Unpowered iron remover of pneumatic conveying pipeline

The utility model relates to the field of pneumatic conveying pipelines, and discloses an unpowered de-ironing separator for a pneumatic conveying pipeline, which comprises two de-ironing separator shells connected together, the upper end and the lower end of each de-ironing separator shell are respectively provided with a connecting assembly connected with the pipeline, and the interior of each de-ironing separator shell is of a hollow structure. A plurality of groups of magnetic bars are arranged in the de-ironing device shell at equal intervals, side bulges are fixedly mounted on two sides of the de-ironing device shell, the side bulges are strip-shaped, threaded holes are formed in the side bulges, bolts are arranged in the threaded holes, and magnetic force is generated through the internal magnetic bars; when magnetic impurities pass through, the magnetic impurities can be intercepted on the inner wall of the pipeline, and when the conveying process is paused or finished, the internal impurities can be