Electromagnetic iron removal device for aluminum oxide powder feedstock

Abstract

The utility model discloses a kind of electromagnetic deironing equipment for alumina powder raw material, it is related to alumina powder processing technical field, including belt conveying line and the reversing drum being installed in the end of belt conveying line, six permanent magnets are arranged in the inside of reversing drum along the circumference and are equally divided, the both ends of multiple permanent magnets are equipped with connecting plate, two fixed rods are symmetrically equipped in the inside of the frame of belt conveying line, wedge-shaped lug is fixedly arranged in the end of fixed rod, and the lug is used to lift the connecting plate passing through when reversing drum rotates, to make permanent magnet away from reversing drum, to eliminate magnetic force. The utility model passes through the mechanical linkage structure of lug and connecting plate, realizes the automatic displacement of permanent magnet in rotating process, makes the magnetic force on transmission belt disappear, and the iron impurities adsorbed automatically drop, so as to be able to instant demagnetization and clean iron impurities without shutdown.

Description

Technical Field

[0001] This utility model relates to the field of alumina powder processing, and in particular to an electromagnetic iron removal device for alumina powder raw materials. Background Technology

[0002] Electromagnetic iron removal of alumina powder is a process that removes iron impurities from raw materials using magnetic separation technology. During the production or transportation of alumina powder, ferromagnetic substances often become contaminated due to equipment wear or environmental factors. These impurities reduce the chemical purity of the alumina powder, affecting the performance and quality of the final product. Electromagnetic iron removal equipment utilizes the principle of magnetic adsorption to effectively capture and separate these iron impurities, thereby ensuring the reliability of alumina powder in high-end applications such as electronics, ceramics, and refractory materials.

[0003] In traditional electromagnetic iron removal equipment, iron impurities continuously adhere to the surface of the iron removal components during operation, causing the magnetic field to gradually weaken and the iron removal efficiency to decrease. To prevent impurity accumulation from affecting equipment performance, the equipment needs to be shut down periodically and the adsorbed iron material manually cleaned. This process not only interrupts production continuity and reduces overall efficiency, but may also accelerate component wear due to frequent start-ups and shutdowns, increasing maintenance costs and operational complexity. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing electromagnetic iron removal equipment for alumina powder, which requires frequent manual cleaning, and to propose an electromagnetic iron removal device for alumina powder raw materials.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0006] An electromagnetic iron removal device for alumina powder raw materials includes a belt conveyor and a reversing roller installed at the end of the belt conveyor. Six permanent magnets are evenly distributed circumferentially inside the reversing roller. Each of the permanent magnets has a connecting plate at both ends. Two fixing rods are symmetrically arranged on the inner side of the frame of the belt conveyor. A wedge-shaped protrusion is fixedly provided at the end of the fixing rod. The protrusion is used to lift the connecting plate when the reversing roller rotates, so that the permanent magnets are away from the reversing roller, thereby eliminating the magnetic force.

[0007] Preferably, the reversing roller includes a cylinder that fits against the belt on the belt conveyor line, with circular frames fixed at both ends of the cylinder, and a rotating shaft fixed at the center of the conveying circular frame, the conveying rotating shaft being connected to a bearing on the belt conveyor line frame.

[0008] Preferably, two limiting rods are symmetrically arranged on the inner side of the permanent magnet, and a central rod is fixedly arranged in the middle of the inner side of the circular frame. The upper end of the limiting rod is inserted into the central rod, and a spring is sleeved on the limiting rod. One end of the spring is in contact with the outer wall of the central rod, and the other end of the spring is connected to the limiting rod.

[0009] Preferably, the belt conveyor is provided with a raw material unloading pipe and an iron material unloading pipe at its end and below, respectively, and mounting components are provided between the raw material unloading pipe and the iron material unloading pipe and the frame of the belt conveyor.

[0010] Preferably, the mounting component includes two mounting rods fixedly installed inside the belt conveyor frame, two fixing posts fixedly provided inside the two mounting rods, slots provided on the sides of the fixing posts, and insert rods fixedly provided at both ends of the raw material pipe and the iron material pipe, the insert rods being inserted into the slots.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the mechanical linkage structure between the protrusion and the connecting plate enables the permanent magnet to automatically shift during rotation, causing the magnetic force on the conveyor belt to disappear and the adsorbed iron impurities to fall off automatically. This allows for instant demagnetization and removal of iron impurities without stopping the machine. This design significantly improves the continuity and production efficiency of iron removal operations, avoiding production interruptions and maintenance costs associated with traditional manual cleaning. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the feeding tube structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the reversing roller structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the reversing roller of this utility model.

[0018] The numbers in the diagram are as follows: 1. Belt conveyor; 11. Reversing roller; 12. Permanent magnet; 13. Connecting plate; 14. Fixing rod; 15. Protrusion; 2. Cylinder; 21. Circular frame; 22. Rotating shaft; 3. Center rod; 31. Limiting rod; 32. Spring; 4. Raw material unloading pipe; 41. Iron material unloading pipe; 5. Mounting rod; 51. Fixing column; 52. Slot; 53. Insert rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0022] Example: This example provides an electromagnetic iron removal device for alumina powder raw materials. See [link to example]. Figure 1-4 Specifically, it includes a belt conveyor 1 and a reversing roller 11 installed at the end of the belt conveyor 1. Six permanent magnets 12 are evenly distributed around the inside of the reversing roller 11. Each end of the permanent magnets 12 is provided with a connecting plate 13. Two fixing rods 14 are symmetrically arranged on the inner side of the frame of the belt conveyor 1. A wedge-shaped protrusion 15 is fixedly provided at the end of the fixing rod 14. A wear-resistant layer is sprayed on the surface of the protrusion 15 and grease is added for lubrication to reduce the coefficient of friction. The protrusion 15 is used to lift the connecting plate 13 when the reversing roller 11 rotates, so that the permanent magnets 12 are away from the reversing roller 11, thereby eliminating the magnetic force.

[0023] In this embodiment, the belt conveyor 1 serves as the material conveyor, and the reversing roller 11 at its end functions as both a guide and an iron remover. Multiple sets of permanent magnets 12 are arranged equidistantly around the reversing roller 11, forming a ring-shaped magnetic field region. During normal operation, the permanent magnets 12 attract ferromagnetic impurities on the belt. Connecting plates 13 are located at both ends of the permanent magnets 12, serving as the force-bearing components for the lifting action. When the reversing roller 11 rotates the connecting plate 13 to the position of the protrusion 15, the wedge-shaped surface gradually lifts the connecting plate 13, forcing the permanent magnets 12 to move axially away from the surface of the cylinder 2 along the limiting rod 31. The increased distance between the magnetic poles and the belt causes the magnetic field strength to weaken, and the attracted iron material detaches due to the loss of magnetic force.

[0024] In the specific implementation process, such as Figure 3 and Figure 4 As shown, the reversing roller 11 includes a cylinder 2 that is in contact with the belt on the belt conveyor line 1. Circular frames 21 are fixed at both ends of the cylinder 2. A rotating shaft 22 is fixed at the center of the conveying circular frame 21. The conveying rotating shaft 22 is connected to a bearing on the frame of the belt conveyor line 1.

[0025] In this embodiment, the cylinder 2 is in direct contact with the belt, and the roller rotates through friction to adjust the conveying direction. The circular frame 21 is fixed at both ends of the cylinder 2 to form a rigid support structure, and the center is connected to the frame bearing through the rotating shaft 22 to ensure rotational stability.

[0026] In the specific implementation process, such as Figure 3 and Figure 4 As shown, two limiting rods 31 are symmetrically arranged on the inner side of the permanent magnet 12, and a central rod 3 is fixedly arranged in the middle of the inner side of the circular frame 21. The upper end of the limiting rod 31 is inserted into the central rod 3, and a spring 32 is sleeved on the limiting rod 31. One end of the spring 32 is in contact with the outer wall of the central rod 3, and the other end of the spring 32 is connected to the limiting rod 31.

[0027] In this embodiment, the limiting rod 31 ensures that the permanent magnet 12 can only move linearly along a preset trajectory (such as radial) and will not wobble. The spring 32 provides the restoring force. When the connecting plate 13 is pushed up by the protrusion 15, the permanent magnet 12 compresses the spring 32 and moves inward; when the connecting plate 13 rotates past the protrusion 15, the pressure disappears, and the elastic force of the spring 32 pushes the permanent magnet 12 to quickly return to its original position, re-adhere to the inner wall of the cylinder 2, and restore the maximum magnetic force for the next adsorption. This mechanism realizes the automatic cycle of the lifting and lowering of the permanent magnet 12.

[0028] In the specific implementation process, such as Figure 1 and Figure 2 As shown, the raw material unloading pipe 4 and the iron material unloading pipe 41 are respectively provided at the end and below of the belt conveyor line 1, and mounting parts are provided between the raw material unloading pipe 4 and the iron material unloading pipe 41 and the frame of the belt conveyor line 1.

[0029] In this embodiment, the raw material lower pipe 4 is located at the front end of the conveyor line. The raw material after iron removal falls into the raw material lower pipe 4 and is collected along the pipe. Iron impurities adsorbed on the belt, when they rotate downwards with the belt, are pushed up by the protrusion 15 to lift the connecting plate 13, causing the permanent magnet 12 to leave the inner wall of the cylinder 2, thus eliminating the magnetic force on the belt. The adsorbed iron impurities fall into the iron material lower pipe 41 and are collected along the pipe.

[0030] In the specific implementation process, such as Figure 1 and Figure 2 As shown, the mounting components include two mounting rods 5 fixedly installed inside the frame of the belt conveyor 1. Two fixing posts 51 are fixedly installed inside the two mounting rods 5. Slots 52 are opened on the side of the fixing posts 51. Insert rods 53 are fixedly installed at both ends of the raw material pipe 4 and the iron material pipe 41. The insert rods 53 are inserted into the slots 52.

[0031] In this embodiment, the mounting rod 5 and the fixing post 51 serve as the mounting base, fixed to the frame to support and position the two feed tubes. Installation is completed by aligning the insertion rods 53 at both ends of the feed tubes and inserting them into the slots 52 of the fixing post 51. This design facilitates quick disassembly and installation of the feed tubes.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electromagnetic iron removal device for alumina powder raw materials, comprising a belt conveyor (1) and a reversing roller (11) installed at the end of the belt conveyor (1), characterized in that: The reversing roller (11) has six permanent magnets (12) evenly distributed around its circumference. Each of the permanent magnets (12) has a connecting plate (13) at both ends. The inner side of the frame of the belt conveyor (1) has two fixed rods (14) symmetrically arranged. The ends of the fixed rods (14) are fixed with wedge-shaped protrusions (15). The protrusions (15) are used to lift the connecting plates (13) when the reversing roller (11) rotates, so that the permanent magnets (12) are away from the reversing roller (11), thereby eliminating the magnetic force.

2. The electromagnetic iron removal device for alumina powder raw material according to claim 1, characterized in that: The reversing roller (11) includes a cylinder (2) that fits against the belt on the belt conveyor (1). Circular frames (21) are fixed at both ends of the cylinder (2). A rotating shaft (22) is fixed at the center of the conveying circular frame (21). The conveying rotating shaft (22) is connected to a bearing on the frame of the belt conveyor (1).

3. The electromagnetic iron removal device for alumina powder raw material according to claim 2, characterized in that: Two limiting rods (31) are symmetrically arranged on the inner side of the permanent magnet (12). A central rod (3) is fixedly arranged in the middle of the inner side of the circular frame (21). The upper end of the limiting rod (31) is inserted into the central rod (3). A spring (32) is sleeved on the limiting rod (31). One end of the spring (32) is in contact with the outer wall of the central rod (3), and the other end of the spring (32) is connected to the limiting rod (31).

4. The electromagnetic iron removal device for alumina powder raw material according to claim 1, characterized in that: The belt conveyor (1) is provided with a raw material unloading pipe (4) and an iron material unloading pipe (41) at its end and below, respectively. The raw material unloading pipe (4) and the iron material unloading pipe (41) are provided with mounting parts between them and the frame of the belt conveyor (1).

5. The electromagnetic iron removal device for alumina powder raw material according to claim 4, characterized in that: The mounting components include two mounting rods (5) fixedly installed inside the frame of the belt conveyor (1). Two fixing posts (51) are fixedly provided inside the two mounting rods (5). Slots (52) are provided on the side of the fixing posts (51). Insert rods (53) are fixedly provided at both ends of the raw material pipe (4) and the iron material pipe (41). The insert rods (53) are inserted into the slots (52).

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