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我公司在学习湖北沙市自来水公司离心泵不用填料的改进装置基础上,于1983年初对20SH-9a14SH-9b、12SH-9型水泵改装了八台,经四个多月运转,情况良好,来参观兄弟单位认为有推广价值,现介绍如下: 将离心泵原有填料(也称盘根)和挤紧填料的轧兰水封圈全部拆下,另行加工一只铸铁套筒A,紧配在新轴套上(旧的不能用),位置参见附图。在该铸铁套筒外侧对准泵壳压力冷却水管中心位置,车削一圈凹形导流槽B,套筒与轴套为紧配加工,套筒外径与泵壳相距50～60丝,以转动时两者有缝隙而不摩擦为准,套筒内端面与原轴封套相距10～20毫米,套筒外端面则要与原有泵壳外侧面差0.3～0.5毫米。另在泵壳端边平面处,紧填两层各
Based on the improvement of the centrifugal pump without filler used in Hubei Shashi Water Company, the company modified eight 20SH-9a14SH-9b and 12SH-9 pumps at the beginning of 1983. After four months of operation, the company is in good condition. The fraternal unit believes that there is promotion value. Now it is introduced as follows: Remove all the fillers (also known as packing) of the centrifugal pump and the crushing fillers, and process a cast iron sleeve A separately. On the sleeve (the old can not be used), see the figure in the position. The outside of the cast iron sleeve is aligned with the center position of the pump casing pressure cooling water pipe, and a concave concave diversion groove B is turned, the sleeve and the sleeve are tightly processed, and the outer diameter of the sleeve is 50 to 60 wires from the pump casing. When there is a gap between the two without friction, the inner end face of the sleeve is 10-20 mm away from the original shaft cover, and the outer end face of the sleeve must be 0.3-0.5 mm different from the outer face of the original pump housing. In the other end of the pump shell, fill two layers