Horizontal enameling machine annealing furnace using waste heat of exhaust gas for preheating

Abstract

The utility model discloses a horizontal enamelling machine annealing furnace utilizing waste heat of exhaust gas for preheating, and relates to the technical field of annealing furnaces. The device comprises a heat preservation shell, a driving motor, a supporting frame and a fixing sleeve, the top of the heat preservation shell is fixedly communicated with the fixing sleeve, a built-in fan is fixed to the inner wall of the fixing sleeve, the supporting frame is fixed to the portion, below the built-in fan, of the inner wall of the fixing sleeve, a smoke coil pipe is arranged above the supporting frame, and the driving motor is fixed to the portion, on one side of the fixing sleeve, of the top of the heat preservation shell. An output shaft of the driving motor penetrates through the top of the heat preservation shell, and a connecting roller is fixed to the bottom end of the output shaft. By arranging the heat preservation shell, the driving motor, the supporting frame and the fixing sleeve, the problems that the surface of an enamelled wire is polluted due to the fact that smoke is directly sprayed into the annealing environment when the enamelled wire is annealed by the annealing furnace, and the utilization rate of heat in the annealing process of the enamelled wire is not high enough are solved.

Description

Technical Field

[0001] This utility model belongs to the field of annealing furnace technology, and in particular relates to a horizontal enameling machine annealing furnace that utilizes the waste heat of exhaust gas for preheating. Background Technology

[0002] Enamelled wire is a major type of winding wire, consisting of a conductor and an insulation layer. The bare wire is softened by annealing, then undergoes multiple coatings and baking processes. To produce enamelled wire, after initial forming, the wire is fed into a horizontal enameling machine annealing furnace for annealing, and then into the enameling machine for coating. The horizontal enameling machine annealing furnace heats the enamelled wire to a certain temperature and then slowly cools it to eliminate internal stress and improve the material's microstructure and properties. During the heating process, the heat flow circulates repeatedly within the furnace, resulting in good temperature uniformity, no noise, no environmental pollution, low heat storage capacity, and minimal heat loss. However, it still has the following drawbacks in practical use:

[0003] If flue gas is directly fed into the annealing furnace during its operation, pollutants contained in the flue gas will adhere directly to the annealed enameled wire, causing dirt to adhere to the surface of the enameled wire and affecting the safety of the annealing process.

[0004] Secondly, during the operation, after the heat of the flue gas is recovered, it is transported to the annealing furnace. After the enameled wire is preheated in the annealing furnace, the amount of heat recovered during the annealing process of the enameled wire is relatively small, which affects the utilization rate of heat in the flue gas. Utility Model Content

[0005] The purpose of this invention is to provide a horizontal enameling machine annealing furnace that utilizes the waste heat of exhaust gas for preheating. By setting up an insulation shell, a drive motor, a support frame, and a fixing sleeve, it solves the problems of pollution on the surface of the enameled wire caused by directly injecting flue gas into the annealing environment during the annealing process, and the insufficient heat utilization rate during the annealing process.

[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 horizontal enameling machine annealing furnace that utilizes the waste heat of exhaust gas for preheating. It includes an insulation shell, a drive motor, a support frame, and a fixing sleeve. The top of the insulation shell is fixedly connected to the fixing sleeve. An internal fan is fixed to the inner wall of the fixing sleeve. The support frame is fixed to the inner wall of the fixing sleeve below the internal fan. A flue gas coil is installed above the support frame. The drive motor is fixed to the top of the insulation shell on one side of the fixing sleeve. The output shaft of the drive motor passes through the top of the insulation shell, and a connecting roller is fixed to the bottom end of the output shaft. During operation, the insulation shell retains the waste heat of the flue gas entering the furnace. The drive motor drives the connecting roller to rotate, and as the connecting roller rotates, it winds the enameled wire to be annealed. The flue gas coil is mounted on the support frame, and the fixing sleeve fixes the support frame and the internal fan to it.

[0008] Furthermore, a connecting strip is fixed to the inner bottom of the insulation shell, and a softening tube is fixed to the top of the connecting strip. The softening tube is located below the fixing sleeve, and the insulation shell connects the softening tube to the insulation shell through the connecting strip.

[0009] Furthermore, the connecting roller is vertically arranged inside the insulation shell, and the enameled wire body is wound around the periphery of the connecting roller. After the enameled wire body passes through one side of the insulation shell and is wound around the periphery of the connecting roller, it passes through the softening tube to heat the enameled wire body.

[0010] Furthermore, a heat insulation plate is fixed inside the insulation shell on the side away from the connecting roller. The enameled wire body passes through the heat insulation plate and extends out of the heat insulation plate, thereby reducing heat loss in the insulation shell.

[0011] Furthermore, a support frame is fixed on the inner wall of the support frame, the flue gas coil is fixed on the top of the support frame, and the two ends of the flue gas coil pass through the two ends of the fixing sleeve respectively. The support frame supports and connects the flue gas coil therein.

[0012] Furthermore, the top of the fixed sleeve is fixedly connected to a connecting cover, and the top of the connecting cover is fixedly connected to a connecting square tube. The connecting square tube is arranged in an inverted U-shape. The end of the connecting square tube away from the connecting cover is fixedly connected to the top of the insulation shell. The drive motor is located between the end of the connecting square tube connected to the insulation shell and the fixed sleeve, and circulates hot air into the fixed sleeve through the connecting square tube.

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

[0014] This invention solves the problem of surface contamination of enameled wire caused by directly injecting flue gas into the annealing environment during annealing in an annealing furnace by setting up an insulation shell, a drive motor, a support frame, and a fixing sleeve. When the built-in fan is activated, it blows air onto the flue gas coil. Simultaneously, the heat from the flue gas passing through the coil is carried by the air to the insulation shell, and then transported to the enameled wire body around the connecting roller, heating the wire body. This allows the heat in the exhaust gas to be recovered and utilized during operation. In the annealing process, the enameled wire is preheated, and the flue gas undergoes sufficient heat exchange as it passes through the flue gas coil, preventing surface contamination of the enameled wire.

[0015] This invention solves the problem of insufficient heat utilization in the annealing furnace during the annealing of enameled wire by setting up an insulation shell, a drive motor, a support frame, and a fixing sleeve. When the built-in fan is working, the air is delivered to the fixing sleeve. After the heat exchange flue gas coil passes through the flue gas and absorbs heat, the heat is delivered to the insulation shell by the air, and then delivered to the enameled wire body to preheat it. After that, the heat is delivered to the connecting square tube, and then back to the connecting cover through the connecting square tube. From the connecting cover, the heat is delivered to the fixing sleeve, making the heat utilization rate of the annealing furnace higher during the annealing of enameled wire. 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 This is a three-dimensional view of a horizontal enameling machine annealing furnace that utilizes the waste heat of exhaust gas for preheating.

[0018] Figure 2 This is a three-dimensional view of the insulation shell after it has been partially cut open.

[0019] Figure 3 This is a three-dimensional structural diagram of the drive motor;

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

[0021] Figure 5 This is a three-dimensional view of the fixed sleeve in half section.

[0022] Figure 6 This is a three-dimensional view of the complete structure of a horizontal enameling machine annealing furnace that utilizes the waste heat of exhaust gas for preheating.

[0023] Figure label:

[0024] 1. Insulation shell; 101. Connecting strip; 102. Softening tube; 103. Heat insulation board; 2. Drive motor; 201. Connecting roller; 202. Enamelled wire body; 3. Support frame; 301. Support bracket; 302. Flue gas coil; 4. Fixing sleeve; 401. Built-in fan; 402. Connecting cover; 403. Connecting square tube. Detailed Implementation

[0025] 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

[0026] Please see Figure 1-5 This utility model relates to a horizontal enameling machine annealing furnace that utilizes the waste heat of exhaust gas for preheating. It includes an insulation shell 1, a drive motor 2, a support frame 3, and a fixing sleeve 4. The top of the insulation shell 1 is fixedly connected to the fixing sleeve 4. When the insulation shell 1 is in operation, it retains heat within it. The fixing sleeve 4 protects the support frame 3 within the insulation shell. An internal fan 401 is fixed to the inner wall of the fixing sleeve 4, which transfers heat from the circulating flue gas to the insulation shell 1. Below the internal fan 401, the support frame 3 is fixed to the inner wall of the fixing sleeve 4, and a flue gas coil 302 is connected to the fixing sleeve 4 via the support frame 3. A flue gas coil 302 is installed above the support frame 3. Flue gas is transported through the flue gas coil 302 and passes through the fixed sleeve 4. When the flue gas passes through, the heat in the flue gas is transferred to the flue gas coil 302 and carried away by the air blown by the built-in fan 401. The flue gas then flows into the insulation shell 1. A drive motor 2 is fixed to the top of the insulation shell 1 on one side of the fixed sleeve 4. When the drive motor 2 is working, it drives the connecting roller 201 to rotate. The output shaft of the drive motor 2 passes through the top of the insulation shell 1 and the connecting roller 201 is fixed to the bottom end of the output shaft. As the connecting roller 201 rotates, it drives the enameled wire body 202 to move into the softening tube 102.

[0027] Specifically, a connecting strip 101 is fixed to the bottom of the inner part of the insulation shell 1, and a softening tube 102 is fixed to the top of the connecting strip 101. The softening tube 102 is located below the fixing sleeve 4. The insulation shell 1 is connected to the softening tube 102 through the connecting strip 101, and the softening tube 102 further heats the enameled wire body 202.

[0028] Furthermore, the connecting roller 201 is vertically arranged inside the insulation shell 1, and the enameled wire body 202 is wound around the periphery of the connecting roller 201. After the enameled wire body 202 passes through one side of the insulation shell 1 and is wound around the periphery of the connecting roller 201, it passes through the softening tube 102. This allows the enameled wire body 202 to absorb the heat of the flue gas and then be transported to the softening tube 102 for heating, thereby reducing the energy required for the softening tube 102 to heat the enameled wire body 202 for annealing.

[0029] Furthermore, a heat insulation plate 103 is fixed inside the heat insulation shell 1 on the side away from the connecting roller 201. The enameled wire body 202 passes through the heat insulation plate 103 and extends out of the heat insulation plate 103. The heat insulation shell 1 is protected from heat loss through the heat insulation plate 103. The end of the heat insulation shell 1 near the heat insulation plate 103 is connected to the equipment for subsequent processing of enameled wire.

[0030] Furthermore, a support frame 301 is fixed on the inner wall of the support frame 3, and a flue gas coil 302 is fixed on the top of the support frame 301. The two ends of the flue gas coil 302 pass through the two ends of the fixing sleeve 4 respectively. The two ends of the flue gas coil 302 are respectively connected to the equipment for conveying the polyester enamel of the enameled wire through catalytic combustion and drying the flue gas of the enameled wire and the exhaust fan. When the support frame 3 is working, the flue gas coil 302 is connected to it through the support frame 301.

[0031] The operation process of this embodiment is as follows: When working, the built-in fan 401 is first started. When working, the built-in fan 401 blows air onto the flue gas coil 302. At the same time, the heat of the flue gas passing through the flue gas coil 302 is carried by the air to the insulation shell 1 and then transported to the enameled wire body 202 on the periphery of the connecting roller 201 in the insulation shell 1 to heat the enameled wire body 202. This allows the heat in the exhaust gas to be recovered and utilized during operation. In the annealing process of the enameled wire, the enameled wire is preheated, and the flue gas can fully exchange heat when passing through the flue gas coil 302. Specific Implementation Example 2

[0032] Please see Figure 1-6 Based on the first specific embodiment, the top of the fixed sleeve 4 is fixedly connected to the connecting cover 402, and the top of the connecting cover 402 is fixedly connected to the connecting square tube 403. The connecting square tube 403 is arranged in an inverted U shape. The end of the connecting square tube 403 away from the connecting cover 402 is fixedly connected to the top of the insulation shell 1. The drive motor 2 is arranged between the end of the connecting square tube 403 connected to the insulation shell 1 and the fixed sleeve 4. The fixed sleeve 4 is connected to the connecting square tube 403 through the connecting cover 402 and to the insulation shell 1 through the connecting square tube 403, so that the air after preheating the enameled wire body 202 is delivered to the connecting square tube 403 and flows back to the connecting cover 402 through the connecting square tube 403.

[0033] The operation process of this embodiment is as follows: When working, the air is delivered to the fixed sleeve 4 when the built-in fan 401 is working. After the heat exchange flue gas coil 302 passes through the heat of the flue gas, the heat is delivered to the insulation shell 1 under the drive of the air, and then delivered to the enameled wire body 202. After the enameled wire body 202 is preheated, it is delivered to the connecting square tube 403, and then flows back to the connecting cover 402 through the connecting square tube 403, and is delivered to the fixed sleeve 4 in the connecting cover 402.

[0034] 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.

[0035] 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 horizontal enameling machine annealing furnace that utilizes waste heat from exhaust gas for preheating, comprising an insulation shell (1), a drive motor (2), a support frame (3), and a fixing sleeve (4), characterized in that: The top of the insulation shell (1) is fixedly connected to a fixed sleeve (4), and an internal fan (401) is fixed on the inner wall of the fixed sleeve (4). A support frame (3) is fixed on the inner wall of the fixed sleeve (4) below the internal fan (401). A flue gas coil (302) is provided above the support frame (3). A drive motor (2) is fixed on the top of the insulation shell (1) on one side of the fixed sleeve (4). The output shaft of the drive motor (2) passes through the top of the insulation shell (1) and a connecting roller (201) is fixed at the bottom of the output shaft.

2. The horizontal enameling machine annealing furnace using waste heat from exhaust gas for preheating according to claim 1, characterized in that: The inner bottom of the heat insulation shell (1) is fixed with a connecting strip (101), and the top of the connecting strip (101) is fixed with a softening tube (102). The softening tube (102) is located below the fixing sleeve (4).

3. A horizontal enameling machine annealing furnace using waste heat from exhaust gas for preheating, as described in claim 2, is characterized in that: The connecting roller (201) is vertically arranged inside the heat insulation shell (1). The connecting roller (201) is surrounded by an enameled wire body (202). The enameled wire body (202) passes through one side of the heat insulation shell (1) and is wrapped around the connecting roller (201) before passing through the softening tube (102).

4. A horizontal enameling machine annealing furnace using waste heat from exhaust gas for preheating, as described in claim 3, is characterized in that: A heat insulation plate (103) is fixed inside the heat insulation shell (1) on the side away from the connecting roller (201), and the enameled wire body (202) extends out of the heat insulation plate (103) after passing through the heat insulation plate (103).

5. A horizontal enameling machine annealing furnace using waste heat from exhaust gas for preheating, as described in claim 1, is characterized in that: A support frame (301) is fixed on the inner wall of the support frame (3), and the flue gas coil (302) is fixed on the top of the support frame (301). The two ends of the flue gas coil (302) pass through the two ends of the fixing sleeve (4).

6. A horizontal enameling machine annealing furnace for preheating using waste heat from exhaust gas, as described in claim 1, is characterized in that: The top of the fixed sleeve (4) is fixedly connected to the connecting cover (402), and the top of the connecting cover (402) is fixedly connected to the connecting square tube (403). The connecting square tube (403) is arranged in an inverted U-shape. The end of the connecting square tube (403) away from the connecting cover (402) is fixedly connected to the top of the heat insulation shell (1). The drive motor (2) is arranged between the end of the connecting square tube (403) connected to the heat insulation shell (1) and the fixed sleeve (4).

Images