This disclosure discloses a shaker screen. The shaker screen comprises a frame and at least one screen layer supported by the frame for sieving materials. The frame comprises a rectangular outer support structure, at least one lateral inner support member, and at least one longitudinal inner support member. The lateral inner support member comprises an aperture, and the longitudinal inner support member comprises a groove on a side of the longitudinal inner support member. The lateral inner support member is engaged with the longitudinal inner support member by engaging the aperture on the lateral inner support member and the groove on the longitudinal inner support member.

An example nonlimiting embodiment of the present invention provides a flow divider that includes a slurry receiving compartment and a discharge arrangement having a plurality of discharge apertures. The slurry receiving compartment is arranged to relatively uniformly flow a portion of a slurry into each of the discharge apertures. The discharge apertures may be arranged linearly and/or horizontally such that the portions of the slurry exits each of the discharge apertures at a relatively even flow rate and feed feed boxes connected to vertically tiered screening surfaces of a screening machine.

An example nonlimiting embodiment of the present invention provides a flow divider that includes a slurry receiving compartment and a discharge arrangement having a plurality of discharge apertures. The slurry receiving compartment is arranged to relatively uniformly flow a portion of a slurry into each of the discharge apertures. The discharge apertures may be arranged linearly and/or horizontally such that the portions of the slurry exits each of the discharge apertures at a relatively even flow rate and feed feed boxes connected to vertically tiered screening surfaces of a screening machine.

This disclosure is directed to a mobile recovery system and methods. The system may receive a medium containing particles to be separated. The mobile system may include several modules that may remove various particles or substances from the medium and/or treat the medium to change a characteristic of the medium. The system may be located on a mobile platform. The system may be configure to perform the desired functions and methods either in a temporarily fixed location or while in motion.

This disclosure is directed to a mobile recovery system and methods. The system may receive a medium containing particles to be separated. The mobile system may include several modules that may remove various particles or substances from the medium and/or treat the medium to change a characteristic of the medium. The system may be located on a mobile platform. The system may be configure to perform the desired functions and methods either in a temporarily fixed location or while in motion.

An apparatus for separating solids from solids laden drilling fluid is provided. The apparatus includes a shale shaker and a screen assembly. The shale shaker includes a base and a basket isolated from the base, a flow tray arranged in the basket for directing screened drilling fluid. The screen assembly includes at least one layer of screening material, a screen support having a perimeter with at least one support point within the perimeter, wherein the flow tray includes at least one raised portion to support the screen assembly. In some versions the shale shaker has a basket having side supports and at least one intermediate support arranged between the side supports. The screen assembly includes a screen support supporting at least one layer of screening material.

Methods and apparatuses for screening are provided. Embodiments include a screen basket apparatus for screening material, comprising a grid frame having a plurality of openings arranged in a lattice and a plurality of screening cartridge assemblies affixed to the grid frame to cover the respective openings of the grid frame. The screening cartridge assembly includes a case and a screen assembly fitted into the case, and may be affixed to a set of transversal member of the grid frame. The case may be formed of a single injection molded piece integrally formed by injection molding one of a polyurethane or a thermoset polymer. The screening elements together form a generally continuous screening surface across the exterior of the grid frame, which reduces blinding and is resistant to wear and tear.

An apparatus and methods secure modular repair plugs to one another to repair different sized cells of a screen. A modular repair plug is configured to attach to another modular repair plug to create an extended modular repair plug. The modular repair plug can fit within a first, smaller cell, and the extended modular repair plug can fit within a larger second cell.

A continuous microfiltration machine for removing suspended solid particles from process and waste water comprises a container (2) with an inlet conduit (4) defining a flow direction (F), and having therein an influent chamber (7) for feeding the liquid to be filtered, a treatment chamber (8) with a bottom wall (9), at least one pair of filter disks (10) keyed to a shaft (12) perpendicular to the flow direction (F) and having inner filter surfaces (10′) outer surfaces (10″) and outer peripheral edges (15) in sliding contact with the bottom wall (9), an effluent chamber (17) for receiving the filtered liquid, with a discharge conduit (18), drive means (13, 14) for imparting rotation to the disks, first jet washing means (20) directed against the outer surfaces (10″) of the disks (10) for removing the particles retained thereby, a first collecting duct (24) for collecting the removed particles, which is interposed between the disks (10) and has substantially parallel side edges (25) located at a predetermined minimum distance (D) from the inner surfaces (10′) of the disks (10). The inner surfaces (10′) of the disks are substantially flat and continuous surfaces, with a flatness error (ε) smaller than said predetermined minimum distance (D).

An apparatus for separating solids from solids laden drilling fluid is provided. The apparatus includes a shale shaker and a screen assembly. The shale shaker includes a base and a basket isolated from the base, a flow tray arranged in the basket for directing screened drilling fluid. The screen assembly includes at least one layer of screening material, a screen support having a perimeter with at least one support point within the perimeter, wherein the flow tray includes at least one raised portion to support the screen assembly. In some versions the shale shaker has a basket having side supports and at least one intermediate support arranged between the side supports. The screen assembly includes a screen support supporting at least one layer of screening material.