A kind of non-crystalline motor rotor vacuum pressure impregnation insulation treatment device

Abstract

The utility model discloses an amorphous motor rotor vacuum pressure impregnation insulation processing device relates to the device field for coating or similar processing, including the impregnation box, be provided with the goods placing table in the impregnation box, and the fixture of installing is held the rotor on the goods placing table, the below of goods placing table is provided with the receiving station, and the goods placing table rotatory connection is in the receiving station top, and the below of receiving station is provided with the installation box, and the servo motor is installed in the installation box, and the output of servo motor is connected with the pivot through the shaft coupling, and the pivot top passes through the receiving station and is fixed with the middle end of goods placing table bottom, the inside of impregnation box is installed with a plurality of spray heads on the top of goods placing table, and the spray head is connected with the paint delivery pipeline, and the other end of paint delivery pipeline is connected with the paint spraying machine, and the paint spraying machine side is connected with the pressure -resistant paint storage jar, the lateral wall of impregnation box is connected with the negative pressure pipe of intercommunication, and the other end of negative pressure pipe is connected with the vacuum pump, the vacuum environment reduces the bubble content in the paint, and the insulation layer porosity reduces after solidification.

Description

Technical Field

[0001] This utility model relates to the field of apparatus for coating or similar treatments, and more specifically to an apparatus for vacuum pressure impregnation insulation treatment of amorphous motor rotors. Background Technology

[0002] Amorphous motor rotors typically undergo insulation treatment, which involves penetrating insulating varnish into the gaps, slots, and micropores of the rotor core to form a continuous and dense insulating layer, thereby blocking eddy currents and preventing leakage. Currently, the core technology of impregnation equipment lies in how to promote efficient penetration of the insulating varnish, and some equipment in the industry attempts to promote the flow of the varnish by applying pressure.

[0003] However, existing impregnation methods are mostly carried out under normal pressure. When impregnating under normal pressure, air will form air resistance in the gaps, hindering the penetration of the insulating varnish. This results in impregnation gaps in areas such as ventilation holes and lamination gaps, poor wettability between the material and the rotor surface, insufficient adhesion of the varnish layer after curing, and damage to the continuity of the insulation layer, making the motor prone to local breakdown during operation. Furthermore, when the varnish is sprayed or soaked under normal pressure, the tiny air bubbles it contains cannot be expelled, forming pores after curing and reducing the dielectric strength of the insulation layer. Under normal pressure, the fluidity of the varnish is limited. For complex structures of amorphous rotors (such as multi-slots and deep holes), the varnish is difficult to fill naturally and requires high-pressure forced penetration, which can easily cause rotor deformation due to excessive pressure. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a vacuum pressure impregnation insulation treatment device for amorphous motor rotors, comprising an impregnation tank, a platform within the impregnation tank, a rotor placed on the platform, a door for loading and unloading the rotor installed on the front wall of the impregnation tank, and a clamp for holding the rotor installed on the platform; a receiving platform is located below the platform, the platform being rotatably connected to the top of the receiving platform, and an installation box is located below the receiving platform, containing a servo motor, the output end of which is connected to a rotating shaft via a coupling, the top of the rotating shaft passing through the receiving platform and fixed to the middle of the bottom of the platform; multiple spray heads are installed inside the impregnation tank above the platform, each spray head connected to a paint delivery pipe, the other end of which extends outside the impregnation tank and is connected to a paint spraying machine, with a pressure-resistant paint storage tank connected to the side of the paint spraying machine; a negative pressure pipe is connected to the side wall of the impregnation tank, the other end of which is connected to a vacuum pump.

[0005] Furthermore, there are installation cavities between the two sides of the receiving platform and the inner wall of the immersion tank. A reflux seat is fixed in the installation cavity. A reflux trough is opened on the reflux seat and converges towards the middle of the bottom end. The bottom end of the reflux trough is connected to a recovery pipe extending to the outside of the immersion tank.

[0006] Furthermore, an on / off valve is installed on the outer side of the recovery pipe.

[0007] Furthermore, a pressure relief pipe is installed on the side wall of the impregnation tank, and a pressure relief valve is installed on the pressure relief pipe.

[0008] Furthermore, solenoid valves are installed on the paint delivery pipeline.

[0009] Furthermore, the top of the shelf is provided with a positioning slot for placing the rotor.

[0010] The beneficial effects of this utility model are as follows: 1. Vacuum treatment can completely remove air from the inside and surface of the rotor, allowing the insulating varnish to penetrate into all gaps and micropores without obstruction under subsequent pressure. This avoids the blank impregnation problem commonly seen in non-vacuum equipment, and the varnish can adhere more tightly to the rotor surface, resulting in enhanced adhesion of the varnish layer after curing. The vacuum environment reduces the air bubble content in the varnish, and the porosity of the insulation layer is reduced after curing, enhancing the insulation performance and breakdown resistance of the rotor.

[0011] 2. By setting multiple spray heads and rotating the rotor during the painting process, it is possible to ensure that the insulating varnish is evenly covered on all parts of the rotor, including complex shapes and tiny gaps, thereby improving the insulation performance and overall quality of the rotor and reducing the risk of motor failure due to poor local insulation.

[0012] 3. The recycling system, consisting of a return seat, a return tank, and a recycling pipe, can collect and recycle excess insulating varnish that drips or overflows during the impregnation process. After processing, it can be reused. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the internal structure of the immersion tank.

[0014] The reference numerals in the attached drawings are explained as follows: 1. Impregnation tank; 101. Tank door; 2. Storage platform; 3. Rotor; 4. Clamp; 5. Receiving platform; 6. Mounting box; 7. Servo motor; 8. Rotating shaft; 9. Spray head; 10. Paint delivery pipe; 11. Paint sprayer; 12. Pressure-resistant paint storage tank; 13. Negative pressure pipe; 14. Vacuum pump; 15. Return seat; 16. Recovery pipe; 17. On / off valve; 18. Pressure relief pipe; 19. Pressure relief valve; 20. Solenoid valve. Detailed Implementation

[0015] 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., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation 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.

[0016] 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.

[0017] The present invention will be further described below with reference to the accompanying drawings: A vacuum pressure impregnation insulation treatment device for an amorphous motor rotor, such as Figure 1 and Figure 2 As shown, the device includes an impregnation tank 1, a platform 2 inside the impregnation tank 1, a rotor 3 placed on the platform 2, a positioning groove for placing the rotor 3 on the top of the platform 2, a door 101 for taking out and placing the rotor 3 installed on the front wall of the impregnation tank 1, a sealing rubber is provided at the contact point between the door 101 and the impregnation tank 1, and a clamp 4 for holding the rotor 3 is installed on the platform 2; a receiving platform 5 is provided below the platform 2, and the platform 2 is rotatably connected to the top of the receiving platform 5; a mounting box 6 is provided below the receiving platform 5, and a servo motor 7 is installed in the mounting box 6. The output end of the servo motor 7 is connected to a rotating... Shaft 8, the top of shaft 8 passes through the receiving platform 5 and is fixed to the bottom middle of the platform 2; inside the impregnation tank 1, above the platform 2, multiple spray heads 9 are installed, the spray heads 9 are connected to paint supply pipes 10, the paint supply pipes 10 are equipped with solenoid valves 20, the other end of the paint supply pipes 10 extends to the outside of the impregnation tank 1 and is connected to a paint sprayer 11, the side of the paint sprayer 11 is connected to a pressure-resistant paint storage tank 12; the side wall of the impregnation tank 1 is connected to a communicating negative pressure pipe 13, the other end of the negative pressure pipe 13 is connected to a vacuum pump 14, the side wall of the impregnation tank 1 is equipped with a pressure relief pipe 18, and a pressure relief valve 19 is installed on the pressure relief pipe 18.

[0018] The positioning groove cooperates with the clamp 4 to position the rotor 3 through clamping force; the servo motor 7 transmits power to the platform 2 through the coupling and the rotating shaft 8, so that it rotates around the receiving platform 5; the spray head 9, under the control of the paint sprayer 11 and the solenoid valve 20, atomizes and sprays the insulating paint in the pressure-resistant paint storage tank 12 at a set frequency; the vacuum pump 14 draws air from the impregnation tank 1 through the negative pressure pipe 13 to form a vacuum, and the pressure relief valve 19 controls the pressure in the tank to be within a safe range through the pressure relief pipe 18.

[0019] like Figure 2 As shown, in this embodiment, mounting cavities are provided between the receiving platform 5 and the mounting box 6 on both sides and the inner wall of the impregnation tank 1. A return seat 15 is fixed in the mounting cavity. A return groove is formed on the return seat 15, which converges towards the center of the bottom end. The bottom end of the return groove is connected to a recovery pipe 16 extending to the outside of the impregnation tank 1. An on / off valve 17 is installed on the outer side of the recovery pipe 16. The mounting cavity provides installation space for the return assembly. The return groove of the return seat 15 uses gravity and slope to make excess paint converge towards the bottom end. The recovery pipe 16 discharges the converged paint out of the impregnation tank 1. The on / off valve 17 controls the start and stop of the recovery process through a mechanical switch.

[0020] The working principle of this utility model is as follows: First, the operator opens the cabinet door 101, places the amorphous motor rotor 3 in the positioning slot of the platform 2, and secures it with clamps 4. After closing the cabinet door 101, the vacuum pump 14 is started, and the air inside the impregnation chamber 1 is extracted through the negative pressure pipe 13, gradually creating a vacuum environment inside the impregnation chamber 1. During this process, the vacuum level can be monitored by a corresponding pressure sensor. When the predetermined vacuum level is reached inside the impregnation chamber 1, the paint sprayer 11 is started, and the insulating varnish is extracted from the pressure-resistant varnish tank 12 and transported to each spray head 9 through the varnish delivery pipe 10. At the same time, the solenoid valve 20 is opened, and the insulating varnish is evenly sprayed onto the surface of the rotor 3 through the spray heads 9. The servo motor 7 drives the rotating shaft 8 to rotate through the coupling, thereby causing the platform 2 and the rotor 3 fixed on it to rotate. The rotation of rotor 3 allows the insulating varnish to be more evenly covered on its surface and in various gaps. At the same time, in a vacuum environment, the air inside rotor 3 has been extracted in advance. During the spraying of the insulating varnish, the varnish can more easily penetrate into the tiny pores and complex structure of rotor 3, achieving deep insulation treatment.

[0021] During the spraying of insulating varnish, excess varnish may drip or overflow. This excess varnish flows down the inner wall of the impregnation tank 1 into the return tank in the mounting cavity, and is then collected through the recovery pipe 16. When the spraying time reaches the predetermined limit, the solenoid valve 20 closes, the spraying machine 11 stops working, and the spraying process ends. The vacuum pump 14 is turned off, and the pressure relief valve 19 on the pressure relief pipe 18 is opened. The pressure inside the impregnation tank 1 gradually returns to normal atmospheric pressure, facilitating the subsequent removal of the rotor 3. During the pressure release process, the pressure sensor also monitors the pressure changes to ensure a smooth pressure release inside the impregnation tank 1, avoiding adverse effects on the rotor 3 or the equipment due to sudden pressure changes.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A vacuum pressure impregnation insulation treatment device for an amorphous motor rotor (3), comprising an impregnation tank (1), characterized in that: The impregnation tank (1) is provided with a platform (2), on which the rotor (3) is placed. The front wall of the impregnation tank (1) is provided with a door (101) for taking out and placing the rotor (3). The platform (2) is provided with a clamp (4) for holding the rotor (3). A receiving platform (5) is provided below the platform (2). The platform (2) is rotatably connected to the top of the receiving platform (5). A mounting box (6) is provided below the receiving platform (5). A servo motor (7) is installed in the mounting box (6). The output end of the servo motor (7) is connected to a rotating shaft via a coupling. Shaft (8), the top of the shaft (8) passes through the receiving platform (5) and is fixed to the bottom middle of the platform (2); inside the impregnation tank (1) above the platform (2) are multiple spray heads (9), the spray heads (9) are connected to paint supply pipes (10), the other end of the paint supply pipes (10) extends to the outside of the impregnation tank (1) and is connected to a paint sprayer (11), and a pressure-resistant paint storage tank (12) is connected to the side of the paint sprayer (11); the side wall of the impregnation tank (1) is connected to a communicating negative pressure pipe (13), and the other end of the negative pressure pipe (13) is connected to a vacuum pump (14).

2. The vacuum pressure impregnation insulation treatment device for an amorphous motor rotor (3) according to claim 1, characterized in that: The receiving platform (5) and the mounting box (6) have mounting cavities between their sides and the inner wall of the immersion tank (1). A reflux seat (15) is fixed in the mounting cavity. A reflux groove is opened on the reflux seat (15) and converges towards the middle of the bottom end. The bottom end of the reflux groove is connected to a recovery pipe (16) extending to the outside of the immersion tank (1).

3. The vacuum pressure impregnation insulation treatment device for an amorphous motor rotor (3) according to claim 2, characterized in that: An on / off valve (17) is installed on the outer side of the recovery pipe (16).

4. The vacuum pressure impregnation insulation treatment device for an amorphous motor rotor (3) according to claim 1, characterized in that: The side wall of the impregnation tank (1) is equipped with a pressure relief pipe (18), and a pressure relief valve (19) is installed on the pressure relief pipe (18).

5. The vacuum pressure impregnation insulation treatment device for an amorphous motor rotor (3) according to claim 1, characterized in that: A solenoid valve (20) is installed on the paint delivery pipe (10).

6. The vacuum pressure impregnation insulation treatment device for an amorphous motor rotor (3) according to claim 1, characterized in that: The top of the platform (2) is provided with a positioning groove for placing the rotor (3).

Images