Tunnel kiln hot air recycling equipment

Abstract

The utility model discloses tunnel kiln hot air recycling equipment which comprises a preheating box, a partition plate is arranged in the preheating box, a motor is installed on one side of the surface of the bottom of the partition plate, the output end of the motor is fixedly connected with a second gear, a shaft seat is arranged in the middle of the upper surface of the bottom end of the preheating box, and a rotating rod is arranged in the shaft seat. The top end of the rotating rod penetrates through the partition plate and is provided with a containing disc. According to the utility model, the box door is opened, green bricks to be processed are placed on the placing disc in the preheating box, the box door is closed, the exhaust fan on the top surface of the tunnel kiln body is opened, the exhaust fan conveys hot air in the tunnel kiln body into the preheating box through the air conveying pipe by virtue of the exhaust pipe, and the hot air is blown out through the air outlet in the top surface of the preheating box; by arranging the preheating box on the tunnel kiln body, green bricks in the preheating box can be preheated, so that hot air generated when the tunnel kiln body is used can be recycled, waste of heat resources is reduced, and the practicability of the tunnel kiln is improved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel kiln technology, and in particular to a tunnel kiln hot air circulation device. Background Technology

[0002] A tunnel kiln is a kiln similar to a tunnel, constructed from refractory, insulation, and building materials and containing kiln cars and other transport vehicles. It is a modern, continuous firing thermal equipment. Tunnel kilns are widely used in the firing of ceramic products and are also applied in metallurgical industries such as abrasives. As a continuous kiln, tunnel kilns have good heat utilization, short production cycles, high output, and high quality.

[0003] The existing Chinese patent, CN211668251U, discloses a tunnel kiln for refractory bricks. The key technical points of its solution are: it includes a kiln body, a track within the kiln body, and kiln cars that slide along the track. The track includes a first track section and a second track section located at the open-flame firing position within the kiln body. The second track section is positioned higher than the first track section. The bottom of the kiln car is equipped with first and second rollers. During the preheating stage of the tunnel kiln, the kiln car moves on the first track section, with a relatively small distance between the kiln car and the ground. When the kiln car reaches the firing position, it moves onto the second track section, which is vertically higher, increasing the distance between the kiln car and the ground. This allows the flame to enter from the bottom of the kiln car, increasing the contact area between the semi-finished refractory bricks and the flame, thus facilitating firing. Because the space at the bottom of the kiln car is larger, more air can be supplied for the flame to burn, resulting in more uniform heating of the refractory bricks.

[0004] The existing technical solutions mentioned above have the following drawbacks. Although the above technical solutions facilitate the entry of flames from the bottom of the kiln car, increase the contact area between the fireproof brick semi-finished product and the flame, and facilitate firing, the hot air generated during firing is directly discharged without being recycled, which easily leads to a waste of heat resources. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a tunnel kiln hot air recycling device, which has the advantages of recycling the hot air generated during firing, preheating the brick blanks to be fired, reducing resource waste, and thus solving the problems mentioned in the background technology.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a tunnel kiln hot air circulation device, comprising a preheating box, wherein the preheating box is provided with a partition, and a motor is installed on one side of the bottom surface of the partition. The output end of the motor is fixedly connected to a second gear. A shaft seat is provided at the middle position of the upper surface of the bottom end of the preheating box, and a rotating rod is provided in the shaft seat. The top end of the rotating rod passes through the partition and is provided with a placement plate, and the top surface of the placement plate is provided with a through hole. The second gear meshes with a first gear provided on the rotating rod. An air outlet is provided on the lower surface of the bottom end of the preheating box. A tunnel kiln body is provided on one side of the preheating box, and an exhaust fan is installed on one side of the top surface of the tunnel kiln body. The exhaust fan is connected to the tunnel kiln body through an exhaust pipe, and the exhaust fan is connected to the air outlet through an air supply pipe. A fan blade is provided on the rotating rod above the partition.

[0009] Preferably, the preheating box has through openings on both sides.

[0010] Preferably, the front surface of the preheating box is provided with a door, and a maintenance plate is provided below the door.

[0011] Preferably, the box door is hinged to the preheating box via a hinge.

[0012] Preferably, the inspection plate is fixedly connected to the preheating box by screws.

[0013] Preferably, the two sides of the placement tray are provided with limiting blocks, and one end of the limiting block extends into the interior of the limiting groove opened around the inner wall of the preheating box.

[0014] Preferably, there are multiple through holes, and the multiple through holes are evenly distributed on the top surface of the placement tray, and the placement tray is matched with the preheating box.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a tunnel kiln hot air recycling device, which has the following beneficial effects:

[0017] (1) In this utility model, the box door is opened, the brick blank to be processed is placed on the placement tray in the preheating box, the box door is closed, and the exhaust fan on the top surface of the tunnel kiln body is turned on. The exhaust fan transports the hot air in the tunnel kiln body to the preheating box through the exhaust pipe and the air supply pipe. The hot air is blown out through the air outlet on the top surface of the preheating box, so that the brick blank in the preheating box can be preheated. In this way, the hot air generated by the tunnel kiln body during use can be recycled, reducing the waste of heat resources and improving its practicality. The motor on the bottom surface of the partition drives the second gear to rotate. At the same time, the second gear drives the first gear on the rotating rod to rotate, so that the placement tray at the top of the rotating rod rotates. This allows the brick blank on the placement tray to fully contact the hot air in the preheating box, so that the brick blank is heated evenly and the preheating effect of the brick blank is improved.

[0018] (2) In this utility model, the second gear is driven by the motor to rotate, so that the rotating rod rotates. At the same time as the rotating rod rotates, the fan blades on the rotating rod can rotate synchronously with the rotating rod. By using the fan blades, the cold air in the preheating box can be discharged from the opening, so that the hot air can be fully distributed in the preheating box, so that the hot air can fully contact the brick blank, further improving the preheating effect of the brick blank. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a tunnel kiln hot air recycling device proposed in this utility model;

[0021] Figure 2 This is a front view of a tunnel kiln hot air recycling device proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the preheating box structure of a tunnel kiln hot air recycling device proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the placement tray structure of a tunnel kiln hot air recycling device proposed in this utility model.

[0024] Legend:

[0025] 1. Preheating box; 2. Placement tray; 3. Limiting groove; 4. Limiting block; 5. Through port; 6. Partition plate; 7. First gear; 8. Shaft seat; 9. Rotating rod; 10. Second gear; 11. Motor; 12. Fan blade; 13. Air outlet; 14. Air conveying pipe; 15. Exhaust fan; 16. Exhaust pipe; 17. Tunnel kiln body; 18. Box door; 19. Inspection plate; 20. Through hole. Detailed Implementation

[0026] 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.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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 this utility model and simplifying the description, and 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; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, 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 an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] Please refer to Figure 1-4A tunnel kiln hot air circulation device includes a preheating box 1. The preheating box 1 has a partition 6 inside, and a motor 11 is installed on one side of the bottom surface of the partition 6. A second gear 10 is fixedly connected to the output end of the motor 11. A shaft seat 8 is located at the middle of the upper bottom surface of the preheating box 1, and a rotating rod 9 is located in the shaft seat 8. The top of the rotating rod 9 passes through the partition 6 and has a placement plate 2. A through hole 20 is provided on the top surface of the placement plate 2. The second gear 10 meshes with a first gear 7 on the rotating rod 9. An air outlet 13 is located on the lower bottom surface of the preheating box 1. A tunnel kiln body 17 is located on one side of the preheating box 1, and an exhaust fan 15 is installed on one side of the top surface of the tunnel kiln body 17. The exhaust fan 15 is connected to the tunnel kiln body 17 through an exhaust pipe 16 and to the air outlet 13 through an air supply pipe 14. A fan blade 12 is located on the rotating rod 9 above the partition 6. The device allows the process of opening the box door 18 to allow the process of... The brick blanks are placed on the placement tray 2 in the preheating box 1. The box door 18 is closed, and the exhaust fan 15 on the top surface of the tunnel kiln body 17 is turned on. The exhaust fan 15 transports the hot air in the tunnel kiln body 17 to the preheating box 1 through the exhaust pipe 16 and the air supply pipe 14. The hot air is blown out through the air outlet 13 on the top surface of the preheating box 1, which can preheat the brick blanks in the preheating box 1. This allows the hot air generated by the tunnel kiln body 17 during use to be recycled, reducing the waste of heat resources and improving its practicality. The motor 11 on the bottom surface of the partition 6 drives the second gear 10 to rotate. The rotation of the second gear 10 drives the first gear 7 on the rotating rod 9 to rotate, so that the placement tray 2 at the top of the rotating rod 9 rotates. This allows the brick blanks on the placement tray 2 to fully contact the hot air in the preheating box 1, which facilitates uniform heating of the brick blanks and improves the preheating effect of the brick blanks.

[0029] In one embodiment, openings 5 ​​are provided through both sides of the preheating box 1, through which cold air in the preheating box 1 can be discharged, so that hot air can be fully distributed in the preheating box 1.

[0030] In one embodiment, the front surface of the preheating box 1 is provided with a door 18, and a maintenance plate 19 is provided below the door 18.

[0031] In one embodiment, the box door 18 is hinged to the preheating box 1, wherein the brick blanks can be placed or removed by opening the box door 18.

[0032] In one embodiment, the inspection plate 19 is fixedly connected to the preheating box 1 by screws. By loosening the screws and removing the inspection plate 19, the components in the preheating box 1 can be maintained and repaired.

[0033] In one embodiment, limiting blocks 4 are provided on both sides of the placement tray 2, and one end of the limiting block 4 extends into the interior of the limiting groove 3 opened around the inner wall of the preheating box 1. The placement tray 2 can be limited by the use of the limiting block 4 and the limiting groove 3, so as to maintain the stability of the placement tray 2 during rotation.

[0034] In one embodiment, a plurality of through holes 20 are provided, and the plurality of through holes 20 are evenly distributed on the top surface of the placement tray 2. The placement tray 2 is matched with the preheating box 1, wherein the use of the through holes 20 allows hot air to circulate in the preheating box 1.

[0035] In one embodiment, the control circuit of the control panel can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. It is only used and not modified, so the control method and circuit connection will not be described in detail.

[0036] Working principle:

[0037] In use, open the box door 18, place the brick blanks to be processed on the placement tray 2 in the preheating box 1, close the box door 18, and turn on the exhaust fan 15 on the top surface of the tunnel kiln body 17. The exhaust fan 15 transports the hot air in the tunnel kiln body 17 to the preheating box 1 through the exhaust pipe 16 and the air conveying pipe 14. The hot air is blown out through the air outlet 13 on the top surface of the preheating box 1, which can preheat the brick blanks in the preheating box 1. This allows the hot air generated by the tunnel kiln body 17 during use to be recycled, reducing the waste of heat resources and improving its practicality. The second gear 10 is driven to rotate by the motor 11 on the bottom surface of the partition 6. Simultaneously, the first gear 7 on the rotating rod 9 rotates, causing the placement plate 2 at the top of the rotating rod 9 to rotate. This allows the brick blanks on the placement plate 2 to fully contact the hot air in the preheating box 1, thus facilitating uniform heating of the brick blanks and improving the preheating effect. The second gear 10 is driven by the motor 11 to rotate, causing the rotating rod 9 to rotate. As the rotating rod 9 rotates, the fan blades 12 on the rotating rod 9 rotate synchronously. Through the use of the fan blades 12, the cold air in the preheating box 1 is discharged from the opening 5, so that the hot air is fully distributed in the preheating box 1, allowing the hot air to fully contact the brick blanks, further improving the preheating effect of the brick blanks.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tunnel kiln hot air recycling device, comprising a preheating box (1), characterized in that, The preheating box (1) is equipped with a partition (6) inside, and a motor (11) is installed on one side of the bottom surface of the partition (6). The output end of the motor (11) is fixedly connected to a second gear (10). A bearing seat (8) is provided at the middle position of the bottom upper surface of the preheating box (1), and a rotating rod (9) is provided in the bearing seat (8). The top end of the rotating rod (9) passes through the partition (6) and is provided with a placement plate (2). A through hole (20) is provided through the top surface of the placement plate (2). The second gear (10) and the rotating rod (9) are connected. The first gear (7) is engaged, and the bottom surface of the preheating box (1) is provided with an air outlet (13). The preheating box (1) is provided with a tunnel kiln body (17) on one side, and an exhaust fan (15) is installed on one side of the top surface of the tunnel kiln body (17). The exhaust fan (15) is connected to the tunnel kiln body (17) through an exhaust pipe (16), and the exhaust fan (15) is connected to the air outlet (13) through an air supply pipe (14). The rotating rod (9) is provided with a fan blade (12) above the partition plate (6).

2. The tunnel kiln hot air recycling equipment according to claim 1, characterized in that, The preheating box (1) has through openings (5) on both sides.

3. The tunnel kiln hot air recycling equipment according to claim 1, characterized in that, The preheating box (1) has a door (18) on its front surface and a maintenance plate (19) below the door (18).

4. The tunnel kiln hot air recycling equipment according to claim 3, characterized in that, The box door (18) is hinged to the preheating box (1) via a hinge.

5. A tunnel kiln hot air recycling device according to claim 3, characterized in that, The inspection plate (19) is fixedly connected to the preheating box (1) by screws.

6. The tunnel kiln hot air recycling equipment according to claim 1, characterized in that, The two sides of the placement tray (2) are provided with limiting blocks (4), and one end of the limiting block (4) extends into the interior of the limiting groove (3) opened around the inner wall of the preheating box (1).

7. The tunnel kiln hot air recycling equipment according to claim 1, characterized in that, The through holes (20) are provided in multiple ways, and the multiple through holes (20) are evenly distributed on the top surface of the placement plate (2), which is matched with the preheating box (1).

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