Gas valve capable of being cut off emergently

By introducing an electric cylinder and a buffer anti-collision mechanism into the gas valve, the valve can be quickly shut off in emergency situations of power failure, solving the problem of time-consuming and labor-intensive manual operation in the prior art, and improving safety and valve durability.

CN224135205UActive Publication Date: 2026-04-17BAODING LANDE MASCH MFG CO LTD
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Patent Information

Application Number
CN202521112451.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-03
Publication Date
2026-04-17
Estimated Expiration
2035-06-03

AI Technical Summary

Technical Problem

Existing shut-off valves require manual operation in emergency situations such as power outages, which is time-consuming and labor-intensive, and poses a threat to the operator's life, especially in situations such as fires.

Method used

An emergency shut-off gas valve was designed. An electric cylinder drives the valve stem to rise and fall. It is equipped with a compression spring and a buffer anti-collision mechanism. When the power is cut off, the compression spring is restored by pulling out the pin, which drives the valve stem to fall quickly, so as to achieve a tight closure between the valve core and the valve hole.

Benefits of technology

Even in the event of a power outage, the valve can still be quickly shut off, avoiding the time-consuming and laborious manual operation, improving safety, reducing instantaneous impact force, and preventing valve damage.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a gas valve capable of being cut off emergently, which is characterized in that a valve body is provided with a positioning frame, the positioning frame is provided with a limiting barrel for a valve rod to pass through, the upper end of the part of the valve rod outside the valve body is provided with a stop dog, and a compression spring sleeved on the valve rod is arranged between the stop dog and the limiting barrel; a vertically-downward electric cylinder is further installed at the top of the positioning frame, a spline shaft is arranged at the telescopic end of the electric cylinder, an insertion cavity allowing the spline shaft to be inserted is formed in the valve rod, the valve rod and the spline shaft are fixed through a plug pin, and the valve rod and the spline shaft are each provided with a through hole allowing the plug pin to penetrate through. In emergency, the bolt can be pulled out, the compression spring performs elastic recovery, and the valve rod is driven to quickly descend, so that the valve core and the valve hole are tightly closed, and the quick cut-off effect is achieved; in this way, cutting-off can still be conducted quickly under the power-off condition.
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