An automatic paint dipping device

Abstract

The utility model relates to an automatic paint dipping device, including sealed tube, controller, temperature control subassembly, sensor component, temperature control subassembly sets up in sealed tube, and sensor component is used for detecting temperature, liquid level, air pressure in sealed tube, the top of sealed tube is equipped with first interface, second interface respectively, is equipped with first electromagnetic valve on first interface, and first electromagnetic valve is connected with vacuum pump through pipeline, and the second interface is connected with the three -way joint, and two interfaces of three -way joint are equipped with second electromagnetic valve, third electromagnetic valve respectively, and second electromagnetic valve is connected with air compressor through pipeline, and third electromagnetic valve is linked with outside, and the bottom of sealed tube is equipped with third interface, and is equipped with bottom valve on third interface, through with pre -drying, vacuum dehumidification, dipping paint, drying etc.

Description

Technical Field

[0001] This utility model relates to the field of vacuum impregnation technology, and specifically to an automatic impregnation device. Background Technology

[0002] In the manufacturing and maintenance of electric motors, transformers, and various electrical appliances, winding insulation treatment is a core process to ensure their insulation performance, moisture resistance, and service life. With the development of electrical equipment technology, vacuum pressure impregnation has become one of the more advanced processes in the field of winding insulation treatment. This process involves pre-drying to remove moisture from inside the winding, vacuum impregnation to remove air and allow the insulating varnish to fully penetrate into the fine gaps, pressure impregnation to reinforce the filling of the varnish, and drying and curing to form a uniform and dense insulation layer, which can significantly improve the stability of winding insulation and its resistance to environmental interference.

[0003] However, the vacuum pressure impregnation equipment currently used in the industry generally adopts a design mode of independent enclosures for pre-drying, vacuum impregnation, pressure impregnation, and drying processes. Each process requires a separate sealed enclosure and supporting control system, resulting in large overall equipment size, complex structure, and high cost, which can only be used in large-scale production of large manufacturing enterprises. This limitation prevents many small and medium-sized repair shops and small repair workshops from introducing this advanced technology due to equipment costs and space constraints. Repair personnel are forced to use relatively outdated insulation treatment methods such as brushing insulating varnish and simple soaking under normal pressure: brushing is prone to uneven insulation layer thickness and local omissions; normal pressure soaking is difficult to remove air and moisture from inside the windings, and the insulating varnish does not penetrate fully, easily leaving air bubbles and moisture residue, which not only reduces the insulation performance of the windings, but also accelerates their aging, seriously affecting the operational stability and service life of the repaired equipment. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic paint impregnation device.

[0005] The objective of this utility model can be achieved through the following technical solution: An automatic impregnation device includes a sealed cylinder, a controller, a temperature control component, and a sensor component. The temperature control component is installed inside the sealed cylinder, and the sensor component is used to detect the temperature, liquid level, and air pressure inside the sealed cylinder. The top of the sealed cylinder is provided with a first interface and a second interface. The first interface is provided with a first solenoid valve, which is connected to a vacuum pump through a pipe. The second interface is connected with a three-way connector, and the two ports of the three-way connector are provided with a second solenoid valve and a third solenoid valve, respectively. The second solenoid valve is connected to an air compressor through a pipe, and the third solenoid valve is connected to the outside. The bottom of the sealed cylinder is provided with a third interface, which is provided with a bottom valve. The bottom valve, the temperature control component, the sensor component, the first solenoid valve, the second solenoid valve, the third solenoid valve, the vacuum pump, and the air compressor are all electrically connected to the controller.

[0006] Preferably, the temperature control component includes a heat-conducting cylinder, a cover is provided on the heat-conducting cylinder, a heater is provided on the cover inside the heat-conducting cylinder, and a cooling coil is fixedly provided on the inner wall of the heat-conducting cylinder.

[0007] Preferably, the cover is provided with a first temperature sensor, the detection end of the first temperature sensor passing through the cover and extending into the heat-conducting cylinder.

[0008] Preferably, the heat-conducting cylinder is filled with heat-conducting oil.

[0009] Preferably, the sealing cylinder includes a cylinder body, with an upper sealing plate and a lower sealing plate respectively provided at the upper and lower ends of the cylinder body, and the lower sealing plate is locked to the cylinder body and the upper sealing plate by through bolts.

[0010] Preferably, a sealing gasket is provided between the cylinder and the upper sealing plate and the lower sealing plate.

[0011] Preferably, a bracket is provided at the bottom of the lower sealing plate.

[0012] Preferably, the sensor assembly includes a second temperature sensor, a liquid level sensor, and a vacuum pressure sensor.

[0013] The beneficial effects of this utility model are: This device integrates multiple processes such as pre-drying, vacuum dehumidification, impregnation, and drying into one unit. It is small in size and low in cost, making it suitable for widespread use in small and medium-sized repair shops. By precisely controlling parameters such as temperature and vacuum degree through the controller, the process is automated, which solves the defects of outdated processes and significantly improves the insulation quality and service life of the windings after repair. Attached Figure Description

[0014] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an automatic paint impregnation device according to the present invention.

[0016] Figure 2 This is a cross-sectional view of an automatic paint impregnation device according to the present invention.

[0017] Figure 3 This is a schematic diagram of the temperature control component of an automatic impregnation device according to the present invention.

[0018] Figure 4 This is a schematic diagram of the sealing cylinder structure of an automatic paint impregnation device according to this utility model.

[0019] The labels in the diagram represent: 1. Sealing cylinder; 2. Temperature control assembly; 3. Sensor assembly; 4. First interface; 5. Second interface; 6. First solenoid valve; 7. T-connector; 8. Second solenoid valve; 9. Third solenoid valve; 10. Third interface; 11. Bottom valve; 12. Heat-conducting cylinder; 13. Cover; 14. Heater; 15. Cooling coil; 16. First temperature sensor; 17. Cylinder body; 18. Upper sealing plate; 19. Lower sealing plate; 20. Bolt; 21. Sealing gasket; 22. Bracket; 23. Second temperature sensor; 24. Liquid level sensor; 25. Vacuum pressure sensor. Detailed Implementation

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] See Figures 1 to 4As shown, the structure of this utility model is as follows: an automatic impregnation device, including a sealed cylinder 1, a controller, a temperature control component 2, and a sensor component 3. The temperature control component 2 is disposed inside the sealed cylinder 1, and the sensor component 3 is used to detect the temperature, liquid level, and air pressure inside the sealed cylinder 1. The top of the sealed cylinder 1 is provided with a first interface 4 and a second interface 5. A first solenoid valve 6 is provided on the first interface 4 and is connected to a vacuum pump through a pipe. A three-way connector 7 is connected to the second interface 5, and a second solenoid valve 8 and a third solenoid valve 9 are respectively provided on the two ports of the three-way connector 7. The second solenoid valve 8 is connected to the air compressor via a pipe, and the third solenoid valve 9 is connected to the outside. A third interface 10 is located at the bottom of the sealing cylinder 1, and a bottom valve 11 is installed on the third interface 10. The bottom valve 11, temperature control component 2, sensor component 3, first solenoid valve 6, second solenoid valve 8, third solenoid valve 9, vacuum pump, and air compressor are all electrically connected to the controller. Specifically, the controller, as the control core of the automatic impregnation device, receives the temperature, liquid level, and air pressure signals inside the sealing cylinder 1 detected by the sensor component 3, and regulates each actuator according to a preset program. The temperature control component 2 can adjust the temperature inside the sealing cylinder 1 to meet the temperature requirements of different processes. The sensor component 3 monitors the temperature, liquid level, and air pressure inside the sealing cylinder 1 in real time, providing accurate parameter data for the controller. During vacuum-related processes, the controller opens the first solenoid valve 6, and the vacuum pump evacuates the sealed cylinder 1 through the first interface 4, creating a negative pressure inside the cylinder. During the pressurization process, the controller opens the second solenoid valve 8, and the air compressor injects compressed air into the sealed cylinder 1 through the three-way connector 7, achieving pressurization. When pressure needs to be released or air needs to be vented, the third solenoid valve 9 opens, connecting the sealed cylinder 1 to the outside environment through the three-way connector 7, balancing the internal and external air pressures. The bottom valve 11 opens or closes under the control of the controller, realizing the injection and discharge of insulating varnish. Under the coordination of the controller, all components complete pre-drying, vacuum dehumidification, vacuum impregnation, and pressure impregnation processes according to a preset procedure, achieving a high degree of automation and ensuring precise and controllable impregnation.

[0024] like Figure 2 , Figure 3As shown, the temperature control component 2 includes a heat-conducting cylinder 12, a cover 13 on the heat-conducting cylinder 12, a heater 14 located inside the heat-conducting cylinder 12 on the cover 13, and a cooling coil 15 fixed to the inner wall of the heat-conducting cylinder 12. Specifically, the heat-conducting cylinder 12 provides a carrier for temperature regulation, and the cover 13 serves a sealing function. When the heater 14 is working, it transfers heat to the sealed cylinder 1 through the heat-conducting cylinder 12, raising the temperature inside the sealed cylinder 1. The inlet and outlet of the cooling coil 15 pass through the cover 13 and are connected to external circulating cooling water. The controller can control the cooling water flowing into the cooling coil 15 by controlling the valves on the circulating cooling water pipeline, absorbing the heat inside the heat-conducting cylinder 12 and achieving cooling. Based on the temperature detection signal, the controller controls the start and stop of the heater 14 and the circulation of cooling water in the cooling coil 15, thereby precisely regulating the temperature inside the sealed cylinder 1 to meet the temperature requirements of different processes.

[0025] like Figure 3 As shown, a first temperature sensor 16 is provided on the cover 13. The detection end of the first temperature sensor 16 passes through the cover 13 and extends into the heat-conducting cylinder 12. Specifically, the first temperature sensor 16 is used to detect the temperature inside the heat-conducting cylinder 12. Its detection end extends into the heat-conducting cylinder 12, enabling it to accurately obtain real-time temperature information inside the heat-conducting cylinder 12 and transmit this information to the controller. Based on the detection data of the first temperature sensor 16, the controller compares it with a preset temperature value, and then controls the working state of the heater 14 and the cooling coil 15 to ensure that the temperature inside the heat-conducting cylinder 12 is stable within the required range, thereby indirectly achieving precise control of the temperature inside the sealed cylinder 1.

[0026] Furthermore, the heat-conducting cylinder 12 is filled with heat-conducting oil. Specifically, the heat-conducting oil has good thermal conductivity and thermal stability, which can evenly transfer the heat generated by the heater 14 to the entire heat-conducting cylinder 12, and then transfer the heat to the sealed cylinder 1 through the heat-conducting cylinder 12, so that the temperature inside the sealed cylinder 1 rises evenly. At the same time, when the cooling coil 15 is working, the heat-conducting oil can quickly absorb heat and transfer it to the cooling coil 15 to achieve uniform cooling.

[0027] like Figure 4As shown, the sealing cylinder 1 includes a cylinder body 17. An upper sealing plate 18 and a lower sealing plate 19 are respectively provided at the upper and lower ends of the cylinder body 17. The lower sealing plate 19 is locked to the cylinder body 17 and the upper sealing plate 18 by through bolts 20. Specifically, the cylinder body 17 serves as the main body of the sealing cylinder 1, providing space for accommodating the workpiece and insulating varnish. The upper sealing plate 18 and the lower sealing plate 19 seal the upper and lower ends of the cylinder body 17 respectively. Locking the lower sealing plate 19, the cylinder body 17, and the upper sealing plate 18 by through bolts 20 ensures a tight fit, forming a rigid sealed space. This ensures that the sealing cylinder 1 can withstand the corresponding pressure during vacuuming, pressurization, and other processes, guaranteeing its airtightness and providing a reliable sealed environment for the smooth operation of each process. When impregnating the motor stator with varnish, the motor housing is placed between the lower sealing plate 19 and the upper sealing cover 13, which can serve as the cylinder body 17 of the sealing cylinder 1.

[0028] like Figure 2 , Figure 4 As shown, a sealing gasket 21 is provided between the cylinder 17 and the upper sealing plate 18 and the lower sealing plate 19. Specifically, the sealing gasket 21 deforms under the locking force of the bolt 20, which can fill the tiny gaps between the contact surfaces, effectively block the leakage channels of gas and liquid, enhance the sealing performance of the sealing cylinder 1, ensure that the required vacuum degree can be achieved when vacuuming, maintain a stable pressure when pressurizing, and prevent the leakage of insulating varnish.

[0029] like Figure 1 , Figure 2 , Figure 4 As shown, the bottom of the lower sealing plate 19 is provided with a bracket 22. Specifically, the bracket 22 bears the weight of the sealing cylinder 1 and the internal workpiece, insulating paint, etc., so that the device can be stably placed on the working surface.

[0030] like Figure 1 As shown, sensor assembly 3 includes a second temperature sensor 23, a liquid level sensor 24, and a vacuum pressure sensor 25. Specifically, the second temperature sensor 23 is used to directly detect the temperature inside the sealed cylinder 1, providing a direct basis for the controller to regulate the temperature inside the sealed cylinder 1; the liquid level sensor 24 can monitor the liquid level of the insulating varnish inside the sealed cylinder 1 in real time. When the liquid level reaches the preset value, it transmits a signal to the controller, which then controls the bottom valve 11 to close, preventing excessive or insufficient insulating varnish; the vacuum pressure sensor 25 can detect the air pressure inside the sealed cylinder 1, including vacuum and positive pressure. The controller controls the operation of the vacuum pump, air compressor, and various solenoid valves based on its detection data, so that the air pressure inside the sealed cylinder 1 is stabilized within the range required for each process, ensuring the accuracy of process parameters.

[0031] In practical use, the automatic impregnation device operates automatically under the coordination of the controller according to the preset process of pre-drying, vacuum dehumidification, vacuum impregnation, pressure impregnation, dripping, and drying: During pre-drying, the controller loads the preset drying temperature and time, starts the temperature control component 2 to heat the sealing cylinder 1, and at the same time, the controller dynamically adjusts the temperature control component 2 to maintain the set temperature based on the temperature inside the sealing cylinder 1 fed back by the sensor component 3. At the same time, the third solenoid valve 9 is opened to balance the internal and external air pressure. After reaching the preset time, it enters the vacuum dehumidification stage; during the vacuum dehumidification stage, the controller first closes the third and second solenoid valves 8 and Bottom valve 11 seals the cylinder 1, then the first solenoid valve 6 is opened to start the vacuum pump to create a vacuum. Based on the temperature and pressure data fed back by sensor assembly 3, the sealed cylinder 1 reaches the set dehumidification temperature and vacuum level. After the set time, vacuum impregnation begins. During vacuum impregnation, the temperature control assembly 2 first adjusts the cylinder to the preset impregnation temperature, then the third and second solenoid valves 8 are closed. Bottom valve 11 and the first solenoid valve 6 are opened to draw in insulating varnish using negative pressure. When sensor assembly 3 detects the preset varnish level, bottom valve 11 is closed to stop varnish feeding. Based on the temperature and pressure data fed back by sensor assembly 3... To maintain the temperature and vacuum level inside the sealed cylinder 1, once the vacuum level reaches the target, the first solenoid valve 6 and the vacuum pump are closed. After reaching the preset time, pressure impregnation begins. In the pressure impregnation process, the controller closes the third and first solenoid valves 6 and the bottom valve 11, opens the second solenoid valve 8, and simultaneously starts the air compressor to pressurize the cylinder. The controller uses the pressure feedback from the sensor assembly 3 to control the opening and closing of the air compressor and the second solenoid valve 8 to maintain the preset positive pressure, promoting paint penetration into the workpiece gaps. At the same time, the temperature control assembly 2 maintains the set temperature inside the sealed cylinder 1. After reaching the target time, paint dripping begins. In the paint dripping stage, the controller opens... Bottom valve 11 and third solenoid valve 9 are closed, and first and second solenoid valves 8 are closed, allowing the insulating varnish to flow back and be discharged through bottom valve 11 by gravity. Temperature control component 2 continues to maintain the preset dripping temperature to ensure the varnish's fluidity and facilitate dripping. After the preset time, the process enters drying. In the drying process, bottom valve 11 and third solenoid valve 9 are kept open, and first solenoid valve 6 and second solenoid valve 8 are closed. Temperature control component 2 maintains the set drying temperature based on the data fed back by sensor component 3 to dry the insulating varnish. After the preset time is reached, the process is completed. The entire process is automated with precise and controllable varnish impregnation achieved through the linkage of all components.

[0032] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. An automatic impregnation device, characterized in that: The system includes a sealing cylinder (1), a controller, a temperature control component (2), and a sensor component (3). The temperature control component (2) is located inside the sealing cylinder (1), and the sensor component (3) is used to detect the temperature, liquid level, and air pressure inside the sealing cylinder (1). The top of the sealing cylinder (1) is provided with a first interface (4) and a second interface (5). The first interface (4) is provided with a first solenoid valve (6), which is connected to a vacuum pump through a pipe. The second interface (5) is connected with a three-way connector (7), and the two interfaces of the three-way connector (7) are provided with a second solenoid valve (8) and a third solenoid valve (9). The second solenoid valve (8) is connected to an air compressor through a pipe, and the third solenoid valve (9) is connected to the outside. The bottom of the sealing cylinder (1) is provided with a third interface (10), and the third interface (10) is provided with a bottom valve (11). The bottom valve (11), the temperature control component (2), the sensor component (3), the first solenoid valve (6), the second solenoid valve (8), the third solenoid valve (9), the vacuum pump, and the air compressor are all electrically connected to the controller.

2. The automatic impregnation apparatus according to claim 1, characterized in that: The temperature control component (2) includes a heat-conducting cylinder (12), a cover (13) is provided on the heat-conducting cylinder (12), a heater (14) is provided on the cover (13) inside the heat-conducting cylinder (12), and a cooling coil (15) is fixedly provided on the inner wall of the heat-conducting cylinder (12).

3. The automatic impregnation apparatus according to claim 2, characterized in that: The cover (13) is provided with a first temperature sensor (16), and the detection end of the first temperature sensor (16) passes through the cover (13) and extends into the heat-conducting cylinder (12).

4. The automatic impregnation apparatus according to claim 2, characterized in that: The heat-conducting cylinder (12) is filled with heat-conducting oil.

5. The automatic impregnation apparatus according to claim 1, characterized in that: The sealing cylinder (1) includes a cylinder body (17), and an upper sealing plate (18) and a lower sealing plate (19) are respectively provided at the upper and lower ends of the cylinder body (17). The lower sealing plate (19) is locked to the cylinder body (17) and the upper sealing plate (18) by bolts (20) that pass through it.

6. The automatic impregnation apparatus according to claim 5, characterized in that: A sealing gasket (21) is provided between the cylinder (17) and the upper sealing plate (18) and the lower sealing plate (19).

7. The automatic impregnation apparatus according to claim 5, characterized in that: The bottom of the lower sealing plate (19) is provided with a bracket (22).

8. The automatic impregnation apparatus according to claim 1, characterized in that: The sensor assembly (3) includes a second temperature sensor (23), a liquid level sensor (24), and a vacuum pressure sensor (25).

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