JP2003236482A - Device for washing inner surface of cylindrical article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for washing the inner surface of a cylindrical article which can surely wash the inner surface of the cylindrical article by an external operation without requiring that a worker enters the inside of the cylindrical article. <P>SOLUTION: This device for washing the cylindrical article has a device body disposed in the inside of the cylindrical article and moving in the lengthwise direction thereof, a plurality of radial holding legs attached around the device body and always contacting with the inner surface of the cylindrical article to keep the device body at the center of the cylindrical article, a revolving body supported rotatably to a support cylinder of the device body, a plurality of radial nozzle support arms attached around the revolving body and always capable of contacting with the inner surface of the cylindrical article, and a plurality of high pressure water nozzles each fixed to a part of the nozzle support arm near the tip end in a state where the nozzle is disposed closely to the inner surface of the cylindrical article and inclined in the radial direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for cleaning the inner surface of a cylindrical object with high pressure water.

[0002]

BACKGROUND ART Recently, it is increasingly necessary to clean the inner surface of a large cylindrical object (building / apparatus) such as a large chimney or an incinerator kiln. In other words, the dioxin, mercury, cadmium, lead, 2nd fluorine-containing chromium, arsenic,
Since environmental pollutants such as selenium adhere and remain, it is becoming necessary to treat these environmental pollutants.

[0003]

By the way, during maintenance work of a large chimney or incinerator kiln or during dismantling work, an operator with a high-pressure washing nozzle must enter the inside of a cylindrical object for cleaning. However, the workers themselves must be protected from exposure to pollutants, and the high-pressure washing water splashes inside the relatively narrow cylindrical object, resulting in poor visibility and poor working conditions. Is also limited, and the construction period becomes longer.

The object of the present invention is, in view of the actual condition of the conventional cleaning operation of the inner surface of the tubular article as described above, that the operator does not need to enter the inside and the inner surface of the tubular article can be reliably cleaned by an external operation. The purpose is to obtain a cleaning device for the inner surface of a cylindrical object.

[0005]

In order to achieve this object, the present invention provides a device main body which is located inside a tubular object and is fed in the lengthwise direction thereof, and a device which is mounted around the device main body and has a tubular shape. A plurality of radial holding legs that constantly contact the inner surface of the object to keep the apparatus main body at the center of the cylindrical object, a revolving structure rotatably supported by a supporting cylinder of the apparatus main body, and the revolving structure A plurality of radial nozzle support arms that are attached to the periphery of the cylindrical object and are always in contact with the inner surface of the cylindrical object, and the tips of the nozzle support arms that are close to the inner surface of the cylindrical object and are inclined with respect to the radial direction. The present invention proposes a cleaning device for the inner surface of a cylindrical object, which is provided with a plurality of high-pressure water nozzles fixed to a portion close to it.

In the description of the preferred embodiments of the present invention described below, 1) the apparatus main body is provided with a high-pressure water pipe located at the center thereof and supplied with high-pressure washing water from the outside. A distribution pipe fixed to the center of the revolving structure is connected via a swivel joint, and high-pressure washing water is distributed and supplied from the distribution pipe to the high-pressure water nozzle, 2) the device main body A structure provided with a joint that can connect the traction means of the towing / driving device located outside the tubular object, 3) The towing / driving device located outside the tubular object at the tip of the distribution pipe. Described is a structure in which a joint to which the pulling means of 1 is connected is provided via a swivel joint.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention used for cleaning a large chimney E will be described below in detail with reference to the drawings. Figure 1
The washing | cleaning apparatus A of this invention suspended by the suspending wire W1 with respect to the suspension hook F of the crane boom B is shown, and the said washing | cleaning apparatus A suspended inside the large chimney E is a suspension hook. By moving F up and down, it is sent in the length direction of the large chimney E.

2 to 4 show the details of the cleaning device A. Four I bolts 11 to which a suspending wire W1 can be connected are attached to the upper surface of the device main body 10 which is held in the center of the large chimney E.
(First contact means) is provided. Further, as shown in FIG. 3, the base of four holding legs 21 extending radially toward the inner peripheral surface e of the large chimney E has a first hinge 22 on the outer periphery of the apparatus body 10 formed in a cylindrical shape. It is attached so that it can be pulled up and down. A first driven wheel 23, which is in rolling contact with the inner peripheral surface e, is supported at the tip of the holding leg 21 that is evenly arranged in the angular direction of the apparatus body 10.

A tip end portion of a first expander 32, which pivotally supports the base portion on the outer peripheral portion of the apparatus main body 10, is pin-jointed to the intermediate portion of each holding leg 21, and is given a habit of extending by a built-in spring. Each holding leg 21 tends to be rotated in one direction by the corresponding first hinge 22 by the first expander 32. Therefore, the apparatus main body 10 of the cleaning apparatus A is constantly in contact with the inner peripheral surface e of the large chimney E due to the expansion force of the holding legs 21 by each first expander 32 and the contact of the first driven wheel 23 with the inner peripheral surface e. Held in the center. Further, due to the structure of the holding leg 21 and the first expander 32, a structure that can automatically cope with a large chimney E having a different diameter, a stepped opening, or a tapered opening can be obtained.

The apparatus main body 10 described above has a support cylinder 11 connected to the lower part thereof, and the driven frame 31 of the revolving structure 30 is supported so that it can freely rotate about the support cylinder 12. That is, a plurality of radial driven wheels 33 attached to the inner peripheral surface e of the driven frame 31 are rollingly contacted with the cylindrical guide surface 12a of the support cylinder 12 that is manufactured in a substantially cylindrical shape, and face each other in the length direction of the large chimney E. A plurality of thrust driven wheels 3 supported on the inner end surface of the driven frame 31 are provided on the pair of thrust receiving surfaces 12b and 12c.
5, 36 are transferred to each other.

On the other hand, as shown in FIG. 4, the bases of the nozzle support arms 41 are respectively attached to the tips of the four radial fixing arms 38 fixed to the outer peripheral surface of the revolving structure 30 via the second hinges 39. The second driven wheel 43 pivotally supported and supported by the tip end portions of the nozzle support arms 41 faces the inner peripheral surface e of the large chimney E. Further, high-pressure water nozzles 51 capable of injecting high-pressure washing water, which will be described later, are fixed to portions of the respective nozzle support arms 41 near the tip end thereof, and the high-pressure water nozzles 51 tilted with respect to the radial direction of the large chimney E The high-pressure cleaning water is sprayed in the direction of the arrow toward the inner peripheral surface e of the large chimney E.

The outer peripheral portion of the revolving structure 30 and the intermediate portion of each nozzle supporting arm 41 are connected by a second expander 44 which has a habit of expanding by a built-in spring. Each nozzle support arm 41 is moved to the second
There is a tendency to rotate around the hinge 39. Therefore, in the revolving structure 30 of the cleaning device A, the expansion force of the nozzle support arm 41 by each second expander 44 and the second expansion force relative to the inner peripheral surface e.
Due to the contact of the driven wheel 43, the inner peripheral surface e of the large chimney E is constantly
It is held in the center of the stack, and at the same time, due to the structure of the nozzle support arm 41 and the second expander 44, a large chimney E with different caliber
A structure that can automatically cope with a stepped opening, a stepped opening, and a tapered opening can be obtained.

Returning to FIG. 2, a high-pressure water pipe 61 extending in the lengthwise direction of the large chimney E is fixed to the center of the apparatus body 10, and a high pressure water pipe 61 is connected to a joint elbow 52. High pressure washing water is supplied from a hose (not shown). Further, a first wire joint 71 (second joint means) used for cleaning the incinerator kiln is fixed to the upper end of the high-pressure water pipe 61, and a first wire joint 71 (second joint means) is used at the lower end of the high-pressure water pipe 61.
A distribution pipe 64 fixed to the revolving structure 30 is connected via a swivel joint 62.

A second wire joint 72 (second joint means) is connected to the lower end of the distribution pipe 64 via a second swivel joint 65, and the second wire joint 72 and the first joint 72 are used when cleaning the incinerator kiln. Towing wire W2 on the wire joint 71
(Towing means) can be connected. Further, a cross pipe joint 67 is fixed to an intermediate portion of the distribution pipe 64.
High pressure water pipe 61 via a high pressure hose 68 connected to
The high-pressure cleaning water introduced into the above is distributed to the above-mentioned high-pressure water nozzles 51.

Since the cleaning device A according to the illustrated embodiment has the above-described structure, when cleaning the inner surface of the large chimney E, as shown in FIG.
Suspension, and lowering the cleaning device A by an external operation,
It may be washed. In this case, since the first driven wheel 23 of the holding leg 21 always elastically contacts the inner peripheral surface e of the large chimney E, the device body 10 is not affected by the change in the diameter of the inner peripheral surface e or the step. It will be automatically located at the center of E.

When the cleaning device A is lowered, the position of the high-pressure water nozzle 51 from the inner peripheral surface e is always kept constant by the rolling contact of the second driven wheel 43 of the nozzle support arm 41, and each high-pressure water The inner peripheral surface e of the large chimney E is cleaned by the high-pressure cleaning water ejected from the nozzle 51. During this jet cleaning,
Since the ejection direction from these high-pressure water nozzles 51 is inclined, a rotational torque is generated in the revolving unit 30 by the reaction of the ejection from the high-pressure water nozzle 51, and the revolving unit 30 automatically rotates. The entire inner peripheral surface e is washed with the lowering of the.

The cleaning device A of the illustrated embodiment can also be used in a horizontal kiln used as an incineration kiln for incinerating combustible materials. In this case, a pulling wire W2 operated by an external winch or the like is connected to the first wire joint and the second wire joint, and the washing device A is connected by the pulling wire W2.
Will be sent along the length of the incineration kiln.

In the above-described embodiment, the case of the inner peripheral surface e having a circular cross section is illustrated and described, but as shown in FIGS. 3 and 4, the inner peripheral surface e1 having a polygonal cross section sufficiently functions. it can.

[0019]

As is apparent from the above description, according to the present invention, it is not necessary for an operator to enter the inside, and not only the inner surface of the cylindrical object can be reliably cleaned by an external operation, but also the cylindrical object can be cleaned. Even if there is a taper or a step on the inner surface, the entire inner surface can be cleaned without obstacles. Further, since the cleaning device of the present invention rotates the revolving structure by utilizing the reaction when the high-pressure cleaning water is jetted, it does not require any special power for rotating the high-pressure water nozzle, and has a wide range of cylinders with different calibers. There is an effect that can be applied to the object.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the use of the cleaning device according to the present invention when cleaning the inner surface of a chimney.

FIG. 2 is an overall longitudinal sectional view of the cleaning device.

FIG. 3 is a top view of the cleaning device.

FIG. 4 is a bottom view of the cleaning device.

[Explanation of symbols]

A cleaning device E large chimney e Inner surface F hanging hook 10 Device body 12 Support tube 21 Holding leg 30 revolving structure 31 Driven frame 32 First expander 41 nozzle support arm 44 Second expander 51 high pressure water nozzle 61 high pressure water pipe 62 1st swivel joint 64-minute piping 65 Second swivel joint 67 Cross pipe joint 68 high pressure hose

Claims (4)

[Claims] 1. An apparatus main body that is positioned inside a tubular object and is fed in its lengthwise direction, and an apparatus main body that is attached to the periphery of the apparatus main body and is in constant contact with the inner surface of the tubular object. A plurality of radial holding legs to be kept at the center, a revolving structure rotatably supported with respect to the support cylinder of the apparatus main body, and radiation mounted around the revolving structure and capable of constantly contacting the inner surface of the cylindrical object. Direction, a plurality of nozzle support arms, and a plurality of high-pressure water nozzles fixed to a portion near each tip of each nozzle support arm in a state of being close to the inner surface of the tubular body and inclined with respect to the radial direction. A cleaning device for the inner surface of a cylindrical object, characterized in that 2. The apparatus main body is provided with a high-pressure water pipe located at the center thereof and supplied with high-pressure washing water from the outside, and a distribution pipe fixed to the center of the revolving structure is provided for the high-pressure water pipe. The apparatus for cleaning the inner surface of a tubular article according to claim 1, wherein the cleaning apparatus is connected via a swivel joint, and high-pressure cleaning water is distributed and supplied from the distribution pipe to the high-pressure water nozzle. 3. The device main body is provided with a joint to which a pulling means of a pulling / driving device positioned outside the tubular object can be connected. The cleaning device for the inner surface of the cylindrical object according to 1. 4. The swivel joint is provided at the tip of the distribution pipe, and a joint to which a pulling means of a pulling / driving device located outside the tubular object can be connected. A cleaning device for the inner surface of the cylindrical object described.