Device for extracting trace sulfate in water

The utility model discloses a device for extracting trace sulfate in water. The device comprises a filtering assembly, a waste liquid collecting assembly and a vacuum assembly, the filter assembly comprises at least two main pipelines, a plurality of filter funnels and a plurality of filter element pieces, a plurality of branch pipelines are vertically arranged on the main pipelines in a communicating manner, and a switch valve is arranged on each branch pipeline; the filter element part comprises a shell, an element body and a filter membrane, the bottom of the shell is inserted into the branch pipeline, the top of the shell is fixedly connected with the filter funnel, and the filter membrane is arranged on the element body; one end of the main pipeline is closed, the other end of the main pipeline is communicated with the waste liquid collecting assembly, and the vacuum assembly is communicated with the waste liquid collecting assembly. According to the utility model, the plurality of filter funnels are arr