Plunger sealing mechanism for reciprocating pump

The utility model discloses a plunger sealing mechanism for a reciprocating pump. The plunger sealing mechanism for the reciprocating pump is characterized by comprising a spring, guide sleeves, sealing rings, stuffing rings and isolating rings, wherein the spring is mounted at the bottom of a stuffing box; the guide sleeves and the sealing rings are mounted on the spring; the stuffing rings are mounted between the two guide sleeves and the sealing rings; one isolating ring is mounted between every two adjacent stuffing rings. The plunger sealing mechanism for the reciprocating pump has the advantages that along with the abrasion of stuffing, the thickness of the stuffing is reduced, the spring is lengthened, and the sealing effect on the stuffing is automatically compensated without manual intervention. The principle structure is simple, and the plunger sealing mechanism for the reciprocating pump is convenient to manufacture and mount. The sealing effect can be enhanced, and the service life is prolonged.