A magnetic separation device for coal

Abstract

The present invention discloses a coal magnetic separation device, which relates to the field of coal equipment, including a device body and a first bellows, wherein a first air outlet pipe and two groups of second air outlet pipes are installed at one end of the first bellows, a first heat dissipation pipe is installed at the other end of the first electromagnetic column, one end of the two groups of second air outlet pipes are respectively connected to one end of the two groups of second electromagnetic columns, and the other end of the two groups of second electromagnetic columns are both installed with a second heat dissipation pipe. The present invention provides a first bellows, a first air outlet pipe, a second air outlet pipe, a first heat dissipation pipe, and a second heat dissipation pipe. Airflow enters the interior of 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 device body through the first heat dissipation pipe. Airflow enters the interior of the two groups of second electromagnetic columns through the two groups of second air outlet pipes, and the heat inside the two groups of second electromagnetic columns is discharged to the outer end of the device body through the two groups of second heat dissipation pipes, thereby improving the service life of the first battery column and the two groups of second electromagnetic columns.

Description

Technical Field

[0001] The present invention relates to the field of coal equipment, in particular to coal magnetic separation equipment. Background Art

[0002] Coal is a natural solid fuel composed mainly of carbon. It was formed millions of years ago when ancient plant deposits were transformed under 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, and home heating. The quality and properties of coal vary depending on factors such as the geological environment in which it was formed, water content, ash content, sulfur content, and volatile matter.

[0003] Coal magnetic separation equipment is a device that uses magnetic separation technology to separate impurities in coal. It is widely used in coal washing, coal processing and other fields. Its main principle is to use the difference in the response of different minerals to the magnetic field to separate iron-containing minerals and other magnetic substances from coal, thereby improving the quality and utilization rate of coal.

[0004] Coal magnetic separation equipment is used to perform magnetic separation operations on coal. The electromagnet inside the magnetic separation equipment will generate a magnetic field when working, and heat will be generated when current passes through the coil. However, the existing magnetic separation equipment lacks a heat dissipation mechanism, which causes the electromagnet to be in an overheated state for a long time. If the heat dissipation is poor or the workload is too heavy, the temperature of the electromagnet may rise and even cause overheating. Overheating will not only affect the performance of the electromagnet, but may also damage the equipment and shorten its service life. In order to avoid damage to the electromagnet, the staff will mostly shut down the equipment and start the equipment again after the electromagnet cools down, which reduces the efficiency of magnetic separation. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a magnetic separation device for coal to solve the technical problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: A coal magnetic separation device, comprising a device body, a movable plate, and a first wind box, wherein the movable plate is movably installed inside the device body, and the first wind box is installed at one end of the device body;

[0007] A feed port is installed at the upper end of the equipment body, a first movable cylinder is movably installed inside the equipment body, a 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 equipment body, the two groups of movable rollers are respectively connected to the outer walls of the two groups of second movable cylinders, and second electromagnetic columns are installed inside the two groups of second movable cylinders;

[0008] The first air inlet end of the first bellows is equipped with a first air inlet pipe, the air outlet end of the first bellows is equipped with a first air outlet pipe and two groups of second air outlet pipes, and one end of the first air outlet pipe is connected to one end of the first electromagnetic column, the other end of the first electromagnetic column is equipped with a first heat dissipation pipe, and one end of the first heat dissipation pipe extends to the outer wall of the device body, one end of the two groups of second air outlet pipes are respectively connected to one end of the two groups of second electromagnetic columns, the other end of the two groups of second electromagnetic columns are equipped with a second heat dissipation pipe, and one end of the two groups of second heat dissipation pipes extends to the outer wall of the device body.

[0009] The present invention is further configured as follows: a support plate is installed inside the device body, a groove is opened in the center of the support plate, multiple groups of reciprocating columns are installed on the upper end of the support plate, and the center ends of the multiple groups of reciprocating columns are provided with springs, the upper ends of the multiple groups of reciprocating columns are connected to the bottom end of the movable plate, a first drive motor is installed on the outer wall of the device body, a first drive shaft is installed on the output end of the first drive motor, and one end of the first drive shaft extends to the inside of the device body, two groups of protrusions are installed on the outer wall of the first drive shaft, and the two groups of protrusions are movably connected to the movable plate.

[0010] Preferably, the first drive motor is started, driving the first drive shaft to rotate clockwise, thereby driving the two groups of protrusions to rotate, the two groups of protrusions alternately contact the bottom end of the movable plate, and multiple groups of reciprocating columns cooperate with the two groups of protrusions to drive the movable plate to move up and down.

[0011] The present invention is further configured such that a synchronous belt is provided between the first drive shaft and the first movable cylinder, and a synchronous belt is provided between the first movable cylinder and a group of movable rollers, a synchronous belt is provided between one group of movable rollers and a group of second movable cylinders, and a synchronous belt is provided between one group of second movable cylinders and another group of movable rollers, and a synchronous belt is provided between another group of movable rollers and another group of second movable cylinders.

[0012] Preferably, the first drive shaft rotates, the first drive shaft and the first movable cylinder are connected by a synchronous belt, the first movable cylinder rotates, and the first movable cylinder is connected to a group of movable rollers by a synchronous belt, a group of movable rollers rotates, a group of movable rollers are connected to a group of second movable cylinders by a synchronous belt, a group of second movable cylinders rotates, driving a group of conveyor belts to operate, a group of second movable cylinders are connected to another group of movable rollers by a synchronous belt, the other group of movable rollers rotates, and the other group of movable rollers is connected to another group of second movable cylinders by a synchronous belt, the other group of second movable cylinders rotates, and the other group of conveyor belts operates.

[0013] The present invention is further configured such that a second bellows is installed at one end of the device body, a second drive motor is installed at one end of the device body, a second drive shaft is installed at the output end of the second drive motor, and both ends of the second drive shaft extend into the first bellows and the second bellows respectively, and fans are installed on the outer walls of both ends of the second drive shaft.

[0014] Preferably, the second drive motor is started to drive the second drive shaft to rotate. The second drive shaft extends into the first bellows and the outer walls of both ends of the second bellows are respectively installed with fans. The two sets of fans rotate to generate airflow inside the first bellows and the second bellows.

[0015] 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, and movable columns movably connected to the inner wall of the equipment body are provided at both ends of the first baffle, and torsion springs are installed on the outer walls of the two groups of movable columns.

[0016] Preferably, a group of conveyor belts continuously operates, a group of conveyor belts carries the magnetic material to the upper end area of ​​the first baffle, and the magnetic material moves out of a group of second electromagnetic column areas, the magnetic material falls to the upper end of the first baffle, and then slides from the first baffle to the inner wall of one side of the equipment body.

[0017] The present invention is further configured such that a group of the movable columns are hollowly arranged, a third air outlet pipe is installed at one end of the first bellows, and one end of the third air outlet pipe extends into the interior of the first baffle through a group of movable 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, and the air outlet of the first air outlet plate faces a group of conveyor belts.

[0018] Preferably, the airflow enters the third air outlet pipe, which extends into the interior of 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, thereby evacuating the coal at the upper end of the other group of conveyor belts again.

[0019] The present invention is further configured such that a second baffle is installed inside the main body of the equipment, a second air outlet plate is installed at one end of the second baffle, and the air outlet of the second air outlet plate is directed toward one end of a group of conveyor belts, a fourth air outlet pipe is installed at one end of the first bellows, and the fourth air outlet pipe extends into one end of the interior of the second baffle and is connected to the second air outlet plate.

[0020] Preferably, the airflow enters the fourth air outlet pipe, and one end of the fourth air outlet pipe extends into the interior of the second baffle and is connected to the second air outlet plate, and the second air outlet plate directs the airflow toward one end of another group of conveyor belts.

[0021] The present invention is further configured such that two groups of dust collecting boxes are installed at the upper end of the device body, two groups of second air inlet pipes are provided at one end of the second air box, and one end of the two groups of second air inlet pipes are respectively connected to the two groups of dust collecting boxes, and two groups of dust collection plates are installed inside the device body, and dust collection pipes are provided between the two groups of dust collecting boxes and the two groups of dust collection plates.

[0022] Preferably, air flow is generated inside the second bellows, and the air inlet of the second bellows is connected to the two groups of dust collecting boxes through the second air inlet pipe respectively. Negative pressure is generated inside the two groups of dust collecting boxes, and the two groups of dust collecting boxes are connected to the two groups of dust collecting plates through the dust collecting pipe respectively. The two groups of dust collecting plates generate suction, and the two groups of dust collecting plates absorb the coal dust floating inside the equipment body.

[0023] The present invention is further configured such that a third air outlet plate is installed inside the equipment body, and the air outlet end of the third air outlet plate is directed toward between the first movable cylinder and a group of conveyor belts, and a fifth air outlet pipe is provided between the second air box and the third air outlet plate to connect them.

[0024] Preferably, the airflow is conducted to the third air outlet plate through the fifth air outlet pipe, and the third air outlet plate blows the airflow out from the gap between the first movable cylinder and a group of conveyor belts.

[0025] 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 body, and the connecting ends of the first collection box and the second collection box are connected to the bottom end of the second baffle, and the inner wall of one end of the equipment body is inclined.

[0026] Preferably, the magnetic material falls onto the inner wall of the inclined end of the equipment body and slides into the second collecting box, and the coal falls into the first collecting box through the conveyor belt.

[0027] In summary, the present invention mainly has the following beneficial effects:

[0028] 1. The present invention solves the problem of heat dissipation of the electromagnet inside the magnetic separation equipment by providing a first bellows, a first air outlet pipe, a second air outlet pipe, a first heat dissipation pipe and a second heat dissipation pipe. The air flow enters the first bellows from the first air inlet pipe, and the air flow is generated inside the first bellows. The air flow is then discharged through the first air outlet pipe and the two groups of second air outlet pipes respectively. 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, thereby reducing the heat generated by the first electromagnetic column when used for a long time and improving the service life of the first electromagnetic column. The air flow enters the two groups of second electromagnetic columns through the two groups of second air outlet pipes respectively, and the heat inside the two groups of second electromagnetic columns is discharged to the outer end of the equipment main body through the two groups of second heat dissipation pipes respectively, thereby reducing the heat generated by the two groups of second electromagnetic columns when used for a long time and improving the service life of the two groups of second electromagnetic columns.

[0029] 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 air flow enters the first bellows from the first air inlet pipe, and the air flow is generated inside the first bellows. The air flow enters the third air outlet pipe, and 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 air flow 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, further improving the efficiency of the coal magnetic separation operation.

[0030] 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 air flow enters the first bellows from the first air inlet pipe, and the air flow is generated inside the first bellows. The air flow enters the fourth air outlet pipe, and 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 air flow 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 during the magnetic screening process of coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the main body of the device in the present invention;

[0032] Figure 2 This is a schematic diagram of the installation of the first collection box and the second collection box in the present invention;

[0033] Figure 3 It is a side sectional view of the main body of the device in the present invention;

[0034] Figure 4 Schematic diagram of the internal structure of the device body in the present invention;

[0035] Figure 5 Schematic diagram of the movable plate in the present invention;

[0036] Figure 6 Schematic diagram of the support plate in the present invention;

[0037] Figure 7 Schematic diagram of the conveyor belt in the present invention;

[0038] Figure 8 Schematic diagram of the first movable cylinder in the present invention;

[0039] Figure 9 Schematic diagram of the first bellows in the present invention;

[0040] Figure 10 Schematic diagram of the first baffle in the present invention;

[0041] Figure 11 Schematic diagram of the internal structure of the first baffle in the present invention;

[0042] Figure 12 Schematic diagram of the movable column in the present invention;

[0043] Figure 13 Schematic diagram of the second baffle in the present invention;

[0044] Figure 14 Schematic diagram of the internal structure of the second baffle in the present invention;

[0045] Figure 15 Schematic diagram of the second bellows in the present invention.

[0046] Description of reference numerals:

[0047] 1. Equipment body; 2. Feeding port; 3. First drive motor; 4. First drive 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 pipe; 17. Second heat pipe; 18. First bellows; 19. First air inlet pipe; 20. First air outlet pipe; 21. Second air outlet duct; 22. Third air outlet duct; 23. First baffle; 24. First air outlet plate; 25. Movable column; 26. Fourth air outlet duct; 27. Second baffle; 28. Second air outlet plate; 29. ​​Second bellows; 30. Fifth air outlet duct; 31. Third air outlet plate; 32. Second air inlet duct; 33. Dust collection box; 34. Dust collection duct; 35. Dust collection plate; 36. Second drive motor; 37. Second drive shaft; 38. First collection box; 39. Second collection box. DETAILED DESCRIPTION

[0048] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 understood as limiting the present invention.

[0049] The following describes an embodiment of the present invention based on its overall structure.

[0050] A magnetic separation device for coal, see Figure 1 - Figure 15 , including a device body 1, a movable plate 9 and a first bellows 18, the movable plate 9 is movably installed inside the device body 1, and the first bellows 18 is installed at one end of the device body 1;

[0051] A feed port 2 is installed at the upper end of the equipment body 1, through which coal enters the interior of the equipment body 1. A first movable cylinder 10 is movably installed inside the equipment body 1, and a first electromagnetic column 11 is installed inside the first movable cylinder 10. Two sets of movable rollers 12 and two sets of second movable cylinders 13 are movably installed inside the equipment body 1. The two sets of movable rollers 12 are respectively connected to the outer walls of the two sets of second movable cylinders 13, each of which is provided with a conveyor belt 15. Second electromagnetic columns 14 are installed inside the two sets of second movable cylinders 13.

[0052] The first air inlet pipe 19 is installed at the air inlet end of the first air box 18, and the first air outlet pipe 20 and two sets of second air outlet pipes 21 are installed at the air outlet end of the first air box 18, and 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, and one end of the first heat dissipation pipe 16 extends to the outer wall of the device body 1. The air flow enters 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 device body 1 through the first heat dissipation pipe 16, thereby reducing the heat of the first electromagnetic column 11 when used for a long time and improving the performance. The service life of the first electromagnetic column 11, one end 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 end of the two groups of second electromagnetic columns 14 is installed with a second heat dissipation pipe 17, and one end of the two groups of second heat dissipation pipes 17 extends to the outer wall of the device body 1. The airflow enters the interior of the two groups of second electromagnetic columns 14 through the two groups of second air outlet pipes 21, and the heat inside the two groups of second electromagnetic columns 14 is discharged to the outer end of the device body 1 through the two groups of second heat dissipation pipes 17, thereby reducing the heat of the two groups of second electromagnetic columns 14 when used for a long time and improving the service life of the two groups of second electromagnetic columns 14.

[0053] See also Figure 3 - Figure 6 A support plate 6 is installed inside the equipment body 1, and a groove 7 is opened in the center of the support plate 6. Multiple groups of reciprocating columns 8 are installed on the upper end of the support plate 6, and the center ends of the multiple groups of reciprocating columns 8 are provided with springs. The upper ends of the multiple groups of reciprocating columns 8 are connected to the bottom end of the movable plate 9. A first drive motor 3 is installed on the outer wall of the equipment body 1, and a first drive shaft 4 is installed on the output end of the first drive motor 3, and one end of the first drive shaft 4 extends to the inside of the equipment body 1. Two groups of protrusions 5 are installed on the outer wall of the first drive shaft 4, and the two groups of protrusions 5 are movably connected to the movable plate 9. When the first drive motor 3 is started, it drives the first drive shaft 4 to rotate clockwise, thereby driving the two groups of protrusions 5 to rotate. The two groups of protrusions 5 alternately contact the bottom end of the movable plate 9, and multiple groups of reciprocating columns 8 cooperate with the two groups of protrusions 5 to drive the movable plate 9 to move back and forth up and down.

[0054] See also Figure 3 - Figure 7, a synchronous belt is provided between the first drive shaft 4 and the first movable cylinder 10, and a synchronous belt is provided between the first movable cylinder 10 and a group of movable rollers 12, a synchronous belt is provided between a group of movable rollers 12 and a group of second movable cylinders 13, and a synchronous belt is provided between a group of second movable cylinders 13 and another group of movable rollers 12, and a synchronous belt is provided 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, the first movable cylinder 10 rotates, and the first The movable drum 10 is connected to a group of movable rollers 12 through a synchronous belt, and the group of movable rollers 12 rotates. The group of movable rollers 12 is connected to a group of second movable drums 13 through a synchronous belt, and the group of second movable drums 13 rotates, driving a group of conveyor belts 15 to operate. The group of second movable drums 13 is connected to another group of movable rollers 12 through a synchronous belt, and the other group of movable rollers 12 rotates. The other group of movable rollers 12 is connected to another group of second movable drums 13 through a synchronous belt, and the other group of second movable drums 13 rotates, and the other group of conveyor belts 15 operates.

[0055] See also Figure 3 - Figure 8 A second bellows 29 is installed at one end of the device body 1, and a second drive motor 36 is installed at one end of the device body 1. A second drive shaft 37 is installed at the output end of the second drive motor 36, and both ends of the second drive shaft 37 extend into the first bellows 18 and the second bellows 29 respectively. Fans are installed on the outer walls of both ends of the second drive shaft 37. When the second drive motor 36 is started, it drives the second drive shaft 37 to rotate. The second drive shaft 37 extends into the first bellows 18 and the second bellows 29 respectively, and fans are installed on the outer walls of both ends. The two sets of fans rotate, so that airflow is generated inside the first bellows 18 and the second bellows 29.

[0056] See also 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. Both ends of the first baffle 23 are provided with movable columns 25 movably connected to the inner wall of the equipment body 1, and the outer walls of the two groups of movable columns 25 are installed with torsion springs. One group of conveyor belts 15 continuously runs, and one group of conveyor belts 15 carries the magnetic material to the upper end area of ​​the first baffle 23, and the magnetic material moves out of the area of ​​a group of second electromagnetic columns 14. The magnetic material falls to the upper end of the first baffle 23, and then slides from the first baffle 23 to the inner wall of one side of the equipment body 1.

[0057] See also Figure 9 - Figure 12A group of movable columns 25 are hollowly arranged, and a third air outlet pipe 22 is installed at one end of the first bellows 18, and one end of the third air outlet pipe 22 extends into the interior of the first baffle 23 through a group of movable columns 25. A first air outlet plate 24 is installed at one end of the first baffle 23, 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 is directed toward a group of conveyor belts 15, and the air flow enters the third air outlet pipe 22. The third air outlet pipe 22 extends into the interior of the first baffle 23 at one end and is connected to the first air outlet plate 24. The first air outlet plate 24 blows the air flow toward the coal at the upper end of another group of conveyor belts 15, and evacuates the coal at the upper end of the other group of conveyor belts 15 again.

[0058] See also Figure 9 - Figure 14 A second baffle 27 is installed inside the equipment body 1, and a second air outlet plate 28 is installed at one end of the second baffle 27, and the air outlet of the second air outlet plate 28 is directed toward one end of a group of conveyor belts 15. A fourth air outlet pipe 26 is installed at one end of the first bellows 18, and the fourth air outlet pipe 26 extends into the interior of the second baffle 27 and is connected to the second air outlet plate 28. The airflow enters the fourth air outlet pipe 26, and the fourth air outlet pipe 26 extends into the interior of the second baffle 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.

[0059] See also Figure 8 - Figure 15 Two groups of dust collecting boxes 33 are installed at the upper end of the equipment main body 1, and two groups of second air inlet pipes 32 are provided at one end of the second air box 29, and one end of the two groups of second air inlet pipes 32 are respectively connected to the two groups of dust collecting boxes 33. Two groups of dust collection plates 35 are installed inside the equipment main body 1, and dust collection pipes 34 are provided between the two groups of dust collecting boxes 33 and the two groups of dust collection plates 35. Airflow is generated inside the second air box 29, and the air inlet of the second air box 29 is connected to the two groups of dust collecting boxes 33 through the second air inlet pipes 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 collection plates 35 through dust collection pipes 34. The two groups of dust collection plates 35 generate suction, and the two groups of dust collection plates 35 absorb the coal dust floating inside the equipment main body 1.

[0060] See also Figure 8 - Figure 15 A third air outlet plate 31 is installed inside the equipment body 1, and the air outlet end of the third air outlet plate 31 is directed toward between the first movable cylinder 10 and a group of conveyor belts 15. A fifth air outlet pipe 30 is provided between the second bellows 29 and the third air outlet plate 31, and 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 is blown out from the gap between the first movable cylinder 10 and a group of conveyor belts 15.

[0061] See also Figure 1 - Figure 3 A first collecting box 38 and a second collecting box 39 are installed at the bottom end of the equipment main body 1, and the connecting ends of the first collecting box 38 and the second collecting box 39 are connected to the bottom end of the second baffle 27. The inner wall of one end of the equipment main body 1 is inclined, and the magnetic material falls to the inner wall of the inclined end of the equipment main body 1 and slides into the inside of the second collecting box 39. The coal falls into the inside of the first collecting box 38 through the conveyor belt 15.

[0062] The working principle of the present invention is as follows: when workers use the device to perform magnetic separation on coal, the coal is transported to the feed port 2 after being crushed, and the coal enters the interior of the equipment body 1 through the feed port 2, and falls to 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 sets of second electromagnetic columns 14 are energized, and the first electromagnetic column 11 and the two sets of second electromagnetic columns 14 generate magnetic attraction;

[0063] The first drive motor 3 is started, driving the first drive shaft 4 to rotate clockwise, thereby driving the two sets of protrusions 5 to rotate. The two sets of protrusions 5 alternately contact the bottom end of the movable plate 9. The multiple sets of reciprocating columns 8 cooperate with the two sets of protrusions 5 to drive the movable plate 9 to move up and down, thereby breaking up the coal. The broken up coal moves toward one end of the movable plate 9 and falls onto the outer wall of the first movable cylinder 10.

[0064] When the first drive shaft 4 rotates, the first drive shaft 4 is connected to the first movable cylinder 10 through a synchronous belt, 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, the group of movable rollers 12 rotates, the group of movable rollers 12 is connected to a group of second movable cylinders 13 through a synchronous belt, the group of second movable cylinders 13 rotates, and drives 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, the other group of movable rollers 12 rotates, and the other group of movable rollers 12 is connected to another group of second movable cylinders 13 through a synchronous belt, the other group of second movable cylinders 13 rotates, and the other group of conveyor belts 15 operate;

[0065] When the coal falls onto the outer wall of the first movable cylinder 10 and the first movable cylinder 10 rotates, the first electromagnetic column 11 adsorbs the magnetic material in the coal onto the outer wall of the first movable cylinder 10. The first movable cylinder 10 rotates and carries the magnetic material adsorbed on the outer wall of the first movable cylinder 10 to the area of ​​the first movable cylinder 10 not covered by the first electromagnetic column 11. The magnetic material falls onto the inner wall of one side of the equipment main body 1, which is inclined, and the magnetic material slides into the inside of the second collection box 39.

[0066] The first movable drum 10 rotates clockwise to break up the coal again and transfer the coal to the upper end of a group of conveyor belts 15. Then, a group of conveyor belts 15 transports the coal. A group of conveyor belts 15 transports the coal to a group of second electromagnetic columns 14. A group of second electromagnetic columns 14 generates magnetic attraction for the magnetic material remaining in the coal, thereby improving the magnetic separation effect of the coal. The magnetic material is adsorbed on the outer wall of a group of conveyor belts 15. Then, a group of conveyor belts 15 continues to operate. A group of conveyor belts 15 carries the magnetic material to the upper end area of ​​the first baffle 23, and the magnetic material moves out of the area of ​​the group of second electromagnetic columns 14. The magnetic material falls to the upper end of the first baffle 23, and then slides from the first baffle 23 to the inner wall of one side of the equipment body 1. The magnetic material slides into the inside of the second collection box 39.

[0067] Then the coal on the upper end of one set of conveyor belts 15 falls to the upper end of another set of conveyor belts 15, and the other set of conveyor belts 15 transports the coal. The other set of conveyor belts 15 transports the coal to the area of ​​another set of second electromagnetic columns 14. The other set of second electromagnetic columns 14 generates magnetic attraction on the magnetic material remaining in the coal, further improving the magnetic separation effect of the coal. The magnetic material is adsorbed on the outer wall of the other set of conveyor belts 15, and then the other set of conveyor belts 15 continues to operate. The other set of conveyor belts 15 carries the magnetic material to the upper end of the second collection box 39, and the magnetic material moves out of the area of ​​the other set of second electromagnetic columns 14 and falls into the inside of the second collection box 39.

[0068] Another set of conveyor belts 15 transports the coal so that the coal falls into the first collecting box 38;

[0069] When the second drive motor 36 is started, it drives the second drive shaft 37 to rotate. The second drive shaft 37 extends into the first wind box 18 and the second wind box 29. Fans are installed on the outer walls of both ends of the second drive shaft 37. The two sets of fans rotate to generate airflow inside the first wind box 18 and the second wind box 29.

[0070] When airflow is generated inside the first bellows 18, the airflow enters the first bellows 18 from the first air inlet pipe 19, and then is discharged through the first air outlet pipe 20, the 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 the heat inside the first electromagnetic column 11 is discharged to the outer end of the device body 1 through the first heat dissipation pipe 16, thereby reducing the heat generated by long-term use of the first electromagnetic column 11 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 the heat inside the two groups of second electromagnetic columns 14 is discharged to the outer end of the device body 1 through the two groups of second heat dissipation pipes 17 respectively, thereby reducing the heat generated by long-term use of the two groups of second electromagnetic columns 14 and improving the service life of the two groups of second electromagnetic columns 14;

[0071] 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 the other group of conveyor belts 15, evacuating the coal at the upper end of the other group of conveyor belts 15 again, separating the magnetic material remaining in the coal from the coal, and further improving the efficiency of the coal magnetic separation operation.

[0072] After the airflow enters the fourth air outlet pipe 26, one end of the fourth air outlet pipe 26 extends into the interior of the second baffle 27 and is connected to the second air outlet plate 28. The second air outlet plate 28 directs the airflow toward one end of the other conveyor belt 15, blowing the magnetic material adsorbed on the outer wall of one end of the other conveyor belt 15, blowing the fine coal mixed in the magnetic material, causing the fine coal to fall into the first collection box 38, thereby reducing the waste of coal resources during the magnetic screening process.

[0073] When air flow 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 respectively, and 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 air flow is conducted to the third air outlet plate 31 through the fifth air outlet pipe 30, and the third air outlet plate 31 blows out the air flow, and the air flow 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 during the magnetic screening of coal.

[0074] 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 an appropriate 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 embodiment without creative contribution 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 body (1), a movable plate (9) and a first wind box (18), characterized in that: A movable plate (9) is movably installed inside the device body (1), and a first bellows (18) is installed at one end of the device body (1); A feed port (2) is installed at the upper end of the equipment body (1), a first movable cylinder (10) is movably installed inside the equipment body (1), a 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 body (1), the two groups of movable rollers (12) are respectively connected to the outer walls of the two groups of second movable cylinders (13) with conveyor belts (15), and the two groups of second movable cylinders (13) are each installed with a second electromagnetic column (14); The air inlet end of the first bellows (18) is installed with a first air inlet pipe (19), the air outlet end of the first bellows (18) is installed with a first air outlet pipe (20) and two groups of second air outlet pipes (21), and one end of the first air outlet pipe (20) is connected to 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 body (1), one end 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), the other end of the two groups of second electromagnetic columns (14) are installed with a second heat dissipation pipe (17), and one end of the two groups of second heat dissipation pipes (17) extends to the outer wall of the device body (1); A second bellows (29) is installed at one end of the device body (1), a second drive motor (36) is installed at one end of the device body (1), a second drive shaft (37) is installed at the output end of the second drive motor (36), and both ends of the second drive shaft (37) extend into the first bellows (18) and the second bellows (29), respectively, and fans are installed on the outer walls of both ends of the second drive shaft (37); 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. Both ends of the first baffle (23) are provided with movable columns (25) movably connected to the inner wall of the equipment body (1), and the outer walls of the two groups of movable columns (25) are both installed with torsion springs; A group of movable columns (25) are hollowly arranged, a third air outlet pipe (22) is installed at one end of the first bellows (18), and one end of the third air outlet pipe (22) extends into the interior of the first baffle (23) through a group of movable columns (25), a first air outlet plate (24) is installed at one end of the first baffle (23), and one end of the third air outlet pipe (22) is connected to the first air outlet plate (24), and the air outlet of the first air outlet plate (24) faces a group of conveyor belts (15).

2. A coal magnetic separation device according to claim 1, characterized in that: A support plate (6) is installed inside the device body (1), and a groove (7) is opened at the center of the support plate (6). Multiple groups of reciprocating columns (8) are installed on the upper end of the support plate (6), and the center ends of the multiple groups of reciprocating columns (8) are all provided with springs. The upper ends of the multiple groups of 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 device body (1), and a first driving shaft (4) is installed at the output end of the first driving motor (3), and one end of the first driving shaft (4) extends into the inside of the device body (1). Two groups of protrusions (5) are installed on the outer wall of the first driving shaft (4), and the two groups of protrusions (5) are movably connected to the movable plate (9).

3. A coal magnetic separation device according to claim 2, characterized in that: A synchronous belt is provided between the first drive shaft (4) and the first movable cylinder (10), and a synchronous belt is provided between the first movable cylinder (10) and a group of movable rollers (12), a synchronous belt is provided between one group of movable rollers (12) and a group of second movable cylinders (13), and a synchronous belt is provided between one group of second movable cylinders (13) and another group of movable rollers (12), and a synchronous belt is provided between another group of movable rollers (12) and another group of second movable cylinders (13).

4. A coal magnetic separation device according to claim 1, characterized in that: A second baffle (27) is installed inside the equipment body (1), a second air outlet plate (28) is installed at one end of the second baffle (27), and the air outlet of the second air outlet plate (28) is directed toward one end of a group of conveyor belts (15), a fourth air outlet pipe (26) is installed at one end of the first bellows (18), and the fourth air outlet pipe (26) extends into the interior of the second baffle (27) and is connected to the second air outlet plate (28) at one end.

5. The coal magnetic separation equipment according to claim 1, characterized in that: Two groups of dust collecting boxes (33) are installed at the upper end of the device body (1), two groups of second air inlet pipes (32) are provided at one end of the second air box (29), and one end of the two groups of second air inlet pipes (32) are respectively connected to the two groups of dust collecting boxes (33), and two groups of dust collection plates (35) are installed inside the device body (1), and dust collection pipes (34) are provided between the two groups of dust collecting boxes (33) and the two groups of dust collection plates (35).

6. A coal magnetic separation device according to claim 5, characterized in that: A third air outlet plate (31) is installed inside the equipment body (1), and the air outlet end of the third air outlet plate (31) is directed toward between the first movable cylinder (10) and a group of conveyor belts (15). A fifth air outlet pipe (30) is provided between the second air box (29) and the third air outlet plate (31), connecting them.

7. The coal magnetic separation equipment according to claim 1, characterized in that: A first collecting box (38) and a second collecting box (39) are installed at the bottom end of the device body (1), and the connecting ends of the first collecting box (38) and the second collecting box (39) are connected to the bottom end of the second baffle (27). The inner wall of one end of the device body (1) is inclined.

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