How to maintain self-priming sewage pump and pump troubleshooting

How to maintain and repair self-priming sewage pump and common pump troubleshooting First, self-priming sewage pump maintenance 1) check the self-priming pump pipe and the combination of loose phenomenon. Turn the self-priming pump with your hand or a tool to see if the drain pump is flexible. 2) try to control the self-priming pump flow and lift the range indicated on the sign to ensure that the self-priming pump at the highest efficiency point of operation, in order to get the maximum energy-saving effect. 3) self-priming pump during operation, the bearing temperature can not exceed the ambient temperature 35C, the maximum temperature shall not exceed 80C. 4) If there is abnormal sound self-priming pump should stop immediately check the reasons. 5) Sewage pump to stop using, first close the gate valve, pressure gauge, and then stop the motor. 6) self-priming sewage pump for a long time not in use and in winter season, after parking, you need to unscrew the lower part of the drain plug to drain the media to the net. Prevent cracking. (If the sewage, please clean the pump chamber with water) 7) Seriously listen to the motor running sound is abnormal, due to run-time engine room noise larger, can help with a screwdriver or aids such as sticks, If you often hear, not only to find the motor and its drag device, the adverse vibration, even the number of internal bearing oil can determine, and thus make the timely addition of bearing oil, or replace the bearing and other appropriate measures to deal with, to avoid the lack of oil bearing dry Grinding and blocking turn, take the outer circle, broom burn. Second, troubleshooting pump failure a, pump head is not enough 1, stainless steel self-priming pump impeller corrosive liquid used for serious corrosion? Change the impeller 2, the pump performance can not meet the design requirements? In order to meet the design requirements of Bo Yu pump 3, lack of speed? Check the current, speed recovery 4, semi-open impeller and pump cover clearance is too large? Reduce the gap b, the pump vibration serious 1, pump and motor shaft is not the same? Adjust, align the pump and motor shaft 2, the pump shaft bending? Remove the straightening or replacement 3, impeller imbalance? Remove the balance to find c, pump bearing overheating 1, lubricating oil (fat) is not enough? Add grease (grease) to the required standard 2, pump and motor shaft is not the same? Adjust, align the pump and the motor shaft 3, bearing damage? New Bo Yu pump bearings Third, the pump mechanical seal leak 1, the lack of spring pressure? Re-adjust the amount of spring compression or change the spring 2, change or static ring end corrosion, wear or scratches? Repair or replace the bad ring static ring 3, the fixing screw is loose, the spring loses effect? Tighten the screws or re-adjust the spring 4, moving ring seal assembly ramp or corrosion deformation? Reinstall or replace Bo Yu pump ring 5, static assembly skew? Heavy Bo Yu pump with static 6, the sleeve machining accuracy and finish is not enough, affecting the axial movement of the moving ring? Change the machining accuracy of the sleeve 7, impurities, foreign matter or medium crystallization affect the axial movement of the moving ring or support in the dynamic and static end of the ring? Eliminate impurities, foreign matter and crystallization, thoroughly clean the sealing element Fourth, the pump packing leak serious 1, the packing pressure is too loose? Tight packing gland to an appropriate level 2, packing device is not good? Adjust the packing take the mouth, so that a certain angle is not in a direction of stagger 3, the packing size or serious wear and tear? Replacement of a unified model Bo Yu filler 4, the poor quality of the filler seal is not good? Replacement of asbestos packing to meet the requirements 5, sleeve wear too much? Replace the sleeve five, the pump motor overheating 1, the use of (flow, head) than the pump design requirements? Select the appropriate type of motor spectrum 2, the proportion of more than the pump motor configuration motor? Configure the appropriate Bo Yu pump motor 3, packing gland pressure is too tight or mechanical seal spring is too tight? Re-adjust the gland or mechanical seal spring compression 4, the pump assembly quality is poor, there is friction or motor and the pump shaft is not the same? Check assembly quality, eliminate assembly problems