JP7442401B2 - Nozzle device, pipe cleaning device and drainage vertical pipe cleaning method - Google Patents

Description

The present invention relates to a nozzle device, a pipe cleaning device, and a vertical drainage pipe cleaning method that are preferably used for cleaning drainage pipes installed in high-rise buildings such as apartment complexes.

Drainage generated from equipment such as sinks, washrooms, bathrooms, and toilets in high-rise buildings such as apartment complexes passes through horizontal branch pipes leading from the rooms of each equipment, and then is discharged as sewage from common vertical drainage pipes that penetrate each floor. Flushed into a tank, etc.

Drainage water contains a large amount of residue, oil, etc. As time passes for the wastewater to pass through, solid matter (sludge) formed by agglomeration of residues, oils, etc. in the wastewater gradually adheres to the inner wall of the drainpipe, gradually reducing the pipe's inner diameter. If sludge is left as it is, it may grow and clog the drain pipe. In order to prevent such drainage pipe blockages, vertical drainage pipes and horizontal drainage pipes installed in high-rise buildings need to be cleaned at regular intervals.

A method for cleaning vertical drainage pipes is to insert a pressure-resistant hose with a nozzle device attached to the tip into the vertical drainage pipe, and apply high-pressure water jetted from the rotating nozzle head to the sludge that has adhered to the inner wall of the vertical drainage pipe. Therefore, a high-pressure water cleaning method is used to clean the sludge by breaking it up.

As a high-pressure water cleaning method, a method of cleaning vertical drainage pipes from the lower floors to the upper floors is known. For example, Patent Documents 1 and 2 below disclose drainage vertical pipe cleaning that can clean even drainage vertical pipes installed in high-rise buildings where a large amount of sludge has adhered to the inner wall and the inner diameter has become small. We are proposing a device. Specifically, Patent Document 1 and Patent Document 2 disclose a drainage vertical pipe cleaning device for cleaning vertical drainage pipes of high-rise buildings, which includes a pressure-resistant hose equipped with a nozzle device at the tip, and a pressure-resistant hose inside the vertical drainage pipe. a drainage vertical pipe comprising a flexible upright support, such as a fiberglass rod or triple-layered aluminum pipe, to hold it upright; and a high-pressure water washer connected to a pressure hose to supply high-pressure water to the nozzle device. A cleaning device is disclosed.

According to the vertical drainage pipe cleaning device disclosed in Patent Document 1 and Patent Document 2, it is possible to clean the vertical drainage pipe from the lower floor side to the upper floor side by simply working from the lower floor side in the vertical drainage pipe of a high-rise building. Can be washed. However, in the drain vertical pipe cleaning devices disclosed in Patent Document 1 and Patent Document 2, although it is possible to remove sludge formed by agglomeration of residues, oils, etc. in drainage water, rust-like solids in metal drain pipes are removed. It was difficult to remove the kimono. The following techniques have also been proposed as techniques for solving such problems.

For example, Patent Document 3 below discloses a flexible shaft, a core bit connected to the tip of the flexible shaft, a motor connected to the end of the flexible shaft to rotate the core bit, and a motor arranged along the flexible shaft to provide flexibility. and a flexible upright member that provides uprightness to the flexible shaft. Further, Patent Document 4 below discloses a drainage vertical pipe cleaning device for cleaning vertical drainage pipes of high-rise buildings from openings formed on lower floors toward higher floors, which includes a plurality of shaft units. Discloses a drainage vertical pipe cleaning device that includes a shaft that is connected to each other, a core bit that is connected to the tip of the shaft on the upper floor side, a rotational drive mechanism that rotates the shaft, and a shaft lifting mechanism that raises and lowers the shaft. do.

In addition, for example, Patent Document 5 below discloses a method for removing adhered substances that cannot be removed by shot blasting, high-pressure water cleaning, etc., on a flexible shaft. A device is described in which various tools (pipe cleaning device) are attached to the distal end side of the flexible shaft, and the inner surface of the pipe is cleaned by rotating the tool (pipe cleaning device). In such a device, when the diameter of the pipes differs, it is necessary to use a cleaning device in the pipe that matches the diameter, which necessitates changing the device, which presents an extremely troublesome problem. In order to solve this problem, we have developed an attachment that moves around the support shaft for the movable member of the main body of the pipe cleaning device and is attached to the inner surface of the straight pipe section and/or joint section of the piping system. A movable member capable of removing a kimono, capable of protruding from an edge of the device body, and having a distance from the edge of the device body to the edge of the movable member when protruding. Disclosed is an intraductal cleaning device including a movable member configured to be variable.

Patent No. 5748255 Patent No. 5748251 JP 2019-2215 Publication JP2018-96121A Jito No. 3173081 Publication

The devices disclosed in Patent Documents 3 to 5 are devices that mechanically remove rust-like solid matter stuck to the inner wall of a vertical drainage pipe using a rotating device driven by a motor or the like. Since these devices use a motor as a driving force, there are problems in that the extended portion of the cleaning device becomes thick, the entire device becomes bulky, and the installation work at the work site becomes complicated.

The present invention provides a nozzle device, a pipe cleaning device, and a drainage vertical pipe cleaner for applying a mechanical impact to adhered substances such as rust firmly attached to the inner wall of a pipe to clean it without using a driving force such as a motor. The purpose is to provide a method for

One aspect of the present invention is to provide a tubular shaft part that is connected to a pressure hose and includes a tubular shaft body that has a drain port on the side surface of the pipe; A nozzle head that is equipped with at least one jetting port that jets water and rotates by the reaction force of the water jet, a plate-like part that extends from the side of the nozzle head and does not interfere with the water jet, and a plate-like part that is installed vertically. a nozzle device comprising: at least one blade member which is rotatably supported on the rear end side by a support shaft provided with the support shaft, and whose front end side opens away from the support shaft by centrifugal force due to rotation of the nozzle head; be.

According to such a nozzle device, the centrifugal force caused by the rotation of the nozzle head also rotates the plate-shaped portion that projects horizontally from the nozzle head. The blade member, which is rotatably supported by a support shaft installed upright in the disk-like part, rotates while opening due to the centrifugal force caused by the rotation of the nozzle head, and the blade member rotates while opening due to the centrifugal force caused by the rotation of the nozzle head. to remove stuck objects. The removed adhered substances are then washed away by high-pressure water jetted to rotate the nozzle head. According to such a nozzle device, adhered substances firmly adhered to the inner wall of the pipe are mechanically removed without using a driving force such as a motor, and the removed adhered substances are washed away. According to such a nozzle device, hard adherents such as rust attached to the inner wall of the pipe can be removed without using a driving force such as a motor.

In addition, in such a nozzle device, the blade member is rotatably supported by a support shaft installed upright on a plate-like part, and can be opened and closed within the range where it collides with the inner wall of the drain pipe. , the diameter of the blade member when opened changes. Therefore, even if a large adhered substance is attached to the inside of the pipe, the blade member closes to facilitate passage through the nozzle device. Furthermore, when the present invention is applied to pipes of different diameters, there is no need to prepare cleaning devices of different sizes to suit the different diameters, which makes the cleaning work inside the pipes easier.

Further, in the nozzle device, it is preferable that the disc-shaped portion is disc-shaped, the blade member has a tooth-shaped outer surface, and is housed within the disc-shaped surface in a closed state. With such a shape, when the blade member is closed, it is possible to pass through a thin pipe with a diameter close to that of a disk, and when the blade member is open, it is possible to pass through a thin pipe with a diameter close to that of a disc, and when the blade member is open, a tooth-like pipe with excellent cutting force can be passed through. This is preferable because the stuck objects can be effectively removed by colliding the outer surface with the stuck objects stuck to the inner wall of the pipe.

In addition, the nozzle device is disposed closer to the tip of the shaft body than the disk-shaped portion, and is convex toward the tip, and has an outer circumference equal to or greater than the outer circumference of the disk-shaped portion, and an outer circumference when the blade member is opened to the maximum. Preferably, the tip member further includes a tip member having an outer circumference smaller than . When advancing the nozzle device within the piping, the outer periphery of the plate-like portion may hit a joint or a branch pipe of the piping and become caught, thereby hindering the nozzle device's advancement. In such a nozzle device, by arranging a convex tip member on the tip side, the plate-shaped portion or the like becomes less likely to get caught in a seam or the like. Examples of the shape of such a member include a cap shape, a dome shape, an arrowhead shape, etc., which are convex on the distal end side.

Preferably, the nozzle device further includes a non-flexible water pipe of 50 to 1000 mm connected between the pressure hose and the tubular shaft body. By placing a non-flexible water pipe between the pressure-resistant hose and the tubular shaft body, the plate-like part is less likely to get caught in the joints when the nozzle device is moved straight in the direction of travel of the pipe. . Furthermore, the nozzle device is convex laterally around the non-flexible water pipe, and is equal to or larger than the outer circumference of the disc-shaped portion and smaller than the outer circumference when the blade member is opened to the maximum. It is preferable to further include a sled member having an outer periphery, since the nozzle device can be easily placed in the center of the pipe.

Another aspect of the present invention is a pipe cleaning device that includes a pressure-resistant hose that connects any of the nozzle devices described above to its tip, and a high-pressure water washer that supplies high-pressure water to the pressure-resistant hose. According to such a pipe cleaning device, it is possible to clean fixed substances such as rust firmly adhered to the inner wall of the pipe by applying a mechanical impact to the pipe without using a driving force such as a motor.

Preferably, the pipe cleaning device is a drainage downpipe cleaning device for cleaning drainage downpipes of high-rise buildings, further comprising a flexible upright support along the pressure hose. According to such a pipe cleaning device, the nozzle device can be easily raised from the lower floor side toward the higher floor side of the vertical drainage pipe of a high-rise building. When the pressure-resistant hose sends high-pressure water to the nozzle device, the blade member rotates in an open state due to the rotation of the disc-shaped portion that rotates with the rotation of the nozzle head within the vertical drainage pipe. Then, the blade member collides with the stuck material adhering to the inner wall of the vertical drainage pipe like a hammer to mechanically remove the stuck material. The mechanically removed adhered substances are then washed away by high-pressure water jetted from the nozzle head.

Another aspect of the present invention is a method for cleaning a vertical drainage pipe of a high-rise building using the vertical drainage pipe cleaning device, wherein a nozzle device is installed at an opening on the lower floor side of the vertical drainage pipe. The process of infiltration and the process of sending a pressure-resistant hose up from the lower floors to the upper floors in the vertical drainage pipe while jetting high-pressure water supplied from a high-pressure water washer from the nozzle head of the nozzle device. A vertical drainage pipe cleaning method comprising:

According to the nozzle device according to the present invention, it is possible to apply a mechanical impact to fixed substances such as rust firmly adhered to the inner wall of the pipe to clean it without using a driving force such as a motor.

FIG. 1 is a schematic front view for explaining the configuration of a nozzle device 10 according to an embodiment. FIG. 2 is a schematic vertical cross-sectional view along the pressure hose 11 of the nozzle device 10. 3A and 3B are diagrams illustrating how the nozzle device 10 is viewed from the tip side, in which (a) is a schematic top view, and (b) is a schematic diagram when the tip member 7 is removed from the nozzle device 10. be. FIG. 4 is an explanatory diagram illustrating a state when the blade members 5a, 5b of the nozzle device 10 are opened. FIG. 5 is a schematic explanatory diagram for explaining the tip member 17 of the nozzle device 20 of another embodiment. FIG. 6 is a schematic explanatory diagram for explaining a nozzle device 30 of another embodiment. FIG. 7 is a schematic explanatory diagram for explaining how the vertical drainage pipe P1 is cleaned using the nozzle device 10. FIG. 8 is a schematic explanatory diagram illustrating the overall configuration of the drainage vertical pipe cleaning device 50 to which the nozzle device 10 is connected. FIG. 9 is a schematic cross-sectional view of the pressure hose 11 to explain how it is supported by the flexible upright supports 15 (15a, 15b, 15c) in the drainage vertical pipe cleaning device 50. It is.

Hereinafter, one embodiment of a nozzle device according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view of the nozzle device 10 of this embodiment in a state connected to a pressure hose 11, in which (a) shows when the blade members 5a, 5b are closed, and (b) shows the nozzle device 10 when the blade members 5a, 5b are closed. It is a schematic diagram when opened. Moreover, FIG. 2 is a schematic sectional view of a cross section along the length direction of the pressure hose of the nozzle device 10.

Referring to FIG. 2, the nozzle device 10 includes a tubular shaft portion 1 including a tubular shaft 1a having a drain port 1b on the side surface of the tube, and a tubular shaft portion 1 that is rotatably and slidably supported on the shaft 1a. The nozzle head 2 is provided with a nozzle head 2 having an ejection port 2b that ejects water supplied from the water source. The nozzle head 2 is rotated by a reaction force when high-pressure water supplied from the drain port 1b of the tubular shaft portion 1 is injected from the jet port 2b.

Referring to FIG. 1, the nozzle device 10 includes a plate-shaped portion 3 that extends from the side surface of the nozzle head 2 and is disposed above the jet nozzle 2b so as not to interfere with the water jet from the jet nozzle 2b. . In addition, the rear end side is rotatably supported by support shafts 4a and 4b erected on the plate-like part 3 and support shafts 4a and 4b, respectively, and the tip is rotated by the centrifugal force caused by the rotation of the nozzle head 2. Blade members 5a, 5b whose sides open away from the support shafts 4a, 4b are provided. Furthermore, the blade members 5a and 5b each include stoppers 6a and 6b that limit the opening angles, a tip member 7 having a cap-like outer shape convex toward the tip, and a pair of nuts 8 for fixing the tip member 7. . Referring to FIG. 2, the cap-shaped tip member 7 has a shaft 1a inserted through an insertion hole formed in the center near its apex, and a hexagonal nut 8a and a bag-shaped nut 8b arranged above and below. It is fixed to the tip of the shaft body 1a with a pair of nuts 8.

Referring to FIG. 2, the shaft 1a of the tubular shaft portion 1 is a tubular member having a water passage 1c for passing water therein and a drain port 1b leading to the water passage 1c. It has a structure in which the supplied high-pressure water is discharged from the drain port 1b via the passageway 1c and is supplied to the nozzle head 2. Further, the nozzle head 2 is rotatably and slidably supported on the shaft 1a by inserting the shaft 1a of the tubular shaft 1 into an insertion hole 2d provided at the center thereof. It is provided with an injection port 2b that injects water supplied from the drain port 1b of the section 1.

The nozzle head 2 is formed with a water passage 2c through which water supplied from the drain port 1b passes through the injection port 2b. The nozzle head 2 rotatably and slidably supported on the shaft 1a rotates with respect to the shaft 1a due to a reaction force when water is jetted obliquely backward from the jet nozzle 2b. The number of injection ports is not particularly limited, but is preferably 1 to 3, more preferably 1 to 2, and particularly preferably 1.

Referring to FIG. 2, the nozzle device 10 includes a plate-shaped portion 3 that extends from the side surface of the nozzle head 2 and is formed above the injection port 2b so as not to interfere with the water jet from the injection port 2b. . Extending from the side surface of the nozzle head 2 means that the plate-shaped portion 3 is formed so as to extend in the circumferential direction from the side surface of the nozzle head 2 with its base end at the outer surface of the side surface of the nozzle head 2. .

Support shafts 4a and 4b are erected on the upper surface of the plate-shaped portion 3. Blade members 5a and 5b are rotatably supported on the rear end sides of the support shafts 4a and 4b, respectively. Specifically, holes 5c and 5d are formed at the rear end sides of the blade members 5a and 5b, respectively. The blade members 5a and 5b are rotatably supported by inserting the support shaft 4a through the hole 5c and the support shaft 4b through the hole 5d, respectively.

FIG. 3 is a schematic diagram illustrating how the nozzle device 10 is viewed from the tip side, in which (a) is a schematic top view, and (b) is a schematic diagram when the tip member 7 is removed from the nozzle device 10. It is.

Referring to FIG. 3(b), the disc-shaped part 3 is disc-shaped, and the blade members 5a and 5b are housed within the disc-shaped surface of the disc-shaped part 3 when they are closed. Preferably, it has a toothed outer surface. A blade member 5a is supported at its rear end by a support shaft 4a erected on the upper surface of the plate-shaped portion 3, and a blade member 5b is supported at its rear end by the support shaft 4b. The blade members 5a, 5b are housed in the disc-shaped surface of the disc-shaped portion 3 in a closed state, and the fact that their outer surfaces substantially coincide with the outer periphery of the disc-shape makes the blade members 5a, 5b disc-shaped. This is preferable since it can be accommodated compactly within the plane of the section 3.

It is preferable that the blade members 5a and 5b are metal lumps having a thickness and size that allow them to be broken by applying an impact like a hammer to a hard stuck object formed inside the pipe. Further, in the nozzle device 10 of this embodiment, there are two blade members, but the number may be changed as appropriate as long as the effects of the present invention are not impaired. Further, it is preferable that the outer surface is tooth-shaped, since it is possible to effectively remove stuck objects as if cutting hard stuck objects.

A stopper 6a is erected on the upper surface of the plate-shaped portion 3 so as to face the support shaft 4a across the rear end of the blade member 5a. It is preferable that the stopper 6b is erected so as to face the shaft 4b. By providing such a stopper, the angle at which each blade member opens is restricted, preventing each blade member from opening too much and turning over, and allowing the outer surface of the blade member to collide with a fixed object. preferable.

In the nozzle device 10, the blade member is disposed on the distal end side of the shaft body 1a rather than the disc-shaped part 3, is convex toward the distal end, and is at least the same as the outer periphery of the disc-shaped part, and the blade member is opened to the maximum. A tip member 7 is disposed, which has a smaller outer circumference than the outer circumference of the tip. Note that the tip member is a member disposed on the tip side in the traveling direction. Referring to FIGS. 2 and 3(a), a threaded portion is formed on the outer surface of the upper part of the shaft body 1a of the tubular shaft body portion 1, and a nut consisting of a hexagonal nut 8a and a bag nut 8b is formed. By screwing the pair 8 into the threaded portion, a cap-shaped tip member 7 having a dome-shaped outer shape convex in the tip direction is fixed. The tip member is not limited to being fixed by screwing onto the threaded portion of the shaft body, but may be fixed by welding to the tip. It is preferable that the outer periphery of the tip member 7 is equal to or slightly larger than the outer periphery of the disc-shaped portion, and smaller than the outer periphery when the blade members 5a, 5b are opened to the maximum.

In this way, it is preferable to arrange a tip member that is convex toward the tip and has an outer circumference equal to or larger than the outer circumference of the disc-shaped portion and smaller than the outer circumference when the blade member is opened to the maximum. When the nozzle device is advanced within the piping, the outer periphery of the plate or blade member may hit a fixed object, a joint, or a branch pipe within the piping and become caught, thereby hindering the nozzle device's advancement. In the nozzle device of this embodiment, by arranging the tip member as described above, the plate-shaped portion or the like is made less likely to be caught by a fixed object or the like. The shape of the tip member is not particularly limited, and in addition to the cap shape as described above, it may be dome-shaped, or like the arrowhead-shaped tip member 17 with wings 17a, 17b, and 17c in the nozzle device 20 shown in FIG. It may be of any shape.

Next, the operation of such a nozzle device 10 will be explained. Referring to FIG. 2, the nozzle device 10 is connected to a pressure hose 11 that delivers high pressure water. The high-pressure water supplied from the pressure hose 11 is discharged from the drain port 1b through the water passage 1c of the shaft 1a of the tubular shaft portion of the nozzle device 10. A passageway 2c is formed in the nozzle head 2 so that water is injected from an injection port 2b diagonally backward with respect to the direction of movement. As a result, the water discharged from the drain port 1b of the shaft 1a is jetted diagonally backward in the direction of travel from the jet port 2b of the nozzle head 2 rotatably and slidably supported on the shaft 1a. Ru. Then, the nozzle head 2 slides and rotates due to the reaction force of the water jet. When the nozzle head 2 rotates, the plate-shaped portion 3 also rotates about the shaft body 1a. Then, due to the centrifugal force caused by the rotation of the plate-shaped portion 3, the tip sides of the blade members 5a, 5b open away from the support shafts 4a, 4b.

FIG. 4 shows the state in which the blade members 5a and 5b open inside the pipe P when water W is injected from the unillustrated nozzle head 2 of the nozzle device 10 and the plate-shaped portion 3 rotates in the direction of the arrow. FIG. 2 is an explanatory diagram illustrating the situation. As shown in FIGS. 4(a) to 4(c), the blade member 5a rotatably supported by the support shaft 4a at the rear end side is moved by the centrifugal force when the plate-shaped portion 3 rotates in the direction of the arrow. , its tip side opens away from the support shaft 4a. Similarly, the blade member 5b rotatably supported on the support shaft 4b at its rear end side also opens its distal end side away from the support shaft 4b due to the centrifugal force when the plate-shaped portion 3 rotates.

4(a) shows a case where the diameter of the pipe P is relatively small, FIG. 4(b) shows a case where the diameter of the pipe P is relatively large, and FIG. 4(c) shows a case where the diameter of the pipe P is relatively large. FIG. 4C is an explanatory diagram when the diameter is intermediate between the diameter of FIG. 4C and the diameter of FIG. As shown in FIG. 4(a), when the diameter of the pipe P is small, the blade members 5a and 5b are opened slightly to fit the small diameter of the pipe P, and as shown in FIG. When the diameter of the pipe P is large, the blade members 5a and 5b are opened wide to match the large diameter of the pipe P. Further, as shown in FIG. 4(c), when the central axis of the nozzle device 10 is shifted away from the center of the pipe P, the blade member 5a opens wide and the blade member 5b opens small. In order to prevent the blade members 5a, 5b from opening in an inverted manner, if the blade members 5a, 5b open too much, the outer surfaces of the blade members 5a, 5b abut against the stoppers 6a, 6b, thereby restricting rotation. .

According to the nozzle device 10 that operates in this manner, when the nozzle device 10 is advanced within the pipe P, the blade members 5a and 5b collide with a fixed object fixed to the inner wall of the pipe P like a hammer. Remove any stuck substances. At the same time, the water W injected from the injection port 2b is applied to the inner wall of the drain pipe, thereby washing away the broken solid matter.

In addition, in FIG.4(c), the central axis of the nozzle device 10 is shown away from the center of the piping P, and the nozzle device 10 is advancing inside the piping while being offset. In such a case, the blade members 5a, 5b contact the inner wall of the pipe unevenly, and the cleaning effect tends to decrease. In order to prevent the nozzle device 10 from shifting away from the center of the piping P in this way, referring to FIG. The nozzle device 10 is connected to the tubular shaft portion 1 of the nozzle device 10 via a water pipe 9 having no flexibility. Such a water pipe 9 is optionally provided in order to improve the straightness of the nozzle device 10.

By disposing the inflexible water pipe 9 between the tubular shaft portion 1 and the pressure hose, it is possible to suppress the swinging of the tip due to centrifugal force. This makes it difficult for the nozzle device 10 to swing in the pipe to be cleaned, making it easier for the nozzle device 10 to move linearly. easier to relocate to the center of The non-flexible water pipe is preferably a metal pipe with an inner diameter close to the inner diameter of the pressure hose, and its length is not particularly limited, but it should be about 50 to 1000 mm, more preferably about 60 to 200 mm. is preferred.

Above, the nozzle device 10 of a typical embodiment according to the present invention has been described in detail. The nozzle device according to the present invention is not limited to the form like the nozzle device 10, and may be appropriately modified and used without departing from the gist of the present invention. Typical modified examples are shown below.

When the nozzle device of this embodiment is advanced in the pipe, as explained with reference to FIG. 4(c), to suppress the center axis of the nozzle device 10 from shifting away from the center of the pipe P It was explained that a non-flexible water pipe with a length of 50 to 1000 mm would be installed. Another problem that may occur when the nozzle device of this embodiment is advanced in a pipe is that the plate or blade member of the nozzle device may get stuck on the inner wall of the pipe or unevenness at the joint of the pipe. This may hinder your progress.

A nozzle device 30 that solves these problems will be described with reference to FIGS. 6 and 7. Referring to FIG. 6, the nozzle device 30 is convex toward the side, which is perpendicular to the direction of travel, around the non-flexible water pipe 9 of the nozzle device 10, and has a board. Sled members 9a, 9b, 9c, made of metal, for example, and without corners on the sides are provided, having an outer circumference equal to or greater than the outer circumference of the shaped portion 3 and smaller than the outer circumference when the blade member is opened to the maximum. ing. By providing such warped members 9a, 9b, and 9c, it is possible to prevent the plate-like portion 3 and blade members 5a, 5b of the nozzle device from getting caught in stuck objects attached to the inner wall of the pipe or unevenness at the joint of the pipe. It can be suppressed. Specifically, as shown in FIG. 7, when the nozzle device 30 is advanced in the piping to be cleaned, the inflexible water pipe 9 makes it difficult to tilt the vicinity of the tip of the nozzle device 30, thereby reducing flexibility. The sled members 9a, 9b, and 9c arranged on the sides of the water pipe 9, which do not have the water pipe 9, make the vicinity of the tip more difficult to tilt. Thereby, the plate-shaped portion 3 and the blade members 5a, 5b of the nozzle device 30 are less likely to be caught by the adhered material S attached to the inner wall of the pipe P.

The nozzle device according to the present invention described above is used by being disposed at the tip of a high-pressure water washer for removing stuck substances such as rust in various pipes. Next, as an embodiment of a pipe cleaning device in which the nozzle device of this embodiment is connected to the tip of a pressure hose connected to a high-pressure water washer, a vertical drainage pipe cleaner used for cleaning the inside of a vertical drainage pipe will be described. An embodiment of a cleaning device and a vertical drainage pipe cleaning method using the same will be described with reference to FIG.

FIG. 8 is a diagram for explaining a drainage vertical pipe cleaning device 50 in which a nozzle device 10 is connected to the tip of a pressure hose 11 connected to a high-pressure water washer 32, and a drainage vertical pipe cleaning method using the same. It is an explanatory diagram, and also shows an enlarged schematic diagram of the inside of the drainage vertical pipe. In FIG. 8, 11 is a pressure-resistant hose, 15 is a flexible upright support, 10 is a nozzle device, 32 is a high-pressure water washer that supplies high-pressure water to the pressure-resistant hose 11, and 33 is a pressure-resistant hose 11 and a flexible This is a hose reel in which the upright support member 15 is wound and stored.

Moreover, in FIG. 8, 37 is a feed roller that feeds the pressure hose 11 along which the flexible upright support member 15 is placed. Further, 38 is a branch pipe, and the branch pipe 38 includes a main path 38a whose one end is connected to the drainage vertical pipe P1, a branch path 38b branching from the main path 38a, and an air outlet 38c for blowing air toward the branch path 38b. , a water-stop sealing material 38d is provided. A blower 39 is connected to the air outlet 38c and blows air toward the branch path 38b. Further, 40 is a solid-liquid separator that separates solid matter S and water W discharged from the branch pipe 38 into solid and liquid. The solid-liquid separator 40 includes a net 40a for capturing detached solid matter and a drainage pump 40b.

In the drain vertical pipe cleaning device 50 shown in FIG. 8, as shown in FIG. 9, the pressure hose 11 is supported by flexible upright supports 15 (15a, 15b, 15c). A flexible upright support is a linear or tubular member that is flexible enough to be rolled and remains upright when unwound and shaped into a straight line. Due to its flexibility, such a flexible upright support can be transported to a work site in a rolled state, and can remain upright within the drainage pipe. As a structure for supporting a pressure hose with a flexible upright support member, for example, as shown in FIG. 9(a), a flexible rod such as a glass fiber rod or a carbon fiber rod is placed outside the pressure hose 11. A certain flexible upright support member 15a may be fixed along the line, or the flexible upright support member 15b may be housed inside the pressure hose 11 as shown in FIG. As shown in the figure, the pressure-resistant hose 11 is housed in the pipe of a tubular flexible upright support member 15c such as an aluminum three-layer pipe, so that the pressure-resistant hose 11 can be given uprightness in the drainage vertical pipe. This structure can be cited as follows.

As the flexible rod, for example, an elastic rod that is widely used as an entry rod for wiring in buildings is particularly preferably used. As a specific example of the elastic rod, a rod mainly made of fiber-reinforced plastic reinforced with glass fiber, carbon fiber, steel fiber, ceramic fiber, etc. is preferably used. In addition, as a tubular flexible upright support material, for example, an upright flexible tube such as a three-layer aluminum tube in which the inner and outer layers of an aluminum tube are coated with a resin such as polyethylene, or a flexible metal tube (pipe). Examples include tubular members that are flexible enough to be rolled and stand upright when released from the rolled state.

In the drainage vertical pipe cleaning method of this embodiment, first, the drainage vertical pipe P1 is cut at a lower floor of the drainage vertical pipe P1, for example, the first floor. Then, the branch pipe 38 is connected to the opening formed by cutting the vertical drainage pipe P1 using a coupling joint. Then, the nozzle device 10 attached to the tip of the pressure hose 11 is allowed to enter through the opening of the vertical drainage pipe P1.

Then, by sandwiching the pressure hose 11 along with the flexible upright support member 15 between the feed rollers 37 and rotating the feed roller 37, they are moved from the lower floor side to the higher floor side in the drainage vertical pipe P1. send it towards you. From the hose reel 33, the pressure hose 11 along with the flexible upright support member 15 is sequentially paid out.

At this time, the pressure hose 11 let out from the hose reel 33 is sent out from the lower floor side (1F) to the upper floor side (11F) in the drainage vertical pipe P1, and high pressure water is sent from the high pressure water washer 32. , high-pressure water is jetted obliquely backward with respect to the traveling direction from the jetting port 2b of the nozzle head 2 of the nozzle device 10.

As shown in the enlarged schematic view of the vicinity of the nozzle device 10 in FIG. Ru. In addition, the high-pressure water jetted from the nozzle head 2 of the nozzle device 10 washes away the broken adherents S. Then, the nozzle device 10 cleans the inner wall on which the adhered substances S have adhered from the lower floor side to the upper floor side in the drainage vertical pipe P1 while being sent from the lower floor side to the higher floor side in the drainage vertical pipe P1. It's becoming more and more.

Then, the stuck substances S removed from the inner wall of the vertical drainage pipe P1 fall together with the water W inside the vertical drainage pipe P1. When the falling fixed objects S and water W reach the branch point between the main path 38a and the branch path 38b of the branch pipe 38, as shown in FIG. It will be done. The stuck substances S and water W discharged from the branch path 38b are sent to the solid-liquid separator 40, where they are separated into solid and liquid and then processed.

1 Tubular shaft portion 1a Shaft 1b Drain port 1c Water passage 2 Nozzle head 2b Injection port 2c Water passage 2d Insertion hole 3 Plate-shaped portions 4a, 4b Support shafts 5a, 5b Blade members 5c, 5d Holes 6a, 6b Stopper 7, 17 Tip member 8 Nut pair 9 Water pipes 9a, 9b, 9c Sled members 10, 20, 30 Nozzle device 11 Pressure-resistant hose 12 Coupler 15 Flexible upright support member 32 High-pressure water washer 50 Drain vertical pipe cleaning device P Piping P1 Drain vertical pipe S Fixed matter W Water

Claims (8)

a tubular shaft portion connected to a pressure-resistant hose and including a tubular shaft body having a drain port on a side surface of the tube;
a nozzle head that is rotatably and slidably supported on the shaft body, includes at least one jetting port that jets water supplied from the drain port, and rotates by a reaction force of the water jetting;
a plate-shaped portion extending from a side surface of the nozzle head and not interfering with the jetting of the water;
At least one at least one member whose rear end side is rotatably supported by a support shaft provided upright on the plate-shaped portion, and whose front end side opens away from the support shaft due to centrifugal force caused by rotation of the nozzle head. A nozzle device comprising: a blade member; The nozzle device according to claim 1, wherein the disc-shaped portion is disc-shaped, the blade member has a tooth-shaped outer surface, and is housed within the disc-shaped surface in a closed state. Disposed closer to the tip of the shaft body than the disk-shaped portion, is convex toward the tip, and has an outer circumference equal to or greater than the outer circumference of the disk-shaped portion, and is greater than the outer circumference when the blade member is opened to the maximum. The nozzle device according to claim 1 or 2, further comprising a tip member having a small outer circumference. The nozzle device according to any one of claims 1 to 3, further comprising a non-flexible water pipe of 50 to 1000 mm connected between the pressure hose and the tubular shaft body. It is convex laterally around the non- flexible water pipe, and has an outer circumference equal to or greater than the outer circumference of the disk-shaped portion and smaller than the outer circumference when the blade member is opened to the maximum. 5. The nozzle device according to claim 4, further comprising a sled member. A nozzle device according to any one of claims 1 to 5, a pressure-resistant hose that connects the nozzle device to its tip, and a high-pressure water washer that supplies high-pressure water to the pressure-resistant hose. Pipe cleaning equipment. A vertical drainage pipe cleaning device for cleaning vertical drainage pipes of high-rise buildings,
7. The pipe cleaning device of claim 6, further comprising a flexible upright support along the pressure hose. A method for cleaning a vertical drainage pipe of a high-rise building using the pipe cleaning device according to claim 7,
Inserting the nozzle device into an opening on the lower floor side of the vertical drainage pipe;
While jetting high-pressure water supplied from the high-pressure water washer from the jet port of the nozzle head of the nozzle device, the pressure-resistant hose is sent up from the lower floor side toward the upper floor side within the drainage vertical pipe. A vertical drainage pipe cleaning method comprising the steps of:

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