Arched formwork for assembling arc-shaped plate of reaction tower of environmental protection equipment

The utility model provides an arch-shaped formwork for assembling an arc-shaped plate of a reaction tower of environmental protection equipment, which comprises a plurality of supporting columns, two arc piece profiling datum plates which are symmetrically arranged are fixed above the supporting columns, a plurality of arch height sample rods are fixed on the outer sides of the two arc piece profiling datum plates, arc pieces are placed on the arc piece profiling datum plates, and the arch height sample rods are fixed on the arc piece profiling datum plates. A connecting rod is arranged between the two symmetrical and corresponding arch height sample rods in a penetrating mode, a wedge-shaped block is inserted between the connecting rod and the arc piece, the wedge-shaped block is a triangular block, arc piece limiting blocks are arranged at the two ends of the arc piece profiling datum plate, the bottom of the supporting column is fixed to the bottom plate, and the bottoms of the arch height sample rods are