A vibrating screening device in a mineral extraction operation

Abstract

The utility model relates to ore screening technical field discloses a vibrating screening device in ore mining operation, including support frame, the support frame upper surface fixedly connected with support plate, support frame upper surface one side near support plate one side fixedly connected with slide rail, the slide rail outer wall has the screening box through the roller sliding connection, the screening mechanism is installed in the screening box inside, the screening box outer wall one side fixedly connected with T type board, the support frame upper surface outer wall other side fixedly connected with the feeding hopper, the support plate upper surface is equipped with the anti -blocking mechanism. In the utility model, after motor starts, drives the screening box vibration through transmission assembly, simultaneously links rubber block high -frequency impact feeding hopper. This design has realized the double function of screening and anti -blocking with single power source, effectively solved the difficult problem that high humidity, sticky ore is jammed in the feeding hopper, ensures the smooth unloading, improves the adaptability of the device to complex material.

Description

Technical Field

[0001] This utility model relates to the field of ore screening technology, and in particular to a vibrating screening device used in ore mining operations. Background Technology

[0002] Vibrating screening is a crucial basic operation in ore mining and subsequent mineral processing. It utilizes the periodic high-frequency vibration of the screen box to loosen, stratify, and pass the ore through the screen surface, thus separating the crushed ore into different grades according to particle size to meet the process requirements of subsequent crushing, grinding, and beneficiation processes, or as the final aggregate. The performance and operational stability of the vibrating screening device directly affect the processing capacity of the entire production line and the quality of the final product.

[0003] In existing conventional technologies, vibrating screening devices mainly consist of a screen box, vibrator, spring support system, and drive motor. Their working principle is generally as follows: the motor drives the vibrator (usually an eccentric block or eccentric shaft type) mounted on the screen box to rotate at high speed via a transmission mechanism (such as a transmission belt). The periodic excitation force generated by the vibrator causes the entire screen box to vibrate continuously along a specific trajectory (such as a straight line or a circle). Material is fed in through the upper feed hopper and, under the action of vibration, is thrown and advanced on the inclined screen surface. Particles smaller than the screen aperture size pass through the screen and become undersize, while particles larger than the screen aperture size remain on the screen surface and become oversize. Finally, they are discharged from different discharge ports, achieving material grading.

[0004] However, the aforementioned traditional vibrating screen devices have significant limitations when processing certain specific materials. In ore mining operations, ores with high moisture content or inherent stickiness (such as clayey ores) are frequently encountered. When these materials are fed through the hopper, their poor flowability causes them to easily adhere to the inner wall of the hopper, gradually accumulating and hardening. Under the combined effect of vibration and the material's own pressure, a stable material arch may even form at the hopper outlet, leading to poor or complete blockage of the material flow. Once this occurs, it not only interrupts the continuity of the screening operation and significantly reduces processing efficiency, but also requires operators to manually clear or remove the material. This not only increases labor intensity but also poses significant safety hazards, seriously affecting the adaptability of the device to complex operating conditions and the reliability of production. Therefore, a vibrating screen device for ore mining operations is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a vibrating screen device for ore mining operations. It aims to improve the situation where, when traditional vibrating screens process high-moisture or sticky ores, materials easily adhere and arch in the feed hopper, leading to poor material flow or even blockage. This interrupts production, reduces efficiency, requires manual cleaning, increases labor intensity and safety hazards, and seriously affects equipment reliability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibrating screening device for ore mining operations, comprising a support frame, a support plate fixedly connected to the upper surface of the support frame, a slide rail fixedly connected to one side of the upper surface of the support frame near the support plate, a screening box slidably connected to the outer wall of the slide rail via rollers, a screening mechanism installed inside the screening box, a T-shaped plate fixedly connected to one side of the outer wall of the screening box, a feed hopper fixedly connected to the other side of the outer wall of the upper surface of the support frame, and an anti-clogging mechanism installed on the upper surface of the support plate;

[0007] The anti-clogging mechanism includes a limiting rod, the lower end of which is fixedly connected to the outer wall of the support frame near the feed hopper. A connecting block is slidably connected to the outer wall of the limiting rod, and a rubber block is fixedly connected to one side of the outer wall of the connecting block. The upper surface of the rubber block abuts against the lower surface of the feed hopper. A motor is fixedly connected to the upper surface of the support plate, and a rotating shaft is rotatably connected to one side of the outer wall of the support frame. A transmission belt is connected between the output end of the motor and the rotating shaft, and a transmission component is installed at one end of the rotating shaft.

[0008] As a further description of the above technical solution:

[0009] The transmission assembly includes an eccentric wheel, which is fixedly connected to one end of a rotating shaft. An eccentric shaft is fixedly connected to one side of the outer wall of the eccentric wheel. The outer wall of the eccentric shaft is slidably connected to the inner wall of a T-shaped plate. A rotating plate is rotatably connected to the outer wall of the eccentric shaft near the outer wall of the T-shaped plate. A connecting rod is rotatably connected to one side of the outer wall of the rotating plate. The outer wall of the connecting rod is rotatably connected to the lower surface of a rubber block.

[0010] As a further description of the above technical solution:

[0011] The screening mechanism includes a screening plate one, the outer wall of which is fixedly connected to the lower side of the inner wall of the screening box, a lower discharge hopper fixedly connected to one side of the outer wall of the screening box, a screening plate two fixedly connected to the upper side of the inner wall of the screening box, a guide plate fixedly connected to the upper surface of the screening plate two, and an upper discharge hopper fixedly connected to the other side of the outer wall of the screening box.

[0012] As a further description of the above technical solution:

[0013] A receiving box is provided below the screening box, and an extension pipe is fixedly connected to the lower surface of the screening box.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the extension tube is slidably connected to the upper side of the inside of the receiving box, and a guide slope is fixedly connected inside the receiving box.

[0016] As a further description of the above technical solution:

[0017] A transmission pipe is fixedly connected to the outer wall of the receiving box near the lower part of the guide slope, and a screw conveyor is installed inside the transmission pipe.

[0018] As a further description of the above technical solution:

[0019] The lower discharge hopper is located on a lower side near the screening plate, and the upper discharge hopper is located on a lower side near the guide plate.

[0020] As a further description of the above technical solution:

[0021] The internal aperture of the first sieve plate is smaller than that of the second sieve plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, when the motor starts, its power, through the transmission belt and the transmission components on the rotating shaft, not only drives the screening box to vibrate, but also drives the connecting block to reciprocate along the limit rod through the linkage mechanism composed of the eccentric wheel, eccentric shaft, rotating plate and connecting rod, thereby causing the rubber block to continuously impact or vibrate the feed hopper at a high frequency. A single power source achieves dual functions, ensuring that materials can smoothly enter the screening box. This solves the problem of traditional vibrating screens easily sticking and arching at the feed hopper when processing high-moisture or sticky ores, leading to poor material discharge or even blockage, thus improving the device's adaptability to complex materials.

[0024] 2. In this invention, after the ore enters, the largest particle size is first separated by the upper screening plate two, and then the medium particle size is separated by the lower screening plate one, achieving three-stage separation. Simultaneously, the finest dust generated during screening passes through all the screen plates and falls directly into the collection box below via an extension pipe, effectively preventing dust from escaping and causing environmental pollution. The guide slope and screw conveyor inside the collection box automatically collect and discharge the dust, improving the level of automation and environmental performance, facilitating the unified recycling of fine materials, and increasing resource utilization. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a vibrating screening device for ore mining operations proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the receiving box part of a vibrating screening device for ore mining operations proposed in this utility model.

[0027] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0028] Figure 4 This is a schematic diagram of the guide plate portion of a vibrating screening device for ore mining operations proposed in this utility model.

[0029] Legend:

[0030] 1. Support frame; 2. Support plate; 3. Slide rail; 4. Screening box; 5. Screening plate one; 6. Lower discharge hopper; 7. Screening plate two; 8. Guide plate; 9. Upper discharge hopper; 10. T-shaped plate; 11. Motor; 12. Rotating shaft; 13. Transmission belt; 14. Eccentric wheel; 15. Eccentric shaft; 16. Feed hopper; 17. Rotating plate; 18. Connecting rod; 19. Rubber block; 20. Connecting block; 21. Limiting rod; 22. Extension tube; 23. Receiving box; 24. Guide slope; 25. Transmission pipe; 26. Screw conveyor. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 - Figure 4This utility model provides an embodiment of a vibrating screening device for ore mining operations, comprising a support frame 1 serving as the foundation for the entire machine. A support plate 2 for mounting power and transmission components is fixedly connected to the upper surface of the support frame 1. A slide rail 3 for guiding a screening box 4 is fixedly connected to one side of the upper surface of the support frame 1 near the support plate 2. The screening box 4 for performing screening operations is slidably connected to the outer wall of the slide rail 3 via rollers. A screening mechanism for material grading is installed inside the screening box 4. A T-shaped plate 10 for transmitting driving force is fixedly connected to one side of the outer wall of the screening box 4. A feed hopper 16 for receiving ore to be screened is fixedly connected to the other side of the outer wall of the upper surface of the support frame 1. An anti-blocking mechanism for preventing material blockage at the feed hopper 16 is installed on the upper surface of the support plate 2. The anti-blocking mechanism includes a limiting rod 21 that serves as a guide and limiter. The lower end of the limiting rod 21 is fixedly connected to the outer wall of the support frame 1 near the feed hopper 16. A sliding connection block 20 is provided, and a rubber block 19 that applies impact vibration to the feed hopper 16 is fixedly connected to one side of the outer wall of the connecting block 20. The upper surface of the rubber block 19 abuts against the lower surface of the feed hopper 16. A motor 11 that provides power to the whole machine is fixedly connected to the upper surface of the support plate 2. A main drive shaft 12 is rotatably connected to one side of the outer wall of the support frame 1. The output end of the motor 11 is connected to the shaft 12 via a drive belt 13. One end of the shaft 12 is equipped with a mechanism for motion conversion and distribution. The transmission assembly includes an eccentric wheel 14 fixedly connected to one end of the rotating shaft 12. An eccentric shaft 15 is fixedly connected to one side of the outer wall of the eccentric wheel 14. The outer wall of the eccentric shaft 15 is slidably connected to the inner wall of the T-shaped plate 10 to drive the screening box 4. A rotating plate 17 is rotatably connected to the outer wall of the eccentric shaft 15 near the outer wall of the T-shaped plate 10. A connecting rod 18 is rotatably connected to one side of the outer wall of the rotating plate 17. The outer wall of the connecting rod 18 is rotatably connected to the lower surface of the rubber block 19 to drive the anti-clogging mechanism.

[0033] Specifically, when the motor 11 starts, the power is transmitted to the rotating shaft 12 via the transmission belt 13, driving the eccentric wheel 14 to rotate. The eccentric wheel 14 directly drives the T-shaped plate 10 through the eccentric shaft 15, thereby causing the entire screening box 4 to generate continuous reciprocating vibration on the slide rail 3 for material screening. At the same time, the movement of the eccentric shaft 15 also drives the connecting block 20, carrying the rubber block 19, to move up and down along the guide of the limiting rod 21 through the linkage mechanism composed of the rotating plate 17 and the connecting rod 18, applying high-frequency impact to the bottom of the feed hopper 16.

[0034] Reference Figure 1 - Figure 4The screening mechanism includes a screening plate 5 for secondary fine screening, the outer wall of which is fixedly connected to the lower side of the inner wall of the screening box 4. A lower discharge hopper 6 for discharging material from the screening plate 5 is fixedly connected to one side of the outer wall of the screening box 4. A second screening plate 7 for primary coarse screening is fixedly connected to the upper side of the inner wall of the screening box 4. A guide plate 8 for guiding the material on the screen is fixedly connected to the upper surface of the second screening plate 7. An upper discharge hopper 9 for discharging material from the second screening plate 7 is fixedly connected to the other side of the outer wall of the screening box 4. A receiving box 23 for collecting the finest dust and preventing its leakage is provided below the screening box 4. An extension tube for guiding dust is fixedly connected to the lower surface of the screening box 4. The outer wall of the extended pipe 22 is slidably connected to the upper side inside the receiving box 23, forming a flexible connection that adapts to vibration. The receiving box 23 is fixedly connected to a guide slope 24 for collecting dust. The outer wall of the receiving box 23 is fixedly connected to a transmission pipe 25 for discharging dust on the side near the lower part of the guide slope 24. The transmission pipe 25 is equipped with a screw conveyor 26 for automatic material discharge. In order to facilitate the smooth discharge of materials under gravity and vibration, the lower discharge hopper 6 is located on the side near the lower part of the screening plate 1 5, and the upper discharge hopper 9 is located on the side near the lower part of the guide plate 8. In order to achieve graded screening, the internal aperture of the screening plate 1 5 is smaller than the internal aperture of the screening plate 2 7.

[0035] Specifically, after the ore enters the screening box 4, the largest particle size oversize is first separated by the upper screening plate 7. This material is discharged from the upper discharge hopper 9 under the guidance of the guide plate 8. The material passing through the screening plate 7 continues to fall to the screening plate 5, where the larger particles are retained and discharged from the lower discharge hopper 6 as medium-sized oversize. The finest dust-like material passes through both screening plates and falls directly into and is sealed in the lower receiving box 23 through the extension pipe 22. The dust in the box is collected by the guide slope 24 and automatically discharged by the screw conveyor 26.

[0036] Working principle: When the device is needed, the ore to be screened is first fed into the equipment through the feed hopper 16. The operator starts the motor 11, which drives the rotating shaft 12 to rotate via the transmission belt 13. The rotating shaft 12 then drives the eccentric wheel 14 at its end to rotate. The rotation of the eccentric wheel 14 acts directly on the T-shaped plate 10 fixed to the screening box 4 through the eccentric shaft 15. Due to the eccentric effect, the screening box 4 generates reciprocating vibration on the slide rail 3. At the same time, the movement of the eccentric shaft 15 is also transmitted to the rubber block 19 through the rotating plate 17 and the connecting rod 18, causing it to vibrate the bottom of the feed hopper 16 at high frequency to prevent material blockage.

[0037] Secondly, during the continuous vibration of the screening box 4, the ore entering from the feed hopper 16 first falls onto the upper screening plate 7. Materials with a particle size larger than the screen openings are intercepted and discharged from the upper discharge hopper 9 under the action of the guide plate 8. Smaller particles pass through the screening plate 7 and fall onto the lower screening plate 5. Because the screening plate 5 has a smaller aperture, medium-sized materials are intercepted and discharged from the lower discharge hopper 6. The finest dust-like materials pass through the screening plate 5 and fall into the lower collection box 23 through the extension pipe 22 at the bottom of the screening box 4. The dust in the collection box 23 is collected at the transmission pipe 25 by the guide slope 24 and continuously transported out by the internal screw conveyor 26, thus completing the three-stage screening of the ore and the collection of dust.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibrating screening device for ore mining operations, characterized in that, Includes a support frame (1), on which a support plate (2) is fixedly connected, and a slide rail (3) is fixedly connected to one side of the upper surface of the support frame (1) near the support plate (2). A screening box (4) is slidably connected to the outer wall of the slide rail (3) via rollers. A screening mechanism is installed inside the screening box (4). A T-shaped plate (10) is fixedly connected to one side of the outer wall of the screening box (4). A feed hopper (16) is fixedly connected to the other side of the outer wall of the upper surface of the support frame (1). An anti-clogging mechanism is installed on the upper surface of the support plate (2). The anti-blocking mechanism includes a limiting rod (21), the lower end of which is fixedly connected to the outer wall of the support frame (1) near the feed hopper (16). A connecting block (20) is slidably connected to the outer wall of the limiting rod (21). A rubber block (19) is fixedly connected to one side of the outer wall of the connecting block (20). The upper surface of the rubber block (19) abuts against the lower surface of the feed hopper (16). A motor (11) is fixedly connected to the upper surface of the support plate (2). A rotating shaft (12) is rotatably connected to one side of the outer wall of the support frame (1). A transmission belt (13) is connected between the output end of the motor (11) and the rotating shaft (12). A transmission component is installed at one end of the rotating shaft (12).

2. The vibrating screening device for ore mining operations according to claim 1, characterized in that: The transmission assembly includes an eccentric wheel (14), which is fixedly connected to one end of a rotating shaft (12). An eccentric shaft (15) is fixedly connected to one side of the outer wall of the eccentric wheel (14). The outer wall of the eccentric shaft (15) is slidably connected to the inner wall of a T-shaped plate (10). A rotating plate (17) is rotatably connected to the outer wall of the eccentric shaft (15) near the outer wall of the T-shaped plate (10). A connecting rod (18) is rotatably connected to one side of the outer wall of the rotating plate (17). The outer wall of the connecting rod (18) is rotatably connected to the lower surface of a rubber block (19).

3. The vibrating screening device for ore mining operations according to claim 1, characterized in that: The screening mechanism includes a screening plate (5), the outer wall of which is fixedly connected to the lower side of the inner wall of the screening box (4), a lower discharge hopper (6) is fixedly connected to one side of the outer wall of the screening box (4), a screening plate (7) is fixedly connected to the upper side of the inner wall of the screening box (4), a guide plate (8) is fixedly connected to the upper surface of the screening plate (7), and an upper discharge hopper (9) is fixedly connected to the other side of the outer wall of the screening box (4).

4. The vibrating screening device for ore mining operations according to claim 1, characterized in that: A receiving box (23) is provided below the screening box (4), and an extension pipe (22) is fixedly connected to the lower surface of the screening box (4).

5. A vibrating screening device for ore mining operations according to claim 4, characterized in that: The outer wall of the extension tube (22) is slidably connected to the upper side of the inside of the receiving box (23), and a guide slope (24) is fixedly connected inside the receiving box (23).

6. A vibrating screen device for ore mining operations according to claim 5, characterized in that: The receiving box (23) has a transmission pipe (25) fixedly connected to the side of the outer wall near the lower part of the guide slope (24), and a screw conveyor (26) is installed inside the transmission pipe (25).

7. A vibrating screening device for ore mining operations according to claim 3, characterized in that: The lower discharge hopper (6) is located on the side near the lower part of the screening plate (5), and the upper discharge hopper (9) is located on the side near the lower part of the guide plate (8).

8. A vibrating screen device for ore mining operations according to claim 3, characterized in that: The internal aperture of the first screening plate (5) is smaller than that of the second screening plate (7).

Images