Electromagnetic self-closing valve

Abstract

The invention provides an electromagnetic self-closing valve. The electromagnetic self-closing valve is mainly characterized in that the waist portion of the interior of a valve cover is provided with an annular soft magnetic sheet, and the upper portion of the interior of the valve cover is provided with an electromagnetic coil and a support of the electromagnetic coil; an iron core is inserted into the middle of the support in a penetrating mode, the upper end of the iron core is in series connection with a carrying handle through a screw, the lower end of the iron core is closely connected with a pull rod, the end surface of the bottom of the pull rod is buckled with a membrane with a buckle, and an annular magnet is tightly fastened on the upper portion of the pull rod. According to the electromagnetic self-closing valve, when the valve is opened, normal output of gas is kept through the self gas pressure in a gas pipe network, and the valve is automatically closed when the pressure is dropped due to the fact that the pipe network gas is suddenly stopped; before gas supplying is recovered, a gas company does not need to send a person to visit a house to give notification, the gas can be supplied, and therefore labor is also saved; when gas leakage occurs, an alarm sends out an alarm sound, and the valve is automatically closed. The electromagnetic self-closing valve has the advantages that the structure is simple, the safety and reliability are achieved, and automatic close-distance control is easy to achieve due to the fact that the valve is connected with control equipment such as the alarm.

Description

technical field

[0001] The invention relates to a pipeline gas valve, in particular to an electromagnetic self-closing valve. Background technique

[0002] With the widespread popularization of urban gas applications, various gas accidents are also on the rise, causing huge casualties and losses to the safety of residents' lives and properties. In order to reduce the occurrence of gas accidents, there are generally two types of safety precautions commonly used in indoor installations: one is a mechanical overcurrent self-closing valve, which mainly uses the gas pressure of the gas pipeline network itself to maintain the normal output of gas, When the pipe network suddenly stops gas, the self-closing valve loses pressure and automatically closes under the action of spring or magnetic force, which can avoid the trouble of sending people to the door to notify the user to close all valves before gas supply; but this self-closing valve is harmful to gas The micro-leakage will no...

Examples

Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Such as figure 1 , figure 2 As shown, the waist in the bonnet 2 is provided with an annular soft magnetic sheet 7, and the top is provided with an electromagnetic coil 3 and its support 4; an iron core 6 is interspersed in the middle of the support, and the upper end of the iron core is connected in series with the handle 9 by a screw 12. The lower end of the core is closely connected to the pull rod 5 , the bottom end surface of the pull rod is fastened with the buckle diaphragm 10 , and the ring magnet 8 is fastened on the top of the pull rod 5 . The coil support 4 also plays a position-limiting role when the valve is opened. The ring magnet 8 is located between the coil support 4 and the ring soft magnetic sheet 7, and moves up and down with the pull rod 5 during the valve switch process. The pull rod 5 is made of non-magnetic material, an...

technical field

[0001] The invention relates to a pipeline gas valve, in particular to an electromagnetic self-closing valve. Background technique

[0002] With the widespread popularization of urban gas applications, various gas accidents are also on the rise, causing huge casualties and losses to the safety of residents' lives and properties. In order to reduce the occurrence of gas accidents, there are generally two types of safety precautions commonly used in indoor installations: one is a mechanical overcurrent self-closing valve, which mainly uses the gas pressure of the gas pipeline network itself to maintain the normal output of gas, When the pipe network suddenly stops gas, the self-closing valve loses pressure and automatically closes under the action of spring or magnetic force, which can avoid the trouble of sending people to the door to notify the user to close all valves before gas supply; but this self-closing valve is harmful to gas The micro-leakage will no...

Examples

Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Such as figure 1 , figure 2 As shown, the waist in the bonnet 2 is provided with an annular soft magnetic sheet 7, and the top is provided with an electromagnetic coil 3 and its support 4; an iron core 6 is interspersed in the middle of the support, and the upper end of the iron core is connected in series with the handle 9 by a screw 12. The lower end of the core is closely connected to the pull rod 5 , the bottom end surface of the pull rod is fastened with the buckle diaphragm 10 , and the ring magnet 8 is fastened on the top of the pull rod 5 . The coil support 4 also plays a position-limiting role when the valve is opened. The ring magnet 8 is located between the coil support 4 and the ring soft magnetic sheet 7, and moves up and down with the pull rod 5 during the valve switch process. The pull rod 5 is made of non-magnetic material, an...

Images