TWD201098S - Valve element for flow control valve - Google Patents

Abstract

[Use of article] This article is a valve body for a fluid control valve. It is installed inside the fluid control valve to control the flow of pressure fluid inside the fluid control valve. The fluid control valve is used to control, for example, a dust collection device. The filter is used when a pressurized fluid such as compressed air is blown to knock off the dust attached to the filter. ; During use, when the pressure fluid on the upper end surface side of the cylindrical portion is discharged from the exhaust port of the fluid control valve by a predetermined operation, as shown in the reference cross-sectional view showing an installation example of the fluid control valve, This item will move upward, and the fluid control valve will become open. The pressure fluid introduced into the supply port is guided to the surface of the conical portion and is smoothly sent out from the output port. When the discharge of the pressure fluid from the upper end surface side of the cylindrical part is stopped by a predetermined operation, the article will gradually move downward, and the fluid control valve will become closed. At this time, the pressure fluid flowing from the supply port to the output port is guided by the surface of the conical portion, and the flow rate is reduced while maintaining a smooth flow. This allows the article to be returned to the valve seat of the fluid control valve while maintaining a stable posture, thereby preventing a large force from being applied locally to the article. ;[Design description];The valve system for a fluid control valve of this design article has: a cylindrical part with a substantially fixed outer diameter; a conical part protruding downward from the lower end of the cylindrical part in a coaxial manner with the cylindrical part; a diaphragm part, The thin-walled disc-shaped plate has a predetermined elasticity and extends radially outward from the outer circumference of the upper end of the cylindrical part; and the buckle part is thin and trapezoidal and extends downward from the outer circumferential edge of the diaphragm part. ; The cylindrical part has a plurality of hollowed out parts and a pair of guide passages. As shown in the A-A cross-sectional view, one end of the guide passage forms an opening on the outer peripheral surface of the cylindrical part, and the other end forms an opening on the upper end surface, so that the pressure fluid introduced from the side of the cylindrical part is guided toward the upper end surface of the cylindrical part. . The pressure fluid surrounding the upper end surface of the cylindrical portion will push the article downward to reliably seal between the lower end of the cylindrical portion of the article and the valve seat of the fluid pressure control valve. ;The design key point of this creation lies in the overall shape of the "valve body for fluid control valve".