Assembly structure of plug valve and air inlet pipe

Abstract

The utility model discloses an assembly structure of a plug valve and a gas inlet pipe, and belongs to the technical field of gas accessories. Comprising two plug valves which are provided with air inlets, valve elements and at least one fire outlet channel; the two ends of the air inlet pipe are connected with the air inlets of the two plug valves respectively; the valve elements and the air inlets of the plug valves are coaxially arranged, and the two valve elements are symmetrically arranged along the central axis of the air inlet pipe, so that the air inlet pipe is linearly arranged, and the two ends of the air inlet pipe are in butt joint with the two plug valves in a straight state. Due to the fact that the valve elements and the air inlet of the plug valve are coaxially arranged, the two valve elements can be symmetrically arranged along the central axis of the air inlet pipe, the air inlet pipe can be designed to be of a linear structure, bending treatment is not needed, the design reduces machining difficulty and production cost, in addition, the design is also convenient for large-scale production, and production efficiency is improved. The production efficiency is improved, and the potential leakage risk caused by bending is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of gas fittings technology, specifically relating to an assembly structure of a plug valve and an intake pipe. Background Technology

[0002] In gas equipment and industrial combustion systems, dual plug valves, connected in parallel via inlet pipes, are widely used for gas flow distribution control. In the traditional assembly structure of dual plug valves, each individual plug valve employs a design where the valve core axis is misaligned with the axis of the inlet and mounting flange (i.e., a non-coaxial layout). The core reason for this is:

[0003] The misalignment design allows the air inlet inside the plug valve and the communication channel between the solenoid valve cavity to be formed in one step by the mold through a "bump" method (that is, the communication holes of the two cavities are aligned in the mold opening direction, without the need for a side core pulling structure), thereby simplifying the mold complexity and reducing production costs.

[0004] However, this misaligned design causes significant problems in the scenario of two valves in parallel:

[0005] 1. Increased complexity in pipe processing:

[0006] When two plug valves are connected through an intake pipe, the valve core is misaligned with the axis of the firing channel. At least one end of the intake pipe needs to be machined into a bent surface (such as an L-shaped elbow) to achieve a matching connection, which increases the number of processing steps and raises production costs.

[0007] 2. Risks related to sealing reliability:

[0008] The non-planar contact at the air intake interface requires a custom-made seal to compensate for the geometric tolerances, and long-term use can easily lead to gas leakage due to stress concentration. Utility Model Content

[0009] This utility model addresses the aforementioned problems in the existing technology by proposing an assembly structure for a plug valve and an intake pipe that is easy to process.

[0010] This utility model can be achieved through the following technical solutions:

[0011] An assembly structure for a plug valve and an intake manifold, comprising:

[0012] Two plug valves are provided, each having an air inlet, a valve core, and at least one flame outlet channel.

[0013] An air inlet pipe, the two ends of which are respectively connected to the air inlets of the two valve stems;

[0014] The valve core is coaxially arranged with the air inlet, and the two valve cores are symmetrically arranged along the central axis of the air inlet pipe, so that the air inlet pipe is arranged in a straight line and its two ends are connected to the two stopcocks in a straight state.

[0015] As a further improvement of this utility model, the two ends of the air inlet pipe are connected to the air inlet of the plug valve through mounting flanges, and the valve core, the air inlet, and the mounting flange are coaxially arranged.

[0016] As a further improvement of this utility model, the two mounting flanges are symmetrically arranged at both ends of the air intake pipe.

[0017] As a further improvement of this utility model, the mounting flange is assembled from a plug valve flange and an intake pipe flange. The plug valve flange is integrated at the intake port of the plug valve, and the intake pipe flange is integrated at both ends of the intake pipe.

[0018] As a further improvement of this utility model, an air intake sealing ring is provided between the flange of the plug valve and the flange of the air intake pipe.

[0019] As a further improvement of this utility model, the mounting flange is planar and has a gas passage.

[0020] As a further improvement of this utility model, the air intake pipe has a gas passage, which is connected to the air inlet of the plug valve through the gas through hole.

[0021] As a further improvement of this utility model, the air intake pipe also has a gas pipe interface, which is connected to the gas passage and used to connect an external gas input pipeline.

[0022] As a further improvement of this utility model, the plug valve also has a solenoid valve chamber and a valve core chamber. The solenoid valve chamber is provided with a solenoid valve, and the valve port between the solenoid valve chamber and the valve core chamber is opened or closed by turning the solenoid valve on or off.

[0023] As a further improvement of this utility model, the valve core is disposed in the valve core cavity, and the valve core is connected to a valve stem. The rotation of the valve stem drives the valve core to rotate, thereby controlling the opening degree of the valve port between the valve core cavity and the fire outlet channel.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Straight Inlet Pipe Design: Since the valve core of the plug valve is arranged coaxially with the air inlet and the mounting flange, the two valve cores can be symmetrically arranged along the central axis of the air inlet pipe. Therefore, the air inlet pipe can be designed as a straight structure. The mold can be made directly and the end does not need any bending treatment. This design not only reduces the processing difficulty and production cost, but also facilitates mass production, improves production efficiency, and reduces the risk of airflow blockage caused by potential processing defects due to bending, as well as the risk of leakage caused by exposed die-casting pores.

[0026] 2. Easy to install and maintain: Compared with the L-shaped elbow interface that requires additional processing in the traditional design, the straight intake pipe and straight connection method are easier to install. This not only shortens the installation time, but also reduces the possibility of incorrect installation. At the same time, the straight design makes subsequent maintenance work easier, such as replacing seals or other components.

[0027] 3. Optimize fluid dynamics performance: Straight pipe design helps maintain the smoothness of gas flow, reduces turbulence and pressure loss caused by bends, and ensures that the gas input flow rate is not affected, which is crucial for maintaining combustion efficiency and system stability;

[0028] 4. Symmetrical arrangement of mounting flanges: The symmetrical arrangement reduces the complexity of installation. Workers can more easily and accurately connect the air inlet pipe to the plug valve, reducing installation time and costs. It also helps to ensure that the relative position between the two plug valves is more accurate and stable. In addition, the symmetrical layout enhances the visual aesthetics of the overall assembly structure, which is especially important for products such as stoves used by end users. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the plug valve and the air inlet pipe of this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the plug valve and the intake pipe after assembly of this utility model;

[0031] Figure 3 This is a cross-sectional view of the plug valve and the intake pipe of this utility model after assembly.

[0032] Figure 4 This is a cross-sectional view of the air intake pipe of this utility model.

[0033] In the diagram, 100 is a stopcock valve; 110 is an air inlet; 120 is a valve core; 121 is a valve stem; 130 is a flame outlet channel; 140 is a solenoid valve chamber; and 141 is a solenoid valve.

[0034] 200. Intake pipe; 210. Gas passage; 220. Gas pipe interface;

[0035] 300. Mounting flange; 310. Plug valve flange; 320. Inlet pipe flange; 330. Inlet sealing ring; 340. Gas passage. Detailed Implementation

[0036] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0037] like Figures 1-4 As shown, this utility model provides an assembly structure for a plug valve and an intake pipe, comprising:

[0038] Two plug valves 100 are provided, each having an air inlet 110, a valve core 120, and at least one flame outlet channel 130.

[0039] The intake pipe 200 has its two ends connected to the intake ports 110 of two stopcock valves 100, respectively;

[0040] The valve core 120 is coaxially arranged with the air inlet 110, and the two valve cores 120 are symmetrically arranged along the central axis of the air inlet pipe 200, so that the air inlet pipe 200 is arranged in a straight line and its two ends are connected to the two plug valves 100 in a straight state.

[0041] It should be noted that in the prior art, the air inlet 110 of the plug valve 100 and the valve core 120 are designed to be offset. Although this design simplifies the molding process of the internal structure (e.g., one-time molding by "penetrating" the mold), when applied to the parallel use of dual plug valves 100, it causes at least one end of the air inlet pipe 200 to be bent to adapt to this non-coaxial layout, which increases the processing difficulty and cost, and may lead to a decrease in sealing performance.

[0042] In contrast, the improved solution proposed in this embodiment solves the above-mentioned problem by coaxially arranging the valve core 120 of the plug valve 100 with the air inlet 110. Specifically:

[0043] 1. Straight Inlet Pipe 200 Design: Since the valve core 120 and the air inlet 110 are arranged coaxially, the two valve cores 120 can be symmetrically arranged along the central axis of the air inlet pipe 200. Therefore, the air inlet pipe 200 can be designed as a straight structure. The mold can be made directly and the end does not need any bending treatment. This design not only reduces the processing difficulty and production cost, but also facilitates mass production, improves production efficiency, and reduces the risk of airflow blockage caused by potential processing defects due to bending and leakage caused by exposed die-casting pores.

[0044] 2. Easy to install and maintain: Compared to the L-shaped elbow interface that requires additional processing in traditional designs, the straight intake pipe 200 and straight connection method are easier to install. This not only shortens installation time but also reduces the possibility of incorrect installation. At the same time, the straight design makes subsequent maintenance work simpler, such as replacing seals or other components.

[0045] 3. Optimize fluid dynamics performance: Straight pipe design helps maintain the smoothness of gas flow, reduces turbulence and pressure loss caused by bends, and ensures that the gas input flow rate is not affected, which is crucial for maintaining combustion efficiency and system stability.

[0046] Preferably, both ends of the intake pipe 200 are connected to the plug valve 100 via mounting flanges 300, and the valve core 120, the intake port 110, and the mounting flanges 300 are coaxially arranged. Since the intake pipe 200 has a straight structure, its ends do not require bending, allowing the two mounting flanges 300 to be symmetrically arranged at both ends of the intake pipe 200. This symmetrical arrangement has at least the following advantages:

[0047] 1. Easy to install: The symmetrical design makes the entire assembly structure more intuitive and easier to understand, reducing installation complexity. Workers can more easily and accurately connect the intake pipe 200 with the plug valve 100, reducing installation time and cost.

[0048] 2. Improved installation accuracy: The symmetrical design helps to ensure a more accurate and stable relative position between the two plug valves 100. This not only helps to ensure the uniformity and stability of gas flow, but also reduces stress concentration caused by asymmetry and extends the service life of the equipment.

[0049] 3. Enhanced aesthetics: The symmetrical layout in appearance improves the visual appeal of the overall assembly structure, which is especially important for products such as stoves used by end users.

[0050] 4. Optimized space utilization: The straight air intake pipe 200, combined with the symmetrical mounting flange 300 design, makes the entire assembly structure more compact and saves installation space, which is especially beneficial for applications with limited space (such as small kitchens or industrial equipment).

[0051] In summary, by adopting a straight air intake pipe 200 and setting symmetrical mounting flanges 300 at both ends, the production process is simplified and manufacturing costs are reduced, while the convenience and accuracy of installation are improved. Furthermore, this design enhances the product's aesthetics and space utilization, which is significant for improving user experience and product competitiveness.

[0052] This installation method effectively solves a series of problems caused by the need to bend the intake pipe by 200 degrees in traditional designs, providing a more efficient, reliable and economical solution.

[0053] Preferably, the mounting flange 300 is assembled from a plug valve flange 310 and an intake pipe flange 320. The plug valve flange 310 is integrated at the intake port 110 of the plug valve 100, and the intake pipe flange 320 is integrated at both ends of the intake pipe 200. The two flanges are connected and fixed by fasteners after they are joined together.

[0054] In order to ensure the sealing of the connection and prevent gas leakage, an air inlet sealing ring 330 is provided between the plug valve flange 310 and the air inlet pipe flange 320. Under the pressure applied by the fastener, the air inlet sealing ring 330 can be deformed appropriately to conform to the micro-unevenness of the flange surface, increase the contact area, and thus improve the sealing performance.

[0055] In addition, the modular design makes it easier to inspect, clean and replace the components, which facilitates daily maintenance and troubleshooting.

[0056] Preferably, the mounting flange 300 is flat and has a gas passage 340. This flat mounting flange 300 is easier to process and will not obstruct the airflow, ensuring smooth gas flow.

[0057] Preferably, the air intake pipe 200 has a gas passage 210, which is seamlessly connected to the air inlet 110 of the plug valve 100 through the gas through hole 340 of the mounting flange 300, ensuring the smoothness and stability of the gas transmission process.

[0058] Preferably, the intake pipe 200 also has a gas pipe interface 220, which is used to connect to an external gas input pipeline. The gas pipe interface 220 is directly connected to the gas passage 210 inside the intake pipe 200, forming a complete gas delivery path from the external gas source all the way to the intake port 110 of the stopcock valve 100, ensuring the continuity and reliability of the entire gas system.

[0059] Preferably, the plug valve 100 also has a solenoid valve chamber 140 and a valve core chamber. The solenoid valve chamber 140 is equipped with a solenoid valve 141. The solenoid valve 141 is a key component for controlling the flow of gas. Its working principle is based on electromagnetic force to realize the opening and closing of the valve port between the solenoid valve chamber 140 and the valve core chamber, thereby controlling whether the externally input gas can enter the valve core chamber.

[0060] Preferably, the valve core 120 is disposed in the valve core cavity and is connected to the valve stem 121. The valve stem 121 is rotated manually or electrically, thereby driving the valve core 120 to rotate synchronously. This rotational movement can adjust the positional relationship between the valve core 120 and the valve core cavity and the flame outlet channel 130, so as to achieve precise control of the valve opening between the two. The valve opening determines the gas flow rate. Different openings correspond to different gas supply quantities to achieve flame size adjustment.

[0061] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0062] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0063] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0065] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An assembly structure for a plug valve and an intake pipe, characterized in that, include: Two plug valves are provided, each having an air inlet, a valve core, and at least one flame outlet channel. An air inlet pipe, the two ends of which are respectively connected to the air inlets of the two valve stems; The valve core is coaxially arranged with the air inlet, and the two valve cores are symmetrically arranged along the central axis of the air inlet pipe, so that the air inlet pipe is arranged in a straight line and its two ends are connected to the two stopcocks in a straight state.

2. The assembly structure of a plug valve and an intake pipe according to claim 1, characterized in that, Both ends of the air intake pipe are connected to the air inlet of the plug valve via mounting flanges, and the valve core, the air inlet, and the mounting flange are coaxially arranged.

3. The assembly structure of the plug valve and the intake pipe according to claim 2, characterized in that, The two mounting flanges are symmetrically arranged at both ends of the air intake pipe.

4. The assembly structure of a plug valve and an intake pipe according to claim 2, characterized in that, The mounting flange is assembled from a plug valve flange and an intake pipe flange. The plug valve flange is integrated at the intake port of the plug valve, and the intake pipe flange is integrated at both ends of the intake pipe.

5. The assembly structure of a plug valve and an intake pipe according to claim 4, characterized in that, An air intake sealing ring is provided between the flange of the plug valve and the flange of the air intake pipe.

6. The assembly structure of a plug valve and an intake pipe according to claim 2, characterized in that, The mounting flange is planar and has a gas passage.

7. The assembly structure of a plug valve and an intake pipe according to claim 6, characterized in that, The intake pipe has a gas passage, which is connected to the intake port of the stopcock valve through the gas through-hole.

8. The assembly structure of a plug valve and an intake pipe according to claim 7, characterized in that, The air intake pipe also has a gas pipe interface, which is connected to the gas passage and used to connect to an external gas input pipeline.

9. The assembly structure of a plug valve and an intake pipe according to claim 1, characterized in that, The plug valve also has a solenoid valve chamber and a valve core chamber. The solenoid valve chamber is equipped with a solenoid valve. By turning the solenoid valve on and off, the valve port between the solenoid valve chamber and the valve core chamber is opened or closed.

10. The assembly structure of a plug valve and an intake pipe according to claim 9, characterized in that, The valve core is disposed in the valve core cavity, and the valve core is connected to a valve stem. The rotation of the valve stem drives the valve core to rotate, thereby controlling the opening degree of the valve port between the valve core cavity and the fire outlet channel.

Images