JPH074580B2 - Asbestos processing equipment for metal roof - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for removing asbestos attached to the back side of a metal roofing material.

[Conventional technology]

Sprayed asbestos or asbestos paper is attached as a heat insulating material or a condensation preventing material to a part of metal roofing materials used in factories and gymnasiums. However, there is a concern that the asbestos scattered due to the deterioration over time of the sprayed material may pose a risk to the human body. Therefore, asbestos is being actively treated especially for buildings such as schools.

[Problems to be Solved by the Invention]

However, buildings that use metal roofing materials such as factories and gymnasiums generally have high eaves heights, or in order to process the asbestos attached to the attic, install scaffolds throughout the factory, Alternatively, an aerial work vehicle is required, which increases the cost required for temporary construction. Further, in a large-scale factory, it is often difficult to partition the processing work space and completely seal it, and the cost required for this is enormous. For this reason, for example, a sheet is put under the roof to create a sealed space between the roof and the sheet, and an exhaust blower equipped with a high-efficiency filter is installed in this space to keep the space between the roof and the sheet against the outside air. After negative pressure is applied, an asbestos shatterproof agent is sprayed on the attic to make sure that shatterproof measures are taken, then the roof boards are removed in sequence, and asbestos is removed in a closed treatment room on the roof. Is cost-effective.

The problem with such a treatment method is the method of removing asbestos from the roof that has been removed. That is, if the removal work is manually performed inside the processing chamber, the asbestos exposure of the worker becomes a problem. Therefore, a processing device that does not receive asbestos exposure during processing has been demanded. Further, it is considered that the processing chamber can be made relatively simple if the asbestos is not scattered during the removal.

Therefore, the present invention can be installed relatively easily on the roof, by passing the roof material with asbestos on the back, immediately after removed from the roof, it is possible to reliably remove and process asbestos, Moreover, it is an object of the present invention to provide an asbestos treatment device for a metal roof that does not cause the asbestos fibers to be scattered at that time.

[Means for Solving the Problems]

The present invention provides an asbestos removing section on the inlet side in a box-shaped case having an entrance and an exit through which a roofing material passes, and an asbestos-consolidating treatment section is provided on the exit side, and the asbestos removing section is provided. Is equipped with a rotating brush and means for maintaining a negative pressure state, and an asbestos treatment device for a metal roof, which is provided with a solidifying agent (scattering prevention agent) applying means in the solidifying treatment section. The above problem was solved.

[Action]

When the roof material is sent from the entrance of the case, the roof material first
Asbestos is removed by passing over a rotating brush. At this time, since the asbestos removing portion is in a negative pressure state, the asbestos fibers harmful to the human body are prevented from scattering outside. The roofing material is then sprayed with a solidifying agent as it passes through the solidification treatment section, and after the residual asbestos fine asbestos is solidified and contained, it is sent out from the outlet. .

〔Example〕

A preferred embodiment of the present invention will be described with reference to the drawings.
In the figure, 1 is a closed box-shaped case, and an inlet 2 is formed in the upper part of one side surface, and an outlet 3 is formed in the upper part of the opposite side surface. Monitoring windows 4 and 5 are arranged on the upper surface and the side surfaces of the case 1 as necessary so that the inside can be seen through. In addition, the entrance 2 and the exit 3 are roofing materials 6
The opening is made as small as possible so that the curtain 7 can pass therethrough, but it is preferable that a curtain 7 having a shape corresponding to the cross-sectional shape of the roofing material 6 (trapezoidal wave shape in the figure) is hung. 8 is entrance 2
The support rolls attached to the outside of the roof, and 9 are the support rolls attached to the outside of the outlet 3.
Support the entry and exit of.

In the asbestos removing section, 10 is a receiving roll and 11 is a driving roll, and the roof material 6 fed from the inlet 2 is bitten between the two, and further conveyed to the back. The receiving roll 10 has a shape corresponding to the shape of the back surface of the roofing material 6 (abacus shape in the figure), and the drive roll 11 is a simple cylinder and is rotationally driven as described later. 12 is a rough removal brush,
For example, like the receiving roll 10, it has a shape corresponding to the back surface shape of the roof material 6 so that the entire back surface of the roof material 6 can be brushed thoroughly (see FIG. 3). 13 is a freely rotating cylindrical pressing roll, which is arranged above the rough removing brush 12. Reference numeral 14 is a finishing brush having the same shape as the rough removal brush 12, and 15 is a cylindrical pressing roll. The rough removal brush 12 and the finishing brush 14 are constantly pressed against the back surface of the roofing material 6 by a spring or the like.
The material of each brush is appropriately selected according to the type of asbestos.
16 is a receiving roll, 17 is a driving roll, and the roofing material 6 is between them.
Eat it and carry it out to the exit 3. The receiving roll 16 and the driving roll 17 are the receiving roll 10 and the driving roll 11, respectively.
It has the same shape as. Reference numeral 18 is a motor, which is provided with a rough removing brush 12 and a finishing brush 14 via belts 19 and 20 or a chain.
Are usually rotationally driven in the opposite direction (arrow direction in FIG. 2) to the traveling direction of the roof member 6. Also, the motor 18 is a belt
The drive rolls 11, 17 are rotationally driven via 21, 22 or a chain. The reference numeral 23 designates a hopper for collecting the scraped off asbestos, which covers the lower side from the receiving roll 10 to the receiving roll 16 and the bottom is inclined downward toward the drop opening 24 in the central portion. Blocks 25 and 26 are provided in the hopper 23 to prevent Iwata from scattering outward. 27 is a storage box installed under the hopper 23, which can be taken out of the case 1. Reference numeral 28 denotes a dust collector connected to a dust collector 29 equipped with a high-performance filter, and the inside of the asbestos removing portion of the dust collector 29 during operation is in a negative pressure state via the dust collector 28. 30
Is a shielding plate that shields the asbestos removing portion and the consolidation processing portion described later. 31 to 35 are air nozzles for forming an air curtain. In the illustrated example, the inlet 2 and the insides of the blocking plates 25 and 26,
It is placed between both brushes and at the exit of the asbestos removal section. Due to the action of the dust collector 29, the inside of the case 1 has a sufficiently negative pressure with respect to the outside air, so that the outside air flows in from the inlet 2 and the outlet 3. Therefore, the asbestos fibers do not leak to the outside, but the installation of the air nozzles 31, 35 completely prevents the asbestos fibers from leaking to the outside.

The consolidation processing section is composed of a consolidation agent injection nozzle 36 and a sponge roll.
37, a hopper 38, and a limit switch 39. The limit switch 39 is attached to the shielding plate 30, detects the entry and passage of the roofing material 6, and controls the injection timing of the solidifying agent. The solidifying agent injection nozzle 36 is installed upward in the hopper 38 and injects the solidifying agent onto the back surface of the roofing material 6. The sponge roll 37 has the same shape as the receiving rolls 10 and 16, and serves to evenly disperse the injected solidifying agent by contacting the back surface of the roofing material 6. Reference numeral 40 is a pressing roll, which freely rotates together with the sponge roll 37. The binding agent may be applied by a roller. In addition, 41 in FIG. 2 is a conveyor device for sending the roofing material 6 to this device.

In the above configuration, the roofing material 6 conveyed by the conveyor device 41 is fed to the asbestos removing section from the inlet 2 while being supported by the support roll 8. There, the roofing material 6 is eaten between the receiving roll 10 and the driving roll 11,
Further, it is drawn inward, and the rough removal brush 12 first brushes the entire back surface to roughly remove asbestos. Subsequently, the second brushing is performed on the finishing brush 14 to substantially remove the remaining asbestos. Asbestos fibers are scattered along with this brushing, but since the inside of the hopper 23 is in a negative pressure state due to the action of the dust collector 29, the asbestos is forcibly sucked into the storage box 27 from the drop port 24. Further, an air curtain 31 is formed at the inlet 2 by the air nozzle 31, and the asbestos fibers are prevented from scattering outside. At the same time, the air curtain formed by the plurality of air nozzles 32 to 35 suppresses the asbestos fibers from scattering and is forcibly guided downward.

The roofing material 6 is further conveyed to the consolidation treatment section by the actions of the receiving roll 10 and the driving roll 11, and the receiving roll 16 and the driving roll 17, and the consolidation treatment of the residual asbestos is performed. That is, when the tip of the roofing material 6 passes through the shielding plate 30, the limit switch 39 operates, and the solidifying agent spray nozzle 36 continues to spray the solidifying agent on the back surface of the roofing material 6. Then, by passing through the sponge roll 37, the applied state of the injected solidifying agent is made uniform and then sent out from the outlet 3.
When the rear end of the roof material 6 passes over the limit switch 39,
The limit switch 39 operates to stop the injection of the solidifying agent.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY The present invention is as described above, has a simple structure, can be easily installed on a roof, etc., and can remove asbestos and consolidate it easily and reliably by passing a roof material. It also has the effect of not causing the asbestos fibers to scatter.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is an internal configuration diagram thereof, and FIG. 3 is a diagram showing an example of the shape of a rotary brush. Explanation of symbols 1 …… Case 2 …… Inlet 3 …… Exit, 6 …… Roofing material 10,16 …… Receiving roll, 11,17 …… Drive roll 12 …… Rough removal brush, 13,15 …… Presser foot Roll 14 …… Finishing brush, 18 …… Motor 23 …… Hopper, 27 …… Collection box 29 …… Dust collector, 30 …… Separator 31 ～ 35 …… Air nozzle, 26 …… Caking agent injection nozzle 37 …… Sponge roll, 38 …… Hopper 39 …… Limit switch

Claims (2)

[Claims] 1. An asbestos removal section is provided on the inlet side and an asbestos consolidation treatment section is provided on the outlet side in a box-shaped case having an entrance and an exit through which a roofing material passes. An asbestos treatment device for a metal roof, wherein a rotating brush is installed in the section and means for maintaining a negative pressure state is provided, and a solidifying agent applying unit is installed in the solidifying section. 2. The asbestos processing apparatus for a metal roof according to claim 1, wherein the asbestos removing section is provided with a roof material conveying roll.