JPH0230545Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sewage conveying device for conveying wastewater from flush toilets, particularly water-saving type toilet bowls.

Traditionally, efforts have been made to make flush toilets more water-saving, but in recent years, flush toilets have appeared that use only a few liters of water for each flush.

This water-saving type flush toilet has sufficient functions to clean the inside of the toilet bowl with several liters of flushing water and to discharge waste to the outside of the toilet bowl.

However, in order for wastewater containing solid waste to flow smoothly through the drain pipe and transport the waste, it is necessary for the wastewater to collect at a certain amount or more, so in the water-saving type flush toilet mentioned above, the drain pipe must be horizontal. If the pipes are installed in a state close to that of water, even if a few liters of wastewater are intermittently flushed, only the waste water will flow and the waste will be left behind in the drain pipe. Especially if the drain pipe is long, the waste left in the pipe will harden. There was a risk that the drain pipes would be blocked.

Therefore, if the main sewage pipe, septic tank, etc. are far away, the above-mentioned water-saving flush toilet cannot be installed.

The present invention solves the above-mentioned problems and makes it possible to reliably transport waste water over long distances without leaving any solid waste, even when draining water from a water-saving flush toilet that uses only a few liters of water at a time. The purpose is to

The basic structure of this invention is that a sewage tank and siphon pipe are installed between the water-saving toilet and the drain pipe to store a certain amount of sewage, and when the sewage in the sewage tank exceeds a certain amount, it is flushed into the siphon pipe and causes a siphon effect. sewage in the sewage tank. In addition to discharging sewage, by providing the inlet and outlet of the sewage tank at opposite ends, the flow path of sewage in the sewage tank is lengthened to prevent it from falling directly from the inlet to the outlet. be.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In this embodiment, as shown in FIG. 1, an inlet 1 is provided on the upper surface of a sewage tank a, and an outlet 2 is provided on the lower surface.

The sewage tank a is formed in the shape of a flat circular can with an internal volume of several tens of liters, and an inlet 1 opened on the top surface is connected to a water-saving flush toilet c located above to drain sewage and filth. The receiving inflow pipe 3 is
Outflow pipes 4 for discharging the sewage and filth accumulated in the tank a into the siphon pipe b are integrally provided in the outflow ports 2 opened on the lower surface so as to project in the vertical direction, respectively.

By opening these inlet 1 and outlet 2 at the furthest position on a line passing through the center of the sewage tank a, the flow path of the filth in the sewage tank a is lengthened, and the filth that has flowed into the tank a can be directly flowed. Avoid falling into Exit 2.

Further, the sewage tank a is provided with a slight downward slope 5 with its lower surface facing the outflow port 2 so that when a siphon phenomenon occurs and the sewage is discharged, the sewage and filth smoothly flows into the outflow pipe 4.

The siphon pipe b is a pipe material having a diameter of, for example, 65 to 100 mm, and is connected to the lower end of the outflow pipe 4, and has an inlet part 6 that makes a U-turn in the middle and ascends at an appropriate angle.
, a midway portion 7 that bends downward and extends vertically at a position higher than the highest water level of the sewage tank a, and a drain pipe that is bent at right angles to the vertical portion 8 and constructed with an appropriate slope. and an outlet section 9 connected to d.

The part from the middle of the vertical part 8 to the outlet part 9 is narrowed down to a small diameter, for example, 40 to 65 mm in diameter.
It is formed into a tube shape of mm.

Further, a water reservoir portion 10 is provided at the bent portion of the outlet portion 9.
is formed.

The water reservoir portion 10 is formed by curving downward at an appropriate distance from the lower end of the vertical portion 8 toward the drain pipe d, and water is always stored on its lower surface.

The drain pipe d is formed to have a larger diameter than the large diameter portion of the siphon pipe b, and one end of the ventilation pipe 11 is connected to the upper surface thereof in a communicating manner.

The other end of the ventilation pipe 11 is connected to the horizontal upper surface of a communication pipe 12 that connects the flush toilet c and the inflow pipe 3, and when a siphon phenomenon occurs in the siphon pipe b, the primary This is to prevent negative pressure from occurring in the portion 13 by supplying air in the drain pipe d to the side.

Next, what is shown in Fig. 3 to Fig. 6 is a modified example of the sewage tank a, and the sewage tank a in Figs. The outflow port 2 was opened at the bottom of the flow, which is farthest from the flow.

The sewage tank a shown in FIGS. 5 and 6 has an inlet 1 at the upper side of the tank so that the sewage flows in the circumferential direction, and an outlet 2 at the lower part of the side at the farthest point from the flow.

In this sewage conveying device, when sewage intermittently flows into the sewage tank a in units of several liters from the water-saving flush toilet c through the inlet 1, the water level in the sewage tank a and the siphon pipe change. Slanted portion 14 of b
The water level of both will rise.

When several liters of sewage flows into the sewage tank a when it is almost full, the water level in the inflow pipe 3 rises rapidly, temporarily creating a large water level difference with the water level on the siphon pipe b side. Using this water level difference as a driving force, the dirty water in the inclined part 14 of the siphon pipe b overcomes the top part 15 and flows down the vertical part 8.

The inner diameter of the vertical portion 8 is from the middle to the inclined portion 14.
Since the sewage is constricted to be smaller than the inner diameter of the drain pipe d, the sewage collides with the constricted part 16, mixes with air, and flows down in a nearly full state, pushing out the air in the vertical section 8 toward the drain pipe d side, and draining the vertical section 8. Below the drain pipe d, the dirty water hits the water storage part 10 and mixes with air, causing the water level to rise, blocking ventilation with the drain pipe d side.

The air mixed in the water rides the water flow and is sequentially discharged to the drain pipe d side, and the air inside the vertical section 8 gradually decreases, until the inside of the siphon pipe b is filled with sewage, causing a siphon phenomenon, and the sewage tank a Dirty water until it's empty. Waste is discharged.

In the above-mentioned embodiment, since the flush toilet c was able to be flushed with about 2 to 3 liters of water, the middle part of the siphon pipe was bent at a position higher than the highest water level of the sewage tank a. However, the present invention is not limited to this, but in the case of a general water-saving type toilet c that can be flushed with about 6 to 8 liters, the water level on the inflow pipe 3 side rises too quickly and filth enters the ventilation pipe 11. The top of the siphon pipe b does not necessarily need to be higher than the highest water level of the sewage tank a, since this may cause clogging or reduce the drainage performance of the toilet bowl. Further, the siphon pipe b is narrowed to a small diameter from the middle of the vertical part 8 to the outlet part 9, but the pipe is not limited to this, and if a sufficient siphon phenomenon occurs depending on the drainage volume and inflow speed of the flush toilet c, the pipe can be narrowed. You don't have to.

In addition, although the ventilation pipe 11 is provided extending from the drain pipe d to the primary side of the inflow pipe 3, the present invention is not limited to this. For example, when the primary side of the inflow pipe 3 is communicated with the outside air by an elongated ventilation pipe, etc. is not necessary.

Since the present invention has the above configuration, it has the following advantages.

On the downstream side of the sewage tank that stores a certain amount of sewage,
By connecting a siphon tube that bends in a Z-shape, even water-saving flush toilets that use only a few liters of water at a time can be transported over long distances without leaving any solid waste behind. .

Therefore, even if the main sewage pipe or septic tank is far away, by using the sewage conveying device of the present invention, the above-mentioned water-saving type flush toilet can be installed without using separate power.

When using a water-saving flush toilet, the concentration of filth is higher than that of a conventional flush toilet, and the filth accumulates near the outlet of the sewage tank, blocking water flow and causing blockages or siphoning. However, in this invention, the outflow port is formed at an appropriate distance from the inflow port, and the bottom surface of the sewage tank is sloped slightly downward toward the outflow port. Since the flow path of filth to the outlet is lengthened, filth does not accumulate near the outlet and impede water flow.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of a wastewater conveying device showing one embodiment of the present invention, Fig. 2 is a plan view of the same, and Figs.
The figure shows a modified example of the sewage tank, and Figures 3 and 5
The figure is a plan view, and FIGS. 4 and 6 are cross-sectional views taken along lines - and - in FIGS. 3 and 5. a... Sewage tank, b... Siphon pipe, c...
Water-saving flush toilet, d...drain pipe, 1...inlet, 2...outlet, 5...downhill slope.

Claims (1)

[Scope of utility model registration request] A sewage tank with an inlet at the top and an outlet at the bottom, and a siphon pipe that connects to the outlet of this sewage tank and bends upward in a roughly U-shape, and then bends downward from an appropriate height position. The inlet is connected to a water-saving flush toilet bowl, the lower end of the siphon pipe is connected to a drain pipe, and the outflow port of the sewage tank is formed at an appropriate distance from the inlet, and the bottom surface A sewage conveying device characterized by having a slight downward slope toward an outlet.