Plunger pump with anti-leakage structure

The invention discloses a plunger pump with an anti-leakage structure. The plunger pump with the anti-leakage structure comprises a bracket, a sealing seat, a cavity, a driving mechanism, a plunger assembly, a sealing cavity, a water inlet pipe, a water pumping pipe, two sealing cavities, a first sealing ring, a liquid drainage pipe, a stop ring, a sealing sleeve and a second sealing ring. According to the plunger pump with the anti-leakage structure, the plunger assembly is pulled to move reciprocally in the sealing cavities through the driving mechanism so that liquid enters the sealing cavities from the water inlet pipe, and then the liquid is pumped out through the water pumping pipe; when the liquid is pumped, when the sealing sleeve leaks because of wearing, the liquid can leak into the second sealing cavity and is drained through the liquid drainage pipe, so that the liquid is prevented from corroding the driving mechanism; the effect of protecting the driving mechanism is achieved; moreover, whether t