OUTLET PRESSURE CONTROL SYSTEM FOR ELECTROMAGNETIC RECIPROCATING PUMP

摘要

An electromagnetic reciprocating pump comprises a pressure sensor for detecting the actual outlet pressure of the electromagnetic reciprocating pump, and the strokes of the electromagnetic drive means and the compressor piston connected to the electromagnetic drive means varies are feedback controlled by the deviation from the present outlet pressure of the actual outlet pressure detected by the pressure sensor. The stroke of the electromagnetic drive means is controlled by adjusting the average magnitude of the half-wave AC current supplied to the electromagnetic drive means.