Indication type gas valve device

Abstract

The utility model discloses an indicating type gas valve device which comprises a valve body, an adjusting screw rod, an indicating nut and a pair of valve plates arranged along the section of the valve cavity, the adjusting screw rod is arranged in the radial direction of the valve cavity, the section, located in the valve cavity, of the adjusting screw rod is provided with a double-end thread section, the two valve plates are oppositely arranged in the valve cavity and matched with the corresponding ends of the double-end thread section in a threaded mode, and the end, penetrating out of the valve body, of the adjusting screw rod is provided with an indicating section matched with an indicating nut in a threaded mode. And the indicating nut is in sliding fit with an indicating part arranged on the surface of the valve body. According to the utility model, the rotary motion of the screw rod is converted into the linear displacement of the valve plate, and meanwhile, the spacing change of the valve plate is mapped into the position movement of the indication bulge on the scale mark in real time through the sliding fit of the indication nut and the indication part, so that the integration of adjustment and indication is realized, and the display precision of the opening degree is obviously improved.

Description

An indicator type gas valve device Technical Field

[0001] This utility model relates to the field of gas valve technology, specifically to an indicator-type gas valve device. Background Technology

[0002] In the field of gas transmission and control, valves, as core components for regulating gas flow, directly affect equipment operating efficiency and safety through precise control of their opening degree. Existing gas valve devices have the following significant shortcomings in terms of opening degree indication and adjustment accuracy:

[0003] The core defect of existing technology is that the opening indication is not intuitive and adjustment relies on experience. Traditional gas valves (such as ball valves and butterfly valves) mostly reflect the opening indirectly through dials, pointers or electronic displays. However, the clearance error of mechanical transmission components (such as gears and connecting rods) leads to insufficient indication accuracy, especially in the case of small flow regulation (users find it difficult to accurately control the opening through visual observation, which can easily lead to gas waste or incomplete combustion).

[0004] The separation of the regulating mechanism and the indicating device results in a complex structure and high maintenance costs; some valves use independent opening sensors (such as potentiometers and Hall sensors) in conjunction with the control system to display the opening degree, which requires additional wiring and calibration, increasing manufacturing costs; mechanical linkage indicating structures are susceptible to vibration and displacement, leading to indicating failure and short maintenance cycles. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of this utility model is to provide an indicator gas valve device that can intuitively display the opening degree of the valve adjustment, so as to facilitate precise adjustment of the valve.

[0006] The technical solution adopted by this utility model is as follows: an indicator-type gas valve device, including a valve body, a valve cavity provided in the valve body, and an adjusting screw, an indicating nut, and a pair of valve plates arranged along the cross-section of the valve cavity; the adjusting screw is arranged radially along the valve cavity, and a section of the adjusting screw located in the valve cavity is provided with a double-threaded section, the threads at both ends of the double-threaded section having opposite directions; the two valve plates are arranged opposite to each other in the valve cavity and are adapted to the corresponding thread at one end of the double-threaded section; an indicating section is provided at one end of the adjusting screw that protrudes from the valve body, the indicating section being threadedly adapted to the indicating nut; the indicating nut is slidably engaged with an indicating part provided on the surface of the valve body; rotation of the adjusting screw can increase or decrease the distance between the two valve plates, and at the same time, cause the indicating nut to slide along the indicating part.

[0007] In this technical solution, a pair of valve plates are arranged inside the valve cavity of the valve body. The opening degree of the valve structure is adjusted by the relative movement of the two valve plates. That is, the valve opening degree is larger when the valve plates are far apart and smaller when they are close together. The distance between the valve plates is precisely controlled by the double-threaded section of the adjusting screw. At the same time, when the adjusting screw rotates, it can also drive the indicating nut to move along the indicating part through the indicating section. This technical solution converts the angular stroke rotation of the screw into the linear stroke position change of the valve plate, and indicates the valve opening degree according to the different positions of the indicating part corresponding to the indicating nut, which is beneficial for precise adjustment of the valve opening degree.

[0008] Preferably, the valve cavity sidewall is provided with a limiting groove that slides with the edge of the valve plate.

[0009] Preferably, the lower outer side of the indicator is provided with symmetrically arranged fixing parts that are fixed to the surface of the valve body.

[0010] Preferably, the indicator segment, indicator nut, and indicator part are arranged coaxially from the inside to the outside. The indicator nut has an indicator protrusion on its outer side, which slides in conjunction with an indicator groove on the outer side of the indicator part. The indicator part has scale markings on the outer side of the indicator groove corresponding to the indicator groove.

[0011] Preferably, the end face of the indicator segment is provided with a rotating groove.

[0012] Preferably, the valve body has a pressure testing hole on its outer side that communicates with the valve cavity, and the pressure testing hole is sealed with a detachable pressure testing nut.

[0013] The beneficial effects of this utility model are as follows: The integrated design of double-threaded drive and visual indication in this utility model synchronously controls the relative movement of the two valve plates by adjusting the double-threaded section of the screw, converting the rotational motion of the screw into the linear displacement of the valve plates. At the same time, through the sliding fit between the indicating nut and the indicating part, the change in the valve plate spacing is mapped in real time to the position movement of the indicating protrusion on the scale mark, realizing the integration of "adjustment-indication". The opening display accuracy is significantly improved, solving the problems of lag in traditional valve indication and structural separation, which is in line with the current development trend of intelligent and refined clean energy equipment. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 is a perspective view of the indicator-type gas valve device provided in the embodiment of this utility model.

[0016] Figure 2 is a side view of the indicator-type gas valve device provided in the embodiment of this utility model.

[0017] Figure 3 is a cross-sectional view of the indicator-type gas valve device provided in the embodiment of this utility model.

[0018] Reference numerals in the attached drawings: valve body 100, valve cavity 110, limit slide groove 111, adjusting screw 200, double-ended threaded section 210, indicating section 220, rotating groove 230, indicating nut 300, valve plate 400, indicating part 500, fixing part 510, indicating slide groove 520, pressure measuring nut 600. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0021] As shown in Figures 1 to 3, a specific embodiment of this utility model provides an indicator-type gas valve device. The device includes a valve body 100, an adjusting screw 200, an indicating nut 300, and a pair of valve plates 400. Each component is made of copper alloy or stainless steel to meet the corrosion resistance and strength requirements of gas equipment. A valve cavity 110 is provided inside the valve body 100. Interface structures can be provided at both ends of the valve body 100 corresponding to the valve cavity 110 for connecting to the gas inlet pipe and outlet pipe respectively. An adjusting screw 200 is arranged radially along the valve cavity 110. The section of the adjusting screw 200 located in the valve cavity 110 is provided with a double-threaded section 210. The threads at both ends of the double-threaded section 210 have opposite directions. Two valve plates 400 are arranged opposite to each other in the valve cavity 110 and are adapted to the threads at the corresponding ends of the double-threaded section 210. An indicator section 220 is provided at the end of the adjusting screw 200 that protrudes from the valve body 100. The indicator section 220 is threadedly adapted to the indicator nut 300. The indicator nut 300 is slidably engaged with the indicator part 500 provided on the surface of the valve body 100. Rotation of the adjusting screw 200 can increase or decrease the distance between the two valve plates 400, and at the same time, the indicator nut 300 slides along the indicator part 500.

[0022] As shown in Figures 1 to 3, with the above configuration, this embodiment arranges a pair of valve plates 400 in the valve cavity 110 of the valve body 100. The opening of the valve structure is adjusted by the relative movement of the two valve plates 400. That is, the valve opening is larger when the valve plates 400 are far apart and smaller when they are close together. The spacing between the valve plates 400 is precisely controlled by the double-threaded section 210 of the adjusting screw 200. At the same time, when the adjusting screw 200 rotates, it can also drive the indicating nut 300 to move along the indicating part 500 through the indicating section 220. By converting the angular stroke rotation of the screw into the linear stroke position change of the valve plate 400, and indicating the valve opening according to the different positions of the indicating nut 300 and the indicating part 500, it is beneficial to accurately adjust the valve opening.

[0023] As shown in Figure 3, in order to ensure that the valve plate 400 moves radially and stably along the valve cavity 110 to achieve valve opening adjustment, this embodiment provides a limiting groove 111 on the side wall of the valve cavity 110 that slides with the edge of the valve plate 400 to constrain the movement trajectory of the valve plate 400.

[0024] As shown in Figure 1, in this embodiment, a fixing part 510 is provided on the outer side of the lower end of the indicator part 500 and is fixed to the surface of the valve body 100. In this way, the indicator part 500 can be installed and fixed by the fixing part 510. In practical applications, the fixing part 510 and the valve body 100 can be fixed with screws.

[0025] As shown in Figures 1 to 3, during assembly, the indicating section 220, indicating nut 300, and indicating part 500 are coaxially arranged from the inside out. The indicating nut 300 has an indicating protrusion on its outer side, which slides into an indicating groove 520 located on the outer side of the indicating part 500. The indicating part 500 has scale markings corresponding to the outer side of the indicating groove 520. Thus, the indicating nut 300 is threadedly fitted to the indicating section 220, with its outer wall radially protruding from the indicating protrusion. The protrusion is embedded in the indicating groove 520 and can slide along the groove. When the adjusting screw 200 rotates, the indicating nut 300 moves axially, and the indicating protrusion simultaneously points to the scale markings, directly displaying the current valve opening. The scale markings on the outer side of the indicating part 500 and the indicating protrusion are directly correlated with the distance between the valve plate 400 and the valve plate 400, allowing the user to directly read the opening visually without the need for additional auxiliary equipment.

[0026] As shown in Figure 1, to facilitate valve opening adjustment, this embodiment features a rotating groove 230 on the end face of the indicator section 220. The rotating groove 230 on the end face of the indicator section 220 is compatible with universal wrenches, supporting both manual and quick adjustment and tool operation, and is compatible with traditional maintenance methods. During operation, when an increase in gas flow is required, an Allen wrench is inserted into the rotating groove 230, and the adjusting screw 200 is rotated clockwise. This increases the distance between the two valve plates 400, increasing the valve opening, and the indicator protrusion moves upward, indicating an increase in valve opening. Conversely, rotating the adjusting screw 200 counterclockwise decreases the distance between the two valve plates 400, causing the indicator protrusion to move downward, indicating a decrease in opening. At the minimum opening, the two valve plates 400 are in contact with a 0mm gap, and the valve is closed.

[0027] During assembly, the portion of the adjusting screw 200 that passes through the valve body 100 forms a rotational sealing fit with the corresponding position of the valve body 100 through a sealing sleeve. A sealing sleeve is provided at the joint between the adjusting screw 200 and the valve body 100. The sealing sleeve has an interference fit with the valve body 100 and a clearance fit with the adjusting screw 200, ensuring flexible rotation while preventing gas leakage.

[0028] As shown in Figure 1, in practical applications, for ease of maintenance, this embodiment has a pressure testing hole on the outside of the valve body 100 that communicates with the valve cavity 110. The pressure testing hole is sealed with a removable pressure testing nut 600. The pressure testing hole is used to periodically check the pressure inside the valve cavity 110. If an abnormal pressure is detected, the valve can be closed in time and upstream pipeline problems can be investigated.

[0029] This embodiment achieves integrated "adjustment-indication" control by driving the valve disc to move synchronously through a double-ended thread and combining the direct mapping between the indicator nut and the scale mark, thus solving the problems of traditional valve opening adjustment relying on experience and indicator lag.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An indicator-type gas valve device, comprising a valve body (100), wherein a valve cavity (110) is provided within the valve body (100), characterized in that; It also includes an adjusting screw (200), an indicating nut (300), and a pair of valve plates (400) arranged along the cross section of the valve cavity (110); the adjusting screw (200) is arranged radially along the valve cavity (110), and a section of the adjusting screw (200) located in the valve cavity (110) is provided with a double-threaded section (210), the threads at both ends of the double-threaded section (210) are turned in opposite directions, and the two valve plates (400) are arranged opposite to each other in the valve cavity (110) and are positioned opposite to the double-threaded section (210). The adjusting screw (200) has a corresponding threaded fit at one end. One end of the adjusting screw (200) that protrudes from the valve body (100) is provided with an indicator section (220). The indicator section (220) is threadedly fitted with the indicator nut (300). The indicator nut (300) is slidably fitted with the indicator part (500) on the surface of the valve body (100). Rotating the adjusting screw (200) can increase or decrease the distance between the two valve plates (400), and at the same time, the indicator nut (300) slides along the indicator part (500).

2. The indicating gas valve device according to claim 1, characterized in that, The valve cavity (110) sidewall is provided with a limiting groove (111) that slides with the edge of the valve plate (400).

3. The indicating gas valve device according to claim 1, characterized in that, The lower outer side of the indicator (500) is provided with a fixing part (510) that is symmetrically arranged and fixed to the surface of the valve body (100).

4. The indicating gas valve device according to claim 1, characterized in that, The indicator section (220), indicator nut (300) and indicator part (500) are arranged coaxially from the inside to the outside. The indicator nut (300) has an indicator protrusion on its outer side. The indicator protrusion slides in conjunction with the indicator groove (520) on the outer side of the indicator part (500). The indicator part (500) has scale markings on the outer side of the indicator groove (520).

5. The indicating gas valve device according to claim 1, characterized in that, The end face of the indicator section (220) is provided with a rotating groove (230).

6. The indicating gas valve device according to claim 1, characterized in that, The valve body (100) has a pressure testing hole on the outside that communicates with the valve cavity (110), and the pressure testing hole is sealed with a detachable pressure testing nut (600).

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