Rotary feeding device for feeding of aluminum electrolysis crown block

Abstract

The utility model provides a rotary feeding device for feeding of an aluminum electrolysis crown block. The rotary feeding device comprises a rotary drum, a spiral blade, a supporting mechanism, a transmission mechanism, a head mechanism, a tail mechanism and a power distribution control cabinet. The spiral blades are installed on the inner wall of the rotary drum, the rotary drum is supported by the supporting mechanism to be in a high-head low-tail posture, the transmission mechanism drives the rotary drum to rotate in a certain direction and at a certain speed, and after materials are thrown into the drum through the head mechanism, the spiral blades push the materials to the tail of the drum along with rotation of the drum to be discharged out of the drum. The head mechanism and the tail mechanism are both provided with dust collection ports which can be connected with a negative pressure dust collection device, and sealed dust collection of feeding and discharging is achieved. In the whole feeding process, not only is damage-free conveying of the materials achieved, but also full-closed conveying is achieved, flying dust pollution is reduced, manual cleaning work is reduced, and the feeding device is high in practical value.

Description

Technical Field

[0001] This utility model relates to a feeding system for an aluminum electrolysis overhead crane, and in particular to the material conveying part of the feeding system. Background Technology

[0002] In the aluminum electrolysis production process, during electrode replacement and adjustment, the electrolytic cell needs to be filled with covering material and alumina. This filling is done using an electrolytic overhead crane. The crane is equipped with a hopper, with a feeding port at the top and a discharge pipe at the bottom. The electrolysis workshop has overhead crane feeding platforms at appropriate intervals to replenish the hopper. The material for these platforms is conveyed from a larger, elevated hopper located outside the electrolysis workshop.

[0003] Currently, material conveying on overhead crane feeding platforms is mainly done via belt conveyor. Because the covering material is a mixture of granular and powdery materials, pneumatic conveying is not feasible. Early methods often used screw conveyors, but due to the particle size and hardness of the material, these screw conveyors experienced significant wear and were prone to clogging. For example, a screw-feeding hopper car for toughening and flame-retardant functional masterbatch, with publication number CN110759008A, connects and fixes the wheels, bucket, rotary motor, handrails, and uprights together, forming several stable triangular frame structures.

[0004] Chinese utility model patent CN211712132U discloses a crane feeding system. This system uses a screw conveyor and bucket elevator to feed powder into a high-level powder silo, avoiding the dangers of air leaks and pipe bursts associated with high-pressure gas feeding. It also automatically monitors and controls the feeding amount, ensuring precise feeding and preventing issues like insufficient or excessive feeding due to manual judgment. A dust-proof feeding device is also included to effectively prevent dust generation during feeding, thus avoiding environmental pollution and harm to workers' health. However, this solution requires a high-level feeding location, placing high demands on the site conditions.

[0005] Belt conveyors offer low wear and no jamming when conveying materials, and they can deliver materials at high speeds. However, the materials contain a large number of powdery particles that are easily adsorbed, and static electricity is easily generated during belt conveying, leading to serious material carryback at the tail end of the belt conveyor, which can cause dust pollution. The stockpiled materials also require regular cleaning by personnel. It has become an important source of dust pollution in the electrolysis production process and urgently needs to be addressed. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a rotary feeding device for feeding aluminum electrolysis overhead cranes.

[0007] This utility model is achieved through the following technical solution: A rotary feeding device for feeding aluminum electrolysis overhead cranes, comprising a rotary drum and spiral blades disposed on the inner wall of the rotary drum;

[0008] A support mechanism is provided on the rotating drum to lift it up so that the head and tail of the rotating drum are inclined. A transmission mechanism is also provided to drive the rotating drum to rotate in a certain direction and speed.

[0009] The rotating drum is equipped with a head mechanism and a tail mechanism at its head and tail, respectively.

[0010] Furthermore, the rotating drum is a thick-walled steel pipe or a self-winding steel plate pipe. The pipe diameter is selected according to the feeding speed, and the pipe length can be assembled in multiple sections by flange connection as required.

[0011] Furthermore, the spiral blades are spiral blades, and the height of the blades is selected to be the maximum size according to the pipe diameter. The tooth pitch of the spiral blades depends on the particle size of the material and the feeding speed. The particle size of the material is positively correlated with the tooth pitch, and the feeding speed is also positively correlated with the tooth pitch.

[0012] Furthermore, the support mechanism includes a support ring, a roller disposed at the lower end of the support ring, the roller being fixed on the roller bracket, and the number of support mechanisms is set according to the diameter and length of the rotating drum.

[0013] Furthermore, the support ring is disposed on the outer wall of the rotating drum and can be trapezoidal, grooved, or L-shaped; the shape of the idler roller is matched with the support ring, and it can rotate freely and be used in pairs.

[0014] Furthermore, the transmission mechanism mainly includes a driver, a drive ring that is connected to the driver for transmission, and the driver is mounted on a driver bracket.

[0015] Furthermore, the drive ring is set on the outer wall of the rotating drum, and the form of the drive ring includes, but is not limited to, belt drive, gear drive or chain drive; the driver is a motor equipped with a gearbox, and its transmission method includes, but is not limited to, belt drive, gear drive or chain drive.

[0016] Furthermore, the head mechanism includes a head sealing cover, a guide pipe connected to the head sealing cover, and a head dust collection port, with the bottom of the head sealing cover supported by a head bracket.

[0017] The head sealing cover is connected to and seals the head of the rotating drum, and the other end of the head dust collection port is connected to a negative pressure dust collection pipe.

[0018] Furthermore, the tail mechanism includes a tail sealing cover, the upper part of which is connected to a tail dust collection port, and the lower part of which is provided with a tail support.

[0019] The tail sealing cover is connected to the tail of the rotating drum and seals the discharge at the tail of the rotating drum. The lower part guides the discharged material. The other end of the tail dust collection port is connected to a negative pressure dust collection pipe.

[0020] Furthermore, the device is also equipped with a power distribution control cabinet, which uses PLC, microcontroller and other control devices for protection and control, and uses frequency converter to steplessly regulate the speed of the feeding device.

[0021] The beneficial effects of this utility model are as follows: it avoids material carrying back on the conveyor belt, reducing manual cleaning work; the fully enclosed feeding and discharging system can effectively prevent powder from flying and reduce dust pollution; the non-destructive feeding system reduces wear between materials and equipment, and reduces the amount of wear and maintenance required for the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the system structure of this utility model. Figure 1 ;

[0023] Figure 2 for Figure 1 Enlarged view of point A;

[0024] Figure 3 This is a schematic diagram of the system structure of this utility model. Figure 2

[0025] In the picture:

[0026] 1-Rotating drum, 2-Helical blade, 3-Support mechanism, 4-Transmission mechanism, 5-Head mechanism, 6-Tail mechanism, 7-Power distribution control box;

[0027] 3.1-Support ring, 3.2-Idler roller, 3.3-Idler roller bracket;

[0028] 4.1-Drive ring, 4.2-Driver, 4.3-Driver bracket;

[0029] 5.1-Feed guide pipe, 5.2-Head sealing cover, 5.3-Head dust collection port, 5.4-Head support;

[0030] 6.1 - Tail sealing cover; 6.2 - Tail dust collection port; 6.3 - Tail support; Detailed Implementation

[0031] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0032] Reference Figure 1 and Figure 2A rotary feeding device for feeding aluminum electrolysis overhead cranes includes a rotary drum 1, helical blades 2, a support mechanism 3, a transmission mechanism 4, a head mechanism 5, a tail mechanism 6, and a power control cabinet 7. The helical blades 2 are installed on the inner wall of the rotary drum 1. The support mechanism 3 supports the rotary drum 1 at a certain angle from head to tail. The transmission mechanism 4 drives the rotary drum 1 to rotate at a certain direction and speed. Material is added into the rotary drum 1 from the head mechanism 5 and discharged from the rotary drum 1 from the tail mechanism 6, thus achieving material conveying.

[0033] The rotating drum 1 is a thick-walled steel pipe or a self-winding steel pipe made of steel plate, and the pipe length can be assembled in multiple sections by connecting flanges.

[0034] The spiral blade 2 is a continuous spiral blade. The height and tooth pitch of the blade can be adjusted as needed. The height of the blade should be selected to the maximum size according to the pipe diameter. The tooth pitch of the spiral blade 2 depends on the particle size of the material and the feeding speed. The particle size of the material is positively correlated with the tooth pitch, and the feeding speed is also positively correlated with the tooth pitch. The tooth pitch should also take into account the material resistance. If the material particles are not large and flow well, it is necessary to ensure that the material stops flowing as soon as possible when the machine stops, and the tooth pitch should not be too large.

[0035] The support mechanism 3 mainly consists of three parts: a support ring 3.1, an idler roller 3.2, and an idler roller bracket 3.3. The support mechanism 3 primarily supports the rotating drum 1, allowing it to rotate freely. When the head of the rotating drum 1 is higher than its tail, the support mechanism 3 must ensure that the rotating drum 1 does not slide down while rotating freely. The number of support mechanisms 3 can be determined according to the diameter and length of the rotating drum 1. The support ring 3.1 is located on the outer wall of the rotating drum 1 and can be trapezoidal, grooved, or L-shaped. To ensure smooth rotation of the rotating drum 1, the overall roundness of the support ring should be maintained as much as possible. The shape of the idler roller 3.2 should match that of the support ring 3.1. It can rotate freely and is used in pairs. The idler roller bracket 3.3 is mainly used to fix the idler roller (3.2), ensuring its stability and reliability.

[0036] The transmission mechanism 4 mainly consists of three parts: a drive ring 4.1, a driver 4.2, and a driver bracket 4.3. The drive ring 4.1 is located on the outer wall of the rotating drum 1, and can take different forms to accommodate belt drive, gear drive, or chain drive. The driver 4.2 is mainly a gearbox for the motor and can be driven by belt, gear, or chain. The driver bracket 4.3 is mainly used to fix the driver 4.2 to ensure its stability and reliability.

[0037] The head mechanism 5 mainly consists of four parts: a guide pipe 5.1, a head sealing cover 5.2, a head dust collection port 5.3, and a head support 5.4. The guide pipe 5.1 mainly guides the material into the optional roller 1; the head sealing cover 5.2 mainly seals the head of the rotating roller 1 to prevent dust from being emitted and facilitates dust collection; the head dust collection port 5.3 is mainly used to connect to the negative pressure dust collection pipe to collect the dust emitted from the material fed into the head sealing cover (5.2); and the head support 5.4 is mainly used to fix the head mechanism 5.

[0038] The tail mechanism 6 mainly consists of three parts: a tail sealing cover 6.1, a tail dust collection port 6.2, and a tail support 6.3. The tail sealing cover 6.1 seals the material discharge at the tail of the rotating drum 1 and guides the discharged material at the bottom to prevent material splashing and dust generation; the tail dust collection port 6.2 is mainly used to connect the negative pressure dust collection pipe to collect the dust inside the tail sealing cover (6.1); the tail support 6.3 is mainly used to fix the tail mechanism 6.

[0039] The power distribution control cabinet 7 mainly provides power to the rotary feeding device and monitors the rotation status of the rotary drum 1. It uses PLC, microcontroller, and other control devices for protection and control, and a frequency converter for stepless speed regulation of the feeding device.

[0040] This utility model provides a rotary feeding device for feeding aluminum electrolysis overhead cranes. The device uses a rotating drum with helical blades installed inside to rotate the drum. The material is regularly propelled along the gaps between the helical blades inside the drum. Each rotation of the drum transports the material a distance equal to the pitch of one helical blade tooth.

[0041] The rotating drum 1 is angled to achieve a head-high, tail-low posture, facilitating faster feeding. A support mechanism 3 is installed on the rotating drum 1, employing anti-slip measures to prevent the tilted drum from sliding down. The motor drives the rotating drum continuously through a reducer via gear, belt, or chain transmission. A material guide pipe is installed at the feed end of the rotating drum to ensure all material enters the drum. Sealing covers and dust collection ports are installed at the head and tail of the rotating drum to prevent dust from escaping.

Claims

1. A rotary feeding device for feeding aluminum electrolysis overhead cranes, characterized in that: Includes a rotating drum (1) and a spiral blade (2) disposed on the inner wall of the rotating drum (1); A support mechanism (3) is provided on the rotating drum (1) to lift it up so that the head and tail of the rotating drum (1) are inclined. A transmission mechanism (4) is also provided to drive the rotating drum (1) to rotate in a certain direction and speed. The rotating drum (1) is equipped with a head mechanism (5) and a tail mechanism (6) at its head and tail respectively.

2. The rotary feeding device for feeding aluminum electrolysis overhead cranes as described in claim 1, characterized in that: The rotating drum (1) is a thick-walled steel pipe or a self-winding steel plate. The pipe diameter is selected according to the feeding speed, and the pipe length can be assembled in multiple sections by flange connection according to the requirements.

3. The rotary feeding device for feeding aluminum electrolysis overhead cranes as described in claim 1, characterized in that: The spiral blade (2) is a spiral blade. The height of the blade is selected to be the maximum size according to the pipe diameter. The tooth pitch of the spiral blade (2) depends on the particle size of the material and the feeding speed. The particle size of the material is positively correlated with the tooth pitch, and the feeding speed is also positively correlated with the tooth pitch.

4. The rotary feeding device for feeding aluminum electrolysis overhead cranes as described in claim 1, characterized in that: The support mechanism (3) includes a support ring (3.1) and a roller (3.2) disposed at the lower end of the support ring (3.1). The roller (3.2) is fixed on the roller bracket (3.3). The number of support mechanisms (3) is set according to the diameter and length of the rotating drum (1).

5. A rotary feeding device for feeding an aluminum electrolysis overhead crane as described in claim 4, characterized in that: The support ring (3.1) is set on the outer wall of the rotating drum (1) and can be trapezoidal, grooved or L-shaped; the shape of the idler roller (3.2) is matched with the support ring (3.1), and it can rotate freely and be used in pairs.

6. The rotary feeding device for feeding aluminum electrolysis overhead cranes as described in claim 1, characterized in that: The transmission mechanism (4) mainly includes a driver (4.2), a drive ring (4.1) that is connected to the driver (4.2), and the driver (4.2) is mounted on the driver bracket (4.3).

7. A rotary feeding device for feeding an aluminum electrolysis overhead crane as described in claim 6, characterized in that: The drive ring (4.1) is set on the outer wall of the rotating drum (1). The drive ring adopts a form including but not limited to belt drive, gear drive or chain drive. The driver (4.2) is equipped with a gearbox for the motor. Its transmission method includes but is not limited to belt drive, gear drive or chain drive.

8. A rotary feeding device for feeding an aluminum electrolysis overhead crane as described in claim 1, characterized in that: The head mechanism (5) includes a head sealing cover (5.2), a guide pipe (5.1) connected to the head sealing cover (5.2) and a head dust collection port (5.3). The bottom of the head sealing cover (5.2) is supported by a head bracket (5.4). The head sealing cover (5.2) is connected to the head of the rotating drum (1) and sealed, and the other end of the head dust collection port (5.3) is connected to a negative pressure dust collection pipe.

9. A rotary feeding device for feeding an aluminum electrolysis overhead crane as described in claim 1, characterized in that: The tail mechanism (6) includes a tail sealing cover (6.1), with a tail dust collection port (6.2) connected to its upper part and a tail support (6.3) provided at its lower part. The tail sealing cover (6.1) is connected to the tail of the rotating drum (1) and seals the tail discharge of the rotating drum (1) and guides the discharged material at the bottom. The other end of the tail dust collection port (6.2) is connected to a negative pressure dust collection pipe.

10. A rotary feeding device for feeding an aluminum electrolysis overhead crane as described in claim 1, characterized in that: The device is also equipped with a power distribution control cabinet (7), which uses control devices for protection and control, including PLC and microcontroller; and uses frequency converters to perform stepless speed regulation of the feeding device.

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