Fire-fighting sprinkler head

Abstract

The invention discloses a fire-fighting sprinkler head. The fire-fighting sprinkler head comprises a body and a choke plug. A base is arranged on the lower end of a frame of the body, a splashing disc is arranged on the lower end of the base, the choke plug is in seal connection with the water outlet end of the body, a releasing device is arranged at the position, between the choke plug and the base, on the body, and comprises a supporting plate, one end of the supporting plate is connected with the lower end of the choke plug, the other end of the supporting plate is rotatably connected with a pressing plate, the end, close to the choke plug, of the supporting plate is connected with one end of a glass ball, the other end of the glass ball is connected to the end, away from the supporting plate, of the pressing plate, the pressing plate is supported by an adjusting screw screwed in the base, the eccentric distance exists between the rotating center on the connecting position of the supporting plate and the pressing plate and the center of the axis of the adjusting screw. The advantages of being stable in bearing, sensitive in temperature inducing, high in trigger speed, and convenient to assemble are achieved.

Description

technical field [0001] The invention relates to the technical field of fire-fighting equipment, in particular to a fire-fighting sprinkler head. Background technique [0002] In the fire extinguishing equipment, the fire sprinkler is the main device, which directly faces the fire scene. The existing fire sprinkler mainly uses glass balls (tubes) or fusible alloys as the sensing temperature and trigger release elements. It is applicable to fire sprinklers, but in large flow fire sprinklers, due to the large diameter of the pipe, the pressure of the fire fighting fluid on the plug (also called the seal) on the body is strong, and the ordinary temperature-sensitive glass ball (tube) support structure It cannot be tolerated. If the diameter of the temperature-sensing glass bulb is increased, there will be a disadvantage of large heat capacity, poor temperature-sensing effect and slow response speed. Therefore, a structure using a support plate component force has been developed....

AI Technical Summary

Problems solved by technology

[0002] In the fire extinguishing equipment, the fire sprinkler is the main device, which directly faces the fire scene. The existing fire sprinkler mainly uses glass balls (tubes) or fusible alloys as the sensing temperature and trigger release elements. It is applicable to fire sprinklers, but in large flow fire sprinklers, due to the large diameter of the pipe, the pressure of the fire fighting fluid on the plug (also called the seal) on the body is strong, and the ordinary temperature-sensitive glass ball (tube) support structure It cannot be tolerated. If the diameter of the temperature-sensing glass bulb is increased, there will be a disadvantage of large heat capacity, poor temperature-sensing effect and slow response speed. Therefore, a structure using a support plate component force has been developed. For example, Patent No. 201320512164.3 discloses a fast Response nozzle, its fast response control component includes a triangular support balance body composed of a balance plate, a bracket plate and a temperature-sensitive glass ball. The upper end of the bracket plate is connected to the left end of the balance plate through a pin rotation. Leaning on the plug, the right side of the support plate is provided with a support connected to the support plate, the bottom end of the temperature-sensitive glass ball leans against the support through the temperature-sensitive glass ball seat, and the top of the temperature-sensitive glass ball It leans against the lower right end of the balance board, and the center of the top of the balance board leans against the positioning cone top of the splash plate, but the control assembly of this structure can only form a triangular support balance body after being assembled on the nozzle body , it still cannot form a stable component state before assembly, and it also has the disadvantage of difficult assembly

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