JPH09170251A - Method of cleaning drain pipe in building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning method in which a horizontal branch drain pipe connecting between a vertical drain pipe outside of a room, and a drain unit inside of the room, can be simply cleaned. SOLUTION: A cleaning water feed hose 27 is inserted for cleaning in a horizontal branch drain pipe 5 by a distance corresponding to the length of the horizontal branch pipe 5a which was measured during laying of the horizontal branch pipe 5a, from a cleaning port 21 formed in a connection between the horizontal branch pipe 5a and a vertical drain pipe 6. With this arrangement, a worker can cleaning a drain pipe line without entering a room and without damaging a seal part in a drain unit in the room. Thereby it is possible to enhance the workability as a whole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning drain pipes used in buildings such as middle- and high-rise houses, and more particularly to a one-pipe drain pipe for flowing sewage and miscellaneous waste water into the same drain pipe.

[0002]

2. Description of the Related Art In buildings such as condominiums, hotels and offices, drainage from a drainage device provided in a living room is connected at one end to a horizontal drain pipe and at the other end to a drainage stand. The drainage was carried out by a horizontal drainage branch pipe connected to the pipe. The vertical drainage pipe was placed in the living room, and the horizontal drainage branch pipe was a single pipe.

[0003] Therefore, when the drainage riser deteriorates, it is necessary to replace it. However, in the conventional apparatus, since the drainage riser is arranged in the living room, it is necessary for an operator to enter the living room at the time of replacement. There is. However, when a person actually lives in the living room, the pipe replacement work becomes troublesome. In addition, the side drainage pipes through which kitchen drainage flows are cleaned to prevent clogging, but they are severely degraded and need to be replaced regularly, and replacement work in living rooms is troublesome. In addition, the cost was high.

[0004] The applicant of the present invention has sought to solve such a problem.
Already, a drainage device has been proposed in which the horizontal drainage branch pipe has a double pipe structure so that only the inner pipe can be replaced, and furthermore, the drainage standing pipe is installed outside the room so that replacement work can be easily performed.

[0005]

However, as described above, when cleaning the inside of the horizontal drain branch pipe connecting the outdoor drainage pipe and the indoor drainage device by, for example, a high-pressure water washing method, it is necessary to enter the room. In order to insert the washer from the indoor side, it is necessary to perform complicated work for cleaning for a long time in the room, including disassembly of pipes in the room and reassembly after cleaning. Become.

Therefore, it is conceivable to insert the washer from the outside of the room. In this case, the washer is excessively inserted from the outside of the room, and the tip of the washer breaks through a water sealing portion such as a trap of a drainage device. If this happens, the washing water will spill out of the drainage equipment into the room. Therefore, in order to prevent such a squirting accident from occurring, when inserting the washing machine, for example, insert a length measuring instrument in advance into the horizontal drainage branch pipe, and confirm that the tip has reached the position of the indoor drainage device. It is necessary to measure the length of the lateral drainage branch pipe every time the cleaning work is performed by performing work such as checking into the area, and in this case also, the overall cleaning work is complicated. Cause problems.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has an object to easily clean a horizontal drainage branch pipe connecting an outdoor drainage pipe and an indoor drainage pipe. It is intended to provide a cleaning method.

[0008]

In order to achieve the above-mentioned object, a method for cleaning a drainage pipe of a building according to the present invention is a drainage device installed inside a building and a drainage stand installed outdoors. A method for cleaning a horizontal drainage branch pipe that is connected to a pipe, and was measured at the time of installing the horizontal drainage branch pipe from the cleaning tool insertion port on the outdoor side provided at the connection portion of the horizontal drainage branch pipe to the drainage vertical pipe. The cleaning tool is characterized in that the cleaning tool is inserted into the lateral drainage branch pipe for a distance corresponding to the length of the lateral drainage branch pipe for cleaning.

That is, according to the method of the present invention, the cleaning of the lateral drainage branch pipe is performed by inserting the cleaning tool through the cleaning tool insertion port provided at the connection portion of the horizontal drainage branch pipe to the drainage standing pipe. Done from Moreover, since the length of the lateral drainage branch pipe is measured at the time of piping of the horizontal drainage branch pipe, the insertion length is set according to the measured value, so that the above-described water sealing section is sealed. The cleaning operation can be performed without causing an accidental ejection of cleaning water due to destruction. In this case, it is not necessary to measure the length of the lateral drain branch pipe again every time cleaning is performed, so that the overall workability is improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a plan view of a drainage pipe of a living room 1 of a high-rise apartment house. The living room 1 is separated from an outdoor area 3 by a wall 2. Inside the living room 1, drainage appliances such as a kitchen sink 4a, a toilet bowl 4b, a washbasin 4c, a bathtub 4d, and a laundry room 4e are arranged. The drainage from these drainage appliances is drained through the lateral drainage branch pipes 5a and 5b. It is guided to the standing pipe 6 and discharged.

The lateral drainage branch pipes 5a and 5b distinguish the system. One branch pipe 5a is dedicated to the kitchen sink 4a and has a double pipe structure, and the other branch pipe 5b is a drainage pipe other than the kitchen sink 4a. It consists of a single tube connected to the instrument. These branch pipes 5a, 5
b are substantially parallel to each other on the outdoor section 3 side and penetrate the wall 2 at right angles. The lateral drainage branch pipe 5a having the double pipe structure has one end connected to the kitchen sink 4a and the other end connected to the drainage riser 6 via an elbow joint pipe 7 and a collecting pipe 8, and a collecting pipe 8a.
And are not directly orthogonal. Outer pipe 9 of the branch pipe 5a
Is a rigid tube, and the flexible inner tube 10 is a flexible tube made of heat-resistant synthetic resin (for example, polyethylene pipe, polybutene pipe, etc.).

The collecting end of the horizontal drain branch pipe 5b is connected to the collecting pipe 8
The branch pipe joint portion 11 is connected to the collecting pipe 8 at a right angle. The drainage pipe 6 is located in the outdoor area 3,
As shown in FIG. 1A, it is connected to upper and lower joints 13, 14 of a collecting pipe 8 fixed to each floor slab 12 of the building. As shown in FIG. 3 (b), the elbow joint pipe 7 has a branch pipe joint portion provided in a direction orthogonal to the branch pipe joint portion 11 provided in the collecting pipe 8 in a direction orthogonal to the pipe axis. A bolt 16 is removably attached to the shaft 15 so that one end thereof is L-shaped when viewed in a plan view and the other end opening faces the same direction as the opening of the branch pipe joint 11. The other end opening of the joint pipe 7 is formed as a branch pipe joint 17, and as shown in FIG. 4, the outer pipe 9 of the lateral drainage branch pipe 5a is provided via a cap nut 18 and a ring seal 19. Is connected to an adjusting outer tube 20 which is screwed to one end.

Further, a cleaning port 21 is provided on the upper surface of the bend fitting tube 7.
Is provided as a cleaning tool insertion port, and the opening / closing lid 22 is detachably fixed by bolts 23. After the outer tube 9 is fixed to the pipe, the flexible inner tube 10 is inserted from the cleaning port 21 while measuring its length, and the distal end of the flexible inner tube 10 is removed from the outer tube 9 as shown in FIG. The protruding part is connected to the elbow pipe 24 immediately below the water sealing trap (not shown) of the kitchen sink 4a. On the other hand, the rear end of the flexible inner tube 10 is, as shown in FIG.
Is fixed to the inner surface of the branch pipe joint 17 in a watertight manner via a ring-shaped rubber seal 25, and the length measured when the flexible inner pipe 10 is inserted is displayed on the upper surface of the opening / closing lid 22 (for example, 26). 8m to the trap, 8m insertion length, etc.).

The length up to the trap can be measured by measuring the length of the outer pipe 9 at the time of piping work, in addition to the above-described measuring method. According to the above configuration, first, when cleaning the horizontal drain branch pipes 5a and 5b, as shown in FIGS. 1 (a) and 1 (b), the opening / closing lid 22 is removed and the cleaning port 21 is opened.
A cleaning water guide hose 27 as a cleaning tool is inserted into the branch pipes 5a and 5b from 21 and a nozzle attached to the tip of the hose 27.
High-pressure water 29 is ejected from 28 in a direction opposite to the insertion direction to separate and remove attached matter or accumulated matter on the inner surface of the pipe. At this time, the cleaning drainage and the mixed drainage of solids such as deposits flow in the horizontal drain branch pipes 5a and 5b toward the collecting pipe 8, and the drainage pipe 6
Flow down through.

In particular, when cleaning the inside of the flexible inner pipe 10 of the horizontal drain branch pipe 5a, the length of the flexible inner pipe 10 is displayed on the upper surface of the opening / closing lid 22.
26, the insertion is performed while checking the insertion length of the water guide hose 27, and when the length reaches the display 26, when the insertion of the water guide hose 27 is stopped, the nozzle 28 is located at the elbow pipe 24. As a result, the trap is not broken and the drainage device 4a is not reached, and therefore, the jetting of the washing water does not occur.

Further, since the cleaning water guide hose 27 is inserted in a direction perpendicular to the wall 2, the hose 27 can be easily inserted. When cleaning the horizontal drain branch pipe 5b, the water supply hose 27 is connected to the cleaning port 21 due to the configuration of the piping.
Since it is difficult to insert the drainage devices 4b to 4e from above, an opening / closing lid is provided on the floor of the living room, and an auxiliary cleaning port or the like provided in the middle of the branch pipe 5b is used. In this case, the length from the auxiliary cleaning port to the water sealing portion of each of the drainage devices 4b to 4e can be known by eye measurement or the like, and the nozzle 28 does not break through the water sealing portion.

On the other hand, when cleaning the drainage vertical pipe 6, the cleaning water guide hose 27 is inserted from the cleaning port 21 in the same manner as described above.
You can work outdoors from the upper floor to the lower floor.
A plurality of branch pipe joints 17 of the elbow joint pipe 7 can be provided side by side, and the display 26 is provided on an easily visible place other than the open / close lid 22, for example, on a building wall (including a door) near the connection. it can. Further, in the above description, the lateral drainage branch pipe 5a has a double pipe structure. However, a branch pipe not adopting the double pipe structure can be easily cleaned from the outdoor side by the same method. it can.

[0018]

As described above, according to the cleaning method of the present invention, the cleaning of the horizontal drainage branch pipe is performed through the cleaning tool insertion port provided at the connection portion of the horizontal drainage branch pipe to the drainage vertical pipe. It is performed from the outdoor side by inserting the tool, and the insertion length is determined according to this measurement value because the length of the lateral drainage branch pipe is measured at the time of piping construction of this horizontal drainage branch pipe. By performing the setting, the cleaning operation can be performed without causing the cleaning water to be spouted in the room due to the destruction of the water sealing portion as described above. In this case, it is not necessary to measure the length of the lateral drainage branch pipe every time cleaning is performed, so that the overall workability is improved.

[Brief description of the drawings]

FIGS. 1A and 1B show a cleaning operation procedure of the present invention, wherein FIG. 1A is a plan view of a main part, and FIG. 1B is a side view of a main part.

FIG. 2 is a plan view showing an entire configuration of a drainage pipe for performing the above-described cleaning operation.

FIG. 3 shows a collecting pipe and an elbow joint pipe interposed in a drainage riser in the drainage pipe, and FIG.
(a) is a side view, and (b) is a plan view.

FIG. 4 is an enlarged sectional view of a joint between the elbow joint pipe and a lateral drainage branch pipe.

[Explanation of symbols]

 1 Living room 3 Outdoor area 4a Kitchen sink (drainage equipment) 5a Horizontal drainage branch pipe 6 Drainage riser 21 Cleaning mouth (cleaning tool insertion port) 22 Openable lid 26 Display 27 Cleaning water guide hose (cleaning tool)

Claims (1)

[Claims] 1. A method of cleaning a horizontal drainage branch pipe connecting a drainage device disposed in a room of a building and a drainage vertical pipe installed outside the room, comprising: From the cleaning tool insertion port on the outdoor side provided at the connection part, insert the cleaning tool into the horizontal drainage branch pipe for a distance corresponding to the length of this horizontal drainage branch pipe measured at the time of piping of the horizontal drainage branch pipe, and clean it. A method for cleaning a drainage pipe of a building.