Coal mine screening device

Abstract

The invention discloses a coal mine screening device, wherein a separation roller, a collection hopper and a screen body are sequentially arranged in a shell cavity from top to bottom, the left and right ends of the separation roller both penetrate the shell, and eccentric wheels are sleeved on the left and right ends, and a driven pulley and a swing wheel are sleeved on the right end of the separation roller in sequence, an upper guide rod is fixedly connected to the shell at a corresponding position above the separation roller, and a lower guide rod is fixedly connected to the shell at a corresponding position below the separation roller, and the rotating rods are interlaced with the upper guide rod and the lower guide rod, the collection hopper is placed below the separation roller, and the cross section of the collection hopper is funnel-shaped, the screen body is placed below the collection hopper, the screen body is tilted, one end of the screen body is hinged in the shell cavity, and the other end of the screen body penetrates the shell, and ear seats are installed on both sides of the screen body outside the shell cavity, and brackets are hinged on the ear seats, and the brackets are hinged to the connecting rods, and the connecting rods are hinged to the swing rods. The advantages of the invention are: easy classification, anti-blocking, high working efficiency and avoidance of damage to the screen body.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine screening, and in particular relates to a coal mine screening device. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, people generally choose to dig tunnels underground to mine coal, which is an underground coal mine. When the coal seam is very close to the surface, people generally choose to directly strip the surface soil layer to mine coal, which is an open-pit coal mine. Most of my country's coal mines are underground coal mines. Most of the existing coal mine screening devices have single performance. When screening the ore, the ore is directly placed above the screen. Large ore is easy to damage the screen under the action of its own gravity, which seriously affects the processing progress. At the same time, the ore cannot be effectively classified and is prone to blockage. Therefore, it is particularly important to solve the above problems. Summary of the invention

[0003] The present invention overcomes the deficiencies of the prior art and provides a coal mine screening device which is convenient for classification, prevents clogging, has high working efficiency and avoids damage to the screen body.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A coal mine screening device, comprising a shell, wherein a separation roller, a collecting hopper and a screen body are sequentially arranged in a cavity of the shell from top to bottom, wherein the separation roller is horizontally rotatably connected to the shell through both ends, the left and right ends of the separation roller both penetrate the shell, and eccentric wheels are sleeved on the left and right ends, and a driven pulley and a swing wheel are sleeved on the right end of the separation roller in sequence, wherein the driven pulley is belt-connected to a driving pulley, and the driving pulley is sleeved on the output end of a motor, and the motor is mounted on the top of the shell, and a swing rod is arranged on the swing wheel, and rotating rods are evenly distributed on the separation roller, and an upper guide rod is fixedly connected to the shell at a corresponding position above the separation roller, and the upper guide rod is tilted and evenly distributed along the extending direction of the axis of the separation roller, and a lower guide rod is fixedly connected to the shell at a corresponding position below the separation roller, and the lower guide rod is tilted and evenly distributed along the extending direction of the axis of the separation roller, and the rotating rods are staggered with the upper guide rod and the lower guide rod, and a feed hopper is arranged on the top of the shell at a corresponding position of the upper guide rod , a discharge port is provided on the side of the shell at the corresponding position of the lower guide rod, a receiving box is installed on the shell at the corresponding position of the discharge port, the collecting hopper is placed below the separation roller, a group of pressure-bearing rods are symmetrically provided on the side of the collecting hopper near the top, a buffer opening is provided on the shell at the corresponding position of the pressure-bearing rod, the pressure-bearing rod passes through the buffer opening and a pulley is rotatably sleeved on the end, the pulley is meshed with the eccentric wheel, and a guide rod is provided on the side of the pressure-bearing rod between the contact surface of the pressure-bearing rod and the buffer opening, A guide groove is provided on the side of the buffer opening between the pressure-bearing rod and the contact surface of the buffer opening, and the guide rod is placed in the guide groove. A buffer spring is provided between the pressure-bearing rod and the bottom of the buffer opening. The screen body is placed below the collecting hopper, and the screen body is tilted. One end of the screen body is hinged in the shell cavity, and the other end of the screen body passes through the shell. Ear seats are installed on both sides of the screen body outside the shell cavity, and brackets are hinged on the ear seats. The brackets are all hinged to the connecting rod, and the connecting rod is hinged to the rocker arm.

[0006] A further improvement of the present invention is that a debris removal door is provided on the side of the shell near the bottom end.

[0007] A further improvement of the present invention is that the cross section of the collecting hopper is funnel-shaped.

[0008] Compared with the prior art, the advantages of the present invention are:

[0009] Small ores enter the collecting hopper through the gaps between the guide rods that are arranged at intervals, and large ores are placed above the upper guide rod. As the separation roller rotates, the rotating rod on it can carry the large ores to rotate, and the large ores will be collected in the receiving box through the discharge port under the action of their own gravity; the small ores that enter the collecting hopper can be discharged into the screen body through the bottom under the action of the up and down swing of the collecting hopper, and the small ores can collect the mixed impurities such as sand and soil at the bottom of the shell under the action of the up and down swing of the screen body; the impurities such as sand and soil at the bottom of the shell can be easily cleaned through the cleaning door. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic front view of the structure of a coal mine screening device of the present invention;

[0011] Figure 2 It is a schematic front cross-sectional view of the structure of a coal mine screening device of the present invention;

[0012] Figure 3 It is a right side view schematically showing the structure of a coal mine screening device of the present invention;

[0013] Figure 4 A schematic top view of the structure of a coal mine screening device according to the present invention;

[0014] Figure 5 for Figure 1 The A-direction enlarged structural schematic diagram of a coal mine screening device of the present invention is shown;

[0015] Figure 6 for Figure 3 The diagram shown is a schematic diagram of the enlarged structure of a coal mine screening device according to the present invention in the B direction.

[0016] Description of reference numerals:

[0017] 1. Shell, 2. Feed hopper, 3. Separation roller, 4. Collecting hopper, 5. Screen body, 6. Eccentric wheel, 7. Driven pulley, 8. Swing wheel, 9. Driving pulley, 10. Motor, 11. Rocker, 12. Rotating rod, 13. Upper guide rod, 14. Lower guide rod, 15. Discharge port, 16. Receiving box, 17. Pressure rod, 18. Buffer opening, 19. Pulley, 20. Guide rod, 21. Guide groove, 22. Buffer spring, 23. Ear seat, 24. Bracket, 25. Connecting rod, 26. Cleaning door. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] like Figures 1 to 6As shown, a coal mine screening device provided by the present invention comprises a shell 1 and a feed hopper 2, characterized in that: a separation roller 3, a collecting hopper 4 and a screen body 5 are sequentially arranged in the cavity of the shell 1 from top to bottom, the separation roller 3 is connected to the shell 1 by rotating horizontally at both ends, the left and right ends of the separation roller 3 both penetrate the shell 1, and an eccentric wheel 6 is sleeved on the left and right ends, and a driven pulley 7 and a swing wheel 8 are sleeved on the right end of the separation roller 3 in sequence, the driven pulley 7 is connected to the driving pulley 9 by a belt, and the driving pulley 9 is sleeved on the output end of the motor 10, and the motor 10 is installed in the shell 1, a swing rod 11 is provided on the swing wheel 8, and rotating rods 12 are evenly distributed on the separation roller 3. An upper material guide rod 13 is fixedly connected to the shell 1 at the corresponding position above the separation roller 3. The upper material guide rod 13 is tilted and evenly distributed along the axis extension direction of the separation roller 3. A lower material guide rod 14 is fixedly connected to the shell 1 at the corresponding position below the separation roller 3. The lower material guide rod 14 is tilted and evenly distributed along the axis extension direction of the separation roller 3. The rotating rods 12 are staggered with the upper material guide rod 13 and the lower material guide rod 14. A feeding rod 13 is provided on the top of the shell 1 at the corresponding position of the upper material guide rod 13. The hopper 2 is provided with a discharge port 15 on the side of the shell 1 at the corresponding position of the lower guide rod 14, and a receiving box 16 is installed on the shell 1 at the corresponding position of the discharge port 15. The collecting hopper 4 is placed below the separation roller 3. The cross section of the collecting hopper 4 is funnel-shaped. A group of pressure rods 17 are symmetrically arranged near the top of the collecting hopper 4. The shell 1 at the corresponding position of the pressure rod 17 is provided with a buffer opening 18. The pressure rod 17 passes through the buffer opening 18 and a pulley 19 is rotatably sleeved at the end. The pulley 19 is meshed with the eccentric wheel 6. The pressure rod 17 side between the contact surface of the pressure rod 17 and the buffer opening 18 A guide rod 20 is provided at the bottom, a guide groove 21 is provided at the side of the buffer opening 18 between the contact surface of the pressure-bearing rod 17 and the buffer opening 18, the guide rod 20 is placed in the guide groove 21, a buffer spring 22 is provided between the pressure-bearing rod 17 and the bottom of the buffer opening 18, the screen body 5 is placed below the collecting hopper 4, the screen body 5 is tilted, one end of the screen body 5 is hinged in the cavity of the shell 1, and the other end of the screen body 5 passes through the shell 1, and ear seats 23 are installed on both sides of the screen body 5 outside the cavity of the shell 1, and brackets 24 are hinged on the ear seats 23, and the brackets 24 are hinged to the connecting rod 25, and the connecting rod 25 is hinged to the rocker 11.

[0020] A cleaning door 26 is provided on the side of the housing 1 near the bottom.

[0021] During operation, the motor 10 is started first, and then the ore is put into the feed hopper 2, and the ore falls on the upper guide rod 13. The small ore enters the collecting hopper 4 through the gap between the guide rods arranged at intervals, and the large ore is placed above the upper guide rod 13. As the separation roller 3 rotates, the rotating rod 12 thereon can carry the large ore to rotate. When the large ore contacts the lower guide rod 14, it is separated from the rotating rod 12. Since the lower connecting rod 25 is inclined, the large ore will be collected in the receiving box 16 through the discharge port 15 under the action of its own gravity. The small ore entering the collecting hopper 4 can be discharged into the sieve body 5 through the bottom under the action of the up and down swing of the collecting hopper 4. The small ore collects the mixed impurities such as sand and soil at the bottom of the shell 1 under the action of the up and down swing of the sieve body 5. The small ore without impurities such as sand and soil is finally discharged from the shell 1 through the sieve body 5, and the impurities such as sand and soil at the bottom of the shell 1 are conveniently cleaned through the cleaning door 26.

[0022] The working principle of the present invention is as follows: the motor 10 drives the active pulley 9, the active pulley 9 belt drives the driven pulley 7, the driven pulley 7 drives the separation roller 3 to rotate, the separation roller 3 drives the rotating rod 12, and at the same time drives the coaxial eccentric wheel 6 and the swing wheel 8, the eccentric wheel 6 engages the pulley 19, the pulley 19 presses the pressure rod 17, the pressure rod 17 presses the collecting hopper 4, the swing wheel 8 drives the swing rod 11, the swing rod 11 can drive the connecting rod 25 to move back and forth up and down, the connecting rod 25 drives the bracket 24 to move back and forth up and down, and the bracket 24 drives the screen body 5 to move back and forth up and down.

[0023] The parts not described in detail in this invention are prior art.

Claims

1. A coal mine screening device, characterized in that: The invention comprises a shell (1), wherein a separation roller (3), a collecting hopper (4) and a screen body (5) are sequentially arranged in a cavity of the shell (1) from top to bottom, wherein the separation roller (3) is horizontally rotatably connected to the shell (1) through both ends, the left and right ends of the separation roller (3) both pass through the shell (1), and eccentric wheels (6) are sleeved on the left and right ends, and the right end of the separation roller (3) is also sleeved with a driven pulley (7) and a swing wheel (8) in sequence, wherein the driven pulley (7) is belt-connected to a driving pulley (9), and the driving pulley (9) is sleeved on the output end of a motor (10), and the motor (10) is mounted on the top of the shell (1), and a swing rod (11) is provided on the swing wheel (8), and the separation roller (3) is uniformly distributed. A rotating rod (12) is arranged, an upper material guide rod (13) is fixedly connected to the shell (1) at a position corresponding to the upper side of the separation roller (3), the upper material guide rod (13) is arranged obliquely and is evenly distributed along the extension direction of the axis of the separation roller (3), a lower material guide rod (14) is fixedly connected to the shell (1) at a position corresponding to the lower side of the separation roller (3), the lower material guide rod (14) is arranged obliquely and is evenly distributed along the extension direction of the axis of the separation roller (3), the rotating rod (12) is staggered with the upper material guide rod (13) and the lower material guide rod (14), a feed hopper (2) is arranged on the top of the shell (1) at a position corresponding to the upper material guide rod (13), and a lower material guide rod (14) is arranged on the side of the shell (1) at a position corresponding to the lower material guide rod (14). There is a discharge port (15), a receiving box (16) is installed on the shell (1) at a position corresponding to the discharge port (15), the collecting hopper (4) is placed below the separating roller (3), a group of pressure rods (17) are symmetrically arranged on the side of the collecting hopper (4) near the top, and a buffer opening (18) is arranged on the shell (1) at a position corresponding to the pressure rod (17), the pressure rod (17) passes through the buffer opening (18) and a pulley (19) is rotatably sleeved on the end, the pulley (19) is meshed with the eccentric wheel (6), a guide rod (20) is arranged on the side of the pressure rod (17) between the contact surface of the pressure rod (17) and the buffer opening (18), and the pressure rod (17) and the buffer opening (18) are connected to each other. 8) A guide groove (21) is provided on the side of the buffer opening (18) between the contact surfaces, the guide rod (20) is placed in the guide groove (21), a buffer spring (22) is provided between the pressure-bearing rod (17) and the bottom of the buffer opening (18), the screen body (5) is placed below the collecting hopper (4), the screen body (5) is tilted, one end of the screen body (5) is hinged in the cavity of the shell (1), the other end of the screen body (5) passes through the shell (1), ear seats (23) are installed on both sides of the screen body (5) outside the cavity of the shell (1), brackets (24) are hinged on the ear seats (23), the brackets (24) are hinged to the connecting rods (25), and the connecting rods (25) are hinged to the swing rod (11); A cleaning door (26) is provided on the side of the housing (1) near the bottom end; The collecting hopper (4) has a funnel-shaped cross section.

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