How to conserve agricultural submersible pump？

In the season, the reply submersible pump the extra maintenance, to extend the use life spans and ensure the busy hour deformity:

1, review the vulnerability: submersible pump impeller, retaining ring, shaft sleeve, bearing seat is wearing parts, etc. Should take the lead in the water pump all removed, review the vulnerability is complete. It is forbidden to use spare parts for damage and not decent.

2, replace smooth oil: separation opened the sealed chamber and external motor oil hole of the screw, the seal smooth oil heavily out of interior and external motor and replace the new oil, ensuring smooth spare deformity.

3, tear open pump shell rust prevention: autumn before use, should open the pump shell at the next higher level, closing again after starting rotating impeller, in case the component rust) deformity and burning motor starting. The remaining on the water filling type motor is futile.

4, it leak sealing: agricultural submersible pump seal to extremely broad, the replacement oil seal indoor smooth, then found that oily turbidity and high water content, it must be whole replacement or replace seal box or sealing ring, in order to ensure the sealing performance is good.

5, dry motor: with 500 megohm meter measuring the insulation resistance of the submersible pump winding and joke if resistance less than 0.5 ohms, should be the moisture of drive motor. Dry steps are: internal dryness dry method, the direct current method and the simultaneous continue dry coupling method. Continue to solve internal dryness method is the use of internal heat source, takes the measures are: (1) blow foehn: make use of the water heater blower (agricultural medium water circulating pump) blow foehn to achieve dry solution; 2 bulbs baking: in the sealed box, using a number of light bulb continue to around 200 watts. Careful baking heat) is too high, should be master in 125 ℃ condition; Dry (3) direct current (dc) : can be according to the size of impedance and power of submersible pump motor series three-phase winding or in series, and then connected to a variable resistor, adjustment of dc power for additional dc value of around 60%, dry back.

6, to ensure the smooth bearing: for filling water submersible pump should review the change of high and low bearing chamber's oil seal and smooth lithium base grease. To ensure the bearing long-term operation in a smooth and good condition.

7, review bearing: review the motor of the upper and lower bearings, if discover wear or gap is too big, must be timely replace new bearing, it is forbidden to "being" will apply. Review steps like: if the motor is running, "MAO unter den" sound, and the cycle is inversely proportional to the speed, and turn the spinor advocate energy saving, by hand is bearing rolling path is a bit acerbity or avulsed; If the bearing inner back staccato "stuck to choke" sound, turn the spinor by hand not sure of the dead point, normal steel ball is corrupt, inner ring rupture or steel ball and broken. Meet the above condition, be sure to replace bearings, lest cause more worse.