Preparation method and device of slow-release deoxidizer for sheet steel

Abstract

The invention relates to the technical field of steelmaking deoxidizing agents, in particular to a sheet steel slow-release deoxidizing agent preparation method and a device thereof.The device comprises a conveying base, the top of the conveying base is rotationally connected with a vertical screening barrel, the inner wall of the middle of the screening barrel is provided with a discharging inner barrel, and the interior of the screening barrel is symmetrically and rotationally connected with two sets of screens; a driving mechanism is arranged on the outer wall of the screening cylinder; according to the device, non-stop screening and recycling of materials are effectively achieved, operation is easy, stability and high efficiency are achieved, meanwhile, the opening position of a Y-shaped double-end feeding pipe is matched with a magnetic balance weight ball, it is guaranteed that feeding of the materials is stable, the opening position of the Y-shaped double-end feeding pipe is matched with the rotating position of a screen, and energy loss is avoided; meanwhile, different scraping rods are matched with different parts to achieve different effects, the blockage clearing performance is higher, and the recycling efficiency is higher; and when the screen is blocked, up-down vibration can be applied to the screen, so that the blockage clearing performance of the screen is improved, and the screening and recycling effects of subsequent materials are ensured.

Description

Technical Field

[0001] This invention relates to the field of steelmaking deoxidizer technology, and in particular to a method and apparatus for preparing a slow-release deoxidizer for thin plate steel. Background Technology

[0002] Currently, the deoxidizers used in production mainly include commonly used deoxidizers such as ferromanganese, ferrosilicon, and aluminum, as well as composite deoxidizers such as Al-Mg, Si-Ca-Ba, Si-Al-Fe, Si-Al-Ba-Fe, and RE-Al-Fe. Some steel plants also use synthetic slag for deoxidation. Among these, aluminum remains the most widely used deoxidizer due to its strong deoxidizing ability and low cost.

[0003] Chinese invention patent 2021100563463 discloses a method and apparatus for preparing a pharmaceutical deoxidizer. The apparatus includes a reaction vessel, a stirring paddle, and a jet pipe. The stirring paddle is rotatably installed inside the reaction vessel, and the jet pipe is installed at the bottom of the reaction vessel. The inlet of the jet pipe is located outside the reaction vessel, and the outlet of the reaction vessel is located inside the reaction vessel. This apparatus has low preparation efficiency and poor preparation effect.

[0004] Chinese invention patent 2021113920011 relates to a production apparatus and method for an environmentally friendly deoxidizer, comprising: a support base, an extrusion cylinder, a mixing cylinder, an electric telescopic rod, a piston extrusion plate, a support plate, and a forming mechanism. The extrusion cylinder is fixedly connected to the support base. The electric telescopic rod is fixedly connected to the extrusion cylinder. The mixing cylinder is fixedly connected to the electric telescopic rod. The piston extrusion plate is slidably connected to the extrusion cylinder. This preparation apparatus is difficult to operate and has low filtration and impurity removal efficiency.

[0005] First, aluminum itself has a relatively light density. When added to molten steel for deoxidation, it tends to float to the surface of the molten steel, resulting in severe aluminum burn-off and low metal yield.

[0006] The aluminum deoxidizer has an uneven particle diameter. If the particles are too large, they will cause uneven slag formation when mixed with molten steel, and will not be able to play their due role. On the contrary, the slag formation will cause the refining and slag formation time to be too long, which will affect the production rhythm. If the particles are too small, they will cause production waste. Therefore, we have proposed a new deoxidizer preparation method and its supporting equipment.

[0007] In existing devices, when materials are screened using a screen, the rotation of the screen alone cannot achieve uniform and thorough screening of the materials. In particular, when the screen holes inside the screen are blocked by materials, it will not only reduce the material feeding speed and amount, but also affect the screening of subsequent materials.

[0008] Furthermore, existing devices lack self-cleaning functions for the inner wall structure, resulting in problems such as low cleaning efficiency, poor cleaning effect, and impurities easily adhering to the surface of the internal structure.

[0009] When materials are screened and discharged without stopping the machine, existing devices lack the function of accurately detecting the verticality of the device, which reduces the material recovery effect and the accuracy and efficiency of using the screening cylinder. Summary of the Invention

[0010] To achieve the above objectives, the present invention adopts the following technical solution: a method for preparing a slow-release deoxidizer for thin plate steel, comprising the following steps:

[0011] Step 1: Prepare the ingredients before preparation. The alumina powder (Al2O3), AD powder, and steelmaking purification agent account for 60%, 30%, and 10% of the formula, respectively.

[0012] Step 2: Mix the ingredients again and form them. Then pour the mixed ingredients into a forming screen and screen them once. The screen aperture is 15mm. Particles smaller than 15mm are mixed again and formed. Particles larger than 15mm are calcined.

[0013] Step 3: After calcination, the agglomerated material is crushed. Large pieces are crushed first with a jaw crusher, and then small pieces are finely ground with a ball mill until finished particles with a diameter between 5-50mm are obtained.

[0014] A device for preparing a slow-release deoxidizer for thin plate steel, the device being used to produce the aforementioned method for preparing a slow-release deoxidizer for thin plate steel, includes a conveying base, a vertical screening cylinder rotatably connected to the top of the conveying base, a discharge inner barrel provided on the inner wall of the middle part of the screening cylinder, two sets of screens symmetrically rotatably connected inside the screening cylinder, and a driving mechanism provided on the outer wall of the screening cylinder.

[0015] The inner discharge barrel is equipped with a dual-axis motor in the middle. The top and bottom output ends of the dual-axis motor are equipped with drive shafts. The other end of the drive shaft passes through the inner discharge barrel and is slidably connected to a sliding sleeve on its outer surface. The outer surface of the sliding sleeve is equipped with a scraper. The side wall of the drive shaft and inside the inner discharge barrel is equipped with a T-shaped vent hole. The other end of the T-shaped vent hole is connected to the inside of the sliding sleeve.

[0016] The outer wall of the screening cylinder is provided with symmetrical fixed magnets near both ends. The fixed magnets have a middle pipe inside. The inner wall of the screening cylinder has a connecting pipe. The two ends of the connecting pipe are connected to the inside of the discharge inner barrel and one end of the middle pipe, respectively. The top of the conveying base and directly below the fixed magnets is provided with a positioning mechanism. The bottom of the fixed magnets and the end away from the positioning mechanism is provided with a side plate. The side plate has a corrugated pipe near the positioning mechanism. The side plate has a transmission hole inside. The two ends of the transmission hole are connected to the corrugated pipe and the middle pipe, respectively.

[0017] This device can not only achieve screening and discharge without stopping the machine, but also, when the screen becomes clogged, it can use the sleeve to drive the scraper to move up and down, thereby realizing the rotation and up and down vibration of the screen, resulting in higher cleaning efficiency and better cleaning effect.

[0018] A further feature is that a control mechanism is provided on one side of the conveying base, and a bearing seat is provided at the top center of the vertical part of the conveying base. A horizontally arranged Y-shaped double-ended feeding pipe is rotatably connected to the middle of the bearing seat. The output end of the Y-shaped double-ended feeding pipe is connected to the inside of the screening cylinder. A material distribution baffle is rotatably connected to the middle of the Y-shaped double-ended feeding pipe. A rotating shaft is provided on one side of the material distribution baffle. The rotating shaft extends horizontally outward from the outside of the Y-shaped double-ended feeding pipe. A toggle bar is provided at the end of the rotating shaft away from the material distribution baffle. A gravity magnetic block is provided at the end of the toggle bar away from the rotating shaft. Limiting blocks adapted to the gravity magnetic blocks are respectively provided on the outer wall of the Y-shaped double-ended feeding pipe near the two branches. The entire inner discharge barrel is located between the two discharge ports of the Y-shaped double-ended feeding pipe.

[0019] A further feature is that the inner circumference of the screening cylinder has annular ribs near both ends, and fixed rotating rings are rotatably connected to both annular ribs. The opposite sides of the two fixed rotating rings are fixedly connected to the outer wall of the screen by screws. The opposite sides of the two fixed rotating rings are provided with external gear rings. Gear through holes are opened at both ends of the screening cylinder near the external gear rings. A shaft bracket is provided on the outer wall of the screening cylinder near the gear through holes. A vertical rotating shaft is rotatably connected to the middle of the two shaft brackets. The opposite ends of the two rotating shafts are provided with driven gears that mesh with the external gear rings on their respective sides.

[0020] A further feature is that the conveying base is an L-shaped structure with an internal cavity, the center line of the screening cylinder intersects the center line of the bearing seat at a point, the side view of the screening cylinder is a circle with the bearing seat's axis of rotation as the center, the upper and lower surfaces of the discharge inner barrel are respectively provided with conical discharge holes that are centrally symmetrical to each other, and the interior of the discharge inner barrel is provided with two centrally symmetrical discharge pipes, the ends of the two discharge pipes near the conical discharge holes are both provided in a funnel shape.

[0021] A further feature is that the bottom upper surface of the conveying base has a mounting hole, and above the mounting hole is an arc-shaped support that matches the diameter of the screening cylinder and the arc shape of the bottom of the screening cylinder. A flared, upward-facing discharge funnel is located in the middle of the arc-shaped support. A vision sensor is installed inside the discharge funnel. A horizontally positioned circulating conveyor belt is located at the bottom of the discharge funnel. The surface swept out by the center line of the screening cylinder is perpendicular to the center line of the bearing seat. A pressing plate is located at one end of the bellows near the positioning mechanism. A buffer spring is located inside the bellows. The two ends of the buffer spring are connected to the side walls of the pressing plate and the side plate, respectively. A connecting spring is located at the end of the drive shaft. The other end of the connecting spring is fixedly connected to the inner wall of the sliding sleeve. The inner wall of the sliding sleeve is slidably and sealingly connected to the outer wall of the drive shaft.

[0022] A further feature is that the driving mechanism includes a fixed block fixed to the outer wall of the screening cylinder. Two parallel bearing rings are provided on the side of the fixed block away from the screening cylinder. A vertical transmission pipe is rotatably connected between the two bearing rings. A reduction motor is also provided near the center of the outer wall of the fixed block. A drive pulley is provided at the top of the output shaft of the reduction motor. A transmission belt is sleeved between the drive pulley and the outer circumferential wall of the transmission pipe. Anti-torsion inner sliding pillars with ridges on their outer walls are slidably connected to the inner circumferential walls of both ends of the transmission pipe. Rectangular holes matching the ridges are opened at both ends of the transmission pipe. A compression spring is provided at the opposite end of each of the two anti-torsion inner sliding pillars, and symmetrical ball bearing plates are provided at the opposite ends of the two compression springs.

[0023] A further feature is that a magnetic counterweight ball that can slide freely up and down is provided between the two ball bearing plates. The magnetic properties of the magnetic counterweight ball are different from those of the gravity magnetic block. The outer wall of the screening cylinder is provided with fixed frames at both the upper and lower ends of the transmission tube. Below the two fixed frames, there is a brake gear close to the tube opening. The end of the brake gear near the anti-torsion inner sliding column is provided with an anti-slip layer. The brake gear meshes with the driven gear. Symmetrical tapered roller bearings are respectively engaged in the two bearing rings.

[0024] A further feature is that a thick shaft is provided on the outer wall of the screening cylinder at the end away from the Y-shaped double-ended feeding pipe. The thick shaft is coaxially distributed with the bearing seat. A fixed rotating wheel is provided on the end of the thick shaft away from the screening cylinder. Both fixed magnets have gaps with the outer wall of the fixed rotating wheel. A support seat is provided on the upper surface of the conveying base at the end near the fixed rotating wheel. An electric push rod and a guide crossbar are respectively provided at the top of the support seat. A U-shaped abutment is provided at the end of the extension rod of the electric push rod. The U-shaped abutment is slidably connected to the outer wall of the guide crossbar. A servo motor is provided in the middle of the U-shaped abutment. A telescopic shaft tube is provided at the top of the output shaft of the servo motor. An anti-slip pressure roller is provided at the end of the extension rod of the telescopic shaft tube. The anti-slip pressure roller is coaxially distributed with the fixed rotating wheel. A thrust ball bearing is provided on the side of the anti-slip pressure roller near the U-shaped abutment. Three centrally symmetrically distributed clamping springs are provided on the surface of the thrust ball bearing. The end of the clamping spring away from the thrust ball bearing is fixed to the U-shaped abutment.

[0025] A further feature is that the positioning mechanism includes two symmetrical slide rod seats fixed to the upper surface of the conveying base. Two parallel and horizontally arranged guide slide rods are provided between the two slide rod seats. A fixed sleeve block is slidably connected between the two guide slide rods. A groove is formed on the upper surface of the fixed sleeve block. A tension spring is provided at the bottom of the groove. A sliding iron column adapted to a fixed magnet is provided at the top of the tension spring. A magnetic flux sensor is provided at the top of the sliding iron column. A return spring is provided between the side of the fixed sleeve block and one of the slide rod seats. A U-shaped push rod passing through the middle of the slide rod seat is provided on the side of the fixed sleeve block. A vertical plate is provided at the end of the U-shaped push rod away from the fixed sleeve block. A toggle rod is provided on the outer circumference of the anti-slip pressure roller, which is on the same plane as the vertical plate.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. The rotating screening cylinder allows for continuous feeding and screening of materials. Once the number of particles screened on one screen reaches saturation, simply rotate the screening cylinder 180 degrees around the center line of the bearing seat to continue feeding and screening from the other screen. The previously screened particles can then be discharged from the discharge pipe to await the next screening.

[0028] 2. By using the gravity magnetic block and the actuating strip, when feeding, the actuating strip at the end away from the material distribution baffle will automatically engage under the attraction of the gravity magnetic block and the limiting block, thus blocking the upward branch pipe. At this time, all the mixed material to be screened from the molding machine can be guided into the cavity near the bottom for screening.

[0029] 3. With the brake gear and anti-torsion inner sliding column, when the screening cylinder drives the transmission tube to rotate in a vertical state, the magnetic counterweight ball will fall on the bottom ball bearing plate. At this time, it will press the bottom end of the anti-torsion inner sliding column tightly against the surface of the brake gear on the same side, thus driving the screen below to rotate. At this time, the screen above does not rotate, which plays an energy-saving role.

[0030] 4. By using the set lever and vertical plate, the anti-slip pressure roller can be rotated before the fixed roller and the anti-slip pressure roller are put into contact. This will push the attracted sliding iron column to separate from the fixed magnet. Then, the fixed roller and the anti-slip pressure roller can be put into contact, which will drive the screening cylinder to slowly rotate.

[0031] 5. By incorporating a corrugated pipe and an inner discharge drum, this device effectively achieves non-stop screening and recycling of materials. It is simple to operate, stable, and efficient. The opening position of the Y-shaped double-headed feeding pipe matches the magnetic counterweight ball, ensuring stable material feeding and matching the rotation position of the screen to avoid energy loss. Different scrapers and components work together to achieve different effects, resulting in stronger unclogging performance and higher recycling efficiency. Furthermore, when the screen is clogged, it can apply up-and-down vibration to improve unclogging and ensure the screening and recycling effect of subsequent materials. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0034] Figure 3 This is a schematic diagram of a half-section of the screening cylinder in this invention;

[0035] Figure 4 This is the front view of the present invention;

[0036] Figure 5 This is a side view of the present invention;

[0037] Figure 6 For the present invention Figure 4 Sectional view along line AA;

[0038] Figure 7 For the present invention Figure 5 Sectional view along line BB;

[0039] Figure 8 This is a cross-sectional view of the drive mechanism in this invention;

[0040] Figure 9 This is the preparatory work for the present invention before the inverted screening cylinder;

[0041] Figure 10This is a schematic diagram of the structure of the present invention when the screening cylinder is being rotated;

[0042] Figure 11 for Figure 7 Enlarged view of point C in the middle;

[0043] Figure 12 This is a schematic cross-sectional view of the fixed magnet on the right side in the second embodiment of the present invention.

[0044] In the diagram: 1. Conveying base; 2. Bearing seat; 3. Y-shaped double-ended feeding pipe; 4. Screen; 5. Screening cylinder; 501. Gear perforation; 6. External gear ring; 7. Fixed wheel; 8. Anti-slip pressure roller; 9. Thrust ball bearing; 10. U-shaped abutment plate; 11. Guide crossbar; 12. Electric push rod; 13. Servo motor; 14. Support base; 15. Slide rod seat; 16. Actuating rod; 17. Guide slide rod; 18. Fixed magnet; 19. Fixed sleeve block; 20. U-shaped push rod; 21. Return spring; 22. Arc-shaped support; 23. Pressing spring; 24. Discharge pipe; 25. Fixed frame; 26. Shaft frame; 27. Driven gear; 28. Gear with brake; 29. ​​Transmission. 30. Pipe; 31. Bearing ring; 32. Anti-torsion inner sliding column; 33. Gear motor; 34. Fixing block; 35. Circulating conveyor belt; 36. Discharge inner barrel; 37. Conical discharge hole; 38. Fixed rotating ring; 39. Scraper; 40. Dual-shaft motor; 41. Discharge funnel; 42. Sliding iron column; 43. Ball bearing plate; 44. Magnetic counterweight ball; 45. Material distribution baffle; 46. Rotating shaft round rod; 47. Actuating bar; 48. Limiting block; 49. Drive shaft; 50. T-shaped vent hole; 51. Sliding sleeve; 52. Connecting spring; 53. Connecting pipe; 54. Intermediate pipe; 55. Side plate; 56. Corrugated pipe; 57. Extrusion plate; 58. Transmission hole; 59. Buffer spring. Detailed Implementation

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0046] First Embodiment

[0047] A method for preparing a slow-release deoxidizer for thin sheet steel includes the following steps:

[0048] Step 1: Prepare the ingredients before preparation. The alumina powder (Al2O3), AD powder, and steelmaking purification agent account for 60%, 30%, and 10% of the formula, respectively.

[0049] Step 2: Mix the ingredients again and form them. Then pour the mixed ingredients into a forming screen and screen them once. The screen aperture is 15mm. Particles smaller than 15mm are mixed again and formed. Particles larger than 15mm are calcined.

[0050] Step 3: After calcination, the agglomerated material is crushed. Large pieces are crushed first with a jaw crusher, and then smaller pieces are finely ground with a ball mill until finished particles with a diameter between 5-50mm are obtained.

[0051] Please refer to Figure 1-10 A device for preparing a slow-release deoxidizer for thin-plate steel is disclosed. This device is used to produce a method for preparing a slow-release deoxidizer for thin-plate steel. It includes a conveying base 1, with a control mechanism on one side that electrically controls various electrical components. The conveying base 1 is an L-shaped structure with an internal cavity. A vertical screening cylinder 5 is rotatably connected to the top of the conveying base 1. A bearing seat 2 is located at the middle of the top of the vertical portion of the conveying base 1, and a horizontally arranged Y-shaped double-ended feeding pipe 3 is rotatably connected to the middle of the bearing seat 2. The output end of the Y-shaped double-ended feeding pipe 3 is connected to the interior of the screening cylinder 5. The centerline of the screening cylinder 5 intersects the centerline of the bearing seat 2 at a single point. The side view shows a circle with the bearing housing 2 as the center. The inner wall of the middle part of the screening cylinder 5 is provided with a discharge inner barrel 35 with a disc-shaped structure and an internal cavity. The discharge inner barrel 35 is located between the two discharge ports of the Y-shaped double-headed feeding pipe 3. The upper and lower surfaces of the discharge inner barrel 35 are respectively provided with conical discharge holes 3501 that are centrally symmetrical. The discharge inner barrel 35 is provided with two centrally symmetrical discharge pipes 24. The ends of the two discharge pipes 24 near the conical discharge holes 3501 are both set in a funnel shape. The material is discharged into the screening cylinder 5 along the Y-shaped double-headed feeding pipe 3. When the screening cylinder 5 rotates, it can screen and discharge the material inside.

[0052] Two sets of screens 4 are symmetrically and rotatably connected inside the screening cylinder 5. The screens 4 are used to screen the material. The inner circumference of the screening cylinder 5 has annular ribs near both ends, and fixed rotating rings 36 are rotatably connected to the two annular ribs. The opposite side of the two fixed rotating rings 36 is fixed to the outer wall of the screen 4 by screws. The opposite side of the two fixed rotating rings 36 is provided with an external gear ring 6. Gear through holes 501 are opened at both ends of the screening cylinder 5 near the external gear rings 6. The outer wall of the screening cylinder 5 is provided with a shaft bracket 26 near the gear through holes 501. The middle of the two shaft brackets 26 is rotatably connected with a vertical rotating shaft. The opposite end of the two rotating shafts is provided with a driven gear 27 that meshes with the external gear ring 6 on the corresponding side. When the driven gear 27 rotates, it drives the external gear ring 6 to rotate. The rotation of the external gear ring 6 drives the fixed rotating ring 36 to rotate. The rotation of the fixed rotating ring 36 drives the screen 4 inside to rotate, effectively improving the rotational screening effect of the screen 4 on the material.

[0053] The outer wall of the screening cylinder 5 is equipped with a drive mechanism located between two driven gears 27. Through the set flip-type screening cylinder 5, the material can be continuously fed and screened. When the number of particles screened on one of the screens 4 reaches saturation, the screening cylinder 5 can be flipped 180 degrees around the center line of the bearing seat 2 to continue feeding and screening from the screen 4 at the other end. The previously screened particles can be discharged from the discharge pipe 24 to wait for the next screening.

[0054] The bottom upper surface of the conveying base 1 has an installation hole, and above the installation hole is an arc-shaped support 22 that matches the diameter of the screening cylinder 5 and the arc shape of the bottom of the screening cylinder 5. The center of the arc-shaped support 22 has an upward-expanding discharge funnel 39, and the bottom end of the discharge funnel 39 has a horizontally arranged circulating conveyor belt 34. The surface swept out by the center line of the screening cylinder 5 is perpendicular to the center line of the bearing seat 2. By setting the arc-shaped support 22 and the discharge funnel 39, the smaller particles after screening can be accurately collected, avoiding the phenomenon of smaller particles flying everywhere.

[0055] A material distribution baffle 43 is rotatably connected to the middle of the Y-shaped double-ended feeding pipe 3. A rotating shaft rod 44 is provided on one side of the material distribution baffle 43. The rotating shaft rod 44 extends horizontally outward from the outer side of the Y-shaped double-ended feeding pipe 3. A toggle bar 45 is provided at the end of the rotating shaft rod 44 away from the material distribution baffle 43, and a gravity magnet is provided at the end of the toggle bar 45 away from the rotating shaft rod 44. Limiting blocks 46 adapted to the gravity magnets are respectively provided on the outer wall of the Y-shaped double-ended feeding pipe 3 near the two branches. The gravity magnets and the toggle bar 45 can be used to control the feeding process. The actuating strip 45 at the end away from the material distribution baffle 43 automatically completes the attraction under the action of the gravity of the gravity magnetic block and the magnetic attraction of the magnetic counterweight ball 42, which can block the upward branch pipe. At this time, the mixed material to be screened from the molding machine can be completely guided into the cavity near the bottom for screening. In particular, the end of the material distribution baffle 43 is provided with a stop block. With the help of the stop block, one end of the Y-shaped double-head feeding pipe 3 can be blocked during the rotation of the material distribution baffle 43, thereby preventing the material from entering between the two discharge ports along the Y-shaped double-head feeding pipe 3.

[0056] In this invention, multiple equally spaced balls are embedded on both the upper and lower sides of the annular rib, and the fixed rotating ring 36 is rotatably connected to the annular rib; this arrangement effectively reduces frictional resistance and can rotate normally under a certain load.

[0057] The drive mechanism includes a fixing block 33 fixed to the outer wall of the screening cylinder 5. The fixing block 33 is located on the side near the Y-shaped double-ended feeding pipe 3, and two parallel bearing rings 30 are provided on the side of the fixing block 33 away from the screening cylinder 5. The two bearing rings 30 are rotatably connected by the same vertical transmission pipe 29. A reduction motor 32 is also provided near the middle of the outer wall of the fixing block 33. The top of the output shaft of the reduction motor 32 is provided with a drive pulley. The same conveyor belt is sleeved between the drive pulley and the outer circumference of the transmission pipe 29. Both ends of the inner circumference of the 9 are slidably connected to anti-torsion inner sliding pillars 31 with ridge protrusions on the outer wall, and both ends of the transmission tube 29 have rectangular holes that match the ridge protrusions. Each of the two anti-torsion inner sliding pillars 31 is provided with a pressure spring at one end, and each of the two pressure springs is provided with a symmetrical ball bearing plate 41 at one end. Therefore, when the reduction motor 32 starts, it drives the drive pulley to rotate, the drive pulley drives the transmission belt to rotate, the transmission belt drives the transmission tube 29 to rotate, and the transmission tube 29 drives the internal anti-torsion inner sliding pillars 31 to rotate.

[0058] A magnetic counterweight ball 42, capable of sliding freely up and down, is provided between the two ball bearing plates 41. The magnetism of the magnetic counterweight ball 42 is different from that of the gravity magnetic block. Therefore, when the magnetic counterweight ball 42 moves inside the ball bearing plate 41 under its own gravity, the magnetic attraction between the magnetic counterweight ball 42 and the gravity magnetic block at the end of the actuating bar 45 causes the actuating bar 45 to swing between the two limiting blocks 46. The swinging of the actuating bar 45 correspondingly causes the material distribution baffle 43 to swing inside the Y-shaped double-ended feeding pipe 3, thereby changing the flow position of the material inside the Y-shaped double-ended feeding pipe 3. The outer wall of the screening cylinder 5 is provided with fixed frames 25 at both the upper and lower ends of the transmission pipe 29, and both fixed frames 25 are provided with a corresponding... The brake gear 28 is close to the pipe opening, and the end of the brake gear 28 near the anti-torsion inner sliding column 31 is provided with an anti-slip layer; the brake gear 28 meshes with the driven gear 27; through the brake gear 28 and the anti-torsion inner sliding column 31, when the screening cylinder 5 drives the transmission pipe 29 to rotate and be in a vertical state, the magnetic counterweight ball 42 will fall on the lowest ball bearing plate 41, which will press the bottom end of the anti-torsion inner sliding column 31 tightly against the surface of the brake gear 28 on the same side, thereby driving the lower screen 4 to rotate, while the upper screen 4 does not rotate, which plays an energy-saving role. The two bearing rings 30 are respectively fitted with mutually symmetrical tapered roller bearings, which plays a role in improving the axial bearing capacity.

[0059] A thick shaft is provided on the outer wall of the screening cylinder 5 at the end away from the Y-shaped double-ended feeding pipe 3, and the thick shaft is coaxially distributed with the bearing seat 2. A fixed rotating wheel 7 is provided on the end of the thick shaft away from the screening cylinder 5, and symmetrical fixed magnets 18 are provided on the outer wall of the screening cylinder 5 near both ends. Both fixed magnets 18 have gaps with the outer wall of the fixed rotating wheel 7. Therefore, when the screening cylinder 5 rotates, it synchronously drives the fixed magnets 18 to rotate, thereby changing the relative position between the two fixed magnets 18.

[0060] The bottom upper surface of the conveying base 1 is located directly below the fixed magnet 18 and is equipped with a positioning mechanism adapted to the fixed magnet 18. The positioning mechanism is used to position the rotation of the screening cylinder 5. The upper surface of the conveying base 1 is equipped with a support seat 14 near the fixed rotating wheel 7. The top of the support seat 14 is equipped with an electric push rod 12 and a guide crossbar 11. The end of the extension rod of the electric push rod 12 is equipped with a U-shaped abutment plate 10, and the U-shaped abutment plate 10 is slidably connected to the outer wall of the guide crossbar 11. A servo motor 13 is located in the middle of the U-shaped abutment plate 10, and the top of the output shaft of the servo motor 13 is equipped with a telescopic shaft tube. The end of the extension rod of the telescopic shaft tube is equipped with an anti-slip pressure roller 8. The anti-slip pressure roller 8 is concentrically distributed with the fixed rotating wheel 7. When the servo motor 13 starts, it drives the anti-slip pressure roller 8 to rotate. When the anti-slip pressure roller 8 moves to one side of the fixed rotating wheel 7 and rubs against the fixed rotating wheel 7, the rotation of the anti-slip pressure roller 8 synchronously drives the fixed rotating wheel 7 to rotate. The rotation of the fixed rotating wheel 7 drives the screening cylinder 5 to rotate, so as to achieve continuous operation.

[0061] The anti-slip pressure roller 8 is provided with a thrust ball bearing 9 on the side near the U-shaped abutment plate 10, and the surface of the thrust ball bearing 9 is provided with three centrally symmetrically distributed clamping springs 23. The end of the clamping spring 23 away from the thrust ball bearing 9 is fixed on the U-shaped abutment plate 10. With the U-shaped abutment plate 10 and the rotating fixed roller 7, when it is necessary to control the rotation of the screening cylinder 5 during use, the anti-slip pressure roller 8 can be tightly pressed against the surface of the fixed roller 7 to avoid the generation of huge resistance when the motor is started, which may cause the motor to burn out easily.

[0062] The positioning mechanism includes two symmetrical slide rod seats 15 fixed on the upper surface of the conveying base 1. Two parallel and horizontally arranged guide slide rods 17 are provided between the two slide rod seats 15. The same fixed sleeve block 19 is slidably connected between the two guide slide rods 17. A groove is opened on the upper surface of the fixed sleeve block 19, and a tension spring is provided at the bottom of the groove. A sliding iron column 40 adapted to the fixed magnet 18 is provided at the top of the tension spring.

[0063] A return spring 21 is provided between the side of the fixed sleeve block 19 and one of the slide rod seats 15, and a U-shaped push rod 20 passing through the middle of the slide rod seat 15 is provided on the side of the fixed sleeve block 19. A vertical plate is provided at the end of the U-shaped push rod 20 away from the fixed sleeve block 19. A toggle rod 16 with the vertical plate is provided on the outer circumference of the anti-slip pressure roller 8. By using the toggle rod 16 and the vertical plate, the anti-slip pressure roller 8 can be controlled to rotate before the fixed rotating wheel 7 and the anti-slip pressure roller 8 are put together. Then, the attracted sliding iron column 40 is pushed to separate from the fixed magnet 18. After that, the fixed rotating wheel 7 and the anti-slip pressure roller 8 are put together, which can drive the screening cylinder 5 to slowly rotate.

[0064] When using this device, first rotate the screening cylinder 5 to a vertical position. Then, under the magnetic attraction of the magnetic counterweight ball 42, the gravity magnetic block moves downward to its maximum position and contacts the bottom limiting block 46. The gravity magnetic block then synchronously drives the actuating bar 45 to swing to the corresponding position, and moves the material distribution baffle 43 upward, blocking the upward branch pipe. At this time, the mixture to be screened from the forming machine can be completely guided into the cavity near the bottom for screening. When the material to be screened enters the screen 4 below, the reduction motor 32 in the drive mechanism is started. At this time, through the braked gear 28 and anti-torsion... When the screening cylinder 5 drives the transmission pipe 29 to rotate vertically, the magnetic counterweight ball 42 will fall on the lowest ball bearing plate 41. At this time, it will press the bottom end of the anti-torsion inner sliding column 31 tightly against the surface of the brake gear 28 on the same side, thereby driving the lower screen 4 to rotate. At this time, the upper screen 4 does not rotate. When the number of particles screened on one of the screens 4 reaches saturation, the screening cylinder 5 can be rotated 180 degrees around the center line of the bearing seat 2 to continue feeding and screening from the other screen 4. The previously screened particles can be discharged from the discharge pipe 24 to wait for the next screening.

[0065] By using the set lever 16 and vertical plate, before controlling the fixed rotating wheel 7 and the anti-slip pressure wheel 8 to stick together, the anti-slip pressure wheel 8 is first controlled to rotate, which then pushes the attracted sliding iron column 40 to separate from the fixed magnet 18. After that, the fixed rotating wheel 7 and the anti-slip pressure wheel 8 are controlled to stick together, which drives the screening cylinder 5 to slowly rotate.

[0066] Second Embodiment

[0067] Reference Figure 11 and Figure 12When screening the material at the top of screen 4, the rotation of screen 4 alone cannot achieve uniform and thorough screening. In particular, when some material is blocked in the screen holes inside screen 4, it will not only reduce the material feeding speed and amount, but also affect the screening of subsequent materials. Furthermore, the above-mentioned device has low cleaning efficiency and poor cleaning effect on the outer wall of the discharge inner barrel 35, which can easily cause some material to stick to the inner wall of the discharge inner barrel 35, thereby reducing the material preparation effect and efficiency. In addition, the above-mentioned devices lack precise detection of the rotation position of the screening cylinder 5. When the screening cylinder 5 does not return to a vertical state under its own weight and centrifugal force, the material after screening by screen 4 is easily spilled out, thereby reducing the material recovery effect and the accuracy and efficiency of using the screening cylinder 5.

[0068] To address the aforementioned issues, the thin-plate steel slow-release deoxidizer preparation device further includes: a magnetic flux sensor at the top of the sliding iron column 40; the sliding iron column 40 is ferromagnetic, meaning it can be magnetically attracted and fixed by the fixed magnet 18; the magnetic flux sensor detects the magnetic flux released by the fixed magnet 18, thereby determining the positional relationship between the sliding iron column 40 and the fixed magnet 18, and thus determining whether the rotation of the screening cylinder 5 has reached the correct position; and a vision sensor is installed inside the discharge hopper 39, which visually detects the screen 4 to determine the clogging status of the screen 4.

[0069] A dual-axis motor 38 is installed inside the middle of the discharge inner barrel 35. The top and bottom output ends of the dual-axis motor 38 are equipped with drive shafts 47. The other end of the drive shaft 47 passes through the discharge inner barrel 35 and is slidably connected to the outer surface of the drive shaft 49. The inner wall of the drive shaft 49 is slidably connected to the outer wall of the drive shaft 47. At the same time, the drive shaft 49 is provided with a sliding groove inside, and the outer surface of the drive shaft 47 is provided with a slider. When the sliding groove matches the slider, the dual-axis motor 38 starts and drives the top and bottom drive shafts 47 to rotate. When the drive shaft 47 rotates, it drives the drive shaft 49 to rotate. At the same time, the drive shaft 49 can also slide up and down on the outer surface of the drive shaft 47.

[0070] The outer surface of the sliding sleeve 49 is provided with a scraper 37. The rotation of the sliding sleeve 49 synchronously drives the scraper 37 to rotate. The rotation of the scraper 37 achieves scraping and cleaning of the surface of the screen 4 and the outer surface of the discharge inner barrel 35, improving the unblocking performance. The side wall of the drive shaft 47 and inside the discharge inner barrel 35 is provided with a T-shaped vent hole 48. The other end of the T-shaped vent hole 48 is connected to the inside of the sliding sleeve 49. Therefore, the gas inside the discharge inner barrel 35 can enter the inside of the sliding sleeve 49 along the T-shaped vent hole 48, thereby applying air pressure to the sliding sleeve 49 and driving the sliding sleeve 49 to move up and down on the outer surface of the drive shaft 47. The end of the drive shaft 47 is provided with a connecting spring 50. The other end of the connecting spring 50 is fixedly connected to the inner wall of the sliding sleeve 49. The setting of the connecting spring 50 improves the elastic reset performance of the sliding sleeve 49 and ensures the stability and reset of the sliding sleeve 49.

[0071] The fixed magnet 18 has an internal intermediate pipe 52, and the inner wall of the screening cylinder 5 has a connecting pipe 51. The two ends of the connecting pipe 51 are connected to the inside of the discharge inner barrel 35 and one end of the intermediate pipe 52, respectively. Therefore, the gas inside the intermediate pipe 52 can enter the discharge inner barrel 35 along the connecting pipe 51, thereby increasing the gas pressure inside the discharge inner barrel 35.

[0072] A side plate 53 is provided at the bottom of the fixed magnet 18 and at the end away from the positioning mechanism. A bellows 54 is provided at the end of the side plate 53 near the positioning mechanism. A transmission hole 56 is provided inside the side plate 53. The two ends of the transmission hole 56 are connected to the bellows 54 and the intermediate pipe 52, respectively. Therefore, when the bellows 54 is squeezed, the gas inside enters the transmission hole 56 and flows into the intermediate pipe 52 along the transmission hole 56.

[0073] A pressing plate 55 is provided at one end of the bellows 54 near the positioning mechanism. A buffer spring 57 is provided inside the bellows 54. The two ends of the buffer spring 57 are connected to the side wall of the pressing plate 55 and the side plate 53, respectively. When the pressing plate 55 and the sliding iron column 40 are pressed against each other, the pressing plate 55 presses the bellows 54, thereby allowing the gas inside the bellows 54 to circulate. When the pressing plate 55 is not pressed, under the elastic force of the buffer spring 57, the pressing plate 55 is driven to move in the opposite direction to the initial position. The bellows 54 inside can no longer enter the gas and increase in volume. The bellows 54 protects the fixed magnet 18 located above, preventing external dust and impurities from adhering to the surface of the fixed magnet 18 and causing pollution.

[0074] When using the device, after installation according to the first embodiment, the material is poured into the feed port of the Y-shaped double-ended feeding pipe 3. At this time, due to the gravity of the magnetic counterweight ball 42, it falls to the top of the ball bearing plate 41 at the bottom. Then, with the magnetic attraction of the magnetic counterweight ball 42 to the gravity magnetic block, the actuating bar 45 is driven to rotate downward and come into contact with the limiting block 46 at the bottom. When the actuating bar 45 rotates, it drives the material distribution baffle 43 to rotate through the rotating shaft rod 44. The material distribution baffle 43 blocks the upper outlet of the Y-shaped double-ended feeding pipe 3 and only opens the lower outlet. Then, the material is directly discharged to the top of the screen 4 at the bottom of the screening cylinder 5 for subsequent screening.

[0075] The ball bearing plate 41 drives the anti-torsion inner sliding column 31 at the bottom to move downward and make mutual squeezing and friction contact with the braked gear 28 at the bottom. The reduction motor 32 starts and drives the transmission tube 29 to rotate. The transmission tube 29 drives the braked gear 28 at the bottom to rotate. The braked gear 28 drives the screen 4 to rotate by meshing with the driven gear 27 and the outer gear ring 6. Then the screen 4 at the bottom inside the screening cylinder 5 rotates and rotates to screen the material, effectively improving the screening effect and screening efficiency.

[0076] As the screening cylinder 5 rotates and returns to a vertical position, the magnetic flux detected at the top of the sliding iron column 40 at the bottom continuously increases, and the position between the sliding iron column 40 and the fixed magnet 18 continuously aligns. When the magnetic flux detected by the magnetic flux sensor reaches the preset value, it indicates that the sliding iron column 40 and the fixed magnet 18 are directly opposite each other, the screening cylinder 5 is in a vertical state, and the sliding iron column 40 at the bottom compresses the bellows 54 through the extrusion plate 55 and the buffer spring 57. When the bellows 54 is compressed, the gas inside enters the connecting pipe 51 through the transmission hole 56 and the intermediate pipe 52. As gas continues to enter the inner discharge barrel 35, the air pressure inside the inner discharge barrel 35 increases, which facilitates the subsequent adjustment of the positions of the sliding sleeve 49 and the scraper 37. The fixed magnet 18 located at the top, under the elastic force of the bellows 54 and the buffer spring 57, drives the extrusion plate 55 to move to the maximum distance away from the side plate 53. The bellows 54 shields and protects the end of the fixed magnet 18, thereby effectively preventing external dust and impurities from adhering to the outer surface of the fixed magnet 18, which not only reduces the cleaning performance of the fixed magnet 18, but also affects the subsequent magnetic attraction and fixation of the fixed magnet 18 and the sliding iron column 40.

[0077] Meanwhile, as the scraper 37 and sliding sleeve 49 at the bottom stretch the connecting spring 50 downward under the action of gravity, the end of the scraper 37 and the screen 4 come into contact with each other by pressing. When the dual-shaft motor 38 starts to rotate, it drives the scraper 37 to rotate through the transmission shaft 47. When the scraper 37 rotates, it scrapes off the material on the top of the screen 4. At the same time, in conjunction with the rotation of the screen 4, it effectively improves the rotational screening efficiency of the material, making the screening stronger and the screening effect better.

[0078] The scraper 37 and the sliding sleeve 49 located at the top move towards the end of the discharge inner barrel 35 under their own weight and the elastic action of the connecting spring 50, and press against each other and come into contact with the outer wall of the discharge inner barrel 35. When the scraper 37 rotates, it scrapes off the large pieces of material at the top of the discharge inner barrel 35 and enters the conical discharge hole 3501, and finally discharges along the discharge pipe 24. In this case, the two sets of scrapers 37 have different working states, so they can achieve different functions with different components, making them more versatile and easier to operate.

[0079] As the device is used continuously, the amount of material clogged inside the screen 4 gradually increases. The corresponding material falls down into the arc-shaped support 22 after being screened by the screen 4 and is eventually discharged along the discharge hopper 39 to the top of the circulating conveyor belt 34. This decreases the amount of material at this time, which may affect the screening of subsequent materials. Therefore, the visual sensor can quickly detect the clogging of the screen 4 and then perform adaptive unclogging of the screen 4.

[0080] The control mechanism then controls the servo motor 13 to start in reverse. The servo motor 13 starts in reverse and drives the anti-slip pressure roller 8 at the output end to rotate. The rotation of the anti-slip pressure roller 8 drives the toggle lever 16 to rotate in reverse. The toggle lever 16 rotates in reverse and reduces the blocking force on the vertical plate. At this time, under the elastic force of the return spring 21, the fixed sleeve block 19 moves closer to the side plate 53. The fixed sleeve block 19 drives the internal sliding iron column 40 to move synchronously and increases the squeezing force applied to the bellows 54 by the squeezing plate 55 and the buffer spring 57. When the gas inside the bellows 54 is squeezed, it enters the connecting pipe 51 along the transmission hole 56 and the intermediate pipe 52. Inside, the gas enters the discharge inner barrel 35 through the connecting pipe 51. As the air pressure inside the discharge inner barrel 35 increases, the gas inside the discharge inner barrel 35 enters the sliding sleeve 49 through the T-shaped vent 48 at the bottom. The air pressure inside the sliding sleeve 49 increases, and the corresponding air pressure causes the sliding sleeve 49 to stretch the connecting spring 50 and move away from the discharge inner barrel 35. The sliding sleeve 49 drives the scraper 37 to increase the squeezing force applied to the top of the screen 4. At the same time, in conjunction with the rotation of the scraper 37 and the screen 4 itself, the screen 4 is effectively stretched and deformed inside the screening cylinder 5, thereby improving the clearing performance of the blockage material inside the screen 4.

[0081] Then, the control mechanism controls the servo motor 13 to rotate forward and return to its original position. The sliding iron column 40 then moves in the opposite direction and returns to its original position. Under the elastic force of the connecting spring 50, the bellows 54 expands in the opposite direction and returns to its original position. The gas inside the sliding sleeve 49 moves in the opposite direction and re-enters the discharge inner barrel 35 through the T-shaped vent hole 48. Under the elastic force of the connecting spring 50, the sliding sleeve 49 and the scraper 37 move in the opposite direction and return to their initial height. The squeezing force applied by the scraper 37 to the top of the screen 4 decreases. The above process is repeated to realize the continuous up and down vibration of the screen 4 inside the screening cylinder 5, thereby effectively improving the vibration screening effect of the screen 4, making it more effective at clearing blockages, stronger in screening, and with the coordinated cooperation of various structures, it has higher operability and stability.

[0082] After the screening of the material at the bottom is completed, the control mechanism controls the servo motor 13 to rotate forward. At the same time, the electric push rod 12 starts and drives the anti-slip pressure roller 8 to rub against the fixed rotating wheel 7. The rotation of the anti-slip pressure roller 8 drives the fixed rotating wheel 7 to rotate 180 degrees. The fixed rotating wheel 7 drives the screening cylinder 5 to rotate 180 degrees. The above process is repeated to screen and recover the subsequent material without stopping the machine. The screening efficiency is higher and the recovery effect is better.

[0083] This device effectively achieves non-stop screening and recovery of materials. It is simple to operate, stable and efficient. At the same time, the opening position of the Y-shaped double-head feeding pipe 3 matches the magnetic counterweight ball 42 to ensure stable material feeding and matches the rotation position of the screen 4 to avoid energy loss. Meanwhile, different scrapers 37 cooperate with different components to achieve different effects, with stronger unclogging performance and higher recovery efficiency. When the screen 4 is clogged, it can also apply up and down vibration to the screen 4 to improve the unclogging performance of the screen 4 and ensure the screening and recovery effect of subsequent materials.

[0084] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for preparing a slow-release deoxidizer for thin sheet steel, characterized in that, Includes the following steps: Step 1: Prepare the ingredients before preparation. The alumina powder (Al2O3), AD powder, and steelmaking purification agent account for 60%, 30%, and 10% of the formula, respectively. Step 2: Mix the ingredients again to form a shaped mixture. Then pour the mixed and shaped mixture into a forming sieve machine for screening. The screening aperture is 15mm. Particles smaller than 15mm are mixed again and formed, while particles larger than 15mm are calcined. Step 3: After calcination, the agglomerated material is crushed. Large pieces are crushed first with a jaw crusher, and then smaller pieces are finely ground with a ball mill until finished particles with a diameter between 5-50mm are obtained.

2. A device for preparing a slow-release deoxidizer for thin sheet steel, the device being used to produce the slow-release deoxidizer for thin sheet steel according to claim 1, comprising a conveying base, characterized in that, The top of the conveying base is rotatably connected to a vertical screening cylinder. The inner wall of the middle part of the screening cylinder is provided with a discharge inner barrel. Two sets of screens are symmetrically rotatably connected inside the screening cylinder. The outer wall of the screening cylinder is provided with a driving mechanism. The inner discharge barrel is equipped with a dual-axis motor in the middle. The top and bottom output ends of the dual-axis motor are equipped with drive shafts. The other end of the drive shaft passes through the inner discharge barrel and is slidably connected to a sliding sleeve on its outer surface. The outer surface of the sliding sleeve is equipped with a scraper. The side wall of the drive shaft and inside the inner discharge barrel is equipped with a T-shaped vent hole. The other end of the T-shaped vent hole is connected to the inside of the sliding sleeve. The outer wall of the screening cylinder is provided with symmetrical fixed magnets near both ends. The fixed magnets have a middle pipe inside. The inner wall of the screening cylinder has a connecting pipe. The two ends of the connecting pipe are connected to the inside of the discharge inner barrel and one end of the middle pipe, respectively. The top of the conveying base and directly below the fixed magnets is provided with a positioning mechanism. The bottom of the fixed magnets and the end away from the positioning mechanism is provided with a side plate. The side plate has a corrugated pipe near the positioning mechanism. The side plate has a transmission hole inside. The two ends of the transmission hole are connected to the corrugated pipe and the middle pipe, respectively.

3. The apparatus for preparing a slow-release deoxidizer for thin steel sheet according to claim 2, characterized in that, A control mechanism is provided on one side of the conveying base. A bearing seat is provided at the top center of the vertical part of the conveying base. A horizontally arranged Y-shaped double-ended feeding pipe is rotatably connected to the middle of the bearing seat. The output end of the Y-shaped double-ended feeding pipe is connected to the inside of the screening cylinder. A material distribution baffle is rotatably connected to the middle of the Y-shaped double-ended feeding pipe. A rotating shaft is provided on one side of the material distribution baffle. The rotating shaft extends horizontally outward from the outside of the Y-shaped double-ended feeding pipe. A toggle bar is provided at the end of the rotating shaft away from the material distribution baffle. A gravity magnet is provided at the end of the toggle bar away from the rotating shaft. Limiting blocks adapted to the gravity magnet are respectively provided on the outer wall of the Y-shaped double-ended feeding pipe near the two branches. The entire discharge inner barrel is located between the two discharge ports of the Y-shaped double-ended feeding pipe.

4. The apparatus for preparing a slow-release deoxidizer for thin steel sheet according to claim 2, characterized in that, The inner circumference of the screening cylinder has annular ribs near both ends, and fixed rotating rings are rotatably connected to each of the two annular ribs. The opposite sides of the two fixed rotating rings are fixedly connected to the outer wall of the screen by screws. The opposite sides of the two fixed rotating rings are provided with external gear rings. Gear through holes are opened at both ends of the screening cylinder near the external gear rings. A shaft bracket is provided on the outer wall of the screening cylinder near the gear through holes. A vertical rotating shaft is rotatably connected to the middle of the two shaft brackets. The opposite ends of the two rotating shafts are provided with driven gears that mesh with the external gear rings on their respective sides.

5. The apparatus for preparing a slow-release deoxidizer for thin-plate steel according to claim 2, characterized in that, The conveying base is an L-shaped structure with an internal cavity. The center line of the screening cylinder intersects the center line of the bearing seat at one point. The upper and lower surfaces of the discharge inner barrel are respectively provided with conical discharge holes that are centrally symmetrical with each other. The discharge inner barrel is provided with two centrally symmetrical discharge pipes. The ends of the two discharge pipes near the conical discharge holes are both set in a funnel shape.

6. The apparatus for preparing a slow-release deoxidizer for thin steel sheet according to claim 2, characterized in that, The bottom upper surface of the conveying base has a mounting hole. Above the mounting hole is an arc-shaped support that matches the diameter of the screening cylinder and the arc shape of the bottom of the screening cylinder. The center of the arc-shaped support has an upward-flaring discharge funnel. The discharge funnel is equipped with a vision sensor. The bottom of the discharge funnel is equipped with a horizontally arranged circulating conveyor belt. The surface swept out by the center line of the screening cylinder is perpendicular to the center line of the bearing seat. The corrugated pipe has a pressing plate near the positioning mechanism. The corrugated pipe has a buffer spring inside. The two ends of the buffer spring are connected to the side walls of the pressing plate and the side plate, respectively. The end of the drive shaft is equipped with a connecting spring. The other end of the connecting spring is fixedly connected to the inner wall of the sliding sleeve. The inner wall of the sliding sleeve is slidably and sealingly connected to the outer wall of the drive shaft.

7. The apparatus for preparing a slow-release deoxidizer for thin steel sheet according to claim 3, characterized in that, The driving mechanism includes a fixed block fixed to the outer wall of the screening cylinder. Two parallel bearing rings are provided on the side of the fixed block away from the screening cylinder. The two bearing rings are rotatably connected by the same vertical transmission pipe. A reduction motor is also provided near the middle of the outer wall of the fixed block. The output shaft of the reduction motor is provided with a drive pulley. The drive pulley and the outer circumferential wall of the transmission pipe are connected by the same transmission belt. The inner circumferential walls of both ends of the transmission pipe are slidably connected with anti-torsion inner sliding pillars with ridges on their outer walls. Rectangular holes adapted to the ridges are opened at both ends of the transmission pipe. The opposite ends of the two anti-torsion inner sliding pillars are provided with compression springs, and the opposite ends of the two compression springs are respectively provided with symmetrical ball bearing plates.

8. The apparatus for preparing a slow-release deoxidizer for thin steel sheet according to claim 7, characterized in that, A magnetic counterweight ball that can slide freely up and down is provided between the two ball bearing plates. The magnetic properties of the magnetic counterweight ball are different from those of the gravity magnetic block. The outer wall of the screening cylinder is provided with fixed frames at both the upper and lower ends of the transmission tube. Below the two fixed frames, there is a brake gear close to the tube opening. The end of the brake gear near the anti-torsion inner sliding column is provided with an anti-slip layer. The brake gear meshes with the driven gear. Symmetrical tapered roller bearings are respectively engaged in the two bearing rings.

9. The apparatus for preparing a slow-release deoxidizer for thin steel sheet according to claim 2, characterized in that, The outer wall of the screening cylinder is provided with a thick shaft at the end away from the Y-shaped double-ended feeding pipe. The thick shaft is coaxially distributed with the bearing seat. A fixed rotating wheel is provided at the end of the thick shaft away from the screening cylinder. Both fixed magnets have gaps with the outer wall of the fixed rotating wheel. A support seat is provided on the upper surface of the conveying base near the fixed rotating wheel. An electric push rod and a guide crossbar are respectively provided at the top of the support seat. A U-shaped abutment is provided at the end of the extension rod of the electric push rod. The U-shaped abutment is slidably connected to the outer wall of the guide crossbar. A servo motor is provided in the middle of the U-shaped abutment. A telescopic shaft tube is provided at the top of the output shaft of the servo motor. An anti-slip pressure roller is provided at the end of the extension rod of the telescopic shaft tube. The anti-slip pressure roller is coaxially distributed with the fixed rotating wheel. A thrust ball bearing is provided on the side of the anti-slip pressure roller near the U-shaped abutment. Three centrally symmetrical clamping springs are provided on the surface of the thrust ball bearing. The end of the clamping spring away from the thrust ball bearing is fixed to the U-shaped abutment.

10. The apparatus for preparing a slow-release deoxidizer for thin steel sheet according to claim 2, characterized in that, The positioning mechanism includes two symmetrical slide rod seats fixed to the upper surface of the conveying base. Two parallel and horizontally arranged guide slide rods are provided between the two slide rod seats. The two guide slide rods are slidably connected to the same fixed sleeve block. The upper surface of the fixed sleeve block has a groove. The bottom of the groove is provided with a tension spring. The top of the tension spring is provided with a sliding iron column adapted to the fixed magnet. The top of the sliding iron column is provided with a magnetic flux sensor. A return spring is provided between the side of the fixed sleeve block and one of the slide rod seats. The side of the fixed sleeve block is provided with a U-shaped push rod passing through the middle of the slide rod seat. The end of the U-shaped push rod away from the fixed sleeve block is provided with a vertical plate. The outer circumference of the anti-slip pressure roller is provided with a toggle rod that is on the same plane as the vertical plate.

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