JPH0416572B2 - - Google Patents

Description

Detailed Description of the Invention "Industrial Application Field" The present invention relates to an apparatus for recycling asphalt waste by heating and melting it, in particular, a rostol is disposed within a horizontally long rotating drum, and a flame is placed in the center of the rostol. It is equipped with a reflective disk, and while the flame from the burner device is directed toward the flame reflective disk and injected into the rotating drum, the asphalt waste material is introduced into the rotating drum from the front side, and is agitated as the rotating drum rotates. This relates to an asphalt waste recycling device that melts the asphalt waste material and transfers it to the rear side, passes through the rostle, and then discharges it from the discharge port.

"Prior art and its problems" The present applicant has developed this type of asphalt waste recycling device by installing flame swirling vanes on the flame reflecting disc as disclosed in Japanese Patent Application Laid-Open No. 61-21206. swirl and reflect the flames (and radiant heat),
A device with improved heat convection within the rotating drum has already been proposed.

The present invention aims to improve the heat convection caused by flame reflection and radiant heat, as well as the heating efficiency for asphalt waste material, and to further improve the regeneration ability than the conventional method.

``Means for Solving the Problems'' In the asphalt waste recycling apparatus of the present invention, in addition to the flame reflecting disk and the flame swirling blade of the rostre, there is also a flame reflector from the burner device at a position in front of the rostol in the middle of the rotating drum. A flame rotating reflector plate that rotates and reflects part of the flame is installed via a plurality of brackets. This flame swirling reflector is also provided with a plurality of flame swirling vanes, and these are spirally curved in the opposite direction to the curve direction of the flame swirling vanes of the rostre.

"Operation" If a flame swirling reflector is also provided in front of the rostre, part of the flame from the burner device will be reflected (including radiant heat) by this flame swirling reflector in front of the rostle. , and flow backwards forward while turning. In addition, the remaining flame (including radiant heat) that has passed through this flame swirling reflector is reflected by the flame reflecting disc of the rostre, and at the same time, it is swirled by the flame swirling vane, and the flame swivels between the rostle and the flame swirling reflector. Convection occurs between the flame swirling reflector as a vortex, and it also flows back toward the front of the flame swirling reflector, creating a state in which the flames directly reflected from the flame swirling reflector are chased. In this case, since the flame swirling vanes of the front flame swirling reflector and the flame counter-swirling vanes of the rear rostre are spirally curved in opposite directions,
The swirling directions of the flame vortices generated by these are opposite to each other, and when they merge, it becomes a very complex flow, and heat convection within the rotating drum is carried out quickly and effectively over the entire area. Therefore, asphalt waste material can be melted very efficiently.

"Example" Hereinafter, an example of the present invention will be described in detail based on the drawings.

As shown in Fig. 1 (side view), Fig. 2 (front view), Fig. 3 (rear view), and Fig. 4 (perspective view), the entire asphalt waste material recycling apparatus is installed on a machine base 1. , used either on the ground or mounted on the bed of a truck.

A horizontally long rotary drum 2 is supported horizontally on the machine base 1 as will be described later, and a hopper 4 is installed on the front side of the drum by a support 3. The rotating drum 2 is covered by a dome-shaped drum cover 2a installed on the machine stand 1 with a certain gap formed therebetween. A charging shutter 5 is integrally connected to the center of the lower side of the hopper 4, and the charging shutter 5 is inclined downward toward the front surface of the rotating drum 2, and a lower end opening 5a is connected to the front cover plate 6 of the rotating drum 2. It enters into the rotating drum 2 through the provided input port 7. In order to prevent the heat inside the rotating drum 2 from escaping from the input port 7, a plurality of parallel chains 8 are installed in front and rear insulating curtains in the input section of the rotary drum 2, that is, in the lower end opening 5a of the input shutter 5. 9 and 10 are swingably suspended, and the asphalt waste material introduced into the hopper 4 passes through the heat insulating curtains 9 and 10 at the front and rear of these curtains and enters the rotating drum 2 through the input port 7. Furthermore, a soundproof insulation layer 12 filled with a soundproof insulation material 11 is provided at the bottom of the input shutter 5 in order to insulate the heat from the rotating drum 2 and to soundproof the impact noise caused by the asphalt waste material.
is formed.

Note that the heat insulating curtains 9 and 10 are not limited to chains, and may be made of, for example, a plurality of metal plates connected by hinges.

A burner device 13 is installed on the machine base 1 below the input shutter 5 so that its front, rear, left, and right positions and inclinations can be adjusted as follows.

That is, the burner device 13 is
As shown in the figure, the slide table 1
By supporting it on slide table 6, it is mounted on slide table 16 so that its height and inclination can be adjusted. Moreover, this slide table 16 can freely slide on the floor plate 18 on the machine base 1 in front, back, left, and right by means of a plurality of ball wheels 17 attached to the lower surface of the slide table 16, so that the burner device 13 can be moved in any of the front, rear, left, and right directions. The position can also be adjusted freely.
As shown in FIG. 5, the burner device 13 has a spherical flange 19 provided on the outer periphery of its tip.
By engaging with the spherical ring 21 provided on the edge of the burner port 20 of the front cover plate 6 of the rotating drum 2, the flame is spherically bearing on the burner port 20, and the injection angle of the flame into the rotating drum 2 is adjusted. can be freely adjusted in either direction. After adjusting the burner device 13, the slide table 16 is fixed onto the floor plate 18 with a holding plate 22 and fixing bolts 23. If the fixation is released and the slide table 16 is slid, the burner device 13 can be easily pulled out from the burner port 20, making it easy to inspect and clean it. A nozzle pipe 24 that protrudes into the rotating drum 2 is attached to the tip of the burner device 13, and the flame from the burner device 13 is transmitted through this nozzle pipe 2.
4 into the rotating drum 2.

Furthermore, air is introduced into the rotating drum 2 from an air supply fan 26 via an air supply duct 25, as shown in FIGS. 1 and 2, to improve combustion performance within the rotating drum 2.

The rotating drum 2 is provided with a heat insulating coating layer 29 made of a heat insulating material 28 on the outer periphery of the drum body 27.
Further, in two places on the front and back of the outer periphery, as shown in FIG.
b and is fixed to the drum body 27 at a constant distance. Each of the front and rear rims 30 is mounted and supported on a pair of left and right support rollers 33 that are supported by a bearing stand 32 on the machine base 1, and each rim 30 is placed at a diagonal position on the left and right sides of the machine base 1. It is held between a pair of front and rear holding rollers 34 which are supported by bearings. Lubricating oil is circulated and supplied to the bearing portion of the support roller 33.

Therefore, the rotating drum 2 has two sets of supporting rollers 3.
3, and is rotatably supported by two pairs of clamping rollers 34, and its back and forth movement is regulated by two sets of clamping rollers 34.

The rim 30 has better insulation properties with the rotating drum 2 and protects the support roller 33 and the clamping roller 3 from high heat.
4, a hollow portion 35 is formed.
Between the outer ring 33a and the inner ring 33b of the support roller 33, in order to make the support roller 33 itself function as a fan, a large number of air blowing fins 36 are fixed on both sides, and the holding roller 34 also has air blowing fins 37 on the lower side. has been established. This nipping roller 34 is slightly obliquely supported on the machine base 1 by its bearing base 38 .

A large sprocket wheel 39 is fixed to the front end of the drum body 27, as shown in FIG.
As shown in Fig. 2, the large sprocket wheel 3
9 and a small driving sprocket wheel 41 of a drum rotation motor (geared motor) 40 installed on the machine base 1, a chain 42 is routed, and the rotating drum 2 is rotated by this motor 40. It is rotated at a constant speed in a certain direction. Note that the chain 42 is always tensioned by a tensioning roller 43 to which a spring force is applied.

When the rotating drum 2 rotates, the support roller 33 and the clamping roller 34 also move their air blowing fins 36, 3.
7 rotates while blowing air, the contact portion between these rollers and the rim 30 is cooled, and the supporting roller 33
and the pinching roller 34 is protected from high heat,
The rotation of the rotating drum 2 is performed smoothly, and the life of the support roller 33 and the nipping roller 34 is also extended.

As shown in FIG. 1, the inner peripheral surface of the drum body 27 is provided with a large number of cone-shaped crushing protrusions 44, a plurality of bar-shaped guide ribs 45 with a triangular cross section, and a large number of plate-shaped stirring and feeding blades 46. are arranged from the front end to the rear end. The large number of crushing protrusions 41 and stirring and feeding blades 46 each form a drum main body 2 as a whole.
They are arranged in a spiral toward the rear end of 7, forming a plurality of spiral rows. Each of the crushing protrusions 44 is fixed toward the center of the drum body 27, and the stirring and feeding blades 46 are fixed so as to be inclined in a direction opposite to the rotational direction of the rotary drum 2 with respect to the axis of the drum body 27. There is. The plurality of rod-shaped guide ribs 45 are fixed in parallel to the axis of the drum body 27, and their rear ends are inclined in a direction opposite to the rotation direction of the rotary drum 2.

Therefore, asphalt waste material charged into the rotary drum 2 as described above is crushed by the crushing projections 44 as the rotary drum 2 rotates, and at the same time is crushed by the stirring feed blades 46 and the rod-shaped guide ribs 45. While being stirred and melted by the flame from the burner device 13, the
It is pushed backward along the rod-shaped guide rib 45, and also pushed backward by the crushing protrusion 44, and further pushed backward by the newly thrown asphalt waste material.

Note that if the upper edge of the stirring and feeding blade 46 is made serrated as shown in FIG. 7A or B, the asphalt waste material can also be crushed by this stirring and feeding blade.

A rotor 47 having the following structure is attached to the rear end of the drum body 27.

As shown in FIGS. 8 and 9, the rostre 47 has four fan-shaped lattice plates 48 connected to each other by a joint plate 49 so as to form an annular shape and form a quadrangular pyramid expanding toward the front. , front and rear double flame reflecting disks 51 and 52 are attached to a central circular notch 50 surrounded by these lattice plates 48. The lattice plate 48 forms a large number of lattice openings 55 by concentric arcuate ribs 53 and intermediate ribs 54 therebetween, and these lattice openings 55 have a wider width on the outer periphery than on the inner periphery. It's getting bigger. A large number of prismatic crushing and stirring protrusions 56 are fixed to the front side of the arc-shaped rib 53 toward the front side, and the inner circumferential surface of the arc-shaped rib 53 on the inner circumferential edge and the outer circumferential surface of the circular arc-shaped rib 53 on the outer circumferential edge are connected to each other. Auxiliary projections 57 and 58 are fixed to the inside and outside of the arc, respectively.

The flame reflecting disk 52 on the rear side has a conical shape expanding toward the front side, and a plurality of spiral flame swirling blades 59 are radially fixed to the front surface thereof. The flame reflecting disk 51 on the front side is slightly smaller than the flame reflecting disk 52 on the rear side, and also has a conical shape expanding toward the front side.
On the front surface of the front flame reflecting disk 51, there are a plurality of flame swirling vanes 60, which are spirally shaped but have a slightly different shape from the flame swirling vanes 59 on the rear side. They are fixed in a radial pattern with different positions. Furthermore, a plurality of large openings 61 are formed radially on the inner periphery of the front surface of the front flame reflecting disk 51, and a larger number of small openings 62 are formed on the outer periphery.

The front flame reflecting disk 51 is fixed to the front surface of the rear flame reflecting disk 52 via a spacer 63 with a constant distance therebetween. And these front and back double flame reflection discs 5
1, 52, one of the left and right sides of the rear flame reflecting disc 52 is attached to the inside of the circular notch 50 by a hinge 64;
In other words, it is rotatably attached to one of the joining plates 49, so that the circular notch 50 can be opened and closed back and forth, and can be held in the closed state using bolts, nuts, etc. ing.

The rotor 47 having such a structure is supported by a pivot 65 on the inner peripheral surface of the drum body 27 on both upper and lower sides thereof so as to be freely rotatable back and forth. A pair of left and right stoppers 6 are provided on the inner peripheral surface of the drum body 27.
6 are fixedly fixed thereto, and the rotor 47 can be rotated approximately 180 degrees to a position where it abuts one of these stoppers 66 on the front side and the other on the rear side. In other words, the rostol 47 can be reversed in its front and rear surfaces, and is normally fixed to these stoppers 66 using bolts, nuts, etc., and kept facing forward as shown in FIG.

Inside the drum body 27, a flame swirling reflector 110 is also installed in the middle of the drum body 27 in the axial direction, that is, between the front end into which asphalt waste material is introduced as described above and the rostol 47. As shown in FIGS. 15 and 16, this flame swirling reflector 110 has the following features:
A flame reflecting plate 112 having a ring shape and a circular opening 111 formed in the center is attached to the center of the drum body 25 (inside the drum body 27) by means of, for example, three brackets 114 fixed to the inner peripheral surface of the drum body 27. The flame reflector plate 11 is installed at the center of the circular vertical plane of
A plurality of spirally curved flame swirling blades 113 are fixed radially to the front surface of the flame swirling blade 2. The direction of the spiral of these flame swirling blades 113 is determined by Rostr 4.
The direction is opposite to that of the flame swirling vanes 59 and 60 of No. 7, and the tip of each flame swirling vane 113 protrudes from the outer peripheral edge of the flame reflecting plate 112.

In this way, the flame reflector 112 is connected to the drum body 27.
As shown in FIG. 15, there is a sufficient gap between the outer periphery of the flame reflector 112 and the inner periphery of the drum body 27 for the asphalt waste to pass through. remains. Further, since the flame reflector 112 is ring-shaped, the flame from the burner device 13 is transmitted through the flame reflector 11.
2 through the opening 111 of the flame reflecting disk 5.
1 and 52, and only part of the flame and radiant heat is reflected by the flame reflector 112. The flame from the burner device 13 is directed toward the opening 111 of the flame reflector 112 and is injected. do.

Therefore, a part of the flame (including radiant heat) injected from the burner device 13 hits the ring-shaped flame reflection plate 112 and is reflected, and at the same time, a part of the flame (including radiant heat) injected from the burner device 13 is reflected by the spiral flame that rotates together with the drum body 27. The flame is swirled by the flame swirling blades 113 and is injected almost straight, swirling around the inner circumferential surface of the drum body 27, turning into a vortex and flowing backwards, causing the flame to flow back around the inner circumferential surface of the drum body 27. The asphalt waste material is repeatedly blown onto the asphalt waste material that is being stirred and conveyed backward along the flame swirling reflector plate 110, and the asphalt waste material is efficiently melted even before it passes through the flame swirling reflector plate 110.

Further, the flame that has passed through the opening 111 of the flame reflection plate 112 is injected almost straight into the center of the rostre 47, and a part of the flame collides with the flame reflection disc 51 on the front side of the rostre 47 and is reflected. The remaining flame that has passed through the large and small openings 61 and 62 is reflected by the flame reflecting disk 52 on the rear side. In this case, since the direction of the flame jet from the burner device 13 can be changed to any direction as described above, it is possible to adjust the direction to the direction that has good reflectivity and is therefore the best direction for melting the asphalt waste material. can.

The flame reflected by the front and rear flame reflecting disks 51, 52 is reflected by the flame swirling vanes 59, 60 on the front surfaces of these flame reflecting disks 51, 52.
The flame swirling blades 113 of No. 0 draw a spiral in the opposite direction, and since these rotate together with the rotating drum 2, and the flame reflecting disks 51 and 52 are curved in a conical shape, the front The above flame swirling blade 1
The flame is rotated in the opposite direction to the direction of rotation by the flame reflector plate 13 and is radiated diagonally forward.
The flame passes through the opening 2 and is injected almost straight, swirling around it and turning into a vortex and flowing backwards. In this case, since the front and rear flame reflection disks 51 and 52 maintain a constant interval, the flame (including radiant heat) is reflected from the front flame reflection disk 51 and the flame reflection disk 52 is reflected from the rear flame reflection disk 52. The flame (including radiant heat) is separated into front and rear parts, and the flame reflection disk 52 on the rear side
The reflected flame chases the flame reflected by the flame reflecting disk 51 on the front side, and flows forward while pushing back the flame that returns to the rear. Moreover, since the front and rear flame swirling vanes 60 and 59 are different from each other and have different shapes, the flames flow backward as two types of vortices with different time differences, and the flame that was swirled and reversed first by the front flame reflection vane 59 flows backward. When the asphalt waste material that has passed through the flame swirling reflector 110 or hits the stirring feed blade 46 and bounces back, the flame swirled from behind by the flame swirling blade 60 on the rear side pushes it back forward. It will be repeated. In addition, these reflected flames before and after the flames merge with the flames that have been swirling and reflected by the flame swirling reflector 110 as described above, forming a more complicated flow and melting the asphalt waste material even more efficiently.

Therefore, the flame swirls, waves, and hits the asphalt waste material in the rotating drum 2 repeatedly, and after being first melted by the flame that is swirling and reflected by the flame swirling reflector 110, the flame reflecting disc 110 51 and 52, which are rotated and reflected by the front and rear flames, which melt the drum twice and firmly, and the entire range from the rear end to the front end of the rotating drum 2 has good heat convection and average heat loss with little heat loss. The asphalt waste material can be heated evenly and quickly with high thermal efficiency, and the regeneration ability is significantly improved compared to conventional methods.

Note that if both the front and rear flame reflection discs 51, 52 are provided with the flame swirling vanes 60, 59 as described above, the flame can be swirled on both of these front and rear flame reflection discs 51, 52. Even if it is provided on at least one of them, the front and rear flames can be rotated. In addition, flame rotation reflector 1
If a plurality of 10 are installed at a required interval back and forth, the meltability of the asphalt waste material will be even better. Furthermore, the flame turning reflector 110 may be any material that can pass through the asphalt waste and the flame;
The shape is not limited to those described above. Furthermore, the front flame swirling vane 113 and the rear flame swirling vanes 59 and 60 may have the same spiral direction.

Rostle 47 is melted as described above.
The asphalt waste material that has been transported is further crushed and stirred by a large number of crushing and stirring protrusions 56 protruding from the front of the rostol 47.
It passes through the grid 55. In this case, since the rostol 47 has a quadrangular pyramid shape, the molten asphalt waste material is smoothly pushed out behind the flame reflecting disks 51 and 52 so as to be radiated in the centrifugal direction from the periphery thereof.

A cylindrical trommel 67 is attached to the rear end of the drum body 27, as shown in FIGS. They are sorted into size and oversize.

The trommel 67 is made by forming a plain-woven wire mesh 68 into a cylindrical shape with flanges 69 at both front and rear ends, the diameter of which is larger than the inner diameter of the drum body 27. A plurality of mounting holes 70 are provided in the mounting hole 70 .
As shown in Fig. 11, the wide part of the drum body 2
A mounting protrusion 71 protruding from the flange 27a at the rear end of 7
and rotate the trommel 67 slightly,
By engaging the narrow portion of the mounting hole 70 and the mounting protrusion 71, the trommel 67 is attached to the drum body 2.
It is detachably attached to the rear end of the drum body 7 and forms a step between it and the inner peripheral surface of the drum body 27. Therefore,
The trommel 67 can be easily exchanged for different mesh sizes. Note that the attachment may be done by other methods. The trommel 67 is also a dome-shaped trommel cover 6 installed on the machine base 1.
It is covered by 7a with a certain gap formed therebetween. A flange 69 at the rear end of the trommel 67 is supported from below by a pair of left and right receiving rollers 115 that are supported within the trommel cover 67a.

Therefore, the trommel 67 rotates together with the rotating drum 2 within the trommel cover 67a,
The asphalt waste material that has passed through the rostle 47 smoothly flows into the trommel 67 due to the head difference between the inside of the drum body 27 and the inside of the trommel 67. The rear end of the trommel 67 is the left and right receiving roller 1.
Since it is supported by 15, trommel 6
7 rotates integrally with the drum body 27 without tilting due to the weight of the asphalt waste material.

Among the asphalt waste materials that fall into the trommel 67, those that are smaller than the mesh of the wire mesh 68 (recycled asphalt) pass through the wire mesh 68 and are deposited below the trommel 67 into the molten asphalt provided on the trommel cover 67a. It falls from the outlet 72 (FIG. 1). On the other hand, oversized ones remain temporarily in the trommel 67 and are pushed backward by asphalt waste material passing through the rostol 47 one after another.
This oversized stone block is mainly used for paving, and it has molten asphalt attached to it, and if it were discharged from Trommel 67 as it is, not only would it not be possible to reuse the stone block itself. The recovery rate of asphalt also decreases.

Therefore, oversized items are allowed to float in the trommel 67 for a while as described below, and the attached molten asphalt is removed before being discharged.

That is, as shown in FIG.
A column 73 is erected on the machine base 1 at the rear outside of the frame 1, and a fence 74 is rotatably attached to the front side of the column 73.
It is located at the bottom of the second half of the room. This fence 74 has front and rear arcuate claws 76, 77 fixed at a constant interval to a horizontal shaft 75 rotatably protruding from a support 73. The arc claws 76 and 77 located at the center extend from this center position along the inner circumferential surface of the trommel 67 in the direction of rotation thereof. The front arc claw 76 has a slightly longer length and a slightly higher height than the rear arc claw 77, and the front arc claw 76 has two slits 78, upper and lower, along its arc, and a rear arc. A single-stage slit 79 is formed in the claw 77. A lever 80 is fixed to the horizontal shaft 75 on the outside of the trommel 67, and by operating this lever 80, the arc claws 76, 77 move to the operating position (9th position) along the inner peripheral surface of the trommel 67. solid line position)
This can then be retracted to a non-active position (dotted line position) where the arcuate claws 76, 77 stand up.

Therefore, oversized items that did not pass through the wire mesh 68 of the trommel 67
As shown in FIG. 12, the arcuate claw 76 on the front side first
It is prevented from rolling backwards and repeatedly moves up and down along it, and is pushed by the asphalt waste material passing through the rostle 47 from behind and climbs over the arcuate pawl 76 on the front side. Passing through the slit 78, the front and rear arc claws 7
After entering between the trommel 6 and 77 and repeatedly moving back and forth and up and down between them, it climbs over the arcuate pawl 77 on the rear side or passes through the slit 79 and falls from the rear end of the trommel 67. In this way, the oversized one moves repeatedly while colliding with each other between the front side of the front arcuate claw 76 and the front and rear arcuate claws 76, 77, and is further heated by the heat from within the rotating drum 2 during the floating movement. The molten asphalt is crushed and melted inside the trommel 67 as it is exposed to mechanical impact while being moved, and the molten asphalt adhering to the stone blocks is removed during floating and passes through the wire mesh 68 of the trommel 67 to the molten asphalt outlet. The stone block 72 and from which the molten asphalt has been removed falls to an oversized outlet 81 (FIG. 1) provided in the trommel cover 67a below the rear end of the trommel 67.

When the trommel 67 becomes clogged, the undersized items are also discharged to the oversized outlet 81 together with the oversized items, and are captured and deposited on the fence 74. Therefore, in order to prevent clogging of the trommel 67, scrapers 82 and 83 are provided on both the inside and outside of the trommel 67 as follows.

That is, the inner scraper 82 is attached to a bracket 84 which is removably installed horizontally inside the rear opening of the trommel cover 67a and located inside the trommel 67, as shown in FIGS. 3 and 9.
A large number of chains 85 are suspended in parallel in the axial direction from the front end to the rear end inside the trommel 67, and the chain 85 is
7). At the lower end of each chain 85 is attached a piece 86 which also serves as a weight and is shaped like two small discs intersecting each other.

On the other hand, the outer scraper 83 has a large number of chains 87 suspended from the inner peripheral surface of the drum cover 67a in parallel in the axial direction from the front end to the rear end of the outer periphery of the trommel 67. They are provided at three locations on the upper center of the inner peripheral surface and on both left and right sides of the upper center. The same piece 88 as that of the inner scraper 82 is attached to the lower end of each chain 87 of the outer scraper 83.

Therefore, when the trommel 67 rotates, the multiple chains 85 of the inner scraper 82 come into sliding contact with the inner peripheral surface of the wire mesh 68 of the trommel 67, and the three outer scrapers 83 come into sliding contact with the outer peripheral surface of the wire mesh 68. Since the chains 85 and 87 have many uneven parts, the meshes of the wire mesh 68 are repeatedly scraped, and the molten asphalt adhering thereto is scraped off and dropped. In this case, each chain 85, 8
Irregularly shaped pieces 86 and 88 that also serve as weights are attached to the lower end of 7, and these pieces 86 and 88 move freely and repeatedly strike the inner and outer circumferential surfaces of the wire mesh 68, so that they do not stick to the wire mesh 68. The removed molten asphalt is accurately removed.

Note that the scrapers 82 and 83 are not limited to chains, and may be fork-shaped elastic metal plates, for example.

The trommel 67 also has an annular wire mesh fence 8 at its rear end as shown in FIGS. 13 and 14.
9, and a plurality of C- or J-shaped wire mesh scoop nets 90 may be provided radially inside the wire mesh fence 89.
Each scoop net 90 is provided with a discharge port 91 facing the outer periphery of the trommel 67. In this case, the oversized items are once held in place by a wire mesh fence 89, scooped up by a scoop net 90, allowed to float therein for a while as the trommel 67 rotates, and then discharged from the trommel 67 through a discharge port 91. Ru.

By the way, the asphalt waste material tends to be biased toward the direction of rotation within the rotating drum 2, and there is less asphalt waste material on the opposite side, and the heat flowing from the inside of the rotating drum 2 to the trommel 67 is mainly lost from this opposite side. Pass through 47. Therefore, if the trommel 67 is separated from the rotating drum 2 and rotated in the opposite direction, the oversized items that have passed through the rostre 47 can be removed from the trommel 67.
7, it can be biased and moved in the opposite direction to the rotational direction of the rotating drum 2, so that the heat passing through the rotor 47 from the opposite direction to the rotational direction of the rotating drum 2 can be can be heated effectively. In this case, Fuens 74
And the inner scraper 82 is located on the opposite side.

As shown in FIGS. 1, 3, and 4, a circular rear cover 92 is hinged to the outside of the rear end opening 67b of the trommel cover 67a with upper and lower hinges 93 so that it can be opened and closed. . On the rear end surface of the trommel cover 67a, on the opposite side from the hinge 93,
Upper and lower cover locks 94 for locking the rear cover 92 are attached. These cover locks 94
The rear cover 92 can be locked and released by operating a lever 96 fixed to the common shaft 95.

The rear cover 92 has a double structure with a conical front plate 97 and a rear plate 98 that widen toward the front, forming a hollow part 99 for heat insulation between them, and a center of the front and rear plates 97 and 98. A chimney connection port 100, which is also a main flue, is provided. and,
A chimney 101 is flange-connected to this chimney connection port 100, and a duct 103 that forms a substantially annular sub-flue 102 around the chimney connection port 100 is attached to the rear surface of the rear plate 98, and the upper end of this duct 103 is connected to the chimney. Connect to the middle of 101, and further connect to sub-flue 1
02, a plurality of short exhaust pipes 104 are provided radially through the front and rear plates 97, 98. Chimney 101
A disc-shaped damper 105 is attached to the inner lower end portion so that its opening degree can be adjusted by an outer lever 106.

Therefore, most of the gas generated within the rotating drum 2 is exhausted into the atmosphere from the chimney 101 through the chimney connection port 100, and a portion passes through the plurality of exhaust pipes 104 and flows into the annular sub-flue 102. After that, the gas enters the chimney 101 from the middle of the chimney 101 and mixes with the gas from the chimney connection port 100 to create a turbulent flow phenomenon, thereby purifying the exhaust gas.

The rear opening 67b of the trommel cover 67a is
It can be opened at any time by releasing the cover lock 94 and opening the rear cover 92. Therefore, if the burner device 13 is extinguished to finish the regeneration work and the rear cover 92 is opened while the residual asphalt is still soft, the rear surface of the rostre 47, the inner and outer surfaces of the trommel 67, the fence 74,
Residual asphalt adhering to the scrapers 82, 83, etc., and contaminants such as stone blocks remaining in the trommel 67 can be easily and artificially removed through the rear opening 67b. In this case, the work is easy if the fence 74 is erected as shown by the chain line in FIG.

In addition, by removing the rostol 47 from the stopper 66, rotating it, and reversing its front and rear surfaces, residual asphalt adhering to the front surface can be removed. Furthermore, by rotating the rostol 47 by an appropriate angle, If both sides are opened, foreign matter such as asphalt and large stones remaining in the rotating drum 2 can be removed.
Rotating drum 2 by using a scraping rod etc.
It can be easily removed without the need for a worker to enter inside. Furthermore, since the front and rear flame reflecting discs 51 and 52 can be opened and closed at the circular notch 50 of the rostre 47,
If this is opened to the rear, even if the rostol 47 is held in the stopper 66, these front and rear flame reflecting disks 51, 52 and their flame swirling blades 59,
60 can be cleaned.

The trommel cover 67a may be configured to be able to open and close its left side or right side, or may be divided into left and right halves so that both the left and right sides can be opened and closed.

In FIG. 1, reference numeral 107 indicates a fuel tank;
Reference numeral 08 denotes a control panel, and this control panel 108 is installed on the pillar 3 with a hinge 109 so as to be openable and closable, and can be stored below the hopper 4 so as not to interfere with work when not in use.

"Effects of the Invention" As detailed above, according to the asphalt waste recycling device of the present invention, since the flame turning reflector is also provided in the front position of the rostre, part of the flame from the burner device is directed forward of the rostol. The flame is reflected (including radiant heat) by the rotating flame reflector and flows backwards forward while rotating. In addition, the remaining flame (including radiant heat) that has passed through this flame swirling reflector is reflected by the flame reflecting disc of the rostre, and at the same time, it is swirled by the flame swirling vane, and the flame swivels between the rostle and the flame swirling reflector. Convection occurs between the flame swirling reflector as a vortex, and it also flows back toward the front of the flame swirling reflector, creating a state in which the flames directly reflected from the flame swirling reflector are chased.

Therefore, the heat convection due to flame reflection and the heating efficiency for asphalt waste material are better than before, and the regeneration ability can be further improved.

Furthermore, since the flame swirling vanes of the front flame swirling reflector and the flame swirling vanes of the rear rostre are spirally curved in opposite directions, the swirling directions of the flame vortices generated by them are mutually When they flow in opposite directions and merge, they form a very complex flow, and heat convection within the rotating drum occurs quickly and effectively over the entire area, making it possible to melt asphalt waste very efficiently.

[Brief explanation of drawings]

Fig. 1 is an overall vertical sectional side view of an embodiment of the present invention, Fig. 2 is a partially cutaway front view, Fig. 3 is a rear view thereof, Fig. 4 is a perspective view thereof, and Fig. 5 is a burner device thereof. FIG. 6 is an enlarged perspective view of the supporting portion of the rotating drum, FIG. 7 A and B are side views of other examples of stirring and feeding blades, and FIG. 8 is a rotor. 9 is a partially omitted enlarged front view of the trommel, FIG. 9 is a partially omitted enlarged perspective view of the trommel seen from the rear, FIG. 10 is a front view of the flange of the trommel, and FIG. 11 is an enlarged view showing the mounting structure of the trommel. 12 is a perspective view showing the action of the trommel, FIGS. 13 and 14 are rear views and sectional views showing other examples of the trommel, and FIGS. 15 and 1
Figure 6 is a front view and a sectional view of the flame swirling reflector. DESCRIPTION OF SYMBOLS 1... Machine base, 2... Rotating drum, 2a... Drum cover, 3... Support, 4... Hopper, 5... Loading shutter, 5a... Lower end opening of loading shutter, 6... Rotating drum Front cover plate, 7...Inlet port,
8...Chain, 9,10...Insulating curtain, 1
1...Soundproof heat insulation material, 12...Soundproof heat insulation layer, 13...
... Burner device, 14 ... Base, 15 ... Adjustment bolt, 16 ... Slide table, 17 ... Ball wheel, 18 ... Floor plate, 19 ... Spherical flange, 2
0... Burner mouth, 21... Spherical ring, 22...
Holding plate, 23...Fixing bolt, 24...Nozzle pipe, 25...Air supply duct, 26...Air supply fan,
27... Drum body, 27... Flange of drum body, 28... Heat insulating material, 29... Heat insulating coating layer, 30
...Rim, 31a, 31b...Rib, 32...Bearing stand, 33...Support roller, 33a, 33b...
Outer ring, inner ring of support roller, 34... pinching roller,
35...Hollow part of rim, 36, 37...Blower fin, 38...Bearing stand, 39...Large sprocket wheel, 40...Drum rotation motor, 41...
Small drive sprocket wheel, 42...Chain, 43...Tensioning roller, 44...Crushing protrusion, 45...Bar-shaped guide rib, 46...Agitating feed blade, 47...Rostle, 48...Grid Board, 49...
...Joining plate, 50...Circular missing part of Rostle, 5
1, 52... Front and rear flame reflecting disks, 53... Arcuate ribs, 54... Intermediate ribs, 55... Grids, 5
6... Crushing stirring protrusion, 57, 58... Auxiliary protrusion,
59, 60...Flame swirling blade, 61...Large opening,
62... Small opening, 63... Spacer, 64... Hinge, 65... Pivot, 66... Stopper, 67
... Trommel, 67a, 67b ... Trommel cover and rear opening, 68 ... Wire mesh, 69 ...
Flange, 70...Mounting hole, 71...Mounting protrusion,
72... Molten asphalt discharge port, 73... Pillar, 74... Fence, 75... Horizontal shaft, 76,
77... Arc claw, 78, 79... Slit, 80
...Lever, 81 ...Oversized discharge port, 8
2, 83... Inner and outer scrapers, 84...
Inner scraper bracket, 85...chain, 86...piece, 87...chain, 88...
Piece, 89...wire mesh fence, 90...scoop net, 91...scoop net outlet, 92...
...Rear cover, 93...Hinge, 94, 95, 96
...Cover lock, its shaft, lever, 9
7, 98...Front plate, rear plate of rear cover, 99...
Hollow part, 100...Chimney connection port, 101...Chimney, 102...Sub-flue, 103...Duct, 10
4... Exhaust pipe, 105... Damper, 106... Lever, 107... Fuel tank, 108... Control panel, 109... Hinge, 110... Flame turning reflector, 111... Opening, 112... Flame Reflector, 1
13... Flame swirling blade, 114... Bracket,
115...Receiving roller.

Claims (1)

[Claims] 1. A rostle is arranged in a horizontally long rotating drum, and a flame reflecting disk is provided in the center of the rostle, and a plurality of curved flame swirling blades are provided in a spiral shape as a whole on the front surface of the flame reflecting disk, While the flame from the burner device is injected towards the flame reflecting disk and reflected in a circular motion, the asphalt waste material is put into the rotating drum from the front side, and as the rotating drum rotates, it melts while being stirred and flows to the rear side. In the asphalt waste recycling device that transports and discharges from the discharge port, a flame rotating reflector is installed via a plurality of brackets at a position in front of the rostol in the middle of the rotating drum, and in front of the flame rotating reflector. An asphalt waste material recycling device, characterized in that a plurality of flame swirling blades are provided in a spiral shape that curves in the opposite direction to the flame swirling blades of the rostre.