Arc surface circulating reciprocating movement scraper discharging device

Abstract

This invention relates to the field of magnetic levitation equipment technology, specifically to a circular arc surface reciprocating scraper unloading device. The device comprises a scraping mechanism inside a housing, and a lifting mechanism at the top of the housing for driving the scraping mechanism up and down. The scraping mechanism includes a vertical thick plate, a scraper, and a guide assembly. An upper support is located at the top of the vertical thick plate, and the scraper is vertically positioned on one side of the vertical thick plate. The lifting mechanism includes a drive assembly and a steel wire rope. The drive assembly is connected to a turntable, and a rotating shaft is vertically positioned at the outer edge of the turntable. A second rolling bearing is mounted on the rotating shaft. The upper end of the steel wire rope is connected to the outer surface of the second rolling bearing, and the lower end of the steel wire rope is connected to the upper support. This invention effectively allows magnetic minerals accumulated in the unloading area to move rapidly downwards and escape the magnetic field, completing the unloading operation; thus preventing the long-term accumulation of magnetic minerals in the unloading area and improving the sorting efficiency of the magnetic levitation equipment.

Description

Technical Field

[0001] This invention relates to the field of magnetic levitation equipment technology, specifically to a scraper unloading device with a circular arc surface reciprocating motion. Background Technology

[0002] During the sorting process of the magnetic levitation equipment, magnetic minerals move from the sorting area to the unloading arc area along the outer surface of the cylindrical magnetic roller. Due to the magnetic force, the efficiency of unloading the magnetic minerals by their own gravity in the unloading area is relatively low, causing them to accumulate easily. This accumulation then gradually extends along the arc surface to the sorting area, affecting the sorting efficiency of the magnetic levitation equipment. Therefore, timely removal of magnetic minerals from the unloading arc area is crucial to ensuring the sorting efficiency of the equipment.

[0003] like Figure 1 The diagram shows a schematic of ore accumulation on the surface of a magnetic levitation equipment housing. Driven by the magnetic force of a rotating magnetic roller, the magnetic minerals move in the opposite direction along the housing surface, gradually moving to the arc-shaped unloading area on the right side of the housing. From the arc-shaped unloading area downwards, the housing surface gradually moves away from the magnetic field. The magnetic minerals tend to move from the area of ​​weak magnetic field to the area of ​​strong magnetic field. Therefore, at the lower part of the arc-shaped unloading area, when the minerals move downwards from the area of ​​strong magnetic field to the area of ​​weak magnetic field under the action of inertia and gravity, they are subjected to the magnetic force of the magnetic field. Some minerals do not have time to escape the magnetic field and move in the opposite direction, forming a reverse resistance on the magnetic material moving from the cylindrical surface of the housing. This greatly reduces the downward movement speed of the minerals, gradually forming a thick layer of material, which gradually accumulates along the surface of the cylinder from the unloading area to the sorting area, causing ore accumulation on the surface of the cylinder in the entire sorting area, making it impossible for the equipment to sort normally.

[0004] Existing magnetic separation equipment typically uses scrapers to clean up accumulated magnetic minerals. However, most magnetic separation equipment has stationary scrapers, and the instantaneous relative motion between the scraper and the minerals is linear. This linear motion unloading method cannot effectively solve the problem of mineral accumulation on the curved drum surface.

[0005] like Figure 2 The diagram shows a conventional dry magnetic roller unloading method for removing magnetic minerals using a scraper. After the minerals are fed into the dry magnetic roller, the magnetic material adheres to the roller and moves to the bottom. Under the action of the scraper, the magnetic minerals are instantly scraped off and detached from the roller due to inertia. The scraper remains stationary while the roller rotates. The instantaneous motion of the roller relative to the scraper is a linear motion tangential to the circumference of the roller, and the interaction between the minerals and the scraper is point contact. Although this unloading method can remove magnetic minerals, it cannot solve the problem of magnetic mineral accumulation in the unloading arc area.

[0006] like Figure 3The diagram illustrates the rotary scraper method in a conventional trough flotation machine. In the tank filled with slurry, minerals, along with air bubbles, rise to the top of the liquid surface under the influence of reagents. The rotating scraper continuously scrapes the air bubbles and floating minerals off the surface, thus separating minerals of different properties. The scraper rotates while the minerals remain relatively stationary, and the scraper facilitates mineral separation. However, the interaction between the minerals and the scraper is still point contact; the minerals flow with the fluid on the scraper surface to the discharge bin. While this discharge method can remove magnetic minerals, it still cannot solve the problem of magnetic mineral accumulation in the discharge arc area.

[0007] Because the unloading area of ​​the maglev equipment is a transition zone between a circular arc and a straight line, and the unloading area is below the liquid surface, neither rotating nor fixed scrapers can solve the unloading problem. Therefore, the magnetic minerals accumulated in the circular unloading area of ​​existing maglev equipment are difficult to remove. Summary of the Invention

[0008] To address the problem of inconvenient removal of magnetic minerals accumulated in the arc-shaped unloading area of ​​existing magnetic levitation equipment, this invention provides an arc-shaped reciprocating scraper unloading device. This device can effectively cause the magnetic minerals accumulated in the unloading area to move rapidly downwards and escape the magnetic field, thus completing the unloading operation. This avoids the long-term accumulation of magnetic minerals in the unloading area and improves the sorting efficiency of the magnetic levitation equipment.

[0009] To achieve the above objectives, the technical solution of the present invention is: a circular arc surface reciprocating motion scraper unloading device, comprising a box and a magnetic roller rotatably disposed below the box. The box is provided with a scraping mechanism inside, and the top of the box is provided with a lifting mechanism for driving the scraping mechanism to rise and fall. The lifting mechanism is used to drive the scraping mechanism to rise, so that the scraping mechanism can promptly remove the magnetic minerals accumulated in the unloading arc area.

[0010] The scraping mechanism includes a vertical thick plate, a scraper, and a guide assembly. The top of the vertical thick plate is provided with an upper support, and the scraper is vertically arranged on one side of the vertical thick plate. The scraper is used to clean the magnetic minerals accumulated in the unloading arc area.

[0011] The lifting mechanism includes a drive assembly and a wire rope. The drive assembly is connected to a turntable, and a rotating shaft is vertically arranged at the outer edge of the turntable. A second rolling bearing is arranged on the rotating shaft. The upper end of the wire rope is connected to the outer surface of the second rolling bearing, and the lower end of the wire rope is connected to the upper support. With the cooperation of the drive assembly and the turntable, the wire rope drives the upper support to perform a lifting motion, thereby lifting the vertical thick plate and the scraper.

[0012] Furthermore, the guide assembly includes a guide rail and vertical shafts symmetrically arranged at both ends of the vertical thick plate. The guide rail is symmetrically arranged on both sides of the inside of the box. The guide rail includes a vertical section one, an arc section and a vertical section two arranged sequentially from top to bottom. A limiting block located below the guide rail is also provided on the inside of the box. The limiting block plays a role in limiting and blocking the vertical thick plate.

[0013] Furthermore, a rolling bearing is provided on the vertical axis. The rolling bearing is located inside the guide rail. The outer diameter of the rolling bearing is smaller than the width of the guide rail. The cooperation between the rolling bearing and the guide rail facilitates the vertical thick plate to drive the scraper to move up and down.

[0014] Furthermore, the guiding assembly includes roller one and roller two. Two rollers one are provided on the upper and lower sides of both ends of the scraper, and roller two is provided at the lower edge of the vertical thick plate. When the vertical thick plate and the scraper slide down rapidly under their own weight, the roller one moves downward close to the box body to make the scraper scrape the magnetic minerals. When the vertical thick plate and the scraper move upward, roller two is used as a fulcrum to make roller one detach from the box body while facilitating the upward movement of the vertical thick plate.

[0015] Furthermore, a channel steel is provided on the top of the housing, and the drive assembly is located on the top of the channel steel. The drive assembly includes a drive motor and a reducer. The output shaft of the drive motor is connected to the input shaft of the reducer, and the turntable is provided at the end of the output shaft of the reducer. By cooperating with the drive motor and the reducer, the purpose of driving the turntable to rotate is achieved.

[0016] Furthermore, a hook is provided at the middle position of the top of the upper support, and the lower end of the wire rope is connected to the hook so that the wire rope can drive the upper support to perform lifting movements.

[0017] Furthermore, a positioning circular plate is also provided on the rotating shaft, which serves to limit the movement of the second rolling bearing.

[0018] The beneficial effects of the present invention through the above technical solution are as follows:

[0019] This invention can effectively cause magnetic minerals accumulated in the arc-shaped unloading area to move rapidly downwards and remove them from the magnetic field, thus completing the unloading operation. It solves the problem of the difficulty in removing magnetic minerals accumulated in the arc-shaped unloading area and avoids the accumulation of magnetic minerals in the unloading area, thereby improving the sorting efficiency of the power magnetic levitation equipment.

[0020] The lifting mechanism of this invention drives the scraping mechanism to perform lifting motion via a steel wire rope. During the descent motion of the scraping mechanism, the scraper cleans the magnetic minerals accumulated in the unloading area. The vertical thick plate acts as a counterweight, so that when the turntable drives the rotating shaft to the highest point, the vertical thick plate and the scraper slide down rapidly under their own weight. This causes the scraper to exert a downward pushing force along the arc surface of the box on the magnetic minerals, causing the magnetic minerals to slide down and achieving the effect of removing the magnetic minerals.

[0021] This invention uses a guide assembly to facilitate the lifting and lowering of a vertical thick plate. The guide rail in the guide assembly also limits the range of movement of the vertical thick plate. The width of the guide rail is greater than the outer diameter of the rolling bearing. The purpose is to ensure that during the downward lifting of the vertical thick plate, the rolling bearing is close to the right side of the guide rail, ensuring a certain gap between the end of the scraper and the box body, allowing the magnetic minerals to pass smoothly through the scraper. Furthermore, the function of the roller in the guide assembly is to use the roller as a fulcrum when the vertical thick plate moves upward, so that the roller detaches from the surface of the box body above the magnetic roller. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the surface area of ​​the housing of an existing magnetic levitation equipment.

[0023] Figure 2 This is a schematic diagram of the existing conventional dry magnetic roller scraper unloading method for removing magnetic minerals;

[0024] Figure 3 This is a schematic diagram of the existing conventional trough flotation machine's rotary scraper ore scraping method;

[0025] Figure 4 This is a schematic diagram of the structure of a circular arc surface reciprocating scraper unloading device according to the present invention. Figure 1 ;

[0026] Figure 5 This is a schematic diagram of the ore scraping mechanism of the present invention. Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the ore scraping mechanism of the present invention. Figure 2 ;

[0028] Figure 7 yes Figure 4 Enlarged structural diagram at point A;

[0029] Figure 8 This is a schematic diagram of the structure of a circular arc surface reciprocating scraper unloading device according to the present invention. Figure 2 ;

[0030] Figure 9 This is a schematic diagram of the ore scraping mechanism of the present invention. Figure 3 ;

[0031] Figure 10 This is a schematic diagram of the ore scraping mechanism of the present invention. Figure 4 .

[0032] The attached diagram is labeled as follows: 1 is the housing, 2 is the magnetic roller, 3 is the turntable, 4 is the channel steel, 6 is the rotating shaft, 7 is the positioning circular plate, 8 is the wire rope, 9 is the vertical thick plate, 10 is the upper support, 11 is the hook, 12 is the scraper, 13 is the vertical shaft, 14 is the first rolling bearing, 15 is the first vertical section, 16 is the arc section, 17 is the second vertical section, 18 is the limit block, 19 is the first roller, and 20 is the second roller. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0034] Example 1:

[0035] like Figures 4-7 As shown, a circular arc surface reciprocating motion scraper unloading device includes a housing 1 and a magnetic roller 2 rotatably disposed below the housing 1. The bottom of the housing 1 has an arc-shaped structure and matches the magnetic roller 2. In this embodiment, the housing 1 is the housing of a power magnetic levitation device. A scraping mechanism is provided inside the housing 1. The scraping mechanism is located on the right side of the magnetic roller 2. The scraping mechanism removes the magnetic minerals accumulated in the unloading arc area. The top of the housing 1 is provided with a lifting mechanism for driving the scraping mechanism to move up and down. The lifting mechanism can drive the scraping mechanism to move up and down inside the housing 1.

[0036] The scraping mechanism includes a vertical thick plate 9, a scraper 12, and a guide assembly. The top of the vertical thick plate 9 is provided with an upper support 10, which serves as a counterweight. The upper support 10 is welded and fixed to the top of the vertical thick plate 9. The scraper 12 is vertically arranged on one side of the vertical thick plate 9 and is welded and fixed to the side of the vertical thick plate 9 near the arc-shaped surface of the box 1.

[0037] The lifting mechanism includes a drive assembly and a steel wire rope 8. The drive assembly is connected to a turntable 3, which can be driven to rotate. The lower part of the turntable 3 is located inside the housing 1. A rotating shaft 6 is vertically arranged at the outer edge of the turntable 3. The rotating shaft 6 is welded and fixed to the outer side of the turntable 3. A second rolling bearing is arranged on the rotating shaft 6. The upper end of the steel wire rope 8 is connected to the outer surface of the second rolling bearing, and the lower end of the steel wire rope 8 is connected to the upper support 10. The purpose of the second rolling bearing is to enable the upper support 10 to be lifted by the steel wire rope 8 during the rotation of the turntable 3, so as to achieve the effect of lifting the vertical thick plate 9 and the scraper 12.

[0038] The guiding assembly includes a guide rail and vertical shafts 13 symmetrically arranged at both ends of the vertical thick plate 9. The guide rail is symmetrically arranged on both sides of the inside of the housing 1. The guide rail includes a vertical section 15, an arc section 16 and a vertical section 17 arranged from top to bottom. A limiting block 18 located below the guide rail is also provided on the inside of the housing 1. The limiting block 18 plays a limiting and blocking role for the vertical thick plate 9.

[0039] A rolling bearing 14 is provided on the vertical shaft 13. The rolling bearing 14 is located inside the guide rail, and its outer diameter is smaller than the width of the guide rail. This is to facilitate the smooth sliding of the scraper 12, and at the same time, to leave a gap between the scraper 12 and the surface of the housing 1 near the magnetic roller 2 when the scraper 12 is lifted, so as to avoid the scraper 12 creating resistance to the movement of the magnetic mineral. In this embodiment, there are two vertical shafts 13 at both ends of the vertical thick plate 9, and there are also two rolling bearings 14. Figure 4 As shown, the vertical thick plate 9 is at its highest position. At this time, the rolling bearing 14 at the upper end of the vertical thick plate 9 is located at the connection between the vertical section 15 and the arc section 16, and the rolling bearing 14 at the lower end is located inside the vertical section 17.

[0040] The top of the housing 1 is provided with a channel steel 4, and the drive assembly is provided on the top of the channel steel 4. The drive assembly includes a drive motor and a reducer. The drive motor and the reducer are installed on the top of the channel steel 4. The output shaft of the drive motor is connected to the input shaft of the reducer. The output shaft of the reducer is provided with the turntable 3. When the drive motor is turned on, the output shaft of the reducer can drive the turntable 3 to rotate.

[0041] A hook 11 is provided at the middle position of the top of the upper support 10. The hook 11 is welded and fixed to the upper support 10. The lower end of the wire rope 8 is connected to the hook 11. With the cooperation of the hook 11, the wire rope 8 can lift the upper support 10 upward.

[0042] The rotating shaft 6 is also provided with a positioning circular plate 7, and the rolling bearing 2 of the positioning circular plate 7 plays a limiting role to prevent the rolling bearing 2 from moving laterally on the rotating shaft 6.

[0043] The working principle of this invention is as follows: When the turntable 3 is driven to rotate by the drive assembly, and the turntable 3 rotates counterclockwise to drive the rotating shaft 6 to rotate to the highest point, the vertical thick plate 9 and the scraper 12 slide down rapidly in the guide rail by their own gravity. During this process, the rolling bearing 14 moves in the guide rail. When the scraper 12 slides down from the upper vertical section 15 to the arc section 16 guide rail, the scraper 12 gradually approaches the inner side of the box 1. After entering the arc section 16 guide rail, the end of the scraper 12 away from the vertical thick plate 9 approaches the inner side of the box 1. The scraper 12 comes into contact with the magnetic mineral. Under the action of the vertical thick plate 9 and the scraper 12's own gravity, the scraper 12 applies a downward pushing force along the arc surface to the magnetic mineral, so that the magnetic mineral slides down along the arc surface and the lower straight section of the box 1, and then the unloading operation is completed.

[0044] When scraper 12 moves downward, wire rope 8 is located on the left side of the guide rail, and rolling bearing 14 slides close to the left side of the guide rail. When scraper 12 slides to the bottom, wire rope 8 swings to the upper right under the rotation drive of turntable 3. At this time, scraper 12 is lifted, and rolling bearing 14 slides close to the right side of the guide rail. A certain gap is generated between scraper 12 and the inner side of box 1. Magnetic minerals move within the reserved gap and pass through scraper 12. When scraper 12 is lifted to the upper vertical section 15 guide rail, as scraper 12 is lifted, scraper 12 gradually moves away from the arc surface of box 1. A large amount of magnetic minerals move to the arc unloading area. When scraper 12 is lifted to the top, it slides down again to repeat the unloading process.

[0045] Example 2:

[0046] like Figures 8-10 As shown, the similarities between Embodiment 2 and Embodiment 1 will not be described in detail. The difference is that the guide assembly includes roller 19 and roller 20. Roller 19 includes a roller seat, which is welded and fixed to the scraper 12. Roller 20 also includes a roller seat, which is welded and fixed to the vertical thick plate 9. Two rollers 19 are provided on the upper and lower sides of both ends of the scraper 12. Roller 20 is provided at the lower edge of the vertical thick plate 9. Two rollers 20 are installed on both rear ends of the vertical thick plate 9.

[0047] When the turntable 3 is driven to rotate by the drive assembly, and the turntable 3 rotates counterclockwise, causing the rotating shaft 6 to rotate to its highest point, the vertical thick plate 9 and the scraper 12 quickly slide down onto the arc surface of the box 2 under their own gravity. Under the action of their own gravity, the roller 19 slides down close to the arc surface of the box 1, and the scraper 12 performs scraping operations. When the scraper 12 slides to the bottom, the wire rope 8 swings to the upper right under the drive of the turntable 3. At this time, the scraper 12 performs lifting motion, and the roller 20 on the back edge of the vertical thick plate 9 is close to the right side of the box. As the scraper 12 is lifted, it rolls upward. Under the rightward pulling force of the wire rope 8, the roller 19 uses the roller 20 on the back of the vertical thick plate 9 as a fulcrum and separates from the inner side of the box 1, thus leaving a larger gap for the magnetic minerals to move through. When the scraper 12 is lifted to the top, the scraper 12 slides down again to complete the unloading process.

[0048] The embodiments described above are merely preferred embodiments of the invention and are not intended to limit the scope of the invention. Therefore, any equivalent changes or modifications made to the technical solutions described in the claims of this invention should be included within the scope of the patent application of this invention.

Claims

1. A circular arc surface reciprocating scraper ore unloading device, comprising a housing (1) and a magnetic roller (2) rotatably disposed below the housing (1), characterized in that, The box (1) is equipped with a scraping mechanism inside, and the top of the box (1) is equipped with a lifting mechanism for driving the scraping mechanism to rise and fall. The scraping mechanism includes a vertical thick plate (9), a scraper (12) and a guide assembly. The top of the vertical thick plate (9) is provided with an upper support (10), and the scraper (12) is vertically arranged on one side of the vertical thick plate (9). The lifting mechanism includes a drive assembly and a wire rope (8). The drive assembly is connected to a turntable (3). A rotating shaft (6) is vertically arranged at the outer edge of the turntable (3). A second rolling bearing is arranged on the rotating shaft (6). The upper end of the wire rope (8) is connected to the outer surface of the second rolling bearing, and the lower end of the wire rope (8) is connected to the upper support (10). The guide assembly includes a guide rail and vertical shafts (13) symmetrically arranged at both ends of the vertical thick plate (9). The guide rail is symmetrically arranged on both sides of the inside of the box (1). The guide rail includes a vertical section one (15), an arc section (16) and a vertical section two (17) arranged from top to bottom. A limiting block (18) located below the guide rail is also provided on the inside of the box (1). A rolling bearing (14) is provided on the vertical shaft (13). The rolling bearing (14) is located inside the guide rail, and the outer diameter of the rolling bearing (14) is smaller than the width of the guide rail.

2. The arc-shaped reciprocating scraper ore unloading device according to claim 1, characterized in that, The guide assembly includes roller one (19) and roller two (20). Two rollers one (19) are provided on the upper and lower sides of both ends of the scraper (12), and roller two (20) is provided at the lower edge of the vertical thick plate (9).

3. The arc-surface reciprocating scraper ore unloading device according to claim 1, characterized in that, The top of the housing (1) is provided with a channel steel (4), and the drive assembly is provided on the top of the channel steel (4). The drive assembly includes a drive motor and a reducer. The output shaft of the drive motor is connected to the input shaft of the reducer, and the turntable (3) is provided at the end of the output shaft of the reducer.

4. The arc-surface reciprocating scraper ore unloading device according to claim 1, characterized in that, A hook (11) is provided at the middle position of the top of the upper support (10), and the lower end of the wire rope (8) is connected to the hook (11).

5. The arc-shaped reciprocating scraper ore unloading device according to claim 1, characterized in that, The rotating shaft (6) is also provided with a positioning circular plate (7).

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