Water body heavy metal ion adsorption device based on negative pressure capillary principles

The utility model provides a water body heavy metal ion adsorption device based on negative pressure capillary principles, belongs to auxiliary aquatic seedling raising equipment, and particularly relates to an aquaculture water body heavy metal ion adsorption device. The water body heavy metal ion adsorption device comprises a rectifying casing with a hollow inner chamber, wherein a plurality of pipelines are arranged in the rectifying casing; holes with diameters smaller than or equal to 2 mm are formed in the side wall of each pipeline, the inside diameter of the pipeline is smaller than or equal to 1 mm, a spiral exchange group capable of adsorbing heavy metal ions is arranged on the outer side of the pipeline, and the top end of the pipeline is connected with a transversely arranged air pipe through a rotating shaft; the air pipe takes the pipelines as rotating shafts and rotates; and water outlets are formed in the bottom of the rectifying casing. According to the device, the air pipe is arranged at the top ends of the capillary pipelines, so that fry survival and water body adsorption are better facilitated on the basis of the negative pressure capillary principles, and the heavy metal ion adsorption efficiency is increased; and simultaneously, the air pipe can take the pipelines as the shafts to rotate, so that the heavy metal ion adsorption device has a wind direction determining function.