JP5894229B2 - Drainage fitting structure and adjustment ring - Google Patents

Description

  The present invention relates to a drainage joint structure, and more particularly, to a joint structure and an adjustment ring suitable for connecting a drainage standing pipe and a lateral pipe provided in a drainage pipe.

Conventionally, in the drainage system of buildings such as detached houses, the entire drainage system is installed at the connection position between the drainage pipe and the horizontal pipe in the floor or wall, which is a narrow pipe space, while reducing the overall size. There is a joint device that can ensure air permeability (see, for example, Patent Document 1). In this joint device, the joint body has a double pipe structure of an inner cylinder and an outer cylinder, and a ventilation valve is built in the inner cylinder. Further, a connecting tube portion for connecting a horizontal pipe is integrally provided between the inner tube and the outer tube at a position eccentric with respect to the joint body, and the horizontal tube is connected to the connecting tube portion.
This joint device reduces the negative pressure by venting with a vent valve when negative pressure is generated in the drainage facility, and when drainage flows into the main body from the sink via a horizontal pipe. Smooth drainage is made possible by making this drainage flow as a swirl flow while forming an air core.

On the other hand, Patent Document 2 is provided with two swirling grooves that bulge in the outer peripheral direction on the inner peripheral wall of the joint body, and a joint pipe that communicates with the swirling grooves and connects a horizontal pipe in a tangential direction. Drainage joint.
This drainage joint is made to flow while giving a swirling flow to the drainage when the drainage flows into the main body, and is intended to give the swirling flow to the drainage by the swirling groove.

  By the way, as the horizontal pipe connected to the drainage standpipe, for example, a large-diameter pipe used as a pipe for sewage from a toilet, a small-diameter pipe used for miscellaneous drainage from a washstand, a bath, a washing pan, or There are various diameter pipes such as intermediate diameter pipes used for joining small diameter pipes. In order to connect these horizontal pipes having different diameters, the drainage joints disclosed in the literatures 1 and 2 are previously connected portions corresponding to the diameters of the respective horizontal pipes.

JP 2003-213751 A JP-A-7-91581

  However, in the joint device of Patent Document 1 and the drainage joint of Document 2, when the horizontal pipe has a small diameter, it is necessary to use a main body having a diameter of a different connection portion corresponding to the horizontal pipe. In addition, in this case, the entire joint tends to be small corresponding to the small-diameter side branch pipe. For this reason, especially when these are provided for a small diameter, it is difficult to secure a sufficient flow path surface for generating a swirling flow, or it is difficult to increase the inner diameter of the outer cylinder connected to the drainage pipe. It was. Therefore, when the wastewater flows into the small-diameter drainage joint, the drainage efficiency is remarkably deteriorated as compared with the case of the large-diameter, and foreign matter in the wastewater is easily clogged. In particular, when the joint device of the same document 1 is formed for a small diameter, the ventilation valve cannot be smoothly operated due to the deterioration of drainage efficiency or clogging of foreign matter, and the air permeability during running water cannot be secured. there were.

  Also, when these are formed to correspond to the different diameters of the horizontal pipes, a mold for the joint body of each diameter is required, so there are many types of molds and a great production cost is required. It was. Furthermore, since there are so many types, management is troublesome.

  The present invention has been developed as a result of diligent research in view of the above-described problems, and the object of the present invention is to ensure air permeability and smoothness of the entire drainage piping by installing it in a space-saving space. An object of the present invention is to provide a joint structure for drainage that can maintain a drainage function, and can secure a predetermined volume without exchanging the whole even when the pipe diameters are different, thereby ensuring an excellent ventilation / drainage function.

To achieve the above object, the invention according to claim 1, the horizontal pipe connection portions respectively provided on the lower portion drainage vertical side of the joint body and the pipe connection part erected for piping connection of the joint body, the transverse pipe The connecting portion is provided at an eccentric position with respect to the axis of the vertical pipe connecting portion, and a bulging portion is formed to bulge on one side of the horizontal pipe connecting portion, and is formed on the inner peripheral surface of the bulging portion. A drainage joint in which a substantially arcuate swirl flow path surface is formed, and an adjustment ring having a cylindrical portion is fitted to the vertical pipe connection portion, and an inner peripheral surface of the joint body is provided on an inner peripheral surface of the adjustment ring. A tapered surface portion having a tapered surface shape extending outward toward the surface side is formed along the upper end side of the adjustment ring, and the drainage stand pipe connected to the lower end side of the adjustment ring and the vertical pipe connection portion This is a drainage joint structure in which a peripheral surface is joined to an inner peripheral surface shape having substantially the same diameter .

  According to a second aspect of the present invention, a taper step portion is formed on the outer periphery of the cylindrical portion, and the taper step portion is locked to a step portion formed on the inner periphery of the vertical pipe connection portion, so that the adjustment ring is raised. It is a joint structure attached in a state where it is prevented from coming off at the pipe connection part.

  The invention according to claim 3 is a joint structure in which a ventilation mechanism is provided in the upper opening of the joint body.

  The invention according to claim 4 is a joint structure in which a connection portion for connecting an external pipe is provided at the upper opening of the joint body.

  The invention according to claim 5 is an adjusting ring used in the drainage joint structure.

  According to the first aspect of the present invention, the inner diameter of the drainage flow path of the joint body is formed to be substantially the same as the inner diameter of the thin-walled pipe when the standing pipe is a thin-walled pipe. By simply attaching an adjustment ring to the main unit, it is possible to handle thick-walled pipe connections, and when the thick-walled pipe is inserted into the connecting part, the inner diameter end of the thick-walled pipe is obstructed during drainage. Therefore, the drainage can smoothly flow down while maintaining the swirling flow. Furthermore, it is a joint that can be installed in a narrow pipe space such as under the floor of a building or in a wall, and can smoothly drain by generating a swirling flow when drainage from a horizontal pipe flows in the main body.

  According to the second aspect of the present invention, when the adjustment ring is inserted from the connection hole side, the taper step portion is locked to the step portion, so that the adjustment ring can be securely attached to the connection portion.

  According to the invention which concerns on Claim 3, the air permeability and drainage of exhaust equipment improve further, and a highly functional drainage equipment can be provided.

  According to the invention which concerns on Claim 4, it becomes possible to connect the middle position and vertical piping of standing piping, and the use value as a joint can further be raised.

  According to the invention which concerns on Claim 5, the adjustment ring used for the joint structure for drainage can be provided.

Hereinafter, preferred embodiments of an exhaust joint structure according to the present invention will be described in detail with reference to the drawings.
In FIG. 1, a drainage facility 1 is provided in a building 2 such as a detached house or an apartment house, and has a drainage standing pipe (hereinafter, standing pipe) 3 and a horizontal pipe 4. The upright pipe 3 and the horizontal pipe 4 are connected by the ventilation integrated joint of the present invention. Further, the drainage equipment 1 has an appliance drain pipe 5, which connects the drain pipe 6 such as a bathroom, a washbasin, a kitchen sink, a toilet, and the horizontal pipe 4, The drainage can flow up to the horizontal pipe 4. The trap 7 is provided in the middle of the drainage device 6 and the device drainage pipe 5.

  As shown in FIGS. 2 and 3, the ventilation-integrated joint of the present invention has a tubular joint body 10 having a drainage channel 11 therein, and a sealing member 35 is provided on the top of the joint body 10. The ventilation mechanism 13 is attached below the sealing member 35, and the lid body 14 is mounted above the sealing member 35. Further, the vertical pipe 3 is connected to the lower portion of the joint body 10, and the side pipe 4 is connected to the side portion, which is a large-diameter horizontal pipe 4a or a small-diameter horizontal pipe 4b as shown in FIG.

The joint body 10 has a double cylinder structure having an inner cylinder 41 and an outer cylinder 12 which will be described later and communicate with the ventilation mechanism 13. The joint body 10 has a vertical pipe connection part 15 (hereinafter referred to as connection part 15) for connecting the drainage vertical pipe 3 and a horizontal pipe connection part 17 (hereinafter referred to as connection part 17) for connecting the horizontal pipe 4. .
An adjustment ring 25 described later is attached to the connection portion 15, and a rounded surface portion 16 that is gently inclined from the connection portion 15 to the upper side of the outer cylinder 12 is formed.

As shown in FIG. 4, the connecting portion 17 has an axial center O _{2 that} is positioned on the outer side of a cylinder 54 that will be described later provided on the joint body 10, and the axial core O _{1 of the} connecting portion 15. Is provided at an eccentric position. For example, the connecting portion 17 is formed to have a diameter capable of connecting a large-diameter horizontal pipe 4a having a diameter of about 75 mm. Further, a bulging portion 29 is formed on one side of the connecting portion 17, and a substantially arcuate swirl flow path surface 18 is formed on the inner peripheral surface 29 a of the bulging portion 29.

  The swirl flow path surface 18 is formed in an arcuate curved surface from the inner diameter position of the connecting portion 17 to a point P on the extension line of the imaginary line L indicated by a two-dot chain line in contact with the outer diameter position of the cylindrical body 54. When the swirl flow path surface 18 is formed, the connecting portion 17 may be eccentric to the inner side of the joint body 10 (direction E in FIG. 4) in order to ensure a wide inner peripheral curved surface portion 18b. In this case, the width of the outer peripheral curved surface portion 18a of the swirling flow path surface 18 becomes narrow.

On the other hand, when the connecting portion 17 is eccentric to the outer side of the joint body 10 (direction F in FIG. 4), the outer peripheral side curved surface portion 18a of the swirl flow passage surface 18 can be secured wide, but the outer shape of the joint body 10 And the width of the inner peripheral curved surface portion 18b of the swirling flow path surface 18 is reduced.
From the above, in the present embodiment, the connecting portion 17 is arranged at a position where the inner peripheral side of the large-diameter horizontal pipe 4a is placed on the tangent L that is a virtual line to the outer diameter of the cylindrical body 54 indicated by a two-dot chain line And the width | variety of the inner peripheral side curved surface part 18b and the outer peripheral side curved surface part 18a of the turning flow path surface 18 is ensured with sufficient balance.

  With such a structure, the swirl flow path surface 18 is wide and long in the joint body 10 and a swirl flow is generated as will be described later even when the small-diameter horizontal pipe 4b is connected to the connecting portion 17. Yes. Further, the shape of the swirl flow path surface 18 is such that a molding die (not shown) can be extracted from the connection portion 17 (and the connection portion 15) when the joint body 10 is molded. By providing the point P at the limit position that can be extracted from the portion 17, the swirl flow path surface 18 from which an efficient swirl flow can be obtained can be formed wide and long.

An edge-like edge 19 is formed at the lower side edge of the swirl flow path surface 18. Since the edge-shaped edge portion 19 is hooked on the rounded surface portion 16, the swirl flow passage surface 18 can be formed wider and longer, so even when the small-diameter horizontal pipe 4b is connected, The same swirling flow can be obtained.
Moreover, when the swirl flow path surface 18 is engaged with the rounded surface portion 16, the speed of the swirling flow can be increased due to the reduced diameter of the rounded surface portion 16, and even if foreign matter is contained in the drainage, it can be quickly discharged. .

The joint body 10 is attached to the crossing position between the upper end position of the vertical pipe 3 and the horizontal pipe 4 via the connection part 15 and the connection part 17, and when drainage flows from the connection part 15 side via the horizontal pipe 4. The drainage can be made to flow from the connecting portion 17 to the standing pipe 3 while being swirled by the swirling flow path surface 18.
And the different diameter connection body 20 is detachably attached to the connection portion 17, and the small diameter horizontal pipe 4 b can be connected through the different diameter connection body 20.

  The different diameter connecting body 20 shown in FIG. 11 is mounted to connect, for example, a small-diameter horizontal pipe 4b having a diameter of about 50 mm to the connecting portion 17, and is a cross-sectional view taken along the line CC in FIG. As shown in FIG. 10 which is a figure, it has the outer diameter which can be inserted in the connection part 17, and has the connection hole 21 for small diameters for the small diameter side piping 4b connection.

The small-diameter connection hole 21 has a diameter smaller than that of the connection portion 17 and is formed at a position where the axis O ₃ is eccentric with respect to the axis O ₂ of the different-diameter connection body 20.
Thereby, when connecting the different diameter connecting body 20 to the connecting portion 17, the drainage is swirled by connecting a part of the small diameter connecting hole 21 along the swirl flow path surface 18. .

  In this case, in particular, as shown in FIG. 6, the different-diameter connection body 20 is approximately 45 ° from the position where the inner peripheral lower surface 21 a of the small-diameter connection hole 21 is along the swirl flow path surface 18 toward the swirl flow path surface 18. It is desirable to connect to the connecting portion 17 within the range T of the state where the position is located.

  A contact portion 22 with which the distal end 4c of the horizontal pipe 4 abuts is formed at the insertion side depth of the small diameter connection hole 21. Thus, when the horizontal pipe 4 is inserted into the small diameter connection hole 21, the horizontal pipe 4 is connected in a state where the horizontal pipe 4 is positioned by the contact portion 22.

  Here, FIG. 7 shows a state in which the adjustment ring 25 is attached to the joint body 10. The adjustment ring 25 is formed with a cylindrical portion 26 having a linear outer peripheral side that can be fitted to the connecting portion 15 on the outer peripheral side, and a tapered step portion 27 following the cylindrical portion 26. Further, a tapered surface portion 28 is formed on the inner peripheral side of the adjustment ring 25, and this tapered surface portion 28 can smoothly connect the drainage flow path 11 and the inner peripheral side of the vertical pipe 3 connected to the connection portion 15. It can be done.

Further, a straight portion 30 to which the cylindrical portion 26 of the adjustment ring 25 is fitted and a step portion 31 that locks the taper step portion 27 are formed at the mounting portion of the adjustment ring 25 of the joint body 10.
When the adjustment ring 25 is inserted from the connection hole side, the cylindrical portion 26 is fitted to the linear portion 30, and the taper step portion 27 is locked to the step portion 31, so that the adjustment ring 25 is prevented from coming off the connection portion 15. Installed in the finished condition. In the present embodiment, the inner diameter of the drainage channel 11 of the joint body 10 is formed to be substantially the same as the inner diameter of the thin pipe 3a when the standing pipe 3 is the thin pipe 3a. Can be made to correspond to the thick tube 3b, and when the thick tube 3b is inserted from the connecting portion 15, the inner diameter end side of the thick tube 3b does not become an obstacle during drainage. The drainage can flow smoothly while maintaining the swirling flow.

  A sealing member 35 is attached to the upper open end 10 a of the joint body 10. The sealing member 35 is formed in a substantially annular shape, and an opening portion 36 is formed at a central portion thereof, and a valve seat portion 37 is formed on the outer peripheral bottom surface side of the opening portion 36. The sealing member 35 is attached so as to be fitted from the upper opening side of the joint body 10, and after the attachment, the flange portion 38 formed on the upper portion of the sealing member 35 abuts on the opening upper end portion 10 a of the joint body 10. Are held in a predetermined mounting state. An O-ring 39 is mounted between the flange portion 38 and the opening upper end portion 10a, and the joint body 10 and the sealing member 35 are hermetically sealed by the O-ring 39. The joint member can communicate with the atmosphere through the opening 36.

  A female screw portion 40 is formed outside the opening 36, and a male screw portion 42 provided on the inner tube 41 is screwed to the female screw portion 40, whereby the inner tube 41 is attached to the sealing member 35. Integrated. Thus, the inner cylinder 41 is mounted while being aligned inwardly of the sealing member 35 by this screwing. The ventilation mechanism 13 is housed inside the inner cylinder 41.

  As shown in FIGS. 2 and 3, the ventilation mechanism 13 includes a valve body 45, a seal member 46, and a spring 47, which are attached to the inner side of the inner cylinder 41. As for the valve body 45, the shaft part 45b is droopingly formed from the center position of the substantially bulky lid part 45a, and a cylindrical guide tube 45c is formed on the outer peripheral side of the shaft part 45b. The inner diameter of the guide cylinder 45c is formed to be slightly larger than the outer diameter of the valve body holder 51 described later. The seal member 46 is formed in an annular shape by a flexible member such as rubber, and is fitted into a mounting groove 49 provided on the outer peripheral side of the lid portion 45a.

  On the other hand, a plurality of plate-like disk guides 50 are radially formed on the inner side of the inner cylinder 41 provided with the ventilation mechanism 13 so that the valve body 45 is housed and held inside the disk guide 50. It has become. In addition, a cylindrical valve body holding body 51 is integrally formed at a central position of the inner cylinder 41 at a position below the sealing member 35. A hole 52 is formed at the center of the valve body holder 51, and the shaft 45 b of the valve body 45 can be inserted into the hole 52.

  When the valve body 45 is attached to the inner cylinder 41, the shaft portion 45b is inserted into the hole 52 of the valve body holder 51, and the disc guide 50 is inserted while the valve body holder 51 is inserted into the guide cylinder 45c. At this time, the spring 47 is mounted in a state of being elastically biased between the shaft portion 45 b and the valve body holding body 51. Accordingly, in a normal state, the seal member 46 of the valve body 45 is seated on the valve seat portion 37 by the biasing force of the spring 47, and the inside of the joint body 10 is in a sealed state.

  The ventilation mechanism 13 maintains a closed state without protruding from the upper end of the joint body 10 in a normal state. On the other hand, when the inside of the joint body 10 becomes negative pressure, the valve body 45 adjusts along the valve body holder 51. The vent valve is driven to open to the inside of the joint main body 10 while compressing the spring 47 in the centered state, whereby the negative pressure in the drainage facility 1 can be reduced.

  Further, a male screw 53 is formed on the lower side of the inner cylinder 41, and a female screw of the cylinder body 54 is screwed and attached to the male screw 53. The cylindrical body 54 is suspended from the lower part of the vent valve 13 so as to communicate with the inside of the vent valve 13. Thus, by providing the cylinder body 54 (inner cylinder 41) in the joint body 10, the drainage flow path 11 is provided between the joint body 10 and the cylinder body 54 (inner cylinder 41). . As a result, at the time of drainage, the inner pipe is ventilated by the cylinder 54 (inner cylinder 41), and the air core described above is forcibly formed in the joint body 10 and smooth exhaust is performed.

  In this embodiment, the cylindrical body 54 is formed to have a predetermined length with a flexible material such as a rubber material. As shown in FIG. It is possible to prevent clogging by the foreign material 55 by being elastically deformed when it is between, and it is possible to easily restore the original shape by this elastic deformation. In this case, in a space part between the cylindrical body 54 and the joint main body 10, for example, the dimension is set so that a pseudo foreign object (for example, φ25 × 80 mm) 55 formed by a hard sponge sufficiently impregnated with water can pass. Yes.

  Further, the outer circumferential groove 56 is formed on the outer circumferential side of the cylindrical body 54, and when the foreign object 55 comes into contact with the cylindrical body 54, the cylindrical body 54 is bent so that the gap between the outer circumferential grooves 56 is narrowed. Improved. The cylinder body 54 may be integrated with the inner cylinder 41 by another attachment means such as concave-convex fitting without being limited to screwing, or may be formed integrally with the inner cylinder 41.

  The lid 14 is formed in a substantially disk shape, and a female screw 60 is formed on the inner peripheral side. The lid body 14 is detachable from above the sealing member 35 attached to the upper portion of the joint body 10 by screwing the female screw 60 to a male screw 61 formed on the joint body 10. After the lid body 14 is attached, the sealing member 35 is fixed so as to be sandwiched between the lid body 14 and the joint body 10.

  A plurality of opening windows 62 are formed at equal intervals on the side of the lid body 14, and guide fins 63 are formed between the opening windows 62 in the centripetal direction to form a lateral ventilation path 64. A cover portion 65 is formed on the upper portion of the lid body 14, and the cover portion 65 covers the opening 36 of the sealing member 35 from above so as to prevent sound from being transmitted to the flooring or the like. Further, the cover 65 prevents entry of dust such as dust.

  The lid 14 can be omitted. In this case, the sealing member 35 is naturally removed by forming a female screw (not shown) that can be screwed to the male screw 61 of the joint body 10 in the sealing member 35. Can be prevented.

  In the above embodiment, the case where the small-diameter connection hole 21 of the different-diameter connection body 20 connected to the joint body 10 is for connection of the small-diameter horizontal pipe 4b has been described. The diameter of the small-diameter connection hole 21 is It can also be formed to have an arbitrary dimension such as a diameter between the large-diameter horizontal pipe 4a and the small-diameter horizontal pipe 4b.

Next, the operation and action of the vent integrated joint according to the present invention in the above embodiment will be described.
First, when connecting a large diameter side branch pipe (for example, φ75 mm) 4 a of the horizontal pipe 4 to the joint body 10, the large diameter horizontal pipe 4 a is directly inserted into the connection portion 17 of the joint body 10. Connect. Further, the vertical pipe 3 is directly inserted and connected to the connection portion 15, whereby the large-diameter horizontal pipe 4 a and the vertical pipe 3 are connected by the joint body 10.

In the drainage facility 1, for example, when drainage flows out from the equipment 5 on the top floor, the drainage flows into the horizontal pipe 4 via the equipment pipe 4, and the intersection of the horizontal pipe 4 and the upper end position of the drainage stack 3 It is guided to the position and flows down into the joint body 10 disposed at this position. The drainage flows along the inner wall after flowing into the joint body 10, and this drainage swirls in the vertical pipe 3 because the axis O2 of the connecting portion 17 is eccentric with respect to the axis O1 of the connecting portion 15. It flows as a stream. At this time, drainage proceeds along the substantially circular arc-shaped swirl flow path surface 18 and is rectified, so that drainage from the instrument 5 is smoothly performed. Further, by providing the joint body 10 with the rounded surface portion 16, the revolving of the swirling flow is prevented. Furthermore, the entire inner wall of the joint body 10 is washed away by the generation of the swirling flow, and adhesion of dirt and the like is prevented.

  When negative pressure is generated in the drainage facility 1 due to the drainage of the drainage, the valve body 45 of the vent valve 13 which has been kept closed until then is resisted by the spring force of the spring 47 as shown in FIG. The opening 36 is opened by moving downward, and the atmosphere flows into the drainage facility 1 from the opening 36. As described above, when negative pressure is generated, the vent valve 13 is driven to open according to the pressure difference between the negative pressure and the atmospheric pressure, and the valve is opened, so that the air is taken into the drainage facility 1. The pressure difference within 1 is reduced and the negative pressure is reduced. At this time, the sealing water in the trap 7 of the instrument 5 that is not drained is also prevented from being reduced by negative pressure.

  When the pressure difference in the drainage facility 1 is reduced by the valve opening operation, the vent valve 13 is closed. The valve closing operation is performed by the valve body 45 moving in the closing direction by the elastic force of the spring 47 and the seal member 46 of the valve body 45 seated on the valve seat portion 37. When the valve body 45 is seated, the inside of the joint body 10 returns to a sealed state, and the odor in the drainage facility 1 is prevented from escaping to the atmosphere side (under the floor or the like).

Subsequently, a case where a small-diameter horizontal branch pipe (for example, φ50 mm) 4b is connected to the joint body 10 as the horizontal pipe 4 will be described. In this case, the different-diameter connection body 20 is visually connected to the connection portion 17 so that the inner peripheral lower surface 21a is within the range T in FIG. In the present embodiment, as shown in FIG. 6A, the different-diameter connection body 20 is connected to the connection portion 17 so that the inner peripheral lower surface 21 a is positioned along the swirl flow path surface 18.
The small-diameter horizontal pipe 4b is inserted until the tip 4c contacts the contact portion 22 of the small-diameter connection hole 21. The vertical pipe 3 is directly inserted and connected to the connecting portion 15 in the same manner as described above.

  When drainage flows into the joint body 10 from the small-diameter horizontal pipe 4b in this state, as shown in FIGS. 4 and 5, when the drainage flows from the inner diameter R of the small-diameter horizontal pipe 4b indicated by a broken line, the swirl flow path surface A large amount flows in the state along 18 and flows in the joint body 10 as a swirl flow. At this time, since the swirl flow path surface 18 is formed in a substantially arc shape along the inside of the joint body 10 from the connection portion 17 for the large-diameter horizontal pipe 4a, the drainage is an arrow M which is the axial direction of the small-diameter horizontal pipe 4b. Flow in the direction of arrow N, which is guided by the inner peripheral curved surface of the swirling flow path surface 18 and flows from the inner peripheral curved surface portion 18b of the swirling flow path surface 18 to the outer peripheral curved surface portion 18a. The ratio of becomes larger.

  In addition, as described above, since the different diameter connecting body 20 is connected so that the inner peripheral lower surface 21a is within the range T, a part of the small diameter connecting hole 21 is continuously provided along the swirl flow path surface 18. Thus, it is possible to generate a large swirling flow whose diameter is further expanded in the centrifugal direction. Thus, in this embodiment, since the inner peripheral lower surface 21 a is provided in a state along the swirl flow path surface 18, the unillustrated drop until the drainage falls from the small diameter connection hole 21 to the swirl flow path surface 18. The distance can be shortened, and the occurrence of turbulent flow during drainage inflow can be suppressed.

Furthermore, since the edge-like edge 19 is formed on the lower side edge of the swirl flow path surface 18, the rate at which the drainage falls into the joint body 10 can be reduced, and the edge is formed in a round shape. Compared to the above, the ratio of the swirl flow is increased by introducing more drainage to the swirl flow path surface 18 side.
The vent valve 13 operates in the same manner as when the large-diameter horizontal pipe 4a is connected even when the small-diameter horizontal pipe 4b is connected, and the negative pressure of the drainage facility 1 is reduced.

  As described above, the ventilation integrated joint according to the present invention is provided with the connection portion 15 and the connection portion 17 in the joint body 10 having the ventilation mechanism 13, and the connection portion 17 can be connected to the small diameter horizontal pipe 4b. Since different diameter connecting bodies 20 having holes 21 can be connected, the horizontal pipes 4 having different diameters from the small diameter horizontal pipe 4b to the large diameter horizontal pipe 4a can be connected using one joint body 10. .

  When drainage flows into the joint body 10, even when the small-diameter horizontal pipe 4 b is connected using the different-diameter connecting body 20, the shaft core S of the joint body 10 is connected in the same manner as when the large-diameter horizontal pipe 4 a is connected. A swirling flow having an air core at the center is generated and air supply to the standing pipe 3 is ensured. Therefore, drainage from the horizontal pipe 4 is performed smoothly, and the ventilation / drainage function of the joint body 10 is not impaired. In addition, the foreign matter 55 contained in the drainage is prevented from being clogged in the joint body 10, and the ventilation valve 13 operates smoothly to ensure air permeability during running water.

  In addition, since one type of joint body 10 can be used, the number of types of molds can be prevented from being increased, and the connection of the horizontal pipe 3 from a small diameter to a large diameter can be supported while suppressing an increase in production cost. It is a ventilation integrated joint that is easy to manage.

  The vent valve 13 normally maintains a closed state without protruding from the upper end of the joint body 10, and when the inside of the joint body 10 becomes negative pressure, the valve body 45 is driven to open inward to vent. Therefore, the vent valve 13 does not extend above the joint body 10, and the height from the connecting portion 17 of the horizontal pipe 4 to the apex portion of the sealing member 35 is prevented. The whole can be made compact. Therefore, for example, it is not restricted by the size of the narrow underfloor space, and can be arranged while maintaining a predetermined water passage diameter, and the installation space can be reduced to ensure a large living space.

FIG. 12 shows an embodiment of a joint for different diameter pipes. In this embodiment, the same parts as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The joint body 70 of the joint for different diameter pipes includes a vertical pipe connection portion 15 for connecting the vertical pipe 3, a horizontal pipe connection portion 17 for connecting the horizontal pipe 4, and a connection portion 71 for connecting an external pipe (not shown). have. As in the above-described embodiment, the connection portion 17 is eccentric with respect to the connection portion 15, and a substantially arcuate swirl flow path surface 18 is formed on the inner peripheral surface 29 a of the bulged portion 29 that is bulged. ing. Moreover, the different diameter connection body 20 is attached to the connection part 17 so that attachment or detachment is possible.

Similar to the above-described embodiment, the different-diameter connection body 20 is formed with a small-diameter connection hole 21 at a position eccentric with respect to the axis O ₂ , and a part of the small-diameter connection hole 21 is formed on the swirl flow path surface 18. The drainage is swirled by connecting them continuously.
Due to this internal structure, the joint for different diameter pipes can exhibit a drainage function similar to that of the above-mentioned vent-integrated joint, and can generate an air core near the center due to the generation of swirling flow during drainage. The ventilation function at the time can also be secured.

Since this joint for different diameter pipes has a structure in which an external pipe can be connected to the connection portion 71, it is possible to connect the intermediate position of the vertical pipe 3 and the horizontal pipe 4. At this time, by using the different diameter connector 20. It can also be used with horizontal pipes 4 of various size diameters.
Therefore, this joint for different diameter pipes can be widely applied to various pipes as pipe joints for connecting different diameter pipes. For example, in the above embodiment, the vertical pipe 3 and the horizontal pipe 4 in the drainage channel 1 By connecting all the connection locations using one type of joint for different diameter pipes, it is possible to secure high ventilation / drainage performance while suppressing cost increase.

  Furthermore, by combining this joint for different diameter pipes and the above-mentioned integrated vent joint, the ventilation and drainage of the drainage facility 1 can be further improved, and a highly functional drainage facility 1 can be constructed by a synergistic effect thereof. Can do.

It is the schematic explanatory drawing which showed the whole drain pipe. 1 is a partially cutaway perspective view showing a preferred embodiment of a vent-integrated joint of the present invention. It is a longitudinal cross-sectional view of FIG. It is AA expanded sectional drawing of FIG. FIG. 5 is a partially omitted perspective view of FIG. 4. It is the front view which showed the state which mounted | wore the different diameter connection body. It is the B section enlarged view of FIG. It is an enlarged plan view of the ventilation integrated joint of the present invention. It is CC sectional drawing of FIG. FIG. 9 is a partially omitted DD end view of FIG. 8. It is the perspective view which showed the different diameter connection body. It is a partially cutaway perspective view showing one embodiment of a joint for different diameter pipes.

3 Drainage standpipe 4 Horizontal piping 10, 70 Joint body 11 Drainage flow path 12 Outer cylinder 13 Ventilation valve (ventilation mechanism)
DESCRIPTION OF SYMBOLS 15 Vertical piping connection part 17 Horizontal piping connection part 18 Swirling flow path surface 25 Adjustment ring 26 Cylinder part 27 Tapered step part 28 Tapered surface part 29 Bulging part 31 Step part 71 Connection part

Claims (5)

Provided lateral pipe connecting portion respectively to lower the drainage vertical side of the joint body and the pipe connection part erected for piping connection of the joint body, the lateral pipe connections are polarized with the axis of the stand pipe connection portion A drainage joint provided at a core position and having a bulging portion formed on one side of the horizontal pipe connecting portion, and a substantially arc-shaped swirling flow path surface formed on the inner peripheral surface of the bulging portion. and fitting the adjustment ring having a cylindrical portion in the stand pipe connecting portion, the the inner peripheral surface of the adjusting ring, the tapered surface portion of the tapered surface shape that extends outwardly toward the inner peripheral surface of the joint body It is formed along the upper end side of the adjustment ring, and the lower end side of the adjustment ring and the inner peripheral surface of the drainage stack pipe connected to the vertical pipe connection portion are joined to an inner peripheral surface shape having substantially the same diameter. Drainage joint structure characterized by   A taper step was formed on the outer periphery of the cylindrical portion, and the taper step was locked to a step formed on the inner periphery of the vertical pipe connection portion, and the adjustment ring was prevented from being detached from the vertical pipe connection portion. The joint structure for drainage according to claim 1 attached in a state.   The drainage joint structure according to claim 1 or 2, wherein a ventilation mechanism is provided in an upper opening of the joint body.   The drainage joint structure according to claim 1 or 2, wherein a connection portion for connecting an external pipe is provided at an upper opening of the joint body.   The adjustment ring used for the said joint structure for drainage in any one of Claims 1 thru | or 4.

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