Cock valve and gas grill

Abstract

The present invention discloses a plug valve, comprising: a valve core, the air inlet part of which includes a plurality of air inlet holes with different apertures arranged at intervals in the circumferential direction of the valve core; a valve body, the valve core is arranged in the valve body and can rotate relative to the valve body, the valve body is provided with an air inlet channel, and the air inlet channel can be simultaneously butted and communicated with two adjacent air inlet holes; a valve cover, which is connected to the valve body, the valve cover is movably connected with a valve rod, a plurality of gear slots are circumferentially distributed on the inner top surface of the valve cover, the valve rod is provided with a block matching the gear slot, and an elastic reset assembly abutted against the valve rod is arranged in the valve core. When the block is placed in the gear slot, the air inlet channel is butted and communicated with at most two air inlet holes. The present invention can combine more gears than the number of air inlet holes, and all gears are determined by the relative positions of the block and the gear slot, so as to realize the step adjustment of the plug valve, thereby providing users with a variety of gear selections. At the same time, the present invention also provides a gas grill applying the above plug valve.

Description

Technical Field

[0001] The invention relates to the field of gas appliances, in particular to a plug valve and a gas oven. Background Art

[0002] With the development of science, people have a deeper understanding of the requirements for barbecue, and have further refined the heat of different ingredients. Existing gas grills mainly control the flow of gas through a plug valve to achieve the purpose of controlling the firepower of the burner. However, since the plug valves of existing gas grills are all set to stepless adjustment, it is difficult to grade the firepower of the gas grill, and users can only grill the ingredients based on experience. Summary of the invention

[0003] The invention aims to provide a plug valve to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The plug valve according to the first aspect of the present invention comprises:

[0005] A valve core, wherein an air cavity is provided therein, the valve core is provided with an air inlet portion and an air outlet portion connected to the air cavity, the air inlet portion comprises a plurality of air inlet holes arranged at intervals in the circumferential direction of the valve core, and the apertures of all the air inlet holes decrease in sequence from one end of the air inlet portion to the other end of the air inlet portion;

[0006] A valve body, wherein the valve core is arranged in the valve body and can rotate relative to the valve body, the valve body is provided with an air inlet passage connected to the air inlet portion and an air outlet passage connected to the air outlet portion, and the air inlet passage can be connected to any two adjacent air inlet holes at the same time;

[0007] A valve cover is connected to the top of the valve body, and the valve cover is movably connected with a valve stem. The valve stem is provided with a clamping portion that is clamped with the valve core, so that the valve stem can drive the valve core to rotate within the valve body; a plurality of gear slots are distributed circumferentially on the inner top surface of the valve cover, the valve stem is provided with a clamping block that matches the gear slot, and an elastic reset component that abuts against the valve stem is provided in the valve core, and the elastic force direction of the elastic reset component points to the inner top surface of the valve cover, and when the clamping block is placed in any one of the gear slots, the air inlet passage is connected to at most two of the air inlet holes.

[0008] The plug valve according to the embodiment of the present invention has at least the following beneficial effects: The user can control the relative angle between the valve core and the valve body by rotating the valve stem, so as to control the gas output of the plug valve. Since the air inlet channel of the valve body can be docked and communicated with any two adjacent air inlet holes at the same time, the present invention can combine more gears than the number of air inlet holes, and all gears are determined by the relative positions of the clamping blocks and the gear slots. Once the user rotates the clamping block on the valve stem to the position of any gear slot, under the elastic force of the elastic reset assembly, the clamping block can be temporarily placed in this gear slot to achieve the step-less adjustment of the plug valve, thereby providing the user with a variety of gear selections to meet the different firepower requirements of the user; In addition, since the plug valve uses the air inlet part of the valve core to adjust the firepower, the plug valve can cut off the circulation with the gas supply source when it is not working, thereby effectively reducing the risk of gas leakage.

[0009] According to some embodiments of the present invention, the air inlet hole with the largest aperture is called the limit air inlet hole, and all the other air inlet holes are called adjustment air inlet holes. Each adjustment air inlet hole is provided with a sunk platform on the outer peripheral surface of the valve core, and the diameter of the sunk platform is larger than the diameter of the corresponding adjustment air inlet hole. The setting of the sunk platform can expand its air inlet range without changing the aperture of the adjustment air inlet hole, so as to facilitate the docking and communication of the air inlet channel with two adjacent air inlet holes at the same time.

[0010] According to some embodiments of the present invention, the side wall of each gear slot is an inclined surface or an arc surface, so that the bottom area of the gear slot is smaller than the top area of the gear slot. Through the above setting, when the clamping block is placed in the gear slot, under the action of the inclined surface or the arc surface, the user only needs to slightly rotate the valve stem with a little force to rotate the clamping block out of the gear slot, so as to facilitate the adjustment of the gear.

[0011] According to some embodiments of the present invention, an opening groove is provided at the top of the valve core, the clamping part is clamped in the opening groove, and the elastic reset assembly extends into the opening groove, so that the valve stem can move along the setting direction of the opening groove, and the elastic reset assembly can provide an elastic force towards the valve cover for the valve stem.

[0012] According to some embodiments of the present invention, the valve core is provided with a bearing platform facing the valve cover, the valve stem is connected with a card, the card is provided with the clamping block, and a first spring is arranged between the bearing platform and the card. The first spring can provide an elastic force towards the valve body for the valve core, further enhancing the sealing performance between the valve core and the valve body, thereby effectively reducing the risk of gas leakage.

[0013] According to some embodiments of the present invention, in order to prevent children from accidentally triggering the cock valve, first limiting blocks and second limiting blocks are circumferentially distributed on the inner top surface of the valve cover. The first limiting blocks and the second limiting blocks are arranged at intervals and jointly form a child lock interval capable of accommodating the latch blocks. All the gear slots are located outside the child lock interval. The limiting height of the first limiting blocks is less than the limiting height of the second limiting blocks, so that the latch blocks can cross the first limiting blocks and enter the gear interval formed by a plurality of the gear slots, thereby releasing the child lock.

[0014] According to some embodiments of the present invention, the number of the air outlet channels is two. The two air outlet channels are a combustion air outlet channel and an ignition air outlet channel respectively. The end of the combustion air outlet channel is connected with a gas nozzle, and the end of the ignition air outlet channel is connected with a pilot tube. The end of the pilot tube is connected with an igniter to ignite the gas.

[0015] According to some embodiments of the present invention, in order to realize the air outlet of the cock valve, the number of the air outlet parts is two. The two air outlet parts are a combustion air outlet hole and an ignition air outlet hole respectively. The combustion air outlet hole penetrates through to the bottom surface of the valve core, and the combustion air outlet hole is communicated with the combustion air outlet channel. The ignition air outlet hole penetrates through to the outer peripheral surface of the valve core, and the ignition air outlet hole is butt-connected and communicated with the ignition air outlet channel.

[0016] According to some embodiments of the present invention, in order to remotely control the igniter, the valve cover is connected with an ignition excitation device, and the ignition excitation device is electrically connected with the igniter.

[0017] The gas grill according to the second aspect embodiment of the present invention includes a burner head, a barbecue chamber and the above-mentioned cock valve. The cock valve is connected with the burner head, and the burner head is arranged in the barbecue chamber.

[0018] The gas grill according to the embodiment of the present invention has at least the following beneficial effects: Since the gas grill has multiple firepower gears, it can meet the different firepower requirements of users.

[0019] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0021] Figure 1It is a schematic three-dimensional structure diagram of the cock valve according to the embodiment of the present invention;

[0022] Figure 2 is Figure 1 The top view of the cock valve shown;

[0023] Figure 3 is Figure 1 The front view of the cock valve shown;

[0024] Figure 4 is Figure 2 The sectional view of the cock valve along the A-A section line shown;

[0025] Figure 5 It is a three-dimensional exploded view of the cock valve according to the embodiment of the present invention;

[0026] Figure 6 It is a schematic three-dimensional structure diagram of the valve core according to the embodiment of the present invention;

[0027] Figure 7 It is a structural diagram of the valve cover according to the embodiment of the present invention.

[0028] In the attached drawings: 100-valve core, 200-valve body, 300-valve cover, 110-connection section, 120-air supply section, 111-opening groove, 112-bearing platform, 121-air cavity, 122-air inlet hole, 1221-sunken platform, 123-combustion air outlet hole, 124-ignition air outlet hole, 1241-groove, 210-inner cavity, 220-air inlet channel, 230-combustion gas outlet channel, 240-ignition gas outlet channel, 231-gas nozzle, 400-pilot tube, 510-igniter, 700-valve rod, 710-clamping part, 101-mounting hole, 600-elastic reset component, 610-valve needle, 620-second spring, 630-spring retainer, 640-O-shaped sealing ring, 310-gear slot, 720-card, 721-block, 320-first limit block, 330-second limit block, 301-child lock interval, 800-first spring, 520-ignition excitation device, 521-piezoelectric ceramic, 522-hammer, 523-trigger spring. Detailed implementation manners

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the attached drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the attached drawings are exemplary and are only used to explain the present invention and cannot be understood as a limitation to the present invention.

[0030] In the description of the present invention, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0031] In the description of the present invention, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, words such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0033] According to the cock valve of the first aspect embodiment of the present invention, it includes a valve core 100, a valve body 200 and a valve cover 300, and the structure of the valve core 100 is as Figure 6As shown, the valve core 100 is an irregular cone. The valve core 100 includes two sections, specifically the connection section 110 located in the upper part and the air supply section 120 located in the lower part. The connection section 110 is provided with an opening groove 111. A bearing platform 112 is formed between the connection section 110 and the air supply section 120, and the bearing platform 112 is located below the opening groove 111. An air cavity 121 is provided inside the valve core 100, and the air cavity 121 is located inside the air supply section 120. The air supply section 120 is provided with an intake part and an exhaust part communicating with the air cavity 121. The intake part includes a plurality of intake holes 122 arranged at intervals in the circumferential direction of the valve core 100. The diameters of all the intake holes 122 gradually decrease from one end of the intake part to the other end of the intake part. The intake hole 122 with the largest diameter is called the limit intake hole, and all the other intake holes 122 are called adjustment intake holes. Each adjustment intake hole is provided with a counterbore 1221 on the outer peripheral surface of the valve core 100. The diameter of the counterbore 1221 is larger than the diameter of the corresponding adjustment intake hole, so as to expand the intake range of the adjustment intake hole without changing the diameter of the adjustment intake hole. The number of the exhaust parts is two. The two exhaust parts are a combustion exhaust hole 123 and an ignition exhaust hole 124 respectively. The combustion exhaust hole 123 penetrates to the bottom surface of the valve core 100, and the ignition exhaust hole 124 penetrates to the outer peripheral surface of the valve core 100. And the ignition exhaust hole 124 is provided with a groove 1241 on the outer peripheral surface of the valve core 100. The groove 1241 extends along the circumferential direction of the valve core 100, and the area of the groove 1241 is larger than the flow-through area of the ignition exhaust hole 124, so as to expand the exhaust range of the ignition exhaust hole 124 without changing the diameter of the ignition exhaust hole 124.

[0034] As Figure 2 , Figure 4 and Figure 5As shown, the valve body 200 is provided with an inner cavity 210 matching the air supply section 120 of the valve core 100, the air supply section 120 of the valve core 100 is arranged in the inner cavity 210 of the valve body 200 and can rotate relative to the valve body 200, and the valve body 200 is provided with an air inlet channel 220 connected to the air inlet part and an air outlet channel connected to the air outlet part. Specifically, there are two gas outlet channels, which are divided into a combustion gas outlet channel 230 and an ignition gas outlet channel 240. The end of the combustion gas outlet channel 230 is connected to a gas nozzle 231, and the combustion gas outlet hole 123 is kept in communication with the combustion gas outlet channel 230, so that the gas flowing out of the combustion gas outlet hole 123 can all flow into the combustion gas outlet channel 230 and be discharged to the outside through the gas nozzle 231; the end of the ignition gas outlet channel 240 is connected to an ignition tube 400, and the end of the ignition tube 400 is connected to an igniter 510, and the igniter 510 is used to ignite the gas, and the ignition gas outlet hole 124 is connected to the ignition gas outlet channel 240, so that when the valve core 100 is rotated to a specified angle, the ignition gas outlet hole 124 is connected to the ignition gas outlet channel 240. The number of the air intake channel 220 is one, and the air intake channel 220 is used to connect to a gas supply source (not shown in the drawings). The air intake channel 220 can not only be connected to the limiting air intake hole individually, but can also be connected to any two adjacent air intake holes 122 at the same time.

[0035] It should be noted that when the air inlet channel 220 is connected to the air inlet part, the air inlet flow rate of the stopcock should follow the following rule: Assuming that the number of the air inlet holes 122 is three, the flow area of ​​the limiting air inlet hole is 35 units, and the flow areas of all the regulating air inlet holes are 10 units and 5 units respectively, when the air inlet channel 220 is connected to the limiting air inlet hole alone, the air inlet flow rate at this time varies with the coverage rate X between the air inlet channel 220 and the limiting air inlet hole, and its value is 35KX units, and the maximum value is 35K units, where K is the flow rate of the gas source; when the air inlet channel 220 is connected to the limiting air inlet hole alone, the air inlet flow rate at this time varies with the coverage rate X between the air inlet channel 220 and the limiting air inlet hole, and its value is 35KX units, and the maximum value is 35K units, where K is the flow rate of the gas source; When the air inlet channel 220 is connected to the limiting air inlet hole and the regulating air inlet hole, if the effective flow area of ​​the sink 1221 is not less than the flow area of ​​the corresponding regulating air inlet hole, the coverage rate between the air inlet channel 220 and the regulating air inlet hole can be regarded as 100%, and the air intake flow rate at this time is (35X+10)·K units. If the effective flow area of ​​the sink 1221 is less than the flow area of ​​the corresponding regulating air inlet hole, the ratio of the two is set to Y, and the air intake flow rate at this time is (35X+10Y)·K units. When the air inlet channel 220 is connected to the two regulating air inlets at the same time, the air intake flow rate at this time is (10Y 1 +5Y 2) · K units, where Y 1 and Y 2 are their respective ratios, and the maximum values of Y 1 and Y 2 are both 1.

[0036] As Figure 1 , Figure 5 and Figure 7 shown, a valve cover 300 is connected to the top of the valve body 200. The valve cover 300 is movably connected to a valve rod 700. The valve rod 700 is used to install a knob (not shown in the drawings). The valve rod 700 has degrees of freedom of axial movement and axial rotation. The valve rod 700 is provided with a clamping portion 710. The clamping portion 710 can be selected as a clamping pin. The clamping portion 710 can be clamped in an opening groove 111 of the valve core 100, so that in addition to being able to move along the setting direction of the opening groove 111, the valve rod 700 can also drive the valve core 100 to rotate in the valve body 200. In order to achieve elastic reset of the valve rod 700, an installation hole 101 communicating with the connection section 110 and the air supply section 120 is provided inside the valve core 100. An elastic reset assembly 600 is provided in the installation hole 101. The elastic reset assembly 600 includes a valve needle 610, a second spring 620, a spring retainer 630, and an O-ring 640. The valve needle 610 passes through the installation hole 101. The valve needle 610 is connected with the O-ring 640 at one end located in the air supply section 120. The valve needle 610 located in the connection section 110 is sleeved with the second spring 620. The valve needle 610 is fixed with the spring retainer 630 on one side located in the connection section 110. At this time, both ends of the second spring 620 respectively abut against the spring retainer 630 and the connection section 110, and provide an elastic force towards the valve cover 300 for the valve needle 610. Since the valve needle 610 can extend into the opening groove 111, the elastic reset assembly 600 can provide an elastic force towards the valve cover 300 for the valve rod 700 to achieve elastic reset of the valve rod 700. It can be understood that the present invention does not limit the structure of the elastic reset assembly 600. As long as the elastic reset assembly 600 can provide an elastic force towards the valve cover 300 for the valve rod 700, no matter what structure the elastic reset assembly 600 is, it belongs to the protection scope of the present invention.

[0037] Meanwhile, a plurality of gear slots 310 are circumferentially distributed on the inner top surface of the valve cover 300. A card 720 is connected to the valve stem 700. The card 720 is provided with a clamping block 721 that matches the gear slot 310. When the clamping block 721 is placed in any one of the gear slots 310, the air inlet passage 220 is in butt-connection and communication with at most two of the air inlet holes 122. The user can control the relative angle between the valve core 100 and the valve body 200 by rotating the knob, so as to control the air output of the plug valve. Since the apertures of all the air inlet holes 122 gradually decrease from one end of the air inlet part to the other end of the air inlet part, and the air inlet passage 220 of the valve body 200 can be in butt-connection and communication with any two adjacent air inlet holes 122 at the same time, the present invention can combine more gears than the number of the air inlet holes 122, and all the gears are determined by the relative positions of the clamping block 721 and the gear slot 310. Once the user rotates the clamping block 721 on the valve stem 700 to the position of any one of the gear slots 310, under the elastic force of the elastic reset assembly 600, the clamping block 721 can be temporarily placed in the gear slot 310 to realize the step adjustment of the plug valve, thereby providing the user with a variety of gear selections to meet the different firepower requirements of the user.

[0038] It should be noted that the gears of the plug valve are sequentially decreased according to the firepower level, that is, when the user starts from the zero position, the more the knob is rotated, the smaller the firepower of the plug valve is. If the number of the air inlet holes 122 is three, the gears of the plug valve can be divided into five gears. When the user adjusts the plug valve to the maximum firepower gear, at this time, the air inlet passage 220 of the valve body 200 is independently and completely communicated with the air inlet hole 122 with the largest aperture; when the user adjusts the plug valve to the minimum firepower gear, at this time, the air inlet passage 220 of the valve body 200 is independently and completely communicated with the air inlet hole 122 with the smallest aperture; when the user adjusts the plug valve to other firepower gears, at this time, the air inlet passage 220 of the valve body 200 is simultaneously communicated with two adjacent air inlet holes 122.

[0039] Such as Figure 7As shown, in some embodiments of the present invention, in order to prevent children from accidentally triggering the cock valve, first limit blocks 320 and second limit blocks 330 are circumferentially distributed on the inner top surface of the valve cover 300. The first limit blocks 320 and the second limit blocks 330 are arranged at intervals and jointly form a child lock area 301 that can accommodate the latch 721. All the gear slots 310 are located outside the child lock area 301, and the limit height of the first limit blocks 320 is less than the limit height of the second limit blocks 330. When the latch 721 is located within the child lock area 301, since the first limit blocks 320 and the second limit blocks 330 limit the rotation of the latch 721, the user cannot rotate the knob. The user can only rotate the knob while pressing it to enable the latch 721 to cross the first limit blocks 320 and enter the gear range formed by a plurality of the gear slots 310 to release the child lock.

[0040] In some embodiments of the present invention, the side wall of each gear slot 310 is an inclined surface or a curved surface, so that the bottom area of the gear slot 310 is smaller than the top area of the gear slot 310. When the latch 721 is placed in the gear slot 310, under the action of the inclined surface or the curved surface, the user only needs to slightly rotate the knob with a little force to rotate the latch 721 away from the gear slot 310 for easy adjustment of the gear.

[0041] As Figure 4 and Figure 5 As shown, in some embodiments of the present invention, a first spring 800 is provided between the bearing platform 112 and the card 720. The two ends of the first spring 800 respectively abut against the bearing platform 112 and the card 720. The first spring 800 can provide an elastic force for pressing the valve core 100 against the valve body 200, further enhancing the sealing performance between the valve core 100 and the valve body 200, thereby effectively reducing the risk of gas leakage.

[0042] As Figure 3As shown, in some embodiments of the present invention, in order to remotely control the igniter 510, the valve cover 300 is connected with an ignition excitation device 520, and the ignition excitation device 520 is electrically connected to the igniter 510. The ignition excitation device 520 includes a piezoelectric ceramic 521, a hammer 522 and a trigger spring 523 arranged in sequence. The user can move the hammer 522 to make the trigger spring 523 in an energy storage state. The hammer 522 can strike the piezoelectric ceramic 521 under the elastic force of the trigger spring 523 to complete a pulse. When this pulse is fed back to the igniter 510, the igniter 510 starts to ignite. It can be understood that the present invention does not limit the structure of the ignition excitation device 520. As long as the ignition excitation device 520 can remotely control the igniter 510, no matter what structure the ignition excitation device 520 is, it belongs to the protection scope of the present invention.

[0043] The gas grill according to the second aspect embodiment of the present invention includes a cock according to the first aspect embodiment of the present invention, and further includes a burner (not shown in the drawings) and a barbecue chamber (not shown in the drawings). The cock is connected to the burner, and the burner is arranged in the barbecue chamber. When the user starts the cock, the cock can transport the gas from the gas supply source to the burner to realize the ignition of the burner, and the burner can continuously provide heat source for the food materials in the barbecue chamber during operation. Since the gas grill adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0044] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. Plug valve, It is characterized in that include: A valve core (100) is provided with an air cavity (121) therein, the valve core (100) is provided with an air inlet portion and an air outlet portion connected to the air cavity (121), the air inlet portion comprises a plurality of air inlet holes (122) arranged at intervals in the circumferential direction of the valve core (100), and the apertures of all the air inlet holes (122) decrease in sequence from one end of the air inlet portion to the other end of the air inlet portion; A valve body (200), wherein the valve core (100) is arranged in the valve body (200) and can rotate relative to the valve body (200), and the valve body (200) is provided with an air inlet channel (220) connected to the air inlet portion and an air outlet channel connected to the air outlet portion, and the air inlet channel (220) can be connected to any two adjacent air inlet holes (122) at the same time; A valve cover (300) is connected to the top of the valve body (200), the valve cover (300) is movably connected to a valve stem (700), the valve stem (700) is provided with a clamping portion (710) clamped with the valve core (100), so that the valve stem (700) can drive the valve core (100) to rotate in the valve body (200); a plurality of gear slots (310) are distributed on the circumference of the inner top surface of the valve cover (300), the valve stem (700) is provided with a clamping block (721) matching the gear slots (310), and an elastic reset component (600) abutting against the valve stem (700) is provided in the valve core (100), and the elastic force direction of the elastic reset component (600) points to The inner top surface of the valve cover (300) is such that when the block (721) is placed in any one of the gear position slots (310), the air inlet passage (220) is connected to and butted against at most two of the air inlet holes (122); the inner top surface of the valve cover (300) is circumferentially distributed with a first limit block (320) and a second limit block (330); the first limit block (320) and the second limit block (330) are arranged at intervals and together form a child lock section (301) capable of accommodating the block (721); all of the gear position slots (310) are located outside the child lock section (301); and the limit height of the first limit block (320) is smaller than the limit height of the second limit block (330).

2. The plug valve according to claim 1, Features: The air inlet hole (122) with the largest aperture is called a limiting air inlet hole, and all other air inlet holes (122) are called regulating air inlet holes. Each regulating air inlet hole is provided with a sink (1221) on the outer peripheral surface of the valve core (100), and the diameter of the sink (1221) is larger than the diameter of the corresponding regulating air inlet hole.

3. The plug valve according to claim 1, Features: The side walls of each of the gear position slots (310) are inclined surfaces or curved surfaces, so that the bottom area of ​​the gear position slot (310) is smaller than the top area of ​​the gear position slot (310).

4. The plug valve according to claim 1, Features: An opening groove (111) is provided at the top of the valve core (100), the clamping portion (710) is clamped in the opening groove (111), and the elastic reset assembly (600) extends into the opening groove (111).

5. The plug valve according to claim 4, wherein: The valve core (100) is provided with a bearing platform (112) facing the valve cover (300), the valve rod (700) is connected with a card (720), the card (720) is provided with a clamping block (721), and a first spring (800) is arranged between the bearing platform (112) and the card (720).

6. The plug valve according to claim 1, wherein: The number of the air outlet channels is two. The two air outlet channels are respectively a combustion air outlet channel (230) and an ignition air outlet channel (240). The end of the combustion air outlet channel (230) is connected with a gas nozzle (231), the end of the ignition air outlet channel (240) is connected with a pilot tube (400), and the end of the pilot tube (400) is connected with an igniter (510).

7. The plug valve according to claim 6, wherein: The number of the air outlet parts is two. The two air outlet parts are respectively a combustion air outlet hole (123) and an ignition air outlet hole (124). The combustion air outlet hole (123) penetrates through to the bottom surface of the valve core (100), and the combustion air outlet hole (123) is kept in communication with the combustion air outlet channel (230). The ignition air outlet hole (124) penetrates through to the outer peripheral surface of the valve core (100), and the ignition air outlet hole (124) is in butt joint and communication with the ignition air outlet channel (240).

8. The plug valve according to claim 6, wherein: The valve cover (300) is connected with an ignition excitation device (520), and the ignition excitation device (520) is electrically connected with the igniter (510).

9. A gas grill, wherein, comprising the plug valve according to any one of claims 1 to 8, and further comprising: a burner head and a barbecue chamber. The plug valve is connected with the burner head, and the burner head is arranged in the barbecue chamber.

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