A DX-40 negative oxygen burner assembly for industrial heat treatment furnaces

Abstract

The present invention discloses a DX‑40 negative oxygen burner assembly for an industrial heat treatment furnace, comprising an air intake connecting pipe, one end of the air intake connecting pipe being fixedly connected to a burner casting, an interior of the burner casting being provided with a mixing chamber at one end close to the air intake connecting pipe, and an interior of the burner casting being provided with a nozzle at one end away from the air intake connecting pipe. The DX‑40 negative oxygen burner assembly for an industrial heat treatment furnace further comprises a core rod structure. The present invention relates to the technical field of heat treatment furnace equipment, and through the coordination between the air intake connecting pipe, the burner casting, the mixing chamber, the nozzle, the core rod structure, the ignition component and the dispersion structure, the mixed gas can be evenly mixed inside the burner casting and transported to the heat treatment furnace, and the ejected mixed gas is ignited by using ignition combustion gas on the outside of the nozzle, so that the natural gas or liquefied petroleum gas is incompletely burned to generate an atmosphere, thereby avoiding the ignition failure in the cavity due to uneven gas mixing, improving the stability of the combustion atmosphere, and improving product quality.

Description

Technical Field

[0001] The invention relates to the technical field of heat treatment furnaces, in particular to a DX-40 negative oxygen burner assembly for an industrial heat treatment furnace. Background Art

[0002] Negative oxygen burners are industrial combustion equipment used for efficient combustion. Their core feature is that they precisely control the mixing ratio of oxygen and fuel, allowing the mixed gas to burn in a low-oxygen environment. After combustion, an atmosphere is generated. This atmosphere can adjust the redox environment in the heat treatment furnace and play a key role in heat treatment of workpieces. It can significantly improve combustion efficiency or adapt to special process requirements, reduce energy consumption, and effectively control the emission of harmful gases, protecting the ecological environment. It has become one of the indispensable and important equipment in metal heat treatment.

[0003] In the existing technology, when the negative oxygen burner used in the industrial heat treatment furnace generates a high-temperature atmosphere, the mixed gas is ignited in the burner cavity using a spark plug. The ignition process is often not stable enough, resulting in large fluctuations in combustion efficiency and prone to ignition failure. The generated atmosphere varies greatly, affecting the uniformity of the heat treatment furnace and product quality. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a DX-40 negative oxygen burner assembly for an industrial heat treatment furnace, which solves the problem that when the negative oxygen burner used in an industrial heat treatment furnace generates a high-temperature atmosphere, the mixed gas is ignited in the burner chamber using a spark plug, and the ignition process is often not stable enough, resulting in large fluctuations in combustion efficiency and prone to ignition failure. The generated atmosphere varies greatly, affecting the uniformity of the heat treatment furnace and product quality.

[0005] To achieve the above-mentioned objectives, the present invention is implemented through the following technical solutions: a DX-40 negative oxygen burner assembly for an industrial heat treatment furnace, comprising an air intake connecting pipe, one end of the air intake connecting pipe is fixedly connected to a burner casting, a mixing chamber is provided inside the burner casting close to the end of the air intake connecting pipe, and a nozzle is provided inside the burner casting away from the end of the air intake connecting pipe. The DX-40 negative oxygen burner assembly for an industrial heat treatment furnace also includes a core rod structure, which is provided inside the burner casting; the ignition component is provided on the top side of the burner casting; and the dispersion structure is provided on the side where the air intake connecting pipe and the burner casting are close to each other; wherein, the mixed gas is evenly transported inside the burner casting through the core rod structure, the ignition component performs an ignition operation at the top of the nozzle to ignite the mixed gas, and incomplete combustion of natural gas or liquefied petroleum gas generates an atmosphere, and the dispersion structure evenly disperses the mixed gas transported to the burner casting.

[0006] Preferably, the core rod structure includes a burner core rod, which is arranged inside the burner casting; the porcelain column is fixedly connected to the end of the burner core rod; the round head end is arranged at the end of the porcelain column; the core rod support structure is arranged on the side where the air inlet connecting pipe and the burner casting are close to each other; the core rod fixing structure is arranged at the end of the burner core rod away from the porcelain column; wherein, through the cooperation of the burner core rod, the porcelain column and the round head end, the mixed gas flows evenly inside the burner casting, and the burner core rod is supported and fixed inside the burner casting by the core rod support structure and the core rod fixing structure.

[0007] Preferably, the core rod support structure includes a positioning connecting plate, which is fixedly connected to the side of the air inlet connecting pipe and the burner casting that are close to each other; the center tube is fixedly connected to the inside of the positioning connecting plate; the connecting rod is arranged at the end of the burner core rod away from the porcelain column, and is cooperatively connected to the inner wall of the center tube; wherein, the burner core rod is supported inside the burner casting by inserting the connecting rod into the inside of the center tube, and remains concentric with the mixing chamber and the nozzle.

[0008] Preferably, the core rod fixing structure includes a threaded rod, which is arranged at the end of the connecting rod away from the burner core rod and passes through the center tube; the fixing nut is threadedly connected to the outer wall of the threaded rod and is cooperatively connected to the center tube; wherein, the threaded rod passes through the center tube and the burner core rod is fixed inside the burner casting by screwing in the fixing nut.

[0009] Preferably, the ignition assembly includes an ignition port, which is arranged on the burner casting above the nozzle; a fixed tube is fixedly connected to the inner wall of the ignition port; a metal liner is arranged inside the fixed tube; the ignition burner core is fixedly connected to the inside of the metal liner; the ignition fuel gas inlet is fixedly connected to the top of the fixed tube and is connected to the inside of the metal liner; a high-voltage electronic spark plug is installed at one end of the fixed tube close to the ignition port; the control and measurement assembly is arranged at the end of the fixed tube away from the ignition port; a sealing structure is arranged on the side where the fixed tube and the control and measurement assembly are close to each other; wherein, the combustion gas is evenly transported to the inside of the fixed tube through the ignition fuel gas inlet, and ignited by the high-voltage electronic spark plug, so that the flame is transferred to the ignition port, igniting the mixed gas ejected from the nozzle, the control and measurement assembly controls and measures the combustion condition of the combustion gas, and the sealing structure is sealed at the end of the fixed tube.

[0010] Preferably, the control and detection component includes an adding tube, which is fixedly connected to the end of the fixed tube; the UV flame detector is installed at the end of the adding tube away from the fixed tube; wherein the UV flame detector is installed at the end of the adding tube to sense the combustion condition of the combustion gas in the fixed tube.

[0011] Preferably, the sealing structure includes a silicone sealing gasket, which is arranged on the side where the fixed tube and the adding tube are close to each other; quartz glass is arranged on the side of the silicone sealing gasket close to the metal liner and is connected to the silicone sealing gasket; wherein, through the cooperation of the silicone sealing gasket and the quartz glass, the fixed tube and the adding tube are kept sealed, and the interior of the fixed tube can be seen through the quartz glass, which facilitates the UV flame detector to sense the combustion situation.

[0012] Preferably, the dispersion structure includes an arc-shaped end, which is arranged on the side of the fixing nut away from the center tube; the fixing groove is arranged on the side of the air intake connecting pipe close to the burner casting; the dispersion plate is connected to the inner wall of the fixing groove, and is connected to the positioning connecting plate and the center tube; the dispersion holes are equidistantly arranged on the outer wall of the dispersion plate; wherein, the mixed gas transported in the air intake connecting pipe is initially dispersed by the arc-shaped end, and the mixed gas is secondarily dispersed by the dispersion plate and the dispersion holes, so that the mixed gas can be evenly dispersed and mixed when it is transported from the inside of the air intake connecting pipe to the mixing chamber.

[0013] Preferably, a connecting pipe fixing structure is provided at one end of the air intake connecting pipe away from the burner casting, and the connecting pipe fixing structure includes a fixing plate, which is provided on the side of the air intake connecting pipe away from the burner casting; fixing holes are equidistantly opened on the outer wall of the fixing plate; and an extension pipe is provided on the side of the fixing plate away from the burner casting; wherein, the air intake connecting pipe is connected to the mixed gas delivery pipe through the cooperation of the fixing plate and the fixing holes, and the connection stability between the air intake connecting pipe and the mixed gas delivery pipe is increased through the extension pipe.

[0014] Preferably, heat sinks are arranged at equal intervals on the outer wall of the adding tube.

[0015] Beneficial effects: The present invention provides a DX-40 negative oxygen burner assembly for an industrial heat treatment furnace. It has the following beneficial effects: The DX-40 negative oxygen burner assembly for an industrial heat treatment furnace cooperates with the air inlet connecting pipe, the burner casting, the mixing chamber, the nozzle, the core rod structure, the ignition component and the dispersion structure. By dispersing the mixed gas, the mixed gas can be evenly mixed inside the burner casting and transported to the heat treatment furnace, which can avoid the situation where the local concentration of the mixed gas is too high or too low during the transportation process. By using the ignition combustion gas on the outside of the nozzle to ignite the ejected mixed gas, the natural gas or liquefied petroleum gas can be incompletely burned to generate an atmosphere of carbon monoxide, carbon dioxide, hydrogen, etc., thereby avoiding the situation where ignition failure occurs in the cavity due to uneven gas mixing, improving the stability of the combustion atmosphere, ensuring the uniformity of metal heat treatment, which helps to improve the quality of metal heat treatment products.

[0016] Through the coordination between the ignition port, fixed tube, metal liner, ignition burner core, ignition fuel gas inlet, high-voltage electronic spark plug, adding tube, UV flame controller, silicone sealing gasket and quartz glass, when the ignition fuel gas is burning in the fixed tube, the flame in the fixed tube is monitored in real time by the UV flame controller to ensure stable combustion of the flame. In addition, the control system can timely adjust the delivery amount of the ignition fuel gas or control the high-voltage electronic spark plug to ignite according to the sensing signal of the UV flame controller, to ensure the continuous stability of the flame and avoid unstable combustion or flameout. This helps to improve the reliability and stability of the negative oxygen burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the appearance of the present invention;

[0019] Figure 3 This is a cross-sectional view of the appearance of the air inlet connecting pipe, the burner casting and the ignition port in the present invention;

[0020] Figure 4 Schematic diagram of the appearance of the burner core rod, porcelain column and connecting rod in the present invention;

[0021] Figure 5 This is a schematic diagram of the appearance of the positioning connecting plate and the central tube in the present invention;

[0022] Figure 6 Schematic diagram of the appearance of the dispersion plate and dispersion holes in the present invention;

[0023] Figure 7 for Figure 1 A partial enlarged view of area A in the middle.

[0024] Figure: 1, air inlet connecting pipe; 2, burner casting; 3, mixing chamber; 4, nozzle; 5, core rod structure; 6, ignition assembly; 7, dispersion structure; 51, burner core rod; 52, porcelain column; 53, round head end; 54, core rod support structure; 55, core rod fixing structure; 541, positioning connecting plate; 542, center tube; 543, connecting rod; 551, threaded rod; 552, fixing nut; 61, ignition port; 62, fixing tube; 63, metal lining Tube; 64, pilot burner core; 65, pilot fuel gas inlet; 66, high-voltage electronic spark plug; 67, control and measurement component; 68, sealing structure; 671, adding tube; 672, UV flame control and detection device; 681, silicone sealing gasket; 682, quartz glass; 71, arc-shaped end; 72, fixing groove; 73, dispersion plate; 74, dispersion hole; 8, connecting pipe fixing structure; 81, fixing plate; 82, fixing hole; 83, extension pipe; 9, heat sink. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] When the negative oxygen burner used in an industrial heat treatment furnace generates a high-temperature atmosphere, the mixed gas is ignited in the burner cavity using a spark plug. The ignition process is often not stable enough, resulting in large fluctuations in combustion efficiency and prone to ignition failure. The generated atmosphere varies greatly, affecting the uniformity of the heat treatment furnace and product quality.

[0027] In view of this, the present invention provides a DX-40 negative oxygen burner assembly for an industrial heat treatment furnace. Through the coordination among the air inlet connecting pipe, the burner casting, the mixing chamber, the nozzle, the core rod structure, the ignition component and the dispersion structure, the mixed gas is dispersed so that the mixed gas can be evenly mixed inside the burner casting and transported to the heat treatment furnace, thereby avoiding the situation where the local concentration of the mixed gas is too high or too low during the transportation process. The ignition combustion gas is used on the outside of the nozzle to ignite the ejected mixed gas, so that the natural gas or liquefied petroleum gas is incompletely burned to generate an atmosphere of carbon monoxide, carbon dioxide, hydrogen, etc., thereby avoiding the situation where ignition failure in the cavity due to uneven gas mixing, improving the stability of the combustion atmosphere, ensuring the uniformity of metal heat treatment, and improving product quality.

[0028] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.

[0029] Depend on Figure 1-7It can be seen that a DX-40 negative oxygen burner assembly for an industrial heat treatment furnace includes an air intake connecting pipe 1, one end of the air intake connecting pipe 1 is fixedly connected to a burner casting 2, a mixing chamber 3 is provided inside the burner casting 2 at one end close to the air intake connecting pipe 1, and a nozzle 4 is provided inside the burner casting 2 at one end away from the air intake connecting pipe 1. The DX-40 negative oxygen burner assembly for an industrial heat treatment furnace also includes a core rod structure 5, an ignition component 6 and a dispersion structure 7, the core rod structure 5 is arranged inside the burner casting 2; the ignition component 6 is arranged on one side of the top of the burner casting 2; the dispersion structure 7 is arranged on the side where the air intake connecting pipe 1 and the burner casting 2 are close to each other; wherein, the mixed gas is uniformly transported inside the burner casting 2 through the core rod structure 5, the ignition component 6 performs an ignition operation at the top of the nozzle 4, ignites the mixed gas, and incompletely burns natural gas or liquefied petroleum gas to generate an atmosphere of carbon monoxide, carbon dioxide, hydrogen, etc., and the dispersion structure 7 uniformly disperses the mixed gas transported to the burner casting 2;

[0030] During the specific implementation process, it is worth noting that, through the cooperation among the air intake connecting pipe 1, the burner casting 2, the mixing chamber 3, the nozzle 4 and the core rod structure 5, the air intake connecting pipe 1 is connected to the mixed gas delivery pipe, the burner casting 2 is connected to the heat treatment furnace body, and natural gas or liquefied petroleum gas and combustion-supporting oxygen form a mixed gas in a certain proportion, which enters the mixing chamber 3 through the air intake connecting pipe 1, and is uniformly transported to the nozzle 4 through the core rod structure 5, and is ejected from the nozzle 4 to the interior of the heat treatment furnace, thereby realizing the transportation of the mixed gas. Through the cooperation among the air intake connecting pipe 1, the burner casting 2, the mixing chamber 3, the nozzle 4, the core rod structure 5 and the dispersion structure 7, when the mixed gas is transported from the air intake connecting pipe 1 to the mixing chamber 3, the mixed gas is dispersed so that the mixed gas can be evenly mixed in the mixing chamber 3 to avoid mixing. In the process of conveying gas, the concentration of the gas is locally too high or too low. To further ensure the uniformity of the mixed gas when it is ejected from the nozzle 4, the coordination among the air inlet connecting pipe 1, the burner casting 2, the mixing chamber 3, the nozzle 4, the core rod structure 5, the ignition assembly 6 and the dispersion structure 7 is used to disperse the mixed gas so that the mixed gas can be evenly mixed inside the burner casting 2 and conveyed to the heat treatment furnace, thereby avoiding the situation where the concentration of the mixed gas is locally too high or too low during the conveying process. In addition, the ignition combustion gas is used on the outside of the nozzle 4 to ignite the ejected mixed gas, so that the natural gas or liquefied petroleum gas is incompletely burned to generate an atmosphere of carbon monoxide, carbon dioxide, hydrogen, etc., thereby avoiding the situation where ignition failure occurs in the cavity due to uneven gas mixing, thereby improving the stability of the combustion atmosphere, ensuring the uniformity of metal heat treatment, and improving product quality.

[0031] Furthermore, the core rod structure 5 includes a burner core rod 51, a porcelain column 52, a round head end 53, a core rod support structure 54 and a core rod fixing structure 55. The burner core rod 51 is arranged inside the burner casting 2; the porcelain column 52 is fixedly connected to the end of the burner core rod 51; the round head end 53 is arranged at the end of the porcelain column 52; the core rod support structure 54 is arranged on the side where the air inlet connecting pipe 1 and the burner casting 2 are close to each other; the core rod fixing structure 55 is arranged at the end of the burner core rod 51 away from the porcelain column 52; wherein, through the cooperation of the burner core rod 51, the porcelain column 52 and the round head end 53, the mixed gas flows evenly inside the burner casting 2, and the burner core rod 51 is supported and fixed inside the burner casting 2 by the core rod support structure 54 and the core rod fixing structure 55;

[0032] During the specific implementation process, it is worth noting that, through the cooperation among the burner core rod 51, the porcelain column 52, the round head end 53, the core rod support structure 54 and the core rod fixing structure 55, the porcelain column 52 is fixed to the end of the burner core rod 51, and the burner core rod 51 is supported and fixed inside the burner casting 2 by the core rod support structure 54 and the core rod fixing structure 55, so that the mixed gas flows evenly inside the burner casting 2, and the burner core rod 51 and the porcelain column 52 have a larger diameter inside the nozzle 4, which reduces the gas flow area of ​​the nozzle 4, thereby reducing the flow rate of the mixed gas when flowing inside the burner casting 2, ensuring that the mixed gas can stably and fully burn to generate atmosphere, thereby improving the combustion efficiency of the mixed gas. In addition, the design of the round head end 53 not only helps to evenly disperse the mixed gas, but also reduces the resistance during gas flow, making the gas flow smoother.

[0033] Furthermore, the core rod support structure 54 includes a positioning connecting plate 541, a center tube 542, and a connecting rod 543. The positioning connecting plate 541 is fixedly connected to the side of the air inlet connecting pipe 1 and the burner casting 2 that is close to each other; the center tube 542 is fixedly connected to the interior of the positioning connecting plate 541; the connecting rod 543 is provided at the end of the burner core rod 51 away from the porcelain column 52 and is cooperatively connected to the inner wall of the center tube 542. The connecting rod 543 is inserted into the interior of the center tube 542, so that the burner core rod 51 is supported inside the burner casting 2 and remains concentric with the mixing chamber 3 and the nozzle 4.

[0034] During the specific implementation, it is worth noting that, through the coordination among the air inlet connecting pipe 1, the burner casting 2, the burner core rod 51, the positioning connecting plate 541, the center tube 542 and the connecting rod 543, and by inserting the connecting rod 543 of the burner core rod 51 into the center hole of the center tube 542, the burner core rod 51 is stably supported, and the axis of the burner core rod 51 is aligned with the center lines of the mixing chamber 3 and the nozzle 4, thereby ensuring that the mixed gas flows evenly inside the burner casting 2, thereby improving the combustion efficiency of the mixed gas.

[0035] Furthermore, the core rod fixing structure 55 includes a threaded rod 551 and a fixing nut 552. The threaded rod 551 is disposed at the end of the connecting rod 543 away from the burner core rod 51 and passes through the center tube 542. The fixing nut 552 is threadedly connected to the outer wall of the threaded rod 551 and is cooperatively connected to the center tube 542. The threaded rod 551 passes through the center tube 542 and is screwed into the fixing nut 552 to fix the burner core rod 51 inside the burner casting 2.

[0036] In the specific implementation process, it is worth noting that the burner core rod 51 is stably fixed inside the burner casting 2 through the cooperation among the air intake connecting pipe 1, the burner casting 2, the burner core rod 51, the positioning connecting plate 541, the center tube 542, the connecting rod 543, the threaded rod 551 and the fixing nut 552, thereby ensuring the stability of the burner core rod 51 during the mixed gas delivery and combustion process;

[0037] Furthermore, the ignition assembly 6 includes an ignition port 61, a fixed tube 62, a metal liner 63, an ignition burner core 64, an ignition fuel gas inlet 65, a high-voltage electronic spark plug 66, a control and measurement component 67 and a sealing structure 68. The ignition port 61 is arranged on the burner casting 2 above the nozzle 4; the fixed tube 62 is fixedly connected to the inner wall of the ignition port 61; the metal liner 63 is arranged inside the fixed tube 62; the ignition burner core 64 is fixedly connected to the inside of the metal liner 63; the ignition fuel gas inlet 65 is fixedly connected to the top of the fixed tube 62 and is connected to the inside of the metal liner 63; the high-voltage electric spark plug 66 is connected to the top of the burner casting ... The sub-spark plug 66 is installed at one end of the fixed tube 62 close to the ignition port 61; the control and detection assembly 67 is arranged at the end of the fixed tube 62 away from the ignition port 61; the sealing structure 68 is arranged on the side where the fixed tube 62 and the control and detection assembly 67 are close to each other; wherein, the combustion gas is evenly delivered to the interior of the fixed tube 62 through the ignition fuel gas inlet 65, and ignited by the high-voltage electronic spark plug 66, so that the flame is transmitted to the ignition port 61, igniting the mixed gas ejected from the nozzle 4, the control and detection assembly 67 controls and detects the combustion status of the combustion gas, and the sealing structure 68 is sealed at the end of the fixed tube 62;

[0038] During the specific implementation process, it is worth noting that, through the cooperation among the burner casting 2, the ignition port 61, the fixed tube 62, the metal liner 63, the ignition burner core 64, the ignition fuel gas inlet 65, the high-voltage electronic spark plug 66, the control and measurement component 67 and the sealing structure 68, the combustion gas is uniformly transported to the interior of the fixed tube 62 through the ignition fuel gas inlet 65, and ignited by the high-voltage electronic spark plug 66, so that the flame is transmitted to the ignition port 61, and the combustion condition of the ignition combustion gas is controlled and measured by the control and measurement component 67, so as to realize the ignition of the mixed gas ejected from the nozzle 4, avoid the situation of ignition failure, improve the stability of the combustion atmosphere, and ensure the uniformity and product quality of the heat treatment furnace. Among them, the specific model of the high-voltage electronic spark plug 66 is not limited, and it can meet the use requirements;

[0039] Furthermore, the control and detection assembly 67 includes a connecting tube 671 and a UV flame detector 672. The connecting tube 671 is fixedly connected to the end of the fixed tube 62; the UV flame detector 672 is installed at the end of the connecting tube 671 away from the fixed tube 62. The UV flame detector 672 is installed at the end of the connecting tube 671 to sense the combustion status of the combustion gas in the fixed tube 62.

[0040] During the specific implementation process, it is worth noting that, through the cooperation between the fixed tube 62, the additional tube 671 and the UV flame detector 672, the UV flame detector 672 can sense the combustion status of the combustion gas in the fixed tube 62 and transmit the sensing signal to the control system in real time, so that the control system can control the ignition timing of the high-voltage electronic spark plug 66, thereby ensuring that the mixed gas is stably ignited at the nozzle 4. The specific model of the UV flame detector 672 is not limited, and it can be used as long as it meets the requirements.

[0041] Furthermore, the sealing structure 68 includes a silicone gasket 681 and a quartz glass 682. The silicone gasket 681 is disposed on the side of the fixed tube 62 and the adding tube 671 where they are close to each other. The quartz glass 682 is disposed on the side of the silicone gasket 681 that is close to the metal liner 63 and is cooperatively connected to the silicone gasket 681. The cooperation between the silicone gasket 681 and the quartz glass 682 maintains a seal between the fixed tube 62 and the adding tube 671. The quartz glass 682 allows for a perspective view of the interior of the fixed tube 62, facilitating the UV flame detector 672 to sense the combustion condition.

[0042] In the specific implementation process, it is worth noting that the fixed tube 62, the adding tube 671, the silicone sealing gasket 681 and the quartz glass 682 are coordinated to maintain a seal between the fixed tube 62 and the adding tube 671, and the UV flame detector 672 can accurately sense the combustion condition through the quartz glass 682.

[0043] Furthermore, the dispersion structure 7 includes an arcuate end 71, a fixing groove 72, a dispersion plate 73, and dispersion holes 74. The arcuate end 71 is arranged on the side of the fixing nut 552 away from the center tube 542; the fixing groove 72 is arranged on the side of the intake connecting pipe 1 close to the burner casting 2; the dispersion plate 73 is cooperatively connected to the inner wall of the fixing groove 72, and is cooperatively connected to the positioning connecting plate 541 and the center tube 542; the dispersion holes 74 are equidistantly provided on the outer wall of the dispersion plate 73. The arcuate end 71 performs a primary dispersion on the mixed gas transported in the intake connecting pipe 1, and the dispersion plate 73 and the dispersion holes 74 perform a secondary dispersion on the mixed gas, so that the mixed gas can be evenly dispersed and mixed when it is transported from the interior of the intake connecting pipe 1 to the mixing chamber 3.

[0044] During the specific implementation process, it is worth noting that, through the cooperation between the fixing nut 552 and the arc-shaped end 71, the mixed gas transported by the intake connecting pipe 1 is evenly dispersed, the resistance during gas flow is reduced, the gas flow efficiency is further improved, and vortexes are avoided during the transportation of the mixed gas. Through the cooperation between the intake connecting pipe 1, the burner casting 2, the positioning connecting plate 541, the fixing groove 72, the dispersion plate 73 and the dispersion holes 74, when the mixed gas is transported from the inside of the intake connecting pipe 1 to the mixing chamber 3, the mixed gas can be evenly dispersed and mixed through the dispersion holes 74 of the dispersion plate 73, thereby improving the uniformity of the mixed gas and the combustion efficiency.

[0045] Furthermore, a connecting pipe fixing structure 8 is provided at one end of the air intake connecting pipe 1 away from the burner casting 2. The connecting pipe fixing structure 8 includes a fixing plate 81, a fixing hole 82, and an extension pipe 83. The fixing plate 81 is provided on the side of the air intake connecting pipe 1 away from the burner casting 2; the fixing holes 82 are equidistantly formed on the outer wall of the fixing plate 81; and the extension pipe 83 is provided on the side of the fixing plate 81 away from the burner casting 2. The fixing plate 81 and the fixing hole 82 cooperate to connect the air intake connecting pipe 1 to the mixed gas delivery pipe, and the extension pipe 83 increases the stability of the connection between the air intake connecting pipe 1 and the mixed gas delivery pipe.

[0046] In the specific implementation process, it is worth noting that the coordination between the fixing plate 81, the fixing hole 82 and the extension tube 83 realizes a stable connection between the air intake connecting pipe 1 and the mixed gas delivery pipe, and improves the installation convenience of the mixed gas delivery pipe and the negative oxygen burner.

[0047] Furthermore, heat sinks 9 are evenly spaced on the outer wall of the adding tube 671 , and the heat sinks 9 are used to improve the heat dissipation efficiency of the adding tube 671 ;

[0048] In the specific implementation process, it is worth noting that the heat sink 9 is used to improve the heat dissipation efficiency of the adding tube 671. By increasing the heat dissipation area, the heat dissipation is accelerated, ensuring that the UV flame detector 672 can operate within a suitable temperature range, thereby improving its detection accuracy and service life.

[0049] Working principle: the air intake connecting pipe 1 is connected to the mixed gas delivery pipe, the burner casting 2 is connected to the heat treatment furnace, natural gas or liquefied petroleum gas and combustion-supporting oxygen form a mixed gas in a certain proportion, which is transported to the mixing chamber 3 through the air intake connecting pipe 1. During the transportation process, the arc-shaped end 71, the dispersion plate 73 and the dispersion hole 74 disperse the mixed gas so that the mixed gas is evenly mixed in the mixing chamber 3. Subsequently, the mixed gas is further evenly transported to the nozzle 4 through the core rod structure 5, and is ejected from the nozzle 4 to the interior of the heat treatment furnace. At the same time, the ignition combustion gas is transported to the interior of the fixed pipe 62 through the ignition fuel gas inlet 65, and is transported from the fixed pipe 62 to the ignition port 61 for ejection. The high-voltage electronic spark plug 66 ignites the ignition combustion gas and tilts at the ignition port 61. The flame is ejected downward to ignite the mixed gas ejected from the nozzle 4, and the UV flame controller 672 senses the combustion status of the combustion gas in the fixed tube 62, and transmits the sensing signal to the control system in real time. The control system controls the ignition time of the high-voltage electronic spark plug 66 to ensure that the mixed gas is stably ignited at the nozzle 4, so that the mixed gas composed of natural gas or liquefied petroleum gas and combustion-supporting oxygen is incompletely burned to generate an atmosphere of carbon monoxide, carbon dioxide, hydrogen, etc. The atmosphere is sent into a high-temperature continuous furnace to form a uniform, solid, porous lattice of body-centered cubic Fe3O4 and hexagonal crystal Cr2O3 film (green or black) on the surface of the stainless steel tube, thereby improving the strength and high-temperature oxidation resistance of the stainless steel tube. At the same time, other metal materials can also be heat-treated.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A DX-40 negative oxygen burner assembly for an industrial heat treatment furnace, comprising an air inlet connecting pipe (1), characterized in that: One end of the air intake connecting pipe (1) is fixedly connected to a burner casting (2), an interior of the burner casting (2) close to one end of the air intake connecting pipe (1) is provided with a mixing chamber (3), and an interior of the burner casting (2) away from one end of the air intake connecting pipe (1) is provided with a nozzle (4), and the DX-40 negative oxygen burner assembly for an industrial heat treatment furnace further comprises: A core rod structure (5) is arranged inside the burner casting (2); An ignition assembly (6) is arranged on one side of the top of the burner casting (2); A dispersion structure (7) is provided on a side where the air inlet connecting pipe (1) and the burner casting (2) are close to each other; The core rod structure (5) is used to uniformly transport the mixed gas inside the burner casting (2), the ignition assembly (6) performs an ignition operation at the top of the nozzle (4) to ignite the mixed gas, and incompletely burns the natural gas or liquefied petroleum gas to generate an atmosphere, and the dispersion structure (7) uniformly disperses the mixed gas transported to the burner casting (2); The core rod structure (5) comprises: A burner core rod (51) is arranged inside the burner casting (2); A porcelain column (52) is fixedly connected to the end of the burner core rod (51); A rounded end (53) is provided at the end of the porcelain column (52); A core rod support structure (54) is provided on a side where the air inlet connecting pipe (1) and the burner casting (2) are close to each other; A core rod fixing structure (55) is provided at one end of the burner core rod (51) away from the porcelain column (52); The burner core rod (51), the porcelain column (52) and the round head end (53) cooperate to make the mixed gas flow evenly inside the burner casting (2), and the burner core rod (51) is supported and fixed inside the burner casting (2) by the core rod supporting structure (54) and the core rod fixing structure (55); The core rod support structure (54) comprises: A positioning connecting plate (541) is fixedly connected to a side of the air inlet connecting pipe (1) and the burner casting (2) close to each other; A central tube (542) is fixedly connected to the interior of the positioning connecting plate (541); A connecting rod (543) is provided at one end of the burner core rod (51) away from the porcelain column (52) and is cooperatively connected to the inner wall of the central tube (542); wherein the connecting rod (543) is inserted into the interior of the central tube (542), so that the burner core rod (51) is supported inside the burner casting (2) and is kept concentric with the mixing chamber (3) and the nozzle (4); The core rod fixing structure (55) comprises: A threaded rod (551) is provided at one end of the connecting rod (543) away from the burner core rod (51) and passes through the central tube (542); A fixing nut (552) is threadedly connected to the outer wall of the threaded rod (551) and is cooperatively connected to the central tube (542); The threaded rod (551) passes through the central tube (542), and the burner core rod (51) is fixed inside the burner casting (2) by screwing in the fixing nut (552); The dispersed structure (7) includes: An arc-shaped end (71) is provided on a side of the fixing nut (552) away from the center tube (542); A fixing groove (72) is provided on a side of the air inlet connecting pipe (1) close to the burner casting (2); A dispersion plate (73) is cooperatively connected to the inner wall of the fixing groove (72) and is cooperatively connected to the positioning connection plate (541) and the central tube (542); Dispersion holes (74) are equidistantly provided on the outer wall of the dispersion plate (73); The mixed gas transported in the air intake connecting pipe (1) is initially dispersed by the arc-shaped end (71), and the mixed gas is secondarily dispersed by the dispersion plate (73) and the dispersion hole (74), so that the mixed gas can be evenly dispersed and mixed when transported from the inside of the air intake connecting pipe (1) to the mixing chamber (3).

2. The DX-40 negative oxygen burner assembly for an industrial heat treatment furnace according to claim 1, characterized in that: The ignition assembly (6) comprises: A spark plug (61) is provided on the burner casting (2) above the nozzle (4); A fixed tube (62) fixedly connected to the inner wall of the ignition port (61); A metal lining tube (63) is arranged inside the fixed tube (62); A pilot burner core (64) is fixedly connected to the interior of the metal liner (63); An ignition fuel gas inlet (65) is fixedly connected to the top of the fixed pipe (62) and communicated with the interior of the metal liner (63); A high-voltage electronic spark plug (66) is mounted on one end of the fixed tube (62) near the ignition port (61); A control and measurement assembly (67) is arranged at one end of the fixed tube (62) away from the ignition port (61); A sealing structure (68) is provided on a side where the fixed tube (62) and the control and measurement component (67) are close to each other; The combustion gas is uniformly transported to the interior of the fixed tube (62) through the ignition fuel gas inlet (65), and ignited by the high-voltage electronic spark plug (66), so that the flame is transmitted to the ignition port (61), and the mixed gas ejected from the nozzle (4) is ignited. The control and measurement component (67) controls and measures the combustion condition of the combustion gas, and the sealing structure (68) is sealed at the end of the fixed tube (62).

3. The DX-40 negative oxygen burner assembly for an industrial heat treatment furnace according to claim 2, characterized in that: The control and measurement component (67) includes: An additional pipe (671) is fixedly connected to the end of the fixed pipe (62); A UV flame detector (672) is installed at the end of the adding tube (671) away from the fixed tube (62); The UV flame detector (672) is installed at the end of the adding tube (671) to sense the combustion condition of the combustion gas in the fixed tube (62).

4. The DX-40 negative oxygen burner assembly for an industrial heat treatment furnace according to claim 3 is characterized in that: The sealing structure (68) includes: A silicone sealing gasket (681) is provided on a side where the fixed tube (62) and the adding tube (671) are close to each other; The quartz glass (682) is disposed on a side of the silicone seal gasket (681) close to the metal liner (63) and is cooperatively connected to the silicone seal gasket (681); The silicone seal (681) and the quartz glass (682) cooperate to keep the fixed tube (62) and the added tube (671) sealed, and the interior of the fixed tube (62) can be viewed through the quartz glass (682), making it easier for the UV flame detector (672) to sense the combustion condition.

5. The DX-40 negative oxygen burner assembly for an industrial heat treatment furnace according to claim 4, characterized in that: A connecting pipe fixing structure (8) is provided at one end of the air inlet connecting pipe (1) away from the burner casting (2), and the connecting pipe fixing structure (8) comprises: A fixing plate (81) is arranged on a side of the air inlet connecting pipe (1) away from the burner casting (2); Fixing holes (82) are equidistantly provided on the outer wall of the fixing plate (81); An extension tube (83) is arranged on a side of the fixing plate (81) away from the burner casting (2); The air intake connecting pipe (1) is connected to the mixed gas delivery pipe by the cooperation of the fixing plate (81) and the fixing hole (82), and the connection stability between the air intake connecting pipe (1) and the mixed gas delivery pipe is increased by the extension pipe (83).

6. The DX-40 negative oxygen burner assembly for an industrial heat treatment furnace according to claim 5, characterized in that: The outer wall of the adding pipe (671) is provided with heat sinks (9) at equal intervals.

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