A tower mill

Abstract

The application belongs to the technical field of tower mill, and particularly relates to a tower mill, which comprises a transmission cylinder, a cylinder body and a stirring shaft, the transmission cylinder is fixedly connected with the cylinder body, and the cylinder body is provided with an access door; a driving assembly is arranged between the cylinder body and the access door, the access door is driven to move forward and backward by the driving assembly to realize opening and closing; a lining plate is arranged on the stirring shaft; a supporting arm is fixedly connected to the access door, the stirring shaft is rotatably connected with the supporting arm, and the upper end of the stirring shaft is connected with a transmission shaft through a transmission assembly; a ball adding pipe is fixedly connected to the transmission cylinder, and a ball discharging hole is arranged on the supporting plate. The access door is opened and closed by moving forward and backward, the side edges of the arch-shaped structure on the access door are perpendicular to the access door, the gap with the cylinder body is reduced, and the internal space of the cylinder body is a more complete cylinder. The stirring shaft is connected with the access door through the supporting arm, and is moved out of the cylinder body when the access door is opened, so that the lining plate on the stirring shaft is conveniently replaced outside, and the internal space of the cylinder body is released, facilitating replacement of the grid lining plate.

Description

Technical Field

[0001] This invention belongs to the field of tower mill technology, and specifically relates to a tower mill. Background Technology

[0002] Tower mills, widely used in mining, metallurgy, and chemical industries, consist of a core structure including a drive cylinder, a cylinder body, and a stirring shaft. The stirring shaft drives grinding balls to grind materials. Traditional tower mills have several shortcomings in design and maintenance. First, the access door typically uses a hinged opening mechanism. To ensure smooth rotation, the sides of its arched structure are often designed to slope inwards. This results in a large gap between the access door and the cylinder body when closed, disrupting the integrity of the internal space and creating a non-cylindrical structure. This affects material flow and grinding efficiency, and also easily leads to leakage of grinding balls and materials. Second, the liners, as consumable parts, require regular replacement. However, in existing equipment, the stirring shaft is fixedly installed. When replacing the liners, operators must enter the cylinder body, creating a confined and dangerous working environment with low efficiency. In particular, the spiral liners on the stirring shaft require precise installation angles, making the replacement process cumbersome.

[0003] Meanwhile, the power transmission system of existing tower mills often uses rigid connections, which cannot automatically cut off the power when overloaded, and there are specific requirements for the stopping angle of the stirring shaft during maintenance, which increases the difficulty of maintenance. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention provides a tower mill that allows the stirring shaft to be moved out for easy replacement of the liner and avoids equipment overload.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A tower mill includes a transmission cylinder, a cylinder body, and a stirring shaft. The transmission cylinder is fixedly connected to the cylinder body, and the cylinder body is provided with a maintenance door. A drive assembly is provided between the cylinder body and the maintenance door, and the maintenance door is opened and closed by driving the drive assembly to move back and forth. A support plate is fixedly connected inside the transmission cylinder, and the support plate is rotatably connected to the transmission shaft. A drive motor connected to the transmission shaft is provided on the transmission cylinder.

[0007] A liner is provided on the stirring shaft; a support arm is fixedly connected to the inspection door, the stirring shaft is rotatably connected to the support arm, and the upper end of the stirring shaft is connected to the transmission shaft through a transmission assembly; a ball-filling tube is fixedly connected to the transmission cylinder, and a ball-discharging hole is provided on the support plate, with the ball-filling tube communicating with the ball-discharging hole; a sealing plate is slidably connected to the support plate, and a drive cylinder is fixedly connected to the transmission cylinder, with the piston rod of the drive cylinder passing through the transmission cylinder and fixedly connected to the sealing plate, thereby driving the sealing plate to move and block the ball-discharging hole or expose the ball-discharging hole through the drive cylinder;

[0008] The transmission assembly includes a movable sleeve and a connecting ring. The connecting ring is rotatably connected to the movable sleeve, and the movable sleeve is slidably connected to the support plate via a guide rod. A return spring is sleeved on the guide rod. The connecting ring is coaxially arranged with the transmission shaft. A crossbar is fixedly connected to the connecting ring, and both the transmission shaft and the stirring shaft are provided with corresponding transverse grooves. A guide inclined plate is fixedly connected to the sealing plate, and a connecting shaft that cooperates with the guide inclined plate is fixedly connected to the guide rod.

[0009] The inspection door is bolted to the cylinder body; the drive assembly includes at least two drive cylinders, with each drive cylinder having its two ends fixedly connected to the cylinder body and the inspection door, respectively.

[0010] The support arm includes an upper cantilever and a lower support arm; the two ends of the stirring shaft are rotatably connected to the upper cantilever and the lower support arm respectively; an extension arm is fixedly connected to the upper cantilever; a connecting seat is fixedly connected inside the cylinder to support the end of the extension arm.

[0011] It also includes a maintenance assembly, which includes a railcar, a rail, and a turntable; the railcar is rotatably connected to rail wheels that cooperate with the rail; the turntable is mounted on the railcar, and a top rod that cooperates with the stirring shaft is slidably connected to the turntable; the top rod is connected to a lifting mechanism.

[0012] The lifting assembly includes a lifting plate, a lifting cylinder, and a lifting seat. The lifting plate is fixedly connected to the railcar, the lifting seat is rotatably connected to the lifting rod, and the two ends of the lifting cylinder are fixedly connected to the lifting plate and the lifting seat, respectively.

[0013] The railcar is slidably connected to a sliding platform, and a telescopic cylinder is provided between the sliding platform and the railcar; a support column is fixedly connected to the sliding platform, and a crossbeam is provided on the support column; a winch is provided on the crossbeam.

[0014] A support ring is slidably connected to the support column; a limit plate is hinged to the support ring, and an angle adjustment cylinder is provided between the limit plate and the support ring; a lifting mechanism is provided between the support ring and the support column; and a clamping assembly is provided on the limit plate.

[0015] The clamping assembly includes a support cylinder and a corner cylinder; there are two support cylinders, which are respectively located at both ends of the limiting plate; the corner cylinder is located in the middle of the limiting plate.

[0016] The pressure block of the angle cylinder is connected to a pressure shaft via a connecting assembly, and the pressure shaft is provided with an anti-slip sleeve; the connecting assembly includes at least two adjusting bolts, which are threadedly connected to the pressure block, and the ends of the adjusting bolts are rotatably connected to the pressure shaft.

[0017] Compared with the prior art, the beneficial effects of this invention are:

[0018] The inspection door uses a back-and-forth sliding opening and closing mechanism. The arched structure on the side of the inspection door is perpendicular to the door itself, reducing the gap with the cylinder and making the internal space of the cylinder more complete. The stirring shaft is connected to the inspection door via a support arm and moves out of the cylinder along with the door when it is opened. This facilitates the replacement of the liner on the stirring shaft from the outside, while simultaneously freeing up internal space in the cylinder for easy replacement of the grid liner.

[0019] The ball-filling pipe connects to the ball-discharging hole on the support plate. Ball filling is controlled by a sealing plate and a drive cylinder. When the equipment is overloaded, the drive cylinder automatically retracts to seal the ball-discharging hole, stopping ball filling and preventing equipment damage. The transmission assembly is equipped with a return spring and a crossbar structure, which can cut off power transmission in case of overload. Furthermore, there are no requirements on the stopping angle of the stirring shaft during maintenance, simplifying maintenance operations.

[0020] The maintenance components, including a railcar, turntable, lifting mechanism, and clamping assembly, enable mechanized replacement of the liner plates. By adjusting the angle and position of the liner plates, the installation process of the spiral liner plates is simplified. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0024] Figure 4 This is a cross-sectional view of some components of the present invention;

[0025] Figure 5 yes Figure 4 A magnified view of a section at point C;

[0026] Figure 6 This is a schematic diagram of the structure of the transmission cylinder of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the cylindrical body of the present invention;

[0028] Figure 8 yes Figure 7 A cross-sectional view of the structure shown;

[0029] Figure 9 This is a schematic diagram showing the usage status of the maintenance component of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of some components of the maintenance component of the present invention;

[0031] Figure 11 yes Figure 10A schematic diagram of the structure from another direction shown;

[0032] Wherein: 1 is the transmission cylinder, 2 is the cylinder body, 3 is the stirring shaft, 4 is the inspection door, 40 is the arched structure, 5 is the drive assembly, 6 is the support plate, 7 is the transmission shaft, 8 is the drive motor, 9 is the liner plate, 10 is the support arm, 100 is the upper cantilever, 101 is the lower support arm, 102 is the extension arm, 11 is the transmission assembly, 110 is the moving sleeve, 112 is the connecting ring, 113 is the guide rod, 114 is the return spring, 115 is the crossbar, 116 is the transverse groove, 117 is the guide inclined plate, 118 is the connecting shaft, 12 is the ball filling tube, 13 is the ball discharge hole, and 14 is the sealing... 15 is the drive cylinder, 16 is the connecting seat, 17 is the maintenance component, 170 is the railcar, 171 is the rail, 172 is the rotary table, 173 is the top rod, 18 is the lifting mechanism, 180 is the lifting plate, 181 is the lifting cylinder, 182 is the lifting seat, 19 is the support column, 20 is the crossbeam, 21 is the winch, 22 is the support ring, 23 is the limit plate, 24 is the angle adjustment cylinder, 25 is the lifting mechanism, 26 is the support cylinder, 27 is the angle cylinder, 28 is the clamping shaft, 29 is the clamping sleeve, 30 is the adjusting bolt, 31 is the sliding table, and 32 is the telescopic cylinder. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] like Figures 1 to 11 As shown, a tower mill includes a transmission cylinder 1, a cylinder body 2, and a stirring shaft 3. The transmission cylinder 1 is fixedly connected to the cylinder body 2, and the cylinder body 2 is provided with an inspection door 4. A drive assembly 5 is provided between the cylinder body 2 and the inspection door 4, and the inspection door 4 is opened and closed by moving back and forth through the drive assembly 5. The inspection door 4 adopts a back-and-forth moving opening and closing method. The side of the arched structure 40 on the inspection door 4 is perpendicular to the inspection door 4. Compared with the existing hinged opening and closing method (in order to ensure opening and closing, the side of the arched structure 40 is inclined inward), the gap between the arched structure 40 on the inspection door 4 and the cylinder body 2 is smaller, and the internal space of the cylinder body 2 is a more complete cylindrical shape.

[0035] A support plate 6 is fixedly connected inside the transmission cylinder 1. A transmission shaft 7 is rotatably connected to the support plate 6. A drive motor 8 (gear motor) connected to the transmission shaft 7 is mounted on the transmission cylinder 1. The housing of the drive motor 8 is fixedly connected to the transmission cylinder 1, and the output shaft of the drive motor 8 is connected to the transmission shaft 7 via a coupling. A liner 9 is mounted on the stirring shaft 3, and the liner 9 is bolted to the stirring shaft 3. When the liner 9 wears out, it is replaced by removing the bolts. Multiple liners 9 are provided, and after being installed on the stirring shaft 3, they form a spiral shape.

[0036] A support arm 10 is fixedly connected to the inspection door 4, and the stirring shaft 3 is rotatably connected to the support arm 10. When the inspection door 4 is moved outward and opened, the stirring shaft 3 will be moved out along with it through the support arm 10, thus facilitating the replacement of the liner 9 on the stirring shaft 3 from the outside. At the same time, since the stirring shaft 3 is moved out, there is more space inside the cylinder 2, which makes it easier to replace the grid liner 9 inside the cylinder 2.

[0037] A ball-feeding tube 12 is fixedly connected to the transmission cylinder 1, and a ball-discharging hole 13 is provided on the support plate 6. The ball-feeding tube 12 communicates with the ball-discharging hole 13. Grinding balls are discharged into the cylinder 2 sequentially through the ball-feeding tube 12 and the ball-discharging hole 13, thus achieving ball feeding. A sealing plate 14 is slidably connected to the support plate 6, and a drive cylinder 15 is fixedly connected to the transmission cylinder 1. The cylinder body of the drive cylinder 15 is fixedly connected to the transmission cylinder 1. The piston rod of the drive cylinder 15 passes through the transmission cylinder 1 and is fixedly connected to the sealing plate 14. When the piston rod of the drive cylinder 15 extends or retracts, it can drive the sealing plate 14 to move, thereby sealing or allowing the ball-discharging hole 13 to be exposed.

[0038] When adding balls, the piston rod of the drive cylinder 15 extends and pushes the sealing plate 14 away from the ball-filling hole 13, exposing the ball-filling hole 13. When the equipment is overloaded (ball adding needs to be stopped), the piston rod of the drive cylinder 15 retracts and pulls the sealing plate 14 towards the ball-filling hole 13, blocking the ball-filling hole 13 (stopping ball adding).

[0039] The upper end of the stirring shaft 3 is connected to the transmission shaft 7 via a transmission assembly 11. The transmission assembly 11 includes a movable sleeve 110 and a connecting ring 112. The connecting ring 112 is rotatably connected to the movable sleeve 110. The movable sleeve 110 is slidably connected to the support plate 6 via a guide rod 113. A return spring 114 is sleeved on the guide rod 113, and both ends of the return spring 114 are fixedly connected to the guide rod 113 and the support plate 6, respectively. When the movable sleeve 110 moves up and down, it will cause the connecting ring 112 to move as well. When the movable sleeve 110 moves down, the return spring 114 will be compressed.

[0040] The connecting ring 112 is coaxially arranged with the drive shaft 7; a crossbar 115 is fixedly connected to the connecting ring 112, and both the drive shaft 7 and the stirring shaft 3 are provided with corresponding transverse grooves 116. After the moving sleeve 110 moves down, the crossbar 115 will move between the drive shaft 7 and the stirring shaft 3, that is, the crossbar 115 is connected to both transverse grooves 116; at this time, when the drive shaft 7 rotates, it will drive the moving sleeve 110, the crossbar 115 and the stirring shaft 3 to rotate together. When the equipment is overloaded or the liner 9 needs to be replaced, the elastic potential energy is released by the return spring 114 to push the moving sleeve 110, the connecting ring 112 and the crossbar 115 upward, so that the crossbar 115 moves out of the transverse groove 116 of the stirring shaft 3, thereby cutting off the power.

[0041] The structure of the connecting assembly can cut off the power transmission as needed, and the crossbar 115 moves out of the transverse groove 116 of the stirring shaft 3; therefore, the horizontal movement of the stirring shaft 3 will not be hindered during maintenance, that is, there is no requirement for the stopping angle of the stirring shaft 3.

[0042] The movable sleeve 110 moves downwards through the following structure: a guide ramp 117 is fixedly connected to the sealing plate 14, and a connecting shaft 118 that mates with the guide ramp 117 is fixedly connected to the guide rod 113. When the piston rod of the drive cylinder 15 extends and pushes the sealing plate 14 away from the ball discharge hole 13, the inclined surface of the guide ramp 117 gradually contacts the connecting shaft 118, pushing the movable sleeve 110 downwards. When the equipment is overloaded, the piston rod of the drive cylinder 15 retracts, pulling the sealing plate 14 and the guide ramp 117 away from the connecting shaft 118. The return spring 114 releases its elastic potential energy, pushing the movable sleeve 110, the connecting ring 112, and the crossbar 115 upwards, while the sealing plate 14 blocks the ball discharge hole 13. Thus, the above structural arrangement can cut off power transmission and ball loading.

[0043] Furthermore, the inspection door 4 is bolted to the cylinder 2, and the bolts between the inspection door 4 and the cylinder 2 need to be removed before maintenance. The aforementioned drive assembly 5 includes at least two drive cylinders, with both ends of each drive cylinder fixedly connected to the cylinder 2 and the inspection door 4, respectively. The forward and backward movement of the inspection door 4 is achieved by extending and retracting the drive cylinders.

[0044] Furthermore, the support arm 10 includes an upper cantilever 100 and a lower support arm 101; both ends of the stirring shaft 3 are rotatably connected to the upper cantilever 100 and the lower support arm 101, respectively; after the maintenance door 4 is removed, the upper cantilever 100 and the lower support arm 101 provide stable support for the stirring shaft 3. An extension arm 102 is fixedly connected to the upper cantilever; a connecting seat 16 is fixedly connected inside the cylinder 2. When the maintenance door 4 is closed, the end of the extension arm 102 contacts the upper surface of the connecting seat 16, and the connecting seat 16 supports the end of the extension arm 102, ensuring that the stirring shaft 3 has stable support during operation.

[0045] Furthermore, with the above-mentioned structural arrangement, the inspection door 4 and the stirring shaft 3 can be moved out together for the replacement of the liner 9. However, the replacement process requires lifting the liner 9 using a crane or other lifting equipment, and because the liner 9 on the stirring shaft 3 is spiral-shaped, there are certain inconveniences during installation. Therefore, an inspection component 17 is also included, the specific structure of which is as follows:

[0046] The system includes a railcar 170, a rail 171, and a turntable 172. The rail 171 is fixedly installed on the ground in front of the cylinder 2. The railcar 170 is rotatably connected to rail wheels that cooperate with the rail 171. Multiple rail wheels are provided, at least two of which are electrically driven. The railcar 170 is driven to move along the rail 171 by the electrically driven rail wheels. Specifically, multiple tower mills can share a single maintenance assembly 17.

[0047] A rotary table 172 is mounted on a railcar 170, and a push rod 173, which cooperates with the stirring shaft 3, is slidably connected to the rotary table 172. The push rod 173 is connected to a lifting mechanism 18. The push rod 173 is a non-circular rod, specifically a polygonal rod with a disc-shaped top. The lifting mechanism 18 controls the up-and-down movement of the push rod 173, and the rotary table 172 drives the push rod 173 to rotate. When replacing the liner 9, the railcar 170 moves to the front of the cylinder 2; then the inspection door 4, along with the stirring shaft 3, moves out. The lifting assembly drives the push rod 173 upward, so that the upper surface of the push rod 173 abuts against the lower surface of the stirring shaft 3. At this time, by starting the rotary table 172, the push rod 173 and the stirring shaft 3 will rotate together, so that the stirring shaft 3 rotates from the initial angle to an angle convenient for replacing the liner 9. As needed, one liner 9 can be installed, rotated a certain angle, and then the next liner 9 can be installed. After all installations are complete, the stirring shaft 3 needs to be rotated to the initial angle via the rotary table 172.

[0048] Furthermore, the lifting assembly includes a lifting plate 180, a lifting cylinder 181, and a lifting seat 182. The lifting plate 180 is fixedly connected to the railcar 170, the lifting seat 182 is rotatably connected to the push rod 173, and both ends of the lifting cylinder 181 are fixedly connected to the lifting plate 180 and the lifting seat 182, respectively. Because the lifting seat 182 is rotatably connected to the push rod 173, the extension and retraction of the piston rod of the lifting cylinder 181 will not hinder the rotation of the turntable 172.

[0049] Furthermore, a sliding platform 31 is slidably connected to the track vehicle 170, and a telescopic cylinder 32 is provided between the sliding platform 31 and the track vehicle 170; both ends of the telescopic cylinder 32 are fixedly connected to the sliding platform 31 and the track vehicle 170, respectively. The sliding platform 31 moves back and forth by extending and retracting the piston rod of the telescopic cylinder 32.

[0050] A support column 19 is fixedly connected to the sliding table 31, and a crossbeam 20 is provided on the support column 19. A winch 21 is provided on the crossbeam 20. The winch 21 is used to lift the new liner plate 9 instead of a crane or electric hoist. The new liner plate 9 is transferred by moving the sliding table 31.

[0051] Furthermore, a support ring 22 is slidably connected to the support column; a limit plate 23 is hinged to the support ring 22, and an angle-adjusting cylinder 24 is provided between the limit plate 23 and the support ring 22, with both ends of the angle-adjusting cylinder 24 hinged to the limit plate 23 and the support ring 22 respectively. The angle of the limit plate 23 is adjusted by extending and retracting the piston rod of the adjusting cylinder. A lifting mechanism 25 is provided between the support ring 22 and the support column, specifically including a screw and a motor. Both ends of the screw are rotatably connected to the support column and the railcar 170 respectively; the support ring 22 is threadedly connected to the screw; the motor housing is fixedly connected to the support column 19, and the motor output shaft is fixedly connected to the screw. The up and down movement of the support ring 22 is achieved by rotating the screw through the motor output shaft.

[0052] A clamping assembly is provided on the limiting plate 23. After the new liner plate 9 is lifted by the winch 21, the clamping assembly clamps the liner plate 9. Depending on the required installation position, the clamping assembly and the tilt angle of the clamping assembly and the new liner plate 9 are adjusted by the adjusting rod. The height and front-to-back position are adjusted by the lifting mechanism 25 and the telescopic cylinder 32 to transfer the liner plate 9 to the required installation position.

[0053] Furthermore, the clamping assembly includes a support cylinder 26 and a corner cylinder 27; there are two support cylinders 26, which are respectively located at both ends of the limiting plate 23, and the cylinder body of the support cylinder 26 is fixedly connected to the limiting plate 23; the corner cylinder 27 is located in the middle of the limiting plate 23.

[0054] The new liner 9 is lifted by winch 21. During the lifting process, the piston rod of support cylinder 26 retracts to avoid obstructing the lifting of liner 9. When the liner 9 (which has lifting lugs) is lifted to a height exceeding the position of support cylinder 26, the piston rod of support cylinder 26 extends (the extension length must be ensured so as not to affect the installation of liner 9). At this time, the winch 21 is controlled to move liner 9 downward, and liner 9 contacts the piston rod of support cylinder 26. The angle cylinder 27 then actuates (rotates and presses down) to press liner 9 tightly.

[0055] Furthermore, the pressure block of the angle cylinder 27 is connected to the pressure shaft 28 via a connecting assembly, and the pressure shaft 28 is equipped with an anti-slip sleeve. The anti-slip sleeve increases resistance. When the angle cylinder 27 is activated, it will drive the pressure block, pressure shaft 28, and anti-slip sleeve to rotate and move downward to contact the liner plate 9.

[0056] The connecting assembly includes at least two adjusting bolts 30, which are threadedly connected to the pressure block. The ends of the adjusting bolts 30 are rotatably connected to the clamping shaft 28. The height of the clamping shaft 28 is changed by rotating the adjusting bolts 30 according to the thickness of the liner 9.

[0057] The above description only illustrates preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. A tower mill, characterized in that: The device includes a transmission cylinder (1), a cylinder body (2), and a stirring shaft (3). The transmission cylinder (1) is fixedly connected to the cylinder body (2), and the cylinder body (2) is provided with an inspection door (4). A drive assembly (5) is provided between the cylinder body (2) and the inspection door (4), and the inspection door (4) is opened and closed by driving the inspection assembly (5) to move back and forth. A support plate (6) is fixedly connected inside the transmission cylinder (1), and a transmission shaft (7) is rotatably connected to the support plate (6). A drive motor (8) connected to the transmission shaft (7) is provided on the transmission cylinder (1). The stirring shaft (3) is provided with a liner (9); a support arm (10) is fixedly connected to the inspection door (4), the stirring shaft (3) is rotatably connected to the support arm (10), and the upper end of the stirring shaft (3) is connected to the transmission shaft (7) through the transmission assembly (11); when the inspection door (4) moves outward and opens, the stirring shaft (3) will be moved out together through the support arm (10); A ball-filling tube (12) is fixedly connected to the transmission cylinder (1), and a ball-filling hole (13) is provided on the support plate (6). The ball-filling tube (12) communicates with the ball-filling hole (13). A sealing plate (14) is slidably connected to the support plate (6), and a drive cylinder (15) is fixedly connected to the transmission cylinder (1). The piston rod of the drive cylinder (15) passes through the transmission cylinder (1) and is fixedly connected to the sealing plate (14). The drive cylinder (15) drives the sealing plate (14) to move and block the ball-filling hole (13) or expose the ball-filling hole (13). The transmission assembly (11) includes a movable sleeve (110) and a connecting ring (112). The connecting ring (112) is rotatably connected to the movable sleeve (110). The movable sleeve (110) is slidably connected to the support plate (6) through a guide rod (113). A return spring (114) is sleeved on the guide rod (113). The connecting ring (112) is coaxially arranged with the transmission shaft (7). A crossbar (115) is fixedly connected to the connecting ring (112). The transmission shaft (7) and the stirring shaft (3) are both provided with corresponding transverse grooves (116). A guide inclined plate (117) is fixedly connected to the sealing plate (14). A connecting shaft (118) that cooperates with the guide inclined plate (117) is fixedly connected to the guide rod (113).

2. A tower mill according to claim 1, characterized in that: The inspection door (4) is connected to the cylinder (2) by bolts; the drive assembly (5) includes at least two drive cylinders, and the two ends of each drive cylinder are fixedly connected to the cylinder (2) and the inspection door (4) respectively.

3. A tower mill according to claim 1, characterized in that: The support arm (10) includes an upper cantilever (100) and a lower support arm (101); the two ends of the stirring shaft (3) are rotatably connected to the upper cantilever (100) and the lower support arm (101) respectively; an extension arm (102) is fixedly connected to the upper cantilever (100); a connecting seat (16) is fixedly connected inside the cylinder (2), and the end of the extension arm (102) is supported by the connecting seat (16).

4. A tower mill according to claim 1, characterized in that: It also includes a maintenance assembly (17), which includes a railcar (170), a rail (171), and a turntable (172); the railcar (170) is rotatably connected to a rail (171) wheel that cooperates with the rail (171); the turntable (172) is set on the railcar (170), and a top rod (173) that cooperates with the stirring shaft (3) is slidably connected to the turntable (172); the top rod (173) is connected to a lifting mechanism (18).

5. A tower mill according to claim 4, characterized in that: The lifting mechanism includes a lifting plate (180), a lifting cylinder (181), and a lifting seat (182). The lifting plate (180) is fixedly connected to the railcar (170), the lifting seat (182) is rotatably connected to the top rod (173), and the two ends of the lifting cylinder (181) are fixedly connected to the lifting plate (180) and the lifting seat (182) respectively.

6. A tower mill according to claim 4, characterized in that: A sliding platform (31) is slidably connected to the railcar (170), and a telescopic cylinder (32) is provided between the sliding platform (31) and the railcar (170); a support column (19) is fixedly connected to the sliding platform (31), and a crossbeam (20) is provided on the support column (19); a winch (21) is provided on the crossbeam (20).

7. A tower mill according to claim 6, characterized in that: A support ring (22) is slidably connected to the support column (19); a limit plate (23) is hinged to the support ring (22), and an angle adjustment cylinder (24) is provided between the limit plate (23) and the support ring (22); a lifting mechanism (25) is provided between the support ring (22) and the support column (19); and a clamping assembly is provided on the limit plate (23).

8. A tower mill according to claim 7, characterized in that: The clamping assembly includes a support cylinder (26) and a corner cylinder (27); there are two support cylinders (26), which are respectively located at both ends of the limiting plate (23); the corner cylinder (27) is located in the middle of the limiting plate (23).

9. A tower mill according to claim 8, characterized in that: The pressure block of the angle cylinder (27) is connected to the pressure shaft (28) via a connecting assembly. The pressure shaft (28) is provided with an anti-slip sleeve. The connecting assembly includes at least two adjusting bolts (30). The adjusting bolts (30) are threadedly connected to the pressure block, and the ends of the adjusting bolts (30) are rotatably connected to the pressure shaft (28).

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