CN112064452A - Multifunctional asphalt concrete preparation device and preparation method - Google Patents
Multifunctional asphalt concrete preparation device and preparation method Download PDFInfo
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- CN112064452A CN112064452A CN202010953842.4A CN202010953842A CN112064452A CN 112064452 A CN112064452 A CN 112064452A CN 202010953842 A CN202010953842 A CN 202010953842A CN 112064452 A CN112064452 A CN 112064452A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
- E01C19/104—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
Abstract
A multifunctional asphalt concrete preparation device and a preparation method belong to the field of municipal infrastructure. The two feed hoppers respectively penetrate through the outer shell and are fixedly connected to the side surface of the inner shell and communicated with the feed inlet on the inner shell; the electric heating wire is wound on the outer side of the inner shell; the two discharge ports are symmetrically arranged at the lower ends of the inner shell and the outer shell. The stirring device I and the stirring device II are matched for use, so that the purpose of more thorough stirring is achieved. The bridge deck asphalt concrete with the functions of skid resistance and noise reduction is formed by adopting high-viscosity high-elasticity environment-friendly composite modified rubber asphalt and multi-crushed stone grading. The oily warm-mixing agent is adopted to reduce the construction temperature of the high-viscosity high-elasticity environment-friendly composite modified rubber asphalt, and the mixture can still keep good construction characteristics under the condition that the external temperature of a cold region and the temperature of the mixture per se are reduced quickly. The low-freezing-point filler is used to replace mineral powder and added into the asphalt mixture to form the high-performance asphalt concrete capable of autonomously deicing and melting snow.
Description
Technical Field
The invention relates to a multifunctional asphalt concrete preparation device and a preparation method, and belongs to the field of municipal infrastructure.
Background
With the acceleration of urbanization in China, the number of paved roads, expressways, urban viaducts and the like is increased year by year. The service life of the currently used paving material can reach the expected effect under the general external conditions, but in severe cold areas in northern China, the temperature is low in winter, so that the service life of the pavement is shortened, the snowfall amount is large, and traffic accidents are easily caused if the pavement is frozen. The conventional concrete mixing equipment is also easy to have the problem of uneven mixing, which further influences the service life of the paving material.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a multifunctional asphalt concrete preparation device and a preparation method.
The invention achieves the purpose, and adopts the following technical scheme:
a multifunctional asphalt concrete preparation device comprises an upper shell, an outer shell, two ventilation windows and two brackets; the upper shell is fixedly connected to the upper end of the outer shell; the two ventilation windows are symmetrical and movably connected to the side face of the outer shell; the two brackets are fixedly connected to the lower end of the side surface of the outer shell; the multifunctional asphalt concrete preparation device also comprises two feed hoppers, an electric heating wire, an inner shell, a plurality of stirring devices I, two discharge ports, a shaft I, a stirring device II, a shaft II, an upper baffle, a motor I and a motor bracket I; the inner shell is fixedly connected with the lower end of the upper shell, the inner shell is positioned in the outer shell, and a feed inlet is formed in the side surface of the inner shell; the two feed hoppers penetrate through the outer shell and are fixedly connected to the side surface of the inner shell respectively and communicated with the feed inlet on the inner shell; the electric heating wire is wound on the outer side of the inner shell; the two discharge ports are symmetrically arranged at the lower ends of the inner shell and the outer shell; the lower end of the shaft I is movably connected to the inner bottom end of the inner shell through a bearing, and the upper end of the shaft I is fixedly connected with a stirring device II; the lower end of the shaft II is fixedly connected to the stirring device II, and the upper end of the shaft II is connected to an output shaft of the motor I; the upper baffle is in sliding fit with the upper shell, and an output shaft of the motor I penetrates through the center of the upper baffle; part of the stirring device II penetrates through the upper baffle; the motor I is fixedly connected to the inside of the upper shell through a motor bracket I; two ventilation holes are symmetrically formed in the side face of the upper shell; the stirring devices I are respectively and fixedly connected to the side surfaces of the shaft I and the shaft II; the central lines of the shaft I and the shaft II are overlapped.
The invention relates to a preparation method of multifunctional asphalt concrete, which comprises the following steps:
1) firstly, adding 2.2 percent of SBS modifier into 84.3 percent of AH-90 asphalt, fully swelling for 45 minutes, and shearing by a colloid mill;
2) then adding 10% of rubber powder and 3% of rubber filling oil, shearing by a colloid mill for 2 times, entering a storage tank for full reaction, keeping the reaction temperature at 180-190 ℃, and adding 0.5% of deodorant at the same time when the reaction is started to produce environment-friendly composite modified rubber asphalt;
3) adding an oily warm mixing agent into the environment-friendly composite modified rubber asphalt obtained in the step two, fully and uniformly stirring, and reducing the holding temperature of 1.5 Pa.S of the asphalt from 185 ℃ to 165 ℃ to finish the pretreatment work of the environment-friendly composite modified rubber asphalt;
4) firstly, putting broken stone into an inner shell through a feed hopper, then heating to 185-190 ℃ through an electric heating wire, then adding the added broken stone and polyester fiber, and then stirring the mixture for 6-12s through a stirring device I and a stirring device II;
5) uniformly mixing, adding 5.8-6.2% of the environment-friendly composite modified rubber asphalt obtained in the step two, controlling the heating temperature at 180-185 ℃, and then stirring the mixture for 10s by using a stirring device I and a stirring device II;
6) adding 5.8-6.2% of an anti-freezing material, controlling the mixing temperature to be 185-190 ℃, stirring and mixing through a stirring device I and a stirring device II, forming a composite modified asphalt mixture after 28-32 seconds, and discharging through a discharge hole.
Compared with the prior art, the invention has the beneficial effects that:
1. the stirring device I and the stirring device II are matched for use, so that the purpose of more thorough stirring is achieved.
2. The bridge deck asphalt concrete with the functions of skid resistance and noise reduction is formed by adopting high-viscosity high-elasticity environment-friendly composite modified rubber asphalt and multi-crushed stone gradation.
3. The oily warm-mixing agent is adopted to reduce the construction temperature of the high-viscosity high-elasticity environment-friendly composite modified rubber asphalt, and the mixture can still keep good construction characteristics under the condition that the external temperature of a cold area and the temperature of the mixture per se are reduced quickly.
4. An anti-freezing material is adopted to replace mineral powder to be added into the asphalt mixture, so that the high-performance asphalt concrete capable of autonomously deicing and melting snow is formed.
Drawings
FIG. 1 is a front view of a multifunctional asphalt concrete preparing apparatus according to the present invention;
FIG. 2 is a front view of a mixer I of the multifunctional asphalt concrete preparing apparatus according to the present invention;
FIG. 3 is a front view of a connecting rod of the multifunctional asphalt concrete preparing apparatus according to the present invention;
FIG. 4 is a side view of a circular ring of the multifunctional asphalt concrete preparing apparatus according to the present invention;
FIG. 5 is a front view of a mixing device II of the multifunctional asphalt concrete preparing apparatus according to the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
The first embodiment is as follows: as shown in fig. 1 to 5, the present embodiment describes a multifunctional asphalt concrete preparation apparatus, which includes an upper casing 1, an outer casing 4, two ventilation windows 5, and two brackets 7; the upper shell 1 is fixedly connected to the upper end of the outer shell 4; the two ventilation windows 5 are symmetrical and movably connected to the side surface of the outer shell 4; the two brackets 7 are fixedly connected to the lower end of the side surface of the outer shell 4; the multifunctional asphalt concrete preparation device further comprises two feed hoppers 3, an electric heating wire 6, an inner shell 8, a plurality of stirring devices I9, two discharge ports 10, a shaft I11, a stirring device II 12, a shaft II 13, an upper baffle 14, a motor I15 and a motor support I16; the inner shell 8 is fixedly connected with the lower end of the upper shell 1, the inner shell 8 is positioned in the outer shell 4, and a feed inlet is formed in the side surface of the inner shell 8; the two feed hoppers 3 respectively penetrate through the outer shell 4 and are fixedly connected to the side surface of the inner shell 8 and communicated with the feed inlet on the inner shell 8; the electric heating wire 6 is wound on the outer side of the inner shell 8; the two discharge ports 10 are symmetrically arranged at the lower ends of the inner shell 8 and the outer shell 4; the lower end of the shaft I11 is movably connected to the inner bottom end of the inner shell 8 through a bearing, and the upper end of the shaft I11 is fixedly connected with a stirring device II 12; the lower end of the shaft II 13 is fixedly connected to the stirring device II 12, and the upper end of the shaft II 13 is connected to an output shaft of the motor I15; the upper baffle plate 14 is in sliding fit with the upper shell 1, and an output shaft of the motor I15 penetrates through the center of the upper baffle plate 14; part of the stirring device II 12 penetrates through the upper baffle 14; the motor I15 is fixedly connected to the inside of the upper shell 1 through a motor bracket I16; two ventilation holes 2 are symmetrically formed in the side face of the upper shell 1; the stirring devices I9 are fixedly connected to the side faces of the shaft I11 and the shaft II 13 respectively; the central lines of the shafts I11 and II 13 are superposed. The ventilation window 5 is convenient to use when reducing the temperature in the inner shell body 8, and the ventilation holes 2 are used for reducing the temperature of the motor I15 and the motor II 12-1 during working.
The second embodiment is as follows: as shown in fig. 1 to 5, the present embodiment is further described as a first embodiment, and the stirring device ii 12 is obliquely disposed inside the inner casing 8. In order to increase the contact area between the cylinder 12-3 and the material to be stirred and accelerate the efficiency of moving the material in a large range, thereby achieving the aim of accelerating the stirring efficiency.
The third concrete implementation mode: as shown in fig. 2 to 4, this embodiment is further described as a first embodiment, and each of the stirring devices i 9 includes a plurality of connecting rods 9-1, a plurality of circular rings 9-2, and a plurality of stirring rods 9-3; two ends of each connecting rod 9-1 are provided with annular grooves, and each connecting rod 9-1 is fixedly connected with each other; each circular ring 9-2 is in running fit with an annular groove between the joints of the two connecting rods 9-1; one ends of the stirring rods 9-3 are respectively and fixedly connected with the side surfaces of the connecting rods 9-1 and the circular rings 9-2; one end of one of the connecting rods 9-1 is fixedly connected to the side face of the shaft I11 or the shaft II 13. A gap of 1cm is reserved between the circular ring 9-2 and the connecting rod 9-1, when the connecting rod 9-1 moves to drive the circular ring 9-2 to move, if one stirring rod 9-3 on the circular ring 9-2 is stressed or the stress of the two stirring rods 9-3 is different, the circular ring 9-2 rotates around the connecting rod 9-1, if the two stirring rods 9-3 on the circular ring 9-2 are subjected to the same external force, the circular ring 9-2 does not rotate and pushes materials to move through the stirring rods 9-3, irregular stirring is achieved, and then the effect of full stirring is achieved better.
The fourth concrete implementation mode: as shown in fig. 2-4, the present embodiment is further described with respect to the first embodiment, and the gap between each ring 9-2 and the annular groove between the two connecting rods 9-1 is 1 cm.
The fifth concrete implementation mode: as shown in FIG. 5, the present embodiment is further described with respect to the first embodiment, in which the stirring device II 12 includes a motor II 12-1, a motor support II 12-2, a cylinder 12-3, a shaft III 12-5, and a spiral plate 12-6; the bottom surface of the cylinder 12-3 is hollow, and a plurality of holes 12-4 penetrating through the side wall of the cylinder 12-3 are formed in the side wall of the cylinder 12-3; one end of the motor bracket II 12-2 is fixedly connected to the upper end of the top surface of the cylinder 12-3; the motor II 12-1 is fixedly connected to the motor support II 12-2, and an output shaft of the motor II 12-1 penetrates through the top surface of the cylinder 12-3; one end of the shaft III 12-5 is fixedly connected to an output shaft of the motor II 12-1; the spiral plate 12-6 is fixedly connected to the side face of the shaft III 12-5; the shaft I11 and the shaft II 13 are fixedly connected to the side face of the cylinder 12-3; a gap is reserved between the bottom surface of the cylinder 12-3 and the bottom surface of the inner shell 8; the shaft I11 and the shaft II 13 are fixedly connected with the cylinder 12-3. The cylinder 12-3 is obliquely arranged in the inner shell 8, a plurality of holes 12-4 are formed in the cylinder 12-3, when the cylinder 12-3 rotates, materials enter the cylinder 12-3 through the holes 12-4, then the motor II 12-1 drives the shaft III 12-5 to rotate, the shaft III 12-5 drives the spiral plate 12-6 to move, and the spiral plate 12-6 pushes the materials entering the cylinder 12-3 into the inner shell 8 again through the hollow end at the bottom of the cylinder 12-3, so that the materials are moved in a large range.
The sixth specific implementation mode: as shown in FIG. 5, this embodiment is further described with respect to the first embodiment, the cylinder 12-3 passes through the upper baffle 14, and the motor II 12-1 is located in the upper housing 1. The heat dissipation of the motor II 12-1 is facilitated.
The seventh embodiment: as shown in FIGS. 1-5, this embodiment is further described with respect to the first embodiment, wherein the included angles between the axes I11 and II 13 and the cylinder 12-3 are less than 45 degrees.
The specific implementation mode is eight: the embodiment describes a preparation method of multifunctional asphalt concrete, which comprises the following steps:
1) firstly, adding 2.2 percent of SBS modifier into 84.3 percent of AH-90 asphalt, fully swelling for 45 minutes, and shearing by a colloid mill;
2) then adding 10% of rubber powder and 3% of rubber filling oil, shearing by a colloid mill for 2 times, entering a storage tank for full reaction, keeping the reaction temperature at 180-190 ℃, and adding 0.5% of deodorant at the same time when the reaction is started to produce environment-friendly composite modified rubber asphalt;
3) adding an oily warm mixing agent into the environment-friendly composite modified rubber asphalt obtained in the step two, fully and uniformly stirring, and reducing the holding temperature of 1.5 Pa.S of the asphalt from 185 ℃ to 165 ℃ to finish the pretreatment work of the environment-friendly composite modified rubber asphalt;
4) firstly, 90-94% of crushed stone is put into an inner shell 8 through a feed hopper 3, then the crushed stone is heated to 185-190 ℃ through an electric heating wire 6, then 0.225-0.4% of polyester fiber is added, and then the mixture is stirred for 6-12s through a stirring device I9 and a stirring device II 12;
5) uniformly mixing, adding 5.8-6.2% of the environment-friendly composite modified rubber asphalt obtained in the step two, controlling the heating temperature at 180-185 ℃, and stirring the mixture for 10s by using a stirring device I9 and a stirring device II 12;
6) adding 5.8-6.2% of an anti-freezing material, controlling the mixing temperature to be 185-190 ℃, stirring and mixing through a stirring device I9 and a stirring device II 12, forming a composite modified asphalt mixture after 28-32 seconds, and then discharging through a discharge hole 10.
The specific implementation method nine: the embodiment is further explained for the specific embodiment eight, and the adding amount of the oily warm-mixing agent in the step 3 is 0.3-0.6% of the weight of the environment-friendly composite modified rubber asphalt.
The detailed implementation mode is ten: this embodiment is further described with respect to the eighth embodiment, in which the anti-freezing material in step 6 is composed of an inorganic halide or an organic polyol-based compound, the freezing point of the anti-freezing material is between-5 ℃ and-25 ℃, and the inorganic halide includes sodium fluoride, calcium chloride, and sodium chloride; the organic polyol compound comprises calcium acetate, magnesium acetate and potassium acetate.
The working principle of the invention is as follows: when the device is used for manufacturing, crushed stone is put into the inner shell 8 through the feed hopper 3, then is heated to 185-190 ℃ through the electric heating wire 6, then polyester fiber is added, and then the mixture is stirred through the stirring device I9 and the stirring device II 12; when the stirring device I9 is used, the motor I15 drives the shaft II 13 to rotate, the shaft II 13 drives the cylinder 12-3 to move, the cylinder 12-3 drives the shaft I11 at the lower end of the cylinder to rotate, the shaft I11 and the shaft II 13 drive the stirring device I9 at the side of the cylinder to move, materials in the device are stirred, in the process that the stirring device I9 rotates around the shaft I11 and the shaft II 13, one part of the stirring rods 9-3 and the connecting rod 9-1 push part of the materials to move, because the other part of the stirring rods 9-3 are connected to the ring 9-2, a gap of 1cm is reserved between the ring 9-2 and the connecting rod 9-1, when the connecting rod 9-1 moves to drive the ring 9-2, if one stirring rod 9-3 on the ring 9-2 is stressed or the two stirring rods 9-3 are stressed differently, the circular ring 9-2 rotates around the connecting rod 9-1, if the two stirring rods 9-3 on the circular ring 9-2 are subjected to the same external force, the circular ring 9-2 does not rotate and the stirring rods 9-3 push the materials to move, so that irregular stirring is realized, and the effect of full stirring is better achieved; when the stirring device II 12 is used, the motor I15 drives the shaft II 13 to rotate, the shaft II 13 drives the cylinder 12-3 to move, the cylinder 12-3 drives the shaft I11 at the lower end of the cylinder to rotate, meanwhile, the cylinder 12-3 is obliquely arranged in the inner shell 8, a plurality of holes 12-4 are formed in the cylinder 12-3, when the cylinder 12-3 rotates, materials enter the cylinder 12-3 through the holes 12-4, then the motor II 12-1 drives the shaft III 12-5 to rotate, the shaft III 12-5 drives the spiral plate 12-6 to move, the spiral plate 12-6 pushes the materials entering the cylinder 12-3 into the inner shell 8 again through the hollow end at the bottom of the cylinder 12-3, the materials are moved in a large range, the stirring device I9 and the stirring device II 12 are matched for better mixing the materials, after the materials are stirred, the materials are discharged through the discharging port 10.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other forms of embodiments without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A multifunctional asphalt concrete preparation device comprises an upper shell (1), an outer shell (4), two ventilation windows (5) and two brackets (7); the upper shell (1) is fixedly connected to the upper end of the outer shell (4); the two ventilation windows (5) are symmetrical and movably connected to the side surface of the outer shell (4); the two brackets (7) are fixedly connected to the lower end of the side face of the outer shell (4); the method is characterized in that: the multifunctional asphalt concrete preparation device also comprises two feed hoppers (3), electric heating wires (6), an inner shell (8), a plurality of stirring devices I (9), two discharge ports (10), a shaft I (11), a stirring device II (12), a shaft II (13), an upper baffle plate (14), a motor I (15) and a motor support I (16); the inner shell (8) is fixedly connected to the lower end of the upper shell (1), the inner shell (8) is positioned in the outer shell (4), and a feeding hole is formed in the side surface of the inner shell (8); the two feed hoppers (3) respectively penetrate through the outer shell (4) and are fixedly connected to the side surface of the inner shell (8) and communicated with the feed inlet on the inner shell (8); the electric heating wire (6) is wound on the outer side of the inner shell (8); the two discharge ports (10) are symmetrically arranged at the lower ends of the inner shell (8) and the outer shell (4); the lower end of the shaft I (11) is movably connected to the inner bottom end of the inner shell (8) through a bearing, and the upper end of the shaft I (11) is fixedly connected with a stirring device II (12); the lower end of the shaft II (13) is fixedly connected to the stirring device II (12), and the upper end of the shaft II (13) is connected to the output shaft of the motor I (15); the upper baffle (14) is in sliding fit with the upper shell (1), and an output shaft of the motor I (15) penetrates through the center of the upper baffle (14); part of the stirring device II (12) penetrates through the upper baffle (14); the motor I (15) is fixedly connected to the inside of the upper shell (1) through a motor support I (16); two ventilation holes (2) are symmetrically formed in the side face of the upper shell (1); the stirring devices I (9) are respectively and fixedly connected to the side faces of the shaft I (11) and the shaft II (13); the central lines of the shaft I (11) and the shaft II (13) are overlapped.
2. The multifunctional asphalt concrete preparation device according to claim 1, wherein: and the stirring device II (12) is obliquely arranged in the inner shell (8).
3. The multifunctional asphalt concrete preparation device according to claim 1, wherein: each stirring device I (9) comprises a plurality of connecting rods (9-1), a plurality of circular rings (9-2) and a plurality of stirring rods (9-3); two ends of each connecting rod (9-1) are provided with annular grooves, and each connecting rod (9-1) is fixedly connected with each other; each circular ring (9-2) is in running fit with an annular groove between the joints of the two connecting rods (9-1); one end of each stirring rod (9-3) is fixedly connected to the side surfaces of the connecting rods (9-1) and the circular rings (9-2) respectively; one end of one connecting rod (9-1) is fixedly connected to the side face of the shaft I (11) or the shaft II (13).
4. The multifunctional asphalt concrete preparation device according to claim 3, wherein: the gap between the annular grooves between the joints of the circular rings (9-2) and the two connecting rods (9-1) is 1 cm.
5. The multifunctional asphalt concrete preparation device according to claim 3, wherein: the stirring device II (12) comprises a motor II (12-1), a motor support II (12-2), a cylinder (12-3), a shaft III (12-5) and a spiral plate (12-6); the bottom surface of the cylinder (12-3) is hollow, and a plurality of holes (12-4) penetrating through the side wall of the cylinder (12-3) are formed in the side wall of the cylinder (12-3); one end of the motor bracket II (12-2) is fixedly connected to the upper end of the top surface of the cylinder (12-3); the motor II (12-1) is fixedly connected to the motor support II (12-2), and an output shaft of the motor II (12-1) penetrates through the top surface of the cylinder (12-3); one end of the shaft III (12-5) is fixedly connected to an output shaft of the motor II (12-1); the spiral plate (12-6) is fixedly connected to the side surface of the shaft III (12-5); the shaft I (11) and the shaft II (13) are fixedly connected to the side face of the cylinder (12-3); a gap is reserved between the bottom surface of the cylinder (12-3) and the bottom surface of the inner shell (8); the shaft I (11) and the shaft II (13) are fixedly connected with the cylinder (12-3).
6. The multifunctional asphalt concrete preparation device according to claim 5, wherein: the cylinder (12-3) penetrates through the upper baffle (14), and the motor II (12-1) is located in the upper shell (1).
7. The multifunctional asphalt concrete preparation device according to claim 5, wherein: the included angles between the shaft I (11), the shaft II (13) and the cylinder (12-3) are all smaller than 45 degrees.
8. The method for preparing a multifunctional asphalt concrete according to any one of claims 1 to 7, wherein the method comprises the following steps: the method comprises the following steps:
1) firstly, adding 2.2 percent of SBS modifier into 84.3 percent of AH-90 asphalt, fully swelling for 45 minutes, and shearing by a colloid mill;
2) then adding 10% of rubber powder and 3% of rubber filling oil, shearing by a colloid mill for 2 times, entering a storage tank for full reaction, keeping the reaction temperature at 180-190 ℃, and adding 0.5% of deodorant at the same time when the reaction is started to produce environment-friendly composite modified rubber asphalt;
3) adding an oily warm mixing agent into the environment-friendly composite modified rubber asphalt obtained in the step two, fully and uniformly stirring, and reducing the holding temperature of 1.5 Pa.S of the asphalt from 185 ℃ to 165 ℃ to finish the pretreatment work of the environment-friendly composite modified rubber asphalt;
4) firstly, 90-94% of broken stone is put into an inner shell (8) through a feed hopper (3), then the broken stone is heated to 185-190 ℃ through an electric heating wire (6), then 0.225-0.4% of polyester fiber is added, and then the mixture is stirred for 6-12s through a stirring device I (9) and a stirring device II (12);
5) uniformly mixing, adding 5.8-6.2% of the environment-friendly composite modified rubber asphalt obtained in the step two, controlling the heating temperature at 180-185 ℃, and then stirring the mixture for 10s through a stirring device I (9) and a stirring device II (12);
6) 5.8 to 6.2 percent of anti-freezing material is added, the mixing temperature is controlled to be 185 to 190 ℃, the mixture is stirred and mixed by a stirring device I (9) and a stirring device II (12), a composite modified asphalt mixture is formed after 28 to 32 seconds, and then the mixture is discharged through a discharge hole (10).
9. The method for preparing multifunctional asphalt concrete according to claim 8, wherein the method comprises the following steps: in the step 3, the addition amount of the oily warm-mixing agent is 0.3-0.6% of the weight of the environment-friendly composite modified rubber asphalt.
10. The method for preparing multifunctional asphalt concrete according to claim 8, wherein the method comprises the following steps: the anti-freezing material in the step 6 is composed of inorganic halide or organic polyol compound.
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