Damping switches, plug valves and gas appliances

Abstract

The present invention discloses a damping switch, a plug valve and a gas appliance, wherein the plug valve comprises a shell, the shell is provided with a through hole penetrating in the thickness direction thereof, and the shell is also provided with a mounting portion that enables the damping switch to be fixedly mounted as a whole on the outside of the plug valve; a rotating member is accommodated in the shell and can rotate relative to the shell, and an axial hole is provided on the rotating member, the axial hole is correspondingly connected to the through hole, and the axial hole is provided for the valve stem to pass through and install; wherein, one of the rotating member and the shell is provided with a plurality of positioning grooves arranged at intervals in the rotation direction of the valve stem, and the other of the two is provided with an elastic abutment component, and in the process of the valve stem driving the rotating member to rotate, the elastic abutment component is stuck in one of the plurality of positioning grooves. The technical solution of the present invention realizes the convenient adjustment of the gas size of the plug valve.

Description

Technical Field

[0001] The invention relates to the technical field of gas appliances, and in particular to a damping switch, a plug valve using the damping switch, and a gas appliance using the plug valve. Background Art

[0002] In some designs of gas stoves, the plug valve is mostly stepless adjustment. When users use the plug valve to control the fire power, they usually judge the fire power by bending down to observe the size of the flame, which makes the process of adjusting the fire power more troublesome. Summary of the invention

[0003] The main purpose of the present invention is to provide a damping switch, aiming to simplify the process of adjusting the fire power of a plug valve in a gas appliance.

[0004] To achieve the above object, the damping switch proposed in the present invention is applied to a plug valve, wherein the plug valve includes a valve stem, and the damping switch includes:

[0005] A housing, wherein the housing is provided with a through hole penetrating in a thickness direction thereof, and the housing is also provided with a mounting portion capable of fixing the damping switch as a whole on the outside of the plug valve;

[0006] A rotating member is accommodated in the housing and can rotate relative to the housing. The rotating member is provided with an axial hole, the axial hole is correspondingly connected to the through hole, and the valve stem is installed through the axial hole;

[0007] Among them, one of the rotating part and the outer shell is provided with a plurality of positioning grooves arranged at intervals in the rotation direction of the valve stem, and the other of the two is provided with an elastic abutment component. When the valve stem drives the rotating part to rotate, the elastic abutment component is inserted into one of the plurality of positioning grooves.

[0008] The technical solution of the present invention is to provide a mounting portion in the damping switch so as to fix it to the outside of the plug valve, and the damping switch has multiple positioning grooves and an elastic abutting component that can be pressed against and inserted into one of the multiple positioning grooves. During the process of rotating the valve stem to adjust the firepower, the plug valve can achieve precise control and adjustment of the firepower in multiple gears through the snap-fit ​​cooperation between the elastic abutting component and the positioning groove, thereby realizing a simple process of adjusting the firepower of the gas appliance.

[0009] Optionally, the outer shell is installed with the elastic abutment assembly, and a plurality of positioning grooves are arranged at intervals on the outer periphery of the rotating member. The elastic abutment assembly includes an elastic member and a abutment member, one end of the elastic member abuts the outer shell, and the other end abuts the abutment member, and the elastic member provides elastic force to drive the abutment member to abut against the groove wall of the positioning groove and generate a prompt sound.

[0010] Optionally, the housing is provided with an extension portion extending outward, a mounting groove is formed in the extension portion, one end of the elastic member extends into the mounting groove, and the other end extends out of the mounting groove and presses against the top member.

[0011] Optionally, the abutting member has an arc-shaped contact surface on a side facing the rotating member, and the opening shape of the positioning groove is matched with the outer contour shape of the abutting member.

[0012] Optionally, the mounting portion is a connecting bracket extending from the housing to one side thereof, and the connecting bracket is used to be fixedly connected to the stopcock.

[0013] Optionally, the rotating part includes a base portion having a plurality of positioning grooves spaced apart on the outer circumference and a positioning column connected to the base portion and extending toward one side of the base portion, the axial hole passes through the positioning column and the base portion, and the outer shell is also provided with a positioning cylinder, which extends outward from the periphery of the through hole, and the positioning column and the axial hole of the positioning cylinder cooperate.

[0014] Optionally, the shell includes a base and a cover body detachably connected to the base, the through hole passes through the base and the cover body, the cover body includes a cover body with the through hole and the positioning cylinder connected to the cover body, and the positioning cylinder extends from the periphery of the through hole to the outside of the cover body.

[0015] The present invention also provides a plug valve, which is applied to a gas stove. The plug valve comprises:

[0016] Valve body;

[0017] a valve stem, the valve stem partially extending into the valve body and being rotatable relative to the valve body; and

[0018] And the damping switch as described in any of the above embodiments, the damping switch is installed outside the valve body, and the valve stem passes through the axial hole in the damping switch.

[0019] Optionally, the stopcock valve further comprises a micro switch, and the micro switch is detachably connected to the valve body.

[0020] Optionally, the micro switch is fixed together with the damping switch and the valve body through a connecting piece.

[0021] Optionally, a locking hole is provided on the valve body, a connecting hole is provided on the mounting portion, and a mounting hole is provided on the micro switch for aligning the connecting hole and the locking hole. The damping switch, the micro switch and the valve body are fixed together by a connecting member passing through the connecting hole and the mounting hole and being locked in the locking hole.

[0022] Optionally, a limit groove is further provided on the outside of the valve body, and the micro switch is embedded in the limit groove.

[0023] Optionally, the upper portion of the valve body is further provided with a connecting cylinder extending upward, the valve stem passes through the connecting cylinder and extends into the valve body, the connecting cylinder is provided with a notch extending through it in a radial direction, and the micro switch passes through the notch to contact the valve stem.

[0024] Optionally, an annular groove surrounding the through hole is provided at the bottom of the shell, a positioning protrusion is radially protruded on the inner wall of the annular groove, the end of the connecting tube is embedded in the annular groove, and the positioning protrusion is stuck in the notch.

[0025] The present invention further provides a gas appliance, comprising a burner and a plug valve connected to the burner, wherein the plug valve is the plug valve of any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of a plug valve of the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle plug valve;

[0029] Figure 3 for Figure 1 Schematic diagram of the structure of the valve seat of the middle plug valve;

[0030] Figure 4 for Figure 1 Schematic diagram of the valve stem structure of the middle plug valve

[0031] Figure 5 for Figure 1 Schematic diagram of the exploded structure of the valve stem and valve core of the medium plug valve;

[0032] Figure 6 for Figure 1 Schematic diagram of the internal structure of the valve cover of the middle plug valve;

[0033] Figure 7 It is a front view of an embodiment of a valve core of the present invention;

[0034] Figure 8 for Figure 7 A three-dimensional diagram of the valve core in FIG.

[0035] Fig. 9 for Figure 8 A cross-sectional view of the valve core in FIG.

[0036] Fig.10 for Figure 7 A three-dimensional image of the valve core from another perspective;

[0037] Fig.11 for Fig.12 Schematic diagram of the exploded structure of the damping switch in the middle plug valve;

[0038] Fig.12 for Fig.11 Schematic diagram of the internal structure of the medium damping switch;

[0039] Fig.13 for Figure 1 Assembly drawing of the base body in the damping switch in the medium plug valve and the valve cover in the valve body;

[0040] Fig.14 for Figure 1 A schematic diagram of the three-dimensional structure of the valve cover of the middle plug valve;

[0041] Fig.15 for Figure 1 A three-dimensional view of a base body in a damping switch in a medium plug valve from a top view;

[0042] Fig.16 for Figure 1 Exploded view of the base body in the damping switch in the medium plug valve, the valve cover in the valve body and the micro switch;

[0043] Fig.17 for Figure 1 Assembly drawing of the valve cover and micro switch in the valve body of the medium plug valve;

[0044] Figures 18a to 18j It is a schematic diagram of the process of the valve core in the plug valve of the present invention rotating from 0 degrees to 270 degrees, and the figure is a cross-section view from the second air outlet channel;

[0045] Figures 19a to 19j The figure is a schematic diagram of the process of the valve core in the plug valve of the present invention rotating from 0 degrees to 270 degrees, and the figure is a cross-section view from the first air outlet channel.

[0046] Description of Figure Numbers:

[0047]

[0048]

[0049] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0053] See also Figure 1 and Figure 2 , the embodiment of the present application provides a plug valve 100, which can be used for a gas appliance, or in other words, the gas appliance includes a plug valve 100. The gas appliance referred to in the present application includes but is not limited to gas stoves, gas water heaters and other appliances that require gas. The gas appliance also includes a burner, and the burner is connected to the plug valve 100. The gas appliance can control the firepower of the burner according to the plug valve 100 to meet different combustion requirements. For example, when the gas appliance is a gas stove, the firepower of the burner can be controlled by the plug valve 100 to meet the cooking requirements of different ingredients. For another example, when the gas appliance is a gas water heater, the firepower of the burner can be controlled by the plug valve 100 to adjust the water outlet temperature of the gas water heater.

[0054] For ease of description, the up and down directions referred to in the following content are referenced to the up and down directions of the valve core 130 in the figure.

[0055] See also Figures 1 to 3 The plug valve 100 of the embodiment of the present application includes a valve body 110, a valve stem 120, a valve core 130, a damping switch 140 and a micro switch 150. The valve core 130 is arranged in the valve body 110 and can rotate in the valve body 110, the valve stem 120 extends into the valve body 110 and is connected to the upper part of the valve core 130, and the damping switch 140 is fixed to the outside of the valve body 110 and sleeved on the outside of the valve stem 120. It can be understood that in actual products, a knob can also be installed on the upper end of the valve stem 120. When in use, the user manually operates the knob to drive the valve stem 120 and the valve core 130 to rotate to control the gas flow out of the plug valve 100 and thus achieve firepower adjustment.

[0056] For details, please refer to Figures 4 to 6 The valve body 110 is the main structural part of the plug valve 100. Other parts of the plug valve 100 can be installed on the valve body 110 so that the plug valve 100 can meet different functions. The valve body 110 can be formed by copper material or other materials through casting and other processes. In order to meet the installation requirements of different parts, the valve body 110 is generally an irregular part. The valve body 110 mainly includes two parts: a valve seat 111 and a valve cover 112. The valve cover 112 and the valve seat 111 are connected and cooperated to form an accommodating chamber 113. The valve seat 111 is also formed with an inner ring air supply hole 115 and an outer ring air supply hole 114 on the side wall of the accommodating chamber 113 (see Figure 3 ), wherein the inner ring air supply hole 115 is connected to the inner ring nozzle in the burner through a pipeline, and the outer ring air supply hole 114 is connected to the outer ring nozzle in the burner through a pipeline. The upper part of the valve cover 112 is provided with an insertion hole for installing the valve stem 120, and the insertion hole is connected to the accommodating chamber 113. The lower end of the valve stem 120 can be inserted into the accommodating chamber 113 through the insertion hole and connected to the valve core 130.

[0057] Please refer to Figures 7 to 10The valve core 130 is an irregular cone, and the valve core 130 includes two sections, specifically a connecting section 131 located at the upper part and an air supply section 132 located at the lower part, wherein an installation cavity 133 opening upward is formed in the connecting section 131, and an air inlet channel 134 opening downward is formed in the air supply section 132. The side wall of the connecting section 131 is also provided with a card slot 135 penetrating the side wall thereof, and a card pin 121 is connected to the lower side wall of the valve stem 120, and a guide is also connected to the lower end of the valve stem 120. The guide rod 122 is inserted downwardly from the installation cavity 133 into the air inlet passage 134. A spring 123 is also sleeved on the outside of the guide rod 122. The spring 123 is located in the installation cavity 133. The spring 123 always provides an upward elastic force. Further, the inner wall of the valve cover 112 is provided with a child lock groove 116 opening downward, and an annular slide 117 extending from both sides of the child lock groove 116. The opening of the child lock groove 116 is aligned with the valve in the upper and lower directions when the plug valve 100 is in the closed state. The spring 123 always provides an upward elastic force to the slot 135 of the core 130. When the plug valve 100 is in the closed position, the valve stem 120 is pushed upward by the spring 123 and the bayonet 121 is embedded in the child lock slot 116. When it is to be opened, the user presses the valve stem 120 through the knob, so that the bayonet 121 slides down and is locked in the slot 135 in the valve core 130. The user then applies a horizontal force to make the valve stem 120 slide along the annular slide 117 through the bayonet 121 and then drive the valve core 130 to rotate. That is, the plug valve 100 of the present application is constructed as above. During the opening process, the user needs to apply two actions, namely, pressing downward and rotating horizontally, to avoid the situation where the user accidentally touches the knob and causes gas leakage. Furthermore, in some embodiments, the width of the slot 135 is 2.2 mm and the diameter of the bayonet 121 is 2.0 mm, so they cooperate with each other closely, with almost no empty space, which drives the valve core 130 to be more sensitive when rotating forward and reversely.

[0058] The air supply section 132 includes a bottom surface 136 and a side surface 137, and the side surface 137 is a conical surface with a larger upper radius. The air supply section 132 of the accommodating chamber 113 in the valve body 110 is also formed with a first air outlet channel 138 communicating with the air inlet channel 134 and a second air outlet channel 139 communicating with the air inlet channel 134. The air inlet channel 134 extends from the bottom surface 136 into the valve core 130, and the first air outlet channel 138 is formed by being recessed into the valve core 130 from the side surface 137. The first air outlet channel 138 extends in a circumferential spiral direction of the valve core 130, and the second air outlet channel 139 is recessed into the valve core 130 from the side surface 137 and is spaced apart from the first air outlet channel 138 along the axial direction of the valve core 130. 139 includes a plurality of air outlet holes with different apertures arranged at intervals in the circumferential direction of the valve core 130, that is, during use, the user rotates the valve core 130 by rotating the knob. Since the first air outlet channel 138 extends spirally, the linear change of the connecting area between the first air outlet channel 138 and the outer ring air supply hole 114 is more obvious, thereby making the effect of the plug valve 100 in controlling the size of the outer ring flame of the burner more obvious, and the user can clearly see the flame changes of the burner. Because the second air outlet channel 139 includes a plurality of air outlet holes with different apertures arranged at intervals in the circumferential direction of the valve core 130, the inner ring flame of the burner can also be adjusted in flame size, thereby meeting the user's various cooking needs.

[0059] Specifically, the central axis of the air inlet channel 134 of the present application may be in a straight line or in a curved line. In the present embodiment, the central axis of the air inlet channel 134 is in a straight line, and the air inlet channel 134 is in a shape of a constant cross-sectional area. The depth direction of the air inlet channel 134 extends along the axial direction of the valve core 130. Of course, in other embodiments, the air inlet channel 134 may be in a shape of a variable cross-sectional area.

[0060] The first air outlet channel 138 is recessed from the side surface 137 into the valve core 130. Therefore, it can be understood that the depth direction of the first air outlet channel 138 is the radial direction of the valve core 130. The first air outlet channel 138 can be formed by a machining process.

[0061] It should be noted that the first air outlet channel 138 extends spirally along the circumference of the valve core 130, which means that the contour of the first air outlet channel 138 on the side 137 extends spirally along the circumference of the valve core 130. At this time, the projection of the first air outlet channel 138 on the assumed plane passing through the central axis of the valve core 130 is inclined.

[0062] Regarding the first air outlet channel 138, please refer to Figure 7In some embodiments, the first outlet channel 138 includes a first groove 1382 and a first through hole 1381, and the first groove 1382 is formed on the side surface 137. The first through hole 1381 communicates with the inlet channel 134 and the first groove 1382. The first groove 1382 extends along the circumferential spiral of the valve core 130.

[0063] In this way, when the first groove 1382 is connected to the outer ring gas supply hole 114, the gas in the intake channel 134 can flow into the outer ring gas supply hole 114 through the first through hole 1381 and the first groove 1382, thereby achieving the purpose of gas control. In addition, the first groove 1382 is separated from the intake channel 134 along the radial direction of the valve core 130, so that the gas can only flow into the first groove 1382 through the first through hole 1381. Since the first groove 1382 is arranged in a spiral shape on the side 132 of the valve core 130, the overlapping area of ​​different parts of the first groove 1382 and the outer ring gas supply hole 114 changes, thereby achieving the regulation of the gas flow rate, and achieving the effect of linear gas regulation.

[0064] In the embodiment of the present application, when the first through hole 1381 is aligned with the outer ring gas supply hole 114, the communication area between the first gas outlet channel 138 and the outer ring gas supply hole 114 is the largest, and the gas directly enters the outer ring gas supply hole 114 after passing through the first through hole 1381. During the rotation of the valve core 130, the first groove 1382 gradually communicates with the outer ring gas supply hole 114. At this time, since the first groove 1382 is spiral, the communication area between the first gas outlet channel 138 and the outer ring gas supply hole 114 becomes smaller, and the path of the gas from the gas inlet channel 134 to the outer ring gas supply hole 114 is lengthened, and the resistance becomes larger, so that the magnitude of the reduction in the flow rate of the gas is more obvious, further improving the effect of the linear adjustment of the flame corresponding to the burner and the first gas outlet channel 138. It can be understood that the first through hole 1381 is connected in the radial direction of the valve core 130.

[0065] In some embodiments, along the length direction of the first groove 1382 , the first groove 1382 includes a first end 1383 and a second end 1384 opposite to the first end 1383 , and the first through hole 1381 is located between the first end 1383 and the second end 1384 .

[0066] As discussed above, when the first through hole 1381 is aligned with the outer ring gas supply hole 114, the communication area between the first gas outlet channel 138 and the outer ring gas supply hole 114 is the largest, and the gas flow rate through the first gas outlet channel 138 is also the largest. The farther the first groove 1382 is from the first through hole 1381, the smaller the gas flow rate.

[0067] In the present embodiment, the first through hole 1381 is located between the first end 1383 and the second end 1384, so that during the ignition process of the burner, the connecting area between the first gas outlet channel 138 and the outer ring gas supply hole 114 gradually increases with the rotation of the valve core 130, and the gas flow rate of the ball valve 100 can change linearly from the state of just opening the valve to the state of maximum gas flow rate, thereby preventing the burner from exploding and causing danger.

[0068] Furthermore, the spiral length along the side 137 of the valve core 130 is greater than the spiral length between the second end 1384 and the first through hole 1381 along the side 137 of the valve core 130. In the embodiment of the present application, during the ignition of the burner, the valve core 130 rotates counterclockwise, and the second end 1384 is first connected to the outer ring gas supply hole 114. As the valve core 130 rotates, the first through hole 1381 and the second end 1384 are sequentially connected to the outer ring gas supply hole 114. The spiral length between the first end 1383 and the first through hole 1381 is longer, so that after the burner is ignited, as the valve core 130 rotates, the gas flow rate flowing out of the outer ring gas supply hole 114 has a larger adjustment range, which is conducive to the linear adjustment of the burner flame.

[0069] Furthermore, along the direction from the first end 1383 to the second end 1384, the first groove 1382 spirally extends toward the bottom surface 136. Conversely, along the direction from the second end 1384 to the first end 1383, the first groove 1382 spirally extends upward. In this way, the first groove 1382 can fully utilize the upper position of the air supply section 132 of the valve core 130, which is conducive to the formation of the first groove 1382.

[0070] As for the second air outlet channel 139, it can be known from the above content that the second air outlet channel 139 of the present application is formed by being recessed from the side surface 137 into the valve core 130 and is arranged with the first air outlet channel 138 along the axial direction of the valve core 130, and the second air outlet channel 139 includes a plurality of air outlet holes with different apertures arranged at intervals in the circumferential direction of the valve core 130. During the rotation of the valve core 130, the air outlet holes with different apertures in the second air outlet channel 139 are also connected through the inner ring air supply hole 115 to achieve the adjustment of the size of the inner ring flame. It can be understood that the inner ring flame generally corresponds to the middle part of the pot, and the inner ring flame is adjusted to meet different cooking needs.

[0071] In the implementation mode of this application, please refer to Figures 7 to 10, along the axial direction of the valve core 130, the first air outlet channel 138 and the second air outlet channel 139 are arranged up and down respectively, or in other words, the first air outlet channel 138 is located above the second air outlet channel 139. Further, in the rotation direction of the plug valve 100 from the closed state to the open state, the shortest distance between the inner ring air supply hole 115 and the second air outlet channel 139 along the side surface 137 of the valve core 130 is smaller than the shortest distance between the outer ring air supply hole 114 and the first air outlet channel 138 along the side surface 137 of the valve core 130. The shortest distance between the inner ring air supply hole 115 and the second air outlet channel 139 is the spiral length between the first air supply hole in the second air outlet channel 139 and the inner ring air supply hole 115 in the circumferential direction of the valve core 130 in the opening rotation direction. In this way, in the process of rotating the valve core 130 by the knob and the valve stem 120 to adjust the firepower, since the spiral length between the second air outlet channel 139 and the inner ring air supply hole 115 in the circumferential direction of the valve core 115 is small, the inner ring air supply hole 115 First, it is connected with the second gas outlet channel 139 to realize gas supply. During the ignition process, the inner ring nozzle in the burner first sprays out gas to burn and form an inner ring flame. When the valve core 130 is further rotated, the outer ring gas supply hole 114 is also connected with the first gas outlet channel 138, the outer ring nozzle also sprays out gas and is ignited by the inner ring flame. When the burner is ignited, it is a process from the inner ring flame to the outer ring flame from the inside to the outside, and from a small flame to a large flame. This can avoid deflagration during the ignition process of the burner. Specifically, in the structure of the second air outlet channel 139 of the present application, the air outlet holes include an ignition hole 1397 arranged first in the rotation direction, that is, the shortest distance between the second air outlet channel 139 and the inner ring air supply hole 115 is the spiral length of the ignition hole 1397 and the inner ring air supply hole 115 in the circumferential direction of the valve core 115. During the ignition process of the plug valve 100 of the present application, the inner ring air supply hole 115 is first docked with the ignition hole 1397 to realize the inner ring nozzle jet ignition of the burner. When the valve core 130 rotates further, the outer ring air supply hole 114 is simultaneously docked and connected to the second end of the first air outlet channel 138. Since the aperture of the ignition hole 1397 can be designed to be relatively small, the structure of the present application ensures that no deflagration will occur during the ignition process, and the ignition process is smooth and safe.

[0072] In some embodiments, along the axial direction of the valve core 130 , the projections of the first air outlet channel 138 and the second air outlet channel 139 partially overlap, and the central angle of the projection of the first air outlet channel 138 on the bottom surface 136 is smaller than the central angle of the projection of the second air outlet channel 139 on the bottom surface 136 . In this way, the projections of the first air outlet channel 138 and the second air outlet channel 139 overlap, so that the first air outlet channel 138 and the second air outlet channel 139 are arranged compactly on the valve core 130, and the central angle of the projection of the first air outlet channel 138 on the bottom surface 136 is smaller than the central angle of the projection of the second air outlet channel 139 on the bottom surface 136. Then, during the rotation of the valve core 130, after the first air outlet channel 138 and the outer ring air supply hole 114 are staggered, the outer ring air supply is closed, and the outer ring flame is closed, while the second air outlet channel 139 still has a certain adjustment space. In this way, the size of the inner ring flame can be adjusted when the outer ring flame is closed, thereby meeting the different cooking firepower requirements of users.

[0073] For details, please continue to see Figures 7 to 10 In the rotation stroke from the first through hole 1381 to the first end 1383, the air outlet holes at least include a first air outlet hole 1391, a second air outlet hole 1392 and a third air outlet hole 1393 which are arranged in sequence, wherein the apertures of the first air outlet hole 1391, the second air outlet hole 1392 and the third air outlet hole 1393 decrease in sequence. In combination with the above content, when the plug valve 100 of the present application is opened, the valve core 130 rotates counterclockwise, and the outer ring air supply hole 114 is relatively close to the first air outlet hole 1381. The channel 138 slides in the direction of the second end 1384, the first through hole 1381, and the first end 1383. When the valve core 130 rotates counterclockwise, when the outer ring gas supply hole 114 is docked with the first through hole 1381, the outer ring flame is the largest. When the outer ring gas supply hole 114 moves from the first through hole 1381 to the first end, the connecting area (shaded part) between the outer ring gas supply hole 114 and the first gas outlet channel 138 gradually decreases, so that the outflow of gas can be controlled to gradually decrease. At this time, the outer ring flame of the burner gradually becomes smaller. The present application sets the aperture of the first gas outlet hole 1391, the second gas outlet hole 1392 and the third gas outlet hole 1393 in the second gas outlet channel 139 to decrease in size, so that the inner ring flame and the outer ring flame have the same decreasing trend, so that the flame size adjustment on the entire burner can be realized to meet the cooking needs of users.

[0074] Furthermore, the air outlet also includes a fourth air outlet 1394, a fifth air outlet 1395 and a sixth air outlet 1396 which are arranged in sequence. The fourth air outlet 1394, the fifth air outlet 1395 and the sixth air outlet 1396 are located behind the third air outlet 1393 in the rotation direction, and the apertures of the fourth air outlet 1394, the fifth air outlet 1395 and the sixth air outlet 1396 show an increasing or decreasing trend. The present application preferably has the fourth air outlet 1394, the fifth air outlet 1395 and the sixth air outlet 1396 with decreasing apertures, wherein the aperture of the fourth air outlet 1394 is equivalent to the aperture of the first air outlet 1391, and when the inner ring air supply hole 115 is connected to the fourth air outlet 1394, the inner ring flame on the burner is the largest. In combination with the above content, the present application adopts such a design that when people only need the inner ring flame for heating during some cooking operations such as frying eggs and pancakes, the structure of the present application allows the user to close the outer ring flame and adjust the size of the inner ring flame as multiple different gears through the fourth air outlet 1394, the fifth air outlet 1395 and the sixth air outlet 1396, thereby satisfying people's demand for fine control of the flame during the cooking process.

[0075] It can be understood that although the above content lists a solution in which three air outlet holes are provided in the rotation stroke from the first through hole 1381 to the first end, and three more are provided behind the second air outlet hole 1392, in actual application, the number of air outlet holes can be other numbers, for example, more densely arranged air outlet holes can be provided to achieve more detailed inner ring flame size adjustment.

[0076] In order to facilitate the user to adjust the inner ring flame and the outer ring flame during use, please refer to Figure 1 and Figure 2 as well as Fig.11 and Fig.12The present application improves the structure of the damping switch 140 in the plug valve 100 and proposes a damping switch 140 with an innovative design. In some embodiments, the damping switch 140 includes a housing 141 and a rotating member 144. The housing 141 is provided with a through hole 1423 penetrating in the thickness direction thereof. The housing 141 is also provided with a mounting portion that enables the damping switch 140 to be fixedly mounted on the outside of the plug valve 100 as a whole. The damping switch 140 is detachably connected to the valve cover 112 of the valve body 110 through the mounting portion. Then, the rotating member 144 is accommodated in the housing 141 and can rotate relative to the housing 141. The rotating member 144 is provided with an axial hole 1444, which corresponds to the through hole 1423. The axial hole 1444 is for the valve stem 120 to pass through and install, and the rotating member 144 is linked with the valve stem 120; wherein, one of the rotating member 144 and the housing 141 is provided with a plurality of positioning grooves 1443 arranged at intervals in the rotation direction of the valve stem 120, and the other of the two is provided with an elastic abutment component 145, During the rotation of the rotating member 144 driven by the valve stem 120, the elastic abutting component 145 is inserted into one of the plurality of positioning grooves 1443. Furthermore, during the rotation of the valve core 130, the elastic abutting component 145 in the present application is inserted into a positioning groove 1443 when the inner ring air supply hole 115 is connected to an air outlet hole in the second air outlet channel 139, so as to maintain the docking state of the inner ring air supply hole 115 and the air outlet hole, that is, at least the positioning groove 1443 is arranged to be connected to the second air outlet channel 139. 39 are in a corresponding relationship. Of course, the number of positioning grooves 1443 can also be more than the number of air outlets, that is, the damping switch 140 cooperates with the above-mentioned valve core 130 design to achieve precise gear adjustment of the inner ring flame and the outer ring flame, and the firepower adjustment process is convenient. Of course, when the second air outlet channel 139 is a linear adjustment design similar to the first air outlet channel 138, the damping switch 140 of the present application also uses a gear adjustment method to achieve the convenience of adjusting the inner ring flame and the outer ring flame at the same time.

[0077] The technical solution of the present invention is to set a damping switch 140 in the stopcock 100, wherein the damping switch 140 has a plurality of positioning grooves 1443 and an elastic abutting component 145 that can be pressed against one of the plurality of positioning grooves 1443. In the process of rotating the valve stem 120 to adjust the firepower, the elastic abutting component 145 and the positioning groove 1443 are engaged with each other, so that the stopcock 100 can achieve precise control and adjustment of the firepower of multiple gears, thereby simplifying the process of adjusting the firepower of the gas appliance. In addition, the present invention also allows the damping switch 140 to be set outside the valve body 110. When the stopcock 100 is used for a long time, the debris generated by the damping switch 140 will not fall into the valve body 110, thereby avoiding the adverse effect of the damping switch 140 on the airtightness of the valve body 110. In addition, the damping switch 140 is set outside the valve body 110, which also improves the convenience of disassembly and assembly of the damping switch 140.

[0078] The damping switch 140 of the present application is installed on the outside of the valve body 110. In order to facilitate the installation and fixation of the damping switch 140, please refer to 13 to Fig.15 , Fig.13 It is an assembly diagram of the base body 1431 and the valve cover 112 in the damping switch 140 . The above-mentioned mounting portion is a connecting bracket 1434 extending to one side from the base body 1431 in the housing 141 . The connecting bracket 1434 is used to be fixedly connected to the valve body 110 of the plug valve 100 .

[0079] The present application preferably forms a plurality of positioning grooves 1443 on the rotating member 144, and installs the elastic abutting assembly 145 on the housing 141. Specifically, the elastic abutting assembly 145 includes an elastic member 146 and an abutting member 147. One end of the elastic member 146 abuts against the housing 141, and the other end abuts against the abutting member 147. A plurality of positioning grooves 1443 are arranged at intervals on the periphery of the rotating member 144. The elastic member 146 provides elastic force to drive the abutting member 147 to abut against the groove wall of the positioning groove 1443 and generate a prompt sound. The rotating member 144 can be made of metal, and the abutting member 147 can also be made of metal. Driven by the elastic member 146, the abutting member 147 hits the groove wall of the positioning groove 1443 to generate a prompt sound. In the process of adjusting the firepower, the user can understand whether the firepower is effectively adjusted by combining the prompt sound.

[0080] In some embodiments, the housing 141 includes a base 143 and a cover 142 adapted to cover the base 143. The cover 142 and the base 143 can be detachably connected by snapping. The base 143 includes a base body 1431 and an extension 1432. The extension 1432 extends outward from the edge of the base body 1431. The rotating member 144 is accommodated in the base body 1431. A mounting groove 1433 is formed in the extension 1432. The elastic member 146 extends into the mounting groove 1433. One end of the elastic member 146 extends into the mounting groove 1433, and the other end extends from the mounting groove 1433 and presses against the top member 147. In this embodiment, the elastic member 146 is a spring. The spring is limited by the mounting groove 1433 to ensure the stability of the structure. Of course, in other embodiments, the elastic member 146 can also be a spring structure.

[0081] Furthermore, in order to ensure smooth movement during the rotation adjustment process, the top abutment 147 of the present application has an arc-shaped contact surface on the side facing the rotating member 144, and the opening shape of the positioning groove 1443 is adapted to the outer contour shape of the top abutment 147. The top abutment 147 shown in the figure of the present application is spherical, such as a steel ball, and the positioning groove 1443 is an open groove with a spherical surface. When the top abutment 147 is inserted into the positioning groove 1443. The positioning groove 1443 can only accommodate a small part of the top abutment 147, so that during the rotation process, the top abutment 147 is relatively smooth and smooth in the process of leaving one positioning groove 1443 and entering another adjacent positioning groove 1443. It can be connected. In other embodiments, the top abutment 147 can also be a positioning pin structure with a spherical surface on the head.

[0082] Furthermore, in order to ensure that the rotating member 144 rotates more smoothly, the present application has also made the following improvements: the rotating member 144 includes a base portion 1441 with a plurality of positioning grooves 1443 arranged at intervals on the outer periphery, and a positioning column 1442 connected to the base portion 1441 and extending to one side of the base portion 1441, the axial hole 1444 passes through the positioning column 1442 and the base portion 1441, and the outer shell 141 is also provided with a positioning cylinder 1422, specifically, the through hole 1423 passes through the base 143 and the cover body 142, the cover body 142 includes a cover body 1421 with a through hole 1423 and the positioning cylinder 1422 connected to the cover body 1421, the positioning cylinder 1422 extends from the periphery of the through hole 1423 to the outside of the cover body 1421, and the positioning column 1442 and the positioning cylinder 1422 axial hole cooperate. The positioning column 1442 and the positioning cylinder 1422 of the present application are coaxially arranged. Since the cover body 142 and the base 143 are relatively fixed, and the valve stem 120 in the stopcock 100 passes through the axial hole 1444 to drive the rotating member 144 to rotate, the positioning column 1442 and the axial hole of the positioning cylinder 1422 can cooperate with each other to ensure that the distance between the outer periphery of the rotating member 144 and the inner wall of the base 143 remains relatively constant. Such an arrangement can ensure that when the push member 147 rotates relative to the rotating member 144, it will not be stuck or the positioning will not be firm due to the sudden decrease in the distance between the outer periphery of the rotating member 144 and the inner wall of the base 143, and it also brings advantages in the manufacturing process. Specifically, the matching accuracy of the valve stem 120 and the axial hole 1444 is not so high, so the cost can also be reduced.

[0083] Please refer to Figure 1 , Figure 2 , Fig.15 as well as Fig.16In some embodiments, the stopcock 100 further includes a micro switch 150, which is detachably connected to the outside of the valve body 110, wherein the detachable connection may be a snap-on connection, a pin-on connection, or a screw connection. In order to achieve the simplicity of the overall structure and convenient assembly, the present application fixes the micro switch 150 with the damping switch 140 and the valve body 110 through a connector. A connecting hole 1435 is provided on the connecting bracket 1434, a locking hole 1126 is provided on the valve cover 112 of the valve body 110, and a mounting hole 151 is provided on the micro switch 150 for aligning the connecting hole 1435 and the locking hole 1126. The damping switch 140, the micro switch 150, and the valve body 110 are fixed together by the connector passing through the connecting hole 1435 and the mounting hole 151 and being locked in the locking hole 1126. Among them, the microswitch 150 is located between the damping switch 140 and the valve body 110. From the above content, it can be seen that the plug valve 100 of the present application has a safe start-up mechanism. During the opening process, it is necessary to first press the valve stem 120 through the knob, and the microswitch 150 is used to detect contact with the valve stem 120 during the downward pressure of the valve stem 120. When the microswitch 150 is triggered during the downward pressure of the valve stem 120, the microswitch 150 changes from a normally open state to an on state, and the signal is given to the pulse control discharge, and the ignition switch ignites. Specifically, the valve cover 112 includes a valve cover body 1121, a connecting tube 1122 connected to the valve cover body 1121 and extending upward, and the valve stem 110 extends into the valve body 110 through the connecting tube 1122, wherein the connecting tube 1122 is provided with a radially through-going notch 1123, and the probe of the micro switch 150 extends through the notch 1123 to contact the valve stem 120 for detection, and controls the opening of the plug valve 100 in a manner triggered by the valve stem 120, thereby realizing the safe start-up of the plug valve 100. At the same time, that is, through the above-mentioned connection structure setting, the plug valve 100 of the present application fixes the three together through a simple structure, so that the overall structure is simplified. Further, in order to improve the stability of the connection structure, please refer to Fig.14 and Fig.16 The valve cover 112 of the present application further includes a lap joint 1124 connected to the valve cover body 1121, wherein the locking hole 1126 is provided on the lap joint 1124, and a plurality of retaining walls are convexly provided on the lap joint 1124, and the plurality of retaining walls are enclosed to form a limiting groove 1125, and the micro switch 150 is embedded in the limiting groove 1125. Through the design of the limiting groove 1125, after the damping switch 140 and the micro switch 150 are locked to the valve cover 112 together through the connecting piece, the three will not rotate relative to each other, and the overall structure is more solid. It can be understood that in the fixing method of the damping switch 140 and the micro switch 150, the connecting piece can also be set as a buckle structure, that is, the damping switch 140 and the micro switch 150 are fixed to the valve body 110 as a whole by snap connection.

[0084] Furthermore, in some embodiments, an annular groove 1436 is provided at the end of the base body 1431, and a positioning protrusion 1436 is radially protruded from the annular groove 1436. During the assembly of the damping switch 140, the end of the connecting tube 1122 can be embedded in the annular groove 1436, and the positioning protrusion 1436 is inserted into the notch 1123. In this way, through the cooperation of the positioning protrusion 1437 and the notch 1123, the circumferential movement of the damping switch 140 during the firepower adjustment process can be avoided, and the assembly alignment process is simpler.

[0085] The damping switch 140 of the present application is provided to achieve more precise control during the firepower adjustment process. The positioning groove 1443 in the damping switch 140 corresponds to the multiple air outlet holes in the second air outlet channel 139. Through the setting of the damping switch 140, when the valve core 130 rotates, when the inner ring air supply hole 115 is connected to an air outlet hole, the top stop member 147 in the elastic top stop assembly 145 is inserted into a positioning groove 1443, and the top stop member 147 collides with the positioning groove 1443 and emits a prompt sound, and can ensure that the valve core 130 remains in this position.

[0086] The following content will introduce in detail the process of firepower adjustment of the ball valve 100 of the present application, so as to understand the position changes of the first air outlet channel 138 and the outer ring air supply hole 114 in the valve core 130 and the position changes of the second air outlet channel 139 and the inner ring air supply hole 115 with the cooperation of the damping switch 140.

[0087] See also Fig.18a and Fig.19a ,exist Fig.18a and Fig.19a In the illustrated structure, the valve core 130 is in a position to close the valve body 110. The first air outlet channel 138 of the valve core 130 is not connected to the outer ring air supply hole 114 of the valve body 110, and the second air outlet channel 139 of the valve core 130 is not connected to the inner ring air supply hole 115 of the valve body 110.

[0088] See also Fig.18b and Fig.19b ,exist Fig.18b and Fig.19b In the structure shown, the valve core 130 rotates 27 degrees. It can be seen that the first air outlet channel 138 of the valve core 130 is not connected to the outer ring air supply hole 114 on the valve body 110, and the second air outlet channel 139 of the valve core 130 begins to connect with the inner ring air supply hole 115 on the valve body 110. The gas is sprayed into the inner ring nozzle in the burner through the gas supply hole and ignited by the ignition needle.

[0089] See also Fig.18c and Fig.19c ,exist Fig.18c and Fig.19c In the structure shown, the valve core 130 rotates 53 degrees, and it can be seen that the first air outlet channel 138 of the valve core 130 begins to communicate with the outer ring air supply hole 114 on the valve body 110, and the ignition hole 1397 of the second air outlet channel 139 of the valve core 130 is completely connected with the inner ring air supply hole 115 on the valve body 110, and the gas is ejected from the outer ring nozzle of the burner through the outer ring air supply hole 114 and ignited by the inner ring flame.

[0090] See also Fig.18d and Fig.19d ,exist Fig.18d and Fig.19d In the structure shown, the valve core 130 is rotated 90 degrees, and it can be seen that the first through hole 1381 of the first air outlet channel 138 of the valve core 130 is completely connected with the outer ring air supply hole 114 on the valve body 110, and the first air outlet hole 1391 in the second air outlet channel 139 of the valve core 130 is completely connected with the inner ring air supply hole 115 on the valve body 110. Since the first through hole 1381 and the first air outlet hole 1391 are both holes with larger apertures, the gas flow rate that can pass through the gas is the largest at this time, and the flame in the burner is the largest at this time, which is the outer ring maximum fire and the inner ring maximum fire.

[0091] See also Fig.18e and Fig.19e ,exist Fig.18e and Fig.19e In the structure shown, the valve core 130 rotates 120 degrees. It can be seen that the overlapping area between the first air outlet channel 138 of the valve core 130 and the outer ring air supply hole 114 on the valve body 110 changes. The area through which the gas passes per unit time becomes smaller, so that the gas flow output becomes smaller. The overlapping area between the first air outlet hole 1391 in the second air outlet channel 139 of the valve core 130 and the inner ring air supply hole 115 of the valve body 110 becomes smaller, and the second air outlet hole 1392 is also completely connected with the inner ring air supply hole 115 of the valve body 110. At this time, the inner ring flow is determined by the remaining contact area of ​​the first air outlet hole 1391 plus the aperture area of ​​the through hole of the second air outlet hole 1392. The smaller the area, the smaller the inner ring flow. At this time, the outer ring fire is large and the inner ring fire is large.

[0092] See also Fig.18f and Fig.19f ,exist Fig.18f and Fig.19fIn the structure shown, the valve core 130 rotates 150 degrees. It can be seen that the overlapping area of ​​the first air outlet channel 138 of the valve core 130 and the outer ring air supply hole 114 of the valve body changes. The area through which the gas passes per unit time becomes smaller, so that the gas flow output becomes smaller. The second air outlet hole 1392 through hole and the third air outlet hole 1393 of the second air outlet channel 139 of the valve core 130 are completely connected with the inner ring air supply hole 115 of the valve body 110. The area of ​​the third air outlet hole 1393 is smaller than the remaining contact area of ​​the first air outlet hole 1391 in the 120-degree state. At this time, the inner ring flow is smaller than the flow in the 120-degree state. The smaller the aperture, the smaller the inner ring flow. At this time, the outer ring is medium fire and the inner ring is medium fire.

[0093] See also Figure 18g and Figure 19g ,exist Figure 18g and Figure 19g In the structure shown, the valve core 130 rotates 180 degrees. It can be seen that the overlapping area of ​​the first air outlet channel 138 of the valve core 130 and the outer ring air supply hole 114 of the valve body 110 changes. The area through which the gas passes per unit time becomes smaller, so that the gas flow output becomes smaller. At this time, the outer ring flow is already very small; the first air outlet hole 1391 of the second air outlet channel 139 of the valve core 130 is no longer connected to the inner ring air supply hole 115, and the third air outlet hole 1393 continues to be fully connected to the inner ring air supply hole 115 of the valve body 110. Therefore, the inner ring flow at 180 degrees is smaller than that at 150 degrees. At this time, the outer ring is low fire and the inner ring is low fire.

[0094] From the above content, we can see that in the four flow changes from 90 degrees to 180 degrees, the outer ring and the inner ring both increase or decrease synchronously.

[0095] See also Figure 18h and Figure 19h ,exist Figure 18h and Figure 19h In the structure shown, the valve core 130 rotates 210 degrees. It can be seen that the first air outlet channel 138 of the valve core 130 is completely disconnected from the outer ring air supply hole 114 of the valve body 110, and there is no fire in the outer ring. The third air outlet hole 1393 of the second air outlet channel 139 of the valve core 130 is no longer connected to the inner ring air supply hole 115, and the fourth air outlet hole 1394 is completely connected to the inner ring air supply hole 115 of the valve body 110. At this time, the aperture of the fourth air outlet hole 1394 is very large, and the inner ring gas flow rate is very large. At this time, there is no fire in the outer ring but a large fire in the inner ring.

[0096] See also Fig.18i and Fig.19i ,exist Fig.18i and Fig.19iIn the structure shown, the valve core 130 rotates 240 degrees, and it can be seen that the first air outlet channel 138 of the valve core 130 is completely disconnected from the outer ring air supply hole 114 of the valve body 110, and there is no fire in the outer ring; the fourth air outlet hole 1394 of the second air outlet channel 139 of the valve core 130 is no longer connected to the inner ring air supply hole 115, and the fifth air outlet hole 1395 begins to be completely connected with the inner ring air supply hole 115 of the valve body 110. At this time, the aperture of the fifth air outlet hole 1395 is smaller, and the inner ring gas flow rate is reduced. At this time, there is no fire in the outer ring and there is fire in the inner ring.

[0097] See also Fig.18j and Fig.19j ,exist Fig.18j and Fig.19j In the structure shown, the valve core 130 rotates 270 degrees, and it can be seen that the first air outlet channel 138 of the valve core 130 is completely disconnected from the outer ring air supply hole 114 of the valve body 110, and there is no fire in the outer ring; the fifth air outlet hole 1395 of the second air outlet channel 139 of the valve core 130 is no longer connected to the inner ring air supply hole 115, and the sixth air outlet hole 1396 begins to be completely connected to the inner ring air supply hole 115 of the valve body 110. At this time, the aperture of the sixth air outlet hole 1396 is smaller than the aperture of the fifth air outlet hole 1395, and the inner ring gas flow rate is reduced. At this time, there is no fire in the outer ring and a small fire in the inner ring.

[0098] Based on the above content, the stopcock valve 100 of the present application is provided with a plurality of air outlet hole structures in the second air outlet channel 139, and cooperates with the positioning function of the damping switch 140 to achieve precise control of the size of the inner ring flame and meet people's different cooking needs.

[0099] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A plug valve, used in a gas stove, characterized in that: The plug valve comprises: Valve body; A valve stem, the valve stem partially extending into the valve body and being rotatable relative to the valve body; A damping switch, the damping switch comprising: A housing, wherein the housing is provided with a through hole penetrating in the thickness direction thereof, and the housing is further provided with a mounting portion capable of fixing the damping switch as a whole on the outside of the plug valve, the mounting portion being a connecting bracket extending from the housing to one side thereof, the connecting bracket being used for being fixedly connected to the plug valve, the housing being provided with an extending portion extending outward, the connecting bracket being connected to the side of the free end of the extending portion; A rotating member is accommodated in the housing and can rotate relative to the housing. The rotating member is provided with an axial hole, the axial hole is correspondingly connected to the through hole, and the valve stem is installed through the axial hole; One of the rotating member and the housing is provided with a plurality of positioning grooves arranged at intervals in the rotation direction of the valve stem, and the other of the two is provided with an elastic abutment component, and when the valve stem drives the rotating member to rotate, the elastic abutment component is stuck in one of the plurality of positioning grooves; and The micro switch is fixed together with the mounting portion and the valve body through a connecting piece, wherein the valve body is provided with a locking hole, the mounting portion is provided with a connecting hole, and the micro switch is provided with a mounting hole aligned with the connecting hole and the locking hole, and the damping switch, the micro switch and the valve body are fixed together by a connecting piece passing through the connecting hole and the mounting hole and being locked in the locking hole.

2. The plug valve according to claim 1, characterized in that The outer shell is installed with the elastic abutment assembly, and a plurality of the positioning grooves are arranged at intervals on the outer periphery of the rotating member. The elastic abutment assembly includes an elastic member and a abutment member. One end of the elastic member abuts the outer shell, and the other end abuts the abutment member. The elastic member provides elastic force to drive the abutment member to abut against the groove wall of the positioning groove and generate a prompt sound.

3. The plug valve according to claim 2, characterized in that A mounting groove is formed in the extension portion, one end of the elastic member extends into the mounting groove, and the other end extends out of the mounting groove and presses against the abutting member.

4. The plug valve according to claim 2, characterized in that The side of the abutting member facing the rotating member has an arc-shaped contact surface, and the opening shape of the positioning groove is matched with the outer contour shape of the abutting member.

5. The plug valve according to any one of claims 1 to 4, characterized in that: The rotating part includes a base portion with a plurality of positioning grooves arranged at intervals on the outer circumference and a positioning column connected to the base portion and extending to one side of the base portion, the axial hole passes through the positioning column and the base portion, and the outer shell is also provided with a positioning cylinder, which extends outward from the periphery of the through hole, and the positioning column and the axial hole of the positioning cylinder cooperate.

6. The plug valve according to claim 5, characterized in that The shell includes a base and a cover body detachably connected to the base, the through hole passes through the base and the cover body, the cover body includes a cover body with the through hole and the positioning cylinder connected to the cover body, and the positioning cylinder extends from the periphery of the through hole to the outside of the cover body.

7. The plug valve according to claim 6, characterized in that The micro switch is detachably connected to the valve body.

8. The plug valve according to claim 1, characterized in that A limiting groove is also arranged outside the valve body, and the micro switch is embedded in the limiting groove.

9. The plug valve according to claim 1, characterized in that The upper part of the valve body is also provided with a connecting cylinder extending upward, the valve stem passes through the connecting cylinder and extends into the valve body, the connecting cylinder is provided with a notch penetrating in its radial direction, and the micro switch passes through the notch to contact the valve stem.

10. The plug valve according to claim 9, characterized in that The bottom of the shell is provided with an annular groove surrounding the through hole, the inner wall of the annular groove is radially provided with a positioning protrusion, the end of the connecting tube is embedded in the annular groove, and the positioning protrusion is stuck in the notch.

11. A gas appliance, comprising a burner and a plug valve connected to the burner, characterized in that: The plug valve is the plug valve according to any one of claims 1 to 10.

Images