Home>Bearing knowledge>Pump skills hot analysis: What are the priorities of agricultural submersible pump protection?

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Hot analysis of pump skills: What are the priorities of agricultural submersible pump protection?

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The submersible pump should be properly maintained; to extend its service life and ensure normal use during busy hours:
1. Replace the smooth oil: Do not open the oil hole screw inside the sealing chamber and the motor; discharge the smooth oil inside the sealed chamber and the motor all the way; replace the new oil; ensure the smooth operation of the smooth system.
2. View the wearing parts: the impeller, buckle, bushing, bearing seat, etc. of the submersible pump are wearing parts. The water pump should be removed first; check whether the wearing parts are indispensable. It is forbidden to use the damaged and unqualified zero. Accessories.
3. Remove the pump casing against rust: before the spring application; the uppermost pump casing should be disassembled; the impeller should be turned on and then closed; in order to prevent the components from rusting, the motor can not be started normally and burned. This protection is for the water-filled motor. Particularly important.
4. Dry motor: measure the insulation resistance of the winding and the outer casing of the submersible pump with a 500 megohm meter; if the resistance value is lower than 0.5 mega ohm; the motor moisture should be removed. The dry method includes: external boring method, current boring method and The combined boring method of the two together. The external boring method is to use external heat source for disposal; the commonly used methods are: (1) blowing hot air: the blower using the electric heater (the small submersible pump for agriculture can use the hair dryer) to blow the hot air to reach the dry disposal Intention, (2) bulb baking: in a closed box; use several 200 watt bulbs for baking. Pay attention to the baking temperature should not be too high; should be controlled below 125 °C, (3) current is boring: according to the impedance of the submersible pump And the size of the power supply will connect the three-phase winding of the motor in series or in parallel; then connect a variable resistor; adjust the current amount to about 60% of the rated current value;
5. Guaranteed sealing: The demand for sealing of agricultural submersible pumps is very strict; when replacing the smooth oil in the sealed chamber; if it is found that the oil is dirty and the water content is high, it is necessary to replace or replace the sealed box or the sealing ring with the whole piece; Excellent sealing function.
6. View the bearing: check some upper and lower bearings of the motor; if it is found that the wear or the gap is too large; replace the new bearing in time; prohibit the use of "with disease". The method is as follows: If the motor is working; "Acoustic; and the cycle is proportional to the rotational speed; and it is difficult to change the rotor by hand; it is a bit squat or a torn off on the bearing raceway, if the bearing announces intermittent "beep" sound; Uncertain dead point; usually ball frame damage, inner ring break or ball breakage. In case of the above; it is necessary to replace the bearing; avoid greater damage.
7. Ensure the bearing is smooth: For the water-filled submersible pump, check the skeleton oil seal and lithium-based smooth grease of the upper and lower end cap bearing chambers to ensure that the bearing works in a smooth and outstanding state for a long time.

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