... structural principle(Weifang Lingwei Machinery Co.,Ltd):LWWD-type gold panning ship is the bucket gold panning ship, the equipment of the ... 1. Mining system: It is made up of the dredging bucket, chain, underwater big arm, upper and lower quadrangled wheel, ... up of cylinder rolling screen, gold selecting combinational chute and bucket, gold washing machine (roughing device), jig (cleaning equipment),it ...