Bidirectional automatic stop valve
An automatic cut-off and valve body technology, which is applied to valve devices, safety valves, balance valves, etc., can solve the problem that the valve plug cannot automatically return, and achieve high work efficiency.
Active Publication Date: 2017-05-24
黄福成
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Problems solved by technology
[0003] The problem to be solved by the present invention is to provide a two-way automatic shut-off valve, which can solve the problem that the valve plug cannot automatically return after the pipeline repair is completed after the current automatic shut-off valve is closed
Method used
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[0026] The present invention will be described in further detail below in conjunction with accompanying drawing embodiment:
[0027] Such as figure 2 A two-way automatic cut-off valve shown includes a valve body 6 and a valve core. The two ends of the valve body 6 are respectively equipped with an inlet connecting pipe 1 and an outlet connecting pipe 13. On the inner side of the valve body 6 near the outlet connecting pipe 13, there are Two curved ring grooves. The spool includes a valve stem 9, the end of the valve stem 9 near the outlet connecting pipe 13 is equipped with an outlet valve plug 12 and a self-locking plate 11 with six flow-limiting holes, the outlet valve plug 12 is equipped with a sealing ring 14, and the sealing ring 14 A bushing 15 is installed between the self-locking plate 11; the outer side of the self-locking plate 11 is distributed with three limiting holes along the circumference, and a self-locking spring 18 and a marble 17 are installed in the limi...
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The invention discloses a bidirectional automatic stop valve and relates to the technical field of pipeline transportation. The bidirectional automatic stop valve comprises a valve body and a valve element. An inlet connection pipe and an outlet connection pipe are arranged at the two ends of the valve body correspondingly. The valve element comprises a valve rod. An outlet valve plug and self-locking plates are arranged at the end, close to the outlet connection pipe, of the valve rod. A first reset spring is mounted between the self-locking plates and the outlet connection pipe. A flow guiding barrel is mounted at the inner end of the inlet connection pipe, wherein the flow guiding barrel is provided with multiple flow guiding holes. A guiding sleeve is mounted in the flow guiding barrel in an inserted manner, wherein the outer side of the guiding sleeve is provided with a boss. The guiding sleeve is provided with an inlet valve plug which extends into the inlet connection pipe. A second reset spring is mounted between the boss of the guiding sleeve and an inner end plate of the flow guiding barrel. A pressure regulating valve connection hole is formed in the middle of the valve body. Compared with the prior art, by means of the bidirectional automatic stop valve, when a downstream pipeline bursts, fluid transportation can be cut off quickly; after the pipeline is rehabilitated, the outlet valve plug and the inlet valve plug can return to the working positions automatically; time and labor are saved; work efficiency is high; and meanwhile, fuel gas or fuel oil retained in the valve body is prevented from polluting the environment.
Description
technical field [0001] The invention relates to the technical field of pipeline transportation, in particular to a bidirectional automatic cut-off valve for gas supply and liquid supply pipelines. Background technique [0002] Gas, fuel oil, water and other resources used in daily life and production are mainly transported by pipelines, which provides great convenience for production and life. The supply will pollute the environment, waste resources, and even cause secondary disasters, endangering people's safety; therefore, it is necessary to install automatic shut-off valves on the pipelines used for gas supply and liquid supply. An automatic shut-off valve currently used such as figure 1 As shown, it includes a valve body 102 and a valve core. The two ends of the valve body 102 are respectively equipped with an inlet connecting pipe 101 and an outlet connecting pipe 108. The inner side of the valve body 102 is provided with two arc-shaped annular grooves at intervals; th...
Claims
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IPC IPC(8): F16K17/34
CPCF16K17/34
Inventor 黄福成
Owner 黄福成