Spiral chute with magnetic separation function

Abstract

The utility model discloses a spiral chute with magnetic separation function belongs to the field of mineral processing. The utility model relates to a spiral chute with magnetic separation function, including both side with the guide vane of restriction strip, the transverse setting of two restriction strips has the connecting plate, the lower extreme of connecting plate is provided with main magnet, the upper extreme of connecting plate is provided with the arm of holding. The utility model solves the problem that the existing spiral chute for mineral processing is moved to the outermost circle of spiral chute and is discharged in the process of using, because the surface area of small particle magnetic mineral particle is small, and the influence of water force is greater than gravity, leading to small particle magnetic mineral particle, the main magnet with the arc of the utility model can move small particle magnetic mineral particle from the outermost circle to the innermost circle by magnetic force when metal flows along the guide vane, and the auxiliary magnet of time energization and the generation of magnetic force can carry out the capture and release of metal material, can collect small particle magnetic mineral particle, avoid small particle magnetic mineral particle from the outermost circle and discharge.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing, specifically a spiral chute with magnetic separation function. Background Technology

[0002] The spiral sluice is a gravity separation device that combines the features of spiral concentrators, shaking tables, and centrifugal concentrators. Its main body is constructed of fiberglass spiral blades connected by bolts, with an inner surface coated with a wear-resistant lining such as polyurethane or epoxy resin. Utilizing differences in mineral specific gravity, particle size, and shape, the device separates minerals into layers based on density and radial bands within the spiral sluice through the combined effects of gravity, centrifugal force, friction, and water pressure. This achieves natural separation of concentrate, middlings, and tailings. The equipment is compact, stable in operation, and has low energy consumption. It requires no flushing water and is suitable for separating non-ferrous metals such as iron, titanium, tungsten, and tin, as well as rare metals and non-metallic minerals, with particularly significant effects on fine-grained materials.

[0003] Chinese patent CN210787720U discloses a spiral chute for mineral processing, including a fixed cylinder, spiral blades fixed to the outside of the fixed cylinder, side guard plates fixed to the outside of the spiral blades, and a mounting base. This application employs a modular assembly structure, with multiple sets of fixed cylinders, each set equipped with spiral blades and side guard plates. When assembling the spiral chute, multiple sets of fixed cylinders are sequentially slid into limiting grooves outside a specified length of assembly cylinder via limiting blocks. After the fixed cylinder and assembly cylinder are installed, the assembly cover plate is screwed into the top of the assembly cylinder using an external screw, thus completing the assembly and processing of the spiral chute. This structure facilitates segmented processing of the spiral chute, improving processing efficiency, and allows for the assembly and processing of spiral chutes of different lengths, enhancing the versatility of the spiral chute.

[0004] When the aforementioned patented mineral processing spiral chute is used to screen small magnetic mineral particles, the small magnetic mineral particles have a small surface area and are more affected by the force of water than by gravity. As they are transported and screened along the spiral chute, the small magnetic mineral particles tend to move to the outermost ring of the spiral chute and be discharged, instead of being discharged through the innermost ring for unified collection, which affects the mineral sorting effect. Utility Model Content

[0005] The purpose of this invention is to provide a spiral chute with magnetic separation function. The main magnet with an arc can push small magnetic mineral particles from the outermost ring to the innermost ring by magnetic force when the metal flows along the guide plate. The auxiliary magnet, which is energized at regular intervals and generates magnetic force, can grasp and release metal materials, collect small magnetic mineral particles, and prevent small magnetic mineral particles from being discharged from the outermost ring, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a spiral chute with magnetic separation function, comprising a guide plate with limiting strips on both sides, a connecting plate arranged laterally between the two limiting strips, a main magnet at the lower end of the connecting plate, a gripping arm at the upper end of the connecting plate, a pair of first threaded rods welded between the gripping arm and the main magnet, a first adjusting block with threaded engagement provided outside the first threaded rods, a second threaded rod with threaded engagement passing through one end of the connecting plate near the innermost ring of the guide plate, a secondary magnet welded to the lower end of the second threaded rod, the secondary magnet being an electromagnet, the movable, curved main magnet and secondary magnet being able to approach the detection position, facilitating the guidance of small magnetic mineral particles.

[0007] Preferably, connecting frames are welded to both sides of the connecting plate, and the lower end of the connecting frame is connected to the upper end of the limiting strip through a slot, so that the connecting plate can be mounted on the upper end of the guide plate through the connecting frame.

[0008] Preferably, the main magnet extends from the outermost to the innermost position of the guide plate. The bending and extension of the main magnet facilitates the flow of small magnetic mineral particles.

[0009] Preferably, guide posts are provided on both sides of the second threaded rod and welded and fixed to the auxiliary magnet. The guide posts slide through the upper and lower ends of the connecting plate. A second adjusting block with threaded engagement is provided on the outside of the second threaded rod. After the guide posts restrict the second threaded rod, the horizontal position of the auxiliary magnet can be adjusted longitudinally to adapt to different screening requirements and different water flow intensities.

[0010] Preferably, a handle is welded to the upper end of the second threaded rod, which makes it easy for the user to hold and can also restrict the second threaded rod to prevent the secondary magnet from falling off.

[0011] Preferably, the auxiliary magnet is wrapped with a plastic film, which can wrap and protect the auxiliary magnet, and does not hinder the magnetic attraction.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] When this invention is used for mineral processing, the curved connecting plate can be easily mounted horizontally on the upper part of the guide plate. First, the connecting plate can be mounted on the limiting strip position via the connecting frame. Second, the first adjusting block can be rotated outside the first threaded rod to adjust the height of the main magnet vertically, making it easier for the main magnet to approach the flowing liquid. Third, rotating the handle alone can move the auxiliary magnet vertically downward and directly embed it into the flowing liquid. The curved main magnet can push small magnetic mineral particles from the outermost ring to the innermost ring through magnetic force when the metal flows along the guide plate. The auxiliary magnet, which is energized at regular intervals and generates magnetic force, can grasp and release metal materials, collect small magnetic mineral particles, and prevent small magnetic mineral particles from being discharged from the outermost ring. Attached Figure Description

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

[0015] Figure 2 This is a schematic diagram of the second threaded rod transmission structure of this utility model;

[0016] Figure 3 This is a cross-sectional view of the first threaded rod transmission structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the magnetic attraction trajectory of the spiral chute of this utility model.

[0018] In the diagram: 1. Deflector plate; 2. Restriction strip; 3. Connecting frame; 4. Connecting plate; 5. First threaded rod; 6. First adjusting block; 7. Grip arm; 8. Main magnet; 9. Handle; 10. Second adjusting block; 11. Second threaded rod; 12. Secondary magnet; 13. Guide post. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] like Figure 1 As shown, a spiral chute with magnetic separation function in this embodiment includes a guide plate 1. Both sides of the guide plate 1 are provided with limiting strips 2, and the limiting strips 2 and the guide plate 1 are an integral structure. When the liquid carries the minerals to flow from top to bottom along the guide plate 1, the liquid and minerals will be restricted by the limiting strips 2.

[0021] In order to adsorb and collect small magnetic mineral particles, a connecting plate 4 is arranged horizontally between the two limiting strips 2. Five connecting plates 4 are evenly distributed vertically. A connecting frame 3 is provided on both sides of the connecting plate 4, and the connecting frame 3 is welded and fixed to the connecting plate 4. The lower end of the connecting frame 3 is connected to the upper end of the limiting strip 2 through a slot. The connecting plate 4 and the main magnet 8 at the lower end can be supported through the connecting frame 3.

[0022] Furthermore, such as Figure 2 , Figure 3 and Figure 4 As shown, a main magnet 8 is provided at the lower end of the connecting plate 4, and a gripping arm 7 is provided at the upper end of the connecting plate 4. A pair of first threaded rods 5 are provided between the gripping arm 7 and the main magnet 8. The two ends of the first threaded rods 5 are welded and fixed to the gripping arm 7 and the main magnet 8, respectively. A first adjusting block 6 is provided between the connecting plate 4 and the gripping arm 7. The first threaded rods 5 pass through and extend to the upper and lower ends of the first adjusting block 6, and the outer surface of the first threaded rods 5 is engaged with the inner thread of the first adjusting block 6. The horizontal position of the main magnet 8 can be adjusted longitudinally by rotating the first adjusting block 6.

[0023] To facilitate the direct adsorption of metal particles in flowing liquid, the main magnet 8 extends from the outermost to the innermost position of the guide plate 1. A second threaded rod 11 is vertically inserted through one end of the connecting plate 4 near the innermost position of the guide plate 1. Guide posts 13 are provided on both sides of the second threaded rod 11. The outer part of the second threaded rod 11 is threadedly engaged with the through position of the connecting plate 4. The guide posts 13 slide through the upper and lower ends of the connecting plate 4. A secondary magnet 12 is provided at the lower end of the second threaded rod 11, and the upper end of the secondary magnet 12 is welded and fixed to the lower end of the second threaded rod 11. The guide posts 13 are welded and fixed to the secondary magnet 12. A second adjusting block 10 is provided on the outer side of the second threaded rod 11, and the inner part of the second adjusting block 10 is threadedly engaged with the outer part of the second threaded rod 11. After being restricted by the guide posts 13, the second adjusting block 10 can horizontally adjust the height of the secondary magnet 12 after rotating and generating relative movement with the second threaded rod 11, so that the secondary magnet 12 can be directly embedded in the flowing water.

[0024] To facilitate gripping and twisting of the second adjusting block 10, a handle 9 is provided at the upper end of the second threaded rod 11, and the handle 9 is welded and fixed to the second threaded rod 11. When twisting the second adjusting block 10, the hand needs to hold the handle 9, and the handle 9 can also prevent the second adjusting block 10 from falling off.

[0025] To prevent the flow of liquid from affecting the use of the auxiliary magnet 12, the auxiliary magnet 12 is wrapped with a plastic film. The plastic film can prevent the flowing liquid from colliding with the auxiliary magnet 12 without hindering the magnetic attraction. The auxiliary magnet 12 is an electromagnet. The electromagnet is switched on and off at a timed interval. The controller sends commands in a cycle according to a preset rhythm to drive a high-power switch to accurately connect or disconnect the power supply to the electromagnet, so that it periodically generates a strong magnetic force to attract the target material. After the power is cut off, the magnetic force disappears instantly to release the material. The reverse high voltage generated when the power is cut off is absorbed by the protection element to ensure stable and automatic repetition of the attraction and release actions. This repeated start-up action of the electromagnet is a conventional timing method. Therefore, the components used to drive the electromagnet are not described in detail in this application.

[0026] Working principle: When using the device to sort minerals, the liquid carries the minerals down from the top of the guide plate 1. Relying on the gravity of the slurry itself, and constrained by the limiting strip 2 within the guide plate 1, the combined action of centrifugal force, friction, water flow dynamics, and the gravity of the minerals themselves achieves the separation of minerals with different densities, particle sizes, and shapes. During separation, rotating the first adjusting block 6 outside the first threaded rod 5, supported by the connecting plate 4, horizontally adjusts the distance between the main magnet 8 and the guide plate 1, adapting to the amount of liquid flow. This allows the main magnet 8 to approach the flowing liquid but not contact it. Furthermore, under the constraint of the guide column 13, rotating the second adjusting block 10 independently horizontally adjusts the height of the auxiliary magnet 12, embedding it into the flowing liquid. The auxiliary magnet 12 is an electromagnet, which is periodically switched on and off. The process involves the controller issuing commands cyclically according to a preset rhythm, driving a high-power switch to precisely connect or disconnect the power supply to the electromagnet, thereby periodically generating a strong magnetic force to attract the target material. After power failure, the magnetic force disappears instantly to release the material. The protective element absorbs the reverse high voltage generated during power failure, ensuring stable and automatic repetition of the attraction and release actions. The curved main magnet 8 can push small magnetic mineral particles from the outermost ring to the innermost ring through magnetic force when the metal flows along the guide plate 1. After moving and approaching the innermost ring, they are directly attracted by the auxiliary magnet 12 and released periodically. Vertical gravity, tangential centrifugal force, and radial magnetic force achieve precise capture of magnetic minerals. Magnetic field compensation solves the problem of insufficient centrifugal sedimentation caused by small particles, increasing the capture ability of fine magnetic particles.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A spiral chute with magnetic separation function, comprising guide plates (1) with limiting strips (2) on both sides, characterized in that, A connecting plate (4) is arranged horizontally between the two limiting bars (2). A main magnet (8) is provided at the lower end of the connecting plate (4). A gripping arm (7) is provided at the upper end of the connecting plate (4). A pair of first threaded rods (5) are welded between the gripping arm (7) and the main magnet (8). A first adjusting block (6) with threaded engagement is provided outside the first threaded rod (5). A second threaded rod (11) with threaded engagement is provided through one end of the connecting plate (4) near the innermost ring of the guide plate (1). A secondary magnet (12) is welded to the lower end of the second threaded rod (11). The secondary magnet (12) is an electromagnet.

2. The spiral chute with magnetic separation function according to claim 1, characterized in that, Both sides of the connecting plate (4) are welded with connecting frames (3), and the lower end of the connecting frame (3) is connected to the upper end of the limiting strip (2) through a slot.

3. A spiral chute with magnetic separation function according to claim 2, characterized in that, The main magnet (8) extends from the outermost position of the guide plate (1) to the innermost position.

4. A spiral chute with magnetic separation function according to claim 3, characterized in that, The second threaded rod (11) is provided with guide posts (13) that are welded and fixed to the auxiliary magnet (12) on both sides. The guide posts (13) slide through the upper and lower ends of the connecting plate (4). The second threaded rod (11) is provided with a second adjusting block (10) with threaded engagement on the outside.

5. A spiral chute with magnetic separation function according to claim 4, characterized in that, A handle (9) is welded to the upper end of the second threaded rod (11).

6. A spiral chute with magnetic separation function according to claim 5, characterized in that, The external part of the secondary magnet (12) is wrapped with a plastic film.

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