CN219540574U - Asphalt pavement reclaimed material separation and regeneration system - Google Patents

Abstract

The utility model discloses a separation and regeneration system for reclaimed materials of asphalt pavement, which comprises a material conveying device, a screening device, a grain cutting device, a separating device and a grate-type sorting machine, wherein materials which are screened by the screening device and meet the particle size requirement enter the separating device, and unscreened strip impurities and reclaimed materials enter the grain cutting device for crushing; the grain cutting device is communicated with the grate type sorting machine to automatically sort and remove strip-shaped impurities, and the sorted materials are conveyed to the screening device through the conveying device to be screened repeatedly. The system can further crush and screen large-grain-size materials after pre-screening through the combination of the screening device, the separating device and the grain-cutting device, the defect that the existing equipment cannot process the large-grain-size materials, especially the materials with the grain sizes of more than 40mm, is overcome, and the combination of the screening device and the grate-type sorting machine can automatically screen and remove irregular strip-shaped impurities mixed in recycled asphalt pavement reclaimed materials, so that reclaimed materials are cleaner and the hidden trouble of blocking the net of the follow-up screening impurities is eliminated.

Description

Asphalt pavement reclaimed material separation and regeneration system

Technical Field

The utility model belongs to the technical field of asphalt pavement reclaimed material separation, and particularly relates to an asphalt pavement reclaimed material separation and regeneration system.

Background

It is estimated that only expressways and national province trunk roads produce asphalt pavement reclaimed materials of 2 hundred million tons per year. At present, the reclaimed materials are mainly applied to middle-lower layers or base layers of common roads and municipal roads, and the utilization rate is generally below 30%. The main reasons are that stone and asphalt in reclaimed materials exist in a form of 'granules', the false particle size phenomenon is serious, the grading stability of the mixture is poor, the fusion of new asphalt and old asphalt is poor, the mixing temperature of the mixture is difficult to meet the requirements, and the like, the high-temperature, low-temperature and water stability performance of the reclaimed asphalt mixture are seriously affected, and the reclaimed asphalt mixture cannot be applied to high-grade highway asphalt pavement (particularly an upper layer) on a large scale.

The reclaimed materials (particularly coarse aggregates) after separation pretreatment have quality similar to that of new aggregates, can be used for road conditions such as upper, middle and lower layers of expressways or primary roads, and the like, and has greatly improved utilization rate and remarkable economic benefit. Therefore, it is critical to separate and screen the reclaimed materials for pretreatment and to increase the yield as much as possible. The existing reclaimed material separation and screening equipment can crush, separate and screen reclaimed materials to solve the agglomeration problem to a certain extent, but in actual use, the existing equipment can be found to have problems in the aspects of refinement treatment and yield assurance. For example:

patent CN113152209a discloses an asphalt concrete reclaimed material recycling device and recycling method. The method can reduce the agglomeration rate of the recycled asphalt concrete material by crushing, separating and sieving to obtain asphalt concrete with different particle sizes. But it is difficult to treat the super-particle size material of 40mm or more.

CN110523638A discloses a method for stripping fine aggregates from the surface of waste asphalt mixture aggregates. The method avoids the reclaimed materials from being bonded into clusters through freezing and negative pressure environment, so as to realize the purpose that the asphalt film on the aggregate surface falls off under the collision and friction effects. However, the method is difficult to realize in a complex construction environment at the temperature of-40 ℃ to-10 ℃ on one hand, and needs to spend a longer freezing period on the other hand, so that the problems of insufficient yield and the like are caused.

Disclosure of Invention

The utility model aims to: the utility model aims to provide a system capable of realizing separation and regeneration of asphalt pavement reclaimed materials with large particle sizes so as to obtain materials meeting the particle size requirements.

The technical scheme is as follows: the utility model relates to an asphalt pavement reclaimed material separation and regeneration system, which comprises a material conveying device, a screening device for primarily screening asphalt pavement reclaimed materials, a grain cutting device and a separating device, wherein the grain cutting device and the separating device are respectively communicated with the screening device;

the grain cutting device is communicated with the grate type sorting machine to sort and remove strip-shaped impurities, and the materials sorted by the grate type sorting machine are conveyed to the screening device through the conveying device to be screened repeatedly until the materials meeting the grain size requirements are obtained.

Further, the material conveying device of the separation regeneration system is a lifting machine, one end of the lifting machine is connected with the feeding device, and the other end of the lifting machine is connected with the screening device.

Further, the separation regeneration system also comprises a support frame for supporting each device.

Further, the grain cutting device and the separating device of the separating and regenerating system are positioned at the lower end of the screening device and are communicated through the chute.

Furthermore, the grain cutting device of the separation and regeneration system is connected with the conveying device through the conveying device, and the grate type sorting machine stretches across the conveying device to block and remove impurities in the asphalt pavement reclaimed materials.

Further, the discharge port of the grate sorter of the separation and regeneration system is connected with a conveying device, and the grate sorter is conveyed into the conveying device through the conveying device to enter a screening device for screening again.

Further, the separation and regeneration system also comprises a dust removal device connected with the screening device, the grain cutting device and the separation device.

The beneficial effects are that: compared with the prior art, the utility model has the advantages that: according to the system, the screening device, the separating device and the grain cutting device are combined, and after pre-screening, the materials with large grain sizes (namely, the materials with the grain sizes being more than 25mm and basically 25-200 mm) can be further crushed and screened, so that the materials meeting the grain size requirements are obtained, the defect that the materials with the grain sizes being more than 40mm cannot be processed by the existing equipment is overcome, the non-woven fabrics blended in the reclaimed asphalt pavement reclaimed materials, irregular strip-shaped impurities such as crack-resistant patches and the like can be screened and removed by the combination of the screening device and the grate sorter, the reclaimed materials are cleaner, the hidden danger of blocking the net by the follow-up screening impurities is eliminated, and the screening efficiency is improved.

Drawings

FIG. 1 is a block diagram of a separation regeneration system of the present utility model;

FIG. 2 is a perspective view of the utility model grate sorter fitted return belt conveyor;

fig. 3 is a perspective view of the grate sorter of the present utility model;

fig. 4 is a front view of the grate sorter of the present utility model;

FIG. 5 is a schematic view of the structure of the grate bar mechanism of the present utility model;

FIG. 6 is a schematic view of the drive mechanism and rack plate of the present utility model mated;

FIG. 7 is a schematic view of the scraper mechanism of the present utility model;

FIG. 8 is a flow chart of a separation process of the separation regeneration system of the present utility model.

Detailed Description

The technical scheme of the utility model is further described in detail below with reference to the accompanying drawings.

It should be noted that, the material conveying device 1 adopted in the asphalt pavement reclaimed material separation and regeneration system of the utility model can be a lifting machine, the screening device 2 can be a non-screening device, the grain cutting device 3 can be a grain cutting machine, the separation device 4 can be a separator, the feeding device 6 can be a raw material feeder, the conveying device 8 can be a belt conveyor, the dust removing device 9 can be a dust remover, the structures of the materials are all known techniques, the related structural improvements are not made, the materials can be purchased from the market, and the related types are shown in the following table 1.

The sieving machine 2 adopted by the utility model sieves materials with the specification of 25mm, namely, when the materials are initially sieved, small-particle-size materials with the specification of less than 25mm are sieved and enter the separator 4 to remove asphalt membranes, and large-particle-size materials with the specification of more than 25mm (basically 25-200 mm) which are not sieved and strip-shaped impurities enter the granulator 3 to further crush the large-particle-size materials. In addition, if the separation and regeneration system of the present utility model is used for sieving other materials with the specification other than the present utility model, the sieve plate of the sieving machine 2 can be replaced correspondingly or the sieving machine 2 with different specification types can be adopted, and the separation and regeneration system is not limited to one sieving specification requirement of the present utility model.

Table 1 device model table

Sequence number	Part name	Purchasing manufacturer
			1	Lifting machine	NE150-22M
2	Non-resistance screen	SG-1231
			3	Grain cutting machine	PF-1007
4	Separator	ZS-1624
			5	Belt conveyor	TD75B650*10M
6	Dust remover	PPCS64-4

The utility model adopts the raw material feeder 6, wherein, three groups of delay vibrators are arranged on the bin body to avoid arching of reclaimed materials, and a belt is driven by a frequency conversion speed regulation mode to discharge materials to the elevator 1 according to the output.

The strip-shaped screening plate (25 mm in screen plate gap) of the non-resistance screen 2 can separate irregular strip-shaped impurities such as non-woven fabrics, crack-resistant pastes and the like from reclaimed materials through vibration, so that the hidden danger of blocking the screen is reduced.

The processing capacity of the particle eliminator 3 is 50t/h, the equipment power is 45kW, a frequency converter is arranged, the speed regulation range is 1-622 r/min, and the decomposing effect of the large-particle-size reclaimed materials can be improved by adjusting the rotor speed and the adjusting distance of the impact plate through the frequency conversion of a motor.

The separator 4 adopts double 90KW motors, is provided with a frequency converter, has a speed regulation range of 1-1600 revolutions per minute, and has a motor driving form of double motors at two sides. Compared with single-side motor driving, the double motors on two sides can prolong the service life of the rotor bearing, reduce the failure rate and save energy consumption. The separator has the dual functions of stone beating and stone beating, and the abrasion condition of the internal impeller and Zhou Huban can be conveniently checked through the installation and maintenance hole.

The dust remover 9 adopts a bag type dust remover, 4 electromagnetic pulse valves, 4 lifting valves, a dust removing cloth bag 130 multiplied by 2450mm and a filtering surface area 248m ² The method comprises the steps of carrying out a first treatment on the surface of the Air quantity 18000m is effectively processed by fan ³ /h; in order to ensure the stability and cleanness of the air source, a screw type air compressor is selected as the air compressor, and 1.0m of the air compressor is provided ³ Is provided with a low-pressure protection.

As shown in fig. 1, the asphalt pavement reclaimed material separation and regeneration system comprises a raw material feeder 6, a lifter 1 for lifting asphalt pavement reclaimed materials into an unobstructed screen 2 for preliminary screening, wherein the raw material feeder 6 is connected with a discharge port of the raw material feeder 6, and the discharge port of the lifter 1 can be connected with a feed port of the unobstructed screen 2 or can be communicated with the raw material feeder through a chute. The unobstructed screen 2 is provided with two discharge ports, one of which is communicated with the separator 4 positioned below the unobstructed screen, and the two discharge ports can be communicated through a chute; the other port is communicated with a grain cutting machine 3 positioned below the grain cutting machine through a chute, namely, the small-grain-diameter reclaimed materials with grain diameters below 25mm after being primarily screened by the non-resistance screen 2 directly enter a separator 4 for further crushing and separation, non-woven fabrics blended in the reclaimed materials and irregular strip-shaped impurities such as crack resistance paste and large-grain-diameter reclaimed materials with grain diameters above 25mm after being screened by the non-resistance screen enter the grain cutting machine 3 for further crushing of the large-grain-diameter materials, the crushed large-grain-diameter materials and strip-shaped impurities enter a grate-type sorting machine 6 positioned below the grain cutting machine 3 for removing the non-woven fabrics blended in the reclaimed materials and the irregular strip-shaped impurities such as crack resistance paste and only comprise the crushed materials by the grain cutting machine, and the materials are conveyed into the elevator 1 through a belt conveyor 8 and enter the non-resistance screen 2 for screening again.

The grain cutting machine 3 can be connected with the comb type sorting machine 5 through the chute and the belt conveyor 8, the comb type sorting machine 5 stretches across the belt conveyor 8, materials on the grain cutting machine 3 enter the belt conveyor 8 through the chute, impurities such as strips are sorted and removed through the comb type sorting machine 5, and then the materials are transmitted into the lifting machine 1.

The components are supported by the building type supporting frame 7, are arranged up and down, are divided into four layers, the actual occupied area is reduced, each layer is fixed by bolts, the installation and the disassembly are convenient, and the lifting platform is arranged to facilitate the overhaul equipment. And the separation and regeneration system of the utility model also comprises a dust remover 9 which is respectively connected with the unobstructed screen 2, the separator 4 and the grain cutting machine 3.

The start-stop operation of the device can be controlled by the PLC control system 10, so that the high-efficiency operation of the whole separation regeneration system is realized.

In addition to the above, the grate sorter employed in the present utility model comprises: the rack 11 is provided with a grate bar mechanism arranged on the rack 11 and scraper mechanisms arranged at the outer sides of two ends of the grate bar mechanism; wherein, the grate bar mechanism is used for blocking and conveying impurities in the asphalt pavement reclaimed materials running on the belt conveyor 8; the device comprises a plurality of grate bars 12 which are sequentially arranged left and right, and a sliding mechanism for fixing and realizing the left and right sliding of the grate bars 12, wherein the sliding mechanism comprises a guide rail plate 13 which is arranged on a frame 11 and has the same transmission section as a belt conveyor 8, the upper ends of the grate bars 12 are connected with the lower ends of the guide rail plate 13 through guide wheel mechanisms, the lower ends of the grate bars 12 are connected with sliding guide rails, and return springs 14 are arranged on the section of the grate bars 12 between the sliding guide rails and the guide rail plate 13 so as to realize the up-down movement of the grate bars 12; the scraping plate mechanism is used for scraping the blocked impurities on the grate bars 12; which includes a squeegee 15 and a driving assembly for driving the squeegee 15 to move forward and backward and up and down.

Further, the sliding guide rail of the grate sorter comprises rack plates 16 arranged at the lower ends of the grate bars 12, the rack plates 16 are connected and slidably arranged on guide rail shafts 18 through sliding blocks 17, and the guide rail shafts 18 are fixedly arranged on the frame 11.

Further, the grate sorter also comprises a driving mechanism for driving the sliding mechanism to slide, the driving mechanism comprises a motor 19, a transmission shaft 20 connected with the motor 19 and a gear 21 arranged on the transmission shaft 20 and meshed with the rack plate 16, and the gear 21 rotates to drive the rack plate 16 to slide left and right.

Further, the guide wheel mechanism of the grate sorter comprises a guide wheel 22 arranged at the lower end of the guide rail plate 13 and propped against the guide rail, and the guide wheel 22 is connected with the grate bar 12 through a guide wheel seat 23.

Further, the return spring 14 of the grate sorter is connected with the guide wheel seat 23 through a spring seat 24.

Further, the scraper mechanism of the grate sorter also comprises a supporting plate 25 for supporting the scraper 15, the driving assembly comprises a first bracket 26 arranged on the frame 11, a cylinder 27 arranged on the first bracket 26 for driving the scraper 15 to move back and forth, a movable bracket 28 is connected with the telescopic end of the cylinder 27, the movable bracket 28 is connected with the supporting plate 25 through a guide rail shaft 18, and a sliding block 17 is arranged on the movable bracket 28 corresponding to the guide rail shaft 18; a second bracket 29 fixed on the movable bracket 28 is arranged between the supporting plate 25 and the movable bracket 28, a cylinder 27 for driving the scraper 15 to move up and down is arranged on the second bracket 29, and the telescopic end of the cylinder 27 is connected with the scraper 15.

Further, two groups of grate bar mechanisms of the grate sorter are respectively arranged at two sides of the driving mechanism in a left-right arrangement mode; the scraper mechanisms are four groups and are respectively arranged at two ends of the two groups of grate bar mechanisms.

Further, the grate sorter also comprises sensors arranged at two ends of the frame 11, the sensors sense that the grate bars 12 reach the end of the frame 11, and the sensors feed back to the PLC control system to control the start and stop of the scraper mechanism and the forward and reverse operation of the driving mechanism.

Further, the grate sorter also includes a U-shaped recovery bin 30 at the lower end of the scraper mechanism.

Specific:

as shown in fig. 2, the grate sorter of the present utility model spans the belt conveyor 8 for blocking sorting and removal of the impurities in the asphalt pavement reclaimed materials on the belt conveyor 8.

As shown in fig. 3 and 4, the grate sorter comprises a frame 11, grate bar mechanisms arranged on the frame 11, driving mechanisms for driving the grate bar mechanisms to move, scraping plate mechanisms arranged on the outer sides of two ends of the grate bar mechanisms, and a U-shaped recycling bin 30 arranged at the lower end of the scraping plate mechanisms, wherein the U-shaped recycling bin 30 is fixedly arranged on the frame 11. The two groups of grate bar mechanisms are identical in length and structure, and are respectively arranged on two sides of the frame 11, so that impurities in the asphalt pavement reclaimed materials are subjected to double screening. The grate sorter mainly blocks and sorts impurities in the asphalt pavement reclaimed materials through the grate bar mechanism, and then conveys the asphalt pavement reclaimed materials to the position of the scraper mechanism for cleaning. The scraper mechanism is 4 groups, is located the both ends outside of two sets of grid section mechanisms respectively, and then can clear away the impurity on the grid section mechanism of each side and each end.

The grate bar mechanism comprises a plurality of grate bars 12 transversely arranged along the frame 11 and a sliding mechanism for fixing the plurality of grate bars 12 and realizing left-right sliding of the plurality of grate bars 12, as shown in fig. 5. The lengths of the grate bars 12 of the two groups of grate bar mechanisms are slightly different, so that the inclination setting of the belt conveyor 8 is adapted. The sliding mechanism comprises a guide rail plate 13 which is transversely fixed on the frame 11, and a plurality of grate bars 12 are sequentially arranged on the guide rail plate 13. The guide rail plate 13 has the part that is consistent with the transport cross section of belt conveyor 8, and this part is located directly over belt conveyor 8, and guide rail plate 13 preferably can be U type guide rail plate, has offered U type recess in the middle promptly, and then can make on this guide rail plate 13 the grid section 12 that corresponds belt conveyor 8 belt surface keep 5mm interval all the time with the belt surface, on can effectively block and can pass through the basis of material to the impurity in the bituminous paving reclaimed materials, can not make grid section 12 and belt conveyor 8 belt surface have collision friction. The top end of the grate bar 12 is fixedly connected to the guide rail plate 13 through the guide wheel 22 and the guide wheel seat 23, the guide wheel 22 and the guide wheel seat are fixed through the pin shaft 33, and the guide rail plate 13 can be conformed in the sliding process of the grate bar 12 through the arrangement of the guide wheel 22. The lower ends of the grate bars 12 are connected with rack plates 16, and the rack plates 16 are connected to a guide rail shaft 18 through a sliding block 17 and are positioned through a linear bearing 32. The guide rail shaft 18 is also arranged on the frame 11 in a crossing way, and the grate bars 12 are driven to slide along the guide rail plates 13 through the movement of the rack plates 16.

The section of the grate bar 12 between the guide rail plate 13 and the rack plate 16 is provided with a return spring 14, and the other end of the return spring 14 is arranged on the rack plate 16 through a spring seat 24, namely the return spring 14 is arranged between the guide wheel seat 23 and the spring seat 26. The return spring 14 enables the grate bar 12 to move up and down in the linear bearing 32 through the positioning of the linear bearing 32, namely, the grate bar 12 can move up and down through the arrangement of the return spring 14 and the guide rail plate 13 so as to adapt to the cross section shape of the belt conveyor 8, and impurities in the asphalt pavement reclaimed materials on the belt surface of the belt conveyor 8 can be effectively blocked.

The driving mechanism of the grate sorter comprises a motor 19, and the motor 19 is fixedly arranged on the frame 11 through a motor seat 31. The motor 19 is connected with the transmission shaft 20 through a coupler, the transmission shaft 20 is connected with a gear 21 meshed with the rack plate 16, the gear 21 is driven to rotate through the motor 19 so as to drive the rack plate 16 to slide left and right, as shown in fig. 6, the grate bar mechanism is enabled to slide left and right, and finally the grate bar mechanism is enabled to transport impurities blocked on the grate bar 12 out of the belt conveyor 8. Correspondingly, the two groups of grate bar mechanisms are respectively positioned at two sides of the driving mechanism, the two groups of grate bar mechanisms are arranged left and right, and the rack plate 16 is meshed with the gear 21, so that the gear 21 rotates to drive the grate bar mechanisms at the two sides to move relatively.

As shown in fig. 7, the squeegee mechanism includes a squeegee 15, a pallet 25 provided at the lower end of the squeegee 15 to support the squeegee 15, and a driving assembly for driving the squeegee 15 to be movable up and down and forward and backward. Through the up-and-down and back-and-forth movement of the scraper 15, the impurities carried on the grate bar 12 can be effectively scraped, and the scraped impurities fall into the U-shaped recovery bin 30 positioned at the lower end of the scraper mechanism. The driving assembly comprises a first bracket 26 fixedly arranged on the frame 11, a transverse air cylinder 27 is arranged on the first bracket 26, and a movable bracket 28 is arranged on the telescopic section of the air cylinder 27 in a connecting manner. The movable support 28, the supporting plate 25 and the scraping plate 15 are connected through the guide rail shafts 18, and the guide rail shafts 18 are arranged at two ends of the scraping plate 15. The connection part of the guide rail shaft 18 and the movable bracket 28 is provided with the movable sliding block 17, a vertical air cylinder 27 and a second bracket 29 are arranged between the movable bracket 28 and the scraping plate 15, the second bracket 29 is fixedly arranged on the movable bracket 28, the telescopic end of the air cylinder 27 is connected with the scraping plate 15, the movable bracket 28 is driven to move back and forth through the transverse air cylinder 27, and the scraping plate 15 moves up and down through the vertical air cylinder 27, the guide rail shaft 18 and the sliding block 17.

In order to sufficiently remove the foreign matters from the grate bars 12, the sum of the lengths of the scrapers 15 of the scraper mechanisms at the left and right ends of the present utility model should be equal to or greater than the lengths of the grate bars arranged transversely above the belt conveyor 8.

In addition to the above, the grate sorter of the present utility model further comprises sensors at both ends of the frame 11, by which the sensors are provided, when the grate bar 12 reaches the end position of the frame 11, the sensors are fed back to the PLC control system, the driving mechanism stops operating, the operation of the scraper mechanism is started, and when one of the up-and-down operations of the scraper mechanism is completed, the PLC control system again controls the driving mechanism to operate in the reverse direction. Correspondingly, the grate bar 12 of the grate bar mechanism is provided with a sensor corresponding to the sensor. The utility model is a well-known technology in the field according to the operation mode of setting the sensor, monitoring and feedback of the sensor and the control mode of the PLC control system.

The utility model discloses a sorting method by adopting the grate type sorting machine, which comprises the following steps:

(1) Starting a driving mechanism, driving a sliding mechanism to drive the grate bars to slide left or right, and blocking impurities in the asphalt pavement reclaimed materials on the returning belt conveyor by the grate bars at the lower ends of the guide rail plates consistent with the transmission section of the returning belt conveyor and sliding left or right along with the impurities;

(2) When the grate bars of the grate bar mechanism are operated to the position of the scraping plate mechanism, the driving component drives the scraping plate mechanism to scrape impurities on the grate bars;

(3) Starting a driving mechanism, driving a sliding mechanism to drive the grate bars to slide right or left, and repeating the steps (1) and (2) to perform sorting operation.

Specific:

(1) The grate sorter is arranged across the material returning belt conveyor, and the positions of the grate sorter are adjusted so that the grate bars of the grate bar mechanisms arranged on two sides keep a distance of 5mm from the surface of the material returning belt conveyor;

(2) The driving assembly is started to enable the grate bar mechanism to slide left or right, and the grate bars positioned at the upper end of the returning material belt conveyor can block impurities in the asphalt pavement reclaimed materials running on the returning material belt conveyor and carry the impurities to slide left or right together;

(3) When the grate bar at one end enters the position of the scraper mechanism and reaches the end part of the frame, a sensor on the frame is fed back to the PLC control system, so that the driving mechanism is controlled to stop running, the scraper mechanism is started to be attached to the grate bar for cleaning movement, and when one action of the scraper mechanism running up and down is finished, the PLC control system is controlled to drive the driving mechanism to run reversely;

(4) Similarly, when the grate bar slides to the other end, the same operation as that in the step (3) is performed;

(5) The grate bar mechanism moves back and forth until the sorting of the asphalt pavement reclaimed materials on the returning belt conveyor is completed.

The method for screening by adopting the fine separation regeneration system for the asphalt pavement reclaimed materials disclosed by the utility model, as shown in fig. 2, comprises the following steps:

(1) Conveying the asphalt pavement reclaimed materials to a non-resistance sieve through a lifting machine for primary screening, and enabling the materials with the particle size of less than 25mm obtained after primary screening to enter a separator for removing asphalt membranes to obtain fine-grained materials;

(2) The strip impurities which are not subjected to the primary screening of the non-resistance screening and the materials with the particle size of 25-200mm enter a grain cutting machine for crushing, the strip impurities are removed through a grate type sorting machine, and the purified materials are conveyed to the non-resistance screening for repeated screening through a belt conveyor and a combined lifting machine;

(3) Repeating the step (1) and the step (2) until the screening operation is completed.

Example 1

The method for separating by adopting the separation regeneration system comprises the following steps:

(1) System parameters: standard atmospheric pressure 760mmHg; the altitude is less than or equal to 1000mThe method comprises the steps of carrying out a first treatment on the surface of the The ambient temperature is 5-30 ℃; aggregate specific gravity 1600kg/m ³ The method comprises the steps of carrying out a first treatment on the surface of the The maximum feeding amount is 120t/h; the maximum feed particle size is 200mm; the screen residue rate is less than or equal to 1 percent; the water content of the reclaimed materials is less than or equal to 5 percent.

(2) Unloading the asphalt pavement reclaimed materials to be separated and screened on a raw material feeder;

(3) The raw material feeder drives a belt to discharge to a lifting machine in a variable frequency speed regulation mode according to preset output;

(4) The hoister inputs the recycled asphalt pavement material into the non-blocking sieve along the chute to pre-sieve the recycled asphalt pavement material;

(5) The non-resistance screen conveys the reclaimed materials with the grain diameter larger than 25mm to the particle eliminating machine along the chute, after being crushed, the reclaimed materials with the grain diameter smaller than 25mm enter the separator along the chute to be crushed and separated after the non-woven fabrics, crack-resistant patches and other irregular strip-shaped impurities in the reclaimed materials of the asphalt pavement are removed through the grate type sorting machine along the belt conveyor;

(6) Repeating the steps (4) to (5) until the screening operation is completed.

Claims (7)

1. The utility model provides an asphalt pavement reclaimed material separation regeneration system which characterized in that: the separation regeneration system comprises a material conveying device (1), a screening device (2) for primarily screening asphalt pavement reclaimed materials, a grain cutting device (3) and a separating device (4), wherein the grain cutting device (3) and the separating device (4) are respectively communicated with the screening device (2), materials which are screened by the screening device (2) and meet the particle size requirement enter the separating device (4), and strip impurities and materials which are not screened by the screening device (2) enter the grain cutting device (3) for crushing;

the grain cutting device (3) is communicated with the grate type sorting machine (5) to sort and remove strip impurities, and the materials sorted by the grate type sorting machine (5) are conveyed to the screening device (2) through the conveying device (1) to be screened repeatedly until the materials meeting the grain size requirements are obtained.

2. The asphalt pavement reclaimed material separation and regeneration system according to claim 1, wherein: the material conveying device (1) is a lifting machine, one end of the lifting machine is connected with the feeding device (6), and the other end of the lifting machine is connected with the screening device (2).

3. The asphalt pavement reclaimed material separation and regeneration system according to claim 1, wherein: the separation regeneration system further comprises a support frame (7) for supporting the devices.

4. The asphalt pavement reclaimed material separation and regeneration system according to claim 1, wherein: the grain cutting device (3) and the separating device (4) are positioned at the lower end of the screening device (2) and are communicated through a chute.

5. The asphalt pavement reclaimed material separation and regeneration system according to claim 1, wherein: the grain cutting device (3) is connected with the conveying device (1) through the conveying device (8), and the grate sorter (5) stretches across the conveying device (8) to block and remove impurities in the asphalt pavement reclaimed materials.

6. The asphalt pavement reclaimed material separation and regeneration system according to claim 1, wherein: the discharge port of the grate sorter (5) is connected with a conveying device (8), and the grate sorter is conveyed into the conveying device (1) through the conveying device (8) to enter the screening device (2) for screening again.

7. The asphalt pavement reclaimed material separation and regeneration system according to claim 1, wherein: the separation regeneration system also comprises a dust removal device (9) connected with the screening device (2), the grain cutting device (3) and the separation device (4).