A multi-stage coal preparation system and method for water-washed coal

Abstract

The present application provides a multi-stage coal selection system and method for water-washed coal, which relates to the field of water-washed coal, including a frame and a side plate, one side of the frame is fixedly connected with a dust collecting mechanism, the number of the side plates is two, a limiting groove is provided at the bottom of one side of one side of the side plate, a cleaning mechanism is slidably connected inside the limiting groove, and a translation mechanism is fixedly connected to one side of the side plate near the edge. After the coal falls onto the second screen, the third motor starts to drive the rotating plate to rotate, and the rotating plate reciprocates to pull the pull rod when rotating, and the pull rod reciprocates to drive the first screen, the second screen and the third screen to reciprocate and shake, thereby screening the coal, and screening coal of different sizes through the different sizes of sieve holes of the first screen, the second screen and the third screen, so that there is no need to frequently replace the screen, thereby improving the flexibility of coal screening, the screening effect and the screening efficiency.

Description

Technical Field

[0001] The present invention relates to the field of water-washed coal, and in particular to a multi-stage coal preparation system and method for water-washed coal. Background Art

[0002] Water-washed coal technology uses water to finely wash coal, remove gangue from the coal, improve the utilization rate and calorific value of coal, thereby reducing the transportation cost of gangue and further increasing the added value of coal. When finely washing coal, the coal is screened and differentiated and cleaned. Screening equipment is used when screening coal to screen the coal into different specifications.

[0003] Existing screening equipment is generally designed for screening with only a single-layer sieve plate. The size of the sieve holes of the screening plate is fixed. When screening coal of different sizes, screening plates with different apertures need to be replaced. The working efficiency is not high enough, the flexibility is low, and the screening effect is poor. At the same time, some coal powder usually falls off during screening. The fallen coal powder and small coal blocks will enter the sieve holes, which can easily cause blockage of the screen plate, thereby reducing its service life. When blocked, workers are required to clean the device frequently, which is labor-intensive and has a heavy cleaning burden.

[0004] Therefore, we have made improvements to this and proposed a multi-stage coal preparation system and method for water-washed coal. Summary of the invention

[0005] The object of the present invention is to provide a multi-stage coal preparation system and method for water-washed coal, which solves the problem that the existing screening equipment is generally designed with only a single-layer sieve plate for screening, and the size of the sieve holes of the screening plate is fixed. When screening coal of different sizes, screening plates with different apertures need to be replaced, and the working efficiency is not high enough, the flexibility is low, and the screening effect is poor. At the same time, some coal powder usually falls off during screening, and the fallen coal powder and small coal blocks will enter the sieve holes, which can easily cause blockage of the sieve plate, thereby reducing its service life. When blocked, workers are required to clean the device frequently, which has high labor intensity and heavy cleaning burden.

[0006] The specific application is as follows:

[0007] A multi-stage coal preparation system for water-washed coal comprises a frame and a side plate, wherein a dust collecting mechanism is fixedly connected to one side of the frame, the number of the side plates is two, a limiting groove is provided at the bottom of one side of one of the side plates, a cleaning mechanism is slidably connected inside the limiting groove, a translation mechanism is fixedly connected to one side of one side plate near the edge, a screening mechanism is arranged inside the frame, and a shaking mechanism is fixedly connected to one side of the inner wall of the frame.

[0008] As a preferred technical solution of the present application, the dust collecting mechanism includes a folding plate, one side of the folding plate is fixedly connected to a dust collecting box, the top of the folding plate is fixedly connected to an exhaust fan, the other end of the exhaust fan is fixedly connected to an exhaust pipe, the bottom of the exhaust pipe is fixedly connected to the top of the dust collecting box, a pull-out opening is provided on one side of the dust collecting box, a filter screen is slidably connected to the inside of the pull-out opening, a sealing plate is fixedly connected to one side of the filter screen, the four corners of the outer side of the sealing plate are installed on one side of the pull-out opening by installing first bolts, a discharge opening is provided at the bottom of one side of the dust collecting box, a sealing plate is provided on one side of the discharge opening, a dust suction hose is fixedly connected to the bottom of the dust collecting box, the other end of the dust suction hose is fixedly connected to a cavity plate, three dust suction rods are provided on the other side of the cavity plate, and connecting blocks are fixedly connected to both sides of the three dust suction rods.

[0009] As a preferred technical solution of the present application, the cleaning mechanism includes a sliding plate and a cleaning brush rod, the bottom of the sliding plate is slidably connected to the inside of the limiting groove, the middle part of the outer side of the sliding plate is fixedly connected to a first motor, the output end of the first motor is splined to a first transmission rod, the number of the cleaning brush rods is three, one side of the surface of the three cleaning brush rods is fixedly connected to a gear, and the other side of the surface of the three cleaning brush rods is fixedly connected to a first pulley, one end of two of the cleaning brush rods is rotatably connected to the top and bottom of the other side of the sliding plate by installing a first bearing, one end of another of the cleaning brush rods is fixedly connected to the other end of the first transmission rod, and the other ends of the three cleaning brush rods are rotatably connected to a right-angle plate by installing a second bearing, the sides of the three first pulleys are rotatably connected to the second pulleys by installing a crawler, the middle parts of the three second pulleys are fixedly connected to a rotating rod, one end of the three rotating rods is rotatably connected to the bottom of one side of the three right-angle plates by installing a third bearing, both sides of the middle part of the surface of the three rotating rods are fixedly connected to cams, and both sides of the middle part of the surface of the three cleaning brush rods are rotatably connected to the inside of the other side of the three connecting blocks by installing a fourth bearing.

[0010] As a preferred technical solution of the present application, the translation mechanism includes a mounting plate, and there are two mounting plates, the front sides of the two mounting plates are fixedly connected to the frame and fixedly connected to the bottom of the other side, one side of one of the mounting plates is fixedly connected to a second motor, the output end of the second motor is splined to a second transmission rod, the other end of the second transmission rod is fixedly connected to a screw rod, the other end of the screw rod is rotatably connected to one side of the other mounting plate by installing a fifth bearing, the surface of the screw rod is threadedly connected to a moving seat, and the other side of the moving seat is fixedly connected to the bottom of the outer side of the sliding plate.

[0011] As a preferred technical solution of the present application, the screening mechanism includes a first screen, the four corners of the first screen are fixedly connected to vertical poles, the second screen and the third screen are fixedly connected to the two sides of the surface of the vertical pole, the top and bottom surfaces of the vertical pole are sleeved with a first spring, the top and bottom of the vertical pole are inserted with a U-shaped plate, and the top and bottom of the vertical pole are fixedly connected with a blocking plate.

[0012] As a preferred technical solution of the present application, the shaking mechanism includes a sleeve, one side of the sleeve is fixedly connected to a third motor, the output end of the third motor is splined to a third transmission rod, the other end of the third transmission rod is fixedly connected to a rotating plate, the surface of the other side of the rotating plate near the edge is rotatably connected to a pull rod through a pin shaft, the other end of the pull rod is rotatably connected to a truss through a first movable hinge, and the two sides of the top of the truss are respectively fixedly connected to the middle of the bottom of the two side panels.

[0013] As a preferred technical solution of the present application, both sides of the middle part of the front and back sides of the two side panels are rotatably connected to a cross bar through a second movable hinge, the other end of the cross bar passes through the surface of the frame and is connected to a circular plate, and a second spring is sleeved on one side of the surface of the cross bar.

[0014] As a preferred technical solution of the present application, the surfaces of the two side panels are respectively provided with a first elliptical groove and a second elliptical groove adapted to the cleaning brush rod and the rotating rod, wherein the surface of the other side panel near the edge of one side of the second elliptical groove is provided with a T-shaped groove adapted to the right-angle plate.

[0015] The present invention also discloses a method for using a multi-stage coal preparation system for water-washed coal, which uses the multi-stage coal preparation system for water-washed coal, and comprises the following steps:

[0016] S1, screening and coal selection; the coal falls onto the second screen in the screening mechanism, the third motor starts to drive the rotating plate to rotate, the rotating plate reciprocates to pull the pull rod, the pull rod reciprocates to drive the first screen, the second screen and the third screen to shake back and forth, thereby screening the coal;

[0017] S2, screen cleaning; when the coal screening is finished, the first motor drives the three gears to rotate, and the rotation of the three gears drives the cleaning brush rod to rotate to clean the first screen, the second screen and the third screen. At the same time, when the three cleaning brush rods rotate, the second pulley is driven to rotate through the first belt pulley, and the rotation of the second belt pulley drives the rotating rod to rotate, and the rotation of the rotating rod drives the cams on both sides to rotate to knock the first screen, the second screen and the third screen, so that the coal powder firmly attached to the first screen, the second screen and the third screen is removed and the impurities blocking the screen holes are knocked and dredged. When the cleaning brush rod and the cam clean the first screen, the second screen and the third screen, the second motor drives the screw rod to rotate, and the screw rod rotation drives the cleaning brush rod and the cam to move, so as to evenly clean the first screen, the second screen and the third screen;

[0018] S3, coal powder collection; when cleaning, the exhaust fan is started, the exhaust pipe draws air inside the dust box, so that the dust box generates suction, and then the raised coal powder is sucked through the dust suction hose, and the raised coal powder enters the cavity plate through the dust suction rod, and then enters the dust box from the dust suction hose for collection, and finally the first screen, the second screen and the third screen are cleaned.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the scheme of this application:

[0021] 1. Through the setting of the screening mechanism and the shaking mechanism, after the coal falls onto the second screen, the third motor starts to drive the rotating plate to rotate, and the rotating plate pulls the pull rod back and forth when rotating, and the pull rod pulls back and forth when pulling, and drives the first screen, the second screen and the third screen to shake back and forth, so as to screen the coal, and screen the coal of different sizes through the different sizes of sieve holes of the first screen, the second screen and the third screen, so that there is no need to frequently replace the screen, thereby improving the flexibility of coal screening, screening effect and screening efficiency;

[0022] 2. Through the arrangement of the dust collecting mechanism, the cleaning mechanism and the translation mechanism, the second motor drives the screw rod to rotate, the screw rod rotates to drive the cleaning brush rod and the cam to move horizontally, the first motor drives the three gears to rotate, the three gears rotate to drive the cleaning brush rod to rotate to clean the first screen, the second screen and the third screen, and at the same time, when the three cleaning brush rods rotate, the second pulley is driven to rotate through the first pulley, the second pulley is driven to rotate the rotating rod, and the rotating rod is driven to rotate the cams on both sides to knock the first screen, the second screen and the third screen, so that the first screen, the second screen and the third screen are cleaned. The coal powder firmly attached to the mesh is fallen off and the small coal slag blocking the sieve holes is knocked and cleared. When cleaning, the coal powder is lifted up, the exhaust fan is started, and the exhaust pipe draws the air inside the dust box to generate suction in the dust box. The lifted coal powder is then sucked through the vacuum hose, and the lifted coal powder enters the cavity plate through the vacuum rod, and then enters the dust box from the vacuum hose for collection, and then the sieve holes of the first sieve, the second sieve and the third sieve are cleaned to avoid blockage of the first sieve, the second sieve and the third sieve, thereby reducing the workload of cleaners and the cleaning burden of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a multi-stage coal preparation system and method for water-washed coal provided in the present application;

[0024] Figure 2 A schematic diagram of the structure of a dust collecting mechanism of a multi-stage coal preparation system and method for water-washed coal provided in the present application;

[0025] Figure 3 A schematic diagram of the cleaning mechanism structure of a multi-stage coal preparation system and method for water-washed coal provided in the present application;

[0026] Figure 4 A schematic diagram of the translation mechanism structure of a multi-stage coal preparation system and method for water-washed coal provided in the present application;

[0027] Figure 5 A schematic diagram of the screening mechanism structure of a multi-stage coal preparation system and method for water-washed coal provided in the present application;

[0028] Figure 6 A schematic diagram of the structure of a shaking mechanism of a multi-stage coal preparation system and method for water-washed coal provided in the present application;

[0029] Figure 7 A schematic diagram of the cleaning mechanism of a multi-stage coal preparation system and method for water-washed coal provided in the present application;

[0030] Figure 8 A schematic diagram of the structure of a dust collecting mechanism of a multi-stage coal preparation system and method for water-washed coal provided in the present application;

[0031] Fig. 9 A schematic diagram of the overall structure of a screening mechanism of a multi-stage coal preparation system and method for water-washed coal provided in the present application.

[0032] Indicated in the figure:

[0033] 1. Framework;

[0034] 2. Side panels;

[0035] 3. Dust collection mechanism; 31. Dust collection box; 32. Exhaust fan; 33. Exhaust pipe; 34. Filter; 35. Dust suction hose; 36. Cavity plate; 37. Dust suction rod;

[0036] 4. Cleaning mechanism; 41. Sliding plate; 42. Cleaning brush rod; 43. First motor; 44. First transmission rod; 45. Gear; 46. First pulley; 47. Second pulley; 48. Rotating rod; 49. Cam;

[0037] 5. Translation mechanism; 51. Mounting plate; 52. Second motor; 53. Second transmission rod; 54. Screw rod;

[0038] 6. Screening mechanism; 61. First screen; 62. Vertical pole; 63. Second screen; 64. Third screen; 65. First spring;

[0039] 7. shaking mechanism; 71. sleeve frame; 72. third motor; 73. third transmission rod; 74. rotating plate; 75. pull rod; 76. truss;

[0040] 8. Crossbar;

[0041] 9. Second spring. DETAILED DESCRIPTION

[0042] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0043] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] Example 1: Please refer to Figures 1 to 9 The present invention provides a technical solution: a multi-stage coal preparation system for water-washed coal, comprising a frame 1 and a side plate 2, a dust collecting mechanism 3 is fixedly connected to one side of the frame 1, there are two side plates 2, a limiting groove is provided at the bottom of one side of one side plate 2, a cleaning mechanism 4 is slidably connected inside the limiting groove, a translation mechanism 5 is fixedly connected to one side of one side plate 2 near the edge, a screening mechanism 6 is arranged inside the frame 1, and a shaking mechanism 7 is fixedly connected to one side of the inner wall of the frame 1.

[0048] A multi-stage coal selection system for water-washed coal of the present invention is adopted. After the coal is dropped from the lower hopper onto the second screen 63, the third motor 72 is started to drive the rotating plate 74 to rotate. When the rotating plate 74 rotates, the pull rod 75 is pulled back and forth. When the pull rod 75 is pulled back and forth, it drives the first screen 61, the second screen 63 and the third screen 64 to swing back and forth, so as to screen coal of different sizes, thereby improving the flexibility, screening effect and screening efficiency of coal screening. When the screening is completed, the first motor 43 drives the three gears 45 to rotate. The three gears 45 rotate to drive the cleaning brush rod 42 to rotate to clean the first screen 61, the second screen 63 and the third screen 64. At the same time, when the three cleaning brush rods 42 rotate, the second pulley 47 is driven to rotate through the first pulley 46. The second pulley 47 rotates to drive the rotating rod 48 Rotate, the rotating rod 48 rotates to drive the cams 49 on both sides to rotate to knock the first screen 61, the second screen 63 and the third screen 64, so that the coal powder firmly attached to the first screen 61, the second screen 63 and the third screen 64 is removed and the small coal slag blocking the screen holes is knocked and dredged, and the screen holes of the first screen 61, the second screen 63 and the third screen 64 are cleaned, thereby reducing the labor of the cleaners and reducing the cleaning burden of the workers. During cleaning, the dust suction rod 37 moves with the cleaning brush rod 42, and then the exhaust fan 32 is started, and the exhaust pipe 33 draws air inside the dust box 31, so that the dust box 31 generates suction, and then the raised coal powder is sucked through the dust suction hose 35, and the raised coal powder enters the cavity plate 36 through the dust suction rod 37, and then enters the dust box 31 from the dust suction hose 35 for collection.

[0049] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the cleaning mechanism 4 includes a sliding plate 41 and a cleaning brush rod 42, the bottom of the sliding plate 41 is slidably connected to the inside of the limiting groove, the middle part of the outer side of the sliding plate 41 is fixedly connected to a first motor 43, the output end of the first motor 43 is splined to a first transmission rod 44, the number of the cleaning brush rods 42 is three, one side of the surface of the three cleaning brush rods 42 is fixedly connected to a gear 45, the other side of the surface of the three cleaning brush rods 42 is fixedly connected to a first pulley 46, one end of two cleaning brush rods 42 is rotatably connected to the top and bottom of the other side of the sliding plate 41 by installing a first bearing, one end of the other cleaning brush rod 42 is fixedly connected to the other end of the first transmission rod 44, the other ends of the three cleaning brush rods 42 are rotatably connected to a right-angle plate by installing a second bearing, the sides of the three first pulleys 46 are rotatably connected to a second pulley 47 by installing a crawler track, and the three second pulleys 4 A rotating rod 48 is fixedly connected to the middle part of 7, one end of the three rotating rods 48 is rotatably connected to the bottom of one side of the three right-angle plates by installing a third bearing, cams 49 are fixedly connected to both sides of the middle part of the surface of the three rotating rods 48, and both sides of the middle part of the surface of the three cleaning brush rods 42 are rotatably connected to the inside of the other side of the three connecting blocks by installing a fourth bearing, the first motor 43 drives the three gears 45 to rotate, and the three gears 45 rotate to drive the cleaning brush rod 42 to rotate to clean the first screen 61, the second screen 63 and the third screen 64, and at the same time, when the three cleaning brush rods 42 rotate, the second pulley 47 is driven to rotate by the first pulley 46, and the second pulley 47 rotates to drive the rotating rod 48 to rotate, and the rotating rod 48 rotates to drive the cams 49 on both sides to rotate to knock the first screen 61, the second screen 63 and the third screen 64, so that the coal powder firmly attached to the first screen 61, the second screen 63 and the third screen 64 is removed and the small coal slag blocking the sieve holes is knocked and dredged.

[0050] like Figure 1 , Figure 2 and Figure 8As shown, as a preferred embodiment, on the basis of the above-mentioned method, the dust collecting mechanism 3 further includes a folding plate, one side of the folding plate is fixedly connected to a dust collecting box 31, the top of the folding plate is fixedly connected to an exhaust fan 32, the other end of the exhaust fan 32 is fixedly connected to an exhaust pipe 33, the bottom of the exhaust pipe 33 is fixedly connected to the top of the dust collecting box 31, one side of the dust collecting box 31 is provided with a drawing port, the inside of the drawing port is slidably connected to a filter screen 34, one side of the filter screen 34 is fixedly connected to a sealing plate, the four corners of the outer side of the sealing plate are installed on one side of the drawing port by installing first bolts, the bottom of one side of the dust collecting box 31 is provided with a discharge port, and one side of the discharge port is provided with a sealing The bottom of the dust box 31 is fixedly connected with a dust suction hose 35, and the other end of the dust suction hose 35 is fixedly connected with a cavity plate 36. Three dust suction rods 37 are arranged on the other side of the cavity plate 36, and the two sides of the three dust suction rods 37 are fixedly connected with connecting blocks. When cleaning, the coal powder is lifted up, and the dust suction rods 37 move with the cleaning brush rods 42. Then the exhaust fan 32 is started, and the exhaust pipe 33 draws air inside the dust box 31, so that the dust box 31 generates suction, and then the lifted coal powder is sucked through the dust suction hose 35, and the lifted coal powder enters the cavity plate 36 through the dust suction rods 37, and then enters the dust box 31 from the dust suction hose 35 for collection.

[0051] like Figure 1 and Figure 4 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the translation mechanism 5 includes a mounting plate 51, the number of the mounting plates 51 is two, the front sides of the two mounting plates 51 are fixedly connected to the frame 1 and fixedly connected to the bottom of the other side, one side of one of the mounting plates 51 is fixedly connected to a second motor 52, the output end of the second motor 52 is splined with a second transmission rod 53, the other end of the second transmission rod 53 is fixedly connected to a screw rod 54, the other end of the screw rod 54 is rotatably connected to one side of the other mounting plate 51 by installing a fifth bearing, the surface of the screw rod 54 is threadedly connected to a moving seat, the other side of the moving seat is fixedly connected to the bottom of the outer side of the sliding plate 41, the second motor 52 drives the screw rod 54 to rotate, and the rotation of the screw rod 54 drives the cleaning brush rod 42 and the cam 49 to move horizontally, thereby evenly cleaning the first screen 61, the second screen 63 and the third screen 64.

[0052] like Figure 1 and Figure 5As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the screening mechanism 6 includes a first screen 61, four corners of the first screen 61 are fixedly connected with vertical rods 62, both sides of the surface of the vertical rod 62 are fixedly connected with second screens 63 and third screens 64, the top and bottom surfaces of the vertical rod 62 are sleeved with first springs 65, the top and bottom of the vertical rod 62 are plugged with U-shaped plates, and the top and bottom of the vertical rod 62 are fixedly connected with blocking plates. When the first screen 61, the second screen 63 and the third screen 64 reciprocate, the coal is screened by the different sizes of sieve holes of the first screen 61, the second screen 63 and the third screen 64.

[0053] like Figure 1 and Figure 6 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the shaking mechanism 7 includes a sleeve 71, one side of the sleeve 71 is fixedly connected to the third motor 72, the output end of the third motor 72 is splined to the third transmission rod 73, the other end of the third transmission rod 73 is fixedly connected to the rotating plate 74, the surface of the other side of the rotating plate 74 near the edge is rotatably connected to the pull rod 75 through a pin shaft, the other end of the pull rod 75 is rotatably connected to the truss 76 through a first movable hinge, the two sides of the top of the truss 76 are respectively fixedly connected to the middle of the bottom of the two side plates 2, the third motor 72 is started to drive the rotating plate 74 to rotate, and the rotating plate 74 rotates, pulling the pull rod 75 back and forth, and the pull rod 75 drives the first screen 61, the second screen 63 and the third screen 64 to shake back and forth when pulling back and forth, thereby screening the coal.

[0054] like Figure 6 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, both sides of the middle part of the front and back sides of the two side panels 2 are rotatably connected with a cross bar 8 through a second movable hinge, the other end of the cross bar 8 passes through the surface of the frame 1 and is connected with a circular plate, and a second spring 9 is sleeved on one side of the surface of the cross bar 8. Under the action of the second spring 9, the first screen 61, the second screen 63 and the third screen 64 are buffered and protected when they are swung left and right, so as to avoid damage to the first screen 61, the second screen 63 and the third screen 64 caused by excessive shaking.

[0055] like Figure 1 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the surfaces of the two side panels 2 are respectively provided with a first elliptical groove and a second elliptical groove adapted to the cleaning brush rod 42 and the rotating rod 48, wherein the surface of the other side panel 2 close to the edge of one side of the second elliptical groove is provided with a T-shaped groove adapted to the right-angle plate, when the cleaning brush rod 42 and the rotating rod 48 rotate and move, the right-angle plate cooperates with the T-shaped groove to limit the cleaning brush rod 42 and the rotating rod 48, so that the cleaning brush rod 42 and the rotating rod 48 can work more smoothly.

[0056] In combination with the above-mentioned multi-stage coal preparation system for water-washed coal, a method for using the multi-stage coal preparation system for water-washed coal is provided below, which specifically includes the following steps:

[0057] S1, screening coal; the coal falls onto the second screen 63 in the screening mechanism 6, the third motor 72 is started to drive the rotating plate 74 to rotate, and the rotating plate 74 reciprocates to pull the pull rod 75, and the pull rod 75 reciprocates to drive the first screen 61, the second screen 63 and the third screen 64 to shake back and forth, thereby screening the coal;

[0058] S2, screen cleaning; when the coal screening is finished, the first motor 43 drives the three gears 45 to rotate, and the three gears 45 rotate to drive the cleaning brush rod 42 to rotate to clean the first screen 61, the second screen 63 and the third screen 64. At the same time, when the three cleaning brush rods 42 rotate, the second pulley 47 rotates through the first pulley 46, and the second pulley 47 rotates to drive the rotating rod 48 to rotate, and the rotating rod 48 rotates to drive the cams 49 on both sides to rotate the first screen 61, the second screen 63 and The third screen 64 is knocked to remove the coal powder firmly attached to the first screen 61, the second screen 63 and the third screen 64 and to knock and clear the impurities blocking the screen holes. When the cleaning brush rod 42 and the cam 49 clean the first screen 61, the second screen 63 and the third screen 64, the second motor 52 drives the screw rod 54 to rotate, and the rotation of the screw rod 54 drives the cleaning brush rod 42 and the cam 49 to move, thereby evenly cleaning the first screen 61, the second screen 63 and the third screen 64;

[0059] S3, coal powder collection; during cleaning, the exhaust fan 32 is started, and the exhaust pipe 33 draws air inside the dust box 31, so that the dust box 31 generates suction, and then the raised coal powder is sucked through the dust suction hose 35, and the raised coal powder enters the cavity plate 36 through the dust suction rod 37, and then enters the dust box 31 from the dust suction hose 35 for collection, and finally the first screen 61, the second screen 63 and the third screen 64 are cleaned.

[0060] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A multi-stage coal preparation system for water-washed coal, characterized in that: It comprises a frame (1) and a side plate (2), one side of the frame (1) is fixedly connected to a dust collecting mechanism (3), there are two side plates (2), a limiting groove is provided at the bottom of one side of one side of the side plate (2), a cleaning mechanism (4) is slidably connected inside the limiting groove, a translation mechanism (5) is fixedly connected to one side of one side plate (2) near the edge, a screening mechanism (6) is arranged inside the frame (1), and a shaking mechanism (7) is fixedly connected to one side of the inner wall of the frame (1); The cleaning mechanism (4) comprises a sliding plate (41) and a cleaning brush rod (42), the bottom of the sliding plate (41) is slidably connected to the inside of the limiting groove, a first motor (43) is fixedly connected to the middle of the outer side of the sliding plate (41), an output end of the first motor (43) is spline-connected to a first transmission rod (44), the number of the cleaning brush rods (42) is three, one side of the surface of the three cleaning brush rods (42) is fixedly connected to a gear (45), the other side of the surface of the three cleaning brush rods (42) is fixedly connected to a first pulley (46), one end of two of the cleaning brush rods (42) is rotatably connected to the top and bottom of the other side of the sliding plate (41) by installing a first bearing, and the other end of the cleaning brush rods (42) is fixedly ... One end of the cleaning brush rod (42) is fixedly connected to the other end of the first transmission rod (44), the other ends of the three cleaning brush rods (42) are rotatably connected to a right angle plate by installing a second bearing, the sides of the three first pulleys (46) are rotatably connected to a second pulley (47) by installing a crawler track, the middle parts of the three second pulleys (47) are fixedly connected to a rotating rod (48), one end of the three rotating rods (48) is rotatably connected to the bottom of one side of the three right angle plates by installing a third bearing, both sides of the middle of the surface of the three rotating rods (48) are fixedly connected to a cam (49), and both sides of the middle of the surface of the three cleaning brush rods (42) are rotatably connected to the inside of the other side of the three connecting blocks by installing a fourth bearing; The translation mechanism (5) comprises a mounting plate (51), wherein the number of the mounting plates (51) is two, the front sides of the two mounting plates (51) being fixedly connected to the frame (1) and the bottom sides of the other sides being fixedly connected, one side of one of the mounting plates (51) being fixedly connected to a second motor (52), the output end of the second motor (52) being spline-connected to a second transmission rod (53), the other end of the second transmission rod (53) being fixedly connected to a lead screw (54), the other end of the lead screw (54) being rotatably connected to one side of the other mounting plate (51) by installing a fifth bearing, the surface of the lead screw (54) being threadedly connected to a moving seat, the other side of the moving seat being fixedly connected to the bottom side of the outer side of the sliding plate (41).

2. A multi-stage coal preparation system for water-washed coal according to claim 1, characterized in that: The dust collecting mechanism (3) comprises a folding plate, one side of the folding plate is fixedly connected to a dust collecting box (31), the top of the folding plate is fixedly connected to an exhaust fan (32), the other end of the exhaust fan (32) is fixedly connected to an exhaust pipe (33), the bottom of the exhaust pipe (33) is fixedly connected to the top of the dust collecting box (31), one side of the dust collecting box (31) is provided with a draw-out opening, the interior of the draw-out opening is slidably connected to a filter screen (34), and one side of the filter screen (34) is fixedly connected to a sealing plate The four corners of the outer side of the sealing plate are mounted on one side of the drawer port by installing first bolts; a discharge port is provided at the bottom of one side of the dust collecting box (31); a sealing plate is provided on one side of the discharge port; a dust suction hose (35) is fixedly connected to the bottom of the dust collecting box (31); the other end of the dust suction hose (35) is fixedly connected to a cavity plate (36); three dust suction rods (37) are provided on the other side of the cavity plate (36); and both sides of the three dust suction rods (37) are fixedly connected to connecting blocks.

3. A multi-stage coal preparation system for water-washed coal according to claim 1, characterized in that: The screening mechanism (6) comprises a first screen (61), four corners of the first screen (61) are fixedly connected to vertical poles (62), two sides of the surface of the vertical pole (62) are fixedly connected to a second screen (63) and a third screen (64), the top and bottom surfaces of the vertical pole (62) are sleeved with a first spring (65), the top and bottom of the vertical pole (62) are plugged with a U-shaped plate, and the top and bottom of the vertical pole (62) are fixedly connected to a blocking plate.

4. A multi-stage coal preparation system for water-washed coal according to claim 1, characterized in that: The shaking mechanism (7) comprises a sleeve (71), one side of the sleeve (71) is fixedly connected to a third motor (72), the output end of the third motor (72) is spline-connected to a third transmission rod (73), the other end of the third transmission rod (73) is fixedly connected to a rotating plate (74), the other side of the rotating plate (74) is rotatably connected to a pull rod (75) via a pin shaft on the surface near the edge, the other end of the pull rod (75) is rotatably connected to a truss (76) via a first movable hinge, and the two sides of the top of the truss (76) are respectively fixedly connected to the middle of the bottom of the two side panels (2).

5. A multi-stage coal preparation system for water-washed coal according to claim 1, characterized in that: Both sides of the middle of the front and back sides of the two side panels (2) are rotatably connected to a cross bar (8) via a second movable hinge, the other end of the cross bar (8) passes through the surface of the frame (1) and is connected to a circular plate, and a second spring (9) is sleeved on one side of the surface of the cross bar (8).

6. A multi-stage coal preparation system for water-washed coal according to claim 1, characterized in that: The surfaces of the two side plates (2) are respectively provided with a first elliptical groove and a second elliptical groove adapted to the cleaning brush rod (42) and the rotating rod (48), wherein the surface of the other side plate (2) near the edge of one side of the second elliptical groove is provided with a T-shaped sliding groove adapted to the right-angle plate.

7. A method for using a multi-stage coal preparation system for water-washed coal, characterized in that: A multi-stage coal preparation system for water-washed coal according to any one of claims 1 to 6 comprises the following steps: S1, screening and selecting coal; coal falls onto the second screen (63) in the screening mechanism (6), the third motor (72) is started to drive the rotating plate (74) to rotate, and the rotating plate (74) reciprocates to pull the pull rod (75), and the reciprocating pull of the pull rod (75) drives the first screen (61), the second screen (63) and the third screen (64) to shake back and forth, thereby screening the coal; S2, screen cleaning; when the coal screening is finished, the first motor (43) drives the three gears (45) to rotate, and the three gears (45) drive the cleaning brush rod (42) to rotate to clean the first screen (61), the second screen (63) and the third screen (64). At the same time, when the three cleaning brush rods (42) rotate, the second belt pulley (47) is driven to rotate through the first belt pulley (46), and the second belt pulley (47) is driven to rotate the rotating rod (48), and the rotating rod (48) drives the cams (49) on both sides to rotate to clean the first screen (61), the second screen (63) and the third screen (64). The three screens (64) are knocked to remove the coal powder firmly attached to the first screen (61), the second screen (63) and the third screen (64) and to knock and clear the impurities blocking the screen holes; when the cleaning brush rod (42) and the cam (49) clean the first screen (61), the second screen (63) and the third screen (64), the second motor (52) drives the screw rod (54) to rotate, and the rotation of the screw rod (54) drives the cleaning brush rod (42) and the cam (49) to move, thereby evenly cleaning the first screen (61), the second screen (63) and the third screen (64); S3, coal powder collection; during cleaning, the exhaust fan (32) is started, and the exhaust pipe (33) draws air from the dust box (31), so that the dust box (31) generates suction, and then the raised coal powder is sucked through the dust suction hose (35), and the raised coal powder enters the cavity plate (36) through the dust suction rod (37), and then enters the dust box (31) through the dust suction hose (35) for collection, and finally the first screen (61), the second screen (63) and the third screen (64) are cleaned.

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