Proportional flow control valve
AssigneeMAC Valves, Inc.
InventorsDavid M. Sobka, Jr., Jeffrey Simmonds
Life of this patent
Estimating the term…
Abstract
A valve apparatus that includes a valve assembly including a valve retainer body that houses a movable poppet that defines a valve member that is configured to contact a conically shaped valve seat of the valve retainer body; and a motor assembly including a rotatable shaft that is configured to actuate the valve assembly; wherein the rotatable shaft includes a thread formed at an end thereof, the thread being engaged with a sleeve that through rotation of the thread by the rotatable shaft will translate the sleeve towards and away from the movable poppet to transfer an axial force to the poppet that forces the valve member into engagement and disengagement with the valve seat to open and close the valve assembly.
Claims16
A valve apparatus, comprising:
- a valve assembly including a valve retainer body that houses a movable poppet that defines a valve member that is configured to contact a valve seat of the valve retainer body;
- and
- a motor assembly including a rotatable shaft that is configured to actuate the valve assembly;
- wherein the rotatable shaft includes a thread formed at an end thereof, the thread of the rotating shaft being engaged with a corresponding threaded surface of an axially translatable sleeve including a cylindrical extension that through rotation of the thread by the rotatable shaft will axially translate the sleeve towards and away from the movable poppet to transfer an axial force to the poppet that forces the valve member into engagement and disengagement with the valve seat to open and close the valve assembly, and
- wherein a cylindrical spacer surrounds the rotatable shaft at an end of the rotatable shaft that does not include the thread, the cylindrical spacer being located between the thread and the motor assembly and having an axial length that is configured to limit axial movement of the rotatable shaft.
A valve apparatus, comprising:
- a valve retainer body defining a valve seat;
- a movable poppet that defines a valve member that is configured to contact the valve seat of the valve retainer body;
- a rotatable shaft that is configured to actuate the movable poppet;
- a thread formed at an end of the rotatable shaft;
- a sealing diaphragm between the movable poppet and the thread;
- a sleeve including an internally threaded surface that is engaged with the thread, and including a cylindrical extension;
- and
- a cylindrical spacer surrounding the rotatable shaft at an end of the rotatable shaft that does not include the thread and positioned between cylindrical extension and the rotatable shaft,
- wherein rotation of the thread by the rotatable shaft translates the sleeve towards and away from the movable poppet to transfer an axial force to the poppet that forces the valve member into engagement and disengagement with the valve seat to open and close the valve apparatus.
Dependencies are inferred from the claim text.