During the operation of split-case pumps, a decline in efficiency is a relatively common issue,This not only affects work progress but may also increase energy consumption,The following is a summary of common causes of efficiency decline in split-case pumps and corresponding solutions, compiled by the after-sales technical engineers of Zoomlian Pump Industry for users' reference.
I. Impeller-related Issues
The impeller is a core component of the split-case pump, and its condition directly affects the pump's efficiency, Impeller wear is one of the common causes of efficiency decline. Long-term transportation of media containing fine particles will gradually wear the impeller surface, change the shape of the blades, and thus affect the water flow propulsion efficiency. In addition, impeller scaling can also reduce efficiency. Minerals such as calcium and magnesium in water deposit on the impeller surface, narrowing the water flow channel and increasing water flow resistance.
For impeller wear, if the wear is mild, the impeller can be repaired and polished; if the wear is severe, a new impeller needs to be replaced. For impeller scaling, the impeller can be cleaned regularly to remove surface dirt. At the same time, when transporting media, try to reduce the impurity content to extend the service life of the impeller.
II. Pipeline System Issues
Pipeline blockage or poor flow can greatly affect the efficiency of the split-case pump. Debris, algae, etc., may accumulate in the pipeline, causing the water flow channel to narrow, increasing resistance, and reducing the pump's water output. In addition, pipeline leakage can also cause efficiency decline. The medium transported by the pump will lose part of its energy during the leakage process, and it will also affect the system pressure.
When pipeline blockage occurs, it is necessary to timely clean the debris and algae in the pipeline, Mechanical cleaning or chemical cleaning methods can be used, depending on the specific blockage situation. For pipeline leakage, find the leakage point and repair or replace the damaged pipeline components to ensure the tightness of the pipeline.
III. Lubrication System Issues
Rotating components such as bearings of the split-case pump require good lubrication,If lubrication is poor, it will increase the frictional resistance between components, reduce the pump's operating efficiency, and may even cause component damage in severe cases. Insufficient lubricating grease, deteriorated grease, or grease containing impurities will all affect the lubrication effect.
To solve the problems of the lubrication system, regularly check the quantity and quality of lubricating grease. When the grease is insufficient, add appropriate lubricating grease in a timely manner; if the grease is deteriorated or contains impurities, it is necessary to clean up the old grease and replace it with new qualified lubricating grease. At the same time, lubrication maintenance should be carried out in accordance with the cycle specified in the pump's instruction manual.
IV. Motor Issues
The motor is the power source of the split-case pump, and problems with the motor can also lead to a decline in the pump's efficiency. Unstable motor voltage will cause fluctuations in the motor's output power, affecting the normal operation of the pump; damage to the motor windings will reduce the motor's efficiency and may even prevent it from working normally.
In the case of unstable motor voltage, a voltage regulator can be installed to stabilize the voltage. If the motor windings are damaged, the motor needs to be repaired, with the windings rewound or the damaged motor components replaced. In daily use, pay attention to monitoring the operating status of the motor and promptly detect and solve problems.
V. Installation and Adjustment Issues
Improper installation and adjustment of the split-case pump can also affect its efficiency. A large deviation in the coaxiality between the pump and the motor will increase vibration and noise during operation, and also reduce the pump's efficiency; improper adjustment of the pump's inlet and outlet valves will make the pressure and flow of the pipeline system unreasonable, affecting the working state of the pump.
During installation, ensure that the coaxiality between the pump and the motor is within the specified range, which can be achieved by adjusting the position of the motor or the pump. For the inlet and outlet valves, adjust them reasonably according to actual work requirements to make the pump operate under optimal working conditions.
By understanding the above common causes and solutions, strengthening the maintenance and upkeep of the split-case pump in daily use, and promptly detecting and handling problems, the operating efficiency of the split-case pump can be effectively improved and its service life can be extended.
