JPH0452246Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an asphalt mixture manufacturing plant that can process both new material (new aggregate) and recycled material (asphalt pavement waste).

[Conventional technology]

Conventional asphalt mixture manufacturing plants are dedicated plants that exclusively process new materials and recycled materials.

[Problem that the invention attempts to solve]

Therefore, companies that handle both new and recycled materials need to install two dedicated plants regardless of the amount of processing, which incurs equipment costs, requires a large footprint, and is expensive to operate and maintain. There is a problem in that the management costs increase and the economic burden is large.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has a new material hopper for storing new material, a recycled material hopper for storing recycled material, a burner at the upstream end of a rotating drum, and a hopper for receiving recycled material from the new material hopper. a new material inlet for introducing new material into the rotating drum, a discharge manifold at the downstream end of the rotating drum, and an intermediate portion of the rotating drum for receiving the recycled material sent from the recycled material hopper. A dryer equipped with a recycled material input port to be input into a rotating drum, a dust collector that captures dust contained in exhaust gas discharged from the discharge manifold connected to the discharge manifold of the dryer, and a discharge manifold of the dryer. an elevator connected to the elevator for receiving new material and recycled material discharged from the discharge manifold, a screen connected to the elevator for receiving the new material sent out from the elevator and sieving the new material according to particle size, and sieving by the screen. a new material storage bin that stores recycled new material according to particle size; a recycled material storage bin that is connected to the elevator and receives recycled material sent out from the elevator and stores the recycled material; and dust captured by the dust collector. a dust storage bin for storing
It is composed of the new material storage bin, the recycled material storage bin, and a mixer for mixing the new material, recycled material, and dust taken out from the dust storage bin.

[Effect]

To dry and heat new materials and store them according to particle size,
Take out new material from the new material hopper and feed it into the rotating drum from the new material input port. The new material put into the rotating drum is dried and heated by the heat of the burner in the rotating drum, then discharged from the discharge manifold, sent to the screen by elevator, sieved by particle size, and stored in the new material storage bin. Ru.
At this time, the dust (dust and filler) generated within the rotating drum is captured by a dust collector and stored in a dust storage bin.

In addition, in order to heat-process the recycled material in a rotating drum, the recycled material is taken out from the recycled material hopper, put into the rotating drum of the dryer through the recycled material input port, heated in the dryer, taken out from the discharge manifold, and moved into the elevator. The recycled material is then stored in the recycled material storage bin.

To obtain asphalt mixture by taking out the new materials, recycled materials, and dust stored in the new material storage bin, recycled material storage bin, and dust storage bin, respectively,
Take them to a mixer in the desired proportions, add asphalt if necessary, and mix them together with the mixer. Note that it is also possible to dry and heat the new material and the recycled material at the same time using a dryer. in this case,
The new material and the recycled material are mixed together in the dryer and stored in the recycled material storage bin.

〔Example〕

The attached drawing shows one embodiment of the present invention, and this asphalt mixture manufacturing plant includes a new material hopper A, a recycled material hopper B, a dryer C, a dust collector D, an elevator E, and a screen F. , new material storage bin G, recycled material storage bin H, dust storage bin I, mixer J, trolley K, and mixed material silo L
It is composed of.

The new material hopper A is connected to the dryer C by belt conveyors 1 and 2, and the recycled material hopper B is connected to the dryer C by belt conveyors 3 and 4 and a recycled material elevator 5.

The dryer C has a structure shown in FIGS. 2 and 3. That is, the raking blade 6 is provided on the inner peripheral surface.
A burner 8 is installed at the upstream end of a cylindrical rotating drum 7 equipped with a belt conveyor 1, 2 from a new material hopper A.
A new material input port 7a is provided to input new material sent through the rotating drum 7 into the rotating drum 7.
A discharge manifold 9 is provided at the downstream end of the rotary drum 7, and belt conveyors 3, 4 and a recycled material elevator 5 are provided at the intermediate portion of the rotating drum 7 from the recycled material hopper B.
A recycled material input port 7b is provided for inputting the recycled material sent through the rotary drum 7 into the rotating drum 7, and a charging chute 10,
While loosely fitting the charging casings 12 and 13 equipped with the charging ports 11 to cover the charging ports 7a and 7b,
Scraping blades 14 are provided on the outside of the input ports 7a and 7b,
15, and a guide member 16 and a shielding member 17 inside.
When new material is introduced from the input chute 10 and recycled material is introduced from the other input chute 11 while rotating the rotary drum 7 in the circumferential direction, the new material and the recycled material are separated by the scraping blades 1.
4 and 15, enters the rotary drum 7 through input ports 7a and 7b, is dried and heated by a burner 8, and is discharged to the outside from a discharge manifold 9. The guide member 16 moves the new material that has entered the rotary drum 7 from the input port 7a quickly downstream, and the shielding member 17 prevents the new material and recycled material from exiting from the input port 7b to the outside. do.

The dust collector D includes a hot wire wire mesh type asphalt mist removal device 19, a bag filter 20,
It consists of a centrifugal separator 21, an exhaust fan 22, and an exhaust chimney 23, which are connected in the above order to the exhaust manifold 9 of the dryer C via a duct or the like.

In addition, the elevator E has a scraper 24 on the rim.
An endless belt 25 with a large number of baskets 24 attached thereto, a receiving opening 26 at the bottom,
In addition, a discharge chute 27 is provided in the upper part of the main body 28, and as shown in FIG. 29 housing section 30
The discharge chute 27 is provided with a branch chute 32 which is switched by a damper 31. The reception port 26 of this elevator E is connected to the discharge manifold 9 of the dryer C.
and is connected to the centrifugal separator 21 of the dust collector D.

Below the discharge chute 27 of the elevator E,
A screen F is provided that receives the new material sent out from the discharge chute 27 and sieves the new material according to particle size, and below the screen F, a plurality of screens are provided for storing the new material sieved by the screen F according to particle size. A new material storage bin G is provided, and a weighing device 33 is further provided below it. Also,
Below the branch chute 32, the branch chute 3
A recycled material storage bin H is provided to receive and store the recycled material falling through 2, and a weighing device 34 is provided below it.

A dust storage bin I consisting of a filler tank 35 and a dust tank 36 is provided between the new material storage bin G and the recycled material storage bin H.
0 has been contacted. A metering device 37 is provided below the dust storage bin I, and the chute 38, 39 of the dust elevator 41 can be switched by a damper 40.

Furthermore, a mixer J is provided below the measuring devices 33, 34, 37, and the measuring device 3
3, 34, 37 directly or belt conveyor 4
Contacted via 2. The above mixer J has
The additive tank 43 and the asphalt tank 44 are connected by a pipe or the like, and the mixture silo L is connected via a trolley K.

Next, the operation of the asphalt mixture manufacturing plant according to the present invention configured as described above will be explained.

In order to dry and heat the new material and store it in the new material storage bin G, the damper 31 is brought down to the branch chute 32 side to close the branch chute 32, and the belt conveyors 1 and 2, the dryer C, and the dust collector are D and
Operate elevator E and screen F to take out new material from new material hopper A and send it to dryer C. As is well known, the new material put into the dryer C is dried and heated in the rotating drum 7 of the dryer C, transported to the screen F by the elevator E, sieved, and stored according to particle size in the new material storage bin G. be done. At this time, the dust collector D sucks out the exhaust gas in the dryer C with an exhaust fan 22 and removes the dust contained in the exhaust gas through a back filter 20 and a centrifugal separator 2.
Capture with 1. In this case, there is no need to operate the asphalt mist removal device 19.
The dust captured by the bag filter 20 is sent to the dust storage bin I through the dust elevator 41 and stored therein, and the dust captured by the centrifugal separator 21 is sent to the receiving port 26 of the elevator E.

In addition, in order to heat treat the recycled material, the damper 31
1, the branching chute 32 is opened, the discharge chute 27 is closed, and the belt conveyor 3, 4, elevator 5 for recycled materials, and dryer C
, operate the dust collector D and the elevator E,
The recycled material is taken out from the recycled material hopper B and introduced into the rotating drum 7 of the dryer C through the recycled material input port 7b formed in the middle of the rotating drum 7. The recycled material thus placed in the rotary drum 7 is heated by the heating gas of the burner 8, and is transported to the recycled material storage bin H by the elevator E and stored. The asphalt mist generated in the rotating drum 7 of the dryer C is removed by the hot wire mesh removal device 19 of the dust collector D, so it does not clog the bag filter 21 or be released into the atmosphere, causing pollution. There's nothing to do. Further, the powder and granular material 2 in the storage section 30 formed at the lower part of the elevator E
9 receives the heated regenerated material carried from the discharge manifold 9 and prevents the heated regenerated material from adhering to the inner surface of the main body 28. Note that the amount of powder 29 in the storage section 30 decreases over time, so it is replenished from time to time, but the dust captured by the centrifuge 21 is
It can also be used as 9.

To obtain the desired asphalt mixture by taking out the new material, recycled material, and dust stored in the new material storage bin G, recycled material storage bin H, and dust storage bin I, respectively, weigh them with a weighing device 3.
3, 34, 37 and take it out to mixer J.
Additives and asphalt are added from the additive tank 43 and the asphalt tank 44 as needed, and mixed with each other by the mixer J. When storing the asphalt mixture obtained above, it is transferred to the mixture silo L by the trolley K and stored. Note that it is also possible to dry and heat the new material and the recycled material at the same time using the dryer C. In this case, the new material and the recycled material are mixed with each other in the dryer C and stored in the recycled material storage bin H. Since the material is heated by the heating gas of the burner 8 before the recycled material and the temperature of the heated gas is lowered, the asphalt component contained in the recycled material does not burn and generate blue smoke.

[Effect of idea]

As explained above, the asphalt mixture manufacturing plant according to the present invention includes a new material hopper for storing new material, a recycled material hopper for storing recycled material, a burner at the upstream end of the rotating drum, and the new material hopper for storing recycled material. A new material input port is provided for inputting new material into the rotating drum, and a discharge manifold is provided at the downstream end of the rotating drum, and the recycled material hopper is sent from the recycled material hopper to an intermediate member of the rotating drum. A dryer equipped with a recycled material inlet for inputting recycled material into a rotating drum; a dust collector connected to an exhaust manifold of the dryer to capture dust contained in exhaust gas discharged from the exhaust manifold; an elevator that is connected to a discharge manifold and receives new material and recycled material discharged from the discharge manifold; a screen that is connected to the elevator and receives the new material sent out from the elevator and sieves the new material according to particle size; A new material storage bin stores sieved new material according to particle size; a recycled material storage bin connects to the elevator and receives recycled material sent out from the elevator and stores the recycled material; The dryer consists of a dust storage bin for storing dust, the above-mentioned new material storage bin and recycled material storage bin, and a mixer for mixing the new material and recycled material taken out from the dust storage bin and the dust. New materials and recycled materials can be processed individually or at the same time and stored individually in storage bins. It is extremely economical as there is no need to do so.
Another great advantage is that the plant of the present invention can be obtained by slightly modifying a conventional existing dedicated plant, so it is easy to implement.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the overall configuration of an asphalt mixture manufacturing plant according to the present invention, Fig. 2 is a sectional view of the main parts of the dryer, and Fig. 3 is a -
A cross-sectional view of the line portion, and FIG. 4 is a cross-sectional view of the main part of the elevator. A... New material hopper, B... Recycled material hopper, C...
...Dryer, D...Dust collector, E...Elevator, F...Screen, G...New material storage bin, H
...Recycled material storage bin, I...Dust storage bin, J...
...Mixer, 7...Rotating drum, 7a...New material inlet, 7b...Recycled material inlet, 8...Burner, 9...
...Discharge manifold, 19...Removal device, 29...
... Powder, 30... Storage section, f... Scooping surface.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A new material hopper for storing new material, a recycled material hopper for storing recycled material, a burner at the upstream end of the rotating drum, and a It is equipped with a new material inlet for introducing material into the rotating drum, and a discharge manifold is provided at the downstream end of the rotating drum, and a middle part of the rotating drum is provided with a new material inlet for feeding material into the rotating drum. a dryer equipped with a recycled material inlet for inputting recycled material into the dryer; a dust collector connected to the discharge manifold of the dryer to capture dust contained in exhaust gas discharged from the discharge manifold; An elevator that receives new material and recycled material discharged from the discharge manifold, a screen that is connected to the elevator and receives the new material sent out from the elevator and sieves the new material according to particle size, and the new material that has been sieved by the screen. a new material storage bin that stores the recycled material according to particle size; a recycled material storage bin that is connected to the elevator and receives recycled material sent out from the elevator and stores the recycled material; and a dust collector that stores the dust captured by the dust collector. a storage bin;
An asphalt mixture manufacturing plant comprising the new material storage bin, the recycled material storage bin, and a mixer for mixing the new material and recycled material taken out from the dust storage bin, and dust. (2) The asphalt mixture manufacturing plant according to claim 1, wherein the dust collector is equipped with an asphalt mist removal device. (3) The asphalt mixture manufacturing plant according to claim 1 of the utility model registration claim, characterized in that a granular material storage section is formed at the lower part of the bucket scooping surface of the elevator.