A highly efficient and energy-saving infrared hot air circulation tunnel furnace

Abstract

The present invention belongs to the technical field of circulating tunnel furnaces, and specifically relates to an efficient and energy-saving infrared belt hot air circulating tunnel furnace, which includes a furnace body and a variable speed hot air blower and a power shaft inside the furnace body, a conveying crawler driven by the power shaft is installed inside the furnace body, the variable speed hot air blower is connected to an air outlet, and the air outlet is connected to the conveying crawler through an adjustment component; the adjustment component includes a concave plate and a moving rod, the concave plate is provided with a groove, one end of the moving rod is in contact with the groove, and the other end of the moving rod is connected to the air outlet through a transmission rod; a heat storage clamping component is installed on the conveying crawler. The present invention can adjust the air outlet through the adjustment component, so that the air outlet is aligned with adjacent baking items, and improve the heat utilization rate when the air outlet is facing the gap between the conveying crawlers.

Description

Technical Field

[0001] The invention belongs to the technical field of circulation tunnel furnaces, and in particular relates to an efficient and energy-saving infrared hot air circulation tunnel furnace. Background Art

[0002] The hot air circulation tunnel oven is a highly efficient and energy-saving equipment, which is widely used in many industries such as electronics, food and pharmaceuticals. The tunnel oven can complete food baking and electronic semiconductor baking through heat conduction, convection and radiation. Specifically, the objects are transported into the tunnel oven through the conveyor belt, and the hot air blower and infrared electric heating elements are used to complete the baking work. It can produce continuously, has high production efficiency, saves manpower, and has stable drying quality.

[0003] The furnace body of the existing tunnel furnace is generally very long, with a minimum of 6 meters and a maximum of 60 to 80 meters. Therefore, the heat utilization rate of the tunnel furnace has a great influence on the energy consumption of the tunnel furnace. Generally, the hot air inside the furnace body heats the material mainly by blowing from top to bottom. For example, the Chinese patent with publication number: CN212362749U mainly heats the workpiece by blowing air into the heating box through an exhaust fan. Since there are gaps between the workpieces on the conveyor belt and the air outlet of the fan is fixed, as the workpieces on the belt move, the fan will alternately blow to the gaps between the workpieces. When the fan blows to the gaps between the workpieces, the hot air cannot effectively heat the workpieces, resulting in poor heat utilization. If the distance between the workpieces on the conveyor belt is reduced, it cannot be guaranteed that the workpieces are evenly baked. Summary of the invention

[0004] The purpose of the present invention is to provide a high-efficiency and energy-saving infrared hot air circulation tunnel furnace to solve the technical problems in the prior art.

[0005] The purpose of the present invention can be achieved through the following technical solutions: an efficient and energy-saving infrared belt hot air circulation tunnel furnace, which includes a furnace body and a variable speed hot air blower and a power shaft therein, a conveying crawler driven by the power shaft is installed inside the furnace body, the variable speed hot air blower is connected to the air outlet, and the air outlet is connected to the conveying crawler through an adjustment component;

[0006] The adjustment assembly includes a concave plate and a moving rod, wherein the concave plate is provided with a groove, one end of the moving rod is in contact with the groove, and the other end of the moving rod is connected to the air outlet through a transmission rod;

[0007] A heat storage clamping assembly is installed on the conveying crawler, and the heat storage clamping assembly includes a heat storage box, and air inlets are opened on both sides of the heat storage box, and the air inlets on both sides of the heat storage box are blocked by telescopic blocking plate 2 and telescopic blocking plate 1 respectively, and telescopic blocking plate 2 and telescopic blocking plate 1 are rotatably connected to the heat storage box, and a vent hole is opened on the top of the heat storage box, telescopic blocking plate 2 is connected to storage rod 2 through connecting rod 2, and telescopic blocking plate 1 is connected to storage rod 1 through connecting rod 1, and storage rod 2 and storage rod 1 are respectively slidably matched with the heat storage box.

[0008] As a further optimization or improvement of this solution, the heat storage clamping assembly also includes a rotating shaft, a connecting groove is opened on the heat storage box, a rotating shaft is installed in the connecting groove, the rotating shaft is connected to the inner side wall of the connecting groove through a connecting spring, and the second storage rod and the first storage rod are respectively slidably matched with the rotating shaft.

[0009] As a further optimization or improvement of this solution, the connecting rod 1 and the connecting rod 2 are respectively connected to the heat storage tank through a return spring.

[0010] As a further optimization or improvement of the present solution, push blocks are fixedly mounted on the storage rod 1 and the storage rod 2, and the push blocks on the storage rod 1 and the storage rod 2 abut against the connecting rod 1 and the connecting rod 2 respectively.

[0011] As a further optimization or improvement of the present solution, the first storage rod and the second storage rod are both provided with rubber sleeves.

[0012] As a further optimization or improvement of the present solution, the adjustment assembly further includes a roller, and the movable rod contacts the groove via the roller.

[0013] As a further optimization or improvement of this solution, a feed roller is installed at the input end of the furnace body, and a power supply box is installed on the top of the furnace body.

[0014] Beneficial effects of the present invention:

[0015] (1) The present invention places the baked object on each section of the conveyor belt. As the power shaft drives the conveyor belt to move, the concave plate on the conveyor belt drives the moving rod to move up and down. When the roller on the moving rod is located in the middle of the concave plate, the moving rod drives the air outlet head vertically toward the baked object on the conveyor belt through the transmission rod, so that the transmission rod directly heats the baked object; when the roller is located between two concave plates, the moving rod moves to the highest position, and the air outlet heads are respectively directed toward the baked objects on two adjacent conveyor belts, thereby reducing the amount of heat loss when the air outlet heads are directed toward the gap between the conveyor belts; when the air outlet heads are directed toward the gap between the baked objects, the present invention can adjust the air outlet heads by adjusting the components so that the air outlet heads are aligned with the adjacent baked objects, thereby improving the heat utilization rate when the air outlet heads are directed toward the gap between the conveyor belts.

[0016] (2) The present invention places the baking item on the second and first placement rods, and the weight of the baking item drives the first and second placement rods to move downward and drives the first placement rod to stretch, so that the telescopic blocking plate 1 is separated from the blocking of the air inlet, and the placement rods are adjusted;

[0017] When the roller moves between the two concave plates, the air outlet head is inclined toward the baking object, and the hot air blown out by the air outlet head drives the baking object to move, so that the baking object is released from the pressure of the object placement rod 1. At this time, the object placement rod 1 and the telescopic blocking plate 1 are reset, and the telescopic blocking plate 1 blocks one of the air inlets of the heat storage box. Then the hot air enters the heat storage box through the other air inlet and is discharged through the vents on the top of the heat storage box. The hot air discharged from the vents heats the bottom of the baking object, thereby improving the utilization rate of the hot air and accelerating the baking of the baking object.

[0018] When the air outlet is tilted toward the other end of the baking piece, the hot air blown out by the air outlet drives the baking piece to move in the opposite direction. In this process, the baking piece is released from the pressure of the second placement rod, and the reset spring drives the second placement rod and the second telescopic blocking plate to reset. At this time, the air inlet is completely blocked, and at the same time, the bottom surface of the baking piece adheres to and blocks the air holes on the heat storage box. At this time, the hot air that is not discharged from the air holes is blocked in the heat storage box, so that the heat flow can be stored in the heat storage box and continue to supply heat to the baking piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0021] Figure 2 It is a front view of the internal structure of the present invention.

[0022] Figure 3 for Figure 2 A magnified view of the structure of part A.

[0023] Figure 4 Schematic diagram of the installation position of the heat storage clamping assembly.

[0024] Figure 5 It is a schematic diagram of the connection relationship between the heat storage clamping assembly and the conveyor track.

[0025] Figure 6 Schematic diagram of the overall structure of the heat storage clamping assembly.

[0026] Figure 7 An exploded view of the overall structure of the heat storage clamping assembly.

[0027] Figure 8 It is a schematic diagram of the connection relationship between the heat storage box, the telescopic blocking plate 2 and the storage rod 2.

[0028] Fig. 9It is a schematic diagram of the connection relationship between the heat storage box, the storage rod and the telescopic blocking plate.

[0029] Fig.10 Schematic diagram of the working status of the heat storage clamping component Figure 1 .

[0030] Fig.11 Schematic diagram of the working status of the heat storage clamping component Figure 2 .

[0031] Fig.12 Schematic diagram of the working status of the heat storage clamping component Figure 3 .

[0032] The following are marked in the figure: 1. furnace body; 2. feed roller; 3. power supply box; 4. variable speed hot air blower; 5. power shaft; 6. conveyor track; 7. air outlet; 8. adjustment assembly; 801. concave plate; 802. groove; 803. roller; 804. moving rod; 805. transmission rod; 9. heat storage clamping assembly; 901. heat storage box; 902. air inlet; 903. air vent; 904. storage rod one; 905. connecting rod one; 906. telescopic blocking plate one; 907. storage rod two; 908. connecting rod two; 909. telescopic blocking plate two; 910. connecting groove; 911. rotating shaft; 912. connecting spring; 913. push block; 914. reset spring; 915. rubber sleeve. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 12 , an efficient and energy-saving infrared belt hot air circulation tunnel furnace, comprising a furnace body 1 and a variable speed hot air blower 4 and a power shaft 5 therein, a conveying crawler 6 driven by the power shaft 5 is installed inside the furnace body 1, the variable speed hot air blower 4 is connected to an air outlet 7, and the air outlet 7 is connected to the conveying crawler 6 through an adjustment component 8;

[0035] The adjustment assembly 8 includes a concave plate 801 and a moving rod 804. The concave plate 801 is provided with a groove 802. One end of the moving rod 804 is in contact with the groove 802. The other end of the moving rod 804 is connected to the air outlet 7 via a transmission rod 805.

[0036] A heat storage clamping assembly 9 is installed on the conveying crawler 6, and the heat storage clamping assembly 9 includes a heat storage box 901, and air inlets 902 are provided on both sides of the heat storage box 901, and the air inlets 902 on both sides of the heat storage box 901 are respectively blocked by a telescopic blocking plate 2 909 and a telescopic blocking plate 1 906, and the telescopic blocking plate 2 909 and the telescopic blocking plate 1 906 are rotatably connected to the heat storage box 901, and a vent hole 903 is provided on the top of the heat storage box 901, the telescopic blocking plate 2 909 is connected to the storage rod 2 907 through the connecting rod 2 908, the telescopic blocking plate 1 906 is connected to the storage rod 1 904 through the connecting rod 1 905, and the storage rod 2 907 and the storage rod 1 904 are respectively slidably matched with the heat storage box 901.

[0037] Specifically, the connecting rod 1 905 and the connecting rod 2 908 are connected to the heat storage box 901 through the return spring 914 respectively.

[0038] Specifically, a feed roller 2 is installed at the input end of the furnace body 1 , and a power supply box 3 is installed on the top of the furnace body 1 .

[0039] It should be noted that the size of each section of the conveyor crawler 6 is larger than the baked object, so that a certain interval can be reserved after the baked object is placed on each section of the conveyor crawler 6. An infrared heater is installed at the bottom of the variable speed hot air blower 4.

[0040] When in use, the baked item is placed on each section of the conveyor belt 6. As the power shaft 5 drives the conveyor belt 6 to move, the concave plate 801 on the conveyor belt 6 drives the moving rod 804 to move up and down. When the roller 803 on the moving rod 804 is located in the middle of the concave plate 801, Figure 3 As shown, at this time, the moving rod 804 moves to the lowest position, and the moving rod 804 drives the air outlet 7 vertically toward the baking object on the conveyor belt 6 through the transmission rod 805, so that the transmission rod 805 directly heats the baking object;

[0041] As the conveyor belt 6 moves, the roller 803 gradually moves outward from the middle of the concave plate 801, and the moving rod 804 gradually moves upward, driving the air outlet 7 to rotate. When the roller 803 is located between the two concave plates 801, the moving rod 804 moves to the highest position, and the air outlet 7 is directed toward the baked objects on the two adjacent conveyor belts 6, thereby reducing the heat loss from the air outlet 7 to the gap between the conveyor belts 6.

[0042] As the conveyor belt 6 drives the baked items thereon to move, when the air outlet 7 faces the gap between the baked items, the present invention can adjust the air outlet 7 through the adjustment component 8 so that the air outlet 7 is aligned with the adjacent baked items, thereby improving the heat utilization rate when the air outlet 7 faces the gap between the conveyor belt 6.

[0043] Specifically, in order to improve the utilization rate of the hot air heat during the rotation of the air outlet 7, the present invention places the baking items on the second placement rod 907 and the first placement rod 904, and the baking items drive the first placement rod 904 and the second placement rod 907 to move downward and drive the first placement rod 904 to stretch. At this time, the second placement rod 907 drives the second telescopic blocking plate 909 to shrink and rotate through the second connecting rod 908, so that the telescopic blocking plate 1 906 is separated from the blockage of the air inlet 902. Fig.10 As shown, the same is true for the placement rod 1 904, at this time, the air inlets 902 on both sides of the heat storage box 901 are open (the baking parts on the placement rod 2 907 and the placement rod 1 904 are suspended);

[0044] When the roller 803 moves between the two concave plates 801, the air outlet head 7 is inclined toward the baking object. Under the action of the air outlet head 7, the hot air blown out by the air outlet head 7 drives the baking object to move. Fig.11 As shown, during this process, the baking piece is released from the pressing of the object rod 904, and the reset spring 914 drives the object rod 904 and the telescopic blocking plate 906 to reset. At this time, the telescopic blocking plate 906 blocks one of the air inlets 902 of the heat storage box 901, and then the hot air enters the heat storage box 901 through the other air inlet 902 and is discharged through the vent 903 on the top of the heat storage box 901. The hot air discharged from the vent 903 heats the bottom of the baking piece, thereby improving the utilization rate of the hot air and accelerating the baking of the baking piece.

[0045] As the conveyor belt 6 moves, the air outlet 7 is tilted toward the other end of the baking piece. Fig.12 As shown, the hot air blown out by the air outlet 7 drives the baking piece to move in the opposite direction. During this process, the baking piece is separated from the pressure of the second placement rod 907, and the reset spring 914 drives the second placement rod 907 and the second telescopic blocking plate 909 to reset. At this time, the air inlet 902 is completely blocked. At the same time, under the action of the hot air from the air outlet 7, the baking piece pushes the placement rod 1 904 to rotate and press the connecting spring 912. When the baking piece is separated from the pressure of the second placement rod 907, the rubber sleeve 915 on the second placement rod 907 and the placement rod 1 904 clamps the baking piece. At the same time, the bottom surface of the baking piece is attached to and blocks the vent 903 on the heat storage box 901. At this time, the hot air not discharged from the vent 903 is blocked in the heat storage box 901, so that the heat flow can be stored in the heat storage box 901 and continue to supply heat to the baking piece.

[0046] See also Figure 5-Figure 12 The heat storage clamping assembly 9 also includes a rotating shaft 911. A connecting groove 910 is opened on the heat storage box 901. The connecting groove 910 is equipped with a rotating shaft 911. The rotating shaft 911 is connected to the inner wall of the connecting groove 910 through a connecting spring 912. The second storage rod 907 and the first storage rod 904 are respectively slidably matched with the rotating shaft 911.

[0047] It should be noted that when the roller 803 moves between the two concave plates 801, the air outlet 7 faces two adjacent baking objects. At this time, the air outlet 7 is obliquely facing the baking objects. If the baking objects are light, the air outlet 7 is very likely to drive the baking objects to move. In order to avoid the above situation;

[0048] When the roller 803 of the present invention moves between the two concave plates 801, the air outlet 7 is inclined toward the baking object. Under the action of the air outlet 7, the hot air blown out by the air outlet 7 drives the baking object to move. Fig.11 As shown, during this process, the baking piece is released from the pressing of the object rod 904, and the reset spring 914 drives the object rod 904 and the telescopic blocking plate 906 to reset. At this time, the telescopic blocking plate 906 blocks one of the air inlets 902 of the heat storage box 901, and then the hot air enters the heat storage box 901 through the other air inlet 902 and is discharged through the vent 903 on the top of the heat storage box 901. The hot air discharged from the vent 903 heats the bottom of the baking piece, thereby improving the utilization rate of the hot air and accelerating the baking of the baking piece.

[0049] As the conveyor belt 6 moves, the air outlet 7 is tilted toward the other end of the baking piece. Fig.12 As shown, the hot air blown out by the air outlet 7 drives the baking piece to move in the opposite direction. During this process, the baking piece is separated from the pressure of the opposing rod 907, and the reset spring 914 drives the placement rod 907 and the telescopic blocking plate 909 to reset. At this time, the air inlet 902 is completely blocked. At the same time, under the action of the hot air from the air outlet 7, the baking piece pushes the placement rod 1 904 to rotate and presses the connecting spring 912. When the baking piece is separated from the pressure of the opposing rod 907, the placement rod 907 and the rubber sleeve 915 on the placement rod 1 904 clamp the baking piece, effectively preventing the baking piece from being separated from the heat storage box 901, ensuring that the distance between the baking pieces is fixed, and thus facilitating the mechanical claws to clamp the material when discharging.

[0050] See also Figure 8-Figure 9 A push block 913 is fixedly installed on the storage rod 1 904 and the storage rod 2 907 , and the push blocks 913 on the storage rod 1 904 and the storage rod 2 907 abut against the connecting rod 1 905 and the connecting rod 2 908 respectively.

[0051] It should be noted that the push blocks 913 on the storage rod 1 904 and the storage rod 2 907 can push the connecting rod 1 905 and the connecting rod 2 908 to rise and fall horizontally, ensuring that the telescopic blocking plate 1 906 and the telescopic blocking plate 2 909 can effectively rotate and retract, thereby opening the air inlet 902.

[0052] See also Figure 8-Figure 9 The first and second placement rods 904 and 907 are both covered with rubber sleeves 915. It should be noted that when the baking items are clamped by the rubber sleeves 915, damage to the baking items caused by direct clamping can be avoided. Fig.10 When the baked items are placed on the first and second placement rods 904 and 907, the rubber sleeves 915 can provide a certain friction force for the baked items, effectively preventing the baked items from being separated from the first and second placement rods 904 and 907 due to the operation of the conveyor track 6.

[0053] See also Figure 3-Figure 4 The adjusting assembly 8 further includes a roller 803, and the moving rod 804 contacts the groove 802 through the roller 803. It should be noted that the roller 803 can reduce the friction between the moving rod 804 and the groove 802, thereby increasing the service life of the adjusting assembly 8.

[0054] The implementation principle of the present invention is:

[0055] When in use, the baked item is placed on each section of the conveyor belt 6. As the power shaft 5 drives the conveyor belt 6 to move, the concave plate 801 on the conveyor belt 6 drives the moving rod 804 to move up and down. When the roller 803 on the moving rod 804 is located in the middle of the concave plate 801, Figure 3 As shown, at this time, the moving rod 804 moves to the lowest position, and the moving rod 804 drives the air outlet 7 vertically toward the baking object on the conveyor belt 6 through the transmission rod 805, so that the transmission rod 805 directly heats the baking object;

[0056] As the conveyor belt 6 moves, the roller 803 gradually moves outward from the middle of the concave plate 801, and the moving rod 804 gradually moves upward, driving the air outlet 7 to rotate. When the roller 803 is located between the two concave plates 801, the moving rod 804 moves to the highest position, and the air outlet 7 is directed toward the baked objects on the two adjacent conveyor belts 6, thereby reducing the heat loss from the air outlet 7 to the gap between the conveyor belts 6.

[0057] As the conveyor belt 6 drives the baked items thereon to move, when the air outlet 7 faces the gap between the baked items, the present invention can adjust the air outlet 7 through the adjustment component 8 so that the air outlet 7 is aligned with the adjacent baked items, thereby improving the heat utilization rate when the air outlet 7 faces the gap between the conveyor belt 6.

[0058] Specifically, in order to improve the utilization rate of the hot air heat during the rotation of the air outlet 7, the present invention places the baking items on the second placement rod 907 and the first placement rod 904, and the baking items drive the first placement rod 904 and the second placement rod 907 to move downward and drive the first placement rod 904 to stretch. At this time, the second placement rod 907 drives the second telescopic blocking plate 909 to shrink and rotate through the second connecting rod 908, so that the telescopic blocking plate 1 906 is separated from the blockage of the air inlet 902. Fig.10As shown, the same is true for the placement rod 1 904, at this time, the air inlets 902 on both sides of the heat storage box 901 are open (the baking parts on the placement rod 2 907 and the placement rod 1 904 are suspended);

[0059] When the roller 803 moves between the two concave plates 801, the air outlet head 7 is inclined toward the baking object. Under the action of the air outlet head 7, the hot air blown out by the air outlet head 7 drives the baking object to move. Fig.11 As shown, during this process, the baking piece is released from the pressing of the object rod 904, and the reset spring 914 drives the object rod 904 and the telescopic blocking plate 906 to reset. At this time, the telescopic blocking plate 906 blocks one of the air inlets 902 of the heat storage box 901, and then the hot air enters the heat storage box 901 through the other air inlet 902 and is discharged through the vent 903 on the top of the heat storage box 901. The hot air discharged from the vent 903 heats the bottom of the baking piece, thereby improving the utilization rate of the hot air and accelerating the baking of the baking piece.

[0060] As the conveyor belt 6 moves, the air outlet 7 is tilted toward the other end of the baking piece. Fig.12 As shown, the hot air blown out by the air outlet 7 drives the baking piece to move in the opposite direction. During this process, the baking piece is separated from the pressure of the second placement rod 907, and the reset spring 914 drives the second placement rod 907 and the second telescopic blocking plate 909 to reset. At this time, the air inlet 902 is completely blocked. At the same time, under the action of the hot air from the air outlet 7, the baking piece pushes the placement rod 1 904 to rotate and press the connecting spring 912. When the baking piece is separated from the pressure of the second placement rod 907, the rubber sleeve 915 on the second placement rod 907 and the placement rod 1 904 clamps the baking piece. At the same time, the bottom surface of the baking piece is attached to and blocks the vent 903 on the heat storage box 901. At this time, the hot air not discharged from the vent 903 is blocked in the heat storage box 901, so that the heat flow can be stored in the heat storage box 901 and continue to supply heat to the baking piece.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An efficient and energy-saving infrared hot air circulation tunnel furnace, characterized by: The invention comprises a furnace body (1) and a variable speed hot air blower (4) and a power shaft (5) therein; a conveying crawler (6) driven by the power shaft (5) is installed inside the furnace body (1); the variable speed hot air blower (4) is connected to an air outlet (7); and the air outlet (7) is connected to the conveying crawler (6) via an adjusting component (8); The adjustment assembly (8) comprises a concave plate (801) and a moving rod (804); the concave plate (801) is provided with a groove (802); one end of the moving rod (804) is in contact with the groove (802); and the other end of the moving rod (804) is connected to the air outlet (7) via a transmission rod (805); The conveyor crawler (6) is provided with a heat storage clamping assembly (9), the heat storage clamping assembly (9) comprising a heat storage box (901), air inlets (902) are provided on both sides of the heat storage box (901), and the air inlets (902) on both sides of the heat storage box (901) are blocked by a second telescopic blocking plate (909) and a first telescopic blocking plate (906), respectively, and the second telescopic blocking plate (909) and the first telescopic blocking plate (906) are rotatably connected to the heat storage box (901), a vent hole (903) is provided on the top of the heat storage box (901), the second telescopic blocking plate (909) is connected to a second storage rod (907) via a second connecting rod (908), the first telescopic blocking plate (906) is connected to a first storage rod (904) via a first connecting rod (905), and the second storage rod (907) and the first storage rod (904) are respectively slidably matched with the heat storage box (901); A concave plate (801) is installed on each section of the conveying crawler belt (6).

2. The high-efficiency and energy-saving infrared hot air circulation tunnel furnace according to claim 1 is characterized in that: The heat storage clamping assembly (9) further comprises a rotating shaft (911); a connecting groove (910) is provided on the heat storage box (901); a rotating shaft (911) is installed in the connecting groove (910); the rotating shaft (911) is connected to the inner side wall of the connecting groove (910) via a connecting spring (912); and the second storage rod (907) and the first storage rod (904) are respectively slidably matched with the rotating shaft (911).

3. The high-efficiency and energy-saving infrared hot air circulation tunnel furnace according to claim 1 is characterized in that: The connecting rod 1 (905) and the connecting rod 2 (908) are respectively connected to the heat storage box (901) via a return spring (914).

4. The high-efficiency and energy-saving infrared hot air circulation tunnel furnace according to claim 1 is characterized in that: A push block (913) is fixedly mounted on the storage rod 1 (904) and the storage rod 2 (907). The push blocks (913) on the storage rod 1 (904) and the storage rod 2 (907) respectively abut against the connecting rod 1 (905) and the connecting rod 2 (908).

5. The high-efficiency and energy-saving infrared hot air circulation tunnel furnace according to claim 1 is characterized in that: The first storage rod (904) and the second storage rod (907) are both sleeved with rubber sleeves (915).

6. The high-efficiency and energy-saving infrared hot air circulation tunnel furnace according to claim 1, characterized in that: The adjustment assembly (8) further comprises a roller (803), and the moving rod (804) contacts the groove (802) via the roller (803).

7. The high-efficiency and energy-saving infrared hot air circulation tunnel furnace according to claim 1, characterized in that: A feeding roller (2) is installed at the input end of the furnace body (1), and a power supply box (3) is installed on the top of the furnace body (1).

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