JP4390565B2 - Drainage adapter and drainage structure - Google Patents

Description

The present invention relates to a drainage adapter and a drainage structure that constitute a drainage joint used in a siphon drainage system.

  In a general residential drainage system, wastewater discharged from sinks such as sinks, toilets, unit baths, basins, etc. passes through the drainage pipes connected to each drainage device to the ground around the building. It is transported and flows into the site drainage pipe through a drainage basin that is buried around the building. And depending on the case, it is discharged outside the premises, such as public sewers, through the septic tank.

  In addition, an appliance drain pipe means here a pipe | tube until it joins to another drain pipe from the trap of a drain appliance.

  The above-mentioned drainage basin is intended for maintenance of drainage pipes, and has a structure in which one drainage pipe is connected to one drainage basin except for a specially shaped drainage basin. Therefore, from the aspect of maintenance, it is desirable that one drainage basin corresponds to one drainage device, and the number thereof is the same.

  However, in reality, the equipment drain pipes are joined by a joint joint that does not have a maintenance function in order to reduce the space occupied by the equipment drain pipes indoors and the drains outside, and to reduce costs. There are many things. For example, in an apartment house, there are 3 to 5 drainage devices per dwelling unit. Therefore, a large number of drainage basins will be arranged around the building unless they meet. Also, even in detached houses, for example, the drainage of a vanity and the drainage of a nearby washing machine are merged indoors and connected to a drainage basin as a single indoor drainage pipe. Often to do. In other words, the current situation is that priority is given to the reduction of drainage basins over maintainability.

  In order to solve the above problems, a technique represented by Japanese Patent Laid-Open No. 2002-276018 (Patent Document 1) has been proposed in recent years. This is a so-called drainage header, and has a function of collecting the drainage of a plurality of instrument drainage pipes into one, and a function of cleaning / inspecting the inside. Therefore, if the drainage header is installed under the floor of the sanitary zone where drainage equipment is concentrated, and the equipment drainage pipes are connected to the drainage headers respectively, it is possible to merge without impairing the maintenance function and the number of drainage basins on the site Can be reduced.

  On the other hand, as disclosed in Japanese Patent Laid-Open No. 6-42019 (Patent Document 2), a siphon-type drainage system that sucks and conveys subsequent drainage by using the principle of siphon and causing the inside of the drainage pipe to flow down in a substantially full state is known. It has been. This drainage system basically cannot join from the drainage port of the drainage device to the lower part of the substantially vertical pipe that exhibits the siphon action. This is because the siphon action cannot be continued because the air is sucked from the drainage device that is not draining if it joins. However, the instrument drain pipe can be made smaller than 15mm to 25mm, and the drainage gradient is flexible. Therefore, the piping route can be freely selected, and even if the number of pipes is not reduced due to merging, the design and construction is easier than in the conventional drainage system indoors.

  However, when connecting the drainage pipe of the siphon drainage system to the drainage standpipe, there is a means as disclosed in Japanese Patent Laid-Open No. 2000-297447 (Patent Document 3), but the site drainage pipe is not connected to the standpipe. When connecting to, there were no proper proposals made. By the way, the following problems occur when the currently disclosed means are used.

  First, if each appliance drain pipe is connected to a drainage basin without joining, the same number of drainage basins as the drainage basin will be arranged on the site. In this case, there are not only the same problems as the conventional drainage system described above, but also the labor and cost of attaching a different diameter joint to each appliance drain pipe. This is because the drainage basins currently available on the market have a nominal diameter of 125 mm, 100 mm, 75 mm, or 50 mm, and a small diameter pipe (nominal diameter 15 mm to 25 mm) that is used in a siphon drainage system as it is. This is because it cannot be connected to the drain.

  In the siphon drainage system, there is no problem in drainage performance even if the instrument drain pipes join together if they are downstream of the substantially vertical pipe that exhibits the siphon action of the instrument drain pipe. However, if a confluence joint without a maintenance function is used for this confluence, the number of drainage tubs can be reduced, but the ease of maintenance is reduced as in the case of conventional drainage systems. In addition, the siphon drainage system is based on the premise that each instrument drain pipe flows at almost full flow, and the pipe diameter after joining is necessarily thicker than the instrument drain pipe. This requires a joint with a different diameter for each appliance drain pipe, and the construction becomes complicated.

  Some drainage headers, as disclosed in Japanese Patent Application Laid-Open No. 2002-106011 (Patent Document 4), have a small-diameter instrument drain pipe to be connected and do not require a joint with a different diameter. However, since the structure of the drainage header is complicated, the manufacturing cost is high, and even if the drainage header is used to join the drainage header, there is still a problem that a drainage basin is still required for the part that finally connects to the site drainage pipe. there were.

JP 2002-276018 A JP-A-6-42019 JP 2000-297447 A JP 2002-106011 A

The present invention solves the above-mentioned problems, and the object of the present invention is to connect a plurality of small-diameter appliance drain pipes to a single drainage basin in a siphon drainage system, and further facilitate maintenance and low manufacturing costs. It is intended to provide a drainage adapter and drainage structure .

The first configuration of the drainage adapter according to the present invention for achieving the above object is inserted into a drainage pipe receiving port connected directly under or near the inspection port of the drainage basin, and has a plurality of diameters smaller than the drainage pipe receiving port. A drainage adapter for connecting a device drainage pipe to the drainage basin, the cylinder part having the same outer diameter as the inner diameter of the drainage pipe receiving port and having at least one end accommodated in the drainage pipe receiving port, and the columnar part A plurality of drain outlets provided penetrating and a plurality of drain inlets provided on the other end side of the cylindrical portion and connected to the drainage device pipe, and each drain inlet is paired with the drain outlet. It is connected with one correspondence .

Further, according to a second configuration of the drainage adapter according to the present invention, the cylindrical portion is formed to have the same outer diameter as a rigid polyvinyl chloride pipe defined by JIS-K6741 having a nominal diameter of 125 mm or less and can be fitted into the drainage pipe receiving port. It is said that it is said.

Nominal diameter of the cylindrical portion and 125mm or less, a nominal diameter 125mm, 100 mm, 75 mm, 50 mm, or the like. Further, the drainage inlet shape, Ri shape der shapes or instrument drainage pipe joint of the instrument drain pipe, drainage inlet itself Ru equivalent structures der and joint fitting for the instrument drain or appliance drain pipe.

  Since the drainage adapter according to the present invention is configured as described above, the drainage basin is exactly the same as the rigid polyvinyl chloride pipe defined by JIS-K6741 whose nominal diameters are 125 mm, 100 mm, 75 mm, and 50 mm, which are frequently used as drainage pipes. It can be fitted and bonded. And since the confluence | merging part in which a foreign material tends to stagnate becomes inside a drainage tub, the removal is very easy from the inspection port of a drainage basin. Further, the drain outlet has a one-to-one correspondence with the instrument drain pipe connected to the drain inlet, and the drain outlet is at a position that can be reached from the inspection port of the drain. It is easy to insert into the instrument drain pipe. Since there is no branching or merging from the drain outlet of the drainage adapter to the drainage outlet of the drainage device, all the pipelines can be cleaned by inserting a wire-type cleaning tool. The drainage adapter may not be directly connected to the drainage basin, but may be connected to the drainage basin through a short pipe having a length that does not hinder maintenance.

A third configuration of the drainage adapter according to the present invention is characterized in that a pair of the plurality of drainage outlets and the drainage inlets is used for ventilation.

  According to the above configuration, when the drainage flows from the drainage device to the appliance drainage pipe, the air in the pipe can be released to the atmosphere from the pipe that is used for ventilation via the drainage basin, so drainage starts smoothly. Is done. Further, since the air mixed with the drainage and carried to the drainage can also be released to the atmosphere, the inside of the drainage can be kept at almost atmospheric pressure, and there is no possibility of backflowing the sealing water of other drainage devices.

A fourth configuration of the drainage adapter according to the present invention is characterized in that the drainage outlet is provided near an upper side of a perfect circle constituting the one end portion when viewed from one end portion side of the cylindrical portion. And

  According to the above configuration, when the drainage adapter is fitted and adhered to the drainage basin, the drainage outlet can be positioned upward. Thereby, even if the water level in the drainage basin rises, it does not flow backward to the drainage outlet. Moreover, since the flow of the waste water coming out from the drain outlet is not obstructed, good drainage performance is maintained.

Fifth configuration of the drainage adapter according to the present invention, one end of the cylindrical portion, the drainage guide having an arcuate surface to pivot the waste water from the drainage outlet provided in the drainage outlet in the drainage桝内 is and it is provided.

  According to the above configuration, when fitting and bonding to a drop rod in which drainage falls vertically inside, the traveling direction of all drainage flowing out from the drainage adapter can be guided rightward or leftward. When drainage flows in and falls down a vertical pipeline, the surrounding air is also drawn by the drainage and moves downward, so the top of the vertical pipeline is negative and the bottom is positive. Although it is known to cause various troubles, with the above configuration, the drainage falls while turning along the inner wall of the drop dredge, so even if it is discharged from many drain outlets at the same time, The upper and lower air are connected to each other, and the pressure fluctuation in the bag can be reduced.

The sixth configuration of the drainage adapter according to the present invention is characterized in that the spacing between the plurality of drainage inlets is arranged at least at an interval equal to or larger than the diameter of the drainage inlet.

  According to the said structure, even if many instrument drain pipes gather, there is no trouble in a connection operation.

A seventh configuration of the drainage adapter according to the present invention is characterized in that the drainage inlet is oriented in a direction having an angle of 90 degrees or less with respect to a plane formed by a perfect circle at one end of the cylindrical portion .

  According to the said structure, the instrument drain pipe of the position a little away from the drainage adapter can also be connected without difficulty.

An eighth configuration of the drainage adapter according to the present invention is characterized in that at least a part of a pipe line between the drainage outlet and the drainage inlet is a flexible pipe.

  According to the above configuration, the drainage inlet can be freely directed toward the instrument drainage pipe, and the connection work is facilitated.

A ninth configuration of the drainage adapter according to the present invention is characterized by having a drain plug that can close the drain outlet.

  According to the said structure, the waste water outlet which is not used is easily plugged, and the foreign material contained in waste water prevents entering the waste water outlet which is not used. Furthermore, it prevents sediment and small animals from entering the drainage pipe.

The drainage structure according to the present invention is formed with a drainage basin provided with an inspection port and a drainage pipe receiving port connected directly under or near the inspection port, and connected to the drainage tube receiving port and having a smaller diameter than the drainage tube receiving port. A drainage adapter that is connected to a plurality of appliance drainage pipes and that drains water from each appliance drainage pipe to the drainage basin, and the drainage adapter has at least the same outer diameter as the inner diameter of the drainage pipe receptacle. A cylindrical portion in which one end portion is accommodated in the drain pipe receptacle, a plurality of drain outlets provided through the cylindrical portion, and a plurality provided on one end side of the cylindrical portion and connected to the drainage device pipe The drainage inlets are connected in a one-to-one correspondence with the drainage outlets .

  In the siphon drainage system, the drainage adapter according to the present invention has a simple configuration and is inexpensive to manufacture, and has the above-described effects. Therefore, the drainage adapter is widely spread and cheaper than the drainage header. The drain pipe can be connected without impairing maintainability and drainage performance. Therefore, cost saving and space saving are achieved.

  An embodiment of a drainage adapter according to the present invention will be specifically described with reference to the drawings.

  FIG. 1 is a perspective view showing a part of a residential drainage pipe of an apartment house using a drainage adapter having a first configuration according to the present invention, wherein 1 is a site drainage pipe, 2 is a drainage pipe, 5 is a drainage pipe 2 It is a drain pipe outlet provided. A drainage adapter 6 according to the present invention shown in FIG. 3 is connected to the drainage pipe receptacle 5 by fitting as shown in FIG. 2, and various drainage devices (not shown) such as eaves traps and rainwater drainage grooves are drained. A plurality of small-diameter instrument drain pipes 7 connected to the equipment are included.

  With this configuration, the confluence portion of the device drainage that is likely to be clogged is inside the drainage basin 2, and can be easily cleaned by removing the lid of the inspection port 2a of the drainage basin 2. Further, if the hand is extended from the inspection port 2a of the drainage basin 2, the tip of the wire type cleaning tool can be inserted into each drainage outlet 6d of the drainage adapter 6, so that there is a problem even when the appliance drainage pipe 7 is cleaned. Absent. Therefore, it is possible to join a lot of appliance drain pipes 7 to the site drain pipe 1 with a small number of drains 2 while maintaining a good maintenance function.

  In addition, even if the drainage adapter 6 is connected to the drainage basin 2 through a short pipe 4 that does not hinder cleaning as shown in the center of FIG. 1, the function described above is not impaired.

  Here, the joining method of each component is demonstrated. Since the cylindrical portion 6a of the drainage adapter 6 has a diameter that can be fitted into the drainage pipe receiving port 5 provided in the drainage basin 2, the nominal diameters frequently used as drainage pipes are 125 mm, 100 mm, 75 mm, It can be fitted and adhered to the drainage basin 2 in exactly the same way as a 50 mm JIS-K6741 rigid polyvinyl chloride pipe.

  In addition, the drainage inlet 6 c in the shape of the joint for the appliance drain pipe is an optimum joint for the pipe material used as the instrument drain pipe 7. For example, if the appliance drain pipe 7 is a rigid polyvinyl chloride pipe defined by JIS-K6741, the drainage inlet 6c in the shape of the joint for the instrument drain pipe is a joint (so-called DV joint) defined by JIS-K6739, or defined by JIS-K6743. It is a joint (so-called TS joint) or a joint (so-called VU joint) defined by the vinyl chloride joint joint standard AS38. Alternatively, if the instrument drain pipe 7 is a cross-linked polyethylene pipe defined by JIS-K6769, the drainage inlet 6c in the shape of the joint for the instrument drain pipe is a mechanical joint or an electric fusion joint defined by JIS-K6769.

  Furthermore, the shape of the drainage inlet of the drainage adapter 6 may be the shape of a small-diameter instrument drainage pipe as shown in FIG. In this case, since the joint 15 corresponding to the drainage inlet 6b in the shape of the appliance drain pipe can be directly connected, the direction of the appliance drain pipe 7 can be changed in the immediate vicinity of the drainage adapter 6 or the drainage in the form of the appliance drain pipe. This is suitable for adjusting the position of the joint 15 by appropriately shortening the length of the inlet 6b within a range that does not hinder the connection of the joint 15.

  In the following examples, the drainage inlet of the drainage adapter 6 will be described as a drainage inlet 6c having a joint drainage pipe shape, but this part may be the drainage inlet 6b having the above-described instrument drainage pipe shape. Needless to say.

  2 and 3, 5a is an inner wall surface of the drain pipe receptacle 5, 5b is a stopper for restricting the fitting position of the cylindrical portion 6a of the drain adapter 6 fitted into the inner wall surface 5a, and 6c1 is a joint part for an instrument drain pipe. An inner wall surface 6c2 of the drainage inlet 6c having a shape is a stopper for restricting the fitting position of the instrument drain pipe 7 to be fitted into the inner wall surface 6c1.

  FIG. 5 shows an embodiment of the second configuration of the drainage adapter according to the present invention. Of the pair of the drainage inlets 6c having a plurality of drainage outlets 6d and the drainage inlet joint shape for appliance drainage pipes, one pair is the vent pipe 12. The other pair is connected to the drainage pipe 7 of the drainage apparatus 13. Such a configuration ensures a smooth flow of drainage from the drainage device 13 even when the air permeability of the pipeline is insufficient.

  The state where the air permeability of the pipe line is insufficient is, for example, the state where the upstream side of the equipment drain pipe 7 loses the air permeability due to the equipment trap 7a, and also the ground drain pipe 1 downstream of the drainage basin 2 for some reason. This refers to the state where the air present in the drainage pipe cannot move easily, such as when it is full.

  Insufficient air permeability of the pipe line is a cause of drainage failure, which is not preferable, but in a general residential drainage system, the pipe diameter is sufficiently large, so the drainage 8 flowing from the drainage device 13 and There is room for the air 14 in the pipeline to be replaced, and even though drainage noise and drainage time are required, it is unlikely that the drainage cannot be performed.

  On the other hand, the siphon drainage system to which the present invention is applied uses a small-diameter pipe that is difficult to replace the drainage 8 and the air 14, and the air 14 in the small-diameter pipe is pushed by the drainage 8 and moves downstream. Is started. Therefore, when the air permeability of the pipe line is insufficient, the air 14 with no escape space continues to remain in the instrument drain pipe 7 which is a small diameter pipe, so that the drainage 8 cannot enter the instrument drain pipe 7 and is almost drained. An impossible situation occurs.

  However, according to the second configuration of the drainage adapter according to the present invention, when the drainage 8 flows from the drainage device 13 to the device drainage pipe 7, the air 14 in the device drainage pipe 7 is passed through the drainage tub 2. Since the air can be released from the vent pipe 12 to the atmosphere, drainage can be started smoothly. Furthermore, since the air 14 mixed with the drainage 8 and carried to the drainage basin 2 can be similarly released to the atmosphere from the vent pipe 12, the inside of the drainage basin 2 is maintained at almost atmospheric pressure, and other drainage equipment is sealed. There is no fear of water flowing back.

  Moreover, the 2nd structure of the drainage adapter concerning this invention is effective also when draining rainwater with a siphon type drainage system and making this join with miscellaneous drainage. This will be described with reference to FIG.

  At the junction of rainwater and miscellaneous drainage, a water-sealed trap 18 is provided so that the malodor of miscellaneous drainage is not diffused to the rooftop or veranda via rainwater drainage pipes such as firewood. Accordingly, the drainage basin 2 is in a state of insufficient ventilation on the primary side of the water seal trap 18.

  That is, when the siphon drainage system is applied to rainwater drainage, the eaves 13a and the rainwater drainage ditch are drainage devices, but when it rains, a large amount of air 14 along with rainwater from all the device drainage pipes 7 is a water trap. Carried to the primary side of 18. Since this air 14 cannot dive through the water-sealed trap 18 and move downstream, it can increase the pressure in the pipe on the primary side of the trap and hinder rain water from flowing down the instrument drain pipe 7. However, this problem is solved if the air 14 is allowed to escape from the vent pipe 12 to the atmosphere by the second configuration of the drainage adapter according to the present invention.

  FIG. 7 is an example of the third configuration of the drainage adapter according to the present invention. Thereby, even when the water level of the water surface 8a of the drainage 8 rises inside the drainage basin 2, the drainage 8 does not flow back to the drainage outlet 6d, which is sanitary. Further, since the drain outlet 6d is not blocked, the drainage 8 from the appliance drain pipe 7 is smoothly drained into the drainage basin 2.

  FIGS. 8A and 8B are examples of the fourth configuration of the drainage adapter according to the present invention. All the drainage 8 flowing into the drop rod 17 that guides the drainage 8 directly flows down while turning left along the inner wall of the drop rod 17 by a drainage guide 16 having an arc surface provided at the tip of the drainage outlet 6d. To do. Unlike the case where the drainage 8 falls as it is, the air passage 14a is secured in the vicinity of the center of the drop rod 17, so that the pressure difference between the upper and lower sides is reduced, and a drainage failure caused by pressure fluctuation can be avoided.

  Note that the drainage adapter 6 according to the present invention is effective in cases where the drainage 8 falls vertically immediately after merging, other than the drop rod 17 as described above, for example, when connecting rainwater drainage to a trap rod. The drainage adapter 6 may be connected to a DT joint attached to the trap.

  FIG. 9 shows an embodiment of the fifth configuration of the drainage adapter according to the present invention. In this embodiment, the interval between the drainage inlets 6c in the shape of the joints for appliance drainage pipes, which serve as the drainage inlets of the drainage adapter 6, is arranged in a horizontal row at intervals greater than the outer diameter of the drainage inlets 6c in the shape of the junctions for appliance drainage pipes. Has been. Thereby, the connection operation | work of the drainage inlet 6c of the junction shape for instrument drainage pipes and the instrument drainage pipe 7 becomes easy.

  10 (a) and 10 (b) show an embodiment of the sixth configuration of the drainage adapter according to the present invention. The drainage inlet 6c in the shape of the joint drainage pipe for the drainage inlet is connected to the end of the drainage adapter 6. It is oriented in a direction having an angle of about 75 degrees with respect to the plane formed by the circle. And the drainage inlet 6c of the shape of the joint part for appliance drainage pipes has one-to-one correspondence with the drainage outlet 6d opened inside the drainage basin 2 by the curved communication part 6e.

  With such a configuration, when the position of the appliance drain pipe 7 coming out of the building is not just beside the drainage basin 2 but at a position slightly apart, the drainage inlet 6c of the drainage adapter 6 in the shape of the joint for the appliance drainage pipe is used. By orienting in that direction, the appliance drain pipe 7 can be connected without excessive bending.

  FIG. 11 is an embodiment of the seventh configuration of the drainage adapter according to the present invention, and a flexible pipe is provided between the drainage outlet 6d and the drainage inlet 6c in the shape of the joint drainage pipe drainage inlet. Is. The length of the flexible pipe is about 10 times the diameter of the instrument drain pipe 7. With this configuration, the instrument drain pipe 7 in any direction can be connected freely. Since the distance between the drainage inlets 6c in the shape of the joints for appliance drainage pipes is also variable, the distance between the drainage inlets 6c in the shape of the joints for instrument drainage pipes is greatly increased during connection work, and after the connection is completed It is also possible to bundle the drainage inlet 6c in the shape of the joint for the appliance drainage pipe so as to save space.

  FIGS. 12A to 12C show an eighth embodiment of the drainage adapter according to the present invention. The drainage outlet 6d that is not used can be closed, and when used, it can be pushed out and removed with a rod-like one. It is a figure explaining a drain plug.

  The drain plug 9a in FIG. 12 (a) is a drain plug that can be closed from the drain outlet 6d side by fitting it into the through hole of the drain outlet 6d, and prevents leakage from the drain outlet 6d that is not used. It prevents the dirt inside from accumulating at the drain outlet 6d. 12 (b) and 12 (c) has a shape capable of closing the entire drainage inlet 6c from the drainage inlet 6c side of the joint drainage pipe shape as a drainage inlet to the drainage outlet 6d. In addition to the function of 9a, it prevents dirt from adhering to the drainage inlet 6c in the shape of the joint for the appliance drainage pipe.

As an example of utilization of this invention, it can utilize for the drainage adapter and drainage structure which are attached to the drain pipe receptacle of the drainage in a building drainage system.

It is a perspective view which shows a part of residential drainage pipe using the drainage adapter which concerns on this invention. It is a disassembled perspective view of the drain pipe receptacle provided in a drain, a drain adapter of the 1st composition, and an instrument drain pipe. It is a disassembled perspective view and sectional drawing of the drainage adapter of a 1st structure, a coupling, and an instrument drainage pipe. It is a figure which shows the other structure of the drainage adapter of a 1st structure. It is a figure explaining the drainage adapter of a 2nd structure, a drainage instrument, a vent pipe, and the movement path | route of air. It is a figure explaining the movement path | route of a ventilation pipe and air at the time of connecting an eaves wall as a drainage adapter of a 2nd structure, and a drainage instrument. It is a figure which shows the Example of the drainage adapter of the 3rd structure which concerns on this invention. It is a figure which shows the Example of the drainage adapter of the 4th structure concerning this invention. It is a figure which shows the Example of the drainage adapter of the 5th structure which concerns on this invention. It is a figure which shows the connection relation of the Example of the 6th drainage adapter which concerns on this invention, and an instrument drainage pipe. It is a figure which shows the Example of the drainage adapter of the 7th structure which concerns on this invention. It is a figure which shows the Example of the drainage adapter of the 8th structure which concerns on this invention.

DESCRIPTION OF SYMBOLS 1 ... Site drainage pipe 2 ... Drainage tank 2a ... Inspection port 4 ... Short pipe 5 ... Drainage pipe receiving port 5a ... Inner wall surface 5b ... Stopper 6 ... Drainage adapter 6a ... Cylindrical part 6b ... Drainage pipe-shaped drainage 6c ... Drainage Drainage inlet with pipe joint shape
6c1… Inner wall surface
6c2 ... stopper 6d ... drain outlet 6e ... communication part 7 ... equipment drain pipe 7a ... equipment trap 8 ... drainage 8a ... water surface 9a, 9b ... drain plug
12 ... Vent pipe
13 ... Drainage device
13a ... eaves
14 ... Air
14a ... Airway
15 ... Fitting
16… Drainage guide
17 ... Drop 桝
18 ... Water trap of trap trap

Claims (10)

A drainage adapter that is inserted into a drainage pipe receiving port connected directly under or near the inspection port of the drainage pipe and connects a plurality of appliance drainage pipes having a smaller diameter than the drainage pipe receiving port to the drainage pipe ,
A cylindrical part having the same outer diameter as the inner diameter of the drain pipe receptacle and having at least one end accommodated in the drain pipe receptacle ;
A plurality of drain outlets provided through the cylindrical portion ;
A plurality of drainage inlets provided on the other end side of the cylindrical part and connected to the drainage device pipe ;
With
The drainage adapter is characterized in that each drainage inlet is connected to the drainage outlet in a one-to-one correspondence . The said cylindrical part is formed in the same outer diameter as the hard polyvinyl chloride pipe | tube defined by JIS-K6741 whose nominal diameter is 125 mm or less, and can be inserted in the said drain pipe receptacle . Drainage adapter. The drainage adapter according to claim 1, wherein a pair of the plurality of drainage outlets and the drainage inlets is used for ventilation. 2. The drainage adapter according to claim 1, wherein the drainage outlet is provided near an upper side of a perfect circle constituting the one end when viewed from one end of the cylindrical portion . At one end of the cylindrical portion, to claim 1, characterized in that the drain guide having an arcuate surface to pivot provided on the drainage outlet of the waste water from the waste water outlet in the drainage桝内 is provided Drainage adapter as described. 2. The drainage adapter according to claim 1, wherein the spacing between the plurality of drainage inlets is arranged at least as large as the diameter of the drainage inlet. The drainage adapter according to claim 1, wherein the drainage inlet is oriented in a direction having an angle of 90 degrees or less with respect to a plane formed by a perfect circle at one end of the cylindrical portion . The drainage adapter according to claim 1, wherein at least a part of a pipe line between the drainage outlet and the drainage inlet is a flexible pipe. The drainage adapter according to claim 1, further comprising a drainage plug that can be fitted and closed at the drainage outlet. A drainage basin comprising an inspection port and a drain pipe receiving port connected directly under or near the inspection port ;
A drainage adapter that is connected to the drainage pipe receptacle and connected to a plurality of appliance drainage pipes that have a smaller diameter than the drainage pipe receptacle, and allows drainage from each appliance drainage pipe to flow into the drainage basin ,
With
The drainage adapter is
A cylindrical part having the same outer diameter as the inner diameter of the drain pipe receptacle and having at least one end accommodated in the drain pipe receptacle ;
A plurality of drain outlets provided through the cylindrical portion ;
A plurality of drainage inlets provided on one end side of the cylindrical part and connected to the drainage device pipe ;
With
Each drainage inlet is connected to the drainage outlet in a one-to-one correspondence .

Images