Premixed gas burner and aluminum melting furnace

Abstract

The present invention relates to the field of aluminum melting furnaces, and discloses a premixed gas burner, comprising a furnace body, a switching assembly, and two combustion assemblies respectively arranged on both sides of the furnace body, wherein the combustion assembly comprises a turbine, wherein a fixed pipe 1 is provided at the gas outlet end of the turbine, a fixed pipe 2 is coaxially provided at the end of the fixed pipe 1, a fixed pipe 3 is coaxially provided at the end of the fixed pipe 2, a fixed pipe 4 is provided at the end of the fixed pipe 3, a fixed pipe 4 is provided at the end of the fixed pipe 4, the end of the fixed pipe 4 extends into the furnace body and is hingedly provided with a flame nozzle, a spiral blade is provided in the fixed pipe 1, the end of the impeller shaft of the turbine extends into the fixed pipe 2 and is provided with turbine blades, a tapered tube is provided on the outside of the impeller shaft, an annular main pipe is provided on the outside of the fixed pipe 2, a gas nozzle is provided on the outer surface of the annular main pipe, and a gas valve is provided on the gas nozzle, a plurality of radial branch pipes are distributed in an array on the outer surface of the annular main pipe, the ends of the radial branch pipes extend into the fixed pipe 2 and are connected to the tapered tube.

Description

Technical Field

[0001] The present invention relates to the field of metal smelting, in particular to the field of aluminum melting furnaces, and in particular to a premixed gas burner and an aluminum melting furnace. Background Art

[0002] Aluminum melting furnaces are used in the aluminum smelting industry. Aluminum melting furnaces include crucible type and crucibleless type. The crucible type refers to heating from the side and bottom of the aluminum melting furnace, while the crucibleless type refers to using high-temperature flames to heat the aluminum charge directly inside the aluminum melting furnace.

[0003] The double heat storage high temperature air combustion technology is a heating technology used in existing crucible-free aluminum melting furnaces. Specifically, when the fuel is burning, the combustion air enters from port A, the high temperature flue gas is discharged from port B and the heat is accumulated in the heat storage body in the heat storage chamber B. After a preset time, the combustion air enters from port B after heat exchange in the heat storage chamber B, and the high temperature exhaust gas is discharged from port A and the heat is accumulated in the heat storage body in the heat storage chamber A. This reciprocating process recovers the heat in the high temperature exhaust gas, thereby achieving the purpose of waste heat recovery and energy saving. However, this method has some shortcomings: a. It recovers and accumulates the heat contained in the high temperature flue gas through the heat storage body, and uses the heat of the heat storage body to preheat the combustion air, thereby improving the combustion completeness of the fuel, and can achieve the waste heat utilization effect and achieve the purpose of energy saving. However, in terms of fuel During combustion, the combustion-supporting air is simply merged into the fuel gas, and there is a problem of uneven mixing between the two, which easily affects the subsequent combustion quality; b. As we all know, when a flame is burning, the flame is the area where the combustion reaction is most intense and the temperature is the highest. The root of the flame is mainly the preheating and decomposition area of ​​the fuel, providing continuous combustible gas for combustion, and the temperature is relatively lower. Therefore, when the flame is burning, the temperature on the flame side is higher than the temperature on the flame root side. Since the position of the burner is fixed in the existing technology, the trajectory of the ignited flame is predictable and approximately stationary. Therefore, the heat received by the aluminum material is not balanced, which not only affects the smelting efficiency, but also causes a part of the aluminum material to be excessively heated by the flame and produce high-temperature oxidation problems.

[0004] Based on the above, the present invention proposes a premixed gas burner and an aluminum melting furnace. Summary of the Invention

[0005] In order to solve the problems mentioned in the above background, the present invention provides a premixed gas burner and an aluminum melting furnace.

[0006] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows.

[0007] A premixed gas burner includes a furnace body, a switching assembly, and two combustion assemblies respectively arranged on either side of the furnace body. The combustion assembly includes a turbine. A horizontally arranged gas flow conduit is provided at the gas outlet end of the turbine. The gas flow conduit includes a fixed pipe 1 provided at the gas outlet end of the turbine. A fixed pipe 2 is coaxially provided at the end of the fixed pipe 1. A fixed pipe 3 is coaxially provided at the end of the fixed pipe 2. A fixed pipe 4 is provided at the end of the fixed pipe 3. The end of the fixed pipe 4 extends into the furnace body and is hingedly provided with a flame nozzle.

[0008] A spiral blade is provided in the fixed pipe 1, the end of the impeller shaft of the turbine extends into the fixed pipe 2 and is provided with turbine blades, a tapered pipe is provided on the outside of the impeller shaft, an annular main pipe is provided on the outside of the fixed pipe 2, a gas nozzle is provided on the outer surface of the annular main pipe and a gas valve is provided on the gas nozzle, a plurality of radial branch pipes are distributed in an array on the outer surface of the annular main pipe, the ends of the radial branch pipes extend into the fixed pipe 2 and are connected to the tapered pipe, and the end of the tapered pipe with a larger diameter faces the turbine blades.

[0009] Furthermore, the combustion assembly includes a heat storage chamber and a tee pipe, a heat storage body is provided in the heat storage chamber, and an upper pipe is provided on the upper surface of the heat storage chamber;

[0010] The tee pipe includes three interfaces, one interface is connected to the bottom of the regenerator through a lower pipe, one interface is connected to the furnace chamber through a high-temperature smoke pipe, one interface is provided with a second one-way valve, the end of the second one-way valve is provided with a control valve, the end of the control valve is connected to the air inlet end of the turbine, and a first one-way valve is provided at the connection between the high-temperature smoke pipe and the tee pipe;

[0011] One-way valve 1 is used to allow the gas in the high-temperature smoke pipe to flow into the three-way pipe in one direction, and one-way valve 2 is used to allow the gas in the three-way pipe to flow into the control valve in one direction.

[0012] Furthermore, a sensor for real-time monitoring of the gas concentration of the premixed gas is provided in the fixed pipe three, and an ignition needle is provided in the flame nozzle.

[0013] Furthermore, the combustion assembly also includes a driving component for driving the flame spray head to reciprocate and deflect around the hinge axis.

[0014] Furthermore, the outer circumferential surface of the flame nozzle is provided with lugs;

[0015] The driving component includes a push-pull rod, which can only move along the axis of the gas flow pipe. A connecting rod is hinged between the end of the push-pull rod extending into the furnace body and the lug. When the push-pull rod moves, the flame nozzle can be pulled to swing around the hinge axis through the connecting rod.

[0016] The driving component further includes a driving unit for driving the push-pull rod to move.

[0017] Furthermore, the driving unit includes a linear module, the linear module includes an electric telescopic rod, and the output end of the electric telescopic rod is connected to the push-pull rod.

[0018] Furthermore, the driving unit includes a rotating shaft, and both ends of the impeller shaft of the turbine extend out of the casing. The impeller shaft and the input end of the rotating shaft form a power connection. A turntable is coaxially arranged at the output end of the rotating shaft, and a convex pin is eccentrically provided on the end face of the turntable. A vertically arranged connecting hole is provided on the push-pull rod, and the connecting hole and the convex pin form a sliding guide fit.

[0019] Furthermore, the flame nozzle and the fixed pipe 4 are connected via a rotary joint.

[0020] Furthermore, the switching assembly includes a reversing valve, which includes four connecting nozzles distributed in an array along a circumferential direction, one connecting nozzle is provided with a blower, one connecting nozzle is provided with an induced draft fan, one connecting nozzle is provided with a first connecting pipe, and one connecting nozzle is provided with a second connecting pipe. The connecting nozzle provided with the induced draft fan and the connecting nozzle provided with the blower are located on the same straight line. The air inlet end of the blower is provided with an air inlet pipe, and the air outlet end of the induced draft fan is provided with a discharge pipe.

[0021] The reversing valve includes a state 1 and a state 2. When the reversing valve is in the state 1, the blower is connected to the first connecting pipe and the induced draft fan is connected to the second connecting pipe. When the reversing valve is in the state 2, the blower is connected to the second connecting pipe and the induced draft fan is connected to the first connecting pipe.

[0022] The upper pipes in the two combustion assemblies are connected to the first connecting pipe and the second connecting pipe respectively.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] One of the core of this solution is the improvement of the combustion component. Figure 3 Taking the perspective as an example, the effect of using the left combustion component is described in detail:

[0025] The reciprocating swinging motion of the flame nozzle can make the flame heat the upper surface of the aluminum material in the furnace body more evenly, thereby improving the smelting effect and efficiency. The reciprocating swinging motion is specifically manifested as follows: the flame nozzle first swings to the upper right side, and then swings to the lower left side. The former causes the distance between the flame nozzle and the aluminum material to gradually increase, while the latter causes the distance between the flame nozzle and the aluminum material to gradually decrease. Therefore, in order to make the flame burn the aluminum material and improve the smelting effect and efficiency, it is necessary to increase or decrease the length of the flame according to the distance between the flame nozzle and the aluminum material, that is, to increase or decrease the supply of gas and combustion air accordingly. Since the increase or decrease of the flame will cause the firepower to increase or decrease accordingly, in order to achieve balanced heating of the aluminum material, the flame nozzle needs to accelerate the swinging when the firepower increases, and decelerate the swinging when the firepower decreases.

[0026] In contrast, in the second embodiment of the driving unit of the present invention, the reciprocating oscillation motion of the flame nozzle is driven by the rotation of the impeller shaft. Therefore, if the supply of combustion air and gas increases, the rotation speed of the impeller shaft increases, which increases the oscillation speed of the flame nozzle. If the rotation speed of the impeller shaft decreases, the oscillation speed of the flame nozzle decreases. Therefore, the above-mentioned effect of uniform heating of the aluminum material can be achieved.

[0027] In addition, in this solution, the premixing of combustion air and gas is also achieved through the rotation of the impeller shaft. Therefore, as the supply of combustion air and gas increases, the rotation speed of the impeller shaft increases, which enhances the mixing effect, thereby achieving the effect that even if the supply of combustion air and gas increases, the premixing effect will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front schematic diagram of the present invention;

[0029] Figure 2 It is a schematic diagram of the back side of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the present invention;

[0031] Figure 4 It is a structural diagram of the switching component;

[0032] Figure 5 is a schematic diagram of a reversing valve;

[0033] Figure 6 It is a structural diagram of the combustion component;

[0034] Figure 7 It is a partial schematic diagram of the combustion component;

[0035] Figure 8 It is a partial cross-sectional view of the combustion component;

[0036] Figure 9 is a schematic diagram of the driving components;

[0037] Figure 10 Schematic diagram of the drive unit of the second embodiment Figure 1 ;

[0038] Figure 11 Schematic diagram of the drive unit of the second embodiment Figure 2 .

[0039] The reference numerals in the accompanying drawings are:

[0040] 100, furnace body; 101, inlet; 102, cover; 103, output valve; 104, high-temperature smoke pipe; 200, switching assembly; 201, reversing valve; 202, blower; 203, induced draft fan; 204, first connecting pipe; 205, second connecting pipe; 206, air inlet pipe; 207, exhaust pipe; 300, combustion assembly; 301, regenerator; 302, upper pipe; 303, lower pipe; 304, tee pipe; 305, one-way valve 1; 306, one-way valve 2; 307, control valve; 308, turbine; 3081, blade Axle; 3082, turbine blade; 309, fixed pipe 1; 3091, spiral blade; 310, fixed pipe 2; 311, annular main pipe; 3111, radial branch pipe; 3112, tapered pipe; 3113, gas valve; 312, fixed pipe 3; 3121, sensor; 313, fixed pipe 4; 314, flame nozzle; 3141, lug; 315, drive component; 3151, connecting rod; 3152, push-pull rod; 3153, linear module; 3154, connecting hole; 3155, rotating shaft; 3156, turntable; 3157, protruding pin. DETAILED DESCRIPTION

[0041] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0042] Reference Figure 1-Figure 3 An aluminum melting furnace includes a furnace body 100. An inlet 101 is provided on the side of the furnace body 100. A sealing cover 102 is matched with the inlet 101. The sealing cover 102 is opened and aluminum material is added into the furnace body 100 through the inlet 101. After the addition is completed, the sealing cover 102 is closed. An outlet is also provided on the side of the furnace body 100. An output valve 103 is matched with the outlet. After the aluminum material is melted, the output valve 103 is opened and the aluminum liquid is output to the outside through the outlet.

[0043] Reference Figure 1-Figure 3A premixed gas burner includes a switching component 200 and two combustion components 300 respectively arranged on both sides of the furnace body 100. The switching component 200 is used to guide the combustion air into the combustion component 300 and at the same time guide the smoke generated by the combustion to be discharged outward.

[0044] Reference Figure 4 and Figure 5 The switching component 200 includes a reversing valve 201, and the reversing valve 201 includes four connecting nozzles distributed in an array along the circumferential direction. Among the four connecting nozzles, one connecting nozzle is provided with a blower 202, one connecting nozzle is provided with an induced draft fan 203, one connecting nozzle is provided with a first connecting pipe 204, and one connecting nozzle is provided with a second connecting pipe 205. The connecting nozzle provided with the induced draft fan 203 and the connecting nozzle provided with the blower 202 are located on the same straight line.

[0045] An air inlet pipe 206 is provided at the air inlet end of the blower 202 , and an air discharge pipe 207 is provided at the air outlet end of the induced draft fan 203 .

[0046] The reversing valve 201 includes state one and state two. When in state one, the blower 202 is connected to the first connecting pipe 204, and the induced draft fan 203 is connected to the second connecting pipe 205. When in state two, conversely, the blower 202 is connected to the second connecting pipe 205, and the induced draft fan 203 is connected to the first connecting pipe 204. The reversing valve 201 can be implemented by existing technology and will not be described in detail.

[0047] Reference Figures 6-11 One of the core elements of this solution is the combustion assembly 300.

[0048] The combustion assembly 300 includes a heat storage chamber 301, a heat storage body is arranged in the heat storage chamber 301, an upper pipe 302 is arranged on the upper surface of the heat storage chamber 301, and a lower pipe 303 is arranged at the bottom of the heat storage chamber 301. The upper pipes 302 in the two combustion assemblies 300 are respectively connected to the first connecting pipe 204 and the second connecting pipe 205.

[0049] The combustion assembly 300 also includes a tee pipe 304, which is a prior art and includes three interfaces. Among the three interfaces, one interface is connected to the lower pipe 303, and one interface is connected to the chamber of the furnace body 100 through the high-temperature smoke pipe 104. A one-way valve 2 306 is provided at one interface, and a control valve 307 is provided at the end of the one-way valve 2 306, and a turbine 308 is provided at the end of the control valve 307. In addition, a one-way valve 1 305 is provided at the connection between the high-temperature smoke pipe 104 and the tee pipe 304.

[0050] One-way valve 1 305 is used to allow the gas in the high-temperature smoke pipe 104 to flow into the three-way pipe 304 in one direction, and one-way valve 2 306 is used to allow the gas in the three-way pipe 304 to flow into the control valve 307 in one direction. The one-way valve can be realized by existing technology and will not be described in detail.

[0051] A horizontally arranged gas circulation pipe is provided at the opening of the casing of the turbine 308. Furthermore, the gas circulation pipe includes a fixed pipe 1 309 provided at the opening of the casing, a fixed pipe 2 310 is coaxially provided at the end of the fixed pipe 1 309, a fixed pipe 312 is coaxially provided at the end of the fixed pipe 2 310, a fixed pipe 4 313 is provided at the end of the fixed pipe 312, and a fixed pipe 4 313 is provided at the end of the fixed pipe 312. The end of the fixed pipe 4 313 extends into the furnace body 100 and is hingedly provided with a flame nozzle 314. The flame nozzle 314 and the fixed pipe 4 313 can be connected by using a rotary joint technology, which will not be elaborated herein.

[0052] A spiral blade 3091 is provided in the fixed tube 1 309 , the end of the impeller shaft 3081 of the turbine 308 extends into the fixed tube 2 310 and is provided with turbine blades 3082 , and a conical tube 3112 is provided on the outside of the impeller shaft 3081 , and the conical tube 3112 is located in the fixed tube 2 310 .

[0053] An annular main pipe 311 is provided on the outside of the second fixed pipe 310. A gas nozzle is provided on the outer surface of the annular main pipe 311, and a gas valve 3113 is provided on the gas nozzle. When the gas valve 3113 is opened, the gas can enter the annular main pipe 311. The outer surface of the annular main pipe 311 is also arranged in an array with a plurality of radial branch pipes 3111. The ends of the radial branch pipes 3111 extend into the second fixed pipe 310 and connect to the conical pipe 3112. The end of the conical pipe 3112 with a larger diameter faces the turbine blades 3082. Therefore, the gas eventually enters the second fixed pipe 310 through the conical pipe 3112. At the same time, as the impeller shaft 3081 rotates with the turbine blades 3082, the gas enters the second fixed pipe 310 in a spiral vortex under the pull of the turbine blades 3082. When the combustion air passes through the turbine 308, it causes the impeller shaft 3081 to rotate. At the same time, the combustion air is guided by the spiral blades 3091. It enters the fixed tube 2 310 in the form of a spiral vortex, and then the combustion air and the gas collide. Preferably, the spiral vortex directions of the two are opposite, so as to improve the collision effect and thus improve the pre-mixing effect of the two. In addition, since the impeller shaft 3081 is driven by the flow of the combustion air to rotate, it rotates with the turbine blades 3082. That is, if it is necessary to increase the firepower, the amount of combustion air and gas needs to be increased synchronously in proportion, and the rotation speed of the impeller shaft 3081 will also increase accordingly, and the pre-mixing effect will also be improved. That is: as the amount of combustion air and gas increases, the mixing effect also increases adaptively, so the problem of insufficient mixing will not occur. On the contrary, the stirring action commonly used in the prior art cannot achieve the adaptive increasing effect. Once the amount of combustion air and gas increases, the mixing time is shortened and the mixing effect will deteriorate. This problem does not exist in this solution.

[0054] A sensor 3121 is provided in the fixed pipe 312 for real-time monitoring of the gas concentration of the premixed gas. The significance of this is that insufficient combustion air will lead to incomplete combustion, while excessive combustion air will dilute the gas and affect combustion. Therefore, real-time monitoring is performed through the sensor 3121, and a fault alarm signal is issued in time if a problem occurs.

[0055] An ignition needle is provided in the flame nozzle 314 for igniting the mixed gas, i.e., a gas flame.

[0056] The combustion assembly 300 further includes a driving component 315 for driving the flame spray head 314 to reciprocate and swing around the hinge axis.

[0057] Reference Figure 8 The outer circumferential surface of the flame nozzle 314 is provided with a lug 3141 .

[0058] Reference Figure 7 and Figure 9The driving component 315 includes a push-pull rod 3152, which can only move along the axial direction of the gas circulation pipeline. Furthermore, a guide bracket can be set on the outer surface of the gas circulation pipeline, and a sliding connection is formed between the guide bracket and the push-pull rod 3152 along the axial direction of the gas circulation pipeline.

[0059] A connecting rod 3151 is hingedly provided between the end of the push-pull rod 3152 extending into the furnace body 100 and the lug 3141. When the push-pull rod 3152 moves backward or forward, the flame nozzle 314 can be pulled to swing or reversely swing around the hinge axis through the connecting rod 3151.

[0060] The driving component 315 further includes a driving unit for driving the push-pull rod 3152 to move. The driving unit has various implementations, for example:

[0061] First, refer to Figure 9 The driving unit includes a linear module 3153, which uses existing electric telescopic rod technology or existing screw linear motion technology to drive the push-pull rod 3152 to reciprocate.

[0062] Second, refer to Figure 10 and Figure 11 The driving unit includes a rotating shaft 3155. Both ends of the impeller shaft 3081 of the turbine 308 extend out of the casing. One end is provided with a turbine blade 3082, and the other end is connected to the input end of the rotating shaft 3155 to form a power connection. The power connection method adopts the existing power transmission route and will not be elaborated.

[0063] A turntable 3156 is coaxially provided at the output end of the rotating shaft 3155 , and a protruding pin 3157 is eccentrically provided on the end face of the turntable 3156 . A vertically arranged linkage hole 3154 is provided on the push-pull rod 3152 , and the linkage hole 3154 and the protruding pin 3157 form a sliding guide fit.

[0064] The impeller shaft 3081 drives the rotating shaft 3155 and the turntable 3156 to rotate. When the turntable 3156 rotates, the push-pull rod 3152 is pulled to reciprocate through the cooperation of the connecting hole 3154 and the protruding pin 3157. Furthermore, the second driving mode is preferred, and the advantages are explained in detail later.

[0065] Working principle of the present invention:

[0066] This solution adopts dual regenerative high-temperature air combustion technology. Therefore, the switching of the two combustion assemblies 300 realizes the utilization of the waste heat of the high-temperature flue gas. This is consistent with the existing technology and will not be described in detail. One of the core of this solution is the improvement of the combustion assembly 300. Specifically:

[0067] When the combustion air passes through the turbine 308, it causes the impeller shaft 3081 to rotate, and the impeller shaft 3081 rotates with the turbine blades 3082;

[0068] The gas enters the second fixed tube 310 through the annular main tube 311, the radial branch tube 3111, and the tapered tube 3112. Simultaneously, due to the rotation of the turbine blades 3082 and their proximity to the tapered tube 3112, the gas enters the second fixed tube 310 in a spiral vortex. Simultaneously, the combustion-supporting air, guided by the spiral blades 3091, also enters the second fixed tube 310 in a spiral vortex. Consequently, the combustion-supporting air and the gas collide. Preferably, the spiral vortices of the two gases are directed in opposite directions, which further enhances the collision effect and thus the premixing effect of the two gases.

[0069] At the same time, the impeller shaft 3081 rotates with the rotating shaft 3155 and the turntable 3156. When the turntable 3156 rotates, the push-pull rod 3152 is pulled to reciprocate through the cooperation of the connecting hole 3154 and the protruding pin 3157, thereby causing the flame nozzle 314 to reciprocate and swing around the hinge axis.

[0070] From the above description we can see that:

[0071] For ease of description, Figure 3 Taking the perspective as an example, the effect of using the left combustion component is described in detail:

[0072] The reciprocating swinging motion of the flame nozzle can make the flame heat the upper surface of the aluminum material in the furnace body more evenly, thereby improving the smelting effect and efficiency. The reciprocating swinging motion is specifically manifested as follows: the flame nozzle first swings to the upper right side, and then swings to the lower left side. The former causes the distance between the flame nozzle and the aluminum material to gradually increase, while the latter causes the distance between the flame nozzle and the aluminum material to gradually decrease. Therefore, in order to make the flame burn the aluminum material and improve the smelting effect and efficiency, it is necessary to increase or decrease the length of the flame according to the distance between the flame nozzle and the aluminum material, that is, to increase or decrease the supply of gas and combustion air accordingly. Since the increase or decrease of the flame will cause the firepower to increase or decrease accordingly, in order to achieve balanced heating of the aluminum material, the flame nozzle needs to accelerate the swinging when the firepower increases, and decelerate the swinging when the firepower decreases.

[0073] In contrast, in the second embodiment of the driving unit of the present invention, the reciprocating oscillation motion of the flame nozzle is driven by the rotation of the impeller shaft. Therefore, if the supply of combustion air and gas increases, the rotation speed of the impeller shaft increases, which increases the oscillation speed of the flame nozzle. If the rotation speed of the impeller shaft decreases, the oscillation speed of the flame nozzle decreases. Therefore, the above-mentioned effect of uniform heating of the aluminum material can be achieved.

[0074] In addition, in this solution, the premixing of combustion air and gas is also achieved through the rotation of the impeller shaft. Therefore, as the supply of combustion air and gas increases, the rotation speed of the impeller shaft increases, which enhances the mixing effect, thereby achieving the effect that even if the supply of combustion air and gas increases, the premixing effect will not be affected.

[0075] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A premixed gas burner, comprising a furnace body (100), a switching assembly (200), and two combustion assemblies (300) respectively arranged on both sides of the furnace body (100), characterized in that: The combustion assembly (300) includes a turbine (308), a gas flow pipe arranged horizontally is provided at the gas outlet end of the turbine (308), the gas flow pipe includes a fixed pipe 1 (309) provided at the gas outlet end of the turbine (308), a fixed pipe 2 (310) is coaxially provided at the end of the fixed pipe 1 (309), a fixed pipe 3 (312) is coaxially provided at the end of the fixed pipe 2 (310), a fixed pipe 4 (313) is provided at the end of the fixed pipe 3 (312), and the end of the fixed pipe 4 (313) extends into the furnace body (100) and is hingedly provided with a flame nozzle (314); A spiral blade (3091) is provided in the fixed pipe (309), the end of the impeller shaft (3081) of the turbine (308) extends into the fixed pipe (310) and is provided with a turbine blade (3082), the outer sleeve of the impeller shaft (3081) is provided with a cone tube (3112), the outer surface of the fixed pipe (310) is provided with an annular main pipe (311), the outer surface of the annular main pipe (311) is provided with a gas nozzle and a gas valve (3113) is provided on the gas nozzle, the outer surface of the annular main pipe (311) is distributed with a plurality of radial branch pipes (3111) in an array, the ends of the radial branch pipes (3111) extend into the fixed pipe (310) and are connected to the cone tube (3112), and the end of the cone tube (3112) with a larger diameter faces the turbine blade (3082); The combustion assembly (300) includes a heat storage chamber (301) and a three-way pipe (304). A heat storage body is provided in the heat storage chamber (301), and an upper pipe (302) is provided on the upper surface of the heat storage chamber (301). The three-way pipe (304) includes three interfaces, one interface is connected to the bottom of the heat storage chamber (301) through the lower pipe (303), one interface is connected to the chamber of the furnace body (100) through the high-temperature smoke pipe (104), one interface is provided with a second one-way valve (306), the end of the second one-way valve (306) is provided with a control valve (307), the end of the control valve (307) is connected to the air inlet end of the turbine (308), and a first one-way valve (305) is provided at the connection between the high-temperature smoke pipe (104) and the three-way pipe (304); One-way valve 1 (305) is used to allow the gas in the high-temperature smoke pipe (104) to flow into the three-way pipe (304) in a one-way direction, and one-way valve 2 (306) is used to allow the gas in the three-way pipe (304) to flow into the control valve (307) in a one-way direction.

2. A premixed gas burner according to claim 1, characterized in that: A sensor (3121) for real-time monitoring of the gas concentration of the premixed gas is provided in the fixed tube three (312), and an ignition needle is provided in the flame nozzle (314).

3. A premixed gas burner according to claim 1, characterized in that: The combustion assembly (300) further includes a driving component (315) for driving the flame spray head (314) to reciprocate and swing around the hinge axis.

4. A premixed gas burner according to claim 3, characterized in that: The outer circumferential surface of the flame nozzle (314) is provided with a lug (3141); The driving component (315) includes a push-pull rod (3152), which can only move along the axis of the gas circulation pipe. A connecting rod (3151) is hingedly provided between the end of the push-pull rod (3152) extending into the furnace body (100) and the lug (3141). When the push-pull rod (3152) moves, the flame nozzle (314) can be pulled to swing around the hinge axis through the connecting rod (3151); The driving component (315) further includes a driving unit for driving the push-pull rod (3152) to move.

5. A premixed gas burner according to claim 4, characterized in that: The drive unit comprises a linear module (3153), the linear module (3153) comprises an electric telescopic rod, and the output end of the electric telescopic rod is connected to the push-pull rod (3152).

6. A premixed gas burner according to claim 4, characterized in that: The driving unit includes a rotating shaft (3155), both ends of the impeller shaft (3081) of the turbine (308) extend out of the casing, the impeller shaft (3081) and the input end of the rotating shaft (3155) form a power connection, a rotating disk (3156) is coaxially provided at the output end of the rotating shaft (3155), a convex pin (3157) is eccentrically provided on the end face of the rotating disk (3156), and a vertically arranged connecting hole (3154) is provided on the push-pull rod (3152), and the connecting hole (3154) and the convex pin (3157) form a sliding guide fit.

7. The premixed gas burner according to claim 3, characterized in that: The flame nozzle (314) and the fixed pipe (313) are connected via a rotary joint.

8. The premixed gas burner according to claim 3, characterized in that: The switching assembly (200) includes a reversing valve (201), the reversing valve (201) includes four connecting nozzles distributed in an array along a circumferential direction, one connecting nozzle is provided with a blower (202), one connecting nozzle is provided with an induced draft fan (203), one connecting nozzle is provided with a first connecting pipe (204), and one connecting nozzle is provided with a second connecting pipe (205), the connecting nozzle provided with the induced draft fan (203) and the connecting nozzle provided with the blower (202) are located on the same straight line, an air inlet end of the blower (202) is provided with an air inlet pipe (206), and an air outlet end of the induced draft fan (203) is provided with a discharge pipe (207); The reversing valve (201) includes a state one and a state two. When the reversing valve (201) is in state one, the blower (202) is connected to the first connecting pipe (204), and the induced draft fan (203) is connected to the second connecting pipe (205). When the reversing valve (201) is in state two, the blower (202) is connected to the second connecting pipe (205), and the induced draft fan (203) is connected to the first connecting pipe (204). The upper pipes (302) in the two combustion assemblies (300) are connected to the first connecting pipe (204) and the second connecting pipe (205) respectively.

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