Abstract:
The invention relates to a method for producing compressed wood fuel pellets from wooden waste material such as sawdust or shavings. According to the method, a press (1) is placed at a first mill site (4) for wood where a first quantity of wooden waste material is present. The press (1) is operated at the first mill site (4) until the first quantity has been transformed into pellets. Thereafter, the press is moved to a second mill site (5) for wood where a second quantity of wooden waste material is present. Thereafter, the pellets press (1) is operated at the second mill site (5) to transform the second quantity into pellets. The invention also relates to a press (1) for carrying out the method.
Abstract:
The invention relates to a granulate and a method and a device for the production thereof. The aim of the invention is to provide a granulate on the basis of regenerative raw materials which is suitable as a material for injection molding and which is widely variable with respect to its mechanical and other physical properties due to the introduction of additives. The inventive method provides a means for producing the granulate without specifically pre-treating the plant parts used. A device is provided for carrying out the inventive method which device may consist of a pre-granulator and a final granulator or only of a pre-granulator. An especially clean-cut granulate can be obtained by the various configurations of the final granulator which can be equipped with counter-rotating matrices or with matrices that rotate one inside the other.
Abstract:
The invention relates to a pelletizing press (1) with a drum (2), comprising a drum axis (6) and at least one press roller (3) which is accommodated in the drum (2) in such a way that it can rotate about a press roller axis (8). The press roller is driven about the press roller axis by roller drive means (7, 27, 28, 29). The press roller (3) and/or the drum (2) are also rotated about the axis of the drum by rotation means. Furthermore, roller adjustment means (11, 12, 13, 16) are provided for varying the distance between the press roller and the drum wall. By designing the roller drive means, the rotation means and the adjustment means in the form of three concentrically situated shafts, an adaptation of the position of the press roller (3) can be obtained during continuous operation of the pelletizing press (1), in other words, during rotation of the press roller (3) about its axis and during rotation of the press roller (3) and/or the drum (2) about the drum axis (6). The concentrically arranged shafts form a relatively compact and simple drive for the pelletizing press according to the present invention.
Abstract:
Apparatus for forming compressed wafers of fibrous or particulate material includes support structure (12) which carries an endless track (18) and, about the track, an annulus or part annulus (16) of angularly spaced die cells (20). Each cell (20) extends radially outwardly and has a respective inlet opening (21) at the track (18). The axis of the annulus (16) is generally upright. A press wheel (26) is arranged eccentrically with respect to the annulus (16) for orbital rolling movement along the track (18). A feed chamber (24) is disposed above the press wheel (26). A guard (42) for the press wheel (26) overlies and revolves with the orbital motion and is positioned so that an orbiting convergent cavity (50) between the press wheel (26) and the track (18) is exposed to the feed chamber (24) to receive fibrous or particulate material for extrusion by the rotating press wheel through the die cells (20). A cover (60) for the feed chamber (24) revolves with the press wheel (26) and guard (42) and has an opening (62) through which the material may be delivered into the feed chamber and thereby deposited in the convergent cavity (50). This opening (62) is substantially directly above the convergent cavity (50).
Abstract:
The rear end of a rotary drying drum (1) is provided with a peripheral channel (10) in which dried material to be briquetted, such as green crops, wood flakes or peat, is accumulated and carried along. The bottom of the channel (10) is formed by the inner periphery of a ring of dies (18), in which the formation of briquettes takes place by means of a pressure roller (17) operating in the channel (10) and compressing the material against the frictional resistance in the dies. The material has previously been precompressed by an endless band (19) likewise operating in the channel (10), which band preferably runs at the same peripheral speed as the pressure roller (17) and the inner side of the die ring (18).
Abstract:
A solid fuel is formed in a cuber to form body pieces formed of materials extruded through a die with a density greater than 35 lbs/cu ft; an energy content greater than 6500 BTU/lb; transverse dimensions less than 1.5 inches; and a length less than 4 inches; from plant biomass material which contains components when extended of greater than 1.0 inch. Primarily the materials are paper or other cellulose product and crop residue such as wheat straw. The cellulose and lignin from these materials act without additional binders as binders and encasing materials. The moisture content is maintained at a target value by mixing selected quantities of the materials without drying. The cubing machine has a feeding system where the space between the inner rotor and outer casing is smaller than 4 inches and the height of the outer flight is less than 1 inch.
Abstract:
The invention is directed to a device for converting free-flowing feed material (43), for example, foils, fibers, foam products, powders, and the like of organic and/or inorganic materials into granules, agglomerates, pellets, green compacts, and the like by applying pressure with a cylindrical compression chamber (17), which is arranged around an axis (1). At its periphery, the compression chamber (17) is confined by a ring element (18) with passage openings (19), and it accommodates a pressure element (10) that rotates around the axis (1) in the direction of rotation (27). The feed material (43) is axially conveyed to the compression chamber (17) and is radially supplied to the ring element (18) by the pressure element (10). The pressure element (10) includes at least one pressing blade (9), which extends to and interacts with the ring element (18), the front flank (28) of said pressing blade in the direction of rotation (27) being curved such that between pressure arm (9) and ring element (18), a narrowing compression zone (30) is formed, the end of which is formed by a pressure piece (29, 42). Due to the thus fixedly defined geometry of the compression zone, various process parameters, for example, pressure, temperature, and viscosity of the feed material, cannot be influenced while being processed. The remedy of this disadvantage provided by the present invention is such that the segment of the pressing blade (9), which is positioned in front of the pressure piece (29, 42) in the direction of rotation (27), and which forms the compression chamber (30), is at least in part formed by a shape component (31, 40), which is detachably connected to the pressing blade (9), the spine of which (34) determines the contour of the compression zone (30).
Abstract:
The invention relates to a pelleting press for the production of feed pellets for the like. The aim of the invention is to enable easy and economical separation of the mold in order to change said molds. This is achieved in that guided clamping elements (17) are arranged between the mold (8) and a pressure ring (13) of the mold carrier (11) in such a way that they can be displaced axially (11) so that the mold (8) can be released and clamped by axial displcement by means of a flat contact surface between the screws (18) of the clamping segments (17) and the pressure ring (13).
Abstract:
A device which takes cut alfalfa laying in a field and turns it into a plurality of pressed cubes. A water spray conditions the cut alfalfa to have the right moisture content for subsequent processing. A pick up station delivers the alfalfa off of the ground and feeds it to an auger and paddle area for subsequent conveyance to a chopping station where the alfalfa is comminuted to the appropriate length. Thereafter, the chopped alfalfa is conveyed into a press where the cubes of alfalfa are formed by extrusion. Conveyors allow the formed cubes to be placed in a trailer hitched to the vehicle. By providing a vehicle which processes the alfalfa in the field, enhanced quality of the alfalfa cubes and efficiency results.
Abstract:
A pellet mill for pelleting feed product, has a pelleting die with a plurality of extrusion holes for extruding the feed product; rollers, rotatable relative to the pelleting die, for forcing feed product through the extrusion holes; provision for intensively mixing and shearing the feed product before introducing the feed product to the pelleting die; and a device for positively conveying the feed product into the provision for intensively mixing and shearing.