Electric locking device for water getting valve of outdoor fire hydrant

Abstract

The invention relates to fire hydrants, in particular to an electric locking device for a water getting valve of an outdoor fire hydrant. The electric locking device comprises a bidirectional self-hold electromagnet, a ratchet wheel and a pawl. The bidirectional self-hold electromagnet is installed on a valve body of the fire hydrant through an electromagnetic support. The ratchet wheel is installed on a valve rod of the fire hydrant. The pawl matched with the ratchet wheel is installed on the electromagnet support through a pawl shaft. The pawl shaft is further provided with a pawl positioning spring. One end of the pawl positioning spring is connected with the pawl, the other end of the pawl positioning spring is connected with an electromagnet shaft on the bidirectional self-hold electromagnet, and the electromagnet shaft is further provided with an annular magnet. A magnetic-control feedback switch is correspondingly arranged at the tail end of the electromagnet shaft. When the electromagnet shaft approaches the magnetic-control feedback switch, the magnetic-control feedback switch is turned on, and when the electromagnet shaft gets away from the magnetic-control feedback switch, the magnetic-control feedback switch is shut off. When the bidirectional self-hold electromagnet is electrified, the pawl acts to clamp the ratchet wheel so that the valve rod cannot rotate, and a valve is locked. The electric locking device is simple in structure, convenient to operate and high in practicability, and no vulnerable and consumable device exists.

Description

technical field [0001] The invention relates to a fire hydrant, in particular to an electric locking device for an outdoor fire hydrant water intake valve. Background technique [0002] At present, outdoor fire hydrants are generally equipped with a valve inside, one end of the valve is connected to the water supply pipeline, and a valve stem is connected to the valve core, which is opened and closed by rotating the valve stem. The valve stem of the existing fire hydrant is placed on the top of the fire hydrant and manually rotated by a wrench. Objectively speaking, anyone can open the fire hydrant to get water. The installation, maintenance, and management of fire hydrants in my country are undertaken by water supply companies. In addition to meeting the requirements for fire emergency water intake, water supply companies will also authorize some fire hydrants to supply water to users such as municipal construction, greening maintenance companies, and road maintenance compa...

AI Technical Summary

Problems solved by technology

[0003] In view of the above technical problems, the present invention provides an electric locking device for the water intake valve of an outdoor fire hydrant, which solves the problems of illegal water intake and water theft caused by the lack of effective management of existing outdoor fire hydrants

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