Abstract: A method of constructing a rotary drum filtering apparatus, the method comprising the steps of: placing a cover element end on a support portion, placing an overlying portion over the cover element end and inserting a respective tab into a respective opening in the support portion, moving the overlying portion along the support portion, so that the tab second portion is then under the support portion, thus holding the cap on the clip, with the cover element end trapped in between.

Abstract: A module is provided for screening or diverting particulate material. A method for producing a module for screening or diverting particulate material is also provided. Each module comprises either a screening member having an array of sieve apertures of a predetermined size defined therein for allowing particulate material up to the predetermined size to pass through the module or a diverting member or redirecting the flow path of the particulate material. A plurality of posts removably and interlockingly supports at least one reinforcing support frame and at least one module. Each reinforcing support frame is interlockably mounted onto the posts, and is readily detachable therefrom. Each module is disposed on the interlocking posts and is mounted onto, and readily detachable from, the reinforcing support frame. Each module is further positioned on the frame such that any particulate material passing through the module passes through the frame.

Abstract: In the rotationally symmetrical screen for fiber suspensions with a series of straight profiled bars which extend the direction of the screen axis and form slot-shaped screen openings between them, and with several ring-shaped profiled bar supports lying in planes extending perpendicularly to the screen axis, each of the profiled bar supports having in its edge region adjacent to the inlet side of the screen a series of cutouts opening towards the inlet side of the screen for insertion of the profiled bars, with the shape of these cutouts corresponding to the configuration of the cross-sectional regions of the profiled bars held positively in these cutouts, in order to simplify insertion of the profiled bars into the cutouts of the profiled bar supports each profiled bar has for each profiled bar support a recess which decreases the width of this cross-sectional region of the profiled bar, and the recesses lie outside the profiled bar supports in the finished screen.

Abstract: Screen panels are disclosed which are adapted to form a portion of a screening cylinder for screening fibrous material. The screen panels are unitary and made of wear-resistant material including a plurality of axially extending grooves on the outer surface of the screen panel, a plurality of slit-shaped screening orifices disposed at the bottom of the axial grooves, at least one support ring extending circumferentially across the surface of the screen panel and integral therewith, and a flange is formed at the sides of the screen panel so that the screen panels can be assembled together without the use of welding.

Abstract: A rotationally symmetrical screen for fiber suspensions with an inlet and outlet side, having a series of profiled bars which extend transversely to the circumferential direction of the screen, the cross-section of the profiled bars having a first end region facing away from the screen outlet side and a second end region facing away from the screen inlet side, and with metallic supporting rings lying in planes extending perpendicularly to the screen axis, each of the supporting rings having a series of cutouts open at their edge towards the screen inlet side, the shape of the cutouts corresponding to the configuration of the second cross-sectional end regions of the profiled bars lying in the cutouts, and forming an undercut in which a projection of the profiled bar cross section engages so that the profiled bars are held positively in a radial direction in relation to the screen axis and in the circumferential direction of the screen with their second cross-sectional end regions in the supporting ring cutout

Abstract: The present invention provides a separator having a rotatable frame and a plurality of sizing panels attached thereto. The frame has a pair of end rings and a plurality of stringers extending longitudinally between the end rings. Each stringer has a substantially rectangular cross section. The cylinder panels each have a pair of circumferentially extending edges and a pair of longitudinally extending edges. Each sizing panel includes a pair of longitudinally extending flanges that engage the stringer in the separator frame and is clamped in place within the channel of a clamp bar attached on the external surface of the cylinder.

Abstract: A rotary screening device is disclosed which includes a rotating cylinder having an inlet end, an outlet end and a cylindrical wall formed at least partly from the screening surface. The cylinder is rotatably supported on wheels which are in turn mounted within a trough-shaped spray shield having sides formed from a single unitary blank of metal, and which extends about the lower radial surfaces of the cylinder wall, functioning as the screening device frame.

Abstract: Sieve with slots or holes, made from a U-shaped section, constituted by a stack of identical circles, each circle (1, 1') being made from a tapered U-shaped section of which the two ends are welded or mechanically connected to one another, characterized in that this stack of circles (1, 1') is maintained tightly between two rings (2-3, 2-'3') by a plurality of tie rods (4, 4') and in that the lateral walls of the circles in the stack rest on one another without any further fastening together, so that the walls of the sections can undergo elastic deformation under the effects of the tightening.

Abstract: A papermaking screen of the invention is formed of a first annular supporting member having a first annular recess formed at one side, and a second annular supporting member having a second annular recess at one side. The second annular recess has a size corresponding to that of the first annular recess and orients toward the first annular recess. A plurality of space holding members is fixed to the first and second annular supporting members to establish a predetermined distance therebetween. Also, a plurality of elongated members is situated in the first and second annular recesses and arranged parallel to each other between the first and second annular supporting members. At least one of two elongated members situated adjacent to each other has a space forming device thereon relative to the other of the two elongated members. When the elongated members are arranged parallel to and contacted to each other, a space is formed between the elongated members situated adjacent to each other.

Abstract: A mesh screen comprising a pair of rings open at each end. A piece of mesh material is releasably clamped between the rings. The inner face of one cylindrical ring is provided with a circumferential groove and a circumferential flange projecting in the same direction as the mouth of the groove. The inner face of the other cylindrical ring is provided with a circumferential flange which is adapted to mate with the circumferential flange of the first cylindrical ring so that the mesh material may be interposed between the flanges, and the free edge of the circumferential flange of the other cylindrical ring is accommodated within the groove.

Abstract: A system for screening particulate material includes replaceable screening modules mounted to a rigid frame by lock pins. The lock pins are fixed into mounting holes in the frame and interlockingly and removably engage recesses in the sidewalls of the screening modules so that the lock pins remain fixed to the frame while allowing the modules to be removed and replaced as required due to wear or to change sieve size. A split lock pin is provided for removably connecting the module to the frame along an outboard edge of the frame while maximizing screening area. An improved elongate frame member is arranged to avoid abrasive wear of the frame.

Abstract: An apparatus for separating different phases of dry material, such as plant fibers, from each other includes a rotating hollow body on an inclined axis with an inner perforated wall, an outer perforated wall, and partitions at spaced intervals within the body to define compartments. The compartments are connected by central openings in the partitions, and each compartment is provided with longitudinally extending baffles. The outer perforated wall is divided into longitudinal sections by a gap. The material is fed into an upper input end and the different phases are separated as it moves within the downwardly inclined body toward an outlet end. The separated phases are carried away by conveyors.

Abstract: An improved cylindrical rotary screen having as a screen member a composite element comprising a radially inner layer of fine mesh screening supported on a radially outer layer of apertured, expanded metal sheeting. The radially inner layer of fine mesh screening is provided as a number of removable modular panels which are longitudinally slidable in and out of the open discharge end of the cylindrical screen. The rotary screen provides excellent filtration yet is simple to manufacture and maintain.

Abstract: A rotary grid-structure bucket for separating fine and coarse constituents of sizable materials or products, has a bucket (3) with a separating part (9) located between its back (7) and its front (8) and sides provided with apertures to allow fine constituents (4) of the sizable materials or products (6) to pass therethrough. To make it possible for the separating part (9) to be exploited in its entire length the sides of the separating part diverge symmetrically with respect to the axis of rotation (R) in a forward direction. Ahead of the separating part (9) the bucket has a front part (25) whose sides diverge around the axis of rotation (R) in a forward direction in a lesser degree in relation to the axis of rotation (R) than the sides of the separating part (9) or extend in parallel with the axis of rotation (R) or converge in relation to the axis of rotation (R).

Abstract: A rotary drum filter has a plurality of longitudinally extending division grids mounted about the outer circumference of a drum. A plurality of corrugated sheets are provided, with the leading and trailing edges of each sheet mounted to circumferentially adjacent pairs of division grids to define filtrate compartments. An equivalent number of perforated filter plates are also provided. Each filter plate is attached to the top of a corrugated sheet and has a leading edge that is set back from the leading edge of the attached sheet. A seal member is positioned at the leading edge of each corrugated sheet and has a first leg extending between the filter plate and the corrugated sheet. The seal member further includes a second leg which abuts the leading edge of the corrugated sheet so as to block the open ends at the leading edge of the corrugated sheets.

Abstract: A rocker barrel usable in conjunction with a blast stream of abrasives for the cleaning of work pieces. The rocker barrel is of the shallow depth bed type and is mounted for oscillation. The rocker barrel is provided internally with rocker members which will engage both smaller work pieces, such as engine heads, and larger work pieces, such as engine blocks, to effect the tumbling of such work pieces as the rocker barrel oscillates and at the same time maintaining work pieces within the rocker barrel always within the blast stream so as to prevent the blast stream from being directed against the rocker barrel.

Abstract: A grain cleaning attachment is disclosed for a grain auger. The attachment includes a cylindrical vibrating portion to surround the auger flighting after removal of a portion of the auger tube. The vibrating member is sized to provide a clearance between the walls of the member and the auger flighting to permit vibratory displacement of the member. Rubber sleeves connect the vibrating member ends to free ends of the auger tube. A vibration motor is carried by the vibrating member to affect vibration of the member. A tube support member is provided comprising a pair of rigid sleeves rigidly connected to the auger tube on both a downstream and upstream side of the vibrating member. Rigid braces connect the sleeves in axial alignment. A downstream sleeve has an opening to find therethrough in communication with an interior of the tube with a blower carried on the sleeve having an intake in communication with the opening.

Abstract: The invention relates to a screening machine with a screening drum which rotates about its axis and has a screen made of elastic material. The characterizing feature of the invention is that the screening drum has at least one screening zone which has the shape of a cylinder or truncated cone and the length of which, in order to alternately stretch and relax the screen lining, can be changed in a vibrating manner in the axial or conveying direction.

Abstract: A centrifugal screening device comprises a cylindrical screen surrounded by a cylindrical casing spaced radially from the screen. A central shaft inside the screen carries a plurality of blades which are inclined so that material fed into one end of the space between the shaft and screen is thrown toward the screen by centrifugal force and is also propelled axially of the screen to an exit at the other end. Fine material passing through the screen is collected in a funnel at the lower end. The screen is made up of semicylindrical sections each comprising a frame in which metal mesh is secured by strips of woven synthetic resin material.

Abstract: A drum type screening machine has a centrifuging rotor within it. A perforated retaining element is carried by the shaft between a feed inlet and an entry region of the drum. Use of the retaining element prolongs the screen life so much that tension adjustment become necessary. Provision is made for this to be done from outside of the machine. The screening drum has a pair of rings which support the screening cloth and which are held apart at an adjustable distance by tensioning bars. One ring is supported within an end member of the machine housing and the other on support means within the housing. Each bar is externally threaded, e.g. by way of an extension sleeve that is axially fast with the bar. The sleeve is engaged by an internally threaded nut which is axially fast with the end member of the machine. The sleeve extends through that nut and through the end member to the outside of the machine.

Abstract: A cleaning and/or grading machine for free-flowing materials comprises at least one cleaning and/or grading unit accommodated in a hollow housing which is secured on a frame and connected with an aspirating chamber; a batching device located in the upper part of said housing; an air separating channel installed in the same housing and comprising a thrower of the free-flowing material; a rotor installed in said housing and comprising a screen drum secured thereon, said drum having a material distributor in the upper part; said screen drum is built up of a number of consecutively arranged sections each consisting of a screen in the form of a body of revolution and secured on supporting rings; the sections are interconnected by equidistant tie rods extending through said supporting rings which makes it possible to assemble these sections into standardized screen drums while the cleaners installed at the external side of said drum opposite to each other relative to the rotation axis of said drum ensure efficient

Abstract: A screen drum and a method for its manufacture is disclosed wherein the screen drum comprises at least two cylindrical screen members spaced apart, between which a stiffening ring is disposed. The stiffening ring has two cylindrical surfaces which guide the ends of the cylindrical screen members, and a projecting part between them. The cylindrical screen members and the stiffening ring are attached to each other by a weld joint connecting the projecting part of the stiffening ring and the ends of the cylindrical screen members and filling the gap between them.

Abstract: Corn-earlage is processed so that the kernels and corn-cobs are finely chopped while the husks retain their raw fiber structure. The mixture of the finely chopped kernels and corn-cobs along with husks is placed in a silo to produce ensilage. If the ensilage is to be used to feed hogs, it is removed from the silo and passed through a screen or separating drum for adjusting the fiber content of the material. Depending on the fiber content desired, the material is introduced into the screen drum provided with a number of serially arranged rows of screen plates. Each row has a removable plate which can be replaced with other plates having larger or smaller openings for achieving the desired fiber content in the ensilage to be fed to the hogs. The drum axle is inclined to the horizontal and is adjustably supported at the inlet end of the drum so that its height relative to the outlet end can be varied.

Abstract: The trommel screen unit includes a screen panel of polyurethane having embedded therein a plurality of longitudinal and transverse fiberglass rods. Marginal portions of the polyurethane panel overlie and are bonded to a rectangular steel frame, the sides of the frame having longitudinally spaced notches which receive therein the end portions of the transverse rod.

Abstract: A rotary screen appliance for the sifting of sand at a construction site is fittable directly to the mouth of a motorized driving device such as a cement mixer. A dismantable screen cage is connected to an armature preferably having three guide arms. A fastening portion is slidably attached to each guide arm and extends at an acute angle therefrom such that the fastening portions may engage the mouth of a cement mixer and thereby lock the screen cage thereto. Rotation of the cement mixer causes rotation of the screen cage. A device for rapping on the screen cage and thereby shaking it as it rotates is also provided.

Abstract: Separator apparatus for separating out the insolubles and pulpy material from a container washing solution in a rotary screw separator apparatus which is provided with means to extend the useful life of the apparatus and maintain efficient separation by adjustment of the separator screen to restore as nearly as possible the original working clearance of the screen about the rotary screw.