A vibrating screen for use in open cut coal mining

Abstract

The utility model relates to vibrating screen technical field, especially a vibrating screen for open coal mining. The utility model's advantage lies in: the groove type screen mesh reciprocating vibration along the direction of up and down and left and right, like this makes the ore that enters the inside of groove type screen mesh gets screening, simultaneously through the inertia of front and back movement, can make the ore of big piece slide forward, through the slope of several slope blocking platform slide to the position of top, is stopped by the slope blocking platform, then with the continuous reciprocating movement, makes the ore of big piece move upwards along the slope blocking platform level by level, makes it gradually lift to the position of the highest place, finally discharges through the discharge slope, the screened ore falls to the inside of frame and slides away from the discharge slope one side and falls out, realizes screening, the whole groove type screen mesh discharge end is higher than the feed end in the screening process, prevents the problem that material falls too fast to screen out in time, realizes the automatic lifting discharge of material simultaneously, the screening mode is multidimensional, improves the screening efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, and in particular to a vibrating screen used in open-pit coal mines. Background Technology

[0002] In open-pit coal mining operations, efficient and environmentally friendly material handling equipment is crucial. Vibrating screens, as core screening equipment, utilize vibration to screen coal and associated ores. However, current vibrating screens still face the following problems in practical use:

[0003] Most vibrating screens currently use inclined screens to allow materials to slide down automatically and complete the screening process. However, due to the limited screening speed of the screen, when there is a lot of material, some ores are not screened out and are swept away by large pieces of ore and slide down to the bottom cleaning position, resulting in some ores not being fully screened. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a vibrating screen for open-pit coal mining, which effectively solves the deficiencies of the prior art.

[0005] The objective of this utility model is achieved through the following technical solution: A vibrating screen used in open-pit coal mines includes a plurality of rotating shafts rotatably connected to the middle of both sides of the inner wall of the frame. Each of the rotating shafts has a connecting lug fixedly connected to one end. Each of the connecting lugs has a connecting shaft rotatably connected to the side away from the rotating shaft. A trough-shaped screen is fixedly connected to one end of each of the connecting shafts. A plurality of inclined baffles are fixedly connected to the inner wall of the trough-shaped screen, and the inclined baffles are evenly distributed on the inner wall of the trough-shaped screen. A third support plate is fixedly connected to both ends of the bottom surface of the frame. One end of the trough-shaped screen is a closed structure, and the other end of the trough-shaped screen is fixedly connected to a discharge ramp. The discharge ramp and the trough-shaped screen... The internal components are interconnected. One of the two third support plates, located near the unloading ramp, is higher than the other. Several second support plates are fixedly connected to the top of one side of the outer wall of the frame. A drive shaft is rotatably connected to the middle of the several second support plates. Several drive bevel gears are fixedly connected to the outer wall of the drive shaft. One end of several rotating shafts located near the drive bevel gears is fixedly connected to a driven bevel gear. The drive bevel gears mesh with the driven bevel gears respectively. A drive motor is fixedly connected to one end of the frame. The output end of the drive motor is fixedly connected to one end of the drive shaft. The height of the trough-shaped screen near the unloading ramp is higher than the height of the other end.

[0006] Preferably, in any of the above schemes, the top of the frame is fixedly connected to both sides of the end away from the unloading slope, and the top of the two first support plates is fixedly connected to the feed hopper. The position of the bottom output end of the feed hopper corresponds to the position of one end inside the trough screen.

[0007] The technical effect achieved by adopting the above solution is that the added material can be conveniently and accurately conveyed to the bottom of the inner wall of the trough screen through the feeding hopper.

[0008] Preferably, in any of the above embodiments, the top of the feed hopper has a funnel-shaped structure, the width of the bottom outlet of the feed hopper is adapted to the width of the inner wall of the trough screen, and the position of the bottom outlet of the feed hopper is within the range of the trough screen's back-and-forth movement during vibration.

[0009] The technical effect achieved by adopting the above solution is that the output end of the feed hopper is always aligned with the inner wall of the trough screen, preventing the trough screen from detaching from the feed hopper during movement and causing material to fall out.

[0010] Preferably, in any of the above embodiments, the length of the trough screen matches the length of the frame, the unloading ramp extends outside the frame, the bottom surface of the trough screen is higher than the bottom surface of the inner wall of the frame, the width of the trough screen is less than the width of the inner wall of the frame, and the distance between the bottom surface of the trough screen and the bottom surface of the inner wall of the frame is greater than the length of the connecting lug.

[0011] The technical effect achieved by adopting the above solution is to prevent the trough screen from contacting and interfering with the bottom surface of the inner wall of the frame during the reciprocating screening process, while ensuring that there is enough space at the bottom for material discharge.

[0012] Preferably, in any of the above schemes, a protective cover plate is fixedly connected to the top surface of several second support plates, and the protective cover plate can completely cover the top of several driving bevel gears and several driven bevel gears.

[0013] The technical effect achieved by adopting the above solution is that the protective cover can effectively block the gravel and prevent it from getting stuck between the gears.

[0014] This utility model has the following advantages:

[0015] 1. The vibrating screen used in this open-pit coal mine is driven by a drive motor that rotates the drive shaft, which in turn drives several drive bevel gears to rotate synchronously. Through the transmission of the rotating shaft, connecting lugs, and connecting shaft, the trough screen vibrates back and forth in the up, down, left, and right directions. This allows the ore entering the trough screen to be screened. At the same time, due to the inertia of the back and forth motion, large pieces of ore can slide forward and slide to the top position through the inclined surfaces of the several inclined baffles, where they are blocked. Then, with the continuous reciprocating motion, the large pieces of ore move upward step by step along the inclined baffles, gradually rising to the highest position, and finally being discharged through the discharge slope. The screened ore falls into the machine frame and slides away from the discharge slope, thus achieving screening. During the screening process, the discharge end of the entire trough screen is higher than the feed end, preventing the material from sliding down too quickly and not being screened in time. At the same time, it realizes the automatic lifting and discharge of the material.

[0016] 2. The vibrating screen used in this open-pit coal mine reciprocates in the up-down and left-right directions through a trough-shaped screen mesh, realizing up-down and back-and-forth screening, with multiple screening methods to improve screening efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0020] In the diagram: 1-Frame, 2-Trough-shaped screen, 3-Sloping baffle, 4-Discharge ramp, 5-First support plate, 6-Feed hopper, 7-Second support plate, 8-Drive shaft, 9-Drive bevel gear, 10-Drive motor, 11-Third support plate, 12-Protective cover, 13-Rotating shaft, 14-Driven bevel gear, 15-Connecting lug, 16-Connecting shaft. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0022] like Figures 1 to 3As shown, a vibrating screen used in open-pit coal mines includes a frame 1 with several rotating shafts 13 rotatably connected to the middle of both sides of its inner wall. Each rotating shaft 13 has a connecting lug 15 fixedly connected to one end. Each connecting lug 15 has a connecting shaft 16 rotatably connected to the side away from the rotating shaft 13. A trough-shaped screen 2 is fixedly connected to one end of each connecting shaft 16. Several inclined baffles 3 are fixedly connected to the inner wall of the trough-shaped screen 2, and are evenly distributed. Third support plates 11 are fixedly connected to both ends of the bottom surface of the frame 1. One end of the trough-shaped screen 2 is a closed structure, and the other end is fixedly connected to a discharge ramp 4, which communicates with the interior of the trough-shaped screen 2. Of the two third support plates 11, the one closer to the unloading ramp 4 is higher than the other. Several second support plates 7 are fixedly connected to the top of one side of the outer wall of the frame 1. The middle of the several second support plates 7 is rotatably connected to a drive shaft 8. Several drive bevel gears 9 are fixedly connected to the outer wall of the drive shaft 8. One end of several rotating shafts 13 close to the several drive bevel gears 9 is fixedly connected to a driven bevel gear 14. The several drive bevel gears 9 are respectively meshed with the several driven bevel gears 14. A drive motor 10 is fixedly connected to one end of the frame 1. The output end of the drive motor 10 is fixedly connected to one end of the drive shaft 8. The height of the trough screen 2 at the end closer to the unloading ramp 4 is higher than the height at the other end.

[0023] As an optional technical solution of this utility model: the top of the frame 1 is fixedly connected to both sides of the end away from the unloading slope 4. The top of the two first support plates 5 are fixedly connected to the feed hopper 6. The position of the bottom output end of the feed hopper 6 corresponds to the position of one end inside the trough screen 2. The feed hopper 6 can conveniently feed the added material and accurately transport it to the bottom of the inner wall of the trough screen 2.

[0024] As an optional technical solution of this utility model: the top of the feed hopper 6 is a funnel-shaped structure, the width of the bottom outlet of the feed hopper 6 is adapted to the width of the inner wall of the trough screen 2, and the position of the bottom outlet of the feed hopper 6 is within the range of the back and forth movement of the trough screen 2 during vibration, so that the output end of the feed hopper 6 is always aligned with the inner wall of the trough screen 2, preventing the trough screen 2 from detaching from the feed hopper 6 during movement and causing the material to fall.

[0025] As an optional technical solution of this utility model: the length of the trough screen 2 is matched with the length of the frame 1, the unloading ramp 4 extends outside the frame 1, the bottom surface of the trough screen 2 is higher than the bottom surface of the inner wall of the frame 1, the width of the trough screen 2 is less than the width of the inner wall of the frame 1, and the distance between the bottom surface of the trough screen 2 and the bottom surface of the inner wall of the frame 1 is greater than the length of the connecting lug 15, thereby preventing the trough screen 2 from contacting and interfering with the bottom surface of the inner wall of the frame 1 during the reciprocating screening process, while leaving enough space at the bottom for material discharge.

[0026] As an optional technical solution of this utility model: a protective cover plate 12 is fixedly connected to the top surface of several second support plates 7. The protective cover plate 12 can completely cover the top of several driving bevel gears 9 and several driven bevel gears 14. The protective cover plate 12 can effectively block the gravel and prevent it from getting stuck between the gears.

[0027] The working process of this utility model is as follows: When the user uses it...

[0028] 1) The drive motor 10 drives the drive shaft 8 to rotate, which in turn drives a number of drive bevel gears 9 to rotate, which in turn drives a number of driven bevel gears 14 to rotate synchronously;

[0029] 2) The trough screen 2 is driven to vibrate back and forth in the up, down and left and right directions by the rotating shaft 13, connecting ear 15 and connecting shaft 16, so that the ore entering the trough screen 2 is screened.

[0030] 3) At the same time, through the inertia of the forward and backward movement, large pieces of ore can slide forward and slide to the top position through the inclined surfaces of several inclined baffles 3, where they are blocked by the inclined baffles 3. Then, with the continuous reciprocating motion, large pieces of ore move upward along the inclined baffles 3 one level at a time, gradually raising them to the highest position, and finally being discharged through the unloading inclined slope 4.

[0031] 4) The screened ore falls into the machine frame 1 and slides out to the side away from the unloading slope 4, thus achieving screening.

[0032] In summary, this invention uses a drive motor 10 to drive a drive shaft 8 to rotate, which in turn drives several drive bevel gears 9 to rotate, causing several driven bevel gears 14 to rotate synchronously. This, through the rotation shaft 13, connecting lug 15, and connecting shaft 16, drives the trough-shaped screen 2 to vibrate reciprocally in the up-down and left-right directions. This allows the ore entering the trough-shaped screen 2 to be screened. Simultaneously, due to the inertia of the forward and backward motion, large pieces of ore can slide forward, sliding to the top position via the inclined surfaces of several ramps 3, where they are blocked by the ramps 3. Then, with continuous... The reciprocating motion causes large pieces of ore to move upwards step by step along the inclined baffle 3, gradually raising them to the highest position, and finally discharging them through the discharge inclined slope 4. The screened ore falls into the machine frame 1 and slides out to the side away from the discharge inclined slope 4, thus achieving screening. During the screening process, the discharge end of the entire trough screen 2 is higher than the feed end, preventing the material from sliding down too quickly and not being screened out in time. At the same time, it realizes the automatic lifting and discharge of the material. By reciprocating the trough screen 2 in the up, down, left, and right directions, it realizes up and down screening as well as back and forth screening, with multiple screening methods, improving screening efficiency.

[0033] 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 vibrating screen for use in open cut coal mining, characterised in that: The frame (1) has several rotating shafts (13) rotatably connected to the middle of both sides of its inner wall. Each of the rotating shafts (13) has a connecting lug (15) fixedly connected to one end. Each of the connecting lugs (15) has a connecting shaft (16) rotatably connected to the side away from the rotating shaft (13). Each of the connecting shafts (16) has a trough-shaped screen (2) fixedly connected to one end. The inner wall of the trough-shaped screen (2) has several inclined baffles (3) fixedly connected. The inclined baffles (3) are evenly distributed on the inner wall of the trough-shaped screen (2). The bottom surfaces of the frame (1) have two fixedly connected third support plates (11). One end of the trough-shaped screen (2) is a closed structure. The other end of the trough-shaped screen (2) is fixedly connected to a discharge ramp (4). The discharge ramp (4) is connected to the interior of the trough-shaped screen (2). The two third support plates... The height of one plate (11) near the unloading ramp (4) is higher than that of the other. Several second support plates (7) are fixedly connected to the top of one side of the outer wall of the frame (1). The middle of several second support plates (7) is rotatably connected to a drive shaft (8). Several drive bevel gears (9) are fixedly connected to the outer wall of the drive shaft (8). One end of several rotating shafts (13) near the side of several drive bevel gears (9) is fixedly connected to a driven bevel gear (14). Several drive bevel gears (9) are meshed with several driven bevel gears (14). One end of the frame (1) is fixedly connected to a drive motor (10). The output end of the drive motor (10) is fixedly connected to one end of the drive shaft (8). The height of the trough screen (2) near the unloading ramp (4) is higher than that of the other end.

2. The vibrating screen used in open-pit coal mining according to claim 1, characterized in that: The top of the frame (1) is fixedly connected to two sides of the end away from the unloading ramp (4). The top of the two first support plates (5) is fixedly connected to the feed hopper (6). The position of the bottom output end of the feed hopper (6) corresponds to the position of one end inside the trough screen (2).

3. A vibrating screen for use in open cut coal mining as claimed in claim 2 characterised in that: The top of the feed hopper (6) is a funnel-shaped structure. The width of the bottom outlet of the feed hopper (6) is adapted to the width of the inner wall of the trough screen (2). The position of the bottom outlet of the feed hopper (6) is within the range of the trough screen (2) moving back and forth during vibration.

4. A vibrating screen for use in open cut coal mining as claimed in claim 1 characterised in that: The length of the trough screen (2) is matched with the length of the frame (1). The unloading ramp (4) extends outside the frame (1). The bottom surface of the trough screen (2) is higher than the bottom surface of the inner wall of the frame (1). The width of the trough screen (2) is smaller than the width of the inner wall of the frame (1). The distance between the bottom surface of the trough screen (2) and the bottom surface of the inner wall of the frame (1) is greater than the length of the connecting lug (15).

5. A vibrating screen used in open-pit coal mining according to claim 1, characterized in that: A protective cover plate (12) is fixedly connected to the top surface of several second support plates (7), and the protective cover plate (12) can completely cover the top of several driving bevel gears (9) and several driven bevel gears (14).

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