Small gas stripping dust remover for aluminum electrolysis

Abstract

The utility model discloses a small gas stripping dust remover for aluminum electrolysis, and relates to the technical field of aluminum electrolysis equipment, a material lifting pipe is arranged at the top of a box body in a penetrating manner, one end of the material lifting pipe is communicated with a dust removal cavity in the box body, and the other end of the material lifting pipe extends out of the box body, so that alumina powder can be smoothly conveyed through the material lifting pipe; meanwhile, the ceramic wear-resisting pipe is arranged in the material lifting pipe in a sleeving manner, so that the ceramic wear-resisting pipe is used as a contact surface in the alumina powder conveying process, the friction between the alumina powder and the material lifting pipe can be effectively reduced, and the ceramic wear-resisting pipe is not easily worn by the alumina powder as the ceramic wear-resisting pipe has excellent wear resistance; and the ceramic wear-resisting pipe is detachably connected with the material lifting pipe through the connecting piece, so that when the ceramic wear-resisting pipe is abraded to a certain degree by alumina powder due to long-time use, the ceramic wear-resisting pipe can be conveniently replaced, the whole material lifting pipe does not need to be replaced, and the service life of the material lifting pipe is further prolonged.

Description

Technical Field

[0001] This application relates to the field of aluminum electrolysis equipment technology, and in particular to a small-scale aluminum electrolysis gas lift dust collector. Background Technology

[0002] Currently, small-scale gas lift dust collectors for aluminum electrolysis have become key dust removal equipment for treating harmful gases such as hydrogen fluoride on aluminum electrolysis production lines. Their working principle mainly utilizes the flow characteristics of gas when passing through a specific structure to achieve efficient separation and collection of dust.

[0003] During the aluminum electrolysis process, the dust-laden gas is first introduced into the pretreatment zone of the small airlift dust collector. After a series of pretreatment measures, most of the dust particles are separated from the gas by the airflow and deposited at the bottom of the dust collector. At the same time, the gas that has been preliminarily purified carries alumina powder and is transported to the subsequent processing stage through the lifting pipe.

[0004] However, due to the high friction of alumina powder, when it flows in the lifting pipe, it will inevitably cause wear on the inner wall of the lifting pipe. After long-term operation, this wear will become quite serious and may even wear through the inner wall of the lifting pipe. This wear will lead to uneven lifting operation, affect the dust removal effect of the dust collector, and reduce the service life of the small air lifting dust collector. Utility Model Content

[0005] This application provides a small-scale aluminum electrolysis gas lift dust collector, which can solve the problem of wear on the inner wall of the lifting pipe by alumina powder after long-term operation.

[0006] This application provides a small-scale aluminum electrolysis dust collector, which includes a housing, a lifting pipe, and a ceramic wear-resistant pipe. A dust removal chamber is formed inside the housing. The lifting pipe passes through the top of the housing, with one end communicating with the dust removal chamber and the other end extending out of the housing. The ceramic wear-resistant pipe is sleeved inside the lifting pipe and is detachably connected to the lifting pipe via a connector, so that the ceramic wear-resistant pipe communicates with the dust removal chamber.

[0007] Optionally, in some embodiments, the ceramic wear-resistant tube is interference-fitted into the lifting tube, and the opposite ends of the ceramic wear-resistant tube extend beyond the opposite ends of the lifting tube.

[0008] Optionally, in some embodiments, the aluminum electrolysis small air-lift dust collector further includes a flexible hose, with one end of the ceramic wear-resistant tube located outside the housing connected to the flexible hose.

[0009] Optionally, in some embodiments, the aluminum electrolysis small gas lifting dust collector further comprises a support structure arranged inside the box, and the support structure comprises a support plate fixed to the inner side wall of the box, the support plate is provided with a mounting hole, and the lifting pipe is inserted and fixed in the mounting hole.

[0010] Optionally, in some embodiments, one end of the lifting pipe outside the box is connected with one end of the ceramic wear-resistant pipe outside the box through the connecting piece.

[0011] Optionally, in some embodiments, the aluminum electrolysis small gas lifting dust collector further comprises a gas lifting box, the gas lifting box is installed at the bottom of the box, and the gas lifting box is provided with a gas supply pipe, one end of the gas supply pipe is located outside the gas lifting box, and the other end of the gas supply pipe is located inside the box and is arranged opposite to the ceramic wear-resistant pipe.

[0012] Optionally, in some embodiments, the top of the gas lifting box is provided with a first flange plate, the bottom of the box is provided with a second flange plate, and the first flange plate is connected with the second flange plate through a plurality of bolts.

[0013] Optionally, in some embodiments, one end of the gas supply pipe outside the gas lifting box is provided with a filter piece.

[0014] Optionally, in some embodiments, the box is provided with a lifting port and an adjusting plate, the adjusting plate is rotatably installed on one side of the lifting port, and the adjusting plate can be rotated to shield at least part of the lifting port.

[0015] Optionally, in some embodiments, the outer side wall of the lifting pipe is provided with a wear-resistant and corrosion-resistant coating.

[0016] The aluminum electrolysis small gas lifting dust collector provided by the embodiments has the following technical effects: the lifting pipe is arranged at the top of the box, one end of the lifting pipe is communicated with the dust removal cavity in the box, and the other end of the lifting pipe extends out of the box, so that the alumina powder can be smoothly conveyed through the lifting pipe; the ceramic wear-resistant pipe is sleeved in the lifting pipe, the ceramic wear-resistant pipe serves as the contact surface of the alumina powder during conveying, which can effectively reduce the friction between the alumina powder and the lifting pipe; the ceramic wear-resistant pipe has excellent wear resistance and is not easy to be worn by the alumina powder, so the service life of the lifting pipe can be significantly improved; the ceramic wear-resistant pipe is detachably connected with the lifting pipe through the connecting piece, when the ceramic wear-resistant pipe is worn by the alumina powder to a certain extent due to long-time use, the ceramic wear-resistant pipe can be conveniently replaced without replacing the entire lifting pipe, which not only further prolongs the service life of the lifting pipe, but also ensures the stability and continuity of the alumina powder conveying. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 It is an internal structure schematic diagram of an aluminum electrolysis small gas lifting dust collector in an embodiment of the present application.

[0019] Figure 2 It is a three-dimensional structure schematic diagram of an aluminum electrolysis small gas lifting dust collector in an embodiment of the present application.

[0020] Explanation of reference signs:

[0021] 1, box body; 11, dust removal cavity; 12, second flange plate; 13, lifting port; 14, adjusting plate; 2, lifting pipe; 3, ceramic wear-resistant pipe; 4, connecting piece; 5, hose; 6, support structure; 61, support plate; 7, gas lifting tank; 71, first flange plate; 8, gas supply pipe; 81, filter piece; 9, bolt. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.

[0023] It should be noted that the same or similar reference signs in the drawings of the embodiments correspond to the same or similar parts; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation of the present patent.

[0024] At the same time, in the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0025] In addition, in the utility model, unless another definite provision and limitation, the term "connect", "fix" and so on should do the broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be two element internal communication or two element's interaction relation, unless another definite limitation. For the ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0026] And, the technical scheme of each embodiment of the utility model can be combined with each other, but it must be based on that the ordinary skilled person in the art can realize, when the combination of technical scheme appears mutual contradiction or cannot be realized, it should be considered that the combination of technical scheme does not exist, also not in the protection scope required by the utility model.

[0027] Please refer to Figure 1 And Figure 2 It is an aluminum electrolysis small gas lifting dust collector that the utility model provides for the embodiment of the application, which includes box body 1, lifting material pipe 2 and ceramic wear-resistant pipe 3.

[0028] Specifically, the box body 1 can adopt the structure similar to cuboid, the inside is formed with dust removal cavity 11, and the lifting material pipe 2 is arranged at the top of the box body 1, the lifting material pipe 2 is usually a circular pipe, and one end of the lifting material pipe 2 is communicated with the dust removal cavity 11, and the other end of the lifting material pipe 2 extends to the outside of the box body 1.

[0029] In the aluminum electrolysis process, the dust-containing gas is first introduced into the dust removal cavity 11, in the dust removal cavity 11, after dust removal treatment, most of the dust particles are separated from the gas under the action of the airflow, and the dust particles are deposited at the bottom of the box body 1, and at the same time, the gas carrying the aluminum oxide powder after preliminary purification is transported to the outside of the box body 1 through the lifting material pipe 2.

[0030] The ceramic wear-resistant pipe 3 is sleeved in the lifting material pipe 2, and the ceramic wear-resistant pipe 3 is detachably connected with the lifting material pipe 2 through the connecting piece 4, so that the ceramic wear-resistant pipe 3 can be communicated with the dust removal cavity 11, so that the ceramic wear-resistant pipe 3 can be used as the contact surface of the aluminum oxide powder transported in the lifting material pipe 2, which can effectively reduce the friction between the aluminum oxide powder and the lifting material pipe 2, and since the ceramic wear-resistant pipe 3 has excellent wear resistance and is not easy to be worn by the aluminum oxide powder, the service life of the lifting material pipe 2 can be significantly improved.

[0031] At the same time, since the ceramic wear-resistant pipe 3 and the lifting material pipe 2 are detachably connected, when the ceramic wear-resistant pipe 3 is worn by the aluminum oxide powder to a certain extent due to long-term use, it can be conveniently replaced without replacing the whole lifting material pipe 2, which not only further prolongs the service life of the lifting material pipe 2, but also ensures the stability and continuity of the aluminum oxide powder transportation.

[0032] Please see Figure 1 In some embodiments, the outer contour shape of the ceramic wear-resistant tube 3 is the same as the inner contour shape of the lifting tube 2, both being circular tubes. Furthermore, the outer contour dimension of the ceramic wear-resistant tube 3 is the same as the inner contour dimension of the lifting tube 2, or the outer contour dimension of the ceramic wear-resistant tube 3 is slightly larger than the inner contour dimension of the lifting tube 2, so that the ceramic wear-resistant tube 3 can be interference-fitted into the lifting tube 2. This allows the outer wall of the ceramic wear-resistant tube 3 to be in close contact with the inner wall of the lifting tube 2, preventing alumina powder from entering between the outer wall of the ceramic wear-resistant tube 3 and the inner wall of the lifting tube 2, further reducing the friction between the alumina powder and the lifting tube 2.

[0033] Meanwhile, along the length of the lifting pipe 2, the two ends of the ceramic wear-resistant pipe 3 extend beyond the two ends of the lifting pipe 2, so that the ceramic wear-resistant pipe 3 can completely cover the inner wall of the lifting pipe 2. Thus, when the alumina powder is transported to the outside of the box 1 through the lifting pipe 2, it will not come into contact with the inner wall of the lifting pipe 2, and the friction between the alumina powder and the inner wall of the lifting pipe 2 can be completely avoided.

[0034] Please see Figure 1 and Figure 2 In some embodiments, the aluminum electrolysis small air-lift dust collector may also include a flexible hose 5. One end of the flexible hose 5 is sleeved on the end of the ceramic wear-resistant tube 3 located outside the housing 1, so that the flexible hose 5 is connected to the ceramic wear-resistant tube 3, while the other end of the flexible hose 5 is connected to the equipment of the subsequent processing stage, so that the alumina powder conveyed through the ceramic wear-resistant tube 3 can be seamlessly conveyed to the equipment of the subsequent processing stage through the flexible hose 5, maintaining the continuity and efficiency of the entire conveying process.

[0035] When the ceramic wear-resistant tube 3 wears down due to prolonged use and needs to be replaced, the introduction of the hose 5 makes the replacement process exceptionally simple and convenient. Simply detach the hose 5 from the ceramic wear-resistant tube 3 to disconnect it from subsequent equipment. This eliminates the need for complex disassembly of the entire conveying system, allowing workers to quickly replace the ceramic wear-resistant tube 3 and significantly improving work efficiency.

[0036] Please see Figure 1 In some embodiments, the aluminum electrolysis small air-lift dust collector may also include a support structure 6, which may be fixedly installed inside the housing 1.

[0037] Specifically, the support structure 6 can include a support plate 61 fixed to the inner side wall of the box body 1. In this embodiment, the support structure 6 includes two support plates 61 fixed to the inner side wall of the box body 1 along the length direction of the box body 1. Each support plate 61 is provided with a mounting hole, and the mounting holes on the two support plates 61 are coaxially arranged. The part of the material lifting pipe 2 located inside the box body 1 is inserted into the two mounting holes, so that the material lifting pipe 2 is fixedly connected with the support plate 61, in particular, the material lifting pipe 2 is welded with the support plate 61, so that the support structure 6 plays a supporting and fixing role for the material lifting pipe 2 and other internal components.

[0038] Please refer to Figure 1 In some embodiments, one end of the material lifting pipe 2 located outside the box body 1 is provided with a connecting hole. Similarly, one end of the ceramic wear-resistant pipe 3 is also provided with a connecting hole, so that when the ceramic wear-resistant pipe 3 is sleeved into the material lifting pipe 2, the end of the ceramic wear-resistant pipe 3 provided with the connecting hole can smoothly extend to the outside of the box body 1, so that the connecting piece 4 can be inserted into the connecting holes on the material lifting pipe 2 and the ceramic wear-resistant pipe 3 at the same time, tightly fixing the material lifting pipe 2 and the ceramic wear-resistant pipe 3 together. This connection method is not only simple, but also very firm, which ensures the stability and continuity of the aluminum oxide powder during the conveying process.

[0039] When the ceramic wear-resistant pipe 3 needs to be replaced due to long-term use and wear, the staff need not enter the inside of the box body 1, but only need to operate outside the box body 1. They can conveniently disassemble the connecting piece 4 to separate the ceramic wear-resistant pipe 3 from the material lifting pipe 2. In this way, the replacement of the ceramic wear-resistant pipe 3 becomes very simple and fast, greatly saving the maintenance time and cost.

[0040] Please refer to Figure 1 and Figure 2 In some embodiments, the aluminum electrolysis small gas lifting dust collector can also include a gas lifting tank 7, which can be installed at the bottom of the box body 1, and the contour shape of the gas lifting tank 7 is the same as that of the bottom of the box body 1, so that the gas lifting tank 7 and the box body 1 can be seamlessly connected. The gas lifting tank 7 can be provided with a gas supply pipe 8, and the gas supply pipe 8 is arranged on the gas lifting tank 7 along the length direction of the box body 1. One end of the gas supply pipe 8 extends to the outside of the gas lifting tank 7, which is convenient for connecting with the external gas source, and the other end of the gas supply pipe 8 extends to the inside of the box body 1, and the gas supply pipe 8 can be arranged opposite to the ceramic wear-resistant pipe 3, so that the airflow can smoothly enter the inside of the box body 1 through the gas supply pipe 8, and form an effective airflow circulation with the ceramic wear-resistant pipe 3.

[0041] In actual operation, the external gas source provides gas flow to the inside of the box 1 through the gas supply pipe 8, and the gas flow forms a certain flow pattern inside the box 1, which helps to extract particles such as alumina powder from the box 1 and transport them through the ceramic wear-resistant pipe 3. This design not only improves the dust removal efficiency of the aluminum electrolysis small gas extraction dust collector, but also ensures the stability and continuity of the alumina powder during transportation.

[0042] In addition, the combined design of the gas extraction box 7 and the gas supply pipe 8 also enhances the flexibility and adaptability of the aluminum electrolysis small gas extraction dust collector. By adjusting the flow and direction of the gas flow of the gas supply pipe 8, precise control of the gas flow environment inside the box 1 can be achieved to adapt to different working requirements and environmental conditions.

[0043] Referring to Figure 1 and Figure 2 In some embodiments, the top of the gas extraction box 7 can be provided with a first flange plate 71, and the bottom of the box 1 can be provided with a second flange plate 12. When the gas extraction box 7 is arranged at the bottom of the box 1, the first flange plate 71 and the second flange plate 12 can be fixedly connected by a plurality of bolts 9, so that the gas extraction box 7 is fixedly connected with the box 1, and the gas extraction box 7 is also convenient to install and disassemble.

[0044] Referring to Figure 1 In some embodiments, during the use of the aluminum electrolysis small gas extraction dust collector, the gas supply pipe 8 is responsible for introducing external gas flow into the gas extraction box 7 to form effective gas flow circulation, helping the aluminum electrolysis small gas extraction dust collector to separate and extract dust particles. However, impurities and particles in the external environment may enter the gas supply pipe 8 with the gas flow. If not treated, these impurities may block the pipe and affect the smoothness of the gas flow, and even cause damage to the internal components of the aluminum electrolysis small gas extraction dust collector.

[0045] Specifically, one end of the gas supply pipe 8 located outside the gas extraction box 7 can be provided with a filter 81. The filter 81 can be a leak-proof filter screen. The main function of the leak-proof filter screen is to filter out impurities and particles in the external gas flow entering the gas supply pipe 8, ensuring that only pure gas flow can enter the inside of the gas extraction box 7. This can effectively protect the internal structure and components of the aluminum electrolysis small gas extraction dust collector, prolong its service life, and ensure the normal operation and high efficiency of the aluminum electrolysis small gas extraction dust collector.

[0046] Referring to Figure 2 In some embodiments, the box 1 can be provided with a material extraction port 13 and an adjusting plate 14. The adjusting plate 14 can be rotatably installed on one side of the material extraction port 13, and the adjusting plate 14 can be rotated to block at least part of the material extraction port 13.

[0047] Specifically, the material lifting port 13 can be in communication with the chute on the aluminum electrolysis production line, so that the aluminum oxide powder containing impurities in the chute can smoothly enter the inside of the box 1. After the aluminum oxide powder enters the box 1, the aluminum electrolysis small gas lifting dust collector can quickly and effectively separate the impurities therein, thereby ensuring the purity and quality of the aluminum oxide powder.

[0048] In the case of uneven material lifting of the aluminum electrolysis small gas lifting dust collector, the staff can control the opening size of the material lifting port 13 by adjusting the position and angle of the adjusting plate 14 according to the actual situation, thereby realizing accurate control of the speed and flow of the aluminum oxide powder entering the inside of the box 1, i.e., manually adjusting the size of the material lifting. This not only ensures the uniformity of the fluorine content of the aluminum oxide, but also helps to effectively control the fluorine content of the aluminum oxide on site, further improving the stability and efficiency of aluminum electrolysis production.

[0049] In some embodiments, the outer side wall of the material lifting pipe 2 is provided with a wear-resistant and corrosion-resistant coating. The main function of the wear-resistant coating is to further enhance the wear resistance of the material lifting pipe 2, so that the material lifting pipe 2 can resist the friction and impact of the aluminum oxide powder during the transportation of the aluminum oxide powder, further prolonging the service life of the material lifting pipe 2. The corrosion-resistant coating mainly plays a role in preventing the outer side wall of the material lifting pipe 2 from being eroded by chemical substances, protecting the outer side wall of the material lifting pipe 2 from damage.

[0050] Specifically, the wear-resistant coating can be made of high-hardness, high-wear-resistant ceramic materials or special alloys, which can effectively resist friction and wear caused by the flow of aluminum oxide powder in the box 1. The corrosion-resistant coating can contain corrosion-resistant chemicals or polymers, which can form a protective layer to isolate the outer wall of the material lifting pipe 2 from contact with external chemical substances and prevent corrosion.

[0051] In addition, the design of such a coating also needs to consider factors such as the compatibility of the material with the material of the material lifting pipe 2, the adhesion of the coating, and the influence of the coating on the flow of aluminum oxide powder, to ensure that the coating can be tightly adhered to the side wall of the material lifting pipe 2 and not easily fall off, and will not hinder the flow of aluminum oxide powder.

[0052] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An aluminum electrolytic mini-puffer dust collector characterized by, It comprises: a box (1) with a dust removal cavity (11) formed inside; a material lifting pipe (2) penetrating the top of the box (1), one end of which communicates with the dust removal cavity (11) and the other end of which extends out of the box (1); a ceramic wear-resistant pipe (3) sleeved in the material lifting pipe (2) and detachably connected with the material lifting pipe (2) through a connecting piece (4) so that the ceramic wear-resistant pipe (3) communicates with the dust removal cavity (11).

2. The aluminum electrolytic mini-pot dust collector of claim 1, wherein, The ceramic wear-resistant pipe (3) is interference-fitted in the material lifting pipe (2) and the opposite ends of the ceramic wear-resistant pipe (3) extend beyond the opposite ends of the material lifting pipe (2).

3. The aluminum electrolytic mini-pot dust collector of claim 2, wherein, It further comprises a hose (5) in communication with the end of the ceramic wear-resistant pipe (3) extending out of the box (1).

4. The aluminum electrolytic mini-pot dust collector of claim 1, wherein, It further comprises a support structure (6) arranged inside the box (1) and comprising a support plate (61) fixed to the inner side wall of the box (1), the support plate (61) being provided with a mounting hole in which the material lifting pipe (2) is inserted and fixed.

5. The aluminum electrolytic mini-pot dust collector of claim 1, wherein, The end of the material lifting pipe (2) extending out of the box (1) is connected with the end of the ceramic wear-resistant pipe (3) extending out of the box (1) through the connecting piece (4).

6. The aluminum electrolytic mini-pot dust collector of claim 1, wherein, It further comprises a gas lifting tank (7) mounted at the bottom of the box (1) and penetrating a gas supply pipe (8), one end of which is located outside the gas lifting tank (7) and the other end of which is located inside the box (1) and arranged opposite to the ceramic wear-resistant pipe (3).

7. The aluminum electrolytic mini-pot dust collector of claim 6, wherein, The top of the gas lifting tank (7) is provided with a first flange plate (71) and the bottom of the box (1) is provided with a second flange plate (12), the first flange plate (71) being connected with the second flange plate (12) through a plurality of bolts (9).

8. The aluminum electrolytic mini-pot dust collector of claim 6, wherein, The end of the gas supply pipe (8) extending out of the gas lifting tank (7) is provided with a filter piece (81).

9. The aluminum electrolytic mini-pot dust collector of claim 1, wherein, The box (1) is provided with a material lifting opening (13) and an adjusting plate (14) rotatably mounted on one side of the material lifting opening (13) and capable of being rotated to shield at least part of the material lifting opening (13).

10. The aluminum electrolytic mini-pot dust collector of claim 1, wherein, The outer side wall of the material lifting pipe (2) is provided with a wear-resistant and corrosion-resistant coating.

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