Abstract: Provided is a method for removing wire-form objects, a device for removing wire-form objects, and a method for processing electronic/electrical apparatus component waste, which can efficiently sort wire-form objects from sorting target objects having various shapes. The method for removing wire-form objects includes: arranging a filter in a vibrating sieve machine, the filter including a plurality of rods extending at distances in a feed direction of a raw material; and placing a raw material containing at least wire-form objects and plate-form objects onto the filter, and vibrating the filter to sieve out the wire-form objects under a sieve.

Abstract: The present invention relates to a method of manufacturing a rotor for a screening apparatus and a rotor structure for a screening apparatus. The rotor structure is particularly suitable in screening fiber suspensions of the pulp and paper industry. The apparatus relates to a novel rotor construction, and especially to a novel means of fastening a turbulence element on the rotor surface. The rotor is provided with easily replaceable turbulence elements so that at least a part of the rotor has at least one area —having a surface configuration different from the remaining rotor surface, on which area the turbulence element is fastened.

Abstract: A filter screen to be used in conjunction with a shale shaker in removing solid matter from drilling fluids includes a filter plate having a plurality of perforations, a plurality of hold-down apertures, and a pair of end caps attached to the filter plate, wherein each end cap is configured to isolate the hold down apertures from the plurality of perforations.

Abstract: A self-cleaning screen assembly for a vibratory separator is disclosed. The self-cleaning screen assembly includes a peripheral frame having a top mounting surface to which at least one screen cloth is affixed and a bottom mounting surface to which a flow through support screen is affixed. One or more cleaning elements are freely located between the support screen and the screen cloth. The peripheral frame includes a rigid support section, a cushioned top strain relief zone, and a cushioned bottom strain relief zone. The top strain relief zone, the bottom strain relief zone and the rigid support section may be discrete components wherein the strain relief zones are formed by strain relief pads that are located adjacent to a rigid support member. The top strain relief zone provides cushioned support to the screen cloth around the edge of the screen frame adjacent to the opening. The bottom strain relief zone provides cushioning for the support screen.

Abstract: Process for the filtration of paper pulp with a device that comprises a rotor and a stator; one of the two, filter (1), has perforations of slot or hole types, and the other, the backwashing element, includes means that are intended to generate pressure pulses that consist in combatting the gradual clogging of the perforations of the filter and the gradual flocculation of the pulp during the creep of the pulp between the rotor and the stator by creating deflocculation zones and/or increasing the relative speed between the pulp and the backwashing elements.

Abstract: Apparatus for the screening of fiber suspensions is disclosed including a housing, a reject outlet and an accept outlet, a screen located within the housing, a rotor including pulsation wings mounted therein, a reject chamber in the housing for collecting a reject portion of the fiber suspension, and an accept chamber for collecting the accept portion of the fiber suspension passing through the screen and supplying it to the accept outlet, each of the pulsation wings including an outside face and an inside face, a leading edge, a trailing edge, and upper and lower ends so that a predetermined pressure difference is created between the outside and inside faces of the pulsation wings in the direction of the lower edge thereof.

Abstract: A continuous cleaning system to prevent clogging of screens in screening machines used to sort materials such as aggregates, such system comprising positioning a cleaning device such as a chain in line with the length of and on top of, a screen to be cleaned, and then using a motor assembly to rotate said cleaning device thereby moving it back and forth across the top of said screen, so that substantially the entire area of the top of said screen comes in contact with said rotating cleaning device, which taps or otherwise contacts the surface of said screen as it moves back and forth across the top of a screen deck, thereby dislodging any dust or other material that might otherwise clog or block the openings in said screen. In a preferred embodiment, a motor rotates the cleaning device which has the effect of driving it back and forth along a tight cable on which said pulley travels. The speed, power, and direction of the motor are subject to controls, which may be easily set by an operator.

Abstract: A screening device including a screen having a first side for presentation to material to be screened and a second side, a plurality of screen openings in the screen extending between the first and second side thereof, a plurality of tines mounted on a support device disposed on the second side of the screen, each tine being moveable in a first direction along a path at least part of which includes one of the screen openings whereby the tine is receivable in and moveable along the screen opening, the tine extending beyond the first side of the screen for at least part of the movement thereof along the screen opening, the tines being moveably mounted on the support device for deflection away from said first direction while continuing to move in said first direction upon encountering an obstruction.

Abstract: A sieve frame for a plansifter has a sieve covering, a bottom, and at least one sieve cleaner including a foot and a plurality of cleaning heads. The cleaning heads may have a brush-like or nubby configuration. The cleaning heads are configured to move erratically on the bottom in response to a vibrating movement of the sieve frame. At least a part of the foot closest to the cleaning heads resiliently supports the sieve cleaner such that the cleaning heads are under an elastic intial tension against the sieve covering.

Abstract: Pressure screening apparatus for screening a suspension of paper fiber stock employs a rotor in which a single impulse or foil member is carried or positioned to move along a discrete portion of the screen surface. This arrangement improves efficiency of operation of the pressure screen by reducing the rotational effect of the rotor on the stock suspension being screened and by providing a less disturbed screening region through which the single foil operates. Embodiments are shown in which multiple single impulse elements sweep over discrete portions of a screen and in which a single foil is combined, in screening apparatus, with multiple foils in accordance with the increase in consistency of the stock as it passes through the screen.

Abstract: A screening device including a screen includes a first side for presentation to a body of material to be screened and a second side. A plurality of elongate screen openings are formed in the screen extending between the first and second sides thereof. A plurality of tines mounted on support means disposed on the second side of the screen. Each tine is movable along a cyclical path at least part of which includes one of the elongate screen openings whereby the tine is receivable in and movable along the elongate screen opening. The tine extends beyond the first side of the screen for at least part of the movement thereof along the screen opening. The screening device may be incorporated in various machines including a recovery head for an underground mining apparatus.

Abstract: A sieve box for a particulate sifter has a pan, a screen, and a number of screen and pan clearing devices. Each device has a first member with fingers engageable with the pan to remove particulates that accumulate on the pan and a second member with fingers adapted to engage the screen to clean the screen or particulates. The first and second members have cooperating structures that movably connect the structures to allow free combined lateral movement in the sieve box and independent relative rotational, vertical and wobble movements.

Abstract: A screening device is described which is adapted in particular for fiber suspensions when paper is pulped. Along the outer circumference of a rotor body, there are disposed vanes which are oriented towards a screen wall. The vane is supported by a support member made of several parts, e.g. two parts, namely of a vane carrier and a strut carrier. The strut carrier is secured to the rotor body, for example by welding. The vane carrier and the strut carrier are detachably connected with each other by a screw connection which prevents rotation therebetween. More particularly, the connection between the vane carrier and the strut carrier is of the interlocking type.

Abstract: Arrangement for separating off undesired particles from a suspension stream. The arrangement has a closed housing with an inlet for the suspension from which particles are to be separated off, an outlet for the treated suspension and an outlet for undesired particles. The arrangement also includes a screening drum that is perforated by a number of circular slits and cleaning members that are disposed inside the housing. The screening drum is immovable and the cleaning members are arranged to rotate along a circumferential surface of the screening drum and down into the circular slits.

Abstract: A trommel cleaner apparatus having a non-circular rotatable shaft with a plurality of flapper elements mounted thereto for wiping and cleaning engagement with a trommel is provided herein. The flapper elements each have a hub having inner and outer surfaces, with the outer surface including a plurality of flappers extending therefrom so as to engage a trommel in cleaning operation and with the inner surface including a plurality of indexing lobes to variably position the flapper element relative to the shaft and adjacent flapper elements, thereby reducing the torque spikes applied to the trommel.

Abstract: A water based dredge includes a grizzly with a sieve and a pair of bi-directional rakes. The rakes translate relative to the stationary sieve to slide waste or recoverable material off of the grid and onto a refuse barge or material processing apparatus, respectively. A grab deposits dredge material onto the sieve and an operator determines whether the material includes waste such as clay or the like or recoverable material such as rocks, dirt, or sand. If the operator determines that the dredge material is waste, the rakes will be actuated for movement from a first direction to thereby push the waste off of the grizzly and onto a refuse barge. If the operator determines that the dredge material includes recoverable material, the rakes will be operated in a second direction so the recoverable material is slid from the grizzly and into a crusher or other appropriate processing apparatus.

Abstract: A large or square plansifter has a large number of sieve stacks with e.g. more than 20 sieve boxes. Such boxes are constructed without a supporting grating and design so as to be exchangeable in the covered state and so that they can be placed on or in the sieve frames. A free product fall-through space or discharge space is accordingly formed between the sieve screen and a flat base plate. The sieve cleaners are placed on or in the flat base plate. In a particularly preferred manner, the sieve frames are constructed as metal frames. The sieve cleaners clean the sieve screen and clear the product from the base plate. The sieve cleaners preferably have 2, 3 or 4 arms.

Abstract: A system for providing a self-cleaning function to rectangular vibratory screens which may be disposed on an incline in a vibratory separating system. Pans or screens defining flow-through support surfaces span across the frame of a screen parallel and displaced from the screen cloth. Sliders are positioned on the pans which have the capability of impacting the underside of the screen cloth when the vibratory system is in motion. Dynamic mechanisms for imparting circulatory motion to the sliders include mounting rods associated with the pans or screen frame members which extend laterally across same. Tubes capable of eccentric motion about the rods are mounted thereto such that the vibratory motion of the screening mechanism induces such movement for impacting against sliders to cause slider circulation. The sides of the pans are slightly flared outwardly to engage the screen frame for proper location of the system within each screen.

Abstract: A permanent magnetic filter is provided in a form that includes a closed vessel having an inlet plenum, a central filtering region, and an exit plenum. The central filtering region includes a plurality of magnet filter tubes arranged in a substantially uniform array that is supported in a manner which achieves satisfactory filtering, minimizes fluid pressure drop, and permits easy cleaning.

Abstract: A bar screening apparatus for the efficient screening and removal of solid materials from a liquid flow stream. The bar screen includes a plurality of bars that are disposed in substantially parallel adjacent relation to each other and each have an upstream face disposed at an acute angle to the direction of flow of the liquid flow stream for enhancing screening of even relatively thin solid waste materials without significantly impeding the flow stream. The bars of the screen preferably are formed with a plurality of flow apertures in their active region which further minimizes head losses in the system and enhances screening of solid materials. A power operated two-directional rake is provided for more efficiently removing solid material that accumulate on the bar screen. Projections on the rake engage the bar screen only in one direction of the rake's movement and means are provided for forcing a close-fitting relationship between the rake projections and the screen bars during the raking operation.

Abstract: In order to enable thickness screening of the chips in a drum screen comprising a rotatable screen drum with screening slits (1) extending in circumferential direction and formed between a plurality of parallel rings (3) arranged one after the other and joined together at a predetermined distance from each other by means of cross pieces (4) extending axially on the inside of the rings (3), the invention suggests that at least a plurality of the rings (3) of the drum screen is provided with a plurality of guide plates (5) arranged along their inner circumference surfaces, substantially parallel to the screening slits (1) between the rings (3) in order to turn long splinters and chip pieces, enabling them to pass through the screening slits (1) intended for that particular chip thickness. The rings (3), as is known per se, consist of tubes or rods having radius cross section and bent to substantially circular shape.

Abstract: Disclosed is a device for sequentially cleaning the screens of a particle size analyzer of the indexing drum type, as each screen moves out of the screening position. The cleaning member is preferably removed from the drum during each screening step. The particles dislodged from the screen being cleaned are returned to the sample being analyzed in a manner which maintains the accuracy of the analysis. In an alternative embodiment, each screen is cleaned during a screening step, at an indexed position other than the screening position.

Abstract: Disclosed is a plow assembly adapted for use with an endless conveyor type filtering device. The assembly comprises an elongated support member and at least one plow depending therefrom. The plow comprises a shaft affixed to the support member, a plow body having a central bore through which the shaft partially extends, the body being capable of rotary movement on the shaft, and a stop retaining the plow body on the shaft.

Abstract: A separating apparatus for classifying particulate material according to size, including a sub-housing enclosing a horizontally extending cleaning screen. A plurality of separate conveyor mounted paddles sweep a top surface of the cleaning screen and a further plurality of paddles are biasing into sliding contact with a bottom surface of the cleaning screen to loosen clogs of particulate material clogged within the screen.

Abstract: Disclosed is a filtering device comprising an endless perforate conveyor belt adapted to carry a liquid-containing material and extract liquid from the material through the belt, and a plow assembly for disrupting the material carried by the belt. The plow assembly comprises a generally horizontally positioned cross-member extending across the width of the belt, the cross-member supporting at least one plow such that the plow is capable of contacting the material carried by the belt, the cross-member is mounted adjacent its ends on slide means that enable the cross-member to be raised and lowered with respect to the perforate belt. The device further includes selectively actuatable member for raising and lowering the cross-member with respect to the belt to thereby move the plows into and out of material contacting position.

Abstract: A screening assembly is provided including a closed housing having an inlet and a first outlet, and a second outlet. A screen drum having a plurality of circumferential slots is mounted for rotation in the housing so that liquid passing from the inlet to the second outlet must pass through the drum slots. A a barrier member mounted on a short housing segment between the inlet and first outlet prevents short-circuiting of suspension flow from the inlet to the first outlet, and also includes a plurality of comb-like teeth extending into the drum circumferential slots. The barrier member has concave surface portions thereof adjacent the suspension inlet and outlet. The drum has a plurality of circumferentially spaced grooves or raised portions formed in or on the exterior surface thereon and extending substantially parallel to the axis of the rotation of the drum. The center lines of the inlet and first outlet preferably make an angle of about 45.degree.-90.degree.

Abstract: A pair of screens are arranged one behind the other and served by a common cleaning rake for the removal of the screenings from both screens in a single operating step.

Abstract: A separator of the vibratory type comprising a box assembly of a plurality of planar pan screens resiliently suspended on a support base for vibratory motion thereon by resilient tension springs mounted between the box assembly and surrounding base truss members. The pan screens in the box assembly are formed of cylindrical sleeve frames and a circular screen having an elastomeric ring about its outer periphery with an external rim grooved to receive the lower edge of the superior sleeve frame. The pan screens are assembled into the box assembly by a plurality of tie rods disposed about the outer periphery of the box assembly to axially compress the assembly and screens into position and assure their support of material. The upper edge of each of the sleeve frames is deflected inwardly to telescopically receive the lower edge of the superior pan screen and effect radial deflection of the elastomeric ring of the superior pan screen when the assembly is compressed.

Abstract: A portable screening apparatus comprises a base assembly having a two wheel assembly associated therewith. A shaft is journaled through a block member affixed onto the base assembly, wherein a handle member is affixed onto the outer end of the shaft. A frusto-conical drum has a top cover, a bottom base, and an annular sidewall, wherein the sidewall has a plurality of openings therethrough. The top end of the drum rotatably communicates with the base assembly. A bracket member is affixed onto an outside surface of the bottom base of the drum, wherein the forward end of the shaft is mounted into the bracket member. A frusto-conical shaped screen member is contained within the drum.