Abstract:
A screen assembly is disclosed. The screen assembly may have a feed hopper manifold, in series or parallel. The screen elements are in the form of a single flow directing channel, and the elements are individually replaceable. Such elements may be in the tubular or channel form.
Abstract:
A screen assembly for separating solid materials of differing sizes in a material stream, having a support, and a screen arrangement placed upon the support, wherein the support has at least one seal placed on the support, the seal configured to interface with a mounting surface of a shaking apparatus.
Abstract:
Mechanical separators and screening machines, and methods for flexible sieve mat screening and flexible mat conveying are disclosed. In an example configuration, a flexible mat screening apparatus is provided with geometrically optimized guiding edge seals at lateral sides. One preferred configuration includes an assembly wherein a sieve mat has upwardly curved lateral sides forming a non-vertical, gradually curved shape. In another configuration, a movable support section is supported on a main frame section via a plurality of shear blocks, each arranged with its compression axis disposed horizontally. In yet another configuration, the movable support section is further connected to the main frame section via vertical stabilizers or leaf springs, the vertical stabilizers permitting longitudinal movement between the movable support section and the main frame section, but inhibiting vertical and/or lateral movement therebetween. Yet another configuration includes a boltless mat section attachment assembly.
Abstract:
An assembly for sealing a shaker screen assembly in a shaker separator includes a substantially inflexible gasket affixed to each screen support and a flexible gasket affixed to each screen support such that the screen frame rests atop the gaskets on the support around its periphery. A wedge block retainer bracket is affixed to each side wall of the shaker separator above the corresponding section of the screen frame. A wedge block is selectively drivable into the space between the wedge block retainer bracket and the corresponding section of the screen frame, providing force thereto sufficient to seat the screen frame against the inflexible gasket and to compress the flexible gasket between the screen frame and the screen support, thereby providing a substantially fluid tight seal.
Abstract:
The invention pertains to a sieve bed for a sifting machine, consisting of rectangular sieve elements (10), which are attached to a support frame (1) with their edges abutting each other, the support frame being provided with mushroom-shaped mounting pins (3), each of which is provided with a head which engages in an interlocking manner in corresponding recesses (11a and 11b) of the sieve elements (10). To facilitate the assembly and disassembly of the sieve elements in a sieve bed of this type and to protect the connection from premature wear the invention proposes that the receptacle (11) for the head (4) of the mounting pin (3) be closed off at the top; that the receptacle (11) for the head (4) of the mounting pin (3) be provided at the bottom with an entrance opening for the head (4) of the mounting pin (3); and that the wall of the receptacle (11) be provided with an inward-projecting bed (12), which can be snapped under the head (4) of the mounting pin (3).
Abstract:
An embodiment of the present invention, accordingly, is directed to a tensioning device (46) for tensioning a screen relative to a wall (14a) of a separator in a manner so that the proper tension can be applied to the screen in a relatively quick manner and yet the screen can be easily removed and a new one installed.
Abstract:
A support structure for a screen assembly for a vibratory separator, the support structure comprising a body member (20; F; 70) with portion (20; F; 71) having at least one opening therethrough (24; 41; 42; 43; 44; 45; 46; 47; 76), and integral side portions (36,38) foldable to form a pair of spaced-apart integral side members. A screen assembly comprising a support structure of the invention, and further comprising at least one sheet of screening material (11, 12, 13; 80) over said at least one opening (24). A vibratory separator comprising at least one support screen or screen assembly of the invention. A method of making a screen support and a screen assembly of the invention, comprising the steps of forming a blank and folding said blank to form a pair of spaced-apart integral side members.
Abstract:
A papermaker's screen cylinder (10) has a screen body (11) formed as a helical strip (15) of sheet material being joined along marginal edges to form lock seams (18), and mounted on end rings (12, 13). The strip (15) may be perforated with openings therein such as holes or may have openings or holes formed therein after being helically wound. The strip (15) is preferably corrugated transversely of its width with corrugations (21, 22) that extend parallel to the edges of the strip so as to enhance the beam strength of the strip. The end rings may be formed of stainless steel or may be formed of a polymer or composite material (36) bounded on the ends of the cylindrical screen body and retained by embedded anchors (40) extending through the screen body and into the material of the rings.
Abstract:
A tensioning member for a blade screen that permits simultaneous tensioning of a plurality of blades in a blade screen, such as for wood chip sorting. The blades may be provided with a sawtooth detail on a bottom edge to reduce the build-up of wood ribbons or fines that would otherwise occur. An elastomeric joint is also provided which allows a dual-frame blade screen to be assembled, while compensating for any phase angle error between eccentric shafts provided to agitate the wood chips by moving the screens.
Abstract:
A method and apparatus for separating material are described. The material separator may include a frame comprising a base supporting a slanted grate deck and at least one reducer grate deck removably and pivotally coupled to the slanted grate deck. The method may include: removably and pivotally placing a removable reducer grate deck on a slanted grate deck; depositing excavated material on the removable reducer grate deck such that the material is separated by passing through both the removable reducer grate deck and the slanted grate deck; and releasing clogged material between grate bar members of the reducer grate deck and the slanted grate deck by engaging at least one internal bumper of the reducer grate deck with the moving equipment to push a free, non-pivoting end of the reducer grate deck upwards to release the clogged material.