An efficient and safe crusher for mining

Abstract

The present invention relates to the technical field of ore crushing, and in particular to an efficient and safe crusher for mining, which effectively solves the problem that the crushing size grade is inconvenient to adjust and the dust removal equipment needs to be manually cleaned regularly; it comprises a crushing bin, a receiving frame is fixedly connected to the upper side of the crushing bin, a plurality of screen rods evenly distributed along the front and rear directions are arranged in the receiving frame, and distance control components are respectively arranged on the left and right sides of the receiving frame, the distance control components can drive the screen rods to move and quickly and equidistantly adjust the distance between the screen rods, and a rotating shaft is rotatably connected in the crushing bin; the present invention can use the distance control component to uniformly adjust the gap between the screen rods by setting the receiving frame, the screen rods and the distance control component, and then can directly leak the relatively smaller coal ore into the crushing bin according to the crushing demand, without the need to use eccentric rollers and impact plates for secondary crushing, so as to avoid crushing the smaller coal ore into smaller coal blocks, which affects the transportation and production quality.

Description

Technical Field

[0001] The invention relates to the technical field of ore crushing, and in particular to a highly efficient and safe crusher used in mining. 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. Coal mines are reasonable spaces excavated by humans when digging geological layers rich in coal, usually including tunnels, shafts and mining faces, etc. In the process of coal mining, the volume of coal blocks is large, which is not conducive to transportation and later reprocessing. Therefore, crushing devices are often used to crush coal mines during coal mining. However, the existing crushers cannot quickly adjust the crushing size of coal ore according to demand during use, which is extremely inconvenient. In addition, coal ore is relatively brittle, and smaller coal ore is easily beaten into smaller coal ore when transported to the crusher, affecting the quality, which needs to be solved urgently. At the same time, a large amount of dust is easily generated during the crushing process. In the coal mine tunnels, if the dust is too large, it is easy to affect the health of workers. However, although the existing crusher dust removal device can have a dust removal effect, the effect is not good and manual treatment is required regularly, which is very inconvenient. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an efficient and safe crusher for mining, which effectively solves the problem that the crushing size grade is inconvenient to adjust and the dust removal equipment needs to be cleaned manually on a regular basis.

[0004] The technical solution solved by the present invention is that it includes a crushing bin, a receiving frame is fixedly connected to the upper side of the crushing bin, a plurality of sieve rods evenly distributed along the front and rear directions thereof are arranged in the receiving frame, and distance control components are respectively arranged on the left and right sides of the receiving frame, the distance control components can drive the sieve rods to move and quickly and equidistantly adjust the spacing between the sieve rods, a rotating shaft is rotatably connected in the crushing bin, an eccentric roller is fixedly connected to the outer end of the rotating shaft, a baffle is fixedly connected to the left side of the crushing bin, an arc-shaped impact plate is hinged on the lower side of the baffle, arc grooves are respectively provided on the front and rear sides of the crushing bin, and two support rods that are opposite to each other and are respectively located in the arc grooves on the corresponding sides are fixedly connected to the right end of the impact plate, an adjusting component is arranged at the front end of the crushing bin, the adjusting component can drive the impact plate to swing and provide power for adjusting the spacing between the sieve rods, a dust removal bin is fixedly connected to the left side of the crushing bin, an electromagnetic grille is arranged in the dust removal bin, a filter screen is fixedly connected above the electromagnetic grille, a cleaning component is arranged in the dust removal bin, and the cleaning component can be used to clean dust adsorbed on the electromagnetic grille and the filter screen.

[0005] The distance control component includes a rotating rod, which is provided with a plurality of diffusion grooves corresponding to the screen rods one by one. The left and right sides of the screen rods are respectively fixedly connected with sliding pins inserted into the diffusion grooves on the corresponding sides. A pulley is fixedly connected to the front end of the rotating rod. The two pulleys are connected via a belt transmission. Inclined plates are respectively fixedly connected to the front end and the rear end of the screen rods, and the two inclined plates are symmetrical front and back.

[0006] The adjusting assembly includes a moving block, two rotatable turntables are respectively provided on the left and right sides of the moving block, a lever is fixedly connected to the rear end of the turntable, connecting rods are respectively hinged on the front and rear sides of the turntable, the other end of the connecting rod is fixedly connected to a limiting block, and limiting ratchet strips are respectively provided on the upper and lower sides of the moving block, the limiting ratchet strips are divided into upper and lower ratchet teeth in different directions, the limiting block on the left side cooperates with the upper side of the limiting ratchet strip, and the limiting block on the right side cooperates with the lower side of the limiting rack, a push-pull rod is fixedly connected to the right end of the moving rod, and a connecting frame is fixedly connected to the right end of the push-pull rod, a waist-shaped groove is opened in the middle of the connecting frame, and the front support rod is located in the waist-shaped groove.

[0007] A driving block which can move left and right is provided in the middle of the moving block. The driving block is a parallelogram. The inclined surfaces of the driving block on both sides can contact the lever on the corresponding side. A hydraulic rod is fixedly connected to the front end of the crushing bin, and the output end of the hydraulic rod is fixedly connected to the left end of the moving block.

[0008] The front and rear sides of the moving block are respectively fixedly connected with a plurality of balance rods, the limit block is slidably connected with a group of balance rods on the corresponding side, and one of the balance rods in one group is provided with a return spring located between the limit block and the moving block.

[0009] A connecting rod is fixedly connected to a front end of the belt pulley on the right side, a movable groove is provided on the lower side of the connecting rod, and a movable pin located in the movable groove is fixedly connected to the front end of the moving block.

[0010] The right end of the dust removal bin is connected to the crushing bin via a dust suction pipe, the right end of the dust suction pipe is fixedly connected to a protective net, the upper end of the dust removal bin is fixedly connected to an air outlet pipe, the lower side of the dust removal bin is slidably connected to a dust storage box, and the lower side of the dust removal bin is fixedly connected to a dust collecting hopper located between the electromagnetic grille and the dust storage box.

[0011] The cleaning assembly includes a driving motor, an output end of the driving motor is fixedly connected to a reciprocating screw, the reciprocating screw is rotatably connected to the dust removal bin, a cleaning rod is threadedly connected to the outer wall of the reciprocating screw, a cleaning brush that cooperates with the electromagnetic grille is fixedly connected to the cleaning rod, a rocker is hinged at the front end of the reciprocating screw, a lifting rod is slidably connected to the front side wall of the dust removal bin, the lower end of the lifting rod is hinged to the upper end of the rocker, the upper end of the lifting rod is fixedly connected to a waist-shaped frame, the front side wall of the dust removal bin is rotatably connected to a rotating rod, the left end of the rotating rod is fixedly connected to an oscillation hammer, and the right end of the rotating rod is eccentrically fixedly connected to a connecting pin located in the waist-shaped frame.

[0012] The upper end of the crushing bin is fixedly connected to a lower material bin, a feed conveyor belt is arranged in the lower material bin, a splash-proof net is fixedly connected to the upper side of the lower material bin, a discharge conveyor belt is arranged on the lower side of the crushing bin, the rear ends of the feed conveyor belt and the discharge conveyor belt are fixedly connected to pulley 2, the rear end of the rotating shaft is fixedly connected to a spur gear, the rear end of the crushing bin is fixedly connected to pulley 3, the rear end of pulley 3 is fixedly connected to a spur gear meshing with the spur gear, and the two pulleys 2 are connected to pulley 3 via belt 2.

[0013] The present invention provides a receiving frame, a screen rod and a distance control component, and can use the distance control component to uniformly adjust the gap of the screen rod, so that the relatively smaller coal ore can be directly leaked into the crushing bin according to the crushing demand, without the need to use eccentric rollers and impact plates for secondary crushing, thereby avoiding crushing the smaller coal ore into smaller coal blocks, which affects the transportation and production quality. The rotating shaft, eccentric rollers, impact plates, arc grooves, support rods and adjustment components are provided, and the distance between the impact plate and the eccentric roller can be adjusted by the adjustment component, so that the size of the crushed coal ore can be controlled according to demand, without the need for manual or shutdown operations, thus reducing time waste and avoiding interruption of production rhythm.

[0014] The present invention can use the dust removal bin to absorb dust caused by crushing in the crushing bin by arranging a dust removal bin, an electromagnetic grille and a filter. When the dust-laden air enters the dust removal bin, the electromagnetic grille absorbs the dust in the air and purifies the air. The filter is then used for secondary purification to prevent residual dust from being discharged into the air through the exhaust pipe. After a certain period of dust collection, the electromagnetic grille is closed to cut off the power, and then the cleaning component is started to clean the dust on the electromagnetic grille and the dust on the filter to ensure normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the main axonometric drawing of the present invention.

[0016] Figure 2 It is a partially cutaway front view schematic diagram of the present invention.

[0017] Figure 3 It is a bottom view schematic diagram of the straight rod in the present invention.

[0018] Figure 4 It is a partially cutaway front view schematic diagram of the hydraulic rod in the present invention.

[0019] Figure 5 It is a right side schematic diagram of the reciprocating screw in the present invention.

[0020] Figure 6 It is a rear axonometric view of the present invention.

[0021] Figure 7 It is a front view schematic diagram of the limit block in the present invention.

[0022] Figure 8 It is a front view schematic diagram of the screen rod in the present invention.

[0023] Fig. 9 It is a front view schematic diagram of the inclined plate in the present invention.

[0024] Fig.10 The present invention Figure 3 A is an enlarged view of the middle image.

[0025] Fig.11 The present invention Figure 5 Enlarged view of B.

[0026] In the figure: 1. Crushing bin; 2. Receiving frame; 3. Screen rod; 4. Distance control assembly; 5. Rotating shaft; 6. Eccentric roller; 7. Baffle; 8. Impact plate; 9. Arc groove; 10. Support rod; 11. Adjustment assembly; 12. Dust removal bin; 13. Electromagnetic grille; 14. Filter; 15. Cleaning assembly; 16. Rotating rod; 17. Diffusion groove; 18. Sliding pin; 19. Pulley 1; 20. Belt 1; 21. Inclined plate; 22. Moving block; 23. Turntable; 24. Push rod; 25. Connecting rod; 26. Limit block; 27. Limiting ratchet; 28. Push-pull rod; 29. ​​Connecting frame; 30. Waist-shaped groove; 31. Driving block; 32. Hydraulic rod; 33. Balance rod; 34. Reset spring; 35. Connecting rod; 36. Movable groove; 37. Movable pin; 38. Dust suction pipe; 39. Protective net; 40. Exhaust pipe; 41. Dust storage box; 42. Dust hopper; 43. Driving motor; 44. Reciprocating screw; 45. Cleaning rod; 46. Cleaning brush; 47. Rocker; 48. Lifting rod; 49. Waist-shaped frame; 50. Straight rod; 51. Oscillating hammer; 52. Connecting pin; 53. Unloading bin; 54. Feed conveyor belt; 55. Splash-proof net; 56. Discharge conveyor belt. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0028] Depend on Figures 1 to 11The present invention comprises a crushing bin 1, a receiving frame 2 is fixedly connected to the upper side of the crushing bin 1, a plurality of screen rods 3 are arranged in the receiving frame 2 along the front and rear direction thereof, a distance control assembly 4 is arranged on the left and right sides of the receiving frame 2, the distance control assembly 4 can drive the screen rods 3 to move and quickly and equidistantly adjust the distance between the screen rods 3, a rotating shaft 5 is rotatably connected in the crushing bin 1, an eccentric roller 6 is fixedly connected to the outer end of the rotating shaft 5, a baffle 7 is fixedly connected to the left side of the crushing bin 1, an arc-shaped impact plate 8 is hinged on the lower side of the baffle 7, and arc grooves 9 are respectively opened on the front and rear sides of the crushing bin 1, and an impact plate 8 is hinged on the lower side of the baffle 7. The right end of the plate 8 is fixedly connected to two support rods 10 which are opposite to each other and are located in the arc-shaped grooves 9 on their corresponding sides. An adjusting component 11 is provided at the front end of the crushing bin 1. The adjusting component 11 can drive the impact plate 8 to swing and provide power for adjusting the spacing of the screen rods 3. A dust removal bin 12 is fixedly connected to the left side of the crushing bin 1. An electromagnetic grille 13 is provided in the dust removal bin 12. A filter screen 14 is fixedly connected above the electromagnetic grille 13. A cleaning component 15 is provided in the dust removal bin 12. The cleaning component 15 can be used to clean dust adsorbed on the electromagnetic grille 13 and the filter screen 14.

[0029] The receiving frame 2, the screen rod 3 and the distance control component 4 are provided, and the distance control component 4 can be used to uniformly adjust the gap of the screen rod 3, so that the relatively smaller coal ore can be directly leaked into the crushing bin 1 according to the crushing demand, without the need to use the eccentric roller 6 and the impact plate 8 for secondary crushing, so as to avoid crushing the smaller coal ore into smaller coal blocks, which affects the transportation and production quality; the rotating shaft 5, the eccentric roller 6, the impact plate 8, the arc groove 9, the support rod 10 and the adjustment component 11 are provided, and the distance between the impact plate 8 and the eccentric roller 6 can be adjusted by the adjustment component 11, so as to control the size of the crushed coal ore according to the demand, without manual or shutdown operation, reducing time waste and avoiding interruption of production rhythm; the dust removal bin 12 and the electric The magnetic grille 13 and the filter screen 14 can use the dust removal bin 12 to absorb the dust caused by crushing in the crushing bin 1. When the dusty air enters the dust removal bin 12, the electromagnetic grille 13 absorbs the dust in the air and purifies the air. Then, the filter screen 14 is used for secondary purification to prevent the residual dust from being discharged into the air by the exhaust pipe 40. After a certain period of vacuuming, the electromagnetic grille 13 is closed to cut off the power, and then the cleaning component 15 is started to clean the dust on the electromagnetic grille 13 and the dust on the filter screen 14 to ensure normal use. An inspection door is hinged at the front end of the crushing bin. The inspection door facilitates maintenance work such as replacing the liner of the internal eccentric roller. The rotating shaft 5 is externally connected to a rotating motor to drive it to rotate.

[0030] The distance control assembly 4 includes a rotating rod 16, on which a plurality of diffusion grooves 17 corresponding to the sieve rods 3 are provided, and sliding pins 18 inserted into the diffusion grooves 17 on the corresponding sides are fixedly connected on the left and right sides of the sieve rods 3, respectively; a pulley 19 is fixedly connected to the front end of the rotating rod 16, and the two pulleys 19 are connected via a belt 20 for transmission; inclined plates 21 are fixedly connected to the front and rear ends of the sieve rods 3, respectively, and the two inclined plates 21 are symmetrical front and back.

[0031] As shown in the figure, the rotating rod 16, the diffusion groove 17, the sliding pin 18, the pulley 19, the belt 20 and the inclined plate 21 are arranged so that the rotation of the rotating rod 16 can be utilized to drive the screen rod 3 to adjust the gap at equal intervals through the action of the diffusion groove 17 and the sliding pin 18, so as to screen out coal ores of different sizes in advance according to different crushing grades, so as to prevent them from entering the crushing area and causing the crushing pressure to increase, and easily causing them to be crushed into smaller coal blocks. The inclination of the diffusion groove 17 increases from the middle to the front and rear sides to ensure that the spacing of the screen rod 3 changes the same. The pulley 19, the rotating rod 16 and the belt 20 can be arranged so that the rotating rod 16 can ensure that the two rotating rods 16 rotate at the same time, thereby ensuring that the screen rod 3 can be driven to move without being skewed. The inclined plate 21 can ensure that the coal ores are concentrated in the middle and will not fall from the gaps on the front and rear sides, thereby covering the front and rear gaps generated by the adjustment gap of the screen rod 3.

[0032] The adjusting assembly 11 comprises a moving block 22, two rotatable turntables 23 are respectively provided on the left and right sides of the moving block 22, a lever 24 is fixedly connected to the rear end of the turntable 23, connecting rods 25 are respectively hinged on the front and rear sides of the turntable 23, and the other end of the connecting rod 25 is fixedly connected to a limiting block 26, and limiting ratchet bars 27 are respectively provided on the upper and lower sides of the moving block 22, and the limiting ratchet bars 27 are divided into upper and lower ratchets in different directions, the limiting block 26 on the left side cooperates with the upper side of the limiting ratchet bar 27, and the limiting block 26 on the right side cooperates with the lower side of the limiting rack, a push-pull rod 28 is fixedly connected to the right end of the moving rod, and a connecting frame 29 is fixedly connected to the right end of the push-pull rod 28, a waist-shaped groove 30 is opened in the middle of the connecting frame 29, and the front support rod 10 is located in the waist-shaped groove 30.

[0033] As shown in the figure, the movable block 22, the turntable 23, the lever 24, the connecting rod 25, the limit block 26, the limit ratchet 27, the push-pull rod 28, the connecting frame 29 and the waist-shaped groove 30 can be used to fix the position of the support rod 10 by the cooperation of the limit block 26 and the limit ratchet 27, and then fix the position of the impact plate 8. At this time, since the limit block 26 and the limit ratchet 27 lock the left and right directions, the support rod 10 can be prevented from swinging freely, resulting in the problem of unstable fixation of the impact plate 8. By rotating the turntable 23 by the lever 24, the limit of two of the limit blocks 26 and the limit ratchet 27 can be released. After the limit block 26 on the left is released, the movable block 22 can move to the left, and after the right side is released, the movable block 22 can move to the right, thereby achieving the purpose of facilitating the control and adjustment of the position of the impact plate 8.

[0034] A driving block 31 that can move left and right is provided in the middle of the moving block 22. The driving block 31 is a parallelogram. The inclined surfaces of the driving block 31 on both sides can contact the lever 24 on the corresponding side. A hydraulic rod 32 is fixedly connected to the front end of the crushing bin 1, and the output end of the hydraulic rod 32 is fixedly connected to the left end of the moving block 22.

[0035] As shown in the figure, the drive block 31 and the hydraulic rod 32 are set so that the hydraulic rod 32 can be used to drive the drive block 31 to move left and right, so that the inclined surface of the drive block 31 can be used to contact the lever 24, so as to achieve the purpose of driving the turntable 23 to rotate through the lever 24, and the turntable 23 can be rotated, that is, the limit of the limit block 26 on one side is retracted, so that the moving block 22 can be driven to move in one direction to adjust the position of the impact plate 8.

[0036] The front and rear sides of the moving block 22 are respectively fixedly connected with a plurality of groups of balancing rods 33, the limit block 26 is slidably connected with a group of balancing rods 33 on its corresponding side, and a return spring 34 is provided on one of the balancing rods 33 in the group, which is located between the limit block 26 and the moving block 22.

[0037] As shown in the figure, setting a balance rod 33 can ensure the moving trajectory of the limit block 26, avoid the problem that it is skewed and cannot engage with the limit ratchet 27, and support the limit block 26 at the same time. Setting a reset spring 34 can ensure that after the adjustment is completed, the limit block 26 can engage with the limit ratchet 27 as soon as possible to ensure the fixation of the position of the moving block 22.

[0038] The front end of the pulley 19 on the right side is fixedly connected with a connecting rod 35 , a movable groove 36 is provided on the lower side of the connecting rod 35 , and the front end of the moving block 22 is fixedly connected with a movable pin 37 located in the movable groove 36 .

[0039] As shown in the figure, the connecting rod 35, the movable groove 36 and the movable pin 37 are arranged so that the position of the impact plate 8 can be adjusted by moving the moving block 22. At the same time, the spacing between the screen bars 3 on the receiving frame 2 can be adjusted by the connecting rod 35 to ensure that the size of the coal ore crushing grade is adjusted according to the needs. When the impact plate 8 is far away, the volume after crushing is larger. At the same time, the spacing between the screen bars 3 is larger, and the coal ore with a lower crushing grade is screened out in advance, which is convenient for reducing the crushing pressure and avoiding secondary crushing.

[0040] The right end of the dust removal bin 12 is connected to the crushing bin 1 through a dust suction pipe 38, and a protective net 39 is fixedly connected to the right end of the dust suction pipe 38. An air outlet pipe 40 is fixedly connected to the upper end of the dust removal bin 12, and a dust storage box 41 is slidably connected to the lower side of the dust removal bin 12. A dust collecting hopper 42 located between the electromagnetic grille 13 and the dust storage box 41 is fixedly connected to the lower side of the dust removal bin 12.

[0041] As shown in the figure, a dust suction pipe 38 is provided to facilitate dust suction, a protective net 39 is provided to prevent the splashing of coal ore during crushing and damage to the inside of the dust suction pipe 38, an air outlet pipe 40 is provided to connect to the exhaust equipment and discharge the filtered air at the same time, and a dust storage box 41 is provided to facilitate the centralized treatment of the cleaned dust and reduce the cleaning and operation time.

[0042] The cleaning assembly 15 includes a driving motor 43, the output end of the driving motor 43 is fixedly connected to a reciprocating screw 44, the reciprocating screw 44 is rotatably connected to the dust removal bin 12, the outer wall of the reciprocating screw 44 is threadedly connected to a cleaning rod 45, the cleaning rod 45 is fixedly connected to a cleaning brush 46 that cooperates with the electromagnetic grille 13, the front end of the reciprocating screw 44 is hinged to a rocker 47, the front side wall of the dust removal bin 12 is slidably connected to a lifting rod 48, the lower end of the lifting rod 48 is hinged to the upper end of the rocker 47, the upper end of the lifting rod 48 is fixedly connected to a waist-shaped frame 49, the front side wall of the dust removal bin 12 is rotatably connected to a rotating rod 16, the left end of the rotating rod 16 is fixedly connected to an oscillating hammer 51, and the right end of the rotating rod 16 is eccentrically fixedly connected to a connecting pin 52 located in the waist-shaped frame 49.

[0043] As shown in the figure, a reciprocating screw 44, a cleaning rod 45 and a cleaning brush 46 are provided so that the reciprocating screw 44 can be used to drive the cleaning rod 45 to move forward and backward, and the cleaning brush 46 can be used to clean the dust adsorbed on the electromagnetic grille 13 after power failure, so as to facilitate subsequent use. A rocker 47, a lifting rod 48, a waist frame 49, a rotating rod 16, an oscillation hammer 51 and a connecting pin 52 are provided so that the lifting rod 48 can be lifted and lowered by the rotation of the reciprocating screw 44 through the rocker 47, and then the rotating rod 16 can be driven to swing back and forth through the waist frame 49 and the connecting pin 52. The rotating rod 16 can drive the oscillation hammer 51 to continuously knock the filter 14 to knock the dust on the upper side down, and the dust is collected by the dust collecting hopper 42 and falls into the storage box, so as to achieve the purpose of automatic cleaning. The electromagnetic grille 13 can be dusted or the dust suction effect can be released by powering on and off, so as to facilitate control.

[0044] A lower material bin 53 is fixedly connected to the upper end of the crushing bin 1, a feed conveyor belt 54 is arranged in the lower material bin 53, a splash-proof net 55 is fixedly connected to the upper side of the lower material bin 53, a discharge conveyor belt 56 is fixedly connected to the lower side of the crushing bin 1, a pulley 2 is fixedly connected to the rear end of the feed conveyor belt and the rear end of the discharge conveyor belt 56, a spur gear is fixedly connected to the rear end of the rotating shaft 5, a pulley 3 is fixedly connected to the rear end of the crushing bin 1, a spur gear meshing with the spur gear is fixedly connected to the rear end of the pulley 3, and the two pulleys 2 are connected to the pulley 3 via a belt 2 transmission.

[0045] As shown in the figure, a lower material bin 53 is provided to facilitate centralized feeding into the crushing bin 1, a feed conveyor belt 54 is provided to facilitate conveying the newly transported coal ore, a splash screen 55 is provided to prevent the ore from flying out of the crushing bin 1 due to collision when crushing the material, causing personal safety problems to the surrounding workers, and a discharge conveyor belt 56, spur gears, spur gears, pulley two, pulley three and belt two are provided to utilize the rotation of the rotating shaft 5 to drive the discharge conveyor belt 56 and the feed conveyor belt 54 to rotate synchronously at the same time. The provision of spur gears and spur gears can change the inconsistent transmission direction of the rotating shaft and the feed conveyor belt 54 and the discharge conveyor belt 56, thereby ensuring the correct conveying direction of the conveyor belt.

[0046] When the present invention is in use, coal ore is put into the interior through the lower bin 53, and the coal ore falls onto the feed conveyor belt 54, and then is transported to the receiving frame 2 by the feed conveyor belt 54. Smaller coal ore falls from the gap between the screen bars 3 onto the discharge conveyor belt 56 without being crushed, and larger coal ore falls between the eccentric roller 6 and the impact plate 8, and then is crushed by the rotation of the eccentric roller 6 and the synchronous extrusion of the impact plate 8. After the crushing, the coal ore falls onto the discharge conveyor belt 56 and is uniformly transported out of the crushing bin 1;

[0047] When it is necessary to change the crushing grade according to demand, start the hydraulic rod 32. If smaller coal ore is needed, the hydraulic rod 32 drives the driving block 31 to move to the left, and the inclined surface of the driving block 31 contacts the left lever 24. Then the driving block 31 drives the turntable 23 to rotate through the lever 24. The turntable 23 pulls the two limit blocks 26 on the left to move relative to each other through the connecting rod 25. The two limit blocks 26 on the left are separated from the limit ratchet 27. The hydraulic rod 32 can pull the moving block 22 to move to the left. The moving block 22 drives the support rod 10 to move to the left through the push-pull rod 28. When it moves to the appropriate position, the hydraulic rod 32 stops and moves a certain distance to the right. The two limit blocks 26 can move back to each other under the action of the reset spring 34 and mesh with the limit ratchet 27 again, so as to achieve complete fixation of the position of the moving block 22, and to achieve adjustment and fixation of the position of the impact plate 8. When larger coal ore is needed, the hydraulic rod 32 drives the driving block 31 in the opposite direction to the upper process.

[0048] During the movement of the moving block 22, the connecting rod 35 is driven to swing through the action of the movable pin 37 and the movable groove 36. The swing of the connecting rod 35 can drive the pulley 19 to rotate, and the rotating rod 16 rotates synchronously. At this time, the diffusion groove 17 and the sliding pin 18 drive the screen rod 3 to move at equal intervals, so that the spacing adjustment of the screen rod 3 and the adjustment of the impact plate 8 can be synchronized, ensuring that the coal ore that can be screened out follows the changes, realizing the change of the screening requirements, reducing the difficulty of operation, and achieving the purpose of rapid adjustment.

[0049] In the present invention, the hydraulic rod 32 and the driving motor 43 are both prior art and will not be described in detail herein.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An efficient and safe crusher for mining, comprising a crushing chamber (1), characterized in that: A receiving frame (2) is fixedly connected to the upper side of the crushing chamber (1), a plurality of screen bars (3) are arranged in the receiving frame (2) and are evenly distributed along the front and rear directions thereof, and a distance control component (4) is respectively arranged on the left and right sides of the receiving frame (2), and the distance control component (4) can drive the screen bars (3) to move and quickly and equidistantly adjust the distance between the screen bars (3), a rotating shaft (5) is rotatably connected in the crushing chamber (1), an eccentric roller (6) is fixedly connected to the outer end of the rotating shaft (5), a baffle (7) is fixedly connected to the left side of the crushing chamber (1), an arc-shaped impact plate (8) is hingedly connected to the lower side of the baffle (7), and arc-shaped grooves (9) are respectively opened on the front and rear sides of the crushing chamber (1), and the impact plate (8) is on the right side. The end is fixedly connected with two supporting rods (10) which are opposite to each other and are located in arc-shaped grooves (9) on the corresponding sides thereof. The front end of the crushing bin (1) is provided with an adjusting component (11). The adjusting component (11) can drive the impact plate (8) to swing and provide power for adjusting the spacing of the screen bars (3). The left side of the crushing bin (1) is fixedly connected with a dust removal bin (12). An electromagnetic grille (13) is provided in the dust removal bin (12). A filter screen (14) is fixedly connected above the electromagnetic grille (13). A cleaning component (15) is provided in the dust removal bin (12). The cleaning component (15) can be used to clean dust adsorbed on the electromagnetic grille (13) and the filter screen (14). The distance control assembly (4) comprises a rotating rod (16), the rotating rod (16) is provided with a plurality of diffusion grooves (17) corresponding to the sieve rods (3) one by one, the left and right sides of the sieve rods (3) are respectively fixedly connected with sliding pins (18) inserted into the diffusion grooves (17) on the corresponding sides, the front end of the rotating rod (16) is fixedly connected with a pulley (19), the two pulleys (19) are connected by a belt (20), the front end and the rear end of the sieve rods (3) are respectively fixedly connected with inclined plates (21), and the two inclined plates (21) are symmetrical front and rear; The adjustment component (11) comprises a moving block (22), wherein two rotatable turntables (23) are respectively arranged on the left and right sides of the moving block (22), a lever (24) is fixedly connected to the rear end of the turntable (23), a connecting rod (25) is respectively hinged to the front and rear sides of the turntable (23), the other end of the connecting rod (25) is fixedly connected to a limit block (26), and the moving block (22) is respectively provided with limit ratchet bars (27) on the upper and lower sides, the limit ratchet bars (27) are divided into upper and lower ratchet teeth in different directions, the limit block (26) on the left side cooperates with the upper side of the limit ratchet bar (27), and the limit block (26) on the right side cooperates with the lower side of the limit rack, the right end of the moving rod is fixedly connected to a push-pull rod (28), and the right end of the push-pull rod (28) is fixedly connected to a connecting frame (29), a waist-shaped groove (30) is opened in the middle of the connecting frame (29), and the front support rod (10) is located in the waist-shaped groove (30); A driving block (31) that can move left and right is provided in the middle of the moving block (22). The driving block (31) is a parallelogram. The inclined surfaces on both sides of the driving block (31) can contact the lever (24) on the corresponding side. A hydraulic rod (32) is fixedly connected to the front end of the crushing chamber (1). The output end of the hydraulic rod (32) is fixedly connected to the left end of the moving block (22). A plurality of groups of balancing rods (33) are fixedly connected to the front and rear sides of the moving block (22), respectively; the limit block (26) is slidably connected to a group of balancing rods (33) on the corresponding side thereof; and a return spring (34) is provided on one of the balancing rods (33) in the group and is located between the limit block (26) and the moving block (22); The front end of the belt pulley 1 (19) on the right side is fixedly connected to a connecting rod (35), a movable groove (36) is provided on the lower side of the connecting rod (35), and the front end of the moving block (22) is fixedly connected to a movable pin (37) located in the movable groove (36).

2. The efficient and safe crusher for mining according to claim 1, characterized in that: The right end of the dust removal bin (12) is connected to the crushing bin (1) via a dust suction pipe (38); the right end of the dust suction pipe (38) is fixedly connected to a protective net (39); the upper end of the dust removal bin (12) is fixedly connected to an air outlet pipe (40); the lower side of the dust removal bin (12) is slidably connected to a dust storage box (41); and the lower side of the dust removal bin (12) is fixedly connected to a dust collecting hopper (42) located between the electromagnetic grille (13) and the dust storage box (41).

3. The efficient and safe crusher for mining according to claim 1, characterized in that: The cleaning assembly (15) comprises a driving motor (43), the output end of the driving motor (43) is fixedly connected to a reciprocating screw (44), the reciprocating screw (44) is rotatably connected to the dust removal bin (12), the outer wall of the reciprocating screw (44) is threadedly connected to a cleaning rod (45), the cleaning rod (45) is fixedly connected to a cleaning brush (46) matched with the electromagnetic grille (13), the front end of the reciprocating screw (44) is hingedly connected to a rocker (47), the front side wall of the dust removal bin (12) is slidably connected to a lifting rod (48), the lower end of the lifting rod (48) is hingedly connected to the upper end of the rocker (47), the upper end of the lifting rod (48) is fixedly connected to a waist-shaped frame (49), the front side wall of the dust removal bin (12) is rotatably connected to a straight rod (50), the left end of the straight rod (50) is fixedly connected to an oscillating hammer (51), and the right end of the straight rod (50) is fixedly connected to a connecting pin (52) located in the waist-shaped frame (49).

4. The efficient and safe crusher for mining according to claim 1, characterized in that: The upper end of the crushing bin (1) is fixedly connected to a lower material bin (53), a feed conveyor belt (54) is arranged in the lower material bin (53), a splash screen (55) is fixedly connected to the upper side of the lower material bin (53), a discharge conveyor belt (56) is fixedly connected to the lower side of the crushing bin (1), a rear end of the feed conveyor belt (54) and a rear end of the discharge conveyor belt (56) are both fixedly connected to a second pulley, a rear end of the rotating shaft (5) is fixedly connected to a spur gear, a rear end of the crushing bin (1) is fixedly connected to a third pulley, a rear end of the third pulley is fixedly connected to a spur gear meshing with the spur gear, and the two second pulleys are connected to the third pulley via a second belt transmission.

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