JP4341411B2 - Membrane material removal method and membrane material removal apparatus - Google Patents

Description

The present invention relates to a film material removing method and a film material removing apparatus , and more particularly to a film material removing method and a film material removing apparatus for removing a film material attached to a base.

Conventionally, for example, when removing a film-like material such as an elastic coating film having a thickness of about 1 mm attached to a base such as a wall or a floor, first, a drug (removerer) such as dilute sulfuric acid is applied to the film-like material to be removed. ), And then the object to be removed is scraped with a keren rod or the like, and then the film-like material shaved with high-pressure water or the like is washed away. In addition, the technique using a medicine in this way is described as the prior art in Patent Document 1.
JP 2002-177876 A

However, in the case of a film-like material removal method using a remover, the three steps of spraying the remover, scraping with a keren rod, etc., and washing with high-pressure water, etc., require a long construction period and complicated work. was there.
In addition, since the remover is strongly acidic, there is a risk of damaging the surface of the substrate when the remover is sprayed, and there is a risk of adversely affecting the health of the operator.
Furthermore, when washing with high-pressure water, countermeasures and wastewater treatment for preventing the washing water from flowing out are necessary, and the work is very complicated.

An object of the present invention is to provide a film-like material removing method and a film-like material removing apparatus that can easily remove a film-like material such as a coating film from the ground without adversely affecting an operator, the ground, or the like .

The present invention is a film material removing method for removing a film material adhered to a base, wherein a joint portion between the film material to be removed and the base is disposed around a spray nozzle of a spray nozzle. while hitting collision by the projecting member provided, towards the junction was the Da突injecting dry ice particles from the injection port, and removing said film-like material from the underlayer.
Here, as the base, for example, a wall or a floor can be considered, and concrete or the like can be adopted as the material thereof. Moreover, as a film-like material, a coating film including an elastic coating film made of urethane, a waterproof sheet, or the like is conceivable, and any film material may be used as long as it adheres to the base.

According to the present invention, the projecting member provided in the peripheral portion of the spray nozzle of the spray nozzle hits the joint portion between the film-like material and the base, and this joint portion is scratched while being scratched. By spraying dry ice particles from the injection port toward the joined portion and using both the impact force and the impact force of the dry ice particles, the film material adhering to the base can be easily removed.
Furthermore, since the dry ice particles sublime at room temperature after colliding with the joint portion, for example, compared with the case where the film-like material is removed by colliding with high-pressure water, the cleaning agent does not remain, so the film can be more easily formed. The material can be removed.
Further, since the dry ice particles have a specific gravity of 1.56 and a relatively small mass, the impact force on the joint portion is relatively small, so that damage to the ground can be suppressed.
Further, since the joint portion between the film material and the base is struck, the base is not directly struck, so that damage to the base can be suppressed.
In addition, since dry ice grains are weakly acidic, there is almost no influence on the human body, and it is possible to reliably prevent the influence on the health of the worker as compared with the case where a drug such as a strongly acidic remover is used.

  The present invention is a film material removing device for removing a film material adhering to a base, a dry ice particle supply device for supplying dry ice particles, a compressor for generating compressed air, and a compressor generated by the compressor An injection nozzle that injects dry ice particles supplied from the dry ice particle supply device toward the film-shaped material to be removed and the joint portion of the base by the compressed air that has been generated, And a projecting member provided in a portion of the spray nozzle around the spray port for striking the joint portion.

According to the present invention, for example, the joint portion between the film material and the base is struck by the projecting member, and a slight scratch is made on the joint portion, and the dry ice is directed toward the joint portion having the scratch. By spraying the dry ice grains supplied from the grain supply device from the injection port formed at the tip of the injection nozzle and using the impact force of the projecting member and the impact force of the dry ice grains together, The attached film material can be easily removed.
Furthermore, since the dry ice particles sublime at room temperature after colliding with the joining portion, for example, compared with the case where the film-like material is removed by colliding with high-pressure water, the abrasive material does not remain, so that the film is more easily formed. The material can be removed.
Further, since the dry ice grains have a specific gravity of 1.56 and a relatively small mass, the collision force against the joint portion is relatively small, so that damage to the ground can be suppressed. Furthermore, since the projecting member strikes the joint between the film material and the base, the projecting member is not brought into direct contact with the base, so that damage to the base can be suppressed.
Moreover, since dry ice grains are weakly acidic, there is almost no influence on the human body, and the influence on the health of workers can be surely prevented as compared with the case of using a drug such as a strongly acidic remover.

  Here, the spray nozzle may be formed as a plate-like body in which a peripheral portion of the spray port is formed in a rectangular cross section, and the protruding member protrudes from one side portion of the peripheral portion in a rectangular cross section. According to such a configuration, for example, the plate-like body provided on one side of the peripheral portion having a rectangular cross section is applied to the joint portion along the surface of the base, so that the joint portion is joined by the protruding member of the plate-like body. Since the dry ice particles can be jetted while hitting, the removal work can be made more efficient.

In such a film material removing apparatus, it is preferable that the protruding member of the plate-like body is formed so as to become thinner toward the tip.
According to such a structure, a joining part can be easily struck with the protrusion member in which the front end side was formed thinly, and the efficiency of a film-like material removal operation | work can be aimed at.

Here, it is possible to adopt a configuration in which the protruding member is integrally formed in a peripheral portion of the injection nozzle in the injection nozzle.
According to such a configuration, since the protruding member is integrally formed in advance with the injection nozzle, it is not necessary to bother to attach the protruding member to the injection nozzle before using the film-like material removing device. It is possible to reduce the time and effort required to remove the material.

Moreover, the said film-form material removal apparatus WHEREIN: You may employ | adopt the structure by which the said protrusion member is detachably attached to the surrounding part of the said injection nozzle in the said injection nozzle.
In such a configuration, since the protruding member is detachable with respect to the injection nozzle, more appropriate protruding members can be selected according to the characteristics of the film material by preparing multiple types of protruding members with different shapes and dimensions. Therefore, the film-like material removing operation can be performed efficiently.

According to the film-like material removing method and the film-like material removing apparatus of the present invention, there is an effect that a film-like material such as a coating film can be easily removed from the ground without adversely affecting an operator or the ground.

Hereinafter, a film material removing apparatus according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram schematically showing a film material removing apparatus according to the present embodiment.
As shown in FIG. 1, the film-like material removing apparatus 1 is an apparatus for removing an elastic coating film B having a thickness of, for example, about 1 mm as a film-like material attached to, for example, a concrete base A such as a wall or a floor. It is. As shown in FIG. 1, the film material removing apparatus 1 includes a liquefied carbon dioxide tank 10 that stores liquefied carbon dioxide gas, a dry ice production device (pelletizer) 12 that produces dry ice grains 22 from the liquefied carbon dioxide gas, A hopper 14 that accumulates the dry ice particles 22, a compressor 16 that generates compressed air, and an injection gun 50 that injects the dry ice particles 22 toward the elastic coating film B and the joint C of the base A. Yes.

The liquefied carbon dioxide tank 10 appropriately supplies the stored liquefied carbon dioxide gas to the dry ice production apparatus 12 via the liquefied carbon dioxide supply system 11.
The dry ice production device 12 produces dry ice particles 22 using the liquefied carbon dioxide gas supplied from the liquefied carbon dioxide tank 10. The dry ice grains 22 produced here have, for example, a specific gravity of about 1.56, a diameter of about 3 mm, and a size of about 10 mm in length, for example, dry ice formed into a predetermined shape such as a cylindrical shape. The produced dry ice grains 22 are fed to the hopper 14 through the dry ice grain feed system 13 and accumulated there.

  The dry ice particles 22 accumulated in the hopper 14 are sequentially supplied to the spray gun 50 through the dry ice particle supply system 15. A compressed air supply system 17 that supplies compressed air generated by the compressor 16 is connected to the dry ice grain supply system 15. When the compressed air supplied from the compressed air supply system 17 is introduced into the dry ice particle supply system 15, the dry ice particles 22 of the hopper 14 are fed toward the spray gun 50. For the dry ice grain supply system 15, a flexible tube, hose, or the like that can easily draw the spray gun 50 is used. The dry ice particles 22 supplied to the spray gun 50 are sprayed at a high speed toward the joint portion C from a later-described spray nozzle of the spray gun 50. The sprayed dry ice particles 22 collide with the joint portion C, and the elastic coating film B is removed from the base A by the impact at the time of the collision. The dry ice grain supply system 13, the hopper 14, and the dry ice grain supply system 15 correspond to the dry ice grain supply apparatus described in the claims.

  As shown in FIG. 1, the injection gun 50 includes an injection gun main body 51 that opens a nozzle (not shown) in FIG. 1 to inject dry ice particles 22 together with compressed air by pulling a trigger (not shown). An injection nozzle 52 that is detachably attached to the distal end portion of the gun body 51, and is integrally formed at the distal end portion of the injection nozzle 52. When the elastic coating film B is removed, it protrudes toward the joining portion C, and the joining portion C And a claw member 53 which is a protruding member for striking.

Here, FIG. 2 is a perspective view showing an injection nozzle and a projecting member attached to a tip portion of an injection gun main body constituting the membrane-like material removing device. As shown in FIG. 2, the spray nozzle 52 includes a connection section 54 having a circular cross section that is detachably connected to the spray gun body 51, and a nozzle body 55 that extends vertically from a substantially central portion of the front surface 54 </ b> A of the connection section 54. It has.
The nozzle body 55 is formed in a scoop shape in a plan view, the cross-section of the base end 55A is circular, and the cross-section of the tip 55B is a rectangular shape extending in the lateral direction, and becomes thinner toward the tip 55B. . A nozzle 55 </ b> X extending in the lateral direction is formed at a tip 55 </ b> B having a rectangular cross section of the nozzle body 55. As a result, the dry ice particles 22 (FIG. 1) supplied from the spray gun body 51 side are sprayed with a spread in the lateral direction.

  The claw member 53 is formed as a plate-like body that protrudes toward the joining portion C when the elastic coating film B is removed. The plate-like claw member 53 is formed in a wedge shape having a pointed tip 53A. The claw member 53 is integrally formed on one side (lower side in FIG. 2) 55B1 of the peripheral portion of the nozzle 55X of the tip 55B of the nozzle body 55 formed in a rectangular cross section.

The elastic coating film B is removed by the following procedure using the film-like material removing apparatus 1 described above.
First, the dry ice particles 22 manufactured by the dry ice manufacturing apparatus 12 are supplied to the hopper 14 through the dry ice particle supply system 13. Thereby, when the trigger of the spray gun main body 51 is pulled, the dry ice particles 22 accumulated in the hopper 14 are quickly transferred to the spray gun 50 through the dry ice particle supply system 15 by the compressed air supplied through the compressed air supply system 17. Supplyed and the dry ice grains 22 are jetted together with the compressed air.
In this state, the plate-like claw member 53 formed integrally with the injection nozzle 52 is applied to the joint portion C, and the joint portion C is hit with the tip 53A of the claw member 53 to damage the jet portion. The trigger of the gun body 51 is pulled, and the dry ice particles 22 are sprayed from the spray port 55X of the spray nozzle 52 toward the damaged portion formed in the joint portion C. As a result, the solid dry ice particles 22 collide with the scratched portion of the joint portion C, the joint portion C is peeled off, and the elastic coating film B is removed from the base A.

The film material removing apparatus 1 of the present embodiment has the following effects.
(1) The joint portion C of the elastic coating film B and the base A is struck by the claw member 53, and the joint portion C is scratched and supplied from the hopper 14 toward the joint portion C having the scratch. The dry ice grains 22 are ejected from the ejection port 55X formed at the tip 55B of the nozzle body 55 constituting the ejection nozzle 52, and the impact force of the claw member 53 and the collision force of the dry ice grains 22 are used in combination. By doing so, the elastic coating film B adhering to the base A can be easily removed.

  (2) Since the dry ice particles 22 sublime at room temperature after colliding with the joint portion C, for example, compared with the case where the elastic coating film B is removed by colliding with high-pressure water, the abrasive does not remain. The elastic coating film B can be removed more easily.

  (3) Since the dry ice particles 22 have a specific gravity of 1.56 and a relatively small mass, the impact force on the joint portion C is relatively small, and therefore, damage to the base A can be suppressed. Furthermore, since the nail | claw member 53 strikes the junction part C of the elastic coating film B and the foundation | substrate A, since the nail | claw member 53 is not contact | abutted to the foundation | substrate A directly, damage to the foundation | substrate A can be suppressed.

  (4) Since the dry ice grains 22 are weakly acidic, there is almost no influence on the human body, and the influence on the health of the worker can be surely prevented as compared with the case where a drug such as a strongly acidic remover is used.

  (5) At the tip 55B of the nozzle body 55, a plate-like claw member 53 is formed on one side 55B1 which is the peripheral portion of the injection port 55X, and this plate-like body is placed along the surface of the base A to form a joint portion C. By applying, the dry ice particles 22 can be sprayed while striking the joining portion C with the claw member 53 of the plate-like body, so that the efficiency of the removing operation can be further improved.

  (6) Since the plate-like claw member 53 is formed in a wedge shape that becomes thinner toward the protruding tip 53A, the joining portion C can be easily hit by the tip 53A of the claw member 53, and the elastic coating film B The removal work can be made more efficient.

  (7) Since the injection nozzle 52 and the claw member 53 are integrally formed, it is not necessary to bother to attach the claw member 53 to the injection nozzle 52 before using the film material removing apparatus 1. Can reduce the time and effort required to remove the water.

In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention. Further, the present invention is not limited to the dimensions, shape, material, quantity, and the like of the embodiment.
For example, in the above-described embodiment, the claw member 53 is formed integrally with the injection nozzle 52. However, the configuration is not limited thereto, and the claw member 53 may be configured to be detachable from the injection nozzle 52. In this case, since the claw member 53 is detachable with respect to the injection nozzle 52, a more appropriate nail can be obtained depending on the characteristics of the elastic coating film B by preparing a plurality of types of projecting members having different shapes and dimensions. There is an advantage that the member 53 can be selected and the efficiency of removing the elastic coating film B can be improved.
In addition, the spray nozzle 52 has a scooping shape in plan view, and the tip thereof is formed in a rectangular cross section. However, the present invention is not limited to this, and for example, the whole may be formed in a circular circular cross section. The dimensions are not particularly limited. In short, the dry ice particles 22 may be ejected from the ejection port. In addition, the cross-sectional shape of the injection port 55X is not particularly limited.

  In the above-described embodiment, the claw member 53 is formed on one side 55B1 of the injection nozzle 52. Moreover, although the nail | claw member 53 was formed as a plate-shaped body, it is not restricted to this, For example, pin shape and other shapes are employable. In addition, the plate-like claw member 53 is formed in a wedge shape that becomes thinner toward the tip 53A, but is not limited thereto.

Further, the shape of the dry ice grains 22 is not necessarily formed into a cylindrical shape, and may be formed into any shape.
Moreover, in the said embodiment, although the membranous material removal apparatus 1 was provided with the liquefied carbon dioxide tank 10 and the dry ice manufacturing apparatus 12, it is not restricted to this, For example, the dry ice grain 22 in another place, such as a factory, is comprised. May be manufactured and transported to the site for use.
Further, the film material to be removed from the base A is not limited to the elastic coating film B, and for example, a waterproof sheet or other film material may be employed.

It is a figure which shows typically the film-form material removal apparatus which concerns on embodiment of this invention. It is a perspective view which shows the injection nozzle and protrusion member which are attached to the front-end | tip part of the injection gun main body which comprises the said film-form material removal apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Membrane material removal apparatus 10 Liquefied carbon dioxide tank 11 Liquefied carbon dioxide supply system 12 Dry ice production apparatus 13 Dry ice grain supply system (dry ice grain supply apparatus)
14 Hopper (Dry ice grain supply device)
15 Dry ice grain supply system (Dry ice grain supply system)
16 Compressor 17 Compressed air supply system 22 Dry ice particles 50 Injection gun 51 Injection gun body 52 Injection nozzle 53 Claw member (protruding member)
53A Tip 54 Connection 54A Front 55 Nozzle Body 55A Base 55B Tip 55B1 One Side (One Side)
55X Injection port A Base B Elastic coating (film material)
C Joint part

Claims (6)

A film-like material removal method for removing a film-like material attached to a base,
A removal target a filmy material the connecting portion between the base while hitting collision by the projecting member provided on the peripheral portion of the injection port of the injection nozzle, dry from the injection port toward the joint portion to the Da突A film-like material removing method comprising spraying ice grains and removing the film-like material from the base . A film-like material removing device for removing a film-like material attached to a base,
A dry ice grain supply device for supplying dry ice grains;
A compressor that generates compressed air;
Injection that uses the compressed air generated by the compressor to inject dry ice particles supplied from the dry ice particle supply device toward the film-shaped material to be removed and the joint portion of the base from the injection port of the tip portion. A nozzle,
A film-like material removing apparatus, comprising: a projecting member that is provided in a peripheral portion of the spray nozzle in the spray nozzle and hits the joint portion. In the membrane-like material removal apparatus according to claim 2,
The injection nozzle has a peripheral portion of the injection port formed in a rectangular cross section,
The protruding member is formed as a plate-like body protruding from one side of a peripheral portion having a rectangular cross section. In the membranous material removing apparatus according to claim 3,
The protruding member of the plate-like body is formed so as to become thinner toward the tip end. In the membranous material removing apparatus according to any one of claims 2 to 4,
The protruding member is integrally formed on a peripheral portion of the spray nozzle in the spray nozzle. In the membranous material removing apparatus according to any one of claims 2 to 4,
The protruding member is detachably attached to a peripheral portion of the spray nozzle in the spray nozzle.

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