There are many fire monitors installed on the fire truck, which are generally installed on the roof of the fire truck. They are installed in a vehicle-mounted way. There are many types and sizes of fire-fighting water cannons mounted on the fire truck. Let me tell you about it today. What are the types of fire truck water cannons?
1. Ordinary fire truck water cannon, this water cannon is installed on the top of the fire truck, and its main function is to spray water. At present, there are as many water cannons installed on the fire truck as possible.
2. Divided into various calibers, and some fire trucks use water cannons of different calibers and styles.
3. Fire truck foam cannon, this water cannon is a water cannon that uses foam as a medium, and mainly uses foam as a medium.
4. Fire truck dry powder cannon, this water cannon uses dry powder as a medium, and a dry powder ejection device is installed on the fire truck.
How to fill the foam fire truck with foam liquid
There are two ways to add foam liquid to the foam liquid tank of the foam fire truck: one is to add it directly from the manhole; the other is to use the compressed air of the original vehicle to hydraulically inject the foam in the foam liquid tank.
The operation steps of this method are as follows: connect the suction pipe, the inflation nozzle, the hose and the joint for tire inflation; start the engine to make the compressed air in the air storage tank of the fire truck have sufficient pressure; first close the air foam ratio and mix to open the inlet valve to the foam tank. Then, engage the inflator hose connector with the inflation nozzle to allow compressed air to enter the foam tank. Therefore, the foam liquid enters the foam liquid tank under the action of compressed air. When the foam liquid in the barrel is sent out by pressure, the air release valve of the air storage cylinder and the liquid inlet valve of the foam liquid tank must be closed immediately to prevent a large amount of air from filling. into the foam.
The principle and method of using the foam mixing device of the fire truck
The foam mixing device of the fire truck is installed on the pump body, including the water line from the water outlet line. Ball valve, liquid inlet pipe, regulating valve, three-way pipe, liquid outlet hose, etc.
Working principle: When the pressure of the water pump passes through the pressure pipe. When the cock, the nozzle entering the mixer, and the pressure water are ejected through the nozzle, a negative pressure is formed in the mixing chamber, and the foam liquid in the foam tank passes through the liquid inlet pipe. The quantitative holes of the ball valve and the regulating valve are automatically sucked into the mixing chamber, and after mixing with the water sprayed from the nozzle in the mixing chamber, it flows to the water pump through the injection pipe, the liquid outlet pipe and the elbow. Most of it is sent to the spray equipment to form foam and sprayed out, and a small part enters the mixer to continue the operation of the ring pump.
How to use: first open the water injection product of the foam tank, then press the handwheel of the mixer to match the foam injection equipment used, adjust the foam flow to the position of the positioning hole, and then open the cock on the pressure water pipe and the ball valve of the liquid inlet pipe, According to the working pressure of the foam injection equipment, adjust the pressure of the water pump, the mixer provides the mixed liquid in proportion, and enters the water pump from the liquid outlet pipe, and then provides the foam liquid to the foam injection equipment. , put out the fire.