Staged filtering device based on air dust pollution

Abstract

The invention discloses a staged filtering device based on air dust pollution, and relates to the technical field of air purification. The device specifically comprises a bin body, a separation bin and a collection bin, and further comprises a first filter screen piece and a second filter screen piece which are arranged in the separation bin, a scraper mechanism arranged in the separation bin, a material collecting pipe piece arranged below the first filter screen piece and a screen barrel connected to the output end of a first discharging pipe, and a stirring assembly and a material control assembly are arranged in the screen barrel. By arranging the bin body, when entering the screen cylinder through the separation bin, impurities can be output into the rolling screen cylinder through the screen cylinder, and in the process, the impurities are always in a state of moving towards the positions of the first guide pipe and the second guide pipe, so that large and small particles in the impurities are separated by the device structure in the moving process of the impurities, and the impurities can be separated more conveniently. And the phenomenon of impurity accumulation does not occur in the process until large and small particles of the impurities are completely separated, so that the impurity separation efficiency is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to a hierarchical filtering device based on air dust pollution. Background Art

[0002] In some workshop processing environments, such as seed selection and ore crushing, the air will contain a large amount of dust and particulate impurities. These impurities will pollute the working environment and cause damage to the health of the workers, so the air needs to be purified.

[0003] After searching, the Chinese patent publication number CN204380467U discloses an air filtration and separation system, which includes a box body, a bracket, a solid-gas separation module, a purified air duct, a connecting pipe structure, a sand removal fan and a sand removal duct. The box body includes an air intake filter panel, the bracket supports the box body, the solid-gas separation module is accommodated in the box body, the purified air duct is arranged in the box body and connected to the solid-gas separation module, one end of the connecting pipe structure is connected to the solid-gas separation module, and the other end is connected to the sand removal fan, and the other end of the sand removal fan is connected to the sand removal duct.

[0004] The above patent has the following deficiencies: it adopts a single-stage separation form, and the mesh size of the filter must match the size of the smallest dust particles in the air. In this way, particle impurities of different sizes are filtered out, which greatly increases the efficiency of removing impurities attached to the surface. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a hierarchical filtering device based on air dust pollution.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The filter bag of claim 1 further comprising a filter element which is arranged inside the filter bag, the filter element being located above the filter element and the filter bag being connected to the filter bag. Used to scrape impurities on the surface of filter element one, the scraping component two is used to scrape impurities on the surface of filter element two; a collecting pipe is arranged below the filter element one, the collecting pipe is used to collect impurities that fall through the filter element one, and the collecting pipe is also used to introduce the collected impurities into a collecting bin; a screen cylinder is connected to the output end of the discharge pipe one, and the screen cylinder is located inside the collecting bin, the output end of the screen cylinder is connected to the discharge pipe two, and a stirring component and a material control component are provided inside the screen cylinder, the stirring component is used to stir the impurities inside the screening cylinder, and the material control component is used to control the opening and closing of the output end of the screen cylinder.

[0008] Furthermore: it also includes a load-bearing rod arranged inside the warehouse body and located on its central axis, the filter component 1 and the filter component 2 are both umbrella-shaped, the inner side of the filter component 1 is connected to the load-bearing rod, and the outer side of the filter component 2 is connected to the inner wall of the separation warehouse, and the surface inclination directions of the filter component 1 and the filter component 2 are opposite.

[0009] Preferably: the scraping assembly includes a motor 1 arranged on the load-bearing rod, a rotating base 1 rotatably connected to the load-bearing rod, two gears 1 respectively connected to the output end of the motor 1 and the rotating base 1, and a plurality of scrapers 1 connected to the rotating base 1, the plurality of scrapers 1 are equidistantly arranged around the central axis of the rotating base 1, and the scrapers 1 are in contact with the surface of the filter element 1, and the two gears 1 are engaged with each other.

[0010] Based on the above scheme: the scraper assembly 2 includes a gear ring rotatably connected to the inner wall of the separation bin, a motor 2 arranged inside the separation bin, and a gear 2 connected to the output end of the motor 2. The gear 2 and the gear ring are engaged with each other, and a number of scrapers 2 are connected to the gear ring.

[0011] As a further solution of the present invention: the material collecting pipe is connected to the load-bearing rod, and the material collecting pipe is composed of a collecting bucket with a bucket-shaped appearance and a material guide pipe connected to the output end of the collecting bucket, the collecting bucket is connected below the filter element one, and the maximum inner diameter of the collecting bucket is larger than the maximum inner diameter of the filter element one, and the output end of the material guide pipe extends to the interior of the collection bin.

[0012] A better solution among the above solutions is: the stirring assembly includes a rotating base 2 rotatably connected to the load-bearing rod, a plurality of stirring rods connected to the rotating base 2, a motor 3 arranged on the load-bearing rod, and two gears 3 respectively connected to the output end of the motor 3 and the rotating base 2, and the two gears 3 are meshed with each other.

[0013] At the same time, the material control assembly includes a material level sensor arranged on the load-bearing rod, a closing plate movably connected to the two input ends of the discharge pipe, and a telescopic rod for driving the closing plate to move vertically. The sensor of the material level sensor faces the inside of the screen cylinder, and the material level sensor is used to sense the material level inside the screen cylinder.

[0014] As a preferred embodiment of the present invention: a scattering screen drum is rotatably connected inside the air intake bin, a plurality of staggered rods 1 are fixedly connected to the inner side wall of the scattering screen drum, a rotating shaft 1 is rotatably connected inside the scattering screen drum, a plurality of staggered rods 2 are fixedly connected to the rotating shaft 1, the moving trajectory of the staggered rod 1 and the moving trajectory of the staggered rod 2 are staggered and do not contact each other; a motor 4 is provided on the air intake bin, and the output end of the motor 4 is connected to the rotating shaft 1.

[0015] As a further optimization solution of the present invention: a rolling screen drum is rotatably connected to the collection bin, a spiral blade is connected to the inner side wall of the rolling screen drum, and the input end of the rolling screen drum is connected to the output end of the second discharge pipe.

[0016] The output end of the rolling screen is connected to a collection box, the output end of the collection box is connected to a second conduit, a drive motor is provided on the collection box, the output end of the drive motor is connected to a drive shaft, and the end of the drive shaft away from the drive motor is connected to the rolling screen.

[0017] The beneficial effects of the present invention are:

[0018] 1. In the present invention, impurities enter the screen cylinder through the separation bin and are then output from the screen cylinder to the rolling screen cylinder. During this process, the impurities are always in a state of moving toward the position of conduit one and conduit two. Therefore, compared with the device structure in the reference document, this device structure separates large and small particles in the impurities during the movement of the impurities, and under the action of filter element one, filter element two, screen cylinder and rolling screen cylinder, multi-stage separation is implemented for the impurities, so that they can be absorbed in grades according to the size of the particles, reduce the rate of impurities adhering to the surface, increase the maintenance cycle, until the large and small particles of the impurities are completely separated, and the phenomenon of impurity accumulation will not occur during this period, thereby ensuring the efficiency of impurity separation, and the impurity collection process can be completed without stopping the machine.

[0019] 2. The present invention, by arranging filter element 1 and filter element 2 in the bin body, can remove small particles of impurities during the movement of impurities, and under the action of scraper component 1 and scraper component 2, it avoids the accumulation of impurities on the surface of filter element 1 and filter element 2, and can drive the impurities rolling on filter element 1 and filter element 2 to move quickly, thereby accelerating the separation speed of large and small particles.

[0020] 3. The present invention provides a screen cylinder at the output end of the discharge pipe, thereby further separating small particle impurities mixed in large particle impurities. Under the action of the stirring component, the small particle impurities will pass through the sieve holes on the screen cylinder and fall into the collection bin. Under the action of the material control component, a batch of impurities will be output regularly, avoiding the accumulation of excessive impurities inside the screen cylinder and ensuring the separation efficiency of the screen cylinder.

[0021] 4. The present invention provides a rolling screen drum at the output end of the discharge pipe 1, thereby further separating the impurities outputted by the discharge pipe 1, so that the small particles of impurities that are not completely screened out in the screen drum and the small particles of impurities attached to the large particles of impurities can be further separated in the rolling screen drum, ensuring that the large particles of impurities finally outputted by the conduit 2 will no longer be mixed with small particles of impurities.

[0022] 5. The present invention provides a scattering screen drum in the air inlet bin. When impurities enter the interior of the scattering screen drum, the staggered rod 1 and the staggered rod 2 are staggered with each other when moving, thereby breaking up the agglomerated impurities inside the scattering screen drum, avoiding the problem that the agglomerated impurities are not conducive to moving in the separation bin, and thus the impurities entering the bin body can be in a loose state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a hierarchical filtering device based on air dust pollution proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of a hierarchical filtration device based on air dust pollution proposed by the present invention. Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of a hierarchical filtration device based on air dust pollution proposed by the present invention. Figure 2 ;

[0026] Figure 4 This is a schematic diagram of the internal structure of the air intake chamber of a hierarchical filtering device based on air dust pollution proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the scraping component 1 and the scraping component 2 of the hierarchical filtering device for air dust pollution proposed by the present invention;

[0028] Figure 6 This is a schematic diagram of the exploded structure of a filter element and a collecting pipe element of a graded filtration device for air dust pollution proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the stirring component and the material control component of the hierarchical filtering device based on air dust pollution proposed by the present invention;

[0030] Figure 8 This is a schematic diagram of the partial structure explosion of a hierarchical filtering device based on air dust pollution proposed by the present invention.

[0031] In the figure: 1, chamber; 2, air inlet chamber; 3, separation chamber; 4, collection chamber; 5, conduit 1; 6, filter element 1; 7, filter element 2; 8, material discharge channel; 9, scraper assembly 1; 901, motor 1; 902, rotating base 1; 903, scraper 1; 904, gear 1; 10, scraper assembly 2; 101, gear ring; 102, motor 2; 103, gear 2; 104, scraper 2; 11, collection pipe; 1101, collection bucket; 1102, material guide pipe; 12, Discharge pipe one; 13. Screen cylinder; 14. Discharge pipe two; 15. Load-bearing rod; 16. Rotating base two; 17. Stirring rod; 18. Motor three; 19. Gear three; 20. Material level sensor; 21. Closing plate; 22. Telescopic rod; 23. Breaking screen cylinder; 24. Staggered rod one; 25. Rotating shaft one; 26. Staggered rod two; 27. Motor four; 28. Rolling screen cylinder; 29. Spiral blade; 30. Collecting box; 31. Conduit two; 32. Drive shaft; 33. Drive motor. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] Example 1:

[0035] A hierarchical filtration device based on air dust pollution, such as Figures 1-8 As shown, it includes a silo body 1 with an irregular cylindrical shape, the silo body 1 includes an air inlet silo 2, a separation silo 3 connected to the output end below the air inlet silo 2, and a collecting silo 4 sleeved on the outside of the separation silo 3, the output end of the collecting silo 4 is connected to a conduit 5, and also includes a load-bearing rod 15 arranged inside the silo body 1 and located on its central axis, and also includes a filter member 1 6 and a filter member 2 7 arranged inside the separation silo 3, a scraper mechanism arranged inside the separation silo 3, a collecting pipe member 11 arranged below the filter member 1 6, and a screen cylinder 13 connected to the output end of the discharge pipe 12.

[0036] Specifically, the filter element 16 is located above the filter element 27, and a discharge channel 8 is formed between the outer side of the filter element 16 and the inner side wall of the separation bin 3. The inner side of the filter element 16 is connected to a discharge pipe 12; the scraper mechanism includes a scraper component 19 and a scraper component 210, the scraper component 19 is used to scrape the impurities on the surface of the filter element 16, and the scraper component 210 is used to scrape the impurities on the surface of the filter element 27; the collecting pipe 11 is used to collect impurities that fall through the sieve from the filter element 16, and the collecting pipe 11 is also used to introduce the collected impurities into the collecting bin 4; and the screen cylinder 13 is located inside the collecting bin 4, and the output end of the screen cylinder 13 is connected to the discharge pipe 2 14, and a stirring component and a material control component are provided inside the screen cylinder 13. The stirring component is used to stir the impurities inside the screening cylinder, and the material control component is used to control the opening and closing of the output end of the screen cylinder 13.

[0037] During use, by arranging the filter element 1 6 and the filter element 2 7 in the bin body 1, the impurities pass through the separation bin 3 and enter the screen drum 13, and are then output from the screen drum 13 to the rolling screen drum 28. During this process, the impurities are always in a state of moving toward the position of the conduit 1 5 and the conduit 2 31. Therefore, compared with the device structure in the reference document, this device structure separates the large and small particles in the impurities during the movement of the impurities, and under the action of the filter element 1 6, the filter element 2 7, the screen drum 13 and the rolling screen drum 28, the impurities are subjected to multi-stage separation until the large and small particles of the impurities are completely separated. During this period, the phenomenon of impurity accumulation will not occur, thereby ensuring the efficiency of impurity separation, and the impurity collection process can be completed without stopping the machine.

[0038] In order to solve the problem of impurities moving quickly on the filter element 6 and the filter element 2 7; Figure 5 As shown, the outer shapes of filter element 1 6 and filter element 2 7 are both umbrella-shaped, the inner side of filter element 1 6 is connected to the load-bearing rod 15, and the outer side of filter element 2 7 is connected to the inner wall of the separation bin 3, and the surface inclination directions of filter element 1 6 and filter element 2 7 are opposite. By arranging filter element 1 6 and filter element 2 7 in bin body 1, small particles of impurities can be removed during the movement of impurities, and under the action of scraper component 1 9 and scraper component 2 10, impurities are prevented from accumulating on the surface of filter element 1 6 and filter element 2 7, and the impurities rolling on filter element 1 6 and filter element 2 7 can be driven to move quickly, thereby accelerating the separation speed of large and small particles.

[0039] In order to solve the problem of impurities accumulating on the surface of the filter element 6 and the filter element 2 7; Figure 5 As shown, the scraping assembly 9 includes a motor 901 provided on the bearing rod 15, a rotating base 902 rotatably connected to the bearing rod 15, two gears 904 respectively connected to the output end of the motor 901 and the rotating base 902, and a plurality of scrapers 903 connected to the rotating base 902, the plurality of scrapers 903 are equidistantly arranged around the central axis of the rotating base 902, and the scrapers 903 are in contact with the surface of the filter element 6, the two gears 904 are meshed with each other, the motor 901 drives the gear 904 to rotate, and then drives another gear 904 meshed with the gear 904, and then drives the rotating base 902 to rotate through the gear 904, so that the plurality of scraper rods connected to the rotating base 902 make a circular motion, and the scraper rods will scrape the impurities on the surface of the filter element 6 while moving;

[0040] The scraper assembly 2 10 includes a ring gear 101 rotatably connected to the inner side wall of the separation chamber 3, a motor 2 102 arranged inside the separation chamber 3, and a gear 2 103 connected to the output end of the motor 2 102. The gear 2 103 and the ring gear 101 are meshed with each other. The ring gear 101 is connected to a plurality of scrapers 2 104. The motor 2 102 drives the gear 2 103 to rotate, thereby driving the meshed ring gear 101 to rotate, thereby driving the plurality of scrapers 2 104 connected to the ring gear 101 to move, and scraping impurities on the surface of the filter element 2 7;

[0041] Scraping assembly 1 9 and scraping assembly 2 10 can not only scrape away impurities on the surface of filter element 1 6 and filter element 2 7, but also drive the impurities rolling on filter element 1 6 and filter element 2 7 to move quickly, thereby accelerating the separation speed of large and small particles.

[0042] In order to solve the problem that the collecting pipe can smoothly introduce the impurities screened out by the filter element 6 into the collecting bin 4; Figure 6 As shown, the collecting pipe 11 is connected to the load-bearing rod 15, and the collecting pipe 11 is composed of a collecting bucket 1101 with a bucket-shaped appearance and a material guide pipe 1102 connected to the output end of the collecting bucket 1101. The collecting bucket 1101 is connected to the bottom of the filter element 6, and the maximum inner diameter of the collecting bucket 1101 is larger than the maximum inner diameter of the filter element 6. The output end of the material guide pipe 1102 extends to the interior of the collecting bin 4.

[0043] In order to solve the problem of excessive accumulation of impurities inside the screen cylinder 13, resulting in poor efficiency in separating large and small impurities; Figure 7 As shown, the stirring assembly includes a rotating base 2 16 rotatably connected to the load-bearing rod 15, a plurality of stirring rods 17 connected to the rotating base 2 16, a motor 3 18 arranged on the load-bearing rod 15, and two gears 3 19 respectively connected to the output end of the motor 3 18 and the rotating base 2 16, and the two gears 3 19 are engaged with each other. The motor 3 18 drives the gear 3 19 to rotate, and then drives another gear 3 19 engaged with the gear 3 19, and then drives the rotating base 2 16 to rotate through the gear 3 19, so that the plurality of stirring rods 17 connected to the rotating base 2 16 make a circular motion, and the stirring rods 17 stir the impurities in the filter cylinder while moving.

[0044] Among them, in order to ensure that mixed impurities of large and small particles have sufficient screening time, the material control component is used to control the time of impurity output from the screen cylinder 13. The material control component includes a material level sensor 20 arranged on the load-bearing rod 15, a closing plate 21 movably connected to the input end of the discharge pipe 14, and a telescopic rod 22 for driving the closing plate 21 to move vertically. The sensor of the material level sensor 20 faces the inside of the screen cylinder 13, and the material level sensor 20 is used to sense the material level inside the screen cylinder 13. By arranging the screen cylinder 13 on the output end of the discharge pipe 12, the small particle impurities mixed in the large particle impurities can be further separated. Under the action of the stirring component, the small particle impurities will pass through the sieve holes on the screen cylinder 13 and fall into the collection bin 4. Under the action of the material control component, a batch of impurities will be output regularly, avoiding excessive accumulation of impurities inside the screen cylinder 13 and ensuring the separation efficiency of the screen cylinder 13.

[0045] During the purification process of moist air, moist air will cause dust to clump, which will affect the filtering effect. Figure 4As shown, a scattering screen drum 23 is rotatably connected inside the air intake bin 2, and a plurality of staggered rods 24 are fixedly connected to the inner wall of the scattering screen drum 23. A rotating shaft 25 is rotatably connected inside the scattering screen drum 23, and a plurality of staggered rods 26 are fixedly connected to the rotating shaft 25. The moving trajectory of the staggered rod 1 24 and the moving trajectory of the staggered rod 2 26 are staggered and do not contact each other. A motor 4 27 is provided on the air intake bin 2, and the output end of the motor 4 27 is connected to the rotating shaft 1 25. The staggered rod 1 24 and the staggered rod 2 26 are staggered with each other when moving, so that the block impurities located inside the scattering screen drum 23 can be broken up, thereby avoiding the problem that the block impurities are not conducive to separation in the separation bin 3.

[0046] When the present embodiment is in use, mixed impurities fall onto the filter element 1 6, and most of the impurities will roll along the surface of the filter element 1 6. While the mixed impurities are rolling, small particles of impurities will fall along the filter holes on the surface of the filter element 1 6, and a small part of the impurities will accumulate on the surface of the filter element 1 6. At this time, a scraping component 1 9 is used to scrape the impurities on the surface of the filter element 1 6, and small particles of impurities will fall from the sieve holes of the filter element 1, while large particles of impurities will continue to roll into the channel and then fall onto the surface of the filter element 2 7. The mixed impurities will continue to roll on the surface of the filter element 2 7, and as the impurities roll, small particles of impurities will fall from the filter holes of the filter element 2 7. The impurities fall through the sieve holes and are separated by the filter element 1 6 and the filter element 2 7. At this time, the large impurities account for a relatively high proportion in the mixed impurities. When the mixed impurities fall into the screen cylinder 13, the stirring component is started to stir the mixed impurities. While stirring, the small impurities will fall into the collection bin 4 along with the filter holes on the filter cylinder. Affected by the different gravity of the large and small impurity particles, the large impurities will gradually settle at the bottom of the filter cylinder, while the small impurities will gradually move up to the surface of the mixed impurities as a whole. After the impurities in the filter cylinder reach a certain material level, the telescopic rod 22 is started to drive the closing plate 21 to move upward, so that the large particles of impurities at the bottom of the filter cylinder will be discharged along the discharge pipe 2 14.

[0047] Example 2:

[0048] A hierarchical filtration device based on air dust pollution, such as Figure 3 as well as Figure 8As shown, in order to solve the problem that the impurities output by the discharge pipe 12 also contain small particles of impurities; this embodiment makes the following improvements on the basis of embodiment 1: a rolling screen drum 28 is rotatably connected to the collection bin 4, and a spiral blade 29 is connected to the inner wall of the rolling screen drum 28. The input end of the rolling screen drum 28 is connected to the output end of the discharge pipe 2 14, and the output end of the rolling screen drum 28 is connected to the collection box 30. The output end of the collection box 30 is connected to the conduit 2 31. A drive motor 33 is provided on the collection box 30, and the output end of the drive motor 33 is connected to the drive shaft 32. The end of the drive shaft 32 away from the drive motor 33 is connected to the rolling screen drum 28.

[0049] When this embodiment is in use, a rolling screen drum 28 is provided at the output end of the discharge pipe 12, so that the impurities output by the discharge pipe 12 can be further separated, so that small particles of impurities that have not been completely screened out in the screen drum 13 and small particles of impurities attached to large particles of impurities can be further separated in the rolling screen drum 28. As the rolling screen drum 28 rotates, the small particles of impurities will fall into the rolling screen drum 28, and then fall into the collection bin 4 along the sieve holes of the rolling screen drum 28, while the large particles of impurities will be output from the output end of the rolling screen drum 28 to the conduit 2 31.

[0050] In addition, in this embodiment, the top of the air inlet bin 2 is also equipped with a fan for conveying airflow into the device.

[0051] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A hierarchical filtering device based on air dust pollution, comprising a bin body (1) with an irregular cylindrical shape, wherein the bin body (1) comprises an air inlet bin (2), a separation bin (3) connected to the output end below the air inlet bin (2), and a collection bin (4) sleeved on the outside of the separation bin (3), wherein the output end of the collection bin (4) is connected to a conduit (5), characterized in that: Also includes: A filter element 1 (6) and a filter element 2 (7) are arranged inside the separation bin (3), the filter element 1 (6) is located above the filter element 2 (7), a discharge channel (8) is formed between the outer side of the filter element 1 (6) and the inner side wall of the separation bin (3), and the inner side of the filter element 2 (7) is connected to a discharge pipe 1 (12); A scraper mechanism is provided inside the separation chamber (3), the scraper mechanism comprising a scraper assembly (9) and a scraper assembly (10), the scraper assembly (9) being used to scrape impurities on the surface of the filter element (6), and the scraper assembly (10) being used to scrape impurities on the surface of the filter element (7); a collecting pipe (11) disposed below the filter element (6), the collecting pipe (11) being used to collect impurities that have fallen through the filter element (6), and the collecting pipe (11) being further used to guide the collected impurities into a collecting bin (4); A screen cylinder (13) is connected to the output end of the discharge pipe (12), and the screen cylinder (13) is located inside the collection bin (4). The output end of the screen cylinder (13) is connected to the discharge pipe (14). A stirring component and a material control component are provided inside the screen cylinder (13). The stirring component is used to stir impurities inside the screening cylinder, and the material control component is used to control the opening and closing of the output end of the screen cylinder (13).

2. A hierarchical filtering device based on air dust pollution according to claim 1, characterized in that: The invention also includes a load-bearing rod (15) arranged inside the bin body (1) and located on the central axis thereof. The outer shapes of the filter element 1 (6) and the filter element 2 (7) are both umbrella-shaped. The inner side of the filter element 1 (6) is connected to the load-bearing rod (15), and the outer side of the filter element 2 (7) is connected to the inner wall of the separation bin (3). The surfaces of the filter element 1 (6) and the filter element 2 (7) are inclined in opposite directions.

3. A hierarchical filtering device based on air dust pollution according to claim 2, characterized in that: The scraping assembly (9) includes a motor (901) arranged on a load-bearing rod (15), a rotating base (902) rotatably connected to the load-bearing rod (15), two gears (904) respectively connected to the output end of the motor (901) and the rotating base (902), and a plurality of scrapers (903) connected to the rotating base (902), wherein the plurality of scrapers (903) are equidistantly arranged around the central axis of the rotating base (902), and the scrapers (903) are in contact with the surface of the filter element (6), and the two gears (904) are meshed with each other.

4. A hierarchical filtering device based on air dust pollution according to claim 1, characterized in that: The scraper assembly 2 (10) comprises a gear ring (101) rotatably connected to the inner wall of the separation chamber (3), a motor 2 (102) arranged inside the separation chamber (3), and a gear 2 (103) connected to the output end of the motor 2 (102), wherein the gear 2 (103) and the gear ring (101) are meshed with each other, and a plurality of scrapers 2 (104) are connected to the gear ring (101).

5. The hierarchical filtering device based on air dust pollution according to claim 2, characterized in that: The material collecting pipe (11) is connected to the load-bearing rod (15), and the material collecting pipe (11) is composed of a collecting bucket (1101) with a bucket-shaped appearance and a material guide pipe (1102) connected to the output end of the collecting bucket (1101). The collecting bucket (1101) is connected below the filter element (6), and the maximum inner diameter of the collecting bucket (1101) is greater than the maximum inner diameter of the filter element (6). The output end of the material guide pipe (1102) extends into the interior of the collecting bin (4).

6. The hierarchical filtering device based on air dust pollution according to claim 2, characterized in that: The stirring assembly comprises a rotating base 2 (16) rotatably connected to the bearing rod (15), a plurality of stirring rods (17) connected to the rotating base 2 (16), a motor 3 (18) arranged on the bearing rod (15), and two gears 3 (19) respectively connected to the output end of the motor 3 (18) and the rotating base 2 (16), and the two gears 3 (19) are meshed with each other.

7. The hierarchical filtering device based on air dust pollution according to claim 2, characterized in that: The material control assembly includes a material level sensor (20) arranged on a load-bearing rod (15), a closing plate (21) movably connected to the input end of the second discharge pipe (14), and a telescopic rod (22) for driving the closing plate (21) to move vertically. The sensor of the material level sensor (20) faces the interior of the screen cylinder (13), and the material level sensor (20) is used to sense the material level inside the screen cylinder (13).

8. The hierarchical filtering device based on air dust pollution according to claim 1, characterized in that: The air inlet bin (2) is internally connected to a scattering screen drum (23) for rotation, and a plurality of staggered rods (24) are fixedly connected to the inner side wall of the scattering screen drum (23). The scattering screen drum (23) is internally connected to a rotating shaft (25), and a plurality of staggered rods (26) are fixedly connected to the rotating shaft (25). The moving tracks of the staggered rods (24) and the moving tracks of the staggered rods (26) are staggered and do not contact each other. The air inlet bin (2) is provided with a motor four (27), and the output end of the motor four (27) is connected to the rotating shaft one (25).

9. The hierarchical filtering device based on air dust pollution according to claim 1, characterized in that: A rolling screen drum (28) is rotatably connected to the collecting bin (4), a spiral blade (29) is connected to the inner wall of the rolling screen drum (28), and the input end of the rolling screen drum (28) is connected to the output end of the second discharge pipe (14).

10. The hierarchical filtering device based on air dust pollution according to claim 9, characterized in that: The output end of the rolling screen drum (28) is connected to a collection box (30), the output end of the collection box (30) is connected to a second conduit (31), a driving motor (33) is provided on the collection box (30), the output end of the driving motor (33) is connected to a driving shaft (32), and the end of the driving shaft (32) away from the driving motor (33) is connected to the rolling screen drum (28).

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