Double-effect cooling device for hot-rolled coil production

The double-effect cooling device comprises a steel plate, a conveying roller way, a rectangular box body, a heat pump and a condensation pipe, a mist collecting mechanism is installed at the upper end of the rectangular box body, and an active cooling mechanism is installed at the lower end of the rectangular box body; the mist collection mechanism comprises a circulation box, a collection part and a condensation part, the turbofan is installed between the circulation box and the rectangular box body, the collection part is used for collecting mist, the condensation part comprises a spiral partition plate, a spiral cavity is formed between the spiral partition plate and the circulation box, the mist enters the spiral cavity through the collection part and is discharged, and the heat pump extends into the spiral cavity. The mist forms condensed water through the condensation pipe and flows back to the water tank through the spiral cavity. The mist collecting device has the advantages that mist can be collected