“Simple but effective” was the goal when ScreencO was designing the Trash Master 600, a high-volume receiving screen for both municipalities and private receiving plants.
The Trash Master 600 Auto Screen uses gravity to separate trash from the waste stream. Using a 6-inch inlet with dual fan spreaders, users have the option to offload vacuum trucks with a single 6-inch stream, or two 4-inch simultaneous streams at rates up to 800 gpm. Wastewater enters the Trash Master in an aluminum or stainless steel hopper which utilizes an 8-inch outlet cam and a 3/8-inch gapped 1/4-inch stainless steel bar screen. The bar screen separates trash from water and allows it to enter a stainless steel U-channel.
“The inlet fans move the flow stream onto the bar screens,” says Scott Meyer, owner of ScreencO. “The trash then moves to the U-channel separator to dewater and wash.”
Within the U-channel is an alloy steel shaftless screw measuring 11 1/2 inches in diameter. After washing, the shaftless screw acts as a conveyor, moving the trash to a trash bin. “The U-channel separator contains hundreds of elliptical drain holes,” Meyer says. “And it’s lined with a titanium ultra-high molecular weight liner to withstand years of wear and tear.”
The shaftless screw is the only moving part in the system, an intentional design in efforts to keep things simple and requiring little maintenance. Front and rear spray bars with 1 gpm nozzles keep the unit clean and free of buildup. The lower cover of the unit also contains two built-in 1 gpm nozzles for cleaner trash. Lever hold-downs allow for easy removal of the covers to access the U-channel and shaftless screw conveyor.
To achieve variable speeds, ScreencO uses a 3 hp Nord gear reduction drive with a Lenze variable frequency drive control, providing users with a range of 6 to 28 rpms. The drive is powered by a 220-volt single phase plug-and-play system.
Trash Master 600 systems are equipped with adjustable height legs and fork skids. Included with each unit is an OSHA-compliant catwalk for maintenance access and viewing. 208-790-8770; www.screencosystems.com
