JPH0152522B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for recycling road waste materials generated during various construction works such as gas pipeline construction, water supply and sewerage construction, and electrical construction.

(Conventional technology and problems) Road waste is waste generated from replacing asphalt and concrete pavement, etc., and mainly consists of pavement waste, but may also contain some roadbed material (hereinafter referred to as ascon-based waste). and waste materials generated from construction work related to the burying of road-occupying objects such as gas pipes, most of which are on the roadbed, but are broadly classified into the above-mentioned pavement waste material and waste material including roadbed material (hereinafter referred to as excavated soil-based waste material). Ru.

In the past, it was considered impossible to process Ascon in an excavated soil plant or excavated soil in an Ascon plant due to the differences in their properties and processing methods between Ascon-based waste and excavated soil-based waste. .
For this reason, in the past, two plants were installed and each was processed separately, which was extremely uneconomical in all respects. The present invention was achieved as a result of intensive research to solve this problem. That is, the present invention is designed to recycle the above-mentioned ascon-based waste material and excavated soil-based waste material in one apparatus, and the details will be described below with reference to the drawings.

(Means for solving the problem) In Fig. 1, A shows an excavated soil system, B shows an ascon system, and C shows an excavated soil ascon common system.
The present invention basically consists of these three systems. First, the excavated soil system A includes an excavated soil main introduction section 1 and an ascon main introduction section 4, and passes from the excavated soil main introduction section 1 under the first grizzly 2 to obtain excavated soil and roadbed material, It is configured in combination with a system for guiding these to the crushing and mixing device 3, and a system for obtaining a large lump of ascon on the first grizzly 2 and guiding it to the ascon main body introducing section 4. Ascon system B obtains asphalt concrete paving material on the second grizzly 2' of Ascon main introduction part 4,
It consists of a system that leads this to the crushing and mixing device 3, and a configuration that passes under the second grizzly to obtain recycled roadbed material, and further includes a common excavated soil ascon system C.
consists of a configuration in which the crushing and mixing device 3, the mixing device 5 and the classifier 6 are connected in series, and the top of the classifier 6 is connected to the crushing and mixing device 3 via the crushing device 7. In the case of main waste material, improved soil is obtained using the excavated soil system A and the common system C, and in the case of Ascon main waste material, recycled aggregate is obtained using the Ascon system and the common system C. It is configured so that it can be obtained. Note that reference numeral 8 is a bypass, and when producing recycled aggregate, it may be better to introduce it directly from the crushing device 3 into the classification system 6 depending on the particle size.
In this case, the configuration is such that it does not pass through the mixing device 5.

(Example and operation) The excavated soil ascon common system C processes raw materials with greatly different properties and processing methods, such as excavated soil-based waste material and ascon-based waste material, so the equipment used in the system is as follows. Something like this is desirable.

First, the crushing and mixing device 3 is required to have both the functions of mixing excavated soil and crushing ascon. Regarding excavated soil, the primary purpose is to mix stabilizing materials and recovery aids, and even if the soil is highly water-containing or highly viscous, there will be no problems such as soil adhesion and growth, and at the same time, double rolls can also crush ascon. Craftsier is preferred. Furthermore, the mixing device 5 is mainly used for crushing soil clods and secondary mixing when processing excavated soil.
It is required to have the ability to crush clay lumps that do not break even after passing through the crushing and mixing device 3, and to sufficiently disperse the stabilizer. An impact-type crushing mixer is desirable so that this treatment can be carried out on clay soil without any trouble and can also be used for crushing ascon.

The crushing device 7 is required to have a function of crushing the sieved material when processing excavated soil, which has a large stone content, and an appropriate crushing device such as a crusher with a grinding plate may be selected. Further, the classification system 6 connected to the common system C is composed of, for example, a vibrating sieve, and is used to determine the particle size (particle size distribution) of the improved soil and recycled aggregate as products.
There are various combinations depending on the particle size, for example, improved soil...0 to 13 mm, recycled aggregate...0 to 5 mm, etc.
Fig. 2 shows an example of a combination when mm, B...5 to 13 mm, and C...13 to 20 mm. When making recycled aggregate, it may be better not to pass it through the mixing device 5 depending on the particle size, but in this case, the bypass 8
directly from the crushing mixer 3 to the classification system 6.
It would be better to introduce it to

In the above configuration, when processing excavated soil-based waste, the excavated soil system A and excavated soil Ascon common system C are used to obtain improved soil, and when processing Ascon-based waste, the Ascon system B and the excavated soil Ascon common system C are used to obtain recycled aggregate and recycled roadbed material. First, the treatment of excavated soil will be explained. Most of the excavated soil waste material used as a raw material is roadbed soil, and includes pavement waste material and roadbed material.
When this excavated soil-based waste material is introduced from the excavated soil introducing section 1 into the first grizzly 2, the large ascon lumps 9 are sorted into the system to the ascon introducing section 4, and at the same time, the raw material at the bottom of the first grizzly 2 Excavated soil and roadbed material will accumulate in the hopper 10. This is quantitatively cut out using a quantitative feeder 11, a certain amount of stabilizer is added from a stabilizer supply section 12 along the way, and the stabilizer is supplied to a crushing and mixing device 3 together with a recovery aid described later. In the crushing and mixing device 3, it is primarily mixed with the stabilizing material and the recovery aid, and then sent to the mixing device 5. The excavated soil that has been sufficiently crushed and mixed in the mixing device 5 is classified into the classification system 6.
It is classified according to As described above, the classification system 6 is composed of a vibrating sieve, and the sieve material becomes improved soil for the product. The sieved material is mainly composed of stones such as roadbed material, and is finely crushed by a crushing device 7 and sent to a crushing and mixing device 3 as a recovery auxiliary material. The recovered auxiliary material is finely crushed stone and has a low moisture content and is in the form of string granules, so it is possible to reduce the moisture content of the raw material supplied to the crushing and mixing device 3, thereby increasing the bearing capacity of the improved soil product. In addition to increasing this, it also has the effect of reducing adhesion of raw materials in the crushing and mixing device 3 and facilitating handling in the device 3 and beyond. Furthermore, since the same supporting force can be obtained with a smaller amount of stabilizer than when no recovery aid is used, there is an excellent effect of reducing the cost of improvement.

Next, the treatment of Ascon-based waste material will be explained. The Ascon-based waste material as a raw material is mainly composed of asphalt concrete paving material and contains a certain amount of roadbed material. When such ascon-based waste material (of course, this ascon-based waste material also includes large ascon blocks 9 that have been sorted out during the treatment of excavated soil) is supplied from the ascon introduction section 4 to the second grizzly 2'. As shown in the figure, recycled roadbed material is obtained under the grizzly 2'. The top of the grizzly 2' consists only of asphalt concrete paving material, which is sent to a crushing and mixing device 3 for primary crushing and then to a mixing device 5 for secondary crushing. Thereafter, the recycled aggregate is classified through a classification system 6 into two or three particle size ranges, for example, the ranges A, B, and C in the figure. In classification system 6,
The sieved material is finely crushed by the crushing device 7 and introduced into the crushing and mixing device 3. In the above case, depending on the desired particle size, there are cases where the particles are passed through the mixing device 5, and cases where the particles are passed through the bypass 8 without passing through the mixing device 5. In either case, the particles are sent to the classifier 6 and classified into A, B, and C to obtain a product with a desired particle size. The sieved material from the classifier 6 is finely crushed by the crusher 7 and sent to the crusher and mixer 3 .

(Effects of the Invention) As described above, the present invention consists of an excavated soil system, an ascon system, and a common excavated soil ascon system, and
The common system is structured so that it can be used in exactly the same way for excavated soil-based waste material and ascon material-based waste material, and also takes advantage of the product and processing characteristics of both types of waste material. This provides an excellent device that can perform regeneration processing in a way that maximizes its use.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the entire system, and FIG. 2 is an explanatory diagram showing an example of the classification system. Code A: excavated soil system, B: ascon system,
C... Excavated soil Ascon common system, 1... Excavated soil introducing part, 2... First grizzly, 2'... Second grizzly, 3... Crushing mixer, 4... Ascon introducing part, 5... ...mixing device, 6...classification system, 7...
Crushing device, 8...Bypass, 9...Ascon large lump, 10...Raw material hopper, 11...Quantitative feeder, 12...Stabilizer supply section.

Claims (1)

[Scope of Claims] 1. A device comprising an excavated soil main introduction part and an ascon main main introduction part, and obtains excavated soil and roadbed material from the excavated soil main introduction part through a first grizzly, and crushes and mixes them. An excavated soil system A is constructed by combining a system for leading to the introduction part of the ascon, and a system for obtaining a large mass of ascon on the first grizzly and guiding it to the ascon main introduction part. However, on the second grizzly of the ascon main body introduction part,
A system for obtaining asphalt concrete paving material and guiding it to the crushing and mixing device, and a system for passing it under the second grizzly to obtain recycled roadbed material constitute an ascon system B, and the crushing and mixing device,
A mixing device and a classification device are connected in series, and a system in which the classification device is connected to the crushing and mixing device via a crushing device is configured as an excavated soil ascon common system C, and in the case of excavated soil-based waste, Excavated soil and Ascon recycling processing equipment configured to obtain improved soil using the excavated soil system and the common system, and to obtain recycled aggregate using the Ascon system and the common system in the case of Ascon-based waste material. . 2.Equipped with an excavated soil main introduction part and an ascon main main introduction part, for obtaining excavated soil and roadbed material from the excavated soil main introduction part and passing under the first grizzly, and guiding them to the introduction part of the crushing and mixing device. system and a system for obtaining a large mass of ascon on the first grizzly and guiding it to the ascon main introduction part constitute excavated soil system A, and the ascon main introduction part A system for obtaining asphalt concrete paving material in the second grizzly of the section and guiding it to the crushing and mixing device, and a system for obtaining recycled roadbed material through the second grizzly, together constitute ascon system B. The crushing and mixing device, the mixing device and the classification device are connected in series, a bypass is provided between the outlet of the crushing and mixing device and the inlet of the classification device, and the crushing and mixing device is connected to the crushing and mixing device via the crushing device over the classification device. The connected systems are configured into an excavated soil ascon common system C, and in the case of excavated soil-based waste, the excavated soil system and the common system are used to obtain improved soil, and in the case of ascon-based waste, ascon An excavated soil ascon regeneration processing device configured to obtain recycled aggregate using a system and a common system.