Low-nitrogen oxygen burner for tunnel kiln

Abstract

The utility model relates to the field of tunnel kiln combustors, in particular to a low-nitrogen-oxygen combustor for a tunnel kiln, which comprises a kiln wall, a fixing cylinder, a combustor and a fixing mechanism, a through hole is formed in the kiln wall, the fixing cylinder is inserted into the through hole and fixed with the kiln wall, the combustor is inserted into the fixing cylinder, the combustor is slidably connected with the fixing cylinder, and the fixing mechanism is arranged on the outer wall of the kiln wall. The fixing mechanism is used for fixing the combustor. The tunnel kiln has the effect that a user can conveniently control the heating temperature of workpieces in the tunnel kiln.

Description

Technical Field

[0001] This application relates to the field of tunnel kiln burners, and more particularly to a low-NOx burner for tunnel kilns. Background Technology

[0002] A tunnel kiln is a modern thermal equipment consisting of kiln cars inside a furnace constructed from refractory, insulation, and building materials. Tunnel kilns are widely used in the firing of ceramic products and also have applications in metallurgical industries such as abrasives.

[0003] The existing tunnel kiln includes a kiln wall and multiple burners. The burners penetrate the kiln wall, with a conduit connected to one end and a nozzle installed at the other end. The conduit is located outside the tunnel kiln, while the nozzle is located inside the tunnel kiln. The conduit is used to supply air and fuel to the burners. After the burners ignite the fuel, flames are ejected from the nozzles, thereby increasing the temperature inside the tunnel kiln and heating the workpieces inside the tunnel kiln.

[0004] The aforementioned technical solutions have the following drawbacks: the temperature inside the tunnel kiln has a significant impact on the forming quality of the workpiece, and it is difficult for operators to control the temperature of the workpiece inside the tunnel kiln. Utility Model Content

[0005] To facilitate user control of the heating temperature of workpieces inside a tunnel kiln, this application provides a low-NOx burner for tunnel kilns.

[0006] The low-NOx burner for tunnel kilns provided in this application adopts the following technical solution:

[0007] A low-NOx burner for a tunnel kiln includes a kiln wall, a fixed cylinder, a burner, and a fixing mechanism. The kiln wall has a through hole, the fixed cylinder is inserted into the through hole and fixed to the kiln wall, the burner is inserted into the fixed cylinder, and the burner is slidably connected to the fixed cylinder. The fixing mechanism is set on the outer wall of the kiln wall and is used to fix the burner.

[0008] By adopting the above technical solution, a fixed cylinder is set on the kiln wall, allowing the burner to slide inside the fixed cylinder. The user can adjust the distance between the burner and the workpiece inside the tunnel kiln, thereby adjusting the processing temperature of the workpiece. A fixing mechanism is set on the outside of the kiln wall, which can be used to fix one end of the burner located outside the kiln wall, thus facilitating the control of the burner's position.

[0009] Optionally, the burner is provided with an adjusting rod, which is perpendicular to the burner and located outside the kiln wall. The fixing mechanism includes a vertical frame and multiple brackets. The vertical frame is parallel to the length direction of the burner and is fixed to the outer wall of the kiln. The brackets are horizontally arranged and spaced along the length direction of the vertical frame. The brackets are used to support the adjusting rod.

[0010] By adopting the above technical solution, by setting an adjustment rod on the burner, the user can move the burner by moving the adjustment rod. By setting multiple brackets on the vertical frame, the user can rotate the adjustment rod to hang it on the bracket, thereby fixing the position of the burner.

[0011] Optionally, the bracket is provided with a locking rod, which is vertically fixed to the bracket.

[0012] By adopting the above technical solution, and by setting a locking rod on the bracket, when the adjusting rod rotates and is hung on the bracket, the locking rod can lock onto one side of the adjusting rod, thereby reducing the probability of the burner vibrating and becoming disconnected from the fixing mechanism during operation, and ensuring that the adjusting rod can always remain connected to the fixing mechanism.

[0013] Optionally, the clamping rod is provided with a mounting rod, which is parallel to the length direction of the bracket. A rotating rod is rotatably connected to the mounting rod, which is used for unidirectional rotation and to lock the adjusting rod.

[0014] By adopting the above technical solution, an installation rod is set on the clamping rod, and a rotating rod is set on the installation rod. The lower end of the rotating rod abuts against the protrusions on other clamping rods. When the adjusting rod rotates and abuts against the rotating rod, the rotating rod is stuck on the protrusion and is difficult to rotate. When the adjusting rod is set on the bracket, the rotating rod and the clamping rod can be located on both sides of the adjusting rod, so that the adjusting rod is difficult to rotate and can be disengaged from the fixing mechanism. When it is necessary to move the adjusting rod, the user rotates the rotating rod in the direction close to the adjusting rod, so that the rotating rod can rotate and be located above the adjusting rod. At this time, the adjusting rod can be disengaged from the fixing mechanism.

[0015] Optionally, the mounting rod is provided with a rotating shaft, the rotating shaft is horizontally positioned, the rotating rod is rotatably connected to the rotating shaft, and the rotating rod is slidably connected to the rotating shaft.

[0016] By adopting the above technical solution, a rotating shaft is set on the mounting rod, allowing the rotating rod to slide on the rotating shaft. When the user needs to move the adjusting rod, the rotating rod can be moved away from the adjusting rod by sliding the rotating rod. At this time, the user can rotate the rotating rod, thereby lifting the rotating rod, allowing the adjusting rod to rotate and be removed from the fixing mechanism.

[0017] Optionally, one end of the burner is connected to a conduit, and the other end is connected to a nozzle, with the nozzle facing at an angle to the burner.

[0018] By adopting the above technical solution, by installing conduits on the burner to supply air and fuel to the burner, the burner nozzles can spray flames to heat the workpieces inside the tunnel kiln. By setting nozzles with different orientations at different positions inside the tunnel kiln, the nozzles can heat the workpieces evenly, thereby improving the uniformity of heating on the workpieces.

[0019] Optionally, the burner is rotatably connected to the fixed cylinder, and multiple fixing mechanisms are provided on the outside of the burner, with the fixing mechanisms being equidistantly spaced along the circumference of the burner.

[0020] By adopting the above technical solution, and by rotatably connecting the burner to the fixed cylinder, the user can install the adjustment rod on the fixed mechanism at different positions, thereby achieving the effect of adjusting the nozzle orientation.

[0021] Optionally, a sleeve is provided on the fixed cylinder, the sleeve is fixedly connected to the fixed cylinder and slidably connected to the burner, and an air inlet pipe is provided on the sleeve, the air inlet pipe passes through the sleeve and is sealed to the sleeve.

[0022] By adopting the above technical solution, by setting a sleeve on the fixed cylinder, the sleeve can wrap around the end of the fixed cylinder, thereby reducing the probability of high-temperature gas in the tunnel kiln escaping from between the fixed cylinder and the burner, and reducing the probability of burns to the users. By setting an air inlet pipe on the sleeve, the users can introduce high-pressure air into the sleeve through the air inlet pipe, so that air can enter the tunnel kiln from the gap between the fixed cylinder and the burner, further reducing the emission of high-temperature harmful gases in the tunnel kiln.

[0023] In summary, the beneficial technical effects of this application are as follows:

[0024] 1. By setting a fixed cylinder on the kiln wall, the burner can slide inside the fixed cylinder, and the operator can adjust the distance between the burner and the workpiece inside the tunnel kiln, thereby adjusting the processing temperature of the workpiece. By setting a fixing mechanism outside the kiln wall, the fixing mechanism can be used to fix one end of the burner outside the kiln wall, thereby facilitating the control of the burner's position.

[0025] 2. By setting a pivot on the mounting rod, the rotating rod can slide on the pivot. When the user needs to move the adjusting rod, the rotating rod can be moved away from the adjusting rod by sliding the rotating rod. At this time, the user can rotate the rotating rod, thereby lifting the rotating rod, and the adjusting rod can be rotated and removed from the fixing mechanism.

[0026] 3. By installing a sleeve on the fixed cylinder, the sleeve can wrap around the end of the fixed cylinder, thereby reducing the probability of high-temperature gas escaping from between the fixed cylinder and the burner in the tunnel kiln, and reducing the probability of burns to the user. By installing an air inlet pipe on the sleeve, the user can introduce high-pressure air into the sleeve through the air inlet pipe, so that air can enter the tunnel kiln from the gap between the fixed cylinder and the burner, further reducing the emission of high-temperature harmful gases in the tunnel kiln. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 1 .

[0028] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 2 .

[0029] Figure 3 This is a schematic diagram of the fixing mechanism according to an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the burner structure according to an embodiment of this application.

[0031] Attached reference numerals: 1. Kiln wall; 2. Fixing cylinder; 3. Burner; 31. Conduit; 32. Nozzle; 33. Adjusting rod; 4. Fixing mechanism; 41. Vertical frame; 42. Bracket; 43. Clamping rod; 44. Mounting rod; 45. Rotating rod; 46. Rotating shaft; 5. Sleeve; 51. Air inlet pipe. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] This application discloses a low-NOx burner for tunnel kilns, referring to... Figure 1 and Figure 2 The kiln includes a kiln wall 1, a fixed cylinder 2, a burner 3, and a fixing mechanism 4. The kiln wall 1 has a through hole. The fixed cylinder 2 is a high-temperature resistant metal cylinder. The fixed cylinder 2 is inserted into the through hole of the kiln wall 1 and is fixedly connected to the kiln wall 1. The burner 3 is inserted into the fixed cylinder 2. The burner 3 is used to spray flames and heat the workpieces in the tunnel kiln. The fixing mechanism 4 is set on the kiln wall 1. The fixing mechanism 4 is used to fix the burner 3. The burner 3 can slide inside the fixed cylinder 2, so that the user can easily adjust the distance between the burner 3 and the workpiece, thereby controlling the heating quality of the workpiece.

[0034] Reference Figure 1 The burner 3 has a cylindrical structure. One end of the burner 3 is fitted with a conduit 31, and the other end with a nozzle 32. The side of the burner 3 with the nozzle 32 is inserted into the fixed cylinder 2 and located inside the tunnel kiln. The conduit 31 is located outside the tunnel kiln and is used to transport air and fuel, enabling continuous combustion in the burner 3. The fixing mechanism 4 is located outside the tunnel kiln. The fixing mechanism 4 adjusts the distance between the burner 3 and the workpiece inside the tunnel kiln by fixing the end of the burner 3 connected to the conduit 31.

[0035] Reference Figure 3An adjusting rod 33 is provided on the burner 3. The length direction of the adjusting rod 33 is perpendicular to the burner 3. A fixing mechanism 4 is used to fix the adjusting rod 33. The fixing mechanism 4 includes a vertical frame 41 and multiple brackets 42. The vertical frame 41 is fixed to the kiln wall 1, and the length direction of the vertical frame 41 is parallel to the length direction of the burner 3. Multiple brackets 42 are fixed on the vertical frame 41 and are perpendicular to the vertical frame 41. The multiple brackets 42 are spaced apart along the length direction of the vertical frame 41. When the user rotates the adjusting rod 33, the adjusting rod 33 can be locked onto the brackets 42 at different positions, thereby achieving the effect of fixing the burner 3.

[0036] Reference Figure 4 In other embodiments, the nozzle 32 is angled relative to the burner 3 body, allowing the user to adjust the orientation of the nozzle 32 by rotating the adjusting rod 33. In other embodiments, multiple fixing mechanisms 4 are provided on the outside of the burner 3, equidistantly spaced along the circumference of the burner 3. By rotating the adjusting rod 33 and mounting it on different fixing mechanisms 4, the user can adjust the orientation of the nozzle 32 and keep the burner 3 fixed.

[0037] Reference Figure 3 A locking rod 43 is fixed on the bracket 42. The locking rod 43 is parallel to the vertical frame 41. The lower end of the locking rod 43 is fixedly connected to the bracket 42. When the adjusting rod 33 is locked on the bracket 42, the locking rod 43 can lock the adjusting rod 33, thereby reducing the probability of the burner 3 rotating due to vibration during operation, and further reducing the probability of the burner 3 disengaging from the fixing mechanism 4.

[0038] Reference Figure 3 A mounting rod 44 is connected to the upper end of the locking rod 43. The mounting rod 44 is parallel to the bracket 42. When the adjusting rod 33 is locked onto the fixing mechanism 4, the adjusting rod 33 is located between the mounting rod 44 and the bracket 42. A rotating shaft 46 is fixed on the mounting rod 44. The rotating shaft 46 is horizontally set and perpendicular to the mounting rod 44. A rotating rod 45 is rotatably connected to the rotating shaft 46. One end of the rotating rod 45 is rotatably connected to the rotating shaft 46, and the other end is used to lock onto an adjacent rotating shaft 46. The user needs to rotate the rotating rod 45 to move the adjusting rod 33, further reducing the probability of the burner 3 detaching from the fixing mechanism 4 during operation. The rotating rod 45 can slide along the length of the rotating shaft 46. The user can slide the rotating rod 45 away from the adjusting rod 33, at which point the rotating rod 45 can rotate, making it convenient to use.

[0039] Reference Figure 1A sleeve 5 is provided on the fixed cylinder 2. The sleeve 5 is fitted around the burner 3 and rotatably connected to the burner 3. An air inlet pipe 51 is connected to the sleeve 5. One end of the air inlet pipe 51 passes through the sleeve 5, and the other end is connected to an air pump. The air inlet pipe 51 is used to introduce air into the sleeve 5, so that air can enter the tunnel kiln from the gap between the fixed cylinder 2 and the burner 3. By introducing high-pressure gas into the sleeve 5, the probability of high-temperature gas in the tunnel kiln can be reduced, and the probability of burns to users can be reduced.

[0040] The implementation principle of this application embodiment is as follows: by setting a fixed cylinder 2 on the kiln wall 1, and setting a burner 3 inside the fixed cylinder 2, the burner 3 can slide and rotate inside the fixed cylinder 2, thereby facilitating the user to adjust the position and orientation of the nozzle 32. By fixing the adjusting rod 33 at different positions in the fixing mechanism 4, the burner 3 can be fixed.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A low-NOx burner for tunnel kilns, characterized in that: It includes a kiln wall (1), a fixed cylinder (2), a burner (3) and a fixing mechanism (4). The kiln wall (1) has a through hole. The fixed cylinder (2) is inserted into the through hole and fixed to the kiln wall (1). The burner (3) is inserted into the fixed cylinder (2) and is slidably connected to the fixed cylinder (2). The fixing mechanism (4) is set on the outer wall of the kiln wall (1) and is used to fix the burner (3).

2. The low-NOx burner for tunnel kilns according to claim 1, characterized in that: The burner (3) is provided with an adjusting rod (33), which is perpendicular to the burner (3) and located outside the kiln wall (1). The fixing mechanism (4) includes a vertical frame (41) and multiple brackets (42). The vertical frame (41) is parallel to the length direction of the burner (3) and is fixed on the outer wall of the kiln wall (1). The brackets (42) are horizontally arranged and spaced along the length direction of the vertical frame (41). The brackets (42) are used to support the adjusting rod (33).

3. A low-NOx burner for a tunnel kiln according to claim 2, characterized in that: The bracket (42) is provided with a locking rod (43), which is vertically fixed on the bracket (42).

4. A low-NOx burner for a tunnel kiln according to claim 3, characterized in that: The clamp (43) is provided with an installation rod (44), which is parallel to the length direction of the bracket (42). A rotating rod (45) is rotatably connected to the installation rod (44), which is used to rotate in one direction and lock the adjustment rod (33).

5. A low-NOx burner for a tunnel kiln according to claim 4, characterized in that: The mounting rod (44) is provided with a rotating shaft (46), which is horizontally positioned. The rotating rod (45) is rotatably connected to the rotating shaft (46) and slidably connected to the rotating shaft (46).

6. A low-NOx burner for a tunnel kiln according to claim 2, characterized in that: The burner (3) is connected to a conduit (31) at one end and a nozzle (32) at the other end. The nozzle (32) is oriented at an angle to the burner (3).

7. A low-NOx burner for a tunnel kiln according to claim 6, characterized in that: The burner (3) is rotatably connected to the fixed cylinder (2), and multiple fixing mechanisms (4) are provided on the outside of the burner (3). The fixing mechanisms (4) are equidistantly spaced along the circumference of the burner (3).

8. A low-NOx burner for a tunnel kiln according to claim 7, characterized in that: A sleeve (5) is provided on the fixed cylinder (2). The sleeve (5) is fixedly connected to the fixed cylinder (2) and slidably connected to the burner (3). An air inlet pipe (51) is provided on the sleeve (5). The air inlet pipe (51) passes through the sleeve (5) and is sealed to the sleeve (5).

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