CN110985711A - Coaxial gas control valve - Google Patents

Abstract

The invention discloses a coaxial gas control valve, which comprises a valve body and a valve core arranged in the valve body, wherein the valve body is internally provided with a gas inlet channel, a gas outlet channel and an ever-burning flame gas outlet channel, a driving rod is arranged on the valve body in a rotating manner, the valve core can be driven by the driving rod to rotate and control the communication state of the gas inlet channel, the gas outlet channel and the ever-burning flame gas outlet channel, a control piece capable of controlling the gas outlet quantity of the gas outlet channel is arranged in the valve body, the driving rod, the valve core and the control piece are coaxially arranged, the driving rod can drive the control piece to move through the valve core when rotating, the control piece can control the gas outlet quantity of the gas outlet channel when moving, as the driving rod, the valve core and the control piece are coaxially arranged, the three parts can be linked in the axial direction, the control is direct and convenient, a gear transmission, the installation and the use are convenient.

Description

Coaxial gas control valve

Technical Field

The invention relates to the field of gas valves, in particular to a coaxial gas control valve.

Background

Conventional gas control valves are when the knob is depressed. Triggering the safety electromagnetic valve to open the air inlet channel, triggering the ignition switch when the knob continues to rotate to the pilot open fire opening angle, simultaneously driving the valve core to rotate to connect the air inlet channel to the inside of the gas valve and ventilating the pilot open fire channel to ignite the pilot open fire, when the knob continues to rotate to the main opening angle, the rotating shaft opens the valve plate to inflate the air outlet channel and ignite the main fire, however, the current gas valve structure basically adopts a structure that the valve core is parallel to the rotating shaft and the valve plate, as in the Chinese invention patent with the patent No. 201821389218.0, because of adopting the parallel structure, the structure is complex and the assembly difficulty is large, and the valve plate needs to be opened continuously and rotated to be opened when the pilot open fire is kept to be opened, the gear with a missing tooth section is also needed to be adopted to connect, so that the rotating shaft does not drive the valve core to rotate after rotating a certain angle, the gear is complex in processing technology, and the requirement is higher, so the production cost of the gas valve is higher.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art and provide a coaxial gas control valve which is simple and reasonable in structure.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a coaxial gas control valve, includes the valve body and sets up the case in the valve body, inlet channel, outlet channel and ever-burning flame outlet channel have in the valve body, it is provided with the actuating lever to rotate on the valve body, the case can be driven by the actuating lever and rotate and control inlet channel and outlet channel, ever-burning flame outlet channel's the connected state, dispose the control that can control outlet channel's the air output in the valve body, actuating lever, case, the coaxial setting of control, just the actuating lever can drive the control through the case and remove when rotating, the control can control outlet channel's air output when removing.

One of the above technical solutions has at least one of the following advantages or beneficial effects: because the driving rod, the valve core and the control part are coaxially arranged, the linkage of the driving rod, the valve core and the control part can be realized in the axial direction, the control is direct and convenient, a gear transmission mechanism is not required to be additionally configured, the mechanism is simpler and more reasonable, the transverse width of the gas control valve can be reduced, and the installation and the use are convenient.

According to some embodiments of the invention, the valve body is further provided with an electromagnetic valve for controlling the opening and closing of the air inlet channel, the valve body is slidably provided with an ejector rod corresponding to the electromagnetic valve, a pushing structure is arranged between the driving rod and the ejector rod, and the driving rod can drive the ejector rod to push against the electromagnetic valve to open the air inlet channel when pushing inwards, so that air enters the valve body.

According to some embodiments of the invention, the pushing structure is a pushing piece fixed on the driving rod, the pushing piece is arranged opposite to the ejector rod so as to push the ejector rod to move downwards, and the ejector rod is provided with a return spring capable of automatically returning when the ejector rod is not pushed.

According to some embodiments of the invention, the upper part of the valve core is provided with a connecting groove, and the lower end of the driving rod is inserted into the connecting groove, so that the driving rod can drive the valve core to rotate and can axially move relative to the valve core, thereby realizing the transmission of the driving rod and the valve core without influencing the axial movement of the driving rod.

According to some embodiments of the present invention, a valve port is disposed in the valve body, the control element is a sheet structure corresponding to the valve port, the control element is disposed below the valve port and can move up and down, and the control element can control the opening degree of the valve port when moving up and down, so as to control the gas output of the gas outlet channel.

According to some embodiments of the invention, the control member is arranged on a valve rod, the lower end of the valve core is provided with a connecting hole in sliding fit with the upper end of the valve rod, the valve core can drive the valve rod to rotate and the valve rod can move relative to the valve core, the lower end of the valve rod is provided with a threaded hole with a downward opening, the valve body is provided with a stud matched with the threaded hole, when the valve core rotates, the valve rod can be driven to rotate, and the valve rod moves up and down through threaded fit, so that the function of adjusting air quantity by moving up and down of the control.

According to some embodiments of the present invention, the valve body is configured with a thermal expansion valve, the thermal expansion valve includes a thermal bulb, the thermal bulb can drive the control element to close the valve port when being heated, the stud is disposed on the thermal expansion valve and can be driven by the thermal expansion valve, so as to achieve the function of driving the control element to close the valve port, and the thermal bulb can be disposed on the heated object in the actual application process to prevent dry burning or over-high temperature.

According to some embodiments of the present invention, the valve body is provided therein with a gas distribution channel and a valve core cavity for installing the valve core, the gas distribution channel is communicated with the valve core cavity and the gas inlet channel, the pilot fire gas outlet channel is communicated with the valve core cavity, the lower part of the valve core cavity is opened and communicated with the gas outlet channel, the valve core is in running fit with the valve core cavity, the valve core is provided with a pilot fire gas distribution channel and a main gas distribution channel, the valve core has a main opening angle and a pilot fire opening angle, when the valve core rotates to the pilot fire opening angle, the pilot fire gas distribution channel is communicated with the gas distribution channel and the pilot fire gas outlet channel, the pilot fire can be ignited by the ignition switch, when the valve core rotates from the pilot fire opening angle to the main opening angle, the pilot fire gas distribution channel keeps communicated with the gas distribution channel and the pilot fire gas outlet channel, so that the pilot fire is continuously ignited, when the valve core rotates to the main opening angle, the main gas distribution channel is communicated with the gas distribution channel and the gas outlet channel, and meanwhile, the control piece moves to the position for opening the gas outlet channel, so that main fire is ignited, and the gas control function of the gas valve is realized.

According to some embodiments of the present invention, the open flame gas distribution channel includes an annular channel annularly disposed on the valve element and an arc-shaped channel disposed in a circumferential direction of the valve element, the annular channel is communicated with the open flame gas outlet channel and is kept communicated with the arc-shaped channel during rotation of the valve element, the arc-shaped channel is communicated with the gas distribution channel during rotation of the valve element from the open flame open angle to the main open angle, and the annular channel is communicated with the arc-shaped channel through a connection channel, so that gas supply of the open flame gas outlet channel is kept during rotation of the open flame open angle to the main open angle.

According to some embodiments of the invention, the arc-shaped channel and the air distribution channel are arranged in parallel and are approximately perpendicular to the axis of the valve core, so that the up-down position deviation cannot occur in the rotation process of the valve core, and the communication performance of the valve core is ensured.

According to some embodiments of the present invention, the main distribution channel communicates with the bottom of the valve element and communicates with the air outlet channel, a distribution port communicating with the main distribution channel is formed on a side wall of the valve element, and when the valve element rotates to the main opening angle, the distribution port communicates with the distribution channel, so that air is supplied to the air outlet channel through the main distribution channel.

According to some embodiments of the present invention, the air distribution port is an arc opening, and the valve core can be further rotated in the opening direction after the air distribution port is communicated with the air distribution channel, so as to adjust the position of the control member, control the air output, and thus achieve the adjustment of the fire power.

According to some embodiments of the invention, the gas distribution port is in the coverage angle range of the arc-shaped channel, and the main gas distribution channel can be conducted through the gas distribution port in the opening angle range of the annular channel, so that the gas supply function of the main fire is realized.

According to some embodiments of the invention, the gas distribution port takes the axis of the valve core as a rotation center, so that the gas distribution port cannot generate high-low position deviation when the valve core rotates, and stable gas delivery is maintained.

According to some embodiments of the invention, the annular channel takes the axis of the valve core as a rotation center, so that the annular channel cannot generate high-low position deviation when the valve core rotates, and stable gas delivery is maintained.

According to some embodiments of the invention, the arc-shaped channel takes the axis of the valve core as a rotation center, so that the arc-shaped channel cannot generate high-low position deviation when the valve core rotates, and stable gas delivery is maintained.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 3 is a schematic diagram of the connections of the drive rod, valve cartridge and control of an embodiment of the present invention;

FIG. 4 is an exploded view of the drive rod, valve cartridge and control of an embodiment of the present invention;

FIG. 5 is a schematic view of a valve cartridge according to an embodiment of the present invention;

FIG. 6 is a second schematic structural view of a valve cartridge according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a valve cartridge according to an embodiment of the invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not 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, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, 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 otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in fig. 1 and fig. 2, a coaxial gas control valve comprises a valve body 100 and a valve core 200 disposed in the valve body 100, the valve body 100 has a gas inlet passage 101, a gas outlet passage 102 and an ever-burning fire gas outlet passage 103, a driving rod 104 is rotatably disposed on the valve body 100, the valve core 200 can be driven by the driving rod 104 to rotate and control the communication state of the gas inlet passage 101, the gas outlet passage 102 and the ever-burning fire gas outlet passage 103, a control member 105 capable of controlling the gas outlet amount of the gas outlet passage 102 is disposed in the valve body 100, the driving rod 104, the valve core 200 and the control member 105 are coaxially disposed, the driving rod 104 can drive the control member 105 to move through the valve core 200 when the driving rod 104 rotates, the gas outlet amount of the gas outlet passage 102 can be controlled when the control member 105 moves, so as to realize fire adjustment, and because the driving rod 104, need not to dispose gear drive in addition, the mechanism is more simple reasonable, and can also reduce the horizontal width of gas control valve, facilitates the installation and uses.

According to some embodiments of the present invention, as shown in fig. 2, the valve body 100 is further configured with an electromagnetic valve 300 for controlling the opening and closing of the air inlet channel 101, the valve body 100 is slidably provided with a push rod 106 corresponding to the electromagnetic valve 300, a pushing structure is provided between the driving rod 104 and the push rod 106, and when the driving rod 104 pushes inward, the push rod 106 can be driven to push against the electromagnetic valve 300 to open the air inlet channel 101, so that the air enters the valve body 100.

In the specific implementation process, the electromagnetic valve 300 is a safety valve, when the main fire is ignited, the driving rod 104 does not push the ejector rod 106 any more, the electromagnetic valve 300 is controlled by a flameout control device, during normal combustion, the electromagnetic valve 300 keeps an open state, and when flameout occurs, the flameout control device controls the electromagnetic valve 300 to close and close the air inlet channel, so that the flameout protection function is realized.

According to some embodiments of the present invention, as shown in fig. 2, the pushing structure is a pushing piece 116 fixed on the driving rod 104, the pushing piece 116 corresponds to the push rod 106 to push it to move downwards, and the push rod 106 is provided with a return spring 126 capable of automatically returning when it is not pushed.

According to some embodiments of the present invention, as shown in fig. 3 and 4, a connection groove 201 is disposed at an upper portion of the valve core 200, and a lower end of the driving rod 104 is inserted into the connection groove 201, so that the driving rod 104 can drive the valve core 200 to rotate, and the driving rod 104 can move axially relative to the valve core 200, so as to realize transmission between the driving rod 104 and the valve core 200, and do not affect axial movement of the driving rod 104.

According to some embodiments of the present invention, as shown in fig. 2, a valve port 107 is disposed in the valve body 100, the control element 105 is a plate-shaped structure corresponding to the valve port 107, the control element 105 is disposed below the valve port 107 and can move up and down, and the control element 105 can control the opening degree of the valve port 107 when moving up and down, so as to control the gas output of the gas output channel 102.

Of course, in the implementation, the control member 105 may also be a plunger structure or the rotatable valve plate, which can also achieve the function of controlling the air output, and will not be described in detail herein.

According to some embodiments of the present invention, as shown in fig. 2, 3, and 4, the control member 105 is disposed on a valve rod 108, a connection hole 202 slidably engaged with an upper end of the valve rod 108 is disposed at a lower end of a valve core 200, the valve core 200 can drive the valve rod 108 to rotate and the valve rod 108 can move relative to the valve core 200, a threaded hole 109 with a downward opening is disposed at a lower end of the valve rod 108, the valve body 100 is provided with a stud 110 engaged with the threaded hole 109, when the valve core 200 rotates, the valve rod 108 can be driven to rotate, and the valve rod 108 can move up and down through threaded engagement, thereby achieving a function of adjusting an amount of.

Of course, in the implementation, the upper end of the stem 108 may be threadedly engaged with the valve cartridge 200, the lower end of the stem 108 may be slidably engaged with the valve body 100 and may limit the rotation, and the stem 108 and the control member 105 may be driven to move up and down by the threaded engagement when the valve cartridge 200 rotates, which will not be described in detail herein.

According to some embodiments of the present invention, as shown in fig. 1 and fig. 2, the valve body 100 is configured with a thermal expansion valve, the thermal expansion valve includes a bulb 400, the bulb 400 can drive the control member 105 to close the valve port 107 when being heated, the stud 110 is disposed on the thermal expansion valve and can be driven by the thermal expansion valve, so as to implement the function of driving the control member 105 to close the valve port 107, and the bulb 400 can be disposed on a heated object in an actual application process, thereby preventing dry burning or over-high temperature, and improving safety of use.

According to some embodiments of the present invention, as shown in fig. 2, a gas distribution channel 111 and a valve core cavity for installing the valve core 200 are disposed in the valve body 100, the valve core 200 is a revolving body, the valve core 200 is rotatably disposed in the valve core cavity, the gas distribution channel 111 is connected to the valve core cavity and the gas inlet channel 101, the open flame gas outlet channel 103 is connected to the valve core cavity, the lower part of the valve core cavity is open and connected to the gas outlet channel 102, the valve core 200 is rotatably matched with the valve core cavity, and the valve core 200 is disposed with an open flame gas distribution channel 203 and a main gas distribution channel 204, the valve core 200 has a main opening angle and an open flame opening angle, when the valve core 200 rotates to the open flame opening angle, the open flame gas distribution channel 203 communicates the gas distribution channel 111 with the open flame gas outlet channel 103, at the time, the open flame can be ignited by the ignition switch, the valve core 200 rotates from the open flame opening angle to the main opening angle, the open flame distribution channel 203 keeps communicating the open flame gas, when the pilot fire is continuously ignited and the valve core 200 rotates to the main opening angle, the main gas distribution channel 204 is communicated with the gas distribution channel 111 and the gas outlet channel 102, and meanwhile, the control part 105 moves to the position for opening the gas outlet channel 102, so that the pilot fire is ignited, and the gas control function of the gas valve is realized.

According to some embodiments of the present invention, as shown in fig. 5 and 6, the open flame gas distribution channel 203 includes an annular channel 205 annularly disposed on the valve element 200 and an arc-shaped channel 206 circumferentially disposed on the valve element 200, the annular channel 205 communicates with the open flame gas outlet channel 103 and maintains communication with the arc-shaped channel 206 during rotation of the valve element 200, the arc-shaped channel 206 communicates with the gas distribution channel 111 during rotation of the valve element 200 from the open angle of the open flame to the main open angle, and the annular channel 205 communicates with the arc-shaped channel 206 through a connecting channel 207, so as to maintain gas supply to the open flame gas outlet channel 103 during rotation of the open angle of the open flame to the main open angle.

According to some embodiments of the present invention, as shown in fig. 5 and 6, the arc-shaped channel 206 is juxtaposed to the air distribution channel 111 and is substantially perpendicular to the axis of the valve core 200, so that the up-down position deviation does not occur during the rotation of the valve core 200, and the communication performance is ensured.

According to some embodiments of the present invention, as shown in fig. 5, 6, and 7, the main gas distribution channel 204 is communicated to the bottom of the valve core 200 and communicated with the gas outlet channel 102, a gas distribution port 208 communicated to the main gas distribution channel 204 is opened on the side wall of the valve core 200, when the valve core 200 rotates to the main opening angle, the gas distribution port 208 is communicated with the gas distribution channel 111, so as to supply gas to the gas outlet channel 102 through the main gas distribution channel 204, and the gas outlet channel 102 realizes flow control through the control element.

According to some embodiments of the present invention, as shown in fig. 5 and 6, the gas distribution port 208 is an arc-shaped opening, and the valve element 200 can be further rotated in the opening direction after the gas distribution port 208 is communicated with the gas distribution channel 111, so as to adjust the position of the control member 105, control the gas output, and achieve the adjustment of the fire power.

According to some embodiments of the present invention, as shown in fig. 5 and 6, the distribution port 208 is in the coverage angle range of the arc-shaped channel 206, and the main distribution channel 204 can be communicated through the distribution port 208 in the opening angle range of the annular channel 205, so as to realize the main fire air supply function.

According to some embodiments of the present invention, as shown in fig. 5, 6, and 7, the gas distribution port 208 is centered on the axis of the valve core 200, so that the gas distribution port 208 does not shift in the high-low position when the valve core 200 rotates, and the alignment is maintained, thereby maintaining the stable gas delivery.

According to some embodiments of the present invention, as shown in fig. 5, 6, and 7, the annular channel 206 is centered on the axis of the valve core 200, so that the annular channel 206 does not shift in the high-low position when the valve core 100 rotates, and stable gas delivery is maintained.

According to some embodiments of the present invention, as shown in fig. 5, 6, and 7, the arc-shaped channel 206 is centered on the axis of the valve core 200, so that the arc-shaped channel 206 does not shift in the high-low position when the valve core 200 rotates, and stable gas delivery is maintained.

It is readily understood by those skilled in the art that the above-described preferred modes can be freely combined and superimposed without conflict.

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 within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A coaxial gas control valve comprises a valve body (100) and a valve core (200) arranged in the valve body (100), the valve body (100) is internally provided with an air inlet channel (101), an air outlet channel (102) and an ever-burning flame air outlet channel (103), it is characterized in that a driving rod (104) is rotatably arranged on the valve body (100), the valve core (200) can be driven by the driving rod (104) to rotate and control the communication state of the air inlet channel (101), the air outlet channel (102) and the ever-burning fire air outlet channel (103), a control part (105) which can control the air outlet quantity of the air outlet channel (102) is arranged in the valve body (100), the driving rod (104), the valve core (200) and the control part (105) are coaxially arranged, and the driving rod (104) can drive the control part (105) to move through the valve core (200) when rotating, the control part (105) can control the air outlet quantity of the air outlet channel (102) when moving.

2. The coaxial gas control valve according to claim 1,

the air inlet valve is characterized in that the valve body (100) is further provided with an electromagnetic valve (300) used for controlling the opening and closing of the air inlet channel (101), a push rod (106) corresponding to the electromagnetic valve (300) is arranged on the valve body (100) in a sliding mode, a pushing structure is arranged between the driving rod (104) and the push rod (106), and the driving rod (104) can drive the push rod (106) to push the electromagnetic valve (300) to open the air inlet channel (101) when pushing inwards.

3. The coaxial gas control valve according to claim 1 or 2,

the upper portion of the valve core (200) is provided with a connecting groove (201), the lower end of the driving rod (104) is inserted into the connecting groove (201), so that the driving rod (104) can drive the valve core (200) to rotate, and the driving rod (104) can axially move relative to the valve core (200).

4. The coaxial gas control valve according to claim 1 or 2,

the valve comprises a valve body (100), a valve port (107) is arranged in the valve body (100), a control element (105) is of a sheet structure corresponding to the valve port (107), the control element (105) is arranged below the valve port (107) and can move up and down, and the control element (105) can control the opening degree of the valve port (107) when moving up and down.

5. The coaxial gas control valve according to claim 4,

the control piece (105) is arranged on a valve rod (108), a connecting hole (202) in sliding fit with the upper end of the valve rod (108) is formed in the lower end of the valve core (200), the valve core (200) can drive the valve rod (108) to rotate, the valve rod (108) can move relative to the valve core (200), a threaded hole (109) with a downward opening is formed in the lower end of the valve rod (108), and a stud (110) matched with the threaded hole (109) is formed in the valve body (100).

6. The coaxial gas control valve according to claim 5,

the valve body (100) is provided with a thermostatic expansion valve, the thermostatic expansion valve comprises a temperature sensing bulb (400), and the temperature sensing bulb (400) can drive the control element (105) to close the valve port (107) when being heated.

7. The coaxial gas control valve according to claim 1,

a gas distribution channel (111) and a valve core cavity for installing the valve core (200) are arranged in the valve body (100), the gas distribution channel (111) is respectively communicated with the valve core cavity and the gas inlet channel (101), the ever-burning flame outlet channel (103) is communicated with the valve core cavity, the lower part of the valve core cavity is opened and communicated to the air outlet channel (102), the valve core (200) is in running fit with the valve core cavity, and the valve core (200) is provided with an open flame gas distribution channel (203) and a main gas distribution channel (204), the valve core (200) is provided with a main opening angle and an open fire opening angle, when the valve core (200) rotates to the main opening angle from the open fire opening angle, the open flame gas distribution channel (203) is communicated with the gas distribution channel (111) and the open flame gas outlet channel (103), when the valve core (200) rotates to the main opening angle, the main air distribution channel (204) is communicated with the air distribution channel (111) and the air outlet channel (102).

8. The coaxial gas control valve according to claim 7,

the open flame gas distribution channel (203) comprises an annular channel (205) annularly arranged on the valve core (200) and an arc-shaped channel (206) arranged on the circumference of the valve core (200), the annular channel (205) is communicated with the open flame gas outlet channel (103), the arc-shaped channel (206) is communicated with the gas distribution channel (111) in the process that the valve core (200) rotates from the open angle of the open flame to the main open angle, and the annular channel (205) is communicated with the arc-shaped channel (206) through a connecting channel (207).

9. The coaxial gas control valve according to claim 7,

the main gas distribution channel (204) is communicated to the bottom of the valve core (200) and communicated with the gas outlet channel (102), a gas distribution port (208) communicated to the main gas distribution channel (204) is formed in the side wall of the valve core (200), and when the valve core (200) rotates to a main opening angle, the gas distribution port (208) is communicated with the gas distribution channel (111).

10. The coaxial gas control valve according to claim 8,

the air distribution port (208) is an arc-shaped opening.

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