Automatic spraying fire-fighting lance

Abstract

The invention discloses an automatic spraying fire-fighting lance. The automatic spraying fire-fighting lance comprises an inner pipe and an outer pipe which are arranged longitudinally, wherein the outer pipe is sleeved outside the inner pipe; the inner pipe and the outer pipe can rotate relatively; high pressure water current enters the inner pipe in the embodiment from a fire-prevention pipe; vanes in the inner pipe rotate under the impact of the water current; a rotating shaft fixed with the vanes also rotates, and drives a first gear to rotate, which makes a second gear move on the firstgear backwards and forwards; consequently, the rotation of the outer pipe in a radial direction is realized; and after impacting the vanes, the water current enters a pipe cap and then is sprayed outfrom a nozzle. Because the outer pipe can rotate in the radial direction backwards and forwards, a sprayed water column can change directions, and the spraying range can be broader. Thus, the automatic spraying fire-fighting lance not only can spray water without manual operations when a fire happens, but also can automatically change spraying angles.

Description

technical field [0001] The invention relates to a fire-fighting apparatus, in particular to a fire-fighting water gun capable of automatic spraying without manual operation. Background technique [0002] The existing fire-fighting equipment that does not require manual operation is an automatic sprinkler system installed on the ceiling of a building room. This automatic sprinkler system is generally designed by the water supply and drainage designer and needs to be installed when the building is decorated. This kind of automatic sprinkler system is expensive and suitable for rooms with suspended ceilings. It is generally used in densely populated places such as hospitals and hotels. However, some flammable and explosive workshops are usually only equipped with some fire hydrants due to lack of economic conditions and suspended ceilings. But these fire hydrants need to be manually operated. If a fire occurs in an unmanned state or a sudden explosion (such as the explosion of ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned defects, the present invention provides an automatic spraying fire-fighting water gun, which can not only automatically spray and extinguish the fire without manual operation when a fire occurs, but also automatically change the spraying angle.

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