 13) in connection to one end of the rotor (3).
Abstract:
An arrangement for screening pulp suspensions, comprising a casing (1) with inlet (6) for inject and outlets (10, 11) for accept and reject. Between a rotor (3) in the casing a screening zone (4) is formed. The inject inlet (6), reject outlet (11) and a scrap outlet (8) for coarse and heavy impurities are connected in the same horizontal plane to the lower portion of the casing (1). The connections are offset in relation to each other and defined from each other by walls (15-17).