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针对在用抽油机减速器普遍存在的渗漏油问题， 提出了一种新型减速器轴头密封结构。这种密封结构是将机械密封运用到轴头密封上， 在轴承端盖内部安装由动静环、Ｏ 形橡胶圈及弹簧等组成的机械动密封装置， 动密封件选用具有一定硬度和耐磨性的材料制成。现场试验表明，密封结构性能可靠， 使用寿命长， 对轴头无磨损， 功率损耗小， 从根本上杜绝了抽油机减速器轴头的渗漏油现象。
Aiming at the problem of leakage oil which is ubiquitous with the reducer of pumping unit, a new type of reducer shaft sealing structure is proposed. The sealing structure is a mechanical seal applied to the shaft seal, the bearing cap installed inside the static and dynamic ring, O-ring and spring and other mechanical seal assembly, the dynamic seal selection has a certain hardness and wear resistance Made of material. Field tests show that the seal structure reliable performance, long service life, no wear on the shaft, power loss is small, fundamentally put an end to oil pumping shaft reducer oil phenomenon.