Vibrating screen

Abstract

The utility model discloses a vibrating screen, which relates to the technical field of papermaking, and comprises a bottom plate, a screen plate fixing plate, a pulp collecting tank box, four damping mechanisms, an adjusting mechanism and a pulp scraping mechanism, the pulp collecting tank box is arranged on the bottom plate, the screen plate fixing plate is arranged above the pulp collecting tank box, the bottom of the inner wall of the output screen plate fixing plate is fixedly connected with a screen plate, and the bottom of the inner wall of the screen plate fixing plate is fixedly connected with the four damping mechanisms. The adjusting mechanisms are arranged at the tops of the two ends of the sieve plate fixing plate, the four damping mechanisms are arranged at the positions between the two ends of the sieve plate fixing plate and the corresponding adjusting mechanisms correspondingly and are close to the two sides of the sieve plate fixing plate, and the slurry scraping mechanism is arranged at the bottom of the sieve plate. And the paper pulp attached to the lower end face of the sieve plate is scraped, so that the paper pulp flows downwards more smoothly.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, and in particular to a vibrating screen. Background Technology

[0002] Recycling waste paper is an important way to regenerate resources. Currently, most commodity packaging uses paper-plastic composite materials, which are moisture-proof, waterproof, economical, and practical. However, after pulping, this material contains a lot of plastic flakes. In addition, the waste paper raw materials themselves also contain a certain amount of plastic, adhesive paper tape, foam plastic, and other light impurities, which not only reduce the quality of the finished paper but also affect subsequent production equipment.

[0003] When the pulp concentration is too high, or when it contains a lot of viscous substances or small fiber bundles, it is easy for them to accumulate on the screen, reducing the effective screening area of ​​the screen and lowering the screening efficiency. In addition, the pulp contains a lot of plant fibers, which makes the pulp less fluid. After screening, the pulp adheres to the lower end of the screen, hindering the pulp on the upper end of the screen from flowing downwards and affecting the screening efficiency of the vibrating screen. Utility Model Content

[0004] The purpose of this invention is to provide a vibrating screen to solve at least one of the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vibrating screen, comprising a base plate, a screen plate fixing plate, a slurry collection trough, four shock absorption mechanisms, an adjustment mechanism, and a slurry scraping mechanism;

[0006] The slurry collection tank is set on the base plate, the screen plate fixing plate is set above the slurry collection tank, the screen plate is fixedly connected to the bottom of the inner wall of the output screen plate fixing plate, the adjustment mechanism is set at the top of both ends of the screen plate fixing plate, the four shock absorption mechanisms are respectively set between the two ends of the screen plate fixing plate and the corresponding adjustment mechanism, and the four shock absorption mechanisms are close to both sides of the screen plate fixing plate, and the slurry scraping mechanism is set at the bottom of the screen plate.

[0007] The adjustment mechanism includes two inverted L-shaped support plates, a T-shaped slider, a servo motor, a second bidirectional motor, a second threaded rod, a support block, and a movable seat. The connecting walls of the two L-shaped support plates are respectively fixedly connected to the top walls of the base plate near both ends, and the two L-shaped support plates are symmetrically arranged. The second bidirectional motor is fixedly connected to the right side of the rear L-shaped support plate placement wall. One end of the second threaded rod is fixedly connected to the output end of the second bidirectional motor. The side wall of the T-shaped slider fixing wall is provided with a second threaded hole, and the second threaded rod is threadedly connected to the second threaded hole. The top wall of the rear L-shaped support plate placement wall is provided with a limiting groove, and the sliding wall of the T-shaped slider is slidably connected to the limiting groove. The servo motor is fixedly connected to the T-shaped slider fixing wall. The support block is fixedly connected to the top wall of the front L-shaped support plate placement wall. The top wall of the support block is provided with a pulley groove. The movable seat is located above the pulley groove, and the bottom wall of the movable seat is provided with a pulley that matches the pulley groove. A water spray mechanism is provided between the top wall of the movable seat and the servo motor.

[0008] The water spraying mechanism includes multiple high-pressure nozzles, a water supply pipe, a rotary joint, and a water inlet pipe. The rotary joint is fixedly connected to the top wall of the movable seat. One end of the water supply pipe is fixedly connected to the rotating part of the rotary joint, and the other end of the water supply pipe is fixedly connected to the output end of the servo motor. One end of the water inlet pipe is fixedly connected to the stationary part of the rotary joint, and the other end of the water inlet pipe is fixedly connected to a water pump connected to an external water source. The multiple high-pressure nozzles are equally spaced on the water supply pipe, and the distance between the two farthest high-pressure nozzles does not exceed the width of the screen plate.

[0009] Preferably, the scraping mechanism includes four fixed plates, a first sprocket, two second sprockets, a third sprocket, a first chain, a second chain, a first bidirectional motor, two first threaded rods, and a scraper. The four fixed plates are respectively fixedly connected to the four corners of the bottom wall of the screen plate fixed plate. Each of the four fixed plates has a mounting hole in the middle. Bearings are fixedly fitted on both ends of the two first threaded rods. The two bearings on the same end of the first threaded rod are embedded in the corresponding mounting holes of the fixed plates. The scraper has first threaded holes near both ends, and the two first threaded holes are threadedly connected to the corresponding first threaded rod at one end. One end of each of the two first threaded rods on the right side of the screen plate fixed plate extends outward. Two second sprockets are fixed to one end of two outwardly extending first threaded rods respectively. A second chain is sleeved on the two second sprockets and meshes with them. A first bidirectional motor is fixedly connected to the top wall of the base plate near the right side and is located directly below the rear first threaded rod. A third sprocket is fixedly connected to the output end of the first bidirectional motor. A first sprocket is fixedly sleeved on the first threaded rod between the second sprocket on the rear first threaded rod and the adjacent fixed plate. A first chain is sleeved on the third sprocket and the first sprocket and meshes with the third sprocket and the first sprocket. The top wall of the scraper is in contact with the bottom of the screen plate 8. The first sprocket, the second sprocket and the third sprocket are of the same specifications.

[0010] Preferably, the shock absorption mechanism includes a connecting plate, a column, and a spring. One side of the connecting plate is fixedly connected to the side wall of the screen plate fixing plate. One end of the column is fixedly connected to the top wall of the bottom plate, and the other end passes through the connecting plate. The column and the connecting plate are slidably connected. The spring is sleeved on the outer wall of the column. One end of the spring is fixedly connected to the top wall of the bottom plate, and the other end is fixedly connected to the bottom wall of the connecting plate.

[0011] Preferably, a vibration motor is fixedly connected to the middle position of both the front and rear side walls of the screen plate fixing plate.

[0012] Preferably, a feeding mechanism is provided on the right side of the bottom plate, and a discharge plate is provided adjacent to the feeding mechanism and the screen plate fixing plate, with the discharge plate located above the screen plate fixing plate.

[0013] Preferably, positioning plates are provided on the top wall of the bottom plate near the middle of both ends and the middle of the right side of the slurry collection tank.

[0014] Preferably, the left side wall of the slurry collection tank is provided with an inclined plate near the top wall, and the bottom wall of the slurry collection tank is provided with casters near the four corners, and the casters are equipped with self-braking.

[0015] Preferably, an L-shaped support plate positioned opposite to the second bidirectional motor is fixedly connected to a limiting plate on the wall, and the second threaded rod is rotatably connected to the limiting plate.

[0016] Preferably, the sieve plate has a row of filter holes.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. When fiber clumps accumulate on the screen plate, start the high-pressure nozzle to disperse the fibers on the screen plate. Then start the second bidirectional motor to move the T-shaped slider and drive the servo motor. Then start the servo motor to rotate the high-pressure nozzle to adjust the angle, so that the high-pressure nozzle can evenly disperse the fiber clumps in different areas. By dispersing the clumps on the screen plate, the pulp is less likely to accumulate on the screen plate, thus increasing the effective screening area of ​​the screen plate and improving screening efficiency.

[0019] 2. Start the first bidirectional motor to drive the first sprocket and the second sprocket to rotate synchronously, so that the two first threaded rods rotate synchronously, driving the scraper to move back and forth to scrape off the pulp attached to the lower end surface of the screen plate. By scraping off the pulp attached to the lower end surface of the screen plate, the pulp flows downward more smoothly, thereby improving the screening efficiency of the vibrating screen.

[0020] 3. By combining the methods of dispersing the clumps of fibers on the screen plate and scraping off the pulp adhering to the lower end of the screen plate, the screen plate is less prone to clogging during pulp screening, allowing the pulp to fall smoothly into the collection tank for collection, which greatly improves the practicality of the vibrating screen. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the vibration motor of this utility model;

[0023] Figure 3 This is a bottom view of the sieve plate fixing plate of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the positioning plate of this utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the inclined plate of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the scraper, connecting plate and fixing plate of this utility model;

[0027] Figure 7 This is a three-dimensional structural diagram of the movable base and T-shaped slider of this utility model;

[0028] Figure 8 This utility model Figure 3 Enlarged view of point A.

[0029] In the diagram: 1. Base plate; 2. Shock absorption mechanism; 21. Spring; 22. Connecting plate; 23. Column; 3. Feeding mechanism; 4. Scraping mechanism; 41. Fixing plate; 411. Bearing; 42. First sprocket; 43. First bidirectional motor; 44. First chain; 45. Second chain; 46. Second sprocket; 47. Scraper; 471. First threaded hole; 48. First threaded rod; 49. Third sprocket; 5. Adjusting mechanism; 51. L-shaped support plate; 511. Limiting groove; 52. Limiting... 53. Plate; 531. T-shaped slider; 532. Second threaded hole; 54. Servo motor; 55. Second threaded rod; 56. Second bidirectional motor; 57. Support block; 571. Pulley groove; 58. Moving seat; 581. Pulley; 6. Water spraying mechanism; 61. High-pressure nozzle; 62. Water supply pipe; 63. Rotary joint; 64. Water inlet pipe; 7. Discharge plate; 8. Screen plate; 9. Inclined plate; 10. Screen plate fixing plate; 11. Slurry collection tank; 12. Vibrating motor; 13. Universal wheel; 14. Positioning plate. Detailed Implementation

[0030] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0031] This utility model provides, for example Figure 1-8 The vibrating screen shown includes a base plate 1, a screen plate fixing plate 10, a slurry collection box 11, four shock absorption mechanisms 2, an adjustment mechanism 5, and a slurry scraping mechanism 4.

[0032] The slurry collection box 11 is set on the base plate 1, the screen plate fixing plate 10 is set above the slurry collection box 11, the screen plate 8 is fixedly connected to the bottom of the inner wall of the output screen plate fixing plate 10, the adjustment mechanism 5 is set at the top of both ends of the screen plate fixing plate 10, the four shock absorption mechanisms 2 are respectively set at the positions between the two ends of the screen plate fixing plate 10 and the corresponding adjustment mechanism 5, and the four shock absorption mechanisms 2 are close to the two sides of the screen plate fixing plate 10, and the scraping mechanism 4 is set at the bottom of the screen plate 8.

[0033] The adjustment mechanism 5 includes two inverted L-shaped support plates 51, a T-shaped slider 53, a servo motor 54, a second bidirectional motor 56, a second threaded rod 55, a support block 57, and a movable seat 58. The connecting walls of the two L-shaped support plates 51 are respectively fixedly connected to the top walls of the base plate 1 near both ends, and the two L-shaped support plates 51 are symmetrically arranged. The second bidirectional motor 56 is fixedly connected to the right side of the wall where the rear L-shaped support plate 51 is placed. One end of the second threaded rod 55 is fixedly connected to the output end of the second bidirectional motor 56. The side wall of the fixed wall of the T-shaped slider 53 is provided with a second threaded hole 531. The threaded rod 55 is threadedly connected to the second threaded hole 531. The top wall of the rear L-shaped support plate 51 is provided with a limiting groove 511 and the sliding wall of the T-shaped slider 53 is slidably connected to the limiting groove 511. The servo motor 54 is fixedly connected to the fixed wall of the T-shaped slider 53. The support block 57 is fixedly connected to the top wall of the front L-shaped support plate 51. The top wall of the support block 57 is provided with a pulley groove 571. The movable seat 58 is located above the pulley groove 571 and the bottom wall of the movable seat 58 is provided with a pulley 581 that matches the pulley groove 571. A water spraying mechanism 6 is provided between the top wall of the movable seat 58 and the servo motor 54.

[0034] The water spraying mechanism 6 includes multiple high-pressure nozzles 61, a water supply pipe 62, a rotary joint 63, and a water inlet pipe 64. The rotary joint 63 is fixedly connected to the top wall of the movable seat 58. One end of the water supply pipe 62 is fixedly connected to the rotating part of the rotary joint 63, and the other end of the water supply pipe 62 is fixedly connected to the output end of the servo motor 54. One end of the water inlet pipe 64 is fixedly connected to the stationary part of the rotary joint 63, and the other end of the water inlet pipe 64 is fixedly connected to the water pump of the external water source. The multiple high-pressure nozzles 61 are equally spaced on the water supply pipe 62, and the distance between the two farthest high-pressure nozzles 61 does not exceed the width of the screen plate 8.

[0035] When using this device, first connect it to a power source and connect one end of the inlet pipe 64 to an external water source (the inlet pipe 64 is fixedly connected to the outlet of the water pump of the external water source; the water pump is started by controlling the external controller of the device, and the water pump delivers water into the inlet pipe 64). Then, start the device through the external controller. The feeding mechanism 3 conveys the pulp through the discharge plate 7 to the screen plate 8 to remove large particles of impurities. At this time, the high-pressure nozzle 61 (the pressure of the high-pressure nozzle 61 can be controlled by the controller) and the second bidirectional motor 56 are activated. The high-pressure nozzle 61 disperses the pulp on the screen plate 8 to prevent the pulp from clumping. The second bidirectional motor 56 drives the second threaded rod 55 to rotate. Due to the limiting groove 511 limiting the T-shaped slider 53, the T-shaped slider 53 moves back and forth along the second threaded rod 55, driving the servo motor 54 to move. Due to the water supply pipe 62 One end is connected to the servo motor 54 and the other end is connected to the rotary joint 63. When the servo motor 54 moves, it will drive the moving seat 58 to move. The pulley 581 at the bottom of the moving seat 58 rolls in the pulley groove 571 on the support block 57, which facilitates the movement of the moving seat 58, thereby moving the high-pressure nozzle 61 to disperse the pulp at different positions on the screen plate 8. Then, the servo motor 54 (which can be adjusted to different rotation angles through pre-set commands) is started to drive the water pipe 62 to rotate, adjusting different angles to better disperse the pulp evenly. Then, the first bidirectional motor 43 is started to drive the third sprocket 49 to rotate. Under the action of the first chain 44 and the second chain 45, the two first threaded rods 48 rotate synchronously, causing the scraper 47 to move back and forth to scrape off the pulp attached to the lower end face of the screen plate 8, so that the pulp falls smoothly into the pulp collection box 11.

[0036] The scraping mechanism 4 includes four fixed plates 41, a first sprocket 42, two second sprockets 46, a third sprocket 49, a first chain 44, a second chain 45, a first bidirectional motor 43, two first threaded rods 48, and a scraper 47. The four fixed plates 41 are fixedly connected to the four corners of the bottom wall of the screen plate fixing plate 10. Each of the four fixed plates 41 has a mounting hole in the middle. Bearings 411 are fixedly fitted on the two first threaded rods 48 near both ends. The two bearings 411 on the same end of the first threaded rod 48 are embedded in the mounting holes of the corresponding fixed plates 41. The scraper 47 has first threaded holes 471 near both ends, and the two first threaded holes 471 are threadedly connected to the first threaded rods 48 at the corresponding ends. One end of the two first threaded rods 48 on the right side of the screen plate fixing plate 10 extends outward. The second sprocket 46 is fixed to one end of the two outwardly extending first threaded rods 48. The second chain 45 is sleeved on the two second sprockets 46 and meshes with them. The first bidirectional motor 43 is fixedly connected to the top wall of the base plate 1 near the right side and is located directly below the rear first threaded rod 48. The output end of the first bidirectional motor 43 is fixedly connected to the third sprocket 49. The second sprocket 46 on the rear first threaded rod 48 and the first threaded rod 48 between the adjacent fixed plate 41 are fixedly sleeved with the first sprocket 42. The first chain 44 is sleeved on the third sprocket 49 and the first sprocket 42 and meshes with the third sprocket 49 and the first sprocket 42. The top wall of the scraper 47 is in contact with the bottom of the screen plate 8. The first sprocket 42, the second sprocket 46 and the third sprocket 49 are of the same specifications.

[0037] The controller starts the first bidirectional motor 43, which drives the third sprocket 49 to rotate. Under the action of the first chain 44, the third sprocket 49 drives the first sprocket 42 to rotate. The first sprocket 42 drives the first threaded rod 48 at the rear end to rotate. The first threaded rod 48 at the rear end drives the second sprocket 46 at the rear end to rotate. Under the action of the second chain 45, the second sprocket 46 at the rear end drives the second sprocket 46 at the front end to rotate, so that the two first threaded rods 48 rotate synchronously. Under the action of the first threaded hole 471 on the scraper 47, the rotation of the two first threaded rods 48 will cause the scraper 47 to move along the first threaded rods 48, thereby scraping off the pulp attached to the lower end face of the screen plate 8. The bearing 411 facilitates the rotation of the first threaded rods 48. The fixing plate 41 fixes the first threaded rods 48 to the bearing 411. The first sprocket 42, the second sprocket 46 and the third sprocket 49 are of the same specification, which facilitates their synchronous rotation.

[0038] The shock absorption mechanism 2 includes a connecting plate 22, a column 23, and a spring 21. One side of the connecting plate 22 is fixedly connected to the side wall of the screen plate fixing plate 10. One end of the column 23 is fixedly connected to the top wall of the bottom plate 1, and the other end passes through the connecting plate 22. The column 23 is slidably connected to the connecting plate 22. The spring 21 is sleeved on the outer wall of the column 23. One end of the spring 21 is fixedly connected to the top wall of the bottom plate 1, and the other end is fixedly connected to the bottom wall of the connecting plate 22. Vibration motors 12 are fixedly connected to the middle positions of the front and rear side walls of the screen plate fixing plate 10. A feeding mechanism 3 is provided on the right side of the bottom plate 1. A discharge plate 7 is provided adjacent to the screen plate fixing plate 10 and is located above the screen plate fixing plate 10. The screen plate 8 has a row of filter holes.

[0039] When the vibrating motor 12 is working, the screen plate fixing plate 10 and the screen plate 8 will generate strong vibrations. The feeding mechanism 3 will draw the pulp out from the storage area and stably transport it from the discharge plate 7 to the screen plate 8 for screening. The pulp will then fall from the filter holes on the screen plate 8 into the pulp collection box 11. The cooperation of the connecting plate 22, the column 23 and the spring 21 can provide stable support for the screen plate fixing plate 10.

[0040] Positioning plates 14 are provided on the top wall of the bottom plate 1 at the middle of both ends and the middle of the right side of the slurry collection box 11. An inclined plate 9 is provided on the left side wall of the slurry collection box 11 near the top wall. Universal wheels 13 are provided on the bottom wall of the slurry collection box 11 near the four corners, and the universal wheels 13 are equipped with self-braking.

[0041] The positioning plate 14 limits the position of the slurry collection box 11 so that the slurry collection box 11 is placed directly below the screen plate 8. When in use, the slurry collection box 11 is pushed under the screen plate 8 by the action of the caster wheel 13. After it is placed, the caster wheel 13 is locked to prevent the slurry collection box 11 from moving and causing the position to shift. A collection box for collecting impurities is placed on one side of the inclined plate 9. The inclined plate 9 facilitates the sliding of impurities falling from the screen plate 8 into the collection box for collection.

[0042] An L-shaped support plate 51, positioned opposite to the second bidirectional motor 56, is fixedly connected to a limiting plate 52 on the wall, and a second threaded rod 55 is rotatably connected to the limiting plate 52.

[0043] The limiting plate 52 supports the second threaded rod 55 on the one hand, improving its stability, and on the other hand, facilitates the rotation of the second threaded rod 55.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibrating screen, characterized in that: It includes a base plate (1), a screen plate fixing plate (10), a slurry collection box (11), four shock absorption mechanisms (2), an adjustment mechanism (5), and a slurry scraping mechanism (4); The slurry collection box (11) is set on the base plate (1), the screen plate fixing plate (10) is set above the slurry collection box (11), the bottom of the inner wall of the output screen plate fixing plate (10) is fixedly connected to the screen plate (8), the adjustment mechanism (5) is set at the top of both ends of the screen plate fixing plate (10), the four shock absorption mechanisms (2) are respectively set at the positions between the two ends of the screen plate fixing plate (10) and the corresponding adjustment mechanism (5), and the four shock absorption mechanisms (2) are close to the two sides of the screen plate fixing plate (10), and the scraping mechanism (4) is set at the bottom of the screen plate (8); The adjustment mechanism (5) includes two inverted L-shaped support plates (51), a T-shaped slider (53), a servo motor (54), a second bidirectional motor (56), a second threaded rod (55), a support block (57), and a moving seat (58). The connecting walls of the two L-shaped support plates (51) are respectively fixedly connected to the top walls of the base plate (1) near both ends, and the two L-shaped support plates (51) are symmetrically arranged. The second bidirectional motor (56) is fixedly connected to the right side of the rear L-shaped support plate (51) placement wall. One end of the second threaded rod (55) is fixedly connected to the output end of the second bidirectional motor (56). The side wall of the T-shaped slider (53) fixing wall is provided with a second threaded hole (531). The second threaded rod (54) 55) is threaded to the second threaded hole (531). The top wall of the L-shaped support plate (51) at the rear end is provided with a limiting groove (511) and the sliding wall of the T-shaped slider (53) is slidably connected to the limiting groove (511). The servo motor (54) is fixedly connected to the fixed wall of the T-shaped slider (53). The support block (57) is fixedly connected to the top wall of the L-shaped support plate (51) at the front end. The top wall of the support block (57) is provided with a pulley groove (571). The movable seat (58) is set above the pulley groove (571) and the bottom wall of the movable seat (58) is provided with a pulley (581) that matches the pulley groove (571). A water spraying mechanism (6) is provided between the top wall of the movable seat (58) and the servo motor (54). The water spraying mechanism (6) includes multiple high-pressure nozzles (61), a water supply pipe (62), a rotary joint (63), and an inlet pipe (64). The rotary joint (63) is fixedly connected to the top wall of the movable seat (58). One end of the water supply pipe (62) is fixedly connected to the rotating part of the rotary joint (63), and the other end of the water supply pipe (62) is fixedly connected to the output end of the servo motor (54). One end of the inlet pipe (64) is fixedly connected to the stationary part of the rotary joint (63), and the other end of the inlet pipe (64) is fixedly connected to the water pump of the external water source. The multiple high-pressure nozzles (61) are equally spaced on the water supply pipe (62), and the distance between the two farthest high-pressure nozzles (61) does not exceed the width of the screen plate (8).

2. A vibrating screen according to claim 1, characterized in that: The scraping mechanism (4) includes four fixed plates (41), a first sprocket (42), two second sprockets (46), a third sprocket (49), a first chain (44), a second chain (45), a first bidirectional motor (43), two first threaded rods (48), and a scraper (47). The four fixed plates (41) are respectively fixedly connected to the four corners of the bottom wall of the screen plate fixing plate (10). Each of the four fixed plates (41) has a mounting hole in the middle. Bearings (411) are fixedly fitted on the two first threaded rods (48) near both ends. The two bearings (411) on the first threaded rod (48) at the same end are embedded in the mounting holes of the corresponding fixed plates (41). The scraper (47) has a first threaded hole (471) near both ends, and the two first threaded holes (471) are respectively threaded to the first threaded rod (48) at the corresponding end. One end of the two first threaded rods (48) on the right side of the screen plate fixing plate (10) extends outward. The sprockets (46) are fixed to one end of the two outwardly extending first threaded rods (48), the second chain (45) is sleeved on the two second sprockets (46) and meshes with the two second sprockets (46), the first bidirectional motor (43) is fixedly connected to the top wall of the base plate (1) near the right side and the first bidirectional motor (43) is located directly below the rear first threaded rod (48), the output end of the first bidirectional motor (43) is fixedly connected to the third sprocket (49), and the rear first threaded rod... A first sprocket (42) is fixedly sleeved on the first threaded rod (48) between the second sprocket (46) on the rod (48) and the adjacent fixed plate (41). The first chain (44) is sleeved on the third sprocket (49) and the first sprocket (42), and the first chain (44) meshes with the third sprocket (49) and the first sprocket (42). The top wall of the scraper (47) is in contact with the bottom of the screen plate (8). The first sprocket (42), the second sprocket (46) and the third sprocket (49) are of the same specifications.

3. A vibrating screen according to claim 1, characterized in that: The shock absorption mechanism (2) includes a connecting plate (22), a column (23) and a spring (21). One side of the connecting plate (22) is fixedly connected to the side wall of the sieve plate fixing plate (10). One end of the column (23) is fixedly connected to the top wall of the bottom plate (1) and the other end passes through the connecting plate (22). The column (23) is slidably connected to the connecting plate (22). The spring (21) is sleeved on the outer wall of the column (23). One end of the spring (21) is fixedly connected to the top wall of the bottom plate (1) and the other end is fixedly connected to the bottom wall of the connecting plate (22).

4. A vibrating screen according to claim 1, characterized in that: Vibration motors (12) are fixedly connected to the middle positions of the front and rear side walls of the screen plate fixing plate (10).

5. A vibrating screen according to claim 1, characterized in that: The bottom plate (1) is provided with a feeding mechanism (3) on the right side. The feeding mechanism (3) is provided with a discharge plate (7) adjacent to the screen plate fixing plate (10) and the discharge plate (7) is located above the screen plate fixing plate (10).

6. A vibrating screen according to claim 1, characterized in that: Positioning plates (14) are provided on the top wall of the bottom plate (1) at the middle of both ends and the middle of the right side of the slurry collection box (11).

7. A vibrating screen according to claim 1, characterized in that: The slurry collection box (11) has an inclined plate (9) on the left side wall near the top wall, and the bottom wall of the slurry collection box (11) is provided with casters (13) near the four corners, and the casters (13) have self-braking.

8. A vibrating screen according to claim 1, characterized in that: An L-shaped support plate (51) positioned opposite to the second bidirectional motor (56) is fixedly connected to a limiting plate (52) on the wall, and the second threaded rod (55) is rotatably connected to the limiting plate (52).

9. A vibrating screen according to claim 1, characterized in that: The sieve plate (8) has a row of filter holes.

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