KR200425256Y1 - Apparatus for mixing on the spot of a composite asphalt concrete - Google Patents

Abstract

The present invention relates to an asphalt concrete composition field mixing apparatus for mixing and heating aggregate and asphalt binder to be filled in expansion joints or road breaks, etc. After heating the binder and aggregate using respective indirect heating devices, The present invention relates to an asphalt concrete composition field mixing apparatus capable of shortening a heating time by mixing and preventing a deterioration of physical properties.

Asphalt concrete composition field mixing device of the present invention for mixing the composition consisting of aggregate and a binder for this purpose, having a melting space for accommodating the binder to melt the binder at a predetermined temperature, and one side of the melting machine It is configured to include a mixer which is provided in the mixer and aggregate supplied from the melter by heating to a predetermined temperature, and a control device for controlling the melter and the mixer.

Mixer, melter, frame, binder, heating, hot air device

Description

Asphalt concrete composition field mixing device {APPARATUS FOR MIXING ON THE SPOT OF A COMPOSITE ASPHALT CONCRETE}

1 is a block diagram showing an asphalt concrete composition on-site mixing device according to an embodiment of the present invention.

FIG. 2 is a partial cutaway perspective view showing the configuration of the melter of FIG. 1 in detail; FIG.

3 is a partial cutaway perspective view showing in detail the configuration of the mixer of FIG.

4 is an enlarged perspective view of the rotating body of FIG. 3.

5 is a block diagram of an asphalt concrete composition on-site mixing device according to another embodiment of the present invention.

6 is a partial cutaway sectional view of the hot air device of FIG. 5.

7 is a partially cutaway perspective view of a heated mixer according to the prior art.

<Description of the symbols for the main parts of the drawings>

1: melting machine

    11: main body, 111: melting space, 112: binder inlet, 113: binder outlet

    12: heating part, 121: space part

    13: rotating body, 131: rotating shaft, 132: rotating blade

    14: air inlet pipe, 141: solenoid valve

    15: pressure gauge

2: mixer

    21 main body, 211 mixing space, 212 aggregate input portion, 213 binder input portion, 214 mixture discharge portion

    22: heating part, 221: space part

    23: rotating body, 231: rotating shaft, 232: rotating blade

    24: temperature sensor

3: control device

4: supply pipe

5: hot air device

    51: hot air fan, 511: heating air discharge port

    52: compressed air supply pipe, 53: fuel supply pipe

    54: separation block

The present invention relates to an asphalt concrete composition mixing device, and more particularly, to a concrete composition mixing device for mixing and heating aggregates and asphalt-based binders to be filled in stretch joints or road breaks, etc. The present invention relates to an asphalt concrete composition field mixing apparatus capable of shortening a heating time and preventing a decrease in physical properties by heating and mixing each indirect heating apparatus.

In general, bridges and structures may be cracked or damaged due to stress due to expansion and contraction due to temperature changes, creep and dry shrinkage of concrete, floating settlement of ground, and earthquakes.

Therefore, in the case of the bridge, the top plate is shrunk or expanded according to the temperature change, so that the top plate of the bridge is installed at a predetermined distance from the neighboring top plate in consideration of the shrinkage and expansion of the top plate.

Between the tops of these bridges, the tops of the bridges can be interconnected and flexibly cope with the contraction and expansion of the tops, which can promote the safe operation of the vehicle. It is usually filled with a stretch joint member in which a binder and aggregate are mixed.

In order to construct the expansion joint using these binders and aggregates, or to repair damaged roads, prepare a concrete mixer that melts asphalt-based binders and aggregates, and then put these binders and aggregates in concrete mixers. Good mixing and filling in expansion joints or damaged roads has been applied.

In particular, for repairing small road damaged parts or repairing pipelines such as traffic lights, construction is carried out after transporting asphalt concrete, which is premixed and manufactured at the Ascon factory, by using a vehicle. If there is a problem that the temperature of the asphalt concrete is lowered and the road surface and adhesion performance is lowered.

In general, when the temperature of the asphalt concrete is lowered by 10 ℃ adhesion capacity is reduced by about 20%, due to which the small asphalt repair site is faster than the other parts, the degree of breakage is faster.

Therefore, heating the asphalt binder and aggregate to a constant temperature is an important factor in the construction of new bridges and small road repairs.

Thus, in the related art, an apparatus for heating and mixing an asphalt binder and aggregate at a constant temperature has been disclosed under the title of "Heating Mixer" in Korean Patent Publication No. 2003-72555.

7 is a partial cutaway perspective view of a heating mixer according to the prior art, and relates to a heating mixer for mixing a concrete composition at a predetermined temperature, and includes an accommodating part 200 accommodating the concrete composition and a accommodating part 200. And a case 100 having a separate accommodation space, and a heating member 500 for heating the fruit oil 400 and the fruit oil 400 accommodated in the accommodation space 300.

The accommodation space 300 is a space consisting of an outer wall and an inner wall of the case 100, and the heating member 500 is a heater installed in a space between the outer wall and the inner wall.

The heated mixer according to such a configuration heats the fruit oil around the storage portion in which the mixing operation is performed, thereby heating the inside of the storage portion by indirect heat.

However, there is a problem in that the heating method by the indirect heat takes a long time to heat the aggregate, there is a problem that the construction waiting time is long.

In order to solve this problem, LPG torch is directly heated, but in this case, the strength of aggregate is lowered by flame, and asphalt binder is inherent such as elongation (ductility) and low temperature adhesiveness by heat when heated above a certain temperature. This sharply reduced, there was a problem that the expansion joint loses its original function.

An object of the present invention for solving the problems according to the prior art, by mixing the concrete composition with a binder melter and aggregate mixer separately, by heating the melter and the mixer indirect heat and a non-contact temperature sensor therein, It is to provide an asphalt concrete composition field mixing device that can be heated and mixed in a short time and the aggregate and the binder to maintain a constant temperature of the mixture.

In addition, the present invention is further provided with a hot air device of the air heating method of the inside of the aggregate mixer to heat the inside of the mixer by using it to solve the problem that the physical properties of the aggregate or binder is degraded when heated by the existing direct flame To provide an asphalt concrete composition on-site mixing device.

Asphalt concrete composition field mixing device of the present invention for solving the above technical problem is a device for mixing a composition consisting of aggregate and a binder, having a melting space for accommodating the binder and melting the binder at a predetermined temperature, It is provided on one side of the melter and comprises a mixer for heating and mixing the binder and aggregate supplied from the melter to a predetermined temperature, and a control device for controlling the melter and the mixer.

The melting unit is formed of a melting space in which melting is formed, a binder is formed in an inlet, and a melted binder includes a main body in which an outlet is formed, and a heating part in which fruit oil is accommodated; It consists of a rotating body provided in space.

The melter further includes an air inlet tube and a solenoid valve configured to automatically open and close the air inlet valve of the air inlet tube to allow the binder to be discharged by air pressure, and to open and close the solenoid valve. Can be made automatically by the control device.

The mixer has a mixing space where mixing is formed, an aggregate input unit and a binder input unit supplied from the melter are formed, and the mixture is composed of a main body having a discharge unit, and a space unit consisting of an outer wall and an inner wall around the mixing space to accommodate fruit oil. And a heating unit, a rotating body provided to promote heating and mixing of the aggregate and the binder contained in the mixing space, and a temperature sensor provided inside the main body to sense the temperature of the aggregate inside the mixer.

The rotating body is composed of a rotating shaft and a rotary blade fitted in the upper portion of the rotary shaft to prevent the rotary shaft from lifting upward when the vibration due to the rotation or the aggregate mixture is caught in the rotary blade caused an excessive load. It consists of a spline structure.

Here, one side of the mixer may be further provided with a hot air device for supplying heated air to the mixer.

The hot air device may be configured to inject compressed air into the hot air fan and heat the injected compressed air using LPG, and then inject the heated air into the mixer.

The present invention will become more apparent through the following preferred embodiments with reference to the accompanying drawings. Hereinafter will be described in detail to enable those skilled in the art to easily understand and reproduce through the embodiments of the present invention.

1 is a block diagram showing an asphalt concrete composition on-site mixing apparatus according to an embodiment of the present invention, the present invention is a device for mixing the expansion joint member composition consisting of aggregate and a binder, comprising a melting space for accommodating the binder A melter 1 for melting the binder at a predetermined temperature, and a mixer 2 provided at one side of the melter 1 for heating and mixing the binder and aggregate supplied from the melter 1 to a predetermined temperature. And a control device 3 for controlling the melter 1 and the mixer 2.

Here, the melter 1 and the mixer 2 are connected through a supply pipe 4 so that the binder from the melter 1 can be introduced into the mixer 2.

FIG. 2 is a partial cutaway perspective view showing the melting apparatus configuration of FIG. 1 in detail, wherein the melting apparatus 1 includes a main body 11, a heating unit 12, and a rotating body 13.

The main body 11 has a melting space 111 in which binder melting is formed, and an inlet 112 for injecting a binder into the melting space 111 is formed, and a discharge part 113 for discharging the melted binder. ) Is formed.

The heating part 12 is formed around the melting space 111 to heat the inside of the melting space 111, and is made up of a space part 121 formed of an outer wall and an inner wall, and the space part 121 is a fruit. The euro is filled.

In addition, the melter 1 can automatically open and close the air inlet pipe 14 and the air inlet valve of the air inlet pipe 14 to the upper end of the main body 11 in order to discharge the binder by the air pressure. A solenoid valve 141 is further provided.

The melter 1 is further equipped with a pressure gauge 15 for measuring the air pressure of the melting space 111 to maintain a constant pressure inside the melter to maintain a constant amount of binder supplied to the mixer. Can be.

In other words, the upper limit value and the lower limit value of the air pressure inside the melter are set to the control device 3, respectively, and the opening and closing of the solenoid valve 141 is controlled by the control device 3 according to the pressure sensed by the pressure gauge 15. By controlling, the amount supplied to the mixer can be kept constant.

That is, the air pressure control can be achieved by automatically opening and closing the solenoid valve 141 by the value set in the control device 3 according to the operator's operation signal.

FIG. 3 is a partial cutaway perspective view showing the configuration of the mixer of FIG. 1 in detail, wherein the mixer 2 includes a main body 21, a heating unit 22, a rotating body 23, and a temperature sensor 24. .

In the main body 21, a mixing space 211 in which aggregate and a binder are mixed, an aggregate input part 212, and a binder input part 213 from the melting machine are formed, and the mixture mixed in the mixing space 211 is provided. The discharge part 214 is formed.

The heating part 22 is formed around the mixing space 211 to heat the aggregate and the binder contained in the mixing space 211, and consists of a space part 221 consisting of an outer wall and an inner wall to produce a fruit oil. Accept.

On the other hand, the rotating body 23 is provided to promote the heating and mixing of the aggregate and the binder accommodated in the mixing space 211, as shown in Figure 4 the rotating shaft 231 and the rotating shaft 231 Rotating blades 232 fitted to the upper portion of the spline structure is coupled.

That is, since the rotary blade 232 is fitted to the rotary shaft 231 in a spline structure, when the aggregate is introduced into the mixer, the obstacle is eliminated so as not to disturb the operation, and a strong force is transmitted and the aggregate is rotated when the rotary blade is rotated. When the vibration caused by the rotation or the aggregate mixture is caught in the rotary blades 232 and excessive load occurs, the rotary blades can be lifted upward to prevent damage to the rotary shaft.

Accordingly, the mixture rotary blade can be easily disassembled, thereby facilitating cleaning.

In addition, the mixer 2 is further provided with a temperature sensor 24 provided inside the main body 21 to sense the aggregate temperature inside the mixer, the temperature sensor 24 is a mixer (using a non-contact laser thermometer) 2) By measuring the internal temperature in real time and keeping the temperature of the mixture constant, the characteristics of the expansion joint can be kept uniform.

That is, when the temperature of the mixture is not constant, the phenomenon of lifting may occur due to the unevenness of the expansion joint, but the flatness of the expansion joint can be maintained uniformly as the temperature of the mixture can be kept constant.

And, in one embodiment of the present invention, although not shown in the drawings provided with a temperature sensor for sensing the temperature of the heating portion of the dissolving and mixer, and when the measured temperature measured by the temperature sensor reaches the set temperature heating of the heating portion It is preferably configured to stop to prevent excessive temperature rise of the fruit oil.

5 is an asphalt concrete composition on-site mixing device according to another embodiment of the present invention, the detailed description of the same configuration as the embodiment of the present invention will be omitted.

Referring to the drawings, in the apparatus for mixing a stretch joint member composition consisting of aggregate and a binder according to another embodiment of the present invention, a melter having a melting space 111 for accommodating the binder to melt the binder at a predetermined temperature (1), a mixer (2) which is provided on one side of the melter (1) and is heated to mix the binder and aggregate supplied from the melter (1) to a constant temperature, and is provided on one side of the mixer (2) And a hot air device 5 for supplying heated air into the mixer 2, and a control device 3 for controlling the melter 1, the mixer 2, and the hot air device 5. It is composed.

 The hot air device (5) is configured to inject compressed air into the hot air fan and heat the injected compressed air using an LPG torch, and then inject heated air into the mixer (2).

To this end, the hot air device 5 includes a hot air fan 51, a fuel supply pipe 52, a compressed air flow pipe 53 and a compressed air separation block 54, as shown in FIG. At the outlet of the hot air fan 51, a heated air discharge port 511 through which heated compressed air is discharged is formed.

Accordingly, the compressed air supplied to the compressed air flow pipe 53 is separated into two branches in the compressed air separation block 54 and injected into the hot air fan 51, and the compressed air injected into the hot air fan 51 is It is heated by the flame generated from the LPG supplied to the fuel supply pipe 52 and then supplied to the mixing space 211 of the mixer 2 through the heating air discharge port 511.

As described above, according to another embodiment of the present invention, as the heated air is blown using a hot air device without directly generating flames in the aggregate and the binder mixer, the construction time may be shortened by heating the inside of the mixer in a short time. In addition, it is possible to prevent the degradation of the physical properties of the aggregate and the binder.

In various embodiments of the present invention, the control device 3 is a switch (not shown) to allow the operator to manually operate the drive signal of the rotor blade 232 of the mixer and the rotor blade 13 of the melter It may be further provided.

Referring to FIGS. 1 to 6, a method for constructing a stretch joint using a temperature controlled mixer used for stretch joint according to various embodiments of the present invention is as follows.

First, a binder is put into the melting machine 1, and then the heating unit 12 of the melting machine main body 11 is heated to rotate the rotor 13 to heat the binder.

At the same time, after the aggregate is introduced into the mixer 2, the heating unit 22 is heated, and the aggregate is heated while rotating the rotary blade 232 through the rotation of the rotating shaft 231.

At this time, in order to shorten the temperature heating time inside the mixer 2, compressed air is blown into the mixing space 211 using the hot air device 5 to heat the aggregate in a short time.

Here, by heating the aggregate by injecting air heated by the hot air device (5) without directly using a flame when the aggregate is heated, the strength of the aggregate can be prevented from being weakened.

 At this time, by heating the aggregate to a set temperature while measuring the temperature of the aggregate by using a temperature sensor 24 in a non-contact manner, when the aggregate temperature reaches about the set temperature, for example about 200 ℃ stops the operation of the hot air device and heating above The prepared binder is supplied to the mixer 2.

The heated binder is supplied by the air pressure injected through the air inlet pipe (1) provided on one side of the melter (1), the control device (3) outputs a drive signal to the solenoid valve so that the solenoid valve is air injection The on / off valve of the pipe 14 is controlled.

Thus, according to the embodiment of the present invention, the amount of binder supplied from the melter 1 to the mixer 2 by the air pressure control is adjusted.

In other words, the upper and lower limit values of the air pressure are set, and the pressure gauge 15 is attached to check the pressure inside the melter 1 in real time, and the solenoid valve 141 is maintained to maintain a constant pressure inside the melter 1. ), The amount of binder injected into the mixer 2 can be made constant.

Meanwhile, the binder heated by the mixer 2 is supplied, the binder and the aggregate are mixed, the mixture is filled in the expansion joint of the bridge, and the compaction process is performed to perform the expansion joint.

As described above, the present invention includes a binder melter and an aggregate mixer separately and indirectly heats the melter and the mixer by using fruit oil, and has a non-contact temperature sensor therein so that the aggregate and the binder are heated and mixed in a short time. It is possible to prevent the deterioration of the physical properties of the mixture by maintaining the temperature of the mixture constant, there is an advantage that the construction surface can improve the uniformity and properties.

In addition, the present invention is further provided with a hot air device of the air heating method in the interior of the aggregate mixer by heating the inside of the mixer by using it to prevent the problem of degradation of the properties of the aggregate or binder when heated by the existing direct flame, the mixture There is an advantage that can be prevented from falling the strength of the surface constructed using.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many different and obvious modifications are possible without departing from the scope of the present invention from this description. Therefore, the scope of the present invention should be interpreted by the utility model registration claims described to include many such variations.

Claims (5)

In the apparatus for mixing the expansion joint member composition consisting of aggregate and a binder, A melting apparatus 1 having a melting space for accommodating the binder and melting the binder at a predetermined temperature; A mixer (2) provided at one side of the melter (1) for heating and mixing the binder and aggregate supplied from the melter (1) to a predetermined temperature, and Asphalt concrete composition field mixing device, characterized in that it comprises a control device (3) for controlling the melter (1) and the mixer (2). The method of claim 1, The fusing unit (1) is; A main body 11 in which a melting space 111 in which melting is performed is formed, a binder is formed in the inlet 112, and a discharge part 113 is formed in the melted binder; A heating part 12 consisting of a space part formed of an outer wall and an inner wall around the melting space 111 to accommodate fruit oil; A rotating body 13 provided in the melting space 111; An air injection pipe 14 provided at an upper end of the main body 11 to allow binder discharge to be performed by air pressure; Further provided with a solenoid valve 141 that can automatically open and close the air injection valve of the air injection pipe 14, Asphalt concrete composition field mixing device, characterized in that the opening and closing of the solenoid valve 141 is automatically made by the control device (3). The method of claim 1, The mixer (2); A main body 21 having a mixing space 211 in which mixing is performed, an aggregate input part 212 and a binder input part 213 supplied from the melter, and a mixture discharge part 214 formed therein; A heating part 22 formed of a space part formed of an outer wall and an inner wall around the mixing space 211 and receiving fruit oil; Rotating body 23 is provided to promote the heating and mixing of the aggregate and the binder contained in the mixing space 211, and Is provided inside the main body 21 is configured to include a temperature sensor 24 for sensing the aggregate temperature inside the mixer, The rotating body 23 is A rotating shaft 231, Rotating blade 232 is inserted into the upper portion of the rotating shaft 231, when the vibration caused by the rotation or the aggregate mixture is inserted into the rotary blade 232, excessive load occurs that the rotary blade is lifted upwards to damage the rotary shaft Asphalt concrete composition field mixing device, characterized in that made of a preventable spline structure. The method according to any one of claims 1 to 3, Asphalt concrete composition field mixing device, characterized in that the one side of the mixer (2) is further provided with a hot air device (5) for supplying heated air to the mixer (2). The method of claim 4, wherein The hot air device (5) is; Asphalt concrete composition field mixing device, characterized in that it is configured to inject compressed air into the hot air and to inject the heated air into the mixer (2) after heating the injected compressed air using an LPG torch.

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