JP3799571B2 - How to clean the flue - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to dismantling of an incinerator, and more particularly to a flue cleaning method and a flue cleaning apparatus.
[0002]
[Prior art]
When dismantling a plant or incineration plant that handles hazardous substances, the hazardous substances still remain in the plant even after the operation is stopped. Therefore, when dismantling or recovering a plant or an incineration plant, it is a problem that harmful substances contaminate the human body, or pollutants are scattered in the surrounding environment and pollute the environment. Such operations such as cleaning the inside of the plant with human hands are extremely dangerous operations. In addition, the chimney where the combustion products are discharged in this highly contaminated plant, especially the combustion stack, is poorly contaminated and the chimney itself has a high altitude. Substances are likely to be scattered, and it is necessary to pay careful attention to the working environment and the surrounding environment when disassembling.
[0003]
Conventionally, when disassembling such a chimney, a method of dismantling the chimney on its side or cutting it into a short length and disassembling it, and a method of dismantling the chimney sequentially from the top to the lower side without taking over the chimney, have been adopted. Yes. At that time, there is a problem that harmful substances are scattered in the air and pollute the surrounding environment. The chimney is usually lined with refractory bricks on the inner side of the outer cylinder, and bricks that are contaminated with harmful substances fall down from the top of the chimney and disperse, resulting in contamination of the surrounding environment, There is also a problem that involves danger to workers.
[0004]
Conventionally, when dismantling a chimney having such a refractory brick, (1) removing the refractory brick first, (2) removing, disassembling, adhering and cleaning the refractory brick, (3) refractory brick Is fixed to the outer cylinder, and the outer cylinder and the refractory brick are simultaneously dismantled. However, as described above, the inside of the chimney is highly polluted. Especially, refractory bricks have a flue, so the degree of contamination is severe. If the refractory bricks are removed first, the contaminated bricks Falls and pollutes the surrounding environment, and the operator must handle highly contaminated bricks, and the influence on the surrounding environment cannot be ignored. Another problem is that the impact on the worker cannot be ignored in terms of the working environment. In addition, the above-described method of cleaning the inside of the flue prior to the demolition of the chimney performs the demolition of the chimney after cleaning, so that the impact on the surrounding environment due to falling bricks etc. can be reduced, but the worker must Since it is necessary to work inside the flue, it is not preferable in terms of the working environment. In addition, unwashed bricks fall when the worker cleans them, contaminating the surrounding environment, and there are many problems in the work environment. Even when the refractory brick is fixed to the outer cylinder and disassembled, it is similarly undesirable in terms of the working environment, and it is necessary to consider the surrounding environment separately.
[0005]
In addition, when manually removing chimneys and the like contaminated with high-concentration dioxins as in the past, special work clothes for pollution prevention are required, or in order to breathe, air cylinders or It is necessary to supply air separately. In addition, there are many parts that are not easily put by the operator, which increases the degree of danger. On the one hand, work clothes and equipment contaminated by work are not suitable for reuse and must be discarded, and even with the protection described above, workers are completely protected from contamination. Is difficult.
[0006]
For the reasons described above, it is not preferable in the working environment for the worker to enter the flue and work, and it is necessary to prevent contamination to the surrounding environment as much as possible when disassembling.
[0007]
Therefore, until now, when dismantling a chimney installed in an incinerator, etc., it is possible to clean the interior of the flue by unattended so as not to pollute the surrounding environment and also tolerate the work environment. There was a need for good flue cleaning methods and flue cleaning equipment.
[0008]
[Problems to be solved by the invention]
Therefore, in view of the above-mentioned problems, the present invention significantly improves the working environment and minimizes the influence on the surrounding environment. An object is to provide an apparatus.
[0009]
[Means for Solving the Problems]
According to the invention of claim 1 of the present invention, in the chimney flue cleaning method comprising an outer cylinder extending vertically from the foundation to the top and a refractory brick wall whose inner surface defines a flue,
It is connected to a high-pressure air supply member inserted from the chimney top, and is held rotatably with respect to the high-pressure air supply member A remotely operable flue cleaning means having high-pressure air ejection means is inserted into the flue, the interior of the flue is shut off from the surrounding environment, and high-pressure air is ejected to the inner surface of the flue to cause a circumferential direction on the inner surface of the flue The high-pressure air jetting means is rotated along the chimney in the vertical direction of the chimney Inside The combustion means ash is removed from the inner surface of the flue by moving the cleaning means, and sucked by a suction means including a filter means for capturing the combustion adhesion ash connected to an opening formed below the chimney. A method for cleaning an inside of a flue is provided.
[0010]
According to invention of Claim 2 of this invention, the said high pressure air ejection means is Coupled to the high pressure air supply member; Driven by an air motor disposed at the center of the high-pressure air jetting means. And a filler injecting step of filling the space with a filler for fixing the outer cylinder and the refractory brick wall. A method for cleaning a flue is provided.
[0011]
According to the invention of claim 3 of the present invention, The flue cleaning means is An upper support and a lower support that are inserted into the chimney and arranged concentrically with the central axis of the chimney, and are supplied concentrically between the upper support and the lower support and supplied from a high-pressure air supply member A high-pressure air ejection member that can be rotated by high-pressure air, and one end that is movably attached to the upper support and the other end that is adjacent to the inner surface of the flue and that is attached to the upper support in an axially symmetrical manner. Attachment provided on the upper support for attaching a plurality of upper support members, and moving means for suspending the upper support, the lower support, and the high-pressure air jetting member integrally in a vertically movable manner A plurality of lower support members that are attached to the lower support in an axially symmetrical manner with a rotating member that is movably attached to the lower support at one end and is adjacent to the inner surface of the flue at the other end; One end is attached to the lower support A plurality of pressing members that are connected to the lower support member and press the lower support member against the inner surface of the flue, and are moved in the vertical direction by the moving means and the high-pressure air Cleaning the inside of the flue, wherein the inside surface of the flue is washed in the vertical direction and the circumferential direction by removing the combustion ash by jetting the high-pressure air from the jetting member. Method Is provided.
[0012]
According to a fourth aspect of the present invention, the rotating member disposed on the upper support member and the lower support member is a guide roller for guiding the cleaning device in the flue in a direction perpendicular to the chimney. Cleaning the flue, characterized by Method Is provided.
[0013]
According to the invention of claim 5 of the present invention, the high-pressure air ejection member includes a central air motor that is rotatably introduced with the high-pressure air introduced therein, and the high-pressure air that is attached to the central air motor symmetrically. A communication member to be supplied to the inner surface of the flue, a guide member provided at an end of the communication member adjacent to the inner surface of the flue and pressed against the inner surface of the flue by the elasticity of the communication member, and the smoke of the communication member A flue cleaning system comprising: an air nozzle provided on a side facing the inner surface of the road and jetting the high-pressure air onto the inner surface of the flue Method Is provided.
[0014]
The chimney dismantling method to which the present invention is applied is a method in which the inside of the chimney's chimney is cleaned by unmanned construction under hermetic conditions, and the static operation is performed without the chimney lying on its side, followed by a remote operation that is unmanned. A splitting process is performed. Hereafter, the structural member and apparatus used for the unmanned construction of this invention are demonstrated.
[0015]
FIG. 2 shows that the unmanned cleaning process in the chimney demolition method to which the present invention is applied is applied to the chimney 1 shown in FIG. It is shown that a dust collector 8 is disposed in the flue opening 5 and sealed, and a top cover of the flue 1 is provided with a sealing cover 9 for sealing the top. In this way, by cleaning the inside of the flue 6 while the inside of the chimney 1 is sealed from the surrounding environment, the combustion adhering ash inside the flue 6 is not released to the surrounding environment, there is no pollution to the worker, and the chimney is disassembled. It becomes possible to perform construction.
[0016]
In FIG. 2, a flue cleaning device 11 for cleaning the flue inner side surface 10 by air jetting with high-pressure air inside the flue 6 and the flue cleaning device 11 are suspended so as to be movable in the vertical direction. It is shown that a winch 12, a high-pressure air supply member 13 for supplying high-pressure air to the flue cleaning device 11, and a compressor 14 for generating high-pressure air are arranged.
[0017]
The flue cleaning device 11 is suspended from the winch 12 by a suspension means such as a wire 15 to an intermediate portion of the chimney 1 and further connected to a high-pressure air supply member 13 to which high-pressure air from the compressor 14 is supplied. . The high-pressure air supply member 13 is a flexible hose that can sufficiently withstand the pressure of the high-pressure air, and follows the movement of the flue cleaning device 11 that is moved up and down by the winch 12. The rigidity, inner diameter, and the like of the hose can be appropriately selected so as to match the required flexibility of the hose and the required high-pressure air supply amount.
[0018]
FIG. 3 is a view showing a chimney cleaning device 11 housed in the flue 6 and a cross section of the chimney 1 by cutting the chimney along the cutting line AA of FIG. The chimney 1 has an outer cylinder 3 made of RC as the outermost side, and a space 7 for heat insulation toward the inner side in the radial direction. It is shown that it is formed from a refractory brick wall 4 that forms This space 7 is shown to be filled with lightweight foamed mortar by a process described later. The inner side surface of the refractory brick wall 4 is a flue inner side surface 10 that forms the flue 6. Combustion adhering ash accumulates on the flue inner side surface 10 due to long-term use, and the combustion adhering ash is high in harmful components such as dioxin which is released to the surrounding environment and is not preferable for contact with workers. Contained in the concentration.
[0019]
The flue cleaning apparatus 11 shown in FIG. 2 and shown in more detail in FIG. 3 is operated remotely, so that the worker enters the flue 6 in the above-described poor environment and the operator enters the flue 6. Can be cleaned without work.
[0020]
In FIG. 3, an upper support 16 described later is omitted to clearly show a high-pressure air ejection device 17 used as a high-pressure air ejection means for ejecting high-pressure air to the flue inner surface 10. The center of the high-pressure air ejection device 17 is concentric with the center of the flue 6, so that the operation of the flue cleaning device 11 is smoothly performed and uniform cleaning can be performed. The central portion of the high-pressure air ejection device 17 is rotatably supported at the center of the lower support 18, and a high-pressure air introduction port 19 is provided to form an air motor 17 '.
[0021]
A spring pipe 20 through which high-pressure air is passed is extended from the center of the high-pressure air ejecting device 17 toward the radially outer side so as to be close to the flue inner surface 10. The pipe 20 is arranged symmetrically about the central axis so that the pressure of the high-pressure air acts uniformly. In FIG. 3, the number of the pipes 20 is three, but this number can be appropriately changed in order to obtain an appropriate cleaning effect and operation of the flue cleaning apparatus 11. A guide member 21 such as a roller that rotates adjacent to the inner surface 10 of the flue and rotates in the circumferential direction is also disposed at the tip of the pipe 20. The guide member 21 presses the roller 21 against the flue inner side surface 10 by the elasticity of the pipe 20 formed in the shape of a spring pipe, and keeps the high-pressure air nozzle (described later) and the flue inner side surface 10 constant. The pipe 20 is provided with an air nozzle 22 at a position facing the rotation center from the roller 21 and facing the flue inner surface 10, and the high-pressure air supplied from the compressor 14 is supplied to the flue inner surface 10. The flue inner side surface 10 can be cleaned by being ejected toward the head.
[0022]
4 is a view showing the flue cleaning apparatus 11 of the present invention when the chimney 1 is cut out along the cutting line BB in FIG. 3 and viewed from the direction of the arrow C in the figure. The flue cleaning apparatus 11 of the present invention includes an upper support 16, a high-pressure air ejection device 17, and a lower support 18. The high-pressure air ejection device 17 includes the upper support 16 and the lower support 18. The air swivel 23 is disposed between the two. An air hose 13 is connected to the air swivel 23. When high-pressure air from the compressor 14 is introduced, the high-pressure air ejection device 17 is rotated by the supplied high-pressure air.
[0023]
One end of upper support members 24a and 24b that are arranged symmetrically with respect to the central axis and project upward are attached to the upper support 16 so as to be movable. Rotating members 25a and 25b such as guide rollers are provided at the other ends of the upper supporting members 24a and 24b, and the rotating members 25a and 25b of the upper supporting members 24a and 24b come into contact with the inner surface 10 of the flue by a spring. ing.
[0024]
One end of lower support members 26a and 26b which are arranged symmetrically with respect to the central axis and protrude downward are attached to the lower support 18 shown in FIG. 4 so as to be movable. Rotating members 27a and 27b such as guide rollers are provided at the other ends of the lower support members 26a and 26b. The guide rollers 27a and 27b of the lower support members 26a and 26b are attached to the lower side portion of the lower support 18 and extend toward the flue inner side surface 10 so that the ends thereof are the lower support members 26a and 26b. It is pressed so as to be adjacent to the flue inner side surface 10 by a pressing member connected to the lower side portion, for example, air cylinders 28a and 28b. By pressing the guide rollers 27a and 27b toward the inner surface 10 of the flue in this manner, the arrangement of the cleaning device 11 in the flue 11 together with the upper support members 24a and 24b is stabilized, and the high-pressure air jet device 17 is stabilized. The counter-rotation reaction prevents the flue cleaning device 11 itself from rotating. Further, FIG. 4 shows that the flue cleaning device 11 is suspended by the wire 15 via the attachment member 29.
[0025]
Further, in the unmanned subdivision process in the chimney demolition method to which the present invention is applied, a pulverizing means such as a remotely operated backhoe is used, which will be described later in detail with reference to FIG.
[0026]
FIG. 5 is a view showing a flowchart of a chimney demolition method for an incineration plant to which the present invention is applied. The chimney dismantling method to which the present invention is applied starts from step 101, and then proceeds to the preparation work of step 102, and around the chimney 1, a compressor 14, a dust collector 8, and foam mortar as will be described later are installed in the space of the chimney 1. Preparatory work will be carried out, such as arranging equipment for filling 7 and removing unnecessary items in the vicinity.
[0027]
Next, in the demolition method to which the present invention is applied, in step 105, a filler for fixing the outer cylinder 3 and the refractory brick wall 4 is injected so that the refractory brick forming the refractory brick wall 4 does not fall during the demolition process. Move on to filling material injection process. By the filler injection process of step 105, the space 7 between the outer cylinder 3 and the refractory brick wall 4 is filled with the filler, specifically, the lightweight foamed mortar prepared in steps 103 and 104, and the contaminated brick is washed. In the process 106 and the subsequent short cutting process 107, the refractory brick is prevented from falling, work safety is ensured, and contamination of the surrounding environment due to the fall of the brick can be minimized. This step 105 will be described in detail with reference to FIG.
[0028]
FIG. 6 is a diagram showing in detail the filler filling process in step 105 described above. The chimney 1 shown in FIG. 6 is formed along the outer cylinder 3 spaced from the outer cylinder 3 in the radial direction from the outer cylinder 3 extending in the vertical direction from the foundation buried in the ground. It is formed from a refractory brick wall 4 formed of a refractory brick that forms a space 7 with the cylinder 3. Further, in FIG. 6, for convenience of explanation, unnecessary members are omitted and the space 7 is enlarged.
[0029]
The filling material filling step shown in Step 105 starts from securing an opening 31 in a portion corresponding to the space 7 at the chimney top. The opening 31 is used for inserting a filler injection means 32 for introducing a filler such as foam mortar. Specifically, the filler injection means 32 may be a member having a thickness and flexibility that can appropriately supply fillers such as pipes, tubes, and hoses, and that can connect the chimney 1 and the filling pump 33. Any member can be used. In FIG. 6, it is shown that the above-described openings 31 are provided at two places and two filler injection means 32 are used. In the present invention, this number is set at an appropriate time. As long as the space 7 can be filled with a filler such as lightweight foamed mortar, the number may be one or more than two.
[0030]
After securing the opening 31, the filler filling means 32 is inserted into the space 7 from the opening 31. At this time, the insertion is performed until the tip of the filler injection means 32 is substantially at the ground level. By doing so, a portion of the lightweight foam mortar used for reducing the weight of the cut portion in the step 108 moving step of step 108, which will be described later, and for reducing the cost, is exposed from the lower part of the chimney, particularly from the ground surface. In this case, it is possible to fill without gaps, and the subsequent cutting process can be ensured and made efficient.
[0031]
Subsequently, a foaming agent is mixed with the mortar previously prepared by the filling plant 34 by the foaming agent mixer 35 to prepare a lightweight foamed mortar filler. Examples of such mortars include, for example, bubble mortar manufactured by Onoda Chemico Co., Ltd. If the object of the present invention can be achieved, lightweight mortar, foamed mortar, lightweight concrete, etc. Even if it is a filler, it can be used suitably. The lightweight foamed mortar mixed with the foaming agent is pumped into the space 7 through the filler injection means 32 by a filling pump to perform filling. In FIG. 6, the already filled lightweight foam mortar portion 36 is shown schematically. When the filling of the lightweight foam mortar as the filler is performed up to the top of the chimney 1, the filling pump 33 is stopped to stop the filling. After this, the lightweight foamed mortar solidifies, so that the outer cylinder 3 and the refractory brick wall 4 are firmly fixed, and it is possible to prevent the harmful effect of the brick falling off. The filler injection means 32 may be extracted after filling with the lightweight foamed mortar, if necessary, or left as it is until the lightweight foamed mortar is solidified, together with the outer cylinder 3 and the like in the short cutting step of Step 107 described later. It is also possible to cut.
[0032]
Next, the demolition method to which the present invention is applied moves to the contaminated brick cleaning process in step 106. This process will be described with reference to FIG. 2. A stack 30 for installing a flue cleaning apparatus is installed in the outer cylinder 3 of the chimney, and a winch 12 for the flue cleaning apparatus 11 is arranged. Subsequently, the dust collector 8 is connected to the flue port 5 via the ventilation pipe 8a, and the flue port 5 is sealed. Next, the flue cleaning device 11 connected to the wire 15 of the winch 12 is introduced into the flue 6. Next, the top of the chimney is sealed with the sealing cover 9 to block the inside of the flue from the surrounding environment. By doing in this way, the possibility that the pollutant inside the flue 6 is discharged to the surrounding environment and contaminates the surrounding environment and the worker can be minimized. Next, the compressor 14 is activated to send high-pressure air to the flue cleaning device 11, and the high-pressure air is ejected from the high-pressure air nozzle 22 of the flue cleaning device 11 to rotate the high-pressure air ejection device 17, and the combustion adheres in the circumferential direction. Wash the ash. The dust collector 8 is started simultaneously with the start of the supply of the high-pressure air to the flue cleaning apparatus 11 described above, and the combustion adhering ash separated from the flue inner side surface 10 by the cleaning is sucked. By doing so, the inside of the flue is cleaned, and at the same time, the air flow containing the contaminated combustion adhering ash flows in the direction of arrow D in FIG. 2, and the combustion adhering ash is recovered. It becomes possible. When the above-described cleaning apparatus 11 in the flue finishes cleaning the combustion adhering ash in the circumferential direction, the cleaning apparatus 11 in the flue is sequentially moved to the lower side of the chimney by driving the winch 12 by remote operation. The inner surface in the circumferential direction and the vertical direction is cleaned by an unmanned construction process using remote control. Note that the dust collector 8 described above is equipped with a filter sufficient to trap the combustion adhering ash.
[0033]
The cleaning of the inside of the flue 6 by the unmanned construction of the present invention is performed after the lightweight brick mortar filling step described later in the chimney demolition method using the rotary air jet cleaning machine described above during the cleaning of the refractory brick wall. This is preferable in that it does not collapse.
However, in the present invention, the above-described contaminated brick cleaning step 106 is described as being performed after the filler filling step 105. However, when it is known in advance that the strength of the refractory brick wall 4 is sufficient. It is also possible to perform the contaminated brick cleaning step 106 before the filler injection step 105.
[0034]
Next, the chimney dismantling method to which the present invention is applied moves to the short cutting process in step 107. This process is a process that enables static dismantling of the chimney without causing pollution to the surrounding environment such as laying the chimney on its side. This short cutting process will be described with reference to FIG. First, in the short cutting process in step 107, work scaffolds 37a and 37b are temporarily installed in the vicinity of the chimney. Next, a temporary enclosure 38 is temporarily installed from the ground GL around the work scaffolds 37a and 37b. The temporary enclosure 38 is disposed in order to further prevent contamination to the surrounding environment and workers due to generation of dust during the short cutting process. The temporary enclosure 38 is preferably higher than the working scaffolds 37a and 37b and the chimney 1 in terms of preventing contamination more reliably.
[0035]
Next, in the short cutting process 107, the chimney 1 is cut by a wire saw method as shown in FIG. In this short cutting process 107, as shown in FIG. 8, the wire saw 40 extended from the ground via the guide pulley 39 is passed over the outer cylinder 3 of the chimney, and the driving device 41 drives the wire saw 40 to make a chimney. 1 is cut. In the present invention, a blade-type concrete cutter can be used as appropriate.
[0036]
FIG. 8 shows that the wire saw means 40 is stretched over the RC structure, specifically the chimney 1 and is connected to the drive device 41 by a plurality of guide pulley means 39. The driving device 41 is placed on a moving device 42 installed on the ground. The moving device 42 is configured to be able to move in a horizontal direction with respect to the RC structure called the chimney 1 so that the cutting load applied to the wire saw means 40 can be changed. The structure can be continuously cut with an appropriate cutting load from a direction opposite to the side where the driving device 41 and the moving device 42 are arranged. Any drive device 41 and moving device 42 can be used as long as they can move the drive device 41 so that an appropriate torque can be applied and an appropriate cutting load can be applied.
[0037]
Next, the chimney demolition method to which the present invention is applied moves to the cutting part moving step of Step 108.
This cutting part moving step is a step of moving the cut portion 43 of the chimney 1 cut into a short length to a working chamber for further disassembling. Since this process has already been fixed to the outer cylinder 3 with the foamed mortar refractory brick wall 4 in the filler filling step of Step 105, it is possible to efficiently perform this process without causing a problem of brick detachment.
[0038]
The cutting part moving step 108 will be described with reference to FIG. In this cutting part moving step 108, first, a wire is passed over the washing machine installation base 30 installed at the top of the part 43 of the chimney 1 and is indicated by an arrow E in FIG. As described above, the cutting portion 43 is moved in the vertical direction, raised until it exceeds the work scaffolds 37a and 37b and the temporary enclosure 38, and after being placed on the ground, for example, is moved to the rear working room in a separate process. The roof portion of the split working chamber may be opened and closed so that it can be moved directly from the crane to the subdivision working chamber. In addition, in the short cutting process of step 107 mentioned above and the cutting part movement process of step 108, it is preferable that the dust collector 8 is always started, and it is made to prevent contamination dust from scattering to surrounding environment. By doing so, contamination to the surrounding environment can be prevented.
[0039]
Next, the chimney dismantling method to which the present invention is applied proceeds to the disassembling process of step 109 shown in FIG. In the splitting process of step 109, after the cut portion 43 of the chimney 1 is moved to the split working chamber 44 that is cut off from the surrounding environment, wireless operation from the operation chamber 45 apart from the split working chamber is performed. A work machine such as a remotely operated radio control backhoe is used. In the operation at this time, the backhoe is operated by the operation panel while looking at the monitor of the operation room 45 provided in the non-contaminated area. An in-vehicle camera is attached to the backhoe, and it is possible to perform unmanned construction by remote operation in the split work as if the backhoe is actually operated. The small work chamber 44 is also provided with a dust collector 46 so as not to pollute the surrounding environment.
[0040]
Next, the chimney demolition method to which the present invention is applied moves to the waste disposal step of Step 110. In this waste disposal process, uncontaminated RC walls are taken out of the workplace, and refractory bricks with high levels of contamination are appropriately drummed and stored inside another building. It is preferable to perform an appropriate process.
[0041]
Further, the remaining chimney 1 is disassembled by newly attaching a crane lifting member to the outer cylinder 3 and repeating the steps 107 to 110 described above. Thus, when the chimney dismantling method of the present invention is completed, the above-ground portion of the chimney 1 can be disassembled without contamination to the surrounding environment.
[0042]
Furthermore, in the present invention, in order to further reduce the contamination as necessary, it is possible to perform the above-described dismantling method after removing the surface portion of the chimney 1 in advance by a process such as chipping.
【The invention's effect】
[0043]
According to the first aspect of the present invention, there is a space between the outer cylinder extending in the vertical direction from the foundation to the top and the outer cylinder spaced radially inward along the outer cylinder and extending in the circumferential direction. A chimney flue cleaning method comprising a refractory brick wall having an inner surface defining a flue and a remotely operable flue cleaning means comprising a high-pressure air jetting means capable of rotation Inserting into the flue, shutting off the inside of the flue from the surrounding environment, jetting high-pressure air to the inner surface of the flue, rotating the high-pressure air jetting means along the circumferential direction of the flue inner surface, Filter means for removing the combustion ash from the inner surface of the flue by moving the flue cleaning means across the direction and capturing the combustion ash connected to an opening formed at a predetermined position below the chimney. Suction by the provided suction means Since flue cleaning method is provided, wherein, flue cleaning method capable unmanned construction with excellent working environment can be provided.
[0044]
According to a second aspect of the present invention, there is provided a method for cleaning an inside of a flue, characterized in that the high-pressure air ejection means is driven by an air motor 17 ′ disposed at the center of the high-pressure air ejection means. Therefore, it is possible to provide a flue cleaning method capable of unmanned construction with excellent working environment.
[0045]
According to the third aspect of the present invention, the upper support and the lower support that are inserted into the flue and are disposed concentrically with the central axis of the chimney, and between the upper support and the lower support. A high-pressure air ejection member that is concentrically attached to the high-pressure air supply member and that can be rotated by high-pressure air supplied from a high-pressure air supply member, and a rotary member that has one end movably attached to the upper support and the other end adjacent to the inner surface of the flue. A plurality of upper support members attached to the upper support in an axially symmetrical manner, and a moving means for suspending the upper support, the lower support, and the high-pressure air jetting member integrally so as to be movable in the vertical direction A mounting member provided on the upper support and a rotating member having one end movably attached to the lower support and adjacent to the inner surface of the flue at the other end. A plurality of lower support members attached to the A plurality of pressing members having an end attached to the lower support and the other end connected to the lower support member to press the lower support member against the inner surface of the flue; The inside surface of the flue is washed in the vertical direction and the circumferential direction by removing the combustion adhering ash by ejecting the high-pressure air from the high-pressure air ejection member. Since the flue cleaning apparatus is provided, the flue inner side can be unmanned and the flue cleaning apparatus excellent in the working environment can be provided.
[0046]
According to a fourth aspect of the present invention, the rotating member disposed on the upper support member and the lower support member is a guide roller for guiding the cleaning device in the flue in a direction perpendicular to the chimney. Since the flue cleaning apparatus characterized by the above is provided, a highly efficient flue cleaning apparatus excellent in the working environment can be provided.
[0047]
According to the invention of claim 5 of the present invention, the high-pressure air ejection member includes a central air motor that is rotatably introduced with the high-pressure air introduced therein, and the high-pressure air that is attached to the central air motor symmetrically. A communication member to be supplied to the inner surface of the flue, a guide member provided at an end of the communication member adjacent to the inner surface of the flue and pressed against the inner surface of the flue by the elasticity of the communication member, and the smoke of the communication member Provided is a flue cleaning apparatus provided with an air nozzle that is provided on the side facing the inner surface of the road and that injects the high-pressure air onto the inner surface of the flue, so that the inner surface of the flue can be cleaned efficiently. In addition, the inside surface of the flue can be unmanned and a flue cleaning device excellent in working environment can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of a chimney disassembled according to the present invention.
FIG. 2 is a diagram showing a cleaning process in a flue of the present invention.
FIG. 3 is an exploded top view of the flue cleaning apparatus of the present invention.
FIG. 4 is a side view of the flue cleaning apparatus of the present invention.
FIG. 5 is a flowchart showing a chimney demolition method to which the present invention is applied.
FIG. 6 is a diagram showing a filler filling process used in a chimney demolition method to which the present invention is applied.
FIG. 7 is a diagram showing a short cutting process used in a chimney demolition method to which the present invention is applied.
FIG. 8 is a diagram showing a wire saw used in a chimney demolition method to which the present invention is applied.
FIG. 9 is a schematic view showing a splitting process in a dismantling method to which the present invention is applied.
[Explanation of symbols]
1 ... Chimney
2. Basics
3 ... Outer cylinder
4 ... Refractory brick wall
5 ... Flue exit
6 ... Flue
7 ... space
8 ... Dust collector
8a ... Ventilation pipe
9 ... Sealing cover
10 ... Inside the flue
11 ... Cleaning device in the flue
12 ... winches
13 ... High pressure air supply member
14 ... Compressor
15 ... Wire
16 ... Upper support member
17 ... High-pressure air ejection device
17 '... Air motor
18 ... Lower support
19 ... High pressure air inlet
20 ... Spring pipe
21 ... Laura
22 ... Air nozzle
23 ... Air swivel
24a, 24b ... Upper support member
25a, 25b ... guide rollers
26a, 26b ... lower support member
27a, 27b ... guide rollers
28a, 28b ... Air cylinder
29 ... Mounting member
30 ... Stand for cleaning device in flue
31 ... opening
32 ... Filler injection means
33 ... Pump for filling
34 ... Filling plant
35 ... Foaming agent mixing plant
36 ... Lightweight foam mortar filling part
37a, 37b ... Working scaffold
38 ... Temporary enclosure
39 ... Guide pulley
40 ... Wire saw
41 ... Driving means
42. Moving means
43 ... Cutting part
44 ... Small work room
45 ... Control room
46 ... Dust collector
GL ... ground level

Claims (2)

In the chimney flue cleaning method comprising an outer cylinder extending vertically from the foundation to the top and a refractory brick wall whose inner surface defines a flue,
High-pressure air ejecting means inserted from the chimney top, connected to the high-pressure air supply member, and rotatably held with respect to the high- pressure air supply member, and connected to the high-pressure air supply member. A central air motor disposed in the center of the means; a communication member that is mounted on the central air motor in axisymmetric manner to supply the high-pressure air to the inner surface of the flue; and an end of the communication member that is close to the inner surface of the flue A guide member that is pressed against the inner surface of the flue by the elasticity of the communication member, and an air nozzle that is provided on a side of the communication member facing the inner surface of the flue and that injects the high-pressure air onto the inner surface of the flue. the remotely operable flue cleaning means comprising a high pressure air jet means is inserted into the flue, blocking the internal flue from the surrounding environment, and the air nozzle with high-pressure air to the flue side, the flue gas duct The distance between the surfaces is ejected while keeping constant by rotating the high pressure air ejection means along the circumferential direction of the該煙canal side, by moving the smoke canal cleaning means for the vertical direction of the stack A method for cleaning an inside of a flue, comprising removing the combustion adhering ash from the inner surface of the flue and sucking it by a suction means including a filter means for capturing the combustion adhering ash connected to an opening formed on the lower side of the chimney. The refractory brick wall is spaced radially inward along the outer cylinder and extends in the circumferential direction to form a space between the outer cylinder and the method. The method further includes the outer cylinder and the fireproof The method for cleaning an inside of a flue according to claim 1, further comprising a filler injection step of filling the space with a filler for fixing a brick wall.

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