Dry magnetic separator with high-efficiency unloading structure

Abstract

The utility model discloses a dry -type magnetic separator with high -efficient unloading mine structure, including the machine case, the machine case top is equipped with the feed port, the even rotation of magnetic force roller is connected with in the machine case bottom of feed port, the even installation of spiral blade has in the machine case bottom of magnetic force roller, spiral blade bottom is equipped with drive mechanism, the one end of machine case is connected with the discharge chute, the inside rotation of discharge chute and machine case junction is connected with the unloading cylinder, a plurality of magnetic force roller and unloading cylinder are in line and set up, the unloading cylinder inside is provided with the magnetic block, the same drive mechanism is installed to unloading cylinder and magnetic force roller one end, the discharge chute inside is fixed with the scraper in unloading cylinder one side, and the scraper end portion is pasted and contacts the unloading cylinder surface, and through the dynamic function of spiral blade's turning over, the problem that material and magnetic force element contact is not sufficient in traditional equipment is solved, and the adsorption probability of magnetic particle in material is ensured to improve 30% or above.

Description

Technical Field

[0001] This utility model belongs to the technical field of dry magnetic separators, specifically relating to a dry magnetic separator with a high-efficiency ore unloading structure. Background Technology

[0002] Dry magnetic separators are important sorting equipment widely used in mining, metallurgy, and building materials industries. They are mainly used to separate magnetic substances from dry materials. Compared with traditional wet magnetic separation, they have advantages such as not requiring water and having a simple process, making them particularly suitable for arid and water-scarce areas or situations where the moisture content of the product is strictly controlled.

[0003] However, existing dry magnetic separators still have several significant drawbacks. First, the recovery rate of magnetic materials is relatively low, and a significant amount of useful magnetic components remain in the tailings after a single separation. To achieve ideal recovery results, multiple magnetic separations are often required. This not only leads to low separation efficiency but also necessitates manual re-feeding of the separated material into the equipment, increasing the labor intensity and working time for operators. Second, during the separation process, especially when processing fine powder materials, existing equipment is prone to dust escape due to insufficient sealing or a lack of effective dust control measures. This causes environmental pollution, harms the health of operators, and may result in the loss of useful materials. Furthermore, the integration and compactness of existing equipment are not high. The layout of functional modules such as the magnetic system, feeding, transmission, and separation is loose, and the overall structure is not optimized, resulting in a large footprint and increased plant construction and operating costs.

[0004] Therefore, there is an urgent need for a new type of dry magnetic separator to solve the problems of low recovery rate of magnetic materials, serious dust pollution, low equipment integration and large footprint, so as to achieve efficient, environmentally friendly and intensive dry magnetic separation operation. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dry magnetic separator with a high-efficiency ore unloading structure, comprising a casing, a feed inlet at the top of the casing, magnetic rollers uniformly rotatably connected to the bottom of the feed inlet inside the casing, spiral blades uniformly installed at the bottom of the magnetic rollers inside the casing, a drive mechanism installed at the bottom of the spiral blades, a discharge chute connected to one end of the casing, a discharge drum rotatably connected inside the connection between the discharge chute and the casing, multiple magnetic rollers and discharge drums arranged coaxially, a magnetic block disposed inside the discharge drum, a drive mechanism also installed at one end of the discharge drum and the magnetic rollers, and a scraper fixed inside the discharge chute on one side of the discharge drum, the end of the scraper abutting and contacting the surface of the discharge drum.

[0006] As a preferred embodiment of this utility model, the magnetic force of the magnetic roller gradually decreases from one end of the discharge chute to the other end, and the magnetic force of the magnetic block inside the discharge roller is greater than the magnetic force of the magnetic roller near the end of the discharge chute.

[0007] As a preferred embodiment of this utility model, the discharge chute is inclined, and the highest point of the inclined discharge chute is connected to the machine casing by welding.

[0008] As a preferred technical solution of this utility model, the bottom end face of the chassis is inclined, and the lowest point of the bottom end face is provided with a ore unloading port.

[0009] As a preferred technical solution of this utility model, the driving mechanism includes a drive motor, and pulleys are fixed at the output end of the drive motor, the bottom shaft of the spiral blade central shaft, the magnetic roller and one end of the unloading drum. Adjacent pulleys are connected by belt drive.

[0010] As a preferred technical solution of this utility model, the magnetic block has a fan-shaped structure, and a fixed shaft is fixed at the center of the fan. The two ends of the fixed shaft pass through the unloading roller and the machine box respectively, and the unloading roller and the fixed shaft are rotatably connected. The two ends of the fixed shaft are fixed to the side wall of the machine box.

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

[0012] (1) This utility model solves the problem of insufficient contact between materials and magnetic elements in traditional equipment by using the dynamic flipping function of the spiral blades, ensuring that the adsorption probability of magnetic particles in the material is increased by more than 30%; the gradient magnetic distribution of the magnetic roller realizes the "gradual migration + impurity stripping" of magnetic particles, reducing the entrainment rate of magnetic particles and non-magnetic impurities, and improving the sorting purity.

[0013] (2) The strong magnetic design of the unloading drum ensures that there is no loss or transfer of magnetic particles. Combined with the thorough scraping of the scraper, it avoids the residue of magnetic particles in the unloading process, improves the recovery rate of magnetic materials in a single magnetic separation, greatly reduces the operation process of repeated magnetic separation required by traditional equipment, thereby reducing the labor intensity of operators to repeatedly feed materials and shortening the operation time cost.

[0014] (3) The core sorting components of the equipment are all integrated inside the chassis and are only connected to the outside through the feed port, discharge chute and unloading port. The entire process of material feeding, sorting, unloading and tailings discharge is completed in a relatively closed space, which can effectively suppress the dust escape phenomenon of fine powder materials during the sorting process, protect the occupational health of operators, avoid the loss of useful magnetic materials due to dust loss, and reduce the material waste cost of enterprises. At the same time, the inclined bottom of the chassis and the turning of the spiral blades can avoid tailings blockage and achieve efficient unloading.

[0015] (4) This utility model integrates five core functional modules, namely "feed inlet, sorting module, transmission module, unloading module and tailings discharge structure", into a single chassis. The module layout is compact, with no loose external parts, reducing the overall footprint. At the same time, the integrated structure simplifies the installation, debugging and maintenance of the equipment. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model;

[0019] In the diagram: 1. Chassis; 2. Feed inlet; 3. Magnetic roller; 4. Spiral blade; 5. Discharge chute; 6. Discharge drum; 7. Magnetic block; 8. Discharge port; 9. Drive motor; 10. Pulley; 11. Fixed shaft; 12. Scraper. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figure 1-2 The present invention provides the following technical solution: a dry magnetic separator with a high-efficiency ore unloading structure, comprising a casing 1, a feed inlet 2 at the top of the casing 1, a magnetic roller 3 uniformly rotatably connected to the bottom of the feed inlet 2 inside the casing 1, spiral blades 4 uniformly installed at the bottom of the magnetic rollers 3 inside the casing 1, a drive mechanism installed at the bottom of the spiral blades 4, a discharge chute 5 connected to one end of the casing 1, a discharge roller 6 rotatably connected inside the connection between the discharge chute 5 and the casing 1, multiple magnetic rollers 3 and discharge roller 6 being arranged colinearly, a magnetic block 7 being provided inside the discharge roller 6, a drive mechanism being installed at one end of the discharge roller 6 and the magnetic rollers 3, and a scraper 12 fixed inside the discharge chute 5 on one side of the discharge roller 6, the end of the scraper 12 being attached to and in contact with the surface of the discharge roller 6.

[0023] In order to achieve the directional migration of magnetic particles on the magnetic roller 3 and gradually remove non-magnetic impurities during the migration process, and avoid the loss of magnetic particles in the transfer process, in this embodiment, as a preferred technical solution of the present invention, the magnetic force of the magnetic roller 3 gradually decreases from one end of the discharge chute 5 to the other end, and the magnetic force of the magnetic block 7 inside the discharge roller 6 is greater than the magnetic force of the magnetic roller 3 near the end of the discharge chute 5.

[0024] In order to enable the magnetic products stripped by the scraper 12 to slide naturally out along the discharge chute 5 by gravity and achieve efficient collection of magnetic products, in this embodiment, as a preferred technical solution of the present invention, the discharge chute 5 is inclined, and the highest point of the discharge chute 5 is connected to the casing 1 by welding.

[0025] In order to enable the non-magnetic tailings (including non-magnetic impurities and unadsorbed non-magnetic materials) separated during the sorting process to be discharged in a concentrated, efficient and smooth manner under the action of gravity after the sorting is completed, in this embodiment, as a preferred technical solution of the present invention, the bottom end face of the casing 1 is inclined, and the lowest point of the bottom end face is provided with a discharge port 8.

[0026] In order to achieve synchronous operation of the spiral blade 4, magnetic roller 3 and unloading drum 6 by driving with a single power source, simplify the transmission structure, reduce the probability of equipment failure and improve the overall operation stability, in this embodiment, as a preferred technical solution of the present invention, the driving mechanism includes a drive motor 9. The output end of the drive motor 9, the bottom shaft of the central shaft of the spiral blade 4, the magnetic roller 3 and the unloading drum 6 are all fixed with pulleys 10, and adjacent pulleys 10 are connected by belt drive.

[0027] In order to achieve the fixed installation of the magnetic block 7 inside the unloading drum 6, ensure that the position of the magnetic block 7 does not shift with the rotation of the unloading drum 6, and ensure the continuous and reliable adsorption and transfer process of magnetic particles on the drum surface, in this embodiment, as a preferred technical solution of the present invention, the magnetic block 7 has a fan-shaped structure, and a fixed shaft 11 is fixed at the center of the fan shape. The two ends of the fixed shaft 11 pass through the unloading drum 6 and the housing 1 respectively, and the unloading drum 6 and the fixed shaft 11 are rotatably connected. The two ends of the fixed shaft 11 are fixed to the side wall of the housing 1.

[0028] In summary, based on the above-mentioned technical solution of this utility model, the specific workflow is as follows:

[0029] Material pretreatment and initial layout: First, the material to be sorted after crushing and pretreatment is fed into the equipment at a constant speed through the feed port 2 at the top of the machine box 1; under the action of gravity, the material naturally passes through the gap between the multiple sets of magnetic rollers 3 located at the bottom of the feed port 2 inside the machine box 1, and finally falls to the bottom area of ​​the machine box 1; feeding continues until the material in the machine box 1 accumulates to the preset height (i.e. the top surface of the material is close to the surface of the magnetic roller 3), completing the initial layout of the material before sorting.

[0030] Drive system linkage: Start the two drive mechanisms of the equipment. The drive motor 9 in the drive mechanism at the bottom of the spiral blade 4 outputs power. Through the pulley 10 fixed at its output end, and in conjunction with the belt transmission between adjacent pulleys 10, it synchronously drives the spiral blade 4 at the bottom of the machine box 1 to rotate. The drive mechanism at the end of the magnetic roller 3 drives multiple sets of magnetic rollers 3 and the unloading roller 6 to rotate around its own axis.

[0031] Dynamic material tumbling and magnetic initial sorting: During equipment operation, the rotation of the spiral blades 4 plays a core disturbance role. The blade structure continuously tumbles and stirs the material at the bottom of the casing 1, constantly updating the "top layer" of material in contact with the magnetic roller 3. This avoids the problem of magnetic particles being missed due to localized material not being able to contact the magnetic roller 3, as seen in traditional equipment, ensuring that the magnetic particles in the material can fully contact the surface of the rotating magnetic roller 3 above. Simultaneously, the magnetic roller 3 adopts a "gradient magnetic force distribution" design, with its magnetic force gradually increasing from the end furthest from the discharge chute 5 to the end closer to the discharge chute 5.

[0032] When the surface of the magnetic roller 3 comes into contact with the material, its surface magnetic field attracts magnetic particles in the material. As the magnetic roller 3 rotates, the magnetic particles attracted to its surface will migrate step by step along the axis of the magnetic roller 3 towards the discharge chute 5 where the magnetic force is stronger, under the action of the "gradient magnetic force difference". During this migration process, non-magnetic impurities (which are not attracted by magnetic force) that are trapped between the magnetic particles will detach from the magnetic particle group under the dual action of gravity and fall back into the material pile at the bottom of the machine box 1, completing the initial separation and purification of magnetic materials and non-magnetic impurities.

[0033] Strong magnetic transfer and mechanical scraping unloading: When magnetic particles migrate axially along the magnetic roller 3 to the end near the discharge chute 5, the magnetic strength of the magnetic block 7 (fan-shaped structure, fixed inside the housing 1 by a fixed shaft 11, with only the discharge roller 6 rotating around the fixed shaft 11) inside the discharge roller 6 is greater than that of the magnetic roller 3 at that end. The magnetic particles are then "transferred" to the surface of the discharge roller 6 by the strong magnetic attraction of the discharge roller 6, achieving precise transfer of magnetic particles from the magnetic roller 3 to the discharge roller 6 and preventing loss of magnetic particles due to insufficient magnetic force during the transfer process. As the discharge roller 6 continues to rotate, the magnetic particles adsorbed on its surface are transported to the preset scraper 12 position inside the discharge chute 5 (the end of the scraper 12 is tightly fitted to the surface of the discharge roller 6 without gaps).

[0034] When the magnetic particles rotate with the unloading drum 6 and come into contact with the scraper 12, the scraper 12 will mechanically scrape the surface of the unloading drum 6, completely peeling the magnetic particles off the drum surface. After peeling, the magnetic particles slide out of the equipment under the action of gravity along the inclined surface of the discharge chute 5 because the discharge chute 5 is "tilted". This completes the final collection of the magnetic products.

[0035] The bottom end face of the tailings discharge unit 1 adopts an "inclined design", and the lowest point of its bottom end face is provided with a discharge port 8. During the entire separation process, non-magnetic impurities that are separated from the magnetic particle group and non-magnetic materials that are not magnetically attracted (i.e., "tailings") will slide naturally along the inclined end face of the bottom of the unit 1 to the lowest point of the discharge port 8 under the action of gravity, and finally be discharged from the equipment from the discharge port 8, so as to achieve complete separation of magnetic products and tailings and complete a single dry magnetic separation process.

[0036] Finally, it should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dry magnetic separator with high efficiency discharge structure, comprising a machine box (1), characterized in that: The top of the casing (1) is provided with a feed inlet (2). Magnetic rollers (3) are uniformly rotatably connected to the bottom of the feed inlet (2) inside the casing (1). Spiral blades (4) are uniformly installed at the bottom of the magnetic rollers (3) inside the casing (1). A drive mechanism is installed at the bottom of the spiral blades (4). A discharge chute (5) is connected to one end of the casing (1). A discharge roller (6) is rotatably connected inside the connection between the discharge chute (5) and the casing (1). Multiple magnetic rollers (3) and discharge rollers (6) are arranged in a collinear manner. A magnetic block (7) is provided inside the discharge roller (6). A drive mechanism is also installed at one end of the discharge roller (6) and the magnetic rollers (3). A scraper (12) is fixed inside the discharge chute (5) on one side of the discharge roller (6). The end of the scraper (12) is attached to and in contact with the surface of the discharge roller (6).

2. A dry magnetic separator with high efficiency discharge structure according to claim 1, characterized in that: The magnetic force of the magnetic roller (3) gradually decreases from one end of the discharge chute (5) to the other end, and the magnetic force of the magnetic block (7) inside the discharge roller (6) is greater than the magnetic force of the magnetic roller (3) near the end of the discharge chute (5).

3. A dry magnetic separator with high efficiency discharge structure as claimed in claim 1, wherein: The discharge chute (5) is inclined, and the highest point of the discharge chute (5) is connected to the machine box (1) by welding.

4. A dry magnetic separator with a high-efficiency ore unloading structure according to claim 1, characterized in that: The bottom end face of the chassis (1) is inclined, and the lowest point of the bottom end face is provided with a ore unloading port (8).

5. A dry magnetic separator with a high-efficiency ore unloading structure according to claim 1, characterized in that: The driving mechanism includes a drive motor (9), and pulleys (10) are fixed at the output end of the drive motor (9), the bottom shaft of the central shaft of the spiral blade (4), the magnetic roller (3) and the unloading roller (6). Adjacent pulleys (10) are connected by belt drive.

6. A dry magnetic separator with high efficiency discharge structure as claimed in claim 1 wherein: The magnetic block (7) has a fan-shaped structure, and a fixed shaft (11) is fixed at the center of the fan. The shafts of the fixed shaft (11) pass through the unloading drum (6) and the machine box (1) respectively. The unloading drum (6) and the shaft of the fixed shaft (11) are rotatably connected. The two ends of the fixed shaft (11) are fixed to the side wall of the machine box (1).

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