Safe emergency release coupler

A kind of pull-off valve and safety technology, which is applied to safety valve, control valve, balance valve, etc., can solve the problems of poor consistency of pull-off valve pull-off force, inability to accurately control pull-off valve pull-off force, and inconvenient installation of pull-off valve. , to achieve the effect of easy installation

CN103644343AInactive Publication Date: 2014-03-19成都宇思纵科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-03-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a safe emergency release coupler which comprises a valve body (1), a screw plug (3) and a lower valve seat (4). The screw plug (3) is installed on the left portion of the valve body (1) through threads. The lower valve seat (4) extends into the valve body (1) from the right side. An O-type sealing ring (18) is arranged between the lower valve seat (4) and an annular protruding edge. A contact portion of the lower valve seat (4) and the screw plug (3) is sleeved with a sliding sleeve (2). A check ring A (16) installed in the sliding sleeve (2) is arranged between the lower valve seat (4) and the screw plug (3). A spring (11) is arranged between the sliding sleeve (2) and the screw plug (3). A one-way valve is arranged in a vent hole of the lower valve seat (4). The safe emergency release coupler has the advantages that the releasing force is controlled through deformation of the O-type sealing ring so that the releasing force of the safe emergency release coupler can be accurately controlled; the O-type sealing rings with different hardness degrees can be replaced so that the releasing force of the safe emergency release coupler can be adjusted through deformation, and installation is convenient.
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Description

technical field

[0001] The invention relates to the technical field of valves, in particular to a safety pull-off valve. Background technique

[0002] In order to avoid the leakage of compressed natural gas caused by driving the car before the gas filling gun is removed due to the negligence of the car driver or the gas filling staff during or after the gas filling process, and cause safety accidents, the gas filling A break-off valve is connected between the air outlet of the machine and the gas filling gun. When the above situation occurs, the break-off valve can cut off the air flow in time to prevent the compressed natural gas from being exposed, thus playing a role of safety protection. Its working principle is: when the break-off valve is subjected to a certain external pulling force, the break-off valve is broken and can immediately block the gas delivery channel of the gas dispenser and the automobile gas cylinder, so it has an impact on the sealing and safety perfor...

Examples

Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

[0014] Such as figure 1 As shown, a safety pull-off valve includes a valve body 1, a screw plug 3 and a lower valve seat 4, the valve body 1 is provided with an axial through hole, and the inner wall of the axial through hole is provided with an annular rib 17 , the annular rib 17 divides the inside of the valve body 1 into left and right parts, the screw plug 3 is installed in the left part of the valve body 1 through threads, and the lower valve seat 4 extends into the valve body 1 from the right side and presses against the screw plug On the right end face of 3, an O-ring 18 is arranged between the lower valve seat 4 and the annular rib. The screw plug 3 and the lower valve body 1 enclose the inner cavity of the left part of the valve body 1 to form a sealed cavity A, and the lower valve seat 4 T...