Magnetic separation equipment for coal

Abstract

The invention discloses magnetic separation equipment for coal, and relates to the field of coal equipment, the magnetic separation equipment comprises an equipment main body and a first air bellow, one end of the first air bellow is provided with a first air outlet pipe and two groups of second air outlet pipes, and the other end of a first electromagnetic column is provided with a first heat dissipation pipe; and one ends of the two second air outlet pipes are connected with one ends of two second electromagnetic columns correspondingly, and second heat dissipation pipes are installed at the other ends of the two second electromagnetic columns correspondingly. By arranging the first air bellow, the first air outlet pipe, the second air outlet pipe, the first heat dissipation pipe and the second heat dissipation pipe, airflow enters the first electromagnetic column through the first air outlet pipe, and heat in the first electromagnetic column is discharged to the outer end of the equipment body through the first heat dissipation pipe; and airflow enters the two sets of second electromagnetic columns through the two sets of second air outlet pipes correspondingly, heat in the two sets of second electromagnetic columns is discharged to the outer end of the equipment body through the two sets of second heat dissipation pipes correspondingly, and the service life of the first battery column and the two sets of second electromagnetic columns is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of coal-using equipment, and specifically to a coal magnetic separation equipment. Background Art

[0002] Coal is a natural solid fuel mainly composed of carbon elements, formed by the transformation of ancient plant sediments millions of years ago under the action of high pressure and high temperature. It is one of the most important energy sources in the world and is widely used in power generation, industrial production, household heating and other fields. The quality and properties of coal vary due to factors such as the geological environment, water content, ash content, sulfur content, and volatile content during its formation.

[0003] Coal magnetic separation equipment is a kind of equipment that uses magnetic separation technology to separate impurities in coal, and is widely used in coal mine washing, coal processing and other fields. Its main principle is to utilize the difference in the reaction of different minerals to the magnetic field to separate iron-containing minerals and other magnetic substances from coal, so as to improve the quality and utilization rate of coal.

[0004] The coal magnetic separation equipment performs magnetic separation operations on coal. The electromagnet inside the magnetic separation equipment generates a magnetic field during operation, and heat is generated when current passes through the coil. However, the existing magnetic separation equipment lacks a heat dissipation mechanism inside, resulting in the electromagnet being in an overheated state for a long time. If the heat dissipation is poor or the working load is too heavy, the temperature of the electromagnet may rise, even leading to overheating. Overheating not only affects the performance of the electromagnet, but may also damage the equipment and shorten its service life. In order to avoid damage to the electromagnet, most staff will turn off the equipment, and then start the equipment again after the electromagnet cools down, which reduces the magnetic separation work efficiency. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a coal magnetic separation equipment to solve the technical problems in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A coal magnetic separation equipment, including a device main body, a movable plate, and a first air box. The movable plate is movably installed inside the device main body, and the first air box is installed at one end of the device main body; The feeding port is installed at the upper end of the device main body. The first movable cylinder is movably installed inside the device main body. The first electromagnetic column is installed inside the first movable cylinder. Two groups of movable rollers and two groups of second movable cylinders are movably installed inside the device main body. Two conveyor belts are respectively connected to the outer walls of the two groups of movable rollers and the two groups of second movable cylinders. The second electromagnetic columns are installed inside the two groups of second movable cylinders; A first air inlet pipe is installed at the air inlet end of the first bellows, and a first air outlet pipe and two groups of second air outlet pipes are installed at the air outlet end of the first bellows. One end of the first air outlet pipe is connected to one end of the first electromagnetic column, and a first heat dissipation pipe is installed at the other end of the first electromagnetic column. One end of the first heat dissipation pipe extends to the outer wall of the equipment main body. One end of each of the two groups of second air outlet pipes is respectively connected to one end of two groups of second electromagnetic columns, and second heat dissipation pipes are installed at the other ends of the two groups of second electromagnetic columns. One end of each of the two groups of second heat dissipation pipes extends to the outer wall of the equipment main body.

[0007] The present invention is further configured such that a support plate is installed inside the equipment main body. A groove is provided at the central part of the support plate. A plurality of reciprocating columns are installed at the upper end of the support plate, and springs are provided at the central ends of the plurality of reciprocating columns. The upper ends of the plurality of reciprocating columns are all connected to the bottom end of the movable plate. A first driving motor is installed on the outer wall of the equipment main body. A first driving shaft is installed at the output end of the first driving motor, and one end of the first driving shaft extends into the equipment main body. Two convex blocks are installed on the outer wall of the first driving shaft, and both of the two convex blocks are movably connected to the movable plate.

[0008] Preferably, when the first driving motor is started, it drives the first driving shaft to rotate clockwise, thereby driving the two convex blocks to rotate. The two convex blocks alternately contact the bottom end of the movable plate, and the plurality of reciprocating columns cooperate with the two convex blocks to drive the movable plate to reciprocate up and down.

[0009] The present invention is further configured such that a synchronous belt is connected between the first driving shaft and the first movable cylinder, and a synchronous belt is connected between the first movable cylinder and a set of movable rollers. A synchronous belt is connected between a set of movable rollers and a set of second movable cylinders, and a synchronous belt is connected between a set of second movable cylinders and another set of movable rollers. A synchronous belt is connected between another set of movable rollers and another set of second movable cylinders.

[0010] Preferably, when the first driving shaft rotates, the first driving shaft and the first movable cylinder are connected by a synchronous belt, and the first movable cylinder rotates. The first movable cylinder and a set of movable rollers are connected by a synchronous belt, and a set of movable rollers rotates. A set of movable rollers and a set of second movable cylinders are connected by a synchronous belt, and a set of second movable cylinders rotates, driving a set of conveyor belts to operate. A set of second movable cylinders and another set of movable rollers are connected by a synchronous belt, and another set of movable rollers rotates. Another set of movable rollers and another set of second movable cylinders are connected by a synchronous belt, and another set of second movable cylinders rotates, and another set of conveyor belts operates.

[0011] The present invention is further configured such that a second air box is installed at one end of the equipment main body, a second driving motor is installed at one end of the equipment main body, a second driving shaft is installed at the output end of the second driving motor, and both ends of the second driving shaft extend into the first air box and the second air box respectively, and fans are installed on the outer walls of both ends of the second driving shaft.

[0012] Preferably, when the second driving motor is started, it drives the second driving shaft to rotate. Fans are installed on the outer walls of both ends of the second driving shaft that extend into the first air box and the second air box respectively. The two groups of fans rotate, causing airflows to be generated inside the first air box and the second air box.

[0013] The present invention is further configured such that a first baffle is movably installed between the two groups of conveyor belts, and the cross-section of the first baffle is "L"-shaped. Activity columns that are movably connected to the inner wall of the equipment main body are provided at both ends of the first baffle, and torsion springs are installed on the outer walls of the two groups of activity columns.

[0014] Preferably, one group of conveyor belts runs continuously. One group of conveyor belts carries the magnetic substances to the upper region of the first baffle, and when the magnetic substances move out of the region of one group of second electromagnetic columns, the magnetic substances fall onto the upper end of the first baffle and then slide down from the first baffle to the inner wall on one side of the equipment main body.

[0015] The present invention is further configured such that one group of the activity columns is hollow. A third air outlet pipe is installed at one end of the first air box, and one end of the third air outlet pipe extends into the first baffle through one group of activity columns. A first air outlet plate is installed at one end of the first baffle, and one end of the third air outlet pipe is connected to the first air outlet plate. The air outlet of the first air outlet plate faces one group of conveyor belts.

[0016] Preferably, the airflow enters the third air outlet pipe. One end of the third air outlet pipe that extends into the first baffle is connected to the first air outlet plate. The first air outlet plate blows the airflow towards the coal on the upper end of the other group of conveyor belts, and the coal on the upper end of the other group of conveyor belts is evacuated again.

[0017] The present invention is further configured such that a second baffle is installed inside the equipment main body. A second air outlet plate is installed at one end of the second baffle, and the air outlet of the second air outlet plate faces one end of one group of conveyor belts. A fourth air outlet pipe is installed at one end of the first air box, and one end of the fourth air outlet pipe that extends into the second baffle is connected to the second air outlet plate.

[0018] Preferably, the airflow enters the fourth air outlet pipe. One end of the fourth air outlet pipe that extends into the second baffle is connected to the second air outlet plate. The second air outlet plate blows the airflow towards one end of the other group of conveyor belts.

[0019] The present invention is further configured such that two dust collection boxes are installed at the upper end of the equipment main body. Two second air inlet pipes are provided at one end of the second air box, and one ends of the two second air inlet pipes are respectively connected to the two dust collection boxes. Two dust suction plates are installed inside the equipment main body, and dust suction pipes are connected between the two dust collection boxes and the two dust suction plates respectively.

[0020] Preferably, air flows are generated inside the second air box. The air inlets of the second air box and the two dust collection boxes are respectively connected through the second air inlet pipes. Negative pressures are generated inside the two dust collection boxes, and the two dust collection boxes and the two dust suction plates are respectively connected through the dust suction pipes. Suctions are generated by the two dust suction plates, and the two dust suction plates absorb the coal dust floating inside the equipment main body.

[0021] The present invention is further configured such that a third air outlet plate is installed inside the equipment main body, and the air outlet end of the third air outlet plate faces between the first movable cylinder and a conveyor belt. A fifth air outlet pipe is connected between the second air box and the third air outlet plate.

[0022] Preferably, the air flow is conducted to the third air outlet plate through the fifth air outlet pipe, and the third air outlet plate blows out the air flow, and the air flow blows out from the gap between the first movable cylinder and a conveyor belt.

[0023] The present invention is further configured such that a first collection box and a second collection box are installed at the bottom end of the equipment main body, and the connection ends of the first collection box and the second collection box are connected to the bottom end of the second baffle. One inner wall of the equipment main body is inclined.

[0024] Preferably, the magnetic substances fall onto the inner wall of the inclined end of the equipment main body and slide into the second collection box, and the coal falls into the first collection box through the conveyor belt.

[0025] In summary, the present invention mainly has the following beneficial effects: 1. By providing a first air box, a first air outlet pipe, a second air outlet pipe, a first heat dissipation pipe, and a second heat dissipation pipe, the present invention solves the problem of heat dissipation of the electromagnets inside the magnetic separation equipment. The air flow enters the first air box from the first air inlet pipe, air flows are generated inside the first air box, and then the air flows are respectively discharged through the first air outlet pipe and the two second air outlet pipes. The air flow enters the first electromagnetic column through the first air outlet pipe, and the heat inside the first electromagnetic column is discharged to the outer end of the equipment main body through the first heat dissipation pipe, reducing the heat of the first electromagnetic column during long-term use and improving the service life of the first electromagnetic column. The air flow enters the two second electromagnetic columns through the two second air outlet pipes respectively, and the heat inside the two second electromagnetic columns is respectively discharged to the outer end of the equipment main body through the two second heat dissipation pipes, reducing the heat of the two second electromagnetic columns during long-term use and improving the service life of the two second electromagnetic columns.

[0026] 2. The present invention is provided with a first bellows, a third air outlet pipe, a first baffle and a first air outlet plate. The airflow enters the first bellows from the first air inlet pipe, and the airflow is generated inside the first bellows. The airflow enters the third air outlet pipe. The third air outlet pipe extends into the first baffle and is connected to the first air outlet plate at one end. The first air outlet plate blows the airflow toward the coal at the upper end of another group of conveyor belts, and evacuates the coal at the upper end of the other group of conveyor belts again, so that the magnetic material remaining in the coal is separated from the coal, thereby further improving the efficiency of coal magnetic separation operations.

[0027] 3. The present invention is provided with a first bellows, a fourth air outlet pipe, a second baffle and a second air outlet plate. The airflow enters the first bellows from the first air inlet pipe, and the airflow is generated inside the first bellows. The airflow enters the fourth air outlet pipe. The fourth air outlet pipe extends into the second baffle and is connected to the second air outlet plate at one end. The second air outlet plate directs the airflow toward one end of another group of conveyor belts, blows the magnetic material adsorbed on the outer wall of one end of the other group of conveyor belts, and blows the fine coal mixed between the magnetic materials, so that the fine coal falls into the first collecting box, thereby reducing the waste of coal resources in the magnetic screening process of coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the main body of the device in the present invention; Figure 2 This is a schematic diagram of the installation of the first collection box and the second collection box in the present invention; Figure 3 It is a side sectional view of the main body of the device in the present invention; Figure 4 It is a schematic diagram of the internal structure of the device body in the present invention; Figure 5 It is a schematic diagram of the movable plate in the present invention; Figure 6 It is a schematic diagram of the support plate in the present invention; Figure 7 It is a schematic diagram of the conveyor belt in the present invention; Figure 8 It is a schematic diagram of the first movable cylinder in the present invention; Figure 9 is a schematic diagram of a first bellows in the present invention; Figure 10 is a schematic diagram of the first baffle in the present invention; Figure 11 is a schematic diagram of the internal structure of the first baffle in the present invention; Figure 12 It is a schematic diagram of the movable column in the present invention; Figure 13 is a schematic diagram of the second baffle in the present invention; Figure 14 is a schematic diagram of the internal structure of the second baffle in the present invention; Figure 15 This is a schematic diagram of the second air bellows in the present invention.

[0029] Explanation of the reference numerals in the drawings: 1. Equipment main body; 2. Feed inlet; 3. First driving motor; 4. First driving shaft; 5. Bump; 6. Support plate; 7. Groove; 8. Reciprocating column; 9. Movable plate; 10. First movable cylinder; 11. First electromagnetic column; 12. Movable roller; 13. Second movable cylinder; 14. Second electromagnetic column; 15. Conveyor belt; 16. First heat dissipation pipe; 17. Second heat dissipation pipe; 18. First air bellows; 19. First air inlet pipe; 20. First air outlet pipe; 21. Second air outlet pipe; 22. Third air outlet pipe; 23. First baffle; 24. First air outlet plate; 25. Movable column; 26. Fourth air outlet pipe; 27. Second baffle; 28. Second air outlet plate; 29. Second air bellows; 30. Fifth air outlet pipe; 31. Third air outlet plate; 32. Second air inlet pipe; 33. Dust collection box; 34. Dust suction pipe; 35. Dust suction plate; 36. Second driving motor; 37. Second driving shaft; 38. First collection box; 39. Second collection box. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention.

[0031] Next, the embodiments of the present invention will be described according to the overall structure of the present invention.

[0032] A magnetic separation device for coal, please refer to Figure 1 - Figure 15 ,which includes an equipment main body 1, a movable plate 9 and a first air bellows 18. The movable plate 9 is movably installed inside the equipment main body 1, and the first air bellows 18 is installed at one end of the equipment main body 1; The feed inlet 2 is installed at the upper end of the equipment main body 1. Coal enters the inside of the equipment main body 1 through the feed inlet 2. The first movable cylinder 10 is movably installed inside the equipment main body 1, the first electromagnetic column 11 is installed inside the first movable cylinder 10, two groups of movable rollers 12 and two groups of second movable cylinders 13 are movably installed inside the equipment main body 1, and the outer walls of the two groups of movable rollers 12 are respectively connected to the conveyor belt 15 provided on the outer walls of the two groups of second movable cylinders 13. The second electromagnetic column 14 is installed inside each of the two groups of second movable cylinders 13; A first air inlet pipe 19 is installed at the air inlet end of the first bellows 18, and a first air outlet pipe 20 and two groups of second air outlet pipes 21 are installed at the air outlet end of the first bellows 18. One end of the first air outlet pipe 20 is connected to one end of the first electromagnetic column 11, and the other end of the first electromagnetic column 11 is installed with a first heat dissipation pipe 16. One end of the first heat dissipation pipe 16 extends to the outer wall of the equipment main body 1. Airflow enters the inside of the first electromagnetic column 11 through the first air outlet pipe 20, and the heat inside the first electromagnetic column 11 is discharged to the outer end of the equipment main body 1 through the first heat dissipation pipe 16, reducing the heat of the first electromagnetic column 11 during long-term use and prolonging the service life of the first electromagnetic column 11. One end of each of the two groups of second air outlet pipes 21 is respectively connected to one end of the two groups of second electromagnetic columns 14, and the other ends of the two groups of second electromagnetic columns 14 are both installed with second heat dissipation pipes 17. One end of each of the two groups of second heat dissipation pipes 17 extends to the outer wall of the equipment main body 1. Airflow enters the inside of the two groups of second electromagnetic columns 14 respectively through the two groups of second air outlet pipes 21, and the heat inside the two groups of second electromagnetic columns 14 is respectively discharged to the outer end of the equipment main body 1 through the two groups of second heat dissipation pipes 17, reducing the heat of the two groups of second electromagnetic columns 14 during long-term use and prolonging the service life of the two groups of second electromagnetic columns 14.

[0033] Please refer to Figure 3 - Figure 6 Inside the equipment main body 1, a support plate 6 is installed. A groove 7 is provided at the center of the support plate 6. Multiple reciprocating columns 8 are installed at the upper end of the support plate 6, and springs are provided at the central ends of the multiple reciprocating columns 8. The upper ends of the multiple reciprocating columns 8 are all connected to the bottom end of the movable plate 9. A first driving motor 3 is installed on the outer wall of the equipment main body 1. The output end of the first driving motor 3 is installed with a first driving shaft 4, and one end of the first driving shaft 4 extends into the equipment main body 1. Two convex blocks 5 are installed on the outer wall of the first driving shaft 4, and both of the two convex blocks 5 are movably connected to the movable plate 9. When the first driving motor 3 is started, it drives the first driving shaft 4 to rotate clockwise, thereby driving the two convex blocks 5 to rotate. The two convex blocks 5 alternately contact the bottom end of the movable plate 9, and the multiple reciprocating columns 8 cooperate with the two convex blocks 5 to drive the movable plate 9 to reciprocate up and down.

[0034] Please refer to Figure 3 - Figure 7, a synchronous belt is connected between the first drive shaft 4 and the first movable cylinder 10, and a synchronous belt is connected between the first movable cylinder 10 and a group of movable rollers 12. A synchronous belt is connected between a group of movable rollers 12 and a group of second movable cylinders 13, and a synchronous belt is connected between a group of second movable cylinders 13 and another group of movable rollers 12. A synchronous belt is connected between another group of movable rollers 12 and another group of second movable cylinders 13. The first drive shaft 4 rotates. The first drive shaft 4 is connected to the first movable cylinder 10 through a synchronous belt, and the first movable cylinder 10 rotates. And the first movable cylinder 10 is connected to a group of movable rollers 12 through a synchronous belt, and a group of movable rollers 12 rotate. A group of movable rollers 12 is connected to a group of second movable cylinders 13 through a synchronous belt, and a group of second movable cylinders 13 rotate, driving a group of conveyor belts 15 to operate. A group of second movable cylinders 13 is connected to another group of movable rollers 12 through a synchronous belt, and another group of movable rollers 12 rotate. And another group of movable rollers 12 is connected to another group of second movable cylinders 13 through a synchronous belt, and another group of second movable cylinders 13 rotate, and another group of conveyor belts 15 operate.

[0035] Please refer to Figure 3 - Figure 8 , a second air box 29 is installed at one end of the equipment main body 1. A second drive motor 36 is installed at one end of the equipment main body 1. The output end of the second drive motor 36 is installed with a second drive shaft 37, and both ends of the second drive shaft 37 respectively extend into the first air box 18 and the second air box 29. Fans are installed on the outer walls of both ends of the second drive shaft 37. The second drive motor 36 is started to drive the second drive shaft 37 to rotate. Fans are installed on the outer walls of both ends of the second drive shaft 37 that respectively extend into the first air box 18 and the second air box 29. The two groups of fans rotate, causing airflows to be generated inside the first air box 18 and the second air box 29.

[0036] Please refer to Figure 9 - Figure 12 , a first baffle 23 is movably installed between the two groups of conveyor belts 15, and the cross-section of the first baffle 23 is "L"-shaped. Two ends of the first baffle 23 are provided with movable columns 25 movably connected to the inner wall of the equipment main body 1, and torsion springs are installed on the outer walls of the two groups of movable columns 25. A group of conveyor belts 15 continuously operates. A group of conveyor belts 15 carry magnetic substances to the upper region of the first baffle 23, and the magnetic substances move out of the region of a group of second electromagnetic columns 14. The magnetic substances fall onto the upper end of the first baffle 23 and then slide from the first baffle 23 to the inner wall on one side of the equipment main body 1.

[0037] Please refer to Figure 9 - Figure 12, a set of movable columns 25 are hollowly arranged. One end of the first bellows 18 is installed with a third air outlet pipe 22, and one end of the third air outlet pipe 22 extends into the interior of the first baffle 23 through a set of movable columns 25. One end of the first baffle 23 is installed with a first air outlet plate 24, and one end of the third air outlet pipe 22 is connected to the first air outlet plate 24. The air outlet of the first air outlet plate 24 faces a set of conveyor belts 15. The air flow enters the third air outlet pipe 22, and one end of the third air outlet pipe 22 extending into the interior of the first baffle 23 is connected to the first air outlet plate 24. The first air outlet plate 24 blows the air flow towards the coal on the upper end of the other set of conveyor belts 15, and the coal on the upper end of the other set of conveyor belts 15 is evacuated again.

[0038] Please refer to Figure 9 - Figure 14 , a second baffle 27 is installed inside the equipment main body 1. One end of the second baffle 27 is installed with a second air outlet plate 28, and the air outlet of the second air outlet plate 28 faces one end of a set of conveyor belts 15. One end of the first bellows 18 is installed with a fourth air outlet pipe 26, and one end of the fourth air outlet pipe 26 extending into the interior of the second baffle 27 is connected to the second air outlet plate 28. The air flow enters the fourth air outlet pipe 26, and one end of the fourth air outlet pipe 26 extending into the interior of the second baffle 27 is connected to the second air outlet plate 28. The second air outlet plate 28 blows the air flow towards one end of the other set of conveyor belts 15.

[0039] Please refer to Figure 8 - Figure 15 , two dust collection boxes 33 are installed at the upper end of the equipment main body 1. One end of the second bellows 29 is provided with two second air inlet pipes 32, and one end of the two second air inlet pipes 32 is respectively connected to the two dust collection boxes 33. Two dust suction plates 35 are installed inside the equipment main body 1. A dust suction pipe 34 is connected between the two dust collection boxes 33 and the two dust suction plates 35 respectively. Air flow is generated inside the second bellows 29. The air inlet of the second bellows 29 is connected to the two dust collection boxes 33 respectively through the second air inlet pipes 32. Negative pressure is generated inside the two dust collection boxes 33, and the two dust collection boxes 33 are respectively connected to the two dust suction plates 35 through the dust suction pipes 34. Suction force is generated by the two dust suction plates 35, and the two dust suction plates 35 absorb the coal dust floating inside the equipment main body 1.

[0040] Please refer to Figure 8 - Figure 15 , a third air outlet plate 31 is installed inside the equipment main body 1, and the air outlet end of the third air outlet plate 31 faces the gap between the first movable cylinder 10 and a set of conveyor belts 15. A fifth air outlet pipe 30 is connected between the second bellows 29 and the third air outlet plate 31. The air flow is conducted to the third air outlet plate 31 through the fifth air outlet pipe 30. The third air outlet plate 31 blows out the air flow, and the air flow blows out from the gap between the first movable cylinder 10 and a set of conveyor belts 15.

[0041] Please refer to Figure 1 -Figure 3 At the bottom end of the equipment main body 1, a first collection box 38 and a second collection box 39 are installed, and the connection end of the first collection box 38 and the second collection box 39 is connected to the bottom end of the second baffle 27. One end inner wall of the equipment main body 1 is inclined. The magnetic substances fall onto the inner wall of the inclined end of the equipment main body 1 and slide into the second collection box 39. The coal falls into the first collection box 38 through the conveyor belt 15.

[0042] The working principle of the present invention is as follows: When the staff uses the equipment to perform magnetic separation operation on coal, the coal is transported to the feed port 2 after being crushed. The coal enters the interior of the equipment main body 1 through the feed port 2 and falls onto the upper end of the movable plate 9. Then, the first drive motor 3 and the second drive motor 36 are started, and the first electromagnetic column 11 and the two groups of second electromagnetic columns 14 are electrified. The first electromagnetic column 11 and the two groups of second electromagnetic columns 14 generate magnetic suction forces. The first drive motor 3 is started to drive the first drive shaft 4 to rotate clockwise, thereby driving the two groups of convex blocks 5 to rotate. The two groups of convex blocks 5 alternately contact the bottom end of the movable plate 9. The multiple reciprocating columns 8 cooperate with the two groups of convex blocks 5 to drive the movable plate 9 to reciprocate up and down, thereby dispersing the coal. The dispersed coal displaces towards one end of the movable plate 9, and the coal falls onto the outer wall of the first movable cylinder 10. When the first drive shaft 4 rotates, the first drive shaft 4 is connected to the first movable cylinder 10 through a synchronous belt, and the first movable cylinder 10 rotates. And the first movable cylinder 10 is connected to a group of movable rollers 12 through a synchronous belt, and a group of movable rollers 12 rotate. A group of movable rollers 12 is connected to a group of second movable cylinders 13 through a synchronous belt, and a group of second movable cylinders 13 rotate, driving a group of conveyor belts 15 to operate. A group of second movable cylinders 13 is connected to another group of movable rollers 12 through a synchronous belt, and another group of movable rollers 12 rotate. And another group of movable rollers 12 is connected to another group of second movable cylinders 13 through a synchronous belt, and another group of second movable cylinders 13 rotate, and another group of conveyor belts 15 operate. When the coal falls onto the outer wall of the first movable cylinder 10 and the first movable cylinder 10 is in a rotating state, the first electromagnetic column 11 adsorbs the magnetic substances in the coal on the outer wall of the first movable cylinder 10. The first movable cylinder 10 rotates, carrying the magnetic substances adsorbed on the outer wall of the first movable cylinder 10 to the area of the first movable cylinder 10 that is not covered by the first electromagnetic column 11. The magnetic substances fall onto the inner wall of one side of the equipment main body 1, and the inner wall of one side of the equipment main body 1 is inclined. The magnetic substances slide into the second collection box 39. The first movable cylinder 10 rotates clockwise to break up the coal again and convey the coal to the upper end of a set of conveyor belts 15. Then, the set of conveyor belts 15 transports the coal. The set of conveyor belts 15 conveys the coal to the area of a set of second electromagnetic columns 14. The set of second electromagnetic columns 14 generates magnetic suction force on the residual magnetic substances in the coal, improving the magnetic separation effect of the coal. The magnetic substances are adsorbed on the outer wall of the set of conveyor belts 15. Then, the set of conveyor belts 15 continues to operate. The set of conveyor belts 15 carries the magnetic substances to the upper end area of the first baffle 23, and the magnetic substances move out of the area of the set of second electromagnetic columns 14. The magnetic substances fall onto the upper end of the first baffle 23 and then slide from the first baffle 23 to the inner wall of one side of the equipment main body 1. The magnetic substances slide into the second collection box 39; Then, the coal on the upper end of the set of conveyor belts 15 falls onto the upper end of another set of conveyor belts 15. The another set of conveyor belts 15 transports the coal. The another set of conveyor belts 15 conveys the coal to the area of another set of second electromagnetic columns 14. The another set of second electromagnetic columns 14 generates magnetic suction force on the residual magnetic substances in the coal, further improving the magnetic separation effect of the coal. The magnetic substances are adsorbed on the outer wall of the another set of conveyor belts 15. Then, the another set of conveyor belts 15 continues to operate. The another set of conveyor belts 15 carries the magnetic substances to the upper end of the second collection box 39, and the magnetic substances move out of the area of the another set of second electromagnetic columns 14. The magnetic substances fall into the second collection box 39; The another set of conveyor belts 15 conveys the coal, causing the coal to fall into the first collection box 38; When the second drive motor 36 is started, it drives the second drive shaft 37 to rotate. Fans are installed on the outer walls of both ends of the second drive shaft 37 that respectively extend into the first air box 18 and the second air box 29. The two groups of fans rotate, generating airflows inside the first air box 18 and the second air box 29; When an airflow is generated inside the first air box 18, the airflow enters the first air box 18 through the first air inlet pipe 19, and then the airflow is discharged through the first air outlet pipe 20, two groups of second air outlet pipes 21, the third air outlet pipe 22, and the fourth air outlet pipe 26 respectively. The airflow enters the first electromagnetic column 11 through the first air outlet pipe 20, and discharges the heat inside the first electromagnetic column 11 to the outer end of the equipment main body 1 through the first heat dissipation pipe 16, reducing the heat generated by the first electromagnetic column 11 during long-term use and improving the service life of the first electromagnetic column 11. The airflow enters the two groups of second electromagnetic columns 14 through the two groups of second air outlet pipes 21 respectively, and discharges the heat inside the two groups of second electromagnetic columns 14 to the outer end of the equipment main body 1 through the two groups of second heat dissipation pipes 17 respectively, reducing the heat generated by the two groups of second electromagnetic columns 14 during long-term use and improving the service life of the two groups of second electromagnetic columns 14; After the airflow enters the third air outlet pipe 22, one end of the third air outlet pipe 22 extends into the interior of the first baffle 23 and is connected to the first air outlet plate 24. The first air outlet plate 24 blows the airflow toward the coal at the upper end of another group of conveyor belts 15, and evacuates the coal at the upper end of another group of conveyor belts 15 again, so that the magnetic material remaining in the coal is separated from the coal, further improving the efficiency of the coal magnetic separation operation; After the airflow enters the fourth air outlet pipe 26, the fourth air outlet pipe 26 extends into one end of the second baffle plate 27 and is connected to the second air outlet plate 28. The second air outlet plate 28 directs the airflow toward one end of another group of conveyor belts 15, blows the magnetic material adsorbed on the outer wall of one end of another group of conveyor belts 15, blows the fine coal mixed between the magnetic materials, and makes the fine coal fall into the first collection box 38, thereby reducing the waste of coal resources in the magnetic screening process of coal. When airflow is generated inside the second wind box 29, the air inlet of the second wind box 29 is connected to the two groups of dust collecting boxes 33 through the second air inlet pipe 32, negative pressure is generated inside the two groups of dust collecting boxes 33, and the two groups of dust collecting boxes 33 are respectively connected to the two groups of dust collecting plates 35 through the dust collecting pipe 34. The two groups of dust collecting plates 35 generate suction, and the two groups of dust collecting plates 35 absorb the coal dust floating inside the equipment body 1 to prevent the floating coal dust from adhering to the inner wall of the equipment body 1 and accumulating to form coal blocks, further avoiding the waste of coal resources. The airflow is transmitted to the third air outlet plate 31 through the fifth air outlet pipe 30, and the third air outlet plate 31 blows out the airflow, and the airflow is blown out from the gap between the first movable cylinder 10 and a group of conveyor belts 15, avoiding the coal from falling to the upper end of a group of conveyor belts 15 and bouncing from the gap to the inner wall of the inclined end of the equipment body 1, further reducing the waste of coal resources in the magnetic screening process of coal.

[0043] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A magnetic separation device for coal, comprising a device main body (1), a movable plate (9), and a first air box (18), characterized in that: Inside the device main body (1), a movable plate (9) is installed movably, and a first air box (18) is installed at one end of the device main body (1); At the upper end of the device main body (1), a feed inlet (2) is installed. Inside the device main body (1), a first movable cylinder (10) is installed movably. Inside the first movable cylinder (10), a first electromagnetic column (11) is installed. Inside the device main body (1), two groups of movable rollers (12) and two groups of second movable cylinders (13) are installed movably. Outer walls of the two groups of movable rollers (12) and the two groups of second movable cylinders (13) are respectively connected with conveyor belts (15). Inside the two groups of second movable cylinders (13), second electromagnetic columns (14) are installed; At the air inlet end of the first air box (18), a first air inlet pipe (19) is installed. At the air outlet end of the first air box (18), a first air outlet pipe (20) and two groups of second air outlet pipes (21) are installed. One end of the first air outlet pipe (20) is connected with one end of the first electromagnetic column (11). The other end of the first electromagnetic column (11) is installed with a first heat dissipation pipe (16), and one end of the first heat dissipation pipe (16) extends to the outer wall of the device main body (1). One ends of the two groups of second air outlet pipes (21) are respectively connected with one ends of the two groups of second electromagnetic columns (14). The other ends of the two groups of second electromagnetic columns (14) are both installed with second heat dissipation pipes (17), and one ends of the two groups of second heat dissipation pipes (17) both extend to the outer wall of the device main body (1).

2. A magnetic separation device for coal according to claim 1, characterized in that: Inside the device main body (1), a support plate (6) is installed. A groove (7) is opened at the central part of the support plate (6). At the upper end of the support plate (6), multiple reciprocating columns (8) are installed. Springs are arranged at the central ends of the multiple reciprocating columns (8). Upper ends of the multiple reciprocating columns (8) are all connected with the bottom end of the movable plate (9). A first driving motor (3) is installed on the outer wall of the device main body (1). The output end of the first driving motor (3) is installed with a first driving shaft (4), and one end of the first driving shaft (4) extends into the device main body (1). Two convex blocks (5) are installed on the outer wall of the first driving shaft (4), and the two convex blocks (5) are both movably connected with the movable plate (9).

3. The magnetic separation equipment for coal according to claim 2, wherein: A synchronous belt is connected between the first driving shaft (4) and the first movable cylinder (10), and a synchronous belt is connected between the first movable cylinder (10) and one group of movable rollers (12). A synchronous belt is connected between one group of movable rollers (12) and one group of second movable cylinders (13), and a synchronous belt is connected between one group of second movable cylinders (13) and the other group of movable rollers (12). A synchronous belt is connected between the other group of movable rollers (12) and the other group of second movable cylinders (13).

4. A coal magnetic separation device according to claim 1, characterized in that: At one end of the device main body (1), a second air box (29) is installed. At one end of the device main body (1), a second driving motor (36) is installed. The output end of the second driving motor (36) is installed with a second driving shaft (37), and two ends of the second driving shaft (37) respectively extend into the first air box (18) and the second air box (29). Fans are installed on the outer walls of two ends of the second driving shaft (37).

5. A coal magnetic separation device according to claim 4, characterized in that: A first baffle (23) is movably installed between two sets of the conveyor belts (15), and the cross-section of the first baffle (23) is "L"-shaped. Both ends of the first baffle (23) are provided with movable columns (25) movably connected to the inner wall of the equipment main body (1), and torsion springs are installed on the outer walls of both sets of movable columns (25).

6. The magnetic separation equipment for coal according to claim 5, characterized in that: One set of the movable columns (25) is hollow. One end of the first air box (18) is installed with a third air outlet pipe (22), and one end of the third air outlet pipe (22) extends into the first baffle (23) through one set of movable columns (25). One end of the first baffle (23) is installed with a first air outlet plate (24), and one end of the third air outlet pipe (22) is connected to the first air outlet plate (24). The air outlet of the first air outlet plate (24) faces one set of conveyor belts (15).

7. A coal magnetic separation device according to claim 1, characterized in that: A second baffle (27) is installed inside the equipment main body (1). One end of the second baffle (27) is installed with a second air outlet plate (28), and the air outlet of the second air outlet plate (28) faces one end of one set of conveyor belts (15). One end of the first air box (18) is installed with a fourth air outlet pipe (26), and one end of the fourth air outlet pipe (26) extending into the second baffle (27) is connected to the second air outlet plate (28).

8. A coal magnetic separation device according to claim 4, characterized in that: Two sets of dust collection boxes (33) are installed at the upper end of the equipment main body (1). One end of the second air box (29) is provided with two sets of second air inlet pipes (32), and one end of each of the two sets of second air inlet pipes (32) is respectively connected to the two sets of dust collection boxes (33). Two sets of dust suction plates (35) are installed inside the equipment main body (1). Dust suction pipes (34) are connected between the two sets of dust collection boxes (33) and the two sets of dust suction plates (35) respectively.

9. A coal magnetic separation device according to claim 8, characterized in that: A third air outlet plate (31) is installed inside the equipment main body (1), and the air outlet end of the third air outlet plate (31) faces between the first movable cylinder (10) and one set of conveyor belts (15). A fifth air outlet pipe (30) is connected between the second air box (29) and the third air outlet plate (31).

10. A coal magnetic separation device according to claim 1, characterized in that: A first collection box (38) and a second collection box (39) are installed at the bottom end of the equipment main body (1), and the connection end of the first collection box (38) and the second collection box (39) is connected to the bottom end of the second baffle (27). One end of the inner wall of the equipment main body (1) is inclined.

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