Industry News

The fire water pump is one of the important equipment on the Isuzu fire truck. It is responsible for providing water sources and delivering water to the fire scene, playing a key role in fire extinguishing and rescue. So, how does a fire truck pump work? The following will introduce the principle and working process of the fire truck water pump.

1. Principle of fire truck water pump:

The fire truck water pump mainly relies on the power of the driving equipment (such as the engine), and converts the power into the rotational force of the water pump through mechanical transmission, thereby realizing the suction and injection of water. Common fire truck water pumps mainly include centrifugal pumps and positive displacement pumps.

The centrifugal pump is a commonly used type of fire truck water pump. Its working principle is to use centrifugal force to suck water into the pump body from the water inlet, and then generate centrifugal force through the rotating impeller to push the water out of the pump body and send it to the injector or water spray gun, etc. at. The centrifugal pump has the characteristics of simple structure, smooth operation and large flow rate, and is suitable for fire extinguishing work of fire trucks.

Positive displacement pump is another common type of fire truck water pump. It changes the volume of the pump chamber through the movement of working components such as pistons or gears, thereby achieving water suction and injection. The positive displacement pump has the characteristics of stable pressure and adjustable flow, and is suitable for some special fire extinguishing work.

2.The working process of the Isuzu fire truck water pump can be divided into three stages: water absorption, water pressure and water spraying.

a. Water absorption stage: The fire truck water pump first needs to absorb water from the water source to form a certain inlet pressure. During the water absorption stage, the water pump introduces water into the pump body through the water inlet, and then uses the centrifugal force generated by the rotation of the impeller in the pump body to push the water to the water outlet and form a certain outlet pressure.

b. Pressure water stage: When the fire truck water pump successfully absorbs water, the water pump begins to pressurize water. During the water pressure stage, the water pump further increases the water pressure by further increasing the rotational speed or changing the movement mode of the working components to meet the needs of fire trucks for fire extinguishing work.

c. Water spray stage: When the water pump increases the water pressure to a certain level, the water will be sprayed out through an injector or water spray gun to achieve the purpose of fire extinguishing and rescue. The water spraying stage is the last stage of the fire truck's water pump work and is also a key link for the fire truck to implement fire-fighting operations.

3. Characteristics and applications of fire truck water pumps:

a. High pressure and high flow: Fire truck water pumps need to have high water outlet pressure and flow to meet the needs of fire extinguishing work.

b. Stable and reliable: Fire truck water pumps need to have stable and reliable working performance to ensure normal operation in emergencies.

c. Lightweight and flexible: The fire truck water pump needs to be light and flexible, making it easier for firefighters to carry and operate, and improving the efficiency of fire extinguishing and rescue.

d. Multi-functional application: Fire truck water pumps can not only be used for fire extinguishing, but also can be used in drainage, water supply, etc. And have a wide range of applications.

To sum up, the fire truck water pump is one of the most crucial equipment in the fire truck. Its working principle is to transfer power to the water pump through the driving equipment to realize the functions of water suction, water pressure and water spraying. The fire truck water pump has the characteristics of high pressure and high flow, stability and reliability, lightness and flexibility, and multi-functional application, which provides important support and guarantee for firefighting work.