JPH03122324A - Indoor drainage system - Google Patents

Abstract

PURPOSE:To make it exhibit drainage function without providing a trap separately by lowering a drainage horizontal branch pipe once from a drain source, and then raising it to the level higher than this and lower than the drain source end connecting it to a vertical pipe. CONSTITUTION:An indoor drainage system 10 is constituted, in which a drain source such as a sink 12, etc., and a drain vertical pipe 48 are coupled with a drain horizontal branch pipe 40, and the drain is discharged compulsorily using a pump 20. This drain horizontal pipe 40 is lowered once from the drain source to a first level lower than this, and next this is raised from the first level to a second level lower than the drain source and higher than the first level, and then it is connected to a drain vertical pipe 48. Hereby, one part of the drain horizontal pipe 40 can be made to function as a trap, and the necessity of equipping a trap separately can be removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an indoor drainage system, and more particularly to an indoor drainage system in which, for example, a pump pressure drainage system is used.

[Prior art]

The current plumbing system in apartment buildings is a gravity drainage system that requires a pipe slope.

In this gravity drainage system, for example, bell-shaped traps are used in sinks and bath units to prevent the backflow of pests and odors from common pipes and sewer pipes.
A trap is installed directly below the drain outlet of each appliance, such as an S-shaped trap for urinals and sinks, and a P-shaped trap for toilets and water discharge pans.

[Problem to be solved by the invention]

When these conventional traps are used in an indoor drainage system using a pump-forced drainage system, the sealing volume is small, so the seal may break due to self-siphoning caused by a large amount of drainage or overloading of the vertical pipe.

Furthermore, if the product is left unused for a long period of time, the sealing water may evaporate and the product may no longer function as a water seal.

In particular, when an S-shaped trap is used, the air layer generated downstream of the trap is pushed by the drainage water and reaches the pump, forming an air pocket in the pump chamber. Furthermore, when the amount of water discharged is small, there is a problem in that even if the pump is operating, the air cannot be drained due to the trapped air.

Therefore, the main object of the present invention is to provide an indoor drainage system that allows normal drainage even if a trap is provided.

[Means to solve the problem]

This invention provides an indoor drainage system in which a drainage source and a vertical pipe are connected by a drainage horizontal branch pipe, and the drainage is forcibly drained by a pump. level, and then raised from the first level to a second level that is lower than the level of the drainage source and higher than the first level and connected to the standpipe, so that a part of the side drainage branch pipe functions as a trap. This is an indoor drainage system that is characterized by:

[Effect]

Both ends of the drainage horizontal branch pipe are raised up, and the lower end is connected to the drainage source and the other end is connected to the vertical pipe. By raising both ends of the drainage horizontal branch pipe in this way, when drainage is stopped,
Water remains in the drainage side branch pipe. In this way, the portion of the drainage horizontal branch pipe in which water remains is made to function as a trap.

〔Effect of the invention〕

According to this invention, a part of the drainage horizontal branch pipe can function as a trap, so a conventional trap becomes unnecessary.

In addition, since the water sealing capacity and head can be made larger than conventional traps, the water sealing function is improved and drainage can be carried out without any problem even if the pump is installed in-line with the drainage horizontal branch pipe.

The above objects, 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 and 2A and 2B, the indoor drainage system 10 of this example includes a sink 12.
A drain port 16 is formed in the bottom surface of the sink 14 of the sink 12. Further, a portex-type line pump 20, for example, is housed horizontally in the hakama 18 below the sink 12.

The suction port (φ20) and the drain port 16 (
φ40) is connected by a connecting pipe 22 made of, for example, hard vinyl chloride. At this time, for example, a clamp joint 24 that can be attached and detached with one touch is used to connect the connecting pipe 22 and the pump 20.

An upper sensor 26a and a lower sensor 26b are provided at the upper and lower parts of the connecting pipe 22, respectively. As these upper sensor 26a and lower sensor 26b,
For example, a non-contact capacitive water level sensor is used. Further, a pump control device 28 is built in below the sink 12.

The pump control device 28 is connected to a power source 30 as shown in FIG.
and a pump control circuit 32, and controls starting and stopping of the pump 20 according to the output states of the upper sensor 26a and the lower sensor 26b.

A horizontal branch pipe 40 formed by a sheath pipe 36 and a drain pipe 38 inserted through the sheath pipe 36 is installed on the concrete slab 34.

This lateral branch pipe 40 is installed using the ``sheath pipe method''.

First, a sheath pipe 36 made of, for example, a φ34 corrugated polyethylene pipe is fixed onto the concrete slab 34 in a predetermined piping pattern. In this embodiment, the sheath tube 36 is fixed onto the concrete slab 34 by a sheath tube fixing saddle 42 made of, for example, hard PVC, and four right-angled mills are provided in the middle. At this time, one end of the sheath pipe 36 rises from the concrete slab 34 and faces the inside of the hakama 18, and within this sheath pipe 36 is a drainage pipe 3 made of, for example, a φ20 polybutene pipe.
8 is inserted. A lateral branch pipe 40 is thus formed, one end of which drain pipe 38 is connected to the outlet of the pump 20, for example by means of a clamp fitting 24.

The other end of the drain pipe 38 passes through the wall 44 and communicates with a drainage ladder 46 having a joint structure that is easily attached and detached, and is connected to the pipe 48 by the amount of water discharged. At this time, as can be clearly seen from FIG. 2B, the other end of the drain pipe 38 is formed rising from the concrete slab 34, and the connection part between the other end of the drain pipe 38 and the drain header 46 is connected to the drain on the concrete slab 34. It is set at a position higher than the pipe 3 (but lower than the drain port 16).

Then, the sheath pipe 36 is replaced from a corrugated pipe to a sheath pipe made of a noncombustible material such as a steel pipe at a point 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 formed in this way, water is drained as follows.

First, when the upper sensor 26a detects drainage, the pump 20 is activated by the pump control circuit 32 in response to the output of the upper sensor 26a. Thereafter, when there is no more drainage and the lower sensor 26b no longer detects drainage, the pump 20 is stopped by the pump control circuit 32 in response to the output of the lower sensor 26b. By operating the pump 20 in this manner, the waste water from the sink 12 is forced through the drain pipe 38 on the concrete slab 34 to the drain chamber and to the pipe 48.

Here, both ends of the drain pipe 38 are formed rising 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 the waste water remains in the drain pipe 38. . In this way, the portion of the drain pipe 38 where the waste water remains becomes, for example, a large P-shaped or U-shaped trap and performs a water sealing function.

Note that the pump 20 can normally drain water even if it is installed in any position such as in-line of the side branch pipe 40.Also, in the above embodiment, a polybutene pipe was used as the drain pipe 38, but polyethylene or cross-linked polyethylene Any flexible resin tube may be used.

Furthermore, starting and stopping of the pump 20 may be controlled by using one sensor as the water level sensor and operating this sensor on a timer.

In addition to the sink in the above example, there are other drainage sources as well.
This invention can be applied to all general domestic drainage equipment such as toilets, washrooms, bathrooms, and washing machine pans.

[Brief explanation of drawings]

FIG. 1 is an illustrative view showing an embodiment of the present invention. FIG. 2A and FIG. 2B are illustrative views showing this embodiment, with FIG. 2A being a plan view and FIG. 2B being a side view. FIG. 3 is a circuit diagram showing the 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 pipe, 38 is a drain pipe, and 48 is a drain chamber pipe.

Claims (1)

[Scope of Claims] In an indoor drainage system in which a drainage source and a standpipe are connected by a drainage horizontal branch pipe and drainage is forcibly discharged by a pump, the drainage horizontal branch pipe is connected from the drainage source to the drainage source. The drainage horizontal branch is lowered to a lower first level, and further raised from the first level to a second level lower than the level of the drainage source and higher than the first level and connected to the vertical pipe, and connected to the vertical pipe. An indoor drainage system characterized by a part of the pipe functioning as a trap.