Foam fire extinguishing agents are based on the current use of fire-fighting foam liquids, and found problems that are prone to occur during use: the mixing ratio of foam liquid and water is inconsistent. For example, 3% foam fire extinguishing agents are used as 6% fire extinguishing agents, and the surface tension is increased and reduced The fluidity of the foam makes it take longer for the foam extinguishing agent to reach the designated location, which affects the fire fighting and rescue work.
The mixed use of foam fire extinguishing agent, in order to make the foam fire extinguishing agent can be stored and used effectively, various ingredients such as different stabilizers are added. In the mixing ratio of the foam fire extinguishing agent, since the additives may be cationic or anionic, they are very easy to interact and destroy the original foam liquid.
The foam mixing ratio does not match. The foam liquid can be mixed with water to form a foam mixture. The foam ratio mixing device is the main equipment in the air foam fire extinguishing system to absorb and transport the foam liquid, which can mix water and foam in proportion. Different types of foam liquids have different mixing ratios, so the ratio mixer is generally adjustable. At present, the mixing ratio of foam extinguishing agent used by our fire forces is 0.10% to 19%. However, in the process of use, the operator did not pay attention to the calibrated mixing ratio of the foam liquid to adjust the mixing ratio of the proportional mixer in time, resulting in poor foaming effect. Okay, waste extinguishing agent. In addition, the foam proportional mixer used by the fire forces is divided into ring pump type, pipeline type, pressure test and other forms according to the structure, and it is divided into manual and automatic adjustment modes. Especially the manually adjusted foam ratio mixer should be adjusted in time according to the required foam liquid mixing ratio and the flow rate of the foam mixture on site.
Foam extinguishing agent manufacturers stated that they should strengthen firefighter training in actual use, and choose extinguishing agents reasonably to avoid improper use of foam extinguishing agents that may reduce the fire extinguishing effectiveness of the foam extinguishing agent and delay the golden opportunity for fire fighting. If there is a fire in a warehouse with chemical raw materials, the use of high-expansion foam extinguishing agent can quickly foam and fill the warehouse to achieve the purpose of extinguishing fire. In addition, the high-expansion foam contains a lot of air, which can provide oxygen to the wounded trapped in the warehouse.