JP2786694B2 - Indoor drainage system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor drainage system, and more particularly to an indoor drainage system using, for example, a pumping drainage system.

[Conventional technology]

The current piping in dwelling units in an apartment house is a natural flow type (gravity type) drainage method requiring a pipe gradient.

In this natural drainage type drainage system, for the purpose of preventing invasion of pests from common plumbing and sewer pipes and preventing backflow such as odors, for example, bell traps in sinks and bath units, and S traps in urinals and sinks, In a toilet or a water discharge pan, a trap is provided immediately below a drain port of each device, such as a P-type trap.

[Problems to be solved by the invention]

When these conventional traps are used in an indoor drainage system of a pumping pumping drainage type, since the amount of sealed water is small, the trap may be broken due to a self-siphon phenomenon due to a large amount of drainage or an excessive load on a standing pipe. Further, in a state where the sealing water has not been used for a long period of time, the sealing water may evaporate and may not fulfill the sealing function.

In particular, when an S-type trap is used, an air layer generated downstream of the trap reaches the pump by being pushed by drainage, and forms an air pocket in the pump chamber. When the amount of drainage is small, there is a problem that drainage cannot be performed due to the air pool even when the pump is driven.

SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide an indoor drainage system that can normally drain even if a trap is provided.

[Means for solving the problem]

The present invention relates to an indoor drainage system in which a drainage source and a standpipe are connected by a drainage horizontal branch pipe so as to forcibly drain the water with a pump. Connecting one end to a drain at a second level higher than the first level and the other end to a standpipe at a third level higher than the first level and lower than the second level; An indoor drainage system characterized in that a branch pipe functions as a trap.

[Action]

Both ends of the drain horizontal branch pipe are raised and formed, one end of which is connected to a drain source and the other end of which is connected to a vertical pipe. By raising both ends of the drain horizontal branch pipe in this way, water remains in the drain horizontal branch pipe when drainage is stopped. The portion of the drain horizontal branch pipe in which water remains in this manner functions as a trap.

〔The invention's effect〕

According to the present invention, since the drainage horizontal branch pipe provided in the horizontal pipe can function as a trap, the conventional trap becomes unnecessary.

Since the amount of water sealed and the head can be increased as compared with the conventional trap, the water sealing function is improved, and even if the pump is installed in-line with the horizontal drain pipe, drainage can be performed without any trouble.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

〔Example〕

Referring to FIGS. 1, 2A and 2B, the indoor drainage system 10 of this embodiment includes a sink 12. sink
A drain 16 is formed on the bottom surface of the sink 14. Further, a vortex type line pump 20, for example, is housed laterally in a hakama 18 below the sink 12. The suction port (φ20) and the drain port 16 (φ40) of this pump 20
The connection is made by a connection pipe 22 made of, for example, hard vinyl chloride. At this time, the connection between the connection pipe 22 and the pump 20 is performed by, for example, a clamp joint 24 which can be detached with one touch.
Is used.

An upper sensor 26a and a lower sensor 26b are provided on the upper and lower portions of the connection pipe 22, respectively. As the upper sensor 26a and the lower sensor 26b, for example, a non-contact capacitance type water level sensor is used. Further, a pump control device 28 is incorporated below the sink 12. As shown in FIG. 3, the pump control device 28 includes a power supply 30 and a pump control circuit 32, and includes an upper sensor 26a and a lower sensor 2a.
The start and stop of the pump 20 are controlled according to the state of the output of 6b.

And, on the concrete slab 34, a horizontal branch pipe 40 formed by a sheath pipe 36 and a drain pipe 38 inserted and piped therethrough is piped. The horizontal branch pipe 40 is piped by a “sheath pipe method”.

First, a sheath pipe 36 made of, for example, a φ34 polyethylene corrugated pipe is fixed on a concrete slab 34 in a predetermined piping pattern. In this embodiment, the sheath pipe 36 is fixed on the concrete slab 34 by a sheath PVC fixing saddle 42 made of, for example, hard PVC, and four right-angled bends are provided on the way. At this time, the sheath tube 36
One end rises from the concrete slab 34 and faces the inside of the hakama 18. Then, a drainage pipe 38 made of, for example, a polybutene pipe of φ20 is inserted into the sheath pipe 36. The horizontal branch pipe 40 is thus formed, and one end of the drain pipe 38 is connected to the discharge port of the pump 20 by, for example, the clamp joint 24.

The other end of the drain pipe 38 penetrates the wall 44 and communicates with a drain header 46 having a joint structure that can be easily attached and detached, and is connected to a drain stack 48. At this time, as can be clearly understood from FIG. 2B,
The other end of the drain pipe 38 is formed so as to rise from the concrete slab 34, and the connection between the other end of the drain pipe 38 and the drain header 46 is located at a position higher than the drain pipe 38 on the concrete slab 34 (excluding the drain port 16). Lower position).

Then, the sheath pipe 36 is changed from a corrugated pipe to a sheath pipe made of a noncombustible material such as a steel pipe at a position 1 m inside the penetrating room of the wall 44, and is connected to the drain header 46 like the drain pipe 38.

In the indoor drainage system 10 thus formed, drainage is performed as follows.

First, when the upper sensor 26a detects drainage, the pump control circuit 32 starts the pump 20 in response to the output of the upper sensor 26a. Thereafter, when the drainage runs out and the lower sensor 26b no longer detects the drainage, the pump control circuit 32 stops the pump 20 in response to the output of the lower sensor 26b. By operating the pump 20 in this manner, the drainage from the sink 12 is forcibly pumped through the drainage pipe 38 on the concrete slab 34 to the drainage stack 48.

Here, both ends of the drain pipe 38 are formed to rise from the concrete slab 34, and one end is connected to the discharge port of the pump 20 and the other end is connected to the drain header 46, so that drain water remains in the drain pipe 38. . As described above, the portion of the drain pipe 38 where the drain water remains remains as a large trap of, for example, a P type or a U type, and fulfills a water sealing function.

It should be noted that the pump 20 can normally drain even if it is installed at any position such as in-line of the horizontal branch pipe 40.

Further, in the above-described embodiment, the polybutene pipe is used as the drain pipe 38, but any flexible resin pipe made of polyethylene, cross-linked polyethylene, or the like may be used.

Furthermore, one sensor may be used as a water level sensor, and the start and stop of the pump 20 may be controlled by operating this sensor by a timer.

In addition to the sink of the above-described embodiment, the present invention can be applied to all general household drainage facilities such as toilets, washrooms, bathrooms, and washing machine pans.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention. 2A and 2B are illustrative views showing this embodiment,
FIG. 2A is a plan view and FIG. 2B is a side view. FIG. 3 is a circuit diagram showing a pump control device. In the figure, 10 is an indoor drainage system, 12 is a sink, 20 is a pump, 26a is an upper sensor, 26b is a lower sensor, 28 is a pump control device, 36 is a sheath tube, 38 is a drain pipe, and 48 is a drain stack. .

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E03C 1/12 E03C 1/122 E03C 1/284

Claims (1)

(57) [Claims] An indoor drainage system in which a drainage source and a standing pipe are connected by a drainage horizontal branch pipe and forcibly drained by a pump, wherein the drainage horizontal branch pipe is horizontally piped at a first level. ,
One end thereof is connected to the drain at a second level higher than the first level, and the other end is the riser at a third level higher than the first level and lower than the second level. And an indoor drainage system, wherein the drainage horizontal branch pipe functions as a trap.