... YSH model double helix conical mixer consists of spraying device,transmission parts,lid,helix,barrel,discharge valve and so on. Features ... model double helix conical mixer consists of spraying device,transmission parts,lid,helix,barrel,discharge valve and so on.Spraying ... device:fittings,sprayers fixed on the lidTransmission parts:YSH model double helix mixer adopts planetary pin-cycloid ...