Regulation of granular materials moistening - - esp mould sand by feeler placed in flow path of material

摘要

Feeler capable of exerting limited movements in the direction parallel or opposite to the movement of moist granular material under the action of force exerted by the moving material, which depends on its moisture content, or the opposite action of a supporting spring, actuates electrically or mechanically the valve regulating the supply of water, or other liquid binders.