DIRT TRAP FILTER Russian patent published in 1997 - IPC

FIELD: cleaning devices. SUBSTANCE: filter includes chamber with filter element made in form of perforated tube with detachable filtering screen. Chamber is provided with gate valve whose passage area is equal to diameter of screen. Filtering screen is metal. Diameter of perforations of tube is lesser than diameter of screen mesh. One end of filter element is located in outlet branch pipe and other end is provided with end perforated plate and is connected with chamber by means of brackets and trust bolts. Filter is provided with dirt trap chute located in lower portion of chamber and rigidly connected with filter element. Dirt trap chute is mounted on roller supports for extension of filter element through end gate valve over guides. EFFECT: enhanced efficiency. 4 dwg