Methods to increase the flow rate of booster pump
The methods to increase the flow rate of the booster pump mainly include the following aspects:
1. Maintain the rated speed
Principle: According to the proportional law of the booster pump, the flow rate is proportional to the speed. When the speed decreases, the flow rate will also decrease accordingly.
Measures: When using a pipeline booster pump, the booster pump should be kept working within the rated speed range as much as possible to ensure a stable flow output.
2. Reduce the suction height
Principle: Without changing the motor model, the larger the suction height of the multi-stage booster pump, the smaller its water output will be.
Measures: Without requiring a high water lifting height, the suction height should be reduced as much as possible to increase the water output and flow rate of the booster pump.
3. Reduce pipeline losses
Principle: Losses in the pipeline (such as friction loss, local loss, etc.) will reduce the flow rate of the booster pump.
Measures:
Shorten the length of the booster pump pipeline to reduce friction loss.
Increase the diameter of the water pipe to reduce the flow rate and reduce resistance.
Ensure that the surface in the pipeline, the inner surface of the turbine body and the working surface of the impeller are smooth to reduce local losses.
Reduce the curvature of the pipe to avoid flow loss caused by sharp bends.
Clean up debris in the pipeline regularly to prevent blockage.
4. Reduce valve body resistance
Principle: Increased valve body resistance will lead to reduced flow, especially the impact of the bottom valve on flow is more significant.
Measures: For small water pumps that can be equipped with soft water pipes, the bottom valve should be removed, and the water pipe should be filled with water when diverting water, and then the power should be started while the water pipe is lifted high to reduce valve body resistance and increase flow.
5. Remove air from the pipeline and pump body
Principle: Air in the pipeline and pump body will reduce water output.
Measures: When the water pump is working, the air vent plug on the upper part of the volute body should be opened at any time to eliminate air resistance, thereby increasing water flow.
6. Eliminate air leakage in the pipeline and pump body
Principle: Air leakage in the pipeline and pump body will reduce the vacuum degree, thereby reducing the flow of the booster pump.
Measures: Ensure that the connection and seal of each pipeline are reliable and the gasket is installed correctly. If the elasticity of the sealing packing at the shaft hole disappears, it should be replaced in time to ensure sealing.
7. Replace worn leakage rings and impellers
Principle: Wear of leakage rings and impellers will increase the gap, increase water backflow, and reduce flow. Too small a gap will increase friction resistance and also reduce flow.
Measures: When the gap between the leakage ring and the impeller reaches 1 mm, the old leakage ring should be replaced and the impeller inlet should be turned to make the fit gap reach the optimal state of 0.3~0.5 mm.
8. Lubricate the bearings of the water pump
Principle: Too large bearing gap or poor lubrication will increase the running resistance and reduce the water output.
Measures: Before drainage and irrigation operations, the water pump should be inspected, the bearing gap should be checked, and the severely worn parts should be replaced. At the same time, butter should be added to each bearing to fully lubricate the bearings.
9. Correctly install the water pump
Principle: The installation position and method of the water pump will affect its performance.
Measures: Install the water pump correctly according to the instructions and ensure that the installation position meets the requirements for the allowable vacuum height. If there are multiple units in the same machine room, there should be enough distance between the units and between the units and the wall to ensure ventilation and heat dissipation.
