JP2695737B2 - How to clean building exterior walls - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a building outer wall surface.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, an operator has applied a liquid cleaning agent to a soiled exterior wall of a building from a gondola which can be moved up and down along the exterior wall of the building. Then, some time later, the outer wall surface of the building is cleaned by washing the outer wall surface to which the cleaning agent has been applied with water.

[0003] In the conventional method of cleaning the outer surface of a building, the wall surface is washed with water by a worker spraying water from the gondola onto the wall surface coated with a cleaning agent.

[0004]

However, in the conventional method for cleaning the outer surface of a building, as shown in FIG. 4, the cleaning liquid contaminated during the washing process bounces off the wall of the building and scatters around the building. However, there has been a problem that an adjacent building, tree, or the like is soiled, or this dirty washing liquid flows into a sewer.

SUMMARY OF THE INVENTION The present invention has been made to overcome the above-mentioned problems of the prior art, and provides a novel method for cleaning the outer wall surface of a building so that the above-mentioned dirty cleaning solution does not scatter around the building. It is intended to provide.

[0006]

According to the present invention, there is provided a method of cleaning a surface of a building outer wall, the method including a step of colliding plastic granules against the surface of the building outer wall.

[0007]

According to the method for cleaning the surface of a building outer wall according to the present invention, when the plastic granules collide with the surface of the building outer wall, an impact force is applied to the dirt adhering to the surface of the building outer wall. At the same time, static electricity is generated in the lightweight foam particles,
The dirt adhering to the surface of the building outer wall is physically removed by the impact force and the static electricity, and the surface of the building outer wall is cleaned.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention, in which a plurality of plastic particles 1 are supplied from a hopper 2 to a firing device 3, and are continuously fired from a firing opening 3 a toward a building outer wall surface 4. It shows a state in which it collides with the building outer wall surface 4 and is captured by a net 5 radially stretched from the firing opening 3a toward the building outer wall surface 4 after the collision.

As shown in FIG. 2, the firing device 3 has two rotating shafts 31, 3 provided separately from each other.
2, belts 33 and 34 are stretched substantially in parallel. When the particle size of each plastic granule 1 is the same, the belt 3
The reference numerals 3 and 34 are disposed at a spacing substantially equal to or slightly smaller than the particle size of the plastic granule 1, and the plastic granules 1 have different particle sizes. In the case of containing particles, the belts 33 and 34 are arranged at a spacing approximately equal to or slightly smaller than the maximum particle size of the plastic granule 1. . One of the rotating shafts on which the respective belts 33 and 34 are stretched 3
1, the belt 35 is rotated by the motor 35, and the belt 34 is reversely rotated by the motor 36. Then, the plastic granular material 1 is sandwiched between the belts 33 and 34 and the belts 33 and 34
To the end of the rotating shaft 34, that is, to the firing opening 3a, from which it is shot outside the firing device along the moving direction.

Further, the net 5 in FIG. 1 has a mesh finer than the particle size of the plastic granules 1 so that the dirty plastic granules 1 after collision can be captured without falling off from the net 5. Has become.

The plastic granule 1 thus captured is transferred to a dust remover 6, as shown in FIG.
The dust attached to the surface of the plastic granular material 1 is removed by the dust remover 6. Next, the plastic granules 1
Is sequentially transferred to a washing machine 7 and a drying machine 8, and the dirt attached to the surface of the plastic granular material 1 is removed by the washing machine 7.
The dried plastic granules 1 are dried in the dryer 8.

The dried plastic granule 1 from which the dirt has been removed in this way is returned to the hopper 2 and is again supplied from the hopper 2 to the firing device 3. As described above, in the method shown in FIG. 1, dust on the dirty plastic granules 1 collected by the net 5 is removed, and then the plastic granules 1 are washed and dried, and then the building outer wall surface 4 is cleaned again. If used, the dirty plastic granules 1 collected by the net 5 are not badly stained, and the dirty plastic granules 1 collected by the net 5 may be used again for cleaning the outer wall surface 4 of the building. .

When the dirt on the building outer wall surface 4 is sticky such as an oil film, the dust of the dirty plastic granules 1 collected by the net 5 is removed by a dust remover 6.
The dirt on the plastic granular material 1 may be removed by the washing machine 7 without removing the dirt.

As described above, in the method for cleaning the outer surface of a building according to the present invention, plastic granules, preferably plastic granules having a porous particle surface, are used, and the plastic granules collide with the outer wall surface of the building. Let me do.

Examples of the plastic particles having a porous particle surface include expanded plastic particles such as expanded polystyrene and expanded urethane. The foamed plastic particles that can be used in the method of the present invention may be a closed-cell foam, an open-cell foam, or a foam having both closed cells and open cells. Is preferably porous.

A plastic particle having a porous particle surface has a larger particle surface area than a plastic particle having a smooth particle surface. Therefore, when a porous plastic granule having an opening on the particle surface collides with the outer wall surface of the building, compared with a case where the plastic granule with a smooth particle surface collides with the outer wall surface of the building, More dirt on the building outer wall surface physically removed by the impact force when the granular material collides with the building outer wall surface can be attached to the plastic granular material surface.

Further, when irregularities are formed on the surface of the plastic granules, the surface area of the plastic granules can be further increased. Further, in order to further adhere the dirt on the outer wall surface of the building to the surface of the plastic granule, the plastic granule may be subjected to a surface treatment with an adhesive, thereby imparting appropriate tackiness to the plastic granule surface. .

Further, the porous plastic granules having openings on the surface of the particles can adsorb and hold the cleaning agent inside the porous body. For this reason, by impregnating the cleaning agent with the cleaning agent and adsorbing and holding the cleaning agent inside the porous material, the plastic particles are caused to collide with the outer wall surface of the building, thereby only physically removing the dirt on the outer wall surface of the building. Instead, it can be chemically removed by the chemical cleaning power of the cleaning agent.

The particle size of the plastic granules that can be used in the method of the present invention is usually 1 to 30 mmφ, preferably 5 to 30 mm.
20 mmφ, and the specific gravity of the granular material is usually 0.1 mm.
When it is 02 or more, the dirt on the building outer wall surface can be uniformly removed within a short time. When the particle size of the plastic granules exceeds 30 mmφ, the distance between adjacent plastic granules that can simultaneously collide with the surface of the building outer wall increases in proportion to the particle size, and the surface of the building outer wall is cleaned evenly at once. This is not preferred because it is difficult to do so and the time required to clean the building exterior wall surface is lengthened. Conversely, if the particle size of the plastic granules is less than 1 mmφ or the specific gravity of the particles is less than 0.02, the impact force generated when the plastic granules collide with the building outer wall surface is weak,
Even if the plastic granular material collides with the surface of the building outer wall, it may not be possible to sufficiently remove the dirt from the surface of the building outer wall.

As is clear from the above description, in the embodiment shown in FIG. 1, the plastic granular material 1 collides with the building outer wall surface 3 and the impact force caused by the collision causes the plastic granule 1 to squeeze the building outer wall surface 3. Dirt is physically removed. In addition, the plastic granular material 1 on which dirt adheres to the surface is captured and collected by the net 4.

The outer wall surface of a building according to the present invention, which has a step of physically removing dirt from the outer wall surface 3 of the building by an impact force generated when the above-mentioned plastic granular material 1 collides with the outer wall surface 3 of the building. Is carried out, for example, as follows.

First, a gondola is set up and down along the outer wall surface of a building to be cleaned. The gondola is provided with the above-described firing device 3 at the upper end of the wall facing the outer wall of the building so that the plastic granules are fired from the firing opening toward the outer wall of the building. A hopper is installed inside the gondola located above the firing device 3. Further, a net is extended from the firing opening of the firing device 3 toward the outer wall of the building, and the plastic granules fired from the firing opening of the firing device 3 are captured by the net. On the other hand, a dust remover, a washer and a dryer are installed inside the gondola, a pipe of plastic granules is formed from the lower end of the net to the dust remover, and the plastic granules are removed from the dust remover. , A carrier for transporting plastic granules to a washer, a dryer, and a hopper sequentially.

A building in which a worker rides on a gondola equipped with the above-mentioned plastic granules, a hopper, a firing device, a net, a dust remover, a washer, a dryer and a plastic granule carrier, and is to be cleaned. When plastic granules are fired on the outer wall, the net is stretched over the firing of the firing device so that all the plastic granules can be collected by the net, while adjusting the separation distance between the net and the building outer wall to be cleaned, Normally, while raising the gondola along the outer wall surface of the building to be cleaned and lowering the gondola from the top of the building, the worker operates the hopper, firing device, net, dust remover, washing machine, and dryer as described above. By operating the plastic granular material carrier, the surface of the building outer wall is cleaned.

In the embodiment shown in FIG. 1, a net 5 is radially stretched from a firing opening 3a of a firing device 3 toward a building outer wall surface 4, and the plastic granules after the collision with the building outer wall surface 4 become dirty. Although the body 1 can be collected by the net 5, the method for cleaning the outer surface of a building according to the present invention employs such a net 5, a dust remover 6, a detergent tank 7,
The dryer 8 and the plastic granule carrier are not necessarily required. For example, when the plastic granular material 1 is dry, unlike the conventional method for cleaning the outer surface of a building, a cleaning agent is not used. The dirty cleaning solution does not bounce off the walls of the building and scatter around the building.

[0025]

According to the method for cleaning a building outer wall surface according to the present invention, a cleaning agent is applied to the conventional building outer wall surface, and then the wall surface coated with the cleaning agent is washed with water. Unlike the method of cleaning the surface of the building, the surface of the building outer wall is cleaned by colliding the plastic granules with the surface of the building outer wall. It does not fly around buildings.

Further, in the present invention, the surface of the building outer wall is cleaned by colliding the plastic granules with the surface of the building outer wall. Therefore, when the surface of the building outer wall is cleaned by colliding sand or the like with the surface of the building outer wall. Unlike this, even if the building outer wall is made of glass or the like, it does not damage the surface of the building outer wall. Therefore, according to the method for cleaning a building outer wall surface according to the present invention, it is possible to clean the building outer wall surface without damaging it, and the cleaning of the building outer wall surface does not impair the appearance of the building.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a method for cleaning a building outer wall surface according to the present invention.

FIG. 2 is a schematic drawing of a firing device used in the embodiment of FIG.

FIG. 3 is a drawing showing an example of a work scene for cleaning a building outer wall surface.

FIG. 4 is a drawing for explaining a problem of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plastic granular material 2 Hopper 3 Shooting device 3a Shooting hole 4 Building outer wall surface 5 Net 6 Dust remover 7 Washer 8 Dryer 31, 32 Rotating shaft 33, 34 Belt 35, 36 Motor

Claims (1)

(57) [Claims] 1. A method for cleaning a surface of a building outer wall, comprising a step of colliding plastic granules against the surface of the building outer wall.