Fire extinguisher capable of being automatically turned and off for jet

Abstract

The invention discloses a fire extinguisher capable of being automatically turned on and off for jet. The fire extinguisher comprises a spray head, the spray head is sequentially divided into an installation cavity, a rotational flow cavity and a jet cavity from top to bottom, a flow blocking rotating mechanism is installed in the rotational flow cavity, a plurality of electromagnetic cavities areannularly formed outside the rotational flow cavity in the spray head, and each electromagnetic cavity is internally fixedly provided with an iron core. The fire extinguisher is connected in a threaded installation mode, the universality of the fire extinguisher is improved, the current generated between a rotating permanent magnet column and a coil is supplied to an acousto-optic alarm mechanismfor use, the warning capability and the safety of the fire extinguisher are improved, the normal work of the acousto-optic alarm mechanism is protected through a transparent annular flame retardant cover, a valve plug is automatically opened for extinguishing a fire and closed after the fire is extinguished through an automatic switch mechanism, and the self-control capability and the water resource saving capability of the fire extinguisher are improved. The service life of a heat-shrinkable metal rod is prolonged through the linear retention of a spring, and the work of the heat-shrinkablemetal rod is not disturbed through a valve element.

Description

technical field [0001] The invention relates to the field of fire-fighting equipment, in particular to a fire extinguisher with automatic switch spray. Background technique [0002] Fire refers to a catastrophic burning phenomenon that is out of control in time or space. Among various disasters, fire is one of the main disasters that most often and commonly threatens public safety and social development. In order to prevent fire, people design A variety of fire-fighting equipment has been introduced. Fire-fighting equipment refers to equipment used for fire extinguishing, fire prevention and fire accidents. Common fire-fighting equipment includes fire extinguishers, fire hydrants and fire sprinklers. [0003] Existing fire sprinklers are usually encapsulated in a glass container by an extremely sensitive heat-sensitive liquid. When the fire temperature is felt, the heat-sensitive liquid inside the glass container expands rapidly and the glass breaks, and the fire sprinkler s...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art that once the fire sprinkler head is activated, it cannot be automatically closed, which wastes a lot of water resources, and the activated fire sprinkler head cannot be used again, and a new fire sprinkler head needs to be replaced. Due to the disadvantage of increasing the cost of fire protection construction, a fire extinguisher with automatic switch spray is proposed

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