阅读说明：本技术 厂拌热再生沥青混合料制备方法及其生产设备 (Preparation method and production equipment of plant-mixed hot recycled asphalt mixture ) 是由 李守东 耿金龙 陶志国 唐修佳 史代明 王方磊 肖进林 陈茂祥 罗万里 于 2020-05-25 设计创作，主要内容包括：本发明涉及一种厂拌热再生沥青混合料制备方法及其生产设备,其包括以下步骤：分别对细料和粗料进行加热和搅拌；对粗料和细料进行充分的混合；对加工过程中产生的沥青烟进行收集,将高温沥青烟通入到润滑油或再生剂中；包括细料搅拌桶、粗料搅拌桶以及再生料搅拌桶,还包括储料桶,细料搅拌桶、粗料搅拌桶以及再生料搅拌桶上端均连通有烟气收集管,烟气收集管与储料桶相连通。本发明在对细料和粗料进行热加工拌合的时候使沥青烟中的沥青挥发物与润滑油或者再生剂充分的混合在一起,能够使沥青挥发物充分的与润滑油和再生剂相混合,能够最大程度的保证再生沥青料的性能,同时还提高了旧沥青料的回收利用率。(The invention relates to a plant-mixed hot recycled asphalt mixture preparation method and production equipment thereof, wherein the plant-mixed hot recycled asphalt mixture preparation method comprises the following steps: respectively heating and stirring the fine material and the coarse material; fully mixing the coarse material and the fine material; collecting asphalt smoke generated in the processing process, and introducing the high-temperature asphalt smoke into lubricating oil or a regenerant; including thin material agitator, coarse fodder agitator and regeneration material agitator, still include the storage vat, thin material agitator, coarse fodder agitator and regeneration material agitator upper end all communicate there is the flue gas collecting pipe, and the flue gas collecting pipe is linked together with the storage vat. According to the invention, asphalt volatile matters in the asphalt smoke are fully mixed with the lubricating oil or the regenerant when the fine materials and the coarse materials are subjected to hot processing and mixing, so that the asphalt volatile matters can be fully mixed with the lubricating oil and the regenerant, the performance of the regenerated asphalt material can be ensured to the greatest extent, and the recycling rate of the old asphalt material is improved.)

1. A preparation method of a plant-mixed hot recycled asphalt mixture is characterized by comprising the following steps: the method comprises the following steps:

step1, crushing the old asphalt material into fine material and coarse material;

step2, heating the fine material and the coarse material obtained in Step1 respectively;

step3, blending the fine material and the coarse material in the heating process, and adding lubricating oil and a regenerant into the fine material and the coarse material;

step4, fully mixing the coarse material and the fine material obtained in Step3, and adding lubricating oil and a regenerant in the mixing process;

step5, collecting the asphalt smoke in Step2, Step3 and Step4, and introducing the high-temperature asphalt smoke into the lubricating oil or the regenerant in Step 3.

2. The method for preparing the hot mix plant recycling asphalt mixture according to claim 1, wherein the method comprises the following steps: at Step5, the pipe for collecting the asphalt fumes needs to be heated and insulated.

3. The method for preparing the hot mix plant recycling asphalt mixture according to claim 2, wherein the method comprises the following steps: the lubricant and the regenerant are heated while the lubricant and the regenerant are added to the fine and coarse materials.

4. A plant-mixed hot recycled asphalt mixture production facility using the method of claim 1, characterized in that: the device comprises a fine material stirring barrel (1), a coarse material stirring barrel (2) and a regenerated material stirring barrel (3), wherein a storage barrel (4) used for storing a regenerant and lubricating oil is arranged on one side of the regenerated material stirring barrel (3), the storage barrel (4) is communicated with the fine material stirring barrel (1), the coarse material stirring barrel (2) and the regenerated material stirring barrel (3), the upper ends of the fine material stirring barrel (1), the coarse material stirring barrel (2) and the regenerated material stirring barrel (3) are communicated with a flue gas collecting pipe (5), and the flue gas collecting pipe (5) is communicated with the storage barrel (4) and extends to the bottom of an inner cavity of the storage barrel (4);

the waste gas collecting pipe (6) is communicated with the upper end of the storage barrel (4), a waste gas treatment device (7) is arranged on one side of the storage barrel (4), and the waste gas collecting pipe (6) is connected with the waste gas treatment device (7).

5. The plant-mixed hot recycled asphalt mixture production equipment according to claim 4, wherein: flue gas collecting pipe (5) include honeycomb duct (61) and blast pipe (62) that are linked together with honeycomb duct (61), blast pipe (62) are rotated the cover and are established the one end of giving vent to anger of honeycomb duct (61), the one end intercommunication of giving vent to anger of blast pipe (62) has shunt tubes (63), a plurality of ventholes have been seted up to the lower extreme of shunt tubes (63).

6. The plant-mixed hot recycled asphalt mixture production equipment according to claim 5, characterized in that: the upper end of the reclaimed material stirring barrel (3) is fixedly connected with an air booster pump (11), the air booster pump (11) is communicated with a booster air pipe (12), one air outlet end of the booster air pipe (12) faces to the inner cavity of the reclaimed material stirring barrel (3) and is communicated with a flow guide pipe (61), and a heating wire is arranged in the booster air pipe (12);

the honeycomb duct (61) outside fixedly connected with first motor (8), the coaxial fixedly connected with ring gear (9) in outside of blast pipe (62), the output end fixedly connected with drive gear (10) of first motor (8), drive gear (10) and ring gear (9) mesh mutually.

7. The plant-mixed hot recycled asphalt mixture production equipment according to claim 4, wherein: the reclaimed material mixing tank is characterized in that a connecting shaft (13) is connected to the reclaimed material mixing tank (3) in a rotating mode, the connecting shaft (13) is a hollow pipe, a conveying pipe (14) is communicated with the storage tank (4), the conveying pipe (14) is communicated with the connecting shaft (13), a mixing paddle is connected to the outer side of the connecting shaft (13), a discharging pipeline (18) is connected to the mixing paddle, the discharging pipeline (18) is communicated with the connecting shaft (13), and a plurality of discharging ports are formed in the discharging pipeline (18).

8. The plant-mixed hot recycled asphalt mixture production facility of claim 7, wherein: connecting axle (13) include with regeneration material agitator (3) rotate first (mixing) shaft (131) of being connected and rotate and wear to establish second (mixing) shaft (132) in first (mixing) shaft (131), first (mixing) shaft (131) outside fixedly connected with stirring vane (16), second (mixing) shaft (132) outside fixedly connected with second stirring vane (17), conveyer pipe (14) are linked together with second (mixing) shaft (132), ejection of compact pipeline (18) and second stirring vane (17) fixed connection, ejection of compact pipeline (18) are linked together with the inner chamber of second (mixing) shaft (132).

9. The plant-mixed hot recycled asphalt mixture production facility of claim 8, wherein: the lower end of the regenerated material stirring barrel (3) is fixedly connected with a second motor (19), the output end of the second motor (19) is connected with a driving shaft (20), a driving gear (21) is coaxially and fixedly connected onto the driving shaft (20), a driven gear ring (22) is fixedly connected to the outer side of the first stirring shaft (131), and the driving gear (21) is meshed with the driven gear ring (22);

the coaxial fixedly connected with first action wheel (23) on drive shaft (20), fixedly connected with is followed driving wheel (24) on second (mixing) shaft (132), pass through first belt (25) transmission between first action wheel (23) and the first follow driving wheel (24).

10. The plant-mixed hot recycled asphalt mixture production facility of claim 9, wherein: a third stirring shaft (35) is rotatably connected to the side wall of the regenerated material stirring barrel (3), the third stirring shaft (35) is horizontally arranged, the third stirring shaft (35) extends into the inner cavity of the regenerated material stirring barrel, and a stirring head (36) is fixedly connected to the third stirring shaft (35);

a second driving wheel (26) is coaxially and fixedly connected on the driving shaft (20), a supporting plate (27) is arranged on one side of the regenerated material stirring barrel (3), a rotating shaft (28) is rotatably connected on the supporting plate (27), a second driven wheel (29) is coaxially and fixedly connected to the rotating shaft (28), the second driving wheel (26) and the second driven wheel (29) are driven by a second belt (30), a transition gear (31) is coaxially and fixedly connected to the rotating shaft (28), a driving gear ring (32) is rotatably connected to the outer side of the regenerated material stirring barrel (3), the transition gear (31) is meshed with a driving gear ring (32), an inclined gear ring (33) is coaxially and fixedly connected to the driving gear ring (32), the third stirring shaft (35) is coaxially and fixedly connected with a bevel gear (34), and the bevel gear (34) is meshed with a bevel gear ring (33).

Technical Field

The invention relates to the technical field of asphalt preparation, in particular to a preparation method and production equipment of a plant-mixed hot recycled asphalt mixture.

Background

After the rapid development of roads in China for more than ten years, a large number of asphalt pavements enter the major and middle repair periods. Compared with the traditional asphalt pavement maintenance mode, the asphalt pavement regeneration can save a large amount of raw materials such as asphalt, gravel and the like, save engineering investment, and simultaneously is beneficial to treating waste materials and protecting the environment, thereby having remarkable economic benefit, social benefit and environmental benefit. With the concern of people on environmental protection and social benefits and the progress of technology, the recycling technology of asphalt pavements is more and more paid attention by people.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a preparation method of a hot mix plant recycled asphalt mixture, which can better utilize asphalt smoke in the heating process of old asphalt and improve the quality of recycled asphalt.

The above object of the present invention is achieved by the following technical solutions:

the method comprises the following steps:

step1, crushing the old asphalt material into fine material and coarse material;

step2, heating the fine material and the coarse material obtained in Step1 respectively;

step3, blending the fine material and the coarse material in the heating process, and adding lubricating oil and a regenerant into the fine material and the coarse material;

step4, fully mixing the coarse material and the fine material obtained in Step3, and adding lubricating oil and a regenerant in the mixing process;

step5, collecting the asphalt smoke in Step2, Step3 and Step4, and introducing the high-temperature asphalt smoke into the lubricating oil or the regenerant in Step 3.

Through adopting above-mentioned technical scheme, can let in lubricating oil or regenerant with the pitch cigarette when carrying out the hot working mix to fine material and coarse fodder, make the pitch volatile substance in the pitch cigarette be in the same place with the abundant mixture of lubricating oil or regenerant, can make the abundant and lubricating oil and regenerant of pitch volatile substance mix, the regenerant and the lubricating oil after will mixing let in the regeneration pitch material again, make the regenerant and the abundant and regeneration pitch material of lubricating oil mix, the performance of assurance regeneration pitch material that can the at utmost, the recycle who has still improved old pitch material simultaneously is rateed.

The present invention in a preferred example may be further configured to: at Step5, the pipe for collecting the asphalt fumes needs to be heated and insulated.

Through adopting above-mentioned technical scheme, can guarantee that the pitch cigarette can not temperature reduction and cooling when collecting the pitch cigarette, reduce the pitch adhesion volume of pipeline inner wall, guarantee the abundant recycle to the pitch cigarette simultaneously.

The present invention in a preferred example may be further configured to: the lubricant and the regenerant are heated while the lubricant and the regenerant are added to the fine and coarse materials.

By adopting the technical scheme, the lubricating oil and the regenerant are heated and then mixed with the regenerated asphalt material, so that the lubricating oil and the regenerant can be fully mixed with the regenerated asphalt material, the asphalt smoke can not be condensed in the lubricating oil and the regenerant after being heated, and the asphalt smoke, the lubricating oil and the regenerant can be fully mixed.

The invention also aims to provide plant-mixed hot recycled asphalt mixture production equipment, which can recycle asphalt smoke in the heating process of old asphalt and ensure the performance of recycled asphalt materials.

The above object of the present invention is achieved by the following technical solutions:

the plant-mixed hot recycled asphalt mixture production equipment comprises a fine material stirring barrel, a coarse material stirring barrel and a recycled material stirring barrel, wherein a storage barrel for storing a recycling agent and lubricating oil is arranged on one side of the recycled material stirring barrel, the storage barrel is communicated with the fine material stirring barrel, the coarse material stirring barrel and the recycled material stirring barrel, the upper ends of the fine material stirring barrel, the coarse material stirring barrel and the recycled material stirring barrel are communicated with a flue gas collecting pipe, and the flue gas collecting pipe is communicated with the storage barrel and extends to the bottom of an inner cavity of the storage barrel;

the waste gas collecting pipe is communicated with the upper end of the storage barrel, a waste gas treatment device is arranged on one side of the storage barrel, and the waste gas collecting pipe is connected with the waste gas treatment device.

Through adopting above-mentioned technical scheme, the pitch material after the breakage divide into thin material and coarse fodder, and the thin material stirs in the thin material agitator, and the coarse fodder stirs in the coarse fodder agitator, and the pitch material after the stirring can enter into in the reclaimed materials agitator. When the fine material agitator, the coarse material agitator and the reclaimed material agitator stir the asphalt material, asphalt smoke can be generated by the asphalt mixture, the smoke collecting pipe can collect the asphalt smoke, the asphalt smoke can be introduced into the storage vat, so that the asphalt smoke can be fully mixed with lubricating oil or a reclaiming agent, the lubricating oil and the reclaiming agent can enter the reclaimed material to be mixed and stirred, and the quality of the reclaimed material can be ensured. Remaining waste gas can pass through the exhaust gas collecting pipe discharge in the storage vat, can advance exhaust treatment device in the exhaust, and exhaust treatment device can handle waste gas, guarantees that the emission of waste gas is cleaner.

The present invention in a preferred example may be further configured to: the flue gas collecting pipe includes honeycomb duct and the blast pipe that is linked together with the honeycomb duct, the blast pipe rotates the cover and establishes the one end of giving vent to anger at the honeycomb duct, the one end intercommunication of giving vent to anger of blast pipe has the shunt tubes, a plurality of ventholes have been seted up to the lower extreme of shunt tubes.

Through adopting above-mentioned technical scheme, the pitch cigarette passes through the flue gas collecting pipe and enters into honeycomb duct and blast pipe, and during rethread blast pipe entered into the shunt tubes, venthole on the shunt tubes can be discharged the pitch cigarette into lubricating oil and regenerant, when letting in the pitch cigarette, the blast pipe can rotate, makes more even the letting in of pitch cigarette in lubricating oil and regenerant to can guarantee the make full use of to the pitch cigarette, also can guarantee the quality of regeneration pitch material.

The present invention in a preferred example may be further configured to: the upper end of the reclaimed material stirring barrel is fixedly connected with an air booster pump, the air booster pump is communicated with a booster air pipe, the air outlet end of the booster air pipe faces to the inner cavity of the reclaimed material stirring barrel and is communicated with a flow guide pipe, and a heating wire is arranged in the booster air pipe;

the honeycomb duct outside fixedly connected with first motor, the coaxial fixedly connected with ring gear in outside of blast pipe, the output fixedly connected with drive gear of first motor, drive gear meshes with the ring gear mutually.

Through adopting above-mentioned technical scheme, when the glance coal enters into the reclaimed materials agitator inside, the air booster pump can play the effect of pressure boost to the glance coal in the flow guide pipe, can make inside the glance coal enters into the reclaimed materials agitator more quickly, when the air booster pump carries highly-compressed air in the flow guide pipe, the heater strip can heat the air, is guaranteeing highly-compressed air's temperature, can not make the glance coal condense, guarantees the normal transport of glance coal. When letting in the glance coal in to the regeneration material agitator, start first motor, first motor drives drive gear and rotates, and drive gear meshing ring gear rotates, and the ring gear can drive the blast pipe and rotate, and the blast pipe can make glance coal more even with the even transport lubricating oil of glance coal and regenerant in the pivoted in can carrying lubricating oil and regenerant, can make glance coal mix with lubricating oil and regenerant.

The present invention in a preferred example may be further configured to: the reclaimed material mixing tank is connected with a connecting shaft in a rotating manner, the connecting shaft is a hollow pipe, a conveying pipe is communicated with the storage tank, the conveying pipe is communicated with the connecting shaft, a mixing paddle is connected to the outer side of the connecting shaft, a discharging pipeline is connected to the mixing paddle, and the discharging pipeline is communicated with the connecting shaft and is provided with a plurality of discharging ports.

Through adopting above-mentioned technical scheme, the conveyer pipe can let in lubricating oil or regenerant in the connecting axle, and when the connecting axle drove the stirring rake and rotate, during the even entering into the reclaimed materials agitator that enters into of rotation that lubricant and regenerant can follow the stirring rake to even and pitch reclaimed materials are mixed mutually.

The present invention in a preferred example may be further configured to: the connecting shaft comprises a first stirring shaft rotationally connected with the reclaimed material stirring barrel and a second stirring shaft rotationally penetrating through the first stirring shaft, a first stirring blade is fixedly connected to the outer side of the first stirring shaft, a second stirring blade is fixedly connected to the outer side of the second stirring shaft, the conveying pipe is communicated with the second stirring shaft, the discharging pipeline is fixedly connected with the second stirring blade, and the discharging pipeline is communicated with an inner cavity of the second stirring shaft;

the first stirring blade and the second stirring blade.

Through adopting above-mentioned technical scheme, when stirring the pitch reclaimed materials, first (mixing) shaft and second (mixing) shaft can drive first stirring vane and second stirring vane and rotate, abundant stir the pitch reclaimed materials in the pivoted, when second stirring vane stirs the pitch reclaimed materials, in emollient and regenerant in the second (mixing) shaft can enter into the pitch reclaimed materials through ejection of compact pipeline, can be abundant mix with the pitch reclaimed materials.

The present invention in a preferred example may be further configured to: the lower end of the regenerated material stirring barrel is fixedly connected with a second motor, the output end of the second motor is connected with a driving shaft, a driving gear is coaxially and fixedly connected onto the driving shaft, a driven gear ring is fixedly connected to the outer side of the first stirring shaft, and the driving gear is meshed with the driven gear ring;

the coaxial fixedly connected with first action wheel on the drive shaft, fixedly connected with is followed the driving wheel on the second (mixing) shaft, pass through first belt transmission between first action wheel and the first follow driving wheel.

Through adopting above-mentioned technical scheme, when stirring the pitch reclaimed materials, start the second motor, the second motor drives the drive shaft and rotates, the drive shaft is moving the driving gear and rotating in the pivoted, the driven ring gear of driving gear meshing when the pivoted, thereby can drive first (mixing) shaft and rotate, first action wheel drives first from the driving wheel rotation through first belt simultaneously, can make the second (mixing) shaft rotate, thereby turning to of first (mixing) shaft and second (mixing) shaft is opposite, can be abundant carry out the mix to it when stirring the pitch reclaimed materials, make the mixed effect of pitch reclaimed materials better.

The present invention in a preferred example may be further configured to: a third stirring shaft is rotatably connected to the side wall of the regenerated material stirring barrel, the third stirring shaft is horizontally arranged, the third stirring shaft extends into an inner cavity of the regenerated material stirring barrel, and a stirring head is fixedly connected to the third stirring shaft;

coaxial fixedly connected with second action wheel in the drive shaft, one side of reclaimed material agitator is provided with the backup pad, and it has the axis of rotation to rotate in the backup pad, coaxial fixedly connected with second from the driving wheel in the axis of rotation, second action wheel and second are from driving through the second belt transmission between the driving wheel, coaxial fixedly connected with transition gear in the axis of rotation, the reclaimed material agitator outside rotates and is connected with the drive ring gear, transition gear meshes with the drive ring gear mutually, coaxial fixedly connected with bevel gear on the drive ring gear, coaxial fixedly connected with helical gear on the third (mixing) shaft, helical gear meshes with bevel gear mutually.

Through adopting above-mentioned technical scheme, the drive shaft passes through the second belt and drives the axis of rotation, when the axis of rotation rotates, the axis of rotation can drive transition gear and rotate, transition gear meshes the drive ring gear in the pivoted and rotates, drive ring gear drives the bevel gear and rotates, the bevel gear can mesh the drive bevel gear and rotate in the pivoted, can drive the third (mixing) shaft in bevel gear pivoted and rotate, the third (mixing) shaft drives the stirring head and rotates, thereby can mix the pitch reworked material in the horizontal direction.

In summary, the invention includes at least one of the following beneficial technical effects:

1. when the fine materials and the coarse materials are subjected to hot processing and mixing, asphalt volatile matters in the asphalt smoke are fully mixed with lubricating oil or a regenerant, so that the asphalt volatile matters can be fully mixed with the lubricating oil and the regenerant, the performance of the regenerated asphalt material can be ensured to the greatest extent, and the recycling rate of the old asphalt material is improved;

2. when the asphalt smoke enters the storage barrel, the first motor can be linked with the exhaust pipe to rotate, so that the asphalt smoke can enter the lubricating oil and the regenerant more uniformly, and the asphalt smoke can be mixed with the lubricating oil and the regenerant more uniformly;

3. first (mixing) shaft and second (mixing) shaft turn to the opposite in the pivoted, can be more even when stirring pitch reclaimed materials, and the third (mixing) shaft drives the stirring head and rotates in the horizontal direction simultaneously, can turn pitch reclaimed materials and carry out even mixture.

Drawings

FIG. 1 is a schematic view of the overall structure of an asphalt mixture;

FIG. 2 is a schematic sectional perspective view of a storage vat;

FIG. 3 is a schematic sectional perspective view of a reclaimed material mixing tank;

FIG. 4 is a schematic diagram of the internal structure of the reclaimed material mixing tank;

fig. 5 is a partially enlarged schematic view of a portion a in fig. 4.

In the figure, 1, a fine material stirring barrel; 2. a coarse material stirring barrel; 3. a reclaimed material stirring barrel; 4. a storage barrel; 5. a smoke collecting pipe; 6. an exhaust gas collection pipe; 61. a flow guide pipe; 62. an exhaust pipe; 63. a shunt tube; 7. an exhaust gas treatment device; 8. a first motor; 9. a toothed ring; 10. a drive gear; 11. an air booster pump; 12. pressurizing the air pipe; 13. a connecting shaft; 131. a first stirring shaft; 132. a second stirring shaft; 14. a delivery pipe; 15. an oil pump; 16. a first stirring blade; 17. a second stirring blade; 18. a discharge pipeline; 19. a second motor; 20. a drive shaft; 21. a driving gear; 22. a driven gear ring; 23. a first drive wheel; 24. a first driven wheel; 25. a first belt; 26. a second drive wheel; 27. a support plate; 28. a rotating shaft; 29. a second driven wheel; 30. a second belt; 31. a transition gear; 32. a drive gear ring; 33. a bevel gear ring; 34. a helical gear; 35. a third stirring shaft; 36. and (4) a stirring head.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.