Mechanical Rotary bar display is a devoted unit intercepting sound waste from water, it can cleanse flotage in all designs routinely and repeatedly. When the water flows by means of the hole of bar monitor, the bar display tends to make round motion in proper course by reduction equipment, and intercepts solid squander from water. The bar display screen requires flotage up to the best. Most of flotage falls down by gravity, other folks cling into the hole of bar creen clean the bar sceen by reversal cleaning brush and uniformly drop into screw conveyor. Every single team of bar screen tends to make relative movement, so that bar screen can make self-cleaning by chain wheel and track. As the bar display screen chain is enclosed, so it can clear the flotage in the water immediately and repeatedly.