CN220803742U - Asphalt pavement reclaimed material oil-stone separation system - Google Patents
Asphalt pavement reclaimed material oil-stone separation system Download PDFInfo
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- CN220803742U CN220803742U CN202321975795.9U CN202321975795U CN220803742U CN 220803742 U CN220803742 U CN 220803742U CN 202321975795 U CN202321975795 U CN 202321975795U CN 220803742 U CN220803742 U CN 220803742U
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- screening
- asphalt pavement
- separation system
- discharge port
- screening device
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- 239000000463 material Substances 0.000 title claims abstract description 69
- 239000010426 asphalt Substances 0.000 title claims abstract description 48
- 238000000926 separation method Methods 0.000 title claims abstract description 33
- 239000004575 stone Substances 0.000 title claims abstract description 18
- 238000012216 screening Methods 0.000 claims abstract description 61
- 239000000428 dust Substances 0.000 claims description 13
- 238000004064 recycling Methods 0.000 claims description 11
- 241000353097 Molva molva Species 0.000 claims description 4
- 239000000203 mixture Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Abstract
The utility model discloses an asphalt pavement reclaimed material oil-stone separation system which comprises a material bin for containing asphalt pavement reclaimed materials, a crusher for stripping asphalt, a screening device for primarily screening stripped reclaimed materials and a probability screening device for classifying and finely screening fine materials obtained after primary screening. The asphalt pavement reclaimed materials are firstly stripped by the vertical shaft impact crusher and then subjected to primary screening and fine screening in sequence, so that fine classification screening below 5mm is realized on the basis of effectively avoiding the false grain phenomenon, and a fine material product is obtained.
Description
Technical Field
The utility model belongs to the field of separation and regeneration of asphalt pavement reclaimed materials, and particularly relates to an asphalt pavement reclaimed material oil-stone separation system.
Background
It is estimated that only major and middle repair projects of main roads in China generate old asphalt pavement materials of 1.6 hundred million tons each year. At present, the recycling of the asphalt pavement reclaimed materials (RAP) is mainly applied to the middle-lower surface layer or the base layer of common roads and municipal roads, and the RAP utilization rate is generally below 30%. The main reasons are that stone and asphalt in old materials exist in the form of 'granules', the phenomenon of pseudo particle size is serious, when the RAP doping amount is increased, the mixture grading variation, the poor fusion of new and old asphalt and the 'black stone' phenomenon of the mixture exist, namely, the old materials and the old asphalt still exist in the form of 'granules' in the reclaimed asphalt mixture, the high, low temperature and water damage resistance of the reclaimed asphalt mixture are seriously affected, and the reclaimed asphalt mixture cannot be applied to asphalt surface layers of high-grade and expressways on a large scale.
Aiming at the problems of low utilization rate, large variability and the like of the RAP, the research on the fine separation screening pretreatment of the RAP is particularly important, the RAP has better quality after the fine separation pretreatment, can be used for road conditions of upper, middle and lower layers of expressways or primary roads and the like, greatly improves the mixing proportion and the mixture performance of the plant-mixed thermal regeneration RAP, improves the utilization rate of waste asphalt reclaimed materials, and has remarkable economic benefit.
At present, the pretreatment of asphalt pavement milling materials is usually classified by direct screening or common crushing screening, and is generally classified into two grades of 0-10mm and 10-20 mm. There are the following problems:
(1) The RAP obtained by direct screening and grading has serious false particle size phenomenon, and small materials exist in a granular form to form false large materials, so that the variability of the RAP is large, and the quality cannot be controlled.
(2) The regenerated material is broken up by hammer breaking or pair-stick breaking, and then the regenerated material is divided into products of 0-10mm, 10-20 mm and the like by a circular vibrating screen or a linear vibrating screen. Because the hammer breaking or stick breaking technology is adopted, the reclaimed materials are mainly scattered, the surfaces of the reclaimed coarse and fine aggregates are coated with asphalt and asphalt aggregates, the RAP grading variability is large, the false particle size phenomenon is serious, and the requirements of high-grade highways on the grading stability of asphalt mixtures can not be met.
(3) Asphalt milling materials with the asphalt content below 5mm have high asphalt content and high economic value. The regeneration technology, the screening technology and the crushing technology of the traditional method can not realize the grading of RAP with the diameter of less than 5mm, namely, the RAP is divided into two grades of 0-3mm and 3-5mm, the RAP regenerated fine aggregate can not be fully utilized, and the method is a huge economic waste.
(4) Asphalt pavement reclaimed materials (RAP) are often complex in source, large in variability and high in water content, and the existing pretreatment technology cannot realize high-efficiency fine separation and separation of the asphalt pavement reclaimed materials, so that large-scale production popularization cannot be met.
Thus, there is a need for a new separation screening system for asphalt pavement recycles to obtain a classified fine screening material product.
Disclosure of utility model
The utility model aims to: the utility model aims to provide an asphalt pavement recycling material oil-stone separation system which can realize fine classification screening of RAP materials with the particle diameters of less than 5mm and can effectively avoid the phenomenon of false particle diameters.
The technical scheme is as follows: the utility model relates to an asphalt pavement reclaimed material oil-stone separation system, which comprises a material bin for containing asphalt pavement reclaimed materials, a crusher for stripping asphalt, a screening device for primarily screening stripped reclaimed materials and a probability screening device for classifying and finely screening fine materials obtained after primary screening.
Further, an arch breaking vibrator is arranged on the wall of the material bin of the separation system.
Further, leng Zhenshai is arranged at the discharge port of the material bin of the separation system, and the screened materials are conveyed into the crusher through the belt conveyor.
Further, the crusher and the vibration screening device of the separation system are connected through a lifter.
Further, the reclaimed materials of the separation system which are not screened by the vibration screening device are returned to the crusher to be stripped again by the conveying device.
Further, the vibration screening device of the separation system is respectively provided with three discharge ports, namely a discharge port with the diameter of 0-10mm, a discharge port with the diameter of 10-20mm and a discharge port without screening.
Further, the probability screening device of the separation system is respectively provided with three discharge ports, namely a 0-3mm finished product discharge port, a 3-5mm finished product discharge port and a 5-10mm finished product discharge port.
Further, a discharge port of 0-10mm of the separation system is connected with a feed port of the probability screening device through a chute.
Further, the separation system also comprises a dust removal device for removing dust from the crusher, the screening device, the probability screening device and the blanking point of the belt conveyor.
The beneficial effects are that: compared with the prior art, the utility model has the advantages that: the asphalt pavement reclaimed materials are firstly stripped by the crusher and then subjected to primary screening and fine screening in sequence, so that fine classification screening below 5mm is realized on the basis of effectively avoiding the false grain phenomenon, and a fine material product is obtained.
Drawings
FIG. 1 is a schematic diagram of a separation system according to the present utility model.
Detailed Description
The technical scheme of the utility model is further described in detail below with reference to the accompanying drawings.
The components according to the present invention are all known in the art and are commercially available. The specific types of parts are shown in table 1 below.
TABLE 1 specific types of parts according to the utility model
| Sequence number | Component part | Model number |
| 2 | Breaker (vertical shaft impact breaker) | Ⅵ-3000 |
| 3 | Screening device (vibration screening device) | DYKS |
| 4 | Probability screening device (Multi-motor probability screen device) | GLS0615 |
| 5 | Arch breaking vibrator | SGZP |
| 6 | Leng Zhenshai (Cold mineral vibrating screen) | SLZS3070 |
| 7 | Dust collector (dust catcher) | HMC-12 |
As shown in fig. 1, the asphalt recycling material oil-stone separation system sequentially comprises a material bin 1, a vertical shaft impact crusher 2 connected with the material bin 1 through a belt conveyor 5, a vibration screening device 3 connected with the vertical shaft impact crusher 2 through a lifting machine 6 and a multi-motor probability screening device 4 connected with the vibration screening device 3 through a chute.
Wherein, the material bin 1 is used for holding the asphalt pavement reclaimed materials. In order to avoid arching phenomenon of the asphalt concrete reclaimed materials in use, arch breaking vibrators can be further arranged on the bin walls of the material bin 1, when the materials are bonded to generate unsmooth flow due to damp or overhigh ambient temperature, the bin wall vibrators can be automatically started, the bin wall vibrators can be controlled in a manual forced vibration mode or a delayed vibration mode, and the motor power is 0.15kW. Leng Zhenshai is arranged at the discharge port of the material bin 1, and the sieved material is conveyed into the vertical shaft impact crusher 2 through the belt conveyor 5.
The vertical shaft impact crusher 2 is used for stripping asphalt in asphalt reclaimed materials, so that the phenomenon of false particle size can be effectively avoided.
The vibration screening device 3 is used for carrying out primary screening on the stripped reclaimed materials. 3 layers of screens with different specifications can be arranged on the vibration screening device 3, so that materials with two specifications of 0-10mm and 10-20mm and materials with three specifications of non-screened overrun materials are obtained through screening. Correspondingly, the vibration screening device 3 is respectively provided with a discharge port 7 with the diameter of 0-10mm, a discharge port 8 with the diameter of 10-20mm and a discharge port 9 without screening. The material obtained through the unscreened discharge port 9 is returned by a conveyor (which may be a belt conveyor) to the vertical shaft impact crusher 2 for re-stripping and subsequent screening. The materials screened by the discharge port 7 with the diameter of 0-10mm enter the multi-motor probability screening device 4 for fine screening through the chute.
The multi-motor probability screen device 4 can also be provided with screens of different layers to realize fine classification screening. Namely, the multi-motor probability screen device 4 is provided with 3 layers of screens with different specifications, and then the screens are used for obtaining 0-3mm finished product materials, 3-5mm finished product materials and 5-10mm finished product materials. Correspondingly, the multi-motor probability screen device 4 is respectively provided with three grade discharge ports, namely a 0-3mm finished product discharge port 10, a 3-5mm finished product discharge port 11 and a 5-10mm finished product discharge port 12.
In addition to the above, the separation system of the present utility model further comprises a dust removing device for removing dust from the blanking points of the vertical shaft impact crusher 2, the vibration screening device 3, the multi-motor probability screen device 4 and the belt conveyor 5. The dust removal device may preferably be a bag-type dust remover. And the dust removed by the bag-type dust remover is deposited in the lower box body of the dust remover, and can be conveyed by a screw machine at the bottom of the powder bin and classified as a finished product material with 0-3mm gear.
Claims (9)
1. An asphalt pavement reclaimed material oil stone separation system which is characterized in that: the system comprises a material bin (1) for containing reclaimed materials of asphalt pavement, a crusher (2) for stripping asphalt, a screening device (3) for primarily screening the stripped reclaimed materials and a probability screening device (4) for classifying and finely screening the fine materials obtained after primary screening.
2. The asphalt pavement recycling oil and stone separation system according to claim 1, wherein: the wall of the material bin (1) is provided with an arch breaking vibrator.
3. The asphalt pavement recycling oil and stone separation system according to claim 1, wherein: leng Zhenshai is arranged at the discharge port of the material bin (1), and the screened materials are conveyed into the crusher (2) through the belt conveyor (5).
4. The asphalt pavement recycling oil and stone separation system according to claim 1, wherein: the crusher (2) and the screening device (3) are connected through a lifting machine (6).
5. The asphalt pavement recycling oil and stone separation system according to claim 1, wherein: the reclaimed materials which are not screened by the screening device (3) are returned to the crusher (2) through the conveying device to be stripped again.
6. The asphalt pavement recycling oil and stone separation system according to claim 1, wherein: the screening device (3) is respectively provided with three discharge ports, namely a discharge port (7) with the diameter of 0-10mm, a discharge port (8) with the diameter of 10-20mm and a discharge port (9) which is not screened.
7. The asphalt pavement recycling oil and stone separation system according to claim 1, wherein: the probability screening device (4) is respectively provided with three discharge ports, namely a finished product discharge port (10) with the diameter of 0-3mm, a finished product discharge port (11) with the diameter of 3-5mm and a finished product discharge port (12) with the diameter of 5-10 mm.
8. The asphalt pavement recycling oil and stone separation system according to claim 6, wherein: the discharge port (7) with the diameter of 0-10mm is connected with the feed port of the probability screening device (4) through a chute.
9. The asphalt pavement recycling oil stone separation system according to claim 3, wherein: the separation system also comprises a dust removal device for removing dust from the blanking points of the crusher (2), the screening device (3), the probability screening device (4) and the belt conveyor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321975795.9U CN220803742U (en) | 2023-07-26 | 2023-07-26 | Asphalt pavement reclaimed material oil-stone separation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321975795.9U CN220803742U (en) | 2023-07-26 | 2023-07-26 | Asphalt pavement reclaimed material oil-stone separation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220803742U true CN220803742U (en) | 2024-04-19 |
Family
ID=90712997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321975795.9U Active CN220803742U (en) | 2023-07-26 | 2023-07-26 | Asphalt pavement reclaimed material oil-stone separation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220803742U (en) |
-
2023
- 2023-07-26 CN CN202321975795.9U patent/CN220803742U/en active Active
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