CN104480832B - A kind of squash type bituminous paving milling material crushing and screening device - Google Patents
A kind of squash type bituminous paving milling material crushing and screening device Download PDFInfo
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- CN104480832B CN104480832B CN201410653952.3A CN201410653952A CN104480832B CN 104480832 B CN104480832 B CN 104480832B CN 201410653952 A CN201410653952 A CN 201410653952A CN 104480832 B CN104480832 B CN 104480832B
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- milling material
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/05—Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of squash type bituminous paving milling material crushing and screening device, including heated transportation system and pulverizing-screening system；Heated transportation system includes drum, and milling material is rotated the blow tank being delivered to drum front end by drum by the feed well of drum rear end, and is provided with the heater of heating milling material on drum；Pulverizing-screening system is arranged at the lower section of blow tank, is obliquely installed；Pulverizing-screening system include by multiple can the broken working group that forms of the fragmentation cell of rotation, collected by screen cloth after the fragmentation cell extruding that the milling material in broken working group that falls is rotated.The present invention can be effectively improved processing mode single to RAP, extensive in the road surface hot recycling in current highway extension project, and then facilitates the mix-design of heat regeneration asphalt mixture, and improves the pavement performance of reclaimed asphalt mixture.
Description
Technical field
The present invention and a kind of bituminous paving milling material pretreatment unit, be specifically related to a kind of asphalt mixing plant with squeezing
Pressure type bituminous paving milling material crushing and screening device.
Background technology
Applied of Asphalt Pavement Recycle Technique is the old asphalt pavement overhauled by needs or discard, through digging, reclaiming,
Broken, screening, then and newly gather materials, new asphalt material suitably coordinates, and again mixes and stirs, formed and there is certain road use
The reclaimed asphalt mixture of performance, for the whole set process technology of surfacing surface layer or basic unit.Wherein, plantmix
Hot recycling method be by old asphalt pavement through milling, dig after transport batching plant, then Convergency fracturing back, according to road surface
The quality requirement of different levels, carries out proportion design, determine old asphalt mixture, regenerative agent, new asphalt material,
The ratio of material such as newly gathering materials, then in mixer, stirring forms new compound, becomes asphalt road in order to making
The construction method in face.This method is applicable to road surface cold milling heat and paves construction technology, cannot be only used for maintenance
The upper, middle and lower surface layer of bituminous paving, and basic unit, roadbed can be carried out reinforcement.
Old asphalt mixture (RAP) be by old pavement through milling, broken after the fragment that obtains, wherein the most mostly
Number is some former road surface mineral aggregates and Bituminous concrete surface bonding pockets of " combination ", and the most single gathers materials.Different next
The difference of the old asphalt mixture in source is the biggest, different gratings, different milling thickness, different milling mechanism
Impact Deng many factors causes the conglomeration situation the biggest difference of existence of old compound.
Therefore, the pretreatment to bituminous paving milling material (RAP) is a very important program, and it is main
It is to aniseed in sample, the process of " uniting material ", because the old compound of excessive, caking is when heating, by
Poor in the thermal conductivity of pitch, the substantial amounts of energy can be wasted.Further, due to aggregate grading and the oilstone of RAP
The variability of the material properties such as ratio be also restriction heat regeneration asphalt mixture high mix join, the technology bottle of high-rise position application
Neck.Therefore, bituminous paving milling material (RAP) crushed, sieve, the pretreating process such as stepping stacking
Seem especially necessary.
At present, in real work, breaking method has hand breaking, Mechanical Crushing, heat resolve etc..Specifically
Adopt and how to be determined on a case-by-case basis.If producing reclaimed asphalt mixture in a large number, hand breaking method falls behind,
Not only the time is long, and the old pavement material particle diameter after crushing is uneven, and fragmentation quality is difficult to ensure that, common people
Work crushes the reworked material being generally used for repairing little area pit；For large-scale hot recycling compound batching plant, often
Use Mechanical Crushing, also have certain requirement simultaneously for disintegrating machine, it is impossible to too thin Bituminous concrete surface material fragmentation,
Also require that disintegrating machine productivity ratio is mated with the parameter of mixer productivity ratio.In Practical Project, owing to RAP pre-processes
Equipment and the shortage of technique, the pretreatment to milling material is in the most extensive technical merit, and this is to highway in China
The development of engineering Regenerative Technique of Asphalt Mixture creates extremely disadvantageous impact.
Summary of the invention
For the deficiency in above-mentioned existing equipment and production technology, it is an object of the present invention to provide a kind of pitch
Mixing station squash type bituminous paving milling material Crushing & Screening Machineries, can add bituminous paving milling material
The pretreatment such as heat, broken, screening, processing bituminous paving milling material (RAP) by this equipment can be with efficient solution
The certainly problem of RAP material variability, the later stage carries out proportioning Design of Recycle Asphalt Mixture provides the most former
Material grating and bitumen aggregate ratio data.
The technical solution adopted in the present invention is:
A kind of squash type bituminous paving milling material crushing and screening device, including heated transportation system and crushing and screening
System；
Heated transportation system includes drum, and milling material is rotated by the feed well of drum rear end and is delivered to rolling by drum
The blow tank of bucket front end, and on drum, it is provided with the heater of heating milling material；
Pulverizing-screening system is arranged at the lower section of blow tank, is obliquely installed；Pulverizing-screening system includes by multiple
Can the broken working group of fragmentation cell composition of rotation, it is broken that the milling material in broken working group that falls is rotated
Collected by screen cloth after unit extruding.
Further, described broken working group includes fixed case and fixed plate, between fixed case and fixed plate
Being connected by the base plate with edge baffle plate, described fragmentation cell is arranged on base plate, fragmentation cell axial
For the direction from fixed case to fixed plate.
Further, described fragmentation cell includes the first motor that rotating shaft and drive shaft rotate, in rotating shaft
On be coated with elastic surface layer.
Further, between described multiple fragmentation cells, the rotation direction phase of two adjacent fragmentation cells
Instead.
Further, described broken working group is provided with two pairs of fragmentation cells, at every a pair fragmentation cell
In, the direction from fixed case to fixed plate of the distance between two fragmentation cells is gradually increased；Two pairs of fragmentation cells
Parallel setting, two fragmentation cells close to each other in two pairs of fragmentation cells be arranged in parallel.
Further, described broken working group arranges more than one, is from top to bottom crisscross arranged；Milling material
After a broken working group screening, the highest point of the broken working group fallen thereunder.
Further, described screen slope is arranged, and from top to bottom arranges more than one；Through sieved through sieve
After, the milling material on screen cloth falls in collecting box.
Further, in described drum, the axial distribution along drum has helical blade, and helical blade is in rolling
Bucket is internally formed screw type chute to carry milling material；Drum is by the second motor-driven rotation.
Further, described heater includes being looped around the outside oil pipe arranged of drum, and oil pipe connects one
Individual hot oil pump；Move in oil pipe in the direction that the deep fat pumped out in hot oil pump is advanced in drum along milling material.
Further, described blow tank is provided with cutting plate, makes milling material not fall at two pairs of fragmentation cells
Between.
The present invention is technically characterized by comprising the steps as follows:
(1) drum heating system uses helical blade far to send milling material, and mode of heating uses safety and environmental protection
Heat-conducting oil heating mode is different from the most common flame mode of heating.This mode of heating is to the heating of old material all
Even, can avoid again because the Asphalt Contactor naked light in old material makes old drip while heating-up temperature reaches requirement ensureing
Green grass or young crops is burnt the security incidents such as even breaking out of fire；
(2) pulverizing-screening system that the present invention uses uses the mode of extruding to process milling material, both may be used
Can ensure that again the single intensity gathered materials therein and performance will not be subject to " the uniting material " in the most broken RAP
To loss；
(3) in the road surface hot recycling during the present invention can be effectively improved current highway extension project mono-to RAP
One, extensive processing mode, and then facilitate the mix-design of heat regeneration asphalt mixture, and improve regeneration
The pavement performance of asphalt；
(4) this device structure novel, stable, high to " false aniseed " the crushing and screening efficiency in RAP,
Original aggregate strength in milling material and performance will not be caused damage, be suitable for practical implementation and promote.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of the present invention；
Fig. 2 is drum heating system schematic diagram；
Fig. 3 is the structural representation of broken working group；
Fig. 4 is the side view of cylinder part；
Fig. 5 is the top view of blow tank part；
Fig. 6 is the structural representation of fragmentation cell；
In figure, label represents:
1 feed well, 2 drums, 3 fix bucket, 4 hot oil pumps, 5 oil pipes, 6 helical blades, and 7
Blow tank, 8 crush working group, 9 screen clothes, 10 second motors, 11 collecting boxs, 12 cutting plates；
81 fixed cases, 82 fragmentation cells, 83 baffle plates, 84 bearings, 85 fixed plates, 86 ends
Plate；
821 first motors, 822 rotating shafts, 823 elastic surface layers.
Detailed description of the invention
During the regeneration of milling material, the pretreatment to milling material is an important link, and existing
Not having a kind of device crushing milling material, sieving that is specifically designed in technology, traditional method is artificial
Broken, or use Mechanical Crushing mode to carry out the broken of entirety, add processing cost and time, and place undoubtedly
Milling material after reason is still difficult to reach good use requirement.Being directed to this situation, inventor team proposes
This sieving approach device:
A kind of squash type bituminous paving milling material crushing and screening device, including heated transportation system and crushing and screening
System；
Heated transportation system includes drum 2, and milling material is rotated by drum 2 by the feed well 1 of drum 2 rear end
It is delivered to the blow tank 7 of drum 2 front end, and on drum 2, is provided with the heater of heating milling material；
Pulverizing-screening system is arranged at the lower section of blow tank 7, is obliquely installed；Pulverizing-screening system includes by many
Individual can rotation fragmentation cell 82 composition broken working group 8, fall the milling material quilt in broken working group 8
Collected by screen cloth 9 after fragmentation cell 82 extruding rotated.
Mentality of designing and the operation principle of this device are as follows:
In road-surface milling material, on subsequent treatment impact maximum be road surface mineral aggregate and with regard to the bonding pockets of group of pitch
Ramming material, its viscosity is big, is difficult to the most broken by simple mechanical system, the most traditional either manually or mechanically mode
Broken process is unsatisfactory, makes in follow-up heating process, as made it fully melt with recycling, needs big
The heat time of amount and energy resource consumption.
In view of this key problem, this programme proposes, first passes through and milling material is to a certain degree heated
Mode, make material soften；And pockets of material its important produce owing to pitch and mineral aggregate combine, after the heating
Pitch softens, and makes whole material hardness of uniting reduce；Due to solids such as its internal mainly various mineral aggregates, by squeezing
The mode of pressure, can drive the pitch of partial melting to produce fortune relatively between the mineral aggregate in same unity material
Dynamic, in continuous extrusion process, mineral aggregate drive part pitch and and other mineral aggregates between distance increasingly
Greatly, and diplomatic corps's ramming material dispersion, become the mineral aggregate of the pitch parcel of fritter after dispersion, reached to pulverize and united material
Purpose；And the milling material after pulverizing sieves through the screen cloth 9 of different meshes again, make in certain particle size range
Interior milling material Scatter Gather, is beneficial to later use process.
As it is shown in figure 1, owing to uniting substantial amounts of pitch poor thermal conductivity in material, then before pitch is pulverized,
It is highly desirable to it is fully heated；And this heating process is prima facie, by diplomatic corps's ramming material surface
Softening, when follow-up extrusion process, it is easily deformed, beneficially extrusion process.
In this programme, carried out the pretreatment of milling material by a heated transportation system:
Drum 2 in heated transportation system is used for transporting milling material, and milling material puts into drum 2 through feed well 1
After in, make milling material move to the other end under the turning effort of drum 2, then send heating from blow tank 7
After milling material.
And during whole transport, owing to drum 2 has certain length, every a part of milling material is each along rolling
The identical distance of bucket 2 inwall traveling reaches blow tank 7, then in this process, just have sufficient chance pair
Milling material heats.This heating process has only to heat the surface portion of milling material in fact, makes milling material soft
Change, then by the way of this rotation conveying, its surface can be made to reach uniform, sufficiently heat；Heated
Journey makes milling material be heated to reclaim in old material more than the softening point (generally 70～80 DEG C) of pitch.
Screening system in this device, is aimed at the milling material after heated transportation system softens and carries out pulverizing, sieving
The mechanism divided.As it can be seen, screening system is made up of fragmentation cell 82, fragmentation cell 82 can be with rotation
Device, the rotation of multiple fragmentation cells 82, the milling material fallen between fragmentation cell 82 can be extruded.
Owing to milling material is in thermoplastic process before, milling material be easier to the to be broken rotation of unit 82 is made to be carried
Dynamic, and extruded by adjacent fragmentation cell 82；Extrusion process causes producing between the mineral aggregate that it is internal phase contraposition
Move, drive part pitch to be decomposed into less unity material；Due to being obliquely installed (here of pulverizing-screening system
Be obliquely installed, refer to respect to the horizontal plane for the set-up mode of acute angle), make milling material under gravity,
While being extruded, along fragmentation cell 82 to position lower part landing, then through the broken working group of the next one
The process of 8, until its size meets sets requirement.Milling material after attrition crushing, falls on screen cloth 9；Warp
The milling material crossing the screening of screen cloth 9, relatively small particle falls, and the milling material of big particle diameter rolls down to from screen cloth 9
In collection device, it is achieved the Scatter Gather of mineral aggregate after broken.
In order to make the performance of this programme more preferably, further provide following optimisation technique scheme:
Broken working group 8 includes fixed case 81 and fixed plate 85, passes through between fixed case 81 and fixed plate 85
Base plate 86 with edge baffle plate 83 connects, and described fragmentation cell 82 is arranged on base plate 86, broken single
Unit 82 is axially to the direction of fixed plate 85 from fixed case 81.
This is the structure of a kind of broken working group 8, and fragmentation cell 82 can rotation, then need driver
The power set rotated, such as motor.Fixed case 81 is just used for placing this kind of driving means, and other electricity
Device equipment.The body structure of fixed case 81, is effectively protected for driving means, even if top
Milling material falls and also will not produce infringement on fixed case 81；Preferably by the surface configuration of fixed case 81 be inclined-plane knot
Structure, bevel direction is that milling material guides the direction to fragmentation cell 82, with horizontal plane as a reference plane,
Direction the most obliquely, such milling material can also tumble to fragmentation cell 82 after falling on fixed case 81.The end
Plate 86 is for carrying the milling material after crushing, and the milling material that some particle diameters are the least, thus broken
Certain distance is left between unit 82 and base plate 86.The milling material of small particle along the downward landing of base plate 86,
And the milling material after being broken tumbles from fragmentation cell 82 to the next one and crushes working group 8, or fall the end of at
On plate 86 and gradually landing is to next broken working group 8.The edge of base plate 86, i.e. the two of base plate 86
Side is provided with baffle plate 83, prevents milling material from falling from both sides.But on the limit of base plate 86 lowest part and highest point
It is not provided with baffle plate 83.
Fragmentation cell 82 includes the first motor 821 that rotating shaft 822 and drive shaft 822 rotate, in rotating shaft 822
On be coated with elastic surface layer 823.
One preferably fragmentation cell 82 structure is, rotating shaft 822 and covering elastic surface layer in rotating shaft 822
823 compositions, as shown in Figure 6, and this rotating shaft 822 is driven rotation by the first motor 821；First motor 821
May be installed in above-mentioned fixed case 81, and the lower end of rotating shaft 822 is fixed on by the bearing 84 with base
In fixed plate 85.Elastic surface layer 823 can use rubber sleave, increase elastic surface layer 823 and milling material it
Between frictional force, it is simple to elastic surface layer 823 and the contact of milling material and follow-up crushing process.
Between multiple fragmentation cells 82, the rotation direction of two adjacent fragmentation cells 82 is contrary.
In order to constitute efficient extrusion process, the rotation direction arranging adjacent two fragmentation cell 82 is contrary:
When two fragmentation cell 82 rotation directions are contrary, then only have two kinds between the fragmentation cell 82 of arranged adjacent
Situation: rotate in opposite directions or rotate dorsad.When rotating in opposite directions, fall the milling between the two fragmentation cell 82
Material moves under the drive at fragmentation cell 82 between the two fragmentation cell 82；Due to elastic surface layer 823
And the viscosity between the pitch softened, make to have between milling material wherein and elastic surface layer 823 bigger
Frictional force, beneficially extrusion process.Milling material after extruding is pulverized falls on base plate 86, then along base plate 86
Slide.When rotating dorsad between two fragmentation cells 82, fall what milling material between rotated at it
Under drive, can only move to the direction that fragmentation cell 82 rotates, and can not squeezing by two fragmentation cells 82
Pressure；Therefore for two fragmentation cells rotated dorsad 82, it is smaller that gap between the two is arranged, when
When part milling material falls between two fragmentation cells rotated dorsad 82, the milling material meeting that only particle diameter is less
Directly fall in from gap on base plate 86, and what other larger milling material rotated at fragmentation cell 82
Under induced effect, can be brought between its adjacent fragmentation cell 82, and the effect of being squeezed, pulverize
Process.Above-mentioned rotation in opposite directions, refers to that the rotation direction of two fragmentation cells 82 is for towards two fragmentation cells
Direction between 82.
Being provided with two pairs of fragmentation cells 82 in broken working group 8, in every a pair fragmentation cell 82, two are broken
Distance between broken unit 82 is gradually increased from fixed case 81 to the direction of fixed plate 85；Two pairs of fragmentation cells
82 are arranged parallel, and two fragmentation cells 82 close to each other in two pairs of fragmentation cells 82 be arranged in parallel.
In a preferred embodiment, a broken working group 8 is arranged two to fragmentation cell 82, such as Fig. 3
Shown in, 1. and 4. constitute a pair fragmentation cell 82,2. and 3. constitute a pair fragmentation cell 82；Break for every a pair
Broken unit 82 rotates between two fragmentation cells 82 in opposite directions and spacing be gradually increased (as 1. and 4., 2. and
3. between), this direction being gradually increased is along the direction close to bottom surface, the i.e. side of the free landing of milling material
To.This setup, when during milling material falls at this pair fragmentation cell 82, along fragmentation cell 82
Be squeezed during freely gliding, and the distance between fragmentation cell 82 is increasing, then particle diameter is minimum
Milling material first can fall on base plate 86, walk the gathering materials of " unite material " that particle diameter is bigger and big particle diameter
Distance is longer；The frictional force of milling material is made milling material be squeezed by rotation and the rubber sleave of fragmentation cell 82
And crush, the most single gap location that can be snapped down to adapt to its particle diameter that gathers materials drops on base plate 86 or is subject to
Fall after extruding on base plate 86.Rubber sleave is utilized to have the ability of certain elastic deformation power, in extrusion process
In single gathering materials will not be damaged, will not its loss of strength.
From above description process, two adjacent fragmentation cells 82, as it rotates dorsad, then can not
Milling material between the two is produced squeezing effect.And two fragmentation cells rotated dorsad 82, go up the most just
In the two pairs of fragmentation cells 82 stated, two middle fragmentation cells 82.So, for this " useless area ",
The fewest milling material is preferably made to fall between the fragmentation cell 82 that the two rotates dorsad, then the two is broken
Gap between broken unit 82 should be smaller, makes some particle diameters can therefrom fall by milling material up to standard, and
And the two fragmentation cell 82 should be arranged in parallel so that it is spacing is consistent.Meanwhile, also should avoid in blow tank 7
The milling material flowed down falls between two pairs of fragmentation cells 82；Even if falling at two fragmentation cells rotated dorsad
Between 82, then milling material small particle, up to standard can fall, the milling material of other big particle diameter is turning
Under dynamic effect, can transfer between the fragmentation cell 82 of its two adjacent rotating in same directions, through being squeezed and
Shattering process.
Certainly, the fragmentation cell 82 rotated in opposite directions for a pair constitutes the minimum mechanism for attrition crushing milling material,
So multipair fragmentation cell 82 can be set according to treatment scale and being actually needed in broken working group 8,
Milling material is processed simultaneously.
Broken working group 8 arranges more than one, is from top to bottom crisscross arranged；Milling material is through a broken job
After group 8 screening, the highest point of the broken working group 8 fallen thereunder.
Through a broken working group 8 broken after, the particle diameter of part milling material is still difficult to reach requirement, because of
This needs repeatedly milling material to be carried out crushing process repeatedly.Broken working group 8 is preferably provided more than one, real
In the application process of border, should determine brokenly according to required particle size after the particle size of milling material entirety and process
The quantity of broken working group 8.In example as shown in Figure 1, give two broken working groups 8 and be crisscross arranged
Schematic diagram.
Being crisscross arranged here, two the broken working groups 8 up and down being adjacent do not contact, but Liang Ge working group
The elongated surfaces of base plate 86 place plane can intersect, and two base plate 86 place planes are all horizontal by sharp
Angle.The mode being so crisscross arranged, milling material is after the broken working group 8 of above processes, from upper one
The position lowest part of working group is slipped to the position highest point of a following working group, and by this working group position
Highest point is to the direction of lowest part, and milling material have passed through whole break process process.According to this set-up mode,
Multiple broken working group 8 is from top to bottom set, and is located following broken working group 8, turn the most in opposite directions
At the distance minimum of the dynamic spacing between fragmentation cell 82, answer upper working group to compare and suitably turn one down
A bit.Such as, in a broken working group 8 located above, between two fragmentation cells rotated in opposite directions 82
Minimum range be 5mm, then in the working group being located below, this spacing could be arranged to 4mm or
3mm。
Screen cloth 9 is obliquely installed, and from top to bottom arranges more than one；Through screen cloth 9 sieve after, screen cloth 9 it
On milling material fall in collecting box 11.
Screen cloth 9 carries and the milling material after break process carries out the effect that screening is collected.Screen cloth 9 can use
Square-mesh screen 9, sieve aperture is such as 10mm.Screen cloth 9 should be obliquely installed, horizontal by acute angle, then is passing through
After screen cloth 9 screening, the milling material that particle diameter is less is fallen on a following screen cloth 9 from the mesh of screen cloth 9,
And the milling material that screen cloth 9 stays above is obliquely installed due to it, the collection on side can be slipped under gravity
In case 11.And screen cloth 9 below is identical with screen cloth 9 set-up mode above, but the screen cloth 9 being located below
Mesh is less than the sieve aperture of screen cloth 9 located above.Such set-up mode makes not stay on screen cloth 9 material, can be right
Milling material is collected respectively according to its particle size range difference；When taking, it is only necessary to different according to screen cloth 9 aperture
Select corresponding collecting box 11, i.e. can get the milling material after particle diameter within the specific limits broken.Through entirety
After screening, the maximum milling material of particle diameter, gather materials or be positioned at a screen cloth topmost without the most broken milling material
In the collecting box 11 of 9 correspondences, as its size is unsatisfactory for requirement, it can be put into heated transportation system again
In carry out the shattering process of a new round.
In drum 2, the axial distribution along drum 2 has helical blade 6, and helical blade 6 is inside drum 2
Form screw type chute to carry milling material；Drum 2 is driven rotation by the second motor 10.
Drum 2 is used for carrying milling material, and carries out the most heated with heating system cooperation to milling material
Journey.The requirement of drum 2 is, can make milling material carry out abundant, carry uniformly, and can in course of conveying,
Milling material is sufficiently exposed, make the surface of milling material in limited conveying distance, can be at heater
Effect under, reach sufficiently to soften requirement.According to these requirements, this programme arranges drum 2 mechanism, as
Shown in Fig. 1, Fig. 4, helical blade 6 axially distributed in drum 2, define spirality chute；And
Drum 2 is in rotary state under the driving of the second motor 10, and the when of rotation, milling material obtains
The power advanced, is transported to front end along spirality chute from drum 2 rear end.Owing to drum 2 is to rotate,
So milling material is during conveying, is in flowing, tumbling state, so in multivariant condition
Under, make the surface of milling material can there is a greater chance that and heating means touch, and each part in surface can obtain
To uniform heating and softening.
Outside drum 2, it is additionally provided with fixing bucket 3, is used for installing drum 2, drum 2 is wrapped in solid simultaneously
Determining in bucket 3, the normal rotation for drum 2 plays a protective role.
Heater includes being looped around the outside oil pipe 5 arranged of drum 2, and oil pipe 5 connects a hot oil pump 4；
Move in oil pipe 5 in the direction that the deep fat pumped out in hot oil pump 4 is advanced in drum 2 along milling material.
A kind of relatively reasonable heater, uses hot oil pump 4.As in figure 2 it is shown, hot oil pump 4 is by oil pipe 5
Being looped around on drum 2 circumference, drum 2 is heated by the deep fat pumped out；Milling material within drum 2 is defeated
During sending, whole process and drum 2 sidewall contact, then just can sufficiently be heated at course of conveying.
Owing to the heating-up temperature of milling material only need to reach more than the softening point of Bituminous concrete surface, therefore use that conduction oil is this to be added
Hot mode can meet being actually needed of production completely.This mode of heating is different from conventional flame heater,
During this mode of heating, the pitch in old material will not contact with naked light, can be prevented effectively from the burn of Bituminous concrete surface with
And contingent fire safety evaluating accident.Other rational mode of heatings can also be used, such as electric-heating-wire-heating side
Formula etc., but heating-up temperature to be avoided is too high and makes pitch burn, and naked light to be avoided contacts with milling material.
It is provided with cutting plate 12 on blow tank 7, makes milling material not fall between two pairs of fragmentation cells 82.
From setting above, milling material, during falling from blow tank 7, falls in broken working group
On 8.Crush and working group 8 arranges two fragmentation cells 82 to rotating in opposite directions, and these two pair fragmentation cell 82
Between be " useless area ", therefore milling material should be avoided to fall in this scope as far as possible.Therefore, reclaiming plate sets
It is equipped with cutting plate 12, as shown in Fig. 2, Fig. 5, is positioned at the front end of reclaiming plate, such as block the dividing for a triangle
Flitch 12, milling material from drum 2 out after, along blow tank 7 flow to cutting plate 12 when, be divided into
Twice, respectively fall between two fragmentation cells 82 to rotating in opposite directions, thus are prevented effectively from middle feelings
Condition.
Utilize the present invention as follows to the pre-treatment step of bituminous paving milling material:
1, checking equipment, connect required power supply, whether inspection equipment works well；
2, open hot oil pump 4, until the temperature of conduction oil reach to set temperature required time by forklift feeding extremely
In feed well 1；
3, it is spaced at regular intervals, by the temperature of milling material at thermometer measure blow tank 7, it is to avoid temperature
Too high cause pitch secondary aging and heating-up temperature does not reaches and requires to affect the operating efficiency of sieving approach；
4, many heaps can be divided into according to the size of particle diameter, by nethermost screen cloth by the milling material of tilting screen cloth 9
Milling material below 9 is transported in milling material (the fines 0～10mm) feed bin planned in advance by forklift,
Then the milling material classification of different-grain diameter in the collecting box 11 of each screen cloth 9 correspondence is transported and storage；
5, feed bin should carry out the measures such as guarded drainage, and the many grades of milling materials pre-processed enter sampling respectively, right
Its bitumen content and gradation composition are measured, and the experimental result of acquisition is used for heat regeneration asphalt mixture
Mix-design.
Claims (10)
1. a squash type bituminous paving milling material crushing and screening device, it is characterised in that include heated transportation system and pulverizing-screening system；
Heated transportation system includes drum (2), milling material is rotated the blow tank (7) being delivered to drum (2) front end by drum (2) by the feed well (1) of drum (2) rear end, and is provided with the heater of heating milling material on drum (2)；
Pulverizing-screening system is arranged at the lower section of blow tank (7), is obliquely installed；Pulverizing-screening system include by multiple can the broken working group (8) that forms of the fragmentation cell (82) of rotation, collected by screen cloth (9) after fragmentation cell (82) extruding that the milling material in broken working group (8) that falls is rotated.
2. squash type bituminous paving milling material crushing and screening device as claimed in claim 1, it is characterized in that, described broken working group (8) includes fixed case (81) and fixed plate (85), connected by the base plate (86) with edge baffle plate (83) between fixed case (81) and fixed plate (85), described fragmentation cell (82) is arranged on base plate (86), and fragmentation cell (82) is axially the direction from fixed case (81) to fixed plate (85).
3. squash type bituminous paving milling material crushing and screening device as claimed in claim 1 or 2, it is characterized in that, described fragmentation cell (82) includes the first motor (821) that rotating shaft (822) and drive shaft (822) rotate, and is coated with elastic surface layer (823) in rotating shaft (822).
4. squash type bituminous paving milling material crushing and screening device as claimed in claim 1 or 2, it is characterised in that between described multiple fragmentation cells (82), the rotation direction of two adjacent fragmentation cells (82) is contrary.
5. squash type bituminous paving milling material crushing and screening device as claimed in claim 2, it is characterized in that, described broken working group (8) is provided with two pairs of fragmentation cells (82), in every a pair fragmentation cell (82), the distance between two fragmentation cells (82) is gradually increased from fixed case (81) to the direction of fixed plate (85)；Two pairs of fragmentation cells (82) are arranged parallel, and two fragmentation cells (82) close to each other in two pairs of fragmentation cells (82) be arranged in parallel.
6. squash type bituminous paving milling material crushing and screening device as claimed in claim 1 or 2, it is characterised in that described broken working group (8) arranges more than one, is from top to bottom crisscross arranged；Milling material after the screening of broken working group (8), the highest point of the broken working group (8) fallen thereunder.
7. squash type bituminous paving milling material crushing and screening device as claimed in claim 1, it is characterised in that described screen cloth (9) is obliquely installed, and from top to bottom arranges more than one；After screen cloth (9) sieves, the milling material on screen cloth (9) falls in collecting box (11).
8. squash type bituminous paving milling material crushing and screening device as claimed in claim 1, it is characterized in that, in described drum (2), axial distribution along drum (2) has helical blade (6), and helical blade (6) is internally formed screw type chute to carry milling material at drum (2)；Drum (2) is driven by the second motor (10) and rotates.
9. the squash type bituminous paving milling material crushing and screening device as described in claim 1 or 8, it is characterized in that, described heater includes being looped around the outside oil pipe (5) arranged of drum (2), and oil pipe (5) connects a hot oil pump (4)；The deep fat pumped out in hot oil pump (4) is motion in oil pipe (5) along the direction that milling material is advanced in drum (2).
10. squash type bituminous paving milling material crushing and screening device as claimed in claim 5, it is characterised in that be provided with cutting plate (12) on described blow tank (7), make milling material not fall between two pairs of fragmentation cells (82).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410653952.3A CN104480832B (en) | 2014-11-17 | 2014-11-17 | A kind of squash type bituminous paving milling material crushing and screening device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410653952.3A CN104480832B (en) | 2014-11-17 | 2014-11-17 | A kind of squash type bituminous paving milling material crushing and screening device |
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| CN104480832A CN104480832A (en) | 2015-04-01 |
| CN104480832B true CN104480832B (en) | 2016-09-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105821740A (en) * | 2016-03-29 | 2016-08-03 | 南方高科工程技术有限公司 | Regeneration screening device special for old asphalt material |
| CN105803898B (en) * | 2016-03-29 | 2017-10-24 | 南方高科工程技术有限公司 | A kind of batch (-type) cold asphalt rehabilitation blending craft |
| CN112030673A (en) * | 2020-10-29 | 2020-12-04 | 济南大学 | Old and useless milling and planing material of pitch is broken stirring heating device again |
| CN113944081B (en) * | 2021-11-02 | 2023-05-05 | 四川仁沐高速公路有限责任公司 | Reclaimed asphalt recycling feeder for highway construction |
| CN114411487B (en) * | 2022-01-25 | 2022-08-30 | 平山县畅通公路养护工程有限公司 | Environment-friendly mixing device for asphalt road paving material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2972543B2 (en) * | 1995-02-20 | 1999-11-08 | 田中鉄工株式会社 | Asphalt pavement waste material recycling device |
| CN2732813Y (en) * | 2004-09-16 | 2005-10-12 | 杭州市政机械厂 | Reclaiming device for asphalt pavement materials |
| JP4443374B2 (en) * | 2004-10-15 | 2010-03-31 | 日工株式会社 | Asphalt pavement waste recycling equipment |
| JP5713583B2 (en) * | 2010-06-08 | 2015-05-07 | 有限会社富士川産業 | Method for producing recycled asphalt simple pavement material from asphalt waste |
| CN103397589A (en) * | 2013-08-04 | 2013-11-20 | 郴州市三联路面机械有限责任公司 | Roller used for heating, drying and continuous stirring to produce thermal regeneration mixture |
| CN204251990U (en) * | 2014-11-17 | 2015-04-08 | 长安大学 | A kind of squash type flexible pavement milling material crushing and screening device |
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