Automatic fuel gas cutoff device

Abstract

The invention relates to an automatic fuel gas cutoff device which comprises a circuit board, a control mechanism, a first valve body, a second valve body, an opening sliding sleeve, a magnetic ring,an energy storage spring, plugging pieces and a magnetic steel sliding block. The first valve body and the second valve body are provided with through holes; a check ring is arranged in the middle ofthe outer surface of the first valve body; the opening sliding sleeve is arranged on the left side of the check ring; the magnetic ring and the energy storage spring are arranged on the right side ofthe check ring; the magnetic steel sliding block and the plugging piece are arranged in the first valve body and can be attracted by the magnetic ring so as to move left and right along with the magnetic ring; when the opening sliding sleeve slides rightwards and pushes the magnetic ring to the preset position at the same time, the control mechanism executes a lock control action so as to preventthe magnetic ring from returning leftwards; and when the fuel gas needs to be cut off, a circuit board sends a signal to the control mechanism to execute an unlock control action so as to leftwards return the magnetic ring, and meanwhile, the plugging pieces seal the through holes. The automatic fuel gas cutoff device provided by the invention has the beneficial effects that the device is simple in structure, convenient to operate, and capable of being installed at an air outlet of a fuel gas main valve; and when in use, the fuel gas is communicated manually, and the device can be remotely controlled to cut off the fuel gas according to different situations, so that the accidents caused by fuel gas leakage are prevented.

Description

technical field [0001] The invention relates to the field of gas valves, in particular to a gas automatic cut-off device. Background technique [0002] At present, household gas stoves usually use natural gas in the form of pipelines or liquefied petroleum gas stored in tanks. No matter the natural gas in pipelines or liquefied petroleum gas, there is a manual master valve switch at the source to control the opening and closing of the gas. , and the gas usually passes through the gas hose and then enters the gas stove after it comes out of the source. During long-term use, gas leakage is often caused by the aging of the gas hose or the aging or extinguishment of the gas stove. Open the main valve and close the main valve after use to ensure safety. [0003] However, no matter how good the habit is, the user may forget to close the main valve after using the gas stove for many times in a long-term life. In addition to the above-mentioned users, there are still some users w...

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Problems solved by technology

[0003] However, no matter how good the habit is, the user may forget to close the main valve after using the gas stove for many times in a long-term life.

In addition to the above-mentioned users, there are still some users who do not have this good habit. Regardless of whether the gas is used or not, the main valve is always open. With the passage of time and the aging of the items, the probability of gas leakage risk will continue to increase.

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