Screens, Conveyors & Grit Removal
Fairfield Services produces a wide variety of screens and screening related equipment to meet the high demands for municipal waste.
The MACH Bar Screen
The “MACH” bar screen is a package of mechanical chain operated bar screen previously which is known as CHFF, CHFB & CHFFM. For over last two decades, The “MACH” which is front raked, front/back return bar screen, is the standard for the industry with proven reliability. The “MACH” provides protection for the processing equipment by removing oversize debris from the sewage. 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 CLAW 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.
The LOCK LINK Screen
The Fairfield “Lock Link” design uses similar components found in our catenary screen, such as a durable head mechanism, sturdy stainless steel frame and bar rack. Unlike our Catenary which uses a welded steel chain, the Lock Link uses solid stainless steel link bars. The link bars and cleaning rakes descend on the upstream side of the bar rack, when the bar link system reaches the bottom of their travel, they articulate in the opposite direction in a catenary loop without requiring a lower sprocket. During ascension the rakes engage the bar rack at the channel floor and link bars lock together forming a solid frame. The entire Lock Link system is driven by a head shaft mechanism similar to our catenary design, eliminating the use of submerged mechanical components.
The Perforated Fine Screen
The perforated fine screen works on same principle as that of stream guard. water flows through perforated L shaped panels while debris are captured on the face of the element. the L shaped panels form a continuous belt which transports the debris to the discharge point where they are cleaned from panels by brushes and spray jet (optional). The debris is then discharged.
The 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.
Panels usually have square clear opening and fabricated of galvanized steel wire attached to steel angle frames by means of steel clamp bars and galvanized steel bars. Screen panels can also be fabricated of stainless steel wire.
Adjustable stealing strips will be used at basket ends on the vertical flights. No other clearance space in the boot or elsewhere which will constitute a water passage, whether between moving parts or between moving and stationary parts.
Water spray assembly with multiple nozzles is furnished to spray the full width of the screen panels and wash debris from the screen into a discharge trough. An electric solenoid- operated valve is furnished to actuate the water spray system when the screen machinery is operating.
The WEMCO Hydrogritter components are designed as a system to optimize each piece of equipment – both mechanically and hydraulically – to consistently produce long-term, high performance grit removal – automatically – with unmatched reliability, and low operation and maintenance costs. The WEMCO Hydrogritter, Cyclone and Classifier Dewatering Separator system removes and dewaters grit from primary sludge or influent. Protects other equipment from damage and delivers clean, dewatered product for safe transport and disposal.
FEATURES / BENEFITS