CN212077543U - Asphalt mixing station based on microwave heating - Google Patents
Asphalt mixing station based on microwave heating Download PDFInfo
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- CN212077543U CN212077543U CN202020451981.2U CN202020451981U CN212077543U CN 212077543 U CN212077543 U CN 212077543U CN 202020451981 U CN202020451981 U CN 202020451981U CN 212077543 U CN212077543 U CN 212077543U
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Abstract
The utility model discloses an asphalt mixing station based on microwave heating, wherein a proportioning machine unit comprises an RAP material proportioning machine, a new aggregate proportioning machine and a belt conveyer, and the RAP material proportioning machine and the new aggregate proportioning machine are connected by the belt conveyer; the mixture stirring equipment comprises a material distribution bin, a microwave heating device and a reclaimed material stirring unit; the material distribution bin is connected with the other end of the aggregate lifting unit; the microwave heating device comprises a plurality of microwave heating units, a plurality of conveying circular pipes are arranged at the bottom of the material distribution bin, and the plurality of conveying circular pipes are respectively connected with one microwave heating unit; the discharge openings at the bottoms of the microwave heating units are connected with the reclaimed material stirring unit; the finished product material lifting unit is connected with the regenerated material stirring unit; the finished product bin is connected with the finished product lifting unit. The device adopts pitch mixing station as the platform, can realize heating, stirring bituminous mixture, automatic feed and automatic discharging simultaneously, is the equipment of microwave heating bituminous mixture.
Description
Technical Field
The utility model belongs to the technical field of the road surface maintenance equipment, concretely relates to pitch blending station based on microwave heating.
Background
At present, the traditional technical means such as forced intermittent asphalt mixture stirring equipment is widely applied to production, plant-mixed hot recycling asphalt mixture stirring equipment is developed and put into production, and the traditional heating mode is used for heating the mixture. The traditional technical means comprises flame, hot air, electric heat, steam, infrared rays and the like, wherein heat is transmitted into a heated object from the outside by utilizing a heat conduction or heat radiation principle to gradually raise the central temperature of the object, called as external heating, a certain time is needed to make the central part reach the required temperature, the time required by the object with poor heat conductivity is longer, the object is heated by open fire, the heating is too high, so that the activity of asphalt is lost, the service performance and the service life are influenced, the heated object is conveyed to a construction site by a vehicle, the conveying distance is longer, the heat dissipation of the asphalt mixture is fast, the temperature of the asphalt mixture is often difficult to meet the construction requirement after the object reaches the construction site, the asphalt is heated by the traditional technical means, more toxic gas can be generated during construction, the air is seriously polluted, and the health of personnel is threatened. Most importantly, the RAP addition amount of the conventional asphalt plant mixing hot recycling mixing station is generally about 30%, the heating efficiency is low, the RAP addition amount is low, and the actual requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that current mix station heating efficiency is low and RAP mixes the volume low, the utility model provides a mixing volume that heating efficiency is high, heating quality is good, improve RAP, the green of not only energy saving but also non-staining environment mixes the station based on microwave heating's pitch. The device adopts pitch mixing station as the platform, can realize heating, stirring bituminous mixture, automatic feed and automatic discharging simultaneously, is the equipment of microwave heating bituminous mixture.
In order to achieve the above object, the utility model adopts the following technical means:
a microwave heating based asphalt mixing station comprising:
the batching machine unit comprises an RAP material batching machine, a new aggregate batching machine and a belt transmission device, wherein the RAP material batching machine and the new aggregate batching machine are connected by the belt transmission device;
the aggregate lifting unit is connected with the belt conveying device at one end;
the mixing material stirring equipment comprises a material distribution bin, a microwave heating device and a reclaimed material stirring unit which are sequentially arranged from top to bottom; the material distribution bin is connected with the other end of the aggregate lifting unit; the microwave heating device comprises a plurality of microwave heating units, a plurality of conveying circular pipes are arranged at the bottom of the material distribution bin, and the plurality of conveying circular pipes are respectively connected with one microwave heating unit; the discharge openings at the bottoms of the microwave heating units are connected with the reclaimed material stirring unit; the reclaimed material stirring unit is connected with the powder storage unit, the asphalt storage unit and the regenerant storage unit through a conveying device;
one end of the finished product material lifting unit is connected with the reclaimed material stirring unit;
and the finished product bin is connected with the other end of the finished product lifting unit.
Preferably, RAP material proportioning machine and new aggregate proportioning machine all are provided with automatic blending device and weighing device, and automatic blending device includes conveyer device and feeding motor, and feeding motor drives conveyer device and will gather materials and deliver to weighing device after and carry to the lift unit that gathers materials through belt conveyer again.
Preferably, the material distribution bin is of an inverted trapezoidal structure, and the bottom of the material distribution bin is divided into a plurality of small material collection bins in a partition mode; the bottom of each small aggregate bin is provided with a funnel, the bottom of each funnel is provided with a conveying circular pipe, and the circular pipe conveys aggregate leaked from the small aggregate bins to the microwave heating unit.
Preferably, a roller device for leveling aggregate is arranged above the partition.
Preferably, the microwave heating unit comprises a heating furnace body, a microwave generator and air cooling equipment, the microwave generator and the air cooling equipment are arranged around the heating furnace body, the dustproof filter screen is arranged around the microwave heating furnace, the microwave heating furnace is a vertical furnace, the stirring motor is arranged at the top of the microwave heating furnace, and the discharge opening is formed in the bottom of the microwave heating furnace.
Preferably, the reclaimed material stirring unit comprises a stirring motor and a stirring blade, and the stirring motor drives the stirring blade to rotate through a stirring shaft.
Preferably, the aggregate lifting unit and the finished product lifting unit are bucket-lifting type hoists.
Preferably, the mix stirring apparatus further comprises:
the dust removal device is provided with a plurality of three-way circular pipes through a main pipe, and the three-way circular pipes are respectively connected with the microwave heating device;
and the cooling device is provided with a plurality of tee joints through a main pipe, and a plurality of tee joint round pipes are respectively connected with the microwave heating device.
Preferably, the dust removal device adopts a magnetized water mist dust removal device; the cooling device cools the microwave heating device by using water circulation.
Preferably, a heat-insulating layer is arranged outside the finished product bin; the discharging opening at the bottom of the microwave heating unit is provided with the vibrating device, so that the problem that old materials are adhered due to heating, and the discharging opening is difficult to discharge or is blocked is effectively solved.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has unique advantages of microwave heating, and mainly has the following points.
1) The problem of asphalt aging in the RAP heating process is solved.
The RAP is preferably heated at about 130 ℃ through verification, and the heating time cannot be too long. Traditional mixing station all adopts the heat radiation principle, and the material is from outside-in heating, and it is inhomogeneous to be heated, and the interior outer temperature of short material of heat time is inconsistent, and heat time can cause the pitch ageing for a long time. The microwave heating has the advantages of simultaneous heating inside and outside, high heating speed and more uniform heating.
2) Solving the problem of bonding in the RAP heating process.
The production process of the traditional mixing station adopts a mode of separately heating RAP and new aggregate, and the bonding phenomenon generally exists. The microwave stirring heating kettle simultaneously heats new and old materials which are uniformly mixed, RAP and new aggregate are mutually rubbed in the heating and stirring process, and asphalt in the RAP is uniformly coated on the surface of the new aggregate after being melted, so that the problem of mixture bonding is solved, and the regeneration of a regenerant on the performance of the asphalt is more facilitated.
3) The production of asphalt smoke is reduced, the performance of asphalt is protected, and the service life of a smoke disposal system is prolonged.
According to the technical Specification for road asphalt pavement construction (JTJ032-94), the heating temperature of the road petroleum asphalt is 150 ℃ and 170 ℃. The heating temperature of the fresh aggregate of the traditional mixing station reaches 190-220 ℃, a large amount of asphalt smoke is generated in the mixing process of the fresh aggregate, the reclaimed material and the fresh asphalt, and not only is pollution caused, but also the aging of the asphalt is caused. The service life of the induced air system is seriously influenced in a high-temperature state; and the heating temperature of the mixture is controlled within 150 ℃ by adopting microwave heating, only trace smoke is generated, the performance of the asphalt is protected, and the service life of a smoke disposal system is prolonged.
4) Energy saving and consumption reduction
Because the heating temperature of the mixture is lower than that of the traditional heating temperature, the energy-saving and consumption-reducing effects are obvious.
5) The heat preservation time of the asphalt concrete is longer:
in order to ensure that the asphalt concrete reaches the temperature of a construction site in the traditional mixing station, the new aggregate is heated to 190-220 ℃, while the microwave heating is uniform in heating and longer in heat preservation time, the material heated to 130 ℃ is proved to be paved in the open air at the ambient temperature of 19 ℃ for 7cm, and the surface temperature measured after 30 minutes is 95 ℃. Meanwhile, the method is verified that when the microwave mixing station is used for asphalt concrete plant mixing heat regeneration, the mixture is heated to 150 ℃ at most.
6) By using a plant mixing heat regeneration mixing station of a vertical microwave heating stirring kettle, the RAP can be maximally utilized by 100 percent.
Drawings
FIG. 1 is a schematic elevation view of the structure of a station for mixing asphalt based on microwave heating according to the present invention.
FIG. 2 is a schematic plan view of the structure of the asphalt mixing station based on microwave heating according to the present invention.
Fig. 3 is a schematic structural view of the microwave heating device of the present invention.
Wherein, 1, a proportioning machine unit; 2. an aggregate lifting unit; 3. a material distributing bin; 4. a microwave heating device; 5. A reclaimed material stirring unit; 6. a dust removal device; 7. a cooling device; 8. a powder storage unit; 9. an asphalt storage unit; 10. a regenerant storage unit; 11. a finished product material lifting unit; 12. a finished product bin; 13. an electronic control unit; 14. a microwave generator; 15. a stirring kettle, 16 and a discharge opening; 17. a stirring motor; 18. a microwave power supply controller.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
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. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The structure and the operation principle of the present invention will be further described in detail with reference to fig. 1 and 2.
As shown in fig. 1 and 2, the present invention relates to a microwave heating-based asphalt mixing station, comprising:
proportioning machine unit 1, proportioning machine unit 1 contains RAP material proportioning machine, new aggregate proportioning machine and belt conveyer, and the proportioning machine is provided with automatic blending, weighing device, and automatic blending includes conveyer device and feeding motor, will gather materials through the belt and carry to gathering materials hoisting unit 2.
A microwave heating device 4, wherein the microwave heating device 4 comprises a plurality of microwave heating units, each heating unit is a microwave heating furnace, the microwave heating furnace comprises a heating furnace body, a microwave generator and air cooling equipment, the microwave generator and the air cooling equipment are arranged around the heating furnace body, the dustproof filter screen is arranged around the microwave heating furnace, the microwave heating furnace is a vertical furnace, the stirring motor is arranged at the top of the microwave heating furnace, under the drive of a stirring motor, the stirring shaft rotates positively to drive the asphalt to heat while stirring, after the heating is finished, the stirring motor drives the stirring shaft to rotate reversely, at the moment, the discharge port at the bottom is opened under the driving of the discharge motor to start discharging, and after the mixture is heated by the microwave oven, the mixture is discharged to the reclaimed material stirring unit 5 through a discharging device at the bottom of the microwave oven, and after the discharging is finished, a discharging opening starts to be closed, and the mixture returns to an initial state to wait for next heating.
The reclaimed material stirring unit 5 is characterized in that the heated aggregate is heated by the microwave heating device 4 and then is discharged into the reclaimed material stirring unit 5, powder, asphalt, a regenerant and the like in the powder storage unit 8, the asphalt storage unit 9 and the regenerant storage unit 10 are conveyed into the reclaimed material stirring unit 5 through the conveying device and are stirred with the asphalt mixture conveyed by microwave heating, the reclaimed material stirring unit 5 comprises a stirring motor and stirring blades, and the stirring motor drives the stirring blades to rotate through the stirring shaft.
The dust removing device 6 and the microwave heating device 4 release smoke dust, and the smoke dust is adsorbed by the activated carbon adsorption dust removing device 6.
And the cooling device 7 cools the microwave heating devices (4) by utilizing water circulation, and an inlet pipe and an outlet pipe of each microwave heating device (4) are controlled by a separate water pump.
The bottom of the main stirring unit is provided with a discharge opening, and the discharge opening discharges materials to the finished material lifting unit 11.
And the finished product material lifting unit 11 lifts the finished product material into the finished product bin 12 through the lifting hopper by the finished product material lifting unit 11.
Finished product feed bin 12, finished product feed bin 12 are equipped with the heat preservation, and finished product feed bin 12 bottom sets up the discharge opening, can unload finished product material to the haulage vehicle in through the discharge opening.
And the electronic control unit 13, wherein all the electronic control devices are controlled by the intelligent electronic control unit 13.
As shown in fig. 3, the microwave heating device 4 includes a stirring tank 15 and a stirring motor 17, a plurality of microwave generators 14 are disposed on the periphery of the stirring tank 15, the stirring motor 17 is disposed on one side of the bottom of the stirring tank 15, a discharge opening 16 is disposed on the other side of the bottom of the stirring tank 15, and the whole microwave heating device 4 is disposed in a shielding case. Be provided with vibrator on discharge opening 16, effectively solve old material because of the adhesion of heating production, lead to the feed opening unloading difficulty or block up.
At first will gather materials through belt means and carry to gathering materials in the lifting machine hopper, then gather materials and promote to carry to dividing feed bin 3 through oblique belt after the top, divide feed bin 3 bottom to separate into ten little aggregate bins for adopting the form of cutting off, it is provided with the floating roller bearing to cut off the top, the primary function is that the top is gathered materials and is sent to dividing feed bin 3 back, can pile up into the convex form at 3 middle parts of branch feed bin, adopt the roller bearing can divide the floating of gathering materials equally to each little aggregate bin, little aggregate bin lower part sets up to the funnel structure, the pipe is connected to the funnel, the pipe is carried and is put to microwave heating by gathering materials that the feed bin leaks down.
The working process of the asphalt mixing station based on microwave heating comprises the following steps:
at first will gather materials through band conveyer and carry to gathering materials in the lifting machine feed inlet that gathers materials, then gather materials and carry to dividing feed bin 3 through the feed opening after promoting to the top, divide 3 bottoms in feed bin to separate into ten little feed bins for adopting the form of cutting off, cut off the top and set up the primary function and gather materials and deliver to dividing feed bin 3 after, can pile up into the convex at 3 middle parts in feed bin, adopt the cylinder can be evened out to each little feed bin that gathers materials with gathering materials, little feed bin lower part sets up to the funnel structure, the pipe is connected to the funnel, the pipe is carried by the feed bin hourglass gather materials to the microwave heating cauldron down in.
And the power units are driven by electric power, the power is connected into a high-voltage power supply, and all electric control equipment is controlled by the intelligent electric control unit 13.
The aggregate lifting unit 2 is mainly a bucket lifting type lifter, and aggregate is conveyed to the material distributing bin 3 through the lifter.
Microwave heating agitated vessel, microwave heating agitated vessel contains ten microwave heating units, and every heating unit is a microwave heating stirred vessel promptly, and microwave heating stirred vessel includes furnace body, microwave generator, agitator and water cooling plant, set up microwave generator and water cooling plant around the furnace body, set up dustproof filter screen around the microwave heating furnace, microwave heating stirred vessel is vertical, and microwave heating stirred vessel top sets up agitator motor, and under agitator motor's drive, the (mixing) shaft forward rotation drives pitch stirring while heating, treats to heat to 130 ℃, and the pneumatic control door of bottom discharge opening is opened and is begun to unload, unloads to the pitch mixture agitator tank through microwave heating stirred vessel's feed opening, and the back is accomplished in unloading, and the discharge opening begins to close, returns to initial condition and waits for next heating.
The heated aggregate is heated by the microwave heating device 4 and then is unloaded to the reclaimed material stirring unit 5, powder, asphalt, a regenerant and the like are conveyed to the reclaimed material stirring unit 5 through the conveying device and are stirred with the asphalt mixture conveyed by the microwave heating, the reclaimed material stirring unit 5 comprises a stirring motor and stirring blades, and the stirring motor drives the stirring blades to rotate through the stirring shaft. The bottom of the main stirring unit is provided with a discharge opening, and the discharge opening discharges materials to the finished material lifting unit 11.
The finished product material lifting unit 11 lifts the finished product material into the finished product bin 12 through a lifting hopper.
The finished product bin 12 is provided with a heat preservation layer, the bottom of the finished product bin 12 is provided with a discharge opening, and finished product materials can be discharged into a transport vehicle through the discharge opening.
The utility model is characterized in that:
firstly), the microwave is utilized to heat the old asphalt mixture, and because the microwave heating mechanism is adopted, the internal temperature of the aggregate heated by the asphalt mixture is slightly higher than the external temperature, so that the material cooling speed is slow, the constant temperature time is long, and the operation under the condition of lower environmental temperature is facilitated.
Two) microwave parallel connection and stable operation
The microwave heating and stirring module of the stirring station is formed by connecting a plurality of microwave heating and stirring kettles in parallel, and is not influenced by the stability of components. The normal operation of the microwave heating stirring kettle is not influenced when a magnetron in any microwave heating stirring kettle breaks down, and the normal operation of the whole microwave heating stirring module is not influenced when any microwave heating stirring kettle breaks down.
And thirdly), microwave heaters in the ultra-large microwave heating mixing station are connected in parallel and can be controlled jointly or independently, the number of working stations of the microwave heaters can be flexibly adjusted according to the conditions of field personnel and machines in actual engineering use, so that the yield of the asphalt mixture of the whole mixing station is controlled and is matched with the field construction speed, and the ultra-large mixing station has the capacity and the speed of the mixing stations with various traditional models.
Fourth) the test proves that the microwave has the repairing function to the asphalt in the RAP material, the microwave heating can partially improve the performance index of the old asphalt and improve the anti-water damage capability of the regenerated asphalt mixture.
Fifthly), the microwave heating of the old asphalt mixture is not easy to cause secondary aging and blue smoke, and the pollution is low and the environment is protected.
Sixthly) the microwave heating stirring kettle is provided with a moisture discharging port, and a centrifugal fan is arranged on the microwave heating stirring kettle to collect and treat smoke dust generated in the heating process.
Seventhly), the mixing station is a green environment-friendly mixing station, the microwave heating stirring kettle is used for heating the asphalt mixture and adopts a totally-enclosed structure, and the risk of microwave leakage is avoided.
Eighthly), all the operation processes can be controlled by a computer.
The above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify or equally replace the specific embodiments of the present invention, and these modifications or equivalents do not depart from the spirit and scope of the present invention, which is all within the protection scope of the claims of the present invention.
Claims (10)
1. An asphalt mixing station based on microwave heating, characterized by comprising:
the batching machine unit (1), the batching machine unit (1) comprises an RAP material batching machine, a new aggregate batching machine and a belt transmission device, and the RAP material batching machine and the new aggregate batching machine are connected by the belt transmission device;
the aggregate lifting unit (2), one end of the aggregate lifting unit (2) is connected with the belt conveying device;
the mixing material stirring equipment comprises a material distribution bin (3), a microwave heating device (4) and a reclaimed material stirring unit (5) which are sequentially arranged from top to bottom; the material distribution bin (3) is connected with the other end of the aggregate lifting unit (2); the microwave heating device (4) comprises a plurality of microwave heating units, a plurality of conveying circular pipes are arranged at the bottom of the material distribution bin (3), and the plurality of conveying circular pipes are respectively connected with one microwave heating unit; a plurality of discharging openings at the bottom of the microwave heating unit are connected with the reclaimed material stirring unit (5); the reclaimed material stirring unit (5) is connected with the powder storage unit (8), the asphalt storage unit (9) and the regenerant storage unit (10) through a conveying device;
a finished product lifting unit (11), wherein one end of the finished product lifting unit (11) is connected with the reclaimed material stirring unit (5);
and the finished product bin (12), the finished product bin (12) is connected with the other end of the finished product lifting unit (11).
2. The asphalt mixing station based on microwave heating according to claim 1, characterized in that the RAP material batching machine and the new aggregate batching machine are provided with an automatic batching device and a weighing device, the automatic batching device comprises a conveying belt device and a feeding motor, and the feeding motor drives the conveying belt device to convey aggregate to the weighing device and then to the aggregate lifting unit (2) through a belt conveying device.
3. The microwave heating-based asphalt mixing station according to claim 1, wherein the distribution bin (3) is of an inverted trapezoidal structure, and the bottom of the distribution bin is divided into a plurality of small collection bins in a partition mode; the bottom of each small aggregate bin is provided with a funnel, the bottom of each funnel is provided with a conveying circular pipe, and the circular pipe conveys aggregate leaked from the small aggregate bins to the microwave heating unit.
4. A microwave heating-based asphalt mixing station as defined in claim 3, wherein roller means for leveling aggregate material are provided above said partition.
5. The microwave heating-based asphalt mixing station according to claim 1, wherein the microwave heating unit comprises a heating furnace body, a microwave generator and an air cooling device, the microwave generator and the air cooling device are arranged around the heating furnace body, a dustproof filter screen is arranged around the heating furnace body, the heating furnace body is a vertical furnace, a stirring motor is arranged at the top of the heating furnace body, and a discharge opening is formed at the bottom of the heating furnace body.
6. The asphalt mixing station based on microwave heating according to claim 1, characterized in that the reclaimed material mixing unit (5) comprises a mixing motor and a mixing blade, and the mixing motor drives the mixing blade to rotate through a mixing shaft.
7. A microwave heating-based asphalt mixing station according to claim 1, characterized in that the aggregate hoisting unit (2) and the finished product hoisting unit (11) are bucket elevators.
8. The microwave heating-based asphalt mixing station as defined in claim 1 wherein said mix stirring apparatus further comprises: a dust removal device (6) and a cooling device (7);
the dust removal device (6) is provided with a plurality of three-way circular pipes through a main pipe, and the three-way circular pipes are respectively connected with the microwave heating device (4);
the cooling device (7) is provided with a plurality of tee joints through a main pipe, and a plurality of tee joint round pipes are respectively connected with the microwave heating device (4).
9. A plant for mixing asphalt based on microwave heating according to claim 8, characterized in that said dust-removal means (6) are dust-removal means using magnetized water mist; the cooling device (7) cools the microwave heating device (4) by using water circulation.
10. The microwave heating-based asphalt mixing station according to claim 1, characterized in that an insulating layer is arranged outside the finished product bin (12); and a vibration device is arranged at a discharge port at the bottom of the microwave heating unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020451981.2U CN212077543U (en) | 2020-03-31 | 2020-03-31 | Asphalt mixing station based on microwave heating |
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| CN202020451981.2U CN212077543U (en) | 2020-03-31 | 2020-03-31 | Asphalt mixing station based on microwave heating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113564983A (en) * | 2021-08-31 | 2021-10-29 | 陕西中霖沥青路面养护科技有限公司 | Microwave thermal regeneration asphalt mixing station capable of infinitely adjusting mixing ratio of new and old materials |
| CN116876296A (en) * | 2023-07-13 | 2023-10-13 | 江苏海洋大学 | Heating, metering, dehumidifying and throwing device for fine powder of rich oil RAP (RAP) concentrate |
-
2020
- 2020-03-31 CN CN202020451981.2U patent/CN212077543U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113564983A (en) * | 2021-08-31 | 2021-10-29 | 陕西中霖沥青路面养护科技有限公司 | Microwave thermal regeneration asphalt mixing station capable of infinitely adjusting mixing ratio of new and old materials |
| CN116876296A (en) * | 2023-07-13 | 2023-10-13 | 江苏海洋大学 | Heating, metering, dehumidifying and throwing device for fine powder of rich oil RAP (RAP) concentrate |
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