A self-heating continuous vacuum stator insulation curing system

Abstract

This invention discloses a self-heating continuous vacuum stator insulation curing system, relating to the field of stator production technology, including a continuous vacuum production device and a waste gas catalytic combustion device. The continuous vacuum production device is equipped with a front door, a middle door, and a rear door. An automatic lifting platform is installed in front of the front door. A pre-drying chamber is located between the front door and the middle door. A cooling chamber, an impregnation chamber, and a dripping chamber are sequentially located between the middle door and the rear door. The impregnation chamber contains a vacuum device and a vacuum impregnation box. A dripping chamber is located on one side of the vacuum impregnation box and the rear door. Under the action of a catalyst, the organic waste gas undergoes flameless combustion at a relatively low ignition temperature, preventing the generation of large amounts of flammable and explosive waste gas. At the same time, a large amount of heat energy is released and recycled for the energy required for stator insulation curing, achieving the purpose of energy saving and emission reduction.

Description

Technical Field

[0001] This invention relates to the field of stator manufacturing technology, specifically to a self-heating continuous vacuum stator insulation curing system. Background Technology

[0002] Currently, domestically produced automated equipment for insulating and painting various electrical windings, motor stator coils, transformers, and their casings achieves fully automated production, except for loading and unloading of workpieces. Under normal pressure, the workpieces automatically and continuously complete preheating (dehumidification), cooling, vacuum impregnation, drip drying, and gel curing according to set process parameters. It is widely applicable to vacuum continuous impregnation insulation treatment of motors in automobiles, motorcycles, power tools, micro-motors, small and medium-sized motors, electrical coils, as well as coils in household appliances, electronic transformers, and small transformers.

[0003] This technology complements the VPI process for impregnating windings of small, high-volume, and high-requirement workpieces. It expands the application scope of the VPI process, represents an advancement over conventional continuous immersion processes, and is an energy-saving and environmentally friendly insulation impregnation process. It further improves the quality and output of my country's motor and electrical products, enabling enterprises to increase production, save energy, generate profits, reduce impregnation costs, and achieve environmentally friendly production.

[0004] Defects and shortcomings of existing technology:

[0005] The main problems with continuous vacuum production lines are: They involve gel curing, typically with a heating temperature of 150±5℃, and generate a large amount of flammable and explosive waste gas instantaneously. If a malfunction occurs or the emissions are not properly controlled, an explosion could easily occur, posing a safety hazard; the production lines generally lack waste gas treatment facilities, requiring external treatment equipment, which could potentially generate wastewater and hazardous waste again; due to stator preheating and gel curing, existing equipment uses electric heating, with a single production line having an installed capacity of 215kW-435kW. A manufacturer producing H63-355 motors would need to configure 6 production lines, resulting in high energy consumption. If production is intermittent, energy consumption would be even higher, which is detrimental to energy conservation and emission reduction. Summary of the Invention

[0006] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a self-heating continuous vacuum stator insulation curing system to solve the problem that existing continuous vacuum production lines generate a large amount of flammable and explosive waste gas, which is prone to explosion in the event of a malfunction or poor discharge, posing a safety hazard. In addition, the production line generally does not have waste gas treatment facilities and requires external treatment devices, which may generate wastewater and hazardous waste again.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A self-heating continuous vacuum stator insulation curing system includes an automatic lifting platform on the continuous vacuum production device. The system comprises a pre-drying chamber, a cooling chamber, an impregnation chamber, a dripping chamber, a gelation chamber, a curing chamber, and a cooling cavity, all of which are independent spaces. Workpieces pass through a line equipped with a front door, a middle door, and a rear door. The line contains a double roller conveyor with a suspended hoist for cyclical movement. The pre-drying chamber is located between the front and middle doors; the cooling chamber is located between the middle door and the impregnation chamber; and the dripping chamber is located between the rear door and the cooling and dripping chambers. The rear door is located away from the impregnation chamber. A gel chamber is provided on one side, and a curing chamber is connected to the other end of the gel chamber. A circulating double roller conveyor is provided on the side of the front door away from the middle door, with a special hanging device below it. The top of the continuous vacuum production device is provided with an air duct, which is connected to a catalytic combustion device to form a circulating air duct. The air duct is used to recover the waste gas in the curing chamber. The waste gas catalytic combustion device generates heat, which is circulated through the air duct to provide the heat energy required for the pre-baking and curing of the workpieces in the continuous vacuum production device. The interior of the continuous vacuum production device is provided with an annular roller conveyor, and several special hanging devices are provided on the roller conveyor for suspending the workpieces.

[0009] The waste gas catalytic combustion device is connected to the air duct and is used for waste gas catalytic combustion;

[0010] One side of the duct is connected to an air curtain machine, the outlet of the duct is connected to an exhaust duct, an exhaust fan is installed in the middle of the exhaust duct, and the other end of the exhaust duct is connected to the curing chamber. The exhaust gas can be treated and heat can be recovered through the duct, reducing energy consumption.

[0011] As a further aspect of the present invention: the impregnation tank includes a vacuum impregnation tank, an impregnation tank cover, and a drip tray. Waste outlets are provided on both sides of the impregnation tank and connected to air ducts. An automatic paint-receiving protection plate and sealing rubber strip are installed above the sealing surface of the vacuum impregnation tank. The vacuum impregnation tank is used to insulate and cure the stator in a vacuum environment, specifically including the following steps:

[0012] First, the stator is transported to the vacuum impregnation tank station;

[0013] The vacuum impregnation tank rises under the action of a mechanical structure, specifically through an electric push rod or a hydraulic push rod.

[0014] After the vacuum impregnation tank rises, it will cooperate with the impregnation tank cover. Because the sealing surface of the vacuum impregnation tank is equipped with an automatic paint receiving protection plate and sealing rubber strip, the vacuum impregnation tank can be sealed after it is cooperated with the impregnation tank cover.

[0015] Vacuuming and exhausting are performed through a vacuum system connected to a vacuum impregnation tank;

[0016] The paint is conveyed into the vacuum impregnation tank for vacuum impregnation of the stator;

[0017] After vacuum impregnation is completed, the pressure is released and the paint is returned. After the paint drips dry on the stator, the vacuum impregnation tank is lowered to ensure that the vacuum impregnation tank is separated from the impregnation chamber cover. Finally, the stator is transported to the gelation chamber for gel treatment.

[0018] As a further aspect of the present invention: the vacuum impregnation tank is connected to a vacuum system, the vacuum system including a vacuum pump, a paint storage tank, a buffer tank, a cleaning tank, an electric ball valve, and a refrigeration unit. The vacuum pump, the paint storage tank, the buffer tank, the cleaning tank, the electric ball valve, and the refrigeration unit are connected by a vacuum pipe. The paint storage tank is equipped with a level gauge and a drain valve, and a paint filter is installed on the conveying pipeline of the paint storage tank.

[0019] As a further aspect of the present invention: the outer wall of the paint storage tank is provided with a jacket, and circulating cooling water is provided inside the jacket.

[0020] As a further aspect of the present invention: the waste gas catalytic combustion device includes a heat exchanger and a catalytic bed, a flame arrester is provided between the duct and the heat exchanger, the output end of the heat exchanger is connected to the input end of the catalytic bed through a pipe, and the output end of the catalytic bed is connected to the input end of the fan through a pipe passing through the heat exchanger.

[0021] As a further aspect of the present invention: the catalyst in the catalytic bed is a metal catalyst, which has a low ignition temperature, high removal efficiency, high catalytic activity, and is also resistant to high temperature, oxidation, and corrosion. The catalyst changes the chemical reaction rate without participating in the reaction itself, and there is basically no consumption before and after the reaction, resulting in a long service life.

[0022] As a further aspect of the present invention: the metal catalyst is platinum, palladium, rhodium, silver or ruthenium or a mixture thereof in any proportion.

[0023] As a further aspect of the present invention: a regenerative catalytic combustion device is connected between the output end of the heat exchanger and the input end of the catalytic bed. The regenerative catalytic combustion device is divided into five chambers, which are three sets of heat exchange chambers, one set of heating chambers and one set of combustion chambers. The output end of the combustion chamber is connected to the input end of the fan through the three sets of heat exchange chambers.

[0024] For the purification of medium-to-high concentration (500mg / m3-5000 mg / m3) organic waste gas and the purification of low-concentration, high-volume waste gas, under the action of a catalyst, the organic waste gas undergoes flameless combustion at a relatively low ignition temperature (250-400℃), and carbon oxides are oxidized and decomposed into CO2 and H2O, while releasing a large amount of heat energy, thereby achieving the purpose of removing organic matter from the waste gas;

[0025] VOC-containing waste gas is drawn into a heat exchanger by a fan. After being heated by the heat exchanger, it passes through a catalytic burner. At this point, the waste gas has been heated to the catalytic decomposition temperature. Passing through the catalyst bed, catalytic decomposition releases heat energy, while VOCs are decomposed into carbon dioxide and water. After purification, the gas temperature rises and it re-enters the heat exchanger to exchange heat with untreated VOC waste gas, thereby reducing energy consumption.

[0026] Meanwhile, after the exhaust gas is oxidized and combusted and releases heat, it is transferred and exchanged through a 3-stage heat exchanger. The hot air is then sent into the drying tunnel of the continuous vacuum production line by an induced draft fan for stator pre-drying and drying. Excess purified gas is introduced into the chimney by a fan and discharged into the atmosphere in compliance with standards.

[0027] As a further aspect of the present invention: the regenerative catalytic combustion device is divided into five chambers, which are three sets of heat exchange chambers, one set of heating chambers and one set of combustion chambers. The output end of the combustion chamber is connected to the input end of the blower through the three sets of heat exchange chambers.

[0028] The beneficial effects of this invention are:

[0029] 1. This invention utilizes a continuous vacuum production device and a waste gas catalytic combustion device. The waste gas catalytic combustion device purifies medium-to-high concentration organic waste gas and low-concentration, high-volume waste gas. Under the action of a catalyst, the organic waste gas undergoes flameless combustion at a relatively low ignition temperature. Carbon oxides are oxidized and decomposed into CO2 and H2O, while releasing a large amount of heat energy, thereby achieving the purpose of removing organic matter from the waste gas and preventing the generation of large amounts of flammable and explosive waste gas.

[0030] 2. The present invention uses a continuous vacuum production device. After the stator passes through the gel chamber, it will directly enter the curing chamber for curing. Since the sling is circular, the lifting device on the sling can continuously vacuum impregnate the stator and then cure it with insulation, thus ensuring the production efficiency of the stator.

[0031] 3. This invention can be divided into six heating zones according to the number of workstations by setting up a gelation chamber and a curing chamber. The temperature of each heating zone is independently controlled and displayed, and an over-temperature alarm device is provided. The drying tunnel is insulated with aluminum silicate fiber, and the machine adopts a hot air circulation method to make the temperature in each zone uniform. The drying tunnel opening is equipped with an insulated door that opens and closes automatically to reduce heat loss. Attached Figure Description

[0032] The invention will now be further described with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the continuous vacuum production device in this invention;

[0034] Figure 2 This is a flowchart of the waste gas catalytic combustion device in this invention;

[0035] Figure 3 This is the overall flowchart of the present invention.

[0036] In the diagram: 1. Continuous vacuum production unit; 11. Front door; 12. Middle door; 13. Rear door; 2. Circulating double roller conveyor; 4. Air duct; 41. Air curtain machine; 42. Waste exhaust duct; 43. Waste exhaust fan; 5. Hot air circulation fan; 51. Automatic lifting platform; 52. Pre-drying chamber; 53. Cooling chamber; 54. Impregnation chamber; 55. Spraying chamber; 56. Gel chamber; 57. Curing chamber; 58. Cooling cavity; 6. Lifting device. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1:

[0039] like Figures 1-3As shown, a self-heating continuous vacuum stator insulation curing system includes a continuous vacuum production device 1 and a waste gas catalytic combustion device. The continuous vacuum production device 1 is equipped with an automatic lifting platform 51, which contains a pre-drying chamber 52, a cooling chamber 53, an impregnation chamber 54, a dripping chamber 55, a gelling chamber 56, a curing chamber 57, and a cooling cavity 58, all of which are independent spaces. The workpiece passes through a front door 11, a middle door 12, and a rear door 13. The line is equipped with a double roller conveyor and a special hanging device 6 is suspended below, allowing for cyclical movement. The pre-drying chamber 52 is located between the front door 11 and the middle door 12. The cooling chamber 53 is located between the middle door 12 and the impregnation chamber 54. The dripping chamber 55 is located between the rear door 13 and the middle door 12. The impregnation chamber 54 is located between the cooling chamber 53 and the dripping chamber 55. The gelling chamber 56 is located on the side of the rear door 13 away from the impregnation chamber 54. The other end of the gelling chamber 56 is connected to the curing chamber 57. The front door 11 is located away from the middle door 12. One side is equipped with a circulating double roller conveyor 2, and a special hanging device 6 is installed below it; the top of the continuous vacuum production device 1 is equipped with an air duct 4, which is connected to the catalytic combustion device to form a circulating air duct. The air duct 4 is used to recover the waste gas in the curing chamber 57. The waste gas catalytic combustion device generates heat, which is circulated through the air duct to provide the heat energy required for the pre-baking and curing of the workpieces in the vacuum continuous device. The inside of the continuous vacuum production device 1 is equipped with an annular roller conveyor, and several special hanging devices 6 are installed on the roller conveyor. The special hanging devices 6 are used to suspend the workpieces. The sling is fixed inside the continuous vacuum production device 1 by pulleys. The sling is driven by a motor to drive the sling, so that the hanging device 6 can pass through the front door 11, the middle door 12 and the rear door 13 in sequence, as well as the pre-baking chamber 52, the paint dipping box 3, the gel chamber 56 and the curing chamber 57. The waste gas catalytic combustion device is connected to the air duct 4 for waste gas catalytic combustion. Several hot circulation fans 5 are evenly installed on the side of the curing chamber 57.

[0040] One side of the duct 4 is connected to an air curtain machine 41, and the outlet of the duct 4 is connected to an exhaust duct 42. An exhaust fan 43 is installed in the middle of the exhaust duct 42, and the other end of the exhaust duct 42 is connected to the curing chamber 57. The exhaust gas can be treated and heat can be recovered through the duct 4, reducing energy consumption.

[0041] The impregnation tank 3 includes a vacuum impregnation tank, an impregnation tank cover, and a drip tray. Waste outlets are located on both sides of the impregnation tank 3 and are connected to air ducts. The vacuum impregnation tank is used to insulate and cure the stator in a vacuum environment, specifically including the following steps:

[0042] First, the stator is transported to the vacuum impregnation tank station;

[0043] The vacuum impregnation tank rises under the action of a mechanical structure, specifically through an electric push rod or a hydraulic push rod.

[0044] After the vacuum impregnation tank rises, it will cooperate with the impregnation tank cover. Because the sealing surface of the vacuum impregnation tank is equipped with an automatic paint receiving protection plate and sealing rubber strip, the vacuum impregnation tank can be sealed after it is cooperated with the impregnation tank cover.

[0045] Vacuuming and exhausting are performed through a vacuum system connected to a vacuum impregnation tank;

[0046] The paint is conveyed into the vacuum impregnation tank for vacuum impregnation of the stator;

[0047] After vacuum impregnation is completed, the pressure is released and the paint is returned. After the paint drips dry on the stator, the vacuum impregnation tank is lowered to ensure that the vacuum impregnation tank is separated from the impregnation box cover. Finally, the stator is transported to gelation chamber 56 for gel treatment.

[0048] The vacuum impregnation tank is connected to a vacuum system, which includes a vacuum pump, a paint storage tank, a buffer tank, a cleaning tank, an electric ball valve, and a refrigeration unit. The vacuum pump, paint storage tank, buffer tank, cleaning tank, electric ball valve, and refrigeration unit are connected by a vacuum tube. The paint storage tank is equipped with a level gauge and a drain valve. A paint filter is installed on the conveying pipeline of the paint storage tank.

[0049] The outer wall of the paint storage tank is equipped with a jacket, and circulating cooling water is installed inside the jacket.

[0050] The stator is loaded into the lifting device 6 through the roller 2, and then sent into the pre-drying chamber 52. It is placed in an environment with a certain temperature and maintained for a certain time to allow the moisture, solvent and other volatile substances inside the stator to fully dissipate and to allow the workpiece to obtain residual heat. Then the stator is transported to the top of the vacuum impregnation tank for the vacuum impregnation process.

[0051] After the stator passes through the gel chamber 56, it will directly enter the curing chamber 57 for curing. Since the sling is circular, the lifting device 6 on the sling can continuously vacuum impregnate the stator and then cure it to ensure the production efficiency of the stator.

[0052] The gel chamber 56 and curing chamber 57 can be divided into six heating zones according to the number of workstations. The temperature of each heating zone is independently controlled and displayed, and an over-temperature alarm device is provided. The drying tunnel is insulated with aluminum silicate fiber. The machine adopts a hot air circulation method to make the temperature in each zone uniform. The drying tunnel opening is equipped with an insulated door that opens and closes automatically to reduce heat loss.

[0053] Example 2:

[0054] The waste gas catalytic combustion device includes a heat exchanger and a catalytic bed. A flame arrester is installed between the duct 4 and the heat exchanger. The output end of the heat exchanger is connected to the input end of the catalytic bed through a pipe. The output end of the catalytic bed is connected to the input end of the fan through a pipe passing through the heat exchanger.

[0055] The catalyst in the catalytic bed is a metal catalyst, which has a low ignition temperature, high removal efficiency, high catalytic activity, and is also resistant to high temperature, oxidation, and corrosion. The catalyst changes the rate of chemical reaction without participating in the reaction itself, and there is basically no consumption before and after the reaction, resulting in a long service life.

[0056] The metal catalyst is platinum, palladium, rhodium, silver, or ruthenium, or a mixture thereof in any proportion.

[0057] A regenerative catalytic combustion device is connected between the output end of the heat exchanger and the input end of the catalytic bed.

[0058] The regenerative catalytic combustion device is divided into five chambers: three heat exchange chambers, one heating chamber, and one combustion chamber. The output of the combustion chamber is connected to the input of the blower through the three heat exchange chambers.

[0059] For the purification of medium-to-high concentration (500mg / m3-5000 mg / m3) organic waste gas and the purification of low-concentration, high-volume waste gas, under the action of a catalyst, the organic waste gas undergoes flameless combustion at a relatively low ignition temperature (250-400℃), and carbon oxides are oxidized and decomposed into CO2 and H2O, while releasing a large amount of heat energy, thereby achieving the purpose of removing organic matter from the waste gas.

[0060] VOC-containing waste gas is drawn into a heat exchanger by a fan. After being heated by the heat exchanger, it passes through a catalytic burner. At this point, the waste gas has been heated to the catalytic decomposition temperature. Passing through the catalyst bed, catalytic decomposition releases heat energy, while VOCs are decomposed into carbon dioxide and water. After purification, the gas temperature rises and it re-enters the heat exchanger to exchange heat with untreated VOC waste gas, thereby reducing energy consumption.

[0061] Meanwhile, after the exhaust gas is oxidized and combusted and releases heat, it is transferred and exchanged through a 3-stage heat exchanger. The hot air is then sent into the drying tunnel of the continuous vacuum production line by an induced draft fan for stator pre-drying and drying. Excess purified gas is introduced into the chimney by a fan and discharged into the atmosphere in compliance with standards.

[0062] Organic waste gas enters the pre-processor through the upper air inlet of the device. It passes through a coarse filter element composed of multiple layers of stainless steel wire mesh to remove dust and other particulate matter. The gas then enters the combined adsorption bed (two rows of six compartments) through the lower main channel. Each adsorption bed is equipped with a pneumatic switching valve that switches the adsorption bed between adsorption and desorption states. The longitudinal section of the adsorption bed, from bottom to top, consists of the main inlet pipe, adsorption chamber, clean gas chamber, and main outlet pipe. The adsorption chamber and clean gas chamber are separated by a perforated plate. Several adsorption cylinders are suspended below the perforated plate. Waste gas entering the adsorption chamber passes through the adsorption layer via the outer wall of the adsorption cylinders. VOCs molecules are adsorbed by the numerous micropores on the surface of the adsorbent. After purification, the waste gas rises through the perforations of the perforated plate into the clean gas chamber, then through the switching valve into the main outlet pipe and is discharged from the device by a fan. One of the six adsorption chambers must be in the desorption state, while the other five are in the adsorption state.

[0063] Features of the catalytic combustion purification device: First, it uses an adsorption concentration-catalytic combustion process to treat VOCs waste gas. Each unit consists of a pre-filter, an adsorber (composed of 6 adsorption units), an induced draft fan, a catalytic combustion device, a desorption fan, a cooling fan, a control box, automatic valves, and a unified base, forming an integrated unit for easy transportation and installation. Second, it uses a high-performance new adsorbent—activated carbon fiber—to rapidly and efficiently adsorb VOCs molecular clusters, purifying the waste gas to meet emission standards. Third, the 6 adsorption units of the adsorber cycle through adsorption, desorption, and regeneration processes. While purifying large volumes of low-concentration VOCs waste gas, the VOCs in the desorbed gas are concentrated into high-concentration, low-volume VOCs waste gas, significantly saving energy in catalytic combustion purification. Fourth, it uses a programmable logic controller (PLC) and a touch screen for central control, simulating equipment operation and providing a clear overview of the operating status. It features fully automatic control, unattended operation, high reliability, simple operation, and easy maintenance. Fifth, the equipment is small in size and lightweight, saving investment. Sixth, due to the good thermal stability of the composite catalyst fiber (ignition temperature ≥500℃, while the ignition temperature of granular composite catalyst is 400℃), the adsorption / desorption cycle is short, the adsorbent mass packed in each adsorption bed is small, the adsorption layer is thin (generally 30mm), and the heat capacity of the composite catalyst fiber is low, so there will be no problem of excessive temperature rise in the adsorption bed during desorption. In addition, with the guarantee of the automatic control system equipped in the device, the safety performance of the purification device is better than that of the "composite catalyst adsorption concentration-catalytic combustion device". Seventh, the amount of solid waste generated (i.e., waste composite catalyst fiber, catalyst, etc.) is small, only 1 / 20 to 1 / 30 of that of the traditional "composite catalyst adsorption concentration-catalytic combustion device".

[0064] The high-temperature concentrated waste gas collected in the drying tunnel is drawn into a three-stage heat exchanger for heat exchange. It is preheated to 280℃ in the heating chamber (electric heating stops above 300℃; a constant temperature control is provided). The waste gas is then purified by oxidation and decomposition in the catalytic chamber. After the waste gas undergoes oxidation and decomposition and releases heat, it is again purified by the three-stage heat exchanger and discharged through a fan after meeting emission standards. The entire system produces no waste gas emissions, effectively controlling VOCs.

[0065] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A self-heating continuous vacuum stator insulation curing system, characterized in that, It includes a continuous vacuum production unit (1) and a waste gas catalytic combustion unit; The continuous vacuum production device (1) is equipped with an automatic lifting platform (51), which contains a pre-drying chamber (52), a cooling chamber (53), an impregnation chamber (54), a dripping chamber (55), a gelation chamber (56), a curing chamber (57), and a cooling cavity (58), all of which are independent spaces. The continuous vacuum production device (1) is equipped with a front door (11), a middle door (12), and a rear door (13). The continuous vacuum production device (1) is equipped with a production line, which is equipped with a double roller conveyor. A special lifting device (6) is suspended under the production line. The workpieces circulate through the front door (11), the middle door (12), the rear door (13), the double roller conveyor, and the special lifting device (6). The pre-drying chamber (52) is located between the front door (11) and the middle door (12). The cooling chamber (53) is located between the middle door (12) and the impregnation chamber (54). The cooling chamber (53) is located between the impregnation chamber (54) and the rear door (13). The device is equipped with a dripping chamber (55), and the immersion chamber (54) is located between the cooling chamber (53) and the dripping chamber (55). The rear door (13) is equipped with a gel chamber (56) on the side away from the immersion chamber (54). The other end of the gel chamber (56) is connected to a curing chamber (57). The front door (11) is equipped with a circulating double roller conveyor (2) on the side away from the middle door (12), and a special hanging device (6) is provided below it. The top of the continuous vacuum production device (1) is equipped with an air duct (4), which is connected to the catalytic combustion device to form a circulating air duct. The air duct (4) is used to recover the waste gas in the curing chamber (57). The heat generated by the catalytic combustion device of the waste gas is circulated through the air duct for the pre-baking and curing of the workpiece in the continuous vacuum device. The continuous vacuum production device (1) is equipped with an annular roller conveyor inside, and several special hanging devices (6) are provided on the roller conveyor. The special hanging devices (6) are used to suspend the workpiece. The waste gas catalytic combustion device includes a heat exchanger and a catalytic bed. A flame arrester is provided between the air duct (4) and the heat exchanger. The output end of the heat exchanger is connected to the input end of the catalytic bed through a pipe. The output end of the catalytic bed is connected to the input end of the fan through a pipe passing through the heat exchanger.

2. The self-heating continuous vacuum stator insulation curing system according to claim 1, characterized in that, The impregnation chamber (54) includes a vacuum impregnation tank, a vacuum device, an impregnation box cover, and a paint return device. Waste outlets are provided on both sides of the impregnation chamber (54), and the waste outlets are connected to the air duct.

3. The self-heating continuous vacuum stator insulation curing system according to claim 2, characterized in that, An automatic paint receiving protection plate with a sealing rubber strip is installed above the sealing surface of the vacuum impregnation tank.

4. The self-heating continuous vacuum stator insulation curing system according to claim 3, characterized in that, The vacuum impregnation tank is connected to a vacuum system, which includes a vacuum pump, a paint storage tank, a buffer tank, a cleaning tank, an electric ball valve, and a refrigeration unit. The vacuum pump, paint storage tank, buffer tank, cleaning tank, electric ball valve, and refrigeration unit are connected by a vacuum pipe. The paint storage tank is equipped with a level gauge and a drain valve, and a paint filter is installed on the conveying pipeline of the paint storage tank.

5. A self-heating continuous vacuum stator insulation curing system according to claim 4, characterized in that, The outer wall of the paint storage tank is equipped with a jacket, and circulating cooling water is installed inside the jacket.

6. The self-heating continuous vacuum stator insulation curing system according to claim 1, characterized in that, The catalyst in the catalytic bed is a metal catalyst.

7. A self-heating continuous vacuum stator insulation curing system according to claim 6, characterized in that, The metal catalyst is platinum, palladium, rhodium, silver, or ruthenium. Alternatively, the metal catalyst may be a mixture of platinum, palladium, rhodium, silver, and ruthenium in any proportion.

8. The self-heating continuous vacuum stator insulation curing system according to claim 1, characterized in that, A regenerative catalytic combustion device is connected between the output end of the heat exchanger and the input end of the catalytic bed.

9. A self-heating continuous vacuum stator insulation curing system according to claim 8, characterized in that, The regenerative catalytic combustion device is divided into five chambers, which are three heat exchange chambers, one heating chamber, and one combustion chamber. The output end of the combustion chamber is connected to the input end of the fan through the three heat exchange chambers.

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