A device for controlling uniform pulse of fluorine-containing aluminum oxide silo material

Abstract

The utility model relates to electrolytic aluminium production technical field especially relates to a kind of control fluorine-bearing aluminium oxide silo material uniform pulse device.A kind of control fluorine-bearing aluminium oxide silo material uniform pulse device, comprising: silo main body;Distributing disc, the distributing disc is located at the silo main body top;Chuting, the chuting is located above the distributing disc;Spraying structure, the spraying pipe is located in the silo main body, the spraying structure with the distributing disc intercommunication, the spraying structure includes air pipe, air pipe inlet and air pipe outlet, the air pipe is equipped with several short pipes, the air pipe inlet is equipped with valve.The utility model realizes the uniform distribution of fluorine-bearing aluminium oxide in silo by pulse spraying structure, effectively reduces the problem such as feeding difficulty, electrolytic cell effect, reduces labor intensity and cost, improves production efficiency and security.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic aluminum production technology, and in particular to a device for controlling the uniform pulse of fluorine-loaded alumina silos. Background Technology

[0002] In the electrolytic aluminum production process, the alumina material used in the electrolytic plant mainly comes from fluorinated alumina obtained by adsorbing hydrogen fluoride from flue gas through a dust collector system in the cleanroom. This type of fluorinated alumina material is usually transported to the top of the silo by a dilute phase conveying method (such as an air lift), and then enters the silo for storage via chutes and a top distribution tray chute.

[0003] However, after alumina adsorbs hydrogen fluoride, its crystal properties change, specifically manifested as finer particles and a darker color. During the material's flow into the silo, a noticeable uneven distribution occurs: the material particles in the central area of ​​the silo are larger, while those at the edges are finer and more prone to sticking.

[0004] This uneven material distribution can lead to a series of adverse consequences. Finer materials tend to accumulate in large quantities on the sides of the silo within a specific area. If the timing of feeding and adding materials is not properly controlled, it can easily cause difficulties in feeding. This can further trigger the electrolytic cell effect, not only increasing the workload of workshop workers but also raising electricity consumption, seriously impacting the safety and stability of production, and hindering efficient and safe production. Utility Model Content

[0005] The purpose of this invention is to provide a pulse device for controlling the uniform distribution of fluorinated alumina silos, thereby solving the problems that affect safe production, such as uneven distribution of fluorinated alumina in the silo, leading to difficulties in feeding, electrolytic cell effect, increased labor intensity, and increased power consumption.

[0006] A device for controlling the uniform pulse of material in a fluorinated alumina silo includes:

[0007] Silo body;

[0008] The material distribution tray is located on the top of the silo body;

[0009] A chute, located above the material distribution plate;

[0010] A jetting structure is located inside the silo body and is connected to the distribution plate. The jetting structure includes an air duct, an air duct inlet, and an air duct outlet. The air duct is provided with several short pipes. The air duct inlet is used to connect to a compressed air device and is provided with a valve.

[0011] The number of air ducts is several, the top of several air ducts is connected to a first annular pipe, the air duct inlet is connected to the first annular pipe, the bottom of several air ducts is connected to a second annular pipe, and the air duct outlet is connected to the second annular pipe.

[0012] Furthermore, the number of short pipes is several, perpendicular to the air duct, and the spacing is 300mm.

[0013] Furthermore, the duct is made of DN80 steel pipe.

[0014] Furthermore, there are 6-8 air ducts, evenly distributed in a circular shape.

[0015] Furthermore, the valves include electric valves and manual valves.

[0016] Furthermore, the duct inlet is equipped with a pressure device.

[0017] Furthermore, the number of air duct inlets is 2.

[0018] Furthermore, the number of chutes is 2.

[0019] Furthermore, the diameters of the first and second annular pipes are adapted to the inner diameter of the silo body, and the materials of the first and second annular pipes are the same as those of the air duct.

[0020] Furthermore, the short pipe has a length of 100-150mm, and the end of the short pipe away from the air duct faces the inner wall of the silo body.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. Improve material distribution uniformity: Through multiple sets of air ducts and short pipes evenly distributed in a circular shape, combined with the uniform distribution of compressed air achieved by the ring pipeline, precise pulse jet blowing can be performed on materials in different areas of the silo, effectively solving the problems of uneven accumulation of fluorinated alumina in the silo and large differences in material characteristics between the edge and the center, ensuring the overall uniformity of material distribution.

[0023] 2. Enhanced operational controllability and stability: The device is equipped with valves (electric + manual), pressure devices and other components, which can flexibly adjust the injection pressure and timing, and facilitate linkage with the host computer to achieve automated control and reduce human intervention errors; at the same time, the double-ring pipe design improves the structural stability and airflow continuity of the duct system, ensuring reliable operation of the injection process.

[0024] 3. Optimize production efficiency and reduce costs: By improving material uniformity, the frequency of downtime maintenance is reduced due to material distribution problems such as feeding blockage and equipment failure. The reasonable configuration of the distribution plate and chute and the wear-resistant layer design extend the service life of the equipment, reduce maintenance costs, and indirectly improve the efficiency of the overall production process. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 Diagram of a pulse device for controlling the uniformity of material flow in fluorinated alumina silos;

[0027] Figure 2 Cross-sectional view of the pulse device for controlling the uniformity of material flow in fluorinated alumina silos;

[0028] Figure 3 Top view of the device for controlling the uniform pulse distribution of materials in a fluorinated alumina silo;

[0029] Figure 4 A pulse device is being used to control the uniformity of material flow in fluorinated alumina silos.

[0030] Figure 5 Left view of the pulse device for controlling the uniform material flow in a fluorinated alumina silo;

[0031] The components include: 1. Silo body; 2. Distribution plate; 3. Chute; 4. Pulse jetting structure; 5. Air duct; 6. Air duct inlet; 7. Air duct outlet; 41. First ring pipe; 42. First ring pipe; 51. Short pipe; 61. Electric valve; 62. Manual valve; 63. Pressure gauge. Detailed Implementation

[0032] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] The following is in conjunction with the appendix Figure 1 To be continued Figure 5 The present invention will be described in detail with reference to specific embodiments:

[0034] like Figure 1-5As shown in the figure, this embodiment discloses a device for controlling the uniform pulse of fluorine-loaded alumina silo material. Its overall structure includes four core parts: silo body 1, material distribution plate 2, chute 3, and jetting structure 4.

[0035] The silo body 1 is a cylindrical steel structure with a diameter of 5 meters. The inner wall is lined with a 5mm thick high-manganese steel wear-resistant layer to cope with long-term frictional wear from fluorinated alumina materials. The distribution plate 2 is horizontally installed on the inner top of the silo body 1. It has a diameter of 3 meters and 12 evenly distributed 90mm diameter distribution holes at the bottom for initially dispersing the material before feeding it into the silo. Two chutes 3 are symmetrically arranged above the distribution plate 2. The chutes 3 are inclined at a 60° angle to the horizontal. The top of the chutes 3 is connected to the external feeding system, and the bottom is connected to the distribution plate 2 through a conical buffer funnel. The large diameter end of the buffer funnel is 500mm and the small diameter end is 300mm, which can reduce the impact of falling material.

[0036] The jetting structure 4 is a key component for achieving uniform material distribution. It is fixed inside the silo body 1 and includes eight air ducts 5, a first annular pipe 41, a second annular pipe 42, and supporting components. The air ducts 5 are made of DN80 seamless steel pipes, with a length of 4 meters, and are evenly distributed in a circular shape along the inner wall of the silo body 1 (the central angle between adjacent air ducts 5 is 45°). Several short pipes 51 are vertically welded to each air duct 5. The short pipes 51 are made of DN25 steel pipes, with a length of 120mm, and the distance between adjacent short pipes 51 is 300mm. The ends of the short pipes 51 away from the air ducts 5 all face the inner wall of the silo body 1, ensuring that the jetting airflow can directly act on the material near the silo wall.

[0037] The tops of the eight air ducts 5 are connected to the first annular pipe 41, and the bottoms are connected to the second annular pipe 42. Both annular pipes are made of DN100 seamless steel pipe, with a diameter that matches the inner diameter (5 meters) of the silo body 1, forming two annular airflow distribution channels. The first annular pipe 41 has two air duct inlets 6, each connected to a compressed air device via branch pipes. Each inlet is equipped with an electric valve 61 (model ZCX-16P) and a manual valve 62 (model Q41F-16). The electric valve 61 is used for automatic control of airflow interruption, while the manual valve 62 serves as a backup control method. A pressure gauge 63 (range 0-1.6MPa) is also installed at one of the air duct inlets 6 to monitor the compressed air pressure in real time.

[0038] During operation, the fluorinated alumina material enters the distribution plate 2 through two chutes 3, and after initial dispersion through the distribution holes, falls into the silo body 1. When pulse jet cleaning is required, compressed air enters the first annular pipe 41 through the air duct inlet 6, is evenly distributed to eight air ducts 5, and then sprays out towards the inner wall of the silo body 1 through short pipes 51. Simultaneously, part of the airflow enters the second annular pipe 42 through the bottom of the air duct 5, forming a coordinated upper and lower jet cleaning effect. The intermittent opening of the electric valve 61 (the pulse frequency can be set by the host computer) allows the compressed air to act on the material in the silo in a pulse form, effectively preventing material accumulation on the silo wall and ensuring uniform overall distribution. The operator can observe the material storage status in the device by using the level gauges set on the top and center of the silo. When the material level difference exceeds 3 meters, jet cleaning is implemented. The operator can adjust the opening of the electric valve 61 based on the feedback from the pressure gauge 63 to optimize the jet cleaning effect.

[0039] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A device for controlling the uniform pulse of material in a fluorinated alumina silo, characterized in that, include: Silo body; The material distribution tray is located on the top of the silo body; A chute, located above the material distribution plate; A jetting structure is located inside the silo body and is connected to the distribution plate. The jetting structure includes an air duct, an air duct inlet, and an air duct outlet. The air duct is provided with several short pipes. The air duct inlet is used to connect to a compressed air device and is provided with a valve. The number of air ducts is several, the top of several air ducts is connected to a first annular pipe, the air duct inlet is connected to the first annular pipe, the bottom of several air ducts is connected to a second annular pipe, and the air duct outlet is connected to the second annular pipe.

2. The device for controlling the uniform pulse distribution of fluorinated alumina silos according to claim 1, characterized in that, The number of short pipes is several, perpendicular to the air duct, and the spacing is 300mm.

3. The device for controlling the uniform pulse distribution of fluorinated alumina silos according to claim 1, characterized in that, The air duct is made of DN80 steel pipe.

4. The device for controlling the uniform pulse distribution of fluorinated alumina silos according to claim 1, characterized in that, There are 6-8 air ducts, evenly distributed in a circular shape.

5. The device for controlling the uniform pulse distribution of fluorinated alumina silos according to claim 1, characterized in that, The valves include electric valves and manual valves.

6. The device for controlling the uniform pulse of fluorinated alumina silo material according to claim 1, characterized in that, The air duct inlet is equipped with a pressure device.

7. The device for controlling the uniform pulse distribution of fluorinated alumina silos according to claim 1, characterized in that, The number of air duct inlets is 2.

8. The device for controlling the uniform pulse distribution of fluorinated alumina silos according to claim 1, characterized in that, The number of chutes is 2.

9. The device for controlling the uniform pulse of fluorinated alumina silo material according to claim 1, characterized in that, The diameters of the first and second annular pipes are adapted to the inner diameter of the silo body, and the materials of the first and second annular pipes are the same as those of the air duct.

10. The device for controlling the uniform pulse distribution of fluorinated alumina silos according to claim 1, characterized in that, The short pipe is 100-150mm long, and the end of the short pipe away from the air duct faces the inner wall of the silo body.

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