JP2021042571A - Asphalt plant - Google Patents

Abstract

To provide a flexible asphalt plant that saves space when installing the plant and shortens the construction period.SOLUTION: A recycled material storage bin 18 and a recycled material measuring tank 16 are divided into a recycled material measuring unit 17, a recycled material storage lower unit 19, a recycled material storage intermediate unit 20, and a recycled material storage upper unit 21 to form a recycled material tower 6. Further, the height size of the units of at least the same level of a new material tower 5 and the recycled material tower 6 are formed to be substantially the same. The long side of each unit of the new material tower 5 and the recycled material tower 6 are placed opposite each other and connected on a mixer stand 2 on which a mixer 4 is mounted to form an integrated structure.SELECTED DRAWING: Figure 1

Description

The present invention relates to an asphalt plant for producing an asphalt mixture which is a road paving material.

The asphalt plant has a layered structure of a new material dryer that heats new aggregate (hereinafter referred to as "new material") and each device that has the functions of sieving, storing, weighing, and mixing the new material heated by the new material dryer. It is equipped with a new material tower that is piled up in. This new material tower is a new material weighing unit, a new material storage lower unit, and a new material storage upper unit that incorporates the above functions in a machine frame that has a substantially rectangular parallelepiped shape with a transportable size on a mixer stand equipped with a mixer. And the vibrating sieve units are stacked one after another so that they can be assembled in a short period of time.

In recent years, asphalt mixture manufacturing plants have been trying to reuse asphalt pavement waste materials (hereinafter referred to as "waste materials") dug up by road construction, etc., and in the vicinity of the new material tower, there is a waste material dryer that heats the waste materials. , A recycled material storage bottle for storing recycled materials heated and regenerated by the waste material dryer, a recycled material measuring tank, and a recycled material supply means for supplying the recycled material to the mixer of the new material tower are installed, and a storage place for the waste material. Many additional facilities have been installed on the factory premises, such as by providing such equipment. Therefore, the equipment and the like will be laid out with the new material tower as the core while considering the flow line of the transportation vehicle and the surrounding environment.

Asphalt mixture manufacturing factories are located in the suburbs of urban areas where demand is high, and there are relatively large factories with annual shipments of asphalt mixture for highway manufacturing, etc. of 100,000 tons or more, while they are separated from urban areas. Small and medium-sized factories with annual shipments of 50,000 tons or less are often set up in rural areas, and although there are various factors such as the factory site area, site shape, and surrounding conditions, the asphalt plant is not installed. Space, layout flexibility, short construction period, consideration for the surrounding environment, aesthetics, etc. are also common major requirements.

Therefore, in Japanese Patent Application Laid-Open No. 6-63606 (Patent Document 1), which the applicant filed earlier, the recycled material previously heated by the waste material dryer is transported to a recycled material storage bottle separately placed on the ground and temporarily stored. Then, it was improved that the recycled material storage bottle was transported to the mixer of the new material tower and supplied, and a waste material dryer and a recycled material storage bin for temporary storage of the recycled material were mounted on the elevated platform. The recycled material discharged from the storage bottle is directly transported to the mixer of the new material tower. This saves space by eliminating the need for a recycled material storage bottle that was previously placed separately, and further saves space by arranging an elevated platform across the approach passage for the asphalt mixture transport vehicle to enter. We are proposing an asphalt plant that can be converted.

Further, in Japanese Patent Application Laid-Open No. 2015-227598 (Patent Document 2), the mixer previously arranged on the new material tower side is arranged close to the recycled material tower side, and the recycled material measuring tank is placed directly above the mixer. , Recycled material storage bottles are arranged directly above the recycled material measuring tank, and the recycled material discharged from the recycled material storage bottle is thrown into the mixer by its own weight through the recycled material measuring tank directly below. .. This eliminates the need for a transport device that transports the recycled material to the mixer, which eliminates the need for spraying heavy oil to prevent adhesion, makes it possible to prevent the generation of oil smoke and odor, and stains around the transport device. We are also proposing an asphalt plant that takes into consideration.

Further, in Japanese Patent Application Laid-Open No. 2017-198041 (Patent Document 3), the new material tower is incorporated into the elevated base of the recycled material tower, and the two previously provided elevated bases are integrated into one and under the elevated base. The distance between the pedestals at the four corners of the position is configured to be at least wide enough for the transport vehicle to enter from the front, back, left and right directions, increasing the options for the approach path of the transport vehicle. As a result, space can be saved, and the recycled material tower incorporating the new material tower can be swung around and arranged appropriately so that the flow line of the transport vehicle becomes suitable while considering the factory site area, site shape, surrounding conditions, etc. We are proposing an asphalt plant that makes it possible and considers space saving and layout flexibility.

Jikkenhei 6-63606 Gazette Japanese Unexamined Patent Publication No. 2015-227598 Japanese Unexamined Patent Publication No. 2017-198041

However, in the asphalt plant of Patent Document 3 above, the structure has become slightly complicated as the new material tower is incorporated into the elevated pedestal of the recycled material tower and the two elevated pedestals that have been conventionally provided are integrated into one. Therefore, it is difficult to unitize the new material tower, and there is a problem that the assembly work period becomes long. When installing an asphalt plant, what is required is space saving, layout flexibility, short construction period, consideration for the surrounding environment, aesthetics, etc., so further improvement is desired.

In view of the above points, it is an object of the present invention to provide a flexible asphalt plant that can save space and shorten the construction period at the time of plant installation.

In order to solve the above problems, in the asphalt plant according to claim 1 according to the present invention, a new material weighing unit, a new material storage lower unit, a new material storage upper unit, which are of a size that can be transported by a vehicle and have a substantially rectangular parallelepiped shape, A new material tower formed by sequentially stacking vibrating sieve units, a waste material dryer that heats waste material in the vicinity of the new material tower, a recycled material storage bin that stores recycled material that has been heated and regenerated by the waste material dryer, and a reclaimed material weighing. An asphalt plant equipped with a tank and mixed with a weighed recycled material into a new material to produce an asphalt mixture. The recycled material storage bin and the recycled material measuring tank are a recycled material measuring unit, a recycled material storage lower unit, and a recycled material storage lower unit. The material storage intermediate unit and the recycled material storage upper unit were separately formed to form a recycled material tower, and the height size of the unit of at least the same level of the new material tower and the recycled material tower was formed to be substantially the same, and a mixer was mounted. It is characterized in that the long side portions of the new material tower and the recycled material tower are arranged and connected to each other so as to face each other on the mixer stand to form an integrated structure.

Further, in the asphalt plant according to claim 2 according to the present invention, the mixer mounted on the mixer pedestal is arranged at a substantially central position of the mixer pedestal in a plan view, and a new material measuring tank and a recycled material measuring tank are directly above the mixer. It is characterized by arranging and side by side.

Further, in the asphalt plant according to claim 3 according to the present invention, an elevated pedestal having substantially the same height as the recycled material tower is arranged side by side on the side portion of the recycled material tower, and the waste material dryer is mounted on the upper portion of the elevated pedestal. At the same time, a new material dryer for heating the new material is arranged in a space directly under the waste material dryer in a direction substantially orthogonal to the waste material dryer.

According to the asphalt plant according to claim 1 according to the present invention, the recycled material storage bin and the recycled material measuring tank are divided into a recycled material measuring unit, a recycled material storage lower unit, a recycled material storage intermediate unit, and a recycled material storage upper unit. The height and size of the units of at least the same level of the new material tower and the recycled material tower are formed to be substantially the same, and the long sides of the units of the new material tower and the recycled material tower are formed on the mixer stand. Since the parts are placed facing each other and connected to form an integrated structure, the new material tower and the recycled material tower can be assembled together in close contact with each other to save space when installing the plant. By adopting a unit structure, both can be assembled efficiently and the construction period can be expected to be shortened.

Further, according to the asphalt plant according to claim 2 according to the present invention, the mixer mounted on the mixer pedestal is arranged at a substantially central position of the mixer pedestal in a plan view, and a new material measuring tank and a recycled material are directly above the mixer. Since the measuring tanks are arranged side by side, the approach passage of the asphalt mixture transport vehicle can be selected in either the front-back direction or the left-right direction below the mixer stand, and the plant can be laid out so that the flow line of the transport vehicle is suitable. It will be possible.

Further, according to the asphalt plant according to claim 3 according to the present invention, an elevated pedestal having substantially the same height as the recycled material tower is arranged side by side on the side portion of the recycled material tower, and the waste material dryer is placed on the upper portion of the elevated pedestal. The new material dryer that heats the new material is placed in the space directly under the waste material dryer in a direction substantially orthogonal to the waste material dryer, so that the dead space directly under the waste material dryer can be effectively utilized to place the new material dryer. , Further space saving of the plant can be expected.

It is a schematic front view which shows one Example of the asphalt plant which concerns on this invention. It is a schematic right side view of the same as above. It is a schematic rear view of the same as above. It is a schematic plan view of the same as above. It is a reference perspective view which shows the state which each unit of a new material tower and a recycled material tower is separated.

In the asphalt plant according to the present invention, a new material weighing tank has a length, width, and height that can be transported on public roads by a vehicle such as a trailer, and is in a substantially rectangular parallelepiped shape that can be stacked as it is. New material weighing unit with a new material weighing unit, new material storage lower unit with a chute and discharge gate at the bottom of the new material storage bin, new material storage upper unit with a new material storage bin upper part, and a vibrating sieve with a vibrating sieve It is equipped with a new material tower made by stacking units in sequence.

Further, a waste material dryer for heating and regenerating the waste material, a recycled material storage bottle for storing the recycled material heated and regenerated by the waste material dryer, and a recycled material measuring tank are provided in the vicinity of the new material tower. Of these, the recycled material storage bottle and the recycled material measuring tank are divided into a recycled material measuring unit, a recycled material storage lower unit, a recycled material storage intermediate unit, and a recycled material storage upper unit to form a recycled material tower.

Further, the height sizes of the units of at least the same level of the new material tower and the recycled material tower are formed to be substantially the same, and the long sides of the units of the new material tower and the recycled material tower are placed on the mixer pedestal on which the mixer is mounted. The parts are arranged and connected so as to face each other to form an integrated structure.

As a result, the new material tower and the recycled material tower can be integrally assembled in a state of being in close contact with each other without any gaps, which saves space when the plant is installed, and also extends to the connected new material tower and the recycled material tower. The floor of the floor will be flat, and workers will be able to easily move between the towers, making it easier to use, and the sense of unity of the plant will increase, which can be expected to improve the aesthetics.

Further, preferably, pedestal pedestals are provided at the four corners below the mixer pedestal so that the distance between the pedestal pedestals is at least wide enough for the asphalt mixture transport vehicle to enter from the front-rear and left-right directions, and the mixer pedestal The mixer to be mounted is arranged at a substantially central position of the mixer pedestal in a plan view so that the transport vehicle can receive the load regardless of the approach passage in the front-rear direction or the left-right direction, and the new material tower is directly above the mixer. The new material measuring tank and the recycled material measuring tank of the recycled material tower may be arranged side by side. This makes it possible to increase the options for the approach passage of the asphalt mixture transport vehicle and to lay out the plant so that the flow line of the transport vehicle is suitable.

Further, preferably, an elevated stand having substantially the same height as the recycled material tower is arranged side by side on the side portion of the recycled material tower, the waste material dryer is mounted on the upper portion of the elevated stand, and the material is discharged on the downstream side of the waste material dryer. The outlet is arranged so as to face the upper input port of the recycled material storage bin of the recycled material tower, and a new material dryer for heating the new material is arranged in a direction substantially orthogonal to the waste material dryer in the above-ground space directly below the waste material dryer. It is good to do it. As a result, a new material dryer can be placed by effectively utilizing the dead space directly under the waste material dryer, and further compactness and space saving of the plant can be expected. A bug filter can be further installed above the new material dryer, and in that case, further space saving becomes possible.

Then, at the time of plant installation, each unit constituting the new material tower and the recycled material tower is manufactured in advance at the plant manufacturing factory. At this time, since each unit is designed to be of a size that can be carried by a vehicle such as a trailer, the unit can be carried to the installation site as it is. Next, after installing the mixer pedestal across the approach passage of the asphalt mixture transport vehicle provided at the installation site, the long sides of each unit of the new material tower and the recycled material tower brought in from the factory on the mixer pedestal. The parts are placed facing each other and connected to form an integrated structure.

In this way, the new material tower and the recycled material tower both form a unit having a size that can be transported by a vehicle in an integrated structure by arranging and connecting the long sides of the units so as to face each other on the mixer stand. Therefore, the new material tower and the recycled material tower can be assembled compactly to save space in the plant, and each of the towers can be efficiently assembled by forming a unit structure, which can be expected to shorten the construction period. In addition, by carrying the unit to the installation site, it can be expected to reduce the occurrence of problems such as misdelivery and missing items.

In addition, for example, in the case of using for manufacturing of expressways, etc., when the plant is relocated along with the extension of the road, after dismantling the unit, it is carried to the next installation site as it is, and assembled and constructed in the same manner as described above. It is suitable because it can be easily reconstructed in a relatively short period of time.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 in the figure is an asphalt plant that manufactures an asphalt mixture that is a road pavement material, and a mixer pedestal 2 is installed across the approach passage of the asphalt mixture transport vehicle T, and the upper part of the mixer pedestal 2 is abbreviated. A mixer 4, a new material tower 5 composed of a plurality of units described later, and a recycled material tower 6 are arranged side by side on the square flat plate-shaped base portion 3.

The new material tower 5 has a length, width, and height that can be transported on public roads by a vehicle such as a trailer, and the new material measuring tank 8 is contained in a substantially rectangular parallelepiped machine frame 7a to 7d that can be stacked as it is. New material weighing unit 9 with a new material storage bin 10, a new material storage lower unit 11 with a new material storage bin lower part 10a forming a new material storage bin 10, a new material storage upper unit 12 with a new material storage bin upper part 10b, and vibration. The vibrating sieve units 14 containing the sieve 13 are sequentially stacked upward to form a tower shape composed of four layers.

On the other hand, similarly to the above, the recycled material tower 6 is a recycled material tower 6 in which a recycled material measuring tank 16 is installed in a machine frame 15a to 15d having a substantially rectangular parallelepiped shape that can be transported by a vehicle such as a trailer and can be stacked. The material measuring unit 17, the recycled material storage lower unit 19 including the recycled material storage bin lower portion 18a forming the recycled material storage bin 18, the recycled material storage intermediate unit 20 containing the recycled material storage bin intermediate portion 18b, and the recycled material storage bin. The recycled material storage upper unit 21 having the upper part 18c inside is sequentially stacked upward to form a tower shape having four layers like the new material tower 5.

As described above, the new material storage bins 10 (10a, 10b) and the recycled material storage bins 18 (18a, 18b, 18c) are divided into a plurality of layers and each of them is housed in a separate unit. A flange portion is provided at each location, and a packing or the like is provided on the flange portion so that when each unit is connected, the units are in close contact with each other without leakage or the like.

Further, the height size of the unit of at least the same level of the new material tower 5 and the recycled material tower 6 is formed to be substantially the same, and the new material tower 5 and the recycled material tower 5 are regenerated on the base portion 3 above the mixer stand 2. The long sides of each unit of the material tower 6 are arranged and connected so as to face each other, and in this embodiment, they have an integrated structure so as to have a substantially square shape in a plan view.

As a result, the new material tower 5 and the recycled material tower 6 can be integrally assembled without a gap, space can be saved at the time of plant installation, and each layer of the connected new material tower 5 and the recycled material tower 6 can be achieved. The floor will be flat, making it easy to use for maintenance. In addition, a part of the machine frame can be standardized, which facilitates design and manufacturing, and can be expected to reduce costs.

The four corners below the mixer pedestal 2 are provided with pedestal pedestals 22 for supporting the pedestal, and the distance between the pedestal pedestals 22 is configured to be at least wide enough for the asphalt mixture transport vehicle T to enter from the front-rear and left-right directions. In addition, the mixer 4 mounted on the base portion 3 on the upper portion of the mixer stand 2 can be suitably received in a plan view regardless of whether the approach passage of the transport vehicle T is in the front-rear direction or in the left-right direction. A new material measuring tank 8 which is arranged at a substantially central position of a base portion 3 on the upper part of the mixer stand 2 and is installed in the new material measuring unit 9 and a recycled material measuring tank which is installed in the recycled material measuring unit 17 directly above the mixer 4. 16 and 16 are arranged side by side.

As a result, as shown in FIG. 4, the approach passage of the transport vehicle T to the lower part of the mixer stand 2 can be selected in either the front-rear direction or the left-right direction. For example, the factory site where it is difficult to secure the flow line of the transport vehicle T. The plant can be arranged relatively easily even in the corners of the plant, increasing the degree of freedom and flexibility of the plant layout.

Further, an elevated base 23 having substantially the same height as the recycled material tower 6 is arranged side by side on the side portion of the recycled material tower 6. The elevated base 23 is composed of a base plate body 24a extending substantially horizontally from the top of the recycled material tower 6 and a pedestal 25 supporting the free end portion of the base plate body 24a from the ground surface. A gap space is formed below the plate body 24a.

A vertical transport device 26 is provided on the side of the elevated platform 23, and a waste material dryer 27 that heats and regenerates the waste material supplied from the vertical transport device 26 is mounted on the base plate body 24a of the elevated platform 23. The material discharge port at the downstream end of the waste material dryer 27 faces the upper input port of the recycled material storage bottle 18, and the recycled material discharged from the waste material dryer 27 is dropped into the recycled material storage bottle 18 by its own weight. It is arranged so that it can be directly thrown in. As shown in the figure, the connecting portion between the waste material dryer 27 and the recycled material storage bin 18 is provided with a substantially cylindrical flue 28 so as to cover the connecting portion, and the upper part of the flue 28 and a bug described later. The filter is connected by a flue (not shown) that is piped separately.

In this embodiment, similarly to the base plate body 24a, the base plate body 24b extends in a substantially horizontal direction from the top of the new material tower 5, and the waste material dryer 27 is provided on the base plate body 24b. A blower (not shown) that supplies combustion air to the burner can be installed, and raindrops are reduced from being applied to the lower bag filter and new dryer, which will be described later, to improve heat retention. Therefore, it can be expected to suppress dew condensation.

Further, in the space on the ground side directly below the waste material dryer 27 mounted on the base plate body 24a of the elevated base 23, a new material dryer 29 for heating the new material is arranged in a direction substantially orthogonal to the waste material dryer 27. The directions of the waste material dryer 27 and the new material dryer 29 are based on the longitudinal direction of the dryer (material flow direction). Further, a vertical transfer device 30 is installed to supply the new material heated by the new material dryer 29 to the vibrating sieve 13 in the vibrating sieve unit 14 in the upper layer of the new material tower 5. Further, a bug filter 32, which is a dust collector, is installed in the space above the new material dryer 29 (the gap between the new material dryer 29 and the base plates 24a and 24b) via a gantry 31, and the new material dryer 29 and smoke. It is connected by road 33.

As a result, the new material dryer 29 and the bug filter 32 can be arranged by effectively utilizing the dead space directly under the waste material dryer 27, and further compactness and space saving of the plant can be expected.

Further, in this embodiment, an elevated base 23 is installed substantially parallel to the longitudinal direction (material flow direction) of the vibrating sieve 13 mounted on the new material tower 5 and on the material input port side thereof, and is mounted on the elevated base 23. Since the waste material dryer 27 was arranged (approximately parallel to the longitudinal direction of the vibrating sieve 13), as shown in FIGS. 2 and 4, the area directly below the waste material dryer 27 was removed from the entry passage of the transport vehicle T, and the new material was removed. By arranging the dryer 29 directly under the waste material dryer 27, the space can be saved and the approach passage of the transport vehicle T is not blocked, which is more suitable.

The installation position of the elevated platform 23 is not necessarily limited to the above position, and for example, as in the conventional device of Patent Document 1, one of the approach passages of the transport vehicle T can be straddled. It is also possible to install the vibrating sieve 13 in a direction substantially orthogonal to the longitudinal direction, and arrange the waste material dryer 27 on the elevated base 23.

When the asphalt plant 1 having the above configuration is installed, the new material measuring unit 9, the new material storage lower unit 11, the new material storage upper unit 12, the vibrating sieve unit 14, and the recycled material constituting the new material tower 5 are installed. The recycled material measuring unit 17, the recycled material storage lower unit 19, the recycled material storage intermediate unit 20, and the recycled material storage upper unit 21 constituting the tower 6 are manufactured in advance at the plant manufacturing factory. At this time, each unit is designed and manufactured in a size that can be transported by a vehicle such as a trailer and in a substantially rectangular parallelepiped shape that can be stacked as it is by a crane or the like.

Next, after installing the mixer pedestal 2 across the approach passage of the asphalt mixture transport vehicle T provided at the installation site, the new material tower 5 and the recycled material tower carried from the plant manufacturing factory are placed on the mixer pedestal 2. The long sides of each of the units of No. 6 are arranged and connected so as to face each other to form an integrated structure.

Next, an elevated base 23 is arranged side by side on the side of the recycled material tower 6, and the waste material dryer 27 is mounted on the elevated base 23, while the new material dryer 29 and the bug filter are placed in the above-ground space directly below the waste material dryer 27. 32 is arranged. Then, the vertical transfer device 26 for supplying waste materials, the vertical transfer device 30 for supplying new materials, and the like are installed to complete the installation of the plant.

As described above, according to the asphalt plant 1, the new material tower 4 and the recycled material tower 5 can be compactly assembled to save space in the plant, and each of the towers has a unit structure for efficiency. It is well assembled and can be expected to shorten the construction period. Compared with the asphalt plant of Patent Document 1 filed earlier by the applicant, the installation area of the plant can be suppressed to about 70%, space can be saved, and the construction period is about 70%. I was able to shorten it to a degree.

The present invention can be widely used in an asphalt plant capable of producing an asphalt mixture in which a recycled material is mixed with a new material.

1 ... Asphalt plant 2 ... Mixer stand 4 ... Mixer 5 ... New material tower 6 ... Recycled material tower 8 ... New material weighing tank 9 ... New material weighing unit 10 ... New material storage bin 11 ... New material storage lower unit 12 ... New material Storage upper unit 13 ... Vibration sieve 14 ... Vibration sieve unit 16 ... Recycled material measuring tank 17 ... Recycled material measuring unit 18 ... Recycled material storage bin 19 ... Recycled material storage lower unit 20 ... Recycled material storage intermediate unit 21 ... Recycled material storage upper Unit 22 ... Stand pedestal (mixer stand) 23 ... Elevated base 26, 30 ... Vertical transport device 27 ... Waste material dryer 29 ... New material dryer 32 ... Bug filter

Claims (3)

A new material tower that is a size that can be transported by vehicle and has a substantially rectangular parallelepiped shape, a new material storage lower unit, a new material storage upper unit, and a vibrating sieve unit that are stacked in sequence, and waste materials in the vicinity of the new material tower. A waste material dryer for heating the asphalt, a recycled material storage bin for storing the recycled material heated and regenerated by the waste material dryer, and a recycled material measuring tank are provided, and the weighed recycled material is mixed with the new material to produce an asphalt mixture. In an asphalt plant, the recycled material storage bin and the recycled material measuring tank are divided into a recycled material measuring unit, a recycled material storage lower unit, a recycled material storage intermediate unit, and a recycled material storage upper unit to form a recycled material tower. The height size of the units of at least the same level of the new material tower and the recycled material tower is formed to be substantially the same, and the long sides of the units of the new material tower and the recycled material tower are placed on the mixer stand on which the mixer is mounted. An asphalt plant characterized by being placed facing each other and connected to form an integrated structure. The first aspect of the present invention, wherein the mixer mounted on the mixer pedestal is arranged at a substantially central position of the mixer pedestal in a plan view, and the new material measuring tank and the recycled material measuring tank are arranged side by side directly above the mixer. Asphalt plant. An elevated stand having substantially the same height as the recycled material tower is arranged side by side on the side of the recycled material tower, the waste material dryer is mounted on the upper part of the elevated base, and the new material is heated in the space directly under the waste material dryer. The asphalt plant according to claim 1 or 2, wherein the new material dryer is arranged in a direction substantially orthogonal to the waste material dryer.

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