Device and method for removing magnetic foreign matters on cut tobacco conveying line

Abstract

The invention discloses a device and a method for removing magnetic foreign matters on a cut tobacco conveying line. The removing device comprises an input belt, a conveyor, a hopper, a cover plate, a cavity, an electromagnet, an air box, a mounting plate, an output belt and the like, a hopper is arranged at a cut tobacco blanking part of the input belt, a cavity is arranged below the hopper, an air box is arranged at the front part in the cavity, an electromagnet is arranged at the rear part, and cut tobacco falls onto the output belt at the middle part; the cavity is connected with a conveyor rack on the output belt through a mounting plate; the electric wire tube of the electromagnet is electrified to excite magnetism to adsorb magnetic foreign matters in the tobacco shreds, compressed air is jetted to the falling tobacco shreds through the air holes in the air box, so that tobacco shred materials are closer to the electromagnet during falling, and the adsorption effect of the electromagnet on the magnetic foreign matters is improved. The magnetic foreign matter removing device is used on a cut tobacco production line, removes magnetic foreign matter such as ferrite and iron element alloy in materials such as cut tobacco, can also be used on a redrying line in tobacco processing, and has the advantages of being simple in structure, remarkable in removing effect and the like.

Description

Technical Field

[0001] The invention belongs to the field of tobacco, relates to cigarette production technology, and specifically relates to a device and method for removing magnetic foreign matter on a tobacco conveying line. Background Art

[0002] In the tobacco processing industry, the process of removing tobacco foreign matter is very important. For example, in the leaf threshing and redrying process, on the tobacco leaf sorting and leaf threshing and redrying lines, strict procedures and scientific means are adopted to remove tobacco foreign matter such as hemp, polystyrene film, metal, feathers and wool, gravel, paper scraps, straw and other non-tobacco debris; similarly, in the redrying tobacco leaf making process, scientific instruments such as foreign matter removal machines are still needed to remove tobacco foreign matter in order to ensure the high purity and quality of the tobacco. Even so, the research on tobacco foreign matter removal has not stopped.

[0003] For example, in the tobacco production line, due to equipment repair and maintenance, parts such as small screws and nuts, or even micro tools, etc. may be left out in the equipment or on the production line occasionally; or due to equipment wear, iron filings from some parts may fall on the tobacco production line and mix with the tobacco; or due to sudden equipment failure, the debris of parts may fall into the tobacco, etc. When the tobacco is transported to the downstream rolling process, such foreign objects containing iron metals are often found in tobacco, or they are all magnetic.

[0004] Although this type of magnetic foreign matter is extremely rare in this silk production line, it cannot be ignored in order to improve the quality of cigarettes and ensure the stability of downstream equipment operation. There is still a need to further study its removal method. After analysis, it was found that the magnetic foreign matter is mainly composed of ferrite, iron alloy, etc.

[0005] The present invention is proposed to solve the above-mentioned problems. Summary of the invention

[0006] In order to solve at least one aspect of the above problems, the present invention provides a device and method for removing magnetic foreign bodies on a tobacco conveying line, the removal device includes an input belt, a conveyor, a hopper, a cover plate, a cavity, an electromagnet, a wind box, a mounting plate, an output belt, etc.; a hopper is set at the tobacco drop part of the input belt, a cavity is set below the hopper, a wind box is set at the front part of the cavity, an electromagnet is set at the rear part, and the middle part is used for the tobacco to fall onto the output belt; the cavity is connected to the conveyor frame on the output belt through the mounting plate; the electric wire tube of the electromagnet is energized to excite the magnetic adsorption of magnetic foreign bodies in the tobacco, and the air holes on the wind box are used to spray compressed air to the falling tobacco so that the tobacco material is closer to the electromagnet during the fall, thereby improving the adsorption effect of the electromagnet on magnetic foreign bodies. The present invention is used in a silk production line to remove magnetic foreign bodies such as ferrite, iron alloy, etc. in tobacco and other materials, and can also be used in a redrying line in tobacco processing, with the characteristics of simple structure and significant removal effect.

[0007] The first aspect of the present invention provides a device for removing magnetic foreign matter on a tobacco conveying line, which comprises: an input belt 1, an arc strip 2, a hopper 3, a cover plate 4, a cavity 5, an electromagnet 6, an output belt 7, a wind box 8, and a mounting plate 9;

[0008] The input belt 1 for inputting tobacco shreds is located on the input conveyor 1-1, and the output belt 7 for outputting tobacco shreds is located on the output conveyor 7-1;

[0009] The hopper 3 is arranged at the downstream part of the input belt 1 where the tobacco is dropped, the cavity 5 is arranged below the hopper 3, the wind box 8 is arranged at the downstream part of the cavity 5, the hollow part in the middle of the cavity 5 is used for the tobacco to drop onto the output belt 7, and the electromagnet 6 is arranged on the side of the cavity 5 away from the wind box 8;

[0010] The electromagnet 6 is connected to an electric wire tube 6-1;

[0011] The wind box 8 has an air hole 8-2, and the wind box 8 is connected to the air pipe 8-1;

[0012] The cover plate 4 is connected to the hopper 3 and the cavity 5 respectively, and the arc bar 2 is welded below the hopper 3;

[0013] The cavity 5 is connected to the frame of the output conveyor 7 - 1 via a mounting plate 9 .

[0014] Preferably, the cavity 5 is designed with an electromagnet slot 5-1 and a wind box slot 5-4, and the cavity 5 is specifically provided with an electromagnet threaded hole 5-2, a cover threaded hole 5-3, a wind box threaded hole 5-5, and a mounting plate threaded hole 5-6;

[0015] The electromagnet 6 is installed in the electromagnet slot 5-1 through the electromagnet threaded hole 5-2;

[0016] The wind box 8 is installed in the wind box slot 5-4 through the wind box threaded hole 5-5;

[0017] The cover plate 4 has a first mounting hole 4-2, and the cover plate 4 and the cavity 5 are connected by a first mounting screw 4-1 through the first mounting hole 4-2 and the cover plate threaded hole 5-3;

[0018] The threaded holes 5 - 6 of the mounting plate are designed on the outside of the cavity 5 , and the mounting plate 9 is connected to the cavity 5 through the threaded holes 5 - 6 of the mounting plate by using second mounting screws 9 - 1 .

[0019] The cavity 5 is made of aluminum alloy.

[0020] Preferably, the wind box 8 is a rectangular parallelepiped with a hollow interior, and matches the size of the wind box slot 5 - 4 of the cavity 5 ;

[0021] The air holes 8-2 are evenly distributed on the side of the wind box 8, and the air pipe 8-1 is installed at one end of the wind box 8 for compressed air injection;

[0022] The wind box 8 has a third mounting hole 8-3, and the third mounting hole 8-3 and the wind box threaded hole 5-5 are matched. The wind box 8 is installed in the wind box groove 5-4 through the third mounting hole 8-3 and the wind box threaded hole 5-5.

[0023] Preferably, the size of the electromagnet 6 matches the size of the electromagnet slot 5 - 1 of the cavity 5 ;

[0024] The electric wire tube 6-1 of the electromagnet 6 is used to turn on the power switch to control the magnetism of the electromagnet 6;

[0025] The electromagnet 6 has a second mounting hole 6-2, and the second mounting hole 6-2 and the electromagnet threaded hole 5-2 are matched. The electromagnet 6 is installed in the electromagnet slot 5-1 through the second mounting hole 6-2 and the electromagnet threaded hole 5-2.

[0026] Preferably, the mounting plate 9 has a fourth mounting hole 9-2 and a fifth mounting hole 9-3;

[0027] The fourth mounting hole 9-2 and the mounting plate threaded hole 5-6 are configured, and the mounting plate 9 is connected to the cavity 5 through the fourth mounting hole 9-2 and the mounting plate threaded hole 5-6;

[0028] The fifth mounting hole 9-3 and the conveyor frame 7-1 are configured.

[0029] Preferably, the cover plate 4 and the hopper 3 are connected by welding.

[0030] Preferably, the arc bar 2 is welded below the hopper 3 , and the arc radius of the arc bar 2 is R10 mm, so that the falling tobacco does not rub against the electromagnet 6 .

[0031] The second aspect of the present invention provides a method for removing magnetic foreign matter on a tobacco conveyor line, using the device for removing magnetic foreign matter on a tobacco conveyor line described in the first aspect of the present invention, comprising: unprocessed tobacco is input through the input belt 1, and when the tobacco passes through the input belt 1 and enters the hopper 3, the electric wire tube 6-1 of the electromagnet 6 is energized to excite the magnetic adsorption of magnetic foreign matter in the tobacco; the air pipe 8-1 is opened to spray compressed air to the falling tobacco through the air holes 8-2 on the wind box 8, so as to make the tobacco material closer to the electromagnet 6 during the falling process, so as to enhance the adsorption effect of magnetic foreign matter; the tobacco after the magnetic foreign matter is removed is output through the output belt 7.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. On the silk production line, due to equipment repair and maintenance, equipment wear and sudden failures, small parts such as screws and nuts are left inside the equipment or on the production line, or iron filings on some parts fall on the silk production line and mix with the tobacco, which is extremely difficult to detect or remove. The present invention can effectively solve this problem.

[0034] 2. Since the tobacco of the present invention enters the trapezoidal hopper through the input belt, and the hollow part of the cavity is directly below the trapezoidal hopper, the tobacco material falls onto the output belt smoothly, and the air holes on the wind box spray compressed air to the falling tobacco, there is almost no risk of tobacco material jamming and other failures, thereby improving the stability of the production line.

[0035] 3. As arc strips are welded at the outlet below the hopper, such as arc radius R10mm, the tobacco is kept at a certain distance from the electromagnet during the falling process, thus avoiding direct friction with the electromagnet and preventing foreign matter adsorbed on the electromagnet from being carried away by the falling tobacco material, thereby improving the adsorption effect of the electromagnet.

[0036] 4. Since the magnetism of the electromagnet is generated by electric current, it can be controlled by the switch of the wire tube. When the power is off, the magnetic material adsorbed on the electromagnet is easy to fall off or clean, so maintenance is convenient. Furthermore, since a wind box is installed in the cavity, the air pipe can be used to make the air holes on the wind box spray compressed air to the falling tobacco, so that the tobacco material is closer to the electromagnet during the fall, and the airflow is controllable, thereby improving the adsorption effect of magnetic foreign matter.

[0037] 5. According to the principles of physics, all magnetic materials will be attracted by electromagnets. Of course, such magnetic materials also include materials that can generate magnetism under the action of a magnetic field, or tobacco materials containing static foreign matter, including dust that is invisible to the naked eye, etc., which can all be attracted by electromagnets. Therefore, the device and method for removing magnetic foreign matter on the tobacco conveyor line of the present invention are of great significance to improving the quality of tobacco and cigarettes. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0039] In the attached picture:

[0040] Figure 1 This is a schematic diagram of the principle of a device for removing magnetic foreign matter on a tobacco conveying line according to an embodiment of the present invention;

[0041] Figure 2 Schematic diagram of the installation of a magnetic foreign body removal device on a conveyor frame according to an embodiment of the present invention;

[0042] Figure 3 It is a schematic diagram of the design of the hopper according to an embodiment of the present invention;

[0043] Figure 4 It is a schematic diagram of the design of the cover plate of the present invention;

[0044] Figure 5 It is a schematic diagram of welding of the cover plate and the hopper of the present invention;

[0045] Figure 6 It is a schematic diagram of the design of the wind box of the present invention;

[0046] Figure 7 It is a schematic diagram of the design of the electromagnet of the present invention;

[0047] Figure 8 It is a schematic diagram of the design of the mounting plate of the present invention;

[0048] Fig. 9 It is a schematic diagram of the design of the cavity of the present invention.

[0049] The names corresponding to the figure marks in the accompanying drawings are: 1. input belt; 1-1. input conveyor; 2. arc bar; 3. hopper; 4. cover plate; 4-1. first mounting screw; 4-2. first mounting hole; 5. cavity; 5-1. electromagnet slot; 5-2. electromagnet threaded hole; 5-3. cover plate threaded hole; 5-4. wind box slot; 5-5. wind box threaded hole; 5-6. mounting plate threaded hole; 6. electromagnet; 6-1. wire tube; 6-2. second mounting hole; 7. output belt; 7-1. output conveyor; 8. wind box; 8-1. air pipe; 8-2. air hole; 8-3. third mounting hole; 9. mounting plate; 9-1. second mounting screw; 9-2. fourth mounting hole; 9-3. fifth mounting hole. DETAILED DESCRIPTION

[0050] The present invention is further described in detail below in conjunction with embodiments.

[0051] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0052] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0056] Example

[0057] See the figures.

[0058] In order to solve the problem of removing magnetic foreign bodies on a tobacco production line, the present invention provides a device and method for removing magnetic foreign bodies on a tobacco conveying line. The device for removing magnetic foreign bodies on a tobacco conveying line comprises an input belt 1, an input conveyor 1-1, an arc bar 2, a hopper 3, a cover plate 4, a cavity 5, an electromagnet slot 5-1, a wind box slot 5-4, an electromagnet 6, an electric wire tube 6-1, an output belt 7, an output conveyor 7-1, a wind box 8, an air pipe 8-1, an air hole 8-2, a mounting plate 9, etc.

[0059] A hopper 3 is arranged in front of the input belt 1 for conveying tobacco, a cavity 5 is arranged below the hopper 3, a wind box 8 is arranged in the front part of the cavity 5, the hollow part in the middle is used for tobacco to fall onto the output belt 7, and an electromagnet 6 is arranged in the rear part;

[0060] When the tobacco shreds pass through the input belt 1 and enter the hopper 3, the electric wire tube 6-1 of the electromagnet 6 is energized to excite the magnetic absorption of magnetic foreign matter in the tobacco shreds; the air pipe 8-1 is opened to spray compressed air to the falling tobacco shreds through the air holes 8-2 on the air box 8, so as to make the tobacco shreds closer to the electromagnet 6 during the falling process, so as to enhance the absorption effect of magnetic foreign matter;

[0061] The cover plate 4 and the hopper 3 are connected by welding. An arc bar 2 with a radius of R10mm is welded below the hopper 3 so that the falling tobacco does not rub against the electromagnet 6. The cover plate 4 is connected to the cover plate threaded hole 5-3 on the cavity 5 through the first mounting hole 4-2.

[0062] Implementation example Figure 1 , 2 、3.

[0063] The width of the input belt 1 on the input conveyor 1-1 is 1000mm, and the tobacco flow rate is 10t / h. The hopper is designed as a trapezoidal structure, with upper and lower bottom lengths of 1100mm and 800mm respectively, upper and lower bottom widths of 230mm and 150mm respectively, and the height of the trapezoidal structure is 100mm. Obviously, the size of the drop opening at the bottom of the trapezoidal hopper is 800×150 (mm). In order to prevent the tobacco from rubbing against the electromagnet 6 when falling from the drop opening or to keep a certain distance between the falling tobacco and the electromagnet 6, such as 10mm, a circular arc bar 2 is designed or welded and installed at the tobacco outlet, and the arc radius is R10mm, such as Figure 3 State.

[0064] like Figure 4 The cover plate 4 is designed to connect the hopper 3 and the cavity 5. The first mounting hole 4-2 on the cover plate 4 and the cover plate threaded hole 5-3 on the cavity 5 are made in pairs and are installed with the first mounting screw 4-1. The screw used is M6. The connection method between the cover plate 4 and the hopper 3 is welding, such as Figure 5 State.

[0065] The cavity 5 is connected to the output conveyor 7 - 1 frame of the output belt 7 through the mounting plate 9 .

[0066] like Figure 8 As described above, the design of the mounting plate 9. The fourth mounting hole 9-2 is matched with the mounting plate threaded hole 5-6 on the cavity 5, and the fifth mounting hole 9-3 is matched with the conveyor frame 7-1, and is installed with the second mounting screw 9-1, and the connecting screw uses M6.

[0067] An electromagnet slot 5-1 and an electromagnet threaded hole 5-2 are designed in the cavity 5 for installing the electromagnet 6; a wind box slot 5-4 and a wind box threaded hole 5-5 are designed in the cavity 5 for installing the wind box 8; a mounting plate threaded hole 5-6 is designed on the outside of the cavity 5 for connecting the mounting plate 9; the cavity is made of aluminum alloy.

[0068] like Fig. 9 The cavity 5 is designed with aluminum alloy. The center of the cavity 5 is designed with a through hole matched with the trapezoidal hopper drop port. The through hole size is 800×150 (mm) for tobacco falling. Wind box slots 5-4 and electromagnet slots 5-1 are designed on both sides of the through hole. Wind box slots 5-4 and wind box threaded holes 5-5 are designed inside the cavity 5 to install wind box 8. The wind box slots 5-4 are matched with wind box 8 in terms of length, width, height (depth), and wind box threaded holes 5-5 are matched with installation through holes 8-3 on wind box 8.

[0069] The electromagnet slot 5-1 and the electromagnet threaded hole 5-2 are designed to install the electromagnet 6. The dimensions of the electromagnet slot 5-1 such as length, width, height (depth) are matched with the electromagnet 6. The electromagnet threaded hole 5-2 is matched with the second installation hole 6-2 on the electromagnet 6.

[0070] The wind box 8 is a rectangular parallelepiped with a hollow interior and matches the size of the wind box slot 5-4 of the cavity 5. Air holes 8-2 are evenly distributed on the side of the wind box 8, and an air pipe 8-1 is installed at one end for compressed air injection.

[0071] like Figure 6 The wind box 8 is made of 2mm thick stainless steel plate and welded into a rectangular parallelepiped. A plurality of evenly distributed wind holes 8-2 with a diameter of ￠2mm are designed on the side of the rectangular parallelepiped. Figure 6 The number is 7×59, and the spacing is 6 to 10 mm; a through hole is designed at one end of the wind box 8 and the air pipe 8-1 is welded, and the wind box 8 is designed to be installed in the third mounting hole 8-3 on the wind box slot 5-4 in the cavity 5.

[0072] The size of the electromagnet 6 matches the size of the electromagnet slot 5 - 1 of the cavity 5 , and the magnetism of the electromagnet 6 is controlled by turning on the power switch using the wire tube 6 - 1 of the electromagnet 6 .

[0073] Figure 7As described above, the electromagnet 6 is designed to be a rectangular parallelepiped structure, and its geometric dimensions are matched with the electromagnet slot 5-1 on the cavity 5. The electromagnet 6 can also adopt the product dimensions of the manufacturer and design the matching dimensions of the electromagnet slot 5-1.

[0074] To sum up, in the above embodiment, the air pipe 8-1 is connected to the compressed gas pipeline used in the workshop, and the air injected in the air hole 8-2 will make the falling tobacco closer to the side of the electromagnet 6; the wire tube 6-1 on the electromagnet 6 is connected to the electronic switch, which makes the electromagnet 6 magnetic so as to absorb the magnetic foreign matter on the tobacco conveying line. After a certain period of time, the power supply on the wire tube 6-1 is turned off, and the magnetic foreign matter on the electromagnet 6 will either fall off or be easy to clean.

[0075] The method for removing magnetic foreign bodies on the tobacco conveyor line comprises: unprocessed tobacco is input through the input belt 1, and when the tobacco passes through the input belt 1 and enters the hopper 3, the electric wire tube 6-1 of the electromagnet 6 is energized to excite the magnetic adsorption of magnetic foreign bodies in the tobacco; the air pipe 8-1 is opened to spray compressed air to the falling tobacco through the air holes 8-2 on the wind box 8, so that the tobacco material is closer to the electromagnet 6 during the falling process, so as to enhance the adsorption effect of magnetic foreign bodies; the tobacco after the magnetic foreign bodies are removed is output through the output belt 7.

[0076] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. The structures and connection modes of the components in the present invention can be changed, and any equivalent transformations and improvements based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A device for removing magnetic foreign matter on a tobacco conveying line, characterized in that: It includes: Input Belt (1), arc strip (2), hopper (3), cover plate (4), cavity (5), electromagnet (6), output belt (7), wind box (8), mounting plate (9); The input belt (1) for inputting tobacco shreds is located on an input conveyor (1-1), and the output belt (7) for outputting tobacco shreds is located on an output conveyor (7-1); The hopper (3) is arranged at the downstream part of the input belt (1) where the tobacco is dropped, the cavity (5) is arranged below the hopper (3), the wind box (8) is arranged at the downstream part of the cavity (5), the hollow part in the middle of the cavity (5) is used for the tobacco to drop onto the output belt (7), and the electromagnet (6) is arranged on the side of the cavity (5) away from the wind box (8); The electromagnet (6) is connected to an electric wire tube (6-1); The wind box (8) has an air hole (8-2), and the wind box (8) is connected to the air pipe (8-1); The cover plate (4) is connected to the hopper (3) and the cavity (5) respectively, and the arc strip (2) is welded below the hopper (3); The cavity (5) is connected to the frame of the output conveyor (7-1) via a mounting plate (9).

2. The device for removing magnetic foreign matter on a tobacco conveying line according to claim 1 is characterized in that: The cavity (5) is designed with an electromagnet slot (5-1) and a wind box slot (5-4), and the cavity (5) is provided with an electromagnet threaded hole (5-2), a cover plate threaded hole (5-3), a wind box threaded hole (5-5), and a mounting plate threaded hole (5-6); The electromagnet (6) is installed in the electromagnet slot (5-1) through the electromagnet threaded hole (5-2); The wind box (8) is installed in the wind box groove (5-4) through the wind box threaded hole (5-5); The cover plate (4) has a first mounting hole (4-2), and the cover plate (4) and the cavity (5) are connected by a first mounting screw (4-1) through the first mounting hole (4-2) and the cover plate threaded hole (5-3); The threaded hole (5-6) of the mounting plate is designed outside the cavity (5), and the mounting plate (9) is connected to the cavity (5) through the threaded hole (5-6) of the mounting plate by a second mounting screw (9-1). The cavity (5) is made of aluminum alloy.

3. The device for removing magnetic foreign matter on the tobacco conveying line according to claim 2 is characterized in that: The wind box (8) is a rectangular parallelepiped with a hollow interior and matches the size of the wind box slot (5-4) of the cavity (5); The air holes (8-2) are evenly distributed on the side of the wind box (8), and the air pipe (8-1) is installed at one end of the wind box (8) for compressed air injection; The wind box (8) has a third mounting hole (8-3), the third mounting hole (8-3) and the wind box threaded hole (5-5) are matched, and the wind box (8) is installed in the wind box groove (5-4) through the third mounting hole (8-3) and the wind box threaded hole (5-5).

4. The device for removing magnetic foreign matter on a tobacco conveying line according to claim 2 is characterized in that: The size of the electromagnet (6) matches the size of the electromagnet slot (5-1) of the cavity (5); Using the electric wire tube (6-1) of the electromagnet (6) to turn on a power switch to control the magnetism of the electromagnet (6); The electromagnet (6) has a second mounting hole (6-2), the second mounting hole (6-2) and the electromagnet threaded hole (5-2) are matched, and the electromagnet (6) is mounted in the electromagnet slot (5-1) through the second mounting hole (6-2) and the electromagnet threaded hole (5-2).

5. The device for removing magnetic foreign matter on a tobacco conveying line according to claim 2, characterized in that: The mounting plate (9) is provided with a fourth mounting hole (9-2) and a fifth mounting hole (9-3); The fourth mounting hole (9-2) and the mounting plate threaded hole (5-6) are configured, and the mounting plate (9) is connected to the cavity (5) via the fourth mounting hole (9-2) and the mounting plate threaded hole (5-6); The fifth mounting hole (9-3) and the conveying frame (7-1) are configured.

6. The device for removing magnetic foreign matter on a tobacco conveying line according to claim 1, characterized in that: The cover plate (4) and the hopper (3) are connected by welding.

7. The device for removing magnetic foreign matter on a tobacco conveying line according to claim 1, characterized in that: The arc strip (2) is welded below the hopper (3), and the arc radius of the arc strip (2) is R10mm, so that the falling tobacco does not rub against the electromagnet (6).

8. A method for removing magnetic foreign matter from a tobacco conveying line, characterized in that: The device for removing magnetic foreign matter on a tobacco conveyor line according to any one of claims 1 to 7 comprises: unprocessed tobacco is input through the input belt (1), and when the tobacco passes through the input belt (1) and enters the hopper (3), the electric wire tube (6-1) of the electromagnet (6) is energized to excite magnetic adsorption of magnetic foreign matter in the tobacco; the air pipe (8-1) is opened to spray compressed air to the falling tobacco through the air holes (8-2) on the wind box (8), so as to make the tobacco material closer to the electromagnet (6) during the falling process, so as to enhance the adsorption effect of magnetic foreign matter; the tobacco after the magnetic foreign matter is removed is output through the output belt (7).

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