Solids i.e. sand, trapping device for degritting element to convey e.g. charged water pipe, has opening formed in bottom of trough to permit transported solids to fall and to supply pit on surface with solids for permitting cleaning of pit

摘要

The device has an opening (g) formed in bottom of a trough (f) to permit the transported solids i.e. sand (h), to fall and to supply pit having direct access on a surface with the solids, for permitting cleaning of the pit without passing through the opening. The opening is arranged in the trough to trap the haulage, and is closed to insulate the pit of main flow by a trap system (i) to allow cleaning of water by maintaining the normal flow conditions. The opening of the trough is dimensioned according to the flow characteristics and characteristics of the solids and transported products.