This invention relates to the field of
throttle valve technology and discloses an ultra-
high pressure zero-leakage
throttle valve based on pressure rating. The valve includes a main body shell, with a sealing tube mounted on the top outer wall of the main body shell. A rotating
handle is located at the top of the sealing tube. Two sets of semi-circular sealing plates are rotatably connected to one end of a limiting ring via U-shaped plates. The other end of the limiting ring is slidably connected to a support rail. When the two sets of semi-circular sealing plates move, the guiding effect of the support rail and the limiting ring causes their opposite ends to simultaneously converge towards the center end of the support rail. Simultaneously, the pressure of the flowing liquid applies pressure to the center end of the support rail, thereby reducing the
liquid pressure on the rotating shaft driven by the rotating
handle, which in turn drives the lead screw. This reduces the force required to open the device, facilitating easier device operation.