Vertical air source three-way rotating shaft proportional valve

Abstract

The utility model discloses a vertical gas source three-way rotating shaft proportional valve, relates to the technical field of valve bodies, and solves the technical problems that in the existing technical scheme, an axial gas source three-way valve body is large in size, the use requirement cannot be met in a vertical control occasion, and output of two kinds of quantitative gas at one output port cannot be achieved. Comprising a valve body, a valve rod, a flow limiting element I and a flow limiting element II, an input port and an output port are formed in the valve body, the valve rod is rotationally installed in the valve body, a flow guide hole is formed in the valve rod, and the lower end of the flow guide hole is connected to the output port of the valve body; according to the three-way valve, quantitative and vertical conversion output of fluid is well achieved through the rotating shaft; two kinds of quantitative gas output can be obtained through one output port; different flows of gas output of the gas source can be realized; the problem that an existing axial air source three-way valve body is large in size relative to a rotating shaft type valve body is solved. And the use requirement in a vertical control occasion is met.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, and specifically relates to a vertical air source three-way rotating shaft metering valve. Background Art

[0002] In the technical field related to the present utility model, the three-way valve is a commonly used component in the air source system. For a long time, the electromagnetic reversing valve with an axial movement working principle has been relatively common. This axially moving reversing valve mainly relies on electromagnetic thrust to push the valve stem to move left and right to achieve two gas outputs, but it has many disadvantages. Firstly, it can only change the gas output direction and cannot achieve metered gas output. Secondly, it can only be used under power supply conditions. The technical solution of the present invention is a novel vertical air source three-way rotating shaft metering valve structure, aiming to solve the problems existing in the existing three-way conversion valves.

[0003] This technical solution mainly solves the problem of the in-situ rotation and transformation of the working position of the air source three-way valve, and can achieve two metered gas outputs at one output port. Specifically, this solution realizes metered gas output, meeting the application scenarios with precise requirements for gas output volume. By adopting a manual rotation method, it gets rid of the dependence on power supply and broadens the scope of use. Compared with the traditional axial air source three-way valve, the valve body of this solution is relatively small (relative to the rotating shaft type), and is more suitable for use in occasions with limited space. It meets the usage requirements of vertical control occasions and fills the deficiencies in this regard in the existing technology.

[0004] The existing technical solutions have technical problems such as the large volume of the axial air source three-way valve body, the inability to meet the usage requirements in vertical control occasions, and the inability to achieve two metered gas outputs at one output port. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the present utility model provides a vertical air source three-way rotating shaft metering valve, which solves the technical problems existing in the existing technical solutions, such as the large volume of the axial air source three-way valve body, the inability to meet the usage requirements in vertical control occasions, and the inability to achieve two metered gas outputs at one output port.

[0006] To achieve the above object, the present utility model is realized through the following technical solutions: A vertical air source three-way rotating shaft metering valve, comprising a valve body, a valve stem, a flow-limiting element I and a flow-limiting element II, characterized in that an input port and an output port are provided on the valve body, the valve stem is rotatably installed in the valve body, a diversion hole is provided in the valve stem, the lower end of the diversion hole is connected to the output port of the valve body, upper and lower diversion inlets are respectively provided on the valve stem at different heights along its axial direction, the upper and lower diversion inlets are respectively located at different circumferential positions of the valve stem, and their central axes are respectively located on a first horizontal plane and a second horizontal plane that are parallel to each other, the first horizontal plane and the second horizontal plane are perpendicular to the axis of the valve stem and are spaced apart along the axis direction of the valve stem, and the projections of the upper and lower diversion inlets in the top view direction are perpendicular to each other; the flow-limiting element I and the flow-limiting element II are fixedly installed in the valve body.

[0007] Through such a structural design, the functions of gas diversion and flow limitation are realized, laying a foundation for subsequent quantitative output; when the handle is rotated clockwise by 45°, the quantitative gas 1 of the first working position air source is input through the flow-limiting element I and output through the output port; when the handle is rotated counterclockwise by 45°, the quantitative gas 2 of the second working position air source is input through the flow-limiting element II and output through the output port.

[0008] Preferably, a compression nut is sleeved on the valve stem, the compression nut is installed between the valve stem and the valve body, an external thread is provided at the upper end of the valve body, and a nut is threadedly connected to the outside of the upper end of the valve body through the external thread; the stability and sealing performance of the valve body are enhanced.

[0009] Preferably, a handle is provided at the upper end of the valve stem; the rotation of the valve stem can be realized through the operation of the handle, thereby controlling the output working position and flow rate of the gas, making the operation more convenient.

[0010] Preferably, three O-ring rubber seals are installed on the valve stem, the three O-ring rubber seals are installed between the valve stem and the valve body, and are respectively located between the flow-limiting element I and the flow-limiting element II, above the flow-limiting element I and below the flow-limiting element II; effectively improves the sealing performance of the valve and prevents gas leakage.

[0011] Beneficial effects

[0012] The present utility model provides a vertical air source three-way rotating shaft metering valve. The present utility model preferably realizes the quantitative and vertical conversion output of the fluid by the three-way valve using the rotating shaft; realizes the output of two kinds of quantitative gases from one output port; can realize different flow rates of the air source gas output; solves the problem that the valve body of the existing axial air source three-way valve is large relative to the rotating shaft type; meets the use requirements in the vertical control occasion. Description of the drawings

[0013] Figure 1 This is a schematic diagram of the main view cross-section structure of a vertical air source three-way rotating shaft metering valve according to the present utility model.

[0014] In the figure: 1, valve body; 2, valve stem; 3, O-ring rubber seal; 4, nut; 5, compression nut; 6, handle; 7, flow-limiting element I; 8, flow-limiting element II; Specific embodiments

[0015] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The detailed description is as follows.

[0016] Please refer to Figure 1 , the present utility model provides a technical solution: including a valve body 1, a valve stem 2, a flow-limiting element I 7 and a flow-limiting element II 8, characterized in that an input port and an output port are provided on the valve body 1, the valve stem 2 is rotatably installed in the valve body 1, a diversion hole is provided in the valve stem 2, the lower end of the diversion hole is connected to the output port of the valve body 1, upper and lower diversion ports are respectively provided on the valve stem 2 at different heights along its axial direction, the upper and lower diversion ports are respectively located at different circumferential positions of the valve stem 2, and their central axes are respectively located on a first horizontal plane and a second horizontal plane that are parallel to each other. The first horizontal plane and the second horizontal plane are perpendicular to the axis of the valve stem 2 and are spaced apart along the axis direction of the valve stem 2, and the projections of the upper and lower diversion ports in the top view direction are perpendicular to each other; the flow-limiting element I 7 and the flow-limiting element II 8 are fixedly installed in the valve body 1.

[0017] Through such a structural design, the functions of gas diversion and flow limitation are realized, laying a foundation for subsequent quantitative output; when the handle 6 is rotated clockwise by 45°, the quantitative gas 1 of the first working position air source is input through the flow-limiting element I 7 and output through the output port; when the handle 6 is rotated counterclockwise by 45°, the quantitative gas 2 of the second working position air source is input through the flow-limiting element II 8 and output through the output port.

[0018] In this embodiment, it is further set that a compression nut 5 is sleeved on the valve stem 2, the compression nut 5 is installed between the valve stem 2 and the valve body 1, an external thread is provided at the upper end of the valve body 1, and a nut 4 is threadedly connected to the outside of the upper end of the valve body 1 through the external thread; the stability and sealing performance of the valve body 1 are enhanced.

[0019] In this embodiment, it is further set that a handle 6 is provided at the upper end of the valve stem 2; the rotation of the valve stem 2 can be realized through the operation of the handle 6, so as to control the output working position and flow rate of the gas, making the operation more convenient.

[0020] In this embodiment, it is further set that three O-ring rubber seals 3 are installed on the valve stem 2. The three O-ring rubber seals 3 are installed between the valve stem 2 and the valve body 1, and are respectively located between the flow-limiting element I 7 and the flow-limiting element II 8, above the flow-limiting element I 7 and below the flow-limiting element II 8; effectively improving the sealing performance of the valve and preventing gas leakage.

[0021] The detailed connection means are well-known techniques in the art; as Figure 1 shown, the valve stem 2 can rotate in the valve body 1 through the handle 6. The valve stem 2 is provided with an upper inlet and a lower inlet, the planes where their axes are located are parallel, and the projections are perpendicular to each other. When the handle 6 rotates clockwise by 45°, the upper inlet is aligned with the flow-limiting element I 7, and the gas from the gas source flows into the diversion hole quantitatively through the flow-limiting element I 7 and then is output through the output port, realizing the first quantitative output. When the handle 6 rotates counterclockwise by 45°, the lower inlet is aligned with the flow-limiting element II 8, and the gas from the gas source flows into the diversion hole quantitatively through the flow-limiting element II 8 and then is output through the output port, realizing the second quantitative output.

[0022] Since the flow cross-sections of the flow-limiting element I 7 and II can be different, two kinds of quantitative gas outputs can be realized at one output port to meet different flow requirements. The structure adopts a vertical design, which is convenient to use in occasions with limited space or where vertical operation is required, and the overall volume is small, which is convenient for installation and maintenance.

[0023] Three O-ring rubber seals 3 are arranged between the valve stem 2 and the valve body 1, respectively located between the planes where the flow-limiting element I 7 and II are located, above the flow-limiting element I 7 and below the flow-limiting element II 8, effectively preventing gas leakage and ensuring the accuracy of quantitative output. The cooperation between the compression nut 5 and the nut 4 enhances the connection strength between the valve body 1 and the valve stem 2, and improves the overall sealing and structural stability.

[0024] The operator only needs to rotate the valve stem 2 through the handle 6 to switch between the two quantitative outputs, without the need for power supply, which is convenient to use in a power-free environment.

[0025] It is applicable to industrial, laboratory and other occasions that require accurate gas quantitative output and have limited space, especially suitable for vertical operation.

[0026] By replacing different flow-limiting elements, the gas flow rates of the two quantitative outputs can be flexibly adjusted.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0028] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A vertical air source three-way rotating shaft metering valve, comprising a valve body (1), a valve stem (2), a flow-limiting element I (7) and a flow-limiting element II (8), characterized in that, The valve body (1) is provided with an input port and an output port. The valve stem (2) is rotatably installed in the valve body (1). A diversion hole is provided in the valve stem (2). The lower end of the diversion hole is connected to the output port of the valve body (1). Upper and lower diversion inlets are respectively provided on the valve stem (2) at different heights along its axial direction. The upper and lower diversion inlets are respectively located at different circumferential positions of the valve stem (2), and their central axes are respectively located on a first horizontal plane and a second horizontal plane that are parallel to each other. The first horizontal plane and the second horizontal plane are perpendicular to the axis of the valve stem (2) and are spaced apart along the axis direction of the valve stem (2), and the projections of the upper and lower diversion inlets in the top view direction are perpendicular to each other; the flow-limiting element I (7) and the flow-limiting element II (8) are fixedly installed in the valve body (1).

2. The vertical air source three-way rotating shaft metering valve according to claim 1, characterized in that , A compression nut (5) is sleeved on the valve stem (2). The compression nut (5) is installed between the valve stem (2) and the valve body (1). The upper end of the valve body (1) is provided with an external thread, and a nut (4) is threadedly connected to the outside of the upper end of the valve body (1) through the external thread.

3. The vertical air source three-way rotating shaft metering valve according to claim 1, characterized in that , A handle (6) is provided at the upper end of the valve stem (2).

4. The vertical air source three-way rotating shaft metering valve according to claim 1, characterized in that , Three O-ring rubber seals (3) are installed on the valve stem (2). The three O-ring rubber seals (3) are installed between the valve stem (2) and the valve body (1), and are respectively located between the flow-limiting element I (7) and the flow-limiting element II (8), above the flow-limiting element I (7) and below the flow-limiting element II (8).

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