JP2010207758A - Intake implement and cleaning method of building material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intake implement which can clean and grind while suppressing scattering of dust and dirt generated during the grinding when a surface and deposits of a building material are cleaned while being ground, and to provide a cleaning method using the intake implement. <P>SOLUTION: The intake implement is composed of: (1) a cover body that is equipped with a connecting means for connecting to the tip end of the intake part of an intake device and with a frame for fixedly holding a soft bristle brush and a grinding brush and that prevents dust and dirt in the frame from being scattered; (2) a soft bristle brush 13 in which an assembly of a plurality of soft bristle brush materials is arranged annularly in the outer periphery at the tip end frame of the cover body, and in a direction in contact with a target to be cleaned; (3) a grinding brush 14 that is an assembly of a plurality of grinding brush materials and that is arranged in the inside region of the cover body of the annularly arranged soft bristle brush; and (4) an inlet 15 that is connected to the suction tube of the cover body and that is extended to a region surrounded by the cover body, the soft bristle brush inside the cover body, and the target to be cleaned. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a suction tool attached to a suction part of a vacuum cleaner, and the suction tool includes a grinding means for grinding a surface of a building material deteriorated by exposure to sunlight, wind and rain, etc. .
The suction tool of the present invention cleans the surface of asbestos-containing building materials such as asbestos-containing slate, asbestos-containing cement, asbestos-containing paints, soundproofing materials, heat insulating materials, and heat insulating materials, which are used for roofs and walls of existing buildings. It can also be used for grinding.

Conventionally, asbestos (asbestos), which is the cause of lung cancer, asbestosis, malignant mesothelioma, and the like, has been widely used in building materials. Of these building materials, sprayed asbestos is required to take measures such as removal, containment and enclosure when dust is emitted due to deterioration and workers are exposed to the dust. On the other hand, solidified materials such as slate and paint are not subject to these measures because the risk of scattering is small. However, when these asbestos-containing building materials are exposed outdoors to sunlight, wind and rain, etc., their surfaces deteriorate and become fragile, and depending on the treatment method of the base when renovating these asbestos-containing building materials, There was a problem that asbestos might be scattered to the surrounding environment (for example, nonpatent literature 1).
However, in the case where a coating material such as paint is applied to the building material containing asbestos as described above, the base is not sufficiently cleaned or treated, and the deposits attached to the base are not sufficiently removed. When the fragile part remains on the base, the durability of the coating material may not be sufficient. Therefore, when repairing asbestos-containing building materials, the processing of the base is an indispensable process, and a base processing method that does not scatter the asbestos into the surrounding environment has been studied.

As a treatment method that solves the above problems, the applicant of the present application has proposed a method of cleaning the surface of asbestos-containing building materials with a vacuum cleaner in Patent Document 1. Patent Document 1 also proposes a method in which the vacuum cleaner has a brush around the suction port, and the asbestos-containing building material is cleaned while the surface of the asbestos-containing building material is scraped with the brush.

  Patent Document 2 describes a method for reinforcing asbestos-containing slate. The method described in Patent Document 2 forms a layer or film for suppressing dust scattering generated during the removal of deposits on the slate substrate, and then removes deposits on the surface of the slate substrate or / and By performing the cleaning work, the scattering of dust was suppressed.

Ministry of Construction Public-Private Solidarity Joint Development Development of Non-Asbestos Technology for Buildings FY2000 Summary Report “Study on Keren System of Degraded Asbestos Slate Board” Ministry of Construction (pages 4-13) Japanese Patent Application No. 2007-2222063 JP 2009-2125 A (Claims etc.)

In the deposit removal or / and cleaning operation described in Patent Document 2, in the method of previously forming a layer or film for suppressing dust scattering, a step of forming the layer or film is required before the operation. In addition, since the deposits are fixed to the slate substrate by forming the layer or film, it is time-consuming to remove or / and clean the deposits.

In the method of Patent Document 1, there is no step of previously forming a layer or film for suppressing dust scattering as in Patent Document 2, and the operation is easy.
This invention provides the suction tool for vacuum cleaners which can clean the surface of a building material more efficiently by the cleaning method of patent document 1. FIG.

The present invention is used for building roofs, outer walls, etc., and as a surface treatment for building materials whose surfaces have become brittle due to deterioration, when cleaning the surface of the building materials and deposits adhering to the surface of the building materials, It aims at providing the suction tool for suction devices which can be cleaned and ground, suppressing scattering of dust etc. which generate | occur | produced by grinding.
Moreover, the cleaning method of the building material using the said suction tool is provided.

The invention of claim 1 is a brush that is attached to the tip of a suction part of a suction device such as a vacuum cleaner and cleans the surface of the building material that is the object to be cleaned and / or the adhering material adhering to the surface of the building material while grinding. And it is a suction tool characterized by having the component of the following (1)-(4).
(1) A cover body that includes a connecting means for connecting to the tip of the suction portion of the suction device and a frame for fixing and holding the soft brush and the grinding brush, and does not dissipate dust in the frame. (2) A plurality of soft brushes The bristle brush which has arrange | positioned the aggregate | assembly of material in the direction which can be cyclically contacted with a to-be-cleaned object on the outer periphery of the front-end | tip frame of the said cover body.
(3) A grinding brush which is an aggregate of a plurality of grinding brush materials and is disposed in a cover body inner region of the annularly arranged soft brush.
(4) A suction port connected to the suction pipe of the cover body and extended to a region surrounded by the cover body, the soft brush inside the cover body, and the object to be cleaned.

According to a second aspect of the present invention, in the suction tool according to the first aspect, the grinding brush and the suction port are arranged in parallel.

The invention of claim 3 is the suction tool according to claim 1 or 2, wherein the bristle brush material is a fiber having a diameter of 0.01 to 0.5 mm and a Young's modulus of 0.1 GPa to 20 GPa, The grinding brush material is a fiber having a diameter of 0.55 to 1.8 mm and a Young's modulus of 0.5 to 50 GPa, or a fiber having a diameter of 0.1 to 0.8 mm and a Young's modulus of 55 to 250 GPa. It is characterized by that.

Invention of Claim 4 is the suction tool in any one of Claims 1-3, In order to clean the surface of the building material of the shape where substantially the same cross section continues in a fixed direction, the said grinding brush is the said substantially identical. It is a shape in which the tips of the grinding brush materials are aligned in accordance with the shape of the surface portion in the cross section.

The invention of claim 5 is a method of attaching the suction tool according to any one of claims 1 to 4 to the tip of the suction part of the suction device, and cleaning the surface of the building material while sucking with the suction device. It is the building material cleaning method characterized by scraping off the deposit | attachment adhering to the surface of this and / or the surface of building materials with the said grinding brush.

The invention of claim 6 is a method for cleaning the surface of the asbestos-containing building material while attaching the suction tool according to any one of claims 1 to 4 to the tip of the suction part of the suction device and sucking with the suction device. A method for cleaning asbestos-containing building materials, wherein the surface of the asbestos-containing building materials is scraped off to a thickness of 0.001 mm to 2.00 mm.

If the suction tool which is invention of Claim 1 is used, in the case of cleaning while grinding the surface of the building material and the deposits, cleaning and grinding can be performed while suppressing scattering of dust and the like generated by grinding.

  According to invention of Claim 2, the dust etc. which were generated by grinding can be sucked efficiently.

  According to the invention of claim 3, it is possible to efficiently grind the surface of the building material and the deposits, and to particularly suppress scattering of dust and the like generated by grinding.

According to invention of Claim 4, the surface of the building material of the shape where substantially the same cross section continues in a fixed direction can be ground and cleaned without hesitation.

According to the method for cleaning a building material according to claim 5, the building material can be cleaned and ground while suppressing scattering of dust and the like generated by grinding the deposits.

According to the cleaning method for asbestos-containing building materials according to claim 6, the asbestos-containing building materials can be cleaned and ground while suppressing scattering of dust and the like containing asbestos generated by grinding.

Hereinafter, the embodiment which actualized the suction tool of this invention is described based on FIGS.
In addition, in the following description, although it demonstrates centering on the cleaning of asbestos containing building materials, the suction tool of this invention can also be used for building materials which do not contain asbestos.

The suction tool of the present invention is used by being attached to the tip of a suction part of a suction device such as a vacuum cleaner. When using the suction tool, when cleaning the surface of building materials that have become weak due to deterioration of the surface or the deposits adhering to the surface of the building materials, cleaning while suppressing the scattering of dust generated by grinding can do.
In addition, when the building material is an asbestos-containing building material, scattering of dust containing asbestos generated by grinding can be suppressed, and therefore it can be used for cleaning the asbestos-containing building material.

  The asbestos-containing building material refers to a building material in which asbestos is solidified by cement, synthetic resin or the like, regardless of molding or non-molding. For example, slate corrugated plates such as large corrugated plates, medium corrugated plates, small corrugated plates, rib corrugated plates, flexible plates, flat plates, soft plates, soft flexible plates, etc., calcium silicate plates, perlite plates, slag gypsum plates, pulp cement Architectural finishing materials such as boards, ceramics siding, extruded cement boards, decorative slate for residential roofs, asbestos cement cylinders, rock wool sound absorbing ceiling boards containing asbestos, plastic tiles (P tiles), spray tiles, single-layer elastic paints, Examples of the base conditioner include cement filler.

An embodiment of the suction tool is shown in FIG.
In addition, in this specification, let the part applied to the building material which is a to-be-cleaned object in the said suction tool be the "tip" of a suction tool. Moreover, also in the component which comprises a suction tool, let the part nearer the front-end | tip of a suction tool be the "tip" of each component.
In the description of the suction tool 1 shown in FIG. 1, the lower part in FIG. 1A is referred to as “front” of the suction tool 1, and the upper part is described as “rear” of the suction tool 1. To do. Therefore, the portion on the right side when viewed from the front side will be described as “right” of the suction tool 1, and the portion on the left side will be described as “left” of the suction tool 1. In FIG. 1, the left side is right and the right side is left.

The suction tool 10 is an instrument that is used by being connected to a suction unit 50 of a suction device such as a vacuum cleaner, and the cover body 11, the soft brush 13, the grinding brush 14, and the suction port 15 are essential components.
The cover body 11 is a cover that includes a suction tube 12 as a connecting means connected to the tip of the suction part 50 of the suction device, a frame for fixing and holding the soft brush 13 and the grinding brush 14, and does not disperse dust in the frame. is there.
The soft brush 13 is a brush in which an assembly of a plurality of soft brush materials 13 a is arranged on the outer periphery of the front end frame of the cover body 11 in a direction that can contact the object to be cleaned. The soft bristle brush 13 covers the grinding brush 14 and the suction port 15 together with the cover body 11, thereby suppressing the dissipation of dust generated by scraping the surface of the object to be cleaned and the attached matter with the grinding brush 14.
The grinding brush 14 is an assembly of a plurality of grinding brush materials 14a, and is a brush disposed in the inner region of the cover body 11 of the annularly arranged soft brush 13. The grinding brush 14 is a grinding means for scraping the surface of the object to be cleaned and the deposit, and cleans the surface of the object to be cleaned by scraping the surface of the object to be cleaned and the deposit when cleaning.
The suction port 15 is connected to the suction pipe 12 of the cover body 11 at the suction portion 50 of the suction device, and extends to a region surrounded by the cover body 11, the soft brush 13 inside the cover body, and the object to be cleaned. Since the suction port 15 and the grinding brush 14 are in the region, dust generated by grinding by the grinding brush 14 can be sucked from the suction port 15 without being scattered.

  If the suction tool 10 is attached to a vacuum cleaner and used in a cleaning method in which the adhering material adhering to the surface of the building material or the surface of the building material is ground and cleaned, the grinding brush 14 is applied to the surface of the building material and the surface of the building material is applied. When cutting, the grinding brush 14 and the suction port 15 are covered with the cover body 11 and the soft brush 13. Thereby, the dust can be sucked from the suction port 15 without leaking the dust generated by grinding from the region covered with the cover body 11 and the soft brush.

The cover body 11 is a box-shaped stainless steel member formed as a frame for fixing and holding the soft bristle brush 13 and the grinding brush 14 at the tip of the suction pipe 12, and is vacuum-cleaned through the suction pipe 12. It is connected to the suction part 50 of the machine.
The cover body 11 covers the grinding brush 14 and the suction port 15 together with the soft brush 13, and prevents scattering of dust generated when the building material which is the object to be cleaned and the deposit on the building material are ground by the grinding brush 14. Therefore, it is preferable that the cover body 11 does not have a hole, a gap, or the like through which dust is dissipated. In addition, since there is no hole or gap for dust to dissipate, the intrusion of air into the frame is suppressed, so that the negative pressure in the frame can be easily maintained.

The material of the cover body 11 is not particularly limited. For example, metals such as stainless steel, iron, copper, and brass, and synthetic resins such as acrylic resin, polyamide resin, polycarbonate resin, polyethylene resin, polyester resin, polypropylene resin, polystyrene resin, and vinyl chloride resin may be used.

The soft bristle brush 13 is an aggregate of soft bristle brush material 13a, which is a nylon fiber having a diameter of 0.1 mm, and is arranged on the outer periphery of the front end frame of the cover body 11 in a direction that can contact the object to be cleaned. . In the suction tool 10 of FIG. 1, the soft brush 13 is attached by attaching a soft brush body 33 including the soft brush 13 and the soft brush base material 23, which is an aggregate of the soft brush material 13 a, to the periphery of the front end side of the cover body 11. The cover body 11 is annularly arranged around the tip side. By arranging the soft bristle brush 13 in this way, the grinding brush 14 and the suction port 15 can be covered by the cover body 11 and the soft bristle brush 13 when the grinding brush 14 is applied to the object to be cleaned.
Since the soft bristle brush 13 covers the grinding brush 14 and the suction port 15 together with the cover body 11, when the grinding brush 14 is brought into contact with the object to be cleaned, the soft bristle brush 13 arranged in an annular shape becomes the object to be cleaned. It must be placed in a direction that allows contact. In order to sufficiently cover the grinding brush 14 and the suction port 15, it is preferable to arrange the grinding brush 14 and the object to be cleaned so that no gap is generated.

The soft bristle brush material 13a is not limited to a nylon fiber having a diameter of 0.1 mm, and may be any one that can be appropriately bent. When the bristle brush material 13a bends moderately, a gap is less likely to occur between the object to be cleaned and the bristle brush 13. Further, even if the surface of the object to be cleaned has irregularities, the tip of the soft brush material 13a that does not contact the convex portion is cleaned by the deflection of the soft brush material 13a whose tip portion contacts the convex portion of the object to be cleaned. The object can be brought into contact with the concave portion of the object, and a gap is hardly generated between the tip of the soft brush 13 and the object to be cleaned.

In order for the soft brush material 13a to bend moderately, the soft brush material 13a is a fiber having a diameter of 0.01 to 0.5 mm, and the Young's modulus of the fiber is 0.1 GPa to 20 GPa. Is preferred. The diameter is more preferably 0.05 to 0.45 mm, and most preferably 0.1 to 0.4 mm. The Young's modulus is more preferably 0.2 GPa to 15 GPa, and most preferably 0.3 GPa to 10 GPa. When the diameter and the Young's modulus are in this range, the soft brush material 13a bends moderately, so that a gap is hardly generated between the tip of the soft brush 13 and the object to be cleaned. When the diameter and / or Young's modulus is smaller than the above range, the soft brush material 13a is attracted to the suction port, which may cause a gap between the soft brush 13 and the object to be cleaned. On the contrary, when the diameter and Young's modulus are larger than the above range, the bristle brush 13 is deflected, and a strong force is required to press the grinding brush 14 against the surface of the object to be cleaned, and the working speed decreases. There is a fear.

In addition, as what has a Young's modulus in the said range, synthetic resins, such as polyethylene (0.4-1.3GPa), polystyrene (2.7-4.2GPa), nylon (1.2-2.9GPa), are mentioned, for example. Etc. In addition, animal hair such as squirrel hair, deer hair, horse hair, goat hair, goat hair, cow hair, wool, eyelashes, cat hair, eyelashes, pig hair, etc. is also used if it has a Young's modulus in this range. be able to.

The length of the soft brush material 13a is preferably 10 mm to 150 mm, more preferably 20 mm to 100 mm, and most preferably 25 mm to 80 mm. When the length of the soft brush material 13a is too short, the soft brush material 13a is not sufficiently bent, and a gap is easily generated between the object to be cleaned and the soft brush 13. On the other hand, if the length of the soft brush material 13a is too long, when the suction tool is attached to the vacuum cleaner for cleaning, air easily enters from the gap of the soft brush material 13a. The air pressure in the area covered with the brush 13 is less likely to be lowered, and dust is likely to be scattered. If the length of the soft brush material 13a is in the above range, a gap is hardly generated between the soft brush material 13 and the object to be cleaned, and dust can be prevented from being scattered.

Moreover, the brush density of the bristle brush material 14a in the soft bristle brush 14 is preferably 30 to 90%, more preferably 40 to 85%, and most preferably 50 to 80%. Here, the brush density is a region surrounded by an annular line connecting the outer edges of the base of the soft brush material arranged at the outermost periphery at the base of the soft brush, that is, at the contact point between the base of the soft brush and the soft brush. Is the ratio of the total cross-sectional area of the soft brush material to the area of
If the brush density is too small, air easily enters from the gaps between the soft brush materials 13a, so that the air pressure in the region covered with the cover body 11 and the soft brush 13 is difficult to decrease, and dust is likely to be scattered. On the other hand, if the brush density is too high, the soft brush material 13a will not bend moderately, and a gap is likely to occur between the tip of the soft brush 13 and the object to be cleaned.
Moreover, the thickness of the bristle brush 13 having the brush density is preferably 3 to 20 mm, more preferably 5 to 15 mm, and most preferably 7 to 12 mm. If the thickness of the bristle brush 13 is too thin, air easily enters from the gap between the bristle brush members 13a, so that the air pressure in the region covered with the cover body 11 and the bristle brush 13 is difficult to decrease, and dust is likely to be scattered. Become. On the other hand, if the thickness of the soft brush 13 is too thick, the weight of the suction tool 10 increases and the efficiency of the cleaning work may be reduced.

The grinding brush 14 is an aggregate of soft brush materials 14a made of nylon fibers having a diameter of 1 mm, and is disposed in a cover body inner region of the circularly disposed soft brush. That is, the grinding brush 14 is disposed in a region surrounded by the cover body 11, the soft brush 13 and the object to be cleaned when the grinding brush 14 is brought into contact with the object to be cleaned. In the suction tool 10 of FIG. 1, as shown in FIG. 2, grinding is performed by attaching a grinding brush body 34 including a grinding brush 14 that is an aggregate of grinding brush materials 14 a and a grinding brush base material 24 to the cover body 11. A brush 14 is arranged. The grinding brush body 34 used was the one shown in FIG.
Further, when the grinding brush 14 is applied to the object to be cleaned, a gap is likely to be generated between the soft brush 13 and the object to be cleaned unless the soft brush 13 is designed to bend. Therefore, as shown in FIG. 2, the tip position of the grinding brush 14 is preferably located above the tip position of the soft brush 13. At this time, the distance from the tip position of the soft brush 13 to the tip position of the grinding brush 14 (X in FIG. 2) is preferably 2 to 30 mm, more preferably 3 mm to 20 mm, and most preferably 5 mm to 10 mm. . If the distance is too short, the bristle brush 13 may not sufficiently adhere to the object to be cleaned when the grinding brush 14 is applied to the object to be cleaned. On the other hand, if the distance is too long, the bristle brush 13 may bend too much and a gap may occur between the bristle brush members 13a of the bristle brush 13.

Since the grinding brush 14 is a grinding means for cleaning while grinding the surface of the building material and the deposit, what can grind the surface of the building material and the deposit may be used as appropriate.

The grinding brush material 14a is a fibrous material having a diameter of 0.55 to 1.8 mm, and the fiber has a Young's modulus of 0.5 to 50 GPa, or a diameter of 0.1 to 0.00 mm. It is preferably 8 mm fibrous and has a Young's modulus of 55 to 250 GPa. More preferably, the fiber has a diameter of 0.65 to 1.2 mm and the Young's modulus of the fiber is 1 to 30 GPa, or the fiber has a diameter of 0.2 to 0.6 mm. And the Young's modulus of the fiber is 70 to 150 GPa. When the diameter and Young's modulus are within this range, the grinding brush 14 efficiently removes deposits such as moss, mold, plants, soil, sand, and dust that are attached to the surface of the building material to be cleaned. be able to. Moreover, it is possible to efficiently scrape the surface layer of the building material whose surface has become brittle due to deterioration. If the diameter or Young's modulus is smaller than the above range, there is a possibility that the surface of the deposit or building material cannot be sufficiently ground by the grinding brush material 14. On the contrary, when the diameter or Young's modulus becomes larger than the above range, the grinding brush 14 is used. There is a risk that even unhealthy parts of building materials will be scraped off.

In addition, as what has a Young's modulus in the said range, synthesis | combination, such as polyethylene (0.4-1.3GPa), polystyrene (2.7-4.2GPa), nylon (1.2-2.9GPa), etc., for example. Resin, brass (brass) (100-110 GPa), soft iron (211 GPa), cast iron (152 GPa), steel (201-216 GPa) copper (108-130 GPa), metals such as aluminum (70.3 GPa), teak (13 GPa), Examples thereof include glass (71.3 GPa).

The length of the grinding brush material 14a is preferably 5 mm to 100 mm, more preferably 10 mm to 80 mm, and most preferably 20 mm to 70 mm. If the length of the grinding brush material 14 is too short, the grinding brush material 14a is difficult to bend, and if there are minute irregularities on the surface of the object to be cleaned, it becomes difficult to apply the grinding brush 14 to the recess. On the other hand, if the length of the grinding brush material 14a is too long, the grinding brush material 14a bends to disperse the force that presses the grinding brush 14 against the object to be cleaned. There is a risk that it cannot be ground sufficiently. If the length of the grinding brush material 14a is within the above range, the surface of the grinding brush material 14 and the object to be cleaned and the deposits can be efficiently ground and removed.

Moreover, the brush density of the grinding brush material 14a in the grinding brush 14 is preferably 20 to 90%, more preferably 40 to 80%, and most preferably 50 to 70%.
If the brush density is too small, even if the building material is ground with the grinding brush 14, the surface of the building material and the deposits cannot be removed sufficiently. On the other hand, if the brush density is too high, if there are minute irregularities on the surface of the object to be cleaned, the grinding brush 14 is bent and applied to the recesses on the surface of the object to be cleaned. Since a large force is required, the work efficiency of cleaning is deteriorated, and there is a possibility that the grinding brush material 14 and the surface of the object to be cleaned and the deposits cannot be efficiently ground and removed.

Similarly to the grinding brush 14, the suction port 15 is disposed in a region surrounded by the cover body 11, the soft brush 13 and the object to be cleaned when the grinding brush 14 is brought into contact with the object to be cleaned. ing. Accordingly, dust or the like generated by grinding an object to be cleaned or a deposit by the grinding brush 14 can be sucked in the region without leaking from the region.
The suction port 15 is disposed in parallel with the grinding brush 14. If it is such arrangement | positioning, when cleaning work is performed, moving the suction tool 10 to the front direction, the deposit | attachment shaved by the grinding brush 14 and the shavings of a to-be-cleaned material will pass behind the grinding brush 14. By sucking in through the suction port 15, dust and the like can be sucked efficiently.
The suction port 15 is installed so that the suction port constituting member 15a around the suction port 15 does not touch the object to be cleaned when the object to be cleaned or the deposit is ground with the grinding brush 14.

  The vacuum cleaner is a suction device that draws dust with a negative pressure by bringing the inside of the machine close to a vacuum state with a pump. For example, a vacuum cleaner of the type that lowers the atmospheric pressure in the vacuum cleaner by rotating the turbine at high speed with a motor, flows in air at high speed using the difference from the atmospheric pressure, and filters it inside the main body. is there.

The suction power of the vacuum cleaner to which the suction tool 10 is attached is preferably 100 W to 2500 W, more preferably 300 to 2000 W, and most preferably 500 to 1500 W. When the suction power is within this range, the building material can be cleaned without scattering the dust generated when the surface of the building material is ground. When the suction power is less than 100 W, the suction force is not sufficient, and thus dust may be scattered around during cleaning. On the other hand, when the suction power exceeds 2500 W, the suction force is too strong and the suction port is sucked to the building material, which may reduce the working speed.
However, when the length of the pipe from the suction device body such as a vacuum cleaner to the suction portion to which the suction tool 10 is mounted is extremely long (for example, 20 m or more), the suction work rate is larger than the above. A suction device may be used.

The collection efficiency of the filter for filtering the exhaust of the vacuum cleaner is preferably 99.97% to 99.999995% with respect to particles having a particle diameter of 0.3 μm when cleaning the asbestos-containing building material, More preferably, it is 99.9995% to 99.99999995% for particles having a particle size of 0.15 μm. When in this range, it is possible to suppress the asbestos sucked from diffusing outside. When the collection efficiency of the filter for filtering the exhaust of the vacuum cleaner is less than 99.97% with respect to particles having a particle size of 0.3 μm, the collection efficiency is too low and asbestos is scattered around. There is a risk that. Conversely, if the collection efficiency of the filter exceeds 99.999995% for particles with a particle size of 0.3 μm, the collection efficiency is too high and the filter is frequently clogged, resulting in a reduction in work speed. There is a risk.

In cleaning using the suction tool 10, it is preferable to scrape the surface of the building material. By scraping the surface of the building material, deposits such as moss, algae, fungi, plants, soil, sand and dust can be sufficiently removed.

When the surface of the asbestos-containing building material is scraped off by the cleaning, the average scraping depth is preferably 0.001 mm to 2.00 mm, more preferably 0.005 mm to 1.00 mm, most preferably from the surface of the asbestos-containing building material. 0.01 mm to 0.50 mm. When in this range, there is little asbestos scattering from asbestos-containing building materials. When the average scraping depth is less than 0.01 mm, there is a risk that removal of deposits such as moss, fungi, plants, soil, sand, and dust on the surface of the asbestos-containing building material may not be sufficient. On the other hand, when the average scraping depth is 2.00 mm or more, the asbestos-containing building material may be cracked because the thickness of the asbestos-containing building material decreases and the strength decreases. When the average scraping depth is in the range of 0.01 mm to 0.50 mm, a large number of asbestos in the asbestos-containing building material is exposed on the surface by scraping, and the risk of scattering to the surroundings due to wind and rain is reduced.

In the present invention, the average shaving depth refers to the ten-point average roughness defined in JIS B0601-2001. The average length of the altitude from the highest peak to the fifth is extracted from the reference length. And the average of the absolute values of the elevations from the lowest valley bottom to the fifth.

  In addition, the said embodiment of this invention can also be changed and comprised as follows.

In the suction tool 10 of the above-described embodiment, the soft brushes 13 are annularly arranged by attaching four soft brush bodies 33 in the front, rear, left, and right. The number of the soft brush bodies 33 is the annular number of the soft brushes 13. If it is, it will not be specifically limited.
The arrangement method of the soft brush 13 is not limited to the method of attaching the soft brush body 33 including the soft brush base material 23 and the soft brush 13 to the cover body 11, and the soft brush material 13 a is implanted and bonded to the cover body 11. The bristle brush 13 integrated with the cover body 11 may be formed by a method of performing the above.

In the suction tool 10 of the above-described embodiment, one grinding brush body 34 is attached. However, if the grinding brush body 34 is disposed in an area surrounded by the cover body, the soft brush, and the object to be cleaned, the number of the grinding brush bodies 34 is not limited. And the position to arrange is not limited. What is necessary is just to arrange | position the grinding brush 13 according to the state and shape of a to-be-cleaned object.
Further, the grinding brush 14 integrated with the cover body 11 may be formed by the same method as the soft brush 13. However, since the grinding brush 14 is preferably used depending on the type of building material and the deterioration state of the surface of the building material, the grinding brush 14 is attached to and detached from the cover body 11 such as a method of attaching the grinding brush body 34 composed of the grinding brush base material 24 and the grinding brush 14. Preferably it is attached in a possible way.

As shown in FIG. 3A, the grinding brush 14 of the above embodiment has a tip aligned with a straight line. However, the tip is not limited to a straight tip. For example, as shown in FIG. 3B, the shape may match the shape of the object to be cleaned.
In the grinding brush 14 shown in FIG. 3B, the curve connecting the tips of the brushes is substantially the same as the curve of the surface of the slate corrugated plate in a cross section in a plane perpendicular to the longitudinal direction of the slate corrugated plate (medium corrugated plate). The grinding brush material 14a is arranged so that Since the slate corrugated plate has a large difference in height between the concave portion and the convex portion on the surface, if the tip of the grinding brush 14 is aligned straight, the grinding brush 14 does not reach the concave portion. However, if the tip of the grinding brush material 14a is aligned with the slate corrugated plate, the concave portion of the slate corrugated plate can be sufficiently ground and cleaned by the grinding brush 14.
As described above, the shape in which the tip of the grinding brush material 14a is aligned according to the unevenness of the surface of the building material is a slate corrugated plate such as a large corrugated plate, a medium corrugated plate, a small corrugated plate, a rib corrugated plate, or an extruded cement plate. As described above, it is particularly effective when used for a building material having a shape in which substantially the same cross section continues in a certain direction. By using the grinding brush 14 having a shape in which the tip of the grinding brush material 14a is aligned in accordance with the shape of the surface portion in the substantially same cross section, the surface of the building material can be ground and cleaned without any defects.

  In the suction tool 10 of the said embodiment, the cover body 11 was connected to the suction part 50 of the vacuum cleaner through the suction tube 12, but the connection means of the cover body 11 and the suction part 50 of the vacuum cleaner is limited to this. Not. For example, the shape of the cover body 11 that can be connected to the suction portion 50 may be used, and the suction portion 50 and the cover body 11 may be directly connected.

(Example 1) A grinding brush body having the same shape as that shown in Fig. 3 (b) is attached to the suction tool shown in Fig. 1, and the asbestos-containing medium-wave slate plate, which is a roof member of a building about 20 years old, is cleaned. went.
The soft bristle brush was made of a nylon soft bristle brush material having a diameter of 0.1 mm, and the brush density was 75%. Moreover, the thickness of the soft bristle brush was 8 mm.
The grinding brush was made of a nylon grinding brush material having a diameter of 1 mm, and the brush density was 55%.

First, the suction tool was attached to the suction part of the vacuum cleaner. The suction power of the vacuum cleaner used was 800W. In addition, a 99.97% filter with a collection efficiency of 0.3 μm was attached to the vacuum cleaner as a filter for filtering exhaust gas.

Next, the vacuum cleaner was operated, and the surface area of the medium wave slate plate was cleaned with a suction tool while sucking with the vacuum cleaner. In addition, the cleaned part was a section of 10 m in the east and west and 10 m in the north and south of the roof of the building.

Moreover, when it cleaned, asbestos fiber number density | concentration was measured by the method prescribed | regulated to JISK3850-1: 2000. The measurement place was a position 2 m away from the cleaned section on the cleaned roof. The measurement points were four points from the center of the cleaned section to the east, the west, the south, and the north. The suction time in the measurement was 4 hours during the cleaning operation.
As a result of the measurement, the asbestos fiber number concentration at the four points was 0.3 f / liter or less.

(Example 2) The grinding brush body of the suction tool used in Example 1 was replaced with the following, and the asbestos-containing medium wave slate plate, which is a roof member of a building about 20 years old, was cleaned. The used grinding brush body had the same shape as that shown in FIG. 3B, and the grinding brush was made of a brass grinding brush material having a diameter of 0.3 mm. The brush density was 55%.

Next, the vacuum cleaner was operated, and the surface area of the medium wave slate plate was cleaned with a suction tool while sucking with the vacuum cleaner. As in the case of Example 1, the cleaned portion was a section of 10 m in the east and west and 10 m in the north and south of the roof of the building.

Moreover, when it cleaned, the asbestos fiber number density | concentration was measured by the same method as Example 1. FIG.
As a result of the measurement, the asbestos fiber number concentration at each of the four measurement points was 0.3 f / liter or less.

(Comparative example 1) The grinding brush body was removed from the suction tool used in Example 1, and the asbestos-containing medium-wave slate plate, which is a roof member of a building about 20 years old, was cleaned using the grinding brush body. It was. As in the case of Example 1, the cleaned portion was a section of 10 m in the east and west and 10 m in the north and south of the roof of the building.

Moreover, when it cleaned, the asbestos fiber number density | concentration was measured by the same method as Example 1. FIG.
As a result of the measurement, the asbestos fiber number concentration at each of the four measurement points was 10 f / liter or more.

As described above, the surface of the asbestos-containing building material is cleaned and ground while being attached to the suction tool and the suction device of the present invention and cleaned while sucking with the suction device, while suppressing the scattering of dust containing asbestos. I was able to.

(A) schematic diagram of the upper part, (b) schematic diagram of the lower part, (c) schematic diagram of the front, (d) schematic diagram of the right side Schematic diagram of the AA cross section in FIG. (A) Schematic diagram of grinding brush body showing example of grinding brush and grinding brush body used for suction tool of present invention, (b) Grinding brush with front end of grinding brush material aligned with shape of surface portion of building material Schematic diagram of grinding brush body with

15a Inlet member 25 Soft bristle body mounting member 26 Grinding brush body mounting member

Claims (6)

A brush that is attached to the tip of a suction part of a suction device such as a vacuum cleaner and is used for cleaning while grinding the surface of the building material to be cleaned and / or the adhering material adhering to the surface of the building material. A suction tool comprising the components 1) to (4).
(1) A cover body that includes a connecting means for connecting to the tip of the suction portion of the suction device and a frame for fixing and holding the soft brush and the grinding brush, and does not dissipate dust in the frame. (2) A plurality of soft brushes The bristle brush which has arrange | positioned the aggregate | assembly of material in the direction which can be cyclically contacted with a to-be-cleaned object on the outer periphery of the front-end | tip frame of the said cover body.
(3) A grinding brush which is an aggregate of a plurality of grinding brush materials and is disposed in a cover body inner region of the annularly arranged soft brush.
(4) A suction port connected to the suction pipe of the cover body and extended to a region surrounded by the cover body, the soft brush inside the cover body, and the object to be cleaned. The suction tool according to claim 1, wherein the grinding brush and the suction port are arranged in parallel. The soft brush material is a fiber having a diameter of 0.01 to 0.5 mm and a Young's modulus of 0.1 GPa to 20 GPa, and the grinding brush material has a diameter of 0.55 to 1.8 mm and a Young's modulus. The suction tool according to claim 1 or 2, wherein the suction tool is a fiber of 0.5 to 50 GPa, or a fiber having a diameter of 0.1 to 0.8 mm and a Young's modulus of 55 to 250 GPa. A suction tool for cleaning the surface of a building material having a shape in which substantially the same cross section continues in a certain direction, wherein the grinding brush has a shape in which the tip of the grinding brush material is aligned with the shape of the surface portion in the substantially same cross section. The suction tool according to any one of claims 1 to 3, wherein the suction tool is provided. A method for cleaning a surface of a building material while attaching the suction tool according to any one of claims 1 to 4 to a tip of a suction portion of the suction device and suctioning the suction device by the suction device, wherein the surface of the building material and / or the building material A method for cleaning a building material, characterized in that deposits adhering to a surface are scraped off by the grinding brush. A method for cleaning the surface of an asbestos-containing building material while attaching the suction tool according to any one of claims 1 to 4 to the tip of the suction part of the suction device and sucking the suction device with the suction device. A method for cleaning an asbestos-containing building material, wherein the asbestos-containing building material is scraped off to a thickness of 0.001 mm to 2.00 mm.

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