Abstract: A device for comminuting feedstock with a rotor which is disposed within a housing and rotates about an axis of rotation and is equipped over its circumference with comminuting tools. A ring disc is attached to front sides of the rotor in each case concentrically to the axis of rotation. The removal of the sufficiently comminuted material occurs via a screen deck extending over part of the rotor circumference. On axial front sides of the screen deck an arcuate sealing element following the outer circumference of the ring disc is disposed in each case, the element which to form a sealing gap in the plane of the ring disc lies radially opposite to the disc. The sealing effect of the sealing gap between the screen deck and rotor uniformly over the entire length is successfully achieved in this way.

Abstract: Discharge grates and grate components of reducing equipment have reduced amounts of material to provide lower costs, lower weight, and less scrap while still providing adequate resistance to bending, deflection, and/or warping and suitable material discharge.

Abstract: A comminutor for shredding rag-like materials includes a frame member having a cutter bar that is affixed thereto and has a plurality of cutter teeth, and includes screen bars aligned with the cutter teeth. Each of the screen bars has an end that fits closely to its adjacent cutter tooth and the frame member so as to close a gap between the cutter tooth and the frame member. The end of the screen bar may include a flange that fits closely to the frame member and a tab proximate to the flange that fits closely to the cutter tooth. In an embodiment where the cutter tooth is flush with the frame member, the end of the screen bar includes a flange that fits closely to both frame member and the cutter tooth.

Abstract: A refiner (1) for refining fibrous material has a first refiner element (3, 5) and a second refiner element (3, 5). The second refiner element is arranged around the first refiner element in such a manner that the first refiner element and the second refiner element have a common middle axis (7) such that there is a refining space (8) between the first refiner element and the second refiner element. The first refiner element and/or the second refiner element are arranged to rotate around the middle axis and the refiner elements have refining surfaces (4, 6), through which the fibrous material is fed into or exits the refining space (8). The refiner has, in the direction of the middle axis of the refiner elements, at least two feed regions, through which the fibrous material to be refined is feedable into the refining space (8).

Abstract: A refiner (1, 18, 19) for refining fibrous material has a first refining surface (4, 11) and a second refining surface (4, 11), arranged at least partly substantially opposite to form a refiner chamber (12) to which material to be defibrated is arranged to be fed. The first or second refining surface is arranged to move in relation to the opposite refining surface. The first refining surface has elongated openings (14, 15) through which fibrous material to be refined is arranged to be fed into the refiner chamber, and/or the second refining surface has elongated openings (14, 15) through which fibrous material refined in the refiner chamber is arranged to be discharged. The elongated openings provided through the refining surface are arranged at an angle transverse to the blade bars and blade grooves of the refining surface on the first and/or second refining surface.

Abstract: A refiner (1, 18, 19) for refining fibrous material has at least one first refining surface (11) and at least one second refining surface (4), which are arranged at least partly substantially opposite to one another in such a manner that a refiner chamber (12) is formed between them, to which the material to be defibrated is arranged to be fed. The first refining surface or the second refining surface has openings formed through them and through which fibrous material to be refined can be fed into the refiner chamber or through which refined fibrous material can be removed from the refiner chamber. In addition, a method for refining fibrous material, a refining surface of a refiner and a blade segment for a refiner.

Abstract: A food waste disposer has a grinding mechanism that improves fineness and speed of grinding food waste, and also controls or meters the size of the comminuted food waste particles that are discharged from the food waste disposer. It does so by utilizing a more aggressive grind ring of the grinding mechanism that includes horizontal shredder elements in addition to openings, and blocking all except the openings in a minor circumferential portion of the grind ring from discharging comminuted food waste and water to a discharge outlet. In an aspect, a resilient seal is used to seal the adapter ring to a housing of an upper end bell of the grinding section and also provide a seal for a rotating shredder plate assembly of the food waste disposer.

Abstract: A knife bank assembly of a counter knife assembly of an integral chopper assembly of a combine harvester that includes an elongated bracket member that extends between opposed knife bank end plates and has a plurality of spaced retainment mounts securable therealong, with at least one, and preferably two, knife blades being removably connectable to each retainment mount in a side by side arrangement. The knife elements are removably connectable to the retainment mounts at first and second space mounting points, preferably in such a way that the knife elements are maintained in an extended position by application of a biasing force at the second mounting point but are rotatable about the first mounting point to a displaced or relaxed position if a sufficient force is applied to the leading edge of the knife element to overcome the biasing force.

Abstract: The invention refers to a comminution device comprising at least one comminution cylinder supported rotating in a machine frame with at least one comminution tool arranged on it, and at least one counter cutter interacting with the comminution tool, and at least one sieve device for the comminuted material the housing of which encircles the comminution cylinder at least partly, the sieve device and the counter cutter forming a common structural component. The invention is characterized in that the counter cutter is designed like a plate and has recesses designed corresponding to the shape of the comminution tools of the comminution device.

Abstract: An improved knife bank assembly of a counter knife assembly of an integral chopper assembly of a combine harvester that includes an elongated bracket member that extends between opposed knife bank end plates and has a plurality of spaced retainment mounts securable therealong, with at least one, and preferably two, knife blades being removably connectable to each retainment mount in a side-by-side arrangement. The bracket member is preferably mounted to a shaft member that extends between concave pan side plates to be slidable along such shaft member to permit adjustable positioning of the knife bank assembly and the knife elements thereof relative to the slots of the grate portion, and the retainment mounts are preferably removably securable to the bracket member.

Abstract: It is an object of the present invention to provide a particle crushing and sizing apparatus having a sufficiently wide particle crushing and sizing range, capable of being scaled down in size, and having high processing throughput. To achieve the object, a particle crushing and sizing apparatus has, in a casing 1a, a horizontally provided drive shaft 2, a plurality of circular plates 10 fixedly supported with intervals at the drive shaft 2, and stators 5 arranged so as to be opposed to plate faces 10a at lower peripheral edges of the circular plates 10 and each having inclined faces 5b that cause a gap between the plate faces 10a of the circular plates 10 to become narrower toward peripheral edges of the plate faces 10a.

Abstract: A comminution apparatus for reducing a particle size of a material includes a cutting chamber defining an interior volume, wherein the cutting chamber includes first and second member forming an angle therebetween. Each of the first and second members include a plurality of slots therethrough providing access to the interior volume. The apparatus further includes a rotatable arbor disposed outside the interior volume of the cutting chamber and supporting a plurality of toothed blades thereon. During rotation of the arbor a portion of each of the blades enters an interior volume of the cutting chamber through the slots in the first member and exits the interior volume of the cutting chamber through the slots in the second member. The comminution apparatus may be used to process various feed materials to desired sizes, and is particularly useful for reducing the size of materials otherwise difficult to cut to small size.

Abstract: True zero-clearance cutting on a commercial scale is provided via a cutting area including a sacrifice material that is relatively softer than the cutter. One example is a cutting system which is capable of cutting a material such as, for example, tape or paper, into a fiber or powder. The cutting system includes a cutting blade, typically a rotary cutter, and a sacrificial plate or round bar contacting the cutting blade. The contacting portion has a zero clearance during the cutting operation. A metering mechanism is also provided which is capable of metering the material at a predetermined rate to the cutting blade. A mechanism is also provided for incrementally moving the sacrificial blade towards the cutting blade to ensure that the zero clearance is maintained between the cutting blade and the sacrificial plate, even when the sacrificial plate begins to wear down due to usage.

Abstract: An improved mechanism is provided for adjusting the clearance between the outer edges of impeller vanes of a centrifugal pump and the interior surface of an adjacent intake plate. The impeller having the vanes is mounted as an assembly to a back plate that can be secured to a casing or housing to which the intake plate is mounted. Threaded adjusters allow adjustment of the clearance between the impeller vanes and the intake plate. Additional modifications include a modified seal design to prevent material from clogging relatively rotatable seal components, a modified intake plate with a shallow recess to increase chopping effectiveness and pump efficiency, impeller vanes with a unique shape to achieve a high head, and a self-priming pump.

Abstract: A cutting device for reducing waste material comprises at least two groups of knives mounted on a shaft, next to one another, installed rotatably in front of an anvil. The groups of knives, each operating in a restricted zone of the width of supply each comprises several splitting knives to split the waste material mainly according to the sense of supply of the waste material. Each comprises at least one chopping knife intended to cut the waste material mainly across the sense of supply of the waste material to be cut. The chopping knives of the groups of knives situated next to one another are mounted on the shaft, shifted with respect to one another, so that each of them affects the waste material at a different time and place. A calibrating sieve filters the free discharge of the shreds and contributes to a supplementary (secondary and tertiary) cutting.

Abstract: A comminution machine has a machine housing and a closed working cylinder with comminution holes arranged therein. Tools are arranged on a coaxial shaft within the working cylinder. The tools have vanes revolving at a spacing of at most a diameter of the comminution holes practically contactless relative to the cylinder. The vanes have outer edges slanted counter to a relative rotational direction between cylinder and tools. The shaft orientation and the axial orientation of the cylinder deviate from a vertical line. The working cylinder has a first end face opening connected to a feed channel and a lower cylinder half connected to a removal channel. A second end face opening whose diameter is at least as large as the greatest diameter of the working cylinder, is closed by a freely accessible lid. The shaft extends from the feed channel to the lid but does not penetrate the lid.

Abstract: A tearing mill for comminuting fruits (3) is equipped with a tearing bed (15) with tearing elements (4) and delivery vanes (5) for the fruits (3). Directly upstream of the tearing elements (4) in terms of the delivery direction (v), openings (16) for the comminuted pieces of fruit (8) are disposed in the tearing bed (15). As a result, low mechanical stress on the comminuted product (8) and a small proportion of fine particles are achieved, which improves the yield and output in an ensuing juice extraction operation.

Abstract: The invention relates to a process for separating tenaciously elastic materials such as plastics and rubber from materials tearing and/or defiberizing under high mechanical stress, particularly paper, and to a device for performing said process. The process is characterized in that the mixture of materials to be separated is subjected to high radial, axial and tangential acceleration forces, whereby a mass flow of shredded fibrous material and a mass flow of substantially unshredded plastics is withdrawn separately. The device for performing the process consists of a screen basket which is cylindrical or preferably polygonal in shape and has borings in its jacket to let the defiberized material pass through, a rotatable driving shaft being arranged coaxially inside the screen basket, with blades being attached to said driving shaft, preferably in rigid connection.

Abstract: An apparatus for shredding a product includes a housing having an interior space bounded by a generally cylindrical sidewall that can include one or more contoured segments. The housing further includes a cutting implement, preferably also contoured, following the contoured segment, with an opening in the sidewall between the contoured segment and the cutting implement that follows it. Preferably, the contours of the cutting implement are different from the contours of the segment that the cutting implement follows. The apparatus further includes a feed hopper through which a product to be shred is fed to the interior space of the housing, an impeller, including at least one impeller paddle, mounted for rotation within the housing about a substantially horizontal axis of rotation, and a driving mechanism coupled to the impeller for rotating the impeller.

Abstract: The present invention is an improved rotary granular material cutting apparatus and knife blade assembly. The apparatus comprises a perforated drum that may receive granular material into its interior. The grains of material extend through perforations in the spinning drum where they encounter a series of knife blades. The blades are arranged to form angles of contact with tangents to the spinnig drum. Those angles of contact are steeper on the side regions of the spinnig drum than on the bottom regions. The apparatus also includes a grooved interior baffle to disburse input material within the drum, and knife-mounting wedges that include toe or base stops to help secure knife blades in arrangement about the drum.

Abstract: An apparatus for mixing, grinding, dispersing or emulsifying including a rotatable drive, a rotor body connected for rotation with the drive and having at least one aperture for fluid flow through the rotor body and a flow divider plate structure extending within the rotor body for preventing conglomeration of particulates contained within the fluid in the rotor body. Preferably, a stator body is secured outside of the rotor body and each of the rotor and stator bodies include respective apertures for allowing fluid flow therethrough. The flow divider plate structure prevents the usual swirling action of liquid and solid particulates within the rotor body such that the mixture has a more desirable flow pattern and so that particulates do not conglomerate to form a mass that clogs the rotor body. Further aspects and embodiments of the invention provide advantageous seal structure and structure for increasing productivity.

Abstract: Machine for milling cereals, in particular rice, in an annular space (11) which has a vertical axis and is bounded on the outside by an outer casing (4), containing through-passages, and on the inside by a rotor (8), coaxial with respect to the same, and to which the milling material is fed by means of a positively driven conveyor (21). In order to increase the machine capacity along with the material being treated more gently, the outer casing (4) and the rotor (8) are frustoconical, the material is fed at the top, narrower end of the annular space (11), and the bottom end of the latter is provided with a compliant closure element (32).