NOISE REDUCING DEVICE FOR A CONTROL VALVE CAPABLE OF REDUCING NOISE CAUSED WHILE FLUID PASSES THROUGH THE CONTROL VALVE

摘要

PURPOSE: A noise reducing device for a control valve is provided to reduce noise caused while fluid passes through the control valve and to achieve the required amount of the passing fluid.;CONSTITUTION: A noise reducing device for a control valve comprises a first disc(10), a second disc(20), a first blocking plate(30), and a second blocking plate. The first disc has a plug passing groove at the center and radially forms first passage forming parts on which first grooves and first blocking portions are alternatively formed. The second disc: has a plug passing groove at the center; is contacted to the underside of the first disc; and radially forms second passage forming parts on which second grooves and second blocking portions are alternatively formed. The first blocking plate forms the plug passing groove at the center and is formed above the first disc to close the upper part of the first passage forming parts. The second blocking plate is positioned under the second disc to close the lower part of the second passage forming parts. The first and second discs are formed in between first and second protective caps in order.;COPYRIGHT KIPO 2013