Vibratory separator screens

Abstract

Methods for making a screen assembly for a vibratory separator, a screen assembly made by such methods, and a method for separating components of a fluid with a vibratory separator with such a scren assembly; the method in certain aspects including sewing together with sewing material at least two layers of screening material (e.g., two, three, four or more layers; e.g, but not limited to, layers of fine stainless steel screening material), placing the sewn-together layers of screening material in a heating apparatus, placing a coarse mesh layer adjacent the layers of screening material on the heating apparatus, optionally placing adjacent 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 and the layers of screening material to adhere them together; and, if a support is present, also heating the support to adhere the support to the coarse mesh layer, and, optionally, with some adherence of the coarse mesh layer to the layers of screening material with the heat activated material.

Description

[0001] This application is a continuation-in-part of U.S. application Ser. No. 10 / 210,891 filed Jul. 31, 2002, which is a continuation-in-part of U.S. application Ser. No. 10 / 037,474 filed Oct. 19, 2001, which is a continuation-in-part of U.S. application Ser. No. 09 / 603,531 filed Jun. 27, 2000 which is a continuation-in-part of U.S. application Ser. No. 09 / 517,212 filed Mar. 2, 2000 which is a continuation-in-part of U.S. application Ser. No. 09 / 454,722 filed on Dec. 4, 1999 which is a continuation-in-part of U.S. application Ser. No. 09 / 390,231 filed Sep. 3, 1999; and this application is a continuation-in-part of U.S. application Ser. No. 09 / 707,277 filed Nov. 06, 2000 which is a continuation-in-part of U.S. application Ser. No. 09 / 183,004 filed Oct. 30, 1998 issued as U.S. Pat. No. 6,186,337 on Feb. 13, 2001--all of which applications and patents are incorporated herein in their entirety for all purposes and with respect to all of which the present invention claims priority under...

AI Technical Summary

Benefits of technology

0010] The present invention discloses, in certain aspects, a screen assembly with a tubular frame having four tubular frame sides in a generally rectangular configuration with one crossmember or a plurality of spaced-apart crossmembers extending between the peripheral tubular frame sides. For effective emplacement of such a screen assembly on a shale shaker whose bed or deck has an upstanding member projecting above the bed or deck (e.g. a

Problems solved by technology

With certain such screens, these areas of screening material are often rippled, or wavy, i.e., it is not flat and not, therefore, properly tensioned or not optimally tensioned.

A variety of problems and disadvantages are associated with such screens that have areas of rippled screening material: poor conveyance of solids across a screen; reduced screen life; and increased screen cost.

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