Uk Timber Case Study
UK Timber of Corby Northamptonshire is a leading supplier of both hard and softwood materials and products. They produce shiplap and tongue, grooved boarding and both hard and softwood decking. Also, solid timber gates and fencing, as well as bespoke hardwood furniture for both interior and exterior use.
Having grown considerably in recent years and investing in additional machinery for their mill, the temporary extraction solutions at UK Timber were no longer fit for purpose and were very labour intensive to empty and maintain.
Air Plants were invited to come forward with a solution that would not only improve the levels of extraction, but also eliminate the time required to empty their various extractors and discharge into a container or trailer for easy disposal.
With limited space available to locate a new filter and fan sets, it was decided to offer a Modulair Unit with 48 500mm diameter XL filter sleeves. The longer sleeve length enabled the unit to be located on a smaller footprint without compromising the overall filter area. The 500mm diameter sleeves are designed to handle the high volume of waste produced, which is predominantly oak with fairly high moisture content.
A 30Kw main fan is connected to the new suction main, onto which all machine connections bar one are fitted with blast gates. This ensures that the suction is directed to the machines in use, eliminating the need for a bigger than necessary main fan.
The extracted waste is transported from the filter by a 300mm diameter rotary screw, which is more reliable than a chain conveyor, will cope with high volumes of waste in concentrated bursts, and is virtually maintenance free.
A rotary valve releases the waste into a loading fan and then into a trailer with a closed loop transfer system. This returns the air from the trailer, resulting in a sealed system with no leaks to atmosphere.
The whole system is run by a control panel, sequencing the start up and shut down procedures and greatly reducing the risk of blockages on restart. On commissioning, the control panel is set up to the individual requirements of each application to ensure the system is tailored to the volume and waste type of each individual application.
In case of a delay in changing the container over, a secondary closed loop divert has been fitted so that waste can be diverted into a chip store in the interim period and avoid production losses. The store is connected to the suction main via a duct fitted with a blast gate, which enables the chip store to be emptied back into the main trailer once it has been changed over.
The customer is delighted with the outcome and the guys in the mill are not missing the arduous and dirty task of changing over full bags of waste twice a day. The yard is apparently bigger than it was previously despite a 40-foot container as several dozen 1-ton tote bags have now disappeared.