ADVANTAGES
– Light weight
– Durable
– Energy efficient
– High sludge removal rate
– Robust
USE
– Municipal Waste Water Treatment Plants
– Industrial Waste Water Treatment Plants
– River water Treatment Plants
– Refineries
– Desalination Plants
– Food and Dairy industries
– Pulp and Paper mills.
FUNCTION
Drive Unit
The motored gear is assembled on a vertically adjustable motor plate for tensioning of the power transmission chain. The transmission chain is made of acetal resin and is lubricated by the tank water. All moving parts are covered and protected by a light weight easy access aluminum hood.
Drive Shaft
The shaft is designed as a stainless steel tube with welded flanges. Plastic split sprockets are bolted to the flanges. The split sprockets enable maintenance without disassembly of the driveshaft. The drive shaft’s bearings are spherical long life heavy duty plastic bearings. The bearings are lubricated by the tank water. No additional greasing is needed.
Idler wheels
Plastic hubs with sprockets are fixed with collars on stationary solid stub end shafts. The shafts are secured in brackets that are welded to anchor bolted wall plates. Collector chain tensioning is available as an option.
Scraper flights
Fiberglass reinforced plastic and the sigma shaped profile of the flights makes it more corrosion resistant, rigid, strong and flexible to resist high sludge loads without compromising the safe operation. Our flights are always available in stock in various configurations.
The unique sigma profile gives the scraper a natural high durability and rigidity which is incomparable with others. No additional reinforcing plates or additives are needed to establish that.
We define the suitable scraper profile based on tank dimensions and sludge load, and supply scrapers to tanks up to 10 m wide in single configuration or 20 m with twin configuration. We have a vast experience of specially designed configurations.
The scrapers are equipped with skids and filler blocks for the strongest possible fixation of the chain’s attachment link. A number of scrapers are equipped with rubber strips to sweep the entire tank floor
Bottom strips and wall rails
Plastic skid strips on the tank floor and stainless steel wall rails guide and keep the scrapers in position. Our design makes the use of additional nylon wear strips on the wall rails unnecessary, which reduces maintenance costs.
Scraper collector chains
The plastic collector chain type NCS 720S is made of an acetal resin which is a highly suitable plastic when it comes to chemical-, corrosion- and wear resistance and yet does not compromise on the strength or durability of the chain.
The chain pitch is 6” or ~152 mm and the maximum break load is over 3100 kg. The chain is locked with simple snap-in pins.
Removal/installation is kept very simple with our special tool.
