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Home -Product -Screening - External Rotary Screen
External Rotary Screen
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The Externally-fed Rotary Screen (ERS) is ideally suited for process and wastewater streams containing high fats, oils, and grease loadings. The system operates by feeding the influent into a headbox, which distributes the flow evenly across the full length of the rear, upper external surface of the rotating drum. As water passes through the screen, solids are retained on the outside of the screen drum and are carried by rotation around to the front of the screen. A fixed doctor blade (with adjustable tension) removes the solids from the screen. The screened water cascades down inside the drum and falls through the bottom, creating a vigorous backwash action. |
This action, together with the use of internal water sprays, has a combined effect of self-cleaning the drum during each revolution. The ERS has a slotted wedgewire cylindrical drum that rotates on two pillow block bearings. The screen slot openings range from 0.040 to 0.010 inches. A TEFC motor fitted to a shaftmounted gearbox drives the rotary drum.
FEATURES:
- All 304 stainless steel construction
- Unitary frame
- Wedgewire drum
- TEFC motor and shaft mounted geardrive
- Headbox, with overflow protection
- Doctor blade assembly with Monel blade
- Internal spray bar
OPTIONS:
- 316 stainless steel construction
- Pneumatic operated doctor blade cleaner
- Variable speed drive or 2 speed motor
- Headbox level sensor
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