JP2008180056A - Drainage facility and renewal method of drainage facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage facility and a renewal method of the drainage facility which can facilitate the removal of an old drain riser, can reduce a cost of a new drain riser, and makes possible the renewal work of the drain riser at low cost. <P>SOLUTION: The drain pipe joint 20 of the drainage facility has an upper body 21a, a lower body 21b, and longitudinal-direction coupling mechanisms 41, 42. The upper body 21a is provided with an upper socket 22. The lower body 21b which is constituted so that it can be attached by penetrating a concrete slab CS partitioning the floor above and the floor below an apartment is provided with a lower connection part 27. Then the longitudinal-direction coupling mechanisms 41, 42 which couple the upper body 21a and the lower body 21b with each other in a watertight state is constituted so that it can release the coupling. Piping connection mechanisms 27, 35 are provided to at a connection part between the lower connection part 27 of the upper body 21a of the drain pipe joint 20 and the upper end of the drain riser 30 of the floor below. The piping connection mechanisms 27, 35 connect the lower connection part 27 of the drain pipe joint 20 and the drain riser 30 of the floor below to each other in a watertight state, and the piping connection mechanisms 27, 35 can be separated from each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, the drainage horizontal branch pipe provided on the upper floor of the apartment house is connected to the horizontal branch pipe receptacle of the drainage pipe joint, and the drainage stack on the upper floor is connected to the upper receptacle of the drainage pipe joint. The lower connection part of a pipe joint is connected to the drainage standpipe of a lower floor, and relates to the drainage equipment of the composition which guides the drainage of an upper floor to the lower floor by gravity, and the updating method of the drainage equipment.

A technique relating to the above-described drainage facility is described in Patent Document 1.
As shown in FIGS. 16 and 18, the drainage facility 100 includes drainage pipe joints 110 that are installed on each floor through a concrete slab CS that partitions an upper floor and a lower floor of an apartment house. The drainage pipe joint 110 is a joint that joins the drainage guided by the drainage stack 102 on the upper floor and the drainage side branch pipe 103 (see FIG. 16) and flows into the drainage stack 102 on the lower floor. 111 is fixed by backfill mortar Mr or the like in a state where it is passed through the through hole CH of the concrete slab CS.
The drainage stack 102 is provided with an upper receiving port 102u, and the lower end straight pipe portion 115 of the drainage pipe joint 110 on the upper floor is inserted and connected to the upper receiving port 102u. Further, the lower end insertion port of the drainage stack 102 is inserted and connected to the upper receiving port 112 of the drainage pipe joint 110 on the lower floor.
Note that, when the drainage stack 102 is cut into a length suitable for transportation and joined on site, a socket 105 is preferably used as shown in FIG.

JP 2006-22581 A

The drainage facility 100 described above is piped by assembling the drainage pipe joint 110 and the drainage stack 102 in order from the lower floor. That is, after the drainage pipe joint 110 of the lower floor is installed, the lower end insertion port of the drainage stack 102 of the floor is inserted and connected to the upper receiving port 112 of the drainage pipe joint 110. Next, in a state where the drainage stack 102 is supported by the support material, the upper floor drainage pipe joint 110 is passed through the through hole CH of the upper floor concrete slab CS, and the lower end straight pipe portion 115 of the drainage pipe joint 110. Is inserted and connected to the upper receiving port 102u of the drainage stack 102. Furthermore, the lower end insertion port of the upper floor drainage stack 102 is inserted and connected to the upper receiving port 112 of the upper floor drainage pipe joint 110. In this way, the drainage facility 100 is constructed by connecting the drainage pipe joint 110 and the drainage stack 102 in order from the lower floor.
In the drainage system 100 described above, since the drainage pipe joints 110 on the upper floor and the lower floor are both fixed to the concrete slab CS, for example, the drainage pipe 102 on the way is clogged or damaged, and the drainage stand at that portion When the pipe 102 is removed, as shown in FIG. 17, the drainage stack 102 must be cut and pulled up and down. Further, when a new drainage stack 102 is attached, it is necessary to attach an exchange joint capable of adjusting the length to the new drainage stack 102 at the intermediate portion. That is, a part of the drainage stack 102 is accommodated in the exchange joint, and the drainage stack 102 is set between the upper and lower drainage pipe joints 110 in a short state, and then the drainage It is necessary to draw a part of the vertical pipe 102 from the exchange joint and connect it to the drainage pipe joints 110 on the upper floor and the lower floor.
However, the method of using the exchange joint has a problem that the piping cost increases.

  The present invention was made to solve the above problems, and the technical problem of the present invention is to facilitate the removal of the old drainage stack and reduce the cost of the new drainage stack, It is to be able to carry out the renewal work of drainage standpipe at low cost.

The above-described problems are solved by the inventions of the claims.
According to the first aspect of the present invention, the drainage horizontal branch pipe provided on the upper floor of the apartment building is connected to the horizontal branch pipe receptacle of the drainage pipe joint, and the drainage standpipe on the upper floor is connected to the upper receptacle of the drainage pipe joint. The drainage pipe joint is connected to the lower floor drainage pipe, and is a drainage system configured to guide the upper floor drainage to the lower floor by gravity, wherein the drainage pipe joint is connected to the upper receiving port. The upper body and the concrete slab that divides the upper floor and lower floor of the apartment building, and the lower body including the lower connecting portion, and the upper body and the lower body in a watertight state. The connecting portion between the lower connecting portion of the lower body of the drainage pipe joint and the upper end portion of the drainage stack on the lower floor, The lower connection part of the drainage pipe joint and the drainage stand on the lower floor are in a watertight state. As well as it continues, wherein the detachably configured pipe connection mechanism.

According to the present invention, the lower connection portion of the upper-floor drainage pipe joint and the upper end portion of the lower-floor drainage stack are configured to be separable by the pipe connection mechanism, and the lower-floor drainage pipe joint is configured as a longitudinal coupling mechanism. Thus, the upper body and the lower body can be disconnected. For this reason, the connection between the upper body and the lower body of the drainage pipe joint on the lower floor is released by the vertical connection mechanism, and the lower connection part of the drainage pipe joint on the upper floor and the drainage stack of the lower floor are further connected by the pipe connection mechanism. By separating the upper end portion, it is possible to integrally remove the drainage stack on the lower floor and the upper body of the drainage pipe joint on the lower floor from the drainage facility. Therefore, it is not necessary to cut the old drainage stack, and the old drainage stack can be easily removed.
Furthermore, after inserting and connecting a new drainage stack to the upper body of the drainage pipe joint on the lower floor, the drainage stack and the upper body are integrated into a drainage facility using a pipe connection mechanism and a vertical connection mechanism. It can be restored. This eliminates the need for an exchange joint or the like for adjusting the pipe length at the intermediate portion of the drainage standpipe as in the prior art, can reduce costs, and facilitates recovery of a new drainage standpipe or the like. .

According to a second aspect of the present invention, the longitudinal coupling mechanism includes a lower flange formed at a lower portion of the upper body and an upper flange formed at an upper portion of the lower body, and the lower flange of the upper body; The upper body of the lower body is connected to the upper flange in a watertight state and is configured to be disengaged.
According to a third aspect of the present invention, the longitudinal connecting mechanism is formed in a straight tubular lower straight pipe portion formed in a lower portion of the upper body and an upper portion of the lower body, and a lower straight pipe portion of the upper body is An enlarged diameter portion that can be fitted, an annular packing that is attached to a packing attachment portion formed inside the opening of the enlarged diameter portion, and an outer periphery of the lower straight pipe portion of the upper body that is loosely fitted to the lower body A press ring member fixed in a detachable manner, and a lower straight pipe portion of the upper body is fitted to a diameter-enlarged portion of the lower body via the annular packing, and the annular packing is supported by the press ring member. Pressed from above and compressed and deformed to come into close contact with the outer peripheral surface of the upper body and the inner surface of the packing mounting portion of the lower body, and the upper body and the lower body are connected in a watertight state, and the connection is released. It is configured to be possible.

According to the invention of claim 4, the pipe connection mechanism is formed at the straight tubular lower connection part of the drainage pipe joint and the upper end part of the drainage stack, and the upper part where the lower connection part of the drainage pipe joint is inserted and connected. The depth of penetration of the upper receptacle is displaced upward by a predetermined dimension from the state in which the upper receptacle and the lower connection portion of the drainage pipe joint are connected. It is set to the dimension which can be made to be made.
For this reason, the lower floor drainage pipe can be easily displaced upward after the connection between the upper body and the lower body of the drainage pipe joint on the lower floor is released by the vertical coupling mechanism. It becomes easy to remove the upper body of the pipe joint from above the lower body. After removing the upper body from above the lower body, with the drainage stack and its upper body inclined, pull the drainage stack etc. The upper receptacle of the drainage stack can be easily pulled out from the connection part.

According to the invention of claim 5, the drainage stack has a straight pipe portion and an upper receiving port formed at the upper end of the straight pipe portion, and is tapered between the straight pipe portion and the upper receiving port. The boundary expansion portion is inclined at 15 ° or more and 40 ° or less with respect to the axis of the drainage stack.
Thereby, while being able to make small the resistance of the waste_water | drain colliding with a boundary expansion part, the swirl flow formed with the drain pipe joint can be made to flow down without breaking.
According to the invention of claim 6, the upper receiving port of the drainage stack is tubular and has an upper receiving port into which the lower connection portion of the drainage pipe joint is inserted and connected at the upper side, and the straight tubular shape of the drainage stack at the lower side. An upper end portion of the drainage stack is fitted and joined to a lower receiving port of a socket having a lower receiving port in which an upper end portion can be fitted, and the socket includes an upper receiving port and a lower receiving port. In the middle, there is provided a protrusion formed with a tapered boundary expanding portion that expands toward the upper receptacle, and the inclination of the boundary expanding portion with respect to the axis of the drainage stack is not less than 15 ° and not more than 40 ° It is characterized by being.
Thereby, even when the upper receptacle of the drainage stack is provided by the socket, it is possible to reduce the resistance of the drainage that collides with the boundary expansion portion, and the swirl flow formed by the drainage pipe joint. Can flow down without breaking.

  According to a seventh aspect of the present invention, the size into which the upper receptacle can be inserted is 85 mm or more.

According to the invention of claim 8, a band-shaped restricting member capable of restricting the amount of insertion into the upper receiving port of the drainage stack is mounted in a removable state on the straight tubular lower connection portion of the drainage pipe joint. Features.
For this reason, when the lower connection part of the drainage pipe joint is inserted and connected to the upper receptacle of the drainage stack on the lower floor at the time of new installation, the insertion amount can be kept constant by the band-shaped regulating member. Here, since the regulating member is removable, if the regulating member is removed, the upward displacement of the old drainage stack is not hindered when the old drainage stack is removed.

According to the invention of claim 9, the pipe connection mechanism is a cylinder configured such that the straight tubular lower connection portion of the drainage pipe joint is inserted from above, and the straight tubular upper end of the drainage stack is inserted from below. -Shaped sealing material, a ring-shaped spacer clamped coaxially between the lower connecting portion of the drainage pipe joint and the drainage stack, and a cylinder capable of tightening or releasing the sealing material from the outside in the radial direction It is characterized by being comprised from the shaped fastener.
For this reason, by removing the ring-shaped spacer, it is possible to remove the drainage standpipe without cutting it even in a drainage facility using a straight tubular drainage stand having no upper receptacle.

According to invention of Claim 10, the said ring-shaped spacer is pinched | interposed between the lower connection part of a drainage pipe joint, and a drainage stack through the ring-shaped intervention body which consists of a water-soluble material or a sublimation material. It is characterized by being.
For this reason, when the ring-shaped interposer disappears with time, the ring-shaped spacer is disposed in the cylindrical sealing material with a gap above and below by the thickness of the ring-shaped interposer. It becomes. Thereby, the ring-shaped spacer can be easily removed.

According to the invention of claim 11, the ring-shaped spacer is characterized in that at least the contact surface with the lower connecting portion of the drainage pipe joint and the contact surface with the drainage stack are made of a releasable material. To do.
For this reason, it becomes possible to remove a ring-shaped spacer easily.

According to the invention of claim 12, the upper body of the drainage pipe joint is characterized in that almost the entire inner space is occupied by the upper receiving port.
Therefore, the upper body of the drainage pipe joint can be formed with a minimum length.

According to a thirteenth aspect of the present invention, a hanging tool is suspended from a concrete slab that partitions the upper floor and the lower floor, and the drainage stack is suspended from the hanging tool.
As a result, the drainage pipe joint is drained in various backfill configurations, such as when the through hole is filled with rock wool and the top of the through hole is backfilled with a mortar of about 3 cm, for example. The support strength of the vertical pipe can be maintained.

The invention of claim 14 is the drainage facility renewal method according to claim 8, wherein the connection between the upper body and the lower body is released by the longitudinal connection mechanism of the drainage pipe joint on the lower floor. Before or after the decoupling step, removing the band-shaped regulating member attached to the lower connection part of the upper-level drainage pipe joint, and lower drainage of the upper-level drainage pipe joint to the lower-level drainage While being inserted into and connected to the upper receiving port of the vertical pipe, the upper body is shifted laterally from the lower body while displacing the drainage vertical pipe of the lower floor and the upper body of the drainage pipe joint of the lower floor upward. Thereafter, the drainage standpipe is displaced downward integrally with the upper body to separate the upper receptacle of the drainage standpipe from the lower connection part of the drainage pipe joint on the upper floor. Drainage standpipe that pulls out the lower end of the drainage standpipe from the upper receiving port Insert the lower end of a new drainage stack cut to a predetermined length and the upper receiving port of the upper body after separation, and connect the upper receiving port of the new drainage stack to the upper level drainage pipe joint And a recovery step of connecting the separated upper body to the lower body of the drainage pipe joint on the lower floor by the vertical direction connecting mechanism in this state.
The invention of claim 15 is a method for renewing a drainage facility according to claim 8, wherein the connection between the upper body and the lower body is released by the longitudinal connection mechanism of the drainage pipe joint on the lower floor. Before or after the decoupling step, removing the band-shaped regulating member attached to the lower connection part of the upper-level drainage pipe joint, and lower drainage of the upper-level drainage pipe joint to the lower-level drainage While being inserted into and connected to the upper receiving port of the vertical pipe, the upper body is shifted laterally from the lower body while displacing the drainage vertical pipe of the lower floor and the upper body of the drainage pipe joint of the lower floor upward. Then, the drainage stack is displaced downward integrally with the upper body to separate the upper receiving port of the drainage stack from the lower connection portion of the drainage pipe joint on the upper floor, and further through the concrete slab. Remove the lower body of the drainage pipe joint on the lower floor from the hole Then, pass the lower body of the drainage pipe joint on the new lower floor through the through hole of the concrete slab, and insert the lower connecting part of the lower body into the upper receiving port of the drainage stack located under the concrete slab. Inserting the lower end of a new drainage stack cut to a predetermined length into the upper receptacle of the new upper body, and connecting the upper receptacle of the new drainage stack to the drainage pipe joint on the upper floor It connects with a lower connection part, and it has the recovery process which connects the said upper body to the lower body of the drainage pipe joint of a lower floor by the said vertical direction connection mechanism in this state.

A sixteenth aspect of the invention is the drainage facility renewal method according to any one of the ninth to eleventh aspects, wherein the upper body and the lower body are connected by the longitudinal connection mechanism of the drainage pipe joint on the lower floor. Before or after the connection release step, and release the tightening of the fastener of the pipe connection mechanism to connect the tubular seal member of the pipe connection mechanism to the lower part of the drainage pipe joint on the upper floor. A step of exposing the upper end of the ring-shaped spacer and the lower-floor drainage stack, removing the ring-shaped spacer, and removing the lower-floor drainage by the thickness of the spacer. Displace the pipe and the upper body of the drainage pipe joint on the lower floor upward, displace the drainage stack and the upper body laterally to remove them from the drainage facility, and then connect the drainage stack to the upper receptacle of the upper body Drainage stack removal process, After inserting the lower end of a new drainage stack cut to length into the upper receptacle of the upper body after separation, the upper body after separation and the new drainage stack are placed under the drainage pipe joint on the lower floor. Temporarily placing on the fuselage, and interposing the ring-shaped spacer between the new drainage stack and the lower connection part of the drainage pipe joint on the upper floor; and the cylindrical sealing material of the pipe connection mechanism Cover the ring-shaped spacer and the upper end of the drainage stack on the lower floor by displacing it downward along the lower connection part of the drainage pipe joint on the upper floor, and tighten the sealing material with a fastener, and then or before that And a recovery step of connecting the separated upper body to the lower body of the drainage pipe joint on the lower floor by the longitudinal connection mechanism.
The invention of claim 17 is the drainage facility renewal method according to any one of claims 9 to 11, wherein the upper body and the lower body are connected by a longitudinal connection mechanism of a drainage pipe joint on the lower floor. Before or after the connection release step, and release the tightening of the fastener of the pipe connection mechanism to connect the tubular seal member of the pipe connection mechanism to the lower part of the drainage pipe joint on the upper floor. A step of exposing the upper end of the ring-shaped spacer and the lower-floor drainage stack, removing the ring-shaped spacer, and removing the lower-floor drainage by the thickness of the spacer. Displace the pipe and the upper body of the drainage pipe joint on the lower floor upward, displace the drainage stack and the upper body laterally to remove them from the drainage facility, and further from the through hole of the concrete slab to the drainage pipe joint on the lower floor Removal process to remove the lower body of The lower body of the drainage pipe joint on the lower floor is passed through the through hole of the concrete slab, and the lower connection part of the lower body is connected to the upper end part of the drainage stack arranged on the lower side of the concrete slab by a pipe connection mechanism. And connecting the lower end of a new drainage stack cut to a predetermined length into the upper receptacle of the new upper body, and then connecting the upper body and the new drainage stack to the drainage pipe joint on the lower floor. Temporarily placing on the lower body and interposing the ring-shaped spacer between the new drainage stack and the lower connection part of the upper-floor drainage pipe joint, and the cylindrical sealing material of the pipe connection mechanism Is moved downward along the lower connection portion of the upper-level drainage pipe joint to cover the ring-shaped spacer and the upper end portion of the lower-level drainage stack, and the sealing material is tightened with a fastener, and then or Before, the upper fuselage of the drainage pipe joint on the lower floor And having a recovery step of connecting by the longitudinal coupling mechanism to the fuselage.

  ADVANTAGE OF THE INVENTION According to this invention, the drainage standpipe piped between the drainage pipe joint fixed to the concrete slab of the upper floor and the drainage pipe joint fixed to the concrete slab of the lower floor can be updated at low cost.

[Embodiment 1]
Hereinafter, based on FIGS. 1-15, the drainage equipment which concerns on Embodiment 1 of this invention, and the update method of the drainage equipment are demonstrated. The drainage facility according to this embodiment is a drainage facility in an apartment house such as a condominium, and FIG. 1 shows a side view of the drainage facility. Fig. 2 is a plan view (Fig. A) of a regulating member used in the drainage facility, and a longitudinal sectional view (Fig. B) of the upper receiving port of the drainage stack. Figs. 3 to 6 are side views showing a method for updating the drainage facility. FIG. 7 is a side view showing a modification example of the drainage facility update method, FIG. 8 is a plan view of a pipe connection mechanism used in the drainage facility, and FIG. 9 is a side view showing a modification example of the drainage facility update method. It is. Moreover, FIG. 11 is sectional drawing showing the example of a change of the upper receptacle of a drainage stack.

<About the drain pipe joint 20 of the drainage facility 10>
As shown in FIG. 1, the drainage facility 10 according to the present embodiment includes a drainage pipe joint 20 that is installed on each floor through a concrete slab CS that partitions an upper floor and a lower floor of an apartment house. The drainage pipe joint 20 is a joint that joins the drainage led by the drainage stack 30 on the upper floor and the drainage side branch pipe 40 and flows into the drainage stack 30 on the lower floor. 21 is fixed by backfill mortar Mr in a state where it is passed through the through hole CH of the concrete slab CS.
The body portion 21 of the drainage pipe joint 20 is of a vertically divided type, and includes an upper body 21a and a lower body 21b. And the lower flange 41 formed in the lower part of the upper body 21a and the upper flange 42 formed in the upper part of the lower body 21b are coaxially connected through a packing 40p (see FIG. 4) in a watertight state. That is, the lower flange 41 of the upper body 21a, the upper flange 42 of the lower body 21b, the packing 40p, bolts, nuts (not shown), and the like correspond to the vertical direction connecting mechanism of the present invention.
An upper receiving port 22 into which a lower end insertion port 31 s (lower end portion) of the inner pipe 31 of the drainage stack 30 is inserted and connected is formed at the upper end portion of the upper body 21 a of the body portion 21. A substantially cylindrical sealing material (not shown) that seals between the lower end of the drainage stack 30 and the upper receiving port 22 in a watertight state is fitted inside the upper receiving port 22. The upper body 21a is formed with a cylindrical portion 21e having an enlarged diameter between the upper receiving port 22 and the lower flange 41 (see FIG. 1).

On the upper side surface of the lower body 21 b of the body portion 21, a plurality of side branch pipe receptacles 25 to which drainage side branch pipes 40 from sanitary appliances (kitchen sinks, toilets, etc.) on each floor are connected to the lower side of the upper flange 42. Is formed. A rubber seal material (not shown) is also attached to the horizontal branch pipe receptacle 25.
In addition, a lower end straight pipe portion 27 that is inserted and connected to the upper receiving port 35 of the drainage stack 30 is formed at the lower end portion of the lower body 21b of the body portion 21, that is, the portion that protrudes downward from the through hole CH of the concrete slab CS. Has been. Furthermore, the lower end straight pipe portion 27 of the lower body 21b is equipped with a regulating member 70 for keeping the insertion allowance of the lower end straight pipe portion 27 with respect to the upper receiving port 35 of the drainage stack 30 constant.
As shown in FIG. 2 (A), the restricting member 70 is provided at a metal annular portion 72 opened at one place in the circumferential direction, and at one end and the other end of the open portion of the annular portion 72. The pair of support pieces 74 and bolts and nuts 75 that connect the support pieces 74 are configured. The annular part 72 is a part into which the lower end straight pipe part 27 of the lower body 21 b is inserted, and is formed to have a diameter sufficiently larger than the inner diameter dimension of the upper receiving port 35 of the drainage stack 30. Further, the annular portion 72 is provided with a hinge portion 72h at a position opposite to the support piece 74 with respect to the center.
The pair of support pieces 74 are formed with through holes (not shown) through which the bolts are passed, and the bolts are passed through the through holes and the nuts are tightened so that the interval between the pair of support pieces 74 is narrowed. Thus, the diameter of the annular portion 72 is reduced. As a result, the lower end straight pipe portion 27 of the lower body 21b is fastened to the annular portion 72 of the restriction member 70, and the restriction member 70 is fixed in a state in which it cannot move in the axial direction with respect to the lower end straight pipe portion 27 of the lower body 21b. Is done.
That is, the lower end straight pipe portion 27 of the lower body 21b corresponds to the lower connection portion of the drainage pipe joint 20 of the present invention.

<About the drainage stack 30 of the drainage facility 10>
As shown in FIG. 1, the drainage stack 30 is composed of a first stack 30a and a second stack 30b.
The first standing pipe 30a is a fire-resistant double-layer pipe provided with an upper receptacle 35 with a sealing material at the upper end of the straight pipe and a socket part 50 at the lower end, and includes an inner pipe 31 made of, for example, hard vinyl chloride. As shown in FIG. 2B and the like, the inner pipe 31 is composed of a straight pipe portion 32 and an upper receiving port 35 formed at the upper end of the straight pipe portion 32. The upper receiving port 35 and the straight pipe A tapered boundary expanding portion 33 is formed between the portions 32. It is preferable that the tapered boundary expanding portion 33 has an inclination θ with respect to the axis of the drainage stack 30 (first stack 30a) of 15 ° or more and 40 ° or less. If the inclination of the boundary expanding portion 33 with respect to the axis is set in such a range, the resistance of the drainage that collides with the boundary expanding portion 33 can be reduced, and the swirl flow formed by the drain pipe joint 20 is broken. It can be made to flow down without.
The upper receiving port 35 is a portion into which the lower end straight pipe portion 27 of the drainage pipe joint 20 is inserted and connected, and a sealing material 37 is attached to a tip portion (upper end portion) of the upper receiving port 35 by a sealing material holding ring 38. . The sealing material holding ring 38 is configured to be fixed to the upper end of the upper receiving port 35 by bonding or the like, and a groove 38m having a square cross section for accommodating and holding the sealing material 37 is continuously provided in the circumferential direction on the inner peripheral surface thereof. Is formed.

In the first riser 30a according to the present embodiment, the distance M from the upper end surface of the upper receiving port 35, that is, the upper end surface of the sealing material holding ring 38, to the upper end of the groove 38m is set to M = 5 mm, and the groove 38m The width W is set to W = 10 mm. For this reason, the lower end straight pipe portion 27 of the drain pipe joint 20 is inserted into the upper receiving port 35 with M + W = 15 mm or more (25 mm or more with allowance), so that the upper receiving port 35 and the lower end straight pipe portion of the drain pipe joint 20 are inserted. 27 is sealed (insertion connection). That is, the lower end straight pipe portion 27 of the drainage pipe joint 20 is inserted into the upper receiving port 35 of the first standing pipe 30 a by 25 mm or more, so that the lower end straight pipe portion 27 of the drainage pipe joint 20 seals against the upper receiving port 35. Connected in the connected state (inserted connection). Here, the minimum dimension 25 mm required to connect the upper receiving port 35 of the first riser 30a and the lower end straight pipe portion 27 of the drainage pipe joint 20 is referred to as a necessary penetration depth dimension N. In addition, the dimension Nmax in which the upper receiving port 35 of the first riser 30a can fit the lower end straight pipe portion 27 of the drainage pipe joint 20 is the upper receiving port 35 of the first riser 30a and the lower end straight pipe part of the drainage pipe joint 20. 27, the upper body 21a and the lower body 21b of the drainage pipe joint 20 on the lower floor B are separated from each other, and the drainage stack 30 and the upper body 21a are integrally removed from the lower end straight pipe portion 27. It is set to a dimension that can be displaced upward by a predetermined dimension, and is preferably set to 85 mm or more. In this embodiment, Nmax = about 125 mm is set.
In the present embodiment, in consideration of the thickness T of the ring-shaped one-touch joint material 35m attached to the upper surface of the upper receptacle 35, the lower straight pipe portion 27 of the drainage pipe joint 20 is connected to the upper receptacle 35 of the first riser 30a. On the other hand, the restricting member 70 described above is attached at a position where only the reference dimension NX (reference dimension NX> required insertion depth dimension N) can be inserted.
That is, the lower end straight pipe portion 27 of the drain pipe joint 20 and the upper receiving port 35 of the first vertical pipe 30a correspond to the pipe connection mechanism of the present invention.

The inner pipe 31 of the first riser 30a is covered with an outer pipe 39 made of fiber reinforced mortar (a mortar mixed with non-combustible materials and fibers) from the upper receiving port 35 to the straight pipe portion 32. The lower end (lower end insertion opening) of the straight pipe portion 32 is exposed by about 50 mm. And the lower end insertion port of the exposed straight pipe part 32 is connected to the socket part 50, after passing through the ring-shaped one-touch joint material 50m, as shown in FIG.
The second standpipe 30b is a fireproof double-layer pipe having a diameter equal to that of the first standpipe 30a described above. As shown in FIG. 1, the straight pipe inner pipe 31 and both ends (inserts) of the inner pipe 31 are provided. ) And an outer tube 39 made of fiber reinforced mortar covering the other portion. And the drainage standpipe 30 is completed by connecting the upper end insertion port of the 2nd standpipe 30b to the socket part 50 of the 1st standpipe 30a. That is, the portion of the lower end insertion opening of the inner pipe 31 of the second riser 30b functions as the lower end insertion opening 31s of the drainage stack 30.
Note that the required number of the first riser 30a and the second riser 30b are mass-produced at the factory based on the set length dimension, and are connected at the construction site to assemble the drainage standpipe 30.
Since the outer tube of the second riser 30b of the fireproof two-layer tube is loose, it slips if inserted with the outer tube during assembly, and therefore is inserted with the socket part 50 of the first riser 30a.

<Construction and renewal method for drainage 10>
The construction and renewal method of the drainage 10 described above will be described.
When the drainage facility 10 is newly installed, the drainage pipe joint 20 and the drainage stack 30 are piped by being assembled in order from the lower floor. That is, after the drainage pipe joint 20 on the lower floor is installed, the lower end insertion port 31s of the drainage stack 30 on the floor has the ring-shaped one-touch joint material 35m interposed in the upper receptacle 22 of the drainage pipe joint 20 Is inserted and connected. Next, in a state where the drainage stack 30 is supported by a support material (not shown), the drainage pipe joint 20 on the upper floor A is passed through the through hole CH of the concrete slab CS on the upper floor, and the drainage pipe joint 20 The lower end straight pipe portion 27 is inserted and connected to the upper receiving port 35 of the drainage stack 30. At this time, since the regulating member 70 is fixed to the lower end straight pipe portion 27 of the drainage pipe joint 20, the amount of insertion of the lower end straight pipe portion 27 of the drainage pipe joint 20 into the upper receiving port 35 of the drainage stack 30 is constant. Retained.
Furthermore, the lower end insertion port 31s of the drainage stack 30 on the upper floor is inserted and connected to the upper receptacle 22 of the drainage pipe joint 20 on the upper floor A with a ring-shaped one-touch joint material 35m interposed. In this manner, the drainage facility 10 is constructed by connecting the drainage pipe joint 20 and the drainage stack 30 in order from the lower floor.
In addition, after construction of the drainage facility 10, the through hole CH of the concrete slab CS on each floor is backfilled with mortar Mr, and the drainage pipe joint 20 on each floor is fixed to the concrete slab CS.

Next, a procedure for updating the drainage stack 30 on the lower floor B shown in FIG. 1 will be described.
First, as shown in FIG. 3, the connection between the lower flange 41 of the upper body 21a and the upper flange 42 of the lower body 21b in the drainage pipe joint 20 on the lower floor B is released. In addition, the code | symbol B in FIG. 3 is a bolt for the connection of the lower flange 41 and the upper flange 42, and the code | symbol N is the nut for the said bolt.
Next, the bolt & nut 75 of the regulating member 70 in the lower end straight pipe portion 27 of the drainage pipe joint 20 on the upper floor A is removed from the support piece 74, and the annular portion 72 is widened, and the regulating member 70 becomes the drainage pipe. It is removed from the lower end straight pipe portion 27 of the joint 20. As a result, in the state where the lower end straight pipe portion 27 of the drainage pipe joint 20 on the upper floor A and the upper receptacle 35 of the drainage stack 30 on the lower floor B are connected, the drainage stack 30 on the lower floor B is moved upward. Can be displaced.
In this state, the upper body 21a and the lower body 21b of the drainage pipe joint 20 on the lower floor B are separated, and the upper body 21a and the drainage stack 30 on the lower floor B are displaced upward by about a dimension U. Here, the dimension U is larger than the fitting allowance between the lower flange 41 of the upper body 21a and the upper flange 42 of the lower body 21b.
As a result, the upper body 21a of the drainage pipe joint 20 on the lower floor B can be shifted laterally from above the lower body 21b. Next, as shown in FIG. 4, by downwardly displacing (pulling) the drainage stack 30 of the lower floor B and the upper body 21 a of the drainage pipe joint 20 of the lower floor B integrally tilted. The upper receiving port 35 of the drainage stack 30 of the lower floor B can be removed from the lower end straight pipe portion 27 of the drainage pipe joint 20 of the upper floor A. Next, the drainage stack 30 of the removed lower floor B is pulled out from the upper receptacle 22 of the upper body 21a, whereby the old drainage stack 30 is removed.

Next, after the interior is cleaned in a state where the upper body 21a and the lower body 21b of the drainage pipe joint 20 on the lower floor B are separated, necessary repairs are performed. That is, slime and the like adhering to the inner surfaces of the upper body 21a and the lower body 21b are scraped and removed by a wire brush or other tools, and then painted or resin-coated. Furthermore, the sealing material (not shown) and the packing 40p of the upper receiving port 22 of the upper body 21a are replaced with new ones. Thereby, the drain pipe joint 20 becomes a state close to a new article, and a predetermined drainage performance can be secured.
In this way, when the repair of the drainage pipe joint 20 is completed, a new drainage stack 30 is attached in a procedure reverse to the above. That is, a new drainage stack 30 and the upper body 21a are integrally displaced upward from an oblique state in the direction opposite to the arrow shown in FIG. 4, and the drainage pipe of the upper floor A is placed in the upper receiving port 35 of the drainage stack 30. The lower end straight pipe portion 27 of the joint 20 is inserted. In this state, the upper body 21a is temporarily placed on the lower body 21b of the drainage pipe joint 20 on the lower floor B while further displacing the drainage stack 30 and the upper body 21a together. Next, the lower flange 41 of the upper body 21a and the upper flange 42 of the lower body 21b are formally connected via the packing 40p, whereby the renewal of the drainage stack 30 on the lower floor B is completed.

In the present embodiment, an example in which the drainage stack 30 is constituted by the first and second stacks 30a, 30b and the socket 50 has been shown. However, as shown in FIG. It is also possible to use it.
Moreover, in this embodiment, although the upper body 21a provided with the cylindrical part 21e expanded in diameter between the upper receptacle 22 and the lower flange 41 was used as the upper body 21a of the drain pipe joint 20, as shown in FIG. In addition, it is also possible to use a short upper body 21e that does not have the cylindrical portion 21e and in which almost the entire internal space is occupied by the upper receiving port.
Moreover, although the drain pipe joint 20 in which the side branch pipe receiving port 25 is directly formed on the side surface of the lower body 21b of the drain pipe joint 20 is illustrated, as shown in FIG. It is also possible to use the drainage pipe joint 20 configured to connect the header pipes 28 and 29 provided to the side surface of the lower body 21b.

<Advantages of drainage facility 10 and renewal method according to this embodiment>
According to the drainage facility 10 according to the present embodiment, the lower end straight pipe portion 27 of the drainage pipe joint 20 on the upper floor A and the upper end part of the drainage stack 30 on the lower floor B are configured to be separable by the upper receiving port 35. The drainage pipe joint 20 on the lower floor B is configured such that the upper body 20a and the lower body 20b can be disconnected by a lower flange 41, an upper flange 42, and the like. Therefore, the drainage stack 30 on the lower floor B and the upper body 20a of the drainage pipe joint 20 on the lower floor B can be integrally removed from the drainage facility 10. Therefore, it becomes unnecessary to cut the old drainage stack 30, and the old drainage stack 30 can be easily removed.
Further, after a new drainage stack 30 is inserted and connected to the upper body 20a of the drainage pipe joint 20 on the lower floor B, the drainage stack 30 is connected to the upper receiving port 35, and the upper body 20a is connected to the lower flange 41 and the upper flange. It is possible to restore the drainage facility 10 integrally by 42 or the like. This eliminates the need for an exchange joint or the like for adjusting the pipe length at the intermediate portion of the drainage standpipe 30 as in the prior art, which can reduce costs and facilitates the restoration of a new drainage standpipe 30 and the like. become.

Further, the depth of penetration of the upper receiving port 35 of the drainage stack 30 is such that the drainage stack 30 is set to a predetermined dimension U from the state where the upper receiving port 35 and the lower end straight pipe portion 27 of the drainage pipe joint 20 are connected. The dimension is set such that it can be displaced upward. Therefore, after the upper body 20a and the lower body 20b of the drainage pipe joint 20 on the lower floor B are separated by the lower flange 41, the upper flange 42, etc., the drainage stack 30 on the lower floor B is easily displaced upward. Therefore, it becomes easy to remove the upper body 20a of the drainage pipe joint 20 on the lower floor B from above the lower body 20b. After removing the upper body 20a from the lower body 20b, the upper receptacle of the drainage stack 30 is pulled from the lower end straight pipe portion 27 of the drainage pipe joint 20 on the upper floor A by pulling the drainage stack 30 downward. 35 can be pulled out easily.
A band-shaped regulating member 70 that can regulate the amount of insertion into the upper receiving port 35 of the drainage stack 30 is attached to the lower end straight pipe portion 27 of the drainage pipe joint 20 in a removable state. For this reason, the insertion amount can be kept constant by the regulating member 70 when the lower end straight pipe portion 27 of the drainage pipe joint 20 is inserted and connected to the upper receiving port 35 of the drainage stack 30 at the time of new installation.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the method for updating the drainage stack 30 according to the present embodiment, an example in which the drainage stack 30 including the upper receiving port 35 is used has been shown. However, as shown in FIGS. 7 and 9, the upper receiving port 35 is not provided. It is also possible to use the drainage stack 30. In this case, a non-hub coupling 80 which is a pipe connection mechanism as shown in FIG. 8 is preferably used. 7 illustrates a case where a hard PVC-lined steel pipe for drainage is used for the drainage stack 30, and FIG. 9 uses a fireproof double-layer pipe having an outer pipe made of fiber-reinforced mortar for the drainage stack 30. The case is illustrated.
As shown in FIG. 8, the non-hub coupling 80 includes a cylindrical sealing material 82 and a fastener 86 that surrounds the sealing material 82 and is configured to be able to fasten the sealing material 82 from the outside in the radial direction. It is configured.
The sealing material 82 is a rubber material provided with ring-shaped irregularities formed in the circumferential direction of the inner peripheral surface. The lower straight pipe portion 27 of the drainage pipe joint 20 on the upper floor A is inserted from above, and the lower floor B A straight tubular upper end 30u of the drainage stack 30 is configured to be inserted from below. A ring-shaped spacer 84 is sandwiched between the lower end straight pipe portion 27 of the drainage pipe joint 20 on the upper floor A and the drainage stack 30 on the lower floor B.
The ring-shaped spacer 84 is formed with the same outer diameter and inner diameter as the lower end straight pipe portion 27 and the drainage stack 30 of the drainage pipe joint 20, and the lower end straight pipe portion 27 and the drainage standpipe of the drainage pipe joint 20. 30 is coaxially held between the two.
As shown in FIG. 8, the fastener 86 is a pair of supports provided at one end and the other end of a metal cylindrical portion 86 t opened at one place in the circumferential direction, and an open portion of the cylindrical portion 86 t. It is comprised from the piece 86s and the volt | bolt & nut 86n which connects those support pieces 86s. The cylindrical portion 86 t is a portion that covers the sealing material 82, and is formed with an axial length that is substantially equal to the sealing material 82. The pair of support pieces 86s are formed with through holes (not shown) through which the bolts are passed, and the bolts are passed through the through holes and the nuts are tightened so that the interval between the pair of support pieces 86s is narrowed. As a result, the diameter of the cylindrical portion 86t is reduced. As a result, the sealing material 82 is fastened to the cylindrical portion 86t, and the lower end straight pipe portion 27 of the drainage pipe joint 20 accommodated in the sealing material 82 and the drainage stack 30 are connected in a watertight state.

Next, a procedure for updating the drainage stack 30 on the lower floor in the drainage facility 10 shown in FIG. 7 will be described.
First, the connection between the lower flange 41 of the upper body 21a and the upper flange 42 of the lower body 21b in the drainage pipe joint 20 on the lower floor is released.
Next, the bolts & nuts 86n of the fasteners 86 of the non-hub coupling 80 located between the lower end straight pipe portion 27 of the upper floor drain pipe joint 20 and the lower floor drain stack 30 are loosened. As a result, the sealing material 82 can be displaced upward along the lower end straight pipe portion 27. And the ring-shaped spacer 84 and the upper end part 30u of the drainage stack 30 are exposed by displacing the sealing material 82 upward. Next, with the ring-shaped spacer 84 removed, the drainage stack 30 and the upper body 21a of the drainage pipe joint 20 on the lower floor are integrally displaced upward by the thickness of the spacer 84. Thereby, the upper body 21a and the lower body 21b of the drainage pipe joint 20 on the lower floor can be separated. Next, in this state, as shown in FIG. 7B, the old drainage stack 30 and the upper body are moved by integrally moving the drainage stack 30 and the upper body 21a on the lower floor in the lateral direction. 21 a can be separated from the drainage facility 10. And the removal of the old drainage stack 30 is completed by pulling out the drainage stack 30 of the removed lower floor from the upper receptacle 22 of the upper body 21a.

The material of the ring-shaped spacer 84 is not particularly limited. As shown in FIG. 7, the material is directly applied to the lower end straight pipe portion 27 of the upper floor drainage pipe joint 20 and the lower floor drainage stack 30. It may be brought into contact with and held between the two, but various forms can be taken in consideration of the workability of the removal work of the spacer 84 described above. Various forms corresponding to the sandwiched portion of the spacer 84 shown as X in FIG. 7 are shown in FIG. 10 as exploded sectional views. For example, as shown in FIG. 10 (A), it is preferable that the spacers 84 are sandwiched between the spacers 84 with ring-shaped interposed bodies 85a and 85b made of a water-soluble material or a sublimable material interposed therebetween. As the ring-shaped interposers 85a and 85b, for example, polyvinyl alcohol having a thickness of about 1 mm can be used. When the ring-shaped spacer 84 is sandwiched between the drainage stacks 30 on the lower floor B, workability is good if the ring-shaped interposers 85a and 85b are attached to the upper and lower surfaces of the spacer 84 in advance. . Since such ring-shaped interposers 85a and 85b disappear with time, drainage of the upper floor in a state where there is a gap equivalent to the thickness of the ring-shaped interposers 85a and 85b in the non-hub coupling 80. It becomes the appearance arrange | positioned between the lower end straight pipe part 27 of the pipe joint 20, and the drainage stack 30 of a lower floor. Therefore, when the drainage stack 30 is updated, the ring-shaped spacer 84 can be easily removed.
Further, as shown in FIG. 10B, the contact surface of the ring-shaped spacer 84 with the lower end straight pipe portion 27 of the drain pipe joint 20 and the contact surface with the drainage stack 30 on the lower floor are releasable. It is also preferable that it is made of a material. The releasable coatings 84a and 84b can be provided by applying a releasable coating material to the upper and lower surfaces of the ring-shaped spacer 84. Examples of the releasable material include polytetrafluoroethylene. If the coatings 84a and 84b are formed of polytetrafluoroethylene, not only is the mold releasability excellent, but also the corrosion resistance is excellent. Can also be prevented. The ring-shaped spacer 84 as shown in FIG. 10 (B) can be easily brought into direct contact with the lower end straight pipe portion 27 of the drainage pipe joint 20 and the drainage stack 30 on the lower floor and sandwiched between them. Can be removed. In this case, at least the contact surface with the lower end straight pipe portion 27 of the drainage pipe joint 20 and the contact surface with the drainage stack 30 on the lower floor may be made of a releasable material. ), The entire ring-shaped spacer 84 may be formed of a releasable material.

The drainage stack 30 is restored in the reverse procedure. That is, in contrast to the arrow direction shown in FIG. 7B, the new drainage stack 30 and the upper body 21a are integrally moved in the lateral direction, and the drainage stack 30 and the upper body 21a are moved to the lower floor. Temporarily placed on the lower body 21 b of the drainage pipe joint 20. Next, a ring-shaped spacer 84 is interposed between the lower end straight pipe portion 27 of the drainage pipe joint 20 on the upper floor and the drainage stack 30 on the lower floor. Then, the upper body 21 a and the lower body 21 b of the drainage pipe joint 20 on the lower floor are connected by the lower flange 41 and the upper flange 42.
Next, the seal member 82 of the non-hub coupling 80 is displaced downward along the lower end straight pipe portion 27 to cover the ring-shaped spacer 84 and the upper end portion 30 u of the drainage stack 30 with the seal member 82. be able to. In this state, the sealing member 82 is tightened from the outside in the radial direction by the fastener 86, whereby the lower end straight pipe portion 27 of the drainage pipe joint 20 on the lower floor and the drainage stack 30 are connected in a watertight state. This completes the update of the drainage stack 30 on the lower floor.
Thus, even in a drainage facility that uses a straight tubular drainage stack 30 that does not have an upper receptacle, the drainage stack 30 can be removed without cutting.

Moreover, in this embodiment, although the example which forms the upper receptacle 35 by expanding the upper end part of the inner pipe 31 of the drainage stack 30 (1st standpipe 30a) was shown, as shown in FIG. The upper end portion insertion opening of the inner tube 31 may be provided by joining to the tubular socket 60. The socket 60 has an upper receptacle 35 in which the lower end straight pipe portion 27 of the drain pipe joint 20 can be inserted and an upper seal material 67 is provided in the opening above the socket 60. The straight tubular upper end of the tube 30a) has a lower receiving port 62 into which the tube 30a) can be inserted. On the inner surface of the socket 60, a protrusion 61 is provided between the upper receiving port 35 and the lower receiving port 62, in which a tapered boundary expanding portion 61 a that expands toward the upper receiving port 35 is formed. The protrusion 61 regulates the insertion length of the inner pipe 31 with respect to the socket 60 and can secure a size that allows the upper receiving port 35 to be inserted, and the boundary expanding portion 61 a provided on the protrusion 61 allows the drain pipe joint 20 to be inserted. It is also possible to flow down without breaking the swirling flow formed in (1). In particular, the taper-shaped boundary expanding portion 61a is configured to reduce the amount of drainage that collides with the boundary expanding portion 61a when the inclination θ with respect to the axis of the drainage stack 30 (first rising tube 30a) is 15 ° or more and 40 ° or less. It is preferable because the resistance can be reduced and the swirl flow formed by the drain pipe joint 20 is more difficult to break. Note that the linear portion dimension Dx of the upper receptacle 35 corresponds to Nmax of the present embodiment shown in FIG. 2B, and is preferably set to 85 mm or more, more preferably 110 mm or more.
Moreover, in this embodiment, although the example which refills the trunk | drum 21 of the drain pipe joint 20 with the mortar Mr in the state penetrated to the through-hole CH of concrete slab CS was shown, as shown in FIG. It is also possible to fill the upper part of the through-hole CH with, for example, mortar Mr of about 3 cm while being filled with rock wool G. This can reduce the lifting work when removing the common drain pipe.
Moreover, in this embodiment, although the example which repairs and corrects the drainage pipe joint 20 was shown, as shown in FIG.9 (C), as shown to FIG.9 (C), the upper trunk | drum 21a and the lower trunk | drum 21b are connected to a through-hole. It is also possible to remove from the CH and use the new upper body 21a and lower body 21b.
Moreover, in this embodiment, although the example which uses a fireproof double layer pipe and the hard polyvinyl chloride lining steel pipe for drainage was shown as the drain standpipe 30, a cast iron pipe and a resin pipe may be used instead of a fireproof double layer pipe etc. Is possible.

  Further, in the drain pipe joint 20 according to the present embodiment, an example of the vertical connection mechanism connected by the lower flange 41 of the upper body 21a and the upper flange 42 of the lower body 21b has been shown. A vertical connection mechanism that does not depend can also be adopted. Another example of the longitudinal connecting mechanism is shown in FIG. The vertical coupling mechanism of the drainage pipe joint 90 includes a straight tubular lower straight pipe portion 91 a formed at the lower portion of the upper body 91, an enlarged diameter portion 92 a formed at the upper portion of the lower body 92, and an annular packing 93. And a push ring member 94. The enlarged diameter portion 92a formed at the upper portion of the lower body 92 is formed so that the lower straight pipe portion 91a can be fitted therein, and the packing is attached inside the opening with a step shape and the side surface being inclined in a tapered shape. A portion 92b is formed and an annular packing 93 is attached. A lower straight pipe portion 91 a of the upper body 91 is fitted on the enlarged diameter portion 92 a of the lower body 92 via an annular packing 93. The push ring member 94 is loosely fitted in the lower straight pipe portion 91a of the upper body 91, and a flange portion 94a that extends outwardly perpendicular to the axis of the upper body 91, and extends inward and slightly downward. And a pressing portion 94b formed as a constricted shape. The press ring member 94 is fixed to the upper portion of the lower body 92 so that the flange portion 94a can be attached and detached with a bolt 94c. At this time, the annular packing 93 is pressed from above by the pressing portion 94b by tightening the bolt 94c. As a result, the annular packing 93 is compressed and deformed to come into close contact with the outer peripheral surface of the upper body 91 and the inner surface of the packing mounting portion 92b of the lower body 92, and the upper body 91 and the lower body 92 are connected in a watertight state.

  In the drainage facility according to the present embodiment, an example in which the weight of the drainage stack 30 is supported mainly on the upper surface of the backfill mortar Mr via the drainage pipe joint 20 is shown in FIG. As described above, the drainage stack 30 may be supported by the lifting tool 52 suspended from the upper concrete slab CS. The suspension 52 is a pair of engagement rings 53 and 54 that are tightened to face each other and sandwich the drainage stack 30, and the engagement rings 53 and 54 are suspended from the lower surface of the concrete slab CS. Are provided with two leg portions 55, and a tongue buckle 59 that connects the engagement rings 53, 54 and the leg portion 55. As shown in FIG. 15 (B), the pair of engagement rings 53 and 54 have the same shape, and the semicircular arc portions 53a and 54a and both end portions of the semicircular arc portions 53a and 54a, respectively. Arm portions 53b and 54b extending in the radial direction. With the drainage stack 30 firmly sandwiched between the opposing semicircular arc portions 53a and 54a, the engagement rings 53 and 54 are fixed in an opposed state by bolts and nuts 57 at the left and right sides of the arm portions 53b and 54b. ing. At the left and right end positions of the fixing portion, the arm portions 53b and 54b are not only fixed to each other but also connected to the leg portion 55 via the tangle buckle 58. As shown in FIG. 15A, the turnbuckle 58 includes a rotating nut 58a in which a main body 59 formed by bending a metal plate and a screw formed on the lower end of the leg 55 can be screwed together. It consists of and. The main body 59 includes a pair of hanging support pieces 59a and 59b in which opposed bolt holes are formed, and a through hole 59c through which a rotating nut 58a formed at the upper end can be inserted. A flange 58b is formed at the lower end of the rotary nut 58a. The rotary nut 58a is rotatably inserted into the through hole 59c of the main body 59 and is prevented from coming off by the flange 58b. The support pieces 59a and 59b are fixed to the engagement rings 53 and 54 by bolts and nuts 57 with the arm portions 53b and 54b of the engagement rings 53 and 54 sandwiched therebetween. As a result, a screw formed on the lower end of the leg portion 55 is screwed into the rotating nut 58a, so that the engagement rings 53, 54 and the lower end of the leg portion 55 whose upper end is fixed to the lower surface of the concrete slab CS are in contact with each other. It is connected via a buckle 58.

The drainage standpipe 30 according to the present embodiment is a fireproof double-layer pipe with a receptacle in which a hard vinyl chloride inner tube 31 is coated with a fiber reinforced mortar outer tube 39 as described above. When supporting the tube 30, it is preferable that a step (ago portion 39 a) formed on the upper portion of the outer tube 39 is engaged with the engagement rings 53 and 54. As shown in FIG. 14, the outer tube 39 includes a receiving port covering portion 35 a that covers the upper receiving port 35 and a straight tube portion covering portion 32 a that covers the straight tube portion 32. The receiving port covering portion 35a has a substantially cylindrical shape, and the inner surface has a shape along the expanded outer peripheral shape of the upper receiving port 35, and a receiving portion 35b for receiving the upper end of the straight tube portion covering portion 32a at the lower end. Is formed. It is preferable to use a molded product that has been previously molded in a separate process for the receptacle covering portion 35a. The straight pipe portion covering portion 39b has a cylindrical shape, and generally a molded product is used. The inner tube 31 is inserted into the receiving port covering portion 35a and the straight tube portion covering portion 32a to be in a covered state, and both are joined in a state where the upper end of the straight tube portion covering portion 32a is accommodated in the accommodating portion 35b of the receiving port covering portion 35a. . Since the tapered boundary expanding portion 33 is formed between the upper receiving port 35 and the straight pipe portion 32, the outer periphery of the straight pipe portion covering portion 32a is formed smaller than the receiving port covering portion 35a. The jaw part 39a is provided as a generated step. The hanging tool 52 can be locked by the jaw portion 39a. That is, the straight pipe portion 32 directly under the jaw portion 39a is firmly sandwiched between the engagement rings 53 and 54 with the jaw portion 39a being hung on the engagement rings 53 and 54. In this case, the material of the drainage stack 30 is not particularly limited as long as it is provided with a receiving port, and a cast iron pipe for drainage or a hard PVC-lined steel pipe for drainage can also be used. In that case, it is preferable to sandwich between the semicircular arc portions 53a and 54a and the drainage stack with the anti-vibration rubber with the engagement ring in consideration of sound and vibration. In this way, the drainage facility in which the drainage stack 30 is supported by the lifting tool 52 has a drainage pipe joint 20 filled with the rock wool G in the throughhole CH, and a mortar of about 3 cm, for example, above the throughhole CH. This is particularly effective when it is backfilled with Mr filled. Thereby, even when the drainage pipe joint 20 needs to be renewed, the mortar Mr can be easily destroyed, but the support strength of the drainage stack 30 can be maintained during normal use.
In addition, it cannot be overemphasized that the hanger 52 may be provided in the straight pipe part of the drainage stack 30.

  Moreover, the material of the drain pipe joint 20 according to the present embodiment is not particularly limited, and may be, for example, a resin or a two-layer pipe joint in which it is covered with mortar or the like.

It is a side view of the drainage equipment concerning Embodiment 1 of the present invention. It is a top view (A figure) of the control member used with the drainage equipment concerning this embodiment, and a longitudinal section (B figure) of the upper receptacle of a drainage stack. It is a side view showing the update method of the drainage equipment which concerns on this embodiment. It is a side view showing the update method of the drainage equipment which concerns on this embodiment. It is a side view showing the update method of the drainage equipment which concerns on this embodiment. It is a side view showing the update method of the drainage equipment which concerns on this embodiment. It is a side view (A figure, B figure) showing the example of a change of the update method of the drainage equipment which concerns on this embodiment. It is the top view (A figure) and side view (B figure) of the piping connection mechanism used with the drainage equipment which concerns on this embodiment. It is a side view (A figure, B figure, C figure) showing the example of a change of the update method of the drainage equipment which concerns on this embodiment. FIG. 8 is an exploded sectional view (A, B, C) showing various forms corresponding to the sandwiched portion of the ring-shaped spacer shown in FIG. 7. It is sectional drawing showing the example of a change of the upper receptacle of the drainage stack used with the drainage equipment which concerns on this embodiment. It is a figure showing the example of a change of the vertical direction connection mechanism of the drainage pipe joint used with the drainage equipment which concerns on this embodiment, A figure is a cross-sectional view, B figure is a longitudinal cross-sectional view. It is a side view showing the example of a change of the drainage equipment which concerns on this Embodiment 1. FIG. It is sectional drawing of the upper part of the drainage stack used with the drainage facility described in FIG. It is a perspective view of the components which comprise the hanging tool used with the drainage facility described in FIG. 13, A figure has shown the tumble buck, B figure has shown the engagement ring. It is a side view showing the removal method of the drainage stack in the conventional drainage equipment. It is a side view showing the removal method of the drainage stack in the conventional drainage equipment. It is a side view showing the conventional drainage equipment.

Explanation of symbols

CS Concrete slab CH Through hole Mr Mortar G Rock wool 10 Drainage equipment 20 Drainage pipe joint 21a Upper body 21b Lower body 22 Upper receptacle (pipe connection mechanism)
27 Bottom straight pipe part (lower connection part, pipe connection mechanism)
30 Drainage pipe 31 Inner pipe 31s Lower end insertion port 33 Boundary widening portion 35 Upper receiving port 39 Outer tube 41 Lower flange 42 Upper flange 52 Lifting tool 60 Upper seal socket 61 Projection 61a Boundary widening portion 62 Lower receiving port 70 Restriction member 80 Non-hub coupling (Piping connection mechanism)
82 Sealing material 84 Ring-shaped spacer 86 Fastener 90 Drainage pipe joint 91 Upper body 91a Lower straight pipe part 92 Lower body 92a Expanded diameter part 92b Packing mounting part 93 Annular packing 94 Push ring member

Claims (17)

The drainage horizontal branch pipe provided on the upper floor of the apartment building is connected to the horizontal branch pipe receiving port of the drainage pipe joint, and the drainage stack on the upper floor is connected to the upper receiving port of the drainage pipe joint, and the lower part of the drainage pipe joint A drainage system configured to connect the drainage of the upper floor to the lower floor by gravity, wherein the connecting portion is connected to the drainage stack of the lower floor,
The drainage pipe joint is configured to be attached through an upper body having the upper receptacle, and a concrete slab that partitions the upper and lower floors of the apartment house, and a lower body having the lower connecting portion, and an upper body thereof And the lower body are connected in a watertight manner and have a longitudinal connection mechanism configured to be disengaged,
The lower connecting part of the lower body of the drainage pipe joint and the upper end of the drainage stack on the lower floor are connected in a watertight manner to the lower connection part of the drainage pipe joint and the drainage stack on the lower floor. In addition, a drainage facility characterized in that a separable pipe connection mechanism is provided. A drainage facility according to claim 1,
The vertical coupling mechanism includes a lower flange formed at a lower portion of the upper body, and an upper flange formed at an upper portion of the lower body. The lower flange of the upper body, the upper flange of the lower body, The drainage system is configured to be connected in a watertight state and to be disengaged. A drainage facility according to claim 1,
The vertical coupling mechanism includes a straight tubular lower straight pipe portion formed at a lower portion of the upper body, and an enlarged diameter portion formed at an upper portion of the lower body and into which the lower straight pipe portion of the upper body can be fitted. And an annular packing mounted on the packing mounting portion formed inside the opening of the enlarged diameter portion, and a push that is loosely fitted to the outer periphery of the lower straight pipe portion of the upper body and is detachably fixed to the lower body A ring member,
The lower straight pipe portion of the upper body is fitted to the enlarged diameter portion of the lower body via the annular packing, and the annular packing is pressed from above by the push ring member to be compressed and deformed. A drainage facility that is in close contact with an outer peripheral surface and an inner surface of a packing mounting portion of the lower body, and that the upper body and the lower body are connected in a watertight state and can be disconnected. . A drainage facility according to any one of claims 1 to 3,
The pipe connection mechanism is composed of a straight tubular lower connection part of a drainage pipe joint and an upper receptacle formed at the upper end part of the drainage stack and into which the lower connection part of the drainage pipe joint is inserted and connected. ,
The size of the upper receptacle that can be inserted is set to a size that allows the drainage stack to be displaced upward by a predetermined dimension from the state in which the upper receptacle and the lower connection portion of the drainage pipe joint are connected. Drainage equipment characterized by being. A drainage facility according to claim 4,
The drainage stack has a straight pipe part and an upper receptacle formed at the upper end of the straight pipe part, and a tapered boundary widening part is formed between the straight pipe part and the upper receptacle. The drainage facility is characterized in that an inclination of the boundary widening portion with respect to the axis of the drainage stack is 15 ° or more and 40 ° or less. A drainage facility according to claim 4,
The upper receiving port of the drainage stack is tubular and has an upper receiving port to which the lower connection portion of the drainage pipe joint is inserted and connected to the upper side. An upper end portion of the drainage stack is fitted and joined to a lower receiving port of a socket having a side receiving port, and the socket is provided between the upper receiving port and the lower receiving port on the upper receiving port side. Protrusions having a tapered boundary expanding portion that expands are provided, and the inclination of the boundary expanding portion with respect to the axis of the drainage stack is not less than 15 ° and not more than 40 ° Facility. A drainage facility according to any one of claims 4 to 6,
The drainage facility characterized in that the size of the upper receptacle can be inserted is 85 mm or more. A drainage facility according to any one of claims 4 to 7,
A drainage facility characterized in that a band-shaped regulating member capable of regulating the amount of insertion into the upper receiving port of the drainage stack is attached to the straight tubular lower connection part of the drainage pipe joint in a removable state. A drainage facility according to any one of claims 1 to 3,
The pipe connection mechanism includes a cylindrical sealing material configured such that a straight tubular lower connection portion of a drainage pipe joint is inserted from above, and a straight tubular upper end portion of a drainage stack is inserted from below, drainage Consists of a ring-shaped spacer that is clamped coaxially between the lower connection part of the pipe joint and the drainage stack, and a cylindrical fastener that can tighten or release the sealing material from the outside in the radial direction. Drainage equipment characterized by being. A drainage facility according to claim 9, wherein
The ring-shaped spacer is sandwiched between a lower connecting portion of a drainage pipe joint and a drainage stack through a ring-shaped interposer made of a water-soluble material or a sublimable material. . The drainage facility according to claim 9, wherein at least the contact surface with the lower connecting portion of the drainage pipe joint and the contact surface with the drainage stack are made of a releasable material. Drainage equipment characterized by that. A drainage facility according to any one of claims 1 to 11,
The drainage system according to claim 1, wherein the upper body of the drainage pipe joint is almost entirely occupied by an upper receptacle. A drainage facility according to any one of claims 1 to 12,
A drainage facility, wherein a hanging tool is suspended from a concrete slab that divides the upper floor and the lower floor, and the drainage stack is suspended from the suspension tool. It is the update method of the drainage facility described in Claim 8, Comprising:
A connection releasing step for releasing the connection between the upper body and the lower body by the longitudinal connection mechanism of the drainage pipe joint on the lower floor;
Before or after the decoupling step, removing the band-shaped regulating member attached to the lower connection part of the drainage pipe joint on the upper floor,
With the lower connection part of the drainage pipe joint on the upper floor inserted and connected to the upper receptacle of the drainage pipe on the lower floor, the drainage pipe on the lower floor and the upper body of the drainage pipe joint on the lower floor above The upper body is separated from the lower body in a lateral direction while being displaced, and then the drainage stack is displaced downward integrally with the upper body so that the lower connection portion of the drainage pipe joint on the upper floor A step of removing the drainage stack, separating the upper receptacle of the drainage stack, and further pulling out the lower end of the drainage stack from the upper receptacle of the upper body;
Insert the lower end of a new drainage stack cut to a predetermined length into the upper receptacle of the upper body after separation, and connect the upper receptacle of the new drainage stack to the lower connection part of the drainage pipe joint on the upper floor In this state, the recovery process of connecting the upper body after separation to the lower body of the drainage pipe joint on the lower floor by the vertical connection mechanism,
A method for renewing a drainage facility, characterized by comprising: It is the update method of the drainage facility described in Claim 8, Comprising:
A connection releasing step for releasing the connection between the upper body and the lower body by the longitudinal connection mechanism of the drainage pipe joint on the lower floor;
Before or after the decoupling step, removing the band-shaped regulating member attached to the lower connection part of the drainage pipe joint on the upper floor,
With the lower connection part of the drainage pipe joint on the upper floor inserted and connected to the upper receptacle of the drainage pipe on the lower floor, the drainage pipe on the lower floor and the upper body of the drainage pipe joint on the lower floor above The upper body is separated from the lower body in a lateral direction while being displaced, and then the drainage stack is displaced downward integrally with the upper body so that the lower connection portion of the drainage pipe joint on the upper floor A removal step of separating the upper receptacle of the drainage stack and further removing the lower body of the drainage pipe joint on the lower floor from the through hole of the concrete slab;
A step of passing a lower body of a drainage pipe joint of a new lower floor through a through hole of the concrete slab, and inserting and connecting a lower connection portion of the lower body to an upper receiving port of a drainage stack arranged below the concrete slab When,
Insert the lower end of a new drainage stack, cut to the specified length, into the upper receptacle of the new upper fuselage, and connect the upper receptacle of the new drainage stack to the lower connection of the drainage pipe joint on the upper floor In this state, a recovery step of connecting the upper body to the lower body of the drainage pipe joint on the lower floor by the vertical connection mechanism,
A method for renewing a drainage facility, characterized by comprising: A method for updating a drainage facility according to any one of claims 9 to 11,
A connection releasing step for releasing the connection between the upper body and the lower body by the longitudinal connection mechanism of the drainage pipe joint on the lower floor;
Before or after the connection release step, the tightening of the fastener of the pipe connection mechanism is released, and the cylindrical sealing material of the pipe connection mechanism is displaced upward along the lower connection portion of the drainage pipe joint on the upper floor. Exposing the upper end of the ring-shaped spacer and the drainage stack on the lower floor;
The ring-shaped spacer is removed, and the drainage stack on the lower floor and the upper body of the drainage pipe joint on the lower floor are displaced upward by the thickness of the spacer, and the drainage stack and the upper body are laterally moved. Removing the drainage pipe from the drainage facility, and then removing the drainage stack from the upper receiving port of the upper body,
After inserting the lower end of a new drainage stack cut to a predetermined length into the upper receptacle of the separated upper fuselage, the separated upper fuselage and the new drainage stack are connected to the drainage pipe joint on the lower floor. Temporarily placing on the lower body, interposing the ring-shaped spacer between the new drainage stack and the lower connection portion of the drainage pipe joint on the upper floor;
The tubular seal member of the pipe connection mechanism is displaced downward along the lower connection portion of the upper-floor drainage pipe joint to cover the ring-shaped spacer and the upper end portion of the lower-floor drainage stack, and the sealant A recovery step of connecting the upper body after separation to the lower body of the drainage pipe joint on the lower floor by the vertical connection mechanism,
A method for renewing a drainage facility, characterized by comprising: A method for updating a drainage facility according to any one of claims 9 to 11,
A connection releasing step for releasing the connection between the upper body and the lower body by the longitudinal connection mechanism of the drainage pipe joint on the lower floor;
Before or after the connection release step, the tightening of the fastener of the pipe connection mechanism is released, and the cylindrical sealing material of the pipe connection mechanism is displaced upward along the lower connection portion of the drainage pipe joint on the upper floor. Exposing the upper end of the ring-shaped spacer and the drainage stack on the lower floor;
The ring-shaped spacer is removed, and the drainage stack on the lower floor and the upper body of the drainage pipe joint on the lower floor are displaced upward by the thickness of the spacer, and the drainage stack and the upper body are laterally moved. And removing from the drainage facility, and removing the lower body of the drainage pipe joint on the lower floor from the through hole of the concrete slab,
Pass the lower body of the drainage pipe joint of the new lower floor through the through hole of the concrete slab, and connect the lower connection part of the lower body to the upper end part of the drainage stack arranged on the lower side of the concrete slab by the pipe connection mechanism. Connecting, and
After inserting the lower end of a new drainage stack cut to a predetermined length into the upper receptacle of the new upper body, the upper body and the new drainage stack are temporarily placed on the lower body of the drainage pipe joint on the lower floor. Placing the ring-shaped spacer between the new drainage stack and the lower connection part of the drainage pipe joint on the upper floor;
The tubular seal member of the pipe connection mechanism is displaced downward along the lower connection portion of the upper-floor drainage pipe joint to cover the ring-shaped spacer and the upper end portion of the lower-floor drainage stack, and the sealant A recovery step of connecting the upper body to the lower body of the drainage pipe joint on the lower floor by the vertical connection mechanism,
A method for renewing a drainage facility, characterized by comprising:

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