A device for dynamically adjusting the grade of a mineral material on a conveyor belt

Abstract

The utility model relates to mineral aggregate processing technical field especially is related to a kind of special device of conveying belt of mineral aggregate grade dynamic adjustment, it includes conveying belt and magnetic force cylinder, magnetic force cylinder rotates and is installed in the discharge end of conveying belt, further include distributing plate, drive unit and electrical control unit, distributing plate is slidably arranged below magnetic force cylinder along the length direction of conveying belt, distributing plate is triangular structure and tip end is upward, drive unit is connected with distributing plate for driving distributing plate to move, electrical control unit includes grade sensor for detecting the grade of mineral aggregate on conveying belt, position sensor for detecting the position of distributing plate, PLC controller for controlling the magnetic field intensity of magnetic force cylinder and the work of drive unit and motor for driving magnetic force cylinder.According to the different of mineral aggregate grade, the position of distributing plate is automatically adjusted, to realize efficient, accurate, low-cost mineral aggregate grade dynamic adjustment requirement, improve mineral aggregate sorting effect and operator's operation convenience.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing technology, and in particular to a special device for conveyor belts for dynamic adjustment of mineral grade. Background Technology

[0002] With the continuous advancement of ore grade and conditioning technologies, existing ore processing systems have been widely adopted. However, these systems still face some challenges in practical operation. For instance, existing ore grade conditioning typically relies on preset fixed parameters, leading to inefficiencies, operational complexity, and unstable performance when processing ores of varying grades.

[0003] To address these issues, some attempts have been made, such as combining multi-stage magnetic separation and flotation to improve ore grade. While these methods have improved ore grade to some extent, they still have limitations, such as low processing efficiency, high energy consumption, and high equipment complexity.

[0004] Chinese utility model patent CN212284431U discloses a mineral processing system for improving the grade of rare earth ore. This product employs a combination of a vertical ring high-gradient magnetic separator and a superconducting magnetic separator with flotation to screen rare earth concentrate. While it can achieve purification and grade improvement of rare earth ore, its complex processing flow requires multiple stages of equipment, resulting in a large footprint, high energy consumption, and increased costs. Therefore, this design cannot meet the demand for efficient, energy-saving, and low-cost dynamic adjustment of ore grade.

[0005] Chinese utility model patent CN212651973U discloses a dry-wet hybrid magnetic separator, which combines dry and wet separation processes to adapt to different magnetic separation precision requirements. While this design allows for the use of a single magnetic separator to perform mineral processing steps with varying recovery rates or concentrate grades, its magnetic separation precision is limited by the performance of the individual device and it cannot dynamically adjust the ore on the conveyor belt in real time. Therefore, it struggles to guarantee stable and efficient processing results when dealing with ore with significant grade fluctuations. Consequently, this product fails to meet the demand for new ore grade adjustment devices with higher requirements for intelligence and real-time response.

[0006] The aforementioned problems indicate that current mineral grade adjustment systems on the market are ill-equipped to effectively address the new demands for efficient, energy-saving, and low-cost dynamic adjustment under complex operating conditions. Therefore, there is an urgent need for a dedicated conveyor belt device for dynamic mineral grade adjustment to overcome these shortcomings and provide a more intelligent, efficient, and adaptable solution for changing environments. Utility Model Content

[0007] In order to solve the problems existing in the prior art, the present invention provides a special device for conveyor belt with dynamic adjustment of mineral grade.

[0008] The present invention provides a conveyor belt device for dynamic adjustment of ore grade, which adopts the following technical solution: A special conveyor belt device for dynamic adjustment of ore grade includes a conveyor belt and a magnetic drum. The magnetic drum is rotatably installed at the unloading end of the conveyor belt. The device further includes a material distribution plate, a drive unit, and an electrical control unit. The material distribution plate is slidably disposed below the magnetic drum along the length of the conveyor belt. The material distribution plate has a triangular structure with its tip pointing upwards. The drive unit is connected to the material distribution plate to drive its movement. The electrical control unit includes a grade sensor for detecting the ore grade on the conveyor belt, a position sensor for detecting the position of the material distribution plate, a PLC controller for controlling the magnetic field strength of the magnetic drum and the operation of the drive unit, and a motor for driving the magnetic drum.

[0009] By adopting the above technical solution, the position of the sorting plate is automatically adjusted according to the different grades of the ore, so as to realize the dynamic, efficient, accurate and low-cost dynamic adjustment of ore grade, improve the ore sorting effect, and at the same time improve the ease of operation for operators.

[0010] Preferably, the drive unit includes a hydraulic cylinder disposed on one side of the material distribution plate, the piston rod of the hydraulic cylinder being connected to the outer wall of the material distribution plate, and the electrical control unit further includes a solenoid valve for controlling the movement of the hydraulic cylinder.

[0011] By adopting the above technical solution, the hydraulic cylinder is simple and stable to operate, and works well with the material distribution plate.

[0012] Preferably, it also includes a remote host computer, which communicates with the electrical control unit via a wireless communication module.

[0013] By adopting the above technical solution, operators can send commands to the electrical control unit via a remote host computer.

[0014] Preferably, the remote host computer includes a monitoring interface and a control interface.

[0015] By adopting the above technical solution, it is convenient for operators to monitor and input commands in real time.

[0016] Preferably, guide rails are horizontally arranged on the left and right sides of the material distribution plate along the moving direction, and the material distribution plate is slidably supported on the two guide rails.

[0017] By adopting the above technical solution, the material distribution plate is supported by the guide rail and can move along the guide rail, which improves the stability of the material distribution plate.

[0018] Preferably, the guide rail includes two plates arranged parallel to each other vertically. A vertical support plate is fixedly connected to the top surface of the bottom plate of the distribution plate, and sliding rods that slide between the two plates of the guide rail are fixedly connected to the left and right sides of the vertical support plate, respectively.

[0019] By adopting the above technical solution, the material distribution plate is effectively supported between the two guide rails, which facilitates the material distribution plate to achieve the material distribution effect.

[0020] Preferably, the magnetic roller includes multiple magnetic units located inside and a wear-resistant layer located outside. The magnetic units include permanent magnets and electromagnetic coils that are uniformly distributed along the axial direction of the magnetic roller.

[0021] By adopting the above technical solution, multiple magnetic units inside the magnetic drum can achieve magnetic fields of different intensities through the current adjustment of electromagnetic coils, thereby adapting to ore materials of different grades.

[0022] Preferably, the material distribution plate has a double-layer equilateral triangle structure.

[0023] By adopting the above technical solution, the double-layer structure has higher strength, and the equilateral triangle structure is stable and the material is evenly distributed. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a special conveyor belt device for dynamic adjustment of ore grade according to an embodiment of this utility model.

[0025] Figure 2 This is a schematic diagram of the structure of the magnetic roller according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the material distribution plate according to an embodiment of the present utility model.

[0027] Figure 4 This is a schematic diagram of the electrical control unit according to an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Conveyor belt; 2. Magnetic roller; 20. Magnetic unit; 200. Permanent magnet; 201. Electromagnetic coil; 21. Wear-resistant layer; 3. Material distribution plate; 30. Guide rail; 31. Vertical support plate; 32. Slide rod; 4. Drive unit; 40. Hydraulic cylinder; 400. Piston rod; 5. Electrical control unit; 50. Grade sensor; 51. Position sensor; 52. PLC controller; 53. Solenoid valve; 54. Motor; 55. Wireless communication module; 6. Remote host computer. Detailed Implementation

[0029] The following combination Figures 1-4 The present invention will be described in further detail below.

[0030] This utility model discloses a special device for conveyor belts with dynamic adjustment of ore grade. (Refer to...) Figure 1 The conveyor belt device for dynamic adjustment of ore grade includes a conveyor belt 1, a magnetic roller 2, a material distribution plate 3, a drive unit 4, an electrical control unit 5, and a remote host computer 6. Among them, the conveyor belt 1 is used to transport ore.

[0031] The conveyor belt 1 wraps around the magnetic roller 2, which is rotatably mounted at the unloading end of the conveyor belt 1. It is used to magnetically attract magnetic ores in the ore. The magnetic roller 2 is cylindrical with a diameter of 1.6m. It includes 6 magnetic units 20 inside and a wear-resistant layer 21 outside. Each magnetic unit 20 includes 12 permanent magnets 200 and 6 electromagnetic coils 201. The permanent magnets 200 and electromagnetic coils 201 are evenly distributed along the axial direction of the magnetic roller 2. The magnetic strength of each magnetic unit 20 can be adjusted by controlling the current of the electromagnetic coils 201. The wear-resistant layer 21 can be made of high-hardness alloy material with a thickness of 2-5mm to improve the service life of the magnetic roller 2.

[0032] The material distribution plate 3 is located below the magnetic roller 2 and is suspended in the air. It has a double-layer equilateral triangle structure with one tip pointing upwards. The material distribution plate 3 can be made of high-strength stainless steel with a thickness of 5-10mm to ensure its stability and durability when moving left and right. The material distribution plate 3 has horizontal guide rails 30 on the left and right sides along the direction of movement. The guide rails 30 include two plates arranged symmetrically up and down. A vertical support plate 31 is vertically fixed to the center of the top surface of the bottom plate of the material distribution plate 3. The left and right sides of the vertical support plate 31 are respectively horizontally fixed with sliding rods 32 that pass through the two plates of the guide rails 30. The material distribution plate 3 is supported on the two guide rails 30 by the sliding rods 32.

[0033] The drive unit 4 includes a fixedly mounted hydraulic cylinder 40. The hydraulic cylinder 40 has a thrust range of 0-5000N and a stroke range of 0-500mm. The piston rod 400 of the hydraulic cylinder 40 is fixedly connected to one side outer wall of the material distribution plate 3. The extension direction of the piston rod 400 is the same as the extension direction of the guide rail 30. The piston rod 400 is located between the two guide rails 30. The piston rod 400 can be made of high-hardness alloy steel to improve its pressure resistance and fatigue resistance. Driven by the hydraulic cylinder 40, the material distribution plate 3 can move in the left and right directions.

[0034] The electrical control unit 5 controls the thrust and stroke of the hydraulic cylinder 40 to ensure the precise movement of the material distribution plate 3. The electrical control unit 5 includes a grade sensor 50, a position sensor 51, a PLC controller 52, a solenoid valve 53, a motor 54, and a wireless communication module 55. The grade sensor 50 uses an X-ray fluorescence analyzer to detect the grade of the ore on the conveyor belt 1; the position sensor 51 uses a photoelectric encoder to detect the position of the material distribution plate 3; the PLC controller 52 is used to logically control the current of the electromagnetic coil 201 and the thrust of the hydraulic cylinder 40; the solenoid valve 53 is used to control the extension and retraction of the hydraulic cylinder 40; the motor 54 is a servo motor to drive the rotation of the magnetic roller 2; and the wireless communication module 55 is used to communicate with a remote host computer 6.

[0035] The remote host computer 6 uses an industrial-grade computer, which includes a monitoring interface and a control interface. The monitoring interface is used to display the ore grade and the position of the material distribution plate 3 in real time, and the control interface is used to adjust the current of the electromagnetic coil 201 and the thrust of the hydraulic cylinder 40. The remote host computer 6 is connected to the electrical control unit 5 through the wireless communication module 55. The operator can monitor and adjust the dynamic adjustment process of the ore grade through the remote host computer 6.

[0036] The implementation principle of the conveyor belt special device for dynamic adjustment of mineral grade in this utility model embodiment is as follows: the mineral material is transported to the unloading end of the conveyor belt 1 through the conveyor belt 1. The magnetic field generated by the magnetic roller 2 adsorbs the magnetic ore in the mineral material, causing the magnetic ore to be adsorbed on the conveyor belt 1 and continue to move a certain distance. The non-magnetic rocks are not affected by the magnetic field and are directly thrown off, thus separating the magnetic ore and the non-magnetic ore. The separating plate 3 is located below the magnetic roller 2 and can move left and right along the guide rail 30 through the drive of the hydraulic cylinder 40, thereby adjusting the separation effect of magnetic ore and non-magnetic rocks.

[0037] The multiple magnetic units 20 inside the magnetic roller 2 can achieve magnetic fields of different intensities by adjusting the current of the electromagnetic coil 201, thus adapting to ore materials of different grades. When the grade sensor 50 detects a change in the grade of the ore material on the conveyor belt 1, the PLC controller 52 adjusts the current of the electromagnetic coil 201 according to the detection result, changing the magnetic field strength of the magnetic roller 2. At the same time, based on the position sensor 51 detecting the position of the distribution plate 3, it controls the thrust and stroke of the hydraulic cylinder 40, causing the distribution plate 3 to move along the guide rail 30, thus achieving dynamic adjustment.

[0038] The remote host computer 6 is connected to the electrical control unit 5 via the wireless communication module 55. Operators can monitor and adjust the dynamic adjustment process of ore grade in real time through the remote host computer 6 to ensure the efficiency and stability of ore processing.

[0039] This embodiment of the invention utilizes multiple magnetic units 20 inside the magnetic roller 2 to achieve magnetic fields of varying intensities, adapting to different grades of ore and improving the flexibility and adaptability of ore grade adjustment. The equilateral triangular structure of the separating plate 3 and the precise control of the hydraulic cylinder 40 effectively regulate the separation of ore and rock, ensuring dynamic adjustment of ore grade and improving the efficiency and stability of ore processing. Through the combination of a remote host computer 6 and an electrical control unit 5, operators can monitor and adjust the dynamic adjustment process of ore grade in real time, achieving intelligent and automated ore processing and reducing the complexity and cost of manual operation.

[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A special device for conveyor belt with dynamic adjustment of ore grade, comprising a conveyor belt (1) and a magnetic roller (2), wherein the magnetic roller (2) is rotatably mounted on the unloading end of the conveyor belt (1), characterized in that: It also includes a material distribution plate (3), a drive unit (4) and an electrical control unit (5). The material distribution plate (3) is slidably disposed below the magnetic roller (2) along the length of the conveyor belt (1). The material distribution plate (3) has a triangular structure with the tip pointing upward. The drive unit (4) is connected to the material distribution plate (3) to drive the material distribution plate (3) to move. The electrical control unit (5) includes a grade sensor (50) for detecting the grade of the ore on the conveyor belt (1), a position sensor (51) for detecting the position of the material distribution plate (3), a PLC controller (52) for controlling the magnetic field strength of the magnetic roller (2) and the operation of the drive unit (4), and a motor (54) for driving the magnetic roller (2).

2. The conveyor belt device for dynamic adjustment of ore grade according to claim 1, characterized in that: The drive unit (4) includes a hydraulic cylinder (40) disposed on one side of the material distribution plate (3). The piston rod (400) of the hydraulic cylinder (40) is connected to the outer wall of the material distribution plate (3). The electrical control unit (5) also includes a solenoid valve (53) for controlling the action of the hydraulic cylinder (40).

3. The conveyor belt device for dynamic adjustment of ore grade according to claim 1, characterized in that: It also includes a remote host computer (6), which is connected to the electrical control unit (5) via a wireless communication module (55).

4. The conveyor belt device for dynamic adjustment of ore grade according to claim 3, characterized in that: The remote host computer (6) includes a monitoring interface and a control interface.

5. The conveyor belt device for dynamic adjustment of ore grade according to claim 1, characterized in that: The material distribution plate (3) is horizontally provided with guide rails (30) on the left and right sides along the moving direction, and the material distribution plate (3) slides and is supported on the two guide rails (30).

6. The conveyor belt device for dynamic adjustment of ore grade according to claim 5, characterized in that: The guide rail (30) includes two plates arranged in parallel. A vertical support plate (31) is vertically fixed to the top surface of the bottom plate of the material distribution plate (3). Sliding rods (32) that slide between the two plates of the guide rail (30) are fixed to the left and right sides of the vertical support plate (31).

7. The conveyor belt device for dynamic adjustment of ore grade according to claim 1, characterized in that: The magnetic roller (2) includes multiple magnetic units (20) located inside and a wear-resistant layer (21) located outside. The magnetic unit (20) includes permanent magnets (200) and electromagnetic coils (201) uniformly distributed along the axial direction of the magnetic roller (2).

8. The conveyor belt device for dynamic adjustment of ore grade according to claim 1, characterized in that: The material distribution plate (3) has a double-layer equilateral triangle structure.

Images