What should be done about common failures of acid and alkali resistant vertical pumps?

　　Acid and alkali resistant vertical pump because it is corrosion resistant, can be idle, easy to install, small footprint and other advantages, making the acid and alkali resistant vertical pump suitable for a variety of occasions. It can be used for spray tower exhaust treatment project, etching spray washing process, electrophoresis paint liquid circulation, wastewater lifting process, etc. So in the acid and alkali resistant vertical pump in the use of the process, acid and alkali resistant vertical pumps, what are the common failures, and how to solve it? The following Schwab Pump & Valve will talk to you.

　　Acid and alkali vertical pump common faults and solutions

　　1, the motor can not start

　　① Check the breaker, power changes caused by circuit overload.

　　② Check whether the power supply contact is loose, whether the power supply is out of phase.

　　③ Impeller and pump body bite dead, replace the parts.

　　④ Impeller jammed, remove debris.

　　2、Power overload

　　① The specific gravity of the liquid is too large, selection error.

　　② voltage instability caused by overload.

　　③ Impeller and pump body friction, re-organization.

　　3、Small flow or no flow

　　Failure causes: motor reversal, abnormal inlet and outlet ball valves, tank liquid pumping, head is too high.

　　Solution:

　　① Check whether the inlet screen is blocked.

　　② check whether the impeller is stuck on the debris.

　　③ Inlet pipe diameter is too small.

　　④Check whether the outlet is blocked.

　　⑤Check the steering of the motor and take the clockwise rotation of the motor blades as positive rotation.

　　⑥ Motor speed is too low, check whether the voltage is correct.

　　⑦ Whether the inlet and outlet ball valves are all open.

　　⑧ consider whether the head is too high, can be installed at the exit position of the pressure gauge or visualizer.

　　4, insufficient flow

　　Analysis of the reasons: and then exclude the selection of the wrong case, consider the following: the entrance and exit ball valve abnormal, power reverse, voltage instability, the exit caliber is larger than the exit pipe.

　　Solution:

　　① clean up the inlet screen and check whether the inlet and outlet ball valves are in the open state

　　② electrician to check the voltage and deal with the inspection of the export line diameter whether there are changes.

　　5、Motor operation is normal but can not send liquid

　　Solution:

　　① outlet valve closed, open the ball valve.

　　② inlet air into the entrance, check the inlet pipeline.

　　③ Inlet level is too low to cause no liquid in the pump, need to replenish the liquid.

　　Recommended reading: acid and alkali vertical pumps have what uses

　　6, the pump running vibration noise is too large

　　Failure analysis: bearing abnormalities, inhalation of impurities

　　Solution:

　　① mainly check whether the motor ball bearing part of the corrosion damage phenomenon.

　　② motor shaft bending, replace the motor shaft.

　　Bearing seat is damaged, replace the bearing seat.

　　④ Disassemble the front cover of the acid and alkali vertical pump, check whether there are impurities inhaled, clean up impurities can be.

　　7、Pump leakage

　　① Replace the 0-ring.

　　② such as leakage between work, you should check whether the outlet is blocked, resulting in too much outlet pressure; such as leakage during shutdown you should check whether the inlet is blocked, or consider installing a backstop valve outlet.

　　8, fasteners (screws or nuts) damaged

　　① Replace the fasteners.

　　② Replacement of chemical-resistant fasteners. (such as PVC, PP, PPS, titanium).

　　9, the current is too large.

　　Failure analysis: the outlet pressure is too high, the viscosity of the liquid is too large.

　　Solution: Adjust the selection.

　　Vertical submerged pumps are used to transport acidic and alkaline, corrosive media containing any strength, long-term transportation environment, prone to some failures, proficiency in vertical pumps common failures and the corresponding measures to deal with them, you can largely ensure the stability of the equipment.