A smelting system for non-ferrous metals

Abstract

The application discloses a smelting system for non-ferrous metals and relates to the technical field of metal smelting. The smelting system comprises a smelting furnace, a primary filtering device and a secondary filtering device which are communicated with an exhaust pipe of the smelting furnace, the size of target floating objects filtered by the primary filtering device is larger than that of target floating objects filtered by the secondary filtering device; the primary filtering device comprises at least one shell, at least one filtering plate, at least one dredging plate and a plurality of special-shaped scrapers arranged on the dredging plate; each filtering hole of the filtering plate is oppositely arranged with at least two special-shaped scrapers, one end of the oppositely arranged at least two special-shaped scrapers is connected with the dredging plate, and the other end is obliquely outwardly extended, so that a movable gap is formed between the at least two special-shaped scrapers, metal liquid adhered to the inner wall of the filtering hole is cleaned, the liquefied floating objects are prevented from causing the filtering hole to be blocked, and the effective treatment of high-temperature gas is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal smelting, in particular to a smelting system for non-ferrous metals. BACKGROUND

[0002] Non-ferrous metal smelting refers to the production activities of smelting, refining, electrolysis or other methods from non-ferrous metal ore, scrap metal and other non-ferrous metal raw materials to extract commonly used metals. It includes the smelting of metals such as aluminum, copper, nickel, lead, zinc, rare earth, gold and silver.

[0003] At present, non-ferrous metals are usually smelted in a smelting furnace. A large amount of metal ore is put into the smelting furnace, and a certain amount of reaction gas such as oxygen is introduced to complete the smelting of non-ferrous metals. However, during the smelting process, toxic gases with high temperature are continuously generated. In order to prevent the toxic gases from affecting the health of workers, a filtering system needs to be additionally arranged at the exhaust port of the smelting furnace. The filtering system includes a smoke dust absorber and a filter plate arranged at the front end of the smoke dust absorber. The filter plate can filter the larger floating particles in the toxic gas, so that the smoke dust absorber only filters the smaller floating particles, thereby prolonging the service life of the smoke dust absorber and reducing the probability of smoke dust absorber failure.

[0004] However, due to the high temperature of the toxic gas, the floating particles are affected by the high temperature and are prone to liquefaction. Some of the floating particles will adhere to the inner wall of the filter hole, thereby affecting the pore size of the filter hole. Long-term filtering of high-temperature toxic gas causes the liquefied floating particles to stack in the filter hole, thereby causing the filter hole to be blocked, which seriously affects the filtering effect of the toxic gas. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a smelting system for non-ferrous metals to solve the technical problem that the existing filtering method for toxic gas is prone to cause filter hole blockage and seriously affects the filtering effect of toxic gas.

[0006] The present application provides a smelting system for non-ferrous metals, which comprises a smelting furnace and a first filtering device and a second filtering device connected with an exhaust pipe of the smelting furnace. The smelting furnace is used for smelting metal. The exhaust pipe is used for transmitting the gas generated during the smelting of the smelting furnace to the outside of the smelting furnace and filtering the target floating particles in the gas through the first filtering device and the second filtering device. The first filtering device is arranged between the second filtering device and the exhaust pipe, and the size of the target floating particles filtered by the first filtering device is greater than the size of the target floating particles filtered by the second filtering device.

[0007] The primary filtering device comprises at least one housing, at least one filtering plate fixedly connected in the housing, at least one unblocking plate slidably connected in the housing, and a plurality of profiled scrapers arranged on the side of the unblocking plate facing the filtering plate.

[0008] Each filtering hole of the filtering plate is arranged opposite to at least two profiled scrapers, one end of each of the at least two profiled scrapers is connected to the unblocking plate, and the other end thereof extends obliquely outward, so that an active gap is formed between the at least two profiled scrapers. When the unblocking plate slides towards the filtering plate, the profiled scrapers are attached to the inner wall of the filtering hole to discharge the target floating objects on the filtering hole out of the filtering range of the filtering hole.

[0009] Further, the primary filtering device comprises a plurality of first profiled scrapers and a plurality of second profiled scrapers.

[0010] Each of the first profiled scrapers and the second profiled scrapers is arranged opposite to each other, and one end of each of the first profiled scrapers and the second profiled scrapers is connected to the unblocking plate, and the other end thereof extends obliquely outward, so that an active gap is formed between the at least two profiled scrapers.

[0011] Further, at least one first bending part is arranged along the length direction of the first profiled scraper, so that the first profiled scraper is divided into a first elastic part and a first profiled part.

[0012] At least one second bending part is arranged along the length direction of the second profiled scraper, so that the second profiled scraper is divided into a second elastic part and a second profiled part.

[0013] The first elastic part and the second elastic part are arranged opposite to each other, and the first profiled part and the second profiled part are arranged opposite to each other, so that when the first profiled scraper and the second profiled scraper enter a filtering hole, the first elastic part and the second elastic part are deformed towards the active gap, so that the first profiled part and the second profiled part are attached to each other to form a closed end part.

[0014] Further, the first bending part comprises a first bending sub-part and a first straight sub-part, and the second bending part comprises a second bending sub-part and a second straight sub-part.

[0015] The first bending sub-part is connected to the first profiled part, and the first straight sub-part is connected to the first profiled part.

[0016] The second bending sub-part is connected to the second profiled part, and the second straight sub-part is connected to the second profiled part.

[0017] Further, the cross section of the first bent sub-portion and the cross section of the second bent sub-portion are both circular arc.

[0018] Further, the primary filtering device further comprises a rotating shaft arranged in the shell, a vane sleeved on the rotating shaft, and a driving member connected with the rotating shaft, the driving member being used to drive the rotating shaft to rotate, so that the vane drives the gas to be transmitted towards the secondary filtering device.

[0019] The vane is arranged behind the dredging plate.

[0020] Further, the primary filtering device further comprises a linkage assembly arranged between the rotating shaft and the dredging plate, so that when the driving member drives the rotating shaft to rotate, the dredging plate reciprocates towards the filtering plate.

[0021] Further, the linkage assembly comprises a connecting rod, a rotating disc, and a first bevel gear and a second bevel gear concentrically connected with the rotating disc and the rotating shaft respectively, the first bevel gear and the second bevel gear being mutually meshed.

[0022] One end of the connecting rod is connected with the dredging plate, and the other end is rotatably connected to one side of the rotating disc away from the first bevel gear, when the driving member drives the rotating shaft to rotate, the rotating disc and the connecting rod drive the dredging plate to reciprocate towards the filtering plate through the transmission between the first bevel gear and the second bevel gear.

[0023] Further, the shell is further provided with a sliding groove for the dredging plate to slide.

[0024] Further, the driving member is arranged outside the shell.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] In the smelting system for non-ferrous metal provided by the application, the dredging plate is slidably arranged in the shell, and the plurality of special-shaped scrapers are arranged on the side of the dredging plate facing the filter plate, and each filter hole of the filter plate is arranged opposite to at least two special-shaped scrapers. By sliding the dredging plate, each two special-shaped scrapers enter each filter hole. The end of each of the at least two special-shaped scrapers arranged opposite is connected with the dredging plate, and the other end is obliquely outwardly extended, so that the active gap is formed between the at least two special-shaped scrapers. When the dredging plate slides towards the filter plate, the special-shaped scrapers are attached to the inner wall of the filter hole to discharge the target floating object on the filter hole out of the filtering range of the filter hole. The two special-shaped scrapers entering the filter hole are scraped along the inner wall of the filter hole, so that the metal liquid attached to the inner wall of the filter hole is cleaned, thereby avoiding the clogging of the filter hole by the liquefied floating object, and realizing the long-time and efficient filtering of the high-temperature toxic gas. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a perspective view of a smelting system for non-ferrous metal in an embodiment of the application.

[0028] Figure 2 It is a top view of a smelting system for non-ferrous metal in an embodiment of the application.

[0029] Figure 3 It is an A-A sectional view of Figure 2

[0030] Figure 4 It is a structural schematic view of a primary filter device in an embodiment of the application.

[0031] Figure 5 It is a working state schematic view of a primary filter device in an embodiment of the application.

[0032] Figure 6 It is a structural schematic view of a first special-shaped scraper and a second special-shaped scraper in an embodiment of the application.

[0033] Figure 7 It is a working state schematic view of a first special-shaped scraper and a second special-shaped scraper in an embodiment of the application.

[0034] Figure 8 It is a perspective view of a shell and a smelting furnace in an embodiment of the application.

[0035] REFERENCE SIGNS

[0036] ​In the figure: 100, smelting furnace; 110, exhaust pipe; 200, primary filtering device; 210, shell; 220, filter plate; 221, filter hole; 230, dredging plate; 240, first profiled scraper; 241, first bending part; 2411, first bending subpart; 2412, first straight subpart; 242, first elastic part; 243, first profiled part; 250, second profiled scraper; 251, second bending part; 2511, second bending subpart; 2512, second straight subpart; 252, second elastic part; 253, second profiled part; 260, rotating shaft; 270, blade; 280, driving member; 290, linkage assembly; 291, connecting rod; 292, rotating disc; 293, first bevel gear; 294, second bevel gear; 300, secondary filtering device. DETAILED DESCRIPTION

[0037] 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 application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0038] Moreover, the term "and / or" as used herein refers to and encompasses any and all combinations of one or more of the associated listed items. In specific embodiments, the phrase "one or more of' followed by a list of two or more items refers to any one of the listed items individually, or to any combination of the listed items. For example, if items A and B are listed, the phrase "one or more of A and B" means A alone, B alone, or A and B together. In another example, if items A, B, and C are listed, the phrase "one or more of A, B, and C" means A alone, B alone, C alone, A and B together, A and C together, B and C together, or A and B and C together. In specific embodiments, the phrase "at least one of' followed by a list of two or more items refers to any one of the listed items individually, or to any combination of the listed items. For example, if items A and B are listed, the phrase "at least one of A and B" means A alone, B alone, or A and B together. In another example, if items A, B, and C are listed, the phrase "at least one of A, B, and C" means A alone, B alone, C alone, A and B together, A and C together, B and C together, or A and B and C together. In specific embodiments, the phrase "one or more of' or "at least one of' is used in the context of a list of items to indicate that at least one of the items is required, but that more than one of the items can be used. For example, if items A, B, and C are listed, the phrase "one or more of A, B, and C" means that at least one of A, B, or C is required, but that more than one of A, B, and C can be used. In another example, if items A, B, and C are listed, the phrase "at least one of A, B, and C" means that at least one of A, B, or C is required, but that more than one of A, B, and C can be used.

[0039] See Figures 1-8As shown, the present application provides a smelting system for non-ferrous metals, which comprises a smelting furnace 100. In the embodiment, the smelting furnace 100 belongs to the conventional prior art for smelting non-ferrous metals in the prior art, and has a power source inside to generate molten metal ore. Therefore, no special description is made herein. Since a large amount of high-temperature toxic gas is continuously generated in the process of smelting metal ore, and the gas has different sizes of floating objects inside, the different sizes of floating objects are filtered.

[0040] Therefore, the smelting system provided in the embodiment comprises a first filtering device 200 and a second filtering device 300 which are connected with an exhaust pipe 110 of the smelting furnace 100. The smelting furnace 100 is used for smelting metal, and the exhaust pipe 110 is used for transmitting the gas generated in the smelting process of the smelting furnace 100 outside the smelting furnace 100, and filtering the target floating objects in the gas by the first filtering device 200 and the second filtering device 300.

[0041] Specifically, the first filtering device 200 is arranged between the second filtering device 300 and the exhaust pipe 110, and the size of the target floating objects filtered by the first filtering device 200 is larger than the size of the target floating objects filtered by the second filtering device 300. It should be noted that the first filtering device 200 in the embodiment can be used to filter large-size floating objects, i.e., the large-size floating objects are filtered by the first filtering device 200, so that the second filtering device 300 only filters small-particle floating objects, thereby prolonging the service life of the second filtering device 300 and reducing the probability of blockage of the second filtering device 300. Specifically, the second filtering device 300 can adopt a smoke dust absorber in the prior art, and the smoke dust absorber can be used to filter small-size floating objects.

[0042] In the embodiment, the first filtering device 200 comprises at least one housing 210, at least one filtering plate 220 fixedly connected in the housing 210, at least one unblocking plate 230 slidably connected in the housing 210, and a plurality of profiled scrapers arranged on one side of the unblocking plate 230 facing the filtering plate 220.

[0043] Specifically, each filtering hole 221 of the filtering plate 220 is arranged opposite to at least two profiled scrapers, and one end of the at least two profiled scrapers arranged opposite is connected with the unblocking plate 230, and the other end is obliquely outwardly extended, so that the movable gap is formed between the at least two profiled scrapers. When the unblocking plate 230 slides towards the filtering plate 220, the profiled scrapers are attached along the inner wall of the filtering hole 221 to discharge the target floating objects on the filtering hole 221 out of the filtering range of the filtering hole 221.

[0044] When the high-temperature gas is transmitted in the shell 210, the large-size target floating matter is filtered through the filtering holes 221 on the filter plate 220, and the target floating matter is easily liquefied due to the high temperature of the gas. The liquefaction process is to liquefy the small-particle metal particles, so that the liquefied target floating matter is attached to the inner wall of the filtering hole 221. Due to the high temperature of the gas, the floating matter cannot be completely liquefied, and the liquefied state is a metal liquid with a certain viscosity. With long-time filtering, the filtering hole 221 is easily blocked. The embodiment is provided with the sliding connection dredging plate 230 in the shell 210, and a plurality of special-shaped scrapers on the side of the dredging plate 230 facing the filter plate 220. Each filtering hole 221 of the filter plate 220 is arranged opposite to at least two special-shaped scrapers. By sliding the dredging plate 230, each two special-shaped scrapers enter each filtering hole 221. The one end of the at least two special-shaped scrapers is connected with the dredging plate 230, and the other end is obliquely outwardly extended, so that the movable gap is formed between the at least two special-shaped scrapers. When the dredging plate 230 slides towards the filter plate 220, the special-shaped scrapers are attached along the inner wall of the filtering hole 221 to discharge the target floating matter on the filtering hole 221 out of the filtering range of the filtering hole 221. The two special-shaped scrapers entering the filtering hole 221 scrape along the inner wall of the filtering hole 221, so as to clean the metal liquid attached to the inner wall of the filtering hole 221, thereby avoiding the blocking of the filtering hole 221 by the liquefied floating matter. When the high-temperature toxic gas is filtered in a long-time and high-efficiency manner, the effective treatment of the high-temperature gas is ensured.

[0045] For the convenience of understanding the case, in the embodiment, the primary filtering device 200 includes a plurality of first special-shaped scrapers 240 and a plurality of second special-shaped scrapers 250. Each first special-shaped scraper 240 and each second special-shaped scraper 250 are arranged opposite to each other, and one end of each first special-shaped scraper 240 and each second special-shaped scraper 250 is connected with the dredging plate 230, and the other end is obliquely outwardly extended, so that a movable gap is formed between the at least two special-shaped scrapers. It should be noted that each filtering hole 221 corresponds to one first special-shaped scraper 240 and one second special-shaped scraper 250.

[0046] Specifically, in order to facilitate the scraping of the inner wall of the filter hole 221, in the present example, at least one first bending portion 241 is arranged along the length direction of the first special-shaped scraper 240, so that the first special-shaped scraper 240 is divided into a first elastic portion 242 and a first special-shaped portion 243; at least one second bending portion 251 is arranged along the length direction of the second special-shaped scraper 250, so that the second special-shaped scraper 250 is divided into a second elastic portion 252 and a second special-shaped portion 253; the first elastic portion 242 and the second elastic portion 252 are arranged opposite to each other, and the first special-shaped portion 243 and the second special-shaped portion 253 are arranged opposite to each other, so that when the first special-shaped scraper 240 and the second special-shaped scraper 250 enter a filter hole 221, the first elastic portion 242 and the second elastic portion 252 are deformed towards the movable gap, so that the first special-shaped portion 243 and the second special-shaped portion 253 are mutually attached to form a closed end portion.

[0047] That is, when it is necessary to clean the inner wall of the filter hole 221, the unblocking plate 230 is slid, so that the corresponding first special-shaped scraper 240 and the second special-shaped scraper 250 on the unblocking plate 230 can move towards the corresponding filter hole 221, and through the mutual elastic action of the first elastic portion 242 and the second elastic portion 252, the first special-shaped portion 243 and the second special-shaped portion 253 will move relative to each other after entering the filter hole 221, and when the first special-shaped scraper 240 and the second special-shaped scraper 250 completely enter the filter hole 221, one end of the first special-shaped portion 243 and the second special-shaped portion 253 will form a closed end portion, and the first bending portion 241 and the second bending portion 251 abut against the inner wall of the filter hole 221, so that the target floating object in the filter hole 221 is cleaned through the closed end portion, and the target floating object adhered to the inner wall of the filter hole 221 is cleaned through the first bending portion 241 and the second bending portion 251, so that the target floating object remaining in the filter hole 221 can be completely cleaned.

[0048] Please refer to Figure 7 As shown in the figure, in some preferred embodiments, when the first special-shaped portion 243 and the second special-shaped portion 253 form a closed end portion, the closed end portion is a tapered structure, compared with a planar structure, through the tapered structure, the target floating object can be effectively completely cleaned, and the tapered structure makes the first special-shaped portion 243 and the second special-shaped portion 253 have a certain guiding effect when entering the filter hole 221.

[0049] Please refer to Figure 7 As shown in the figure, in some preferred embodiments, the length dimension of the first special-shaped scraper 240 and the second special-shaped scraper 250 can be greater than the depth of the filter hole 221, so that after the first special-shaped scraper 240 and the second special-shaped scraper 250 move completely, they can extend out of the edge of the filter hole 221, thereby further ensuring the effect of completely cleaning the filter hole 221.

[0050] In addition, since the first bending part 241 and the second bending part 251 are in point contact when cleaning the inner wall of the filter hole 221, in the present example, the first bending part 241 comprises a first bending sub-part 2411 and a first straight sub-part 2412, and the second bending part 251 comprises a second bending sub-part 2511 and a second straight sub-part 2512; the first bending sub-part 2411 is connected with the first special-shaped part 243, and the first straight sub-part 2412 is connected with the first special-shaped part 243; the second bending sub-part 2511 is connected with the second special-shaped part 253, and the second straight sub-part 2512 is connected with the second special-shaped part 253, that is, by arranging the first straight sub-part 2412 and the second straight sub-part 2512, the point contact is improved to surface contact, that is, when the first special-shaped scraper 240 and the second special-shaped scraper 250 enter the corresponding filter hole 221, the first straight sub-part 2412 and the second straight sub-part 2512 are in contact with the inner wall of the filter hole 221, and the first straight sub-part 2412 and the second straight sub-part 2512 clean the inner wall of the filter hole 221, so that the cleaning area of the inner wall of the filter hole 221 can be increased, and the comprehensive cleaning of the inner wall of the filter hole 221 is ensured, and in some preferred embodiments, the cross section of the first bending sub-part 2411 and the cross section of the second bending sub-part 2511 are both arranged in circular arcs, so that the sharp end of the first special-shaped scraper 240 and the second special-shaped scraper 250 is avoided to scratch the inner wall of the filter hole 221.

[0051] It should be noted that, in order to avoid the influence of the dredging plate 230 on the transmission of the gas, dredging holes are arranged at the corresponding positions of the dredging plate 230, so that the gas can flow quickly.

[0052] In addition, in order to improve the processing efficiency of the gas, in some preferred embodiments, the primary filter device 200 further comprises a rotating shaft 260 arranged in the shell 210, a blade 270 sleeved on the rotating shaft 260, and a driving member 280 connected with the rotating shaft 260, the driving member 280 is used to drive the rotating shaft 260 to rotate, so that the blade 270 drives the gas to be transmitted to the secondary filter device 300, wherein the blade 270 is arranged behind the dredging plate 230, and the blade 270 is driven to rotate by the driving member 280, so that the blade 270 can drive the gas to flow quickly, thereby improving the processing efficiency of the gas.

[0053] In some preferred embodiments, in order to drive the dredging plate 230 to slide, in some other preferred embodiments, the primary filter device 200 further comprises a linkage assembly 290 arranged between the rotating shaft 260 and the dredging plate 230, so that when the driving member 280 drives the rotating shaft 260 to rotate, the dredging plate 230 reciprocates towards the filter plate 220.

[0054] Specifically, the linkage assembly 290 comprises a connecting rod 291, a rotating disc 292, and a first bevel gear 293 and a second bevel gear 294 connected concentrically with the rotating disc 292 and the rotating shaft 260 respectively, the first bevel gear 293 and the second bevel gear 294 are in mesh with each other, wherein one end of the connecting rod 291 is connected with the dredging plate 230, and the other end is rotatably connected to one side of the rotating disc 292 away from the first bevel gear 293, when the driving member 280 drives the rotating shaft 260 to rotate, the rotating disc 292 and the connecting rod 291 drive the dredging plate 230 to reciprocate towards the filter plate 220 through the transmission between the first bevel gear 293 and the second bevel gear 294.

[0055] That is, the connecting rod 291 and the rotating disc 292 can constitute a crank slider structure, when the driving member 280 drives the rotating shaft 260 to rotate, the corresponding second bevel gear 294 also rotates, and the meshing between the gears enables the second bevel gear 294 to drive the first bevel gear 293 to drive the rotating disc 292 to rotate, so that the connecting rod 291 drives the dredging disc to reciprocate, so that when the rotating shaft 260 rotates to a certain extent, the first special-shaped scraper 240 and the second special-shaped scraper 250 can clean the target floating objects in the filter hole 221, and then when the rotating shaft 260 continues to rotate, through the corresponding function of the crank slider, the first special-shaped scraper 240 and the second special-shaped scraper 250 will be separated from the filter hole 221, so that the filter hole 221 can be intermittently cleaned.

[0056] It should be noted that in some actual cases, the number of teeth between the first bevel gear 293 and the second bevel gear 294 can be limited, so as to control the efficiency of the first special-shaped scraper 240 and the second special-shaped scraper 250 in cleaning the target floating objects in the filter hole 221, that is, the number of teeth of the second bevel gear 294 can be less than that of the first bevel gear 293.

[0057] In order to ensure the reliability of the sliding of the dredging plate 230, in some preferred embodiments, a sliding groove for the sliding of the dredging plate 230 is further arranged in the shell 210.

[0058] In order to avoid the influence of high-temperature gas on the driving member 280, the driving member 280 can be arranged outside the shell 210, it should be noted that the driving member 280 can adopt a servo motor in the art, since the servo motor is a conventional prior art in the field, it will not be described in detail here.

[0059] In some preferred embodiments, a corresponding collecting device can also be arranged at the bottom of the shell 210, the collecting device can comprise a collecting box and a slidingly connected pull-out plate in the collecting box, by pulling the pull-out plate, the waste collected in the collecting device can be cleaned, specifically, a pipe body can be used to communicate the collecting box and the shell 210.

[0060] In summary, the first embodiment of the present application provides a smelting system for non-ferrous metals, which has at least the following advantages compared with the conventional smelting furnace.

[0061] In the smelting system for non-ferrous metals provided by the present application, the dredging plate 230 is slidably arranged in the shell 210, and the plurality of profiled scrapers on the side of the dredging plate 230 facing the filter plate 220, and each filter hole 221 of the filter plate 220 is arranged opposite to at least two profiled scrapers. By sliding the dredging plate 230, each two profiled scrapers will enter each filter hole 221. At the same time, one end of each of the at least two profiled scrapers is connected to the dredging plate 230, and the other end is obliquely outwardly extended, so that an active gap is formed between the at least two profiled scrapers. When the dredging plate 230 slides towards the filter plate 220, the profiled scrapers are attached to the inner wall of the filter hole 221 to discharge the target floating objects on the filter hole 221 out of the filtering range of the filter hole 221. The two profiled scrapers entering the filter hole 221 will scrape along the inner wall of the filter hole 221, thereby cleaning the metal liquid attached to the inner wall of the filter hole 221, thereby avoiding the clogging of the filter hole 221 by the liquefied floating objects, and realizing the efficient filtering of the high-temperature toxic gas for a long time, thereby ensuring the effective treatment of the high-temperature gas.

[0062] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description 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.

[0063] The above embodiments only express several embodiments of the present application, which are described in detail and specifically, but cannot be understood as limitations on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. A smelting system for non-ferrous metals, characterized by, The application relates to a filtering device for a smelting furnace, which comprises a primary filtering device and a secondary filtering device connected with an exhaust pipe of the smelting furnace. The primary filtering device comprises at least one housing, at least one filtering plate fixedly connected in the housing, at least one unblocking plate slidingly connected in the housing, and a plurality of profiled scrapers arranged on one side of the unblocking plate facing the filtering plate. Each filtering hole of the filtering plate is oppositely arranged with at least two profiled scrapers, one end of each of the oppositely arranged profiled scrapers is connected with the unblocking plate, and the other end thereof is obliquely outwardly extended, so that a movable gap is formed between the at least two profiled scrapers. The primary filtering device comprises a plurality of first profiled scrapers and a plurality of second profiled scrapers. Each first profiled scraper and each second profiled scraper are oppositely arranged, one end of each of the first profiled scrapers and the second profiled scrapers is connected with the unblocking plate, and the other end thereof is obliquely outwardly extended, so that a movable gap is formed between the at least two profiled scrapers. At least one first bending part is arranged along the length direction of the first profiled scraper, so that the first profiled scraper is divided into a first elastic part and a first profiled part. At least one second bending part is arranged along the length direction of the second profiled scraper, so that the second profiled scraper is divided into a second elastic part and a second profiled part. The first elastic part and the second elastic part are oppositely arranged, and the first profiled part and the second profiled part are oppositely arranged, so that when the first profiled scraper and the second profiled scraper enter a filtering hole, the first elastic part and the second elastic part are deformed towards the movable gap, so that the first profiled part and the second profiled part are mutually adhered to form a closed end part. The primary filtering device further comprises a rotating shaft arranged in the housing, a blade sleeved on the rotating shaft, and a driving member connected with the rotating shaft, the driving member is used for driving the rotating shaft to rotate, so that the blade drives the gas to be transmitted towards the secondary filtering device. The blade is arranged behind the unblocking plate.

2. A smelting system for non-ferrous metals as claimed in claim 1 wherein, The first bending part comprises a first bending subpart and a first straight subpart, and the second bending part comprises a second bending subpart and a second straight subpart. The first bending subpart is connected with the first profiled part, and the first straight subpart is connected with the first profiled part. The second bending subpart is connected with the second profiled part, and the second straight subpart is connected with the second profiled part.

3. A smelting system for non-ferrous metals as claimed in claim 2 wherein, The cross section of the first bent sub is circular arc, and the cross section of the second bent sub is circular arc.

4. A smelting system for non-ferrous metals as claimed in claim 1 wherein, The primary filtering device further comprises a linkage assembly arranged between the rotating shaft and the dredging plate, so that when the driving member drives the rotating shaft to rotate, the dredging plate reciprocates towards the filtering plate.

5. A smelting system for non-ferrous metals as claimed in claim 4 wherein, The linkage assembly comprises a connecting rod, a rotating disc, and a first bevel gear and a second bevel gear concentrically connected with the rotating disc and the rotating shaft respectively, and the first bevel gear is engaged with the second bevel gear. One end of the connecting rod is connected with the dredging plate, and the other end is rotatably connected to one side of the rotating disc away from the first bevel gear, so that when the driving member drives the rotating shaft to rotate, the rotating disc and the connecting rod drive the dredging plate to reciprocate towards the filtering plate through the transmission between the first bevel gear and the second bevel gear.

6. A smelting system for non-ferrous metals as claimed in claim 5 wherein, The shell is further provided with a sliding groove for the dredging plate to slide.

7. A smelting system for non-ferrous metals as claimed in claim 1 wherein, The driving member is arranged outside the shell.

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