Small plug valve

Abstract

The small plug valve comprises a valve body, the valve body is provided with an air inlet end, a valve cavity and an electromagnetic valve cavity, the small plug valve is characterized in that the valve body is further provided with a single air outlet end, the air inlet end is communicated with the valve cavity, the valve cavity is communicated with the electromagnetic valve cavity, and the electromagnetic valve cavity is communicated with the single air outlet end. The small plug valve is suitable for the use requirement for small fire power, is small in overall submission and light in weight, is provided with a single gas outlet end, and can form single-ring fire to be used after being assembled on a stove.

Description

Technical Field

[0001] This utility model relates to the field of plug valve technology, and in particular to a small plug valve. Background Technology

[0002] Currently, most gas stoves in China have two gas outlets on their stopcock valves: one for supplying gas to the outer ring of the burner and the other for supplying gas to the inner ring. This allows for simultaneous inner and outer ring flames, making the heat output suitable for everyday cooking in Chinese households. However, these stopcock valves are generally bulky and heavy, with projected areas exceeding 45 square centimeters and weights around 220 grams. Furthermore, because the gas enters the solenoid valve cavity from the inlet end and then from the solenoid valve cavity into the valve chamber, and the distance and height difference between the solenoid valve cavity and the inlet end are significant, a deep, elongated hole needs to be made in the stopcock valve to connect the inlet end and the solenoid valve cavity.

[0003] Therefore, for some small stoves or applications with relatively low firepower requirements, there is an urgent need to devise a new type of plug valve that can effectively reduce its size and weight, and can match the needs of applications with relatively low firepower. Ideally, the deep and long hole machining process could be eliminated. Utility Model Content

[0004] To at least partially solve the above-mentioned technical problems, this utility model proposes a small plug valve with a new structure.

[0005] The small plug valve proposed in this utility model is mainly designed to provide a single air outlet to achieve a single firepower output, which is suitable for applications with relatively low firepower requirements. To construct the single air outlet, the air inlet is directly connected to the valve cavity, which in turn connects to the solenoid valve cavity. The solenoid valve cavity is directly connected to the single air outlet. Thus, the air inlet is not directly connected to the solenoid valve cavity, eliminating the need for deep and long hole processing. At the same time, the airflow channel is improved and a single air outlet is formed, which effectively reduces the overall volume and weight of the plug valve.

[0006] Specifically, the technical solution of the small plug valve provided in this application is as follows: it includes a valve body, the valve body having an air inlet end, a valve cavity, and a solenoid valve cavity, the valve body also having a single air outlet end, the air inlet end being connected to the valve cavity, the valve cavity being connected to the solenoid valve cavity, and the solenoid valve cavity being connected to the single air outlet end.

[0007] Preferably, the bottom of the valve body is provided with a bottom cover, and a first connecting cavity is formed between the bottom of the valve body and the bottom cover. One end of the first connecting cavity is connected to the bottom of the valve cavity, and the other end of the first connecting cavity is connected to the inner end of the solenoid valve cavity.

[0008] Preferably, the valve body also has a recessed cavity at the bottom, which is connected to the inner end of the solenoid valve cavity, and the opening of the recessed cavity is connected to the first connecting cavity.

[0009] Preferably, a second connecting cavity is formed between the bottom of the valve body and the bottom cover, one end of the second connecting cavity is connected to the solenoid valve cavity, and the other end of the second connecting cavity is connected to a single air outlet.

[0010] Preferably, the first connecting cavity and the second connecting cavity are arranged close to each other and sealed apart, and a sealing structure is provided between the bottom cover and the bottom of the valve body along the outer periphery of the first connecting cavity and the second connecting cavity.

[0011] Preferably, the bottom cover is provided with a partition wall extending to the bottom of the valve body at the connection between the first connecting cavity and the second connecting cavity, and a first sealing gasket is provided between the partition wall and the bottom of the valve body to seal and separate the first connecting cavity and the second connecting cavity.

[0012] Preferably, the bottom cover has a surrounding wall disposed along the outer periphery of the first connecting cavity and the second connecting cavity, and a second sealing gasket is disposed between the surrounding wall and the bottom of the valve body to form the sealing structure.

[0013] Preferably, the first sealing gasket and the second sealing gasket are connected to form an integral structure.

[0014] Preferably, the concave cavity is located near the inner end of the solenoid valve cavity and is connected to the inner end of the solenoid valve cavity through the side wall of the concave cavity.

[0015] Preferably, the air inlet of the air inlet end is provided with a sealing element to partially block the air inlet.

[0016] Preferably, the air intake end has an air intake hole, and the diameter of the air intake hole is reduced to form a small-diameter air intake hole.

[0017] Beneficial effects:

[0018] The plug valve of this invention has a single outlet end, which can meet the needs of obtaining a small amount of firepower. Because the inlet end is not directly connected to the plug valve cavity, but directly connected to the valve cavity, the machining of deep and long holes is avoided. Since only a single outlet end needs to be constructed, the internal structure of the valve cavity can also be simplified, and the entire air path structure from the inlet end to the single outlet end is also relatively simple. As a result, the overall structure of the valve body can be effectively improved in terms of both volume and weight, so as to obtain a small plug valve that is relatively small in size, relatively light in weight, and meets the needs of use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the small plug valve of this utility model.

[0020] Figure 2 This is a three-dimensional structural diagram of the small plug valve of this utility model at the bottom (the bottom cover has been removed).

[0021] Figure 3 This is a three-dimensional structural diagram of the small plug valve of this utility model from the first position at the bottom (the bottom cover and sealing gasket have been removed).

[0022] Figure 4 This is a two-dimensional structural diagram of the small plug valve of this utility model at the bottom (the bottom cover and sealing gasket have been removed).

[0023] Figure 5 This is a cross-sectional view of the small plug valve of this utility model at the solenoid valve cavity.

[0024] In the diagram: 1. Valve body; 2. Inlet end; 3. Valve chamber; 4. Solenoid valve cavity; 5. Single outlet end; 6. Operating component; 7. Bottom cover; 8. First connecting cavity; 9. Recessed cavity; 10. Second connecting cavity; 11. Partition wall; 12. First sealing gasket; 13. Enclosure wall; 14. Second sealing gasket; 15. Sealing component; 16. First connecting hole; 17. Second connecting hole; 18. Third connecting hole. Detailed Implementation

[0025] The technical solutions of specific embodiments of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the teachings of the following embodiments are within the protection scope of this utility model.

[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more.

[0027] refer to Figure 1-5 The present invention discloses a small plug valve, comprising a valve body 1, which is die-cast and integrally formed with an air inlet 2, a valve cavity 3 and a solenoid valve cavity 4 during the die-casting process. The air inlet 2 is used for the entry of gas from an external pipeline, and the solenoid valve cavity 4 is used to house a solenoid valve (not shown) to control the opening and closing of the gas path.

[0028] To address the issue of achieving lower firepower requirements, the valve body 1 is integrally formed with a single exhaust end 5 during die casting. Furthermore, the air path structure, specifically the air path from the intake end 2 to the single exhaust end 5, features a direct connection between the intake end 2 and the valve cavity 3. However, in existing technologies, the intake end 2 is typically directly connected to the solenoid valve cavity 4. Since the intake end 2 is usually located far from the solenoid valve cavity 4 and their heights are unequal, a deep, angled hole needs to be machined after die casting to connect the intake end 2 and the solenoid valve cavity 4. Machining such a deep, angled hole is considered difficult in machining, resulting in high tool wear. This is mainly because the hole is deep and angled, leading to poor heat dissipation, easy tool wear, and requiring a high level of professional machining skill from the operator. This invention, by appropriately optimizing and modifying the air path structure as described above, solves the problem of avoiding the need for machining such a deep, angled hole. Meanwhile, because only a single air outlet 5 is provided, and the air path structure has been optimized and improved, the overall volume of the plug valve has been reduced and its weight has been effectively reduced, ultimately creating a truly small plug valve.

[0029] The specific structure of the small plug valve of this utility model will be described in detail below with reference to specific embodiments.

[0030] Example 1

[0031] refer to Figures 1-5 In this embodiment, a novel small plug valve is provided. The plug valve includes a valve body 1 with an inlet end 2 connected to an external gas source for introducing fuel gas. The valve body 1 also has a valve cavity 3, which houses a valve core (not shown). In use, the valve cavity 3 is generally vertically oriented. In this embodiment, the valve cavity 3 is positioned close to and substantially perpendicular to the inlet end 2; in this case, the inlet end 2 can be understood as being located at the front of the valve cavity 3. To control the flow of gas, the valve body 1 also includes a solenoid valve cavity 4. The solenoid valve cavity 4 is generally parallel to the inlet end 2 but offset by a distance; that is, it is not close to the inlet end 2. In this embodiment, the solenoid valve cavity 4 can be understood as being located on the right side of the valve cavity 3. Based on this, in this embodiment, the valve body 1 also has a single gas outlet 5, which can provide a single gas source to the burner on the stove, thereby forming a single-ring flame combustion, thus meeting the needs of stoves with lower firepower requirements. In terms of layout, in this embodiment, the single gas outlet 5 can be understood as being located on the rear side of the valve cavity 3, equivalent to the air inlet 2 and the single gas outlet 5 being located on the front and rear sides of the valve cavity 3 respectively, maintaining a basically parallel vertical position, and slightly offset vertically. It should be noted that the aforementioned front-rear and left-right orientations can be referenced... Figure 1 The directions shown are up / down, front / back, and left / right.

[0032] External gas enters from the inlet end 2 and exits from the single outlet end 5. The overall gas path is constructed as follows: Specifically, the inlet end 2 is connected to the valve chamber 3, the valve chamber 3 is connected to the solenoid valve cavity 4, and the solenoid valve cavity 4 is connected to the single outlet end 5. Thus, after entering from the inlet end 2, the gas flows directly into the adjacent valve chamber 3. Then, under the control of the valve core in the valve chamber 3, it enters the solenoid valve cavity 4 on the right side of the valve chamber 3 (at this time, the solenoid valve is in the open state). Afterward, it flows from the solenoid valve cavity 4 to the single outlet end 5. In this process, the entire gas path structure is much simpler than that in existing technologies, and the path is significantly shortened. This simplifies the structure of the valve body 1. With the cooperation of the single outlet end 5, the volume of the valve body 1 can be made much smaller, and its weight is also significantly reduced, thus forming a truly small plug valve.

[0033] It should be noted that because a solenoid valve is needed to control the opening and closing of the air passage, the opening and closing of the solenoid valve requires an operating component 6. Therefore, a bottom cover 7 is provided at the bottom of the valve body 1. A first connecting cavity 8 is formed between the bottom of the valve body 1 and the bottom cover 7. One end of the first connecting cavity 8 is connected to the bottom of the valve cavity 3, and the other end of the first connecting cavity 8 is connected to the inner end of the solenoid valve cavity 4. At the same time, a concave cavity 9 is also formed at the bottom of the valve body 1. The concave cavity 9 is located close to the inner end of the solenoid valve cavity 4, and the side of the concave cavity 9 is connected to the inner end of the solenoid valve cavity 4 through a third connecting hole 18. The opening of the concave cavity 9 is also connected to the first connecting cavity 8. Based on the configuration of the first connecting cavity 8 and the concave cavity 9, during the gas flow process, the gas entering the valve cavity 3 flows out from the bottom and directly enters the first connecting cavity 8. At this time, the gas in the first connecting cavity 8 enters the concave cavity 9. The operating member 6 is housed in the first connecting cavity 8, and the contact end of the operating member 6 is located in the concave cavity 9. When the contact end abuts against the solenoid valve switch end in the solenoid valve cavity 4, the solenoid valve is turned on, and the gas enters the solenoid valve cavity 4 from the concave cavity 9. In this embodiment, the concave cavity 9 is constructed as a cuboid structure, which can well accommodate the contact end.

[0034] Because there is a certain distance between the solenoid valve cavity 4 and the single gas outlet 5 in actual construction, a second connecting cavity 10 is also constructed between the bottom of the valve body 1 and the bottom cover 7 to realize the connection between the solenoid valve cavity 4 and the single gas outlet 5. One end of the second connecting cavity 10 is connected to the solenoid valve cavity 4 through the first connecting hole 16, and the other end of the second connecting cavity 10 is connected to the single gas outlet 5 through the second connecting hole 17. In this way, the gas in the solenoid valve cavity 4 can directly enter the single gas outlet 5 through the second connecting cavity 10, thereby completing the flow of gas in the valve body 1.

[0035] It should be noted that leakage is not allowed during the actual gas flow process. Therefore, the first connecting cavity 8 and the second connecting cavity 10 are arranged close to each other and sealed apart. A sealing structure is provided between the bottom cover 7 and the bottom of the valve body 1 along the outer periphery of the first connecting cavity 8 and the second connecting cavity 10. Specifically, in this embodiment, the bottom cover 7 has a partition wall 11 extending to the bottom of the valve body 1 at the connection between the first connecting cavity 8 and the second connecting cavity 10. A first sealing gasket 12 is provided between the partition wall 11 and the bottom of the valve body 1 to seal and separate the first connecting cavity 8 and the second connecting cavity 10. The bottom cover 7 has a surrounding wall 13 arranged along the outer periphery of the first connecting cavity 8 and the second connecting cavity 10. A second sealing gasket 14 is provided between the surrounding wall 13 and the bottom of the valve body 1 to form the sealing structure. Further, the first sealing gasket 12 and the second sealing gasket 14 are connected to form an integral structure. Based on this, the first connecting cavity 8 and the second connecting cavity 10 are sealed and separated from each other, and the gas in the two connecting cavities is not connected and will not mix. Furthermore, due to the aforementioned sealing structure, there will be no leakage of gas from each connecting cavity. In this embodiment, the first connecting cavity 8 and the second connecting cavity 10 can be sealed and separated mainly by the cooperation of the partition wall 11 and the first sealing gasket 12. The partition wall 11 is directly provided on the bottom cover 7 and can be formed together with the bottom cover 7, simplifying the structure and facilitating molding.

[0036] In practical use, if the orifice diameter of the air inlet 2 is the same as that of the existing air inlet, the air intake volume will be relatively large. However, for situations where the firepower requirement is relatively small, such a large air intake volume would be wasteful. Therefore, in this embodiment, the air inlet of the air inlet 2 is provided with a sealing member 15 to partially block the air inlet. After the sealing member 15 is set, the diameter of the air inlet can be reduced, and the air intake volume is reduced, which can meet the needs of applications with a smaller firepower requirement.

[0037] Example 2

[0038] Unlike Embodiment 1, the air intake end 2 has an air intake hole, and the diameter of the air intake hole is reduced to form a small-diameter air intake hole. That is to say, compared with the existing air intake holes, the diameter of the air intake hole in this application is smaller than that of the existing air intake holes. The main purpose of this is to reduce the air intake volume and meet the needs of applications with smaller firepower requirements.

[0039] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A small plug valve, comprising a valve body, the valve body having an air inlet end, a valve chamber, and a solenoid valve cavity, characterized in that, The valve body also has a single air outlet, the air inlet is connected to the valve cavity, the valve cavity is connected to the solenoid valve cavity, and the solenoid valve cavity is connected to the single air outlet.

2. The miniature plug valve according to claim 1, characterized in that, The valve body is provided with a bottom cover, and a first connecting cavity is formed between the bottom of the valve body and the bottom cover. One end of the first connecting cavity is connected to the bottom of the valve cavity, and the other end of the first connecting cavity is connected to the inner end of the solenoid valve cavity.

3. The miniature plug valve according to claim 2, characterized in that, The valve body also has a recessed cavity at the bottom, which is connected to the inner end of the solenoid valve cavity, and the opening of the recessed cavity is connected to the first connecting cavity.

4. The miniature plug valve according to claim 2 or 3, characterized in that, A second connecting cavity is also formed between the bottom of the valve body and the bottom cover. One end of the second connecting cavity is connected to the solenoid valve cavity, and the other end of the second connecting cavity is connected to a single air outlet.

5. The miniature plug valve according to claim 4, characterized in that, The first connecting cavity and the second connecting cavity are arranged close to each other and sealed apart. A sealing structure is provided between the bottom cover and the bottom of the valve body along the outer periphery of the first connecting cavity and the second connecting cavity.

6. The miniature plug valve according to claim 5, characterized in that, The bottom cover has a partition wall extending to the bottom of the valve body at the connection between the first connecting cavity and the second connecting cavity. A first sealing gasket is provided between the partition wall and the bottom of the valve body to seal and separate the first connecting cavity and the second connecting cavity.

7. The miniature plug valve according to claim 6, characterized in that, The bottom cover has a surrounding wall arranged along the outer periphery of the first connecting cavity and the second connecting cavity, and a second sealing gasket is provided between the surrounding wall and the bottom of the valve body to form the sealing structure.

8. The miniature plug valve according to claim 1, characterized in that, The air inlet of the air intake end is equipped with a sealing element to partially block the air inlet.

9. The miniature plug valve according to claim 1, characterized in that, The air intake end has an air intake hole, and the diameter of the air intake hole is reduced to form a small-diameter air intake hole.

10. The miniature plug valve according to claim 3, characterized in that, The concave cavity is located near the inner end of the solenoid valve cavity and is connected to the inner end of the solenoid valve cavity through the side wall of the concave cavity.

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