Standard screw conveyor features

Standard sizes of screw, casing and component details are now readily available for general use and equipment for simple applications can be specified by non-experts from guidance 

The deflection, 5, of a screw supported at both ends in simply supported bearings is  

It is therefore necessary to understand the limitations of this class of equipment perhaps even more than the many and varied advantages that can be exploited. These mainly depend on the intrinsic nature of the bulk material that is to be handled, therefore the first task of an engineer faced with the selection of equipment for a solids handling duty is to recognise those features that may give rise to unsatisfactory operation. 

It is vital for reliable operation that the physical properties of the bulk material are known and within the capability of the screw to handle. An LMech.E document (I.Mech.E. 1994) outlines the interesting aspects of a bulk solid that should be determined in all bulk solids handling applications. 

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