Mechanical Bar Screen
The equipment used for safely removing coarse & fine contaminants (dust, garbage etc.), in sewage treatment by screening, that are big enough to damage plant equipment is the bar type mechanical screen used at the water intake structures of treatment plants.
Rake bar type screens are categorized into two classes as mechanical screens and manual screens according to working principle.
Mechanical screens are called as
fine screens and
coarse screens according to the openings between bars.
Besides wastewater treatment plants; mechnical screen is used in pumping stations and water supply structures.
The equipment is mounted in open channels by an angle of 70-75 degree.
While screens having 15 mm or less bar opening are called as fine screens, the screens having 15 mm or more bar opening are called coarse screens.
Smaller than 5 mm fine particles you can look at our fine screens;
sieve bend screen or
rotary disc screens.
Mechanical screens produced by City Makine can be operated in a level- or time-adjusted manner through a PLC automation panel.
The automatically operated mechanical screen separates coarse contaminants from wastewater at the inlet channel and discharges the separated contaminants into conveyors or garbage containers, without the need for manpower.
Material Options
- Screen bar material AISI 304 (DIN 1.4301) quality stainless steel, epoxy dye-protected coating material St 37 (DIN 17100) carbon steel,
- Screen bar material AISI 304 (DIN 1.4301) quality stainless, hot-dip galvanized coating material St37 carbon steel,
- Screen bar material and coating material AISI 304 (DIN 1.4301) quality stainless steel,
- Screen bar material and coating material AISI 316 (DIN 1.4401) quality stainless steel.
Advantages of Mechanical Screens
- do not require labor force,
- can operate in a level- or time-adjusted manner,
- can be used in open or closed channel applications,
- suitable for high flow rates,
- can be produced as fine or coarse screens.