|
Sack filling and emptying
Alongside their FIBC fillers and dischargers, Spiroflow offer a comprehensive range of sack packing machines and sack tip units for 20 - 50 kg valve sacks.
The company’s range of machinery for low to medium volume sack filling include the Force Flow packer that can pack a wide range of difficult powders and granular materials into a variety of sacks. Utilising the principle of fluidisation, the unit’s powder chamber is pressurised, forcing fluidised material through the filling tube whenever the outlet valve is operated.
Most types of paper or plastic valve sack can be filled at rates up to five sacks per minute, but higher speeds are achievable by combining several machines and one operator can control up to four machines. The load cell based system with digital read-out offers high weighing accuracies.
Impeller packers enable a wide range of ground rock and powdered products to be decanted into valve sacks, weighing and packing up to four sacks per minute using a load cell based system.
Screw packers are designed to replace older gravity type packers with a cost-effective packaging solution for low volume users. Machines are able to handle poorly flowing materials that require the positive action of a powered screw. An important feature of this model is the integral ribbon type agitator in the feed hopper to ensure continuous discharge of material into the feed screw. This enables products with differing flow properties to be packed by a standard machine. Variable speed control of the feed screw allows adjustment of fast and dribble feeds to ensure accuracy.
The Turbo Packer is the latest addition to the company’s range and is designed for high speed handling of a wide variety of products with adjustable weight control and full management data. The machine is built for continuous operation without introducing air into the sack. It also has a lower profile than the Impeller and Force Flow packers, a major advantage in restricted workspaces.
Spiroflow's solution to the problem of dust generation during the sack emptying process is a range of sack tip units, most of then consisting of open-fronted sack tip cabinets with a dust extraction outlet for connection to an integral dust collector or existing extraction plant. Sacks placed on a mesh support shelf are manually slit, their contents falling into the inlet of a Spiroflow flexible screw conveyor, sized to meet the flow rate required (from 50 kg to 20tph). Integral agitators can also be provided for poorly flowing products.
Once empty, the sack is pushed to the back of the unit into a separate chamber that houses a large diameter slow speed auger which compresses the sack into a plastic bag which is tied off when full, eliminating dust problems and solving the problem of sack disposal.
Comprehensive testing facilities are offered by the company for all these systems.
www.spiroflow.com
|