Plug valves and stove burners

Abstract

The present invention relates to the technical field of gas stoves, and more particularly to a plug valve and stove burner. The plug valve primarily comprises a valve body, a shutoff plate, and a stopper to form an anti-blocking structure. The first end of the shutoff plate is fixed to the valve body, and the second end of the shutoff plate extends into a flow hole of the stopper. When the stopper rotates relative to the valve body, the shutoff plate cuts the stopper, thereby clearing the flow hole and preventing blockage. The stove burner provided by the present invention, by utilizing the above-mentioned plug valve, can prevent blockage of the stopper's flow hole.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stoves, in particular to a plug valve and a stove burner. Background Art

[0002] Gas stoves are often used in daily life. The internal ventilation pipes of the stoves are prone to blockage, and the shutter inside the stove is particularly prone to blockage. Sealing grease is used between the shutter and the plug valve because of the need to seal. If the flow stage valve is directly realized by opening holes or grooves on the shutter, the flow hole on the shutter is easy to be blocked. Generally, the aperture of the opening on the shutter should be greater than 1.5mm to prevent it from being blocked. The minimum aperture of the flow hole on the traditional shutter is generally around 0.6mm, which is easy to be blocked. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the flow hole of the gas stove stopper is easily clogged, and to provide a plug valve and a stove burner that are anti-clogging.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A plug valve includes a valve body and a shutter. The shutter is arranged inside the valve body and can rotate around itself relative to the valve body. A plurality of flow holes arranged at intervals along the circumferential direction of the shutter are provided on the circumferential side surface of the shutter. The plug valve also includes a shutoff plate. Along the radial direction of the shutter, the first end of the shutoff plate is fixed to the valve body, and the second end of the shutoff plate at least partially extends into the flow hole of the shutter.

[0006] In this solution, the above-mentioned structural form is adopted. During the process of the closing member rotating relative to the valve body, the shut-off piece inserted into the flow hole of the closing member can also rotate relative to the closing member. The shut-off piece can scrape off part of the sealing grease located at the flow hole, thereby clearing the flow hole and preventing the flow hole from being blocked.

[0007] Furthermore, an annular groove extending along the circumferential direction of the closer is further provided on the outer peripheral surface of the closer, the annular groove being connected to all the flow holes, and the second end of the shut-off piece extending into the annular groove.

[0008] In this solution, the above-mentioned structural form is adopted to facilitate the switching of the shutoff piece between different flow holes. The second end of the shutoff piece extends into the annular groove, and the shutoff piece can perform a cutting movement when the shutter rotates, thereby playing a role in preventing blockage.

[0009] Furthermore, along the radial direction of the closer, the depth of the annular groove is smaller than the depth of the flow hole, and the second end of the intercepting piece is located radially outside the bottom of the annular groove.

[0010] In this solution, the above-mentioned structural form is adopted. The annular groove does not pass through the closure. The bottom of the annular groove can limit the intercepting piece, preventing the intercepting piece from extending into the closure excessively, thereby ensuring the normal rotation of the closure.

[0011] Furthermore, the end surface of the second end of the shut-off piece is an arc surface, and the shape of the arc surface matches the shape of the annular groove.

[0012] In this solution, the above-mentioned structural form is adopted, and the end face of the second end of the shut-off piece is set as an arc surface with the opening facing the annular groove. This can ensure that the shut-off piece can better rotate relative to the closing piece during the rotation of the closing piece to clear the blockage.

[0013] Furthermore, the transition between the end surface of the second end of the cut-off piece and the two circumferential side surfaces of the cut-off piece is a rounded corner.

[0014] In this solution, the above-mentioned structural form can prevent stress concentration at the transition point during the rotation of the shut-off piece relative to the closing element, thereby avoiding damage to the shut-off piece.

[0015] Furthermore, the first end of the shutoff piece is fixed in the air outlet of the valve body.

[0016] In this solution, the above-mentioned structural form is adopted, and the shut-off piece will partially block the flow hole. Therefore, while ensuring the same flow rate, the diameter of the flow hole needs to be set larger. The large-diameter flow hole is less likely to be blocked than the small-diameter flow hole, thereby further realizing the anti-blocking function.

[0017] Furthermore, the diameters of the plurality of flow holes are different from each other, and the thickness of the intercepting piece along the axial direction of the closer is smaller than the diameter of the flow hole with the smallest diameter.

[0018] In this solution, the above-mentioned structural form is adopted to prevent the intercepting piece from completely blocking the flow hole, thereby ensuring the normal flow of the gas.

[0019] Furthermore, the diameter of the air outlet of the valve body is larger than the diameter of the flow hole with the largest diameter.

[0020] In this solution, the above structural form is adopted to facilitate the transportation of gas.

[0021] A stove burner comprises the above-mentioned plug valve.

[0022] Furthermore, the stove burner is provided with a knob device, which includes a knob rod and a limiting structure. The knob rod is connected to the shutter and is used to drive the shutter, and the limiting structure is used to limit the rotation range of the shutter.

[0023] In this solution, the above-mentioned structural form is adopted, which is conducive to adjusting the rotation of the shutter and improving the safety of the device.

[0024] The positive progress effect of the present invention is:

[0025] During the rotation of the closer relative to the valve body, the shutoff piece inserted into the flow hole of the closer can also rotate relative to the closer. The shutoff piece can scrape off part of the sealing grease at the flow hole, thereby clearing the flow hole and preventing the flow hole from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the three-dimensional structure of a plug valve according to an embodiment of the present invention.

[0027] Figure 2 FIG. 1 is another schematic diagram of the three-dimensional structure of a plug valve according to an embodiment of the present invention.

[0028] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0029] Figure 4 To follow Figure 2 Schematic diagram of the cross-sectional structure of the plug valve taken along line BB.

[0030] Figure 5 FIG. 1 is a schematic diagram of the three-dimensional structure of a closer according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] Valve body 10

[0033] Vent 11

[0034] Closed child 20

[0035] Flow hole 21

[0036] Annular groove 22

[0037] Cut-off piece 30

[0038] Knob device 40

[0039] Knob rod 41

[0040] Limiting structure 42 DETAILED DESCRIPTION

[0041] The present invention is further described below by way of specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0042] This embodiment provides a stove burner, such as Figure 1-Figure 5 As shown, the stove burner includes a plug valve, which is used to control the ignition of the stove burner and can adjust the flame size of the stove burner to achieve multiple adjustments of the flame.

[0043] like Figure 2-Figure 5 As shown, the plug valve includes a valve body 10, a stopper 20, and a shutoff plate 30. The stopper 20 is disposed within the valve body 10 and can rotate relative to the valve body 10. A plurality of flow holes 21 of varying diameters are provided on the circumferential side of the stopper 20. The plurality of flow holes 21 are spaced sequentially from small to large along the circumferential direction of the stopper 20. The valve body 10 has an outlet hole 11. By rotating the stopper 20 to adjust the position of the flow holes 21, the various flow holes 21 of the stopper 20 align with the outlet hole 11 of the valve body 10, thereby controlling the gas flow and thus the flame. Along the radial direction of the stopper 20, the first end of the shutoff plate 30 is fixed to the valve body 10, and the second end of the shutoff plate 30 at least partially extends into the flow hole 21 of the stopper 20.

[0044] Specifically, the outer circumference of the shutter 20 is provided with a plurality of flow holes 21 of varying diameters, as needed, to meet the user's requirements for different firepower levels. Sealing grease is used to seal between the shutter 20 and the plug valve. In prior art, if a flow range valve were implemented directly by opening holes or grooves in the shutter 20, the flow holes 21 in the shutter 20 would easily become clogged. In this embodiment, the plug valve is provided with a shutoff plate 30. Since the shutoff plate 30 is fixed to the valve body 10, as the shutter 20 rotates relative to the valve body 10, the shutoff plate 30 cuts against the flow holes 21 of the shutter 20, scraping off some of the sealing grease located in the flow holes 21, thereby clearing the flow holes 21 and preventing them from becoming clogged.

[0045] like Figure 4 As shown, the first end of the intercepting piece 30 in this embodiment is fixed to the air outlet 11 of the valve body 10. To ensure that the intercepting piece 30 can effectively scrape off the sealing grease located at the flow hole 21, the intercepting piece 30 is fixedly connected to the valve body 10. The specific connection method can be welding, threaded connection, etc., to ensure the stability of the intercepting piece 30. At this time, the intercepting piece 30 located in the air outlet 11 partially blocks the flow hole 21. The actual flow rate passing through the flow hole 21 is reduced by the intercepting area of ​​the intercepting piece 30. Therefore, when the same flow rate is passing through, the diameter of the flow hole 21 needs to be set larger. A flow hole 21 with a larger diameter is less likely to be clogged than a flow hole 21 with a smaller diameter, thereby further achieving the anti-clogging function.

[0046] In other alternative embodiments, the shut-off piece 30 may also be fixed at other positions of the valve body 10 .

[0047] like Figure 5As shown, an annular groove 22 is provided on the outer circumference of the closure 20. The annular groove 22 extends along the circumference of the closure 20 and connects all the flow holes 21 on the closure 20. The second end of the intercepting piece 30 extends into the annular groove 22. The intercepting piece 30 can perform a cutting motion when the closure 20 rotates, thereby preventing blockage. The provision of the annular groove 22 in this embodiment facilitates the switching of the intercepting piece 30 between different flow holes 21, preventing interference with the wall of the flow hole 21, and making the rotation of the intercepting piece 30 relative to the closure 20 smoother, thereby facilitating the cleaning of the sealing grease in the flow holes 21.

[0048] Furthermore, in this embodiment, along the circumferential direction of the closer 20, the annular groove 22 does not penetrate the outer circumference of the closer 20, that is, the annular groove 22 does not form a complete circular ring on the outer circumferential surface of the closer 20. The specific surrounding range of the annular groove 22 on the outer circumferential surface of the closer 20 is set according to the number of flow holes 21 on the closer 20 and actual needs.

[0049] like Figure 5 As shown, along the radial direction of the shutter 20 , the depth of the annular groove 22 is smaller than the depth of the flow hole 21 , and the second end of the shutoff piece 30 is located radially outside the bottom of the annular groove 22 .

[0050] Specifically, the annular groove 22 does not penetrate the closure 20 in the radial direction. The bottom of the annular groove 22 can limit the intercepting piece 30 to prevent the intercepting piece 30 from extending into the closure 20, thereby ensuring the normal rotation of the closure 20.

[0051] In other alternative embodiments, the annular groove 22 may also pass through the closure 20 in the radial direction, and the shut-off piece 30 may be set longer and penetrate deeper into the interior of the closure 20, thereby cleaning more sealing grease and further improving the anti-clogging effect.

[0052] like Figure 5 As shown, the end surface of the second end of the shutoff piece 30 is an arcuate surface, the shape of which matches the shape of the annular groove 22. Specifically, the end surface of the second end of the shutoff piece 30 is configured as an arcuate surface with its opening facing the annular groove 22. This ensures that the shutoff piece 30 can better rotate relative to the closure 20 during the rotation of the closure 20, thereby clearing the blockage. In other embodiments, the end surface of the second end of the shutoff piece 30 can also be configured as other shapes to ensure that the shutoff piece 30 can rotate relative to the closure 20.

[0053] like Figure 5 As shown, the transition between the end face of the second end of the shutoff piece 30 and the two circumferential side surfaces of the shutoff piece 30 is rounded, which can prevent stress concentration at the transition during the rotation of the shutoff piece 30 relative to the shutter 20 and avoid damage to the shutoff piece 30.

[0054] like Figure 5 As shown, in this embodiment, in order to prevent the cutoff piece 30 from blocking the flow hole 21 and ensure the normal flow of gas, the thickness of the cutoff piece 30 is set to be smaller than the diameter of the flow hole 21 with the smallest diameter.

[0055] like Figure 3 As shown, in order to prevent the gas outlet 11 of the valve body 10 from being blocked and to facilitate the transportation of gas, the diameter of the gas outlet 11 is designed to be larger than the diameter of the flow hole 21 with the largest diameter.

[0056] like Figure 1 and Figure 2 As shown, the shutter 20 is also connected to the knob device 40 of the stove. The knob device 40 includes a knob rod 41 and a limiting structure 42. By adjusting the knob rod 41, the shutter 20 can be rotated so that the shutter 20 can rotate around itself relative to the valve body 10. The setting of the limiting structure 42 limits the rotation range of the shutter 20, thereby improving the safety of the stove.

[0057] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0058] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A plug valve comprising a valve body and a stopper, wherein the stopper is disposed within the valve body and is capable of rotating relative to the valve body. A plurality of flow holes are provided on the circumferential side of the stopper and are spaced apart along the circumferential direction of the stopper, wherein: The plug valve further comprises a shutoff piece, wherein a first end of the shutoff piece is fixed to the valve body along the radial direction of the closer, and a second end of the shutoff piece at least partially extends into the flow hole of the closer; The outer peripheral surface of the closer is further provided with an annular groove extending along the circumferential direction of the closer, the annular groove being connected to all the flow holes, and the second end of the shutoff piece extends into the annular groove; The first end of the cutoff piece is fixed in the air outlet hole of the valve body.

2. The plug valve according to claim 1, wherein Along the radial direction of the shutter, the groove depth of the annular groove is smaller than the hole depth of the flow hole, and the second end of the intercepting piece is located radially outside the groove bottom of the annular groove.

3. The plug valve according to claim 2, wherein: The end surface of the second end of the shut-off piece is an arc surface, and the shape of the arc surface matches the shape of the annular groove.

4. The plug valve according to claim 3, wherein The transition between the end surface of the second end of the cut-off piece and the two circumferential side surfaces of the cut-off piece is a rounded corner.

5. The plug valve according to claim 1, wherein The diameters of the plurality of flow holes are different from each other, and the thickness of the intercepting piece along the axial direction of the shutter is smaller than the diameter of the flow hole with the smallest diameter.

6. The plug valve according to claim 1, wherein The diameter of the air outlet of the valve body is larger than the diameter of the flow hole with the largest diameter.

7. A stove burner, characterized in that: The invention comprises a plug valve according to any one of claims 1 to 6.

8. The stove burner according to claim 7, characterized in that: The stove burner is provided with a knob device, which includes a knob rod and a limiting structure. The knob rod is connected to the shutter and is used to drive the shutter, and the limiting structure is used to limit the rotation range of the shutter.

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