JP2008115579A - Drain trap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain trap capable of surely preventing from running out of seal water. <P>SOLUTION: A seal water-side outflow portion 30 is constituted integrally with a cylindrical portion 21, and connected to an outflow pipe 32. The outflow pipe 32 is connected to a drain pipe 40 on a downstream side. An outflow portion comprises the seal water-side outflow portion 30 and the outflow pipe 32. In the seal water-side outflow portion 30, an outflow port 30A for drainage is constituted on an upside with respect to a seal-water reservoir 22. The outflow pipe 32 is arranged at an angle θ of inclination so that the side of the seal-water reservoir 22 can be lower than that of the drain pipe 40. The inclination makes wastewater remaining in the outflow pipe 32 after the completion of the drainage returned to the side of the seal-water reservoir 22. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drain trap provided in a drain portion around water such as a bathroom or a basin.

  Conventionally, drainage traps for storing sealed water and blocking odors from drainage pipes are provided in drainage portions around water such as bathrooms and washbasins (see Patent Document 1). Various techniques have been proposed in order to make it difficult to cut the sealing water of the drain trap. It is known that the effect of the sealing water depth and the ratio of the cross-sectional area of the inflow side pipe and the cross-sectional area of the outflow side pipe on the trap seal breakage is large. By making the cross-sectional area of the inflow side pipe of the trap larger than the cross-sectional area of the outflow side pipe, the sealed water may be difficult to cut.

However, the above-described technique is not sufficient as a countermeasure against the seal breakage, and if a tensile force acts on the seal water from the drain pipe side by a strong suction force, the seal breakage may occur. Therefore, there is a demand for a configuration that more reliably prevents the sealing water from running out.
Japanese Utility Model Publication No. 6-20568

  This invention is made | formed in view of the said fact, and it aims at providing the waste_water | drain trap which can prevent a seal water break more reliably.

  The drain trap according to claim 1 of the present invention includes an inflow portion configured with an inflow port through which drainage flows, a sealed water storage unit that stores drainage that flows in through the inflow port, and the sealed water storage unit. Is disposed on the downstream side, and an outlet for allowing the drainage stored in the sealed water storage part to flow out is configured above the sealed water storage part, and the drainage is extended from the outlet and the drainage from the downstream side. And an outflow portion having an outflow path inclined so as to be able to return to the upstream side.

  In the drain trap of the present invention, when draining, drainage flows from the inflow port to the sealed water storage unit, and flows out from the outflow port through the sealed water storage unit. When the drainage proceeds, the drainage usually stops in a state where the sealed water is stored in the sealed water storage unit. However, when the tensile force from the outflow port side is strong, it is conceivable that the sealed water in the sealed water storage part flows out of the outflow port and the sealed water runs out.

  The drain trap of the present invention has an outflow path extended from the outflow port at the outflow portion. The outflow channel is configured to be inclined so that the drainage can return from the downstream side to the upstream side. Therefore, a return force directed toward the sealed water storage portion acts on the drainage in the outflow channel against the tensile force from the drainage pipe side. Thus, when the tensile force from the drain pipe side is larger than the return force, the drainage flows out from the outflow channel to the drain pipe, and when the tensile force from the drain pipe side becomes smaller than the return force, the drainage is It is returned to the sealed water storage part.

  According to the drain trap of the present invention, drainage is stopped when the tensile force from the drain pipe side is weakened before drainage is completed, and drainage remaining in the outflow path is returned to the sealed water storage part. Thereby, sealing water is replenished to a sealing water storage part, and it can prevent that it becomes out of sealing water.

  The drain trap according to claim 2 of the present invention is characterized in that a siphon drainage system is connected downstream of the outflow portion.

  In the siphon drainage system, the drainage trap according to the present invention is preferably used because there is a high possibility that the sealed water flows out of the outlet due to the suction force.

  In the drain trap according to claim 3 of the present invention, the outflow path has a larger diameter than the drain pipe connected downstream, and the drain pipe is connected above the center position of the outflow path. It is characterized by that.

  According to the above configuration, in a siphon drainage system with a strong suction force, a large amount of drainage can be left in the outflow path when drainage does not flow into the drainpipe before drainage is completed, and it is possible to more reliably prevent running out of the sealed water. can do.

  Since this invention was set as the said structure, it can prevent a seal water break more reliably.

  Next, an embodiment of the drain trap of the present invention will be described in detail. In the present embodiment, a drain trap 10 applied to a siphon drainage system will be described. As shown in FIG. 5, the siphon drainage system includes a stand pipe 3 that penetrates each floor, a siphon drain pipe 5 that is led from the water-related equipment 2 on each floor, and a junction joint 7 that joins the siphon drain pipe 5 to the stand pipe 3. And a drainage system in which the siphon drain pipe 5 is joined to the vertical pipe 3 by the junction joint 7 at a position lower than the floor slab S of the floor where the water-circulating device is arranged. Due to the energy of the siphon head Hs, a siphon force directed in the direction of drainage is applied to the fluid in the siphon drain pipe 5 disposed on the slab S in the horizontal direction. When the siphon drainage system is used, the above-described siphon force is more likely to cause the sealed water to be sucked from the drain trap and to flow into the drain pipe than the normal drainage system.

  As shown in FIG. 1, the drain trap 10 of the present embodiment includes a bathtub drain inflow portion 12, a washing ground drain inflow portion 14, and a trap body 20.

  The bathtub drainage inflow portion 12 includes a bathtub receiving member 12A, a connecting member 12B, and a packing 12C. 12 A of bathtub receiving members are made into cyclic | annular form, and the upper part is open | released to the bathtub side. The connecting member 12 </ b> B is a cylindrical tube bent at approximately 90 ° C., the bathtub receiving member 12 </ b> A is fitted on one end side, and the other end side is connected to a connecting portion 23 described later of the trap body 20. The packing 12C is disposed between the bathtub receiving member 12A and the connecting member 12B.

  The trap body 20 has a substantially bottomed cylindrical shape, a sealed water storage portion 22 having a bottom portion on the lower side, and a cylindrical portion 21 having a larger diameter than the sealed water storage portion 22 on the upper side. A cylindrical connecting part 23 is formed on the side surface of the sealed water storage part 22 so as to communicate with the inside of the sealed water storage part 22, and the connecting part 23 is connected to the connection member 12B. On the upper side of the cylindrical portion 21, a female screw portion 25 is formed radially inward from the outer periphery of the cylindrical portion 21. A cylindrical sealed water outflow portion 30 is formed on the side surface of the cylindrical portion 21 so as to communicate with the inside of the cylindrical portion 21.

  The sealed water-side outflow portion 30 is configured integrally with the cylindrical portion 21 and is connected to the outflow pipe 32. The outflow pipe 32 is connected to the drain pipe 40 on the downstream side. The sealed-water-side outflow portion 30 and the outflow pipe 32 constitute an outflow portion. The sealed water outlet 30 is provided with an outlet 30A for drainage above the sealed water reservoir 22. The outflow pipe 32 is arranged at an inclination θ such that the sealed water storage part 22 side is lower than the drain pipe 40 side. Due to this inclination, the wastewater remaining in the outflow pipe 32 after the drainage is completed flows back to the sealed water storage portion 22 side.

  On the other hand, the drain pipe 40 is inclined so that the downstream side is disposed at a low position.

  The inclination θ and the diameter and length of the outflow pipe 32 are set so that a sufficient amount of drainage is returned to the sealed water storage section 22 in consideration of an assumed tensile force from the drain pipe 40 side.

  For example, in the case of a drain trap for a unit bath, the length of the outflow pipe 32 is generally the length up to the outer dimension (outer peripheral end) of the unit bath. However, the outflow pipe 32 does not necessarily have this length, and may be shorter or longer than this length.

  The washing ground drainage inflow portion 14 includes an inner cylinder 15, a mounting flange 16, a eye plate 18, and a packing 17. The inner cylinder 15 includes a cylindrical side wall 15A and a flange portion 15B. The outer diameter of the side wall 15 </ b> A is a diameter that can be inserted inside the sealed water storage portion 22, and is inserted inside the sealed water storage portion 22. The tip of the inserted inner cylinder 15 and the bottom of the sealed water storage part 22 are separated from each other, and a gap S for drainage is formed. The collar portion 15B is disposed on the washing area side and is attached to a mounting flange 16 described later. The inner cylinder 15 divides the inside of the sealed water storage part 22 into an inner side and an outer side in the radial direction, and the washing area side and the outlet 30 </ b> A side are communicated with each other only by the gap S.

  The mounting flange 16 is annular and includes a mounting portion 16A and a flange portion 16B. A male screw that is screwed with the female screw portion 25 is formed on the outer surface of the mounting portion 16A, and is attached to the cylindrical portion 21 by being screwed with the female screw portion 25. The mounting portion 16A is an upper portion of the trap body 20. Placed in. A packing 17 is disposed between the cylindrical portion 21 and the mounting flange 16. An engagement portion 16C that is engaged with the flange portion 15B of the inner cylinder 15 is formed on the inner wall of the attachment portion 16A. The engagement portion 16 </ b> C and the flange portion 15 </ b> B are engaged, and the inner cylinder 15 is attached to the trap body 20.

  A pair of upper and lower ribs 16D is formed above the engaging portion 16C on the inner wall of the mounting portion 16A. A disc-shaped eye plate 18 is engaged between the ribs 16 </ b> D, and the opening of the washing place is covered by the eye plate 18. The eye plate 18 has a dust receiving recess 18A.

  Waste water from the washing area flows into the sealed water storage part 22 through the eye plate 18 and the inner cylinder 15. Waste water overflowing from the sealed water storage unit 22 flows out from the outlet 30A. The gap S between the tip of the inner cylinder 15 and the bottom of the sealed water storage unit 22 is closed by the sealed water stored in the sealed water storage unit 22, so that the odor from the outlet 30 </ b> A side can be removed from the bathroom. Is prevented from being discharged.

  Here, the level of the sealed water obtained in consideration of the loss due to the induction siphon, evaporation of the sealed water, etc. at a position higher than the boundary level H at which the gap S is in the closed state is defined as a required sealed water level Y. The required sealed water level Y in this embodiment is a position slightly higher than the height of the tip of the inner cylinder 15. In addition, about the required water level Y, although it changes with kinds etc. of a drain trap, in Japanese standard, it is about 50 mm-100 mm. The drain trap is closed when the water level is lower than the boundary level H.

  Next, drainage in this embodiment will be described.

  Normally, the water level of the sealed water F is near the upper end of the sealed water storage unit 22 as shown in FIG. When there is drainage from the bathtub side or the washing place, or both, drainage flows from the bathtub drainage inflow part 12 and the washing place drainage inflow part 14 into the sealed water storage part 22, and as shown in FIG. The inside of the main body 20 and the inside of the connecting member 12B are filled with drainage. The drainage is discharged through the gap S from the outlet 30 </ b> A to the outlet pipe 32 and from the outlet pipe 32 to the drain pipe 40.

  When drainage from the tub side and the washing area stops, the water level drops as shown in FIG. On the other hand, drainage continues from the outlet 30A. And when the return force by inclination (theta) becomes larger than the tensile force from the drain pipe 40 side, drainage stops. At this time, as shown in FIG. 3 (C), the sealing water F flows out from the sealing water storage unit 22 and the sealing water may run out. It is returned to the sealed water storage unit 22 by the inclination θ. Thereby, as shown in FIG. 3 (D), the sealed water storage unit 22 is filled with the sealed water F up to a water level higher than the required sealed water level Y and resealed.

  According to the present embodiment, since the drainage water is stored in the outflow pipe 32 by the drainage remaining in the outflow pipe 32 even after the sealed water has once flowed out from the sealed water storage section 22, the sealed water storage section is returned by the return of the drainage 22 can be sealed with water, and it is possible to prevent running out of the sealed water.

  In the present embodiment, the example in which the diameter of the outflow pipe 32 is larger than the diameter of the drain pipe 40 has been described, but the diameter of the outflow pipe 32 is approximately the same as that of the drain pipe 40 as shown in FIG. Also good. However, even in this case, when the drainage is completed, the drainage remains in the outflow pipe 32 against the tensile force from the drainage pipe 40 side, and the inclined θ is so sealed that the residual water storage unit 22 can be sealed with this residual drainage. The length of the outflow pipe 32 is designed.

  Moreover, although this embodiment demonstrated the example of the drain trap applied to a siphon drainage system, this invention can also be applied to normal drainage systems other than a siphon drainage system. In the case of a normal drainage system, the diameter of the outflow pipe 32 is approximately the same as that of the drainage pipe 40 as shown in FIG.

  In addition, when a siphon drainage system is used, since there is a high possibility that the sealed water is sucked from the drainage trap and flows out to the drainpipe than the normal drainage system, the drainage trap of the present embodiment can be preferably used. .

It is sectional drawing of the drain trap of this embodiment. It is a figure which shows the drainage process (A)-(B) of the drain trap of this embodiment. It is a figure which shows the sealing water return process (C)-(D) of the drain trap of this embodiment. It is sectional drawing of the modification of the drain trap of this embodiment. It is explanatory drawing of a siphon drainage system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Drain trap 12 Bath drainage inflow part 14 Washing area drainage inflow part 15 Inner cylinder 20 Trap main body 22 Sealed water storage part 30 Sealed water side outflow part 30A Outlet 32 Outlet pipe 40 Drain pipe

Claims (3)

An inflow portion configured with an inflow port through which wastewater flows, and
A sealed water storage section for storing drainage flowing in via the inflow port;
An outlet that is arranged on the downstream side of the sealed water storage unit and that flows out the drainage stored in the sealed water storage unit is configured above the sealed water storage unit and extends from the outlet. And an outflow portion configured with an outflow channel inclined so that the drainage can return from the downstream side to the upstream side,
Drain trap equipped with.   The drainage trap according to claim 1, wherein a siphon drainage system is connected downstream of the outflow part.   The drain trap according to claim 2, wherein the outflow path has a larger diameter than a drain pipe connected to the downstream side.

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