Rotary feeding device for feeding of aluminum electrolysis crown block

Abstract

The invention provides a rotary feeding device for feeding of an aluminum electrolysis crown block. The rotary feeding device comprises a rotary roller, 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] The present invention relates to an aluminum electrolysis overhead crane feeding system, in particular to a material conveying part of the feeding system. Background Art

[0002] During the aluminum electrolysis production process, the electrolytic cells need to be filled with covering material and alumina during pole change and adjustment. This material is added via an overhead crane. The overhead crane is equipped with a silo with a feeding port at the top and a discharge pipe at the bottom. The electrolysis workshop has overhead crane feeding platforms installed at appropriate intervals to refill the silo. The materials for the overhead crane feeding platforms are transported from a larger elevated silo located outside the electrolysis workshop.

[0003] Currently, material transport on overhead crane loading platforms is primarily accomplished via belt conveyors. Because the covering material is a mixture of granular and powdered materials, pneumatic conveying is not feasible. Screw conveyors were previously used, but due to the material's particle size and hardness, they were subject to significant wear and tear on the screw conveyor and prone to clogging. For example, a screw feed hopper vehicle for toughening flame-retardant functional masterbatches, published in publication number CN110759008A, features support rods connecting and securing the wheels, hopper, rotating motor, handrails, and legs, forming a stable triangular framework.

[0004] Chinese utility model publication number CN211712132U discloses an overhead crane feeding system. This system uses a screw conveyor and bucket elevator to feed powder silos at a high position, avoiding the risks of air pipe leaks and bursts associated with high-pressure gas feeding. The system also automatically monitors and controls the feeding amount, ensuring precise feeding and avoiding issues like under- or over-feeding caused by manual judgment. A dust-proof feeding device is also included to effectively prevent dust pollution and worker health hazards during feeding. However, this solution, as feeding is performed at a high location, places high demands on the site.

[0005] Belt conveyors transport materials with little wear and no jamming, and with a fast feeding speed. However, the materials contain a large amount of powdery particles that are easily adsorbed, and static electricity is easily generated during the belt conveying process, resulting in serious material carryover at the tail of the belt conveyor, which is prone to dust pollution. The piled materials also need to be cleaned regularly by personnel, which has become a major source of dust pollution in the electrolytic production process and needs to be solved urgently. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a rotary feeding device for feeding aluminum electrolysis overhead crane.

[0007] The present invention is achieved through the following technical solutions: A rotary feeding device for feeding aluminum electrolysis overhead crane, comprising a rotating drum, and spiral blades arranged on the inner wall of the rotating drum;

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

[0009] The head and tail of the rotating drum are respectively provided with a head mechanism and a tail mechanism.

[0010] Furthermore, the rotating drum is a thick-walled steel pipe or a steel plate self-rolling steel pipe. 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 needs.

[0011] Furthermore, the spiral blade is a spiral blade, and the height of the blade is selected as the maximum size as possible according to the pipe diameter. The pitch of the spiral blade depends on the material particle size and the feeding speed. The material particle size is positively correlated with the pitch size, and the feeding speed is also positively correlated with the pitch size.

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

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

[0014] Furthermore, the transmission mechanism mainly includes a driver and a driving ring that is transmission-connected to the driver, and the driver is arranged on a driver bracket.

[0015] Furthermore, the drive ring is arranged 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 material guide pipe connected to the head sealing cover, and a head dust collecting port, and the bottom of the head sealing cover is supported by a head bracket;

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

[0018] Furthermore, the tail mechanism includes a tail sealing cover, the upper portion of which is connected to a tail dust collecting port, and the lower portion of which is provided with a tail bracket;

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

[0020] Furthermore, the device is also equipped with a power distribution control cabinet, which uses PLC, single-chip microcomputer and other control devices for protection and control, and uses a frequency converter to perform stepless speed regulation on the feeding device.

[0021] The beneficial effects of the present invention are: avoiding the belt carrying material back, reducing the work of manual cleaning; the fully enclosed feeding and discharging can effectively prevent powder from flying and reduce dust pollution; the non-damage feeding reduces the wear between the material and the equipment, and reduces the wear and maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the system structure of the present invention Figure 1 ;

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

[0024] Figure 3 Schematic diagram of the system structure of the present invention Figure 2

[0025] In the picture:

[0026] 1-rotating drum, 2-spiral 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-roller, 3.3-roller bracket;

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

[0029] 5.1- material guide pipe, 5.2- head sealing cover, 5.3- head dust collection port, 5.4- head bracket;

[0030] 6.1- tail sealing cover, 6.2- tail dust collection port, 6.3- tail bracket; DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0032] Reference Figure 1 and Figure 2A rotary feeding device for feeding aluminum electrolysis overhead cranes comprises a rotating drum 1, spiral blades 2, a support mechanism 3, a transmission mechanism 4, a head mechanism 5, a tail mechanism 6, and a power distribution control cabinet 7. The spiral blades 2 are mounted on the inner wall of the rotating drum 1. The support mechanism 3 lifts the rotating drum 1 with the head and tail at a certain angle. The transmission mechanism 4 drives the rotating drum 1 to rotate in a certain direction and speed. Material is added to the rotating drum 1 through the head mechanism 5 and discharged from the rotating drum 1 through the tail mechanism 6, thus achieving material transportation.

[0033] The rotating drum 1 is a thick-walled steel pipe or a steel plate self-rolling steel pipe, and the pipe length can be assembled in multiple sections by flange connection.

[0034] The spiral blade 2 is a continuous spiral blade. The height and 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 pitch of the spiral blade 2 depends on the material particle size and the feeding speed. The material particle size is positively correlated with the pitch size, and the feeding speed is also positively correlated with the pitch size. The size of the pitch must also take into account the ability to resist material. 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 is shut down, and the pitch should not be too large.

[0035] The support mechanism 3 is mainly composed of three parts: a support ring 3.1, a roller 3.2 and a roller bracket 3.3. The support mechanism 3 is mainly used to lift the rotating drum 1, and the rotating drum 1 can rotate freely; when the head of the rotating drum 1 is higher than the tail, the support mechanism 3 must ensure that the rotating drum 1 cannot slide down while rotating freely. The number of support mechanisms 3 can be set 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, groove-shaped or L-shaped. In order to ensure the 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 roller 3.2 should be matched with the support ring 3.1, and it can rotate freely and be used in pairs. The roller bracket 3.3 is mainly used to fix the roller (3.2) to ensure that the roller (3.2) is stable and reliable.

[0036] The transmission mechanism 4 primarily consists of a drive ring 4.1, a driver 4.2, and a driver bracket 4.3. Drive ring 4.1 is mounted on the outer wall of the rotating drum 1 and can be configured in various ways to accommodate belt, gear, or chain drives. Driver 4.2 is primarily a motor with a gearbox, employing belt, gear, or chain drive. Driver bracket 4.3 secures driver 4.2 to ensure stability and reliability.

[0037] The head mechanism 5 is primarily composed of a material guide pipe 5.1, a head sealing cover 5.2, a head dust collection port 5.3, and a head bracket 5.4. The material guide pipe 5.1 primarily guides the material into the optional drum 1. The head sealing cover 5.2 primarily seals the head of the rotating drum 1 to prevent dust from being raised and facilitate dust collection. The head dust collection port 5.3 is primarily used to connect to a negative pressure dust collection pipe to collect the dust raised by the material in the head sealing cover (5.2). The head bracket 5.4 primarily secures the head mechanism 5.

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

[0039] The power distribution control cabinet 7 mainly provides power for the rotary feeding device and monitors the rotation state of the rotary drum 1. PLC, single chip microcomputer and other control devices are used for protection control, and frequency converter is used for stepless speed regulation of the feeding device.

[0040] The present invention provides a rotary feeding device for feeding aluminum electrolysis overhead crane. The device rotates by installing spiral blades in the drum. The material is regularly advanced along the gaps between the spiral blades in the drum. When the drum rotates one circle, the material is transported a distance equal to the pitch of the spiral blades.

[0041] The rotating drum 1 is angled to achieve a high head and low tail position, facilitating faster feeding. The drum 1 is equipped with a support mechanism 3, which incorporates anti-slip features to prevent the drum from sliding down at an angle. A motor, through a speed reducer, drives the drum continuously through gears, belts, or chains. A material guide pipe is installed at the feed end of the drum to ensure that all material enters the drum. Sealing covers and dust collection ports are located at the head and tail of the drum to prevent dust from flying.

Claims

1. A rotary feeding device for feeding aluminum electrolysis overhead crane, characterized by: It comprises a rotating drum (1) and spiral blades (2) arranged on the inner wall of the rotating drum (1); A supporting mechanism (3) is provided on the rotating drum (1) to lift it so that the head and tail of the rotating drum (1) are inclined, and 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 provided with a head mechanism (5) and a tail mechanism (6) at the head and tail, respectively.

2. The rotary feeding device for feeding aluminum electrolysis overhead crane according to claim 1, characterized in that: The rotating drum (1) is a thick-walled steel pipe or a steel plate self-rolling steel pipe. 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 needs.

3. The rotary feeding device for feeding aluminum electrolysis overhead crane according to claim 1, characterized in that: The spiral blade (2) is a spiral blade, and 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 material particle size and the feeding speed. The material particle size is positively correlated with the tooth pitch size, and the feeding speed is also positively correlated with the tooth pitch size.

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

5. The rotary feeding device for feeding aluminum electrolysis overhead crane according to claim 4, characterized in that: The support ring (3.1) is arranged on the outer wall of the rotating drum (1) and can be trapezoidal, groove-shaped or L-shaped; the shape of the roller (3.2) is matched with the support ring (3.1), and the roller itself can rotate freely and is used in pairs.

6. The rotary feeding device for feeding aluminum electrolysis overhead crane according to claim 1, characterized in that: The transmission mechanism (4) mainly comprises a driver (4.2) and a driving ring (4.1) connected to the driver (4.2). The driver (4.2) is arranged on a driver bracket (4.3).

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

8. The rotary feeding device for feeding aluminum electrolysis overhead crane according to claim 1, characterized in that: The head mechanism (5) includes a head sealing cover (5.2), a material guide pipe (5.1) connected to the head sealing cover (5.2), and a head dust collecting 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 is sealed, and the other end of the head dust collecting port (5.3) is connected to a negative pressure dust collecting pipe.

9. The rotary feeding device for feeding aluminum electrolysis overhead crane according to claim 1, characterized in that: The tail mechanism (6) comprises a tail sealing cover (6.1), the upper portion of which is connected to a tail dust collecting port (6.2), and the lower portion of which is provided with a tail bracket (6.3); The tail sealing cover (6.1) is connected to the tail of the rotating drum (1) and seals the discharge of the tail of the rotating drum (1) and guides the discharged material at the bottom. The other end of the tail dust collecting port (6.2) is connected to a negative pressure dust collecting pipe.

10. The rotary feeding device for feeding aluminum electrolysis overhead crane according to claim 1, characterized in that: The device is also equipped with a power distribution control cabinet (7), which uses control devices such as PLC and single-chip microcomputer for protection control, and uses a frequency converter to perform stepless speed regulation on the feeding device.

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