CN115748369A - Production equipment and process of foamed asphalt plant-mixed cold-recycling mixture - Google Patents
Production equipment and process of foamed asphalt plant-mixed cold-recycling mixture Download PDFInfo
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- CN115748369A CN115748369A CN202211509202.XA CN202211509202A CN115748369A CN 115748369 A CN115748369 A CN 115748369A CN 202211509202 A CN202211509202 A CN 202211509202A CN 115748369 A CN115748369 A CN 115748369A
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- cement
- asphalt
- foamed asphalt
- mixer
- aggregate
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- 239000010426 asphalt Substances 0.000 title claims abstract description 92
- 239000000203 mixture Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000008569 process Effects 0.000 title claims abstract description 7
- 238000004064 recycling Methods 0.000 title description 10
- 239000004568 cement Substances 0.000 claims abstract description 67
- 239000012615 aggregate Substances 0.000 claims abstract description 41
- 238000003756 stirring Methods 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims description 18
- 239000003638 chemical reducing agent Substances 0.000 claims description 14
- 238000005303 weighing Methods 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 10
- 238000005187 foaming Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
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Abstract
The invention discloses production equipment and a process for a cold recycled mixture of foamed asphalt plant-mix, which comprise an aggregate proportioning system, an asphalt supply system, a cement supply system, a water supply system and a graded stirring system, wherein the graded stirring system comprises a primary stirrer and a secondary stirrer; aggregate proportioning system, cement feed system and water supply system are connected with the one-level mixer respectively, the one-level mixer is used for stiring aggregate, water, cement in advance, the second grade mixer is connected with the one-level mixer, and the top of second grade mixer is equipped with foamed asphalt apparatus for producing, foamed asphalt apparatus for producing and pitch feed system are connected, the second grade mixer is used for fully mixing material mixture, foamed asphalt to the ready-mixed. The method can give full play to the utilization value of the old milling material of the asphalt pavement, and the prepared finished material has stable quality, can improve the road quality and prolong the service life of the road.
Description
Technical Field
The invention relates to production equipment and a process for a plant-mixed cold recycled mixture of foamed asphalt, and belongs to the technical field of mechanical engineering.
Background
The production process of the foamed asphalt cold-recycling mixture is a core technology for producing the foamed asphalt cold-recycling mixture by using plant-mixing cold recycling equipment, and has the function of providing a high-quality asphalt recycling mixture for a construction pavement, and the quality of the foamed asphalt cold-recycling mixture is determined by the rationality of the production process of the mixture.
At present, the domestic foam asphalt plant-mixing cold recycling market is monopolized by foreign equipment, and domestic application is still blank. The foamed asphalt cold-recycling mixture has a complex manufacturing process, the quality of finished materials is difficult to control, but the foamed asphalt cold-recycling mixture has long storage time and short curing time, can open traffic immediately after compaction, and has lower road modification and maintenance cost.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides production equipment and a production process of a cold recycled mixture of foamed asphalt plant-mix, which can give full play to the utilization value of old milled materials of an asphalt pavement, and the prepared finished material has stable quality, can improve the road quality and prolong the service life of the road.
In order to achieve the purpose, the production equipment for the plant-mixed cold-recycled mixture of the foamed asphalt comprises an aggregate proportioning system, an asphalt supply system, a cement supply system, a water supply system and a grading stirring system, wherein the grading stirring system comprises a primary stirrer and a secondary stirrer;
aggregate proportioning system, cement feed system and water supply system are connected with the one-level mixer respectively, the one-level mixer is used for stiring aggregate, water, cement in advance, the second grade mixer is connected with the one-level mixer, and the top of second grade mixer is equipped with foamed asphalt apparatus for producing, foamed asphalt apparatus for producing and pitch feed system are connected, the second grade mixer is used for fully mixing material mixture, foamed asphalt to the ready-mixed.
As an improvement, the primary stirrer and the secondary stirrer are both double horizontal shaft stirrers;
the double-horizontal-shaft stirrer comprises a motor, a speed reducer, a double-stirring shaft and stirring blades, wherein the motor is connected with the speed reducer, the speed reducer is connected with the double-stirring shaft, and the stirring blades are arranged on the double-stirring shaft.
As an improvement, an aggregate feeding groove is formed in the upper side of the feeding end of the primary stirring machine and is connected with an aggregate proportioning system, a cement feeding tee joint is arranged on the front side of the feeding end of the primary stirring machine and is connected with a cement supply system.
As an improvement, the aggregate proportioning system comprises a storage bin, an electronic belt scale, a weighing sensor, a motor and a speed reducer; the storage silo is installed at the feed end of electronic belt conveyor scale, and weighing sensor installs the discharge end at electronic belt conveyor scale, and the motor passes through the speed reducer and is connected with electronic belt conveyor scale.
As an improvement, the asphalt supply system comprises an asphalt tank, an oil unloading pool, a heat conducting oil furnace, a fuel tank, an asphalt pump and a flow meter; the liquid inlet end of the asphalt tank is connected with the oil unloading pool through a conveying pipeline and an asphalt pump, the liquid outlet end of the asphalt tank is provided with an asphalt filtering device, a flowmeter and an asphalt pump, and the fuel tank is connected with the heat-conducting oil furnace through a pipeline.
As an improvement, the cement supply system comprises a cement bin, a screw conveyor, a small cement integration bin, a cement screw feeder and a cement screw electronic scale;
the screw conveyer is arranged at the discharge end of the cement bin, the cement integrated small bin is arranged at the discharge end of the screw conveyer, the cement screw feeder controlled in a frequency conversion mode is arranged at the discharge end of the cement integrated small bin, the cement screw electronic scale is arranged at the discharge end of the cement screw feeder, and the tension sensor is arranged on the cement screw electronic scale.
As an improvement, a belt conveying system is respectively arranged between the aggregate proportioning system and the aggregate feeding groove and between the grading stirring system and the finished product material storage bin.
In addition, the invention also provides a process of production equipment for the plant-mixed cold recycled mixture of the foamed asphalt, which comprises the steps of selecting various aggregates, cement and water to be pre-stirred in a primary stirrer, pushing the pre-stirred aggregates, the cement and the water into a secondary stirrer under the action of a stirring knife, continuously spraying foamed asphalt into a foamed asphalt production device on the upper part of the feeding end of the secondary stirrer, and fully stirring the foamed asphalt and the pre-mixed mixture in the secondary stirrer to finally form a high-quality foamed asphalt recycled finished product material.
Compared with the prior art, the invention pre-stirs the aggregate, the cement and the water, avoids the phenomenon of asphalt lumps after the foamed asphalt is sprayed, solves the problem of poor asphalt coating property in the mixture, ensures that the quality of the mixture is better, improves the road quality and prolongs the service life of the road when the finished material is used for paving the road, and further reduces the maintenance and curing cost; meanwhile, the process can fully play the utilization value of the old milling material of the asphalt pavement.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of a staged stirring system according to the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a plan view of a foamed asphalt producing apparatus according to the present invention;
in the figure: 1. aggregate proportioning system, 2, belt conveyor system, 3, pitch feed system, 4, cement feed system, 5, hierarchical stirring system, 6, one-level mixer, 7, second grade mixer, 8, water supply system, 9, electrical system, 10, finished product material storage storehouse, 11, foamed asphalt apparatus for producing, 12, foaming water supply module, 13, gas circuit system, 14, aggregate feed chute, 15, cement feeding tee bend, 16, water shower pipeline, 17, foaming water nozzle, 18, foaming gas nozzle.
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. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1-5, a production apparatus for cold-mix plant recycled mixture of foamed asphalt comprises an aggregate proportioning system 1, an asphalt supply system 3, a cement supply system 4, a grading stirring system 5, a water supply system 8, an electric control system 9, a finished product storage bin 10 and a gas path system 13;
the aggregate proportioning system 1 comprises a storage bin, an electronic belt scale, a weighing sensor, a motor and a speed reducer, wherein the storage bin is arranged at the feed end of the electronic belt scale, the weighing sensor is arranged at the discharge end of the electronic belt scale, and the motor is connected with the electronic belt scale through the speed reducer;
the asphalt supply system 3 is used for storing, heating, metering and conveying high-temperature matrix asphalt and comprises an asphalt tank, an oil unloading pool, a heat-conducting oil furnace, a fuel tank, an asphalt pump, a flow meter and a conveying pipeline, wherein the liquid inlet end of the asphalt tank is connected with the oil unloading pool through the conveying pipeline and the asphalt pump, the liquid outlet end of the asphalt tank is provided with an asphalt filtering device, the flow meter and the asphalt pump, and the fuel tank is connected with the heat-conducting oil furnace through a pipeline;
the cement supply system 4 is used for storing, conveying, metering and adding cement, the cement supply system 4 comprises a cement bin, a screw conveyor, a cement integrated small bin, a variable-frequency control cement screw feeder and a cement screw electronic scale provided with a tension sensor, the screw conveyor is arranged at the discharge end of the cement bin, the cement integrated small bin is arranged at the discharge end of the screw conveyor, the variable-frequency control cement screw feeder is arranged at the discharge end of the cement integrated small bin, and a feed inlet of the cement screw electronic scale provided with the tension sensor is in flexible connection with a discharge outlet of the variable-frequency control cement screw feeder through a rubber hose;
the graded stirring system 5 comprises a primary stirrer 6 and a secondary stirrer 7, wherein the primary stirrer 6 and the secondary stirrer 7 are double horizontal shaft stirrers, and the power parts of the primary stirrer 6 and the secondary stirrer 7 are motors and speed reducers and are respectively provided with double stirring shafts and stirring blades; a cement feeding tee joint 15 is arranged above the feeding end of the primary stirrer 6, the cement feeding tee joint 15 is connected with a cement supply system 4, an aggregate feeding groove 14 is arranged above the feeding end of the primary stirrer 6, the aggregate feeding groove 14 is connected with an aggregate proportioning system 1, a foamed asphalt production device 11 is arranged at the feeding front end of the secondary stirrer 7, and the foamed asphalt production device 11 is connected with an asphalt supply system 3; wherein, the primary stirrer 6 has the function of pre-stirring all aggregates, water and cement, and the secondary stirrer 7 has the function of fully stirring the pre-stirred mixture and the foamed asphalt;
the water supply system 8 is used for conveying, metering and spraying water and comprises a water tank, a water pump and a metering spraying device, wherein the water inlet end of the water pump is positioned in the water tank, and the water outlet end of the water pump is connected with the metering spraying device;
the electric control system 9 is used for carrying out electric appliance control on the equipment;
the finished material storage bin 10 is used for temporarily storing finished materials.
As a further improvement of the embodiment, a belt conveying system 2 is respectively arranged between the aggregate proportioning system 1 and the aggregate feeding groove 14 and between the grading stirring system 5 and the finished product storage bin 10, and a water spraying pipeline 16 in a metering spraying device in a water supply system 8 is arranged in the middle of the primary stirring machine 6.
As a further improvement of the embodiment, the belt conveying system 2 comprises a frame, an electric roller, an endless conveying belt, a transmission carrier roller and a belt adjusting device;
the electric roller is arranged at the end part of the frame, the annular conveying belt is arranged on the outer surface of the electric roller, and the annular conveying belt is provided with the transmission carrier roller and the belt adjusting device, so that the belt conveying system 2 is simple in structure and more convenient to install and use.
As a further improvement of the embodiment, the finished product material storage bin 10 includes a finished product material storage bin, a material discharge bin door and a cylinder for controlling the bin door to open and close, the material discharge bin door is connected with the cylinder, and the material discharge bin door is installed on the finished product material storage bin, so that the finished product material storage bin 10 is simple in structure and more convenient to use.
As a further improvement of the embodiment, the plurality of foaming water nozzles 17 of the foamed asphalt production apparatus 11 are connected to the foaming water supply module 12 through high-pressure pipes; nine foaming water nozzles 17 are provided in the foamed asphalt producing apparatus 11 in this embodiment. Nine foaming gas nozzles 18 of the foamed asphalt production device 11 are connected with the gas circuit system 13 through high-pressure pipelines and provide stable gas sources for gas circuit execution elements in the equipment.
The production process of the invention comprises the following steps:
the electronic belt scale dynamically metered by the weighing sensor in the aggregate proportioning system 1 can realize the metering of all aggregates, and the electronic belt scale works under the driving of the motor and the speed reducer to realize the conveying and metering of the aggregates; all aggregates are metered by the aggregate proportioning system 1 and then are sent into the primary stirrer 6 by the belt conveying system 2, cement which is precisely metered is sprayed to the primary stirrer 6 by the cement feeding tee 15 which is positioned at the front end feeding port of the primary stirrer 6, at the moment, water which is precisely metered is sprayed into the primary stirrer 6 by the water spraying pipeline 16 in the middle of the primary stirrer 6, and the primary stirrer 6 pre-stirs all the aggregates, the cement and the water; enter into in the second grade mixer 7 under the propelling movement effect of the stirring sword of first-level mixer 6, spout accurate measurement foamed asphalt by foamed asphalt apparatus for producing 11 at the feed end of second grade mixer 7 and stir again after that, form high-quality foamed asphalt regeneration finished product material, send into finished product material storage storehouse 10 through belt conveyor system 2 and temporarily store waiting for the transportation of engineering vehicle.
Finally, the production process of the cold-mix plant-mixed recycled mixture of the foamed asphalt comprises the steps of adding cement and water into all aggregates for pre-stirring, and then fully stirring the aggregates with the foamed asphalt, so that the quality of finished materials is good, high-quality foamed asphalt recycled finished materials required by an asphalt pavement are guaranteed, and the old milled materials of the asphalt pavement can exert the maximum utilization value. When the finished product material is used for paving roads, the quality of the roads is improved, the service life of the roads is prolonged, and the maintenance cost is further reduced.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the invention is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (8)
1. A production device of a cold recycled mixture of foamed asphalt plant mixing comprises an aggregate proportioning system (1), an asphalt supply system (3), a cement supply system (4) and a water supply system (8), and is characterized by further comprising a grading stirring system (5), wherein the grading stirring system (5) comprises a primary stirrer (6) and a secondary stirrer (7);
aggregate proportioning system (1), cement feed system (4) and water supply system (8) are connected with one-level mixer (6) respectively, one-level mixer (6) are used for stiring aggregate, water, cement in advance, second grade mixer (7) are connected with one-level mixer (6), and the top of second grade mixer (7) is equipped with foamed asphalt apparatus for producing (11), foamed asphalt apparatus for producing (11) are connected with pitch feed system (3), second grade mixer (7) are used for fully mixing to ready-mixed material mixture, foamed asphalt.
2. The plant for the production of cold mix for foamed asphalt plants according to claim 1, characterized in that said primary mixer (6) and secondary mixer (7) are double horizontal shaft mixers;
the double-horizontal-shaft stirrer comprises a motor, a speed reducer, a double stirring shaft and stirring blades, wherein the motor is connected with the speed reducer, the speed reducer is connected with the double stirring shaft, and the stirring blades are arranged on the double stirring shaft.
3. The equipment for producing the cold recycled mixture for plant mixing of foamed asphalt according to claim 2, wherein an aggregate feeding groove (14) is formed in the upper side of the feeding end of the primary stirring machine (6), the aggregate feeding groove (14) is connected with the aggregate proportioning system (1), a cement feeding tee joint (15) is arranged on the front side of the feeding end of the primary stirring machine (6), and the cement feeding tee joint (15) is connected with the cement supply system (4).
4. The equipment for producing the cold mix for plant mixing of foamed asphalt according to claim 1, wherein the aggregate proportioning system (1) comprises a storage bin, an electronic belt scale, a weighing sensor, a motor and a speed reducer;
the storage bin is arranged at the feed end of the electronic belt scale, the weighing sensor is arranged at the discharge end of the electronic belt scale, and the motor is connected with the electronic belt scale through the speed reducer.
5. The plant for the production of cold mix-in-plant recycled mix of foamed asphalt according to claim 1, characterized in that said asphalt supply system (3) comprises an asphalt tank, an oil discharge tank, a heat-conducting oil furnace, a fuel tank, an asphalt pump, a flow meter;
the liquid inlet end of the asphalt tank is connected with the oil unloading pool through a conveying pipeline and an asphalt pump, the liquid outlet end of the asphalt tank is provided with an asphalt filtering device, a flowmeter and an asphalt pump, and the fuel tank is connected with the heat-conducting oil furnace through a pipeline.
6. The plant for producing a cold mix for plant mixing of foamed asphalt according to claim 1, characterized in that said cement supply system (4) comprises a cement silo, a screw conveyor, a small cement integrated silo, a cement screw feeder and a cement screw electronic scale;
the screw conveyer is arranged at the discharge end of the cement bin, the cement integrated small bin is arranged at the discharge end of the screw conveyer, the cement screw feeder controlled in a frequency conversion mode is arranged at the discharge end of the cement integrated small bin, the cement screw electronic scale is arranged at the discharge end of the cement screw feeder, and the tension sensor is arranged on the cement screw electronic scale.
7. The equipment for producing the cold mix for plant mixing of foamed asphalt according to claim 1, wherein a belt conveying system (2) is respectively arranged between the aggregate proportioning system (1) and the aggregate feeding chute (14) and between the grading stirring system (5) and the finished product storage bin (10).
8. A process for adopting the production equipment of the plant-mixed cold recycled mixture of the foamed asphalt as claimed in any one of claims 1 to 7, which is characterized in that various aggregates, cement and water are selected to be pre-stirred in the primary stirrer (6), then the pre-stirred aggregates, the cement and the water are pushed into the secondary stirrer (7) under the action of a stirring knife, foamed asphalt is continuously sprayed into the foamed asphalt production device (11) at the upper part of the feeding end of the secondary stirrer (7), and the foamed asphalt and the pre-mixed mixture are fully stirred in the secondary stirrer (7), and finally a high-quality foamed asphalt regenerated product material is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211509202.XA CN115748369A (en) | 2022-11-29 | 2022-11-29 | Production equipment and process of foamed asphalt plant-mixed cold-recycling mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211509202.XA CN115748369A (en) | 2022-11-29 | 2022-11-29 | Production equipment and process of foamed asphalt plant-mixed cold-recycling mixture |
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| Publication Number | Publication Date |
|---|---|
| CN115748369A true CN115748369A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211509202.XA Pending CN115748369A (en) | 2022-11-29 | 2022-11-29 | Production equipment and process of foamed asphalt plant-mixed cold-recycling mixture |
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| Country | Link |
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| CN (1) | CN115748369A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203096565U (en) * | 2013-03-13 | 2013-07-31 | 山东省路桥集团有限公司 | Plant mixing type cold recycling mixing unit |
| CN103790093A (en) * | 2014-01-06 | 2014-05-14 | 徐州徐工筑路机械有限公司 | Feeding and blending technology and feeding and blending device for cold recycling of emulsified asphalt factory |
| CN205572723U (en) * | 2016-01-29 | 2016-09-14 | 徐州徐工筑路机械有限公司 | Little storehouse cement measuring equipment of two transition |
| CN210288022U (en) * | 2019-05-14 | 2020-04-10 | 山推建友机械股份有限公司 | Fuel oil direct heating and heat conducting oil double-heating integrated asphalt tank |
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2022
- 2022-11-29 CN CN202211509202.XA patent/CN115748369A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203096565U (en) * | 2013-03-13 | 2013-07-31 | 山东省路桥集团有限公司 | Plant mixing type cold recycling mixing unit |
| CN103790093A (en) * | 2014-01-06 | 2014-05-14 | 徐州徐工筑路机械有限公司 | Feeding and blending technology and feeding and blending device for cold recycling of emulsified asphalt factory |
| CN205572723U (en) * | 2016-01-29 | 2016-09-14 | 徐州徐工筑路机械有限公司 | Little storehouse cement measuring equipment of two transition |
| CN210288022U (en) * | 2019-05-14 | 2020-04-10 | 山推建友机械股份有限公司 | Fuel oil direct heating and heat conducting oil double-heating integrated asphalt tank |
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