The utility model relates to a mechanical sealing device for pumps, which belongs to the technical field of sealing. The existing mechanical seal device has the defects that the spring is vulnerable to corrosion damage or the sealing piece is easy to wear. The utility model comprises a static seal ring, seal seat, seal, seal nut and a spring, a sealing seat is fixedly mounted on the pump body, static seal ring is arranged on the sealing seat, the sealing nut is sheathed on the pump shaft, seal ring is arranged in the sealing nut cavity, static seal ring and seal sealing surface ring tightly, the sealing nut cavity bottom and the sealing ring face is arranged between the spring and the spring is propped and seal surface forming elastic sealing ring and dynamic compensation, static seal ring and the pump shaft is provided with a lubricating oil passage, pump body is provided with a lubricating oil cavity oil passage. Mechanical seal device with internal cavity oil lubrication system. The utility model effectively avoids the corrosion of the spring and reduces the abrasion of the sealing surface.
【技术实现步骤摘要】
【技术保护点】
泵机械密封装置，包括密封静环（９）、密封座（２）、密封动环（４）、密封螺母（３）和弹簧（６），密封座（２）固定安装在泵体（１）上，密封静环（９）设置在密封座（２）内，密封螺母（３）固定套装在泵轴（５）上，密封动环（４）设置在密封螺母（３）的内腔，密封静环（９）与密封动环（４）的密封面紧密吻合，密封螺母（３）的内腔底面与密封动环（４）的端面之间安装有弹簧（６），该弹簧（６）顶撑于密封动环（４）的端面形成补偿弹力，其特征是：所述的密封动环（４）和所述的密封静环（９）与泵轴间设置有润滑油通道（７），所述的泵体（１）内设置有与所述的润滑油通道（７）贯通的油腔（８），机械密封装置内部与油腔（８）构成润滑系统。
【技术特征摘要】
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。