JP6320597B2 - Drain pipe piping structure - Google Patents

Description

  The present invention relates to a drain pipe structure in which a pipe path for processing excrement generated when a portable toilet is used is connected to a drain path connected to a flush toilet and a public basin.

  2. Description of the Related Art Conventionally, portable toilets (simple toilets) newly disposed on the bedside or the like for nursing care are well known apart from existing indoor toilets. However, in general portable toilets, caregivers had to work on the excrement collected in the portable toilet buckets, which put a great mental and physical burden on the caregivers. Therefore, as a technique for solving the above problem, the portable toilet and the existing drain pipe piping route are connected, and a drainage device for forcibly flowing the waste is installed to remove the waste collected in the portable toilet. A configuration for flowing down the road has been proposed. There are generally two types of drainage devices used in such a configuration, a negative pressure type device and a pressure type device.

  For example, Patent Documents 1 to 4 disclose a negative pressure drainage device, which is arranged upstream of the drainage drain, operates a negative pressure pump, evacuates the negative pressure tank, and opens the valve. Then, the excrement accumulated in the portable toilet is sucked, and the sucked excrement is dropped below the negative pressure tank and allowed to flow down to the existing drain pipe piping path. Further, for example, Patent Document 5 discloses a pressurized drainage device, which is disposed in the vicinity of a portable toilet, operates a pumping pump, and in a pumping tank disposed downstream of the toilet bowl. The excrement that has flowed into the pipe is pumped down to the existing drainage pipe route.

JP-A-10-195960 JP 2000-139769 A JP 2000-139770 A Japanese Patent No. 4064994 Japanese Patent No. 4258240

  However, the conventional drain pipe structure using the drainage device disclosed in the above patent document has the following problems.

  When a drain pipe piping path including a portable toilet is newly connected to an existing drain pipe piping path, the amount of water discharged from the portable toilet is small, so excrement tends to remain in the drain pipe piping. In particular, such excrement residue tends to occur at a position where an existing drain pipe piping path is connected to a new drain pipe piping path. Here, generally, a plurality of sanitary wares, that is, large and small urinals, basins, bathtubs, sinks, etc., are connected to the existing drain pipe piping route, and the drainage from the sanitary wares is directed to the public public outdoor. It is configured to flow down. Therefore, when the sanitary appliance is used in a state where excrement remains in the existing drain pipe, the excrement may flow back through the route, which may hinder the use of the sanitary appliance. there were.

  In addition, depending on the layout of the building, the distance between the existing drain pipe piping path and the portable toilet becomes excessively long relative to the drainage capacity of the drainage device, or the installation position of the drainage device is limited, The drainage capacity of the drainage device may not be exhibited properly. Then, excrement flowing down from the portable toilet is likely to accumulate in the new drain pipe piping path that connects between the portable toilet and the existing drain pipe piping path, or a portable toilet having the drainage function as described above is installed. Problems such as being unable to do so occur.

  Accordingly, the present invention suitably prevents the excrement flowing down from the portable toilet from accumulating in the middle of the piping path, and allows the portable toilet to be used satisfactorily without hindering the use of existing sanitary equipment. The purpose is to provide.

  The present invention relates to a flush toilet and portable toilet disposed indoors, and a drain pipe piping structure having a drainage basin and a public basin disposed outdoors, the drain pipe piping structure including the flush toilet A first plumbing path including a toilet bowl and a pipe having an upstream end connected to the flush toilet and a downstream end connected to the public bowl via the drain A second piping path including the portable toilet and a pipe having an upstream end connected to the portable toilet and a downstream end connected to the first piping path, and disposed in the second piping path, A drainage device for forcibly flowing down the waste accumulated in the portable toilet, and the second piping path includes a forced flow-down section in which the waste is forced to flow down by the drainage device, The excreta is released from the flow-down section toward the first piping route. A natural flow section that flows down to the pipe, and a pipe that forms the natural flow section has a predetermined drainage gradient, and the drainage device passes through a pipe that forms the forced flow section. The apparatus is a pressure-feed type device that pumps excrement by pressurization, and further, a lift-up part is provided at the downstream end of the second piping path corresponding to the forced flow-down section, and the lift-up part is excreted. Drainage characterized by having a pipe extending upward as it goes in the downstream direction in which an object is sent, wherein the downstream end of the lift-up part is connected to the upstream end of the natural flow section It is a pipe piping structure.

  In such a configuration, the flush toilet bowl has a large amount of water that flows down during use, and the frequency of use is relatively high. Therefore, even if waste discharged from the portable toilet is accumulated in the first piping path, the flush toilet A large amount of drainage from the toilet becomes additional water, and the excrement can flow smoothly to the public. Further, since the pipes constituting the natural flow section have a predetermined drainage gradient, even if the full length of the natural flow section is sufficiently secured, excrement does not accumulate in the natural flow section. Can be ensured. This makes it possible to eliminate design restrictions such as the necessity to install the drainage device in the vicinity of the first piping route, and even if the drainage capacity of the drainage device is limited, portable toilets and drainage There is an advantage that the degree of freedom of the installation position of the apparatus is improved. The above-described configuration of the present invention includes one in which a drainage device is built in a portable toilet.

  In addition, flush toilets and portable toilets installed indoors, and drain pipe piping structures having drainage basins and public tanks installed outdoors, which drain pipe piping structures are connected to the flush toilets And a first plumbing path including a pipe having an upstream end connected to the flush toilet and a downstream end connected to the public trough via the drainage basin, A portable toilet, a second piping path including an upstream end connected to the portable toilet and a downstream end connected to the first piping path, and the portable toilet disposed in the second piping path; A drainage device for forcibly flowing down the waste accumulated in the toilet, and the second piping path includes a forced flow-down section where the waste is forced to flow down by the drainage device, and the forced flow-down section The excrement naturally goes from the A natural flow section that is lowered, and a pipe that constitutes the natural flow section has a predetermined drainage gradient, and the forced flow section is provided between the portable toilet and the drainage device. The natural flow section is composed of a pipe disposed between the drainage device and the first piping path, and the drainage device constitutes the forced flow section. There is a case of a negative pressure suction type device that sucks excrement in the pipe by negative pressure.

  By setting it as this structure, the said drainage apparatus can be suitably arrange | positioned in desired positions, such as the vicinity of the outer peripheral wall of a building, for example.

  Further, in the drain pipe structure according to the present invention, the drainage device is a pumping type device that pumps excrement by pressurization through a pipe constituting the forced flow-down section, and further corresponds to the forced flow-down section. A lift-up portion is provided at the downstream end of the second piping path, and the lift-up portion has a pipe extending upward toward the downstream direction in which excrement is sent, and the lift-up portion Is connected to the upstream end of the natural flow section.

  By adopting such a configuration, it is possible to arrange the upstream end of the natural flow section as high as possible, so that the drainage capacity of the drainage device is limited and the total length of the forced flow section may be long. Even if this is not possible, it is possible to construct a second piping path by appropriately providing a drainage gradient of the pipe in the natural flow section and sufficiently securing the entire length of the natural flow section.

  The said structure WHEREIN: It is desirable that the downstream edge part of said 2nd piping path is connected to the said drainage basin.

  In such a configuration, it is possible to easily confirm the internal situation such as whether the excrement flowing down from the portable toilet is flowing down normally through the drainage basin.

  Furthermore, it is desirable that the slope of the pipe constituting the natural flow section is 1/50 or more.

  In this way, by setting the gradient so that it descends 10 cm vertically downward as it advances 5 m in the horizontal direction in the natural flow down section, it is possible to ensure appropriate scavenging performance and excretion in the pipes constituting the natural flow down section. It is possible to prevent things from being deposited.

  Moreover, it is desirable that the inner diameter of the pipe constituting the natural flow section is larger than the inner diameter of the pipe constituting the forced flow section.

  By adopting such a configuration, the drainage can be smoothly allowed to flow at the site where the forced flow section transitions to the natural flow section, the accumulation of excrement is prevented, and the use of other sanitary instruments is not hindered. Can be.

  Furthermore, it is preferable that the inner diameter of the pipe constituting the natural flow section is 50 mm or more.

  By setting it as this structure, the scavenging property of waste_water | drain can be made still higher.

  Moreover, it is desirable that the inner diameter of the pipe constituting the forced flow down section is 20 mm or less.

  In such a configuration, the pipeline in the forced flow down section can be compactly piped in the building. Furthermore, even if the drainage device is a negative pressure suction type or a pressure feed type, the load applied to the device can be reduced as the inner diameter of the pipe constituting the forced flow down section is reduced, so that the energy cost is reduced. Will be able to. However, if the inner diameter of the pipe is excessively small, resistance during excretion flow increases and causes “clogging”. Therefore, the inner diameter of the pipe constituting the forced flow-down section is preferably 16 mm or more.

  Further, a difference in height of 30 cm or more is provided between the tube bottom at the downstream end of the lift-up portion and the tube bottom at the lowermost end portion of the pipes constituting the forced flow down section. desirable.

  By adopting such a configuration, a configuration in which the slope of the piping in the natural flow section is 1/50 or more can be easily designed and constructed. For example, if the upstream end of the natural flow section is configured to rise 30 cm as compared to a configuration not employing this configuration, a distance of 15 m can be obtained horizontally as a 1/50 gradient. become. Therefore, even if the design condition is such that the separation distance between the drainage device and the first piping path is considerably long, it is possible to reasonably provide the piping gradient in the natural flow section.

  In addition, flush toilets installed indoors, drains installed outdoors, and public masts, the upstream end is connected to the flush toilet and the downstream end is connected to the drainage basin. A new plumbing path including a portable toilet installed indoors and a pipe whose upstream end is connected to the portable toilet in an existing piping path including a pipe connected to the public basin It is a drainage pipe construction method for connecting downstream ends, and a process A in which a new drainage is added to the outdoor position of the pipe constituting the existing pipe route, and a building wall A step B for drilling a through-hole penetrating the inside and the outside, a drainage device for forcibly flowing down the waste accumulated in the portable toilet in the new pipe route, and a pipe constituting the new pipe route The excrement is inserted through the through-hole and discharged by the drainage device. Piping that constitutes a forced flow-down section that flows down in a controlled manner, and piping that forms a natural flow-down section having a predetermined drainage gradient from which excrement flows down naturally from the forced flow-down section toward the existing piping path It is good also as a drain pipe construction method characterized by including process C which arranges.

  By adopting such a configuration, it becomes possible to suitably connect a new piping path including a portable toilet disposed indoors to an existing piping path having an outdoor portion. Moreover, since the piping which comprises the said natural flow area has a predetermined | prescribed drainage gradient, excretion does not accumulate in this natural flow area, and sufficient scavenging property can be ensured. In addition, by providing drainage at the connection point between the existing piping path and the new piping path, the internal conditions such as whether the excrement flowing down from the portable toilet is flowing down normally are passed through the drainage drain. It can be easily confirmed. The wall portion of the building includes a ceiling wall and a side wall including the foundation.

  The drainage pipe structure of the present invention can suitably prevent the excrement flowing down from the portable toilet from accumulating in the middle of the piping path by using the drainage of the existing flush toilet. In addition, the portable toilet can be used satisfactorily without hindering the use of existing sanitary instruments. Furthermore, by providing a natural flow section in the second piping path, even if there is a limit to the drainage capacity of the drainage device, while ensuring sufficient scavenging performance in the natural flow section, such as portable toilets and drainage devices There is an effect that the degree of freedom of design for layout is dramatically improved. Moreover, the drain pipe construction method has an effect that the drain pipe construction can be constructed smoothly and simply.

Schematic which shows the drain pipe piping structure of Example 1. FIG. Explanatory drawing which shows the drain pipe piping structure of Example 1. FIG. Schematic which shows the drain pipe piping structure of Example 2. FIG. Explanatory drawing which shows the drain pipe piping structure of Example 2. FIG. Schematic which shows the drain pipe piping structure of Example 3. FIG. Explanatory drawing which shows the connection structure with the drainage basin of Example 3 and piping. Explanatory drawing which shows the drain pipe piping structure of Example 4. FIG. Schematic which shows the drain pipe piping structure of Example 5. FIG. Explanatory drawing which shows the drain pipe piping structure of Example 5. FIG. Explanatory drawing which shows the connection structure with the drainage basin and piping concerning other embodiment.

  Hereinafter, the example which actualized the drain pipe piping structure of the present invention is explained in detail. In addition, this invention is not limited to the example shown below, A design change is possible suitably.

[Example 1]
A drain pipe structure 1A according to Example 1 will be described with reference to FIGS.

  As shown in FIG. 1, the drain pipe structure 1 </ b> A includes a flush toilet 3 disposed inside a building 2 and a public urn 5 disposed outside the building 2. Then, the flush toilet 3 and the public stool 5, and the pipe connected to the flush stool 3 at the upstream end and connected to the public stool 5 at the downstream end are connected to the existing first A piping path 10 is configured. The flush toilet 3 is connected to a drain 30 buried outside on the first piping path 10, and about 3.8 liters or more of water is drained after one use. The general thing to be used is adopted suitably. The pipe constituting the first piping path 10 is composed of a pipe made of vinyl chloride and a joint for connecting the pipes, and in this embodiment, the inner diameter is 100 mm, and it may be set to 50 mm or more. .

  In addition to the flush toilet 3, sanitary appliances such as a wash basin 6, a bathtub 7, or a sink 8 are arranged inside the building 2, and these drains are buried outdoors. 60, 70, 80 and connected to the first piping path 10 via the drainage drains 60, 70, 80.

  Further, the drain pipe structure 1 </ b> A includes a portable toilet (simple toilet) 4 disposed indoors in the building 2. And the 2nd piping path | route 16 is comprised by this portable toilet 4 and piping by which the upstream edge part was connected to this portable toilet 4, and the downstream edge part was connected to said 1st piping path | route 10. .

  More specifically, the downstream end of the second piping path 16 is connected to the drainage basin 30 on the first piping path 10. As shown in FIG. 2, a branch pipe 36 is provided on the side wall of the drainage basin 30, and a pipe 14 constituting the second pipe path 16 is connected to the branch pipe 36. It should be noted that a guide member for appropriately guiding the drainage introduced from the second piping path 16 to the downstream side may be provided inside the drainage trough 30. For example, the drainage made of synthetic resin with an inner sub pipe disclosed in Japanese Patent No. 4646606 may be adopted. Further, the downstream end portion of the second piping path 16 may be connected to another drainage trough 60 on the first piping path 10. In the present embodiment, the second piping path 16 is a new piping path additionally constructed when starting to use the portable toilet 4 for nursing care.

  Further, as the portable toilet 4, a publicly known publicly known one can be suitably adopted, and it may be made of resin, wood, or earthenware. Moreover, although this portable toilet 4 is normally arrange | positioned at the bedside of a room | chamber interior, it may be set as the structure which can be moved by attaching a caster.

  Further, a negative pressure suction type drainage device 13 </ b> A is disposed on the downstream side of the portable toilet 4 and in the vicinity of the outer peripheral wall of the building 2 on the second piping path 16. More specifically, the drainage device 13A has a function of forcibly flowing down waste collected in the portable toilet 4 to the downstream side by a negative pressure. In this embodiment, the drainage device 13A has a drainage capacity. The total amount of drainage of the portable toilet 4 is about 0.5 liter. The drainage device 13A can suitably adopt a known configuration. For example, the inside of the device body is depressurized by a vacuum pump (not shown), and the excrement is discharged from the portable toilet 4 by the suction force when it is opened to the atmosphere. The thing of the structure which sucks the waste_water | drain containing is employable.

  Further, the second piping path 16 includes a forced flow-down section 12 in which excrement is forced to flow down by the drainage device 13A, and excrement flows down naturally from the forced flow-down section 12 toward the first piping path 10. And a natural downflow section 15. Specifically, the forced flow down section 12 is configured by a pipe 11 disposed between the portable toilet 4 and the drainage device 13A, and the natural flow down section 15 is connected to the drainage device 13A and the first drain. It is comprised by the piping 14 arrange | positioned between the piping paths 10. FIG.

  More specifically, the pipe 11 constituting the forced flow down section 12 is composed of a synthetic resin pipe having flexibility and shape so as to be compactly arranged in the room and having a metal reinforcing layer. Moreover, this piping 11 is 20 mm in internal diameter in this embodiment, Preferably it is 20 mm or less. On the other hand, the pipe 14 constituting the natural flow section 15 is made of a vinyl chloride pipe. Moreover, this piping 14 is 50 mm in internal diameter in this embodiment, Preferably it is 50 mm or more. In addition, it is preferable that the inner diameter of the pipe 14 constituting the natural flow section 15 is larger than the inner diameter of the pipe 11 constituting the forced flow section 12. Since it is necessary to maintain a predetermined drainage gradient as described later, the pipe 14 is preferably a rigid non-flexible pipe, but instead of the above configuration, a flexible polyethylene pipe, polybutene pipe, or the like It may be a bellows-like flexible tube.

  As shown in FIG. 2, the pipe 14 constituting the natural flow section 15 is provided with a drainage gradient of about 1/10 toward the drainage trough 30. The drainage gradient may be 1/50 or more.

  In the drain pipe structure 1A, excreta in the portable toilet 4 flows down the pipe 11 constituting the forced flow down section 12 in accordance with the drainage function of the drainage device 13A. Subsequently, the pipe 14 constituting the natural flow section 15 flows down naturally according to the gradient, and is introduced into the first pipe path 10 through the drainage basin 30. Here, since the flush toilet 3 is provided upstream of the first piping path 10, drainage when using the flush toilet 3 becomes additional water, and excrement from the portable toilet 4. Will drain properly toward the public mass 5 without being deposited in the drainage mass 30. Therefore, for example, when the washbasin 6 which is another sanitary facility is used, excrement can be prevented from flowing backward. Further, in the drain pipe piping structure 1A, since the drainage device 13A can be installed outdoors, a part of the indoor space is not occupied by the drainage device 13A. In addition, since the natural flow section 15 is provided in the second piping path 16, it becomes possible to extend the flow section of the excrement compared to the conventional one, so the location where the portable toilet 4 or the drainage device 13A is disposed can be reduced. It becomes possible to select freely to some extent. Further, since the drainage basin 30 is disposed at the connection point between the second piping path 16 and the first piping path 10, it is possible to easily check the flow of excrement through the drainage basin 30, and It is also possible to easily perform the cleaning through the drainage basin 30.

[Example 2]
The drain pipe structure 1B of Example 2 will be described with reference to FIGS. In addition, while the same code | symbol is attached | subjected to the structure similar to Example 1, description is simplified or abbreviate | omitted.

  In the drain pipe structure 1B, as shown in FIGS. 3 and 4, the downstream end of the pipe 14 made of a vinyl chloride pipe constituting the natural flow section 15 is washed with water in the first pipe path 10. It is connected via a branch pipe 24 to a pipe 25 that connects the toilet bowl 3 and the drain 30.

The drain pipe 1B is constructed according to the following procedure.
That is, a part of the pipe 25 constituting the first pipe path 10 is exposed, a required part of the exposed pipe 25 is drilled, and the branch pipe 24 is connected to the drilled part. Then, as shown in FIG. 4, the pipe 14 in the natural flow section 15 is connected to the branch pipe 24. As this construction method, a well-known method can be suitably employed. Instead of such a configuration, a part of the pipe 25 is cut off, a T-shaped joint is arranged at the cut-out portion, and the pipe 14 is connected to the inlet of the T-shaped joint. The pipe 25 may be connected.

[Example 3]
Next, the drain pipe structure 1C of Example 3 will be described with reference to FIGS. In addition, while the same code | symbol is attached | subjected to the structure similar to Example 1, 2, description is simplified or abbreviate | omitted.

  As shown in FIG. 5, the downstream end of the second piping path 16 is connected to a drainage basin 40 that has been added to the outdoor position of the first piping path 10. More specifically, as shown in FIG. 6, the drainage basin 40 is provided with an inspection port 41 so that it can be inspected and cleaned, and the inspection port 41 is normally shielded by a lid 42. Further, an inspection cylinder 45 is erected on the upper portion of the invert portion of the drainage basin 40, and a branch pipe 46 is attached to the inspection cylinder 45 and the pipe 14 is connected thereto. Thus, by adding the drainage basin 40 to a required position, the overall length of the second piping path 16 can be shortened as much as possible. Of course, the flow of excrement can be easily confirmed through the drainage basin 40, and cleaning can be easily performed through the drainage basin 40.

  In the drain pipe piping structure 1 </ b> C described above, in order to newly connect the second piping path 16 to the existing first piping path 10, it is simple and desirable that the construction is performed according to the procedure described below.

(Process A)
First, as shown in FIG. 5, an appropriate location outside the existing first piping path 10 is selected, and a drainage drain 40 is added. Specifically, the piping of the first piping path 10 buried by excavating the ground is exposed, the piping is partially excised, and the drain 40 is disposed at the excised location. At this time, as shown in FIG. 6, the inflow port 43 of the drainage basin 40 is arranged on the upstream side (the flush toilet 3 side), and the outflow port 44 is arranged on the downstream side (the public mass 5 side). Is positioned. In addition, the method of adding the drainage basin 40 can be suitably performed by a known method.

(Process B)
Next, as shown in FIG. 5, the side wall (outer wall) of the building 2 facing the room where the portable toilet 4 is arranged, or any other appropriate place is selected, and a through hole 17 penetrating the interior and the exterior is drilled. The inner diameter of the through-hole 17 can be inserted with an operation cord or the like (not shown) for operating the pipe 11 constituting the forced flow down section 12 and the drainage device 13A associated therewith after the portable toilet 4 is used. What is necessary is just a minimum dimension. In addition, the perforation method of this through-hole 17 can be suitably performed by a well-known method.

(Process C)
Moreover, the drainage device 13A is installed at a predetermined outdoor location. At the same time, the piping 11 connecting the portable toilet 4 and the drainage device 13A is inserted into the through hole 17 to construct the piping path of the forced flow down section 12, and the drainage basin 40 and the drainage device 13A are connected. The connecting piping 14 is provided, and the piping path of the natural flow section 15 is constructed.

  Here, when the piping path of the forced flow down section 12 is constructed, pipe joints are arranged in the through hole 17 or in the vicinity of the through hole 17, and both ends of the pipe joint are connected to indoor or outdoor side pipes. May be removable. By adopting such a configuration, it is convenient that the side wall of the building 2 can be removed as appropriate when changing the specifications of only the indoor side piping route or only the outdoor side piping route.

  Moreover, although the piping 14 which comprises the natural flow down area 15 is constructed so that it may become a 1/10 drainage gradient, it is preferable to set in the range of 1/50 or more. Further, the drainage gradient does not have to be constant over the entire length of the natural flow section 15, and the value of the drainage gradient may be partially different. However, in order to suppress the accumulation of excrement as much as possible, it is as constant as possible. It is desirable to keep the gradient.

  According to the construction method, it is easy to separately connect the portable toilet 4 and the drainage device 13A, which have not been taken into account when laying the existing first piping path 10, later.

[Example 4]
The drain pipe piping structure 1D of Example 4 will be described with reference to FIG. In addition, while the same code | symbol is attached | subjected to the structure similar to Examples 1-3, description is simplified or abbreviate | omitted.

  In the drain pipe structure 1D, a through hole 17 is provided in the foundation 20 of the building 2. More specifically, in the drain pipe piping structure 1D, a drain pipe leading from the indoor to the outside is already installed in the foundation 20, and specifically, a sheath pipe 17A embedded in advance in the foundation 20 placing process. And an inner tube 17B inserted into the sheath tube 17A. And when newly providing the said 2nd piping path | route 16, the penetration hole 18 was formed in the indoor floor part of the portable toilet 4 vicinity, the piping 11 was led under the floor via this penetration hole 18, and it was distribute | arranged under this floor The sheath tube 17A is inserted into the inner tube 17B. Further, the pipe 11 is pushed through the inner pipe 17B, led to the outdoors, and connected to a negative pressure suction type drainage device 13A installed outdoors. With this configuration, when the second piping path 16 is newly provided, there is no need to separately drill the through hole 17 in the outer wall or the foundation 20 itself. In addition, as for the piping 11 penetrated in the inner tube | pipe 17B, it is desirable that it is a flexible tube. Further, it is desirable that a hole formed for inserting the pipe 11 into the inner pipe 17B is filled and sealed with a filler or the like in order to prevent the drainage from leaking outside. Further, as the insertion hole 18 formed in the floor portion, an already opened hole may be used.

[Example 5]
The drain pipe structure 1E of Example 5 will be described with reference to FIGS. In addition, while the same code | symbol is attached | subjected to the structure similar to Examples 1-4, description is simplified or abbreviate | omitted.

  As shown in FIG. 8, in the drain pipe piping structure 1 </ b> E, a pressure-feed type drainage device 13 </ b> B is built in the portable toilet 4. A forced flow down section 12 is set on the downstream side of the drainage device 13B according to the drainage capability (pumping capability) of the pumping drainage device 13B. The pipe 11 constituting the forced flow down section 12 is a bellows-like flexible pipe connected to the discharge port of the drainage device 13B, and the inner diameter of the pipe 11 is 20 mm. The inner diameter of the pipe 11 may be 20 mm or less. In the present embodiment, the total amount of drainage of the portable toilet 4 is about 4.3 liters. The portable toilet 4 in which the pressure-feed type drainage device 13B is built can suitably adopt a known configuration. However, the pressure-feed type drainage device 13B does not need to be built in the portable toilet 4, and may be separate from each other.

  Further, as shown in FIG. 9, a lift-up portion 70 is provided at the downstream end portion of the forced flow down section 12. More specifically, the lift-up portion 70 has a pipe portion extending upward as it goes in the downstream direction, and its downstream end is connected to the upstream end of the natural flow section 15. . In this embodiment, the height difference H between the tube bottom at the lowermost end of the pipe 11 constituting the forced flow down section 12 and the tube bottom at the downstream end of the lift-up portion 70 is 30 cm. The total length of the forced flow down section 12 is set to 2 m according to the pumping capacity of the drainage device 13B.

  In such a configuration, the excrement from the portable toilet 4 is pushed out downstream by the drainage device 13B. Here, when passing through the lift-up portion 70 of the forced flow down section 12, it is lifted from the floor to the required height, and then naturally flows down the natural flow down section 15 and introduced into the first piping path 10. Thus, by providing the lift-up part 70 and arranging the upstream end of the natural flow section 15 as far as possible, the total length of the natural flow section 15 can be increased even if the drainage capacity of the drainage device 13B is limited. While ensuring enough, the drainage gradient of the piping 14 in this natural flow-down area 15 can be provided appropriately, and excrement can flow down appropriately.

The drain pipe structures 1A to 1E are not limited to the above example, and can be appropriately changed in design.
For example, it is possible to construct a piping route by appropriately combining the configurations of Examples 1 to 5. In addition, the arrangement of sanitary instruments in the building 2 varies depending on the individual building 2 and can be selected as appropriate. Moreover, in Examples 1-4, although the drainage device 13A is installed outdoors, it may naturally be installed indoors. In this case, the pipe inserted through the through hole 17 becomes the pipe 14 constituting the natural flow section 15. In Examples 1 to 3 and 5, as the through hole 17, for example, a through hole of an existing air-conditioner duct may be used. As shown in FIG. 10, when connecting the pipe 14 in the natural flow section 15 and the drain 30 (40), the lid 31 having the socket-type receiving part 32 in which the through hole is formed is connected to the pipe 31. You may make it connect a downstream edge part.

1A to 1E Drainage pipe structure 2 Building 3 Flush toilet 4 Portable toilet 5 Public basin 10 First piping path 11 Pipe 12 Forced flow section 13A, 13B Drainage device 14 Pipe 15 Natural flow section 16 Second pipe path 17 Through hole 30, 40 Drainage 70 Lift-up part

Claims (7)

A flush toilet and portable toilet installed indoors, and a drainage pipe structure having a drainage basin and a public basin arranged outdoors,
The drain pipe structure is
A first urinal including the flush toilet and a pipe having an upstream end connected to the flush toilet and a drain end connected to the public basin via the drainage basin. Piping route,
A second piping path including the portable toilet and a pipe having an upstream end connected to the portable toilet and a downstream end connected to the first piping path;
A drainage device disposed in the second piping path and forcibly flowing down the waste collected in the portable toilet,
The second piping path includes a forced flow-down section in which excrement is forced to flow down by the drainage device, and a natural flow-down section in which excrement flows down naturally from the forced flow-down section toward the first pipe path. , And
The pipe constituting the natural flow section has a predetermined drainage gradient,
The drainage device is a pumping type device that pumps excreta by pressurization via a pipe constituting the forced flow down section,
Furthermore, a lift-up portion is provided at the downstream end of the second piping path corresponding to the forced flow down section,
The lift-up part has a pipe extending upward as it goes in the downstream direction where excrement is sent, and the downstream end of the lift-up part is connected to the upstream end of the natural flow section. Drainage pipe structure characterized by having 2. The drain pipe structure according to claim 1, wherein a downstream end of the second piping path is connected to the drain pipe. The drain pipe structure according to claim 1 or 2, wherein a slope of the pipe constituting the natural flow section is 1/50 or more. The drain pipe structure according to any one of claims 1 to 3, wherein an inner diameter of a pipe constituting the natural flow section is larger than an inner diameter of a pipe constituting the forced flow section. The drain pipe structure according to any one of claims 1 to 4, wherein an inner diameter of the pipe constituting the natural flow section is 50 mm or more. The drain pipe structure according to any one of claims 1 to 5, wherein an inner diameter of a pipe constituting the forced flow down section is 20 mm or less. The height difference of 30 cm or more is provided between the pipe bottom in the downstream end part of the lift-up part and the pipe bottom in the lowest end part among the pipes constituting the forced flow down section. The drain pipe structure according to claim 6.

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