CN211649155U

CN211649155U - Easy-to-machine gas valve capable of realizing long-time open fire function

Info

Publication number: CN211649155U
Application number: CN201921663881.XU
Authority: CN
Inventors: 李雪波
Original assignee: Ningbo Laite Gas Stoves Co ltd
Current assignee: Ningbo Laite Gas Stoves Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-10-09
Anticipated expiration: 2029-09-30

Abstract

A gas valve which is easy to process and can realize the function of long open fire comprises a valve body and a valve core, wherein the valve core is provided with a ventilation cavity and a fire hole; the method is characterized in that: the valve body comprises a left valve shell and a right valve shell, and the upper end of the left valve shell is provided with a valve cover; an air inlet channel, a first transition air channel and an ever-burning fire air outlet channel are arranged in the right valve shell; a valve core cavity, an air outlet channel, a second transition air channel, a first long open fire auxiliary air channel and a second long open fire auxiliary air channel are arranged in the left valve shell; the valve core is arranged in the valve core cavity, and the peripheral wall of the valve core is provided with a long open fire rampart groove and a long open fire auxiliary rampart groove; a knob rod is arranged on the valve cover in a penetrating way; a valve plate is also arranged in the left valve shell, and the valve plate can be driven to move by the rotation of the valve core; the rotation of the valve core can determine whether the second transition air passage is communicated with the fire hole or not, whether the second transition air passage is communicated with the first pilot flame auxiliary air passage through the pilot flame barrier groove or not, and whether the second pilot flame auxiliary air passage is communicated with the pilot flame auxiliary barrier groove or not. Has the advantages of more reasonable and simple structural design and easy processing.

Description

Easy-to-machine gas valve capable of realizing long-time open fire function

Technical Field

The utility model relates to a gas valve especially relates to a temperature-sensing valve that has long naked light function that is fit for being used for gas oven.

Background

Some gas oven inside have two baking chamber that the interval set up from top to bottom, are equipped with a fire row in every baking chamber respectively, and the lower fire row that is located lower part baking chamber generally has the fire control possibility, and the fire row fire intensity of the last fire that is located upper portion baking chamber is certain, generally for big fire. Because of the fire row is sheltered from completely by the box of oven down, it is then visible to go up the fire row, consequently when setting a fire for down row ignition, can't observe with eyes whether to ignite successfully, if it is unsuccessful to ignite many times, because of there is the gas release in the ignition process, when the ignition is successful next time, can be because the gas content of fire row surrounding air is great down, can have the plosives of "popping at first" when igniting, there is certain potential safety hazard, some countries are out of the throne national standard, can not have the aforesaid condition to take place. How to design a gas valve which ensures the efficiency of fire grate ignition is a technical problem which needs to be solved urgently by the technical personnel in the field. For this reason, the applicant applied for a chinese patent application, namely "gas valve for electrical and gas", with application number CN201810984517.7 (publication number CN109058518A) shortly before. A clutch structure is required to be arranged between a knob rod and a valve core of the gas valve, a driving gear which can rotate along with the knob rod is sleeved on the knob rod, the knob rod can slide up and down relative to the driving gear, only one section of driving arc-shaped tooth part is arranged on the driving gear, and the other section of driving gear is a toothless arc-shaped surface; the valve core is sleeved with a driven gear which can rotate along with the valve core, the driven gear only has one section of driven arc-shaped tooth part, and the other section of the driven gear is a toothless arc-shaped surface; the driving gear and the driven gear form a clutch structure. The setting of separation and reunion structure directly leads to the cost of valve to be high, and separation and reunion gear structure requires high to product precision and assembly, lacks the competitiveness.

The existing gas valve with the function of long open fire mainly adopts an integrated structure for the main body part, and the internal gas passage of the gas valve with the function of long open fire is auxiliary, a plurality of process holes are formed in the process, and the end parts of the process holes need to be blocked by steel balls, so that the valve body structure has the defects of multiple processing procedures, complex process, multiple parts, inconvenience in assembly and high cost. It is therefore desirable to optimize the valve body structure of such a gas valve that can achieve a long open flame function.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a gas valve that structural design is more reasonable and simple workable and can realize long naked light function is provided to above-mentioned prior art current situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a gas valve which is easy to process and can realize a long-time naked flame function comprises a valve body and a valve core, wherein the lower part of the valve core is provided with a vent cavity with a downward opening, and the side wall of the vent cavity is provided with a flame hole; the method is characterized in that: the valve body comprises a left valve shell and a right valve shell which are fixed together, and a valve cover is arranged at the upper end of the left valve shell; an air inlet channel, a first transition air channel and an ever-burning fire air outlet channel are arranged in the right valve shell; the left valve shell is internally provided with a valve core cavity, an air outlet channel, a second transition air passage, a first long open fire auxiliary air passage and a second long open fire auxiliary air passage, the first transition air passage is communicated with the second transition air passage, the first transition air passage is communicated with the air inlet channel, and the long open fire air outlet channel is communicated with the first long open fire auxiliary air passage and the second long open fire auxiliary air passage; the valve core is arranged in the valve core cavity, and the peripheral wall of the valve core is provided with a long open fire barrier groove and a long open fire auxiliary barrier groove, wherein the long open fire barrier groove is blocked with the vent cavity, and two ends of the long open fire auxiliary barrier groove are communicated with the vent cavity through an inner cutting groove with a downward opening on the side wall of the valve core; a knob rod for driving the valve core to rotate penetrates through the valve cover, and the knob rod keeps moving upwards; a valve plate for controlling the air outlet quantity of the air outlet channel is further arranged in the left valve shell, the valve plate is positioned below the valve core, and the valve core can be driven to move by the rotation of the valve core; the rotation of the valve core can determine whether the second transition air passage is communicated with the fire hole or not, whether the second transition air passage is communicated with the first pilot flame auxiliary air passage through the pilot flame barrier groove or not, and whether the second pilot flame auxiliary air passage is communicated with the pilot flame auxiliary barrier groove or not can be further determined by the rotation of the valve core.

Further improve, be equipped with the sealing washer between above-mentioned left valve casing and the right valve casing and be in the same place through the screw fixation, it has the interior concave part of bar to open on the terminal surface that right valve casing and left valve casing contacted, the interior concave part of bar is run through to the long naked light air outlet channel, the interior concave part of bar simultaneously with the supplementary air flue of first long naked light and the supplementary air flue intercommunication of the long naked light of second. The setting of sealing washer prevents that the gas from revealing away from between left valve casing and the right valve casing, and the interior recess of bar does benefit to simultaneously and the supplementary air flue of the long open flame of first and second and the supplementary air flue intercommunication of the long open flame of interval setting from top to bottom.

As a specific preferred gas path control mode, when the knob rod and the valve core are in an original state, the fire hole is blocked from the second transition gas path, the first long open fire auxiliary gas path is blocked from the long open fire barrier groove, and the second long open fire auxiliary gas path is blocked from the long open fire auxiliary barrier groove; in the process that the knob rod rotates to a first angle from an original state, the valve core can be driven to rotate to a position where the second transition air passage is communicated with the first long open fire auxiliary air passage through the long open fire barrier groove, and meanwhile, the air inlet passage and the fire hole are in a blocking state; and in the process that the knob rod continues to rotate from the first angle state to the second angle state, the valve core is driven to rotate to the position where the second transition air passage and the long open fire barrier groove are blocked, meanwhile, the air inlet passage and the fire hole are in a communicated state, and the second long open fire auxiliary air passage and the long open fire auxiliary barrier groove are in a communicated state. The gas outlet channel is communicated with the second pilot flame auxiliary air channel through the pilot flame auxiliary barrier groove, so that the gas outlet channel of the pilot flame is ensured to be continuous, meanwhile, the gas inlet channel is communicated with the fire hole through the first transition air channel and the second transition air channel, and the main fire is ignited.

Preferably, the middle part of the air outlet channel is provided with a valve port, the valve port is positioned right below the valve core, the valve plate is constrained below the valve port and can move up and down, the opening degree of the valve port is increased by the downward movement of the valve plate, and the opening degree of the valve port is reduced by the upward movement of the valve plate; in the process of anticlockwise rotating of the valve core, the valve plate is driven to move downwards by the rotation of the valve core; in the process of clockwise rotation of the valve core, the valve plate is driven to move upwards by the rotation of the valve core. The valve plate is designed to be directly linked with the valve core by the structure, so that the valve plate is convenient to assemble and enables a product to be miniaturized.

As an improvement, an auxiliary air passage is arranged in the valve body, an air inlet of the auxiliary air passage is positioned above the valve port, an air outlet of the auxiliary air passage is positioned below the valve port, and when the valve plate is closed, the gas coming out of the fire hole can only be communicated with an outlet end of the air outlet passage through the auxiliary air passage. When the fire discharge temperature exceeds a set value, the valve plate can close the valve port, and the air flow passing through the air outlet channel can only flow out from the outlet end of the air outlet channel through the auxiliary air channel, so that the fire is kept in a minimum fire state.

Preferably, an adjusting fluid for adjusting the air output of the auxiliary air passage is vertically arranged in the auxiliary air passage in a penetrating manner. The setting of the adjusting flow can adjust the fire behavior of the minimum fire of the fire row.

The valve block is further improved, the valve block is fixed in the middle of an adjusting rod, the upper portion of the adjusting rod is inserted into an inner cutting groove in the lower end of a valve core, the valve core can move up and down relative to the adjusting rod, the valve core can rotate to drive the adjusting rod to rotate, a threaded hole with a downward opening is formed in the bottom of the adjusting rod, a threaded column is fixed at the bottom in the valve body, and the threaded column is located below the adjusting rod and is inserted into the threaded hole in a threaded mode. The inner cutting groove of the valve core is connected with the adjusting rod, so that the adjusting rod can be driven to rotate, the structure of the valve core is fully utilized, the structure is simplified, the valve block is driven to move by the aid of the principle of thread transmission because the adjusting rod is in rotating operation, the valve block is driven to move up and down by the aid of rotation of the adjusting rod, and the design is more reasonable.

For making the temperature-sensing valve have automatic control by temperature change regulatory function, as preferred, above-mentioned valve body bottom is worn to establish and is fixed with power component, the screw thread post sets up on this power component, and power component can reciprocate through expend with heat and contract with cold, the below of valve block is equipped with auxiliary spring. Power component passes through heat-conducting component and is connected with the temperature sensing stick, there is temperature sensing oil inside the power component, through expend with heat and contract with cold and drive reciprocating of power component, reach the uniform temperature when the hot row temperature, the temperature sensing stick conducts the heat for temperature sensing oil through heat-conducting component, power component reciprocates under the promotion of temperature sensing oil, finally realize the regulation to the valve block upper and lower position, the air output of the first air outlet channel of control, because of power component the range that moves up under the expend with heat is not very big, still can not let the valve block effectively plug up the valve port, and under auxiliary spring's effect, guarantee that the valve block effectively plugs up the valve port.

In order to ensure that the temperature control valve is safer to operate, a safety electromagnetic valve is arranged in the valve body, the safety electromagnetic valve and the valve core are arranged at intervals and are positioned in the air inlet channel, an ejector rod penetrates through the valve body, the ejector rod can trigger the safety electromagnetic valve when moving downwards, a spring enabling the ejector rod to keep moving upwards is sleeved on the ejector rod, an energy driving plate is sleeved on the knob rod, the driving plate can move axially along with the knob rod, and the knob rod can rotate around the axis of the driving plate relative to the driving plate. Only if the knob rod presses down the safety electromagnetic valve, the air source main switch can be opened, if the knob rod is not pressed down in place, the safety electromagnetic valve is not triggered, and no fuel gas flows out even if the valve core rotates.

Compared with the prior art, the utility model has the advantages of: the valve body adopts a split structure and is divided into a left valve shell and a right valve shell, the air passage can be directly formed in a die in a drawing mode without drilling, and the air passage is formed by plugging steel balls, so that the gas valve is simpler in structure, less in machining procedures, simple in process, less in parts, convenient to assemble and low in cost. In addition, through the special design of the valve core, namely, the peripheral wall of the valve core is provided with a long open fire barrier groove and a long open fire auxiliary barrier groove, the long open fire barrier groove is blocked with the vent cavity, two ends of the long open fire auxiliary barrier groove are communicated with the vent cavity through an inner cutting groove with a downward opening on the side wall of the valve core and then are combined, and a first long open fire auxiliary air passage and a second long open fire auxiliary air passage which are communicated with the vent channel of the long open fire are arranged in the valve body; the rotation of the valve core can determine whether the second transition air passage is communicated with the fire hole or not, whether the second transition air passage is communicated with the first pilot flame auxiliary air passage through the pilot flame barrier groove or not, and whether the second pilot flame auxiliary air passage is communicated with the pilot flame auxiliary barrier groove or not can be further determined by the rotation of the valve core. Therefore, the valve plate can be arranged below the valve core, the valve plate can be driven to move by the rotation energy of the valve core, the ignition of the pilot flame is realized by the communication of the pilot flame barrier groove and the first pilot flame auxiliary air passage or the communication of the pilot flame barrier groove and the second pilot flame auxiliary air passage, a gear clutch structure is not required to be additionally arranged, the structure is simplified, and the cost is greatly reduced.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a schematic perspective view of an embodiment of the present invention;

fig. 3 is a cross-sectional view of an embodiment of the present invention;

FIG. 4 is a sectional view of the valve according to the embodiment of the present invention along the central axis of the two auxiliary gas passages;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

FIG. 6 is a sectional view taken along line B-B of FIG. 4;

fig. 7 is a schematic perspective view of a valve element in a valve according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of a valve element in a valve according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of a right valve housing in the valve according to an embodiment of the present invention;

fig. 10 is a schematic perspective view of a left valve housing in the valve according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 10, it is a preferred embodiment of the present invention.

A gas valve which is easy to process and can realize a long-time naked flame function comprises a valve body 1 and a valve core 2, wherein the lower part of the valve core 2 is provided with a vent cavity 21 with a downward opening, and the side wall of the vent cavity 21 is provided with a flame hole 24;

the valve body 1 comprises a left valve shell 11 and a right valve shell 12 which are fixed together, and a valve cover 13 is arranged at the upper end of the left valve shell 11; an air inlet channel 1a, a first transition air channel 1d1 and an ever-burning fire air outlet channel 1c are arranged in the right valve shell; the left valve shell is internally provided with a valve core cavity, an air outlet channel 1b, a second transition air channel 1d2, a first long open flame auxiliary air channel 1c1 and a second long open flame auxiliary air channel 1c2, the first transition air channel 1d1 is communicated with the second transition air channel 1d2, the first transition air channel 1d1 is communicated with the air inlet channel 1a, and the long open flame air outlet channel 1c is communicated with the first long open flame auxiliary air channel 1c1 and the second long open flame auxiliary air channel 1c 2; the valve core 2 is arranged in the valve core cavity, the peripheral wall of the valve core 2 is provided with a long open flame barrier groove 22 and a long open flame auxiliary barrier groove 23, wherein the long open flame barrier groove 22 is blocked with the vent cavity 21, and two ends of the long open flame auxiliary barrier groove 23 are communicated with the vent cavity 21 through an inner cutting groove 231 with a downward opening on the side wall of the valve core 2; a knob rod 3 for driving the valve core 2 to rotate is arranged on the valve cover 13 in a penetrating mode, and the knob rod 3 is supported by a spring to keep moving upwards; a valve plate 4 for controlling the air output of the air outlet channel 1b is also arranged in the left valve shell 11, the valve plate 4 is positioned below the valve core 2, and the valve core 2 can drive the valve plate 4 to move by rotation; the rotation of the valve body 2 can determine whether the second transition gas passage 1d2 is communicated with the fire hole 24, whether the second transition gas passage 1d2 is communicated with the first pilot flame auxiliary gas passage 1c1 through the pilot flame barrier groove 22, and whether the second pilot flame auxiliary gas passage 1c2 is communicated with the pilot flame auxiliary barrier groove 23.

Be equipped with sealing washer 14 between left valve casing 11 and the right valve casing 12 and be in the same place through screw 15 is fixed, it has interior recess 121 of bar to open on the terminal surface that right valve casing 12 and left valve casing 11 contact, and interior recess 121 of bar is run through to long open flame outlet channel 1c, and interior recess 121 of bar communicates with first long open flame auxiliary air way 1c1 and second long open flame auxiliary air way 1c2 simultaneously.

When the knob lever 3 and the valve body 2 are in the original state, the fire hole 24 is blocked from the intake passage 1a, the first open flame auxiliary air passage 1c1 is blocked from the open flame barrier groove 22, and the second open flame auxiliary air passage 1c2 is blocked from the open flame auxiliary barrier groove 23.

In the process that the knob rod 3 rotates to a first angle from the original state, the valve core 2 can be driven to rotate to the position that the air inlet channel 1a is communicated with the first long open flame auxiliary air channel 1c1 through the long open flame barrier groove 22, and meanwhile, the second transition air channel 1d2 and the fire hole 24 are in a blocking state;

in the process that the knob stem 3 continues to rotate from the first angle state to the second angle state, the valve core 2 is driven to rotate to the position where the second transition air passage 1d2 and the first long open fire auxiliary air passage 1c1 are blocked, the air inlet passage 1a is communicated with the fire hole 24 through the first transition air passage 1d1 and the second transition air passage 1d2, and meanwhile, the second long open fire auxiliary air passage 1c2 is communicated with the long open fire auxiliary barrier groove 23.

In the process that the knob rod 3 rotates anticlockwise from the first angle to the second angle, the valve plate 4 is driven to move towards the direction of increasing the air output of the air outlet channel 1 b.

The middle part of the air outlet channel 1b is provided with a valve port 10, the valve port 10 is positioned right below the valve core 2, the valve plate 4 is restrained below the valve port 10 and can move up and down, the opening degree of the valve port 10 is increased by downward movement of the valve plate 4, and the opening degree of the valve port 10 is reduced by upward movement of the valve plate 4; in the process of anticlockwise rotating of the valve core 2, the valve plate 4 is driven to move downwards by the rotation of the valve core 2; in the process of clockwise rotation of the valve core 2, the valve plate 4 is driven to move upwards by the rotation of the valve core 2.

An auxiliary air passage 1e is arranged in the valve body 1, an air inlet 1e1 of the auxiliary air passage 1e is positioned above the valve port 10, an air outlet 1e2 of the auxiliary air passage 1d is positioned below the valve port 10, and under the state that the valve plate 4 closes the valve port 10, the fuel gas coming out of the fire hole 24 can only be communicated with the outlet end of the air outlet channel 1b through the auxiliary air passage 1 e.

An adjusting fluid 16 for adjusting the air output of the auxiliary air passage 1e vertically penetrates through the auxiliary air passage 1 e. Of course, the regulator 16 may not be provided.

The valve plate 4 is fixed in the middle of an adjusting rod 7, the upper part of the adjusting rod 7 is inserted into an inner cutting groove at the lower end of the valve core 2, the valve core can move up and down relative to the adjusting rod 7, the valve core can rotate to drive the adjusting rod 7 to rotate, a threaded hole 71 with a downward opening is formed in the bottom of the adjusting rod 7, a threaded column 61 is fixed at the bottom in the valve body 1, and the threaded column 61 is located below the adjusting rod 7 and is inserted into the threaded hole 71 to be connected with the threaded hole.

The bottom of the valve body 1 is fixedly provided with a power component 6 in a penetrating way, the threaded column 61 is arranged on the power component 6, the power component 6 can move up and down through expansion with heat and contraction with cold, and the structure inside the power component 10 is not shown in the drawing. An auxiliary spring 62 is arranged below the valve plate 4. This power part 6's drive structure is connected with temperature sensing stick 63, power part 6's built-in cavity has temperature sensing oil, power part 6 can reciprocate according to the expend with heat and contract with cold production of inside temperature sensing oil, when the hot row temperature reaches the uniform temperature, the heat of temperature sensing stick 63 conducts for temperature sensing oil through the heat-conducting component, power part 6 reciprocates (is heated, the inflation, power part 6 moves up, meet cold, the shrink, power part 6 moves down) under the promotion of temperature sensing oil, finally realize the regulation to valve block 4 upper and lower position, control outlet channel 1 b's the gas output. If the power part 6 moves upwards to push the valve plate 4 to move upwards, and the valve port 10 is closed under the action of the auxiliary spring 62, the gas from the fire hole 24 can only be communicated with the outlet end of the gas outlet channel 1b through the auxiliary gas channel 1e, and is at the minimum fire position.

The safety electromagnetic valve 8 is arranged in the valve body 1, the safety electromagnetic valve 8 and the valve core 2 are arranged at intervals and are located in the air inlet channel 1a, the valve body 1 is provided with the ejector rod 9 in a penetrating mode, the ejector rod 9 can trigger the safety electromagnetic valve 8 when moving downwards, the ejector rod 9 is sleeved with a spring 91 enabling the ejector rod 9 to keep moving upwards, the knob rod 3 is sleeved with the driving plate 92, and the driving plate 92 can move longitudinally along with the knob rod 3, but the knob rod 3 can rotate around the axis of the driving plate 92 relative to the driving plate 92.

The working principle and the process of the gas valve are as follows:

when the knob rod 3 is pressed down, the driving plate 92 moves down along with the knob rod 3, so that the top rod 9 overcomes the elasticity of the spring 91 to move down to trigger the safety electromagnetic valve 8, and the air source main switch is opened.

In the process of rotating the knob lever 3 counterclockwise to a first angle, the valve core 2 is driven to rotate to the air inlet channel 1a, the air inlet channel 1a is communicated with the first pilot flame auxiliary air channel 1c1 through the first transition air channel 1d1 and the second transition air channel 1d2 and the long pilot flame barrier groove 22, and meanwhile, the air inlet channel 1a is blocked from the flame hole 24; the fuel gas sequentially passes through the air inlet channel 1a, the first transition air channel 1d1, the long open fire barrier groove 22 and the first long open fire auxiliary air channel 1c1 and then is discharged through the long open fire outlet channel 1d, and the fire hole 24 is still blocked with the second transition air channel 1d2, so that the air outlet channel 1b is ensured to be in a gas cut-off state; the ignition switch is not triggered at this time.

When the knob rod 3 is in the first angle position state, the knob rod 3 can be further moved downwards in the position state to finish ignition, and the long-term open fire is ignited.

In the process that the knob rod 3 rotates anticlockwise from the first angle to the second angle, the valve core 2 is driven to rotate to the second transition air passage 1d2 to be blocked with the long open fire barrier groove 22, the air inlet passage 1a is communicated with the fire hole 24 through the first transition air passage 1d1 and the second transition air passage 1d2, and meanwhile, the second long open fire auxiliary air passage 1c2 is communicated with the long open fire auxiliary barrier groove 23. The fuel gas is divided into two paths, one path of the fuel gas passes through the air inlet channel 1a, the ventilation cavity 21, the auxiliary barrier groove 23 for the long open fire, the first transition air passage 1d1, the second transition air passage 1d2 and the auxiliary air passage 1c2 for the long open fire and then is discharged through the air outlet channel 1d for the long open fire, and the long open fire is still ignited; the other path of gas passes through the gas inlet channel 1a, the ventilation cavity 21, the first transition gas channel 1d1, the second transition gas channel 1d2, the fire hole 24 and the valve port 10 in sequence and then is discharged through the gas outlet channel 1b, and the gas outlet channel 1b can be communicated with a fire outlet in a gas oven.

Claims

1. A gas valve which is easy to process and can realize a long-time open fire function comprises a valve body (1) and a valve core (2), wherein the lower part of the valve core (2) is provided with a vent cavity (21) with a downward opening, and the side wall of the vent cavity (21) is provided with a fire hole (24); the method is characterized in that: the valve body (1) comprises a left valve casing (11) and a right valve casing (12) which are fixed together, and a valve cover (13) is installed at the upper end of the left valve casing (11); an air inlet channel (1a), a first transition air channel (1d1) and an open flame air outlet channel (1c) are arranged in the right valve shell (12); the left valve shell is internally provided with a valve core cavity, an air outlet channel (1b), a second transition air channel (1d2), a first long open flame auxiliary air channel (1c1) and a second long open flame auxiliary air channel (1c2), the first transition air channel (1d1) is communicated with the second transition air channel (1d2), the first transition air channel (1d1) is communicated with the air inlet channel (1a), and the long open flame air outlet channel (1c) is communicated with the first long open flame auxiliary air channel (1c1) and the second long open flame auxiliary air channel (1c 2); the valve core (2) is arranged in a valve core cavity, a long open flame barrier groove (22) and a long open flame auxiliary barrier groove (23) are formed in the peripheral wall of the valve core (2), the long open flame barrier groove (22) is blocked with the vent cavity (21), and two ends of the long open flame auxiliary barrier groove (23) are communicated with the vent cavity (21) through an inner cutting groove (231) with a downward opening in the side wall of the valve core (2); a knob rod (3) for driving the valve core (2) to rotate penetrates through the valve cover (13), and the knob rod (3) keeps moving upwards; a valve plate (4) for controlling the air outlet amount of the air outlet channel (1b) is further arranged in the left valve shell (11), the valve plate (4) is positioned below the valve core (2), and the valve core (2) can be driven to move by the rotation energy of the valve core (4); the rotation of the valve core (2) can determine whether the second transition air passage (1d2) is communicated with the fire hole (24) or not, whether the second transition air passage (1d2) is communicated with the first pilot flame auxiliary air passage (1c1) through the pilot flame barrier groove (22) or not, and the rotation of the valve core (2) can also determine whether the second pilot flame auxiliary air passage (1c2) is communicated with the pilot flame auxiliary barrier groove (23) or not.

2. The workable gas valve that can realize long open flame function of claim 1, characterized by: be equipped with between left valve casing (11) and right valve casing (12) sealing washer (14) and fixed together through screw (15), it has interior recess of bar (121) to open on the terminal surface that right valve casing (12) and left valve casing (11) contacted, interior recess of bar (121) is run through in long open flame outlet channel (1c), interior recess of bar (121) simultaneously with the supplementary air flue of first long open flame (1c1) and the supplementary air flue of the long open flame of second (1c2) intercommunication.

3. The workable gas valve that can realize long open flame function of claim 1, characterized by:

when the knob rod (3) and the valve core (2) are in the original state, the fire hole (24) is blocked with the second transition air passage (1d2), the first long open fire auxiliary air passage (1c1) is blocked with the long open fire barrier groove (22), and the second long open fire auxiliary air passage (1c2) is blocked with the long open fire auxiliary barrier groove (23);

in the process that the knob rod (3) rotates to a first angle from an original state, the valve core (2) can be driven to rotate to a position where the second transition air passage (1d2) is communicated with the first long open fire auxiliary air passage (1c1) through the long open fire barrier groove (22), and meanwhile, the second transition air passage (1d2) and the fire hole (24) are in a blocking state;

in the process that the knob rod (3) continues to rotate from the first angle state to the second angle state, the valve core (2) is driven to rotate to the position where the second transition air passage (1d2) and the long open fire barrier groove (22) are blocked, meanwhile, the second transition air passage (1d2) and the fire hole (24) are in a communicated state, and the second long open fire auxiliary air passage (1c2) and the long open fire auxiliary barrier groove (23) are in a communicated state.

4. The easy-to-machine gas valve capable of achieving a long open flame function according to claim 3, characterized in that: the knob rod (3) drives the valve plate (4) to move towards the direction of increasing the air output of the air outlet channel (1b) in the process of anticlockwise rotating from the first angle to the second angle.

5. The easy-to-machine gas valve capable of achieving a long open flame function according to claim 4, characterized in that: the middle part of the air outlet channel (1b) is provided with a valve port (10), the valve port (10) is positioned under the valve core (2), the valve plate (4) is restrained under the valve port (10) and can move up and down, the opening degree of the valve port (10) can be increased by downward movement of the valve plate (4), and the opening degree of the valve port (10) can be reduced by upward movement of the valve plate (4); in the process that the valve core (2) rotates anticlockwise, the valve plate (4) is driven to move downwards by the rotation of the valve core (2); in the process of clockwise rotation of the valve core (2), the valve plate (4) is driven to move upwards by the rotation of the valve core (2).

6. The easy-to-machine gas valve capable of achieving a long open flame function according to claim 5, characterized in that: the gas valve is characterized in that an auxiliary air passage (1e) is arranged in the valve body (1), an air inlet (1e1) of the auxiliary air passage (1e) is located above the valve port (10), an air outlet (1e2) of the auxiliary air passage (1e) is located below the valve port (10), and when the valve plate (4) is closed and the valve port (10) is closed, gas coming out of the fire hole (24) can only be communicated with an outlet end of the air outlet channel (1b) through the auxiliary air passage (1 e).

7. The workable gas valve that can realize long naked light function of claim 6, characterized by: an adjusting fluid (16) used for adjusting the air output of the auxiliary air passage (1e) vertically penetrates through the auxiliary air passage (1 e).

8. The workable gas valve that can realize long naked light function of claim 6, characterized by: valve block (4) are fixed in the middle part of an regulation pole (7), and the upper portion of adjusting pole (7) inserts in grooving (231) of case (2) lower extreme, and the case can adjust pole (7) and reciprocate relatively and the rotation of case (2) can drive the rotation of adjusting pole (7), and the bottom of adjusting pole (7) is opened and is had opening screw hole (71) down, bottom in valve body (1) is fixed with screw post (61), and screw post (61) are located the below of adjusting pole (7) and insert threaded connection in screw hole (71).

9. The workable gas valve capable of realizing long open flame function of claim 8, wherein: the valve body (1) bottom is worn to establish and is fixed with power unit (6), screw thread post (61) set up on this power unit (6), and power unit (6) can reciprocate through expend with heat and contract with cold, the below of valve block (4) is equipped with auxiliary spring (62).

10. The workable gas valve that can realize long open flame function of claim 1, characterized by: be equipped with in valve body (1) and be used for safety solenoid valve (8), safety solenoid valve (8) with case (2) interval sets up and is located inlet channel (1a), wear to be equipped with ejector pin (9) on valve body (1), the ability trigger that moves down of ejector pin (9) safety solenoid valve (8), the cover is equipped with spring (91) that makes ejector pin (9) keep moving up the trend on ejector pin (9), cover is established on knob pole (3) and can be driven plate (92), and drive plate (92) can be rotatory around self axis along with knob pole (3) axial displacement but knob pole (3) can be relative drive plate (92).