Device for recovering aggregates from concrete solid waste

Abstract

The present application relates to the technical field of aggregate recycling, and particularly relates to a device for recycling aggregate from concrete solid waste, which comprises a shell, a feeding mechanism, a dust falling mechanism, and a centrifugal fan. The dust falling mechanism is fixedly connected to the outside of the shell, and the top of the dust falling mechanism is fixedly connected to the outside of the feeding mechanism. The dust falling mechanism is driven by a driving motor to rotate the fan blades, so that the dust generated during screening can be brought into the air inlet shell. At this time, the arc-shaped scraper rotates with the rotating shaft to prevent the dust from blocking the holes opened on the outside of the air inlet shell. Subsequently, the entering dust can be intercepted by the filter plate and be thrown into the collecting assembly under the centrifugal action of the centrifugal fan to complete the collection. The centrifugal fan slides along the surface of the filter plate while rotating, which can prevent the dust adhered to the surface of the filter plate from being too much to reduce the suction force, thereby preventing the dust generated during screening from spreading outward to pollute the air.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aggregate recycling, in particular to an aggregate recycling device in concrete solid waste. BACKGROUND

[0002] With the rapid development of the construction industry, the use of concrete is increasing, which also generates a large amount of concrete solid waste. These wastes contain a large amount of aggregate, which will not only waste resources but also pollute the environment if discarded directly. Therefore, it is of great significance to recycle the aggregate in concrete solid waste.

[0003] In the prior art, when the aggregate in the concrete solid waste is screened, the dust mixed in the waste may spread into the air during screening, thereby polluting the environment, and if not treated, it will also harm the health of the workers. SUMMARY

[0004] In view of the deficiencies of the prior art, the technical scheme adopted by the present application to solve the technical problems is: an aggregate recycling device in concrete solid waste, comprising: a shell; a feeding mechanism, the bottom of the feeding mechanism is fixedly connected with the top of the shell; a dust falling mechanism, the outer side of the dust falling mechanism is fixedly connected with the outer side of the shell, and the top of the dust falling mechanism is fixedly connected with the outer side of the feeding mechanism; a screening mechanism, the outer side of the screening mechanism is rotatably connected with the inner side of the shell, and the outer side of the screening mechanism is fixedly connected with the bottom of the feeding mechanism.

[0005] The dust falling mechanism comprises a mounting plate, the inner side of the mounting plate is fixedly connected with an air inlet shell, the bottom of the air inlet shell is fixedly connected with a collecting assembly, the top of the collecting assembly is provided with a driving motor, the output end of the driving motor is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a fan blade, the outer side of the fan blade is provided with a centrifugal fan, the inner wall of the centrifugal fan is fixedly connected with the outer wall of the rotating shaft at the center, the outer wall of the rotating shaft is fixedly connected with an arc-shaped scraping plate, and the inner wall of the air inlet shell is fixedly connected with a filter plate. The driving motor drives the fan blade to rotate, so that the dust generated during screening can be brought into the air inlet shell as a medium, and at this time the arc-shaped scraping plate rotates with the rotating shaft to prevent the dust from blocking the holes opened on the outer side of the air inlet shell.

[0006] Preferably, the outer side of the mounting plate is fixedly connected with the outer wall of the shell through bolts, the outer side of the air inlet shell is fixedly connected with the outer side of the driving motor, the outer wall of the rotating shaft is rotatably connected with the center of the inner wall of the air inlet shell, the outer wall of the centrifugal fan is slidably connected with the outer wall of the filter plate, the center of the inner wall of the filter plate is rotatably connected with the outer wall of the rotating shaft, and the outer wall of the arc-shaped scraping plate is slidably connected with the outer side of the air inlet shell. The entering dust can be intercepted by the filter plate and be thrown into the collecting assembly under the centrifugal action of the centrifugal fan to complete the collection. The centrifugal fan also slides along the surface of the filter plate while rotating, which can prevent the dust attached to the surface of the filter plate from being too much to reduce the suction.

[0007] Preferably, the collecting assembly comprises a collecting box, the bottom of the collecting box is rotationally connected with a wheel disc, the top of the wheel disc is fixedly connected with a rotating rod, the outer wall of the rotating rod is fixedly connected with stirring blades and wall scraping rods in a symmetrical manner, the outer wall of the collecting box is fixedly connected with a water inlet pipe and a sewage discharge pipe, clean water is added into the collecting box through the water inlet pipe, and then the dust entering the collecting box can be mixed with the clean water in the collecting box to form sewage, so that the dust entering the collecting box can be collected.

[0008] Preferably, the top of the collecting box is fixedly connected with the bottom of the air inlet shell, the outer wall of the rotating rod is rotationally connected with the center of the bottom of the collecting box, the wall scraping rods are located on the outer side of the stirring blades, the water inlet pipe is located on the top of the sewage discharge pipe, the stirring blades and the wall scraping rods rotate together with the rotating rod, the stirring blades can make the sewage and the dust mix more uniformly when rotating, and the wall scraping rods can prevent dust and other impurities from adhering to the inner wall of the collecting box when rotating.

[0009] Preferably, the feeding mechanism comprises a feeding hopper, the outer wall of the top of the feeding hopper is fixedly connected with a return air pipe, the outer side of the return air pipe is fixedly connected with an air guide pipe, the inner wall of the top of the feeding hopper is fixedly connected with a wind shielding plate, a plurality of air vents are formed in the wall of the feeding hopper, the bottom of the feeding hopper is fixedly connected with the inner wall of the shell, and the bottom of the feeding hopper is fixedly connected with the outer side of the screening mechanism. When the fan blades rotate, the air sucked in is introduced into the return air pipe through the air guide pipe, and then the air in the return air pipe is discharged into the feeding hopper through the air vents and flows downward under the shielding of the wind shielding plate. At this time, the discharged air can flow downward along the inclined surface of the inner wall of the feeding hopper, so that the air flow rate in the feeding hopper can be accelerated.

[0010] Preferably, the screening mechanism comprises a screening cylinder, the outer side of the screening cylinder is rotationally connected with a fixed cylinder, the bottom of the fixed cylinder is provided with a motor, the output end of the motor is fixedly connected with a gear, the inner wall of the screening cylinder is fixedly connected with a spiral plate, the outer wall of the screening cylinder is fixedly connected with an anti-adhesion assembly, and the outer wall of the screening cylinder is fixedly connected with a gear ring. The motor drives the gear ring to rotate through the gear, at this time, the screening cylinder rotates together with the gear ring in the shell, and the spiral plate rotates together with the screening cylinder. The spiral plate can transport the waste falling into the fixed cylinder to the screening cylinder while rotating.

[0011] Preferably, the inner wall of the screening cylinder is rotationally connected with the inner wall of the shell through a limiting wheel, the outer wall of the fixed cylinder is fixedly connected with the inner wall of the shell, the top of the fixed cylinder is fixedly connected with the bottom of the feeding hopper, the outer side of the spiral plate is slidingly connected with the inner wall of the fixed cylinder, the inner wall of the shell is fixedly connected with the outer side of the motor, the gear ring is engaged with the gear, the outer side of the anti-adhesion assembly is slidingly connected with the inner wall of the shell, and the waste continuously rolls in the screening cylinder under the joint action of the thrust of the spiral plate and the gravity of the waste. At this time, the impurities such as sand mixed in the waste can fall from the bottom of the shell through the holes formed on the surface of the screening cylinder, and the aggregate will be transported to the outside of the screening cylinder with the rotation of the spiral plate.

[0012] Preferably, the anti-adhesion assembly comprises a fixing ring, the outer side of the fixing ring is fixedly connected with a fixing shaft, the outer wall of the fixing shaft is rotatably connected with a rotating frame, the outer wall of the rotating frame is fixedly connected with a scraper, the outer side of the rotating frame is fixedly connected with a protective shell, the inner side of the protective shell is fixedly connected with a torsion spring, the fixing ring rotates together with the screen cylinder, and simultaneously drives the fixing shaft to rotate along the central axis of the screen cylinder, at this time, the scraper on the outer side of the rotating frame can slide along the inner wall of the shell, and the silt adhered to the inner wall of the shell can be scraped off in the process of sliding.

[0013] Preferably, the fixing ring is fixedly connected with the two sides of the outer wall of the screen cylinder, the outer wall of the fixing shaft is rotatably connected with the inner side of the protective shell, the end of the torsion spring away from the protective shell is fixedly connected with the outer side of the fixing ring, and the outer side of the scraper is slidably connected with the inner wall of the shell, under the torsion of the torsion spring, the rotating frame is always in contact with the inner wall of the shell through the rotating frame driving the scraper, so that a gap between the scraper and the inner wall of the shell caused by abrasion after long-time use can be prevented, and the protective shell can also prevent the silt and impurities from contacting the torsion spring, so that the running of the torsion spring is prevented from being stuck.

[0014] The beneficial effects of the present application are as follows:

[0015] 1. The present application is provided with a screening mechanism, the motor drives the gear ring to rotate through the gear, at this time, the screen cylinder rotates together with the gear ring in the shell, and the spiral plate rotates together with the screen cylinder, the spiral plate can transport the waste falling into the fixed cylinder into the screen cylinder while rotating, at this time, the waste continuously rolls in the screen cylinder under the combined action of the pushing force of the spiral plate and the gravity of the waste, and the silt and impurities mixed in the waste can fall from the bottom of the shell through the holes opened on the surface of the screen cylinder, and the aggregate is transported out of the screen cylinder along with the rotation of the spiral plate, so that the aggregate and the silt in the waste can be separated.

[0016] 2. The present application is provided with an anti-adhesion assembly, the fixing ring rotates together with the screen cylinder, and simultaneously drives the fixing shaft to rotate along the central axis of the screen cylinder, at this time, the scraper on the outer side of the rotating frame can slide along the inner wall of the shell, and the silt adhered to the inner wall of the shell can be scraped off in the process of sliding, in this process, under the torsion of the torsion spring, the scraper is always in contact with the inner wall of the shell, so that a gap between the scraper and the inner wall of the shell caused by abrasion after long-time use can be prevented, and the protective shell can also prevent the silt and impurities from contacting the torsion spring, so that the running of the torsion spring is prevented from being stuck.

[0017] 3. The application is provided with a dust reduction mechanism, a driving motor drives the fan blade to rotate, so that the dust generated during screening can be taken into the air inlet shell by air medium, at this time, the arc-shaped scraping plate rotates with the rotating shaft, which can prevent the dust from blocking the holes opened outside the air inlet shell, the subsequently entering dust can be intercepted by the filter plate, and under the centrifugal action of the centrifugal fan, it is thrown into the collection assembly to complete the collection. The centrifugal fan also slides along the surface of the filter plate while rotating, which can prevent the dust attached to the surface of the filter plate from reducing the suction force, thereby preventing the dust generated during screening from spreading outward and polluting the air.

[0018] 4. The application is provided with a feeding mechanism, the air sucked by the fan blade enters the return air pipe through the air guide pipe, and then the air in the return air pipe is discharged into the feeding hopper through a plurality of air holes and flows downward under the shielding of the wind shield. At this time, the discharged air can flow downward along the inclined surface of the inner wall of the feeding hopper, thereby increasing the air flow rate in the feeding hopper and making the air take the dust generated during feeding and flow downward with the air, thereby reducing the possibility of dust diffusion during feeding.

[0019] 5. The application is provided with a collection assembly, clean water is added to the collection box through the water inlet pipe, and then the entering dust can be mixed with the clean water in the collection box to form sewage, thereby collecting the dust entering the collection box. When it is necessary to discharge the sewage in the collection box, the rotating rod can be driven to rotate by rotating the rotating disc, at this time, the stirring blade and the wall scraping rod rotate with the rotating rod. The stirring blade can make the sewage and dust mix more uniformly during rotation, and the wall scraping rod can prevent dust and other impurities from adhering to the inner wall of the collection box during rotation. Then the sewage can be discharged outside the collection box through the sewage discharge pipe. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the front view of the application;

[0021] Figure 2 is the sectional view of the application;

[0022] Figure 3 is the structure schematic view of the screening mechanism of the application;

[0023] Figure 4 is the structure schematic view of the anti-adhesion assembly of the application;

[0024] Figure 5 is the structure schematic view of the dust reduction mechanism of the application;

[0025] Figure 6 is the structure schematic view of the collection assembly of the application;

[0026] Figure 7 is the structure schematic view of the feeding mechanism of the application.

[0027] In the figure: 1, the shell; 2, feeding mechanism; 3, dust falling mechanism; 4, screening mechanism; 21, feeding hopper; 22, return air pipe; 23, air guide pipe; 24, air hole; 25, wind shield; 31, mounting plate; 32, air inlet shell; 33, collection assembly; 34, drive motor; 35, rotating shaft; 36, arc-shaped scraping plate; 37, fan blade; 38, centrifugal fan; 39, filter plate; 331, collection box; 332, wheel disc; 333, rotating rod; 334, stirring blade; 335, wall scraping rod; 336, water inlet pipe; 337, sewage pipe; 41, screen cylinder; 42, fixed cylinder; 43, spiral plate; 44, motor; 45, gear; 46, gear ring; 47, anti-adhesion assembly; 471, fixed ring; 472, fixed shaft; 473, rotating frame; 474, scraper; 475, protective shell; 476, torsion spring. DETAILED DESCRIPTION

[0028] The application will be further described below in conjunction with the drawings and specific embodiments. The embodiments of the application are given for illustrative and descriptive purposes only and are not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments are chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application in various embodiments and with various modifications as are suited to the particular use contemplated.

[0029] Embodiment: Please refer to Figure 1 - Figure 7 The application provides a technical solution: a concrete solid waste aggregate recycling device, comprising:

[0030] The shell 1; the feeding mechanism 2, the bottom of the feeding mechanism 2 is fixedly connected with the top of the shell 1; the dust falling mechanism 3, the outer side of the dust falling mechanism 3 is fixedly connected with the outer side of the shell 1, and the top of the dust falling mechanism 3 is fixedly connected with the outer side of the feeding mechanism 2; the screening mechanism 4, the outer side of the screening mechanism 4 is rotatably connected with the inner side of the shell 1, and the outer side of the screening mechanism 4 is fixedly connected with the bottom of the feeding mechanism 2; the crushed concrete solid waste is put into the shell 1 through the feeding mechanism 2, and then the waste is screened by the screening mechanism 4, so that the mud and other impurities in the waste are separated from the aggregate; in this process, the device can be dust falling treated by the dust falling mechanism 3 to prevent dust from spreading and polluting the environment in the process of separation;

[0031] The dust falling mechanism 3 comprises a mounting plate 31, the inner side of the mounting plate 31 is fixedly connected with an air inlet shell 32, the bottom of the air inlet shell 32 is fixedly connected with a collecting assembly 33, the top of the collecting assembly 33 is provided with a driving motor 34, the output end of the driving motor 34 is fixedly connected with a rotating shaft 35, the outer wall of the rotating shaft 35 is fixedly connected with a fan blade 37, the outer side of the fan blade 37 is provided with a centrifugal fan 38, the inner wall of the centrifugal fan 38 is fixedly connected with the outer wall of the rotating shaft 35 at the center, the outer wall of the rotating shaft 35 is fixedly connected with an arc-shaped scraping plate 36, the inner wall of the air inlet shell 32 is fixedly connected with a filter plate 39, the outer side of the mounting plate 31 is fixedly connected with the outer wall of the shell body 1 through bolts, the outer side of the air inlet shell 32 is fixedly connected with the outer side of the driving motor 34, the outer wall of the rotating shaft 35 is rotatably connected with the center of the inner wall of the air inlet shell 32, the outer wall of the centrifugal fan 38 is slidably connected with the outer wall of the filter plate 39, the center of the inner wall of the filter plate 39 is rotatably connected with the outer wall of the rotating shaft 35, the outer wall of the arc-shaped scraping plate 36 is slidably connected with the outer side of the air inlet shell 32, the dust falling mechanism 3 is fixed with the shell body 1 through the mounting plate 31, then the driving motor 34 drives the fan blade 37 to rotate, air as a medium can carry the dust generated during screening into the air inlet shell 32, at this time, the arc-shaped scraping plate 36 rotates with the rotating shaft 35, which can prevent the dust from blocking the holes opened on the outer side of the air inlet shell 32 when entering, then the entering dust can be intercepted by the filter plate 39 and be thrown into the collecting assembly 33 under the centrifugal action of the centrifugal fan 38 to complete the collection, the centrifugal fan 38 also slides along the surface of the filter plate 39 while rotating, which can prevent the dust attached to the surface of the filter plate 39 from being too much to reduce the suction force, thereby preventing the dust generated during screening from spreading outward to pollute the air.

[0032] The collecting assembly 33 comprises a collecting box 331, the bottom of the collecting box 331 is rotationally connected with a wheel disc 332, the top of the wheel disc 332 is fixedly connected with a rotating rod 333, the outer wall of the rotating rod 333 is fixedly connected with a stirring blade 334 and a wall scraping rod 335 in a symmetrical manner, the outer wall of the collecting box 331 is fixedly connected with a water inlet pipe 336 and a sewage outlet pipe 337, the top of the collecting box 331 is fixedly connected with the bottom of the air inlet shell 32, the outer wall of the rotating rod 333 is rotationally connected with the center of the bottom of the collecting box 331, the wall scraping rod 335 is located at the outer side of the stirring blade 334, the water inlet pipe 336 is located at the top of the sewage outlet pipe 337, when the collecting assembly 33 collects dust, clean water is added into the collecting box 331 through the water inlet pipe 336, then the dust entering the collecting box 331 can be mixed with the clean water in the collecting box 331 to form sewage, thereby the dust entering the collecting box 331 can be collected, when the sewage in the collecting box 331 needs to be discharged, the wheel disc 332 can be rotated to drive the rotating rod 333 to rotate, at this time, the stirring blade 334 and the wall scraping rod 335 rotate together with the rotating rod 333, the stirring blade 334 can make the sewage and the dust mixed more uniformly when rotating, the wall scraping rod 335 can prevent dust and other impurities from adhering to the inner wall of the collecting box 331 when rotating, then the sewage can be discharged to the outside of the collecting box 331 through the sewage outlet pipe 337.

[0033] The feeding mechanism 2 comprises a feeding hopper 21, the outer wall of the top of the feeding hopper 21 is fixedly connected with an air return pipe 22, the outer side of the air return pipe 22 is fixedly connected with a gas guide pipe 23, the inner wall of the top of the feeding hopper 21 is fixedly connected with a wind shielding plate 25, the wall of the feeding hopper 21 is provided with a ventilation hole 24, the bottom of the feeding hopper 21 is fixedly connected with the inner wall of the shell 1, the bottom of the feeding hopper 21 is fixedly connected with the outer side of the screening mechanism 4, when the fan blade 37 rotates, the air sucked in enters the air return pipe 22 through the gas guide pipe 23, then the air in the air return pipe 22 is discharged into the feeding hopper 21 through the ventilation holes 24 and flows downward under the shielding of the wind shielding plate 25, at this time, the discharged air can flow downward along the inclined surface of the inner wall of the feeding hopper 21, thereby the air flow rate in the feeding hopper 21 can be accelerated, and the dust generated when the air carries the material can flow downward together with the air, thereby reducing the possibility of dust diffusion when the material is fed.

[0034] The screening mechanism 4 comprises a screening cylinder 41, the outer side of the screening cylinder 41 is rotationally connected with a fixed cylinder 42, the bottom of the fixed cylinder 42 is provided with a motor 44, the output end of the motor 44 is fixedly connected with a gear 45, the inner wall of the screening cylinder 41 is fixedly connected with a spiral plate 43, the outer wall of the screening cylinder 41 is fixedly connected with an anti-adhesion assembly 47, the outer wall of the screening cylinder 41 is fixedly connected with a gear ring 46, the inner wall of the screening cylinder 41 is rotationally connected with the inner wall of the shell 1 through a limiting wheel, the outer wall of the fixed cylinder 42 is fixedly connected with the inner wall of the shell 1, the top of the fixed cylinder 42 is fixedly connected with the bottom of the feeding hopper 21, the outer side of the spiral plate 43 is slidingly connected with the inner wall of the fixed cylinder 42, the inner wall of the shell 1 is fixedly connected with the outer side of the motor 44, the gear ring 46 is engaged with the gear 45, the outer side of the anti-adhesion assembly 47 is slidingly connected with the inner wall of the shell 1, the motor 44 drives the gear ring 46 to rotate through the gear 45, at this time, the screening cylinder 41 rotates together with the gear ring 46 in the shell 1, meanwhile, the spiral plate 43 rotates together with the screening cylinder 41, the spiral plate 43 can transport the waste falling into the fixed cylinder 42 into the screening cylinder 41 while rotating, at this time, the waste continuously rolls in the screening cylinder 41 under the joint action of the pushing force of the spiral plate 43 and the gravity of the waste itself, at this time, the impurities such as mud mixed in the waste can fall from the bottom of the shell 1 through the holes opened on the surface of the screening cylinder 41, and the aggregate can be transported outside the screening cylinder 41 along with the rotation of the spiral plate 43, thereby the aggregate in the waste can be separated from the mud.

[0035] The anti-adhesion assembly 47 comprises a fixed ring 471, the outer side of the fixed ring 471 is fixedly connected with a fixed shaft 472, the outer wall of the fixed shaft 472 is rotationally connected with a rotating frame 473, the outer wall of the rotating frame 473 is fixedly connected with a scraper 474, the outer side of the rotating frame 473 is fixedly connected with a protective shell 475, the inner side of the protective shell 475 is fixedly connected with a torsion spring 476, the fixed ring 471 is fixedly connected with the two sides of the outer wall of the screening cylinder 41, the outer wall of the fixed shaft 472 is rotationally connected with the inner side of the protective shell 475, the end, away from the protective shell 475, of the torsion spring 476 is fixedly connected with the outer side of the fixed ring 471, the outer side of the scraper 474 is slidingly connected with the inner wall of the shell 1, the anti-adhesion assembly 47 can clean the mud attached to the inner wall of the shell 1, the fixed ring 471 rotates together with the screening cylinder 41, meanwhile, the fixed shaft 472 rotates together along the central axis of the screening cylinder 41, at this time, the scraper 474 on the outer side of the rotating frame 473 can slide along the inner wall of the shell 1, and the mud attached to the inner wall of the shell 1 can be scraped off in the process of sliding, in the process, the rotating frame 473 always contacts with the inner wall of the shell 1 through the scraper 474 driven by the rotating frame 473 under the torsion action of the torsion spring 476, which can prevent the gap between the scraper 474 and the inner wall of the shell 1 due to abrasion after long time use, meanwhile, the protective shell 475 can also prevent the impurities such as mud from contacting with the torsion spring 476, which causes the torsion spring 476 to run stuck.

[0036] Working principle:

[0037] In use, the fixed waste material after the concrete is put into the shell 1 through the feed mechanism 2, and then the waste material is screened by the screening mechanism 4, so that the sand and other impurities in the waste material are separated from the aggregate. In this process, the device can be dusted by the dust reduction mechanism 3 to prevent dust from spreading and polluting the environment during separation.

[0038] During screening, the motor 44 drives the gear 45 to rotate the gear ring 46, at which time the screen cylinder 41 rotates together with the gear ring 46 in the shell 1, and the spiral plate 43 rotates together with the screen cylinder 41. At the same time, the spiral plate 43 can transport the waste material falling into the fixed cylinder 42 into the screen cylinder 41. At this time, the waste material is constantly rolling in the screen cylinder 41 under the combined action of the pushing force of the spiral plate 43 and its own gravity. At this time, the sand and other impurities mixed in the waste material can fall from the bottom of the shell 1 through the holes opened on the surface of the screen cylinder 41, and the aggregate will be transported out of the screen cylinder 41 by the rotation of the spiral plate 43. Thus, the aggregate in the waste material can be separated from the sand.

[0039] In this process, the anti-adhesion assembly 47 can clean the sand attached to the inner wall of the shell 1. The fixed ring 471 rotates together with the screen cylinder 41, and drives the fixed shaft 472 to rotate along the central axis of the screen cylinder 41. At this time, the scraper 474 outside the rotating frame 473 can slide along the inner wall of the shell 1 and scrape off the sand attached to the inner wall of the shell 1 in the process. In this process, under the action of the torsional force of the torsional spring 476, the rotating frame 473 is always in contact with the inner wall of the shell 1 through the rotating frame 473 driving the scraper 474, which can prevent the scraper 474 from having a gap with the inner wall of the shell 1 due to wear after long-term use. The protective shell 475 can also prevent the sand and other impurities from contacting the torsional spring 476, causing the torsional spring 476 to run and jam.

[0040] When dusting, the dust reduction mechanism 3 is fixed to the shell 1 by the mounting plate 31, and then the driving motor 34 drives the fan blade 37 to rotate, which can bring the dust generated during screening into the air inlet shell 32 with air as the medium. At this time, the arc-shaped scraper 36 rotates together with the rotating shaft 35, which can prevent the dust from blocking the holes opened on the outer side of the air inlet shell 32 when entering. Then the entering dust can be intercepted by the filter plate 39 and thrown into the collection assembly 33 under the centrifugal action of the centrifugal fan 38 to complete the collection. The centrifugal fan 38 also slides along the surface of the filter plate 39 while rotating, which can prevent too much dust from adhering to the surface of the filter plate 39, causing the suction force to decrease. Thus, the dust generated during screening can be prevented from spreading outward and polluting the air.

[0041] In this process, the air sucked in by the rotation of the fan blade 37 enters the return air duct 22 through the air guide pipe 23, and then the air in the return air duct 22 is discharged into the feeding hopper 21 through the air holes 24 and flows downward under the shielding of the air shielding plate 25. At this time, the discharged air can flow downward along the inclined surface of the inner wall of the feeding hopper 21, thereby accelerating the air flow rate in the feeding hopper 21 and making the dust generated when the material is fed flow downward together with the air, so as to reduce the possibility of dust diffusion when the material is fed.

[0042] When the dust is collected by the collecting assembly 33, clean water is added into the collecting box 331 through the water inlet pipe 336, and then the entering dust can be mixed with the clean water in the collecting box 331 to form sewage, so as to collect the dust entering the collecting box 331. When it is necessary to discharge the sewage in the collecting box 331, the rotating rod 333 can be driven to rotate by rotating the rotating disc 332. At this time, the stirring blade 334 and the wall scraping rod 335 rotate together with the rotating rod 333. The stirring blade 334 can make the sewage and the dust mixed more uniformly when rotating. The wall scraping rod 335 can prevent dust and other impurities from adhering to the inner wall of the collecting box 331 when rotating. Then the sewage can be discharged outside the collecting box 331 through the sewage discharge pipe 337.

[0043] Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art and related fields without creative labor should belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. A device for recovering aggregates from concrete solid waste, characterized in that, include: Shell (1); Feeding mechanism (2), the bottom of which is fixedly connected to the top of housing (1); Dust suppression mechanism (3), the outer side of the dust suppression mechanism (3) is fixedly connected to the outer side of the housing (1), and the top of the dust suppression mechanism (3) is fixedly connected to the outer side of the feeding mechanism (2); Screening mechanism (4), the outer side of the screening mechanism (4) is rotatably connected to the inner side of the housing (1), and the outer side of the screening mechanism (4) is fixedly connected to the bottom of the feeding mechanism (2); The dust collection mechanism (3) includes a mounting plate (31), an air inlet shell (32) is fixedly connected to the inner side of the mounting plate (31), a collection component (33) is fixedly connected to the bottom of the air inlet shell (32), a drive motor (34) is provided on the top of the collection component (33), a rotating shaft (35) is fixedly connected to the output end of the drive motor (34), a fan blade (37) is fixedly connected to the outer wall of the rotating shaft (35), a centrifugal fan (38) is provided on the outer side of the fan blade (37), the center of the inner wall of the centrifugal fan (38) is fixedly connected to the outer wall of the rotating shaft (35), an arc-shaped scraper (36) is fixedly connected to the outer wall of the rotating shaft (35), and a filter plate (39) is fixedly connected to the inner wall of the air inlet shell (32). The outer side of the mounting plate (31) is fixedly connected to the outer wall of the housing (1) by bolts. The outer side of the air inlet shell (32) is fixedly connected to the outer side of the drive motor (34). The outer wall of the rotating shaft (35) is rotatably connected to the center of the inner wall of the air inlet shell (32). The outer wall of the centrifugal fan (38) is slidably connected to the outer wall of the filter plate (39). The center of the inner wall of the filter plate (39) is rotatably connected to the outer wall of the rotating shaft (35). The outer wall of the arc-shaped scraper (36) is slidably connected to the outer side of the air inlet shell (32). The feeding mechanism (2) includes a feeding hopper (21), a return air pipe (22) is fixedly connected to the outer wall of the top of the feeding hopper (21), a guide pipe (23) is fixedly connected to the outer side of the return air pipe (22), a wind shield (25) is fixedly connected to the inner wall of the top of the feeding hopper (21), a ventilation hole (24) is opened in the wall of the feeding hopper (21), the bottom of the feeding hopper (21) is fixedly connected to the inner wall of the shell (1), and the bottom of the feeding hopper (21) is fixedly connected to the outer side of the screening mechanism (4). The screening mechanism (4) includes a screen cylinder (41), a fixed cylinder (42) is rotatably connected to the outside of the screen cylinder (41), a motor (44) is provided at the bottom of the fixed cylinder (42), a gear (45) is fixedly connected to the output end of the motor (44), a spiral plate (43) is fixedly connected to the inner wall of the screen cylinder (41), an anti-adhesion component (47) is fixedly connected to the outer wall of the screen cylinder (41), and a gear ring (46) is fixedly connected to the outer wall of the screen cylinder (41). The inner wall of the screen cylinder (41) is rotatably connected to the inner wall of the housing (1) through a limiting wheel. The outer wall of the fixed cylinder (42) is fixedly connected to the inner wall of the housing (1). The top of the fixed cylinder (42) is fixedly connected to the bottom of the feed hopper (21). The outer side of the spiral plate (43) is slidably connected to the inner wall of the fixed cylinder (42). The inner wall of the housing (1) is fixedly connected to the outer side of the motor (44). The gear ring (46) meshes with the gear (45). The outer side of the anti-adhesion component (47) is slidably connected to the inner wall of the housing (1). The anti-adhesion assembly (47) includes a fixing ring (471), a fixing shaft (472) is fixedly connected to the outer side of the fixing ring (471), a rotating frame (473) is rotatably connected to the outer wall of the fixing shaft (472), a scraper (474) is fixedly connected to the outer wall of the rotating frame (473), a protective shell (475) is fixedly connected to the outer side of the rotating frame (473), and a torsion spring (476) is fixedly connected to the inner side of the protective shell (475).

2. The aggregate recycling device for concrete solid waste according to claim 1, characterized in that: The collection assembly (33) includes a collection box (331), a wheel (332) is rotatably connected to the bottom of the collection box (331), a rotating rod (333) is fixedly connected to the top of the wheel (332), a stirring blade (334) and a wall scraping rod (335) are symmetrically fixedly connected to the outer wall of the rotating rod (333), and a water inlet pipe (336) and a sewage outlet pipe (337) are fixedly connected to the outer wall of the collection box (331).

3. The aggregate recycling device for concrete solid waste according to claim 2, characterized in that: The top of the collection box (331) is fixedly connected to the bottom of the air inlet shell (32), the outer wall of the rotating rod (333) is rotatably connected to the center of the bottom of the collection box (331), the scraper rod (335) is located outside the stirring blade (334), and the water inlet pipe (336) is located at the top of the sewage pipe (337).

4. The aggregate recycling device for concrete solid waste according to claim 1, characterized in that: The fixing ring (471) is fixedly connected to both sides of the outer wall of the screen cylinder (41), the outer wall of the fixing shaft (472) is rotatably connected to the inner side of the protective shell (475), the end of the torsion spring (476) away from the protective shell (475) is fixedly connected to the outer side of the fixing ring (471), and the outer side of the scraper (474) is slidably connected to the inner wall of the shell (1).

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