JP2632258B2 - Storage device for 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 an apparatus for storing asphalt pavement waste material 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 occupation area, especially in urban areas, where there is no space for stacking waste materials, and it is not desirable from the viewpoint of aesthetics.

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

[0005]

According to the present invention, in order to achieve the above object, a silo body having a waste material inlet at the top and an open bottom is installed, and a pit is provided below the silo body. The pit extends to the outside of the silo main body so that waste materials pushed out from the silo main body can be taken out, and a watering nozzle is provided on a ceiling portion of the silo main body.

[0006]

According to the present invention, when waste material crushed to an appropriate size is thrown in from the inlet at the top of the silo body, the bottom of the silo body is opened, and a part of the waste material is stored in a state where it flows into the pit. Is done. During storage of waste material, water is continuously or intermittently sprayed from the water spray nozzle on the silo main unit, and the waste material in the silo main unit is stored in a wet state, and the water is stored in the pit. deep. As a result, the waste material reduces the stickiness of the asphalt due to the presence of water, thereby reducing the sticking of the waste material particles.Furthermore, in the pits, the buoyancy of the water reduces the consolidation due to the self-weight of the waste material. Can be stored. The removal of the waste material is performed by scooping up the waste material in the pit using a backhoe or the like.

[0007]

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

Reference numeral 1 denotes a silo main body of a waste material storage device for storing waste materials to be recycled. A waste material inlet 2 is provided on an upper ceiling surface of the silo main body 1, and a bucket elevator (not shown) and the like are provided. The waste material is supplied by the transfer device of (1). The bottom surface of the silo main body 1 is installed on the ground in an open state without a bottom plate. An appropriate number of watering nozzles 3 are arranged on the ceiling of the silo body 1.

A pit 4 is formed by excavating the ground at the bottom of the silo body 1. The pit 4 is formed by inclining a portion serving as a bottom surface of the silo body 1 to form an inclined portion 4a. The pit 4 is extended to the outside of the silo body so that waste materials pushed out along the inclined portion 4a can be taken out by the backhoe 5. A waste material take-out part 4b is formed. The pit 4 has a watertight structure so that water can be stored.

Reference numeral 6 denotes a water supply pump provided near the waste material take-out section 4b. The suction side of the water supply pump 6 is connected to a pipe 7 to suck up water stored in the pit 4. A pipe 8 is connected to the discharge side of the water supply pump 6 and connected to the watering nozzle 3. Further, a pipe 9 is connected to the discharge side of the water supply pump 6, and the tip of the pipe 9 faces the inclined part 4a of the pit 4, so that water flows through the inclined part 4a to circulate.

When storing waste materials, first, tap water is supplied into the pit 4 to set an appropriate water level.
The waste material generated at the construction site is transported by a dump truck and transported into the factory, where the primary crusher (not shown)
To reduce lump of waste materials of about 1000 mm
Crush to a size of about 0 to 200 mm. The primary crushed waste material is lifted up to the upper part of the silo main body 1 by a bucket elevator (not shown), and is put into the silo main body 1 through the waste material inlet 2. At the time of this waste material introduction, the water supply pump 6
Is driven to spray water from the watering nozzle 3, and the surface of the waste material to be charged is made wet with water. The initial waste material put into the silo falls into the pit 4, is pushed out along the inclined portion 4a, flows toward the waste material take-out portion 4b, and is stored in a submerged state. When the pit 4 is full of waste material, the waste material that is thrown in one after another is accumulated in the silo main body 1 and stored. When the input of the waste material is completed and the waste material is stored in the silo for a long period of time, the water supply pump 6 is driven continuously or intermittently to spray water from the watering nozzle 3, and the surface of the waste material in the silo main body 1. Is always kept wet with water. When the waste material is stored in a state of being wetted with water in this way, the adhesiveness of the asphalt attached to the surface of the waste material is weakened, and the sticking of the waste material particles can be reduced. Also, if the waste material is stored in the pit 4 while being submerged in water, the buoyancy of the water can reduce the consolidation of the waste material due to its own weight. Waste materials containing asphalt having a property can be stored well.

To take out the stored waste material, the pit 4 is scooped up by the backhoe 5 from the opened waste material take-out portion 4b. When the amount of the waste material in the waste material take-out section 4b decreases due to the removal of the waste material, the waste material flows into the waste material take-out section 4b due to the weight of the waste material stored in the silo main body 1. The waste material picked up by the backhoe 5 is transported to a secondary crushing device (not shown), and crushed to a particle size of about 20 mm or less by the secondary crushing device. When this waste material is scooped up by the backhoe 5, a certain amount of water is drained off, and the material having a particle size of about 150 mm is further crushed to about 20 mm or less. Is practically acceptable. The waste material crushed by the secondary crusher is sieved according to particle size, stored in a waste material hopper, and regenerated as asphalt mixture.

In the embodiment, an example is shown in which one silo body 1 is installed, but a plurality of silo bodies may be installed and waste materials may be stored for each type. In addition, the pit 4 can be provided on the ground by concrete without excavating the ground.
Further, other waste material removing means may be used instead of the backhoe 5.

[0014]

As described above, according to the present invention, the bottom of the silo body 1 is opened and a pit 4 is provided below the same, and water is sprayed from the water spray nozzle 3 on the ceiling of the silo body 1 to waste material. The surface of the pit 4 is wetted and the waste material in the pit 4 is stored in a state of being immersed in water, so that the presence of water weakens the asphalt adhesion and reduces the sticking of the waste material particles. Due to the buoyancy of water, the consolidation due to the weight of the waste material is also reduced and it does not become a large lump, the waste material can be sufficiently stored even in a vertical storage silo, space saving can be achieved, and it is also aesthetically pleasing It will be.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Silo main body 3 ... Sprinkling nozzle 4 ... Pit 4a ... Inclined part 4b ... Waste material removal part 6 ... Water supply pump

Claims (1)

(57) [Claims] A silo body having a waste material inlet at an upper portion and an open bottom surface is installed, and a pit is provided below the silo body, and the pit is provided with a silo so that waste material pushed out of the silo body can be taken out. A storage device for asphalt pavement waste material, which extends to the outside of the main body and has a watering nozzle provided on a ceiling of a silo main body.