초록 ▼

To uniformly and economically disperse liquids, via sprays of droplets, on surfaces of particles, a method moving the particles involves their rotary lifting, followed by their free falling, with a spray of droplets originating from a central area of the overall motion path of the particles. In a pr

To uniformly and economically disperse liquids, via sprays of droplets, on surfaces of particles, a method moving the particles involves their rotary lifting, followed by their free falling, with a spray of droplets originating from a central area of the overall motion path of the particles. In a preferred embodiment of the blending apparatus, a hollow drum is rotated about a near horizontal axis. Inside the drum, commencing at each end are cantilevered non-rotating shafts, each positioning one or more powered slightly conical discs selectively tiltable to ultimately disperse respective sprays of droplets from a central area. This central area is defined by particles being lifted while centrifugally, for example, as the drum of eight feet in diameter is rotated at twenty seven revolutions per minute held to the interior of the drum and then at a zenith locale the gravitational force becomes effective enough so the particles drop in an arcuate cascade path back to the interior surface of the drum to start another cycle. The cycles are predetermined to continue until the particles acquire the selective quantity of dispersed droplets on all of their surfaces. Then the particles leave the interior of the rotating hollow drum opposite the end of their entry into the drum. This method and apparatus is particularly useful in treating with liquid resin binders, and/or waxd emulsions, thin wood wafers, wood flakes, wood shavings, sawdust and other particles of like respective sizes, which often are subsequently collectively formed and pressed into products, such as wood wafer boards.

대표청구항 ▼

A blender used to effectively apply finely dispersed liquid droplets of resins and/or waxes, through surfaces of particles, comprising: (a) a hollow drum rotatably supported on a frame for rotation about a downwardly inclined axis and having nonrotatable ends; (b) a variable speed drive assembly to

A blender used to effectively apply finely dispersed liquid droplets of resins and/or waxes, through surfaces of particles, comprising: (a) a hollow drum rotatably supported on a frame for rotation about a downwardly inclined axis and having nonrotatable ends; (b) a variable speed drive assembly to rotate the hollow drum at selectable optimum speeds to produce along its upwardly moving inner wall a thin layer of particles which leave and fall from the inner wall a small distance before reaching the uppermost peripheral point of travel to produce a free falling cascade of particles which is sufficiently dense to form an impervious curtain spaced from the downwardly moving inner wall of the hollow drum; (c) a particle receiving assembly at the higher end of the rotatable drum; (d) a particle discharging assembly at the other end of the drum; (e) hollow nonrotatable cantilevered shafts positioned longitudinally within the hollow drum and extending from each end thereof; (f) spray disc sprayers rotatably mounted respectively on the ends of the cantilevered shafts inside the hollow drum; (g) power assemblies mounted respectively on the ends of the cantilevered shafts to rotate the respective spray disc sprayers to create spraying gravity forces of one thousand; and (h) a liquid supply assembly connected to the shaft for delivering liquid to the spray disc sprayers, while the particles are being delivered and removed from the hollow rotating drum.