When the gear pump is operating, the active wheel rotates with the motor and drives the driven wheel to follow. When the meshing teeth on the suction chamber side are gradually separated, the suction chamber volume, the pressure is lowered, and the liquid in the absorbent tube is inserted into the pump; the inhalation liquid is separated from the to the discharge chamber. After the liquid enters the discharge chamber, since the rotten tooth of the two gears is constantly engaged, the liquid is extruded to the discharge tube from the discharge chamber. The active gear and the driven gear continue to rotate, and the pump can continuously inhale and discharge liquid. The pump body is mounted with a safety valve, and when the discharge pressure * When the pressure is prescribed, the liquid automatic * opens the safety valve to return the high pressure liquid to the suction tube.

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