White corundum iron removing and sieving device

Abstract

The utility model discloses white corundum iron removal screening device, and the device is constituted by magnetic separator body, magnetic screening conveyer and material flat laying mechanism. The magnetic separator body is equipped with the rack for supporting, and the inside is provided with the iron impurity conveyer for receiving the iron impurity, and the front end places the white corundum hopper. The magnetic screening conveyer is fixed in the rack through the hanger, and the magnetic roller is driven to rotate by the driving motor, and then drives the conveyer belt to run, realizes the conveying of material, and the magnetic roller can adsorb the iron impurity. The material flat laying mechanism is installed at the top of the magnetic separator body, and the cylinder can adjust the telescopic shaft position according to the feedback of infrared distance sensor, makes the comb material grate comb the white corundum material on the conveyer belt and lay flat, improves the iron removal effect. The iron impurity falls into the iron impurity conveyer and is carried away after separating from the magnetic adsorption, and the pure white corundum material falls into the white corundum hopper, and the screening and iron removal operation is completed.

Description

Technical Field

[0001] This utility model relates to the field of magnetic separator technology, specifically to a white corundum iron removal screening device. Background Technology

[0002] As an important industrial abrasive, the precision of iron impurity removal during the production of white fused alumina directly determines product quality. Current magnetic separation technology for iron removal generally faces screening defects caused by uneven material distribution: In traditional magnetic separator operations, white fused alumina raw materials, after crushing and screening, form multi-stage materials with particle sizes ranging from 0-5mm. When these materials are directly poured into the magnetic separation zone via belt conveyor, localized accumulations exceeding 80mm in thickness often occur. This non-uniform distribution leads to two technical drawbacks: First, the effective adsorption distance between the material at the bottom of the thick layer and the magnetic roller increases. According to the magnetic field decay law, when the material thickness exceeds 50mm, the magnetic field strength at 40mm from the magnetic roller surface has already decreased to 65% of the design value, making it impossible to fully adsorb micron-sized iron impurities (particle size <74μm) embedded in the particle gaps. Second, the arching effect formed by material accumulation hinders the detachment of iron impurities. When the friction angle between particles exceeds 35°, 30% of the iron impurities adsorbed by the magnetic roller, after leaving the magnetic field area, are still re-mixed into the finished product due to material compression. Therefore, based on the problems and defects in the iron removal screening of white fused alumina mentioned above, a white fused alumina iron removal screening device with the function of adjusting the material layer thickness is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a white corundum iron removal screening device to address the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] It includes a magnetic separator body, and a magnetic screening conveyor is installed inside the magnetic separator body. A material spreading and evenly distributing mechanism is fixed to the top of the magnetic screening conveyor body.

[0005] The magnetic separator body includes a frame, a hanger fixed at the four corners inside the frame for suspending the magnetic screening conveyor, and an iron impurity conveyor fixed at the bottom inside the frame. A white corundum hopper is placed on the front side of the frame below the discharge port of the magnetic screening conveyor.

[0006] The magnetic screening conveyor includes two metal side plates arranged in a mirror image, a magnetic roller rotatably arranged on the front side between the metal side plates, and a driven roller rotatably arranged on the rear side between the metal side plates. A conveyor belt is wound around the outer ring of the magnetic roller and the driven roller. A drive motor for driving the magnetic roller is fixed to the front section of the outer side wall of the left metal side plate.

[0007] The material spreading and evenly spreading mechanism includes two sets of vertically arranged cylinders, a telescopic shaft fixed to the telescopic end of the cylinder, and a support bar fixed to the bottom end of the telescopic shaft. A comb is fixedly connected to the bottom surface of the support bar, and an infrared distance sensor is fixedly connected to the front surface of the cylinder housing.

[0008] As a preferred embodiment of this utility model: a top plate is fixedly connected to the top end face of the frame, and the top surface of the cylinder is fixed to the lower surface of the top plate by bolts.

[0009] As a preferred embodiment of this utility model, the four ends of the bottom of the hanger are respectively fixedly connected to the four corners of the upper surface of the metal side plate.

[0010] As a preferred embodiment of this utility model: an electrical control box is fixedly connected to the left side wall of the frame, and the iron impurity conveyor is arranged horizontally below the magnetic screening conveyor to receive iron impurities that fall downwards after detaching from the magnetic adsorption of the magnetic roller.

[0011] As a preferred embodiment of this utility model: the front section of the metal side plate on the left side is provided with a through hole, and a bearing adapted to the output shaft of the drive motor is installed inside the through hole, and the output shaft of the drive motor is fixedly connected to the left end of the magnetic roller through a coupling.

[0012] As a preferred embodiment of this utility model: a compressor unit for supplying compressed air by a position cylinder is installed on the rear side wall of the frame.

[0013] As a preferred embodiment of this utility model: the length of the support bar and the comb grate is equal to the width of the conveyor belt, and the bottom surface of the comb grate is in contact with the white corundum material transported on the upper surface of the conveyor belt.

[0014] As a preferred embodiment of this utility model: the interior of the combing grate is provided with multiple strip-shaped openings arranged in a linear array for combing and flattening the white corundum material to be screened on the conveyor belt.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] The frame of the magnetic separator, along with its hangers and other structures, provides stable support and a rational layout for the equipment. In the magnetic screening conveyor, magnetic rollers and driven rollers, working in conjunction with a conveyor belt, continuously and stably transport materials and adsorb iron impurities, while the drive motor provides power for operation. The material spreading mechanism, with its cylinders and infrared distance sensors, precisely controls the position of the comb grate, evenly spreading the material and improving iron removal efficiency and effectiveness. The iron impurity conveyor promptly receives and removes iron impurities, while the white fused alumina hopper facilitates the collection of pure materials. The overall structure is compact, with all components working collaboratively to achieve highly efficient iron removal and screening of white fused alumina. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of a white corundum magnetic separator.

[0019] Figure 2 This is a schematic diagram of the magnetic separator body;

[0020] Figure 3 This is a schematic diagram of a magnetic screening conveyor.

[0021] Figure 4 This is a schematic diagram of a material spreading and distributing mechanism.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Magnetic separator body; 11. Frame; 12. Top plate; 13. Hanger; 14. White corundum hopper; 15. Electrical control box; 16. Iron impurity conveyor; 2. Magnetic screening conveyor; 21. Metal side plate; 22. Drive motor; 23. Magnetic roller; 24. Conveyor belt; 25. Driven roller; 3. Material spreading and evening mechanism; 31. Cylinder; 32. Telescopic shaft; 33. Infrared distance sensor; 34. Support bar; 35. Combing grate. Detailed Implementation

[0024] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0025] Example 1: The white fused alumina iron removal screening device includes a magnetic separator body 1. A top plate 12 is fixedly connected to the top end face of the frame 11 of the magnetic separator body 1. Hangers 13 are fixed at the four corners inside the frame 11. An iron impurity conveyor 16 is fixed below. A white fused alumina hopper 14 is placed on the front side of the frame 11. An electrical control box 15 is fixed to the left side wall. A compressor unit is installed on the rear side wall. The magnetic screening conveyor 2 is set in the inner cavity of the magnetic separator body 1. The four ends of the hangers 13 are fixedly connected to the four corners of the upper surface of two mirror-symmetrical metal side plates 21 of the magnetic screening conveyor 2. A magnetic roller 23 is rotatably mounted on the front side of the metal side plates 21 of the magnetic screening conveyor 2, and a driven roller 25 is rotatably mounted on the rear side. A conveyor belt 24 is wound around the outer ring of the magnetic roller 23 and the driven roller 25. A drive motor 22 is fixed to the front section of the outer wall of the left metal side plate 21. A through hole is opened in the front section of the left metal side plate 21, and a bearing adapted to the output shaft of the drive motor 22 is installed inside. The output shaft of the drive motor 22 is fixedly connected to the left end of the magnetic roller 23 through a coupling. The material spreading and evenly distributing mechanism 3 is set on top of the magnetic screening conveyor 2. The top surfaces of its two sets of vertically arranged cylinders 31 are fixed to the lower surface of the top plate 12 by bolts. The telescopic ends of the cylinders 31 are fixed with telescopic shafts 32, and the bottom ends of the telescopic shafts 32 are fixed with support bars 34. The bottom surface of the support bars 34 is fixedly connected with a comb grate 35. The front surface of the cylinder housing is fixedly connected with an infrared distance sensor 33. The length of the support bars 34 and the comb grate 35 is equal to the width of the conveyor belt 24. The bottom surface of the comb grate 35 is in contact with the white corundum material transported on the upper surface of the conveyor belt 24. The comb grate 35 has multiple strip-shaped openings arranged in a linear array inside. During operation, the white fused alumina material is poured into the magnetic screening conveyor 2. The drive motor 22 drives the magnetic roller 23 to rotate, which in turn drives the conveyor belt 24. The cylinder 31 adjusts the position of the telescopic shaft 32 based on the feedback from the infrared distance sensor 33, so that the comb 35 combs and flattens the material. The magnetic roller 23 adsorbs iron impurities. After the iron impurities move with the conveyor belt 24 to the position where they are no longer magnetically adsorbed, they fall onto the iron impurity conveyor 16. The white fused alumina material falls from the discharge port of the magnetic screening conveyor 2 into the white fused alumina hopper 14.

[0026] Example 2: The magnetic separator body 1 of the white fused alumina iron removal screening device has the same structure as in Example 1, with the frame 11 being an integral frame structure providing stable support. The magnetic screening conveyor 2 is installed inside the magnetic separator body 1 and connected to the frame 11 via a hanger 13 to ensure stable operation. The cylinder 31 of the material spreading and evenly spreading mechanism 3 is supplied with compressed air by a compressor unit installed on the rear side wall of the frame 11. During the iron removal screening process, the white fused alumina material enters the magnetic screening conveyor 2, and the drive motor 22 drives the magnetic roller 23 and the conveyor belt 24 to move. The cylinder 31 of the material spreading and evenly spreading mechanism 3 is activated, causing the comb 35 to contact the material on the conveyor belt 24 with appropriate force, spreading the material evenly and improving the iron removal effect. Iron impurities are adsorbed by the magnetic roller 23 and move with the conveyor belt 24. When they reach the non-magnetic area, they fall onto the iron impurity conveyor 16 and are transported away, while the pure white fused alumina material falls into the white fused alumina hopper 14, completing the screening and iron removal process.

[0027] Example 3: In this white fused alumina iron removal screening device, the frame 11 of the magnetic separator body 1 is made of high-strength steel to ensure the overall strength of the device. The magnetic roller 23 of the magnetic screening conveyor 2 has strong magnetism and can effectively adsorb iron impurities in the white fused alumina material. The combing grate 35 of the material spreading and evenly spreading mechanism 3 is made of wear-resistant material to adapt to the working environment of long-term friction with the material. When performing white fused alumina iron removal screening, the material enters the magnetic screening conveyor 2, the drive motor 22 starts, driving the magnetic roller 23 and the conveyor belt 24 to rotate in a cycle. The cylinder 31 of the material spreading and evenly spreading mechanism 3 extends and retracts according to the set program, so that the combing grate 35 combs and evenly spreads the material, making the material evenly distributed on the conveyor belt 24. When the iron impurities pass through the magnetic roller 23, they are adsorbed onto the surface of the conveyor belt 24. As the conveyor belt 24 continues to move, after leaving the magnetic range of the magnetic roller 23, the iron impurities fall onto the iron impurity conveyor 16, while the white fused alumina material falls from the discharge port into the white fused alumina hopper 14, thus achieving effective separation of white fused alumina and iron impurities.

[0028] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows:

[0029] The white corundum material to be screened and de-ironed is conveyed to the starting end of the magnetic screening conveyor 2 inside the magnetic separator body 1 and poured onto the conveyor belt 24. At this time, the drive motor 22 starts, and its output shaft drives the magnetic roller 23 to rotate through the coupling. Since the conveyor belt 24 is wrapped around the outer ring of the magnetic roller 23 and the driven roller 25, the conveyor belt 24 will start to circulate under the drive of the magnetic roller 23 and the driven roller 25, conveying the white corundum material towards the discharge port. At the same time, the material spreading mechanism 3 starts working. The compressor unit installed on the rear side wall of the frame 11 provides compressed air to the cylinder 31. The cylinder 31 adjusts the extension length of the telescopic shaft 32 according to the distance information fed back by the infrared distance sensor 33 fixedly connected to the front surface of its outer shell. This causes the support bar 34 fixed to the bottom end of the telescopic shaft 32 to move up and down, so that the comb 35 fixed to the bottom surface of the support bar 34 contacts the white corundum material transported on the upper surface of the conveyor belt 24 with appropriate force. The multiple strip openings arranged in a linear array inside the comb 35 will comb and spread the material, so that the material is evenly distributed on the conveyor belt 24, increasing the contact area and contact time between the material and the magnetic roller 23.

[0030] As the material moves along the conveyor belt 24, the magnetic force generated by the magnetic roller 23 attracts iron impurities in the white fused alumina material, causing the iron impurities to adhere to the surface of the conveyor belt 24. As the conveyor belt 24 continues to move forward, when the iron impurities move to the area where they are no longer attracted by the magnetic force of the magnetic roller 23, they fall downwards under the influence of gravity due to the loss of magnetic force. The iron impurity conveyor 16, which is fixed horizontally inside the lower part of the frame 11, catches these falling iron impurities and transports them to a designated location for processing. The pure white fused alumina material after iron removal continues to move along the conveyor belt 24 until it falls from the discharge port of the magnetic screening conveyor 2 into the white fused alumina hopper 14 located below the discharge port on the front side of the frame 11, completing the entire iron removal and screening process of the white fused alumina.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A white corundum iron removal screening device, comprising a magnetic separator body (1), characterized in that: The inner cavity of the magnetic separator body (1) is provided with a magnetic screening conveyor (2), and the top of the magnetic screening conveyor (2) is provided with a material spreading and averaging mechanism (3) fixed inside the magnetic separator body (1). The magnetic separator body (1) includes a frame (11), a hanger (13) fixed inside the frame (11) at the four corners for suspending the magnetic screening conveyor (2), and an iron impurity conveyor (16) fixed inside the frame (11) at the bottom. A white corundum hopper (14) is placed on the front side of the frame (11) below the discharge port of the magnetic screening conveyor (2). The magnetic screening conveyor (2) includes two metal side plates (21) arranged in a mirror image, a magnetic roller (23) rotatably arranged on the front side between the metal side plates (21), a driven roller (25) rotatably arranged on the rear side between the metal side plates (21), and a conveyor belt (24) is wound around the outer ring of the magnetic roller (23) and the driven roller (25). A drive motor (22) for driving the magnetic roller (23) is fixed on the front section of the outer side wall of the left side metal side plate (21). The material spreading and even spreading mechanism (3) includes two sets of vertically arranged cylinders (31), a telescopic shaft (32) fixed to the telescopic end of the cylinder (31), and a support bar (34) fixed to the bottom end of the telescopic shaft (32). A comb (35) is fixedly connected to the bottom surface of the support bar (34). An infrared distance sensor (33) is fixedly connected to the front surface of the outer shell of the cylinder (31).

2. The white corundum iron removal screening device according to claim 1, characterized in that: The top end face of the frame (11) is fixedly connected to a top plate (12), and the top surface of the cylinder (31) is fixed to the lower surface of the top plate (12) by bolts.

3. The white corundum iron removal screening device according to claim 1, characterized in that: The four ends of the bottom of the hanger (13) are fixedly connected to the four corners of the upper surface of the metal side plate (21).

4. The white corundum iron removal screening device according to claim 1, characterized in that: An electrical control box (15) is fixedly connected to the left side wall of the frame (11). The iron impurity conveyor (16) is arranged horizontally below the magnetic screening conveyor (2) to receive iron impurities that fall downwards after being magnetically attracted by the magnetic roller (23).

5. The white corundum iron removal screening device according to claim 1, characterized in that: The front section of the metal side plate (21) on the left side has a through hole, and a bearing adapted to the output shaft of the drive motor (22) is installed inside the through hole. The output shaft of the drive motor (22) is fixedly connected to the left end of the magnetic roller (23) through a coupling.

6. The white corundum iron removal screening device according to claim 1, characterized in that: The rear side wall of the frame (11) is equipped with a compressor unit that supplies compressed air to a position cylinder (31).

7. The white corundum iron removal screening device according to claim 1, characterized in that: The lengths of the support bar (34) and the comb (35) are equal to the width of the conveyor belt (24), and the bottom surface of the comb (35) is in contact with the white corundum material transported on the upper surface of the conveyor belt (24).

8. The white corundum iron removal screening device according to claim 1, characterized in that: The comb (35) has multiple strip openings arranged in a linear array inside, which are used to comb and flatten the white corundum material to be screened on the conveyor belt (24).

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