Filter parallel system for rolling mill

The filter parallel system for the rolling mill comprises a plurality of filter boxes and a top cover, the tops of the filter boxes are open, the top cover is arranged, the top cover is provided with a fastening mechanism used for fastening the top cover to the filter boxes, the inner walls of the two ends of each filter box are each provided with a long-strip-shaped limiting strip used for limiting the two ends of a filter located in the corresponding filter box, and the limiting strips are vertically arranged. Two opposite side walls of the filter box are respectively communicated with an auxiliary air inlet pipe and an auxiliary air outlet pipe; and valves are arranged on pipe bodies of the auxiliary air inlet pipe and the auxiliary air outlet pipe. According to the filter parallel system for the rolling mill, the multiple filter boxes are adopted, the filters are arranged in the filter boxes, and the multiple filter boxes are connected in parallel through the main air inlet pipe, the auxiliary air inlet p