A gas valve without ball core
A technology of gas valves and ball cores, which is applied to valve details, safety valves, balance valves, etc., can solve problems such as complex production and assembly processes, complex over-temperature protection structures, etc., and achieve low manufacturing costs, simple structures, and stable positioning effects Effect
Active Publication Date: 2015-10-28
YUHUAN HAOLIXIN COPPER CO LTD
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Problems solved by technology
However, such an over-temperature protection structure is relatively complicated, and the production and assembly process is also relatively complicated.
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[0024] The following are specific embodiments of the present invention in conjunction with the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.
[0025] Such as Figure 1 to Figure 3 As shown, a coreless gas valve includes a valve body 10 made of a non-magnetic conductive material, a pusher 5 made of a magnet material sleeved on the valve body 10, and a valve body 10 in turn. The spring 7 in the air cavity 3, the valve core 8 and the sealing member 9 made of iron material in a columnar shape.
[0026] The valve body 10 can be made of copper material, or made of other metals or alloys other than iron, cobalt, and nickel. When selecting the material of the valve body 10, the main consideration is the non-magnetic property of the material. The valve body 10 includes an upper valve body 10a and a lower valve body 10b. The outer side of the upper valve body 10a has a ring-shaped p...
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The invention provides a ball-free gas valve which belongs to the technical field of valves and solves the problems that an existing gas valve has a complex over-temperature protection structure and the like. The gas valve comprises a valve body made of a non-magnetic material; a gas inlet and a gas outlet are formed in the both ends of the valve body; a gas passing cavity communicated with the gas inlet and the gas outlet is further arranged inside the valve body, and is internally provided with a spring, a valve core and a sealing piece in sequence; the both ends of the spring are supported against on one end part of the valve core and the inner lateral wall of the gas passing cavity respectively; the sealing piece is fixed at the other end of the valve core; a circular push piece made of a magnetic material is sleeved on the outer side of the valve body, and can slide back and forth relative to the axial direction of the valve body; positioning pieces for limiting the sliding of the push piece and positioning the push piece are further arranged on the both end parts of the valve body. The push piece is demagnetized by heating when a fire disaster happens so that a valve core assembly automatically seals the gas outlet by itself without the effect of the push piece. Therefore, the over-temperature protection structure is simpler.
Description
Technical field [0001] The invention belongs to the technical field of valves, and relates to a gas valve, in particular to a non-ball core gas valve. Background technique [0002] The gas valve is a new type of safety equipment for gas pipeline engineering. It is used to cut off and connect the gas in the pipeline. It has good control characteristics and closing and sealing performance. It is suitable for various gas medium pipelines such as city gas, liquefied petroleum, natural gas and oxygen. [0003] For example, the Chinese utility model patent (application number: 201120316969.1, authorization announcement number: CN 202195144 U) discloses a push-type multifunctional gas valve, including a valve body, a magnet valve core assembly and an outer magnet push ring installed on the outside of the valve body With the over-temperature device, the valve body is made of a non-magnetic part made of a material embryo. In the valve body, an air inlet cavity, a valve cavity, an opening s...
Claims
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IPC IPC(8): F16K17/38F16K31/08F16K27/00
Inventor 许道泽
Owner YUHUAN HAOLIXIN COPPER CO LTD