JP2003294224A - Washer for washing inner wall of stack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably inject high-pressure water, to provide sufficient strength against water of considerably high pressure, and to confirm a washed condition over the whole inner wall of a stack. <P>SOLUTION: This washer is provided with a fixing table 80, a rotary water injection device 90 of specified structure, support legs 100 brought into pressure- contact with the stack inner wall to support the fixing table 80 in the center of an inside of the stack 200, a frame 11 fixed onto an upper opening of the stack to suspend the fixing table 80 in the center of the inside of the stack, a motor-driven winch 120 for elevating the table 80 via a rope 111 from the frame 110, a camera 130 for photographing the stack inner wall, and a luminaire 140. The inner wall of the stack is washed with water injected from a pipe 71 of the rotary water injection device 90 while the fixing table 80 is moved vertically by the motor-driven which 120. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chimney inner wall cleaning device for removing ash, dust and the like adhering to the inner wall of a chimney by jetting high pressure water.

[0002]

2. Description of the Related Art As a device and method for cleaning the inner wall of a chimney, for example, in Japanese Patent Application Laid-Open No. 49-83937 "" Method of removing ash adhering to inside of chimney ", a gondola suspended from a top opening of the chimney by four stays It is supported in the chimney so that it can move up and down with a roller, etc., two nozzles are rotatably attached to the gondola, high-pressure water is introduced into the nozzle from the outside with a hose, and while the high-pressure water is sprayed from the nozzle, the nozzle reacts to that The ash attached to the inner wall of the chimney is removed by rotating the. The gondola is moved up and down by a winch temporarily installed on the ground.

[0003]

However, in the method described in the above publication, since the high pressure water introduced from the outside through the hose is simply jetted from the nozzle as it is, the pressure of the water jetted from the nozzle is unsatisfactory. It is stable and the nozzle rotation is also non-uniform. For this reason, it is difficult to spray high-pressure water evenly inside the chimney, and a portion that cannot be cleaned easily remains. Also, although the structure is simple,
Since the hose and nozzle are connected only by the nipple or pipe, it is not possible to apply too high pressure and there is a problem in robustness.

Further, since it is visually checked whether or not the inner wall of the chimney has been cleanly cleaned, the lower part of the chimney can be visually checked more easily, but there is a problem that the lower the chimney becomes, the more difficult it becomes to visually recognize it.

Such a problem is not unique to the technique described in the above publication but generally applies to other devices and methods for cleaning the inner wall of the chimney by jetting high-pressure water.

Therefore, the present invention has been made by paying attention to such a problem, and it is possible to stably inject high-pressure water and to have a sufficient strength against considerably high-pressure water. It is also an object of the present invention to provide a chimney inner wall cleaning device that has the above-mentioned characteristics and can confirm the cleaning condition over the entire inner wall of the chimney.

[0007]

In order to achieve the above-mentioned object, a chimney inner wall cleaning device of the present invention includes a fixed base arranged inside the chimney, a water rotary injection device attached to the fixed base, and a fixed base. A support leg that is attached to the base and is pressed against the inner wall of the chimney to support the fixed base in the center of the chimney, and a hanging tool that is fixed to the upper opening of the chimney and hangs the fixed base in the center of the chimney. A pedestal to be lowered, and a winch for raising and lowering the fixed stand through a suspending tool which is installed outside the fixed stand or the chimney, and water sprayed from the water jetting device while the fixed stand is moved up and down by the winch. In the cleaning device for cleaning the inner wall of the chimney, the water rotary injection device is fixed to a shaft and has a cylindrical inner part facing along the shaft, and a cylindrical outer part facing the inner part with a space therebetween. Ha with parts And a cylindrical rotor rotatably supported with respect to the housing in a space between the inner portion and the outer portion of the housing, and one end of which projects from the space between the inner portion and the outer portion. And at least one high-pressure water inlet port on the outer portion of the housing so as to face the end portion on the opposite side of the protruding portion of the rotor and to inject water substantially tangentially to the outer periphery of the end portion. A plurality of recesses are formed on the outer periphery of the end of the rotor facing the high pressure water inlet, and a plurality of water jets are provided in the projecting portion of the rotor to connect the recesses and the water jets. It is characterized in that an annular flow path is provided.

In this washing apparatus, when high-pressure water is jetted from the high-pressure water inlet of the outside of the housing toward the concave portion of the rotor in the water rotary jetting device, the high-pressure water is fed to the concave portions provided side by side on the outer circumference of the rotor. The rotors rotate one after another. In other words, the rotor is rotatable, and the high-pressure water is sprayed from the high-pressure water inlet port in a substantially tangential direction on the outer periphery of the rotor, so that the pressure of the high-pressure water is transmitted to the recesses, and the rotor is rotated according to the pressure of the high-pressure water. Power is given. As a result, the rotor rotates, while the high-pressure water that hits the recess reaches the water jet port on the opposite side of the recess through the annular flow path, and is jetted to the outside from the water jet port. Here, since the rotor is rotating, the high pressure water from the water ejection port is also injected while rotating.

According to this water rotary injection device, the housing is a double cylinder having a cylindrical inner portion and an outer portion,
In the space between the inner part and the outer part, the rotor is rotated by water pressure, and the water moves from the concave portion at one end of the rotor to the water jet port at the other end through the annular flow path. The pressure of high-pressure water jetted from the water jet is stable,
The rotation of the rotor is also stable. Further, since it has a structurally sufficient strength, it is possible to introduce a considerable amount of high-pressure water as an input, so that the jet water as an output also has a sufficient pressure and has a high cleaning ability. Therefore, according to the cleaning device equipped with the water rotation injection device having such a feature, it is possible to strongly remove ash, dust and the like adhering to the inner wall of the chimney with high-pressure injection water.

In the basic structure of the water rotary injection device,
At least one high-pressure water inlet is provided, but by providing two high-pressure water inlets, the rotation of the rotor can be freely controlled without reducing the water pressure as the output from the water jet outlet. In this case, of the two high-pressure water inlets, one high-pressure water inlet is opened to the recess on the outer periphery of the rotor end so that the jet water from the inlet rotates the rotor in one direction. The other high-pressure water inlet is opened to the recess on the outer periphery of the end of the rotor so that the water is jetted from the inlet to rotate the rotor in the opposite direction.

Regarding the rotation control of the rotor, if the high-pressure water is only introduced from one high-pressure water inlet, depending on the pressure of the high-pressure water, the higher the rotation of the rotor, the more the water is discharged. At a low speed (for example, about 30 to 60 rpm), the water is ejected in a mist form from the water ejection port, and the water is ejected in a straight line from the water ejection port. This cleaning device is for cleaning the inner wall of the chimney, and cannot be cleaned cleanly if water spouts in a mist state, so it is necessary to reduce the rotational speed of the rotor.

Therefore, two high-pressure water inlets are provided, and high-pressure water is introduced from one of the high-pressure water inlets to rotate the rotor in one direction, and also from the other high-pressure water inlet. By reversely injecting water having a water pressure corresponding to the desired rotation speed of the rotor, the rotation of the rotor is braked and the rotation speed is reduced. Of course, the rotation direction (clockwise or counterclockwise) of the rotor can also be controlled by changing the high-pressure water inlet for introducing high-pressure water.

That is, by using one of the high-pressure water inlets for rotating the rotor and the other for controlling the rotation, the rotation of the rotor can be freely controlled without lowering the pressure of the water jetted from the water jet. . By the way, when simply changing the pressure of the high-pressure water introduced from one high-pressure water inlet, lowering the pressure of the introduced water lowers the rotation speed of the rotor, but also the pressure of the water ejected from the water ejection port. It falls and becomes useless for cleaning the inner wall of the chimney.

In addition, in the basic structure of the cleaning device, a fixed base is used to divide the peripheral portion of the inner wall of the chimney into four parts for photographing.
If the cameras of the stand are installed at equal angular intervals, the cleaning can be performed while checking the state of the inner wall of the chimney, so that the ash and dust adhering to the inner wall can be reliably removed, and the unwashed residue can be prevented. The image captured by the camera may be displayed on a monitor provided separately. On the monitor, images of each camera can be individually displayed on one screen or can be divided into four and displayed on one screen.

On the other hand, the winch is an electric winch installed on a fixed stand, and if a suspending tool (rope, wire, etc.) from the stand is inserted through the shaft of the water rotary injection device, the electric winch is operated to suspend the winch. It is possible to raise and lower the fixed base by winding up and out. The operation of the electric winch can be performed from the outside of the chimney by a controller, for example. Of course, it is preferable that not only the vertical movement of the fixed base but also its speed be variable.

Further, four support legs are attached to the fixed base, and each support leg is spread in a radial direction from the fixed base by a weight provided movably toward the center of the inside of the chimney at the lower part of the fixed base to expand the support legs. If it is biased to, it is possible not only to cope with the chimneys of various inner diameters within a certain range, but also to stably support the fixing base at the center of the inside of the chimney.

The chimney to which the cleaning device of the present invention can be applied has an inner diameter of about 1 to 3 m and a height of about 100 m, although it depends on the size and design of the device.
Other conditions are that the center of the chimney is set vertically, that there are no large holes or protrusions on the inner wall, that a pedestal can be attached to the top of the chimney, and that it can withstand the weight of the device, and that cleaning drainage is required. It is possible to flow.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to embodiments.

FIG. 1 is a schematic structural view of a main part of a chimney inner wall cleaning device according to the embodiment, and FIG. 2 is a schematic upper structural view thereof.

This cleaning device comprises a fixed base 80 arranged inside the small inner diameter chimney 200 and the large inner diameter chimney 201, a water rotating jet device 90 of a specific structure attached to the fixed base 80, and a fixed base. A support leg 100 attached to 80 and pressed against the inner wall of the chimney so as to support the fixed base 80 in the center of the inside of the chimney 200 (201), and a rope (hanging tool) 1.
11, a pedestal 110 that is fixed to the upper opening of the chimney 200 (201) and hangs the fixed pedestal 80 at the center of the inside of the chimney 200 (201), and a fixed pedestal 80 that is installed on the fixed pedestal 80 via a rope 111. An electric winch 120 for moving up and down, four cameras 130 for photographing the inner wall of the chimney 200 (201), and four lighting fixtures 140 for illuminating the inner wall of the chimney 200 (201).

Although the fixing base 80 has a transparent cylindrical shape (housing shape) here, the components such as the water rotary jetting device 90, the support leg 100, the electric winch 120, the camera 130, and the lighting fixture 140 are fixed securely.・ If it can be supported, it may be a frame.

The four support legs 100 are attached to the fixed base 80 at equal angular intervals, and are rotated by a guide pipe 101 rotatably supported on the upper part of the fixed base 80 and the tip of the guide pipe 101. Roller 10 mounted possible
It consists of 2. Further, one end of a wire 151 is connected to the base end of the guide pipe 101, and the other end of the wire 151 is a disc-shaped weight 150 movably arranged on the bottom of the fixed base 80 along a pipe 160 described later. Are linked to.

Therefore, in the normal state, the weight 151 moves downward due to its own weight, which causes the wire 151 to move.
Is pulled downward, and the guide pipe 101 is urged in the expanding direction. Therefore, for example, as shown in a schematic plan view of a chimney 201 having a large inner diameter as shown in FIG. 3, even a chimney having a large and small inner diameter is radially expanded from the fixed base 80 within a certain range. The supporting leg 100 (roller 102) is pressed against the inner wall of the chimney, and the fixed base 80 is stably supported at the center of the inside of the chimney.

The pedestal 110 has a chimney 20 as shown in FIG.
It is a rod-like member that is erected on the upper part of 0 and is fixed according to the diametrical direction of the chimney 200. A rope 111 is attached to the center of the frame 110. The rope 111 is attached by using a hanging can, for example.

The electric winch 120 is simply a rope 111.
Not only can you wind up and out, but you can also adjust its speed. Of course, the operation of the electric winch 120 can be controlled by a controller provided separately. By appropriately operating the electric winch 120 with the controller, the fixed base 80 moves up and down at a set speed.

The four cameras 130 are installed on the fixed base 80 at equal angular intervals, and image the peripheral portions of the inner walls of the chimneys 200, 201 in four divisions. In other words, the peripheral portion of the inner wall can be checked with four images as one set. The images of the four cameras 130 are displayed on a separately provided monitor in a single screen or in a 4-split screen. By equipping the camera 130, the cleaning can be performed while confirming the state of the inner wall of the chimney, so that the ash, dust and the like adhering to the inner wall can be reliably removed and the uncleaned residue can be prevented.

The four luminaires 140 are connected to each camera 130.
Corresponding to the above, they are arranged above each camera 130 at equal angular intervals. Since the inside of the chimney is dark not only at night but also during the daytime, by providing the lighting fixture 140, the inner wall portion can be clearly photographed by each camera 130.

Although not shown in the figure, an electric winch 1
The power supply / control cable 20 and the cables relating to the camera 130 and the lighting fixture 140 are inserted into the pipe 160 that extends and is attached to the center of the lower portion of the fixed base 80.
It is connected to each part. Further, the pipe 160 penetrates the center of the disc-shaped weight 150.

On the other hand, the rotary water jetting device 90 includes a fixed base 80.
The rope 11 is fixed in the center of the upper part,
1 is inserted. And, as detailed below,
High-pressure water is jetted horizontally from four pipes 71 extending from the device 90.

FIG. 4 is a schematic plan view (top view) of the water rotary injection device 90, and FIG. 5 is a vertical sectional view thereof. This water rotary injection device 90 is shown in FIG.
A housing 10 having a base 11 as a cylindrical inner portion facing each other along the hollow shaft 1 and a casing 12 as a cylindrical outer portion facing the base 11 with a space therebetween, and the housing 10. Is rotatably supported with respect to the housing 10 in the space between the base 11 and the casing 12, and one end of the base 11 and the casing 12
And a cylindrical rotor 20 projecting from the space between

The housing 10 has a double cylindrical structure composed of a cylindrical base 11 and a casing 12. The hollow shaft 1 is inserted through the center of the housing 10, and the rotor is provided in the space between the base 11 and the casing 12. It is a form in which 20 is arranged. The housing 10 is fixed to the hollow shaft 1 by attaching the base 11 at both ends of the hollow shaft 1 with nuts 16 via washers 15. Base 1
Reference numeral 1 denotes a tubular portion 11a facing each other along the hollow shaft 1, and a flange portion 1 attached to one end of the tubular portion 11a.
1b and.

The casing 12 is integrally attached to the flange portion 11b of the base 11 and faces the cylindrical portion 11a of the base 11 at regular intervals. This casing 1
On the one end side of 2 (on the flange portion 11b side of the base 11), the water is sprayed in a direction substantially tangential to the outer periphery of the end of the rotor 20 opposite to the end opposite to the protruding portion 20a. Two high pressure water inlets 13 are formed.

Of the two high-pressure water inlets 13, one of the high-pressure water inlets 13 has a recessed portion 2 which will be described later so that the rotor 20 is rotated in one direction (for example, clockwise) by the water sprayed from the inlets.
One is opened to 1, and the other is opened to the recess 21 of the rotor 20 so as to rotate the rotor 20 in the opposite direction (for example, counterclockwise) by the water jetted from the inlet. However,
In FIG. 5, for convenience, the high-pressure water inlet 13 is drawn vertically on the outer periphery of the end of the rotor 20. Although not shown in FIG. 5, each high pressure water inlet 13 is provided with a valve, and the inlet 13 can be opened and closed by the valve. A nozzle 70 for introducing high-pressure water from the outside is attached to the high-pressure water inlet 13. A hose is connected to the nozzle 70, and a high-pressure water supply source is connected via the hose.

The rotor 20 comprises a base 11 and a casing 1.
2 has a portion 20a projecting from the space between the two and an end portion on the side opposite to the projecting portion 20a, that is, the outer peripheral portion of the casing 12 facing the high-pressure water inlet 13 has a large number of hemispherical shapes. It has a recess 21. Recess 21
As shown in the front view of the rotor 20 in FIG. 6, a large number of are formed on the outer periphery at equal intervals. A plurality of protrusions (here, 4
The individual water jet ports 22 are formed at equal angular intervals (90 °). A pipe 71 for ejecting high-pressure water to the outside is attached to the water ejection port 22.

The recess 21 and the water jet 22 of the rotor 20 are
It communicates with the annular flow path 23. The flow path 23 includes an annular outer path 23a formed by a gap between the outer peripheral surface of the rotor 20 and the inner peripheral surface of the casing 12, and an annular inner path 23b formed inside the rotor 20. The outer path 23a is
Formed by partially thinning the rotor 20
The inner passage 23b is formed inside the rotor 20 near the outer periphery thereof. Therefore, the high-pressure water introduced from the high-pressure water introduction port 13 of the casing 12, as shown by the arrow, extends from the recess 21 to the gap between the inner peripheral surface of the casing 12 and the outer peripheral surface of the rotor 20,
It passes through the outer passage 23a and the inner passage 23b in order, flows into the pipe 71 from the water ejection port 22 of the rotor 20, and is ejected from the tip of the pipe 71.

On the other hand, the rotor 20 is rotatable with respect to the base 11 and the casing 12 of the housing 10,
Here, the bearing 31 provided between the inner peripheral surface of one end (the recess 21 side) of the rotor 20 and the outer peripheral surface of the cylindrical portion 11a of the base 11 facing the inner peripheral surface, and the other rotor 20 The rotor 20 is rotatably supported by the bearing 32 provided between the inner peripheral surface of the end portion (on the side of the water ejection port 22) and the outer peripheral surface of the cylindrical portion 11a of the base 11 facing the inner peripheral surface. To be done. Note that in FIG. 5, the rotor 20 tries to move upward in the drawing in accordance with the moving direction of water as the rotor rotates, but the movement of the rotor 20 is such that the upper washer 15 and the nut 1 are moved.
It is regulated by 6.

Packings 41 and 42 are arranged on both sides of the bearings 31 and 32, respectively, to prevent high pressure water from entering the gap between the outer peripheral surface of the cylindrical portion 11a of the base 11 and the inner peripheral surface of the rotor 20. Has become. Furthermore, the casing 12
The packing 43 is also provided between the inner peripheral surface of the rotor and the outer peripheral surface of the rotor 20.
Is arranged so that high-pressure water does not enter the gap.

On the other hand, an annular lid 50 is attached to the end surface of the casing 12 with a screw 52 via a packing 51, and the space accommodating the packing 43 is covered with the lid 50. An annular cover 60 is attached to the end surface of the rotor 20 with a screw 61, and the protruding portion 20a of the rotor 20 is attached.
The space inside is covered with a cover 60. Cover 60
Has a cylindrical bearing support 62, and the bearing 33 is attached to the bearing support 62. The bearing 33 rotatably supports the rotor 20 like the bearings 31 and 32. Further, the bearing 33
A sleeve-shaped collar 63 is attached to the
Stably supports the rotation of the rotor 20.

In the water rotary injection device 90 having such a structure, a nozzle 70 is connected to the high pressure water inlet 13 of the casing 12, and a high pressure water supply source (pump) is connected to the nozzle 70 via, for example, a hose (not shown). Etc.) (see FIG. 4). Further, a pipe 71 is connected to the water jet port 22 of the rotor 20 so that high pressure water is jetted to the outside.

Then, the high pressure water is supplied to one high pressure water inlet 13
When introduced further, the high-pressure water hits the recess 21 of the rotor 20. Since the high-pressure water is sprayed almost tangentially on the outer peripheral portion of the rotor 20, the pressure received by the recess 21 causes the rotor 20 to rotate.
Begins to rotate. Then, the high-pressure water successively hits the recesses 21 arranged on the outer periphery of the rotor 20, so that a rotational force corresponding to the pressure of the high-pressure water is applied to the rotor 20, and the rotor 20 rotates at a constant speed. In parallel with the rotation of the rotor 20, the recess 2
The high-pressure water hitting 1 is the annular flow path 23 (outer path 23a,
Water outlet 2 on the side opposite to the recess 21 flowing through the inner passage 23b)
2, it flows into the pipe 71 from the water ejection port 22 and is ejected from the nozzle-shaped tip of the pipe 71 to the outside. Of course,
Since the rotor 20 is rotating, the pipe 71 connected to the water outlet 22 also rotates to inject water.

Here, as described above, if the high-pressure water is only introduced from one of the high-pressure water inlets 13, the higher the rotation speed of the rotor 20, the higher the speed of rotation of the rotor 20, and the higher the water pressure is, the higher the water outlet 22 will be. It becomes a mist and gushes out. If the water becomes a mist, you cannot clean the inner wall of the chimney,
Water is also introduced from the other high-pressure water inlet 13 at a certain water pressure. Then, the water from the other high-pressure water inlet 13 hits the rotor 20 in the direction opposite to the rotation direction of the rotor 20, so that the rotation speed of the rotor 20 decreases, and when the rotation speed becomes low (for example, about 30 to 60 rpm), the water Will be ejected in a straight line from the water ejection port 22.

In this case, since the rotation of the rotor 20 is controlled by injecting water in the opposite direction while keeping the water pressure for rotating the rotor 20 in one direction, the rotation of the rotor 20 is simply reduced by decreasing the water pressure. Unlike this, the pressure of the jet water from the water jet port 22 does not drop. Therefore, the inner wall of the chimney can be strongly washed.

Further, according to the water rotary injection device 90, the housing 10 has the base 11 as the cylindrical inner portion.
Is a double cylinder having a casing 12 as a cylindrical outer portion, and the rotor 20 is rotated by water pressure in the space between the cylindrical portion 11a of the base 11 and the casing 12, so that water is absorbed in the rotor 20. Since the structure moves from the recess 21 at one end to the water jet 22 at the other end through the annular flow path 23, the pressure of the high-pressure water jetted from the water jet 22 of the rotor 20 is stabilized, and the rotor 20 The rotation is stable. Further, since it has a structurally sufficient strength, it is possible to introduce a considerable amount of high-pressure water as an input, so that the jet water as an output also has a sufficient pressure and has a high cleaning ability.

In addition to this, the annular flow path 23 is provided with the outer path 23.
Since it is composed of a and the inner passage 23b, the high-pressure water injected into the recess 21 at the one end of the rotor 20 can be smoothly guided to the water ejection port 22 at the other end of the rotor 20, and the energy loss of the introduced high-pressure water can be reduced. Less.

Moreover, since the concave portion 21 has a hemispherical shape,
Compared to other shapes (for example, a rectangle), the pressure of the high-pressure water injected from the high-pressure water inlet 13 can be transmitted to the rotor 20 most efficiently as a rotational force in both the clockwise and counterclockwise directions. This can also reduce the energy loss of the high pressure water.

Therefore, in the chimney inner wall cleaning device using the water rotary injection device 90 having such features, the pedestal 110 is fixed to the upper part of the chimney 200, for example, as shown in FIG. When arranged, the chimney 200 has a small inner diameter, so that the support leg 100 does not spread much as shown in FIG.
Presses against the inner wall of the chimney 200. As a result, the fixed base 8
0 is stably supported at the center inside the chimney 200. Of course, a hose from a high-pressure water supply source is connected to the nozzle 70 of the rotary water jetting device 90.

If high-pressure water is introduced from the two high-pressure water inlets 13 in this state, as described above, the pipe 71 rotates with the rotation of the rotor 20, and the high-pressure water flows from the pipe 71 to the stack 200. Injected toward the inner wall, the chimney 20
Ashes and dust adhering to the inner wall of No. 0 are removed cleanly. This cleaning operation is carried out while confirming with a monitor, and the electric winch 120 is used to appropriately move the fixed table 80 up and down so that there is no cleaning residue, and the entire inner wall of the chimney 200 is cleaned.

In the above embodiment, four pipes 71 for discharging high pressure water are provided, that is, the rotor 2
Although four water jet outlets 22 of 0 are provided, the number of water jet outlets 22 may be two or three. However, in order to perform stable rotation of the rotor 20, it is preferable to provide the water jet ports 22 at equal angular intervals.
Of course, the length of the pipe 71 is appropriately selected according to the inner diameter of the chimney.

In the above embodiment, the electric winch 1
Although the 20 is attached to the fixed base 80, the winch may be installed outside the chimney, the rope 111 may be brought out of the chimney using a pulley or the like, and the winch may be operated electrically or manually.

[0050]

As described above, according to the chimney inner wall cleaning device of the present invention, in the equipped water rotary injection device,
The housing is a double cylinder having a cylindrical inner portion and an outer portion, and the rotor is hydraulically rotated in a space between the inner portion and the outer portion, so that water flows from a concave portion at one end of the rotor to the other end. Since the structure is such that it moves to the water jet port of the part through the annular flow path, the pressure of the high-pressure water jetted from the water jet port of the rotor is stable and the rotation of the rotor is also stable.

Further, since it has a structurally sufficient strength,
A considerable amount of high-pressure water can be introduced as an input, so that the jet water as an output also has sufficient pressure and has a high cleaning capacity.

Therefore, ash, dust and the like adhering to the inner wall of the chimney can be strongly removed by the high-pressure jet water.

According to the structure of claim 2, the rotation of the rotor can be freely controlled without reducing the pressure of the water jetted from the water jet outlet.

According to the third aspect of the invention, since the cleaning can be performed while confirming the state of the inner wall of the chimney, the ash, dust and the like adhering to the inner wall can be surely removed and the uncleaned residue can be prevented.

According to the structure of the fourth aspect, it is possible to raise and lower the fixed base by operating the electric winch to wind up or feed out the hanging tool.

According to the structure of claim 5, not only can a chimney having various inner diameters be accommodated within a certain range, but also the fixing base can be stably supported at the center of the inside of the chimney.

[Brief description of drawings]

FIG. 1 is a schematic structural diagram of a main part of a chimney inner wall cleaning device according to an embodiment.

FIG. 2 is a schematic upper structural diagram of the cleaning apparatus.

FIG. 3 is a schematic plan view showing a state in which support legs of the cleaning device are expanded with respect to an inner wall of a chimney having a large inner diameter.

FIG. 4 is a schematic plan view showing an example of a water rotary injection device in the cleaning device.

FIG. 5 is a vertical sectional view of the water rotary injection device.

FIG. 6 is a front view of a rotor in the water rotary injection device.

[Explanation of symbols]

1 hollow shaft 10 housing 11 Base (inner part) 11a tubular part 11b Flange part 12 Casing (outer part) 13 High pressure water inlet 20 rotor 20a protruding part 21 recess 22 Water spout 23 channel 80 fixed base 90 Water rotating jet device 100 support legs 110 mount 111 rope (hanging tool) 120 electric winch 130 cameras 140 lighting equipment 150 weights 200 small inner diameter chimney 201 Large inner diameter chimney

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3B116 AA38 AB54 BB23 BB43 BB54                       BB90                 3K061 RA02 RA05 RA06 RA09 RA10                       RB02                 4F042 AA16 CB03 DA01 EA05 EA10                       EA18 EA20 EA30 EA34

Claims (5)

[Claims] 1. A fixed base arranged inside the chimney, a water jetting device attached to the fixed base, and a pressure contact with an inner wall of the chimney so as to support the fixed base attached to the fixed base at the center of the inside of the chimney. A support leg and a suspender, which is fixed to the upper opening of the chimney and hangs the fixed base at the center of the inside of the chimney; and a fixed base or a fixed base installed outside the chimney via the suspender. And a winch for raising and lowering, a cleaning device for cleaning the inner wall of the chimney with water sprayed from the water rotary spraying device while vertically moving the fixed base by the winch, wherein the water rotary spraying device is a shaft. A housing having a fixed cylindrical inner portion facing along the axis and a cylindrical outer portion spaced apart from the inner portion and facing each other, and a housing in a space between the inner portion and the outer portion of the housing. Against And a cylindrical rotor that is rotatably supported and has one end protruding from the space between the inner portion and the outer portion, and faces the end portion of the rotor opposite to the protruding portion and At least one high-pressure water inlet is provided in the outer portion of the housing so that water is sprayed substantially tangentially to the outer periphery of the end.
A large number of recesses are formed on the outer periphery of the end of the rotor facing the high-pressure water inlet, and a plurality of water jet outlets are provided in the projecting portion of the rotor. A chimney inner wall cleaning device characterized in that it is provided with a flow path. 2. A high-pressure water inlet of the water rotary injection device is provided in two, and one of the high-pressure water inlets is an end portion of the rotor so that the water is jetted from the inlet to rotate the rotor in one direction. It is characterized in that it is opened to the concave portion on the outer periphery, and the other high-pressure water inlet is opened to the concave portion on the outer periphery of the end portion of the rotor so as to rotate the rotor in the opposite direction by the water jetted from the inlet. The chimney inner wall cleaning device according to claim 1. 3. The chimney according to claim 1 or 2, wherein the fixed table is provided with four cameras for taking an image by dividing the peripheral portion of the inner wall of the chimney into four at equal angular intervals. Inner wall cleaning device. 4. The winch is an electric winch installed on a fixed base, and a suspending tool from the mount is inserted through a shaft of a water rotary injection device.
The chimney inner wall cleaning device according to claim 2 or 3. 5. The support legs are attached to four fixed bases, and each support leg is provided with a weight movably provided in a lower part of the fixed base so as to be movable toward the center of the inside of the chimney so as to spread radially from the fixed base. The chimney inner wall cleaning device according to claim 1, claim 2, claim 3, or claim 4, wherein the device is biased in a spreading direction.