Waste asphalt concrete integrated treatment equipment and treatment method thereof

Abstract

The invention discloses waste asphalt concrete integrated treatment equipment and a treatment method thereof. The integrated treatment equipment comprises a screening device, a crushing and shaping device and a graded batching bin which are arranged in a machine shell. The screening device comprises two stages of screening units, the first screening unit screens out asphalt concrete particles in a first particle size range and discharges the asphalt concrete particles to a stage batching bin, and oversize materials are screened by a second screening unit; the second screening unit is used for screening out asphalt concrete particles in a second particle size range and discharging the asphalt concrete particles to a graded batching bin, and oversize materials are crushed by the crushing and shaping device and then screened out to the graded batching bin through a particle size adjustable screen; a discharge port of the secondary batching bin is connected with an asphalt mixing plant; according to the integrated equipment, crushing, screening and grading of asphalt concrete are integrated, the material circulation time is shortened, the environment-friendly requirement can be met by conducting tail end dust removal through the environment-friendly dust removal system arranged on the asphalt mixing plant, the equipment consumption is reduced, the occupied area is reduced, and the equipment and environment-friendly cost input is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of road construction machinery, and in particular to an integrated waste asphalt concrete processing device and a method for processing waste asphalt concrete using the device. The integrated device integrates the crushing, screening and grading of asphalt concrete to achieve the recycling of waste asphalt concrete. Background Art

[0002] Asphalt concrete, commonly known as asphalt concrete, is a mixture made by artificially selecting mineral materials with a certain graded composition (crushed stone or crushed gravel, stone chips or sand, mineral powder, etc.) and a certain proportion of road asphalt materials under strictly controlled conditions.

[0003] The strength of asphalt mixture is mainly manifested in two aspects. One is the bonding force of the binder formed by asphalt and mineral powder; the other is the internal friction and locking force between aggregate particles. The huge surface area of ​​fine mineral powder particles can make asphalt materials form a thin film, thereby improving the bonding strength and temperature stability of asphalt materials; while the locking force is mainly generated between coarse aggregate particles. Therefore, when grading asphalt concrete mineral materials, both should be taken into account so that the mixture can form a dense, stable, rough and durable road surface after adding an appropriate amount of asphalt. There are many ways to match mineral materials. The formula can be used for calculation, or the gradation range can be determined by experience. The gradation range of the empirical curve is currently used in China. The appropriate amount of asphalt in asphalt mixture is determined by laboratory test results and practical conditions on the construction site. At the same time, the reference asphalt dosage range provided in the relevant technical specifications of the industry is used as a guide for trial mixing. When the mineral material variety, gradation range, asphalt consistency and type, mixing facilities, regional climate and traffic characteristics are relatively fixed, empirical formulas can also be used for estimation.

[0004] When producing asphalt concrete, it is necessary to mix sand, gravel, asphalt, stone powder and various additives, and the mixed raw materials are heated and stirred.

[0005] When repairing asphalt roads, the waste asphalt pavement is milled to produce a large amount of asphalt concrete milling materials. In order to recycle and reuse the waste materials, the asphalt concrete milling materials need to be crushed from large-size asphalt concrete to smaller particles without destroying the original asphalt ratio until they can be reused.

[0006] At present, in order to realize the recycling and reuse of waste asphalt concrete, construction units have invested in many equipment, such as asphalt concrete milling material crushing and shaping equipment, screening equipment, asphalt mixing station, and the loading and unloading devices used to lift materials between various equipment. Therefore, in the current waste asphalt concrete recycling and reuse system, the crushing and screening of asphalt concrete milling materials are disconnected from the asphalt mixing system and cannot run at the same time. Each process equipment is independent. During the processing, the asphalt concrete milling material is first crushed by the crushing and shaping equipment, and the crushed small particles are then fed to the screening equipment for screening. Fine particles and coarse particles are screened out by the screening equipment, and then the fine particles and coarse particles of the asphalt concrete are graded, and then the mixing is completed at the asphalt mixing station according to the grading.

[0007] Therefore, in order to achieve the recycling and reuse of waste asphalt concrete, the coordination of various functional equipment is required. Each equipment is independent of each other, occupies a large area and uses a large amount of equipment. The material circulation time between equipment is long, there are many repeated steps, and a large amount of human and material resources are invested, resulting in high costs and low efficiency.

[0008] In addition, each device will cause environmental problems according to its use function, such as noise, dust and other environmental pollution problems generated by crushing and shaping equipment during the crushing process, dust problems generated by screening equipment during the screening process, and smoke pollution during the heating and mixing process of asphalt mixing plants. Therefore, more equipment usage corresponds to more environmental protection measures, and corresponding environmental protection measures need to be set for each device. On this basis, the floor space occupied by each device is further increased, environmental protection investment is further increased, and labor and machinery investment are further increased, making the operation and maintenance of the equipment cumbersome, and it is very easy to destroy the waste asphalt concrete ratio during operation, resulting in a decrease in utilization rate.

[0009] Therefore, it is urgent to propose a new technical solution to solve the problems existing in the prior art. Summary of the invention

[0010] The present application provides an integrated waste asphalt concrete processing device and a processing method thereof, which are used to solve the problems of large equipment usage and high processing cost in existing waste asphalt concrete recycling and processing systems.

[0011] In order to achieve the above objectives, this application provides the following technical solutions:

[0012] On the one hand, the present application provides an integrated waste asphalt concrete processing device, including a casing, in which a screening device, a crushing and shaping device, and a grading material bin are arranged;

[0013] The graded material bin includes a fine particle bin, a coarse particle bin and an adjustable particle size bin. The graded material bin is provided with a discharge port that is compatible with the asphalt mixing plant.

[0014] The screening device is used to receive the asphalt concrete particles loaded thereon, and the screening device includes a first screening unit and a second screening unit, the first screening unit is used to screen out the asphalt concrete particles with a particle size within a first particle size range and discharge them to a fine particle silo, and the first screening unit includes a first screen;

[0015] The second screening unit is used to screen out asphalt concrete particles with a particle size within a second particle size range and discharge them to a coarse particle silo. The oversize material of the first screening unit is screened by the second screening unit, and the oversize material of the second screening unit is discharged to a crushing and shaping device. The second screening unit includes a second screen.

[0016] The crushing and shaping device is used to crush and shape the large-sized asphalt concrete particles fed into it. The crushing and shaping device includes a crushing mechanism, and the crushing mechanism includes a hammer and a breaker. The discharge port of the crushing and shaping device is provided with a third screen. The crushed asphalt concrete particles are screened out through the third screen to the adjustable particle size silo.

[0017] Furthermore, in the above technical scheme, the first screening unit and the second screening unit vibrate and screen the asphalt concrete particles loaded thereon under the drive of the vibrator; the first screening unit is used to screen out the asphalt concrete particles with a particle size range of 0-10mm and discharge them into the fine particle silo; the second screening unit is used to screen out the asphalt concrete particles with a particle size range of 10-20mm and discharge them into the coarse particle silo, and discharge the screened materials with a particle size range of more than 20mm into the crushing and shaping device.

[0018] Furthermore, a feed port, a fine particle discharge port, a coarse particle discharge port and an adjustable particle size discharge port are formed on the casing.

[0019] Furthermore, the asphalt concrete particles to be processed enter the screening device from a feed port, and the feed port is arranged above the first screen.

[0020] Furthermore, the first screen and the second screen are adjacently arranged on the grid, and the first screen and the second screen are detachably connected to the grid; the vibrator drives the grid to vibrate, and a driving mechanism is arranged on the grid, the driving mechanism includes a hydraulic rod, one end of the hydraulic rod is connected to one end of the grid, and the other end of the grid is rotatably connected to the casing, and when the hydraulic rod reciprocates in the hydraulic cylinder, it drives the grid to rotate, tilt or rotate and reset; when the grid is rotated and tilted, the screened material on the second screening unit is fed to the crushing and shaping device, and when the grid is rotated and reset, the vibrator drives the first screen and the second screen to vibrate the screening material.

[0021] Furthermore, the mesh holes on the first sieve have an aperture of 10 mm, a first collecting hopper is provided below the first sieve, and a discharge port of the first collecting hopper is connected to the fine particle silo through a discharge pipe.

[0022] Furthermore, the aperture of the mesh on the second sieve is 20 mm, and a second collecting hopper is arranged below the second sieve, and the discharge port of the second collecting hopper is connected to the coarse particle silo through a discharge pipe.

[0023] Furthermore, a first driving mechanism and a first vibrator are provided on the first screen, and the first driving mechanism is fixed on the casing; the first driving mechanism is used to drive the first screen to rise and fall; the first driving mechanism includes a hydraulic rod, one end of the hydraulic rod is connected to one end of the first screen, and the other end of the first screen is rotatably connected to the casing, and when the hydraulic rod reciprocates in the hydraulic cylinder, it drives the first screen to rotate, tilt or rotate and reset; when the first screen is rotated and tilted, the screened material on the first screen is fed to the second screening unit, and when the first screen is rotated and reset, the first vibrator drives the first screen to vibrate the screened material.

[0024] Furthermore, a second driving mechanism and a second vibrator are provided on the second screen; one end of the second screen is rotatably connected to the casing, and the other end is connected to the second driving mechanism, the second driving mechanism is used to drive the second screen to rise and fall, and the second driving mechanism is fixed on the casing; the second driving mechanism includes a hydraulic rod, one end of which is connected to one end of the second screen, and when the hydraulic rod reciprocates in the hydraulic cylinder, it drives the second screen to rotate, tilt or rotate and reset; when the second screen is rotated and tilted, the screened material on the second screen is fed to the crushing and shaping device; when the second screen is rotated and reset, the second vibrator drives the second screen to vibrate the screened material.

[0025] Furthermore, the crushing and shaping device includes a crushing chamber, in which a hammer crushing main shaft is arranged, on which a plurality of hammer crushing knives are arranged, both ends of the hammer crushing main shaft are rotatably connected to the crushing chamber through bearings, and on the outer wall of the crushing chamber a driving motor for driving the hammer crushing main shaft to rotate is arranged.

[0026] Furthermore, a feed port is provided on the crushing bin, and a feed pipe is provided on the feed port. When the second screen rotates and tilts under the drive of the second driving mechanism, the screened material on the second screen is poured into the feed pipe; a discharge port is also provided on the crushing bin, and a third screen is provided on the discharge port; when the hammer crusher main shaft rotates, the hammer crusher is used to crush the asphalt concrete particles entering the crushing bin, and the material that can be screened out from the mesh of the third screen in the crushing bin is discharged to the adjustable particle size bin through the discharge pipe.

[0027] Furthermore, the discharge port is connected to a discharge pipe, and the outlet end of the discharge pipe is arranged above the adjustable particle size silo.

[0028] Furthermore, a crushing device is provided at the feed inlet of the crushing bin, and the crushing device is used to crush the asphalt concrete entering the crushing bin.

[0029] Furthermore, an adjustment mechanism for adjusting the third screen is provided at the discharge port of the crushing bin.

[0030] Furthermore, a controller is provided on the grading material bin, the fine particle bin is connected to the fine material inlet of the asphalt mixing station through the fine material discharge pipe, the coarse particle bin is connected to the coarse material inlet of the asphalt mixing station through the coarse material discharge pipe, and the adjustable particle size bin is connected to the adjustable particle size inlet of the asphalt mixing station through the adjustable particle size discharge pipe.

[0031] Furthermore, the outlet end of the fine material discharge pipe is provided with a first variable frequency pump, a first solenoid valve and a first flow meter, the outlet end of the coarse material discharge pipe is provided with a second variable frequency pump, a second solenoid valve and a second flow meter; the outlet end of the adjustable particle size discharge pipe is provided with a third variable frequency pump, a third solenoid valve and a third flow meter.

[0032] Furthermore, the first variable frequency pump, the first solenoid valve, the first flow meter, the second variable frequency pump, the second solenoid valve, the second flow meter, the third variable frequency pump, the third solenoid valve and the third flow meter are all connected to the controller signal.

[0033] Furthermore, the first variable frequency pump is used to pump the fine particles in the fine particle silo to the asphalt mixing station, the second variable frequency pump is used to pump the coarse particles in the coarse particle silo to the asphalt mixing station; the third variable frequency pump is used to pump the adjustable particle size in the adjustable particle size silo to the asphalt mixing station.

[0034] Furthermore, the first solenoid valve, the second solenoid valve and the third solenoid valve are respectively used to receive signals from the controller to realize automatic opening and closing.

[0035] Furthermore, the first flow meter is used to detect the discharge flow of the fine material discharge pipe in real time, the second flow meter is used to detect the discharge flow of the coarse material discharge pipe in real time, and the third flow meter is used to detect the discharge flow of the adjustable particle size discharge pipe in real time.

[0036] Furthermore, the controller includes a processing module, a storage module, an information transceiver module and an output control module. The processing module is used to send a control signal through the output control module according to the signals received from the first flow meter, the second flow meter and the third flow meter. The control signal is used to control the action of the first variable frequency pump, the first solenoid valve, the second variable frequency pump, the second solenoid valve, the third variable frequency pump and the third solenoid valve; the storage module stores the target ratio of fine particles, coarse particles and adjustable particle size materials.

[0037] Furthermore, vibration motors are respectively arranged on the silo wall of the fine particle silo, the silo wall of the coarse particle silo, and the silo wall of the adjustable particle size silo.

[0038] On the other hand, based on the above-mentioned integrated waste asphalt concrete processing equipment, the present application also provides a processing method for treating waste asphalt concrete using the equipment, comprising the following steps:

[0039] S1: Loading waste asphalt concrete to the screening device;

[0040] S2: screening out asphalt concrete particles in a first particle size range through a first screening unit of the screening device and discharging them into a fine particle silo of the graded material bin, and screening out asphalt concrete particles in a second particle size range through a second screening unit and discharging them into a coarse particle silo of the graded material bin;

[0041] S3: discharging the oversize material with a particle size larger than the second particle size range to the crushing and shaping device;

[0042] S4: The crushing and shaping device crushes the large-sized asphalt concrete particles into small particles, which are then screened out through the third screen to the adjustable particle size silo of the grading silo;

[0043] S5: According to the target mix ratio, the fine particle silo, the coarse particle silo and the adjustable particle size silo are controlled to quantitatively discharge materials into the asphalt mixing station to obtain asphalt concrete with the target mix ratio.

[0044] Compared with the prior art, this application has the following beneficial effects:

[0045] The present application provides an integrated treatment device for waste asphalt concrete and a treatment method thereof. A screening device, a crushing and shaping device and a graded material bin are arranged in a casing of the integrated treatment device for waste asphalt concrete; the screening device is connected to the crushing and shaping device, and the screening device comprises a first screening unit and a second screening unit, the first screening unit screens out asphalt concrete particles in a first particle size range (0-10mm) and discharges them to a fine particle bin of the graded material bin; the second screening unit screens out asphalt concrete particles in a second particle size range (10-20mm) and discharges them to a coarse particle bin of the graded material bin, and discharges large-size screened materials (with a particle size of more than 20mm) into the crushing and shaping device; the crushing and shaping device crushes and shapes the large-size asphalt concrete fed therein, and the crushed asphalt concrete is screened out through a third screen to an adjustable particle size bin of the graded material bin, and particles with a particle size larger than the mesh size of the third screen continue to be further crushed in the crushing and shaping device; the discharge port of the graded material bin is connected to an asphalt mixing station. The integrated equipment provided by the present application integrates asphalt concrete crushing, screening and grading into one, becoming a supporting equipment for an asphalt mixing station, which can realize the continuous integrated operation of screening and asphalt proportioning without destroying the original asphalt proportioning; the overall structure is integrated, and the material flows while processing, which is carried out simultaneously, shortening the material flow time and eliminating the special material transmission time after the processing of each equipment is completed; during the material processing process, when the material enters the screening device, until it is discharged into the asphalt mixing station through the grading material bin, no material is discharged to the outside during this period, so there is no dust and other pollution, and the environmental protection requirements can be met by performing terminal dust removal through the environmental protection dust removal system installed on the asphalt mixing station; in addition, the present application realizes structural integration, which reduces the equipment usage and the floor space compared with the existing technology, and reduces the cost investment in equipment and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be understood that the specific shapes and structures shown in the drawings should not usually be regarded as limiting conditions for implementing the present application; for example, based on the technical concepts and exemplary drawings disclosed in the present application, those skilled in the art are able to easily make routine adjustments or further optimizations to the increase / decrease / attribution division, specific shapes, positional relationships, connection methods, and dimensional ratios of certain units (components).

[0047] Figure 1 This is a flow chart of the processing principle of the integrated waste asphalt concrete processing equipment provided by the present application in an embodiment, in which the arrows indicate the direction of material flow;

[0048] Figure 2 This is a schematic diagram of the planar structure of the integrated waste asphalt concrete processing equipment provided by the present application in an embodiment, which shows that after the first screen and the second screen are rotated and tilted, the screened material on the screening device is discharged into the crushing bin;

[0049] Figure 3 This is a flow chart of a method for treating waste asphalt concrete using the integrated waste asphalt concrete treatment equipment provided by the present application in an embodiment, wherein arrows in the figure indicate the direction of material flow;

[0050] Figure 4 This is a flow chart of the processing principle of the integrated waste asphalt concrete processing equipment provided by the present application in another embodiment, and the arrows in the figure indicate the direction of material flow.

[0051] Description of reference numerals:

[0052] 1. Screening device; 11. Adjustable particle size discharge port; 12. Feed port; 13. Fine particle discharge port; 14. Coarse particle discharge port; 15. First screen; 16. First drive mechanism; 17. First collection hopper; 18. Second screen; 19. Second drive mechanism; 110. Second collection hopper;

[0053] 2. Grading silo; 21. Fine particle silo; 22. Coarse particle silo; 23. Adjustable particle size silo;

[0054] 3. Crushing and shaping device; 31. Crushing chamber; 32. Hammer breaking spindle; 33. Hammer breaking knife; 34. Third screen;

[0055] 4. Asphalt mixing plant;

[0056] 5. Casing;

[0057] 6. Belt conveyor;

[0058] 7. Outriggers. DETAILED DESCRIPTION

[0059] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0060] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0061] The terms such as "upper", "lower", "left", "right", "middle", etc. used in this application are usually used to facilitate intuitive understanding by comparing with the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product. Without departing from the technical concept disclosed in this application, changes in these relative positional relationships should also be regarded as the scope of this application.

[0062] Embodiment 1

[0063] In order to achieve energy conservation, emission reduction and resource reuse, asphalt concrete milling materials (produced by milling of waste asphalt pavement) or waste asphalt concrete should be recycled and reused. To reuse the recycled asphalt concrete, the large-size asphalt concrete must be crushed into smaller particles, and the original asphalt ratio must not be destroyed.

[0064] Asphalt is currently widely used in road engineering. When asphalt is in contact with air for a long time during the production and use process, a series of physical and chemical changes will occur, such as evaporation, dehydrogenation, oxidation, condensation, etc., which can be collectively referred to as aging. Therefore, the processing time of asphalt recycling should be shortened, and the processing process should be reasonably set to prevent asphalt aging.

[0065] In order to realize the recycling, processing and reuse of waste asphalt concrete, the present application provides an integrated processing equipment for waste asphalt concrete, which replaces the original complex equipment with equipment with simple structure and easy maintenance, reduces the occupied area, and reduces the processing process time, such as the circulation time of materials between various equipment, so that the asphalt concrete milling materials pulled back from the construction site, or discarded asphalt concrete, can be synchronously processed and utilized with the asphalt mixing station operation system, reducing the circulation time used for processing, preventing aging, and maximizing the asphalt content of the waste asphalt concrete.

[0066] The integrated waste asphalt concrete processing equipment provided by the present application mainly includes the following functional modules: screening device 1, crushing and shaping device 3, and grading material bin 2. The above three modules can be installed in the casing to realize the integration of the equipment, and the equipment can be moved as a whole when it is moved. The integrated waste asphalt concrete processing equipment provided by the present application can be equipped with a corresponding feeding device when in use.

[0067] Combine the following Figure 1 The structural principle of the integrated waste asphalt concrete processing equipment provided in this application is described in detail for each functional module.

[0068] 1. Loading device

[0069] The main function of the feeding device is to centrally feed the materials, and sometimes also has the function of temporary storage. The structure of the feeding device is not particularly limited in this application, as long as the materials can be fed to the screening device 1.

[0070] In order to realize the basic feeding function, in this embodiment, the feeding device has at least one feeding hopper, and the discharge port of the feeding hopper is connected to the first screening unit of the screening device 1. The asphalt concrete milling material or the waste asphalt concrete pulled back from the construction site can not only be temporarily stored in the feeding hopper, but also the feeding hopper can feed the screening device 1 while storing.

[0071] Of course, in other embodiments, the loading hopper can be equipped with a vibrator to assist in unloading.

[0072] In other embodiments, the loading device may also be replaced by existing equipment, such as a small forklift, etc., to directly load the materials through the small forklift.

[0073] 2. Screening device

[0074] The function of the screening device 1 is to screen out asphalt concrete particles of different particle sizes to prepare materials for subsequent grading.

[0075] See also Figure 1 , 2 The screening device 1 in the present application is arranged in a casing 5 , and a feed port 12 , a fine particle discharge port 13 , a coarse particle discharge port 14 , and an adjustable particle size discharge port 11 are formed on the casing 5 .

[0076] In the present application, the screening device includes a first screening unit and a second screening unit. The first screening unit is used to screen out asphalt concrete particles with a particle size within a first particle size range (0-10 mm) and discharge them to the fine particle silo of the graded material bin; the second screening unit is used to screen out asphalt concrete particles with a particle size within a second particle size range (10-20 mm) and discharge them to the coarse particle silo of the graded material bin. The screened material of the first screening unit can be screened by the second screening unit, and the screened material of the second screening unit is discharged to the crushing and shaping device for crushing.

[0077] In this embodiment, the first screening unit includes a first screen 15, and the second screening unit includes a second screen 18. The first screen and the second screen can be arranged adjacent to each other on the grid, and the vibrator drives the grid to vibrate. The grid is provided with a driving mechanism, which includes a hydraulic rod, one end of which is connected to one end of the grid, and the other end of the grid is rotatably connected to the casing. When the hydraulic rod reciprocates in the hydraulic cylinder, it drives the grid to rotate and tilt or rotate and reset; when the grid is rotated and tilted, the screened material on the second screening unit is fed to the crushing and shaping device, and when the grid is rotated and reset, the vibrator drives the first and second screens to vibrate and screen the material.

[0078] The above-mentioned screening device is an integrated structure of a vibrating screen, and two adjacently arranged screens with different mesh sizes can screen asphalt concrete particles of different particle sizes.

[0079] A first collecting hopper is arranged below the first screen, and a discharge port of the first collecting hopper is connected to the fine particle silo through a discharge pipe; a second collecting hopper is arranged below the second screen, and a discharge port of the second collecting hopper is connected to the coarse particle silo through a discharge pipe.

[0080] In this embodiment, the first screen and the second screen are replaceable. For example, if the particle size requirement of asphalt concrete particles changes, the requirement can be met by replacing screens with different mesh sizes. For example, the mesh size of the original first screen is 10 mm. Now, due to the change in demand, it can be replaced with a screen of 20 mm, 25 mm, etc., mainly depending on the particle size requirement of the grading fine particles. The screen of the screening device in this application is set to be replaceable, which also facilitates the disassembly and replacement of the screen when it is damaged, and is easy to use and maintain.

[0081] In this embodiment, the first sieve and the second sieve in the screening device can be single-layer sieves or double-layer sieves; if a double-layer sieve is used, the upper layer of the double-layer sieve is a pre-screen, and the mesh size of the upper layer is larger than the mesh size of the lower layer; for example, the mesh size diameter of the upper layer of the double-layer sieve is 50 mm, and the mesh size diameter of the lower layer is 25 mm.

[0082] 3. Crushing and shaping device

[0083] The crushing and shaping device 3 is used to crush and shape the large-sized asphalt concrete fed therein. The crushed asphalt concrete is screened through the third screen 34 set at the discharge port of the crushing and shaping device. The screening after crushing ensures that the particle size of the asphalt concrete particles meets the grading requirements. The third screen 34 is convenient for particle size adjustment. When in use, screens with different apertures can be replaced as needed. In one embodiment, the third screen is set below the crushing and shaping device 3, and the third screen and the discharge port of the crushing and shaping device 3 can be detachably set, so that it can be replaced by manual disassembly; in another embodiment, an adjustment mechanism for adjusting the third screen can be set at the discharge port of the crushing and shaping device 3, and it can be adjusted at any time through the adjustment mechanism, which is more convenient and more efficient than manual disassembly, but the manufacturing cost will also increase accordingly.

[0084] In order to realize equipment integration and reduce the occupied area, the crushing and shaping device 3 in the present application is arranged in the casing 5 of the screening device 1. This also avoids crushing dust and the transmission of crushed material after crushing.

[0085] See also Figure 1 , 2 In the present application, the crushing and shaping device 3 includes a crushing mechanism, which includes a hammer breaker 33. A plurality of hammer breaker knives 33 are arranged on a hammer breaker main shaft 32, and the hammer breaker main shaft 32 is arranged in a crushing chamber 31. Both ends of the hammer breaker main shaft 32 are rotatably connected to the crushing chamber 31 through bearings, and a driving motor for driving the hammer breaker main shaft 32 to rotate is arranged on the outer wall of the crushing chamber 31. A feed port is arranged on the crushing chamber 31, and a feed pipe is arranged on the feed port. The feed pipe is close to the second screen 18. When the second screen 18 rotates and tilts under the drive of the second driving mechanism 19, the screened material on the second screen 18 is poured into the feed pipe.

[0086] The crushing bin 31 is also provided with a discharge port. When the hammer crushing spindle 32 rotates, the hammer crusher 33 is used to crush the asphalt concrete particles entering the crushing bin 31. The discharge port is provided with a third screen 34. The material that can be screened out from the mesh holes of the third screen 34 in the crushing bin 31 is discharged to the adjustable particle size bin 23 through the discharge pipe; the material that cannot be screened out from the mesh holes of the third screen 34 in the crushing bin 31 is continuously hammered in the crushing bin 31.

[0087] In this embodiment, the third screen installed at the discharge port of the crushing and shaping device is adjusted at any time by the adjustment mechanism. For example, under the adjustment action of the adjustment mechanism, the third screen with a mesh diameter of 20 mm is adjusted to a third screen with a mesh diameter of 25 mm.

[0088] In one embodiment, a plurality of hammer knives 33 are spirally arranged on the outer wall of the hammer breaker main shaft 32; specifically, the plurality of hammer knives on the front half of the hammer breaker main shaft 32 are distributed in a positive spiral, and the plurality of hammer knives on the rear half of the hammer breaker main shaft 32 are distributed in a reverse spiral. The third screen is arranged below the hammer breaker main shaft 32. When the hammer knives 33 crush the asphalt concrete particles entering the crushing bin 31, the particles with small particle size are screened out from the third screen, and the particles with large particle size are reciprocated by the hammer knives with the positive spiral distribution and the hammer knives with the reverse spiral distribution to achieve continuous crushing until they are crushed into small particle size particles and screened out from the third screen.

[0089] In another embodiment, the hammer breaker knife 33 is made of wear-resistant material, and a plurality of wear-resistant materials (i.e., a plurality of strip-shaped hammer breaker knives) are distributed at intervals on the hammer breaker main shaft 32. When the driving motor drives the hammer breaker main shaft 32 to rotate, the plurality of wear-resistant materials crush the asphalt concrete particles.

[0090] In the present application, a crushing device is provided at the feed inlet of the crushing and shaping device, which is mainly used to pre-crush the asphalt concrete entering the crushing bin. The particle size of the pre-crushed asphalt concrete particles is reduced, which can effectively prevent the feed pipe and the crushing bin from being blocked, thereby ensuring the normal progress of the processing process.

[0091] The crushing and shaping device 3 in the present application is mainly used to crush large particles of asphalt concrete into small particles of asphalt concrete. The crushing and shaping device 3 is arranged in the casing 5 of the screening device 1, which can realize equipment integration and reduce the material flow path. During production, the optimal setting of the material conveying path can be achieved in the casing 5.

[0092] 4. Grading Silo

[0093] The graded material bin 2 includes a fine particle bin 21, a coarse particle bin 22 and an adjustable particle size bin 23, and the discharge ports of the fine particle bin 21, the coarse particle bin 22 and the adjustable particle size bin 23 are respectively connected to the asphalt mixing station 4. Vibration motors are respectively provided on the bin walls of the fine particle bin 21, the coarse particle bin 22 and the adjustable particle size bin 23 to assist in vibration discharge and ensure normal discharge of each bin.

[0094] In this embodiment, a controller is provided on the graded material bin 2, and the fine particle bin 21 is connected to the fine material inlet of the asphalt mixing plant through a fine material discharge pipe. A first variable frequency pump, a first solenoid valve and a first flow meter are provided on the fine material discharge pipe near the outlet end of the fine material discharge pipe. The first variable frequency pump is used to pump the fine particles in the fine particle bin 21 to the asphalt mixing plant; the first solenoid valve is used to receive the signal of the controller to realize automatic opening and closing; the first flow meter is used to detect the discharge flow of the fine material discharge pipe in real time; wherein, the controller can control the action of the first variable frequency pump and the first solenoid valve to realize automatic control and reduce human intervention. Furthermore, the controller can realize automatic monitoring and realize automatic control according to the target ratio.

[0095] In this embodiment, the coarse particle silo 22 is connected to the coarse particle inlet of the asphalt mixing plant through the coarse particle discharge pipe. A second variable frequency pump, a second solenoid valve and a second flow meter are provided on the coarse particle discharge pipe near the outlet end of the coarse particle discharge pipe. The second variable frequency pump is used to pump the coarse particles in the coarse particle silo 22 to the asphalt mixing plant; the second solenoid valve is used to receive the signal of the controller to realize automatic opening and closing; the second flow meter is used to detect the discharge flow of the coarse particle discharge pipe in real time.

[0096] In this embodiment, the adjustable particle size silo 23 is connected to the adjustable particle size material inlet of the asphalt mixing plant through the adjustable particle size discharge pipe. A third variable frequency pump, a third solenoid valve and a third flow meter are arranged on the adjustable particle size discharge pipe near the outlet end of the adjustable particle size discharge pipe. The third variable frequency pump is used to pump the adjustable particle size material in the adjustable particle size silo 23 to the asphalt mixing plant; the third solenoid valve is used to receive the signal of the controller to realize automatic opening and closing; the third flow meter is used to detect the discharge flow of the adjustable particle size discharge pipe in real time.

[0097] The above-mentioned controller can be controlled by PLC or microprocessor.

[0098] In the present application, the controller at least includes a processing module, a storage module, an information transceiver module and an output control module. The information transceiver module realizes the information transmission and reception between the modules in the controller, and the output control module is used to send the command signal sent by the controller to the external actuator to the external actuator to control the action of the external actuator. The processing module is used to compare the target ratio of fine particles, coarse particles and adjustable particle size materials stored in the storage module with the signals received from the first flow meter, the second flow meter and the third flow meter in real time, and send a control signal through the output control module to control the action of the first variable frequency pump, the first solenoid valve, the second variable frequency pump and the second solenoid valve.

[0099] Therefore, the present application achieves high-efficiency processing of crushing and grading through the crushing and shaping device 3 and the grading material bin 2.

[0100] In a specific application scenario, the asphalt mixing station 4 can be loaded with a belt conveyor 6, and the belt conveyor 6 is preferably capable of variable frequency speed regulation. Specifically, the materials discharged from the discharge port of the fine particle silo 21, the materials discharged from the discharge port of the coarse particle silo 22, and the materials discharged from the discharge port of the adjustable particle size silo 23 are all transported to the target loading point of the asphalt mixing station 4 by the belt conveyor 6. Of course, according to the actual situation on site, other equipment can also be used to load the asphalt mixing station.

[0101] The asphalt mixing station 4 used in conjunction with the waste asphalt concrete integrated processing equipment provided in the present application can be any existing asphalt mixing station 4.

[0102] The waste asphalt concrete integrated processing equipment provided by the present application is that the asphalt concrete particles fed to the screening device 1, the crushing and shaping device 3 and the graded material bin 2 are all transmitted in the equipment shell, and the overall structure is integrated and easy to remove dust. Compared with the prior art, there is no process of reciprocating flow of materials between devices in the air, the asphalt is not easy to age, and the material flows while processing, which is carried out synchronously, shortening the material flow time and eliminating the special material transmission time after the processing of each device is completed. Further, during the material processing process, after the material enters the screening device 1, until it is discharged into the asphalt mixing station 4 through the graded material bin 2, no material is discharged to the outside during the period, so there is no dust and other pollution, and according to environmental protection requirements, the existing asphalt mixing station 4 is adapted to be equipped with an environmental dust removal system, therefore, the integrated equipment provided by the present application does not need to be equipped with an additional dust removal device, and on the basis of meeting environmental protection requirements, the environmental protection investment cost is reduced.

[0103] Traditional waste asphalt concrete recycling and processing equipment is disconnected from the asphalt mixing system and cannot operate at the same time. That is, after all the waste asphalt concrete is recycled and processed, it is loaded as a whole into the asphalt mixing system for mixing. It is necessary to separately open the crushing and screening of the asphalt concrete milling materials, and the land area occupied is too large. Each equipment needs to be equipped with environmental protection devices to prevent dust and powder, etc. The environmental protection investment is large, which is not conducive to the implementation of environmental protection measures. The labor and machinery investment is too large, the use is cumbersome, and it is difficult to maintain. In addition, the material circulation time is long, it is easy to age, and it is easy to destroy the waste asphalt concrete ratio, resulting in a decrease in utilization rate and other problems.

[0104] The integrated equipment provided by the present application integrates asphalt concrete crushing, screening and grading, becoming a supporting equipment of the asphalt mixing station 4 and being integrated into the asphalt mixing system to fully utilize the utilization value of waste asphalt concrete; it adopts hydraulic power, crushing and shaping, variable frequency grading and other means to assist the operation of the equipment; on this basis, it can also realize control integration with the PLC of the asphalt mixing system of the asphalt mixing station 4, automatically complete all processing functions, shorten all tedious processes such as storage, crushing and screening, shorten processing time, realize screening, crushing, transmission and mixing to make asphalt concrete, and improve processing efficiency.

[0105] A plurality of legs 7 are arranged below the casing of the integrated waste asphalt concrete processing equipment provided in the present application, mainly playing a supporting role.

[0106] In one embodiment, a walking device may be provided at the bottom of the device to facilitate movement, such as rollers. Of course, the provision of a walking device will increase the overall cost of the device, resulting in high costs. The waste asphalt concrete integrated processing device provided by the present application is preferably provided with fixed support structures such as legs at the bottom of the casing, which not only has low manufacturing costs, but also has good overall stability of the device, and can be moved as a whole by other devices when it needs to be moved.

[0107] Embodiment 2

[0108] Compared with the first embodiment, the screening device in the integrated waste asphalt concrete processing equipment provided in this embodiment is a two-stage screening structure.

[0109] In this embodiment, the screening device includes a first screening unit and a second screening unit, and the first screening unit and the second screening unit constitute two-stage screening.

[0110] In this embodiment, see Figure 4 The first screening unit includes a first screen and a first vibrator. The first vibrator is provided with a first screen 15, and the aperture of the mesh on the first screen 15 is 10 mm. A feed port 12 is provided above the first screen 15, and the feed port 12 is connected to the discharge port of the loading hopper.

[0111] In order to discharge the material on the first screen 15, a first driving mechanism 16 is provided on the first screen 15, and the first driving mechanism 16 is preferably hydraulically driven.

[0112] Specifically, the first driving mechanism 16 can drive the first screen 15 to rise and fall; the first driving mechanism 16 includes a hydraulic rod, one end of the hydraulic rod is connected to one end of the first screen 15, and the other end of the first screen 15 is rotatably connected to the casing 5. When the hydraulic rod reciprocates in the hydraulic cylinder, it drives the first screen 15 to rotate, tilt or rotate and reset; when the first screen 15 is rotated and tilted, the screened material on the first screen 15 is fed to the second screening unit, and when the first screen 15 is rotated and reset, the first vibrator drives the first screen 15 to vibrate the screened material.

[0113] In order to collect the undersize material, a first collecting hopper 17 is provided below the first screen 15 , and a discharge port of the first collecting hopper 17 is connected to the fine particle silo 21 of the graded material silo 2 .

[0114] The second screening unit is used to screen out asphalt concrete particles with a particle size range of 10-20 mm and discharge them to the grading material bin 2, and to discharge the screened materials with a particle size range of more than 20 mm to the crushing and shaping device 3.

[0115] The second screening unit comprises a second screen and a second vibrator, on which a second screen 18 is arranged. The aperture of the mesh on the second screen 18 is 20 mm.

[0116] In order to discharge the material on the second screen 18, a second driving mechanism 19 is provided on the second screen 18, and the second driving mechanism 19 is preferably hydraulically driven.

[0117] Specifically, one end of the second screen 18 is rotatably connected to the casing 5, and the other end is connected to the second driving mechanism 19, and the second driving mechanism 19 is used to drive the second screen 18 to rise and fall; the second driving mechanism 19 includes a hydraulic rod, one end of which is connected to one end of the second screen 18. When the hydraulic rod reciprocates in the hydraulic cylinder, it drives the second screen 18 to rotate, tilt or rotate and reset; when the second screen 18 is rotated and tilted, the screened material on the second screen 18 is fed to the crushing and shaping device 3; when the second screen 18 is rotated and reset, the second vibrator drives the second screen 18 to vibrate the screened material.

[0118] In order to collect the undersize material, a second collecting hopper 110 is provided below the second screen 18 , and a discharge port of the second collecting hopper 110 is connected to the coarse particle silo 22 .

[0119] In order to enable the screened material on the first screen 15 to be discharged to the second screen 18, the second screen 18 is arranged adjacent to the first screen 15, and the vertical height of the second screen 18 is lower than the first screen 15, so that when the first screen 15 is tilted in a controlled manner, the screened material on the first screen 15 is poured into the second screen 18.

[0120] In the present application, the first screen 15 and the second screen 18 are rotatably connected to the housing 5, and the flow of materials is completed in the housing 5. The material flow can be poured by gravity, and corresponding pipes can be set in the housing 5 according to the structure to realize the material transmission of the pipes in the housing 5. The pipes can be installed on the housing 5 through the reinforcement bracket. Therefore, the material flow is convenient in the screening process, the time is short, and the efficiency is high.

[0121] Embodiment 3

[0122] Based on the integrated waste asphalt concrete processing equipment provided in the first embodiment, this embodiment provides a method for processing waste asphalt concrete using the equipment, including at least the following steps:

[0123] S1: Loading waste asphalt concrete to the screening device;

[0124] S2: The asphalt concrete particles with a particle size range of 0-10 mm are screened out by the first screening unit of the screening device and discharged into the fine particle silo of the graded material bin, and the asphalt concrete particles with a particle size range of 10-20 mm are screened out by the second screening unit and discharged into the coarse particle silo of the graded material bin;

[0125] S3: discharge the oversize materials with a particle size range of more than 20 mm to the crushing and shaping device;

[0126] S4: The crushing and shaping device crushes the large-size asphalt concrete particles into small particles, which are then screened out through the third screen 34 to the adjustable particle size silo 23 of the grading silo;

[0127] S5: According to the target mix ratio, the fine particle silo, the coarse particle silo and the adjustable particle size silo 23 are controlled to quantitatively discharge materials into the asphalt mixing station to obtain asphalt concrete of the target mix ratio.

[0128] Embodiment 4

[0129] Based on the integrated waste asphalt concrete processing equipment provided in the above-mentioned embodiment 2, this embodiment provides a processing method for processing waste asphalt concrete using the equipment, which at least includes the following steps:

[0130] S1: feeding the waste asphalt concrete to the screening device 1 through the feeding device;

[0131] S2: The waste asphalt concrete is subjected to primary screening by the first screening unit of the screening device 1, and the asphalt concrete particles with a particle size range of 0-10 mm are screened out and discharged to the fine particle silo 21 of the grading silo 2, and the screened material is sent to the second screening unit for screening;

[0132] S3: The second screening unit screens out asphalt concrete particles with a particle size range of 10-20 mm and discharges them to the coarse particle silo 22 of the grading silo 2, and discharges the oversize particles with a particle size range of more than 20 mm to the crushing and shaping device 3;

[0133] S4: The crushing and shaping device 3 crushes the large-diameter asphalt concrete particles into small particles, which are then sieved out through the third screen 34 to the adjustable particle size silo 23 of the grading silo;

[0134] S5: According to the target mix ratio, the fine particle silo, the coarse particle silo and the adjustable particle size silo 23 are controlled to quantitatively discharge materials into the asphalt mixing station to obtain asphalt concrete of the target mix ratio.

[0135] Combined with the contents described in the above-mentioned embodiment 1 and embodiment 2, the processing method provided in this embodiment is realized based on the above-mentioned integrated equipment. Naturally, the processing method also has the advantages of the integrated equipment described in the above-mentioned embodiment 1. On this basis, the processing method provided in this application can process materials while realizing material circulation, and the materials can be transferred to the asphalt mixing station for mixing preparation, and the whole is carried out synchronously, which shortens the material circulation time and eliminates the special material transmission time after the processing of each device is completed. Furthermore, during the material processing process, when the material enters the screening device, until it is discharged into the asphalt mixing station through the grading material bin, no material is discharged to the outside during this period, so there is no dust and other pollution. According to environmental protection requirements, existing asphalt mixing stations are equipped with environmental dust removal systems. Therefore, the integrated equipment provided in this application does not need to be equipped with additional dust removal devices, which reduces the environmental protection investment cost on the basis of meeting environmental protection requirements.

[0136] The inventor has carried out cost accounting, and the results show that the cost can be reduced by about 80% compared with the original equipment investment. In addition, the integrated equipment provided by this application has a simple structure, is easy to manufacture and promote, and makes full use of the original asphalt concrete ratio to improve the asphalt utilization rate; the integrated equipment provided by this application does not need to set up additional dust removal devices, and on the basis of meeting environmental protection requirements, reduces the environmental protection investment cost, and can integrate environmental protection measures into the asphalt mixing station, control dust at the end, and easily control the unorganized dust emission.

[0137] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0138] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. An integrated treatment equipment for waste asphalt concrete, characterized in that: It comprises a casing, in which a screening device, a crushing and shaping device and a grading material bin are arranged; The graded material bin includes a fine particle bin, a coarse particle bin and an adjustable particle size bin, and the graded material bin is provided with a discharge port adapted to the asphalt mixing plant; The screening device is used to receive asphalt concrete particles loaded thereon, and the screening device comprises a first screening unit and a second screening unit, the first screening unit is used to screen out asphalt concrete particles with a particle size within a first particle size range and discharge them into a fine particle silo, and the first screening unit comprises a first screen; The second screening unit is used to screen out asphalt concrete particles with a particle size within a second particle size range and discharge them to a coarse particle silo, the screened material of the first screening unit is screened by the second screening unit, and the screened material of the second screening unit is discharged to the crushing and shaping device, and the second screening unit includes a second screen; The crushing and shaping device is used to crush and shape the large-diameter asphalt concrete particles fed into it. The crushing and shaping device includes a crushing mechanism, and the crushing mechanism includes a hammer breaker. The discharge port of the crushing and shaping device is provided with a third screen. The crushed asphalt concrete particles are screened out through the third screen to the adjustable particle size silo.

2. The integrated waste asphalt concrete processing equipment according to claim 1 is characterized in that: The first screening unit and the second screening unit vibrate and screen the asphalt concrete particles loaded thereon under the drive of the vibrator; the first screening unit is used to screen out the asphalt concrete particles with a particle size range of 0-10mm and discharge them into the fine particle silo; the second screening unit is used to screen out the asphalt concrete particles with a particle size range of 10-20mm and discharge them into the coarse particle silo, and discharge the screened materials with a particle size range of more than 20mm into the crushing and shaping device.

3. The integrated waste asphalt concrete processing equipment according to claim 2 is characterized in that: The housing is formed with a feed port, a fine particle discharge port, a coarse particle discharge port and an adjustable particle size discharge port; The asphalt concrete particles to be processed enter the screening device from the feed port, and the feed port is arranged above the first screen; The first screen and the second screen are adjacently arranged on the frame, and the first screen and the second screen are detachably connected to the frame; the vibrator drives the frame to vibrate, and a driving mechanism is arranged on the frame, and the driving mechanism includes a hydraulic rod, one end of the hydraulic rod is connected to one end of the frame, and the other end of the frame is rotatably connected to the casing, and when the hydraulic rod reciprocates in the hydraulic cylinder, it drives the frame to rotate, tilt or rotate and reset; when the frame is rotated and tilted, the screened material on the second screening unit is fed to the crushing and shaping device, and when the frame is rotated and reset, the vibrator drives the first and second screens to vibrate the screening material.

4. The integrated waste asphalt concrete processing equipment according to claim 3 is characterized in that: The aperture of the mesh on the first screen is 10 mm, a first collecting hopper is arranged below the first screen, and a discharge port of the first collecting hopper is connected to the fine particle silo through a discharge pipe; The aperture of the mesh on the second screen is 20 mm. A second collecting hopper is arranged below the second screen. The discharge port of the second collecting hopper is connected to the coarse particle silo through a discharge pipe.

5. The integrated waste asphalt concrete processing equipment according to claim 2 is characterized in that: The first screen is provided with a first driving mechanism and a first vibrator, wherein the first driving mechanism is fixed on the casing; the first driving mechanism is used to drive the first screen to rise and fall; the first driving mechanism comprises a hydraulic rod, one end of which is connected to one end of the first screen, and the other end of the first screen is rotatably connected to the casing, and when the hydraulic rod reciprocates in the hydraulic cylinder, it drives the first screen to rotate, tilt or rotate and reset; when the first screen is rotated and tilted, the screened material on the first screen is fed to the second screening unit, and when the first screen is rotated and reset, the first vibrator drives the first screen to vibrate the screened material.

6. The integrated waste asphalt concrete processing equipment according to claim 5 is characterized in that: The second screen is provided with a second driving mechanism and a second vibrator; one end of the second screen is rotatably connected to the housing, and the other end is connected to the second driving mechanism, the second driving mechanism is used to drive the second screen to rise and fall, and the second driving mechanism is fixed to the housing; The second driving mechanism includes a hydraulic rod, one end of which is connected to one end of the second screen. When the hydraulic rod moves back and forth in the hydraulic cylinder, it drives the second screen to rotate and tilt or rotate and reset; when the second screen is rotated and tilted, the screened material on the second screen is fed to the crushing and shaping device; when the second screen is rotated and reset, the second vibrator drives the second screen to vibrate the screened material.

7. The integrated waste asphalt concrete processing equipment according to claim 1 is characterized in that: The crushing and shaping device comprises a crushing chamber, a hammer crushing main shaft is arranged in the crushing chamber, a plurality of hammer crushing knives are arranged on the hammer crushing main shaft, both ends of the hammer crushing main shaft are rotatably connected with the crushing chamber through bearings, and a driving motor for driving the hammer crushing main shaft to rotate is arranged on the outer wall of the crushing chamber; The crushing bin is provided with a feed port, and a feed pipe is provided on the feed port. When the second screen rotates and tilts under the drive of the second driving mechanism, the screened material on the second screen is poured into the feed pipe; the crushing bin is also provided with a discharge port, and the third screen is provided on the discharge port; when the hammer crushing spindle rotates, the hammer crushing knife is used to crush the asphalt concrete particles entering the crushing bin, and the materials that can be screened out from the mesh of the third screen in the crushing bin are discharged to the adjustable particle size bin through the discharge pipe; The discharge port is connected to a discharge pipe, and the outlet end of the discharge pipe is arranged above the adjustable particle size silo.

8. The integrated waste asphalt concrete processing equipment according to claim 7 is characterized in that: A crushing device is provided at the feed inlet of the crushing bin, and the crushing device is used to crush the asphalt concrete entering the crushing bin; An adjusting mechanism for adjusting the third screen is provided at the discharge port of the crushing bin.

9. The integrated waste asphalt concrete processing equipment according to claim 1 is characterized in that: The grading material bin is provided with a controller, the fine particle bin is connected to the fine material inlet of the asphalt mixing plant through a fine material discharge pipe, the coarse particle bin is connected to the coarse material inlet of the asphalt mixing plant through a coarse material discharge pipe, and the adjustable particle size bin is connected to the adjustable particle size inlet of the asphalt mixing plant through an adjustable particle size discharge pipe; The outlet end of the fine material discharge pipe is provided with a first variable frequency pump, a first solenoid valve and a first flow meter, the outlet end of the coarse material discharge pipe is provided with a second variable frequency pump, a second solenoid valve and a second flow meter; the outlet end of the adjustable particle size discharge pipe is provided with a third variable frequency pump, a third solenoid valve and a third flow meter; The first variable frequency pump, the first solenoid valve, the first flow meter, the second variable frequency pump, the second solenoid valve, the second flow meter, the third variable frequency pump, the third solenoid valve and the third flow meter are all connected to the controller signal; The first variable frequency pump is used to pump the fine particles in the fine particle silo to the asphalt mixing station, and the second variable frequency pump is used to pump the coarse particles in the coarse particle silo to the asphalt mixing station; the third variable frequency pump is used to pump the adjustable particle size material in the adjustable particle size silo to the asphalt mixing station; The first solenoid valve, the second solenoid valve and the third solenoid valve are respectively used to receive signals from the controller to realize automatic opening and closing; The first flow meter is used to detect the discharge flow rate of the fine material discharge pipe in real time, the second flow meter is used to detect the discharge flow rate of the coarse material discharge pipe in real time, and the third flow meter is used to detect the discharge flow rate of the adjustable particle size discharge pipe in real time; The controller includes a processing module, a storage module, an information transceiver module and an output control module. The processing module is used to send a control signal through the output control module according to the signal received from the first flow meter, the second flow meter and the third flow meter. The control signal is used to control the actions of the first variable frequency pump, the first solenoid valve, the second variable frequency pump, the second solenoid valve, the third variable frequency pump and the third solenoid valve; the storage module stores the target ratio of fine particles, coarse particles and adjustable particle size materials; Vibration motors are respectively arranged on the silo wall of the fine particle silo, the silo wall of the coarse particle silo, and the silo wall of the adjustable particle size silo.

10. A method for treating waste asphalt concrete using the integrated waste asphalt concrete treatment equipment according to claim 1, characterized in that: The steps include: S1: Loading waste asphalt concrete to the screening device; S2: screening out asphalt concrete particles in a first particle size range through a first screening unit of the screening device and discharging them into a fine particle silo of the graded material bin, and screening out asphalt concrete particles in a second particle size range through a second screening unit and discharging them into a coarse particle silo of the graded material bin; S3: discharging the oversize material with a particle size larger than the second particle size range to the crushing and shaping device; S4: The crushing and shaping device crushes the large-diameter asphalt concrete particles into small particles, and then sieves them out through the third screen to the adjustable particle size silo of the grading silo; S5: According to the target mix ratio, the fine particle silo, the coarse particle silo and the adjustable particle size silo are controlled to quantitatively discharge materials into the asphalt mixing station to obtain asphalt concrete with the target mix ratio.

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