Piston pump cylinder sleeve structure convenient to disassemble and assemble

The utility model discloses a piston pump cylinder sleeve structure convenient to disassemble and assemble, which comprises a cylinder body, a metal ring is arranged in the cylinder body, a cylinder sleeve is arranged on one side of the metal ring, a locking nut is in threaded connection with the interior of the cylinder body and located on one side of the cylinder sleeve, a piston is arranged in the cylinder sleeve, a piston rod is arranged on the outer side of the piston, and a piston rod is arranged on the outer side of the piston rod. A hexagonal slotted nut is arranged on one side of the piston, the piston rod is in threaded connection with the hexagonal slotted nut, and a cotter pin is inserted into the outer side of the piston rod in a penetrating mode. The cylinder sleeve has the beneficial effects that the cylinder body, the metal ring, the first O-shaped ring and the locking nut are arranged, so that the cylinder sleeve can be quickly mounted and dismounted, the cylinder sleeve does not need to be s