Screen Basket For Pressure Screen

A screen basket for a pressure screen – also referred to as a pressure screen basket or screen cylinder – is the core screening component inside a pressure screen housing. The basket is manufactured from stainless steel wedge wire, with V-shaped profile wires resistance-welded to a grid of support rods. The basket operates under pressure, screening pulp slurries, mineral slurries, or other liquid-solid suspensions. Acceptable material passes through the slots while rejects are retained. The all-welded construction provides high mechanical strength, enabling the basket to withstand differential pressure without deforming.

The screen basket can be equipped with turbulence bars – also known as foils or scrapers – that are welded to the inside surface of the basket. These bars create turbulence in the fluid as it passes through the basket, preventing fibers from laying flat against the slot openings and improving screening efficiency. The turbulence bars also help to keep the slots clean by preventing the buildup of fiber mats on the screen surface. The design and spacing of the turbulence bars are customized to the specific application and operating conditions.

The basket is constructed with profile wires on the outside surface and support rods on the inside. The profile wires and support rods are welded at every intersection. For high-pressure applications, additional support rods are added, and circumferential stiffener rings are used to prevent the basket from collapsing. Profile wire sizes commonly used include 1×2 mm, 1.5×3 mm, and 2×4 mm. The basket can be manufactured with flanged ends or plain ends to match the pressure screen design. The hard chrome coating option provides improved wear resistance for abrasive applications.