Ball-free gas valve
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: 2013-12-11
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.
Method used
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[0024] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0025] like Figure 1 to Figure 3 As shown, a ball-free gas valve includes a valve body 10 made of a non-magnetic material, a pusher 5 made of a magnetic material that is sleeved on the valve body 10, and is sequentially arranged in the valve body 10 through a The spring 7 in the air cavity 3, the cylindrical valve core 8 and the seal 9 made of iron material.
[0026] The valve body 10 can be made of copper material, or other metals or alloys except iron, cobalt and nickel. When selecting the material of the valve body 10, the main point to be considered is the non-magnetic properties 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...
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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 gas valve without a ball core. Background technique [0002] The gas valve is a new type of safety supporting device 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, oxygen, etc. [0003] For example, the Chinese utility model patent (application number: 201120316969.1, authorized announcement number: CN202195144U) discloses a push-type multifunctional gas valve, which includes a valve body, a magnet valve core assembly, an outer magnet push ring installed on the outside of the valve body and a super Temperature device, the valve body is made of a non-magnetic part made of a material blank. In the valve body, there are formed an air inlet ca...
Claims
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IPC IPC(8): F16K17/38F16K31/08F16K27/00
Inventor 许道泽
Owner YUHUAN HAOLIXIN COPPER CO LTD