초록 ▼

Disclosed is a fluid flowing control device of a valve having fluid flowing paths which are made in more sophisticated configuration and by controlling the velocity of the fluid by the maximal use of available volume thereof, to thereby prevent to a maximal extent the generation of cavitation, flash

Disclosed is a fluid flowing control device of a valve having fluid flowing paths which are made in more sophisticated configuration and by controlling the velocity of the fluid by the maximal use of available volume thereof, to thereby prevent to a maximal extent the generation of cavitation, flashing, blocking by foreign materials, and the damage of internal parts. The device includes a cage having an inside cylinder which is closely contacted with a plug, an outside cylinder which forms a plurality of holes in axial and radius directions, respectively, a first internal cylinder which forms a plurality of concave/convex grooves having rectangular sectional elbows with recess in an axial direction, a second internal cylinder which forms a plurality of holes in axial and radial directions, and upper and lower supporting plates for closely coupling the inside and outside cylinders with the first and second internal cylinders on the top and bottom ends thereof; the plug forming a sealing portion and an opening/closing portion which are in contact with a seat, on the leading end of the lower portion thereof, to thereby open/close the seat and control the fluid flow, while being moved in the inside of the cage; and the seat being in internal-contact with the plug.

대표청구항 ▼

1. A fluid flow control device that comprises: (1) a valve body with a fluid inlet and outlet, and a flow path between the inlet and the outlet; (2) a plug movable in the flow path; (3) a flow resister within the flow path cooperating with the plug for reducing the pressure and noise of the fluid

1. A fluid flow control device that comprises: (1) a valve body with a fluid inlet and outlet, and a flow path between the inlet and the outlet; (2) a plug movable in the flow path; (3) a flow resister within the flow path cooperating with the plug for reducing the pressure and noise of the fluid passing through the valve body, wherein the flow resister is defined by a plurality of labyrinthine passages comprising rectangular sectional elbows formed by protrusions in alternating wall members in the flow resister wherein the openings for fluid inlet and outlet are opposed to the protrusions to produce tortuous flow paths for the fluid passing through the resister; and (4) a seat for closing the fluid outlet when the plug is brought into contact with the seat.