Electromagnetic quick shut-off valve
A shut-off valve, electromagnetic technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problem of valve core rebound, and achieve the effect of avoiding valve core rebound and quick response.
Active Publication Date: 2019-02-26
CHONGQING MING SHIELD ELECTROMAGNETIC VALVE
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Problems solved by technology
[0003] The present invention intends to provide an electromagnetic quick shut-off valve to solve the problem of the valve core bouncing back when the normally open shut-off valve cuts off the pipeline passage in the prior art
Method used
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Embodiment Construction
[0015] according to figure 1 and figure 2 As shown, the electromagnetic quick shut-off valve in the embodiment of the present invention includes a valve body, and the valve body includes a control cylinder 1 and a shut-off valve 3 connected through a valve cover 2. There is a valve stem 13 in the valve body, and the valve stem 13 is controlled from the control cylinder. 1 extends to the cut-off valve 3, the flow channel in the cut-off valve 3 is provided with a valve core 31 and a valve seat 32 that cooperate with each other, the valve core 31 is connected with the valve stem 13, and the valve stem 13 includes a first groove 131. The second groove 132. The control cylinder 1 is provided with an anti-rebound device and an electromagnetic release device in sequence along the axial direction of the valve stem 13. The electromagnetic release device includes a dynamic lock cylinder 121 and a first return spring provided on the dynamic lock cylinder 121. 1. The coil 122 wound outs...
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The invention discloses an electromagnetic rapid cut-off valve. The problem that in the prior art, when a normally open type cut-off valve cuts off a passage of a pipeline, the valve core rebounds is solved. The electromagnetic rapid cut-off valve comprises a valve body, wherein the valve body comprises a control cylinder and a cut-off valve which are connected through a bonnet; a valve rod is arranged in the valve body; a first groove and a second groove are formed in the valve rod; an electromagnetic release device is arranged on the control cylinder and comprises a moving lock core and a first reset spring arranged on the moving lock core; one end of the moving lock core can be engaged with a second groove of the valve rod; a second reset spring is arranged between the valve rod in the cut-off valve and the bonnet; an anti-rebound device is also arranged on the control cylinder and comprises a cavity leading to the valve rod straightly; an anti-rebound lock core and a pushing spring are arranged in the cavity; the anti-rebound lock core is sleeved with the pushing spring; an end cover is arranged at one end, far from the valve rod, of the cavity; the anti-rebound lock core is sleeved with the end cover, and one end of the pushing spring is connected with the end cover; and one end of the anti-rebound lock core can be engaged with the first groove of the valve rod. The electromagnetic rapid cut-off valve is swift in response, safe and efficient.
Description
technical field [0001] The invention relates to the technical field of valves, in particular to an electromagnetic rapid cut-off valve. Background technique [0002] A normally open cut-off valve must be installed on the fuel pipeline. In the event of a fire in the fuel pipeline that requires emergency closure of the pipeline, the passage of the fuel pipeline can be quickly cut off to prevent the situation from expanding. However, many normally open shut-off valves in the prior art are powered by pneumatic or hydraulic pressure, and the response is not fast enough. Although some normally open shut-off valves respond quickly through a mechanical closing device, when the valve core and the valve seat are quickly closed, a strong force is generated. The impact force often causes the valve core to rebound, which cannot cut off the gas pipeline passage quickly and completely, and will also aggravate the loss of the valve core and the contact point of the valve seat. Contents of...
Claims
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IPC IPC(8): F16K1/00F16K1/32F16K1/42F16K31/06F16K35/06
CPCF16K1/00F16K1/32F16K1/42F16K31/06F16K35/022
Inventor 朱红春
Owner CHONGQING MING SHIELD ELECTROMAGNETIC VALVE