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SCREW CONVEYORS
BU - TAPERED TWIN SHAFT SCREW FEEDER
The twin screw bn dischargers nuc derive from many years of experience in application and testing against many materials accumulated over the last 15years by WAM. The refinements and improvements made to these bin dischargers make them ideal to guarantee discharger of variety of materials including: miling products(flour, bran, etc.), non homogeneous products(woodchips, paper, etc.), bridging products(sawdust, soya, etc.). The nuc dischargers are constructed of mild steel. An upper flange is fitted to meet the outlet of the bin/hopper. There are 2 tapered screw, flights inside, both of them having a progressively bigger pitch. The through is tapered to match the screw flight diameter.
This construction gives the following advantages:promote mass flow; gives wide feeding surface; avoids bridging; avoids segregation; gives constant feeding even for very difficult products; very robust construction; extremely reliable;gives perfect trough cleaning.
CA - TYPE"U" "V" SCREW CONVEYORS
LIGHTWEIGHT VERSION:suitable for use in sectors where heavy-duty systems are not required(e.g. animal feed, plastics, soap and detergents etc.).
HEAVY DUTY VERSION:used in the following sectors:effluent treatment and the steel industry.
EXTRA HEAVY DUTY VERSION:suitable for the mining and cement sectors. Drive systems range from 0.55kw to 300kw.
CAO - TUBULAR TROUGH SCREW CONVEYORS
"CAO"s are used in various industrial application. According to customers' requirements, the following standard had been developed:Light duty for flour milling, animal feed milling for products such as:cereals, flours and meals, as well as their by-products, detergents and respective raw materials. Heavy duty for steel, chemicals, effluent treatment for products such as:bentonite, sand and carbonate, sludge. Extra heavy duty for:cement production, plaster production, lime production, processing of solid waste and refuse for products such as:cement, piaster, lime, bones, fat, etc.
TU - TUBULAR SCREW CONVEYORS AND FEEDERS
Consist of: external tube with fully welded inlet and outlet(choice of angles), continuous fligthing welded onto an internal rotating pipe, two end flanges incorporating bearings fitted with long-lasting seals, where appropriate, intermediate hanger bearing.
The drive options are: bae shaft, direct drive, with flexible coupling, with chain transmission.
Other options: special seals, special end bearings, special flighting, special intermediate bearings, variable speed drive.
SPL - METERING SCREWS
High capacity screw feeders(big diameter or high speed) are used in industrial plants to reduce as much as possible the dosing time. As consequence there is a loss in accuracy. This problem is solved with a small and precise screw feeder situated under the outlet of the big screw feeder. The so-called SPL-metering screw completes the last phase of the batching, called fine dosing.
OPERATION:Both screws start up. A short time before the requested weight is reached, the big screw stops(e.g.by proximity switch). The end of the batch is given by SPL. The time depends on the specific condition of the application(inclination of the screw feeder, type of product,...).
