JP2009052236A - Wall surface treatment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wall surface treatment device which can reduce the quantity of wastewater when a deposit is removed from an inner wall surface of a pipe body, and which can reduce costs associated with wastewater treatment. <P>SOLUTION: The wall surface treatment device 1 removes asbestos A (deposit) from the inner wall surface E1 by emitting a jet of high-pressure water to the inner wall surface E1 of a chimney E (pipe body). The wall surface treatment device 1 comprises a main body portion 10 with a rotating shaft 12, and a nozzle 21 for a wall surface, which is attached to the rotating shaft 12 and which laterally emits the jet of high-pressure water supplied from the main body portion 10, while rotating on the axis line of the rotating shaft 12 along with the rotation of the rotating shaft 12. The water pressure of the high-pressure water jetted from the nozzle 21 is set within 50-250 MPa, and the quantity of the high-pressure water is set within 5-25 L/min. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wall surface processing apparatus for removing deposits from an inner wall surface of a tubular body such as a chimney.

  As an apparatus for removing asbestos lined on the inner wall surface of the chimney, a main body having a rotation shaft and a rotation of the rotation shaft are supplied from the main body while rotating around the rotation shaft. There is a wall surface processing apparatus provided with a wall surface nozzle that injects high-pressure water toward the side.

  When removing the asbestos in the chimney with this wall treatment device, the wall treatment device is inserted into the top of the chimney and the wall nozzle is rotated around the vertical axis in the chimney while moving from the wall nozzle to the inner wall. Asbestos is peeled from the inner wall surface by spraying high-pressure water. And the asbestos of the whole chimney can be removed by moving a wall surface processing apparatus from the top part to the bottom part of a chimney, spraying high pressure water on an inner wall surface (for example, refer patent document 1).

JP 2003-083533 A (paragraph 0006, FIG. 1)

In the above-described conventional wall surface treatment apparatus, the greater the amount of water ejected from the wall surface nozzle, the higher the treatment capacity for peeling asbestos from the wall surface. The amount of water is set to 60 to 80 L / min. When the wall treatment apparatus set in this way is used for 120 minutes, water of 7.2 to 9.6 tons is used.
Here, the wastewater generated when the asbestos is removed by the high-pressure water contains asbestos dust, so that the wastewater treatment is complicated. In the conventional wall treatment equipment, the amount of water sprayed from the wall nozzle is large, and a large amount of water is used to remove asbestos. There is a problem of becoming high.

  Therefore, in the present invention, the wall surface treatment that solves the above-described problems, can reduce the amount of waste water generated when removing deposits from the inner wall surface of the tubular body, and can reduce costs related to waste water treatment. It is an object to provide an apparatus.

  In order to solve the above-mentioned problems, the present invention is a wall surface processing apparatus for ejecting high pressure water onto an inner wall surface of a tubular body to remove deposits from the inner wall surface, the main body having a rotating shaft, and a rotation A wall surface nozzle that is attached to a shaft and injects the high-pressure water supplied from the main body toward the side while rotating about the axis of the rotation shaft as the rotation shaft rotates. The high pressure water jetted from is characterized by a water pressure of 50 to 250 MPa and a water amount of 5 to 25 L / min.

In this configuration, by increasing the water pressure and reducing the amount of water compared to conventional wall treatment equipment, the amount of waste water can be significantly reduced while ensuring removal performance equivalent to that of conventional wall treatment equipment. it can. Therefore, it is possible to reduce the cost related to the treatment of the wastewater containing the removed deposits.
Specifically, when a conventional wall surface treatment apparatus in which the amount of water is set to 60 to 80 L / min is used for 120 minutes, 7.2 to 9.6 ton of water is used. When the wall treatment apparatus is used for 120 minutes, 0.6 to 3.0 tons of water is used, and the amount of water used, that is, the amount of wastewater is about 1 / compared to that of the conventional wall treatment apparatus. It is reduced to 10/30.

  In the wall surface processing apparatus described above, the rotation shaft can be rotated by using the compressed air supplied to the main body as a drive source.

In this configuration, the wall surface nozzle attached to the rotation shaft is rotated by the compressed air, and the wall surface nozzle is rotated using the spray force of water sprayed from the wall surface nozzle in the rotation direction. The amount of water used can be reduced as compared with the above configuration.
Moreover, since it is not necessary to incline the injection direction of the wall surface nozzle in the rotation direction, high-pressure water can be sprayed perpendicularly to the circumferential direction of the inner wall surface of the tube, and the high-pressure water is effectively applied to the inner wall surface. Can be sprayed on. Therefore, the deposits can be efficiently peeled from the inner wall surface, and the amount of water used can be reduced.

  In the above-described wall surface processing apparatus, a guide member is provided around the main body, and the guide member is disposed closer to the base end side than the wall surface nozzle, and a distal end portion of the wall surface nozzle is an outer peripheral edge of the guide member. It can comprise so that it may be arrange | positioned inside.

In this configuration, since the guide member is disposed on the base end side with respect to the wall surface nozzle, the deposits peeled off from the inner wall surface of the tubular body by the high-pressure water sprayed from the wall surface nozzle are removed from the wall surface processing apparatus. It is possible to prevent scattering to the base end side.
Further, the tip of the wall nozzle is disposed inside the outer peripheral edge of the guide member, and the guide member prevents the wall nozzle from contacting the inner wall surface. Can be arranged in the vicinity of the inner wall surface. Therefore, since high-pressure water can be effectively sprayed from the vicinity of the inner wall surface to the inner wall surface, the deposits can be efficiently separated from the inner wall surface, and the amount of water used can be reduced.

  In the above-described wall surface processing apparatus, it is desirable that the injection direction of the wall surface nozzle is directed to an angle of 45 to 90 degrees with respect to the axial direction of the rotation shaft.

  In this configuration, by setting the spray direction of the wall surface nozzle between the above angles, high-pressure water is effectively blown against the inner wall surface, so that the deposits can be efficiently separated from the inner wall surface, The amount of water used can be reduced.

  In the wall surface processing apparatus described above, the wall surface processing apparatus includes a blocking prevention nozzle that sprays high-pressure water supplied from the main body toward the front, and the injection direction of the blocking prevention nozzle is the axial direction of the rotating shaft Can be configured to be oriented at an angle between 0 and 30 degrees.

  In this configuration, even if the deposits removed from the inner wall surface of the tube body are accumulated in the tube body at the end of the wall surface processing apparatus, the deposits are removed by the high-pressure water sprayed from the blocking prevention nozzle. Therefore, blockage in the tube can be prevented.

  According to the wall surface treatment apparatus of the present invention, the amount of waste water can be greatly reduced while ensuring the removal performance equivalent to that of the conventional wall surface treatment apparatus, so the cost associated with the treatment of waste water containing removed deposits. Can be reduced.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
This embodiment demonstrates as an example the case where the asbestos lined to the inner wall face of the chimney is removed.

[Overall configuration of wall treatment equipment]
As shown in FIG. 1, the wall surface processing apparatus 1 of the present embodiment injects high pressure water onto the inner wall surface E1 of the chimney E, which is a tubular body, so that the asbestos E2 that is the lining on the inner wall surface E1 is removed. To be removed.
The upper end of the chimney E communicates with the inside of the sealed working chamber 50, and three suspension pulleys 51, 52, 53 are attached to the ceiling of the working chamber 50. In the working chamber 50, a hoisting device 55 around which a suspension wire 54 is wound is provided.
The bottom of the chimney E communicates with the boiler room B1 provided on the first floor of the building B, and flows into the boiler room B1 from the chimney E through the dust removing device B2 provided in the boiler room B1. Air is exhausted to the outside.

The wall surface processing apparatus 1 is configured to be suspended inside the chimney E by a suspension wire 54. Specifically, the suspension wire 54 wound around the hoisting device 55 is passed over the movable pulley 56 supporting the wall surface processing device 1 via the suspension pulley 51 attached to the ceiling of the work chamber 50. The tip of the suspension wire 54 is fixed to the ceiling of the work chamber 50.
When the suspension wire 54 is unwound from the hoisting device 55, the wall surface processing device 1 is lowered in the chimney E. When the hoisting wire 54 is wound up by the hoisting device 55, the wall surface processing device 1 is removed from the chimney E. Rise within.

  As shown in FIG. 2, the wall surface processing apparatus 1 includes a main body portion 10, a nozzle support portion 20 attached to the lower end portion of the main body portion 10, a wall surface nozzle 21 attached to the nozzle support portion 20, and a blockage. A prevention nozzle 22 and a guide member 30 provided around the main body 10 are provided.

(Configuration of main unit)
As shown in FIG. 5, the main body 10 is attached to a base body 11 having a through hole 11 a formed in the vertical direction, a rotating shaft 12 inserted into the through hole 11 a of the base body 11, and an upper end surface of the base body 11. The air motor 13 is provided.

The base body 11 is a substantially rectangular parallelepiped member, and a flow path 11c of high-pressure water is formed therein. One end of the channel 11 c is open to the upper end surface of the base 11.
Further, a connecting pipe 14 whose axial direction is arranged in the vertical direction is attached to the upper end surface of the base body 11, and the lower end port of the connecting pipe 14 communicates with the flow path 11c.
As shown in FIG. 1, a water supply hose 61 extending from the compressor 60 is connected to the upper end port of the connecting pipe 14. Then, high pressure water is supplied from the compressor 60 through the water supply hose 61 to the connecting pipe 14. The water supply hose 61 is stretched over a suspension pulley 52 attached to the ceiling of the work chamber 50, and is sequentially drawn out when the wall surface processing apparatus 1 is lowered.

  As shown in FIG. 5, the rotary shaft 12 is arranged so that the axial direction is vertical, that is, the traveling direction of the wall surface processing apparatus 1 (see FIG. 1), and the lower end protrudes from the lower surface of the base 11. In the state, it is inserted into the through hole 11a. The rotary shaft 12 is supported by a plurality of bearings 11b... Arranged in the through hole 11a, so that the rotary shaft 12 can rotate about the axis in the through hole 11a.

A flow path 12 a is formed on the central axis of the rotating shaft 12. This flow path 12a opens to the outer peripheral surface of the rotating shaft 12 at the upper part of the rotating shaft 12, and through a swivel mechanism 15 formed between the outer peripheral surface of the rotating shaft 12 and the inner peripheral surface of the through hole 11a. The base 11 communicates with the flow path 11c.
Further, the flow path 12a is branched in four directions horizontally at the lower part of the rotary shaft 12, and the four branch paths 12b (see FIG. 6) branched from the flow path 12a are provided on the rotary shaft 12. Open to the outer peripheral surface.

The air motor 13 is an existing motor in which an output shaft 13a protrudes from a lower end portion and rotates the output shaft 13a using compressed air as a drive source. In addition, in this embodiment, since the well-known air motor is used, the detailed description is abbreviate | omitted.
As shown in FIG. 1, an air hose 62 extending from a compressor 60 disposed outside the chimney E is connected to the upper end of the air motor 13. Then, compressed air is supplied from the compressor 60 through the air hose 62 to the air motor 13.
Further, the air hose 62 is stretched over a suspension pulley 53 attached to the ceiling of the work chamber 50, and is sequentially drawn out when the wall surface processing apparatus 1 is lowered.

  As shown in FIG. 5, the output shaft 13a of the air motor 13 is inserted from the upper end portion of the through hole 11a of the base 11, and is connected to the upper end portion of the rotating shaft 12 in the through hole 11a. Therefore, by rotating the output shaft 13a by driving the air motor 13, the rotating shaft 12 rotates around the axis (around the vertical axis).

  The nozzle support portion 20 is a cylindrical member that is externally fitted to the lower end portion of the rotary shaft 12, and communicates with each branch passage 12 b branched from the flow path 12 a of the rotary shaft 12. Four flow paths 20a (see FIG. 6) are formed.

  As shown in FIG. 2, the nozzle support portion 20 supports a pair of wall surface nozzles 21, 21 arranged with the center portion of the nozzle support portion 20 interposed therebetween, and on the outer peripheral surface of the nozzle support portion 20, The base ends of the two wall nozzles 21 and 21 are attached. Further, as shown in FIG. 4, the nozzle support portion 20 supports a pair of blocking prevention nozzles 22, 22 arranged in a direction orthogonal to the two wall surface nozzles 21, 21 (see FIG. 2). The base end portions of the two blocking prevention nozzles 22 and 22 are attached to the outer peripheral surface of the nozzle support portion 20.

(Configuration of nozzle for wall surface and nozzle for blocking)
As shown in FIG. 5, the wall surface nozzle 21 is a cylindrical member for injecting high-pressure water supplied from the main body 10 toward the side of the nozzle support portion 20, and has a flow path on the central axis. 21a penetrates. The opening on the proximal end side of the flow channel 21 a communicates with the flow channel 20 a of the nozzle support portion 20, and the opening on the distal end side of the flow channel 21 a forms an injection port 21 b on the distal end surface of the wall surface nozzle 21.
The axial direction of the wall surface nozzle 21 is set to intersect with the axial direction of the rotary shaft 12 at an angle of 80 degrees downward. Therefore, the injection direction of the wall surface nozzle 21 is directed obliquely downward at an angle of 80 degrees with respect to the axial direction of the rotary shaft 12.

The blocking prevention nozzle 22 is a cylindrical member for injecting the high-pressure water supplied from the main body portion 10 downward, and the base end portion is the outer peripheral surface of the nozzle support portion 20 as shown in FIG. And a vertical portion 22d extending in the vertical direction downward from the tip of the horizontal portion 22c.
A flow path 22a passes through the central axis of the horizontal portion 22c and the vertical portion 22d. The opening on the proximal end side of the flow path 22a communicates with the flow path 20a of the nozzle support portion 20, and the opening on the distal end side of the flow path 22a forms an injection port 22b on the lower surface of the vertical portion 22d.
The axial direction of the vertical portion 22d of the blocking prevention nozzle 22 is set to be parallel to the axial direction of the rotary shaft 12 (to be 0 degree). Therefore, the ejection direction of the blocking prevention nozzle 22 is a direction parallel to the axial direction of the rotary shaft 12, that is, a downward direction in the vertical direction.

Here, the flow of high-pressure water in the wall surface processing apparatus 1 of the present embodiment will be described.
The high-pressure water supplied from the water supply hose 61 shown in FIG. 2 to the connecting pipe 14 flows into the flow path 11c of the base 11 shown in FIG. It flows into the flow path 12a of the rotating shaft 12 through the swivel mechanism 15 configured as described above. The high-pressure water that has flowed into the flow path 12a of the rotary shaft 12 flows into the branch paths 12b... At the lower part of the rotary shaft 12 and passes through the flow paths 20a of the nozzle support 20 to the nozzles 21 and 21 for the wall surfaces. It flows into the flow paths 21a, 21a and the flow paths 22a, 22a (see FIG. 6) of the respective blocking prevention nozzles 22, 22. In this way, high-pressure water is ejected from the ejection port 21 b of the wall surface nozzle 21 and the ejection port 22 b of the blocking prevention nozzle 22.

  In this embodiment, the high pressure water sprayed from the wall surface nozzle 21 and the blocking prevention nozzle 22 is supplied from the compressor 60 shown in FIG. 1 so that the water pressure is 50 to 250 MPa and the water amount is 5 to 25 L / min. The water pressure and amount of high-pressure water are set.

(Configuration of guide member)
As shown in FIGS. 2 and 3, the guide member 30 is a member that is provided around the base body 11 of the main body 10, and has four attachment parts 31 that are respectively fixed to the four side surfaces of the base body 11. And a plate-like annular portion 32 disposed around the base body 11 in a state supported by the attachment portions 31.

  The attachment portion 31 is a bracket whose side surface is fixed to the side surface of the base 11 and whose lower surface is fixed to the upper surface of the annular portion 32. Of the four attachment portions 31... Fixed to the side surface of the base body 11, suspension brackets 31 a and 31 a are respectively provided on the upper surfaces of the attachment portions 31 and 31 arranged on the left and right in FIG. The lower ends of the two support wires 56a and 56a suspended from the movable pulley 56 shown in FIG. 2 are attached to the suspension fittings 31a and 31a, respectively.

As shown in FIG. 3, the annular portion 32 is a plate-like member having a circular outer peripheral shape, and a circular opening 32a is formed at the center thereof. By inserting the base body 11 into the opening 32 a, the annular portion 32 is disposed around the base body 11.
As shown in FIG. 2, in the state where the guide member 30 is provided around the main body 10, the wall surface nozzle 21 and the blocking prevention nozzle 22 are disposed below the annular portion 32 of the guide member 30. Moreover, the front-end | tip part of the nozzle 21 for wall surfaces and the nozzle 22 for obstruction | occlusion prevention is arrange | positioned inside the outer periphery of the cyclic | annular part 32 (refer FIG. 4).
Furthermore, in this embodiment, the annular diameter-expanding member 33 is attached by a bolt along the outer peripheral edge of the annular portion 32. The peripheral edge is disposed in the vicinity of the inner wall surface E1 of the chimney E.

[Asbestos removal work]
Next, the procedure of the operation | work which removes the asbestos in the chimney E using the wall surface processing apparatus 1 of this embodiment is demonstrated.
First, as shown in FIG. 1, the wall surface processing apparatus 1 is suspended by the suspension wire 54, and the wall surface processing apparatus 1 is disposed at the top of the chimney E.
Compressed air is supplied from the compressor 60 to the air motor 13 through the air hose 62, and the output shaft 13a of the air motor 13 shown in FIG. Thereby, the rotating shaft 12 connected to the output shaft 13a rotates around the axis. As the rotary shaft 12 rotates, the nozzle support portion 20 attached to the lower end portion of the rotary shaft 12 rotates around the axis of the rotary shaft 12, so that the wall surface nozzle 21 and the blocking prevention nozzle 22 are connected to the chimney E ( 2)) around the axis of rotation 12 (around the vertical axis).

Further, after rotating the wall surface nozzle 21 and the blocking prevention nozzle 22 or before rotating, the high pressure water is supplied from the compressor 60 shown in FIG.
The high-pressure water supplied to the flow path 11c of the base body 11 shown in FIG. 5 is supplied to the flow path 21a of the wall surface nozzle 21 through the flow path 12a of the rotating shaft 12 and the flow path 20a of the nozzle support portion 20, and the injection port It injects toward the side from 21b. At this time, high-pressure water is ejected from the wall surface nozzle 21 at an angle of 10 degrees obliquely downward in the rotational radius direction. 2 is blown onto the inner wall surface of the chimney E shown in FIG. 2, the asbestos E2 lining the inner wall surface peels off and falls to the bottom of the chimney E.

  As shown in FIG. 3, the gap between the outer peripheral surface of the main body 10 and the inner wall surface E <b> 1 of the chimney E is narrowed by the annular portion 32 of the guide member 30 provided around the outer peripheral surface of the main body 10. Therefore, it is possible to prevent the asbestos E2 (see FIG. 2) peeled off from the inner wall surface E1 from scattering on the upper side of the wall surface processing apparatus 1.

  Further, the high-pressure water supplied to the flow path 11c of the base body 11 shown in FIG. 6 is also supplied to the flow path 22a of the blocking prevention nozzle 22 through the flow path 12a of the rotating shaft 12 and the flow path 20a of the nozzle support portion 20. Injected downward from the injection port 22b. At this time, the high-pressure water is jetted downward from the blocking prevention nozzle 22 in the vertical direction. And when the asbestos E2 (refer FIG. 2) removed from the inner wall surface E1 of the chimney E accumulates in the chimney E below the wall surface processing apparatus 1, the high pressure water sprayed from the blocking prevention nozzle 22 Deposits are removed.

As shown in FIG. 1, while blowing high-pressure water onto the inner wall surface E <b> 1, the suspension wire 54 is fed out from the hoisting device 55, and the wall surface processing device 1 is moved from the top to the bottom of the chimney E, thereby Remove asbestos E2.
In addition, since the front-end | tip part of the nozzle 21 for wall surfaces and the nozzle 22 for blocking | closure prevention is arrange | positioned inside the outer periphery of the guide member 30, even if it is a case where the wall surface processing apparatus 1 shakes within the chimney E, The wall surface nozzle 21 and the blocking prevention nozzle 22 do not contact the inner wall surface E1 of the chimney E.

[Effects of wall treatment equipment]
In the wall surface processing apparatus 1 according to the present embodiment shown in FIG. 1, the water pressure is increased and the amount of water is reduced as compared with the conventional wall surface processing apparatus, while ensuring removal performance equivalent to that of the conventional wall surface processing apparatus. The amount of waste water can be greatly reduced. Accordingly, it is possible to reduce the cost related to the treatment of the wastewater containing the removed asbestos E2.
Specifically, when a conventional wall surface treatment apparatus in which the amount of water is set to 60 to 80 L / min is used for 120 minutes, 7.2 to 9.6 ton of water is used. When the wall treatment apparatus is used for 120 minutes, 0.6 to 3.0 tons of water is used, and the amount of water used, that is, the amount of waste water is 1/10 compared to the conventional wall treatment apparatus. Reduced to ~ 1/30.

  Moreover, in the wall surface processing apparatus 1 of this embodiment, the wall surface nozzle 21 is rotated by compressed air, and the wall surface nozzle 21 is utilized by using the jetting force of water sprayed from the wall surface nozzle 21 in the rotation direction. The amount of water used can be reduced as compared with the conventional configuration in which the is rotated.

  Moreover, since it is not necessary to incline the injection direction of the wall surface nozzle 21 in the rotation direction, high-pressure water can be blown perpendicularly to the circumferential direction of the inner wall surface E1 of the chimney E, and the high-pressure water is applied to the inner wall surface E1. Can be effectively sprayed. Therefore, the asbestos E2 can be efficiently peeled from the inner wall surface E1, and the amount of water used can be reduced.

  Further, as shown in FIG. 2, the guide member 30 is disposed on the base end side with respect to the wall surface nozzle 21, so that the asbestos peeled from the inner wall surface E <b> 1 by the high-pressure water sprayed from the wall surface nozzle 21. E2 can be prevented from scattering to the base end side of the wall surface processing apparatus 1.

  As shown in FIG. 2, the tip of the wall surface nozzle 21 is disposed on the inner side of the outer peripheral edge of the guide member 30, and the guide member 30 makes contact between the wall surface nozzle 21 and the inner wall surface E <b> 1. Therefore, the tip of the wall surface nozzle 21 can be disposed in the vicinity of the inner wall surface E1. Therefore, since high-pressure water can be effectively sprayed from the vicinity of the inner wall surface E1 to the inner wall surface E1, the asbestos E2 can be efficiently separated from the inner wall surface E1, and the amount of water used can be reduced. it can.

  Further, as shown in FIG. 5, the injection direction of the wall surface nozzle 21 is directed downward at an angle of 80 degrees with respect to the axial direction of the rotary shaft 12, and high-pressure water is effective against the inner wall surface E1. Since the asbestos E2 can be efficiently peeled from the inner wall surface E1, the amount of water used can be reduced.

  Further, even when the asbestos E2 removed from the inner wall surface E1 of the chimney E accumulates in the chimney E below the wall surface processing apparatus 1, the asbestos E2 is jetted downward from the blocking prevention nozzle 22 in the vertical direction. Since the deposit is removed by the high-pressure water, blockage in the chimney E can be prevented.

  Further, in the guide member 30 shown in FIG. 3, an annular diameter-expanding member 33 is attached along the outer peripheral edge of the annular portion 32, and the diameter-expanding members having different outer diameters are annularly arranged in accordance with the inner diameter of the chimney E. By attaching to the part 32, it is possible to deal with various shapes of chimneys and tubes.

  Further, when the wall treatment apparatus 1 (see FIG. 1) is moved in the chimney E, the guide member 30 does not slide on the inner wall E1 of the chimney E, and the outer peripheral edge of the guide member 30 and the chimney E A predetermined interval is formed between the wall surface E1. Therefore, even when the guide member 30 has irregularities formed on the inner wall surface E1 of the chimney E or when the opening shape of the chimney E is not circular, the wall surface processing apparatus 1 can be moved smoothly.

[Other Embodiments]
The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the spirit of the present invention. For example, in this embodiment, the injection direction of the wall surface nozzle 21 shown in FIG. 5 is set obliquely downward at an angle of 80 degrees with respect to the axial direction of the rotary shaft 12. Can be set to an angle between 45 and 90 degrees with respect to the axial direction of the rotary shaft 12. And if it is between above-mentioned angles, asbestos E2 can be efficiently peeled from the inner wall face E1.

  The injection direction of the blocking prevention nozzle 22 shown in FIG. 6 is set to be parallel to the axial direction of the rotary shaft 12 (0 degree), but the blocking direction of the blocking prevention nozzle 22 is The angle between 0 and 30 degrees with respect to the axial direction of the rotary shaft 12 can be set. And if it is between above-mentioned angles, the asbestos E2 deposited in the chimney E under the wall surface processing apparatus 1 can be removed reliably.

  Further, the wall processing apparatus 1 can be prevented from shaking in the chimney E by attaching a weight to the lower end portion of the rotating shaft 12 protruding downward from the lower surface of the base body 11 of the main body 10.

  Moreover, in this embodiment, as shown in FIG. 1, although the case where asbestos E2 was removed from the inner wall surface E1 of the chimney E extended in the perpendicular direction was demonstrated, the wall surface processing apparatus of this invention inclines diagonally. The present invention can also be applied to tubes arranged in a horizontal direction and tubes arranged in a horizontal direction. In this case, the axial direction of the rotating shaft is arranged in accordance with the axial direction of the tubular body, and the main body is pushed out from the proximal end side to the distal end side of the tubular body while jetting high-pressure water. It is possible to remove deposits adhering to the inner wall surface.

It is the whole block diagram which showed the removal operation | work of the asbestos in a chimney using the wall surface processing apparatus of this embodiment. It is the side view which showed the wall surface processing apparatus of this embodiment. It is the top view which showed the wall surface processing apparatus of this embodiment. It is the figure which showed the wall surface processing apparatus of this embodiment, and is A arrow line view of FIG. It is the sectional side view which showed the wall surface processing apparatus of this embodiment. It is the figure which showed the wall surface processing apparatus of this embodiment, and is sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall surface processing apparatus 10 Main-body part 11 Base | substrate 11c Flow path 12 Rotating shaft 12a Flow path 13 Air motor 13a Output shaft 14 Connecting pipe 15 Swivel mechanism 20 Nozzle support part 20a Flow path 21 Wall surface nozzle 21a Flow path 21b Injection port 22 Nozzle 22a Flow path 22b Injection port 30 Guide member 31 Mounting portion 32 Annular portion 33 Diameter expanding member 50 Work chamber 54 Suspension wire 55 Hoisting device 56 Movable pulley 56a Support wire 60 Compressor 61 Water supply hose 62 Air hose E Chimney (tube)
E1 Inner wall surface E2 Asbestos (attachment)

Claims (5)

A wall surface processing apparatus for spraying high-pressure water on the inner wall surface of a tubular body to remove deposits from the inner wall surface,
A main body having a rotation axis;
A wall surface nozzle that is attached to the rotating shaft and injects the high-pressure water supplied from the main body sideways while rotating about the axis of the rotating shaft as the rotating shaft rotates. Prepared,
The high-pressure water sprayed from the wall surface nozzle has a water pressure of 50 to 250 MPa and a water amount of 5 to 25 L / min.   The wall surface processing apparatus according to claim 1, wherein the rotation shaft is configured to rotate using compressed air supplied to the main body as a drive source. A guide member is provided around the main body,
The said guide member is arrange | positioned in the base end side rather than the said wall surface nozzle, and the front-end | tip part of the said wall surface nozzle is arrange | positioned inside the outer periphery of the said guide member. The wall surface processing apparatus according to claim 2.   4. The injection direction of the wall surface nozzle is directed to an angle between 45 and 90 degrees with respect to the axial direction of the rotation shaft. 5. Wall treatment equipment. The wall surface processing apparatus includes a nozzle for preventing clogging that injects high-pressure water supplied from the main body toward the front.
The injection direction of the blocking nozzle is directed to an angle between 0 to 30 degrees with respect to the axial direction of the rotating shaft. The wall surface processing apparatus as described.

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