JP4753122B2 - Swirling pipe fitting - Google Patents

Description

  The present invention relates to a swirl type pipe joint that is preferably used for connecting a drain pipe under a floor and a foundation penetrating drain pipe penetrating a foundation of a house.

  Conventionally, drainage pipes from water facilities such as toilets, washstands, bathrooms, and kitchens in the home are piped under the floor of the house, and the drainage pipe under the floor penetrates the foundation of the house and is buried outdoors. A piping structure for connecting to a pipe is known (Patent Document 1). In such a piping structure, there is a large drop between the drainage pipe penetrating the foundation of the house (hereinafter referred to as the foundation penetration drainage pipe) and the connection port of the drainage basin, so that the vertical drainage is connected to the foundation penetration drainage pipe through a 90 ° elbow joint. In addition to connecting the pipe, a horizontal drain pipe is connected to the lower end of the vertical drain pipe via a 90 ° elbow joint, and this horizontal drain pipe is connected to the connection port of the drain. Although not shown, in such a pipe structure, in addition to the above two 90 ° elbow joints, a substantially horizontal pipe below the floor is turned downward in the foundation through drain pipe so It is necessary to connect a 90 ° elbow joint.

  However, in the above piping structure, if a large amount of water is flowed at once, for example, flushing toilets and toilets at the same time, the portion bent by 90 ° at the elbow joint is blocked by drainage and the ventilation in the drainage pipe is blocked. As a result, there is a problem that negative pressure is generated in the drain pipe under the floor and the sealing water in the trap of the toilet or the washstand is destroyed.

  Therefore, the present applicant arranges a joint for a basic through pipe that generates a swirl flow inside the foundation of the building, connects the drain pipe under the floor to the upper connection port of the joint, and connects the basic through drain pipe to the joint. A basic through-pipe structure connected to the lower connection port of the bottom, wherein the joint has a bottomed tubular joint body and a curvature radius formed so as to bend and gradually bulge from the upper peripheral wall of the joint body. A curved inflow path larger than the radius of the upper peripheral wall, an upper connection port formed at the tip of the curved inflow path, and a displacement from one side of the joint body to the swirl flow direction along the tangent line from the lower peripheral wall A basic through-pipe structure characterized in that it is provided with a projecting lower connection port (Patent Document 2).

This foundation through-pipe structure has an air passage in the center line of the joint for foundation through-pipe that generates a swirling flow during drainage, and ensures ventilation between the under-floor drain pipe and the foundation through-drain pipe. There is an excellent effect that the negative pressure is not generated in the pipe and the sealing water breakage of the trap of the toilet or the washstand can be prevented. However, the joint for the basic through pipe that generates the swirl flow is a large joint with a large height, specifically, an upper cylindrical body having a curved inflow passage and an upper connection port at the tip thereof, and a lower connection port. A bottomed cylindrical body with a bottom, and an intermediate cylindrical body having both ends connected to the upper cylindrical body and the lower cylindrical body. The upper and lower cylinders are connected to both ends of the intermediate cylinder whose height is adjusted by cutting so that the vertical gap between the lower cylinder and the lower connection port matches the drop between the underfloor drainage pipe and the foundation through drainage pipe. This assembly work is troublesome because it is necessary to assemble it by connecting to it.
JP 2003-96857 A JP-A-2005-290676

  The present invention has been made under the above circumstances, and the problem to be solved is smaller than the above-mentioned joint for basic through-piping, does not need to be assembled at the construction site, and flows from the inflow side connection port. A swirling flow type pipe joint that can swirl drainage substantially once to form a swirling flow that quickly flows out from the outlet on the bottom wall and prevents negative pressure in the underfloor drainage pipe and the sealing failure of the trap. Is to provide.

  In order to solve the above problems, a swirl type pipe joint according to the present invention includes an upper opening formed in an annular shape, a bottom wall, a downward outlet port provided on the bottom wall, and a termination portion. A substantially spiral spiral side wall leading to the outflow side connection port, a vertical wall connecting the terminal end part and the start end part of the side wall, and deviating to one side and projecting in parallel with the vertical wall from the start end side of the side wall A swirl type pipe joint integrally formed of a synthetic resin, having an inflow side connection port, and a spiral flow path formed by a side wall and a bottom wall, and the end portion of the side wall when viewed in plan This direction is not a direction circumscribing the circumference of the outflow side connection port but a direction that intersects the circumference at an acute angle.

In the swirl type pipe joint according to the present invention, the end of the side wall reaches the outflow side connection port while gradually decreasing the radius of curvature of the side wall, and gradually becomes narrower as the width of the spiral channel approaches the channel end. It is preferable that And, the outflow side connection port is provided on the bottom wall so as to have an eccentric positional relationship with respect to the upper part of the opening formed in an annular shape, and the bottom wall serving as the bottom surface of the spiral flow path is substantially horizontal. It is preferable that it is formed, that the height of the side wall and the vertical wall is higher than the height of the inflow side connection port, and that the lid is detachably attached to the upper part of the opening.
Is.

  The swirl type pipe joint of the present invention is arranged inside the foundation of a house, and an underfloor drain pipe is connected to the inflow side connection port, and the upstream end of the foundation through drainage pipe is connected to the outflow side connection port of the bottom wall. The parts are connected via a large bend pipe or the like. When drainage flows from the underfloor drain pipe, it flows through a spiral channel formed by a substantially spiral side wall and a bottom wall, and makes a swirl flow around the outflow side connection port, resulting in a swirl flow. Then, it flows into the foundation through drainage pipe from the outflow side connection port. When a swirl flow is generated and flows out of the swirl flow pipe joint in this way, an air core is formed at the center of the swirl flow, and the swirl flow pipe joint and the basic through drainage pipe are not easily blocked. It becomes difficult to generate a negative pressure in the drain pipe, and it becomes possible to prevent the trap seal from being destroyed. In particular, as in the swirl type pipe joint of the present invention, the direction of the end portion of the spiral side wall when viewed in plan is not acutely intersecting the circumference of the outflow side connection port but at an acute angle. The drainage water that has swirled through the spiral flow path and then swirled substantially once is smoothly guided to the inside of the outflow side connection port by the end portion of the side wall, and the basic through-drainage water does not cause a large disturbance in the swirling flow. Since the water is quickly drained to the pipe, the swirl type pipe joint and the foundation through drain pipe are more difficult to be blocked, and the generation of negative pressure in the underfloor drain pipe and the sealing failure of the trap can be remarkably prevented. .

  Further, since the swirl type pipe joint of the present invention is integrally molded with a synthetic resin, the joint for a basic through pipe of Patent Document 2 comprising an upper cylindrical body, an intermediate cylindrical body, and a bottomed lower cylindrical body. The troublesome work of assembling at the construction site is unnecessary, and the upstream end portion of the basic through drainage pipe is connected to the downward outlet side connection port provided on the bottom wall like the swirl type pipe joint of the present invention. Are connected through a large bend pipe or the like, the upstream end of the basic through drainage pipe is connected to the lateral outflow side connection port provided in the lower cylindrical body as in the joint for basic through piping of Patent Document 2. The joint has a smaller height and smaller size than those to be connected, and is easy to transport.

  In the swirl type pipe joint according to the present invention, the end of the side wall reaches the outflow side connection port while the radius of curvature of the side wall gradually decreases, and the width of the spiral channel gradually becomes narrower as it approaches the end of the channel. As for the thing, the amount of water that flows down to the outflow side connection port increases as it approaches the end of the spiral channel, and the amount of drainage equal to the inflow amount does not cause a large disturbance in the swirl flow before reaching the end of the channel Since it flows out more rapidly from the outflow side connection port, the swirl type pipe joint and the basic through drainage pipe are less likely to be blocked.

  In addition, when the bottom wall that forms the bottom surface of the spiral channel is formed in a tapered shape, the drained water flows out from the outflow side connection port before swirling along the spiral channel substantially once. However, since a sufficient swirl flow is not generated, the basic through drainage pipe is easily blocked. However, when the bottom wall that forms the bottom surface of the spiral flow path is formed substantially horizontally as in the present invention, the drained water that flows in Most of the water stays in the pipe joint until it makes one round turn along the spiral flow path (buffer effect), and a sufficient swirling flow is generated and flows out from the outflow side connection port. Can be prevented.

  And if the outflow side connection port is provided on the bottom wall so as to have an eccentric positional relationship with respect to the upper part of the opening formed in an annular shape, the width of the spiral flow path, particularly the start end of the spiral flow path If the height of the side wall and the vertical wall is higher than the height of the inflow side connection port, even if a large amount of drainage flows from the inflow side connection port, the upper part of the spiral channel Therefore, there is an advantage that blockage of the swirl type pipe joint can be prevented. In addition, if the lid is detachably attached to the upper part of the opening, the lid can prevent scattering of waste water and mixing of foreign substances, and the inside of the fitting can be easily inspected and cleaned by removing the lid. Easy maintenance.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  1 is a plan view of a swirl type pipe joint according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line XX of FIG. 1, and FIG. 3 is a plan view of the swirl type pipe joint with a lid removed. 4 is a cross-sectional view of a basic through-pipe structure using the swirl type pipe joint, and FIG. 5 is a plan view of the basic through-pipe structure.

  The swirl type pipe joint 3 shown in FIGS. 1 to 3 is integrally formed of a synthetic resin except for the lid 3c, and an upper opening portion 3d thereof is formed in an annular shape. And, as shown in FIG. 3, the lower side wall 3e of the annular opening upper portion 3d has a radius of curvature that gradually decreases from the middle, and its end portion 3h is a downward outflow side provided on the bottom wall 3f. It is formed in a substantially spiral shape reaching the connection port 3b, and the end portion 3h and the start end portion 3i of the spiral side wall 3e are connected by a flat vertical wall 3g.

  As shown in FIG. 3, the spiral side wall 3 e has a direction in which the terminal portion 3 h in a plan view intersects the circumference of the outflow side connection port 3 b not at a circumscribing angle but at an acute angle. It has become a direction. The spiral flow path formed by the spiral side wall 3e and the bottom wall 3f becomes gradually narrower as the width approaches the end of the flow path from the middle.

  The inflow side connection port 3a for connecting the underfloor drain pipe is deviated to one side of the swirl type pipe joint 3 and protrudes in parallel with the vertical wall 3g from the lower part on the start end side of the spiral side wall 3e. Yes. And the outflow side connection port 3b which connects the upstream side edge part of a foundation penetration drainage pipe via a large bend pipe etc. is eccentrically located to the opposite side to the inflow side connection port 3a with respect to the annular upper part 3d. As a result, the width of the spiral channel on the start end side is expanded.

  Further, the bottom wall 3f serving as the bottom surface of the spiral flow path is formed substantially horizontally, and the height of the spiral side wall 3e and the vertical wall 3g is higher than the height of the inflow side connection port 3a. 2 and 3, reference numeral 3j denotes a shelf formed inside the upper opening 3d. The shelf 3j is connected to the upper end of the spiral side wall 3e and the upper end of the vertical wall 3g.

  A circular lid 3c made of synthetic resin with a handle is detachably fitted to the annular upper opening 3d through a packing, and is provided opposite to the outer surface of the upper opening 3d. It is fixed by a set of rotatable presser pieces 3k, 3k. The lid 3c is not limited to the fitting type lid as shown in the figure, and various types of lids such as a flange-type lid that can be attached and detached with bolts and nuts are employed. Can do.

  An example of use of the swirl type pipe joint 3 of the present invention as described above will be described. As shown in FIGS. 4 and 5, the pipe joint 3 is unboxed in the soil concrete 2 inside the cloth foundation 1 of the house. Arranged in the portion 2a. An inflow side connection port 3 a protruding from the lower side of the side wall of the pipe joint 3 is connected to an underfloor drain pipe 4 piped on the underfloor soil concrete 2 and provided on the bottom wall of the pipe joint 3. A 90 ° large bend pipe 6 connected to the upstream end portion of the basic through drainage pipe 5 is connected to the downward outflow side connection port 3b. As shown in FIG. 5, drain pipes 4 a and 4 b from water facilities such as a washroom 10 and a toilet 11 are connected to the above-described underfloor drainage pipe 4, and traps (not shown) are connected to the washroom 10 and the toilet 11. ) Is provided. On the other hand, as shown in FIG. 4, a swirl type drainage basin 7 that generates a swirl flow is embedded in the ground outside the fabric foundation 1, and an upper portion formed on the upper side wall of the swirl type drainage basin 7. The downstream end of the foundation through drain pipe 5 is connected to the connection port 7a. As shown in FIG. 5, an upstream outdoor drain pipe 8 a and a downstream outdoor drain pipe 8 b are connected to the lower connection ports 7 b and 7 c formed in the lower part of the swirling flow drainage 7.

  The swirl type drainage trough 7 is provided with a vertical cylindrical body 7d for height adjustment on the upper side and a lower main body 7e, and the upper connection port 7a is provided on the side wall of the vertical cylindrical body 7d. The lid 7h is attached to the lid receiving frame at the upper end of the vertical cylinder. A laterally flowing water passage portion 7k is formed on one side of the main body 7e by bulging the side wall into a substantially semi-cylindrical shape, and the inside opposite the main body 7e and the upstream of the flowing water passage portion 7k. A partition wall (not shown in FIGS. 4 and 5) is formed between the side passage portions. Further, the lower connection ports 7b and 7c are formed at both ends of the flowing water passage portion 7k, and at least above the upstream passage portion of the flowing water passage portion 7k in the upper opening of the main body 7e. A covering semicircular cover plate 7r is attached.

  4 and 5 using the swirl type pipe joint 3 of the present invention, the drainage from the water facilities such as the washroom 10 and the toilet 11 is drained from the drainage pipes 4a and 4b and the underfloor drainage pipe. 4, the drainage flows through a spiral flow path formed by a substantially spiral side wall 3 e and a bottom wall 3 f, and makes a round around the outflow side connection port 3 b. It turns, turns into a swirl flow, flows out from the outflow side connection port 3 b to the large bend pipe 6, and flows into the swirl flow type drainage trough 7 through the foundation through drain pipe 5. Then, the swirl flow drainage basin 7 is swirled again to become a swirl flow, and the partition wall and the cover plate 7r prevent the reverse flow to the outdoor drainage pipe 8a on the upstream side. Discharged.

  When a swirl flow is generated inside the swirl type pipe joint 3 as described above, an air core is formed at the center of the swirl flow, and the drainage smoothly flows out to the large bend pipe 6 and the basic through drainage pipe 5, and the amount of drainage is reduced. At most, the swirling flow pipe joint 3, the large bend pipe 6, and the basic through drain pipe 5 are not easily blocked, so that negative pressure is hardly generated in the underfloor drain pipe 4 and the drain pipes 4 a and 4 b, and the water facilities 10, It is possible to prevent the sealing trap destruction of 11 traps, and further, since the swirling flow is generated inside the swirling flow type drainage basin 7 and the drainage basin 7 is hardly blocked, the effect of preventing the sealing water breakage is improved. To do. In particular, as in this swirl type pipe joint 3, the direction of the terminal end 3h of the spiral side wall 3e when viewed in plan is not a direction circumscribing the circumference of the outflow side connection port 3b, but an acute angle to the circumference. The drainage water that has swirled through the spiral flow path and swirled substantially once is smoothly guided to the inner side of the outflow side connection port 3b by the end portion 3h of the side wall 3e, and the swirling flow is greatly disturbed. Since the water flows out quickly from the outflow side connection port 3b to the large bend pipe 6 and the basic through drainage pipe 5, it becomes more difficult to be blocked and generation of negative pressure in the underfloor drainage pipe 4 and drainage pipes 4a and 4b and water equipment The seal water breakage of the traps 10 and 11 can be remarkably prevented.

  Further, as in the swirl type pipe joint 3, the curvature radius of the side wall 3e gradually decreases from the middle, the end portion 3h of the side wall reaches the outflow side connection port 3b, and the width of the spiral channel is the end of the channel. If it gradually becomes narrower as it approaches the end of the spiral flow path, the amount of water that flows down to the outflow side connection port 3b increases as it approaches the end of the spiral flow path, and the amount of drainage that is equal to the inflow volume swirls before reaching the end of the flow path Since it flows out more rapidly from the outflow side connection port 3b without causing large turbulence in the flow, the swirl type pipe joint 3, the large bend pipe 6 and the basic through drainage pipe 5 are not easily blocked. In addition, when the bottom wall 3f serving as the bottom surface of the spiral flow path is formed substantially horizontally as in the swirl flow type pipe joint 3, most of the drained water that flows in is swirled substantially once along the spiral flow path. The so-called buffer effect of staying inside the pipe joint 3 is exerted until this occurs, and a sufficient swirling flow is generated and flows out from the outflow side connection port 3b, so that the large bend pipe 6 and the basic through drainage pipe 5 are almost surely blocked. Can be prevented. Moreover, when the height of the side wall 3e and the vertical wall 3g is higher than the height of the inflow side connection port 3a as in the swirl type pipe joint 3, even if a large amount of drainage flows from the inflow side connection port 3a, the swirl Since a space is secured in the upper part of the flow path, there is an advantage that the swirling flow pipe joint 3 can be prevented from being blocked. Further, when the lid 3c is detachably attached to the upper part of the opening as in the swirl type pipe joint 3, the lid 3c can prevent scattering of waste water and mixing of foreign matters, and the presser piece 3k can be turned. If the lid 3c is removed, the inside of the pipe joint can be easily inspected and cleaned, so that maintenance is easy.

  In addition, the swirl type pipe joint 3 has an inflow side connection port 3a protruding from the lower part on the start end side of the side wall 3e, and the height of the inflow side connection port 3a and the outflow side connection port 3b provided in the bottom wall 3f. Since the difference is slight, the height of the underfloor drain pipe 4 can be kept low during construction, and construction is possible even when the difference between the floor level under the floor and the outdoor ground level is small. The swirl type pipe joint 3 is a small pipe joint having a small height and formed integrally with a synthetic resin. Therefore, the troublesome work of assembling at the construction site is unnecessary, and transportation and the like are easy.

  FIG. 6 is a sectional view showing another basic through-pipe structure using the swirl type pipe joint of the present invention.

  This basic through-pipe structure is a base through drainage pipe made of a flexible pipe that rises in the 45 ° direction on the upstream side and is embedded in the solid foundation 10 of the house with a sheath tube 9 rising in the 45 ° direction on the upstream side. 50 is inserted into the sheath tube 9, and the upstream end of the foundation through drainage pipe 50 and the outflow side connection port 3 b formed in the bottom wall of the swirl type pipe joint 3 are connected to a 45 ° elbow joint 60. It is connected via. Since the other configuration is the same as that of the basic through-pipe structure shown in FIGS. 4 and 5, the same members are only given the same reference numerals in FIG. It goes without saying that such a basic through-pipe structure also has the same effects as described above by the swirl type pipe joint 3 of the present invention.

It is a top view of the swirling flow type pipe joint concerning one embodiment of the present invention. It is the XX sectional view taken on the line of FIG. It is the top view which removed the cover body of the swirl type pipe joint. It is sectional drawing of the foundation through piping structure using the same swirl type pipe joint. It is a top view of the same basic penetration piping structure. It is sectional drawing of the other foundation through piping structure using the same swirl type pipe joint.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Swirling type pipe joint 3a Inflow side connection port 3b Outflow side connection port 3c Cover 3d Upper part of annular opening 3e Spiral side wall 3f Bottom wall 3g Vertical wall 3h Termination part of spiral side wall 3i Spiral side wall Beginning

Claims (6)

An upper opening formed in an annular shape, a bottom wall, a downward outflow side connection port provided in the bottom wall, a substantially spiral spiral side wall where the end portion reaches the outflow side connection port, and an end of the side wall A spiral wall formed by a side wall and a bottom wall, a vertical wall connecting the head and the start end, an inflow side connection port that is offset to one side and protrudes in parallel with the vertical wall from the start end side of the side wall A swirl type pipe joint integrally formed of synthetic resin,
The swirling flow type characterized in that the direction of the terminal end portion of the side wall in a plan view is not a direction circumscribing the circumference of the outflow side connection port but a direction that intersects the circumference at an acute angle. Pipe fittings.   The end portion of the side wall reaches the outflow side connection port while the radius of curvature of the side wall gradually decreases, and the width of the spiral channel gradually decreases as it approaches the channel end. The swirl type pipe joint according to 1.   The said outflow side connection port is provided in the said bottom wall so that it may become an eccentric positional relationship with respect to the said opening upper part formed in the annular | circular shape, The Claim 1 or Claim 2 characterized by the above-mentioned. Swirl type pipe fitting.   The swirl type pipe joint according to any one of claims 1 to 3, wherein the bottom wall serving as a bottom surface of the spiral flow path is formed substantially horizontally.   The swirl type pipe joint according to any one of claims 1 to 4, wherein a height of the side wall and the vertical wall is higher than a height of the inflow side connection port.   The swirl type pipe joint according to any one of claims 1 to 5, wherein a lid is detachably attached to the upper part of the opening.

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