JP2020143527A - Asbestos removal device, asbestos removal system and asbestos removal method - Google Patents

Abstract

To provide an asbestos removal device, an asbestos removal system and an asbestos removal method which enable quantity of use of liquid to be suppressed and asbestos adhered to a building to be removed.SOLUTION: An asbestos removal device 1 comprises a casing 11 that forms a closed space S by covering the asbestos layer A adhered to a building (wall surface W), and one or more nozzles 12 that jet liquid (water) for peeling the asbestos layer A into the closed space S as a mist. The casing 11 comprises a supply connection port 116 for connection to a liquid supply hose 16 for supplying the liquid to the nozzle 12, and a discharge connection port 119 for connection to a pollutant discharge hose 19 for discharging, from the closed space S, pollutants in which asbestos and mist separated from the wall surface W and crushed in the closed space S are united.SELECTED DRAWING: Figure 1

Description

The present invention relates to an asbestos removing device, an asbestos removing system, and an asbestos removing method for removing asbestos adhering to a building.

Asbestos, which has good properties such as fire resistance, heat insulation, and soundproofing, was attached to the walls, roofs, and beams of various buildings. Asbestos is removed in advance when the building is demolished. Asbestos is so lightweight that it easily scatters. Asbestos causes diseases such as lung cancer, pulmonary fibrosis, and mesothelioma. Therefore, various asbestos removing devices are provided in which asbestos is prevented from scattering and asbestos can be removed from a wall surface or the like.

For example, Patent Document 1 describes an asbestos removing device that efficiently recovers asbestos by a water jet. This asbestos removing device includes a suction means and a nozzle. The suction means includes a housing and a suction hose.

The housing has a box shape with an internal space. The frame-shaped bottom of the housing is addressed to structures such as the walls of buildings that form an asbestos layer. An asbestos introduction port is provided at the lower end on the front side adjacent to the bottom of the housing. The suction hose is connected to the rear surface adjacent to the bottom of the housing, and keeps the inside space at a negative pressure while exhausting the inside space inside the housing. The nozzle injects a water jet toward the asbestos inlet of the housing.

The water jet ejected from the nozzle crushes the asbestos layer by water pressure, and at the same time, pushes the crushed asbestos into the internal space from the asbestos introduction port. The crushed asbestos and the water used for crushing the asbestos are sucked into the internal space and discharged to the outside of the internal space by the suction hose.

Japanese Unexamined Patent Publication No. 2008-297884

The asbestos removing device described in Patent Document 1 grinds the asbestos layer by a water jet. This asbestos remover uses a large amount of water, contains excess water, and produces a large amount of wastewater. Asbestos contained in the wastewater is filtered and removed by a filtration device. If the amount of wastewater is enormous, the filtration device becomes large and a large work space is required. Especially in the city center, it may not be possible to install a large-scale filtration device or secure a large work space. In addition, in order to remove asbestos, a treatment material obtained by diluting a chemical with water may be used, but in the present application, it is mainly referred to as a liquid including water and a treatment agent.

An object of the present invention is to provide an asbestos removing device, an asbestos removing system, and an asbestos removing method capable of removing asbestos adhering to a building by suppressing the liquid used.

The asbestos removing device according to the present invention has a casing that forms a closed space by covering asbestos adhering to a building, and one or more jets of a liquid for peeling the asbestos layer into the closed space as a mist. The casing includes a nozzle, a supply connection port for connecting a liquid supply hose for supplying the liquid to the nozzle, and asbestos separated from the building and crushed in the closed space. It is provided with a discharge connection port for connecting a pollutant discharge hose for discharging the contaminants adhering to the mist from the closed space.

One aspect of the asbestos removing device according to the present invention includes a liquid supply hose connected to the supply connection port and a pollutant discharge hose connected to the discharge connection port.

Another aspect of the asbestos removing device according to the present invention includes a nozzle head that rotates the nozzle in the casing.
In this case, a plurality of the nozzles are arranged in each direction from the center of the rotating nozzle head, and the distances from the center to each nozzle are different.

Another aspect of the asbestos removing device according to the present invention is an air hose connection port for connecting an air hose for supplying high pressure air for making the liquid into a mist to the nozzle, and for reducing the pressure of the high pressure air. It has an exhaust port.

As yet another aspect of the asbestos removing device according to the present invention, the pressure of the mist injected from the nozzle is 100 to 300 MPa.

The asbestos removal system according to the present invention stores any of the asbestos removal devices according to the present invention and the contaminants discharged from the discharge connection port, and impurities in the contaminants settle in the lower layer and float in the upper layer. It is equipped with a water storage tank in which circulating water containing no impurities is separated into an intermediate layer.
The circulating water stored in the water storage tank is used as a liquid for exfoliating the asbestos by the liquid supply hose.

The asbestos removing method according to the present invention includes a step of covering the asbestos layer adhering to the building with a casing to form a closed space, and a step of injecting mist for peeling the asbestos layer from the building into the closed space. And the step of discharging the contaminants adhering to the mist from the asbestos separated from the building and crushed in the closed space from the closed space.

According to the present invention, it is possible to provide an asbestos removing device, an asbestos removing system and an asbestos removing method capable of removing asbestos adhering to a building by suppressing the liquid used.

It is a perspective view which shows one Embodiment of the asbestos removing apparatus of this invention. It is a side view which shows one Embodiment of the asbestos removing apparatus of this invention. It is a front view which shows one Embodiment of the asbestos removing apparatus of this invention. It is a back view which shows one Embodiment of the asbestos removing apparatus of this invention. It is the schematic which shows one Embodiment of the asbestos removal system of this invention.

An embodiment of the asbestos removing device, the asbestos removing system, and the asbestos removing method of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view showing an embodiment of the asbestos removing device of the present invention. FIG. 2 is a side view showing an embodiment of the asbestos removing device of the present invention. FIG. 3 is a front view showing an embodiment of the asbestos removing device of the present invention. FIG. 4 is a rear view showing an embodiment of the asbestos removing device of the present invention. FIG. 5 is a schematic view showing an embodiment of the asbestos removal system of the present invention.

First, an outline of the asbestos removing device 1 will be described. As shown in FIGS. 1 to 4, the asbestos removing device 1 has an asbestos layer A adhering to various buildings W such as a wall surface, a roof, and a beam (hereinafter, referred to as “wall surface W”) (see FIG. 2). A mist of a casing 11 that forms a closed space S (see FIG. 4) by covering the asbestos layer and a liquid such as water or a treatment agent for peeling the asbestos layer A from the wall surface W (hereinafter, referred to as “water”) It is provided with one or more nozzles 12 for injecting into the closed space S.

The asbestos removing device 1 further includes a liquid supply hose 16 for supplying water to the nozzle 12. The asbestos removing device 1 further includes a contaminant discharge hose 19 for discharging the contaminants that are separated from the wall surface W in the closed space S, crushed, and the asbestos adheres to the mist from the closed space S.

Hereinafter, the asbestos removing device 1 will be described in detail. The casing 11 has a disk-shaped base portion 111 facing the asbestos layer A when the asbestos removing device 1 removes the asbestos layer A adhering to the wall surface W (used state), and asbestos from the outer peripheral edge of the base portion 111 in the used state. It is provided with an annular peripheral wall portion 112 that projects toward the layer A. The casing 11 further includes a pair of rod-shaped handles 113, a brush 114 that airtightly and watertightly shields the inside and outside of the closed space S, and three or more adjusters 115.

As shown in FIGS. 1 to 3, the pair of handles 113 are arranged in a V shape apart from the base portion 111. Each handle 113 is fixed by a pair of rod-shaped supports 113a. The base end portion of each support 113a is fixed to the peripheral wall portion 112, and the tip end portion protrudes from the base portion 111 to fix the handle 113. The pair of C-shaped handles 113 are arranged so that the narrow side is located on the upper side and the wide side is located on the lower side in the used state.

The brush 114 projects in an annular shape from the edge of the peripheral wall portion 112 of the casing 11 and has flexibility so that it can be bent. In the used state, the tip of the brush 114 adheres to the asbestos layer A attached to the wall surface W, so that the airtightness and watertightness of the closed space S are maintained. Even if the asbestos layer A adheres to a beam with bolts and the head of the bolts or the like protrudes from the wall surface W, the brush 114 bends to maintain the airtightness and watertightness of the closed space S. ..

The adjuster 115 adjusts the position of the casing 11 from the asbestos layer A so that the tip of the brush 114 is in close contact with the asbestos layer A. The adjuster 115 includes an L-shaped bracket 115a fixed to the peripheral wall portion 112 of the casing 11 and a shaft-shaped member 115b attached to the bracket 115a along the peripheral wall portion 112 of the casing 11. A male screw is formed on the base end side of the shaft-shaped member 115b so that the fixed position can be adjusted with respect to the bracket 115a. The male screw is fixed to the bracket 115a by the nut 115c. The tip end side of the shaft-shaped member 115b is formed in a curved surface shape so as to make point contact with the asbestos layer A. For example, a ball that rotates at the tip of the shaft-shaped member 115b and exposes only the tip may be provided so that the ball can move smoothly on the asbestos layer A.

Water is supplied to the nozzle 12 from the liquid supply hose 16. Therefore, a connection port 116 for supplying the liquid supply hose 16 is provided at the center of the base portion 111 of the casing 11. The liquid supply hose 16 and the supply connection port 116 are connected by a rotary joint so that the connection portion of the liquid supply hose 16 can be swung. The liquid supply hose 16 has flexibility.

The water supplied from the liquid supply hose 16 is jetted as a mist by the nozzle 12. As shown in FIG. 4, the plurality of nozzles 12 are attached to a rod-shaped nozzle head 121 that rotates in the casing 11. A pipeline (not shown) is provided in the nozzle head 121 so that the supply connection port 116 of the liquid supply hose 16 and the nozzle 12 communicate with each other.

The center of the nozzle head 121 is rotatably supported by the center of the base portion 111. For example, three nozzles 12 are mounted on each tip side from the center of the nozzle head 121, for a total of six nozzles 12. However, the distances from the center to each nozzle 12 are different, and when the nozzle head 121 rotates, the mist is sprayed so as to draw a six-fold circle with respect to the asbestos layer A.

The base portion 111 of the casing 11 is provided with an air hose connection port 117 for connecting an air hose 17 for supplying high-pressure air so that mist is ejected from the nozzle 12. A pipeline (not shown) is provided in the nozzle head 121 so that the air hose connection port 117 and the nozzle 12 communicate with each other. Therefore, the nozzle head 121 is provided with a pipeline through which water flows and a pipeline through which high-pressure air flows. The base portion 111 of the casing 11 is provided with an exhaust port 118 adjacent to the air hose connection port 117. The exhaust port 118 allows only high-pressure air that was not used to generate mist to escape. The high-pressure air supplied from the air hose 17 is also used as a power source for rotating the nozzle head 121.

The mist is made to be injected by pressing the switch 15. When the switch 15 is pressed, the nozzle head 121 rotates. As shown in FIG. 3, the switch 15 is provided at the center of each handle 113. When the switches 15 of both handles 113 are pressed together, water is supplied from the liquid supply hose 16 to the nozzle 12, high pressure air is supplied from the air hose 17 to the nozzle 12, and high pressure water and high pressure air are supplied in the nozzle 12. Collides with each other, the water is refined, a mist containing a large number of fine water particles is formed, and the water is injected from the nozzle 12 at a pressure (high pressure) of about 100 to 300 MPa.

The mist injected at high pressure is sprayed on the asbestos layer A adhering to the wall surface W. The asbestos layer A is peeled from the wall surface W and crushed into shattered asbestos. Shattered asbestos adheres to the mist and becomes a mud-like, thick liquid-like contaminant (not shown). This contaminant is discharged from the closed space S by the contaminant discharge hose 19. The peripheral wall portion 112 of the casing 11 is provided with a discharge connection port 119 for connecting the contaminant discharge hose 19. The discharge connection port 119 is provided at a position where it is led out from the lower side in the used state. The contaminant discharge hose 19 is a bellows hose having a larger diameter and more flexibility than the liquid supply hose 16.

Next, an asbestos removing system including the asbestos removing device 1 will be described. As shown in FIG. 5, in addition to the asbestos removal device 1, the asbestos removal system includes a water storage tank 2, a vacuum device 3, a water tank 4, a high pressure pump 5, an air compressor 6, a treatment device 7, and water absorption. It is equipped with a hose 29.

A vacuum device 3 is installed between the asbestos removing device 1 and the water storage tank 2. A pollutant discharge hose 19 is provided between the asbestos removing device 1 and the vacuum device 3 and between the vacuum device 3 and the water tank 2. The pollutant discharge hose 19 stores the pollutant in the closed space S in the water tank 2.

In the water storage tank 2, heavy impurities in the stored pollutants settle in the lower layer, light impurities float in the upper layer, and circulating water containing no impurities is separated into the intermediate layer. Impurities containing asbestos are transferred to the processing apparatus 7 and asbestos is removed. The circulating water is drawn by the water absorption hose 29. The upstream end of the water absorption hose 29 may be submerged from the upper side of the water storage tank 2, or a connection port of the water absorption hose 29 communicating with the intermediate layer of the water storage tank 2 is provided, and the water absorption hose 29 is connected to this connection port. May be good. The circulating water is supplied to the water tank 4 by the water absorption hose 29.

Tap water and circulating water are stored in the water tank 4. The water tank 4 is replenished with tap water as well as circulating water. The high-pressure pump 5 is installed adjacent to the water tank 4 so that the water (including circulating water) stored in the water tank 4 reaches the nozzle 12. Since the air compressor 6 supplies high-pressure air to the nozzle 12 by the air hose 17, the upstream end of the air hose 17 is connected.

Here, the asbestos removal method will be described. The operator M grabs the handle 113 of the asbestos removing device 1 and directs the tip end portion of the adjuster 115 to the asbestos layer A attached to the wall surface W. In this state, the tip of the brush 114 is in close contact with the asbestos layer A. When the operator M presses each switch 15 provided on each handle 113 together, water is sucked into the liquid supply hose 16, high pressure air is sucked into the air hose 17, and high pressure mist is injected from the nozzle 12. .. The excess high pressure air is exhausted from the exhaust port 118.

At the same time, the nozzle head 121 is rotated by high pressure air. The plurality of nozzles 12 are arranged on the nozzle head 121 which is directed to each nozzle 12 at different distances in opposite directions. Therefore, the mist becomes planar in the closed space S and is ejected toward the asbestos layer A. The asbestos layer A is separated from the wall surface W by being sprayed with high-pressure mist, crushed, and becomes shattered asbestos.

This asbestos mixes with mist in the closed space S. Adhesion of asbestos to the mist produces contaminants such as thick, mud-like liquids. By injecting mist into the closed space S, excess water is not generated. The pollutant is discharged from the closed space S to the pollutant discharge hose 19.

As the worker M gradually moves the casing 11 along the wall surface W, the asbestos layer A adhering to the wall surface W is removed over a wide area. The brush 114 bends as the casing 11 moves. Therefore, the airtightness and watertightness of the closed space S are maintained, and shattered asbestos and contaminants do not leak from the closed space S to the periphery of the casing 11. Therefore, the worker M does not inhale asbestos.

The pollutant discharged into the pollutant discharge hose 19 is stored in the water storage tank 2. In the water storage tank 2, heavy impurities settle in the lower layer, light impurities float in the upper layer, and circulating water containing no impurities separates into the intermediate layer. Impurities containing asbestos are processed by the processing apparatus 7. The treated water that does not contain asbestos is drained.

The circulating water containing no impurities is stored in the water tank 4. The circulating water stored in the water tank 4 is stored in the water tank 4 by the water absorption hose 29, and is used as the raw water of the mist injected from the nozzle 12.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and modifications and improvements to the extent that the object of the present invention can be achieved are included in the present invention. ..

For example, in the asbestos removing device 1 of the above embodiment, a plurality of nozzles 12 are mounted on the nozzle head 121 and rotate in the casing 11. However, the asbestos removing device 1 may not include the nozzle head 121, and a large number of nozzles 12 may be arranged in the casing 11, or only one nozzle 12 for injecting mist over a wide range may be mounted. .. Further, even when a plurality of nozzles 12 are mounted on the nozzle head 121, they may be arranged at equal intervals.

In the above embodiment, the mist is ejected from the nozzle 12 at a pressure (high pressure) of about 100 to 300 MPa. However, for example, when a liquid containing a treatment agent or the like is ejected from the nozzle 12, the asbestos layer A is easily peeled off, or conversely, the asbestos layer A is strongly adhered, this pressure range. The mist may be sprayed outside.

In the above embodiment, a pair of handles 113 are provided in a V shape. However, the handle 113 may be configured in a U shape, or the U-shaped handle 13 may have a wide space between both ends thereof. Further, in the above embodiment, the switch 15 is illustrated like a button. However, the switch 15 may be configured like a lever.

The asbestos removal system in the above embodiment includes a water storage tank 2 for separating circulating water. However, in the asbestos removal system, all the pollutants discharged from the pollutant discharge hose 19 may be treated by the treatment device 7 so that the circulating water is not used.

Summarizing the above, the asbestos removing device 1 to which the present invention is applied suffices to have the following configuration, and various various embodiments can be taken.
That is, the asbestos removing device 1 to which the present invention is applied is
A casing 11 that forms a closed space S by covering the asbestos layer A adhering to the building W, and one or more nozzles 12 that inject a liquid for peeling the asbestos layer A into the closed space S as a mist. And with
The casing 11 is
A supply connection port 116 for connecting a liquid supply hose 16 for supplying the liquid to the nozzle 12.
Discharge connection port for connecting a pollutant discharge hose 19 for discharging contaminants adhering to the mist from asbestos separated from the building W and crushed in the closed space S from the closed space S. 119 and
Is equipped with.

According to the present asbestos removing device 1, mist is ejected from the nozzle 12 in the closed space S, the asbestos layer A is separated from the building W, and the crushed asbestos adheres to the mist and is discharged as a contaminant. Since the pollutant discharge hose 19 connected to the 119 discharges the liquid, the amount of liquid used can be suppressed and excess water can be prevented from being generated. Therefore, this asbestos removing device can be used even in a place where there is no space such as a city center.

One aspect of the asbestos removing device 1 according to the present invention is
The liquid supply hose 16 connected to the supply connection port 116 and
A pollutant discharge hose 19 connected to the discharge connection port 119,
Is equipped with.

According to the asbestos removing device 1, a liquid such as water is supplied from the liquid supply hose 16 connected to the supply connection port 116, mist can be injected from the nozzle 12, and the mist is connected to the discharge connection port 119. The pollutant can be discharged from the pollutant discharge hose 19.

Another aspect of the asbestos removing device 1 according to the present invention is
A nozzle head 121 for rotating the nozzle 12 in the casing 11 is provided.
In this case, a plurality of the nozzles 12 may be arranged in each direction from the center of the rotating nozzle head 121, and the distances from the center to each nozzle 12 may be different.

According to the asbestos removing device 1, the nozzle 12 rotates in the casing 11 to inject mist in a plane toward the asbestos layer A. Further, since the distances from the center of the nozzle head 121 to each nozzle 12 are different, it is possible to prevent a gap from being formed in the injected mist.

Another aspect of the asbestos removing device 1 according to the present invention is
An air hose connection port 117 for connecting an air hose 17 for supplying high-pressure air for turning the liquid into a mist to the nozzle 12, and
Exhaust port 118 for reducing the pressure of the high-pressure air,
Is equipped with.

According to the asbestos removing device 1, the mist pressure can be adjusted by providing the air hose connection port 117 and the exhaust port 118.

As yet another aspect of the asbestos removing device 1 according to the present invention,
The pressure of the mist injected from the nozzle 12 is 100 to 300 MPa.

According to the present asbestos removing device 1, the pressure of the mist injected from the nozzle 12 is set to 100 to 300 MPa, so that asbestos can be removed so as not to impose a heavy burden on the operator M.

The asbestos removal system according to the present invention is
Any asbestos removing device 1 according to the present invention and the contaminants discharged from the discharge connection port 119 are stored, and impurities in the contaminants settle in the lower layer and float in the upper layer, and do not contain impurities. A water storage tank 2 in which circulating water is separated into an intermediate layer is provided.
The circulating water stored in the water storage tank 2 is used as a liquid for peeling the asbestos layer A by the liquid supply hose 16.

According to this asbestos removal system, the amount of water used as a water source of mist is reduced by using the circulating water stored in the water storage tank 2 as a liquid for peeling the asbestos layer A from the building W. That is, water can be saved.

The asbestos removing method according to the present invention
A step of covering the asbestos layer A adhering to the building W with the casing 11 to form a closed space S, and
A step of injecting mist for peeling the asbestos layer A from the building W into the closed space S, and
A step in which asbestos separated from the building W in the closed space S and crushed discharges contaminants adhering to the mist from the closed space S.
including.

According to this asbestos removal method, mist can be sprayed to separate the asbestos layer A from the building W, so that the amount of liquid used can be suppressed, the amount of drainage can be reduced, and the work space can be minimized. it can. Therefore, this asbestos removal method can be used even in the city center where the work space is limited.

1 ・ ・ ・ ・ Asbestos removal device 11 ・ ・ ・ Casing 111 ・ ・ Base part 112 ・ ・ Peripheral wall part 113 ・ ・ Handle 114 ・ ・ Brush 116 ・ ・ Supply connection port 117 ・ ・ Air hose connection port 118 ・ ・ Exhaust port 119・ ・ Discharge connection port 12 ・ ・ ・ Nozzle 121 ・ ・ Nozzle head 16 ・ ・ ・ Liquid supply hose 17 ・ ・ ・ Air hose 19 ・ ・ ・ Pollutant discharge hose 2 ・ ・ ・ ・ Water storage tank A ・ ・ ・ ・ Asbestos layer S ... Closed space W ... Wall surface (building)

Claims (8)

It is provided with a casing that forms a closed space by covering the asbestos layer adhering to the building, and one or more nozzles that eject a liquid for peeling the asbestos layer into the closed space as a mist.
The casing is
A supply connection port for connecting a liquid supply hose for supplying the liquid to the nozzle,
A discharge connection port for connecting a pollutant discharge hose for discharging contaminants adhering to the mist from asbestos separated from the building in the closed space and crushed from the building, and a discharge connection port.
Asbestos removal device equipped with. The liquid supply hose connected to the supply connection port and
The pollutant discharge hose connected to the discharge connection port and
Is equipped with
The asbestos removing device according to claim 1. A nozzle head for rotating the nozzle in a casing is provided.
The asbestos removing device according to claim 1 or 2. A plurality of the nozzles are arranged in each direction from the center of the rotating nozzle head, and the distances from the center to each nozzle are different.
The asbestos removing device according to claim 3. An air hose connection port for connecting an air hose for supplying high-pressure air for turning the liquid into a mist to the nozzle, and
An exhaust port for reducing the pressure of the high-pressure air and
Is equipped with
The asbestos removing device according to any one of claims 1 to 4. The pressure of the mist injected from the nozzle is 100 to 300 MPa.
The asbestos removing device according to any one of claims 1 to 5. The asbestos removing device according to any one of claims 1 to 6 and the contaminants discharged from the discharge connection port are stored, and impurities in the contaminants settle in the lower layer and float in the upper layer. Equipped with a water tank, in which circulating water containing no impurities is separated into an intermediate layer,
An asbestos removal system that uses the circulating water stored in the water tank as a liquid for exfoliating the asbestos by the liquid supply hose. The process of covering the asbestos adhering to the building with a casing to form a closed space,
A step of injecting mist for peeling the asbestos layer from the building into the closed space, and
A process in which asbestos separated from a building in the closed space and crushed discharges contaminants adhering to the mist from the closed space.
Asbestos removal methods including.

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