JP2013024010A - Ventilation built-in joint and attaching structure of joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation built-in joint which is provided between drainage vertical piping and horizontal piping, is installable in a narrow installation space by shortening the entire length while reducing a negative pressure, generating rotational flow inside and securing smooth drainage, and is easily attachable with high workability while securing soundproofness, and an attaching structure of the joint.SOLUTION: A joint body 20 includes a ventilation mechanism 22, a vertical piping connection part 25 and a horizontal piping connection part 26, the horizontal piping connection part 26 is at an eccentric position to an axis P of the vertical piping connection part 25, and a swollen part 33 is swollen and formed on one side of the horizontal piping connection part 26. On an inner peripheral side of the swollen part 33, a rotational flow path surface 27 roughly in a circular arc shape and a gently inclined reduced diameter trunk surface 30 continued to it are formed. At least a length equal to or more than 50% of an aperture D of horizontal piping 11 is secured for a separation distance S from an outer peripheral surface 23a of an inner cylinder 23 to the rotational flow path surface 27 and the reduced diameter trunk surface 30 so that drainage flows by the rotational flow, and a height H in the direction of the axis P of the reduced diameter trunk surface 30 is formed in a shortened shape.

Description

  The present invention is provided at a connection position between a drainage standpipe and a horizontal pipe provided in a drainage facility, and reduces the negative pressure generated in the drainage pipe and smoothes the drainage operation in the drainage pipe. This relates to the mounting structure.

  Conventionally, there is a known drainage joint that is provided at the connection position between the drainage standpipe and the horizontal pipe in the installation facilities such as detached houses and apartment houses, and that ensures air permeability during drainage while generating swirling flow in the main body. (For example, refer to Patent Document 1). In this type of drainage joint, the joint body has a double pipe structure consisting of an inner cylinder and an outer cylinder, and a connecting cylinder part is formed on the bottom side of the joint body. Connected to vertical piping. Between the inner cylinder and the outer cylinder of the joint body, a connecting pipe part for connecting the horizontal pipe is integrally provided at a position eccentric with respect to the joint body, and the horizontal pipe from the drainage device is connected to this connecting pipe part. Is done.

  In the venting device of Patent Document 2, a vent valve is built in an inner cylinder of a double pipe structure of an inner cylinder and an outer cylinder, and in the unlikely event that the valve function is hindered, the vent valve has a check function. And has a function of preventing the occurrence of water leakage from the vent valve. This ventilating device can be made compact as a whole, and can be installed in a narrow piping space under the floor or in the wall while ensuring air permeability during drainage. As a result, when negative pressure is generated in the drainage facility, it is vented by the ventilation valve to reduce this negative pressure, and when drainage flows from the drainage device into the main body via the horizontal pipe, this drainage is swirled. Smooth drainage is possible by flowing while forming an air core as a flow.

  FIG. 7 shows a case where such a joint device is attached to a drainage standpipe. In the figure, the joint device 1 is attached in a state of being stored at a predetermined installation height from the floor upper surface 2. In this case, the end surface portion 4 of the drainage stack 3 provided in the floor upper surface 2 is cut to a height lower than the floor top surface 2, and the bottom side of the outer cylinder portion 4 of the coupling device 1 is connected to the drainage stack 3. It is common to connect and attach the bottom side in a state of being inserted lower than the floor surface 2. As an installation procedure in this case, the end surface portion 3a of the drainage stack 3 is cut in accordance with the installation height of the joint device 1, and the height of the drainage stack 3 with respect to the insertion hole 5 provided in the floor upper surface 2 is adjusted. . Subsequently, the adhesive member 7 is applied to the outer peripheral side of the bottom inner surface 6 and the end surface portion 3a of the joint device 1 in a state where the outer cylinder portion 4 of the joint device 1 is inserted from the insertion hole 5 and temporarily fixed to the drainage stack 3. Then, the joint device 1 is fixed to a predetermined height by joining them. At that time, the outer periphery of the drainage stack 3 is covered with the soundproof member 8 up to the bottom surface side of the outer cylinder portion 4 of the joint device 1, and after the joint device 1 is attached, the clearance between the joint device 1 and the insertion hole 5 is sealed. The sealing process is performed.

JP 2002-332671 A JP 2008-256114 A

However, the drainage joint of Patent Document 1 is not premised on being installed in a narrow piping space under the floor or in the wall. Therefore, the vertical dimension of the whole joint is long, and it becomes difficult to provide this drainage joint in a narrow piping space.
On the other hand, the venting device of the same document 2 can be installed in a narrow installation space because it is made compact as a whole, and can smoothly drain by ensuring air permeability during drainage. However, even in this ventilation device, the outer tube of the double pipe is formed vertically long in order to secure a swirling flow due to the double pipe structure, and the following problems may occur. That is, when the ventilation device 1 shown in FIG. 7 is provided in a narrow piping space such as under the floor, the outer cylinder portion 4 of the ventilation device 1 is inserted into the floor upper surface 2 in order to install in the predetermined piping space. Since it becomes necessary to perform joining work in the state where the drainage stack 3 and the joint device 1 are fixed, two or more workers are required to perform this joining work. Although it is possible to perform the joining work alone, in that case, a jig for temporarily fixing the drainage stack 3 and the coupling device 1 is required. Furthermore, since the end surface side of the outer cylinder part 4 is arrange | positioned inside the floor upper surface 2 at the time of joining operation | work, adjustment work of the installation height of the coupling apparatus 1 becomes troublesome. At this time, since the bonding position of the outer cylinder portion 4 and the drainage stack 3 is also on the inner side of the floor surface 2, it is difficult to confirm the joining state, and the adhesive member is attached to the outer peripheral side of the drainage stack 3 while temporarily fixing them. The operation of applying 7 is also difficult. Furthermore, since the soundproofing member 8 is covered up to the bottom surface side of the outer cylinder portion 4 disposed partway along the floor upper surface 2, the soundproofing member 8 is not sufficiently covered, and the soundproofing property may be deteriorated. Since the sealing process is performed after the coupling device 1 is fixed, there is a problem that the coupling device 1 becomes an obstacle to make the processing operation difficult.

  The present invention has been developed to solve the above-described problems, and the object of the present invention is to reduce the negative pressure by creating a swirling flow inside the drainage vertical pipe and the horizontal pipe. It can be installed in a narrow installation space by reducing the overall length while ensuring smooth drainage, and it can be installed in a narrow installation space. It is to provide an installation structure.

  In order to achieve the above object, the invention according to claim 1 provides a joint body having a ventilation mechanism provided with a vertical pipe connection part for connecting a drainage vertical pipe and a horizontal pipe connection part for connecting a horizontal pipe. Is provided at an eccentric position with respect to the axis of the pipe connecting portion, and a bulging portion is formed to bulge on one side of the horizontal pipe connecting portion, and a substantially arcuate shape is formed on the inner peripheral side of the bulging portion. The swirl flow path surface and the diameter-reduced body surface gently inclined following the swirl flow path surface are formed, and from the outer peripheral surface of the inner cylinder formed in communication with the ventilation mechanism to the swirl flow path surface and the diameter-reduced body surface. Is maintained at a length that allows the drainage to flow in a swirling flow at least 50% of the diameter of the horizontal pipe, and the height of the reduced-diameter body surface in the axial direction is maintained. It is a ventilation integrated joint formed in a shortened shape.

  According to a second aspect of the present invention, a joint body having a ventilation mechanism is provided with a vertical pipe connection part for connecting a drainage vertical pipe and a horizontal pipe connection part for connecting a horizontal pipe, and the horizontal pipe connection part is a shaft of the vertical pipe connection part. Provided in an eccentric position with respect to the core, and a bulging portion is formed to bulge on one side of the horizontal pipe connecting portion, a substantially arc-shaped swirling flow path surface on the inner peripheral side of the bulging portion, and the swirling The diameter-reduced body surface that gently slopes is formed following the flow path surface, and the distance from the lower end of the inner diameter of the horizontal pipe to the end of the diameter-reduced body surface is ensured to be 40% or more of the diameter of the horizontal pipe. This is a vent-integrated joint that maintains a length that allows the drainage to flow in a swirling flow, and that the height of the reduced diameter body surface in the axial direction is formed in a shortened shape.

  The invention according to claim 3 is a ventilation-integrated joint in which the joint body has a double pipe structure having an inner cylinder and an outer cylinder communicating with the ventilation mechanism, and the outer diameter of the inner cylinder is reduced to increase the separation distance. is there.

  According to a fourth aspect of the present invention, the vertical pipe connecting portion is provided at an outer diameter that can be inserted inside the drainage standing pipe, and an annular flange portion that abuts the pipe end of the drainage standing pipe is formed at the upper portion of the standing pipe connecting portion. This is a ventilation integrated joint.

  The invention according to claim 5 is a ventilation-integrated joint in which a diameter-expanded portion that gradually widens toward the end surface is provided on the inner periphery of the vertical pipe connecting portion.

  In the invention according to claim 6, the ventilation mechanism normally maintains a closed state without protruding from the upper end of the joint body, and when the joint body becomes negative pressure, the valve body of the ventilation mechanism is This is a vent-integrated joint that is a vent valve that is driven to open inward.

  In the invention according to claim 7, the pipe end portion of the drainage standing pipe is provided in the vicinity of the floor surface of the flooring material or on the upper side of the floor surface, and the standing pipe connecting part of the ventilation integrated joint is connected to the drainage standing pipe. This is a fitting mounting structure.

  The invention according to claim 8 is an attachment structure for a joint in which a vertical pipe connection portion is inserted and joined to an inner peripheral surface of a drainage vertical pipe.

According to the invention which concerns on Claim 1 or 2, it arrange | positions between the drainage standpipe and horizontal pipe of a drainage equipment via a vertical pipe connection part and a horizontal pipe connection part, and drainage equipment by the ventilation mechanism provided in the inside This is a vent-integrated joint that ensures air permeability when negative pressure is generated in the pipe, reduces negative pressure, and generates a swirling flow in the main body when drainage flows from the horizontal pipe, allowing smooth drainage. Thus, while ensuring the air permeability and drainage, the overall height can be shortened and the system can be installed in a narrow installation space such as under the floor, ceiling, or wall of a building. Since the joint body can be joined to the drainage standing pipe arranged near the floor surface or above the floor without inserting it into the flooring material, the drainage standing pipe can be easily constructed with high workability while ensuring soundproofing with the soundproofing material. Can be installed on.
Moreover, even when the height of the diameter-reduced body surface in the axial center direction is shortened, the drainage performance due to the swirling flow during drainage can be maximized, and the wastewater flowing from the horizontal pipe connection portion is reduced from the swirling flow path surface. It can drain to the vertical pipe connection part side without a delay through the diameter body part surface.

  According to the invention of claim 3, since the drainage can flow smoothly while generating an air core in the joint body, the proportion of the swirling flow is increased by guiding the drainage in the centrifugal direction in the joint body, Even when the height of the diameter-reduced body portion is short, smooth drainage is possible while reliably generating a swirling flow.

  According to the invention which concerns on Claim 4, when the standing pipe connection part of a joint main body is inserted in drainage standpipe, it positions by the annular collar part of a standpipe connection part contacting the pipe end part of drainage standpipe. The joint body can be attached to the drainage standing pipe at a predetermined installation height.

  According to the fifth aspect of the present invention, the joint body can be attached while smoothing the level difference between the drainage standpipe and the standpipe connection part, so that the swirl flow is prevented from being disturbed and smoothly flows to the drain standpipe. Can do.

  According to the invention of claim 6, the negative pressure in the joint body is effectively reduced with high efficiency and smooth drainage is performed, and the valve element moves toward the inclusion side of the vent valve when negative pressure is generated. Thus, the negative pressure is reduced, so that the projecting portion on the upper side of the vent valve can be reduced and the overall compactness can be maintained.

  According to the invention according to claim 7, the installation work of the drainage standing pipe is completed before the fitting main body is installed without requiring temporary fixing, and the standing pipe connecting portion can be connected to this drainage standing pipe, It is possible to easily and firmly provide a ventilation-integrated joint having a predetermined installation height by one operator without the need. In addition, the installation work can be easily performed while adjusting the installation height with respect to the pipe end of the drainage pipe above the floor surface, and the installation work can be performed while checking the adhesive joint location. It can be installed while checking the condition. Since the soundproofing material can be coated on the entire through hole of the flooring material, this soundproofing material exhibits a high soundproofing property, and since the sealing process can be performed at the time of construction of the drainage standing pipe, the processing work becomes easy.

  According to the invention which concerns on Claim 8, it can apply | coat an adhesive agent to the internal peripheral surface of drainage standpipe, and can insert and join a standpipe connection part, and it can connect a ventilation integrated joint to the limit, without providing an allowance for bonding to drainage standpipe. Can be installed at a low level. Moreover, even when the pipe end of the drainage stack is positioned below the floor surface, the adhesive can be easily applied to the inner peripheral surface of the drainage stack.

It is a partially notched front view which shows the joining state of the ventilation integrated joint of this invention. It is a partially notched front view which shows the valve open state of the ventilation integrated joint of FIG. It is a partially cutaway perspective view showing a ventilation integrated joint. It is sectional drawing which shows a ventilation integrated joint. FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4. It is a schematic cross section which shows the joining state of a ventilation integrated joint. It is a partially notched front view which shows the conventional ventilation integrated joint apparatus.

  DESCRIPTION OF EMBODIMENTS Embodiments of a ventilation-integrated joint and a joint mounting structure according to the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a joined state of a ventilation-integrated joint, FIG. 3 shows a partially cutaway perspective view of the ventilation-integrated joint, and FIG. 4 shows a sectional view of the ventilation-integrated joint.

  In the figure, the ventilated integrated joint of the present invention is connected between a drainage standpipe (hereinafter referred to as a standpipe) 10 and a horizontal pipe 11 of a drainage facility (not shown). The drainage facility is provided, for example, in the vicinity of the floor surface 13 of the flooring 12 in a detached house or a housing such as an apartment house, or above the floor surface 13, or in the ceiling or wall surface. Drainage from drainage devices 14 such as bathrooms, washbasins, kitchen sinks, toilets and the like can be allowed to flow from the horizontal pipe 11 to the drainage standpipe 10 through a vent-integrated joint.

  The ventilation integrated joint of the present invention has a cylindrical joint body 20 shown in FIGS. 1 and 3, a drainage channel 21 is formed inside the joint body 20, and a ventilation mechanism 22 is provided. It has been. The joint body 20 has a double pipe structure having an inner cylinder 23 and an outer cylinder 24 communicating with the ventilation mechanism 22, a vertical pipe connecting portion 25 for connecting the vertical pipe 10 at a lower portion thereof, and a horizontal pipe at a side portion thereof. A horizontal pipe connecting portion 26 for connecting 11 is provided. As will be described later, the joint main body 20 is attached to the crossover position between the upper end position of the vertical pipe 10 and the horizontal pipe 11 via the vertical pipe connection part 25 and the horizontal pipe connection part 26. When drainage flows into the connection portion 26, the drainage is caused to flow by a swirl flow on the swirl flow path surface 27 formed inside the joint body 20 and drained from the standpipe connection portion 25 to the standpipe 10. Yes. A sealing member 28 is provided on the upper side of the joint body 20, and a ventilation mechanism 22 is provided below the sealing member 28. A lid 29 is mounted on the upper side of the sealing member 28.

  The vertical pipe connecting portion 25 at the lower part of the joint body 20 is formed in a cylindrical shape via a reduced diameter body surface 30 formed so as to be gently inclined following the swirl flow path surface 27, and the pipe end 10 a of the vertical pipe 10. It is provided in the outer diameter which can be inserted in. On the inner peripheral side of the vertical pipe connecting portion 25, there is provided a diameter-expanded portion 31 that gradually spreads toward the end surface side by a larger radius. An annular flange 32 is formed in the vicinity of the boundary with the swirl flow path surface 27 on the outer peripheral side of the vertical pipe connecting portion 25, and when the vertical pipe connecting portion 25 is inserted into the vertical pipe 10, the annular flange 32 is formed of the vertical pipe. It can come into contact with the tube end 10a.

The horizontal pipe connecting portion 26 on the side of the joint body 20 is provided around an axis Q that is eccentric with respect to the axis P of the vertical pipe connecting portion 25. A bulging portion 33 bulges on one side of the horizontal pipe connecting portion 26, and a substantially arcuate swirl flow path surface 27 is formed on the inner peripheral side of the bulging portion 33.
In FIG. 5, the swirl flow path surface 27 has an outer peripheral curved surface portion 34 and an inner peripheral curved surface portion 35, and these widths can be adjusted according to the formation position of the horizontal pipe connecting portion 26. The swirl flow path surface 27 of the present embodiment extends from the position where the virtual line L comes into contact to the outer diameter position of the horizontal pipe connection part 26 when the virtual line L is extended from the inner diameter position of the horizontal pipe connection part 26. By forming the swirl flow path surface 27 in this way, a well-balanced outer peripheral curved surface portion 34 and inner peripheral curved surface portion 35 are formed.

  As shown in FIG. 4, the separation distance S from the outer peripheral surface 23a of the inner cylinder 23 to the swirl flow path surface 27 and the reduced diameter body surface 30 is a length that allows the drainage from the horizontal pipe 11 to flow in swirl flow. It has become. Specifically, the separation distance S is ensured to be at least 50% or more of the diameter (inner diameter) D of the horizontal pipe 11. Thus, by ensuring the separation distance S to be equal to or greater than a predetermined length, it is possible to shorten the height H of the diameter-reduced body surface 30 in the axis P direction. The separation distance S is increased by reducing the outer diameter of the inner cylinder 23.

In FIG. 1, in order to allow the drainage from the horizontal pipe 11 to flow in a swirl flow while shortening the height H, the distance H ₁ is defined as the distance H ₁ from the horizontal pipe inner diameter lowermost end 11 a to the reduced diameter body surface lowermost end 30 a. ₁ may be provided at 40% or more of the diameter D of the horizontal pipe. Also in this case, the drainage flows smoothly by the swirling flow, as in the case where the distance S between the shafts is ensured to be 50% or more of the diameter D of the horizontal pipe. In this case, the distance H ₁ may be a length up to about 60% of the diameter D of the horizontal pipe 11, and 0.4 × the diameter D of the horizontal pipe ≦ the distance H ₁ ≦ 0.6 × the diameter D of the horizontal pipe. Thus, the swirl flow can be effectively generated.

  At this time, when a height distance from a distal end opening 52a of the cylinder 52 to be described later to the lowermost inner diameter 11a of the horizontal pipe is C, if the height distance C is too large, the flow from the horizontal pipe 11 is vented. The risk of entering the mechanism 22 increases. Therefore, it is desirable to keep the height distance C small. In this case, the collision of the swirling flow can be avoided by reducing the ventilation opening portion in the vicinity of the swirling flow, and blockage of the vent opening portion by the swirling flow is prevented. Can do. The height distance C is preferably about 20% of the diameter D of the horizontal pipe 11, and at this time, the drainage capacity is further improved by the ventilation opening portion having such a size that a sufficient ventilation amount can be obtained.

The ventilation-integrated joint secures an axial distance S of 50% or more of the diameter D of the horizontal pipe, a diameter E described later of, for example, φ20 mm or more, and a height distance C of 20% or more of the diameter D of the horizontal pipe, a distance H _1. Is 40% or more of the diameter D of the horizontal pipe, the swirling flow can be generated most effectively while the height H is shortened and the drainage can be efficiently flowed.

Here, an example of a comparative study on the distance H ₁ and the height distance C. The test method was a low flow drainage load from the fourth floor, and the pressure displacement of the first to third floors was measured. The size of the specimen-integrated vent joint is 75A (joint body) x 75A (lateral pipe).
In Comparative Test 1, the diameter E of the cylinder 20 to a minimum of 20 mm in diameter, 33% of the height distance caliber C the lateral pipe D (φ83mm in VU tube), the distance _{H 1} was 12% of the diameter D.
In Comparative Test 2, the diameter E was set to 30 mm, and the height distance C was set to 42% of the diameter D of the horizontal pipe. The distance _{H 1} was left 12% of the diameter D.

  As a result of these comparative tests, the pitch of the swirling flow passing through the reduced diameter body surface 30 is narrow, the swirling flow collides with the fluid flowing into the swirling flow path surface 27 from the horizontal pipe 11, and the collided swirling flow becomes a cylinder. The front end opening 52a of the body 52 is blocked. As a result, in the comparative test, a sufficient air flow rate could not be obtained, and the effect of improving the drainage capacity was lost.

On the other hand, in the test of the embodiment related to the present invention, the diameter E was suppressed to φ30 mm, and the height distance C was also suppressed to 18% of the configuration D of the horizontal pipe which is the same as the conventional technology (see FIG. 7). On top of that, the distance H ₁ in the prior art of FIG. 7 at the 90% diameter D, was suppressed to 46%. According to this embodiment, the collision of the swirling flow can be prevented, the vent hole is not blocked, and the drainage capacity substantially similar to that of the prior art can be obtained while suppressing the height.

In the above description, the ratios of the distances C, H ₁ , and S with respect to the diameter D of the horizontal pipe are substantially equal to the diameter of the joint body and the horizontal pipe, such as 75A for the joint body and 75A for the horizontal pipe. It is a numerical value applied in the same case.

  The inner cylinder 23 is attached to the joint body 20 via a sealing member 28, and the sealing member 28 is attached to the opening upper end 20 a of the joint body 20. The sealing member 28 is formed in a substantially annular shape, and an opening 40 is formed at the central portion thereof, and a valve seat 41 is formed on the outer peripheral bottom surface side of the opening 40. The sealing member 28 is attached so as to be fitted into the opening upper end portion 20a of the joint body 20. After the attachment, the hook-like portion 42 formed on the upper side of the sealing member 28 contacts the opening upper end portion 20a of the joint body 20. It contacts and is kept in a predetermined attachment state. An O-ring 43 is mounted between the flange 42 and the opening upper end 20a, and the O-ring 43 hermetically seals between the joint body 20 and the sealing member 28. The joint body 20 can communicate with the atmosphere through the opening 40 of the sealing member 28.

  A female screw portion 45 is formed outside the opening 40, and a male screw portion 46 provided on the inner tube 23 is screwed to the female screw portion 45, whereby the inner tube 23 is integrated with the sealing member 28. The inner cylinder 23 is mounted in an aligned state on the inner side of the sealing member 28 by screwing the external thread portion 46 and the internal thread portion 45 as described above. A ventilation mechanism 22 is housed inside the inner cylinder 23.

  A male screw 50 is formed on the lower side of the inner cylinder 23, and a cylindrical body 52 is attached by screwing a female screw 51 to the male screw 50. The cylindrical body 52 is formed to hang from the lower portion of the ventilation mechanism 22 so as to communicate with the inside. By providing the cylinder body 52 (inner cylinder 23) in the joint body 20, the drainage flow path 21 is formed between the joint body 20 and the cylinder body 52 (inner cylinder 23). When draining from the drainage channel 21, the inner pipe is ventilated by the cylinder 52 (inner cylinder 23), and an air core is forcibly formed in the joint body 20, so that smooth exhaust is performed.

  The cylindrical body 52 is formed of a flexible material such as a rubber material to a predetermined length, and when the foreign matter 53 in the drainage is between the cylindrical body 52 and the inside of the joint body 20 as shown in FIG. The cylindrical body 52 is elastically deformed by its flexibility and prevents clogging with the foreign matter 53. After the foreign matter 53 flows, the cylindrical body 52 is easily restored to its original shape by elastic deformation. The cylindrical body 52 is not limited to being attached by screwing, and may be integrated with the inner cylinder 23 by another attaching means such as concave-convex fitting, or may be formed integrally with the inner cylinder 23.

  In the ventilation integrated joint in the present embodiment, the diameter E of the cylindrical body 52 is adjusted in order to shorten the height H of the diameter-reduced body portion surface 30 in the direction of the axis P, and thereby the drainage channel 21 is not shown. The opening area is secured. That is, by reducing the diameter E of the cylindrical body 52, the length of the separation distance S from the outer peripheral surface 23a of the inner cylinder 23 to the turning flow path surface 27 and the reduced diameter body surface 30 is increased. Further, the shape of the diameter-reduced body portion surface 30 is an arc shape that expands to the outer diameter side, and this also increases the length of the separation distance S. In this way, by adjusting the size of the diameter E of the cylindrical body 52 and the shape of the reduced diameter barrel surface 30, the separation from the outer peripheral surface 23a of the inner cylinder 23 to the swirl flow path surface 27 and the reduced diameter barrel surface 30 is achieved. A drainage flow path 21 having an opening area that can secure a distance S longer than a predetermined length capable of flowing in a swirl flow, shorten the height H in the axial direction of the reduced-diameter barrel surface 30, and can smoothly drain water. Is secured.

  As shown in FIGS. 1 to 4, the ventilation mechanism 23 includes a valve body 55, a seal member 56, and a spring 57, which are attached to the inner side of the inner cylinder 23. The valve body 55 has a substantially bulky lid portion 55a and a shaft portion 55b, and the shaft portion 55b is suspended from the center position of the lid portion 55a. A cylindrical guide tube 55c is formed on the outer peripheral side of the shaft portion 55b. The inner diameter of the guide cylinder 55c is formed to be slightly larger than the outer diameter of the valve body holder 61 described later. A mounting groove 58 is formed on the outer peripheral side of the lid portion 55a, and a seal member 56 formed in an annular shape by a flexible member such as rubber is fitted into the mounting groove 58.

  A plurality of plate-like disc guides 60 are radially formed on the inner side of the inner cylinder 23 provided with the ventilation mechanism 22, and the valve body 55 is housed and held inside the disc guide 60. A cylindrical valve body holder 61 is integrally formed at a central position of the inner cylinder 23 at a position below the sealing member 28, and a hole 62 is formed at the center of the valve body holder 61. The shaft portion 55 b of the valve body 55 is inserted into the hole portion 62.

  When the valve body 45 is attached to the inner cylinder 23, the shaft portion 55b is inserted into the hole 62 of the valve body holding body 61, and the disc guide 60 is inserted while the valve body holding body 61 is inserted into the guide cylinder 55c. Store inside. A spring 57 is attached between the shaft portion 55b and the valve body holding body 61 in a state where the spring 57 is elastically biased. Accordingly, in a normal state, the seal member 56 of the valve body 55 is seated on the valve seat portion 41 by the urging force of the spring 57 as shown in FIG.

  The ventilation mechanism 22 normally maintains a closed state without protruding from the upper end of the joint body 20, and when the inside of the joint body 20 becomes negative pressure, the valve body 55 is a valve body holder as shown in FIG. It consists of a vent valve that is driven to open to the inner side of the joint body 20 while compressing the spring 57 while being aligned along 61. The negative pressure in the drainage facility is reduced by the operation of the valve body.

  As shown in FIG. 1, the lid 29 is formed in a substantially disk shape, and a female screw 70 is formed on the inner peripheral side thereof. The lid 29 is attached and detached from above the sealing member 28 attached to the upper part of the joint body 20 by screwing a female screw 70 to a male screw 71 formed on the joint body 20. After the lid 29 is attached, the sealing member 28 is fixed in a sandwiched state between the lid 29 and the joint body 20.

  In FIG. 3, a plurality of opening windows 72 are formed at equal intervals on the side of the lid 29, and guide fins 73 are formed in the centripetal direction between the opening windows 72. A lateral ventilation path 74 is formed. A cover part 75 is formed on the upper part of the lid 29, and the cover part 75 covers the opening 40 of the sealing member 28 from above. Sound insulation is possible by the cover part 75, and the sound during drainage is prevented from being transmitted to the flooring or the like. Further, the cover 75 prevents dust such as dust from entering.

  The lid 29 can be omitted. In this case, the sealing member 28 is naturally removed by forming a female screw portion (not shown) that can be screwed to the male screw 71 of the joint body 20 with respect to the sealing member 28. Can be prevented.

  The vent mechanism provided in the vent-integrated joint of the present invention may have a structure other than the vent valve in which the valve body is driven to open toward the inner side of the joint body. Although not shown, for example, a valve body that can be moved up and down with respect to the valve seat is provided.In normal times, this valve body is seated by its own weight, and when negative pressure is generated, it is lifted to the outside of the joint body by atmospheric pressure and negative pressure is generated. You may make it provide the ventilation mechanism of the structure which reduces this. Further, it is possible to adopt a structure in which the valve body is omitted and the inner cylinder is always in communication with the atmosphere side.

  Then, the case where the ventilation integrated joint shown to the said embodiment is attached to a flooring is demonstrated. 1 and 6 show a state in which a ventilation-integrated joint is attached. In the figure, the ventilation-integrated joint is attached to a position above the floor surface 13 of the flooring 12. A through hole 80 is provided in the flooring 12, and the standing pipe 10 is disposed through the through hole 80. A soundproofing material 81 is coated on the outer peripheral side of the vertical pipe 10 almost to the vicinity of the floor surface, and a through hole 80 between the vertical pipe 10 and the floor material 12 is filled with a sealing material 82 from the floor surface side. The space between the standing pipe 10, the flooring 12, and the soundproofing material 81 is sealed by 82.

  The ventilation-integrated joint is attached to the pipe end 10 a of the standing pipe 10 provided on the upper side of the floor surface 13. In this case, the ventilation-integrated joint is attached to the vertical pipe 10 fixed to the through hole 80 of the flooring 12 and joined so that the vertical pipe connecting portion 25 of the joint body 20 is inserted into the inner peripheral surface 10 b of the vertical pipe 10. Is done.

  When installing a ventilation integrated joint, first, the standing pipe 10 is attached to the flooring 12, and the ventilation integrated coupling is joined to the flooring 12. When installing the vertical pipe 10, the vertical pipe 10 is passed through the through-hole 80 while maintaining the adjustment height of the installation height, and the soundproof material 81 is covered on the outer periphery of the vertical pipe 10. At that time, the soundproof material 81 is attached to a position immediately before the sealing material 82 is provided. Thereafter, the sealing material 82 is filled in the through hole 80 on the outer peripheral side of the standing pipe and the sealing process is performed. Thereby, the standing pipe 10 can be fixed to the through hole 80 of the flooring 12, and the pipe end portion 10 a of the standing pipe 10 is placed at a position higher than the floor surface 13.

  The vertical pipe 10 fixed to the flooring 12 is inserted into the vertical pipe 10 and temporarily joined to the vertical pipe 10 while the pipe end 10a of the vertical pipe 10 is cut. Adjust the ventilation-integrated joint to a predetermined installation height. At this time, the pipe end portion 10a may be provided above the floor surface 13, and the ventilation-integrated joint may be attached to the pipe end portion 10a while adjusting the installation height. Next, the joint body 20 and the vertical pipe 10 are joined by applying an adhesive 83 to the inner peripheral surface 10 b of the vertical pipe 10 and the outer peripheral side of the vertical pipe connecting portion 25. By this joining, the ventilation-integrated joint can be fixed to the vertical pipe 10 at a predetermined height from the floor surface 13. At this time, since the annular flange 32 comes into contact with the pipe end 10a of the upright pipe 10, it can be attached in a state where the joint body 20 is positioned in the height direction.

Next, the operation of the ventilation integrated joint and the joint mounting structure of the present invention in the above embodiment will be described.
The vent integrated joint of the present invention is provided with a vertical pipe connecting portion 25 and a horizontal pipe connecting portion 26 in a joint body 20 having a venting mechanism 22, and from an outer peripheral surface 23 a of an inner cylinder 23 formed in communication with the venting mechanism 22. and the distance S to the swirling flow path 27 and reduced径胴portion surface 30, the drainage distance H ₁ from the lateral pipe inner diameter lowermost end 11a to the reduced径胴section plane end 30a is while securing the length flowing swirling flow Since the height H of the diameter-reduced body surface 30 in the direction of the axis P is shortened, the length of the entire joint can be shortened. Therefore, it can join, keeping the installation height of a coupling low, and installation in narrow installation spaces, such as under the floor, becomes easy.

  A pipe end portion 10a of a drainage standing pipe is provided in the vicinity of the floor surface 13 of the flooring 12 or above the floor surface 13, and the standing pipe connecting portion 25 of the joint body 20 is connected and attached to the drainage standing pipe 10. Therefore, the installation work of the standing pipe 10 and the installation work of the ventilation-integrated joint can be carried out by one person without requiring a jig or the like.

  At that time, it is only necessary to attach the vertical pipe 10 while penetrating the through hole 80, so that the installation work is facilitated, and the pipe end 10a of the vertical pipe above the floor surface 13 is cut to easily install the joint. The height can also be adjusted. The upright pipe 10 penetrated through the through hole 80 can be covered with the soundproofing material 81 up to the vicinity of the floor surface 13, so that the soundproofing property is high, and since the sealing process can be performed before the joint is attached, the workability is also good.

  When attaching a ventilated integrated joint to the vertical pipe, temporarily fix the joint body while adjusting the installation height with respect to the pipe end of the vertical pipe exposed from the floor, and apply an adhesive in this state. It can be easily installed in a predetermined installation space such as under the floor while ensuring a joined state.

  When drainage flows down in the drainage facility after the ventilation-integrated joint is attached and negative pressure is generated, the valve body 55 that has been kept closed until then moves downward against the elastic biasing force of the spring 57. The opening 40 is opened, and the air flows into the drainage facility from the opening 40. In this way, when negative pressure is generated, the valve body 55 is driven to release according to the pressure difference between the negative pressure and the atmospheric pressure, the valve is opened, and the atmosphere is taken into the drainage facility. The pressure difference is reduced and negative pressure is reduced. At this time, the trap seal water (not shown) of the drainage device 14 that is not draining is also prevented from being reduced by negative pressure.

  Next, when the valve opening operation reduces the pressure difference in the drainage facility and the valve closing operation is performed, the valve body 55 slides in the closing direction by the spring force of the spring 57, and the seal member 56 of the valve body 55 is moved. It sits on the valve seat 41 and closes the valve. When the valve is closed, the valve body 55 is aligned to enable a uniform valve seat seal. When the valve body 55 is seated, the inside of the joint body 20 is hermetically sealed and escape of odors in the drainage facility to the atmosphere side (under the floor or the like) is prevented.

  When drainage flows backward due to clogging or the like in the drainage facility and the water level of drainage from the drainage stack 10 rises, the drainage closes the inlet side of the cylinder 52 and the inside of the cylinder 52 or the joint body 20 The air layer is in a sealed state, and by maintaining the sealed state of the air layer, backflow is prevented, and leakage of drainage or outflow of drainage to the outside is prevented. In addition, since positive pressure acts on the valve body 55 at this time, the valve closed state is stably maintained, and the air layer is maintained in a sealed state to reliably prevent backflow.

  In a normal state, the valve body 55 maintains a closed state without protruding from the upper end of the ventilation mechanism 22, and the valve body 55 is driven to open to the inner side of the ventilation mechanism 22 when the inside becomes negative pressure. Therefore, the overall height can be reduced by minimizing the height of the ventilation mechanism 22. Thereby, without being restricted by the size of the narrow underfloor space, it is possible to arrange the ventilation-integrated joint while maintaining a predetermined water passage diameter, and it is possible to increase the living space by reducing the installation space.

  Further, when the lid body 37 is arranged above the sealing member 25 as in the above embodiment, the lateral ventilation path 37d is secured between the valve body 10 and the lid body 37, so that the valve body 10 is placed on the floor. Even if it is arranged close to the lower surface of the plate, sufficient ventilation necessary for eliminating the negative pressure can be performed.

  In the ventilation mechanism 22, the axial core Q of the horizontal pipe 11 is eccentric with respect to the axial core P of the vertical pipe 10, so that the drainage flows along the inner wall of the outer cylinder when drainage flows from the horizontal pipe. In this way, it flows down from the swirl flow path surface to the reduced diameter body surface by swirl flow. Thus, the air core is naturally formed in the vicinity of the shaft core P in the joint main body 20 by flowing the waste water so as to flow down the waste water flow by the swirling flow. For this reason, it is possible to smoothly guide the waste water from the horizontal pipe 11 into the joint body 20 and flow this waste water to the secondary side while ensuring the supply of air into the vertical pipe 10.

  Further, in this ventilated integrated joint, the height H of the reduced diameter body surface 30 in the direction of the axis P is shortened, and the diameter E of the cylindrical body 52 and the shape of the reduced diameter body surface 30 are adjusted. The separation distance S is ensured, and a flow path that allows the drainage to flow smoothly is provided. In the case of this structure, the pitch of the swirling flow at the time of drainage is shortened and the amount of ventilation is reduced, but the drainage capacity can be improved by about twice as compared with the joint device of the structure of FIG.

In Figure 1, while suppressing decrease the height distance C, when securing a large percentage of the diameter D of the horizontal pipe of the distance H _1, since it is possible to secure the size of the vent opening part while avoiding a collision of the swirling flow, the Similarly, the drainage capacity more than twice that of the joint device having the structure shown in FIG. 7 having the same installation height can be obtained.

  In addition, in any case, since the diameter-expanded portion 31 that gently spreads toward the end face side is provided on the inner periphery of the vertical pipe connection portion 25 by the larger radius, the internal diameter of the vertical pipe 10 is increased by the diameter-expanded portion 31. Therefore, it is possible to prevent the swirling flow from being disturbed by a step with the inner diameter of the vertical pipe connecting portion 25 and to smoothly and reliably guide the swirling flow into the vertical pipe 10.

DESCRIPTION OF SYMBOLS 10 Drainage pipe 10a Pipe end part 10b Inner peripheral surface 11 Horizontal piping 12 Floor material 13 Floor surface 20 Joint main body 22 Ventilation mechanism 23 Inner cylinder 23a Outer peripheral surface 24 Outer cylinder 25 Vertical pipe connection part 26 Horizontal pipe connection part 27 Swirling flow path surface 30 Diameter-reduced body surface 31 Expanded-diameter portion 32 Annular flange 33 Expanded portion 52 Cylindrical body 55 Valve body D Horizontal pipe diameter P Shaft core S Separation distance

Claims (8)

  A joint body having a ventilation mechanism is provided with a vertical pipe connection part for drainage vertical pipe connection and a horizontal pipe connection part for horizontal pipe connection, and the horizontal pipe connection part is eccentric with respect to the axis of the vertical pipe connection part. And a bulging portion is formed on one side of the horizontal pipe connecting portion, and a substantially arc-shaped swirling flow passage surface is formed on the inner peripheral side of the swollen portion, and the swirling flow passage surface is followed by a gentle And a separation distance from the outer peripheral surface of the inner cylinder formed in communication with the ventilation mechanism to the swirl flow path surface and the reduced-diameter body surface is at least equal to the diameter of the horizontal pipe. A length of 50% or more is ensured so that the drainage can flow in a swirling flow, and the height of the reduced diameter body portion surface in the axial direction is formed in a shortened shape. A ventilation integrated joint.   A joint body having a ventilation mechanism is provided with a vertical pipe connection part for drainage vertical pipe connection and a horizontal pipe connection part for horizontal pipe connection, and the horizontal pipe connection part is eccentric with respect to the axis of the vertical pipe connection part. And a bulging portion is formed on one side of the horizontal pipe connecting portion, and a substantially arc-shaped swirling flow passage surface is formed on the inner peripheral side of the swollen portion, and the swirling flow passage surface is followed by a gentle The diameter of the diameter-reduced body part that inclines is formed, and the distance from the lower end of the inner diameter of the horizontal pipe to the terminal end of the diameter-reduced body part is secured to a length that is 40% or more of the diameter of the horizontal pipe. A vent-integrated joint characterized in that it is held in a length that allows it to flow in a flow, and the height of the reduced diameter body surface in the axial direction is formed in a shortened shape.   The ventilation according to claim 1 or 2, wherein the joint body has a double tube structure having an inner cylinder and an outer cylinder communicating with the ventilation mechanism, and the outer diameter of the inner cylinder is reduced to increase the separation distance. Integrated fitting.   The said standing pipe connection part was provided in the outer diameter which can be inserted inside the said drainage standing pipe, and the annular collar part contact | abutted to the pipe end part of the said drainage standing pipe was formed in the upper part of this standing pipe connection part. 4. The ventilation integrated joint according to any one of 3 above.   The ventilation integrated joint according to any one of claims 1 to 4, wherein a diameter-expanding portion that gradually widens toward an end surface is provided on an inner periphery of the vertical pipe connecting portion.   The ventilation mechanism normally maintains a closed state without protruding from the upper end of the joint body, and when the joint body becomes negative pressure, the valve body of the ventilation mechanism moves inward of the joint body. The ventilation-integrated joint according to any one of claims 1 to 5, wherein the ventilation valve is an opening-driven ventilation valve.   The pipe end portion of the drainage standing pipe is provided near the floor surface of the flooring material or above the floor surface, and the drainage standing pipe is a standing pipe of the ventilated integrated joint according to any one of claims 1 to 6. Fitting mounting structure with connecting parts connected.   The joint mounting structure according to claim 7, wherein the vertical pipe connecting portion is inserted and joined to an inner peripheral surface of the drainage vertical pipe.

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