A screen arrangement (10) including a stringer (16), a securing arrangement (18), and a plurality of screen panels (20) adapted to couple to the stringer (16) by the securing arrangement (18). The plurality of screen panels (20) may each include a side notch (22) arranged to define a screen aperture (24) between adjacent ones of the plurality of screen panels (20) and the stringer (16) includes a stringer aperture (26) aligned with the screen aperture (24). The securing arrangement (18) may include an expandable part (28) adapted to extend from the screen aperture (24) into the stringer aperture (26) and a fastener (30) adapted pass between the screen aperture (24) and the stringer aperture (26) so as to expand the expandable part (28) within the stringer aperture (26). A related method is also disclosed.

A disclosed screening apparatus includes a subgrid, and a screen element attached to the subgrid via laser welding at a plurality of attachment positions such that, under vibrational excitation, the screen element has a pre-determined profile of vibrational motion relative to the subgrid. The screen element may be attached at a maximal number of attachment locations to the subgrid to minimize relative motion of the screen element and the subgrid under vibrational excitation, or the screen element may be attached a sub-set of the maximal number of attachment locations to allow vibrational motion of the screen element relative to the subgrid. A disclosed method may include attaching a plurality of screen elements to a respective plurality of subgrids, attaching the plurality of subgrids to one another to form a screening pre-assembly, and cutting edges of the screening pre-assembly to form the screen assembly having a perimeter with a pre-determined shape.

Disc screen for separating solid residues, which includes multiple parallel rotation shafts, each of which carries a plurality of discs fixed thereto. In addition, the disc screen includes multiple shaped rings, which are each constituted by multiple sectors removably mounted around the rotation shafts, and they are placed between the discs in order to simply and easily vary the screening section. The external edge of each shaped ring is provided with thrust sections, which are adapted to intercept the material to be screened in order to subject the latter to a greater stress, which facilitates a more efficient separation of the materials, and push upward components of light and filamentous material so as to prevent possible entangling and obstructions of such materials at the rotation shafts.

A screen panel for a vibratory machine is disclosed. The screen panel can include a reinforcing structure having a top surface. The reinforcing structure can define a plurality of apertures through the reinforcing structure. A polymer layer can have a bottom surface that is arranged over the top surface of the reinforcing structure. The polymer layer can define a plurality of apertures therethrough. Each aperture of the plurality of apertures of the polymer layer can be aligned with a single respective aperture of the plurality of apertures of the reinforcing structure.

A sifter insert for use in a sifting device has an insert frame and a screening media affixed thereto. An insert frame air channel is located within the insert frame. The sifter insert is sized to be received in a sifter box frame of an associated sifter box. The sifter box frame has a box frame air channel in fluid communication with the insert box frame channel of the received sifter insert. The passage of air through the box frame air channel and the insert frame air channel may cool the sifter box and the insert frame, and, may cool the screening media and the material being sifted thereon. Channel holes in the inset frame may direct air from the insert frame air channel to the screening surface of the screening media.

A shale shaker for separating formation cuttings from a drilling fluid includes a basket and a screen deck positioned within the basket. The screen deck includes a plurality of screens positioned on a plurality of screen supports, such that each screen is positioned on a corresponding one of the plurality of screen supports. Each screen includes a top side, a bottom side opposite the top side, and a mounting bracket positioned along the bottom side. The mounting bracket includes a pair of parallel first support members and a clamping bar coupled to and extending between the pair of first support members. Each screen support includes a pair of parallel second support members and a latch assembly including a hook assembly positioned between the pair of second support members. The hook assembly is configured to engage with the clamping bar to secure the screen to the screen support.

A sifter insert for use in a sifting device has an insert frame and a screening media affixed thereto. An insert frame air channel is located within the insert frame. The sifter insert is sized to be received in a sifter box frame of an associated sifter box. The sifter box frame has a box frame air channel in fluid communication with the insert box frame channel of the received sifter insert. The passage of air through the box frame air channel and the insert frame air channel may cool the sifter box and the insert frame, and may cool the screening media and the material being sifted thereon. Channel holes in the insert frame may direct air from the insert frame air channel to the screening surface of the screening media.

A screen assembly is formed by attaching side edges of a plurality of screen elements to each other. Reinforcing fibers may be embedded in the material of selected screen elements. The reinforcing fibers extend in a direction in which the screen assembly will be tensioned to secure the screen assembly to a screening machine. Hook strips may be attached to ends or sides of the screen assembly to facilitate mounting the screen assembly to a screening machine.

A modular screen support deck for a screening arrangement includes a first deck side having an inward facing side and an outward facing side and a second deck side having an inward facing side and an outward facing side. The first and second deck sides extend in parallel with each other to define a deck plane. A first extension structure is connected to the first deck side and extends inwardly from the first deck side. The first extension structure includes a first connection structure and a second extension structure connected to the second deck side and extending inwardly from the second deck side. The second extension structure includes a second connection structure arranged a distance from the second deck side. The support deck includes a first cross-member with a first and second ends, the first end being connected to the first connection structure and the second end being connected to the second connection structure.

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.