I have various types of mines under the mine 22 sets of multi-purpose centrifugal pump, shouldering the discharge of underground sewage, since the end of 1996, I mine all-tail filling process, the serious underground water quality turbidity, sediment greatly increased, resulting in drainage Frequent wear and tear parts of the pump balance, the use of greatly reduced cycle, stainless steel from one week to three classes, cast iron pieces from 3 days to a class. To this end, after nearly two months of trial and error, we carried out the following transformation, with 200DH43 × 8 pump as an example. 1. Balancing rings 2. Balancing discs 3. Balancing discs 4. Balancing sleeves 5. Balancing rings 6. Shim rings 7. Bushing 8. Balancing disc bushing components 9. Balance bushing Turning parts (1) Balance plate and the liner ring of the joint pieces separated by using countersunk bolt assembly and fixed. (2) adjust the assembly of a good set of balanced stall vehicle short 2.5 ± 0.1mm. (3) Turn the counterbalance disc in the direction of the shaft end of the shaft 3 ± 0.5mm Balance disc surface 6 ± 0.1mm. (4) Machined a wide 5.5 ± 0.1mm gasket ring. (5) to expand the balance sleeve diameter 0.3-0.4mm. (6) Installation sequence After the balance sleeve and balance ring are installed, when installing the new balance ring and balance, the backup ring must be placed between the balance sleeve and the balance disk (see Figure 1). If the balance part Wear in place, simply put the replacement ring in the balance between the disc and sleeve B, you can re-use a balance Ji ring and balance ring. The practice of more than one year has proved that the above-mentioned improved method is simple and easy, low cost and wide adaptability. The service life of the new stainless steel balance ring and the balance plate lining ring has been extended to three days and the cast iron parts have been extended to five classes A pair of dual-use, service life and doubled, for a large number of old balance ring, balance disc liner can be recycled once, save a lot of money and manpower mine.
