A double suction fire pump is our company's new fire pump group product. It mainly achieves the effect of high use efficiency, full and broad spectrum by improving the impeller condition. A double suction fire pump can use an electric motor and diesel engine as driving form. This series of pumps can meet the requirements of fire pumps in terms of performance, structure, materials and matching.

The working principle of double suction fire pump

The basic components of a double-suction pump are a high-speed rotating impeller and a fixed snail-shaped pump casing. An impeller with multiple (usually 4 to 12) back-curved blades is fixed on the pump shaft and is driven by an electric motor to rotate together with the pump shaft at high speed.

The impeller is the component that acts directly on the liquid in the pump and is the energy supply device for the pump. The oil suction port in the center of the pump casing is connected with the oil suction pipe, and a one-way bottom valve is installed at the bottom of the oil suction pipe. The discharge port near the side of the pump casing can be connected to the discharge pipe equipped with the regulating valve.

The structure of double suction fire pump

The double-suction fire pump is mainly composed of pump body, pump cover, shaft, impeller, sealing ring, shaft sleeve, bearing components, etc. The use of each component requires regular maintenance to prevent latent failures. Timely maintenance or replacement of severely worn components can avoid major failures It can also make the double-suction fire pump have a longer service life.

What are the characteristics of double suction fire pump?

1. Advanced hydraulic model, high efficiency and wide performance range.

1. Horizontal structure, easy installation and maintenance, small footprint.

1. Small vibration and low noise. Hydraulic balance of axial force is adopted to make the pump run smoothly, safely and reliably.

1. The inlet and outlet of the pump are on the same horizontal axis, which is convenient for pipeline connection and extremely convenient for loading and unloading.

Application of double suction fire pump

Applicable occasions for double suction fire pump: fire water supply in residences, hotels, office buildings, commercial buildings, factories, hospitals, etc. Under normal circumstances, as long as any flow and pressure working point are selected within the performance range of the double-suction fire pump, the appropriate model can be provided to meet user needs. The double-suction fire pump also needs to pay attention not to exceed the rated performance of the selected model during use. During operation, the bearing temperature should not exceed the ambient temperature of 35 degrees, and the higher temperature should not exceed 80 degrees. The junction table between the horizontal pump and the pipeline should ensure good air tightness, especially the water inlet pipeline, which must be strictly air-tight, and there should be no possibility of air trapping on the device.

Precautions for the use of fire pumps

1. The water inlet pipeline must be highly sealed, without water leakage or air leakage;

1. It is forbidden to run the pump for a long time in the state of cavitation;

1. It is forbidden to run the motor over current for a long time when the pump is running under large flow and low lift conditions;

1. Regularly check the current value of the motor during the operation of the pump, and try to make the pump run within the designed working conditions;

1. There should be a special person to take care of the pump during operation to avoid accidents;

1. After the pump runs for a long time, when the noise and vibration of the unit increase due to mechanical wear, it should be stopped for inspection, and the vulnerable parts and bearings can be replaced if necessary. The unit overhaul period is generally one year.

Conclusion

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