Abstract:
Die Erfindung betrifft eine Vibrationssiebmaschine (5) für Asphaltmischanlagen mit Siebeinsätzen (1a, 1b) die an Spannbalken (2) im mittleren Bereich der Maschine befestigt sind. Zur Befestigung des jeweiligen Siebeinsatzes (1a, 1b) weisen sowohl dieser Siebeinsatz (1a, 1b) als auch der jeweilige Spannbalken (2) Rohrabschnitte (14, 16) auf, welche entlang einer gemeinsamen Achse (Y) abwechselnd hintereinander angeordnet sind und von einer Kopplungsstange (17) durchdrungen werden, derart, dass der Siebeinsatz (1a, 1b) und der Spannbalken (2) formschlüssig in Siebspannrichtung (S) und in beiden Richtungen senkrecht dazu miteinander verbunden sind. Soll die Formschlussverbindung getrennt werden, kann die Kopplungsstange (17) axial aus den Rohrabschnitten (14, 16) herausgezogen werden.Hierdurch ergibt sich gegenüber dem Stand der Technik der Vorteil, dass ein einfaches und schnelles Austauschen von Siebeinsätzen (1a, 1b) möglich wird.
Abstract:
A method and apparatus for altering the reflectivity of a screen when light is supplied to a portion of the screen is disclosed. The orientation and shape of wires disposed on at least one bar of the screen is controlled to alter the reflectivity of the screen. Also provided is a method and apparatus for supporting a screen on a surface such as a wall, including placing slots within the screen for mating with connecting members mounted on a support frame connected to the surface.
Abstract:
A shale shaker (10) or vibratory separator which, in one aspect, has a base (22), vibration isolation apparatus on the base (22), a basket (12), mount apparatus (16) for mounting the basket on the base (22), and at least one of the base (22), basket (12), and the mount apparatus (16) made of, encased in, or coated with composite material which, in certain aspects, is all or part flexible composite material; and methods of using such separators and shakers.
Abstract:
A screen support panel for vibrating screens, comprising a frame defining a respective secreen area between two lateral walls (2) of the structure of said screen. Each frame of the support panel comprises longerons (11), crossbars (12, 13), and braces (14), which are jointly removably affixed to the structure and carry a screen (20).
Abstract:
The invention concerns a screening method and machine for size sorting in a fluid (9), into two categories, of materials with different volumes and density close to that of the fluid used after total immersion in said fluid. Mechanical stirring (6) means upstream of the sieves, optionally combined with the use of surfactants in an aqueous medium, maintain said materials to be size-sorted suspended in said fluid. The fluid circulates from upstream to downstream of the sieves. Only the materials below a certain size, volume or weight, maintained suspended in the fluid, pass through the size-sorting sieves (15). The sieves are immersed in the fluid and do not slow down the liquid flow passing through them. To obtain further size-sorted categories, it is possible to organise the inventive process sequentially. The invention is useful in poultry processing plants, processing feathers and down for padding purposes, purifying foreign matter in pasty mixtures and the like.
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 screen assembly according to the invention screens material by size and includes first (61) and second (62) sets of transversely spaced apart, longitudinally extending first (63) and second (64) members respectively. The members are parallel to each other, and some members (64) of the second set (62) are located between some members (63) of the first set (61). At least one of the sets is mounted to vibrate along a longitudinal axis (19) to feed material therealong. A plurality of longitudinally spaced apart, transversely extending third members (68, 72) are located between adjacent first and second members so as to define a plurality of screen openings (77) between the first, second and third members. Third members (68, 72) are mountable so as to be out-of-phase with vibrations of the said at least one of the first (61) or second (62) sets of longitudinally extending members. The screen assembly can be installed in a vibrating conveyor, such that the first members (63) vibrate with a pan (22) of the conveyor, so as to feed material along the first members (63). With a dynamically balanced conveyor, the second members (64) are connected to a structure (33, 41, 43, 45) for dynamically balancing the conveyor, and thus are vibrated out-of-phase with the first members (63).
Abstract:
An apparatus for separating fine material from coarse material. The screens at present in use in the mining industry usually are so-called shaking screens. They comprise a screen-cloth, which is subjected to a vibration movement. This type of screens, however, has a very high oise level and also is exposed to heavy wear owing to the vibrations, to which the screen parts are subjected. The present invention has the object to provide an apparatus of the kind referred to above, at which the noise level and the mechanical wear are substantially lower than at conventional screens. The apparatus according to the invention comprises a perforated stationary screen-cloth (9) supported by members (10, 11, 12), which are interconnected to a closed chain (17) in such a manner, that the support members can be moved along an endless path, and means (11b, 13, 24) for rotating the portions of the support members (10, 11, 12) abutting the screen-cloth (9) in the direction opposed to the direction of movement.
Abstract:
Screening members (16), screening assemblies (10), methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface (11) configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.