JPS6140904A - Method and apparatus for regenerating waste asphalt concrete - 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 method and apparatus for recycling waste asphalt concrete. Asphalt concrete, which is used as a road paving material, has become severely damaged due to the recent increase in traffic volume, and repairs have become frequent.

Each time the paving material is used, it must be peeled off and disposed of as waste material. Research has been conducted on the recycling of such waste asphalt concrete, and recycling has been carried out by heating agitation and adding softeners, but since heating radiation is performed from the opposite direction to the supply of material, it is difficult to recycle waste asphalt concrete. Unlike asphalt,
1700 for recycled materials with binder attached to aggregate
While the binder is carbonized when it comes in contact with the flame tip, which reaches a temperature of ℃, the softener that is added at the same time is also thermally degraded, resulting in an unavoidable decline in the quality of the material. The present invention addresses this problem and aims to improve the quality of recycled materials according to their characteristics, improve the efficiency of radiant heat, and add an effective softener.

The present invention will be described in detail below with reference to the drawings.

Reference numeral 1 denotes a base, and a drum 2 is rotatably supported by support rollers 3. On the inner wall of drum 2 are early, middle,
Raking piece 41.4 with a shape adjusted for each final stage and transfer stage
2.43.44.45 are arranged, a material supply port 5 and a burner 6 are provided at the end of the initial side A, and a softener jetting lower and a discharge port 8 are provided at the end of the final side B. ing. 9 is a softener heat retention tank that maintains the softener at about 50 degrees Celsius, and a professional pump 11 that is linked to the reciprocating feeder 10.
As a result, the softener is supplied to the jetting lower opening at the tip of the additive pipe 13 inserted into the drum 2. Hydrolane (trade name) is usually used as a softening agent, but it is a highly viscous liquid and cannot be sprayed unless the temperature is maintained at about 50'C. Also, since it is necessary to add the hydrosoftener at a feed ratio of about 4 liters per ton of material, the feed rate can be adjusted by interlocking the reciprocating feeder 10 and the pro-pump 11 and changing the drive cycle of the feeder 10. This is what I did. The softener spouting lower has a plurality of openings facing downward at the tip of an additive pipe 13 that penetrates the smoke exhaust mechanism 16 and projects into the drum 2.

With the regeneration device configured as described above, ↓flour-12
Once supplied, the material is conveyed to the material supply port 5 by the belt conveyor 14 and supplied to the rotating drum 2. The rotary drum 2 is rotated by the drive mechanism 14, and the stage scraping pieces 41, 42, 43, 44, 45 arranged on the inner wall scrape up the material one by one and drop the material from the rotational drop in a screen shape to the discharge port 8. transport in the direction. This scraping and falling is divided into several stages and has different forms, such as first moving the burner flame through the wall and rotating the material, and then dropping the material onto the screen after the flame has reached a distance of 2m or more. The material is transferred from the A side to the B side in parallel to the heat injection direction of the burner. Therefore, the material is transferred in stages from the thermal injection base of the burner 6 in opposite directions, and is discharged while being heated and processed at an ambient temperature of about 600° C. while avoiding the direct flame of the burner flame. The present invention has changed the idea from the conventional method that could not be completely eliminated from the processing form of virgin asphalt, and in parallel conveyance, an ejection port is opened at a position opposite to the burner 6, and pressure is ejected from the opposite part to the material being transferred. It is designed to be added in the form of a spray. It is said that the optimum temperature for recycled material is 165°C, but according to the present invention, the softener can be added at a stage when the material temperature is approximately 165°C, when the recycling process is almost completed, and the heat of the softener can be reduced. Deterioration can be prevented.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is an explanatory diagram showing the entire reproduction device, Fig. 2 is an overall side view of the drum part,
Fig. 3 is a partially cutaway side view of the drum section, Fig. 4 is a sectional view taken along line A-A in Fig. 2, Fig. 5 is the same <B-B, and Fig. 6 is c-
c, Fig. 7 is a sectional view taken along D-D, Fig. 8 is a sectional view taken along E-E, Fig. 9
The figure is an enlarged side view of the softener supply section, and FIG. 10 is a detailed view of a part of the reciprocating feeder. 1~Base 2~Drum 3~Support roller 41.4
2.43.44.45 ~ Rake up piece 5 ~ Material feeder 6 ~
Burner 7 - Softener spout 8 - Discharge port 9 - Softener heat retention tank 10 - Reciprocating feeder 11 - Pro pump 12 - Homper 13 - Additive nozzle 114 - Belt conveyor 15 - Butane gas cylinder 16 - Smoke exhaust mechanism 17 - Drive Mechanism 18~Temperature sensor 19~Vaporizer 20~Silo patent applicant Hosoya
Procedural amendment written by one person other than Kenji (method) March 30, 1980 Kazuo Wakasugi, Commissioner of the Patent Office Indication of case 1 Patent application No. 2640 of 1989 2, title of invention Asphalt concrete KBs! and its “Itamon 3”
Person making the amendment 4 Agent Address: 103 Address: 4-6-6 Nihonbashi Honmachi, Chuo-ku, Tokyo March 7, 1980 (shipment date) March 27, 1980 7, ? ! Correct contents (1) The "title of the invention" in the description is corrected as follows. “Waste Asphalt Concrete Recycling Method and Apparatus” (2) “Claim (1)” of the specification is amended as follows: “Material is supplied from the heating burner installation side of the rotating drum, A method for recycling waste asphalt concrete characterized by heating and stirring while transferring the material in parallel toward the discharge port, and spraying a softener onto the material from the discharge port side.'' Procedural amendment September 5, 1985 Patent Office Director General Uga Michibu 1. Indication of the case Waste asphalt concrete recycling method and equipment 3. Person making the amendment Relationship to the case Patent applicant address 309 Hashie-cho, Isesaki City, Gunma Prefecture Name Details
Kenji Tani 4, Agent ■103 Address 4-6-6 Nihonbashi Honmachi, Chuo-ku, Tokyo (shipment date)
July 9, 1985 June 28, 1985 6. Description subject to amendment 7, contents of amendment As shown in the attached sheet, the "title of the invention" in the ill description is corrected as follows. “Waste Asphalt Concrete Recycling Method and Apparatus” (2) The “Claims” of the specification shall be amended as follows. Futakami Rejusou Sougo,”

Claims (2)

[Claims] (1) The material is supplied from the heating burner installation side of the rotating drum, heated and stirred while being transferred toward the discharge port in parallel with the burner radiation, and a softening agent is sprayed onto the material from the discharge port side. A method for recycling waste asphalt concrete. (2) A drum with scraping pieces arranged on the inner wall, a material supply port at one end and a material discharge port at the other end is rotatably supported on a base, and the drum is driven by a drive machine. A waste asphalt concrete recycling device characterized by having a heating burner on the material supply port side and a softening agent spout on the discharge port side.