CN212959940U - Plug valve - Google Patents

Abstract

The utility model discloses a plug valve, which comprises a valve body component, a plug valve core, a plug valve rod and a flameout protection mechanism; the valve body assembly comprises a valve body main body and a valve body cover plate which are connected in an end face sealing manner, wherein the valve body main body is provided with a gas inlet channel, a solenoid valve channel, a gas outlet channel and a valve core channel which can be respectively communicated with the solenoid valve channel and the gas outlet channel, and is also provided with a first communication cavity communicated with the gas inlet channel and the solenoid valve channel; the plug valve core can be rotatably arranged in the valve core channel and can control the ventilation condition of the valve core channel and the air outlet channel; the cock valve rod is movably inserted in the valve body main body and can drive the cock valve core to rotate; the flameout protection mechanism comprises a transmission assembly and an electromagnetic valve arranged in an electromagnetic valve channel, and the plug valve rod is connected with the transmission assembly and can push the electromagnetic valve through the plug valve rod so as to enable the valve core channel to be communicated with the electromagnetic valve channel. The utility model has the advantages of simple and reasonable structure, make things convenient for the manufacturing.

Description

Plug valve

Technical Field

The utility model relates to a valve body field, in particular to plug valve.

Background

At present, it is generally including the subassembly of lighting a fire at cooking utensils or stove with the gas as the energy, the plug valve, the furnace end etc, the plug valve is the most extensive valve body structure of a kind of use, the plug valve generally includes cock valve rod and cock case, be provided with two at least gas pockets of different sizes on the different positions of the interior gas cavity wall of cock case, it rotates to drive the cock case through manual rotatory cock valve rod, thereby can adjust case passageway and different gas pockets and be linked together, and then make the firepower of gas utensil can adjust, for realizing that the plug valve has flame-out protection function, it can be provided with the solenoid valve of the thermocouple connection with the gas utensil generally, the solenoid valve is connected between admission channel and case passageway, can open and close according to the flame condition control of thermocouple, so that admission channel can and the case passageway between realize the air. The existing plug valve is complex in internal channel structure, large in processing difficulty of processing and communicating different channels, time-consuming and labor-consuming in processing, difficult in manufacturing yield, and difficult in control, so that the production cost is wasted, and the plug valve is not beneficial to production and application.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a plug valve, its simple structure is reasonable, can make things convenient for manufacturing processing.

The plug valve comprises a valve body assembly, a plug valve core, a plug valve rod and a flameout protection mechanism; the valve body assembly comprises a valve body main body and a valve body cover plate, wherein a gas inlet channel, an electromagnetic valve channel, a valve core channel and a gas outlet channel are arranged on the valve body main body, the left end face of the valve body main body is connected with the right end face of the valve body cover plate in a sealing manner, a first communication cavity with an opening at the left end is arranged on the valve body main body and is respectively communicated with the gas inlet channel and the electromagnetic valve channel, a protruding part capable of plugging the opening of the first communication cavity is arranged on the valve body cover plate, the valve core channel can be communicated with the electromagnetic valve channel, and the valve core channel can be communicated with the gas outlet channel; the plug valve core is rotatably arranged in the valve core channel and can control the ventilation condition between the valve core channel and the air outlet channel; the plug valve rod is movably inserted in the valve body main body, and one end of the plug valve rod extends into the valve core channel and can drive the plug valve core to rotate; the flameout protection mechanism comprises a transmission assembly and an electromagnetic valve arranged in an electromagnetic valve channel, the electromagnetic valve can control the communication or the closing of the electromagnetic valve channel and the valve core channel, and the cock valve rod is connected with the transmission assembly and can push the electromagnetic valve through the transmission assembly so that the valve core channel is communicated with the electromagnetic valve channel.

According to the utility model discloses plug valve, it has following beneficial effect at least: through setting up valve body main part and valve body apron, first intercommunication chamber has been seted up in the valve body main part, and first intercommunication chamber processes passageway and inlet channel and solenoid valve passageway intercommunication respectively, can make things convenient for the utility model discloses a processing is established in the commentaries on classics of passageway, and sets up the open-ended bellying that is used for the first intercommunication chamber of shutoff at the valve body apron to sealed first intercommunication chamber, thereby avoid the gas between inlet channel and the solenoid valve passageway to carry and produce the production and leak, its simple structure is reasonable, can make things convenient for the manufacturing of valve body subassembly, reduction in production cost.

According to the utility model discloses a some embodiments, still be equipped with left end open-ended second intercommunication chamber in the valve body main part, second intercommunication chamber communicates respectively the case passageway with the solenoid valve passageway, the valve body apron can shield the opening in second intercommunication chamber. Through having seted up second intercommunication chamber in the valve body main part, second intercommunication chamber is processing channel respectively and is linked together with case passageway and solenoid valve passageway, can make things convenient for the utility model discloses a processing is established in the commentaries on classics of passageway, and its simple structure is reasonable, can further make things convenient for the manufacturing of valve body subassembly to process reduction in production cost.

According to some embodiments of the utility model, transmission assembly includes push rod and transfer line, push rod wears to establish plug case and with the plug valve rod is connected, the transfer line is rotatable set up in second intercommunication chamber, be equipped with first rotation portion and second rotation portion on the transfer line, push rod can push up first rotation portion is in order to drive the transfer line rotates, the transfer line can pass through second rotation portion top pushes away the solenoid valve is in order to make second intercommunication chamber with communicate between the solenoid valve passageway. By arranging the push rod and the transmission rod, when the plug valve is used, the plug valve rod is pushed to move leftwards, the first rotating part is pushed by the push rod to rotate the transmission rod, the transmission rod rotates and drives the second rotating part to rotate, the second rotating part pushes the electromagnetic valve to open, the valve core channel and the electromagnetic valve channel are communicated, gas can enter from the gas inlet channel and is conveyed to the valve core channel through the electromagnetic valve channel and the second communicating cavity, the plug valve rod is rotated at the same time, the plug valve core is communicated with the valve core channel and the gas outlet channel, the gas is output from the gas outlet channel, meanwhile, ignition is carried out, a thermocouple on a gas appliance generates electric potential to keep the electromagnetic valve open, then the push of the plug valve rod is released, and; when the gas appliance is flamed out, the electric potential of the thermocouple disappears to close the electromagnetic valve, and the air outlet end of the electromagnetic valve channel is blocked, so that the gas output is cut off. The transmission mechanism is simple in structure, convenient to produce and assemble and capable of playing a good transmission role.

According to some embodiments of the utility model, the cover is equipped with the elastic component on the ejector pin, the ejector pin can under the effect of elastic component the butt in the cock valve rod. Through setting up the elastic component, the ejector pin passes through the effect butt of elastic component in the cock valve rod, can make things convenient for the cock valve rod to promote the ejector pin and remove, and can realize the removal of ejector pin through the elastic component and reset, can make the cock valve rod can the butt improve in the valve body main part through the butt effect of ejector pin simultaneously the utility model discloses a connection stability and reliability.

According to some embodiments of the utility model, be equipped with on the valve body apron and dodge concave position, dodge concave position can with the cooperation of second intercommunication chamber is in order to right the rotation of transfer line forms dodges. The avoidance concave position and the second communication cavity are matched to avoid the rotation of the transmission rod, the transmission rod can be conveniently rotated, the transmission rod can be conveniently installed, the structure is simple, and production, manufacturing and machining can be conveniently achieved.

According to some embodiments of the utility model, be equipped with two at least and the unequal ventholes of diameter on the case passageway, the case passageway can pass through the venthole with air outlet channel intercommunication, be equipped with on the cock case and correspond the air vent that the venthole set up, the cock case can shield the venthole, the case passageway can pass through the air vent with correspond the venthole communicates. When adjusting the firepower size, accessible cock valve rod drives the cock case and rotates, and intercommunication between the venthole that differs through the diameter and the air vent that corresponds makes case passageway and air outlet channel intercommunication to change the air output, with the condition of ventilating that realizes that the cock case can control between case passageway and the air outlet channel, its simple structure and convenient realization.

According to the utility model discloses a some embodiments, still be equipped with left end open-ended third intercommunication chamber in the valve body main part, third intercommunication chamber communicates respectively air outlet channel with the venthole, the valve body apron can shield the opening in third intercommunication chamber. Through having seted up the third intercommunication chamber in the valve body main part, the third intercommunication chamber is processing channel respectively and is given vent to anger passageway and venthole intercommunication, can make things convenient for the utility model discloses a processing is established in the commentaries on classics of passageway, and its simple structure is reasonable, can further make things convenient for the manufacturing of valve body subassembly to process reduction in production cost.

According to some embodiments of the utility model, be equipped with on the cock valve rod along the connecting portion that radial arch formed, the correspondence is equipped with the confession on the cock case connecting portion male spread groove. Through forming connecting portion on the cock valve rod, accessible connecting portion insert the spread groove on the cock case when adjusting the firepower size to make the cock valve rod can drive the cock case and rotate, its simple structure and convenient manufacturing, the transmission is connected reliably and stably.

According to the utility model discloses a some embodiments, be equipped with in the valve body main part and be located the boss is changeed to the limit of case passageway right-hand member, the limit is changeed the boss and is followed the axial protruding height dimension of case passageway is greater than the cock valve rod is followed the axial portable stroke distance of case passageway. Through setting up the protruding height dimension of limit commentaries on classics boss along case passageway axial and being greater than the cock valve rod along case passageway axial portable stroke distance for when the cock valve rod moves left and ignites the operation, make it can not cross the limit commentaries on classics boss, restrict its rotation direction, improve its reliability of using.

According to the utility model discloses a some embodiments, be equipped with in the valve body main part and be used for the micro-gap switch with the ignition module electric connection of gas utensil, rotatable cover is equipped with the preforming of supporting on the cock valve rod, it can follow to support the preforming the cock valve rod removes and can trigger micro-gap switch. Through setting up to preforming and micro-gap switch, when the operation of igniteing, the cock valve rod moves left and drives to support the preforming and move left and support and press and trigger micro-gap switch, makes the solenoid valve passageway open through drive assembly simultaneously, realizes the gas output, and micro-gap switch control ignition assembly ignites the operation to the gas of output to the ignition burning use of realization gas utensil, its simple structure, and the installation of being convenient for can be convenient the utility model discloses a manufacturing.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a plug valve according to an embodiment of the present invention;

FIG. 2 is one of the schematic cross-sectional structural views of the plug valve of FIG. 1;

FIG. 3 is a second schematic cross-sectional view of the plug valve of FIG. 1;

FIG. 4 is a third schematic cross-sectional view of the plug valve of FIG. 1;

FIG. 5 is a fourth schematic cross-sectional view of the plug valve of FIG. 1;

FIG. 6 is a fifth schematic sectional view of the plug valve of FIG. 1;

FIG. 7 is one of the schematic partial structural views of the plug valve of FIG. 1;

FIG. 8 is a second schematic diagram of a portion of the plug valve of FIG. 1;

fig. 9 is a third schematic view of a partial structure of the plug valve of fig. 1.

Reference numerals:

the rotary limiting valve comprises a valve body assembly 100, a valve body main body 110, an air inlet channel 111, an electromagnetic valve channel 112, a valve core channel 113, an air outlet channel 114, a first communicating cavity 115, a second communicating cavity 116, an air outlet hole 117, a third communicating cavity 118, a rotary limiting boss 119, a valve body cover plate 120, a convex part 121, an avoiding concave position 122 and a microswitch 130;

the cock valve core 200, the vent hole 210 and the connecting groove 220;

the cock valve stem 300, the connecting portion 310, the pressing piece 320;

flameout protection mechanism 400, transmission assembly 410, ejector rod 411, transmission rod 412, first rotating part 413, second rotating part 414, elastic piece 415 and solenoid valve 420.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that if an orientation description is referred to, for example, the directions or positional relationships indicated by the upper, lower, front, rear, left, right, etc. are the directions or positional relationships shown on the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are several, greater than, less than, exceeding, above, below, within, etc., the terms, wherein several means are one or more, and several means are two or more, and greater than, less than, exceeding, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, 2, 3 and 4, a plug valve includes a valve body assembly 100, a plug valve cartridge 200, a plug valve stem 300 and a misfire protection mechanism 400; the valve body assembly 100 comprises a valve body main body 110 and a valve body cover plate 120, wherein the valve body main body 110 is provided with an air inlet channel 111, an electromagnetic valve channel 112, a valve core channel 113 and an air outlet channel 114, the left end surface of the valve body main body 110 is hermetically connected with the right end surface of the valve body cover plate 120, as shown in fig. 7 and 8, the valve body main body 110 is provided with a first communicating cavity 115 with an opening at the left end, the first communicating cavity 115 is respectively communicated with the air inlet channel 111 and the electromagnetic valve channel 112, the valve body cover plate 120 is provided with a protruding part 121 capable of plugging the opening of the first communicating cavity 115, the valve core channel 113 can be communicated with the electromagnetic valve channel 112, and the; the plug valve core 200 is rotatably arranged in the valve core channel 113, and the plug valve core 200 can control the ventilation condition between the valve core channel 113 and the air outlet channel 114; the cock valve rod 300 is movably inserted into the valve body main body 110, and one end of the cock valve rod 300 extends into the valve core channel 113 and can drive the cock valve core 200 to rotate; the flameout protection mechanism 400 includes a transmission assembly 410 and a solenoid valve 420 disposed in the solenoid valve channel 112, the solenoid valve 420 can control the communication or the closing between the solenoid valve channel 112 and the valve core channel 113, the cock valve rod 300 is connected to the transmission assembly 410 and can push the solenoid valve 420 through the transmission assembly 410 to enable the communication between the valve core channel 113 and the solenoid valve channel 112.

In this embodiment, as shown in fig. 7 and 8, through setting up valve body main part 110 and valve body apron 120, during manufacturing, change the hole respectively on the valve body main part 110 and establish solenoid valve passageway 112 and inlet channel 111, process out first intercommunication chamber 115 afterwards, process passageway and inlet channel 111 and solenoid valve passageway 112 intercommunication respectively again in first intercommunication chamber 115, can make things convenient for the utility model discloses a processing is established in the commentaries on classics of passageway, and sets up the bellying 121 that is used for the opening of shutoff first intercommunication chamber 115 at valve body apron 120 to sealed first intercommunication chamber 115, thereby avoid the gas transport between inlet channel 111 and the solenoid valve passageway 112 to produce and leak, its simple structure is reasonable, can make things convenient for the manufacturing of valve body subassembly 100, reduction in production cost. In practical application, a good sealing effect is realized, a sealing rubber ring can be arranged between the connecting end faces of the valve body main body 110 and the valve body cover plate 120, and a sealing rubber ring can be arranged between the first communicating cavity 115 and the protruding portion 121, which is not limited herein. The specific structure of the plug valve can be set according to actual use requirements, and is not described in detail herein, and is described in detail below.

In some embodiments, the valve body main body 110 is further provided with a second communication chamber 116 with an open left end, the second communication chamber 116 communicates with the spool passage 113 and the solenoid valve passage 112, respectively, and the valve body cover plate 120 can cover the opening of the second communication chamber 116. In this embodiment, as shown in fig. 7, through having seted up second intercommunication chamber 116 on valve body main part 110, second intercommunication chamber 116 is the processing passageway respectively and is linked together with case passageway 113 and solenoid valve passageway 112, can make things convenient for the utility model discloses a processing is established in the commentaries on classics of passageway, and its simple structure is reasonable, can further make things convenient for the manufacturing of valve body subassembly 100, reduction in production cost. In practical application, besides the second communicating cavity 116 is provided on the valve body main body 110 to facilitate the communicating process between the valve core channel 113 and the electromagnetic valve channel 112, a communicating cavity can be provided on the valve body cover plate 120 to communicate the two, or the valve core channel 113 and the electromagnetic valve channel 112 are directly communicated.

In some embodiments, the transmission assembly 410 includes a push rod 411 and a transmission rod 412, the push rod 411 penetrates through the plug valve core 200 and is connected to the plug valve rod 300, the transmission rod 412 is rotatably disposed in the second communicating chamber 116, the transmission rod 412 is provided with a first rotating portion 413 and a second rotating portion 414, the push rod 411 can push the first rotating portion 413 to drive the transmission rod 412 to rotate, and the transmission rod 412 can push the solenoid valve 420 through the second rotating portion 414 to enable communication between the second communicating chamber 116 and the solenoid valve channel 112. In this embodiment, as shown in fig. 2, 5, 7 and 8, by providing the knock rod 411 and the transmission rod 412, the plug valve, when in use, pushes the plug valve stem 300 to move leftward, the push rod 411 pushes the first rotating part 413 to rotate the transmission rod 412, the transmission rod 412 rotates and drives the second rotating part 414 to rotate, the second rotating part 414 pushes the electromagnetic valve 420 to open, the valve core channel 113 and the electromagnetic valve channel 112 are communicated, gas can enter from the gas inlet channel 111 and is conveyed to the valve core channel 113 through the electromagnetic valve channel 112 and the second communicating cavity 116, and simultaneously, the cock valve stem 300 is rotated to make the cock valve core 200 communicate the valve core passage 113 and the gas outlet passage 114, the gas is output from the gas outlet passage 114, ignition is carried out simultaneously to enable a thermocouple on the gas appliance to generate electric potential to enable the electromagnetic valve 420 to be kept open, then the pressing on the cock valve rod 300 is released, and the transmission assembly 410 is reset; when the gas appliance is flamed out, the electric potential of the thermocouple disappears to close the electromagnetic valve 420, and the air outlet end of the electromagnetic valve channel 112 is blocked, so that the gas output is cut off. The transmission mechanism is simple in structure, convenient to produce and assemble and capable of playing a good transmission role. In practical application, the specific structure of the transmission assembly 410 can be changed according to the connection condition between the channels, for example, when the solenoid valve channel 112 is directly communicated with the valve core channel 113, the solenoid valve 420 can be pushed by the push rod 411 alone; meanwhile, the structure for implementing flameout protection by arranging the electromagnetic valve 420 to cooperate with the thermocouple on the gas appliance is a flameout protection structure which is commonly used in the art, and the specific composition and principle thereof are known to those skilled in the art, and therefore, will not be described in detail herein.

In some embodiments, the ejector pin 411 is sleeved with an elastic member 415, and the ejector pin 411 can abut against the plug valve stem 300 under the action of the elastic member 415. In this embodiment, as shown in fig. 2 and 3, through setting up elastic component 415, the ejector pin 411 can make things convenient for the cock valve rod 300 to promote the ejector pin 411 to remove through the effect butt of elastic component 415 in the cock valve rod 300, and can realize the removal of ejector pin 411 through elastic component 415 and reset, can make the cock valve rod 300 can the butt on valve body main part 110 through the butt effect of ejector pin 411 simultaneously, improves the utility model discloses a connection stability and reliability. Certainly, during the practical application, besides setting up elastic component 415, still can set up the joint between cock valve rod 300 and the ejector pin 411, drive ejector pin 411 through cock valve rod 300 and remove and reset, specifically can be according to the corresponding change of in-service use needs.

In some embodiments, the valve body cover plate 120 is provided with an avoiding concave portion 122, and the avoiding concave portion 122 can cooperate with the second communication cavity 116 to avoid the rotation of the transmission rod 412. In the embodiment, as shown in fig. 2, 7 and 8, the avoidance concave portion 122 is arranged to cooperate with the second communicating cavity 116 to avoid the rotation of the transmission rod 412, so that on one hand, the rotation of the transmission rod 412 and the installation of the transmission rod 412 can be facilitated, on the other hand, the communication and ventilation between the solenoid valve channel 112 and the valve core channel 113 can be facilitated, the structure is simple, and the production, manufacturing and processing can be facilitated. In practical applications, the shape of the avoiding recess 122 can be adapted to the specific structural shape of the transmission rod 412, and is not limited herein.

In some embodiments, at least two air outlet holes 117 with different diameters are formed in the valve core channel 113, the valve core channel 113 can be communicated with the air outlet channel 114 through the air outlet holes 117, a vent hole 210 corresponding to the air outlet holes 117 is formed in the plug valve core 200, the plug valve core 200 can shield the air outlet holes 117, and the valve core channel 113 can be communicated with the corresponding air outlet holes 117 through the vent hole 210. In this embodiment, as shown in fig. 2 and 4, when the fire power is adjusted, the plug valve core 200 may be driven to rotate by the plug valve rod 300, and the valve core channel 113 and the air outlet channel 114 may be communicated by the communication between the air outlet holes 117 with different diameters and the corresponding vent holes 210, so as to change the air outlet amount, so that the plug valve core 200 may control the ventilation condition between the valve core channel 113 and the air outlet channel 114, and the structure is simple and convenient to implement. In practical applications, the number of the air outlet holes 117 may be set according to practical needs, for example, two, three or more, the ventilation holes 210 may also be provided with a plurality of corresponding holes, and may also be configured as a strip-shaped hole structure, so as to change the ventilation area, and the specific structure and principle of controlling the ventilation between the valve core channel 113 and the air outlet channel 114 through the plug valve core 200 are known to those skilled in the art, and therefore will not be described in detail herein.

In some embodiments, the valve body main body 110 is further provided with a third communicating cavity 118 with an open left end, the third communicating cavity 118 is respectively communicated with the air outlet channel 114 and the air outlet hole 117, and the valve body cover plate 120 can shield the opening of the third communicating cavity 118. In this embodiment, as shown in fig. 4, 6 and 7, through having seted up third intercommunication chamber 118 on valve body main part 110, third intercommunication chamber 118 is the processing passageway respectively and is communicate with gas outlet channel 114 and venthole 117, can make things convenient for the utility model discloses a processing is established in the commentaries on classics of passageway, and its simple structure is reasonable, can further make things convenient for the manufacturing of valve body subassembly 100, reduction in production cost. In practical application, besides the third communicating cavity 118 is provided on the valve body main body 110 to facilitate the communicating processing between the air outlet channel 114 and the air outlet hole 117, a communicating cavity can be provided on the valve body cover plate 120 to communicate the two, or the air outlet channel 114 and the air outlet hole 117 are directly processed and communicated.

In some embodiments, the cock valve stem 300 is provided with a coupling portion 310 formed to protrude in a radial direction, and the cock valve core 200 is correspondingly provided with a coupling groove 220 into which the coupling portion 310 is inserted. In the present embodiment, as shown in fig. 3 and 9, by forming the connection portion 310 on the cock stem 300, the fire power can be adjusted by inserting the connection portion 310 into the connection groove 220 on the cock core 200, so that the cock stem 300 can drive the cock core 200 to rotate, the structure is simple, the manufacturing process is convenient, and the transmission connection is stable and reliable. In practice, the plug valve rod 300 may be connected by a sleeve connection piece or other clamping structure, besides the connection portion 310, as will be understood by those skilled in the art.

In some embodiments, the valve body 110 is provided with a rotation limiting boss 119 at the right end of the spool passage 113, and the height of the rotation limiting boss 119 in the axial direction of the spool passage 113 is greater than the movable stroke distance of the plug valve stem 300 in the axial direction of the spool passage 113. In the present embodiment, as shown in fig. 2, 3 and 9, the protruding height dimension of the rotation limiting boss 119 in the axial direction of the spool passage 113 is larger than the movable stroke distance of the cock valve rod 300 in the axial direction of the spool passage 113, so that when the cock valve rod 300 moves to the left to perform an ignition operation, the rotation limiting boss 119 cannot be passed by the rotation limiting boss, the rotation direction of the cock valve rod is limited, and the reliability of the use of the cock valve rod is improved. In practical application, besides the rotation limiting boss 119 is arranged to have a protruding height dimension along the axial direction of the spool passage 113 greater than the movable travel distance of the plug valve rod 300 along the axial direction of the spool passage 113 to limit the rotation direction, the valve body main body 110 can be further provided with a structure for limiting the rotation direction to limit the rotatable direction of the plug valve rod 300, and the structure can be specifically set according to actual use requirements without limitation.

In some embodiments, the valve body 110 is provided with a micro switch 130 for electrically connecting with an ignition assembly of a gas appliance, and the cock stem 300 is rotatably sleeved with a pressing piece 320, wherein the pressing piece 320 can move along with the cock stem 300 and can trigger the micro switch 130. In this embodiment, as shown in fig. 3 and fig. 6, through setting up to preforming 320 and micro-gap switch 130, when carrying out the ignition operation, plug valve rod 300 moves left and drives to support preforming 320 and move left and support and press and trigger micro-gap switch 130, makes solenoid valve passageway 112 open through drive assembly 410 simultaneously, realizes the gas output, and micro-gap switch 130 control ignition assembly carries out the ignition operation to the gas of output to realize the ignition burning use of gas utensil, its simple structure, and be convenient for install, can make things convenient for the utility model discloses a manufacturing. The specific structure and principle of the ignition start and stop control of the ignition assembly by the cooperation of the pressing piece 320 and the micro switch 130 are well known to those skilled in the art, and therefore will not be described in detail herein. In practical application, the ignition component can be controlled to be ignited and turned on or turned off by arranging a hammer, piezoelectric ceramics and the like, and the control method can be understood by a person skilled in the art.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. A plug valve, comprising:

the valve body assembly (100) comprises a valve body main body (110) and a valve body cover plate (120), wherein a gas inlet channel (111), an electromagnetic valve channel (112), a valve core channel (113) and a gas outlet channel (114) are arranged on the valve body main body (110), the left end face of the valve body main body (110) is in sealing connection with the right end face of the valve body cover plate (120), a first communicating cavity (115) with an opening at the left end is arranged on the valve body main body (110), the first communicating cavity (115) is respectively communicated with the gas inlet channel (111) and the electromagnetic valve channel (112), a protruding part (121) capable of plugging the opening of the first communicating cavity (115) is arranged on the valve body cover plate (120), the valve core channel (113) can be communicated with the electromagnetic valve channel (112), and the valve core channel (113) can be communicated with the gas outlet channel (114);

the plug valve core (200) is rotatably arranged in the valve core channel (113), and the plug valve core (200) can control the ventilation condition between the valve core channel (113) and the air outlet channel (114);

the plug valve rod (300) is movably inserted into the valve body main body (110), and one end of the plug valve rod (300) extends into the valve core channel (113) and can drive the plug valve core (200) to rotate;

the flameout protection mechanism (400) comprises a transmission assembly (410) and an electromagnetic valve (420) arranged in the electromagnetic valve channel (112), wherein the electromagnetic valve (420) can control the communication or the closing between the electromagnetic valve channel (112) and the valve core channel (113), the plug valve rod (300) is connected with the transmission assembly (410) and can push the electromagnetic valve (420) through the transmission assembly (410) so that the valve core channel (113) is communicated with the electromagnetic valve channel (112).

2. The plug valve of claim 1,

the valve body main body (110) is further provided with a second communicating cavity (116) with an opening at the left end, the second communicating cavity (116) is respectively communicated with the valve core channel (113) and the electromagnetic valve channel (112), and the valve body cover plate (120) can shield the opening of the second communicating cavity (116).

3. The plug valve of claim 2,

the transmission assembly (410) comprises a push rod (411) and a transmission rod (412), the push rod (411) penetrates through the plug valve core (200) and is connected with the plug valve rod (300), the transmission rod (412) is rotatably arranged in the second communication cavity (116), a first rotating portion (413) and a second rotating portion (414) are arranged on the transmission rod (412), the push rod (411) can push the first rotating portion (413) to drive the transmission rod (412) to rotate, and the transmission rod (412) can push the electromagnetic valve (420) through the second rotating portion (414) to enable the second communication cavity (116) to be communicated with the electromagnetic valve channel (112).

4. The plug valve of claim 3,

the ejector rod (411) is sleeved with an elastic piece (415), and the ejector rod (411) can abut against the plug valve rod (300) under the action of the elastic piece (415).

5. The plug valve of claim 3,

an avoiding concave position (122) is arranged on the valve body cover plate (120), and the avoiding concave position (122) can be matched with the second communication cavity (116) to avoid the rotation of the transmission rod (412).

6. The plug valve of claim 1,

the plug valve comprises a plug valve core (200) and is characterized in that at least two air outlet holes (117) with unequal diameters are formed in the plug valve core channel (113), the plug valve core channel (113) can be communicated with an air outlet channel (114) through the air outlet holes (117), vent holes (210) arranged corresponding to the air outlet holes (117) are formed in the plug valve core (200), the plug valve core (200) can shield the air outlet holes (117), and the plug valve core channel (113) can be communicated with the corresponding air outlet holes (117) through the vent holes (210).

7. The plug valve of claim 6,

the valve body main body (110) is further provided with a third communicating cavity (118) with an opening at the left end, the third communicating cavity (118) is communicated with the air outlet channel (114) and the air outlet hole (117) respectively, and the valve body cover plate (120) can shield the opening of the third communicating cavity (118).

8. The plug valve of claim 1,

the plug valve comprises a plug valve core (200), a plug valve rod (300) and a plug valve core (200), wherein the plug valve rod (300) is provided with a connecting part (310) which is formed by protruding along the radial direction, and the plug valve core (200) is correspondingly provided with a connecting groove (220) for inserting the connecting part (310).

9. The plug valve of claim 8,

the valve body main body (110) is provided with a rotation limiting boss (119) positioned at the right end of the valve core channel (113), and the protruding height dimension of the rotation limiting boss (119) along the axial direction of the valve core channel (113) is larger than the movable stroke distance of the plug valve rod (300) along the axial direction of the valve core channel (113).

10. The plug valve of claim 1,

the gas appliance ignition device is characterized in that a microswitch (130) electrically connected with an ignition assembly of a gas appliance is arranged on the valve body main body (110), a pressing piece (320) is rotatably sleeved on the cock valve rod (300), and the pressing piece (320) can move along with the cock valve rod (300) and can trigger the microswitch (130).

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