CN215857037U - Refined screening device for recycled asphalt mixture - Google Patents
Refined screening device for recycled asphalt mixture Download PDFInfo
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- CN215857037U CN215857037U CN202122041527.7U CN202122041527U CN215857037U CN 215857037 U CN215857037 U CN 215857037U CN 202122041527 U CN202122041527 U CN 202122041527U CN 215857037 U CN215857037 U CN 215857037U
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Abstract
The utility model relates to the technical field of asphalt screening, in particular to a refined screening device for a regenerated asphalt mixture. The refined screening device for the regenerated asphalt mixture comprises an aggregate collecting box, the aggregate collecting box is erected on a water pool and is provided with an aggregate screen, an aggregate flushing and sinking hopper is fixedly arranged on the aggregate collecting box, and a conveying mechanism is erected on one side of the aggregate flushing and sinking hopper; the asphalt particle filtering and accumulating box is erected on the other side of the aggregate flushing and sinking hopper and is connected with the end part of one side of the top of the aggregate flushing and sinking hopper; and a water inlet of the water treatment circulating pool is respectively communicated with the water pool and a water outlet of the asphalt particle filtering and accumulating box through a conduit. The fine screening device for the recycled asphalt mixture provided by the utility model has the advantages that the old fine aggregates in the waste asphalt mixture and asphalt particles can be finely separated, and the regeneration utilization rate of the fine aggregates in the old asphalt mixture is improved.
Description
Technical Field
The utility model relates to the technical field of asphalt screening, in particular to a refined screening device for a regenerated asphalt mixture.
Background
At present, a large amount of asphalt mixture pavements in China are subjected to maintenance and repair, and a huge amount of waste asphalt mixtures are generated in the maintenance and repair. If the used asphalt mixture is not used, it will cause environmental pollution and waste of data as the price of aggregate and asphalt increases. Therefore, how to properly treat and efficiently utilize the waste asphalt mixture is an urgent problem to be solved by traffic practitioners. Practice shows that the mixing amount of the old materials in the recycled mixture can be greatly increased by separating or grading the waste asphalt pavement materials to a certain extent, and the performance of the recycled mixture is obviously improved. Therefore, the development of the used material fine separation device is very important.
At the present stage, the separation of the old materials is mostly concentrated on crushing and stripping the asphalt mixture in the early stage, so that the lump structure is eliminated, and aggregates of all grades are sorted out; or crushing at low temperature to separate the aggregate from asphalt. However, the above-mentioned complaints relate to how to make the old material better dispersed and the asphalt and aggregate better peeled, and it is not uncommon that the old material is crushed and the asphalt particles are separated from the old aggregate, so that the old fine aggregate contains a large portion of asphalt particles. Therefore, the recycling of the old materials is mostly the recycling of the old coarse aggregates, and if the utilization rate of the old materials is required to be improved, the recycling of the old asphalt mixture fine aggregates needs to be solved.
The defects and shortcomings of the prior art are as follows: the waste asphalt pavement materials are separated or graded to a certain extent, so that the mixing amount of the waste materials in the regenerated mixture can be greatly increased, and the performance of the regenerated mixture is improved, so that a series of waste material separating devices are developed by traffic practitioners. The Chinese patent document CN202011213607.X provides a complete set of efficient fine separation equipment for waste asphalt pavement materials, which comprises a low-temperature storage cylinder, low-temperature efficient crushing equipment and fine vibration screening equipment; be provided with in the high-efficient crushing equipment of low temperature and rotate a section of thick bamboo, evenly be provided with a plurality of rotors along the circumferencial direction that rotates a section of thick bamboo, be provided with the tup on the rotor, be provided with curved crushing shell in the outside that rotates a section of thick bamboo, the shale shaker incasement in the meticulous vibration screening equipment sets up a plurality of shale shakers, and vibrating motor sets up the bottom of the case of shale shaker case. The application of the medium-low temperature storage cylinder enables the asphalt on the surface of the waste asphalt mixture to become hard and brittle, weakens the adhesion of the asphalt, realizes the efficient crushing of the waste materials, and improves the separation efficiency; so that the coarse aggregate is stripped more thoroughly.
However, the technical scheme still has the defects that the aggregate stripped from the waste asphalt mixture cannot be effectively separated from asphalt particles only by screening according to the particle size in the screening process. And the asphalt particles stripped from the waste asphalt mixture have smaller particle size and are almost mixed with the old fine aggregates, so that the screened fine aggregates have lower regeneration utilization rate. In the waste asphalt mixture, particularly, soil and stone powder generated in the crushing process are mixed on the surface of the old fine material, so that the recycling difficulty of the old fine material is also increased invisibly.
Therefore, the existing old material fine separation device cannot separate asphalt particles from aggregates in old fine materials, and the surfaces of the obtained old fine materials are not clean, so that the recycling difficulty of the old fine materials is increased, and waste treatment is selected more often. With the continuous increase of maintenance and repair of asphalt concrete pavements in China, the research can separate old fine aggregates and asphalt particles and obtain clean old fine materials, and the method has great significance for improving the recycling of the waste asphalt mixture fine materials.
Therefore, a new refined screening device for reclaimed asphalt mixture is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a refined screening device for a regenerated asphalt mixture.
The utility model provides a refined screening device for a recycled asphalt mixture, which comprises:
the collecting box is erected on the water pool and is provided with a collecting screen, a collecting flushing and sinking hopper is fixedly arranged on the collecting box, and a conveying mechanism is erected on one side of the collecting flushing and sinking hopper;
the asphalt particle filtering and accumulating box is erected on the other side of the aggregate flushing and sinking hopper and is connected with the end part of one side of the top of the aggregate flushing and sinking hopper;
the water inlet of the water treatment circulating pool is communicated with the water tank and the water outlet of the asphalt particle filtering and accumulating box through pipes respectively, and the water purifying port of the water treatment circulating pool is communicated with the sprinkling pipe arranged on the conveying belt through a pipe.
Preferably, a vibrating screen is arranged in the aggregate flushing and sinking hopper.
Preferably, an electromagnetic discharge valve and a drain valve are fixedly arranged at a communication port of the aggregate flushing and sinking hopper and the aggregate collecting box.
Preferably, transport mechanism includes the mounting bracket, install two sets of driving rollers on the mounting bracket, and two install the drive belt between the driving roller, one of them driving roller and the installation of mounting bracket motor output fixed connection, the drive belt discharge end is washed along gathering materials and is subsided the slope setting of fighting.
Preferably, an old material inlet funnel is erected on the mounting frame.
Preferably, the bottom of the asphalt particle filtering and accumulating box is provided with a target square-hole sieve.
Preferably, a water filtering net for filtering sewage and a filtering film for purifying water liquid are installed in the water treatment circulating tank.
Compared with the related technology, the refined screening device for the recycled asphalt mixture provided by the utility model has the following beneficial effects:
1. the method can finely separate the old fine aggregates and the asphalt particles in the waste asphalt mixture, and improve the regeneration utilization rate of the fine aggregates in the old asphalt mixture;
2. the method can clean dust and stone powder in the waste asphalt mixture to obtain clean and old fine materials, and improves the quality of the regenerated asphalt mixture.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of a refined screening device for recycled asphalt mixture provided by the present invention;
fig. 2 is a schematic view of the mounting structure of the vibrating screen and the electromagnetic control valve in the aggregate flushing and sinking hopper shown in fig. 1.
Reference numbers in the figures: 1. a collection box; 2. collecting material flushing and sinking hopper; 3. a transport mechanism; 4. an old material inlet funnel; 5. a sprinkler pipe; 6. vibrating screen; 7. an electromagnetic discharge valve and a drain valve; 8. a pool; 9. a water treatment circulating pool; 10. asphalt particle filtering and accumulating box.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Referring to fig. 1 to fig. 2, in an embodiment of the present invention, a refined screening apparatus for recycled asphalt mixture includes: an aggregate collection box 1, a water treatment circulation tank 9 and an asphalt particle filtering and accumulating box 10.
In the embodiment of the utility model, referring to fig. 1 and 2, the aggregate collecting box 1 is erected on a water pool 8 and is provided with an aggregate screen, and the aggregate collecting box 1 is fixedly provided with an aggregate flushing and sinking hopper 2, the aggregate flushing and sinking hopper 2 is internally provided with a vibrating screen 6, an electromagnetic discharge valve and a drain valve 7 are fixedly arranged at the communicating port of the aggregate flushing and sinking hopper 2 and the aggregate collecting box 1, a conveying mechanism 3 is erected on one side of the aggregate flushing and sinking hopper 2, the conveying mechanism 3 comprises a mounting frame, two groups of driving rollers are arranged on the mounting rack, a driving belt is arranged between the two driving rollers, one of them driving roller and the motor output fixed connection of installing on the mounting bracket, the drive belt discharge end is along gathering materials and washing 2 slopes settings of sinking fill, and the mounting bracket is put on the shelf and is equipped with old material entry funnel 4.
It should be noted that: conveying old materials by an inclined conveying belt, opening a sprinkling pipe 5 for flushing dust on the surfaces of the old materials on the conveying belt, then enabling water to enter an aggregate flushing and sinking hopper 2 along with the old materials, quickly sinking asphalt particles to the water bottom due to high aggregate density of the asphalt particles, enabling the density of the asphalt particles to be close to that of tap water, floating a part of the asphalt particles on the water surface, slowly sinking the particles coated with a small amount of aggregates to the water bottom, opening a vibrating screen 6, fully cleaning the aggregates, and enabling the asphalt particles coated with a small amount of aggregates to float upwards;
it should be noted that: opening a drain valve at the bottom of the aggregate flushing and sinking hopper 2, so that water liquid in the aggregate flushing and sinking hopper 2 flows into a water tank 8 and is discharged into a water treatment circulating tank 9 from the water tank 8, after the water flow is finished, opening an electromagnetic discharge valve, so that aggregates in the aggregate flushing and sinking hopper 2 fall into an aggregate sieve on the aggregate collecting box 1 and are sieved by the aggregate sieve, and all the sieved aggregates fall into the corresponding aggregate collecting box 1;
in the embodiment: as the aggregate flushing and sinking hopper 2 is funnel-shaped, the lower part of the part is small, and the large shape of the upper part is similar to the shape of an inverted umbrella, thus being convenient for collecting asphalt particles.
In the embodiment of the present invention, referring to fig. 1, the asphalt particle filtering and accumulating tank 10 is erected on the other side of the aggregate flushing and sinking hopper 2, the asphalt particle filtering and accumulating tank 10 is connected to one side end of the top of the aggregate flushing and sinking hopper 2, a 300-mesh square-hole sieve is arranged at the bottom of the asphalt particle filtering and accumulating tank 10, a water inlet of the water treatment circulating tank 9 is respectively communicated with a water tank 8 and a water outlet of the asphalt particle filtering and accumulating tank 10 through a conduit, a clean water outlet of the water treatment circulating tank 9 is communicated with a water spraying pipe 5 arranged on the conveyor belt 3 through a conduit, and a water strainer for filtering sewage and a filter membrane for purifying water liquid are installed in the water treatment circulating tank 9.
It should be noted that: the suspended asphalt particles and water on the upper part of the liquid surface enter an asphalt particle filtering and accumulating box 10, the water liquid and the water flow into a lower end pipeline through a square hole sieve and enter a water treatment circulating pool 9, and the particles on the square hole sieve can be collected;
it should also be noted that: the water treatment circulating tank 9 can filter the water liquid for cleaning the asphalt particles and circularly discharge the water liquid to the sprinkling pipe 5 to clean new old materials, thereby improving the utilization of water resources.
The working principle of the refined screening device for the recycled asphalt mixture provided by the utility model is as follows:
conveying old materials by an inclined conveying belt, opening a sprinkling pipe 5 for flushing dust on the surface of the old materials on the conveying belt, then enabling water to enter an aggregate flushing sinking hopper 2 along with the old materials, enabling asphalt particles to quickly sink to the water bottom due to the fact that the aggregate density of the asphalt particles is large, enabling the density of the asphalt particles to be close to that of tap water, enabling a part of the asphalt particles to float on the water surface, enabling particles wrapped with a small amount of aggregates to slowly sink to the water bottom, opening a vibrating screen 6 to enable the aggregates to be fully cleaned, enabling the asphalt particles wrapped with a small amount of aggregates to float upwards, enabling suspended asphalt particles and water on the upper portion of the liquid surface to enter an asphalt particle filtering and accumulating box 10, enabling water liquid water to flow into a lower end pipeline through a square hole screen to enter a water treatment circulating pool 9, enabling the particles on the square hole screen to be collected, subsequently opening a drain valve at the bottom of the aggregate flushing sinking hopper 2, enabling the water liquid in the aggregate flushing sinking hopper 2 to flow into a water pool 8 and then to be drained to the water treatment circulating pool 9, after rivers end, open the electromagnetism relief valve for aggregate washes and sinks to sink the aggregate in the fill 2 and falls into the aggregate sieve on the collecting box 1 that gathers materials, and sieves by the aggregate sieve, and each grade that sieves gathers materials falls into corresponding collecting box 1.
The circuits and controls involved in the present invention are prior art and will not be described in detail herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a reclaimed asphalt mixture screening plant that becomes more meticulous which characterized in that includes:
the collecting and collecting device comprises a collecting and collecting box (1), wherein the collecting and collecting box (1) is erected on a water pool (8) and is provided with a collecting screen, a collecting flushing and sinking hopper (2) is fixedly arranged on the collecting and collecting box (1), and a conveying mechanism (3) is erected on one side of the collecting flushing and sinking hopper (2);
the asphalt particle filtering and accumulating box (10) is erected at the other side of the aggregate flushing and sinking hopper (2), and the asphalt particle filtering and accumulating box (10) is connected with the end part of one side of the top of the aggregate flushing and sinking hopper (2);
the water treatment circulation pool (9), the water inlet of the water treatment circulation pool (9) is communicated with the water outlet of the water pool (8) and the asphalt particle filtering and accumulating box (10) through a guide pipe respectively, and the water purifying port of the water treatment circulation pool (9) is communicated with the sprinkling pipe (5) arranged on the conveying belt (3) through a guide pipe.
2. The reclaimed asphalt mixture fine screening device according to claim 1, wherein a vibrating screen (6) is arranged in the aggregate flushing and sinking hopper (2).
3. The reclaimed asphalt mixture fine screening device according to claim 1, wherein an electromagnetic discharge valve and a drain valve (7) are fixedly arranged at a communication port of the aggregate flushing and sinking hopper (2) and the aggregate collecting box (1).
4. The refined screening device for the recycled asphalt mixture as claimed in claim 1, wherein the conveying mechanism (3) comprises a mounting frame, two sets of driving rollers are mounted on the mounting frame, a driving belt is mounted between the two driving rollers, one driving roller is fixedly connected with the output end of a motor mounted on the mounting frame, and the discharge end of the driving belt is obliquely arranged along the aggregate flushing sinking hopper (2).
5. The reclaimed asphalt mixture fine screening device according to claim 4, wherein an old material inlet funnel (4) is erected on the mounting frame.
6. The reclaimed asphalt mixture fine screening device according to claim 1, wherein a 300-mesh square-hole screen is arranged at the bottom of the asphalt particle filtering and accumulating box (10).
7. The reclaimed asphalt mixture fine screening device according to claim 1, wherein a water filter screen for filtering sewage and a filter membrane for purifying water liquid are installed in the water treatment circulation tank (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122041527.7U CN215857037U (en) | 2021-08-27 | 2021-08-27 | Refined screening device for recycled asphalt mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122041527.7U CN215857037U (en) | 2021-08-27 | 2021-08-27 | Refined screening device for recycled asphalt mixture |
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| Publication Number | Publication Date |
|---|---|
| CN215857037U true CN215857037U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122041527.7U Active CN215857037U (en) | 2021-08-27 | 2021-08-27 | Refined screening device for recycled asphalt mixture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115849768A (en) * | 2022-11-23 | 2023-03-28 | 中交基础设施养护集团有限公司 | RAP refined graded fine material preparation method, high-efficiency recycled asphalt mixture and process |
| FR3134588A1 (en) * | 2022-04-13 | 2023-10-20 | Universite Gustave Eiffel | Process and unit for processing bituminous road waste, process and unit for manufacturing bituminous coating |
| CN115849768B (en) * | 2022-11-23 | 2024-04-30 | 中交基础设施养护集团有限公司 | Preparation method of RAP refined graded fine material, efficient regenerated asphalt mixture and process |
-
2021
- 2021-08-27 CN CN202122041527.7U patent/CN215857037U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3134588A1 (en) * | 2022-04-13 | 2023-10-20 | Universite Gustave Eiffel | Process and unit for processing bituminous road waste, process and unit for manufacturing bituminous coating |
| CN115849768A (en) * | 2022-11-23 | 2023-03-28 | 中交基础设施养护集团有限公司 | RAP refined graded fine material preparation method, high-efficiency recycled asphalt mixture and process |
| CN115849768B (en) * | 2022-11-23 | 2024-04-30 | 中交基础设施养护集团有限公司 | Preparation method of RAP refined graded fine material, efficient regenerated asphalt mixture and process |
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