Constant-temperature insulating paint supply box

Abstract

The utility model discloses a constant temperature insulating paint supply box, which comprises a paint box, a controller, a heating device, a cooling-water machine, an oil tank, a coil pipe, a circulating pump and a temperature sensor, the paint box is arranged in the oil tank, a hot oil cavity is formed between the paint box and the oil tank, the heating device is arranged in the hot oil cavity, and the coil pipe and the temperature sensor are positioned in the paint box. And the coil pipe is connected with the cooling-water machine. The paint box is reasonable in structural design, and when the temperature sensor detects that the temperature of insulating paint in the paint box is higher than the process set temperature, the controller controls the refrigerating machine to refrigerate continuously and circularly to take away heat of the insulating paint until the temperature of the insulating paint in the paint box is reduced to the required temperature. When the temperature sensor detects that the temperature of the insulating paint in the paint box is lower than the process set temperature, the controller controls the heating device to start working, the paint box is heated through the heat conduction oil in the hot oil cavity, the insulating paint in the paint box is heated to the required temperature, and the temperature of the insulating paint in the paint box is controlled to be in a relatively constant temperature state; the temperature of the insulating paint is effectively prevented from being influenced by environment temperature factors and continuous rising of the temperature of the insulating paint caused by continuous painting in the production process, so that consistent paint coating viscosity is ensured, and stable quality in the production process is ensured.

Description

Technical Field

[0001] This utility model relates to the field of paint supply box technology, specifically to a constant temperature insulating paint supply box. Background Technology

[0002] Enameled wire is a major type of winding wire, consisting of a conductor and an insulation layer. The production process mainly involves annealing and softening bare wire, followed by multiple coatings and baking processes. The process of forming the insulation layer first involves coating the conductor surface with an insulating varnish of a certain viscosity, and the varnish supply box is the main component for storing and transporting the insulating varnish.

[0003] The varnish supply box uses a circulating pump to deliver insulating varnish to the varnish tank. When the wire passes through the coating device above the varnish tank, insulating varnish adheres to its surface before it enters the next baking process. Excess insulating varnish flows back into the varnish tank and then back into the varnish supply box, continuously circulating the insulating varnish throughout the process. Controlling the temperature of the insulating varnish during enameling is crucial, as temperature directly affects its viscosity. Coating within the required process temperature range ensures uniformity and adhesion of the varnish film, guaranteeing the stability of the enameled wire product. Excessively high or low temperatures can affect the leveling properties of the insulating varnish, leading to uneven film formation and even particle formation, severely impacting the yield rate of the enameled wire. For example, in winter, the low ambient temperature may cause the insulating varnish temperature in the varnish supply box to be lower than the process temperature; in summer, the high ambient temperature, coupled with the residual heat from baking, can contribute to this problem. During the continuous coating process, after the wire diameter is controlled by molds or felt, excess insulating varnish adhering to the wire flows back into the varnish tank and then back to the varnish supply box. During this process, because the insulating varnish has already undergone heat exchange with the wire, its return to the supply box further increases the temperature of the insulating varnish, making its viscosity uncontrollable. Therefore, it is necessary to control the temperature of the insulating varnish in the supply box within the allowable production range. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a constant temperature insulating varnish supply box with a reasonable structural design that can control the temperature of the insulating varnish within the required temperature range.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A constant-temperature insulating varnish supply box includes a varnish box, a controller, a heating device, a chiller, an oil tank, a coil, a circulating pump, and a temperature sensor. The controller is connected to the heating device, the chiller, the circulating pump, and the temperature sensor. The varnish box is disposed inside the oil tank, and a hot oil cavity is formed between the outer wall of the varnish box and the inner wall of the oil tank. The heating device is disposed inside the hot oil cavity. The coil and the temperature sensor are located inside the varnish box. The coil is connected to the chiller, and the circulating pump is connected to the varnish box.

[0007] In a preferred embodiment of this utility model, the circulating pump is mounted on the paint tank, with the inlet end of the circulating pump extending into the lower part of the paint tank and the outlet end of the circulating pump extending out of the paint tank to form an outlet pipeline.

[0008] As a preferred embodiment of this utility model, the paint outlet pipe is equipped with a filter cylinder and a valve. The filter cylinder can effectively filter out impurities in the insulating paint and ensure the purity of the insulating paint.

[0009] In a preferred embodiment of this invention, two filter cartridges are connected in parallel. This allows for simultaneous use and increases redundancy; even if one filter cartridge malfunctions, the other can still function normally.

[0010] As a preferred embodiment of this utility model, the paint outlet pipe is connected to a return paint pipe that detours inside the paint box, so that the insulating paint inside the paint box circulates continuously, further improving the uniformity and stability of temperature control.

[0011] As a preferred embodiment of this invention, the bottom of the oil tank is equipped with casters. This allows the entire paint supply tank to be easily moved and positioned, improving its flexibility of use.

[0012] In a preferred embodiment of this invention, the varnish tank is equipped with a return box. Excess insulating varnish flows back to the varnish tank and then to the return box for collection, and then flows into the varnish supply tank in a unified manner, allowing the insulating varnish to be continuously recycled.

[0013] In a preferred embodiment of this invention, the paint box is equipped with a paint filling hopper, and the paint filling hopper is equipped with a lid. The paint filling hopper allows for convenient addition of insulating varnish, while the lid prevents dust and impurities from entering the paint box.

[0014] As a preferred embodiment of this utility model, it further includes a touch-up paint pump and a float switch. The float switch is located inside the paint tank, and the touch-up paint pump's touch-up paint pipeline is connected to the paint tank. This allows for automatic monitoring of the insulating varnish level in the paint tank and automatic touch-up paint replenishment when the level falls below a set value, ensuring the continuity and stability of the paint supply.

[0015] As a preferred embodiment of this utility model, the coils are distributed on the four inner walls and bottom surface of the paint box, forming a five-sided surrounding structure, which makes the cooling of the insulating paint more uniform, the cooling contact area larger, and the cooling to the set temperature faster.

[0016] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonably designed. When the temperature sensor detects that the temperature of the insulating varnish in the varnish box is higher than the process set temperature, the controller controls the refrigeration mechanism to continuously circulate and remove the heat from the insulating varnish until the temperature of the insulating varnish in the varnish box drops to the required temperature. When the temperature sensor detects that the temperature of the insulating varnish in the varnish box is lower than the process set temperature, the controller controls the heating device to start working, heating the varnish box through the heat transfer oil in the hot oil chamber, thereby heating the insulating varnish in the varnish box to the required temperature. This achieves a relatively constant temperature control of the insulating varnish in the varnish box, effectively avoiding the influence of ambient temperature factors and the continuous increase in the temperature of the insulating varnish caused by continuous painting during the production process, thus ensuring consistent paint coating viscosity and stable production quality.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 .

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of this utility model. Detailed Implementation

[0022] See Figures 1 to 4 This embodiment provides a constant-temperature insulating varnish supply box, which includes a controller 1, a varnish box 2, a heating device 3, a chiller 4, an oil tank 5, a coil 6, a circulating pump 7, a temperature sensor 8, casters 9, a return box 10, a varnish filling hopper 11, a touch-up pump 12, and a float switch 13. The heating device 3, chiller 4, circulating pump 7, temperature sensor 8, touch-up pump 12, and float switch 13 are respectively connected to and controlled by the controller 1.

[0023] In this embodiment, the heating device 3 is preferably an electric heating tube, the temperature sensor 8 is preferably a thermocouple, and the float switch 13 is preferably a vertical float switch.

[0024] The paint tank 2 is located inside the oil tank 5, forming a hot oil cavity 14 between the outer wall of the paint tank 2 and the inner wall of the oil tank 5. Heat-conducting oil is filled into the hot oil cavity 14. Casters 9 are provided on the bottom surface of the oil tank 5, allowing the entire paint supply tank 2 to be easily moved and positioned, improving its flexibility of use. A return box 10 is provided on the paint tank 2, with an opening on the bottom surface of the return box 10 communicating with the paint tank 2. Preferably, a filter screen is also provided on the opening. Excess insulating varnish flows back to the paint tank and then to the return box 10 for collection, and then flows uniformly into the paint supply tank 2, allowing the insulating varnish to be continuously recycled. A paint filling hopper 11 is provided on the paint tank 2, with a lid. The paint filling hopper 11 allows for convenient and quick addition of insulating varnish, while the lid prevents dust and impurities from entering the paint tank 2.

[0025] The heating device 3 is located inside the hot oil chamber 14. The coil 6 and temperature sensor 8 are located inside the paint tank 2. The coil 6 is connected to the chiller 4. Preferably, the coil is distributed on the four inner walls and bottom surface of the paint tank, forming a five-sided surrounding structure, which makes the cooling of the insulating paint more uniform, the cooling contact area larger, and the cooling to the set temperature faster. The circulating pump 7 is connected to the paint tank 2.

[0026] The circulating pump 7 is mounted on the varnish tank 2. The inlet end of the circulating pump 7 extends into the lower part of the varnish tank 2, and the outlet end extends out of the varnish tank 2 to form an outlet pipe. A filter cartridge 15 and a valve are provided on the outlet pipe. The filter cartridge 15 effectively filters out impurities in the insulating varnish, ensuring its purity. Preferably, two filter cartridges 15 are used in parallel. This allows for simultaneous use and increases redundancy; even if one filter cartridge 15 malfunctions, the other can still function normally. Preferably, a return pipe is connected to the outlet pipe, bypassing the varnish tank 2, allowing the insulating varnish in the varnish tank 2 to circulate continuously, further improving the uniformity and stability of temperature control.

[0027] The float switch 13 is located inside the paint tank 2, and the paint replenishment pipeline of the paint pump 12 is connected to the paint tank 2. It can automatically monitor the level of insulating varnish in the paint tank 2 and automatically replenish varnish when the level is lower than a set value, ensuring the continuity and stability of the varnish supply.

[0028] During operation, when temperature sensor 8 detects that the temperature of the insulating varnish in the varnish tank 2 is higher than the process set temperature, controller 1 controls the chiller to add cooling water to the inlet of coil 6 and return it to the chiller from the outlet of coil 6. Because coil 6 is in direct contact with the insulating varnish and has a sufficiently large number of coils, a large contact area is achieved. Through heat exchange, heat is continuously transferred from the hotter insulating varnish to the cooler coil 6, and the cooling water continuously carries away the heat, causing the insulating varnish temperature to drop. The cooling water carrying away the heat flows back to the chiller from the outlet of coil 6. During this process, the chiller continuously cools the cooling water, causing its temperature to drop, and then it is reintroduced from the inlet of coil 6. This process continuously circulates, carrying away heat from the insulating varnish until temperature sensor 8 detects that the insulating varnish temperature meets the set value.

[0029] When temperature sensor 8 detects that the temperature of the insulating varnish inside the varnish tank 2 is lower than the process set temperature, controller 1 controls heating device 3 to start working, heating the heat transfer oil in hot oil chamber 14. The heat transfer oil comes into contact with the outer wall of varnish tank 2, and through heat exchange, heat is continuously transferred from the hotter heat transfer oil through the tank wall to the colder insulating varnish. At this time, the temperature of the insulating varnish continues to rise until it meets the set value, and controller 1 controls heating device 3 to stop working.

[0030] Through the above control, the temperature of the insulating varnish in the varnish box 2 is kept at a relatively constant temperature, effectively avoiding the influence of ambient temperature factors and the continuous increase in the temperature of the insulating varnish caused by continuous painting during the production process. This ensures that the varnish temperature is controlled within the production process range, thereby ensuring consistent varnish coating viscosity, stable production process quality, and simple and convenient operation.

[0031] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. Devices with other structures obtained using the same or similar structures as described in the above embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. A constant-temperature insulating varnish supply box, comprising a varnish tank, characterized in that, It also includes a controller, a heating device, a chiller, an oil tank, a coil, a circulating pump, and a temperature sensor. The controller is connected to the heating device, the chiller, the circulating pump, and the temperature sensor. The paint box is located inside the oil tank, and a hot oil cavity is formed between the outer wall of the paint box and the inner wall of the oil tank. The heating device is located inside the hot oil cavity. The coil and the temperature sensor are located inside the paint box. The coil is connected to the chiller, and the circulating pump is connected to the paint box. The paint box is equipped with a return box, and excess insulating paint will flow back to the paint tank and then flow to the return box for collection, and then flow into the paint supply box in a unified manner. The coils are distributed on the four inner walls and bottom surface of the paint box.

2. The constant temperature insulating varnish supply box according to claim 1, characterized in that: The circulating pump is installed on the paint tank, with the inlet end of the circulating pump extending into the lower part of the paint tank and the outlet end of the circulating pump extending out of the paint tank to form a paint outlet pipeline.

3. The constant temperature insulating varnish supply box according to claim 2, characterized in that: The paint outlet pipe is equipped with a filter cylinder and a valve.

4. The constant temperature insulating varnish supply box according to claim 3, characterized in that: The filter cartridges are in the form of two cartridges, which are connected in parallel.

5. The constant temperature insulating varnish supply box according to claim 3, characterized in that: The paint outlet pipe is connected to a return paint pipe that detours within the paint tank.

6. The constant temperature insulating varnish supply box according to claim 1, characterized in that: The bottom of the fuel tank is equipped with casters.

7. The constant temperature insulating varnish supply box according to claim 1, characterized in that: The paint box is equipped with a paint filling hopper, and the paint filling hopper is equipped with a lid.

8. The constant temperature insulating varnish supply box according to any one of claims 1-7, characterized in that: It also includes a touch-up paint pump and a float switch, the float switch being located inside the paint tank, and the touch-up paint pump's touch-up paint pipeline being connected to the paint tank.

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