Filtering device for heat supply pipeline

The invention relates to the technical field of pipeline filtration, particularly to a filtering device for a heat supply pipeline. The filtering device comprises a metal shell which is manufactured by adopting an integral forming process; the metal shell is divided into an upper shell and a lower shell; an included angle is formed between the lower shell and the upper shell; a cylindrical filterscreen is arranged in the lower shell; one part of the cylindrical filter screen extends upwards into the upper shell; the upper part of the cylindrical filter screen is fixed in the upper shell through a fixing piece; the end, away from the upper shell, of the lower shell is connected with the inlet end of a valve through a flange; the flange on the lower shell is set to be a first flange; a flange at the inlet end of the valve is set to be a second flange,; and the first flange and the second flange are fixed through bolts. The filtering device of the invention is simple in structure and good in filtering effect; an