JP6273060B1 - Drainage mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage mechanism for discharging contents in a bowl of a flush toilet together with drainage and preventing the contents from being clogged even with a small amount of drainage at a connection portion between pipes. A drainage mechanism for discharging the contents in the bowl of the flush toilet (22) together with drainage, one pipe (24) having one end connected to the drainage port of the flush toilet (22), and a side surface thereof Another pipe (26) connected at a connecting portion so that the other end of the one pipe (24) joins, and at the connecting portion, the first pipe (24) and the other pipe ( When the height of the bottom part of 26) is equivalent, the height of the bottom part of said 1 pipe (24) and said other pipe (26) is added to both said 1 pipe (24) and said other pipe (26). If the lengths are different, the one pipe (24) and the other pipe (26) Low pipe ones bottom step part (32, 34) provided on the upstream side of the connecting portion, the step portion, the upstream side is higher than the downstream side. [Selection] Figure 2

Description

  The present invention relates to a drainage mechanism from a flush toilet.

  In flush toilets, contents such as toilet paper (paper) and filth are allowed to flow from the drainage outlet to the piping together with water accumulated in the toilet bowl. At present, water-saving toilets with reduced drainage are becoming mainstream, and when the amount of water flowing is reduced, the contents such as paper and filth are likely to be clogged. Therefore, a piping connection structure having a mechanism for preventing paper and dirt from being clogged in a drainage mechanism from a flush toilet has been devised (see, for example, Patent Document 1).

JP 2017-82903 A

  In the invention described in Patent Document 1, in the connecting portion where the horizontal pipe connected to the drainage port of the flush toilet is connected to the other pipe in a T-shape, the inner diameter on the downstream side of the other pipe on the upstream side Is getting bigger. With this structure, it is possible to prevent dirt and the like from being caught by a step in the pipe. However, the height of the water surface of the drainage is lowered, and there is a risk that the contents may not flow in contact with the bottom of the pipe at the connection portion.

  The present invention is a drainage mechanism that solves the above problems and drains the contents in the bowl of the flush toilet together with drainage, and does not clog the contents even with a small amount of drainage at the connection part between the pipes. The purpose is to provide a mechanism.

In order to solve the above-described problem, a drainage mechanism according to one embodiment of the present invention includes:
A drainage mechanism for discharging the contents in the bowl of the flush toilet together with the drainage,
1 pipe with one end connected to the drain of the flush toilet;
Other pipes connected at the connecting portion so that the other end of the one pipe joins to the side surface;
With
The one pipe includes a flow channel that flows from the drain port on the upstream side to the connection portion on the downstream side, and the other pipe includes a flow channel that flows from the upstream side to the downstream side through the connection portion,
In the connection portion, when the heights of the bottoms of the one pipe and the other pipe are equal, the heights of the bottoms of the first pipe and the other pipe are both in the first pipe and the other pipe. If the length is different, a stepped portion is provided on the upstream side of the connecting portion in the lower piping of the one piping and the other piping,
The stepped portion is higher on the upstream side than on the downstream side.

  According to the present invention, it is possible to provide a drainage mechanism that discharges the contents in the bowl of the flush toilet together with the drainage, and does not clog the contents even with a small amount of drainage at the connection portion between the pipes. .

It is the schematic of a flush toilet and piping connected to it. It is explanatory drawing of the drainage mechanism which concerns on Embodiment 1 of this invention. It is a side view which used S socket for the joint of the present invention. It is a side view which used the 22.5 degree elbow for the joint of this invention. It is a figure using the Y-shaped joint with a level | step difference which integrated the level | step-difference part and the connection part to the joint of this invention. It is the figure which used the Y-shaped joint with a level difference with a flange which made the level difference part and the connection part integrated in the joint of the present invention. It is explanatory drawing of the drainage mechanism which concerns on Embodiment 2 of this invention. It is explanatory drawing of the drainage mechanism which concerns on Embodiment 3 of this invention. It is piping arrangement | positioning provided with the drainage mechanism of this invention. It is explanatory drawing of the conventional drainage mechanism. 1 is an overview diagram of a piping work of Example 1. FIG.

  Hereinafter, various embodiments for carrying out the present invention will be described with reference to the drawings. In the drawings, corresponding members having the same functions are denoted by the same reference numerals. In consideration of ease of explanation or understanding of the main points, the embodiments are shown separately for convenience, but partial replacement or combination of configurations shown in different embodiments is possible. In the second and subsequent embodiments, description of matters common to the first embodiment will be omitted, and only different points will be described. In particular, the same operation and effect of the same configuration will not be sequentially described for each embodiment.

  FIG. 1 shows a schematic diagram of a flush toilet according to the present invention and piping connected thereto. Examples of flush toilets include water-saving toilets with a single drainage volume of 6L, 5L, 4.8L, or 3.8L. However, the present invention is not limited to this, and the present invention can be applied to flush toilets with other arbitrary amounts of drainage.

  The flush toilet 12 includes a bowl (not shown), and is connected to a branch pipe 14 at a drain port (not shown). The branch pipe 14 is a combination of a vertical pipe and a horizontal pipe, and is arranged so that the waste water flows downward from above by gravity. The branch pipe 14 is connected to a main pipe 16 extending in the lateral direction. More specifically, the branch pipe 14 is connected at the connection portion 18 so as to form a three-way on the side surface of the main pipe 16.

  The connecting portion 18 is a place where the branch pipe 14 and the main pipe 16 are connected, and the branch pipe 14 side is connected from the upstream side of the main pipe 16 of the branch pipe 14 to the downstream side of the main pipe 16. The main pipe 16 side is from the upstream side to the downstream side of the hole opened for connecting the branch pipe 14, and corresponds to the Y-shaped joint in FIG.

  The pipe-to-pipe connection 18 is a Y-shaped joint. That is, the upstream side of the main pipe 16 and the branch pipe 14 are connected so as to form an acute angle at the connection portion. With the connecting portion along such a flow, contents such as paper and filth can be flowed without being caught by the connecting portion.

  A step portion 20 is provided on the upstream side of the connection portion 18 of the main pipe 16. The step portion 20 can be formed by using a so-called S socket that is an approximately S-shaped pipe joint, or can be formed integrally with a Y-shaped joint that forms a connection portion.

(Embodiment 1)
FIG. 2 is a diagram illustrating the drainage mechanism according to the first embodiment of the present invention. Fig.2 (a) shows the place where the piping 24 (1 piping) from the flush toilet 22 is connected to the side surface of the piping 26 (other piping). Contents 28 such as paper and filth, and waste water 30 such as sewage from the flush toilet 22 flow into the pipe 26 (other pipes) through the pipe 24 (1 pipe) by gravity. The pipes 24 to 26 are used as flow paths. In this embodiment, the pipe 24 (one pipe) arranged in the lateral direction in the vicinity of the junction is connected to the pipe 26 (other pipe) arranged in the lateral direction, and the inner diameter of the pipe 24 (one pipe) is The case where the inner diameters of the pipes 26 are substantially the same is shown.

  Here, the pipe 24 and the pipe 26 in FIG. 2 correspond to the branch pipe 14 and the main pipe 16 in FIG. 1. Since the pipe 24 hits the pipe 26, the pipe 24 and the pipe 26 form a three-way. Although a three-way pipe is shown here, the number of pipes to be connected may be increased to be four or more.

  FIG. 2B shows an AA cross section of FIG. FIG. 2B is a cross-sectional view of the pipe 26 (another pipe) as seen from the side, and is a schematic diagram illustrating an enlarged joining point with the pipe 24 (the pipe of 1). The pipe 26 is a horizontal pipe slightly inclined from the horizontal direction, and has a flow path in which the right side in the drawing is the upstream side and the left side in the drawing is the downstream side.

  In FIG. 2 (a), the connecting portion that is the joining point is a range from the upstream side to the downstream side of the hole opened in the pipe 26, and the center position of the hole is the connection center. The same applies to FIG. 6, FIG. 7 and FIG.

  Since the drainage combined at the connecting portion has a small inclination, it flows into the pipe 26 (other pipes) from the pipe 24 (1 pipe), and flows horizontally in the pipe 26 in both the upstream side and the downstream side. spread.

  In the present invention, the drainage 30 spreading in the horizontal direction collides with the stepped portion 32 on the upstream side. In FIG. 2A, the stepped portion 32 is a portion that is greatly inclined from the substantially horizontal direction of the pipe 26. That is, from the upstream horizontal end (slightly inclined) to the downstream horizontal end (slightly inclined) end. The same applies to FIG. 2C, FIG. 6 and FIG.

  At the stepped portion 32, the drainage 30 does not go further upstream. Therefore, the drainage surface rises. The contents 28 such as paper can float and flow in the drainage as the drainage surface rises. Thus, in the present invention, the contents 28 can flow through the pipe 26 without clogging.

  On the other hand, the figure explaining the conventional drainage mechanism is shown in FIG. FIG. 9A shows that the pipe 44 from the flush toilet 42 is connected to the side surface of the pipe 46. The drainage 50 spreads horizontally in the pipe 46.

  FIG. 9B shows a GG cross section of FIG. FIG. 9B is a cross-sectional view of the pipe 46 as viewed from the side, and is a schematic diagram showing an enlargement of the junction with the pipe 44. The pipe 46 is a horizontal pipe slightly inclined from the horizontal direction, with the right side of the drawing being the upstream side and the left side of the drawing being the downstream side.

  Since the piping 46 is substantially horizontal, the drainage 50 spreads upstream of the piping 44 and upstream of the piping 46. In the piping 46, the stepped portion is not on the upstream side, so that the drainage surface is lowered, and the contents 48 are left on the bottom surface of the piping 46. Then, the contents 48 cannot float and flow in the drainage, and clogging occurs.

  Unlike the conventional drainage mechanism as described above, the present invention can flow through the piping without floating the drainage and clogging the contents.

  The height t1 of the step portion 32 is the difference between the height of the bottom surface on the upstream side of the step portion 32 and the height of the bottom surface on the downstream side. Similarly, t2 to t5 shown in FIGS. 2C, 6 and 7 are the difference between the height of the bottom surface on the upstream side and the height of the bottom surface on the downstream side. In order to secure the height of the water surface of the drainage 30 so that the contents 28 from the flush toilet 22 are not clogged with respect to the bottom of the pipe, the height t1 is required to be higher than a predetermined dimension. Or the height which the drainage 30 which flowed does not get over the level | step-difference part 32 is required. That is, it is preferable that it is higher than the height of the flowing drainage surface and liquid level. The height t1 of the step portion is preferably 5 mm or more, and more preferably 10 mm or more.

  The piping is usually installed in the space above the ceiling of the lower floor below the flush toilet installation floor of the building. Therefore, when the height of the stepped portion 32 is increased, a large amount of the space is required. From this viewpoint, the height t1 of the stepped portion is preferably a small value. The height t1 of the stepped portion 32 is 340 mm or less, preferably 165 mm or less. Therefore, the height t1 of the stepped portion 32 is 5 mm to 340 mm, preferably 10 mm to 165 mm.

  The distance L1 is the distance from the horizontal end portion on the upstream side to the connection center, and is the distance between the stepped portion 32 and the connection center. Here, L2 to L5 shown in FIG. 2C, FIG. 6 and FIG. 7 are also the distances from the upstream horizontal end portion to the connection center. When the distance L1 increases, the drainage surface does not rise even if drainage flows upstream, and the contents 28 from the flush toilet 22 are clogged with respect to the bottom of the pipe. Further, when the distance L1 becomes negative, the effect of the step is reduced. Therefore, the distance L1 is preferably 0 mm to 620 mm.

  In the present embodiment, the pipe 24 and the pipe 26 are the same or substantially the same size, and the heights of the center positions of the pipe 24 and the pipe 26 are the same or substantially the same. Therefore, the height of the bottom portion at the connection portion between the pipe 24 and the pipe 26 is the same or substantially the same.

  FIG. 2C shows a BB cross section of FIG. FIG.2 (c) is sectional drawing which looked at the piping 24 (1 piping) from the side surface direction, and is the schematic diagram which expanded and showed the confluence | merging point with the piping 26 (other piping). The right side of the drawing is the upstream side and the left side of the drawing is the downstream side, and the pipe 24 abuts against the pipe 26. The pipe 26 is arranged from the front side to the back side of the drawing. Since the drainage 30 may flow backward in the pipe 24 when the heights of the bottom parts are the same or substantially the same, the step part 34 is provided in the same manner as the pipe 26. Similarly, when a pipe is further connected such as a four-way, if the bottom part has the same or substantially the same height, a step part is provided in each pipe upstream of the connection part. The step portions 32 and 34 may have the same shape or different shapes. Here, an example of the same shape is shown.

  When the stepped portion 32 and the stepped portion 34 have different shapes, the height t2 of the stepped portion 34 is preferably in the range of 10 mm to 165 mm, similarly to t1. Further, the distance L2 between the stepped portion 34 and the connection center is preferably in the range of 23 mm to 620 mm, similarly to L1.

  FIG. 3 shows a side view using an S socket in the joint of the present invention. By using an S socket, the number of parts can be reduced, and the labor of assembly can be saved.

  In the cross-sectional view of FIG. 3, drainage flows from the upstream side on the right side of the drawing to the downstream side on the left side of the drawing. By using an S socket, a stepped portion is generated when going back from the downstream side to the upstream side. In a pipe having a nominal diameter of JIS (for example, JIS G 3452, the same applies hereinafter) of 100A, a step of about 57 mm is generated between the bottom on the upstream side and the bottom on the downstream side. This size has an effect that the drainage does not flow back to the upstream side, and has an effect that the ceiling space is not compressed.

  Moreover, the thickness of piping does not change by the upstream side and downstream side of a level | step-difference part by using S socket. Therefore, the thickness of the pipe can be sufficiently secured with respect to the flow amount.

  The S socket has two curved surfaces. An upstream curved surface 72 with the center of curvature upstream, and a downstream curved surface 74 with the center of curvature downstream. By doing in this way, it can flow without stopping the flow from the upstream, and the distance that filth such as paper flows can be extended.

  FIG. 4 shows a side view using a 22.5 ° elbow in the joint of the present invention. Two elbows are connected, and in the cross-sectional view of FIG. 4, drainage flows from the upstream side on the right side of the drawing to the downstream side on the left side of the drawing, and the outlet and the inlet are parallel.

  By using a joint in which two 22.5 ° elbows are connected, a stepped portion is produced when going back from the downstream side to the upstream side. In the 100A pipe, a height difference of about 57 mm is generated in the same manner as the S socket. Therefore, there is an effect that the drainage does not flow backward to the upstream side.

  Further, by using a joint in which two 22.5 ° elbows are connected, the pipe thickness does not change between the upstream side and the downstream side of the step. Therefore, the thickness of the pipe can be sufficiently secured with respect to the flow amount.

  Furthermore, two curved surfaces are provided. An upstream curved surface 76 with the center of curvature on the upstream side and a downstream curved surface 78 with the center of curvature on the downstream side. By doing in this way, it can flow without stopping the flow from the upstream, and the distance that filth such as paper flows can be extended.

  An example of connecting two 22.5 ° elbows was shown. However, even if two 45 ° elbows are connected in series or two 90 ° elbows are connected, the outlet and inlet are parallel and the pipe thickness is parallel. Does not change, a stepped portion is formed, and two curved surfaces are provided, so that they can be used in the same manner.

  FIG. 5A shows a diagram using a stepped Y-shaped joint in which a stepped portion and a connecting portion are integrated with the joint of the present invention. FIG. 5A (a) is a schematic perspective view of a stepped Y-shaped joint in which a stepped portion and a connecting portion are integrated. It is the shape which just connected S socket and Y-shaped joint. The right side of the drawing is the upstream side, and the left side of the drawing is the downstream side. A flow path is formed from the upstream sides 80 and 82 toward the downstream side 84. The outlet and entrance are parallel and the thickness of the pipe does not change. Further, step portions are formed from the downstream side 84 toward the upstream sides 80 and 82. Due to this stepped portion, there is no backflow upstream at the connecting portion.

  FIG. 5A (b) is a side view of a stepped Y-shaped joint in which a stepped portion and a connecting portion are integrated. The right side of the drawing is the upstream side, and the left side of the drawing is the downstream side. Two curved surfaces are provided from the upstream side 80 toward the downstream side 84. An upstream curved surface 86 with the center of curvature upstream, and a downstream curved surface 88 with the center of curvature downstream. By doing so, it is possible to flow without stopping the flow from the upstream, and it is possible to extend the distance through which contents such as paper and filth flow.

  FIG. 5A (c) is a top view of a stepped Y-shaped joint in which a stepped portion and a connecting portion are integrated. The right side of the drawing is the upstream side, and the left side of the drawing is the downstream side. It can be seen that the upstream side 80 and 82 merge to form a flow path to the downstream side 84. As shown in FIG. 5A (c), the stepped Y-shaped joint that integrates the stepped portion and the connecting portion starts from the vicinity of the connection center, so the distance between the stepped portion and the connection center is shortened. can do.

  FIG. 5B shows a view using a stepped Y-shaped joint with a flange in which a stepped portion and a connecting portion are integrated with the joint of the present invention. FIG. 5B (a) is an overview perspective view, FIG. 5B (b) is a side view, and FIG. 5B (c) is a top view. 5A is the same as the stepped Y-shaped joint in which the stepped portion and the connecting portion are integrated, and the stepped portion and the connecting portion are integrated, but is different in that the flange is attached. Is possible.

  Also, S socket, Y-shaped joint with a step that integrates the step part and the connection part, and a Y-shaped joint with a step that integrates the step part and the connection part (in addition, the step part and the connection part are integrated) As the member constituting the joint), vinyl chloride or a metal pipe with a vinyl chloride lining can be formed seamlessly, which is preferable.

(Embodiment 2)
FIG. 6 is a view for explaining a drainage mechanism according to Embodiment 2 of the present invention. FIG. 6 (a) also shows that the pipe 24 (1 pipe) from the flush toilet 22 is connected to the side surface of the pipe 26 (other pipe), as in FIG. 2 (a). 6A is the same in that the pipe 24 (one pipe) arranged in the lateral direction in the vicinity of the merging point is connected to the pipe 26 (other pipe) arranged in the lateral direction. However, the second embodiment is different from the first embodiment shown in FIG. 2A in that the inner diameter of the pipe 24 (1 pipe) is smaller than the inner diameter of the pipe 26 (other pipe).

  As shown in FIG. 6A, the contents 28 such as paper and the drainage 30 such as sewage flow from the flush toilet 22 through the pipe 24 (1 pipe) into the pipe 26 (other pipe). Since the pipe 24 hits the pipe 26, the pipe 24 and the pipe 26 form a three-way.

  FIG. 6B shows a CC cross section. FIG. 6B is a cross-sectional view of the pipe 26 (another pipe) as viewed from the side, and is a schematic diagram illustrating an enlarged junction point with the pipe 24 (the pipe of 1). Since the step portion 36 is provided in the same manner as in the first embodiment, further detailed description is omitted. The height t3 of the stepped portion 36 and the distance L3 from the bottom on the upstream side to the center position of the connecting portion are given under the same conditions as in the first embodiment.

  FIG. 6C shows a DD cross section. FIG. 6C is a cross-sectional view of the pipe 24 as viewed from the side, and is a schematic diagram showing an enlargement of the junction with the pipe 26. The pipe 24 is a horizontal pipe that is slightly inclined from the horizontal direction. The pipe 24 abuts the pipe 26 on the upstream side on the right side of the drawing and the downstream side on the left side of the drawing. A flow path is arranged in the pipe 26 from the front side to the back side.

  Since the inner diameter of the pipe 24 is smaller than the inner diameter of the pipe 26, a step is generated at the connection portion between the pipe 24 and the pipe 26. By this step, the drainage surface rises and the contents 28 can float and flow in the drainage. Therefore, it is not necessary to provide a step portion in the pipe 24. Since it is not necessary to provide a step portion in the pipe 24, it is efficient. Further, since the piping 24 has no stepped portion, the degree of freedom in routing the piping 24 is increased in consideration of the ceiling space.

  The height of the step may be a height at which the content 28 floats on the drainage. Therefore, it does not have to be as high as the step portion t3. Examples where the inner diameters of the pipes are different are, for example, 100A and 75A pipes. In this case, the height of the step is about 13 mm.

  In the present embodiment, an example in which the center of the pipe 24 and the center of the pipe 26 are aligned is shown, but the present invention is not limited to this, and the heights of the bottoms of the pipe 24 and the pipe 26 are different even if the centers are not aligned. It only has to be. In particular, it is preferable that the bottom of the pipe 26 is lower than the bottom of the pipe 24.

  Further, in the present embodiment, the case of a three-way crossing is shown, but in the case of a four-way or higher as well, if the bottoms of the connected pipes have different heights, the bottom has a low height. Steps are provided. If there are a plurality of bottom parts having the same height, a step is provided for each.

(Embodiment 3)
FIG. 7 is a diagram illustrating a drainage mechanism according to the third embodiment. FIG. 7 (a) also shows that the pipe 24 (1 pipe) from the flush toilet 22 is connected to the side surface of the pipe 26 (other pipe), as in FIG. 2 (a). 7A is the same in that the pipe 24 (one pipe) arranged in the horizontal pipe near the junction is connected to the pipe 26 (other pipe) arranged in the horizontal direction. However, it differs from FIG. 2A in that the inner diameter of the pipe 26 (other pipe) is narrower on the upstream side. As an example of the case where the inner diameter of the pipe 26 (other pipe) is narrow on the upstream side, there is a reducer connection.

  The contents 28 such as paper and the waste water 30 such as sewage flow into the pipe 26 (other pipe) from the pipe 24 (1 pipe). Since the pipe 26 hits the pipe 24, the pipe 24 and the pipe 26 form a three-way.

  FIG. 7B shows an EE cross section. FIG. 7B is a cross-sectional view of the pipe 26 (other pipe) as viewed from the side, and is a schematic diagram showing an enlargement of the junction with the pipe 24 (pipe 1). The piping 26 has a flow path in which the right side of the drawing is the upstream side and the left side of the drawing is the downstream side. The drainage 30 flowing into the pipe 26 collides with the stepped portion 38 and the drainage surface rises. Therefore, the contents 28 can float and flow in the drainage.

  That is, when the pipe diameter of the pipe 26 is narrower on the upstream side, the same effect as forming the stepped portion there is obtained. Therefore, it is not necessary to further provide a step portion in the pipe 26. Since it is not necessary to provide a step portion in the pipe 26, it is efficient. The height t4 of the stepped portion 38 and the distance L4 from the upstream horizontal end portion to the connection center are given under the same conditions as the stepped portion 32.

  FIG. 7C shows an FF cross section. FIG.7 (c) is sectional drawing which looked at the piping 24 (1 piping) from the side surface, and is the schematic diagram which expanded and showed the confluence | merging point with the piping 26 (other piping). Since the stepped portion 40 is provided in the same manner as in the first embodiment, further detailed description is omitted. The height t5 of the stepped portion 40 and the distance L5 from the upstream horizontal end portion to the connection center are given under the same conditions as in the first embodiment.

  In the present embodiment, the pipe diameter of the pipe 24 is the same as that of the connection portion, and the pipe diameter of the pipe 26 is small on the upstream side, but the pipe diameter of the pipe 24 is small on the upstream side, When the pipe diameter of the pipe 26 is not different from the connection part, the step part is not provided in the pipe 24 but the step part is provided in the pipe 26.

  In the present embodiment, the case of a three-way road is shown. However, in the case of a four-way or higher road, a step portion is not provided for a pipe having a small pipe diameter, and the pipe and the pipe diameter are equal. A step portion may be provided.

  The present invention can improve the flow of drainage and prevent clogging of the contents by providing a step portion on the upstream side of the connection portion between the pipes. This is particularly effective in piping for installing water-saving and ultra-water-saving toilets.

In addition, when forming a step with an upstream curved surface with the center of curvature upstream and a downstream curved surface with the center of curvature downstream, such as S-socket, connect a small diameter pipe. Compared to the case where a step is formed using a reducer, the following advantages are obtained.
(1) Even if the pipe diameter is the same, an effective step with good drainage flow can be formed, so that the degree of freedom in designing the piping is increased.
(2) When connecting pipes with a small diameter or forming a step using a reducer, the pipes are usually connected with the center line of the pipe aligned, so half the height dimension (diameter difference) increases. Only the dimension can be used for the step. On the other hand, when the step is formed by the S socket or the like, all of the increased height can be used for the step, so that a piping structure can be obtained with a small height and without clogging the contents.

(Piping structure with drainage mechanism of the present invention)
FIG. 8 is a top view showing an example of a piping structure provided with the drainage mechanism of the present invention. A plurality of flush toilets 52 and a plurality of branch pipes 54 connected to each flush toilet 52 are arranged. The plurality of branch pipes 54 merge with the main pipe 56 and are aggregated. Further, the main pipe 56 joins the sewage main pipe 58 extending over the building and is collected.

  Contents such as paper and other filth are merged from the flush toilet 52 through the branch pipe 54 to the main pipe 56 and aggregated, and further merged into the sewage main pipe 58 and aggregated.

  The branch pipe 54 and the main pipe 56 correspond to the pipe 24 and the pipe 26 in FIG. The main pipe 56 and the sewage main pipe 58 correspond to the pipe 24 and the pipe 26 in FIG.

  The branch pipe 54 has a nominal diameter of 65A to 100A according to JIS standards, the main pipe 56 has a diameter of 65A to 125A, and the sewage main pipe 58 has a diameter of 75A to 150A. .

  The branch pipe 54, the main pipe 56, and the sewage main pipe 58 each have a gradient of 1% to 2%. By providing such a gradient, contents such as paper and filth flow naturally from the upstream side to the downstream side by gravity.

  The connection portion between the pipes is a Y-shaped joint 60. That is, the upstream side of the main pipe 56 and the branch pipe 54, and the upstream side of the sewage main pipe 58 and the main pipe 56 are connected so as to form an acute angle at the connection portion. By doing so, the contents are not caught in the connection portion.

  The step portion is indicated by reference numeral 62. The diameters of the main pipe 56 and the sewage main pipe 58 are both the same as 100A and are connected with the same center. Therefore, since the bottoms of the main pipe 56 and the sewage main pipe 58 have the same height, the stepped part 62 is provided on both upstream sides of the connecting part.

  On the other hand, the diameters of the main pipe 56 and the branch pipe 54 are 100A and 75A, and are connected with their centers aligned. Therefore, since the height of the bottom of the main pipe 56 is lower than the height of the bottom of the branch pipe 54, the stepped portion 62 is provided on the upstream side of the main pipe 56 of the connection part. Is not provided with a stepped portion.

  In this embodiment, the branch pipe 54 and the main pipe 56 have different pipe diameters and correspond to the pipe 24 and the pipe 26 in FIG. 6, but the pipe diameters are the same and the pipe 24 and the pipe in FIG. 2 or FIG. 26 may be supported. Further, although the diameters of the main pipe 56 and the sewage main pipe 58 are equal and correspond to FIG. 2, the diameter of the pipe may be changed to correspond to FIG. 6 or FIG. Although not shown, when the branch pipe 54 and the sewage main pipe 58 are connected, they may correspond to the pipe 24 and the pipe 26 in FIG. 2, FIG. 6, or FIG. 7, respectively.

  If the amount of water is small, the drainage surface gradually becomes lower in the middle of the flow, and paper or the like gets stuck in the bottom of the pipe, and the contents such as paper and dirt flowing in the pipe stop in the middle. In this example, in order to investigate the effect of the rise of the drainage surface due to the provision of the stepped portion on the transport distance of the contents, water and paper (toilet paper) are poured into the pipe, and the distance through which the paper flows is examined. It was.

  FIG. 10 shows an overview of the piping work of Example 1. The transparent vinyl pipe 72 and the transparent vinyl pipe 74 were connected by a Y-shaped joint 80. The pipe 72 and the pipe 74 have the connection structure according to the second embodiment of the present invention. The pipe 72 has a diameter of 75A, and the pipe 74 has a diameter of 100A. Since the diameters of the pipe 72 and the pipe 74 are different, a step portion is generated. Further, an S socket 78 is provided on the upstream side of the Y-shaped joint 80 to form a stepped portion. The height difference of the stepped portion due to the S socket 78 is 57 mm.

  Next, the pipe 74 is connected to the transparent vinyl pipe 96 and the transparent vinyl pipe 98 with Y-shaped joints 84 and 88 simulating a tributary from a plurality of flush toilets. S sockets 82 and 86 are provided on the upstream side of the Y-shaped joints 84 and 88 to form step portions.

  Next, the pipe 74 is connected to the transparent vinyl pipe 76 by a Y-shaped joint 94. The pipe 74 and the pipe 76 have the connection structure according to the first embodiment of the present invention. The diameter of the pipe 76 is 100 A, and the diameter is the same as the pipe 74. Therefore, S sockets 90 and 92 are provided on the upstream side of the Y-shaped joint 94 to form a stepped portion. The height difference of the stepped portion due to the S sockets 90 and 92 is 57 mm.

  The end of the tube was capped 100, 102, 104. The gradient of the pipes 72, 74, and 76 was 1%. The distance from the flush toilet 70 to the Y-shaped joint 94 is about 6 m. An outlet was provided about 24 m downstream from the Y-shaped joint 94 while meandering through the 45 ° elbows 104, 106, 108, 110, 112, 114, 116, 118. Thus, what provided the level | step-difference part in the upstream of the connection part vicinity of another piping was set as the Example, and the thing which does not provide S socket 78,82,86,90,92 which is a level | step-difference part was made into the comparative example.

  From the flush toilet 70, water and paper (better living BL certification standard test method; 90 cm paper defined in single paper JIS P 4501 was folded in eight, and a stack of four substantially square sheets) were poured. Table 1 shows the amount of water and the flow distance of the example and the comparative example with a reference distance of 10 m indicating that clogging does not occur.

  As in the comparative example, it was found that when the amount of water decreases, the distance through which the paper flows becomes shorter. This is because the drainage surface becomes lower as the amount of drainage decreases. In addition, clogging occurs in the case of 4.8L. Thus, it can be seen that in a toilet called a water-saving type or a super-water-saving type with a drainage amount of 6 L or less (for example, 4.8 L or 3.8 L or less), contents such as paper and filth are likely to be clogged at the connecting portion.

  However, in the example, the distance through which the paper flows was increased with either amount of water, and 10 m as a guideline was able to flow. Therefore, the present invention is useful for carrying contents such as filth and paper of flush toilets, such as water-saving toilets and ultra-water-saving toilets, which have a small amount of drainage, without clogging them at the pipe connection.

  Although the embodiments and embodiments of the present invention have been described, the disclosed contents may vary in the details of the configuration, and combinations of elements and changes in the order of the embodiments, embodiments, etc. are claimed in the present invention. It can be realized without departing from the scope and spirit of the present invention.

Claims (11)

A drainage mechanism for discharging the contents in the bowl of the flush toilet together with the drainage,
1 pipe with one end connected to the drain of the flush toilet;
Other pipes connected at the connecting portion so that the other end of the one pipe joins to the side surface;
With
The one pipe includes a flow channel that flows from the drain port on the upstream side to the connection portion on the downstream side, and the other pipe includes a flow channel that flows from the upstream side to the downstream side through the connection portion,
In the connection portion, when the heights of the bottoms of the one pipe and the other pipe are equal, the heights of the bottoms of the first pipe and the other pipe are both in the first pipe and the other pipe. If the length is different, a stepped portion is provided on the upstream side of the connecting portion in the lower piping of the one piping and the other piping,
The step portion upstream side rather higher than the downstream side,
The step portion is formed by a stepped joint integrated with the connection portion,
The drainage mechanism characterized in that the opening of the joint is open only in the flow path .   The drainage mechanism according to claim 1, wherein the one pipe and the other pipe are connected so as to be aligned with each other.   3. The drainage mechanism according to claim 1, wherein a bottom portion on the upstream side of the step portion is 5 mm or more higher than a bottom portion on the downstream side of the step portion.   The drainage mechanism according to any one of claims 1 to 3, wherein a distance from an upstream end of the stepped portion to a center position of the connection portion is within 620 mm.   The said step part is equipped with the upstream curved surface which has a center of curvature upstream from the said step part, and the downstream curved surface which has a curvature center downstream from the said step part, The Claim 1 thru | or 4 characterized by the above-mentioned. The drainage mechanism according to any one of the above items. 6. The joint with a step in which the step portion is integrated with the connection portion is made of vinyl chloride or a metal pipe subjected to vinyl chloride lining, according to claim 1 . Drainage mechanism. The drainage mechanism according to any one of claims 1 to 6 , wherein drainage from another flush toilet flows from an upstream side of the other pipe. The drainage mechanism according to any one of claims 1 to 7 , wherein the one pipe and the other pipe upstream of the connection part are arranged at an acute angle in the connection part. The drainage mechanism according to any one of claims 1 to 8 , wherein the one pipe and the other pipe have a slope of 1% or more and 2% or less from a horizontal direction. The drainage mechanism according to any one of claims 1 to 9 , wherein the flush toilet is a water-saving toilet with a single drainage amount of 6L or less. The drainage mechanism according to any one of claims 1 to 10 , wherein an inner diameter of the one pipe and the other pipe is 65 mm or more and 150 mm or less.