Pipeline for pneumatic conveying of nano calcium

The utility model provides a nanometer calcium pneumatic conveying pipeline which comprises a steel pipe and a pneumatic conveying PU hose, flange elements are fixedly arranged at the two ends of thesteel pipe, the pneumatic conveying PU hose is coaxially arranged in the steel pipe in a sleeved mode, and an annular space is formed between the outer wall of the pneumatic conveying PU hose and theinner wall of the steel pipe. The two ends of the pneumatic conveying PU hose abut against the corresponding flange original parts respectively. The pneumatic conveying PU hose has the beneficial effects that the steel pipe is coaxially arranged outside the pneumatic conveying PU hose, so that the situation that the pneumatic conveying PU hose is aged, hardened and lost in elasticity due to directsunlight can be avoided, and meanwhile, the pneumatic conveying PU hose is coaxially sleeved in the steel pipe, so that the pneumatic conveying PU hose has a shaking space; the PU hose can be pneumatically conveyed convenientl