Dual mode flush actuator

摘要

A flush actuator for engaging a flush valve. The flush actuator provides a mechanism assembly for automatically flushing the flush valve. A sensor provides a presence detection to trigger the automatic flushing. A reduced flush or standard flush cycle may be initiated.

主权项

1. A flush valve assembly comprising;
a valve body having a diaphragm valve disposed therein with a stem extended there from; an actuator assembly coupled to the valve body; a bushing at least partially disposed within the valve body between the actuator assembly and stem; a plunger slidably and tiltably disposed within the bushing, the plunger having a plunger head at an outer end and a shank extending there from to an inner end for engaging the stem, the plunger being axially slidable through a passage in the bushing; and the actuator assembly comprising:
an actuator assembly housing coupled to the valve body, the actuator assembly housing having a plunger passage there through for slidably and tiltably receiving the plunger and the plunger head being disposed within the actuator assembly housing;a sensor unit disposed within the actuator assembly housing and positioned for presence detection through a sensor aperture; anda roller system disposed within the actuator assembly housing adjacent the plunger, the roller system engageable with the plunger head; wherein rotation of the roller system in a first direction moves the plunger along a first plunger travel path to strike the stem at a first vertical point to effectuate a solid waste flush volume and rotation of the roller system in a second direction moves the plunger along a second plunger travel path to strike the stem at a second vertical point to effectuate a liquid waste flush volume.