JPS5844107A - Apparatus for treating waste pavement material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a pavement waste treatment device.

Among construction wastes, cement concrete and asphalt concrete are considered to be the most difficult to recycle. Even if efforts are made to carefully remove only asphalt waste when replacing asphalt concrete pavement structures, in reality, a considerable amount of other materials other than asphalt waste will be mixed in. In addition, various 1! The reality is that waste materials excavated at the construction site are brought in. In that case, the percentage of materials other than asphalt waste mixed in will be much higher.

In view of these circumstances, an object of the present invention is to provide an apparatus that can effectively process asphalt waste and pavement waste mixed with other materials.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, 1 indicates a sieve. This sieve 1 is arranged at an angle. dump truck 2
Paving waste materials (including asphalt concrete waste materials, cement concrete waste materials, etc.) carried out from
.

It is placed on top of A1 and is designed to fall due to its own weight or vibration. A belt conveyor 3 is arranged below the sieve 1. One end of belt t73 reaches stockyard 4. Most of the materials other than asphalt waste and cement waste have a particle size of 5Q+u+ or larger, and are sorted by the aforementioned sieve 1.
It falls downward and is conveyed to the stockyard 4 by the belt conveyor 3.

These small particle size contaminants are mainly reused as roadbed material.

Following the sieve 1, a pavement waste material conveyance path 5 is provided. In the illustrated example, the pavement waste material conveyance path 5 is constructed of concrete walls, fire bricks, heat insulating materials, iron plates, etc., and its top is covered with a roof 6 to prevent heat dissipation.

For example, wheels 8 are attached to the bottom of the container 7 and configured to roll on rails 9. The container 7 has a through hole formed therein. These through holes are for dissipating the -C water therethrough. A screw conveyor t710 is provided at the bottom of the conveyance path 5. This screw conveyor 10
is for carrying out the water flowing at the bottom of the conveyance path 5 and the mud contained therein to the outside of the conveyance path 5. It is preferable that the screw conveyor 10 is disposed over almost the entire length of the conveyance path 5. For example, by connecting a basket conveyor (not shown), it is possible to carry the sludge-like material due to mud or the like into the truck.

Further, a water sprinkler device, for example, a pipe 11 with many holes, is arranged slightly above the moving space of the container 7. A heater 12, a pump 13, and a water tank 14 are connected to this pipe 11. The pump 13 pumps water from the water tank 14, and at the same time, the heater 12 (for example, a burner) heats the water, and the hot water is poured into the pipe. It is designed to be poured into the pavement waste material in the container 7 through the small hole 11. Note that the configuration may be such that the hot water is also sprayed onto the side surface of the container 7.

The pipes 11 are arranged at predetermined intervals along almost the entire length of the conveyance path 5 so that when the container 7 rolls on the rail 9, the lagoon is always poured into the paving waste material inside the container 7. .

Burners (not shown) are arranged at predetermined intervals on the side wall and bottom of the conveyance path 5, and hot air from the burners is blown onto the side and bottom of the container 7, thereby promoting heating of the waste material in the container 7. You can also do it. In this way, the space of the conveyance path 5 is maintained at a high temperature by the hot air from the burner, and the asphalt waste material is softened in a short time.

As shown in FIGS. 2 and 3, at the end of the conveyance path,
A device, for example a hoist 15, is provided for discharging the heated pavement waste from the container 7. The container 7 is overturned by the hoist 15, whereby the pavement waste material inside the container is discharged to the outside. A vibrating sieve 16 is installed at the discharge location. This vibrating sieve 16 is provided with hoppers 17, 18, 19 for predetermined sizes, and hoppers exceeding these sizes enter a chute 20.

Since the pavement waste material arriving at the vibrating sieve 16 has already been sufficiently heated within the conveyance path 5, the asphalt waste material is softened. Therefore, when the asphalt waste material is passed through the vibrating sieve 16, each of the aggregates in the asphalt waste material becomes separated and falls into one of the three hoppers 17 to 19 depending on the size of the aggregate. The oversized ones are mostly made of cement concrete waste, and they are placed in chute 2.
The materials are introduced into the crusher 21 via the crusher 21, where they are crushed into a predetermined size and then stocked in the stockyard 22. In addition, recycled asphalt materials from the hoppers 17 to 19 are stocked in respective stock yards 23, 24, and 25.

Next, the operation of the device of the present invention will be explained. Asphalt concrete waste, cement concrete waste, crushed stone for roadbed material, earth and sand for roadbed material, etc., are transported in their excavated state by dump truck 2 to the reclamation site and placed in soil in sieve 1, and the rest is automatic. Therefore, pavement waste material containing these various substances can be recycled.

First, particles of small size are sorted by a sieve 1 and transported to a stockyard 4 by a belt conveyor 3. Those with a relatively large particle size are placed in a container 7 and transported through the pavement waste material conveyance path 5.
゜Then, the ## charging material hoist 15 heated in this way transfers it from the container 7 to the vibrating sieve 16. Of the pavement waste materials, asphalt waste materials have already softened, so
Since the adhesion of the aggregates to each other is weak, they are easily separated into pieces by the photographic sieve 16 and sorted into hoppers 17 to 19 according to the size of each aggregate. Most of the oversized ones are made of cement concrete, and they are crushed by the crusher 21.

Since the present invention is configured as described above, it has the remarkable effect that large pavement waste excavated from conventional pavement can be recycled as it is without preliminary sorting or preliminary crushing into a predetermined size. is obtained.

Note that the present invention is not limited to the above-mentioned embodiments,
It includes various other examples.

For example, it is possible to use a conveyor instead of a container with wheels as a conveyance device. It is also possible to make each part of the pavement waste treatment device into units and make them easy to move with wheels or the like.

Further, when the Asnoalto waste material softened by heating is transported, separation can be promoted by poking it with a rod-shaped object.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing an example of the pavement waste treatment device according to the present invention, Fig. 2 is a plan view partially showing the device of the present invention in cross section, and Fig. 3 is a partially cross-sectional view showing the device of the present invention. It is a three-dimensional diagram. 1... Sieve, 2... Dump truck, 3... Belt conveyor, 5... Conveyance path, 6... Roof, 7...
・Container, 8...Wheel, 9...Rail, 10...Screw conveyor, 11...Pipe, 12...Heater, 13...Pump, 14...Water reservoir, 15.・・・
Hoist, 16... Vibrating sieve, 17.18.19.
... Small brim - 120... Shoot, 21... Kuratsushi patent applicant Michio Jinno agent Patent attorney Toru Tanabe

Claims (1)

[Claims] Includes asphalt concrete waste and cement concrete waste! A long and narrow conveying device is provided in the pavement waste conveying path for receiving the packing waste at one end and transferring it to the other end, and the paving waste conveyed by the conveying device is heated and softened during the conveyance. A pavement waste treatment device comprising: a heating means such as a water sprinkling narrow path, and a #71 position for transferring the pavement waste heated by the heating means from the conveying device to the vibrating sieve.