Decomposition procedure of deep well pump maintenance

Decomposition procedure for deep well pump maintenance
   Loosen the adjusting screw of the adjusting nut, and loosen the position mark before dismantling the screw. Remove the adjusting nut, remove the screw, remove the waterproof cap and the drive plate of the top of the motor, do the measures to prevent the foreign body from falling into the motor; Remove the pump seat and the motor coupling bolts, vertical, smooth lifting motor, into the designated place; remove the pump seat packing, stuffing gland, unloading gland, unloading screw, Under the base of the pump seat nut, remove the pump seat and outlet pipe connection bolts, decomposition pump and outlet pipe. Lift the pump seat and the pump body, set the pipe splint and the well outlet base pad on the square wood, stuck below the first section of the water pipe flange, tighten the pipe splint bolts to prevent loosening, and then drop the pump on the pipe clamp Above, remove the pump seat and short lift pipe connecting bolt, safety out of the pump seat; according to the same method, followed by the water pipes, couplings, drive shaft, bearing bracket demolished. Caution When the drive shaft is disassembled, use a special wrench to clamp the bottom of the deep well pump coupling, fix it with the pipe clamp, and turn the shaft clockwise to remove the shaft and coupling. Remove the drive shaft to be careful, neatly placed in the prepared two square wood. The last section of the lift pipe should be hung together with the pump to the installation site to put flat disassembly, the demolition of both sides must be thick wooden block pad to prevent rolling, the pump from the lower shell began to dismantle, the first two chains clamp clamped Shell and the shell, forced L, at the same time with the hammer flick, release the lower shell and removed. Impeller and shaft is connected with a cone-shaped set, the demolition, the location should be done to mark, so that reset when the impeller installed. Then, from the inlet impeller impingement cone with a small head, so that the sleeve and impeller loosen the impeller and the taper can be removed, and then spin out the next level in the shell, with the above method to remove the shell, Impeller and taper sleeve, until all the demolition End date. Deep well pump repair process and quality standards with kerosene or gasoline cleaning all the bolts, nuts, the surface should be no serious corrosion, high points, burrs, slippery silk and other defects; each water pipe connection should be no shortage of thread, , If the use of rasp and whetstone scraping; deep well pump nozzle with its surface can not guarantee the seal must be treated or replaced; pump flange surface with the surface grease, rust should be cleaned, polished, repair clean and bright . Anti-reverse device should be cleaned and wiped dry, the parts must not smear oil, butter in case of failure after installation. During the inspection, rubber bushings can not contact with various mineral oil, gasoline, kerosene and other oils, rubber bearings should not have cracks, carbonization and other aging phenomena, or should replace the new sleeve. Check the drive shaft bending, bending too large should be straightened or re-replace the new drive shaft. Water pump should be no serious damage due to cavitation caused by steam holes, grooves. Pump impeller, the shell should be no crack damage, if the above, should be repaired or replaced. Check the pump outlet gate valve and check valve. Gate valve stem and the valve should be connected to the valve head reliable, anti-stop valve should be flexible rotation