Magnetic separator with anti-blocking structure

Abstract

The utility model relates to the technical field of boron carbide production, in particular to a magnetic separator with an anti-blocking structure, which comprises a treatment box, the top of the treatment box is provided with a material inlet, the inside of the material inlet is respectively and rotatably connected with a material scraping roller and a material scattering assembly from top to bottom, and a material distributing assembly is rotatably connected between the inner walls of the treatment box. The material scattering assembly is located above the material distributing assembly, the outer portion of the treatment box is rotationally connected with a chain wheel assembly, a partition plate is fixedly connected between the inner walls of the treatment box, and the partition plate is located below the material distributing assembly. According to the improved magnetic separator, the material scraping roller, the first material scattering roller and the second material scattering roller are arranged in the material inlet, so that material blockage can be effectively prevented, the material scraping roller pretreats materials just entering equipment, and the burden of the subsequent material scattering roller is reduced; the two groups of material dispersing rollers which rotate relatively are used for dispersing agglomerated raw materials, so that wrapped metal impurities are exposed, the magnetic separation accuracy is improved, and even water-containing materials can enter a subsequent treatment link smoothly.

Description

Technical Field

[0001] This utility model relates to the field of boron carbide technology, specifically a magnetic separator with a built-in anti-clogging structure. Background Technology

[0002] Boron carbide is an inorganic compound composed of boron and carbon. It is characterized by high hardness, low density, high melting point, and good chemical stability. The production of boron carbide involves a series of chemical reactions and processes that convert boron and carbon sources into boron carbide.

[0003] In the production process of boron carbide, after initial screening, a magnetic separator is used to further filter the raw materials. This is because these raw materials may contain magnetic impurities, such as iron filings and iron oxide. The presence of these magnetic impurities affects the purity and quality of the boron carbide product. The magnetic separator utilizes the magnetic field to effectively separate these magnetic impurities, improving the purity of the boron carbide raw material. It mainly consists of a magnetic system, a cylinder (or drum), a trough, and a transmission system. The magnetic separator uses the magnetic field generated by the magnetic system to cause materials with different magnetic properties to move along different trajectories on the surface or inside the cylinder (or drum), thereby separating magnetic and non-magnetic materials. Currently, magnetic separators are divided into wet magnetic separation and dry magnetic separation. However, due to the ease of hydrolysis, sensitivity to moisture, and potential chemical reactions in water, dry magnetic separation is more suitable for boron carbide raw materials.

[0004] In the process of realizing this utility model, the inventors discovered the following problems with the existing technology: 1. Due to the possibility of agglomeration in the raw materials of boron carbide, metal impurities are very likely to be mixed in, making it difficult for the magnetic field to act directly on the metal impurities, thereby reducing the magnetic separation effect; 2. Because some raw materials contain moisture, although the feed inlet of most magnetic separators slows down the feeding speed, the raw materials containing moisture will have a certain viscosity. In addition, the agglomerated raw materials will cause blockage of the feed inlet after long-term use. Utility Model Content

[0005] The purpose of this invention is to provide a magnetic separator with a built-in anti-clogging structure to solve the problems mentioned in the background art, such as some metal impurities being encased in the cohesive raw materials, making it difficult for the magnetic field to directly act on the metal impurities, thereby reducing the magnetic separation effect and causing inlet blockage due to the raw materials themselves. To achieve the above objective, this invention provides the following technical solution: a magnetic separator with a built-in anti-clogging structure, including a processing box, with an inlet at the top of the processing box, a scraper roller and a material unloading assembly rotatably connected from top to bottom inside the inlet, a material distribution assembly rotatably connected between the inner walls of the processing box, the material unloading assembly being located above the material distribution assembly, a sprocket assembly rotatably connected to the outside of the processing box, a partition plate fixedly connected between the inner walls of the processing box, the partition plate being located below the material distribution assembly, and a first stop block and a second stop block fixedly connected to both ends inside the processing box, the first stop block and the second stop block being arranged opposite each other and located above the material distribution assembly.

[0006] The feeding assembly consists of a first feeding roller and a second feeding roller. The first feeding roller and the second feeding roller are symmetrically distributed and rotatably connected to the inner wall of the feed inlet. A first bevel gear is installed at the shaft end of each of the first feeding rollers and the second feeding roller. A second bevel gear is vertically distributed at one end of each of the first bevel gears and meshes with it. The second bevel gears are coaxially connected to each other.

[0007] The material distribution assembly consists of an outer cylinder and an inner cylinder. The outer cylinder is sleeved on the outside of the inner cylinder. The outer wall of the inner cylinder has shaft heads at both ends, and the shaft heads pass through the outer cylinder and are fixedly connected to the inner wall of the processing box. The outer wall of the inner cylinder is fixedly connected with a magnetic block.

[0008] The sprocket assembly consists of a driving sprocket and a driven sprocket, which are connected by a chain.

[0009] More preferably, the feed inlet has a structure that is wider at the top and narrower at the bottom, with the narrower end extending into the interior of the processing box, and the first and second unloading rollers located inside the narrower end. At the same time, the bottom of the feed inlet has an inclined opening with one end higher and the other end lower, and the outer cylinder is located below the opening.

[0010] More preferably, the outer walls of the first and second feed rollers are respectively spirally arranged with symmetrically distributed helical blades, and the first and second feed rollers are connected by a first bevel gear and a second bevel gear to form a relative rotational motion.

[0011] More preferably, the outer wall of the scraper roller has several sets of scraping metal parts arranged in an annular pattern, and each metal part is composed of two arc-shaped structures and has an internal cavity. At the same time, the side of the metal part adjacent to the inner wall of the feed inlet is arc-shaped.

[0012] More preferably, the shaft ends at both ends of the outer cylinder are hollow structures and are sleeved on the outside of the shaft ends at both ends of the inner cylinder. The shaft end at one end of the outer cylinder is rotatably connected to the inner wall of the processing box, and the shaft end at the other end of the outer cylinder passes through the processing box and is integrally connected with the shaft at the center of the drive sprocket. At the same time, the magnetic blocks are distributed in a 180° ring on the surface of the inner cylinder, and the first stop block is on the same side as the magnetic blocks.

[0013] More preferably, one side of the first stop and the second stop are both arc-shaped, and the other side is both right-angled. The arc-shaped side of the first stop is spaced a certain distance from the outer cylinder, and the side of the second stop that is in contact with the outer cylinder is shaped like a cross section.

[0014] More preferably, the partition plate is in the shape of an inverted V, and the bottom of the processing box forms two independent feeding slots through the partition plate, and the specifications of the slots are consistent with those of the partition plate. At the same time, the end point of the higher end of the bottom of the feeding port, the axis of the outer cylinder and the center point of the partition plate are located on the same vertical center line.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this invention, the scraper roller, the first unloading roller, and the second unloading roller inside the feed inlet can effectively prevent material blockage. The scraper roller pre-processes the material that has just entered the equipment, reducing the burden on the subsequent unloading roller. The two sets of unloading rollers rotating in opposite directions break up the clumps of raw materials, exposing the encapsulated metal impurities and improving the accuracy of magnetic separation. Even materials containing water can smoothly enter the subsequent processing stage.

[0017] In this invention, the outer cylinder rotates to move the material, while the inner cylinder is fixed and the magnetic blocks on its surface are distributed in a 180° ring to form a stable magnetic field, increasing the adsorption probability of magnetic impurities. Metallic impurities are adsorbed onto the outer cylinder, while non-metallic impurities are thrown outward under the centrifugal force generated by the rotation of the outer cylinder, achieving separation. The partition plate is inverted V-shaped, forming two independent feeding slots. Materials of different properties move along different paths under the action of gravity, improving separation accuracy and product purity. The distribution pattern of the same vertical center line ensures accurate initial position of the material, allowing the material to move more regularly to the corresponding feeding slot. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the processing box of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the feed inlet of this utility model;

[0021] Figure 4 This is a partial structural diagram of the material distribution component of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the material distribution component of this utility model;

[0023] Figure 6 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0024] In the diagram: 1. Processing box; 2. Feed inlet; 3. Scraper roller; 4. Discharge assembly; 401. First discharge roller; 402. Second discharge roller; 403. First bevel gear; 404. Second bevel gear; 5. Distributor assembly; 501. Outer cylinder; 502. Inner cylinder; 503. Magnetic block; 6. Sprocket assembly; 601. Drive sprocket; 602. Driven sprocket; 603. Chain; 7. Spacer plate; 8. First stop block; 9. Second stop block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1 to 6 This utility model provides a technical solution: a magnetic separator with a built-in anti-clogging structure, including a processing box 1, an inlet 2 on the top of the processing box 1, a scraper roller 3 and a material unloading assembly 4 rotatably connected from top to bottom inside the inlet 2, a material distribution assembly 5 rotatably connected between the inner walls of the processing box 1, the material unloading assembly 4 being located above the material distribution assembly 5, a sprocket assembly 6 rotatably connected to the outside of the processing box 1, a partition plate 7 fixedly connected between the inner walls of the processing box 1, the partition plate 7 being located below the material distribution assembly 5, and a first stop block 8 and a second stop block 9 fixedly connected to both ends inside the processing box 1, the first stop block 8 and the second stop block 9 being arranged opposite each other and located above the material distribution assembly 5.

[0027] The feeding assembly 4 consists of a first feeding roller 401 and a second feeding roller 402. The first feeding roller 401 and the second feeding roller 402 are symmetrically distributed and rotatably connected to the inner wall of the feed inlet 2. A first bevel gear 403 is installed at the shaft end of one end of the first feeding roller 401 and the second feeding roller 402. A second bevel gear 404 is vertically distributed at one end of the first bevel gear 403 and meshes with it. The second bevel gears 404 are coaxially connected to each other.

[0028] The material distribution assembly 5 consists of an outer cylinder 501 and an inner cylinder 502. The outer cylinder 501 is sleeved on the outside of the inner cylinder 502. The two ends of the outer wall of the inner cylinder 502 are provided with shaft heads, and the shaft heads pass through the outer cylinder 501 and are fixedly connected to the inner wall of the processing box 1. A magnetic block 503 is fixedly connected to the outer wall of the inner cylinder 502.

[0029] The sprocket assembly 6 consists of a driving sprocket 601 and a driven sprocket 602, which are connected by a chain 603.

[0030] In this embodiment, as Figure 1 and Figure 2 As shown, the feed inlet 2 has a structure that is wider at the top and narrower at the bottom, with the narrower end extending into the interior of the processing box 1. The first unloading roller 401 and the second unloading roller 402 are located inside the narrower end. The bottom of the feed inlet 2 has an inclined opening with one end higher and the other end lower, and the outer cylinder 501 is located below this opening. The first unloading roller 401 and the second unloading roller 402 are located inside the feed inlet 2 at the end of the processing box 1, and they stir and loosen the raw materials that are about to enter the processing below, ensuring that the materials can flow smoothly to the distribution component 5. The position of the outer cylinder 501 matches the inclined opening of the feed inlet 2, which can better adapt to the flow direction of the materials. After the materials fall from the bottom of the feed inlet 2, they can directly enter the outer cylinder 501 for distribution processing.

[0031] In this embodiment, as Figure 3 and Figure 6 As shown, the outer walls of the first and second feed rollers 401 and 402 are respectively spirally arranged with symmetrically distributed spiral blades, and the first and second feed rollers 401 and 402 are connected by a first bevel gear 403 and a second bevel gear 404 to form a relative rotational motion. The outer walls of the first and second feed rollers 401 and 402 can stir and push the material. The rotation of the spiral blades can form a dynamic stirring zone around the material. The opposite rotation direction can generate more complex flow and shear force in the material, which can break up the agglomerated raw materials more quickly. After the agglomerated raw materials are broken up, the metal impurities originally wrapped inside the agglomerated materials are more easily exposed, which further improves the accuracy and effect of magnetic separation. Even materials containing moisture can smoothly enter the subsequent processing stage under the push of the first and second feed rollers 401 and 402, reducing the clogging problem caused by moisture.

[0032] In this embodiment, as Figure 2 and Figure 3As shown, the outer wall of the scraper roller 3 has several sets of scraping metal parts arranged in an interlocking ring. Each metal part consists of two arc-shaped structures and has an internal cavity. The side of the metal part adjacent to the inner wall of the feed inlet 2 is also arc-shaped. The scraper roller 3 is located above the first unloading roller 401 and the second unloading roller 402. It can pre-treat the material in the wider area of ​​the feed inlet 2, reducing the burden on the first unloading roller 401 and the second unloading roller 402. The wider area of ​​the feed inlet 2 is the initial position of the material entering the equipment and is also a place where material accumulation and adhesion are likely to occur. The scraper roller 3 rotates in this area to process the material that has just entered the equipment in time, preventing the accumulation of problems. The arc-shaped metal parts can better fit the shape of the inner wall of the feed inlet 2, improving the scraping effect. On the other hand, because a certain amount of airflow or pressure change may occur during the scraping process, its cavity structure helps to quickly remove the scraped material and prevent the material from adhering again.

[0033] In this embodiment, as Figure 5 As shown, the shaft ends at both ends of the outer wall of the outer cylinder 501 are hollow structures and are sleeved on the outside of the shaft ends at both ends of the inner cylinder 502. The shaft end at one end of the outer cylinder 501 is rotatably connected to the inner wall of the processing box 1, and the shaft end at the other end of the outer cylinder 501 passes through the processing box 1 and is integrally connected to the shaft at the center of the drive sprocket 601. At the same time, the magnetic blocks 503 are distributed in a 180° ring on the surface of the inner cylinder 502, and the first stop block 8 is on the same side as the magnetic blocks 503. The outer cylinder 501 rotates while the inner cylinder 502 remains stationary. The special design of the shaft ends at both ends ensures that there will be no motion interference between the two when they move relative to each other. The fixed structure of the inner cylinder 502 can ensure the relative fixation of the position of the magnetic blocks 503, thereby forming a more stable magnetic field. Furthermore, the angle of the distribution of the magnetic blocks 503 allows them to cover a larger area, thereby increasing the probability of adsorption of magnetic impurities. This means that there is a greater chance to capture magnetic impurities and ensure that as many impurities as possible are separated.

[0034] In this embodiment, as Figure 2 and Figure 4As shown, one side of the first stop 8 and the second stop 9 are both arc-shaped, and the other side is a right angle. The arc-shaped side of the first stop 8 is spaced a certain distance from the outer cylinder 501, and the side of the second stop 9 that is in contact with the outer cylinder 501 is shaped like a cross section. Since the outer cylinder 501 is fitted onto the outside of the inner cylinder 502, and there is a small gap between their inner and outer walls, when the outer cylinder 501 rotates, a magnetic field is generated on its surface relative to the position of the magnetic block 503. Under the action of the magnetic field, metallic impurities are adsorbed onto the outer cylinder 501, achieving the initial separation of metallic and non-metallic impurities. Non-metallic materials are thrown outward due to the centrifugal force generated by the rotation of the outer cylinder 501. The first baffle 8 can prevent raw materials from splashing to the top corners of the processing box 1. Its arc-shaped design can better adapt to the movement trajectory of the raw materials, reducing material rebound and splashing. At the same time, when the metal material rotates through the outer cylinder 501 to an area without a magnetic field, it will fall due to gravity. In order to avoid some small metals not being completely separated in time, the presence of the second baffle 9 can further assist in separating these small metals after the metal material rotates to its area. Its special cross-sectional shape can fit tightly with the outer cylinder 501. When the small metals move to this place with the outer cylinder 501, the second baffle 9 can promote the removal of residual metal impurities as much as possible through physical blocking and guiding.

[0035] In this embodiment, as Figure 2 As shown, the partition plate 7 is inverted V-shaped, and the bottom of the processing box 1 forms two independent feeding slots through the partition plate 7. The specifications of the slots are consistent with those of the partition plate 7. At the same time, the higher end of the bottom of the inlet 2, the axis of the outer cylinder 501, and the center point of the partition plate 7 are located on the same vertical center line. Through the two independent feeding slots formed by the partition plate 7, different materials after separation can be collected separately. The distribution pattern of the same vertical center line ensures the accuracy of the initial position of the materials after entering the equipment, so that materials of different properties can move more regularly along different paths in the subsequent processing, which helps to improve the separation accuracy and ensures that metal impurities and non-metal impurities can be separated as thoroughly as possible, thereby improving the purity of the product.

[0036] The method of use and advantages of this utility model: The magnetic separator with a built-in anti-clogging structure operates as follows:

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the mixed raw materials are first introduced into the feed inlet 2, or an external conveying device is used to feed the raw materials into the feed inlet 2. When the raw materials enter the feed inlet 2, the scraper roller 3 is driven by a servo motor to rotate and pre-process the material in the feed inlet 2. During its rotation, the metal parts distributed in annular patterns on the outer wall scrape off any material that may stick to the inner wall of the feed inlet 2, preventing material accumulation. The material enters the narrower end of the feed inlet 2 in an orderly manner through the continuously rotating scraper roller 3, reaching the positions of the first unloading roller 401 and the second unloading roller 402. The second bevel gear 404 rotates simultaneously under the drive of the servo motor. The movement of the rollers causes the two sets of first bevel gears 403 to rotate, which in turn causes the first unloading rollers 401 and 402 to rotate relative to each other. The spiral blades on their outer walls stir and loosen the material, breaking up any clumps. The material containing moisture is then smoothly pushed into the subsequent processing stage by the first and second unloading rollers 401 and 402, reducing clogging caused by moisture. At the same time, after the clumps are broken up, any metal impurities trapped inside are more easily exposed. The material processed by the first and second unloading rollers 401 and 402 falls directly from the inclined opening at the bottom of the feed inlet 2. On the surface of the cylinder 501, the driving sprocket 601, driven by a servo motor, rotates the driven sprocket 602 via a chain 603, causing the outer cylinder 501 to rotate. Since the magnetic blocks 503 fixedly connected to the surface of the inner cylinder 502 are arranged in a 180° ring, a stable magnetic field is formed. Metal impurities are adsorbed onto the outer cylinder 501 under the influence of this magnetic field. Therefore, when the outer cylinder 501 rotates, the metal material is unaffected by its movement and moves along the circumference of the outer cylinder 501. However, non-metallic impurities are thrown outwards by the centrifugal force generated by the rotation of the outer cylinder 501 and are ejected from the cavity between the partition plate 7 and the first stop block 8. Under the influence of gravity, the metal material falls into the external collection container through the slot corresponding to one side of the partition plate 7. As the outer cylinder 501 rotates away from the magnetic block 503 area, the metal material loses the magnetic attraction force and flies outward from the surface of the outer cylinder 501 under the action of gravity and the centrifugal force brought by the rotation of the outer cylinder 501. It then falls into the external collection container through the slot corresponding to the other end of the partition plate 7. The processing box 1 is equipped with a door panel. After the equipment has been running for a period of time, the inside of the processing box 1 can be thoroughly rinsed by opening the door panel and using a high-pressure water gun or other cleaning equipment.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetic separator with a built-in anti-clogging structure, including a processing box (1), characterized in that: The top of the processing box (1) is provided with a feed inlet (2). Inside the feed inlet (2), a scraper roller (3) and a material unloading assembly (4) are rotatably connected from top to bottom. A material distribution assembly (5) is rotatably connected between the inner walls of the processing box (1). The material unloading assembly (4) is located above the material distribution assembly (5). A sprocket assembly (6) is rotatably connected to the outside of the processing box (1). A partition plate (7) is fixedly connected between the inner walls of the processing box (1). The partition plate (7) is located below the material distribution assembly (5). A first stop block (8) and a second stop block (9) are fixedly connected to both ends inside the processing box (1). The first stop block (8) and the second stop block (9) are arranged opposite each other and are located above the material distribution assembly (5). The feeding assembly (4) consists of a first feeding roller (401) and a second feeding roller (402). The first feeding roller (401) and the second feeding roller (402) are symmetrically distributed and rotatably connected to the inner wall of the feed inlet (2). A first bevel gear (403) is installed at the shaft end of one end of the first feeding roller (401) and the second feeding roller (402). A second bevel gear (404) is vertically distributed at one end of the first bevel gear (403) and meshes with it. The second bevel gears (404) are coaxially connected to each other. The material distribution assembly (5) consists of an outer cylinder (501) and an inner cylinder (502). The outer cylinder (501) is sleeved on the outside of the inner cylinder (502). The inner cylinder (502) has shaft heads at both ends on its outer wall, and the shaft heads pass through the outer cylinder (501) and are fixedly connected to the inner wall of the processing box (1). A magnetic block (503) is fixedly connected to the outer wall of the inner cylinder (502). The sprocket assembly (6) consists of a driving sprocket (601) and a driven sprocket (602), which are connected by a chain (603).

2. The magnetic separator with a built-in anti-clogging structure according to claim 1, characterized in that: The feed inlet (2) has a structure that is wider at the top and narrower at the bottom, and the narrower end of its bottom extends into the interior of the processing box (1). The first unloading roller (401) and the second unloading roller (402) are located inside the narrower end. At the same time, the bottom of the feed inlet (2) has an inclined opening with one end higher and the other end lower, and the outer cylinder (501) is located below the opening.

3. The magnetic separator with a built-in anti-clogging structure according to claim 1, characterized in that: The outer walls of the first feed roller (401) and the second feed roller (402) are respectively spirally arranged with relatively symmetrically distributed spiral blades, and the first feed roller (401) and the second feed roller (402) are in relative rotational motion through the first bevel gear (403) and the second bevel gear (404).

4. The magnetic separator with a built-in anti-clogging structure according to claim 1, characterized in that: The outer wall of the scraper roller (3) is provided with several sets of scraping metal parts arranged in an interlocking ring. Each metal part consists of two arc-shaped structures and has an internal cavity. The side of the metal part adjacent to the inner wall of the feed inlet (2) is arc-shaped.

5. The magnetic separator with a built-in anti-clogging structure according to claim 1, characterized in that: The shaft ends at both ends of the outer wall of the outer cylinder (501) are hollow structures and are sleeved on the outside of the shaft ends at both ends of the inner cylinder (502). The shaft end at one end of the outer cylinder (501) is rotatably connected to the inner wall of the processing box (1), and the shaft end at the other end of the outer cylinder (501) passes through the processing box (1) and is integrally connected with the shaft at the center of the drive sprocket (601). At the same time, the magnetic blocks (503) are distributed in a 180° ring on the surface of the inner cylinder (502), and the first stop block (8) is on the same side as the magnetic blocks (503).

6. The magnetic separator with a built-in anti-clogging structure according to claim 1, characterized in that: One side of the first block (8) and the second block (9) are both arc-shaped, and the other side is a right angle. The arc-shaped side of the first block (8) is spaced a certain distance from the outer cylinder (501), and the side of the second block (9) that is in contact with the outer cylinder (501) is a cross-shaped surface.

7. The magnetic separator with a built-in anti-clogging structure according to claim 1, characterized in that: The partition plate (7) is in the shape of an inverted V, and the bottom of the processing box (1) forms two independent feeding slots through the partition plate (7), and the slot specifications are consistent with the partition plate (7). At the same time, the end point of the higher end of the bottom of the feed port (2), the axis point of the outer cylinder (501) and the center point of the partition plate (7) are located on the same vertical center line.

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