摘要:
An apparatus for making a screen unit for a screen assembly, the apparatus comprising a laminating station (310) having at least two rollers forming a nip through which layers of mesh are laminated and a finishing station characterised in that said finishing station comprises a bed (362) and a cutting device (363) for cutting said screen (360) into discrete screen units (360a).
摘要:
A method for mounting a screen assembly to a screen mounting structure of a vibratory separator to effectively seal the screen assembly in place, the method in certain aspects including locating the screen assembly on a screen mounting structure of the separator, positioning the screen assembly so that crossmembers (805, 806) of a four-sided generally rectangular support (800) of the screen assembly are either all parallel to or are all transverse to a direction of material flowing across the screen assembly, forcing two sides of the support of the screen assembly down with a crowning apparatus to effect crowning of the screen assembly, the support sufficiently flexible so that two sides thereof other than the two forced-down sides sealingly contact a surface of the screen mounting structure along substantially all of their length.
摘要:
A shale shaker for separating solids from a solids laden drilling mud, the shale shaker comprising a screen assembly (40) comprising a screen support (42) supporting at least one layer of screening material (48) having an outer periphery (48a) within an outer periphery of said support (42) said outer peripheries binding a peripheral area (46) characterised in that the periphery (48a) of the at least one layer of screening material (48) is planar with or recessed from at least a substantial portion of said peripheral area (46).
摘要:
A screen assembly for a vibratory separator, the screen assembly comprising at least one layer of screening material (54a) and a screen support (51) for supporting said screening material, characterised in that, said screen support (51) comprises a multiplicity of trusses and girders (53,54). The invention also relates to a vibratory separator having a screen assembly, of the invention fitted therein for separating solids from a solids laden drilling mud.
摘要:
A shale shaker for separating solids from a solids laden drilling mud, the shale shaker comprising a screen assembly (40) comprising a screen support (42) supporting at least one layer of screening material (48) having an outer periphery (48a) within an outer periphery of said support (42) said outer peripheries binding a peripheral area (46) characterised in that the periphery (48a) of the at least one layer of screening material (48) is planar with or recessed from at least a substantial portion of said peripheral area (46).
摘要:
A shale shaker comprising a screen assembly (940) , the screen assembly comprising a support (942) and at least one layer of screening material (950) , the screen support (942) having a periphery and an underside characterised in that a spacer (970-973) is arranged on the underside of the screen support (942) and wherein the shale shaker comprises fixing apparatus for fixing the periphery of the screen assembly (940) and a structural member underneath the screen assembly, the spacer (970-973) arranged between the screen support (940) and the structural member.
摘要:
A method for mounting a screen assembly to a screen mounting structure of a vibratory separator to effectively seal the screen assembly in place, the method in certain aspects including locating the screen assembly on a screen mounting structure of the separator, positioning the screen assembly so that crossmembers of a four-sided generally rectangular support of the screen assembly are either all parallel to or are all transverse to a direction of material flowing across the screen assembly, forcing two sides of the support of the screen assembly down with a crowning apparatus to effect crowning of the screen assembly, the support sufficiently flexible so that two sides thereof other than the two forced-down sides sealingly contact a surface of the screen mounting structure along substantially all of their length.
摘要:
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.