CN110607825A - Drainage pipeline structure - Google Patents
Drainage pipeline structure Download PDFInfo
- Publication number
- CN110607825A CN110607825A CN201910505254.1A CN201910505254A CN110607825A CN 110607825 A CN110607825 A CN 110607825A CN 201910505254 A CN201910505254 A CN 201910505254A CN 110607825 A CN110607825 A CN 110607825A
- Authority
- CN
- China
- Prior art keywords
- drain
- pipe
- drainage
- pipe member
- bent pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/28—Odour seals
- E03C1/284—Odour seals having U-shaped trap
Abstract
The invention relates to a drainage pipeline structure. The drain pipe structure (10) is provided with a drain pipe (24A) for discharging drain from the washbasin (22), a vertical part (60A) of an L-shaped pipe (60) which is arranged at the downstream side of the drain pipe (24A) in the draining direction and is used for enabling the drain to flow to the downstream side in the draining direction, and a drain trap (26) which is arranged between the drain pipe (24A) and the vertical part (60A), wherein the drain trap (26) is composed of a 1 st bent pipe component (28) and a 2 nd bent pipe component (30) which can rotate relative to the 1 st bent pipe component (28) in the horizontal plane.
Description
Technical Field
The present invention relates to a drainage pipe structure having a drainage trap provided on the downstream side of a water-using appliance.
Background
In order to prevent odor and the like from being discharged from the downstream side to the water use equipment side, a so-called letter S-shaped trap is provided on the downstream side of the water use equipment as an example (for example, refer to patent document 1).
The S-shaped trap is disposed between the upstream pipe on the water-using tool side and the downstream pipe that penetrates the floor and stands upward, and is connected to the pipe on the water-using tool side and the pipe that stands up from the floor.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2015-98702
Disclosure of Invention
Problems to be solved by the invention
However, in many cases, the S-letter shaped water trap is installed after the position of the water-using appliance side pipe and the downstream side pipe standing from the floor is determined, and in such a case, the S-letter shaped water trap has a problem that it is difficult to install the water-using appliance side pipe and there is room for improvement.
That is, the S-letter shaped trap is integrally molded of a synthetic resin such as polyvinyl chloride, and the pitch in the horizontal direction between the end (upper end) on the upstream side in the drainage direction and the end (lower end) on the downstream side in the drainage direction is fixed, in other words, the pitch is constant.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a drain pipe structure in which a drain trap is easily installed.
Means for solving the problems
The drainage pipeline structure of technical scheme 1 includes: a 1 st drain line for draining drain water from the water using appliance; a 2 nd drain line provided on a downstream side in a drain direction of the 1 st drain line, for causing the drain water to flow to the downstream side in the drain direction; and a drainage trap provided between the 1 st drainage pipe line and the 2 nd drainage pipe line, the drainage trap including a 1 st bent pipe member and a 2 nd bent pipe member, the 1 st bent pipe member being connected to the 1 st drainage pipe line and changing a direction from a lower side to an upper side for storing water, the 2 nd bent pipe member being provided on a downstream side of the 1 st bent pipe member in a drainage direction, changing a direction from an upper side to a lower side, and being rotatable in a horizontal plane with respect to the 1 st bent pipe member.
The drainage trap used in the drainage pipeline structure according to claim 1 is capable of connecting the end portion on the upstream side in the drainage direction of the 1 st bent pipe member to the end portion on the downstream side in the drainage direction of the 1 st drainage pipeline, and connecting the end portion on the downstream side in the drainage direction of the 2 nd bent pipe member to the end portion on the upstream side in the drainage direction of the 2 nd drainage pipeline.
The drainage trap can relatively rotate the 1 st bent pipe member and the 2 nd bent pipe member in a horizontal plane, thereby changing the axial center distance in the horizontal direction between the end part on the upstream side in the drainage direction of the 1 st bent pipe member and the end part on the downstream side in the drainage direction of the 2 nd bent pipe member.
Therefore, the distance between the axial center of the end portion on the upstream side in the drainage direction of the drainage trap and the axial center of the end portion on the downstream side in the drainage direction of the drainage pipe is changed in accordance with the distance between the axial centers of the end portion on the downstream side in the drainage direction of the 1 st drainage pipe line and the end portion on the upstream side in the drainage direction of the 2 nd drainage pipe line for discharging the drainage water from the water using equipment, whereby the drainage trap can be easily connected to the 1 st drainage pipe line and the 2 nd drainage pipe line.
The invention described in claim 2 is the drainpipe structure described in claim 1, wherein the 2 nd bent pipe member has a cross-sectional shape changing portion, and the cross-sectional shape of the flow path on the upstream side in the drainage direction of the cross-sectional shape changing portion, which is perpendicular to the axis, is circular, and the cross-sectional shape of the flow path on the downstream side in the drainage direction, which is perpendicular to the axis, is a shape having a major axis and a minor axis.
When the cross-sectional shape of the flow path at right angles to the axis, in other words, the shape of the inner surface of the pipe, is constant from the upstream side in the drainage direction toward the downstream side in the drainage direction, foreign matters in the drainage are less likely to be caught on the inner surface of the pipe, but when the cross-sectional shape of the flow path at right angles to the axis is changed, foreign matters in the drainage are more likely to be caught on a portion where the cross-sectional shape at right angles to the axis is changed than when the cross-sectional shape at right angles to the axis is constant. In other words, foreign matter in the drainage is easily caught at the cross-sectional shape changing portion of the 2 nd bent pipe member.
In addition, when the foreign matter is caught in the inside of the 2 nd bent pipe member, for example, the 1 st bent pipe member and the 2 nd bent pipe member can be separated from each other, and the foreign matter in the inside can be easily removed from the end portion of the 2 nd bent pipe member.
For example, if foreign matter in drainage is caught in a pipe under the floor, the foreign matter in the pipe cannot be easily removed, but by providing the drainage trap above the floor, the foreign matter caught in the drainage trap can be easily removed. Further, since the foreign matter in the drainage can be captured at the upstream side of the interior of the underfloor duct, the foreign matter in the drainage can be prevented from being caught in the underfloor duct.
The cross-sectional shape perpendicular to the axis having the major axis and the minor axis may be alternatively referred to as a flat shape such as an ellipse.
An invention described in claim 3 is the drainpipe structure described in claim 2, wherein a flow path cross-sectional area when the flow path of the 2 nd bent pipe member is viewed in a cross-section perpendicular to the axis is constant from upstream in the drainage direction to downstream in the drainage direction.
If the cross-sectional area of the flow path of the pipe becomes smaller in the middle, resistance when the drain flows becomes large, and the drain is difficult to flow.
In the drainage trap of claim 3, the sectional shape of the 2 nd bent pipe member changes, but the sectional area of the flow path is constant, and therefore the flow path resistance when the drainage flows is hardly affected.
An invention described in claim 4 is the water discharge pipeline structure described in claim 1, wherein a reducing water discharge pipe is provided between the 1 st water discharge pipeline and the water discharge trap, the reducing water discharge pipe having a step surface formed on an inner peripheral surface thereof so as to intersect with a water discharge direction, and an inner diameter of the step surface on a downstream side in the water discharge direction is relatively smaller than an inner diameter of the step surface on an upstream side in the water discharge direction.
For example, when a siphon drain pipe is used as the drain pipe structure, if the drain water is accumulated in the water using equipment, the drain water swirls and swirls at the bottom of the water using equipment, and air, which is a hollow portion at the center of the swirl, may enter the pipe. If air enters the duct, the process of the siphon drain pipe becoming full flow is slowed, and as a result, the generation of siphon force may be slowed.
In the drainage pipeline structure according to claim 4, the stepped surface is provided in the pipeline of the different-diameter drainage pipe, so that the drainage is subjected to resistance in the portion where the pipe diameter changes, thereby suppressing the generation of a vortex, and the inside of the pipeline on the downstream side of the stepped surface is easily brought into a full flow, thereby enabling the siphon force to be generated quickly.
The invention described in claim 5 is the water discharge pipeline structure described in claim 2, wherein a different diameter water discharge pipe is provided between the 1 st water discharge pipeline and the water discharge trap, and a step surface intersecting with a water discharge direction is formed on an inner peripheral surface of the different diameter water discharge pipe, and an inner diameter of a downstream side in the water discharge direction of the step surface is relatively smaller than an inner diameter of an upstream side in the water discharge direction.
For example, when a siphon drain pipe is used as the drain pipe structure, if the drain water is accumulated in the water using equipment, the drain water swirls and swirls at the bottom of the water using equipment, and air, which is a hollow portion at the center of the swirl, may enter the pipe. If air enters the duct, the process of the siphon drain pipe becoming full flow is slowed, and as a result, the generation of siphon force may be slowed.
In the drainage pipeline structure according to claim 5, the stepped surface is provided in the pipeline of the different-diameter drainage pipe, so that the drainage is subjected to resistance in the portion where the pipe diameter changes, thereby suppressing the generation of a vortex, facilitating the full flow in the pipeline on the downstream side of the stepped surface, and enabling the rapid generation of the siphon force.
The invention described in claim 6 is the water discharge pipeline structure described in claim 3, wherein a different diameter water discharge pipe is provided between the 1 st water discharge pipeline and the water discharge trap, and a step surface intersecting with a water discharge direction is formed on an inner peripheral surface of the different diameter water discharge pipe, and an inner diameter of a downstream side in the water discharge direction of the step surface is relatively smaller than an inner diameter of an upstream side in the water discharge direction.
For example, when a siphon drain pipe is used as the drain pipe structure, if the drain water is accumulated in the water using equipment, the drain water swirls and swirls at the bottom of the water using equipment, and air, which is a hollow portion at the center of the swirl, may enter the pipe. If air enters the duct, the process of the siphon drain pipe becoming full flow is slowed, and as a result, the generation of siphon force may be slowed.
In the drainage pipeline structure according to claim 6, the stepped surface is provided in the pipeline of the different-diameter drainage pipe, so that the drainage is subjected to resistance in the portion where the pipe diameter changes, thereby suppressing the generation of a vortex, and the inside of the pipeline on the downstream side of the stepped surface is easily brought into a full flow, thereby enabling the siphon force to be generated quickly.
The invention described in claim 7 is the drainpipe structure according to any one of claims 1 to 6, wherein the 1 st curved pipe member and the 2 nd curved pipe member are connected by a relay pipe, the relay pipe includes an insertion recess into which an end portion of the 2 nd curved pipe member on the upstream side in the drainage direction is inserted, an annular seal member made of an elastic material is disposed between a bottom portion of the insertion recess and the end portion of the 2 nd curved pipe member on the upstream side in the drainage direction, and a gap between the relay pipe and the 2 nd curved pipe member is sealed.
In the drain pipeline structure according to claim 7, the 1 st bent pipe member and the 2 nd bent pipe member are connected by a relay pipe.
An end portion of the 2 nd bent pipe member on the upstream side in the water discharge direction is inserted into the insertion recess portion of the relay pipe, an annular seal member made of an elastic material is disposed between a bottom portion of the insertion recess portion and the end portion of the 2 nd bent pipe member on the upstream side in the water discharge direction, and a gap between the relay pipe and the 2 nd bent pipe member is sealed. This can suppress leakage of drain water from between the relay pipe and the 2 nd bent pipe member.
ADVANTAGEOUS EFFECTS OF INVENTION
As described above, the drain pipe structure according to the present invention has an excellent effect that the drain trap can be easily attached.
Drawings
Fig. 1 is a side view showing a drain pipe structure according to embodiment 1 of the present invention.
FIG. 2 is a side view showing a drain trap used in the drain pipe structure according to embodiment 1.
FIG. 3 is a side view, partially in section, showing the 1 st bent pipe member of the drainage trap.
Fig. 4 (a) is a side view showing a 2 nd bending pipe member of the drainage trap, and fig. 4 (B) is a side view (right side view of fig. 2) partially cut away showing the 2 nd bending pipe member.
FIG. 5 (A) is a sectional view taken along line A-A of the drainage trap shown in FIG. 2, FIG. 5 (B) is a sectional view taken along line B-B of the drainage trap shown in FIG. 2, and FIG. 5 (C) is a sectional view taken along line C-C of the drainage trap shown in FIG. 2.
Fig. 6 (a) is an explanatory view for explaining a case where an inter-axial distance between an axis of an upstream side end portion of the 1 st bent pipe member and an axis of a downstream side end portion of the 2 nd bent pipe member is maximized, fig. 6 (B) is an explanatory view for explaining a case where an inter-axial distance between an axis of an upstream side end portion of the 1 st bent pipe member and an axis of a downstream side end portion of the 2 nd bent pipe member is minimized, and fig. 6 (C) is an explanatory view for explaining a horizontal inter-axial distance between an axis of a drain discharge pipe of the drain outlet member and an axis of a vertical portion of the L-shaped pipe.
Fig. 7 is a horizontal sectional view of the drainage trap of embodiment 2.
Fig. 8 is a sectional view showing a relay pipe used in the drainage trap of embodiment 3.
Fig. 9 (a) is a cross-sectional view of the different-diameter drain pipe showing the drain pipe structure according to embodiment 4, and fig. 9 (B) is an enlarged cross-sectional view showing a step surface of the different-diameter drain pipe.
Description of the reference numerals
10. A drainage pipeline structure; 22. a washbasin; 24A, a drain outlet pipe (No. 1 drain pipe); 26. a water drainage trap; 28. 1 st bent pipe member; 30. a 2 nd bent pipe member; 30B, a curved portion (cross-sectional shape changing portion); 60. letter L-shaped duct (2 nd drainage duct); 84. a recess; 88. flat seals (seals); 90. reducing the drain pipe; 98. a step surface.
Detailed Description
[ embodiment 1 ]
A drainpipe structure 10 according to embodiment 1 of the present invention will be described with reference to fig. 1 to 6.
As shown in fig. 1, the drain duct structure 10 of the present embodiment can be used for a collective housing made up of a plurality of floors (only predetermined floors are shown in fig. 1). The collective housing includes a vertical drain pipe 12 for allowing drain water to flow downward. The vertical drainage pipe 12 extends in the vertical direction of the collective housing and penetrates through concrete floors 14 of each floor of the collective housing. Further, the drain duct structure of the present invention is suitably applied to collective housing, but may be applied to independent housing, factory, and the like other than collective housing.
In each of the individual households in the collective housing, a washbasin 22, which is an example of the water-using appliance of the present invention, is provided above the floor material 20 in the living room 16 (the left side of the wall 18 shown by the two-dot chain line in fig. 1).
A drain outlet pipe 24A, which is an example of the 1 st drain pipe, is provided on the drain opening member 24 of the washbasin 22 so as to have a circular cross section at right angles to the axis, and the drain outlet pipe 24A is bent in an L-letter shape and extends downward. A drain trap 26 is connected to a vertical portion of the drain discharge pipe 24A.
(drainage trap)
As shown in fig. 2, the drain trap 26 is formed in a substantially letter S shape in side view by connecting a 1 st bent pipe member 28, which is formed in a substantially letter U shape in side view and is disposed on the upstream side in the drain direction, and a 2 nd bent pipe member 30, which is formed in a substantially inverted letter U shape in side view and is disposed on the downstream side in the drain direction, so as to be changed in direction from below to above. In other words, the drainage trap 26 is a so-called letter S-shaped trap.
(1 st bent pipe Member)
As shown in fig. 3, the 1 st bent pipe member 28 is provided with a straight portion 28A having a circular cross section at right angles to the axis on the upstream side in the drainage direction, and the straight portion 28A extends in the vertical direction and has the same inner diameter and the same outer diameter as the drainage discharge pipe 24A. A large-diameter pipe portion 28B having a circular cross section perpendicular to the axis is formed at an upstream end (upper end) of the straight portion 28A in the drainage direction, and the drainage and drainage pipe 24A is rotatably inserted into the large-diameter pipe portion 28B.
A male screw 29 is formed on the outer periphery of the large-diameter tube portion 28B, and a hand nut 32 is detachably attached to the male screw 29. The 1 st bent pipe member 28 of the drain trap 26 can be connected to the drain discharge pipe 24A by interposing the seal 34 between the large diameter pipe portion 28B and the drain discharge pipe 24A, inserting the drain discharge pipe 24A into the large diameter pipe portion 28B, and tightening the hand nut 32.
In the 1 st bent pipe member 28, a bent portion 28C formed in a substantially semicircular arc shape in side view is formed continuously with the lower end portion of the straight portion 28A. The bent portion 28C has a circular cross section at right angles to the axis. A tubular cleaning port 36 that opens downward is provided at the bottom of the bent portion 28C. A male screw portion 36A is formed on the outer periphery of cleaning port 36. Cover 38 is attached to cleaning opening 36 by screwing female screw portion 38A of cover 38 to male screw portion 36A.
A cleaning-port covering seal 40 as a water stopping member is attached to the cleaning port 36. The cleaning-port-covering seal 40 includes a seal main body 40A and a columnar portion 40B. The cleaning-port-covering seal 40 is desirably rubber or the like, and may be an elastic member such as resin or elastomer.
Seal body 40A has a disc shape and is a portion sandwiched between an end surface of cleaning opening 36 and the bottom of cover 38. Columnar portion 40B has a columnar shape, is formed integrally with seal body 40A, and is a portion that fills the space inside cleaning port 36 in a state where cover 38 is attached to cleaning port 36.
The 1 st bent pipe member 28 has a large diameter pipe portion 28D which is formed at a right angle to the axis and has a circular cross section at an end portion on the downstream side in the water discharge direction of the bent portion 28C, and the large diameter pipe portion 28D extends in the vertical direction and has a larger diameter than the bent portion 28C, and into which a straight portion 30A of a 2 nd bent pipe member 30 to be described later is inserted.
A male screw 42 is formed on the outer periphery of the large-diameter tube portion 28D, and a hand nut 44 is detachably attached to the male screw 42. The 2 nd bent pipe member 30 can be coupled to the 1 st bent pipe member 28 by interposing the seal 46 between the large diameter pipe portion 28D and the hand nut 44, inserting the straight portion 30A of the 2 nd bent pipe member 30, which will be described later, into the large diameter pipe portion 28D, and tightening the hand nut 44.
In addition, in the 1 st bent pipe member 28, the straight portion 28A and the bent portion 28C are the same inner diameter.
The 1 st bent pipe member 28 of the present embodiment can be formed by injection molding, for example, but may be formed by another method.
(No. 2 bent pipe Member)
As shown in fig. 4, a straight portion 30A having a circular cross section perpendicular to the axis is provided on the upstream side of the 2 nd bent pipe member 30 in the water discharge direction, and the straight portion 30A extends in the vertical direction and has the same inner diameter and the same outer diameter as the bent portion 28C of the 1 st bent pipe member 28.
As shown in fig. 2 and 3, the straight portion 30A of the 2 nd bent pipe member 30 is rotatably inserted into the large diameter pipe portion 28D of the 1 st bent pipe member 28. Therefore, the 2 nd curved pipe member 30 can rotate relative to the 1 st curved pipe member 28 in the horizontal plane about the axis of the straight portion 30A and the axis of the large-diameter pipe portion 28D.
As shown in fig. 4, a curved portion 30B, which is an example of a portion having a substantially semicircular arc shape in a side view (see fig. 4 (B)), and a straight portion 30C extending downward is formed continuously with the other end of the curved portion 30B, and is formed continuously with the upper end of the straight portion 30A.
The curved portion 30B gradually changes its cross section perpendicular to the axis from a circular shape to an elliptical shape (see fig. 4, 5 a and 5B) from the end portion on the upstream side in the drainage direction (the connection portion connected to the straight portion 30A) toward the end portion on the downstream side in the drainage direction (the connection portion connected to the straight portion 30C), and the major axis LCL of the elliptical shape becomes the longest at the end portion on the downstream side in the drainage direction of the curved portion 30B (the connection portion connected to the straight portion 30C, see fig. 5B). In other words, at the end portion on the downstream side in the water discharge direction of the bent portion 30B, the ratio of the length of the major axis LCL to the length of the minor axis SCL of the ellipse (length of the major axis LCL/length of the minor axis SCL) becomes the maximum value.
As shown in fig. 4 and 5, in the bent portion 30B of the present embodiment, the major axis LCL of the elliptical shape is oriented in a direction (the direction of arrow a) perpendicular to a direction connecting an end portion on the upstream side in the drainage direction and an end portion on the downstream side in the drainage direction of the bent portion 30B.
The straight portion 30C formed continuously with the other end of the curved portion 30B gradually changes the cross-sectional shape of the flow path at right angles to the axis from an elliptical shape to a circular shape as it goes downward (as an example, the flow path changes in the order of fig. 5 (B), 5 (C), and 5 (D)).
As shown in fig. 4, a large-diameter pipe portion 30D having a circular cross section perpendicular to the axis is formed at the end portion on the downstream side in the drainage direction of the straight portion 30C, and a vertical portion 60A of an L-shaped pipe 60, which is an example of a 2 nd drainage pipe, described later is rotatably inserted into the large-diameter pipe portion 30D. A male screw 48 is formed on the outer periphery of the large-diameter pipe portion 30D, and a hand nut 50 is detachably attached to the male screw 48.
The vertical portion 60A of the L-shaped pipe 60 can be connected to the 2 nd bent pipe member 30 by interposing the seal 52 between the large-diameter pipe portion 30D and the vertical portion 60A, inserting the vertical portion 60A into the large-diameter pipe portion 30D, and tightening the hand nut 50.
In the drain trap 26 of the present embodiment, a cylindrical vent valve mounting portion 54 that opens upward is formed at an upper portion of the bent portion 30B of the 2 nd bent pipe member 30.
An external thread 56 is formed on the outer periphery of the vent valve attachment portion 54, and a vent valve 58 is attached to the external thread 56, as shown in fig. 2. The vent valve 58 is a member for allowing air from the outside to pass through the drain trap 26 and preventing drain and air from passing through the drain trap 26 to the outside. The vent valve 58 has the same structure as the components provided in the conventional drain trap, and therefore, a detailed description thereof is omitted.
The 2 nd bent pipe member 30 of the present embodiment can be formed by blow molding, for example, but may be formed by another method.
(letter L-shaped pipe)
As shown in fig. 1, an L-letter shaped pipe 60 bent in an L-letter shape and having a circular cross-sectional shape perpendicular to the axis is disposed on the downstream side in the water discharge direction of the water discharge trap 26. The L-shaped pipe 60 includes a vertical portion 60A inserted into the large-diameter pipe portion 30D of the drain trap 26 and extending in the vertical direction, a horizontal portion 60B disposed above the floor slab 14 in the horizontal direction and extending in the horizontal direction, and a bent portion 60C connecting the vertical portion 60A and the horizontal portion 60B. For example, a commercially available product (also referred to as an elbow) made of a synthetic resin such as a rigid polyvinyl chloride resin may be used for the letter L-shaped pipe 60.
A horizontal pipe member 64 constituting a part of the siphon drain pipe 62 is disposed on the downstream side in the drain direction of the L-letter pipe 60. The cross pulling pipe member 64 of the present embodiment uses a flexible synthetic resin pipe having a nominal diameter of 20 as defined in JISK6778 and JISK 6792. As the synthetic resin pipe used for the lateral pulling pipe member 64, for example, a flexible polybutylene pipe can be used, but other kinds of synthetic resin pipes can be used. The cross-pull pipe member 64 is not limited to a member having a nominal diameter of 20, and a member having a nominal diameter of 25 may be used. In addition, the letter L-shaped conduit 60 and the cross-pull tube member 64 are connected by a joint 66.
A meter box 68 is provided on the outer side of the living room 16 on the downstream side of the stay pipe member 64 in the drainage direction (on the right side of the wall 18 shown by the two-dot chain line in fig. 1).
A downpipe 70 bent in an L shape forming a part of the siphon drain pipe 62 is disposed in the meter box 68. The drop pipe 70 includes a horizontal portion 70A disposed on the floor 14 and extending in the horizontal direction, a vertical portion 70B extending in the vertical direction, and a bent portion 70C connecting the horizontal portion 70A and the vertical portion 70B. As the downpipe 70, for example, a commercially available product (also referred to as an elbow) made of a synthetic resin such as a hard polyvinyl chloride resin can be used.
The cross-pull pipe member 64 and the horizontal portion 70A of the downpipe 70 are connected by a joint 72.
A vertical pipe member 74 that constitutes a part of the siphon drain pipe 62 and extends in the vertical direction is disposed on the downstream side in the drainage direction of the downpipe 70. An end portion on the upstream side in the drainage direction of the standpipe member 74 is connected to the vertical portion 70B of the drop pipe 70 via a joint 76.
The end portion on the downstream side in the drainage direction of the standpipe member 74 is connected to a junction joint 78 attached to the middle portion of the drainage standpipe 12. The standpipe member 74 of this embodiment uses the same piping as the cross-pull pipe member 64.
The horizontal portion 60B of the L-shaped pipe 60, the horizontal pulling member 64, and the horizontal portion 70A of the drop pipe 70 extending in the lateral direction are examples of the horizontal pulling pipe of the siphon drain pipe of the present invention, and the vertical portion 70B of the drop pipe 70 and the vertical pipe member 74 extending in the vertical direction are examples of the vertical pipe of the siphon drain pipe.
(action, Effect)
Next, the operation and effect of the drain pipeline structure 10 of the present embodiment will be described.
The drain trap 26 of the present embodiment includes a 1 st bent pipe member 28 provided on the upstream side in the drain direction and a 2 nd bent pipe member 30 provided on the downstream side in the drain direction, which are dividable at an intermediate portion in the drain direction, and the 1 st bent pipe member 28 is rotatable about the axis of the large diameter pipe portion 28B and the 2 nd bent pipe member 30 is rotatable about the axis of the linear portion 30A at a joint portion (a portion where the linear portion 30A of the 2 nd bent pipe member 30 is rotatably inserted into the large diameter pipe portion 28B of the 1 st bent pipe member 28) between the first bent pipe member and the second bent pipe member 30. Thus, the horizontal axial distance La between the large-diameter pipe portion 28B on the upstream side in the water discharge direction of the 1 st bent pipe member 28 and the large-diameter pipe portion 30D on the downstream side in the water discharge direction of the 2 nd bent pipe member 30 can be changed in the water discharge trap 26 (see fig. 6a and 6B).
As an example, it is possible to freely set between the 1 st state shown in fig. 6a and the 2 nd state shown in fig. 6B, and even if there is an error in construction, the distance Lb between the drain pipe 24A of the drain port member 24 of the washbasin 22 and the vertical portion 60A of the letter L-shaped pipe 60 standing upward above the floor member 20 (see fig. 6C), it is possible to easily connect the drain trap 26 to the drain pipe 24A of the drain port member 24 and the vertical portion 60A of the letter L-shaped pipe 60 by changing the distance La between the drain trap 26 and the distance L2 between the axes.
In the drainage trap 26 of the present embodiment, the sectional shape of the 2 nd bent pipe member 30 changes from a circular shape to an elliptical shape from a portion on the downstream side in the drainage direction from the apex of the 2 nd bent pipe member 30 (in other words, a connecting portion between the straight portion 30A and the bent portion 30B), and the dimension of the minor axis of the elliptical portion is shorter than the diameter of the circular portion, so that foreign matter in drainage becomes liable to be caught in a portion where the sectional shape changes (in other words, a portion where the flow path narrows (minor axis portion)) (as compared with a case where the sectional shape is still circular).
In the drainage trap 26 of the present embodiment, the 1 st bent pipe member 28 and the 2 nd bent pipe member 30 can be separated, and the portion where the sectional shape of the 2 nd bent pipe member 30 changes is a portion close to the joint portion of the 1 st bent pipe member 28 and the 2 nd bent pipe member 30, so that the 1 st bent pipe member 28 and the 2 nd bent pipe member 30 can be separated, and foreign matter caught inside the 2 nd bent pipe member 30 can be easily removed.
For example, if foreign matter in the drainage is caught in the horizontal stay tube member 64 and the vertical stay tube member 74 disposed on the downstream side of the floor material 20, it is difficult to determine the position where the foreign matter is caught, and the foreign matter caught in the middle of the pipe cannot be easily removed.
However, if foreign matter is easily caught by the drainage trap 26 as in the present embodiment, the foreign matter can be prevented from flowing to the downstream side of the drainage trap 26. Further, since the foreign matter can be removed on the upper side of the floor material 20, the foreign matter can be easily removed even by a general user. Further, since foreign matter (metal or the like) having a large specific gravity that has sunk into the water stays at the bottom of the 1 st bent pipe member 28, the cover 38 can be removed and easily removed from the cleaning port 36.
In the drain pipe structure 10 of the present embodiment, drain water is discharged from the washbasin 22, and the drain water flows through the drain trap 26, the L-shaped pipe 60, and the horizontal pipe member 64 while maintaining a full water state, and flows into the vertical pipe member 74. When the drain water that is full of water falls down in the standpipe member 74 by gravity, siphon force is generated in the standpipe member 74, and the drain water upstream of the standpipe member 74 is drawn toward the standpipe member 74 by siphon force and flows down, enabling efficient drainage.
If the drain water is not discharged from the washbasin 22, a part of the drain water is stored as the water seal SW in the 1 st bent pipe member 28 of the drain trap 26, so that the odor and the like on the downstream side in the drain direction are not discharged from the washbasin 22.
In the 2 nd bent pipe member 30 of the drainage trap 26, the cross section of the bent portion 30B perpendicular to the axis is changed from circular to elliptical and the cross section of the straight portion 30C perpendicular to the axis is changed from elliptical to circular, but the cross sectional area of the flow path of the bent portion 30B and the straight portion 30C perpendicular to the axis may be changed toward the downstream side in the drainage direction or may be constant.
In the 2 nd bent pipe member 30 of the drain trap 26, if the cross-sectional area of the flow path perpendicular to the axis is made constant from the upstream end to the downstream end in the drain direction, the resistance when the drain flows is hardly affected even if the cross-sectional shape is changed.
[ 2 nd embodiment ]
Next, a drain pipe structure 10 according to embodiment 2 of the present invention will be described. The same components as those in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.
In the drainage trap 26 of embodiment 1, as shown in fig. 5 a, the major axis LCL of the ellipse of the 2 nd bent pipe member 30 is directed in the direction (the direction of arrow a) orthogonal to the direction connecting the end portion on the upstream side in the drainage direction and the end portion on the downstream side in the drainage direction of the bent portion 30B, but the present invention is not limited to this, and as an example, as shown in fig. 7, the major axis LCL of the ellipse may be directed in the direction connecting the end portion on the upstream side in the drainage direction and the end portion on the downstream side in the drainage direction of the bent portion 30B (the direction of arrow B), and the direction of the major axis LCL of the ellipse is not particularly limited.
Although not shown, the sectional shape of the 2 nd bent pipe member 30 is changed from a circular shape to an elliptical shape, but the present invention is not limited thereto, and may be changed to a flat shape other than an elliptical shape as long as the sectional shape has a major axis and a minor axis.
The drainage trap 26 of the present embodiment can also obtain the same operation and effect as the aforementioned 1 st drainage trap 26.
[ embodiment 3 ]
Next, a drain pipe structure 10 according to embodiment 3 of the present invention will be described. The same components as those in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.
As shown in fig. 8, in the drainage trap 26 of the present embodiment, a relay pipe 80 for connecting the 1 st curved pipe member 28 and the 2 nd curved pipe member 30 is provided between the 1 st curved pipe member 28 and the 2 nd curved pipe member 30.
In the drainage trap 26 of the present embodiment, a male screw 82 is formed on the outer peripheral surface of the straight portion 30A of the 2 nd bent pipe member 30.
The relay pipe 80 has a straight pipe portion 80A having a circular cross section and perpendicular to the axis, which is inserted into the large-diameter pipe portion 28D of the 1 st bent pipe member 28, and a manually rotatable nut portion 83 is integrally formed at an end portion (upper end portion) on the upstream side in the drainage direction of the straight pipe portion 80A.
A recess 84 is formed on the inner peripheral side of the manual nut 83, and a female screw 86 is formed on the inner peripheral surface of the recess 84, and the female screw 86 is screwed to the male screw 82 formed on the straight portion 30A of the 2 nd bent pipe member 30.
An annular flat seal 88 made of an elastic material such as rubber is disposed at the bottom of the recess 84, and the flat seal 88 is interposed between the end (end face) of the straight portion 30A of the 2 nd bent pipe member 30 and the bottom of the recess 84 to seal the gap between the relay pipe 80 and the 2 nd bent pipe member 30.
In the drainage trap 26 of the present embodiment, the 1 st bent pipe member 28 and the 2 nd bent pipe member 30 can be relatively rotated, and the same operational effects as those of the 1 st drainage trap 26 described above can be obtained.
[ 4 th embodiment ]
Next, a drain pipe structure 10 according to embodiment 4 of the present invention will be described. The same components as those in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.
As shown in fig. 9, in the drain pipe structure 10 of the present embodiment, a reducing drain pipe 90 is connected between the drain discharge pipe 24A of the drain port member 24 and the drain trap 26.
(reducing drainpipe)
As shown in fig. 9, the different-diameter drain pipe 90 includes a small-diameter pipe portion 90A having the same inner diameter and the same outer diameter as the drain discharge pipe 24A of the drain opening member 24, and a large-diameter pipe portion 90B into which the drain discharge pipe 24A is inserted is formed on the upstream side in the drainage direction of the small-diameter pipe portion 90A.
A male screw 92 is formed on the outer periphery of the large-diameter tube portion 90B, and a hand nut 94 is detachably attached to the male screw 92. The different-diameter drain pipe 90 can be connected to the drain discharge pipe 24A of the drain opening member 24 by interposing the seal 96 between the large-diameter pipe portion 90B and the drain discharge pipe 24A of the drain opening member 24, inserting the drain discharge pipe 24A into the large-diameter pipe portion 90B, and tightening the hand nut 94.
The reduced diameter drain pipe 90 has a small diameter pipe portion 90C having a smaller diameter than the small diameter pipe portion 90A formed on the downstream side of the small diameter pipe portion 90A in the drainage direction.
A step surface 98 is formed between the small-diameter pipe portion 90A and the small-diameter pipe portion 90C on the inner periphery of the reduced-diameter drain pipe 90. Preferably, the angle θ of the stepped surface 98 with respect to the small diameter tube portion 90A is set within a range of 90 ° to 100 °. It is also preferable that the step dimension DL of the step surface 98 measured in the radial direction be set in the range of 5mm to 10 mm.
The small-diameter pipe portion 90C of the different-diameter drain pipe 90 is inserted into the large-diameter pipe portion 28B of the drain trap 26. In the drain pipe structure 10 of the present embodiment, the flow path cross-sectional area on the downstream side in the drain direction is relatively smaller than the flow path cross-sectional area on the upstream side in the drain direction, with the step surface 98 of the reduced-diameter drain pipe 90 as a boundary.
(action, Effect)
Next, the operation and effect of the drain pipeline structure 10 of the present embodiment will be described.
When the drain water is accumulated in the washbasin 22, the drain water swirls and swirls at the bottom of the washbasin 22, and a hollow portion at the center of the swirl, that is, air enters the duct, and the process of the siphon drain pipe 62 becoming full flow is slowed, and as a result, the generation of siphon suction force is slowed.
In the drain pipe structure of the present embodiment, by providing the step surface 98 in the reduced-diameter drain pipe 90, resistance is applied to the drain at the portion where the pipe diameter changes, generation of a vortex formed at the bottom of the washbasin 22 when the drain flows into the washbasin 22 is suppressed, the flow in the pipe on the downstream side of the step surface 98 is easily made full (compared with the case where the inner diameter is made constant), and the siphon force can be generated quickly.
Further, by making the diameter of the different-diameter drain pipe 90 small in the middle, the downstream side of the step surface 98 can be made full flow relatively quickly even in the case of flushing.
Further, when the angle θ of the stepped surface 98 is larger than 100 °, it is difficult to obtain an effect of suppressing the swirling of the drain, and when the angle θ of the stepped surface 98 is smaller than 90 °, foreign substances such as dust in the drain are likely to be caught by the stepped surface 98 and accumulate.
If the step size DL is less than 5mm, the effect of suppressing the generation of the swirl is not obtained, and if the step size DL is greater than 10mm, the inner diameter of the pipe on the downstream side of the step surface 98 becomes too small, and the water discharge capacity is lowered.
[ other embodiments ]
While one embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
In the above embodiment, the washbasin 22 is exemplified as the water-using appliance, but the water-using appliance may be any other than the washbasin 22, for example, a kitchen sink, and the type thereof is not particularly limited as long as it discharges water.
Claims (7)
1. A drainage pipeline structure, wherein,
this drainage pipe structure includes:
a 1 st drain line for draining drain water from the water using appliance;
a 2 nd drain line provided on a downstream side in a drain direction of the 1 st drain line, for causing the drain water to flow to the downstream side in the drain direction; and
a drain trap provided between the 1 st drain pipe and the 2 nd drain pipe,
the drainage trap is configured to include a 1 st bent pipe member and a 2 nd bent pipe member, the 1 st bent pipe member is connected to the 1 st drainage pipe, changes direction from below to above, and stores water, and the 2 nd bent pipe member is provided on a downstream side in the drainage direction of the 1 st bent pipe member, changes direction from above to below, and is rotatable in a horizontal plane with respect to the 1 st bent pipe member.
2. The drainage pipeline structure of claim 1,
the 2 nd bent pipe member has a cross-sectional shape changing portion in which a cross-sectional shape of the flow path on the upstream side in the water discharge direction at right angles to the axis is circular, and a cross-sectional shape of the flow path on the downstream side in the water discharge direction at right angles to the axis is a shape having a major axis and a minor axis.
3. The drainage pipeline structure of claim 2,
the flow path cross-sectional area of the 2 nd bent pipe member when viewed in a cross-section perpendicular to the axis is constant from upstream to downstream in the drainage direction.
4. The drainage pipeline structure of claim 1,
a different-diameter drain pipe is provided between the 1 st drain pipe and the drain trap, and has a step surface formed on an inner peripheral surface thereof so as to intersect with the drainage direction, and an inner diameter of the step surface on the downstream side in the drainage direction is relatively smaller than an inner diameter of the step surface on the upstream side in the drainage direction.
5. The drainage pipeline structure of claim 2,
a different-diameter drain pipe is provided between the 1 st drain pipe and the drain trap, and has a step surface formed on an inner peripheral surface thereof so as to intersect with the drainage direction, and an inner diameter of the step surface on the downstream side in the drainage direction is relatively smaller than an inner diameter of the step surface on the upstream side in the drainage direction.
6. The drainage pipeline structure of claim 3,
a different-diameter drain pipe is provided between the 1 st drain pipe and the drain trap, and has a step surface formed on an inner peripheral surface thereof so as to intersect with the drainage direction, and an inner diameter of the step surface on the downstream side in the drainage direction is relatively smaller than an inner diameter of the step surface on the upstream side in the drainage direction.
7. The drainage pipeline structure according to any one of claims 1 to 6, wherein,
the 1 st bent pipe member and the 2 nd bent pipe member are connected by a relay pipe,
the relay pipe includes an insertion recess into which an end portion of the 2 nd bent pipe member on the upstream side in the water discharge direction is inserted,
an annular seal member made of an elastic material is disposed between the bottom of the insertion recess and the end of the 2 nd bent pipe member on the upstream side in the water discharge direction, and a gap between the relay pipe and the 2 nd bent pipe member is sealed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018113870A JP7070856B2 (en) | 2018-06-14 | 2018-06-14 | Drainage piping structure |
| JP2018-113870 | 2018-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110607825A true CN110607825A (en) | 2019-12-24 |
Family
ID=68890209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910505254.1A Pending CN110607825A (en) | 2018-06-14 | 2019-06-12 | Drainage pipeline structure |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7070856B2 (en) |
| CN (1) | CN110607825A (en) |
| TW (1) | TW202003972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116479718A (en) * | 2023-05-06 | 2023-07-25 | 宁波中海建材有限公司 | Intelligent concrete processing system based on area detection |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3828795A1 (en) | 2019-11-28 | 2021-06-02 | Ricoh Company, Ltd. | Information processing system, information processing apparatus, information processing method, and recording medium |
| JP7445585B2 (en) | 2020-12-03 | 2024-03-07 | 株式会社ブリヂストン | siphon drainage system |
| JP7445587B2 (en) | 2020-12-08 | 2024-03-07 | 株式会社ブリヂストン | siphon drainage system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0169870U (en) * | 1987-10-27 | 1989-05-09 | ||
| JPH01124873U (en) * | 1988-02-15 | 1989-08-25 | ||
| JPH0893025A (en) * | 1994-09-29 | 1996-04-09 | Matsushita Electric Works Ltd | S-form trap |
| JPH08333784A (en) * | 1995-06-09 | 1996-12-17 | Inax Corp | Drain trap |
| JP2003113990A (en) * | 2001-10-04 | 2003-04-18 | Sekisui Chem Co Ltd | Drain pipe channel and piping material used for drain pipe channel |
| JP2006152742A (en) * | 2004-12-01 | 2006-06-15 | Inax Corp | Member for trap |
| JP2006316472A (en) * | 2005-05-11 | 2006-11-24 | Maruichi Kk | Drain trap |
| NL1031349C2 (en) * | 2006-03-10 | 2007-09-11 | A A V | Drain device for a sink and connection block with this drain device. |
| JP2010180997A (en) * | 2009-02-09 | 2010-08-19 | Takiron Co Ltd | Drain pipe line structure |
| JP2013236838A (en) * | 2012-05-17 | 2013-11-28 | Toto Ltd | Cabinet with water tub and drain pipe facility installed in cabinet with water tub |
-
2018
- 2018-06-14 JP JP2018113870A patent/JP7070856B2/en active Active
-
2019
- 2019-06-12 CN CN201910505254.1A patent/CN110607825A/en active Pending
- 2019-06-12 TW TW108120221A patent/TW202003972A/en unknown
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0169870U (en) * | 1987-10-27 | 1989-05-09 | ||
| JPH01124873U (en) * | 1988-02-15 | 1989-08-25 | ||
| JPH0893025A (en) * | 1994-09-29 | 1996-04-09 | Matsushita Electric Works Ltd | S-form trap |
| JPH08333784A (en) * | 1995-06-09 | 1996-12-17 | Inax Corp | Drain trap |
| JP2003113990A (en) * | 2001-10-04 | 2003-04-18 | Sekisui Chem Co Ltd | Drain pipe channel and piping material used for drain pipe channel |
| JP2006152742A (en) * | 2004-12-01 | 2006-06-15 | Inax Corp | Member for trap |
| JP2006316472A (en) * | 2005-05-11 | 2006-11-24 | Maruichi Kk | Drain trap |
| NL1031349C2 (en) * | 2006-03-10 | 2007-09-11 | A A V | Drain device for a sink and connection block with this drain device. |
| EP1832796A2 (en) * | 2006-03-10 | 2007-09-12 | A.A.V. | Drain for a washbasin and connecting block comprising said drain |
| JP2010180997A (en) * | 2009-02-09 | 2010-08-19 | Takiron Co Ltd | Drain pipe line structure |
| JP2013236838A (en) * | 2012-05-17 | 2013-11-28 | Toto Ltd | Cabinet with water tub and drain pipe facility installed in cabinet with water tub |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116479718A (en) * | 2023-05-06 | 2023-07-25 | 宁波中海建材有限公司 | Intelligent concrete processing system based on area detection |
| CN116479718B (en) * | 2023-05-06 | 2023-09-19 | 宁波中海建材有限公司 | Intelligent concrete processing system based on area detection |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019214909A (en) | 2019-12-19 |
| JP7070856B2 (en) | 2022-05-18 |
| TW202003972A (en) | 2020-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110607825A (en) | Drainage pipeline structure | |
| US8782824B2 (en) | Tub drain and overflow assembly | |
| JP4252553B2 (en) | Drainage equipment in the building | |
| JP2018025073A (en) | Joint, and drainage system | |
| JP4376235B2 (en) | Leg bend for drainage piping | |
| JP4685573B2 (en) | Drainage pipe joint and drainage pipe structure using the same | |
| JP2003056030A (en) | Joint, joint system and assembled vertical pipe joint | |
| US6341618B1 (en) | Plumbing stop valve and method of use | |
| JP2006207371A (en) | Drain pipe cleaning device | |
| JP5894229B2 (en) | Drainage fitting structure and adjustment ring | |
| JP6339410B2 (en) | Swivel joint and drainage system using the same | |
| JP5576027B2 (en) | Ventilation integrated fitting | |
| JP2003213751A (en) | Joint device for drain pipes | |
| JP4454412B2 (en) | Underfloor piping ventilation structure | |
| JP7425689B2 (en) | drainage structure | |
| JP4376234B2 (en) | Leg bend for drainage piping | |
| JP2007070940A (en) | Drain assembled pipe joint | |
| CN110607823A (en) | Siphon drainage structure | |
| CN111042272A (en) | Joint and drainage system | |
| JP6335953B2 (en) | Drainage joint and drainage system using the same | |
| JP2009062811A (en) | Joint device for drain piping | |
| JP2008291540A (en) | Drain trap | |
| KR200286986Y1 (en) | The flow draining device for in door | |
| KR101177490B1 (en) | Piping connection structure of multiple trap | |
| JP2005248491A (en) | Joint for inner sub-pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191224 |