Abstract: In a multi-ply headbox, the nozzle chamber is subdivided by rigid partition walls into a number of nozzle chambers, and the slice openings or outlet slices are adjustable independently of one another. This is accomplished by providing a pivotable mounting of the partition wall or walls in a guide block, for instance, such pivotable mounting being accomplished by a substantially cylindrical shell or cup bearing structure. The desired pivotable movement or adjustment of the rigid partition wall can be undertaken by an inclined groove-cam guide arrangement effective at a projection of the partition wall or by pressure cushions, such as pressure hoses effective at both sides of the projection.

Abstract: The refiner for processing a fiber stock suspension for paper fabrication comprises at least one substantially planar grinding disc equipped with a conventional set of grinding tools. This substantially planar grinding disc coacts with a perforated plate. The perforations or holes of the perforated plate are provided at a side of the perforations or holes which confronts the grinding disc with grinding edges suitable for achieving a desired refinement processing or treatment of the fiber stock suspension. These perforations or holes experience a force flow of the fiber stock suspension through such perforations or holes.

Abstract: An arrangement for separation by flocculation of flocculable substances contained in a suspension, as such is used particularly for purifying the backwater of deinking installations for waste paper processing, comprises a container supplied by a conduit with a suspension coming from a reservoir and admixed with flocculating agents and with air. The container contains a rotor with vertical shaft from which two arms extend outwardly at different heights. The suspension to be purified is delivered by the shaft and the upper arm, and by means of the lower situated arm leading the upper arm at an acute angle the purified water is removed. The floated-up flocculated substances are withdrawn from the surface as flotation scum and optionally by means of a conveying device through a scum conduit.

Abstract: The journals of two vanes of the wind turbine are connected with one another by a connecting rod 26 for absorption of the centrifugal forces of the vanes. Bearings with spherical faces are arranged between the ends of the connecting rod and the journals. The connecting rod is prestressed with a tensile force by means of a tubular bushing which surrounds the rod and which cooperates with threaded rings on the rod to tension the rod.

Abstract: The front wall and support arrangement is shaped as a stiff support structure extending across the entire machine width above a slice chamber. The support structure is deformed due to its inherent weight and because of the pressures and temperatures prevailing in the slice chamber. To counteract these deformation effects the support structure is supported by a support carrier of about the same length as the support structure. To attain a substantially lower structural height, the support carrier is arranged relative to the support structure such that an intermediate space prevails between the lower wall of the support structure and the support carrier. This intermediate space accommodates force-generating support elements. Each of the force-generating support elements is provided for only a portion of the surface or area to be supported in the intermediate space.

Abstract: A hydraulic adjustment motor containing a piston-and-cylinder unit is provided at the roll surface of a roll to be moved to position the roll surface relative to another roll surface of a further roll. Each adjustment motor is arranged between the related roll surface to be moved and its related roll stand. A regulation device is arranged between a pressure source, the pressure chamber of the adjustment motor and a hydraulic medium vessel. This regulation device regulates impingement of the pressure chamber with different pressures up to the maximum pressure of the pressure source and regulates the outflow of a selected volume of the hydraulic medium out of the pressure chamber, correlated to the desired lowering of each roll surface, during lowering of the roll surface and for maintaining a residual volume of the hydraulic medium. Consequently, there is provided a defined relative position between the roll surfaces.

Abstract: White water at a high speed of current occurs in the region of a forming roll in a paper machine running at a high speed. The white water is caught in a white water trough which is provided with deflection vanes and is carried substantially at the initial speed by means of a duct (1) out of the ground plan of the paper machine to a stilling tower (2) standing adjacent to the paper machine, to feed the inner wall of a screen wall (3) of a screen cage, which wall is arranged in the stilling tower. The wall (3) is curved and has openings (4) for the white water to pass through. They are designed to peel off in layers the film of white water which is sent along the wall (3) and to deflect the jets of white water passing through the openings (4) radially outwards to the wall (3) against an outer wall (5) of the stilling tower (2), where the actual deceleration of the current takes place in several individual jets.

Abstract: A pressing machine includes a roller and a pressing shoe which can be moved towards and away from the roller to exert pressure on the roller or on a material in a gap between the shoe and the roller. The shoe is mounted in a pressure chamber to which hydraulic pressure medium can be supplied to move the shoe. Upon movement towards the roller, the shoe applies pressure over a zone extending for a part of the circumference of the roller. Means is mounted on the pressing shoe for altering the length of this zone in the circumferential direction of the roller. To this end, the shoe may have two movable jaws which establish said zone, the jaws being movable by adjusting means over a cylindrical surface of said shoe which has substantially the same centre of curvature as the roller. The pressing shoe is particularly advantageous in a paper machine for dewatering a web of paper or for supporting the rollers of a rolling apparatus.

Abstract: A method of, and washing machine or washer for, washing stock suspensions, wherein a rotatable cylinder having a solid smooth surface is encircled along a portion of its circumference by a movable endless wire or filter band. The stock suspension to be dewatered and washed is infed by a flat jet nozzle between the rotatable solid cylinder and the movable endless wire. The fiber web formed between the rotatable solid cylinder and the movable endless wire has a weight of less than 100 grams per square meter, preferably 30 to 70 grams per square meter. The wire speed and the circumferential speed of the rotatable solid cylinder is in the order of about 400 to 1,200 meters per minute. After through-flow of the stock suspension between the rotatable solid cylinder and the movable endless wire, the dewatered and washed fiber material is removed from the movable endless wire and the rotatable solid cylinder, respectively, collected in a collecting container and delivered for further processing.

Abstract: In a particularly simple construction a twin-wire papermaking machine possesses a reduced number of rolls as well as a compact arrangement. The foregoing and the greatest possible velocity of a through-passed paper web can be obtained by employing non-suction rolls, instead of suction rolls, in a pressing section of such papermaking machine, by upwardly entraining the paper web conjointly with a top or upper wire of a twin wire arrangement and by transferring the paper web to a pressing roll having a smooth surface, and furthermore, by providing at the pressing roll an extended or wide-nip supporting shoe by means of which the paper web is dewatered in an extended pressing nip zone. Advantageously, the dewatered paper web is taken off from the surface of the pressing roll in a downward direction and fed to a drying section of the papermaking machine. The drying section may be arranged below the pressing section and directly adjacent the bottom or lower wire of the twin wire arrangement.

Abstract: In a wet press for dewatering a web of material, for instance a paper web, a contact pressure device is provided which presses against a rotating roll and exerts an incrementally increasing pressure in the direction of travel of the paper web. The contact pressure device comprises only a single pressure element arranged in the direction of travel of the paper web. The pressure element has two or more pressure pockets arranged sequentially in the direction of web travel and which are connected with a common pressure chamber by conduits. The increasing contact pressure is attained by arranging the pressure element unsymmetrically in relation to the pressure chamber. The effective pressure cross-sectional areas of pressure pockets arranged sequentially in the direction of web travel can additionally be reduced in the direction of web travel or the cross-sections of the associated bores can be increased.

Abstract: The sorting apparatus contains a rotor equipped with blades or vanes which move along a screen or sieve located beneath the rotor. The screen forms a partial surface of a body of revolution, such as a partial surface or section of a cylinder. The fiber stock mass which has not moved through the screen is upwardly propelled into a turbulence chamber or space by the action of the rotor and again falls back onto such rotor or another rotor. A domed guide surface serves to guide the fiber stock mass.

Abstract: The flotation apparatus comprising a container having a free liquid level of the fiber stock suspension which is fed essentially horizontally to the container by at least one infeed device. The infeed device contains at least one aeration element having an outlet cross-section located at a predetermined region which is 100 to 600 mm, preferably 50 to 250 mm, below the liquid level of the fiber stock suspension in the container. Between the end of the aeration element and the discharge mouth or opening of the infeed device which opens into the container there can be arranged an essentially horizontally extending starting path for quieting or stabilizing the flow of the fiber stock suspension. This starting path is provided at its initial region with an ascending cover member at which merges a channel having a free liquid level.

Abstract: The method for the conditioning of crushed soya bean material for flocculation utilizes a fluidized bed installation with heat exchangers incorporated in a reaction chamber. The crushed bean material passes through the fluidized bed continuously, with a dwell time of 4 to 8 minutes, at a temperature of between 55.degree. to 75.degree. C.

Abstract: A ring-gap nozzle for distributing a fluid medium over a plate, for instance over a bottom plate in a fluidized bed dryer, having two dish-shaped pressed parts suiting to each other complementarily being assembled in facing relationship and nested into each other and forming a ring gap through which the medium, deflected by 90.degree. or more, flows to the bottom plate, preventing both the settling of the product to be treated in the fluidized bed dryer on the plate as well as the reflux of the product backwardly into the nozzle when the flow of medium is cut off. This type of nozzle is simple to manufacture and does close the passage without any complicated manipulation automatically.

Abstract: On an intermediate shaft connected to a propeller shaft there are supported a stationary housing and a distributor or separator ring structure limiting two annular passages in the housing which can be selectively impinged with pressurized oil. The annular passages are connected to two oppositely effective working spaces of a servo motor of the adjustable pitch propeller by control passages extending through the intermediate shaft and the propeller shaft. The separator or distributor ring structure comprises axial sections, each of which is formed of one part in circumferential direction and is fixedly connected in axial direction to an axial section thereof associated with the same annular passage by web or bridging members bendable in radial direction. Each axial section is sealingly guided in a cylindrical bore of the housing by a respective sealing ledge protruding from the outer circumferential face thereof.

Abstract: The flotation apparatus has a vessel or container into which vortex or turbulence channels lead. These vortex channels supply the fiber suspension or stock to the vessel and are provided with at least one stepped enlargement. An air conduit supplying flotation air opens into the vortex channel. The vessel is substantially cylindrical about a vertical axis and is provided in its upper region with a central conduit or pipe for extracting the flotation foam. In the lower region of the vessel a conduit for extracting the recovered good stock is disposed tangentially.

Abstract: According to the method the stock suspension is moved across a mass force field due to gravity or centrifugal acceleration in the form of stock stream or current and contacts a pick-up surface moved in conjunction with the stock stream and at substantially the same velocity. The apparatus may comprise a housing in which a turbulent or vortex flow is generated and containing a rotor therein which possesses the pick-up surface. Further embodiments have a guiding wire or screen which is moved along a pick-up cylinder or is trained around the same and upon which there is formed a layer of the stock suspension by using a stock supply device. A band, for example a wire band, may be provided to pick-up the contaminants.

Abstract: In a wet press for dewatering a web of material, for instance a web of paper, a contact pressure device presses against a rotating roll and exerts a pressure which increases in the travel direction of the web of paper. For this purpose, several rows of contact pressure elements are arranged sequentially in the travel direction of the web of paper. In each row the contact pressure elements are arranged side by side transversely to the travel direction of the web of paper. In order to circumvent a differential dewatering at the location of the contact pressure elements and at the gaps between the contact pressure elements of a row, the contact pressure elements of successive rows are shifted or staggered in relation to one another transversely to the web of material such that they mutually overlap. This prevents the arisal of strips in the paper being processed.

Abstract: A vane shaft is suspended within a container in a pendulum or swinging fashion at its drive shaft by means of a pivotable coupling. The drive shaft can constitute the output shaft of a drive arrangement composed of a drive motor equipped with a transmission or gearing unit and supported upon a radial arm member. The drive motor together with its transmission also can be arranged in or at a central axis of the orbiting or revolving path of movement of the vane shaft, and the drive shaft can connect the drive motor equipped with the transmission with the vane shaft in the manner of a Cardan shaft. The vane shaft also can be directly suspended at the vertical output shaft of the transmission or gearing arrangement by means of a pivotable coupling. At the lower end of the vane shaft there is secured a buoyant or float body member serving for the lateral deflection of the vane shaft.