JP7020970B2 - Pipe fittings - Google Patents

Description

The present invention relates to a pipe joint that constitutes a drainage header and improves the drainage of sewage from the side pipe portion to the main pipe portion.

Conventionally, the drainage branch pipe that is placed under the floor of the building and extends from the discharge starting point of domestic wastewater in the bathroom, vanity, kitchen, etc. is connected to the upstream side, and the drainage main pipe drawn through the foundation of the building is downstream. By connecting, a drainage header is used in which domestic wastewater is connected from the upstream side to the downstream side and drained to a predetermined position outdoors.

Some of the drainage headers are configured to improve internal drainage. In Patent Document 1 (Japanese Unexamined Patent Publication No. 8-13562), in the T-shaped tube in the unit body, a rectifying blade is attached to the communication portion in the elliptical tube, and the rectifying blade is attached to the upstream side of the elliptical tube communication portion. By fixing and freeing the downstream side, the flow is guided by the rectifying blade. Thereby, a unit body for a wall drainage meeting pipe capable of smoothly draining sewage flowing on the upstream side is disclosed.

Further, in Patent Document 2 (Japanese Unexamined Patent Publication No. 2005-2651), a drainage header provided with a drift guide protruding toward the inner diameter side on the inner peripheral surface of the connection port to the header main of the branch pipe connection portion for filth. Discloses a drainage header that makes it possible to improve the sweepability of the sewage that has flowed in from the sewage branch pipe connection portion.

Japanese Unexamined Patent Publication No. 8-13562 Japanese Unexamined Patent Publication No. 2005-2651

However, in the unit body for the wall drainage meeting pipe of Patent Document 1, since the downstream side of the rectifying blade is free, a solid material having a large weight may go straight and stagnant in the elliptical pipe. Further, in the drainage header of Patent Document 2, a part of the filth flowing inside the filth branch pipe connection portion can be guided to the downstream side of the header main pipe by the drift guide provided at the filth branch pipe connection portion. However, when the flow rate is large, high improvement in sweepability cannot be expected.

Focusing on the structure of the drainage header, it is clear that it does not have a structure that can reliably guide the sewage flowing from the side pipe to the downstream side of the main pipe, and there is still room for improvement. there were.

Therefore, the present invention was created in view of the above problems, and is a pipe capable of guiding the sewage flowing from the side pipe portion to the main pipe portion to the downstream side of the main pipe portion and preferably improving the drainage property of the drainage header. The purpose is to provide fittings.

In order to solve the above problems, the present invention
It is a pipe joint for connecting the pipe connected to the drainage facility on the upstream side.
A pipe joint main body including a main pipe portion arranged in the lateral direction and a side pipe portion provided on the side of the main pipe portion, and
It is provided integrally with the pipe joint main body, and is configured to include a drainage guide portion that guides sewage flowing from the side pipe portion to the downstream side of the main pipe portion.
The drainage guide section
A drainage cutoff portion that prevents the inflow of sewage from the confluence where the main pipe portion and the side pipe portion meet to the upstream side of the main pipe portion and in the straight direction of the side pipe portion.
Inside the main pipe portion, a drainage support portion that supports the sewage flowing in from the confluence from below and guides the water to the downstream side of the main pipe portion is provided.
The upper part of the drainage support is open.
The drainage guide portion is provided so as to be separated from the pipe bottom of the main pipe portion.
Provided is a pipe fitting characterized by.

In the pipe joint of the present invention having such a configuration, the sewage flowing from the side pipe portion into the main pipe portion is appropriately guided by the drainage cutoff portion and the drainage support portion constituting the drainage guide portion, and the sewage is smoothly guided to the main pipe portion. It can be guided to the downstream side of the water to improve drainage. Further, since the drainage guide portion is provided apart from the pipe bottom of the main pipe portion, the vicinity of the pipe bottom of the main pipe portion is not blocked by the drainage support portion, and the sewage flowing through the main pipe portion cannot be blocked. In addition, since the heavy solid matter travels on the bottom of the pipe, a course can be reliably secured.

Further, in the above-mentioned pipe joint of the present invention,
The drainage support portion includes an inclined surface that inclines downward toward the downstream side of the main pipe portion.
It is desirable that the downstream end edge of the drainage support portion is located below the lower end of the side pipe portion.

In the pipe joint of the present invention having such a configuration, the sewage flowing from the side pipe portion into the main pipe portion can be more smoothly guided to the downstream side of the main pipe portion, so that the drainage property can be further improved.

Further, in the above-mentioned pipe joint of the present invention,
The main section is provided with an inspection port at the top and has an inspection port.
It is desirable that the inspection port and at least a part of the drainage guide portion overlap with each other in a plan view.

In the pipe joint of the present invention having such a configuration, it is possible to easily visually check for foreign matter clogging such as solid matter in the vicinity of the drainage guide portion from the inspection port, and to insert a jig for maintenance easily. Maintenance can be performed.

Further, in the above-mentioned pipe joint of the present invention, further
When the drainage guide portion is viewed from the upstream side in the pipe axis direction of the side pipe portion , it is desirable that the end portion of the drainage guide portion is formed obliquely toward the downstream side of the main pipe portion.

In the pipe joint of the present invention having such a configuration, even if a large amount of sewage flows from the side pipe portion into the main pipe portion, the upper side (strictly speaking, the downstream side upper side with the main pipe portion viewed from the inside of the side pipe portion). ) Is opened, so that sewage can flow over the drainage guide and be guided from above the drainage guide to the bottom of the main pipe, so that the drainage guide flows into the main pipe from the side pipe. It is possible to prevent stagnation and facilitate guidance to the downstream side of the main pipe. Further, when a heavy solid matter flows from the side pipe portion into the main pipe portion, the solid matter moves on the bottom of the pipe and can be guided to the downstream side of the main pipe portion along the shape of the drainage guide portion. That is, the pipe joint of the present invention having such a configuration can exhibit both the effect of preventing the stagnation of drainage and the effect of smoothly guiding the solid matter to the downstream side of the main pipe portion.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a pipe joint capable of guiding the sewage flowing from the side pipe portion to the main pipe portion to the downstream side of the main pipe portion and preferably improving the drainage property of the drainage header.

It is a perspective view explaining the outline of the drainage header 1001 configured by the pipe joint 1 of this embodiment. It is a perspective view of the pipe joint 1 in this embodiment. It is a side view which looked at the pipe joint 1 in this embodiment from the downstream side X2. It is sectional drawing which looked at the side pipe part 5 side from the inside of the main pipe part 3 about the pipe joint 1 in this embodiment. It is a figure which shows the structure of the pipe joint 1 in this embodiment, and FIG. (B) is a cross-sectional view of arrowhead A shown in FIG. It is a side view which looked at the pipe joint 1 of this embodiment in the direction Y from the outside of the side pipe part 5 shown in FIG. 7A is a view showing the structure of the drainage guide portion 107, FIG. 7A is a plan view of the drainage guide portion 107 viewed downward from the inside of the main pipe portion 3, and FIG. 7B is a drainage guide portion 107. Is a front view seen from the downstream side X2 to the upstream side X1 inside the main pipe portion 3.

Hereinafter, a typical embodiment of the pipe joint 1 according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to those shown in the drawings, and each drawing is for conceptually explaining the present invention. Therefore, the dimensions, ratios or numbers are exaggerated as necessary for easy understanding. Alternatively, it may be abbreviated. Further, in the following description, the same or corresponding parts may be designated by the same reference numerals, and duplicate description may be omitted.

The term "sewage" as used herein is a concept that broadly includes sewage to be discharged (sewage such as domestic wastewater), and includes, for example, toilet wastewater and miscellaneous wastewater other than toilet wastewater, and further. Also includes toilet drainage containing solids, large and small.

1. 1. Outline of the drainage header 1001 and the pipe joint 1 The outline of the drainage header 1001 configured by the pipe joint 1 of the present embodiment will be described with reference to FIG. FIG. 1 is a perspective view illustrating an outline of a drainage header 1001 configured by a pipe joint 1 of the present embodiment.

The drainage header 1001 is a drainage tool used by arranging it under the floor of a building, etc., and connects a drainage branch pipe extending from the discharge starting point of domestic wastewater from a bathroom, a vanity, a kitchen, etc. to the upstream side of the building. By connecting the drainage main pipe drawn through the foundation of the building to the downstream side, domestic wastewater is drained from the upstream side to the downstream side and discharged to the outside.

By adopting a drainage system using the drainage header 1001, domestic wastewater can be collected from the drainage starting point to the drainage header 1001, the number of drainage basins can be significantly reduced, and the initial cost of construction can be effectively reduced. It becomes. In addition, since it is necessary to dispose a maintenance port (inspection port) in the drainage basin outdoors to solve problems such as clogging caused by the retention of filth, the number of drainage basins arranged can be reduced. If this is the case, the number of maintenance openings around the building will be reduced, and the appearance will not be spoiled.

In the drainage header 1001 of the present embodiment, as shown in FIG. 1, four pipe joints 1 are arranged in a row, and the connection portions of the pipe joints 1 adjacent to each other are connected by being bonded with an adhesive, and the drainage main pipe is connected. The connection portions of the end closing members 1005a and 1005b provided with the portions 1003a and 1003b are connected with an adhesive in the same manner as described above, and are connected to the pipe joints 1 located at both ends on the upstream side and the downstream side. It is a thing.

The pipe joint 1 of the present embodiment is a main component of the drainage header 1001, and the drainage header 1001 is formed by connecting a number of pipe joints 1 corresponding to the number of drainage branch pipes extending from the drainage starting point of the building. That is, the pipe joint 1 is an important member that guarantees the performance of the drainage header 1001 at its core and greatly affects the drainage property of the drainage header 1001 depending on the structure provided.

2. 2. Structure of Pipe Fitting 1 Subsequently, the structure of pipe fitting 1 in the present embodiment will be described in detail with reference to FIGS. 2 to 6. In this embodiment, as shown in FIG. 2, the direction X is from the upstream side X1 of the main pipe portion 3 to the downstream side X2 (the pipe axis direction of the main pipe portion 3), and the direction Y is the side pipe portion 5 side with respect to the main pipe portion 3. Further, the vertical direction (vertical direction with respect to the pipe axis of the main pipe portion 3) is defined as the direction Z.

Here, FIG. 2 is a perspective view of the pipe joint 1 in the present embodiment, and FIG. 3 is a side view of the pipe joint 1 in the present embodiment as viewed from the downstream side X2. FIG. 4 is a cross-sectional view of the pipe joint 1 in the present embodiment as viewed from the inside of the main pipe portion 3 to the side pipe portion 5. 5 (a) and 5 (b) are views showing the structure of the pipe joint 1 in the present embodiment, and FIG. 5 (a) is a plan view looking down on the pipe joint 1 of the present embodiment from above the inspection port 15. FIG. 5 (b) is a cross-sectional view taken along the line A shown in FIG.

As shown in FIG. 2, the pipe joint 1 of the present embodiment generally includes a pipe joint main body composed of a main pipe portion 3 and a side pipe portion 5, a drainage guide portion 7, and an inspection port 15. The main pipe portion 3 merges the sewage from each drainage starting point led to the drainage header 1001 and guides the water to the drainage main pipe. The side pipe portion 5 connects a drainage branch pipe extending from the drainage starting point and guides sewage to the main pipe portion 3. Further, the drainage guide portion 7 guides sewage (including solid matter) from the side pipe portion 5 to the downstream side X2 of the main pipe portion 3 inside the connection portion between the main pipe portion 3 and the side pipe portion 5 for inspection. The mouth 15 is for maintaining troubles caused by clogging of the inside of the pipe joint 1 with dirt or the like.

The pipe joint 1 may be formed of, for example, a resin such as a rigid vinyl chloride resin, and it is desirable that the pipe joint 1 is integrally formed with the above configuration. Further, if it is formed by imparting transparency (or transparency), the internal situation can be visually recognized, and maintenance and the like can be performed more easily.

<Structure of main section 3>
The main pipe portion 3 is a substantially cylindrical portion mainly constituting the pipe joint 1, and as described above, sewage from each drainage starting point of the building is internally merged and guided to the drainage main pipe connected to the downstream side X2. It is a thing. When this main pipe portion 3 is cut substantially orthogonal to the direction X and viewed in cross section, the inside forms a substantially egg shape with the lower part of the direction Z as the apex (see particularly FIG. 3), and the sewage flowing inside the main pipe portion 3 is formed. Can be suitably used to induce solid matter together with sewage.

Further, a first connection portion 17 and a second connection portion 19 are formed on the upstream side X1 and the downstream side X2 of the main pipe portion 3, respectively. The first connecting portion 17 is a portion connected to the second connecting portion provided by another pipe joint (adjacent pipe joint) arranged on the upstream side X1, and the second connecting portion 19 is on the downstream side. It is a portion connected to the first connection portion provided by another pipe joint (adjacent pipe joint) arranged in X2.

That is, the first connecting portion 17 and the second connecting portion 19 are formed so as to be fitted to each other (in this embodiment, a plug-in type fitting) while aligning the axes of the main pipe portion 3 (particularly with reference to FIGS. 1 and 1). (See FIG. 4), each pipe joint constituting the drainage header 1001 is connected by fitting the first connection portion and the second connection portion individually provided (strictly speaking, the adhesive as described above). More firmly fixed using.).

<Structure of side pipe portion 5>
The side pipe portion 5 is a substantially cylindrical branch pipe connected to the main pipe portion 3, and is a portion for guiding sewage guided from the drainage pipes extending from each drainage starting point of the building to the main pipe portion 3. One end of the side pipe portion 5 (the main pipe portion 3 side in the direction Y) is connected to the side surface of the main pipe portion 3 described above, and the insides of both are communicated with each other, and is located on the opposite side to the one end portion. At the other end, a third connection portion 21 to which a drainage pipe extending from each drainage starting point of the building can be connected is formed (see particularly FIGS. 2 and 5). In the present embodiment, the side pipe portion 5 has a straight pipe shape but may have a curved pipe shape, and the pipe axis of the side pipe portion 5 is perpendicular to the pipe axis of the main pipe portion 3, but the main pipe It may be formed diagonally toward the downstream side of the portion 3.

It is preferable that the sizes of the main pipe portion 3 and the side pipe portion 5 described above can be optimized according to the scale of the building to be used and the amount of drainage. Therefore, it is desirable to provide a plurality of types of pipe joints 1 configured by different sizes of the above parts so that the drainage header 1001 optimized by the user can be configured.

<Structure of inspection port 15>
The inspection port 15 is a substantially circular hole arranged above the main pipe portion 3 described above, and communicates the inside and outside of the main pipe portion 3 in the direction Z from the upper side to the lower side of the main pipe portion 3. The specific forming positions are the pipe axis (direction X) of the main pipe portion 3 and the pipe shaft (direction Y) of the side pipe portion 5 in a state where the pipe joint 1 of the present embodiment is viewed in a plan view from above to the bottom of the direction Z. It is desirable to form it with a predetermined diameter centered on the position where) and In addition, in order to fit a separately prepared lid (not shown) into the inspection port 15, for example, a screw thread may be formed on the end edge.

<Structure of drainage guide 7>
The drainage guide portion 7 is arranged inside (the confluence) where the main pipe portion 3 and the side pipe portion 5 (the other end side) are connected, and the sewage from the side pipe portion 5 is mainly piped as described above. It guides to the downstream side X2 of the part 3. The drainage guide portion 7 is a characteristic portion provided in the pipe joint 1 of the present embodiment, and by providing the drainage guide portion 7, from the side pipe portion 5 to the main pipe portion 3 as compared with the conventional case. The flow direction of the invaded sewage (including solid matter) can be more reliably directed to the downstream side X2 of the main pipe portion 3, and the sewage is guided to the main pipe portion 3.

The drainage guide portion 7 includes a drainage cutoff portion 9 located substantially above and a drainage support portion 11 integrally formed below the drainage cutoff portion 9. More specifically, the drainage cutoff portion 9 does not make the flow direction of the sewage induced from the side pipe portion 5 different from the upstream side X1 of the main pipe portion 3 and the straight direction (inner side surface side of the main pipe portion 3). , Forcibly guide the sewage toward the downstream side X2 of the main pipe portion 3 and prevent the sewage from going straight in the direction Y to prevent or suppress it. Further, the drainage support portion 11 supports and receives the sewage that has entered the main pipe portion 3 from the side pipe portion 5 from below, and forcibly guides the sewage toward the downstream side X2 of the main pipe portion 3.

The drainage cutoff portion 9 is a wall-shaped portion that rises in the substantially direction Z near the edge of the upstream side X1 of the confluence of the side pipe portion 5 and the main pipe portion 3, and faces the direction X in the main pipe portion 3. ing. Further, since it protrudes into the main pipe portion 3 from the confluence along the cross section of the side pipe portion 5 (direction Y), it is formed in a curved surface shape that swells on the upstream side X1 and is connected to the drainage support portion 11 below. .. The position of the upper end of the drainage cutoff portion 9 is kept so as not to come into contact with the top surface inside the main pipe portion 3.

Further, the drainage cutoff portion 9 faces the confluence of the side pipe portion 5 and the main pipe portion 3 so as to prevent the inflow of the sewage flowing from the side pipe portion 5 into the main pipe portion 3 by going straight in the direction Y. It is formed by wrapping around a curved surface (see especially FIGS. 3 to 6). If a large amount of sewage flows from the side pipe portion 5 into the main pipe portion 3, the sewage may overflow the drainage cutoff portion 9 and go straight in the direction Y, but the solid matter is in the side pipe portion 5. Since the sewage travels near the bottom of the pipe and flows above the pipe of the side pipe portion 5, it can be appropriately flowed into the main pipe portion 3.

The drainage support portion 11 projects (direction Y) from the confluence into the main pipe portion 3 near the lower edge of the confluence of the side pipe portion 5 and the main pipe portion 3, and merges in the direction Y from the inside of the main pipe portion 3. It is a floor-like portion (having an inclined surface) formed so as to incline downward in the direction Z and toward the downstream side X2 when the mouth is viewed from the front. Further, the upper part of the drainage support portion 11 is open to the upper inner surface of the inspection port 15 and the main pipe portion 3, and a predetermined space is formed. This makes it possible to prevent the sewage from staying in the drainage guide portion 7.

In the present embodiment, the upstream side X1 of the drainage support portion 11 is connected to the lower side of the drainage cutoff portion 9 described above, so that the drainage cutoff portion 9 and the drainage support portion 11 have a curved surface and have a smooth shape. They are connected and integrally formed (see particularly FIGS. 2 to 4). As a result, the sewage that is about to flow from the side pipe portion 5 into the main pipe portion 3 is guided to the drainage support portion 11 without killing the water force as much as possible after colliding with the drainage cutoff portion 9.

The lower end of the drainage support portion 11 (the end of the inclined downstream side X2) is located below the lower end of the side pipe portion 5 (separation distance H1) and above the pipe bottom of the main pipe portion 3 (separation distance H2). ) (Especially see FIGS. 3 and 4). As a result, the sewage that has flowed from the side pipe portion 5 into the main pipe portion 3 can be more smoothly guided to the downstream side X2. Further, since the vicinity of the bottom of the main pipe portion 3 is not blocked by the drainage support portion 11, the sewage flowing from the upstream side X1 to the downstream side X2 in the main pipe portion 3 is not blocked and can be drained smoothly. .. Further, since the heavy solid matter travels on the bottom of the pipe, a course can be surely secured.

When the inside of the main pipe portion 3 is viewed from the front in the direction X, the tip position of the drainage guide portion 7 composed of the drainage cutoff portion 9 and the drainage support portion 11 (the inner end portion of the main pipe portion 3 in the drainage guide portion 7). ) Is substantially the same as the cross-section center line 23 of the main pipe portion 3, or protrudes beyond the cross-section center line 23 (protrusion amount W1) (particularly, see FIGS. 3 and 5 (b)).

As a result, the tip position of the drainage guide portion 7 protrudes from the merging port into the main pipe portion 3 by an appropriate amount, so that solid matter that is about to flow into the main pipe portion 3 from the side pipe portion 5 is locked to the drainage guide portion 7. It is possible to smoothly flow into the main pipe portion 3 without clogging in the vicinity of the confluence and guide it to the downstream side X2. Further, even when the amount of sewage flowing into the main pipe portion 3 from the side pipe portion 5 becomes large, the sewage can be smoothly drained without staying in the vicinity of the confluence.

When the side pipe portion 5 is viewed from the inside of the main pipe portion 3 in the front direction Y, the end portion of the downstream side X2 of the drainage guide portion 7 is the downstream side X2 from the inner right wall (merging port right wall) of the side pipe portion 5. It is desirable that the position is W2 (especially see FIG. 4). As a result, the sewage flowing from the side pipe portion 5 into the main pipe portion 3 can be guided to the long-distance downstream side X2.

When the inspection port 15 is viewed in a plan view from above to below the main pipe portion 3, a part of the drainage guide portion 7 can be visually recognized from the inspection port 15 (a state in which a part of the drainage guide portion 7 overlaps the inspection port 15). It is desirable that it is configured in such a manner (particularly, see FIG. 5 (a)). As a result, it is possible to easily visually check for foreign matter clogging such as solid matter in the vicinity of the drainage guide portion 7 from the inspection port 15 and insert a maintenance jig, so that maintenance can be easily performed.

When the inside of the main pipe portion 3 is viewed from the inside of the side pipe portion 5 in the front direction Y, the end portion of the drainage guide portion 7 (the tip side protruding into the main pipe portion 3) is inclined toward the downstream side X2 of the main pipe portion 3. It is desirable that it be formed so as to (particularly see FIG. 6). As a result, even if a large amount of sewage flows from the side pipe portion 5 into the main pipe portion 3, the upper side (strictly speaking, the upper left side in the above front view) is opened, so that the drainage guide portion 7 becomes the side pipe portion 5. The sewage flowing into the main pipe portion 3 from the main pipe portion 3 can be guided to the downstream side X2 of the main pipe portion 3 without stagnation.

Further, when a heavy solid matter flows from the side pipe portion 5 into the main pipe portion 3, the solid matter moves toward the downstream side X2 of the main pipe portion 3 along the shape of the drainage guide portion 7 because the solid matter moves at the bottom of the pipe. It can be guided diagonally downward. The end of the drainage guide portion 7 (the tip side protruding into the main pipe portion 3) does not have to be formed in a straight line, and the upper left side may be opened in the front view.

As shown in FIG. 6, in a state where the inside of the main pipe portion 3 is viewed from the inside of the side pipe portion 5 in the front direction Y, a vertical straight line (direction Z) from the center point of the confluence (boundary between the main pipe portion 3 and the side pipe portion 5). ) And a horizontal line (direction X) are provided to virtually partition (upper left, upper right, lower left and lower right), and the drainage guide 7 overlaps the entire lower right section (in other words, in the above front view). It is desirable that the drainage guide 7 overlaps with the entire lower right section.)

Usually, for example, the solid matter contained in the toilet drainage is often larger than half the diameter of the side pipe portion 5, and the heavy solid matter advances near the bottom of the side pipe portion 5, so that the above configuration is adopted. For example, when the solid matter flows from the side pipe portion 5 into the main pipe portion 3, it comes into contact with the lower right side of the drainage guide portion 7 and the traveling direction can be changed to the downstream side X2 of the main pipe portion 3 (in the Y direction). Do not go straight).

The shape of the edge of the downstream side X2 of the drainage support portion 11 is oblique to the pipe axis (center line of the direction X) of the main pipe portion 3 in a state where the pipe bottom is viewed in a plan view from the inside of the main pipe portion 3 in the direction Z. It is desirable that the end edge formed in and facing the side pipe portion 5 side is connected to the inner side wall of the main pipe portion 3 (particularly see FIG. 5 (b)). As a result, the drainage guide portion 7 is widely opened with respect to the downstream side X2 of the main pipe portion 3, and it is possible to prevent clogging of solid matter while appropriately guiding sewage.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to these embodiments and is not limited to the spirit and teaching of the claims. There are improved and modified examples of. It is easily understood by those skilled in the art that all such improvements and modifications are included in the technical scope of the present invention.

3. 3. Other Structure of Drainage Guide The Drainage Guide may have the same mode as the modified examples shown in FIGS. 7 (a) and 7 (b). 7 (a) and 7 (b) are views showing the structure of the drainage guide portion 107 having another aspect, and FIG. 7 (a) shows the other drainage guide portion 107 downward from the inside of the main pipe portion 3. 7 (b) is a front view of the other drainage guide portion 107 as viewed from the downstream side X2 to the upstream side X1 inside the main pipe portion 3.

As shown in FIGS. 7A and 7B, the drainage guide portion 107 completely differs from the first drainage cutoff portion 109a, the second drainage cutoff portion 109b, and the drainage support portion 111 that constitute the drainage guide portion 107. It was formed in. The first drainage cutoff portion 109a protrudes (direction Y) from the confluence into the main pipe portion 3 in the vicinity of the edge of the upstream side X1 of the confluence of the side pipe portion 5 and the main pipe portion 3, and is in the direction of the main pipe portion 3. It is a wall-shaped portion that rises substantially vertically with respect to X and rises in the direction Z, and forces the flow direction of the sewage flowing from the side pipe portion 5 to the main pipe portion 3 so as not to face the upstream side X1.

Further, the second drainage cutoff portion 109b is connected to the end edge on the direction Y side of the first drainage cutoff portion 109a described above and the drainage support portion 111 described later, and joins the side pipe portion 5 and the main pipe portion 3. It is a wall-shaped portion facing the mouth (opposing the direction Y), and prevents the sewage flowing from the side pipe portion 5 from going straight in the direction Y and flowing into the main pipe portion 3.

The drainage support portion 111 projects (direction Y) from the confluence into the main pipe portion 3 in the vicinity of the lower edge of the confluence of the side pipe portion 5 and the main pipe portion 3, and extends downward in the direction Z and to the downstream side X2. It is a floor-like part formed so as to incline toward. The edge of the upstream side X1 of the drainage support portion 111 is connected to the lower edge of the first drainage cutoff portion 109a in the direction Z, and the edge of the drainage support portion 111 in the direction Y is connected to the second drainage cutoff portion 109b. It is connected to the lower edge in the direction Z of.

The arrangement angles of the first drainage cutoff section 109a, the second drainage cutoff section 109b, and the drainage support section 111 constituting the drainage guide section 107 do not necessarily have to follow FIGS. 7 (a) and 7 (b). Needless to say, the mode may be appropriately changed according to the situation.

The pipe joint 1 of the present embodiment guides the sewage flowing from the side pipe portion to the main pipe portion to the downstream side of the main pipe portion, and preferably improves the drainage property of the drainage header.

1 Pipe joint 3 Main pipe part 5 Side pipe part 7 Drainage guide part 9 Drainage cutoff part 11 Drainage support part 13 Inclined surface 15 Inspection port 17 First connection part 19 Second connection part 21 Third connection part 23 Section center line 107 Drainage guidance Part 109a First drainage cutoff part 109b Second drainage cutoff part 111 Drainage support part 1001 Drainage header 1003a Drainage main pipe connection part 1003b Drainage main pipe connection part W1 Overhang
H1 separation distance
H2 separation distance

Claims (4)

It is a pipe joint for connecting the pipe connected to the drainage facility on the upstream side.
A pipe joint main body including a main pipe portion arranged in the lateral direction and a side pipe portion provided on the side of the main pipe portion, and
It is provided integrally with the pipe joint main body, and is configured to include a drainage guide portion that guides sewage flowing from the side pipe portion to the downstream side of the main pipe portion.
The drainage guide section
A drainage cutoff portion that prevents the inflow of sewage from the confluence where the main pipe portion and the side pipe portion meet to the upstream side of the main pipe portion and in the straight direction of the side pipe portion.
Inside the main pipe portion, a drainage support portion that supports the sewage flowing in from the confluence from below and guides the water to the downstream side of the main pipe portion is provided.
The upper part of the drainage support is open.
The drainage guide portion is provided so as to be separated from the pipe bottom of the main pipe portion.
A pipe fitting that features. The drainage support portion includes an inclined surface that inclines downward toward the downstream side of the main pipe portion.
The downstream end edge of the drainage support portion is located below the lower end of the side pipe portion.
The pipe fitting according to claim 1. The main section is provided with an inspection port at the top and has an inspection port.
In a plan view, the inspection port and at least a part of the drainage guide portion overlap.
The pipe fitting according to claim 1 or 2. When the drainage guide portion is viewed from the upstream side in the pipe axis direction of the side pipe portion , the end portion of the drainage guide portion is formed diagonally toward the downstream side of the main pipe portion.
The pipe fitting according to any one of claims 1 to 3.

Images