JP2009270345A - Drainage apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively renew a drain riser only on a specific floor of an apartment housing. <P>SOLUTION: The drain riser 30 of this drainage apparatus comprises a socket 35 and a spigot 31s for a joint. A drain pipe joint 20 comprises an upper socket section 200 and a pipe joint body section 21. The upper socket section 200 and the pipe joint body section 21 are connectable to and disconnectable from each other. The lower end straight pipe section 225 of the drain pipe joint 20 on the upper floor is inserted and connected to the socket 35 of the drain riser 30. The spigot 31s of the drain riser 30 is inserted and connected to the upper socket section 200 of the drain pipe joint 20 on the lower floor. The inserted depth dimension of the socket 35 is so set as to move the drain riser 30 a predetermined dimension K upward from the state in which the lower end straight pipe section 225 of the drain pipe joint on the upper floor is inserted and connected. The inserted depth dimension D of the upper socket section 200 of the drain pipe joint 20 on the lower floor is set to a value smaller than the predetermined dimension K. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a drainage pipe joint that is installed on each floor through a concrete slab that partitions the upper floor and lower floor of an apartment building, and a pipe between the drainage pipe joint on the upper floor and the drainage pipe joint on the lower floor. The present invention relates to a drainage facility including a drainage standpipe.

A technique relating to the above-described drainage facility is described in Patent Document 1.
As shown in FIGS. 7 and 8, the drainage facility 100 includes drainage pipe joints 110 that are installed on each floor through a concrete slab CS that partitions the upper and lower floors of an apartment house. The drainage pipe joint 110 is a joint that joins the drainage led by the drainage stack 102 on the upper floor and the drainage branch pipe 103 and flows into the drainage stack 102 on the lower floor, and the trunk portion 111 thereof is a concrete slab CS. It is fixed with backfill mortar or the like while being passed through the through-hole CH.
The drainage stack 102 is provided with a joint 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 joint receiving port 102u. Further, the 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.

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 on the lower floor is installed, the insertion port at the lower end of the drainage stack 102 on 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 joint receiving port 102u of the drainage stack 102. Further, the insertion port of the drainage stack 102 on the upper floor is inserted and connected to the upper receiving port 112 of the drainage pipe joint 110 on the upper floor.
In the above drainage facility 100, for example, when the drainage stack 102 on the middle floor is clogged or damaged, and only the drainage stack 102 of that portion is to be renewed, as shown in FIG. Need to be cut and removed, which is time consuming.
Furthermore, when the drainage stack 102 is renewed, since the drainage pipe joints 110 on the upper floor and the lower floor are both fixed to the concrete slab CS, the single drainage stack 102 cannot be attached. For this reason, the new drainage stack 102 needs to use the two drainage stacks 102 which have an exchange joint in the intermediate part. That is, a part of the drainage stack 102 is accommodated in the exchange joint portion, and the drainage stack 102 is set between the upper floor and the lower floor drainage pipe joint 110 in a state where the total length of the drainage stack 102 is shortened. It is necessary to draw a part of the drainage stack 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 using the two drainage stacks 102 and the exchange joint increases the piping cost.

  The present invention has been made to solve the above-mentioned problems, and the technical problem of the present invention is that it is possible to update a drainage standpipe only on a specific floor such as a high-rise apartment house at low cost. is there.

The above-described problems are solved by the inventions of the claims.
The invention of claim 1 includes a drainage pipe joint installed on each floor through a concrete slab that partitions the upper floor and lower floor of the apartment, and an upper floor drainage pipe joint and a lower floor drainage pipe joint. A drainage facility comprising a drainage stand piped in between, wherein the drainage standpipe comprises a joint receiving port formed at an upper end portion and an insertion port formed at a lower end portion, and the drainage pipe The joint is composed of an upper receptacle part and a pipe joint body part, and the upper receptacle part and the pipe joint body part are configured to be connectable and disengageable, and the pipe joint body in the drainage pipe joint on the upper floor. The lower end straight pipe part formed in the part is inserted and connected to the joint receiving port of the drainage stack, and the insertion port of the drainage stack is inserted and connected to the upper receiving port part of the drainage pipe joint on the lower floor. The fitting depth of the joint receptacle is the drainage pipe joint on the upper floor. It is set so that the drainage stack can be further moved upward by a predetermined dimension from the state where the lower end straight pipe portion is inserted and connected to the joint receptacle, and the upper receptacle portion of the drainage pipe joint on the lower floor is set. The penetration depth dimension is set to a value smaller than the predetermined dimension.

According to the present invention, the penetration depth dimension of the upper receiving port portion of the drainage pipe joint on the lower floor is set to a value smaller than the predetermined dimension capable of moving the drainage stack upward. For this reason, by moving the drainage standpipe piped between the drainage pipe joint on the upper floor and the drainage pipe joint on the lower floor upward by a predetermined dimension, the outlet of the drainage pipe is connected to the drainage of the lower floor. It can be pulled out from the upper receiving port of the pipe joint. Further, from this state, the drainage stack is inclined, the insertion port at the lower end is moved in the horizontal direction, and the drainage stack is pulled obliquely downward, so that the drainage pipe joint on the upper floor is directly connected to the lower end of the drainage pipe joint. The pipe part can be pulled out.
Moreover, the drainage stack removed from the drainage pipe joint of the upper floor and the lower floor can be restored by the reverse procedure of the above. That is, the drainage stack can be updated by so-called exchange between the drainage pipe joint on the upper floor and the drainage pipe joint on the lower floor.
Therefore, it is not necessary to cut the old drainage stack when removing it. In addition, a single drainage stack having the same length as the old drainage stack can be used as a new drainage stack. For this reason, the drainage stack can be updated at low cost.
Further, the drainage pipe joint is composed of an upper receiving port part and a pipe joint main body part, and the upper receiving port part and the pipe joint main body part are configured to be connected and disconnected. For this reason, even if it is not possible to update the drainage standpipe by exchange in the old drainage facility, if the old drainage pipe joint is a model that can be divided into upper and lower parts, the upper outlet of the present invention is connected to the old drainage pipe joint. By connecting to the pipe joint body, the old drainage facility can be redesigned as a drainage facility that can update the exchange of drainage stacks.

According to the invention of claim 2, the upper receiving port portion includes a cylindrical receiving port body portion and a sealing material accommodated coaxially in the receiving port body portion, A ring-shaped seal groove extending in the circumferential direction is formed, and a seal material receiving portion is formed in an inner flange shape below the seal groove, and the seal material is formed at a cylindrical portion and an upper end of the cylindrical portion. A seal body portion having a circular cross section and a stand tube receiving portion formed in an inner flange shape at the lower end of the cylindrical portion, and the seal body portion is housed in a seal groove of the receiving body, and the stand tube A receiving part is comprised so that it may be supported from the downward direction by the sealing material receiving part of the said receiving port trunk | drum.
For this reason, the drainage standpipe can be inserted into the upper receiving port part of the drainage pipe joint until the tip (lower end) of the insertion port of the drainage stack comes into contact with the vertical pipe receiving part. Therefore, the insertion dimension of the outlet of the drainage stack can always be made constant.

The invention according to claim 3 is characterized in that the inner wall surface of the receptacle body is provided with a taper that expands downward.
For this reason, in the state where the insertion port of the drainage stack is inserted and connected to the upper receiving port part of the drainage pipe joint, the inclination angle of the drainage stack can be made relatively large, and it can withstand shaking such as an earthquake. It is valid.
According to the invention of claim 4, the depth of penetration of the drainage stack at the upper receiving port is set between 35 mm and 55 mm.
In other words, if the drainage stack is moved upward by 35 mm to 55 mm by a dimension including a clearance, the drainage stack can be pulled out from the upper receiving portion of the drainage pipe joint. For this reason, it becomes easy to update the drainage stack by exchange compared with the upper receiving port of the penetration depth dimension of 65 mm generally used conventionally.
According to the fifth aspect of the present invention, the receiving body of the upper receiving port is provided with the speed reducing guide for decelerating the swirling water flowing down to the lower side of the sealing material receiving unit.
For this reason, the drainage performance of the drainage pipe joint in a super-high-rise apartment is improved by using the said upper receptacle part.

  According to invention of Claim 6, the drainage pipe joint installed in each floor through the concrete slab which divides the upper floor and the lower floor of the apartment, the drainage pipe joint of the upper floor, and the drainage pipe joint of the lower floor A drainage stand comprising a drainage standpipe piped between, wherein the drainage standpipe comprises a joint receiving port formed at the upper end and an insertion port formed at the lower end. The lower end straight pipe portion of the drainage pipe joint on the floor is inserted and connected to the joint receiving port of the drainage stack, and the insertion port of the drainage pipe is inserted and connected to the upper receiving part of the drainage pipe joint on the lower floor Yes, the depth of penetration of the joint receptacle is such that the lower end straight pipe portion of the drainage pipe joint on the upper floor is inserted and connected to the joint receptacle and the drainage stack is further raised by a predetermined dimension. It is set to be movable and the drainage pipe on the lower floor Swallowing depth of the upper socket portion of the hand is characterized in that it is set to a value smaller than the predetermined size.

  According to the present invention, a drainage stack on a specific floor in a high-rise apartment or the like can be updated at a low cost.

[Embodiment 1]
Hereinafter, the drainage equipment according to Embodiment 1 of the present invention will be described with reference to FIGS. The drainage facility according to the present embodiment is a drainage facility in an apartment building such as a condominium or an office building. FIGS. 1 and 2 are partially broken side views of a drainage pipe joint used in the drainage facility, and an upper receiving portion. The longitudinal cross-sectional view of is shown. FIG. 3 is a side view of the drainage facility according to the present embodiment, FIG. 4 is a side view showing a state when the drainage stack is updated, and FIG. 5 is a longitudinal sectional view showing a receiving socket of the drainage stack. FIG. 6 is a partially broken side view of a drainage pipe joint used in a drainage facility according to a modified example.

<About drainage facility 10>
As shown in FIG. 3, the drainage facility 10 according to this embodiment includes a drainage pipe joint 20 and a drainage stack 30 that are installed on each floor through a concrete slab CS that partitions the upper and lower floors of an apartment house. And a drainage horizontal branch pipe 40. In the drainage facility 20, the lower end of the drainage stack 30 is connected to the drainage pipe joint 20 on the lower floor, and the lower end of the drainage pipe joint 20 on the upper floor is connected to the upper end of the drainage stack 30. It is constructed to be stacked in order from the bottom to the top.

<About drain pipe joint 20>
The drainage pipe joint 20 is a cast iron joint that joins the drainage led by the drainage stack 30 on the upper floor and the drainage branch pipe 40 and flows into the drainage stack 30 on the lower floor. The drainage pipe joint 20 is of a vertically divided type and is composed of an upper receiving port part 200 and a pipe joint main body part 21. And the upper receptacle part 200 is supported by the support stand 50 in the state in which the trunk | drum 22 of the pipe joint main-body part 21 was penetrated by the through-hole CH of concrete slab CS.
Here, the through hole CH of the concrete slab CS is filled with the rock wool W after the trunk portion 22 of the pipe joint main body portion 21 is passed, and the mortar Mr is laminated on the rock wool W. Thus, since the rock wool W is filled in the through hole CH, the drainage sound is difficult to propagate to the concrete slab CS.

<About the upper receiving port 200 of the drainage pipe joint 20>
As shown in FIG. 3, the upper receiving port portion 200 of the drainage pipe joint 20 is a portion into which an insertion port 31 s formed at the lower end of the drainage stack 30 is inserted and connected. As shown in FIGS. 1 and 2, the upper receiving port portion 200 includes a cylindrical receiving port body portion 210 and a rubber seal material 230 that is accommodated coaxially in the receiving port body portion 210. The receiving body 210 includes a cylindrical body 211 that is configured to expand downward, an annular portion 213 that is coaxially formed at the upper end of the body 211, and the body. It is comprised from the flange part 215 similarly formed in the lower end of 211 at the same axis | shaft. Further, a seal groove 212 extending in the circumferential direction is formed in a ring shape at the position of the annular portion 213 on the inner peripheral surface of the receiving body 210.
Further, an inner flange-shaped sealing material receiving portion 216 protruding inward in the radial direction is formed at the lower end position of the inner peripheral surface of the receiving mouth barrel portion 210. Here, the lower surface of the sealing material receiving portion 216 is formed to be continuous with the lower surface of the flange portion 215.

As shown in FIG. 2 and the like, the sealing member 230 of the upper receiving portion 200 is formed at the cylindrical portion 231, the seal body portion 233 having a circular cross section formed at the upper end of the cylindrical portion 231, and the lower end of the cylindrical portion 231. The inner flange-shaped vertical pipe receiving portion 235 is formed. About half of the outer peripheral side of the seal body 233 is accommodated in the seal groove 212 of the receiving body 210, and about half of the inner peripheral side protrudes radially inward from the opening of the seal groove 212. Here, the inner diameter dimension of the cylindrical portion 231 of the sealing material 230 is set larger than the outer diameter dimension of the insertion port 31 s of the drainage stack 30, and the inner diameter dimension of the seal body portion 233 is the insertion port 31 s of the drainage stack 30. Is set to be smaller than the outer diameter dimension. For this reason, when the insertion port 31 s of the drainage stack 30 is inserted into the upper receiving port part 200, only the seal body 233 is pressed radially outward from the insertion port 31 s and elastically deformed, and the seal body 233 moves upward. The space between the receiving port 200 and the drainage stack 30 is sealed.
The cylindrical portion 231 of the sealing material 230 is configured to cover the inner peripheral surface of the receiving body 210 that is configured to expand toward the lower side in a non-contact state, and the upper end of the cylindrical portion 231 is It is connected to the projecting lower end position of the seal body 233 projecting from the opening of the seal groove 212. A vertical tube receiving portion 235 formed at the lower end of the cylindrical portion 231 is supported by the upper surface 216 u of the sealing material receiving portion 216 of the receiving mouth trunk portion 210.
The standing tube receiving portion 235 of the sealing material 230 is configured to receive the lower end surface of the insertion port 31s of the drainage stack 30 by the upper end surface 235u. The axial length from the upper end surface 235u of the standing tube receiving portion 235 to the upper end surface 210u of the receiving mouth trunk portion 210 is set to 50 mm.
That is, the penetration depth dimension D of the upper receiving opening 200 is set to 50 mm.
Further, as described above, since the seal body 233 is formed in a circular cross section, the insertion port 31s of the drainage stack 30 is pulled out as compared with the bowl-shaped seal body that is generally used conventionally. It becomes easy.

<About the pipe joint body 21 of the drain pipe joint 20>
As shown in FIG. 1, the pipe joint main body portion 21 of the drainage pipe joint 20 includes a trunk portion 22 that is passed through the through hole CH of the concrete slab CS. The trunk portion 22 includes a trunk body 221, a tapered diameter-reducing portion 223, and a lower end straight pipe portion 225 in order from the top, and an upper flange 220 is coaxially provided at the upper end of the trunk body 221. The upper flange 220 is connected to the flange portion 215 of the upper receiving opening portion 200 with a bolt and nut N in a watertight state with the packing P interposed therebetween.
As shown in FIG. 1, on the upper side surface of the trunk body 221 of the trunk section 22, a drainage horizontal branch pipe 40 (see FIG. 3 etc.) from the sanitary ware (kitchen sink, toilet, etc.) on each floor below the upper flange 220. ) Are connected at 90 ° intervals. A rubber seal (not shown) is also attached to the horizontal branch tube receiving port 25 in the same manner as the upper receiving port portion 200.
Furthermore, a cleaning port 26 with a lid is provided on the upper side surface of the body main body 221 of the body part 22 at a position rotated by 90 ° from the adjacent horizontal branch pipe receiving port 25.

As shown in FIG. 1, first swirl vanes 23 a for swirling the draining water flow are formed from the body main body 221 to the tapered diameter-reduced portion 223 on the inner peripheral surface of the body 22 of the pipe joint body 21. Yes. Furthermore, a second swirl vane 23b is formed on the inner peripheral surface of the body portion 22 at a position where the tapered diameter reducing portion 223 is rotated by about 180 ° from the first swirl vane 23a. The trunk portion 22 of the pipe joint main body portion 21 is configured such that the lower end straight pipe portion 225 protrudes from the lower surface of the concrete slab CS as shown in FIG. 3 while being passed through the through hole CH of the concrete slab CS. Has been. Furthermore, a hook-like locking portion 24 is formed on the outer peripheral surface of the lower end straight pipe portion 225 of the body portion 22.
Here, a dimension T from the lower end surface of the locking portion 24 to the tip (lower end) of the lower end straight pipe portion 225 is set to about 130 mm. Moreover, the position of the latching | locking part 24 is generally provided in the position which protrudes about 30 mm below from the through-hole CH of concrete slab CS.

<About the drainage stack 30>
As shown in FIG. 3, the drainage stack 30 includes a socket socket 35 made of cast iron and a straight pipe 31 made of hard PVC-lined steel pipe.
The receptacle socket 35 is a socket that constitutes a joint receptacle for the drainage stack 30, and as shown in FIG. 5, the central portion in the height direction (axial direction) is formed in a barrel shape with the largest diameter. . The receptacle socket 35 includes an upper end ring portion 34, a downwardly widened portion 36, a large diameter cylindrical portion 37, an upwardly widened portion 38, and a lower connection mechanism 39 in order from the top.
The upper end ring portion 34 has an outer diameter dimension substantially equal to that of the large-diameter cylindrical portion 37, and is formed so that a sealing groove 34m having a square cross section extends in the circumferential direction on the inner peripheral side. A rubber annular sealing material 33 having a circular cross section is fitted into the sealing groove 34m.
The downwardly widened portion 36 located on the lower side of the upper end ring portion 34 has an outer diameter that is substantially equal to that of the large-diameter cylindrical portion 37, and becomes constant as the wall thickness approaches the lower large-diameter cylindrical portion 37. It decreases in proportion and becomes substantially equal to the wall thickness of the large diameter cylindrical portion 37 in the vicinity of the large diameter cylindrical portion 37. Thereby, the inner peripheral surface of the downward expanding portion 36 becomes a tapered surface 36t that expands downward.
The large-diameter cylindrical portion 37 located on the lower side of the downward expanding portion 36 is formed in a cylindrical shape. An upwardly widened portion 38 located below the large-diameter cylindrical portion 37 is formed with a wall thickness equal to that of the large-diameter cylindrical portion 37. The inner peripheral surface 38e of the upward expanding portion 38 is expanded upward at an inclination angle of about 15 ° with respect to the axial center.

The lower connection mechanism 39 located on the lower side of the upward expansion portion 38 is a mechanism for connecting the receiving socket 35 to the end of the straight pipe 31, and includes a receiving flange 39f including the straight pipe receiving opening 39u, a ring shape, and the like. The presser flange portion 39p, the seal ring 39x, and the bolt and nut 39z for connecting the flange portions 39f and 39p. The seal ring 39x is configured to be sandwiched between the pressing surfaces of both flanges 39f and 39p, and can be deformed radially inward when the bolts & nuts 39z are tightened and the flanges 39f and 39p approach each other. Has been. For this reason, as shown in FIG. 5, the bolt & nut 39z is tightened while the upper end insertion port 31z of the straight pipe 31 is passed through the holding flange portion 39p and the seal ring 39x and inserted into the straight pipe receiving port 39u of the receiving flange portion 39f. Thus, the socket 35 and the straight pipe 31 can be connected in a watertight state by the action of the seal ring 39x.
The receptacle socket 35 is configured such that the lower end straight pipe portion 225 of the drainage pipe joint 20 can be inserted to the center position in the axial direction of the upward expanding portion 38. Here, assuming that the maximum dimension at which the lower end straight pipe portion 225 of the drain pipe joint 20 can be inserted into the receiving socket socket 35, that is, the maximum retractable dimension of the receiving socket socket 35 is Nmax, Nmax = about 130 mm. Further, assuming that the minimum required insertion depth dimension of the receiving socket 35 is Nmin, Nmin = 50 mm is set. Normally, a value that allows a margin of about 20 mm with respect to the required minimum penetration depth dimension Nmin is set as the standard penetration depth dimension Nst (Nst = 70 mm) of the socket socket 35.

<About the update of the drainage facility 10>
A procedure for updating the drainage stack 30 of the drainage facility 10 shown in FIG. 3 on a specific floor of the apartment will be described.
In FIG. 3, the distance H0 (floor height H0) between the upper surfaces of the upper and lower concrete slabs CS is equal to the sum of the effective length H1 of the drainage pipe joint 20 and the effective length H2 of the drainage stack 30. . Here, the effective length H1 of the drainage pipe joint 20 is a value obtained by subtracting the penetration depth dimension D (= 50 mm) of the upper receiving port 200 from the entire length of the drainage pipe joint 20. The effective length H2 of the drainage stack 30 is a value obtained by subtracting the standard penetration depth dimension Nst (= 70 mm) of the receiving socket 35 from the total length of the drainage stack 30.
When the drainage stack 30 is updated, first, the drainage stack 30 is moved upward. As described above, the lower end straight pipe portion 225 of the drainage pipe joint 20 on the upper floor is inserted into the receiving socket 35 of the drainage stack 30 as shown in FIG. 5 by the standard penetration depth dimension Nst (= 70 mm). Has been. Therefore, the drainage stack 30 can be moved upward from the position shown in FIG. 5 by a dimension K (maximum swallowable dimension Nmax (130 mm) −standard swallowing depth dimension Nst (70 mm) = 60 mm).
Here, since the insertion port 31s at the lower end of the drainage stack 30 is inserted into the upper receiving port 200 of the drainage pipe joint 20 on the lower floor with a penetration depth D (= 50 mm), the drainage stack 30 is dimensioned. When moved upward by K (= 60 mm), the insertion port 31 s of the drainage stack 30 is pulled out from the upper receiving port 200 of the drainage pipe joint 20. The tip (lower end) of the insertion port 31s of the drainage stack 30 is separated from the upper surface of the upper receiving port 200 of the drainage pipe joint 20 by 10 mm.

Next, as shown in FIG. 4, the drainage stack 30 is tilted, and the insertion port 31 s of the drainage stack 30 is moved laterally with respect to the upper receiving port part 200 of the drainage pipe joint 20 on the lower floor. As described above, since the tip (lower end) of the insertion port 31s of the drainage stack 30 is separated from the upper surface of the upper receiving port 200 of the drainage pipe joint 20 by 10mm, when the drainage stack 30 is tilted, the insertion port The tip (lower end) of 31 s does not come into contact with the upper surface of the upper receiving opening 200. Here, when the drainage stack 30 is tilted, the distance between both ends 31s and 200 is set such that the tip (lower end) of the insertion port 31s of the drainage stack 30 does not contact the upper surface of the upper receiving port 200. (= 10mm).
Next, by moving the drainage stack 30 downward in an inclined state, the lower end straight pipe portion 225 of the drainage pipe joint 20 on the upper floor can be pulled out from the receiving socket 35 of the drainage stack 30. That is, the old drainage stack 30 piped between the upper and lower drainage pipe joints 20 can be removed by exchange.
When a new drainage stack 30 is piped between the drainage pipe joints 20 on the upper floor and the lower floor, the new drainage stack 30 is manufactured with the same dimensions as the old drainage stack 30 and is the reverse of the above procedure. In this procedure, piping is performed between the drainage pipe joints 20 on the upper floor and the lower floor. That is, a new drainage stack 30 can be piped between the upper and lower drainage pipe joints 20 by exchange.

<Advantages of the drainage facility 10 according to this embodiment>
According to the drainage facility 10 according to this embodiment, the penetration depth dimension D (= 50 mm) of the upper receiving opening 200 of the drainage pipe joint 20 on the lower floor is a predetermined dimension (K) that allows the drainage stack 30 to move upward. = 60 mm). Therefore, the drainage standpipe 30 is moved upward by a predetermined dimension (K = 60 mm) between the drainage pipe joint 20 on the upper floor and the drainage pipe joint 20 on the lower floor. 30 insertion ports 31 s can be pulled out from the upper receiving port portion 200 of the drainage pipe joint 20 on the lower floor. Furthermore, by tilting the drainage stack 30 from this state, the insertion port 31s at the lower end is moved in the lateral direction, and the drainage stack 30 is pulled obliquely downward, so that the socket socket 35 of the drainage stack 30 is lifted from the upper floor. The lower end straight pipe portion 225 of the drainage pipe joint 20 can be pulled out.
Moreover, the drainage stack 30 removed from the drainage pipe joints 20 on the upper floor and the lower floor can be restored in the reverse procedure. That is, the drainage stack 30 can be updated by so-called exchange between the drainage pipe joint 20 on the upper floor and the drainage pipe joint 20 on the lower floor.
Therefore, it is not necessary to cut the drainage stack 30 when removing the old drainage stack 30. In addition, a single drainage stack 30 having the same length as the old drainage stack 30 can be used as the new drainage stack 30. For this reason, the drainage stack 30 can be updated at low cost.
Further, the drainage pipe joint 20 is composed of an upper receptacle part 200 and a pipe joint body part 21, and the upper receptacle part 200 and the pipe joint body part 21 are configured to be connectable and disengageable. For this reason, even if it is a case where a drainage standpipe cannot be renewed by exchange in an old drainage facility, if the old drainage pipe joint is a model which can be divided up and down, the top receiving mouth part 200 of the present invention will be used as By connecting to the main body of the pipe joint, the old drainage facility can be changed into a drainage facility that can update the exchange of the drainage stack.

Further, the upper receiving port portion 200 of the drain pipe joint 20 includes a cylindrical receiving port body portion 210 and a sealing material 230 accommodated coaxially in the receiving port body portion 210. A ring-shaped seal groove 212 extending in the circumferential direction is formed, and a seal material receiving portion 216 is formed in an inner flange shape at the lower portion of the inner peripheral surface. The sealing material 230 includes a cylindrical portion 231, a seal body portion 233 having a circular cross section formed at the upper end of the cylindrical portion 231, and a standpipe receiving portion 235 formed in an inner flange shape at the lower end of the cylindrical portion 231. The seal main body 233 is accommodated in the seal groove 212 of the receptacle body 210, and the standpipe receptacle 235 is supported from below by the seal material receptacle 216 of the receptacle body 210.
For this reason, the drainage stack 30 can be inserted into the upper receiving port 200 of the drainage pipe joint 20 until the tip (lower end) of the insertion port 31 s of the drainage stack 30 abuts the vertical tube receiving part 235. Therefore, the insertion dimension of the insertion port 31s of the drainage stack 30 can be always constant.
Further, since the inner wall surface of the receiving body portion 210 of the upper receiving port portion 200 is provided with a taper that expands downward, the insertion port 31s of the drainage stack 30 is inserted and connected to the upper receiving port portion 200. In this state, the inclination angle of the drainage stack 30 can be made relatively large, which is effective against shaking such as an earthquake.
Moreover, since the penetration depth dimension D of the drainage stack 30 in the upper receptacle part 200 is set to 50 mm, it is compared with, for example, an upper receptacle commonly used in the past, for example, a penetration depth dimension of 65 mm. It becomes easy to update the drainage stack 30 by exchange.

<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 drainage facility 10 according to the present embodiment, an example in which the drainage stack 30 is configured from the receiving socket 35 and the straight pipe 31 has been shown, but a method of forming the receiving port portion by expanding the front end portion of the straight pipe Is also possible. Alternatively, it may be made of a resin, or a separate socket socket in which it is covered with a refractory material or the like, joined to the upper end portion of the standing pipe and integrated.
Moreover, although the example which uses a hard PVC lining steel pipe for the drainage stack 30 was shown, a cast iron pipe can also be used and a resin pipe can also be used. It is also possible to use a fireproof double-layer tube.
Moreover, although the upper receptacle part which has a function of only a receptacle was illustrated as the upper receptacle part 200 of the drain pipe joint 20, as shown to FIG. 6 (A), the lower side of the upper receptacle U (under the sealing material receptacle part 216) It is also possible to use an upper receiving port portion 240 provided with a receiving port body portion 241 in which a speed reduction guide 243 is formed on the side). Thereby, it becomes possible to decelerate while rotating the drainage flowing down at the position of the upper receptacle 240, and the drainage performance of the drainage pipe joint 20 in the super high-rise apartment house is improved.
Moreover, although the example which makes the drain pipe joint 20 a vertical division type was shown, as shown to FIG. 6 (B), it is also possible to integrate the upper receptacle part 200 and the pipe joint main-body part 21. FIG. Furthermore, although the drain pipe joint 20 provided with three side branch pipe receiving ports 25 in the pipe joint main body portion 21 is illustrated, the number of side branch pipe receiving ports 25 can be changed as appropriate. Moreover, although the example provided with the cleaning port 26 with a lid in the pipe joint main-body part 21 was shown, the said cleaning port 26 can also be abbreviate | omitted.
Moreover, the penetration depth dimension of the upper receptacle part 200 of the drainage pipe joint 20 and the penetration depth dimension of the receptacle socket 35 of the drainage stack 30 can be appropriately changed.
Furthermore, it is also possible to use the drain pipe joint 20 and the drainage stack 30 according to the present embodiment at the time of new construction.
Moreover, in this embodiment, the example which inserts and connects the lower end straight pipe part 225 of the drainage pipe joint 20 of the upper floor to the receptacle socket 35 of the single drainage stack 30 was shown. However, the drainage stack 30 is composed of an upper drainage stack (not shown) connected to a flange-like lower end connection portion of the drainage pipe joint on the upper floor, and a lower drainage stack (not shown) provided with a socket socket. It is also possible to do. In this case, the lower end insertion port of the upper drainage stack is inserted and connected to the receiving socket of the lower drainage stack. At this time, in order to make the penetration depth dimension of the lower end insertion port of the upper drainage stack with respect to the receptacle socket of the lower drainage stack, a regulation band or the like is used around the lower end insertion port. Do not use a band.

It is a partially broken side view of the drainage pipe joint used in the drainage facility according to Embodiment 1 of the present invention. It is a longitudinal cross-sectional view of the upper receiving port part of a drainage pipe joint. It is a side view of the drainage equipment concerning this embodiment. It is a side view showing a mode that the drainage stack of a drainage facility is updated. It is a longitudinal cross-sectional view showing the receptacle socket of a drainage stack. It is a partially broken side view (Drawing A, B) of a drainage pipe joint used with drainage facilities concerning a modification. It is a side view showing the conventional drainage equipment. It is a side view showing the removal method of the drainage stack in the conventional drainage equipment.

Explanation of symbols

20 .... Drainage pipe joint 21 ...... Fitting body part 30 ... Drainage stack 31s ... Inlet 31 ... Straight pipe 35 ... Receptor socket (Fitting receptacle)
200: upper receiving part 210 ... receiving body part 211 ... body part 212 ... sealing groove 216 ... sealing material receiving part 216
230... Seal material 231... Cylindrical portion 233... Seal body portion 235... Stand pipe receiving portion CS ... Concrete slab D. Dimensions (= 50mm)

Claims (6)

Drainage piped between the drainage pipe joint installed on each floor through the concrete slab separating the upper and lower floors of the apartment, and the drainage pipe joint on the upper floor and the drainage pipe joint on the lower floor A drainage facility comprising a standpipe,
The drainage stack includes a joint receiving port formed at the upper end, and an insertion port formed at the lower end.
The drainage pipe joint is composed of an upper receptacle part and a pipe joint body part, and the upper receptacle part and the pipe joint body part are configured to be connectable and disengageable.
The lower end straight pipe portion formed in the pipe joint main body portion of the drainage pipe joint on the upper floor is inserted and connected to the joint receptacle of the drainage stack, and the outlet of the drainage pipe is connected to the drainage pipe joint of the lower floor. It is configured to be inserted and connected to the upper receiving port,
The fitting depth of the joint receptacle can be moved further upward by a predetermined dimension from the state where the lower end straight pipe portion of the drainage pipe joint on the upper floor is inserted and connected to the joint receptacle. Is set to
The drainage facility characterized in that the depth of penetration of the upper receiving port in the drainage pipe joint on the lower floor is set to a value smaller than the predetermined dimension. A drainage facility according to claim 1,
The upper receiving portion includes a cylindrical receiving body and a sealing material accommodated coaxially in the receiving body.
A ring-shaped seal groove extending in the circumferential direction is formed in the upper part of the inner peripheral surface of the receptacle body, and a seal material receiving part is formed in an inner flange shape below the seal groove,
The seal material includes a cylindrical part, a seal body having a circular cross section formed at the upper end of the cylindrical part, and a vertical tube receiving part formed in an inner flange shape at the lower end of the cylindrical part, and the seal body The drainage system is configured such that the portion is housed in a seal groove of the receiving body, and the stand receiving portion is supported from below by the sealing material receiving portion of the receiving body. A drainage facility according to claim 2,
A drainage facility characterized in that an inner wall surface of the receiving body is provided with a taper that expands downward. A drainage facility according to any one of claims 1 to 3,
A drainage facility characterized in that the depth of the drainage standpipe in the upper receptacle is set between 35 mm and 55 mm. A drainage facility according to any one of claims 1 to 3,
The drainage facility characterized in that the receiving body of the upper receiving port is provided with a speed reduction guide that decelerates the swirling water that flows down to the lower side of the sealing material receiving unit. Drainage piped between the drainage pipe joint installed on each floor through the concrete slab separating the upper and lower floors of the apartment, and the drainage pipe joint on the upper floor and the drainage pipe joint on the lower floor A drainage facility comprising a standpipe,
The drainage stack includes a joint receiving port formed at the upper end, and an insertion port formed at the lower end.
The lower end straight pipe portion of the drainage pipe joint on the upper floor is inserted and connected to the joint receiving port of the drainage stack, and the insertion port of the drainage stack is inserted and connected to the upper receptacle part of the drainage pipe joint on the lower floor. Configuration,
The fitting depth of the joint receptacle can be moved further upward by a predetermined dimension from the state where the lower end straight pipe portion of the drainage pipe joint on the upper floor is inserted and connected to the joint receptacle. Is set to
The drainage facility characterized in that the depth of penetration of the upper receiving port in the drainage pipe joint on the lower floor is set to a value smaller than the predetermined dimension.

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