The working performance and working environment of self-priming centrifugal pump need to be improved

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The self-priming sanitary pump has a broad market prospect, but it is still necessary to continue to improve the working performance, improve the reliability of use, and use a diversified working environment.

Principle of self-priming sanitary centrifugal pump : Due to the special design of the pump casing. Its sealing performance is higher than that of a general sanitary negative pressure pump , and the water in the pump casing will not be automatically emptied after the motor is stopped. The motor drives the turbine to rotate at a high speed, quickly forming a negative pressure (vacuum) in the pump. Use atmospheric pressure to press the water to the pump casing, and then centrifuge the head. Therefore, the suction stroke of the sanitary rotor pump does not exceed one atmosphere, and the suction stroke is generally within 3 to 7 meters. Self-priming centrifugal pump, it has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. There is no need to install a bottom valve in the pipeline, and only need to ensure that the pump body has a quantitative priming liquid before work. Therefore, the piping system is simplified and working conditions are improved.

Self-priming centrifugal pumps are more effective as emergency pumps in industrial and agricultural production, emergency rescue, such as flood drainage and fire fighting. It is widely used for urban water supply in industrial sectors such as petroleum, chemical industry, metallurgy, machinery, chemical fiber, food, energy, transportation, etc. It can also be used for agricultural irrigation and sprinkler irrigation. It is used to transport clear water or other liquids whose viscosity is less than 5°E and the temperature is lower than 80°C, which are similar to clear water in physical and chemical properties. The product is widely used in fluid transportation due to its safety, reliability and stable performance.

Features of self-priming centrifugal pump:

1. Adopt single (double) circulation impeller, with strong sewage discharge capacity, no blockage, solid passing capacity is 60% of the caliber.

2. The tearing and crushing mechanism can tear and cut the fibrous material, and then discharge it smoothly, without adding a filter to the pump.

3. The use of titanium alloy mechanical seal can make the pump safe and continuous operation for more than 8000 hours.

4. Compact structure, easy to move, simple to install, no need to build a pump.

Compared with other types of self-priming centrifugal pumps, the self-priming centrifugal pump has the simplest structure because there is no check valve, the work is the most reliable, the trouble-free working time is long, the maintenance, the use is convenient, the volume is small, the weight is light, and the efficiency is high. , Special considerations have been made in the design. Compared with pumps of the same caliber, the pump has large displacement and high performance.

With the continuous development of economy, zx self-priming centrifugal pumps are used more and more widely in production engineering due to their advantages of strong sewage discharge capacity, high efficiency and energy saving, and good self-priming performance. Not only can it be applied to urban environmental protection, construction, fire fighting, chemical, pharmaceutical, dye printing and dyeing, brewing, electric power, electroplating, papermaking, petroleum, mining, equipment cooling, oil tanker unloading, etc. It is also suitable for clean water, seawater and medium with acid and alkalinity whose viscosity is less than or equal to 100 centipoise, and the solid content can be up to 30℅ or less. Chemical medium liquid and slurry with general paste.

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