Although the valve can be used to adjust the control, but a waste of energy. Effect of pump sealing performance. Is to ensure that the process flow to meet the premise of the premise, as far as possible to choose the low speed of the pump. At high speed. The material's wear and speed, plus the square of the square is proportional to. The high speed of the pump and the pump shaft of the machining accuracy, material quality, assembly quality, bearing and sealing reliability of the more stringent requirements. To the factory white water tank 2 white water pump as an example of the high speed of 181000160 sets for the low speed of 1812510015 for low speed Chen; high speed pump, the shaft diameter is small. Rigidity difference.

Average repair cycle is only 4 months; and low speed chestnut. Large shaft diameter, good rigidity. Average repair cycle is 2 years. The selection of chestnut is a very important part of improving the reliability of chestnut.

2 the installation of the pump is suitable for the selection of the pump, but it can not reach the technical requirements. It is also difficult to improve the reliability of its operation, so the installation should pay attention to the school board. Before installation to strict inspection plate based quality foundation board whether deformation damage and crack practice and anchor bolt hole size is appropriate. In the grouting cement based Colonel base plate should be used in precision of 0.05 and 1 cabinet level instrument, iron pad to be elected good focal point is best placed in the vicinity of the screw. The first grouting can be carried out after school adjustment. After foundation. Have time check and tighten the screw anchor. Secondly to pump body level, with a precision of, 5, 1 cabinet level gauge in the front end and the rear end of the pump shaft neck measurement sheet is adjusted to a level between the pump body support legs and base. The level of chestnut. 14 differential =0.3 claw 1

The axis of the shaft and the motor shaft of the school are the concentric degree of the spring and the motor shaft. The coupling of the school should be carried out in two directions, up and down. And between the two coupling to leave a proper gap. To ensure that the axial movement of the defined process operation of two axis, and some manufacturers, in pump design to is easy to fix to repair the pump when not moving motor, between the pump and motor coupling increased 1 intermediate coupling. This to school pump shaft and the motor shaft concentricity take Sishui the Dingzhun degree because of the coupling in the process there is a concentricity error. This device also gives the coupling of the dynamic balance. The pump shaft and the motor shaft of the rigidity are higher requirements. If conditions permit. Can carry on the transformation to cancel the intermediate coupling, will move to the end of the pump motor re drilling and tapping correction. The factory has transformed many of the 18 types of water pump with intermediate coupling, the effect is very good, so that the operation reliability of chestnut has been greatly improved.

3 the maintenance of the pump maintenance of the maintenance of the running reliability of the mention of the time can be ignored. 5 maintenance is many aspects.

Improve the sealing of the pump shaft to improve the sealing of the shaft sealing can effectively prevent the outside air into the body and prevent the leakage of high pressure liquid inside the chestnut. Chestnut shaft seal with mechanical seal and packing seal. The packing seal is more common, is on the outer cylindrical surface of the elastic filler and pump sleeve contact to achieve the sealing. The seal ring is also equipped with the stuffing box seal ring hole Kaiyou week. The groove to alignment seal the diversion pipe and in the liquid sealing effect under the action of negative pressure filler and lubricating pump bushing and the cooling packing. For different liquid medium to reasonable choice of filler.

Gland packing to adjust and keep proper leeway, like control the leakage was 510 drops per minute is appropriate mechanical sealing liquid leakage small. Low power consumption, compact structure, but the cost is high, repair and replacement parts is not convenient; the pump shaft sleeve is more stringent. And repair replacement of low success rate. Such as the factory float liquid circulation, 10023 replacement of mechanical seals the success rate of only, mechanical seal, like, in the transmission of temperature pressure corrosive liquid pump; ordinary pump does not use.