CN210946381U

CN210946381U - Asphalt mixture regenerating device with cold adding function

Info

Publication number: CN210946381U
Application number: CN201921576256.1U
Authority: CN
Inventors: 殷作耀; 许�鹏; 庄文荣
Original assignee: Fujian Tietuo Machinery Co Ltd
Current assignee: Fujian Tietuo Machinery Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-07-07
Anticipated expiration: 2029-09-20

Abstract

The utility model discloses an asphalt mixture regenerating device with cold adding function, which comprises a coarse particle RAP cold bin, a coarse particle conveying line, a coarse particle RAP regenerating roller, a hot material temporary storage bin, a fine particle RAP cold bin, a fine particle conveying line, a fine particle temporary storage bin, an RAP metering scale and a stirrer; the coarse particle RAP cold bin is connected with a feed inlet of the coarse particle RAP regeneration roller through a coarse particle conveying line, and a discharge outlet of the coarse particle RAP regeneration roller is connected with the hot material temporary storage bin; the fine particle RAP cold bin is connected with a feed inlet of the fine particle temporary storage bin through a fine particle conveying line; the hot material temporary storage bin and the fine particle temporary storage bin are connected with a feed inlet of the stirrer through the RAP metering scale. The utility model has the characteristics of heat RAP coarse grain alone and realize the cold interpolation of RAP fine particle, avoid RAP fine particle scorching ageing, RAP improves the recovery efficiency of pitch in the fine particle.

Description

Asphalt mixture regenerating device with cold adding function

Technical Field

The utility model relates to an asphalt recycling mixture field, concretely relates to is an asphalt recycling device with cold function of adding.

Background

The regeneration mode in the current market is mainly that RAP is heated by a roller and then is stirred with new materials to obtain an RAP asphalt mixture, namely new aggregate and RAP are respectively heated and metered by independent drying rollers and then are put into a stirrer, and asphalt, powder and aggregate are added to be stirred into the new asphalt mixture. In the RAP heating process, the specific surface area is greatly different due to different particle sizes. Therefore, materials with different particle sizes are not heated evenly under the same heating environment. The phenomenon caused is that: 1. when the fine material is heated to the required temperature, the coarse material is far from reaching the required temperature; 2. when the coarse material is heated to the required temperature, the asphalt in the fine material is burnt, aged and loses function. In general, the proportion of fine particles (the particle size is less than or equal to 5mm) in RAP is small, but the content of asphalt in RAP is high; coarse particles (the particle size is more than or equal to 5mm) are relatively large, and mainly comprise aggregate. Heating to a corresponding temperature is needed in the RAP regeneration process to ensure the adding proportion of RAP, so that the temperature of a large proportion of materials is needed to be ensured, and the asphalt in the fine materials with smaller proportion is burned, aged and lost. The portion of the RAP with the highest added value is wasted. Meanwhile, the content of asphalt in the fine materials is high in the actual production process, and the problem of adhesion to the heating roller after heating and melting is difficult to solve.

In view of the above, the present inventors have made extensive studies on the above-mentioned drawbacks of the prior art, and have made this invention.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bituminous mixture regenerating unit with cold function that adds, it has the characteristics that heat RAP coarse grain alone and realize the cold interpolation of RAP fine particle, avoids RAP fine particle scorching ageing, improves the recovery efficiency of pitch in the RAP fine particle.

In order to achieve the above purpose, the solution of the present invention is:

an asphalt mixture regenerating device with a cold adding function comprises a coarse particle RAP cold bin, a coarse particle conveying line, a coarse particle RAP regenerating roller, a hot material temporary storage bin, a fine particle RAP cold bin, a fine particle conveying line, a fine particle temporary storage bin, an RAP metering scale and a stirrer; the coarse particle RAP cold bin is connected with a feed inlet of the coarse particle RAP regeneration roller through a coarse particle conveying line, and a discharge outlet of the coarse particle RAP regeneration roller is connected with the hot material temporary storage bin;

the fine particle RAP cold bin is connected with a feed inlet of the fine particle temporary storage bin through a fine particle conveying line; the hot material temporary storage bin and the fine particle temporary storage bin are connected with a feed inlet of the stirrer through the RAP metering scale.

Further, the coarse particle conveying line comprises a coarse material conveying belt and a coarse material hoister, the coarse particle RAP cold bin is connected with a lifting inlet of the coarse material hoister through the coarse material conveying belt, and a lifting outlet of the coarse material hoister is connected with a feeding hole of the coarse particle RAP regeneration roller.

Further, the coarse grain conveyer belt includes first conveyer belt and second conveyer belt, first conveyer belt is located coarse grain RAP cold burden storehouse below, the export below of first conveyer belt is provided with the shale shaker, the second conveyer belt is connected the export of shale shaker with the promotion import of coarse material lifting machine.

Further, the number of the coarse particle RAP cold bins is three.

Further, the fine particle conveying line comprises a fine particle conveying belt and a fine particle hoister, the fine particle RAP cold bin is connected with a hoisting inlet of the fine particle hoister through the fine particle conveying belt, and a hoisting outlet of the fine particle hoister is connected with the fine particle temporary storage bin.

Furthermore, the hot material temporary storage bin and the fine particle RAP cold material bin share one RAP metering scale and are connected with a feeding hole of the stirrer.

Furthermore, the hot material temporary storage bin and the fine particle RAP cold material bin are respectively connected with a feed inlet of the stirrer by using a set of RAP metering scale.

Further, a metering conveyer belt is arranged below the fine particle temporary storage bin, and the fine particle temporary storage bin is connected with an RAP metering scale through the metering conveyer belt.

After the structure of the oil adding device is adopted, the utility model relates to a bituminous mixture regenerating unit with cold function that adds, through separating RAP coarse grain and RAP fine particle, RAP coarse grain heats through coarse grain RAP regeneration cylinder, adds the RAP coarse grain through RAP weigher measurement again and stirs in the mixer. Because the RAP fine particles are added into the stirrer in a cold adding mode and are mixed with the heated RAP coarse particles, the phenomenon that the asphalt in the RAP fine particles is burnt, aged and lost in an RAP regeneration roller is avoided, and the recovery efficiency of the asphalt in the fine particles is improved.

Drawings

Fig. 1 is the utility model relates to a bituminous mixture regenerating unit's with cold function of adding structure sketch map.

In the figure: a coarse particle RAP cold silo 11; a coarse material conveyor belt 12; a first conveyor belt 121; a second conveyor belt 122; a vibrating screen 123; a coarse material hoist 13; a coarse RAP regenerating drum 14; a combustion chamber 141; a hot material temporary storage bin 15; a fine particle RAP cold bin 21; a fine particle transport line 22; a fines conveyer belt 221; a fines elevator 222; a fine particle temporary storage bin 23; an RAP scale 3; and a stirrer 4.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

As shown in fig. 1, it is an asphalt mixture regenerating device with cold adding function according to the present invention, which comprises a coarse particle RAP cold storage bin 11, a coarse particle transfer line, a coarse particle RAP regeneration roller 14, a hot material temporary storage bin 15, a fine particle RAP cold storage bin 21, a fine particle transfer line 22, a fine particle temporary storage bin 23, an RAP metering scale 3 and a blender 4; the coarse RAP regenerating drum 14 is connected with a combustion chamber 141 for supplying heat to the coarse RAP regenerating drum 14. The coarse particle RAP cold storage bin 11 is connected with a feeding hole of the coarse particle RAP regeneration roller 14 through a coarse particle conveying line, and a discharging hole of the coarse particle RAP regeneration roller 14 is connected with the hot material temporary storage bin 15; the fine particle RAP cold storage bin 21 is connected with the feed inlet of the fine particle temporary storage bin 23 through a fine particle conveying line 22; the hot material temporary storage bin 15 and the fine particle temporary storage bin 23 are connected with the feed inlet of the stirrer 4 through the RAP metering scale 3.

Thus, the utility model relates to an asphalt mixture regenerating unit with cold function of adding, through separating RAP coarse grain and RAP fine particle, RAP coarse grain heats through coarse grain RAP regeneration cylinder 14, stirs RAP coarse grain in 3 measurement additions to mixer 4 through RAP weigher, can add new asphalt mixture's raw materials to mixer 4 simultaneously. Because the RAP fine particles are added into the stirrer 4 in a cold adding mode to be mixed with the heated RAP coarse particles, the phenomenon that the asphalt in the RAP fine particles is burnt, aged and lost in an RAP regeneration roller is avoided, and the recovery efficiency of the asphalt in the fine particles is improved.

Preferably, the coarse particle conveying line comprises a coarse particle conveying belt 12 and a coarse particle elevator 13, the coarse particle RAP cold storage bin 11 is connected with a lifting inlet of the coarse particle elevator 13 through the coarse particle conveying belt 12, and a lifting outlet of the coarse particle RAP cold storage bin 13 is connected with a feeding hole of the coarse particle RAP regeneration roller 14. The RAP coarse particle cold charge is stored in the coarse particle RAP cold charge bin 11, the coarse particle conveyor belt 12 conveys the RAP coarse particle into the lifting inlet of the coarse particle elevator 13, and further conveys the RAP coarse particle into the coarse particle RAP regeneration roller 14 by the lifting action of the coarse particle elevator 13.

Furthermore, the coarse particle conveyer belt comprises a first conveyer belt 121 and a second conveyer belt 122, the first conveyer belt 121 is located below the coarse particle RAP cold bin 11, a vibrating screen 123 is arranged below an outlet of the first conveyer belt 121, and the second conveyer belt 122 is connected with an outlet of the vibrating screen 123 and a lifting inlet of the coarse material hoister 13. The vibrating screen 123 filters and removes large materials such as wood or stone mixed in the RAP coarse particles, and therefore subsequent processes can be performed smoothly.

Preferably, the number of the coarse RAP bins 11 is three. Three coarse particle RAP cold storage bins 11 are arranged and used for placing different aggregate RAP coarse particles respectively. Preferably, three coarse RAP bins 11 may be arranged side by side along the first conveyor belt 121.

Preferably, the fine particle conveying line 22 comprises a fine particle conveying belt 221 and a fine particle elevator 222, the fine particle RAP cold storage bin 21 is connected with a lifting inlet of the fine particle elevator 222 through the fine particle conveying belt 221, and a lifting outlet of the fine particle elevator 222 is connected with the fine particle temporary storage bin 23.

Preferably, the hot material temporary storage bin 15 and the fine particle RAP cold storage bin 21 share a set of RAP weigher 3 to be connected with the feeding port of the stirrer 4. As shown in fig. 1, the RAP coarse particles and RAP fine particles are sequentially metered one on top of the other on the RAP metering scale 3 and then added to the blender 4 to be blended together. Alternatively, the RAP coarse particles and the RAP fine particles may be weighed separately and added to the blender 4.

Preferably, the hot material temporary storage bin 15 and the fine particle RAP cold storage bin 21 are respectively connected with the feeding port of the stirrer 4 by using a set of RAP weigher 3 (not shown in the figure). Thus the coarse RAP particles and the fine RAP particles can be dosed independently using the corresponding RAP doser 3.

Preferably, a metering conveyer belt is arranged below the fine particle temporary storage bin 23, and the fine particle temporary storage bin 23 is connected with the RAP metering scale 3 through the metering conveyer belt. The fine particle RAP is conveyed to the RAP weighing scale 3 through the metering conveying belt, so that the addition of the fine particle RAP is facilitated.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims

1. The asphalt mixture regeneration device with the cold addition function is characterized by comprising a coarse particle RAP cold bin, a coarse particle conveying line, a coarse particle RAP regeneration roller, a hot material temporary storage bin, a fine particle RAP cold bin, a fine particle conveying line, a fine particle temporary storage bin, an RAP metering scale and a stirrer; the coarse particle RAP cold bin is connected with a feed inlet of the coarse particle RAP regeneration roller through a coarse particle conveying line, and a discharge outlet of the coarse particle RAP regeneration roller is connected with the hot material temporary storage bin;

2. The asphalt mixture regenerating device with the cold adding function as claimed in claim 1, wherein said coarse particle conveying line comprises a coarse conveyor belt and a coarse elevator, said coarse particle RAP cold bin is connected with the lifting inlet of said coarse elevator through the coarse conveyor belt, and the lifting outlet of said coarse elevator is connected with the feeding inlet of said coarse particle RAP regenerating roller.

3. The asphalt mixture recycling device with the cold adding function as claimed in claim 2, wherein said coarse particle conveyor belt comprises a first conveyor belt and a second conveyor belt, said first conveyor belt is located below said coarse particle RAP cold bin, a vibrating screen is arranged below the outlet of said first conveyor belt, and said second conveyor belt connects the outlet of said vibrating screen and the lifting inlet of said coarse material elevator.

4. The asphalt mixture recycling device with cold adding function as claimed in claim 1, wherein the number of the coarse RAP cold bins is three.

5. The asphalt mixture recycling device with the cold adding function as claimed in claim 1, wherein said fine particle conveying line comprises a fine particle conveyer belt and a fine particle elevator, said fine particle RAP cold bin is connected with a lifting inlet of said fine particle elevator through said fine particle conveyer belt, and a lifting outlet of said fine particle elevator is connected with said fine particle temporary storage bin.

6. The asphalt mixture regenerating device with the cold adding function as claimed in claim 1, wherein said hot stock temporary storage bin and said cold fine RAP bin share a RAP weighing scale and are connected with the feed inlet of said blender.

7. The asphalt mixture regenerating device with the cold adding function as claimed in claim 1, wherein said hot material temporary storage bin and said fine particle RAP cold material bin are respectively connected with the feeding port of said blender by using a set of RAP weigher.

8. The asphalt mixture recycling device with the cold adding function as claimed in claim 1, wherein a metering conveyer belt is arranged below the fine particle temporary storage bin, and the fine particle temporary storage bin is connected with an RAP metering scale through the metering conveyer belt.