Opposed plunger pump

The utility model relates to the technical field of plunger pumps, and discloses an opposed plunger pump which comprises a shell, and a driving cavity, a piston cavity and a water pumping cavity are formed in the shell. The crankshaft is arranged in the driving cavity, a plunger is arranged in the piston cavity, and a connecting rod is connected between the plunger and the crankshaft; when the crankshaft rotates, the positions of the multiple piston rods can be moved upwards in a reciprocating mode through the moving part, the piston rods can extract lubricating liquid in the piston cavities when moving upwards, the piston rods can release the lubricating liquid in the box body into the piston cavities when moving downwards, and the lubricating liquid can pass through the filter screen in the lubricating liquid extracting and releasing process; the filter screen is used for filtering impurities entrained in the lubricating liquid, so that the purpose of cleaning metal scraps adsorbed in the lubricating oil ca