JPH09170337A - Method and device for peeling-off exterior wall coating film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To settle problems such as chemicals of peeling aghast etc. are required to be applied to the surface of a coating film every time for softening it and the peeling work takes much labor and time, besides a prescribed time should be taken after the application. SOLUTION: A device for separating an exterior wall coated film is equipped with a water tank 1 with specific size, a high pressure pump 2 engaged with the water tank 1 and a heater 3 for heating high pressure water discharged from the high pressure pump 2 up to specific temperature. After the high pressure 2 sucks water stored in the water tank 1, it is once pressurized up to specific high pressure water through a pressure adjusting valve 9, and then, it is instantaneously heated up to set temperature. For that purpose, high pressure hot water can be blown against the surface of the exterior wall coated film simply and powerfully by only handle operation of the high pressure hose to increased work efficiency. The coated film against which high pressure hot water is blown is suddenly softened and, at the same time, it can be simply peeled, beside the lowering of adhesive strength with the substrate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a method for peeling off a coating film on the outer wall of a building and an improvement in the apparatus therefor. The present invention resides in a method and apparatus for peeling an outer wall coating film that can be peeled off.

[0002]

2. Description of the Related Art Conventionally, as a method for peeling off an outer wall coating film, for example, one disclosed in Japanese Patent Publication No. 7-21783 is well known as a conventional example. The peeling method in this conventional example, the coating film surface of the organic spray material for outer wall coating,
It is characterized in that a required amount of a release agent containing methylene chloride as a main component is applied, the coating film is softened for a required time, and then pressure water is sprayed to wash and remove the softened coating film.

[0003]

However, in the method of peeling off the outer wall coating film disclosed in Japanese Patent Publication No. 7-21783, the coating film surface is softened each time the coating film is softened. In addition to the fact that a chemical such as a release agent has to be applied to the coating, and that the required time has to be applied after coating, there is a problem that the peeling work of the coating film takes time and effort. It was a thing.

Moreover, since the use of such a chemical solution leads to pollution of groundwater and rivers, and there is a possibility that some problems will be left after the work in today when environmental pollution prevention is taken up. There has been a demand for a highly effective method for peeling off the outer wall coating film.

The present invention has been made in view of such problems and demands of the prior art, and does not require application of a chemical such as a release agent to the surface of the outer wall coating film (in other words, the time and effort of applying it). The outer wall coating can be peeled off more easily and speedily because the curing time is unnecessary.
It is an object of the present invention to provide a method for removing an outer wall coating film which is clean and has a high cleaning / peeling effect, and an apparatus therefor.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems and achieve the intended purpose, the constitution which is the gist of the present invention is to pressurize water to a predetermined pressure to form high-pressure water. There is a method for peeling an outer wall coating film in which the high pressure water is heated to high pressure warm water, and then the high pressure hot water is sprayed on the surface of the outer wall coating film to soften and peel the coating film.

In addition, 110-500 kg of water /
After pressurizing to cm ² to make high pressure water, this high pressure water is 60 ~ 8
There is a method for peeling an outer wall coating film which is heated to 8 ° C. to form high pressure hot water, and then the high pressure hot water is sprayed on the surface of the outer wall coating film to soften and peel the coating film.

Further, according to the present invention, after the water stored in the tank is absorbed by a high-pressure pump, the high-pressure water is discharged through a pressure regulating valve or the like, and the discharged high-pressure water is a heat coil of a heater. There is a method for peeling an outer wall coating film, which comprises a step of generating high pressure hot water by passing through the inside and a step of sending high pressure hot water by a high pressure hose and spraying it on the surface of the outer wall coating film.

On the other hand, the outer wall coating film peeling apparatus according to the present invention for carrying out this method is a high-pressure pump that absorbs water stored in a tank and then discharges high-pressure water through a pressure adjusting valve or the like. And a heater for generating high-pressure hot water while passing the high-pressure water discharged from the high-pressure pump through the heat coil, and a high-pressure hose for blowing the high-pressure hot water generated by the heater onto the surface of the outer wall coating film. It is characterized by that.

Further, the heater sprays fuel such as light oil at a pressure of 6 to 7 kg / cm ² from a fuel nozzle of a high pressure burner and ignites the fuel by an ignition device to burn the water into the heat coil. It is preferable to use at least one or more high-pressure heat coil type burner boilers that absorb the amount of heat generated by the combustion and become high-pressure hot water while flowing.

Further, the temperature of the high-pressure hot water attached to the outlet of the heater or in the vicinity thereof is measured, and when the temperature becomes higher than a set temperature, the heater is ignited and fuel is sprayed. It is better to have a thermosensor that automatically stops and controls combustion.

Further, it is preferable to provide a safety mechanism for automatically stopping the combustion of the heater and reducing the pressure of the high pressure water when the high pressure hot water is stopped.

In the method for peeling an outer wall coating film of the present invention thus constructed, water is pressurized to a predetermined pressure to form high pressure water, and the high pressure water is heated to a predetermined temperature, and then the high pressure water is removed. Since hot water is sprayed onto the surface of the outer wall coating with a jet nozzle, the coating can be momentarily softened during such spraying work, and speedy peeling work of the outer wall coating is possible without using chemicals. Becomes Hereinafter, the method of the present invention will be described in more detail.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION First, the first step of the method for peeling an outer wall coating film of the present invention will be described. Water stored in the tank is absorbed by a high-pressure pump. Then, after pressurizing the water to 110 to 500 kg / cm ² , high pressure water is discharged through a pressure adjusting valve or the like. Various types of high-pressure pumps can be used, for example, pressure 450kg / c
It is preferred to use m ² , 19 or 38 l / min.

Next, the second step will be described. First
The high-pressure water obtained in the step is heated to a predetermined temperature by a heater. As this heater, it is preferable to use a high-pressure heat coil type burner boiler, and as the predetermined temperature, 60 to 88 while high-pressure water passes through the heat coil.
It is heated to ℃ (preferably 80 ℃).

Acrylic resin type, acrylic rubber type, EVA type (Damostar tile) coating materials which are mainly used for the outer wall of the lid are heated to 60 ° C. or higher as shown in FIG. Since it softens rapidly and the adhesion strength with the substrate at this time is reduced to 1/3 to 1/4 as compared with the normal state, and it becomes extremely easy to peel off, the lower limit of the heating temperature is set to 60. In addition, the upper limit value was set to 88 ° C in consideration of the ambient temperature, the melting temperature and the like around the temperature.

Next, the third step will be described. Second
The high pressure hot water obtained in the step is sprayed on the surface of the outer wall coating film with a high pressure hose. A washing gun is attached to the end of this high-pressure hose, and the existing coating film on the outer wall is softened by using the heat quantity of the high-pressure hot water ejected from this high-pressure hose, and the base is formed by using the water pressure. Remove the coating by peeling and washing so as not to damage it.

On the other hand, as shown in FIGS. 1 to 4, the outer wall coating film peeling apparatus used for carrying out the method of the present invention is as follows.
The water tank 1 is mounted in the storage A of the washing car so that it can be easily moved and transported.
The water tank 1 is provided with a high-pressure pump 2 and heaters 3 for heating the high-pressure water discharged from the high-pressure pump 2 to a predetermined temperature.

The water tank 1 comprises a storage tank for 490 liters, and as shown in FIG. 1, tap water is supplied through the cartridge filters 4 and 4 of 10 μm,
High-pressure pump 2 supplies low-pressure water to the upper side through a water absorption valve 5.
Be sent to.

Incidentally, the water tank 1 is provided with a water amount gauge 6 and a level sensor 7 so that the water amount can be constantly detected.

As the high-pressure pump 2, for example, 4
It uses a pressure pump of 50 kg / cm ² , 38 to 40 liters / minute, and is electrically driven by an independent engine 15 (see FIG. 2) mounted in a storage compartment of a washing car described later. It is connected.

Further, this high-pressure pump 2 has a capacity of 500 kg / cm.
^The high-pressure water is sent to the block 10 via the safety valve 8 and the air pressure adjusting valve 9 of No. ² , and is connected to the heater 3 via the valve 11 and the flow switch 12.

The heater 3 is composed of a high-pressure heat coil burner boiler (hereinafter simply referred to as a high-pressure burner) at 80 ° C. and 19 liters / minute, and this high-pressure burner is 6 to 7 kg / from a fuel nozzle (not shown). Light oil sprayed at a pressure of cm ² is ignited by a conventional ignition device for combustion. By forcibly passing water through its heat coil (not shown), the amount of heat generated by this combustion Is absorbed to obtain high-pressure hot water having a set temperature of 80 ° C.

The temperature control of the pressurized hot water is automatically controlled by the thermosensors 13 and 13 attached to the outlets of the heaters 3 and 3, in particular, the sensor 1
When the temperature measured at 3 and 13 becomes higher than the set temperature (80 ° C), the ignition of the heater 3 and the above-mentioned spray of light oil from the fuel nozzle are automatically stopped to stop the combustion. Control to do so.

On the other hand, the high-pressure hose (not shown) for discharging the high-pressure hot water to the outer wall is connected to the hose fittings 14, 14 arranged under the vehicle body of the washing vehicle, and is on the near side. By operating the hand lever of the cleaning gun (for example, double lance gun, wet sand gun, eraser gun, barrier gun, brush gun, etc.) attached to the machine, high pressure hot water is generated from the nozzle protruding outward. It can be vigorously ejected and sprayed on the outer wall coating film.

Further, when the discharge of the high-pressure hot water is stopped, the safety mechanism operates so that the combustion of the heater 3 is automatically stopped and the high-pressure water is depressurized.
In the figure, 15 is an independent engine, 16 is a generator, 17 is a compressor unit, 18 is a radiator water supply port, 19 is a muffler exhaust port, and 20 is an instrument panel.

The peeling device for the outer coating film thus constructed is activated by the independent engine 13 stored in the storage compartment of the washing car, and therefore is excellent in soundproofing.
After the high-pressure pump 2 absorbs the water stored in the water tank 1, it is temporarily pressurized to 450 kg / cm ² of high-pressure water through the pressure regulating valve 9, and then the heater 3 instantly presses it. Since it is heated to the set temperature (80 ° C.), the work efficiency is improved, and high-pressure hot water can be sprayed onto the surface of the outer wall coating film easily and powerfully only by hand operation of the high-pressure hose.

In addition, the coating film sprayed with high-pressure hot water suddenly softens and the adhesion strength with the base is lowered, so that it can be peeled off very easily, and it cannot be removed by the conventional high-pressure water. Even if the scale is dirty, it can be treated in a short time, and even if compared to the conventional cold water washer, the cleaning effect can be significantly improved.

Further, since this device does not use any chemicals or the like, it does not pollute groundwater or rivers and can be used cleanly at any site. In addition, the heaters 3, 3 are heat coil type high pressure. Since it is a burner, it also has advantages such as light weight, small size, and excellent durability.

The present invention is not limited to this embodiment, and can be freely modified in design within the scope of the object of the present invention, and the present invention includes all of them.
For example, the capacity of the water tank 1, the type and pressure of the high-pressure pump 2, the set temperature of the high-pressure hot water, and the like shown in this embodiment differ depending on the material of the outer wall coating film, and are limited to this embodiment. Not a thing.

Further, in the present embodiment, the device of the present invention is installed in the hangar of the high-pressure washing vehicle, but it is not limited to this, and it can be said that the device can be individually installed on the ground and used. There is no end.

[0032]

EFFECTS OF THE INVENTION According to the method of the present invention, the coating film on the surface can be efficiently and speedily peeled off without applying a chemical such as a peeling agent to the outer wall as in the conventional method, and at the same time, high pressure hot water is instantly applied. Since it can be sprayed, it has excellent effects such as more efficient peeling work.

In particular, the outer wall coating film peeling apparatus according to the present invention for carrying out this method absorbs the water stored in the tank and then discharges the high pressure water through a pressure regulating valve or the like. A pump, a heater that generates high-pressure hot water while passing the high-pressure water discharged from the high-pressure pump through the heat coil, and a high-pressure hose that sends the high-pressure hot water generated by the heater and sprays it on the surface of the outer wall coating film. By being equipped, it is heated to the set temperature instantly, so the work efficiency is improved, and high pressure hot water can be sprayed onto the surface of the outer wall coating easily and powerfully just by hand operation of the high pressure hose. In addition to the fact that the coating film sprayed with high-pressure hot water suddenly softens and the adhesion strength with the substrate decreases, it is extremely easy to peel off, and the high Such water can be processed in a short time even dirt scale not fall, even compared with the conventional cold washing machine, an effect such can be increased more remarkable cleaning effect.

Further, the heater sprays fuel such as light oil at a pressure of 6 to 7 kg / cm ² from the fuel nozzle of the high-pressure burner, and ignites and burns with an igniter, so that water is introduced into the heat coil. Lightweight by being composed of at least one high pressure heat coil type burner boiler that absorbs the amount of heat from this combustion while flowing and becomes high pressure hot water.
It has a small size and excellent durability.

Further, the temperature of the high-pressure hot water attached to the outlet of the heater or in the vicinity thereof is measured, and when the temperature becomes higher than a set temperature, ignition of the heater and fuel spraying are automatically performed. Equipped with a thermo-sensor that controls combustion by stopping it automatically, and by extension, a safety mechanism that automatically stops the combustion of the heater and decompresses the high-pressure water when the release of high-pressure hot water is stopped. As a result, there is an effect that the peeling work of the outer wall coating film can be performed more safely by using high-pressure hot water that is appropriate for the material of the outer wall coating film.

As described above, the outer wall coating film peeling method and apparatus of the present invention do not use any chemicals such as a peeling agent.
It is clean and can be used at any site without polluting groundwater or rivers, and it eliminates the need to apply chemicals and the curing time, which is required in the conventional method. It can be peeled off, and because the structure is simple, it is suitable for mass production and can be supplied to users as a low price. .

[Brief description of the drawings]

FIG. 1 is a water piping system diagram of a main part showing a method for removing an outer wall coating film according to the present invention.

FIG. 2 is a plan view showing a state in which the peeling device for an outer wall coating film according to the present invention is installed in a storage compartment of a washing car.

FIG. 3 is a side view showing a state in which the peeling device for the same outer wall coating film is mounted in the storage compartment of the washing car.

FIG. 4 is an end view showing a state in which the peeling device for the outer wall coating film is mounted in the storage compartment of the washing car.

FIG. 5 is a graph showing the relationship between temperature change and strength of an outer wall coating film.

[Explanation of symbols]

 1 Water Tank 2 High Pressure Pump 3 Heater 4 Cartridge Filter 5 Water Absorption Valve 6 Water Gauge 7 Level Sensor 8 Safety Valve 9 Air Pressure Regulator Valve 10 Block 11 Valve 12 Flow Switch 13 Thermo Sensor 14 Hose Bracket 15 Independent Engine 16 Generator 17 Compressor Unit 18 Radiator water supply port 19 Muffler exhaust port 20 Instrument panel

Claims (8)

[Claims] 1. After pressurizing water to a predetermined pressure to make high-pressure water,
A method for peeling an outer wall coating film, which comprises heating the high pressure water to obtain high pressure hot water, and then spraying the high pressure hot water onto the surface of the outer wall coating film to soften and peel the coating film. 2. The high-pressure water is water of 110 to 500 kg / cm.
^The method for peeling an outer wall coating film according to claim 1, wherein the method is performed by applying a pressure of ² . 3. The method for peeling an outer wall coating film according to claim 1, wherein the high-pressure hot water is obtained by heating the high-pressure water to 60 to 88 ° C. 4. A step of sucking water stored in a tank with a high-pressure pump and then discharging the high-pressure water through a pressure adjusting valve or the like, and the discharged high-pressure water passing through the heat coil of the heater. And a step of spraying the high-pressure hot water onto the surface of the outer-wall coating film with a high-pressure hose. 5. After absorbing the water stored in the tank,
A high-pressure pump that discharges high-pressure water through a pressure adjustment valve, etc.
A high-pressure water discharged from the high-pressure pump is passed through a heating coil to generate high-pressure hot water, and a high-pressure hose for blowing the high-pressure hot water generated by the heater onto the surface of the outer wall coating film. Characteristic outer wall coating peeling device. 6. The heater sprays fuel such as light oil at a pressure of 6 to 7 kg / cm ² from a fuel nozzle of a high-pressure burner, and ignites and burns with an igniter to burn water in a heat coil. The peeling device for an outer wall coating film according to claim 5, comprising at least one or more high-pressure heat coil type burner boilers that absorb the heat amount of this combustion while flowing and become high-pressure hot water. 7. A heater attached to or near the outlet of the heater to measure the temperature of high-pressure hot water, and when the temperature becomes higher than a set temperature, ignition of the heater and spraying of fuel are performed. The outer wall coating film peeling device according to claim 5 or 6, further comprising a thermosensor that automatically stops the combustion and stops the combustion. 8. A safety mechanism for automatically stopping the combustion of the heater and reducing the pressure of the high-pressure water when the supply of the high-pressure hot water is stopped. External wall coating stripping device.