A vacuum pressure impregnation device

Abstract

The utility model discloses a vacuum pressure paint dipping device, it includes: paint dipping bucket and lid, paint dipping bucket inner wall fixedly connected with the transverse board, the upper surface rotationally connected with the baffle of transverse board, the upper surface fixedly connected with the fixed base of baffle, the fixed base is the openwork structure, the top intercommunication of lid has the gas pipe, one end intercommunication of gas pipe has the nitrogen jar body. Through the paint liquid of above -mentioned structure can cover even the maximum degree lid and dip the paint article, prevent the emergence dipping dead angle.

Description

Technical Field

[0001] This utility model relates to the field of impregnation technology, and in particular to a vacuum pressure impregnation device. Background Technology

[0002] Vacuum impregnation involves placing the workpiece in a vacuum environment to remove air and volatiles from the windings, then injecting insulating varnish. The pressure difference allows the varnish to fully penetrate the winding gaps and wires, significantly improving the density and adhesion of the insulation layer and meeting the requirements of harsh working conditions such as high temperature and high humidity.

[0003] When applying for this utility model, a search revealed a Chinese patent that discloses a "vacuum pressure impregnation product design device" with application number "201711170307.6". This patent improves the impregnation effect of the workpiece by using an ultrasonic vibrating rod. It uses a temperature sensor and an electric heating element to keep the temperature of the paint liquid in the tank constant. The stirring device drives the paint liquid in the tank to rotate, so that the temperature of the paint liquid in the tank is the same everywhere. However, in a vacuum environment, the stirring paddle can easily entangle air when it agitates the paint liquid. Even in a vacuum environment, the eddies generated by stirring may cause the paint liquid to mix with the residual gas in the tank, forming bubbles. These bubbles can adhere to the surface of the item or block the gaps, thus hindering the penetration of the paint liquid. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum pressure impregnation device, which has the characteristic that the paint liquid can cover the items to be impregnated evenly to the greatest extent and prevent the occurrence of impregnation dead corners.

[0005] To achieve the above objectives, a vacuum pressure impregnation device is provided, comprising: an impregnation tank and a lid, wherein a horizontal plate is fixedly connected to the inner wall of the impregnation tank, a partition is rotatably connected to the upper surface of the horizontal plate, a fixed seat is fixedly connected to the upper surface of the partition, the fixed seat is a hollow structure, a gas supply pipe is connected to the top of the lid, and one end of the gas supply pipe is connected to a nitrogen tank body.

[0006] According to the vacuum pressure impregnation device, the middle part of the cover is fitted and connected to the inner wall of the impregnation tank, and both the outer wall of the middle part of the cover and the inner wall of the cover are fixedly connected with sealing gaskets.

[0007] According to the vacuum pressure impregnation device, one end of the air supply pipe extends from the top of the cover into the interior of the impregnation tank, and the top of the cover is connected to a vacuum extraction pipe that extends into the interior of the impregnation tank.

[0008] According to the vacuum pressure impregnation device, the impregnation tank is connected to a paint discharge pipe in the middle, one end of the paint discharge pipe is threaded with a sealing cap, the top of the cap is connected to a paint inlet pipe, and extends into the interior of the impregnation tank.

[0009] According to the vacuum pressure impregnation device, a motor is provided on the lower surface of the horizontal plate, and the output end of the motor is fixedly connected to the bottom of the partition.

[0010] According to the aforementioned vacuum pressure impregnation device, a pressure sensor is provided on the inner wall of the impregnation tank, and a PLC controller is provided on the outer wall of the impregnation tank. The pressure sensor and the motor are both electrically connected to the PLC controller.

[0011] According to the vacuum pressure impregnation device, sealing rings are provided at the connection points of the air supply pipe, vacuum extraction pipe, and paint inlet pipe with the cover.

[0012] The above-mentioned solution has the following beneficial effects: This invention utilizes a hollowed-out fixing base to minimize obstruction of the surface of the object, avoiding dead zones in the paint immersion process caused by solid fixing structures. The slow rotation of the fixing base can meet the paint immersion requirements of structures with grooves or gaps. Combined with the unobstructed nature of the hollowed-out structure, the paint can evenly cover every surface as it rotates. Nitrogen, as an inert gas, is introduced into the tank to create uniform positive pressure, pushing the paint deep into the internal gaps of the object. The rotating hollowed-out structure also makes it easier for the paint to flow on the surface of the object under pressure, filling tiny gaps. At the same time, nitrogen can dilute residual air in the tank, preventing air bubbles from hindering the contact between the paint and the object to be immersed.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a perspective view of a vacuum pressure impregnation device according to the present invention; Figure 2 This is a cross-sectional view of a vacuum pressure impregnation device according to the present invention; Figure 3 This is a perspective view of the fixing base of a vacuum pressure impregnation device according to the present invention; Figure 4 This is a perspective view of the lid of a vacuum pressure impregnation device according to the present invention.

[0015] Legend: 1. Dipping tank; 2. Paint drain pipe; 3. Sealing cover; 4. Fixing base; 5. Partition; 6. Motor; 7. Horizontal plate; 8. Nitrogen tank body; 9. Sealing gasket; 10. PLC controller; 11. Sealing ring; 12. Gas supply pipe; 13. Vacuum extraction pipe; 14. Paint inlet pipe; 15. Cover; 16. Pressure sensor. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-4 This utility model provides a vacuum pressure impregnation device, which includes an impregnation tank 1 and a lid 15. A horizontal plate 7 is fixedly connected to the inner wall of the impregnation tank 1 for mounting a motor 6. A partition 5 is rotatably connected to the upper surface of the horizontal plate 7, isolating it from the output end of the motor 6, and is used to mount a fixing seat 4. A fixing seat 4 is fixedly connected to the upper surface of the partition 5 for supporting the item to be impregnated. The fixing seat 4 has a hollow structure to facilitate impregnation from multiple angles. A gas supply pipe 12 is connected to the top of the lid 15 for supplying nitrogen gas. One end of the gas supply pipe 12 is connected to a nitrogen tank body 8 for supplying nitrogen gas. Nitrogen gas, as an inert gas, forms a uniform positive pressure when it is introduced into the tank, pushing the paint liquid into the internal gaps of the item. At the same time, the nitrogen gas can expel residual air in the tank, reduce air bubbles, and prevent air bubbles from hindering the contact between the item to be impregnated and the paint liquid.

[0018] The middle part of the lid 15 is fitted and connected to the inner wall of the paint dipping tank 1. Both the outer wall of the middle part of the lid 15 and the inner wall of the lid 15 are fixedly connected with sealing gaskets 9. The sealing gaskets 9 are set at the connection with the inner wall of the paint dipping tank 1 to improve the sealing performance and prevent air from seeping in from the gaps.

[0019] One end of the gas supply pipe 12 extends from the top of the cover 15 into the interior of the paint dipping tank 1. The gas supply pipe 12 and the top of the cover 15 are connected to a vacuum extraction pipe 13, which also extends into the interior of the paint dipping tank 1. The vacuum extraction pipe 13 is connected to an external vacuum pump, which is electrically connected to the PLC controller 10.

[0020] The middle of the paint dipping tank 1 is connected to a paint drain pipe 2. After the paint drain pipe 2 is opened with the sealing cover 3, it can be connected to an external pipe to transport the paint liquid to the collection device. One end of the paint drain pipe 2 is threaded with a sealing cover 3. When there is no paint liquid to drain, the sealing cover 3 is used to cover the tank to prevent air from entering and to prevent the paint liquid inside the paint dipping tank 1 from flowing out. The top of the cover 15 is connected to a paint inlet pipe 14, which extends into the paint dipping tank 1. The paint inlet pipe 14 is connected to an external liquid storage tank, and the liquid storage tank supplies paint liquid into the paint dipping tank 1 through the paint inlet pipe 14.

[0021] A motor 6 is installed on the lower surface of the horizontal plate 7, which drives the partition 5 to rotate slowly, thereby causing the fixed base 4 to rotate. Even if the item has a complex structure such as grooves and gaps, the rotation will allow each surface to face the direction of the paint pressure in turn. Combined with the hollow structure of the fixed base 4, the paint can evenly cover every detail as the fixed base 4 rotates, avoiding the phenomenon of local paint not being able to penetrate due to static placement. The output end of the motor 6 is fixedly connected to the bottom of the partition 5.

[0022] A pressure sensor 16 is installed on the inner wall of the paint dipping tank 1 to detect the pressure value inside the paint dipping tank 1. A PLC controller 10 is installed on the outer wall of the paint dipping tank 1 for easy electrical control. The pressure sensor 16 and the motor 6 are electrically connected to the PLC controller 10. The external vacuum pump and liquid storage tank are also electrically connected to the PLC controller 10.

[0023] A sealing ring 11 is provided at the connection between the gas supply pipe 12, the vacuum extraction pipe 13, and the paint inlet pipe 14 and the cover 15 to prevent air from entering through the gaps at the connection and to prevent the loss of nitrogen.

[0024] Working principle: When in use, open the lid 15, place the item to be dipped in paint on the fixed base 4, close the lid 15, and the external vacuum pump will draw away the gas inside the paint dipping tank 1 through the vacuum extraction pipe 13 to make the interior reach the preset negative pressure value. The pressure sensor 16 feeds back to the PLC controller 10, thereby stopping the vacuum pump's vacuuming operation. The paint liquid enters the paint dipping tank 1 from the external liquid storage tank through the paint inlet pipe 14. After the paint liquid completely submerges the item to be dipped in paint, the PLC controller 10 starts the motor 6 to drive the fixed base 4 to rotate slowly. The nitrogen tank body 8 is opened to deliver nitrogen gas into the paint dipping tank 1 through the gas delivery pipe 12 to pressurize the paint liquid inside. When the paint dipping work is completed and it is necessary to drain the paint, open the sealing lid 3 to allow the external pipeline to drain the paint.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A vacuum pressure impregnation apparatus, comprising: The paint dipping bucket (1) and the lid (15) are characterized in that a horizontal plate (7) is fixedly connected to the inner wall of the paint dipping bucket (1), a partition (5) is rotatably connected to the upper surface of the horizontal plate (7), a fixed seat (4) is fixedly connected to the upper surface of the partition (5), the fixed seat (4) is a hollow structure, a gas supply pipe (12) is connected to the top of the lid (15), and a nitrogen tank body (8) is connected to one end of the gas supply pipe (12).

2. The vacuum pressure impregnation apparatus according to claim 1, characterized in that, The middle part of the lid (15) is fitted and connected to the inner wall of the paint dipping bucket (1), and the outer wall of the middle part of the lid (15) and the inner wall of the lid (15) are both fixedly connected with sealing gaskets (9).

3. The vacuum pressure impregnation apparatus according to claim 1, characterized in that, One end of the gas supply pipe (12) extends from the top of the cover (15) into the interior of the paint dipping tank (1). The top of the cover (15) is connected to a vacuum extraction pipe (13) that extends into the interior of the paint dipping tank (1).

4. The vacuum pressure impregnation apparatus according to claim 1, characterized in that, The paint dipping tank (1) is connected to a paint drain pipe (2) in the middle. One end of the paint drain pipe (2) is threaded with a sealing cap (3). The top of the cap (15) is connected to a paint inlet pipe (14) and extends into the interior of the paint dipping tank (1).

5. The vacuum pressure impregnation apparatus according to claim 1, characterized in that, A motor (6) is provided on the lower surface of the horizontal plate (7), and the output end of the motor (6) is fixedly connected to the bottom of the partition (5).

6. The vacuum pressure impregnation apparatus according to claim 1, characterized in that, The inner wall of the paint dipping tank (1) is equipped with a pressure sensor (16), and the outer wall of the paint dipping tank (1) is equipped with a PLC controller (10). The pressure sensor (16) and the motor (6) are electrically connected to the PLC controller (10).

7. The vacuum pressure impregnation apparatus according to claim 1, characterized in that, A sealing ring (11) is provided at the connection between the gas supply pipe (12), the vacuum extraction pipe (13), and the paint inlet pipe (14) and the cover (15).

Images