JP6990417B2 - Asphalt mixture melting equipment - Google Patents

Description

The present invention relates to an asphalt mixture melting device.

As a conventional asphalt mixture melting device, there is one described in Patent Document 1. According to this, a melting portion for melting the asphalt mixture is provided on the substrate, a space is provided between the outer periphery of the melting portion and the inner circumference of the substrate, and combustion gas is supplied from the combustion device to this space. This combustion gas was configured to pass through the space and the melting portion and be exhausted from the exhaust portion to the outside of the substrate.

The asphalt mixture melting device having the above configuration melts the asphalt mixture by indirect heating by passing the combustion gas through the space formed around the melting part and direct heating by introducing the combustion gas into the melting part. It was said that it could be melted well.

Japanese Patent Application Laid-Open No. 2002-227119

In the above-mentioned asphalt mixture melting device, a space for a passage portion of a combustion gas composed of a space formed around the melting portion is required, and the device becomes large. In addition, the combustion gas in the space formed around the melting part in indirect heating passes through the wall and the heat conduction efficiency is poor, and the combustion gas introduced into the melting part in direct heating has a low temperature, so it takes time to work. There was a problem that it took.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide an asphalt mixture melting device capable of making the device compact and improving work efficiency.

In the invention according to claim 1, a melting portion for accommodating and melting an asphalt mixture and a melting portion are used.
A stirring unit in which the asphalt mixture is arranged so as to be agitated in the melting unit, and a stirring unit.
The driving means for driving the stirring unit and
A combustion means disposed in the melting portion to heat the asphalt mixture, and
It is an asphalt mixture melting device equipped with
The stirring unit includes a shaft member and a stirring body extended from the shaft member.
The combustion means is arranged in the melting portion so that the flame of the combustion means is directed toward a region including a central portion in the axial direction of the shaft member arranged in the melting portion and its periphery.

According to this, in the combustion means, the flame of the combustion means is arranged in the melting part so as to be directed toward the central portion in the axial direction of the shaft member arranged in the melting part and the region including the periphery thereof, and the flame of the combustion means is arranged. Since it is configured to directly hit the asphalt mixture, space for the passage part of the combustion gas is not required, the device can be made compact, and the heat conduction efficiency can be improved, so that the efficiency of the melting work of the asphalt mixture can be improved. Can be improved.

Further, the stirring body has a rod-shaped neck portion and a plate-shaped head portion formed wider than the neck portion.

According to this, the asphalt mixture falls on the head and slips through with almost no rest on the neck, so that it is possible to create a part where the asphalt mixture moves and a part where the asphalt mixture hardly moves. Therefore, the stirring efficiency of the heated asphalt mixture can be improved.

Further, the surface of the head on the front side in the rotation direction is inclined with respect to the axis of the shaft member and is directed toward the central portion of the shaft member in the melting portion in the axis direction.

According to this, the asphalt mixture is brought to the region including the central portion in the axial direction of the shaft member arranged in the melting portion and its periphery to which the flame of the combustion means is directed, so that the flame of the combustion means is easily hit. Therefore, the melting work can be shortened.

Further, the upper portion of the melting portion is formed in a box shape having an upper wall and a side wall orthogonal to the upper wall, and the combustion means is attached to the upper wall in the vicinity of the combustion means of the upper wall. An air intake is provided.

According to this, according to the experiment of the present applicant, the air in the vicinity of the combustion means of the upper wall is attached as compared with the case where the air intake is arranged only on the upper side wall of the molten portion formed in the shape of a box. It is recognized that the combustibility of the flame of the combustion means is improved by arranging the intake. Since the air pressure is lowered by the flow of the flame, it is presumed that the air taken in from the air intake near the combustion means is sucked into the flame and easily taken in.

It is a front view of the asphalt mixture melting apparatus of one Embodiment of this invention. It is a left side view of the same embodiment. It is a top view of the same embodiment. FIG. 3 is a cross-sectional view taken along the line IV-IV of FIG. It is explanatory drawing of the agitator.

A first embodiment of the asphalt mixture melting apparatus of the present invention will be described with reference to the drawings. In the following description, F is the front, B is the back, R is the right, L is the left, U is the top, and D is the bottom of the arrows in each drawing.

As shown in FIGS. 1 to 4, the asphalt mixture melting device 10 generally includes a frame portion 20, a melting portion 30, a stirring portion 60, a driving means 70, and a combustion means 80 (FIGS. 2 and 3). The asphalt mixture is charged into the melting unit 30 and heated and stirred.

The frame portion 20 is formed in a frame shape in which channel steels are connected, and has a melting portion mounting portion 21 to which the melting portion 30 is mounted, and a driving means mounting portion 22 to which the driving means 70 is mounted.

The melting portion 30 is made of metal and is formed in a box shape in which the lower end is closed and the upper end is open. More specifically, the lower portion 31 is formed in a semi-cylindrical shape with the front and rear ends closed, and the upper portion 32 is formed in a square cylinder shape. The melting portion 30 is attached to the melting portion mounting portion 21.

The upper portion 32 of the melting portion 30 is provided with a bridge portion 33 extending from the front end to the rear end, and is opened in a substantially rectangular shape with the bridge portion 33 as a boundary, and is located on the left side and the rear side. A positioned input port 35 is formed. The left opening 34 is used when the asphalt mixture is discharged and when the asphalt mixture melting device 10 is maintained. The charging port 35 is used when the asphalt mixture is charged and when the asphalt mixture melting device 10 is maintained.

A left lid 36 capable of opening and closing the left opening 34 and an insertion port lid 37 capable of opening and closing the insertion port 35 are rotatably supported by the bridge portion 33 about the front-rear direction.

The left lid 36 and the charging port lid 37 are opened when the asphalt mixture is melted and stirred, and the asphalt mixture melting device 10 is closed when not in use or when the asphalt mixture is moved to close the left opening 34 and the charging port 35. It covers.

An insertion hole 38 is provided in the central portion of the left lid 36, and a substantially cylindrical mounting guide 39 extending diagonally upward to the left from the insertion hole 38 is attached. The mounting guide 39 is for mounting the combustion means 80.

On the left lid 36, two substantially rectangular air intakes 40 are formed with the mounting guide 39 sandwiched in the front-rear direction, and a covering member 41 capable of sliding and moving in the front-rear direction to cover each of the air intakes 40 is provided. It is arranged.

A substantially rectangular opening window 42 is formed in the insertion palate 37, and a pair of covering members 43 capable of sliding in the front-rear direction to cover the opening window 42 are arranged.

Further, a net member 44 capable of covering the loading port 35 is rotatably supported by the bridge portion 33 about the front-rear direction as an axis inside the loading port lid 37.

Further, a substantially rectangular second air intake port 45 is formed on the left wall 32b of the upper portion 32 of the melting portion 30, and a covering member 46 capable of sliding in the vertical direction to cover the second air intake port 45 is formed. Are arranged.

In other words, the upper portion 32 of the melting portion 30 is formed in a box shape having a left lid 36 constituting the upper wall 32a and a side wall including the left wall 32b orthogonal to the upper wall 32a, and burns on the upper wall 32a. The means 80 is attached, and the air intake port 40 is arranged in the vicinity of the combustion means on the upper wall 32a.

On the left side of the lower portion 31 of the melting portion 30, two substantially rectangular discharge ports 47 for discharging the heated and agitated asphalt mixture are arranged along the front-rear direction.

A discharge port opening / closing member 48 that can open / close the discharge port 47 is rotatably supported on the lower portion 31 of the melting portion 30 about the front-rear direction.

The discharge port opening / closing member 48 can be opened / closed by a ball screw mechanism including an operation handle 49 having a screw portion 50 and a nut 51 attached to the melting portion mounting portion 21. The screw portion 50 is in contact with the discharge port opening / closing member 48, and the discharge port opening / closing member 48 is opened / closed by the axial movement of the screw portion 50 by the rotational operation of the operation handle 49.

A discharge guide 52 that regulates the discharge of the asphalt mixture is arranged in the vicinity of the discharge port 47.

The stirring unit 60 includes a shaft member 61 and a stirring body 62. The shaft member 61 is made of metal and is formed in a columnar shape. The stirring body 62 is attached to the shaft member 61 at three locations at equal intervals when viewed from the axial direction of the shaft member 61. In this embodiment, they are attached at intervals of 120 degrees.

The agitator 62 is made of metal and has a neck portion 63 and a head portion 64. The neck portion 63 is formed in a columnar shape, and is attached to the shaft member 61 on one end side and the head portion 64 is attached to the other end side. The head 64 is formed in the shape of a hexagonal plate.

As shown in FIG. 5, the surface 64a on the front side in the rotation direction of the head 64 is inclined with respect to the axis of the shaft member 61 and is directed toward the central portion of the shaft member 61 in the melting portion 30 in the axis direction. There is.

In the shaft member 61, the stirring unit 60 is axially supported by the front wall 31a and the rear wall 31b of the lower portion 31 of the melting unit 30 via the bearing member 65 with the front-rear direction as the axis.

An electric motor is used as the drive means 70, and the drive means 70 is attached to the drive means mounting portion 22. In the drive means 70, a drive shaft 72 arranged via a speed reducer 71 is connected to the shaft member 61 by a joint member 73. When the driving means 70 is driven by operating a control device (not shown), the stirring unit 60 becomes rotatable.

A gas burner is used as the combustion means 80, and the combustion means 80 is attached by inserting it into the inside of the attachment guide 39 and screwing it.

The usage mode and working function of the asphalt mixture melting device 10 having the above configuration will be described.

The asphalt mixture melting device 10 is mounted on a vehicle such as a truck, moved to the work site, and installed at the installation location of the work site. During the movement, the opening portion of the asphalt mixture melting device 10 is closed and covered with the left lid 36, the charging palate 37, the covering members 41, 43, 46, etc., so that the left lid 36, the charging palate 37, and the covering are covered. The members 41, 43, and 46 are opened to open.

The combustion means 80 is attached to the attachment guide 39, and the combustion means 80 is ignited to start combustion. Next, the asphalt mixture is charged from the charging port 35. Then, when the driving means 70 is driven, the stirring unit 60 rotates. In this embodiment, the stirring unit 60 rotates counterclockwise in FIG.

In the melting unit 30, the stirring unit 60 stirs the asphalt mixture, and the combustion means 80 heats the asphalt mixture.

At this time, the asphalt mixture is placed on the surface 64a of the head 64 of the stirring body 62, carried upward, and then dropped, and is hardly placed on the neck 63. , You can create a part that hardly moves. Therefore, the stirring efficiency of the heated asphalt mixture is improved.

Further, since the asphalt mixture is brought to the region including the central portion in the axial direction of the shaft member 61 arranged in the melting portion 30 and the periphery thereof to which the flame of the combustion means 80 is directed, the flame of the combustion means 80 is directed. It becomes easier to hit and shortens the melting work.

Further, since the flame of the combustion means 80 flows along the upper surface of the charged asphalt mixture along the axial direction of the shaft member 61, the flame of the combustion means 80 is evenly distributed on the asphalt mixture in the melting portion 30. Can be guessed.

When the melting of the asphalt mixture is completed, the operation handle 49 is operated to open the discharge port opening / closing member 48, and the asphalt mixture is discharged from the discharge port 47. The discharge of the asphalt mixture is regulated by the discharge guide 52. At this time, the driving means 70 can be rotated in the reverse direction to turn the stirring unit 60 clockwise in FIG. 4 to support the discharge of the asphalt mixture.

The applicant of the present invention heated and stirred 75 kg of a commercially available asphalt mixture (manhole repair material trade name Apache asphalt distributor Save Machine Co., Ltd.) until the temperature reached 150 ° C. Conventionally, the asphalt mixture was placed in a tray and heated with a gas burner. However, it took 30 minutes for three workers to complete the work by stirring by hand, but in the asphalt mixture melting device 10 of the present embodiment, the work is completed in fifteen minutes by one worker. did.

In the asphalt mixture melting device 10 having the above configuration, the asphalt mixture is accommodated and melted, and the melting unit 30 is used.
A stirring unit 60 arranged so that the asphalt mixture can be stirred in the melting unit 30 and a stirring unit 60.
The driving means 70 for driving the stirring unit 60 and
Combustion means 80 disposed in the melting section 30 to heat the asphalt mixture, and
It is an asphalt mixture melting device equipped with
The stirring unit 60 includes a shaft member 61 and a stirring body 62 extending from the shaft member 61.
In the combustion means 80, the flame of the combustion means 80 is arranged in the melting unit 30 so as to face a region including the central portion in the axial direction of the shaft member 61 arranged in the melting unit 30 and its periphery.

According to this, in the combustion means 80, the flame of the combustion means 80 is arranged in the melting portion 30 so as to be directed toward the central portion in the axial direction of the shaft member 61 arranged in the melting portion 30 and the periphery thereof. Since the flame of the combustion means 80 directly hits the asphalt mixture, space for the passage portion of the combustion gas is not required, the device can be made compact, and the heat conduction efficiency can be improved. It is possible to improve the efficiency of the melting work of the asphalt mixture.

Further, the stirring body 62 has a rod-shaped neck portion 63 and a plate-shaped head portion 64 formed wider than the neck portion 63.

According to this, the asphalt mixture falls on the head 64 and slips through the neck 63 with almost no rest, so that it is possible to create a portion where the asphalt mixture moves and a portion where the asphalt mixture hardly moves. Therefore, the stirring efficiency of the heated asphalt mixture can be improved.

Further, the surface 64a on the front side in the rotation direction of the head 64 is inclined with respect to the axis of the shaft member 61 and is directed toward the central portion of the shaft member 61 in the melting portion 30 in the axis direction.

According to this, the asphalt mixture is brought to the region including the central portion in the axial direction of the shaft member 61 arranged in the melting portion 30 and the periphery thereof to which the flame of the combustion means 80 is directed. It becomes easier to hit the flame, and the melting work can be shortened.

Further, the upper portion 32 of the melting portion 30 is formed in a box shape having an upper wall 32a and a side wall including a left wall 32b orthogonal to the upper wall 32a, and the combustion means 80 is attached to the upper wall 32a to form an upper wall. An air intake 40 is arranged in the vicinity of the combustion means 80 of 32a.

According to this, according to the experiment of the present applicant, the combustion means 80 of the upper wall 32a is attached as compared with the case where the air intake is arranged only on the side wall of the upper portion 32 of the melting portion 30 formed in the shape of a box. It is recognized that the combustibility of the flame of the combustion means 80 is improved by arranging the air intake port 40 in the vicinity of the air intake. Since the air pressure is lowered by the flow of the flame, it is presumed that the air taken in from the air intake 40 near the combustion means 80 is sucked into the flame and easily taken in.

The asphalt mixture melting device 10 of the present invention is not limited to the above configuration. That is, various design changes and the like are possible as long as the gist of the present invention is not deviated.

For example, a gas burner that burns gas is used as the combustion means 80, but a solid or liquid may be vaporized and burned.

Further, as long as the driving means 70 can rotate the stirring unit 60, other existing motors and the like can be used.

Further, the position of the air intake port 40 can be appropriately changed as long as the combustion of the combustion means 80 can be maintained.

Further, the shape of the stirring body 62 can be appropriately changed as long as the asphalt mixture can be suitably stirred.

10 Asphalt mixture melting device 30 Melting part 32 Upper part 32a Upper wall 32b Left wall 40 Air intake 60 Stirring part 61 Shaft member 62 Stirring body 63 Neck part 64 Head 64a Surface 70 Driving means 80 Combustion means

Claims (4)

A melting part that houses and melts asphalt mixture,
A stirring unit in which the asphalt mixture is arranged so as to be agitated in the melting unit, and a stirring unit.
The driving means for driving the stirring unit and
A combustion means disposed in the melting portion to heat the asphalt mixture, and
It is an asphalt mixture melting device equipped with
The stirring unit includes a shaft member and a stirring body extended from the shaft member.
The combustion means is characterized in that the flame of the combustion means is arranged in the melting portion so as to be directed toward a region including a central portion in the axial direction of the shaft member arranged in the melting portion and its periphery. Asphalt mixture melting equipment. The asphalt mixture melting device according to claim 1, wherein the agitating body has a rod-shaped neck portion and a plate-shaped head portion formed wider than the neck portion. 2. The asphalt mixture melting device described. The upper portion of the melting portion is formed in a box shape having an upper wall and a side wall orthogonal to the upper wall.
The asphalt mixture melting device according to claim 1, 2 or 3, wherein the combustion means is attached to the upper wall, and an air intake is arranged in the vicinity of the combustion means on the upper wall.

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