CN211472038U - A preprocessing device that is used for old and useless asphalt concrete high volume of mixing to utilize - Google Patents
A preprocessing device that is used for old and useless asphalt concrete high volume of mixing to utilize Download PDFInfo
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- CN211472038U CN211472038U CN201922058910.6U CN201922058910U CN211472038U CN 211472038 U CN211472038 U CN 211472038U CN 201922058910 U CN201922058910 U CN 201922058910U CN 211472038 U CN211472038 U CN 211472038U
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- asphalt concrete
- crushing
- preheating chamber
- pipeline
- waste asphalt
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Abstract
The utility model relates to a preprocessing device that is used for old and useless asphalt concrete high volume of mixing to utilize, set up the transition pipeline between broken room and preheating chamber including broken room, preheating chamber and slope, the height that highly is greater than the preheating chamber of broken room is equipped with broken mechanism in the broken room, is equipped with heating mechanism in the preheating chamber, is equipped with ash discharging mechanism on the transition pipeline. Compared with the prior art, the utility model discloses can carry out crushing and preheating stoving to old and useless asphalt concrete alone for old and useless asphalt concrete just heats suitable temperature before mixing with new aggregate, and reduces the moisture content, so that can improve the volume of mixing to more than 30% finally, satisfy the requirement that old and useless asphalt concrete high volume of mixing utilized; waste asphalt concrete ash in the materials is discharged through the ash discharge mechanism, the phenomenon that the waste asphalt concrete ash is melted and bonded into a mass in a preheating chamber due to too fast temperature rise to cause blockage or reduce the quality of a regenerated mixture is avoided, and the reliability is good.
Description
Technical Field
The utility model belongs to the technical field of old and useless asphalt concrete retrieves and recycles, a preprocessing device that is used for old and useless asphalt concrete high volume of mixing to utilize is related to.
Background
At present, when the waste asphalt concrete at home and abroad is recycled, the mixing proportion is mostly 10 to 25 percent. With the continuous deepening of the concept of sustainable development and the construction of resource-saving society, people pay more and more attention to the utilization mode of high doping amount more than 25%. However, at present, the research on the utilization of high mixing amount of waste asphalt concrete is still in the beginning stage, and some experts think that the higher the mixing amount is, the more difficult it is to grasp the aging degree of asphalt, and the quality of the regenerated mixture is affected.
Research shows that in the plant-mixed hot recycling process, factors such as the water content and the heating temperature of the waste asphalt concrete can obviously influence the quality of the recycled mixture. In the currently generally adopted intermittent mixing equipment, the crushed and screened waste asphalt concrete is directly weighed and metered, and then is added into a mixing pot to be mixed and stirred with new aggregate and new asphalt, and the method does not independently heat the waste asphalt concrete, so that the temperature is required to be transferred to the waste asphalt concrete by depending on the heated new aggregate, the mixing amount generally cannot exceed 20%, and the requirement of high mixing amount utilization of the waste asphalt concrete cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defect that above-mentioned prior art exists and providing a preprocessing device that is used for old and useless asphalt concrete high volume of mixing to utilize, through carrying out breakage and preheating and drying to old and useless asphalt concrete alone for old and useless asphalt concrete just heats suitable temperature before mixing with new aggregate, and reduces the moisture content, finally can improve to more than 30% with the volume of mixing, satisfies the requirement that old and useless asphalt concrete high volume of mixing utilized.
The purpose of the utility model can be realized through the following technical scheme:
the pretreatment device comprises a crushing chamber, a preheating chamber and a transition pipeline which is obliquely arranged between the crushing chamber and the preheating chamber, wherein the height of the crushing chamber is greater than that of the preheating chamber, a crushing mechanism is arranged in the crushing chamber, a heating mechanism is arranged in the preheating chamber, and an ash discharging mechanism is arranged on the transition pipeline.
Furthermore, the crushing chamber comprises a feeding cavity, a transition cavity and a crushing cavity which are sequentially connected from top to bottom, the crushing mechanism is arranged in the crushing cavity, and the top of the transition pipeline is connected with the bottom of the crushing cavity. The top of the transition cavity is large, the bottom of the transition cavity is small, and waste asphalt concrete in the feeding cavity conveniently slides down to the crushing cavity along the inner wall of the transition cavity.
Furthermore, the crushing mechanism comprises a pair of crushing rollers which are arranged in parallel in the crushing cavity and are matched with the inner wall of the crushing cavity, and a crushing roller driving motor which is matched with the crushing rollers. Every crushing roller driving motor drives corresponding crushing roller and rotates for the old and useless asphalt concrete that falls on two crushing rollers is constantly taken to between two crushing rollers and is extruded broken to below the predetermined particle size value, later passes between two crushing rollers and falls into in the transition pipeline.
Further, the device also comprises a PLC controller which is electrically connected with the driving motor of the crushing roller. The PLC controller can control the rotating speed of the driving motor of the crushing roller, and then the crushing speed is adjusted.
Further, the ash discharge mechanism comprises an ash discharge exhaust fan, a dust hood arranged on the transition pipeline and an ash discharge pipeline arranged between the ash discharge exhaust fan and the dust hood, wherein the ash discharge exhaust fan is communicated with the inside of the transition pipeline through the ash discharge pipeline. Under the suction action of the ash discharge exhaust fan, the waste asphalt concrete ash in the materials is collected by the dust collection hood and then enters the ash discharge pipeline so as to be separated from the granular waste asphalt concrete.
Furthermore, a filter cloth is arranged in the ash discharge pipeline. The waste asphalt concrete ash is intercepted by the filter cloth, and is prevented from entering the ash discharge exhaust fan.
Further, the heating mechanism comprises one or more of a heating wire, an infrared generator or a microwave generator arranged in the preheating chamber. The waste asphalt concrete can be heated to a preset temperature by adopting electric heating, infrared heating, microwave heating or a combination of the electric heating, the infrared heating and the microwave heating.
Furthermore, a discharge hole is formed in the bottom of the preheating chamber. And discharging the heated waste asphalt concrete through a discharge hole.
Furthermore, the preheating chamber is also provided with a steam exhaust mechanism, the steam exhaust mechanism comprises a steam exhaust fan and a steam exhaust pipeline, one end of the steam exhaust pipeline is communicated with the top of the preheating chamber, and the other end of the steam exhaust pipeline is communicated with the steam exhaust fan. After the waste asphalt concrete is heated, the water is evaporated, and the evaporated water is discharged through a steam discharge pipeline under the suction action of a steam discharge exhaust fan.
Furthermore, a drying agent is arranged in the steam exhaust pipeline. The drying agent can adsorb evaporated moisture, and the evaporated moisture is prevented from entering the steam exhaust fan.
When the utility model is in practical use, the waste asphalt concrete enters the crushing chamber from the feed inlet at the top of the crushing chamber, is crushed by the crushing mechanism and then naturally slides into the transition pipeline; when the crushed materials pass through the working range of the ash discharging mechanism, the waste asphalt concrete ash in the materials is discharged by the ash discharging mechanism, so that the waste asphalt concrete ash is prevented from being melted and bonded into a mass in a preheating chamber due to too fast temperature rise to cause blockage or reduce the quality of a regenerated mixture; the waste asphalt concrete after ash discharge is heated to 110-130 ℃ in a preheating chamber and can be directly discharged, and the waste asphalt concrete after being weighed and measured can be added into a mixing pot to be mixed with new aggregate and new asphalt.
Compared with the prior art, the utility model has the characteristics of it is following:
1) by designing the pretreatment device for high-dosage utilization of the waste asphalt concrete, the waste asphalt concrete can be crushed, preheated and dried independently, so that the waste asphalt concrete is heated to a proper temperature before being mixed with new aggregates, the water content is reduced, the dosage can be increased to more than 30% finally, and the requirement of high-dosage utilization of the waste asphalt concrete is met;
2) waste asphalt concrete ash in the materials is discharged through the ash discharge mechanism, the phenomenon that the waste asphalt concrete ash is melted and bonded into a mass in a preheating chamber due to too fast temperature rise to cause blockage or reduce the quality of a regenerated mixture is avoided, and the reliability is good.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
the notation in the figure is:
1-crushing chamber, 101-feeding chamber, 102-transition chamber, 103-crushing chamber, 2-preheating chamber, 3-transition pipeline, 4-crushing roller, 5-ash discharge exhauster, 6-dust collecting hood, 7-ash discharge pipeline, 8-filter cloth, 9-discharge port, 10-steam discharge exhauster, 11-steam discharge pipeline and 12-drying agent.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example (b):
the pretreatment device for high-doping utilization of the waste asphalt concrete comprises a crushing chamber 1, a preheating chamber 2 and a transition pipeline 3 which is obliquely arranged between the crushing chamber 1 and the preheating chamber 2, wherein the height of the crushing chamber 1 is greater than that of the preheating chamber 2, a crushing mechanism is arranged in the crushing chamber 1, a heating mechanism is arranged in the preheating chamber 2, and an ash discharging mechanism is arranged on the transition pipeline 3.
Wherein, crushing chamber 1 is including feeding chamber 101, transition chamber 102 and broken chamber 103 that from top to bottom links to each other in proper order, and crushing mechanism sets up in broken chamber 103, and transition pipeline 3's top links to each other with the bottom in broken chamber 103.
The crushing mechanism comprises a pair of crushing rollers 4 which are arranged in parallel in the crushing cavity 103 and are matched with the inner wall of the crushing cavity 103, and a crushing roller driving motor matched with the crushing rollers 4. The device also comprises a PLC controller which is electrically connected with the driving motor of the crushing roller.
The ash discharging mechanism comprises an ash discharging exhaust fan 5, a dust collection cover 6 arranged on the transition pipeline 3 and an ash discharging pipeline 7 arranged between the ash discharging exhaust fan 5 and the dust collection cover 6, and the ash discharging exhaust fan 5 is communicated with the inside of the transition pipeline 3 through the ash discharging pipeline 7. The ash discharge pipeline 7 is internally provided with filter cloth 8.
The heating means comprises one or more of a heating wire, an infrared generator or a microwave generator disposed within the preheating chamber 2. The bottom of the preheating chamber 2 is provided with a discharge hole 9. The preheating chamber 2 is also provided with a steam exhaust mechanism which comprises a steam exhaust fan 10 and a steam exhaust pipeline 11, wherein one end of the steam exhaust pipeline 11 is communicated with the top of the preheating chamber 2, and the other end of the steam exhaust pipeline is communicated with the steam exhaust fan 10. A drying agent 12 is arranged in the steam exhaust pipeline 11.
In practical application, waste asphalt concrete enters the crushing chamber 1 from a feeding hole at the top of the crushing chamber 1, is crushed by the crushing mechanism, and then naturally slides into the transition pipeline 3; when the crushed materials pass through the working range of the ash discharging mechanism, the waste asphalt concrete ash in the materials is discharged by the ash discharging mechanism, so that the waste asphalt concrete ash is prevented from being melted and bonded into a mass in the preheating chamber 2 due to too fast temperature rise to cause blockage or reduce the quality of a regenerated mixture; the waste asphalt concrete after ash discharge is heated to 110-130 ℃ in the preheating chamber 2 and can be directly discharged, and the waste asphalt concrete after being weighed and measured can be added into a mixing pot to be mixed with new aggregate and new asphalt.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. The pretreatment device for the high-mixing utilization of the waste asphalt concrete is characterized by comprising a crushing chamber (1), a preheating chamber (2) and a transition pipeline (3) which is obliquely arranged between the crushing chamber (1) and the preheating chamber (2), wherein the height of the crushing chamber (1) is greater than that of the preheating chamber (2), a crushing mechanism is arranged in the crushing chamber (1), a heating mechanism is arranged in the preheating chamber (2), and an ash discharging mechanism is arranged on the transition pipeline (3).
2. The pretreatment device for high-dosage utilization of waste asphalt concrete according to claim 1, wherein the crushing chamber (1) comprises a feeding cavity (101), a transition cavity (102) and a crushing cavity (103) which are sequentially connected from top to bottom, the crushing mechanism is arranged in the crushing cavity (103), and the top of the transition pipeline (3) is connected with the bottom of the crushing cavity (103).
3. The pretreatment device for high-dosage utilization of waste asphalt concrete according to claim 2, wherein the crushing mechanism comprises a pair of crushing rollers (4) which are arranged in parallel in the crushing cavity (103) and are matched with the inner wall of the crushing cavity (103), and a crushing roller driving motor matched with the crushing rollers (4).
4. The pretreatment device for high-dosage utilization of the waste asphalt concrete according to claim 3, further comprising a PLC (programmable logic controller), wherein the PLC is electrically connected with the driving motor of the crushing roller.
5. The pretreatment device for high-dosage utilization of waste asphalt concrete according to claim 1, wherein the ash discharge mechanism comprises an ash discharge fan (5), a dust collection cover (6) arranged on the transition pipeline (3) and an ash discharge pipeline (7) arranged between the ash discharge fan (5) and the dust collection cover (6), and the ash discharge fan (5) is communicated with the inside of the transition pipeline (3) through the ash discharge pipeline (7).
6. The pretreatment device for high-dosage utilization of waste asphalt concrete according to claim 5, wherein a filter cloth (8) is arranged in the ash discharge pipeline (7).
7. The pretreatment device for high-dosage utilization of waste asphalt concrete according to claim 1, wherein the heating mechanism comprises one or more of an electric heating wire, an infrared generator or a microwave generator arranged in the preheating chamber (2).
8. The pretreatment device for high-dosage utilization of waste asphalt concrete according to claim 1, characterized in that the bottom of the preheating chamber (2) is provided with a discharge port (9).
9. The pretreatment device for high-dosage utilization of waste asphalt concrete according to claim 1, wherein the preheating chamber (2) is further provided with a steam exhaust mechanism, the steam exhaust mechanism comprises a steam exhaust fan (10) and a steam exhaust pipeline (11), one end of the steam exhaust pipeline (11) is communicated with the top of the preheating chamber (2), and the other end of the steam exhaust pipeline is communicated with the steam exhaust fan (10).
10. The pretreatment device for high-dosage utilization of waste asphalt concrete according to claim 9, characterized in that a drying agent (12) is arranged in the exhaust pipeline (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922058910.6U CN211472038U (en) | 2019-11-26 | 2019-11-26 | A preprocessing device that is used for old and useless asphalt concrete high volume of mixing to utilize |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922058910.6U CN211472038U (en) | 2019-11-26 | 2019-11-26 | A preprocessing device that is used for old and useless asphalt concrete high volume of mixing to utilize |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211472038U true CN211472038U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922058910.6U Active CN211472038U (en) | 2019-11-26 | 2019-11-26 | A preprocessing device that is used for old and useless asphalt concrete high volume of mixing to utilize |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211472038U (en) |
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2019
- 2019-11-26 CN CN201922058910.6U patent/CN211472038U/en active Active
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