Tunnel furnace inner bore fire tube

Abstract

The utility model relates to the technical field of fire tube, concretely to a tunnel furnace bore fire tube, the fire tube includes the pipe body and the plug, the pipe body is the cylindrical structure with the open inside hollow of both ends, the plug sets up in the arbitrary one end port department of pipe body, and will one port of pipe body seal, forms the fire hole on the pipe body of far away the plug one end, the pipe body is provided with an oval sunken groove along its length direction, is provided with the big fire area and the small fire area in this sunken groove, the big fire area and the small fire area all are set up in the fire hole, the fire hole is linked together with the pipe body inside, the pipe body is provided with a step along the circumference direction of sunken groove. The utility model has the advantages of simple structure, reasonable in design, the installation of convenient user, saves time and labour when installing, adopts the design of big fire area and small fire area simultaneously, and the roasting effect is good.

Description

Technical Field

[0001] This utility model relates to the field of exhaust pipe technology, specifically an exhaust pipe for the inner chamber of a tunnel furnace. Background Technology

[0002] Baking trays are essential in cake and bread production. These trays are typically transported by conveyor belts and baked inside tunnel ovens. Equipment manufacturers usually install conveyor shelves on the oven to facilitate both tray transport and baking. Tunnel ovens typically have internal exhaust pipes that directly contact the baking trays on the conveyor shelves for baking. However, existing internal exhaust pipe designs are inefficient, inconvenient, and time-consuming to install. Furthermore, the limited range vent design results in poor baking performance. To address these issues, the inventor has improved the structure of the tunnel oven's internal exhaust pipe. Utility Model Content

[0003] The purpose of this utility model is to provide a tunnel furnace internal exhaust pipe with the advantages of simple structure, reasonable design, convenient installation for users, saving time and effort during installation, and good baking effect by adopting the design of large fire zone and small fire zone, thus solving the problems mentioned in the above technical background.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tunnel furnace internal exhaust pipe, which includes a pipe body and a plug. The pipe body is a cylindrical structure with openings at both ends and a hollow interior. The plug is located at any one end of the pipe body and seals one end of the pipe body. An inlet hole is formed on the pipe body at the end away from the plug. An elliptical recessed groove is provided on the pipe body along its length. A large fire zone and a small fire zone are provided in the recessed groove. An outlet hole is provided in both the large fire zone and the small fire zone. The outlet hole is connected to the interior of the pipe body. A step is provided on the pipe body along the circumference of the recessed groove.

[0005] Preferably, the pipe body is a steel pipe, and an installation hole is provided on the end of the pipe body near the fire inlet, and the installation hole is a through hole.

[0006] Preferably, the depth of the sinking trough is between 1.8 mm and 2 mm.

[0007] Preferably, multiple flame outlets are provided, and the multiple flame outlets are evenly distributed in the large fire zone and the small fire zone, and the inner diameter of each flame outlet is between 1.5mm and 2mm.

[0008] Preferably, the height of the step is greater than the depth of the sinking trough, and the width of the step is between 8mm and 12mm.

[0009] Preferably, the density of the fire outlets in the large fire zone is greater than the density of the fire outlets in the small fire zone.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model provides a tunnel furnace internal exhaust pipe, which includes a pipe body and a plug. The pipe body is a hollow cylindrical structure with openings at both ends. The plug is located at any one end of the pipe body and seals one end of the pipe body. A fire inlet is formed at the other end of the pipe body. The overall structure is simple and reasonably designed. An elliptical recessed groove is provided along the length of the pipe body. A large fire zone and a small fire zone are set in the recessed groove. Both the large fire zone and the small fire zone are provided with fire outlets. The fire outlets are connected to the fire inlet through the pipe body. In this way, the flames from the fire inlet can be discharged through the fire outlets in the large fire zone and the small fire zone to directly bake the baking tray. The design of large fire zone and small fire zone makes the baking effect better.

[0012] 2. This utility model features an elliptical sinking groove along the length of the tube body, and a step along the circumference of the sinking groove. The height of the step is greater than the depth of the sinking groove, and the width of the step is between 8mm and 12mm. During installation, the step directly contacts the inner cavity of the tunnel furnace and is positioned by the step, thus facilitating installation. At the same time, it is fixed to the inner cavity of the tunnel furnace through the mounting holes, saving time and effort during installation. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention;

[0014] Figure 2 This utility model Figure 1 A magnified view of A in the middle.

[0015] The reference numerals and names in the figure are as follows:

[0016] 1. Pipe body; 11. Sinking groove; 12. Flame outlet; 13. Step; 14. Mounting hole; 15. Large flame zone; 16. Small flame zone; 2. Plug; 3. Flame inlet. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0019] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0020] Please see Figure 1 and Figure 2 This utility model provides an embodiment of a tunnel furnace internal exhaust pipe, which includes a pipe body 1 and a plug 2. The pipe body 1 is a steel pipe and is a cylindrical structure with openings at both ends and a hollow interior. The plug 2 is set at any one end of the pipe body 1 and seals one end of the pipe body 1. An inlet hole 3 is formed on the pipe body 1 at the end away from the plug 2. An elliptical recessed groove 11 is provided on the pipe body 1 along its length direction. A large fire zone 15 and a small fire zone 16 are provided in the recessed groove 11. An outlet hole 12 is opened in both the large fire zone 15 and the small fire zone 16. The outlet hole 12 is connected to the interior of the pipe body 1. A step 13 is provided on the pipe body 1 along the circumference of the recessed groove 11.

[0021] Specifically, the tube body 1 has an installation hole 14 at one end near the fire inlet 3. The installation hole 14 is a through hole. During installation, the tube body 1 is installed in the tunnel furnace through the installation hole 14 and screws (not shown in the figure).

[0022] Specifically, the depth of the sinking trough 11 is between 1.8 mm and 2 mm.

[0023] Specifically, multiple flame outlet holes 12 are provided, and the multiple flame outlet holes 12 are evenly distributed in the large fire zone 15 and the small fire zone 16. The inner diameter of each flame outlet hole 12 is between 1.5mm and 2mm.

[0024] Specifically, the height of the step 13 is greater than the depth of the sinking trough 11, and the width of the step 13 is between 8mm and 12mm.

[0025] Specifically, the density value of the fire outlet holes 12 in the large fire zone 15 is greater than the density value of the fire outlet holes 12 in the small fire zone 16.

[0026] Please refer to it again. Figure 1 and Figure 2 In this utility model, the exhaust pipe of the tunnel furnace is positioned by a step 13 during installation. The step 13 is designed to be a smooth plane, increasing its contact area with the inner chamber of the tunnel furnace and making it more stable after installation. The pipe 1 is then fixed to the inner chamber of the tunnel furnace using mounting holes 14 and screws (not shown in the figure). During use, the fire inlet 3 is connected to a fire source (not shown in the figure), allowing the flame to enter the pipe 1 through the fire inlet 3 and then exit through the fire outlets 12 on the large fire zone 15 and small fire zone 16 to bake the baking tray (not shown in the figure). It should be noted that the fire source in this embodiment can be a natural gas fire source or a liquefied petroleum gas fire source.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tunnel furnace internal exhaust pipe, characterized in that: The tube (1) includes a tube body (1) and a plug (2). The tube body (1) is a cylindrical structure with openings at both ends and a hollow interior. The plug (2) is located at any one end of the tube body (1) and seals one end of the tube body (1). A fire inlet (3) is formed on the tube body (1) at the end away from the plug (2). An elliptical sinkhole (11) is provided on the tube body (1) along its length. A large fire zone (15) and a small fire zone (16) are provided in the sinkhole (11). Fire outlet holes (12) are provided in both the large fire zone (15) and the small fire zone (16). The fire outlet holes (12) are connected to the interior of the tube body (1). A step (13) is provided on the tube body (1) along the circumference of the sinkhole (11).

2. The tunnel furnace internal exhaust pipe according to claim 1, characterized in that: The pipe body (1) is a steel pipe, and an installation hole (14) is provided on the end of the pipe body (1) near the fire inlet (3). The installation hole (14) is a through hole.

3. The tunnel furnace internal exhaust pipe according to claim 1, characterized in that: The depth of the sinking trough (11) is between 1.8 mm and 2 mm.

4. The tunnel furnace internal exhaust pipe according to claim 1, characterized in that: The fire outlet (12) is provided in multiple ways, and the multiple fire outlets (12) are evenly distributed in the large fire zone (15) and the small fire zone (16). The inner diameter of each fire outlet (12) is between 1.5mm and 2mm.

5. The tunnel furnace internal exhaust pipe according to claim 1, characterized in that: The height of the step (13) is greater than the depth of the sinking trough (11), and the width of the step (13) is between 8mm and 12mm.

6. The tunnel furnace internal exhaust pipe according to claim 1, characterized in that: The density value of the fire outlet (12) in the large fire zone (15) is greater than the density value of the fire outlet (12) in the small fire zone (16).

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