Environment-friendly acid-saving strip steel pickling line

The utility model relates to an environment-friendly acid-saving strip steel pickling line. Gas curtains deflected inwards from a nozzle are arranged at a feeding end, corresponding to the upper surface and the lower surface of a strip steel respectively for sealing acid mist in a tank, baffle plate type demisting plates and filter type demisting nets are alternatively arranged under a plurality of acid tank covers, an environment-friendly hood is arranged, a residual acid gas-sweeping assembly is arranged in the environment-friendly hood, a bend roller assembly is arranged, a bearing block of a bend roller is arranged in an air pocket, air is introduced into the air pocket to protect a bearing, the rear section of the environment-friendly hood is immersed in a water tank for cleaning by the strip steel, the liquid level of the water tank and an upper plate and two side plates of an overflowing water seal assembly form a single space, a water curtain formed from top to bottom in the space can be mixed and tou