JP2020063565A - Cleaning method of drain pipe - Google Patents

Abstract

To provide a cleaning method of a drain pipe allowing easy cleaning of the inside of the drain pipe.SOLUTION: A cleaning method of the inside of a siphon drain pipe 44 includes: a first step of attaching a guide member 92 constituted by including a cylindrical base part 92A supported by the siphon drain pipe 44 and covering the periphery of a cleaning port 68 formed to the siphon drain pipe 44, and a guide part 92B integrally provided at one end side in the axial direction of the base part 92A and guiding a hose 96 having a cleaning nozzle 94 inserted into the cleaning port 68 in the direction tilted in the predetermined direction in relation to the axial direction of the base part 92A; and a second step of inserting the cleaning nozzle 94 into the siphon drain pipe 44 from the cleaning port 68 through the inside of the guide member 92.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a drainage pipe cleaning method.

  In Patent Document 1, a drainage pipe (drainage pipe) is connected in advance with a joint having an opening that can be closed by a lid, and when cleaning the inside of the drainage pipe, the lid is removed and the inside of the drainage pipe is opened. A drain pipe cleaning method for inserting a cleaning nozzle is disclosed.

  Further, Patent Document 1 discloses a configuration in which a guide pipe that covers the periphery of the opening is attached in order to prevent water for cleaning from splashing outside from the opening of the joint.

JP, 2008-025073, A

  However, the guide tube described in the above prior art has a cylindrical shape whose axial direction is the direction orthogonal to the axial direction of the discharge pipe. For this reason, if the cleaning nozzle is inserted into the discharge pipe through the inside of the guide pipe, the hose of the cleaning nozzle may be largely bent when passing through the opening of the joint, which may make it difficult to insert the hose. Therefore, there is room for improvement in this respect.

  The present invention has been made in consideration of the above facts, and an object thereof is to provide a method for cleaning a drain pipe that facilitates cleaning the inside of the drain pipe.

  The method for cleaning a drainage pipe according to the present invention according to claim 1 is a method for cleaning a drainage pipe that allows drainage from a water supply device to flow, the cleaning being supported by the drainage pipe and formed on the drainage pipe. A hose having a cylindrical base portion that covers the periphery of the mouth and a cleaning nozzle that is integrally provided on one end side of the base portion in the axial direction and that is inserted from the cleaning port is provided in a predetermined direction in the axial direction of the base portion. A guide part configured to include a guide part that guides in a direction inclined in a direction, and a first step of attaching a guide member, and the cleaning nozzle that passes through the inside of the guide member to the inside of the drain pipe from the cleaning port. And a second step of inserting.

  In the drainage pipe cleaning method according to the first aspect of the present invention, the guide member is attached to the cleaning port of the drainage pipe, and the cleaning nozzle is inserted into the drainage pipe from the cleaning port via the guide member. Then, the hose of the cleaning nozzle is sequentially fed into the pipe material while ejecting water from the cleaning nozzle. Thereby, the inside of the drain pipe can be sequentially cleaned.

  Here, since the tubular guide member that covers the periphery of the cleaning port is attached to the drain pipe, it is possible to prevent the cleaning water from splashing outside from the cleaning port. As a result, the work area can be worked without being contaminated with cleaning water, and the efficiency of the cleaning work is improved.

  Further, when the cleaning nozzle is inserted into the drain pipe via the guide member, the hose of the cleaning nozzle is supported by the guide portion of the guide member while being inclined in a predetermined direction. For this reason, the hose can be inserted while being inclined according to the introduction direction of the cleaning nozzle, which facilitates the work of inserting the cleaning nozzle into the drain pipe.

  According to a second aspect of the present invention, there is provided a drainage pipe cleaning method according to the first aspect of the present invention, wherein the cleaning port extends laterally and drains drainage from a water around device. It is arranged at the downstream side of the laterally drawn pipe and is provided at a position overlapping at least a part of a bent portion which constitutes a joint for connecting a vertical pipe extending in a substantially vertical direction.

  In the drainage pipe cleaning method according to the second aspect of the present invention, the cleaning port into which the cleaning nozzle is inserted is provided at a position overlapping at least a part of the bent portion of the joint that connects the horizontal pipe and the vertical pipe. ing. Therefore, the cleaning nozzle is easily inserted into both the horizontal pipe side and the vertical pipe side through the cleaning port, which facilitates the work of inserting the cleaning nozzle into the horizontal pipe and the vertical pipe.

  A drainage pipe cleaning method according to a third aspect of the present invention is characterized in that, in the configuration according to the second aspect, the cleaning port is provided at a position overlapping the entire bent portion.

  In the drainage pipe cleaning method according to the third aspect of the present invention, the cleaning port into which the cleaning nozzle is inserted is provided at a position overlapping the entire bent portion of the drainage pipe. Therefore, it becomes easier to access the inside of the drain pipes located on both sides of the bent portion from the cleaning port. This further facilitates the work of inserting the cleaning nozzle into the drain pipe.

  According to a fourth aspect of the present invention, there is provided a drainage pipe cleaning method according to any one of the first to third aspects, wherein the guide portion has a peripheral edge on one end side in the axial direction of the base portion. It is characterized in that it has a wall portion that is erected from the portion to the outside in the axial direction, and that the inside diameter of the wall portion gradually increases from the peripheral portion toward the outside.

  In the drainage pipe cleaning method according to the fourth aspect of the present invention, the guide portion of the guide member has a wall portion that is provided axially outward from a peripheral edge portion on one end side in the axial direction of the base portion. The inner diameter of the wall portion gradually increases as it goes toward the wall portion. That is, the wall portion of the guide portion is inclined in a predetermined direction with respect to the axial direction of the base portion. Accordingly, when the cleaning nozzle is inserted into the drain pipe via the guide member, the hose of the cleaning nozzle is supported by the wall portion of the guide portion while inclining in a predetermined direction. Furthermore, by changing the support surface of the hose by the wall portion, the inclination direction of the hose can be changed with the guide member still attached. This further facilitates the work of inserting the cleaning nozzle into the drain pipe.

  According to a fifth aspect of the present invention, there is provided a drainage pipe cleaning method according to any one of the first to fourth aspects, wherein the guide member is formed of an elastically deformable elastic body. There is.

  In the drainage pipe cleaning method according to the fifth aspect of the present invention, the guide member is formed of an elastically deformable elastic body. For this reason, when it is necessary to insert the hose of the cleaning nozzle with a large inclination along the drain pipe, such as when the inner diameter of the drain pipe is small, the guide member is elastically deformed and the hose of the cleaning nozzle is It can be tilted according to the insertion direction. This makes it possible to handle drainage pipes of various shapes and enhances the versatility of the cleaning work.

  The cleaning method of the drainage pipe according to the present invention according to claim 6 is the configuration according to any one of claims 1 to 5, wherein the cleaning port is arranged outside the dwelling unit in the drainage pipe. It is characterized in that it is provided in the part.

  In the drainage pipe cleaning method according to the sixth aspect of the present invention, the cleaning port into which the cleaning nozzle is inserted is arranged outside the dwelling unit. Therefore, the worker can perform the cleaning work without entering the dwelling unit, and it is possible to suppress the influence on the occupants and the like accompanying the cleaning work. Therefore, the convenience of cleaning work is improved.

  As described above, according to the drainage pipe cleaning method of the present invention, the inside of the drainage pipe is cleaned by facilitating the work of inserting the cleaning nozzle into the drainage pipe and improving the efficiency of the cleaning work. It has an excellent effect that it can be easily performed.

It is a side view which shows the whole structure of the siphon drainage system. It is the perspective view which made the cross section one part which shows the joint with a cleaning opening. It is a disassembled perspective view which made the cross section a part which shows the joint with a cleaning port. It is a top view which shows the joint with a cleaning opening which removed the core and the lid. It is a perspective view which shows a core. FIG. 6 is a sectional view taken along line 6-6 of the joint with a cleaning port shown in FIG. 2. It is sectional drawing which shows the joint with a cleaning opening which inserted the washing nozzle. It is the perspective view which made the cross section a part which shows the joint with a cleaning port which inserted the guide member. It is a perspective view corresponding to FIG. 8 which shows the modification of a guide member. It is a perspective view corresponding to FIG. 8 which shows the modification of a cleaning port joint.

  Hereinafter, a method for cleaning the siphon drain pipe 44 using the joint 50 with a cleaning port according to the embodiment of the present invention will be described with reference to FIGS. 1 to 8. FIG. 1 is a schematic diagram showing the overall configuration of a siphon drainage system 10 using a joint 50 with a cleaning port according to this embodiment. The siphon drainage system 10 according to the present embodiment is a drainage system that efficiently discharges the drainage from the water supply equipment by using the siphon force.

(Outline of siphon drainage system)
The siphon drainage system 10 is used in an apartment house composed of a plurality of floors, and as shown in FIG. 1, includes a drainage stack 12 for drainage to flow downward. The drainage stack 12 extends in the vertical direction (vertical direction) of the housing complex and penetrates the floor slab 14 on each floor of the housing complex. The drainage stack 12 is arranged outside the outer wall 16 that partitions the inside and outside of the dwelling unit, for example, in the meter box 18. The siphon drainage system of the present embodiment is preferably used for an apartment house, but can also be used for a detached house, a factory, etc. other than the apartment house.

  A water supply device 20 is provided at each door on each floor of the housing complex. The water supply device 20 is, for example, a kitchen sink, and a disposer 22 and a drain trap 24 are connected to the downstream side in the drainage direction. An L-shaped pipe member 26 bent in an L-shape is arranged on the downstream side of the drain trap 24 in the drain direction. The L-shaped pipe member 26 is connected to the drain trap 24 and extends in the vertical direction. It is configured to include a curved portion 26C that connects to and.

  On the downstream side of the L-shaped pipe member 26 in the drainage direction, a horizontal draw pipe member 28 that is arranged on the floor slab 14 and extends in the horizontal direction, that is, in the direction perpendicular to the vertical direction is arranged. The L-shaped pipe member 26 and the laterally drawn pipe member 28 are connected via a joint 30.

  A first connecting portion 60 of a joint 50 with a cleaning port, which will be described later, is connected via a joint 32 to an end portion of the horizontal draw pipe member 21 on the downstream side in the drainage direction. A vertical pipe member 36 that extends through the floor slab 14 and extends in the vertical direction is provided on the downstream side of the joint 50 with a cleaning port. The second connecting portion 62 of the joint 50 with a cleaning port is connected to the upstream end of the vertical pipe member 36.

  An end of the vertical pipe member 36 on the downstream side in the drainage direction is connected via a joint 42 to a merging joint 40 attached to an intermediate portion of the drainage stack 12.

  In the present embodiment, the pipe portion horizontally arranged on the floor slab 14, specifically, the horizontal portion 26B of the L-shaped pipe member 26 and the horizontal pipe member 28 are the horizontal pipe 46 of the siphon drain pipe 44. The vertical pipe member 36 is the vertical pipe 48 of the siphon drain pipe 44. The siphon drain pipe 44 corresponds to the "drain pipe" in the present invention.

(Structure of joint)
As shown in FIGS. 2 and 3, a joint 50 with a cleaning port, which is an example of the joint of the present invention, includes a main body 52, a core 54 as a closing member, and a lid 56. The main body 52, the core 54, and the lid 56 of this embodiment are formed of synthetic resin.

  The main body portion 52 is formed of an opaque synthetic resin and includes a main body tube portion 58 having a tubular shape. The main body tube portion 58 is curved in a substantially L-shape, and has a horizontal portion 58A extending along the axial direction of the horizontal pulling pipe 46 and a vertical portion 58B extending along the axial direction of the vertical pipe 48. And are equipped with. In addition, the main body pipe portion 58 includes a bent portion 58C that connects the downstream end portion of the horizontal portion 58A and the upstream end portion of the vertical portion 58B. In other words, the main body tube portion 58 forms a tubular body that is curved around the bent portion 58C. Further, the horizontal portion 58A and the vertical portion 58B arranged on both sides of the bent portion 58C extend in directions orthogonal to each other. The inner diameter of the main body tube portion 58 is formed to have a constant diameter.

  Further, in the main body pipe portion 58, a first connecting portion 60 is integrally formed at an upstream end portion of the horizontal portion 58A, and a second connecting portion 62 is integrally formed at a downstream end portion of the vertical portion 58B. Has been formed.

  The first connecting portion 60 is formed to have a diameter larger than the diameter of the main body pipe portion 58, and the joint 32 can be inserted therein. The second connecting portion 62 is formed to have a diameter larger than the diameter of the main body pipe portion 58, and the upstream end portion of the vertical pipe 48 can be inserted (see FIG. 2). In this way, the joint 50 with the cleaning port of the siphon drainage pipe 44 of the present embodiment connects the horizontal pulling pipe 46 and the vertical pipe 48, and vertically extends a pipe extending in a substantially horizontal direction (lateral direction). It functions as a bending pipe that is dropped to the side. In the joint 50 with a cleaning port of the present embodiment, the first connecting portion 60 and the second connecting portion 62 have the same shape, and the inner diameter of the first connecting portion 60 and the inner diameter of the second connecting portion 62 are the same inner diameter. Has been done.

  Further, the above-mentioned second connecting portion 62 is fixed to the floor surface 14A of the floor slab 14 using a fixing means (not shown). As a result, the joint with cleaning port 50 is supported by the floor slab 14 from below (see FIG. 1).

  As shown in FIG. 2, FIG. 3, and FIG. 6, the main body tube portion 58 is integrally formed with a side pipe portion 64 that is formed in a cylindrical shape and is erected vertically upward from the upper surface of the main body tube portion 58. It is provided. Specifically, the side pipe portion 64 is provided from the upper surface of the horizontal portion 58A forming the main body pipe portion 58 to the upper surface of the bent portion 58C. The diameter of the side pipe portion 64 is formed to be larger than the diameter of the main body pipe portion 58.

  Further, a partition wall 66 is provided between the side pipe portion 64 and the main body pipe portion 58. A cleaning port 68 is formed in the center of the partition wall 66 so as to penetrate the partition wall 66 in the vertical direction. As a result, the inside of the side pipe portion 64 and the inside of the main body pipe portion 58 communicate with each other through the cleaning port 68.

  The cleaning port 68 is formed in a long rectangular shape in a plan view, and its longitudinal direction coincides with the axial direction of the laterally drawn tube 46. The cleaning port 68 is formed at a position overlapping the horizontal portion 58A and the bent portion 58C of the main body pipe portion 58 in a plan view. Specifically, as shown in FIG. 4, the cleaning port 68 is formed to be slightly larger than the outer shapes of the horizontal portion 58A and the bent portion 58C of the main body tube portion 58 in plan view. Therefore, the inside of the horizontal portion 58A and the vertical portion 58B can be visually recognized through the cleaning port 68 formed in the partition wall 66. In addition, at the boundary between the peripheral portion of the cleaning port 68 and the main body pipe portion 58, the downstream end portion of the horizontal portion 58A of the main body pipe portion 58, the bent portion 58C, and the upstream end portion of the vertical portion 58B are continuous. A stepped portion 67 formed by the above is provided.

  As shown in FIG. 3, FIG. 4, and FIG. 6, an annular step portion 70 that protrudes radially inward (center side) of the side tube portion 64 is formed on the lower end portion and inner peripheral surface of the side tube portion 64. Has been done. On the other hand, on the outer peripheral surface of the side pipe portion 64, a male screw 72 is formed on the axially upper portion of the side pipe portion 64, and an annular groove 74 is formed on the lower side of the male screw 72. An O-ring 76 is attached to the annular groove 74.

  As shown in FIG. 2, the core 54 is inserted inside the side tube portion 64. The core 54 is made of transparent synthetic resin. As shown in FIG. 5, the core 54 includes a cylindrical portion 78 that is inserted inside the side tube portion 64, and a cleaning port closing portion that fits into the cleaning port 68 at the lower end portion of the cylindrical portion 78 in the axial direction. The portion 80 is formed integrally with the cylindrical portion 78.

  An annular groove 82 is formed on the outer peripheral surface of the lower end portion in the axial direction of the cylindrical portion 78, and an O-ring 84 is attached to the annular groove 82. As shown in FIGS. 2 and 6, when the core 54 is inserted inside the side tube portion 64, the O-ring 84 contacts the inner peripheral surface of the side tube portion 64, and the core 54 and the side tube portion It is configured to seal the gap between it and the portion 64.

  As shown in FIGS. 2 and 5, the cleaning port closing part 80 is formed as a plate material curved in an L shape, and when the core 54 is inserted into the side tube part 64, the cleaning port 68 is closed. It is arranged so as to cover from the upper side. Further, as described above, since the core 54 is formed of the transparent synthetic resin, the inside of the main body pipe portion 58 can be visually recognized from the outside with the core 54 inserted in the inside of the side pipe portion 64. There is. The core 54 may be made of a semitransparent synthetic resin.

  Further, the cleaning port closing portion 80 has a cross-sectional shape along a direction orthogonal to the extending direction of the cleaning port closing portion 80, which is a substantially arc shape opened to the main body pipe portion 58 side. Further, the radius of curvature of the curved surface 86 forming the inner surface of the cleaning port closing portion 80 matches the radius of curvature of the inner peripheral surface of the main body tube portion 58. Therefore, in the state where the cleaning port closing portion 80 is fitted in the cleaning port 68, the peripheral edge portion of the cleaning port closing portion 80 is fitted in the step portion 67, and the curved surface 86 of the cleaning port closing portion 80 is It is configured to be connected to the inner peripheral surface of 58 without any step. As a result, the cleaning port closing portion 80 of the core 54 constitutes a part of the bent portion 58C.

  A female screw 88 that is screwed into the male screw 72 of the side tube portion 64 and a contact portion 90 with which the O-ring 76 of the side tube portion 64 contacts are formed on the inner peripheral portion of the lid 56. When the lid 56 is attached to the side tube portion 64, the O-ring 76 of the side tube portion 64 comes into contact with the contact portion 90 of the lid 56 to seal the gap between the side tube portion 64 and the lid 56. . The lid 56 is preferably made of a transparent or semitransparent synthetic resin, like the core 54. When the lid 56 is formed of a transparent or semi-transparent synthetic resin, the inside of the main body tube portion 58 can be viewed through the lid 56 and the core 54 in a state where the lid 56 is attached to the side tube portion 64.

(Method of cleaning the inside of the siphon drainage pipe 44)
Next, a procedure for cleaning the inside of the siphon drainage pipe 44 of the present embodiment will be described below.

(1) First, drainage from the water supply device 20 is stopped, the lid 56 is removed from the joint 50 with a cleaning port, the core 54 is taken out from the inside of the side tube portion 64, and the cleaning port 68 is removed as shown in FIG. Expose.

(2) Next, as shown in FIG. 8, the tubular guide member 92 is attached to the side tube portion 64 of the joint with cleaning port 50 (first step). The guide member 92 is made of an elastic material such as rubber and includes a base portion 92A formed in a substantially cylindrical shape, and a guide portion 92B integrally formed from a peripheral portion of the base portion 92A at one end side in the axial direction. The guide portion 92B is provided with a wall portion 92B1 which is erected axially outward from a peripheral edge portion on the one axial end side of the base portion 92A and has a mortar shape in a side view. In other words, the inner diameter of the wall portion 92B1 gradually increases from the peripheral portion of the base portion 92A toward the outside, and is inclined in a predetermined direction with respect to the axial direction of the base portion 92A. The work of attaching the guide member 92 is completed by inserting the cylindrical base portion 92A inside the side pipe portion 64. In this state, the inner side surface of the guide portion 92B is arranged to be inclined radially outward with respect to the axial direction (vertical direction) of the base portion 92A.

(3) Next, the cleaning nozzle 92 is inserted into the cleaning port 68 via the guide member 92 to clean the insides of the lateral pulling pipe 46 and the vertical pipe 48 (second step). When cleaning the inside of the horizontal pipe 46 on the upstream side of the joint 50 with a cleaning port, as shown by the solid line in FIG. It is sent to the side of the horizontal portion 58A, and inserted toward the inside of the horizontal pulling pipe 46. Then, the hose 94 is sequentially sent to the upstream side of the horizontal pipe 46 while ejecting the water w from the cleaning nozzle 92. As a result, the inside of the horizontal draw pipe 46 can be sequentially cleaned. The water w used for cleaning flows to the vertical pipe 48 side and is discharged to the drainage stack 12.

  Here, since the periphery of the cleaning port 68 is covered by the side surface of the guide member 92, it is possible to prevent the water w for cleaning from splashing outside the joint 50 with a cleaning port. Further, when the cleaning nozzle 92 is sent to the upstream side of the horizontal pipe 46, the hose 94 arranged outside the side pipe portion 64 is supported by the guide portion 92B of the guide member 92 while gently inclining. Therefore, even when the cleaning nozzle 94 is inserted into the cleaning port 68 via the guide member 92, the hose 96 can be supported along the traveling direction of the cleaning nozzle 94, so that the cleaning nozzle 94 and the hose 96 are sent in. Is configured so that it can be easily performed.

  When it is necessary to insert the hose 96 while largely inclining along the exhaust pipe, such as when the inner diameter of the exhaust pipe is small, the rubber guide portion 92B is elastically deformed to change the inclination direction. The hose 96 can be supported according to the insertion direction.

  On the other hand, when cleaning the inside of the vertical pipe 48 on the downstream side of the joint 50 with a cleaning port, a cleaning nozzle 92 that injects water w is provided from the cleaning port 68 to the main body as shown by a two-dot chain line in FIG. 7. It is fed to the vertical portion 58B side of the pipe portion 58 and inserted toward the inside of the vertical pipe 48. Then, the hose 94 is sequentially sent to the downstream side of the vertical pipe 48 while ejecting the water w from the cleaning nozzle 92. Thereby, the inside of the vertical pipe 48 can be sequentially cleaned. In the present embodiment, the cleaning port 68 is formed at a position overlapping the bent portion 58C of the main body tube portion 58 in a plan view. Therefore, the cleaning nozzle 94 can be fed into the vertical pipe 48 by inserting the cleaning nozzle 94 vertically downward from the cleaning port 68. As a result, the inside of the vertical pipe 48 can be cleaned with almost no bending of the hose 96 of the cleaning nozzle 94. The water w used for cleaning flows to the downstream side of the vertical pipe 48 and is discharged to the drainage stack 12.

(Action, effect)
Next, the action and effect of the method for cleaning the inside of the siphon drainage pipe 44 according to the present embodiment will be described.

  The siphon drainage pipe 44 of the present embodiment is a horizontal pipe 46 that extends in the horizontal direction and flows the drainage from the water swirl device 20, and a vertical pipe that is arranged on the downstream side of the horizontal pipe 46 and extends in a substantially vertical direction. It is configured to include a pipe 48 and a joint 50 with a cleaning port that connects the two. Further, the joint with cleaning port 50 is curved around the bent portion 58C. A cleaning port 68 is provided in a portion that overlaps the entire bent portion 58C.

  For cleaning the inside of the siphon drain pipe 44, a guide member 92 that covers the periphery of the cleaning port 68 is attached to the cleaning port 68 in advance, passes through the inside of the guide member 92, and the siphon drain pipe 44 extends from the cleaning port 68. This is performed by inserting the cleaning nozzle 94 into the inside of the.

  In the present embodiment, the cleaning port 68 into which the cleaning nozzle 94 is inserted is provided in a portion that overlaps the entire bent portion 58C that configures the joint 50 with a cleaning port. For this reason, since the cleaning nozzle 94 can be inserted from the vicinity of the bent portion 58C, the cleaning nozzle 94 can be easily inserted into either the side of the horizontal pipe 46 or the vertical pipe 48 through the cleaning port 68. . As a result, the hose 96 of the cleaning nozzle 94 is prevented from being sharply bent inside the siphon drain pipe 44, and the work of inserting the cleaning nozzle 94 into the drain pipe is facilitated.

  Further, since the cleaning port 68 of the siphon drainage pipe 44 is covered with the tubular guide member 92 around the cleaning port 68, it is possible to prevent the cleaning water w from splashing outside from the cleaning port 68. As a result, the work place (inside the meter box 18) can be worked without being contaminated with the cleaning water w, and the efficiency of the cleaning work can be improved.

  Further, when the cleaning nozzle 94 is inserted into the siphon drainage pipe 44 via the guide member 92, the hose 96 of the cleaning nozzle 94 is supported by the guide portion 92B of the guide member 92 while being inclined in a predetermined direction. For this reason, since the hose 96 can be inserted while being inclined in accordance with the introduction direction of the cleaning nozzle 94, the work of inserting the cleaning nozzle 94 into the inside of the siphon drain pipe 44 becomes easy.

  Further, in the present embodiment, the guide portion 92B of the guide member 92 has a wall portion 92B1 which is erected from the peripheral edge portion on the one end side in the axial direction of the base portion 92A to the outside in the axial direction. Further, the inner diameter of the wall portion 92B1 gradually increases from the peripheral portion toward the outside. By changing the support surface of the hose 96 by the wall portion 92B1, the inclination direction of the hose 96 can be changed with the guide member 92 attached. As a result, the work of inserting the cleaning nozzle 94 into the inside of the siphon drainage pipe 44 becomes easier.

  Further, in the present embodiment, the guide member is formed of an elastic body such as rubber that is elastically deformable. Therefore, when it is necessary to insert the hose 96 of the cleaning nozzle 94 while inclining the hose 96 of the cleaning nozzle 94 along the drain pipe largely when the siphon drain pipe 44 has a small inner diameter, the guide portion 92B of the guide member 92 is provided. The hose 96 can be elastically deformed to incline in accordance with the insertion direction of the cleaning nozzle 94. This makes it possible to handle drainage pipes of various shapes and enhances the versatility of the cleaning work.

  Further, in the present embodiment, since the joint with cleaning port 50 is arranged inside the meter box 18, the cleaning port 68 is arranged outside the dwelling unit. Therefore, the worker can perform the cleaning work without entering the dwelling unit, and it is possible to suppress the influence on the occupants and the like accompanying the cleaning work. Therefore, the convenience of cleaning work can be improved.

[Supplementary explanation]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and it goes without saying that various modifications can be made without departing from the scope of the invention. Is.

  For example, in the above-described embodiment, the core 54 and the lid 56 forming the joint 50 with a cleaning port are entirely formed of transparent or translucent synthetic resin, but the present invention is not limited to this. The core 54 and a part of the lid 56 may be formed of transparent or translucent synthetic resin. Specifically, the cylindrical portion 78 of the core 54 may be formed of an opaque synthetic resin, and the cleaning port closing portion 80 may be formed of a transparent synthetic resin. That is, in the core 54 and the lid 56, the portion of the joint 50 with a cleaning port overlapping the cleaning port 68 in plan view may be formed of a transparent or semitransparent synthetic resin.

  The present invention is not limited to this, and the core 54 and the lid 56 may be entirely made of an opaque synthetic resin.

  Further, in the present embodiment, the cleaning port 68 of the joint 50 with a cleaning port is formed at a position overlapping the entire bent portion of the joint, but the present invention is not limited to this. The cleaning port 68 only needs to be formed at a position overlapping at least a part of the bent portion (bent portion 58C of the main body pipe portion 58) of the joint, and in plan view, the horizontal portion 58A and the vertical portion 58B of the main body pipe portion 58. At least a part of the inside is preferably visible.

  Further, in the present embodiment, the guide member 92 is attached to the side pipe portion 64 of the joint 50 with a cleaning port as an example of a method of cleaning the inside of the horizontal pipe 46 and the vertical pipe 48. It is not limited to this. Instead of mounting the guide member 92 on the side tube portion 64, the cleaning nozzle 94 may be directly inserted into the side tube portion 64 for cleaning. Further, although the guide member 92 is made of elastically deformable rubber in the present embodiment, it may be made of synthetic resin that does not elastically deform.

  Further, as an example of a method for cleaning the insides of the horizontal pulling pipe 46 and the vertical pipe 48, the guide member 100 shown in FIG. 9 may be attached to the side pipe portion 64. The guide member 100 is made of a synthetic resin and includes a base portion 100A having a substantially cylindrical shape, and a guide portion 100B formed integrally with a peripheral portion of the base portion 100A at one end side in the axial direction. The guide portion 100B includes a wall portion 100B1 that is erected from the peripheral edge portion on the one axial end side of the base portion 100A to the outside in the axial direction. The inner diameter of the wall portion 100B1 is gradually reduced from the peripheral portion of the base portion 100A toward the outside, and is formed in a slightly tapered cylindrical shape. Further, the wall portion 100B1 is inclined in a predetermined direction with respect to the axial direction of the base portion 100A. The work of attaching the guide member 100 is completed by inserting the cylindrical base portion 100A into the inside of the side pipe portion 64 of the joint 50 with a cleaning port.

  In this guide member 100, the extending direction of the guide portion 100B can be changed to a predetermined direction by rotating the insertion direction of the base portion 100A into the side pipe portion 64 and changing the insertion direction. For this reason, when cleaning the horizontal pulling pipe 46, the guide member 100 is mounted in the direction in which the guide portion 100B is arranged in accordance with the extending direction of the horizontal pulling pipe 46 (see the solid line position shown in FIG. 9). Then, at the time of cleaning the vertical pipe 48, the direction of the guide member is changed, and the guide portion 100B is arranged according to the extending direction of the vertical pipe 48 (see the position indicated by the chain double-dashed line in FIG. 9). Accordingly, since the cleaning nozzle 94 can be supported by using the guide member 100 so as to be aligned with the introduction direction, the cleaning nozzle 94 can be easily inserted into the discharge pipe as in the above embodiment. it can. Further, since the wall portion 100B1 of the guide portion 100B is tapered toward the tip, the cleaning water w ejected from the cleaning nozzle 94 is unlikely to be scattered to the outside.

  Further, as shown in FIG. 9, the lid member 200 may be fitted to the insertion opening 100B2 at the upper end of the guide portion 100B during the cleaning operation of the inside of the pipe. As a result, it is possible to further effectively prevent the cleaning water w from being scattered from the cleaning port 68 to the outside. The lid member 200 is formed of, for example, an elastic body such as rubber and has a substantially columnar shape. Further, the hose 96 is movably inserted in the lid member 200 at the center along the axial direction. The outer dimension of the lid member 200 is set to be slightly smaller than the inner diameter of the insertion opening 100B2, and is fitted into the insertion opening 100B2 by being press-fitted into the guide portion 100B from the insertion opening 100B2. The guide member 100 is not limited to synthetic resin, and may be formed of an elastic body such as rubber.

  Further, in the present embodiment, the joint 50 with a cleaning port is configured to be provided at the connecting portion between the horizontal pulling pipe 46 and the vertical pipe 48, but the present invention is not limited to this. As in the joint 300 with a cleaning port shown in FIG. 10, the main body pipe portion 302 forming the main body 52 of the joint is formed in a substantially cylindrical shape, and the joint 300 with a cleaning port is provided in the middle of the linearly arranged pipe path. May be connected.

  Further, in the present embodiment, the shape of the guide portion 92B of the guide member 92 has a mortar shape in a side view, but the present invention is not limited to this. For example, the shape may be a columnar trapezoidal shape in a side view.

  Further, in the above embodiment, the joint 50 with a cleaning port is connected to the siphon drainage pipe 44, but it may be connected to a general gradient pipe that inclines toward the downstream side. Moreover, although the joint 50 with a cleaning port is configured to be connected to the horizontal pipe 46 extending in the horizontal direction and the vertical pipe 48 extending vertically downward, the present invention is not limited to this, and the joints 50 may be in different directions on a horizontal plane. You may apply to the connection part of two extending discharge pipes.

  20 ... Water equipment, 44 ... Siphon drainage pipe (drainage pipe), 46 ... Horizontal pipe, 48 ... Vertical pipe, 50 ... Joint (joint) with cleaning port, 58C ... Bend part, 68 ... Cleaning port, 92 ... Guide Member, 92A ... Base part, 92B ... Guide part, 92B1 ... Wall part, 100 ... Guide member, 100A ... Base part, 100B ... Guide part, 100B1 ... Wall part

Claims (6)

A method of cleaning a drainage pipe that drains water from a water supply device,
A cylindrical base portion that is supported by the drain pipe and covers the periphery of the cleaning port formed in the drain pipe, and a cleaning unit that is integrally provided on one end side of the base portion in the axial direction and that is inserted from the cleaning port. A first step of attaching a guide member including a guide portion capable of guiding a hose provided with a nozzle in a direction inclined in a predetermined direction with respect to an axial direction of the base portion;
A second step of inserting the cleaning nozzle into the drain pipe from the cleaning port through the inside of the guide member;
Cleaning method of drainage pipe including. The cleaning port is a joint that connects a horizontal pipe that extends in the horizontal direction and flows the drainage from the water-surrounding device, and a vertical pipe that is arranged on the downstream side of the horizontal pipe and that extends in the substantially vertical direction. Characterized in that it is provided at a position overlapping at least a part of the bent portion constituting
The drainage pipe cleaning method according to claim 1. The cleaning port is provided at a position overlapping the entire bent portion,
The method for cleaning a drain pipe according to claim 2. The guide portion has a wall portion that is erected axially outward from a peripheral edge portion on the one axial end side of the base portion, and the inner diameter of the wall portion is gradually increased from the peripheral edge portion outward. Is characterized by
The method for cleaning the drainage pipe according to claim 1. The guide member is formed of an elastic body that is elastically deformable.
The method for cleaning the drainage pipe according to claim 1. The cleaning port is provided in a portion of the drain pipe arranged outside the dwelling unit,
The method for cleaning the drainage pipe according to claim 1.