A mine sizing and screening apparatus

Abstract

The utility model discloses a kind of mining grading screening devices, it relates to screening technical field, including cylindrical shell shape box, two disc-like screen, motor that can be forward and reverse and variable speed, rotating shaft, a pair of support ring, multiple support rods and a pair of limiting components, the bottom surface edge position of the box is provided with multiple support legs, the motor is fixedly arranged at the bottom surface center position of box, the lower end of the rotating shaft is rotatably penetrated through the bottom surface of box and is fixedly connected with the output end of motor, the upper end of rotating shaft is rotatably connected with the upper surface center position of box;Motor drives rotating shaft in the utility model, drive support rod, reciprocating rotation of screen on support ring, make material and the surface of screen relative displacement, to carry out quick screening, the particle greater than screen hole size is discharged from box by centrifugal force, mainly drive screen work when screening, work vibration is small, resonance is not generated, not easy to damage, whole set of device is stable, energy consumption is low, maintenance cost is low.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, specifically a mining grading and screening device. Background Technology

[0002] Ore refers to a mineral aggregate from which useful components can be extracted or which possesses certain usable properties. In the field of mineral processing and production, material classification and screening is one of the core technological processes.

[0003] Existing grading and screening equipment generally uses a vibrating motor to drive the screen to vibrate at high frequency to achieve material separation. Specifically, the vibrating motor drives the screen body to vibrate back and forth in a specific direction (such as a straight line, ellipse or circular trajectory), causing the material to jump forward on the screen surface. Particles smaller than the screen hole size pass through the screen under the action of gravity, thereby achieving grading.

[0004] However, existing technologies have some drawbacks: First, the vibratory motor needs to overcome the inertial work of the material, screen, and shell, as well as the force of the vibratory spring, resulting in significant energy loss and low energy conversion rate. Second, continuous high-frequency vibration can easily lead to cracking of the screen frame welds and loosening of bolts, increasing the frequency and cost of equipment maintenance. Finally, the periodic impact force generated by vibration can easily cause equipment resonance, requiring additional vibration damping bases or reinforcement of the foundation structure, increasing installation complexity and site costs. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, this utility model provides a mining grading and screening device. A motor-driven rotating shaft drives the screen on the support rod and support ring to rotate reciprocally, causing relative displacement between the material and the surface of the screen, thereby enabling rapid screening. Particles larger than the screen aperture size are discharged from the housing by centrifugal force. The device primarily drives the screen during screening, resulting in low vibration, no resonance, and minimal damage. The entire device is stable, energy-efficient, and has low maintenance costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mining grading and screening device, comprising a cylindrical shell-shaped box, two disc-shaped screens, a motor capable of forward and reverse rotation and variable speed, a rotating shaft, a pair of support rings, multiple support rods, and a pair of limiting components. Multiple support legs are provided at the bottom edge of the box. The motor is fixedly positioned at the center of the bottom surface of the box. The lower end of the rotating shaft rotatably penetrates the bottom surface of the box and is fixedly connected to the output end of the motor. The upper end of the rotating shaft is rotatably connected to the center of the upper surface of the box. A pair of support rings are arranged vertically and rotatably connected to the inner wall of the box via a pair of limiting components. The inner rings of the pair of support rings are fixedly connected to the side surface of the rotating shaft via multiple pairs of support rods. The two screens are respectively fixedly mounted on the pair of support rings and support rods. The position where the rotating shaft penetrates the screens is sealed. The diameter of the screens matches the inner diameter of the box. A feed inlet is provided at the center of the upper surface of the box. The container has multiple feed inlets arranged in a circular matrix on its upper surface corresponding to the feed inlets. The upper screen is a coarse screen, and the lower screen is a fine screen. Multiple first discharge outlets are evenly distributed on the side surface of the container corresponding to the upper surface of the coarse screen. A ring-shaped first collection box is positioned on the outer wall of the container corresponding to the multiple first discharge outlets. Multiple second discharge outlets are evenly distributed on the side surface of the container corresponding to the upper surface of the fine screen. A ring-shaped second collection box is positioned on the outer wall of the container corresponding to the multiple second discharge outlets. A disc is fixedly mounted on the rotating shaft below the fine screen. The diameter of the disc matches the inner diameter of the container. Multiple third discharge outlets are evenly distributed on the side surface of the container corresponding to the upper surface of the disc. A ring-shaped third collection box is positioned on the outer wall of the container corresponding to the multiple third discharge outlets. Discharge outlets are located at the bottom of the outer surfaces of the first, second, and third collection boxes.

[0007] Preferably, the limiting component includes a sliding groove and a sliding ring. The sliding ring is fixedly disposed on the bottom surface of the support ring. A fixing ring is disposed on the inner side wall of the housing corresponding to the position of the support ring. The sliding groove is opened on the upper surface of the fixing ring. When the support ring rotates, the sliding ring and the sliding groove slide relative to each other.

[0008] Preferably, a limiting component is provided between the disc and the inner wall of the box, allowing the disc to rotate relative to the box.

[0009] Preferably, the bottoms of the first collection box, the second collection box, and the third collection box are all inclined downwards towards the discharge port.

[0010] Preferably, a wear-resistant block is provided at the center of the upper surface of the housing.

[0011] This utility model provides a mineral grading and screening device, which has the following beneficial effects:

[0012] 1. In this utility model, the motor drives the rotating shaft to drive the screen on the support rod and support ring to rotate back and forth, so that the material and the surface of the screen are relatively displaced, thereby performing rapid screening. Particles larger than the screen hole size are discharged from the box by centrifugal force. During screening, the screen is mainly driven to work. The working vibration is small, no resonance is generated, and it is not easy to be damaged. The whole device is stable, has low energy consumption, and low maintenance cost.

[0013] 2. The limiting component in this utility model includes a slip ring and a sliding groove. The slip ring on the bottom surface of the support ring slides in the sliding groove on the fixed ring to ensure the stability of the screen on the support ring and the support rod. The bottoms of the first collection box, the second collection box and the third collection box are all inclined downwards towards the discharge port to facilitate the discharge of the screened material. Attached Figure Description

[0014] Figure 1 This is a front sectional view of a mining grading and screening device according to the present invention;

[0015] Figure 2 This is a top cross-sectional view of a mining grading and screening device according to the present invention;

[0016] Figure 3 This is a top view of the support ring location in this utility model.

[0017] In the diagram: 1. Motor; 2. Housing; 3. Disc; 4. Second collection box; 5. Slip ring; 6. Fine screen; 7. Coarse screen; 8. First collection box; 9. Rotating shaft; 10. Wear-resistant block; 11. Feed hopper; 12. Feed inlet; 13. First discharge outlet; 14. Support ring; 15. Second discharge outlet; 16. Slide groove; 17. Fixing ring; 18. Third discharge outlet; 19. Third collection box; 20. Support leg; 21. Support rod; 22. Discharge port. Detailed Implementation

[0018] 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.

[0019] like Figure 1-3As shown, a mining grading and screening device includes a cylindrical shell-shaped box 2, two disc-shaped screens 3, a motor 1 capable of forward and reverse rotation and variable speed, a rotating shaft 9, a pair of support rings 14, multiple support rods 21, and a pair of limiting components. Multiple support legs 20 are provided at the bottom edge of the box 2. The motor 1 is fixedly positioned at the center of the bottom surface of the box 2. The lower end of the rotating shaft 9 rotatably penetrates the bottom surface of the box 2 and is fixedly connected to the output end of the motor 1. The upper end of the rotating shaft 9 is rotatably connected to the center of the upper surface of the box 2. A pair of support rings 14 are arranged vertically and rotatably connected to the inner wall of the box 2 through a pair of limiting components. The inner rings of the pair of support rings 14... Multiple pairs of support rods 21 are fixedly connected to the side surface of the rotating shaft 9. Two screens are respectively fixedly mounted on a pair of support rings 14 and support rods 21, and the position where the rotating shaft 9 passes through the screen is sealed. The diameter of the screen matches the inner diameter of the box body 2. A feed hopper 11 is provided at the center of the upper surface of the box body 2. Multiple feed ports 12 are opened in a circular matrix on the upper surface of the box body 2 corresponding to the positions of the feed ports 12. The upper screen is a coarse screen 7, and the lower screen is a fine screen 6. Multiple first discharge ports 13 are evenly opened on the side surface of the box body 2 corresponding to the upper surface of the coarse screen 7. The outer side wall of the box body 2 corresponds to multiple first discharge ports 13. A first annular collecting box 8 is positioned at location 3. Multiple second discharge ports 15 are evenly distributed on the side surface of the box body 2, corresponding to the upper surface of the fine screen 6. A second annular collecting box 4 is positioned on the outer wall of the box body 2, corresponding to the multiple second discharge ports 15. A disc 3 is fixedly mounted on the rotating shaft 9, below the fine screen 6. The diameter of the disc 3 matches the inner diameter of the box body 2. Multiple third discharge ports 18 are evenly distributed on the side surface of the box body 2, corresponding to the upper surface of the disc 3. A third annular collecting box 19 is positioned on the outer wall of the box body 2, corresponding to the multiple third discharge ports 18. The first collecting box 8, second collecting box 4, and third collecting box 19 are... A discharge port 22 is provided at the bottom of the outer surface of the box 9; the limiting component includes a sliding groove 16 and a sliding ring 5, the sliding ring 5 is fixedly disposed on the bottom surface of the support ring 14, and a fixing ring 17 is provided on the inner side wall of the box 2 corresponding to the position of the support ring 14. The sliding groove 16 is opened on the upper surface of the fixing ring 17. When the support ring 14 rotates, the sliding ring 5 slides relative to the sliding groove 16; a limiting component is provided between the disc 3 and the inner side wall of the box 2, and the disc 3 can rotate relative to the box 2; the bottoms of the first collection box 8, the second collection box 4 and the third collection box 19 are all inclined downward toward the discharge port 22; a wear-resistant block 10 is provided at the center of the upper surface of the box 2.

[0020] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, as follows:

[0021] According to the instruction manual Figure 1-3As can be seen, when this utility model is working, the motor 1 rotates in a forward and reverse reciprocating mode. The motor 1 drives the rotating shaft 9 to drive the support rod 21, support ring 14 and screen to rotate reciprocally. The material is fed from the feed hopper 11 and enters from the feed port 12, falling onto the coarse screen 7. The rotation speed of the coarse screen 7 driven by the motor 1 can break the friction between the material and the screen, thereby causing displacement and achieving the purpose of rapid screening. The material with a particle size smaller than the mesh of the coarse screen 7 falls onto the fine screen 6. Similarly, the rotation speed of the fine screen 6 driven by the motor 1 is sufficient to cause relative displacement between the material and the upper surface of the screen. The material with a particle size smaller than the mesh of the fine screen 6 falls onto the disc 3. Since the speed of the motor 1 is adjustable, the material on the coarse screen 7, the fine screen 6 and the disc 3 can be discharged from the first discharge port 13, the second discharge port 15 and the third discharge port 18 respectively to the first collection box 8, the second collection box 4 and the third collection box 19 under the centrifugal force, and finally discharged from the discharge port 22. This utility model uses a central motor 1 to drive a rotating shaft 9, which in turn drives the screen on the support rod 21 and support ring 14 to rotate back and forth, causing the material to move relative to the surface of the screen, thereby performing rapid screening. During screening, the motor 1 mainly drives the screen to work. Compared with the existing vibrating motor 1, it reduces a lot of inertial work, eliminates the need to overcome the effect of the vibration spring, results in low overall vibration, no resonance, and is not easily damaged. The whole device is stable, has low energy consumption, and low maintenance costs.

[0022] In this utility model, the screen and the rotating shaft 9, and the rotating shaft 9 and the box 2 need to be sealed. The design of the limiting component can also be sealed to prevent particles from entering the sliding groove 16 and affecting the sliding effect. The size of the screen and the size of the disc 3 must ensure that there is no leakage. The above can be achieved by those skilled in the art through existing technology and is easy to understand.

[0023] The limiting component includes a sliding groove 16 and a sliding ring 5. The sliding ring 5 is fixedly installed on the bottom surface of the support ring 14. A fixing ring 17 is provided on the inner side wall of the housing 2 at the position corresponding to the support ring 14. The sliding groove 16 is opened on the upper surface of the fixing ring 17. When the support ring 14 rotates, the sliding ring 5 slides relative to the sliding groove 16, ensuring the stability of the rotation of the screen on the support ring 14 and the support rod 21, improving the rotation transmission efficiency and extending the service life.

[0024] Among them, a limiting component is provided between the disc 3 and the inner wall of the box 2. It can be the same as the limiting component structure between the support ring 14 and the inner wall of the box 2. The disc 3 can rotate relative to the box 2, and its rotation can be kept stable.

[0025] The bottoms of the first collection box 8, the second collection box 4, and the third collection box 19 are all inclined downwards toward the discharge port 22 to facilitate the discharge of the screened material.

[0026] The rotating shaft 9 is rotatably connected to the center of the top of the box 2 to ensure the stability of the rotation of the rotating shaft 9. Wear-resistant blocks 10 are set on the upper surface of the box 2 to reduce wear on the top of the box 2 and improve service life. Of course, the wear-resistant blocks 10 can also be placed higher than the feed hopper 11 to reduce axial impact and improve the stability of the rotating shaft 9.

[0027] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mining grading and screening device, characterized in that, The device includes a cylindrical shell-shaped box (2), two disc-shaped screens (3), a motor (1) capable of forward and reverse rotation and variable speed, a rotating shaft (9), a pair of support rings (14), multiple support rods (21), and a pair of limiting components. Multiple support legs (20) are provided at the bottom edge of the box (2). The motor (1) is fixedly positioned at the center of the bottom surface of the box (2). The lower end of the rotating shaft (9) rotatably penetrates the bottom surface of the box (2) and is fixedly connected to the output end of the motor (1). The upper end of the rotating shaft (9) is rotatably connected to the center of the upper surface of the box (2). A pair of limiting components... The support rings (14) are arranged vertically and are rotatably connected to the inner wall of the box (2) through a pair of limiting components. The inner rings of the pair of support rings (14) are fixedly connected to the side surface of the rotating shaft (9) through multiple pairs of support rods (21). Two screens are respectively fixedly set on the pair of support rings (14) and support rods (21), and the position where the rotating shaft (9) passes through the screen is sealed. The diameter of the screen matches the inner diameter of the box (2). A feed hopper (11) is set at the center of the upper surface of the box (2). The upper surface of the box (2) is annularly shaped at the position corresponding to the feed inlet (12). The array has multiple feed inlets (12). The upper screen is a coarse screen (7), and the lower screen is a fine screen (6). Multiple first discharge outlets (13) are evenly distributed on the side surface of the box (2) corresponding to the upper surface of the coarse screen (7). A ring-shaped first collection box (8) is set on the outer wall of the box (2) corresponding to the multiple first discharge outlets (13). Multiple second discharge outlets (15) are evenly distributed on the side surface of the box (2) corresponding to the upper surface of the fine screen (6). The outer wall of the box (2) is positioned at the positions of the multiple second discharge outlets (15). A second annular collection box (4) is provided. A disc (3) is fixedly provided on the rotating shaft (9) and below the fine screen (6). The diameter of the disc (3) matches the inner diameter of the box body (2). Multiple third discharge ports (18) are evenly provided on the side surface of the box body (2) corresponding to the position of the upper surface of the disc (3). An annular third collection box (19) is provided on the outer wall of the box body (2) corresponding to the position of the multiple third discharge ports (18). A discharge port (22) is provided at the bottom of the outer surface of the first collection box (8), the second collection box (4) and the third collection box (19).

2. The mining grading and screening device according to claim 1, characterized in that, The limiting component includes a sliding groove (16) and a sliding ring (5). The sliding ring (5) is fixedly disposed on the bottom surface of the support ring (14). A fixing ring (17) is disposed on the inner side wall of the housing (2) corresponding to the position of the support ring (14). The sliding groove (16) is opened on the upper surface of the fixing ring (17). When the support ring (14) rotates, the sliding ring (5) slides relative to the sliding groove (16).

3. A mining grading and screening device according to claim 1, characterized in that, A limiting component is provided between the disc (3) and the inner wall of the box (2), and the disc (3) can rotate relative to the box (2).

4. A mining grading and screening device according to claim 1, characterized in that, The bottoms of the first collection box (8), the second collection box (4) and the third collection box (19) are all inclined downward toward the discharge port (22).

5. A mining grading and screening device according to claim 1, characterized in that, A wear-resistant block (10) is provided at the center of the upper surface of the box (2).

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