Proportioning valve for air and gas combined mixing

Abstract

The utility model relates to the technical field of valves, in particular to an air and gas combined mixing proportioning valve which is composed of a valve element, a sealing ring, a stroke stop lever, a valve body, a signal switch, a limiting stop lever and an operating handle. The valve body is provided with a gas inlet, an air inlet and a gas-air mixture outlet which are independent; the valve element is installed on the inner wall of the valve body, the limiting stop levers are fixedly installed at the left end of the valve body, the stroke stop lever is fixedly installed after the valve element penetrates through the valve body, the stroke stop lever is arranged between the two sets of limiting stop levers, and the operating handle is fixedly installed at the left end of the valve element. The valve body is provided with a fuel gas inlet, an air inlet and a fuel gas and air mixture outlet, the valve body and the valve element are formed through machining, the process is stable and accurate, the valve body and the valve element are assembled in an embedded mode and sealed through the sealing ring for leakage prevention, and the situation of gas leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a proportional regulating valve for air and gas mixing. Background Art

[0002] The three elements of combustion are known as combustibles, combustion-supporting materials, and ignition sources. The combustibles described in this patent are fuel gas, the combustion-supporting materials are oxygen in the air, and the ignition sources are electronic ignition or artificial ignition.

[0003] The gas control valve and air control valve in the known gas combustion appliances are generally independent. If they are to be mechanically linked, they are basically driven by a chain sprocket or hinged. These gas-air linkage mechanisms are affected by mechanical structural defects and component processing accuracy. The gas-air control ratio is not accurate, the combustion effect is not good, and the smoke after combustion may not meet the standard or the combustion efficiency is low.

[0004] Another well-known method of existing gas and air linkage control is to drive signal transmission by adjusting the gas control valve handle. This signal is to change the power supply parameters of the blower to change the blower speed to achieve the change of air volume. The biggest drawback of this gas and air linkage form is that the lag time is long. When the blower receives the signal, it takes several seconds to accelerate or decelerate the speed change, but the gas supply is manually operated and completed in a few tenths of a second. This situation will cause the gas and air ratio to be mismatched within a few seconds of adjusting the firepower, and the combustion condition will be abnormal. Summary of the invention

[0005] The utility model aims to provide a ratio regulating valve for air-gas mixing to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A proportional regulating valve for air and gas mixture, comprising a valve core, a sealing ring, a travel stop rod, a valve body, a signal switch, a limit stop rod and an operating handle; the valve body has a separate gas inlet, an air inlet and a gas-air mixture outlet; the valve core is installed on the inner wall of the valve body, the limit stop rod is fixedly installed on the left end of the valve body, the valve core passes through the valve body and is fixedly installed with a travel stop rod, the travel stop rod is arranged between two groups of the limit stop rods, the operating handle is fixedly installed on the left end of the valve core, and air intake channels are evenly opened on the valve core and correspond to the gas inlet; a notch is arranged on the right end of the valve core and corresponds to the air inlet.

[0008] In a preferred implementation manner of the present utility model, a signal switch is fixedly mounted on the valve body.

[0009] In a preferred embodiment of the present utility model, a sealing ring is installed on the outer wall of the valve core, and two groups of the sealing rings are provided. The two groups of the sealing rings are arranged on both sides of the gas inlet of the valve body.

[0010] In a preferred embodiment of the present utility model, the gas inlet end and the air inlet end of the valve core are processed into gradual air inlet channels.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0012] The appearance is simple and the structure is compact. The valve body is equipped with a gas inlet, an air inlet and a gas-air mixture outlet. The valve body and valve core are machined with stable and precise technology. The two are embedded and assembled, and then sealed with a sealing ring to prevent leakage.

[0013] A valve body has a separate gas inlet, air inlet, and gas-air mixture outlet. The air and gas entering the valve body are mixed in a certain proportion and then output. The mixed combustible gas is transported to the burner through the valve gas-air mixture outlet. This valve integrates the gas valve and the air valve into an integrated structure, which reduces the valve volume and is easy to install. Compared with the traditional separate air valve and gas control valve, this ratio control valve is easy to operate, and the gas-air ratio adjustment is accurate and reliable. It can also effectively reduce human operating errors, obtain better combustion conditions, reduce combustion noise and harmful components in smoke, and improve combustion thermal efficiency.

[0014] The gas channel of the valve core is processed into a gradual structure. Turning the operating handle changes the amount of gas entering the valve, which will also change the opening of the air channel and control the amount of air entering the valve body. The amount of gas and air mixed in the valve body is determined by the matching openings of the gas channel and the air channel of the valve core.

[0015] Compared with the traditional gas-air linkage regulation method, this proportional control valve has a compact structure, precise regulation, safety and reliability; in particular, the valve core and valve body cooperate to open synchronously to adjust the amount of gas and air entering, achieving the optimal ratio of the mixture without unnecessary linkage mechanisms and time delays. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a main view of a ratio control valve for air and gas mixing;

[0018] Figure 2 A top view of a ratio control valve for air and gas mixing;

[0019] Figure 3 It is a structural exploded diagram of a ratio control valve for air and gas mixing;

[0020] Figure 4 It is a schematic diagram of the function of a ratio control valve for air and gas mixing;

[0021] Figure 5 The present invention is a combined stereoscopic diagram of a proportional regulating valve for air and gas mixing.

[0022] In the figure: 1. Valve core; 2. Sealing ring; 3. Travel stop rod; 4. Valve body; 5. Signal switch; 6. Limit stop rod; 7. Operating handle; A—valve open state; B—valve closed state; C—valve adjustment state. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] Please refer to Figure 1-5 , an air-gas mixed ratio regulating valve, comprising a valve core 1, a sealing ring 2, a travel stop rod 3, a valve body 4, a signal switch 5, a limit stop rod 6, and an operating handle 7; the valve body 4 has a separate gas inlet, an air inlet, and a gas-air mixture outlet, and the air and gas entering the valve body are mixed in a certain proportion and then output, and the mixed combustible gas is transported to the burner through the valve gas-air mixture outlet. This valve integrates the gas valve and the air valve into an integrated structure, which reduces the valve volume and is easy to install; compared with the traditional separate air valve and gas control valve, the ratio regulating valve is easy to operate, the gas and air ratio regulation is accurate and reliable, and it can more effectively reduce human operating errors, obtain better combustion conditions, reduce combustion noise and harmful components in flue gas, and improve combustion thermal efficiency;

[0025] The valve core 1 is installed on the inner wall of the valve body 4, and a limit stop rod 6 is fixedly installed on the left end of the valve body 4. After the valve core 1 passes through the valve body 4, a travel stop rod 3 is fixedly installed. The travel stop rod 3 is arranged between two groups of limit stop rods 6. An operating handle 7 is fixedly installed on the left end of the valve core 1. Inlet channels are evenly opened on the valve core 1 and correspond to the gas inlet. The valve core 1 can rotate the operating handle 7 to different openings according to the combustion power requirements to achieve different combustion powers. When the valve core 1 rotates at different angles, the gas channel changes in size to produce different combustion powers. The amount of gas entering the valve body is linked to the amount of air entering the valve body. The gas and air channels have been accurately matched in the processing and manufacturing of the valve core 1;

[0026] The right end of the valve core 1 is provided with a notch corresponding to the air inlet. By rotating the handle 7, the air inlet channel of the valve core 1 is reduced or increased, and the notch corresponding to the air inlet is also changed, so as to adjust the amount of gas.

[0027] The valve body 4 is fixedly mounted with a signal switch 5, which provides a switch signal to the matching gas switch solenoid valve, electronic igniter, accidental flameout protector, blower and other components and equipment through the action of the travel stopper 3, ensuring the convenience and safety of the operation of the gas equipment using this proportional valve;

[0028] The outer wall of the valve core 1 is provided with a sealing ring 2, and two groups of the sealing rings 2 are provided, and the two groups of the sealing rings 2 are arranged on both sides of the gas inlet of the valve body 4;

[0029] The gas inlet end and the air inlet end of the valve core 1 are processed into gradual air inlet channels, and the channels are processed into different shapes and specifications according to different gas types and combustion powers to facilitate different gas types and power requirements; the channels are processed into gradual air inlet channels, and the channels are matched and processed according to different combustion conditions to achieve the best air and gas ratio; the size of the proportional control valve can be changed according to the power demand and installation requirements of the gas burning appliance, and the installation method and direction can be changed according to the joints of the gas, air and mixture, and the form and direction of the operating handle can be changed according to the user's operating requirements.

[0030] The working principle of the utility model is as follows: the utility model complies with the principle of the plug valve, the proportional control valve is provided with a gas inlet, an air inlet and a gas-air mixture outlet, and the valve opening can be adjusted by adjusting the operating handle 7, and there are valve opening state A, valve closing state B, and valve adjustment state C respectively. When the proportional control valve is opened, the travel lever 3 moves to drive the signal switch 5 to generate a signal to the matching gas switch solenoid valve, electronic igniter, accidental flameout protector, blower and other components and equipment, and the air also enters the valve body at the same time as the gas enters the valve body. In the valve adjustment state C of the operating handle 7, the size of the gas and air channels is adjusted, and then the amount of gas and air entering the valve body is accurately controlled to form an optimal proportional mixture of gas and air.

[0031] In summary, the utility model discloses a ratio regulating valve with reasonable structure, safe and reliable performance, accurate control of the ratio of gas to air, and convenient installation and maintenance; a gas-air linkage mixing ratio regulating valve that can be used in gas combustion appliance products and is suitable for a variety of gas. The specific implementation is only an embodiment of the present invention and does not limit the present invention.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A ratio regulating valve for air and gas mixing, characterized in that: The valve body (4) is composed of a valve core (1), a sealing ring (2), a travel stop rod (3), a valve body (4), a signal switch (5), a limit stop rod (6), and an operating handle (7); the valve body (4) has a separate gas inlet, an air inlet, and a gas-air mixture outlet; the valve core (1) is installed on the inner wall of the valve body (4); the limit stop rod (6) is fixedly installed on the left end of the valve body (4); the valve core (1) passes through the valve body (4) and is fixedly installed with the travel stop rod (3); the travel stop rod (3) is arranged between two groups of the limit stop rods (6); the operating handle (7) is fixedly installed on the left end of the valve core (1); the valve core (1) is evenly provided with air inlet channels corresponding to the gas inlet; the right end of the valve core (1) is provided with a notch corresponding to the air inlet.

2. The air-gas mixing ratio regulating valve according to claim 1, characterized in that: A signal switch (5) is fixedly mounted on the valve body (4).

3. The air-gas mixing ratio regulating valve according to claim 1, characterized in that: A sealing ring (2) is installed on the outer wall of the valve core (1), and two groups of the sealing rings (2) are provided. The two groups of the sealing rings (2) are arranged on both sides of the gas inlet of the valve body (4).

4. The air-gas mixing ratio regulating valve according to claim 1, characterized in that: The gas inlet end and the air inlet end of the valve core (1) are processed into gradually changing air inlet passages.

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