JP2632254B2 - Method and apparatus for storing asphalt pavement waste - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for storing asphalt pavement waste to be recycled.

[0002]

2. Description of the Related Art Asphalt pavement waste material (hereinafter referred to as "waste material") excavated by road construction and the like has come to be recycled by mixing it in a proper amount in a new asphalt mixture. However, waste materials excavated from the construction site have the property of sticking to each other due to their own weight and solidifying when put into storage silos, etc. At present, they are placed in a pile.

[0003]

However, stacking waste materials on the factory premises requires a large area, and especially in urban areas, there is no space for stacking waste materials, and this is not aesthetically pleasing.

[0004] In view of the above, it is an object of the present invention to enable waste materials to be stored in storage silos instead of being piled up on a factory site.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention crushes a lump of waste material into lumps of an appropriate size that can be transported by a primary crushing device, and transfers the crushed waste material by a vertical transport device. The waste material is lifted and carried into a waste material storage silo in which water is stored, and the waste material is stored in the waste material storage silo soaked in water.

[0006]

According to the present invention, a lump of waste material brought in from a construction site is roughly crushed by a primary crusher to an appropriate size capable of being carried into a waste material storage silo, for example, about 150 mm.
The crushed waste material is stored in a storage silo storing water. The buoyancy of the water reduces the consolidation of the waste material due to its own weight, and the presence of water reduces the asphalt adhesion and reduces the sticking of the waste material particles. Blockage is prevented, which allows waste material to be stored in storage silos.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a primary crusher for roughly crushing waste materials generated during road construction and the like, and has a suitable size, for example, about 150 mm, capable of transporting a large lump of waste material carried by the dump truck 2 by the transport device. Crush to size. Downstream of the primary crusher 1, a vertical waste storage silo 3 for storing the primary crushed waste is disposed. This waste material storage silo 3 has a material input port 4 at the top,
A material outlet 5 having a gate mechanism (not shown) is provided at a lower portion.
Is a cylindrical storage container provided with
And a water distribution pipe (not shown) is provided at an appropriate position below. The waste material storage silo 3 has a watertight structure capable of storing water therein.

Reference numeral 7 denotes a bucket elevator, which is a vertical transport device for lifting the material into the waste material storage silo 3, and the waste material crushed by the primary crushing device 1 to an appropriately large particle size is transferred to the bucket elevator 7 by the conveyor 8. The waste material is lifted by the bucket 9 which moves and reciprocates up and down, and is thrown into the silo from the material inlet 4 above the storage silo 3.

A conveyor 10 for drawing out waste material is disposed below the material discharge port 5 of the waste material storage silo 3, and the conveyor 10 is sealed by a casing 11 so as not to leak water to a bucket elevator 12 as a transfer device. Connected.

Water in the waste material storage silo 3 enters the bucket elevator 12 and its water level becomes the same level as the water level of the waste material storage silo 3, so that the bucket elevator 12 has a watertight structure that does not leak. The bucket 13 has a structure capable of draining water. For example, as shown in FIG. 2, a plurality of drain holes 14 are formed in the bucket 13, the bucket 13 is formed in a lattice shape as shown in FIG. 3, and the bucket 13 is formed by wire mesh as shown in FIG. I do.

Reference numeral 15 denotes a secondary crushing device for further crushing the waste material crushed by the primary crushing device 1, and the waste material conveyed from the bucket elevator 12 is conveyed by a conveyor 16.
And the waste material of about 150 mm is crushed to about 20 mm or less. The crushed waste material is supplied to a sieving device 18 via a conveyor 17 and has a particle size of 20 mm or more, 13 to 20 mm, 5 to 13 mm, and 5 m.
m or less. Waste materials having a particle diameter of 20 mm or more are passed through the conveyors 19 and 20 to the secondary crusher 1.
The waste material having a size of less than 20 mm is sent back to a predetermined waste material hopper by each of the conveyors 21, 22 and 23 and stored for each particle size, and is discharged from a desired waste material hopper as needed. used.

When storing waste material, water is first supplied from the water injection pipe 6 of the waste material storage silo 3 to keep the water level at a suitable level. And dump truck 2 from the construction site
The waste material brought in by the above is charged into the primary crushing device 1 and the primary crushing device 1 crushes the waste material having a size of about 1000 mm into a size of about 150 mm. The primary crushed waste material is conveyed to a bucket elevator 7 via a conveyor 8, the waste material is lifted upward by a bucket 9 and put into a waste material storage silo 3, and the waste material is stored in water stored in the waste material storage silo 3. Submerge and store. When waste materials are stored in water in this way, the buoyancy of the water can reduce the consolidation due to the weight of the waste materials, and the presence of water can reduce the asphalt adhesiveness and reduce the sticking of the waste material particles. Also, the waste material containing the asphalt component having tackiness can be well stored in the storage silo 3 without the waste material adhering to each other to form a large mass and closing the storage silo.

In response to a request for the production of the asphalt mixture, the waste materials are discharged from the waste material storage silo 3, transferred one after another to the conveyor 10 and the bucket elevator 12, and conveyed to the secondary crusher 15. In the bucket elevator 12, the water level is almost the same as the water level of the waste material storage silo 3, and when the bucket 13 rises upward and comes out of the water surface, water falls from the drain hole 14 of the bucket 13 and drains. Waste materials that have been drained and drained
5 At this time, a certain amount of water adheres to the waste material. However, since the secondary crusher 15 crushes the material having a particle size of about 150 mm to about 20 mm or less, its surface area increases and adheres to each particle. The amount of water generated is of a level that does not cause any problem in practical use. The waste material crushed by the secondary crushing device 15 is stored according to particle size and is regenerated as asphalt mixture.

In the embodiment, the waste material storage silo 3
Although the example where one was installed was shown, a plurality may be installed and waste materials may be stored for each type.

[0016]

As described above, according to the present invention, a lump of waste material is crushed to an appropriately sized particle size that can be transported by the primary crusher, and the crushed waste material is converted into water in the waste material storage silo 3. It is stored in a immersed state.The buoyancy of water reduces the consolidation due to the weight of the waste material, and the presence of water weakens the asphalt adhesion and reduces the sticking of the waste material particles. As a result, the waste material storage silo 3 can be stored without clogging, the space can be saved, and the aesthetic appearance is also preferable.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an overall configuration of a storage device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a bucket of the bucket elevator.

FIG. 3 is a perspective view showing another example of the above bucket.

FIG. 4 is a perspective view showing still another example of the above bucket.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Primary crushing apparatus 3 ... Waste material storage silo 4 ... Material input port 5 ... Material discharge port 7 ... Bucket elevator (vertical transport apparatus) 12 ... Bucket elevator (transport apparatus) 13 ... Bucket 14 ... Drain hole (draining means) 15 ... Secondary crusher 18: Sieving device

Claims (2)

(57) [Claims] 1. A crushed waste material is crushed to a suitably sized lump that can be transported by a primary crushing device, and the crushed waste material is lifted up by a vertical transport device and carried into a waste material storage silo storing water. A storage method for asphalt pavement waste material, wherein the waste material is stored in a storage silo in a state of being immersed in water. 2. A primary crushing device for crushing waste asphalt pavement to an appropriately sized lump capable of being transported, a vertical transport device for lifting and transporting the crushed waste material upward, and a material input port at an upper portion, A waste material storage silo for storing the waste material carried by the vertical transport device in a state of being immersed in water, and a draining means for transporting the waste material stored in the waste material storage silo to the secondary crushing device. A storage device for waste asphalt pavement, comprising a transport device.