Spray nozzle opened through action of heat sensitive element

Abstract

The invention discloses a spray nozzle opened through action of a heat sensitive element. The spray nozzle comprises a frame and is characterized in that a pre-tightening screw and a sealing seat arerespectively arranged on the top and bottom of the frame; a lever component is arranged between the pre-tightening screw and the sealing seat and comprises a support, a balance frame, a steel ball, agasket, and a fusible alloy; the support and the balance frame are braced each other through the steel ball; the fusible alloy is embedded at the bottom of the support and is pressed by the steel ball; the bottom end of the balance frame is pressed against and blocks the steel ball; and the top of the frame on the pre-tightening screw is fixedly connected to a splash box by a bolt. By arranging the lever component in the frame, when the fusible alloy is melted by the heat, the steel ball loses supporting force and sinks, and then the balance frame pressed against the steel ball loses pressureforce and is ejected upwards, so that the heat sensitive element acts, and the spray nozzle sprays water. The heat sensitive element has simple and reasonable action structure, stable structure intensity, and high using safety performance and avoids mistaken spraying or pre-spraying.

Description

technical field [0001] The invention relates to a spray head, in particular to a spray head with the action of a heat sensitive element. Background technique [0002] With the continuous improvement of fire-fighting facilities in the construction field, fire-fighting sprinklers are used more and more widely. This patent involves fire-fighting sprinklers including: sprinklers, early suppression and rapid response (ESFR) sprinklers, sprinklers with expanded coverage, household sprinklers, and closed water sprinklers. Fog nozzles, closed water curtain nozzles, fire control nozzles for special applications, sprinklers for non-warehouse high-clearance places. As the terminal product of the automatic sprinkler system, the fire sprinkler plays a key role in the automatic sprinkler system and is directly related to the fire extinguishing effect of the automatic sprinkler system. When a fire occurs, the ambient temperature in the area rises rapidly, and when it reaches a certain ope...

AI Technical Summary

Problems solved by technology

The action of welded structure heat sensitive elements is more common, but the action of welded structure heat sensitive elements has the problem of uneven structural strength after welding due to problems such as welding process and personnel technology; in addition, the pre-tightening force of the nozzle installation will also affect the welding The strength of the component, the action of the welded structure heat-sensitive element is in use, and its welding strength will be affected and reduced with the increase of the ambient temperature. At the same time, the working pressure during use will also act on the heat-sensitive action element through the principle of leverage. , thus affecting the operating temperature of the nozzle, resulting in mis-spraying or early-spraying of the nozzle, resulting in economic losses

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