Device for cleaning accumulated materials at feed opening of aluminum electrolysis cell

Abstract

The invention provides a device for cleaning accumulated materials at a feed opening of an aluminum electrolysis cell, which comprises a collecting container, an air inlet port and an air outlet port, and the air inlet port is communicated with the air outlet port; the air inlet pipe is connected to the air inlet connector and used for conveying compressed air; the air outlet pipe is connected to the air outlet connector; the feeding end of the material collecting pipe is used for being arranged at the material accumulation position in the electrolytic bath, the discharging end of the material collecting pipe communicates with the air inlet pipe, and compressed air output by the air inlet pipe provides a negative pressure environment for the material collecting pipe; the collecting bag is arranged in the collecting container and connected to the air inlet connector, and the collecting bag has air permeability and is used for intercepting accumulated materials. The accumulated materials are rapidly and cleanly collected, related process conditions are timely adjusted according to the accumulated materials, the labor intensity of workers is effectively reduced, waste of raw materials is reduced, deposition at the furnace bottom of the electrolytic bath caused by instantaneous falling of the accumulated materials is avoided, and normal production process conditions, heat balance of the electrolytic bath and material balance of the whole process are kept.

Description

Technical Field

[0001] The present disclosure relates to the technical field of aluminum electrolysis, and in particular to a device for cleaning accumulated material at a feed outlet of an aluminum electrolysis cell. Background Art

[0002] In the related technology, shelling and feeding is a crucial link in the aluminum electrolysis process. In industry, alumina is generally fed into the electrolytic cell by frequent processing and less feeding. However, in the electrolytic aluminum production process such as replacing anodes, updating vulnerable shelling electrical systems, and shelling system jams, alumina accumulation at the feeding port is inevitable. The generation of alumina accumulation will inevitably destroy the thermal balance of the electrolytic cell, destroy the system material balance, increase the sedimentation at the bottom of the furnace, increase the unit consumption of alumina, and affect the process personnel's analysis of current efficiency due to the difference between the actual amount of alumina discharged and the amount consumed.

[0003] When the above situation occurs, companies often adopt the method of regularly regularizing the shell surface, and use a wheelbarrow to shovel the redundant crushed materials around the discharge port and the alumina accumulated on the anode surface to the crushing area. The shoveled alumina and crushed material blocks cannot enter the discharge system through the material beating method, and can only be used as covering materials in the end. This will cause the thermal balance of the electrolytic cell to be destroyed, and the material balance of the entire process to be destroyed, and the manual processing method is time-consuming and labor-intensive.

[0004] Therefore, it is necessary to propose a device for cleaning material accumulation at the discharge port of an aluminum electrolytic cell to at least partially solve the problems existing in the prior art. Summary of the invention

[0005] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, the present invention provides a device for cleaning material accumulation at a discharge port of an aluminum electrolysis cell.

[0007] In view of this, according to an embodiment of the present disclosure, a device for cleaning material accumulation at a feed opening of an aluminum electrolysis cell is proposed, comprising:

[0008] A collection container, wherein the collection container is provided with an air inlet interface and an air outlet interface, and the air inlet interface is connected to the air outlet interface;

[0009] An air intake pipe connected to the air intake interface, the air intake pipe is used to transport compressed air;

[0010] An air outlet pipe connected to the air outlet interface;

[0011] A material collecting pipe, wherein the feed end of the material collecting pipe is used to be arranged at the material accumulation place in the electrolytic cell, and the discharge end is connected to the air inlet pipe, and the compressed air output by the air inlet pipe provides a negative pressure environment for the material collecting pipe;

[0012] A collecting bag is arranged in the collecting container and connected to the air inlet interface. The collecting bag is air-permeable and is used to intercept the accumulated material.

[0013] In a feasible implementation, it also includes:

[0014] A first stop valve is provided on the air inlet pipe and is located between the inlet of the air inlet pipe and the material collecting pipe;

[0015] The second stop valve is arranged on the air outlet pipe.

[0016] In a feasible implementation, it also includes:

[0017] The adjusting component is arranged on the material collecting tube and is used for adjusting the position of the material collecting tube in the electrolytic cell.

[0018] In a feasible implementation manner, the above-mentioned adjustment component includes:

[0019] A driving member, wherein the material collecting tube is a telescopic tube, and the driving member is used to adjust the telescopic length of the telescopic tube;

[0020] A detection member, used for detecting the position of deposits in the electrolytic cell;

[0021] The controller, the driving member and the detecting member are electrically connected to the controller respectively, and the controller is used to control the driving member to adjust the telescopic length of the telescopic tube according to the position of the deposit in the electrolytic cell detected by the detecting member.

[0022] In a feasible embodiment, the controller is used to control the driving member to adjust the feed end of the material collecting pipe to be located at the bottom of the deposit in the electrolytic cell or within 10 mm above the deposit.

[0023] In a feasible implementation, the collection bag is a glass fiber bag, and the filtration accuracy of the glass fiber bag is greater than or equal to 1.5 μm.

[0024] In a feasible implementation manner, the material collecting pipe is made of stainless steel, and the wall thickness of the material collecting pipe is 2 mm to 3 mm.

[0025] In a feasible implementation manner, a collecting portion is formed at the air intake pipe corresponding to the material collecting pipe, and the pipe diameter at the collecting portion is larger than the pipe diameter at other positions of the air intake pipe.

[0026] In a feasible implementation manner, the air inlet pipe and / or the air outlet pipe are made of a pressure-resistant rubber material. The collection container comprises:

[0027] A shell, wherein the collecting bag is disposed inside the shell;

[0028] A cover body, which is disposed on the shell and can open or close the accommodating space of the shell;

[0029] The sealing ring is arranged at the connection between the shell and the cover.

[0030] Compared with the prior art, the present disclosure at least includes the following beneficial effects: the device for cleaning the material accumulation at the feed port of the aluminum electrolytic cell provided in the embodiment of the present disclosure is provided with a collection container, an air inlet pipe, an air outlet pipe, a material collection pipe and a collection bag. Among them, the collection container is provided with an air inlet interface and an air outlet interface, and the air inlet interface and the air outlet interface are connected to form an air passage. The air inlet pipe is inserted into the air inlet interface, and the air inlet pipe can be connected to the air source to transmit the compressed air output by the air source to the air inlet interface through the air inlet pipe. The air outlet pipe is connected to the air outlet interface to release the compressed air in the collection container to avoid the accumulation of compressed air in the collection container and causing the pressure to increase. The material collection pipe is provided with a feed end and a discharge end. Among them, the feed end is used to be arranged at the accumulation of materials in the electrolytic cell. The accumulation of materials may include alumina and redundant crushed materials. The discharge end is connected to the air inlet pipe, and when the air inlet pipe transports compressed air, a negative pressure environment can be provided for the material collection pipe, so that the accumulation of materials in the electrolytic cell is extracted and transported to the collection container through the air inlet pipe. The collecting bag can be arranged in the collecting container and connected to the air inlet interface, and the collecting bag is air permeable. With such arrangement, when the accumulated materials and compressed air are transported to the collecting bag along the air inlet interface through the air inlet pipe, the collecting bag can intercept the accumulated materials, and the compressed air passes through the collecting bag and is released through the air outlet pipe, so that the accumulated materials are collected by the collecting bag, and the accumulated materials can be conveniently obtained by taking out the collecting bag, thereby realizing quick and clean collection of accumulated materials, and timely adjusting relevant process conditions according to the amount of accumulated materials, effectively reducing manual labor intensity, reducing the waste of raw materials, and not causing precipitation at the bottom of the electrolytic cell due to the instantaneous fall of accumulated materials, which is conducive to maintaining normal production process conditions, maintaining the thermal balance of the electrolytic cell and the material balance of the entire process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0032] Figure 1 A schematic structural diagram of a device for cleaning material accumulation at a discharge port of an aluminum electrolysis cell according to an embodiment of the present disclosure.

[0033] in, Figure 1 The corresponding relationship between the reference numerals and the component names is as follows:

[0034] 110 collecting container, 111 air inlet interface, 112 shell, 113 cover body, 120 air inlet pipe, 121 collecting part, 122 compressed gas interface, 130 air outlet pipe, 131 escaping gas interface, 140 material collecting pipe, 150 first stop valve, 160 second stop valve. DETAILED DESCRIPTION

[0035] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0036] In the relevant technology, shelling and unloading is a crucial link in the aluminum electrolysis process. In industry, alumina is generally fed into the electrolytic cell by frequent processing and less feeding. The replacement of new anodes in production will cause problems such as low local temperature and poor electrolyte fluidity. After multiple consecutive unloading cycles, the alumina cannot completely enter the electrolyte, which will cause problems such as head pack blockage, alumina accumulation, and sudden effect. Similarly, in production, if the alumina material box has sand holes due to long-term wear and tear, it will leak material. If the shelling consumables are replaced or the unloading cylinder is damaged, the material box needs to be lifted out for replacement. At this time, the alumina in the material box is completely emptied, and fresh alumina will accumulate at the unloading port. In production, the electrolytic cell is operated cold, the electrolyte shrinks horizontally, and the shell surface is thick at the fire eye. Under constant wind pressure, it is difficult for the shelling hammer to break the electrolyte shell surface and cause blockage. If the on-site inspectors do not find it in time, the unloading system will continue to add materials and material accumulation will occur. For example, during the load reduction period, the electrolyte solubility capacity decreases, and single-point blockage is prone to occur; during the increase in air volume, the wind pressure decreases, and blockages often occur.

[0037] When the above situation occurs, companies often adopt the method of regularly regularizing the shell surface, and use a wheelbarrow to shovel the redundant crushed materials around the discharge port and the alumina accumulated on the anode surface to the crushing area. The shoveled alumina and crushed material blocks cannot enter the discharge system through the material beating method, and can only be used as covering material in the end. This will destroy both the thermal balance of the electrolytic cell and the material balance of the entire process, and lead to an abnormal surplus of covering material.

[0038] In summary, according to the current electrolytic aluminum production process such as pole replacement, updating of vulnerable shelling electrical systems, and jamming of shelling systems, the accumulation of alumina at the feed port is an inevitable phenomenon. The generation of alumina accumulation will inevitably destroy the thermal balance of the electrolytic cell, destroy the system material balance, increase the sedimentation at the bottom of the furnace, increase the unit consumption of alumina, and affect the process personnel's analysis of current efficiency due to the difference between the actual discharge amount and the consumption of alumina. Therefore, the embodiment of the present application proposes a device for cleaning the accumulation of aluminum electrolytic cell feed port to solve the above-mentioned technical problems.

[0039] like Figure 1 As shown, according to an embodiment of the present disclosure, a device for cleaning material accumulation at the discharge port of an aluminum electrolytic cell is proposed, comprising: a collecting container 110, the collecting container 110 is provided with an air inlet interface 111 and an air outlet interface, the air inlet interface 111 is connected to the air outlet interface; an air inlet pipe 120, connected to the air inlet interface 111, the air inlet pipe 120 is used to transport compressed air; an air outlet pipe 130, connected to the air outlet interface; a material collecting pipe 140, the feed end of the material collecting pipe 140 is used to be arranged at the material accumulation location in the electrolytic cell, and the discharge end is connected to the air inlet pipe 120, the compressed air output by the air inlet pipe 120 provides a negative pressure environment for the material collecting pipe 140; a collecting bag, arranged in the collecting container 110 and connected to the air inlet interface 111, the collecting bag is air permeable and is used to intercept the accumulated material.

[0040] It can be understood that the device for cleaning the material accumulation at the feed port of the aluminum electrolytic cell provided in the embodiment of the present disclosure is provided with a collection container 110, an air inlet pipe 120, an air outlet pipe 130, a material collection pipe 140 and a collection bag. Among them, the collection container 110 is provided with an air inlet interface 111 and an air outlet interface, and the air inlet interface 111 and the air outlet interface are connected to form an air passage. The air inlet pipe 120 is inserted into the air inlet interface 111, and the air inlet pipe 120 can be connected to the air source to transmit the compressed air output by the air source to the air inlet interface 111 through the air inlet pipe 120. The air outlet pipe 130 is connected to the air outlet interface to release the compressed air in the collection container 110 to avoid the accumulation of compressed air in the collection container 110 and cause the pressure to increase. The material collection pipe 140 is provided with a feed end and a discharge end. Among them, the feed end is used to be set at the accumulation of materials in the electrolytic cell. The accumulated materials may include alumina and redundant crushed materials. The discharge end is connected to the air inlet pipe 120. When the air inlet pipe 120 delivers compressed air, it can provide a negative pressure environment for the material collection pipe 140, so that the accumulated material of the electrolytic cell is extracted and delivered to the collection container 110 through the air inlet pipe 120. The collection bag can be arranged in the collection container 110 and connected to the air inlet interface 111, and the collection bag has air permeability. In this way, when the accumulated material and compressed air are delivered to the collection bag along the air inlet interface 111 through the air inlet pipe 120, the collection bag can intercept the accumulated material, and the compressed air passes through the collection bag and is released through the air outlet pipe 130, so that the accumulated material is collected by the collection bag, and the accumulated material can be conveniently obtained by taking out the collection bag, realizing fast and clean collection of accumulated material, and timely adjusting relevant process conditions according to the amount of accumulated material, and effectively reducing the labor intensity and the waste of raw materials, and the accumulation of the electrolytic cell will not cause precipitation at the bottom of the furnace due to the instantaneous fall of the accumulated material, which is conducive to maintaining normal production process conditions, maintaining the thermal balance of the electrolytic cell and the material balance of the entire process.

[0041] For example, the air inlet pipe 120 may be provided with a compressed gas interface 122 to connect the compressed gas source to the air inlet pipe 120 through the compressed gas interface 122. The air outlet pipe 130 may be provided with an escaped gas interface 131, and the compressed gas in the air outlet pipe 130 may be discharged through the escaped gas interface 131 for subsequent processing.

[0042] In some examples, such as Figure 1 As shown, the above-mentioned device for cleaning material accumulation at the discharge port of the aluminum electrolytic cell also includes: a first stop valve 150, which is arranged on the above-mentioned air inlet pipe 120 and is located between the inlet of the above-mentioned air inlet pipe 120 and the above-mentioned material collecting pipe 140; and a second stop valve 160, which is arranged on the above-mentioned air outlet pipe 130.

[0043] It is understandable that the device for cleaning the material accumulation at the discharge port of the aluminum electrolytic cell is also provided with a first stop valve 150 and a second stop valve 160. The first stop valve 150 can be provided on the air inlet pipe 120 to control the opening and closing state of the air inlet pipe 120. Specifically, the first stop valve 150 is located between the inlet of the air inlet pipe 120 and the material collection pipe 140. The second stop valve 160 can be provided on the air outlet pipe 130 to control the opening and closing state of the air outlet pipe 130.

[0044] It should be noted that the steps of using the device for cleaning the material accumulation at the discharge port of the aluminum electrolytic cell provided by the embodiment of the present disclosure are as follows: (1) open the collecting container 110, install the collecting bag in the collecting container 110, and connect it to the air inlet interface 111; (2) stably place the collecting container 110 next to the area to be cleaned of the electrolytic cell, adjust the position of the material collecting pipe 140 at the material accumulation location in the electrolytic cell, connect the air inlet pipe 120 to the air inlet interface 111, and connect the air outlet pipe 130 to the air outlet interface; (3) open the second stop valve 160 and the first stop valve 150 in sequence, start the compressed air source, and the negative pressure generated by the compressed air flow will pump the accumulated material in the area to be cleaned of the electrolytic cell through the material collecting pipe 140 to the collecting container. 110, and at the same time, gradually move the material collection pipe 140 according to the reduction of the accumulated materials in the area to be cleaned, until all the accumulated materials are cleaned up; (4) After the cleaning is completed, remove the material collection pipe 140, close the first stop valve 150 and the second stop valve 160 in turn, and open the air inlet interface 111 and the air outlet interface, place the collection container 110 in a safe area and remove the collection bag, weigh the weight of the collected accumulated materials, adjust the relevant control process conditions in time according to the weight of the collected accumulated materials, and store the collected accumulated materials in a designated location; (5) According to the weight of alumina in the collected accumulated materials and the actual situation of alumina concentration in the electrolytic cell, adjust the material unloading frequency until the normal alumina concentration requirement is restored.

[0045] In some examples, the device for cleaning material accumulation at the discharge port of an aluminum electrolytic cell further includes: an adjusting component, disposed on the material collecting pipe 140, for adjusting the position of the material collecting pipe 140 in the electrolytic cell.

[0046] It is understandable that the device for cleaning the material accumulation at the discharge port of the aluminum electrolytic cell is also provided with an adjustment component. Specifically, the adjustment component can be provided on the material collection pipe 140, and the position of the material collection pipe 140 in the electrolytic cell can be adjusted by the adjustment component, so as to better collect the accumulated material in the electrolytic cell, reduce the manual labor, and improve the work efficiency.

[0047] In some examples, the adjustment component includes: a driving member, the material collecting tube 140 is a telescopic tube, and the driving member is used to adjust the telescopic length of the telescopic tube; a detecting member, used to detect the position of the deposit in the electrolytic cell; a controller, the driving member and the detecting member are electrically connected to the controller respectively, and the controller is used to control the driving member to adjust the telescopic length of the telescopic tube according to the position of the deposit in the electrolytic cell detected by the detecting member.

[0048] It is understandable that the adjustment component may be provided with a driving member, a detection member and a controller. Among them, the material collection tube 140 may use a telescopic tube to facilitate length adjustment. The driving member is connected to the telescopic tube to adjust the telescopic length of the telescopic tube. The driving member may use a sliding mechanism, etc. The detection member detects the situation in the electrolytic cell to determine the position and height of the accumulated material at the discharge port. The detection member may use high-definition photography equipment, etc. The controller is electrically connected to the detection member and the driving member. The detection member may send the detected position information of the accumulated material to the controller. The controller controls the driving member to adjust the telescopic length of the telescopic tube according to the position information of the accumulated material, and then adjusts the relative position of the material collection tube 140 to the electrolytic cell. The adjustment process is realized without human intervention, ensuring safety, reducing manual labor, and improving work efficiency.

[0049] In some examples, the controller is used to control the driving member to adjust the feed end of the material collecting tube 140 to be located at the bottom of the deposit in the electrolytic cell or within 10 mm above the deposit.

[0050] It can be understood that the feed end of the material collecting tube 140 can be set to be located at the bottom of the accumulation in the electrolytic cell or within 10 mm above the accumulation as a set distance. Through the accumulation material position information detected by the detection part, the controller controls the driving part to adjust the position of the material collecting tube 140 to ensure that the distance between the feed end of the material collecting tube 140 and the accumulation material meets the set distance, thereby improving reliability.

[0051] In some examples, the collection bag is a glass fiber bag, and the filtration accuracy of the glass fiber bag is greater than or equal to 1.5 μm.

[0052] It is understandable that the collection bag can be a glass fiber bag with a filtration accuracy greater than or equal to 1.5 μm, so that all the accumulated materials can be collected as much as possible, ensuring the collection accuracy and preventing the accumulated material dust from entering the exhaust pipe 130 through the collection bag.

[0053] For example, the collection container 110 may be cylindrical, and may be made of stainless steel to improve reliability, and may have a diameter of 70 cm to 80 cm, a wall thickness of 3 mm to 6 mm, and a height of 150 cm to 170 cm. The maximum opening diameter of the collection bag is 50 cm to 60 cm, and the maximum opening height is 170 cm to 200 cm. The collection bag is detachably fixed to the air inlet interface 111.

[0054] In some examples, the material collecting tube 140 is made of stainless steel, and the wall thickness of the material collecting tube 140 is 2 mm to 3 mm.

[0055] It is understandable that the material collection pipe 140 can be made of stainless steel with a wall thickness of 2 mm to 3 mm, so as to reduce the degree of wear and rust during the process of collecting the accumulated materials and extend the service life.

[0056] Exemplarily, the outer diameter of the material collecting pipe 140 is 25 mm, and the wall thickness is 2.5 mm.

[0057] In some examples, such as Figure 1 As shown, a collecting portion 121 is formed at a position of the air intake pipe 120 corresponding to the material collecting pipe 140 , and the pipe diameter at the collecting portion 121 is larger than the pipe diameter at other positions of the air intake pipe 120 .

[0058] It can be understood that the air intake pipe 120 forms a collecting portion 121 for the material collecting pipe 140, the material collecting pipe 140 is connected to the collecting portion 121, and the material collecting pipe 140 is located below the collecting portion 121. The diameter of the collecting portion 121 is larger than the diameter of the other positions of the air intake pipe 120 to improve the collection efficiency and ensure the collection effect.

[0059] In some examples, such as Figure 1 As shown, the air inlet pipe 120 and / or the air outlet pipe 130 are made of pressure-resistant rubber material.

[0060] It is understandable that the air inlet pipe 120 and the air outlet pipe 130 need to transport compressed gas, and can be made of pressure-resistant rubber material to ensure pressure resistance. For example, the outer diameter of the air inlet pipe 120 can be 50 mm, the wall thickness can be 3 mm, and the outer diameter of the air outlet pipe 130 can be 100 mm, the wall thickness can be 3 mm.

[0061] In some examples, such as Figure 1 As shown, the collection container 110 includes: a shell 112, in which the collection bag is arranged; a cover 113, which is covered on the shell 112 and can open or close the accommodating space of the shell 112; and a sealing ring, which is arranged at the connection between the shell 112 and the cover 113.

[0062] It is understandable that the collection container 110 may be provided with a shell 112 and a cover 113, and the cover 113 may be covered on the shell 112 by snapping to open or close the accommodation space of the shell 112, and the collection bag may be placed in the accommodation space. A sealing ring may be provided at the connection between the shell 112 and the cover 113 to avoid leakage, ensure that the gas can only enter through the air inlet interface 111 and be released from the air outlet interface, and improve reliability.

[0063] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0064] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0065] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A device for cleaning the material accumulation at the feeding port of an aluminum electrolytic cell, It is characterized in that include: A collection container, wherein the collection container is provided with an air inlet interface and an air outlet interface, and the air inlet interface is connected to the air outlet interface; An air intake pipe, connected to the air intake interface, and used for conveying compressed air; An air outlet pipe connected to the air outlet interface; A material collecting pipe, wherein the feeding end of the material collecting pipe is used to be arranged at the material accumulation place in the electrolytic cell, and the discharging end is connected to the air inlet pipe, and the compressed air output by the air inlet pipe provides a negative pressure environment for the material collecting pipe; A collecting bag is arranged in the collecting container and connected to the air inlet interface. The collecting bag is air-permeable and is used to intercept the accumulated material.

2. The device for cleaning material accumulation at the feed opening of an aluminum electrolytic cell according to claim 1, It is characterized in that Also includes: A first stop valve is arranged on the air inlet pipe and is located between the inlet of the air inlet pipe and the material collecting pipe; The second stop valve is arranged on the air outlet pipe.

3. The device for cleaning material accumulation at the feed opening of an aluminum electrolytic cell according to claim 1, It is characterized in that Also includes: An adjusting component is arranged on the material collecting tube and is used for adjusting the position of the material collecting tube in the electrolytic cell.

4. The device for cleaning material accumulation at the feed opening of an aluminum electrolytic cell according to claim 3, It is characterized in that The adjustment component comprises: A driving member, wherein the material collecting tube is a telescopic tube, and the driving member is used to adjust the telescopic length of the telescopic tube; A detection member, used for detecting the position of deposits in the electrolytic cell; The controller is electrically connected to the driving member and the detecting member, respectively, and the controller is used to control the driving member to adjust the telescopic length of the telescopic tube according to the position of the deposit in the electrolytic cell detected by the detecting member.

5. The device for cleaning material accumulation at the feed opening of an aluminum electrolytic cell according to claim 4, It is characterized in that The controller is used to control the driving member to adjust the feed end of the material collecting pipe to be located at the bottom of the deposit in the electrolytic cell or within 10 mm above the deposit.

6. The device for cleaning material accumulation at the feed opening of an aluminum electrolytic cell according to claim 1, It is characterized in that The collecting bag is a glass fiber bag, and the filtering accuracy of the glass fiber bag is greater than or equal to 1.5 μm.

7. The device for cleaning material accumulation at the feed opening of an aluminum electrolytic cell according to claim 1, It is characterized in that The material collecting pipe is made of stainless steel, and the wall thickness of the material collecting pipe is 2 mm to 3 mm.

8. The device for cleaning material accumulation at the feed opening of an aluminum electrolytic cell according to claim 1, It is characterized in that A collecting portion is formed on the air intake pipe at a position corresponding to the material collecting pipe, and the pipe diameter at the collecting portion is larger than the pipe diameter at other positions of the air intake pipe.

9. The device for cleaning material accumulation at the feed opening of an aluminum electrolytic cell according to claim 1, It is characterized in that The air inlet pipe and / or the air outlet pipe are made of pressure-resistant rubber material.

10. The device for cleaning material accumulation at the feed opening of an aluminum electrolytic cell according to claim 1, It is characterized in that The collection container comprises: a shell, wherein the collecting bag is disposed inside the shell; A cover body, which is disposed on the shell and can open or close the accommodating space of the shell; A sealing ring is arranged at the connection between the shell and the cover.

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