A dust filter device for copper smelting

Abstract

The application provides a smoke dust filtering device for copper smelting, which comprises a filtering barrel horizontally arranged on a base, an inlet and an exhaust port arranged at two ends of the filtering barrel respectively, a filtering screen arranged in the filtering barrel, and a first opening arranged on the bottom wall of the filtering barrel; the cleaning module comprises an air pump and a mounting disc, the mounting disc is arranged on the side of the exhaust port of the filtering barrel and located in the space on one side of the filtering screen, a plurality of nozzles facing the filtering screen are arranged on the mounting disc, the nozzles are communicated with the air pump, wherein the high-pressure gas output by the air pump can be impacted on the filtering screen through the nozzles to blow off the smoke dust adhered to the filtering screen; the blown-off smoke dust enters the collecting module for collection through the first opening; the smoke dust filtering device for copper smelting can effectively improve the cleaning efficiency without dismounting the equipment when cleaning the filtering screen, and the cleaned smoke dust can be discharged from the filtering barrel and collected by the collecting module, thereby avoiding the accumulation in the filtering barrel.

Description

Technical Field

[0001] This invention relates to the field of metal smelting technology, and in particular to a dust filtration device for copper smelting. Background Technology

[0002] Copper smelting is mainly divided into two methods: pyrometallurgical smelting and hydrometallurgical smelting. Pyrometallurgical smelting has advantages such as strong raw material adaptability, high production efficiency, low energy consumption, and high metal recovery rate, and has always been the mainstream process in the copper smelting industry. During the smelting and blowing of copper concentrate, a large amount of valuable metals such as copper, lead, and zinc are discharged with the flue dust. To avoid pollution, a flue dust treatment system is required, and the collected flue dust can recover these metals.

[0003] Dust removal methods include electrostatic precipitation and filtration. Electrostatic precipitation is highly efficient, but its cost is much higher than that of filtration. Filtration is less expensive, but dust easily accumulates on the filter screen, requiring regular cleaning to prevent clogging. Currently, regular cleaning typically involves stopping the machine and removing the filter screen, which is inefficient. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a dust filtration device for copper smelting, so as to solve the problem that the existing filter-type dust treatment system usually needs to be shut down and the filter screen removed for cleaning during regular cleaning, which is inefficient.

[0005] This invention provides a dust filtration device for copper smelting, comprising:

[0006] A filter barrel is placed horizontally on a base. The filter barrel has a smoke inlet and an exhaust outlet at its two ends, a filter screen inside, and a first opening on the bottom wall of the filter barrel.

[0007] The cleaning module includes an air pump and a mounting plate. The mounting plate is located on the exhaust port side of the filter barrel and in the space on one side of the filter screen. The mounting plate is provided with multiple nozzles facing the filter screen. The nozzles are connected to the air pump. The high-pressure gas output by the air pump can impact the filter screen through the nozzles to blow off the dust adhering to the filter screen.

[0008] A collection module, connected to the first opening, is used to collect the blown-off smoke and dust through the first opening.

[0009] Optionally, the filter barrel is further provided with a movable plate, which fits and matches the side wall of the filter barrel. The movable plate is provided with a second opening and is also connected to a driver so that it can move against the side wall of the filter barrel under the drive of the driver to adjust the alignment relationship between the second opening and the first opening, thereby controlling the opening and closing of the first opening to the outside.

[0010] Optionally, the end caps of the filter barrel are at least double-layered, and one of the layers is connected to the drive unit. When cleaning the smoke and dust on the filter screen, the inlet and outlet of the filter barrel can be staggered by rotating the movable layer in the cap, thus sealing both ends of the filter barrel and allowing the high-pressure gas output by the air pump to be discharged only through the first opening.

[0011] Optionally, the outer layer of the smoke inlet side cover of the filter barrel is fixedly installed and fixedly connected to a smoke inlet pipe.

[0012] Optionally, the outer side of the exhaust side cover of the filter barrel is also provided with a guide frame, the guide frame is provided with a guide groove, the guide frame is connected to the driver so as to rotate under the drive of the driver, a movable block is slidably arranged in the guide groove, and a rack is provided on the movable block;

[0013] A ball valve is installed on the air supply pipeline between the air pump and the mounting plate. A gear is installed on the valve shaft of the ball valve, and the gear meshes with the rack.

[0014] When the guide frame rotates, the movable block moves by the drive of the guide groove, and drives the ball valve to open or close by the gear and the rack.

[0015] Optionally, the side wall of the filter barrel is a sandwich structure, and the movable plate is disposed in the sandwich structure;

[0016] A scraper is provided on the inner wall of the filter barrel, and the scraper is fixedly connected to the movable plate.

[0017] Optionally, the mounting plate and the first opening are respectively disposed in the spaces on both sides of the filter screen, and the first opening is disposed on the side closer to the smoke inlet.

[0018] Optionally, multiple filter screens are arranged at intervals along the smoke and dust conveying direction of the filter barrel, and the filter screen holes are successively smaller. Multiple first openings are provided, and they are arranged one-to-one on the smoke inlet side of the corresponding filter screen.

[0019] Optionally, the number of the second openings is the same as the number of the first openings, and the plurality of the second openings are arranged at circumferential intervals along the filter barrel.

[0020] Optionally, a central shaft is fixedly provided in the filter barrel, the mounting plate is loosely fitted on the central shaft, and the exhaust side cover of the filter barrel is connected to the mounting plate through a periodic transmission mechanism, so that when the movable layer of the exhaust side cover rotates, the mounting plate can be driven by the periodic transmission mechanism to spring back to its original position after rotating by a preset angle.

[0021] The present invention provides a dust filtration device for copper smelting, comprising a filter barrel horizontally placed on a base, with a smoke inlet and an exhaust outlet at both ends of the filter barrel, a filter screen inside the filter barrel, and a first opening on the bottom wall of the filter barrel; a cleaning module comprising an air pump and a mounting plate, the mounting plate being disposed on the exhaust outlet side of the filter barrel and located in the space on one side of the filter screen, the mounting plate being provided with multiple nozzles facing the filter screen, the nozzles being connected to the air pump, wherein the high-pressure gas output by the air pump can impact the filter screen through the nozzles to blow off the dust adhering to the filter screen; the blown-off dust enters the collection module for collection through the first opening. The dust filtration device for copper smelting of the present invention eliminates the need to disassemble the equipment when cleaning the filter screen, effectively improving cleaning efficiency, and the cleaned dust can be discharged from the filter barrel and collected by the collection module, avoiding accumulation inside the filter barrel. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the dust filtration device for copper smelting in an embodiment of the present invention.

[0023] Figure 2 This is a partial cross-sectional view of a dust filtration device for copper smelting according to an embodiment of the present invention.

[0024] Figure 3 This is a partial structural schematic diagram of the cleaning module of the dust filtration device for copper smelting in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the control section of the cleaning module of the dust filtration device for copper smelting in an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the movable plate of the dust filtration device for copper smelting in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the periodic transmission mechanism of the dust filtration device for copper smelting in an embodiment of the present invention.

[0028] Figure 7 This is a partial structural diagram of the exhaust side cover plate of the dust filtration device for copper smelting in an embodiment of the present invention.

[0029] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0030] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] To address the inefficiency of existing filtration-based dust treatment systems, which typically require shutdown and filter removal for periodic cleaning, this invention provides a dust filtration device for copper smelting. The device includes a filter barrel horizontally mounted on a base, with an inlet and an outlet at each end. A filter screen is installed inside the barrel, and a first opening is located on the bottom wall. A cleaning module includes an air pump and a mounting plate. The mounting plate is positioned on the outlet side of the filter barrel, within the space surrounding the filter screen. Multiple nozzles facing the filter screen are connected to the air pump. High-pressure gas from the pump impacts the filter screen through the nozzles, blowing off the dust adhering to it. The blown-off dust enters a collection module through the first opening for collection. This design eliminates the need to disassemble the equipment for filter screen cleaning, significantly improving cleaning efficiency. Furthermore, the removed dust is discharged from the filter barrel and collected by the collection module, preventing accumulation within the filter barrel.

[0034] Specifically, please refer to Figure 1 , Figure 2 and Figure 3The dust filtration device for copper smelting in this embodiment includes a base 1, a filter barrel 2, and a cleaning module. The filter barrel 2 is placed horizontally on the base 1. The two ends of the filter barrel 2 are respectively provided with a smoke inlet and an exhaust outlet, and are respectively connected to the smoke inlet pipe 4 and the exhaust pipe 5. A filter screen 6 is provided inside the filter barrel 2. The dust is sent into the filter barrel 2 through the smoke inlet pipe 4, filtered by the filter screen 6, and discharged from the exhaust pipe 5.

[0035] The cleaning module includes an air pump 85 and a mounting plate 81. The mounting plate 81 is set in the filter barrel 2, near the exhaust port, and located in the space on one side of the filter screen 6. The mounting plate 81 is provided with multiple nozzles facing the filter screen 6. The nozzles are connected to the air pump 85. The high-pressure gas output by the air pump 85 can impact the filter screen 6 through the nozzles to blow off the dust adhering to the filter screen 6.

[0036] The bottom wall of the filter barrel 2 has a first opening, and the funnel 7 of the collection module is connected to the first opening. After the dust attached to the filter screen 6 is blown off, it can fall into the first opening, be collected through the funnel 7 and transported to the collection pipe 12, and then transported to the rear collector through the collection pipe 12.

[0037] The back-end collector includes, for example, a water tank, where the air carrying the dust settles after it flows into the water. The collection pipe 12 also includes a U-shaped pipe that can hold a certain amount of water. Without obstructing the transport, the U-shaped pipe can pre-absorb some of the dust particles. The dust particles deposited at the bottom of the U-shaped pipe can be removed and collected through a switch valve at the bottom.

[0038] During normal filtration, to prevent flue gas from overflowing from the first opening, in this embodiment, please refer to... Figure 5 The filter barrel 2 is also provided with a movable plate 98, which fits and matches the side wall of the filter barrel 2. The movable plate is provided with a second opening 982. The movable plate 98 is fixedly connected to a connecting rod 981, which is connected to a driver 91 through the connecting rod 981, so that it can move and fit against the side wall of the filter barrel 2 under the drive of the driver 91, and adjust the alignment relationship between the second opening 982 and the first opening, so as to control the opening and closing of the first opening to the outside.

[0039] In filtration mode, the movable plate 98 closes the first opening. In cleaning mode, the driver 91 starts, the drive shaft 92 rotates, driving the connecting rod 981 to move, causing the movable plate 98 to move against the side wall of the filter barrel 2 until the second opening moves to the position of the first opening, and the first opening opens.

[0040] The filter cartridge 2 is still equipped with a protective cover on the outside of the smoke inlet side, and the actuator 91 is installed inside the protective cover. The actuator 91 is, for example, a drive motor. When the filtered flue gas is high-temperature flue gas, the actuator 91 can be installed on the outside to facilitate heat dissipation.

[0041] Due to the obstruction of the smoke inlet pipe 4, the connecting rod 981 cannot complete the full circular motion. After cleaning, the driver 91 controls the drive shaft 92 to reverse, and the movable plate 98 is reset.

[0042] To facilitate the gas supply to the cleaning module, in this embodiment, the cleaning module also includes a gas storage tank 82. The top of the filter tank 2 is also provided with a gas collection port 851, which is aligned with the mounting plate 81. The collected gas is filtered gas. The gas collection port 851 is connected to the air pump 85. In the filtration mode, the filtered flue gas can be collected and pressurized and stored in the gas storage tank 82. The gas storage tank 82 is connected to the nozzle on the mounting plate 81 through the gas supply pipeline 83 and the ball valve. During cleaning, the ball valve is opened to provide high-pressure gas output.

[0043] To ensure that the airflow during cleaning is discharged from the first opening, in this embodiment, the end covers of the filter barrel 2 are at least double-layered, and the movable layer therein is connected to the drive 91 for transmission. When cleaning the smoke and dust on the filter screen 6, the smoke inlet and exhaust outlet on the cover can be staggered by rotating the movable layer in the cover, thus sealing the two ends of the filter barrel 2's filter working chamber, so that the high-pressure gas output by the air pump 85 is discharged only through the first opening.

[0044] To facilitate connection to the flue gas inlet pipe, the outer layer of the flue gas inlet side cover of the filter barrel 2 is fixedly installed and fixedly connected to the flue gas inlet pipe. The flue gas pipe is generally a rigid structure. Connecting the flue gas inlet pipe 4 to the fixed outer layer of the flue gas inlet side cover helps to ensure the stability of the flue gas inlet pipe 4.

[0045] Specifically, in this embodiment, both end caps of the filter bucket 2 are sandwich structures, such as... Figure 2 As shown, a first movable layer 93 is provided in the smoke inlet side cover plate. The first movable layer 93 is fixedly connected to the drive shaft 92 and can rotate with the rotation of the drive shaft 92.

[0046] Please refer to further details. Figure 4 The air pump 85 is connected to the mounting plate 81 through the air supply pipe 83 and is connected to the nozzle through the mounting plate 81. A ball valve is provided on the air supply pipe 83. In order to realize the opening and closing of the ball valve, in this embodiment, a guide frame 94 is also provided on the outer side of the exhaust side cover of the filter barrel 2. A guide groove is provided on the guide frame 94. The guide frame 94 is connected to the driver 91 through the drive shaft 92 so that it can rotate under the drive of the driver 91. A movable block 97 is slidably arranged in the guide groove. A rack is provided on the movable block 97. A gear 96 is provided on the valve shaft of the ball valve. The gear 96 is meshed with the rack (the linear movement limit structure of the movable block 97 is not shown in the figure to show the connection between the gear 96 and the rack).

[0047] When the guide frame 94 rotates, the movable block 97 moves by the drive of the guide slide, and drives the ball valve to open or close by the gear 96 and rack.

[0048] When the smoke inlet and exhaust outlet on the cover plate are staggered, the ball valve can be opened. Correspondingly, the offset section of the guide slide is positioned accordingly. Since the exhaust pipe 5 is fixed on the exhaust side cover plate, to prevent the connecting frame of the guide frame 94 from hitting the exhaust pipe 5 when rotating, its connecting frame can be provided with a rod, similar to the connecting rod 981 of the movable plate 98.

[0049] To facilitate the movement and guidance of the movable plate 98, in this embodiment, the side wall of the filter barrel 2 has a sandwich structure, and the movable plate 98 is disposed in the sandwich structure. Furthermore, to improve the cleaning effect inside the filter barrel 2, in this embodiment, as... Figure 7 As shown, magnetic scrapers 112 are provided on the inner side wall of the filter barrel 2. The two magnetic scrapers 112 are connected to the movable plate 98 through the magnetic attraction of the first magnet 111 and the second magnet 113.

[0050] When the flue gas temperature is high, it can cause the magnet to demagnetize. In this case, a groove can be made on the inner wall of the filter barrel 2 to achieve direct connection between the scraper and the movable plate 98. At the same time, the sealing performance can be improved by the outer layer of the sandwich structure on the side wall of the filter barrel 2.

[0051] To facilitate the collection of blown-off smoke and dust, in this embodiment, the mounting plate 81 and the first opening are respectively located in the spaces on both sides of the filter screen 6, with the first opening located on the side closer to the smoke inlet. This ensures that the smoke received by the mounting plate 81 is filtered smoke, preventing the nozzles on it from being blocked by smoke and dust particles. The smoke and dust particles impacted by the airflow move in the direction of the corresponding first opening, ensuring collection efficiency.

[0052] To improve the filtration effect, in this embodiment, multiple filter screens 6 are arranged sequentially at intervals along the dust conveying direction of the filter barrel 2, and the filter screen holes are successively smaller. Multiple first openings are arranged accordingly, and each is arranged on the smoke inlet side of the corresponding filter screen 6.

[0053] In cleaning mode, multiple first openings can be used as exhaust outlets for smoke and dust. However, different first openings correspond to cleaning gas flow paths with filters 6, which can affect flow efficiency. To ensure the flow efficiency of the cleaning airflow, in this embodiment, as follows... Figure 5 As shown, the number of second openings 982 is the same as the number of first openings, and multiple second openings 982 are arranged at circumferential intervals along the filter barrel 2, so that only one first opening is open at any given time, the cleaning airflow can be concentrated on one path, the flow rate is reliable, and the cleaning efficiency can be ensured.

[0054] Furthermore, in cleaning mode, as the movable plate 98 rotates, the first opening near the exhaust port opens first, prioritizing the cleaning of the filter with smaller mesh. When cleaning subsequent filters, the cleaning airflow can smoothly pass through the already cleaned filters, ensuring the cleaning effectiveness of each filter.

[0055] The number of nozzles on the mounting plate 81 is limited, and it is for point cleaning. To improve the comprehensiveness of the high-pressure airflow in cleaning the front of the filter screen, in this embodiment, a central shaft is fixedly installed in the filter barrel 2. The central shaft is hollow to facilitate the installation of the drive shaft 92. The mounting plate 81 is loosely fitted on the central shaft so that it can rotate and slide. The exhaust side cover plate of the filter barrel 2 is connected to the mounting plate 81 through a periodic transmission mechanism. When the second movable layer 931 in the exhaust side cover plate rotates, the mounting plate 81 can be driven by the periodic transmission mechanism to rebound and reset after rotating by a preset angle. This makes the position of the nozzles movable, thereby increasing the impact coverage of the output airflow and improving the cleaning effect.

[0056] For details, please refer to further information. Figure 3 , Figure 6 and Figure 7 In this embodiment, the mounting plate 81 is provided with an air inlet and has a channel inside that connects the air inlet to each nozzle. The air inlet is connected to the air pump 85 through a retractable hose 84 so that the air supply is maintained through the retractable hose 84 when the mounting plate 81 is moving.

[0057] An annular guide groove 101 (not a complete annulus to ensure the fixation of the surrounding area to the main body of the inner layer plate) and an arc-shaped limiting groove 31 are concentrically arranged on the inner layer plate of the exhaust side cover plate 3; a contact block 102 is elastically provided on the second movable layer 931 in the interlayer of the exhaust side cover plate 3 by means of a first spring 103. The contact block 102 is led out by the annular guide groove 101 and points towards the mounting plate 81; a second spring 105 is provided between the mounting plate 81 and the exhaust side cover plate 3. A first limiting block 104 and a second limiting block 106 are provided on the side of the mounting plate 81 pointing towards the exhaust side cover plate 3. Multiple first limiting blocks 104 are arranged circumferentially and are aligned with the contact blocks 102. The second limiting block 106 extends into the arc-shaped limiting groove 31 and is elastically connected to push the second limiting block 106 to reset.

[0058] When the second movable layer 931 of the exhaust side cover plate 3 rotates, the contact block 102 moves along the annular guide groove 101 following the second movable layer 931 and contacts the inclined surface of a first limiting block 104, which can drive the mounting plate 81 to rotate.

[0059] When the second limiting block 106 moves to the boundary of the arc-shaped limiting groove 31, it is blocked by the arc-shaped limiting groove 31, and the mounting plate 81 cannot continue to rotate. At this time, the contact block 102 and the first limiting block 104 slide through the contact inclined surface, which can push the mounting plate 81 open, thereby releasing the limitation on the mounting plate 81. The mounting plate 81 can rotate elastically between the second limiting block 106 and the arc-shaped limiting groove 31, and at the same time, under the action of the second spring 105, it moves closer to the exhaust side cover plate 3, restoring the limiting ability between the contact block 102 and the first limiting block 104. When the second movable layer 931 of the exhaust side cover plate 3 rotates further by a certain angle, the contact block 102 can contact the next first limiting block 104, and then push the mounting plate 81 to rotate by a certain angle, thereby realizing the periodic rotation drive of the mounting plate 81.

[0060] The present invention provides a dust filtration device for copper smelting, comprising a filter barrel horizontally placed on a base, with a flue gas inlet and an exhaust outlet at both ends of the filter barrel, a filter screen inside the filter barrel, and a first opening on the bottom wall of the filter barrel; a cleaning module comprising an air pump and a mounting plate, the mounting plate being disposed on the exhaust outlet side of the filter barrel and located in the space on one side of the filter screen, the mounting plate being provided with multiple nozzles facing the filter screen, the nozzles being connected to the air pump, wherein the high-pressure gas output by the air pump can impact the filter screen through the nozzles to blow off the dust adhering to the filter screen; the blown-off dust enters the collection module for collection through the first opening. The device does not need to be disassembled when cleaning the filter screen, which can effectively improve cleaning efficiency, and the cleaned dust can be discharged from the filter barrel and collected by the collection module, avoiding accumulation inside the filter barrel.

[0061] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] The embodiments described above are merely illustrative of several specific implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A fume filtering device for copper smelting, characterized in that, The utility model relates to a filter barrel, the filter barrel is horizontally arranged on the base, and the filter barrel is provided with a smoke inlet and an exhaust port at two ends respectively, a filter screen is arranged in the filter barrel, and a first opening is arranged on the bottom wall of the filter barrel. The cleaning module comprises a gas pump and a mounting disc, the mounting disc is arranged on the exhaust port side of the filter barrel and located in the space on one side of the filter screen, a plurality of nozzles facing the filter screen are arranged on the mounting disc, the nozzles are communicated with the gas pump, wherein the high-pressure gas output by the gas pump is impacted on the filter screen through the nozzles to blow off the dust attached to the filter screen. The collecting module is communicated with the first opening and is used for collecting the blown-off dust through the first opening. The side wall of the filter barrel is a sandwich structure, the sandwich structure is further provided with a movable plate in the sandwich layer, a scraper is further arranged on the inner side wall of the filter barrel, the scraper is oppositely fixedly arranged with the movable plate through magnetic attraction, the movable plate is matched with the side wall of the filter barrel, a second opening is arranged on the movable plate, and the movable plate is further connected with a driver to move in close contact with the side wall of the filter barrel under the driving of the driver, the alignment relationship between the second opening and the first opening is adjusted to control the opening and closure of the first opening to the outside. A middle shaft is fixedly arranged in the filter barrel, the mounting disc is sleeved on the middle shaft, and a periodic transmission mechanism is connected between the exhaust side cover plate of the filter barrel and the mounting disc to drive the mounting disc to rebound and reset after each rotation by a preset angle when the second movable layer of the exhaust side cover plate rotates. The periodic transmission mechanism comprises: An annular guide groove and an arc-shaped limiting groove are arranged on the side of the exhaust side cover plate directed to the mounting disc. A contact block is connected with the second movable layer through the first spring telescopic elasticity, the contact block is guided out of the annular guide groove and arranged directed to the mounting disc, and the second movable layer drives the contact block to slide along the annular guide groove when the second movable layer rotates. A second spring is arranged between the mounting disc and the exhaust side cover plate to reset the mounting disc to the direction close to the exhaust side cover plate. A first limiting block and a second limiting block are arranged on the side of the mounting disc directed to the exhaust side cover plate, a plurality of first limiting blocks are arranged at intervals in the circumferential direction of the mounting disc and matched with the contact block, the first limiting block is in inclined surface contact with the contact block, the second limiting block is arranged in the arc-shaped limiting groove and elastically connected to reset the mounting disc in the circumferential direction of the mounting disc. The cover plates at two ends of the filter barrel are at least double-layer structures, and one layer of the cover plates is drivingly connected with the driver to stagger the arrangement of the smoke inlet and the exhaust port on the cover plate by rotating the movable layer in the cover plate when the dust on the filter screen is cleaned, close the two ends of the filter barrel, and make the high-pressure gas output by the gas pump only discharged through the first opening.

2. The fume filtering device for copper smelting according to claim 1, characterized in that, The outer layer of the smoke inlet side cover plate of the filter barrel is fixedly arranged and fixedly connected with a smoke inlet pipeline.

3. A fume filtering device for copper smelting according to claim 2, characterized in that, ​ 4. The smoke dust filtering device for copper smelting according to claim 2, characterized in that, the outer side of the exhaust side cover plate of the filtering barrel is further provided with a guide frame, the guide frame is provided with a guide sliding groove, the guide frame is in driving connection with the driver to rotate under the driving of the driver, and the movable block is slidably arranged in the guide sliding groove, and the rack is arranged on the movable block; a ball valve is arranged on the gas conveying pipeline between the gas pump and the mounting disc, a gear is arranged on the valve shaft of the ball valve, and the gear is in meshing connection with the rack; when the guide frame rotates, the movable block moves through the driving of the guide sliding groove, and the ball valve is driven to open or close through the gear and the rack.

5. The flue dust filtering device for copper smelting according to claim 1, characterized by, the mounting disc and the first opening are respectively arranged in the space on both sides of the filtering screen, and the first opening is arranged on the side close to the smoke inlet.

6. A fume filtering device for copper smelting according to claim 5, characterized in that a plurality of filtering screens are sequentially and spacedly arranged along the smoke dust conveying direction of the filtering barrel, the filtering screen holes are sequentially reduced, a plurality of first openings are arranged, and the first openings are one-to-one arranged on the smoke inlet side of the corresponding filtering screen.

7. A fume filtering device for copper smelting according to claim 6, characterized in that the number of the second openings is consistent with the number of the first openings, and a plurality of the second openings are spacedly arranged along the circumference of the filtering barrel.

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