Two-port valve
AssigneeSMC Corporation
InventorsTetsuro Tokuda, Hiroaki Suzuki
Life of this patent
Estimating the term…
Abstract
An input port 2 and an output port 3 opening in orientations at 90° from each other are connected by a flow path 4, a valve seat 7 formed around an input-side connecting hole 5 can be opened and closed from inside the flow path 4 by a valve body 8 provided to a tip end of a valve shaft 9 for moving forward and rearward by operation of fluid pressure, the valve body 8 moves across a front of an output-side connecting hole 6 in opening and closing of the valve seat 7, a diameter of the valve shaft 9 is formed to be equal to or slightly larger than that of the valve body 8, and a stroke of the valve body 8 for opening and closing the valve seat 7 is set at an amount required to fully open the output-side connecting hole 6.
Claims8
A two-port valve comprising:
- a casing having an input port in a tip end face of said casing and an output port in a side face of said casing at substantially 90° from each other;
- a flow path connecting said input and output ports;
- an input-side connecting hole connecting said input port to said flow path;
- an output-side connecting hole connecting said output port to said flow path;
- an annular valve seat formed around said input-side connecting hole;
- a valve body configured to open and close said annular valve seat from an inside of said flow path and having a valve sealing portion at a tip end face of the valve body;
- and
- a valve shaft connected to said valve body and configured to move forward and rearward in a substantially sealed state in said casing such that said valve body is moved across said output-side connecting hole in opening and closing of said annular valve seat with said valve body;
- wherein said valve shaft has a diameter equal to a diameter of said valve body, and said valve body opens and closes said valve seat with a stroke which is substantially equal to a diameter of the output-side connecting hole such that said valve sealing portion moves out of said flow path when said output-side connecting hole is fully opened to said flow path, and
- wherein the annular valve seat and the output-side connecting hole are positioned substantially orthogonal and adjacent to each other.
Dependencies are inferred from the claim text.