Vacuum drying tank

Abstract

The invention relates to the technical field of transformer processing, and discloses a vacuum drying tank which comprises a base, a tank body assembly arranged on the base, a vacuum pump assembly, a heating assembly and a transmission assembly. The conveying assembly comprises a conveying frame arranged outside the tank body, two rotating shafts rotationally arranged on the conveying frame, a conveying belt arranged on the two rotating shafts in a sleeving mode, a positive and negative rotation motor connected to one rotating shaft and a conveying table arranged on the conveying belt, the conveying table is used for containing the oil-immersed transformer, and a first guide rail is arranged on the conveying frame; a second guide rail is arranged in the tank body, and a plurality of pulleys are arranged on the side, close to the conveying frame, of the conveying table and rotationally arranged in the first guide rail and the second guide rail. According to the oil-immersed transformer conveying device, the conveying assembly and the anti-falling device are arranged on the conveying table, so that the oil-immersed transformer can be conveniently put into the tank body, and the possibility of damage caused by inclination of the oil-immersed transformer can be effectively reduced.

Description

Technical Field

[0001] This application relates to the technical field of transformer processing, and in particular to a vacuum drying tank. Background Art

[0002] The oil-immersed transformer is a high-voltage power equipment that uses insulating oil as the main cooling and insulating medium. Its windings and iron core are completely immersed in the oil, and heat dissipation and electrical isolation are achieved through the circulation of the oil. During the manufacturing process of the oil-immersed transformer, air, moisture and other impurities are easily mixed into the interior. These impurities will reduce the dielectric strength of the insulating oil and increase the risk of short circuit or discharge. Through vacuum drying treatment, the impurities in the insulating oil can be effectively removed.

[0003] In the related art, a vacuum drying tank is used to perform vacuum drying treatment on the oil-immersed transformer. The vacuum drying tank includes a base, a tank body assembly arranged on the base, a vacuum pump assembly and a heating assembly. The tank body assembly includes a tank body, a tank cover arranged on the tank body and a sealing ring arranged on the tank body. The vacuum pump assembly includes a vacuum pump for pumping out the air in the tank body and a connecting pipeline. The heating assembly includes a heating plate and a temperature controller. The heating plate is arranged on the inner wall of the tank body for heating the oil-immersed transformer, and the temperature controller is arranged on the outer wall of the tank body and is electrically connected to the heating plate for controlling the temperature in the tank body.

[0004] However, when the above-mentioned vacuum drying tank performs vacuum treatment on the oil-immersed transformer, the staff needs to first open the tank cover, then move the oil-immersed transformer into the vacuum drying tank, and finally close the tank cover. However, the oil-immersed transformer is usually heavy and it takes a lot of time to move manually, so there is room for improvement. Summary of the Invention

[0005] In order to facilitate the placement of the oil-immersed transformer into the vacuum drying tank, this application provides a vacuum drying tank.

[0006] The vacuum drying tank provided by this application adopts the following technical solutions: A vacuum drying tank, comprising a base, a tank body assembly arranged on the base, a vacuum pump assembly and a heating assembly. The tank body assembly includes a tank body, a tank cover arranged on the tank body and a sealing ring arranged on the tank body. The vacuum pump assembly includes a vacuum pump for pumping out the air in the tank body and a connecting pipe. The heating assembly includes a heating plate and a temperature controller. The heating plate is arranged on the inner wall of the tank body, and the temperature controller is arranged on the outer wall of the tank body and electrically connected to the heating plate. It further includes a transmission assembly. The transmission assembly includes a transmission rack arranged outside the tank body, two rotating shafts rotatably arranged on the transmission rack, a conveyor belt sleeved on the two rotating shafts, a forward and reverse motor connected to one of the rotating shafts, and a transmission table arranged on the conveyor belt. The transmission table is used for placing an oil-immersed transformer. The two ends of the conveyor belt are respectively sleeved on different rotating shafts. The transmission rack is provided with a first guide rail, and the inside of the vacuum drying tank is provided with a second guide rail. The side of the transmission table close to the transmission rack is provided with a plurality of pulleys, and the pulleys are rotatably arranged in the first guide rail and the second guide rail.

[0007] By adopting the above technical solution, when the oil-immersed transformer needs to be placed into the tank body, just open the tank cover first, then place the oil-immersed transformer on the transmission table, and then start the forward and reverse motor. The forward and reverse motor will drive the rotating shaft to start rotating, the conveyor belt will rotate with the rotating shaft, and at the same time the conveyor belt drives the transmission table to slide on the transmission rack, that is, the pulley slides on the first guide rail. When all the pulleys slide into the second guide rail, the transmission table and the oil-immersed transformer are moved into the tank body, and finally close the tank cover.

[0008] When the oil-immersed transformer needs to be removed from the tank body, just push one end of the transmission table close to the transmission rack onto the transmission rack so that the pulley enters the first guide rail, and then start the forward and reverse motor to reverse. At this time, the conveyor belt and the pulley will start to rotate in the opposite direction, so as to move the transmission table onto the transmission rack, and the oil-immersed transformer can be removed from the tank body. By moving the oil-immersed transformer in the above way, compared with manually moving the oil-immersed transformer, it saves time and effort and is convenient to put the oil-immersed transformer into the tank body.

[0009] Optionally, a plurality of anti-slip grooves are formed on the side of the transmission table close to the conveyor belt, and rotating racks engaged with the anti-slip grooves are arranged on the conveyor belt.

[0010] By adopting the above technical solution, when the conveyor belt drives the transmission table to move, the gears of the rotating rack will extend into the anti-slip grooves. Compared with the contact surface between the transmission table and the conveyor belt being a plane, the transmission table is less likely to slide relative to the conveyor belt, so that the transportation effect of the conveyor belt on the transmission table is more stable.

[0011] Optionally, an anti - tipping device is provided on the transfer table. The pulleys are oppositely arranged on the transfer table. The anti - tipping device includes a first straight - bevel gear arranged on the rotating shaft of the pulley, a positioning lead screw connected to the rotating shaft of the first straight - bevel gear, and a lateral positioning plate rotatably connected to the positioning lead screw. One first straight - bevel gear is provided on each of the two oppositely arranged pulleys. Two positioning lead screws are provided and are respectively connected to each first straight - bevel gear. Two lateral positioning plates are provided and are respectively rotatably connected to each positioning lead screw. The transfer table includes a placement plate for placing the oil - immersed transformer. The two lateral positioning plates are respectively arranged on both sides of the placement plate. The height of the lateral positioning plate is greater than the height of the oil - immersed transformer. A fixing hole for the lateral positioning plate to pass through is provided on the transfer table. The lateral positioning plate is slidably arranged on the hole wall of the fixing hole. When the pulley rolls into the tank, the two lateral positioning plates move towards each other.

[0012] By adopting the above - mentioned technical solution, after the oil - immersed transformer is placed on the transfer table, when the transfer table moves into the tank, the pulley rotates from the first guide rail to the second guide rail direction, and at the same time drives the two first straight - bevel gears to rotate, thereby driving the positioning lead screw to rotate relative to the lateral positioning plate, making the two lateral positioning plates slide towards each other in the fixing hole, so as to limit the oil - immersed transformer between the two lateral positioning plates, making it difficult for the oil - immersed transformer to tilt along the direction of the lateral positioning plate during the sliding process of the transfer table, reducing the possibility of the oil - immersed transformer being damaged when moving. And the first straight - bevel gear is driven to rotate by the pulley, without the need to separately set up a driving source to drive the first straight - bevel gear to rotate, reducing the number of driving sources and being beneficial to energy conservation.

[0013] Optionally, the anti - tipping device further includes a second straight - bevel gear rotatably arranged on the transfer table, a limiting lead screw connected to the rotating shaft of the second straight - bevel gear, and a vertical positioning plate rotatably connected to the limiting lead screw. The height of the vertical positioning plate is greater than the height of the oil - immersed transformer. One second straight - bevel gear is provided on each side of each first straight - bevel gear. The second straight - bevel gears are all meshed with the first straight - bevel gear. The rotation direction of the second straight - bevel gear is perpendicular to the rotation direction of the pulley. The limiting lead screw is arranged on the side where the two second straight - bevel gears are away from each other. A sliding hole for the vertical positioning plate to pass through is provided on the transfer table. The vertical positioning plate is slidably arranged on the hole wall of the sliding hole. The two vertical positioning plates are respectively arranged on both sides of the placement plate. When the pulley rolls into the tank, the two vertical positioning plates move towards each other.

[0014] By adopting the above technical solution, when the pulley rotates in the direction close to the tank body, it will drive the first spur bevel gear to rotate in the direction close to the tank body, thereby driving the second spur bevel gear to rotate, and then the second spur bevel gear drives the limiting screw to rotate, and then the limiting screw drives the two vertical positioning plates to slide in the direction close to each other. When the transmission platform is moved into the tank body as a whole, the two vertical positioning plates abut against the side walls of the placement plate, thereby limiting the oil-immersed transformer located on the placement plate, making it difficult for the oil-immersed transformer to tilt in the direction of the two vertical positioning plates, further reducing the risk of the oil-immersed transformer being damaged.

[0015] Optionally, a fixing assembly is provided on the side of the second guide rail close to the first guide rail, and the fixing assembly includes a stop block and a stop spring arranged on the second guide rail, the stop block is provided with a guide slope, and the guide slope is inclined in the direction in which the pulley extends into the second guide rail, and the second guide rail is provided with a stop groove for accommodating the stop block and the stop spring, and an installation groove connected to the stop groove, the stop spring has a tendency to drive the stop block to extend out of the stop groove, and a movable block is slidably arranged in the installation groove, and the movable block is connected to the stop block.

[0016] By adopting the above technical solution, after the oil-immersed transformer is moved into the tank body, the last pulley entering the second guide rail first abuts against the guide slope, and then the stop block is pushed into the stop groove. When the last pulley moves to the side of the stop block away from the transmission frame, the stop block will move out of the stop groove under the action of the stop spring. At this time, the stop block abuts against the side of the pulley close to the transmission frame. The stop block can prevent the pulley from rotating toward the side close to the transmission frame, making it difficult for the transmission platform and the oil-immersed transformer to move out of the tank body, thereby facilitating the subsequent pressing of the tank cover onto the opening of the tank body, so that the oil-immersed transformer is not easy to slide relative to the second guide rail during processing, and has high stability.

[0017] Optionally, the tank body is provided with a sealing assembly for moving the tank cover to a position opposite to the tank body opening, the sealing assembly includes a first rotating shaft arranged on the outer wall of the tank body, a second rotating shaft arranged on the tank cover, a connecting rod connected between the first rotating shaft and the second rotating shaft, and a pressing piece arranged on the tank body, the connecting rod is rotatably connected to the first rotating shaft, and the second rotating shaft is rotatably connected to the connecting rod, when the first rotating shaft and the second rotating shaft rotate, the tank cover moves to a position opposite to or staggered with the opening of the tank body, and the pressing piece is used to press the tank cover against the side wall of the tank body.

[0018] By adopting the above technical solution, when the tank body needs to be closed, it is only necessary to rotate the tank cover so that the second rotating shaft rotates relative to the connecting rod, and at the same time the connecting rod rotates relative to the first rotating shaft, so that the tank cover rotates to a position opposite to the opening of the tank body. At this time, the tank cover can close the opening of the tank body, and then the tank cover can be pressed onto the tank body by the pressing member. The operation is simple.

[0019] Optionally, the clamping member includes a clamping rod hingedly arranged on the tank body, a limit block connected to the clamping rod, and a locking bolt threadedly connected to the limit block, and the locking bolt is threadedly connected to the tank cover and the tank body.

[0020] By adopting the above technical solution, when the tank cover needs to be fixed on the tank body, it is only necessary to first rotate the tank cover to a position opposite to the opening of the tank body, and then rotate the clamping rod so that the limit block presses the tank cover against the tank body. At this time, the limit block is located on the side of the tank cover away from the tank body, and the tank cover is located between the groove formed by the limit block and the clamping rod. Finally, the locking bolt is tightened on the tank cover and the tank body. The operation is simple and the connection stability of the tank cover and the tank body is high.

[0021] Optionally, a handle is provided on a side of the tank cover away from the tank body.

[0022] By adopting the above technical solution, when the tank cover needs to be rotated, the tank cover can be rotated by holding the handle, which increases the fulcrum of the hand and facilitates the rotation of the tank cover. Compared with directly pulling the edge of the tank cover, it is less likely to pinch the hand, thereby reducing the risk of accidental work-related injuries.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The oil-immersed transformer is automatically moved into or out of the tank through the transmission component, making the movement of the oil-immersed transformer more convenient and quick. A fixing component is provided on the second guide rail, making it less likely for the oil-immersed transformer to shake after being moved into the tank; 2. By installing an anti-fall device on the transfer platform, the oil-immersed transformer is not easily tilted during movement, reducing the risk of damage to the oil-immersed transformer; 3. The horizontal positioning plate and the vertical positioning plate are movably arranged to facilitate the placement of the oil-immersed transformer on the transfer platform. The first spur bevel gear and the second spur bevel gear are both driven to rotate by pulleys, which reduces the number of driving sources and is conducive to saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall structural diagram of an embodiment of the present application.

[0025] Figure 2 It is a schematic diagram of the local structure used to demonstrate the anti-slip groove in the embodiment of the present application.

[0026] Figure 3 This is a schematic diagram of the partial structure of the embodiment of the present application for displaying the pulley after the conveyor belt, rotating shaft and forward and reverse motor are hidden.

[0027] Figure 4 It is a schematic diagram of the partial cross-sectional structure used to illustrate the fixing component in the embodiment of the present application.

[0028] Figure 5 It is a schematic diagram of the partial structure of the pressing member in the embodiment of the present application.

[0029] 1. Base; 2. Tank assembly; 21. Tank body; 211. Second guide rail; 212. Stopping groove; 213. Mounting groove; 214. Movable block; 22. Tank cover; 23. Sealing ring; 24. Handle; 3. Vacuum pump assembly; 31. Vacuum pump; 32. Connecting pipe; 4. Heating assembly; 41. Heating plate; 42. Temperature controller; 5. Transmission assembly; 51. Transmission rack; 511. First guide rail; 52. Rotating shaft; 53. Conveyor belt; 531. Rotating rack; 54. Forward and reverse motor; 55. Transmission table; 551. Anti-slip groove; 552. Pulley; 553. Placing plate; 554. Fixing hole; 555. Sliding hole; 6. Sealing assembly; 61. First rotating shaft; 62. Second rotating shaft; 63. Connecting rod; 64. Pressing member; 641. Pressing rod; 642. Limiting block; 643. Locking bolt; 7. Fixing assembly; 71. Stopping block; 711. Guide inclined surface; 72. Stopping spring; 8. Anti-toppling device; 81. First straight bevel gear; 82. Positioning screw rod; 83. Horizontal positioning plate; 84. Second straight bevel gear; 85. Limiting screw rod; 86. Vertical positioning plate. Detailed implementation mode

[0030] The following will Figures 1-5 further describe the present application in detail with reference to the attached

[0031] The embodiment of the present application discloses a vacuum drying tank.

[0032] Refer to Figure 1 , a vacuum drying tank includes a base 1, a tank assembly 2 arranged on the base 1, a vacuum pump assembly 3 arranged on the tank assembly 2, a heating assembly 4 arranged on the tank assembly 2, a transmission assembly 5 for transmitting an oil-immersed transformer, and a sealing assembly 6 for fixing the tank cover 22 on the tank body 21. The tank assembly 2 includes a tank body 21, a tank cover 22 arranged on the tank body 21, and a sealing ring 23 arranged on the tank body 21. A handle 24 is provided on the side of the tank cover 22 away from the tank body 21. The vacuum pump assembly 3 includes a vacuum pump 31 for pumping out the air in the tank body 21 and a connecting pipe 32. The heating assembly 4 includes a heating plate 41 and a temperature controller 42. The heating plate 41 is arranged on the inner wall of the tank body 21, and the temperature controller 42 is arranged on the outer wall of the tank body 21 and is electrically connected to the heating plate 41.

[0033] Refer to Figure 1 and Figure 2, the transmission component 5 includes a transmission frame 51 arranged outside the tank body 21, two rotating shafts 52 rotatably arranged on the transmission frame 51, a conveyor belt 53 sleeved on the two rotating shafts 52, a forward and reverse motor 54 connected to one of the rotating shafts 52, and a transmission table 55 arranged on the conveyor belt 53. There are two conveyor belts 53, and both ends of each conveyor belt 53 are respectively sleeved on the two ends of different rotating shafts 52. The transmission table 55 is used to place the oil-immersed transformer, and a plurality of anti-slip grooves 551 are opened on one side of the transmission table 55 close to the conveyor belt 53. Rotating racks 531 engaged with the anti-slip grooves 551 are arranged on both conveyor belts 53.

[0034] Referring to Figure 3 , a plurality of pulleys 552 are arranged on one side of the transmission table 55 close to the transmission frame 51. The pulleys 552 are oppositely arranged on the transmission table 55. A first guide rail 511 for the pulleys 552 to rotatably arrange therein is arranged on the transmission frame 51. A second guide rail 211 for the pulleys 552 to rotatably arrange therein is arranged inside the tank body 21. The first guide rail 511 and the second guide rail 211 are on the same horizontal plane, facilitating the pulleys 552 to slide between the first guide rail 511 and the second guide rail. Through the above settings, the transmission table 55 will enter the second guide rail 211 inside the tank body 21 during the sliding process of the pulleys 552, thereby sending the oil-immersed transformer into the tank body 21, which is convenient and fast.

[0035] Referring to Figure 3 and Figure 4 , a fixing component 7 is arranged on one side of the second guide rail 211 close to the first guide rail 511. The fixing component 7 includes a stop block 71 and a stop spring 72 arranged on the second guide rail 211. A guide inclined surface 711 inclined in the direction of the pulley 552 extending into the second guide rail 211 is arranged on the stop block 71. A stop groove 212 for accommodating the stop block 71 and the stop spring 72 and an installation groove 213 communicated with the stop groove 212 are opened on the second guide rail 211. The stop spring 72 has a tendency to drive the stop block 71 to extend out of the stop groove 212. A movable block 214 is slidably arranged in the installation groove 213, and the movable block 214 is connected to the stop block 71.

[0036] Referring to Figure 3 and Figure 4 , through the above settings, when the transmission table 55 is moved into the tank body 21, the stop block 71 can prevent the pulley 552 from rolling out of the tank body 21, thereby fixing the transmission table 55 in the tank body 21, facilitating the subsequent fixing of the tank cover 22 on the tank body 21. When it is necessary to release the limit of the stop block 71 on the pulley 552, just toggle the movable block 214 to make the stop block 71 move into the stop groove 212. When the stop block 71 moves into the stop groove 212, the pulley 552 can roll out of the first guide rail 511, thereby moving the oil-immersed transformer out of the tank body 21.

[0037] Reference Figure 1 The sealing assembly 6 includes a first rotating shaft 61 arranged on the outer wall of the tank body 21, a second rotating shaft 62 arranged on the tank cover 22, a connecting rod 63 connected between the first rotating shaft 61 and the second rotating shaft 62, and a pressing member 64 arranged on the tank body 21, wherein the connecting rod 63 is rotatably connected to the first rotating shaft 61, and the second rotating shaft 62 is rotatably connected to the connecting rod 63.

[0038] Reference Figure 1 With this arrangement, when the first and second rotating shafts 61, 62 rotate, the can lid 22 rotates to a position opposite or offset from the opening of the can body 21. Once the can lid 22 is opposite the opening of the can body 21, the pressing member 64 presses the can lid 22 against the sidewall of the can body 21, sealing the interior of the can body 21 and facilitating subsequent vacuum processing. In this embodiment, sufficient space is left between the transfer rack 51 and the can body 21. Once the transfer platform 55 is fully inserted into the can body 21, the can lid 22 can move between the transfer rack 51 and the can body 21, facilitating rotation of the can lid 22.

[0039] Reference Figure 5 The pressing member 64 includes a pressing rod 641 hingedly mounted on the tank body 21, a stopper 642 connected to the pressing rod 641, and a locking bolt 643 threadedly connected to the stopper 642. The locking bolt 643 is threadedly connected to the tank cover 22 and the tank body 21. With the above arrangement, when the tank cover 22 is moved to a position opposite to the opening of the tank body 21, the pressing rod 641 can be rotated so that the stopper 642 is located on the side of the tank cover 22 away from the tank body 21. The locking bolt 643 is then tightened on the stopper 642, the tank cover 22, and the tank body 21 to press the tank cover 22 against the tank body 21. In this embodiment, the number of pressing members 64 is preferably four, but the specific number can also be selected according to customer needs.

[0040] Reference Figure 1 、 Figure 2 and Figure 3 To reduce the risk of damage to the oil-immersed transformer due to tilting as it moves along the transport platform 55, an anti-fall device 8 is installed on the transport platform 55. This device includes a first spur bevel gear 81 mounted on the shaft of the pulley 552, a positioning screw 82 connected to the shaft of the first spur bevel gear 81, a horizontal positioning plate 83 rotatably connected to the positioning screw 82, a second spur bevel gear 84 rotatably mounted on the transport platform 55, a limiting screw 85 connected to the shaft of the second spur bevel gear 84, and a vertical positioning plate 86 rotatably connected to the limiting screw 85. The rolling of the pulley 552 drives the rotation of the first spur bevel gear 81, eliminating the need for an additional drive source and thus saving energy.

[0041] Refer to Figure 2 , one first straight bevel gear 81 in the anti-toppling device 8 is provided on each of the two relatively arranged pulleys 552, and one second straight bevel gear 84 is provided on each side of each first straight bevel gear 81, that is, there are a total of four second straight bevel gears 84, and the second straight bevel gears 84 are all meshed with the first straight bevel gear 81. The rotation direction of the first straight bevel gear 81 is the same as the rotation direction of the pulley 552, and the rotation direction of the second straight bevel gear 84 is perpendicular to the rotation direction of the pulley 552.

[0042] Refer to Figure 1 and Figure 2 , two positioning lead screws 82, two transverse positioning plates 83, and two vertical positioning plates 86 are provided. The two positioning lead screws 82 are respectively connected to each first straight bevel gear 81, and the two transverse positioning plates 83 are respectively rotatably connected to each positioning lead screw 82. In this embodiment, four limit lead screws 85 are provided and are respectively connected to each second straight bevel gear 84. Two limit lead screws 85 are rotatably connected to each vertical positioning plate 86, and the limit lead screws 85 are arranged on the sides of the two second straight bevel gears 84 away from each other. The transfer table 55 includes a placement plate 553 for placing the oil-immersed transformer. The two transverse positioning plates 83 are respectively arranged on both sides of the placement plate 553, and the two vertical positioning plates 86 are also respectively arranged on both sides of the placement plate 553. The heights of the two transverse positioning plates 83 and the two vertical positioning plates 86 are both greater than the height of the oil-immersed transformer to protect the oil-immersed transformer.

[0043] Refer to Figure 1 , the transfer table 55 is provided with a fixing hole 554 for the transverse positioning plate 83 to pass through and a sliding hole 555 for the vertical positioning plate 86 to pass through. The transverse positioning plate 83 is slidably arranged on the hole wall of the fixing hole 554, and the vertical positioning plate 86 is slidably arranged on the hole wall of the sliding hole 555. When the pulley 552 rolls towards the inside of the tank body 21, the two transverse positioning plates 83 and the two vertical positioning plates 86 both move towards each other, so that the transverse positioning plates 83 and the vertical positioning plates 86 surround the oil-immersed transformer for one week, reducing the possibility of the oil-immersed transformer tilting.

[0044] Refer to Figure 1 , in this embodiment, when the transfer table 55 is completely moved into the tank body 21, the two transverse positioning plates 83 and the two vertical positioning plates 86 both slide to the positions where they are in contact with the oil-immersed transformer to protect the oil-immersed transformer; when the transfer table 55 is moved out of the tank body 21, the two transverse positioning plates 83 and the two vertical positioning plates 86 move away from the oil-immersed transformer to facilitate the removal of the oil-immersed transformer from the transfer table 55.

[0045] The implementation principle of a vacuum drying tank in an embodiment of this application is as follows: When it is necessary to move an oil-immersed transformer into the tank body 21, the forward and reverse motor 54 can be started first, so that the conveyor belt 53 drives the transfer platform 55 to move into the tank body 21, thereby moving the oil-immersed transformer into the tank body 21, which is convenient to operate.

[0046] When the pulley 552 slides in the first guide rail 511 and the second guide rail 211, the pulley 552 will drive the first straight bevel gear 81 to rotate, so that the first straight bevel gear 81 drives the positioning lead screw 82 to rotate, and the positioning lead screw 82 drives the horizontal positioning plate 83 to slide in the fixing hole 554. At the same time, the first straight bevel gear 81 drives the second straight bevel gear 84 to rotate, and the second straight bevel gear 84 drives the limit lead screw 85 to rotate, so that the limit lead screw 85 drives the vertical positioning plate 86 to slide in the sliding hole 555, so that the horizontal positioning plate 83 and the vertical positioning plate 86 move towards the direction close to the oil-immersed transformer to protect the oil-immersed transformer.

[0047] After the oil-immersed transformer is moved into the tank body 21, the stop block 71 will block the side of the pulley 552 close to the first guide rail 511, so that the pulley 552 is not easy to roll out of the tank body 21, improving the stability of the transfer platform 55 relative to the second guide rail 211. When it is necessary to move the oil-immersed transformer out of the tank body 21, just dial the movable block 214 so that the stop block 71 moves into the stop groove 212.

[0048] When the pulley 552 rolls in the direction of moving out of the tank body 21, it will drive the first straight bevel gear 81 and the second straight bevel gear 84 to change the rotation direction, so that the horizontal positioning plate 83 and the vertical positioning plate 86 move away from the oil-immersed transformer, so that the horizontal positioning plate 83 and the vertical positioning plate 86 no longer abut against the oil-immersed transformer, facilitating the removal of the oil-immersed transformer from the transfer platform 55.

[0049] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A vacuum drying tank, comprising a base (1), a tank body assembly (2) arranged on the base (1), a vacuum pump assembly (3) and a heating assembly (4). The tank body assembly (2) includes a tank body (21), a tank cover (22) arranged on the tank body (21) and a sealing ring (23) arranged on the tank body (21), characterized in that: It further includes a transmission component (5), and the transmission component (5) includes a transmission rack (51) arranged outside the tank body (21), two rotating shafts (52) rotatably arranged on the transmission rack (51), a conveyor belt (53) sleeved on the two rotating shafts (52), a forward and reverse motor (54) connected to one of the rotating shafts (52), and a transmission table (55) arranged on the conveyor belt (53). The transmission table (55) is used for placing an oil-immersed transformer. The two ends of the conveyor belt (53) are respectively sleeved on different rotating shafts (52). A first guide rail (511) is arranged on the transmission rack (51), and a second guide rail (211) is arranged inside the tank body (21). A plurality of pulleys (552) are arranged on one side of the transmission table (55) close to the transmission rack (51), and the pulleys (552) are rotatably arranged in the first guide rail (511) and the second guide rail (211).

2. The vacuum drying tank according to claim 1, wherein: A plurality of anti-slip grooves (551) are formed on one side of the transmission table (55) close to the conveyor belt (53), and rotating racks (531) meshing with the anti-slip grooves (551) are arranged on the conveyor belt (53).

3. A vacuum drying tank according to claim 1, characterized in that: An anti-toppling device (8) is arranged on the transmission table (55). The pulleys (552) are oppositely arranged on the transmission table (55). The anti-toppling device (8) includes a first straight-tooth bevel gear (81) arranged on the rotating shaft of the pulley (552), a positioning lead screw (82) connected to the rotating shaft of the first straight-tooth bevel gear (81), and a lateral positioning plate (83) rotatably connected to the positioning lead screw (82). One first straight-tooth bevel gear (81) is arranged on each of the two oppositely arranged pulleys (552). Two positioning lead screws (82) are provided and are respectively connected to each first straight-tooth bevel gear (81). Two lateral positioning plates (83) are provided and are respectively rotatably connected to each positioning lead screw (82). The transmission table (55) includes a placement plate (553) for placing an oil-immersed transformer. The two lateral positioning plates (83) are respectively arranged on both sides of the placement plate (553). The height of the lateral positioning plate (83) is greater than the height of the oil-immersed transformer. Fixing holes (554) for the lateral positioning plates (83) to pass through are formed on the transmission table (55). The lateral positioning plates (83) are slidably arranged on the hole walls of the fixing holes (554). When the pulleys (552) roll into the tank body (21), the two lateral positioning plates (83) move towards each other.

4. A vacuum drying tank according to claim 2, characterized in that: The anti-toppling device (8) further includes a second straight bevel gear (84) rotatably arranged on the transfer table (55), a limit screw rod (85) connected to the rotating shaft of the second straight bevel gear (84), and a vertical positioning plate (86) rotatably connected to the limit screw rod (85). The height of the vertical positioning plate (86) is greater than the height of the oil-immersed transformer. One second straight bevel gear (84) is provided on each side of each first straight bevel gear (81). The second straight bevel gears (84) are all meshed with the first straight bevel gears (81). The rotation direction of the second straight bevel gear (84) is perpendicular to the rotation direction of the pulley (552). The limit screw rod (85) is arranged on the side where the two second straight bevel gears (84) are away from each other. A sliding hole (555) for the vertical positioning plate (86) to pass through is formed on the transfer table (55). The vertical positioning plate (86) is slidably arranged on the hole wall of the sliding hole (555). The two vertical positioning plates (86) are respectively arranged on both sides of the placing plate (553). When the pulley (552) rolls into the tank body (21), the two vertical positioning plates (86) move towards each other.

5. A vacuum drying tank according to claim 1, characterized in that: A fixing component (7) is provided on the side of the second guide rail (211) close to the first guide rail (511). The fixing component (7) includes a stop block (71) and a stop spring (72) arranged on the second guide rail (211). A guiding inclined surface (711) is provided on the stop block (71). The guiding inclined surface (711) inclines towards the direction in which the pulley (552) extends into the second guide rail (211). A stop groove (212) for accommodating the stop block (71) and the stop spring (72) and an installation groove (213) communicated with the stop groove (212) are formed on the second guide rail (211). The stop spring (72) has a tendency to drive the stop block (71) to extend out of the stop groove (212). A movable block (214) is slidably arranged in the installation groove (213). The movable block (214) is connected to the stop block (71).

6. A vacuum drying tank according to claim 1, characterized in that: A sealing component (6) for moving the tank cover (22) to a position opposite to the opening of the tank body (21) is provided on the tank body (21). The sealing component (6) includes a first rotating shaft (61) arranged on the outer wall of the tank body (21), a second rotating shaft (62) arranged on the tank cover (22), a connecting rod (63) connected between the first rotating shaft (61) and the second rotating shaft (62), and a pressing member (64) arranged on the tank body ( 7. A vacuum drying tank according to claim 6, characterized in that: The pressing member (64) includes a pressing rod (641) hinged to the tank body (21), a limiting block (642) connected to the pressing rod (641), and a locking bolt (643) threadedly connected to the limiting block (642). The locking bolt (643) is threadedly connected to the tank cover (22) and the tank body (21).

8. A vacuum drying tank according to claim 6, characterized in that: A handle (24) is provided on one side of the tank cover (22) away from the tank body (21).

Images