Classification of External Rotary Drum Screen

External Rotary Drum Screen is a major solid-liquid separator. It is used in small and medium-sized wastewater treatment plants to continuously and effectively remove suspended solids. In some wastewater treatment, 30%~60% of the organic or inorganic suspended matter will be removed after filtration, which can greatly reduce the post-treatment load. The External Rotary Drum Screen is composed of assembled drum, cover, filtrate tank, transmission device, washing device, scum scraper, frame, etc. When the External Rotary Drum Screen starts its filtering work, the gear motor drives the drum screen to rotate, and the floating solids in the wastewater are trapped on the screen after filtration and transferred to the drum screen to scrape the residue. At the same time, use a washing device to backwash the surface of the screen. The washed grill slag slips into the garbage truck or conveyor.

Here is the content list:

1. External Rotary Drum Screen

2. Internal Rotary Drum Screen

External Rotary Drum Screen

The external water inlet type External Rotary Drum Screen is a French triangular stainless steel drum-shaped fine screen. With the advantage of not being easily blocked by dirt, it replaces the shortcomings of easy blocking of the past round holes or nets. During the operation of the External Rotary Drum Screen, sewage and dirt particles are separated in the "upper semicircle" of the screen. The filtered water penetrates the screen, flows down and flushes the gap in the "lower semicircle", and then flows down to the treated water tank for filtering. Synchronous function with backwashing; dirt and solid particles are left on the surface of the screen, are rotated by a scraper or a rotating rubber plate, and fall into a separately made dirt storage tank. With 25 years of experience, thousands of Eco Sieves continue to operate in the production process of sewage treatment plants and various industries to perform their excellent sewage interception and solid-liquid separation tasks.

Internal Rotary Drum Screen

The internal water inlet type External Rotary Drum Screen adopts a triangular stainless steel drum screen. With the advantage of not being easily clogged by dirt, it replaces the shortcomings of round holes or nets that are easy to block. During the operation of the External Rotary Drum Screen, sewage and dirt particles are separated in the "lower semicircle" of the screen. The filtered water penetrates the screen gap and flows into the treated water tank, while the dirt is sunk in the net through the blades with special angles. Push the dirt out of the net and drop it into the dirt storage tank in advance. The screen is also equipped with two sets of dirt spraying pipelines inside and outside to spray a small amount of retained dirt away from the screen. With 25 years of experience, thousands of Eco Sieves continue to operate in the production process of sewage treatment plants and various industries to perform their excellent sewage interception and solid-liquid separation tasks.

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