JP5219702B2 - Drain pipe waterproof pad and drain stack joint - Google Patents

Description

  The present invention relates to a drainage pipe water stop pad and a drainage stack joint used in a full water test for evaluating the watertightness of a drainage pipe in drainage pipe construction of a condominium or a building.

As a method for confirming the water tightness of a drainage system piped in a building such as a condominium or a building, a test method called a full water test is adopted.
This method is performed for each floor or room drainage branch system connected to the drainage standpipe, water is stopped at the drainage stack side, water is supplied to the pipes of the unit piping system, and the water level is waited for a predetermined time. This is a method of confirming that there is no water leakage in the piping by observing that no change occurs.

As this full water test, the method described in FIG.
A conventional method described in Patent Document 1 will be described with reference to FIG.
A drainage stack pipe joint (which may be simply referred to as a joint hereinafter) 102 for each floor is provided on a drainage stack pipe 101 penetrating the floor 100, and a drainage horizontal support pipe 103 is attached to the joint 102.

A balloon-like test ball 104 is inserted into the drainage stack 101 from the cleaning port 101a, held in place by a suspension rope 104a, compressed air is injected from the air hose 104b, and the test ball 104 is inflated to be drained. Close the water by contacting the inner wall of the vertical pipe.
Next, water is poured from a drainage outlet 103a such as a toilet or a wash surface, the water 105 is filled in the drainage system, a change in the water level of the drainage outlet 103a is observed, and it is confirmed whether there is any leakage from a plurality of joints 103b.

After the confirmation, the operation of releasing the air in the test ball 104 and taking it out from the cleaning port 101a is performed, and the full water test is completed.
In contrast to this conventional method, although the method proposed in Patent Document 1 is not shown, a cleaning joint is provided for each floor, and a water-stop cartridge is inserted into the cleaning joint. It is a method to stop water.
JP2008-13986

However, in the conventional method described in Patent Document 1 as described above, a cleaning port is usually provided every 3rd to 4th floors. Therefore, the full water test cannot be performed unless the upper floors are completed. In addition to the repeated use of test balls, water leakage occurs due to wear and fatigue, so it is necessary to replace them regularly, and in addition, it is necessary to transport an air pump that injects compressed air to the upper floors. There is a problem of becoming.
Further, the method proposed in Patent Document 1 as described above has a problem that the construction is complicated and expensive because a cleaning joint is provided for each floor.

  The present invention has been made in view of the above problems, and solves the conventional problems, and it is possible to shorten the test time with a simple test procedure, and to prevent drainage pipes from being filled with water at low cost. It is an object to provide a pad and a joint for a drainage stack.

In order to solve the above-mentioned problem, the drain water stop pad of the present invention is a base material such as disk-shaped paper, water-soluble paper, water-soluble film, or a composite multilayer body having substantially the same outer diameter as the drainage stack. A waterproof adhesive is applied to the outer edge of the pipe so that it can intervene at the joint between the drainage stack and the joint. Preventing the base material from melting in water, and after a predetermined time, the base material is crushed by the pressure of water and discharged to the downstream of the drainage stack with water so that a full water test can be performed within the predetermined time. It is.
With such a configuration, preparation work for the full water test and cleanup work after the full water test are simplified, and labor saving and time reduction for the test can be achieved.
Moreover, the drain pipe waterproof pad of the present invention is obtained by sandwiching the above-mentioned base material with two ring-shaped synthetic resin plates. This enhances the strength and facilitates storage and handling.
Moreover, the drain pipe water stop pad of the present invention has a structure in which a ring-shaped water expansion rubber is bonded to the peripheral edge of the base material. Thereby, watertightness can further be improved.
The drainage stack joint of the present invention is a drainage standpipe joint that has the drainage pipe water stop pad mounted in advance. Thereby, it becomes unnecessary to store the drain pipe water stop pad separately, and the workability at the construction stage is improved.

  ADVANTAGE OF THE INVENTION According to this invention, the test preparation and the after-treatment after a test are easy, test time can be shortened, and also the drainage water stop pad for a full water test and the joint for drainage standpipe can be provided.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

(First embodiment)
First, the method of the full water test by the water stop pad and joint of this invention is demonstrated using FIG.
In FIG. 1, a joint 102 for each floor is provided in a drainage stack 101 penetrating the floor 100, and a drainage horizontal support pipe 103 is attached to the joint 102.
Further, the water stop pad 1 is attached to the joint 102.

Water is poured from a drain outlet 103a such as a toilet or a wash surface, and the water 105 is filled into the drainage system (full state), a change in the water level of the drain outlet 103a is observed for a predetermined time (for example, 30 minutes), and a plurality of seams 103b Make sure there is no water leakage.
After the confirmation, the full water state is continued as it is, but the water stop pad melts into water with the passage of time, and the water is discharged downstream of the drainage stack.

Next, the drainage stack joint of the present invention will be described with reference to the sectional view of the drainage stack joint of FIG.
The joint 102 includes step portions 102a and 102b for connecting the drainage stack 101 up and down, and further includes a step portion 102c for connecting a drainage horizontal branch pipe (reference numeral 103 in FIG. 1). A drain pipe water stop pad 1 to be described later is attached to the lower step portion 102a.

In a state where the drainage stack 101 is inserted into the joint 102 configured as described above, the inner diameter of the drainage stack 101 and the inner diameter of the joint 102 match, so that a step where dirt or the like is moored does not occur.

  The joint 102 and the drainage stack 101 are bonded with an adhesive on the contact surfaces of the fittings and the drainage stack 101 and watertightness is ensured.

FIG. 2B is a view showing an example in which the drain pipe water stop pad 1 is attached to the step portion 102 c for connecting the drain side branch pipe of the joint 102.
Even with such a configuration, the above-mentioned full water test can be performed, but the following description will be described with reference to the example of FIG.

Next, the drain pipe water stop pad will be described with reference to FIGS.
3A and 3B are diagrams showing the configuration of the drain pipe water stop pad, FIG. 3A is a perspective view, and FIG. 3B is a cross-sectional view taken along a vertical plane including the central axis of the pad of FIG. .
The drain pipe water stop pad 10 includes a disk-shaped paper or water-soluble paper (hereinafter referred to as water-soluble paper) or a water-soluble resin film base material 11 having the same external dimensions as the drainage standpipe 101, and the base material 11. A waterproof (for example, silicon-based) adhesive 12 applied to a portion that contacts the joint 102 at the outer edge portion, and a protective sheet 13 for protecting the adhesive 12.

  In addition to the Kent paper used for drawing etc. and the water-soluble paper used for urinalysis mounts in the medical field, the base material 11 includes a water-soluble resin film (for example, trade name) mainly composed of polyvinyl alcohol (PVA). Sorbon) can be used.

FIG. 4 is a cross-sectional view showing a state where the drainage pipe water stop pad 10 is attached to the drainage stack shown in FIG. 2 and the drainage stack is connected.
As shown in FIG. 2, the drain water stop pad 10 may be in a state of being attached to the joint 102 in advance, and the protective sheet 13 may be removed and adhered to the joint 102 at the stage of drainage work. May be.

When water is poured in the state of FIG. 4, the waterproof adhesive 12 drains the water 105 through the gap between the joint 102 and the base material 11 and the gap between the drainage stack 101 and the base material 11 (arrow A). Leaking downward from the vertical tube 101 is prevented.
Therefore, although not shown, the waterproof property can be further improved by providing the adhesive 12 on the lower surface of the substrate 11.

  By pouring water, when the base material 11 is paper, the bonded fibers are separated with time, and in the case of water-soluble paper and water-soluble resin film, the base material 11 is dissolved or melted in water. The base material 11 is crushed when the water pressure of 105 cannot be supported, and most of the base material 11 is discharged downstream of the drainage stack 101 together with water. At this time, the remaining portion of the base material 11 attached to the adhesive 12 is also discharged together with the drainage of the drain pipe used after the full water test.

(Second Embodiment)
The drain pipe water stop pad of the present embodiment will be described with reference to FIG.
Fig.5 (a) is sectional drawing which shows the structure of the water stop pad similar to FIG.3 (b).
The drain pipe water stop pad 20 is laminated with a disk-shaped water-soluble paper 21 having the same outer diameter as the drainage standpipe 101 and a water-soluble resin film 22 on the upper surface of the water-soluble paper 21 by pressure heat welding or the like. (Laminated state) and a waterproof (for example, silicon-based) adhesive 23 applied to the peripheral portion of the water-soluble resin film 22 that contacts the step 102a of the joint 102, and a protective sheet for protecting the adhesive 23 24.

The water-soluble resin film 22 has more stable solubility in water than paper or water-soluble paper, but is inconvenient to handle because it is in the form of a film and is not rigid. Further, there is a drawback that elongation occurs when subjected to water pressure, and this elongation becomes an error in lowering the water level in the full water test.
By laminating a water-soluble resin film on water-soluble paper as in this embodiment, rigidity can be given and handling can be facilitated, and elongation during water pressure can be suppressed to reduce errors during testing.

  In the full water state, the water-soluble resin film first melts in water, and then the water-soluble paper dissolves, so that the time during which the full water state can be maintained, that is, the test time can be extended.

  In the present embodiment, the water-soluble paper released downstream of the drainage stack 101 after the full water test temporarily stays on the downstream side in the drainage system as a piece that is not melted. Is very unlikely to clog the drainage system. Further, since the water-soluble resin film dissolves in water, it does not clog the drainage system.

In this embodiment, a water-soluble film is laminated on one side of the water-soluble paper, but it may be laminated on both sides. If it does in this way, even if it attaches a water stop pad accidentally, it will have no trouble. In addition, the water-soluble paper and water-soluble resin film are laminated in one set, but the water-soluble resin film may be composed of a plurality of layers. May be.
By doing so, the strength can be further strengthened, and the melting time, that is, the time during which the full water test can be performed can be further extended.

Further, the adhesive 23 may be applied to the lower surface of the water-soluble paper 21 as shown in FIG.
Further, the drain water stop pad configured in this way may be attached to the joint 102 and integrated as in the case of the first embodiment. It may be attached to the joint.

(Third embodiment)
The drain pipe water stop pad of this embodiment is demonstrated using FIG. 6, referring FIG.
6A and 6B are diagrams showing the configuration of the drain pipe water stop pad, FIG. 6A is a perspective view, and FIG. 6B is a cross-sectional view similar to the above.
The drain pipe water stop pad 30 is a base material such as paper or water-soluble paper or water-soluble resin film described in the first embodiment, or a multilayer body of water-soluble paper and water-soluble resin film described in the second embodiment. 31 is sandwiched between two ring-shaped synthetic resin resin plates 32 and 33, and a waterproof adhesive 34 is applied to the periphery of the resin plate 33.

In this case, the outer and inner diameters of the resin plates 32 and 33 are equal to the outer and inner diameters of the drainage stack 101, respectively, and the adhesive 34 is also applied with these dimensions.
The resin plates 33 and 34 are integrated at the outer edge portion by a heat welding method such as ultrasonic welding.

Thus, the intensity | strength of a water distribution pipe water stop pad can be improved by pinching | interposing base materials, such as a water-soluble paper, with a resin board. This facilitates storage and handling.
Moreover, since the adhesive strength may be low as the strength of the water distribution pipe water stop pad increases, an adhesive that can ensure waterproofness can be preferentially selected.

Note that the adhesive 34 may be applied to the lower surface of the resin plate 32 as in the second embodiment described above.
Further, the drain water stop pad configured in this way may be attached to the joint 102 and integrated as in the case of the first embodiment. It may be attached to the joint.

(Fourth embodiment)
The drain pipe water stop pad of this embodiment is demonstrated using FIG. 7, referring FIG.
7A and 7B are diagrams showing the configuration of the drain pipe water stop pad, FIG. 7A is a perspective view, and FIG. 7B is a cross-sectional view similar to the above.
The drain pipe waterproof pad 40 is a base material such as paper, water-soluble paper, or water-soluble resin film described in the first embodiment, or a multilayer body of water-soluble paper and water-soluble resin film described in the second embodiment. Alternatively, a ring-shaped water expansion rubber 42 is bonded to the base material 41 sandwiched by the resin plates described in the third embodiment with an adhesive 43, and a waterproof adhesive is attached to the peripheral portion of the water expansion rubber 43. 34 is applied.

  The water-swelling rubber 43 is a composite material of a highly water-absorbing polymer and rubber used in disposable diapers and sanitary products, and the hydrophilic portion in the rubber is separated from water molecules by contacting with water on the sealing effect by elasticity. It combines to cause volume expansion and has a secondary sealing effect, and is used for waterproofing automobiles and the like.

  With this configuration, the water expansion rubber 42 absorbs water and expands in volume when the above-mentioned full condition is reached, so that the waterproof effect described in the first embodiment can be further enhanced, and the water expansion Since the rubber 42 presses the substrate 41, the strength against water pressure can be increased.

  According to the drainage water stop pad and the drainage stand joint according to the present invention, there is an effect that the test for confirming water tightness can be simplified, and in addition to drainage construction of buildings such as apartments and buildings, drainage construction of ordinary houses It is also useful for.

It is a figure which shows the full water test method by the drain pipe water stop pad and joint of this invention. It is a figure which shows the structure of the joint for drainage stacks of this invention, (a) shows the case where a water stop pad is attached to a drainage stack, and (b) shows the case where a water stop pad is attached to a drainage horizontal branch pipe, respectively. . It is a figure which shows the structure of 1st Embodiment of the drain pipe water stop pad of this invention, (a) is a perspective view, (b) is sectional drawing cut | disconnected by the vertical surface containing the central axis of the pad of (a) Indicates. It is a figure which shows the state which attached the drain pipe water stop pad to the drain stand pipe. It is a figure which shows the structure of 2nd Embodiment of the drain pipe water stop pad of this invention, Comprising: It is sectional drawing similar to the above, Comprising: When (a) attaches to a joint and (b) attaches to a pipe Show. It is a figure which shows the structure of 3rd Embodiment of the drain pipe water stop pad of this invention, (a) is a perspective view, (b) shows sectional drawing similar to the above. It is a figure which shows the structure of 4th Embodiment of the drain pipe water stop pad of this invention, (a) is a perspective view, (b) shows sectional drawing similar to the above. It is a figure for demonstrating the conventional full water test method.

Explanation of symbols

1, 10, 20, 30, 40 Drain pipe waterproof pad 11, 31, 41 Base material such as water-soluble paper, water-soluble resin film 12, 23, 34, 43, 44 Adhesive 13, 24 Protective sheet 21 Water-soluble paper 22 Water-soluble resin film 32, 33 Resin plate 42 Water expansion rubber 101 Drainage pipe 102 Drainage pipe joint 102a, 102c Step

Claims (7)

A drainage pipe water stop pad interposed between the joints connecting the drainage stacks and the drainage side branch pipes, and the drainage standpipe or the drainage side branch pipes,
The drainage pipe water stop pad is composed of a disk-shaped paper having substantially the same outer dimensions as the drainage standpipe or drainage horizontal branch pipe, and a waterproof adhesive is attached to the outer edge portion that comes into contact with the joint step. Drain pipe water stop pad, characterized by being applied. A drainage pipe water stop pad interposed between the joints connecting the drainage stacks and the drainage side branch pipes, and the drainage standpipe or the drainage side branch pipes,
The drainage pipe water stop pad is made of a disc-shaped water-soluble paper having substantially the same outer dimensions as the drainage standpipe or the drainage horizontal branch pipe, and has a waterproof adhesion to an outer edge part that comes into contact with the joint step part. Drain pipe water stop pad characterized by being coated with an agent. A drainage pipe water stop pad interposed between the joints connecting the drainage stacks and the drainage side branch pipes, and the drainage standpipe or the drainage side branch pipes,
The drainage pipe water stop pad is composed of a disc-shaped water-soluble resin film having substantially the same outer dimensions as the drainage standpipe or the drainage lateral branch pipe, and has a waterproof property at an outer edge part that comes into contact with the stepped part of the joint. Drain pipe water stop pad, characterized by being coated with an adhesive. A drainage pipe water stop pad interposed between the joints connecting the drainage stacks and the drainage side branch pipes, and the drainage standpipe or the drainage side branch pipes,
The drainage pipe water stop pad is formed by laminating a water-soluble resin film on a disc-shaped water-soluble paper having substantially the same outer dimensions as the drainage standpipe or the drainage horizontal branch pipe. A drain pipe water stop pad, wherein a waterproof adhesive is applied to an outer edge portion of the water-soluble paper or water-soluble resin film in contact therewith.   A portion of the drainage pipe water stop pad excluding the adhesive is configured by being sandwiched by two ring-shaped synthetic resin plates having substantially the same dimensions as the drainage standpipe or the drainage side branch pipe and the inner diameter, The drain pipe water stop pad according to any one of claims 1 to 4, wherein a waterproof adhesive is applied to an outer edge portion of the synthetic resin plate that contacts the stepped portion of the joint. .   A ring-shaped water expansion rubber having substantially the same dimensions as the outer shape and inner diameter of the drainage standpipe or drainage side branch pipe is further bonded to the portion where the adhesive of the drainage pipe water stop pad is applied, The drain pipe water stop pad according to any one of claims 1 to 5, wherein a waterproof adhesive is applied to an outer edge portion of the water expansion rubber that contacts the step portion of the joint.   A drainage stack joint for connecting drainage stacks and drainage horizontal pipes, wherein the drainage pipe water stop pad according to any one of claims 1 to 6 is bonded to a step portion of the joint. A joint for drainage stacks.

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