Low-nitrogen burner of heating furnace

Abstract

The utility model provides a heating furnace low-nitrogen combustor, and relates to the technical field of low-nitrogen combustors, the heating furnace low-nitrogen combustor comprises a boiler body and a low-nitrogen combustor body, a through groove is formed in the boiler body, a mounting seat is fixedly arranged on the outer side of the through groove, a mounting hole communicating with the through groove is formed in the mounting seat, and a clamping groove is formed in the side, away from the boiler body, of the mounting seat; the outer side of the low-nitrogen burner body is movably sleeved with a clamping piece matched with the clamping groove, a locking assembly is arranged on the low-nitrogen burner body, the locking assembly and the clamping piece are matched to lock the low-nitrogen burner body on the installation base, and a sealing piece is arranged at the connecting position of the locking assembly and the installation base. The boiler body is detachably connected with the low-nitrogen burner body, and when the low-nitrogen burner body breaks down, the low-nitrogen burner body can be conveniently detached for overhauling.

Description

Technical Field

[0001] The present application relates to the technical field of low-nitrogen burners, and in particular to a low-nitrogen burner for a heating furnace. Background Art

[0002] In the steel industry, heating furnaces are mainly used to heat steel billets or iron blocks to a suitable temperature to meet the requirements of subsequent processing technology, while low-nitrogen burners are used to reduce the emission of nitrogen oxides during the combustion process of the heating furnace and reduce the harm of nitrogen oxides to the environment and human health.

[0003] A Chinese patent with publication number CN216619825U discloses a low-nitrogen burner for a heating furnace. By modifying the fuel inlet of the pilot lamp, the air inlet of the pilot lamp is transformed into four-way and the air inlet is reduced, which effectively prevents a large air intake from causing incomplete combustion and forming nitrogen oxides. At the same time, the fuel gas inlet is modified, and the original one pipeline is transformed into a three-way pipeline, and the fuel gas inlet is reduced, so that the fuel entering the burner shell per unit time is reduced, which facilitates the full combustion of the fuel and avoids the formation of nitrogen oxides due to incomplete combustion of the fuel. At the same time, the burner is equipped with a separate air duct to avoid insufficient air volume when the fuel is burned early, resulting in excessive nitrogen oxides.

[0004] However, when the above-mentioned low-nitrogen burner of the heating furnace is used, the user inserts the burner shell into the through groove of the boiler body, and uses refractory fibers to seal the gap between the burner shell and the boiler body, and then welds the burner shell to the outer wall of the boiler body. Although this installation method has good sealing and firm installation, it is not easy to remove the low-nitrogen burner from the boiler body for inspection when a failure occurs in the low-nitrogen burner. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a low-nitrogen burner for a heating furnace, which can solve the technical problems raised by the background technology.

[0006] An embodiment of the present application provides a low-nitrogen burner for a heating furnace, comprising a boiler body and a low-nitrogen burner body, the boiler body being provided with a through groove, a mounting seat being fixedly provided on the outer side of the through groove, a mounting hole being provided on the mounting seat and being connected to the through groove, a clamping groove being provided on the side of the mounting seat away from the boiler body, a clamping piece matching the clamping groove being provided on the outer movable sleeve of the low-nitrogen burner body, a locking assembly being provided on the low-nitrogen burner body, the locking assembly cooperating with the clamping piece to lock the low-nitrogen burner body on the mounting seat, and a sealing piece being provided at the connection between the locking assembly and the mounting seat.

[0007] Furthermore, the locking assembly includes an external threaded sleeve, an extruded connector and a fastener. The external threaded sleeve is fixedly mounted on the low-nitrogen burner body and is located on a side of the clamping piece away from the boiler body. The extruded connector is fixedly mounted on the burner body and is located on a side of the clamping piece close to the boiler body. The fastener is threadedly connected to the external threaded sleeve, and the fastener can abut against the clamping piece.

[0008] Furthermore, an annular sealing groove is provided on a side of the extruded connector away from the clamping member, and the sealing member is interference fit in the annular sealing groove.

[0009] Furthermore, the sealing element is made of asbestos.

[0010] Furthermore, a first rotating handle and a second rotating handle are fixed to the fastener, and the first rotating handle and the second rotating handle are symmetrically arranged.

[0011] Furthermore, the first rotating handle and the second rotating handle are both provided with anti-slip patterns.

[0012] Furthermore, a heat insulating gasket is provided on a side of the extruded connector away from the clamping member.

[0013] Furthermore, glass fibers are wound around the low-nitrogen burner body, and the glass fibers are located in the through grooves.

[0014] Beneficial effects of the utility model:

[0015] The utility model has a mounting seat fixedly provided on the outer side of the through groove on the boiler body, and the low-nitrogen burner body is locked on the mounting seat by the cooperation of a locking assembly and a clamping piece, and a sealing piece is provided at the connection between the locking assembly and the mounting seat, so that the boiler body and the low-nitrogen burner body are detachably connected. When the low-nitrogen burner body fails, the low-nitrogen burner body can be conveniently removed for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of some embodiments of the present application;

[0018] Figure 2 It is a cross-sectional view of some embodiments of the present application;

[0019] Figure 3 It is a schematic diagram of the structural decomposition of the mounting base and the locking assembly in some embodiments of the present application;

[0020] The reference numerals are:

[0021] 1. Boiler body; 11. Through groove; 2. Low-nitrogen burner body; 3. Mounting seat; 31. Mounting hole; 32. Snap-in groove; 4. Snap-in piece; 5. Locking assembly; 51. External thread sleeve; 52. Extrusion connector; 521. Annular sealing groove; 53. Fastener; 531. First rotating handle; 532. Second rotating handle; 6. Seal; 7. Anti-slip pattern; 8. Thermal insulation gasket; 9. Glass fiber. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. Specific embodiment:

[0029] like Figure 1-3 As shown, the present application provides a low-nitrogen burner for a heating furnace, comprising a boiler body 1 and a low-nitrogen burner body 2, a through groove 11 being provided on the boiler body 1, a mounting seat 3 being fixedly provided on the outer side of the through groove 11, a mounting hole 31 being provided on the mounting seat 3 and being connected to the through groove 11, a clamping groove 32 being provided on the side of the mounting seat 3 away from the boiler body 1, a clamping piece 4 being matched with the clamping groove 32 being provided on the outer movable sleeve of the low-nitrogen burner body 2, a locking assembly 5 being provided on the low-nitrogen burner body 2, the locking assembly 5 cooperating with the clamping piece 4 to lock the low-nitrogen burner body 2 on the mounting seat 3, a sealing piece 6 being provided at the connection between the locking assembly 5 and the mounting seat 3, compared with the prior art, the boiler body 1 and the low-nitrogen burner body 2 are detachably connected through the mounting seat 3, the locking assembly 5 and the clamping piece 4, and when the low-nitrogen burner body 2 fails, the low-nitrogen burner body 2 can be conveniently removed for maintenance.

[0030] like Figure 1-3 As shown, the locking assembly 5 includes an external threaded sleeve 51, an extruded connector 52 and a fastener 53. The external threaded sleeve 51 is fixedly sleeved on the low-nitrogen burner body 2 and is located on the side of the clamping member 4 away from the boiler body 1. The extruded connector 52 is fixedly sleeved on the burner body and is located on the side of the clamping member 4 close to the boiler body 1. The fastener 53 is threadedly connected to the external threaded sleeve 51. The fastener 53 can abut against the clamping member 4. Specifically, the clamping member 4 is placed in the clamping groove 32, and the clamping member 4 is rotated to prevent the clamping member 4 from falling out. Then, the fastener 53 on the external threaded sleeve 51 is rotated to gradually approach the clamping member 4 until the fastener 53 abuts against the clamping member 4. At this time, the low-nitrogen burner body 2 is locked on the mounting seat 3 under the cooperation of the locking assembly 5, the clamping member 4 and the mounting seat 3.

[0031] like Figure 2As shown, an annular sealing groove 521 is provided on the side of the extruded connector 52 away from the clamping member 4, and the sealing member 6 is interference fit in the annular sealing groove 521. The sealing member 6 is used to seal the connection between the extruded connector 52 and the mounting seat 3 to prevent heat from diffusing outward from the gap between the extruded connector 52 and the mounting seat 3 to cause energy waste.

[0032] like Figure 2 As shown, the sealing member 6 is made of asbestos, which has good fire resistance. Using asbestos to make the sealing member 6 can extend the service life of the sealing member 6.

[0033] like Figure 1 and Figure 3 As shown, the fastener 53 is fixed with a first rotating handle 531 and a second rotating handle 532 , which are symmetrically arranged. The first rotating handle 531 and the second rotating handle 532 facilitate the user to rotate the fastener 53 .

[0034] like Figure 1 and Figure 3 As shown, the first rotating handle 531 and the second rotating handle 532 are both provided with anti-slip grooves 7, which prevent the user from slipping when rotating the fastener 53 through the first rotating handle 531 and the second rotating handle 532, making it easier for the user to rotate the fastener 53.

[0035] like Figure 2 As shown, a thermal insulation gasket 8 is provided on the side of the extruded connector 52 away from the clamping member 4, and the connection between the extruded connector 52 and the mounting seat 3 is further sealed by the thermal insulation gasket 8 to effectively prevent heat loss. In this embodiment, the thermal insulation gasket 8 is made of ceramic fiber paper, which is resistant to high temperature, heat-insulating, sealed, fire-proof and flame-retardant.

[0036] like Figure 2 As shown, glass fiber 9 is wound around the low-nitrogen burner body 2, and the glass fiber 9 is located in the through groove 11. The glass fiber 9 is used to seal the gap between the low-nitrogen burner body 2 and the through groove 11, effectively preventing heat from diffusing outward from the gap between the low-nitrogen burner body 2 and the through groove 11.

[0037] Working principle:

[0038] During installation, wrap the combustion end of the low-nitrogen burner body 2 with glass fiber 9, and then insert it into the through groove 11 of the boiler body 1 from the mounting hole 31 of the mounting seat 3, and at the same time put the clip 4 into the clip groove 32, rotate the clip 4 appropriately to stagger the entrance of the clip 4 and prevent the clip 4 from falling out, and then rotate the fastener 53 by the first rotating handle 531 and the second rotating handle 532 to make the fastener 53 gradually approach the clip 4 and press against the clip 4, and at the same time squeeze the connecting piece 52 against the mounting seat 3, and install the low-nitrogen burner body 2 on the mounting seat 3. When disassembly is required, rotate the fastener 53 by the first rotating handle 531 and the second rotating handle 532 to make the fastener 53 gradually move away from the clip 4 and release the abutment against the clip 4, and then rotate the clip 4 and remove the clip 4 from the clip groove 32, and then pull the combustion end of the low-nitrogen burner body 2 out of the through groove 11 and the mounting hole 31.

[0039] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A low nitrogen burner for a heating furnace, characterized in that: It includes a boiler body and a low-nitrogen burner body, the boiler body is provided with a through groove, the outer side of the through groove is fixedly provided with a mounting seat, the mounting seat is provided with a mounting hole connected with the through groove, the mounting seat is provided with a clamping groove on the side away from the boiler body, the outer movable sleeve of the low-nitrogen burner body is provided with a clamping piece matched with the clamping groove, the low-nitrogen burner body is provided with a locking assembly, the locking assembly cooperates with the clamping piece to lock the low-nitrogen burner body on the mounting seat, and a sealing piece is provided at the connection between the locking assembly and the mounting seat.

2. A low nitrogen burner for a heating furnace according to claim 1, characterized in that: The locking assembly includes an external threaded sleeve, an extruded connector and a fastener. The external threaded sleeve is fixedly mounted on the low-nitrogen burner body and is located on a side of the clamping piece away from the boiler body. The extruded connector is fixedly mounted on the burner body and is located on a side of the clamping piece close to the boiler body. The fastener is threadedly connected to the external threaded sleeve and can abut against the clamping piece.

3. A low nitrogen burner for a heating furnace according to claim 2, characterized in that: An annular sealing groove is provided on one side of the extruded connector away from the clamping member, and the sealing member is interference-fittedly arranged in the annular sealing groove.

4. A low nitrogen burner for a heating furnace according to claim 3, characterized in that: The sealing member is made of asbestos.

5. A low nitrogen burner for a heating furnace according to claim 2, characterized in that: The fastener is fixed with a first rotating handle and a second rotating handle, and the first rotating handle and the second rotating handle are symmetrically arranged.

6. A low nitrogen burner for a heating furnace according to claim 5, characterized in that: The first rotating handle and the second rotating handle are both provided with anti-slip patterns.

7. A low nitrogen burner for a heating furnace according to claim 3, characterized in that: A heat insulation gasket is provided on one side of the extruded connector away from the clamping member.

8. The low nitrogen burner for a heating furnace according to claim 1, characterized in that: Glass fibers are wound around the low-nitrogen burner body, and the glass fibers are located in the through grooves.

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