Patent ID: 6659420
Filing Date: 2003-12-09
Classification: F16K,Y10S

Abstract:
A manual and automatic flow control valve comprising a valve body, a manual control unit, a hollow pressure-releasing device, an interfacing plate, an upper casing, and an electric controlled magnetic unit; wherein the valve body is a flow control valve; one side of the valve body is installed with a water inlet chamber which is bent and then extends upwards;the lower side thereof is vertically installed with a water outlet chamber, an upper end of the water outlet chamber vertically protrudes to an upper end of the water inlet chamber; the water inlet chamber and water outlet chambers are communicated above an upper end of the valve body; a hollow main water flow valve is inserted into an upper end of the water outlet chamber, at least one penetrating hole is formed on the film; the film runs across and seals an upper opening of the water outlet chamber for separating the water outlet chamber and water inlet chamber; an upper side thereof is formed with a lower pressure chamber; a manual control unit is installed out of the water outlet chamber of the valve body; a bottom of the electric controlled magnetic unit is installed with a top rod which is controllable electromagnetically; characterized in that: the hollow pressure-releasing device is formed by a valve piece, a hollow push rod, a drain-preventing washer and a conduit; the valve piece is like a disk and the bottom of the valve piece has a post; a through hole is formed at a center of the valve piece and the post; the hollow push rod is installed around a periphery of the post at the bottom of the valve piece and then extends downwards; the drain-preventing washer is a V shape cylinder made of soft rubber material; the conduit is a hollow tube and a bottom thereof has a protruded cap; thereby, the conduit can pass through the bottom of the drain-preventing washer, the drain-preventing washer is embedded in the via hole in the upper end of the valve piece; and the middle plate is a round-piece with a thinner center portion; the lower space thereof is used as the lower pressure chamber; a via hole is vertically formed in a center portion of the upper pressure chamber; a lateral side of the via hole is formed with at least one small hole so that the upper pressure chamber and the lower pressure chamber are communicated with one another; wherein the hollow push rod on a bottom of the hollow pressure-releasing device is inserted into the main water flow valve so that the upper valve piece exactly seals an opening of the main water flow valve; the middle plate covers the film of the main water flow valve; the conduit at the upper end of the hollow pressure-releasing device inserts into the via hole of the middle plate so that the upper pressure chamber is communicated with the hollow push rod and the water outlet chamber by the conduit; and the electric controlled magnetic unit is firmly secured to the middle plate so that the top rod exactly resists against an opening of the via hole.