JP6789060B2 - Siphon drainage system - Google Patents

Description

The present invention relates to a siphon drainage system.

As a siphon drainage system, for example, the siphon drainage system disclosed in Patent Document 1 is known. The siphon drainage system consists of a horizontal pipe that is placed on the floor and allows drainage from water supply equipment to flow in the horizontal direction, and a vertical pipe that is placed vertically on the downstream side of the horizontal pipe to generate siphon force. It is equipped with a siphon drainage pipe that includes a drop portion that connects the horizontal pull pipe and the vertical pipe. In the siphon drainage system, when drainage is discharged from the water supply equipment, the horizontal pulling pipe first becomes full, then the vertical pipe becomes full, and the drainage that becomes full in the vertical pipe falls, causing the siphon. It generates force and drains efficiently.

Japanese Unexamined Patent Publication No. 2012-219526

However, if the floor surface is uneven, in other words, as an example, if the horizontal pulling pipe arranged on the floor surface is inclined downward toward the downstream direction, it is lateral as compared with the case where it is horizontal. It takes time for the inside of the pull pipe to fill up. As a result, it may take time for the vertical pipe to become full, and it may take time for the vertical pipe to generate a siphon force.

This is because if there is a slope on the upstream side of the horizontal pulling pipe, when drainage starts to flow from the water supply equipment, the air will be on the upper side and the drainage will be on the lower side on the upstream side in the pipe. This is because it takes time for the upstream side of the horizontal pulling pipe to become full because the air in the water flows back toward the upstream side. On the other hand, when the upstream side of the horizontal pulling pipe is non-gradient, the air in the pipe is discharged from the water supply and flows to the downstream side together with the drainage flowing toward the downstream side, so that the upstream side of the horizontal pulling pipe is short. It will be full in time.
In the conventional siphon drainage system, since the horizontal pulling pipe is arranged directly on the floor surface, the construction work for leveling the non-land floor surface, in other words, the non-land adjustment is complicated, and there is room for improvement. ..

In consideration of the above facts, an object of the present invention is to provide a siphon drainage system capable of improving construction work when the floor surface is uneven.

The siphon drainage system according to claim 1 includes a horizontal pulling pipe that allows drainage from a water supply device to flow laterally, a vertical pipe that is arranged downstream of the horizontal pulling pipe in the drainage direction and extends in the vertical direction, and the above. A drop-in portion connecting the horizontal pull pipe and the vertical pipe is provided, and a non-gradient first non-gradient portion separated from the floor surface is provided on the upstream side of the horizontal pull pipe in the drainage direction. On the downstream side of the pipe in the drainage direction, a slope portion having a slope that descends toward the downstream side in the drainage direction is provided.

In the siphon drainage system according to claim 1, since the first non-gradient portion separated from the floor surface is arranged on the upstream side of the horizontal pull pipe in the drainage direction and the slope portion is arranged on the downstream side in the drainage direction, the upstream side. The time until the inside of the horizontal pulling pipe becomes full can be shortened as compared with the case where the sloped portion is provided in the pipe and the non-graded portion is provided on the downstream side. Similarly, the siphon force can be generated quickly. In other words, the siphon drainage system according to claim 1 can start up the siphon as quickly as the siphon drainage system in which the entire horizontal pulling pipe is horizontal.

In order to speed up the start-up of the siphon, in the conventional siphon drainage system, when the floor on which the horizontal pulling pipe is placed is uneven, the construction work is complicated because it is leveled over the entire length of the horizontal pulling pipe. It was. However, in the siphon drainage system according to claim 1, a slope portion is provided on the downstream side in the drainage direction of the horizontal pulling pipe, and it is not necessary to keep the horizontal pulling pipe horizontal over the entire length of the horizontal pulling pipe. The construction work to be placed can be simplified. It should be noted that the slope portion only needs to be sloped so as to descend toward the downstream side in the drainage direction on the downstream side of the horizontal pulling pipe, and even if the magnitude of the slope changes in the middle, it has almost no effect on the activation of the siphon. Since there is no such thing, the construction work is easier than when it is leveled.

According to the second aspect of the present invention, in the siphon drainage system according to the first aspect, the slope portion is provided closer to the vertical pipe than the water supply device.

In the siphon drainage system according to claim 2, the slope portion is provided on the downstream side of the horizontal pulling pipe, but when it is provided on the downstream side closer to the vertical pipe and when it is provided on the water supply device side. Comparing the above, it is possible to start the siphon faster if it is installed closer to the vertical pipe.

The invention according to claim 3 is the siphon drainage system according to claim 2, wherein the slope portion is 20 of the total length of the horizontal pull pipe from the end portion of the horizontal pull pipe on the drop portion side to the upstream side. It is provided within the range of%.

In the siphon drainage system according to claim 3, the slope portion is provided within a range of 20% or less of the total length of the horizontal pulling pipe from the end of the horizontal pulling pipe to the upstream side. The siphon can be started faster than it is installed inside.

The invention according to claim 4 is the siphon drainage system according to any one of claims 1 to 3, wherein the horizontal pulling pipe has a second non-gradient slope on the downstream side of the slope portion. A part is provided.

As the drop portion used in the siphon drainage system, for example, a commercially available L-shaped pipe joint can be used. The L-shaped pipe joint is provided with straight portions on both sides of the arc portion, and the angle formed by one straight portion and the other straight portion is 90 °. Therefore, if one straight portion is connected to a vertical pipe extending in the vertical direction, the other straight portion will be arranged horizontally. When such an L-shaped pipe joint is used as a drop portion, the other straight portion of the L-shaped pipe joint located on the downstream side of the slope portion becomes a non-gradient, that is, a second non-gradient portion. ..

The invention according to claim 5 is the siphon drainage system according to any one of claims 1 to 4, wherein the first non-gradient portion is separated from the floor surface by a support member arranged on the floor surface. Has been done.

In the siphon drainage system according to claim 5, since the first non-gradient portion is separated from the floor surface by a support member arranged on the floor surface, the floor surface can be easily adjusted by adjusting the height of the support member. The influence of the non-landing can be blocked, and the horizontal pulling pipe can be installed without complicated adjustment of the non-landing on the floor surface.

The invention according to claim 6 has a gradient of 1/50 to 1/2000 in the siphon drainage system according to any one of claims 1 to 5.

By setting the slope of the slope portion to 1/50 to 1/2000, the lateral pulling pipe can be quickly filled up and the siphon force can be quickly generated. Since the slope portion may be lowered toward the downstream side in the drainage direction, the slope may change in the middle as long as it is within the range of 1/50 to 1/2000. If the gradient is larger than 1/50, it takes time to fill the horizontal pipe with full flow, which may delay the start-up of the siphon. Further, when the slope becomes larger than 1/50, the height of the horizontal pulling pipe (the position of the first non-gradient part) becomes high, and the height under the floor (for example, between the concrete floor slab and the floor material of the room). (Vertical dimension) needs to be increased.
On the other hand, when the gradient is smaller than 1/2000, it becomes almost horizontal, so that it takes time and effort for the construction work to make the horizontal pulling pipe horizontal.

As described above, the siphon drainage system of the present invention has an excellent effect that the construction work when the floor surface is uneven can be improved.

It is a side view which shows the siphon drainage system which concerns on 1st Embodiment of this invention. It is a side view which shows the main part of the siphon drainage system which concerns on 1st Embodiment of this invention.

[First Embodiment]
A first embodiment of the siphon drainage system according to the present invention will be described with reference to FIG. FIG. 1 shows an outline of the overall configuration of the siphon drainage system 10 according to the present embodiment. The siphon drainage system 10 according to the present embodiment is a drainage system that efficiently discharges drainage from a water supply device by utilizing siphon force.

As shown in FIG. 1, the siphon drainage system 10 of the present embodiment is used for an apartment house composed of a plurality of floors (only a predetermined floor is shown in FIG. 1). The apartment house is provided with a drainage stand 12 for draining drainage downward. The drainage pipe 12 extends in the vertical direction (vertical direction) of the apartment house and penetrates the concrete floor slab 14 on each floor of the apartment house. The siphon drainage system according to the present invention is preferably used for an apartment house, but can also be used for a detached house, a factory, or the like other than the apartment house.

Each house on each floor of an apartment house is provided with a water supply device 16 as an example of the water supply device of the present invention on the floor material 17, and the water supply device 16 has a drain trap on the downstream side in the drainage direction. 18 is connected. A first L-shaped piping member 20 bent in an L shape is arranged on the downstream side of the drain trap 18 in the drainage direction. The first L-shaped piping member 20 includes a vertical portion 20A connected to the drain trap 18 and extending in the vertical direction, a horizontal portion 20B horizontally arranged on the floor slab 14 and extending in the horizontal direction, and a vertical portion 20A and a horizontal portion. It is configured to include a curved portion 20C connecting the 20B. As the first L-shaped piping member 20, as an example, a commercially available product (also referred to as an elbow) formed of a synthetic resin such as a rigid vinyl chloride resin can be used.

On the downstream side of the first L-shaped piping member 20 in the drainage direction, a horizontal pulling pipe member 22 extending in the lateral direction is arranged. For the horizontal pulling pipe member 22 of the present embodiment, a flexible synthetic resin pipe having a nominal diameter of 20 as defined in JIS K6778 and JISK6792 is used. As the synthetic resin pipe used for the horizontal pulling pipe member 22, for example, a polybutene pipe can be used, but other types of synthetic resin pipes can also be used. Further, the horizontal pulling pipe member 22 is not limited to the one having a nominal diameter of 20, and 25 may be used. The lateral direction is not limited to the horizontal direction, which is 90 ° with respect to the vertical direction, but refers to a range of 90 ° ± 5 ° with respect to the vertical direction. 90 ° + 5 ° means that the downstream side in the drainage direction is inclined so as to be higher than the upstream side, and 90 ° -5 ° means that the downstream side is inclined so as to be lower than the upstream side. It means that it is.

A second L-shaped piping member 26 bent in an L-shape is arranged on the downstream side of the horizontal pulling pipe member 22 in the drainage direction. The second L-shaped piping member 26 includes a horizontal portion 26A arranged on the floor slab 14 and extending in the horizontal direction, a vertical portion 26B extending in the vertical direction, and a curved portion 26C connecting the horizontal portion 26A and the vertical portion 26B. It is configured. As the second L-shaped piping member 26, as an example, a commercially available product (also referred to as an elbow) formed of a synthetic resin such as a rigid vinyl chloride resin can be used.

(Support structure of horizontal pulling pipe member)
The horizontal pulling pipe member 22 is provided with a first horizontal portion 22A having no gradient on the water circulation equipment 16 side, and is opposite to the water circulation equipment 16 side of the horizontal portion 22A, in other words, on the downstream side, on the upstream side. An inclined portion 22B having a slope is provided so as to descend from the slope toward the downstream side, and a second horizontal portion 22C having no slope is provided on the downstream side of the inclined portion 22B.

Here, the gradient of the inclined portion 22B is preferably in the range of 1/50 to 1/2000, the upper limit is more preferably 1/200, further preferably 1/500, and 1 /. It is more preferably 1000. The inclined portion 22B does not have to be a constant gradient as long as the gradient is within the range of 1/50 to 1/2000, and may be changed. In addition, in this embodiment, "no gradient or no gradient" means horizontal or the case where the gradient is smaller than 1/2000.

In the horizontal pulling pipe member 22, the first horizontal portion 22A is connected to the horizontal portion 20B of the first L-shaped piping member 20 via the joint 28, and the second horizontal portion 22C is connected to the second L-shaped piping via the joint 30. It is connected to the horizontal portion 26A of the member 26.

The intermediate portion of the lateral pulling pipe member 22 in the longitudinal direction, in the present embodiment, a plurality of positions of the first horizontal portion 22A are horizontally supported by a plurality of support members 32 erected on the floor slab 14. The first horizontal portion 22A is separated upward from the floor slab 14. In the present embodiment, the inclined portion 22B of the horizontal pulling pipe member 22 is not supported by the support member 32, but may be supported by the support member 32.

As the support member 32, a commercially available product for supporting the pipe can be used regardless of the structure as long as the lateral pull pipe member 22 can be supported by separating it from the floor slab 14. Further, as the support member 32, it is preferable to use a member whose height for supporting the floor slab 14, in other words, the height dimension from the floor slab 14 to the horizontal pull pipe member 22 can be adjusted with screws or the like.

A vertical pipe member 34 extending in the vertical direction is arranged on the downstream side of the second L-shaped pipe member 26 in the drainage direction. The vertical pipe member 34 is connected to the vertical portion 26B of the second L-shaped pipe member 26 via a joint 36. The end of the vertical pipe member 34 on the downstream side in the drainage direction is connected to the merging joint 38 attached to the intermediate portion of the drainage stand pipe 12. In addition, the same pipe as the horizontal pulling pipe member 22 is used for the vertical pipe member 34 of this embodiment.

In the present embodiment, the piping portion arranged on the upper side of the floor slab 14, specifically, the horizontal portion 20B of the first L-shaped piping member 20, the horizontal pulling pipe member 22, and the horizontal portion 26A of the second L-shaped piping member 26 The horizontal pulling pipe 42 of the siphon drainage pipe 40 (an example of the horizontal pulling pipe of the present invention) is configured, and the vertical portion 26B of the second L-shaped piping member 26 and the vertical pipe member 34 make up the vertical pipe 44 of the siphon drainage pipe 40 (this). An example of the vertical pipe of the invention) is configured. Further, the curved portion 26C of the second L-shaped piping member 26 corresponds to the recessed portion of the present invention. The total length of the horizontal pulling pipe 42 can be extended to, for example, 14 m.

Further, in the horizontal pulling pipe 42 of the siphon drain pipe 40 of the present embodiment, the horizontal portion 20B of the first L-shaped piping member 20 and the horizontal portion 26A of the horizontal pulling pipe member 22 are the first non-gradient portion 46 (in the present invention). It is an example of the first non-gradient part). Further, the inclined portion 22B of the horizontal pulling pipe member 22 is a gradient portion 48 (an example of the inclined portion of the present invention). The second horizontal portion 22C of the horizontal pulling pipe member 22 and the horizontal portion 26A of the second L-shaped piping member 26 are designated as the second non-gradient portion 50 (an example of the second non-gradient portion of the present invention). In the siphon drainage system 10 of the present embodiment, the horizontal pull pipe member 22 is bent between the first non-gradient portion 46 and the slope portion 48, and between the slope portion 48 and the second non-gradient portion 50. There is.

The gradient portion 48 is preferably arranged on the downstream side of the position P, which is half of the total length of the horizontal pulling pipe 42 (dimension L in FIG. 1). The downstream side of the horizontal pulling pipe 42 of the present embodiment refers to the vertical pipe 44 side starting from the position P which is half of the total length of the horizontal pulling pipe 42, and the upstream side of the horizontal pulling pipe 42 of the present embodiment. Refers to the side of the water supply device 16 starting from the position P which is half of the total length of the horizontal pulling pipe 42. The gradient portion 48 can be said to be a gradient portion when compared with the first non-gradient portion 46 and the second non-gradient portion 50.

(Action, effect)
According to the siphon drainage system 10 of the present embodiment, the drainage discharged from the water supply device 16 passes through the drain trap 18, the first L-shaped piping member 20, the siphon drainage pipe 40, and the confluence joint 38 to the drainage stand pipe 12. Meet.

Here, when the drainage from the water supply device 16 flows into the siphon drainage pipe 40, the upstream of the horizontal pulling pipe 42 is first filled with drainage, and then the drainage maintained in the full state flows toward the downstream and the vertical pipe 44. Flow into. When the filled drainage falls in the vertical pipe 44 due to gravity, a siphon force is generated in the vertical pipe 44. Then, the drainage inside the horizontal pulling pipe 42 is sucked toward the vertical pipe 44 by the siphon force and flows down, so that the drainage is efficiently performed.

Further, in the siphon drainage system 10 of the present embodiment, a first non-gradient portion 46 having a non-gradient distance from the floor slab 14 is arranged on the upstream side of the horizontal pull pipe 42 in the drainage direction, and a slope portion 46 is arranged on the downstream side thereof. Since 48 are arranged, the siphon force can be generated quickly.
When the slope portion 48 is arranged on the upstream side of the position of half of the total length of the horizontal pulling pipe 42, the inside of the horizontal pulling pipe is located on the downstream side of the position of half of the total length. It takes time to reach full flow, and the siphon startup is delayed.

In the siphon drainage system 10 of the present embodiment, since the horizontal portion 26A of the horizontal pull pipe member 22 is separated upward from the floor slab 14 by the support member 32, even if the upper surface of the floor slab 14 is uneven. , The floor slab 14 can be arranged horizontally without being affected by the non-landing, in other words, it can be made slopeless.

If the upper surface of the floor slab 14 is uneven, if the flexible horizontal pulling pipe member 22 is placed directly on the floor slab 14, the horizontal pulling pipe member 22 will be adjusted to the inclination of the floor slab 14. Tilt. For this reason, in the conventional siphon drainage system construction method, when the horizontal pulling pipe member is arranged horizontally, complicated non-landing adjustment is performed so that the upper surface of the slab becomes horizontal.

In the siphon drainage system 10 of the present embodiment, the inclined portion 48 (inclined portion 22B) is provided in a part of the horizontal pulling pipe member 22, and the entire horizontal pulling pipe 42 is not made non-gradient. The non-slope portion of 42, in other words, the first non-slope portion 46, is supported by a support member 32 erected on the concrete floor slab 14, and the concrete floor slab 14 is not landed. Since there is no need to adjust, the construction work related to piping can be simplified.

When the slope portion 48 is provided in a part of the horizontal pulling pipe 42, it is preferable to provide it on the vertical pipe 44 side as much as possible in order to quickly fill the inside of the horizontal pulling pipe 42. For example, it is preferable that the slope portion 48 is provided from the downstream end of the horizontal pulling pipe 42 to the upstream side up to a position of 20% of the total length L of the horizontal pulling pipe 42. As an example, when the total length L of the horizontal pulling pipe 42 is 14 m, it is preferable to provide the gradient portion 48 between the downstream end portion of the horizontal pulling pipe 42 and the upstream side up to 2.8 m. This is because if it exceeds 20%, the flow from the upstream side becomes faster, and the full flow in the pipe becomes slower.

[Second Embodiment]
Next, the siphon drainage system 10 according to the second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 2, in the siphon drainage system 10 according to the second embodiment, a T-shaped joint 52 is provided between the second L-shaped piping member 26 and the horizontal pulling pipe member 22. The T-shaped joint 52 includes a main pipe portion 52A that communicates the second L-shaped piping member 26 and the lateral pulling pipe member 22, and a branch pipe portion 52B that projects laterally from the intermediate portion of the main pipe portion 52A. ing.

In the present embodiment, the main pipe portion 52A is arranged horizontally to form a part of the second non-gradient portion 50 of the horizontal pulling pipe 42. Further, the branch pipe portion 52B is directed upward, and normally, the end portion of the branch pipe portion 52B is closed with a removable lid 54.

In the siphon drainage system 10 of the present embodiment, for example, when cleaning the inside of the horizontal pulling pipe 42 or the vertical pipe 44, the lid 54 is removed from the T-shaped joint 52, and the cleaning hose or the like is laterally placed from the branch pipe portion 52B. By inserting it into the pull pipe 42 or the vertical pipe 44, it is possible to clean the inside of the horizontal pull pipe 42 or the vertical pipe 44.

(Test example)
In order to confirm the effect of the siphon drainage system of the present invention, a siphon drainage system to which the present invention was applied and a siphon drainage system according to a comparative example were prototyped and a drainage test was conducted.
The specifications of the siphon drainage system used in the test are described below.
Comparative Example 1: A siphon drainage system in which the horizontal pulling pipe is not sloped.
Comparative Example 2: A siphon drainage system in which the upstream side of the horizontal pulling pipe is sloped and the downstream side is not sloped.
Example: A siphon drainage system with a slope on the downstream side of the horizontal pull pipe and no slope on the upstream side.
In the test, drainage was continuously performed from the water supply equipment, and the siphon force generation status was compared.
Overall length of horizontal pulling pipe: 14m
Overall length of vertical pipe: 3m
Nominal diameter of pipe material for horizontal pulling pipe member and vertical pipe member: 20

In Table 1 above, the first time when the siphon is generated represents the time from the start of drainage from the water supply device to the time when the siphon is generated in the vertical pipe. The occurrence of the siphon was determined by connecting a pressure gauge to the drop portion (second L-shaped piping member 26) and creating a negative pressure inside the drop portion.

Here, when the drainage starts to flow and the inside of the pipe becomes full, a siphon is generated, and the vertical pipe sucks the drainage on the upstream side, but when the amount sucked by the vertical pipe exceeds the amount drained from the water supply device, the siphon The full flow state in the drain pipe is partially eliminated and the generation of siphon is interrupted once, and then the inside of the pipe becomes full again and siphon is generated, and the vertical pipe sucks the drainage on the upstream side. That is, siphons occur intermittently and repeatedly.
In Table 1 above, the average interval (seconds) represents the average value of the siphon generation intervals (seconds) when siphons occur intermittently.

As a result of the test, when the amount of drainage was relatively large (8 L / min), siphons could be repeatedly generated in both Comparative Examples 1 and 2 and Example 1 to which the present invention was applied. Further, it can be seen that Example 1 can generate the first siphon earlier than that of Comparative Example 2.
On the other hand, when the amount of drainage is relatively small (6 L / min), the siphon drainage system of Example 1 was able to continuously generate siphons as in Comparative Example 1 without a gradient, but on the upstream side. In the siphon drainage system of Comparative Example 2 with a gradient only to, the siphon force was generated only once, but after that, the pipe did not fill up, and as a result, the siphon force was not continuously generated (hence, The average interval in Table 1 is not shown).

[Other Embodiments]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and it goes without saying that the present invention can be variously modified and implemented within a range not deviating from the gist thereof. Is.

In the above embodiment, a flexible synthetic resin pipe is used for the horizontal pulling pipe member 22, but a rigid vinyl chloride pipe having no flexibility may be used. If the total length of the horizontal pull pipe member 22 is short and the horizontal pull pipe member 22 does not bend, the horizontal pull pipe member 22 does not have to be supported by the support member 32.

In the above embodiment, the first L-shaped piping member 20 and the horizontal pulling pipe member 22 are connected via a joint 28, and the drainage from the water supply device 16 directly flows into the horizontal pulling pipe member 22. However, a storage tank is provided on the upstream side of the horizontal pulling pipe member 22 to temporarily store the drainage from the water supply equipment 16 or to temporarily store and drain the drainage from a plurality of water supply equipment. , The drainage from the storage tank may be allowed to flow into the horizontal pulling pipe member 22.

Examples of the water supply device 16 include a washbasin, a washing machine, a kitchen sink, a bath, a dishwasher, and the like, but any type of water-draining device can be used. You may.

10 ... Siphon drainage system, 14 ... Slab (floor surface), 16 ... Water supply equipment, 22C ... Second horizontal part (second non-gradient part), 26A ... Horizontal part (second non-gradient part), 26C ... Curved part (Dropped part), 32 ... Support member, 42 ... Horizontal pulling pipe, 44 ... Vertical pipe, 46 ... First non-gradient part, 48 ... Gradient part, 50 ... Second non-gradient part

Claims (6)

A horizontal pulling pipe that allows drainage from water supply equipment to flow laterally,
A vertical pipe located downstream of the horizontal pulling pipe in the drainage direction and extending in the vertical direction,
A drop portion connecting the horizontal pulling pipe and the vertical pipe,
Prepare
On the upstream side of the horizontal pulling pipe in the drainage direction, a non-gradient first non-gradient portion separated from the floor surface is provided.
A siphon drainage system in which a slope portion having a gradient that descends toward the downstream side in the drainage direction is provided on the downstream side in the drainage direction of the horizontal pulling pipe. The siphon drainage system according to claim 1, wherein the slope portion is provided closer to the vertical pipe than the water supply device. The siphon drainage system according to claim 2, wherein the slope portion is provided within 20% of the total length of the horizontal pull pipe from the end portion of the horizontal pull pipe on the drop portion side to the upstream side. .. The siphon drainage system according to any one of claims 1 to 3, wherein the horizontal pulling pipe is provided with a non-gradient second non-gradient portion on the downstream side of the slope portion. The siphon drainage system according to any one of claims 1 to 4, wherein the first non-gradient portion is separated from the floor surface by a support member arranged on the floor surface. The siphon drainage system according to any one of claims 1 to 5, wherein the gradient of the gradient portion is 1/50 to 1/2000.