CN113215921A - Asphalt concrete reclaimed material recovery system and recovery method - Google Patents
Asphalt concrete reclaimed material recovery system and recovery method Download PDFInfo
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- CN113215921A CN113215921A CN202110315310.2A CN202110315310A CN113215921A CN 113215921 A CN113215921 A CN 113215921A CN 202110315310 A CN202110315310 A CN 202110315310A CN 113215921 A CN113215921 A CN 113215921A
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- asphalt concrete
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- stripping
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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
- E01C19/1004—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
Abstract
The invention discloses a system and a method for recovering recycled asphalt concrete materials, which comprises the following steps: a material storage module: the storage of asphalt concrete; a primary screening module: the method is used for primary screening of asphalt concrete; stripping the crushing module: the device is used for receiving the primarily screened asphalt concrete and stripping and crushing the asphalt concrete; a secondary screening module: the device is used for receiving the stripped and crushed asphalt concrete and carrying out secondary screening on the stripped and crushed asphalt concrete; the storage module, the primary screening module, the stripping and crushing module and the secondary screening module are integrally installed and connected, and the particle sizes of asphalt concrete screened by the primary screening module and the secondary screening module are sequentially reduced; the asphalt concrete reclaimed materials are quickly scattered through the stripping and crushing module, and part of asphalt on the surface of the asphalt concrete reclaimed materials is stripped, so that the aggregate of the asphalt concrete reclaimed materials is crushed, and the caking rate of the asphalt concrete reclaimed materials is reduced; asphalt concrete with different grain sizes can be obtained to meet different requirements.
Description
Technical Field
The invention relates to the field of asphalt concrete recovery processing, in particular to a system and a method for recovering asphalt concrete reclaimed materials.
Background
With the rapid development of asphalt pavement construction in China and the need of reconstruction and renovation of a large number of high-grade pavements, recycling of milling materials for old asphalt pavements has received high attention and extensive attention. The recycled asphalt concrete materials are agglomerated and blocky, and need to be screened and crushed before secondary utilization, so that the stable gradation of the raw materials is ensured. Although the existing asphalt concrete reclaimed material screening and crushing equipment can secondarily crush blocky and oversized materials, the agglomerated asphalt concrete reclaimed materials are not well scattered and crushed. The existing asphalt concrete reclaimed material screening and crushing equipment can solve a certain caking problem, but the caking rate in the screened and crushed finished material is still in a higher state due to the high viscosity of the material.
Disclosure of Invention
The invention aims to overcome the defects and provides a system and a method for recycling an asphalt concrete reclaimed material.
[ one aspect of the present invention provides a recycled asphalt concrete material recovery system ]
An asphalt concrete reclaimed material recovery system, comprising:
a material storage module: the storage of asphalt concrete;
a primary screening module: the method is used for primary screening of asphalt concrete;
stripping the crushing module: the device is used for receiving the primarily screened asphalt concrete and stripping and crushing the asphalt concrete;
a secondary screening module: the device is used for receiving the stripped and crushed asphalt concrete and carrying out secondary screening on the stripped and crushed asphalt concrete;
this storage module, one-level screening module, peel off crushing module and the integrated erection joint of second grade screening module, and the particle diameter of the asphalt concrete after one-level screening module, the screening of second grade screening module reduce in proper order.
Preferably, the integrated installation and connection type three-stage screening device further comprises a three-stage screening module, the three-stage screening module is used for receiving the asphalt concrete after the second-stage screening and carrying out the third-stage screening on the asphalt concrete, and the particle size of the asphalt concrete after the third-stage screening module is smaller than that of the asphalt concrete after the second-stage screening.
Preferably, the system further comprises a conveying module, and the conveying module is used for conveying the asphalt concrete.
Preferably, the conveying module is any one or more of a belt conveyor, a chute or a lifter.
Preferably, the primary screening module is a cold vibrating screen which can screen out asphalt concrete with the particle size of more than 40 mm.
Preferably, the secondary screening module is a vibrating screen which can screen out asphalt concrete with the particle size of more than 10 mm.
Preferably, the three-stage screening module is a high-frequency screen which is used for multi-stage screening of asphalt concrete with the particle size of less than 10 mm.
Preferably, still include a plurality of dust collector module, this dust collector installs the easy leakage point at asphalt concrete for the removal of asphalt concrete dust.
[ another aspect of the present invention provides a method for recovering recycled asphalt concrete materials ]
Primary screening: primary screening is carried out on the asphalt concrete through a primary screening module;
stripping and crushing: rotationally crushing the asphalt concrete subjected to primary screening by a stripping and crushing module;
secondary screening: further screening the stripped and crushed asphalt concrete through a secondary screening module;
and a third-stage screening step: and carrying out multi-stage screening on the asphalt concrete subjected to the secondary screening through the three-stage screening module.
Preferably, the method further comprises a secondary screening step: and conveying the asphalt concrete screened in the first-stage screening and second-stage screening steps to a stripping and crushing module again through a conveying module for stripping and crushing.
By adopting the technical scheme, the invention has the beneficial effects that:
1. the asphalt concrete reclaimed materials are quickly scattered through the stripping and crushing module, and part of asphalt on the surface of the asphalt concrete reclaimed materials is peeled off, so that the aggregate of the asphalt concrete reclaimed materials is crushed, the caking rate of the asphalt concrete reclaimed materials is reduced, the asphalt content of stone materials with the asphalt concrete reclaimed materials being more than 5mm is reduced, and the asphalt content of stone materials with the asphalt concrete reclaimed materials being less than 5mm is increased.
2. Screening the stripped and crushed recycled asphalt concrete material by a secondary screening module to obtain recycled asphalt concrete material with the thickness of more than 10mm, and separating the recycled asphalt concrete material layer by each layer of screen; and enabling recycled asphalt concrete materials with the particle size of less than 10mm to enter a three-stage screening module for three-stage screening, and screening the recycled asphalt concrete with the particle size of 0-10mm into asphalt concrete with smaller particle sizes at different stages step by step through each layer of screen mesh so as to obtain asphalt concrete with different particle sizes and meet different requirements.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only one or several embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to such drawings without creative efforts.
FIG. 1 is a block diagram of a recycled asphalt concrete recycling system according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for recycling recycled asphalt concrete according to an embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details or with other methods described herein.
[ asphalt concrete reclaimed material recovery system provided according to the invention ]
An asphalt concrete reclaimed material recycling system, referring to fig. 1, comprises: a material storage module: the storage of asphalt concrete; a primary screening module: the method is used for primary screening of asphalt concrete; stripping the crushing module: the device is used for receiving the primarily screened asphalt concrete and stripping and crushing the asphalt concrete; a secondary screening module: the device is used for receiving the stripped and crushed asphalt concrete and carrying out secondary screening on the stripped and crushed asphalt concrete; the storage module, the primary screening module, the stripping and crushing module and the secondary screening module are integrally installed and connected, and the particle sizes of asphalt concrete screened by the primary screening module and the secondary screening module are sequentially reduced; the device further comprises a third-level screening module which is integrally installed and connected, wherein the third-level screening module is used for receiving the asphalt concrete after the second-level screening and carrying out third-level screening on the asphalt concrete, and the particle size of the asphalt concrete after the third-level screening module is smaller than that of the asphalt concrete after the second-level screening; the storage module can adopt a storage bin, the primary screening module can adopt but is not limited to a cold vibration screen, the crushing and stripping module can adopt a stripping crusher, the secondary screening module can adopt but is not limited to a vibration screen, the tertiary screening module can adopt but is not limited to a high-frequency screen, and the device further comprises a conveying module, wherein the conveying module is used for conveying asphalt concrete; further, the conveying module is any one or more of a belt conveyor, a chute or a lifter.
The dust removal device further comprises a plurality of dust removal modules, wherein the dust removal modules are installed at the easy leakage points of the asphalt concrete and used for removing the dust of the asphalt concrete; the dust removal module can adopt an electrostatic dust collector, a bag-type dust collector, a cyclone dust collector, a wet dust collector and the like, is specifically arranged at the belt transfer joint, the inlet of a stripping crusher, the inlet of a vibrating screen, the inlet of a high-frequency screen, the outlet of a chute and the like, and dust particles settled by the dust removal module can be sent back to a finished product belt conveyor through a spiral conveyor and are mixed into a finished product material along with the minimum grade to be sent into a finished product material area.
The installation of the recovery system may specifically be: the asphalt concrete is conveyed by a bin and a cold vibration sieve through a belt conveyor, the concrete in the bin is conveyed into the cold vibration sieve through the belt conveyor, the cold vibration sieve is provided with an air cooler, the asphalt concrete is cooled through the air cooler when the asphalt concrete is sieved, the viscosity of asphalt in the asphalt concrete is reduced, the asphalt concrete is prevented from being stuck into blocks, the asphalt concrete with the particle size of more than 40mm can be sieved through the cold vibration sieve, the asphalt concrete is conveyed between the cold vibration sieve and a stripping and crushing device through the belt conveyor and a lifting frame, the asphalt concrete after being sieved by the cold vibration sieve is conveyed to a lifting machine through the belt conveyor, then the asphalt concrete is lifted into the stripping and crushing machine through the lifting machine, the asphalt concrete is crushed by high-speed rotation of the stripping and crushing machine, the asphalt concrete is beaten out at high speed and impacts the side wall of a main machine, so that the asphalt concrete is scattered, and the effects of crushing and stripping asphalt are achieved, still the integrated main building platform of installing and surrounding the cat ladder on the lifting machine is convenient for overhaul equipment, and band conveyer bottom still is provided with lift cylinder subassembly, realizes band conveyer's lift through the flexible of hydro-cylinder.
The crushing stripping machine, the vibrating screen and the high-frequency screen are integrally installed in a main building, and are sequentially arranged from top to bottom, so that the whole reclaimed material recovery system is more compactly installed, the occupied space is small, the asphalt concrete screening process is more compact, the screening efficiency is higher, the stripped and crushed asphalt concrete is conveyed into the vibrating screen through a chute to be subjected to secondary screening, a vibrating screen shell can be a linear screen without limitation, the asphalt concrete with the particle size of more than 10mm can be screened out after the secondary screening of the vibrating screen, the screened asphalt concrete can be conveyed to the stripping crusher again to be crushed and stripped or conveyed to a finished product area to be stored, the conveying can be carried out by various modes such as a belt conveyor, manual carrying and the like, the screened asphalt concrete with the particle size of less than 10mm can be conveyed to the high-frequency screen to be subjected to multi-stage screening after the secondary screening of the vibrating screen, the asphalt concrete with different particle sizes can be sieved into 0-3mm, 3-5mm, 5-10mm and other multi-stage asphalt concrete with different particle sizes by a high-frequency sieve, and the asphalt concrete with different particle sizes can be conveyed to a finished product stacking area for stacking by a belt conveyor, a chute 8, manual carrying or a combined conveying mode thereof.
It should be noted that: the screening particle size of the primary screening, the secondary screening and the tertiary screening of the asphalt concrete can be designed according to the actual required condition, and is not limited to the particle size.
[ method for recovering recycled asphalt concrete materials according to the present invention ]
Referring to fig. 2, the method includes:
primary screening: primary screening is carried out on the asphalt concrete through a primary screening module;
stripping and crushing: rotationally crushing the asphalt concrete subjected to primary screening by a stripping and crushing module;
secondary screening: further screening the stripped and crushed asphalt concrete through a secondary screening module;
and a third-stage screening step: and carrying out multi-stage screening on the asphalt concrete subjected to the secondary screening through the three-stage screening module.
Further, the method also comprises a secondary screening step: and conveying the asphalt concrete screened in the first-stage screening and second-stage screening steps to a stripping and crushing module again through a conveying module for stripping and crushing.
Example 1
Referring to fig. 2, asphalt concrete to be screened is placed in a storage bin and is conveyed to a cold vibration screen through a belt conveyor, the belt conveyor is controlled by frequency conversion and is provided with a vibration arch breaking device, the asphalt concrete can be effectively prevented from arching in the conveying process, the asphalt concrete is primarily screened through the cold vibration screen, the asphalt concrete with the particle size larger than 40mm can be screened, the screened asphalt concrete can be directly conveyed to a stripping crusher to be crushed, meanwhile, the asphalt concrete with the particle size smaller than 40mm after being screened through the cold vibration screen can be conveyed to a lifter through the belt conveyor, the lifter is conveyed to the stripping crusher, the asphalt concrete is uniformly crushed by the stripping crusher in a rotating mode, redundant asphalt in the asphalt concrete is stripped, specifically, the content of asphalt attached to the asphalt concrete with the particle size larger than 5mm is reduced, and the content of the asphalt attached to the asphalt concrete with the particle size smaller than 5mm is increased, and then conveying the peeled and crushed asphalt concrete to a vibrating screen through a chute for secondary screening, screening out the asphalt concrete with the particle size of more than 10mm through the vibrating screen, conveying the screened over-limit material with the particle size of more than 10mm into the peeling and crushing machine again for secondary peeling and crushing or conveying the material to a finished product area for storage, conveying the asphalt concrete with the particle size of less than 10mm, which is screened out by the vibrating screen, to a high-frequency screen through the chute, carrying out multi-stage screening on the asphalt concrete through the high-frequency screen, screening the asphalt concrete into asphalt concrete finished products with different particle sizes of 0-3mm, 3-5mm, 5-10mm and the like, and finally conveying the asphalt concrete finished products to the finished product area through a belt conveyor for stacking.
In conclusion, the asphalt concrete reclaimed materials are quickly scattered through the stripping and crushing module, and part of asphalt on the surface of the asphalt concrete reclaimed materials is peeled off, so that the aggregate of the asphalt concrete reclaimed materials is crushed, the caking rate of the asphalt concrete reclaimed materials is reduced, the asphalt content of stone materials with the asphalt concrete reclaimed materials being more than 5mm is reduced, and the asphalt content of stone materials with the asphalt concrete reclaimed materials being less than 5mm is increased; screening the stripped and crushed recycled asphalt concrete material by a secondary screening module to obtain recycled asphalt concrete material with the thickness of more than 10mm, and separating the recycled asphalt concrete material layer by each layer of screen; and (3) enabling recycled asphalt concrete materials below 10mm to enter a three-stage screening module for secondary screening, and screening the recycled asphalt concrete of 0-10mm into asphalt concrete with smaller particle sizes at different stages step by step through each layer of screen, so as to obtain asphalt concrete with different particle sizes and meet different requirements.
It should be noted that in the foregoing description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
Claims (10)
1. The utility model provides an asphalt concrete reclaimed material recovery system which characterized in that: the method comprises the following steps:
a material storage module: the storage of asphalt concrete;
a primary screening module: the method is used for primary screening of asphalt concrete;
stripping the crushing module: the device is used for receiving the primarily screened asphalt concrete and stripping and crushing the asphalt concrete;
a secondary screening module: the device is used for receiving the stripped and crushed asphalt concrete and carrying out secondary screening on the stripped and crushed asphalt concrete;
this storage module, one-level screening module, peel off crushing module and the integrated erection joint of second grade screening module, and the particle diameter of the asphalt concrete after one-level screening module, the screening of second grade screening module reduce in proper order.
2. The asphalt concrete reclaimed material recovery system of claim 1, wherein: the three-stage screening module is used for receiving asphalt concrete after the second-stage screening and carrying out three-stage screening on the asphalt concrete, and the particle size of the asphalt concrete after the three-stage screening module is screened is smaller than that of the asphalt concrete after the second-stage screening.
3. The asphalt concrete reclaimed material recovery system of claim 1, wherein: the conveying module is used for conveying the asphalt concrete.
4. The asphalt concrete reclaimed material recovery system of claim 3, wherein: the conveying module is any one or more of a belt conveyor, a chute or a lifter.
5. The asphalt concrete reclaimed material recovery system of claim 1, wherein: the primary screening module is a cold vibration screen which can screen out asphalt concrete with the particle size larger than 40 mm.
6. The asphalt concrete reclaimed material recovery system of claim 1, wherein: the secondary screening module is a vibrating screen which can screen out asphalt concrete with the particle size larger than 10 mm.
7. The asphalt concrete reclaimed material recovery system of claim 2, wherein: the three-stage screening module is a high-frequency screen, and the high-frequency screen is used for multi-stage screening of asphalt concrete with the particle size smaller than 10 mm.
8. The recycling system of asphalt concrete reclaimed materials according to claim 1, further comprising a plurality of dust removing modules, wherein the dust removing device is installed at a leakage-prone point of asphalt concrete for removing the asphalt concrete dust.
9. A method for recycling a reclaimed material by using the asphalt concrete reclaimed material recycling system according to any one of claims 1 to 8, wherein the method comprises the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
primary screening: primary screening is carried out on the asphalt concrete through a primary screening module;
stripping and crushing: rotationally crushing the asphalt concrete subjected to primary screening by a stripping and crushing module;
secondary screening: further screening the stripped and crushed asphalt concrete through a secondary screening module;
and a third-stage screening step: and further carrying out multi-stage screening on the asphalt concrete subjected to the second-stage screening through the third-stage screening module.
10. The method of claim 9, wherein: further comprises a secondary screening step: and conveying the asphalt concrete screened in the first-stage screening and second-stage screening steps to a stripping and crushing module again through a conveying module for stripping and crushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110315310.2A CN113215921A (en) | 2021-03-24 | 2021-03-24 | Asphalt concrete reclaimed material recovery system and recovery method |
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| CN202110315310.2A CN113215921A (en) | 2021-03-24 | 2021-03-24 | Asphalt concrete reclaimed material recovery system and recovery method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226043A (en) * | 2021-11-02 | 2022-03-25 | 佛山市交通科技有限公司 | Three-stage crushing system and method for asphalt mixture |
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- 2021-03-24 CN CN202110315310.2A patent/CN113215921A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226043A (en) * | 2021-11-02 | 2022-03-25 | 佛山市交通科技有限公司 | Three-stage crushing system and method for asphalt mixture |
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