以前,往复油缸的密封多采用旋转轴的防尘圈,这是不尽合理的。因为适用于旋转装置中的防尘圈,移用在往复装置中,就要受到沿轴线方向运动的尘粒的冲刷而侵入防尘圈的唇口中,进而侵入密封圈的唇口,造成抬起密封圈唇口,划伤唇口,破坏唇口的密封性能,容易引起漏油。为此,必须采用强化和改进防尘措施: ①防尘装置要有挡尘和刮尘作用,还应具有吸附和 Previously, the reciprocating cylinder seal to use more dust on the rotating shaft, which is not reasonable. Because it is suitable for the rotating device in the dust ring, moved in the reciprocating device, it will be subject to the axial direction of the erosion of dust particles intrusion into the lip of the dust ring, and then invaded the lip lip, causing the lift Seal lip, scratch the lip, the destruction of lip sealing performance, easily lead to oil spills. To this end, we must adopt measures to strengthen and improve dust control: ① dust-proof device to dust and dust-scraping effect, but also with adsorption and