Asphalt mixing plant

Abstract

The invention provides an asphalt mixing plant which comprises a first forced intermittent mixer and a second forced intermittent mixer, the second forced intermittent mixer is communicated with the first forced intermittent mixer, and an asphalt outlet is selectively communicated with the first forced intermittent mixer or the second forced intermittent mixer. The regenerated material outlet is connected with the first forced intermittent stirrer in an on-off manner, the regenerated material outlet is disconnected with the first forced intermittent stirrer and the asphalt outlet is communicated with the first forced intermittent stirrer in the primary production mode, and the regenerated material outlet is communicated with the first forced intermittent stirrer in the regeneration production mode; and the asphalt outlet is communicated with the second forced intermittent stirrer. According to the asphalt mixing plant, two-stage forced intermittent stirring is adopted, the stirring effect is good, asphalt is not directly put into the first forced intermittent stirring machine but put into the second forced intermittent stirring machine, and the problems that the asphalt is heated to be volatilized, aged, stuck and the like in the regeneration production mode process are solved.

Description

Technical Field

[0001] The present application relates to the field of asphalt mixing equipment, and in particular to an asphalt mixing station. Background Art

[0002] After the asphalt pavement reaches its designed service life, its integrity will not meet the road demand, but asphalt recycling technology can make the waste meet the pavement design requirements again, saving a lot of production costs and achieving sustainable development. Hot mix asphalt mixture is the main method of asphalt concrete pavement construction at present, and it is also the key link of asphalt concrete pavement construction. It mainly relies on advanced mixing equipment to fully heat and mix the high-quality component materials after scientific and reasonable configuration to achieve accurate and uniform pavement mixture materials.

[0003] In the prior art, there is an intermittent asphalt mixing device, which discharges materials into the intermittent asphalt mixing device for mixing during the asphalt mixing process to obtain a new finished asphalt. However, due to different production modes, the mixing temperature and volatilization temperature of each material are different. If all the materials are simply mixed, some materials may volatilize unreasonably, which not only affects the environment, but also reduces the quality of the finished asphalt. Therefore, it is necessary to make improvements. Summary of the invention

[0004] The present application provides an asphalt mixing station, which adopts two-level forced intermittent mixing to improve the mixing effect. Instead of directly feeding the asphalt into a first forced intermittent mixer, the asphalt is fed into a second forced intermittent mixer, thereby avoiding the problems of asphalt volatilization, aging and sticking during the regeneration production mode.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] The present application provides an asphalt mixing station, comprising: a recycled material system for supplying recycled material, the recycled material system having a recycled material outlet; an aggregate system for supplying aggregate, the aggregate system having an aggregate outlet; an asphalt system for supplying asphalt, the asphalt system having an asphalt outlet; a first forced intermittent mixer, the first forced intermittent mixer being connected to the aggregate outlet; a second forced intermittent mixer, the second forced intermittent mixer being connected to the first forced intermittent mixer; the asphalt outlet can be selectively connected to the first forced intermittent mixer or the second forced intermittent mixer; the recycled material outlet can be connected to the first forced intermittent mixer in an on-off manner; and the asphalt mixer The mixing station is configured as follows: when in the original production mode, the recycled material outlet is disconnected from the first forced intermittent mixer, and the asphalt outlet is connected to the first forced intermittent mixer, so that the first forced intermittent mixer is used to mix the aggregate and the asphalt, and then the mixture of the two is discharged into the second forced intermittent mixer for secondary mixing; when in the regeneration production mode, the recycled material outlet is connected to the first forced intermittent mixer, and the asphalt outlet is connected to the second forced intermittent mixer, so that the first forced intermittent mixer is used to mix the recycled material and the aggregate, and then the mixture of the two is discharged into the second forced intermittent mixer to mix with the asphalt and perform secondary mixing.

[0007] As an optional embodiment, the aggregate system also includes a drying section for drying aggregates; the recycled material system also includes a recycled material input section for inputting recycled materials and a recycled material output section for outputting recycled materials, and the recycled material system is configured to selectively connect the recycled material input section with the recycled material output section, or to connect the recycled material input section with the recycled material output section through the drying section.

[0008] As an optional embodiment, the interior of the drying part defines a first drying space and a second drying space that are independent of each other, the first drying space is used to receive aggregates, and the second drying space is used to receive recycled materials.

[0009] As an optional embodiment, the recycled material input part includes a recycled material belt conveyor, a recycled material conveyor and a transition distribution hopper which are connected in sequence; the recycled material output part includes a recycled material elevator, a recycled material temporary storage bin, a recycled material metering scale and a regeneration chute which are connected in sequence; the transition distribution hopper is connected to the recycled material elevator through a first channel; the transition distribution hopper is connected to the drying part through a second channel, and the drying part is connected to the recycled material elevator through a third channel; the regeneration chute is connected to the first forced intermittent mixer through a fourth channel, and the fourth channel is provided with an on-off valve to control the on-off of the fourth channel.

[0010] As an optional embodiment, the aggregate system further includes: a drying section for drying aggregates, the drying section having a flue for flue gas to pass through; and a dust collecting section, the dust collecting section being arranged at the outlet of the flue to collect dust in the flue gas.

[0011] As an optional implementation, the asphalt mixing station further includes: a mineral powder system, which is connected to the first forced intermittent mixer to supply mineral powder.

[0012] As an optional implementation, the mineral powder system has a recovery bin, which is connected to the dust collecting part so that the collected dust can be passed into the recovery bin.

[0013] As an optional embodiment, the asphalt system also includes a three-way valve, which has an inlet, a first outlet and a second outlet. The inlet is connected to the asphalt outlet through a pipeline, the first outlet is connected to the first forced intermittent mixer through a pipeline, and the second outlet is connected to the second forced intermittent mixer through a pipeline; the asphalt mixing station is configured: when in the original production mode, the inlet is connected to the first outlet; when in the regeneration production mode, the inlet is connected to the second outlet.

[0014] As an optional implementation, the aggregate system further includes an aggregate input portion, a drying portion, and an aggregate output portion which are connected in sequence, and the aggregate output portion is connected to the first forced intermittent mixer.

[0015] As an optional embodiment, the aggregate input part includes an aggregate belt conveyor, an aggregate conveyor and a first aggregate elevator connected in sequence; the aggregate output part includes a second aggregate elevator, a vibrating screen, an aggregate bin, an aggregate scale and an aggregate buffer bucket connected in sequence.

[0016] The present application provides an asphalt mixing station, wherein a first forced intermittent mixer is connected to an aggregate outlet, a second forced intermittent mixer is connected to the first forced intermittent mixer, an asphalt outlet can be selectively connected to the first forced intermittent mixer or the second forced intermittent mixer, and a recycled material outlet can be connected to the first forced intermittent mixer in an on-off manner. When in the original production mode, the recycled material outlet is disconnected from the first forced intermittent mixer, and the asphalt outlet is connected to the first forced intermittent mixer, so that the first forced intermittent mixer is used to mix and stir the aggregate and asphalt, and then the mixture of the two is discharged into the second forced intermittent mixer for secondary mixing. When in the regeneration production mode, the recycled material outlet is connected to the first forced intermittent mixer, and the asphalt outlet is connected to the second forced intermittent mixer, so that the first forced intermittent mixer is used to mix and stir the recycled material and aggregate, and then the mixture of the two is discharged into the second forced intermittent mixer to mix with the asphalt and perform secondary mixing. The asphalt mixing station of the present application adopts a first forced intermittent mixer and a second forced intermittent mixer for secondary mixing of the mixture, the mixing time is longer, and the fluidity of the product mixture is better. In the regeneration production mode, the asphalt is not directly put into the first forced intermittent mixer, but into the second forced intermittent mixer. This can avoid problems such as heat volatilization, aging and sticking of asphalt during the regeneration production mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural framework diagram of an asphalt mixing plant provided in one embodiment of the present application.

[0019] Description of reference numerals:

[0020] 11. Recycled material outlet; 12. Aggregate outlet; 13. Asphalt outlet; 14. First channel; 15. Second channel; 16. Third channel; 17. Fourth channel; 18. On-off valve; 20. Three-way valve; 21. Inlet; 22. First outlet; 23. Second outlet. DETAILED DESCRIPTION

[0021] In the prior art, there is an intermittent asphalt mixing device, which discharges materials into the intermittent asphalt mixing device for mixing during the asphalt mixing process to obtain a new finished asphalt. However, due to different production modes, the mixing temperature and volatilization temperature of each material are different. If all the materials are simply mixed, some materials may volatilize unreasonably, which not only affects the environment, but also reduces the quality of the finished asphalt.

[0022] In order to overcome the defects in the prior art, the present application provides an asphalt mixing station, wherein the first forced intermittent mixer is connected to the aggregate outlet, the second forced intermittent mixer is connected to the first forced intermittent mixer, the asphalt outlet can be selectively connected to the first forced intermittent mixer or the second forced intermittent mixer, and the recycled material outlet can be connected to the first forced intermittent mixer in an on-off manner. When in the original production mode, the recycled material outlet is disconnected from the first forced intermittent mixer, and the asphalt outlet is connected to the first forced intermittent mixer, so that the first forced intermittent mixer is used to mix and stir the aggregate and asphalt, and then the mixture of the two is discharged into the second forced intermittent mixer for secondary mixing. When in the regeneration production mode, the recycled material outlet is connected to the first forced intermittent mixer, and the asphalt outlet is connected to the second forced intermittent mixer, so that the first forced intermittent mixer is used to mix and stir the recycled material and aggregate, and then the mixture of the two is discharged into the second forced intermittent mixer to mix with the asphalt and perform secondary mixing. The asphalt mixing station of the present application adopts a first forced intermittent mixer and a second forced intermittent mixer for secondary mixing of the mixture, the mixing time is longer, and the fluidity of the product mixture is better. In the regeneration production mode, the asphalt is not directly put into the first forced intermittent mixer, but into the second forced intermittent mixer. This can avoid problems such as heat volatilization, aging and sticking of asphalt during the regeneration production mode.

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1 , the technical solutions in the embodiments of the present application are clearly and completely described, and the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0024] The present application provides an asphalt mixing plant, which includes a recycled material system, an aggregate system and an asphalt system. The recycled material system is used to supply recycled material, and the recycled material system has a recycled material outlet 11. The aggregate system is used to supply aggregate, and the aggregate system has an aggregate outlet 12. The asphalt system is used to supply asphalt, and the asphalt system has an asphalt outlet 13.

[0025] In this embodiment, the recycled material system can regenerate the recycled old pavement through asphalt regeneration technology to obtain recycled materials. After mixing these recycled materials with new asphalt, finished asphalt that meets the requirements can be obtained, which can save a lot of production costs and achieve sustainable development.

[0026] The aggregate system is used to supply aggregates. Aggregates are also called aggregates. Aggregates can play a role of skeleton and filling in the finished asphalt, making the finished asphalt have better formability. According to the requirements of different finished asphalts, aggregates can be crushed by planing and milling, and divided into multiple grades by primary coarse screening (for example, 0-3mm aggregates, 3mm-5mm aggregates, and aggregates larger than 5mm), and then used in combination according to the formula required by the finished asphalt. In some specific embodiments, the aggregates can be crushed stone, crushed gravel, etc.

[0027] The asphalt system is used to supply asphalt. The asphalt here is new asphalt material. The new asphalt can be wrapped on the surface of the mineral material, firmly bonding the mineral material particles of various particle sizes together to form an asphalt mixture with certain strength and stability. In addition, the new asphalt can also fill the gaps between mineral material particles and adjust the performance of the asphalt mixture.

[0028] In some embodiments, the asphalt mixing plant may further include a first forced batch mixer and a second forced batch mixer.

[0029] The first forced intermittent mixer is connected to the aggregate outlet 12. The second forced intermittent mixer is connected to the first forced intermittent mixer. The asphalt outlet 13 of the asphalt system can be selectively connected to the first forced intermittent mixer or the second forced intermittent mixer.

[0030] In this embodiment, the first forced intermittent mixer and the second forced intermittent mixer are mixing equipment. Various required materials are discharged into the first forced intermittent mixer and the second forced intermittent mixer to achieve uniform mixing, and finally produce asphalt.

[0031] Furthermore, the asphalt outlet 13 can be selectively connected to the first forced intermittent mixer or the second forced intermittent mixer. The regenerated material outlet 11 can be connected to the first forced intermittent mixer in an on-off manner.

[0032] When in the original production mode, the recycled material outlet 11 is disconnected from the first forced intermittent mixer, and the asphalt outlet 13 is connected to the first forced intermittent mixer, so that the first forced intermittent mixer can be used to mix the aggregate and asphalt, and then the mixture of the two is discharged into the second forced intermittent mixer for secondary mixing.

[0033] When in the regeneration production mode, the recycled material outlet 11 is connected to the first forced intermittent mixer, and the asphalt outlet 13 is connected to the second forced intermittent mixer, so that the first forced intermittent mixer can be used to mix the recycled material and aggregate, and then the mixture of the two is discharged into the second forced intermittent mixer to be mixed with asphalt and subjected to secondary mixing.

[0034] In this embodiment, the first forced intermittent mixer is connected to the aggregate outlet 12. That is, the aggregate supplied by the aggregate system can directly enter the first forced intermittent mixer and be mixed with other materials.

[0035] The asphalt outlet 13 can be selectively connected to the first forced intermittent mixer or the second forced intermittent mixer. That is, the asphalt supplied by the asphalt system can selectively enter the first forced intermittent mixer or the second forced intermittent mixer according to different production modes. In the original production mode, the asphalt outlet 13 is connected to the first forced intermittent mixer, that is, the asphalt is first introduced into the first forced intermittent mixer for mixing with other materials, and then introduced into the second forced intermittent mixer for secondary mixing. In the regeneration production mode, the asphalt outlet 13 is connected to the second forced intermittent mixer, that is, the asphalt is directly introduced into the second forced intermittent mixer for mixing.

[0036] The regenerated material outlet 11 can be connected to the first forced intermittent mixer in an on-off manner. That is, whether the regenerated material participates in the synthesis of the finished asphalt can be controlled according to the production mode. In the original production mode, the regenerated material outlet 11 is disconnected from the first forced intermittent mixer, that is, in the original production mode, the regenerated material does not participate in the synthesis of the finished asphalt. In the regenerated production mode, the regenerated material outlet 11 is connected to the first forced intermittent mixer, that is, in the regenerated production mode, the regenerated material participates in the synthesis of the finished asphalt.

[0037] The production processes of the asphalt mixing plant in the original production mode and the regeneration production mode of this embodiment are respectively described below.

[0038] In the original production mode, the recycled material does not participate in the synthesis of the finished asphalt, and the recycled material outlet 11 is disconnected from the first forced intermittent mixer. The asphalt outlet 13 is connected to the first forced intermittent mixer. After the primary mixing, the aggregate and asphalt enter the first forced intermittent mixer for mixing. Then the mixture enters the second forced intermittent mixer for secondary mixing, and finally forms the finished asphalt.

[0039] In the regeneration production mode, the recycled material participates in the synthesis of the finished asphalt, and the recycled material outlet 11 is disconnected from the first forced intermittent mixer. The asphalt outlet 13 is connected to the second forced intermittent mixer. After the primary mixing, the aggregate and the recycled material enter the first forced intermittent mixer for mixing. Then the mixture enters the second forced intermittent mixer for secondary mixing with asphalt to finally form the finished asphalt.

[0040] In this embodiment, the asphalt mixing station uses the first forced intermittent mixer and the second forced intermittent mixer to mix the mixture twice, so the mixing time becomes longer and the fluidity of the product mixture is better.

[0041] In addition, in the recycling mode, the aggregate can be slowly pre-mixed with the recycled material. At this time, the higher temperature in the hot aggregate can heat and gasify the water vapor in part of the recycled material, avoiding the generation of a large positive pressure due to one-time heating too quickly, thereby improving the safety performance in the production process.

[0042] In addition, since the mixture is cooled during the mixing process from the first forced intermittent mixer and the process of entering the second forced intermittent mixer, the temperature of the second forced intermittent mixer is lower than that of the first forced intermittent mixer. In the regeneration production mode, the asphalt is not directly put into the first forced intermittent mixer, but into the second forced intermittent mixer, which can avoid the problems of asphalt aging and sticking in the regeneration production mode.

[0043] In some embodiments, the aggregate system may further include a drying section for drying aggregates. The recycled material system may further include a recycled material input section for inputting recycled materials and a recycled material output section for outputting recycled materials, and the recycled material system may be configured to selectively connect the recycled material input section with the recycled material output section, or to connect the recycled material input section with the recycled material output section through the drying section.

[0044] In this embodiment, the drying section is used as a device for heating aggregates in the aggregate system.

[0045] Since the recycled material system is configured to selectively connect the recycled material input part with the recycled material output part, or to connect the recycled material input part with the recycled material output part through the drying part, the recycled material can also be selectively heated by the drying part, that is, switching between cold regeneration and hot regeneration can be achieved.

[0046] When cold regeneration is required, the recycled material does not pass through the drying section, but is directly fed from the recycled material input section to the recycled material output section.

[0047] When thermal regeneration is required, the recycled material is first fed into the drying section, which heats the recycled material, and the hot recycled material then enters the recycled material input section.

[0048] In addition, cold regeneration and hot regeneration can also be set in parallel. That is, part of the recycled material output from the recycled material output section can be directly fed into the recycled material output section, and the other part can be fed into the drying section for heating first, and the hot recycled material then enters the recycled material output section. In this way, the cold and hot recycled materials are mixed in the recycled material output section to achieve the purpose of adjusting the recycled material temperature.

[0049] Furthermore, the interior of the drying part defines a first drying space and a second drying space which are independent of each other. The first drying space is used to receive aggregates, and the second drying space is used to receive recycled materials.

[0050] In some specific embodiments, the drying part can be configured as a drying drum. The drying drum defines an inner layer and an interlayer, the inner layer and the interlayer are independent spaces, the inner layer can be used as a first drying space for receiving aggregates, and the interlayer can be used as a second drying space for receiving recycled materials.

[0051] In some embodiments, the recycled material input section includes a recycled material belt conveyor, a recycled material conveyor and a transition hopper connected in sequence. The recycled material output section includes a recycled material elevator, a recycled material temporary storage bin, a recycled material metering scale and a regeneration chute connected in sequence. The transition hopper is connected to the recycled material elevator through a first channel 14. The transition hopper is connected to the drying section through a second channel 15, and the drying section is connected to the recycled material elevator through a third channel 16. The regeneration chute is connected to the first forced intermittent mixer through a fourth channel 17, and the fourth channel 17 is provided with an on-off valve 18 to control the on-off of the fourth channel 17.

[0052] When the recycled material system is cold regenerated, the path of the recycled material is: recycled material belt conveyor → recycled material conveyor → transition hopper → first channel 14 → recycled material elevator → recycled material temporary storage bin → recycled material weighing scale → regeneration chute → recycled material outlet 11.

[0053] When the recycled material system is undergoing hot regeneration, the path of the recycled material is: recycled material belt conveyor → recycled material conveyor → transition hopper → second channel 15 → drying section (second drying space) → third channel 16 → recycled material elevator → recycled material temporary storage bin → recycled material weighing scale → regeneration chute → recycled material outlet 11.

[0054] In some embodiments, the aggregate system may further include a drying section and a dust collecting section. The drying section is used to dry the aggregate, and the drying section has a flue for flue gas to pass through. The dust collecting section is arranged at the outlet of the flue to collect dust in the flue gas.

[0055] In this embodiment, the drying part has a flue, and the flue is used to heat the first drying space and the second drying space. The dust collecting part is arranged at the flue outlet to collect dust in the flue, so as to reduce the pollution of dust to the air.

[0056] In some specific embodiments, the dust collecting part may also be a combination of one or more dust removal devices including gravity dust removal, electric dust removal and bag dust removal.

[0057] Furthermore, the asphalt mixing station may also include a mineral powder system, which is connected to the first forced intermittent mixer to supply mineral powder.

[0058] During the asphalt mixing process, adding an appropriate amount of mineral powder can enhance the physical and chemical adsorption capacity of the finished asphalt, which can produce a large amount of structural asphalt, reduce the production of free asphalt, effectively improve the cohesion of the mixture interaction, and also stabilize its waterproof performance.

[0059] In the original production mode, mineral powder, aggregate and asphalt are weighed separately and put into the first forced intermittent mixer for mixing, and then the mixture is discharged into the second forced intermittent mixer for secondary mixing to finally form finished asphalt.

[0060] In the recycling production mode, mineral powder, aggregate and recycled material are weighed separately and put into the first forced intermittent mixer for mixing. Then the mixture of the three is discharged into the second forced intermittent mixer and mixed with asphalt and mixed for a second time to finally form finished asphalt.

[0061] Furthermore, the mineral powder system also has a recovery bin, which is connected to the dust collecting part so that the collected dust can be passed into the recovery bin.

[0062] That is to say, in this embodiment, the dust collected in the drying section flue gas is recovered and used as mineral powder in the asphalt synthesis process, which can fully utilize resources and reduce costs.

[0063] Specifically, the recovery bin is connected to the dust collecting part, and the dust collected in the dust collecting part can be stored in the recovery bin. The mineral powder system itself also has a mineral powder bin for storing spare mineral powder. The recovery bin and the mineral powder bin can be connected to a powder screen for screening, and the qualified mineral powder screened out can be fed into the first forced intermittent mixer through a screw feeder.

[0064] In some embodiments, the asphalt system may further include a three-way valve 20, the three-way valve 20 having an inlet 21, a first outlet 22, and a second outlet 23. The inlet 21 is connected to the asphalt outlet 13 through a pipeline, the first outlet 22 is connected to the first forced intermittent mixer through a pipeline, and the second outlet 23 is connected to the second forced intermittent mixer through a pipeline. The asphalt mixing plant is configured to connect the inlet 21 to the first outlet 22 when in the original production mode, and to connect the inlet 21 to the second outlet 23 when in the regeneration production mode.

[0065] In some specific embodiments, the asphalt system may further include an asphalt conveying unit and an asphalt heating unit.

[0066] Furthermore, the asphalt delivery unit may further include an asphalt tank, a first asphalt pump, an asphalt scale and a second asphalt pump. The first asphalt pump delivers asphalt in the asphalt tank to the asphalt scale, and after being weighed on the asphalt scale, the asphalt is delivered to the three-way valve 20 by the second asphalt pump.

[0067] In the original production mode, the inlet 21 of the three-way valve 20 is connected to the first outlet 22, so that the asphalt can directly enter the first forced intermittent mixer to be mixed with the mineral powder and aggregate, and then the mixture of the three is discharged into the second forced intermittent mixer for secondary mixing to finally form finished asphalt.

[0068] In the regeneration production mode, the inlet 21 of the three-way valve 20 is connected to the second outlet 23, so that the asphalt can be put into the second forced intermittent mixer for secondary mixing with the mixture of mineral powder, aggregate and recycled materials to finally form finished asphalt.

[0069] Furthermore, the asphalt heating unit is used to heat asphalt. At room temperature, the viscosity of asphalt is high, and it is in a semi-solid or solid state, and its fluidity is very poor, which is not conducive to construction operations. Heating can reduce the viscosity of asphalt and make it have good fluidity. During the transportation and pumping of asphalt, good fluidity helps asphalt to pass through pipelines, pumps and other equipment smoothly, avoiding problems such as blockage and transportation difficulties, and improving the efficiency and convenience of construction.

[0070] Specifically, the asphalt heating part can also use a thermal oil furnace. The thermal oil furnace directly inserts the heater into the thermal oil for direct heating, and uses a high-temperature oil pump to circulate the liquid phase to transport the heated thermal oil to the asphalt tank, and then returns to the oil furnace from the oil outlet of the asphalt tank for heating, forming a complete circulation heating system.

[0071] In some embodiments, the aggregate system further includes an aggregate input portion, a drying portion, and an aggregate output portion which are connected in sequence, and the aggregate output portion is connected to the first forced intermittent mixer.

[0072] Specifically, the aggregate input part includes an aggregate belt conveyor, an aggregate conveyor and a first aggregate elevator connected in sequence. The aggregate output part includes a second aggregate elevator, a vibrating screen, an aggregate bin, an aggregate scale and an aggregate buffer bucket connected in sequence.

[0073] The path of the aggregate is: aggregate conveyor belt → aggregate conveyor → first aggregate elevator → drying section (first drying space) → second aggregate elevator → vibrating screen → aggregate bin → aggregate scale → aggregate buffer hopper, and the outlet of the aggregate buffer hopper serves as the aggregate outlet 12 of the aggregate system.

[0074] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0075] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0076] It should be easily understood that the terms “on,” “above,” and “over” in this application should be interpreted in the broadest manner, so that “on” means not only “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above something” or “over,” but also may include the meaning of “above something” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0077] In addition, spatially relative terms, such as "below," "below," "below," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations, and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An asphalt mixing plant, comprising: A recycled material system, used for supplying recycled material, wherein the recycled material system has a recycled material outlet; an aggregate system for supplying aggregate, wherein the aggregate system has an aggregate outlet; an asphalt system for supplying asphalt, the asphalt system having an asphalt outlet; a first forced intermittent mixer, the first forced intermittent mixer being in communication with the aggregate outlet; a second forced intermittent mixer, the second forced intermittent mixer being in communication with the first forced intermittent mixer; The asphalt outlet can be selectively connected to the first forced intermittent mixer or the second forced intermittent mixer; The regenerated material outlet can be connected to the first forced intermittent mixer in an on-off manner; and, The asphalt mixing plant is configured as follows: When in the original production mode, the recycled material outlet is disconnected from the first forced intermittent mixer, and the asphalt outlet is connected to the first forced intermittent mixer, so as to use the first forced intermittent mixer to mix the aggregate and asphalt, and then discharge the mixture of the two into the second forced intermittent mixer for secondary mixing; When in the regeneration production mode, the recycled material outlet is connected to the first forced intermittent mixer, and the asphalt outlet is connected to the second forced intermittent mixer, so that the first forced intermittent mixer can be used to mix the recycled material and aggregate, and then the mixture of the two is discharged into the second forced intermittent mixer to be mixed with asphalt and subjected to secondary mixing.

2. The asphalt mixing plant according to claim 1, wherein: The aggregate system also includes a drying section for drying aggregate; The recycled material system also includes a recycled material input section for inputting recycled material and a recycled material output section for outputting recycled material. The recycled material system is configured to selectively connect the recycled material input section with the recycled material output section, or to connect the recycled material input section with the recycled material output section through the drying section.

3. The asphalt mixing plant according to claim 2, wherein: The drying part defines a first drying space and a second drying space that are independent of each other. The first drying space is used to receive aggregates, and the second drying space is used to receive recycled materials.

4. The asphalt mixing plant according to claim 2, wherein: The recycled material input part includes a recycled material belt conveyor, a recycled material conveyor and a transition hopper which are connected in sequence; The recycled material output part includes a recycled material elevator, a recycled material temporary storage bin, a recycled material weighing scale and a regeneration chute which are connected in sequence; The transition hopper is connected to the recycled material elevator through a first channel; The transition hopper is connected to the drying section through a second channel, and the drying section is connected to the recycled material elevator through a third channel; The regeneration chute is connected to the first forced intermittent mixer through a fourth channel, and the fourth channel is provided with an on-off valve to control the on-off of the fourth channel.

5. The asphalt mixing plant according to any one of claims 1 to 4, wherein: The aggregate system further comprises: A drying section, which is used for drying aggregates, and the drying section has a flue for flue gas to pass through; The dust collecting part is arranged at the outlet of the flue to collect dust in the flue gas.

6. The asphalt mixing plant according to claim 5, further comprising: A mineral powder system is connected to the first forced intermittent mixer to supply mineral powder.

7. The asphalt mixing plant according to claim 6, wherein: The mineral powder system has a recovery bin, which is connected to the dust collecting part so that the collected dust can be passed into the recovery bin.

8. The asphalt mixing plant according to any one of claims 1 to 4, wherein: The asphalt system further comprises a three-way valve, the three-way valve having an inlet, a first outlet and a second outlet, the inlet being connected to the asphalt outlet via a pipeline, the first outlet being connected to the first forced intermittent mixer via a pipeline, and the second outlet being connected to the second forced intermittent mixer via a pipeline; the asphalt mixing station is configured as follows: When in the native production mode, connecting the inlet to the first outlet; When in regeneration mode, the inlet is connected to the second outlet.

9. The asphalt mixing plant according to any one of claims 1 to 4, wherein: The aggregate system further comprises an aggregate input part, a drying part and an aggregate output part which are connected in sequence, and the aggregate output part is communicated with the first forced intermittent mixer.

10. The asphalt mixing plant according to claim 9, wherein: The aggregate input part includes an aggregate belt conveyor, an aggregate conveyor and a first aggregate elevator connected in sequence; The aggregate output part comprises a second aggregate elevator, a vibrating screen, an aggregate bin, an aggregate scale and an aggregate buffer bucket which are connected in sequence.

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