Fire fighting pump working principle

Fire fighting pump are imported from foreign products. They are divided into different types according to different classification methods. With its characteristics of full sealing, no leakage, and corrosion resistance, it is widely used in environmental protection, water treatment, fire protection and other departments to pump various liquids The ideal pumps for non-leakage, zero-pollution civilized workshops and civilized factories are similar to those of fire protection systems, except that the head and flow are different. The selection basis of the fire fighting pump should be based on the process flow and water supply and drainage requirements.

This article contains the following:

• What is fire fighting pump

• fire fighting pump working principle

• Regular maintenance of fire fighting pump

1.What is fire fighting pump

Installed on fire trucks, fixed fire extinguishing systems or other firefighting facilities, it is used as a special pump for transporting liquid or fire extinguishing agents such as water or foam solutions.

2.fire fighting pump working principle

The prime mover drives the impeller to rotate, drawing water into the pump from A and discharging it to B. The main role of the fire fighting pump is the impeller. The blades in the impeller force the liquid to rotate, and the liquid is thrown out around by the centrifugal force. This situation is like a rotating umbrella, and the water droplets on the umbrella are thrown around. After the liquid in the fire fighting pump is thrown out, the new liquid enters the pump under atmospheric pressure. In this way, water is continuously supplied from A to B. The fire fighting pump should be filled with water before starting. If not filled with water, the impeller can only drive the air to rotate. Because the mass per unit volume of air is very small, the centrifugal force generated is very small, and it is unable to exhaust the air in the fire fighting pump and the drain pipe, causing a vacuum in the pump It won't suck up. The bottom valve of the fire fighting pump is for irrigation, and the regulating valve on the outlet side of the pump is used to regulate the flow. The vehicle fire fighting pump can be filled with water before it starts. When it is necessary to absorb water from a natural water source, it is necessary to start the water diversion device to discharge the air in the pump room and the suction pipe. Absorb water continuously.

3.Regular maintenance of fire fighting pump

Although the regulations and rules clearly require that fire-fighting facilities and equipment should be regularly maintained, at present, fire-fighting water pumps cannot be regularly tested and run, and the pump body is stuck and rusted for a long time, so that it cannot play its due role in the event of a fire. On October 25, the Guangzhou Daily reported on the title of "Why 500,000 Fire Fighting Facilities Can't Drip Water", and disclosed that the fire fighting facilities in the Yide Road Comprehensive Market in Yuexiu District could not operate normally during a fire due to lack of maintenance, causing huge losses. . Therefore, we recommend that the specifications require the use of programmable logic controllers (PLCs) in the fire fighting pump to control the pump units, to achieve regular trial operation of the fire fighting pump when they are standby, and to start automatically when fighting fires, thus effectively eliminating the critical moments of fire fighting pump Unusable situation.

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