CN214882743U

CN214882743U - Asphalt mixing production system

Info

Publication number: CN214882743U
Application number: CN202120175939.7U
Authority: CN
Inventors: 时兆武
Original assignee: Shanghai Shishen Industry and Trade Co Ltd
Current assignee: Shanghai Shishen Industry and Trade Co Ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-11-26
Anticipated expiration: 2031-01-21
Also published as: DE202021103907U1; JP3234411U; KR20220001865U; KR200496465Y1

Abstract

The application relates to the technical field of asphalt concrete processing, in particular to an asphalt mixing production system, which comprises a heating mechanism, an aggregate storage mechanism, a reclaimed material storage mechanism, a powder storage mechanism, an asphalt storage mechanism, a stirring mechanism, a dust removal mechanism and a waste gas treatment mechanism; the stirring mechanism is sequentially provided with a variable-frequency stirring cylinder, a forced stirring cylinder and a finished product storage bin along the conveying direction, the variable-frequency stirring cylinder is respectively communicated with the aggregate storage mechanism, the reclaimed material storage mechanism, the powder storage mechanism and the asphalt storage mechanism, and finished products in the finished product storage bin are discharged into a finished product conveying vehicle for feeding. The application has the advantage of improving the production efficiency on the premise of not influencing the quality of finished products.

Description

Asphalt mixing production system

Technical Field

The application relates to the technical field of asphalt concrete processing, in particular to an asphalt mixing production system.

Background

The asphalt concrete is commonly called as asphalt concrete, and is a mixture prepared by manually selecting mineral aggregate with a certain gradation composition, broken stone or crushed gravel, stone chips or sand, mineral powder and the like, and mixing the mineral aggregate, the broken stone or crushed gravel, the stone chips or sand, the mineral powder and a certain proportion of road asphalt material under strictly controlled conditions. The asphalt concrete pavement has good driving comfort and excellent performance, and has the advantages of high construction speed, low maintenance cost and the like, and is widely used. The hot-mixed asphalt mixture is the main method for constructing the current asphalt concrete pavement.

In the correlation technique, the factory building that the pitch mix production used sets up to five layers, and natural aggregate and recycled aggregate promote to the fifth layer through the lifting machine after the first layer is heated and is dried, and natural aggregate gets into the aggregate after the screening processing at fifth layer factory building and stores the storehouse and store, and recycled aggregate gets into the recycled material and stores the storehouse and store, and simultaneously, the fifth layer factory building still is equipped with the powder and stores storehouse and pitch storage storehouse. When the aggregate, the reclaimed material, the powder and the asphalt are used, the aggregate, the reclaimed material, the powder and the asphalt are weighed by the metering bin, then the aggregate, the reclaimed material, the powder and the asphalt are discharged to a pre-storage bin corresponding to a fourth layer of factory building for preparation, then the aggregate, the reclaimed material, the powder and the asphalt are discharged to a continuous stirring cylinder of a third layer of factory building for stirring to obtain a premix, the premix is stored in the pre-stirring storage bin, after the pre-stirring is completed, the premix enters a forced stirring cylinder of a second layer of factory building for forced stirring, the finished product material after the stirring is completed is stored in a finished product storage bin, the first layer of the factory building is set as a finished product loading area, and during the loading, the finished product material in the finished product storage bin is unloaded to a finished product material conveying vehicle parked in the first layer of factory building for feeding.

Aiming at the related technologies, in the asphalt mixing production process, the production flow is complicated, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the production efficiency of pitch mix production under the prerequisite that does not influence finished product material quality, this application provides a pitch mix production system.

The application provides a pair of pitch mix production system adopts following technical scheme:

a system for producing asphalt mixture comprises a heating mechanism, an aggregate storage mechanism, a reclaimed material storage mechanism, a powder storage mechanism, an asphalt storage mechanism, a stirring mechanism, a dust removal mechanism and a waste gas treatment mechanism;

the stirring mechanism is sequentially provided with a variable frequency stirring cylinder, a forced stirring cylinder and a finished product storage bin along the conveying direction, the variable frequency stirring cylinder is respectively communicated with the aggregate storage mechanism, the reclaimed material storage mechanism, the powder storage mechanism and the asphalt storage mechanism, and the finished product material in the finished product storage bin is discharged into a finished product material conveying vehicle for feeding.

Through adopting above-mentioned technical scheme, with the frequency conversion agitator tank, force agitator tank and finished product storage storehouse setting at same layer factory building, replace original continuous agitator tank through using the frequency conversion agitator tank, the unloading is unified the unloading by the continuous unloading of high-speed stirring more changes into the low-speed stirring, under the prerequisite that has better stirring effect, save the step of storing the storehouse in advance and prestoring the raw materials in advance stirring, the raw materials after the preliminary stirring directly gets into and forces the agitator tank stirring, thereby the production flow has been simplified, the production efficiency is improved, the factory building height has been reduced simultaneously, and the cost is reduced.

Preferably, the aggregate storage mechanism is provided with an aggregate elevator, an aggregate screening machine, an aggregate storage bin and an aggregate metering bin in sequence along the conveying direction, the aggregate elevator is communicated with the heating mechanism, and the aggregate metering bin is communicated with the variable-frequency stirring cylinder.

Through adopting above-mentioned technical scheme, with the direct and frequency conversion agitator intercommunication of aggregate measurement storehouse, the aggregate after weighing is direct stirs in advance in the frequency conversion agitator, has saved the step that the aggregate was prepared material in prestoring the storehouse, has simplified production flow, has improved production efficiency, has reduced the factory building height, reduce cost.

Preferably, the reclaimed material storage mechanism is provided with a reclaimed material hoister, a reclaimed material storage bin and a reclaimed material metering bin in sequence along the conveying direction, the reclaimed material hoister is communicated with the heating mechanism, and the reclaimed material metering bin is communicated with the variable-frequency stirring cylinder.

Through adopting above-mentioned technical scheme, with the discharge end and the frequency conversion agitator intercommunication in reclaimed material measurement storehouse, the direct unloading of reclaimed material after weighing stirs in advance to the frequency conversion agitator, has saved the step that the reclaimed material was prepared material in the storehouse of prestoring, has simplified production flow, has improved production efficiency, helps reducing the height of factory building, reduce cost.

Preferably, the powder storage mechanism is sequentially provided with a powder storage bin and a powder metering bin along the conveying direction, the powder storage bin is communicated with the dust removal mechanism, and the powder metering bin is communicated with the variable-frequency stirring cylinder.

Through adopting above-mentioned technical scheme, the powder unloading in the storehouse is stored to the powder after weighing in the powder measurement storehouse, and direct ejection of compact has saved the step of prepareeing material in the storehouse of prestoring to the frequency conversion agitator cylinder, has shortened production procedure, has improved production efficiency, and simultaneously, the space that will set up the storehouse of prestoring is saved, helps reducing the factory building area, reduce cost.

Preferably, the asphalt storage mechanism is provided with an asphalt storage bin and an asphalt metering bin in sequence along the conveying direction, and the asphalt metering bin is communicated with the variable-frequency stirring cylinder.

Through adopting above-mentioned technical scheme, the pitch of storing in the pitch storage storehouse is through pitch measurement storehouse back, directly gets into in the frequency conversion agitator tank and carries out the preliminary mixing together with other raw materialss, has saved the step of prepareeing material in the storehouse of prestoring, has simplified the production flow of pitch mix production, has improved production efficiency, helps saving space simultaneously, reduces the factory building height, reduce cost.

Preferably, heating mechanism includes a stoving section of thick bamboo, stoving bobbin top is provided with first inlet pipe, stoving bobbin base portion is provided with first discharging pipe and combustor, first discharging pipe and aggregate lifting machine intercommunication, the air intake and the air intercommunication of combustor, the output and the stoving section of thick bamboo intercommunication of combustor.

Through adopting above-mentioned technical scheme, cold aggregate gets into a stoving section of thick bamboo from first inlet pipe in, through combustor heating stoving, and the back that finishes of heating, hot aggregate promotes from first discharging pipe entering aggregate lifting machine in and stores. In the heating process of the burner, air introduced from the air inlet of the burner plays a role in supporting combustion, so that the heating efficiency is improved.

Preferably, the drying cylinder is a double-layer cylinder, a second feeding pipe and a second discharging pipe are arranged on an outer cylinder of the drying cylinder, and the second discharging pipe is communicated with the reclaimed material hoister.

By adopting the technical scheme, because the reclaimed materials contain waste asphalt, a large amount of asphalt smoke can be generated by directly heating the asphalt by open fire, the physical health of workers is harmed, and meanwhile, air is polluted. Through setting up the section of thick bamboo of drying into the bilayer, use the urceolus to carry out the interval heating to the reclaimed materials, avoided naked light and reclaimed materials's direct contact to reduce the production of pitch flue gas, guaranteed that staff's is healthy, and be favorable to the environmental protection.

Preferably, the dust removal mechanism comprises a bag-type dust remover, a dust outlet of the bag-type dust remover is communicated with the powder storage bin, and a gas outlet of the bag-type dust remover is communicated with the waste gas treatment mechanism.

By adopting the technical scheme, the bag-type dust collector filters absorbed dust gas, and the filtered dust enters the powder storage bin for storage, so that the cyclic utilization of the powder is facilitated, the cost is saved, the situation that harm is brought to the health of workers due to the fact that a large amount of dust exists in a factory building is reduced, and the environment is protected.

Preferably, the waste gas treatment mechanism comprises a waste gas treatment tower, the gas inlet end of the waste gas treatment tower is communicated with the gas outlet of the bag-type dust collector, and the gas outlet end of the waste gas treatment tower is communicated with the air.

Through adopting above-mentioned technical scheme, the exhaust-gas treatment tower discharges after handling waste gas, makes waste gas accord with emission standard, is favorable to the environmental protection.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the method, the variable-frequency stirring cylinder is used for replacing a continuous stirring cylinder, high-speed stirring continuous blanking is changed into low-speed stirring unified blanking, the process that the raw materials after pre-stirring are stored in a pre-stirring storage bin is omitted while the quality of pre-stirring is guaranteed, the raw materials after pre-stirring are directly blanked into a forced stirring cylinder to be forcibly stirred, the process of an asphalt mixing production system is simplified, the production efficiency is improved, the space for arranging the pre-stirring storage bin is saved, the area of a plant is favorably reduced, the height of the plant is reduced, and the cost is saved;

2. according to the method, the raw material pre-storage bin is omitted, the step that the raw materials enter the stirring mechanism to be stirred is shortened, the production efficiency is improved, meanwhile, the space for arranging the raw material pre-storage bin is saved, the height of a workshop is reduced, and the cost is saved;

3. this application sets up to the bilayer through drying a section of thick bamboo, has avoided the asphalt raw materials in the recycled aggregate and the direct contact of naked light, has reduced the production of pitch flue gas, is favorable to the environmental protection and guarantees that the staff is healthy.

Drawings

FIG. 1 is a block diagram showing the construction of an asphalt mixing production system in example 1 of the present application;

FIG. 2 is a schematic view showing the overall structure of a filter device according to an embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a block diagram of the asphalt mixing production system in embodiment 2 of the present application.

Reference numerals: 1. a heating mechanism; 101. a first feed tube; 102. a first discharge pipe; 103. a burner; 104. a second feed tube; 105. a second discharge pipe; 2. an aggregate storage mechanism; 3. a reclaimed material storage mechanism; 4. a powder storage mechanism; 5. an asphalt storage mechanism; 6. a stirring mechanism; 7. a dust removal mechanism; 8. an exhaust gas treatment mechanism; 9. a filter box; 10. an air inlet pipe; 11. an air outlet pipe; 12. a screen box; 13. a box cover; 14. a fixing plate; 15. buckling the plate; 16. a clamping hole; 17. a clamping block; 18. and (4) screening holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses pitch mix production system.

Example 1

Referring to fig. 1, the asphalt mixing production system includes a heating mechanism 1, an aggregate storage mechanism 2, a reclaimed material storage mechanism 3, a powder storage mechanism 4, an asphalt storage mechanism 5, a stirring mechanism 6, a dust removal mechanism 7, and a waste gas treatment mechanism 8. Asphalt mixing factory building sets up to the three-layer, and the first layer is the finished product charging area, and heating mechanism 1 sets up at the first layer, and mechanism 2 is stored to the aggregate, mechanism 3 is stored to the reclaimed material, powder store mechanism 4, pitch store mechanism 5 all set up at the third floor factory building, and rabbling mechanism 6 sets up at the second floor factory building, and dust removal mechanism 7 and exhaust-gas treatment mechanism 8 set up outside the factory building.

Referring to fig. 1, the heating mechanism 1 includes a drying drum, the drying drum is a double-layer drum, a first feeding pipe 101 is arranged at the top of the drying drum, and a first discharging pipe 102 and a burner 103 are arranged at the bottom of the drying drum. The first tapping pipe 102 communicates with the aggregate storage means 2. The air inlet of the burner 103 is communicated with the outside air, and the output end of the burner 103 is communicated with the drying cylinder. The outer cylinder of the drying cylinder is communicated with a second feeding pipe 104 and a second discharging pipe 105, and the second discharging pipe 105 is communicated with the reclaimed material storage mechanism 3. The natural aggregate enters a drying cylinder through a first feeding pipe 101 for heating and drying, and enters an aggregate storage mechanism 2 from a first discharging pipe 102 for storage after heating; the recycled aggregate enters the outer layer of the drying cylinder through the second feeding hole to be heated and dried, and enters the recycled material storage mechanism 3 from the second discharging hole to be stored for later use after the heating is finished.

Referring to fig. 1, the aggregate storage mechanism 2 is sequentially provided with an aggregate lifter, an aggregate screening machine, an aggregate storage bin and an aggregate metering bin in a communicating manner along a conveying direction. The feed end and the first discharging pipe 102 intercommunication of aggregate lifting machine, the discharge end and the feed end intercommunication of aggregate screening machine of aggregate lifting machine, the discharge end of aggregate screening machine and the feed end intercommunication of storehouse is stored to the aggregate, the discharge end that the storehouse was stored to the aggregate communicates with the feed end of aggregate measurement storehouse, the discharge end and the rabbling mechanism 6 intercommunication in aggregate measurement storehouse. The aggregate hoister is a vertical material hoister, the aggregate screening machine is a vibrating screening machine, the aggregate storage bin is a heat-insulating steel plate bin, and the aggregate metering bin is an electronic metering bin.

Referring to fig. 1, the reclaimed material storage mechanism 3 is provided with a reclaimed material elevator, a reclaimed material storage bin and a reclaimed material metering bin in sequence along the conveying direction. The feed end and the second discharging pipe 105 intercommunication of reclaimed material lifting machine, the discharge end of reclaimed material lifting machine and the feed end intercommunication of storehouse is stored to the reclaimed material, and the discharge end of storehouse and the feed end intercommunication of reclaimed material measuring bin are stored to the reclaimed material, and the discharge end and the rabbling mechanism 6 intercommunication of reclaimed material measuring bin. The reclaimed material hoister is a vertical material hoister, the reclaimed material storage bin is a heat-preservation steel plate bin, and the reclaimed material metering bin is an electronic metering bin.

Referring to fig. 1, the powder storage mechanism 4 is provided with a powder storage bin and a powder metering bin in sequence along the feeding direction. The feed end and the dust removal mechanism 7 intercommunication in storehouse are stored to the powder, and the discharge end and the feed end intercommunication in powder measurement storehouse are stored to the powder, and the discharge end and the rabbling mechanism 6 intercommunication in powder measurement storehouse. The powder storage bin is a heat-preservation steel plate bin, and the powder metering bin is an electronic metering bin.

Referring to fig. 1, the asphalt storage mechanism 5 is provided with an asphalt storage bin and an asphalt metering bin in sequence along a feeding direction. The discharge end of the asphalt storage bin is communicated with the feed end of the asphalt metering bin, and the discharge end of the asphalt metering bin is communicated with the stirring mechanism 6. The asphalt storage bin is a heat-preservation steel plate bin, and the asphalt metering bin is an electronic metering bin.

Referring to fig. 1, the stirring mechanism 6 is provided with a variable frequency stirring cylinder, a forced stirring cylinder and a finished product storage bin in sequence along the conveying direction. The feeding end of the variable-frequency stirring cylinder is respectively communicated with the aggregate metering bin, the reclaimed material metering bin, the powder metering bin and the asphalt metering bin, the discharging end of the variable-frequency stirring cylinder is communicated with the feeding end of the forced stirring cylinder, and the discharging end of the forced stirring cylinder is communicated with the feeding end of the finished product storage bin. When the finished product materials need to be transported, the finished product materials stored in the finished product storage bin are discharged into a finished product material conveying vehicle for feeding. The frequency conversion mixing tank is a frequency conversion speed regulation mixer, the forced mixing tank is a concrete double-shaft forced mixer, and the finished product storage bin is a heat preservation steel plate bin.

Referring to fig. 1, the dust removing mechanism 7 includes a bag-type dust remover, after the bag-type dust remover filters dust gas, the dust is discharged to a powder storage bin for storage, and waste gas enters the waste treatment mechanism. The waste treatment mechanism comprises a waste gas treatment tower, the gas inlet end of the waste gas treatment tower is communicated with the bag-type dust collector, and the treated purified gas is discharged from the gas outlet end of the waste gas treatment tower.

Referring to fig. 1 and 2, the raw materials is at the frequency conversion agitator tank, force the in-process of agitator tank internal stirring, and at the unloading to the in-process of storing in the finished product storage storehouse, the part pitch flue gas and the partial steam of production are taken away by the exhaust tube, it is provided with filter equipment to connect on the exhaust tube, steam is absorbed by filter equipment and is filtered, remaining pitch flue gas gets into the stoving section of thick bamboo again, the emission of pitch flue gas has been reduced, through absorbing the filtration with steam, the condition that the pressure rose in the mixing system that has reduced to lead to because of steam too much takes place, the mixing process of messenger's pitch is safer.

Referring to fig. 2 and 3, the filtering device comprises a filtering box 9, an air inlet pipe 10 and an air outlet pipe 11, the air inlet pipe 10 and the air outlet pipe 11 are communicated with an air exhaust pipe, a plurality of sieve boxes 12 penetrate through the side wall of the filtering box 9, the sieve boxes 12 penetrate through the two side walls of the filtering box 9, a plurality of sieve holes 18 are formed in the top surface and the bottom surface of each sieve box 12, anhydrous calcium chloride is placed in each sieve box 12, and a box cover 13 is arranged at one end of each sieve box 12 in a rotating mode. The end of the box cover 13 remote from its turning part is locked with the sieve box 12 by a locking assembly. The locking assembly comprises a fixing plate 14 fixed on the box cover 13 and a buckling plate 15 rotatably arranged at the top of the fixing plate 14, a clamping hole 16 is formed in the buckling plate 15, and a clamping block 17 for clamping the clamping hole 16 is integrally formed on the top surface of the sieve box 12.

The working principle and the beneficial effect of the asphalt mixing production system of the embodiment of the application are as follows: heating natural aggregate in a drying cylinder, sequentially passing through an aggregate elevator, an aggregate screening machine, an aggregate storage bin and an aggregate metering bin, and then entering a variable-frequency stirring cylinder for stirring; heating the recycled aggregate in a drying cylinder, sequentially passing through a recycled aggregate lifter, a recycled aggregate storage bin and a recycled aggregate metering bin, and then feeding the recycled aggregate into a variable-frequency stirring cylinder for stirring; discharging the powder from the powder storage bin, passing through the powder metering bin, and then stirring in a variable-frequency stirring cylinder; the pitch is stored the storehouse from the pitch and is discharged, after pitch measurement storehouse, gets into the stirring in the frequency conversion agitator tank, and after the stirring, aggregate, reclaimed material, dust, pitch get into and force the agitator tank in and carry out the forced stirring, and the storehouse is stored to the finished product storage to the ejection of compact after forcing the stirring, and the dust of natural aggregate feeding in-process is absorbed by dust removal mechanism 7, filters the back, and the powder gets into the powder and stores in the storehouse, and the abandonment gets into and handles in the exhaust-gas treatment tower, discharges. Get rid of the raw materials and store the storehouse and the storehouse is stored in the preliminary mixing, use the continuous mixing bowl of frequency conversion mixing bowl replacement, under the prerequisite that does not influence the synthetic material quality of pitch mixing, simplified the process of pitch mix production, improved production efficiency, reduced the area of factory building simultaneously, save the cost.

Example 2

Referring to fig. 4, the present embodiment is different from embodiment 1 in that the heating mechanism 1 includes a drying cylinder, a first feeding pipe 101 is disposed at the top of the drying cylinder, a first discharging pipe 102 is disposed at the bottom of the drying cylinder, and a burner 103 is disposed on the side wall of the drying cylinder. The first tapping pipe 102 communicates with the aggregate storage means 2. The air inlet of the burner 103 is communicated with the outside air, and the output end of the burner 103 is communicated with the drying cylinder. The natural aggregate enters the drying cylinder through the first feeding pipe 101 for heating and drying, and enters the aggregate storage mechanism 2 from the first discharging pipe 102 for storage after heating.

Referring to fig. 4, the reclaimed material storage mechanism 3 is provided with a reclaimed material elevator, a reclaimed material storage bin and a reclaimed material metering bin in sequence along the conveying direction. The milling material after just joining in marriage is from the feed end feeding of reclaimed material lifting machine, and the discharge end of reclaimed material lifting machine and the feed end intercommunication of reclaimed material storage storehouse, the discharge end of reclaimed material storage storehouse and the feed end intercommunication of reclaimed material measuring bin, the discharge end and the 6 intercommunications of rabbling mechanism of reclaimed material measuring bin. The reclaimed material hoister is a vertical material hoister, the reclaimed material storage bin is a heat-preservation steel plate bin, and the reclaimed material metering bin is an electronic metering bin.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An asphalt mixing production system is characterized by comprising a heating mechanism (1), an aggregate storage mechanism (2), a reclaimed material storage mechanism (3), a powder storage mechanism (4), an asphalt storage mechanism (5), a stirring mechanism (6), a dust removal mechanism (7) and a waste gas treatment mechanism (8);

the stirring mechanism (6) is sequentially provided with a variable frequency stirring cylinder, a forced stirring cylinder and a finished product storage bin along the conveying direction, the variable frequency stirring cylinder is respectively communicated with the aggregate storage mechanism (2), the reclaimed material storage mechanism (3), the powder storage mechanism (4) and the asphalt storage mechanism (5), and the finished product material in the finished product storage bin is discharged to the finished product material conveying vehicle for feeding.

2. Asphalt mixing production system according to claim 1, characterized in that the aggregate storage mechanism (2) is provided with an aggregate elevator, an aggregate screening machine, an aggregate storage bin and an aggregate metering bin in sequence along the conveying direction, the aggregate elevator is communicated with the heating mechanism (1), and the aggregate metering bin is communicated with the variable-frequency mixing tank.

3. Asphalt mixing production system according to claim 2, wherein the reclaimed material storage mechanism (3) is provided with a reclaimed material elevator, a reclaimed material storage bin and a reclaimed material metering bin in sequence along the conveying direction, the reclaimed material elevator is communicated with the heating mechanism (1), and the reclaimed material metering bin is communicated with the variable-frequency stirring cylinder.

4. Asphalt mixing production system according to claim 1, wherein the powder storage mechanism (4) is provided with a powder storage bin and a powder metering bin in sequence along the conveying direction, the powder storage bin is communicated with the dust removal mechanism (7), and the powder metering bin is communicated with the variable-frequency stirring cylinder.

5. Asphalt mixing production system according to claim 1, wherein said asphalt storage mechanism (5) is provided with an asphalt storage bin and an asphalt metering bin in sequence along the conveying direction, and said asphalt metering bin is communicated with a variable frequency mixing tank.

6. Asphalt mixing production system according to claim 3, characterized in that heating mechanism (1) includes a drying cylinder, drying cylinder top is provided with first inlet pipe (101), drying cylinder bottom is provided with first discharging pipe (102), drying cylinder combustor (103), first discharging pipe (102) and aggregate lifting machine intercommunication, the air intake of combustor (103) and air intercommunication, the output and the drying cylinder of combustor (103) communicate.

7. Asphalt mixing production system according to claim 6, wherein said drying drum is provided as a double drum, the outer drum of said drying drum is provided with a second feeding pipe (104) and a second discharging pipe (105), and said second discharging pipe (105) is communicated with a reclaimed material elevator.

8. An asphalt mixing production system according to claim 4, wherein the dust removing mechanism (7) comprises a bag-type dust remover, the dust outlet of the bag-type dust remover is communicated with the powder storage bin, and the gas outlet of the bag-type dust remover is communicated with the waste gas treatment mechanism (8).

9. Asphalt mixing production system according to claim 8, wherein said waste gas treatment means (8) comprises a waste gas treatment tower, the gas inlet end of which communicates with the gas outlet of said bag-type dust remover and the gas outlet end of which communicates with air.