JP2002081114A - Drain system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain system which conveys waste water from a plurality of draining devices inclusive of a closet through small-diameter drain pipes, and smoothly drains the waste water especially that from the closet without back-flow or detention when the small-diameter drain pipes are conjoined together. SOLUTION: According to the drain system, waste water from the closet flows from a location more upstream than locations of the draining devices other than the closet, and each confluent portion of the drain pipes is prevented from being filled with waste water drained from the respective draining devices other than the closet. In this manner, the waste water from the closet smoothly flows through the drain pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transporting drainage water from a plurality of drainage devices including a toilet bowl through a small-diameter drainage pipe. It relates to a drainage system for discharging. Here, the drainage means a toilet, a urinal, a bathtub, a sink, a kitchen sink, a washing machine, and the like.

[0002]

2. Description of the Related Art In recent residential architectural designs, piping space for drainage equipment is reduced as much as possible to make the living space as large as possible, or to reduce labor for piping work. In particular, there is a need to reduce the diameter of the drain horizontal branch pipe for drainage equipment.

[0003] As a piping condition of a toilet, it is considered that a drain horizontal branch pipe having a pipe nominal pipe diameter of about 75 mm is desirable.
However, considering the shape of the waste, it is considered possible to reduce the pipe diameter to a minimum of about 50 mm. In order to convey toilet bowl drainage with such a small-diameter drainage horizontal branch pipe, it is conceivable to use a method such as pressure feeding. Drainage discharged from drainage equipment other than toilet bowls
It is transported without problems by a horizontal drainage pipe of 50 mm or less. Therefore, if all drain horizontal branch pipes can be unified with pipes having a nominal pipe diameter of 50 mm, the piping space for drainage equipment can be reduced. Alternatively, the pipe connected to the toilet may have a nominal pipe diameter of 50 mm, and the pipes connected to other drainage devices may have a nominal pipe diameter of 50 mm or less.

[0004] When the drainage discharged from each drainage device is conveyed by a horizontal drainage pipe having a small diameter of 50 mm or less, the drainage flows down in the pipe in a substantially full state. For this reason, it is not possible to take proper ventilation, which may cause a problem such as trap opening.

[0005] If a part or the whole of these drainage horizontal branch pipes can be merged and integrated, the piping space can be further reduced. In this case, depending on the inflow conditions at the time of merging, the wastewater that has flowed in first becomes full before and after the confluence, and the wastewater that has flowed in later hits the wall of the full water and cannot flow down. Would. In particular, in the case of toilet flush, it is a problem to be avoided from a sanitary point of view that a backflow or a discharge failure from the toilet occurs.

The present invention solves the above-mentioned problems, and conveys the drainage of a plurality of drainage devices including a toilet by a small-diameter drainpipe. The purpose is to provide a drainage system that discharges smoothly.

[Means for Solving the Problems]

[0007] In order to solve the above-mentioned problems, the drainage system according to the first aspect of the present invention is a drainage horizontal branch pipe installed on any one floor and connected to a plurality of drainage devices including a toilet. Therefore, the pipe diameters from the drainage devices to the drainage stack, a drainage tank such as a masashi or a manhole, or the external public sewerage have the same diameter. Thus, when installing the drain horizontal branch pipe, only one kind of pipe need be prepared, and the labor and cost of construction can be saved.

In the drainage system according to the second aspect of the present invention, the drain horizontal branch pipe has a nominal pipe diameter of 50 mm. Thereby, toilet bowl drainage can be conveyed, and the work of construction can be reduced as compared with the case where a conventional pipe having a large pipe nominal diameter is used. In addition, costs can be reduced. Further, the piping space can be reduced.

According to a third aspect of the present invention, there is provided a drainage system according to the third aspect, wherein a drain horizontal branch pipe connected to a plurality of drainage devices including a toilet, which is installed on an arbitrary floor, is connected to the toilet. Nominal pipe diameter is 50 mm for pipes that are connected, and nominal pipe diameter is 50 mm or less for pipes connected to other drainage devices. This can save labor of construction compared to the case where a conventional pipe having a large pipe nominal diameter is used. In addition, costs can be reduced.
Further, the piping space can be reduced.

According to a fourth aspect of the present invention, there is provided a drainage system according to the present invention, wherein drainage discharged from each drainage device including a toilet bowl is partially or wholly merged with each other and then discharged into a drainage stack or a square or manhole. It will be transported to a drainage tank or an external public sewer. Thereby, the drainage horizontal branch pipes from the respective drainage devices can be concentrated instead of being piped below the floor, so that the piping space can be omitted. Also, since the number of required piping members can be reduced, the cost can be reduced.

According to a fifth aspect of the present invention, in the drain horizontal branch pipe, when part or all of the toilet drainage and miscellaneous drainage respectively discharged from each drainage device including the toilet is joined to each other. In addition, it is assumed that the drainage from the toilet bowl always joins from the upstream, and the drainage from the drainage equipment other than the toilet bowl flows in downstream from the toilet. By properly adjusting the conditions for inflow of the drainage from the drainage devices other than the toilet into the junction, the toilet drainage can smoothly flow down the drainage pipe without backflow or stagnation.

According to a sixth aspect of the present invention, in the drainage horizontal branch pipe, drainage from each drainage device other than the toilet bowl flows into the junction at an angle of 45 ° or less. Thereby, drainage from each drainage device other than the toilet bowl can flow in smoothly without backflow at the time of merging.

In the drainage system according to the present invention, the drainage horizontal branch pipe is provided with a flow rate adjusting means for adjusting a flow rate of drainage from each drainage device other than the toilet bowl to the junction. Thus, the inflow flow rate can be adjusted so that the drainage from each drainage device other than the toilet does not prevent the toilet drainage from flowing down.

In the drainage system according to the present invention, a flow measuring means for measuring a flow rate of the toilet wastewater flowing through the drainage pipe is provided in the drainage horizontal branch pipe. This makes it possible to know an appropriate inflow flow rate so that the drainage from each drainage device other than the toilet does not prevent the toilet drainage from flowing down in the drain pipe.

According to a ninth aspect of the present invention, there is provided the drainage system, wherein the flow rate adjusting means is configured to discharge drainage from each drainage device other than the toilet in accordance with the flow rate of the toilet drainage flowing through the drainage pipe measured by the flow rate measuring means. The inflow flow rate was adjusted. This makes it possible to adjust the inflow flow rate to an appropriate value so that the drainage from each drainage device other than the toilet does not prevent the toilet drainage from flowing down. In addition, when toilet bowl drainage does not flow down, the inflow from each drainage device other than the toilet bowl can be maximized, so that each drainage device can discharge drainage quickly.

According to a tenth aspect of the present invention, in the drainage horizontal branch pipe, the drainage from each drainage device other than the toilet bowl flowing into the junction flows down along the pipe wall surface. As a result, the drain pipe does not become full due to drainage from drainage devices other than the toilet bowl, and particularly, the vicinity of the pipe axis is not filled, so that the toilet drainage can smoothly flow down this part.

In the drainage system according to the eleventh aspect of the present invention, a check valve is provided upstream of the inflow portion of the drainage pipe in the drainage horizontal branch pipe of each drainage device other than the toilet. Thereby, the drainage does not flow back to each drainage device.

According to a twelfth aspect of the present invention, each drainage device including a toilet bowl is provided with a ventilation means. Thus, even when the drain horizontal branch pipe becomes full, problems such as breakage of the trap of the drainage device do not occur.

BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the drainage system according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a state in which drainage discharged from each of a plurality of drainage devices 2 including a toilet bowl 1 installed on an arbitrary floor is transferred to a drainage stack 4 through a drainage horizontal branch pipe 3. FIG. Figure
2 is a side view thereof. The discharge destination may be not only a drainage stack, but also a drainage tank such as a manhole or an external public sewerage.

All drain horizontal branch pipes have a nominal pipe diameter of 50 mm.
Since the pipe is used, the piping space can be reduced. Alternatively, the pipe connected to the toilet may have a nominal pipe diameter of 50 mm, and the pipes connected to other drainage devices may have a nominal pipe diameter of 50 mm or less. Here, as for the plumbing condition of the toilet, it is desirable that the drain horizontal branch pipe has a nominal pipe diameter of about 75 mm, but in consideration of the shape of waste, it can be reduced to a minimum nominal pipe diameter of about 50 mm. It is thought possible. At that time, a method such as pressure feeding may be used.

When a small-diameter horizontal branch pipe is used, there is a high possibility that the drain horizontal branch pipe will be full of water. At this time, it is considered that a problem such as breakage of a trap may occur. For this reason, it is desirable that each drainage device is provided with individual ventilation means 5 upstream of the junction. Fig. 3 shows an example.

The drainage discharged from each drainage device 2 is shown in FIG.
And as shown in FIG.
Transported to At this time, the toilet wastewater discharged from the toilet 1 is flowing out from the upstream from the wastewater discharged from the other drainage devices 2, and the wastewater from each drainage device other than the toilet is discharged downstream from the toilet. It flows into the junction. When it is difficult to install the toilet so that it is the most upstream due to the layout of the room, such a form can be obtained by bypassing the pipe from each drainage device other than the toilet to the junction However, it is desirable that this detour be kept to a minimum.

FIG. 4 shows a state in which drainage conveyed through drainage horizontal branch pipes having the same diameter, particularly small diameters, joins at the junction 6. Drainage from drainage devices other than toilets is at the junction
Since it flows into the 6 at an angle of 45 ° or less, it can flow smoothly without backflow. As shown in FIG. 4 (a), when the wastewater from each drainage device other than the toilet bowl flows in first and the area around the junction 6 is full, and the wastewater from the toilet bowl flows in, as shown in FIG. Toilet drainage hits a full wall and cannot flow any further, causing it to flow backward or stay. Alternatively, it is conceivable that a discharge failure from the toilet may occur. So to avoid this situation,
Inflow conditions must be set in such a way that drainage from each drainage device other than the toilet bowl does not become full before and after the junction.

In FIG. 4B, a flow rate adjusting means 7 for adjusting the flow rate of the drainage from each drainage device other than the toilet bowl into the junction 6 is provided upstream of the junction 6. The inflow adjusting means may be of any type. For example, a method of changing the cross-sectional area of the pipe may be considered. Thereby, it is possible to flow into the junction at an appropriate flow rate so as to prevent the area before and after the junction from being filled with water. Since the area before and after the junction does not become full, there is enough space for toilet waste to flow into this part, and toilet waste can be discharged smoothly without backflow or stagnation.

If the flow rate of the drainage from each drainage device other than the toilet bowl into the junction is too small, there is a problem that the drainage drainage of the drainage device takes too much time. There is. This appropriate inflow rate can be determined by experiment or simulation. Further, in order to prevent the drained water once discharged from flowing back to the appliance, a check valve (not shown) is provided at a position close to the appliance in a drain horizontal branch pipe connected to each drainage appliance other than the toilet. .

Also, the flow rate of wastewater from each drainage device other than the toilet bowl to the junction is adjusted only by the amount that the toilet wastewater can flow into, and it is not necessary to restrict it more than necessary. In addition, when toilet drainage does not flow down, it is better to maximize the flow rate of drainage from each drainage device other than the toilet bowl to the junction, and to discharge the drainage at each drainage device quickly. Therefore, a flow rate measuring means 8 for measuring the flow rate of the toilet drainage is provided at a portion upstream of the junction, and according to the flow rate of the toilet drainage measured here, the flow rate adjusting means 7 causes the drainage from each drainage device other than the toilet. Adjusts the flow rate flowing into the junction. The flow measuring means may be any means generally used as a flow meter. A method of expressing the flow rate value of the toilet wastewater measured in this way in digital form, for example, and changing the pipe diameter with a motor controlled by a microcomputer is conceivable.

FIG. 4C shows another embodiment in which the drainage from each drainage device other than the toilet bowl flows in such that it does not become full before and after the junction. A guide 9 for guiding the flow of drainage is provided on the surface of the drainage pipe so that the drainage from each drainage device other than the toilet bowl that has flowed into the junction flows down while rotating along the pipe wall. Thereby, especially the vicinity of the drain axis of the drain pipe is not filled with drainage from each drainage device other than the toilet bowl, so that toilet toilet drainage can smoothly flow down this part.

[0028]

According to the first aspect of the present invention, there is provided a drainage horizontal branch pipe connected to a plurality of drainage devices including a toilet, which is installed on an arbitrary floor. Since the drainage stacks, drainage tanks such as masashis and manholes, and external public sewers all have the same diameter, only one type of pipe is required when installing drainage horizontal branch pipes. In addition, labor and cost for construction can be saved.

In the drainage system according to the second aspect of the present invention, the drain horizontal branch pipe has a pipe nominal pipe diameter of 50 mm, so that the toilet drain can be transported. The labor of construction can be saved as compared with the case where a pipe having a large diameter is used. In addition, costs can be reduced. Further, the piping space can be reduced.

In the drainage system according to the third aspect of the present invention, the drain horizontal branch pipe installed on any one floor and connected to a plurality of drainage devices including a toilet is connected to the toilet. When the pipe diameter is 50 mm for the pipes that are connected, and the pipe diameter is 50 mm or less for the pipes connected to other drainage equipment, the pipes with the larger pipe diameters are used. This can save labor for construction. In addition, costs can be reduced. Further, the piping space can be reduced.

In the drainage system according to the fourth aspect of the present invention, the drainage discharged from each drainage device including the toilet bowl is partially or entirely merged with each other, and then the drainage stack or the square or the manhole. Transport to the public drainage tank or external public sewerage system, it is possible to consolidate the drainage horizontal branch pipes from each drainage device, instead of piping many pipes under the floor, and omit piping space. Can be. Also, the number of required piping members can be reduced, and the cost can be reduced.

In the drainage system according to the fifth aspect of the present invention, in the drainage horizontal branch pipe, part or all of the toilet wastewater and miscellaneous wastewater discharged from each drainage device including the toilet bowl merges with each other. At that time, drainage from the toilet bowl always merges from the upstream, and drainage from drainage equipment other than the toilet bowl flows downstream from the toilet bowl. By properly adjusting the inflow condition of the drainage from the drain into the junction, it is possible to smoothly flow down the drainage pipe without backflow or stagnation.

In the drainage system according to the sixth aspect of the present invention, in the drainage horizontal branch pipe, drainage from each drainage device other than the toilet bowl flows into the junction at an angle of 45 ° or less. Drainage from each drainage device other than the toilet bowl can flow in smoothly without backflow at the time of merging.

In the drainage system according to the present invention, in the drainage horizontal branch pipe, there is provided a flow rate adjusting means for adjusting a flow rate of drainage from each drainage device other than the toilet bowl to the junction. The inflow rate can be adjusted so that the drainage from each drainage device other than the toilet does not prevent the drainage of the toilet.

In the drainage system according to the present invention, the drainage horizontal branch pipe is provided with flow rate measuring means for measuring the flow rate of the toilet drainage flowing through the drainage pipe, so that each drainage device other than the toilet bowl is provided. It is possible to know an appropriate inflow flow rate so that the drainage from the toilet does not prevent the toilet bowl drainage from flowing down in the drain pipe.

Further, in the drainage system according to the ninth aspect of the present invention, the flow rate adjusting means may be configured to discharge water from each drainage device other than the toilet in accordance with the flow rate of the toilet drainage flowing through the drainage pipe measured by the flow rate measuring means. By adjusting the inflow flow rate of the toilet, it is possible to adjust the inflow flow rate to an appropriate value so that the drainage from each drainage device other than the toilet does not hinder the flow of the toilet drainage. In addition, when toilet bowl drainage does not flow down, the inflow from each drainage device other than the toilet bowl can be maximized, so that each drainage device can discharge drainage quickly.

In the drainage system according to the tenth aspect of the present invention, in the horizontal drainage pipe, the drainage from each drainage device other than the toilet bowl which flows into the junction flows down along the pipe wall surface. Since the drainpipe is not filled with water from the drainage devices other than the toilet and is not particularly filled around the pipe axis, the toilet drain can smoothly flow down this portion.

In the drainage system according to the eleventh aspect of the present invention, a check valve is provided upstream of the drainage pipe inlet in each of the drainage horizontal branch pipes of each drainage device other than the toilet bowl, so that each drainage can be performed. There is no backflow to drainage equipment.

Further, in the drainage system according to the twelfth aspect of the present invention, each drainage device including the toilet bowl is provided with a ventilation means, so that even when the horizontal branch pipe of the drainage becomes full, the trap of the drainage device is opened. No problem such as

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire drainage system according to an embodiment of the present invention.

FIG. 2 is a side view showing the entire drainage system according to one embodiment of the present invention.

FIG. 3 is a view showing an example of individual ventilation means provided in a drainage system according to an embodiment of the present invention.

FIG. 4 is a diagram showing a state of merging in a drainage system according to an embodiment of the present invention.

[Explanation of symbols]

1: Toilet bowl 2: Drainage device
(Includes or does not include a toilet) 3: Drain horizontal branch pipe 4: Drainage stack pipe 5: Individual ventilation means 6: Confluence part 7: Flow rate adjustment means 8: Flow rate measurement means 9: Guide 10: Toilet bowl drain 11: Drainage from drainage devices other than toilets

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinji Toyofuku 2-1, 1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term (reference) 2D061 AA05 AB04 AB07 AB10 AC07 AC08

Claims (12)

[Claims] 1. A drain horizontal branch pipe installed on an arbitrary floor and connected to a plurality of drainage devices including a toilet bowl, wherein each drainage device drains a drainage stack or a square or manhole. A drainage system characterized in that all pipes communicating with a water tank or an external public sewer have the same pipe diameter. 2. The drainage system according to claim 1, wherein said drain horizontal branch pipe has a nominal pipe diameter of 50 mm. 3. A drain horizontal branch pipe connected to a plurality of drainage devices including a toilet, which is installed on any one floor, has a nominal pipe diameter for a drain pipe connected to the toilet. 50
mm, and a drain pipe connected to other drainage devices has a pipe nominal pipe diameter of 50 mm or less. 4. In the drainage horizontal branch pipe, drainage discharged from each drainage device including a toilet bowl is partially or entirely merged with each other, and then the drainage stack or a drainage tank such as a square or a manhole. 4. The drainage system according to claim 1, wherein the drainage system is transported to an external public sewer. 5. In the drain horizontal branch pipe, when part or all of the toilet drainage and miscellaneous drainage respectively discharged from each drainage device including the toilet bowl, the drainage from the toilet bowl is always upstream. 5. The drainage system according to claim 4, wherein the drainage from the drainage device other than the toilet is merged downstream from the toilet. 6. The drainage system according to claim 5, wherein the drainage from each drainage device other than the toilet bowl flows into the junction at an angle of 45 ° or less in the horizontal drainage pipe. 7. The drainage horizontal branch pipe according to claim 5, further comprising a flow rate adjusting means for adjusting a flow rate of drainage from each drainage device other than a toilet bowl into a junction. Drainage system. 8. The drainage system according to claim 5, wherein a flow rate measuring means for measuring a flow rate of toilet wastewater flowing through the drainage pipe is provided in the drainage horizontal branch pipe. 9. The flow rate adjusting means adjusts an inflow rate of drainage from each drainage device other than a toilet according to a flow rate of toilet drainage flowing through a drainage pipe measured by the flow rate measuring means. 9. The drainage system according to claim 8, wherein 10. The drainage horizontal branch pipe according to claim 5, wherein drainage from each drainage device other than the toilet bowl joined to the drainage pipe flows down along the pipe wall surface. Drainage system. 11. The drainage system according to claim 5, wherein a check valve is provided upstream of the junction in the drain horizontal branch pipe of each drainage device other than the toilet. 12. The drainage device including the toilet bowl is provided with individual ventilation means.
The drainage system according to any one of the above.