CN111236006B - Asphalt pavement aggregate separation and regeneration equipment and separation method - Google Patents
Asphalt pavement aggregate separation and regeneration equipment and separation method Download PDFInfo
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- CN111236006B CN111236006B CN202010208496.7A CN202010208496A CN111236006B CN 111236006 B CN111236006 B CN 111236006B CN 202010208496 A CN202010208496 A CN 202010208496A CN 111236006 B CN111236006 B CN 111236006B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 75
- 238000000926 separation method Methods 0.000 title claims abstract description 38
- 230000008929 regeneration Effects 0.000 title claims abstract description 20
- 238000011069 regeneration method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000012535 impurity Substances 0.000 claims abstract description 66
- 238000004140 cleaning Methods 0.000 claims abstract description 43
- 238000012216 screening Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 15
- 239000002699 waste material Substances 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 11
- 239000012634 fragment Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 5
- 239000002341 toxic gas Substances 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 7
- 210000001503 joint Anatomy 0.000 abstract description 6
- 238000007873 sieving Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 10
- 239000011148 porous material Substances 0.000 description 9
- 238000007599 discharging Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012492 regenerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
- E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof
-
- 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
- E01C19/08—Apparatus for transporting and heating or melting asphalt, bitumen, tar, or the like
-
- 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
- E01C19/1045—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers the mixture being discharged continuously
-
- 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
- E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
- E01C19/1068—Supplying or proportioning the ingredients
- E01C19/1072—Supplying or proportioning the ingredients the solid ingredients
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
- Road Repair (AREA)
Abstract
The invention discloses asphalt pavement aggregate separation and regeneration equipment and a separation method, wherein the asphalt pavement aggregate separation and regeneration equipment comprises a feed inlet, a crushing and separation mechanism, an aggregate cleaning box and a collecting box, the crushing and separation mechanism comprises an inner cylinder and an outer cylinder, a microwave heating device is arranged in the outer cylinder, a plurality of layers of multi-stage screening discs are arranged in the inner cylinder, a plurality of stirring and crushing blades are connected between each stage of screening discs, the top of the crushing and separation mechanism is connected with the feed inlet, the bottom of the crushing and separation mechanism is in butt joint with the aggregate cleaning box, the bottom of the box is provided with a discharge hole baffle supported by a clamping rod, the bottom of the water tank is provided with a water outlet and a circulating water system communicated with an impurity filtering cylinder, and the collecting box is arranged on one side of the water tank and is in butt joint with the discharge hole baffle. The equipment uses microwave heating to complete aggregate separation, remove residual impurities and broken small aggregate residues, and ensure the efficient and high-quality recycling of the aggregates. The separated aggregate can be reused for road construction, thereby realizing the maximum utilization of resources. The method has simple flow and higher efficiency, and is suitable for the regeneration and road construction mechanized operation of the old asphalt pavement.
Description
Technical Field
The invention relates to the field of waste treatment, in particular to the field of asphalt pavement aggregate separation and regeneration, and specifically relates to asphalt pavement aggregate separation and regeneration equipment.
Background
Along with the acceleration of industrialization development, the traffic of people is increasingly convenient, so that the number of roads in China is continuously increased, and asphalt pavements are the main types of road pavements. However, due to the repeated load of the vehicle, overload of the vehicle, road construction, and arrival of service life, the asphalt pavement cannot be used continuously, so that a large amount of construction waste is generated. How to dispose of asphalt pavement waste would be a problem that must be faced and addressed. Besides, a large amount of aggregate is needed for constructing a new road, natural resources are limited except economic factors, unlimited exploitation is not realized, and a large amount of mineral aggregate can be saved by recycling the aggregate of the old asphalt pavement, so that the recycling of the aggregate of the old asphalt pavement has very important practical significance from the perspective of green energy conservation and environmental protection.
The existing asphalt pavement regeneration multi-finger old asphalt pavement which cannot meet the pavement performance requirement is milled or dug to recover old asphalt mixture, then a certain amount of regenerant, additive, new aggregate, new asphalt and other materials are added for mixing, and the asphalt mixture is applied to the road construction technology again. However, the method has a large amount of asphalt and impurities on the re-built pavement, greatly reduces the practical life of the regenerated pavement, and does not recycle the waste asphalt pavement after being broken. Therefore, the efficient recycling of the waste asphalt pavement aggregate has important practical significance.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide equipment for separating the asphalt pavement aggregates, which utilizes microwave heating to achieve the requirements of rapid heating and complete separation, removes residual impurities and broken small aggregate residues, solves the problem of stacking the existing waste asphalt pavement garbage, realizes the efficient recycling of the waste asphalt pavement aggregates, and is green, energy-saving and environment-friendly.
The invention is realized by the following technical scheme.
An asphalt pavement aggregate separation and regeneration device comprises a feed inlet, a crushing and separation mechanism, an aggregate cleaning box and a collecting box;
the crushing and separating mechanism is an inner concentric cylinder and an outer concentric cylinder which are nested, and a microwave heating device is arranged in the outer cylinder;
the top of the crushing and separating mechanism is connected with a feed inlet, the bottom is in butt joint with an aggregate cleaning box;
The aggregate cleaning box is provided with a bottomless impurity filtering cylinder, a high-pressure water spray head and a water baffle, the bottom of the impurity filtering cylinder is provided with a discharge port baffle supported by a clamping rod, the bottom of the clamping rod is hinged on the water tank, the bottom of the water tank is provided with a water outlet and a circulating water system communicated with the impurity filtering cylinder, and the aggregate collecting box is arranged on one side of the water tank and is in butt joint with the discharge port baffle.
For the above technical solution, the present invention is further preferred:
preferably, the plurality of microwave heating devices are circumferentially arranged along the inner wall of the outer cylinder and are distributed on the inner wall of the outer cylinder at intervals from top to bottom.
Preferably, a plurality of stirring crushing blades are arranged between the sieving plates with smooth surfaces of each stage according to a cross shape, and the stirring crushing blades are connected to the upper sieving plate and the lower sieving plate through sleeves.
Preferably, a hole is formed in the side wall of the inner cylinder, and an exhaust gas outlet and an impurity receiving ring groove are formed between the inner cylinder and the outer cylinder.
Preferably, the sieve pore diameters of the sieving plates with different pore diameters are sequentially reduced from top to bottom, and the pore diameters are respectively 38-52 mm, 19-26 mm and 9.5-13 mm.
Preferably, a funnel-shaped receiving port is arranged at the upper part of the aggregate cleaning box;
Preferably, the aggregate washs the case and passes through the support to be supported, and aggregate washs the case bottom and is equipped with a radius slightly more than the ring of impurity cartridge filter, and the ring below is equipped with an annular rail, and high-pressure sprinkler bead and breakwater are located on the annular rail relatively respectively.
Preferably, one end of the discharge port baffle is hinged to the barrel bottom of the impurity filter barrel, the discharge port baffle comprises a spherical crown bottom and a plane plate section, the spherical crown bottom corresponds to the round bottom surface of the impurity filter barrel, a buckle in butt joint with a clamping rod is arranged at the bottom of the plane plate section, and the bottom of the clamping rod is hinged through a hinge arranged on the water tank.
Preferably, an impurity storage box is arranged in the water tank, and a lower bottom plate of the impurity storage box comprises sieve holes.
Preferably, a hemispherical filter screen is arranged at the water inlet of the circulating water system communicated with the bottom of the water tank.
Correspondingly, the invention further provides a method for separating and regenerating the asphalt pavement aggregate, which comprises the following steps:
s101, enabling waste asphalt pavement to enter a crushing and separating mechanism through a feed inlet;
S102, starting the microwave heating device, driving a multistage screening disc (204) to rotate by a motor at the rotating speed of 8-14r/min, separating heated and destroyed asphalt pavement aggregates into fragments, sequentially dropping the fragments onto a secondary screening disc through screening disc holes at different levels with different apertures, heating the asphalt pavement aggregates through the microwave heating devices at different levels, stirring and breaking blades, destroying the asphalt pavement aggregates, dropping the asphalt pavement aggregates onto a bottom layer screening hole of a breaking and separating mechanism, and entering an aggregate cleaning box;
s103, discharging toxic gas generated by heating asphalt through an exhaust gas outlet;
S104, enabling crushed and separated asphalt pavement aggregates to enter an impurity filter cartridge, and cleaning by annular water spraying through a plurality of high-pressure water spray heads;
s105, after cleaning is completed, after enough asphalt pavement aggregates are contained in the impurity filtering cylinder, the spherical crown of the discharge port baffle plate is pressed down to deform, the plane plate section is tilted upwards, the clamping rods are separated from the clamping buckles, the discharge port baffle plate hinged on the impurity filtering cylinder is turned downwards, and the asphalt pavement aggregates slide into the material collecting box along the discharge port baffle plate;
s106, the asphalt pavement impurities fall into an impurity storage box and are removed;
And S107, filtering the cleaned wastewater by a hemispherical filter screen, and communicating the filtered wastewater to a high-pressure water spray head of an impurity filter cartridge by a circulating water system for recycling.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
The invention uses a microwave rapid integral heating mode to rapidly separate the waste asphalt pavement fragments without damaging the strength of the aggregate, screens out the aggregate and the impurity, further removes the residual impurity and the broken small aggregate slag, and the screening disc and the breaking blade are detachable, and the different sieve holes of the multi-stage screening disc are arranged, so that the waste pavement aggregates with different grades can be separated step by step, and the high-efficiency and high-quality recycling of the aggregates is ensured. The separated aggregate can be used for road construction again, so that the road garbage is reduced, and the maximum utilization of resources is realized. The equipment has simple flow and higher efficiency, and can be used for flow production and large-scale use. The device has high efficiency, can be widely used for the regeneration and road construction mechanized operation of the old asphalt pavement.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this specification, are incorporated in and constitute a part of this specification and do not limit the application in any way, and in which:
FIG. 1 is a schematic diagram of the overall apparatus of the present invention;
FIG. 2 is a top view of a screen tray of the screening mechanism;
FIG. 3 is a top plan view of the upper half of the aggregate cleaning mechanism in cross section;
In the figure, 1-feeding port, 2-crushing separating mechanism, 3-aggregate cleaning box, 4-collecting box, 201-outer barrel, 202-inner barrel, 203-microwave heating device, 204-screening disc, 205-stirring crushing blade, 206-sleeve cap, 207-impurity receiving ring groove, 208-main shaft, 208' -hexagonal sleeve cap, 209-exhaust gas exhaust port, 210-motor shell, 211-sieve, 212-motor, 301-impurity filtering barrel, 302-baffle, 303-funnel-shaped receiving port, 304-circulating water pipe, 305-water outlet, 306-high-pressure water spray head, 307-impurity storage box, 308-water tank, 309-discharge port baffle, 310-hemispherical filter screen, 311-circulating water system, 312-circular ring, 313-circular track, 314-buckle, 315-hinge, 316-clamping rod.
Detailed Description
The present invention will now be described in detail with reference to the drawings and the specific embodiments thereof, wherein the exemplary embodiments and descriptions of the present invention are provided for illustration of the invention and are not intended to be limiting.
The asphalt pavement aggregate recycling equipment comprises a feed inlet 1, a crushing and separating mechanism 2, an aggregate cleaning box 3 and a collecting box 4. The feeding port 1 is connected with the crushing and separating mechanism 2, and the crushing and separating mechanism 2 realizes the heating and separating of the old asphalt pavement fragments. The aggregate cleaning box 3 is connected to the lower part of the crushing and separating mechanism 2, and aggregates at the separating opening are discharged from the discharging opening after being cleaned and decontaminated by the aggregate cleaning box, so that the separating and cleaning work is completed.
The equipment carries out aggregate separation treatment on the waste old asphalt crushed pavement. The interior of the separation device 2 is provided with a microwave heating device and a stirring device, so that the rapid overall heating of the asphalt pavement aggregate is realized, and the aggregate is completely separated and is not adhered. The aged and coked asphalt residues, aggregate scraps and the like are discharged from the sieve holes and are collected into an impurity annular groove or an impurity storage box. After separation, the asphalt pavement aggregates fall into an aggregate cleaning cylinder 3 from a last stage screening disc of the separation device and are used for cleaning impurities such as coked and aged asphalt adhered to the aggregates. And after the cleaning is finished, the aggregate is discharged from the discharge hole.
As shown in fig. 1, the crushing and separating mechanism is provided with an inner concentric cylinder and an outer concentric cylinder, the outer cylinder 201 is an integral shell of the crushing and separating mechanism, the inner wall of the outer cylinder is provided with a plurality of microwave heating devices 203, and the microwave heating devices are circumferentially arranged along the inner wall of the outer cylinder and are distributed on the inner wall of the outer cylinder from top to bottom at intervals. An exhaust gas outlet 209 and an impurity receiving ring groove 207 are arranged between the inner cylinder 202 and the outer cylinder 201, and the exhaust gas outlet 209 is arranged at the top part for absorbing and treating toxic gas generated in the heating process. The impurity receiving ring groove 207 is provided at the bottom for receiving impurities such as burnt asphalt and broken aggregate slag from the mesh holes 211 of the inner cylinder 202. The inner cylinder 202 is a filtering separator, holes are formed in the periphery of the inner cylinder, multiple stages of screening discs 204 which are coaxially connected through a motor 212 and have different pore diameters and are detachable are arranged in the inner cylinder, the surfaces of the multiple stages of screening discs 204 are smooth enough, the pore diameters of the sieve pores 211 of the multiple stages of screening discs 204 are sequentially reduced from top to bottom, a plurality of stirring crushing blades 205 are connected between the multiple stages of screening discs, as shown in fig. 2, the stirring crushing blades 205 are arranged between the multiple stages of screening discs according to a cross shape, and the stirring crushing blades 205 are connected to the upper screening disc and the lower screening disc through caps 206.
The upper side of the crushing and separating mechanism is connected with a feed inlet 1, receives materials from the feed inlet, completes the separation requirement of the adhesion aggregate through microwave heating, and prevents the emission of harmful gases.
The bottom of the crushing and separating mechanism is in butt joint with the aggregate cleaning box 3, and a funnel-shaped receiving port 303 is arranged at the upper part of the aggregate cleaning box 3, so that the aggregate cleaning cylinder 3 can fully receive aggregates and impurities from the crushing and separating mechanism 2. The motor 212 is fixed by a motor housing 210, the motor housing 210 is made of a high-temperature-resistant waterproof material, and the upper top surface of the motor housing 210 is of a spherical crown structure, so that aggregates or impurities falling on the housing slide into the cleaning box 3 below.
The aggregate cleaning tank 3 is supported by a bracket, and the aggregate cleaning tank 3 is provided with a bottomless impurity filter cartridge 301, a high-pressure water spray head 306, a water baffle 302, a circulating water system 311 and the like. As shown in fig. 3, a circular ring 312 with a radius slightly larger than that of the impurity filtering cylinder 301 is arranged at the bottom of the aggregate cleaning box 3, an annular track 313 is arranged below the circular ring 312, a high-pressure water spray head 306 is arranged on one side of the annular track 313, a water baffle plate 302 is arranged on the other side of the annular track 313, and the water baffle plate 302 and a mounting strip for mounting the high-pressure water spray head 306 are fixedly connected to the circular ring 312 with a concentric circle center with the impurity filtering cylinder 301. The water baffle 302 is a fan-shaped baffle with a central angle of 120 degrees, and can completely shield water sprayed out from the opposite side of the high-pressure water head 306 after cleaning aggregate impurities. The circular ring 312 can rotate along the annular track 313, the water baffle 302 is opposite to the strip-shaped high-pressure water spraying head 306, and the high-pressure water spraying head 306 and the water baffle 302 are driven to rotate together, so that the cleaning of aggregate and the discharge of aggregate at a discharge port are facilitated. The high-pressure sprinkler head 306 is used for cleaning the surface of the separated aggregate from the impurities, and filtering the waste materials such as burnt asphalt, crushed aggregate and the like.
The upper half part of the water tank 308 of the aggregate cleaning tank 3 is provided with a push-pull impurity storage tank 307, which is convenient for discharging and cleaning impurities. The lower floor of the impurity storage tank 307 contains mesh openings to facilitate water recovery and entry into the water circulation system 311. The water tank 308 is communicated with the water circulation system 311 through the circulating water pipe 304, and a hemispherical filter screen 310 with opposite water flow is arranged at the outlet of the water tank 308 and is used for preventing filtered impurities from entering the recirculated water to block the water flow pipeline and the spray head. A drain port 305 is also provided at the bottom of the water tank 308.
Wherein, all materials in the crushing and separating mechanism 2 are high temperature resistant, and the inner cylinder 202 is made of materials which can be penetrated by microwaves, and the outer cylinder 202 is isolated from microwaves and radiation-proof. The crushing and separating mechanism 2 is quickly heated by using the microwave heating device 203, has short time consumption and does not damage and damage aggregates to be recovered. A detachable impurity receiving ring groove 208 is arranged between the inner barrel 202 and the outer barrel 201 of the crushing and separating mechanism and is used for receiving impurities such as burnt asphalt and the like coming out of the sieve holes of the inner barrel 202. The power and time of the microwave adding device 203 corresponding to the screening space of each stage of the filter disc 204 can be respectively regulated and controlled, and different heating time and heating power can be respectively set for different fragment volumes, so that the energy saving and economy can be achieved to the greatest extent. The screen pore diameters in the screening tray 204 become smaller from top to bottom, and the screen pore diameter of the last screening tray is related to the grading diameter of the material, so that the complete separation of the material is ensured. The cap 206 on the tertiary screening tray 204 facilitates attachment and detachment of each screening tray to the agitator breaker blade. The main shaft 208 on the motor 212 drives the sieving discs 204 to rotate, so that stirring and crushing blades 205 are driven to move, and when stirring and crushing blades of all stages of sieving discs 204 rotate together with the main shaft 208 to stir, torsion damage of the rotating main shaft 208 can be relieved to a certain extent, and the main shaft 208 is movably connected with the sieving discs through hexagonal clamping sleeves 208', so that the sieving discs with different particle sizes can be conveniently detached and replaced.
Wherein, impurity cartridge filter 301's bottom is provided with discharge gate baffle 309, and discharge gate baffle 309 is articulated with water tank 308, can follow the rotatory switching of pin joint. The discharge port baffle 309 is formed by fixedly connecting a spherical crown and a plane plate section beyond the spherical crown bottom, the spherical crown bottom corresponds to the circular bottom surface of the filter cartridge, the discharge port baffle beyond the plane plate bottom comprises a buckle 314 butted with a clamping rod 316, and the other end of the clamping rod 316 is hinged through a hinge 315 arranged on the water tank 308. After the impurity filter cartridge contains enough aggregate, the spherical crown of the discharge port baffle 309 is pressed down to deform, and the spherical crown exceeds the upwarp of the plane plate, the clamping rod 316 is separated from the clamping buckle 314, the discharge port is opened, and the aggregate slides into the material collecting box 4 along the discharge port baffle 309.
In one embodiment, the screening tray 204 is three-stage, and the mesh aperture sizes of the screening tray 204 are set to be 38-52 mm, 19-26 mm and 9.5-13 mm in sequence.
The following provides a processing method adopting the device, which comprises the following steps:
s101, the waste asphalt pavement enters a crushing and separating mechanism 2 through a feed inlet 1;
S102, fragments are positioned on the upper side of a first-stage screening disc and cannot be filtered to a next-stage screening disc due to the fact that the particle size of the fragments is too large;
s103, the first-stage microwave heating device starts to work, and simultaneously, the motor drives the main shaft to start to rotate at the rotating speed of 8-14r/min to drive the sieving disc and the stirring crushing blade to rotate, so that the surface of the sieving disc is smooth enough, the heated pavement asphalt is damaged, the pavement asphalt is softened and loses viscosity, asphalt pavement aggregate is separated, fragments become small, and sieve pores of the first-stage sieving disc fall onto the second-stage sieving disc.
And S104, stirring the aggregate on the upper side of the secondary screening disc by a secondary microwave heater and a stirring crushing blade, and falling to the upper side of the tertiary screening disc.
And S105, the aggregate on the upper side of the three-stage screening disc is stirred by the three-stage microwave heater and the stirring crushing blade, and falls into the aggregate cleaning box after being completely separated. The toxic gas generated by heating the asphalt in steps S103 to S105 is exhausted from the exhaust gas outlet.
S106, after the separated stones enter the impurity filter cylinder of the aggregate cleaning box, the high-pressure water spray head starts to spray water in a circular way, the water baffle plate prevents water from splashing in the cleaning process, and the water splashed onto the water baffle plate is reserved in the aggregate cleaning box for recycling of the water. Note that the ring fixed by the water baffle and the high pressure water spraying head can rotate around the circle center on the annular track, so that the aggregate can be cleaned in a direction-changing manner if needed.
S107, after cleaning is completed, when enough asphalt pavement aggregates are contained in the impurity filtering cylinder, the spherical crown of the discharge port baffle plate is pressed downwards to deform, the plane plate section is tilted upwards, the clamping rods are separated from the clamping buckles, the discharge port baffle plate hinged on the impurity filtering cylinder is turned downwards, and the asphalt pavement aggregates slide into the material collecting box along the discharge port baffle plate;
s106, the asphalt pavement impurities fall into an impurity storage box and are removed;
and S107, filtering the cleaned wastewater by a hemispherical filter screen, and communicating the filtered wastewater to a high-pressure water spray head of an impurity filter cartridge (301) by a circulating water system for recycling.
Thereafter, if the aggregates are required to be separated according to the particle size, the sieving work of the coarse and fine aggregates can be completed by arranging a sieving net at the discharge port. The small amount of asphalt adhered to the surface of the cleaned aggregate does not affect the reuse of the aggregate.
The steps in the process are not affected, can be performed simultaneously, and can be used for mechanized production.
The invention is not a matter of the known technology.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010208496.7A CN111236006B (en) | 2020-03-23 | 2020-03-23 | Asphalt pavement aggregate separation and regeneration equipment and separation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010208496.7A CN111236006B (en) | 2020-03-23 | 2020-03-23 | Asphalt pavement aggregate separation and regeneration equipment and separation method |
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| CN111236006A CN111236006A (en) | 2020-06-05 |
| CN111236006B true CN111236006B (en) | 2025-03-07 |
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| CN113293672B (en) * | 2021-06-28 | 2022-05-31 | 杭州路顺环境建设有限公司 | Regeneration cycle production system based on old asphalt pavement materials and treatment method thereof |
| CN113832805B (en) * | 2021-09-06 | 2022-09-13 | 黄山路之梦交通工程有限责任公司 | Be used for road surface pitch waste recycling device |
| CN118166608B (en) * | 2024-03-18 | 2024-09-10 | 绍兴市城投工程材料科技有限公司 | Production process and mixing equipment for recycled asphalt concrete |
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| CN211772593U (en) * | 2020-03-23 | 2020-10-27 | 西安建筑科技大学 | Asphalt pavement aggregate separation regeneration device |
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| CN211772593U (en) * | 2020-03-23 | 2020-10-27 | 西安建筑科技大学 | Asphalt pavement aggregate separation regeneration device |
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