Cylinder Screens - Self-Propelled

No power is required to operate these self-cleaning, self-propelled single cylinder and T-screens, suitable for pumped intakes and gravity offtakes.

AWMA's Self-propelled Cylinder Screens offer a self-cleaning water screening solution, with a unique internal and external brush system, for applications where there is no power source available.

The propeller drive system on this model uses the waterway’s natural flow to rotate the external cylinder screen, which in turn self-cleans both sides of the wedge wire screen. A clean and efficient screening solution allows water to flow through the screen into the suction pipe, delivering clean water (with fish protection), without disrupting flow.

How It Works

The screen unit consists of a wedge wire cylinder, propeller drive systems, internal brush system and external brush system,
Water flows through the wedge wire screen medium (excluding debris and protecting aquatic life),
The propeller drive system operates automatically whenever the flow in the suction pipe exceeds a certain velocity, this in turn rotates the screen via a gearbox arrangement to self-clean the cylinder screen,
Fixed internal and external brush systems clean both sides of the screening surface, preventing biofouling,
Two sizes are available as standard with customised options upon request,
Suitable for flows between 3 ML/day (35L/s) and 37 ML/day (428 L/s),
Configurations for multiple screens, with a large flow capacity are available on request,
The self-cleaning screen ensures efficient operation, with fish protection, without comprising flow,
Retrieval systems include the AWMA Submersible Pontoon.

Features

Various screen aperture sizes available, typically 2mm slot width
Low maintenance stainless steel construction
Wedge wire screen medium is strong and durable
Self-cleaning with internal and external brushes
Even flow distribution over the entire screen surface
Retrievable or fixed position
Cathodic protection to minimise corrosion
Proven technology
Compliant with AUS/NZ Fish Screening Guidelines
Sustainable operation under heavy debris, sedimentation and biofouling conditions

Benefits

Sustainable operation under heavy debris, sedimentation and biofouling conditions
Protects fish from entrainment and impingement
Protects pumps and pipeline infrastructure
Reduces the loading on, or eliminates downstream fine filtration systems.
Improves water quality

Applications

Irrigation
Power plant intakes
Water extraction facilities
Cooling water intakes
Dam inlet towers
Seawater intakes

Manufacture

Four sizes are available with flow rates ranging from 3 ML/day (35 L/s) to 40 ML/day (463 L/s).
Whilst the screens are self-cleaning and require minimal maintenance, a number of options are available to retrieve the screen to the surface.

Operation

The propeller drive system on this model uses the waterway's natural flow velocity to rotate the external cylinder screen, which in turn self-cleans both sides of the wedge wire screen medium. A clean and efficient screening solution allows water to flow through the screen into the suction pipe, delivering clean water (with fish protection), without disrupting flow.

Early project involvement ensures development of the most appropriate mounting and retrieval options, eliminating the need for operators to work in, on or over water. Whilst the screens are self-cleaning and require minimum maintenance, a number of solutions are available for ease of screen retrieval to the surface, which include: