Inspection and Maintenance of Deep Well Pump Ring

Deep well pump parts inspection and repair is divided into mouth ring, impeller, balance device, shaft seal device, pump shaft, bearings, pump, etc. are described below.
1. ring (also known as seal ring)
The role of the upper ring deep well pump ring is formed in the impeller and pump shell narrow, tortuous channel, to increase the flow resistance of the medium to achieve the purpose of reducing media leakage. The ring is also set to protect the main parts of the pump from the role of wear and tear in the mouth ring wear and tear, you can repair or replace the new ring to restore the normal assembly gap, which is economical and easy maintenance. The integrity of the mouth ring and its radial gap with the impeller asked the gap, in the demolition of the pump should first check. If the mouth ring has grooves or other defects or has ruptured, or gap over the required value, should replace the new mouth ring or repair the original mouth ring repair welding.
Pump in operation, the mouth of the ring and the impeller corresponding to the wear and tear caused by the gap increased by more than the specified value, because the new ring diameter should be the impeller inlet diameter to the preparation of the impeller and the ring between the radial ring asked Gap provisions. In the repair process, the gap to a smaller point in order to improve the pump efficiency and extend the use of time.
1. Repair welding steps are as follows:
1) Brush the dirt on the ring.
2) with the mass fraction of 5% hydrochloric acid, activated again.
3) into the temperature of 90 ℃, l0% mass fraction of caustic soda in the dip, and then placed in clean water, 90 ℃.
4) repair welding alloy. Preheat the mouth ring to about 100 ℃, with the appropriate welding ring welding alloy on the original ring, with the same alloy with the original alloy pre-cast into the electrode, along the circumference of the circle or vertical direction along a road even welding up (not repeated Re-welding). After welding, can be machined to the required standard size.
If the alloy produced peeling, loss or excessive wear and tear can not be used repair welding repair, will have to re-alloying. After installing the new mouth ring, it should check whether it meets the requirements of the gap with the impeller. At the same time, to check the friction between the two asked whether the phenomenon, the method is coated in the rotor part of the red lead powder, and then turn the rotor, if the mouth ring with red lead powder must be rework.