Integrated screening device

Abstract

The utility model discloses an integrated screening device relates to screening device technical field, and the integrated screening device includes screening mechanism, feeding structure and crushing structure, wherein, screening mechanism includes soft rigidity screen cloth and first vibrator, and soft rigidity screen cloth is used for screening small granular material, and first vibrator sets up at the bottom of soft rigidity screen cloth, is used for driving soft rigidity screen cloth vibration, and feeding structure includes buffer bin, belt conveyor and unloading pipeline, and buffer bin is used for collecting the large granular material after screening of soft rigidity screen cloth, and the feed inlet of belt conveyor is set up in the discharge port of buffer bin, and the feed inlet of unloading pipeline is set up in the discharge port of belt conveyor, to transport the large granular material after screening of soft rigidity screen cloth, and crushing structure includes crushing bin, driving part and a plurality of air hammers, and crushing bin sets up in the discharge port of unloading pipeline, and driving part sets up in the inner chamber of crushing bin, and a plurality of air hammers drive and connect in driving part, are used for breaking up large granular material.

Description

Technical Field

[0001] This utility model relates to the field of integrated screening device technology, and in particular to an integrated screening device. Background Technology

[0002] Due to limitations in petroleum production processes, the separation of coke produced by delayed coking mainly relies on high-pressure water cutting. As a result, the particle size of the coke lumps varies greatly, ranging from millimeter-sized particles to blocks of tens of centimeters. As raw materials for artificial graphite anodes, these lumps first need to undergo grinding. Despite years of equipment upgrades in the industry, larger particles still cannot be directly fed into the machine and require crushing. Small particles and large lumps of coke are crushed simultaneously.

[0003] During the crushing process, large and small particles are crushed together, and small particles are crushed into even smaller particles. This results in uneven particle size after crushing, which affects key indicators such as toner particle size. Utility Model Content

[0004] The main purpose of this invention is to propose an integrated screening device that aims to make the crushed particles uniform in size and ensure key indicators such as toner particle size.

[0005] To achieve the above objectives, the integrated screening device proposed in this utility model includes:

[0006] The screening mechanism includes a flexible rigid screen and a first vibrator. The flexible rigid screen is used to screen small particulate materials, and the first vibrator is disposed at the bottom of the flexible rigid screen to drive the flexible rigid screen to vibrate.

[0007] The feeding structure includes a buffer bin, a belt conveyor, and a discharge pipe. The buffer bin collects large particles after screening by the flexible-rigid screen. The inlet of the belt conveyor is located at the outlet of the buffer bin, and the inlet of the discharge pipe is located at the outlet of the belt conveyor, to transport the large particles after screening by the flexible-rigid screen.

[0008] The crushing structure includes a crushing chamber, a driving component, and multiple air hammers. The crushing chamber is located at the outlet of the feeding pipe, the driving component is located inside the crushing chamber, and the multiple air hammers are driven and connected to the driving component for crushing large particles of material.

[0009] Preferably, the flexible-rigid screen is inclined downward toward the buffer chamber.

[0010] Preferably, the flexible-rigid screen is provided with a guide plate between the buffer chambers, and a second vibrator is provided at the bottom of the guide plate.

[0011] Preferably, the bottom of the flexible screen is provided with a hopper, a third vibrator is provided on the hopper, and a first ton bag is provided at the outlet of the hopper.

[0012] Preferably, an electromagnetic separator is provided on the upper side of the belt conveyor.

[0013] Preferably, a discharge pipe is provided at the bottom of the crushing chamber, and a second ton bag is provided at the discharge port of the discharge pipe.

[0014] Preferably, the discharge pipe is provided with a closed structure, the closed structure comprising:

[0015] A drive device is installed on the discharge pipe;

[0016] The insert plate, driven by the drive device, moves toward or away from the inner cavity of the discharge pipe to close the discharge pipe.

[0017] Preferably, the top of the buffer hopper, the outlet of the belt conveyor, and the inlet of the second ton bag are all equipped with dust collection hoods, each dust collection hood is connected to a dust removal pipe, and the outlet of each dust removal pipe is equipped with a pulse bag dust collector, the outlet of the pulse bag dust collector is connected to a high-pressure fan.

[0018] Preferably, the pulse bag filter includes:

[0019] The housing is located at the air inlet of each of the dust removal ducts and is equipped with a membrane filter bag inside for collecting dust.

[0020] A pulse backflushing device is installed on the top of the housing for blowing away dust;

[0021] A dust hopper, located at the bottom of the housing, is used to collect the settled dust.

[0022] Preferably, a conveying pipe is provided at the bottom of the ash hopper, and the end of the conveying pipe away from the ash hopper is connected to the first ton bag.

[0023] In the technical solution provided by this utility model, the screening mechanism includes a flexible rigid screen and a first vibrator. The flexible rigid screen is used to screen small particles. The first vibrator is located at the bottom of the flexible rigid screen and is used to drive the flexible rigid screen to vibrate. The feeding structure includes a buffer bin, a belt conveyor, and a discharge pipe. The buffer bin is used to collect large particles after screening by the flexible rigid screen. The inlet of the belt conveyor is located at the outlet of the buffer bin, and the inlet of the discharge pipe is located at the outlet of the belt conveyor to transport the large particles after screening by the flexible rigid screen. The crushing structure includes a crushing bin, a driving component, and multiple air hammers. The crushing bin is located at the outlet of the discharge pipe, and the driving component is located in the inner cavity of the crushing bin. The multiple air hammers are driven and connected to the driving component to crush large particles. Material grading is achieved through a pre-screening stage, and only large particles are subjected to directional crushing, reducing ineffective crushing operations. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A perspective view of an embodiment of the integrated screening device provided by this utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the screening and crushing mechanism.

[0027] Explanation of icon numbers:

[0028] 100. Integrated screening device; 1. Screening mechanism; 101. First vibrator; 102. Flexible and rigid screen; 2. Feeding structure; 201. Buffer bin; 202. Belt conveyor; 203. Discharge pipe; 3. Hopper; 4. Crushing structure; 401. Drive component; 402. Air hammer; 403. Crushing bin; 5. First ton bag; 6. Second ton bag; 7. High-pressure blower; 8. Pulse bag dust collector; 9. Dust collection pipe; 10. Dust hood; 11. Second vibrator; 12. Guide plate; 13. Electromagnetic iron separator; 14. Enclosed structure; 1401. Drive device; 1402. Insert plate.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] This utility model provides an integrated screening device 100. Figures 1 to 2 An embodiment of the integrated screening device 100 provided by this utility model.

[0034] The coke lumps produced during petroleum coke production exhibit significant differences in particle size. When small particles are mixed with larger lumps (tens of centimeters in diameter) for crushing, the small particles are easily over-crushed, resulting in uneven particle size distribution after crushing and affecting key indicators such as toner particle size. Traditional crushing equipment cannot effectively separate materials of different particle sizes, and the mixing process during crushing leads to resource waste and low process efficiency.

[0035] Please refer to the following: Figures 1 to 2The integrated screening device 100 includes a screening mechanism 1, a feeding structure 2, and a crushing structure 4. The screening mechanism 1 includes a flexible-rigid screen 102 and a first vibrator 101. The flexible-rigid screen 102 is used to screen small particles, and the first vibrator 101 is located at the bottom of the flexible-rigid screen 102 to drive it to vibrate. The feeding structure 2 includes a buffer chamber 201, a belt conveyor 202, and a discharge pipe 203. The buffer chamber 201 is used to collect large particles after screening by the flexible-rigid screen 102. The feed inlet of the belt conveyor 202 is located at the discharge outlet of the buffer chamber 201, and the feed inlet of the discharge pipe 203 is located at the discharge outlet of the belt conveyor 202 to transport large particles of material screened by the flexible-rigid screen 102. The crushing structure 4 includes a crushing chamber 403, a driving component 401, and multiple air hammers 402. The crushing chamber 403 is located at the discharge outlet of the discharge pipe 203, the driving component 401 is located in the inner cavity of the crushing chamber 403, and the multiple air hammers 402 are driven and connected to the driving component 401 for crushing large particles of material.

[0036] The flexible-rigid screen 102 refers to a screening component that combines flexibility and structural strength. It can be achieved by combining a woven wire mesh with an elastic support frame. The screen aperture size controls the separation accuracy of small particles while withstanding the impact of large particles. The first vibrator 101 is a mechanical device that generates high-frequency vibration. It can be implemented using an eccentric wheel mechanism or an electromagnetic vibrator. Vibration enhances screening efficiency and prevents material blockage. The buffer bin 201 is a container for temporary material storage. It can be implemented using a conical bucket structure, guiding the material to fall in a concentrated manner through gravity. The belt conveyor 202 is a mechanical system for continuously transporting materials. It can be implemented using a rubber belt and roller drive structure, controlling the material flow rate by adjusting the conveying speed. The crushing bin 403 is a closed cavity that accommodates crushing operations. It can be implemented using a welded structure of high-manganese steel plates, decomposing large particles through the impact force of the air hammer 402. The drive unit 401 is a mechanical unit that provides power. It can be implemented using a hydraulic motor or an electric motor, driving the air hammer 402 to produce reciprocating motion through a rotating shaft. The air hammer 402 refers to the impact component used for crushing, which can be made of alloy steel forged hammerheads, and crushes materials through high-frequency impact.

[0037] The material first enters the flexible-rigid screen 102 for screening. Small particles fall directly into the bottom hopper 3, while large particles slide along the inclined screen surface into the buffer hopper 201. The material in the buffer hopper 201 is transferred to the discharge pipe 203 via the belt conveyor 202, and then enters the crushing hopper 403. The drive unit 401 drives multiple air hammers 402 to perform multi-directional impact crushing of the large particles. The crushed material is discharged through the discharge pipe. The screening and crushing processes are connected by a conveyor structure to form a continuous processing flow, preventing small particles from entering the crushing process.

[0038] Therefore, in the technical solution provided by this utility model, the screening mechanism 1 includes a flexible-rigid screen 102 and a first vibrator 101. The flexible-rigid screen 102 is used to screen small particles, and the first vibrator 101 is located at the bottom of the flexible-rigid screen 102 to drive the flexible-rigid screen 102 to vibrate. The feeding structure 2 includes a buffer chamber 201, a belt conveyor 202, and a discharge pipe 203. The buffer chamber 201 is used to collect large particles after screening by the flexible-rigid screen 102, and the inlet of the belt conveyor 202 is located at the outlet of the buffer chamber 201. The feed inlet of the feed pipe 203 is located at the discharge outlet of the belt conveyor 202 to transport large particles of material screened by the flexible-rigid screen 102. The crushing structure 4 includes a crushing chamber 403, a drive component 401, and multiple air hammers 402. The crushing chamber 403 is located at the discharge outlet of the feed pipe 203. The drive component 401 is located in the inner cavity of the crushing chamber 403. Multiple air hammers 402 are driven and connected to the drive component 401 to crush large particles of material. The material is graded through the pre-screening stage, and only large particles are subjected to directional crushing to reduce ineffective crushing operations.

[0039] To address the problem of low screening efficiency caused by large particles remaining on the screen surface during screening, a combination of gravity guidance and vibration is used to achieve rapid material separation, ensuring that large particles enter the subsequent crushing process in a timely manner and preventing the accumulation of unscreened material from affecting the stability of the screen. Specifically, in the embodiments of this utility model, the flexible rigid screen 102 is inclined downward toward the buffer chamber 201.

[0040] After the flexible rigid screen 102 tilts downwards, large particles that were not screened during the screening process slide along the screen surface towards the buffer chamber 201 under the action of gravity, preventing material from accumulating on the screen and causing blockage. The tilt angle can be adjusted according to the material flowability. For example, when processing highly viscous coke, the tilt angle can be appropriately increased to enhance the material sliding speed. The first vibrator 101 installed at the bottom of the screen assists in material dispersion through periodic vibration. The synergistic effect of the tilted screen and vibration can improve screening efficiency and ensure that large particles quickly enter the buffer chamber 201 for subsequent crushing.

[0041] Furthermore, a guide plate 12 is provided between the flexible and rigid screen 102 and the buffer chamber 201, and a second vibrator 11 is provided at the bottom of the guide plate 12.

[0042] The guide plate 12 is an inclined guide structure set between the flexible rigid screen 102 and the buffer chamber 201. It can be made of metal sheet or polymer composite material, and its surface can be covered with a wear-resistant layer to reduce material impact and wear. It is used to guide large particles screened by the flexible rigid screen 102 into the buffer chamber 201. The large particles are received by the guide plate 12 and slide naturally towards the buffer chamber 201 at an inclined angle. The vibration generated by the second vibrator 11 is transmitted to the surface of the guide plate 12, keeping the material dispersed during sliding and preventing conveying interruptions due to material adhesion or jamming. When the material reaches the inlet of the buffer chamber 201, the vibration further eliminates the squeezing and accumulation between materials, ensuring that the material enters the inner cavity of the buffer chamber 201 evenly.

[0043] To address the inefficiency caused by material accumulation during small particle collection, this invention avoids frequent manual intervention, improves the continuity of screening and packaging processes, and reduces the risk of secondary contamination due to material retention. Specifically, in this invention, a hopper 3 is installed at the bottom of the flexible-rigid screen 102, a third vibrator is installed on the hopper 3, and a first ton bag 5 is installed at the outlet of the hopper 3.

[0044] Small particles screened by the flexible-rigid screen 102 fall into the bottom hopper 3 through the screen holes. The third vibrator continuously generates high-frequency vibration, which makes the material evenly distributed in the hopper 3 and falls smoothly to the discharge port. Then the material is directly loaded into the first ton bag 5 through the discharge port. The vibration effectively prevents the material from accumulating due to electrostatic adsorption or moisture agglomeration. The open structure of the ton bag facilitates quick replacement and transportation.

[0045] Traditional screening devices do not have an iron removal function in the material conveying stage, which causes ferromagnetic impurities to enter the crushing structure 4 with the material. This not only accelerates the wear of the air hammer 402 and the crushing chamber 403, but also contaminates the final product. This solution adds an electromagnetic iron separator 13 in the conveying stage to block the mixing of ferromagnetic impurities from the source, extend the service life of the equipment and improve the purity of the product. In the embodiment provided by this utility model, an electromagnetic iron separator 13 is provided on the upper side of the belt conveyor 202.

[0046] When the belt conveyor 202 transports large particles collected in the buffer bin 201 to the feed pipe 203, the electromagnetic separator 13 uses magnetic force to attract ferromagnetic impurities mixed in the material. This device can cover the entire conveying width of the belt conveyor 202, ensuring comprehensive impurity removal. When the material passes under the electromagnetic separator 13, ferromagnetic substances are attracted to the surface of the separator, while non-magnetic materials continue to be conveyed to the crushing bin 403 for further processing.

[0047] The directional conveying pipeline ensures that the crushed particles enter the standard container along the preset path, avoiding particle size mixing caused by manual handling, and providing raw materials with uniform particle size for subsequent grinding processes. The ton bag temporary storage method can realize quick container replacement and maintain the continuity of crushing operations. Specifically, the bottom of the crushing chamber 403 is equipped with a discharge pipe, and the discharge port of the discharge pipe is equipped with a second ton bag 6.

[0048] After the material is crushed inside the crushing chamber 403, the particles fall into the second ton bag 6 through the bottom discharge pipe. The discharge pipe is inclined, with its axis at an angle controlled between 30 and 60 degrees, for example, 45 degrees, to achieve material sliding and conveying through gravity. The second ton bag 6 is suspended directly below the discharge pipe by a hoisting device. When the bag reaches the preset loading capacity, the bottom discharge valve can be closed and the empty bag replaced to achieve continuous operation.

[0049] In order to precisely control the timing of material discharge after crushing, prevent incompletely crushed material from mixing into the finished product, reduce the impact of dust on the production environment during operation, and ensure the uniformity of toner particle size, in this embodiment of the utility model, a closed structure 14 is provided on the discharge pipe. The closed structure 14 includes a drive device 1401 and an insert plate 1402. The drive device 1401 is disposed on the discharge pipe, and the insert plate 1402 is driven and connected to the drive device 1401, moving towards or away from the inner cavity of the discharge pipe to close the discharge pipe.

[0050] The drive device 1401 is a mechanism capable of outputting linear motion power, specifically an electric push rod or a hydraulic cylinder. Its function is to drive the slide plate 1402 to complete the opening and closing action. The slide plate 1402 is a plate-shaped structure with a sealing function, specifically made of stainless steel or carbon steel as a rectangular thin plate. Its function is to completely cover the cross-section of the discharge pipe through the moving path to achieve a seal. After the crushing chamber 403 completes the crushing of the material, the drive device 1401 pushes the slide plate 1402 to move horizontally into the discharge pipe, so that the slide plate 1402 completely blocks the material falling channel. At this time, the ton bag can be replaced or the equipment can be maintained. When it is necessary to resume discharge, the drive device 1401 moves in the opposite direction to drive the slide plate 1402 out of the pipe cross-section, and the material can fall normally into the second ton bag 6. This closed structure 14 realizes the pipe opening and closing control through mechanical transmission, avoiding the safety hazards of manual operation.

[0051] In order to suppress secondary pollution of material particles by dust during the crushing process, avoid the formation of agglomerates due to dust adhesion, ensure the particle size uniformity of subsequent grinding processes, prevent equipment jamming caused by dust accumulation, and significantly improve the air quality of the production environment, in the embodiments of this utility model, dust suction hoods 10 are provided at the top of the buffer chamber 201, the discharge port of the belt conveyor 202, and the inlet of the second ton bag 6. Each dust suction hood 10 is connected to a dust removal pipe 9, and a pulse bag dust collector 8 is provided at the outlet of each dust removal pipe 9. A high-pressure blower 7 is connected to the outlet of the pulse bag dust collector 8.

[0052] The dust hood 10 refers to a metal hood with a conical opening, which can be made of stainless steel welded structure. Its conical opening is arranged in the direction of dust dispersion to capture dust generated during material transportation. The dust removal duct 9 refers to a metal duct with flange connection, which can be made of spiral duct. It transports the collected dust to the dust removal device through negative pressure airflow. The pulse bag dust collector 8 refers to a box-type filter device with built-in membrane filter bags, which can be made of compartment back-blowing structure. It removes the dust accumulated on the surface of the filter bags by pulse jet of compressed air. The high-pressure fan 7 refers to a centrifugal ventilation device, which can be made of variable frequency motor drive. The air volume of the dust removal system is controlled by adjusting the speed.

[0053] During the material transfer process via buffer silo 201, conveyor belt 202, and ton packaging, dust hood 10 captures dust through negative pressure. The dust-laden airflow enters pulse bag filter 8 through dust removal pipe 9. After the membrane filter bags block dust particles, clean air is discharged by high-pressure fan 7. When the filter bag pressure difference reaches the set value, the pulse back-flushing device sprays compressed air in each compartment, shaking off the attached dust to the ash hopper for centralized collection, thereby achieving dust control throughout the entire process.

[0054] Furthermore, the pulse bag filter 8 includes a housing, a pulse back-blowing device, and a dust hopper. The housing is located at the air inlet of each dust collection duct 9 and is equipped with membrane filter bags inside for collecting dust. The pulse back-blowing device is located at the top of the housing for blowing away dust, and the dust hopper is located at the bottom of the housing for collecting the settled dust.

[0055] Membrane-coated filter bags refer to filter materials with a microporous membrane covering their surface. Specifically, polytetrafluoroethylene (PTFE) membrane-coated needle-punched felt can be used. The dense layer formed on its surface can block the penetration of fine dust while reducing filtration resistance. A pulse-jet cleaning device is a mechanism that uses compressed air to instantaneously clean the filter bags. Specifically, a solenoid valve can control the opening and closing of the jet pipe, periodically releasing high-pressure airflow to impact the inner wall of the filter bag. A dust hopper is a conical dust collection container, typically welded from carbon steel plates, with internal guide plates to prevent dust accumulation. A vibrator is a high-frequency vibration device, specifically an eccentric block electric vibrator, bolted to the side wall of the dust hopper.

[0056] After the dust-laden gas enters the chamber through dust collection duct 9, the airflow velocity decreases, causing large dust particles to naturally settle into the ash hopper, while fine dust is intercepted on the surface by the membrane filter bags. As the dust layer on the filter bag surface thickens, the pulse back-flushing device is activated according to a set cycle. Compressed air is released instantaneously through the blowpipe, creating a reverse airflow that impacts the filter bags, causing them to expand and shake, and the attached dust then falls off into the ash hopper. The dust collected in the ash hopper is discharged through the bottom discharge valve, while the purified gas passes through the filter bags into the clean air chamber before being discharged.

[0057] Furthermore, a conveying pipe is installed at the bottom of the ash hopper, and the end of the conveying pipe away from the ash hopper is connected to the first ton bag 5.

[0058] The dust in the ash hopper contains not only some dust but also some powdery materials. It would be wasteful to directly discharge these powdery materials into the waste bin along with the dust. In addition, some dust does not affect material processing. Therefore, a conveying pipe is installed at the bottom of the ash hopper and connected to the first ton bag 5 to transport the material collected in the ash hopper into the first ton bag 5 as part of the material to be processed. The conveying pipe can be placed horizontally with a spiral conveying structure inside to transport the material in the ash hopper into the first ton bag 5, or the pipe can be placed at an angle with the end connected to the return at a higher position, and the height of the connection point with the first ton bag is lower than the height of the ash hopper, so that the material in the ash hopper falls naturally into the first ton bag 5.

[0059] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. An integrated screening device, characterized in that, include: The screening mechanism includes a flexible rigid screen and a first vibrator. The flexible rigid screen is used to screen small particulate materials, and the first vibrator is disposed at the bottom of the flexible rigid screen to drive the flexible rigid screen to vibrate. The feeding structure includes a buffer bin, a belt conveyor, and a discharge pipe. The buffer bin collects large particles after screening by the flexible-rigid screen. The inlet of the belt conveyor is located at the outlet of the buffer bin, and the inlet of the discharge pipe is located at the outlet of the belt conveyor, to transport the large particles after screening by the flexible-rigid screen. The crushing structure includes a crushing chamber, a driving component, and multiple air hammers. The crushing chamber is located at the outlet of the feeding pipe, the driving component is located inside the crushing chamber, and the multiple air hammers are driven and connected to the driving component for crushing large particles of material.

2. The integrated screening device as described in claim 1, characterized in that, The flexible rigid screen is inclined downward toward the buffer chamber.

3. The integrated screening device as described in claim 1, characterized in that, The flexible rigid screen is provided with a guide plate between the buffer chambers, and a second vibrator is provided at the bottom of the guide plate.

4. The integrated screening device as described in claim 1, characterized in that, The bottom of the flexible screen is equipped with a hopper, a third vibrator is installed on the hopper, and a first ton bag is installed at the outlet of the hopper.

5. The integrated screening device as described in claim 1, characterized in that, An electromagnetic separator is installed on the upper side of the belt conveyor.

6. The integrated screening device as described in claim 4, characterized in that, The bottom of the crushing chamber is equipped with a discharge pipe, and the discharge port of the discharge pipe is equipped with a second ton bag.

7. The integrated screening device as described in claim 6, characterized in that, The discharge pipe is provided with a closed structure, the closed structure including: A drive device is installed on the discharge pipe; The insert plate, driven by the drive device, moves toward or away from the inner cavity of the discharge pipe to close the discharge pipe.

8. The integrated screening device as described in claim 6, characterized in that, Dust hoods are installed at the top of the buffer hopper, the outlet of the belt conveyor, and the inlet of the second ton bag. Each dust hood is connected to a dust removal pipe, and a pulse bag dust collector is installed at the outlet of each dust removal pipe. A high-pressure fan is connected to the outlet of the pulse bag dust collector.

9. The integrated screening device as described in claim 8, characterized in that, The pulse bag filter includes: The housing is equipped with air inlets for each of the dust removal pipes, and has membrane filter bags inside for collecting dust. A pulse backflushing device is installed on the top of the housing for blowing away dust; A dust hopper, located at the bottom of the housing, is used to collect the settled dust.

10. The integrated screening device as described in claim 9, characterized in that, A conveying pipe is provided at the bottom of the ash hopper, and the end of the conveying pipe away from the ash hopper is connected to the first ton bag.

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