Large-flow compressed air foam system

A technology of compressed air foam and large flow, applied in the direction of fire rescue, etc., can solve the problems of inability to meet the needs of large-scale fire fighting, fire trucks cannot work, and the foam pump filter screen is blocked. blocking effect

Inactive Publication Date: 2017-12-29
NANJING DEWOKE AUTOMATION
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  • Abstract
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Problems solved by technology

[0003] The existing CAFS technology uses a foam pump to transport the foam liquid. Since the B-type foam liquid, especially the fluoroprotein foam liquid, has high viscosity and many impurities, it is easy to cause the filter screen of the foam pump to be blocked; if the fire-fighting operation is not rinsed in time, The dryness of the residual foam liquid will cause the interference of the matching surface in the foam pump, resulting in stalling
The above situation will cause the

Method used

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[0019] Below in conjunction with the accompanying drawings and specific embodiments, the present invention will be further clarified. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. Modifications of equivalent forms all fall within the scope defined by the appended claims of this application.

[0020] like figure 1 As shown, a large-flow compressed air foam system includes: a water inlet 2, a water pump 1 and a Venturi tube 4 connected to the water inlet 2, a metering valve 8 connected to the Venturi tube 4, and a metering valve 8 The foam liquid flowmeter 7 and the foam liquid tank 5 connected with the foam liquid flowmeter 7; the water pump 1 is connected with the main flowmeter 9, the one-way valve 10 and the mixer 12 in turn through the pipeline; the mixer 12 is connected with the air The compressor 11, the fire monitor 16, the first fire water gun 17 and the second fire ...

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Abstract

The invention discloses a large-flow compressed air foam system. The large-flow compressed air foam system comprises a water inlet (2), a water pump (1), a Venturi tube (4), a metering valve (8), a foam liquid flow meter (7) and a foam liquid tank (5), wherein the water pump (1) and the Venturi tube (4) are connected with the water inlet (2), the metering valve (8) is connected with the Venturi tube (4), the foam liquid flow meter (7) is connected with the metering valve (8), and the foam liquid tank (5) is connected with the foam liquid flow meter (7); and the water pump (1) is sequentially connected with a main flow meter (9), a check valve (10) and a mixer (12) through pipelines, and the mixer (12) is separately connected with an air compressor (11), a fire-fighting monitor (16), a first fire-fighting water gun (17) and a second fire-fighting water gun (18). The large-flow compressed air foam system is reasonable in structural design, convenient to use, capable of meeting the requirement of a large-flow B-type compressed air foam system, high in fire-fighting operation capacity, good in fire-extinguishing performance, capable of preventing plugging of a filter screen of a foam pump, long in service life and high in practicability.

Description

technical field [0001] The invention relates to fire fighting equipment, in particular to a large-flow compressed air foam system. Background technique [0002] Compressed air bubble system (CAFS) is used in the field of fire protection, which can fully refine and foam the foam mixture. The foam contains a large amount of high-pressure air, which enhances the penetration ability and adhesion ability of the fire extinguishing agent, and its fire extinguishing effect is higher than that of pure water. 10 times or more. Because the foam mixture contains compressed air, the water consumption is small, and the fire fighting operation time is long; the weight of the hose can be reduced by more than 50% during operation, and the fire fighting mobility is high. The basic principle of the existing CAFS technology is: use a water pump and a foam pump to mix water and foam liquid in proportion to form a foam mixture, and then inject high-pressure compressed air into the mixing chamber...

Claims

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Application Information

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IPC IPC(8): A62C5/02A62C31/12
CPCA62C5/02A62C31/12
Inventor 马小叶葛志勇
Owner NANJING DEWOKE AUTOMATION
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