Vertical enameling machine annealing furnace capable of utilizing waste heat of exhaust gas

Abstract

The utility model discloses a vertical enamelling machine annealing furnace capable of utilizing waste heat of exhaust gas, and relates to the technical field of enamelled wire production. The heat exchanger comprises a preheating bin, an outer heat preservation shell and a driving motor, a plurality of heat exchange fins are fixed on the inner wall of the outer heat preservation shell at equal intervals, the preheating bin is fixed in all the heat exchange fins, the driving motor is fixed on one side of the outer heat preservation shell, a rotating shaft is fixed at the output end of the driving motor, and the rotating shaft penetrates through one side of the outer heat preservation shell and one side of the preheating bin. An inner rotating roller is fixed to the end, away from the driving motor, of the rotating shaft and rotationally connected with the preheating bin. Through the arrangement of the preheating bin, the outer heat preservation shell and the driving motor, the problems that energy utilization is insufficient and the heat utilization rate is not high in the annealing process of the enameled wire are solved, and the annealing furnace has the advantages that the energy utilization is more sufficient and the energy utilization rate is higher in the annealing process of the enameled wire.

Description

Technical Field

[0001] This utility model belongs to the field of enameled wire production technology, and in particular relates to a vertical enameled machine annealing furnace for utilizing waste heat from exhaust gas. Background Technology

[0002] Enameling machines are crucial equipment in the enameling wire industry for producing enameled wire. Their function is to uniformly coat the processed copper (or aluminum) wire with a layer of insulating polyester enamel. The enameling enamel used in the production process contains a large amount of diluent and organic solvents, mainly benzene, xylene, and cresol, which volatilize during the heating and curing of the enamel film. After production, the enameled wire is conveyed to an annealing furnace for heat treatment. The annealing furnace is a key piece of equipment in the enameling wire production process. By heating the wire, the conductor, which has hardened due to lattice changes during the stretching process, is restored to the required softness after molecular lattice rearrangement. Simultaneously, it removes residual lubricant and oil from the conductor surface, making the wire easier to coat with enamel and ensuring the quality of the enameled wire. However, in practical use, it still has the following drawbacks:

[0003] In the production of enameled wire in the enameling machine, polyester enamel is dried by catalytic combustion. However, a large amount of waste heat is still generated after drying. This waste heat is directly discharged into the atmosphere through the emission system. During the annealing production of enameled wire, heating is also required. The energy utilization in the production of enameled wire is not sufficient, resulting in energy waste.

[0004] Secondly, in the production of enameled wire, the enameled wire is directly fed into the annealing furnace for preheating. However, only the wire initially enters the furnace during preheating, the preheating time is short, the preheating is not sufficient, and the heat utilization rate is not high. Utility Model Content

[0005] The purpose of this utility model is to provide a vertical enameling machine annealing furnace for utilizing waste heat from exhaust gas. By setting up a preheating chamber, an outer insulation shell, and a drive motor, it solves the problems of insufficient energy utilization and low heat utilization rate in enameling wire annealing.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a vertical enameling machine annealing furnace for utilizing waste heat from exhaust gas. It includes a preheating chamber, an outer insulation shell, and a drive motor. Several heat exchange fins are fixed at equal intervals on the inner wall of the outer insulation shell. The preheating chamber is fixed within all the heat exchange fins. The drive motor is fixed to one side of the outer insulation shell, and a rotating shaft is fixed to the output end of the drive motor. The rotating shaft passes through one side of the outer insulation shell and the preheating chamber. An inner rotating roller is fixed to the end of the rotating shaft away from the drive motor. The inner rotating roller is rotatably connected to the preheating chamber. During operation, the inner rotating roller, driven by the drive motor, is connected to the preheating chamber. The preheating chamber receives the hot flue gas passing through the outer insulation shell, and the outer insulation shell transfers the heat from preheating the enameled wire body to the preheating chamber.

[0008] Furthermore, an inner outlet sleeve is fixedly connected to the bottom of the preheating chamber, and an inner inlet sleeve is fixedly connected to one side of the preheating chamber. The preheating chamber conveys the enameled wire to the outer outlet sleeve through the inner outlet sleeve, and then conveys it to the inner outlet sleeve through the outer outlet sleeve.

[0009] Furthermore, a heat insulation plate is fixed on one side wall of the outer insulation shell. The heat insulation plate is fixed on one side of the preheating chamber, and a notch is opened on the heat exchange fins at the location of the heat insulation plate. The heat insulation plate separates the hot flue gas after heat conduction from the hot flue gas before heat conduction.

[0010] Furthermore, a flue gas pipe is symmetrically and fixedly connected to one side of the outer insulation shell. The two flue gas pipes are respectively located above and below the outer insulation shell, and the fixed connection position of the flue gas pipes is located in the gap between the preheating chamber and the inner wall of the outer insulation shell, so that the flue gas is transported into the outer insulation shell, and the hot flue gas heats the outer insulation shell when it passes through during operation.

[0011] Furthermore, an outer inlet sleeve is fixedly connected to the inner outlet sleeve at the position corresponding to the outer insulation shell, and the inner outlet sleeve and the outer inlet sleeve are fixedly connected. An outer outlet sleeve is fixedly connected to the inner outlet sleeve at the position corresponding to the outer insulation shell, and the inner outlet sleeve and the outer outlet sleeve are fixedly connected, so that the enameled wire body can be conveyed into and out of the outer insulation shell.

[0012] Furthermore, the bottom of the outer insulation shell is fixed with the annealing furnace body, and the enameled wire body is wound around the periphery of the inner rotating roller. The enameled wire body passes through the outer wire inlet sleeve and enters the inner wire inlet sleeve, and then enters the preheating chamber from the inner wire inlet sleeve. After being wound around the periphery of the inner rotating roller, the enameled wire body passes through the inner wire outlet sleeve at the bottom of the preheating chamber, and then through the outer wire outlet sleeve, extending into the annealing furnace body. This allows the enameled wire body to be conveyed into the annealing furnace body after preheating during operation.

[0013] This utility model has the following beneficial effects:

[0014] This invention solves the problem of insufficient energy utilization in enameled wire annealing by setting up a preheating chamber and an outer insulation shell. When the enameled wire body is conveyed through the preheating chamber, hot flue gas is transported between the preheating chamber and the outer insulation shell through the flue gas pipe located below. Then, the hot flue gas passes through the heat exchange fins and passes over the surface of the preheating chamber between the heat exchange fins, heating the preheating chamber and raising the temperature in the preheating chamber. This preheats the enameled wire body that has passed through the preheating chamber, reducing the heat required for enameled wire annealing. The flue gas is then conveyed to another flue gas pipe and output to the exhaust fan through the flue gas pipe, making the energy utilization in enameled wire annealing more efficient.

[0015] This invention solves the problem of insufficient heat utilization in enameled wire annealing by setting up a preheating chamber, an outer insulation shell, and a drive motor. During the preheating process, the enameled wire is directly passed through the inner inlet sleeve and into the preheating chamber via the outer inlet sleeve. Then, the drive motor is started, which drives the rotating shaft and rotates the inner roller. During the rotation of the inner roller, the enameled wire is fully preheated in the preheating chamber after being wound around the inner roller several times. It then passes through the inner inlet sleeve and the outer inlet sleeve and exits into the annealing furnace body for annealing. This results in higher heat utilization during enameled wire annealing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.

[0017] Figure 1 A three-dimensional view of the structure of a vertical enameling machine annealing furnace that utilizes waste heat from exhaust gases, after partial cross-section.

[0018] Figure 2 A three-dimensional view of the preheating chamber from below after it has been cut open;

[0019] Figure 3 This is a three-dimensional view of the structure of the outer insulation shell after it has been cut open.

[0020] Figure 4 This is a three-dimensional structural diagram of the drive motor;

[0021] Figure 5 This is a three-dimensional view of the assembly structure of a vertical enameling machine annealing furnace that utilizes waste heat from exhaust gases.

[0022] Figure label:

[0023] 1. Preheating chamber; 101. Inner inlet sleeve; 102. Inner outlet sleeve; 2. Outer insulation shell; 201. Outer inlet sleeve; 202. Outer outlet sleeve; 203. Heat exchange fins; 204. Heat insulation plate; 205. Flue gas pipe; 3. Drive motor; 301. Rotating shaft; 302. Inner rotating roller; 303. Enamelled wire body; 4. Annealing furnace body. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0025] Please see Figure 1-3 This utility model relates to a vertical enameling machine annealing furnace for utilizing waste heat from exhaust gas. It includes a preheating chamber 1, an outer insulation shell 2, and a drive motor 3. Several heat exchange fins 203 are evenly spaced on the inner wall of the outer insulation shell 2. When the outer insulation shell 2 is in operation, it insulates the exhaust gas from drying enameled wires passing between the preheating chamber 1 and the outer insulation shell 2. Heat from the exhaust gas is transferred to the heat exchange fins 203, and then transferred to the preheating chamber 1, preheating the enameled wires passing through the preheating chamber 1. All heat exchange fins 203 contribute to the overall heat exchange process. A preheating chamber 1 is fixed, which contains the enameled wire to be preheated and annealed. A drive motor 3 is fixed on one side of the outer insulation shell 2. A rotating shaft 301 is fixed at the output end of the drive motor 3. The rotating shaft 301 passes through the outer insulation shell 2 and one side of the preheating chamber 1. An inner rotating roller 302 is fixed at the end of the rotating shaft 301 away from the drive motor 3. The drive motor 3 drives the rotating shaft 301 to rotate, which in turn drives the inner rotating roller 302 to rotate. The inner rotating roller 302 is rotatably connected to the preheating chamber 1. The rotation of the inner rotating roller 302 drives the enameled wire body 303 to be wound and conveyed.

[0026] Specifically, an inner outlet sleeve 102 is fixedly installed through the bottom of the preheating chamber 1, and an inner inlet sleeve 101 is fixedly installed through one side of the preheating chamber 1. The preheating chamber 1 outputs the enameled wire to the outer outlet sleeve 202 through the inner outlet sleeve 102, and inputs the enameled wire into it through the inner inlet sleeve 101.

[0027] Furthermore, a heat insulation plate 204 is fixed on one side wall of the outer insulation shell 2. The heat insulation plate 204 is fixed on one side of the preheating chamber 1, and a notch is opened on the heat exchange fins 203 at the location of the heat insulation plate 204. The flue gas entering the outer insulation shell 2 and after heat exchange is separated by the heat insulation plate 204. The notch allows the flue gas to pass through different heat exchange fins 203.

[0028] Furthermore, a flue gas pipe 205 is symmetrically and fixedly connected to one side of the outer insulation shell 2. The two flue gas pipes 205 are respectively set above and below the outer insulation shell 2, and the flue gas pipes 205 are fixedly connected in the gap between the preheating chamber 1 and the inner wall of the outer insulation shell 2. The outer insulation shell 2 transports flue gas in and out of the outer insulation shell 2 through the flue gas pipes 205. The end of the lower flue gas pipe 205 is connected to the pipeline for transporting flue gas, and the flue gas in the upper pipe is fixedly connected to the exhaust fan and discharged into the air through the exhaust fan.

[0029] Furthermore, an outer inlet sleeve 201 is fixedly connected to the inner outlet sleeve 102 inside the outer insulation shell 2, and the inner outlet sleeve 102 is fixedly connected to the outer inlet sleeve 201. An outer outlet sleeve 202 is fixedly connected to the inner outlet sleeve 102 inside the outer insulation shell 2, and the inner outlet sleeve 102 and the outer outlet sleeve 202 are fixedly connected. When the outer insulation shell 2 is working, the enameled wire is fed into the inner inlet sleeve 101 through the outer inlet sleeve 201. After being wound on the inner roller 302, it passes through the inner outlet sleeve 102 and into the outer outlet sleeve 202.

[0030] The operation process of this embodiment is as follows: During operation, when the enameled wire body 303 is conveyed through the preheating chamber 1, hot flue gas is conveyed through the flue gas pipe 205 located below to the space between the preheating chamber 1 and the outer insulation shell 2. Then, the hot flue gas passes through the heat exchange fins 203 and passes through the surface of the preheating chamber 1 between the heat exchange fins 203, heating the preheating chamber 1 and raising the temperature in the preheating chamber 1. This preheats the enameled wire body 303 that has passed through the preheating chamber 1, reducing the heat required for the annealing of the enameled wire. The flue gas is then conveyed to another flue gas pipe 205 and output to the exhaust fan through the flue gas pipe 205. Specific Implementation Example 2

[0031] Please see Figure 1-5 Based on the first specific embodiment, the bottom of the outer insulation shell 2 is fixed with the annealing furnace body 4, and the circumference of the inner rotating roller 302 is wound with the enameled wire body 303. The enameled wire body 303 passes through the outer wire inlet sleeve 201 and enters the inner wire inlet sleeve 101. It enters the preheating chamber 1 from the inner wire inlet sleeve 101. After the enameled wire body 303 is wound around the circumference of the inner rotating roller 302, it passes through the inner wire outlet sleeve 102 at the bottom of the preheating chamber 1 and through the outer wire outlet sleeve 202, and extends into the annealing furnace body 4. After the enameled wire passes out of the outer insulation shell 2, it enters the annealing furnace body 4 and is annealed through the annealing furnace body 4.

[0032] The operation process of this embodiment is as follows: During operation, when the preheating chamber 1 is being heated, the enameled wire is directly passed through the inner wire inlet sleeve 101 through the outer wire inlet sleeve 201 and enters the preheating chamber 1. Then, the drive motor 3 is started, and the drive motor 3 drives the rotating shaft 301, which drives the inner rotating roller 302 to rotate. During the rotation of the inner rotating roller 302, the enameled wire is fully preheated in the preheating chamber 1 after being wound around the inner rotating roller 302 several times. It then passes through the inner wire inlet sleeve 101 and the outer wire inlet sleeve 201 and exits into the annealing furnace body 4 for annealing of the enameled wire body 303.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A vertical enameling machine annealing furnace for utilizing waste heat from exhaust gas, comprising a preheating chamber (1), an outer insulation shell (2), and a drive motor (3), characterized in that: A number of heat exchange fins (203) are fixed at equal intervals on the inner wall of the outer insulation shell (2). A preheating chamber (1) is fixed in all the heat exchange fins (203). A drive motor (3) is fixed on one side of the outer insulation shell (2). A rotating shaft (301) is fixed at the output end of the drive motor (3). The rotating shaft (301) passes through one side of the outer insulation shell (2) and the preheating chamber (1). An inner rotating roller (302) is fixed at the end of the rotating shaft (301) away from the drive motor (3). The inner rotating roller (302) is rotatably connected to the preheating chamber (1).

2. The vertical enameling machine annealing furnace for utilizing waste heat from exhaust gas according to claim 1, characterized in that: An inner outlet sleeve (102) is fixed through the bottom of the preheating chamber (1), and an inner inlet sleeve (101) is fixed through the side of the preheating chamber (1).

3. The vertical enameling machine annealing furnace for utilizing waste heat from exhaust gas according to claim 1, characterized in that: A heat insulation plate (204) is fixed on one side wall of the outer insulation shell (2). The heat insulation plate (204) is fixed on one side of the preheating chamber (1), and a notch is provided on the heat exchange fins (203) at the location of the heat insulation plate (204).

4. The vertical enameling machine annealing furnace for utilizing waste heat from exhaust gas according to claim 3, characterized in that: The outer insulation shell (2) is symmetrically connected to a flue gas pipe (205) on one side. The two flue gas pipes (205) are respectively located above and below the outer insulation shell (2), and the flue gas pipes (205) are fixedly connected in the gap between the preheating chamber (1) and the inner wall of the outer insulation shell (2).

5. A vertical enameling machine annealing furnace for utilizing waste heat from exhaust gas according to claim 2, characterized in that: An outer inlet sleeve (201) is fixedly connected to the inner outlet sleeve (102) at the position corresponding to the outer insulation shell (2), and the inner outlet sleeve (102) and the outer inlet sleeve (201) are fixedly connected. An outer outlet sleeve (202) is fixedly connected to the inner outlet sleeve (102) at the position corresponding to the outer insulation shell (2), and the inner outlet sleeve (102) and the outer outlet sleeve (202) are fixedly connected.

6. A vertical enameling machine annealing furnace for utilizing waste heat from exhaust gas according to claim 5, characterized in that: The bottom of the outer insulation shell (2) is fixed with the annealing furnace body (4). The inner rotating roller (302) is wound with the enameled wire body (303). The enameled wire body (303) passes through the outer wire inlet sleeve (201) and enters the inner wire inlet sleeve (101). It enters the preheating chamber (1) from the inner wire inlet sleeve (101). After the enameled wire body (303) is wound around the inner rotating roller (302), it passes through the inner wire outlet sleeve (102) at the bottom of the preheating chamber (1) and through the outer wire outlet sleeve (202) and extends into the annealing furnace body (4).

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