JP3129390U - Asbestos removal machine - Google Patents

Abstract

[PROBLEMS] To remove hand-held asbestos that can be easily and efficiently peeled off and transported as sprayed asbestos on ceilings and walls without the need for spraying anti-scattering agents. Provide a machine.
A cup-like or dew-like stripper 7 or 7 'having a hood 7a elastically contacting the asbestos spray surface at the tip is provided at the tip of a suction pipe 6 having a hand-held operation portion 8. A plurality of mist injection nozzles 14 that are inserted into the peeling device and have an angle at which the injection axis intersects ahead of the opening position of the peeling device, a mist generator 12 fixed at an appropriate position of the suction pipe 6, and the suction pipe 6 A mist pumping conduit 13, 13 having a tip connected to the mist injection nozzles 14, 14 and a rear end connected to the mist generator outlet side, and the mist generator 12. The mist generator 12 is connected to the liquid supply pipe so as to intersect the compressed air flow path in the axial direction. Comprising an ejector unit, the hand-held operating unit 8 and in the vicinity thereof, provided with a supply control mechanism 10 of the compressed air to said mist generator 12.
[Selection] Figure 3

Description

  The present invention relates to an asbestos removal machine.

  Asbestos is a fine mineral fiber that can be taken from serpentine, etc., for the purposes of sound absorption, heat insulation, dew condensation, etc., heat-resistant steel coating, machine room, air conditioning machine room, school classroom, laboratory, music room, gymnasium, etc. As a construction material, it was actively sprayed.

However, asbestos does not decompose or alter semipermanently under normal circumstances, and even when it sinks to the ground surface, it ascends easily as dust and remains in the general environment for a long time. And it has been clarified that asbestos floating in the air is sucked to cause a serious obstacle to health.

For this reason, it is mandatory to remove asbestos and its contents, and in order to ensure safety, the work area is isolated with a plastic sheet to prevent dusting and scattering, the pressure is reduced, and an anti-scattering agent is applied. Asbestos is moistened, workers are required to wear protective clothing to their feet and wear a dust mask.

However, the problem is the asbestos exfoliation work, and conventionally there is no equipment that can efficiently and simply do this, so the anti-scattering agent is pumped with a pump and sprayed with a spray to wet the asbestos, It was done by peeling off manually using a jig such as a scraper or a wire brush.
For this reason, workability is poor, and high places such as the ceiling are to be stripped using both hands on the temporary scaffolding, so harsh labor is required, and asbestos pieces dropped on the floor are sucked out with a vacuum cleaner There was a lot of problem with safety because another work was required.

  As a countermeasure against this, asbestos that has been peeled and wetted has conventionally been provided with a jet mechanism that injects a high-pressure liquid into the asbestos layer at the center of the cover by contacting a cover that has an asbestos layer on the surface with a stepped enlargement. An apparatus is known in which a mud mixture of liquid and liquid is stored in a cover, sucked outside the cover through a pump, and led to a liquid separator for processing.

However, this prior art performs asbestos peeling by injecting high-pressure water to a central point in the cover, so that the separation efficiency is not good, and high-pressure water is introduced and injected and collected in the cover together with the asbestos pieces. As the cover becomes larger and heavier, it becomes very heavy labor for workers to handle, and it is necessary to change in a short time, and because special equipment such as a jet pump is used, the equipment becomes expensive. There was a problem. Therefore, in practice, it has been inevitably performed manually using a jig such as a scraper or a wire brush as described above.
Japanese Patent No. 2707276

  The present invention has been made to solve the above-described problems, and its purpose is to easily and efficiently spray asbestos on the ceiling and wall without the need for spraying anti-scattering agents. It is an object of the present invention to provide a hand-held asbestos removal machine that can be peeled off and transported and is relatively simple, lightweight, and easy to handle.

  In order to achieve the above object, an asbestos removal machine according to the present invention has a suction tube having a hand-held operation unit in the latter half position and a hood positioned at the distal end of the suction tube and elastically contacting the asbestos spraying surface. A cup-shaped or funnel-shaped stripper, a plurality of mist spray nozzles inserted into the stripper and having an angle at which the spray axis intersects ahead of the stripper opening position, and a mist fixed in place on the suction pipe A generator, a mist pumping conduit arranged along the longitudinal direction of the outer surface of the suction pipe, having a tip connected to each mist injection nozzle and a rear end connected to the mist generator outlet side, and the mist generator An ejector portion having a compressed air supply pipe connected to the inlet side of the air compressor and having a rear end connected to an air compressor, wherein the mist generator is connected to the liquid supply pipe so as to intersect the compressed air flow path in the axial direction Wherein the a in the vicinity of the hand-held operating unit is characterized in that a supply control mechanism of the compressed air.

  According to the present invention, the handheld operating portion of the suction pipe is grasped and the peeling device at the tip of the suction pipe is applied to the asbestos spraying surface. The liquid is generated by the negative pressure generated when high-pressure compressed air passes through the mist generator. It is mixed with compressed air and sent to a plurality of mist injection nozzles as a mist mixed with gas and liquid, and the mist impacts obliquely from the opposite position in a certain range of the asbestos spray surface in the outline of the injection nozzle stripper body. Since it is sprayed, the asbestos spraying surface portion is surely peeled off at the same time the surface is wetted. Therefore, efficient peeling can be performed. The peeled asbestos piece is sucked by the negative pressure in the peeler main body and conveyed to the suction machine, and therefore the working chamber is not soiled.

The suction tube can be made of an aluminum-based metal, and does not increase in weight by introducing only a liquid as a jet stream, nor does it add weight by accumulating mud in the stripper, making it lightweight and easy to handle. It becomes a good thing, and it can grasp the hand-held operation part, hold it like a bazooka gun, move lightly along the target surface, and perform the peeling work.
Further, since the mist is generated by the ejector, pumps such as a jet pump are not required, and an excellent effect such as an inexpensive system can be obtained.

The peeler consists of two types, a peeler having a straight connecting pipe part and a peeler having a connecting pipe part with an elbow, and is detachably connected to the tip of the suction pipe. Yes.
According to this, the suction pipe including the handheld operation part, the mist generator, the mist pumping pipe, the compressed air supply pipe, and the control mechanism are shared parts. is there.

The suction pipe is provided with a Y-shaped branch pipe having a horizontal pipe section and a slant pipe section at the tip, and a peeling device having a straight connection pipe section is selectively connected to the horizontal pipe section and the slant pipe section. It has become.
According to this, a suction pipe including a hand-held operation unit, a mist generator, a mist pumping conduit, a compressed air supply tube, and a control mechanism are shared parts, and only one type of stripper is sufficient, and a ceiling and a wall can be used in one machine. It is very economical because it can remove asbestos.

The control mechanism has an on-off valve and a pilot valve with a trigger provided in a hand-held operation unit for operating the valve, and compressed air is supplied to the mist generator only when the trigger is operated. Yes.
According to this, since the gas-liquid mixed mist can be freely fed and stopped while gripping the handheld operation unit and directing the suction pipe toward the surface to be peeled, the handling property is improved.

An accumulator is interposed in a part of the compressed air piping.
According to this, when the pilot valve with trigger is not operated, the on-off valve is closed, the supply of compressed air from the compressor to the mist generator is stopped, the accumulator accumulates pressure, and the pilot valve with trigger is operated. In addition, since the accumulated compressed air is instantaneously supplied in a large amount in addition to the compressed air from the compressor, the impact peeling force by the plurality of injection nozzles can be further increased.
The accumulator comprises a large diameter inflatable hose.
According to this, the accumulator can be configured with a simple and inexpensive structure.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 and 2 show an example of use of the asbestos removal machine according to the present invention, where R is a work area such as a room where sprayed asbestos to be removed is attached, and is isolated from the outside by a plastic film, And the pressure is reduced. C is a ceiling surface having the sprayed asbestos layer A, and W is a wall surface having the sprayed asbestos layer A.

Reference numeral 1 denotes an asbestos removal machine according to the present invention, which is held by a worker in the work area R and is being removed. Reference numeral 2 denotes a primary separator composed of a cyclone dust collector or the like, and is disposed in the work area R.
Reference numeral 3 denotes a secondary separator composed of a suction fan and a filter dust collector connected to the primary separator 2, and is arranged outside the work area R. Reference numeral 4 denotes an air compressor, which is disposed outside the work area R. Reference numeral 5 denotes a tank of water or a liquid obtained by adding chemicals for preventing scattering to this, and is disposed in the work area R.

  3 to 7 show a first embodiment of the present invention asbestos removal machine, wherein 6 is a suction pipe made of a lightweight material such as aluminum, and a tapered part 61 for connection is formed at the tip, and the rear part. Is formed with a hand portion 60 inclined at an angle of about 20 to 40 degrees, which is suitable for being hung on the shoulder or sandwiched on the side. A removal asbestos transfer hose 15 connected to the secondary separator 3 is connected to the rear end of the hand portion 60.

7 is a peeler made of a lightweight material such as aluminum and connected to the tip of the suction pipe 6. For example, it has a cup-like or funnel-like shape with a diameter of 200 mm, and a connecting cylinder part 70 is provided at the rear end. Have. In this example, in order to remove asbestos on the ceiling, the connecting cylinder part 70 has an elbow 71 bent at about 60 degrees.

Reference numeral 8 denotes an arm-like handheld operation unit fixed so as to extend from the proximal portion 60 of the suction tube 6 in a right angle direction, and 9 is a grip fixed to the suction tube 6 at a position appropriately spaced from the proximal portion 60. It is a handle and is provided so that when the hand-held operation unit 8 is grasped with one hand, it is easily grasped with the other hand and the peeling device 7 is directed toward the target.

  Reference numeral 10 denotes a hand portion 60 in the vicinity of the hand-held operation portion 8 and a control mechanism disposed in the hand-held operation portion 8. The hand portion 60 includes a compressed air on-off valve 10a as a main valve, and a flow rate adjusting valve. 10 b and a liquid supply amount adjustment valve 10 c are attached, and an air supply hose 16 from the air compressor 4 is connected to the flow rate adjustment valve 10 b, and the liquid supply amount adjustment valve 10 c is The liquid tank 5 is connected. The on-off valve 10a for compressed air is a normally closed type direction switching valve.

A pilot valve 10 d for switching is built in the handheld operation unit 8, and a trigger 100 protrudes from the handheld operation unit 8. The pilot valve 10d is a normally closed direction switching valve, a branch hose 160 from an air supply hose 16 is connected to the pump port, and an actuator port is connected to a pilot chamber of the compressed air on-off valve 10a.

Reference numeral 11 denotes a compressed air conduit connected to the outlet side of the on-off valve for compressed air, and extends in the distal direction of the suction pipe 6.
Reference numeral 12 denotes a mist generator fixed to the front half portion of the suction pipe 6. As shown in FIG. 6, a small-diameter nozzle 121 communicating with the compressed air conduit 11 is inserted into the casing 120 in the axial direction. The ejector portion is configured by facing the liquid inlet 122 connected to the liquid supply hose 17 (the rigid pipe 17a after the liquid supply amount adjusting valve 10c) in a relationship orthogonal to the above. The enlarged diameter passage 123 downstream of the small diameter nozzle 121 leads to a branch connection portion, and two mist pressure-feeding hoses 13 and 13 extending along the side surface of the stripper as shown in FIG. 4 are connected to the branch connection portion. Each is connected.

The peeling device 7 has an abutment hood 7a made of an elastic material such as rubber that is brought into close contact with the asbestos surface from the outer periphery in the vicinity of the opening. The abutment hood 7a is fitted and fixed to the tapered cylindrical portion in front of the abutment hood 7a. The mist injection nozzles 14 and 14 connected to the mist pumping hose 13 are respectively inserted at 180 ° symmetrical positions on the center line CL of the opening.

Since there are two mist injection nozzles 14 in this example, as shown in FIGS. 4 and 5, the injection axis is focused on the center line CL of the separator 7 and ahead of the opening position of the separator, and the asbestos surface The angle that is not focused on, for example, 60 degrees with respect to the opening line and 30 degrees with respect to the tapered surface, and therefore, a jet-like injection state occurs on the asbestos surface.

The compressed air supply hose 16 is composed of a non-expandable hose until reaching the flow rate adjusting valve 10b. In order to increase the instantaneous force of mist injection by the mist injection nozzle 14 and enhance the asbestos peeling effect, The accumulator 16a is provided at a position or range up to the discharge part of the air compressor 4.
The accumulator 16a may be a commercially available dedicated device or the like. However, in order to reduce the cost, it is preferable that the non-inflatable hose is a relatively large diameter (for example, 1 to 2 inches) if the non-inflatable hose is 3/4 inches. The inflatable hose is provided with a required length from the discharge part of the air compressor 4 or is interposed by about 1 to 2 m in a part at a required distance from the discharge part of the air compressor 4.

For removing the asbestos layer A on the wall W, as shown in FIG. 8, a peeling device 7 ′ having a straight connecting cylinder portion 70 is used and is fitted to the tip of the suction pipe 6 described above. . The suction pipes 6 may be different from each other, but preferably, the suction pipe 6 is shared, and the wall peeling device 7 'and the ceiling peeling device 7 are exchanged. In this case, the mist pumping hose 13 from the mist generator 12 may be removed from the mist injection nozzle 14 and connected to the mist injection nozzle of the peeling device to be used.

FIG. 9 shows a second embodiment of the present invention. In this embodiment, a peeling device 7 having a Y-shaped branch pipe 6a having a horizontal pipe section 600 and a slant pipe section 601 at the tip of the suction pipe 6 and having the straight connection pipe section 70 shown in FIG. The horizontal pipe part 600 and the oblique pipe part 601 are selectively connected. In this example, the peeling device 7 is connected to the inclined tube portion 601, and the opening of one tube portion (in this example, the horizontal tube portion 600) is closed by a closing member 18 such as a rubber plug.
Since the other configuration is the same as that of the first embodiment, the description thereof is omitted, and only the same reference numerals are given to the same portions.

In addition, what is illustrated is a few examples of this invention, and is not limited to this.
1) The mist generator 12 is arranged near the tip of the suction pipe 6 to suppress separation of the mixed liquid. However, when separation of the liquid can be avoided, a position close to the hand-held operation unit 8, for example, control It may be arranged at a position close to the mechanism 10.
2) Either or both of the flow rate adjustment valve 10b and the liquid supply amount adjustment valve 10 of the control mechanism 10 may be interposed in the middle of the compressed air supply hose 16 instead of the suction pipe portion.

3) In principle, the suction pipe 6 is used by an operator, but it can also be applied to asbestos peeling work automatically or semi-automatically by mounting it on a gantry (robot) that can move in the XYZ directions. .
4) The number of the mist injection nozzles 14 may be three or more. In this case, the mist injection nozzles 14 are arranged at equal intervals and at an angle that does not intersect at the focal point on the opening position of the separator, that is, on the asbestos surface. Is done.

The usage and operation of the embodiment will be described. A transport hose 15 is connected to the suction pipe 6, a compressed air supply hose 16 is connected to the flow rate adjustment valve 10a of the control mechanism 10, and a liquid supply hose 17 is connected to the liquid supply amount adjustment valve 10c. Preparation is completed by connecting each.
In the peeling operation, the handheld operation unit 8 is held with one hand, the handle 9 is grasped with another hand, and the opening side of the peeling device 7 (abutment hood) is peeled off as if to handle a bazooka gun. C asbestos layer A. Thereby, the area | region enclosed with opening by the contact | abutting hood 7a being compressed will be in a sealing state.

When the trigger 100 of the handheld operation unit 8 is operated, the pilot valve 10d is opened, and the air pressure acts on the pilot chamber of the on-off valve 10a for compressed air from the compressor 4 through the branch portion of the compressed air supply hose 16a. Therefore, the on-off valve 10a for compressed air is opened, is pumped through the compressed air pipe 11, and passes through the mist generator 12 on the way.
In the mist generator 12, the flow velocity is increased by the nozzle 121, and a negative pressure is generated by being discharged into the expansion chamber 123. As a result, liquid is sucked from the side and becomes mist-like, and the air is Mixed with mist.

The mist is branched in two directions, sent to the mist injection nozzles 14 and 14 through the mist pressure-feeding hoses 13 and 13, and high-pressure injection from the mist injection nozzles 14 and 14 toward the asbestos layer. The gas / liquid mixture ratio of the mist is adjusted by the opening degree of the flow rate adjusting valve 10b and the liquid supply amount adjusting valve 10c. These valves are easy to operate because they are in the vicinity of the hand-held operation unit 8.

  Since the mist injection nozzles 14 and 14 are opposed to each other at an angle at which the focal point does not intersect on the asbestos surface, as shown in FIG. 5, the asbestos surface A1 having a predetermined area surrounded by the opening contour of the peeling device 7 is used. Thus, the impact force of the high-pressure mist acts to make a break, and is driven in a wedge shape between the asbestos layer A and the wall surface below it, for example, from an oblique angle of 45 to 60 degrees. Therefore, the asbestos layer A can be peeled off very efficiently and reliably, and the asbestos layer A is wetted by the liquid particles contained in the mist, so that no scattering occurs.

  The stripped asbestos piece and the air in which the liquid component is almost consumed by adhering to the asbestos is continuously sucked by the negative pressure acting in the stripper, passes through the suction pipe 6 and is conveyed to the primary separator by the transport hose 15. The asbestos with high specific gravity is collected by cyclone movement. Then, the air flow is sucked into the secondary separator 3 and purified, and the treatment can be performed without causing scattering of the separated asbestos.

Therefore, an operator can peel and carry out asbestos continuously and efficiently by moving the peeling device 7 along the asbestos surface while viewing the peeling state.
During this operation, if the trigger 100 is stopped, the pilot valve 10d is closed, and the pilot pressure does not act on the pilot chamber of the compressed air on / off valve 12a. Therefore, the compressed air on / off valve 12a is closed, The supply of the compressed air to the stripper 7 is stopped, and the operation of the mist generator 12 is stopped accordingly, and the liquid is not sucked.

  By stopping the supply of compressed air, the accumulator 16a (in the embodiment, a large-diameter inflatable hose) is expanded by the compressed air pressure sent from the compressor 4 and accumulates pressure. When the trigger 100 is operated again to open the on-off valve 10a for compressed air, the compressed air flows and the accumulator 16a contracts, and the high-pressure air accumulated here is added and sent to the mist injection nozzles 14, 14. As a result, the mist instantaneously increases the pressure and gives a strong impact to the asbestos surface. For this reason, even if an asbestos layer with strong adhesion exists, peeling can be performed accurately.

The same applies to the case where the asbestos layer A on the wall W is peeled and removed. However, in the first embodiment, the peeler 7 is removed from the tip of the suction pipe 6 and replaced with a peeler 7 'having a straight cylindrical portion 70. And may be connected to the suction pipe 6.
According to this, since the suction pipe 6 including the hand-held operation unit 8, the mist generator 12 having the ejector unit, the mist pressure feeding hoses 13 and 13, and the control mechanism 10 are shared parts, the asbestos peeling of the ceiling and the wall can be performed in one machine. There is an advantage that can be done.

In the second embodiment, the suction pipe 6 includes the Y-shaped branch pipe 6a having the horizontal pipe portion 600 and the oblique pipe portion 601, so that the suction pipe 6 including the hand-held operation portion 8 and one kind of peeling device 7 are provided. ′ Can remove asbestos from the ceiling and wall.

It is a schematic diagram which shows the state which is performing peeling work using the asbestos removal machine by this invention. It is an enlarged view of FIG. It is a side view of the asbestos removal machine applied for ceiling use. It is a top view of the asbestos removal machine applied for ceiling use. It is a partial notch top view which shows the isolation state. It is sectional drawing of a mist generator part. It is a circuit diagram which shows the control system of compressed air. It is a side view of the asbestos removal machine applied for walls. It is a partial side view which shows 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Asbestos removal machine 2, 3 Dust collector 4 Air compressor 5 Liquid tank 6 Suction pipe 6a Y-shaped branch pipe 7 Peeling device 8 Hand-held operation part 10 Control mechanism 10a On-off valve 10d Pilot valve 100 Trigger
12 Mist Generator 13 Mist Pressure Hose 14 Mist Injection Nozzle 15 Suction Hose 16 Compressed Air Supply Hose 17 Liquid Supply Hose
600 Horizontal pipe section 601 Slanted pipe section

Claims (6)

  A suction tube 6 having a hand-held operation unit 8 in the latter half position, and a cup-shaped or funnel-shaped peeling device 7 having a hood 7a positioned at the distal end of the suction tube 6 and elastically contacting the asbestos spraying surface, 7 ', a plurality of mist injection nozzles 14 which are inserted into the peeling device and have an angle at which the injection axis intersects ahead of the opening position of the peeling device, and a mist generator 12 fixed at an appropriate position of the suction pipe 6. Mist pumping conduits 13, 13 arranged along the longitudinal direction of the outer surface of the suction pipe 6, with leading ends connected to the mist injection nozzles 14, 14 and rear ends connected to the mist generator outlet side, The mist generator 12 includes compressed air supply pipes 11 and 16 connected to the inlet side of the mist generator 12 and connected to the air compressor 4 at the rear end. The mist generator 12 is a liquid that intersects with the compressed air flow path in the axial direction. Supply piping 1 There comprising the connected ejector unit, wherein a in the vicinity of the hand-held operating unit 8, asbestos removal machine, characterized in that a supply control mechanism 10 of the compressed air.   The peeling device is composed of two types, a peeling device 7 ′ having a straight connecting pipe portion and a peeling device 7 having a connecting pipe portion with an elbow, and is detachably connected to the tip of the suction pipe 6. The asbestos removal machine according to claim 1, which is configured as described above.   The suction pipe 6 is provided with a Y-shaped branch pipe 6 a having a horizontal pipe part 600 and a slant pipe part 601 at the tip, and a peeling device 7 ′ having a straight connection pipe part is connected to the horizontal pipe part 600 and the slant pipe part 601. The asbestos removal machine according to claim 1, wherein the asbestos removal machine is selectively connected.   The control mechanism 10 includes an on-off valve 10a and a pilot valve 10d with a trigger provided in the hand-held operation unit 8 to operate the valve 10a. The compressed air is supplied to the mist generator 12 only when the trigger is operated. The asbestos removal machine according to any one of claims 1 to 3.   The asbestos removal machine according to any one of claims 1 to 4, wherein an accumulator 16a is interposed in a part of the compressed air piping. The said accumulator 16a is an asbestos removal machine of Claim 1 which consists of an inflatable hose of a large diameter and required length.

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