Chain scraper

RC

CATEGORY SEWAGE
TYPOLOGY CLARIFIERS

WHEN TO USE IT

The chain scraper type RC is commonly used in rectangular tanks and has the specific function of conveying in a lateral hopper the sludge deposited on the bottom of the tank and possibly clean the surface of the water from floating substances, conveying them in a transverse channel.

HOW IT’S MADE

The chain scraper consists of: a gear motor drive unit; a motor shaft positioned on the end of the tank with two crowns at the ends; two drive chains of the blades; three or more idle shafts complete with toothed crowns; set of scraper blades; set of sliding guides mounted on the long side walls and on the floor.

HOW IT WORKS

The gear motor transmits the rotary motion to the shaft, which, through the two lateral crowns, sets in motion the two drag chains. On the opposite wall is placed a return unit that has the function of tensioning the chains, appropriate guides hold the chains in place avoiding bending due to the own weight and the scrapers. The peculiarity of this scraper consists in the double funcion of the scrapers, in fact, during the lower run, they push the sludge into the recovery hopper while during the highler run they convey the floating material into the lateral.