JPH0416567B2 - - Google Patents

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention relates to an apparatus for regenerating asphalt waste by heating and melting it, in particular, an apparatus for regenerating asphalt waste by heating and melting it, and in particular for injecting flame from a burner apparatus into a horizontally elongated rotating drum. This invention relates to an asphalt waste recycling device in which asphalt waste is put into a drum, melted while being stirred as it rotates, passed through a rottle in a rotating drum, and then discharged.

"Prior Art" The present applicant has developed this type of asphalt waste recycling device as disclosed in Japanese Patent Application Laid-Open No. 61-21204, in which asphalt waste that has passed through a rostol is collected by a discharge body having a screw. We have already proposed something that will be discharged immediately. Furthermore, since the asphalt waste material that has passed through the rostol contains many stone blocks used for paving, it has been proposed to use a trommel to sift these out of the recycled asphalt.

"Problems to be Solved by the Invention" An object of the present invention is to enable asphalt waste to be melted even within a trommel, and to efficiently screen the trommel.

``Means for Solving the Problems'' The present invention involves injecting flame from a burner device into a horizontally long rotating drum, throwing asphalt waste into the drum, and melting it while stirring as the drum rotates. After passing through a rostle in a rotating drum, asphalt waste material is recycled using a cylindrical mesh trommel that follows the rear end of the rotating drum and rotates integrally with or separately from it to screen out undersized and oversized materials. The device is characterized by having the following configuration.

That is, a fall regulating member that prevents asphalt waste material from falling from a part of the trommel in the circumferential direction is installed on the support at the inner rear end position of the trommel.

``Operation'' Therefore, the asphalt waste material that has passed through the rostol enters the cylindrical trommel from the rear end of the rotating drum, and is prevented from falling immediately from the rear end of the trommel by the fall prevention member, and temporarily falls inside the trommel. As the trommel rotates, the particles remain and are further melted as they roll through the trommel. Undersized particles fall from the trommel holes, and oversized particles pass through the trommel and are discharged separately.

"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 recycling device 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 heat insulation properties than the rotating drum 2 and protects the supporting roller 33 and the clamping roller 34 from high heat.
A hollow portion 35 is formed in order to protect the material. 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 rod-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. A large number of crushing protrusions 41 and stirring feed 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, the 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 toward the front side of the arcuate ribs 53, and the inner circumferential surface of the arcuate ribs 53 on the inner circumferential edge and the outer circumferential surface of the arcuate ribs 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.

Therefore, a part of the flame injected from the burner device 13 collides with the flame reflection disk 51 on the front side and is reflected, and the remaining flame that passes through the large and small openings 61 and 62 is reflected on the flame reflection disk on the rear side. It is reflected by the disk 52. 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 flame swirling blades 59, 60 protruding from the front surfaces of these flame reflecting disks 51, 52, which rotate together with the rotary drum 2, Since the reflecting discs 51 and 52 are curved in a conical shape, the flame is turned by them, and is radiated diagonally forward, turning into a vortex around the flame that is injected almost straight. backflow. In this case, since the front and rear flame reflecting discs 51 and 52 maintain a constant interval, the flame reflected from the front flame reflecting disc 51 and the flame reflecting from the rear flame reflecting disc 52 are different from each other. The flame reflected from the flame reflecting disk 52 on the rear side chases the flame reflected from the flame reflecting disk 51 on the front side, and flows forward while pushing back the flame that returns backward. 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 it hits the asphalt waste material or the stirring and feeding blade 46 and bounces back, the flame swirled from behind by the flame swirling blade 60 on the rear side pushes it back forward, and this process is repeated.

Therefore, the asphalt waste material inside the rotating drum 2 is hit repeatedly by the flame in a swirling, undulating manner, and the entire range from the rear end to the front end inside the rotating drum 2 is heated evenly with good heat convection and little heat loss. This enables the asphalt waste to be melted quickly and evenly with good thermal efficiency, and the recycling capacity 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.

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 flange 69 at the front end is provided with a plurality of mounting holes 70 as shown in FIG. As shown in FIG. 11, the wide part of the hole 70 is fitted with the mounting protrusion 71 protruding from the mouth edge of the rear end of the drum body 27, and the trommel 67 is slightly rotated to reduce the width of the mounting hole 70. By engaging the portion and the mounting protrusion 71, the trommel 67 is attached to the drum body 27.
It can be detachably attached to the rear end of the Therefore, the trommel 67 with a different mesh size can be easily replaced. Note that the attachment may be done by other methods. Trommel 67 is also machine 1
Dome-shaped trommel cover 67 installed above
It is covered with a by forming a certain gap.

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 rostol 47 enters the inside of this trommel 67, and those that are smaller than the mesh of the wire mesh 68 (recycled asphalt) pass through this wire mesh 68 and are placed under the trommel cover 67a.
Molten asphalt discharge port 72 provided in
(Figure 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 support post 73 is erected on the machine base 1 on the rear outside of the trommel 67, and a fall restriction member 74 is rotatably attached to the front side of the support support 73. ing. This fall regulating member 74 has front and rear arcuate claws 76, 7 mounted on a horizontal shaft 75 rotatably protruding from a support 73.
The horizontal axis 75 is located at the center of the lower part of the trommel 67, and the arcuate claws 76 and 77 on the front and back extend along the inner circumferential surface of the trommel 67 from this central position. and extends in the direction of rotation. 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. Claw 77
A one-stage slit 79 is formed in the slit 79 . A lever 80 is fixed to the horizontal shaft 75 on the outside of the trommel 67, and by operating this lever 80, the fall regulating member 74 is moved to the arcuate claw 76,
These circular claws 76, 77 are moved from the working position (solid line position in FIG. 9) along the inner circumferential surface of the trommel 67.
can be evacuated to the inactive position (dotted line position) where the robot stands up.

Therefore, oversized items that did not pass through the wire mesh 68 of the trommel 67
As shown in FIG. 12, the arc 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 caught and deposited on the fall regulating member 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 suspended in parallel in the axial direction from the front end to the rear end inside the trommel 67, and is placed on the side opposite to the fall regulating member 74 (the side opposite to the rotation direction of the trommel 67). positioned. 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.

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 and the regeneration work is completed, and the residual asphalt is still soft, if the rear cover 92 is opened, the rear surface of the rostre 47, the inner and outer surfaces of the trommel 67, and the fall prevention member 7 will be damaged.
4. Residual asphalt adhering to the scrapers 82, 83, etc., and contaminants such as stone blocks remaining in the trommel 67 can be easily removed manually through the rear opening 67b. In this case, if the fall regulating member 74 is erected as shown by the chain line in FIG.
The work is easy.

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 apparatus of the present invention, asphalt waste falls from the rear end of the trommel at the inner rear end position and also in a part of the circumferential direction. Since we have installed a falling control member that prevents the asphalt from falling, it is possible to temporarily retain the asphalt waste inside the trommel, roll it as the trommel rotates, and further melt it inside the trommel. The molten asphalt that is present can be accurately removed, the recovery rate of recycled asphalt is improved, and stone blocks and the like can also be recovered without asphalt adhering to them, so sieving can be performed accurately.

Furthermore, if the fall regulating member is rotatably attached to the support, it is easy to remove residue inside the trommel and clean the rotating drum, rostol, trommel, etc.

[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 support 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. FIG. 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. The sectional view and FIG. 12 are perspective views showing the action of the fall regulating member. DESCRIPTION OF SYMBOLS 1...Machine base, 2...Rotating drum, 2a...Drum cover, 3...Strut, 4...Hopper, 5...Lower end opening of the input shooter, 5a...Lower end opening of the input shooter, 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, 28...Insulating material, 29...
Heat insulating coating layer, 30... Rim, 31a, 31b...
Rib, 32...Bearing stand, 33...Support roller, 3
3a, 33b... Outer ring, inner ring of support roller, 34
...Pinch roller, 35...Hollow part of rim, 36,
37...Blower fin, 38...Bearing stand, 39...
Large sprocket wheel, 40...Drum rotation motor, 41...Small sprocket wheel for drive, 42...Chain, 43...Tension roller,
44... Crushing protrusion, 45... Rod-shaped guide rib,
46... Stirring feed blade, 47... Lostle, 48
... Lattice plate, 49 ... Joint plate, 50 ... Circular missing part of rostle, 51, 52 ... Front and rear flame reflecting disks, 53 ... Arc-shaped rib, 54 ... Intermediate rib, 5
5... Grid mesh, 56... Crushing stirring protrusion, 57,5
8... Auxiliary projection, 59, 60... Flame swirling blade,
61... Large opening, 62... Small opening, 63... Spacer, 64... Hinge, 65... Pivot, 66...
...Stoppa, 67...Trommel, 67a, 67
b... Trommel cover and rear opening, 68...
... Wire mesh, 69 ... Flange, 70 ... Mounting hole, 7
1... Mounting protrusion, 72... Molten asphalt discharge port, 73... Support column, 74... Fall control member, 75
...Horizontal axis, 76, 77...Circular claw, 78, 79
...Slit, 80...Lever, 81...Oversized discharge port, 82, 83...Inner and outer scrapers, 84...Inner scraper bracket, 85...Chain, 86...Piece, 87...Chain , 88...piece, 92...rear cover, 93
...Hinge, 94,95,96...Cover lock,
Its shaft, lever, 97, 98... front plate of rear cover, rear plate, 99... hollow part, 100... chimney connection port, 101... chimney, 102... auxiliary flue,
103...Duct, 104...Exhaust pipe, 105...
...Damper, 106...Lever, 107...Fuel tank, 108...Control panel, 109...Hinge.

Claims (1)

[Claims] 1. Flame from a burner device is injected into a horizontally long rotating drum, and asphalt waste is thrown into it, and asphalt waste is stirred and melted as it rotates, passing through a rostle in the rotating drum. After that, in an asphalt waste recycling device in which undersized and oversized materials are sieved by a cylindrical mesh trommel that follows the rear end of the rotating drum and rotates integrally or separately therewith, the circle of the trommel is An apparatus for recycling asphalt waste material, characterized in that a fall regulating member for preventing the asphalt waste material from falling from a part of the circumferential direction is installed on a support at an inner rear end position of the trommel. 2. The asphalt waste recycling apparatus according to claim 1, wherein the fall regulating member is rotatably pivoted to the support column.