Water pressure resistance structure of energy-saving automatic equipment for trapping common fingerlings in deep sea of public sea

The utility model discloses an energy-saving type automatic equipment water pressure resistance structure for trapping common fingerlings in the deep sea of the public sea, which comprises a shell, pressure cabins are arranged at the top and the bottom of the shell, and outer sleeves are sleeved at the top and the bottom close to each other in the two pressure cabins. Pistons matched with the pressure bin are arranged at the top bottoms, away from each other, of the two outer sleeves, the inner sides of the two outer sleeves are jointly sleeved with an inner sleeve, and the outer side of the inner sleeve is sleeved with a spring B; through mutual cooperation of the outer sleeve, the piston, the pressure bin, the inner sleeve, the warning lamp, the spring B, the electric contact block A and the electric contact block B, the device can resist water pressure when operating in the deep sea, and when the water pressure pushes the piston to enable the electric contact block B to be in contact with the electric cont