Screening device for recycled asphalt concrete

Abstract

The present invention discloses a screening device for asphalt concrete recycled materials, relates to the technical field of material screening, and solves the problem that asphalt concrete stones stuck on the screening net are pressed through the screening net, causing the mesh holes of the screening net to deform, or causing the asphalt concrete stones to be further stuck on the screening net, resulting in increased difficulty in cleaning the screening net at a later time. The present invention comprises a screening box, a vibrating base is installed at the lower end of the screening box, a plurality of equidistantly distributed screens are installed inside the screening box, and a dredging component is also included for dredging the screen, the dredging component is installed on the lower side of the screen; a driving mechanism is used to drive the dredging component to move; the present invention can push out the asphalt concrete stones blocked in the screen holes of the screen by installing the dredging component and the driving mechanism, so as to achieve the purpose of dredging the screen, and will neither cause the stones to be further stuck in the screen holes of the screen nor cause the screen holes of the screen to deform.

Description

Technical Field

[0001] The invention relates to the technical field of material screening, in particular to a screening device for asphalt concrete recycled materials. Background Art

[0002] The recycling of old asphalt concrete pavements that need to be renovated or abandoned is divided into several steps: excavation, recycling, crushing and screening. By recycling waste asphalt concrete, old asphalt mixtures can be fully utilized, reducing the demand for new raw materials, thereby reducing energy consumption and environmental pollution.

[0003] The existing Chinese patent CN216800566U discloses a device for mixing and screening old asphalt pavement materials. By installing a scraping mechanism, the scraping strips in the scraping mechanism can move on the surface of the inclined screen mesh, and scrape the surface of the screen mesh during the movement to scrape out the asphalt concrete stones stuck in the mesh of the screen mesh. However, during the use of the above device, the scraping strips will exert pressure on the asphalt concrete stones stuck in the screen mesh during the movement of the screen mesh, which will not only scrape the asphalt concrete stones out of the mesh of the screen mesh, but also may cause the asphalt concrete stones stuck in the screen mesh to be pressed through the screen mesh, causing the mesh of the screen mesh to deform, or causing the asphalt concrete stones to be further stuck in the screen mesh, resulting in increased difficulty in cleaning the screen mesh later. Summary of the invention

[0004] The object of the present invention is to provide a screening device for asphalt concrete recycled materials to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A screening device for asphalt concrete recycled materials includes a screening box, a vibrating base is installed at the lower end of the screening box, a plurality of equidistantly distributed screens are installed inside the screening box, and also includes a dredging component for dredging the screens, the dredging component is installed on the lower side of the screens; a driving mechanism for driving the dredging component to move, the driving mechanism is installed on the outer side of the screening box; and a vibration component for driving the screen to vibrate, the vibration component is installed between the dredging component and the screen.

[0007] Preferably, the dredging component includes a bristle brush movably abutting against the lower end surface of the screen, a fixing plate is fixedly installed on the lower end of the bristle brush, a support plate is installed on the lower side of the fixing plate, both ends of the support plate are fixedly connected with connecting rods, the cross-sectional shape of the connecting rod is circular, a limiting straight groove is provided on the screening box corresponding to the connecting rod, and the connecting rod is in sliding contact with the screening box through the limiting straight groove.

[0008] Preferably, a plurality of pins equidistantly distributed are fixedly mounted on the lower end of the fixed plate, and the pins penetrate the support plate, a spring is movably sleeved on the outer side of the pin, and the two ends of the spring are movably abutted against the fixed plate and the support plate respectively, and a baffle is fixedly connected to the lower end of the pin, which is used to prevent the pin from detaching from the support plate, and the diameter of the baffle is larger than the diameter of the pin.

[0009] Preferably, the driving mechanism includes two connecting columns that are movably fitted with the outer wall of the screening box, and the connection between the connecting rod and the connecting column is a fixed connection, a screw is installed on the outer side of the connecting column, a sleeve is threadedly sleeved on the outer side of the screw, a connecting seat is fixedly installed on the side of the connecting column close to the screw, and the sleeve is fixedly embedded in the interior of the connecting seat, and the sleeve and the connecting seat are perpendicular to each other.

[0010] Preferably, a positioning seat is installed on the outer side of the screw near its right end, and the screw is rotatably connected to the positioning seat through a bearing, the connection between the positioning seat and the screening box is a fixed connection, the positioning seat is used to support the end of the screw, the outer sides of the two screws are fixedly sleeved with synchronous wheels, and the synchronous wheels are located on the left side of the screening box, and the outer sides of the two synchronous wheels are cooperated with the installation of synchronous belts, the left end of one of the screws is fixedly connected to a motor, and the motor is fixedly connected to the screening box through a bracket.

[0011] Preferably, two symmetrically distributed connecting plates are fixedly mounted on the lower end of the screen, and the bristle brush is located between the two connecting plates, the bristle brush can pass through the sieve holes of the screen, a plurality of hemispheres 1 distributed at equal distances are fixedly mounted on the lower end of the connecting plate, two symmetrically distributed hemispheres 2 are fixedly mounted on the upper end of the fixed plate, and the bristle brush is located between the two hemispheres 2, and the connection between the hemispheres 2 and the hemisphere 1 is a movable abutment.

[0012] Preferably, the vibration assembly includes an extension seat fixedly mounted on the left side of the support plate, the extension seat is mounted at the center of the left side of the support plate, a support tube is fixedly mounted on the upper end of the extension seat, a push rod is movably embedded in the upper end of the support tube, a gasket is fixedly connected to the lower end of the push rod corresponding to the interior of the support tube, a side of the gasket away from the push rod is movably abutted against a spring 2, and an end of the spring 2 away from the gasket is movably abutted against the support tube.

[0013] Preferably, a hemispherical portion is provided at one end of the push rod away from the gasket, a reinforcing rod is installed on the upper side of the push rod, and the reinforcing rod and the screen are connected in a fixed manner, the reinforcing rod is used to enhance the strength of the screen, a plurality of grooves distributed at equal distances are provided on a side of the reinforcing rod close to the push rod, and the hemispherical portion is in sliding contact with the reinforcing rod through the plurality of grooves.

[0014] Preferably, spray pipes are fixedly installed on the outside of the screening box corresponding to its multiple discharge ports, and spray water mist is sprayed out by the spray pipes for dust reduction. A material blocking assembly for sealing the limiting straight groove is installed on the outside of the connecting rod corresponding to the screen and the connecting column, and the material blocking assembly is installed on the inner wall of the screening box. The material blocking assembly includes two baffles installed on the outside of the connecting rod and symmetrically distributed, and the two baffles are fixedly connected with a pad at one end away from each other.

[0015] Preferably, a sleeve box is movably sleeved on the outer side of the pad, and the connection between the sleeve box and the screening box is a fixed connection, and the connection between the baffle plate and the sleeve box is a plug-in connection, and an airbag is movably abutted against the side of the pad away from the baffle, and the airbag is located inside the sleeve box, and the volume of the airbag is smaller than the internal volume of the sleeve box, and the left ends of the two baffles are provided with beveled edges, and the two beveled edges are symmetrically distributed, and the connecting rod is in sliding contact with the baffle through the beveled edges.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention installs a dredging component and a driving mechanism. The screw in the driving mechanism rotates to drive the connecting column and multiple bristle brushes to move. Hemisphere 2 slides with multiple hemispheres 1 along with the bristle brush during movement. Driven by the compression force of spring 1, the bristle brush can move back and forth up and down in the process of moving in contact with the bottom of the screen. The bristle brush can pass through the sieve holes of the screen when moving back and forth up and down, thereby pushing out the asphalt concrete stones blocked in the sieve holes of the screen, thereby achieving the purpose of dredging the screen, without causing the stones to be further stuck in the sieve holes of the screen, and without causing the sieve holes of the screen to deform.

[0018] 2. The present invention installs a vibration component. When the top rod in the vibration component moves with the support plate, its hemispherical part slides in contact with the reinforcing rod through a plurality of grooves distributed at equal distances, which can make the screen vibrate continuously, thereby facilitating the rapid discharge of asphalt concrete stones pushed out from the screen holes of the screen.

[0019] 3. The present invention installs a material blocking assembly in which two baffles are movably opposed to block the limiting straight groove, so that in the process of the screening box vibrating and screening asphalt concrete stones, it can prevent the asphalt concrete stones from jumping out of the limiting straight groove and accidentally injuring people, and can also prevent asphalt dust from spreading from the inside of the screening box through the limiting straight groove, thereby preventing the asphalt dust from being inhaled by the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the present invention;

[0021] Figure 2 It is a side cross-sectional schematic diagram of the screening box of the present invention;

[0022] Figure 3 For the present invention Figure 2 The enlarged schematic diagram of point A in the middle;

[0023] Figure 4 It is a schematic diagram of the overall internal structure of the screening box of the present invention;

[0024] Figure 5 It is a schematic diagram of the connection between the dredging component and the driving mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the disassembly of the dredging component and the material blocking component of the present invention;

[0026] Figure 7 It is a side view of the connection between the dredging component and the driving mechanism of the present invention;

[0027] Figure 8 It is a schematic diagram of the disassembly of the bottom side dredging component of the screen of the present invention.

[0028] In the figure: 1. screening box; 2. vibrating base; 3. screen; 4. bristle brush; 5. fixing plate; 6. supporting plate; 7. connecting rod; 8. pin rod; 9. spring 1; 10. baffle; 11. connecting column; 12. screw; 13. sleeve; 14. connecting seat; 15. positioning seat; 16. synchronous wheel; 17. synchronous belt; 18. motor; 19. connecting plate; 20. hemisphere 1; 21. hemisphere 2; 22. extension seat; 23. supporting tube; 24. push rod; 25. gasket; 26. spring 2; 27. hemisphere; 28. reinforcing rod; 29. ​​groove; 30. baffle; 31. pad; 32. sleeve; 33. air bag; 34. bevel portion; 35. limit straight groove; 36. spray pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1-Figure 4 , Figure 5 , Figure 8 The screening device for asphalt concrete recycled materials shown in the figure includes a screening box 1, a vibrating base 2 is installed at the lower end of the screening box 1, a plurality of equidistantly distributed screens 3 are installed inside the screening box 1, and also includes a dredging component for dredging the screens 3, the dredging component is installed on the lower side of the screen 3; a driving mechanism for driving the dredging component to move, the driving mechanism is installed on the outer side of the screening box 1; a vibration component for driving the screen 3 to vibrate, the vibration component is installed between the dredging component and the screen 3.

[0031] The dredging component includes a bristle brush 4 which is movably abutted against the lower end surface of the screen 3, a fixing plate 5 is fixedly installed on the lower end of the bristle brush 4, a support plate 6 is installed on the lower side of the fixing plate 5, both ends of the support plate 6 are fixedly connected with connecting rods 7, the cross-sectional shape of the connecting rod 7 is circular, a limiting straight groove 35 is provided on the screening box 1 corresponding to the connecting rod 7, and the connecting rod 7 is in sliding contact with the screening box 1 through the limiting straight groove 35.

[0032] A plurality of pins 8 equidistantly distributed are fixedly mounted on the lower end of the fixed plate 5, and the pins 8 penetrate the support plate 6. A spring 9 is movably sleeved on the outer side of the pins 8, and the two ends of the spring 9 are movably abutted against the fixed plate 5 and the support plate 6 respectively. A baffle 10 is fixedly connected to the lower end of the pins 8, and the baffle 10 is used to prevent the pins 8 from detaching from the support plate 6, and the diameter of the baffle 10 is larger than the diameter of the pins 8.

[0033] The driving mechanism includes two connecting columns 11 that are movably fitted with the outer wall of the screening box 1, and the connection between the connecting rod 7 and the connecting column 11 is a fixed connection. A screw 12 is installed on the outer side of the connecting column 11, and a sleeve 13 is threadedly sleeved on the outer side of the screw 12. A connecting seat 14 is fixedly installed on the side of the connecting column 11 close to the screw 12, and the sleeve 13 is fixedly embedded in the inside of the connecting seat 14, and the sleeve 13 and the connecting seat 14 are perpendicular to each other.

[0034] A positioning seat 15 is installed on the outer side of the screw 12 near its right end, and the screw 12 is rotatably connected to the positioning seat 15 through a bearing. The connection between the positioning seat 15 and the screening box 1 is a fixed connection. The positioning seat 15 is used to support the end of the screw 12. The outer sides of the two screws 12 are fixedly sleeved with synchronous wheels 16, and the synchronous wheels 16 are located on the left side of the screening box 1. The outer sides of the two synchronous wheels 16 are cooperated with the installation of synchronous belts 17. The left end of one of the screws 12 is fixedly connected to a motor 18, and the motor 18 is fixedly connected to the screening box 1 through a bracket.

[0035] Two symmetrically distributed connecting plates 19 are fixedly installed at the lower end of the screen 3, and the bristle brush 4 is located between the two connecting plates 19. The bristle brush 4 can pass through the sieve holes of the screen 3. A plurality of equally distributed hemispheres 20 are fixedly installed at the lower end of the connecting plate 19. Two symmetrically distributed hemispheres 21 are fixedly installed at the upper end of the fixed plate 5, and the bristle brush 4 is located between the two hemispheres 21. The connection between the hemisphere 21 and the hemisphere 1 20 is a movable abutment.

[0036] Working principle: When the screening box 1 is screening the asphalt concrete stone, the vibrating base 2 drives the screening box 1 to generate continuous vibration, which is conducive to the rapid screening of the asphalt concrete stone by multiple screens 3 with different mesh sizes; when it is necessary to dredge the mesh of the screen 3 inside the screening box 1, the personnel controls the motor 18 to run, and the motor 18 drives the screw 12 to rotate. During the rotation of the screw 12, the connecting column 11 and multiple bristle brushes 4 are driven to move through the sleeve 13. During the movement of the hemispherical body 21 with the bristle brush 4, it slides and contacts with multiple hemispherical bodies 20 distributed at equal distances. When the hemispherical body 2 After the highest point of 21 touches the lowest point of hemisphere 1 20, the position of bristle brush 4 is at the lowest point. In the process of hemisphere 21 continuing to move away from one hemisphere 1 20, bristle brush 4 will move upward and penetrate the sieve holes of screen 3 under the drive of compression elastic force of spring 1 9, and reciprocate in this way, so that bristle brush 4 can reciprocate up and down in the process of moving left and right, so as to push out asphalt concrete stones blocked in the sieve holes of screen 3 from bottom to top, so as to achieve the purpose of unblocking screen 3, which will neither cause stones to be further stuck in the sieve holes of screen 3 nor cause the sieve holes of screen 3 to deform;

[0037] After the bristle brush 4 moves to the rightmost side, the motor 18 drives the screw 12 to rotate in the reverse direction, driving the bristle brush 4 to move back and reset.

[0038] Example 2: Please refer to Figure 2 , Figure 3This embodiment further explains the first embodiment, the vibration assembly includes an extension seat 22 fixedly mounted on the left side of the support plate 6, the extension seat 22 is installed at the center of the left side of the support plate 6, a support tube 23 is fixedly mounted on the upper end of the extension seat 22, a push rod 24 is movably embedded in the upper end of the support tube 23, a gasket 25 is fixedly connected to the lower end of the push rod 24 corresponding to the inside of the support tube 23, a spring 26 is movably abutted on the side of the gasket 25 away from the push rod 24, and an end of the spring 26 away from the gasket 25 is movably abutted on the support tube 23.

[0039] A hemispherical portion 27 is provided at one end of the top rod 24 away from the gasket 25, a reinforcing rod 28 is installed on the upper side of the top rod 24, and the connection between the reinforcing rod 28 and the screen 3 is a fixed connection. The reinforcing rod 28 is used to enhance the strength of the screen 3. A plurality of grooves 29 distributed at equal distances are provided on one side of the reinforcing rod 28 close to the top rod 24, and the hemispherical portion 27 is in sliding contact with the reinforcing rod 28 through the plurality of grooves 29.

[0040] In this embodiment: during the reciprocating movement of the push rod 24 with the dredging component, since the initial position of the hemispherical portion 27 of the push rod 24 is located in the groove 29, when the push rod 24 is moving, its hemispherical portion 27 will be blocked by the solid part of the reinforcing rod 28 and move downward, and when the hemispherical portion 27 moves to the next groove 29, the push rod 24 will move upward and reset to hit the reinforcing rod 28 under the drive of the compression elastic force of the spring 26. Therefore, during the sliding contact between the push rod 24 and the reinforcing rod 28 through the hemispherical portion 27 and a plurality of equidistantly distributed grooves 29, the screen 3 can be caused to vibrate continuously, which is beneficial to the rapid discharge of the asphalt concrete stones ejected from the sieve holes of the screen 3.

[0041] Example 3: Please refer to Figure 6 , Figure 7 This embodiment further explains Example 2. Spray pipes 36 are fixedly installed on the outside of the screening box 1 corresponding to its multiple discharge ports. The spray pipes 36 spray water mist for dust reduction. A material blocking assembly for blocking the limiting straight groove 35 is installed between the screen 3 and the connecting column 11 on the outside of the connecting rod 7, and the material blocking assembly is installed on the inner wall of the screening box 1. The material blocking assembly includes two baffles 30 installed on the outside of the connecting rod 7 and symmetrically distributed. The two baffles 30 are fixedly connected with a pad 31 at one end away from each other.

[0042] The outer side of the pad 31 is movably sleeved with a sleeve box 32, and the connection between the sleeve box 32 and the screening box 1 is a fixed connection, and the connection between the baffle 30 and the sleeve box 32 is a plug-in connection. The side of the pad 31 away from the baffle 30 is movably abutted with an airbag 33, and the airbag 33 is located inside the sleeve box 32, and the volume of the airbag 33 is smaller than the internal volume of the sleeve box 32. The left ends of the two baffles 30 are both provided with beveled edges 34, and the two beveled edges 34 are symmetrically distributed, and the connecting rod 7 is in sliding contact with the baffle 30 through the beveled edges 34.

[0043] In this embodiment, when the bristle brush 4 and the connecting rod 7 start to move, since the cross-sectional shape of the connecting rod 7 is circular, the connecting rod 7 can pass through the oblique edge portions 34 of the two baffles 30 and squeeze into between the two baffles 30, so that the two baffles 30 move away from each other. At this time, the airbag 33 inside the sleeve 32 is in a compressed and deformed state. When the bristle brush 4 and the connecting rod 7 are moved back and reset, the connecting rod 7 will be separated from the two baffles 30. After the connecting rod 7 is separated from the two baffles 30, the airbag 33 in the sleeve 32 will recover under its own resilience, driving the baffle 30 to extend from the sleeve 32 until the two baffles are separated. The plates 30 are movable against each other, and the two baffles 30 can block the limiting straight groove 35 of the connecting rod 7 after being movable against each other, so that in the process of the screening box 1 screening the asphalt concrete stones, when the screening box 1 vibrates to screen the asphalt concrete stones, it can prevent the asphalt concrete stones from jumping out through the limiting straight groove 35 and accidentally injuring people, and prevent asphalt dust from spreading from the inside of the screening box 1 through the limiting straight groove 35. In conjunction with the spray tube 36, water mist is sprayed at each discharge port of the screening box 1 to absorb asphalt dust, which can effectively prevent the asphalt dust from being inhaled by the human body during the screening process.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device for recycled asphalt concrete material, comprising a screening box (1), a vibrating base (2) being installed at the lower end of the screening box (1), a plurality of equidistantly distributed screens (3) being installed inside the screening box (1), characterized in that: Also includes: A dredging component, used for dredging the screen (3), the dredging component being installed on the lower side of the screen (3); A driving mechanism, used for driving the dredging assembly to move, the driving mechanism being mounted on the outside of the screening box (1); A vibration component, used for driving the screen (3) to generate vibration, the vibration component being installed between the dredging component and the screen (3); The dredging assembly comprises a bristle brush (4) movably abutting against the lower end surface of the screen (3); a fixing plate (5) is fixedly mounted on the lower end of the bristle brush (4); a support plate (6) is mounted on the lower side of the fixing plate (5); both ends of the support plate (6) are fixedly connected to connecting rods (7); a limiting straight groove (35) is provided on the screening box (1) at a position corresponding to the connecting rod (7); and the connecting rod (7) is in sliding contact with the screening box (1) through the limiting straight groove (35); The vibration assembly comprises an extension seat (22) fixedly mounted on the left side of the support plate (6), a support tube (23) being fixedly mounted on the upper end of the extension seat (22), a push rod (24) being movably embedded in the upper end of the support tube (23), a gasket (25) being fixedly connected to the lower end of the push rod (24) corresponding to the interior of the support tube (23), a side of the gasket (25) away from the push rod (24) being movably abutted against a second spring (26), and an end of the second spring (26) away from the gasket (25) being movably abutted against the support tube (23); A plurality of pins (8) are fixedly mounted at the lower end of the fixed plate (5) and are distributed at equal distances, and the pins (8) penetrate the support plate (6); a spring (9) is movably sleeved on the outer side of the pins (8), and two ends of the spring (9) are movably abutted against the fixed plate (5) and the support plate (6) respectively; a baffle (10) is fixedly connected to the lower end of the pins (8), and the diameter of the baffle (10) is greater than the diameter of the pins (8); The lower end of the screen (3) is fixedly mounted with two symmetrically distributed connecting plates (19), and the bristle brush (4) is located between the two connecting plates (19). The lower end of the connecting plate (19) is fixedly mounted with a plurality of equally distributed hemispherical bodies (20). The upper end of the fixed plate (5) is fixedly mounted with two symmetrically distributed hemispherical bodies (21), and the bristle brush (4) is located between the two hemispherical bodies (21). The connection between the hemispherical bodies (21) and the hemispherical bodies (20) is a movable abutment. The driving mechanism comprises two connecting columns (11) movably fitted with the outer wall of the screening box (1), and the connection between the connecting rod (7) and the connecting column (11) is a fixed connection, a screw (12) is installed on the outer side of the connecting column (11), a sleeve (13) is threadedly sleeved on the outer side of the screw (12), a connecting seat (14) is fixedly installed on the side of the connecting column (11) close to the screw (12), and the sleeve (13) is fixedly embedded in the interior of the connecting seat (14); A positioning seat (15) is installed on the outer side of the screw rod (12) near its right end, and the screw rod (12) is rotatably connected to the positioning seat (15) via a bearing, and the connection between the positioning seat (15) and the screening box (1) is a fixed connection; A hemispherical portion (27) is provided at one end of the push rod (24) away from the gasket (25); a reinforcing rod (28) is installed on the upper side of the push rod (24); the reinforcing rod (28) and the screen (3) are connected in a fixed manner; a plurality of grooves (29) distributed at equal distances are provided on a side of the reinforcing rod (28) close to the push rod (24); and the hemispherical portion (27) is in sliding contact with the reinforcing rod (28) via the plurality of grooves (29); A material blocking assembly for blocking the limiting straight groove (35) is installed between the outer side of the connecting rod (7) and the corresponding screen (3) and the connecting column (11), and the material blocking assembly is installed on the inner wall of the screening box (1). The material blocking assembly includes two baffles (30) installed on the outer side of the connecting rod (7) and symmetrically distributed, and the two baffles (30) are fixedly connected to a pad (31) at one end away from each other; The outer side of the backing plate (31) is movably sleeved with a sleeve box (32), and the sleeve box (32) and the screening box (1) are connected in a fixed manner, and the baffle plate (30) and the sleeve box (32) are connected in a plug-in manner, and the side of the backing plate (31) away from the baffle plate (30) is movably abutted with an air bag (33), and the air bag (33) is located inside the sleeve box (32), and the left ends of the two baffle plates (30) are both provided with a bevel portion (34), and the two bevel portions (34) are symmetrically distributed, and the connecting rod (7) is in sliding contact with the baffle plate (30) through the bevel portion (34).

2. The screening device for asphalt concrete recycled material according to claim 1, characterized in that: The outer sides of the two screw rods (12) are fixedly sleeved with a synchronous wheel (16), and the synchronous wheel (16) is located on the left side of the screening box (1). The outer sides of the two synchronous wheels (16) are matched with a synchronous belt (17). The left end of one of the screw rods (12) is fixedly connected to a motor (18), and the motor (18) is fixedly connected to the screening box (1) via a bracket.

3. The screening device for recycled asphalt concrete according to claim 1, characterized in that: Spray pipes (36) are fixedly mounted on the outer side of the screening box (1) at locations corresponding to the multiple discharge ports thereof.

Images