Jacopa® Spiral Screen

The Jacopa® spiral screening equipment is used for the removal of fine solids. The screen utilises a shaftless spiral which elevates the collected screenings up & out of the effluent flow. This screen is generally used for treating flows of up to 300 l/s with a 6mm 2D filter basket.

Spiral screening equipment is available for solids transport and for the mechanical pre-treatment and treatment of wastewater, waste solids and sludge. The use of shaftless spiral technology on all machines guarantees a reliable machine with reduced maintenance costs even when handling difficult solids. Following intensive testing at the National Screens Evaluation Facility (NSEF) in the UK, Jacopa’s Spiral Screen achieved the best ever Screening Capture Rate (SCR) of any spiral type screen. In a total of 12 tests conducted at the NSEF, (November 2008) the Jacopa Spiral Screen successfully removed all gross solids (greater than 6mm in two dimensions) from the flow, achieving an SCR of 54%.

Spiral screens can be inclined at either 35° or 45°, and the spiral screen baskets range from 200 and 900mm in diameter in increments of 100mm. Screen apertures range from between 2 and 10mm.

The Jacopa Spiral Screen is composed of loading basket (drilled sheet or wedge wire depending on aperture/spacing requirements), transportation section, compaction zone, discharging section (with cutter) and adjustable feet.

The Jacopa Spiral Screen can be installed directly into new or existing channels. The screens incorporate a low speed of rotation, and requires no intermediate supports. Self-cleaning brushes are fitted to the heavy-duty extractor screws allowing the screening basket to be cleaned as the basket becomes blinded. Reduction of screenings weight at the discharge is up to 50%.

Features and Benefits include Stainless steel screen and main body (AISI 304 or 316); Hardened liner wear strips provided extended life in the conveyor section; Low powered, fixed speed drive; Fully enclosed machine; No bottom or intermediate bearings; Low installation, operation and maintenance costs; Available as package unit in pre-fabricated tank (inlet and outlet connections provided); High Solids load screen available Wedge Wire design for finer screening; Bag Filling system (optional); Transport section tubular or U – Section;  Variable conveying lengths for design specific applications; Insulating and heating options available and Optional hinged design allowing the screen to pivot out of channel for maintenance.