JP2001348925A - Drain pipe joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain pipe joint convenient for piping of a horizontal branch pipe in a troublesome toilet having the piping of the horizontal branch pipe in the toilet having a washhand basin in addition to a water closet since the drain pipe joint usually having a miscellaneous drain socket with a small diameter on the upper side and having a soil water socket with a large diameter on the lower side is not provided. SOLUTION: The drain pipe joint is divided into an upper joint 20 having a miscellaneous drain horizontal branch pipe socket 22 with nominal 50 or less and a lower joint 30 having a soil water horizontal branch pipe socket 32 with nominal 80 or more, and it is so constituted that the upper joint 20 and lower joint 30 are connected to each other to use.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage pipe joint for connecting a drainage horizontal branch pipe of each floor to a drainage stack in a drainage path of a high-rise apartment or the like.

[0002]

2. Description of the Related Art Generally, the above-mentioned drainage pipe joint has an upper receiving port for connecting an upstream standing pipe, a lower insertion port for connecting to a downstream standing pipe, and a connecting port for connecting a horizontal branch pipe. It has one or more horizontal branch pipe receptacles. Particularly, in a so-called drainage joint fitting having two or more horizontal branch pipe receptacles, a horizontal branch pipe for draining drainage (sewage) from a toilet bowl is usually connected to the horizontal branch pipe receptacle,
Alternatively, a horizontal branch pipe for draining so-called miscellaneous drainage from a kitchen sink, a vanity stand, a bathroom, a drain pan of a washing machine, or the like is connected. Sewage has a large amount of drainage at one time and may contain solid matter. Therefore, a horizontal branch pipe for wastewater is generally larger than the horizontal branch pipe for miscellaneous drainage. For this reason, one of the plurality of horizontal branch pipe receptacles is a receptacle for sewage, for example, a receptacle having a diameter (nominal 80) capable of connecting a horizontal branch pipe having a diameter of 80 mm, and the other receptacle is for gray water drainage. The receiving port has a diameter (nominal 50) to which a horizontal branch pipe having a diameter of, for example, 65 mm or less can be connected.

[0003] As mentioned above, wastewater has a large flow rate,
Since there are cases where solid matter is contained, it is desirable that the horizontal branch pipe (drainage passage) for draining the solid matter be as short as possible. For this reason, the drainage fitting is usually installed at a position close to the toilet (for example, behind the toilet with a wall of the toilet). Depending on the type of toilet, sewage is drained through a horizontal branch pipe (pipe connecting pipe) above the floor (floor drainage type) or drained through a horizontal branch pipe below the floor (floor drainage type) .
In the case of a floor drain type, a horizontal branch pipe receiving port for sewage is often arranged behind the toilet bowl across the wall of the toilet and above the floor of the toilet. In some cases, a drainpipe is installed at the corner of the toilet.

On the other hand, in the case of the floor drainage type, the horizontal branch pipe penetrates the floor from the toilet bowl to the floor, and is drained by the horizontal branch pipe piped under the floor. It is arranged on the lower side. On the other hand, the horizontal branch pipe for miscellaneous drainage is usually connected to a receptacle through a below-floor pipe like a drain pipe in a bathroom. For this reason, when piping a horizontal branch pipe for sewage on the floor, the drainage port for sewage having a relatively large diameter is located above the graywater drainage port having a relatively small diameter in the pipe axis direction. When the arranged drainage pipe joint is used and the horizontal branch pipe for sewage is piped under the floor, the receptacle for sewage and the receptacle for miscellaneous drainage are arranged at the same level (the same position in the pipe axis direction). Drainage fittings were used.

[0005]

However, in recent years, a small number of small hand-washing machines have been added to toilets in general households and buildings in addition to toilets. In addition, the toilet mentioned here means a space for one person in which one toilet is arranged. In such a toilet, in order to efficiently set the piping route of the horizontal branch pipe for handwasher drainage (for miscellaneous drainage) from the handwasher to the drainage fitting,
In some cases, it may be convenient to pipe the horizontal branch pipe for draining the handwasher below the floor instead of piping below the horizontal branch pipe for sewage. It is desirable to arrange above the receiving port. However, conventionally, for example, Japanese Patent Application Laid-Open No. 10-25963
As disclosed in Japanese Patent Publication No. 0, there has been provided a drainage pipe joint provided with a wastewater receiving port on the upper side and a drainage receiving port on the lower side. There is no provision of a device in which the wastewater drainage port is disposed above the relatively large-diameter drainage port in the pipe axis direction. For this reason, it was necessary to perform piping to lower the height of the horizontal branch pipe for sewage to the same level as that of the horizontal branch pipe for sewage, for example, by piping the horizontal branch pipe for draining the hand washing machine under the floor. An object of the present invention is to provide a drainage pipe joint suitable for connecting a horizontal branch pipe in a toilet provided with a hand-washing machine in addition to a toilet bowl, for example.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a drainage pipe joint having the structure described in each of the above claims. Claim 1
According to the described drainage pipe joint, for example, in a toilet in which a handwasher is installed in addition to a toilet, a horizontal branch pipe for draining the handwasher is connected to a receptacle on the upper side in the pipe axial direction, and a horizontal branch pipe for sewage is connected. By connecting to the lower receiving port, both lateral branch pipes can be efficiently piped. The size of the upper horizontal drainage port for miscellaneous drainage is set at 50 or 40 or 30 in consideration of the relatively small amount of drainage from a hand-washing machine or the like.
Alternatively, it can be set to call 25. The size of the lower horizontal sewage pipe receiving port can be set to a call 80 or a call 100 in consideration of a large amount of drainage flowing down at one time.

According to the drainage pipe joint according to the second aspect, the upper joint and the lower joint are prepared in various sizes with respect to the size of the receptacle, and by changing the combination of these, it is possible to use various forms of piping. Therefore, the versatility of the drainage pipe joint can be improved. Further, since the upper joint and the lower joint are of a two-body assembly type that are connected to each other, the mold (or a mold or a molding frame) when the upper joint and the lower joint are manufactured by casting is simplified. Thus, the cost of the drainage pipe joint can be reduced. Furthermore, since the upper joint and the lower joint are divided into two parts, inventory management of these parts is facilitated, and these inventory spaces can be made more efficient. It is possible to promptly respond to an erroneous transmission.

According to the third aspect of the present invention, by adjusting the amount of insertion of the lower spigot of the upper joint into the upper spigot of the lower joint, the pipe axis direction of the miscellaneous drainage receptacle and the sewage receptacle is adjusted. Can be adjusted, so that even if there is a construction error in the height of the lateral branch pipe, this error can be easily absorbed.

According to the drainage pipe joint according to the fourth aspect, the relative position around the pipe axis between the miscellaneous drainage port of the upper joint and the sewage port of the lower joint can be arbitrarily set. It is possible to cope with various piping forms (layouts), and it is possible to enhance the versatility of the drainage pipe joint.

[0010]

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 shows a plumbing example of a toilet T in which one toilet 1 and one handwash 2 are installed. The drainage pipe joint 10 of the present embodiment is used to connect the toilet 1 and the handwasher 2 to the drainage stack 3. The drainage pipe joint 10 of the present embodiment is divided into an upper joint 20 and a lower joint 30. FIG. 3 shows the drainage pipe joint 10 alone. The upper joint 20 has an upper receiving port 21 for connecting the drainage stack 3a on the upstream side to an upper portion thereof. A cylindrical packing (not shown) is mounted on the inner peripheral side of the upper receiving port 21. An upstream drain stack 3a is inserted into the inner peripheral side of the packing, and the drain stack 3a is connected to the upper joint 20. It is connected to the.

A horizontal branch pipe receiving port 22 is provided in the middle of the upper joint 20 in the pipe axis direction. As shown in FIG. 1, the lateral branch pipe 4 from the hand washing machine 2 is connected to the lateral branch pipe receiving port 22. A cylindrical packing (not shown) is also mounted on the inner peripheral side of the lateral branch pipe receiving port 22. The lateral branch pipe 4 is inserted into the inner peripheral side of the packing, and the lateral branch pipe 4 is connected to the upper joint. 20. This horizontal branch pipe 4 has a diameter of 5
A drainage pipe of 0 mm for gray water is used. Therefore,
The horizontal branch pipe receiving port 22 is set to a size (diameter) of a nominal 50 capable of connecting the horizontal branch pipe 4 having a diameter of 50 mm to an inner peripheral side thereof.

The lower joint 30 has an upper receiving port 3 at its upper part.
One. A cylindrical packing 35 is mounted on the inner peripheral side of the upper receiving port 31. This packing 3
The lower joint 23 of the upper joint 20 is inserted into the inner peripheral side of 5, and the upper joint 20 is connected to the lower joint 30.
The packing 35 is similar to the packing attached to the upper receiving port 21 and the lateral branch pipe receiving port 22, and has a plurality of annular tongues 35a to 35a on the inner peripheral side.
When the annular tongue pieces 35a to 35a are elastically pressed against the outer peripheral surface of the lower outlet 23 of the upper joint 20, the lower outlet 23 is connected to the upper receptacle 31 of the lower joint 30 in a watertight manner. I have.

Next, in the middle of the lower joint 30 in the pipe axis direction,
A lateral branch pipe receiving port 32 is provided. A cylindrical packing (not shown) is also mounted on the inner peripheral side of the horizontal branch pipe receiving port 32. A horizontal branch pipe 5 from the toilet 1 is inserted into the inner peripheral side of the packing. The sewage from the toilet 1 is drained to the drainage joint 10 and the drainage stack 3 via the horizontal branch pipe 5. A drain pipe having a diameter of 80 mm is used for the horizontal branch pipe 5. Therefore, the horizontal branch pipe receiving port 32
Is set to the size of a nominal 80 to which the horizontal branch pipe 5 can be connected on the inner peripheral side. Above the horizontal branch pipe receiving port 32 (above the sewage inflow port 32a) and on the inner peripheral surface of the lower joint 30, a flow dividing guide 3 having a U-shape as viewed from the pipe center side is provided.
4 is formed so as to project toward the center of the tube like an eaves. The branch guide 34 is provided by bending a side portion of the lower joint 30 inward of the pipe. For this reason, the back side (tube surface side) of the flow dividing guide 34 is concaved in a U-shape.
In the figure, reference numeral 34a is given to this depressed portion (depression). By the flow dividing guide 34, the drainage of the standing pipe flowing down from the upstream side is branched right and left above the inflow port 32a of the sewage. Merging collision between the wastewater flowing into the lower joint 30 and the standing pipe drainage flowing down from the upstream side is avoided, whereby the pressure fluctuation in the pipe is suppressed, and the horizontal branch pipe drainage into the drainage pipe joint 10 is prevented. Inflow can be performed smoothly.

The lower part of the lower joint 30 is formed as a lower port 33 having a straight pipe shape, and the lower port 33 is inserted into a receiving port 3c provided at an upper portion of the drainage stack 3b on the downstream side. A cylindrical packing (not shown) is also mounted in the receiving port 3c. The lower outlet 33 of the lower joint 30 is inserted into the inner peripheral side of the packing, and the drainage pipe joint 10 is connected to the drainage stack 3b on the downstream side. As described above, an annular tongue is integrally provided also on the inner peripheral side of the packing, and the annular tongue is elastically pressed against the outer peripheral surface of the lower insertion port 33 to thereby lower the lower joint 30.
Are connected to the horizontal branch pipe port 32 in a watertight manner.

The drain stack 3 and the drain joint 10 are provided with a concrete wall 4 for partitioning the toilet and the adjacent room.
4 (along the wall). In addition, the drainage stack 3b on the downstream side is fixed so as to vertically penetrate the concrete slab 40 that partitions the upper floor and the lower floor. Above the concrete slab 40, a toilet floor 41 is stretched. The toilet 1 is placed on the floor 41. The horizontal branch pipe receiving port 32 of the lower joint 30 is
1, and is arranged at a height corresponding to the drain port of the toilet bowl 1 (the connection port of the horizontal branch pipe 5). Further, the horizontal branch pipe receiving port 22 of the upper joint 20 is located further upward and at a height corresponding to the drain port of the hand washing machine 2 (the connection port of the horizontal branch pipe 4). The hand-washing machine 2 is installed on a hand-washing stand 42 provided above the floor 41 and at a position substantially at the waist. The horizontal branch pipe 4 is connected to the hand washer 2 via a U-shaped drain trap 43 connected to the lower surface of the hand washer 2. The horizontal branch pipe 4 is provided above the horizontal branch pipe 5 for sewage.

According to the drainage pipe joint 10 configured as described above, the horizontal branch pipe receiving port 22 for connecting the horizontal branch pipe 4 from the hand washing machine 2 connects the horizontal branch pipe 5 from the toilet bowl 1. Is disposed on the pipe axial direction upper side than the horizontal branch pipe receiving port 32, so there is no need to perform piping for lowering the horizontal branch pipe 4 to the same height as the horizontal branch pipe 5; Piping can be performed, whereby the piping path of the horizontal branch pipe 4 from the hand washing machine 2 can be shortened, and efficient piping can be performed.

The illustrated drainage pipe joint 10 has a horizontal branch pipe receiving port 22 for connecting the horizontal branch pipe 4 from the hand washing machine 2.
And a lower joint 30 provided with a horizontal branch pipe receiving port 32 for connecting the horizontal branch pipe 5 from the toilet 1. For this reason, the upper joint 20 is connected to the lower joint 3
By adjusting the position around the pipe axis with respect to 0, the position of the horizontal branch pipe receiving port 22 around the pipe axis with respect to the horizontal branch pipe receiving port 32 can be arbitrarily set.
The degree of freedom of the piping can be increased. Also, up and down 2
By being separated, the upper joint 20 and the lower joint 30
Can be finely adjusted within a certain range, and also in this respect, the degree of freedom of the horizontal branch pipes 4 and 5 can be increased.

Further, an inflow port 32a of the horizontal branch pipe receiving port 32 is provided.
Is provided above the tubing, it is possible to avoid or alleviate the merge collision between the stack drainage and the sewage in the drainage pipe joint 10, thereby suppressing pressure fluctuations in the pipe and hand washing. It is possible to prevent the trap portion of various drainage devices such as the toilet 2 or the toilet 1 from being opened.

The drainage stack 3b on the downstream side is directly fixed to the concrete slab 40, and packing is interposed between the receiving port 3c on the downstream side and the lower insertion port 33 of the lower joint 30. For this reason, in the lower joint 30, the vibration generated by the inflow of sewage and collision with the pipe wall is absorbed by the packing and is not directly transmitted to the concrete slab, thereby generating drainage noise in the toilet T or in the vicinity thereof. Can be suppressed.

Various modifications can be made to the embodiment described above. For example, the two-piece drain pipe joint 10 is divided into two parts in the pipe axis direction, and the upper joint 20 is provided with a horizontal branch pipe receiving port 22 for drainage of a hand washing machine, and the lower joint 30 is provided with a horizontal branch pipe receiving port 32 for sewage. However, as shown in FIG. 5, an integrated drain pipe joint 50 in which the two joints 20, 30 are integrated may be used. The integrated drainage pipe joint 50 has an upper receptacle 51 for connecting an upstream drainage stack, a lower outlet 52 for connecting to a downstream drainage stack, and a horizontal branch pipe for miscellaneous drainage. And a receptacle 54 for connecting a horizontal branch pipe for sewage. The receiving port 53 on the upper side in the pipe axis direction (upper side in the figure) is set to a nominal 50, and a drainage device such as the hand-washing machine 2 is connected through the horizontal branch pipe 4 having a diameter of 50 mm. The receiving port 54 on the lower side in the pipe axis direction (the lower side in the figure) is set to a nominal size 80,
The toilet 1 is connected via a horizontal branch pipe 5 having a diameter of 80 mm. With such an integrated drainage pipe joint 50, the piping of the horizontal branch pipes 4 and 5 in the toilet T provided with the handwasher 2 in addition to the toilet bowl 1 can be facilitated.

A horizontal branch pipe receiving port 22 for draining a hand-washing machine is also provided.
The size is designated as 50 and the size of the horizontal branch pipe receiving port 32 for sewage is designated as 80, but these can be changed as appropriate according to the type of drainage equipment to be connected. For example, the upper lateral branch receptacle can be set to call 40, call 30, 25, etc., and the lower horizontal branch receptacle can be set to call 100, etc. In addition, for example, the nominal 100 refers to a size (mainly a diameter) of a receptacle suitable for connecting a horizontal branch pipe having a diameter of 100 mm.

Also, the connection between the upstream drainage stack 3a and the upper joint 20, the connection between the upper joint 20 and the lower joint 30,
A cylindrical packing (so-called so-called packing) is used for connecting the lower joint 30 to the drainage stack 3b on the downstream side, connecting the horizontal branch pipe receiving port 22 to the horizontal branch pipe 4, and connecting the horizontal branch pipe receiving port 32 to the horizontal branch pipe 5. Although the connection method using one-touch packing) has been exemplified, a so-called mechanical method (a method in which a ring-shaped packing is deformed by flange contact to connect by changing the shape) may be adopted instead. Furthermore, the horizontal branch pipe 5
On-floor type toilet bowl 1 in which pipes are laid on the floor,
The drainage pipe joint according to the present invention can be similarly applied to a toilet bowl for underfloor piping. In addition, the hand washer 2 has been exemplified as the drainage device connected to the upper lateral branch pipe receptacle, but the drainage device can also be used to connect a drainage device such as a general basin or a hair washer. Further, the branch guide 34 may be omitted.

[Brief description of the drawings]

FIG. 1 is a side view of a toilet showing an example of plumbing using a drainage pipe joint according to an exemplary embodiment.

FIG. 2 is a side view of the drainage pipe joint according to the illustrated embodiment.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 2;

FIG. 4 is a sectional view taken along line (4)-(4) of FIG. 3;

FIG. 5 is a view showing another embodiment of the present invention, and is a side view of an integrated drainage pipe joint.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Toilet bowl 2 ... Handwasher 3 ... Drainage stack, 3a ... Upstream drainage stack, 3b ... Downstream drainage stack4 ... Horizontal branch pipe (for handwasher drainage) 5 ... Horizontal branch pipe (for sewage) 10) Drainage pipe joint 20 ... Upper joint 22 ... Horizontal branch pipe receiving port 30 ... Lower joint 32 ... Horizontal branch pipe receiving port 34 ... Dividing guide 35 ... Packing, 35a ... Annular tongue piece 40 ... Concrete slab 41 ... Floor

Claims (4)

[Claims] 1. A drainage pipe joint having a horizontal branch pipe receptacle for miscellaneous drainage with a nominal diameter of 50 or less, above the horizontal branch pipe receptacle for sewage with a nominal diameter of 80 or more. 2. The drainage pipe joint according to claim 1, wherein the upper pipe joint is divided into an upper joint having a horizontal branch pipe receptacle for gray water and a lower joint having a horizontal branch pipe receptacle for sewage. A drain pipe joint configured to connect and use the joint and the lower joint. 3. The drainage pipe joint according to claim 2, wherein the lower joint of the upper joint is inserted into the upper receptacle of the lower joint, and the upper joint and the lower joint are connected to each other. Drainage fittings. 4. The drainage pipe joint according to claim 2, wherein the upper joint is configured to be adjustable in position about the pipe axis with respect to the lower joint.