An asphalt concrete waste recycling device and its usage method

Abstract

The present invention relates to the technical field of asphalt concrete waste recycling, and specifically relates to an asphalt concrete waste recycling device and its use method, including a purification component. A partition component is provided at the bottom of the purification component, a swing component is provided at the bottom of the partition component, and a screening component is provided at the bottom of the swing component. The partition component includes a support frame. The present invention can finely screen and classify concrete waste for collection, effectively improving the screening efficiency and screening effect, enabling the recycled waste to be adaptively used according to the particle size of the waste, effectively preventing dust from spreading during the recycling process, and the dust-proof component can be adaptively adjusted according to the usage situation to avoid a reduction in the dust-proof effect. In addition, it can effectively prevent small particles from clogging the screening components with smaller screen holes and large-volume particles from clogging the screening components with larger screen holes, avoiding affecting the waste screening effect and the waste recycling process.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt concrete waste recycling, and specifically to an asphalt concrete waste recycling device and its usage method. Background Art

[0002] Asphalt concrete is a commonly used road surface material. After being used as a road surface material for a certain number of years, it is necessary to use a recycling device to recycle and reuse asphalt concrete waste.

[0003] The invention patent with the application number 200910206288.7 discloses an old asphalt concrete recycling device, which includes a paving conveyor, a separation and recycling mechanism, a new asphalt oil tank, a mixture conveying device, and a hot material bin. The paving conveyor is used to convey old asphalt concrete to the separation and recycling mechanism, the separation and recycling mechanism is used to separate and recycle the concrete and asphalt in the old asphalt concrete, and the mixture conveying device is used to convey the prepared asphalt concrete mixture to the hot material bin for storage. However, it cannot subdivide and classify the collection of concrete waste, so that the waste cannot be adaptively used according to the particle size of the waste, and the screening efficiency is low and the screening effect is poor.

[0004] Moreover, dust is easily generated during the process of waste treatment, which reduces the surrounding environmental quality and endangers the health of users. In addition, the dust-proof component cannot be adaptively adjusted according to the usage situation, resulting in a reduction in the dust-proof effect. In addition, the fine particles in the waste are likely to block the screening components with smaller sieve holes, and the large-volume particles in the waste are likely to get stuck in the screening components with larger sieve holes, causing blockage of the screening components, thereby affecting the waste screening effect and the normal recycling process of the waste. Therefore, a device is needed to solve the above problems. Summary of the Invention

[0005] Aiming at the problems in the prior art, the present invention provides an asphalt concrete waste recycling device and its usage method, which can finely screen and classify the collection of concrete waste, effectively improve the screening efficiency and screening effect, and enable the recycled waste to be adaptively used according to the particle size of the waste. Moreover, during the recycling process, dust is effectively prevented from spreading out, and the dust-proof component can be adaptively adjusted according to the usage situation to avoid a reduction in the dust-proof effect. In addition, it can effectively prevent fine particles from blocking the screening components with smaller sieve holes and large-volume particles from blocking the screening components with larger sieve holes, avoiding affecting the waste screening effect and the waste recycling process.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an asphalt concrete waste recycling device, including a purification component, a partition component is provided at the bottom of the purification component, a swing component is provided at the bottom of the partition component, and a screening component is provided at the bottom of the swing component;

[0007] The partition component includes a support frame. A dust cover is provided at the bottom of the support frame, and first electric push rods are symmetrically arranged on both sides of the bottom of the support frame;

[0008] The swing component includes a screening frame. Pin columns are symmetrically arranged in the middle of both sides of the screening frame. Swing gear discs are fixedly sleeved on both of the pin columns on both sides. Fixed frames are symmetrically arranged on both sides of the screening frame. Rotating shafts are rotatably connected to positions on the sides of the fixed frames on both sides of the swing gear discs. First belt pulleys are fixedly sleeved on both of the rotating shafts on both sides. Driving gears are fixedly sleeved on the rotating shafts;

[0009] A protruding discharge groove is provided at the bottom of the side of the screening frame. A sealing plate is slidably fitted through the top of the discharge groove. A second electric push rod is provided on the top of the discharge groove through a mounting frame. A bottom plate is fixedly installed at the bottom end of the screening frame. Support frames are provided at both ends of the bottom plate;

[0010] The screening component includes a frame. A driving rod is rotatably connected through one end of the frame away from the support frame. Winding wheels are uniformly fixedly sleeved on the driving rod. A first screening plate and a second screening plate are respectively slidably connected to the upper and lower sides of the support frame, and traction ropes are provided on the winding wheels on the upper and lower sides;

[0011] The purification component includes a drainage box. Air blowers are provided at the outer bottoms of both sides of the drainage box. Flow guide pipes are symmetrically arranged at the bottom of the opposite sides of both sides of the drainage box.

[0012] Preferably, the top of the support frame is of a cross structure. Mounting holes are symmetrically opened on both sides of the support frame. The dust cover is made of rubber. Fixing holes are uniformly opened on the top surface of the dust cover. The bottom end of the flow guide pipe is fixedly connected to the fixing hole. The telescopic end of the first electric push rod is movably connected to the bottom of the dust cover.

[0013] Preferably, the pin columns on both sides are respectively rotatably connected to the brackets on both sides of the bottom of the support frame. A rotating rod is rotatably connected between one ends of the fixed frames on both sides. Second belt pulleys are symmetrically fixedly sleeved on both sides of the rotating rod. The first belt pulleys on the same side are driven and connected through a first synchronous belt. The first belt pulley on the side close to the rotating rod and the second belt pulley are driven and connected through a second synchronous belt.

[0014] Preferably, the bottom telescopic end of the second electric push rod is fixedly connected to the top of the sealing plate. A fixing plate is provided between the other ends of the fixed frames on both sides. A first motor is provided on the side of the fixed frame. The output shaft of the first motor is fixedly connected to the end of one of the rotating shafts.

[0015] Preferably, there are two sets of the frames symmetrically arranged up and down. Each set has two frames. The two sets of frames are respectively arranged on the upper and lower sides of the support frame, and the two frames in each set are symmetrically arranged at both ends of the support frame. A second motor is provided on one side of each frame through a frame. The output shaft of the second motor is fixedly connected to the end of the driving rod.

[0016] Preferably, the opposite ends of the two traction ropes on the upper side are respectively fixedly connected to both ends of the first screening plate. The opposite ends of the two traction ropes on the lower side are respectively fixedly connected to both ends of the second screening plate. The diameter of the sieve holes on the first screening plate is smaller than the diameter of the sieve holes on the second screening plate. Both the first screening plate and the second screening plate correspond to the bottom opening of the screening frame. A chute adapted to the first screening plate and the second screening plate is opened on the inner bottom side of the support frame.

[0017] Preferably, the drainage boxes are symmetrically arranged on both sides of the support frame. A cross plate is arranged between the two drainage boxes on both sides. A sealing plug is arranged in the top opening of the drainage box. An installation vertical plate is arranged on the outside of the drainage box.

[0018] Preferably, distance sensors are arranged on both sides of the bottom of the dust-proof cover, and the distance sensors are on the same side as the first electric push rod. A gas flow rate sensor is arranged on the top of the dust-proof cover.

[0019] Preferably, the two driving gears on the same side are both meshed with the swing gear disk on the same side. The screening frame is arranged at the bottom of the dust-proof cover, and the upper and lower ends of the screening frame are transparent.

[0020] A use method of an asphalt concrete waste recycling device includes the following steps:

[0021] S1. First, pour the waste into the inside of the screening frame. At the same time, start the first electric push rod to extend downward, unfold the folded dust-proof cover downward, make the bottom surface of the dust-proof cover fit with the top surface of the screening frame, and start the fan to discharge outward, so that the inside of the drainage box is in a negative pressure state to suck in the dust;

[0022] S2. Secondly, use the swing assembly to drive the screening frame to swing back and forth around the pin through the meshing transmission of the driving gears on both sides and the swing gear disk in the middle, so as to realize the screening of the materials in the screening frame;

[0023] S3. Then, use the screening assembly. First, use the winding wheels at the upper side ends to pull the first screening plate in the support frame to the position corresponding to the screening frame through the traction rope, and then drive the first screening plate to move back and forth through the traction rope by the forward and reverse rotation of the upper winding wheel to screen the materials;

[0024] S4. Then, use the winding wheels at both lower ends to tow the second screening plate located inside the support frame to a position corresponding to the screening frame through the towing ropes. Then, drive the second screening plate to reciprocate through the positive and reverse rotation of the bottom winding wheel via the towing ropes to screen the materials.

[0025] S5. Finally, after screening, contract the second electric push rod to drive the sealing plate to rise, open the discharge chute, and use the swinging assembly to make the screening frame swing greatly, and discharge the large particle waste residues in the screening frame from the discharge chute.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention can use the cooperation among the second motors, winding wheels, and towing ropes on both upper sides to make the first screening plate reciprocate, and use the cooperation among the second motors, winding wheels, and towing ropes on both lower sides to make the second screening plate reciprocate. Since the diameter of the screening holes of the first screening plate is smaller than that of the second screening plate, two-stage screening of the waste can be realized by using the first screening plate and the second screening plate respectively. At the same time, drive the driving gears on both sides to rotate by the first motor, and use the meshing of the driving gears on both sides with the swinging gear disc to realize the reciprocating swing of the screening frame, so as to further screen the waste and improve the screening efficiency and effect.

[0028] 2. During the screening process of the present invention, the fans at the outer bottoms of the two diversion boxes always exhaust air outwards, making the inside of the diversion boxes in a negative pressure state. Then, the dust generated in the screening frame can be extracted into the diversion boxes through the dust-proof cover via the diversion pipes and discharged into the external collection container by the fans with high-velocity air flow.

[0029] 3. During the process of the screening frame reciprocatingly swinging around the pin column, when the distance sensor on one side detects that the distance between the top surface of the screening frame and the bottom surface of the dust-proof cover increases, the first electric push rod on this side extends downward to drive one side of the dust-proof cover to move downward, so that one side of the dust-proof cover can move downward following the downward-swinging side of the screening frame. At the same time, the first electric push rod on the other side drives the other side of the dust-proof cover to move upward, making the other side of the dust-proof cover move upward following the upward-swinging side of the screening frame. The two sides of the dust-proof cover can move up and down during the reciprocating swing of the screening frame, avoiding the opening of one side of the screening frame and the dust-proof cover from becoming larger and causing dust to disperse, and improving the dust-proof effect.

[0030] 4. When the first screening plate is blocked, the present invention can stop the screening frame from swinging and keep it in a horizontal state, and use the first electric push rods on both sides to drive the bottom of the dust-proof cover to move downward synchronously, so that the bottom surface of the dust-proof cover fits the top surface of the screening frame, allowing the fan to exhaust to the outside, increasing the suction force inside the dust-proof cover, and at the same time making the first screening plate reciprocate and increasing the frequency of the reciprocating movement of the first screening plate. At the same time, start the second electric push rod, so that the second electric push rod drives the sealing plate to reciprocate up and down, thereby causing a large fluctuation in the air flow inside the screening frame, loosening the fine particles blocked on the first screening plate, and sucking out the fine particles by negative pressure to achieve rapid blockage removal.

[0031] 5. When the sieve holes of the second screening plate are blocked by large-volume particles, the present invention can leave a gap between the bottom surface of the dust-proof cover and the top surface of the screening frame, the fan exhausts to the outside, and at the same time use the swinging assembly to make the screening frame swing greatly. During the swinging process of the screening frame, when one side of the screening frame swings upward, it collides with the bottom end of the first electric push rod to generate vibration, loosening the large-volume particles stuck in the sieve holes of the second screening plate, and using the large swing of the screening frame to further loosen the large-volume particles stuck in the sieve holes of the second screening plate and shake out the blocked large-volume particles from the sieve holes to achieve blockage removal of the second screening plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a three-dimensional structure diagram of the present invention;

[0033] Figure 2 is an axonometric structure diagram of the present invention;

[0034] Figure 3 is a structure diagram of the swinging assembly and the baffle assembly of the present invention;

[0035] Figure 4 is a structure diagram of the baffle assembly of the present invention;

[0036] Figure 5 is a structure diagram of the swinging assembly of the present invention;

[0037] Figure 6 is of the present invention Figure 5 magnified structure diagram at A in;

[0038] Figure 7 is a structure diagram of the screening assembly of the present invention;

[0039] Figure 8 is a structure diagram of the purification assembly of the present invention;

[0040] Figure 9 is a structure diagram of the bottom of the purification assembly of the present invention.

[0041] In the figure: 1, purification component; 2, swing component; 3, screening component; 4, partition component; 5, dust cover; 501, distance sensor; 502, gas flow rate sensor; 6, mounting hole; 7, support frame; 8, fixing hole; 9, first electric push rod; 10, first motor; 11, first synchronous belt; 12, first pulley; 13, second synchronous belt; 14, second pulley; 15, driving gear; 16, swing gear disk; 17, screening frame; 18, second electric push rod; 19, fixing frame; 20, fixing plate; 21, sealing plate; 22, bottom plate; 23, support frame; 24, first screening plate; 25, second motor; 26, driving rod; 27, winding wheel; 28, frame; 29, traction rope; 30, second screening plate; 31, cross plate; 32, sealing plug; 33, mounting vertical plate; 34, fan; 35, drainage box; 36, diversion pipe. Detailed implementation mode

[0042] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0043] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of this application described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] Embodiment 1

[0046] As Figures 1-9 shown, this embodiment provides a technical solution, an asphalt concrete waste recycling device, including a purification component 1, a partition component 4 is provided at the bottom of the purification component 1, a swing component 2 is provided at the bottom of the partition component 4, and a screening component 3 is provided at the bottom of the swing component 2.

[0047] The barrier assembly 4 includes a support frame 7, the top of the support frame 7 is a cross structure, the support frame 7 is symmetrically provided with mounting holes 6 at two times, the bottom of the support frame 7 is provided with a dust cover 5, and the top surface of the dust cover 5 is evenly provided with fixing holes 8. Specifically, the dust cover 5 can prevent dust from floating and facilitate dust collection. There is a gap between the bottom surface of the dust cover 5 and the top surface of the screening frame 17.

[0048] The swing assembly 2 includes a screening frame 17, which is arranged at the bottom of the dust cover 5. The upper and lower ends of the screening frame 17 are transparent. Pins are symmetrically arranged in the middle of both sides of the screening frame 17. The pins on both sides are rotatably connected to the brackets on both sides of the bottom of the support frame 7. The pins on both sides are fixedly sleeved with a swing toothed disc 16. Fixed frames 19 are symmetrically arranged on both sides of the screening frame 17. A rotating rod is rotatably connected between one end of the fixed frames 19 on both sides. The second pulley 14 is symmetrically fixedly sleeved on both sides of the rotating rod. The side of the fixed frame 19 is located at both sides of the swing toothed disc 16. The position is rotatably connected with a rotating shaft, and the rotating shaft is fixed A driving gear 15 is sleeved, and the two driving gears 15 on the same side are meshed with the swinging toothed disc 16 on the same side. A fixing plate 20 is provided between the other ends of the fixing frames 19 on both sides, and a first motor 10 is provided on the side of the fixing frame 19. The output shaft of the first motor 10 is fixedly connected to the end of one of the rotating shafts. Specifically, the forward and reverse rotation of the first motor 10 drives the driving gear 15 to rotate forward and reverse through the rotating shaft, and the driving gears 15 on both sides are synchronously meshed with the swinging toothed disc 16 in the middle to realize the reciprocating swing of the screening frame 17 around the pin column, thereby realizing the screening of the material in the screening frame 17.

[0049] A first pulley 12 is fixedly sleeved on the rotating shafts on both sides, and the two first pulleys 12 on the same side are connected by a first synchronous belt 11, and the first pulley 12 and the second pulley 14 close to the rotating rod are connected by a second synchronous belt 13. Specifically, the two first pulleys 12 on the same side are connected by the first synchronous belt 11, so that the two driving gears 15 on the same side can rotate in the same direction, and the transmission connection between the first pulley 12 and the second pulley 14 is connected by the second synchronous belt 13, so that the driving gears 15 located on both sides of the screening frame 17 can rotate synchronously and in the same direction.

[0050] A bottom plate 22 is fixedly installed at the bottom end of the screening frame 17, and support frames 23 are provided at both ends of the bottom plate 22. A protruding discharge groove is provided at the bottom of the side of the screening frame 17, and a sealing plate 21 is slidably fitted through the top of the discharge groove. A second electric push rod 18 is provided on the top of the discharge groove through a mounting frame, and the bottom telescopic end of the second electric push rod 18 is fixedly connected to the top of the sealing plate 21. Specifically, the contraction of the second electric push rod 18 drives the sealing plate 21 to move upward, so that the discharge groove port can be opened, and the material in the screening frame 17 can be discharged.

[0051] The screening assembly 3 includes a frame 28. There are two sets of frames 28 symmetrically arranged up and down, with two in each set. The two sets of frames 28 are respectively arranged on the upper and lower sides of the support frame 23, and the two frames 28 in each set are symmetrically arranged at both ends of the support frame 23. A driving rod 26 is rotatably connected through one end of the frame 28 away from the support frame 23. Winding wheels 27 are evenly and fixedly sleeved on the driving rod 26. A second motor 25 is provided on one side of each frame 28 through a frame. The output shaft of the second motor 25 is fixedly connected to the end of the driving rod 26. A first screening plate 24 and a second screening plate 30 are respectively slidably connected to the upper and lower sides of the support frame 23. Traction ropes 29 are provided on the winding wheels 27 on the upper and lower sides. The opposite ends of the two traction ropes 29 on the upper side are respectively fixedly connected to both ends of the first screening plate 24, and the opposite ends of the two traction ropes 29 on the lower side are respectively fixedly connected to both ends of the second screening plate 30. Specifically, by rotating the second motors 25 on both sides of the upper side in the same direction to drive the rotation of the winding wheels 27 on the upper side, the traction ropes 29 can be alternately wound and unwound by the winding wheels 27 on both sides of the upper side to drive the first screening plate 24 to reciprocate horizontally, and the first screening plate 24 can be used to achieve the primary screening of the material.

[0052] More specifically, by unwinding one of the traction ropes 29 on the lower side and winding the other traction rope 29, the second screening plate 30 can be pulled from the support frame 23 on one side to a position corresponding to the bottom of the screening frame 17. Then, by winding one of the traction ropes 29 on the upper side and unwinding the other traction rope 29, the first screening plate 24 can be received into the support frame 23 on one side. Then, by rotating the second motors 25 on both sides of the lower side in the same direction forward and backward, the second screening plate 30 can be driven to reciprocate horizontally through the winding wheels 27 and the traction ropes 29 to achieve the secondary screening of the material.

[0053] More specifically, during the process of receiving the first screening plate 24 into the support frame 23 on one side, the material remaining on the first screening plate 24 can be pushed and dropped onto the second screening plate 30.

[0054] The diameter of the sieve holes on the first screening plate 24 is smaller than the diameter of the sieve holes on the second screening plate 30. Both the first screening plate 24 and the second screening plate 30 correspond to the bottom opening of the screening frame 17. A chute adapted to the first screening plate 24 and the second screening plate 30 is opened on the inner bottom side of the support frame 23. Specifically, the small-diameter sieve holes opened on the first screening plate 24 can perform primary screening on the material. The fine material screened out is discharged from the bottom of the first screening plate 24, and the large-volume material remaining on the first screening plate 24 falls onto the second screening plate 30, and the second screening plate 30 can be used for secondary screening.

[0055] The purification component 1 includes a drainage box 35, which is symmetrically arranged on both sides of the support frame 7. A cross plate 31 is arranged between the drainage boxes 35 on both sides. A sealing plug 32 is arranged in the top opening of the drainage box 35. A fan 34 is arranged at the outer bottom of each of the drainage boxes 35 on both sides. A flow guide pipe 36 is symmetrically arranged at the bottom of the opposite side of each of the drainage boxes 35 on both sides. The bottom end of the flow guide pipe 36 is fixedly connected to the fixing hole 8. An installation vertical plate 33 is arranged on the outer side of the drainage box 35. Specifically, the fan 34 is used to exhaust air to the outside of the drainage box 35, so that the pressure in the drainage box 35 decreases. Then, the pressure in the dust-proof cover 5 decreases through the flow guide pipe 36. Thus, the dust generated during the screening process can be inhaled into the drainage box 35 through the flow guide pipe 36 and then discharged into the external collection container through the fan 34.

[0056] When the device of this embodiment is in use, first, the device is fixedly installed through the installation hole 6, the fixing plate 20 and the installation vertical plate 33. Then, the second motors 25 on the upper side on both sides rotate in the same direction. The first screening plate 24 is pulled from the support frame 23 on one side to the position corresponding to the bottom of the screening frame 17 through the traction rope 29 and the winding wheel 27 on the upper side. Then, the waste material is poured into the inside of the screening frame 17 from one side of the top of the screening frame 17. The first motor 10 is started. The first motor 10 drives one of the first belt wheels 12 and the driving gear 15 to rotate forward and backward. The rotating first belt wheel 12 drives the other first belt wheel 12 on the same side to rotate synchronously through the first synchronous belt 11. And the rotating first belt wheel 12 drives one of the second belt wheels 14 to rotate through the second synchronous belt 13 and drives the second belt wheel 14 on the other side to rotate through the driving rod 26, realizing the synchronous rotation of the two second belt wheels 14. The other driven second belt wheel 14 can make the driving gears 15 distributed on both sides of the screening frame 17 rotate synchronously forward and backward through the second synchronous belt 13, the first belt wheel 12 and the first synchronous belt 11. Under the action of the meshing of the driving gear 15 and the swinging tooth disc 16, the screening frame 17 swings reciprocally around the pin column. The swinging screening frame 17 makes the waste material inside roll, so that part of the waste material is quickly and fully screened by the first screening plate 24.

[0057] When the waste material inside the screening frame 17 is screened for the specified time by swinging, then the second motors 25 on the upper side on both sides rotate synchronously forward and backward to realize the linear reciprocating motion of the first screening plate 24, further screening the waste material.

[0058] After the screening is completed using the first screening plate 24, first, the second motors 25 on both sides of the bottom drive the winding wheels 27 at both ends of the second screening plate 30 to rotate in the same direction, so that the winding wheels 27 at both ends of the second screening plate 30 respectively wind and unwind the traction ropes 29 at both ends of the second screening plate 30, causing the second screening plate 30 to slide along the support frame 23 into the interior of the screening frame 17. Then, start the second motors 25 on both sides of the upper side, and use the winding wheels 27 and traction ropes 29 on the upper side to pull the first screening plate 24 into the support frame 23 on one side. During this process, the waste residues on the first screening plate 24 are pushed onto the second screening plate 30. Then, make the second motors 25 on both sides of the bottom rotate synchronously forward and backward, and the second screening plate 30 can be driven to reciprocate horizontally through the winding wheels 27 and traction ropes 29 at the bottom. Then, with the help of the swinging assembly 2, the screening frame 17 swings reciprocally, thereby realizing the screening of the waste on the second screening plate 30. After screening by the first screening plate 24 and the second screening plate 30, waste particles of three different particle sizes can be obtained, realizing the classified recycling of waste.

[0059] After screening by the second screening plate 30 for a specified time, there are still some large-particle wastes left on the screening frame 17. At this time, start the second electric push rod 18, lift the sealing plate 21 by the contraction of the second electric push rod 18, open the discharge chute, and make the screening frame 17 swing again, and increase the swing amplitude of the screening frame 17, so that the remaining large-particle wastes in the screening frame 17 are discharged through the discharge chute.

[0060] During the screening process, the fans 34 at the outer bottoms of the two drainage boxes 35 always exhaust air outwards, making the inside of the drainage boxes 35 in a negative pressure state. Then, the dust generated in the screening frame 17 can be extracted into the drainage boxes 35 through the guide pipe 36 and the dust-proof cover 5, and is discharged into the external collection container by the high-velocity air flow of the fans 34.

[0061] Embodiment 2

[0062] As Figures 1-9 shown, based on an asphalt concrete waste recycling device provided in the first embodiment, during the actual use process, especially during the screening of materials by the swinging of the screening frame 17, due to the continuous reciprocating swing of the screening frame 17, while the dust-proof cover 5 always remains in a vertical static state, with the reciprocating swing of the screening frame 17, the opening between one end of the screening frame 17 and one side of the dust-proof cover 5 increases, which will cause more dust to float out, reducing the dust-proof effect. And when screening the waste using the first screening plate 24, fine particles will block the sieve holes of the first screening plate 24. When screening the waste using the second screening plate 30, larger waste particles will get stuck in the sieve holes of the second screening plate 30, resulting in the blockage of the sieve holes. To solve the above problems:

[0063] On both sides of the bottom of the support frame 7, first electric push rods 9 are symmetrically arranged. The telescopic ends of the first electric push rods 9 are movably connected to the bottom of the dust cover 5. Specifically, the dust cover 5 adopts a foldable structure, and the material of the dust cover 5 is rubber. The use of rubber material for the dust cover 5 can make the dust cover 5 have better flexibility. By the downward elongation of the first electric push rod 9, the bottom of the dust cover 5 can be driven to move downward, so that the dust cover 5 can cover above the screening frame 17, and the retraction of the first electric push rod 9 can realize the retraction of the dust cover 5.

[0064] Distance sensors 501 are arranged on both sides of the bottom of the dust cover 5, and the distance sensors 501 are on the same side as the first electric push rods 9. A gas flow rate sensor 502 is arranged on the top of the dust cover 5. Specifically, the distance sensors 501 can be used to detect the distance between the bottom surface of the dust cover 5 and the top surface of the screening frame 17, and the gas flow rate sensor 502 can detect the gas flow rate inside the dust cover 5.

[0065] When the device of this embodiment is in use, the dust cover 5 folded and stored at the bottom of the support frame 7 is pushed downward by starting the first electric push rod 9, so that the dust cover 5 covers above the screening frame 17 and does not fit the top surface of the screening frame 17. During the process that the screening frame 17 swings reciprocally around the pin, the openings on both sides between the top surface of the screening frame 17 and the bottom surface of the dust cover 5 alternately increase and decrease. When a distance sensor 501 on one side detects that the distance between the top surface of the screening frame 17 and the bottom surface of the dust cover 5 increases, it actively judges that the corresponding side of the screening frame 17 swings downward. At this time, the first electric push rod 9 corresponding to this side is started, and the first electric push rod 9 corresponding to this side is elongated downward to drive one side of the dust cover 5 to move downward, so that one side of the dust cover 5 can move downward following the side of the screening frame 17 that swings downward. At the same time, the first electric push rod 9 on the other side contracts to drive the other side of the dust cover 5 to move upward, so that the other side of the dust cover 5 follows the side of the screening frame 17 that swings upward to move upward. Thus, during the process that the screening frame 17 swings reciprocally around the pin, the two sides of the dust cover 5 can move up and down following the reciprocal swings of the two sides of the screening frame 17, thereby avoiding the dust from drifting out due to the increase of the opening on one side of the screening frame 17 and the dust cover 5, and improving the dust prevention effect.

[0066] In addition, during the process of screening waste materials using the first screening plate 24, small waste particles are likely to enter the screening holes on the first screening plate 24, resulting in the blockage of the first screening plate 24 and a decrease in the gas flow rate inside the dust-proof cover 5. At this time, the second screening plate 30 is located inside one of the support frames 23. During this process, when the gas flow rate sensor 502 detects that the gas flow rate inside the dust-proof cover 5 is less than the first threshold set by the gas flow rate sensor 502, it actively determines that the first screening plate 24 is blocked. At this time, the screening frame 17 stops swinging and is in a horizontal state, and at the same time, the first electric push rods 9 on both sides are started. The first electric push rods 9 on both sides are used to drive the bottom of the dust-proof cover 5 to move downward synchronously. When the distance sensor 501 detects that the bottom surface of the dust-proof cover 5 is in contact with the top surface of the screening frame 17, the first electric push rods 9 stop operating. At the same time, the fan 34 continues to exhaust air to the outside of the drainage box 35. Since the bottom surface of the dust-proof cover 5 is in contact with the top surface of the screening frame 17, the air pressure inside the dust-proof cover 5 and the screening frame 17 is further reduced, resulting in an increase in the suction force, and the small particles blocked in the screening holes on the first screening plate 24 can be sucked out. At the same time, the second motors 25 on both sides of the upper side are started to rotate in the same direction and in reverse, causing the first screening plate 24 to move horizontally back and forth, and increasing the frequency of the reciprocating movement of the first screening plate 24. At the same time, the second electric push rod 18 is started, causing the second electric push rod 18 to drive the sealing plate 21 to move up and down reciprocally, intermittently opening and closing the discharge chute, so that the air flow inside the screening frame 17 fluctuates greatly, loosening the small particles blocked on the first screening plate 24, and the small particles can be sucked out by the negative pressure inside the screening frame 17 and the dust-proof cover 5, thus realizing the rapid blockage clearing of the first screening plate 24. When the gas flow rate sensor 502 detects that the gas flow rate inside the dust-proof cover 5 is greater than the first threshold set by the gas flow rate sensor 502, it actively determines that the blockage clearing is completed. The first electric push rods 9 on both sides contract to drive the bottom of the dust-proof cover 5 to move upward, causing the bottom surface of the dust-proof cover 5 to separate from the top surface of the screening frame 17, and restoring the frequency of the reciprocating movement of the first screening plate 24 to normal, and the sealing plate 21 keeps the discharge chute sealed, and the screening operation continues.

[0067] It should be noted that during the normal screening process when the screening holes are not blocked, the bottom surface of the dust-proof cover 5 is not in contact with the top surface of the screening frame 17 to prevent excessive negative pressure between the dust-proof cover 5 and the screening frame 17 from sucking out waste materials with larger particles.

[0068] In addition, during the screening of large-particle waste by the second screening plate 30, since the screen holes of the second screening plate 30 become larger and the volume of the waste particles on the second screening plate 30 is relatively large, the large-volume waste particles are likely to block in the screen holes of the second screening plate 30. During the swinging process of the screening frame 17, the large-volume waste particles will roll back and forth on the large-volume particles blocked in the screen holes of the second screening plate 30, resulting in the jamming of the large-volume particles blocked in the screen holes of the second screening plate 30. Therefore, during the screening of large-particle waste by the second screening plate 30, when the gas flow rate sensor 502 detects that the gas flow rate in the dust-proof cover 5 is less than the second threshold set by the gas flow rate sensor 502, it actively determines that the screen holes of the second screening plate 30 are blocked. At this time, it is difficult to loosen the large-volume particles stuck in the screen holes of the second screening plate 30 by the reciprocating movement of the second screening plate 30. Therefore, when it is detected that the screen holes of the second screening plate 30 are blocked, a gap is left between the bottom surface of the dust-proof cover 5 and the top surface of the screening frame 17, and the blower 34 is used to continuously exhaust to the outside. At the same time, the swinging assembly 2 is used to swing the screening frame 17, and the swinging amplitude is increased. During the swinging process of the screening frame 17, when one side of the screening frame 17 swings upward, it collides with the bottom end of the first electric push rod 9. Thus, when one side of the screening frame 17 swings upward to the highest point, it collides with the bottom end of the first electric push rod 9 to generate vibration, so that the large-volume particles stuck in the screen holes of the second screening plate 30 are loosened. By using the large-amplitude swinging of the screening frame 17, the large-volume particles stuck in the screen holes of the second screening plate 30 are further loosened and the blocked large-volume particles are shaken out of the screen holes, thus realizing the blockage removal of the second screening plate 30. When the gas flow rate sensor 502 detects that the gas flow rate in the dust-proof cover 5 is greater than the second threshold set by the gas flow rate sensor 502, it actively determines that the blockage removal is completed, and the swinging amplitude of the screening frame 17 is restored to normal, and the screening operation continues.

[0069] Example 3

[0070] This embodiment provides a method for using an asphalt concrete waste recycling device, including the following steps:

[0071] S1. First, pour the waste into the interior of the screening frame 17. At the same time, start the first electric push rod 9 to extend downward, unfold the folded dust-proof cover 5 downward, make the bottom surface of the dust-proof cover 5 fit with the top surface of the screening frame 17, and start the blower 34 to exhaust to the outside, so that the inside of the drainage box 35 is in a negative pressure state to suck in dust;

[0072] S2. Secondly, use the swinging assembly 2 to make the screening frame 17 swing reciprocally around the pin column through the meshing transmission of the driving gears 15 on both sides and the swinging gear disk 16 in the middle, so as to realize the screening of the materials in the screening frame 17.

[0073] S3, then, using the screening assembly 3, first use the winding wheels 27 at both ends of the upper side to pull the first screening plate 24 located in the support frame 23 to the position corresponding to the screening frame 17 through the traction rope 29, and then use the forward and reverse rotation of the upper winding wheel 27 to drive the first screening plate 24 to reciprocate through the traction rope 29 to screen the material;

[0074] S4, using the reel wheels 27 at both ends of the lower side to pull the second screening plate 30 located in the support frame 23 to a position corresponding to the screening frame 17 through the traction rope 29, and then using the forward and reverse rotation of the bottom reel wheel 27 to drive the second screening plate 30 to reciprocate through the traction rope 29 to screen the material;

[0075] S5. Finally, after the screening is completed, the sealing plate 21 is lifted by contracting the second electric push rod 18, the discharge chute is opened, and the screening frame 17 is swung greatly by the swing assembly 2 to discharge the large particles of waste remaining in the screening frame 17 from the discharge chute.

[0076] 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 method for using an asphalt concrete waste recycling device, characterized in that The asphalt concrete waste recycling equipment described above includes a purification component. A baffle component is provided at the bottom of the purification component. A swing component is provided at the bottom of the baffle component. A screening component is provided at the bottom of the swing component. The baffle component includes a support frame. A dust-proof cover is provided at the bottom of the support frame. First electric push rods are symmetrically provided on both sides of the bottom of the support frame. The swing component includes a screening frame. Pin columns are symmetrically provided in the middle of both sides of the screening frame. Swing gear discs are fixedly sleeved on both of the pin columns. Fixed frames are symmetrically provided on both sides of the screening frame. Rotating shafts are rotatably connected at positions on the sides of the fixed frames on both sides of the swing gear discs. First belt pulleys are fixedly sleeved on both of the rotating shafts. Driving gears are fixedly sleeved on the rotating shafts. The bottom end of the screening frame is fixedly installed with a bottom plate. Support frames are provided at both ends of the bottom plate. The screening component includes a frame. A driving rod is rotatably connected through one end of the frame away from the support frame. Winding wheels are evenly fixedly sleeved on the driving rod. A first screening plate and a second screening plate are respectively slidably connected to the upper and lower sides of the support frame. Traction ropes are provided on the winding wheels on the upper and lower sides. The purification component includes a drainage box. Air blowers are provided at the outer bottoms of both sides of the drainage box. Flow guide pipes are symmetrically provided at the bottom of the opposite sides of both sides of the drainage box. A protruding discharge groove is provided at the bottom of the side of the screening frame. A sealing plate is slidably fitted through the top of the discharge groove. A second electric push rod is provided on the top of the discharge groove through a mounting frame. Distance sensors are provided on both sides of the bottom of the dust-proof cover. A gas flow rate sensor is provided on the top of the dust-proof cover. The distance sensor is used to detect the distance between the bottom surface of the dust-proof cover and the top surface of the screening frame. The gas flow rate sensor is used to detect the gas flow rate inside the dust-proof cover. The material of the dust-proof cover is rubber. When the screen holes of the second screening plate are blocked by large-volume particles, a gap is left between the bottom surface of the dust-proof cover and the top surface of the screening frame. The air blower exhausts to the outside. At the same time, the swing component is used to swing the screening frame greatly. During the swinging process of the screening frame, when one side of the screening frame swings upward, it collides with the bottom end of the first electric push rod and generates vibrations, so that the large-volume particles stuck in the screen holes of the second screening plate are loosened. And by the large swing of the screening frame, the large-volume particles stuck in the screen holes of the second screening plate are further loosened and the blocked large-volume particles are shaken out of the screen holes, realizing the blockage removal of the second screening plate.

2. A method for using an asphalt concrete waste recycling device according to claim 1, characterized in that, The top of the support frame is a cross structure. Mounting holes are symmetrically opened on both sides of the support frame. Fixing holes are evenly opened on the top surface of the dust-proof cover. The bottom end of the flow guide pipe is fixedly connected to the fixing hole. The telescopic end of the first electric push rod is movably connected to the bottom of the dust-proof cover.

3. The usage method of an asphalt concrete waste recycling device according to claim 1, characterized in that, The two pin columns are respectively rotatably connected to the brackets on both sides of the bottom of the support frame. A rotating rod is rotatably connected between one ends of the two fixed frames. Second belt pulleys are symmetrically fixedly sleeved on both sides of the rotating rod. The two first belt pulleys on the same side are driven and connected by a first synchronous belt. The first belt pulley on the side close to the rotating rod and the second belt pulley are driven and connected by a second synchronous belt.

4. A method for using an asphalt concrete waste recycling device according to claim 1, characterized in that, A fixing plate is provided between the other ends of the two fixed frames. A first motor is provided on the side of the fixed frame. The output shaft of the first motor is fixedly connected to the end of one of the rotating shafts.

5. A method for using an asphalt concrete waste recycling device according to claim 1, characterized in that, There are two sets of frames symmetrically arranged up and down, with two in each set. The two sets of frames are respectively arranged on the upper and lower sides of the support frame, and the two frames in each set are symmetrically arranged at both ends of the support frame. A second motor is provided on one side of each frame through a frame, and the output shaft of the second motor is fixedly connected to the end of the driving rod.

6. A method for using an asphalt concrete waste recycling device according to claim 1, characterized in that, The opposite ends of the two traction ropes on the upper side are respectively fixedly connected to both ends of the first screening plate, and the opposite ends of the two traction ropes on the lower side are respectively fixedly connected to both ends of the second screening plate. The diameter of the sieve holes on the first screening plate is smaller than that of the sieve holes on the second screening plate. Both the first screening plate and the second screening plate correspond to the bottom opening of the screening frame, and a chute adapted to the first screening plate and the second screening plate is provided on the inner bottom side of the support frame.

7. A method for using an asphalt concrete waste recycling device according to claim 1, characterized in that, The drainage boxes are symmetrically arranged on both sides of the support frame. There is a cross plate between the two drainage boxes on both sides. A sealing plug is provided in the top opening of the drainage box, and a mounting vertical plate is provided on the outside of the drainage box.

8. A method for using an asphalt concrete waste recycling device according to claim 1, characterized in that, The distance sensor is on the same side as the first electric push rod.

9. A method for using an asphalt concrete waste recycling device according to claim 1, characterized in that, The two driving gears on the same side are both engaged with the swing gear disc on the same side. The screening frame is arranged at the bottom of the dust-proof cover, and the upper and lower ends of the screening frame are transparent.

10. A method for using an asphalt concrete waste recycling device according to claim 1, characterized in that, It also includes the following steps: S1. First, pour the waste into the interior of the screening frame. At the same time, start the first electric push rod to extend downward, unfold the folded dust-proof cover downward, make the bottom surface of the dust-proof cover fit with the top surface of the screening frame, and start the fan to discharge outward, so that the inside of the drainage box is in a negative pressure state to suck in the dust. S2. Secondly, use the swing assembly to drive the screening frame to swing back and forth around the pin through the meshing transmission of the driving gears on both sides and the swing gear disc in the middle, so as to realize the screening of the materials in the screening frame. S3. Then, use the screening assembly. First, use the take-up wheels at both ends on the upper side to pull the first screening plate located in the support frame to the position corresponding to the screening frame through the traction rope, and then drive the first screening plate to move back and forth through the traction rope by the forward and reverse rotation of the take-up wheel on the upper side to screen the materials. S4. Then, use the take-up wheels at both ends on the lower side to pull the second screening plate located in the support frame to the position corresponding to the screening frame through the traction rope, and then drive the second screening plate to move back and forth through the traction rope by the forward and reverse rotation of the take-up wheel at the bottom to screen the materials. S5. Finally, after screening, drive the sealing plate to rise by the contraction of the second electric push rod, open the discharge chute, and use the swing assembly to make the screening frame swing greatly to discharge the large-particle waste remaining in the screening frame from the discharge chute.

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