JPH0355606Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for producing an asphalt mixture that is a road paving material, and particularly relates to an apparatus that can also heat and regenerate asphalt pavement waste material.

[Prior art] Asphalt pavement waste material (hereinafter referred to as "waste material") excavated by road construction etc. has been heated and recycled and used as asphalt composite material. Recycling plants are rarely installed independently on factory grounds, and are usually installed alongside asphalt plants that produce new asphalt mixtures.

[Problems to be solved by the invention] However, the amount of waste material processed in the recycling plant is very small compared to the amount of mixed material produced in the asphalt plant, and having both plants separately poses a large economic burden. Considering this economical aspect, it is desirable to have a device that can heat both new aggregate and waste materials with a single dryer.

[Means for Solving the Problems] In view of the above-mentioned points, the present invention has been proposed in order to solve the above-mentioned problems by providing a burner on one end of the aggregate drum which is rotatably supported at an angle on the hot hopper side. The aggregate supply section is arranged with an aggregate discharge section on the cold hopper side connected to the exhaust flue at the other end, and the waste material drum is inserted from the cold hopper side of the aggregate drum, fixed to the aggregate drum, and inserted. A waste material supply passage is arranged at the tip of the waste material drum in a direction perpendicular to the drum axis, and the waste material supply passage is passed through the aggregate drum wall and opened to an annular passage provided around the outer periphery of the aggregate drum. A waste material supply chute is disposed above the shaped passage, and a through hole of an appropriate size is bored in a plate at the tip of the waste material drum forming the waste material supply passage to provide an inlet for hot air. Another object of the present invention is to provide an asphalt mixture manufacturing apparatus, characterized in that an exhaust flue connected to the cold hopper side of the waste material discharge portion of the waste material drum is connected to the exhaust flue of the aggregate drum.

[Function] According to the present invention, when heating new aggregate and waste material at the same time, the aggregate drum is rotated and hot air is sent into the aggregate drum from a burner disposed at one end, while the aggregate drum is heated simultaneously. New aggregate is supplied in parallel flow to
The aggregate is heated to the desired temperature while rolling down the aggregate drum.

In addition, part of the hot air passing through the aggregate drum is sent into the waste drum from the hot air inlet of the waste drum, which rotates together with the aggregate drum, while a waste material supply device located approximately in the middle of the aggregate drum is used. Waste material is supplied from the chute, fed into the waste material drum via the waste material supply passage, heated while rolling and flowing down the waste material drum, and the heated waste material is discharged from the cold hopper side of the waste material drum. The exhaust gas that has passed through the waste material drum is led out from the cold hopper of the waste material drum to the exhaust flue, where it joins with the exhaust gas led out from the aggregate drum and flows downstream.

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

1 is an aggregate drum for heating new aggregate;
A cylindrical drum having a large number of raking blades 2 around its inner periphery is tilted and rotatably supported by support rollers 3, and is rotated at a predetermined speed by a drive device (not shown). Reference numeral 5 denotes a burner disposed in the hot hopper 4 of the aggregate drum 1. Hot air is sent from the burner 5 into the aggregate drum 1, and new bone is collected from the aggregate hopper 6, which stores new aggregate according to various particle sizes. The material is supplied from the hot hopper 4 side of the aggregate drum 1 via the conveyor 7, and the new aggregate is raised to a desired temperature while being rolled down in the aggregate drum 1 while being scraped up by the scraping blades 2. Heat and aggregate drum 1
The aggregate is discharged from the aggregate discharge port 9 at the bottom of the cold hopper 8. The combustion amount of the burner 5 is controlled by detecting the temperature of the new aggregate heated by a temperature sensor disposed at the aggregate discharge port 9, and controlling the combustion amount to reach a preset aggregate temperature. .

Reference numeral 10 is a waste material drum for heating waste material, and a cylindrical drum having a large number of scraping blades 11 arranged around the inner periphery is inserted and fixed into the aggregate drum 1.
It is adapted to rotate together with the aggregate drum 1.
A waste material supply passage 12 is arranged at the tip of the waste material drum 10 in a direction perpendicular to the drum axis. It opens into a circumferential annular passage 13, and a waste material supply chute 14 is disposed above the annular passage 13. The waste material supply passage 12
A through hole of an appropriate size is bored in the plate body 15 at the tip of the waste material drum 10 that forms the drum, and a cylindrical body 16 inclined in the drum axis direction is provided around the through hole as necessary. A hot air inlet 17 is formed to introduce a part of the hot air passing through the aggregate drum 1 into the waste material drum 10, while the waste material is passed from the waste material hopper 18 via the waste material conveyor 19 and from the waste material supply chute 14 through the waste material supply passage 12. The waste material is supplied into the waste material drum 10, heated to a desired temperature while rolling down while being scraped up by the scraping blades 11, and discharged from the waste material discharge port 21 at the bottom of the cold hopper 20 provided at the other end of the waste material drum 10. are doing. An exhaust flue 22 is connected to the upper part of the cold hopper 20, and the exhaust flue 22 joins an exhaust flue 23 connected to the upper part of the cold hopper 8 of the aggregate drum 1, and the exhaust flue 22 is connected to the upper part of the cold hopper 8 of the aggregate drum 1. The exhaust gas that has passed through the aggregate drum 1 joins the gas flow that has passed through the aggregate drum 1, passes through a downstream dust collector 24 and an exhaust fan (not shown), and is discharged into the atmosphere from a chimney. 25, 26, and 27 are dampers for adjusting the air volume of both drums. Waste material drum 1
A temperature sensor for detecting the temperature of the waste material is disposed at the waste material discharge port 21 of No. 0, and feedback is provided to the opening amount control of the air volume adjustment damper 26 that adjusts the amount of hot air introduced into the waste material drum 10.

Therefore, when heating new aggregate and waste material at the same time, the burner 5 is combusted and the damper 25,
The hot air is sent into the aggregate drum 1 while adjusting the opening degree of the damper 27, and a part of the hot air is introduced into the waste material drum 10 by adjusting the damper 26. supplies waste material, heats it while rolling down each drum, detects the temperature of new aggregate discharged from the aggregate discharge port 9 with a temperature sensor, and detects the temperature of the new aggregate discharged from the waste material discharge port 21. The temperature of burner 5 is detected by the temperature sensor and
The temperature of each aggregate is controlled to a desired temperature by feeding back to the combustion amount control of the damper 26 and the opening amount control of the damper 26.

The heated new aggregate is transported to the main plant, where it is sieved into various particle sizes and stored in storage bins.
The heated waste material is also transported to the plant main body and stored in the waste material storage bin.

[Effects of the invention] As described above, the apparatus of the present invention can heat both new aggregate and waste material in a single drum, and has an economical advantage.

[Brief explanation of drawings]

FIG. 1 is a schematic partial cross-sectional view of one embodiment of the device of the present invention, and FIG. 2 is an enlarged vertical cross-sectional view taken along the line A--A in FIG. 1... Aggregate drum, 4... Hot hoppa, 5...
... Burner, 6 ... Aggregate hopper, 8 ... Cold hopper, 9 ... Aggregate discharge port, 10 ... Waste material drum,
12... Waste material supply passage, 13... Annular passage, 14
...Waste material supply chute, 17...Hot air inlet, 1
8...Waste material hopper, 20...Cold hopper, 2
1... Waste material discharge port, 22, 23... Exhaust flue.

Claims (1)

[Scope of utility model registration request] An aggregate supply section is arranged on the hot hopper side where the burner is arranged at one end of the aggregate drum which is rotatably supported in an inclined manner, and an aggregate discharge section is arranged on the cold hopper side at the other end where the exhaust flue is connected. A waste material drum is inserted from the cold hopper side of the aggregate drum and fixed to the aggregate drum, and a waste material supply passage is arranged at the tip of the inserted waste material drum in a direction perpendicular to the drum axis,
The waste material supply passage is passed through the aggregate drum wall to open an annular passage provided around the outer periphery of the aggregate drum, and a waste material supply chute is disposed above the annular passage, and the waste material forming the waste material supply passage is A through hole of an appropriate size is bored in the plate at the tip of the drum to provide an inlet for hot air, and an exhaust flue connected to the cold hopper side of the waste material discharge section of the waste material drum is used to collect the exhaust smoke from the aggregate drum. An asphalt mixture manufacturing device that is characterized by being connected to a road.