KR20030019757A - batch type cold mix recycling asphalt concrete manufacture apparatus and method - Google Patents

Abstract

PURPOSE: An apparatus and a process for stably preparing ascon at room temperature are provided to supply coarse materials and fine materials containing waste materials at once to effectively coat a mixture of both materials in restricted amount. CONSTITUTION: The apparatus comprises a number of hoppers(1,2) receiving different constructional and/or waste materials with different diameters; a transportation element(3) mounted at lower part of the hoppers and to transfer the materials from the hoppers; a mixing element(5) at front end of the transportation element to admix and discharge a mixture of water, asphalt and surfactant to form an emulsifying agent; and an emulsifying agent supplying element(6). The hoppers are arranged from one for coarse materials to another for fine materials in order to form an integrated arrangement for supplying the materials to the transportation element overall.

Description

Batch type cold mix recycling asphalt concrete manufacture apparatus and method

The present invention relates to a room temperature ascon production apparatus and method that can be commercialized according to the appropriate particle size of the road pavement in the cold state without heating the waste ascon, in particular, new aggregates and waste aggregates are collectively added efficiently to a predetermined emulsion The present invention relates to an apparatus and method for manufacturing a room temperature regenerated ascon which can be coated.

In general, the asphalt mixture is a hot-mix asphalt concrete prepared by applying heat, cutback asphalt prepared by using petroleum as a solvent, and room temperature emulsion asphalt prepared by using water as a solvent. Cold-mix bituminous emulsion asphalt.

The heat-mixed ascon requires a large amount of heat during the manufacturing process, in particular, due to the rapid increase in traffic exceeding the capacity of the road, the oxidation degradation of asphalt components during manufacture hardens and alters the asphalt mixture during winter Causes asphalt cracks. In addition, the cutback asphalt can be manufactured at room temperature without heating, but must use expensive petroleum as a solvent, and since the oil content is high, the oil is discharged into rivers and soil during the curing process after construction, which contaminates the environment. The situation is suppressing its use.

As a part to overcome the above problems, a room temperature emulsion asphalt mixture production apparatus has been proposed that can produce a product having a particle size suitable for a road paving agent in a cold state, that is, at room temperature without heating the aggregate and asphalt, The mixture obtained does not need to be heated to achieve energy savings, and is environmentally friendly and can continuously use waste ascon resources.

In addition, the production of room temperature ascon does not cause oxidative deterioration effect that directly affects the aging of asphalt. After use, the remaining ascon should be disposed of. However, in case of room temperature ascon, it is very economical because it is not affected by temperature.

As a device for producing a room temperature asphalt mixture having such an advantage, it is generally composed of one feed hopper, a mixer, and a loading conveyor, each of which is separated separately.

However, the above-mentioned normal temperature emulsion asphalt mixture manufacturing apparatus is composed of a single feed hopper and a mixer, so that the particle size distribution of the aggregates is not free to adjust, and since the respective components are separately separated, there is a problem of difficulty in moving and installing. .

In order to solve the above problems, a "normal temperature emulsion asphalt production apparatus" of the patent registration No. 0297595 by the present applicant has been proposed. As shown in FIG. 1, the apparatus includes three aggregated hoppers 101, 102, and 103, each containing aggregates of different particle sizes, continuously feeding the inclined conveyor 104, and mixing and feeding the same into the mixer 105. As a continuous room temperature emulsion asphalt manufacturing apparatus for supplying water and emulsion asphalt to the mixer 105, the particle size can be adjusted and the quality can be improved, and the wheel can be lifted on the device to facilitate movement. To implement the effect.

However, the continuous room temperature emulsion asphalt production apparatus of the above is not easy to withdraw when the waste aggregate is withdrawn from the inverted trapezoidal hopper, the viscous waste aggregate or new aggregate containing water is attached to the slope of the hopper. Bridge phenomenon occurs.

In other words, recycled aggregates corresponding to waste aggregates made by crushing and sorting waste ascon contain a large amount of residual particles and asphalt components, and thus have mutual adhesion due to atmospheric temperature and self weight. In addition, the waste aggregate is lumped together and compacted in the hopper due to the characteristics of only the bottom portion of the hopper poured on the slope, sticky waste aggregate remains, the supply of aggregate is frequently stopped, making normal production difficult.

In addition, coarse aggregates, intermediate aggregates, and fine aggregates respectively introduced into the three hoppers are continuously fed to the conveyor while being mixed and transported to have a predetermined amount of emulsion, and there is a problem in that they are not easily mixed in a mixer.

Therefore, the present invention is devised to solve the above problems, and is easy to separate and withdraw to be attached to the inclined surface of each hopper, while the aggregate having a different particle size injected into each separate hopper Batch type room temperature recycled ascon which has a stable amount of coarse aggregates and fine aggregates with different particle sizes to efficiently obtain stable ascon products It is an object to provide a manufacturing apparatus and method.

1 is a schematic view showing an embodiment of a continuous room temperature emulsion asphalt production apparatus according to the prior art.

Figure 2 is a schematic process diagram showing the configuration of one embodiment of a batch type room temperature recycled ascon production apparatus according to the present invention.

Figure 3a and Figure 3b is a front view and a plan view of a batch type normal temperature recycled ascon production apparatus according to the present invention.

Figure 4 is a schematic front view showing the configuration of the waste ascon crushing device that is the main portion of the present invention.

5 is a configuration diagram of a milling shaft which is a main part of the grinding apparatus.

Figures 6a and 6b is an operating state of the rammer, which is the main part of the grinding device.

7A to 7C are a front view, a plan view and a side view showing the configuration of a hopper which is the main part of the present invention.

* Explanation of symbols for the main parts of the drawings

1: Hopper 2: Scale Hopper

3: belt conveyor 4: vibrator

5: Mixer 6: Emulsion Feeder

7: Additive feeder 8: Pigment powder feeder

9: pigment liquid feeder

The present invention for achieving the above object, a plurality of hoppers each of which is injected aggregate and crushed waste aggregates of different particle diameters; A conveying means installed at a lower portion of the plurality of hoppers and conveying aggregates drawn therefrom; A mixing means installed at the distal end of the conveying means and mixing and discharging an oil agent composed of a mixture of water, asphalt, and surfactant introduced from the outside into the aggregate dropped and conveyed; It includes an oil supply means for supplying a predetermined amount of the oil in the mixing means, wherein the plurality of hoppers are arranged in the order of fine aggregate from coarse aggregate to provide a batch type room temperature regenerated ascon production apparatus supplied to the transfer means collectively do.

In addition, the present invention comprises the first step of separating the aggregate having a different particle size into coarse aggregate and fine aggregate, each of which is put into a plurality of hoppers; A second step of transferring aggregate aggregates drawn out from the respective hoppers to a mixer, wherein the aggregates are introduced into the mixer in order of fine aggregates from the coarse aggregates; A third step of mixing an oil agent and an additive in a predetermined ratio to the mixer; And a fourth step of discharging the mixed ascon from the mixer.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The batch method room temperature regenerated ascon production apparatus and method according to the present invention is to implement the fine aggregate and the fine aggregate obtained by crushing the waste ascon into a mixer in a batch and mixed in the emulsion and additives to produce a stable room temperature ascon, In the present embodiment, as shown in Figures 2 and 3, a plurality of hoppers for injecting coarse aggregates (hereinafter referred to as "crude aggregates") and fine aggregates (hereinafter referred to as "aggregate aggregates") having different particle sizes, respectively. (1); A scale hopper 2 mounted under the hopper 1 for weighing and discharging the aggregate taken out from the hopper 1 to a predetermined weight, and installed at the lower portion of the scale hopper 2 to transfer the aggregate taken out therefrom. A belt conveyor (3) is provided and collectively supplied from the hopper (1) to the belt conveyor (3) in the coarse aggregate in the order of fine aggregate.

In the present embodiment, the hopper 1 is an example of four installed in a straight line, each of the lower portion has a structure in which at least two outlets (1a) are formed. Each hopper (1) is alternatively added to any one of 13mm, 20mm, 25mm, 40mm coarse aggregate (including intermediate aggregate) and fine aggregate (including stone powder) to meet the granularity requirements of the industry standards or specifications.

In addition, the three aggregates are introduced into the hopper 1 is put into one or two hoppers of the four hoppers, the new hopper aggregates such as gravel corresponding to the coarse aggregates are put into the remaining hoppers.

Here, the fine aggregate is inputted by crushing the waste ascon lump generated in the excavation work of sand, stone powder or road, in particular, when the waste ascon is used as fine aggregate, in order to use the waste ascon lump in the ascon recycling apparatus Although it is necessary to crush waste materials by particle size, waste ascon has a seasonal limitation in crushing with jaw crusher or cone crusher due to the viscosity of asphalt, and because of this, impact crusher is used. Since crushing changes the particle size of the original asphalt mixture and increases the content of the residual particles, it causes various problems during the recycling of waste ascon. In this embodiment, the waste ascon crushing can be crushed regardless of the four seasons temperature while reducing the change of aggregate particle size. The device is adopted.

As shown in Figures 4 and 5, the crushing apparatus is a hopper (21) in which the waste ascon lump is introduced and the guide groove (21a) is formed on the inclined surface thereof; A milling shaft 22 installed horizontally on the top of the outlet of the hopper 21 and provided with a plurality of cutters at predetermined intervals on its outer circumferential surface such that the waste ascon lumps are crushed by particle size; Drive means (23) for rotating the milling shaft (22); A grid 24 installed below the outlet of the hopper 21 for discharging waste material crushed through the milling shaft 22 to a predetermined particle size; It is installed on the inclined surface of the hopper 21 is composed of a rammer device (25) for pushing the waste ascon lump to the outlet side.

Reference numeral 26 denotes a conveyor for conveying the waste material having a predetermined particle size passing through the grid to the hopper 1 side.

The rammer device 25 includes at least one cylinder 31 installed outside the side surface of the hopper 21 as shown in Figs. 6A and 6B; One side is connected to the cylinder 31, the other side enters the inside of the hopper through the guide groove of the hopper 21, the end portion is formed in a ring shape is stretched and driven in accordance with the driving of the cylinder 31 It consists of a rammer 32 that picks up the waste ascon lumps introduced into the hopper 21 and pushes them into the outlet of the hopper.

The hopper 1 in this embodiment includes a hopper body 31 having a plurality of outlets formed thereon, as shown in Figs. 7A to 7C; An opening / closing door (32) for opening and closing the outlet of the hopper body (31); It is installed at a predetermined position on the outer inclined surface of the hopper body 31, and one end thereof is fixed to the opening / closing door 32, and includes a driving cylinder 33 for opening and closing the opening / closing door by a telescopic operation.

In addition, in the configuration of the hopper 1, the hopper into which fine aggregate is introduced is further provided with a vibration device 4 for spaced apart from the aggregate attached to its inclined surface.

The vibration device 4 has a spring 36 for cushioning the outer surface of the hopper 1 and a motor 37 for providing a buffering force to the spring 36 is attached, the inner surface of the hopper 1 It consists of a diaphragm 38 which is driven up and down by the buffer force of the spring 36 and strikes the inclined surface of the hopper 1 and a rubber plate 39 mounted between the diaphragm 38 and the inclined surface to further increase the vibration efficiency.

In this embodiment, the vibration device is added as an example for removing the aggregate attached to the inclined surface of the hopper 1, but the present invention is not limited thereto, and a scraper capable of scraping down the inclined surface is also possible. Since it is a known technique that can be easily implemented by those skilled in the art, a detailed description thereof will be omitted.

At the tip of the belt conveyor 3, a mixer 5 for discharging and discharging the aggregate, which is transported and dropped, into an oil agent and an additive made of a mixture of water, asphalt, and a surfactant, and a predetermined amount inside the mixer 5 An additive supply device for supplying an additive for increasing an adhesive force of an emulsion supply device 6 for supplying an emulsion of an aggregate and an aggregate which is installed at an upper portion of the mixer 5 and is mixed with an emulsion in the interior thereof ( 7) is provided.

The emulsion supply device (6) includes an emulsion tank (11) and a supply pump (12) for driving the emulsion in the emulsion tank (11); An electric heating line (13) for heating the emulsion supplied through the supply pump (12); A three-way valve (14) installed at a predetermined position on the electric heating line (13) for converting the movement path of the emulsion to the emulsion tank (11) when the production of room temperature ascon is temporarily stopped; An emulsion scale bin (15) for metering the emulsion supplied through the three-way valve (14) to be introduced into the mixer (5) in a uniform amount; A surge tank (16) and an injection pump (17) for receiving an emulsion discharged from the emulsion scale bin (15) and for injecting an emulsion into the mixer (5) with a flow rate change due to the fluctuation of the emulsion therein; A flow rate control valve 18 for controlling the injection amount of the oil flowing into the mixer through the injection pump 17; Compressed air injector 19 for injecting the oil agent supplied through the flow control valve 18 into the mixer 5 by compressed air.

Here, the flow control valve 18 is composed of a three-way valve for converting the movement path of the emulsion to the surge tank 16 side when the production of room temperature ascon temporarily stops.

In addition, the additive supply device 7 includes a silo 21 in which additives are embedded; An outlet assisting device 22 installed at the outlet side of the lower part of the passage 21 to smoothly remove the additive; A rotary feeder 23 for supplying an additive drawn out by the discharge assisting device 22; An additive skibin (24) for measuring the additive supplied through the operation of the rotary feeder (22); It consists of a discharge valve 25 for supplying the mixer 5 with the additive metered in the additive scale bin.

On the other hand, in the present invention, the powder supply device 8 and the liquid supply device 9 for supplying a transparent pigment or pigment, etc. to the mixer in consideration of the variety of room temperature recycled ascon is further mounted.

The powder supply device 8 includes a powder straw 41 in which a powder such as a dye is stored, a powder scale bin 42 for measuring the amount of the powder drawn out from the powder straw 41, and It consists of a discharge door 43 which opens and closes so that the powder measured in the powder scale bin 42 can be added to the aggregate conveyed through the belt conveyor 3.

The liquid supply device 9 includes a liquid tank 51 in which a liquid such as a transparent pigment is stored, a liquid supply pump 52 for supplying a liquid in the liquid tank 51 into a mixer, and a liquid pump. A liquid straw 53 for storing the supplied liquid; A liquid scale bin (54) for measuring the amount of liquid drawn out from the liquid straw (53); It consists of a discharge valve 55 which opens and closes to supply the liquid metered in the liquid scale bin 54 into the mixer 5.

The amount of powder or liquid supplied from the powder supply device 8 and the liquid input device 9 is determined so as to make up a ratio of about 1% to the total ascon.

The process flow of the present invention configured as described above will be described with reference to FIG.

First, each of the four hoppers (1) is put in accordance with the size of the particle size requiring the aggregate having a different particle size. At this time, fine aggregates (including stone powder) are put into one or two hoppers of the four hoppers, and coarse aggregates (including intermediate aggregates) are put into the remaining hoppers. When the fine aggregate is waste ascone, the fine aggregate is put into a crusher, and crushed into granules necessary for the production of room temperature ascone and put into the hopper 1.

The new aggregate and fine aggregate injected into the hopper 1 are weighed in the weighing hopper 2 installed directly under the hopper 1 and are collectively supplied to the conveyor 3 and transported. When the aggregate is withdrawn from the hopper 1, waste ascon aggregate or new aggregate attached to the inclined surface by adding a vibration force to the inclined surface of the hopper 1 by the driving of the vibrator 4 installed to prevent the bridge phenomenon And drop to the outlet.

When aggregate aggregated from each hopper 1 is introduced into the mixer 5 through the conveyor 3, the amount of the oil and additives in the emulsion supply device 6 and the additive supply device 7 is decreased by a predetermined amount. It is metered and introduced into the mixer 5 so that the surface of the aggregate is coated on the emulsion, and the aggregate particles adhere to each other by the adhesive component and the additive of the emulsion.

The mixed asphalt thus prepared is loaded onto a truck or the like through an outlet installed in the mixer 5.

In this embodiment, the hopper 1 is arranged so that the mixture of the emulsion and the aggregate is double coated in the mixer 5. That is, a hopper 1 containing coarse aggregate is disposed at the front side so that coarse aggregate having a predetermined particle size is first supplied to the conveyor 3 to be introduced into the mixer 5, and a hopper 1 containing fine aggregate is disposed toward the rear end. do.

By arranging the hoppers 1 as described above, coarse aggregate is first introduced into the mixer 5 and premixed by adding an appropriate amount of emulsion, and when fine aggregate is introduced into the mixer 5, the remaining oil is added and the whole is again added. By mixing, the fine aggregate mastic is formed while improving the coating of the coarse aggregate, thereby obtaining a stable room temperature ascon.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

As described above, according to the present invention, the aggregate aggregate and the fine aggregate corresponding to the waste aggregate is supplied to the conveyor in a batch, so that the input of the aggregate aggregate from the aggregate aggregate to the aggregate in order to efficiently achieve the coating of the entire aggregate mixture with a limited amount of emulsion. Has the effect of producing a stable room temperature ascon.

In addition, when withdrawing the aggregate contained in the hopper, it is possible to easily separate the aggregate attached to the inclined surface of the hopper using the vibration force, so that the supply of aggregate is not interrupted, and other effects that can improve the equipment operation rate and productivity Has

Claims (19)

A plurality of hoppers to which different aggregates and crushed waste aggregates are respectively injected; A conveying means installed at a lower portion of the plurality of hoppers and conveying aggregates drawn therefrom; A mixing means installed at the distal end of the conveying means and mixing and discharging an oil agent composed of a mixture of water, asphalt, and surfactant introduced from the outside into the aggregate dropped and conveyed; Including the oil supply means for supplying a predetermined amount of the oil in the mixing means, The plurality of hoppers are arranged in order from coarse aggregate to fine aggregate, the batch type room temperature regenerated ascon production apparatus that is supplied collectively on the transfer means. The method of claim 1, Aggregate is injected into at least one of the plurality of hopper, the fine aggregate is a batch type room temperature regenerated ascon production apparatus obtained by grinding waste ascon. The method according to claim 1 or 2, It is installed on one side of the mixing means is a batch type room temperature regenerated ascon production apparatus further comprising an additive supply means for supplying an additive for increasing the adhesive force of the aggregate mixed with the oil in the predetermined ratio. The method of claim 1, It is installed corresponding to the lower portion of each of the plurality of hoppers, batch type room temperature regenerative ascon production apparatus further comprising an aggregate amount adjusting means for supplying the conveying means by adjusting the amount of aggregates drawn out therefrom. The method according to claim 1 or 2, The apparatus for manufacturing a batch type normal temperature reclaimed ascon which is installed at a predetermined interval with the fine aggregate input hopper, and further comprising grinding means for pulverizing the waste material introduced therein by particle size. The method of claim 5. The grinding means is Waste ascon lumps are introduced, the hopper has a guide groove is formed on the inclined surface and at least two outlets; A milling shaft installed in the outlet of the hopper in a horizontal direction and provided with a plurality of cutters at predetermined intervals on an outer circumferential surface thereof so that the waste ascon lumps are crushed by particle size; Driving means for rotating the milling shaft; And The grid is installed under the outlet of the hopper, and discharges the waste material pulverized through the milling shaft by a predetermined particle size Batch method room temperature regenerated ascon production apparatus comprising a. The method of claim 6, At least one cylinder installed outside the side surface of the hopper; And One side is connected to the cylinder, the other side enters the inside of the hopper through the guide groove of the hopper, the end is formed in a ring shape and expands and moves the waste ascon lumps into the hopper in accordance with the driving of the cylinder A batch type room temperature regenerated ascon production apparatus further comprising a rammer for pushing the outlet of the pick-up hopper. The method of claim 1, The plurality of hoppers A hopper body having a plurality of outlets formed at a lower portion thereof; An opening door for opening and closing the outlet of the hopper body; The driving cylinder is installed at a predetermined position on the outer inclined surface of the hopper body and one end thereof is fixed to the opening / closing door to open and close the opening / closing door by a telescopic operation. Batch method room temperature regenerated ascon production apparatus comprising a. The method according to claim 1 or 8, The apparatus of claim 1, further comprising separating means for separating the waste material attached to the inclined surface of the hopper mounted at a predetermined position on the outer inclined surface of the at least one hopper. The method of claim 9, The separating means A spring mounted on an outer surface of the hopper to cushion the spring; A motor providing a cushioning force to the spring; A diaphragm positioned on an inner surface of the hopper body and driven up and down by a buffer force of the spring to provide a vibration force to an inclined surface of the hopper; And A batch type room temperature regenerated ascon production apparatus including a rubber plate mounted between the diaphragm and the inclined surface of the hopper body to increase the vibration efficiency. The method of claim 1, The emulsion supply means Emulsion tanks; A supply pump driven to supply an emulsion in the emulsion tank; Heating means for heating an emulsion supplied through the supply pump; An emulsion scale bin for metering the emulsion conveyed through the heating means to be introduced into the mixing means in a uniform amount; A batch type room temperature regenerated ascon production apparatus comprising an emulsion spraying means for injecting the emulsion discharged from the emulsion scale bin into the mixing means at a predetermined pressure. The method of claim 11, Is installed at a predetermined position on the heating means, batch type room temperature regenerative ascon production apparatus further comprises a three-way valve for converting the movement path of the emulsion to the emulsion tank side when the production of room temperature ascon temporarily stopped. The method of claim 1, The additive supply means Between additives; Discharge assistance means is installed on the outlet side of the lower portion between the discharge to smoothly withdraw the additive; A rotary feeder for supplying an additive withdrawn by the discharge assisting means; An additive skibin for measuring an additive supplied through driving of the rotary feeder; The batch type room temperature regenerated ascon production apparatus including a discharge valve for supplying the additive metered in the additive scale bin to the mixing means. Separating the aggregates having different particle sizes into coarse aggregates and fine aggregates, and inputting them into a plurality of hoppers, respectively; Transporting aggregates drawn out from the respective hoppers to a mixer, wherein the aggregates are introduced into the mixer in order of fine aggregates from the coarse aggregates; Adding an emulsion consisting of a mixture of water, asphalt and a surfactant to the mixer at a predetermined ratio to mix the aggregate with the aggregates; And Discharging the mixed ascon from the mixer Batch method room temperature regenerated ascon production method comprising a. The method of claim 14, Injecting aggregate into each of the plurality of hoppers Aggregate discharged from each hopper is a batch-type room temperature regenerated ascon production method comprising the step of supplying the aggregates on the conveyor in the order of fine aggregate obtained by crushing sand or waste ascon from new aggregate having a predetermined particle size. The method according to claim 14 or 15, Injecting aggregate into the plurality of hoppers, respectively A method for manufacturing a batch-type regenerated ascon with a batch method comprising the step of controlling the aggregate amount by measuring the aggregates withdrawn from the plurality of hoppers through a metering hopper. The method of claim 14, Injecting the emulsion at a predetermined ratio and mixing with the aggregate Process for producing a batch type room temperature reclaimed ascon including the step of supplying to the mixer the metering agent and additives introduced into the mixer at a predetermined ratio. The method of claim 14, Injecting the emulsion at a predetermined ratio and mixing with the aggregate A batch method room temperature regenerated ascon production method further comprising the step of mixing by adding a predetermined amount of the adhesive additive to the mixer. The method of claim 14, Injecting the emulsion at a predetermined ratio and mixing with the aggregate After the coarse aggregate is added to the mixer and the pre-mixing by adding an appropriate amount of the emulsion, when the fine aggregate is added into the mixer, a batch type room temperature regenerated ascon production process comprising the step of adding the remaining emulsion and mixing the whole again.