Abstract:
A method for screening with a screen assembly (10), the screen assembly comprising screening material having non-flat areas of screening material therein, the non-flat areas of screening material between lines of glue (13) gluing together a plurality of layers (11, 12) of screening material, the plurality of glued-together layers of screening material secured to a frame, the method comprising the steps of mounting the screen assembly (10) on a vibratory separator, the vibratory separator located in an environment at an ambient temperature, vibrating the screen assembly with the vibratory separator for a period of time, feeding material to be treated onto the screen assembly, the material to be treated at a material temperature above the ambient temperature, the period of time of such a temporal length and the material temperature of such a temperature to effect flattening of the non-flat areas of screening material.
Abstract:
A vibratory separator for separating solids from a fluid comprising a screen container (101) and a vibrating apparatus characterised in that said screen container (101) comprises a plurality of spaced apart substantially vertically arranged screen assemblies (60;120). A screen assembly for use in a vertical orientation in a vibratory separator, the screen assembly (60;120) comprising two sides of screening material (61;60A;132) spaced to form a central hollow (101a). A screen assembly comprising a support (18;16;32;151) for supporting at least one layer of mesh (14;16a;31;212) arranged thereon, wherein said support has first portion (12;33;151) which is generally flat lying in a first plane and a second portion (16;18;34a;154) in a second plane characterised in that, said first plane is substantially horizontal and said second portion (16;18;34a;154) rises in said second plane at an angle of at least 45° to a height of at least five centimetres
Abstract:
A method for making a screen assembly for a vibratory separator, the method comprising the steps of gluing together with glue at least two layers of fine screening material, allowing the glue to set to form an a glued-together at least two layers of fine screening material, preheating the glued-together at least two layers of fine screening material, placing the thus-preheated at least two layers of fine screening material in a heating apparatus, placing a coarse mesh layer on the at least two layers of screening material on the heating apparatus, placing on the coarse mesh layer a support with heat activated material thereon for adhering the support to the coarse mesh layer, and heating the coarse mesh layer, the at least two layers of fine screening material, and the support to adhere the support to the coarse mesh layer and to glue the at least two layers of fine screening material to the coarse mesh layer.
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:
An apparatus for separating material, said apparatus comprising a shale shaker and a screen assembly, said shale shaker having a mounting structure (450) on to which said screen assembly is releasably mountable, wherein one of said mounting structure (450) and said screen assembly has projecting member sized and configured so it is receivable in a corresponding hole or recess (452) in the other of said mounting structure and said screen assembly.
Abstract:
A method for making a screen for a vibratory separator, the method comprising applying glue in a glue pattern to at least one layer of screening material useful for screening fluid introduced to a vibratory separator, said applying done by powered moving mechanical glue application means. Preferably, the glue is heated moisture-curing hot melt glue, the method further comprising heating the glue. Advantageously, the method further comprises the step of spraying the screen to speed up the curing of the glue.The invention also relates to a screen and an apparatus for making a screen of the invention.