Chain operated cleaning rakes intermesh with the bar rack, and elevate collected debris to a discharge point where each rake is wiped off before descending on the return side of the unit.
The “CAF” bar screen is designed to protect processing equipment by removing oversize debris from the sewage immediately upon its arrival at the pumping station or treatment plant.
The rake that cleans the screen is a cable operated, reciprocating design that descends on the upstream side of the bar screen, engages the bar screen at channel floor level, and ascends on the upstream side of the bar screen.
The “CLAW” bar screen is a rack and pinion bar screen previously which is known as the “RPFF”. From over last many years The “CLAW” which is heavy duty, front clean, front return type travelling rake mechanism transported on climbing carriage, is the standard for the industry with proven quality and reliability.
The “CLAW” shall be design to operate in a damp, wet, corrosive atmosphere. The material of construction is depending upon customer requirements and environment operating condition. All parts of the equipment furnished herein shall be amply proportional for continuous operation. Adequate lubrication shall be Provided for bearings, and lubrication points shall be readily accessible.
Catenary Bar Screen
Fairfield’s Catenary bar screen is the front clean front return configuration without sprockets, bearings or shafts below the water The cleaning rakes descend on the upstream side of the bar rack turns upward in a Catenary loop, meaning without sprockets engages the bar rack at the channel floor and ascends on the upstream side of the bar screen
Traveling Water Screen
A Traveling water screen from Fairfield is a cost efficient and customizable water debris removal system. There is no enhanced way to remove water debris than a traveling water screen.
Fairfield’s Traveling water screen is used to remove debris from the river or lake water, unlike bar racks and many other intake protection systems, which require costly monitoring and maintenance to keep free from blockages.
Screens are installed vertically in a concrete channel where debris clings to the upstream side of the ascending screen panels and is removed by water spray before the return run of screen panels descends on the down side of the screen.
Fairfield’s STREAM GUARD is heavy duty, fully automatic self-cleaning filter screen. The screen is capable of presenting a clean filtration surface to the oncoming liquid stream at all times during continuous operation. In addition, the screen is capable of intermittent operation in order to form a mat for maximum trash removal. The filter screen is suitable for installation and operation in the proposed flow channel having an angle of inclination of 60° to 80° from horizontal.
The screen provides dual filtration means it will stop the debris in two stage, first it will stop big debris at the teeth level and secondly it will stop small debris at shaft level in order to minimize compaction of the captured debris and increasing head loss through the units. The screen has clear spacing from 1 to 15 mm.
Rotating Drum Screen
The Fairfield Rotating Drum Screen meets and exceeds the expectations of operators worldwide with its innovative screening solutions. Not only does the Rotating Drum Screen remove solids, but it also washes and dewaters captured screenings. Along with a simple design and operation process, this screen has a high removal efficiency and low disposal costs.
Fairfield’s MBR SPIRALFLO systems are designed to address the screening needs of industrial and municipal process treatment plants.These quality units offer many design and operational benefits.
Shaft less Spiral technology enables efficient transport of stringy material or sludge. The shaft less, high-strength alloy steel spiral eliminates entanglement of solids around a shaft. No intermediate or end bearings are required, which reduces maintenance requirements.
Screening, washing, and compaction all are integrated into a single unit driven by one motor located at the top of the mechanism.