Impact type coal briquette crushing and screening equipment

Abstract

The invention relates to the technical field of coal briquette crushing and screening, in particular to impact type coal briquette crushing and screening equipment. According to the impact type coal briquette crushing and screening equipment, two kinds of coal briquettes can be crushed and screened at the same time, and the coal briquette crushing and screening efficiency is improved. Impact type coal briquette crushing and screening equipment comprises a connecting supporting frame, a discharging assembly and the like, and the discharging assembly is arranged on the supporting frame. Two kinds of coal briquettes are separated through a separation plate, then a two-way motor is started to drive a notched gear to rotate, the notched gear and a guide rack move in a meshed mode, the guide rack drives a guide column to move rightwards, and an impact plate moves rightwards along with the guide column to crush the coal briquettes; and small coal briquettes fall into the third discharging hopper and the fourth discharging hopper through the first filter screen to be discharged, large coal briquettes move into the first discharging hopper and the second discharging hopper to be discharged, and the effects that the two kinds of coal briquettes can be crushed and screened at the same time, and the coal briquette crushing and screening efficiency is improved are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of coal block crushing and screening, and in particular to an impact type coal block crushing and screening equipment. Background Art

[0002] Coal crushing and screening refers to the process of mechanically crushing large pieces of coal into the required particle size, and then classifying the crushed coal particles into a predetermined particle size range through a screening system. This process usually uses impact coal crushing and screening equipment. However, since existing impact coal crushing and screening equipment usually only crushes and screens one type of coal, when different coal blocks need to be processed, they can only be crushed and screened one by one, and two different coal blocks cannot be crushed and screened at the same time, resulting in low efficiency of coal crushing and screening.

[0003] Therefore, an impact-type coal block crushing and screening equipment has been developed which can crush and screen two types of coal blocks at the same time and improve the efficiency of coal block crushing and screening. Summary of the invention

[0004] In order to overcome the disadvantage that the existing impact-type coal block crushing and screening equipment usually only crushes and screens one type of coal block and is unable to crush and screen two different types of coal blocks at the same time, resulting in low coal block crushing and screening efficiency, the present invention provides an impact-type coal block crushing and screening equipment that can crush and screen two types of coal blocks at the same time and improve the coal block crushing and screening efficiency.

[0005] The technical solution is: an impact-type coal block crushing and screening equipment, including a connecting support frame, a discharging assembly, a first filter screen, a partition plate and an impact mechanism. The support frame is provided with a discharging assembly, the lower part of the connecting support frame is connected to the first filter screen, the middle part of the connecting support frame is connected to the partition plate, and the connecting support frame is provided with an impact mechanism capable of crushing raw coal.

[0006] As a further preferred solution, a mounting hole is opened on the lower side of the connecting support frame.

[0007] As a further preferred scheme, the discharging assembly includes a first discharging hopper, a second discharging hopper, a third discharging hopper and a fourth discharging hopper. The first discharging hopper is connected to the right side of the lower part of the connecting support frame, the second discharging hopper is connected to the left side of the lower part of the connecting support frame, the third discharging hopper is connected to the right side of the lower part of the connecting support frame, the third discharging hopper is located below the first discharging hopper, the fourth discharging hopper is connected to the lower side of the left part of the connecting support frame, and the fourth discharging hopper is located below the first filter.

[0008] As a further preferred scheme, the impact mechanism includes a bidirectional motor, a missing gear, a guide rack, a guide column, a first spring and an impact plate. The bidirectional motor is connected to the left side of the upper part of the connecting support frame, and the missing gear is connected to the output shaft of the bidirectional motor. The front and rear parts of the connecting support frame are slidably connected with guide racks, and the guide racks are meshed with adjacent missing gears. The front and rear parts of the connecting support frame are slidably connected with guide columns, and the guide columns are connected to adjacent guide racks. The first spring is connected between the guide columns and the connecting support frame, and an impact plate is connected between the left and right parts of the guide columns. The impact plate is located on both sides of the partition plate. Starting the bidirectional motor drives the missing gear to rotate, so that the missing gear meshes with the guide rack, so that the guide rack drives the guide column to move to the right, the first spring is squeezed and contracted, and the impact plate moves to the right accordingly, so that the impact plate hits the coal block to crush the coal block. After the missing gear disengages from the guide rack, the first spring rebounds, so that the guide rack and guide column are reset, driving the impact plate to reset.

[0009] As a further preferred embodiment, a vibration mechanism is also included, which includes a fixed frame, a first rotating column, a connecting gear, a fixed bracket, a second rotating column, a belt, a second filter, a fixed rod and a second spring. The left sides of the front and rear parts of the connecting support frame are connected to the fixed frame, and the first rotating column is rotatably connected to the fixed frame. The first rotating column is connected to the connecting gear, and the connecting gears are meshed with adjacent missing gears. The left side of the lower part of the connecting support frame is connected to the front and rear fixed brackets, and the fixed brackets are rotatably connected to the second rotating column. The second rotating column is connected to the adjacent first rotating column through a transmission wheel. A belt is connected to the lower part of the supporting frame in a sliding manner with a second filter screen, the second filter screen is located above the first filter screen, and fixed rods are connected to the left sides of the front and rear parts of the second filter screen, and the fixed rods are squeezed and matched with the adjacent second rotating columns, and a second spring is connected between the fixed rods and the connecting supporting frame. When the missing gear rotates, it meshes with the connecting gear to drive the first rotating column to rotate, and the second rotating column is driven to rotate through the belt transmission, so that the second rotating column pushes the fixed rod to move, driving the second filter screen to move, the second spring is stretched, and after the second rotating column is separated from the fixed rod, the second spring rebounds, so that the fixed rod and the second filter screen are reset.

[0010] As a further preferred scheme, it also includes a knocking mechanism, which includes a connecting bracket, a fixed plate and a rotating plate. The connecting brackets are connected on the side where the first rotating columns are close to each other, the upper and lower parts of the connecting brackets are connected to the fixed plates, and the fixed plates are rotatably connected to the rotating plates. When the first rotating column rotates, it drives the connecting bracket to rotate, and the fixed plate rotates, so that the rotating plate knocks the connecting support frame.

[0011] As a further preferred scheme, it also includes a scraping mechanism, which includes a driving motor, a bidirectional screw and a scraper. The driving motor is connected to the right side of the front of the connecting support frame, and a bidirectional screw is connected to the output shaft of the driving motor. The bidirectional screw is rotatably connected to the connecting support frame, and two left and right scrapers are threadedly connected to the middle of the bidirectional screw. The scrapers are slidably connected to the connecting support frame, and the scrapers are in contact with the first filter screen. Starting the driving motor drives the bidirectional screw to rotate, so that the scraper moves on the first filter screen.

[0012] As a further preferred scheme, it also includes a dust reduction mechanism, which includes a fixed connecting frame and a spray head. Multiple fixed connecting frames are connected to the front and rear sides of the upper part of the connecting support frame, and the fixed connecting frames are connected to the spray heads. When the coal blocks are broken in the connecting support frame, the water pipe is connected to the spray head to make the spray head spray water mist.

[0013] As a further preferred solution, a butt joint is provided on each spray head.

[0014] As a further preferred scheme, it also includes a placing mechanism, which includes a placing rack and a base plate. Multiple placing racks are connected to the front and rear sides of the middle of the connecting support rack, and multiple base plates are connected to the front and rear sides of the lower part of the connecting support rack. The wrench or cleaning brush is placed on the base plate through the placing rack.

[0015] The present invention has the following advantages: 1. The present invention separates the two types of coal blocks through a partition plate, and then starts the bidirectional motor to drive the missing gear to rotate. The missing gear meshes with the guide rack, so that the guide rack drives the guide column to move to the right, and the impact plate moves to the right to crush the coal blocks. The smaller coal blocks pass through the first filter screen and fall into the third and fourth discharge hoppers for discharge, and the larger coal blocks move to the first and second discharge hoppers for discharge, thereby achieving the effect of being able to crush and screen the two types of coal blocks at the same time and improving the coal block crushing and screening efficiency.

[0016] 2. The present invention drives the first rotating column to rotate by rotating the missing gear while meshing with the connecting gear, and drives the second rotating column to rotate through belt transmission, so that the second rotating column pushes the fixed rod to move, drives the second filter to move, and the second spring is stretched. After the second rotating column is separated from the fixed rod, the second spring rebounds, so that the fixed rod and the second filter are reset, thereby achieving the effect of vibrating and screening the coal blocks and improving the coal block screening efficiency.

[0017] 3. The present invention drives the connecting bracket to rotate while the first rotating column rotates, and the fixed plate rotates, so that the rotating plate strikes the connecting support frame, thereby achieving the effect of vibrating the connecting support frame, accelerating the coal screening efficiency, and avoiding coal adhesion.

[0018] 4. The present invention starts the driving motor to drive the bidirectional screw to rotate, so that the scraper moves on the first filter screen, thereby achieving the effect of scraping the coal on the first filter screen and avoiding clogging of the first filter screen.

[0019] 5. When the coal block is broken in the connecting support frame, the present invention connects the water pipe to the spray head so that the spray head sprays water mist, thereby achieving the effect of reducing dust when the coal block is broken and avoiding pollution of the working environment.

[0020] 6. The present invention places a wrench or a cleaning brush on the bottom plate through the placement rack, thereby achieving the effect of being able to place cleaning or repair tools, making it convenient for workers to clean or repair the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of a first partial three-dimensional structure of the present invention.

[0023] Figure 3 It is a sectional view of a second partial three-dimensional structure of the present invention.

[0024] Figure 4 It is a three-dimensional structural cross-sectional view of the impact mechanism of the present invention.

[0025] Figure 5 It is a three-dimensional structural cross-sectional view of the impact mechanism of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the vibration mechanism of the present invention.

[0027] Figure 7 It is a three-dimensional structural cross-sectional view of the vibration mechanism of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the vibration mechanism of the present invention.

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the striking mechanism of the present invention.

[0030] Fig.10 It is a three-dimensional structural cross-sectional view of the scraping mechanism of the present invention.

[0031] Fig.11 It is a three-dimensional structural schematic diagram of the dust reduction mechanism and the placement mechanism of the present invention.

[0032] Wherein: 1-connecting support frame, 10-first discharging hopper, 11-second discharging hopper, 12-third discharging hopper, 13-fourth discharging hopper, 2-first filter screen, 3-partition plate, 4-impact mechanism, 40-bidirectional motor, 41-missing gear, 42-guide rack, 43-guide column, 44-first spring, 45-impact plate, 5-vibration mechanism, 50-fixed frame, 51-first rotating column, 52-connecting gear, 53-fixed bracket, 54-second rotating column, 55-belt, 56-second filter screen, 57-fixed rod, 58-second spring, 6-knocking mechanism, 60-connecting bracket, 61-fixed plate, 62-rotating plate, 7-scraping mechanism, 70-driving motor, 71-bidirectional screw rod, 72-scraping plate, 8-dust reduction mechanism, 80-fixed connecting frame, 81-spray head, 9-placing mechanism, 90-placing frame, 91-bottom plate. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] An impact type coal block crushing and screening equipment, such as Figure 1-Figure 11 As shown, it includes a connecting support frame 1, a discharging assembly, a first filter screen 2, a partition plate 3 and an impact mechanism 4. The support frame is provided with a discharging assembly, and the discharging assembly includes a first discharging hopper 10, a second discharging hopper 11, a third discharging hopper 12 and a fourth discharging hopper 13. The first discharging hopper 10 is connected to the right side of the lower part of the connecting support frame 1, the second discharging hopper 11 is connected to the left side of the lower part of the connecting support frame 1, the third discharging hopper 12 is connected to the right side of the lower part of the connecting support frame 1, the third discharging hopper 12 is located below the first discharging hopper 10, the fourth discharging hopper 13 is connected to the lower side of the left part of the connecting support frame 1, and the fourth discharging hopper 13 is located below the first filter screen 2. An installation hole is opened on the lower side of the connecting support frame 1 for easy installation and fixation. The first filter screen 2 is connected to the lower part of the connecting support frame 1, the partition plate 3 is connected to the middle part of the connecting support frame 1, and an impact mechanism 4 is provided on the connecting support frame 1.

[0035] like Figure 1 , Figure 4 and Figure 5As shown, the impact mechanism 4 includes a bidirectional motor 40, a missing gear 41, a guide rack 42, a guide column 43, a first spring 44 and an impact plate 45. The bidirectional motor 40 is connected to the left side of the upper part of the connecting support frame 1, and the missing gear 41 is connected to the output shaft of the bidirectional motor 40. The front and rear parts of the connecting support frame 1 are both slidably connected with the guide rack 42, and the guide rack 42 is meshed with the adjacent missing gear 41. The front and rear parts of the connecting support frame 1 are both slidably connected with the guide column 43, and the guide column 43 is connected to the adjacent guide rack 42. The first spring 44 is connected between the guide column 43 and the connecting support frame 1, and the impact plate 45 is connected between the left and right parts of the guide column 43, and the impact plate 45 is located on both sides of the partition plate 3.

[0036] When using the present invention, firstly place the connecting support frame 1 in the coal crushing and screening area, then pour the two kinds of coal that need to be crushed and screened into the connecting support frame 1, separate the two kinds of coal by the partition plate 3, and then start the bidirectional motor 40 to drive the missing gear 41 to rotate, so that the missing gear 41 and the guide rack 42 are meshed and moved, so that the guide rack 42 drives the guide column 43 to move rightward, the first spring 44 is squeezed and contracted, and the impact plate 45 moves rightward accordingly, so that the impact plate 45 hits the coal to crush the coal. After the missing gear 41 disengages from the guide rack 42, the first spring 44 rebounds, causing the guide rack 42 and the guide column 43 to reset, driving the impact plate 45 to reset, and the coal blocks are crushed and fall onto the first filter screen 2. The smaller coal blocks pass through the first filter screen 2 and fall into the third discharge hopper 12 and the fourth discharge hopper 13 for discharge, and the larger coal blocks move to the first discharge hopper 10 and the second discharge hopper 11 for discharge, thereby achieving the effect of crushing and screening the two types of coal blocks at the same time and improving the coal block crushing and screening efficiency.

[0037] like Figure 1 , Figure 6 , Figure 7 and Figure 8As shown, it also includes a vibration mechanism 5, which includes a fixed frame 50, a first rotating column 51, a connecting gear 52, a fixed bracket 53, a second rotating column 54, a belt 55, a second filter 56, a fixing rod 57 and a second spring 58. The left sides of the front and rear parts of the connecting support frame 1 are connected to the fixed frame 50, the first rotating column 51 is rotatably connected to the fixed frame 50, the first rotating column 51 is connected to the connecting gear 52, and the connecting gear 52 is meshed with the adjacent missing gear 41. The left side of the lower part of the connecting support frame 1 is connected to There are two front and rear fixed brackets 53, and the fixed brackets 53 are rotatably connected with second rotating columns 54. The second rotating columns 54 are connected to the adjacent first rotating columns 51 with belts 55 through transmission wheels. The lower part of the connecting support frame 1 is slidably connected with a second filter screen 56, and the second filter screen 56 is located above the first filter screen 2. The left sides of the front and rear parts of the second filter screen 56 are connected with fixed rods 57, and the fixed rods 57 are squeezed and matched with the adjacent second rotating columns 54. A second spring 58 is connected between the fixed rods 57 and the connecting support frame 1.

[0038] The vibration mechanism 5 of the device can be used to vibrate and screen the coal blocks. After being crushed, the coal blocks first fall onto the second filter screen 56. The second filter screen 56 intercepts the oversized coal blocks and crushes the coal blocks again. The coal blocks that meet the size requirements fall onto the first filter screen 2 through the second filter screen 56. The missing gear 41 rotates and meshes with the connecting gear 52 to drive the first rotating column 51 to rotate. The second rotating column 54 is driven to rotate through the belt 55, so that the second rotating column 54 pushes the fixed rod 57 to move, and drives the second filter screen 56 to move. The second spring 58 is stretched. After the second rotating column 54 is separated from the fixed rod 57, the second spring 58 rebounds, so that the fixed rod 57 and the second filter screen 56 are reset, thereby achieving the effect of vibrating and screening the coal blocks and improving the coal block screening efficiency.

[0039] like Figure 1 and Fig. 9 As shown, it also includes a knocking mechanism 6, which includes a connecting bracket 60, a fixed plate 61 and a rotating plate 62. The connecting bracket 60 is connected to the side where the first rotating columns 51 are close to each other, and the upper and lower parts of the connecting bracket 60 are connected to the fixed plate 61, and the rotating plate 62 is rotatably connected to the fixed plate 61.

[0040] The knocking mechanism 6 of the device can be used to knock on the connecting support frame 1. When the first rotating column 51 rotates, it drives the connecting bracket 60 to rotate, and the fixed plate 61 rotates, so that the rotating plate 62 knocks on the connecting support frame 1, thereby making the connecting support frame 1 vibrate, accelerating the coal screening efficiency and preventing coal adhesion.

[0041] like Figure 1 and Fig.10As shown, a scraping mechanism 7 is also included, and the scraping mechanism 7 includes a driving motor 70, a bidirectional screw rod 71 and a scraper 72. The driving motor 70 is connected to the right side of the front of the connecting support frame 1, and a bidirectional screw rod 71 is connected to the output shaft of the driving motor 70. The bidirectional screw rod 71 is rotatably connected to the connecting support frame 1, and two left and right scrapers 72 are threadedly connected to the middle of the bidirectional screw rod 71. The scrapers 72 are both slidably connected to the connecting support frame 1, and the scrapers 72 are both in contact with the first filter screen 2.

[0042] The scraping mechanism 7 of the device can be used to scrape the first filter screen 2. The drive motor 70 is started to drive the bidirectional screw rod 71 to rotate, so that the scraper 72 moves on the first filter screen 2, thereby scraping the coal on the first filter screen 2 and avoiding clogging of the first filter screen 2.

[0043] like Figure 1 and Fig.11 As shown, a dust reduction mechanism 8 is also included, and the dust reduction mechanism 8 includes a fixed connecting frame 80 and a spray head 81. Four fixed connecting frames 80 are connected to the front and rear sides of the upper part of the connecting support frame 1. The fixed connecting frames 80 are connected to the spray heads 81, and the spray heads 81 are provided with docking tubes for easy docking with water pipes.

[0044] The dust reduction mechanism 8 of the device can reduce the dust generated when the coal blocks are crushed. When the coal blocks are crushed in the connecting support frame 1, the water pipe is connected to the spray head 81 so that the spray head 81 sprays water mist, thereby reducing the dust generated when the coal blocks are crushed and avoiding polluting the working environment.

[0045] like Figure 1 and Fig.11 As shown, it also includes a placement mechanism 9, which includes a placement rack 90 and a bottom plate 91. Three placement racks 90 are connected to the front and rear sides of the middle part of the connecting support frame 1, and three bottom plates 91 are connected to the front and rear sides of the lower part of the connecting support frame 1.

[0046] The placement mechanism 9 of the device can be used to place cleaning or repair tools, and a wrench or a cleaning brush can be placed on the bottom plate 91 through the placement rack 90, thereby playing a role in being able to place cleaning or repair tools, making it convenient for staff to clean or repair the device.

[0047] The technical principles of the embodiments of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be interpreted in any way as limiting the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the embodiments of the present invention without creative work, and these methods will fall within the protection scope of the embodiments of the present invention.

Claims

1. An impact type coal block crushing and screening equipment, characterized in that: The invention comprises a connecting support frame (1), a discharging assembly, a first filter screen (2), a partition plate (3) and an impact mechanism (4); the discharging assembly is arranged on the support frame, the lower part of the connecting support frame (1) is connected to the first filter screen (2), the middle part of the connecting support frame (1) is connected to the partition plate (3), and the connecting support frame (1) is provided with an impact mechanism (4) capable of crushing raw coal.

2. The impact type coal crushing and screening equipment according to claim 1, characterized in that: The lower side of the connecting support frame (1) is provided with a mounting hole.

3. The impact type coal crushing and screening equipment according to claim 1, characterized in that: The discharge assembly comprises a first discharge hopper (10), a second discharge hopper (11), a third discharge hopper (12) and a fourth discharge hopper (13); the first discharge hopper (10) is connected to the right side of the lower part of the connecting support frame (1); the second discharge hopper (11) is connected to the left side of the lower part of the connecting support frame (1); the third discharge hopper (12) is connected to the right side of the lower part of the connecting support frame (1); the third discharge hopper (12) is located below the first discharge hopper (10); the fourth discharge hopper (13) is connected to the lower left side of the connecting support frame (1); and the fourth discharge hopper (13) is located below the first filter screen (2).

4. The impact type coal crushing and screening equipment according to claim 1, characterized in that: The impact mechanism (4) comprises a bidirectional motor (40), a missing gear (41), a guide rack (42), a guide column (43), a first spring (44) and an impact plate (45). The left side of the upper part of the connecting support frame (1) is connected to the bidirectional motor (40), the output shaft of the bidirectional motor (40) is connected to the missing gear (41), the front and rear parts of the connecting support frame (1) are slidably connected to the guide rack (42), the guide rack (42) is meshed with the adjacent missing gear (41), the front and rear parts of the connecting support frame (1) are slidably connected to the guide column (43), the guide column (43) is connected to the adjacent guide rack (42), and the guide column (43) is connected to the connecting support frame (1) with a first spring. The spring (44) and the left and right parts of the guide column (43) are connected with a striking plate (45), and the striking plate (45) is located on both sides of the partition plate (3). The bidirectional motor (40) is started to drive the missing gear (41) to rotate, so that the missing gear (41) and the guide rack (42) are meshed and moved, so that the guide rack (42) drives the guide column (43) to move rightward, and the first spring (44) is squeezed and contracted, and the striking plate (45) moves rightward accordingly, so that the striking plate (45) strikes the coal block to crush the coal block. After the missing gear (41) is separated from the guide rack (42), the first spring (44) rebounds, so that the guide rack (42) and the guide column (43) are reset, and the striking plate (45) is driven to reset.

5. The impact type coal crushing and screening equipment according to claim 4, characterized in that: The vibrating mechanism (5) is also included. The vibrating mechanism (5) includes a fixed frame (50), a first rotating column (51), a connecting gear (52), a fixed bracket (53), a second rotating column (54), a belt (55), a second filter (56), a fixed rod (57) and a second spring (58). The left sides of the front and rear parts of the connecting support frame (1) are both connected to the fixed frame (50). The fixed frame (50) is rotatably connected to the first rotating column (51). The first rotating column (51) is connected to the connecting gear (52). The connecting gear (52) is meshed with the adjacent missing gear (41). The left side of the lower part of the connecting support frame (1) is connected to the front and rear fixed brackets (53). The fixed brackets (53) are both rotatably connected to the second rotating column (54). The second rotating column (54) is connected to the adjacent first rotating column (51) by a belt (55) through a transmission wheel. A second filter (56) is slidably connected to the lower part of the support frame (1). The second filter (56) is located above the first filter (2). The left sides of the front and rear parts of the second filter (56) are connected to fixed rods (57). The fixed rods (57) are pressed and matched with the adjacent second rotating columns (54). A second spring (58) is connected between the fixed rods (57) and the connecting support frame (1). The missing gear (41) rotates and meshes with the connecting gear (52) to drive the first rotating column (51) to rotate. The second rotating column (54) is driven to rotate through the belt (55), so that the second rotating column (54) pushes the fixed rod (57) to move, drives the second filter (56) to move, and the second spring (58) stretches. After the second rotating column (54) is separated from the fixed rod (57), the second spring (58) rebounds, so that the fixed rod (57) and the second filter (56) are reset.

6. The impact type coal crushing and screening equipment according to claim 5, characterized in that: The invention also comprises a knocking mechanism (6), which comprises a connecting bracket (60), a fixing plate (61) and a rotating plate (62). The connecting bracket (60) is connected to the side of the first rotating column (51) close to each other, the upper and lower parts of the connecting bracket (60) are connected to the fixing plate (61), and the fixing plate (61) is rotatably connected to the rotating plate (62). When the first rotating column (51) rotates, the connecting bracket (60) is driven to rotate, and the fixing plate (61) rotates, so that the rotating plate (62) rotates and knocks the connecting support frame (1).

7. The impact type coal crushing and screening equipment according to claim 6, characterized in that: The scraping mechanism (7) also includes a driving motor (70), a bidirectional screw rod (71) and a scraper (72). The driving motor (70) is connected to the right side of the front of the connecting support frame (1). The output shaft of the driving motor (70) is connected to the bidirectional screw rod (71). The bidirectional screw rod (71) is rotatably connected to the connecting support frame (1). The middle part of the bidirectional screw rod (71) is threadedly connected to two left and right scrapers (72). The scrapers (72) are both slidably connected to the connecting support frame (1). The scrapers (72) are both in contact with the first filter screen (2). When the driving motor (70) is started, the bidirectional screw rod (71) is driven to rotate, so that the scraper (72) moves on the first filter screen (2).

8. The impact type coal crushing and screening equipment according to claim 7, characterized in that: The invention also comprises a dust reduction mechanism (8), the dust reduction mechanism (8) comprising a fixed connection frame (80) and a spray head (81), a plurality of fixed connection frames (80) are connected to both the front and rear sides of the upper part of the connection support frame (1), and the fixed connection frames (80) are connected to the spray heads (81), and when the coal blocks are crushed in the connection support frame (1), the water pipe is connected to the spray head (81), so that the spray head (81) sprays water mist.

9. The impact type coal crushing and screening equipment according to claim 8, characterized in that: The spray head (81) is provided with a butt joint.

10. The impact type coal crushing and screening equipment according to claim 8, characterized in that: The device also comprises a placement mechanism (9), which comprises a placement frame (90) and a bottom plate (91). The middle part of the connecting support frame (1) is connected to a plurality of placement frames (90) on both sides of the front and rear, and the lower part of the connecting support frame (1) is connected to a plurality of bottom plates (91) on both sides of the front and rear. The wrench or the cleaning brush is passed through the placement frame (90) and placed on the bottom plate (91).

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