A slot for enameled wire felt painting
By using a multi-chamber design and a partition structure for the enameled wire felt coating tank, the problem of uneven paint film thickness caused by unstable paint flow is solved, achieving uniform paint flow and stable temperature control, thus improving the quality of the enameled wire and the lifespan of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING JINTIAN COPPER CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-19
AI Technical Summary
The design of the existing paint tank leads to unstable paint flow, resulting in uneven paint film thickness and affecting the quality of the enameled wire.
It adopts a multi-chamber design and a partition structure, with paint inlets of different diameters and evenly distributed paint overflow outlets. Combined with a temperature control module and sensor monitoring, it ensures uniform flow of paint and stable temperature. Stainless steel is used to improve corrosion resistance.
It achieves uniform flow and temperature control of the paint liquid, improves the uniformity of the paint film and the quality stability of the enameled wire, extends the service life of the equipment, and reduces production costs.
Smart Images
Figure CN224383979U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of enameled wire manufacturing technology, and in particular to an enameled wire felt coating tank. Background Technology
[0002] In the enameled wire production process, the coating process is a crucial step that determines the quality of the enameled wire. Existing coating tanks employ an open varnish storage chamber combined with a felt coating structure. A circulating pump draws varnish from the varnish tank, filters out impurities, and then transports it through the inlet to the varnish storage tank in the coating area. The lower part of the coating roller is immersed in the varnish in the storage tank, and the roller's continuous rotation carries the varnish to the top, where the copper wire passes through a groove at the top of the roller to achieve coating. Excess varnish that does not adhere to the copper wire overflows from the overflow port at the edge of the storage tank into the adjacent return tank, and then returns to the varnish tank through a return pipe, forming a circulating varnish refill system.
[0003] However, since the paint storage chamber has only one inlet, the paint entering the tank creates a significant impact, leading to localized turbulence and affecting overall flow stability. Simultaneously, the overflow outlets are poorly positioned, distributed on both sides of the tank, hindering paint overflow in the central area. This causes the paint in the central area to remain stagnant for extended periods, allowing moisture and solvents to evaporate and increasing viscosity. In areas of high viscosity, more copper wire paint adheres, resulting in a thicker enamel film; conversely, in areas of low viscosity, less copper wire paint adheres, resulting in a thinner film, severely impacting film uniformity. Utility Model Content
[0004] The purpose of this utility model is to provide a coating groove for enameled wire felt to solve the above-mentioned technical problems.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A coating tank for enameled wire felt includes a tank body, a partition, a paint inlet pipe, and a temperature control module. The tank body has several chambers inside, and each chamber is provided with a partition, which divides the chamber into a paint storage tank and a return tank. Each paint storage tank is provided with the paint inlet pipe and the temperature control module. The paint inlet pipe has several paint inlet holes, and the partition has an overflow port.
[0007] Preferably, the inner diameter of the paint inlet holes is arranged to gradually increase along the flow direction of the paint liquid.
[0008] Preferably, each of the partitions is provided with a plurality of paint overflow outlets, which are evenly distributed along the length of the partition and are located at the same height.
[0009] Preferably, the temperature control module includes a temperature sensor and a heating plate, which are installed inside the paint storage tank.
[0010] Preferably, the tank is made of stainless steel.
[0011] Preferably, the system also includes a speed sensor and a coating roller. Each of the paint storage tanks is provided with a coating roller, and the speed sensor is provided on the coating roller.
[0012] Preferably, a liquid level sensor is also included, and each of the paint storage tanks is provided with a liquid level sensor.
[0013] As a further preferred embodiment, the heating plate is positioned close to the paint inlet pipe.
[0014] The above technical solution has the following advantages or beneficial effects:
[0015] (1) In this utility model, by opening paint inlet holes of different diameters on the paint inlet pipe, the flow rate error of the paint liquid flowing out of each hole is controlled within a very small range, ensuring that the paint liquid enters the paint storage tank evenly; and with the setting of the paint overflow port on the partition, the paint liquid flows evenly in the paint storage tank, ensuring the consistency of paint viscosity.
[0016] (2) In this utility model, the tank and the partition are made of stainless steel. Compared with traditional carbon steel, its excellent corrosion resistance effectively resists the erosion of chemical solvents in paint, extending the service life of the paint tank by more than 3 times. This not only reduces the downtime and cost caused by frequent equipment replacement, but also avoids the pollution of paint liquid by impurities caused by equipment corrosion, ensuring the quality stability of enameled wire.
[0017] (3) In this utility model, by setting a temperature sensor and a heating plate, combined with an external controller or a PID algorithm to achieve closed-loop temperature control, the precise temperature control effectively avoids changes in paint viscosity caused by temperature fluctuations, ensuring that the paint liquid is always in the best coating state, and further improving the stability and quality consistency of enameled wire coating.
[0018] (4) In this utility model, by setting the speed sensor, the speed of the paint roller can be monitored in real time. When the speed deviation exceeds 5%, an alarm will be automatically triggered, so that the operator can detect and adjust in time to ensure the stability of the paint roller speed.
[0019] (5) In this utility model, by setting up a liquid level sensor, the liquid level height of the paint in the paint storage tank can be monitored in real time, ensuring good and consistent contact between the enameled wire and the paint, effectively avoiding the phenomenon of excessively thick or thin paint or missed coating caused by liquid level fluctuations, ensuring the integrity and uniformity of the enameled wire coating, improving the product yield, reducing product scrap due to coating defects, and reducing production costs. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the enameled wire felt coating tank in this utility model.
[0021] In the diagram: 1. Tank; 2. Baffle plate; 3. Paint inlet pipe; 4. Paint storage tank; 5. Return tank; 6. Paint inlet hole; 7. Paint overflow port; 8. Temperature sensor; 9. Heating plate; 10. Speed sensor; 11. Painting roller; 12. Liquid level sensor. Detailed Implementation
[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.
[0025] Figure 1 This is a schematic diagram of the enameled wire felt coating tank in this utility model. Please refer to [link / reference]. Figure 1The diagram illustrates a preferred embodiment of a coating tank for enameled wire felt. The tank includes a tank body 1, a partition 2, a paint inlet pipe 3, and a temperature control module. The tank body 1 has several chambers, each divided by a partition 2 into a paint storage tank 4 and a return tank 5. Each paint storage tank 4 contains a paint inlet pipe 3 and a temperature control module. The paint inlet pipe 3 has several paint inlet holes 6, and the partition 2 has an overflow outlet 7. In this embodiment, the tank body 1 has two independent chambers, each separated by a partition 2 to form a paint storage tank 4 and a return tank 5. The paint storage tank 4 stores the paint liquid, and the enameled wire is coated within it. The paint inlet pipe 3 has several paint inlet holes 6. (See also...) Figure 1 As shown, three paint inlet holes 6 are provided, with one at the tail of the paint inlet pipe 3. By opening several paint inlet holes 6 on the paint inlet pipe 3, it is possible to avoid large impacts when the paint enters the paint storage tank 4, which could lead to local turbulence and affect the overall flow stability. The paint overflow port 7 is located on the upper surface of the baffle plate 2, which is lower than the height of the tank body 1. The presence of the paint overflow port 7 ensures that the paint receives uniform resistance and guidance during flow, preventing local flow rates from being too fast or too slow, and ensuring uniform flow of the paint throughout the paint storage tank 4, thereby guaranteeing the consistency of the paint viscosity. In this embodiment, a paint inlet is provided on the side wall of each paint storage tank 4, and the paint inlet pipe 3 passes through the paint inlet and enters the paint storage tank 4. The paint inlet pipe 3 and the paint inlet are sealed together to prevent paint leakage.
[0026] Furthermore, as a preferred embodiment, the inner diameter of several paint inlet holes 6 is gradually increased along the flow direction of the paint liquid. The size of the diameter of the paint inlet holes 6 can be accurately calculated by external fluid simulation software (such as ANSYS Fluent) to calculate the pressure loss of the paint liquid along the paint inlet pipe 3, so that the diameter of the holes near the paint liquid inlet is smaller, while the diameter of the holes at the end gradually increases. This design can effectively compensate for the flow difference caused by the pressure loss along the flow, and ensure that the flow error of the paint liquid flowing out of each hole is strictly controlled within ±2%. This design allows the paint liquid to enter the paint storage tank 4 more evenly, improving the consistency and uniformity of the enameled wire coating.
[0027] Furthermore, as a preferred embodiment, each partition 2 is provided with a plurality of paint overflow ports 7, which are evenly distributed along the length of the partition 2 and are located at the same height. In this embodiment, by setting evenly distributed paint overflow ports 7, the paint liquid can be subjected to uniform resistance and guidance during flow, avoiding situations where the local flow rate is too fast or too slow. The paint liquid can flow evenly throughout the entire paint storage tank 4, thereby ensuring the consistency of paint viscosity and effectively avoiding problems such as uneven paint film thickness caused by inconsistent paint viscosity. See also Figure 1As shown, each partition 2 is provided with three paint overflow ports 7. The spacing between the three paint overflow ports 7 and the spacing between the paint overflow ports 7 and the edge of the partition 2 are equal to ensure uniform flow of the paint liquid.
[0028] Furthermore, as a preferred embodiment, the temperature control module includes a temperature sensor 8 and a heating plate 9. The temperature sensor 8 and the heating plate 9 are installed inside the paint storage tank 4, with the heating plate 9 positioned close to the paint inlet pipe 3. In this embodiment, the heating plate 9 is an electric heating plate. A through hole is provided on the bottom wall of the paint storage tank 4 for the power cord of the electric heating plate to pass through. The power cord and the through hole are sealed together to prevent paint leakage. The temperature sensor 8 can be installed on the bottom wall of the paint storage tank 4 with screws to detect the temperature of the paint. Both the temperature sensor 8 and the heating plate 9 are connected to an external controller (microcontroller or PLC controller), which facilitates automatic control of the heating plate 9. When the detected paint temperature is lower or higher than a preset value, the controller can automatically control the heating plate 9 to work or stop working. This achieves closed-loop temperature control, effectively avoiding changes in paint viscosity caused by temperature fluctuations, thereby ensuring that the paint maintains a stable viscosity during the coating process of the enameled wire, further improving the coating quality. In other embodiments, temperature closed-loop control can be achieved based on a PID algorithm, with a temperature control accuracy of ±0.5℃ and a response time of <30 seconds, effectively avoiding changes in paint viscosity caused by temperature fluctuations.
[0029] Furthermore, as a preferred embodiment, the tank 1 is made of stainless steel, and the partition 2 is also made of stainless steel. Stainless steel has excellent corrosion resistance and can effectively resist the erosion of chemical solvents in paint. Compared with traditional carbon steel, the service life of a stainless steel painting tank is extended by more than three times, reducing equipment maintenance costs and replacement frequency. At the same time, the good thermal conductivity of stainless steel helps the heating plate 9 to conduct heat quickly and evenly, and the arrangement of the heating plate 9 facilitates the heating of the paint liquid.
[0030] Furthermore, as a preferred embodiment, it also includes a speed sensor 10 and a coating roller 11. Each paint storage tank 4 is provided with a coating roller 11, and a speed sensor 10 is provided on the coating roller 11. In this embodiment, bearings are provided at both ends of the coating roller 11, and the coating roller 11 is rotatably connected to both sides of the paint storage tank 4 through the bearings. One end of the coating roller 11 extends out of the paint storage tank 4 and is connected to an external motor. The motor drives the coating roller 11 to rotate, and the speed sensor 10 is used to monitor the speed of the coating roller 11. The speed sensor 10 can be installed on the coating roller 11 with screws. Both the speed sensor 10 and the motor can be connected to an external controller, which facilitates real-time monitoring of the speed of the coating roller 11 and can transmit the detected speed information to the controller. The controller can preset the rotation speed of the coating roller 11 and control the motor to drive the coating roller 11 to rotate at the preset speed. Furthermore, when the rotation sensor detects that the rotational speed deviation of the coating roller 11 exceeds a preset value by more than 5%, an external alarm will automatically sound to serve as a reminder, allowing staff to make timely adjustments and ensure that the coating roller 11 operates at a stable speed, thereby guaranteeing the consistency of the paint film thickness on the enameled wire surface. The alarm is connected to an external controller. In this embodiment, felt is evenly distributed on the outer wall of the coating roller 11 to facilitate coating the enameled wire.
[0031] Furthermore, as a preferred embodiment, a liquid level sensor 12 is also included, with each paint storage tank 4 equipped with a liquid level sensor 12. In this embodiment, the liquid level sensor 12 can be mounted on the bottom wall of the paint storage tank 4 using screws, see [reference]. Figure 1 As shown, the liquid level sensor 12 can provide real-time feedback on the paint level, ensuring good and consistent contact between the enameled wire and the paint during the coating process. When the liquid level fluctuates, the operator can take timely measures to adjust it, ensuring a uniform paint film thickness. This effectively avoids problems such as excessively thick or thin paint coating, or even missed coating, in some areas of the enameled wire due to liquid level fluctuations, thus improving the coating quality of the enameled wire.
[0032] During operation, an external circulation pump draws paint from the paint tank and delivers it to the paint storage tank 4 via the paint inlet pipe 3. The paint enters the storage tank 4 through the paint inlet hole 6 on the paint inlet pipe 3. Then, an external controller controls the heating plate 9 to heat the paint to a suitable temperature. The motor then drives the coating roller 11 to rotate, bringing the paint from the bottom to the top, thus coating the enameled wire. During the coating process, the temperature sensor 8 and the level sensor 12 monitor the temperature and level changes of the paint in the storage tank 4 in real time, while the speed sensor 10 monitors the rotation speed of the coating roller 11. If any abnormality occurs, the external controller will activate an alarm to sound, allowing staff to make adjustments. The paint in the storage tank 4 can enter the return tank 5 through the overflow port 7 on the partition 2. The bottom of the return tank 5 can return to the external paint tank through a return pipe, forming a circulating return coating system. The paint in the paint tank needs to be filtered before entering the storage tank 4 to remove impurities.
[0033] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A coating tank for enameled wire felt, comprising a tank body, characterized in that, It also includes a partition, a paint inlet pipe and a temperature control module. The tank body is provided with several chambers. Each chamber is provided with a partition, which divides the chamber into a paint storage tank and a return tank. Each paint storage tank is provided with the paint inlet pipe and the temperature control module. The paint inlet pipe has several paint inlet holes, and the partition has an overflow port.
2. The enameled wire felt coating tank as described in claim 1, characterized in that, The inner diameter of several of the paint inlets is gradually increased along the flow direction of the paint liquid.
3. The enameled wire felt coating tank as described in claim 1, characterized in that, Each of the partitions is provided with a plurality of paint overflow outlets, which are evenly distributed along the length of the partition and are located at the same height.
4. The enameled wire felt coating tank as described in claim 1, characterized in that, The temperature control module includes a temperature sensor and a heating plate, which are installed inside the paint storage tank.
5. The enameled wire felt coating tank as described in claim 1, characterized in that, The tank is made of stainless steel.
6. The enameled wire felt coating tank as described in claim 1, characterized in that, It also includes a speed sensor and a coating roller. Each of the paint storage tanks is provided with a coating roller, and the coating roller is provided with the speed sensor.
7. The enameled wire felt coating tank as described in claim 1, characterized in that, It also includes a liquid level sensor, and each of the paint storage tanks is equipped with a liquid level sensor.
8. The enameled wire felt coating tank as described in claim 4, characterized in that, The heating plate is positioned close to the paint inlet pipe.