Control valve mechanism and oral irrigator handle capable of controlling blocking or communicating of waterflow

A control valve mechanism capable of controlling blocking or communicating of waterflow, comprising:

• a valve seat provided therein with at least a water intaking chamber and a control chamber, the water intaking chamber being in communication with the control chamber through a communicating passage, and the control chamber being provided with a mounting port;
• a control valve spool provided in the control chamber through the mounting port and provided with a force-applying part which is under control of the control valve spool to apply force towards the water intaking chamber;
• and
• a blocking seal comprising a blocking seal body and an elastic restoring member, the blocking seal body being provided in the water intaking chamber, restorably blocking the communicating passage by the elastic restoring member, being provided with a force-bearing part that is subjected to force from the force-applying part through the communicating passage, and being moved to open the communicating passage after the force-bearing part is subjected to force from the force-applying part.