A plunger pump is a reciprocating pump, a type of positive displacement pump. It uses an eccentric wheel and crosshead slider mechanism to rotate the motor, causing the plunger to reciprocate.
When the plunger is pulled back, the volume of the sealed chamber formed by the inlet check valve, outlet check valve, and plunger increases, the pressure decreases, the outlet valve closes, the inlet valve opens, and liquid enters the chamber.
The pressure in the sealed chamber formed by the valve and plunger decreases, the pressure in the working chamber increases, the inlet valve closes, and when the inlet valve is closed, the outlet valve opens, liquid is discharged, and the liquid continuously exits from the plunger through the inlet pipe and into the outlet pipe.
