我公司目前有斜置式混凝土输送泵7台,在使用过程中经常遇到滑阀过早损坏的问题。主要表现为:损伤部位多为滑阀阀杆,阀杆上有深度不一、且不规则的轴向凹槽,阀杆运动阻力大,上、下不能达到要求的位置,严重时阀杆受卡不能运动。此时必须停机检修,甚至要更换阀杆或滑阀总成,既不经济又直接影响混凝土的泵送。解体滑阀后一般表现为:尼龙密封条严重破损,破损处夹有砂子、小混凝土块,甚至有小石子,润滑脂供给管顶端有堵塞现象。 Our company currently has 7 sets of inclined concrete pump, which often encounters the problem of premature damage to the slide valve during use. Mainly manifested as: most of the damaged parts of the spool valve stem, the stem has a different depth and irregular axial groove, the valve stem movement resistance, up and down can not reach the required position, severe stem when Card can not exercise. At this point, maintenance must be stopped and even the valve stem or slide valve assembly replaced. This is neither economical nor directly affecting the concrete pumping. After disassembling the slide valve, the general performance is as follows: The nylon seal is severely damaged, sand, small concrete blocks, and even small stones are present at the damage, and the top of the grease supply pipe is blocked.