JPH0489903A - Manufacturing of asphalt compound and manufacturing device thereof - Google Patents

Abstract

PURPOSE:To reduce noise pollution by establishing a compound manufacturing plant excluding a heating and drying system such as a burner, an exhauster and the like, and mixing heated aggregate supplied from a heated aggregate supply plant with a melted asphalt and the like for adjusting. CONSTITUTION:A compound manufacturing plant 21 of less noise is established by excluding a heating and drying system such as a burner, an exhauster and the like that will be the source of noise. A heated aggregate stored in a storage bin 10 of a heated aggregate supply plant 1 is issued by diameter sizes and stored by diameter sizes in a storage silo 17 provided on the side portion of a plant body 3. The heated aggregate of a desired diameter is issued based on a shipping program, conveyed to the compound manufacturing plant 21 and stored in a storage bin 22 by diameter sizes. In response to a request for shipment, a specified amount of heated aggregate is picked out, charged into a mixer 26 together with stone dust and melted asphalt separately weighed, mixed and adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method and apparatus for manufacturing asphalt mixture, which is a road paving material.

[Conventional technology] Asphalt plants that manufacture asphalt mixture are
A burner sends hot air to the dryer, which is an aggregate heating device.
In addition, the installation location is restricted to areas similar to industrial areas because it includes equipment that is a source of high noise, such as an exhaust fan that sucks and exhausts the exhaust gas that has passed through the dryer.

[Problems to be Solved by the Present Invention] Therefore, there has been a problem in that it is quite difficult to install an asphalt plant in an area near the city center where noise regulations are strict.

In view of the above-mentioned points, it is an object of the present invention to provide a manufacturing method and a manufacturing apparatus for asphalt mixture, which enable manufacturing and shipping of asphalt mixture even in the suburbs of urban areas.

[Means for Solving the Problems] In order to achieve the above object, the present invention installs a storage silo for storing heated aggregate on the side of the plant body of an asphalt plant serving as a heated aggregate supply plant, and A vertical conveyance device is installed to transport the heated aggregate discharged from the mixer mounted on the storage silo to the storage silo, and a mixed material manufacturing plant is installed separately from the heated aggregate supply plant, and the mixed material manufacturing plant is A storage bin for storing heated aggregates transported from a heated aggregate supply plant by particle size, an aggregate measuring tank disposed below the storage bin, a measuring tank for measuring stone powder and asphalt, and a measuring tank below the measuring tank. It consists of a mixer etc. arranged in the

[Function] According to the present invention, a mixture manufacturing plant is installed in a place where it is impossible to install an asphalt plant due to noise regulations, and eliminates heating drying systems such as burners and exhaust fans that cause noise.
The purpose is to supply heated aggregate to the mixed material manufacturing plant from a heated aggregate supply plant. First, the heated aggregate stored in the storage bins of the asphalt plant, which serves as the heated aggregate supply plant, is discharged according to particle size, and a small amount is melted as necessary in a lower-level mixer to prevent dust from scattering as much as possible during transportation. After adding asphalt, it is transported by a vertical transport device to a storage silo installed on the side of the plant body, and stored according to particle size. If the asphalt mixture is scheduled to be shipped at the composite material manufacturing plant, aggregate with a desired particle size is discharged from the storage silo and transported to the composite material manufacturing plant. In the composite material manufacturing plant, this heated aggregate is transported to the upper part of the plant and stored in storage bins according to particle size. When there is a request for shipment of asphalt mix from the construction site, a predetermined amount of heated aggregate is weighed from the storage bin based on the mix composition requested for shipment, and then put into a mixer together with separately weighed stone powder and molten asphalt. Mix and adjust;
A specified asphalt mixture is manufactured.

[Example] Embodiments of the present invention will be described below based on the drawings.

(3) is a known asphalt plant that serves as a heated aggregate supply plant, including a dryer 2 that heats and dries the aggregate, a dust collector (not shown) that captures the dust scattered from the dryer 2, and a storage device that stores the heated aggregate. , measuring and mixing plant body 3
, and other incidental equipment.

The dryer 2 rotatably supports a cylindrical drum having a large number of scraping blades around its inner periphery, and scrapes up the cold aggregate supplied from the aggregate hopper 4 via the belt conveyor 5. After heating the aggregate to a desired temperature by bringing it into contact with hot air sent from the burner 6 while stirring it up with blades and flowing down the drum while dropping it like a curtain,
It is supplied to the plant main body 3 via the hot elevator 7. The plant main body 3 has a guide screen 1 for the hot elevator 7.
- A storage bin 10 equipped with a vibrating sieve 9 that sieves the heated aggregate supplied from the gate 8 according to particle size, a stone powder storage bin 12 that stores the stone powder supplied from the stone powder elevator 1), and a stone powder storage bin 12 arranged below these. It is composed of an aggregate measuring tank 13, a stone powder measuring tank 14, an asphalt measuring tank 15, a mixer I6, etc.

A plurality of storage silos 17 having a heating and heat-retaining structure are installed on the side of the plant main body 3. These storage silos are for storing heated aggregates according to particle size, and it is usually preferable that the number of silos corresponds to the number of storage bin rooms in a composite material manufacturing plant, which will be described later. And mixer 1 installed in plant main body 3
A vertical conveyance device 18 is provided for conveying the heated aggregate discharged from 6 to a storage silo 17, and this vertical conveyance device 18 attaches a cable to a transport packet 19, and connects the cable to a winch. The heated aggregate is transported and stored in the storage silo 17 by being rolled in and fed out to travel on the traveling rail 20, and reciprocated between the lower part of the mixer 16 and the upper part of the input port of the storage silo 17.

Reference numeral 21 denotes a mixed material manufacturing plant installed at a location away from the heated aggregate supply plant 1, and temporarily stores the heated aggregate that is discharged and transported from the storage silo 17 of the heated aggregate supply plant 1 to the particle size side. Then, when the asphalt mixture is required, the asphalt mixture is appropriately measured and mixed to produce the asphalt mixture. Reference numeral 22 is a large-capacity storage bottle for storing heated aggregate on the particle size side, and has a structure in which the inside is partitioned and several types of materials can be heated and kept warm. Above the storage bin 22, heated aggregate transported by a vertical transport device 23 is stored in an arbitrary storage bin 22.
A distribution chute 24 is provided to distribute the heated aggregate to storage bins 22 on the grain size side.
to be stored. An aggregate measuring tank 25 is disposed below the storage bin 22, and the heated aggregate measured in a predetermined amount in the aggregate measuring tank 25 is fed into a mixer 26 located below, and at the same time, it is transported by a stone powder elevator 27. A predetermined amount of stone powder is discharged from the stone powder storage bin 28 that stores stone powder, and the stone powder is transferred to the stone powder measuring tank 29.
The molten asphalt is measured in an asphalt measuring tank 30 and added to and mixed with the aggregate in the mixer 26 to produce an asphalt mixture.

Next, a method for manufacturing asphalt mixture in the mixture production plant 21 will be described. First, it is necessary to manufacture heated aggregate for the mixed material manufacturing plant 21 in the asphalt plant 1 of the heated aggregate supply plant. This manufacturing method is similar to that of conventional asphalt plants, and the desired aggregate is cut out from an aggregate hopper 4 that stores aggregate on the particle size side, and is supplied to a dryer 2 where it is heated and dried. The particles are transported to the upper part of the plant main body 3 by an elevator 7, sieved by a vibrating sieve 9, and stored in a storage bin 10 on the particle size side.
to be stored. The heated aggregate stored in the storage bin 10 is discharged to the particle size side and put into the mixer 16, and a small amount of molten asphalt is weighed in the asphalt measuring tank 15 as necessary to prevent dust scattering during transportation. and mix it in the mixer 16. Then, the heated aggregate discharged from the mixer 16 is loaded into a transport packet 19 and transported to the upper part of the storage silo 17 by the vertical transport device 18.
The heated aggregate is stored in a predetermined storage silo 17 on the particle size side (.

Then, when there is a shipping request from the mixed material manufacturing plant 21, the heated aggregate is discharged in a predetermined amount from the desired storage silo 17,
Loaded onto a waiting truck and moved to the composite material manufacturing plant 21
Transport to. At this time, it is preferable to install a measuring device below the storage silo 17 and measure the amount to be dispensed while loading onto the truck.

The heated aggregate transported to the mixed material manufacturing plant 21 is transported to the upper part of the plant by a vertical transport device 23, distributed through a distribution chute 24, and stored in storage bins 22 for each particle size.
stored in Then, one hatch of heated aggregate is discharged from the storage bin 22 and weighed in the aggregate measuring tank 25 based on the mix composition based on the shipping request, for example, the aggregate mix composition such as dense grain size, coarse grain size, modified tobeka, etc. At the same time, the stone powder weighed in the stone powder measuring tank 19 and the molten asphalt weighed in the asphalt measuring tank 30 are fed into the mixer 26.
6 and mix and adjust to produce the desired asphalt mixture.

Further, when the amount stored in the storage bin 22 decreases due to shipping, a desired amount of heated aggregate is discharged from the storage silo 17 of the heated aggregate supply block 1-1 and supplied to the composite material manufacturing plant 21.

According to the present invention, at the same time as the asphalt mixture is shipped from the asphalt plant of the heated aggregate supply plant 1, the heated aggregate can be discharged from the storage silo 17 and shipped to the mixture manufacturing plant 21.

[Effects of the Invention] As described above, according to the present invention, a mixture manufacturing plant is installed that has few noise sources by eliminating heating drying systems such as noise sources such as banners and exhaust fans. Since heated aggregate is to be supplied from an asphalt plant that serves as an aggregate supply plant, a mixed material manufacturing plant with few noise sources can be installed in the suburbs of urban areas without any problems in terms of noise pollution. It is.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a heated aggregate supply plant and a composite material manufacturing plant showing one embodiment of the present invention. ■... Heated aggregate supply plant 2... Dryer 3
... Plant body 9 ... Vibrating sieve 10 ... Storage bin 13 ... Aggregate measuring tank 14 ... - Stone powder measuring tank
15... Asphalt measuring tank 16... Mixer 1
7...Storage silo 18...Vertical conveyance device 19.
・Transportation packet 21 ・Mixture manufacturing plant 22
... Storage bin 23 Vertical conveyance device 24 Distribution chute 25 ... Aggregate measuring tank 26 ... Mixer 29 ...
・Stone powder measuring tank 30... Asphalt measuring tank

Claims (2)

[Claims] (1) Dispense the heated aggregate stored in the storage bin of the asphalt plant, which is the heated aggregate supply plant, by particle size,
This heated aggregate is stored by particle size in a storage silo installed on the side of the plant main body using a vertical conveyance device, and heated aggregate of a desired particle size is discharged from the storage silo as necessary, and the heated aggregate is transferred to a heated aggregate supply plant. The aggregate is transported to a mixed material manufacturing plant installed separately from the factory, and stored in storage bins according to particle size at the mixed material manufacturing plant. When asphalt mixed material is required, a predetermined amount of heated aggregate is heated from the storage bin based on the desired composition. A method for producing an asphalt mixture, characterized in that the asphalt mixture is manufactured by weighing and putting it into a mixer disposed below and mixing while adding molten asphalt etc. (2) A storage silo for storing heated aggregate is installed on the side of the asphalt plant main body, which is a heated aggregate supply plant, and the heated aggregate discharged from the mixer mounted on the plant main body is transported to the storage silo. A vertical conveying device is installed to carry out the heating, and a mixed material manufacturing plant is installed separately from the heated aggregate supply plant, and the mixed material manufacturing plant stores the heated aggregates transported from the heated aggregate supply plant according to particle size. a storage bin, an aggregate measuring tank disposed below the storage bin, and a measuring tank for measuring stone powder and asphalt;
An asphalt mixture manufacturing apparatus characterized by comprising a mixer or the like disposed below the measuring tank.