Faults And Troubleshooting Methods During The Operation Of Cip Reflux Pump

CIP Return Pump is a centrifugal pump (single-stage and multi-stage), with vertical and horizontal structures. The pipeline pump is named CIP reflux pump because its inlet and outlet are in the same straight line and the inlet and outlet diameters are the same, which is similar to a section of pipeline and can be installed at any position of the pipeline. Structural features: It is a single-suction single-stage centrifugal pump, with the inlet and outlet being the same and in the same straight line, perpendicular to the axis center line, and a vertical pump. The pipeline pump's flow-through parts are made of high-quality materials such as cast iron, 201 stainless steel, 304 stainless steel, and 316 stainless steel. It is used to transport corrosive liquids in industries such as petroleum, chemical, metallurgy, electric power, papermaking, food, pharmaceuticals, and synthetic fibers. The operating temperature is -20℃~+120℃. This series of CIP return pumps, horizontal pipeline pumps, hot water pipeline pumps, and multi-stage pipeline pumps have smooth operation without vibration; carbide seals of different materials ensure that there is no leakage in the transportation of different media; low noise: the water pump under two low-noise bearings runs smoothly, except for the faint sound of the motor, there is basically no noise; low failure rate: the structure is simple and reasonable, and the trouble-free working time of the whole machine is greatly improved.

Faults and troubleshooting methods that may occur during the operation of CIP return pumps

1. The water pump does not produce water

Reason: Insufficient water injected into the water pump, the direction of rotation is wrong, and the impeller flow channel is blocked.
Troubleshooting method: Inject more water into the water pump, pass the impeller flow channel, and adjust the rotation direction.

2. Insufficient water pump flow

Reason: The water pump is partially blocked, the speed is too low, the total head is higher than the pump rating, and the impeller is damaged.
Troubleshooting reasons: Clean the water pump and pipes, replace the impeller, increase the speed of the water pump shaft, and adjust the outlet valve.
3. Reasons and solutions for insufficient outlet pressure

Reason: There is air in the liquid, the speed is too low, the impeller is damaged, and the outlet valve is opened too wide.
Elimination of causes: Eliminate air in the liquid, increase the pump speed, replace the impeller, and reduce the outlet valve.

4. The pump consumes too much power (motor heating) cover

Reason: Mechanical defects such as too small operating clearance, motor shaft bending, loose bolts, etc. The pump works at too large a flow rate, that is, the pump works at a rate far below the rated head.
Elimination of causes: Check the mechanical part and adjust it in time, adjust the outlet valve to make the pump work near the rated flow rate and head 5. Water pump vibration.
Reason: The pipeline system is not well supported, the impeller is partially blocked, causing imbalance, cavitation, and there is air in the liquid. Elimination of causes: Check the support department, tighten the nut, pass the impeller to balance it, and eliminate air.

6. Water pump leakage

Reason: Mechanical seal damage, O-ring damage, pump body leakage.
Elimination method: Replace the mechanical seal and O-ring, and weld the leaking part of the pump body.
7. Causes and solutions for excessive water pump noise

Causes: bearing overheating, lack of oil, water pump overload.
Cause elimination: add oil to the bearing, and eliminate according to 4.