Grounds of narameters loadinff-nrotected nozzle for screw convevers

Abstract

In order to protect the flexible screw conveyors from overloads and increase the productivity of cargo transportation, the principles offunctioning of existing structures of loading and protective attachments and other protective mechanisms have been analyzed, and rational design solutions have been proposed. Patented, manufactured and experimentally investigated the boot-protective nozzle of a flexible screw conveyor. Experimental investigations of elongation of a flexible screw helix under load are carried out and the interrelation between its deformation force and structural parameters is established. It is established that the magnitude of the relative lengthening of the screw spiral is stable and insignificant, and it is advisable to use this type of nozzle in practice, in order to regulate the gaps between the protrusions and the loading lines of the flexible screw conveyors. It was also found thatfor the overload of materials with a significant difference in density, the design parameters of the nozzles should be selected individually. The analytical dependencies are derived for determining the parameters of the most typical apertures for protrusion of nozzles for different types offlexible screw conveyors.