Aluminum fluoride gravity type self-closing feeding device for aluminum electrolysis

Abstract

The utility model relates to the technical field of electrolytic aluminum production, in particular to an aluminum fluoride gravity type self-closing feeding device for aluminum electrolysis. A partition plate is fixedly connected to the top of an inner cavity of the feeding box, a discharging opening is formed in the top of one side of the partition plate, and a filter screen assembly capable of intercepting large-diameter aluminum fluoride particles is arranged in the discharging opening. The limiting cylinder is mounted at the bottom of the inner cavity of the feeding box. According to the feeding device, the discharging assembly can be vertically aligned with the feeding opening of the aluminum fluoride bin on the upper portion of electrolysis, aluminum fluoride in the feeding box can automatically flow into the aluminum fluoride bin, the simple gravity principle is adopted, faults are not prone to occurring, and the maintenance cost is effectively reduced; the discharging assembly can integrally return to the original position along with the telescopic sleeve through the spring assembly, at the moment, aluminum fluoride in the guide pipe does not flow any more, in this way, an external power source or control equipment is not needed, and automatic control over opening and closing of the material opening is achieved.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic aluminum production technology, specifically to a gravity-type self-closing feeding device for aluminum electrolysis and aluminum fluoride production. Background Technology

[0002] Electrolytic aluminum is pure aluminum extracted from alumina through electrolysis. It is lightweight, corrosion-resistant, and high-strength, making it widely used in various fields such as construction, transportation, power, and machinery manufacturing. During the production process of electrolytic aluminum, as materials are consumed, aluminum fluoride needs to be added to the aluminum fluoride silo at the top of the electrolytic cell at regular intervals. Currently known methods for adding aluminum fluoride to aluminum electrolytic cells include aluminum fluoride feeding carts, feeding tanks connected to a multi-functional overhead crane power supply, and storage tanks installed at the top of the electrolytic cell.

[0003] When using existing gravity-fed self-closing feeding devices for aluminum electrolysis fluoride, each of the three methods—aluminum fluoride feeding cart, feeding tank connected to a multi-functional crane power supply, and storage tank installed on top of the electrolytic cell—has its own advantages and disadvantages. For example, the aluminum fluoride feeding cart itself has a high equipment purchase cost, which is a considerable investment for aluminum electrolysis enterprises. Furthermore, the feeding tank connected to the multi-functional crane power supply is prone to collisions during hoisting, and the control system is easily interfered with and malfunctions in a strong magnetic field environment. As for the method of installing a storage tank on top of the electrolytic cell, the overall installation is more difficult and has many safety hazards, which is not conducive to the production and processing of aluminum electrolysis. Utility Model Content

[0004] The purpose of this invention is to provide a gravity-type self-closing feeding device for aluminum electrolysis and aluminum fluoride, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gravity-type self-closing feeding device for aluminum electrolysis and aluminum fluoride, comprising:

[0006] A feeding box, wherein a partition is fixedly connected to the top of the inner cavity of the feeding box, and a discharge port is provided on the top of one side of the partition. The discharge port is equipped with a filter screen assembly that can intercept large-diameter aluminum fluoride particles.

[0007] A limiting cylinder is installed at the bottom of the inner cavity of the feeding box. A telescopic sleeve is slidably connected inside the limiting cylinder. A feeding component is provided on the outside of the telescopic sleeve to facilitate the entry of aluminum fluoride into the hopper. A spring component is provided at the top of the telescopic sleeve to automatically reset and close the feeding component.

[0008] Preferably, the top of the feeding box is provided with an extension, which is configured as a trapezoidal structure with an opening at the top.

[0009] Preferably, the filter assembly includes a first quadrilateral frame fixed to the inner wall of the discharge port, a second quadrilateral frame above the first quadrilateral frame, a screen filter fixedly connected inside the second quadrilateral frame, and the second quadrilateral frame connected to the first quadrilateral frame by bolts.

[0010] Preferably, the feeding assembly includes a guide tube disposed on the outer side of the bottom end of the telescopic sleeve. The guide tube and the axis of the telescopic sleeve are in the same plane. A limit flange is fixedly connected to the outer side of the top end of the guide tube. The bottom end of the guide tube is provided with no less than three connecting rods, which are distributed equidistantly along the bottom edge of the guide tube. A support rod is fixedly installed on the top of the inner cavity of the telescopic sleeve. The connecting rods are respectively connected to the support rod and the guide tube. A second docking hole is opened on the inner wall of the limit cylinder. A first docking hole corresponding to the second docking hole is opened on the inner wall of the telescopic sleeve. The first docking hole communicates with the inside of the feeding box through the second docking hole.

[0011] Preferably, the bottom of the limiting flange is provided with an insulating flange to protect the guide tube from electrochemical corrosion and leakage.

[0012] Preferably, the spring assembly includes a support seat disposed above the telescopic sleeve. There are two support seats arranged in a mirror image. One support seat is fixedly installed on the top of the inner cavity of the limiting cylinder, and the other support seat is fixedly installed on the top of the telescopic sleeve. A compression spring is provided between the support seats, and the compression spring is connected to the two end support seats respectively.

[0013] Preferably, a supporting beam is provided above the partition, the supporting beam is connected to both sides of the inner wall of the feeding box, and a lifting ring is fixedly installed in the middle of the top surface of the supporting beam.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention allows the feeding assembly to be vertically aligned with the feeding port of the aluminum fluoride silo at the top of the electrolytic cell. The aluminum fluoride inside the feeding box will automatically flow into the aluminum fluoride silo. It adopts a simple gravity principle, which is not prone to failure and effectively reduces maintenance costs. The spring assembly allows the feeding assembly to return to its original position along with the telescopic sleeve. At this time, the aluminum fluoride inside the guide tube will no longer flow. Thus, no external power supply or control equipment is required, and automatic control of the feeding port opening and closing is realized. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the filter assembly structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the spring assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the feeding component structure of this utility model.

[0020] In the diagram: 1. Feeding box; 2. Extension section; 3. Support beam; 4. Lifting ring; 5. Partition plate; 6. Discharge port; 7. Filter assembly; 71. First quadrilateral frame; 72. Second quadrilateral frame; 73. Screening filter; 8. Limiting cylinder; 9. Telescopic sleeve; 10. Discharge assembly; 101. Guide tube; 102. Limiting flange; 103. Support rod; 104. Connecting rod; 105. First mating hole; 106. Second mating hole; 11. Insulating flange; 12. Spring assembly; 121. Support base; 122. Compression spring. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] Please see Figure 1-4 As shown, an aluminum electrolysis aluminum fluoride gravity-type self-closing feeding device includes a feeding box 1. A partition 5 is fixedly connected to the top of the inner cavity of the feeding box 1. A discharge port 6 is opened on one side of the top of the partition 5. The discharge port 6 is equipped with a filter screen assembly 7 that can intercept large-diameter aluminum fluoride particles. By setting the filter screen assembly 7, some undispersed large-diameter aluminum fluoride particles can be intercepted before the aluminum fluoride material enters the feeding box 1, thus reducing the probability of subsequent port blockage and facilitating the aluminum fluoride feeding process. A limiting cylinder 8 is installed at the bottom of the inner cavity of the feeding box 1. A telescopic sleeve 9 is slidably connected inside the limiting cylinder 8. The outer side of the tube 9 is equipped with a feeding component 10 to facilitate the entry of aluminum fluoride into the hopper. By setting the feeding component 10, it can be vertically aligned with the feeding port of the aluminum fluoride hopper at the top of the electrolysis unit. The feeding component 10 will open by its own gravity, thus facilitating the automatic flow of aluminum fluoride into the aluminum fluoride hopper. The top of the telescopic sleeve 9 is equipped with a spring component 12 that can automatically reset and close the feeding component 10. By setting the spring component 12, the telescopic sleeve 9 can be driven to return to its original position after the feeding component 10 has finished its work. At this time, the feeding component 10 is closed, and the aluminum fluoride material no longer leaks out. Thus, no external power supply or control equipment is required, and automatic control is achieved.

[0023] The top of the feeding box 1 is provided with an extension 2, which is a trapezoidal structure with an opening at the top, such as... Figure 1As shown, by setting the extension 2, the opening size at the top of the feeding box 1 is effectively increased, so that aluminum fluoride can enter the feeding box 1 more smoothly. It should also be noted that the extension 2 can be processed by an expansion process, which can enhance the overall strength of the feeding box 1.

[0024] The filter assembly 7 includes a first quadrilateral frame 71 fixed to the inner wall of the discharge port 6, a second quadrilateral frame 72 above the first quadrilateral frame 71, a screening filter 73 fixedly connected inside the second quadrilateral frame 72, and the second quadrilateral frame 72 connected to the first quadrilateral frame 71 by bolts. Figure 1 , Figure 2 As shown, the second quadrilateral frame 72 is situated on top of the first quadrilateral frame 71 located inside the feed inlet 6. Before aluminum fluoride enters the feed box 1, the filter assembly 7 inside the second quadrilateral frame 72 can intercept some undispersed large-diameter aluminum fluoride particles, thus reducing the probability of subsequent feed inlet blockage.

[0025] The feeding assembly 10 includes a guide tube 101 disposed on the outer side of the bottom end of the telescopic sleeve 9. The guide tube 101 and the axis of the telescopic sleeve 9 are in the same plane. A limit flange 102 is fixedly connected to the outer side of the top end of the guide tube 101. At least three connecting rods 104 are provided at the bottom end of the guide tube 101. The multiple connecting rods 104 are equidistantly distributed circumferentially along the bottom edge of the guide tube 101. A support rod 103 is fixedly installed at the top of the inner cavity of the telescopic sleeve 9. The connecting rods 104 are respectively connected to the support rod 103 and the guide tube 101. A second mating hole 106 is provided on the inner wall of the limit cylinder 8. A first mating hole 105 corresponding to the second mating hole 106 is provided on the inner wall of the telescopic sleeve 9. The first mating hole 105 communicates with the inside of the feeding box 1 through the second mating hole 106. Figure 3 , Figure 4 As shown, when it is necessary to replenish the aluminum fluoride silo, the guide tube 101 can be vertically aligned with the feeding port of the upper aluminum fluoride silo in the electrolysis unit. Then, the limiting flange 102 is aligned with the feeding port plane and the telescopic sleeve 9 is driven to slide inside the limiting cylinder 8 until the second docking hole 106 on the inner wall of the limiting cylinder 8 coincides with the first docking hole 105 on the inner wall of the telescopic sleeve 9. At this time, the feeding assembly 10 is in the open state, and the aluminum fluoride in the feeding box 1 will automatically flow into the aluminum fluoride silo. Compared with common aluminum fluoride feeding carts and other methods, this utility model adopts a simple gravity principle, which is less prone to failure and effectively reduces maintenance costs.

[0026] The bottom of the limiting flange 102 is provided with an insulating flange 11 to protect the guide tube 101 from electrochemical corrosion and leakage current. Figure 3 , Figure 4As shown, by setting the insulating flange 11, current isolation can be achieved between the limiting flange 102 and the aluminum fluoride hopper, thereby protecting the guide tube 101 from electrochemical corrosion and leakage, which is beneficial to improving the service life and working stability of the feeding assembly 10.

[0027] Spring assembly 12 includes a support seat 121 disposed above the telescopic sleeve 9. There are two support seats 121 arranged in a mirror image. One support seat 121 is fixedly installed at the top of the inner cavity of the limiting cylinder 8, and the other support seat 121 is fixedly installed at the top of the telescopic sleeve 9. A compression spring 122 is disposed between the support seats 121, and the compression spring 122 is connected to both end support seats 121 respectively. Figure 3 , Figure 4 As shown, when the aluminum fluoride hopper is full, the aluminum fluoride inside the guide tube 101 stops flowing. At this time, the feeding assembly 10 returns to its original position along with the telescopic sleeve 9 under the action of the compression spring 122. At this time, the second docking hole 106 on the inner wall of the limiting cylinder 8 is offset from the first docking hole 105 on the inner wall of the telescopic sleeve 9. Thus, no external power supply or control equipment is required, and automatic control of the feed port opening and closing is realized.

[0028] Above the partition 5, there is a supporting beam 3, which is connected to both sides of the inner wall of the feeding box 1. A lifting ring 4 is fixedly installed in the middle of the top surface of the supporting beam 3. Figure 1 As shown, by setting the lifting ring 4, it is convenient for the staff to use the overhead crane to lift the entire feeding box 1 to the upper part of the electrolysis where aluminum fluoride needs to be added, so that the feeding component 10 can be vertically aligned with the feeding port of the aluminum fluoride silo at the upper part of the electrolysis.

[0029] Working principle: First, the operator uses the lifting ring 4 and an overhead crane to lift the entire feeding box 1 to the upper part of the electrolysis unit where aluminum fluoride needs to be added. When it is necessary to add material to the aluminum fluoride silo, the feeding component 10 can be vertically aligned with the feeding port of the aluminum fluoride silo at the upper part of the electrolysis unit. The aluminum fluoride inside the feeding box 1 will automatically flow into the aluminum fluoride silo. Using a simple gravity principle, it is not easy to malfunction and effectively reduces maintenance costs. When the aluminum fluoride silo is full, the feeding component 10 can be returned to its original position along with the telescopic sleeve 9 by the spring component 12. At this time, the aluminum fluoride inside the guide tube 101 no longer flows. Thus, no external power supply or control equipment is required, realizing automatic control of the feeding port opening and closing.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A gravity type self-closing charging device for electrolysis of aluminum fluoride from aluminum, characterized in that, Include: The feeding tank (1), the inner cavity top of the feeding tank (1) is fixedly connected with a partition (5), the top of one side of the partition (5) is provided with a blanking hole (6), the inside of the blanking hole (6) is provided with a filter screen assembly (7) for intercepting large-diameter aluminum fluoride particles; The limiting cylinder (8) is installed in the inner cavity bottom of the feeding tank (1), the inside of the limiting cylinder (8) is slidably connected with a telescopic sleeve (9), the outside of the telescopic sleeve (9) is provided with a discharging assembly (10) for facilitating the aluminum fluoride to enter the inside of the bin, the top of the telescopic sleeve (9) is provided with a spring assembly (12) for automatically resetting and closing the discharging assembly (10).

2. The gravity type self-closing charging device for aluminum electrolysis aluminum fluoride according to claim 1, characterized in that: The top of the feeding tank (1) is provided with an extension (2), the extension (2) is arranged as a trapezoidal structure with an upper opening.

3. The self-closing charging device for the aluminum electrolysis of aluminum fluoride by gravity according to claim 1, characterized in that: The filter screen assembly (7) includes a first quadrilateral frame (71) fixed to the inner wall of the blanking hole (6), a second quadrilateral frame (72) is arranged above the first quadrilateral frame (71), a sieve filter screen (73) is fixedly connected inside the second quadrilateral frame (72), and the second quadrilateral frame (72) is connected with the first quadrilateral frame (71) through bolts.

4. The gravity type self-closing charging device for aluminum electrolysis aluminum fluoride according to claim 1, characterized in that: The discharging assembly (10) includes a guide pipe (101) arranged outside the bottom end of the telescopic sleeve (9), the guide pipe (101) and the telescopic sleeve (9) are in the same plane along the axis, a limiting flange (102) is fixedly connected outside the top of the guide pipe (101), not less than three connecting rods (104) are arranged at the bottom end of the guide pipe (101), the plurality of connecting rods (104) are distributed equidistantly along the circumferential edge of the bottom of the guide pipe (101), a support rod (103) is fixedly installed at the top of the inner cavity of the telescopic sleeve (9), the connecting rods (104) are respectively connected with the support rod (103) and the guide pipe (101), a second butt joint hole (106) is arranged on the inner wall of the limiting cylinder (8), a first butt joint hole (105) corresponding to the second butt joint hole (106) is arranged on the inner wall of the telescopic sleeve (9), and the first butt joint hole (105) is connected with the inside of the feeding tank (1) through the second butt joint hole (106).

5. The gravity type self-closing charging device for aluminum electrolysis of aluminum fluoride according to claim 4, characterized in that: The bottom of the limiting flange (102) is provided with an insulating flange (11) for protecting the guide pipe (101) from electrochemical corrosion and electric leakage.

6. The gravity type self-closing charging device for aluminum electrolysis aluminum fluoride according to claim 1, characterized in that: The spring assembly (12) includes a support seat (121) arranged above the telescopic sleeve (9), the support seats (121) are mirror images and two in number, one of the support seats (121) is fixedly installed at the top of the inner cavity of the limiting cylinder (8), the other support seat (121) is fixedly installed at the top of the telescopic sleeve (9), a compression spring (122) is arranged between the support seats (121), and the compression spring (122) is connected with the two end support seats (121) respectively.

7. The self-closing charging device for the aluminum electrolysis of aluminum fluoride by gravity according to claim 1, characterized in that: The top of the partition (5) is provided with a supporting cross beam (3), the supporting cross beam (3) is connected with the inner walls of the feeding tank (1) on both sides respectively, and a lifting lifting ring (4) is fixedly installed on the top surface of the middle of the supporting cross beam (3).

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