JP7402063B2 - Drainage collection joint - Google Patents

Description

The present invention relates to a drainage collection joint installed on the lowest floor of a building.

Buildings such as multi-story apartment complexes and hotels usually have a drainage joint that connects a standpipe for draining wastewater from each floor and a side pipe for discharging wastewater from residential units on each floor. It is provided. Additionally, in recent years, there has been an increase in the adoption of bottom-floor merging systems that merge wastewater from the bottom-floor residential units into a standpipe. In the case of the lowest floor merging system, the collective joint installed on the lowest floor is connected to the horizontal main pipe located below the lowest floor slab via leg joints.

For example, Patent Document 1 describes an upper pipe connection that is an inlet for drainage, a lower pipe connection that is an outlet for drainage, and a branch pipe connection that is located between the upper pipe connection and the lower pipe connection. Disclosed is a drainage collection joint in which the upper pipe connection part and the lower pipe connection part are integrally and inseparably formed, and includes a water collection chamber into which wastewater flows from the upper pipe connection part and the branch pipe connection part.

By the way, the drainage collection joint has a problem in that the noise generated is larger than that of a stand pipe or a side branch pipe, because the drainage water is merged, the direction changed, and the energy is reduced inside the joint. In order to solve this problem, for example, it is possible to cover the entire outer surface of the drainage joint by laminating multiple sound insulation sheets together, but since the outer surface of the drainage joint has a complex three-dimensional shape, However, there is a problem in that cutting out, wrapping, and pasting the sound insulating sheet becomes complicated.

Therefore, for example, Patent Document 2 discloses an upper sound insulating cover having a three-dimensional shape that can cover a portion above the center of the side branch pipe connection, and a portion below the center of the side branch pipe connection. A sound insulation cover is disclosed that includes a lower sound insulation cover having a coverable three-dimensional shape.

Patent No. 4471712 Japanese Patent Application Publication No. 2013-117245

According to the above-mentioned patent document 1, the lower pipe connection part is cut at an appropriate point from the lower end to shorten the length and the connection distance with the leg joint is shortened. It is said that it is possible to make the space more compact when connecting horizontal main pipes through joints.

By the way, Patent Document 1 does not describe anything about noise in the drainage collection joint, but if you try to apply the sound insulation cover of Patent Document 2 to the one in Patent Document 1, the cut length of the lower pipe connection part Accordingly, it is necessary to separately manufacture a lower sound insulating cover having a three-dimensional shape, which may increase costs.

On the other hand, in Patent Document 1, when the slab thickness of the floor slab is thick, the upper pipe connection part and the lower pipe connection part are formed inseparably, so if you try to extend the lower pipe connection part, the drainage The entire collective joint must be manufactured separately, which may increase costs. In addition, in Patent Document 1, it is possible to pipe an extension pipe between the lower pipe connection part and the leg joint, but if the connection part between the lower pipe connection part and the extension pipe is flange-shaped, the patent There are problems in that it becomes difficult to cover the lower sound insulating cover of Document 2, and it becomes complicated to attach the sound insulating sheet.

The present invention has been made in view of these points, and its purpose is to be able to cope with both short and long connection distances with leg joints, and to easily implement sound insulation measures. The objective is to provide a drainage collection joint that can be used.

In order to achieve the above object, in the drainage collection joint according to the present invention, the main body into which the drainage water flows and the connecting vertical pipe through which the drainage water flows to the leg joint are separated, and the connection distance is adjusted by the connecting vertical pipe. That's what I do.

Specifically, the present invention provides an upper connection section that is provided only on the lowest floor of a building and can be connected to a standpipe that drains drainage from the upper floor, and a side branch pipe that is connected to a side branch pipe that is placed on the lowest floor slab. A main body made of resin having a possible branch pipe connection part, and a connecting vertical pipe made of resin that connects the main body to a leg joint connected to a horizontal main pipe arranged below the bottom floor slab. The target is drainage collection joints equipped with .

A cylindrical lower connecting part is formed below the branch pipe connecting part in the main body part, and the connecting vertical pipe is separate from the main body part, has a straight outer shape, and has a straight shape inside. A resin pipe with no attached parts, the upper end of which is inserted into the lower connection part, and the lower end of which is inserted into the leg joint through a through hole formed in the lowest floor slab. The apparatus is characterized in that it further includes a cylindrical sound insulation and vibration damping body which is directly connected to the connecting vertical pipe and covers the connecting vertical pipe, and a lower end of the connecting vertical pipe protrudes from the sound insulation and vibration damping body .

According to this configuration, when the connection distance between the main body and the leg joint is short, by cutting the connecting vertical pipe that is separate from the main body, the leg joint can be connected below the bottom floor slab. When the horizontal main pipe is connected via the main pipe, the space can be made more compact.

On the other hand, if the connection distance between the main body and leg joints is long, such as when the slab thickness of the lowest floor slab is thick, select a connecting vertical pipe with a length commensurate with the slab thickness, and connect the bottom of the main body. By inserting the main body into the leg joint, the main body and the leg joint can be connected without separately manufacturing a drainage collection joint. Therefore, increase in cost can be suppressed.

In addition, the present invention provides an upper connecting part that is provided only on the lowest floor of a building and can be connected to a standpipe that drains drainage water from the upper floor, a generally cylindrical gathering part located below the upper connecting part, and a main body made of resin that has a branch pipe connection part that can be connected to the horizontal branch pipe placed on the bottom floor slab, and a leg part that is connected to the horizontal main pipe placed below the bottom floor slab. A drainage collection joint comprising a connecting vertical pipe made of resin that connects the joint and the main body, wherein a cylindrical lower connecting part is formed below the branch pipe connecting part in the main body. , the connecting vertical pipe is a resin pipe that is separate from the main body and has a straight outer shape, and its upper end is inserted into the lower connecting part, while its lower end is connected to the bottom floor. It is directly connected to the leg joint through a through hole formed in the slab, and the inner circumferential surface of the gathering portion and the inner circumferential surface of the lower connecting portion are connected via an annular stepped surface. The inner circumferential surface of the connecting vertical tube is flush with the inner circumferential surface of the gathering part, and the upper end of the connecting vertical tube is in contact with the step surface, and a cylindrical surface covering the connecting vertical tube is formed. The apparatus further includes a sound insulation and vibration isolator having a shape, and a lower end of the connecting vertical pipe protrudes from the sound insulation and vibration insulation body .

As described above, according to the drainage collection joint according to the present invention, it is possible to cope with cases where the connection distance with the leg joint is short or long, and it is possible to easily take sound insulation measures.

1 is a diagram schematically showing a drainage collection joint according to Embodiment 1 of the present invention. FIG. 3 is a diagram schematically showing the main body and the connecting vertical pipe, in which (a) shows the state before the main body and the connecting vertical pipe are connected, and FIG. Shows the state after connecting the pipe. FIG. 3 is a perspective view schematically showing a sound insulation cover. It is a figure which shows typically the installation state of the drainage collection joint in case the connection distance of a main-body part and a leg joint is short. It is a figure which shows typically the installation state of the drainage collection joint when the connection distance of a main-body part and a leg joint is long. FIG. 3 is a diagram schematically showing a drainage collection joint according to a second embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated based on drawing.

(Embodiment 1)
-overall structure-
FIG. 1 is a diagram schematically showing a drainage collection joint 1 according to the present embodiment. This drainage collection joint 1 is installed on the lowest floor of a multi-story building such as an apartment complex or a hotel, and is used to collect drainage from the upper floor flowing down in the standpipe 14, and from side branches placed on the slab 12 on the lowest floor. This pipe is for collecting the waste water flowing inside the pipe 15 and discharging it to the horizontal main pipe 16 arranged below the lowest floor slab 12 (see FIGS. 4 and 5). The drainage collection joint 1 includes a main body part 2 made of resin to which a standpipe 14 and a horizontal branch pipe 15 can be connected, and a connecting vertical pipe 3 that connects the main body part 2 and a leg joint 17 connected to a horizontal main pipe 16. , and a sound insulating cover 4 that covers the main body portion 2 and the connecting vertical pipe 3.

FIG. 2 is a diagram schematically showing the main body part 2 and the connecting vertical pipe 3. FIG. 2(a) shows the state before the main body part 2 and the connecting vertical pipe 3 are connected, and FIG. ) shows the state after the main body part 2 and the connecting vertical pipe 3 are connected. As shown in FIG. 2, the main body part 2 includes a cylindrical upper connecting part 5 and a substantially cylindrical gathering part 6 located below the upper connecting part 5, which are spaced apart by 90 degrees in the horizontal direction. It has three cylindrical branch pipe connecting parts 8 extending in three directions from the collecting part 6 and a cylindrical lower connecting part 7 located below the collecting part 6. The main body portion 2 is formed from a fire-resistant thermally expandable resin composition containing thermally expandable graphite in a proportion of 1 to 10 parts by weight based on 100 parts by weight of a polyvinyl chloride resin.

As shown in FIGS. 4 and 5, a standpipe 14 is connected to the upper connection part 5, and a horizontal branch pipe 15 is connected to the branch pipe connection part 8. Note that when the number of lateral branch pipes 15 is less than three, the unused branch pipe connection portions 8 are covered with a lid (not shown) or the like. As shown in FIG. 2(a), the lower connecting part 7 is formed thinner than the upper connecting part 5 and the collecting part 6, and its inner diameter is larger than the inner diameter of the upper connecting part 5 and collecting part 6. has been done. Therefore, the inner circumferential surface of the lower connecting portion 7 is connected to the inner circumferential surface of the gathering portion 6 via the annular stepped surface 7a.

The connecting vertical tube 3 is a resin tube that is separate from the main body portion 2 and has a straight outer shape. More specifically, the connecting vertical pipe 3 is a thermally expandable three-layer structure having an inner layer and an outer layer made of hard polyvinyl chloride, and an intermediate layer made of a vinyl chloride resin composition containing thermally expandable graphite. It's a pipe. The connecting vertical pipe 3 has an inner diameter that is approximately equal to the inner diameter of the upper connecting portion 5 and the gathering portion 6, and an outer diameter that is slightly smaller than the inner diameter of the lower connecting portion 7, as shown in FIG. 2(b). As shown, it can be inserted into the lower connecting portion 7 until its upper end touches the stepped surface 7a. As described above, since the inner diameter of the connecting vertical pipe 3 is approximately equal to the inner diameter of the upper connecting part 5 and the collecting part 6, when the connecting vertical pipe 3 is inserted into the lower connecting part 7, the upper connecting part 5 and the collecting part 6 The inner circumferential surface and the inner circumferential surface of the connecting vertical pipe 3 are flush with each other. The vertical connecting pipe 3 is shipped from the factory with its upper end inserted into the lower connecting part 7, as shown in FIG. 2(b). Note that the method of connecting the lower connecting portion 7 and the connecting vertical pipe 3 is not particularly limited, and may include rubber ring bonding using an annular waterproof rubber (not shown), adhesive bonding using an adhesive, and fastening member ( The main body portion 2 and the connecting vertical pipe 3 can be connected by flange joining using a pipe (not shown) or the like.

As shown in FIG. 3, the sound insulation cover 4 includes a main body sound insulation cover (first sound insulation body) 9 that covers the main body 2 and a vertical pipe sound insulation cover that covers the connecting vertical pipe 3 and is separate from the main body sound insulation cover 9. It has a cover (second sound insulator) 10. The main body sound insulating cover 9 has an upper and lower two-part structure, and includes an upper sound insulating cover 9a having a three-dimensional shape corresponding to the outer shape of the upper half of the main body 2 (above the cylindrical axis of the branch pipe connection part 8), and a main body part and a lower sound insulating cover 9b having a three-dimensional shape corresponding to the outer shape of the lower half (below the cylindrical axis of the branch pipe connection part 8) of the pipe connection part 8.

In this way, by making the main body sound insulating cover 9 into an upper and lower two-part structure, the main body 2 can be easily sandwiched between the upper and lower sound insulating covers 9a and 9b. 2 can be covered. Further, the vertical pipe sound insulating cover 10 is a straight-shaped sound insulating pipe, and the connecting vertical pipe 3 can be easily covered by simply inserting the straight-shaped connecting vertical pipe 3 into the vertical pipe sound insulating cover 10. It has become.

The upper sound insulation cover 9a, the lower sound insulation cover 9b, and the vertical pipe sound insulation cover 10 are made of a resin material highly filled with an inorganic filler such as calcium carbonate. Specifically, it is preferable to use a resin composition containing 300 to 600 parts by weight of an inorganic filler based on 100 parts by weight of olefin resin. In this way, a resin material highly filled with an inorganic filler exhibits a sound insulation effect due to its increased weight per unit volume.

The drainage collection joint 1 configured as described above is installed at the bottom of the main body 2 and the connecting vertical pipe 3 with the sound insulating cover 4 as shown in FIGS. 4 and 5 at a factory or construction site. When the connecting vertical pipe 3 and the lower connecting part 7 are inserted into the through hole 13 formed in the floor slab 12, the connection between the connecting vertical pipe 3 and the lower connecting part 7 and the hole wall that partitions the through hole 13 It is installed on the lowest floor by pouring mortar 18 on it. Then, the standpipe 14 is connected to the upper connection part 5 through the connection part 19, the horizontal branch pipe 15 is connected to the branch pipe connection part 8 through the connection part 20, and the vertical pipe 3 is connected to the vertical pipe 3. By connecting the lower end to the leg joint 17, a state is created in which the drainage from the upper floor and the drainage from the dwelling unit on the lowest floor can be collected and discharged to the horizontal main pipe 16. Note that the leg joint 17 may be made of metal or resin, and the method of connecting the leg joint 17 and the connecting vertical pipe 3 is not particularly limited, and adhesive bonding, flange bonding, or the like may be employed.

In this way, the drainage collection joint 1 is installed on the lowest floor with the lower connecting part 7 formed below the branch pipe connecting part 8 buried in the lowest floor slab 12. Since the bottom of the branch pipe 15 is lowered, the drainage system on the lowest floor slab 12 can be housed more compactly.

In addition, in the drainage collective joint 1 of the present embodiment, the main body 2 is made of a fire-resistant thermally expandable resin composition, and the connecting vertical pipe 3 is made of a vinyl chloride resin composition containing thermally expandable graphite. Since it has a layer, for example, even if a fire breaks out from below the bottom floor slab 12, the lower connecting portion 7 and the connecting vertical pipe 3 will expand greatly, forming a fireproof layer inside the through hole 13. Therefore, the inflow of heat to the upper side of the lowest floor slab 12 can be suppressed.

Furthermore, in the main body part 2 and the connecting vertical pipe 3, there is a possibility that louder noise will be generated compared to the vertical pipe 14 and the horizontal branch pipe 15 because drainage water is merged, direction changed, and energy is reduced. In the drainage collection joint 1 of this embodiment, the upper sound insulation cover 9a, the lower sound insulation cover 9b, and the vertical pipe sound insulation cover 10 are placed over the main body 2 and the connecting vertical pipe 3, thereby reliably reducing noise caused by drainage. be able to.

-Construction method-
Next, the construction method of the drainage collection joint 1 of this embodiment will be explained separately for cases in which the connection distance between the main body part 2 and the leg joints 17 is short and long.

<When the connection distance between the main body and leg joints is short>
First, if the connection distance between the main body part 2 and the leg joints 17 is short due to the thickness of the lowest floor slab 12 being thin, etc., connect the connecting vertical pipe 3 of standard length to the bottom of the main body part 2. The drainage collection joint 1 inserted into the connection part 7 and bonded with adhesive is carried to the construction site.

Then, the connecting vertical pipe 3 is cut to an optimal length depending on the distance between the leg joint 17 and the main body part 2. Here, for example, in the case of a drainage collection joint in which the main body part 2 and the connecting vertical pipe 3 are integrally formed and a flange is formed at the lower end of the connecting vertical pipe 3, the connecting vertical pipe 3 is connected halfway. If it is cut at , the flange will be lost, making connection with the leg joint 17 difficult. On the other hand, in the drainage collection joint 1 of this embodiment, since the straight-shaped connecting vertical pipe 3 is used, the connection with the leg joint 17 can be made in the same manner after cutting as before cutting.

Next, the vertical pipe sound insulating cover 10 is cut according to the cutting length of the connecting vertical pipe 3 and the connection allowance between the connecting vertical pipe 3 and the leg joint 17. Specifically, the length is determined by subtracting the connection allowance between the connecting vertical pipe 3 and the leg joint 17 from the length of the portion of the connecting vertical pipe 3 exposed from the lower connecting part 7 after cutting. , cut the vertical pipe sound insulation cover 10.

Then, the upper sound insulation cover 9a and the lower sound insulation cover 9b cover the main body part 2 so as to sandwich it vertically, and the vertical pipe sound insulation cover 10 is placed over the lower end of the straight connecting vertical pipe 3. Next, with the connecting vertical pipe 3 and the lower connecting part 7 inserted into the through hole 13 formed in the lowest floor slab 12, a hole that partitions the connecting vertical pipe 3 and the lower connecting part 7 from the through hole 13 is inserted. Mortar 18 is placed between the wall and the wall. Thereafter, the standpipe 14 and the horizontal branch pipe 15 are connected to the upper connection part 5 and the branch pipe connection part 8 via the connection parts 19 and 20, respectively, and the lower end of the connection vertical pipe 3 is connected to the leg joint 17. .

As described above, according to the construction method of the drainage collection joint 1 of the present embodiment, the leg can be installed under the bottom floor slab 12 by simply cutting the connecting vertical pipe 3 and the vertical pipe sound insulating cover 10. When the horizontal main pipe 16 is connected via the joint 17, the space can be made compact, and sound insulation measures can be taken according to the connection distance between the leg joint 17 and the main body part 2.

<When the connection distance between the main body and leg joints is long>
On the other hand, if the connection distance between the main body part 2 and the leg joint 17 is long due to the thick slab thickness of the lowest floor slab 12, etc., the leg joint 17 is longer than the standard length connecting vertical pipe 3. A connecting vertical pipe 3 having a length matching the distance between the main body part 2 and the main body part 2 is inserted into the lower connecting part 7 of the main body part 2 and adhesively joined. Further, a vertical pipe sound insulating cover 10 having a length obtained by subtracting the connection allowance between the connecting vertical pipe 3 and the leg joint 17 from the length of the portion of the connecting vertical pipe 3 exposed from the lower connecting portion 7 is prepared. do.

Then, the upper sound insulation cover 9a and the lower sound insulation cover 9b cover the main body part 2 so as to sandwich it vertically, and the vertical pipe sound insulation cover 10 is placed over the lower end of the straight connecting vertical pipe 3. Next, with the connecting vertical pipe 3 and the lower connecting part 7 inserted into the through hole 13 formed in the lowest floor slab 12, a hole that partitions the connecting vertical pipe 3 and the lower connecting part 7 from the through hole 13 is inserted. After placing mortar 18 between the wall and the wall, the vertical pipe 14 and the horizontal branch pipe 15 are connected to the upper connecting part 5 and the branch pipe connecting part 8 through the connecting parts 19 and 20, respectively, and the connecting vertical pipe 3 is connected to the upper connecting part 5 and the branch pipe connecting part 8. Connect the lower end of the leg joint 17 to the leg joint 17.

Here, for example, in the case of a drainage collection joint in which the main body part 2 and the connection vertical pipe 3 are integrally formed, it is not possible to lengthen only the connection vertical pipe 3, and the drainage collection having a long connection vertical pipe 3 is not possible. Either a joint must be manufactured separately or an extension pipe (not shown) or the like must be connected to the lower end of the connecting vertical pipe 3. If the connection point between the connecting vertical pipe 3 and the extension pipe becomes flange-like, it may become difficult to cover the vertical pipe sound insulating cover 10 over the connecting vertical pipe 3 from below. On the other hand, in the drainage collection joint 1 of this embodiment, by selecting the connecting vertical pipe 3 with a length commensurate with the slab thickness and inserting it into the lower connecting part 7 of the main body part 2, the main body part 2 and the leg The joint 17 can be easily connected. Moreover, since the straight-shaped connecting vertical tube 3 is used, the vertical tube sound insulating cover 10 can be easily placed over the connecting vertical tube 3 from below without the flange or the like getting caught.

(Embodiment 2)
This embodiment differs from Embodiment 1 in that a sound-insulating and vibration-proofing sheet 11 is used together with the sound-insulating cover 4. Hereinafter, points different from Embodiment 1 will be explained.

As mentioned above, the main body part 2 and the connecting vertical pipe 3 may generate louder noise than the vertical pipe 14 and the horizontal branch pipe 15, and the connecting vertical pipe 3 and the lower connecting vertical pipe buried in the bottom floor slab 12 may generate noise. There is a possibility that the vibration of the side connecting portion 7 propagates through the bottom floor slab 12 and is transmitted to the living space and the like. Therefore, the parts that are not buried in the bottom floor slab 12 (the upper connection part 5, the gathering part 6, the branch pipe connection part 8, and the parts of the connection vertical pipe 3 that protrude below the bottom floor slab 12) sound insulation measures are taken for the parts buried in the bottom floor slab 12 (the lower connection part 7 and the part of the connection vertical pipe 3 buried in the bottom floor slab 12). It makes sense to take measures to shake things up.

Therefore, in this embodiment, the parts that are not buried in the bottom floor slab 12 are covered with the sound insulation cover 4 as in the first embodiment, while the parts that are buried in the bottom floor slab 12 are covered with the sound insulation cover 4. Unlike the first embodiment, a sound-insulating and vibration-proofing sheet 11 such as a rock wool sheet, a glass wool sheet, or a steel wool sheet is wrapped around the sheet.

Specifically, as shown in FIG. 6, the upper connection part 5, the gathering part 6, and the branch pipe connection part 8 are cut by cutting the parts corresponding to the lower connection part 7 in the upper sound insulation cover 9a and the lower sound insulation cover 9b. At the same time, a portion of the connecting vertical pipe 3 that projects below the lowest floor slab 12 is covered with a vertical pipe sound insulating cover 10. On the other hand, a sound-insulating and vibration-proofing sheet 11 is wrapped around the portions of the lower connecting portion 7 and the connecting vertical pipe 3 that are buried in the lowest floor slab 12.

As a result, the sound insulation cover 4 can suppress the noise generated due to the merging of drainage water, change of direction, loss of energy, etc., and also prevent vibrations from propagating through the bottom floor slab 12 to living spaces, etc. This can be suppressed by the vibration sheet 11.

(Other embodiments)
The present invention is not limited to the embodiments and may be embodied in various other forms without departing from its spirit or essential characteristics.

In each of the above embodiments, the main body part 2 is formed from a fire-resistant thermally expandable resin composition, and the connecting vertical pipe 3 is a thermally expandable pipe, but the invention is not limited to this. may be made of polyvinyl chloride resin, and a thermally expandable sheet (for example, Fiblock (registered trademark) manufactured by Sekisui Chemical Co., Ltd.) may be wrapped around the main body portion 2 and the connecting vertical pipe 3.

Further, in each of the above embodiments, the main body portion 2 is formed from a fire-resistant thermally expandable resin composition, and the connecting vertical tube 3 is a thermally expandable pipe, but at least one of the lower connecting portion 7 and the connecting vertical tube 3 For example, the main body portion 2 may be made of polyvinyl chloride resin and only the connecting vertical pipe 3 may be a thermally expandable pipe, or only the connecting vertical pipe 3 may be made of a heat-resistant layer. An expandable sheet may be wrapped around it.

Furthermore, in each of the embodiments described above, the present invention is applied to the drainage collection joint 1 having three branch pipe connections 8, but the invention is not limited thereto, and for example, the invention is applied to the drainage collection joint 1 having four branch pipe connections 8, The present invention may be applied to a drainage collection joint 1 having two or less branch pipe connections 8.

Further, in each of the above embodiments, the lower connecting portion 7 is formed thinner than the upper connecting portion 5 and the gathering portion 6, but the present invention is not limited to this. The inner diameter and the outer diameter of the lower connecting part 7 may be made larger than the inner diameter and the outer diameter of the upper connecting part 5 and the collecting part 6.

Further, in the first embodiment, the sound insulation cover 4 is used as the first and second sound insulation bodies, but the invention is not limited to this. For example, sound insulation sheets (not shown) can be used as the first and second sound insulation bodies, and the sound insulation cover 4 is used as the first and second sound insulation bodies. The drainage collection joint 1 may be covered by pasting sheets together.

Further, in the second embodiment, the sound insulation cover 4 and the sound insulation vibration isolation sheet 11 are used in combination, but the present invention is not limited to this, and for example, the drainage collection joint 1 may be covered only with the sound insulation vibration insulation sheet 11.

In this way, the above-described embodiments are merely illustrative in all respects, and should not be construed in a limiting manner. Furthermore, all modifications and changes that come within the scope of equivalents of the claims are intended to be within the scope of the present invention.

According to the present invention, it can be applied to cases where the connection distance with the leg joint is short or long, and sound insulation measures can be easily taken, so it can be applied to a drainage collection joint installed on the lowest floor of a building. It is extremely beneficial.

1 Drainage collection joint 2 Main body part 3 Connection vertical pipe 5 Upper connection part 7 Lower connection part 8 Branch pipe connection part 9a Upper sound insulation cover (first sound insulation body)
9b Lower sound insulation cover (first sound insulation body)
10 Vertical pipe sound insulation cover (second sound insulation body)
11 Sound insulation and vibration insulation sheet (second sound insulation body)
12 Bottom floor slab 13 Through hole 14 Stand pipe 15 Side branch pipe 16 Side main pipe 17 Leg joint

Claims (2)

It is provided only on the lowest floor of the building and has an upper connection part that can be connected to a standpipe that drains drainage from the upper floor, and a branch pipe connection part that can be connected to a side pipe placed on the bottom floor slab. A drainage collection joint comprising a main body made of resin, and a connecting vertical pipe made of resin that connects the main body to a leg joint connected to a horizontal main pipe arranged below the bottom floor slab, ,
A cylindrical lower connection part is formed below the branch pipe connection part in the main body part,
The connecting vertical pipe is a resin pipe that is separate from the main body, has a straight outer shape, and has no internal accessories, and has an upper end inserted into the lower connecting part. , whose lower end is directly connected to the leg joint through a through hole formed in the lowest floor slab,
It further includes a cylindrical sound- insulating and vibration-proofing body that covers the connecting vertical pipe,
A drainage collection joint characterized in that the lower end of the connecting vertical pipe protrudes from the sound and vibration insulator . An upper connecting part that is provided only on the lowest floor of a building and can be connected to a standpipe that drains drainage from the upper floor, a generally cylindrical collecting part located below the upper connecting part, and a bottom floor slab. A main body made of resin that has a branch pipe connection part that can be connected to a horizontal branch pipe located above, a leg joint that is connected to a horizontal main pipe located below the bottom floor slab, and the main body. A drainage collection joint comprising a resin connecting vertical pipe connecting the
A cylindrical lower connection part is formed below the branch pipe connection part in the main body part,
The connecting vertical pipe is a resin pipe that is separate from the main body and has a straight outer shape, and its upper end is inserted into the lower connecting part, while its lower end is connected to the bottom floor slab. directly connected to the leg joint through a through hole formed in the leg joint,
The inner circumferential surface of the gathering portion and the inner circumferential surface of the lower connecting portion are connected via an annular stepped surface,
The inner peripheral surface of the connecting vertical pipe is flush with the inner peripheral surface of the gathering part, and the upper end of the connecting vertical pipe is in contact with the stepped surface,
It further includes a cylindrical sound- insulating and vibration-proofing body that covers the connecting vertical pipe,
A drainage collection joint characterized in that the lower end of the connecting vertical pipe protrudes from the sound and vibration insulator .

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