What is the working principle of fire pump

The working principle of the fire pump is the same as that of the centrifugal pump. It is driven by the motor. Before starting the pump, the pump body and the suction line are filled with liquid. When the impeller rotates at high speed, the impeller drives the liquid between the blades to rotate. Due to the centrifugal force, the liquid is thrown from the center of the impeller to the outer edge of the impeller (the flow rate can be increased to 15-25m/s), and the kinetic energy is also increased.

Fire pumps should always check the temperature of the pump and motor bearings. The maximum temperature cannot exceed 75 degrees. Check that the working current of the motor should be within the normal range. Check the smooth oil level in the vacuum suction installation on the 5th, 10th, 15th, 20th, 25th, and 30th of each month. The fueling position is at the center line of the oil window or slightly below the center line; start the fire pump and check the pump. Keep a good record, the 1# and 2# pumps run for 15 minutes, and the 3# and 4# pumps run for 5 minutes.
It is necessary to check the fire pump carefully
1. After the pump is started, check whether the vacuum suction installation of the giant compact seal is tight and whether the exhaust is normal.
2. Check the packing seal scale after the pump is started, and the disclosure should not exceed 10-30 drops/min.
3. Regularly check the smooth oil of each part of the pump to ensure that the smooth system works normally.
4. The fire pump regularly checks whether the connected parts are tight and loose.