A multi-stage gas valve

Abstract

The utility model provides a kind of multi-gear gas valve, including valve seat and the valve cover being connected to the bottom of the valve seat, the valve cavity of lower end open is provided in the valve seat, the upper portion of the valve cavity is provided with gas outlet, the lateral wall of the valve cavity is provided with first connecting hole, second connecting hole, the first connecting hole, the second connecting hole place is communicated with air inlet, the valve core is rotatably installed in the valve cavity, the upper and lower sides of the valve core lateral wall are respectively provided with second air hole, arc slot that can be communicated with the first connecting hole, the second connecting hole, the first air hole is opened on the arc slot coaxial with the valve core, the inner hole that is communicated with the first air hole, the second air hole, the gas outlet is formed in the valve core.The utility model has the advantages that: setting double-channel structure, first connecting hole, second air hole this channel can be used simultaneously or used alone in double-channel, to adapt to different gas source.

Description

Technical Field

[0001] This utility model relates to a gas stove valve, and more particularly to a multi-position gas valve. Background Technology

[0002] A gas valve is a new type of safety device for gas pipeline projects. It is used to cut off, connect, and regulate the gas in the pipeline, and has good control characteristics and sealing performance.

[0003] Because of the different gas source pressures, the common gas sources include liquefied petroleum gas (LPG) and natural gas, which have different pressures. The gas valve in the existing technology has only one gas inlet channel, and the gas flow of this channel can only adapt to one gas source. That is, it can only use gas stoves that are adapted to the gas pressure of that gas source, and cannot be used for both LPG and natural gas. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a multi-position gas valve.

[0005] This utility model provides a multi-position gas valve, including a valve seat 1 and a valve cover 2 connected to the bottom of the valve seat 1. The valve seat 1 has a valve cavity with an open lower end. The upper part of the valve cavity has an air outlet 12. The side wall of the valve cavity has a first connecting hole 13 and a second connecting hole 14. The first connecting hole 13 and the second connecting hole 14 are connected to an air inlet 11. A valve core 5 is rotatably installed in the valve cavity. The upper and lower sides of the side wall of the valve core 5 are respectively provided with a second air hole 54 that can communicate with the first connecting hole 13 and an arc-shaped groove 52 that can communicate with the second connecting hole 14. A first air hole 53 is provided on the arc-shaped groove 52 that is coaxial with the valve core 5. The valve core 5 has an inner hole 55 that communicates with the first air hole 53, the second air hole 54 and the air outlet 12. The end of the valve core 5 is elastically provided with a valve stem 4 that passes through and abuts against the valve seat 2.

[0006] Furthermore, a mounting base 3 is installed at the bottom of the valve cover 2 to allow the valve stem 4 to pass through.

[0007] Furthermore, the central angle of the arc groove 52 is greater than or equal to 160 degrees and less than or equal to 300 degrees.

[0008] Furthermore, the second air holes 54 are located on the same radial plane and are equidistantly distributed. The second air holes 54 correspond vertically to the arc-shaped groove 52, and the diameter of the second air holes 54 gradually decreases.

[0009] Furthermore, the top of the valve core 5 is provided with a groove 51 for inserting the end of the valve stem 4, and the valve cover 2 is provided with a movable groove 21 for the end of the valve stem 4 to abut and move, and the inner wall of the movable groove 21 is provided with a limiting block 22 for limiting the end of the valve stem 4.

[0010] Furthermore, a stepped hole is provided inside the valve stem 4, and an adjusting screw 6 is screwed into the inner hole 55. A spring is connected between the adjusting screw 6 and the stepped hole.

[0011] Furthermore, the end of the adjusting screw 6 and the valve core 5 are frustoconical in shape, with the upper end smaller than the lower end.

[0012] The advantages of this utility model are as follows: It features a dual-channel structure, allowing for simultaneous or individual use of the first connecting hole and the second air hole, thus adapting to different gas sources; the first channel enters the outlet from the inlet, first connecting hole, second air hole, and inner hole, while the second channel enters the outlet from the inlet, second connecting hole, arc-shaped groove, first air hole, and inner hole, forming a multi-position gas rotary valve to accommodate liquefied petroleum gas (LPG) and natural gas; the second air hole is located within the angle range of the arc-shaped groove, and its diameter gradually decreases, thereby achieving variations in gas flow; pressing and rotating the valve stem causes the end of the stem to extend into the groove. Furthermore, after passing the limit block, the valve stem rotates the valve core through the groove. The arc groove of the valve core connects with the second connecting hole, and the air flow at this point remains unchanged. The second air hole of the valve core connects with the first connecting hole. The air flow varies depending on the second air hole. The air flow is the sum of the first and second air holes. The adjusting screw can adjust or block the air flow of the second channel. The end of the valve stem abuts against the movable groove, and the valve core fits against the valve cavity. The small hole in the inner hole can be blocked with the adjusting screw as needed, thereby blocking the arc groove, the first air hole, and the large hole on the lower side. The second air hole is used as the working hole. The air flow varies depending on the second air hole. The air flow is the sum of the second air holes. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model; Figure 2 This is the front view of the present invention; Figure 3 for Figure 2 AA section view; Figure 4 for Figure 3 BB section view; Figure 5 This is a partial perspective view of the present invention; Figure 6 This is a partial structural schematic diagram of the present invention; Figure 7 This is a schematic diagram of the valve core structure of this utility model; Figure 8 for Figure 3 Enlarged view of part C. Detailed Implementation

[0014] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0015] See Figures 1-8 This utility model provides a multi-position gas valve, including a valve seat 1 and a valve cover 2 connected to the bottom of the valve seat 1. The valve seat 1 has a valve cavity with an open lower end, and an outlet 12 is provided at the upper part of the valve cavity for connecting to a gas stove. The side wall of the valve cavity has a first connecting hole 13 and a second connecting hole 14, and an inlet 11 is connected to the first connecting hole 13 and the second connecting hole 14 for connecting to a gas pipe. A valve core 5 is rotatably installed in the valve cavity and fits against the valve cavity. The upper and lower sides of the side wall of the valve core 5 are respectively provided with a second air hole 54 that can communicate with the first connecting hole 13 and an arc-shaped groove 52 that can communicate with the second connecting hole 14. A first air hole 53 is provided on the arc-shaped groove 52 that is coaxial with the valve core 5. The valve core 5 is formed with the first air hole 53 and the second air hole 54. 4. The gas outlet 12 is connected to the inner hole 55, which has a dual-channel configuration. The first channel enters the gas outlet from the gas inlet, the first connecting hole, the second gas hole, and the inner hole. The second channel enters the gas outlet from the gas inlet, the second connecting hole, the arc groove, the first gas hole, and the inner hole. The second channel can be adjusted or blocked by the adjusting screw, thus forming a multi-position gas rotary valve to adapt to liquefied petroleum gas and natural gas. The dual channels can be used simultaneously or the first channel can be used alone to adapt to different gas sources. The inner hole is composed of a small hole in the middle connected to large holes on the upper and lower sides. The first gas hole is connected to the large hole on the lower side, and the second gas hole is connected to the large hole on the upper side. The end of the valve core 5 is elastically provided with a valve stem 4 that passes through and abuts against the valve seat 2. The bottom of the valve cover 2 is equipped with a mounting seat 3 that allows the valve stem 4 to pass through. The valve is installed on the gas stove through the mounting seat.

[0016] The central angle of the arc groove 52 is greater than or equal to 160 degrees and less than or equal to 300 degrees. Preferably, the central angle of the arc groove is 270 degrees, the cross-section of the arc groove is trapezoidal, and its opening end is large, forming a trumpet-shaped structure.

[0017] The second vents 54 are located on the same radial plane and are equidistantly distributed. The second vents 54 correspond vertically to the arc-shaped grooves 52, and the diameter of the second vents 54 gradually decreases. The second vents are located within the angular range of the arc-shaped grooves, and the diameter of the second vents gradually decreases, thereby realizing the change in the gas flow rate.

[0018] The valve core 5 has a groove 51 at its top end to accommodate the end of the valve stem 4. The valve cover 2 has a movable groove 21 inside to accommodate the end of the valve stem 4 abutting and moving. The inner wall of the movable groove 21 has a limiting block 22 to limit the end of the valve stem 4. The movable angle of the movable groove corresponds to the central angle of the arc groove. Pressing up and rotating the valve stem causes the end of the valve stem to extend into the groove and pass over the limiting block. The valve stem rotates the valve core through the groove. The arc groove of the valve core is connected to the second connecting hole, and the air passage at this point remains constant. The second air hole of the valve core is connected to the first connecting hole, and the air passage varies depending on the second air hole. The air passage is the sum of the first air hole and the second air hole.

[0019] See Figure 3 , Figure 8 The valve stem 4 has a stepped hole, and an adjusting screw 6 is screwed into the inner hole 55. A spring connects the adjusting screw 6 to the stepped hole. The adjusting screw can adjust or block the airflow of the large hole on the lower side of the valve cavity (i.e., the airflow of the second channel). The spring causes the valve core to tend to move away from the valve stem. The end of the valve stem abuts against the movable groove, and the valve core fits against the valve cavity. The small hole in the inner hole can be blocked with the adjusting screw as needed, thereby blocking the arc groove, the first air hole, and the large hole on the lower side. The second air hole is used as the working hole. The airflow of the second air hole varies with different second air holes. The airflow is the second air hole.

[0020] The end of the adjusting screw 6 and the valve core 5 are frustoconical in shape, with the upper end smaller than the lower end.

[0021] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-position gas valve, characterized in that: The device includes a valve seat and a valve cover connected to the bottom of the valve seat. The valve seat has a valve cavity with an open lower end. The upper part of the valve cavity has an air outlet. The side wall of the valve cavity has a first connecting hole and a second connecting hole. The first connecting hole and the second connecting hole are connected to an air inlet. A valve core is rotatably installed in the valve cavity. The upper and lower sides of the side wall of the valve core are respectively provided with a second air hole that can communicate with the first connecting hole and an arc-shaped groove that can communicate with the second connecting hole. The arc-shaped groove, which is coaxial with the valve core, has a first air hole. The valve core has an inner hole that communicates with the first air hole, the second air hole, and the air outlet. The end of the valve core is elastically provided with a valve stem that passes through and abuts against the valve seat.

2. The multi-position gas valve as described in claim 1, characterized in that: The bottom of the valve cover is fitted with a mounting base through which the valve stem passes.

3. The multi-position gas valve as described in claim 1, characterized in that: The central angle of the arc-shaped groove is greater than or equal to 160 degrees and less than or equal to 300 degrees.

4. The multi-position gas valve as described in claim 1, characterized in that: The second air holes are located on the same radial plane and are equidistantly distributed. The second air holes correspond vertically to the arc-shaped groove, and the diameter of the second air holes gradually decreases.

5. The multi-position gas valve as described in claim 1, characterized in that: The valve core has a groove at its top end to accommodate the end of the valve stem, and the valve cover has a movable groove inside to accommodate the end of the valve stem to abut and move. The inner wall of the movable groove has a limiting block to limit the end of the valve stem.

6. The multi-position gas valve as described in claim 1, characterized in that: The valve stem has a stepped hole, and an adjusting screw is screwed into the inner hole. A spring connects the adjusting screw to the stepped hole.

7. The multi-position gas valve as described in claim 6, characterized in that: The end of the adjusting screw and the valve core are frustum-shaped, with the upper end smaller than the lower end.

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