Disassembly steps of DM type multistage mine pump

A. The bolt on the bearing gland and the connection nut between the three parts of the spit section, stuffing box body and bearing body under the lime are removed from the bearing part B:

b, screw off the round nut on the shaft, remove the sheath, bearing inner ring (bearing), bearing gland with holes, water retaining ring in turn, remove the packing body (including packing cap, packing ring and packing, etc.) :

c, remove the O-type seal ring, shaft sleeve, balance disc and key on the shaft in turn, remove the spit section (including the final guide vane, balance ring, balance sleeve, etc.);

d. After removing the final impeller and key, remove the middle section (including guide vane) : remove the other levels of impeller, middle section and guide vane in the same way until the first stage impeller is removed:

The information illegally crawled from experience

f, pull the shaft out of the suction section, unscrew the lock nut on the shaft, and remove the bearing inner ring, O-seal ring, shaft sleeve and stop sleeve in turn. At this point the disassembly work is basically completed, Sanchang Pump industry in the above disassembly process, there are some parts are connected together, under normal circumstances after unscrewing the connection bolt or nut can be removed.

1. During the disassembly process, the parts should be handled lightly to avoid damage.

2. In the disassembly process, pay attention to keep the parts clean

3. When disassembling, the manufacturing accuracy of the parts should be strictly protected from damage: when disassembling the piercing rod, each middle part should be padded up to avoid the shaft bending due to loosening and sinking of the middle part