CN213867205U - Production facility of continuous type regeneration bituminous mixture - Google Patents
Production facility of continuous type regeneration bituminous mixture Download PDFInfo
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- CN213867205U CN213867205U CN202022606577.0U CN202022606577U CN213867205U CN 213867205 U CN213867205 U CN 213867205U CN 202022606577 U CN202022606577 U CN 202022606577U CN 213867205 U CN213867205 U CN 213867205U
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Abstract
The utility model provides a production facility of continuous type regeneration bituminous mixture which characterized in that: the device comprises an aggregate bin, a regeneration bin, a drying roller, a first conveyor, a stirring device, a lifting device, an asphalt supply device, a powder supply device and a regenerant supply device, wherein the regeneration bin comprises a first regeneration bin for storing the regeneration materials with the particle size of more than 4.75mm and a second regeneration bin for storing the regeneration materials with the particle size of less than 4.75 mm; agitating unit is including the one-level agitator tank and the second grade agitator tank that set gradually, the one-level agitator tank stirs the mixture to the material that gets into and carries to the second grade agitator tank again, through being divided into the two-stage with the reclaimed material and setting up the two-stage stirring, the reclaimed material that is greater than 4.75mm with the particle diameter is dried with the aggregate and is heated, because the lower aggregate that just combines of pitch erodees in the reclaimed material that the particle diameter is greater than 4.75mm erodees, the problem of traditional thermal regeneration's drying drum adhesion has been avoided, avoid the ageing burnt problem of pitch in the reclaimed material simultaneously.
Description
Technical Field
The utility model belongs to bituminous mixture production facility, concretely relates to continuous type reclaimed asphalt mixture's production facility.
Background
The regeneration mode in the current market is mainly that RAP is heated by a roller and then is stirred with new materials to obtain an RAP asphalt mixture, wherein the new aggregate and the RAP are respectively heated and metered by independent drying rollers and then are put into a stirrer, and meanwhile, asphalt and powder are added and stirred to form the new asphalt mixture. In the RAP heating process, the specific surface area is greatly different due to different particle sizes. Therefore, materials with different particle sizes are not heated evenly under the same heating environment. The phenomenon caused is that: 1. when the fine material is heated to the required temperature, the coarse material is far from reaching the required temperature; 2. when the coarse material is heated to the required temperature, the asphalt in the fine material is burnt, aged and loses function. In general, the proportion of fine particles (the particle size is less than or equal to 4.75mm) in RAP is small, but the content of asphalt in RAP is high; coarse particles (the particle size is more than or equal to 4.75mm) are relatively large, and mainly comprise aggregate. Heating to a corresponding temperature is needed in the RAP regeneration process to ensure the adding proportion of RAP, so that the temperature of a large proportion of materials is needed to be ensured, and the asphalt in the fine materials with smaller proportion is burned, aged and lost. The portion of the RAP with the highest added value is wasted. Meanwhile, the content of asphalt in the fine materials is high in the actual production process, and the problem of adhesion to the heating roller after heating and melting is difficult to solve.
In addition, the existing production equipment for the recycled asphalt mixture is usually designed in an intermittent manner, a mode of heating firstly and then metering is adopted, a temporary storage bin and a metering device are needed, and the problem that the cooled asphalt adheres to the temporary storage bin and the metering scale easily occurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a continuous production device for recycled asphalt mixture.
The utility model adopts the following technical scheme:
the utility model provides a production facility of continuous type regeneration bituminous mixture which characterized in that: comprises an aggregate bin, a regeneration bin, a drying roller, a first conveyor, a stirring device, a lifting device, an asphalt supply device, a powder supply device and a regeneration agent supply device,
the aggregate bin is used for storing aggregates;
the regeneration bin comprises a first regeneration bin and a second regeneration bin, wherein the first regeneration bin is used for storing regeneration materials with the particle size of more than 4.75mm, and the second regeneration bin is used for storing regeneration materials with the particle size of less than 4.75 mm;
the drying drum is used for heating and drying the entering materials;
the first conveyor is arranged below the aggregate bin and the first regeneration bin, and is used for receiving and conveying the regenerated materials with the particle size larger than 4.75mm and the aggregates to the drying roller for heating and drying;
the stirring device comprises a first-stage stirring cylinder and a second-stage stirring cylinder which are sequentially arranged, wherein the first-stage stirring cylinder is used for stirring and mixing the entering materials and then conveying the materials into the second-stage stirring cylinder;
the lifting device comprises a first lifting machine arranged between the discharge end of the drying roller and the first-stage mixing cylinder and a second lifting machine arranged between the second regeneration bin and the second-stage mixing cylinder;
the asphalt supply device is connected with the first-stage mixing tank and used for conveying asphalt into the first-stage mixing tank;
the powder supply device is connected with the first hoister, and the first hoister conveys powder into the first-stage stirring cylinder;
the regenerant supply device is connected with the second hoisting machine, and the regenerant is conveyed to the second-stage stirring cylinder by the second hoisting machine.
And the regenerant supply device comprises a regenerant bin used for storing the regenerant and a regenerant spraying pump which is connected with the regenerant bin and sprays the regenerant on the second conveyor.
Further, still include tail gas processing apparatus, tail gas processing apparatus is including setting up the tail gas chamber at the stoving cylinder feed end, the dust remover of being connected with the tail gas chamber and the negative pressure collecting pipe of connection between second grade churn and tail gas chamber.
Furthermore, the device also comprises a combustion chamber connected with the discharge end of the drying roller and a burner connected with the combustion chamber and supplying heat to the drying roller.
Furthermore, the tail gas treatment device also comprises a return pipe connected between the tail gas chamber and the combustion chamber and a circulating fan arranged on the return pipe.
Further, the powder supply device comprises a powder tank for storing powder and a powder metering scale connected between the bottom of the powder tank and the first lifting machine.
Further, the asphalt supply device comprises an asphalt tank for storing asphalt, an asphalt weigher connected with the asphalt tank and an asphalt spraying pump arranged between the asphalt weigher and the primary stirring cylinder.
Further, the first regeneration bin is provided with a plurality of regeneration bins for storing a plurality of different grades of regeneration materials.
It can be known from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: according to the method, the reclaimed materials are divided into two stages and two-stage stirring is arranged, the reclaimed materials with the particle size larger than 4.75mm and the aggregates are dried and heated, the asphalt in the reclaimed materials with the particle size larger than 4.75mm is low and the aggregate is washed, so that the problem of adhesion of a traditional heat regeneration drying roller is avoided, the heated reclaimed materials with the particle size larger than 4.75mm and the aggregates with the particle size smaller than 4.75mm are mixed and stirred in a stirring cylinder, and the problem of asphalt aging and scorching in the reclaimed materials due to different particle sizes when the traditional heat reclaimed materials are not heated in a grading manner is avoided; meanwhile, the grading particle size of the reclaimed material is limited, so that the reclaimed material with the particle size of 4.75mm can be heated together with the aggregate, the number of rollers is reduced, and the production cost is reduced;
by arranging the regenerant spraying pump, the regenerant is sprayed on the regenerated material with the particle size smaller than 4.75mm before entering the secondary stirring cylinder, so that the regenerant can react with the part of the regenerated material for a sufficient time, and the maximum effect is generated.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a production flow chart of a reclaimed asphalt mixture;
in the figure, 1-aggregate bin, 2-regeneration bin, 3-drying roller, 4-stirring device, 5-lifting device, 6-asphalt supplying device, 7-powder supplying device, 8-regenerant supplying device, 9-tail gas treating device, 0-belt scale, 11-first conveyor, 12-second conveyor, 21-first regeneration bin, 22-second regeneration bin, 31-combustion chamber, 32-combustor, 41-first-stage stirring cylinder, 42-second-stage stirring cylinder, 51-first lifter, 52-second lifter, 61-asphalt tank, 62-asphalt metering scale, 63-asphalt spraying pump, 71-powder tank, 72-powder metering scale, 81-regenerant bin, 82-regenerant spraying pump, 91-a tail gas chamber, 92-a dust remover, 93-a negative pressure collecting pipe, 94-a return pipe and 95-a circulating fan.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Referring to fig. 1 to 2, a continuous production apparatus for reclaimed asphalt mixture includes an aggregate bin 1, a reclaimed asphalt bin 2, a drying drum 3, a combustion chamber 31, a burner 32, a first conveyor 11, a stirring device 4, a lifting device 5, an asphalt supply device 6, a powder supply device 7, a regenerant supply device 8, a second conveyor 12, and a tail gas treatment device 9.
Aggregate storehouse 1 is used for saving the aggregate, and aggregate storehouse 1 is provided with a plurality ofly for the aggregate of the multiple different grades of storage, specifically, the bottom of aggregate storehouse 1 is provided with carries out the belt weigher 0 of weighing to the aggregate.
Regeneration feed bin 2 is used for storing the reclaimed materials, including the first regeneration feed bin 21 that is used for storing the particle diameter to be greater than 4.75mm reclaimed materials and the second regeneration feed bin 22 that is used for storing the particle diameter to be less than 4.75mm reclaimed materials, first regeneration feed bin 21 is provided with a plurality ofly, be used for storing the reclaimed materials that the particle diameter of multiple different grading is greater than 4.75mm, specifically, a plurality of first regeneration feed bins 21 and a plurality of aggregate bins 1 interval alternate arrangement, and further, the bottom of first regeneration feed bin 21 and second regeneration feed bin 22 is provided with respectively carries out the belt weigher 0 of weighing to the material.
Drying drum 3 is used for heating the material that gets into and dries, and combustion chamber 4 sets up the discharge end at drying drum 0, and combustor 5 is connected 4 with the combustion chamber and supplies heat to drying drum 3, and the flow direction of hot flue gas is reverse flow with the flow direction of material to improve heat exchange efficiency.
The first conveyor 11 is disposed below the aggregate bins 1 and the first recycling bin 21, and receives and conveys the recycled materials and the aggregates with the measured particle size larger than 4.75mm to the drying drum 3 for heating and drying.
The stirring device 4 comprises a first-stage stirring cylinder 41 and a second-stage stirring cylinder 42 which are sequentially arranged, wherein the first-stage stirring cylinder 41 is used for stirring the heated reclaimed materials, the aggregates, the powder and the asphalt to be uniformly mixed; the second-stage mixing cylinder 42 is used for mixing the mixture input from the first-stage mixing cylinder 41, the recycled materials below 4.75mm and the recycling agents to be uniformly mixed to obtain a recycled asphalt mixture, specifically, the mixing cylinder is a common device in the asphalt production field, and the specific structure of the mixing cylinder is not further described.
The lifting device 5 comprises a first lifting machine 51 arranged between the discharge end of the drying roller 3 and the first-stage mixing cylinder 41 and a second lifting machine 52 arranged between the second regeneration bin 22 and the second-stage mixing cylinder 42, wherein the first lifting machine 51 conveys a mixture of the regenerated material and the aggregate heated from the drying roller 3 into the first-stage mixing cylinder 41 to be mixed with the asphalt and the powder; the second elevator 52 conveys the reclaimed materials with the grain diameter less than 4.75mm and the reclaiming agent to the second-stage stirring cylinder 42 to be uniformly stirred and mixed with other materials stirred in advance to obtain the reclaimed asphalt mixture.
The asphalt supply device 6 is connected with the first-stage stirring cylinder 41 and used for conveying asphalt into the first-stage stirring cylinder 41, and comprises an asphalt tank 61 for storing asphalt, an asphalt metering scale 62 connected with the asphalt tank 61 and an asphalt spraying pump 63 arranged between the asphalt metering scale 62 and the first-stage stirring cylinder 41, and the asphalt is sprayed into the first-stage stirring cylinder 41 through the asphalt spraying pump 63, so that the asphalt and other materials are uniformly mixed.
The powder supply device 7 is connected with the first lifter 51, and is used for conveying powder to the first-stage stirring cylinder 41, and comprises a powder tank 71 used for storing the powder and a powder metering scale 72 connected between the bottom of the powder tank 71 and the first lifter 51.
The second conveyor 12 is arranged between the bottom of the second regeneration bin 22 and the second lifter 52, and conveys the metered regeneration materials with the grain diameter of less than 4.75mm to the second-stage stirring cylinder 42 through the second lifter 52.
The regenerant supply device 8 is used for supplying the regenerant into the second-stage stirring cylinder 42, and comprises a regenerant bin 81 for storing the regenerant and a regenerant spraying pump 82 which is connected with the regenerant bin 81 and sprays the regenerant on the reclaimed materials conveyed on the second conveyor 12, wherein the regenerant spraying pump 82 is arranged to pre-spray the regenerant on the reclaimed materials with the particle size of less than 4.75mm, and the asphalt in the reclaimed materials is fully reflected to generate the maximum effect.
The tail gas treatment device 9 comprises a tail gas chamber 91 arranged at the feeding end of the drying roller 3, a dust remover 92 connected with the tail gas chamber 91, a negative pressure collecting pipe 93 connected between the secondary stirring cylinder 42 and the tail gas chamber 91, a return pipe 94 connected between the tail gas chamber 91 and the combustion chamber 31 and a circulating fan 95 arranged on the return pipe 94, and the secondary stirring cylinder 42 is normally used by arranging the negative pressure collecting pipe 93 and discharging gases such as water vapor and the like generated in the secondary stirring cylinder 42; through the arrangement of the return pipe 94 and the cooperation of the circulating fan 95, part of tail gas is introduced into the combustion chamber 31 for secondary utilization, and the heat loss is reduced.
According to the method, the reclaimed materials are divided into two stages and two-stage stirring is arranged, the reclaimed materials with the particle size larger than 4.75mm and the aggregates are dried and heated, the asphalt in the reclaimed materials with the particle size larger than 4.75mm is low and the aggregate is washed, so that the problem of adhesion of a traditional heat regeneration drying roller 3 is avoided, the heated reclaimed materials with the particle size larger than 4.75mm and the aggregates with the particle size smaller than 4.75mm are mixed and stirred in a stirring cylinder, and the problem of asphalt aging and scorching in the reclaimed materials due to different particle sizes when the traditional heat reclaimed materials are not heated in a grading manner is avoided; meanwhile, the grading particle size of the reclaimed material is limited, so that the reclaimed material with the particle size of 4.75mm can be heated together with the aggregate, the number of rollers is reduced, and the production cost is reduced.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.
Claims (8)
1. The utility model provides a production facility of continuous type regeneration bituminous mixture which characterized in that: comprises an aggregate bin, a regeneration bin, a drying roller, a first conveyor, a stirring device, a lifting device, an asphalt supply device, a powder supply device and a regeneration agent supply device,
the aggregate bin is used for storing aggregates;
the regeneration bin comprises a first regeneration bin and a second regeneration bin, wherein the first regeneration bin is used for storing regeneration materials with the particle size of more than 4.75mm, and the second regeneration bin is used for storing regeneration materials with the particle size of less than 4.75 mm;
the drying drum is used for heating and drying the entering materials;
the first conveyor is arranged below the aggregate bin and the first regeneration bin, and is used for receiving and conveying the regenerated materials with the particle size larger than 4.75mm and the aggregates to the drying roller for heating and drying;
the stirring device comprises a first-stage stirring cylinder and a second-stage stirring cylinder which are sequentially arranged, wherein the first-stage stirring cylinder is used for stirring and mixing the entering materials and then conveying the materials into the second-stage stirring cylinder;
the lifting device comprises a first lifting machine arranged between the discharge end of the drying roller and the first-stage mixing cylinder and a second lifting machine arranged between the second regeneration bin and the second-stage mixing cylinder;
the asphalt supply device is connected with the first-stage mixing tank and used for conveying asphalt into the first-stage mixing tank;
the powder supply device is connected with the first hoister, and the first hoister conveys powder into the first-stage stirring cylinder;
the regenerant supply device is connected with the second hoisting machine, and the regenerant is conveyed to the second-stage stirring cylinder by the second hoisting machine.
2. The continuous reclaimed asphalt mixture production facility of claim 1, wherein: the regeneration agent supply device comprises a regeneration agent bin used for storing the regeneration agent and a regeneration agent spraying pump which is connected with the regeneration agent bin and sprays the regeneration agent on the regeneration material on the second conveyor.
3. The continuous reclaimed asphalt mixture production facility of claim 1, wherein: the tail gas treatment device comprises a tail gas chamber arranged at the feeding end of the drying roller, a dust remover connected with the tail gas chamber and a negative pressure collecting pipe connected between the second-stage stirring cylinder and the tail gas chamber.
4. A continuous reclaimed asphalt mixture production facility as claimed in claim 3, wherein: the drying device also comprises a combustion chamber connected with the discharge end of the drying roller and a burner connected with the combustion chamber and supplying heat to the drying roller.
5. The continuous reclaimed asphalt mixture production facility of claim 4, wherein: the tail gas treatment device also comprises a return pipe connected between the tail gas chamber and the combustion chamber and a circulating fan arranged on the return pipe.
6. The continuous reclaimed asphalt mixture production facility of claim 1, wherein: the powder supply device comprises a powder tank for storing powder and a powder metering scale connected between the bottom of the powder tank and the first hoister.
7. The continuous reclaimed asphalt mixture production facility of claim 1, wherein: the asphalt supply device comprises an asphalt tank for storing asphalt, an asphalt weigher connected with the asphalt tank and an asphalt spraying pump arranged between the asphalt weigher and the primary stirring cylinder.
8. The continuous reclaimed asphalt mixture production facility of claim 1, wherein: the first regeneration bin is provided with a plurality of regeneration bins for storing a plurality of regeneration materials with different grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022606577.0U CN213867205U (en) | 2020-11-12 | 2020-11-12 | Production facility of continuous type regeneration bituminous mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022606577.0U CN213867205U (en) | 2020-11-12 | 2020-11-12 | Production facility of continuous type regeneration bituminous mixture |
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| Publication Number | Publication Date |
|---|---|
| CN213867205U true CN213867205U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022606577.0U Active CN213867205U (en) | 2020-11-12 | 2020-11-12 | Production facility of continuous type regeneration bituminous mixture |
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| CN (1) | CN213867205U (en) |
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- 2020-11-12 CN CN202022606577.0U patent/CN213867205U/en active Active
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