Explosion-proof type mechanical switching-off device for gas emergency switching off

Abstract

The invention discloses a flameproof type mechanical disconnector for emergency cutting of gas, which comprises an electromagnetic lock, a torsion spring clamp, a support plate, a hoop and a connecting piece thereof. When the ball valve is opened, the lock head of the electromagnetic lock is stuck in the lock hole of the torsion spring clamp. The electromagnetic lock receives the pulse electric signal, opens instantly, and the lock head retracts. The torsion spring clip loses the lock end restriction, and under the action of the torsion spring, the torsion spring clip drives the ball valve handle to rotate and close. After the danger is removed, manually open the ball valve, and when the handle is turned to the closed position, the head of the electromagnetic lock is just stuck in the lock hole of the torsion spring clamp, and the torsion spring is compressed again, forming a self-lock between the torsion spring clamp and the electromagnetic lock. The coil part of the electromagnetic lock adopts the casting process for explosion-proof treatment. The invention avoids the problems of the existing mechanical cutters such as gear jamming and motor burnout, and does not affect the normal manual use of the ball valve, bringing convenience to users. The product itself has also been subjected to explosion-proof treatment in the form of potting, eliminating the potential safety hazard of the product itself.

Description

technical field [0001] The invention relates to an explosion-proof gas emergency cut-off mechanical cut-off device, which is mainly used to close a ball valve when an emergency occurs during the use of gas, so as to avoid losses and potential safety hazards caused by gas leakage. Background technique [0002] Gas leakage is a major safety hazard in the use of household and industrial gas, and a gas emergency cut-off device must be equipped when using it. Generally, the alarm is used in conjunction with the gas solenoid valve. When the alarm detects gas leakage, it will give a pulse signal, and the solenoid valve will close the valve after receiving the pulse signal. However, the gas emergency cut-off device needs to be planned during the construction of the house, and the later installation is more complicated, and there are strict qualification requirements for the construction personnel, so the head of the household cannot install it by himself. Therefore, users often us...

AI Technical Summary

Problems solved by technology

In the production process, there are many parts, including gears, motors, micro switches and other parts, which will inevitably lead to very complicated processing and installation

During use, problems such as gear jamming and motor burning are likely to occur, and it is easy to bring safety hazards

At the same time, when the user manually opens the valve, it is necessary to remove the U-shaped card or pull down the pull ring, which is inconvenient to operate

When gas leaks, the motor itself may become a source of explosion, posing a great safety hazard

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