JP4384475B2 - Sewage for synthetic resin head joint - Google Patents

Description

  The present invention particularly relates to a synthetic resin drop joining sewage basin used in an outdoor drainage facility in a confluence area.

  Recently, a construction method using a collective collective drainage facility has been proposed as a construction method for indoor pipes of wooden houses (for example, JP 2002-327474 A and JP 2002-339424 A related to the present applicant). Gazette, JP2003-119871, JP2003-138621, JP2003-239341).

  According to the construction method of such collective collective drainage equipment, there are various beneficial effects, and in particular, there is an effect of reducing the number of outdoor drainage pipes and drainage branch pipes, which in turn can reduce labor and earthwork costs. It can be expected to be advantageous even in small residential areas.

  By the way, the indoor drainage main pipe by the construction method of such collective collective drainage facilities is installed on the basic concrete surface with a slightly higher level difference than the building ground, while the outdoor drainage main pipe connected to this is public In some cases, a predetermined covering is required, so that the drainage connecting the two pipes becomes the drainage for the drop joint.

  For this reason, the present applicant has conceived to apply a similar one to a manhole with a secondary pipe that is widely used in a manhole for sewage, in order to prevent drainage scattering in the drainage water used for a head joint.

  On the other hand, for the drainage basin used in the merge area, the sewage odor is prevented from being emitted from the opening portion by using an IL trap trap or a V trap trap in which a trap is formed in the invert portion.

  However, the IL trap trap requires a sealing part, and the V trap trap tends to be larger in shape than a normal drain, which is disadvantageous in terms of construction in a newly built house in a small residential area.

  In addition, any trap needs to be excavated as deeply as the trap is formed, which requires labor.

  Therefore, in view of the principle that the rainwater pipe is disposed above the sewage pipe, the present inventor calls the drainage for the above-mentioned drop joint (in this specification, the drainage is also called sewage. Therefore, the sewage is It was conceived to connect a rainwater pipe to a general wastewater and / or toilet drainage).

  In other words, it was conceived that the drainage drainage head can be applied in both the diversion area and the merge area.

  A proposal has been made that the manhole for sewage with a secondary pipe is made of synthetic resin and can be installed even in narrow public roads (Japanese Patent Laid-Open No. 8-109647).

  In this proposed sewage manhole with a secondary pipe, a sewage main connection port is opened on the front and rear surfaces of the main body, which is the lower part of the manhole, and an inverter is formed between them. A pipe connection port is formed, and a riser pipe having an open / close lid at the upper end is connected to the riser pipe connection port.In particular, the riser pipe is separated in the vertical direction, and a connecting frame is interposed therebetween. A branch connection port portion is provided on the side surface of the connection frame body, and a sub pipe outlet opening downward is provided on the inner end side of the branch connection port portion. The sub pipe outlet port faces the inverter portion. The inner sub pipe is connected.

  However, these manholes made of synthetic resin with inner sub-pipe cannot be applied to residential land or small residential land because of the manhole. Of course, the inner sub-pipe cannot be removed after installation. Because it is configured to be difficult to remove as it is fixed to, it is difficult to facilitate inspection and cleaning work in the manhole, which is one of the purposes of using the secondary pipe However, there is a problem that cannot be applied to the drainage drain for the head joining to be devised by the present applicant.

  In order to solve the above-mentioned problems, the present invention provides: 1) A sewage branch pipe in which an instrument trap is provided on the upstream side of the inspection cylinder member of the sewage tank comprising an upper inspection cylinder member and a lower inverter member. In the sewage drain for synthetic resin drop joining, which is provided with an inflow port, an outflow port in the invert member, and a drop in each opening, and an open / close lid provided on the top of the inspection tube member. An inner sub-pipe facing the inverter is joined to the sewage branch pipe inlet, and the inner sub-pipe can be taken out when the opening / closing lid is opened, and the sewage branch is attached to the inspection tube member. Compared with the amount of sewage at the sewage branch pipe inlet by opening a rainwater inlet facing the pipe inlet, connecting a stormwater pipe to the stormwater inlet, and merging the rainwater with the sewage basin. Temporarily a large amount of rainwater flows into the sewage branch pipe through the inner sub pipe. And 2) the rainwater inlet is connected to the rainwater inlet, which prevents the instrument trap upstream of the wastewater from being broken. The synthetic resin head-joining sewage sewage pipe is provided at substantially the same height as the sewage branch pipe inlet, and 3) a sewage trap is provided in the rainwater pipe. 4) The synthetic resin according to claim 1 or 2, wherein 4) the inner sub-pipe is a baffle elbow that allows the inflowing sewage to flow down in a U-turn shape. 5. The synthetic resin according to claim 1, wherein 5) the sewage branch pipe inlet is connected to an indoor drain main pipe of a collective drainage facility. 6) Before The baffle elbow is forced to turn downward in the direction of the straight flow of the inflow port in a horizontal direction to give a reaction force to the flow, and the flow having the reaction force is sent to the outlet of the inverter The gist of the wastewater for synthetic resin drop joining according to claim 4, which is a guide member for making the flow to be connected in a U-turn shape so as to absorb the reaction by being directed in the downstream direction.

  According to the present invention, since the inner sub-pipe is detachably provided in the sewage basin for drop junction, the sewage flowing down like a waterfall does not scatter, the flow is smooth, and the inner sub-pipe is taken out for inspection and cleaning. Since it is possible, the work becomes easy, as well as sewage for falling joints, so even if the outdoor sewage main pipe and the rainwater pipe are superposed in plan view, the rainwater pipe can be sewed without interference. In addition, since the dead space formed by the formation of the head of the sewage can be connected, that is, the part above the outlet can be used, so there is no need for a special merging and further drilling by trap formation It does not increase the depth, which is convenient for laying extremely narrow ground.

  In addition, since the amount of rainwater in continuous flow is much larger than the amount of sewage in intermittent flow in a short time, rainwater tries to flow back to the inlet of sewage slag, but this should be prevented by the inner and sub pipes. As a result, the sewage can be prevented from breaking the upstream instrument trap.

  The invention will be described in more detail by means of an embodiment shown in the accompanying drawings.

  FIG. 1 is a conceptual diagram of an embodiment of the present invention, FIG. 2 is a detailed cross-sectional view of the main part of FIG. 1 (the same parts as in FIG. 7 are given the same reference numerals and explanation thereof is omitted), and FIG. 4 is a partially omitted left side view of FIG. 1, FIG. 5 is a longitudinal sectional view of FIG. 4, FIG. 6 is a detailed view of the main part of FIG. 5, FIG. 7 is a detailed view of the main part of FIG. These are the other principal part detail drawings of FIG.

“Summary of Embodiment of the Present Invention”
First, an outline of an embodiment of the present invention will be described.

  The embodiment of the present invention is constructed in such a manner that a collective collective drainage facility is constructed indoors by using one collective shell and one header-type joint, so that one inflow pipe from the facility is dropped and joined outdoors. When connecting to the synthetic resin sewage mass 10 with the secondary pipe, the internal secondary pipe can be taken out when the opening / closing lid 14 is opened, and a rainwater pipe is connected to the dead space of the inspection cylinder member 50 to join the area. However, it can be used conveniently, and sewage is 10 suitable for the centralized collective drainage system.

  The case where this sewage masu 10 is used especially in a merge area is further demonstrated in FIG.

  In this sewage basin 10, the first horizontal tube 20, the 90 ° elbow 21 and the second horizontal tube 23 (see also FIG. 4 and FIG. 5) that extend through the fabric foundation 24 of the building 2 are used. Since the drainage branch pipe 103 (see FIG. 3) is located above the laying position (embedding depth position) of the outdoor drainage main pipe 106, the position of the drainage branch pipe 103 and the burying depth position of the rainwater pipe 51 are substantially omitted. This is based on the idea that the outdoor drainage main pipe 106 and the rainwater pipe 51 do not interfere even if they overlap in a plan view.

  As a result, in the case of a merging area, a rainwater pipe 51 can be connected to the inspection cylinder member 50 that connects the drainage branch pipe 103, that is, the side of the sewage mast 10, so that rainwater can be merged. Therefore, it is possible to use the complicated and expensive sewage water for the head joint for other purposes and to reduce the construction cost.

  Accordingly, the rain pipe connecting portion (receiving port) 52 having a smaller diameter than the rubber ring receiving port 13A serving as the inflow pipe connecting portion (branch pipe inlet) is connected to the inspection tube member 50 (side portion of the sewage basin 10). It is provided to face the rubber ring receiving port 13A. Of course, since this inspection cylinder member 50 is not used in the diversion area but uses the inspection cylinder member 11 of the drainage tank 10 described later, only the both are configured to be replaceable.

  A rainwater pipe 51 is connected to the rainwater pipe connection portion 52 of the inspection cylinder member 50, and a sewage trap 53 including a rainwater-dedicated U trap is interposed between the rainwater pipe 51 and the sewage odor.

  The rainwater pipe 51 allows rainwater from rain gutters such as the roof of the building 3 to flow from the rainwater standing pipe 54.

  Unlike the fine adjustment by the screw portion 29 of the opening / closing lid 14 which will be described later, the inspection cylinder member 50 is provided with a cylindrical lid receiving frame 56 formed slightly long, and the legs are cut to open and close the opening / closing lid 14. The ground surface GL is finely adjusted to match. In this case, it is preferable to display a cut tube line on the lid receiving frame 56.

  Therefore, an upward opening (upper part) of the inspection cylinder member 50 is formed in the frame receiving port 55, and the lid receiving frame 56 adjusted in the cut tube is adhesively bonded to the frame receiving port 55.

  In addition, the downwardly facing opening 31 of the inspection cylinder member 50 is inserted into the upper end side of the height adjusting member 15 and stopped by the opening stopper 57.

  When the outer diameter of the foot of the lid receiving frame 56 and the outer diameter of the height adjusting member 15 are matched, the lid receiving frame 56 can be directly joined to the inverter member 12, and the parts can be shared for other uses. .

  The sewage basin 10 and other components in the sub-pipe, such as the inverter member 12, the downward guide member 25, the attachment / detachment mechanism and the drop junction structure 22 are the same as the explanation part of the drainage basin 10 described later. Description is omitted.

  Next, an example of a construction method for applying such sewage masu (hereinafter referred to as drainage mushroom) 10 to an extremely narrow land will be described.

  This is because, in general construction methods for outdoor drainage facilities, when the fabric foundation formwork is removed, there is an excavated part called root cutting with a predetermined width and depth. After providing the pipe foundation to prevent equal settlement, the outdoor drainage main pipe 106 and the drainage pipe 10 are immediately installed and backfilled, and after constructing the drop junction structure 22 described in detail later, that is, after the building is completed, Because it is a construction method of the outdoor drainage facility that re-digs and connects with the drainage mast 10, it does not dig twice for the installation of the drainage mast 10, and thus can expect low labor and low earthwork costs. Conveniently match the features of the collective collective drainage facility construction method, especially the feature of reducing the number of complex and expensive drop junction drainage 10 as well as the convenience of the general outdoor drainage facility construction method. Is something that can be done.

  As shown in FIG. 3, the drainage basin 10 used in the construction method of such an outdoor drainage facility is connected to the outdoor drainage main pipe 106 flowing in the direction a from the downstream side as shown in FIG. In addition, the drainage turbulence (jumping) due to the falling waterfall in the drainage basin 10, that is, the scattering of the drainage is prevented.

  Therefore, the position of the drainage basin 10 in the outdoor drainage main pipe 106 connected to the outflow port 42 provided on the side of the drainage basin 10 is determined as shown in FIGS. It is set on the upstream side in the flow of the outdoor drainage main pipe 106 from the axial extension of the drainage sleeve such as a void pipe in the figure), that is, from the extension of the pipe axis of the first horizontal pipe 20. The reason is described below.

  If it is set at the crossing point of the first horizontal pipe 20 on the pipe axis, the connection with the downstream side of the drop joint structure 22 is simply inserted because the drainage 10 and the fabric foundation 24 are very close to each other. However, it is not only difficult due to so-called jig piping, but also cannot absorb construction errors. In particular, when re-digging and connecting with a large number of general drainage branch pipes 103, the difficulty increases.

  Moreover, when the position of the drainage basin 10 is set on the downstream side, the waterfall in the drainage basin 10 is disturbed due to the result of the experiment or the reason described later.

  Now, these outdoor drainage main pipe 106 and drainage basin 10 are installed on the upstream side of the first horizontal pipe 20 by a predetermined distance from the extension of the pipe, and then backfilled. The drainage drain 10 is connected via a curved pipe (elbow) 21 or a second horizontal pipe 23.

  Therefore, according to the construction method using the drainage basin 10 as described above, the drainage basin 10 can be positioned easily, and digging is eliminated twice for the installation of the drainage basin 10, saving labor and process. Cost reduction due to reduction is possible.

  Therefore, this construction method is convenient because the use of the outdoor drainage basin 10 in the collective collective drainage facility is one to few, but is not limited thereto, and is not limited to this. Of course, it can also be applied to construction methods for general drainage basins and outdoor drainage main pipes.

"Summary of drainage mast 10 used for diversion area"
Next, an outline of the drainage basin 10 used in the diversion area will be described.

  The outdoor drainage basin 10 of the present embodiment is a small caliber installed in the vicinity of the basic concrete of the building 2, and the whole is made of synthetic resin, in particular, PVC injection molding. The outdoor drain main pipe 106 can be applied to a pipe having a diameter of 75 mm to 150 mm. Therefore, the diameter of the inspection cylinder member 11 of the drain 10 is configured to be 150 mm to 200 mm. The diameter of the rainwater pipe 51 that can be connected to the drainage basin 10 is preferably 50 mmφ to 75 mmφ.

  In particular, in FIG. 6, the drainage basin 10 mainly comprises an upper inspection cylinder member 11 and a lower inverter member 12, and in particular, an inflow pipe connecting portion 13 that is an inflow port is integrated with the inspection cylinder member 11. Because it is molded and protrudes, it is not a regular tubular tube, but a laterally-fed tube (for example, the vertical part in the T-shape is smaller in diameter than the horizontal part and is biased to one end of the horizontal part. Tube).

  The inspection cylinder member 11 and the inverter member 12 are used in a wide variety such as a straight, right and left 90 degrees, a spherical inverter, a stepped spherical inverter, and the like. Therefore, in order to adjust the embedding depth, etc., it is configured as a separate body and joined when used in the manufacturing plant or construction site.

  In addition, the upper and lower ends of the inspection cylinder member 11 (that is, the upper portion of the drainage basin 10) are directly (which means that a separate riser pipe is not provided even if a ring-shaped lid receiving frame is provided. Is provided. Therefore, the opening / closing lid 14 and the top of the inflow pipe connecting portion 13 have substantially the same height and are substantially coincident with the ground surface GL.

  As a result, when this drainage basin 10 is used, for example, various miscellaneous drainage devices are located above the ground surface GL, and when drainage from above (including the floor) flows down to the outdoor drainage main pipe 106, The elbow body and vertical pipe as described above are not required, and the installation space can be saved accordingly, that is, the space can be saved, and the construction can be installed very easily even in extremely narrow land.

  When the outdoor drainage main pipe 106 is deeply embedded and the soil cover increases, an intermediate height adjusting member (also called an adjuster using a cut pipe) provided between the inspection cylinder member 11 and the inverter member 12 is used. 15 tube lengths are selected as appropriate. Therefore, the height can be adjusted very easily.

  In addition, since the open / close lid 14 and the top of the inflow pipe connection portion 13 are made to substantially coincide with the ground surface GL, the inflow pipe, for example, the indoor drainage main pipe 5 side cannot be covered with earth, and its protection is a concern. Since the drainage basin 10 is installed in the vicinity of the building 2, the indoor drainage main pipe 5 side is protected from external force by a foundation such as a concrete, and there is no concern about it, and it is close to it, so it is convenient for use in extremely narrow land .

"Details of drainage mast 10 used for diversion area"
Next, details of the embodiment of the present invention used for the diversion area will be described.

  In FIGS. 4 to 8, the drainage basin 10 of this embodiment is a preferred example of the following specific place.

  For example, it is an application example used for outdoor drainage in an underfloor piping facility for concentrated collective drainage shown in the above-mentioned JP-A-2002-327474, JP-A-2003-119871, and the like.

  That is, the indoor drainage main pipe 5 is provided in the moisture-proof concrete 3 under the floor of the building 2, and the indoor drainage main pipe 5 is necessarily located above the ground surface GL.

  The indoor drainage main pipe 5 is applied to an outdoor drainage main pipe 106 having a predetermined burying depth (minimum of about 20 cm) which necessarily requires covering with a soil, and a drainage trough 10 for drop-joining, and exhibits its characteristics.

  In order to connect the indoor drainage main pipe 5 to the drainage drain 10 having one drainage inlet as shown in FIG. 4, the first 45 degree elbow 16 facing downward, the 45 degree inclined pipe 17, Slowly composed of a second 45-degree elbow 18 pointing upward, a first horizontal pipe 20 and a 90-degree bent pipe 21 penetrating a cloth foundation 24 erected on the footing foundation 19, and a second horizontal pipe 23, etc. A simple drop junction structure 22 is used. In this case, in short, the indoor drain main pipe 5 is connected to the drain 10.

  Therefore, since this drop junction structure 22 is combined with this drainage mass 10, the gradient becomes further gentle and turbulent flow does not occur in the flow path, and as a result, generation of negative pressure of the air in the pipe can be prevented as much as possible. Prevents upstream instrument traps (not shown) from being broken.

  And it has the feature on construction that the downstream side of this drop junction structure 22 is connected by simply inserting it into the connecting part 13 for the inflow pipe of the drainage.

"Detailed description of drainage mast 10"
The basic concrete as described above, that is, the drainage basin 10 installed in the vicinity of the fabric foundation 24 will be described in more detail.

  In FIG. 5, an opening / closing lid 14 having an adjustable height is provided at the upper end, that is, the upper portion of the inspection cylinder member 11 of the drainage tank 10, and one (or two) is provided on the side adjacent to the opening / closing lid 14. The rubber ring receiving port 13A is provided as the inflow pipe connecting portion 13 described above. However, when the rainwater pipe 51 is connected, the number is one.

  In order to smooth the flow of the drainage from the rubber ring receiving port 13A to the outdoor drainage main pipe 106, the drainage tank 10 has a baffle body (deflector) on the axial extension of the rubber ring receiving port 13A. A downward (or U-turn) guide member 25 called a body is detachably incorporated so that it can be taken out when the opening / closing lid 14 is opened. That is, a U-turn member (a kind of inner sub-pipe) is built in.

  If the downward guide member 25 of this flow is constituted by a baffle elbow 25A in particular, it will not only prevent the drainage from spreading around the drainage and the solid matter in the drainage, but also the drop junction structure 22 and the rubber ring receiving port 13A. It is possible to guide the flow of the drainage that goes straight in the horizontal direction into the inverter 26 by smoothly turning downward.

  In this way, the wastewater that goes straight in the horizontal direction (in particular, general wastewater) is forced to turn downward, so that the wastewater has a reaction force.

  Therefore, if the invert member 12 is an invert 26 such as a straight when it is allowed to flow down to the inverter 26 as it is, if it is dropped into another second flow, for example, toilet drainage, this reaction force causes this. There is a risk of colliding with another second flow and scattering solids in the second flow.

  In this case, although the straight type spherical invert for starting point flows out most favorably for the U-turn member, the straight type invert 26 is used in the case where there is another second flow. The stepped spherical inverter can be matched well with the U-turn member and merged. As a result, since it is a starting point and a straight type, an extremely narrow ground is advantageous.

  Therefore, in order to absorb this reaction force, if the direction of the outlet side of the baffle elbow 25A is directed to the downstream direction in the inverter 26, that is, if it is U-turned, the waterfall unexpectedly becomes the second flow. To join smoothly. Therefore, coupled with the effect of the ultra-small land installation, it is a space-saving and smooth flow without turbulence or scattering of drainage due to falls.

  In other words, the flow direction of the rubber ring receiving port 13A is directed to the downstream direction in the outdoor drainage main pipe 106, and therefore, the flow direction of the indoor drainage main pipe 5 is connected to the outdoor drainage main pipe 106 so as to be U-turned in the drainage 10. To do. In other words, the drainage of the arrow a is caused to U-turn as indicated by the arrow a while dropping the drainage of the arrow a by the drainage basin 10.

  In short, the drainage basin 10 has a branch pipe connection part (13) as an inlet to which the drainage branch pipe (103) is connected from the downstream side, and flows into the drainage pipe 10 from the downstream side. There is a member (25) for U-turning drainage from the branch pipe connection (13) to an outlet provided at the lower part of the drainage basin 10, and the outlet at the lower part is connected to the outdoor drainage main pipe 106. Because it is connected to the pipe, it is a space-saving piping that can absorb various construction errors, and it is also beneficial to exhibit a smooth flow without turbulence and scattering of drainage due to falls. The drainage will be 10.

"More detailed explanation of drainage mast 10"
Next, the drainage basin 10 will be described in more detail.

  In particular, in FIG. 6, the synthetic resin opening / closing lid 14 is provided at the upper end portion of the PVC injection molding inspection cylinder member 11 so that the height can be adjusted to a slight degree and is sealed through the packing 27.

  For this height adjustment, the outer surface of the ring-shaped synthetic resin lid receiving frame 28 in which the opening / closing lid 14 is fitted and the inner surface of the upper end portion of the inspection cylinder member 11 are screwed together by the screw portion 29. The height of the opening / closing lid 14 can be finely adjusted by screwing the screw portion 29 back and forth.

  Accordingly, the top of the inflow pipe connecting portion 13 is lowered by the height of the lid receiving frame 28, and therefore, in the present specification, the term including the lid receiving frame 28 is referred to as substantially the same.

  In order to prevent earth and sand and intrusion water from entering the screw portion 29, a folded portion 30 is provided at the upper end of the lid receiving frame 28 and covers the outer surface of the upper end of the inspection cylinder member 11.

  Therefore, although it is the two minimum parts of the inspection cylinder member 11 and the lid receiving frame 28, the number of parts is not increased, and entry of these parts can be prevented.

  In addition, this height adjustment is performed when the pipe length of the inspection cylinder member 11 or the height adjustment member 15 is not particularly considered, or when it is already assembled, adjustment during construction on the ground surface GL or adjustment for newly laid asphalt. Used for etc. Of course, the fine adjustment structure for the height of the opening / closing lid 14 may be an adjustment structure using a cut tube of the lid receiving frame 56.

  Next, the inspection cylinder member 11 is formed of a tee-like tube as described above, and the height adjustment is made by forming the opening 31 at the lower portion of the inspection cylinder member 11. The member 15 is inserted into the upper end side.

  The lower end side of the height adjusting member 15 is inserted into a receiving portion 40 formed on the upper opening side of the inverter member 12. The inverter member 12 is provided with an outlet 42 to which the outdoor drain main pipe 106 is connected.

  Next, a baffle elbow 25A, which is made of PVC (synthetic resin) injection molding, falls down as shown by an arrow a to further U-turn, A semi-cone-shaped U-turn assisting guide member 34 and a connecting member 35, which are connected to each other and adjustable in height, are adhesively bonded to each other to form an integrated monolith. Therefore, these specific members are collectively referred to as a U-turn member or a guide member that regulates the flow in a U-turn shape. Of course, the U-turn assisting guide member 34 has various variations and may be a 90 ° elbow.

  The lower end of the U-turn assisting guide member 34, that is, the lower end of the U-turn member is substantially aligned with the top of the outdoor drainage main pipe 106 so as not to hinder the full flow of the second flow, To prevent mooring.

  The size and shape of the baffle elbow 25A is such that when the diameter of the rubber ring receiving port 13A is 75 mmφ, the inlet side of the baffle elbow body 33 is an ellipse of about 97 mm and 83 mm (see FIG. 7A). The outlet side is constituted by a deformed elbow having a circular shape of about 77 mmφ. Of course, the inlet side of the baffle elbow body 33 may be a circle having the same diameter as the rubber ring receiving port 13A.

  Next, an example of attachment / detachment of the baffle elbow 25A to the inspection cylinder member 11 will be described.

  7 and 8, FIG. 7A is a plan view of the inspection cylinder member 11, FIG. 7B is a longitudinal sectional view of FIG. 8A, FIG. 8A is a plan view of the baffle elbow main body 33, and FIG. Is a longitudinal sectional view, (C) is a sectional view taken along arrows B-B of (B), and (D) is a side view taken along arrows A-A of (A).

  In these figures, angle-shaped locking pieces 36 having a pair of left and right horizontal portions are integrally projected on the outer surface of a substantially central portion of the baffle elbow main body 33.

  The front end of the locking piece 36 is formed in a circular arc so as to match a horizontal circular arc in a shelf portion 37 described later.

  Further, a pair of left and right angle-shaped shelves 37, 37 having a horizontal arcuate horizontal portion project from the inner surface of the inspection ring member 11 on the shaft extension side of the rubber ring receiving port 13 </ b> A. .

  An insertion guide piece 38 that is inclined rearward upward is connected to the rear end of the shelf portion 37 (on the side opposite to the rubber ring receiving port, the same applies hereinafter).

  Therefore, the baffle elbow main body 33 to which the U-turn assist guide member 34 and the like are attached is directed toward the outlet side of the rubber ring receiving port 13, and the gripping portion 39 protruding upward is gripped. When the stop piece 36 is slightly forcibly inserted from above along the insertion guide piece 38, the engagement piece 36 is guided forward by the insertion guide piece 38, placed on the shelf portion 37, and the engagement piece 36. The arc formed at the tip of the arc is joined to the arcuate angle vertical portion of the shelf 37.

  At that time, the inlet of the baffle elbow 25A is in close contact with the outlet of the rubber ring receiving port 13A. Of course, in order to take out the baffle elbow 25A for inspection / cleaning, the opening / closing lid 14 may be opened, the holding part 39 may be held and pulled out.

  The screw portion (female screw) 29 provided on the inner periphery of the upper end of the inspection cylinder member 11 is constituted by a discontinuous screw body (of course, an all-around screw body is also acceptable).

  In addition, what protects the horizontal inflow pipe connecting portion 13 side is not limited to the foundation of the building, but may be a thin asphalt or other structure, such as a fence or a permanent tank, for preventing damage.

It is a conceptual diagram of the Example of this invention. FIG. 2 is a detailed cross-sectional view of a main part of FIG. It is a conceptual diagram of the application equipment of FIG. It is a partially omitted left side view of FIG. It is a longitudinal cross-sectional view of FIG. It is a principal part detail drawing of FIG. It is a principal part detail drawing of FIG. FIG. 7 is another detail view of the main part of FIG. 6.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Dirty water, drainage, 11, 50 ... inspection cylinder member, 25A ... baffle elbow, 51 ... rainwater pipe, 103 ... drainage branch pipe, 106 ... outdoor drainage main pipe

Claims (6)

Upper inspection cylinder member and a lower inverter - a sewage branch pipe inlet having a tool trap upstream to the inspection cylinder member sewage masu consisting of bets member, said inverter - an outlet to preparative member, drop In the sewage drain for synthetic resin drop joints with an opening and closing lid on the top of the inspection cylinder member ,
The inverter - inverter DOO member - the auxiliary tube inside facing the preparative provided joined to the sewerage branch pipe inlet, the inner secondary pipe, thereby enabling extraction to open when said lid, said inspection cylinder to face the sewage branch pipe inlet to the member opened rainwater inflow port, rainwater connects the rainwater pipe to該雨water inflow port, by merging with soil water masu, branch flow for the sewerage A feature that prevents the instrument trap upstream of the waste water from being broken by preventing the rainwater temporarily larger than the amount of waste water from the inlet from flowing back to the branch pipe inlet for waste water through the inner sub pipe. Sewage for synthetic resin drop joints. Masu plastic drop bonding sewage according to claim 1 provided with the rainwater inflow port to the sewerage branch pipe inlet substantially the same height position. The sewage for synthetic resin drop joining according to claim 1 or 2, wherein a sewage trap is provided in the rainwater pipe .   The synthetic resin head-joint sewage according to claim 1 or 2, wherein the inner sub-pipe is a baffle elbow that allows the sewage that flows in to flow in a U-turn shape. The sewerage branch pipe inlet 1 Tsutoshi, this Masu plastic drop bonding sewage according respectively to claims 1 to 4 connected to house drain main pipe set collective drainage. The baffle elbow is forced to turn downward in the direction of the flow straight ahead in the horizontal direction of the inflow port to give a reaction force to the flow. The synthetic resin head-joint sewage according to claim 4, wherein the sewage is used as a guide member for making the flow tie in a U-turn shape so as to absorb the reaction by being directed downstream of the outlet.

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