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 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:
Methods for making frames for screen assemblies for vibratory separators, and screen assemblies with such frames, the methods, in certain aspects, including making a frame support for a screen assembly for a vibratory separator ( e.g. but not limited to with robotic welding apparatus), moving the frame support to cleaning apparatus to clean the frame support, heating the frame support, moving the heated frame support to coating apparatus, coating the frame support in the coating apparatus with protective material, allowing the coated frame support to cool so that the protective material sets, moving of the frame support in one aspect done by mechanical movement apparatus; and, in certain aspects, adding screening material to the frame to produce a screen assembly.
摘要:
A screen assembly (50) for a vibratory separator, the screen assembly having at least two layers (51) of screening material having a pair of opposing edges, the at least two layers of screening material having a top surface and a bottom surface and a side mount (60) arranged on each of said opposing edges, the screen assembly having a usable area of screening between the side mounts (60), characterised in that at least one of the side mounts comprises strips on the top and bottom surface of the layers of screening material characterised in that, said at least two layers of screening material has a portion at an angle to the strips beyond the edge of the usable area of screening material.
摘要:
A method for making a screen assembly (78) for a vibratory separator, the method comprising sewing together with sewing material at least two layers (83, 84) of fine screening material, placing said sewn-together at least two layers of fine screening material in a heating apparatus, placing a coarse mesh layer adjacent the at least two layers of screening material on the heating apparatus, placing adjacent the coarse mesh layer (82) a support (80) with heat activated material thereon for adhering the support to the coarse mesh layer (82), and heating the coarse mesh layer (82), the at least two layers (83, 84) of fine screening material, and the support (80) to adhere the support to the coarse mesh layer and the at least two layers of fine screening material to the coarse mesh layer.
摘要:
A screen assembly for a vibratory separator, the screen assembly having at least two layers of screening material having a pair of opposing edges, the at least two layers of screening material having a top surface and a bottom surface and a side mount arranged on each of said opposing edges, the screen assembly having a usable area of screening between the side mounts, characterised in that at least one of the side mounts comprises strips on the top and bottom surface of the layers of screening material characterised in that, said at least two layers of screening material has a portion at an angle to the strips beyond the edge of the usable area of screening material. A screen assembly for a vibratory separator, the screen assembly comprising at least two layers of screening material having a pair of opposing edges, a side mount arranged on each of said opposing edges, characterised in that said at least two layers of screening material are connected together between said side mounts, wherein said screen is flexible, such that the screen can be rolled or folded.
摘要:
A screen for use in a shale shaker, which screen (900; 920) comprises: (a) a support panel formed with a series of alternating substantially parallel ridges and channels, wherein at least the top of one of said ridges is substantially flat and is provided with at least one elongate opening which is wholly contained within said ridge; and (b) at least a first layer of mesh bonded to said support member, the arrangement being such that, in use, if the mesh covering said elongate opening in said ridge is punctured said mesh overlying said elongate opening can be removed and the open cell formed thereby fitted with a plug. A frame for supporting a screen, which frame comprises a plurality of spaced-apart strips (502) secured to and between spaced-apart sides (504), characterised in that at least one of said strips (502) is provided with at least one projection (553) to be received in a corrugation in a corrugated screen. A panel for a screen, said panel comprising a plurality of groups of perforations, each group comprising six generally equal triangular apertures (513, 514, 515) arranged with their apices facing a central portion (550), wherein the apices of two (514, 515) opposing ones of said triangular apparatus are spaced apart further than the apices of opposed ones of the remaining triangular apparatus (513, 513; 513, 513).