Why two types of Tubular Drag Conveyor?
One size does not fit all. Our engineers will only be too pleased to help you choose the optimum for your application.
Tubular Conveyor Selection Guidelines
1. The average operating speed range of a tubular conveyor is in the 5 to 55 ft/min cable/chain speed range.
2. It is generally advisable to apply a larger conveyor at a slower cable/chain speed if your material possess sluggish flow characteristics, is sticky abrasive or if the equipment operational duty cycle is extensive.
3. Smaller conveyor sizes and faster cable/chain speeds are usually selected when the material is free flowing and non-abrasive and/or the equipment duty cycle is low.
4. Future capacity requirements should be considered. It may be prudent to install a larger conveyor now, at a lower cable/chain speed, then increase the cable/chain speed later to accommodate a higher capacity. This can be done with the use of a variable frequency drive or gearing change.
5. Surges and uneven feed conditions should be considered. Surge hoppers may provide for more constant feeding and may allow use of a smaller conveyor.
6. Many forms of sludge do not flow well into or out of tubular conveyors. In applications involving sludge, it is generally advisable to oversize the conveyor by a factor of four or more and to never run the cable/chain at a speed above 20 ft/min. In all sludge applications, it is important to determine the characteristics of the sludge when it dries on the conveyor wall and cable or chain linkage. If it becomes too hard to be easily removed, another type of conveyor may be better suited.
Final equipment selection should be made by a Spiroflow engineer, who will consider the above as well as other factors and make a recommendation on a conveyor that will provide reliable service.
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