Device for preparing air water-based foam based on pneumatic mode

Abstract

The invention discloses a device for preparing air water-based foam based on a pneumatic mode. The device comprises a tank body, an air bag, a foam liquid raw material bag, a pressure gauge, an air inlet pipe, a three-way joint, a liquid injection pipe, a liquid outlet pipe, a regulating valve, an air compressor, an air outlet pipe, a mixer, a foam discharge pipe, a one-way valve, an electric heating wire, rotating shafts, blades and a transparent observation window. The beneficial effects are that: air and foam liquid raw materials are injected into the tank body through the air bag and the foam liquid raw material bag which are arranged inside the tank body, so that direct contact with the inner wall of the tank body is avoided, and corrosion to the inner wall of the tank body can be avoided; and the three rotating shafts are arranged in the mixer side by side, and the blades are connected with the rotating shafts and are rotatably arranged in the mixer, so that the air and foam liquid raw materials entering the mixer can be stirred and mixed, and the preparation efficiency of the air water-based foam is further improved.

Description

technical field [0001] The invention relates to a preparation device for air-water foam, in particular to a device for preparing air-water foam based on a pneumatic method, and belongs to the technical field of fire-fighting equipment. Background technique [0002] The development of foam fire extinguishing technology first started in the United States in the 1910s. Subsequently, with the development of the surface chemical industry, the research on foam fire extinguishing technology has gradually been valued by experts and scholars at home and abroad, and has developed rapidly. In 1949, Brady published the first public reports on the properties of aqueous foams. In the 1950s, the United Kingdom, the former Soviet Union, the former West Germany, Japan and other countries successively carried out research work in this area and achieved certain results. In 1956, Jacobi and others publicly reported the application of water-based foam to fire protection for the first time. fire...

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Problems solved by technology

[0003] For the existing water-based foam preparation devices, firstly, three-power or double-power is mostly used, the process is complicated, the maintenance and inspection process is relatively complicated, and it is inconvenient to apply it on the spot at the same time, and it is difficult to promote the popularization and application of foam technology. 2. When preparing air-based water-based foam, the air and foam raw materials are often mixed together, but the mixed solution cannot be further stirred and mixed, so the preparation efficiency of water-based foam is low

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