JP2015068140A - Piping unit and piping construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arrange a blade member in piping at a suitable position however the position of drain water in a pipe and a curved pipe are arranged.SOLUTION: A piping unit includes a straight pipe member which has a flow passage formed vertically, and includes a straight pipe part for letting drain water flow down and a spiral blade member, and an elbow 4A which is connected to a downstream side of the straight pipe member and changes the flow passage of the drain water from a vertical direction to a horizontal direction. At a connection part between a connection socket and the elbow 4A, they are connected together in a non-fixed state, and positioning means is provided which can be freely positioned at an arbitrary rotation angle in a peripheral direction around the axis of the connection socket. The positioning means comprises a plurality of cut parts 44 which are formed at a receptacle 4a of the elbow 4A in a peripheral direction, and a projection which projects from an outer peripheral surface of the connection socket and engages a cut part 44.

Description

  The present invention relates to a piping unit and a piping construction method.

Conventionally, a building such as a detached house or a condominium is provided with a drainage piping structure such as a toilet or a bathroom on each floor as described in Patent Document 1.
As such a toilet piping structure, in the underfloor space, a straight pipe portion extending vertically downward from the toilet drain and a curved pipe connected to the lower end of the straight pipe portion are integrally bonded and fixed. A horizontal pipe extending in a substantially horizontal direction with a predetermined drainage gradient is connected to the downstream end of the bent pipe. Then, it is known that a spiral blade member is provided in the straight pipe portion in order to prevent negative pressure from being applied to the space upstream from the blocked portion when the flow path is blocked by drainage. ing.

JP 2003-342984 A

  However, in the conventional piping structure, when a toilet is newly installed or changed, the direction of the toilet and the position of the curved pipe connected to the horizontal pipe may change. Here, in a normal toilet, water flows to the front side in accordance with the direction of the toilet, so if the position of the bent pipe connected to the horizontal draw pipe changes, the drainage member is provided in the straight pipe section. There is a problem in that the function of the blade member cannot be fully exhibited.

  The present invention has been made in view of the above-described problems, and a piping unit and a piping capable of suitably arranging a blade member in a pipe regardless of the position of the drainage in the pipe and the arrangement of the curved pipe. The purpose is to provide a construction method.

  In order to achieve the above object, in the piping unit according to the present invention, the flow path is formed in the vertical direction, has a straight pipe portion for flowing down drainage, and has a straight pipe member provided with a spiral blade member, and the straight pipe member. A curved pipe connected to the downstream side of the pipe member and changing the flow path of the drainage from the vertical direction to the horizontal direction, and in the connecting portion between the straight pipe member and the curved pipe, the straight pipe member is Positioning means is provided which is connected to the curved pipe in a non-fixed state and can be positioned at an arbitrary rotation angle in the circumferential direction around the axis of the straight pipe member.

  Moreover, in the piping construction method according to the present invention, the flow path is formed in the vertical direction, and has a straight pipe portion that allows the drainage to flow down, and a straight pipe member that includes a spiral blade member, and a downstream of the straight pipe member. And a curved pipe that is connected to the side and changes the flow path of the drainage from the vertical direction to the horizontal direction, and is a piping construction method for a piping unit that is installed in an underfloor space below a flooring of a building, Connecting the curved pipe to a horizontal pipe extending in the horizontal direction in the underfloor space, placing the floor material after the curved pipe is installed, and passing the straight pipe member through the floor material. Connecting the upstream end of the curved pipe in a non-adhered state, and the straight pipe member is positioned by an arbitrary rotation angle in the circumferential direction around the axis, and the blade member Is positioned at a predetermined angle to the curved pipe It is characterized by being continued.

  In the present invention, the straight pipe member can be positioned with respect to the curved pipe at any rotation angle in the circumferential direction around the axis of the straight pipe member by the positioning means. Therefore, according to the position of the drainage flowing down in the straight pipe member and the position of the curved pipe, there is an advantage that the straight pipe member can be positioned and connected to the curved pipe so that the blade member is arranged at a suitable rotation angle. is there.

  Further, in the piping unit according to the present invention, the positioning means includes a plurality of cutout portions formed along the circumferential direction at one end portion of the straight pipe member and the curved pipe, and an outer peripheral surface at the other end. It preferably comprises a protrusion that protrudes further and engages with the notch.

  In this case, the other protrusion is selectively fitted into each of the plurality of cutout portions provided at predetermined intervals in the circumferential direction at either one end of the straight pipe member and the curved pipe. The other pipe can be positioned at an arbitrary rotation angle.

  In the piping unit according to the present invention, it is preferable that a positioning mark indicating a horizontal flow path side is provided at an upstream end portion of the bent pipe.

  By comprising in this way, the horizontal flow path direction of a curved pipe can be confirmed by visually observing the positioning mark of the said downstream piping arrange | positioned in underfloor space from the top of a flooring. Therefore, even when the upstream pipe connected to the downstream pipe is provided with a member for guiding the drainage direction such as a blade member, the position of the blade member can be positioned without mistake by matching the direction of the curved pipe. .

  According to the piping unit and the piping construction method of the present invention, there is an effect that the blade member in the pipe can be suitably arranged regardless of the position of the drainage in the pipe and the arrangement of the curved pipe.

It is a principal part longitudinal cross-sectional view which shows the state which installed the piping unit by embodiment of this invention in underfloor space. It is a perspective view which shows the structure of a straight pipe part. It is a partially transparent perspective view which shows the structure of a connection socket. It is a perspective view which shows the structure of an elbow. It is a perspective view which shows the connection state of a piping unit, Comprising: It is the figure which connected the connection socket to the elbow. It is a top view which shows the structure of the positioning mark provided in the elbow. (A)-(d) is a figure which shows the installation process of the piping unit of this Embodiment. It is the figure which looked at the state which connected the connection socket to the elbow from the top, (a) is the figure of the state where the spiral blade is not hitting the drainage, (b) is the figure of the state where the spiral blade is hitting the drainage is there. It is a top view for demonstrating the positioning method of a connection socket, Comprising: (a) is a figure of the state before positioning a spiral blade, (b) is a figure of the state after positioning a spiral blade.

  Hereinafter, a piping unit and a piping construction method according to an embodiment of the present invention will be described in detail based on the drawings.

The piping unit 1 of this Embodiment shown in FIG. 1 has taken the case of the drainage system applied to the drainage of toilets, such as a detached house.
As shown in FIG. 1, the toilet drainage system in which the piping unit 1 of the present embodiment is used is a toilet 6 installed on the flooring 5 and an underfloor space R between the flooring 5 and the foundation 7. The toilet pipe unit 1 is installed and connected to a horizontal pipe 8 extending in a substantially horizontal direction with a predetermined drainage gradient.

The toilet 6 to which the piping unit 1 of the present embodiment is applied includes a toilet main body 61 and a trap 62 for storing sealed water that blocks the space between the toilet main body 61 and the piping unit 1. Then, the toilet 6 is made to flow wash water (drainage) after its use, so that solids and the like present in the toilet body 61 flow together with the wash water and pass through the trap 62.
The trap 62 includes a valley-like turn portion 62a that curves in a valley shape, and a mountain-like turn portion 62b that curves in a mountain shape.

The piping unit 1 is disposed below the floor material 5 on which the toilet 6 is installed, and has a straight pipe portion 2 connected to an upper socket 63 attached to a trap 62 and a downstream end of the straight pipe portion 2. And a elbow (curved pipe) 4 connected to the downstream end of the connection socket 3. The straight pipe portion 2 and the connection socket 3 constitute a straight pipe member 10.
The horizontal drawing pipe 8 described above is connected to the elbow 4 and extends in the horizontal direction with a predetermined drainage gradient. Note that a downstream side of the horizontal pipe 8 is connected to a drainage basin (not shown) installed outside the foundation 7 via a drainage header (not shown).

  As shown in FIG. 2, the straight pipe portion 2 is formed by a cylindrical pipe formed by an injection molding method and extending linearly.

  As shown in FIG. 3, the connection socket 3 includes a large-diameter cylindrical portion 31 on the upper side and a small-diameter cylindrical portion 32 on the lower side, and the flow path of the piping unit 1 is drained inside the small-diameter cylindrical portion 32. A spiral blade 33 is provided to prevent negative pressure from being applied to the space upstream of the blocked portion by being blocked. In the connection socket 3, the straight tube portion 2 is fitted and connected to the upper end side end portion of the large diameter cylindrical portion 31, and the elbow 4 is externally connected to the lower end side end portion of the small diameter cylindrical portion 32.

  The spiral blade 33 is a plate-like member having a curved shape along the inner peripheral surface of the connection socket 3 in plan view. The outer peripheral surface 33a of the spiral blade 33 extends around a part of the spiral along the inner peripheral surface of the connection socket 3 with the axis 3c of the connection socket 3 as the center. Further, the upper surface 33b of the spiral blade 33 has a rectifying surface that receives a part of the drainage and regulates the downward flow of the drainage in a state where the connection socket 3 is attached to the straight pipe portion 2 and guides it in a predetermined direction. It is formed to become. The formation range of the spiral blade 33 is set to a half pitch to a half pitch of the virtual spiral shape formed on the inner peripheral surface of the connection socket 3.

  Further, on the outer peripheral surface of the small-diameter cylindrical portion 32 of the connection socket 3, a circular cross-section projection 34 (positioning means) that projects outward in the radial direction is provided. The formation position of the protrusion 34 is the spiral start position of the spiral blade 33 in the circumferential direction of the outer surface, and is disposed at a position that is at an appropriate height from the downstream end.

  As shown in FIG. 4, the elbow 4 is a pipe joint that connects the connection socket 3 and the horizontal draw pipe 8 (see FIG. 1) arranged at an angle of approximately 90 degrees. In the elbow 4, a wall portion that receives the drainage substantially opposite to the flow direction of the drainage flowing down from the straight pipe member 10 is a curved portion 41 that is curved and changes the drainage flow path. The elbow 4 has a diameter larger than that of the bending portion 41 on the upstream side and the downstream side of the bending portion 41. A small-diameter cylindrical portion 32 of the connection socket 3 is fitted and connected to the upstream side enlarged diameter portion 42, and a horizontal pipe 8 is fitted and connected to the downstream side enlarged diameter portion 43.

  In addition, a rubber ring 45 having water-stopping properties is provided along the circumferential direction of the elbow 4 on the inner surface of the upstream side enlarged diameter portion 42 of the elbow 4. That is, the connection socket 3 is detachably connected to the elbow 4 through the rubber ring 45 in a non-fixed state. As the rubber ring 45, an O-ring, packing or the like can be used.

  A concave cutout 44 for fitting the projection 34 of the connection socket 3 is formed at the upper end of the upstream diameter-increased portion 42 of the elbow 4. By fitting the protrusion 34 into the notch 44, the connection socket 3 and the elbow 4 are positioned in the circumferential direction around the axis 3c (see FIG. 5).

  Further, as shown in FIG. 4, the elbow 4 can selectively position the connection socket 3 at a predetermined position around its axis 3c, and the position of the spiral blade 33 provided on the connection socket 3 can be freely set to a desired position. The configuration can be changed. Specifically, the receiving end 4a at the upstream end is provided with a plurality (eight positions here) of notches 44 (positioning means) at a pitch of 45 degrees in the circumferential direction. The protrusion 34 of the connection socket 3 can be selectively fitted into each of the notches 44 (see FIG. 5).

  Further, as shown in FIG. 6, a positioning mark P indicating the horizontal flow path side (direction of the horizontal draw pipe 8) of the elbow 4 is provided at the upstream end of the elbow 4. As the positioning mark P, it is possible to use a display written with ink, a seal, a protrusion, a recess, or the like.

  As shown in FIG. 1, the piping unit 1 configured in this way is connected to each other, that is, between the upper socket 63 and the straight pipe part 2, between the straight pipe part 2 and the connection socket 3, and between the connection socket 3 and the elbow 4. The elbow 4 and the horizontal drawing tube 8 are connected to each other by an adhesive.

  As shown in FIG. 5, the connection procedure of the piping unit 1 is as follows. First, after connecting the connection socket 3 to the elbow 4 connected to the horizontal pipe 8, the straight pipe portion 2 is connected to the connection socket 3. Connecting. Alternatively, the connection socket 3 is connected to the downstream end of the straight pipe portion 2 in advance and integrated, and the integrated connection socket 3 is connected to the elbow 4 connected to the horizontal pipe 8. It can also be a procedure.

Next, the construction method and operation of the piping unit according to this embodiment will be described.
In the present embodiment, as shown in FIGS. 7A and 7B, the elbow 4 is connected to the horizontal pipe 8 extending in the horizontal direction in the underfloor space R. Next, as shown in FIG. 7 (c), the connection socket 3 is penetrated through the flooring 5 and connected to the upstream end of the elbow 4 in a non-fixed state, and as shown in FIG. 7 (d), the connection socket 3 is also connected. The straight pipe part 2 is connected to 3 and the installation work of the piping unit is completed.

As described above, in the present embodiment, the projection 34 of the connection socket 3 is selectively fitted into each of the plurality of cutout portions 44 provided at predetermined intervals in the circumferential direction in the receiving port 4a of the elbow 4. The socket 3 can be positioned with respect to the elbow 4 at an arbitrary rotation angle.
Therefore, the straight pipe member can be positioned and connected to the curved pipe so that the spiral blades 33 are arranged at a suitable rotation angle according to the position of drainage flowing down in the straight pipe member 10 and the position of the elbow 4. .

  In this case, as shown in FIGS. 8A and 8B, the connection socket 3 can be positioned with respect to the receiving port 4a of the elbow 4 at an arbitrary rotation angle. Here, FIG. 8A shows the connection socket 3 in a position where the spiral blade 33 does not contact the drainage W. FIG. 8B shows the connection socket 3 in a position where the spiral blade 33 is in contact with the drainage W.

  Specifically, as shown in FIG. 9A, the drainage W flowing down in the straight pipe portion 2 and the connection socket 3 depending on the position of the elbow 4A with respect to the toilet 6 (reference numerals F1, F2, F3, F4). The position in the pipe cross section has changed. For example, the drainage W flows at the position on the toilet socket 6 side of the connection socket 3 at the position of the reference socket F1, and the drainage W flows at the position of the connection socket 3 away from the toilet bowl 6 at the position of the reference socket F2. In addition, positions F1, F2, F3, and F4 of the elbow 4A shown in FIGS. 9A and 9B indicate the positions shifted by 90 ° at the rotation positions around the toilet bowl 6, respectively.

  And in this Embodiment, as shown in FIG.9 (b), the rotation angle from which the spiral blade 33 becomes a suitable position according to the position of the waste_water | drain W in the position F1, F2, F3, F4 of each elbow 4A, Thus, the connection socket 3 can be connected to the elbow 4A. For example, in the case of the position F4, in FIG. 9A, most of the waste water W that does not hit the spiral blade 33 travels along the spiral blade 33 to the lower side of the spiral blade 33 and enters the opening of the elbow 4A. 9b, a water film may be formed in the opening and a negative pressure may be generated inside the piping unit to cause a decrease in the sealing water. However, as shown in FIG. This can be prevented by positioning.

Further, since the connection socket 3 is connected to the elbow 4 in a non-adhering state and with water-stopping properties by the rubber ring 45, only the connection socket 3 or only the straight pipe portion 2 and the connection socket 3 can be easily detached. It can be easily connected by simply fitting another connection socket 3 to the elbow 4 in a non-fixed state.
Therefore, when the toilet bowl is replaced by renovation or the like, the floor material 5 is cut and removed and then integrated by bonding as in the case where the elbow provided in the underfloor space R and the connection socket are bonded and fixed. Since the labor and time-consuming work of taking out and replacing the entire elbow and straight pipe member is not required, the construction efficiency can be improved.

  Further, a positioning mark P indicating the horizontal flow path side of the elbow 4 is provided at the upstream end (receiving port) of the downstream pipe (elbow 4 here) constituting the connecting portion via the rubber ring 45. Therefore, the horizontal flow path direction of the elbow 4 can be confirmed by visually observing the positioning mark P of the elbow 4 from above the flooring 5. Therefore, since the spiral blade 33 is provided in the connection socket 3 connected to the elbow 4, the position of the spiral blade 33 can be positioned without making a mistake according to the direction of the elbow 4.

  In the piping unit and the piping construction method configured as described above, there is an effect that the blade member in the pipe can be suitably arranged at the position regardless of the position of the drainage in the pipe and the arrangement of the curved pipe.

  As mentioned above, although embodiment of the piping unit and piping construction method by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.

  For example, in the above-described embodiment, the straight pipe member 10 is a member composed of the straight pipe portion 2 and the connection socket 3, but the configuration in which the connection socket 3 is omitted, that is, the straight pipe member 10 is only the straight pipe portion 2. It is also possible to adopt what is comprised.

Moreover, in this Embodiment, although the positioning mark P which shows the horizontal flow path side is provided in the upstream edge part of the elbow 4, it is not limited to this.
For example, when connecting the connection socket 3 to the elbow 4 in advance before connecting the straight pipe portion 2, positioning that indicates the horizontal flow path side of the elbow 4 at the upstream end of the connection socket 3. A mark P may be provided.
Further, the positioning mark P indicating the horizontal flow path side may be provided inside the curved portion of the elbow 4. In this case, the horizontal flow path direction is provided even after the straight pipe portion 2 and the connection socket 3 are provided. Can be confirmed.

  Furthermore, in the above embodiment, the circumferential interval of the notches 44 is 45 degrees, but the pitch is not limited to this, and the pitch is set to a smaller pitch, for example, a 10 degree pitch. It is also possible.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

1 Piping unit 2 Straight pipe part 3 Connection socket 4 Elbow (curved pipe)
5 Floor material 6 Toilet bowl 8 Horizontally drawn pipe 10 Straight pipe member 33 Spiral blade (blade member)
34 Protrusion (positioning means)
41 curved portion 44 notch (positioning means)
45 Rubber ring P Position mark R Underfloor space

Claims (4)

The flow path is formed in the vertical direction, and has a straight pipe portion that allows the drainage to flow down, and a straight pipe member provided with a spiral blade member;
A curved pipe connected to the downstream side of the straight pipe member and changing the flow path of the drainage from the vertical direction to the horizontal direction;
With
In the connecting portion between the straight pipe member and the curved pipe, the straight pipe member is connected to the curved pipe in a non-fixed state, and at an arbitrary rotation angle in the circumferential direction around the axis of the straight pipe member. A piping unit comprising positioning means that can be positioned freely.   The positioning means includes a plurality of cutout portions formed along the circumferential direction at one end of the straight pipe member and the curved pipe, and the other projecting from the outer peripheral surface at the other and engaging with the cutout portion. The piping unit according to claim 1, wherein the piping unit comprises a projection.   The piping unit according to claim 1 or 2, wherein a positioning mark indicating a horizontal flow path side is provided at an upstream end portion of the bent pipe. The flow path is formed in the vertical direction, and has a straight pipe portion that allows the drainage to flow down, and a straight pipe member provided with a spiral blade member;
A pipe connected to a downstream side of the straight pipe member and configured to change the flow path of the drainage from the vertical direction to the horizontal direction, and installed in a floor space below the floor of the building A construction method,
Connecting the curved pipe to a horizontal pipe extending in a horizontal direction in the underfloor space;
Arranging the flooring after installation of the curved pipe;
Connecting the straight pipe member in a non-adhering state to the upstream end of the curved pipe through the floor material;
Have
The straight pipe member is connected to the curved pipe by positioning the blade member at a predetermined angle by positioning means that can be positioned at any rotation angle in the circumferential direction around the axis. Piping method.

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