KNIFE GATE VALVE WITH CLEANING DEVICE OF VALVE BODY AND THE LIKE

摘要

PURPOSE:To clean a vlave body, etc. at any time, make the opening/closing smooth and complete, and prevent the corrosion of the valve body, etc. by providing an annular groove at the center of an outer periphery and boring many injecion holes communicating to the annular groove and facing the valve body direction on the rear surface. CONSTITUTION:After the transportation of a trnasported material is stopped at any time and the inside of a valve port 6 is emptied, a valve body 2 is closed, and air is injected through the injection hole 15 of a washing ring 11 when powder grains attached to the valve body 2, etc. are dry, and water is injected when they include a liquid, thereby they are washed away and discharged through a discharge port 18, thus the valve body 2, etc. can be cleaned.