A environment -friendly grit feeding system for concrete production

The utility model discloses an environment -friendly grit feeding system for concrete production, receive the unit of expecting to unload, categorised defeated expect to return warehouse receipt unit,storage silo and concrete mixer pay -off unit including the classification, the storage silo includes sand feed bin and building stones storehouse, the unit is unloaded including unloading well roll-over to the categorised material of receiving, categorised defeated material returns warehouse receipt unit including first transport piping lane, concrete mixer pay -off unit is including being usedfor the follow sand material and/or building stones that the storage silo fell carry the second in the concrete mixer to carry the piping lane, first transport piping lane and second transport pipinglane all include the conveyer and are used for covering the closed piping lane of the conveyer scope of operation, the both ends of piping lane correspond and link up unload well roll -over and storage silo, perhaps correspond