High pressure proportional gas mixing valve used for mixing two fuel gases with different properties
A gas mixing and proportional technology, applied in valve details, multi-way valves, safety valves, etc., can solve problems such as simple adjustment of transmission mechanism, unstable outlet pressure, and inability to adapt to changes in gas source flow, so as to maintain stability and maintain pressure Effect
Inactive Publication Date: 2011-04-27
YISIDA ELECTROMECHANICAL EQUIP TIANJIN CITY
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Problems solved by technology
The existing high-pressure proportional air mixing valve structure has the following defects: it can only adjust the intake air ratio, the adjustment transmission mechanism is simple, the mixing ratio cannot be adjusted accurately, and the air source flow before mixing cannot be adjusted according to the user's air consumption. adapt to change
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[0011] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0012] Figure 1 ~ Figure 2 It shows a high-pressure proportional gas mixing valve for mixing two different types of gas, including a valve body 4, a gas mixing sliding sleeve 5 with upper and lower covers 20, 21, and the valve body is provided with A and B valves Body air inlets 1, 2 and valve body air outlet 3, the air-mixing sliding sleeves are provided with A, B sliding sleeve air inlets 11, 12 and sliding sleeve air outlets 13 correspondingly, and the air-mixing sliding sleeve 5 is fitted with a sliding fit Inside the valve body 4, there is a proportional adjustment mechanism below which the rack gear is controlled by a manual screw to rotate the air-mixing sleeve. In this example, the proportional adjustment mechanism 14 is ...
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The invention relates to a high pressure proportional gas mixing valve used for mixing two fuel gases with different properties. A splined hub is fixed on a gear below a gas mixing sliding sleeve provided with an upper cover and a lower cover, the upper section of a valve rod penetrates through the gas mixing sliding sleeve to be fixedly connected with the upper cover of the gas mixing sliding sleeve and a splined shaft, one end of the lower section of the valve rod is fixedly connected with the splined shaft, the other end of the lower section of the valve rod is inserted into a shaft groove arranged on a rubber diaphragm pressing plate of a rubber diaphragm, a valve body arranged below the rubber diaphragm is provided with an air intake, the gear is arranged on a clapboard which is provided with central holes and is arranged above rubber diaphragm in a sliding way, the cavity above the rubber diaphragm is provided with holes by virtue of the clapboard, the gear is provided with a hole at the center, and the clearance between the splined shaft and the splined hub and the clearance between the upper section of the valve rod and the gas mixing sliding sleeve are communicated with the interior of the gas mixing sliding sleeve. Pressure in the gas mixing sliding sleeve is changed after gases are mixed, and the rubber diaphragm causes the gas mixing sliding sleeve to move up and down along with the rubber diaphragm by virtue of the valve rod, thus changing the area of the inlet and outlet channel of the valve body by changing the position of the inlet and outlet of the gas mixing sliding sleeve relative to the inlet and outlet of the valve body, so as to change flow of gas and cause flow of a gas source before mixing to be changed along with flow of the gas after being mixed.
Description
technical field [0001] The invention relates to a gas mixing valve, in particular to a high-pressure proportional gas mixing valve for mixing two different types of gas. Background technique [0002] In gas engineering, it is often encountered that two kinds of gas with different properties are required to be mixed or gas with high calorific value and air are mixed into a gas that meets a certain property, which requires a gas mixing device to mix it in a certain proportion. The existing high-pressure proportional air mixing valve structure has the following defects: it can only adjust the intake air ratio, the adjustment transmission mechanism is simple, the mixing ratio cannot be adjusted accurately, and the air source flow before mixing cannot be adjusted according to the user's air consumption. adapt to change. If the user's gas consumption changes greatly, the gas source flow rate before mixing can only be manually readjusted. Especially when the mixed gas flow rate c...
Claims
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IPC IPC(8): F16K11/078F16K17/22F16K31/50F16K31/54F16K37/00
Inventor 陈兴文张建婷杨萍
Owner YISIDA ELECTROMECHANICAL EQUIP TIANJIN CITY