CN207878225U - A kind of anti-sticking drying drum of asphalt heat recycling aggregate - Google Patents
A kind of anti-sticking drying drum of asphalt heat recycling aggregate Download PDFInfo
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- CN207878225U CN207878225U CN201820244389.8U CN201820244389U CN207878225U CN 207878225 U CN207878225 U CN 207878225U CN 201820244389 U CN201820244389 U CN 201820244389U CN 207878225 U CN207878225 U CN 207878225U
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- Prior art keywords
- drying
- heat supply
- supply mechanism
- aggregate
- feeding conveyor
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Abstract
The utility model discloses a kind of anti-sticking drying drums of asphalt heat recycling aggregate, it includes feeding conveyor structure (1), heat supply mechanism (2), mixing mechanism (3), and feeding conveyor structure (1) and heat supply mechanism (2) are connected to mixing mechanism (3) respectively；Mixing mechanism (3) includes supporting rack (31), Drying (32), rotary electric machine (33), driving circle tooth (34), balance shaft (35), Drying (32) is installed in parallel on supporting rack (31), driving circle tooth (34) is connected on the middle part outer ring of Drying (32), the output end of rotary electric machine (33) is engaged with driving circle tooth (34), it is equidistant mounted on the both sides of Drying (32) to balance shaft (35), feeding conveyor structure (1) and heat supply mechanism (2) are connected to Drying (32) respectively, it can improve raw material availability, ensure that equipment runs well, save later stage disposal costs.
Description
Technical field
The utility model is related to asphalt waste reclaiming equipment technical fields, again more particularly to a kind of pitch heat
The anti-sticking drying drum of raw aggregate.
Background technology
With the development of China Higher grade highway, the bituminous paving being open to the traffic in early days has come into overhaul maintenance phase,
Thus milling goes out the recycling of a large amount of bituminous concrete and causes extensive concern.Asphalt concrete regenerating material can be saved greatly
The pitch and sandstone material of amount, cost saving, while being conducive to dispose waste material, saving energy consumption, environmental protection, have notable
Economic benefit and social benefit.In the prior art, waste asphalt concrete recycle is utilized and needs to pass through raw material through sieving
Choosing, heating, the multiple working procedures processing such as dry, then various additives are added in specific proportions, to achieve the purpose that recycling.
Current skeletal material drying device use common Drying, common Drying for process the materials such as powder be it is more suitable,
But when for the drying of waste asphalt concrete, since asphalt component is in molten form in the aggregate by heat treatment, and roll
Temperature is relatively low in cylinder, and asphalt aggregate is easy to stick together with inner wall of rotary drum, and roller is caused to block.
Utility model content
The purpose of this utility model is that：Waste asphalt concrete heat in order to solve the prior art regenerates process
In, asphalt aggregate is easy to stick on roller, and roller is caused to block, and cleaning is inconvenient, and the problem of waste material, the utility model
A kind of anti-sticking drying drum of asphalt heat recycling aggregate is provided.
The utility model specifically uses following technical scheme to achieve the goals above：
A kind of anti-sticking drying drum of asphalt heat recycling aggregate, including feeding conveyor structure, heat supply mechanism, mixing mechanism, institute
It states feeding conveyor structure and heat supply mechanism is connected to mixing mechanism respectively；
The mixing mechanism includes supporting rack, Drying, rotary electric machine, driving circle tooth, balance shaft, and the Drying is flat
Row is mounted on supporting rack, and driving circle tooth is connected on the middle part outer ring of Drying, the output end of the rotary electric machine and
Driving circle tooth engagement, the balance shaft are equidistant mounted on the both sides of Drying, the feeding conveyor structure and heat supply mechanism
It is connected to respectively with Drying.
Preferably, the Drying includes the front end cylinder interconnected and rear end cylinder, the front end cylinder it is upper
End is connected to by pipeline with feeding conveyor structure, and splicing scraper plate is evenly equipped on the inner wall circumference of the front end cylinder, described adjacent
It is provided with material channel between the root of two pieces of splicing scraper plates, flapper, the active catch are provided on the material channel
Plate is connect by hinge with the root of splicing scraper plate.
Preferably, being evenly equipped with stirring scratch board on the inner wall circumference of the rear end cylinder, the inside of the stirring scratch board is set
It is equipped with heating wire, accumulator is additionally provided in the shell of the rear end cylinder, the accumulator passes through connection with heating wire.
Preferably, the feeding conveyor structure includes hopper, spiral conveying groove, feeding motor, the hopper setting exists
The upper end of spiral conveying groove, the end of the spiral conveying groove are connected to the feed inlet of Drying, the output of the feeding motor
End is connect with spiral conveying groove.
Preferably, the heat supply mechanism includes burner and send hot chamber, the burner is by sending hot chamber and Drying
Feed inlet connection.
Preferably, further including waste gas circulation mechanism, the waste gas circulation mechanism connects with Drying and heat supply mechanism respectively
It is logical；The waste gas circulation mechanism includes gas exhausting valve, recycling circulation line, circulating fan, the gas exhausting valve and drying
The exhaust outlet connection of cylinder, the recycling circulation line are connected to gas exhausting valve and burner respectively, the circulating fan setting
On recycling circulation line.
The beneficial effects of the utility model are as follows：
1. the skeletal material drying device of the prior art uses common Drying, common Drying is for processing the materials such as powder
More suitable, but for waste asphalt concrete drying when, due to by heat treatment aggregate in asphalt component be in
Molten form, and temperature is relatively low in roller, and bitumen solidification, such asphalt aggregate can be caused to be easy to occur with inner wall of rotary drum viscous
Even, roller is caused to block.For this problem, the present apparatus devises heat supply mechanism, using the heat of itself, to ensure Drying
Interior temperature makes it be dried with the solid integrated overturning in aggregate, it is avoided to adhere to drying drum to prevent bitumen solidification
Inner wall improves the stability of asphalt heat recycling aggregate recycling processing, further improves the utilization ratio of aggregate, saves energy
Source has ensured the normal operation of equipment.When the present apparatus works, by a certain percentage by new aggregate and waste and old recycling aggregate, it is added to
The feeding conveyor structure of the present apparatus, carries out preliminary mixing in feeding conveyor structure, then be fed in Drying into
Row further scrolls through drying, and when rolling drying, heat supply mechanism is according to the temperature change in Drying, when the relatively low presence of aggregate temperature
When the omen of bitumen solidification, heat supplement is carried out in time, ensures the standing state of pitch, it is avoided to stick together with inner wall, carry
The high utilization rate of raw material, has ensured the normal operation of equipment, has saved later stage disposal costs.
2. traditional Drying material enters inner barrel and is disposably directly entered, admission velocity and supply
It can not effectively control, be not easy to be uniformly mixed when rotating mixing, for this problem, the present apparatus has been made on Drying into one
Step is improved, when mixed material enters the present apparatus, since flapper is to make material channel be in open under the effect of gravity
State, material will be entered by material channel in Drying, this inlet is to step into, and effectively prevent having no
The disposable feed of restraining, keeps material stirring more uniform, and when Drying rotates, the flapper in lower end can be in gravity
Effect is lower to close material channel, and the center that material is in Drying always is made to carry out stirring stirring, so round-trip, and material is made to mix
More uniformly.
3. when Drying length is long, due to heat loss, it is relatively low to have a temperature, leads for the distal barrel end of heat supply mechanism
The case where causing aggregate adhesion, for this problem, the present apparatus is in rear end barrel designs heating device, in stirring scratch board and material
When contact, heating and thermal insulation is carried out to aggregate using heating wire, set temperature range is at, aggregate is avoided to cool down adhesion.
4. asphalt heat recycling aggregate, in drying, the aggregate of heating has bitumen flue gas discharge, environment is polluted, for this
Problem, the present apparatus devise waste gas circulation mechanism, and the heavier tail gas containing flue gas is re-delivered to burning using gas exhausting valve
Second-time burning is carried out in device, so that bitumen flue gas burning is converted into heat, is improved the environmental-protecting performance of the present apparatus.Meanwhile crying out flue gas
Exhaust gas there is also certain heat, can also utilize heat again after so that it is recycled, raising energy utilization rate.
Description of the drawings
Fig. 1 is the overall structure figure of the present apparatus；
Fig. 2 is front end cylinder sectional schematic diagram；
Fig. 3 is the partial enlarged view of front end cylinder；
Fig. 4 is flapper operating diagram；
Fig. 5 is the sectional schematic diagram of rear end cylinder；
Fig. 6 is the partial enlarged view of rear end cylinder；
Reference numeral：1- feeding conveyor structures, 11- hoppers, 12- spiral conveying grooves, 13- feeding motors, 2- heat supplies mechanism,
21- burners, 22- send hot chamber, 3- mixing mechanisms, 31- supporting racks, 32- Dryings, the front ends 321- cylinder, the rear ends 322- cylinder,
33- rotary electric machines, 34- driving circle teeth, 35- balance shafts, 4- splicing scraper plates, 5- material channels, 6- flappers, 7- stirrings are scraped
Plate, 8- heating wire, 9- accumulators, 10- waste gas circulations mechanism, 101- gas exhausting valves, 102- recycle circulation line, 103- cycles
Wind turbine.
Specific implementation mode
In order to which those skilled in the art are better understood from the utility model, below in conjunction with the accompanying drawings with following embodiment to this
Utility model is described in further detail.
Embodiment 1
As shown, the present embodiment provides a kind of anti-sticking drying drum of asphalt heat recycling aggregate, including feeding conveyor structure
1, heat supply mechanism 2, mixing mechanism 3, the feeding conveyor structure 1 and heat supply mechanism 2 are connected to mixing mechanism 3 respectively；
The mixing mechanism 3 includes supporting rack 31, Drying 32, rotary electric machine 33, driving circle tooth 34, balances shaft 35,
The Drying 32 is installed in parallel on supporting rack 31, and the driving circle tooth 34 is connected on the middle part outer ring of Drying 32, institute
The output end for stating rotary electric machine 33 is engaged with driving circle tooth 34, and the balance shaft 35 is equidistant mounted on the two of Drying 32
Side, the feeding conveyor structure 1 and heat supply mechanism 2 are connected to Drying 32 respectively.
The operation principle of the present embodiment is as follows：The skeletal material drying device of the prior art uses common Drying 32, commonly
Drying 32 is for process the materials such as powder to be more suitable, but when for the drying of waste asphalt concrete, due to by plus
Asphalt component is in molten form in the aggregate of heat treatment, and temperature is relatively low in roller, can lead to bitumen solidification, drip in this way
Green aggregate is easy to stick together with inner wall of rotary drum, and roller is caused to block.For this problem, the present apparatus devises heat supply mechanism 2,
Using the heat of itself, to ensure the temperature in Drying 32, to prevent bitumen solidification, make itself and the solid one in aggregate
Overturning drying, avoids it from adhering to drying drum inner wall, improves the stability of asphalt heat recycling aggregate recycling processing, further
The utilization ratio of aggregate is improved, it is energy saving, ensure the normal operation of equipment.When the present apparatus works, by new aggregate and give up
Old recycling aggregate by a certain percentage, is added to the feeding conveyor structure 1 of the present apparatus, is carried out tentatively in feeding conveyor structure 1
It is mixed, then is fed in Drying 32 and further scrolls through drying, when rolling drying, heat supply mechanism 2 is according to drying
Temperature change in cylinder 32, when aggregate temperature is relatively low, there are when the omen of bitumen solidification, carry out heat supplement, guarantee pitch in time
Standing state, avoid it from sticking together with inner wall, improve the utilization rate of raw material, ensured the normal operation of equipment, save
Later stage disposal costs.
Embodiment 2
The present embodiment has made following optimization on the basis of embodiment 1：As shown, the present embodiment provides a kind of pitch heat
The anti-sticking drying drum of recycled aggregate, including feeding conveyor structure 1, heat supply mechanism 2, mixing mechanism 3, the feeding conveyor structure 1
It is connected to respectively with mixing mechanism 3 with heat supply mechanism 2；
The mixing mechanism 3 includes supporting rack 31, Drying 32, rotary electric machine 33, driving circle tooth 34, balances shaft 35,
The Drying 32 is installed in parallel on supporting rack 31, and the driving circle tooth 34 is connected on the middle part outer ring of Drying 32, institute
The output end for stating rotary electric machine 33 is engaged with driving circle tooth 34, and the balance shaft 35 is equidistant mounted on the two of Drying 32
Side, the feeding conveyor structure 1 and heat supply mechanism 2 are connected to Drying 32 respectively.
The Drying 32 includes the front end cylinder 321 interconnected and rear end cylinder 322, the front end cylinder 321
Upper end is connected to by pipeline with feeding conveyor structure 1, and splicing scraper plate 4, institute are evenly equipped on the inner wall circumference of the front end cylinder 321
It states and is provided with material channel 5 between the root of adjacent two pieces of splicing scraper plates 4, flapper 6 is provided on the material channel 5,
The flapper 6 is connect by hinge with the root of splicing scraper plate 4.
The operation principle of the present embodiment is as follows：Traditional 32 material of Drying enter inner barrel be it is disposable directly into
Entering, admission velocity and supply can not be controlled effectively, be not easy to be uniformly mixed rotating the when of mixing, for this problem,
The present apparatus is further improved on Drying 32, when mixed material enters the present apparatus, since flapper 6 is in gravity
Make material channel 5 in the open state under effect, material will be entered by material channel 5 in Drying 32, this
Inlet is to step into, and effectively prevents the immoderate disposable feed of milli, keeps material stirring more uniform, when Drying 32
When rotation, the flapper 6 in lower end can close material channel 5 under the effect of gravity, and material is made to be in Drying 32 always
Center carry out stirring stirring, it is so round-trip, keep material mixing more uniform.
Embodiment 3
The present embodiment has made following optimization on the basis of embodiment 2：As shown, the present embodiment provides a kind of pitch heat
The anti-sticking drying drum of recycled aggregate, including feeding conveyor structure 1, heat supply mechanism 2, mixing mechanism 3, the feeding conveyor structure 1
It is connected to respectively with mixing mechanism 3 with heat supply mechanism 2；
The mixing mechanism 3 includes supporting rack 31, Drying 32, rotary electric machine 33, driving circle tooth 34, balances shaft 35,
The Drying 32 is installed in parallel on supporting rack 31, and the driving circle tooth 34 is connected on the middle part outer ring of Drying 32, institute
The output end for stating rotary electric machine 33 is engaged with driving circle tooth 34, and the balance shaft 35 is equidistant mounted on the two of Drying 32
Side, the feeding conveyor structure 1 and heat supply mechanism 2 are connected to Drying 32 respectively.
Stirring scratch board 7 is evenly equipped on the inner wall circumference of the rear end cylinder 322, the stirring scratch board 7 is internally provided with
Heating wire 8 is additionally provided with accumulator 9 in the shell of the rear end cylinder 322, and the accumulator 9 is connected with heating wire 8 by circuit
It connects.
The operation principle of the present embodiment is as follows：When 32 length of Drying is long, the distal barrel end of heat supply mechanism 2 is due to heat
Amount is scattered and disappeared, and it is relatively low to have a temperature, the case where leading to aggregate adhesion, and for this problem, the present apparatus is designed in rear end cylinder 322
Heating device carries out heating and thermal insulation to aggregate using heating wire 8, is at setting when stirring scratch board 7 and material are contacted
Temperature range avoids aggregate from cooling down adhesion.
Embodiment 4
The present embodiment has made following optimization on the basis of embodiment 1：As shown, the present embodiment provides a kind of pitch heat
The anti-sticking drying drum of recycled aggregate, including feeding conveyor structure 1, heat supply mechanism 2, mixing mechanism 3, the feeding conveyor structure 1
It is connected to respectively with mixing mechanism 3 with heat supply mechanism 2；
The mixing mechanism 3 includes supporting rack 31, Drying 32, rotary electric machine 33, driving circle tooth 34, balances shaft 35,
The Drying 32 is installed in parallel on supporting rack 31, and the driving circle tooth 34 is connected on the middle part outer ring of Drying 32, institute
The output end for stating rotary electric machine 33 is engaged with driving circle tooth 34, and the balance shaft 35 is equidistant mounted on the two of Drying 32
Side, the feeding conveyor structure 1 and heat supply mechanism 2 are connected to Drying 32 respectively.
The feeding conveyor structure 1 includes hopper 11, spiral conveying groove 12, feeding motor 13, and the setting of the hopper 11 exists
The end of the upper end of spiral conveying groove 12, the spiral conveying groove 12 is connected to the feed inlet of Drying 32, the feeding motor
13 output end is connect with spiral conveying groove 12.
Embodiment 5
The present embodiment has made following optimization on the basis of embodiment 1：As shown, the present embodiment provides a kind of pitch heat
The anti-sticking drying drum of recycled aggregate, including feeding conveyor structure 1, heat supply mechanism 2, mixing mechanism 3, the feeding conveyor structure 1
It is connected to respectively with mixing mechanism 3 with heat supply mechanism 2；
The mixing mechanism 3 includes supporting rack 31, Drying 32, rotary electric machine 33, driving circle tooth 34, balances shaft 35,
The Drying 32 is installed in parallel on supporting rack 31, and the driving circle tooth 34 is connected on the middle part outer ring of Drying 32, institute
The output end for stating rotary electric machine 33 is engaged with driving circle tooth 34, and the balance shaft 35 is equidistant mounted on the two of Drying 32
Side, the feeding conveyor structure 1 and heat supply mechanism 2 are connected to Drying 32 respectively.
The heat supply mechanism 2 includes burner 21 and send hot chamber 22, and the burner 21 is by sending hot chamber 22 and Drying
32 feed inlet connection.
Embodiment 6
The present embodiment has made following optimization on the basis of embodiment 5：As shown, the present embodiment provides a kind of pitch heat
The anti-sticking drying drum of recycled aggregate, including feeding conveyor structure 1, heat supply mechanism 2, mixing mechanism 3, the feeding conveyor structure 1
It is connected to respectively with mixing mechanism 3 with heat supply mechanism 2；
The mixing mechanism 3 includes supporting rack 31, Drying 32, rotary electric machine 33, driving circle tooth 34, balances shaft 35,
The Drying 32 is installed in parallel on supporting rack 31, and the driving circle tooth 34 is connected on the middle part outer ring of Drying 32, institute
The output end for stating rotary electric machine 33 is engaged with driving circle tooth 34, and the balance shaft 35 is equidistant mounted on the two of Drying 32
Side, the feeding conveyor structure 1 and heat supply mechanism 2 are connected to Drying 32 respectively.
The heat supply mechanism 2 includes burner 21 and send hot chamber 22, and the burner 21 is by sending hot chamber 22 and Drying
32 feed inlet connection.
Further include waste gas circulation mechanism 10, the waste gas circulation mechanism 10 is connected to Drying 32 and heat supply mechanism 2 respectively；
The waste gas circulation mechanism 10 includes gas exhausting valve 101, recycling circulation line 102, circulating fan 103, the gas exhaust inspecting
Valve 101 is connect with the exhaust outlet of Drying 32, the recycling circulation line 102 respectively with gas exhausting valve 101 and burner 21
Connection, the setting of the circulating fan 103 is on recycling circulation line 102.
The operation principle of the present embodiment is as follows：For asphalt heat recycling aggregate in drying, the aggregate of heating has bitumen flue gas
Environment is polluted in discharge, and for this problem, the present apparatus devises waste gas circulation mechanism 10, will contain cigarette using gas exhausting valve 101
The heavier tail gas of gas, which is re-delivered in burner 21, carries out second-time burning, so that bitumen flue gas burning is converted into heat, improves
The environmental-protecting performance of the present apparatus.Meanwhile crying out the exhaust gas of flue gas there is also certain heat, heat can also be utilized again after so that it is recycled,
Improve energy utilization rate.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, equivalent structure made by every description with the utility model becomes
Change, similarly should be included in the scope of protection of the utility model.
Claims (6)
1. a kind of anti-sticking drying drum of asphalt heat recycling aggregate, it is characterised in that：Including feeding conveyor structure (1), heat supply mechanism
(2), mixing mechanism (3), the feeding conveyor structure (1) and heat supply mechanism (2) are connected to mixing mechanism (3) respectively；
The mixing mechanism (3) includes supporting rack (31), Drying (32), rotary electric machine (33), driving circle tooth (34), balance turn
Axis (35), the Drying (32) are installed in parallel on supporting rack (31), and the driving circle tooth (34) is connected to Drying (32)
Middle part outer ring on, the output end of the rotary electric machine (33) and driving circle tooth (34) engages, and the balance shaft (35) is equidistantly
From the both sides mounted on Drying (32), the feeding conveyor structure (1) and heat supply mechanism (2) connect with Drying (32) respectively
It is logical.
2. the anti-sticking drying drum of asphalt heat recycling aggregate as described in claim 1, it is characterised in that：Drying (32) packet
Include the front end cylinder (321) interconnected and rear end cylinder (322), the upper end of the front end cylinder (321) by pipeline with into
Material conveyer structure (1) is connected to, and is evenly equipped with splicing scraper plate (4) on the inner wall circumference of the front end cylinder (321), described adjacent two pieces
It is provided with material channel (5) between the root of splicing scraper plate (4), flapper (6), institute are provided on the material channel (5)
Flapper (6) is stated to connect with the root of splicing scraper plate (4) by hinge.
3. the anti-sticking drying drum of asphalt heat recycling aggregate as claimed in claim 2, it is characterised in that：The rear end cylinder
(322) it is evenly equipped with stirring scratch board (7) on inner wall circumference, the stirring scratch board (7) is internally provided with heating wire (8), described
Accumulator (9) is additionally provided in the shell of rear end cylinder (322), the accumulator (9) passes through connection with heating wire (8).
4. the anti-sticking drying drum of asphalt heat recycling aggregate as described in claim 1, it is characterised in that：The feeding conveyor structure
(1) include hopper (11), spiral conveying groove (12), feeding motor (13), hopper (11) setting is in spiral conveying groove (12)
Upper end, the end of the spiral conveying groove (12) is connected to the feed inlet of Drying (32), the feeding motor (13) it is defeated
Outlet is connect with spiral conveying groove (12).
5. the anti-sticking drying drum of asphalt heat recycling aggregate as described in claim 1, it is characterised in that：The heat supply mechanism (2)
Including burner (21) and hot chamber (22) is sent, the burner (21) is by sending hot chamber (22) and the feed inlet of Drying (32) to connect
It is logical.
6. the anti-sticking drying drum of asphalt heat recycling aggregate as claimed in claim 5, it is characterised in that：It further include waste gas circulation machine
Structure (10), the waste gas circulation mechanism (10) are connected to Drying (32) and heat supply mechanism (2) respectively；
The waste gas circulation mechanism (10) includes gas exhausting valve (101), recycles circulation line (102), circulating fan (103),
The gas exhausting valve (101) connect with the exhaust outlet of Drying (32), and the recycling circulation line (102) controls with exhaust respectively
Valve (101) processed is connected to burner (21), and circulating fan (103) setting is on recycling circulation line (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244389.8U CN207878225U (en) | 2018-02-11 | 2018-02-11 | A kind of anti-sticking drying drum of asphalt heat recycling aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244389.8U CN207878225U (en) | 2018-02-11 | 2018-02-11 | A kind of anti-sticking drying drum of asphalt heat recycling aggregate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207878225U true CN207878225U (en) | 2018-09-18 |
Family
ID=63497915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820244389.8U Expired - Fee Related CN207878225U (en) | 2018-02-11 | 2018-02-11 | A kind of anti-sticking drying drum of asphalt heat recycling aggregate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207878225U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485478A (en) * | 2020-04-15 | 2020-08-04 | 丽水市莲都区万青五金厂 | Movable asphalt drying device for road paving |
| CN112030668A (en) * | 2020-08-28 | 2020-12-04 | 无锡泰特筑路机械有限公司 | Heat energy recycling device of asphalt mixing plant |
| CN115748371A (en) * | 2022-12-07 | 2023-03-07 | 罗冬成 | Highway waste asphalt recycling device and working method thereof |
-
2018
- 2018-02-11 CN CN201820244389.8U patent/CN207878225U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485478A (en) * | 2020-04-15 | 2020-08-04 | 丽水市莲都区万青五金厂 | Movable asphalt drying device for road paving |
| CN112030668A (en) * | 2020-08-28 | 2020-12-04 | 无锡泰特筑路机械有限公司 | Heat energy recycling device of asphalt mixing plant |
| CN115748371A (en) * | 2022-12-07 | 2023-03-07 | 罗冬成 | Highway waste asphalt recycling device and working method thereof |
| CN115748371B (en) * | 2022-12-07 | 2023-10-10 | 罗冬成 | Highway waste asphalt recycling device and working method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 Termination date: 20220211 |