Crusher with anti-blocking function for open pit coal mine

Abstract

The invention relates to the technical field of crushers, and discloses a crusher with an anti-blocking function for an open pit coal mine, the crusher comprises a machine body, a crushing cavity is arranged in the machine body, a discharge port is arranged at the bottom of the crushing cavity, and a sieve plate is arranged in the discharge port; two crushing rollers are rotationally connected into the crushing cavity, two transmission gears which are meshed with each other are installed on the outer wall of the machine body, and the two transmission gears are fixedly connected with one ends of the two crushing rollers correspondingly; the double crushing rollers and the transmission gear are arranged in the machine body to drive reverse crushing, the rotary cleaning mechanism composed of the annular plate, the cleaning plate and the gear shaft is arranged in the crushing cavity, along with crushing of coal briquettes, the cleaning plate can drive coal accumulated on the sieve plate to move, the coal materials accumulated on the sieve plate are thrown into a crushing area for the second time, the coal briquette crushing effect is improved, and the coal briquette crushing efficiency is improved. Meanwhile, the phenomenon that the sieve plate is blocked due to excessive accumulation of coal on the sieve plate is reduced, and practicability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of crushers, and specifically to a crusher with a anti-blocking function for open-pit coal mines. Background Art

[0002] During the process of open-pit coal mine exploitation, large-scale mining crushers, as the core equipment for primary material processing, first crush the large chunks of coal mined and then transport and process them, which can not only reduce transportation costs but also improve transfer efficiency.

[0003] However, in the daily production process of existing crushers for coal mine exploitation, if the feeding material flow is too large or the material cannot be discharged in time after crushing, it will accumulate in the inner cavity of the crusher, causing the crusher to be blocked. When the crusher is blocked, workers need to spend a lot of time cleaning it, which increases the labor intensity of workers and at the same time increases the failure rate of the equipment, thus affecting the crushing production efficiency and the service life of the crusher equipment. There are also some crushers that are provided with sieve plates at the discharge ports to achieve the screening of coal, but at the same time, it also increases the possibility of blockage. Therefore, a crusher with a anti-blocking function for open-pit coal mines is proposed. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a crusher with a anti-blocking function for open-pit coal mines to solve the problems in the background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A crusher with a anti-blocking function for open-pit coal mines, including a machine body. A crushing cavity is provided inside the machine body. A discharge port is provided at the bottom of the crushing cavity, and a sieve plate is installed in the discharge port. Two crushing rollers are rotatably connected in the crushing cavity. Two meshing transmission gears are installed on the outer wall of the machine body, and the two transmission gears are respectively fixedly connected to one end of the two crushing rollers. A first motor is installed on the outer wall of the machine body and is drivingly connected to one of the transmission gears through a belt. Ring plates are rotatably connected to both sides inside the crushing cavity. A plurality of cleaning plates are fixedly connected between the two ring plates. A tooth groove is formed on the outer wall of one of the ring plates. A gear shaft that meshes with the tooth groove is rotatably connected in the machine body. One of the transmission gears drives the gear shaft through a belt.

[0006] Preferably, the sieve plate penetrates through the machine body and is slidably connected thereto. A second motor is installed on the side wall of the machine body. The output end of the second motor is fixedly connected to a turntable. An eccentric rod is fixedly connected to the upper end surface of the turntable. A sliding sleeve is fixedly connected to the bottom surface of the sieve plate. The upper end of the eccentric rod is slidably connected inside the sliding sleeve.

[0007] Preferably, symmetrically distributed arc-shaped baffles are fixedly connected inside the crushing cavity, and the arc-shaped baffles and the inner wall of the crushing cavity form a coal material lifting channel.

[0008] Preferably, two guiding inclined plates are fixedly connected to the top of the body, and the two guiding inclined plates are respectively located directly above the two arc-shaped baffles.

[0009] Preferably, two symmetrically distributed arc grooves are formed on one side of the inner wall of the body, arc holes corresponding to the arc grooves are formed on the outer wall of the body, a cleaning brush is slidably connected between the arc grooves and the arc holes, one end of the cleaning brush is fixedly connected to an adjusting rod, and one end of the adjusting rod penetrates outside the arc hole.

[0010] Preferably, a fixing block is fixedly connected to the outer wall of the body, a threaded rod is rotatably connected inside the fixing block, an adjusting strip is threadedly connected to the upper end of the threaded rod, sliding openings are formed at both ends of the adjusting strip, and the sliding openings are sleeved on the outer wall of the adjusting rod.

[0011] Preferably, blocking strips are fixedly connected to the side walls at both ends of the cleaning brush, the blocking strips are attached to the inner wall of the body, and the multiple blocking strips respectively block the arc grooves and the arc holes.

[0012] Preferably, the inclination angle of the cleaning plate is 15° - 45°, and the bottom end thereof is in sliding contact with the surface of the sieve plate.

[0013] Preferably, a protective cover is provided outside the transmission gear and the gear shaft, and the protective cover is fixed to the outer wall of the body.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by arranging double crushing rollers in the body and driving reverse crushing by a transmission gear, a rotating cleaning mechanism composed of an annular plate, a cleaning plate and a gear shaft is arranged in the crushing cavity. As the coal block is crushed, the cleaning plate will drive the coal accumulated on the sieve plate to move, and the coal material accumulated on the sieve plate is thrown into the crushing area for the second time, improving the crushing effect of the coal block. At the same time, the phenomenon that the sieve plate is blocked due to excessive accumulation of coal on the sieve plate is reduced, improving the practicability.

[0015] The sieve plate in the present invention slides on the body. By using the drive of the second motor and the cooperation of the turntable eccentric rod and the sliding sleeve, the sieve plate can be driven to slide reciprocally on the body, so that the coal falling on the sieve plate can be quickly screened, reducing the possibility of blockage and improving the efficiency.

[0016] The present invention installs a cleaning brush with adjustable position in the crushing cavity. When there is more coal adhered to the crushing roller, the cleaning brush can be controlled to approach the crushing roller to clean the crushing roller. After cleaning, the cleaning brush can be moved away from the crushing roller to reduce wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the outer wall structure of the body of the present invention; Figure 3 is Figure 2 partial enlarged view of location A in Figure 4 Schematic diagram of the outer wall structure of the other side of the body of the present invention; Figure 5 Schematic diagram of the internal structure of the cross-section of the body of the present invention; Figure 6 Schematic diagram of the cross-sectional structure of the ring plate of the present invention; Figure 7 Schematic diagram of the internal structure of the crushing chamber of the present invention; Figure 8 is Figure 7 partial enlarged view of location B in Figure 9 Schematic diagram of the combined structure of the ring plate and the cleaning plate of the present invention; Figure 10 Schematic diagram of the structure of the cleaning brush of the present invention.

[0018] In the figure: 1, body; 2, crushing chamber; 3, crushing roller; 4, first motor; 5, transmission gear; 6, discharge port; 7, sieve plate; 8, ring plate; 9, cleaning plate; 10, tooth groove; 11, gear shaft; 12, guiding inclined plate; 13, arc-shaped baffle; 14, second motor; 15, sliding sleeve; 16, turntable; 17, eccentric rod; 18, stop bar; 19, arc groove; 20, arc hole; 21, cleaning brush; 22, adjusting rod; 23, fixing block; 24, threaded rod; 25, adjusting strip; 26, sliding opening; 27, protective cover. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1-10In the present embodiment, a crusher with anti-blocking function for open-pit coal mines includes a body 1, a crushing chamber 2 is provided in the body 1, the crushing chamber 2 is circular, a discharge port 6 is provided at the lower end of the crushing chamber 2, a screen plate 7 is installed in the discharge port 6, two crushing rollers 3 are rotatably connected in the crushing chamber 2, and two transmission gears 5 are respectively fixedly connected to one end of the two crushing rollers 3 and meshed with each other are installed on the outer wall of the body 1. A first motor 4 is installed on the outer wall of the body 1, and the first motor 4 is connected to one of the gears 5 through a belt. In a specific transmission mode, a pulley can be installed on the outer wall of the transmission gear 5, and a pulley is also installed on the output shaft of the first motor 4. The pulley is used to cooperate with the belt to realize driving, and the first motor 4 drives one of the transmission gears 5 to rotate, and the transmission gear 5 synchronously drives the other gear meshed with it to rotate in the opposite direction, and then the two crushing rollers 3 are driven to rotate in the opposite direction through the two transmission gears 5. The coal block falls between the two crushing rollers 3, and the two crushing rollers 3 crush the coal block. The crushed coal passes through the screen Plate 7 is used for screening; annular plates 8 are rotated on both sides of the inside of the crushing chamber 2, and a plurality of cleaning plates 9 for cleaning the surface of the screen plate 7 are fixedly connected between the two annular plates 8, one of which has a tooth groove 10 on the side wall of the annular plate 8, and a gear shaft 11 meshing with the tooth groove 10 is rotatably connected to the side wall of the body 1, one end of the transmission gear 5 is passed through the outside of the body 1, and one of the transmission gears 5 is connected to the gear shaft 11 through a belt. A protective cover 27 is arranged on the outside of the two transmission gears 5 and the gear shaft 11 to prevent debris from being involved therein, thereby improving safety. While the first motor 4 drives the crushing roller 3 to rotate, the gear shaft 11 drives the annular plate 8 to rotate through the tooth groove 10, thereby driving the cleaning plate 9 to rotate in the crushing chamber 2, and the cleaning plate 9 slides over the screen plate 7, driving the coal accumulated on the screen plate 7, and the cleaning plate 9 is inclined, which not only brings the coal to the top of the two crushing rollers 3 and then throws it down for secondary crushing, thereby improving the effect of coal block crushing, and at the same time reducing the phenomenon of clogging of the screen plate 7 due to excessive accumulation of coal on the screen plate 7, thereby improving practicality.

[0021] The length of the sieve plate 7 is greater than that of the machine body 1. The sieve plate 7 passes through the machine body 1 and is slidably connected thereto. A second motor 14 is installed on the side wall of the machine body 1. A turntable 16 is fixedly connected to the output end of the second motor 14. An eccentric rod 17 is fixedly connected to the upper end surface of the turntable 16. A sleeve 15 is fixedly connected to the bottom surface of one end of the sieve plate 7. The eccentric rod 17 is slidably connected in the sleeve 15. When the second motor 14 is started, the second motor 14 drives the eccentric rod 17 to rotate in a circle through the turntable 16. The eccentric rod 17 slides in the sleeve 15, and then drives the sieve plate 7 to slide back and forth in the machine body 1 through the sleeve 15, so that the coal falling on the sieve plate 7 is quickly screened from the sieve plate 7 through the movement of the sieve plate 7, thereby reducing the possibility of blockage.

[0022] Two symmetrically distributed arc-shaped baffles 13 are fixedly connected inside the crushing chamber 2. A guiding inclined plate 12 corresponding to the arc-shaped baffles 13 is provided at the inner top of the machine body 1. After the coal blocks enter the machine body 1, they will be guided by the guiding inclined plate 12 between the two arc-shaped baffles 13 to between the two crushing rollers 3 for crushing. The crushed coal falls through the gap between the lower parts of the two arc-shaped baffles 13. When the cleaning plate 9 drives the coal to rise, it will enter the channel formed between the arc-shaped baffle 13 and the crushing chamber 2. The arc-shaped baffle 13 cooperates with the cleaning plate 9 to prevent the coal from slipping until the cleaning plate 9 lifts the coal above the crushing roller 3 and slides across the arc-shaped baffle 13. At the same time, the arc-shaped baffle 13 and the guiding inclined plate 12 can also block the coal blocks that have just entered the machine body 1 from falling outside the crushing roller 3, avoiding the problem that the coal blocks fall directly without being crushed, which affects the crushing efficiency.

[0023] Two arc-shaped grooves 19 are opened on one side of the inner wall of the machine body 1. Two arc-shaped holes 20 corresponding to the arc-shaped grooves 10 are opened on the outer wall of the machine body 1. A cleaning brush 21 is slidably connected between the arc-shaped groove 19 and the arc-shaped hole 20. One end of the cleaning brush 21 is fixedly connected with an adjusting rod 22. One end of the adjusting rod 22 passes through the arc-shaped hole 20 to the outside. A fixing block 23 is fixedly connected to the outer wall of the machine body 1. A threaded rod 24 is rotatably connected inside the fixing block 23. The upper end of the threaded rod 24 passes through and is threadedly connected with an adjusting strip 25. Both ends of the adjusting strip 25 are provided with sliding openings 26. The sliding openings 26 are sleeved on the outer wall of the adjusting rod 22. By rotating the threaded rod 24, the adjusting strip 25 rises or falls, and drives the adjusting rod 22 to slide in the arc-shaped hole 20 through the sliding openings 26, thereby adjusting the position of the cleaning brush 21. After the crushing roller 3 works for a long time, coal will adhere to its surface. The adhesion of coal will affect the crushing effect on coal blocks. By making the cleaning brush 21 contact with the crushing roller 3, the crushing roller 3 rotates to clean the crushing roller 3. After the cleaning is completed, the cleaning brush 21 is moved back to keep it away from the crushing roller 3 to avoid excessive wear on the cleaning brush 21 and improve the practicability.

[0024] Blocking strips 18 are fixedly connected to the side walls at both ends of the cleaning brush 21. The blocking strips 18 are attached to the inner wall of the machine body 1 and block the arc-shaped grooves 19 and the arc-shaped holes 20. Through the blocking of the blocking strips 18, it is avoided that coal and coal blocks enter the arc-shaped grooves 19 and the arc-shaped holes 20 and cause blockage, which affects the adjustment of the cleaning brush 21, and the practicability is improved.

[0025] This crusher is designed to address the problem of material blockage in open-pit coal mines. Inside the machine body 1, there are two crushing rollers 3 and drive gears 5 that drive reverse crushing. Inside the crushing chamber 2, there is a rotating cleaning mechanism composed of a ring plate 8, an inclined cleaning plate 9, and a gear shaft 11, which throws the coal material accumulated on the sieve plate 7 into the crushing area again; the sieve plate 7 is driven by a second motor 14, a turntable 16, and an eccentric rod 17 to reciprocate and slide to accelerate screening; the guiding inclined plate 12 and the arc-shaped baffle 13 cooperate to guide the coal blocks to accurately fall, preventing uncrushed materials from leaking out; the cleaning brush 21 adjusts its position through an arc groove 19, an arc hole 20, an adjusting rod 22, and a threaded rod 24 to remove the coal adhered to the surface of the crushing roller 3, and the retaining strip 18 prevents foreign objects from entering the arc groove 19 and the arc hole 20; the overall structure is designed with linkage anti-blocking, significantly reducing the risk of blockage and improving the crushing continuity and efficiency.

Claims

1. A crusher with anti-blocking function for open-pit coal mines, comprising a body (1), characterized in that: The machine body (1) is provided with a crushing chamber (2), the bottom of the crushing chamber (2) is provided with a discharge port (6), and a screen plate (7) is installed in the discharge port (6); two crushing rollers (3) are rotatably connected in the crushing chamber (2), and two mutually meshing transmission gears (5) are installed on the outer wall of the machine body (1), and the two transmission gears (5) are respectively fixedly connected to one end of the two crushing rollers (3), and a first motor (4) is installed on the outer wall of the machine body (1) and is transmission-connected to one of the transmission gears (5) through a belt; annular plates (8) are rotatably connected to both sides of the inside of the crushing chamber (2), and a plurality of cleaning plates (9) are fixedly connected between the two annular plates (8), and a tooth groove (10) is opened on the outer wall of one of the annular plates (8), and a gear shaft (11) meshing with the tooth groove (10) is rotatably connected in the machine body (1), and one of the transmission gears (5) drives the gear shaft (11) through a belt.

2. A crusher with anti-blocking function for open-pit coal mine according to claim 1, characterized in that: The sieve plate (7) passes through the machine body (1) and is slidably connected thereto; a second motor (14) is mounted on a side wall of the machine body (1); a turntable (16) is fixedly connected to an output end of the second motor (14); an eccentric rod (17) is fixedly connected to an upper end surface of the turntable (16); a sliding sleeve (15) is fixedly connected to a bottom surface of the sieve plate (7); and an upper end of the eccentric rod (17) is slidably connected within the sliding sleeve (15).

3. The crusher with anti-blocking function for open-pit coal mine according to claim 1, characterized in that: The pulverizing chamber (2) is fixedly connected with symmetrically distributed arc-shaped baffles (13), and the arc-shaped baffles (13) and the inner wall of the pulverizing chamber (2) form a coal lifting channel.

4. A crusher with anti-blocking function for open-pit coal mine according to claim 3, characterized in that: Two guide inclined plates (12) are fixedly connected to the top of the machine body (1), and the two guide inclined plates (12) are respectively located directly above the two arc-shaped baffles (13).

5. The crusher with anti-blocking function for open-pit coal mine according to claim 1, characterized in that: One side of the inner wall of the machine body (1) is provided with two symmetrically distributed arc grooves (19), and the outer wall of the machine body (1) is provided with an arc hole (20) corresponding to the arc groove (19). A cleaning brush (21) is slidably connected between the arc groove (19) and the arc hole (20), and one end of the cleaning brush (21) is fixedly connected to an adjustment rod (22), and one end of the adjustment rod (22) extends to the outside of the arc hole (20).

6. A crusher with anti-blocking function for open-pit coal mine according to claim 5, characterized in that: The outer wall of the machine body (1) is fixedly connected to a fixing block (23), the fixing block (23) is rotatably connected to a threaded rod (24), the upper end of the threaded rod (24) is threadedly connected to an adjustment bar (25), both ends of the adjustment bar (25) are provided with sliding openings (26), and the sliding openings (26) are sleeved on the outer wall of the adjustment rod (22).

7. A crusher with anti-blocking function for open-pit coal mine according to claim 6, characterized in that: The side walls at both ends of the cleaning brush (21) are fixedly connected to blocking bars (18), the blocking bars (18) are in contact with the inner wall of the machine body (1), and a plurality of the blocking bars (18) respectively shield the arc groove (19) and the arc hole (20).

8. The crusher with anti-blocking function for open-pit coal mine according to claim 1, characterized in that: The cleaning plate (9) has an inclination angle of 15°-45°, and its bottom end is in sliding contact with the surface of the sieve plate (7).

9. The crusher with anti-blocking function for open-pit coal mine according to claim 1, characterized in that: A protective cover (27) is provided on the outside of the transmission gear (5) and the gear shaft (11), and the protective cover (27) is fixed to the outer wall of the machine body (1).

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