阅读说明：本技术 一种避免扬灰的粉煤灰筛选装置及方法 (Fly ash screening device and method capable of avoiding ash lifting ) 是由 陈永林 于 2020-06-23 设计创作，主要内容包括：本发明公开了粉煤灰加工技术领域的一种避免扬灰的粉煤灰筛选装置及方法,所述箱体内腔底部设置有支撑台,且所述箱体内腔顶部设置有引风扇,所述引风扇下方设有加料组件,所述加料组件下方设有第一分选组件,所述第一分选组件下方设有第二分选组件,所述箱体侧壁设有防扬灰组件,所述防扬灰组件下方设有集料组件,本发明改变传统的震动式筛选结构,通过内空圆台型结构的分选滤环并配合沿其表面持续转动的扫动刷实现分选作业,降低了震动时物料扬起的灰尘量,并通过逐级分选作业,提高了分选的质量,且扬起的灰尘量较小,并通过循环转动的集尘布对扬起的灰尘进行收集,环保性高,使用效果好。(The invention discloses a fly ash screening device and a method for avoiding ash lifting in the technical field of fly ash processing, wherein a supporting table is arranged at the bottom of an inner cavity of a box body, an induced fan is arranged at the top of the inner cavity of the box body, a feeding component is arranged below the induced fan, a first sorting component is arranged below the feeding component, a second sorting component is arranged below the first sorting component, an ash lifting prevention component is arranged on the side wall of the box body, and an aggregate component is arranged below the ash lifting prevention component. High environmental protection and good use effect.)

1. The utility model provides an avoid fly ash sieving mechanism of ash that raises, includes box (100), its characterized in that: the bottom of the inner cavity of the box body (100) is provided with a supporting table (101), the top of the inner cavity of the box body (100) is provided with a guide fan (102), a feeding component (200) is arranged below the guide fan (102), a first sorting component (300) is arranged below the feeding component (200), a second sorting component (400) is arranged below the first sorting component (300), the side wall of the box body (100) is provided with an ash raising prevention component (500), and an aggregate component (600) is arranged below the ash raising prevention component (500).

2. The fly ash screening device for avoiding flying ash according to claim 1, wherein: the feeding assembly (200) comprises a material guide pipe (201) connected with an external feeding device, the tail end of the material guide pipe (201) is fixedly connected with a material guide cover (202), the material guide cover (202) is of a circular truncated cone hollow structure, and an annular material guide channel is formed in an inner cavity of the surface wall of the material guide cover (202).

3. The fly ash screening device for avoiding flying ash according to claim 1, wherein: the first sorting assembly (300) comprises a vertically arranged fixed column (301), a driving motor (302) is arranged at the top of the fixed column (301), an output end of the driving motor (302) is fixedly connected with a first connecting piece (303) movably sleeved on the fixed column (301), the first connecting piece (303) is of a 'people' shaped structure, the end part of the first connecting piece (303) is fixedly connected with a first scanning brush (304), a first sorting filter ring (305) is fixedly sleeved on the fixed column (301), the first sorting filter ring (305) is of a circular table hollow structure, and filter holes are uniformly formed in the surface of the circular table hollow structure.

4. The fly ash screening device for avoiding fly ash lifting according to claim 3, wherein: the edge of the bottom of the outer surface of the first sorting filter ring (305) is provided with an annular table (307), the top surface of the annular table (307) is provided with four bearing plates (308), the four bearing plates (308) are assembled to form a circular ring structure, the bearing plates (308) are movably connected with the annular table (307) through a rotating shaft (309), the bottom surface of the annular table (307) is provided with an ejection cylinder (306), and the output end of the ejection cylinder (306) is connected with the bearing plates (308).

5. The fly ash screening device for avoiding flying ash according to claim 1, wherein: the second sorting assembly (400) comprises a second sorting filter ring (402) fixed on the outer wall of the fixed column (301), the second sorting filter ring (402) is similar to the first sorting filter ring (305) in structural shape, the outer diameter of the top surface of the second sorting filter ring (402) is equal to the outer diameter of the bottom surface of the first sorting filter ring (305), a second connecting piece (401) coaxial with the first connecting piece (303) is arranged above the second sorting filter ring (402), the end part of the second connecting piece (401) is fixedly connected with a second sweeping brush (403), and a collecting bag (404) is hinged to the bottom of the outer surface of the second sorting filter ring (402).

6. The fly ash screening device for avoiding flying ash according to claim 1, wherein: prevent grey subassembly (500) of raising dust includes driving roller (501), the cover is equipped with collection dirt cloth (502) on driving roller (501), just box (100) inside and outside is located to driving roller (501) branch, prevent grey subassembly (500) of raising dust include with box (100) lateral wall fixed connection's basin (503), basin (503) both ends are equipped with supporting wheel (504), be equipped with take-up pulley (506) in basin (503), supporting wheel (504) and take-up pulley (506) are walked around in proper order to collection dirt cloth (502), be equipped with clearance subassembly (505) in basin (503), collection dirt cloth (502) pass clearance subassembly (505).

7. The fly ash screening device for avoiding fly ash lifting according to claim 6, wherein: the cleaning component (505) comprises a shell (5051), a cloth guide channel (5052) is formed in the inner cavity of the shell (5051), a liquid spraying cavity (5053) is formed in one end of the cloth guide channel (5052), the liquid spraying cavity (5053) is connected with a cleaning liquid cavity (5055) through a liquid guide pipe, a liquid spraying device (5054) is arranged on the liquid guide pipe, a brush roller (5056) with power is arranged on one side of the liquid spraying cavity (5053), a water distribution drain (5057) with a liquid outlet provided with a spray head is arranged on one side of the brush roller (5056), the water distribution drain (5057) is connected with a water pump (5058) through a water pipe, and a water through hole (5059) is formed in the surface of the shell (5051).

8. The fly ash screening apparatus for preventing fly ash as claimed in claim 1, 3 or 5, wherein: aggregate subassembly (600) are including locating first minute selection filter ring (305) and second minute selection filter ring (402) inner chamber below first material platform (601) and second material platform (602) that gathers materials respectively, first material platform (601) and second material platform (602) that gathers materials all are approximate conical structure, just gather materials recess (6011) have been seted up to first material platform (601) and second material platform (602) surface, material guide mouth (6012) have been seted up to material recess (6011) lateral wall that gathers materials, material guide mouth (6012) are connected with receipts material pipe (603) one end, it is connected with receipts material pipe (603) other end and receipts material case (604).

9. The use method of the fly ash screening device for preventing flying ash according to any one of claims 1 to 8, wherein: the method specifically comprises the following steps of,

s1: the fly ash raw material is guided into an inner cavity of the box body (100) through the feeding assembly (200) and falls on the first sorting assembly (300), the driving motor (302) drives the first connecting piece (303) to rotate, the first scanning brush (304) is driven to rotate along the surface of the first sorting filter ring (305), and primary screening operation of the fly ash is completed under a relatively static state;

s2: the fly ash which is not completely screened falls on the bearing plate (308), the ejection cylinder (306) is controlled to work discontinuously, the bearing plate (308) is driven to turn outwards, and the fly ash falling on the bearing plate falls downwards on the second sorting component (400);

s3: the second connecting piece (401) and the first connecting piece (303) are coaxially arranged, so that synchronous rotation is realized, the second sweeping brush (403) is driven to sweep on the surface of the second sorting filtering ring (402), secondary sorting of materials is realized, the sorted materials are collected through the collecting assembly (600), and residues fall into the collecting bag (404) to be cleaned;

s4: during the sorting operation, the dust raised by the falling fly ash floats above the inner cavity of the box body (100) under the action of the induced fan (102), and then passes through the continuously driven wet dust collecting cloth (502), so that the dust is attached to the surface of the wet dust collecting cloth (502), and the dust is reduced from floating everywhere;

s5: the dust collecting cloth (502) attached with dust is cleaned through the water tank (503) and the cleaning assembly (505), so that the dust collecting cloth can continuously keep the dust collecting effect, the dust is effectively prevented from being lifted and floating, and the using effect is good.

Technical Field

The invention relates to the technical field of fly ash processing, in particular to a fly ash screening device and a fly ash screening method capable of avoiding fly ash.

Background

The fly ash is fine ash particles discharged from the combustion process of the fuel. The particle size is generally 1 to 100 μm. Belongs to hazardous waste. Also known as fly ash or fly ash. The fine solid particles in the flue gas ash resulting from the combustion of the fuel. Such as fine ash collected from flue gases from coal fired power plants. The fly ash is formed by cooling pulverized coal after entering a hearth at 1300-1500 ℃ and being subjected to heat absorption by a hot surface under the suspension combustion condition. Most of the fly ash is spherical due to the action of surface tension, the surface is smooth, and micropores are small. Some of the particles are adhered by colliding with each other in a molten state, and thus, they become honeycomb-shaped composite particles having rough surfaces and many edges.

During processing of the fly ash, a large amount of dust can be raised due to the natural falling of the fly ash, and the dust can be scattered in the air to cause pollution, so that the environment-friendly performance is not high; in addition, a large amount of dust is easy to raise due to distance and shaking screening in the sorting process, and the using effect is poor.

Disclosure of Invention

The invention aims to provide a fly ash screening device and a fly ash screening method for avoiding ash flying, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an avoid fly ash sieving mechanism of ash that raises, includes the box, box inner chamber bottom is provided with a supporting bench, just box inner chamber top is provided with the induced fan, the induced fan below is equipped with reinforced subassembly, reinforced subassembly below is equipped with first sorting unit, first sorting unit below is equipped with the second and selects separately the subassembly, the box lateral wall is equipped with prevents the ash component that raises, prevent that ash component below is equipped with the subassembly that gathers materials.

Furthermore, the feeding assembly comprises a material guide pipe connected with an external feeding device, the tail end of the material guide pipe is fixedly connected with a material guide cover, the material guide cover is of a round table hollow structure, and an annular material guide channel is formed in an inner cavity of the surface wall of the material guide cover.

Furthermore, the first sorting component comprises a vertically arranged fixed column, a driving motor is arranged at the top of the fixed column, an output end of the driving motor is fixedly connected with a first connecting piece movably sleeved on the fixed column, the first connecting piece is of a 'people' shaped structure, the end part of the first connecting piece is fixedly connected with a first scanning brush, a first sorting filtering ring is fixedly sleeved on the fixed column, the first sorting filtering ring is of a round platform hollow structure, and filtering holes are uniformly formed in the surface of the first sorting filtering ring.

Furthermore, the edge of the bottom of the outer surface of the first sorting filter ring is provided with an annular table, the top surface of the annular table is provided with four receiving plates, the four receiving plates are connected to form a circular ring structure, the receiving plates are movably connected with the annular table through rotating shafts, the bottom surface of the annular table is provided with an ejection cylinder, and the output end of the ejection cylinder is connected with the receiving plates.

Furthermore, the second sorting component comprises a second sorting filter ring fixed on the outer wall of the fixed column, the shape of the second sorting filter ring is similar to that of the first sorting filter ring, the outer diameter of the top surface of the second sorting filter ring is equal to that of the bottom surface of the first sorting filter ring, a second connecting piece coaxial with the first connecting piece is arranged above the second sorting filter ring, the end part of the second connecting piece is fixedly connected with a second sweeping brush, and a collecting bag is hinged to the bottom of the outer surface of the second sorting filter ring.

Further, prevent that ash hoist subassembly includes the driving roller, the cover is equipped with collection dirt cloth on the driving roller, just the driving roller branch is located the box inside and outside, prevent that ash hoist subassembly includes the basin with box lateral wall fixed connection, the basin both ends are equipped with the supporting wheel, be equipped with the take-up pulley in the basin, supporting wheel and take-up pulley are walked around in proper order to collection dirt cloth, be equipped with the clearance subassembly in the basin, collection dirt cloth passes the clearance subassembly.

Further, the cleaning assembly comprises a shell, a cloth guide channel is formed in an inner cavity of the shell, a liquid spraying cavity is formed in one end of the cloth guide channel and connected with the cleaning liquid cavity through a liquid guide pipe, a liquid spraying device is arranged on the liquid guide pipe, a brush roller with power is arranged on one side of the liquid spraying cavity, a water distribution row with a nozzle mounted at a liquid outlet is arranged on one side of the brush roller, the water distribution row is connected with a water pump through a water pipe, and a water through hole is formed in the surface of the shell.

Further, the subassembly that gathers materials is including locating first branch selection filter ring and second branch selection filter ring inner chamber below first material collecting platform and second material collecting platform respectively, first material collecting platform and second material collecting platform all are approximate circular cone structure, just first material collecting platform and second material collecting platform surface have seted up the recess that gathers materials, the baffle opening has been seted up to the recess lateral wall that gathers materials, the baffle opening is connected with receipts material pipe one end, receive the material pipe other end and receive the workbin and be connected.

A use method of a fly ash screening device for avoiding ash flying specifically comprises the following steps,

s1: the fly ash raw material is led into the inner cavity of the box body through the feeding assembly and falls on the first sorting assembly, the driving motor drives the first connecting piece to rotate, the first scanning brush is driven to rotate along the surface of the first sorting filtering ring, and primary screening operation of the fly ash is completed under a relatively static state;

s2: the fly ash which is not completely screened falls on the bearing plate, the ejection cylinder is controlled to work discontinuously, the bearing plate is driven to turn outwards, and the fly ash falling on the bearing plate falls on the second sorting component downwards;

s3: the second connecting piece and the first connecting piece are coaxially arranged, so that synchronous rotation is realized, the second sweeping brush is driven to sweep on the surface of the second sorting filter ring, secondary sorting of materials is realized, the sorted materials are collected through the collecting assembly, and residues fall into the collecting bag to be cleaned;

s4: during the sorting operation, the dust raised by the falling fly ash floats above the inner cavity of the box body under the action of the induced fan, and then passes through the continuously driven wet dust collecting cloth, so that the dust is attached to the surface of the wet dust collecting cloth, and the dust is reduced from floating everywhere;

s5: the dust collecting cloth attached with dust is cleaned through the water tank and the cleaning assembly, so that the dust collecting cloth can continuously keep a dust collecting effect, the dust is effectively prevented from floating, and the using effect is good.

Compared with the prior art, the invention has the beneficial effects that: the traditional vibration type screening structure is changed, the sorting operation is realized by the sorting filtering ring with the hollow circular truncated cone structure and the sweeping brush which continuously rotates along the surface of the sorting filtering ring, the dust amount raised by materials during vibration is reduced, the sorting quality is improved by the step-by-step sorting operation, and the raised dust amount is smaller; the raised dust floats upwards in the inner cavity of the box body in a centralized way and passes through the dust collecting cloth which rotates circularly, the dust collecting cloth is in a wetted state, and the floating dust can be attached to the surface of the dust collecting cloth, so that the dust is prevented from floating everywhere, and the pollution to the surrounding environment is reduced; last circulation pivoted collection dirt cloth carries out efficient clearance operation to it through locating the clearance subassembly in the basin, makes it rotate again and be in clean state when the box inner chamber, guarantees to last album dirt high efficiency, and can carry out effectual collection to the dust, and the feature of environmental protection is high, excellent in use effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a first sorting module according to the present invention;

FIG. 3 is a schematic structural view of a second sorting module according to the present invention;

FIG. 4 is a schematic view of a material receiving platform according to the present invention;

FIG. 5 is a schematic view of the mounting structure of the bearing plate of the present invention;

FIG. 6 is a schematic structural view of an ash hoist prevention assembly according to the present invention;

FIG. 7 is a schematic view of a cleaning assembly according to the present invention.

In the figure: 100. a box body; 101. a support table; 102. a fan guide; 200. a feeding assembly; 201. a material guide pipe; 202. a material guiding cover; 300. a first sorting assembly; 301. fixing a column; 302. a drive motor; 303. a first connecting member; 304. a first sweeping brush; 305. a first sorting filter ring; 306. ejecting out the cylinder; 307. an annular table; 308. a bearing plate; 309. a rotating shaft; 400. a second sorting assembly; 401. a second connecting member; 402. a second sorting filter ring; 403. a second sweeping brush; 404. a collection bag; 500. an ash lifting prevention component; 501. a driving roller; 502. a dust collecting cloth; 503. a water tank; 504. a support wheel; 505. cleaning the assembly; 5051. a housing; 5052. a cloth guide channel; 5053. a liquid spray chamber; 5054. a liquid sprayer; 5055. a cleaning fluid chamber; 5056. a brush roller; 5057. water is distributed; 5058. a water pump; 5059. a water through hole; 506. a tension wheel; 600. an aggregate assembly; 601. a first material collecting platform; 6011. a collecting groove; 6012. a material guide port; 602. a second material collecting platform; 603. a material receiving pipe; 604. and a material receiving box.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a fly ash screening device for preventing ash from flying, which comprises a box 100, a supporting platform 101 disposed at the bottom of the inner cavity of the box 100, and a fan 102 disposed at the top of the inner cavity of the box 100, the raised dust floats upwards along the inner cavity of the box body through the induced fan 102, the feeding component 200 is arranged below the induced fan 102, the first sorting component 300 is arranged below the feeding component 200, the second sorting component 400 is arranged below the first sorting component 300, the separation operation of the fly ash is realized through the first separation component 300 and the second separation component 400, the vibration separation of transmission is changed, the amount of raised dust is reduced, the surrounding environment is protected, the side wall of the box body 100 is provided with the dust raising prevention component 500, carry out the efficient through preventing that raise grey subassembly 500 clears away the dust of raising, avoid raising the dust scattered all around, lead to the problem of pollution, prevent that raise grey subassembly 500 below is equipped with the subassembly 600 that gathers materials.

Referring to fig. 1, the feeding assembly 200 includes a material guiding pipe 201 connected to an external feeding device, a material guiding cover 202 is fixedly connected to a terminal of the material guiding pipe 201, the material is conveyed into the material guiding cover 202 through the material guiding pipe 201, and uniformly falls on an outer surface of the first sorting filter ring 305 through an annular material guiding channel in the material guiding cover 202, the material slides along the outer surface of the first sorting filter ring 305 from top to bottom, the material guiding cover 202 is a circular truncated cone hollow structure, and an annular material guiding channel is opened in an inner cavity of a surface wall of the material guiding cover 202.

Referring to fig. 2, the first sorting assembly 300 includes a vertically disposed fixed column 301, a driving motor 302 is disposed on the top of the fixed column 301, an output end of the driving motor 302 is fixedly connected to a first connecting member 303 movably sleeved on the fixed column 301, the first connecting member 303 is in a "human" shape, an end of the first connecting member 303 is fixedly connected to a first scanning brush 304, the first scanning brush 304 is attached to an outer surface of a first sorting filter ring 305, the first scanning brush 304 is provided with two and symmetrically distributed, the driving motor 302 drives the first scanning brush 304 to scan along the outer surface of the first sorting filter ring 305, so that the materials are sorted through filter holes uniformly provided on the surface, the rotating speed of the driving motor 302 is controlled and adjusted to make the first scanning brush 304 rotate slowly, the rotating speed adjusting technology of the motor is the prior art, a corresponding adjusting device is configured and not embodied in the present application, a fixed sleeve of the first sorting filter ring 305 is disposed on the fixed column 301, the first sorting filter ring 305 is a hollow structure in a circular truncated cone, and filter holes are uniformly formed in the surface of the first sorting filter ring.

Referring to fig. 5, an annular table 307 is disposed at the bottom edge of the outer surface of the first sorting filter ring 305, the inner wall of the annular table 307 is fixedly connected to the outer surface of the first sorting filter ring 305, four receiving plates 308 are disposed on the top surface of the annular table 307, the sorted materials fall onto the receiving plates 308, the four receiving plates 308 are assembled into a circular ring structure, the receiving plates 308 are movably connected to the annular table 307 through a rotating shaft 309, and an ejecting cylinder 306 is disposed on the bottom surface of the annular table 307, so that when the materials on the receiving plates 308 are collected to a certain degree, the ejecting cylinder 306 is controlled to work, the receiving plates 308 are pushed upward to drive the receiving plates 308 to turn outward around the rotating shaft 309, so that the materials on the receiving plates 308 fall onto the second sorting filter ring 402, the sorting operation is performed again, and the output ends of the ejecting cylinder 306 are connected to the.

Referring to fig. 3, the second sorting assembly 400 includes a second sorting filter ring 402 fixed on the outer wall of the fixed column 301, the second sorting filter ring 402 is similar to the first sorting filter ring 305 in structure shape, except that the diameter of the filter holes formed on the second sorting filter ring 402 is different, and the outer diameter of the top surface of the second sorting filter ring 402 is equal to the outer diameter of the bottom surface of the first sorting filter ring 305, the arrangement is such that the unsorted and completely sorted material is just dropped on the second sorting filter ring 402 through the outward turned bearing plate 308, both the first sorting filter ring 305 and the second sorting filter ring 402 are hollow circular truncated cone structures made of stainless steel material, a second connecting member 401 coaxial with the first connecting member 303 is arranged above the second sorting filter ring 402, i.e. the first connecting member 303 and the second connecting member 401 rotate synchronously through the driving motor 302, the end of the second connecting member 401 is fixedly connected with a second sweeping brush 403, the second sweeping brush 403 rotates in the same direction with the first sweeping brush 304, and slowly rotate along the outer surface of the second sorting filter ring 402 to complete the sorting operation of the materials staying on the surface, a collecting bag 404 is hinged at the bottom of the outer surface of the second sorting filter ring 402, and the collecting bag 404 can be periodically detached to clean the impurities filtered out.

Referring to fig. 5, the dust-raising preventing assembly 500 includes a driving roller 501, a dust collecting cloth 502 is sleeved on the driving roller 501, the driving roller 501 is respectively disposed at the inner side and the outer side of the box 100, the dust collecting cloth 502 is driven by the driving roller 501 to continuously rotate, a supporting structure is added to the driving roller 501 when the driving roller 501 is installed, in this application, the driving roller 501 located at the outer side of the box 100 does not show a supporting structure, the dust-raising preventing assembly 500 includes a water tank 503 fixedly connected to the outer side wall of the box 100, the surface of the dust collecting cloth 502 is in a wetted state during the driving process, so that the dust floating upward is attached to the dust collecting cloth 502, supporting wheels 504 are disposed at two ends of the water tank 503, a tension wheel 506 is disposed in the water tank 503, the dust collecting cloth 502 sequentially bypasses the supporting wheels 504 and the tension wheel 506, the dust collecting cloth 502 is always in a tensioned state through the supporting wheels, the dust collection cloth 502 passes through the cleaning assembly 505.

Referring to fig. 6, the cleaning assembly 505 includes a housing 5051, a cloth guide channel 5052 is formed in an inner cavity of the housing 5051, the dust collecting cloth 502 is driven into the cloth guide channel 5052, a liquid spray cavity 5053 is formed at one end of the cloth guide channel 5052, the liquid spray cavity 5053 is connected with a cleaning liquid cavity 5055 through a liquid guide pipe, a liquid spray 5054 is formed on the liquid guide pipe, cleaning liquid in the cleaning liquid cavity 5055 is conveyed into the liquid spray cavity 5053 through the liquid spray 5054 and is sprayed onto the surface of the dust collecting cloth 502, along with penetrating water, the cleaning liquid is dissolved, dust and dirt on the surface of the dust collecting cloth 502 can be dissolved, a powered brush roller 5056 is arranged on one side of the liquid spray cavity 5053, the dust collecting cloth 502 is brushed through the brush roller 5056, dust and foreign substances attached to the dust collecting cloth fall rapidly, a water distribution 5057 provided with a nozzle is arranged on one side of the brush roller 5056, the water distribution 5057 is connected with a water pump 5058 through a water pump 5058, and finally cleaning water is conveyed, wash it to make the collection dirt cloth 502 surface of derivation become clean face again, and then along with the transmission gets into the box 100 inner chamber once more and prevents the raise dust effect, guarantee to last album dirt high efficiency, and can carry out effectual collection to the dust, the feature of environmental protection is high, the limbers 5059 has been seted up on casing 5051 surface.

Referring to fig. 1 and 7, the collecting assembly 600 includes a first collecting platform 601 and a second collecting platform 602 respectively disposed below the inner cavities of the first separating and filtering ring 305 and the second separating and filtering ring 402, and the first collecting platform 601 and the second collecting platform 602 collect the materials separated by the separating and filtering, the first collecting platform 601 and the second collecting platform 602 are both in an approximately conical structure, and the outer surfaces of the first collecting platform 601 and the second collecting platform 602 are provided with collecting grooves 6011, the materials falling through the filtering holes slide down along the collecting grooves 6011 to the bottom, the bottom of the collecting grooves 6011 is set at a certain depth, the side wall of the collecting grooves 6011 is provided with guide openings 6012, the guide openings 6012 can be provided with a plurality of ones, the guide openings 6012 are connected with one end of a collecting pipe 603, the other end of the collecting pipe 603 is connected with the collecting box 604, the collecting equipment is disposed in the collecting box 604, and particularly, the collecting operation is performed by the collecting equipment of the prior art, the principle is to collect the materials in the aggregate groove 6011 by the action of gravity.

A use method of a fly ash screening device for avoiding ash flying specifically comprises the following steps,

s1: the fly ash raw material is guided into the inner cavity of the box body 100 through the feeding assembly 200 and falls on the first sorting assembly 300, the driving motor 302 drives the first connecting piece 303 to rotate, the first scanning brush 304 is driven to rotate along the surface of the first sorting filter ring 305, and primary screening operation of the fly ash is completed in a relatively static state;

s2: the fly ash which is not completely screened falls on the bearing plate 308, the ejection cylinder 306 is controlled to work discontinuously, the bearing plate 308 is driven to turn outwards, and the fly ash falling on the bearing plate is enabled to fall on the second sorting component 400 downwards;

s3: the second connecting piece 401 and the first connecting piece 303 are coaxially arranged, so that synchronous rotation is realized, the second sweeping brush 403 is driven to sweep on the surface of the second sorting filter ring 402, secondary sorting of materials is realized, the sorted materials are collected through the collecting component 600, and residues fall into the collecting bag 404 to be cleaned;

s4: during the sorting operation, the dust raised by the falling fly ash floats to the upper part of the inner cavity of the box body 100 under the action of the induced fan 102, and then passes through the continuously driven wet dust collecting cloth 502, so that the dust is attached to the surface of the wet dust collecting cloth 502, and the dust is prevented from floating everywhere;

s5: the dust collection cloth 502 with dust is cleaned by the water tank 503 and the cleaning assembly 505, the surface of the dust collection cloth 502 is in a wet state during transmission, so that the dust floating upwards is attached to the dust collection cloth 502, the cleaning liquid in the cleaning liquid cavity 5055 is conveyed to the liquid spraying cavity 5053 through the liquid spraying device 5054 and is sprayed on the surface of the dust collection cloth 502, the cleaning liquid is dissolved along with the penetrated water, the dust stain on the surface of the dust collection cloth 502 can be dissolved, the dust collection cloth 502 is brushed by the brush roller 5056, the dust and impurities attached to the dust collection cloth fall rapidly, finally the cleaning water is conveyed to the dust collection cloth 502 through the water distribution 5057 by the water pump 5058 and is washed, the surface of the guided dust collection cloth 502 is changed into a cleaning surface again, and enters the inner cavity of the box 100 again along with the transmission for dust prevention effect, and the dust is effectively prevented from floating, the use effect is good.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.