A multi-stage pulverizing and screening device for kudzu rice

Abstract

The invention relates to the technical field of kudzu rice, and discloses a multi-stage kudzu rice crushing and screening device, comprising a crushing barrel, the bottom surface of the crushing barrel is fixedly connected to a support rod, the top of the crushing barrel is rotatably connected to a crushing auger, and the bottom end of the crushing barrel is fixedly connected to a feeding frame. In the invention, the kudzu rice that is sufficiently crushed for the next step of processing falls out of a vibrating screen box through a discharging frame, thereby completing the multi-stage screening of the kudzu rice, and a connecting slider drives a discharging slide plate to slide forward, so that the kudzu rice with unqualified crushing degree can be discharged from both sides of the vibrating screen box for recycling, and a side screen can slow down the discharging speed of the kudzu rice to prevent the kudzu rice from being discharged from both sides of the vibrating screen box without being completely screened. At the same time, when the discharging slide plate slides, it drives the side cleaning brush to slide to clean the side screen to prevent the kudzu rice from being stuck on the side screen, thereby improving the recycling efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of kudzu vine, in particular to a multi-stage kudzu vine crushing and screening device. Background Art

[0002] Pueraria lobata is a traditional Chinese medicinal material, which usually needs to be crushed and screened during the preparation process to obtain the required particle size and purity. In the existing Pueraria lobata crushing and screening device, only Pueraria lobata with qualified particle size can be simply discharged from the device, while unqualified Pueraria lobata needs to be dismantled by the staff to be cleaned up later, which is very inconvenient. In addition, the unqualified Pueraria lobata accumulates in the device, which easily causes the device to be blocked and affects the discharge efficiency.

[0003] The patent with patent number CN202220662939.4 discloses a crushing and screening device for Chinese medicinal materials. The operation of the first motor of the patent drives the rotating shaft to rotate. Since the two crushing rollers are meshed with each other, the two crushing rollers rotate simultaneously to realize the crushing processing of the raw materials. The crushing and screening device for Chinese medicinal materials, by starting the second motor, the operation of the second motor drives the two worms to rotate simultaneously under the transmission cooperation of the sprocket and the chain. The worm drives the worm wheel to rotate, thereby driving the two connecting shafts to rotate, driving the cam to rotate, and can drive the screen to obtain reciprocating vibration in the vertical direction, and can screen the materials falling on the surface of the screen, so that the materials of qualified size can quickly fall into the receiving frame for easy collection. Through the setting of the crushing roller and the cam, the crushing and screening of the Chinese medicine can be realized, and the production efficiency of the Chinese medicine can be improved. The card connection cooperation between the plug plate and the inner wall of the receiving frame can realize the rapid disassembly and assembly of the receiving frame, which is easy to use and has high reliability.

[0004] Although the patent solves the above problems, it still cannot remove unqualified medicinal materials, so that unqualified medicinal materials accumulate in the device and clog the device. Therefore, a multi-stage kudzu rice crushing and screening device is proposed to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a multi-stage pulverizing and screening device for kudzu vine seed in view of the deficiencies in the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multi-stage kudzu rice crushing and screening device, including a crushing barrel, the bottom surface of the crushing barrel is fixedly connected to a support rod, the top of the crushing barrel is rotatably connected to a crushing auger, the bottom end of the crushing barrel is fixedly connected to a feeding frame, the bottom end of the feeding frame is fixedly connected to a vibrating screen material box, the inner wall of the vibrating screen material box is fixedly connected to an upper partition, the inner wall of the vibrating screen material box is fixedly connected to a lower partition, the lower surface of the lower partition is fixedly connected to a discharging frame, and the lower surface of the upper partition is fixedly connected to the A coarse material screen is connected, a fine material screen is fixedly connected to the lower surface of the lower partition, side screens are fixedly connected to the upper surface of the upper partition at both sides, discharging slides are slidably connected to the inner walls of the vibrating screen box at both sides, a linear motor is fixedly connected to the outer surface of the vibrating screen box at both sides, a connecting slide is slidably connected to the inner surface of the linear motor, a side cleaning brush is fixedly connected to the side of the discharging slide close to the side screen, and a delayed discharging device for delaying discharging to avoid feed blockage and provide sufficient screening time is provided inside the vibrating screen box. The interior of the dynamic screen material box is provided with a dredging device for making the material discharge smoother, a motor is installed on the top of the crushing auger, and the motor is fixedly connected to the upper surface of the crushing barrel, the side screen and the upper surfaces of the lower partition are fixedly connected, the connecting slide block is fixedly connected to the side of the discharging slide block away from the side screen, and the motor is started, and the motor drives the crushing auger to rotate, and the crushing auger crushes the kudzu rice in the crushing barrel, and the crushed kudzu rice enters the vibrating screen material box through the discharge frame, and the vibrating screen material box vibrates at this time, causing the kudzu rice inside to vibrate. Due to gravity, the rice continuously falls from the coarse material screen and the fine material screen for screening, and the vibration makes the screening faster. After screening, the kudzu rice with the worst crushing degree and the largest particle size remains on the coarse material screen, and the kudzu rice with medium particle size falls on the fine material screen. The kudzu rice that is sufficiently crushed and can be processed in the next step falls out of the vibrating screen box through the discharging frame. The linear motor is started, and the linear motor drives the connecting slider to move forward, and the connecting slider drives the discharging slide plate to slide forward, so that the kudzu rice with unqualified crushing degree can be discharged from both sides of the vibrating screen box for recycling.

[0007] The cam is hinged on the bottom of the L-shaped connecting block and the bottom of the L-shaped connecting block, and the cam is fixedly connected to the top of the L-shaped connecting block, and the cam is fixedly connected to the bottom of the L-shaped connecting block. The delayed transmission part moves forward, and at this time the delayed transmission part drives the L-shaped connecting block to move forward, and the L-shaped connecting block drives the baffle to move forward, so that the kudzu rice blocked in the blanking frame by the baffle falls into the vibrating screen material box. When the discharging slide plate drives the sliding column to move backward to the rear end of the delayed transmission part, it drives the delayed transmission part to move backward, and the delayed transmission part drives the L-shaped connecting block and the baffle to move backward to block the bottom of the blanking frame, so that the kudzu rice enters the vibrating screen material box intermittently in batches. When the baffle moves forward, it drives the pull rod to move forward, and the pull rod pulls the bottom end of the material receiving inclined plate to move forward, so that the material receiving inclined plate tilts. After the material receiving inclined plate tilts, the kudzu rice falling on the inclined surface of the material receiving inclined plate slides deeper into the vibrating screen material box. The delayed transmission part consists of a transmission plate and a transmission groove, and the transmission groove is arranged on the surface of the transmission plate, the surface of the sliding column is slidably connected to the inner wall of the transmission groove, and the bottom end of the L-shaped connecting block is fixedly connected to the top of the transmission plate.

[0008] Preferably, the dredging device includes an upper cleaning brush, a lower cleaning brush, an upper slide rail, and a lower slide rail, the upper cleaning brush is slidably connected to the upper surface of the coarse material screen, the lower cleaning brush is slidably connected to the upper surface of the fine material screen, the upper slide rail is fixedly connected to the upper surface of the upper partition, and the lower slide rail is fixedly connected to the upper surface of the lower partition, the dredging device also includes an upper pushing frame, a first connecting plate, a lower pushing frame, and a second connecting plate, the upper pushing frame is fixedly connected to the bottom end of the pushing rod, the first connecting plate is fixedly connected between the front and rear two upper pushing frames, the lower pushing frame is fixedly connected to the bottom end of the upper pushing frame, the second connecting plate is fixedly connected between the front and rear two lower pushing frames, The brush is fixedly connected to the lower surface of the upper push frame, the lower cleaning brush is fixedly connected to the lower surface of the lower push frame, the upper push frame is slidably connected to the inner surface of the upper slide rail, the lower push frame is slidably connected to the inner surface of the lower slide rail, the baffle moves back and forth to drive the push rod to move back and forth, the push rod drives the upper push frame to slide back and forth in the upper slide rail, and the upper push frame drives the upper push frame on the front side to reciprocate back and forth through the first connecting plate. The two upper push frames drive the two upper cleaning brushes to reciprocate back and forth to clean the coarse material screen, the upper push frame reciprocates back and forth to drive the lower push frame to slide back and forth in the slide rail, and the lower push frame drives the lower cleaning brush to clean the fine material stuck on the fine material screen.

[0009] The present invention adopts the above technical solution to bring the following beneficial effects:

[0010] 1. The multi-stage kudzu rice crushing and screening device can crush the kudzu rice that is sufficiently capable of the next step of processing and fall out of the vibrating screen box through the discharging frame, thereby completing the multi-stage screening of the kudzu rice. The connecting slider drives the discharging slide plate to slide forward, so that the kudzu rice with unqualified crushing degree can be discharged from both sides of the vibrating screen box for recycling, and the side screen can slow down the discharging speed of the kudzu rice to prevent the kudzu rice from being discharged from both sides of the vibrating screen box without being completely screened. At the same time, when the discharging slide plate slides, it drives the side cleaning brush to slide to clean the side screen to prevent the kudzu rice from being stuck on the side screen, thereby improving the recycling efficiency.

[0011] 2. In the multi-stage kudzu rice crushing and screening device, the delayed transmission member drives the L-shaped connecting block and the baffle to move backward to block the bottom of the feed frame, so that the kudzu rice enters the vibrating screen material box intermittently in batches, thereby providing a certain screening time, so that the screening effect is better, and the delayed transmission member makes the baffle stop for a certain time in the open and closed states, further improving the screening effect. After the receiving inclined plate is tilted, the kudzu rice falling on the inclined surface of the receiving inclined plate slides deeper into the vibrating screen material box, avoiding the kudzu rice from accumulating directly under the feed frame, thereby making the kudzu rice more evenly distributed and promoting the screening effect.

[0012] 3. The multi-stage kudzu vine millet crushing and screening device has two upper cleaning brushes that reciprocate back and forth to clean the coarse material screen, so that the kudzu vine millet stuck on the coarse material screen falls off, preventing the coarse material screen from being blocked and improving the discharge efficiency. The lower push frame drives the lower cleaning brush to clean the fine material stuck on the fine material screen, thereby completing multi-layer dredging and further improving the anti-blocking effect and discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional overall structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the present invention;

[0015] Figure 3 It is a schematic diagram of the front side stereoscopic structure of the discharge structure of the present invention;

[0016] Figure 4 It is a schematic diagram of the front side cross-section of the three-dimensional structure of the parts of the discharge structure of the present invention;

[0017] Figure 5 It is a schematic diagram of the front side stereoscopic structure of a partial structure of the delayed unloading device of the present invention;

[0018] Figure 6 It is a right side cross-sectional three-dimensional structural schematic diagram of the delayed unloading device of the present invention;

[0019] Figure 7 It is a schematic diagram of the front side cross-sectional three-dimensional structure of a partial structure of the dredging device of the present invention;

[0020] Figure 8 It is a schematic diagram of the front side three-dimensional structure of the dredging device of the present invention.

[0021] In the figure: 1. crushing barrel; 2. support rod; 3. crushing auger; 4. unloading frame; 5. vibrating screen box; 51. upper partition; 52. lower partition; 53. discharging frame; 54. coarse material screen; 55. fine material screen; 56. side screen; 57. discharging slide plate; 58. linear motor; 59. connecting slide block; 510. side cleaning brush; 6. delayed unloading device; 61. baffle; 62. L-shaped connecting block; 63. delayed transmission member; 64. sliding column; 65. hinge rod; 66. material receiving inclined plate; 67. pull rod; 68. push rod; 7. dredging device; 71. upper cleaning brush; 72. lower cleaning brush; 73. upper slide rail; 74. lower slide rail; 75. upper push frame; 76. first connecting plate; 77. lower push frame; 78. second connecting plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 8 One embodiment of the present invention is: a multi-stage millet crushing and screening device, comprising a crushing barrel 1, the bottom surface of the crushing barrel 1 is fixedly connected to a support rod 2, the top of the crushing barrel 1 is rotatably connected to a crushing auger 3, the bottom end of the crushing barrel 1 is fixedly connected to a feeding frame 4, the bottom end of the feeding frame 4 is fixedly connected to a vibrating screen material box 5, the inner wall of the vibrating screen material box 5 is fixedly connected to an upper partition 51, the inner wall of the vibrating screen material box 5 is fixedly connected to a lower partition 52, the lower surface of the lower partition 52 is fixedly connected to a discharging frame 53, the upper partition 5 A coarse material screen 54 is fixedly connected to the lower surface of the lower partition 52, a fine material screen 55 is fixedly connected to the lower surface of the lower partition 52, side screens 56 are fixedly connected to the upper surfaces of the upper partition 51, a discharge slide 57 is slidably connected to the inner walls of the vibration screen material box 5, a linear motor 58 is fixedly connected to the outer surfaces of the vibration screen material box 5, a connecting slide 59 is slidably connected to the inner surface of the linear motor 58, and a side cleaning brush 510 is fixedly connected to the side of the discharge slide 57 close to the side screen 56, and the crushing is sufficient to proceed to the next step. The processed kudzu rice falls out of the vibration screen material box 5 through the discharging frame 53, thereby completing the multi-stage screening of the kudzu rice. The vibration screen material box 5 is provided with a delayed discharging device 6 for delaying discharging to avoid material blockage and provide sufficient screening time. The vibration screen material box 5 is provided with a dredging device 7 for making the discharging smoother. A motor is installed on the top of the crushing auger 3, and the motor is fixedly connected to the upper surface of the crushing barrel 1. The side screen 56 is fixedly connected to both sides of the upper surface of the lower partition 52, and the connecting slider 59 and the discharging slider The plate 57 is fixedly connected to one side away from the side screen 56, and the connecting slider 59 drives the discharging slide plate 57 to slide forward, so that the kudzu rice with unqualified crushing degree can be discharged from both sides of the vibrating screen material box 5 for recycling, and the side screen 56 can slow down the discharging speed of the kudzu rice, preventing the kudzu rice from being discharged from both sides of the vibrating screen material box 5 before being completely screened. At the same time, when the discharging slide plate 57 slides, it drives the side cleaning brush 510 to slide to clean the side screen 56 to prevent the kudzu rice from being stuck on the side screen 56, thereby improving the recycling efficiency.

[0024] Working principle: Start the motor, the motor drives the crushing auger 3 to rotate, the crushing auger 3 crushes the kudzu rice in the crushing barrel 1, and the crushed kudzu rice enters the vibrating screen box 5 through the unloading frame 4. At this time, the vibrating screen box 5 vibrates, causing the kudzu rice inside to vibrate. Due to gravity, the kudzu rice continuously falls from the coarse material screen 54 and the fine material screen 55 for screening, and the vibration makes the screening faster. After screening, the kudzu rice with the worst crushing degree and the largest particle size remains on the coarse material screen 54, and the kudzu rice with medium particle size falls on the fine material screen 55. The kudzu rice that is fully crushed and can be processed in the next step passes through the discharging frame. 53 falls out of the vibrating screen material box 5, thereby completing the multi-stage screening of the kudzu rice, and starting the linear motor 58. The linear motor 58 drives the connecting slider 59 to move forward, and the connecting slider 59 drives the discharging slide plate 57 to slide forward, so that the kudzu rice with unqualified crushing degree can be discharged from both sides of the vibrating screen material box 5 for recycling, and the side screen 56 can slow down the discharging speed of the kudzu rice to prevent the kudzu rice from being discharged from both sides of the vibrating screen material box 5 before being completely screened. At the same time, when the discharging slide plate 57 slides, it drives the side cleaning brush 510 to slide to clean the side screen 56 to prevent the kudzu rice from being stuck on the side screen 56, thereby improving the recycling efficiency.

[0025] See also Figure 1-Figure 8On the basis of the above embodiment, in another embodiment of the present invention, the delayed unloading device 6 includes a baffle 61, an L-shaped connecting block 62, and a delayed transmission member 63. The baffle 61 is slidably connected to the top surface of the inner wall of the vibrating screen material box 5, and the L-shaped connecting block 62 is fixedly connected to both sides of the baffle 61. The delayed transmission member 63 is fixedly connected to the bottom of the L-shaped connecting block 62. The delayed transmission member 63 then drives the L-shaped connecting block 62 and the baffle 61 to move backward to block the bottom of the unloading frame 4, so that the gexianmi intermittently enters the vibrating screen material box 5 in batches, thereby providing a certain screening time, so that the screening effect is better, and the delayed transmission member 63 makes the baffle 61 stop for a certain time in the open and closed states, further improving the screening effect. The delayed unloading device 6 also includes a sliding column 64, a hinge rod 65, a material receiving inclined plate 66, a pull rod 67, and a push rod 68. The sliding column 64 is fixedly connected to the discharging slide plate 57 away from the side screen 56 On the one hand, the hinge rod 65 is fixedly connected to the rear side of the inner wall of the vibrating screen material box 5, the material receiving inclined plate 66 is hinged on the outer surface of the hinge rod 65, the pull rod 67 is hinged on the lower surface of the baffle 61, and the push rod 68 is fixedly connected to the lower surface of the baffle 61. The sliding column 64 is slidably connected to the inner surface of the delay transmission member 63, and the pull rod 67 is hinged on both sides of the material receiving inclined plate 66. A slide groove 1 is opened on both sides of the vibrating screen material box 5, and the L-shaped connecting block 62 is slidably connected to the inner surface of the slide groove 1. After the material receiving inclined plate 66 is tilted, the kudzu rice falling on the inclined surface of the material receiving inclined plate 66 slides deeper into the vibrating screen material box 5 to avoid the kudzu rice from accumulating just below the blanking frame 4, thereby making the kudzu rice distribution more uniform, which promotes the screening effect. The delay transmission member 63 is composed of a transmission plate and a transmission groove. The transmission groove is opened on the surface of the transmission plate, the surface of the sliding column 64 is slidably connected to the inner wall of the transmission groove, and the bottom end of the L-shaped connecting block 62 is fixedly connected to the top of the transmission plate.

[0026] Working principle: when the discharging slide plate 57 drives the sliding column 64 to move to the front end of the delay transmission member 63, the sliding column 64 drives the delay transmission member 63 to move forward, and at this time the delay transmission member 63 drives the L-shaped connecting block 62 to move forward, and the L-shaped connecting block 62 drives the baffle 61 to move forward, so that the kudzu rice blocked by the baffle 61 in the material discharge frame 4 falls into the vibrating screen material box 5, and when the discharging slide plate 57 drives the sliding column 64 to move backward to the rear end of the delay transmission member 63, it drives the delay transmission member 63 to move backward, and the delay transmission member 63 drives the L-shaped connecting block 62 and the baffle 61 to move backward to block the bottom of the material discharge frame 4. The kudzu vine root is allowed to enter the vibrating screen material box 5 intermittently in batches, thereby providing a certain screening time and making the screening effect better. The delayed transmission member 63 makes the baffle 61 stop for a certain period of time in the open and closed states, further improving the screening effect. When the baffle 61 moves forward, it drives the pull rod 67 to move forward, and the pull rod 67 pulls the bottom end of the material receiving inclined plate 66 to move forward, so that the material receiving inclined plate 66 tilts. After the material receiving inclined plate 66 tilts, the kudzu vine root that falls on the inclined surface of the material receiving inclined plate 66 slides deeper into the vibrating screen material box 5, avoiding the kudzu vine root from accumulating directly under the feeding frame 4, thereby making the kudzu vine root more evenly distributed and promoting the screening effect.

[0027] See also Figure 1-Figure 8 On the basis of the above embodiment, in another embodiment of the present invention, the dredging device 7 includes an upper cleaning brush 71, a lower cleaning brush 72, an upper slide rail 73, and a lower slide rail 74. The upper cleaning brush 71 is slidably connected to the upper surface of the coarse material screen 54, and the lower cleaning brush 72 is slidably connected to the upper surface of the fine material screen 55. The upper slide rail 73 is fixedly connected to the upper surface of the upper partition 51, and the lower slide rail 74 is fixedly connected to the upper surface of the lower partition 52. The two upper cleaning brushes 71 reciprocate back and forth to clean the coarse material screen 54, so that the kudzu vine stuck on the coarse material screen 54 falls off, preventing the coarse material screen 54 from being blocked, thereby improving the discharge efficiency. The dredging device 7 also includes an upper pushing frame 75, a first connecting plate 76, a lower pushing frame 77, and a second The connecting plate 78 and the upper push frame 75 are fixedly connected to the bottom end of the push rod 68, the first connecting plate 76 is fixedly connected between the front and rear upper push frames 75, the lower push frame 77 is fixedly connected to the bottom end of the upper push frame 75, the second connecting plate 78 is fixedly connected between the front and rear lower push frames 77, the upper cleaning brush 71 is fixedly connected to the lower surface of the upper push frame 75, the lower cleaning brush 72 is fixedly connected to the lower surface of the lower push frame 77, the upper push frame 75 is slidably connected to the inner surface of the upper slide rail 73, the lower push frame 77 is slidably connected to the inner surface of the lower slide rail 74, and the lower push frame 77 drives the lower cleaning brush 72 to clean the fine material stuck on the fine material screen 55, thereby completing multi-layer dredging, further improving the anti-blocking effect and discharging efficiency.

[0028] Working principle: the baffle 61 moves back and forth to drive the push rod 68 to move back and forth, the push rod 68 drives the upper push frame 75 to slide back and forth in the upper slide rail 73, the upper push frame 75 drives the upper push frame 75 on the front side to move back and forth through the first connecting plate 76, the two upper push frames 75 drive the two upper cleaning brushes 71 to move back and forth to clean the coarse material screen 54, so that the kudzu vine stuck on the coarse material screen 54 falls off, preventing the coarse material screen 54 from being blocked, thereby improving the discharging efficiency, the upper push frame 75 moves back and forth to drive the lower push frame 77 to slide back and forth in the lower slide rail 74, and the lower push frame 77 drives the lower cleaning brush 72 to clean the fine material stuck on the fine material screen 55, thereby completing multi-layer dredging, further improving the anti-blocking effect and discharging efficiency.

[0029] The present invention provides a multi-stage pulverizing and screening device for kudzu vine. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A multi-grade millet crushing and screening device, comprising a crushing barrel (1), characterized in that: The bottom surface of the crushing barrel (1) is fixedly connected to a support rod (2); the top of the crushing barrel (1) is rotatably connected to a crushing auger (3); the bottom end of the crushing barrel (1) is fixedly connected to a feeding frame (4); the bottom end of the feeding frame (4) is fixedly connected to a vibrating screen material box (5); the inner wall of the vibrating screen material box (5) is fixedly connected to an upper partition (51); the inner wall of the vibrating screen material box (5) is fixedly connected to a lower partition (52); the lower surface of the lower partition (52) is fixedly connected to a discharging frame (53); the lower surface of the upper partition (51) is fixedly connected to A coarse material screen (54) is provided, a fine material screen (55) is fixedly connected to the lower surface of the lower partition (52), side screens (56) are fixedly connected to both sides of the upper surface of the upper partition (51), a discharge slide plate (57) is slidably connected to both sides of the inner wall of the vibration screen material box (5), a linear motor (58) is fixedly connected to both sides of the outer surface of the vibration screen material box (5), a connecting slider (59) is slidably connected to the inner surface of the linear motor (58), and a side cleaning brush (510) is fixedly connected to the side of the discharge slide plate (57) close to the side screen (56); The vibrating screen material box (5) is provided with a delayed material discharge device (6) for delaying material discharge to avoid material feed blockage and provide sufficient material screening time, and the vibrating screen material box (5) is provided with a dredging device (7) for making material discharge smoother; The delayed unloading device (6) comprises a baffle (61), an L-shaped connecting block (62), and a delayed transmission member (63); the baffle (61) is slidably connected to the top surface of the inner wall of the vibrating screen material box (5); the L-shaped connecting block (62) is fixedly connected to both sides of the baffle (61); and the delayed transmission member (63) is fixedly connected to the bottom end of the L-shaped connecting block (62); The delayed unloading device (6) also includes a sliding column (64), a hinge rod (65), a material receiving inclined plate (66), a pull rod (67), and a push rod (68), wherein the sliding column (64) is fixedly connected to a side of the discharging slide plate (57) away from the side screen (56), the hinge rod (65) is fixedly connected to the rear side of the inner wall of the vibration screen material box (5), the material receiving inclined plate (66) is hinged to the outer surface of the hinge rod (65), the pull rod (67) is hinged to the lower surface of the baffle (61), and the push rod (68) is fixedly connected to the lower surface of the baffle (61); The sliding column (64) and the inner surface of the delay transmission member (63) are slidably connected, the pull rod (67) and the material receiving inclined plate (66) are hinged on both sides, a slide groove is opened on both sides of the vibration screen material box (5), and the L-shaped connecting block (62) and the inner surface of the slide groove are slidably connected, the delay transmission member (63) is composed of a transmission plate and a transmission groove, the transmission groove is opened on the surface of the transmission plate, the surface of the sliding column (64) is slidably connected to the inner wall of the transmission groove, and the bottom end of the L-shaped connecting block (62) is fixedly connected to the top of the transmission plate; The dredging device (7) comprises an upper cleaning brush (71), a lower cleaning brush (72), an upper slide rail (73) and a lower slide rail (74); the upper cleaning brush (71) is slidably connected to the upper surface of the coarse material screen (54); the lower cleaning brush (72) is slidably connected to the upper surface of the fine material screen (55); the upper slide rail (73) is fixedly connected to the upper surface of the upper partition (51); and the lower slide rail (74) is fixedly connected to the upper surface of the lower partition (52); The dredging device (7) further comprises an upper push frame (75), a first connecting plate (76), a lower push frame (77), and a second connecting plate (78); the upper push frame (75) is fixedly connected to the bottom end of the push rod (68); the first connecting plate (76) is fixedly connected between the front and rear upper push frames (75); the lower push frame (77) is fixedly connected to the bottom end of the upper push frame (75); and the second connecting plate (78) is fixedly connected between the front and rear lower push frames (77); The upper cleaning brush (71) is fixedly connected to the lower surface of the upper push frame (75), the lower cleaning brush (72) is fixedly connected to the lower surface of the lower push frame (77), the upper push frame (75) is slidably connected to the inner surface of the upper slide rail (73), and the lower push frame (77) is slidably connected to the inner surface of the lower slide rail (74).

2. The multi-stage pulverizing and screening device of claim 1, characterized in that: A motor is installed at the top of the crushing auger (3), and the motor is fixedly connected to the upper surface of the crushing barrel (1), the side screen (56) is fixedly connected to both sides of the upper surface of the lower partition (52), and the connecting slider (59) is fixedly connected to the side of the discharge slide plate (57) away from the side screen (56).

Images