Emergency shut-off valve
A shut-off valve, emergency technology, applied in the field of solenoid valves, can solve the problems of sparks, safety accidents, untimely, accurate, and reliable closing, and achieve the effects of avoiding safety accidents, closing the valve quickly, and closing the valve reliably.
Active Publication Date: 2012-07-04
重庆东方电磁阀厂
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Problems solved by technology
However, in use, it was found that the shutdown was not timely, accurate, and reliable, and sometimes sparks were generated, causing safety accidents
Method used
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Embodiment Construction
[0014] The present invention will be further described below in conjunction with the accompanying drawings.
[0015] see figure 1 and figure 2 An emergency shut-off valve is shown, including a valve cover 7 connected to the upper mouth of the valve body 18 by screws, a valve stem support sleeve 5 connected vertically to the center hole of the valve cover at the lower end, and a valve stem matched with the valve stem support sleeve. 2. Cooperate with the valve plate 11 connected to the lower part of the valve stem, the coil spring 10 set between the lower part of the valve cover and the upper part of the valve plate and set outside the middle part of the valve stem, set on the valve stem support sleeve and cooperate with the upper part of the valve stem The electromagnetic cut-off controller, the valve plate 11 corresponds / cooperates with the valve seat port 29 located in the middle of the valve body 18;
[0016] A guide rod 15 is connected with the connecting sleeve 14 that...
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The invention discloses an emergency shut-off valve. The valve comprises a valve body, a valve cover, a valve rod support sleeve, a valve rod, a valve plate, a spiral spring and an electromagnetic shut-off controller, wherein the spiral spring is arranged between the lower side of the valve cover and the upper side of the valve plate and sleeved outside the middle part of the valve rod; the electromagnetic shut-off controller is arranged on the valve rod support sleeve and matched with the upper part of the valve rod; and the valve plate corresponds to / is matched with a valve seat port on theinner middle part of the valve body. The valve is characterized in that: a guide rod is connected with a connecting sleeve which is connected to the lower end part of the valve rod in a matching way;the lower part of the guide rod is matched with the inner wall of a guide barrel which is arranged on and extends into the valve body; the lower part of the guide barrel is provided with an exhaust hole communicated with the cavity of the valve body; and the lower port of the guide barrel is provided with a sealing bolt. The valve has the advantages of rapid, correct and stable valve closing, time of less than 70 ms from the receiving of an electromagnetic signal to the movement of the valve plate to the valve seat, reliable valve closing, interval of less than 0.2 millimeters after the valveplate and the valve seat are closed in a matching way and capability of preventing a safety accident caused by friction sparks.
Description
technical field [0001] The invention relates to a solenoid valve, in particular to an emergency cut-off valve capable of preventing medium circulation or explosion flame propagation. Background technique [0002] For the sake of safety, an emergency shut-off valve must be installed in the pipeline conveying flammable and explosive gases. The existing emergency shut-off valve includes a valve body, a valve cover, a valve stem, a valve stem spring, a valve plate, a valve seat, a guide sleeve, and a handle. Cooperate with the electromagnetic cut-off controller. In the event of a power failure, the valve can be automatically closed to stop the gas supply. When the gas supply needs to be continued, the valve can be opened in the event of a power failure. However, in use, it was found that the shutdown was not timely, accurate, and reliable, and sometimes sparks were generated, causing safety accidents. Therefore, it needs to be improved. Contents of the invention [0003] ...
Claims
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IPC IPC(8): F16K17/00F16K31/06F16K1/32F16K1/38
Inventor 王树先
Owner 重庆东方电磁阀厂