The spiral conveyor is a special type of vibratory conveyor that transports the product vertically. The product moves up the spiral as the conveyor vibrates.
The spiral conveyor combines the advantages of gentle product handling and vertical transport with vibration technology for bulk products suitable for feeding or in combination with thermal treatment. Transport is done via the micro-throw motion known in the vibrating technology. The operating parameters like vibrating stroke, frequency and angle of attack (throw-angle) will be selected individually to the application. The JOEST spiral conveyor for thermal treatment is suitable for
operation with different types of heat exchange media and temperatures. Special design for convective heat exchange is available too. Optionally, aspiration or overflowing of the transport surface is possible depending to the application. Static or co-vibrating housing is disposable. The design of the flights developed by JOEST enables an efficient heat exchange.
A high level of mechanical stability is achieved by welded lateral curb execution. Additionally the typical reduction of material thickness in the bending radius of press formed flights is not applicable. Two unbalance motors with adjustable angle of attack on the drive saddle, displaceable vibrating stroke and operation with frequency converter provides an efficient operation.
Different types of heat exchange media and temperatures
Convective heat exchange
Several variance of operation manipulation
Non-standard installation sizes and -designs
Mild steel and various types of stainless steel
Aspiration or overflowing of the transport surface
Static or co-vibrating housing
Outside spiral diameter: 320 up to 1400 mm
Lifting height: up to 8.500 mm
Drive power: 2 unbalance motors up to 6 kW each
Feeding capacity: up to 12 m3/h (basing on plastic pellets)
Material of construction: Mild steel and various types of stainless steel
Heat exchange medium: Water, steam, thermal oil
Specific design to your application
High mechanical stability
Gentle vertical transport
Simultaneously feeding and thermal processing
Efficient heat exchange