JPH0374729B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a drainage vertical pipe device mainly applied to drainage equipment of buildings.

[Conventional technology]

Figure 6 shows a conventional example of a two-pipe drainage vertical pipe device that is applied to the drainage equipment of high-rise buildings. The drainage horizontal branch pipe 3 from the drainage equipment 2 is connected by the horizontal branch pipe joint 4, and the top of the drainage vertical pipe 1 is connected to the ventilation vertical pipe 5 as an elongated top ventilation pipe 6. The main points of the drainage vertical pipe 1 are connected to the vertical pipe 5 by a joint ventilation pipe 7, and each drainage horizontal branch pipe 3 is connected to the ventilation vertical pipe 5 by a loop ventilation pipe 8. . According to this conventional example, the drainage vertical pipe 1 and the drainage horizontal branch pipe 3 are connected to an elongated top vent pipe 6 which is open to the atmosphere, a ventilated vertical pipe 5 connected to the elongated top vent pipe 6, and a connecting pipe. Since it is connected to the trachea 7 and the loop ventilation pipe 8, the pressurized air or negative pressure air generated by the drainage flowing down in the drainage vertical pipe 1 and the drainage horizontal branch pipe 3 is used for ventilation. It can be communicated with the atmosphere through the vertical pipe 5 and the top ventilation pipe 6, and as a result, problems such as backflow of pressurized air in the pipe due to drainage, suction, and breakage of the trap seal water are avoided. Therefore, when the wastewater generated from the drainage equipment 2 on each floor is collected by each drainage horizontal branch pipe 3 and discharged to the sewer via the drainage horizontal branch pipe 9 through the drainage vertical pipe 1, the drainage It is difficult for a pressure difference to occur in the vertical pipe 1,
It is possible to safely and quickly drain the inside of the vertical drainage pipe 1, and also to ensure that each trap of each drainage device 2 is water-tight.

[Problems to be solved by the invention]

However, in this conventional dual-pipe drainage vertical pipe device, the ventilation vertical pipe 5 must be installed separately from the drainage vertical pipe 1, and in addition, the connecting ventilation pipe 7, the loop ventilation pipe 8, etc. The connection structure is complicated. Therefore, not only does piping construction work require a considerable amount of time and expense, but also a large piping space is required, making it extremely difficult to construct and install it in a narrow space. In addition, in order to prevent dew condensation from occurring on the outside of the drainage vertical pipe 1 and the side branch pipe joint 4, it is necessary to protect them from the outer periphery. It was necessary to perform the troublesome additional work of covering the area with heat insulating material. Conventionally, a special structure such as a baffle plate or a vane was installed in the joint of the horizontal branch pipe for drainage to the vertical pipe for drainage to create a swirling flow in the flow of wastewater from the horizontal branch pipe for drainage into the vertical drainage pipe. A one-pipe drainage vertical pipe device has also been devised in which the ventilation vertical pipe can be omitted by using a special joint configured to provide the following. However, the special structure inside the special joint can become an obstruction, causing clogging with solid matter, and the loop ventilation pipe method cannot be adopted, so it cannot be applied to toilets in general buildings with long horizontal drainage pipes. Ta. Furthermore, as the scale of the building increases, such as the number of floors, there is a problem that the ventilation function cannot be sufficiently satisfied. This invention was invented to solve the above problems, and although it is essentially a one-pipe type drainage vertical pipe device, a loop ventilation pipe system can be adopted, and the drainage vertical pipe and each floor The ventilation function within the lateral branch pipe can be fully satisfied.

[Means to solve the problem]

This invention configures the drainage vertical pipe and the horizontal branch pipe joints on each floor into a two-layer pipe structure consisting of an outer pipe and an inner pipe, and configures the inside of the inner pipe as a drainage path to drain water.
The drainage path is configured to be ventilated by the ventilation path formed between the outer tube and the inner tube.

[Effect]

The drainage vertical pipe device of the present invention has a drainage vertical pipe and a horizontal branch pipe joint on each floor configured in a two-layer pipe structure, and has a substantially one-pipe structure. However, the inside of the drainage path of the drainage vertical pipe and the side branch pipe joint is sufficiently ventilated by the ventilation path formed on the outer periphery thereof. Moreover, the ventilation path becomes a shielding space for preventing condensation in the drainage path.

【Example】

Hereinafter, an embodiment of a drainage vertical pipe device in which the present invention is applied to drainage equipment of a high-rise building will be described with reference to FIGS. 1 to 5. First, FIG. 1 shows the whole of this drainage vertical pipe device, in which horizontal drainage pipes 13 from drainage fixtures 12 on each floor are connected to the vertical drainage pipe 11 through horizontal branch pipe joints 14. connected. The top of the vertical drainage pipe 11 itself is configured as an elongated vent pipe 15 and is open to the atmosphere, and the lower part of the vertical drainage pipe 11 is connected to the sewer through a drainage connection 16. Therefore, this drainage vertical pipe device is substantially constructed in a one-pipe system, and compared to the two-pipe system shown in the conventional example in FIG. 7 etc. is omitted. However, this drainage vertical pipe device has a double-layered pipe structure, the details of which will be described later, so that the ventilation function within the drainage vertical pipe and side branch pipes is sufficiently satisfied. Therefore, the drainage generated from the drainage equipment 12 on each floor is collected by each drainage horizontal branch pipe 13,
To safely and quickly drain the inside of the vertical drainage pipe 11 without causing a pressure difference in the vertical drainage pipe 11 when discharging the water through the vertical drainage pipe 11 through the horizontal drainage pipe 9 to a sewer pipe. In addition, it is possible to ensure that each trap of each drainage device 12 is watertight. Next, details of the two-layer pipe structure will be explained with reference to FIGS. 2 to 5. First, the present invention is a drainage vertical pipe device having a double-layer pipe structure, which includes a pair of vertical pipes 11 arranged in a row vertically, and a joint 14 that connects these vertical pipes 11 in a detachable manner. be. The joint 14 has a drainage horizontal branch pipe 13 as described above.
are also connected, so the joint 14 is defined in this specification as
It is also called a side branch pipe joint 14. Each of the upper and lower vertical pipes 11 has an outer pipe 18 and an inner pipe 20 inside the outer pipe 18. A drainage path 28 is formed inside the inner pipe 20, and a drainage path 28 is formed inside the inner pipe 20. A ventilation path 30 is formed between the outer surfaces of 20 . Key points of the outer tube 18 and the inner tube 20 are coupled and fixed to each other by spacers 22 that do not obstruct the ventilation path 30. The joint 14 includes an outer pipe 19 having a larger diameter than the outer pipe 18 of the upper vertical pipe 11 and an inner pipe located inside the outer pipe 19 and having a larger diameter than the inner pipe 20 of the upper vertical pipe 11. A drainage path 29 is formed inside the inner tube 21, and a ventilation path 31 is formed between the inner surface of the outer tube 19 and the outer surface of the inner tube 21 of the joint 14. Outer pipe 19 and inner pipe 2 of joint 14
1 is a vertical pipe 11 with respect to the tube core of the upper and lower vertical pipes 11.
arranged almost concentrically. At least a portion of the upper end opening of the outer tube 19 of the joint 14 extending outward from the maximum outer diameter of the upper vertical tube 11 is closed by an annular lid 23 . The lid body 23 is detachably attached to the outer tube 19 with a plurality of bolts 24 . In addition, the lid body 2
3 is a cylindrical extension, for example, which abuts on the outer tube 18 of the upper vertical tube 11 in order to seal the inside of the outer tube 19 of the joint 14 and the inside of the upper vertical tube 11 from the outside. , with the desired extension. The extension of the lid body 23 in the embodiment shown in FIG. These rising cylinder parts and the lower end of the upper outer tube 18 are connected by an annular joint 25 that surrounds them. in this case,
The joint 25 allows the outer tube 18 and the rising cylinder portion of the lid body 23 to rotate relative to each other around the tube core.
5, it is possible to connect the connectors in a rotationally adjustable manner. The upper end opening of the inner pipe 21 of the joint 14 is located below the upper end opening of the outer pipe 19 of the joint 14 in order to communicate the ventilation path 30 in the upper vertical pipe 11 with the ventilation path 31 in the joint 14. is located, thereby
A drainage path 29 in the joint 14 communicates with both the drainage path 28 and the ventilation path 30 in the upper vertical pipe 11. Therefore, the positive pressure air inside the vertical pipe 11 pressurized by the drainage inside the vertical pipe 11 can escape from the upper end opening of the joint inner pipe 21 into the ventilation paths 31 and 30. Further, the negative pressure air in the vertical pipe 11 sucked by the drainage inside the vertical pipe 11 can be replenished from the upper end opening of the inner pipe 21. In this case, the lower end opening of the upper inner tube 20 may be located below the upper end opening of this inner tube 21 so as to penetrate deeply into the inner tube 21 of the joint 14, and as a result,
The drainage water flowing down from the upper inner pipe 20 into the inner pipe 21 of the joint 14 is prevented from scattering into the ventilation path 31 inside the joint 14. Further, the lower portions of the outer tube 19 and the inner tube 21 of the joint 14 are each gradually reduced in diameter in a hopper shape, and the lower end of the outer tube 19 is joined to the upper end of the outer tube 18 of the vertical tube 11 located below. The lower end of the inner tube 21 of the joint 14 is joined to the upper end of the inner tube 20 of the lower vertical tube 11. As a result, joint 1
The drainage path 29 in the lower vertical pipe 11 is connected to the drainage path 28 of the lower vertical pipe 11, and the ventilation path 31 in the joint 14 is connected to the ventilation path 30 of the lower vertical pipe 11. In this embodiment, the inner pipe 2 in the joint 14
The lower end of the hopper-shaped part of No. 1 is as shown in the figure.
It has a cylindrical lower portion that slides around the upper end of the inner tube 20 in the lower vertical tube 11. On the other hand, the lower end of the hopper-shaped portion of the outer tube 19 in the joint 14 has a lower cylindrical portion that comes into contact with the upper end of the outer tube 18 in the lower vertical tube 11, as shown in the figure. ,
It is connected to the lower outer tube 18 by a joint 25 similar to that described above so that it can be rotated around its own tube core. Furthermore, in the present invention, at a portion of the inner wall surface of the inner tube 21 in the joint 14 near the upper end,
A connecting pipe 26 that passes through the outer pipe 19 and connects to the external horizontal branch pipe 13 for drainage has a through-opening at its distal end.
The tube core of the connecting tube 26 is arranged so that the waste water flowing from the connecting tube 26 into the inner tube 21 of the joint 14 flows down while swirling along the inner surface of the inner tube 21. It extends eccentrically from the tube core. As mentioned above, the upper (especially the uppermost) vertical pipe 11
When connecting the top of the ventilation path 30 directly to the atmosphere, the inner tube 20 is made shorter than the outer tube 18 at the upper part of the uppermost vertical tube 11, and the uppermost outer tube 1
8 may be used as the top ventilation pipe 15. In another embodiment, in order to use the device of the present invention in combination with a conventional two-pipe structure, the drainage path 28 in the vertical pipe 11 can be connected to the conventional combined vent pipe 7 (FIG. 6) by A joint ventilation hole 32 penetrating the wall of the inner tube 20 may be provided at a suitable location in the inner tube 20 of the vertical tube 1 . The joint vent hole 32 is preferably provided in a communicating pipe that is inclined diagonally upward so as not to affect drainage. Furthermore, if a loop ventilation pipe 8 (Fig. 6) is required in a toilet of a general building where the horizontal branch pipe 13 for drainage is long, a loop ventilation pipe connection port 33 is provided in the outer pipe 18 of the vertical pipe 11. You can keep it. In this invention, since the outer tubes 18 and 19 of each vertical tube 11 and the joint 14 cover the inner tubes 20 and 21, these inner tubes 20 and 21 are formed of inexpensive thin-walled resin tubes, and each outer tube is It is also possible to form the pipes 18, 19 from rust-proofed thin-walled steel pipes or fire-resistant asbestos cement pipes. As explained in connection with FIG. 1, the above-mentioned drainage vertical pipe device of the present invention can be connected in multiple stages according to the height of the building, and usually can be connected to each floor of the building. Each joint 14 is arranged at a position where According to this invention, the pressurized air generated by the drainage flowing down in the vertical pipe 11 and the horizontal branch pipe 13 for drainage,
Inside the joint 14, the ventilation path 3 of the joint 14 and the vertical pipe 11 passes through the upper end opening of the inner pipe 21 of the joint 14.
Since the pressurized air can escape into the inside of the compressor 1 and 30, problems such as backflow of this pressurized air are reliably avoided. For the same reason, the negative pressure air generated in the vertical pipe 11 and the horizontal branch pipe 13 can also be communicated to the atmosphere through the joint 14 and the vertical pipe 11, thereby avoiding problems such as stagnation of wastewater inside the pipe. Further, since the joint 14 according to the present invention is configured to open the upper end opening of the inner pipe 21 into the ventilation path 30 of the two-layer structure vertical pipe 11, a structure that connects the two ports is required. Therefore, the work of connecting the joint 14 and the vertical pipe 11 becomes extremely simple. In addition, since the joint inner pipe 21 serves as a ventilation route and is therefore in communication with the atmosphere, the drainage horizontal branch pipe 13 that communicates with the joint inner pipe 21 has the ventilation route 3 of the vertical pipe 11.
There is no need to provide a ventilation path for connection to 0, and conventional single-layer pipes can be used. Therefore, the drainage horizontal branch pipe 13 to be used may be a normal one or an existing one, and the construction cost and material cost thereof are low. Furthermore, since the upper end opening of the joint inner pipe 21 is open, the joint inner pipe 21 can be formed into an appropriate hopper shape, and the waste water entering from the side branch pipe 13 can be swirled into the joint inner pipe 21 to form the flowing sewage water and the inflow water. As a result, it is possible to increase the chances of the pressurized air or negative pressure air caused by this drainage escaping from the upper part of the joint inner pipe 21 to the atmosphere. According to the two-layer pipe structure configured as described above, the drainage path 2 of the drainage vertical pipe 11 and the horizontal branch pipe joint 14
Sufficient ventilation is provided by the ventilation paths 30, 31 formed in the outer periphery of the insides of 8, 29. Since the ventilation paths 30 and 31 formed on the outer periphery of each of the drainage paths 28 and 29 serve as dew-proof shielding spaces, no condensation occurs on the surfaces of the outer tubes 18 and 19. In addition, if dew condensation occurs on the surfaces of the inner pipes 20, 21, the ventilation path 30,
It is discharged through 31. Therefore, there is no need to insulate the outer circumferences of the drainage vertical pipe 11 and the side branch pipe joint 14 with a heat insulating material.

【Effect of the invention】

Although this invention is essentially a one-pipe type drainage vertical pipe device, it has a two-layer pipe structure that can sufficiently satisfy the ventilation function within the drainage vertical pipe and the side branch pipes on each floor. Therefore, compared to the conventional two-pipe system, most of the piping structures such as vertical pipes for ventilation and joint ventilation pipes can be omitted. Therefore, not only can the time and cost of piping construction work be significantly reduced, but also the piping space can be reduced, and construction and installation can be easily performed even in a narrow space. Moreover, since the ventilation path on the outer periphery of the inner pipe of the double-layer pipe structure serves as a dew-proof shielding space, there is no need to insulate the outer periphery of the drainage vertical pipe and side branch pipe joint with heat insulating material. Therefore, there is no need to perform troublesome incidental work for heat insulation, and in addition to significantly shortening the working time, it is possible to significantly reduce costs by eliminating the need for heat insulating material. Furthermore, the double-layered pipe structure also has a very high sound-insulating effect on drainage sound. In addition, at the side branch pipe joint part, due to the hopper-shaped inner pipe and the eccentric connection structure of the drainage horizontal branch pipe to the inner pipe, a swirl flow is generated in the wastewater discharged from the drainage horizontal branch pipe into the inner pipe. Since we can give
Unlike the conventional one-pipe system, there is no need to provide any special structures such as baffles or vanes to provide swirling flow within the side branch pipe joint. Therefore, the special structure does not become an obstacle and cause clogging due to solid matter, and not only has extremely high drainage performance, but also simplifies the structure of the side branch pipe joint itself and reduces costs. It is possible. In addition, due to the double-layered pipe structure, although steel pipes are used for the outer pipe due to strength requirements, the inner pipe does not require as much strength, so it is possible to use low-cost resin pipes, making it economical. It is. Furthermore, by using a steel pipe with anti-corrosion treatment for the outer pipe, it can also be installed in areas that penetrate fire protection compartments. The main advantage obtained by this invention is that the connection between the two-layer structure joint 14 and the two-layer structure vertical pipe 11, and the connection between the two-layer structure joint 14 and the single-layer structure horizontal branch pipe 13,
It is extremely simple and easy.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is an overall piping diagram, FIG. 2 is a vertical sectional view of the main parts, and FIG. 3 is a diagram of FIG. 4 is a cross-sectional view taken along lines taken from FIG. 2, FIG. 5 is an exploded perspective view of a side branch pipe joint, and FIG. 6 is a piping diagram of a conventional example. 11...Vertical pipe for drainage, 13...Horizontal branch pipe for drainage,
14... Side branch pipe joint, 18, 19... Outer pipe, 2
0,21...Inner tube, 22...Spacer, 28,2
9... Drainage route, 30, 31... Ventilation route, 32
... Combined ventilation hole, 33 ... Connection port for loop ventilation.

Claims (1)

[Claims] 1. A pair of vertical pipes 11 arranged vertically in one row;
The drainage vertical pipe device includes a joint 14 that connects these vertical pipes 11, and each of the vertical pipes 11 has an outer pipe 18 and an inner pipe 20 inside the outer pipe 18.
A drainage path 28 is formed inside the inner tube 20, a ventilation path 30 is formed between the inner surface of the outer tube 18 and the outer surface of the inner tube 20, and the outer tube 18 and the inner tube 2
0 is the spacer 2 that does not obstruct the ventilation path 30.
2, the joint 14 is connected and fixed to each other by
An outer pipe 19 having a larger diameter than the outer pipe 18 of the upper vertical pipe 11
and an inner pipe 21 located inside this outer pipe 19 and having a larger diameter than the inner pipe 20 of the upper vertical pipe 11, and a drainage path 29 is formed inside this inner pipe 21, and The inner surface of the outer tube 19 of the joint 14 and the inner tube 2
A ventilation path 31 is formed between the outer surfaces of the joint 14
The outer tube 19 and the inner tube 21 are arranged approximately concentrically with the vertical tube 11 with respect to the tube cores of the upper and lower vertical tubes 11, and the upper end opening of the outer tube 19 of the joint 14 is located at least at the upper vertical tube 11. A portion extending outward from the maximum outer diameter is closed by an annular lid 23, and the lid 23 connects the inside of the outer tube 19 of the joint 14 and the inside of the outer tube 18 of the upper vertical tube 11. , has a desired extension that abuts the outer tube 18 of the upper vertical tube 11 in order to seal it from the outside, and the inner tube 21 of the joint 14.
The upper end opening is located below the upper end opening of the outer tube 19 of the joint 14 in order to communicate the ventilation path 30 in the upper vertical pipe 11 with the ventilation path 31 in the joint 14. Therefore, the drainage path 29 in the joint 14 is connected to the drainage path 2 in the upper vertical pipe 11.
8 and the ventilation path 30, and the lower portions of the outer tube 19 and the inner tube 21 of the joint 14 are each gradually reduced in diameter in a hopper shape, and the outer tube 19
The lower end of is joined to the upper end of the outer pipe 18 of the lower vertical pipe 11, and the lower end of the inner pipe 21 of the joint 14 is joined to the upper end of the inner pipe 20 of the lower vertical pipe 11, As a result, the drainage path 2 inside the joint 14
9 is connected to the drainage path 28 of the lower vertical pipe 11, and the ventilation path 31 in the joint 14 is connected to the ventilation path 30 of the lower vertical pipe 11. A horizontal branch pipe 13 for external drainage passes through the outer pipe 19 near the upper end.
The distal end of the connecting tube 20 connected to the connecting tube 20 has a through-opening, and the tube core of the connecting tube 26 allows the wastewater flowing from the connecting tube 26 into the inner tube 21 of the joint 14 to pass through the inner tube 2.
As if flowing down while swirling along the inner surface of 1,
A drainage vertical pipe device characterized by extending at an eccentric position from the pipe core of the inner pipe 21. 2. The drainage vertical pipe device according to claim 1, wherein the top of the ventilation path 30 in the upper vertical pipe 11 is directly connected to the atmosphere. 3 Connecting ventilation holes 3 penetrating the pipe wall of the inner pipe 20 are provided at appropriate locations in the inner pipe 20 of the upper and lower vertical pipes 11.
2. The drainage vertical pipe device according to claim 1, wherein: 2 is provided. 4. The inner tube 20 of the upper and lower vertical tubes 11 and the inner tube 21 of the joint 14 are made of thin-walled resin tubes, and the outer tube 18 of each vertical tube 11 and the outer tube 19 of the joint 14 are
The drainage vertical pipe device according to claim 1, characterized in that it is constructed of a thin-walled steel pipe or an asbestos cement pipe that has been subjected to rust prevention treatment. 5 The outer tube 19 and the inner tube 21 of the joint 14 are
Claim 1, characterized in that the tube is connected to the outer tube 18 and the inner tube 20 of the upper and lower vertical tubes 11 so as to be rotatably adjustable around their respective tube cores. Vertical pipe device for drainage. 6. The drainage vertical pipe device according to claim 1, wherein the outer pipe 18 of the vertical pipe 11 is provided with a loop ventilation pipe connection port 33.