Many accidents are happened because of neglect on safety knowledge which led to the the tragedy, this article gave you popularize safe operation of the pump.
Slurry routine maintenance
1) The pump suction piping system does not allow air leaks, pool pump inlet grille should meet requirements particles can pass through the pump to prevent large particles of materials or long-fiber material into the pump clogged.
2) To be replaced easily cast damaged pieces, repair assembly should be correct, the gap should be adjust reasonable and can not astringent tight friction phenomenon.
3) bearing pressure, to meet the requirement of water at any time to adjust (or replace) the tightness of packing, do not cause leakage of slurry seal. And timely replacement of bushings.
4) Replace the bearings, the bearing assembly must ensure that there is no dust, oil cleaning, the pump runs when the bearing temperature is generally not more than 60 – 65 ℃ appropriate, the maximum does not exceed 75 ℃.
5) To ensure concentricity motor and pump to ensure complete and accurate coupling elastic cushion, damaged should be replaced.
6) ensure that the pump components and piping systems installed correctly, solid and reliable.
Check before operation
1) Check the motor rotation direction and the direction of rotation of the pump provides consistent (please refer to the corresponding model parameters: http://www.sjzsbc.com/products.asp). In the test motor rotation direction should be separate test motors, pumps must not be linked with the same test.
2) Check whether the coupling of the elastic pad is complete and correct.
3) Check the rotation of the motor shaft and the pump are concentric.
4) hand drive vehicles (including motor) pump should not be tight astringent and friction phenomena.
5) Check the bearing housing is added to the oil bearing oil label indicating position.
6) before opening slurry you should first opening of seal water (mechanical seal cooling water), and to expand the pump inlet valve, close the pump outlet valve.
7) Check that valves are flexible and reliable.
8) Others, such as bolts, flange gaskets and bolts. Piping systems are installed correctly, solid and reliable.
Start running and monitoring
1) Slurry should commence prior to embarkation pump inlet valve, close the pump outlet valve. Then start the pump, after the pump starts and then slowly turning on the pump outlet valve, pump outlet valve opening size and speed, the pump should be mastered by non-vibration and over-current motor .
2) in series with the pump start, also follow the above method. Just open a pump, you can be the final stage of the pump outlet valve open a little to find (opening sized to a pump motor nominal current is 1/4 is appropriate), and then to have launched two three until the end of the pump, pump all the series starts, you can gradually turn up the final stage of the pump outlet valve, the valve opening size of the speed of the pump should be mastered by non-vibration and no excess of any one pump motor constant current.
3) slurry pump mainly for the purpose of conveying flow, so the operation monitoring system is preferably mounted on flow meter (meter) to monitor traffic at any time to meet the requirements; equipped with a cyclone piping system, slag system , filter press dewatering system also requires a certain pipe pressure at the outlet. Therefore, in such a system should be put on the pressure gauge to monitor compliance.
4) In addition to monitoring the operation of the pump flow rate, pressure, but also to monitor the motor should not exceed the rated current of the motor. Always monitor the seals, bearings, such as whether the phenomenon occurs often lead pump or overflow has occurred evacuated pools and ready to deal.
Slurry pump disassembly
A) removable head portion of the head portion of the disassembly and assembly drawings gap adjustment should be carried out.
2) packing shaft seal section shall be filled disassembly assembly diagram, in order to ensure the packing seal sealing effect, the shape of the filler openings should be as shown below cut scissors, into the stuffing box, the adjacent filler openings should be staggered into 108 degrees.
Post time: Jul-13-2021