CN210596912U - Asphalt mixture regeneration equipment - Google Patents
Asphalt mixture regeneration equipment Download PDFInfo
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- CN210596912U CN210596912U CN201921316563.6U CN201921316563U CN210596912U CN 210596912 U CN210596912 U CN 210596912U CN 201921316563 U CN201921316563 U CN 201921316563U CN 210596912 U CN210596912 U CN 210596912U
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- 238000011069 regeneration method Methods 0.000 title claims abstract description 81
- 230000008929 regeneration Effects 0.000 title claims abstract description 80
- 239000010426 asphalt Substances 0.000 title claims abstract description 44
- 239000000203 mixture Substances 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 212
- 238000001035 drying Methods 0.000 claims abstract description 95
- 238000003860 storage Methods 0.000 claims abstract description 53
- 230000007704 transition Effects 0.000 claims abstract description 41
- 238000003756 stirring Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims description 237
- 239000006052 feed supplement Substances 0.000 claims description 51
- 239000002994 raw material Substances 0.000 claims description 38
- 239000000428 dust Substances 0.000 claims description 29
- 238000004064 recycling Methods 0.000 claims description 23
- 238000005303 weighing Methods 0.000 claims description 23
- 230000001172 regenerating effect Effects 0.000 claims description 22
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 21
- 239000011707 mineral Substances 0.000 claims description 21
- 238000011084 recovery Methods 0.000 claims description 21
- 241000208125 Nicotiana Species 0.000 claims description 14
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 13
- 241000196324 Embryophyta Species 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 10
- 239000002912 waste gas Substances 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000012492 regenerant Substances 0.000 abstract description 13
- 239000013589 supplement Substances 0.000 description 9
- 238000002156 mixing Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000003912 environmental pollution Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses an asphalt mixture regeneration device, which comprises a primary drying roller and a regeneration drying roller, wherein the primary drying roller and the regeneration drying roller are respectively arranged on the upper part of a main building in an inclined way, the lower end of the primary drying roller is provided with a burner shared with the regeneration drying roller, the higher end of the primary drying roller is opposite to the lower end of the regeneration drying roller, and a transition chamber is connected between the higher end of the primary drying roller and the lower end of the regeneration drying roller, the lower part of the transition chamber is provided with two discharge channels and a regeneration distributing mechanism for controlling the two discharge channels to select for discharge, the middle part of the main building is provided with two regeneration hot material temporary storage bins correspondingly communicated with the two discharge channels of the transition chamber, the tops of the two regeneration hot material temporary storage bins are jointly connected with a regenerant temporary storage device, a regeneration material metering hopper is arranged below the two regeneration hot material temporary storage bins, a finished product bin is arranged below the stirring cylinder. The utility model discloses the energy saving, green.
Description
Technical Field
The utility model belongs to the technical field of the bituminous mixture stirring, concretely relates to bituminous mixture regeneration facility.
Background
With the development of Asphalt Pavement engineering in China, most of Asphalt pavements built in traffic vehicles at an early stage enter a major-medium repair stage, and the produced waste Asphalt mixture (RAP) is increasing year by year. As the regeneration technology of the Chinese asphalt pavement is started late and the policy promotion is not large, the regeneration technology is gradually forming at present. At present, the common thermal regeneration technology in China has two application forms: one is in-situ and the other is plant-mixed. The in-situ heat regeneration equipment, also called a regeneration train, is characterized by fast road surface regeneration treatment and little traffic influence, but has the defects of limited road surface thickness (more suitable for preventive maintenance), serious environmental pollution caused by waste gas emitted from the road surface in the heating process and expensive equipment. The plant mixing hot recycling equipment is a fixed asphalt mixture recycling station which can be matched with a stirring station for use. The method has the advantages of high controllability of the quality of finished products, simple operation and lower equipment purchase cost. According to the related data, the plant mixing heat regeneration mode has the highest utilization rate in the global range, is the only mode that the performance of the mixture can be compared with that of a new material in a plurality of regeneration modes, and is the regeneration mode of the Chinese mainstream in China according to the current use condition of China.
As the asphalt highway surface built in the earlier period enters the overhaul maintenance period, a large amount of old asphalt milling materials are generated. Along with the deepening of the energy-saving and environment-friendly concept, the cost can be reduced by using a large amount of recycled asphalt materials, but the cost also means that more maintenance is needed for stirring equipment, and the requirement on the wear resistance is higher. In the past, the mixing equipment mainly carries out hot mixing by adding the primary aggregate, the new powder and the heated asphalt, and as the recycled materials of roads increase, some recycled materials are slowly added to be mixed with the primary aggregate to produce the required asphalt mixture. All traditional stirring equipment in the market adopts double drying rollers, each roller is provided with a burner, and the primary material and the secondary material are respectively heated; it goes without saying that the dual burner operation is energy intensive, resulting not only in a large consumption of fuel and electricity, but also in a high exhaust emission.
SUMMERY OF THE UTILITY MODEL
In view of the deficiencies of the prior art, the utility model aims to provide an asphalt mixture regeneration facility, it can the energy saving, green.
In order to solve the technical problem, the utility model discloses a technical scheme is: an asphalt mixture regeneration device comprises a primary drying roller and a regeneration drying roller, wherein the primary drying roller and the regeneration drying roller are respectively obliquely arranged on the upper part of a main building, a burner shared with the regeneration drying roller is arranged at the lower end of the primary drying roller, the higher end of the primary drying roller is opposite to the lower end of the regeneration drying roller, and a transition bin is connected between the higher end of the primary drying roller and the lower end of the regeneration drying roller, two discharge channels and a regeneration distributing mechanism for controlling the two discharge channels to selectively discharge are arranged at the lower part of the transition bin, two regeneration hot material temporary storage bins correspondingly communicated with the two discharge channels of the transition bin are arranged in the middle of the main building, the tops of the two regeneration hot material temporary storage bins are jointly connected with a regeneration agent temporary storage adding device, a regeneration material metering hopper is arranged below the two regeneration hot material temporary storage bins, and a stirring cylinder is arranged below the regeneration material, one side top of agitator tank is provided with the primary material chute, the top of primary raw material chute is provided with the primary material weighing hopper, the top of primary raw material weighing hopper is provided with primary raw material hot aggregate storehouse, the top of primary raw material hot aggregate storehouse is provided with the primary raw material shale shaker, the feed inlet of primary raw material shale shaker is connected with the lower end bottom discharge gate of primary drying roller, the opposite side top of agitator tank is provided with pitch metering cylinder, powdered ore weighing hopper and sack cleaner, the below of agitator tank is provided with the finished product feed bin.
Preferably, a row of powder partition plates distributed at intervals up and down are arranged in the transition bin, the powder partition plates are fixed in an inclined mode, a hot air inclined through hole is formed between every two adjacent powder partition plates, the lower end of each hot air inclined through hole faces to the original drying roller, and the higher end of each hot air inclined through hole faces to the regeneration drying roller.
Preferably, a material sliding guide plate for guiding the primary material to enter the higher end of the primary drying roller is arranged in the transition bin.
Preferably, the lower part of transition bin is provided with the primary coarse powder dust collecting bucket body that is located the higher end below of primary drying drum, the lower part of primary coarse powder dust collecting bucket body is provided with back powder screw conveyer, the powder outlet of returning powder screw conveyer is connected with the powder inlet of coarse powder recovery screw conveyer, the powder outlet of coarse powder recovery screw conveyer is linked together with the powder inlet of primary material shale shaker.
Preferably, the higher extreme of regeneration drying drum is equipped with the exhaust gas chamber, the upper portion of exhaust gas chamber is connected with first induced air tobacco pipe, the air outlet of first induced air tobacco pipe is connected with the air intake of first draught fan, the air outlet of first draught fan is connected with the air intake of sack cleaner.
Preferably, the bottom of the waste gas chamber is provided with a dust collecting hopper, a powder belt conveyor is arranged below a discharge port of the dust collecting hopper, and a discharge end of the powder belt conveyor leads to one temporary storage bin for regenerated hot materials.
Preferably, the upper portion of transition bin is connected with second induced draft tobacco pipe, the air outlet of second induced draft tobacco pipe is connected with the air intake of second draught fan, the air outlet of second draught fan is connected with the air intake of sack cleaner.
Preferably, the upper part of the stirring cylinder is connected with a negative pressure bent pipe, the negative pressure bent pipe is in a shape like a Chinese character 'ji', and the other end of the negative pressure bent pipe is connected to an air inlet of the bag-type dust collector.
Preferably, the upper portion of waste gas room is connected with first return air tobacco pipe, the air outlet of first return air tobacco pipe is connected with the air intake of third draught fan, the air outlet of third draught fan is connected with the air intake of second return air tobacco pipe, the air outlet of second return air tobacco pipe is connected with the lower end of primary drying roller and leads to the place ahead of combustor.
Preferably, the device also comprises a raw material supply device.
Further preferably, the primary material feeding device comprises a primary material bin, a primary material collecting belt conveyor, a primary material elevator and an upper belt conveyor, wherein the primary material bin is arranged beside the bottom of the main building, the bottom of the primary material bin is provided with a primary material grading belt conveyor, the discharge end of the primary material grading belt conveyor is arranged above the feed end of the primary material collecting belt conveyor, the discharge end of the primary material collecting belt conveyor is arranged above the feed inlet of the primary material elevator, the discharge port of the primary material elevator is arranged above the feed end of the upper belt conveyor, the discharge end of the upper belt conveyor leads to the primary material inlet of the transition bin, and the primary material outlet of the transition bin leads to the higher-end feed inlet of the primary drying roller.
Preferably, the device also comprises a reclaimed material supply device.
Further preferably, the reclaimed material feeding device comprises a reclaimed material bin, a reclaimed material belt conveyor and a reclaimed material elevator, the reclaimed material bin is arranged beside the bottom of the main building, the bottom of the reclaimed material bin is provided with a reclaimed material grading belt conveyor, the discharge end of the reclaimed material grading belt conveyor is arranged above the feed end of the reclaimed material belt conveyor, the discharge end of the reclaimed material belt conveyor is arranged above the feed inlet of the reclaimed material elevator, and the discharge port of the reclaimed material elevator leads to the higher-end feed inlet of the reclaimed drying roller.
Preferably, the device also comprises a regeneration cold-feeding material supply device.
Further preferably, regeneration cold feed supplement feeding device includes cold feed supplement feed bin, cold feed supplement band conveyer and cold feed supplement lifting machine, the cold feed supplement feed bin sets up on the bottom next door of main building, the bottom of cold feed supplement feed bin is provided with cold feed supplement gradation band conveyer, the discharge end that cold feed supplement gradation band conveyer was joined in marriage sets up in the feed end top of cold feed supplement aggregate band conveyer, the discharge end of cold feed supplement band conveyer sets up in the feed inlet top of cold feed supplement lifting machine, the discharge gate of cold feed supplement lifting machine accesss to cold feed supplement temporary storage storehouse, the below in cold feed supplement temporary storage storehouse is provided with the cold feed supplement batch weigher, the below of cold feed batch weigher is provided with cold feed supplement band conveyer, the discharge end of cold feed supplement band conveyer accesss to the agitator tank.
Preferably, the device also comprises a mineral powder supply device.
Further preferably, the mineral powder supply device comprises a new powder tank, a recovered powder tank, a new powder screw conveyor, an old powder screw conveyor, a recovered powder elevator, a recovered powder temporary storage bin and a recovered powder screw conveyor, the powder outlet at the bottom of the new powder tank is connected with the powder inlet of the new powder screw conveyor, the powder outlet of the new powder screw conveyor is arranged above the powder inlet of the mineral powder weighing hopper, the powder outlet at the bottom of the powder recovery tank is connected with the powder inlet of the old powder screw conveyor, the powder outlet of the old powder screw conveyor is arranged above the powder inlet of the powder recovery lifting machine, the powder outlet of the recovered powder lifting machine is connected with the powder inlet of the recovered powder temporary storage bin, the powder outlet of the recovered powder temporary storage bin is connected with the powder inlet of the recovered powder spiral conveyor, and the powder outlet of the recovered powder spiral conveyor is arranged above the powder inlet of the mineral powder metering hopper.
Further, a powder discharge port at the lower part of the powder recovery tank is connected with a feed port of a powder discharge screw conveyer, and a discharge port of the powder discharge screw conveyer is arranged above a powder inlet of the humidifier; the powder outlet of the bag-type dust collector is connected with the powder inlet of the old powder recovery screw conveyor, and the powder outlet of the old powder recovery screw conveyor is connected with the powder inlet of the powder recovery tank.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a new generation drying process simplifies the thermal part that produces, and two drying roller sharing combustors use a single combustor to provide and are used for heating the energy of original material in the original drying roller, then according to the mixture that will produce shift the heat that needs to the regeneration drying roller, heat RAP material, energy saving.
The heating value of the RAP material comes from the hot gas drying and heating of the primary drying drum, the use of which avoids the contact between the flame of the burner and the recycled material and the direct radiation of the flame on the RAP material, in such a way that the temperature options in the heating of the recycled material are limited.
The RAP material comes out of the regenerative drying drum with a minimum temperature of 160 ℃, allowing the operation of producing bitumen with up to 100% RAP material, or in any case, mixing various bitumens with a high proportion of RAP material, without overheating the original aggregate, saving energy and maintaining the quality of the residual bitumen contained in the RAP material.
The utility model discloses place two drying drum in main building top, can prevent because any possible adhesion that the material arouses is retrieved in hot recycling to still have the advantage that promotes the material all the time under ambient temperature.
Additionally, the utility model discloses a smoke management system of innovation, all particles and blue smog can all be sent back primary drying drum and introduce at the burner flame back, and this process helps reducing emission and smell by a wide margin, green.
Drawings
Fig. 1 is a first perspective view of an asphalt mixture recycling device according to an embodiment of the present invention.
Fig. 2 is an enlarged upper view of fig. 1.
Fig. 3 is a second perspective view of the asphalt mixture recycling device of the embodiment of the present invention.
Fig. 4 is an enlarged upper view of fig. 3.
Fig. 5 is a third perspective view of the asphalt mixture recycling device according to the embodiment of the present invention.
Fig. 6 is an enlarged upper view of fig. 5.
Fig. 7 is an enlarged view of the lower portion of fig. 5.
Fig. 8 is a partial structure diagram of a transition bin according to an embodiment of the present invention.
Fig. 9 is a structural diagram of the regeneration material distributing mechanism when controlling the opening of a material outlet channel.
Fig. 10 is a structural diagram of the regeneration material distributing mechanism for controlling the opening of another material outlet channel.
Fig. 11 is a side view of a regenerative feed mechanism.
The labels in the figure are: 1. a primary material bin, 2, a primary aggregate belt conveyor, 3, a primary material hoister, 4, an upper belt conveyor, 5, a transition bin, 6, a primary drying roller, 7, a primary material vibrating screen, 8, a primary material hot bin, 9, a primary material metering hopper, 10, a primary material chute, 11, a stirring cylinder, 12, a finished product bin, 13, a regenerated material bin, 14, a regenerated aggregate belt conveyor, 15, a regenerated material hoister, 16, a regenerated drying roller, 17, a regenerated hot material temporary storage bin, 18, a regenerated material metering hopper, 19, a regenerant adding device, 20, a burner, 21, a cold-supplement material bin, 22, a cold-supplement material belt conveyor, 23, a cold-supplement material hoister, 24, a cold-supplement material temporary storage bin, 25, a cold-supplement material metering hopper, 26, a cold-supplement belt conveyor, 27, a first return air smoke pipe, 28, a recovery spiral conveyor, 29. bag-type dust collector, 30, powder belt conveyor, 31, waste gas chamber, 32, first induced draft fan, 33, second induced draft fan, 34, negative pressure bend pipe, 35, new powder tank, 36, recovered powder tank, 37, powder discharge screw conveyor, 38, humidifier, 39, old powder screw conveyor, 40, recovered powder lifter, 41, recovered powder temporary storage bin, 42, recovered powder screw conveyor, 43, mineral powder measuring hopper, 44, new powder screw conveyor, 45, old powder recovery screw conveyor, 46, asphalt measuring cylinder, 47, third induced draft fan, 48, second air return smoke pipe, 49, second air return smoke pipe, 50, first air return smoke pipe, 51, powder partition board, 52, hot gas inclined through hole, 53, primary dust collecting hopper body, 54, powder return screw conveyor, 55, regeneration distributing mechanism, 56, material sliding guide board, 57, distributing board, 58, driving mechanism, 59, swing arm, 60. cylinder, 61, travel switch.
Detailed Description
In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1 to 7, the embodiment provides an asphalt mixture recycling device, which includes a primary drying roller 6 and a secondary drying roller 16, wherein the primary drying roller 6 and the secondary drying roller 16 are respectively installed on the upper portion of a main building in an inclined manner, a burner 20 shared by the secondary drying roller 16 is installed at the lower end of the primary drying roller 6, the higher end of the primary drying roller 6 is opposite to the lower end of the secondary drying roller 16, a transition chamber 5 is connected between the primary drying roller and the secondary drying roller, the lower portion of the transition chamber 5 is provided with two discharge channels and a secondary material distribution mechanism 55 for controlling one discharge of the two discharge channels, two secondary hot material temporary storage bins 17 correspondingly communicated with the two discharge channels of the transition chamber 5 are installed in the middle of the main building, and the tops of the two secondary hot material temporary storage bins 17 are commonly connected with a regeneration agent adding device 19, the regenerant is weighed and metered by a regenerant adding device 19 and then sprayed into a temporary storage bin 17 of the regenerated hot material, and the added temporary storage bin 17 of the regenerated hot material can ensure that the regenerant has sufficient time to be fully dispersed, permeated and mixed with the old asphalt in the RAP; a stirring cylinder 11 is arranged below the regenerated material metering hopper 18, a regenerated material metering hopper 18 is arranged below the two regenerated hot material temporary storage bins 17, the two regenerated hot material temporary storage bins 17 can temporarily store regenerated hot materials with two specifications, the regenerated hot materials can be respectively weighed, metered, thrown and stirred, and a regenerated material grading independent metering process is realized; one side top of agitator tank 11 is provided with former raw material chute 10, the top of former raw material chute 10 is provided with former raw material weighing hopper 9, the top of former raw material weighing hopper 9 is provided with former raw material hot aggregate storehouse 8, the top of former raw material hot aggregate storehouse 8 is provided with former raw material shale shaker 7, the feed inlet of former raw material shale shaker 7 is connected with the lower end bottom discharge gate of former drying drum 6, the opposite side top of agitator tank 11 is provided with pitch metering cylinder 46, powdered ore weighing hopper 43 and sack cleaner 29, the below of agitator tank 11 is provided with finished product feed bin 12.
In the present embodiment, as shown in fig. 8, in order to isolate the raw material from the recycled material and ensure the circulation of hot air, a row of a plurality of powder partition plates 51 are arranged in the transition chamber 5, the powder partition plates 51 are fixed in an inclined manner, a hot air inclined through hole 52 is formed between two adjacent powder partition plates 51, the lower end of the hot air inclined through hole 52 faces the raw drying drum 6, and the higher end of the hot air inclined through hole 52 faces the recycled drying drum 16. In order to facilitate the raw material to rapidly and accurately enter the raw drying roller 6, a material sliding guide plate 56 for guiding the raw material to enter the higher end of the raw drying roller 6 is arranged in the transition bin 5. In order to recover the dust generated when the raw material is fed into the raw drying drum 6, the lower part of the transition bin 5 is provided with a raw coarse powder dust collecting hopper body 53 positioned below the higher end of the raw drying drum 6, the lower part of the raw coarse powder dust collecting hopper body 53 is provided with a powder returning screw conveyor 54, the powder outlet of the powder returning screw conveyor 54 is connected with the powder inlet of the coarse powder recovering screw conveyor 28, the powder outlet of the coarse powder recovering screw conveyor 28 is communicated with the powder inlet of the raw material vibrating screen 7, and the coarse powder is put into the raw material vibrating screen 7 for use.
As shown in fig. 9 to 11, the regeneration distributing mechanism 55 includes a distributing plate 57 and a driving mechanism 58, the lower portion of the distributing plate 57 is rotatably installed at the lower portion of the transition chamber 5, two ends of a rotating shaft of the distributing plate 57 are respectively exposed outside the transition chamber 5, the driving mechanism 58 is installed at the outer wall of the transition chamber 5, and the driving mechanism 58 drives the distributing plate 57 to swing to switch two discharging channels; further, the driving mechanism 58 comprises a swing arm 59 and an air cylinder 60, one end of the swing arm 59 is fixedly connected with one end of a rotating shaft of the material distributing plate 57, a cylinder end of the air cylinder 60 is hinged and fixed on the outer wall of the transition bin 5, a piston rod end of the air cylinder 60 is hinged with the other end of the swing arm 59, and the swing arm 59 is pushed and pulled to rotate through the air cylinder 60, so that the material distributing plate 57 rotates to open one of the material discharging channels and close the other material discharging channel, and a material is selected to be discharged; in order to better control the position of the material distributing plate 57, a travel switch 61 for triggering the swing arm 59 to rotate in place is installed on the outer wall of the transition chamber 5, and is preferably but not limited to be arranged above the swing arm 59, when a piston rod of the air cylinder 60 contracts, the swing arm 59 rotates clockwise, when the piston rod contacts the travel switch 61 in a rotating manner, the air cylinder 60 is controlled to stop acting through a controller (a single chip microcomputer, a PLC and other existing control devices, and the specific model is not limited), and at this time, the material distributing plate 57 is switched from the left side to the right side; of course, the driving mechanism 58 may be a hydraulic cylinder, an electric motor, or the like, and the swing arm 59 may be omitted, and only the material distributing plate 57 may be driven to rotate.
In this embodiment, in order to reduce environmental pollution, the higher end of regeneration drying drum 16 is equipped with exhaust chamber 31, the upper portion of exhaust chamber 31 is connected with first induced air tobacco pipe 50, the air outlet of first induced air tobacco pipe 50 is connected with the air intake of first draught fan 32 (preferably but not limited to frequency conversion draught fan), the air outlet of first draught fan 32 is connected with the air intake of sack cleaner 29, and the dust flue gas discharges to the atmosphere after the sack cleaner 29 filters. In order to recover the dust generated when the reclaimed materials are fed to the reclaiming drying roller 16, a dust collecting hopper is arranged at the bottom of the waste gas chamber 31, a powder belt conveyor 30 is arranged below a discharge port of the dust collecting hopper, and a discharge end of the powder belt conveyor 30 leads to one of the reclaiming hot material temporary storage bins 17 to reuse the powder.
In this embodiment, in order to reduce environmental pollution, the upper portion of the transition bin 5 is connected with a second induced draft smoke tube 49, an air outlet of the second induced draft smoke tube 49 is connected with an air inlet of a second induced draft fan 33 (preferably but not limited to a variable frequency induced draft fan), an air outlet of the second induced draft fan 33 is connected with an air inlet of a bag-type dust remover 29, and dust smoke is filtered by the bag-type dust remover 29 and then discharged to the atmosphere. In order to reduce environmental pollution, the upper portion of agitator tank 11 is connected with negative pressure return bend 34, negative pressure return bend 34 is several font, negative pressure return bend 34's the other end is connected to the air intake of sack cleaner 29, can enough carry out the condensation backward flow to steam such as pitch through the corner of negative pressure return bend 34, can discharge sack cleaner 29 with the dust that the stirring produced again, and the dust flue gas discharges to the atmosphere after sack cleaner 29 filters, can also make the negative pressure in the agitator tank 11 even, improves measurement accuracy's stability.
In this embodiment, in order to reduce environmental pollution, the upper portion of the waste gas chamber 31 is connected with a first air return flue pipe 27, the air outlet of the first air return flue pipe 27 is connected with the air inlet of a third induced draft fan 47 (preferably but not limited to a variable frequency induced draft fan), the air outlet of the third induced draft fan 47 is connected with the air inlet of a second air return flue pipe 48, the air outlet of the second air return flue pipe 48 is connected with the lower end of the primary drying roller 6 and leads to the front of the burner 20, all particles and blue smoke are sent back to the primary drying roller 6 and introduced behind the flame of the burner 20, harmful gas is burned and then discharged, and this process helps to greatly reduce emissions and odor.
In this embodiment, the asphalt mixture recycling equipment further comprises a raw material supply device, and a discharge port of the raw material supply device is communicated with a feed port of the raw drying roller 6. Wherein, the raw meal supply device preferably but not limited adopts the following structure: including former raw material feed bin 1, the primary belt conveyor that gathers materials 2, primary material lifting machine 3 and upper portion band conveyer 4, former raw material feed bin 1 sets up the bottom next door at the main building, the bottom of former raw material feed bin 1 is provided with former raw material gradation belt conveyor, the discharge end that primary material gradation belt conveyor was joined in marriage sets up in the feed end top of primary belt conveyor 2 that gathers materials, the discharge end of primary belt conveyor 2 that gathers materials sets up in the feed inlet top of former raw material lifting machine 3, the discharge gate of former raw material lifting machine 3 sets up in the feed end top of upper portion belt conveyor 4, the discharge end of upper portion belt conveyor 4 accesss to the primary material import of transition bin 5, the primary material export of transition bin 5 accesss to the higher end feed inlet of primary drying cylinder 6. The raw material is firstly conveyed to a primary aggregate belt conveyor 2 by a primary material grading belt conveyor, then conveyed to a primary material elevator 3 by the primary aggregate belt conveyor 2, then lifted to a top belt conveyor 4 by the primary material elevator 3, conveyed to a transition bin 5 by the top belt conveyor 4, thrown to a primary drying roller 6 by a material sliding guide plate 56 in the transition bin 5 for drying, and then temporarily stored, weighed and thrown into a stirring cylinder 11 for stirring after drying.
In this embodiment, the asphalt mixture recycling equipment further comprises a recycled material supply device, and a discharge port of the recycled material supply device is communicated with a feed port of the recycling drying drum 16. Wherein, the reclaimed material feeding device preferably but not limited adopts the following structure: including regeneration material feed bin 13, regeneration band conveyer 14 and the regeneration material lifting machine 15 of gathering materials, regeneration material feed bin 13 sets up the bottom next door at the main building, the bottom of regeneration material feed bin 13 is provided with regeneration material gradation band conveyer, regeneration material gradation band conveyer's discharge end sets up in regeneration material belt conveyer 14's feed end top of gathering materials, regeneration material belt conveyer 14's discharge end sets up in regeneration material lifting machine 15's feed inlet top, regeneration material lifting machine 15's discharge gate accesss to regeneration drying drum 16's higher end feed inlet. The reclaimed materials are conveyed to a reclaimed material belt conveyor 14 through a reclaimed material grading belt conveyor, conveyed to a reclaimed material hoister 15 through the reclaimed material belt conveyor 14, lifted and dried in a reclaimed drying roller 16, respectively thrown into two reclaimed hot material temporary storage bins 17 through a reclaimed material distributing mechanism 55 at the lower part of a transfer bin 5 after being dried, weighed and thrown into a stirring cylinder 11 for stirring.
In this embodiment, the asphalt mixture recycling equipment further comprises a recycling cold patch supply device, and a discharge port of the recycling cold patch supply device is communicated to the mixing tank 11. Wherein, the regeneration cold-patch feeding device preferably but not limited adopts the following structure: including cold feed supplement feed bin 21, cold feed supplement band conveyer 22 and cold feed supplement lifting machine 23 that gathers materials, cold feed supplement feed bin 21 sets up the bottom next door at the main building, the bottom of cold feed supplement feed bin 21 is provided with cold feed supplement gradation band conveyer, cold feed supplement gradation band conveyer's discharge end sets up in cold feed supplement gathering band conveyer 22's feed end top, cold feed supplement gathers materials band conveyer 22's discharge end and sets up in the feed inlet top of cold feed supplement lifting machine 23, cold feed supplement lifting machine 23's discharge gate accesss to cold feed supplement temporary storage bin 24, cold feed supplement temporary storage bin 24's below is provided with cold feed supplement batch weighing hopper 25, the below of cold feed batch weighing hopper 25 is provided with cold feed supplement band conveyer 26, cold feed supplement band conveyer 26's discharge end accesss to agitator 11. The regenerated cold-patch materials are conveyed to a cold-patch material aggregate belt conveyor 22 through a cold-patch material grading belt conveyor, conveyed to a cold-patch material hoister 23 through the cold-patch material aggregate belt conveyor 22, lifted to a cold-patch material temporary storage bin 24, weighed and conveyed to a stirring cylinder 11 through a cold-patch material belt conveyor 26 to be stirred.
In this embodiment, the asphalt mixture recycling equipment further includes a mineral powder supply device, and a powder outlet of the mineral powder supply device is communicated with a powder inlet of the mineral powder weighing hopper 43. Wherein, the mineral powder feeding device adopts the following structure preferably but not limited: the device comprises a new powder tank 35, a recovered powder tank 36, a new powder screw conveyor 44, an old powder screw conveyor 39, a recovered powder lifter 40, a recovered powder temporary storage bin 41 and a recovered powder screw conveyor 42, wherein a powder outlet at the bottom of the new powder tank 35 is connected with a powder inlet of the new powder screw conveyor 44, a powder outlet of the new powder screw conveyor 44 is arranged above a powder inlet of a mineral powder metering hopper 43, new powder is conveyed into the new powder tank 35 through a powder inlet pipeline of the new powder tank 35, and the new powder in the new powder tank 35 is conveyed to the mineral powder metering hopper 43 through the new powder screw conveyor 44 and is put into a stirring cylinder 11 after being weighed and metered; the bottom powder outlet of the recovered powder tank 36 is connected with the powder inlet of an old powder screw conveyor 39, the powder outlet of the old powder screw conveyor 39 is arranged above the powder inlet of a recovered powder elevator 40, the powder outlet of the recovered powder elevator 40 is connected with the powder inlet of a recovered powder temporary storage bin 41, the powder outlet of the recovered powder temporary storage bin 41 is connected with the powder inlet of a recovered powder screw conveyor 42, and the powder outlet of the recovered powder screw conveyor 42 is arranged above the powder inlet of a mineral powder metering hopper 43.
In this embodiment, in order to facilitate the treatment of the recovered powder, the powder discharge port at the lower part of the recovered powder tank 36 is connected to the feed port of the powder discharge screw conveyor 37, the discharge port of the powder discharge screw conveyor 37 is arranged above the powder inlet of the humidifier 38, the used old powder is humidified by the humidifier 38 to form wet ash, and the wet ash is transported away; in order to conveniently recover the old powder, a powder outlet of the bag-type dust collector 29 is connected with a powder inlet of an old powder recovery screw conveyor 45, a powder outlet of the old powder recovery screw conveyor 45 is connected with a powder inlet of a recovered powder tank 36, the old powder in the lower bin body of the bag-type dust collector 29 is conveyed to the recovered powder tank 36 through the old powder recovery screw conveyor 45, the old powder in the recovered powder tank 36 is conveyed to a recovered powder elevator 40 through an old powder screw conveyor 39, the recovered powder elevator 40 lifts the recovered powder to a recovered powder temporary storage bin 41 for storage, the old powder in the recovered powder temporary storage bin 41 is conveyed to a mineral powder metering hopper 43 through a recovered powder screw conveyor 42, and the mineral powder metering hopper is weighed and then put into the stirring cylinder 11.
The embodiment also provides an asphalt mixture regeneration method, which comprises the steps of adopting the asphalt mixture regeneration equipment, correspondingly feeding coarse raw materials and coarse reclaimed materials into the primary drying roller 6 and the regenerative drying roller 16, heating and drying the primary materials in the primary drying roller 6 through the burner 20, feeding the dried primary hot materials into the primary material vibrating screen 7 for vibrating screening, and feeding the screened primary hot materials with different grades into the primary raw material hot bin 8 for storage for later use; hot air in the primary drying roller 6 enters the regenerative drying roller 16 through the transition chamber 5 to heat and dry the regenerative materials, and the dried regenerative hot materials enter the two temporary regenerative hot material storage bins 17 through the regenerative material distributing mechanism 55 of the transition chamber 5 to be stored for later use; adding a regenerant into the two temporary storage bins 17 of the regenerated hot material through a regenerant adding device 19, wherein the regenerant permeates into the regenerated hot material from top to bottom; the method comprises the steps of respectively feeding all levels of primary hot materials in a primary hot material bin 8 into a primary material weighing hopper 9 through a primary material chute 10 for weighing, feeding the regenerated hot materials in a regenerated hot material temporary storage bin 17 into a regenerated material weighing hopper 18 for weighing, correspondingly feeding asphalt and mineral powder into an asphalt weighing cylinder 46 and a mineral powder weighing hopper 43 for weighing, respectively dropping the metered primary hot materials, regenerated hot materials, asphalt and mineral powder into a stirring cylinder 11, fully stirring and mixing all the materials through the stirring cylinder 11 to form a qualified regenerated asphalt mixture with strict gradation, and finally storing the qualified regenerated asphalt mixture in a finished product bin 12.
In this embodiment, when the cold supplement is needed, the cold supplement is also sent to the cold supplement temporary storage bin 24 for storage for later use; and (3) feeding the cold-patch materials in the cold-patch material temporary storage bin 24 into a cold-patch material metering hopper 25 for weighing and metering, and feeding the metered cold-patch materials into the stirring cylinder 11 through a cold-patch material belt conveyor 26 so as to be mixed with other materials.
In particular, the components and devices not described in detail in this embodiment are all existing mature products, such as a regenerant adding device, various belt conveyors, various elevators, various screw conveyors, various bins, various weighing hoppers, a bag-type dust remover, a humidifier, a stirring cylinder, etc., for example, the regenerant adding device includes a regenerant storage tank, a metering device and a conveying device, and the regenerant first quantitatively flows from the regenerant storage tank to the metering device, and then is conveyed to a regenerative hot material temporary storage bin by the conveying device (including a conveying pump and a conveying pipe).
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art should not depart from the technical solution of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. An asphalt mixture regeneration device is characterized in that: the device comprises a primary drying roller and a regenerative drying roller, wherein the primary drying roller and the regenerative drying roller are respectively obliquely installed on the upper part of a main building, a combustor shared with the regenerative drying roller is installed at the lower end of the primary drying roller, the higher end of the primary drying roller is opposite to the lower end of the regenerative drying roller, and a transition bin is connected between the primary drying roller and the regenerative drying roller, the lower part of the transition bin is provided with two discharge channels and a regenerative material distributing mechanism for controlling the two discharge channels to alternatively discharge, the middle part of the main building is provided with two regenerative thermal material temporary storage bins correspondingly communicated with the two discharge channels of the transition bin, the tops of the two regenerative thermal material temporary storage bins are jointly connected with a regenerative agent adding device, a regenerative material metering hopper is arranged below the two regenerative thermal material temporary storage bins, a stirring cylinder is arranged below the regenerative material metering hopper, a primary material chute is arranged above one side of the stirring cylinder, the top of former raw material chute is provided with native material weighing hopper, the top of former raw material weighing hopper is provided with native material hot bunker, the top of former raw material hot bunker is provided with native material shale shaker, the feed inlet of native material shale shaker is connected with native drying drum's lower end bottom discharge gate, the opposite side top of agitator tank is provided with pitch metering cylinder, powdered ore weighing hopper and sack cleaner, the below of agitator tank is provided with the finished product feed bin.
2. The asphalt mixture recycling plant according to claim 1, characterized in that: a row of powder partition plates distributed at intervals up and down are arranged in the transition bin, the powder partition plates are fixed in an inclined mode, a hot air inclined through hole is formed between every two adjacent powder partition plates, the lower end of each hot air inclined through hole faces to the primary drying roller, and the higher end of each hot air inclined through hole faces to the regenerative drying roller; a material sliding guide plate for guiding the primary material to enter the higher end of the primary drying roller is arranged in the transition bin; the lower part of transition bin is provided with the native middlings collection hopper body that is located the higher end below of native drying drum, the lower part of native middlings collection hopper body is provided with back powder screw conveyer, the powder outlet of returning powder screw conveyer is connected with the powder inlet of middlings recovery screw conveyer, the powder outlet of middlings recovery screw conveyer is linked together with the powder inlet of native material shale shaker.
3. The asphalt mixture recycling plant according to claim 1, characterized in that: the higher end of the regeneration drying roller is provided with a waste gas chamber, the upper part of the waste gas chamber is connected with a first induced draft smoke tube, the air outlet of the first induced draft smoke tube is connected with the air inlet of a first induced draft fan, and the air outlet of the first induced draft fan is connected with the air inlet of a bag-type dust collector; the bottom of the waste gas chamber is provided with a dust collecting hopper, a powder belt conveyor is arranged below a discharge hole of the dust collecting hopper, and a discharge end of the powder belt conveyor leads to one of the temporary storage bins for regenerated hot materials.
4. The asphalt mixture recycling plant according to claim 1, characterized in that: the upper part of the transition bin is connected with a second induced draft smoke tube, an air outlet of the second induced draft smoke tube is connected with an air inlet of a second induced draft fan, and an air outlet of the second induced draft fan is connected with an air inlet of the bag-type dust collector; the upper portion of the stirring cylinder is connected with a negative pressure bent pipe, the negative pressure bent pipe is in a shape like a Chinese character 'ji', and the other end of the negative pressure bent pipe is connected to an air inlet of the bag-type dust collector.
5. The asphalt mixture recycling plant according to claim 3, characterized in that: the upper portion of waste gas room is connected with first return air tobacco pipe, the air outlet of first return air tobacco pipe is connected with the air intake of third draught fan, the air outlet of third draught fan is connected with the air intake of second return air tobacco pipe, the air outlet of second return air tobacco pipe is connected and is led to the place ahead of combustor with the lower end of primary drying roller.
6. The asphalt mixture recycling plant according to claim 1, characterized in that: still include former raw feed arrangement, former raw feed arrangement includes native material feed bin, the primary band conveyer that gathers materials, former raw material lifting machine and upper portion band conveyer, native material feed bin sets up the bottom next door at the main building, the bottom of native material feed bin is provided with the primary belt conveyer that is joined in marriage to the primary material level, the discharge end that the primary belt conveyer was joined in marriage to the primary material level sets up in the feed end top of the primary band conveyer that gathers materials, the discharge end of the primary band conveyer that gathers materials sets up in the feed inlet top of former raw material lifting machine, the discharge gate of former raw material lifting machine sets up in the feed end top of upper portion band conveyer, the primary material import of transition bin is access to the discharge end of upper portion band conveyer, the higher end feed inlet of former drying cylinder is access to the primary material export of transition bin.
7. The asphalt mixture recycling plant according to claim 1, characterized in that: still include the regeneration material feeding device, the regeneration material feeding device includes regeneration material feed bin, regeneration aggregate band conveyer and regeneration material lifting machine, the regeneration material feed bin sets up the bottom next door at the main building, the bottom of regeneration material feed bin is provided with regeneration material gradation band conveyer, regeneration material gradation band conveyer's discharge end sets up in regeneration aggregate band conveyer's feed end top, regeneration aggregate band conveyer's discharge end sets up in regeneration material lifting machine's feed inlet top, regeneration material lifting machine's discharge gate accesss to regeneration drying drum's higher end feed inlet.
8. The asphalt mixture recycling plant according to claim 1, characterized in that: still include regeneration cold feed supplement feeding device, regeneration cold feed supplement feeding device includes cold feed supplement feed bin, cold feed supplement band conveyer and cold feed supplement lifting machine that gathers materials, cold feed supplement feed bin sets up the bottom next door at the main building, the bottom of cold feed supplement feed bin is provided with cold feed supplement gradation band conveyer, cold feed supplement gradation band conveyer's discharge end sets up in cold feed supplement gathering band conveyer's feed end top, cold feed supplement gathering band conveyer's discharge end sets up in the feed inlet top of cold feed supplement lifting machine, cold feed supplement lifting machine's discharge gate accesss to cold feed supplement temporary storage storehouse, the below in cold feed supplement temporary storage storehouse is provided with the cold feed supplement batch meter fill, the below of cold feed batch meter fill is provided with cold feed supplement band conveyer, the discharge end of cold feed supplement band conveyer accesss to the agitator.
9. The asphalt mixture recycling plant according to claim 1, characterized in that: also comprises a mineral powder supply device, the mineral powder supply device comprises a new powder tank, a recovered powder tank, a new powder screw conveyer, an old powder screw conveyer, a recovered powder lifter, a recovered powder temporary storage bin and a recovered powder screw conveyer, the powder outlet at the bottom of the new powder tank is connected with the powder inlet of the new powder screw conveyor, the powder outlet of the new powder screw conveyor is arranged above the powder inlet of the mineral powder weighing hopper, the powder outlet at the bottom of the powder recovery tank is connected with the powder inlet of the old powder screw conveyor, the powder outlet of the old powder screw conveyor is arranged above the powder inlet of the powder recovery lifting machine, the powder outlet of the recovered powder lifting machine is connected with the powder inlet of the recovered powder temporary storage bin, the powder outlet of the recovered powder temporary storage bin is connected with the powder inlet of the recovered powder spiral conveyor, and the powder outlet of the recovered powder spiral conveyor is arranged above the powder inlet of the mineral powder metering hopper.
10. The asphalt mixture recycling plant according to claim 9, characterized in that: the powder discharge port at the lower part of the powder recovery tank is connected with the feed port of the powder discharge screw conveyer, and the discharge port of the powder discharge screw conveyer is arranged above the powder inlet of the humidifier; the powder outlet of the bag-type dust collector is connected with the powder inlet of the old powder recovery screw conveyor, and the powder outlet of the old powder recovery screw conveyor is connected with the powder inlet of the powder recovery tank.
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| CN201921316563.6U CN210596912U (en) | 2019-08-14 | 2019-08-14 | Asphalt mixture regeneration equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921316563.6U CN210596912U (en) | 2019-08-14 | 2019-08-14 | Asphalt mixture regeneration equipment |
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| CN210596912U true CN210596912U (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344305A (en) * | 2019-08-14 | 2019-10-18 | 福建泉成机械有限公司 | A kind of asphalt regenerative device and method |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344305A (en) * | 2019-08-14 | 2019-10-18 | 福建泉成机械有限公司 | A kind of asphalt regenerative device and method |
| CN110344305B (en) * | 2019-08-14 | 2023-11-24 | 福建泉成机械有限公司 | Asphalt mixture regenerating equipment and method |
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