Damping energy-saving tunnel furnace

Abstract

The utility model discloses a shock-absorbing energy-saving tunnel furnace, which relates to the technical field of industrial heating and comprises a tunnel furnace shell, a feed port and a discharge port are respectively arranged on two side walls of the tunnel furnace shell, a hearth is arranged in the tunnel furnace shell, a radiation electric heater is arranged in the middle of the hearth, and a heat exchanger is arranged on the radiation electric heater. A coiled pipe is embedded in the inner wall of the tunnel furnace shell, a plurality of heat transfer fins are fixedly connected to the outer wall of the coiled pipe, an air suction pipe is fixedly connected to the top end of the coiled pipe, an air outlet pipe is fixedly connected to the bottom end of the coiled pipe, a gas circulating pump is arranged on one side of the air outlet pipe, and a conveying belt is erected in the middle of the tunnel furnace shell. And main supporting frames are mounted at the bottoms of the two ends of the conveying belt. By arranging a series of structures, waste of heat in the tunnel furnace is reduced, more energy is saved, materials on the conveying belt are not prone to interference caused by vibration, and heating of the materials in the tunnel furnace is better facilitated.

Description

Technical Field

[0001] This utility model relates to the field of industrial heating furnace technology, specifically a vibration-damping and energy-saving tunnel furnace. Background Technology

[0002] A tunnel furnace is a high-efficiency, continuous heating device widely used in modern industrial production. It is mainly used for heating, drying, and curing materials. Materials are usually heated inside the tunnel furnace by conveyor belts or chains.

[0003] However, in the operation of existing thermal radiation tunnel furnaces, the heat inside the furnace continuously rises and accumulates at the top of the inner side of the furnace. This heat either dissipates through the inlet and outlet ports on both sides of the tunnel furnace or remains at the top until it cools down after passing through the tunnel furnace, which easily leads to the waste of heat energy and is not energy-efficient. In addition, the conveyor belt for conveying materials in existing tunnel furnaces is usually integrally connected to the outer shell of the tunnel furnace. Since tunnel furnaces are usually equipped with ventilation fans, the fans generate significant vibrations when they rotate. These vibrations are transmitted through the connecting parts between the structures and are easily transmitted to the heated materials on the conveyor belt. This causes the materials to be easily disturbed by vibrations when heated, which is not conducive to the heating of materials in the tunnel furnace. Utility Model Content

[0004] The purpose of this invention is to provide a vibration-damping and energy-saving tunnel furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vibration-damping and energy-saving tunnel furnace, comprising a tunnel furnace shell, with a feed inlet and a discharge outlet respectively opened on the two side walls of the tunnel furnace shell, a furnace chamber opened inside the tunnel furnace shell, a radiant electric heater installed in the middle of the furnace chamber, a serpentine tube embedded in the inner wall of the tunnel furnace shell, a plurality of heat transfer fins fixedly connected to the outer wall of the serpentine tube, a suction pipe fixedly connected to the top end of the serpentine tube, a gas outlet pipe fixedly connected to the bottom end of the serpentine tube, a gas circulation pump provided on one side of the gas outlet pipe, a conveyor belt mounted in the middle of the tunnel furnace shell, main support frames installed at the bottom of both ends of the conveyor belt, a second vibration-damping foot installed in the middle of the bottom end of the conveyor belt, and a connecting plate provided at the bottom of the second vibration-damping foot.

[0006] Preferably, the top and side walls of the tunnel furnace shell are fixedly connected with insulation boards, and the four corners of the bottom of the tunnel furnace shell are each equipped with a first shock-absorbing damping foot.

[0007] Preferably, the connecting plate is fixedly connected to the bottom of the inner side of the furnace, and the bottom end of the second shock-absorbing damping foot is fixedly connected to the top end of the connecting plate.

[0008] Preferably, the suction end of the gas circulation pump is connected to the top end of the exhaust pipe, and a hood is fitted on the top of the exhaust end of the gas circulation pump, with the hood located at the bottom of the conveyor belt.

[0009] Preferably, the suction pipe is located at the top of the inner side of the furnace, and both the suction pipe and the exhaust pipe communicate with the interior of the serpentine tube.

[0010] Preferably, the suction pipe is located at the top of the tunnel furnace shell near the discharge port, and the exhaust pipe is located at the bottom of the tunnel furnace shell near the feed port.

[0011] Preferably, protective nets are embedded at the openings of both the hood and the suction pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This vibration-damping and energy-saving tunnel furnace, through the suction pipe, serpentine pipe, heat transfer fins, gas circulation pump, and exhaust pipe, allows the heat accumulated at the top of the inner side of the tunnel furnace to be drawn into the suction pipe by the gas circulation pump, and then flows along the outer shell of the tunnel furnace to the bottom of the feed inlet. This allows the heat to circulate in reverse within the tunnel furnace, ensuring that the temperature inside the furnace remains stable due to the heat circulation. At the same time, the residual heat from the exhaust pipe can raise the temperature at the feed inlet, thereby reducing heat waste within the tunnel furnace and achieving greater energy savings.

[0014] 2. This vibration-damping and energy-saving tunnel furnace, through the main support frame, the first vibration-damping foot, the connecting plate and the second vibration-damping foot, can connect the tunnel furnace and the conveyor belt through structures with vibration-damping effects, such as the second vibration-damping foot and the connecting plate. This makes it less likely for the vibration generated by the fan rotation inside the tunnel furnace to be transmitted to the conveyor belt that is conveying materials, so that the materials on the conveyor belt are less affected by vibration, thus making it more conducive to the heating of materials inside the tunnel furnace. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the serpentine tube and heat transfer fin structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the first and second damping shock absorber bases of this utility model.

[0018] Figure 4 This is a schematic diagram of the insulation board and air intake pipe structure of this utility model.

[0019] In the diagram: 1. Tunnel furnace shell; 2. Insulation board; 3. Feed inlet; 4. Conveyor belt; 5. Main support frame; 6. First damping foot; 7. Serpentine tube; 8. Heat transfer fins; 9. Furnace chamber; 10. Second damping foot; 11. Connecting plate; 12. Gas circulation pump; 13. Gas outlet pipe; 14. Cover hopper; 15. Radiant electric heater; 16. Suction pipe; 17. Discharge port. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 4As shown, the vibration-damping and energy-saving tunnel furnace of this embodiment includes a tunnel furnace shell 1. The two side walls of the tunnel furnace shell 1 are respectively provided with a feed port 3 and a discharge port 17. The interior of the tunnel furnace shell 1 is provided with a furnace chamber 9. A radiant electric heater 15 is installed in the middle of the furnace chamber 9. A serpentine tube 7 is embedded in the inner wall of the tunnel furnace shell 1. Several heat transfer fins 8 are fixedly connected to the outer wall of the serpentine tube 7. A suction pipe 16 is fixedly connected to the top of the serpentine tube 7. An exhaust pipe 13 is fixedly connected to the bottom of the serpentine tube 7. A gas circulation pump 12 is provided on one side of the exhaust pipe 13. A conveyor belt 4 is mounted in the middle of the tunnel furnace shell 1. A main support frame 5 is installed at the bottom of both ends of the conveyor belt 4. A second vibration-damping foot 10 is installed in the middle of the bottom end of the conveyor belt 4. A connecting plate 11 is provided at the bottom of the second vibration-damping foot 10.

[0024] Specifically, the tunnel furnace shell 1 features an integrated design with fewer connecting parts, making it less prone to structural loosening during vibration and thus ensuring the stability of the tunnel furnace shell 1 during operation. The feed inlet 3 is internally connected to the discharge outlet 17 via the furnace chamber 9. The feed inlet 3 and discharge outlet 17 allow the conveyor belt 4 to smoothly pass through both sides of the tunnel furnace shell 1, thereby heating the material on the conveyor belt 4. The serpentine tube 7 allows heat from the top of the inner side of the furnace chamber 9 to flow from the discharge outlet 17 to the feed inlet 3, facilitating reverse heat flow. Several fins allow the heat flowing along the serpentine tube 7 to dissipate through the heat transfer fins 8, increasing the temperature at the tunnel furnace feed inlet 3 and further ensuring the stability of the temperature inside the tunnel furnace. After starting, the gas circulation pump 12 generates negative pressure at the inlet of the suction pipe 16. This allows the heat accumulated nearby to be drawn into the serpentine tube 7 and then flow in the opposite direction to the feed inlet 3, thereby raising the temperature at the feed inlet 3 and realizing the reuse of heat, reducing unnecessary heat waste and making it more energy-efficient. The main support frame 5 mainly supports the two ends of the two conveyor belts 4, so that the conveyor belts 4 can be placed on both sides of the tunnel furnace, so that the conveyor belts 4 are not directly connected to the tunnel furnace shell 1, thereby cutting off the vibration propagation path and reducing the probability of the conveyor belts 4 being disturbed by the vibration inside the tunnel furnace. The second damping shock-absorbing foot can weaken the vibration transmitted from the tunnel furnace shell 1 to the conveyor belts 4, thereby reducing the probability of the conveyor belts 4 resonating due to the vibration of the tunnel furnace shell 1, thereby reducing the interference of vibration on the material on the conveyor belts 4. The connecting plate 11 is used to connect the second damping shock-absorbing feet together to increase the stability of the second damping shock-absorbing feet.

[0025] Furthermore, insulation boards 2 are fixedly connected to the top and side walls of the tunnel furnace shell 1, and first damping feet 6 are installed at the four corners of the bottom of the tunnel furnace shell 1. The function of the first damping feet 6 is to prevent the tunnel furnace shell 1 from transmitting vibration to the ground when it vibrates, and to reduce the amplitude of the tunnel furnace vibration, thereby helping to ensure the stability of the tunnel furnace during operation.

[0026] Furthermore, the connecting plate 11 is fixedly connected to the bottom of the inner side of the furnace 9, and the bottom end of the second damping foot 10 is fixedly connected to the top end of the connecting plate 11. The function of the connecting plate 11 is to connect all the second damping feet 10, thereby increasing the stability of the second damping feet 10 in the furnace 9.

[0027] Furthermore, the suction end of the gas circulation pump 12 is connected to the top of the exhaust pipe 13, and the top of the exhaust end of the gas circulation pump 12 is fitted with a hood 14. The hood 14 is located at the bottom of the conveyor belt 4. The function of the hood 14 is to allow the airflow blown out of the exhaust pipe 13 to quickly diffuse into the furnace 9, thereby facilitating the airflow in the furnace 9 to flow back to the top of the inner side of the furnace 9 after heating, thereby realizing the reverse circulation of heat and reducing unnecessary waste of heat.

[0028] Furthermore, the suction pipe 16 is located at the top inside the furnace 9. Both the suction pipe 16 and the exhaust pipe 13 are connected to the inside of the serpentine tube 7. The suction pipe 16 can draw the heat accumulated at the top inside the furnace 9 into the serpentine tube 7, so that the heat flows orderly to the feed inlet 3, thereby making full use of the heat and reducing unnecessary waste of heat.

[0029] Furthermore, the suction pipe 16 is located at the top of the tunnel furnace shell 1 near the discharge port 17, and the exhaust pipe 13 is located at the bottom of the tunnel furnace shell 1 near the feed port 3. The purpose of placing the suction pipe 16 near the discharge port 17 is that, generally speaking, the temperature of the discharge port 17 of the tunnel furnace is higher than that of the feed port 3. Excessive heat accumulation at the discharge port 17 can easily cause uneven temperature distribution inside the tunnel furnace and also easily cause heat loss. However, by placing the suction pipe 16 at the discharge port 17, excess heat can be transferred to the feed port 3, so that the temperatures of the feed port 3 and the discharge port 17 can be closer, which is conducive to uniform temperature distribution inside the tunnel furnace and more energy-efficient.

[0030] Furthermore, protective nets are embedded at the openings of the hood 14 and the suction pipe 16. The purpose of the protective nets is to prevent debris from entering the suction pipe 16 and the exhaust pipe 13 and causing pipe blockage, thereby ensuring that heat can flow normally in the serpentine pipe 7.

[0031] The usage method of this embodiment is as follows: When using this vibration-damping and energy-saving tunnel furnace, the tunnel furnace needs to be connected to an external power source first. Then, the electrical components inside the conveyor belt 4 and the tunnel furnace shell 1 are started respectively, so that the material enters the tunnel furnace shell 1 from the feed inlet 3 via the conveyor belt 4. At the same time, the radiant electric heater 15 will generate heat. When vibration occurs inside the tunnel furnace shell 1, the vibration will be transmitted to the first vibration-damping foot 6, so that the vibration transmitted from the tunnel furnace shell 1 to the ground can be weakened. At the same time, the second vibration-damping foot 10 at the junction of the tunnel furnace shell 1 and the conveyor belt 4 can also weaken the vibration transmitted to the conveyor belt 4, so that the material on the conveyor belt 4 can remain stable on the conveyor belt 4. In the conveying state, the gas circulation pump 12 can then be started, which will draw out the air inside the serpentine tube 7 and the suction pipe 16, so that a negative pressure can be formed at the end of the suction pipe 16. This allows the suction pipe 16 to draw the heat accumulated at the top of the inner side of the furnace 9 into the serpentine tube 7 through the suction pipe 16, and transfer it to different positions on the inner wall of the tunnel furnace shell 1 through the heat transfer fins 8 on the outer wall of the serpentine tube 7. Then, it enters the gas circulation pump 12 through the exhaust pipe 13, and then blows from the top of the hood 14 to the bottom of the conveyor belt 4 before entering the furnace 9. The residual heat blown out from the hood 14 will raise the temperature at the feed inlet 3, so that the heat can be fully utilized.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vibration-damping and energy-saving tunnel furnace, comprising a tunnel furnace shell (1), characterized in that: The tunnel furnace shell (1) has a feed inlet (3) and a discharge outlet (17) on its two side walls respectively. The tunnel furnace shell (1) has a furnace chamber (9) inside. A radiant electric heater (15) is installed in the middle of the furnace chamber (9). A serpentine tube (7) is embedded in the inner wall of the tunnel furnace shell (1). Several heat transfer fins (8) are fixedly connected to the outer wall of the serpentine tube (7). A suction pipe (16) is fixedly connected to the top of the serpentine tube (7). An exhaust pipe (13) is fixedly connected to the bottom of the serpentine tube (7). A gas circulation pump (12) is provided on one side of the exhaust pipe (13). A conveyor belt (4) is mounted in the middle of the tunnel furnace shell (1). A main support frame (5) is installed at the bottom of both ends of the conveyor belt (4). A second shock-absorbing damping foot (10) is installed in the middle of the bottom end of the conveyor belt (4). A connecting plate (11) is provided at the bottom of the second shock-absorbing damping foot (10).

2. The vibration-damping and energy-saving tunnel furnace according to claim 1, characterized in that: The top and side walls of the tunnel furnace shell (1) are fixedly connected with insulation boards (2), and the four corners of the bottom of the tunnel furnace shell (1) are all equipped with first shock-absorbing damping feet (6).

3. The vibration-damping and energy-saving tunnel furnace according to claim 1, characterized in that: The connecting plate (11) is fixedly connected to the bottom of the inner side of the furnace (9), and the bottom end of the second shock-absorbing damping foot (10) is fixedly connected to the top end of the connecting plate (11).

4. The vibration-damping and energy-saving tunnel furnace according to claim 1, characterized in that: The gas circulation pump (12) has its intake end connected to the top end of the exhaust pipe (13), and a hood (14) is fitted on the top of the exhaust end of the gas circulation pump (12), which is located at the bottom of the conveyor belt (4).

5. A vibration-damping and energy-saving tunnel furnace according to claim 1, characterized in that: The suction pipe (16) is located at the top inside the furnace (9), and both the suction pipe (16) and the exhaust pipe (13) are connected to the interior of the serpentine pipe (7).

6. The vibration-damping and energy-saving tunnel furnace according to claim 1, characterized in that: The suction pipe (16) is located at the top of the tunnel furnace shell (1) near the discharge port (17), and the exhaust pipe (13) is located at the bottom of the tunnel furnace shell (1) near the feed port (3).

7. A vibration-damping and energy-saving tunnel furnace according to claim 4, characterized in that: Protective nets are embedded at the openings of the hood (14) and the suction pipe (16).

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