Pellet grain sorting device

Abstract

The utility model relates to pellet particle sorting technical field, specifically disclose a kind of pellet particle sorting device, including sorting box, and feeding belt and discharge belt are equipped in sorting box, discharge belt is placed below feeding belt, and first deslagging belt is equipped between feeding belt and discharge belt, first deslagging belt output end and feeding belt output end between are equipped with first inclined sieve plate, second inclined sieve plate is equipped between first deslagging belt output end and discharge belt input end, second inclined sieve plate is placed below first inclined sieve plate and forms Y letter type structure with first inclined sieve plate, and first inclined sieve plate lower end is overlapped on second inclined sieve plate upper end and there is interval between second inclined sieve plate, Y letter gentle slope structure formed between first inclined sieve plate and second inclined sieve plate, can reduce the drop height of pellet, reduce the rolling speed of pellet, avoid that pellet after pressing is scattered again, improve yield.

Description

Technical Field

[0001] This utility model relates to the field of pellet mineral particle separation technology, and in particular to a pellet mineral particle separation device. Background Technology

[0002] Iron concentrate, a core product after iron ore beneficiation (typically with an iron content ≥60%), is produced into pellets through a pelletizing process. This process has become an indispensable key link in the steel industry chain, holding significant practical importance in resource efficiency, smelting process optimization, environmental protection and emission reduction, and economic value enhancement. Compared to traditional sintered ore, pellets have advantages such as higher iron content, fewer harmful impurities, and better reducibility. When using pellets as furnace feed in blast furnaces, it reduces the amount of flux such as limestone and lowers the slag buildup burden. Currently, iron concentrate, through proper proportioning and pelletizing using a pelletizing machine, is screened using sorting equipment to remove slag from the pellets, facilitating subsequent processing.

[0003] For example, patent application number CN201510743047.1 discloses a steel ball sorting machine, including a frame, a sorting grid mounted on the frame, and sorting rods arranged parallel to each other and at equal intervals. The intervals between the sorting rods serve as sorting channels. The sorting grid is arranged in layers with opposite inclinations at different heights, with the width of the sorting channel of the higher grid being greater than that of the lower grid. Each of the layered, oppositely inclined sorting grids is connected to a collection device at its lower end. This sorting machine utilizes sorting grids with sorting channels of different widths. When steel balls of different diameters roll across the sorting channels, smaller steel balls fall through the channels, while larger steel balls roll along the channels to the lowest end of the sorting grid and enter the collection device. This type of separator uses a slide rail method to separate spherical objects. However, since most pellets are processed by pressing using pelletizing equipment, they are relatively loose in texture. As the pellets slide down the sorting channel, there is a large drop in the slide rail height and the sliding speed is too fast, which causes the pellets to collide with each other and with the target area frame, thus resulting in a decrease in the yield. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a pellet mineral particle separation device to overcome the shortcomings of existing devices.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a pellet mineral particle sorting device, including a sorting box, a feeding belt and a discharge belt are provided inside the sorting box, the discharge belt is placed below the feeding belt, and the feeding belt and the discharge belt are fixedly arranged inside the sorting box;

[0006] A first slag discharge belt is provided between the feeding belt and the discharge belt. The first slag discharge belt is fixedly installed inside the sorting box. A first inclined screen plate is provided between the output end of the first slag discharge belt and the output end of the feeding belt. A second inclined screen plate is provided between the output end of the first slag discharge belt and the input end of the discharge belt.

[0007] The second inclined screen plate is placed below the first inclined screen plate and forms a Y-shaped structure with the first inclined screen plate. The lower end of the first inclined screen plate overlaps the upper end of the second inclined screen plate and there is a gap between them.

[0008] A further improvement is that both the first and second inclined screen plates include a fixed plate, which is fixedly installed inside the sorting box. Multiple guide rods are provided on the side of the fixed plate, and the guide rods are fixedly connected to the fixed plate. A gap is left between two adjacent guide rods to allow residue to fall.

[0009] A further improvement is that a second slag discharge belt is provided on one side of the discharge belt. The second slag discharge belt is fixedly installed inside the sorting box and is located below the second inclined screen plate. The end of the second slag discharge belt that is away from the discharge belt extends to the outside of the sorting box.

[0010] A further improvement is that the output end of the first slag discharge belt is positioned below the feeding belt, the input end of the feeding belt is positioned above the first slag discharge belt, and the output end of the first slag discharge belt is positioned above the second slag discharge belt.

[0011] A further improvement is that: a first mounting plate is provided below the feeding belt, a second mounting plate is provided below the first slag discharge belt, the second mounting plate is offset from the discharge belt, a third mounting plate is provided below the discharge belt, and a fourth mounting plate is provided below the second slag discharge belt. A brush plate structure is provided at the upper end of the first, second, third, and fourth mounting plates, and the brush plate structure is detachably connected to the first, second, third, and fourth mounting plates.

[0012] A further improvement is that the brush plate structure includes a brush plate with bristles fixed at the upper end. The bristles are in contact with the lower end surfaces of the feeding belt, the first slag discharge belt, the discharge belt, and the second slag discharge belt. A locking block is provided at the lower end of the brush plate, and the locking block is fixedly connected to the brush plate. A slot is provided at the upper end of the first mounting plate, and the locking block is slidably connected to the slot.

[0013] A further improvement is made in that the cross-section of the card block is an inverted T-shape, and the card slot is a T-shaped groove adapted to the card block. The T-shaped structure ensures that the card block can only slide along its length within the card slot and cannot detach vertically, thus ensuring that the brush plate remains connected to the mounting plate throughout the cleaning process and preventing the brush plate from falling off due to conveyor belt vibration.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The residue falling from the first inclined screen plate will fall onto the first slag discharge belt, which will discharge the residue outwards. The residue falling from the second inclined screen plate will fall to the discharge belt side, completing the secondary sorting of the pellets and preventing qualified materials from being mixed with large pieces of slag.

[0016] The Y-shaped gentle slope structure formed between the first and second inclined sieve plates can reduce the drop height of the pellets, reduce the rolling speed of the pellets, prevent the pressed pellets from breaking apart again, and improve the yield. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of the external structure of the sorting box in this utility model.

[0019] Figure 2 This is a structural diagram of the internal structure of the sorting box in this utility model.

[0020] Figure 3 This is a structural diagram of the guide rod in this utility model.

[0021] Figure 4 This is a structural diagram of the brush plate in this utility model.

[0022] The components are: 1. Sorting box; 3. Feeding belt; 4. First slag discharge belt; 5. Discharge belt; 6. Second slag discharge belt; 7. First inclined screen plate; 8. Second inclined screen plate; 9. First mounting plate; 10. Second mounting plate; 11. Third mounting plate; 12. Fourth mounting plate; 13. Fixing plate; 14. Guide rod; 15. Slot; 16. Brush plate; 17. Brush bristles; 18. Locking block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] according to Figure 1 , 2As shown in Figures 3 and 4, this embodiment proposes a pellet mineral particle sorting device, including a sorting box 1. The sorting box 1 is provided with a feeding belt 3 and a discharge belt 5. The discharge belt 5 is placed below the feeding belt 3. The feeding belt 3 and the discharge belt 5 are fixedly arranged inside the sorting box 1.

[0025] A first slag discharge belt 4 is provided between the feeding belt 3 and the discharge belt 5. The first slag discharge belt 4 is fixedly installed inside the sorting box 1. A first inclined screen plate 7 is provided between the output end of the first slag discharge belt 4 and the output end of the feeding belt 3. A second inclined screen plate 8 is provided between the output end of the first slag discharge belt 4 and the input end of the discharge belt 5.

[0026] The pellets to be sorted are fed to the input end of the feeding belt 3. The feeding belt 3 drives the conveyor belt through the motor-driven roller shaft, which transports the pellets from outside the sorting box 1 to the first inclined screen plate 7. The pellets sliding along the first inclined screen plate 7 are guided to the second inclined screen plate 8, and then slide down from the second inclined screen plate 8 to the discharge belt 5. The residue falling from the first inclined screen plate 7 falls onto the first slag discharge belt 4, which discharges the residue outward. The residue falling from the second inclined screen plate 8 falls to one side of the discharge belt 5, completing the secondary sorting of the pellets and avoiding the mixing of qualified material with large pieces of slag.

[0027] The second inclined sieve plate 8 is placed below the first inclined sieve plate 7 and forms a Y-shaped structure with the first inclined sieve plate 7. The lower end of the first inclined sieve plate 7 overlaps the upper end of the second inclined sieve plate 8 and there is a gap between them.

[0028] The Y-shaped gentle slope structure formed between the first inclined sieve plate 7 and the second inclined sieve plate 8 can reduce the drop height of the pellets, reduce the rolling speed of the pellets, prevent the pellets after pressing from dispersing again, and improve the yield.

[0029] It is worth explaining in detail that both the first inclined screen plate 7 and the second inclined screen plate 8 include a fixing plate 13. The fixing plate 13 is fixedly installed inside the sorting box 1. Multiple guide rods 14 are provided on the side of the fixing plate 13. The guide rods 14 are fixedly connected to the fixing plate 13. A gap is left between two adjacent guide rods 14 to allow residue to fall.

[0030] When the pellets slide on the inclined screen plate, mineral powder and slag with a particle size smaller than the gap between the guide rods will fall naturally from the gap, while pellets with a particle size larger than the gap will slide along the surface of the guide rods.

[0031] More specifically, a second slag discharge belt 6 is provided on one side of the discharge belt 5. The second slag discharge belt 6 is fixedly installed inside the sorting box 1. The second slag discharge belt 6 is located below the second inclined screen plate 8. The end of the second slag discharge belt 6 away from the discharge belt 5 extends to the outside of the sorting box 1.

[0032] Fine residues falling from the guide rod 14 will fall directly into the second slag discharge belt 6, which is located directly below the second inclined screen plate 8. The second slag discharge belt 6 operates in the opposite direction to the discharge belt 5, conveying the residues away from the discharge belt and finally discharging them out of the sorting box 1, thus preventing the residues from mixing with qualified pellets again.

[0033] The conveyor belts are staggered to avoid material interference. Specifically, the output end of the first slag discharge belt 4 is placed below the feeding belt 3, the input end of the feeding belt 3 is placed above the first slag discharge belt 4, and the output end of the first slag discharge belt 4 is placed above the second slag discharge belt 6.

[0034] In a preferred embodiment, a first mounting plate 9 is provided below the feeding belt 3, a second mounting plate 10 is provided below the first slag discharge belt 4, the second mounting plate 10 is offset from the discharge belt 5, a third mounting plate 11 is provided below the discharge belt 5, and a fourth mounting plate 12 is provided below the second slag discharge belt 6. The upper ends of the first mounting plate 9, the second mounting plate 10, the third mounting plate 11, and the fourth mounting plate 12 are provided with brush plate structures, and the brush plate structures are detachably connected to the first mounting plate 9, the second mounting plate 10, the third mounting plate 11, and the fourth mounting plate 12.

[0035] When the conveyor belt is running, mineral powder residue easily adheres to its surface. The brush plate structure on the mounting plate continuously cleans the belt as it rotates. The brush plate structure is detachably connected to the mounting plate, allowing for quick removal and replacement when it wears out.

[0036] Specifically, the brush plate structure includes a brush plate 16, with brush bristles 17 fixed at the upper end of the brush plate 16. The brush bristles 17 are in contact with the lower end surfaces of the feeding belt 3, the first slag discharge belt 4, the discharge belt 5, and the second slag discharge belt 6. A locking block 18 is provided at the lower end of the brush plate 16, and the locking block 18 is fixedly connected to the brush plate 16. A slot 15 is provided at the upper end of the first mounting plate 9, and the locking block 18 is slidably connected to the slot 15.

[0037] When the conveyor belt rotates, the bristles 17 come into contact with the surface of the conveyor belt. The elastic deformation of the bristles sweeps off the adhering residue. When the bristles 17 are worn and need to be replaced, simply pull out the locking block 18 at the lower end of the brush plate 16 from the locking slot 15 opened at the upper end of each mounting plate 9.

[0038] The cross-section of the card block 18 is an inverted T-shape, and the card slot 15 is a T-shaped groove that fits the card block 18. The T-shaped structure allows the card block 18 to slide only along its length within the card slot 15, preventing it from detaching vertically. This ensures that the brush plate 16 remains connected to the mounting plate during the cleaning process, preventing the brush plate from falling off due to conveyor belt vibration.

[0039] How this application works:

[0040] The pellets to be sorted are fed to the input end of the feeding belt 3. The feeding belt 3 drives the conveyor belt through the motor-driven roller shaft, which transports the pellets from outside the sorting box 1 to the first inclined screen plate 7. The pellets sliding along the first inclined screen plate 7 are guided to the second inclined screen plate 8, and then slide down from the second inclined screen plate 8 to the discharge belt 5. The residue falling from the first inclined screen plate 7 falls onto the first slag discharge belt 4, which discharges the residue outward. The residue falling from the second inclined screen plate 8 falls to one side of the discharge belt 5, completing the secondary sorting of the pellets.

[0041] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a 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 communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0042] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A pellet ore sorting device, comprising a sorting box (1), wherein the sorting box (1) is provided with a feeding belt (3) and a discharge belt (5), the discharge belt (5) being positioned below the feeding belt (3), characterized in that: The feeding belt (3) and the discharge belt (5) are fixedly installed inside the sorting box (1); A first slag discharge belt (4) is provided between the feeding belt (3) and the discharge belt (5). The first slag discharge belt (4) is fixedly installed inside the sorting box (1). A first inclined screen plate (7) is provided between the output end of the first slag discharge belt (4) and the output end of the feeding belt (3). A second inclined screen plate (8) is provided between the output end of the first slag discharge belt (4) and the input end of the discharge belt (5). The second inclined sieve plate (8) is placed below the first inclined sieve plate (7) and forms a Y-shaped structure with the first inclined sieve plate (7). The lower end of the first inclined sieve plate (7) overlaps the upper end of the second inclined sieve plate (8) and there is a gap between them.

2. The pellet separation device according to claim 1, characterized in that: Both the first inclined screen plate (7) and the second inclined screen plate (8) include a fixing plate (13). The fixing plate (13) is fixedly installed inside the sorting box (1). Multiple guide rods (14) are provided on the side of the fixing plate (13). The guide rods (14) are fixedly connected to the fixing plate (13). There is a gap between two adjacent guide rods (14) to allow residue to fall.

3. The pellet separation device according to claim 1, characterized in that: A second slag discharge belt (6) is provided on one side of the discharge belt (5). The second slag discharge belt (6) is fixedly installed inside the sorting box (1). The second slag discharge belt (6) is placed below the second inclined screen plate (8). The end of the second slag discharge belt (6) away from the discharge belt (5) extends to the outside of the sorting box (1).

4. The pellet separation device according to claim 3, characterized in that: The output end of the first slag discharge belt (4) is located below the feeding belt (3), the input end of the feeding belt (3) is located above the first slag discharge belt (4), and the output end of the first slag discharge belt (4) is located above the second slag discharge belt (6).

5. The pellet separation device according to claim 3, characterized in that: The feeding belt (3) is provided with a first mounting plate (9) below it, the first slag discharge belt (4) is provided with a second mounting plate (10) below it, the second mounting plate (10) is offset from the discharge belt (5), the discharge belt (5) is provided with a third mounting plate (11) below it, the second slag discharge belt (6) is provided with a fourth mounting plate (12) below it, the first mounting plate (9), the second mounting plate (10), the third mounting plate (11) and the fourth mounting plate (12) are provided with a brush plate structure at their upper ends, and the brush plate structure is detachably connected to the first mounting plate (9), the second mounting plate (10), the third mounting plate (11) and the fourth mounting plate (12).

6. The pellet separation device according to claim 5, characterized in that: The brush plate structure includes a brush plate (16), with brush bristles (17) fixed at the upper end of the brush plate (16). The brush bristles (17) are in contact with the lower end surfaces of the feeding belt (3), the first slag discharge belt (4), the discharge belt (5), and the second slag discharge belt (6). A locking block (18) is provided at the lower end of the brush plate (16), and the locking block (18) is fixedly connected to the brush plate (16). A slot (15) is provided at the upper end of the first mounting plate (9), and the locking block (18) is slidably connected to the slot (15).

7. The pellet separation device according to claim 6, characterized in that: The card block (18) has an inverted T-shaped cross-section, and the card slot (15) is a T-shaped slot that is adapted to the card block (18).

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