Suspension type underwater folding curtain

The invention relates to the field of dredging equipment, and particularly discloses a suspension type underwater folding curtain which comprises a floating frame assembly composed of U-shaped pipes and telescopic frames, a first ventilation seat, a connecting air pipe, a balancing weight, an air bag, a first curtain installed between the U-shaped pipes, a second curtain installed between the telescopic frames and a tightening steel cable. The suspension assemblies are mutually connected through the air bags, during use, suspension force can be provided for the whole system for fixing, the whole curtain can be folded and unfolded in the inflation and deflation process, the curtains are arranged on the telescopic frame and the U-shaped pipe correspondingly, the telescopic frame can form a blocking area at any position, and therefore the blocking area can be blocked. The whole device can be folded and stored conveniently, and the transverse and longitudinal extension range can be changed according to the ventil