CN221000439U - Asphalt mixture RAP on-site recycling treatment device - Google Patents

Abstract

The utility model discloses an on-site recycling treatment device for an asphalt mixture RAP, which comprises a shell, and a crushing heating component, a secondary heating component and a screening component which are sequentially arranged below a feed inlet in the shell, wherein the screening component comprises a large-aperture vibration screening component, a middle-aperture vibration screening component and a small-aperture vibration screening component which are sequentially and vertically arranged and used for carrying out classified screening filtration on the asphalt mixture RAP, the crushing heating component comprises a crushing cutter head which is horizontally arranged below the feed inlet in a rotating manner and a primary heating component which is horizontally arranged corresponding to the crushing cutter head and used for heating the crushed asphalt mixture RAP, and the primary heating component is used for carrying out wind-heat heating on the crushed asphalt mixture RAP; the method can realize the on-site recycling and on-site utilization of the asphalt mixture RAP, and can accurately screen the crushed particle sizes of the asphalt mixture RAP, thereby realizing the classification of different particle sizes of the RAP.

Description

Asphalt mixture RAP on-site recycling treatment device

Technical Field

The utility model relates to the field of recycling of construction waste, in particular to an on-site recycling treatment device for asphalt mixture RAP.

Background

Along with the gradual entry of various grades of service roads in China into major and minor repair stages, the generation of a large amount of waste asphalt mixture is unavoidable. The basic idea of the solid waste treatment is to adopt a treatment means of recycling and reducing, recycling is one of important means of recycling and reducing the solid waste, and the recycled asphalt mixture RAP is treated by a technical means, so that the RAP can be regenerated and recycled, and raw materials can be provided for researches in the civil engineering fields such as improvement of high liquid limit soil. The prior art recycling device for the recycled asphalt mixture RAP generally neglects the complexity of the particle size of the RAP component, and the prior art recycling device can realize primary screening or secondary screening of the RAP, but has the defect of poor screening effect, and neglects the gain effect of heating on crushing and screening. More importantly, the recycling device of the recycled asphalt mixture RAP in the prior art cannot accurately screen the particle size of the RAP component, and RAP is easy to agglomerate to form false large particles, and is fine, so that the material grading is easy to influence when the recycling device is used in situ. In addition, the existing recovery device cannot achieve on-site recovery and on-site utilization.

Disclosure of utility model

Therefore, the utility model aims to provide the on-site recycling treatment device for the asphalt mixture RAP, which can realize on-site recycling and on-site utilization of the asphalt mixture RAP, can accurately screen the crushed particle sizes of the asphalt mixture RAP, realizes grading of different particle sizes of the RAP, and improves the recycling efficiency of the RAP.

The utility model discloses an on-site recycling treatment device for asphalt mixture RAP, which comprises a shell, and a crushing heating component, a secondary heating component and a screening component which are sequentially arranged below a feed inlet of the shell, wherein the screening component comprises a large-aperture vibration screening component, a middle-aperture vibration screening component and a small-aperture vibration screening component which are sequentially and vertically arranged and used for carrying out classified screening filtration on the asphalt mixture RAP, the crushing heating component comprises a crushing cutter head which is horizontally arranged below the feed inlet in a rotating manner and a primary heating component which is horizontally arranged corresponding to the crushing cutter head and used for heating the crushed asphalt mixture RAP, and the primary heating component is used for carrying out wind-heat heating on the crushed asphalt mixture RAP and the secondary heating component is used for carrying out electric heating on the asphalt mixture RAP;

Further, the crushing cutter head is arranged on a rotating shaft, and the rotating shaft is driven by a driving motor to rotate;

further, the primary heating component comprises a warm air blower and an air guide pipe for leading hot air in the warm air blower to the asphalt mixture RAP;

Further, the warm air blower is arranged on the inner wall of the shell, an inner partition plate is arranged on the upper cover of the warm air blower, an outer partition plate is arranged outside the inner partition plate and forms a sealing space with the inner partition plate, and the air guide pipe is communicated with the warm air blower and extends to the outside of the outer partition plate through the sealing space to form 3 air outlets corresponding to the crushing cutter heads;

further, the secondary heating assembly comprises a heating plate which is arranged below the rotating shaft in a horizontal downward inclined mode, an aluminum bar is embedded in the heating plate, and the aluminum bar surrounds copper wires;

Further, the large-aperture vibration screening component comprises a large-aperture screen mesh arranged below the heating plate in a horizontal inclined downward mode and a vibration motor arranged on the inner wall of the shell and used for driving the large-aperture screen mesh to vibrate, a spring is connected between the vibration motor and the large-aperture screen mesh, and the inclination direction of the large-aperture screen mesh is opposite to that of the heating plate;

Further, the middle-aperture vibration screening assembly comprises a spiral conveying shaft arranged below the large-aperture screen and a sleeve sleeved on the outer peripheral side of the spiral conveying shaft, a middle-aperture screen is arranged at the bottom of the sleeve, the sleeve is fixed in a limiting groove to inhibit aggregate from scattering, the spiral conveying shaft is driven by a rotating motor, an inclined conveying plate is arranged between the spiral conveying shaft and the large-aperture screen, the inclined conveying plate is arranged in a horizontal downward inclined mode, and asphalt mixture RAP passing through the large-aperture screen enters the spiral conveying shaft through the inclined conveying plate;

Further, the small-aperture vibration screening assembly comprises a small-aperture screen mesh arranged below the middle-aperture screen mesh in a horizontal downward inclined mode and a vibration motor arranged on the inner wall of the shell and used for driving the small-aperture screen mesh to vibrate, and a spring is connected between the vibration motor and the small-aperture screen mesh;

Further, the large-aperture screen mesh and the small-aperture screen mesh are arranged in parallel and form an included angle of 30 degrees with the horizontal plane, the inclined conveying plate forms an included angle of 30 degrees with the horizontal plane, and the heating plate of the secondary heating assembly forms an included angle of 30 degrees with the horizontal plane;

Further, the device also comprises a funnel-shaped material conveying plate and a material collecting box which are arranged below the small-aperture screen, and a material outlet hopper which is arranged outside the shell and corresponds to the large-aperture screen, the medium-aperture screen and the small-aperture screen respectively.

The on-site recycling treatment device for the asphalt mixture RAP can realize on-site recycling and on-site utilization of the asphalt mixture RAP, can accurately screen the crushed particle sizes of the asphalt mixture RAP, realizes grading of different particle sizes of the RAP, and improves the recycling efficiency of the RAP.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples:

FIG. 1 is a schematic view of a front view in cross section;

FIG. 2 is a schematic cross-sectional view of a primary heating element according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a secondary heating assembly according to the present utility model;

FIG. 4 is a schematic cross-sectional view of a heating plate fixing support of the present utility model;

FIG. 5 is a schematic cross-sectional view of a large aperture vibratory screening assembly according to the present utility model;

FIG. 6 is a schematic cross-sectional view of a large aperture vibratory screening assembly mounting bracket according to the present utility model;

FIG. 7 is a schematic cross-sectional view of a vibratory screening assembly according to the present utility model;

FIG. 8 is a schematic cross-sectional view of a small-bore vibratory screening assembly according to the present utility model;

Fig. 9 is a schematic cross-sectional view of a small-bore vibratory screening assembly according to the present utility model.

Reference numerals illustrate:

1. A housing; 2. a primary heating assembly; 3. a crushing assembly; 4. a secondary heating assembly; 5. large aperture vibratory screen assemblies (primary screen assemblies); 6. a medium pore size vibratory screen assembly (secondary screen assembly); 7. small bore vibratory screen assemblies (tertiary screen assemblies); 8. a support plate; 9. oblique material conveying plates; 10. a funnel-type material conveying plate; 11. a heating plate fixing support; 12. a primary screen assembly mounting bracket; 13. a three-stage screening assembly fixing support; 101. a feed inlet; 102. a first-stage screening discharge hopper; 103. a second-stage screening discharge hopper; 104. three-stage screening and discharging hoppers; 105. support legs; 106. a collection box; 201. a warm-air drier; 202. an inner partition; 203. an air guide pipe; 204. a four-way joint; 205. an outer partition; 301. a rotating shaft; 302. crushing the cutter head; 303. a rotating motor; 401. a heating motor; 402 a protective shell; 403. copper wires; 404. an aluminum bar; 405. a heat insulating sleeve; 406. a fixed rod; 407 a heating plate; 501. a large aperture screen; 502. a spring; 503. a protective shell; 504. a vibration motor; 505. a fixed rod; 601. a rotating motor; 602. a sleeve; 603. a screw conveying shaft; 604. a medium pore size screen; 605. a limit groove; 701. a small pore size screen; 702. a spring; 703. a vibration motor; 704. a protective shell; 705. and a fixing rod.

Detailed Description

The utility model discloses an on-site recycling treatment device for an asphalt mixture RAP, which comprises a shell 1, a crushing heating component, a secondary heating component 3 and a screening component, wherein the crushing heating component, the secondary heating component 3 and the screening component are sequentially arranged below a feed inlet 101 in the shell 1, the screening component comprises a large-aperture vibration screening component 5, a middle-aperture vibration screening component 6 and a small-aperture vibration screening component 7 which are sequentially and vertically arranged and used for carrying out classified screening filtration on the asphalt mixture RAP, the crushing heating component comprises a crushing cutter head 302 which is horizontally arranged below the feed inlet 101 in a rotating manner, and a primary heating component 2 which is horizontally arranged corresponding to the crushing cutter head 302 and used for heating the crushed asphalt mixture RAP, the primary heating component 2 is used for carrying out wind-heat heating on the crushed asphalt mixture RAP, and the secondary heating component 4 is used for carrying out electrothermal heating on the asphalt mixture RAP; through smashing heating element, second grade heating element 4 and large aperture vibration screening subassembly 5, well aperture vibration screening subassembly 6 and aperture vibration screening subassembly 7, not only can carry out one-level and second grade heating treatment to the RAP, also can broken the RAP, provide tertiary screening moreover, can realize the classification of the different particle diameters of RAP, improved the recycling efficiency of RAP. The asphalt mixture RAP is crushed through the horizontal rotation of the crushing cutter head, and the materials are heated after crushing, so that the materials can be conveniently utilized on site, and the subsequent screening treatment of the particles is facilitated by heating.

In this embodiment, the crushing cutter head 302 is disposed on a rotating shaft 301, and the rotating shaft 301 is driven to rotate by a driving motor 303; the primary heating assembly 2 comprises a warm air blower 201 and an air guide pipe 203 for leading hot air in the warm air blower 201 to the asphalt mixture RAP; the hot air is provided by the fan heater 201 for heating the asphalt mixture RAP, the crushing cutter heads 302 are arranged in a plurality of groups and are fixed on the rotating shaft 301, the crushing cutter heads 302 are driven to rotate by the rotating shaft 301 to crush the asphalt mixture RAP, and the rotating shaft is provided with more than two side by side. That is, the crushing assembly 3 comprises two rotating shafts 301, two groups of crushing cutter heads 302 and two rotating motors 303, the rotating shafts 301 are fixedly mounted on the output shafts of the rotating motors 303, the output shafts of the rotating motors 303 drive the rotating shafts 301 to rotate, the crushing cutter heads 302 are fixedly mounted on the rotating shafts 301, and the two groups of crushing cutter heads 302 cooperatively crush so as to increase the RAP crushing efficiency.

In this embodiment, the fan heater 201 is disposed on the inner wall of the casing 1, an inner partition plate 202 is covered on the fan heater 201, an outer partition plate 205 is disposed outside the inner partition plate 202 and forms a sealed space with the inner partition plate 202, and the air guide pipe 203 is communicated with the fan heater 201 and extends to the outside of the outer partition plate 205 through the sealed space to form 3 air outlets corresponding to the crushing cutter heads; the electric fan heater 201 is fixed on the left side of the device shell 1, the inner partition 202 is welded on the left inner wall of the device shell 1, the four air guide pipes 203 are connected through the four-way joint 204, the outer partition 205 is welded and fixed on the left side and the upper inner wall of the device shell 1, the inner partition 202 and the outer partition 205 support the air guide pipes 203, the inner partition 202 and the outer partition 205 cooperatively inhibit scattering of RAP in crushing, protection of the electric fan heater 201 is achieved, hot air conveyed by the electric fan heater 201 heats the RAP in a first stage, the RAP is heated and blown away to the right end of the secondary heating assembly 4, and the contact time of the RAP and the secondary heating assembly 4 is prolonged, so that the heating efficiency of the secondary heating assembly 4 is improved. The air guide pipes 203 movably penetrate between the inner partition plate 202 and the outer partition plate 205 until the air guide pipes extend to the left side of the crushing assembly 3, and the air outlets of the three air guide pipes 203 improve the heating efficiency of RAP, so that the arrangement of the inner partition plate 202 and the outer partition plate 205 is convenient for fixing the air guide pipes 203. The rotating shaft 301 movably penetrates through the outer partition plate 205 until the rotating shaft extends into the first-stage heating assembly 2, and the arrangement of the outer partition plate 205 suppresses the influence of scattering in the RAP crushing process on the first-stage heating assembly 2 and is beneficial to fixing the rotating shaft 301. The supporting plate 8 is welded on the right inner wall of the device shell 1, which is beneficial to the fixation of the secondary heating assembly 4.

In this embodiment, the secondary heating assembly 4 includes a heating plate 407 disposed below the rotating shaft 301 in a manner of being inclined horizontally and downwardly, an aluminum rod 404 is embedded in the heating plate 407, and the aluminum rod 404 is wound around a copper wire 403; the secondary heating assembly 4 comprises a heating motor 401, a protective shell 402, two copper wires 403, two aluminum bars 404, a heat insulation sleeve 405, a fixing rod 406 and a heating plate 407, wherein the aluminum bars 404 are fixed inside the heating plate 407, the copper wires 403 encircle the aluminum bars 404, the heat insulation sleeve 405 is fixed on the outer surface of the copper wires 403 exposed out of the heating plate to play a role in protecting and inhibiting heat exchange, the copper wires 403 are fixed inside the heating motor 401, the heating motor 401 heats the copper wires 403, heat energy is conducted to the two aluminum bars 404 until the heating plate 407 is heated, the protective shell 402 is welded on the outer wall of the device shell 1, the fixing rod 406 penetrates through openings on the right end of the heating plate fixing support 11 and the heating plate 407, the secondary heating assembly 4 can be detached by pulling out the fixing rod 406, later maintenance and replacement are facilitated, the primary heating assembly 2 and the secondary heating assembly 4 work cooperatively, the heating treatment efficiency of RAP is improved, and the heating of the RAP after crushing is completed.

In this embodiment, the large-aperture vibratory screening assembly 5 includes a large-aperture screen 501 disposed below the heating plate 407 in a horizontally inclined downward manner, and a vibration motor 504 disposed on the inner wall of the housing 1 for driving the large-aperture screen 501 to vibrate, wherein a spring 502 is connected between the vibration motor 504 and the large-aperture screen 501, and the inclination direction of the large-aperture screen 501 is opposite to the inclination direction of the heating plate 407; the large-aperture vibration screening assembly 5 comprises a large-aperture screen 501, a spring 502, a protective shell 503, a vibration motor 504 and a fixed rod 505, wherein the bottom of the spring 502 is fixed on the output shaft of the vibration motor 504, the upper part of the spring 502 is fixed on the bottom of the left end of the large-aperture screen 501, the vibration motor 504 drives the spring 502 to vibrate, screening efficiency is improved, the protective shell 503 is welded on the inner wall of the left side of the device shell 1, the fixed rod 505 passes through the right side of the large-aperture screen 501 and an opening of a first-stage screening assembly fixing support 12, the fixed rod 505 is pulled out to complete the disassembly of the first-stage screening assembly 5, later maintenance and replacement are facilitated, part of RAP components are conveyed out of the device shell 1 in the link and collected in a first-stage screening hopper 102, and the large-aperture and lower RAP components conforming to the size of the large-aperture screen 501 are filtered to the middle-aperture vibration screening assembly 6.

In this embodiment, the middle-aperture vibratory screening assembly 6 includes a screw conveying shaft 603 disposed below the large-aperture screen 501 and a sleeve 602 sleeved on the outer peripheral side of the screw conveying shaft 603, a middle-aperture screen 604 is disposed at the bottom of the sleeve 602, the sleeve 602 is fixed inside a limiting groove 605 to inhibit scattering of aggregate, the screw conveying shaft 603 is driven by a rotating motor 601, an inclined conveying plate 9 is disposed between the screw conveying shaft 603 and the large-aperture screen 604, the inclined conveying plate 9 is disposed in a manner of being inclined downward horizontally, and an asphalt mixture RAP passing through the large-aperture screen 501 enters the screw conveying shaft 603 through the inclined conveying plate 9; the middle-aperture vibration screening assembly 6 comprises a rotating motor 601, a sleeve 602, a spiral conveying shaft 603, a middle-aperture screen 604 and a limiting groove 605, wherein the rotating motor 601 is fixed on the left side of a device shell 1, the spiral conveying shaft 603 is fixed on an output shaft of the rotating motor 601, the sleeve 602 is fixed inside the limiting groove 605, scattering of aggregate is effectively restrained, the middle-aperture screen 604 is arranged at the bottom of the sleeve 602, the spiral conveying shaft 603 conveys coarse aggregate and other large-aperture components in RAP to the secondary screening discharge hopper 103, and fine aggregate, mineral powder and other middle-aperture and following components in RAP are filtered to the small-aperture vibration screening assembly 7 by the middle-aperture screen 604 at the lower part of the sleeve 602.

In this embodiment, the small-aperture vibration screen assembly 7 includes a small-aperture screen 701 disposed below the middle-aperture screen 604 in a horizontally downward inclined manner, and a vibration motor 703 disposed on an inner wall of the housing 1 for driving the small-aperture screen 701 to vibrate, and a spring 702 is connected between the vibration motor 703 and the small-aperture screen 701; including aperture screen cloth 701, spring 702, vibrating motor 703, protective housing 704 and dead lever 705, the output shaft at vibrating motor 703 is fixed to spring 702 bottom, and spring 702 upper portion is fixed in the left end bottom of aperture screen cloth 701, and vibrating motor 703 drives spring 702 vibration, has improved screening efficiency, and protective housing 704 welds the device casing 1 left side inner wall, dead lever 705 pass aperture of aperture screen cloth 701 right side and aperture vibrating screen subassembly 7 fixed bolster 13, and the dismantlement of tertiary screening subassembly 7 can be accomplished to the dead lever 705 of taking out, does benefit to later maintenance and replacement, and fine aggregate etc. medium aperture component in RAP is carried out device casing 1 outside in this link, collects in tertiary screening play hopper 103, and RAP component such as mineral powder that accords with aperture screen cloth 701 size is filtered to collecting box 106.

In this embodiment, the large-aperture screen 501 and the small-aperture screen 701 are disposed in parallel and form an included angle of 30 ° with the horizontal plane, the oblique feeding plate 9 forms an included angle of 30 ° with the horizontal plane, and the heating plate 407 of the secondary heating assembly 4 forms an included angle of 30 ° with the horizontal plane; the inclined material conveying plate 9 forms an included angle of 30 degrees with the horizontal plane, which is beneficial to the transmission of RAP. The secondary heating component 4 is fixed by the fixing rod 406, forms an included angle of 30 degrees with the horizontal plane, and is beneficial to disassembly and RAP transmission. The large-aperture screen 501 and the small-aperture screen 701 are arranged in parallel, and form an included angle of 30 degrees with the horizontal plane, so that the RAP conveying and screening are facilitated. The principle of fixing and removing the large-aperture vibratory screening assembly 5 and the small-aperture vibratory screening assembly 7 is the same as that of the secondary heating assembly 4, and will not be described in detail herein. It should be noted that, the structures and the working principles of the fan heater 201, the rotating motor 303, the heating motor 401, the vibration motor 504 and the vibration motor 703 in this embodiment are the same as those known to those skilled in the art, and are not repeated here.

In this embodiment, the hopper-shaped material conveying plate 10 and the material collecting box 106 are arranged below the small-aperture screen 701, and the discharge hoppers (the first-stage screening hopper 102, the second-stage screening hopper 103 and the third-stage screening hopper 104) are respectively arranged outside the casing 1 corresponding to the large-aperture screen 501, the middle-aperture screen 604 and the small-aperture screen 701.

In summary, the asphalt mixture RAP in-situ recycling treatment device of the utility model comprises a device shell 1, a primary heating component 2, a crushing component 3, a secondary heating component 4, a large-aperture vibrating screen component 5, a middle-aperture vibrating screen component 6, a small-aperture vibrating screen component 7, a supporting plate 8, an inclined material conveying plate 9, a funnel-shaped material conveying plate 10, a heating plate fixing support 11, a primary screening component fixing support 12 and a tertiary screening component fixing support 13, wherein the primary heating component 2 is arranged at the left side of the top end of the device shell 1, the crushing component 3 is arranged at the right side of the top end of the device shell 1, the secondary heating component 4 is arranged at the lower side of the crushing component 3, the large-aperture vibrating screen component 5 is arranged at the lower side of the secondary heating component 4, the inclined material conveying plate 9 is welded and fixed at the lower side of the large-aperture vibrating screen component 5, the top opening at the left side of the middle-aperture vibrating screen component 6 is arranged at the lower side of the inclined material conveying plate 9, the small-aperture vibrating screen component 7 is arranged at the lower side of the middle-aperture vibrating screen component 6, the material conveying plate 10 is welded and fixed at the two sides of the inner wall of the device shell 1, the heating plate 11 and the heating plate fixing support 12 and the tertiary screening component fixing support 13 are arranged at the right side of the device shell 1. The feed inlet 101 is installed on the device casing 1 top, and the RAP of being convenient for is put in, and the device casing 1 right side just corresponds the position of big aperture vibration screening subassembly 5, well aperture vibration screening subassembly 6 and aperture vibration screening subassembly 7 and installs one-level screening play hopper 102, second grade screening play hopper 103 and tertiary screening play hopper 104 respectively, is convenient for collect the waste material of corresponding particle diameter after the screening, and supporting leg 105 is installed to device casing 1 bottom both sides, and device casing 1 bottom opening is provided with collecting box 106.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (10)

1. An on-site recycling treatment device for asphalt mixture RAP, which is characterized in that: including the casing with set gradually in the casing smash heating element, second grade heating element and the screening subassembly of feed inlet below, the screening subassembly is including vertical big aperture vibration screening subassembly, well aperture vibration screening subassembly and the aperture vibration screening subassembly that is used for classifying screen filtration to pitch mixture RAP in proper order, smash heating element including setting up in the crushing tool bit of feed inlet below and corresponding crushing tool bit level setting in the mode of horizontal rotation be used for carrying out the one-level heating element of heating to broken pitch mixture RAP, one-level heating element is used for carrying out the wind-heat heating to broken pitch mixture RAP, second grade heating element is used for carrying out electrothermal heating to pitch mixture RAP.

2. The in-situ recycling treatment device for asphalt mixture RAP according to claim 1, wherein: the crushing cutter head is arranged on a rotating shaft, and the rotating shaft is driven by a driving motor to rotate.

3. The asphalt mixture RAP in-situ recycling treatment device according to claim 2, wherein: the primary heating component comprises a warm air blower and an air guide pipe for leading hot air in the warm air blower to the asphalt mixture RAP.

4. An asphalt mixture RAP in-situ recycling treatment device according to claim 3, wherein: the fan heater sets up on shells inner wall, fan heater upper cover is equipped with interior baffle, is provided with outer baffle and forms sealed space with interior baffle outside interior baffle, the air duct communicates with the fan heater and extends to the air outlet that forms 3 corresponding broken tool bits outside the outer baffle through sealed space.

5. The in-situ recycling treatment device for asphalt mixture RAP according to claim 4, wherein: the secondary heating assembly comprises a heating plate which is arranged below the rotating shaft in a horizontal downward inclination mode, an aluminum bar is buried in the heating plate, and copper wires are wound on the aluminum bar.

6. The in-situ recycling treatment device for asphalt mixture RAP according to claim 5, which is characterized in that: the large-aperture vibration screening assembly comprises a large-aperture screen mesh arranged below the heating plate in a horizontal inclined downward mode and a vibration motor arranged on the inner wall of the shell and used for driving the large-aperture screen mesh to vibrate, a spring is connected between the vibration motor and the large-aperture screen mesh, and the inclination direction of the large-aperture screen mesh is opposite to that of the heating plate.

7. The in-situ recycling treatment device for asphalt mixture RAP according to claim 6, wherein: the middle aperture vibration screening assembly comprises a spiral conveying shaft arranged below a large aperture screen and a sleeve sleeved on the outer periphery of the spiral conveying shaft, the middle aperture screen is arranged at the bottom of the sleeve, the sleeve is fixed inside a limiting groove to inhibit aggregate scattering, the spiral conveying shaft is driven by a rotating motor, an inclined conveying plate is arranged between the spiral conveying shaft and the large aperture screen, the inclined conveying plate is arranged in a mode of being inclined downwards horizontally, and asphalt mixture RAP passing through the large aperture screen enters the spiral conveying shaft through the inclined conveying plate.

8. The in-situ recycling treatment device for asphalt mixture RAP according to claim 7, wherein: the small-aperture vibration screening assembly comprises a small-aperture screen mesh arranged below the medium-aperture screen mesh in a horizontal downward-inclined mode and a vibration motor arranged on the inner wall of the shell and used for driving the small-aperture screen mesh to vibrate, and a spring is connected between the vibration motor and the small-aperture screen mesh.

9. The in-situ recycling treatment device for asphalt mixture RAP according to claim 8, wherein: the large-aperture screen mesh and the small-aperture screen mesh are arranged in parallel and form an included angle of 30 degrees with the horizontal plane, the inclined conveying plate forms an included angle of 30 degrees with the horizontal plane, and the heating plate of the secondary heating assembly forms an included angle of 30 degrees with the horizontal plane.

10. The in-situ recycling treatment device for asphalt mixture RAP according to any one of claims 1 to 9, which is characterized in that: the device also comprises a funnel-shaped material conveying plate and a material collecting box which are arranged below the small-aperture screen, and a material outlet hopper which is arranged outside the shell and corresponds to the large-aperture screen, the medium-aperture screen and the small-aperture screen respectively.