A swing-out tail gas extraction device for a rare earth electrolytic furnace

Abstract

The utility model discloses a kind of tail gas extraction devices of swing of rare earth electrolytic furnace, including pedestal main body, pedestal main body is rotationally provided with suction device and pull rod assembly, suction device includes tube body, first cover body connected in the end of tube body, swing frame is rotationally connected on tube body by first pin shaft, pull rod assembly one end is rotationally connected in pedestal main body, pull rod assembly other end is rotationally connected on swing frame by second pin shaft, and second cover body is fixed on swing frame, and first cover body and second cover body are spliced to form the suction passage of intercommunication tube body;It also includes driving device, driving device drives tube body to drive pull rod assembly relative pedestal main body swing, so that first cover body and second cover body relative pedestal main body swing between use state and avoidance state. Second cover body can swing relative first cover body to realize opening and closing, realize the effect of effective avoidance to negative plate.

Description

Technical Field

[0001] This utility model relates to the field of rare earth electrolysis furnace tail gas collection technology, and in particular to a rotary tail gas extraction device for a rare earth electrolysis furnace. Background Technology

[0002] Chinese Patent CN206837689U discloses a dust removal and fume extraction device for metal smelting, including a suction hood positioned above the smelting furnace; a rotating disk connected to the suction hood via a connecting pipe, the connecting pipe being rotatable relative to the smelting furnace via the rotating disk; a stainless steel perforated plate inside the connecting pipe; a transmission pipe connected to a pulse-jet bag filter; and the filter bag outlet of the pulse-jet bag filter located in a collection tank.

[0003] However, the above-mentioned dust removal and smoke exhaust device has the following drawbacks: the connecting pipe of the smoke exhaust device is connected to the end of the transmission pipe by rotating the rotating disk. In the field of rare earth electrolysis, tungsten rods are placed in the smelting furnace, and a negative electrode plate is set above the smelting furnace to connect the tungsten rods, so that the tungsten rods can be used as cathodes to electrolyze rare earth metals. However, the above-mentioned device can only rotate horizontally left and right, which will interfere with the negative electrode plate set on the side of the suction hood, making it inconvenient to remove the tungsten rods. It urgently needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a tilting exhaust gas device for a rare earth electrolysis furnace, which has a second cover that can be tilted relative to the first cover to open and close, thereby achieving effective avoidance of the negative electrode plate.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a rotating tail gas extraction device for a rare earth electrolysis furnace, comprising a base body, an extraction device and a pull rod assembly rotatably mounted on the base body, the extraction device comprising a pipe body and a first cover connected to the end of the pipe body, a swing frame rotatably connected to the pipe body via a first pin, one end of the pull rod assembly rotatably connected to the base body, the other end of the pull rod assembly rotatably connected to the swing frame via a second pin, and a second cover fixedly mounted on the swing frame, the first cover and the second cover being joined together to form an extraction channel communicating with the pipe body;

[0006] It also includes a driving device, which drives the tube body to rotate relative to the base body, so that the first cover and the second cover rotate relative to the base body between the use state and the avoidance state. When the pull rod assembly rotates relative to the base body, the pull rod assembly cooperates with the swing frame to drive the second cover to switch between the open state and the closed state relative to the first cover.

[0007] By adopting the above technical solution, the first and second covers are combined to form an exhaust channel during use. The exhaust gas generated by the electrolytic furnace is led to the tube body through the exhaust channel. When it is necessary to remove the negative electrode plate from the electrolytic furnace, the driving device drives the tube body to tilt upward relative to the base body. The tube body drives the pull rod assembly to lift upward at the same time, thereby lifting the first and second covers upward. During the lifting process, since the first cover is fixedly connected to the end of the tube body, the pull rod assembly pulls the swing frame to rotate along the first pin shaft through the second pin shaft, thereby driving the second cover to tilt downward around the first pin shaft. This causes the second cover to tilt from the combined state to the open state relative to the first cover, effectively avoiding the negative electrode plate and facilitating the removal of the negative electrode plate from the electrolytic furnace. The second cover can tilt relative to the first cover to open and close, achieving the effect of effectively avoiding the negative electrode plate.

[0008] A further feature of this invention is that the pull rod assembly includes a sleeve and a support rod, one end of the sleeve is fixedly connected to the end of the support rod, the other end of the sleeve is rotatably connected to the base body via a pivot, and the end of the support rod away from the sleeve is rotatably connected to the swing frame via a second pin.

[0009] By adopting the above technical solution, when the driving device drives the tube body to tilt, the tube body drives the support rod and the sleeve to lift synchronously through the swing frame. The sleeve and the support rod simultaneously give the swing frame a reverse pulling force, so that the swing frame tilts downward relative to the tube body along the first pin shaft, thereby achieving the purpose of tilting the second cover body downward.

[0010] A further feature of this invention is that the base body is provided with a hinge shaft, and the side wall of the tube is fixed with a rotating connecting seat. The rotating connecting seat is rotatably connected to the base body through the hinge shaft. The first pin, the second pin, the rotating shaft, and the hinge shaft together with the tube body and the tie rod assembly form a parallelogram linkage mechanism.

[0011] By adopting the above technical solution, when the driving device drives the tube to lift and rotate, the parallelogram linkage mechanism enables the swing frame to achieve a stable downward swinging motion with the first pin as the rotation center.

[0012] A further feature of this invention is that a locking adjustment structure is provided between the support rod and the sleeve, the locking adjustment structure being used to adjust the extension length of the support rod relative to the sleeve.

[0013] By adopting the above technical solution, the overall adjustment of the tie rod assembly can be achieved to find the optimal stroke for the tie rod assembly to pull the swing frame downward, and to prevent the tie rod assembly from being too short, which would cause the second cover to collide and interfere with the tie rod assembly when it tilts downward.

[0014] A further feature of this invention is that the locking adjustment structure includes a waist-shaped hole, a threaded hole, and a bolt. The waist-shaped hole is formed through the side wall of the sleeve, the threaded hole is formed in the side wall of the support rod, and the bolt is threadedly connected to the threaded hole through the waist-shaped hole.

[0015] By adopting the above technical solution, the length of the support rod extending out of the sleeve can be adjusted by adjusting the relative position of the bolt in the waist-shaped hole.

[0016] A further feature of this invention is that: a mounting seat is provided on the side wall of the pipe body, the first pin is provided on the mounting seat, and the mounting seat and the pipe body are fixedly connected by several clamps.

[0017] By adopting the above technical solution, a detachable connection between the tube body and the tie rod assembly is achieved, which facilitates subsequent cleaning or replacement of parts.

[0018] A further feature of this invention is that the side wall of the tube body is provided with a mounting portion, the mounting portion is located on the side of the hinge shaft away from the first cover body, and the power output end of the driving device is connected to the mounting portion.

[0019] By adopting the above technical solution, when the driving device pulls the mounting part of the tube side wall, the end of the tube near the first cover tilts upward with the hinge axis as the center.

[0020] A further feature of this invention is that the driving device is an electric cylinder, and the piston rod end of the electric cylinder is hinged to the mounting portion.

[0021] By adopting the above technical solutions, the electric cylinder has a fast dynamic effect and precise force control, enabling precise control over the tilting of the tube.

[0022] A further feature of this invention is that the base body includes a mounting frame, and the mounting frame has an avoidance groove corresponding to the pull rod assembly, and the mounting frame avoids and cooperates with the pull rod assembly through the avoidance groove.

[0023] A further feature of this invention is that a sealing ring is provided on the end face of the tube body away from the first cover body.

[0024] By adopting the above technical solution, when the driving device drives the tube body to reset to the working state, the end of the tube body away from the first cover body can be tightly fitted with the corresponding connecting pipe through the sealing ring, thereby improving the connection sealing performance of the tube body end.

[0025] In summary, this utility model has the following beneficial effects:

[0026] The system employs a suction device and a pull rod assembly rotatably mounted on the base body. The suction device includes a pipe body and a first cover. A swing frame is rotatably connected to the pipe body via a first pin. One end of the pull rod assembly is rotatably connected to the base body, and the other end is rotatably connected to the swing frame via a second pin. A second cover is fixed to the swing frame. A drive device output end is also connected to the pipe body. In use, the first and second covers are joined together to form a suction channel. The exhaust gas generated by the electrolytic furnace is guided to the pipe body through the suction channel. When it is necessary to remove the negative electrode plate from the electrolytic furnace, the drive device drives the pipe body relative to the base body. The tube body tilts upwards and lifts, causing the pull rod assembly to lift upwards simultaneously. This lifts both the first and second covers. During the lifting process, since the first cover is fixedly connected to the end of the tube body, the pull rod assembly pulls the swing frame along the first pin shaft via the second pin shaft, causing the second cover to tilt downwards around the first pin shaft. This allows the second cover to tilt relative to the first cover from a closed state to an open state, effectively avoiding the negative electrode plate and facilitating its removal from the electrolysis furnace. The second cover can tilt relative to the first cover to open and close, achieving the effect of effectively avoiding the negative electrode plate. Attached Figure Description

[0027] Figure 1 This is an overall structural diagram of the present invention, in which the first cover is in a spliced ​​state relative to the second cover.

[0028] Figure 2 This is an overall structural diagram of the present invention, in which the first cover is in an open state relative to the second cover.

[0029] Figure 3 This is a utility model Figure 2 A magnified view of a portion of region A in the middle.

[0030] Figure 4 This is a utility model Figure 1 A longitudinal sectional view.

[0031] Figure 5 This is a utility model Figure 4 A magnified view of a portion of region B in the middle.

[0032] Figure 6 This is a utility model Figure 4 A magnified view of a portion of region C.

[0033] In the diagram: 1. Base body; 11. Rotating shaft; 12. Hinge shaft; 13. Mounting frame; 131. Clearance groove; 2. Air extraction device; 20. Air extraction channel; 21. Pipe body; 211. Mounting seat; 2111. First pin; 212. Rotary connecting seat; 213. Clamp; 214. Mounting part; 215. Sealing ring; 22. First cover; 3. Tie rod assembly; 31. Sleeve; 311. Waist-shaped hole; 32. Support rod; 321. Threaded hole; 33. Bolt; 4. Swing frame; 41. Second cover; 42. Second pin; 5. Drive device. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] A rotary exhaust gas extraction device for a rare earth electrolysis furnace, such as Figures 1-5 As shown, the device includes a base body 1, on which an air extraction device 2 and a pull rod assembly 3 are rotatably mounted. The air extraction device 2 includes a pipe body 21 and a first cover 22 connected to the end of the pipe body 21. The end of the pipe body 21 away from the first cover 22 is connected to a vacuum generator via a connecting pipe. A swing frame 4 is rotatably connected to the pipe body 21 via a first pin 2111. One end of the pull rod assembly 3 is rotatably connected to the base body 1, and the other end of the pull rod assembly 3 is rotatably connected to the swing frame 4 via a second pin 42. A second cover 41 is fixed on the swing frame 4. The first cover 22 and the second cover 41 are combined to form an air extraction channel 20 connecting the pipe body 21. The device also includes a driving device 5, which drives the pipe body 21 to rotate relative to the base body 1, causing the first cover 21 to rotate. The second cover 41 rotates between the use state and the avoidance state relative to the base body 1. When the pull rod assembly 3 rotates relative to the base body 1, the pull rod assembly 3 cooperates with the swing frame 4 to drive the second cover 41 to switch between the open state and the closed state relative to the first cover 22. The base body 1 includes a mounting frame 13, and the mounting frame 13 is provided with an avoidance groove 131 corresponding to the pull rod assembly 3. The mounting frame 13 avoids and cooperates with the pull rod assembly 3 through the avoidance groove 131. The end face of the tube 21 away from the first cover 22 is provided with a sealing ring 215. When the driving device 5 drives the tube 21 to return to the use state, the end of the tube 21 away from the first cover 22 can be tightly fitted with the corresponding connecting pipe through the sealing ring 215, thereby improving the connection sealing of the end of the tube 21.

[0036] like Figures 2-6As shown, the pull rod assembly 3 includes a sleeve 31 and a support rod 32. One end of the sleeve 31 is fixedly connected to the end of the support rod 32, and the other end of the sleeve 31 is rotatably connected to the base body 1 via a rotating shaft 11. The end of the support rod 32 away from the sleeve 31 is rotatably connected to the swing frame 4 via a second pin 42. When the drive device 5 drives the tube body 21 to rotate, the tube body 21 drives the support rod 32 and the sleeve 31 to lift synchronously via the swing frame 4. The sleeve 31 and the support rod 32 simultaneously provide a reverse pulling force to the swing frame 4, thereby causing the swing frame 4 to move relative to the tube body 21 along the first pin 2111. The second cover 41 is tilted downwards, thus achieving the purpose of tilting downwards. The base body 1 is provided with a hinge shaft 12, and the side wall of the tube 21 is fixed with a rotating connecting seat 212. The rotating connecting seat 212 is rotatably connected to the base body 1 through the hinge shaft 12. The first pin 2111, the second pin 42, the rotating shaft 11, and the hinge shaft 12 together with the mounting frame 13, the swing frame 4, the tube 21, and the tie rod assembly 3 form a parallelogram linkage mechanism. When the driving device 5 drives the tube 21 to tilt upwards, the parallelogram linkage mechanism allows the swing frame 4 to tilt downwards via the first pin 211. 1. To achieve stable downward swinging motion at the rotation center; a locking adjustment structure is provided between the support rod 32 and the sleeve 31. The locking adjustment structure is used to adjust the extension length of the support rod 32 relative to the sleeve 31, which can realize the overall adjustment of the tie rod assembly 3, so as to find the optimal stroke for the tie rod assembly 3 to pull the swing frame 4 downward, and prevent the overall length of the tie rod assembly 3 from being too short, causing the second cover 41 to collide and interfere with the tie rod assembly 3 when it tilts downward; the locking adjustment structure includes a waist-shaped hole 311, a threaded hole 321, and a bolt 33. The waist-shaped hole 311 is opened through the side wall of the sleeve 31. A threaded hole 321 is formed on the side wall of the support rod 32. The bolt 33 is threadedly connected to the threaded hole 321 through the waist-shaped hole 311. By adjusting the relative position of the bolt 33 in the waist-shaped hole 311, the length of the support rod 32 extending out of the sleeve 31 can be adjusted. The side wall of the tube body 21 is provided with a mounting seat 211. The first pin 2111 is set on the mounting seat 211. The mounting seat 211 and the tube body 21, and the rotating connecting seat 212 and the tube body 21 are fixedly connected by several clamps 213, so as to realize the detachable connection between the tube body 21 and the tie rod assembly 3, which facilitates subsequent cleaning or replacement of parts.

[0037] like Figures 1-4 As shown, the side wall of the tube 21 is provided with a mounting part 214. The mounting part 214 is located on the side of the hinge shaft 12 away from the first cover 22. The power output end of the drive device 5 is connected to the mounting part 214. When the drive device 5 pulls the mounting part 214 on the side wall of the tube 21, the end of the tube 21 near the first cover 22 tilts upward with the hinge shaft 12 as the center. The drive device 5 is an electric cylinder. The piston rod end of the electric cylinder is hinged to the mounting part 214. The electric cylinder has a fast dynamic effect and precise force control, which can achieve precise control of the tilting of the tube 21.

[0038] The basic working principle of this utility model is as follows: An air extraction device 2 and a pull rod assembly 3 are rotatably mounted on the base body 1. The air extraction device 2 includes a pipe body 21 and a first cover 22. One end of the pipe body 21 is rotatably mounted on the mounting frame 13 of the base body 1 via a hinge shaft 12, and the other end of the pipe body 21 is rotatably connected to a swing frame 4 via a first pin 2111. One end of the pull rod assembly 3 is rotatably connected to the mounting frame 13 via a rotating shaft 11, and the other end of the pull rod assembly 3 is rotatably connected to the swing frame 4 via a second pin 42. A second cover 41 is fixed on the side of the swing frame 4 facing the first cover 22. The first pin 2111, the second pin 42, the rotating shaft 11, the hinge shaft 12, the mounting frame 13, the swing frame 4, the pipe body 21, and the pull rod assembly 3 together form a parallelogram linkage mechanism. A driving device 5 is also provided. The output end of the driving device 5 is connected to the pipe body 21. When in use, the first cover 22 and the second cover 41 are connected to the first cover 22. The covers 41 are assembled to form an exhaust channel 20. The exhaust gas generated by the electrolytic furnace is led to the tube 21 through the exhaust channel 20. When it is necessary to remove the negative electrode plate from the electrolytic furnace, the drive device 5 drives the tube 21 to tilt upward relative to the base body 1. The tube 21 drives the pull rod assembly 3 to lift upward at the same time, thereby lifting the first cover 22 and the second cover 41 upward. During the lifting process, since the first cover 22 is fixedly connected to the end of the tube 21, the pull rod assembly 3 pulls the swing frame 4 to rotate along the first pin 2111 through the second pin 42, thereby driving the second cover 41 to tilt downward around the first pin 2111. This causes the second cover 41 to tilt from the assembled state to the open state relative to the first cover 22, effectively avoiding the negative electrode plate and facilitating the removal of the negative electrode plate from the electrolytic furnace. The second cover can tilt relative to the first cover to open and close, achieving the effect of effectively avoiding the negative electrode plate.

[0039] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A rotary tail gas extraction device for a rare earth electrolysis furnace, comprising a base body (1), characterized in that: The base body (1) is rotatably provided with an air extraction device (2) and a pull rod assembly (3). The air extraction device (2) includes a tube body (21) and a first cover (22) connected to the end of the tube body (21). A swing frame (4) is rotatably connected to the tube body (21) through a first pin (2111). One end of the pull rod assembly (3) is rotatably connected to the base body (1), and the other end of the pull rod assembly (3) is rotatably connected to the swing frame (4) through a second pin (42). A second cover (41) is fixed on the swing frame (4). The first cover (22) and the second cover (41) are combined to form an air extraction channel (20) that connects the tube body (21). It also includes a drive device (5), which drives the tube body (21) to rotate the pull rod assembly (3) relative to the base body (1), so that the first cover (22) and the second cover (41) rotate relative to the base body (1) between the use state and the avoidance state. When the pull rod assembly (3) rotates relative to the base body (1), the pull rod assembly (3) cooperates with the swing frame (4) to drive the second cover (41) relative to the first cover (22) to switch between the open state and the assembled state.

2. The rotary tail gas extraction device for a rare earth electrolysis furnace according to claim 1, characterized in that: The pull rod assembly (3) includes a sleeve (31) and a support rod (32). One end of the sleeve (31) is fixedly connected to the end of the support rod (32), and the other end of the sleeve (31) is rotatably connected to the base body (1) via a pivot (11). The end of the support rod (32) away from the sleeve (31) is rotatably connected to the swing frame (4) via a second pin (42).

3. The rotary tail gas extraction device for a rare earth electrolysis furnace according to claim 2, characterized in that: The base body (1) is provided with a hinge shaft (12), and the side wall of the tube body (21) is fixed with a rotating connecting seat (212). The rotating connecting seat (212) is rotatably connected to the base body (1) through the hinge shaft (12). The first pin (2111), the second pin (42), the rotating shaft (11) and the hinge shaft (12) together with the tube body (21) and the tie rod assembly (3) form a parallelogram linkage mechanism.

4. The rotary tail gas extraction device for a rare earth electrolysis furnace according to claim 2, characterized in that: A locking adjustment structure is provided between the support rod (32) and the sleeve (31), and the locking adjustment structure is used to adjust the extension length of the support rod (32) relative to the sleeve (31).

5. The rotary tail gas extraction device for a rare earth electrolysis furnace according to claim 4, characterized in that: The locking adjustment structure includes a waist-shaped hole (311), a threaded hole (321), and a bolt (33). The waist-shaped hole (311) is opened through the side wall of the sleeve (31), the threaded hole (321) is opened in the side wall of the support rod (32), and the bolt (33) is threadedly connected to the threaded hole (321) through the waist-shaped hole (311).

6. The rotary tail gas extraction device for a rare earth electrolysis furnace according to claim 3, characterized in that: The side wall of the tube body (21) is provided with a mounting seat (211), the first pin (2111) is provided on the mounting seat (211), and the mounting seat (211) and the tube body (21) are fixedly connected by several clamps (213).

7. The rotary tail gas extraction device for a rare earth electrolysis furnace according to claim 3, characterized in that: The tube body (21) has a mounting part (214) on its side wall. The mounting part (214) is located on the side of the hinge shaft (12) away from the first cover (22). The power output end of the drive device (5) is connected to the mounting part (214).

8. The rotary tail gas extraction device for a rare earth electrolysis furnace according to claim 7, characterized in that: The driving device (5) is an electric cylinder, and the end of the piston rod of the electric cylinder is hinged to the mounting part (214).

9. The rotary tail gas extraction device for a rare earth electrolysis furnace according to claim 1, characterized in that: The base body (1) includes a mounting frame (13), and the mounting frame (13) has an avoidance groove (131) corresponding to the pull rod assembly (3). The mounting frame (13) avoids and cooperates with the pull rod assembly (3) through the avoidance groove (131).

10. The rotary tail gas extraction device for a rare earth electrolysis furnace according to claim 1, characterized in that: A sealing ring (215) is provided on the end face of the tube (21) away from the first cover (22).

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