Efficient screening hopper for overhaul slag charge of aluminum electrolysis cell

Abstract

The utility model provides a high-efficiency screening hopper for overhaul slag charge of an aluminum electrolysis cell, and relates to the field of electrolytic aluminum industry. The feeding hopper is supported by a first support, and a conveying belt is arranged below a hopper opening in the bottom of the feeding hopper. Vibration of the vibration table is conducted to all stages of vibration sieve plates through the connecting plate, so that slag materials with small particle sizes on the vibration sieve plates fall down from sieve holes, and slag materials with large particle sizes are screened out through the passing plate, the material guide groove and the discharging pipe. Small-size slag materials falling from sieve holes of the vibrating sieve plate fall onto the bottom plate of the screening channel, the slag materials on the bottom plate are accelerated to fall into the next-stage screening channel from the connecting channel through rapping of the rapping device, and therefore multi-stage screening of the aluminum electrolysis cell overhaul slag materials is completed, the particle size difference of all stages of slag materials after screening is more obvious, and the screening efficiency is improved. Therefore, the slag materials can be conveniently recycled after screening; the problem that the particle size difference of slag materials screened by an existing screening funnel is not obvious is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electrolytic aluminium industry field, more specifically, especially relate to a kind of aluminium electrolytic cell overhaul slag high-efficiency screening hopper. BACKGROUND

[0002] In the electrolytic aluminium industry, aluminium electrolytic cell needs to be stopped every time a period to overhaul, remove the waste lining in electrolytic cell, to ensure the smooth progress of electrolytic reaction, and the waste lining generated by electrolytic cell is aluminium electrolytic cell overhaul slag, and after recovery, it can be reused, and it is often necessary to use screening hopper to screen the particle size of slag for subsequent recovery and processing.

[0003] Based on the above, the existing screening hopper often needs to be loaded frequently when dealing with more slag, rather than loading while screening, which reduces work efficiency;And the screening funnel only screens the slag a few times, and the particle size difference of the screened slag is not obvious, which is not convenient for subsequent recovery and processing. SUMMARY

[0004] To solve the above technical problems, the utility model provides a kind of aluminium electrolytic cell overhaul slag high-efficiency screening hopper to solve the problem that the particle size difference of the slag screened by the existing screening funnel is not obvious.

[0005] The utility model provides a kind of aluminium electrolytic cell overhaul slag high-efficiency screening hopper, which is achieved by the following specific technical means:

[0006] A kind of aluminium electrolytic cell overhaul slag high-efficiency screening hopper, including feeding hopper;The feeding hopper is supported by first support, and the feeding hopper bottom funnel mouth is below conveying belt, the conveying belt is inclined, and the feeding hopper is close to the lower end of the inclined side of conveying belt, the conveying belt is around three groups of rotating shafts, the rotating shafts are rotatably connected to side support plates at both ends, the side support plates are two groups and are fixedly connected between the upper end and the lower end, and the side support plates are supported by second support;Classified screening structure is arranged near the upper end of the inclined side of the conveying belt, and the classified screening structure includes first screening channel, second screening channel and third screening channel from top to bottom;First connecting channel is communicated between the first screening channel and the second screening channel, and second connecting channel is communicated between the second screening channel and the third screening channel;Inclined vibrating screen plate is fixedly connected in the first screening channel, the second screening channel and the third screening channel, a plurality of screen holes are formed in the vibrating screen plate, the vibrating screen plate is smoothly connected to through plate at the lower end of the inclined side, and the through plate is provided with a necked guide chute at one side;The guide chute connected with the first screening channel is communicated with first discharge pipe;The guide chute connected with the second screening channel is communicated with second discharge pipe;The first screening channel, the second screening channel and the third screening channel are supported by third support.

[0007] Furthermore, a group of the rotating shafts are connected to a driving structure, which includes a driving motor, which is fixedly mounted on the outer side of a side support plate through a motor seat, and the rotating shaft of the driving motor is fixedly connected to a pulley A, a belt is wrapped around pulley A, and the belt is also wrapped around pulley B, which is fixedly connected to one side of the rotating shaft, and both ends of the rotating shaft are rotatably connected to the shaft-connecting bracket, and the bottom of the shaft-connecting bracket is fixedly connected to the first bracket.

[0008] Furthermore, the inner wall of the side support plate is fixedly connected to the anti-side leakage plate, and the anti-side leakage plate is close to both sides of the conveyor belt; an extension plate is set on the upper end of the side support plate, and the downward-inclined discharge plate is fixedly connected between the extension plates, and the discharge plate is located directly above the discharge port opened in the first-level screening channel.

[0009] Furthermore, the sieve hole radius of the vibrating screen plates fixedly connected in the primary screening channel, the secondary screening channel and the tertiary screening channel is gradually reduced.

[0010] Furthermore, a material drop chute is provided at the bottom of the three-stage screening channel, the bottom of the material drop chute is connected to multiple third connecting channels, the lower ends of the third connecting channels are all connected to closed collecting troughs, and an end door is provided on one side of the collecting trough.

[0011] Furthermore, a vibration device is fixedly connected below the bottom plate of the first-level screening channel and the second-level screening channel; both sides of the first-level screening channel, the second-level screening channel and the third-level screening channel are fixedly connected to the connecting plate, and a vibration table is fixedly connected to the connecting plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The utility model is provided with a driving structure and a conveyor belt. The driving structure drives the conveyor belt to transport the aluminum electrolytic cell overhaul slag in the feeding hopper to the grading screening structure to complete the loading. When loading, the operator does not need to climb above the grading screening structure to add material, which ensures the safety of operation and makes loading more convenient.

[0014] 2. The utility model sets up a multi-stage screening channel. The vibration of the vibration table transmits the vibration to the vibration screen plates at each level through the connecting plate, so that the slag with smaller particle size on the vibration screen plate falls from the sieve hole, and the slag with larger particle size is screened out through the plate, the guide trough and the discharge pipe; the small-sized slag falling from the sieve hole of the vibration screen plate falls to the bottom plate of the screening channel, and the slag on the bottom plate is accelerated by the vibration device to fall from the connecting channel into the next screening channel, thereby completing the multi-stage screening of the slag material of the overhaul of the aluminum electrolytic cell. After screening, the particle size difference of the slag material at each level is more obvious, which is convenient for the recycling of the slag material after screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the first perspective view of the present invention.

[0016] Figure 2 This is a second viewing angle of the present invention.

[0017] Figure 3 It is a half-section view of the graded screening structure of the utility model.

[0018] Figure 4 It is a structural diagram of the driving structure of the utility model.

[0019] Figure 5 This utility model Figure 1 A partial enlarged view of point A in the middle.

[0020] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0021] 1. Feeding hopper; 2. First bracket; 3. Driving motor; 4. Side support plate; 5. Rotating shaft; 6. Conveyor belt; 7. Extension plate; 8. Unloading plate; 9. Side leakage prevention plate; 10. Second bracket; 11. Motor seat; 12. Pulley A; 13. Belt; 14. Pulley B; 15. Shaft connecting bracket; 16. Primary screening channel; 17. Unloading port; 18. Vibrating screen plate; 19. Passing plate; 20. Guide trough; 21. First discharge pipe; 22. First connecting channel; 23. Secondary screening channel; 24. Second discharge pipe; 25. Second connecting channel; 26. Tertiary screening channel; 27. Unloading chute; 28. Third connecting channel; 29. ​​Collecting trough; 30. End door; 31. Vibrating device; 32. Third bracket; 33. Connecting plate; 34. Vibrating table. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. Example

[0023] As attached Figure 1 To the attached Figure 5 As shown:

[0024] The utility model provides an efficient screening hopper for slag material from overhaul of an aluminum electrolytic cell, comprising a feeding hopper 1; the feeding hopper 1 is supported by a first bracket 2, a conveyor belt 6 is provided below the funnel opening at the bottom of the feeding hopper 1, the conveyor belt 6 is inclined, and the feeding hopper 1 is close to the lower end of the inclined conveyor belt 6, the conveyor belt 6 surrounds three groups of rotating shafts 5, both ends of the rotating shafts 5 are rotatably connected to side support plates 4, there are two groups of side support plates 4, and the side support plates 4 are fixedly connected at the upper and lower ends, and the side support plates 4 are supported by a second bracket 10; a graded screening structure is provided near the upper end of the inclined conveyor belt 6, and the graded screening structure comprises, from top to bottom, a primary screening channel 16, a secondary screening channel 23 and a tertiary screening channel 26; the primary screening channel 16 and the secondary screening channel 23 are connected to each other. A first connecting channel 22 is connected between them, and a second connecting channel 25 is connected between the secondary screening channel 23 and the tertiary screening channel 26; the primary screening channel 16, the secondary screening channel 23 and the tertiary screening channel 26 are fixedly connected with an inclined vibrating screen plate 18, and the vibrating screen plate 18 is provided with dense sieve holes. The inclined lower end of the vibrating screen plate 18 is smoothly connected to the plate 19, and a material guide trough 20 with a necked opening is provided on one side of the plate 19; the material guide trough 20 connected to the primary screening channel 16 is connected to a first discharge pipe 21; the material guide trough 20 connected to the secondary screening channel 23 is connected to a second discharge pipe 24; the primary screening channel 16, the secondary screening channel 23 and the tertiary screening channel 26 are supported by a third bracket 32.

[0025] Among them, such as Figure 4 As shown, a set of rotating shafts 5 are connected to the driving structure, which includes a driving motor 3. The driving motor 3 is fixedly mounted on the outer side of the side support plate 4 through a motor seat 11. The rotating shaft of the driving motor 3 is fixedly connected to a pulley A12. A belt 13 is wrapped around the pulley A12. The belt 13 also wraps around the pulley B14. The pulley B14 is fixedly connected to one side of the rotating shaft 5. Both ends of the rotating shaft 5 are rotatably connected to the shaft connecting bracket 15. The bottom of the shaft connecting bracket 15 is fixedly connected to the first bracket 2. Figure 5 As shown, the inner wall of the side support plate 4 is fixedly connected to the anti-side leakage plate 9, and the anti-side leakage plate 9 is close to both sides of the conveyor belt 6; an extension plate 7 is provided on the upper end of the side support plate 4, and a downward-inclined discharge plate 8 is fixedly connected between the extension plates 7, and the discharge plate 8 is located directly above the discharge port 17 opened in the first-level screening channel 16; the conveyor belt 6 is driven by the driving structure to transport the aluminum electrolytic cell overhaul slag in the feeding hopper 1 to the graded screening structure to complete the loading. When loading, the operator does not need to climb above the graded screening structure, which ensures the safety of operation and makes loading more convenient.

[0026] Among them, such as Figure 3 As shown, the sieve hole radius of the vibrating screen plates 18 fixedly connected in the first-stage screening channel 16, the second-stage screening channel 23 and the third-stage screening channel 26 is gradually reduced; after multi-stage screening, the particle size of the aluminum electrolytic cell overhaul slag material is gradually reduced.

[0027] Among them, such as Figure 3 As shown, a blanking chute 27 is provided at the bottom of the three-stage screening channel 26, and a plurality of third connecting channels 28 are connected to the bottom of the blanking chute 27. The lower ends of the third connecting channels 28 are all connected to a closed collecting trough 29, and an end door 30 is provided on one side of the collecting trough 29; the collecting trough 29 is used to collect and temporarily store the aluminum electrolytic cell overhaul slag powder falling from the sieve holes of the vibrating sieve plate 18 in the third screening channel 26. When the capacity of the collecting trough 29 is about to be full, the end door 30 is opened to take out the slag powder for recycling.

[0028] Among them, such as Figure 3 As shown, a vibrating device 31 is fixedly connected below the bottom plate of the secondary screening channel 23 of the primary screening channel 16, which accelerates the slag to fall into the next screening channel by vibrating, thereby accelerating the overall process of slag screening; the primary screening channel 16, the secondary screening channel 23 and the tertiary screening channel 26 are fixedly connected to the connecting plate 33 on both sides, and a vibration table 34 is fixedly connected to the connecting plate 33. The vibration table 34 vibrates and transmits the vibration to the vibration screen plates 18 at each level through the connecting plate 33, so that the slag with smaller particle size on the vibration screen plate 18 falls through the sieve hole.

[0029] The specific usage and function of this embodiment are as follows:

[0030] In the present invention, the driving motor 3 is started, and the rotating shaft 5 is driven to rotate through the pulley A12, the belt 13 and the pulley B14, thereby driving the conveyor belt 6 to run; the slag material of the aluminum electrolytic cell overhaul is added into the feeding hopper 1, and the slag material falls onto the conveyor belt 6 from the funnel mouth at the bottom of the feeding hopper 1, and the conveyor belt 6 transports the slag material upward to the discharge plate 8. During this period, the anti-side leakage plates 9 tightly attached to both sides of the conveyor belt 6 prevent the slag material from falling from both sides of the conveyor belt 6 and causing material waste. After that, the slag material on the discharge plate 8 falls from the discharge port 17 onto the vibrating screen plate 18 of the first-level screening channel 16 of the graded screening structure, and the vibrating table 34 vibrates and transmits the vibration to the vibrating screen plates 18 at all levels through the connecting plate 33, so that the slag material with smaller particle size on the vibrating screen plate 18 falls from the sieve hole. The slag with larger particle size is screened out through the plate 19, the guide trough 20 and the first discharge pipe 21, thereby completing the first-level screening; the slag falling from the sieve holes of the vibrating screen plate 18 falls onto the bottom plate of the first-level screening channel 16, and is accelerated by the vibration device 31 to fall from the first connecting channel 22 into the next-level screening channel; similarly, the second and third-level screening of the slag are completed through the above steps, and the particle size of the aluminum electrolytic cell overhaul slag is gradually reduced after multi-level screening; the aluminum electrolytic cell overhaul slag powder falling from the sieve holes of the vibrating screen plate 18 in the third screening channel 26 falls into the collecting trough 29 through the third connecting channel 28 for temporary storage, and when the capacity of the collecting trough 29 is about to be full, the end door 30 is opened to take out the slag for recycling.

[0031] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. A high-efficiency screening hopper for slag material during overhaul of an aluminum electrolytic cell, comprising a feeding hopper (1); the feeding hopper (1) is supported by a first bracket (2), and is characterized in that: A conveyor belt (6) is provided below the bottom funnel opening of the feeding hopper (1), the conveyor belt (6) is inclined, and the feeding hopper (1) is close to the lower end of the inclined conveyor belt (6), the conveyor belt (6) surrounds three groups of rotating shafts (5), and the two ends of the rotating shafts (5) are rotatably connected to the side support plates (4), there are two groups of side support plates (4), and the side support plates (4) are fixedly connected at the upper and lower ends, and the side support plates (4) are supported by the second bracket (10); a graded screening structure is provided near the upper end of the inclined conveyor belt (6), and the graded screening structure includes a primary screening channel (16), a secondary screening channel (23) and a tertiary screening channel (26) from top to bottom; a first connecting channel (22) is connected between the primary screening channel (16) and the secondary screening channel (23), and the secondary screening channel (23) is connected to the tertiary screening channel (26). A second connecting channel (25) is connected between the three-stage screening channels (26); an inclined vibrating screen plate (18) is fixedly connected in the first-stage screening channel (16), the second-stage screening channel (23) and the third-stage screening channel (26); the vibrating screen plate (18) is provided with dense screen holes, and one side of the inclined lower end of the vibrating screen plate (18) is smoothly connected to the through plate (19), and a material guide trough (20) with a narrowed opening is provided on one side of the through plate (19); the material guide trough (20) connected to the first-stage screening channel (16) is connected to a first discharge pipe (21); the material guide trough (20) connected to the second-stage screening channel (23) is connected to a second discharge pipe (24); the first-stage screening channel (16), the second-stage screening channel (23) and the third-stage screening channel (26) are supported by a third bracket (32).

2. The high-efficiency screening hopper for aluminum electrolytic cell overhaul slag according to claim 1, characterized in that: A set of rotating shafts (5) are connected to a driving structure, which includes a driving motor (3). The driving motor (3) is fixedly mounted on the outside of a side support plate (4) through a motor seat (11). The rotating shaft of the driving motor (3) is fixedly connected to a pulley A (12). A belt (13) is wound around the pulley A (12). The belt (13) also wraps around a pulley B (14). The pulley B (14) is fixedly connected to one side of the rotating shaft (5). Both ends of the rotating shaft (5) are rotatably connected to a shaft-connecting bracket (15). The bottom of the shaft-connecting bracket (15) is fixedly connected to the first bracket (2).

3. The high-efficiency screening hopper for aluminum electrolytic cell overhaul slag according to claim 1, characterized in that: The inner wall of the side support plate (4) is fixedly connected to the side leakage prevention plate (9), and the side leakage prevention plate (9) is closely attached to both sides of the conveyor belt (6); an extension plate (7) is provided at the upper end of the side support plate (4), and a downwardly inclined discharge plate (8) is fixedly connected between the extension plates (7), and the discharge plate (8) is located directly above the discharge port (17) opened in the first-level screening channel (16).

4. The high-efficiency screening hopper for aluminum electrolytic cell overhaul slag according to claim 1, characterized in that: The sieve hole radius of the vibrating sieve plates (18) fixedly connected in the first-stage screening channel (16), the second-stage screening channel (23), and the third-stage screening channel (26) is gradually reduced.

5. The high-efficiency screening hopper for aluminum electrolytic cell overhaul slag according to claim 1, characterized in that: A material drop chute (27) is provided at the bottom of the three-stage screening channel (26), and the bottom of the material drop chute (27) is connected to a plurality of third connecting channels (28). The lower ends of the third connecting channels (28) are all connected to a closed collecting chute (29), and an end door (30) is provided on one side of the collecting chute (29).

6. The high-efficiency screening hopper for aluminum electrolytic cell overhaul slag according to claim 1, characterized in that: A vibration device (31) is fixedly connected below the bottom plate of the primary screening channel (16) and the secondary screening channel (23); both sides of the primary screening channel (16), the secondary screening channel (23) and the tertiary screening channel (26) are fixedly connected to a connecting plate (33), and a vibration table (34) is fixedly connected to the connecting plate (33).

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