Negative pressure oil retainer ring for rotary oil seal

The utility model discloses a negative pressure oil retainer ring for a rotary oil seal, and particularly relates to the field of oil seals, the negative pressure oil retainer ring comprises a rotary oil seal body, the middle position of the rotary oil seal body is provided with a central hole for a rotary shaft to pass through, the inner side wall of the central hole is provided with an annular cavity, and the annular cavity is internally provided with an oil retainer ring. The end part of the oil deflector ring is obliquely arranged, and the inclination angle of the end part of the oil deflector ring is 10-60 degrees. The oil retainer is changed into the inclined plane structure, oil liquid can centrifugally flow along the inclined plane direction during operation, siphon effect is formed on the oil liquid at the oil seal, pressure of lubricating oil on the oil seal is reduced, risks of oil leakage and oil leakage of the oil seal are greatly reduced, and the service life of the oil seal is prolonged. The hi