Radioactive solution solid-liquid separation sampling device

The invention relates to a radioactive solution solid-liquid separation sampling device which comprises an outer frame, an upper fixing plate and a lower fixing plate are arranged in the outer frame, the upper fixing plate is used for fixing a collecting pipe, the lower fixing plate is used for fixing a stock solution pipe, and a filter fixing plate is arranged between the upper fixing plate and the lower fixing plate. The filter fixing plate is used for fixing a plurality of filters, the upper end of each filter is connected with a liquid guide pipe, the lower end of each filter is connected with a suction needle, the suction needles can move downwards along with the filter fixing plate to extend into the stock solution pipe for sampling, and a sealing cover fixing plate is arranged on the upper side of the collecting pipe mounting groove and used for fixing a sealing cover of the collecting pipe. The sealing cover is provided with two outlets, one outlet is connected with a liquid guide pipe, the other outl