JP2022166707A - Drain pipe cleaning method - Google Patents

Abstract

To provide a drain pipe cleaning method capable of reliably preventing backflow of muddy water due to cleaning of a drain pipe particularly for an individual house on a lower floor.SOLUTION: A drain pipe cleaning method comprises: a first step of inserting a vertical pipe cleaning nozzle 5 attached to a water hose 6 from the top of a vertical pipe 2 into the lower bottom of the vertical pipe without jetting high-pressure water, a second step in which, simultaneously with or before or after the execution of the first step, a horizontal pipe cleaning nozzle 7 attached to a water hose 8 from the downstream side of a horizontal pipe 3 is advanced toward the lower bottom of the vertical pipe while jetting high-pressure water, a third step of cleaning the inside of the vertical pipe by pulling up the vertical pipe cleaning nozzle 5 located at the lower bottom of the vertical pipe while jetting high-pressure water inside the vertical pipe, and a fourth step of moving the horizontal pipe cleaning nozzle 7, during the execution of the third step, from the lower bottom of the vertical pipe toward the downstream side of the horizontal pipe while jetting high-pressure water from the horizontal pipe cleaning nozzle 7.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a drainage pipe cleaning method for removing solid matter such as food residue and grease adhering to the inside of a drainage pipe laid in an apartment building or the like by using a high-pressure water injection nozzle.

From the viewpoint of effective use of land, a large number of high-rise apartment buildings are being constructed in urban areas and their suburbs. The domestic wastewater (filthy water) discharged from this building-type collective housing flows from a dedicated drainage pipe laid in each house through a shared drainage pipe (also called vertical pipe) laid inside the building. The waste is discharged into an outdoor horizontal pipe, thereby maintaining a good living environment.

By the way, since this domestic wastewater contains a large amount of food residues, oils and fats, etc., these residues, oils and fats, etc. adhere to the pipe walls of common drain pipes (vertical pipes and horizontal pipes) in the form of solid matter. , It may block the drain pipe after a considerable period of time. In addition, this solid gives off a foul odor, which may deteriorate the living environment. In order to prevent such deterioration of the living environment and maintain a good living environment, it is necessary to clean the common drainpipe at regular intervals.

Conventionally, a high-pressure water jet cleaning method has been adopted as one method for cleaning and removing solid matter adhering to the inside of drain pipes. In this high-pressure water jet cleaning method, high-pressure water is jetted from a cleaning nozzle attached to the tip of a water supply hose toward solid matter adhering to the inside of a drain pipe to remove the solid matter.

For this purpose, for example, a water supply hose having a cleaning nozzle attached to its tip is inserted from the upper end opening of a vertical pipe provided on the roof of a building to clean the drain pipe.
In this case, insert the washing nozzle from the upper end opening of the vertical pipe on the roof of the building, extend the water hose without injecting high-pressure water, and extend the washing nozzle at the tip to the above-described horizontal pipe at the bottom of the vertical pipe. take down. In this state, the inside of the drain pipe can be washed by sequentially pulling up the water supply hose while injecting high-pressure water from the washing nozzle.

According to the drain pipe cleaning method described above, a great deal of labor is required to pull up the water hose. As a result, the cleaning work is quite labor intensive.
Therefore, the present applicant has a drum that is rotated at a constant speed by a prime mover such as a motor. A hose pulling device that can be pulled up easily and a method for cleaning a drain pipe using the device have been proposed, which is disclosed in Patent Document 1.

Japanese Patent No. 3694243

By the way, when the inside of the standpipe is washed by using the high-pressure water injection nozzle, the solid matter peeled off from the standpipe due to the washing of the inside of the standpipe is removed from the above-described horizontal pipe connected to the lower bottom of the standpipe. There is a problem that it accumulates at the connecting part (rising part of the standpipe) with the downpipe and clogs the inside of the drainpipe. If the cleaning of the standpipe is continued in this state, the dirty water containing the above-described solid matter in the washing discharge discharged from the washing nozzle accumulates in the standpipe, and especially the dedicated drainage pipes laid in individual houses on the lower floors of buildings. The above-described sewage water flows back through the pipe, and the overflowing sewage water contaminates the interior of the room.

The present invention is intended to clean the standing pipes for drainage laid in buildings such as collective housing shown in the above examples, and the horizontal pipes following them, individually using dedicated high-pressure water injection nozzles. By considering the operation timing of the high-pressure water nozzle for vertical pipe cleaning and the high-pressure water nozzle for horizontal pipe cleaning, it is possible to ensure that muddy water does not flow back into individual houses, especially on the lower floors. The main problem is to provide a method for cleaning drain pipes that can prevent such accidents.

The drainage pipe cleaning method according to the present invention, which has been devised to solve the above-described problems, consists of a standpipe laid vertically in a building and a horizontal pull pipe communicating with the lower bottom of the standpipe. A drainage pipe cleaning method for cleaning the inside of a drainage pipe consisting of a pipe,
A high-pressure water injection nozzle for cleaning the standpipe attached to the tip of the water hose is inserted from the top of the standpipe, and the high-pressure water injection nozzle for cleaning the standpipe is operated without injecting high-pressure water. a first step of inserting the water hose to the bottom of the
Simultaneously with or before or after the execution of the first step, a high-pressure water injection nozzle for cleaning the horizontal pipe is inserted from the downstream side of the horizontal pipe and attached to the tip of the water hose, and the horizontal pipe is washed. a second step of cleaning the inside of the horizontal pipe by advancing the horizontal pipe cleaning high-pressure water injection nozzle toward the lower bottom portion of the standpipe while injecting high-pressure water from the cleaning high-pressure water injection nozzle;
In the first step, while injecting high-pressure water from a high-pressure water injection nozzle for cleaning a vertical pipe positioned at the lower bottom of the vertical pipe, the high-pressure water injection nozzle for cleaning the vertical pipe is pulled up in the vertical pipe. a third step of cleaning the inside of the pipe;
During the execution of the third step, the horizontal pipe cleaning high pressure water injection nozzle is ejected from the bottom of the vertical pipe while high pressure water is being injected from the horizontal pipe cleaning high pressure water injection nozzle. and a fourth step in which the operation of moving toward the downstream side is performed once or a plurality of times by reciprocating the nozzle.

In this case, the high-pressure water injection nozzle for cleaning the standpipe is provided with a rotor in the nozzle body that is rotationally driven by reaction to the injection of high-pressure water, and the high-pressure water is sent through the water hose as the rotor rotates. It is desirable to use a rotating nozzle that jets water while rotating it in the circumferential direction of the nozzle body.

During the third step of washing the inside of the standpipe, the rotating nozzle preferably rotates the rotor at a speed between 90 rpm and 5000rpm to wash the inside of the standpipe.

On the other hand, the horizontal pipe cleaning high-pressure water injection nozzle has a nozzle opening for injecting high-pressure water obliquely rearward when viewed from the water supply hose side, and the high-pressure water sent through the water supply hose is injected backward. The second step is executed by the propulsive force generated by the second step, in which the inside of the horizontal pipe is moved from the downstream side toward the lower bottom portion of the vertical pipe while cleaning the inside of the pipe.

Further, in the drainpipe cleaning method according to the present invention, there are provided a frame, a drum arranged on the upper part of the frame and rotatably supported by a shaft, and a drum mounted on the frame and rotating forward and backward with respect to the drum. A hose hoist is provided having a prime mover for providing a drive force of . In the third step of washing the inside of the standpipe, the water hose of the high pressure water injection nozzle for washing the standpipe is circulated around the drum of the hose pulling device, and the high pressure water injection nozzle for washing the standpipe is erected. A pulling operation is performed in the tube.

In this case, it is preferable that the hose lifting device lifts the vertical pipe cleaning high-pressure water injection nozzle at a constant speed in the range of 20 mm/second to 300 mm/second in the vertical pipe.

According to the drainage pipe cleaning method according to the present invention, in the first step, the high-pressure water injection nozzle for cleaning the vertical pipe is lowered to the bottom of the vertical pipe without injecting high-pressure water. In the second step, while injecting high-pressure water from the downstream side of the horizontal pipe, the horizontal pipe cleaning high-pressure water injection nozzle advances toward the lower bottom portion of the standpipe, thereby first removing the horizontal pipe. Washing inside the tube is carried out.
Subsequently, in the third step, while injecting high-pressure water from the high-pressure water injection nozzle for cleaning the standpipe, the nozzle is lifted up inside the standpipe, so that the inside of the standpipe is cleaned. While injecting high-pressure water from the high-pressure water injection nozzle for washing the down pipe, the operation of moving the high-pressure water injection nozzle for washing the side pipe from the lower bottom portion of the vertical pipe toward the downstream side of the side pipe is one. This is done by reciprocating the nozzle once or multiple times.

Therefore, when the inside of the standpipe is cleaned in the third step, the solids and the like that are separated from the standpipe and dropped to the bottom of the standpipe are sprayed with high-pressure water and directed toward the downstream side of the sidepipe. Along with the movement of the high pressure water injection nozzle for cleaning, the water can be quickly discharged to a public sewage pipe or the like through the horizontal pipe whose inside has already been washed.
The moving operation of the high-pressure water injection nozzle for cleaning the horizontal pipe from the lower bottom of the vertical pipe to the downstream side of the horizontal pipe is performed by reciprocating the nozzle a plurality of times as required. It is possible to effectively remove solids and the like that tend to accumulate in the lower bottom portion (rising portion) through the horizontal draw pipe. Therefore, it is possible to reliably prevent the problem of backflow of sewage into individual houses, particularly in the lower floors of the building, and the overflow of sewage to contaminate the rooms.

In this case, as the high-pressure water injection nozzle for horizontal pipe cleaning, by using a cleaning nozzle having a nozzle opening that injects high-pressure water obliquely backward when viewed from the water supply hose side, the propulsive force of the rearward injection of high-pressure water The inside of the laterally drawn pipe can be cleaned while moving forward in the laterally drawn pipe.
When the nozzle is pulled back from the lower bottom of the standpipe toward the downstream side of the horizontal drawpipe, the solids, etc., which tend to accumulate on the lower bottom of the standpipe, are removed by the high-pressure water jetted backward. It can flow out more efficiently toward the downstream side of the lateral pipe.

It is a schematic diagram explaining the cleaning construction method of the drainage pipe which concerns on this invention. It is the front view which showed the example of the hose pulling-up apparatus used for this cleaning construction method. It is also a side view. Fig. 3 is a perspective view showing a cross-sectional view of the upper half of the vertical pipe cleaning high-pressure water injection nozzle; FIG. 5 is a perspective view of a nozzle opening portion of the injection nozzle shown in FIG. 4 as viewed from the tip end side; Fig. 2 is a perspective side view showing the nozzle opening portion of the high-pressure water injection nozzle for horizontal pipe cleaning.

A drainpipe cleaning method according to the present invention will be described with reference to the drawings.
FIG. 1 schematically shows an example of laying of drain pipes in a building-type collective housing and an example of implementing a drain pipe cleaning method using a high-pressure water jet cleaning method.
A . . . X shown in FIG. 1 indicate individual homes on each floor of the collective housing. It is discharged to dedicated drainage pipes 1a . Then, it is discharged toward a public sewage pipe or the like (not shown).

The upper part of the above-mentioned standpipe 2 is generally opened as a cleaning opening 2a of the standpipe on the roof of an apartment house, and the lower part of the standpipe 2 is connected to the horizontal drawpipe 3 in a state substantially perpendicular to it. ing. The connecting portion between the standpipe 2 and the lateral drawpipe 3 is also called a rising portion 2b.
A cleaning port 4 for the horizontal pipe is laid in the vicinity of the connecting portion to the public sewage pipe on the downstream side of the horizontal pipe 3 on the ground.

In order to carry out the cleaning method of the drain pipe according to the present invention for cleaning the common drain pipe consisting of the above-mentioned standpipe 2 and horizontal pull pipe 3, as an example, as shown in FIG. A high-pressure water injection nozzle for cleaning the standing pipe (hereinafter also simply referred to as a cleaning nozzle for standing pipe) 5 attached to the tip of a water hose 6 is inserted into the standing pipe 2 from the cleaning port 2a.
Also, from the horizontal pipe cleaning port 4 laid downstream of the horizontal pipe on the ground, a high pressure water injection nozzle for horizontal pipe cleaning attached to the tip of the water hose 8 (hereinafter simply referred to as horizontal pipe Also called a cleaning nozzle for tubes.) 7 is inserted into the transversely drawn tube 3 .

A hose hoisting device 11 is arranged near the cleaning opening 2a of the standpipe on the roof of the collective housing, and the inside of the standpipe 2 is washed by the washing nozzle 5 for the standpipe using this hose hoisting device 11. Member P1 is also placed.
On the other hand, a cleaning operator P2 who cleans the inside of the horizontal pipe 3 with the horizontal pipe cleaning nozzle 7 is arranged near the horizontal pipe cleaning opening 4 on the ground.

2 and 3 show a preferred example of the hose lifting device 11 arranged near the cleaning opening 2a on the top of the standpipe 2. FIG.
The hose pulling device 11 includes a frame 12, a drum unit 13 having a drum 13a arranged on the upper part of the frame and rotatably supported by a shaft, and a drum unit 13 mounted on the frame 12 and rotating normally with respect to the drum 13a. and a prime mover 14 that provides drive power for reverse rotation.

The frame 12 that constitutes the hose pulling device 11 has a pair of support members 12a made of steel such as angle members erected on the front and rear sides on the right side in FIG. is erected on the left side so as to face the pair of support members 12a.
Connecting members 12c and 12d made of angle members that connect horizontally are attached between the pair of support members 12a and the opposing drum frame 12b to form a quadrilateral frame shape. .

A rectangular base frame 12e is coupled to the lower ends of the pair of support members 12a and the drum frame 12b to form a three-dimensional frame 12. As shown in FIG.
Casters 12f with brakes are attached to the corners on the bottom side of the rectangular base frame 12e arranged on the lower bottom of the frame 12 described above. As a result, the frame 12, that is, the entire hose pulling device 11 can be transported using the casters 12f.

The drum frame 12 b is elongated in the vertical direction and protrudes upward from the frame 12 , and this protrusion functions as a support for the drum unit 13 . That is, the drum unit 13 is attached to a drum frame 12b projecting upward from the frame 12 described above. The drum unit 13 is provided with a drum 13a around which a water hose 6 having a standing pipe cleaning nozzle 5 attached to the tip thereof is wound.

On both sides of the drum 13a in the axial direction, a pair of flanges 13b having a diameter larger than that of the drum 13a are arranged to face each other. function as a detachment prevention.
The drum 13a is attached to a rotating shaft 13c arranged horizontally in the upper part of the drum frame 12b, and a sprocket 13d is attached to the rotating shaft 13c inside the drum frame 12b.

A geared motor 14 as a prime mover is mounted on a base frame 12e arranged at the bottom of the frame 12. As shown in FIG. A drive shaft of the geared motor 14 is positioned below the drum frame 12b, and a motor-side sprocket 14a is attached to the drive shaft of the geared motor 14 inside the drum frame 12b.
Between the motor-side sprocket 14a and the upper drum-side sprocket 13d, a chain (not shown) is stretched within the drum frame 12b. 14 provides driving force for forward and reverse rotation.

A power distribution box 15 is attached to the upper portion of the motor 14, and the power distribution box 15 is provided with connection terminals such as a foot switch (not shown). The cleaning operator P1 can use the foot switch to turn on/off the drive current to the motor 14, rotate the motor 14 forward/backward, control the rotational speed of the motor 14, and the like.

4 and 5 show an example of a vertical pipe cleaning nozzle 5 that can be suitably used in the drainage pipe cleaning method according to the present invention. FIG. FIG. 5 is a perspective view of the nozzle opening portion of the standing pipe cleaning nozzle 5 viewed from the tip side.
The standing pipe cleaning nozzle 5 is composed of a nozzle body 5A and a rotor 5B, and the nozzle body 5A and the rotor 5B are each made of a metal material.
A cylindrical central shaft 5c is formed between a head portion 5a on the front end side and a hose connection port 5b on the rear end side of the nozzle body 5A. The rotor 5B is attached so as to be axially rotatable. A tip portion of a water supply hose 6 is attached to the hose connection port 5b via a metal fitting (not shown).

A water supply space 5d for high-pressure water supplied from a hose connection port 5b is formed in the nozzle body 5A along the axis of the central shaft 5c. High-pressure water is supplied to an annular water supply passage 5e formed along.
The rotor 5B is provided with a nozzle opening 5g that communicates with the annular water supply passage 5e. As shown in FIG. are formed in a direction perpendicular to each other.

As shown in FIG. 5, the two nozzle openings 5g are symmetrical with respect to the rotational axis of the rotor 5B, and the high-pressure water outlets are slightly offset in the same direction. It is Therefore, the rotor 5B is rotationally driven in the direction indicated by the arrow R in FIG.
As a result, the standing pipe cleaning nozzle 5 shown in the figure constitutes a rotating nozzle that jets high-pressure water sent via the water hose 6 while rotating in the circumferential direction of the nozzle main body.

Next, FIG. 6 shows an example of a horizontal pipe cleaning nozzle 7 that can be suitably used in the drainage pipe cleaning method according to the present invention, with the nozzle opening portion seen through.
The horizontal pipe cleaning nozzle 7 is made of a metal material, and a head portion 7a on the tip side thereof is formed in a substantially hemispherical shape. The tip of the water supply hose 8 is attached to the hose connection port 7b on the rear end side via a metal fitting (not shown).

A storage space 7c for high-pressure water supplied from a hose connection port 7b is formed in the central portion of the horizontal pipe cleaning nozzle 7, and a nozzle opening 7d is formed in communication with the storage space 7c. 7 d of this nozzle opening is formed so that the high-pressure water sent through the water supply hose 8 may be jetted diagonally rearward when viewed from the hose 8 side.

Note that, in the horizontal pipe cleaning nozzle 7 shown in this example, there are six nozzle openings that jet obliquely rearward at an inclination angle of about 45 degrees with respect to the axial center of the horizontal pipe cleaning nozzle 7 . 7d are provided at approximately equal intervals along the circumferential direction.
According to this cleaning nozzle 7 for horizontal pipes, it is possible to move forward while cleaning the inside of the horizontal pipe 3 described with reference to FIG.

Hereinafter, the method for cleaning a drainage pipe according to the present invention using the hose pulling device 11, the vertical pipe cleaning nozzle 5, and the horizontal pipe cleaning nozzle 7 will be described step by step mainly with reference to FIG.
First, in the first step, the standpipe cleaning nozzle 5 attached to the tip of the water supply hose 6 is inserted from the top of the standpipe 2, that is, the standpipe cleaning opening 2a in the example shown in FIG. The water supply hose 6 is inserted into the cleaning nozzle 5 until it reaches the lower bottom portion (rising portion 2b) of the standpipe 2 without injecting high-pressure water.
In this case, the drum 13a of the hose hoisting device 11 is driven to rotate while the water supply hose 6 is circulated around the drum 13a by, for example, one or two turns. As a result, the water supply hose 6 can be drawn out through the drum 13a, and the standpipe cleaning nozzle 5 can be lowered to the bottom portion (rising portion 2b) of the standpipe 2 at a constant speed.

The second step is performed simultaneously with, or before or after, the first step described above. In this second step, the horizontal pipe cleaning nozzle 7 attached to the tip of the water hose 8 is inserted from the downstream side of the horizontal pipe 3, i.e., the horizontal pipe cleaning port 4 shown in FIG. While spraying high-pressure water from the pipe cleaning nozzle 7, the horizontal pipe cleaning nozzle 7 is advanced toward the lower bottom portion (rising portion 2b) of the standpipe 2 to wash the inside of the horizontal pipe 7. - 特許庁

In this case, as described above, the horizontal pipe cleaning nozzle 7 jets high-pressure water obliquely rearward when viewed from the water supply hose 8 side. 7 can move forward while washing the inside of the lateral pipe 3 by jetting high-pressure water.
When the water hose 8 is drawn out as the horizontal pipe cleaning nozzle 7 advances, the horizontal pipe cleaning nozzle 7 advances in the horizontal pipe 3 by giving reciprocating axial rotation to the water hose 8 . can be given a reciprocating axial rotation in the same way.

As a result, it is possible to impart a rotation action to the injection shaft of the high-pressure water that is injected obliquely rearward from the horizontal pipe cleaning nozzle 7 . Therefore, it is possible to apply the cleaning effect by jetting high-pressure water to the entire circumference of the inner peripheral surface of the horizontal pipe 3, and in the above-described second step, the inside of the horizontal pipe 3 is washed first.

In the third step, the upright pipe cleaning nozzle 5 is lowered to the lower bottom portion (rising portion 2b) of the upright pipe 2 in the above-described first step, while jetting high-pressure water. An operation of cleaning the inside of the standpipe 2 is performed by pulling it up inside.
In this case, the drum 13a of the hose pulling device 11 is driven to rotate in a direction opposite to that in the first step. As a result, the water supply hose 6 and the standing pipe cleaning nozzle 5 at the tip of the hose can be pulled up using the rotation of the drum 13a. Therefore, the burden on the cleaning worker P1 can be greatly reduced.

As described above, the standing pipe washing nozzle 5 employs a rotating nozzle in which the rotor 5B rotates by spraying washing water from the nozzle opening 5g. The water pressure applied to the standing pipe washing nozzle 5 is adjusted so that it can be rotated within the range.
In addition, it is desirable that the standpipe cleaning nozzle 5 is pulled up in the standpipe 2 at a constant speed in the range of 20 mm/sec to 300 mm/sec by the hose pulling device 11 described above in order to obtain a higher cleaning effect.
By combining the rotation speed of the rotor 5B and the lifting speed of the vertical pipe cleaning nozzle 5, it is possible to achieve a cleaning effect that can further reduce the degree of spiral solids left behind in the pipe. It can also contribute to shortening.

In the fourth step, during execution of the above-described third step, while jetting high-pressure water from the horizontal pipe cleaning nozzle 7, the horizontal pipe cleaning nozzle 7 is moved from the lower bottom portion (rising portion 2b) of the vertical pipe. , the operation of moving toward the downstream side of the transverse pipe 3 is performed once or a plurality of times by reciprocating the cleaning nozzle 7 .
The horizontal pipe cleaning nozzle 7 is provided with a nozzle opening 7d for injecting high-pressure water obliquely rearward when viewed from the water supply hose 8 side. (pulling back the water supply hose 8 to the horizontal pipe cleaning port 4 side), the washing water jetted backward (downstream side) from the nozzle opening 7d separates from the standpipe 2 Washing water containing solids and the like can be effectively flushed downstream of the lateral pipe 3 .

In this case, according to the amount of cleaning wastewater containing solids and the like accumulated in the rising portion 2d of the standpipe 2 by the cleaning of the standpipe 2 in the above-described third step, the horizontal pulling pipe cleaning nozzle 7 is slowly pulled back ( 1st mode), or an operation of rapidly pulling back the cleaning nozzle 7 for horizontal pipes (2nd mode), and an operation of pulling back a plurality of times by reciprocating the nozzle 7 (3rd mode) are selectively performed.

The cleaning operator P2 in the vicinity of the horizontal pipe cleaning opening 4 can hear the amount of the cleaning wastewater containing solids and the like accumulated in the rising portion 2d by the change in the sound. , the pullback operation of the first to third modes described above is appropriately selected and executed.
By carrying out the fourth step, the sewage containing the solid matter accumulates in the vertical pipe, and in particular, it prevents the sewage from flowing back through the dedicated drainage pipe laid in the lower floor of the building. can be prevented.

By carrying out the first to fourth steps described above, the main steps in the drainage pipe cleaning method according to the present invention are completed. Accordingly, it is desirable to continue the pull-back operation of the horizontal pipe cleaning nozzle 7 performed in the fourth step until the washing drainage flows out of the horizontal pipe 3 .
At the time when the cleaning process of the standpipe 2 in the third step is finished, the dirtiness of the standpipe 2 after cleaning can be grasped from the dirtiness of the water supply hose 6 pulled up from the standpipe 2. Therefore, when it is determined that the standpipe 2 has been insufficiently cleaned due to the degree of contamination of the water supply hose 6, it is desirable to repeat the drainage pipe cleaning method including the first to fourth steps described above.

As is clear from the above description, according to the drainage pipe cleaning method according to the present invention, the above-described third step and the fourth step are performed at the same time, so that the solid matter peeled off from the standpipe 2 etc. can be effectively washed away downstream of the lateral pipe 3.
As a result, it is possible to reliably prevent the problem of sewage flowing back into individual houses in the lower floors of the building, and overflowing sewage that contaminates the rooms. can be done.

In the illustrated embodiment, a fixed nozzle having a nozzle opening 7d for injecting high-pressure water obliquely rearward when viewed from the water supply hose side is used as the horizontal pipe cleaning nozzle 7. FIG. However, the horizontal pipe cleaning nozzle 7 may be a rotary nozzle as shown in FIGS. 4 and 5 instead of the fixed nozzle.
As a rotating nozzle used for this horizontal pipe cleaning nozzle 7, as an example, a nozzle opening 5g in a rotor 5B shown in FIGS. 4 and 5 is provided obliquely rearward. Then, as shown in FIG. 5, the high-pressure water outlets of the nozzle opening 5g are symmetrical with respect to the rotation axis of the rotor 5B, and are slightly offset in the same direction. It can be suitably used as a rotary nozzle for industrial use.

1a...1x Dedicated drainage pipe 2 Vertical pipe 2a Vertical pipe cleaning port 2b Rising portion (bottom portion of vertical pipe)
3 horizontal pipe 4 horizontal pipe cleaning port 5 high-pressure water injection nozzle for vertical pipe cleaning (vertical pipe cleaning nozzle)
5A Nozzle body 5B Rotor 5c Central shaft 5g Nozzle opening 6 Water supply hose (for vertical pipe)
7 High-pressure water injection nozzle for cleaning horizontal pipes (cleaning nozzle for horizontal pipes)
7d Nozzle opening 8 Water supply hose (for horizontal pipe)
REFERENCE SIGNS LIST 11 hose pulling device 12 frame 13 drum unit 13a drum 13b flange 14 prime mover (geared motor)
15 Power distribution box A...X Individual home P1, P2 Cleaning worker

Claims (6)

A drainage pipe cleaning method for cleaning the inside of a drainage pipe consisting of a vertical pipe laid in a building and a horizontally laid horizontal pipe communicating with the lower base of the vertical pipe,
A high-pressure water injection nozzle for cleaning the standpipe attached to the tip of the water hose is inserted from the top of the standpipe, and the high-pressure water injection nozzle for cleaning the standpipe is operated without injecting high-pressure water. a first step of inserting the water hose to the bottom of the
Simultaneously with or before or after the execution of the first step, a high-pressure water injection nozzle for cleaning the horizontal pipe is inserted from the downstream side of the horizontal pipe and attached to the tip of the water hose, and the horizontal pipe is washed. a second step of cleaning the inside of the horizontal pipe by advancing the horizontal pipe cleaning high-pressure water injection nozzle toward the lower bottom portion of the vertical pipe while injecting high-pressure water from the horizontal pipe cleaning high-pressure water injection nozzle;
In the first step, while injecting high-pressure water from a high-pressure water injection nozzle for cleaning a vertical pipe positioned at the lower bottom of the vertical pipe, the high-pressure water injection nozzle for cleaning the vertical pipe is pulled up in the vertical pipe. a third step of cleaning the inside of the pipe;
During the execution of the third step, the horizontal pipe cleaning high pressure water injection nozzle is ejected from the bottom of the vertical pipe while high pressure water is being injected from the horizontal pipe cleaning high pressure water injection nozzle. a fourth step in which the operation of moving toward the downstream side is performed once or multiple times by reciprocating the nozzle;
A drainage pipe cleaning method characterized by performing The vertical pipe cleaning high-pressure water injection nozzle has a rotor in the nozzle body that is rotationally driven by reaction to the high-pressure water injection. 2. The method for cleaning a drainpipe according to claim 1, wherein a rotary nozzle is used to spray while rotating the nozzle body in the circumferential direction. 3. The drainage pipe cleaning method according to claim 2, wherein the rotor of the rotary nozzle is rotated within a range of 90 rpm to 5000 rpm during the execution of the third step of cleaning the inside of the stand pipe. The horizontal pipe cleaning high-pressure water injection nozzle has a nozzle opening for injecting high-pressure water obliquely backward when viewed from the water supply hose side, and the high-pressure water sent through the water supply hose is propelled by backward injection. 4. The second step is carried out by applying a force to move the inside of the horizontal pipe from the downstream side toward the lower bottom portion of the vertical pipe while washing the inside of the pipe. The method for cleaning the drainage pipe described in . A hose pulling device comprising a frame, a drum arranged on the upper part of said frame and rotatably supported by a shaft, and a prime mover mounted on said frame to apply forward and reverse driving force to said drum. prepared,
In the third step of cleaning the inside of the standpipe, the water hose of the high pressure water injection nozzle for cleaning the standpipe is circulated around the drum of the hose pulling device, and the highpressure water injection nozzle for cleaning the standpipe is placed inside the standpipe. 5. The method for cleaning a drainage pipe according to any one of claims 1 to 4, wherein the pipe is pulled up. 6. The drainage pipe according to claim 5, wherein the hose lifting device lifts the vertical pipe cleaning high-pressure water injection nozzle at a constant speed in the range of 20 mm/second to 300 mm/second in the vertical pipe. cleaning method.

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