Importance

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Abstract

A jetting valve with two stage calibrating structures is disclosed, the jetting valve includes: a casing having an accommodating space; a piezoelectric actuating unit disposed on one side of the accommodating space; a spraying unit disposed on the other side of the accommodating space; a displacement amplifying element is arranged at the bottom of the accommodating space and leans against on the spraying unit, the bottom end of the piezoelectric driving unit is in contact with the displacement amplifying element; a sensing unit is arranged on the periphery of the displacement amplifying element to sense the movement of the spraying unit; a control unit, connected to the sensing unit and the piezoelectric actuating unit, adjusting the voltage supplied to the piezoelectric driving unit according to data obtained by the sensing unit; and a liquid supply unit connected to the spraying unit. In accordance with the present invention, a dispenser may be corrected its starting position for dispensing by large-range and small-range correction, and achieve the effect of rapid and accurate spraying calibration.

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First Claim