JPH0738449Y2 - Drainage basin with trap - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage basin with a trap for draining wastewater such as sewage discharged from each household from a drainage introduction pipe to a main drainage pipe through a trap.

[0002]

2. Description of the Related Art Conventionally, a drainage basin with a trap is installed at a junction between a drainage introduction pipe and a drainage main pipe to prevent odors and the like from the drainage main pipe from entering the drainage introduction pipe side. There are various types of drainage basins with traps, and one of them is one in which an invert portion and a U-shaped trap are provided at the bottom of the basin via an overflow portion. Such a drainage basin with a trap is buried in the ground by connecting the drainage main pipe to the connection port at the end of the invert part and connecting the drainage introduction pipe to the tip of the trap.

[0003]

However, the above-mentioned drainage basin with a trap has a problem that it is difficult to integrally form the trap. Such a problem is caused by forming a trap connection port at a position adjacent to the invert part through the overflow part and separating the U
Although it can be solved by connecting the U-tube trap, in that case, it is necessary to connect it so that the U-tube trap does not easily fall off during transportation or construction.

Further, in the above-mentioned drainage basin with a trap, it is necessary to prevent the drainage flowing from the main drainage pipe to the invert section from flowing back to the trap over the overflow wall, and especially in the case of a small drainage basin. This is a problem because it easily flows backwards.

The present invention has been made in view of the above problems, and it is an object of the present invention that the drainage flowing from the main drainage pipe to the invert portion does not flow back to the U-shaped pipe trap, and the U-shaped pipe trap It is to provide a drainage basin with a trap that does not easily fall off.

[0006]

In order to achieve the above object, a drainage basin with a trap of the present invention has an invert portion at a bottom portion of the basin body and a connection port for connecting a drainage main pipe connected to the invert portion, and an upper portion. Has a connecting pipe for connecting the lower end of the main pipe cleaning pipe, and a trap connecting port opening downward is formed at a position adjacent to the above-mentioned invert part through an overflow part.
One end of the character pipe trap is rotatably connected, and the upper end of the overflow portion is located above the center of the connection port for connecting the drainage main pipe.

[0007]

[Operation] The water level of the drainage flowing from the main drainage pipe to the invert section is usually lower than the center of the connection port for connecting the main drainage pipe,
Since it is almost never higher than the center, if the upper end of the overflow is located above the center of the connection port for connecting the drainage main pipe like the drainage basin with a trap of the present invention, the drainage will exceed the overflow. This prevents the backflow from the invert section toward the U-tube trap. Moreover, if the overflow portion is high as described above, it is possible to form a trap connection port having a large depth almost equal to the height of the overflow portion at a position adjacent to the overflow portion by the trap connection port. The grip margin at one end of the character tube trap becomes large, and even if the U-shaped tube trap is rotatably connected, the trap does not easily fall off.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front sectional view of an embodiment of the present invention, and FIG.
Is a plan view of the same embodiment, FIG. 3 is a side view of a joint that constitutes the sill body, and FIG. 4 is a plan view of the joint.

In the figure, reference numeral 7 denotes a synthetic resin joint which constitutes the main body of the sluice, and at the bottom of the joint 7, an invert portion 24 and a connecting port 23 for connecting a main drain pipe connected to both ends of the invert portion, 23 is formed. A connecting tube 9 for connecting the lower end of the main pipe cleaning pipe is formed above the invert portion 24, that is, above the joint 7.

The joint 7 is integrally formed with an elbow-shaped connecting pipe 8 projecting laterally, and the trap connection port 25 at the lower end thereof is adjacent to the invert part 24 via the overflow part 26. It is formed so as to open downward in one direction.
One end of the synthetic resin U-shaped tube trap 3 is rotatably connected to the trap connection port 25.

The overflow portion 26 is formed so that its upper end is located higher than the center of the connection port 23 for connecting the main drainage pipe, and correspondingly, the trap connection port 25 is formed.
Is also formed on the connection port with a large depth. for that reason,
Since the amount of grip of one end of the U-shaped pipe trap 3 by the trap connection port 25 becomes large and the U-shaped pipe trap 3 is stably and reliably connected, it does not easily fall off during transportation or construction.

Further, the invert portion 24 at the bottom of the joint 7
A leg mounting cylinder 21 is formed on the lower surface of the leg pipe 22.
Are connected to each other, and the lower end of the U-shaped tube trap 3 and the leg portion 27 whose lower end position is aligned are provided. Therefore, the drainage basin A with a trap can be installed stably during construction because the lower end of the leg portion 27 and the lower end of the trap are at the same height and there is no step.
The piping work is easy.

Next, a pipe construction method using this drainage basin A with a trap will be described with reference to FIGS. 5 and 6.

First, the drainage basin A with a trap is supported by the leg portion 27 and the U-shaped pipe trap 3 and installed stably in the ground, and the drainage main pipes 2, 2 are connected to the connection ports 23, 23 at both ends of the invert portion 24.
Connect two. Then, the lower end of the main pipe cleaning pipe 10 in the vertical direction is connected to the connecting pipe 9 above the joint 7, the lid receiver 11 located on the ground portion is attached to the upper end of the main pipe cleaning pipe 10, and the connecting port 9 and the main pipe cleaning pipe 10 are attached. The main pipe cleaning port 4 is formed by the lid receiver 11 and the main pipe lid 5 is detachably attached to the lid receiver 11. Next, the U-shaped tube trap 3 is rotated to locate the tip of the trap in correspondence with the tip of the drainage introducing tube 1, connect the tip of the U-shaped tube trap 3 to the connecting cylinder 13 at the lower end of the branch tube 12, and branch The drainage introduction pipe 1 is connected to the connecting pipe 14 on the side of the pipe 12.
Connect. Then, the connecting cylinder 16 at the upper end of the branch pipe 12
Is connected to the lower end of the trap cleaning pipe 15 in the vertical direction, and a lid receiver 17 is attached to the upper end of the trap cleaning pipe 15. The branch pipe 12, the trap cleaning pipe 15 and the lid receiver 17 form the trap cleaning port 6. Then, the trap lid 18 is detachably attached to the lid receiver 17.

When constructed in this manner, the drainage from the drainage introduction pipe 1 passes through the U-shaped pipe trap 3, flows over the overflow portion 26, flows down to the invert portion 24, and is drained to the drainage main pipe 2. When the drainage is stopped, the U-shaped pipe trap 3 seals the water and the odor from the drainage main pipe 2 does not enter the drainage introduction pipe 1. On the other hand, since the water level of the drainage flowing from the main drainage pipe 2 into the invert portion 24 is usually lower than the center of the connection port 23 for connecting the main drainage pipe and never higher than the center, the upper end is above the center. There is no reverse flow towards the U-tube trap 3 beyond the located overflow 26. Further, by opening the main pipe cover 5 and the trap cover 18, the U-shaped pipe trap 3 can be easily cleaned through the main pipe cleaning port 4 and the trap cleaning port 6.

[0017]

As described above, according to the present invention, since the upper end of the overflow portion is located above the center of the connection port for connecting the drainage main pipe, the drainage flowing from the drainage main pipe to the invert portion exceeds the overflow portion. Backflow to the U-shaped trap,
Moreover, the depth of the trap connection port can be increased corresponding to the overflow portion, and the U-shaped tube trap can be pivotally connected so as not to drop off easily.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of a drainage basin with a trap according to the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a side view of a joint which constitutes the grid main body of the embodiment.

FIG. 4 is a plan view of the joint.

FIG. 5 is a cross-sectional view illustrating a pipe construction method using the drainage basin with a trap of the present invention.

FIG. 6 is a plan view illustrating the same pipe construction method.

[Explanation of symbols]

 2 Drainage main pipe 3 U-shaped pipe trap 7 Joint that constitutes the main body of the pipe 9 Connection cylinder 10 Main pipe cleaning pipe 23 Connection port for connection of drainage main pipe 24 Invert part 25 Trap connection port 26 Overflow part 27 Leg A A drainage basin with trap

Claims (1)

[Scope of utility model registration request] 1. An invert portion and a connection port for connecting a drainage main pipe connected to the invert portion at the bottom of the sill body, and a connection tube for connecting the lower end of the main pipe cleaning pipe at the upper portion, and the connection pipe is provided over the inversion portion. A trap connection opening that opens downward is formed at a location adjacent to the flow section to rotatably connect one end of the U-shaped tube trap, and the upper end of the overflow section is connected to the drain main tube. A drainage basin with a trap that is located above the center of the.