A screening device and method provided with a cyclic fluctuation structure

Abstract

The present invention discloses a screening device and method provided with a cyclic fluctuation structure, including a main body of the screening device, and a cyclic filtration component and a vibrating screen component located inside the main body of the screening device; two groups of the vibrating screen components are provided, and a fixing member is arranged below one of the vibrating screen components. A elastic rope is fixed below the fixing member, and a rubber anti-blocking ball is connected below the elastic rope. A feed inlet is formed on the upper left side of the main body of the screening device, and a flushing component is installed inside the feed inlet. The vibrating screen component of the present invention can drive the screening plate to move up, down, left and right under the action of a vibrating motor, and screen the garbage according to the shape and size of the garbage. Flat industrial garbage such as films moves to the left, while three-dimensional garbage moves to the right along the screening plate. Using this principle and cooperating with the inclined filter plate 1 and filter plate 2 to achieve cyclic fluctuation operation, making the entire screening process more thorough.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial waste recycling, and specifically to a screening device and method with a cyclic fluctuation structure. Background Art

[0002] Industrial waste refers to solid waste discharged during the production processes of machinery, light industry and other industries. Such as cutting chips, grinding chips, waste foundry sand, etc. in the machinery industry, activated carbon slag in the food industry, bricks, tiles, crushed gravel, concrete blocks, etc. in the silicate industry and construction industry. When recycling industrial waste, a screening device is used to screen the waste. During the screening process of the sorting equipment, the material first passes through a drum screen and then through a bounce screen, both of which can screen the small-sized materials in the material to fully screen the small-sized materials. During the screening process of the sorting equipment, the materials under the drum screen, the materials under the bounce screen, and the materials on the 3D screen are all screened by a magnetic separator and an eddy current separator to fully screen the metal materials.

[0003] After retrieval, a screening device with the publication number of CN108452945B, more specifically an efficient garbage screening structure, includes an overall machine bracket, a power mechanism, an iron separation device, a control mechanism, a sliding device, a connecting rod, a permanent magnet suction cup, a transmission mechanism, a heavy and light separation mechanism, an iron storage box, a heavy storage box and a light storage box. The power mechanism is fixedly connected to the overall machine bracket, the iron separation device is rotatably connected to the overall machine bracket, the power mechanism and the iron separation device are connected by a belt drive, the control mechanism is rotatably connected to the overall machine bracket, the control mechanism and the iron separation device are connected by a belt drive, the sliding device is slidably connected to the overall machine bracket. The magnetic force of the permanent magnet suction cup in the iron separation device can be controlled through the control mechanism, and the iron separation device can effectively separate the iron items in the garbage. The heavy and light separation mechanism can classify non-ferrous products into heavy and light ones by using wind force.

[0004] After retrieval, a screening device for industrial waste recycling and treatment with the publication number of CN212190281U includes a mounting base. There are four mounting bases which are fixedly connected to the working surface in a rectangular shape. A conveyor belt is installed at the upper ends of the four mounting bases. A screening dish is arranged at the upper end of the conveyor belt. One side of the inner top surface of the screening dish is fixedly connected with a disperser. A cleaning liquid installation pipe is arranged on one side of the disperser close to the center of the screening dish. The bottom end of the cleaning liquid installation pipe is connected with a water mist nozzle in a penetrating manner. A cleaning liquid storage bucket is arranged at the upper end of the cleaning liquid installation pipe. One side of the lower end of the cleaning liquid storage bucket is connected with a conduit 1 in a penetrating manner, and a booster pump 1 is installed on the conduit 1. A clean water installation dish is arranged on the side of the cleaning liquid installation pipe away from the disperser. The structure of the present utility model is compact and reasonably designed, which can realize the rapid screening of industrial waste, greatly improve the screening efficiency of industrial waste, and remove the industrial oil and dust on the surface of industrial waste before screening, making the reprocessing of industrial recycled waste more convenient.

[0005] Most of the existing screening devices can only perform screening once, and the screening is not thorough, and it is not convenient to realize circular screening inside the screening device. Therefore, we propose a screening device and method with a circular fluctuation structure. Summary of the Invention

[0006] The purpose of the present invention is to provide a screening device and method with a circular fluctuation structure to solve the problems raised in the above background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solutions: A screening device with a circular fluctuation structure includes a screening device main body, and a circular filtration component and a vibrating screen component located inside the screening device main body;

[0008] There are two groups of the vibrating screen components, and a fixing member is arranged below one of the vibrating screen components. A elastic rope is fixed below the fixing member, and a rubber anti-blocking ball is connected below the elastic rope. A feeding port is opened on the upper left side of the screening device main body, and a flushing component is installed inside the feeding port. A metal adsorption component is arranged above the vibrating screen component. An outlet two is arranged on the lower right side of the screening device main body, and an outlet three is arranged on the right side of the outlet two. Hatches are hinged at the front ends of both the outlet three and the outlet two. A 2D outlet is arranged on the left side of the circular filtration component. An outlet one is arranged on the upper right side of the screening device main body. A sewage tank is arranged on the lower left side of the screening device main body;

[0009] The circular filtration component includes a filtration tank. A filter plate one is installed inside the filtration tank, and a filter plate two is arranged below the filter plate one. A support is arranged between the filter plate two and the filter plate one, and a connecting rod is installed inside the support. A driving shaft is installed at the input end of the connecting rod, and an adjusting motor is arranged at the end of the driving shaft;

[0010] The metal adsorption component includes a belt motor. The output end of the belt motor is connected with a driving wheel, and a driven wheel is arranged on one side of the driving wheel. Transmission belts are arranged on the surfaces of both the driven wheel and the driving wheel, and a transmission rod is fixed on the surface of the transmission belt. An electromagnet is fixed outside the transmission rod, and a limiting sliding groove is opened at the connection between the transmission rod and the screening device main body;

[0011] The vibrating screen component includes a vibrating motor. The output end of the vibrating motor is connected with an eccentric wheel, and an eccentric shaft is arranged at the output end of the eccentric wheel. A vibrating rod is sleeved on the surface of the eccentric shaft, and a screening plate is connected to one side of the vibrating rod;

[0012] The heights of the filter plate two and the filter plate one are respectively adapted to the heights of the two groups of vibrating screen components. Both the filter plate two and the filter plate one form a rotating structure through the support, the connecting rod, the driving shaft and the adjusting motor.

[0013] Preferably, the flushing assembly includes a connector, one end of the connector is provided with a water inlet pipe, and a water outlet nozzle is arranged at the end of the water inlet pipe.

[0014] Preferably, the connector is interconnected with the water outlet nozzle through the water inlet pipe, and the water outlet nozzles are evenly distributed at equal intervals along the inner wall of the feed inlet.

[0015] Preferably, the transmission rod moves left and right on the main body of the screening device through the limiting sliding groove, and the transmission rod is parallel to the vibrating screen assembly. The driving wheel drives the driven wheel through the transmission belt for belt transmission.

[0016] Preferably, the size of the sieve holes on the top screening plate is larger than the size of the sieve holes on the bottom screening plate.

[0017] Preferably, a screening method for a screening device provided with a cyclic fluctuation structure includes the following steps:

[0018] S1. Preliminary filtration: The adjusting motor drives the connecting rod to drive the bracket to rotate through the driving shaft, so that both the first filter plate and the second filter plate are tilted, and the height of the right end is the same as that of the screening plate. Industrial waste is put into the filtering bin through the feed inlet and can be filtered by the first filter plate and the second filter plate and then put onto the screening plate for screening;

[0019] S2. Vibrating screening: The vibrating motor drives the vibrating rod to vibrate through the eccentric shaft on the eccentric wheel, so that the screening plate moves up, down, left and right, and vibrates and screens the industrial waste. The two groups of screening plates can classify and screen the waste with different volume sizes;

[0020] S3. Cyclic fluctuation: The initially screened 2D waste moves to the left and re-enters the first filter plate and the second filter plate. After being filtered again, the 2D waste is put onto the screening plate again. After several cycles, the screening work is completed until;

[0021] S4. Metal screening: The belt motor drives the transmission rod to move left and right through the driving wheel, the driven wheel and the transmission belt. After the electromagnet is energized, it generates magnetism, adsorbs the metal in the industrial waste, and transports it to the first discharge port. After the electromagnet is powered off, the separation can be completed;

[0022] S5. Waste discharge: The adjusting motor drives the connecting rod to drive the bracket to rotate through the driving shaft, so that the first filter plate and the second filter plate rotate to the left, and the left end is adapted to the 2D discharge port, and the 2D waste is discharged. The particulate matter is discharged into the second discharge port, and other large-sized wastes are put into the third discharge port and the first discharge port respectively according to the waste volume.

[0023] It can be seen from the above description that through the above technical solutions of the present application, the technical problems to be solved by the present application can surely be solved.

[0024] Meanwhile, through the above technical solutions, the present invention has at least the following beneficial effects:

[0025] Through the provided circulating filtration component, the present invention can preliminarily filter industrial waste, and Filter Plate 1 and Filter Plate 2 can be adjusted in angle under the action of the adjustment motor, facilitating subsequent circulating dial screening and discharging the 2D waste on Filter Plate 1 and Filter Plate 2.

[0026] Through the provided flushing component, the present invention can spray water into the feeding port through the water outlet nozzles to wash and reduce the dust in the industrial waste input into the feeding port. Finally, the sewage flows into the sewage bin along Filter Plate 1 and Filter Plate 2.

[0027] Through the provided vibrating screen component, the present invention can drive the screening plate to move up, down, left, and right under the action of the vibrating motor, screen the waste according to the shape and size of the waste. Flat industrial waste such as films moves to the left, while three-dimensional waste moves to the right along the screening plate. Using this principle and cooperating with the inclined Filter Plate 1 and Filter Plate 2 to achieve circulating fluctuation work, making the entire screening process more thorough. Meanwhile, when the screening plate vibrates, the rubber anti-blocking balls can bounce irregularly between the two groups of screening plates to prevent the screening plate from being blocked.

[0028] Through the provided metal adsorption component, the present invention can drive the electromagnet to move left and right under the action of the belt motor. After the electromagnet is energized, it generates magnetism to adsorb the metal in the industrial waste, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0031] Figure 3 is a partial structural schematic diagram of the metal adsorption component of the present invention;

[0032] Figure 4 is of the present invention Figure 1 the enlarged structural schematic diagram at A in;

[0033] Figure 5 is a top view structural schematic diagram of the vibrating screen component of the present invention;

[0034] Figure 6 is of the present invention Figure 2 the enlarged structural schematic diagram at B in.

[0035] In the figure: 1. Main body of the screening device; 2. Feed inlet; 3. First discharge outlet; 4. Circulating filtration component; 401. Adjusting motor; 402. First filter plate; 403. Bracket; 404. Connecting rod; 405. Driving shaft; 406. Second filter plate; 407. Filter bin; 5. Flushing component; 501. Connector; 502. Water inlet pipe; 503. Water outlet nozzle; 6. Metal adsorption component; 601. Limit chute; 602. Driven wheel; 603. Transmission belt; 604. Transmission rod; 605. Driving wheel; 606. Belt motor; 607. Electromagnet; 7. Bin door; 8. Vibration sieve component; 801. Vibration motor; 802. Eccentric wheel; 803. Eccentric shaft; 804. Vibration rod; 805. Screening plate; 9. Elastic cord; 10. Rubber anti-blocking ball; 11. Sewage bin; 12. Second discharge outlet; 13. Third discharge outlet; 14. Fixing piece; 15. 2D discharge outlet. Detailed implementation mode

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1

[0038] As shown in the attached Figure 1 and Figure 2 figure, the present invention provides a technical solution: a screening device with a circulating fluctuation structure, including the main body 1 of the screening device, and the circulating filtration component 4 and the vibration sieve component 8 located inside the main body 1 of the screening device;

[0039] There are two sets of vibrating screen assemblies 8, and a fixing member 14 is provided below one of the vibrating screen assemblies 8. A elastic rope 9 is fixed below the fixing member 14, and a rubber anti-blocking ball 10 is connected below the elastic rope 9. While the screening plate 805 vibrates, the rubber anti-blocking ball 10 can bounce irregularly between the two screening plates 805 to prevent the screening plate 805 from being blocked. On the upper left side of the screening device main body 1, a feed inlet 2 is provided, and a flushing assembly 5 is installed inside the feed inlet 2. A metal adsorption assembly 6 is provided above the vibrating screen assembly 8. On the lower right side of the screening device main body 1, a second discharge port 12 is provided, and a third discharge port 13 is provided on the right side of the second discharge port 12. Hatches 7 are hinged to the front ends of both the third discharge port 13 and the second discharge port 12. A 2D discharge port 15 is provided on the left side of the circulating filtration assembly 4. A first discharge port 3 is provided above the right side of the screening device main body 1. A sewage bin 11 is provided on the lower left side of the screening device main body 1. The adjusting motor 401 drives the connecting rod 404 to drive the bracket 403 to rotate through the drive shaft 405, so that the first filter plate 402 and the second filter plate 406 rotate to the left, and the left end is adapted to the 2D discharge port 15 to discharge 2D garbage, while the particulate matter is discharged into the second discharge port 12, and other large-sized garbage is respectively put into the third discharge port 13 and the first discharge port 3 according to the volume of the garbage.

[0040] Embodiment 2

[0041] The solution in Embodiment 1 will be further introduced below in combination with the specific working mode, as detailed in the following description:

[0042] As Figure 2 shown, as a preferred implementation method, on the basis of the above method, further, the circulating filtration assembly 4 includes a filtration bin 407. A first filter plate 402 is installed inside the filtration bin 407, and a second filter plate 406 is provided below the first filter plate 402. A bracket 403 is provided between the second filter plate 406 and the first filter plate 402, and a connecting rod 404 is installed inside the bracket 403. The input end of the connecting rod 404 is installed with a drive shaft 405, and an adjusting motor 401 is provided at the end of the drive shaft 405. The heights of the second filter plate 406 and the first filter plate 402 are respectively adapted to the heights of the two vibrating screen assemblies 8. Both the second filter plate 406 and the first filter plate 402 form a rotating structure with the adjusting motor 401 through the bracket 403, the connecting rod 404, and the drive shaft 405. The adjusting motor 401 drives the connecting rod 404 to drive the bracket 403 to rotate through the drive shaft 405, so that the first filter plate 402 and the second filter plate 406 are simultaneously tilted, and the right end is at the same height as the screening plate 805. Industrial waste is put into the filtration bin 407 through the feed inlet 2 and can be filtered by the first filter plate 402 and the second filter plate 406 and then put onto the screening plate 805 for screening.

[0043] As Figure 1 、 Figure 2 andFigure 4 As shown, as a preferred embodiment, on the basis of the above method, further, the flushing assembly 5 includes a connector 501. One end of the connector 501 is equipped with a water inlet pipe 502, and the end of the water inlet pipe 502 is provided with a water outlet nozzle 503. The connector 501 is interconnected with the water outlet nozzle 503 through the water inlet pipe 502, and the water outlet nozzles 503 are evenly distributed at equal intervals along the inner wall of the feed inlet 2. The external water tank is connected to the water inlet pipe 502 through the connector 501, and water is sprayed out through the water outlet nozzles 503 to flush and reduce dust of the dust contained in the industrial waste. The sewage flows into the sewage bin 11 along the first filter plate 402 and the second filter plate 406.

[0044] As Figure 1 , Figure 3 and Figure 6 As shown, as a preferred embodiment, on the basis of the above method, further, the metal adsorption assembly 6 includes a belt motor 606. The output end of the belt motor 606 is connected to a driving wheel 605, and a driven wheel 602 is arranged on one side of the driving wheel 605. Transmission belts 603 are arranged on the surfaces of the driven wheel 602 and the driving wheel 605, and a transmission rod 604 is fixed on the surface of the transmission belt 603. An electromagnet 607 is fixed outside the transmission rod 604, and a limiting sliding groove 601 is opened at the connection between the transmission rod 604 and the screening device main body 1. The transmission rod 604 moves left and right on the screening device main body 1 through the limiting sliding groove 601, and the transmission rod 604 is parallel to the vibrating screen assembly 8. The driving wheel 605 realizes belt transmission with the driven wheel 602 through the transmission belt 603. The belt motor 606 drives the transmission rod 604 to move left and right through the driving wheel 605, the driven wheel 602 and the transmission belt 603. After the electromagnet 607 is energized, it generates magnetism to adsorb the metal in the industrial waste and transmit it to the first discharge port 3. After the electromagnet 607 is powered off, the separation can be completed.

[0045] As Figure 2 and Figure 5As shown, as a preferred embodiment, on the basis of the above method, further, the vibrating screen assembly 8 includes a vibrating motor 801, and the output end of the vibrating motor 801 is connected to an eccentric wheel 802, and the output end of the eccentric wheel 802 is provided with an eccentric shaft 803. A vibrating rod 804 is sleeved on the surface of the eccentric shaft 803, and a screening plate 805 is connected to one side of the vibrating rod 804. The size of the sieve holes on the top screening plate 805 is larger than that on the bottom screening plate 805. The vibrating motor 801 drives the vibrating rod 804 to vibrate through the eccentric shaft 803 on the eccentric wheel 802, causing the screening plate 805 to move up, down, left, and right, vibrating and screening industrial waste. The two screening plates 805 can classify and screen waste with different volume sizes. The initially screened 2D waste moves leftward and re-enters the first filter plate 402 and the second filter plate 406. After the 2D waste is filtered again, it is put back onto the screening plate 805. After several cycles, the screening work is completed until the screening work is completed.

[0046] As Figures 1 - 6 shown, as a preferred embodiment, on the basis of the above method, further, a screening method for a screening device with a circulating fluctuation structure includes the following steps:

[0047] S1. Preliminary filtration: The adjustment motor 401 drives the connecting rod 404 to drive the bracket 403 to rotate through the drive shaft 405, causing the first filter plate 402 and the second filter plate 406 to tilt simultaneously, with the right end at the same height as the screening plate 805. Industrial waste is fed into the filter chamber 407 through the feed port 2 and can be filtered through the first filter plate 402 and the second filter plate 406 and then put onto the screening plate 805 for screening;

[0048] S2. Vibrating screening: The vibrating motor 801 drives the vibrating rod 804 to vibrate through the eccentric shaft 803 on the eccentric wheel 802, causing the screening plate 805 to move up, down, left, and right, vibrating and screening industrial waste. The two screening plates 805 can classify and screen waste with different volume sizes;

[0049] S3. Circulating fluctuation: The initially screened 2D waste moves leftward and re-enters the first filter plate 402 and the second filter plate 406. After the 2D waste is filtered again, it is put back onto the screening plate 805. After several cycles, the screening work is completed until the screening work is completed;

[0050] S4. Metal screening: The belt motor 606 drives the transmission rod 604 to move left and right through the driving wheel 605, the driven wheel 602, and the transmission belt 603. After the electromagnet 607 is energized, it generates magnetism, adsorbs the metal in the industrial waste, and transports it to the first discharge port 3. After the electromagnet 607 is de-energized, the separation can be completed;

[0051] S5. Garbage discharge: The adjustment motor 401 drives the connecting rod 404 to drive the bracket 403 to rotate through the drive shaft 405, causing the first filter plate 402 and the second filter plate 406 to rotate to the left. The left end is adapted to the 2D discharge port 15 to discharge 2D garbage, while the particulate matter is discharged into the second discharge port 12, and other large-sized garbage is respectively put into the third discharge port 13 and the first discharge port 3 according to the garbage volume.

[0052] As can be seen from the above:

[0053] The technical problem of the present invention is that most of the existing screening devices can only perform one screening, the screening is not thorough, and it is not convenient to realize cyclic screening inside the screening device; the technical solutions of the above-mentioned embodiments are adopted. At the same time, the implementation process of the above technical solutions is as follows:

[0054] The external water tank is connected to the water inlet pipe 502 through the connector 501, and sprays water outward through the water outlet nozzle 503 to wash and reduce the dust contained in the industrial garbage. The sewage flows into the sewage bin 11 along the first filter plate 402 and the second filter plate 406. The adjustment motor 401 drives the connecting rod 404 to drive the bracket 403 to rotate through the drive shaft 405, causing the first filter plate 402 and the second filter plate 406 to tilt simultaneously, and the height of the right end is the same as that of the screening plate 805. The industrial garbage is put into the filter bin 407 through the feed port 2 and can be filtered by the first filter plate 402 and the second filter plate 406 and then put on the screening plate 805 for screening; the vibration motor 801 drives the vibration rod 804 to vibrate through the eccentric shaft 803 on the eccentric wheel 802, causing the screening plate 805 to move up, down, left and right to vibrate and screen the industrial garbage. The two groups of screening plates 805 can classify and screen the garbage with different volume sizes; the initially screened 2D garbage moves to the left and re-enters the first filter plate 402 and the second filter plate 406, is filtered again for the 2D garbage and then put on the screening plate 805 again. After several cycles, the screening work is completed; the belt motor 606 drives the transmission rod 604 to move left and right through the driving wheel 605, the driven wheel 602 and the transmission belt 603. After the electromagnet 607 is energized, it generates magnetism to adsorb the metal in the industrial garbage and transmits it to the first discharge port 3. After the electromagnet 607 is powered off, the separation can be completed; the adjustment motor 401 drives the connecting rod 404 to drive the bracket 403 to rotate through the drive shaft 405, causing the first filter plate 402 and the second filter plate 406 to rotate to the left. The left end is adapted to the 2D discharge port 15 to discharge 2D garbage, while the particulate matter is discharged into the second discharge port 12, and other large-sized garbage is respectively put into the third discharge port 13 and the first discharge port 3 according to the garbage volume; while the screening plate 805 is vibrating, the rubber anti-blocking ball 10 can do irregular bouncing work between the two groups of screening plates 805 to prevent the screening plate 805 from being blocked;

[0055] Through the above settings, this application can surely solve the above technical problems. At the same time, the following technical effects can be achieved:

[0056] Through the provided circulating filtration component 4, the present invention can preliminarily filter industrial waste. Moreover, the first filter plate 402 and the second filter plate 406 can be adjusted in angle under the action of the adjustment motor 401, facilitating subsequent circulating dial screening and the discharge of 2D waste on the first filter plate 402 and the second filter plate 406.

[0057] Through the provided flushing component 5, the present invention can spray water into the feed inlet 2 through the water outlet nozzle 503 to flush and reduce dust in the industrial waste put into the feed inlet 2. Finally, the sewage flows into the sewage tank 11 along the first filter plate 402 and the second filter plate 406.

[0058] Through the provided vibrating screen component 8, the present invention can drive the screening plate 805 to move up, down, left, and right under the action of the vibrating motor 801. The waste is screened according to the shape and size of the waste. Flat industrial waste such as thin films moves to the left, while three-dimensional waste moves to the right along the screening plate 805. Using this principle and cooperating with the inclined first filter plate 402 and the second filter plate 406 to achieve cyclic fluctuation operation, making the entire screening process more thorough. Moreover, while the screening plate 805 vibrates, the rubber anti-blocking balls 10 can perform irregular bouncing work between the two groups of screening plates 805 to prevent the screening plate 805 from being blocked.

[0059] Through the provided metal adsorption component 6, the present invention can drive the electromagnet 607 to move left and right under the action of the belt motor 606. After the electromagnet 607 is energized, it generates magnetism to adsorb metals in the industrial waste, which is convenient for use.

[0060] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device with a cyclic fluctuation structure, characterized in that, It includes a screening device main body (1), as well as a circulating filtration component (4) and a vibrating screen component (8) located inside the screening device main body (1); There are two sets of the vibrating screen components (8), and a fixing part (14) is arranged below one of the vibrating screen components (8). A elastic rope (9) is fixed below the fixing part (14), and a rubber anti-blocking ball (10) is connected below the elastic rope (9). A feeding port (2) is opened on the upper left side of the screening device main body (1), and a flushing component (5) is installed inside the feeding port (2). A metal adsorption component (6) is arranged above the vibrating screen component (8). A second discharge port (12) is arranged on the lower right side of the screening device main body (1), and a third discharge port (13) is arranged on the right side of the second discharge port (12). Hatches (7) are hinged to the front ends of both the third discharge port (13) and the second discharge port (12). A 2D discharge port (15) is arranged on the left side of the circulating filtration component (4). A first discharge port (3) is arranged above the right side of the screening device main body (1). A sewage bin (11) is arranged on the lower left side of the screening device main body (1); The circulating filtration component (4) includes a filtration bin (407). A first filter plate (402) is installed inside the filtration bin (407), and a second filter plate (406) is arranged below the first filter plate (402). A support (403) is arranged between the second filter plate (406) and the first filter plate (402), and a connecting rod (404) is installed inside the support (403). A driving shaft (405) is installed at the input end of the connecting rod (404), and an adjusting motor (401) is arranged at the end of the driving shaft (405); The metal adsorption component (6) includes a belt motor (606). The output end of the belt motor (606) is connected to a driving wheel (605), and a driven wheel (602) is arranged on one side of the driving wheel (605). Transmission belts (603) are arranged on the surfaces of both the driven wheel (602) and the driving wheel (605), and a transmission rod (604) is fixed on the surface of the transmission belt (603). An electromagnet (607) is fixed on the outside of the transmission rod (604), and a limiting sliding groove (601) is opened at the connection part of the transmission rod (604) and the screening device main body (1); The vibrating screen component (8) includes a vibrating motor (801). The output end of the vibrating motor (801) is connected to an eccentric wheel (802), and an eccentric shaft (803) is arranged at the output end of the eccentric wheel (802). A vibrating rod (804) is sleeved on the surface of the eccentric shaft (803), and a screening plate (805) is connected to one side of the vibrating rod (804); The heights of the second filter plate (406) and the first filter plate (402) are respectively adapted to the heights of the two sets of vibrating screen components (8). Both the second filter plate (406) and the first filter plate (402) form a rotating structure through the support (403), the connecting rod (404), the driving shaft (405) and the adjusting motor (401).

2. The screening device with a cyclic fluctuation structure according to claim 1, characterized in that, The flushing assembly (5) includes a connector (501), one end of the connector (501) is equipped with a water inlet pipe (502), and a water outlet nozzle (503) is provided at the end of the water inlet pipe (502).

3. The screening device with a cyclic fluctuation structure according to claim 2, characterized in that, The connector (501) is interconnected with the water outlet nozzle (503) through the water inlet pipe (502), and the water outlet nozzles (503) are evenly distributed at equal intervals along the inner wall of the feed inlet (2).

4. The screening device with a cyclic fluctuation structure according to claim 3, characterized in that, The transmission rod (604) moves left and right on the main body (1) of the screening device through the limit sliding groove (601), and the transmission rod (604) is parallel to the vibrating screen assembly (8). The driving wheel (605) realizes belt transmission with the driven wheel (602) through the transmission belt (603).

5. The screening device with a cyclic fluctuation structure according to claim 4, characterized in that, The size of the sieve holes on the top screening plate (805) is larger than the size of the sieve holes on the bottom screening plate (805).

6. The screening method of the screening device with a cyclic fluctuation structure according to claim 5, characterized in that, It includes the following steps: S1. Preliminary filtration: The adjusting motor (401) drives the connecting rod (404) to drive the bracket (403) to rotate through the drive shaft (405), so that the first filter plate (402) and the second filter plate (406) are tilted simultaneously, and the right end is at the same height as the screening plate (805). Industrial waste is put into the filter bin (407) through the feed inlet (2), and after being filtered by the first filter plate (402) and the second filter plate (406), it is put onto the screening plate (805) for screening. S2. Vibrating screening: The vibrating motor (801) drives the vibrating rod (804) to vibrate through the eccentric shaft (803) on the eccentric wheel (802), so that the screening plate (805) moves up and down and left and right, and vibrates and screens the industrial waste. The two groups of screening plates (805) can classify and screen the waste with different volume sizes. S3. Circular fluctuation: The initially screened 2D waste moves to the left and re-enters the first filter plate (402) and the second filter plate (406). After being filtered again, it is put onto the screening plate (805) again. After several cycles, the screening work is completed until the screening work is completed. S4. Metal screening: The belt motor (606) drives the transmission rod (604) to move left and right through the driving wheel (605), the driven wheel (602) and the transmission belt (603). After the electromagnet (607) is energized, it generates magnetism, adsorbs the metal in the industrial waste, and transports it to the first discharge port (3). After the electromagnet (607) is powered off, the separation can be completed. S5. Waste discharge: The adjusting motor (401) drives the connecting rod (404) to drive the bracket (403) to rotate through the drive shaft (405), so that the first filter plate (402) and the second filter plate (406) rotate to the left, and the left end is adapted to the 2D discharge port (15) to discharge the 2D waste, while the particulate matter is discharged into the second discharge port (12), and other large-sized waste is put into the third discharge port (13) and the first discharge port (3) respectively according to the waste volume.

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