THE FLEXRAKE OVERVIEW - WASTEWATER

The Duperon FlexRake

The Duperon® FlexRake® is simple, consisting of three basic components: a powerful drive head, a durable raking device, and a rugged barscreen. This simplicity is possible through the multi-functioning action of the FlexLink. This clever patented design allows the link to function as a frame, lower sprocket, and connection point for scrapers. The innovation of the FlexLink creates a "square" sprocket, affording the FlexRake® the unique ability to hit the base plate of the unit frame with a scraping, shoveling action that moves debris up the screen, eliminating accumulation at the bottom of the channel.

Only the FlexRake® offers industry-exclusive Thru-Bar technology, with a scraper designed to clean 3 sides of the bar. On FlexRake® FPFS models, Duperon's® barscreen utilizes custom tear-shaped bars with a 50% screening efficiency for .25" bar openings, resulting in more favorable flow characteristics and less headloss.
 

How the FlexRake works...

Step 1
The FlexLink articulates to a 90 degree angle, closing on the drive pin. Once closed, the sprocket drives the link system forward.
Step 1
As it leaves the drive sprocket, the FlexLink locks into a solid bar, forming its own frame. (It works similarly to a knee or elbow.)
Step 1
As the FlexLink chain and attached scrapers reach the bottom of the screen, the FlexLink forms its own lower sprocket.
Step 1
Once the links turn to travel up the screen, they are engineered to allow clearance around the pin and water lubrication, allowing stainless on stainless movement without gouging or wear.
Step 1
Industry-exclusive full-penetration technology features scrapers designed to clean 3 sides of the bar, as well as horizontal cross members.
Step 1
Multiple scrapers placed every 21 inches continuously rake the barscreen. With screen head loss minimized, some sites report a 3x greater capture rate than with their previous machines.