Vacuum impregnation and drying machine for electric machines

Abstract

The utility model relates to motor processing technical field, concretely is a kind of vacuum paint dipping drying machine for motor, including the first sealing cover being equipped with in drying box top, the inner wall of drying box is equipped with interlayer, be equipped with a plurality of first air hole on interlayer, interlayer is connected with heating equipment through first air pipe, and placing table is horizontally and fixedly arranged in drying box, and a plurality of second air hole are arranged on placing table;Purification tank is fixedly arranged in one side of drying box, and the air inlet on purification tank is connected with the inside of drying box through suction tube, and water inlet is arranged on the purification tank above air inlet;The baffle is fixedly arranged above water inlet, and the air outlet is arranged on baffle, and exhaust assembly is arranged on air outlet;Filtering assembly is arranged at the air outlet on purification tank;The utility model has the advantages of ensuring waste gas emission to reach standard, reducing environmental pollution risk and the like.

Description

Technical Field

[0001] This utility model relates to the field of motor processing technology, specifically a vacuum impregnation and drying machine for motors. Background Technology

[0002] A dryer is a place for drying and curing motor components after impregnation. For this purpose, a patent document discloses a vacuum impregnation and drying device (application number: CN202321762265.6), including a housing assembly and an impregnation and drying assembly. The housing assembly includes a drying chamber and an impregnation chamber, with the drying chamber installed on top of the impregnation chamber. The impregnation and drying assembly includes a drying plate, a lifting component, and a vacuum component. The drying plate is installed on both sides of the drying chamber. The lifting component includes a fixed frame and a motor. The fixed frame is installed inside the drying chamber, and the motor is installed on one side of the fixed frame. The output end of the motor is installed on a take-up roller, and a steel wire rope is wound around the outside of the take-up roller. A rotating component is installed on the free end of the steel wire rope.

[0003] While the aforementioned patent documents improve the efficiency of drying coated items after coating, the device generates waste gas during operation, but it lacks an effective design for waste gas purification. In the face of increasingly stringent environmental protection requirements, this could lead to substandard waste gas emissions, posing a risk of environmental pollution and hindering the implementation of green production concepts. Utility Model Content

[0004] In view of this, the present invention provides a vacuum impregnation and drying machine for motors, which aims to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum impregnation and drying machine for motors, comprising:

[0006] A drying oven is provided with a first sealing cover on its top. The inner wall of the drying oven is provided with a double layer. The double layer is provided with a plurality of first vent holes. The double layer is connected to a heating device through a first vent pipe. A horizontal and fixed placement platform is provided inside the drying oven. The placement platform is provided with a plurality of second vent holes.

[0007] A purification box is fixedly installed on one side of the drying box. The air inlet on the purification box is connected to the inside of the drying box through an air extraction pipe. A water inlet is provided on the purification box above the air inlet.

[0008] A baffle plate is fixed above the water inlet, and the baffle plate is provided with an air outlet, and the air outlet is provided with an exhaust assembly;

[0009] The filter assembly is located at the exhaust port on the purification box.

[0010] A further improvement of this utility model is that the exhaust assembly includes:

[0011] A tapered tube is fixedly installed on the air outlet, with the larger end of the tapered tube facing upwards and the smaller end facing downwards. The larger end of the tapered tube is horizontal and fixedly fitted with a fixing plate.

[0012] The second sealing cover is lifted and lowered at the smaller end of the tapered tube. A first optical axis is fixedly mounted on the second sealing cover. A cap is fixedly mounted on the free end of the first optical axis after passing through the fixed plate.

[0013] The first spring is fixed on the first optical axis between the fixed plate and the second sealing cover.

[0014] A further improvement of this utility model is that the middle part of the baffle plate is horizontally arranged, the two sides are inclined and downward inclined, the air outlet is located horizontally, and the lower ends of both sides of the baffle plate are provided with drain pipes, and the drain pipes are provided with one-way valves.

[0015] A further improvement of this utility model is that the purification box has two exhaust ports, located above the two sides of the baffle plate respectively, and a ventilation channel is provided below the exhaust ports and connected to them. The filter assembly is disposed in the ventilation channel, and the filter assembly includes:

[0016] The demister is fixedly installed inside the ventilation channel;

[0017] An activated carbon filter plate is fixedly installed on the exhaust port.

[0018] A further improvement of this utility model is that the first sealing cover opens and closes under the drive of the opening and closing assembly, the opening and closing assembly comprising:

[0019] The first connecting rod is horizontally positioned above the first sealing cover, and the first end of the first connecting rod is hinged to the upper end of the first sealing cover.

[0020] The second connecting rod is inclined on one side of the first sealing cover, with its first end fixedly connected to the second end of the first connecting rod, and the second end of the second connecting rod hinged to the drying oven;

[0021] The third link is perpendicular to the second link, and the first end of the third link is fixedly connected to the second link;

[0022] A hydraulic cylinder, the cylinder body of which is hinged to the drying chamber, and the end of the piston rod of the hydraulic cylinder is hinged to the second end of the third connecting rod.

[0023] A further improvement of this utility model is that the opening and closing component further includes:

[0024] Two first screws are arranged parallel to each other on both sides of the first connecting rod, and the lower ends of the two first screws are respectively fixedly connected to the first sealing cover;

[0025] A horizontal plate is horizontally positioned below the first connecting rod, with the upper surface of the horizontal plate abutting against the lower surface of the first connecting rod, and the two sides of the horizontal plate being threadedly connected to the two first screws respectively.

[0026] A pressure plate is horizontally positioned above the first connecting rod. The lower surface of the pressure plate abuts against the upper surface of the first connecting rod. The two sides of the pressure plate are threadedly connected to the two first screws respectively. Two nuts are provided above the pressure plate, and the nuts are threadedly connected to the corresponding first screws.

[0027] A further improvement of this utility model is that a plurality of first locking plates are fixedly provided in the circumferential direction at the lower end of the first sealing cover, and a first through hole is provided on the side of the first locking plate facing outward. A plurality of second locking plates corresponding one-to-one with the plurality of first locking plates are provided at the upper end of the drying box, and a second through hole is provided on the second locking plate that is parallel to and opposite to the first through hole.

[0028] Multiple second screws correspond one-to-one with multiple first through holes. The second screws pass through the first through holes and are hinged to the second through holes. A threaded sleeve is screwed onto the second screw above the first through holes.

[0029] A further improvement of this invention is that the demister includes a plurality of corrugated plates spaced apart.

[0030] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0031] This invention provides a vacuum impregnation and drying machine for motors. By incorporating a purification chamber, waste gas generated in the drying chamber is introduced into the purification chamber via an extraction pipe. A treatment liquid can be injected into the purification chamber, ensuring full contact between the rising waste gas and the treatment liquid, effectively absorbing pollutants in the waste gas. The baffle plate extends the contact time between the waste gas and the treatment liquid, further improving the purification effect. Simultaneously, the filter assembly at the exhaust port includes a demister and an activated carbon filter plate. The corrugated plate of the demister separates water mist from the waste gas, while the activated carbon filter plate adsorbs residual organic pollutants. Compared with existing technologies, the synergistic effect of multiple purification methods ensures that waste gas emissions meet standards, reduces environmental pollution risks, and aligns with the concept of green production. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the dryer described in this utility model;

[0034] Figure 2 This is a schematic diagram of the internal structure of the drying chamber of the dryer described in this utility model;

[0035] Figure 3 This is a schematic diagram of the exhaust assembly of the dryer described in this utility model;

[0036] Figure 4 This is a schematic diagram of the opening and closing components of the dryer described in this utility model;

[0037] Figure 5 This is a schematic diagram of the locking state of the dryer described in this utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] 10-Drying oven, 101-Ampetual layer, 102-First vent, 103-First vent pipe, 104-Heating equipment, 11-First sealing cover, 12-Placement platform, 121-Second vent, 13-Purification box, 131-Exhaust pipe, 132-Water inlet, 14-Baffle plate, 141-Drain pipe, 15-Ventilation channel, 16-Demister, 17-Activated carbon filter plate, 20-Exhaust assembly, 21-Conical pipe, 22- Fixed plate, 23-Second sealing cover, 24-First optical axis, 241-Cap, 25-First spring, 30-Opening and closing assembly, 31-First connecting rod, 32-Second connecting rod, 33-Third connecting rod, 34-Hydraulic cylinder, 35-First screw, 36-Horizontal plate, 37-Pressure plate, 38-Nut, 40-First locking plate, 41-First through hole, 42-Second locking plate, 43-Second through hole, 44-Second screw, 45-Threaded sleeve. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, in the following description, specific details such as particular system structures and technologies are set forth for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art should understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details hindering the description of the present invention.

[0041] This utility model provides a vacuum impregnation and drying machine for motors, as detailed in the attached instruction manual. Figure 1 To be continued Figure 5 It can be seen that a vacuum impregnation and drying machine for motors mainly includes the following parts or components: drying box 10, purification box 13, baffle plate 14, and filter assembly.

[0042] In this utility model, the top of the drying oven 10 is provided with a first sealing cover 11, the inner wall of the drying oven 10 is provided with a sandwich layer 101, the sandwich layer 101 is provided with a plurality of first vent holes 102, the sandwich layer 101 is connected to the heating equipment 104 through a first vent pipe 103, a horizontal and fixed placement platform 12 is provided inside the drying oven 10, the placement platform 12 is provided with a plurality of second vent holes 121; the purification box 13 is fixedly installed on one side of the drying oven 10, the air inlet of the purification box 13 is connected to the inside of the drying oven 10 through an exhaust pipe 131, and a water inlet 132 is provided on the purification box 13 above the air inlet; the baffle plate 14 is fixedly installed above the water inlet 132, the baffle plate 14 is provided with an air outlet (not shown in the figure), and an exhaust assembly 20 is provided on the air outlet; the filter assembly is located at the exhaust outlet (not shown in the figure) on the purification box 13.

[0043] Open the first sealing cover 11 and place the paint-impregnated motor components on the placement platform 12 inside the drying oven 10. Then, close the first sealing cover 11. At the same time, inject an appropriate amount of treatment liquid into the water inlet 132 of the purification box 13 and turn on the heating device 104. The hot air generated by the heating device 104 enters the interlayer 101 of the inner wall of the drying oven 10 through the first vent pipe 103. The hot air is evenly diffused into the interior of the drying oven 10 through multiple first vent holes 102 on the interlayer 101 and multiple second vent holes 121 on the placement platform 12, providing comprehensive and even heat distribution to the components. The motor components on the platform 12 are heated and dried to ensure uniform heating and efficient drying and curing. During the drying process, the exhaust gas generated in the drying chamber 10 is introduced into the purification chamber 13 by the exhaust pipe 131. After entering the purification chamber 13, the exhaust gas comes into full contact with the treatment liquid injected by the inlet 132. Due to the presence of the baffle plate 14 and the exhaust assembly 20, the contact time between the exhaust gas and the treatment liquid is extended. The rising exhaust gas passes through the exhaust assembly 20 and enters the filter assembly. The filtered gas can be safely discharged to ensure that the exhaust gas meets the emission standards.

[0044] Specifically, the generated exhaust gas can be drawn into the purification box 13 through the exhaust pipe 131 using existing equipment such as an exhaust fan.

[0045] Specifically, there are various types of heating equipment 104 in the existing technology, which will not be elaborated here.

[0046] As one embodiment, in conjunction with the appendix to the specification Figure 3 It is known that the exhaust assembly 20 includes a tapered tube 21, which is fixed on the exhaust port. The larger end of the tapered tube 21 faces upward and the smaller end faces downward. The larger end of the tapered tube 21 is horizontal and fixed with a fixing plate 22. The second sealing cover 23 is raised and lowered on the smaller end of the tapered tube 21. The second sealing cover 23 is fixed with a first optical axis 24. The free end of the first optical axis 24 passes through the fixing plate 22 and is fixed with a cap 241. The first spring 25 is fixed on the first optical axis 24 between the fixing plate 22 and the second sealing cover 23.

[0047] During the drying process, when the air pressure inside the purification chamber 13 is lower than the preload of the first spring 25, the first spring 25 presses the second sealing cover 23 tightly against the smaller end of the conical tube 21, forming a seal to prevent untreated waste gas from being directly discharged, allowing the waste gas to be purified by the treatment liquid. At this time, the cap 241 is in contact with the fixing plate 22. As the drying process continues, waste gas accumulates continuously inside the purification chamber 13, and the air pressure gradually increases. When the waste gas pressure exceeds the preload of the first spring 25, the air pressure pushes the second sealing cover 23 upward. The second sealing cover 23 moves along the first light... The shaft 24 rises axially, compressing the first spring 25. The exhaust gas begins to enter the tapered tube 21 through the smaller end of the tapered tube 21. After entering the tapered tube 21, the exhaust gas rises until it reaches the filter assembly. The exhaust gas is then filtered and discharged. When the air pressure in the purification chamber 13 drops below the preload of the first spring 25, the first spring 25 restores its elastic deformation, pushing the second sealing cover 23 downward until it re-seals the smaller end of the tapered tube 21. This design can effectively extend the time that the exhaust gas spends in the treatment liquid, ensuring that it is always treated in the treatment liquid until the pressure reaches the required level.

[0048] As one embodiment, in conjunction with the appendix to the specification Figure 1 It can be seen that the middle of the baffle plate 14 is horizontally set, and the two sides are inclined downwards. The air outlet is located at the horizontal position. Drain pipes 141 are provided at the lower ends of both sides of the baffle plate 14. A one-way valve (not shown in the figure) is provided in the drain pipe 141. There are two exhaust ports (not shown in the figure) on the purification box 13, which are located above the two sides of the baffle plate 14 respectively. A ventilation channel 15 is provided below the exhaust port and connected to it. The filter assembly is located in the ventilation channel 15. The filter assembly includes a demister 16, which is fixed in the ventilation channel 15. The activated carbon filter plate 17 is fixed on the exhaust port. The demister 16 includes multiple corrugated plates arranged at intervals.

[0049] After initial purification, the exhaust gas enters the ventilation channel 15 after passing through the exhaust assembly 20. Within the ventilation channel 15, the exhaust gas first passes through a demister 16 composed of multiple spaced corrugated plates. The special structure of the corrugated plates causes the exhaust gas to change direction multiple times as it passes through. Water mist carried within the gas collides with the corrugated plates due to inertia, condensing into larger droplets before falling, thus achieving gas-liquid separation and removing the water mist from the exhaust gas. Subsequently, the exhaust gas continues to rise, passing through an activated carbon filter plate 17 fixed to the exhaust port. Activated carbon, with its abundant pore structure and large specific surface area, can adsorb residual organic pollutants and odors in the exhaust gas, further purifying it. Simultaneously, larger water droplets fall from the corrugated plates onto both sides of the baffle plate 14, then flow into the drain pipe 141, thus re-entering the treatment liquid below the baffle plate 14. A one-way valve prevents the exhaust gas below the baffle plate 14 from escaping through the drain pipe 141 while the water droplets flow into the treatment liquid.

[0050] As one embodiment, in conjunction with the appendix to the specification Figure 4 It can be seen that the first sealing cover 11 opens and closes under the drive of the opening and closing assembly 30. The opening and closing assembly 30 includes a first connecting rod 31, which is horizontally arranged above the first sealing cover 11. The first end of the first connecting rod 31 is hinged to the upper end of the first sealing cover 11. The second connecting rod 32 is inclined on one side of the first sealing cover 11. Its first end is fixedly connected to the second end of the first connecting rod 31. The second end of the second connecting rod 32 is hinged to the drying box 10. The third connecting rod 33 is perpendicular to the second connecting rod 32. The first end of the third connecting rod 33 is fixedly connected to the second connecting rod 32. The cylinder body of the hydraulic cylinder 34 is hinged to the drying box 10. The piston rod end of the hydraulic cylinder 34 is hinged to the second end of the third connecting rod 33. The opening and closing assembly 30 also includes two first screws 35, which are arranged parallel to each other on both sides of the first connecting rod 31. The lower ends of the two first screws 35 are fixedly connected to the first sealing cover 11 respectively. The horizontal plate 36 is arranged horizontally below the first connecting rod 31. The upper surface of the horizontal plate 36 abuts against the lower surface of the first connecting rod 31. The two sides of the horizontal plate 36 are threadedly connected to the two first screws 35 respectively. The pressure plate 37 is arranged horizontally above the first connecting rod 31. The lower surface of the pressure plate 37 abuts against the upper surface of the first connecting rod 31. The two sides of the pressure plate 37 are threadedly connected to the two first screws 35 respectively. Two nuts 38 are provided above the pressure plate 37. The nuts 38 are threadedly connected to the corresponding first screws 35.

[0051] When it is necessary to open the first sealing cover 11 to place or remove the motor components, the hydraulic cylinder 34 is activated. The cylinder body of the hydraulic cylinder 34 is hinged to the drying chamber 10, and the end of the piston rod is hinged to the second end of the third connecting rod 33. At this time, the piston rod of the hydraulic cylinder 34 begins to extend, and the extension of the piston rod pulls the third connecting rod 33. Since the third connecting rod 33 is fixedly connected to the second connecting rod 32, and the second end of the second connecting rod 32 is hinged to the drying chamber 10, the third connecting rod 33 drives the second connecting rod 32 to rotate around the drying chamber 10. The hinge point swings upward, and the second connecting rod 32 is fixedly connected to the first connecting rod 31, thus driving the horizontally set first connecting rod 31 to move away from the center of the drying chamber 10. The first connecting rod 31 drives the first sealing cover 11 to move away from the drying chamber 10. When the first connecting rod 31 moves, it drives the pressure plate 37, the horizontal plate 36, the first screw 35, and the two nuts 38 to move synchronously, which can prevent the first sealing cover 11 from shaking until the first sealing cover 11 is fully opened, which is convenient for the operator to carry out related work. To close, simply reverse the operation.

[0052] Specifically, a horizontal plate 36, a pressure plate 37, two first screws 35, two nuts 38, and the first end of the first connecting rod 31 are hinged to the upper end of the first sealing cover 11. This method fixes the first connecting rod 31 to the first sealing cover 11, which facilitates the installation and disassembly of the first connecting rod 31 and the first sealing cover 11.

[0053] In this embodiment, refer to the appendix to the specification. Figure 5It can be seen that a plurality of first locking plates 40 are fixedly provided in the circumferential direction at the lower end of the first sealing cover 11. The first locking plate 40 is provided with a first through hole 41 on the side facing outward. The upper end of the drying oven 10 is provided with a plurality of second locking plates 42 corresponding to the plurality of first locking plates 40. The second locking plate 42 is provided with a second through hole 43 parallel to and opposite to the first through hole 41. A plurality of second screws 44 are corresponding to the plurality of first through holes 41. The second screws 44 pass through the first through hole 41 and are hinged to the second through hole 43. A threaded sleeve 45 is screwed onto the second screws 44 above the first through hole 41.

[0054] After the opening and closing assembly 30 smoothly covers the first sealing cover 11 onto the drying oven 10, the locking operation begins. The second screw 44 rotates around the hinge point until it enters the first through hole 41 and is in a vertical position. Then, the threaded sleeve 45 is screwed onto the second screw 44 located above the first through hole 41. By rotating the threaded sleeve 45 clockwise, the threaded sleeve 45 gradually moves down until it abuts against the upper surface of the first locking plate 40. At the same time, the second screw 44 generates an upward pulling force on the second locking plate 42. Under the combined action of the two, the first locking plate 40 and the second locking plate 42 fit tightly together, firmly fixing the first sealing cover 11 onto the drying oven 10, effectively preventing gas from escaping and ensuring airtightness.

[0055] It should be noted that in this patent application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A vacuum impregnation and drying machine for motors, characterized in that, include: A drying oven is provided with a first sealing cover on its top. The inner wall of the drying oven is provided with a double layer. The double layer is provided with a plurality of first vent holes. The double layer is connected to a heating device through a first vent pipe. A horizontal and fixed placement platform is provided inside the drying oven. The placement platform is provided with a plurality of second vent holes. A purification box is fixedly installed on one side of the drying box. The air inlet on the purification box is connected to the inside of the drying box through an air extraction pipe. A water inlet is provided on the purification box above the air inlet. A baffle plate is fixed above the water inlet, and the baffle plate is provided with an air outlet, and the air outlet is provided with an exhaust assembly; The filter assembly is located at the exhaust port on the purification box.

2. The vacuum impregnation and drying machine for motors according to claim 1, characterized in that, The exhaust assembly includes: A tapered tube is fixedly installed on the air outlet, with the larger end of the tapered tube facing upwards and the smaller end facing downwards. The larger end of the tapered tube is horizontal and fixedly fitted with a fixing plate. The second sealing cover is lifted and lowered at the smaller end of the tapered tube. A first optical axis is fixedly mounted on the second sealing cover. A cap is fixedly mounted on the free end of the first optical axis after passing through the fixed plate. The first spring is fixed on the first optical axis between the fixed plate and the second sealing cover.

3. The vacuum impregnation and drying machine for motors according to claim 1, characterized in that, The baffle plate is horizontally positioned in the middle and inclined downwards on both sides. The air outlet is located horizontally. Drain pipes are provided at the lower ends of both sides of the baffle plate, and one-way valves are installed inside the drain pipes.

4. A vacuum impregnation and drying machine for motors according to claim 3, characterized in that, The purification box has two exhaust ports, located above the baffle plate on both sides respectively. Below each exhaust port is a ventilation channel communicating with it. The filter assembly is located within the ventilation channel and includes: The demister is fixedly installed inside the ventilation channel; An activated carbon filter plate is fixedly installed on the exhaust port.

5. A vacuum impregnation and drying machine for motors according to claim 1, characterized in that, The first sealing cover opens and closes under the drive of an opening and closing assembly, the opening and closing assembly comprising: The first connecting rod is horizontally positioned above the first sealing cover, and the first end of the first connecting rod is hinged to the upper end of the first sealing cover. The second connecting rod is inclined on one side of the first sealing cover, with its first end fixedly connected to the second end of the first connecting rod, and the second end of the second connecting rod hinged to the drying oven; The third link is perpendicular to the second link, and the first end of the third link is fixedly connected to the second link; A hydraulic cylinder, the cylinder body of which is hinged to the drying chamber, and the end of the piston rod of the hydraulic cylinder is hinged to the second end of the third connecting rod.

6. A vacuum impregnation and drying machine for motors according to claim 5, characterized in that, The opening and closing component also includes: Two first screws are arranged parallel to each other on both sides of the first connecting rod, and the lower ends of the two first screws are respectively fixedly connected to the first sealing cover; A horizontal plate is horizontally positioned below the first connecting rod, with the upper surface of the horizontal plate abutting against the lower surface of the first connecting rod, and the two sides of the horizontal plate being threadedly connected to the two first screws respectively. A pressure plate is horizontally positioned above the first connecting rod. The lower surface of the pressure plate abuts against the upper surface of the first connecting rod. The two sides of the pressure plate are threadedly connected to the two first screws respectively. Two nuts are provided above the pressure plate, and the nuts are threadedly connected to the corresponding first screws.

7. A vacuum impregnation and drying machine for motors according to claim 6, characterized in that, The lower end of the first sealing cover is fixed with a plurality of first locking plates in the circumferential direction. The first locking plate has a first through hole on the side facing outward. The upper end of the drying box is provided with a plurality of second locking plates corresponding to the plurality of first locking plates. The second locking plates have second through holes that are parallel to and opposite to the first through holes. Multiple second screws correspond one-to-one with multiple first through holes. The second screws pass through the first through holes and are hinged to the second through holes. A threaded sleeve is screwed onto the second screw above the first through holes.

8. A vacuum impregnation and drying machine for motors according to claim 4, characterized in that, The demister includes multiple corrugated plates spaced apart.

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