Abstract: “IMPROVEMENTS IN TAPER REFINER FOR THE DEFIBERING OF WOOD CHIPS AND SIMILAR MATERIALS”, comprising the superposition of a taper rotor (18) and an equally tapered stator (19), with refining faces directly facing each other, thereby, defining a refining zone which receives the material to be defibered, properly impregnated with vapor, from where this material leaves defibered and free of both vapors, that is, the vapor first introduced with the wood chips and the vapor generated during the defibering operation, with said rotor (18) consisting of a hub (20) as the means for attaching it to the motor drive shaft (16), interconnected by radial fins (21) to a hollow frustum housing (22-23), and also provided, at the smaller diameter end, with a front cover (24) featuring vapor passage holes (25) positioned between chip breaking blades (26), additionally, said rotor delimitates an internal sub-chamber (14) that accommodates a turbine formed by suction blades (15) rotating together with the rotor (18), fo

Abstract: A paper manufacturing conical-type pulp refiner comprising a support structure 1 for a framework 2 with a front lid 3, and defining a refining internal and conical chamber 4, with a single and axial exit 5 and a radial side exit 6. The refiner further including a refining set including a rotatory axis 7, with the end centered inside the refining chamber 4, where the refining set itself is mounted, composed by a stationary conical pair and by a rotatory conical pairs, the latter interlayed between those, forming two refining conical surfaces.

Abstract: The present invention discloses an improved rotor disc for a refiner and its method of formation. The invention comprises a plurality of blade members spaced apart by a spacer between each adjacent blade member. Dams may be provided on the spacers. In forming the preferred disc, the plurality of blades and spacers are secured one to the other to form a blade segment. A plurality of blade segments are affixed one to the other to, in turn, form the disc. The invention is characterized by an absence of any mounting plate or base member. The method of the invention is characterized by a continuous weld along either of the inner circumference or the outer circumference of the disc.

Abstract: The present invention discloses an improved rotor disc for a refiner and its method of formation. The invention comprises a plurality of blade members spaced apart by a spacer between each adjacent blade member. Dams may be provided on the spacer. In forming the preferred disc, the plurality of blades and spacers are secured one to the other to form a blade segment. A plurality of blade segments are affixed one to the other to, in turn, form the disc. The invention is characterized by an absence of any mounting plate or base member. The method of the invention is characterized by a continuous weld along either of the inner circumference or the outer circumference of the disc.

Abstract: A refining disc assembly for wood pulp or the like, particularly including a rotor disc and an intermediate disc of a coaxial assembly of three refining discs, comprises a hub having two or more radial peripheral fins, interconnected by an outer ring having spaced perforations for attachment thereto of a refining disc. The refining disc is formed of a carbon-steel, iron or stainless-steel frame and comprises two concentric rings, interconnected by radial rods. The internal ring contains perforations matching those of the hub. The refining disc receives on both faces thereof, a plurality of trapezoidal stainless-steel plates, attached thereto by welding, and with intermediate gaps which are filled with weld beads, the internal and external contours thereof being machined on a lathe, after which both faces of the so-obtained disc receive refining blades, attached by welding.

Abstract: The method of making a comminutor plate, particularly for pulp refining machines, includes the steps of arranging at least two separate annular support members concentrically and with radial spacing from each other, a set of elongated strip-shaped blades is arranged and welded in a predetermined relative distribution on the support members. A flowable solidifiable material is introduced in the spacing between the support members. The material is permitted to solidify to thus bind the support members to each other in the radial space therebetween.

Abstract: A disc refiner for pulp has a housing defining a chamber with an inlet and an outlet, three coaxial discs mounted in the chamber, and a shaft which rotates the central disc and extends with clearance through a large opening in one of the outer discs. The other outer disc is adjustable axially toward and away from the central disc and the central disc is movable axially of the shaft between the two outer discs. The stock enters via inlet and passes through the opening of the one outer disc. A portion of stock thereupon passes radially outwardly between the one outer disc and the central disc to be comminuted by ribs on the adjacent surfaces of the one outer disc and the central disc. The remaining portion of stock flows through several relatively large openings of the central disc and thereupon radially outwardly toward the outlet by passing between ribs provided on the neighboring surfaces of the central disc and the other outer disc. Each of the discs is a one-piece body.