Tool for quickly disassembling and assembling plunger pump oil seal

The invention relates to a tool for quickly disassembling and assembling an oil seal of a plunger pump, which comprises a hollow cylinder matched with the diameter of a piston of the plunger pump, the hollow cylinder sequentially comprises a disassembling part, a middle part and an assembling part from left to right, and the outer diameter of the disassembling part and the outer diameter of the assembling part are both smaller than the outer diameter of the middle part; end threads used for disassembling the oil seal are arranged on the peripheral face of the disassembling part, a plurality of cutting parts are evenly arranged on the two lowermost circles of end threads, and the outer diameter of the cutting parts is smaller than that of the disassembling part. And the cutting parts on the lowermost circle and the cutting parts on the second circle are arranged in a staggered manner. According to the technical scheme, the staggered cutting parts are arranged on the lowermost two circles of threads of the end