Iron removal equipment before ultrafine grinding of slag roller vertical mill combined with ball mill

Abstract

This invention discloses a slag roller vertical mill combined with ball mill ultrafine powder milling pre-iron removal equipment in the field of slag iron removal technology, including a base for installing iron removal actuators; a screening cylinder mounted on top of the base via a mounting frame, the screening cylinder consisting of an upper arc segment and a lower rectangular segment; a feed inlet is provided in the middle of the top of the arc segment, and a first and second discharge outlets are provided on both sides of the feed inlet at the bottom of the rectangular segment, the first and second discharge outlets being used to output slag material and iron material respectively; spiral blades are coaxially arranged with the arc segment and rotatably mounted with the mounting frame via bearings; a conveying cylinder coaxially arranged with the spiral blades and sleeved inside the spiral blades; an electromagnet installed inside the conveying cylinder; and a first driving mechanism; this invention can more completely remove iron material from slag.

Description

Technical Field

[0001] This invention relates to the field of slag iron removal technology, specifically to an iron removal device for slag roller vertical mill combined with ball mill ultrafine powder grinding. Background Technology

[0002] During slag grinding, the elemental iron and iron oxide in the slag can cause accelerated wear of the mill, reduce grinding efficiency, and even lead to safety accidents. It can also have an adverse effect on the mill's output. Therefore, in order to improve the quality and output of slag powder, extend the service life of the mill, and reduce safety accidents, it is necessary to carry out iron removal treatment before slag grinding.

[0003] Existing iron removal equipment typically uses electromagnets to attract iron particles. As more and more iron particles adhere to the surface of the electromagnet, the attraction force on the outer layer of iron particles gradually decreases. This makes it easy for the slag to carry away the outer layer of iron particles when impacting them, resulting in incomplete iron removal. Furthermore, to remove iron particles from the surface of the electromagnet, the equipment needs to be shut down. The iron particles will automatically fall off after the electromagnet is de-energized, and the equipment can only continue to work. This significantly reduces the efficiency of slag iron removal.

[0004] Based on this, the present invention designs an iron removal device before ultrafine grinding of slag roller vertical mill combined with ball mill to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an iron removal device before ultrafine grinding of slag roller vertical mill combined with ball mill, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an iron removal device before ultrafine grinding of slag roller vertical mill combined with ball mill, comprising a base for mounting iron removal actuators; a screening cylinder mounted on top of the base via a mounting frame, the screening cylinder consisting of an upper arc segment and a lower rectangular segment; a feed inlet is provided in the middle of the top of the arc segment, and a first discharge port and a second discharge port are provided on both sides of the feed inlet at the bottom of the rectangular segment, the first discharge port and the second discharge port being used to output slag material and iron material respectively; spiral blades are coaxially arranged with the arc segment and rotatably mounted with the mounting frame via bearings; a conveying cylinder coaxially arranged with the spiral blades and sleeved inside the spiral blades; an electromagnet installed inside the conveying cylinder; and a first driving mechanism for driving the spiral blades to rotate and convey iron material adhering to the surface of the conveying cylinder.

[0007] As a further embodiment of the present invention, the first driving mechanism includes a first bevel gear and a first motor capable of driving the first bevel gear to rotate, the first bevel gear meshing with a second bevel gear, and the second bevel gear being fixedly mounted on the rotating shaft of the spiral blade.

[0008] As a further embodiment of the present invention, the screening cylinder is arranged at an angle, and the first discharge port is located below the second discharge port.

[0009] As a further embodiment of the present invention, a plurality of screening plates are rotatably mounted on the inner side of the screening cylinder, and a torsion spring for resetting is fitted on the rotation shaft of the screening plate.

[0010] As a further embodiment of the present invention, the rotating shafts of the screening plates all extend to the outside of the screening cylinder and are fixedly connected to a first gear. Each of the first gears meshes with an incomplete gear. Each of the incomplete gears is rotatably connected to the screening cylinder. Each of the rotating shafts of the incomplete gears is fixedly connected to a first sprocket. Multiple first sprockets are connected to a first chain for transmission. A second driving mechanism for driving multiple first sprockets to rotate synchronously is provided on the top of the base.

[0011] As a further embodiment of the present invention, the second drive mechanism includes a second sprocket, which is fixedly mounted on the rotating shaft of the rightmost incomplete gear; the second sprocket is connected to a third sprocket via a second chain drive, and the third sprocket is connected to a second motor drive.

[0012] As a further embodiment of the present invention, the screening plate is made of an electromagnet, and conductive blocks are fixedly connected to both ends of the screening plate; a conductive body is fixedly installed at the bottom of the screening cylinder; the conductive body is located above the conductive blocks.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This invention, through the arrangement of a screening cylinder, spiral blades, and a conveying cylinder, by setting the screening cylinder to consist of an arc-shaped section and a rectangular section, with the inner diameter of the arc-shaped section being similar to the outer diameter of the spiral blades, allows the slag fed into the screening cylinder to completely slide down through the gap between the screening cylinder and the spiral blades. Furthermore, the rotation of the spiral blades causes the slag to slosh fully on the surface of the conveying cylinder. The iron in the slag is attracted to the surface of the conveying cylinder under the action of an electromagnet, while the slag slides down to the rectangular section under gravity and then falls out of the first discharge port. The spiral blades convey the iron on the surface of the conveying cylinder to the right and then fall out of the second discharge port, ensuring that the iron on the surface of the conveying cylinder does not accumulate excessively and allowing for more complete removal of the iron.

[0015] 2. By setting up a conductor and a conductive block, the electromagnet screening plate can form a path with the conductor through the conductive block after the screening plate rotates, so that the electromagnet screening plate can become magnetic and attract iron material, which can better ensure that the slag falling from the first discharge port does not carry iron material; then when the screening plate rebounds, the screening plate can throw the iron material up and make the iron material adsorbed at the bottom of the conveying cylinder, so that the iron material can be removed more completely. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0018] Figure 3 This is a cross-sectional view (front view) of the overall structure of the present invention;

[0019] Figure 4 for Figure 3 Diagram of the section cut at point AA;

[0020] Figure 5 This is a schematic diagram of the spiral blade, conveying cylinder, and electromagnet structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the screening plate and its structure according to the present invention.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Base, 2. Mounting frame, 3. Screening cylinder, 4. Feed inlet, 5. Spiral blade, 6. Conveying cylinder, 7. Electromagnet, 8. First discharge port, 9. Second discharge port, 10. First bevel gear, 11. First motor, 12. Screening plate, 13. Torsion spring, 14. First gear, 15. Incomplete gear, 16. First sprocket, 17. First chain, 18. Second sprocket, 19. Third sprocket, 20. Second motor, 21. Conductor, 22. Conductive block, 23. Second bevel gear, 24. Detailed Implementation

[0024] Please see Figure 1-6This invention provides a technical solution: an iron removal device before ultrafine grinding of slag roller vertical mill combined with ball mill, comprising a base 1 for mounting iron removal actuators; a screening cylinder 3, which is mounted on the top of the base 1 via a mounting frame 2, the screening cylinder 3 being composed of an arc segment at the upper end and a rectangular segment at the lower end; a feed inlet 4 is provided in the middle of the top of the arc segment, and a first discharge port 8 and a second discharge port 9 are provided on both sides of the feed inlet 4 at the bottom of the rectangular segment, the first discharge port 8 and the second discharge port 9 being used to output slag material and iron material respectively; spiral blades 5, the spiral blades 5 being coaxially arranged with the arc segment and rotatably mounted with the mounting frame 2 via bearings; a conveying cylinder 6, which is coaxially arranged with the spiral blades 5 and sleeved inside the spiral blades 5; an electromagnet 7, which is installed inside the conveying cylinder 6; and a first driving mechanism, which is used to drive the spiral blades 5 to rotate and convey the iron material adhering to the surface of the conveying cylinder 6.

[0025] During operation, slag is fed into the arc section of the screening cylinder 3 through the feed inlet 4; as... Figure 4 As shown, since the outer diameter of the spiral blade 5 is similar to the inner diameter of the arc segment, the slag entering the screening cylinder 3 will fall downwards between the spiral blade 5 and the conveying cylinder 6, while the material inside the slag will adhere to the surface of the conveying cylinder 6 under the magnetic attraction of the electromagnet 7. In actual use, the size of the spiral blade 5 can be selected according to the size of the slag particles, so that the slag can fully contact the conveying cylinder 6, and the iron material can be more completely adsorbed on the surface of the conveying cylinder 6. Other slag that cannot be adsorbed by the electromagnet 7 will slide down into the rectangular segment of the screening cylinder 3 under the action of gravity, and then the slag will fall out from the first discharge port 8. At the same time as slag is fed into the screening cylinder 3, the first drive mechanism will drive the spiral blade 5 to rotate, such as Figure 3 As shown, the rotation of the spiral blade 5 will convey the iron material adsorbed on the surface of the conveying cylinder 6 to the right. It should be noted that, as Figure 5As shown, since the electromagnet 7 is only located on the left side of the conveying cylinder 6, when the iron material on the conveying cylinder 6 moves above the second discharge port 9, the iron material moves to the right side of the electromagnet 7, the magnetic force of the electromagnet 7 disappears, and the iron material falls from the second discharge port 9. This invention, through the arrangement of the screening cylinder 3, the spiral blade 5, and the conveying cylinder 6, by setting the screening cylinder 3 to consist of an arc-shaped section and a rectangular section, and with the inner diameter of the arc-shaped section being similar to the outer diameter of the spiral blade 5, allows the slag fed into the screening cylinder 3 to completely slide down through the gap between the screening cylinder 3 and the spiral blade 5. Furthermore, the rotation of the spiral blade 5 allows the slag to fully sway on the surface of the conveying cylinder 6. The iron material in the slag will be attracted to the surface of the conveying cylinder 6 under the action of the electromagnet 7, while the slag will slide down to the rectangular section under gravity and then fall from the first discharge port 8. The spiral blade 5 will convey the iron material on the surface of the conveying cylinder 6 to the right and then drop it from the second discharge port 9, ensuring that the iron material on the surface of the conveying cylinder 6 does not accumulate excessively and allowing for more complete removal of the iron material.

[0026] As a further embodiment of the present invention, the first driving mechanism includes a first bevel gear 10 and a first motor 11 capable of driving the first bevel gear 10 to rotate. The first bevel gear 10 meshes with a second bevel gear 24, and the second bevel gear 24 is fixedly mounted on the rotating shaft of the spiral blade 5.

[0027] At work, such as Figure 1 and Figure 3 As shown, when the first drive mechanism is working, the first motor 11 will drive the first bevel gear 10 to rotate, the first bevel gear 10 will drive the second bevel gear 24 to rotate, and the second bevel gear 24 will drive the spiral blade 5 to rotate.

[0028] As a further embodiment of the present invention, the screening cylinder 3 is arranged at an angle, and the first discharge port 8 is located below the second discharge port 9.

[0029] At work, such as Figure 3 As shown, the screening cylinder 3 is set in an inclined shape. After the iron material is adsorbed by the conveying cylinder 6, the slag can fall from the gap between the screening cylinder 3 and the spiral blade 5 more quickly. The slag can avoid accumulating in the rectangular section when it falls into the rectangular section and can fall quickly from the first discharge port 8.

[0030] As a further embodiment of the present invention, a plurality of screening plates 12 are rotatably mounted on the inner side of the screening cylinder 3, and a torsion spring 13 for resetting is fitted on the rotation shaft of the screening plate 12.

[0031] At work, such as Figure 3 and Figure 6As shown, after the slag falls into the rectangular section, it will be blocked by the screening plate 12. When the slag accumulates to a certain weight, the gravity of the slag will drive the screening plate 12 to rotate. After some of the slag slides to the left, the screening plate 12 will quickly bounce back upwards under the elastic force of the torsion spring 13. Figure 3 As shown, the screening plate 12 can re-elasticize the slag. The elasticity of the screening plate 12 can bounce up a small amount of iron material that has fallen into the rectangular section, so that the iron material can be adsorbed at the bottom of the conveying cylinder 6, which can make the iron material screening more complete.

[0032] As a further embodiment of the present invention, the rotating shafts of the screening plates 12 all extend to the outside of the screening cylinder 3 and are fixedly connected to a first gear 14. Each of the first gears 14 meshes with an incomplete gear 15. Each of the incomplete gears 15 is rotatably connected to the screening cylinder 3. Each of the rotating shafts of the incomplete gears 15 is fixedly connected to a first sprocket 16. Multiple first sprockets 16 are connected to a first chain 17 for transmission. A second driving mechanism for driving multiple first sprockets 16 to rotate synchronously is provided on the top of the base 1.

[0033] The second drive mechanism includes a second sprocket 18, which is fixedly mounted on the rotating shaft of the rightmost incomplete gear 15; the second sprocket 18 is connected to a third sprocket 20 via a second chain 19, and the third sprocket 20 is connected to a second motor 21.

[0034] At work, such as Figure 1 , Figure 2 and Figure 6 As shown, when the second motor 21 is working, it can drive the third sprocket 20 to rotate. The third sprocket 20 will drive the second sprocket 18 to rotate synchronously through the second chain 19. The second sprocket 18 will drive the rightmost incomplete gear 15 to rotate synchronously. The rightmost incomplete gear 15 will drive the other incomplete gears 15 to rotate synchronously through the first sprocket 16 and the first chain 17. When the incomplete gear 15 meshes with the first gear 14, the incomplete gear 15 will drive the first gear 14 to rotate. The first gear 14 will drive the screening plate 12 to rotate to the lower left until the incomplete gear 15 rotates to disengage from the first gear 14. At this point, the screening plate 12 will quickly rebound under the elastic force of the torsion spring 13. Figure 3 The location shown; it should be noted that, as Figure 6As shown, the first and third incomplete gears 15 from the left are in the same position, and the second and fourth incomplete gears 15 from the left are in the same position. When the second and fourth incomplete gears 15 from the left are engaged with the first gear 14, the first and third incomplete gears 15 are not engaged with the first gear 14. Conversely, when the second and fourth incomplete gears 15 rotate to disengage from the first gear 14, the first and third incomplete gears 15 rotate to the position of engaging with the first gear 14. Through the intermittent rotation of multiple screening plates 12, the slag in the rectangular section can be bounced up multiple times, so that the small amount of iron material carried in the slag can come into contact with the conveying cylinder 6 as much as possible, and the iron material can be removed more completely.

[0035] As a further embodiment of the present invention, the screening plate 12 is made of an electromagnet, and conductive blocks 23 are fixedly connected to both ends of the screening plate 12; a conductive body 22 is fixedly installed at the bottom of the screening cylinder 3; the conductive body 22 is located above the conductive blocks 23.

[0036] At work, such as Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the screening plate 12 is made of an electromagnet, and the conductor 22 is used to energize the screening plate 12. When the incomplete gear 15 drives the screening plate 12 to rotate through the first gear 14, the screening plate 12 will drive the conductive block 23 to rotate synchronously. When the conductive block 23 rotates to contact the conductor 22, the screening plate 12 is energized and generates magnetism. The iron material in the slag sliding off the screening plate 12 will be attracted by the screening plate 12, and the slag will slide down the screening plate 12 to the next screening plate 12. When the incomplete gear 15 rotates to disengage from the first gear 14, the screening plate 12 rotates upward under the action of the torsion spring 13. When the conductive block 23 rotates and disengages from the conductive body 22, the screening plate 12 loses its magnetism and is no longer energized. The screening plate 12 can then throw up the adsorbed iron material, allowing it to contact the conveying cylinder 6. Through the arrangement of the conductive body 22 and the conductive block 23, the screening plate 12, after rotating, can form a path with the conductive body 22 via the conductive block 23, enabling the electromagnet screening plate 12 to acquire magnetism and adsorb iron material. This better ensures that the slag falling from the first discharge port 8 does not carry iron material. Then, when the screening plate 12 rebounds, it can throw up the iron material, causing it to adhere to the bottom of the conveying cylinder 6, allowing for more complete removal of the iron material.

Claims

1. A slag roller vertical mill combined with a ball mill for ultrafine powder removal before grinding, characterized in that: include Base (1), the base (1) is used to install the iron removal actuator; Screening cylinder (3) is mounted on the top of base (1) by mounting bracket (2). Screening cylinder (3) consists of an arc segment at the top and a rectangular segment at the bottom. A feed inlet (4) is provided in the middle of the top of the arc segment. A first discharge port (8) and a second discharge port (9) are provided on both sides of the feed inlet (4) at the bottom of the rectangular segment. The first discharge port (8) and the second discharge port (9) are used to output slag and iron, respectively. The spiral blade (5) is coaxially arranged with the arc segment and is rotatably mounted with the mounting frame (2) through a bearing; The conveying cylinder (6) is coaxially arranged with the spiral blade (5) and sleeved on the inner side of the spiral blade (5); Electromagnet (7), said electromagnet (7) is installed inside conveying cylinder (6); The first driving mechanism is used to drive the spiral blade (5) to rotate and convey the iron material adhering to the surface of the conveying cylinder (6); Multiple screening plates (12) are rotatably mounted on the inner side of the screening cylinder (3) and are evenly distributed. A torsion spring (13) for resetting is fitted on the rotation shaft of the screening plate (12). The screening plate (12) is made of electromagnet, and conductive blocks (23) are fixedly connected to both ends of the screening plate (12); a conductor (22) is fixedly installed at the bottom of the screening cylinder (3); the conductor (22) is located above the conductive block (23).

2. The iron removal equipment before ultrafine grinding of slag roller vertical mill combined with ball mill as described in claim 1, characterized in that: The first drive mechanism includes a first bevel gear (10) and a first motor (11) capable of driving the first bevel gear (10) to rotate. The first bevel gear (10) meshes with a second bevel gear (24), and the second bevel gear (24) is fixedly mounted on the rotating shaft of the spiral blade (5).

3. The iron removal equipment before ultrafine grinding of slag roller vertical mill combined with ball mill as described in claim 1, characterized in that: The screening cylinder (3) is arranged at an angle, and the first discharge port (8) is located below the second discharge port (9).

4. The iron removal equipment before ultrafine grinding of slag roller vertical mill combined with ball mill as described in claim 3, characterized in that: The rotating shafts of the screening plates (12) all extend to the outside of the screening cylinder (3) and are fixedly connected to the first gears (14). The first gears (14) all mesh with the incomplete gears (15). The incomplete gears (15) are all rotatably connected to the screening cylinder (3). The rotating shafts of the incomplete gears (15) are all fixedly connected to the first sprockets (16). The multiple first sprockets (16) are connected to the first chain (17) for transmission. The top of the base (1) is provided with a second driving mechanism for driving the multiple first sprockets (16) to rotate synchronously.

5. The iron removal equipment before ultrafine grinding of slag roller vertical mill combined with ball mill as described in claim 4, characterized in that: The second drive mechanism includes a second sprocket (18), which is fixedly mounted on the rotating shaft of the rightmost incomplete gear (15); the second sprocket (18) is connected to a third sprocket (20) via a second chain (19), and the third sprocket (20) is connected to a second motor (21).

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