Front tensioning and defrosting structure of lotus seed quick-freezing conveyor belt

The utility model discloses a front tensioning and defrosting structure of a lotus seed quick-freezing conveyor belt. The front tensioning and defrosting structure comprises a leading-out chain wheel of a tensioning structure, a tensioning chain wheel, a left positioning chain wheel, a right positioning chain wheel, a front driven chain wheel and a net belt, and is characterized in that a transverse spray pipe is arranged in a left inner space which is arranged between the left positioning chain wheel and the right positioning chain wheel and is positioned above the net belt, a longitudinal upright air box is arranged in a right inner space which is arranged between the left positioning chain wheel and the right positioning chain wheel and is positioned above the net belt, a plurality of spray holes are uniformly formed in a lower pipe surface of the spray pipe, a blind cover is arranged at a port of the spray pipe, and another port of the spray pipe is communicated with a water source pipe by a valve; the air box comprises a rectangular box body and a big-end-up butt joint body which is in the shape of a trapezoidal hopper, a downward opening is formed in the rectangular box body, and an air inlet pipe which is fixed to an opening in a side wall of the rectangular box body is communicated with a pipeline of an exhaust outlet of an air blower; a pool is fixed to a position below the net belt and corresponds to the spray pipe. The front tensioning and defrosting structure has the advantages that water is sprayed on the front net belt, air is intensely blown to the front net belt, defrosting, water removing and heating effects are realized for the front net belt, accordingly, adhesion and fixing of locus seeds can be prevented, the front tensioning and defrosting structure is favorable for uniformly cooling and freezing the lotus seeds, and adhesion of the lotus seeds on follow-up net belts can be prevented.