Sewage pump is a kind of non-blocking pump. It has various forms: for example, submersible and dry. The most common submersible type is WQ submersible sewage pump. The most common dry sewage pump is W-type horizontal sewage. Pump and WL vertical sewage pump.
It is mainly used to transport urban sewage, and contains fibers in feces or liquids. A medium of solid particles such as paper dust, usually at a temperature of not more than 80 ° C.
Because the medium being conveyed contains fibers that are easily entangled or bunched. Therefore, the pump flow path is easy to block, and once the pump is blocked, the pump can not work normally, or even burn the motor, thereby causing poor drainage. It has a serious impact on urban life and environmental protection.
Therefore, it is very important to ensure the normal operation of the sewage pump. Let’s take a look at how to repair the sewage pump.
(1) Check the sewage pump pipeline and joints for looseness. Turn the sewage pump by hand to see if the sewage pump is flexible.
(2) Add bearing lubrication oil to the bearing body, observe that the oil level should be at the center line of the oil mark, and the lubricating oil should be replaced or replenished in time.
(3) Unscrew the water plug screw of the pump body of the sewage pump and infuse the water (or the slurry).
(4) Close the gate valve and outlet pressure gauge of the outlet pipe and the inlet vacuum gauge.
(5) Jog the motor and check if the motor is turning correctly.
(6) Start the motor. When the sewage pump is running normally, open the outlet pressure gauge and the inlet vacuum pump, and then display the appropriate pressure, gradually open the gate valve and check the motor load.
(7) Try to control the flow rate and head of the sewage pump within the range indicated on the sign to ensure that the sewage pump operates at the highest efficiency point to obtain the maximum energy saving effect.
(8) During the operation of the sewage pump, the bearing temperature should not exceed the ambient temperature of 35 °C, and the maximum temperature should not exceed 80 °C.
(9) If the sewage pump is found to have abnormal sound, stop immediately and check the cause.
(10) When the sewage pump is to be stopped, first close the gate valve and pressure gauge, then stop the motor.
(11) During the first month of operation, the Zhongkai Pump Sewage Pump will change the lubricating oil after 100 hours, and then change the oil once every 500 hours.
(12) Regularly adjust the packing gland to ensure that the dripping in the packing chamber is normal (it is better to make a drip leak).
(13) Regularly check the wear of the bushings and replace them in time after the wear is large.
(14) When the sewage pump is used in the cold winter season, after parking, the water plug of the lower part of the pump body should be unscrewed to release the medium. Prevent freezing cracks.
(15) For long-term decommissioning of the sewage pump, it is necessary to disassemble the pump completely, dry the water, and apply the grease to the rotating part and the joint.
The pump should be divided into two aspects: electricity and machine. For the machine aspect, the previous maintenance record is mainly adjusted and compared. The second is the aspect of electricity. To understand the power of each pump motor, you must have a certain understanding of his control system.
It is suitable for pumping liquids containing fibers or other suspended solids below 80 °C for use in cities, industrial and mining, enterprises, sewage, manure, and some aquatic products. If you are ordering liquids that are acidic and alkaline and contain other chemical mixtures that can cause corrosion, the factory can supply pumps that are assembled with anti-corrosion materials.
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