JP6752573B2 - Drainage pipe fitting - Google Patents

Description

The present invention relates to a drainage pipe joint for connecting a drainage pipe.

Patent Document 1 describes the above-mentioned technique for drainage pipe joints. The drainage pipe joint described in Patent Document 1 is a cast iron joint installed on each floor through a floor slab that separates the upper floor and the lower floor of a building, and has excellent durability. However, cast iron drainage pipe joints are heavy and take time to handle during construction. There is also a problem that drainage noise reverberates. For this reason, in recent years, resin drainage pipe joints, particularly hard vinyl chloride drainage pipe joints, have been preferably used instead of cast iron drainage pipe joints.

Japanese Unexamined Patent Publication No. 2008-215307

The drainage pipe joint is generally provided with a swivel blade or the like for swirling the flowing drainage along the inner wall surface of the joint in order to improve the drainage performance. Since the drainage flowing down always collides with the swirl vanes and the like, a large load is applied as compared with other parts of the drainage pipe joint. Further, when cleaning the drainage equipment, the cleaning nozzle, the cleaning hose, or the like can easily hit the swivel blade or the like of the drainage pipe joint. Therefore, if the drainage pipe joint is molded with the same resin as a whole, the swivel blade or the like fatigues faster than other parts, and the drainage performance of the drainage pipe joint deteriorates. Further, if the wall thickness dimension of the swirling blade or the like is increased more than other parts in order to improve the durability of the swirling blade or the like, the molding accuracy of the swirling blade or the like is lowered and it becomes difficult to improve the drainage performance.

The present invention has been made to solve the above problems, and a technical problem of the present invention is to mold a swivel blade or the like (drainage receiving portion) with a resin having a strength higher than that of other portions. This is to improve the durability of drainage pipe joints.

The above-mentioned problems are solved by the invention of each claim. The invention of claim 1 is a drainage pipe joint for connecting a drainage pipe, and has a body portion composed of a plurality of parts and a drainage receiving portion formed in a portion of the body portion where drainage flowing down collides. The part that constitutes the drainage receiving portion and the part of the body that is separate from the drainage receiving portion are formed of rigid vinyl chloride , and are integrated with the part that constitutes the drainage receiving portion or the drainage receiving portion. parts of the barrel in the molding, impact resistance is formed by a high impact resistant rigid vinyl chloride than the rigid vinyl chloride.

According to the present invention, the parts constituting the drainage receiving portion where the flowing drainage collides, or the parts of the body portion integrally formed with the drainage receiving portion are impact-resistant hard having higher impact resistance than rigid vinyl chloride. It is made of vinyl chloride . Therefore, the impact resistance of the drainage receiving portion where the flowing drainage collides is higher than the impact resistance of other portions in the drainage pipe joint. Therefore, a problem that the drainage receiving portion is damaged earlier than other portions is less likely to occur. As a result, the durability of the drainage pipe joint is improved as compared with the case where the drainage receiving portion is formed of the same rigid vinyl chloride as the body portion.

According to the invention described in claim 2, it is installed on each floor through a floor slab that separates the upper floor and the lower floor of the building, and connects the drainage stand pipe on the upper floor and the drainage stand pipe on the lower floor. The body portion is provided with an upper receiving port to which the drainage stand pipe on the upper floor is connected and a lower end connecting portion to which the drainage stand pipe on the lower floor is connected, and the drainage receiving portion is inside the body portion. It is configured so that the flow direction of the drainage can be changed to a predetermined direction when the drainage flowing down collides with the drainage.

According to the invention of claim 3, the body part includes an upper body part having an upper receiving port and a lower body part having a lower end connecting part, and the drainage receiving part drains water. The upper body part having a swivel vane to be swiveled, formed in the lower part of the upper body part, and positioned inside the lower body part, and the upper body part having the drainage receiving part has the impact resistance. It is molded from hard vinyl chloride , and the lower body part is molded from the hard vinyl chloride . Therefore, the number of parts of the drainage pipe joint can be suppressed to a small number.

According to the invention of claim 4, the body part includes an upper body part having an upper receiving port and a lower body part having a lower end connecting part, and the drainage receiving part is the lower body. It is a part provided with a tubular portion positioned inside the portion part and a swivel blade provided in the tubular portion to swirl the drainage flowing down, and the part constituting the drainage receiving portion is said to have resistance. It is molded from impact-resistant hard vinyl chloride , and the upper body part and the lower body part are individually molded from the hard vinyl chloride . Therefore, the amount of impact-resistant rigid vinyl chloride having high impact resistance can be minimized.

According to the present invention, the durability of a drainage pipe joint made of rigid vinyl chloride is improved.

It is a side view of the drainage facility using the drainage pipe joint which concerns on Embodiment 1 of this invention. It is a vertical sectional view of the drainage pipe joint which concerns on Embodiment 1 of this invention. It is a vertical cross-sectional view of the upper body part of the drainage pipe joint. It is a top view of the upper body part. It is a vertical cross-sectional view of the part for the lower body part of the drainage pipe joint. It is a vertical cross-sectional view which shows the modification example of the drainage pipe joint which concerns on Embodiment 1 of this invention. It is a vertical sectional view of the drainage receiving part of the drainage pipe joint.

[Embodiment 1]
Hereinafter, the drainage pipe joint according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 7. The drainage pipe joint 20 according to the present embodiment is a drainage pipe joint used for drainage equipment in a condominium or the like, an office building or the like (apartment housing).

<Overview of drainage facilities>
As shown in FIG. 1, the drainage facility connects the drainage pipe joint 20 installed on each floor through the floor slab CS that separates the upper floor and the lower floor of the apartment, and the drainage pipe joint 20 on each floor. It is composed of a drainage stand pipe 70 to be connected and a drainage horizontal branch pipe (not shown) which is piped on the floor of each floor and connected to the drainage pipe joint 20 of each floor.

<Overview of drainage pipe joint 20>
The drainage pipe joint 20 is a joint that joins the drainage guided by the drainage stand pipe 70 on the upper floor and the drainage horizontal branch pipe (not shown) and flows into the drainage stand pipe 70 on the lower floor. The drainage pipe joint 20 is a resin joint, and is composed of an upper body part 30 and a lower body part 40 as shown in the vertical sectional view of FIG. Then, the upper body part 30 and the lower body part 40 are combined from above and below and adhered to each other to form the drainage pipe joint 20.

<About upper torso parts 30>
As shown in FIGS. 2 and 3, the upper body portion 30 is a part constituting the upper center of the body portion of the drainage pipe joint 20, and the upper receiving port 32, the tubular portion 33, and the tubular portion 33 are arranged in this order from the top. It is provided with a drainage guide unit 34. As shown in FIG. 1, the upper receiving port 32 is a portion where the lower end insertion port 71s of the drainage stand pipe 70 is inserted and connected in a watertight state. As shown in FIG. 2, the upper receiving port 32 includes a cylindrical portion 32e formed in a substantially cylindrical shape and an inner flange portion 32f provided at a boundary position between the cylindrical portion 32e and the cylindrical portion 33 at the lower end position of the cylindrical portion 32e. It has. A rubber tubular sealing material 26 is housed in the cylindrical portion 32e of the upper receiving port 32. Further, the cylindrical portion 32e of the upper receiving port 32 is covered with a sealing material holding ring 24 that presses the upper end surface of the tubular sealing material 26 in a state where the tubular sealing material 26 is housed, and is fixed by adhesion or the like. ..

The tubular portion 33 provided on the lower side of the upper receiving port 32 is formed in a substantially cylindrical shape like the upper receiving port 32. As shown in FIG. 3, a plurality of lateral branch pipe receiving ports 35 into which drainage lateral branch pipes (not shown) are inserted and connected are formed laterally at intervals of 90 ° on the upper outer peripheral surface of the tubular portion 33. Further, on the inner wall surface of the tubular portion 33, a backflow prevention wall 35g extending in the vertical direction is formed on both sides of the opening 35h of the lateral branch pipe receiving port 35. The backflow prevention wall 35g is a wall for preventing the drainage flowing down from the drainage stand pipe 70 from flowing back to the opening 35h side of the lateral branch pipe receiving port 35, and is formed in a chevron-shaped cross section. Further, on the outer peripheral surface of the tubular portion 33, ring flange-shaped stopper portions 33s are formed on the lower side of the plurality of lateral branch pipe receiving ports 35. As shown in FIG. 2, the stopper portion 33s is a stopper that the upper end surface of the lower body portion part 40 comes into contact with from below when the upper body portion part 30 and the lower body portion part 40 are assembled. That is, in the upper body portion 30, the tubular portion 33 below the stopper portion 33s is housed in the lower body portion part 40. Then, a portion of the upper body portion 30 above the stopper portion 33s is arranged on the floor slab CS as shown in FIG.

As shown in FIG. 3, a drainage guide portion 34 is provided at the lower end position of the tubular portion 33. The drainage guide portion 34 is a portion for swirling the drainage flowing down along the inner wall surface of the tubular portion 33, and includes a first swivel blade 34a and a second swivel blade 34b. As shown in the plan view of FIG. 4, the first swivel blade 34a and the second swivel blade 34b are each formed in a flat semicircular vane shape, and are formed inward in the radial direction from the inner wall surface of the tubular portion 33. It is overhanging and inclined in the circumferential direction. As a result, when the drainage flowing down along the inner wall surface of the tubular portion 33 collides with the first swivel vane 34a and the second swirl vane 34b, the flow velocity of the drainage is decelerated and the drainage swirls and flows down. .. An upper receptacle 32 of the Uedo section Parts 30, a cylindrical portion 33, and the drain guide part 34, that is composed by a high impact resistant rigid vinyl chloride impact resistance than conventional hard vinyl chloride ..

<About the lower torso part 40>
As shown in FIGS. 2 and 5, the lower body portion 40 is a part that constitutes the lower center side of the body portion of the drainage pipe joint 20, and is a large-diameter cylindrical portion 41 and a tapered portion 43 in order from the top. And a small-diameter cylindrical portion 45. The large-diameter cylindrical portion 41 is a portion for accommodating the tubular portion 33 of the upper body portion 30, and is set so that the inner diameter dimension thereof is substantially equal to the outer diameter dimension of the tubular portion 33. Further, the axial length dimension of the large-diameter cylindrical portion 41 is set to a value substantially equal to the axial length dimension from the stopper portion 33s of the tubular portion 33 to the upper end of the drainage guide portion 34. The tapered portion 43 is a portion in which the pipe body is gradually narrowed so that the lower side has a smaller diameter without changing the wall thickness dimension, and is configured to accommodate the drainage guide portion 34 of the upper body part 30. There is.

As shown in FIG. 1, the small-diameter cylindrical portion 45 is a lower end connecting portion into which the upper end insertion port 71u of the drainage stand pipe 70 on the lower floor is inserted and connected so as to project by a certain dimension from the ceiling surface of the floor slab CS. It is configured. As shown in FIG. 2 and the like, a stopper portion 45s with which the upper end surface of the upper end insertion port 71u of the drainage stand pipe 70 abuts is formed on the inside of the small diameter cylindrical portion 45 on an extension line of the tapered portion 43. Then, as shown in FIG. 5, around the stopper portion 45s, a thin portion 45k that suppresses an increase in the wall thickness dimension is formed in the stopper portion 45s and its vicinity. Parts for the lower body portion 40, that is composed by the usual hard vinyl chloride. Contact name around the drainage pipe joint 20, as shown in FIG. 1, the covering material 50 for reducing the waste water noises is mounted.

<Advantages of drainage pipe joint 20 according to this embodiment>
According to the drainage pipe joint 20 according to the present embodiment, the upper body part 30 formed integrally with the drainage guide portion 34 (drainage receiving portion) with which the flowing drainage collides is a normal hard vinyl chloride (first). It is formed of impact-resistant hard vinyl chloride (second hard vinyl chloride), which has a higher strength than hard vinyl chloride). Therefore, the strength of the drainage guide portion 34 with which the flowing drainage collides is higher than the strength of other portions of the drainage pipe joint 20. Therefore, a problem that the drainage guide portion 34 is damaged earlier than other portions is less likely to occur. As a result, the durability of the drainage pipe joint 20 is improved as compared with the case where the drainage guide portion 34 is formed of the same ordinary rigid vinyl chloride as the body portion. Further, since the drainage guide portion 34 is provided in the upper body portion portion 30 forming the central upper side of the body portion of the drainage pipe joint 20, the number of parts of the drainage pipe joint 20 can be suppressed to a small number.

<Change example>
Here, the present invention is not limited to the above-described embodiment, and changes can be made without departing from the gist of the present invention. For example, in the present embodiment, an example is shown in which the drainage guide portion 34 is provided on the upper body portion part 30 constituting the central upper side of the body portion of the drainage pipe joint 20. However, as shown in FIG. 6, the drainage guide part 60 is molded separately from the upper body part 30, and the drainage guide part 60 is mounted inside the large-diameter cylindrical part 41 or the like of the lower body part 40. It is also possible. As shown in FIG. 7, the drainage guide part 60 is provided with a cylindrical portion 62 bonded to the inside of the large-diameter cylindrical portion 41 or the like of the lower body portion 40 and the center thereof at the lower end position of the cylindrical portion 62. It is preferably composed of the first swivel blade 64a and the second swivel blade 64b. Then, only the drainage guide part 60 is molded with impact-resistant hard vinyl chloride, and the upper body part 30 and the lower body part 40 are molded with ordinary hard vinyl chloride to form impact-resistant hard vinyl chloride. The amount of water used can be minimized. Further, in the present embodiment, an example of applying the present invention to the drain pipe joint 20 installed on each floor through the floor slab CS that separates the upper floor and the lower floor of the apartment house is shown. However, it is also possible to apply the present invention to a drainage leg joint (not shown) connecting the lower end of the drainage stand pipe 70 of an apartment house and a drainage horizontal main pipe (not shown).

20 ... Drainage pipe joint 30 ... Upper body parts (body parts)
32 ... Upper socket 33 ... Cylindrical part 34 ... Drainage guide part (drainage receiving part)
34a ... Swivel blade 34b ... Swivel blade 40 ... Lower body parts (body parts)
41 ... Large diameter cylindrical part 43 ... Tapered part 45 ... Small diameter cylindrical part (lower end connection part)
60 ・ ・ ・ Drainage guide parts

Claims (4)

A drainage pipe joint that connects drainage pipes
The torso, which consists of multiple parts,
It has a drainage receiving part formed at a portion where the drainage flowing down in the body collides.
The parts constituting the drainage receiving portion and the parts of the body portion that are separate from the drainage receiving portion are formed of hard vinyl chloride .
The part constituting the drain receiver portion or part of the barrel which is molded integrally with the drain receptacle, the wastewater impact resistance than the rigid vinyl chloride are formed by a high impact resistant rigid vinyl chloride Pipe fitting. The drainage pipe joint according to claim 1.
It is installed on each floor through the floor slab that separates the upper and lower floors of the building, and is a joint that connects the drainage pipe on the upper floor and the drainage pipe on the lower floor.
The body portion is provided with an upper receiving port to which the drainage stand pipe on the upper floor is connected and a lower end connection portion to which the drainage stand pipe on the lower floor is connected.
The drainage receiving portion is a drainage pipe joint provided in the body portion so that the flow direction of the drainage can be changed to a predetermined direction when the flowing drainage collides with each other. The drainage pipe joint according to claim 2.
The body part includes an upper body part having the upper receiving port and a lower body part having the lower end connecting part.
The drainage receiving portion includes swivel blades for swiveling drainage, is formed in the lower part of the upper body part, and is positioned inside the lower body part.
The upper body part having the drainage receiving portion is molded from the impact-resistant rigid vinyl chloride , and the lower body part is a drainage pipe joint formed from the hard vinyl chloride . The drainage pipe joint according to claim 2.
The body part includes an upper body part having the upper receiving port and a lower body part having the lower end connecting part.
The drainage receiving portion is a part including a tubular portion positioned inside the lower body portion part and a swirling blade provided in the tubular portion to swirl the flowing drainage.
The parts constituting the drainage receiving portion are molded of the impact-resistant hard vinyl chloride , and the upper body part and the lower body part are individually molded of the hard vinyl chloride . Drainage pipe joint.

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