Sawdust Intake Plant

was asked to design a Sawdust and Shaving separation plant for a company in North Shropshire after a fire made their old plant obsolete. The company business was to recycle waste sawdust and shaving that they collected form wood working factory’s. They would separate the dust from the shavings. The shaving were then Bailed and sold for animal bedding. The dust was resold to a company thatmanufactured chip board

Intake Bin

The intake bin was constructed from RSJ’s, mild steel plate and plastic half tubes. The size of the bin was:-7925mm (26’) long x 2285mm (7’6”)wide x 4115mm (13’6”) high and weight was 13 Tons. In side the bin was 6 off 265mm (10.5”) steel augers running in the half plastic tubes.

At the back of the bin their was two augers on the horizontal and then their was four augers at a 10 degree Incline. Each auger was driven by a 7.5Kw(10Hp) geared motor unit via a 1” BS chain.

Dust Separator

This was constructed from angle iron, channel, mild steel plate and mild steel perforated plate (3mm holes). Inside the separator was a chain and flight conveyor running over the 3 off perforated plates, each plate has its own vibratory bolted to The under side of the perforated plate.

One the one side of the separator was a piece of 12mm steel plate which housed the bearings carrying the six augers. The augers were staggered across the bed of the separator to give an even feed of material to the separator. The dust separator was also set on a 10 degree incline. The chain and flight conveyor was constructed from 2” hollow pin chain was 50x50x6mm angle iron bolted to the chain via K2 attachment.

The conveyor travelled up the separator pulling the shaving to the top of the separator and dropping them into an 300mm auger which feed them onto a belt conveyor which transferred them to the bailing machine. As the returning flight came back down the separator it pulled the sawdust to another auger which moved the dust to a bulk store.

The whole machine was controlled via a PLC, with six invertors controlling the six auger. The machine was built in two pieces and transported to site and installed using a mobile crain. All of the work was done in house, Design, manufacture and installing.