Abstract: A subject of the invention is an ejection door for the casing of a material crusher, particularly for a scrap metal crusher, characterized in that it comprises at least one aperture of defined dimensions, cut right through along the transversal axis of said door, at least one deflector positioned on the internal surface of the ejection door forming a predefined acute angle of attack with said ejection door and optionally at least two side walls, arranged on each side of the aperture, perpendicular to the ejection door and on which the deflector is supported.
Abstract: A material reducing apparatus comprising a feed conveyor, for conveying material to be reduced, and a feed roller cooperating with the feed conveyor. An upwardly rotatable rotor carrying a plurality of strikers which facilitate reduction of the material to be reduced and an anvil cooperating with the plurality of strikers to facilitate further reduction of the material to be reduced. A grate assembly, located adjacent an arcuate path of the rotor, which permits sufficiently reduced material to pass therethrough. The material reducing apparatus further includes a failsafe system which comprising an accelerometer supported by the rotor and coupled to a control system such that the accelerometer, upon detection of the rotor contacting a hard material, sends a signal to the control system. If the signal indicates a sufficiently large material, the control system reverses a rotational direction of the feed roller so that the feed roll rotates to withdraw the hard material from contact with the rotor.
Abstract: A method and two apparatuses for comminuting chips are presented. Chip breakers without a coarse-part ejecting element are often used for comminuting chips. Blocking constituents therefore have to be removed with great effort, for example by hand. If a coarse-part ejecting element is present, there is no differentiation between blocking hard parts and blocking clumps of chips, but instead both types are ejected. It is now envisaged to subdivide blocking constituents in horizontal chip breakers into categories, depending on the negative acceleration of the shaft (3, 17, 18) caused by the blocking, and to assign to each category a defined reversing operation for loosening the blocking constituents and, if appropriate, discharge from the comminuting space (1, 15) by means of a coarse-part ejecting element (12, 32).
Abstract: The invention relates a pulverizer equipped with a free air purging mechanical seal/classifier design that provides free air purging of the seal gap between the mechanical seal assembly and the classifier. The invention also provides a coarse particle extraction assembly wherein the coarse particles rejected by the classifier can be reliably discharged from the pulverizer or recirculated to the inlet. Furthermore, the rejected coarse particles can be subjected to jet milling and then recirculated. The invention also provides a free air cooling arrangement for cooling both the lower bearing member and the area of the vertical drive shaft where it meets the lower bearing member. The invention also provides an improved feed nozzle for use of the pulverizer in drying applications.
December 15, 1999
Date of Patent:
September 3, 2002
Hosokawa Micron Powder Systems
Ching-Chung Huang, Qingsheng Lin, Robin T. Voorhees
Abstract: A grinding apparatus optimizes grinding efficiency within the grinding chamber by providing grinding action over a 360.degree. range encompassed by a set of breaker bars and one or more arcuate screening elements. Arcuate screening elements have an inside radius that identically matches the inside radius of the breaker bars. The screening elements act as grinding mechanisms as well as more conventional filtering mechanisms due to increased grinding capacity when the inside radial surface of the screening elements and the inside radial surface defined by the breaker bars are equidistant from the axis of a rotational shaft that supports a plurality of circumferentially spaced hammers.
Abstract: A device for reducing steel or metal chips from material removing machining which has a tapered milling hopper connected with a feed hopper and a cutter head shaft having a rotating cutter head. The milling hopper has tearing units mounted at varying heights around its circumference, a milling mechanism arranged beneath the milling hopper, and an outlet channel in the lower region of the milling hopper but above the opening of a chip discharge sheet which can be opened and closed by means of a powered channel slide. In the open position of the powered channel the powered channel provides access to a recess in the discharge channel which is connected a coarse material ejection sheet running obliquely outwards. The milling mechanism connects of at least two superimposed annular milling discs which can be rotating shearing head with shearing blades about its circumference and spaced shearing grooves.
Abstract: A system for producing a suitable fuel from waste material including a dispersion tank in which is located a rotary dispersion and agitation system comprising external vanes, rotary and stationary plates having opposing faces fitted with intermeshing shear blocks, forming an attrition zone therebetween for grinding and dispersing solids in a liquid blend stock. A method is provided for varying the displacement between the shear blocks to control the fineness of the grinding of the waste material. A method is provided for discharging metal from the dispersion tank and a pump is provided for circulating liquid from the dispersion tank to an accumulation tank and for recirculating the liquid from the accumulation tank to the dispersion tank. Feeding systems are provided for delivering solid waste material to the dispersion tank and include systems for grinding drums containing waste material, expressing waste material from the drums and auguring waste material from the drums.
Abstract: A comminuting apparatus is provided for use in an impact pulverizer. The comminuting apparatus includes a cover defining a grinding chamber and a support frame connected to the cover and defining a discharge space. A series of spaced-apart bars is circumferentially angled about a generally cylindrical path positioned between the grinding chamber and the discharge space. Each pair of bars in the series of bars defines a material discharge gap and the series of bars defines a series of spaced-apart material discharge gaps between the bars. Each gap defines a flow path having an inner side in fluid communication with the grinding chamber and an outer side in fluid communication with the discharge space. Each flow path extends in a direction generally parallel to a tangent to the cylindrical path defined at the inner side of each respective flow path.
Abstract: The comminuting machine includes a housing provided with a rotary impact mechanism. A conveyor conveys infed material to the rotary impact mechanism which cooperates with an impact plate in disintegrating the infed material. A comminuting cover plate covering a discharge opening of the comminuting machine follows the impact plate in the rotational direction and is arranged laterally of the rotary impact mechanism. The comminuting cover plate has an arcuate shape and is provided with parallel teeth rows protruding opposite to the rotational direction and transversely offset from each other. A comminuting grate is arranged below the rotary impact mechanism and forms an arcuate plate with throughpass openings. The comminuting grate cooperates with the rotary impact mechanism in forcing the infed material through the throughpass openings with further comminution.
Abstract: A method of composting garbage or refuse, in particular coarse refuse such as shrubs or bushes or the like, wherein the garbage is crushed and passed to a storage location, is to be improved in that the operation of crushing the garbage is effected while it is being picked up into a transportation vehicle and the crushed refuse is fed by the vehicle directly to a rotting dump. In addition the crushed refuse is to be conveyed, preferably by centrifugal force, to a downwardly open impact chamber which is closed all around and which stands up from the storage location, in which the refuse is distributed to form a rotting layer, whereupon the chamber is raised by the height of the layer and further material is built up on the surface thereof to produce a further layer.
Abstract: An apparatus for processing wood chips for use in the preparation of pulp in a papermaking operation including a conduit for accommodating a flow stream of wood chips, a rotary valve in the conduit, shunt branch conduits with a first shunt leading to a chip dumping bin and a second shunt leading to a chip processing device; dampers in the branches with the damper for the first shunt branch being in normally closed position and a damper in the other shunt branch being in a normally open position; and a metal detection device upstream of the branches operative to move the first damper to open position and the second damper to closed position for a predetermined time and to stop the rotary valve and to reactivate the dampers and rotary valve after a predetermined time.
Abstract: A scrap crushing machine comprises crushing device including a crusher rotor and at least one associated anvil, a housing accommodating the crushing device, the housing having an inlet opening and an outlet opening, a base arranged substantially under the rotor and extending from the inlet opening to the outlet opening, and an upper cover arranged substantially above the rotor and extending from the outlet opening to the inlet opening so as to define with the rotor a return chamber, separating device arranged in the outlet opening, an outlet connected with the outlet opening, and a flap arranged behind the rotor as considered in direction of rotation of the rotor and having a separating edge.
Abstract: A processing apparatus for solid waste including a rotor with a plurality of blades mounted thereon for shredding solid waste in corporation with a number of counterblades. A prescreening system is provided adjacent the inlet to the shredding elements so as to allow small abrasive items to be removed from the waste prior to shredding. A flexible cleaning system is provided for cleaning waste wrapped about the rotor between the blades. Further, a system is provided for preventing nonshreddable materials from jamming the rotor blade/counterblade system and for diverting such nonshreddable materials to a designated hopper.
Abstract: A sorting apparatus for the material outlet of a machine for breaking-up scrap. The machine has a horizontally disposed hammer breaker rotor that is disposed in a housing, the bottom of which is trough-shaped. A material inlet that extends to the rotor and includes an anvil is produced at the downwardly rotating side of the rotor. An impact or deflection chamber having an outlet opening is disposed above the rotor. The housing has a curved inner surface portion in the bottom trough, and a further inner surface that adjoins the curved inner surface portion and is on the upwardly rotating side of the rotor. The further inner surface is provided with ribs that are disposed parallel to the direction of movement of broken-up scrap. The open distance between adjacent ribs is approximately equal to the greatest desired diameter of broken-up and compressed scrap pieces. Channels are formed between adjacent ribs for respective streams of broken-up scrap.
Abstract: Apparatus for processing waste material made up of a mass of comingled abrasive shards and the like, uncrushable and shreddable classes of waste so that the subsequent individual handling of that waste material is made more efficient. The apparatus combines in a common structure rotary disc screen for initially separating the waste material so that the shards and abrasive classes of material are able to drop through the rotary disc screen while the remainder of the material is delivered to the apparatus for gravitational classification as between the uncrushables and shreddables in response to air flow in a controlled atmosphere to promote gravity fall-out separation of the heavier components from the lighter components.
January 5, 1987
Date of Patent:
March 15, 1988
Williams Patent Crusher and Pulverizer Company
Abstract: In order to provide a method and a disc cutter machine for carrying out the method with which the previously strenuous blade receiver exchange is simplified and facilitated, it is provided that the blade receiver (8) to be exchanged is tilted up by means of a tilting arrangement (19) with its end facing the outer side of the disc cutter, received by a guide (27) and drawn out substantially in the radial direction along the guide from the region of the disc cutter (6) and then the new blade receiver is inserted along the guide into the disc cutter.
Abstract: This invention relates to an apparatus for enhancing the fineness of oversized particulate matter entrained in a gas stream by impact with rapidly rotating hammer surfaces and more particularly to an apparatus for reducing the size of minor fractions of oversized particulates entrained in a gas borne stream of particulates, such as carbon black or the like.
Abstract: A coffee mill comprises a coffee bean pulverizing cutter held in a mill casing, a space for catching skin slivers and fine fragments of coffee beans and a cutter receiving space communicated with the catching space. Air flow is produced between these spaces during pulverizing the coffee beans to move the skin slivers to the catching space.
Abstract: A fiberizer contains a housing having a circumferential jacket in the form of a body of rotation at one end or end portion of which there is located a screen or sieve. At an end wall of the housing opposite the screen there are arranged guide elements which protrude into the internal chamber or compartment of the housing. Within the housing there is located a rotor having arms which are movable along the screen.