Asphalt mixing plant with double RAP rollers
By setting up virgin and recycled processing systems on the asphalt mixing plant to form two independent production systems, the problems of RAP addition ratio restrictions and insufficient production capacity were solved, and efficient production and compact equipment design were achieved.
Patent Information
- Application Number
- CN202422791175.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-15
AI Technical Summary
Existing RAP heating technology and its main building structure limit the addition ratio of RAP, resulting in insufficient production capacity of mixing equipment and waste when producing virgin and recycled aggregates at the same time.
An asphalt mixing plant with dual RAP drums is designed, which includes virgin and recycled processing systems to form two independent asphalt mixture production systems. By setting up the virgin processing system on the main mixing plant and the recycled processing systems on both sides, the RAP addition ratio and production efficiency are improved.
It achieves the goal of increasing production load at a high RAP addition ratio, reducing floor space, ensuring the normal operation of the mixing plant under high-output rated conditions, and improving the practicality and production efficiency of the equipment.
Smart Images
Figure CN223329655U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of asphalt concrete mixing equipment, and particularly relates to an asphalt mixing plant with double RAP drums. Background Art
[0002] With the rapid development of asphalt pavement construction in my country and the extensive reconstruction and renovation of high-grade roads, the recycling and reuse of recycled asphalt concrete (RAP) has garnered significant attention and widespread attention. RAP heating has become indispensable in newly built asphalt concrete mixing plants. The reuse of heated RAP saves energy, protects the environment, and creates significant social and economic value.
[0003] As customer needs increase, existing RAP heating technology and its main building structure limit the RAP addition ratio and the overall production capacity of the mixing equipment. Common parallel-type hot regeneration equipment, including split and integrated units, often only allows the RAP heating equipment to reach half of the overall capacity of the equipment. This means that the upper limit for addition is limited to 50% of the rated capacity. Increasing the addition ratio would require reducing the overall production capacity.
[0004] Furthermore, as the demand for RAP addition increases, the need for virgin aggregate production capacity decreases, yet some projects require no RAP addition. This results in a single asphalt mixing plant often being equipped with both a high-capacity virgin aggregate production system and a high-capacity RAP aggregate production system. However, in actual production, it is rare for both to operate fully within rated operating conditions simultaneously, ultimately resulting in a waste of production capacity. Utility Model Content
[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an asphalt mixing plant with double RAP drums which can improve the RAP addition ratio and RAP production capacity of the asphalt concrete mixing system.
[0006] The utility model adopts the following technical solutions:
[0007] An asphalt mixing plant with double RAP drums comprises a mixing main building, a raw material processing system arranged on the main mixing building, two regeneration processing systems arranged on both sides of the raw material processing system, and two mixing devices respectively arranged between the raw material processing system and the relative regeneration processing systems or below the two regeneration processing systems. The raw material processing system comprises a vibrating screen arranged on the main mixing building, a hot material bin arranged on the main mixing building and connected to the lower end of the vibrating screen, two raw material metering bins arranged on the main mixing building and connected to the hot material bins respectively, and two raw material chutes respectively connected between the raw material metering bins and the relative mixing devices.
[0008] Furthermore, the regeneration processing system includes a regeneration drying drum inclined on the stirring main building, a discharge box arranged at the discharge end of the regeneration drying drum, a burner connected to the side of the discharge box to supply heat to the discharge box, a regeneration storage bin connected to the lower end of the discharge box, and a regeneration metering bin arranged at the lower end of the regeneration storage bin and connected to the relative stirring device.
[0009] Furthermore, the regeneration processing system also includes an asphalt scale arranged on the mixing main building and an asphalt chute connected between the asphalt scale and the relative mixing device.
[0010] Furthermore, the regeneration processing system also includes a powder scale arranged on the mixing main building and a powder chute connected between the powder scale and the relative mixing device.
[0011] Furthermore, the regeneration processing system also includes a combustion chamber connected between the burner and the discharge box.
[0012] Furthermore, the regeneration processing system also includes a feed box arranged at the feed end of the regeneration drying drum.
[0013] Furthermore, two discharge ports are relatively arranged at the lower end of the hot material bin, and the two original metering bins are respectively arranged relatively to the two discharge ports.
[0014] Furthermore, it also includes two finished product bins arranged on the main mixing building and connected to the two mixing devices respectively.
[0015] From the above description of the utility model, it can be seen that compared with the prior art, the beneficial effects of the utility model are: the present application defines the specific structure of the asphalt mixing plant with double RAP drums, and through the cooperation between the original treatment system arranged on the main mixing plant and the two regeneration treatment systems relatively arranged on both sides of the original treatment system, the asphalt mixing plant forms two independent asphalt mixture production systems, the RAP production volume is large, and the RAP addition ratio is improved. At the same time, the production load of the original treatment system is increased when the RAP addition ratio is high, so that the asphalt mixing plant can operate normally under high output and rated working conditions. When in use, it is possible to select to work simultaneously or only one of the asphalt mixture production systems according to the specific production working conditions, thereby improving the practicality of the utility model; in addition, the two regeneration treatment systems of the present application are arranged on both sides of the original treatment system, with a compact structure, which reduces the floor space of the main mixing plant. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Schematic diagram of the asphalt mixing plant structure Figure 1 .
[0017] Figure 2 Schematic diagram of the asphalt mixing plant structure Figure 2 .
[0018] Figure 3 Schematic diagram of the asphalt mixing plant structure Figure 3 .
[0019] Figure 4 for Figure 1 Enlarged schematic diagram of point A in the middle.
[0020] In the figure: 1- mixing main building, 2- raw material processing system, 21- vibrating screen, 22- hot material silo, 23- raw material metering silo, 24- raw material chute, 25- discharge port, 3- regeneration processing system, 31- regeneration drying drum, 311- combustion chamber, 312- feed box, 32- discharge box, 33- burner, 34- regeneration storage silo, 35- regeneration metering silo, 36- asphalt scale, 37- asphalt chute, 38- powder scale, 39- powder chute, 4- mixing device, 5- finished product silo. DETAILED DESCRIPTION
[0021] The present invention is further described below through specific implementation methods.
[0022] like Figures 1 to 4 As shown, this embodiment provides an asphalt mixing plant with double RAP drums, including a main mixing plant 1, a raw material processing system 2, two regeneration processing systems 3, two mixing devices 4 and two finished product silos 5.
[0023] The raw material processing system 2 is arranged on the mixing main building 1, and includes a vibrating screen 21 arranged on the mixing main building 1, a hot material bin 22 arranged on the mixing main building 1 and connected to the lower end of the vibrating screen 21, two raw material metering bins 23 arranged relatively on the mixing main building 1 and connected to the hot material bin 22 respectively, and two raw chutes 24 respectively connected between the raw material metering bins 23 and the relative mixing device 4; specifically, the raw material processing system 2 cooperates with the two regeneration processing systems 3 respectively, so that the asphalt mixing building forms two complete asphalt mixture production systems. In specific production work, according to specific production working conditions, it is possible to choose to use the two asphalt mixture production systems at the same time or use one of the asphalt mixture production systems alone, thereby improving the practicality of the present invention. At the same time, the two raw material metering bins 23 can be independently measured, and through the two raw chutes 24, the two raw material metering bins 23 can be independently put into the relative mixing device 4; further, two discharge ports 25 are relatively arranged at the lower end of the hot material bin 22, and the two raw material metering bins 23 are respectively arranged relatively to the two discharge ports 25.
[0024] There are two regeneration processing systems 3, which are relatively arranged on both sides of the original processing system 2, including a regeneration drying drum 31 inclined on the mixing main building 1, a discharge box 32 arranged at the discharge end of the regeneration drying drum 31, a burner 33 connected to the side of the discharge box 32 for supplying heat to the discharge box 32, a regeneration storage bin 34 connected to the lower end of the discharge box 32, and a regeneration metering bin 35 arranged at the lower end of the regeneration storage bin 34 and connected to the relative mixing device 4; through the two regeneration processing systems, the RAP production of the asphalt mixing plant is large, the RAP addition ratio is improved, and at the same time, the production load of the original processing system 2 under the condition of high RAP addition ratio is increased, so that the asphalt mixing plant can operate normally under high output and rated working conditions; wherein, the two regeneration processing systems 3 are arranged on both sides of the original processing system 2, with a compact structure, which reduces the floor space of the mixing main building 1; specifically, when the regeneration drying drum 31 is in use, R The AP material enters from the feed end of the regeneration drying drum 31, and the burner 33 is located at the other end of the regeneration drying drum 31. The RAP material moves in the opposite direction to the hot air. The RAP material comes into contact with the hot air multiple times during the movement, so that the RAP material is evenly heated, achieving countercurrent drying, and improving the thermal efficiency of the regeneration drying drum 31; further, the regeneration processing system 3 also includes an asphalt scale 36 arranged on the mixing main building 1, an asphalt chute 37 connected between the asphalt scale 36 and the relative stirring device 4, a powder scale 38 arranged on the mixing main building 1, and a powder chute 39 connected between the powder scale 38 and the relative stirring device 4; further, the regeneration processing system also includes a combustion chamber 311 connected between the burner 33 and the discharge box 32; the hot air is evenly mixed in the regeneration drying drum 31 through the combustion chamber 311; further, the regeneration processing system 3 also includes a feed box 312 arranged at the feed end of the regeneration drying drum 31.
[0025] There are two stirring devices 4 , which are respectively arranged between the original treatment system 2 and the relative regeneration treatment system 3 or below the two regeneration treatment systems 3 .
[0026] There are two finished product warehouses 5, which are arranged on the mixing main building 1 and are connected to the two mixing devices 4 respectively.
[0027] To sum up, with the help of the above-mentioned technical scheme of the present invention, through the cooperation between the original treatment system 2 arranged on the mixing main building 1 and the two regeneration treatment systems 3 relatively arranged on both sides of the original treatment system 2, the asphalt mixing plant forms two independent asphalt mixture production systems, the RAP production volume is large, and the RAP addition ratio is improved. At the same time, the production load of the original treatment system 2 under the condition of high RAP addition ratio is increased, so that the asphalt mixing plant can operate normally under high output and rated working conditions. When in use, it is possible to select one of the asphalt mixture production systems to work simultaneously or only one of them according to the specific production working conditions, thereby improving the practicality of the present invention; in addition, the two regeneration treatment systems 3 of the present application are arranged on both sides of the original treatment system 2, with a compact structure, which reduces the floor area of the mixing main building 1.
[0028] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of implementation of the present invention. In other words, equivalent changes and modifications made according to the scope of application of the present invention and the contents of the specification should still fall within the scope of the present invention.
Claims
1. An asphalt mixing plant with double RAP drums, characterized by: It includes a mixing main building, a primary processing system arranged on the main mixing building, two regeneration processing systems arranged on both sides of the primary processing system, and two mixing devices respectively arranged between the primary processing system and the relative regeneration processing systems or below the two regeneration processing systems. The primary processing system includes a vibrating screen arranged on the main mixing building, a hot material bin arranged on the main mixing building and connected to the lower end of the vibrating screen, two primary metering bins arranged on the main mixing building and connected to the hot material bins respectively, and two primary chutes respectively connected between the primary metering bins and the relative mixing devices.
2. The double RAP drum asphalt mixing plant according to claim 1, characterized in that: The regeneration processing system includes a regeneration drying drum inclined on the mixing main building, a discharge box arranged at the discharge end of the regeneration drying drum, a burner connected to the side of the discharge box to supply heat to the discharge box, a regeneration storage bin connected to the lower end of the discharge box, and a regeneration metering bin arranged at the lower end of the regeneration storage bin and connected to the relative stirring device.
3. The double RAP drum asphalt mixing plant according to claim 2, characterized in that: The regeneration processing system further comprises an asphalt scale arranged on the mixing main building and an asphalt chute connected between the asphalt scale and the relative mixing device.
4. The double RAP drum asphalt mixing plant according to claim 2, characterized in that: The regeneration processing system further comprises a powder material scale arranged on the mixing main building and a powder material chute connected between the powder material scale and the relative mixing device.
5. The double RAP drum asphalt mixing plant according to claim 2, characterized in that: The regeneration processing system further includes a combustion chamber connected between the burner and the discharge box.
6. The double RAP drum asphalt mixing plant according to claim 2, characterized in that: The regeneration processing system further comprises a feed box arranged at the feed end of the regeneration drying drum.
7. The double RAP drum asphalt mixing plant according to claim 1, characterized in that: The lower end of the hot material bin is oppositely provided with two discharge ports, and the two original metering bins are respectively oppositely provided with the two discharge ports.
8. The double RAP drum asphalt mixing plant according to claim 1, characterized in that: It also includes two finished product bins arranged on the main mixing building and connected to the two mixing devices respectively.