Anti-spreading fire hydrant

Abstract

The invention relates to an anti-spreading fire hydrant which is used for preventing poisoning and dirty substance throwing. The anti-spreading fire hydrant comprises a fire hydrant main body and a fire hydrant body arranged on the fire hydrant main body, a tangential belt connector is formed in the upper portion of the fire hydrant body, an end cover covers the tangential belt connector, transmission shafts, valve flaps and guide rods are sequentially arranged inside the fire hydrant main body and the fire hydrant body from top to bottom, and the valve flaps and an inner runner of the fire hydrant main body are provided with valve seats. The anti-spreading fire hydrant is characterized in that the anti-spreading fire hydrant further comprises driving frames and springs, T-shaped threaded rods are arranged at the lower portions of the transmission shafts and are fixedly connected with the driving frames, the lower ends of the T-shaped threaded rods extend into the valve flaps to perform guiding, the springs sleeve the outside of the T-shaped threaded rods, and the upper ends and the lower ends of the springs are connected with the driving frames and the valve flaps. Compared with the prior art, the anti-spreading fire hydrant has the advantages that the fire hydrant is simple in structure, low in cost and reliable in safety, spreading of foreign matters can be prevented and the like.

Description

technical field [0001] The invention relates to the field of fire protection, in particular to an anti-diffusion fire hydrant. Background technique [0002] In the field of fire protection, the outdoor fire hydrant is the most widely used national standard product. It has a fire engine water intake and two hand strap connections. The internal disc shaft is a cut-off structure. Once there is a fire, open the end cover and connect the hose The belt is rotated to open the drive shaft at the top of the fire hydrant and lift the valve disc away from the valve seat. The water in the pipe network is pushed by the pressure to spray out the water gun at the end of the hose to extinguish the fire. After extinguishing the fire, close the valve disc to cut off the water flow, remove the water hose connection, cover the end cover, and the extinguishing of the fire is completed. [0003] However, if the end cover is opened, dirt and poison are put into the plug body and then the end cove...

AI Technical Summary

Problems solved by technology

[0003] However, if the end cover is opened, dirt and poison are put into the plug body and then the end cover is covered, and then the valve flap will be opened to generate water to dissolve the dirt and poison and spread into the pipeline. The net is separated from the domestic water pipe network, so if there is no diversion preventer, the contaminated fire water will quickly spread to the domestic pipe network, which will bring serious hidden dangers to safety

[0004] Chinese patent CN20612819u discloses an outdoor fire hydrant, which includes a water flow switch installed in the hydrant body and a cock cap set on the hydrant body. The water flow switch is provided with a Hall switch sensor and internal related configurations. This invention The main function of the fire hydrant is to allow management personnel to obtain relevant information about fire hydrants, and quickly take measures to minimize water waste, but it does not have the function of preventing foreign matter from spreading from the upper part to the lower part when it is turned on and there is no water flow

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