KR101257511B1 - Collective drainage apparatus - Google Patents

Abstract

Provide collective drainage for easy maintenance.

The collective drainage apparatus 1 is provided with the drainage main body 5 comprised as the some main body unit 6,7,8. The outflow side unit 51 is connected to the downstream end side of the drainage main body 5, and the outflow pipe is connected to the outflow side unit 51. FIG. The rising pipe 9 is connected to the maintenance opening 41 selected from the plurality of maintenance openings 21 and 41, and the opening / closing lid which is located on the substantially same surface as the floor surface part at the upper end of the rising pipe 9 is provided. Install. The lid 10 is installed in the remaining maintenance openings 21 and 41.

Description

Collective Drainage {COLLECTIVE DRAINAGE APPARATUS}

1 is a perspective view showing one embodiment of the collective drainage apparatus of the present invention.

2 is a front view of the collective drainage device.

3 is a plan view of the collective drainage device.

4 is a cross-sectional view taken along line IV-IV of FIG. 3.

5 is a cross-sectional view taken along line V-V of FIG. 2.

6 is a cross-sectional view taken along line VI-VI of FIG. 2.

7 is a partial longitudinal cross-sectional view of the collective drainage device.

Fig. 8 is a plan view showing a main body unit and a closing cap of another embodiment of the collective drainage apparatus of the present invention.

9 is a plan view during installation of the closure cap to the main unit.

Fig. 10 is a partial plan view of the closure cap during installation to the main unit.

Fig. 11 is a partial plan view of the closure cap after installation in the main unit.

12 is a plan view showing a main body unit and a closure cap according to still another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

1: collective drainage 3: floor surface portion

5: drainage main body 6: main body unit which is a main body unit

7: second main body unit which is a main body unit 8: third main body unit which is a main body unit

9: ascending tube 9a: upper opening surface

10: lid 21, 41: opening for maintenance

22, 42: fitting portion 23, 43: cap screw binding portion

26, 46: branch pipe connection portion 28: closure cap

29: inner end section 51: the outflow side unit

56: opening and closing lid 61: positioning receiving portion for positioning

62: fastening portion for preventing installation mistake

63: positioning fastening part 64: mounting mistake preventing part

81: fall prevention engagement part 82: fall prevention engagement part

[Patent Document 1] Japanese Patent Laid-Open No. 2002-106009

The present invention relates to a collective drainage device which is easy to perform maintenance work such as inspection and cleaning.

Conventionally, the branch pipe connection part formed in the side part of the drainage main body arrange | positioned under a floor, for example, is connected to the drain pipe from the facilities of the place which uses several waters, such as a kitchen, a bathroom, and a toilet, and is connected to the upper part of a drainage main body. A collective drainage device provided with a lid is known for the formed cleaning port portion (see Patent Document 1, for example).

However, for example, in the case where the collective drainage system is installed under the floor of an apartment house such as an apartment, when the maintenance work such as inspection and cleaning is performed, the ceiling of the lower floor is torn off or previously installed on the ceiling of the lower floor. The inspection section must be opened, and the lid must be removed from the cleaning port section, which causes a problem such as requiring a great effort for its maintenance work.

This invention is made | formed in view of this point, Comprising: It aims at providing the collective drainage apparatus which is easy to carry out maintenance work, such as an inspection and a cleaning.

The collective drainage apparatus according to the first aspect of the present invention has a drainage main body composed of a plurality of main body units having a maintenance opening portion and a branch pipe connecting portion, and an upstream end side thereof connected to a downstream end side of the drainage apparatus main body, A lower end side is connected to the outlet side unit to which the outlet pipe is connected, and a maintenance opening selected from a plurality of maintenance openings of the drainage main body, and is located on the same surface as the floor surface part and opened and closed at the upper end side. It is provided with the riser in which the opening and closing lid is provided, and the lid provided in the remaining maintenance opening which this riser is not connected to.

The collective drainage apparatus which concerns on 2nd invention WHEREIN: The collective drainage apparatus which concerns on 1st invention WHEREIN: The closure cap provided in the branch pipe connection part which is not used, and this closure cap is the positioning hook formed in the said branch pipe connection part. Positioning engagement portion for engagement with the alignment receiving portion, Installation mistake prevention engagement portion for engagement with the installation mistake prevention engagement portion formed in the branch pipe connection portion, The positioning engagement portion and the position It has an inner end surface portion which is located on approximately the same surface as the inner circumference of the main body unit in the state in which the determination engagement portion is engaged and the installation mistake prevention engagement portion and the installation mistake prevention engagement portion are engaged.

The collective drainage apparatus which concerns on 3rd invention WHEREIN: The collective drainage apparatus which concerns on 1st invention WHEREIN: The closure cap provided in the branch pipe connection part which is not used, and this closure cap is the fall prevention engagement formed in the said branch pipe connection part. And an inner end surface portion which is located on the same surface as the inner circumference of the main unit of the main body unit in a state in which the anti-separation engaging portion that engages with the receiving portion and the anti-seizure engaging portion and the anti-seizure engaging portion are engaged. .

The collective drainage apparatus which concerns on 4th invention is the collective drainage apparatus in any one of 1st invention-3rd invention, WHEREIN: The opening part for maintenance is a pipe fitting part which can fit and connect the lower end side of a rising pipe, It has a lid screw fastening part which can screw a lid.

Embodiment of the Invention

One embodiment of the collective drainage apparatus of this invention is described with reference to drawings.

1 to 7, 1 is a collective drainage apparatus, and the collective drainage apparatus 1 is, for example, a ceiling surface part 2 on the lower floor and a floor surface part in the room in an apartment house such as a mansion which is a building. It is installed between 3), and receives and joins drainage from facilities (not shown) in places where a plurality of water such as kitchens, baths, and toilets are used, and flows into an outlet pipe (not shown).

The collective drainage apparatus 1 is provided with the elongate substantially cylindrical drainage main body 5 mounted on the ceiling surface part 2 of the lower floor of an assembly house. The drainage main body 5 includes a plurality of, for example, three substantially cylindrical main body units in which adjacent ones are fitted and connected, that is, a first main body unit located in a straight line from the upstream side to the downstream side ( 6) and a second main body unit 7 and a third main body unit 8.

The first main body unit 6 is a 45 degree confluence type, has a substantially cylindrical unit main body 11, an upstream end of the unit main body 11 serving as an inlet 12, and a unit main body The wide diameter downstream end of (11) serves as the outlet port 13. The lower portion of the unit body portion 11 is formed in an arc shape corresponding to the outflow pipe, and the upper portion of the unit body portion 11 is formed in an expanded arc shape larger than the outflow tube. It is difficult to generate excessive negative pressure for the facilities where water is used. On the outer circumferential surface side of the inlet portion 11 of the first body unit 6, a downstream end side of the substantially cylindrical inflow side unit 15 is fitted and connected, and the inside of the upstream end side of the inflow side unit 15 is fitted. The cap 16 is provided on the circumferential surface side through the packing 17, and the inflow side unit 15 is closed as the cap 16. The inflow side unit 15 is fitted with a fitting portion 18 fitted on the outer circumferential surface side of the inlet portion 12, and a receiving inlet portion 19 on which the cap 16 is fitted on the inner circumferential surface side. Consists of the contact portion 20 to connect the fitting portion 18 and the receiving inlet (19). In addition, the inner end surface side of the receiving inlet part 19 of the inflow side unit 15 may be connected to the downstream end side of the inflow pipe instead of the cap 16.

In the upper part of the unit main body 11, the substantially cylindrical opening part 21 for maintenance is protruded integrally in a vertical shape. The maintenance opening 21 is integrally formed at the upper end of the substantially cylindrical tube fitting portion 22 and the tube fitting portion 22 which can be fitted to connect the lower end side of the substantially cylindrical rising tube to the inner circumferential surface side. It is provided with the lid screw binding part 23 of the substantially cylindrical shape which is installed in a row and which can be screwed on the inner peripheral surface side. A screw groove 24 is formed in the inner circumferential surface portion of the lid screw engaging portion 23.

And the lid 10 which closes this maintenance opening part 21 is provided in the inner peripheral surface side of the maintenance opening part 21 of the 1st main body unit 6 by screwing. That is, the lid 10 is screwed to the inner circumferential side of the lid screw binding portion 23 of the maintenance opening 21 of the first body unit 6, and the maintenance opening ( 21) is blocked.

On both sides of the unit body portion 11, a pair of substantially cylindrical branch pipe connecting portion 26 protrudes integrally in a state inclined at 45 degrees with respect to the unit body portion 11. In the upper part of the front end of the branch pipe connection part 26, the substantially triangular positioning display part 27 is provided. Moreover, the maintenance opening part 21 protrudes upwards from the position near the base end part of the branch pipe connection part 26 in the unit main body part 11.

And the downstream end side of the branch pipe (not shown) connected to the facility of the place where an upstream end side uses water is fitted to one branch pipe connection part 26 of the 1st main body unit 6, have. In the unused branch pipe connecting portion 26, which is the other branch pipe connecting portion 26 of the first main body unit 6, a closing cap 28 for closing the branch pipe connecting portion 26 is provided with a display portion for positioning. 27) is fitted by fitting through packing (not shown) in a position positioned with respect to 27). The closing cap 28 has a curved inner end surface portion 29 positioned on the substantially same surface as the inner circumferential surface of the unit body portion 11. In the upper part of the outer end of the closure cap 28, the substantially linear positioning display part 30 matching with the substantially triangular positioning display part 27 is provided. Moreover, the leg part 25 which becomes substantially U-shape from the lower part is protruded in two places of the lower part of the unit main-body part 11 integrally.

The second main body unit 7 is of a 90 degree confluence type, has a substantially cylindrical unit main body 31, and an upstream end of the unit main body 31 serves as an inlet 32. A wide diameter downstream end portion 31 is the outlet portion 33, and the inlet portion 32 is fitted to the inner circumferential side of the outlet portion 13 of the first body unit 6. In addition, like the first main body unit 6, the lower part of the unit main body part 31 is formed in an arc shape corresponding to the outflow pipe, and the upper part of the unit main body part 31 is formed in an expanded arc shape larger than the outflow pipe. As a result, it is difficult to form a full pipe flow due to this shape, and excessive negative pressure is unlikely to occur in the facility where water is used.

In the upper part of the unit main-body part 31, the substantially cylindrical maintenance opening 41 protrudes integrally in a vertical shape. The maintenance opening part 41 is integrally connected to the upper end of the substantially cylindrical tube fitting part 42 and the tube fitting part 42 which can fit the lower end side of the riser tube 9 to an inner circumferential surface side. It is comprised by the lid screw binding part 43 of the substantially cylindrical shape which can be installed and screwed on the inner peripheral surface side. A screw groove 44 is formed in the inner circumferential surface portion of the lid screw engaging portion 43.

And the lid 10 which closes this maintenance opening part 41 is provided in the inner peripheral surface side of the maintenance opening part 41 of the 2nd main body unit 7 by screwing. That is, the lid 10 is screwed on the inner circumferential side of the lid screw binding portion 43 of the maintenance opening 41 of the second body unit 7, and the maintenance opening ( 41) is blocked.

On both sides of the unit main body portion 31, a pair of substantially cylindrical branch pipe connecting portion 46 protrudes integrally in a state perpendicular to the unit main body portion 31. An upper triangular positioning display portion 47 is provided above the branch pipe connecting portion 46. Moreover, the maintenance opening part 41 protrudes upwards from the position near the base end part of the branch pipe connection part 46 in the unit main-body part 31. As shown in FIG.

The downstream end side of the branch pipe (not shown) connected to the equipment at the upstream end side of the branch body connecting portion 46 of the second body unit 7 using water is a seam having a different diameter. It is connected via the bushing 40. In the unused branch pipe connecting portion 46, which is the other branch pipe connecting portion 46 of the second main body unit 7, a closing cap 48 for closing the branch pipe connecting portion 46 includes a display portion for positioning. 47) is fitted by fitting through the packing 39 in a position positioned with respect to 47). As shown in FIG. 6, the closing cap 48 has a curved inner end surface portion 49 positioned on the same surface as the inner circumferential surface of the unit body portion 31. In the upper portion of the outer end of the closing cap 48, a substantially linear positioning display portion 50 which is aligned with the substantially triangular positioning display portion 47 is provided. Moreover, the leg part 45 which becomes substantially U-shape from the lower side and protrudes is integrally provided in two places of the lower part of the unit main-body part 31. As shown in FIG.

The third main body unit 8 is of a 90 degree confluence type having the same shape as the second main body unit 7, the unit main body part 31, the inlet part 32, the outlet part 33, and the maintenance It has the opening part 41, the leg part 45, the branch pipe connection part 46, etc.

And the inlet part 32 of the 3rd main body unit 8 is fit-connected to the inner peripheral surface side of the outlet part 33 of the 2nd main body unit 7, and the outlet part of the 3rd main body unit 8 ( The upstream end side of the substantially cylindrical outflow side unit 51 is fitted and connected to the inner periphery side of 33, and the upstream end side of the outflow pipe is connected to the inner periphery side of the downstream end side of this outflow side unit 51. The fitting is connected. The outflow side unit 51 includes a fitting portion 52 fitted to the inner circumferential surface side of the outlet port 33, and a receiving inlet portion 53 on which the upper end side of the outlet pipe is fitted to the inner circumferential surface side. And a contact portion 54 connecting the fitting portion 52 and the receiving inlet portion 53.

Moreover, the lower end side of the riser 9 which has the upper end opening surface 9a which opens toward the inner periphery surface side of the maintenance opening part 41 of the 3rd main body unit 8 is connected. That is, the lower end side of the riser tube 9 is fitted and connected to the inner periphery surface side of the pipe fitting part 42 of the maintenance opening part 41 of the 3rd main body unit 8. As shown in FIG. In addition, for example, the inner circumferential surface of the lower end portion of the cylindrical surface of the rising pipe 9 and the cylindrical surface of the tube fitting portion 42 of the opening 41 for maintenance of the third body unit 8. Adhesive is applied to the surface and adhesively fixed to both sides thereof.

As shown in FIG. 7, on the upper end side of the rising pipe 9 lifted from the third main body unit 8, an opening / closing lid positioned on the same plane as the floor surface portion 3 and opening and closing the upper opening surface 9a ( 56) is installed. The opening / closing lid 56 can be attached to and detached from, for example, the upper end of the rising pipe 9, and the upper surface of the rising pipe 9 is removed by removing the opening and closing lid 56 from the upper end of the rising pipe 9. The opening surface 9a can be opened upward.

In addition, as shown in FIG. 5, the unused branch pipe connection part 46 which is one branch pipe connection part 46 of the 3rd main body unit 8 has the closed cap which blocks this branch pipe connection part 46 ( 48 is provided by fitting through the packing 39 in a state in which it is positioned relative to the positioning display portion 47. The other end of the branch pipe connecting portion 46 of the third main body unit 8 has a bushing whose downstream end side of the branch pipe (not shown) connected to the facility where the upstream end side uses water (not shown) has a different diameter. Connected via 40).

1 and the like, both sides of the fitting portion 18 of the inflow side unit 15, both sides of the outlet portion 13 of the first body unit 6, and the second body unit 7. A pair of fastener mounting protrusions 60 are integrally protruded from both side portions of the outlet portion 33 of the head) and both side portions of the outlet portion 33 of the third body unit 8. The collective drainage device 1 is fixed to the ceiling surface part 2 by the upper end side of the fixture (not shown) provided at the lower surface side of the ceiling surface part 2. have. Moreover, by installing the lower end side of the fastener (not shown) provided in the floor surface part 3 to the fastener installation protrusion part 60, the upper side was suspended with respect to the floor surface part 3. It may be fixed in a state.

Next, the operation and the like of the collective drainage device 1 will be described.

In the case of the assembly work of the collective drainage apparatus 1, for example, the facility in which the water is used in the branch piping connection portions 26 and 46 selected from the plurality of branch pipe connection portions 26 and 46 of the drainage main body 5 is used. The branch pipes from the branch pipes are connected to the unused branch pipe connecting ports 26 and 46 which are not connected to the branch pipes, and the closing caps 28 and 48 are provided. 46).

Further, for example, the lower end of the riser tube 9 is inserted into the maintenance opening 41 of the third body unit 8 selected from the plurality of maintenance openings 21 and 41 of the drainage main body 5. The connecting lid 56 is fitted to the upper end of the rising pipe 9 so that the opening and closing lid 56 is positioned on the same surface as the floor surface part 3 of the room, and on the other hand, the rising pipe 9 The lid 10 is provided in the remaining maintenance openings 21 and 41 which are not connected, and the maintenance openings 21 and 41 are closed as this lid 10. As shown in FIG.

Then, according to the collective drainage device 1, when a problem such as clogging occurs in the interior of the collective drainage device 1 and maintenance work such as inspection and cleaning is necessary, the lid is opened and closed from the room. By removing the 56 from the upper end of the rising pipe 9, the upper opening surface 9a of the rising pipe 9 can be simply opened upward, and thus this opening upper opening surface 9a is opened. Therefore, maintenance work such as inspection and cleaning of the collective drainage device 1 can be easily performed by using a predetermined maintenance mechanism or the like, and furthermore, no trouble is caused to the occupants of the lower floor.

In addition, the tube fitting portions 22 and 42 which allow the maintenance openings 21 and 41 to fit the lower end side of the riser tube 9 and the lid screw binding portions 23 which can screw the lid 10 together, 43, the rising pipe 9 can be easily connected to the pipe fitting portions 22 and 42 of the maintenance openings 21 and 41 selected from the plurality of maintenance openings 21 and 41. In addition, the lid 10 can be easily attached to the lid screw binding portions 23 and 43 of the remaining maintenance openings 21 and 41, so that the assembly work can be easily performed.

In addition, since a plurality of leg portions 25 and 45 are formed at the bottom of the drainage main body 5, the drainage main body 5 can be stably placed on the ceiling surface portion 2. For example, the operation of installing the fastener to the fastener mounting protrusion 60 can be easily performed.

In addition, since the plurality of branch pipe connecting portions 26 and 46 of the drainage main body 5 have the same inner diameter, and the diameter of the branch pipe is smaller than the inner diameter, the bushing 40 is used to reduce the diameter. It is not necessary to manufacture a plurality of types of main body units that differ only in the inner diameter of the branch pipe connecting portion, and manufacturing cost can be reduced.

In addition, as shown in Figs. 8 to 11, the positioning engaging portion 61 and the mounting mistake preventing portion for preventing installation mistakes, respectively, in which the first main body unit 6 is formed on the upper end of the branch pipe connecting portion 26, respectively. A positioning engaging portion 63 and a branch pipe connection portion 26 having a closing cap 28 that the closing cap 28 engages with the positioning engagement portion 61 of the branch connecting portion 26. It is good also as a structure which has the installation mistake prevention engagement part 64 which engages with the installation mistake prevention engagement part 62 of the installation mistake.

As shown in FIG. 10, the positioning engagement part 63 of the closure cap 28 is formed in protrusion shape in the upper part of the outer end of the closure cap 28, and the triangular convex gradually narrowed toward the inner end side. It is comprised as the part 65, and the both sides of the triangular convex part 65 become the guide surface 65a. The mistake prevention engagement portion 64 of the occlusion cap 28 is a square convex portion 66 formed in a protruding shape at both sides of the triangular convex portion 65 at the upper end of the outer end of the occlusion cap 28. ) And a rectangular convex portion 67.

On the other hand, the positioning engagement part 61 of the branch pipe connection part 26 is comprised as the 1st recessed part 71 in which the triangular convex part 65 is inserted, and the installation mistake of the branch pipe connection part 26 is carried out. The prevention engagement part 62 is comprised as the 2nd recessed part 72 in which the square convex part 66 is fitted, and the 3rd recessed part 73 in which the rectangular convex part 67 is fitted. The 1st recessed part 71, the 2nd recessed part 72, and the 3rd recessed part 73 are formed in the upper part of the flange part 26a of the front end of the branch pipe connection part 26, respectively.

Moreover, as is clear from FIG. 8, one branch pipe connecting part 26 and the other branch pipe connecting part 26 are symmetrical, and the other of the blocking cap 28 provided in the one branch pipe connecting part 26 is different. Since the closing cap 28 provided in the branch pipe connecting portion 26 of the branch is different in shape, the other side of the branch pipe connecting portion (when the closing cap 28 having a shape corresponding to one branch pipe connecting portion 26 is misplaced) 26, the inner end surface portion 29 of the closure cap 28 is not located on the same surface as the inner circumference of the unit body portion 11, but rather than the inner circumference of the unit body portion 11. It is in a state where it protrudes inward. Moreover, the closing cap 28 of the shape corresponding to one branch pipe connection part 26 is attached to one branch pipe connection part 26, and the positioning engagement part 63 and the positioning engagement part for positioning are provided. When the 61 is engaged and the installation mistake prevention engagement portion 64 and the attachment error prevention engagement portion 62 are engaged with each other, the inner end surface portion 29 of the closure cap 28 becomes the unit body portion ( It is in a state located on the substantially same surface as the inner circumference of 11).

8 to 11, the closure cap 28 can be easily positioned at an appropriate position with respect to the branch pipe connecting portion 26, and the installation location of the closure cap 28 can be changed. It is possible to prevent accidental discarding, and the inner end surface portion 29 of the closure cap 28 can be located on approximately the same surface as the inner circumferential surface of the unit body portion 11, so that the drainage can flow smoothly.

That is, for example, when the closure cap 28 of the shape corresponding to one branch pipe connection part 26 is going to be installed in the other branch pipe connection part 26, the engagement cap for the installation mistake prevention of the closure cap 28 is carried out. Since the square convex portion 66 of the portion 64 does not penetrate into the third concave portion 73 of the misalignment receiving portion 62 for preventing the installation mistake of the branch pipe connecting portion 26 on the other side, the closed cap 28 ) Cannot be installed, and the installation location of the closing cap 28 is not mistaken. In addition, the occlusion cap 28 is not accidentally attached to the branch pipe connecting portion 46 of the main body units 7 and 8, so that a work mistake during assembly can be prevented.

12 (a), (b) and (c), the first body unit 6 is provided with a fall prevention engagement portion 81 formed at the upper end of the branch pipe connecting portion 26, respectively. And the closure cap 28 engages with the release preventing engagement portion 81 of the branch pipe connection portion 26 to regulate the movement along the axial direction of the branch pipe connection portion 26 of the closure cap 28. It is good also as a structure which has the fall prevention engagement part 82.

The anti-locking engagement portion 82 of the closure cap 28 is formed in a protruding shape on the outer end of the closure cap 28 and forms a substantially U-shaped opening 83 in a circumferential direction. It is configured as. On the other hand, the fall prevention engagement part 81 of the branch pipe connection part 26 is formed in the protrusion shape upper part of the front end of the branch pipe connection part 26, and is in the U-shaped part 83 of the closure cap 28. It is comprised as the protrusion part 84 to be fitted.

In addition, as shown in Fig. 12 (b), the U-shaped portion 83 of the release preventing engaging portion 82 is securely inserted into the inside of the branch pipe connecting portion 26 with the closing cap 28 securely inserted. , Is located on approximately the same surface as the projecting portion 84 of the fall prevention engagement portion 81. As shown in Fig. 12 (c), when the desired amount is rotated in the circumferential direction as shown in Fig. 12 (c), the protruding portion 84 is fitted into the U-shaped portion 83 so as to form a Ko-shaped portion ( 83 and the protrusion 84 engage with each other, so that the closing cap 28 is prevented from falling out with respect to the branch pipe connecting portion 26. The inner end surface portion 29 of the occlusion cap 28 when the U-shaped portion 83 of the fall prevention engagement portion 82 and the protruding portion 84 of the fall prevention engagement portion 81 are engaged with each other. ) Is located on approximately the same surface as the inner circumference of the body unit (6). Therefore, when the closure cap 28 is not plugged in to the inside of the branch pipe connection part 26, the desired amount of the closure cap 28 cannot be rotated. In other words, in the state where the fall prevention engagement portion 82 and the fall prevention engagement portion 81 are engaged with each other, the inner end surface portion 29 of the closure cap 28 is the inner circumference of the body unit 6. Since it is located on the surface substantially the same, the fall prevention engagement part 82 also has a function which prevents the occlusion cap 28 from being installed in incomplete position.

According to this structure, even if the drainage pressure is applied, there is no worry that the closing cap 28 will fall out of the branch pipe connecting portion 26, and the stool of the engaging portion 82 for preventing the closing of the closing cap 28 will be removed. The inner end surface portion 29 of the closure cap 28 is the main body unit in a state where the protrusion portion 84 of the engaging portion 81 for preventing the release of the shape portion 83 and the branch pipe connecting portion 26 is engaged. Since it is located on the same surface as the inner circumference of 6), if the engagement prevention portion 82 and the engagement prevention portion 81 for prevention of engagement is engaged, unevenness occurs in the inner circumference of the drainage main body 5. Therefore, smooth drainage is performed in the drainage main body 5.

In addition, although not shown, the drainage main body 5 may be configured by connecting two or four or more main body units.

Moreover, the structure which provided only one branch pipe connection part to the main body unit, or the structure which provided three or more may be sufficient.

In addition, a rise pipe may be connected to each of two or more maintenance openings selected from a plurality of maintenance openings, or a paper pipe may be connected to all of the plurality of paper pipe connection ports.

According to the invention of Claim 1, since the upper opening surface of the riser which connected the lower end side to the maintenance opening of the drainage main body can be easily opened, maintenance work, such as inspection and cleaning, is easy.

According to the invention of claim 2, not only can the closure cap be easily positioned with respect to the branch pipe connecting portion, but it is possible to prevent a mistake in the installation location of the closure cap. It may be located on approximately the same plane as the circumference.

According to the invention according to claim 3, even if the drainage pressure is applied, there is no worry that the occlusion cap is pulled out from the branch pipe connection part, and the engaging portion for preventing the fall out of the occlusion cap from the branch pipe connection part is engaged. Since the inner end surface of the occlusion cap is located on the same surface as the inner circumferential surface of the main body unit, if the engagement prevention portion and the engagement prevention portion are engaged with each other, the unevenness does not occur on the inner circumference, so that smooth drainage occurs. Lose.

According to the invention according to claim 4, since the maintenance opening has a tube fitting portion that can be fitted to the lower end side of the ascending pipe and a lid screw binding portion that can be screwed onto the lid, the tube fitting of the selected maintenance opening is performed. The riser can be easily connected to the portion, and the lid can be easily attached to the lid screw binding portion of the remaining maintenance opening.

Claims (4)

A drainage main body configured as a plurality of main body units having an opening for maintenance and a branch pipe connection portion; An outflow side unit to which an upstream end side is connected to the downstream end side of the drainage main body, and an outflow pipe is connected to the downstream end side; A rising pipe having a lower end connected to a maintenance opening selected from the plurality of maintenance openings of the drainage main body, and having an opening and closing lid disposed on the same side as the floor surface and opening and closing the upper opening; A lid provided in the remaining opening for maintenance, to which the ascending pipe is not connected, It is equipped with the closing cap installed in the said branch pipe connection part which is not used, This occlusion cap, A positioning engagement portion for engaging with a positioning engagement portion formed in the branch pipe connecting portion; An installation mistake prevention engagement portion which engages with an installation mistake prevention engagement portion formed in the branch connection part; The same surface as the inner circumference of the main body unit in the state where the positioning engaging portion and the positioning engaging portion engage with each other, and the installation mistake preventing engagement portion and the installation mistake preventing engagement portion are engaged with each other. Collecting drainage, characterized in that it has an inner end surface portion located on the. The method of claim 1, wherein the opening for maintenance, The pipe fitting part which can fit and connect the lower end side of a riser pipe, Collecting drainage, characterized in that it has a lid screw fastening portion capable of screwing the lid. delete delete

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