Horizontal multi-stage pump parts maintenance matters needing attention

In our everyday use horizontal multistage pump, to the problem of horizontal multistage pump parts often do not pay attention to very much, also don't know how to maintenance and maintenance, only at ordinary times the horizontal multistage pump regularly to do daily maintenance and maintenance, horizontal multistage pump's service life is longer, we use to safer, below small make up to introduce horizontal multistage pump parts maintenance and maintenance of the matters needing attention.

a, horizontal multistage pump parts maintenance

1, 0 the diameter of the pump shaft bending more than the original. 05% when, should be corrected. shaft and shaft sleeve not concentricity between should not exceed 0. 5 mm, more than to replace collar. Water pump shaft corrosion or wear more than 2% of the original diameter, should replace the new shaft.

2, collar has rules of wear more than 3% of the original diameter, irregular wear the original diameter of more than 2%, must be replaced. At the same time, check the shaft and shaft sleeve of the contact surface with and without water seepage, shaft sleeve between the impeller and paper pad is complete, not requirements shall be modified or replaced.

3, impeller and blade if there is crack, damage and corrosion, and so on and so forth, light person can use the repair, such as epoxy resin, responding to replace the new impeller. Impeller and shaft connection parts of the loose and permeable, if any, should be revised or change the join keys, the impeller is installed on the water pump shaft after shaking value must not exceed 0. 05mm。

4, check the sealing ring crack and wear and tear, the impeller of the radial clearance should not exceed the prescribed maximum allowable values, more than should be replaced. When replace the sealing ring, the water inlet of impeller outer diameter should be turning, the principle is to see the light can be turning when should pay attention to and axis concentric. Then put the seal ring diameter according to the size of fit clearance value well, sealing ring and the axial clearance between the impeller with between 3 ~ 5 mm advisable.

5, ball bearing and the bearing cover should be clean, such as bearing a little corrosion, crack, or clearance, to timely replacement. When changing bearing level shall not be lower than the original bearing level, be sure to use formal bearing factory products. Replace the plug gauge measuring clearance before application, each large water pump overhaul should clean up the bearing of the cooling jacket when scale and sundry, to ensure the water flow.

6, the packing gland should be on the shaft or the shaft sleeve to move freely, gland inner hole and shaft or the clearance between the shaft sleeve to keep uniform, wear and tear shall not exceed 3%, more than to inlaying or update. Water seal line to keep open.

7, requirements for absorbing water bottom valve repair, action to be flexible, sealing is good. The use of vacuum pump water to ensure the suction valve without leakage phenomenon, vacuum pump to keep in good condition.

8, check the working condition of the check valve, sealing ring is sealed and pin for wear too much, buffer and the validity of other devices, if any damage should be timely repair or replacement. Water control valve to timely inspect and replace the packing, in order to prevent leakage.

9, pump pressure gauge, vacuum gauge, should by measuring authorities check once a year, and clean up the pipe and valve.

2, horizontal multistage pump parts of runtime maintain

1, cleaning rust inside the pump shell, such as a large pit should be repaired, besmear brushs antirust paint again after cleaning.

2, timing of bearing inner lubricating grease. For the new water pump is equipped with sliding bearing, run about 100 h, lubricating oil should be changed, after every run 300 ~ - 500 h oil should be replaced once, but an oil change at least once every six months. Rolling bearings for every 1200 ~ 1500 h operation should be added butter at a time, but at least the oil change once a year. Low speed of the pump can be appropriately extended.

3, such as a long period of time does not continue to use or in winter, it should be within the pump and the water is put inside the pipes, in case of rust or frost crack.

4 are connected to the motor, check whether the coupling of connection is good, the key and keyway cooperate with and without loose phenomenon, and timely correction.

5, at the end of the season to irrigation and drainage, to conduct a minor repair, cumulative operation should be around 2000 h for an overhaul.

6, motor maintenance shall be carried out by a professional electrician maintenance personnel, forbid don't understand the electricity personnel

7, in case of catastrophic situations, such as the waters flooded underground pump room, etc. , should be promptly eliminate seeper, cleaning and drying machine and other electrical appliances, and proved to all electrical and mechanical facilities in good condition before commissioning.

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