Switching ball valve and gas appliance

Abstract

The application discloses a switch ball valve and a gas appliance. The switch ball valve comprises a valve body, an electromagnetic valve, a push mechanism and a first sealing ring. The valve body is provided with an air inlet channel, a permanent fire channel, a main fire channel and a main channel. The electromagnetic valve is connected to a thermocouple and used for opening or closing a channel opening connected between the air inlet channel and the main channel. The push mechanism is used for applying a pushing force to the electromagnetic valve under the action of an external force to open or close the channel opening or rotating under the action of an external force to adjust the air outlet amount of the main fire channel. The first sealing ring is sleeved outside the push mechanism and abuts against the sidewall of the main channel. When the push mechanism pushes the electromagnetic valve to open the channel opening, the permanent fire channel is in an air outlet state and the main fire channel is in a closed state. The switch ball valve can keep the permanent fire channel in the air outlet state when being opened, so that the thermocouple can obtain continuous and stable heat, and the closing stability of the electromagnetic valve is ensured, that is, the stability of the subsequent air inlet of the channel opening to the main fire channel is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a switch ball valve and a gas appliance. BACKGROUND

[0002] In some devices requiring gas combustion for heating, such as in a gas stove, a valve body is installed on the device to control the opening and closing or the flow size of the gas. In the initial stage, the valve body delivers gas by pressing down the rotating shaft, the combustion of the gas provides heat to the thermocouple to form a potential difference, and thus an electric signal is transmitted to the electromagnetic valve to attract the electromagnetic valve of the valve body to open the gas inlet.

[0003] In the prior art, since the valve body has only one gas outlet, the gas outlet adjusts the gas flow size under the rotation adjustment of the rotating shaft, which causes the heat provided to the thermocouple to be unstable, and thus the attraction of the thermocouple is unstable, ultimately affecting the stability of the gas supply. SUMMARY

[0004] To solve at least one problem existing in the prior art, according to one aspect of the present application, a switch ball valve is provided, comprising:

[0005] a valve body, the valve body is provided with an air inlet channel, a pilot flame channel, a main flame channel and a main channel, the air inlet channel, the pilot flame channel and the main flame channel are respectively connected with the main channel, and the pilot flame channel and the main flame channel are arranged on different sides of the valve body;

[0006] an electromagnetic valve connected to a thermocouple, the electromagnetic valve is arranged at one end of the main channel and used to open or close a channel opening connecting the air inlet channel and the main channel;

[0007] a pushing mechanism movably mounted at the other end of the main channel, used to apply a pushing force to the electromagnetic valve under the action of an external force to open or close the channel opening, or to rotate under the action of an external force to adjust the gas flow size of the main flame channel;

[0008] at least two first sealing rings, the first sealing rings are arranged outside the pushing mechanism and abut against the side wall of the main channel;

[0009] wherein, when the pushing mechanism pushes the electromagnetic valve to open the channel opening, the pilot flame channel is in a gas outlet state, and the main flame channel is in a closed state.

[0010] In some embodiments, the pushing mechanism comprises:

[0011] a rotating shaft, the rotating shaft is arranged to rotate relative to the valve body and extends outside the valve body;

[0012] A valve core is arranged in the main passage and includes a ball core and a sleeve, the ball core is used to adjust the air flow of the main fire passage, and the sleeve is used to drive the ball core to rotate;

[0013] A jacking rod is arranged in the ball core and the sleeve and is used to cooperate with the rotating shaft to apply a pushing force to the electromagnetic valve;

[0014] An elastic member is arranged outside the jacking rod and abuts against the sleeve and the rotating shaft to apply an elastic force to the rotating shaft.

[0015] In some embodiments, the sleeve includes a first section and a second section, the outer diameter of the second section is greater than that of the first section, the first sealing ring is arranged outside the second section, and the second section is provided with a first accommodating cavity for accommodating the elastic member on the side facing the rotating shaft;

[0016] The jacking mechanism further includes a second sealing ring, the second sealing ring is arranged in the second section and outside the jacking rod, and the bottom wall of the first accommodating cavity is provided with a second accommodating cavity for mounting the second sealing ring.

[0017] In some embodiments, the jacking mechanism further includes a third sealing ring, the third sealing ring is arranged outside the jacking rod and in the first section and abuts against the inner wall of the first section.

[0018] In some embodiments, the valve body includes a connecting seat and separately arranged first and second valve seats, one end of the first valve seat is used to mount the electromagnetic valve and provide the ball core with rotation, the second valve seat is used to provide the rotating shaft with rotation, the connecting seat abuts against the inner walls of the first and second valve seats and is rotationally arranged with the second section.

[0019] In some embodiments, the second section is provided with an abutting ring at the end facing the first section, and the first sealing ring is clamped between the abutting ring and the connecting seat.

[0020] In some embodiments, the ball core is provided with a plurality of air vents, the diameters of the air vents are different, and the ball core is used to sequentially face the main fire passage under the rotation of the rotating shaft to adjust the air flow of the main fire passage.

[0021] In some embodiments, the ball core is provided with two air vents, which are defined as a first air vent and a second air vent, and the diameter of the first air vent is greater than that of the second air vent.

[0022] When the rotating shaft rotates by a first angle relative to its initial position, the main fire channel connects to the first vent.

[0023] When the rotating shaft rotates by a second angle relative to its initial position, the main fire channel connects to the second vent.

[0024] In some embodiments, the diameter of the pilot flame channel ranges from 2.0 mm to 3.0 mm.

[0025] In another aspect, a gas appliance is provided, comprising the aforementioned on / off ball valve.

[0026] In summary, the ball valve and gas appliance provided by this invention have the following technical advantages:

[0027] Gas flows in through the intake channel, while the pilot flame channel and main flame channel are used for gas outflow. Under the push of the push mechanism, the solenoid valve opens the intake channel, allowing gas to enter the main channel. At this time, the pilot flame channel is in the outflow state, and the main flame channel is in the closed state. Thus, gas can flow out through the pilot flame channel to continuously burn on the stove and provide heat to the thermocouple. This allows the thermocouple to receive a continuous and stable amount of heat, enabling the solenoid valve, which is opened by the push mechanism, to close stably. This ensures that the channel opening remains stably open, guaranteeing a stable gas supply to the subsequent main flame channel, thereby ensuring a stable flame source. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of a ball valve according to an embodiment of the present invention;

[0029] Figure 2 for Figure 1 Another three-dimensional schematic diagram of the ball valve in the diagram;

[0030] Figure 3 for Figure 1 An exploded schematic diagram of the ball valve in the diagram;

[0031] Figure 4 for Figure 1 A schematic diagram of the structure of the ball valve in the diagram;

[0032] Figure 5 for Figure 4 A cross-sectional view along the AA direction;

[0033] Figure 6 for Figure 5 A schematic diagram of the valve body in the diagram;

[0034] Figure 7 for Figure 5 A schematic diagram of the jacking mechanism and connecting seat in the middle;

[0035] Figure 8 is Figure 7 a sectional view of the push mechanism and the adapter seat in

[0036] Figure 9 is Figure 7 a structural view of the valve core in

[0037] FIG. :

[0038] 100-switch ball valve, 10-valve body, 11-air inlet channel, 111-channel opening, 12-perpetual flame channel, 13-main flame channel, 14-main channel, 15-first valve seat, 151-first notch, 16-second valve seat, 161-second notch, 17-adapter seat, 171-first abutting sleeve, 172-second abutting sleeve, 20-solenoid valve, 30-push mechanism, 31-rotating shaft, 311-protrusion, 32-valve core, 321-ball core, 3211-vent, 3211a-first vent, 3211b-second vent, 322-shaft sleeve, 3221-groove, 3222-first section, 3223-second section, 3224-first receiving cavity, 3225-abutting ring, 3226-second receiving cavity, 33-push rod, 331-clasp ring, 34-elastic member, 35-second sealing ring, 36-card, 37-third sealing ring, 40-first sealing ring, 50-micro switch, 60-paddle. DETAILED DESCRIPTION

[0039] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0040] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing the specific embodiments and are not intended to limit the present application.

[0042] The present application will be further described in detail below in combination with the drawings.

[0043] Please refer to Figures 1 to 9The switch ball valve 100 provided by the embodiment of the present application comprises a valve body 10, an electromagnetic valve 20, a pushing mechanism 30 and at least two first sealing rings 40.

[0044] Wherein, referring to Figures 1 to 5 The valve body 10 is provided with an air inlet channel 11, a long-lasting fire channel 12, a main fire channel 13 and a main channel 14. The air inlet channel 11, the long-lasting fire channel 12 and the main fire channel 13 are respectively connected with the main channel 14, and the long-lasting fire channel 12 and the main fire channel 13 are arranged at different sides of the valve body 10. The electromagnetic valve 20 is connected with a thermocouple and arranged at one end of the main channel 14, and is used to open or close a channel opening 111 connected between the air inlet channel 11 and the main channel 14. The pushing mechanism 30 is movably arranged at the other end of the main channel 14, and is used to apply a pushing force to the electromagnetic valve 20 under the action of an external force to open the channel opening 111 or rotate under the action of an external force to adjust the gas outlet amount of the main fire channel 13. The at least two first sealing rings 40 are arranged outside the pushing mechanism 30 and abut against the side wall of the main channel 14. When the pushing mechanism 30 pushes the electromagnetic valve 20 to open the channel opening 111, the long-lasting fire channel 12 is in a gas outlet state, and the main fire channel 13 is in a closed state.

[0045] The switch ball valve 100 is filled with gas through the air inlet channel 11, and the long-lasting fire channel 12 and the main fire channel 13 are respectively used for gas outlet. Under the pushing of the pushing mechanism 30, the electromagnetic valve 20 opens the channel opening 111 of the air inlet channel 11. At this time, gas can enter the main channel 14 through the air inlet channel 11. At this time, the long-lasting fire channel 12 is in a gas outlet state, and the main fire channel 13 is in a closed state. Therefore, gas can flow out through the long-lasting fire channel 12 to sustain combustion on the stove, and provide heat to the thermocouple. Therefore, the thermocouple can continuously and stably obtain heat, so that the electromagnetic valve 20 pushed open by the pushing mechanism 30 can be stably closed to ensure that the channel opening 111 can be in a stable open state, and the stable gas supply state of the main fire channel 13 is ensured, that is, the stable fire source is ensured.

[0046] It should be noted that, since the pushing mechanism 30 needs to rotate relative to the inner wall of the valve body 10, and sealing is required between the two, the first sealing ring 40 needs to be arranged between the pushing mechanism 30 and the valve body 10. Further, by arranging at least two sealing rings, the switch ball valve 100 of the embodiment can be applied to a larger pressure use environment, for example, a pressure condition of 100kpa-200kpa of medium gas pressure, and the risk of gas leakage can be avoided.

[0047] Specifically, two first sealing rings 40 are arranged in the embodiment, so that the frictional resistance of the pushing mechanism 30 relative to the valve body 10 can be ensured to be not too large while ensuring sealing.

[0048] Please refer to Figure 3 , Figure 5 , Figure 7 and Figure 8 In an embodiment of the present application, the pushing mechanism 30 comprises a rotating shaft 31, a valve core 32, a pushing rod 33 and an elastic member 34.

[0049] Specifically, the rotating shaft 31 is arranged to rotate relative to the valve body 10 and extends out of the valve body 10 for receiving driving force from outside, for example, for being installed with a knob and being rotated under the driving of a user's hand; the valve core 32 is arranged in the main passage 14 and comprises a ball core 321 and a shaft sleeve 322 arranged integrally, the ball core 321 is used for adjusting the air flow of the main fire passage 13, and the shaft sleeve 322 is used for cooperating with the pushing rod 33 to drive the ball core 321 to rotate; the pushing rod 33 is arranged through the ball core 321 and the shaft sleeve 322 and is used for cooperating with the rotating shaft 31 to apply a pushing force to the electromagnetic valve 20; the elastic member 34 is arranged in the main passage 14 and is sleeved on the pushing rod 33, and abuts against the shaft sleeve 322 and the rotating shaft 31 respectively to apply an elastic force to the rotating shaft 31. In this way, when the switch ball valve 100 is in use, the rotating shaft 31 is pressed, the rotating shaft 31 applies a pressing force to the pushing rod 33, the pushing rod 33 slides relative to the shaft sleeve 322, the pushing rod 33 pushes open the electromagnetic valve 20, at this time, the passage opening 111 of the air inlet passage 11 is in an open state, and the rotating shaft 31 compresses the elastic member 34. Since the ball core 321 and the shaft sleeve 322 are arranged integrally in this embodiment, when the rotating shaft 31 is driven to rotate, the concentricity of the two is higher, and the precision of the rotation driven by the rotating shaft 31 is higher, that is, the ball core 321 can more accurately adjust the air inlet amount of the main fire passage 13 to accurately adjust the fire size of the gas burner.

[0050] Please refer to Figure 3 and Figure 7 When the rotating shaft 31 is pressed to cooperate with the shaft sleeve 322, the rotating shaft 31 is provided with a protrusion 311, and the shaft sleeve 322 is provided with a groove 3221, when the rotating shaft 31 is pressed by external force, the protrusion 311 is clamped into the groove 3221, and the elastic member 34 is compressed, so that the rotating shaft 31 can drive the shaft sleeve 322 and the ball core 321 to rotate.

[0051] The switch ball valve 100 of the embodiment can be used under the condition of medium gas pressure, for example, can be used under the condition of gas pressure of 100 kpa-200 kpa while maintaining sealing, the shaft sleeve 322 includes a first section 3222 and a second section 3223, the outer diameter of the second section 3223 is greater than that of the first section 3222, the first sealing ring 40 is sleeved on the outside of the second section 3223, and the second section 3223 is provided with a first accommodating cavity 3224 accommodating the elastic member 34 on the side facing the shaft 31; the push mechanism 30 further includes a second sealing ring 35, the second sealing ring 35 is arranged in the second section 3223 and sleeved on the outside of the push rod 33, and the bottom wall of the first accommodating cavity 3224 is provided with a second accommodating cavity 3226 for installing the second sealing ring 35, so that the second sealing ring 35 is further arranged in cooperation with the first sealing ring 40 to further increase the sealing performance of the push rod 33 when moving relative to the shaft sleeve 322, so that the switch ball valve 100 of the embodiment can be adapted to gas with greater pressure.

[0052] Wherein, please refer to Figure 3 and Figure 5 The elastic member 34 needs to be abutted between the shaft 31 and the bottom wall of the first accommodating cavity 3224, and the second sealing ring 35 can be exposed from the bottom wall of the first accommodating cavity 3224, the second sealing ring 35 has a certain flexibility, in order to ensure that the elastic member 34 has elastic effect, the push mechanism 30 further includes a card 36, the card 36 is sleeved on the push rod 33, and one end of the elastic member 34 is abutted.

[0053] In addition, please refer to Figure 3 and Figure 5 On the basis of arranging the second sealing ring 35, the push mechanism 30 of the embodiment further includes a third sealing ring 37, the third sealing ring 37 is arranged in the first section 3222, is sleeved on the outside of the push rod 33, and abuts against the inner wall of the first section 3222, since the push rod 33 also slides relative to the first section 3222, by arranging the third sealing ring 37 in cooperation with the second sealing ring 35, the sealing effect between the push rod 33 and the entire shaft sleeve 322 is ensured; further, the third sealing ring 37 and the second sealing ring 35 together cooperate with the plurality of first sealing rings 40 to increase the sealing performance between the entire push mechanism 30 and the valve body 10, so that the entire switch ball valve 100 can be used for gas with greater pressure.

[0054] Wherein, when the third sealing ring 37 is arranged, in order to ensure the stability of the arrangement position of the third sealing ring 37, two spaced clamping rings 331 are arranged on the ejector rod 33, the third sealing ring 37 is clamped in the gap between the two clamping rings 331, thereby achieving the installation of the third sealing ring 37. In other embodiments, a clamping groove can also be formed on the ejector rod 33, and the third sealing ring 37 can be clamped in the clamping groove, which can also achieve the installation of the third sealing ring 37.

[0055] Please refer to Figure 3 , Figure 5 and Figure 6 , in an embodiment of the present application, in order to facilitate the installation of the push mechanism 30 in the valve body 10, the valve body 10 comprises a connecting seat 17 and a first valve seat 15 and a second valve seat 16 arranged separately, one end of the first valve seat 15 is used for installing the electromagnetic valve 20, and the ball core 321 is arranged to rotate, the second valve seat 16 is used for rotating the shaft 31, the connecting seat 17 abuts the inner wall of the first valve seat 15 and the second valve seat 16 respectively, and is arranged to rotate with the second section 3223, in this way, by arranging the first valve seat 15 and the second valve seat 16 separately in the valve body 10, it is convenient to install the ejector rod 33, the shaft sleeve 322 and the elastic member 34 in the valve body 10, that is, the ejector rod 33, the shaft sleeve 322 and the elastic member 34 can be assembled as a whole, then the whole is inserted from the open end of the first valve seat 15, and then installed with the connecting seat 17 and the second valve seat 16 respectively; by arranging the connecting seat 17, the connection between the first valve seat 15 and the second valve seat 16 can be sealed, and the connecting seat 17 can abut against the first sealing ring 40 to clamp the first sealing ring 40 between the second section 3223 and the connecting seat 17.

[0056] Further, please refer to Figure 7 and Figure 8 , the end of the second section 3223 towards the first section 3222 is provided with an abutting ring 3225, and the first sealing ring 40 is clamped between the abutting ring 3225 and the connecting seat 17, so as to limit the position of the first sealing ring 40, that is, the connecting seat 17 not only realizes the sealing effect of the connection between the first valve seat 15 and the second valve seat 16, but also facilitates the limiting of the installation of the first sealing ring 40, thereby facilitating the assembly of the whole ball valve. In other embodiments, a clamping opening can also be arranged on the outer wall of the second section 3223, and the first sealing ring 40 and the connecting seat 17 can be clamped in the clamping opening, which can also achieve the effect of limiting the installation of the first sealing ring 40.

[0057] In addition, after the first valve seat 15, the second valve seat 16 and the connecting seat 17 are installed, the first valve seat 15 and the second valve seat 16 are also connected by bolts.

[0058] Further, please refer toFigure 6 In order to facilitate the installation of the adapter seat 17, the adapter seat 17 includes a first abutting sleeve 171 and a second abutting sleeve 172 along the axial direction of the rotating shaft 31, the second abutting sleeve 172 is arranged towards the rotating shaft 31, the outer diameter of the second abutting sleeve 172 is larger than that of the first abutting sleeve 171, the outer wall of the first abutting sleeve 171 abuts against the inner wall of the first valve seat 15, the first valve seat 15 and the second valve seat 16 are respectively provided with a first notch 151 and a second notch 161, and the second abutting sleeve 172 is clamped in the first notch 151 and the second notch 161, so that the first section 3222 with a smaller outer diameter can be matched with the inner wall of the first valve seat 15 and can limit the installation of the first sealing ring 40, and by respectively providing the first notch 151 and the second notch 161 on the first valve seat 15 and the second valve seat 16, the installation of the second abutting sleeve 172 can be limited, so that the installation position of the entire adapter seat 17 is limited.

[0059] Please refer to Figure 9 In an embodiment of the present application, when the gas flow of the main fire channel 13 is adjusted, a plurality of air vents 3211 are arranged on the ball core 321, the diameters of the air vents 3211 are different, and the air vents 3211 are arranged to be sequentially directed towards the main fire channel 13 under the rotation of the rotating shaft 31 to adjust the gas flow of the main fire channel 13, so that by arranging air vents with different diameters to be directed towards the main fire channel 13, the regulation of different fire powers of the gas is realized.

[0060] Specifically, the ball core 321 of the present embodiment is provided with two air vents 3211, which are defined as a first air vent 3211a and a second air vent 3211b, the diameter of the first air vent 3211a is larger than that of the second air vent 3211b; when the rotating shaft 31 is rotated by a first angle relative to the initial position, the main fire channel 13 is connected to the first air vent 3211a; when the rotating shaft 31 is rotated by a second angle relative to the initial position, the main fire channel 13 is connected to the second air vent 3211b, that is, when the rotating shaft 31 drives the ball core 321 to rotate by a first angle relative to the initial position, the gas flow of the main fire channel 13 is large at this time, and the gas burns as a large fire, when the rotating shaft 31 drives the ball core 321 to rotate by a second angle relative to the initial position, the gas flow of the main fire channel 13 is small at this time, and the gas burns as a small fire, so that this arrangement is suitable for the use habit of the user, and after the rotating shaft 31 is rotated, a large fire appears first for cooking.

[0061] Specifically, the first angle is set to 90°, and the second angle is set to 150°. In other embodiments, other rotation angles can also be set, for example, the first angle is 60 degrees, the second angle is 120 degrees, etc., which are not limited herein.

[0062] Please refer to Figure 5In one embodiment of the present application, when the top rod 33 opens the electromagnetic valve 20, the passage opening 111 and the eternal flame passage 12 are always in communication, and the caliber of the eternal flame passage 12 ranges from 2.0 mm to 3.0 mm, so that the flow of gas is not too small to cause insufficient gas outflow to provide sufficient heat for the thermocouple, and the risk of excessive gas flow is avoided.

[0063] In the embodiment, the switch ball valve 100 further comprises a micro switch 50, and a push piece 60 is further sleeved on the rotating shaft 31, and when the rotating shaft 31 is pressed, the push piece 60 is driven to move towards the micro switch 50, so as to realize ignition.

[0064] The switch ball valve 100 described above is provided with the second sealing ring 35 in the shaft sleeve 322, and cooperates with the first sealing ring 40 to further increase the sealing property of the top rod 33 when moving relative to the shaft sleeve 322, so as to adapt the switch ball valve 100 of the embodiment to gas with greater pressure; the valve body 10 is provided with the connecting seat 17 and the first valve seat 15 and the second valve seat 16 which are separately arranged, so as to facilitate the installation of the top rod 33, the shaft sleeve 322 and the elastic member 34 in the valve body 10, that is, the top rod 33, the shaft sleeve 322 and the elastic member 34 are assembled as a whole, and then the whole is inserted from the opening end of the first valve seat 15, and then the connecting seat 17 and the second valve seat 16 are installed respectively, and the connecting seat 17 can seal the connecting part between the first valve seat 15 and the second valve seat 16; the connecting seat 17 comprises the first abutting sleeve 171 and the second abutting sleeve 172 along the axial direction of the rotating shaft 31, the first valve seat 15 and the second valve seat 16 are respectively provided with the first notch 151 and the second notch 161, and the second abutting sleeve 172 is clamped in the first notch 151 and the second notch 161, so as to limit the installation of the second abutting sleeve 172 and limit the installation position of the whole connecting seat 17; when the gas flow of the main flame passage 13 is adjusted, the ball core 321 is provided with a plurality of air vents 3211, and the calibers of the air vents 3211 are different, so as to adjust the gas outflow of the main flame passage 13; the caliber of the eternal flame passage 12 ranges from 2.0 mm to 3.0 mm, so that the flow of gas is not too small to cause insufficient gas outflow to provide sufficient heat for the thermocouple, and the risk of excessive gas flow is avoided.

[0065] In another embodiment of the present application, a gas appliance is further provided, which comprises the switch ball valve described above.

[0066] The technical means disclosed in the present application are not limited to the technical means disclosed in the above embodiments, and include technical solutions composed of any combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the scope of protection of the present application.

Claims

1. A switch ball valve (100) characterized by, The valve body (10) is provided with an air inlet channel (11), a pilot flame channel (12), a main flame channel (13) and a main channel (14), the air inlet channel (11), the pilot flame channel (12) and the main flame channel (13) are communicated with the main channel (14) respectively, and the pilot flame channel (12) and the main flame channel (13) are arranged on different sides of the valve body (10); An electromagnetic valve (20) is connected to a thermocouple, and the electromagnetic valve (20) is arranged at one end of the main channel (14) and used for opening or closing a channel opening (111) communicated between the air inlet channel (11) and the main channel (14); A pushing mechanism (30) is movably arranged at the other end of the main channel (14) and used for applying a pushing force to the electromagnetic valve (20) under the action of an external force to open or close the channel opening (111) or rotating under the action of an external force to adjust the air outlet amount of the main flame channel (13); At least two first sealing rings (40) are arranged outside the pushing mechanism (30) and abut against the side wall of the main channel (14); When the pushing mechanism (30) pushes the electromagnetic valve (20) to open the channel opening (111), the pilot flame channel (12) is in an air outlet state, and the main flame channel (13) is in a closed state; The pushing mechanism (30) comprises: A rotating shaft (31) is arranged to rotate relative to the valve body (10) and extends out of the valve body (10); A valve core (32) is arranged in the main channel (14) and comprises a ball core (321) and a shaft sleeve (322) arranged integrally, the ball core (321) is used for adjusting the air flow amount guided to the main flame channel (13), and the shaft sleeve (322) is used for driving the ball core (321) to rotate; A push rod (33) is arranged in the ball core (321) and the shaft sleeve (322) and used for cooperating with the rotating shaft (31) to apply a pushing force to the electromagnetic valve (20); An elastic member (34) is arranged outside the push rod (33) and abuts against the shaft sleeve (322) and the rotating shaft (31) respectively to apply an elastic force to the rotating shaft (31); When the rotating shaft (31) is pressed and matched with the shaft sleeve (322), the rotating shaft (31) is provided with a protrusion (311), the shaft sleeve is provided with a groove (3221), when the rotating shaft (31) is pressed by an external force, the protrusion (311) is clamped into the groove (3221), and the elastic member (34) is compressed.

2. The switch ball valve (100) according to claim 1, characterized in that ​ The shaft sleeve (322) comprises a first section (3222) and a second section (3223), the outer diameter of the second section (3223) is greater than that of the first section (3222), the first sealing ring (40) is sleeved outside the second section (3223), and the second section (3223) is provided with a first accommodating cavity (3224) for accommodating the elastic member (34) on the side facing the rotating shaft (31); The push mechanism (30) further comprises a second sealing ring (35), the second sealing ring (35) is arranged in the second section (3223) and sleeved outside the push rod (33), and a second accommodating cavity (3226) is arranged on the bottom wall of the first accommodating cavity (3224) and used for mounting the second sealing ring (35).

3. The on / off ball valve (100) according to claim 2, characterized in that The push mechanism (30) further comprises a third sealing ring (37), the third sealing ring (37) is sleeved outside the push rod (33) and arranged in the first section (3222) and abuts against the inner wall of the first section (3222).

4. The on / off ball valve (100) according to claim 2, characterized in that The valve body (10) comprises a connecting seat (17) and separately arranged first and second valve seats (15, 16), one end of the first valve seat (15) is used for mounting the electromagnetic valve (20) and rotating the ball core (321), the second valve seat (16) is used for rotating the rotating shaft (31), and the connecting seat (17) abuts against the inner walls of the first and second valve seats (15, 16) and is arranged in rotation with the second section (3223).

5. The switch ball valve (100) according to claim 4, characterized in that The end of the second section (3223) facing the first section (3222) is provided with an abutting ring (3225), and the first sealing ring (40) is clamped between the abutting ring (3225) and the connecting seat (17).

6. The on / off ball valve (100) according to any one of claims 1-3, characterized in that The ball core (321) is provided with a plurality of air vents (3211), the diameters of the air vents (3211) are different, and the ball core (321) is used for sequentially facing the main fire channel (13) under the rotation of the rotating shaft (31) to adjust the air outlet amount of the main fire channel (13).

7. The switch ball valve (100) according to claim 6, characterized in that The ball core (321) is provided with two air vents (3211), and the two air vents (3211) are defined as a first air vent (3211a) and a second air vent (3211b), the diameter of the first air vent (3211a) is greater than that of the second air vent (3211b); When the rotating shaft (31) rotates a first angle relative to the initial position, the main fire channel (13) is communicated with the first air vent (3211a); When the rotating shaft (31) rotates a second angle relative to the initial position, the main fire channel (13) is communicated with the second air vent (3211b).

8. The on / off ball valve (100) according to any one of claims 1-3, characterized in that The diameter of the permanent fire channel (12) ranges from 2.0 mm to 3.0 mm.

9. A gas appliance characterised in that The switch ball valve (100) according to any one of claims 1-8.

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