JP3443444B2 - Asphalt plant - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an asphalt plant for producing an asphalt mixture as a road paving material.
In particular, the present invention relates to an asphalt plant for producing a special asphalt mixture such as a colored pavement and a non-slip pavement. [0002] Asphalt mixtures produced in an asphalt plant may be specially produced depending on the intended use. For example, in the case of pedestrian road pavement, it is necessary to create a cityscape. In some cases, colored paving with various colors is performed. As the asphalt mixture-based colored pavement, there are a method of adding a pigment such as red iron to the heated asphalt mixture, and a method of using a petroleum resin (a decolorized binder) instead of asphalt of the heated asphalt mixture. Conventionally, for example, in a method of adding a pigment such as red iron oxide, a predetermined amount of packed pigment is provided on a mixer side of a plant body or the like. The bag containing the pigment is opened and manually charged into the mixer for each batch. The special asphalt mixture (hereinafter, referred to as “special mixture”) produced by adding a special material as described above is often supplied manually because the production amount is still small. [0004] However, in recent years,
Colored pavements have also been gradually increasing, and there have been places where it has become impossible to meet large demands by manually adding pigments as in the past. [0005] In view of the above, an object of the present invention is to provide an asphalt plant which is convenient for producing a special asphalt mixture in addition to a normal asalto mixture. SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an aggregate heated by a dryer, which is sieved by a vibrating sieve and stored in an aggregate storage bin according to particle size. A specific amount of heated aggregate is dispensed from a storage bin to a mixer and mixed with asphalt, etc. to produce an asphalt mixture. In addition to installing a special mixture manufacturing device that includes a material storage tank, a measuring tank, and a mixer to manufacture a special asphalt mixture, the aggregate storage bin of the plant body is used to extract heated aggregate from each compartment . Emission
A guide chute for supplying heated aggregate discharged from the discharge gate to the special mixture production device side,
Heat accumulated inside the chute at a predetermined position on the guide chute
Equipped with a level meter that detects the amount of aggregate,
When extracting heated aggregate from the storage bin,
Release the heat sink to discharge the heated aggregate into the guide chute and store it.
The level meter on the guide chute gives a full signal
If the discharge gate is closed, heated aggregate from the aggregate storage bin
Is characterized in that it is configured to stop the extraction . According to the present invention, a special material storage tank, a measuring tank, and the like for storing a special material to be used as a material for producing a special asphalt mixture are provided on the side of a plant body of an asphalt plant.
When a special mixture manufacturing device equipped with a mixer and a mixer is installed and a special mixture is manufactured, the discharge gate for the heated aggregate stored in the aggregate storage bin of the plant body is opened to guide the heated aggregate.
And store it in the guide chute.
If the level meter gives a full signal, close the discharge gate.
After stopping the removal of the heated aggregate from the aggregate storage bin,
The heated aggregate accumulated in the guide chute is supplied to the special mixture production device side, and after a predetermined amount is measured, it is put into a mixer of the special mixture production device, and the special material stored in the special mixture production device is measured in a predetermined amount. In addition, asphalt and the like are further added to produce a predetermined special asphalt mixture. As described above, the asphalt plant of the present invention is a convenient plant capable of shipping both ordinary mixtures and special mixtures, and supplies heated aggregate in the aggregate storage bin of the plant to the special mixture production apparatus side. As a result, the aggregate storage bins are shared, so that the equipment costs can be saved, and furthermore, it can be easily added to an existing asphalt plant. Further, if the number of special material storage tanks on the side of the special mixture production apparatus is increased, various kinds of special mixtures can be produced without any modification to the main plant body. In addition, the level meter of the guide chute gives a full signal.
When fired, the amount of heated aggregate in the guide chute is specially mixed.
Or just as much as one batch of product
If you adjust it to accumulate a little more,
Excessive heating inside the guide chute at the end of production
This is convenient because the amount of aggregate remaining material to be extracted can be reduced. Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a known asphalt plant dryer, which sends hot air from a burner 3 into a rotatably inclined drum 2 and sends the hot air to a drum 2 (not shown) downstream of an exhaust flue 4. While maintaining the high-temperature gas flow passing through the drum 2 by suction, the aggregate is discharged at a predetermined ratio from an aggregate hopper (not shown) that stores the aggregate according to various particle sizes, and the aggregate is discharged into the drum 2 via the conveyor 5. While being fed, the aggregates are heated to a desired temperature while being rolled down toward the discharge side while being scraped up by the scraping blades in the drum 2. The heated aggregate discharged from the dryer 1 is lifted up to the top of the plant body 7 by a bucket elevator 6 and is fed into a vibrating sieve 8 for sieving the aggregate by particle size. An aggregate storage bin 9 for storing aggregates according to particle size is disposed below the vibrating sieve 8. The aggregate storage bin 9 appropriately partitions the inside of the bin to form compartments 10 a, 10 b, 10 c, and 10.
2.5 mm, sieved by vibrating sieve 8
The following sand, and 2.5 to 5 mm, 5 to 13 mm, 13 to
25 mm crushed stone is stored in each compartment. Below the aggregate storage bin 9, an aggregate measuring tank 10 for cumulatively measuring the aggregate, a stone powder measuring tank 12 for measuring the stone powder stored in the stone powder storage bin 11, and an asphalt measuring tank 13 for measuring the molten asphalt. Is arranged. A mixer 14 for mixing the respective materials measured by the measuring tank is provided below these measuring tanks. On the side of the plant body 7, there is provided a special mixture producing apparatus 15 for producing a special mixture by adding a special material. The special mixture producing device 15 stores special material storage tanks 16a and 16a for storing special materials such as pigments and resin materials.
.. are appropriately provided. For example, in the case of producing color paving materials of various colors, a number of storage tanks capable of storing pigments corresponding to the number of colors are provided. In addition, if a non-slip pavement or the like using a resin material is to be manufactured, the number of storage tanks according to the number of types of the resin material to be used will be provided. The supply of the special material to the special material storage tanks 16a, 16b,... Is performed by an appropriate vertical transfer device 17 according to the properties of the special material. Distributing means 19 such as a damper for distributing the materials to the storage tanks is appropriately arranged, or the number of the vertical transfer devices 17 corresponding to the number of the storage tanks is installed. 20 is a stone powder storage bin, 21 is a stone powder measuring tank,
Reference numeral 22 denotes an asphalt measuring tank, which is provided with the same devices as the components of the plant body 7, and can share auxiliary facilities that can be shared because it is adjacent to the plant body 7. Reference numeral 23 denotes a measuring tank for measuring the heated aggregate supplied from the plant body 7 by an aggregate extracting and supplying means described later. In the figure, special material storage tanks 16a and 16b are shown.
Special materials paid out from are also cumulatively weighed. The special material may be provided with a dedicated measuring tank separately. Reference numeral 24 denotes a mixer for producing a special mixture, which is installed below each of the measuring tanks 21, 22, 23, and has the same structure as that of the mixer 14 of the plant body 7, but the mixing capacity is limited. Considering the frequency and economy, adopt an appropriate capacity. Next, a description will be given of the aggregate extracting and supplying means 25 which extracts heated aggregate from the aggregate storage bin 9 of the plant body 7 and supplies the heated aggregate to the special mixture producing apparatus 15 side. Each compartment 10a, 10 of the aggregate storage bin 9
In order to extract the heated aggregate from the b, 10c, 10d, the discharge gates 26a, 26b, 26c, 2 are opened by opening the appropriate positions of the side walls of the compartments 10a, 10b, 10c, 10d.
Discharge chutes 27a, 27b, 27c with 6d,
27d is attached. The discharge chutes 27a, 27b, 27
The guide chute 28 is attached so as to surround c and 27d, and the tip dispensing portion of the guide chute 28 is positioned above the measuring tank 23 of the special mixture producing apparatus 15. Inside the guide chute 28 are discharge gates 26a, 26b, 26
The guide chute 2 is partitioned by a partition plate 29 so that the heated aggregate discharged from c and 26d is not mixed.
8 are dispensing gates 30a, 30b, 30
c, 30d are attached. The guide chute 28 has level meters 31a and 31 for detecting the amount of heated aggregate accumulated in the chute.
b, 31c, and 31d are attached.
1a, 31b, 31c, 31d is attached at a position where the dispensing gates 30a, 30b, 30c, 30d are closed and the heated aggregate is accumulated up to the level meters 31a, 31b, 31c, 31d to produce one batch of a special mixture. It is installed at a position where it can store more than a little more than the amount of each of the aggregates used. If the levels of the level meters 31a, 31b, 31c, and 31d are slightly larger than the amounts of the respective heated aggregates used for manufacturing one batch of the special mixture, the amount withdrawn when the manufacture of the special mixture is completed. Is convenient. As described above, the level meters 31a, 31b, 31
If c and 31d are attached, the discharge gates 26a, 26b, 26c and 26d are opened by empty transmission of the level meters 31a, 31b, 31c and 31d after the shipment of the special mixture, and the discharge gates 26a and 26b by full transmission. ,
Gate opening / closing control for closing the gates 26c and 26d is performed. When the special mixture is produced in the special mixture producing apparatus 15, the desired compartments 10a, 10b, 1 of the aggregate storage bin 9 are issued according to the shipping start command.
0c, 10d discharge gates 26a, 26b, 26c, 2
6d is released and the heated aggregate is discharged into the guide chute 28. When the heated aggregate accumulates up to the level meters 31a, 31b, 31c, 31d and a full signal is issued, the discharge gates 26a, 26b, 26c, 26d are closed. Next, the payout gate 3 of the guide chute 28
0a, 30b, 30c, 30d are sequentially opened, and the measuring tank 2 is opened.
Heated aggregate is put into 3 and cumulatively measured by a predetermined amount. By discharging the heated aggregate in the guide chute 28, the level meters 31a, 31b, 31c and 31d are provided.
Emits an empty signal, the discharge gates 26a, 26b, 26
The c and 26d are opened, and the heated aggregate in the aggregate storage bin 9 is discharged into the guide chute 28 and the level meters 31a and 3d are released.
It is replenished to the positions 1b, 31c, 31d. When the measurement of the heated aggregate is completed in the measuring tank 23, the desired special material is discharged into the measuring tank 23 from the special material storage tanks 16a, 16b,. The materials are put into the mixer 24.
Also, the stone powder and asphalt measured in the stone powder measuring tank 21 and the asphalt measuring tank 22 are sequentially charged into the mixer 24, and mixed and adjusted in the mixer 24 for a predetermined time to produce a desired special mixture. The present invention is not limited to the specific embodiment described above.
When the guide chute 28 adopted as 5 cannot secure the inclined angle at which the heated aggregate flows due to the height of the plant, a small-capacity storage bin is installed below the discharge gates 26a, 26b, 26c, and 26d, and a special transfer device is used. In other words, the apparatus may be such that the heated aggregate stored in the aggregate storage bin 9 of the plant body 7 can be extracted and supplied to the special mixture manufacturing apparatus 15 side. The special mixture manufacturing apparatus 15 may use a special asphalt to manufacture a special mixture.
It goes without saying that various changes can be made without departing from the spirit of the present invention. As described above, in the asphalt plant according to the present invention, a special material storage tank 16a for storing a special material to be used for producing a special asphalt mixture is provided on the side of the plant body 7. , 16b ..., measuring tank 23,
And a mixer 24, etc., and a special mixture production apparatus 15 for producing a special asphalt mixture is installed.
Withdrawn 0a, 10b, 10c, the heating aggregate from 10d
Discharge gates 26a, 26b, 26c, 26d
From the discharge gates 26a, 26b, 26c, 26d.
A guide chute 28 for supplying the discharged heated aggregate to the special mixture producing apparatus 15 is provided.
Detect the amount of heated aggregate accumulated inside the chute at the fixed position
Level meters 31a, 31b, 31c, 31d are provided.
When the heated aggregate is extracted from the aggregate storage bin 9 of the
At this time, the discharge gates 26a, 26b, 26c, 26
Release d and discharge the heated aggregate into the guide chute 28
It is stored and the level meter 31a provided in the guide chute 28,
If 31b, 31c, 31d emits full signal, discharge gate
26a, 26b, 26c, 26d are closed and aggregate storage vias are closed.
Is configured to stop the extraction of heated aggregate from
Therefore, it is a convenient plant that can ship both ordinary and special mixtures. In addition, the aggregate storage bin 9 is shared by supplying the heated aggregate in the aggregate storage bin 9 of the plant body 7 to the special mixture production device 15 side, so that equipment costs can be reduced, and It can be easily added to existing asphalt plants. Further, the heated aggregate is extracted from the aggregate storage bin 9.
When taking, level meters 31a, 3 provided on the guide chute 28
When 1b, 31c, 31d emits a full signal, the guide shoe
In the sample 28, the amount of heated aggregate is the amount of one batch of the special mixture.
Will accumulate as much as, or slightly more than
Guide you when the special mixture is no longer manufactured
The amount of heat aggregate left over inside the chute 28
It is convenient because it requires less. Furthermore, if the number of special material storage tanks on the side of the special mixture production apparatus 15 is increased, there is also a convenience that various kinds of special mixtures can be produced without any modification of the main plant body 7.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cut-away schematic configuration diagram showing one embodiment of the present invention. FIG. 2 is an enlarged perspective view of a main part of FIG. [Description of Signs] 1 ... Dryer 7 ... Plant body 9 ... Aggregate storage bins 10a, 10b, 10c, 1
0d ... compartment 14 ... mixer 15 ... special mixture production equipment 16a, 16b ... special material storage tank 23 ... measuring tank 24 ... mixer 25 ... aggregate extraction supply means 26a, 26b, 26c, 26d ... discharge gate 28
... Guiding chutes 30a, 30b, 30c, 30d ... Payout gates 31a, 31b, 31c, 31d ... Level meter

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-216816 (JP, A) JP-A-58-106405 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E01C 19 / 02,19 / 05

Claims (1)

(57) [Claims] (1) Aggregates heated by a dryer are sieved by a vibrating sieve and stored in an aggregate storage bin according to particle size, and a predetermined amount of heated aggregate is stored in the aggregate storage bin. A special material storage tank, a measuring tank, and a mixer are provided on the side of the asphalt plant that pays out to the mixer and mixes it with asphalt, etc. to produce an asphalt mixture. A special mixture production apparatus for producing a special asphalt mixture is provided, and a discharge gate for extracting heated aggregate from each compartment is provided in the aggregate storage bin of the plant body.
A guide chute for supplying the heated aggregate discharged from the discharge gate to the special mixture production device side,
Heated bone accumulated inside the chute at a predetermined position of the inner chute
Equipped with a level meter to detect the amount of aggregate
When extracting heated aggregate from the storage bin,
And release the heated aggregate into the guide chute for storage
And the level meter on the guide chute gives a full signal.
Of the heated aggregate from the aggregate storage bin
An asphalt plant characterized in that sampling is stopped .