JP7266874B2 - pressure-fed flush toilet - Google Patents

Description

The present invention relates to a flush toilet with a pumping device.
It is particularly easy to install, and can be used as a portable toilet in social welfare facilities, hospitals, and households, as a temporary toilet in various event venues, building/construction sites, and during renovations. The present invention relates to a pressure feed type flush toilet that can also be used as various sanitary appliances.

The present applicant has previously proposed a sanitary appliance with a pumping device (Patent Document 1).
In this kind of force-fed flush toilet, after the toilet bowl is used, wastes and the like are force-fed to the sewage and the like.
After that, by forming a puddle with a predetermined water level at the bottom of the bowl, it is possible to prevent dirt from adhering to the toilet bowl and to prevent odors and the like coming up through the drain pipe.
Also, when forming this puddle, the peripheral wall of the ball is also washed.
Here, it is necessary to supply air to the drainage channel so that the water in the puddle does not flow out to the drainage side due to the action of the siphon.
The flow control valve disclosed in Patent Document 1 has a simple structure, but is excellent in that it prevents backflow during pumping of sewage (dirt) and prevents siphon action due to ventilation.

Japanese Patent No. 4260780

SUMMARY OF THE INVENTION An object of the present invention is to provide a pressure feed flush toilet that is easy to install and has a high cleaning effect.

A pressure-feeding flush toilet according to the present invention comprises a bowl portion, a pressure-feeding pump connected to the bottom side of the bowl portion, a drain pipe connected to the pressure-feeding pump, a ventilation member provided in the middle of the drain pipe, and flush water. and a water diversion member for dividing the wash water supplied from the water supply pipe into the wash water for the ball portion and the wash water for the aeration member.

Here, when excrement received by the ball portion is pumped by the pump, the ventilation member cuts off the drainage path from the air to form a pumping path. This is to prevent siphon action from appearing.
For example, the ventilation member includes a valve body that floats in the flow of water, a backflow prevention valve seat that prevents the backflow of the waste water when the valve body floats and comes into contact with the valve body, and a ventilation part that the valve body descends to form. An example is one that has a vent valve seat that supports the .

In such a ventilation member, the flow of water is blocked by the valve body being pressed toward the backflow prevention valve seat by the water flow when sewage is pumped.
Therefore, by the time the valve body is pressed against the backflow prevention valve seat and the sealing pressure is generated, a small amount of dirty water may pass through the backflow prevention valve seat of the ventilation member.
The present invention is characterized in that a water diversion member is provided which enables cleaning of the inside of the ventilation member by diverting part of the cleaning water supplied for cleaning the ball portion toward the ventilation member. be.

The structure of the water dividing member is not limited as long as it can separate the washing water flowing to the ball portion and the washing water flowing to the ventilation member.
As an example that has a simple structure and is easy to attach to a toilet bowl, the water diversion member has a water diversion chamber, and the water diversion chamber has a ball water supply port for cleaning the ball portion and a ventilation member water supply port for cleaning the ventilation member. preferably have.
In this case, the water diversion chamber has a diversion wall projecting from the water diversion chamber for dividing the water flow toward the ball water supply port and the aeration member water supply port. is preferred.

In the present invention, the ball portion may be formed with a stepped water flow portion so that washing water flows toward the entire peripheral wall portion of the ball portion.
With this configuration, the stepped water flow portion facilitates the flow of washing water over the entire circumference of the peripheral wall portion of the ball portion.

In the force-feeding flush toilet bowl according to the present invention, part of the flushing water supplied to the bowl portion can be diverted and used for cleaning the inside of the ventilation member, so the hygiene of the toilet bowl is improved while having a simple structure. .

1 shows a structural example of a force-feed flush toilet according to the present invention. It shows the flow of wash water. 4 shows structural examples of a water diversion member and a ventilation member; Fig. 3 shows a partial cross-sectional view of a water diversion member; Fig. 3 shows an exploded view of the water diversion member; 4 shows a structural example of a ball portion;

A structural example of the pressure-feed flush toilet according to the present invention will be described below with reference to the drawings, but the present invention is not limited thereto.

FIG. 1 shows a structural example of a pressure-feed flush toilet bowl, and a bowl portion 11 schematically shows a cross section thereof.
FIG. 2 shows the flow of washing water, and FIG. 3 shows an enlarged view thereof.
A pressure-feeding pump 12 is connected to the bottom side of the bowl portion 11 of the toilet bowl, and the pressure-feeding pump 12 is connected to a drain pipe 13 for discharging water into sewage or the like.
Although not shown, the pressure-feeding pump 12 has an impeller built in a casing, and is an electric pump capable of pressure-feeding dirt and the like.
The drain pipe 13 is provided with a removable cover 13a for maintenance.
After the contaminants are pumped out, the bowl portion 11 is washed as indicated by the arrow in FIG. 14a is connected to, for example, water supply.
A valve 15 such as an electric ball valve is provided in the water supply pipe 14 and is ON-OFF controlled by an electric signal.

The tubular water supply pipe 14a is connected to a water diversion member 16, as shown in FIGS.
The ventilation member 17 has a backflow prevention function to prevent drainage from passing when sewage or the like is pumped by the pumping pump 12, and after the pumping pump 12 operates, air is ventilated in the drain pipe 13 and a siphon is formed. to prevent it from working.

A structural example of the ventilation member 17 will be described with reference to the cross-sectional view shown in FIG.
Below the spherical valve body 17e, there is a vent valve seat 17c that serves as a receiving tray when the valve body 17e descends. have.
Conversely, when the pressure feed pump 12 is actuated and waste water is passed through the drain pipe 13, a portion of this waste water flows into the ventilation member 17, thereby causing the valve body 17e to float and the check valve seat 17a to pass through. The water hole 17b is blocked, a sealing pressure is generated, and the water flow is interrupted.

Next, the flow of washing water will be described.
A water diversion member 16 is attached to the upper side of the side wall of the ball portion 11 .
As shown in FIGS. 4 and 5, the water diversion member 16 is of a type in which a recessed body portion 16a can be screwed onto the side wall of the ball portion 11 via a screw portion 16b.
The mounting structure is not limited, and a fitting structure may be used.
It has a lid portion 16e that covers the opening of the main body portion 16a, and the main body portion 16a and the lid portion 16e form a water diversion chamber 16A inside.
The body portion 16a and the lid portion 16e are fitted to each other by an insertion portion 16f provided on one side of the central portion and a fitting portion 16g provided on the other side, and project from the central portion on the side of the lid portion 16e. A flow dividing wall portion 16h is formed by dividing the water dividing chamber 16A into a fan shape.
The upper side of the dividing wall portion 16h is a water dividing chamber 16i for ventilation members, and the lower side is a water dividing chamber 16j for ball portions.
The ventilation member water diversion chamber 16i has a ventilation member water supply port 16d penetrating the opposing body portion 16a, and is connected to the ventilation member 17 via the water supply pipe 14b.
A water supply port 16c is provided through the main body 16a facing the ball water diversion chamber 16j, and is connected to the water supply pipe 14a. is formed.

With the water diversion member 16 having such a structure, when the valve 15 is opened as shown in FIG. Water rushes in.
Most of the water that has flowed in flows to the ball portion 11 side from the ball portion water inlets 16k and 16m on both sides via the ball water diversion chamber 16j.
Also, part of the supplied water is supplied to the ventilation member 17 from the diversion wall portion 16h provided on the lid portion 16e side of the water diversion chamber 16A via the ventilation member water diversion chamber 16i and the ventilation member water supply port 16d. flow in.
The cleaning water that has flowed into the ventilation member 17 flows into the valve body 17e via the ventilation hole 17b, so that the inside of the ventilation member 17 is cleaned.

The wash water flowing into the ball portion 11 side from the ball portion water supply ports 16k and 16m washes the inner peripheral surface of the bow portion 11 and forms a puddle.
FIG. 6 shows an example in which the present invention is applied to a portable toilet. By forming a stepped water flow portion 11c on the inner peripheral surface of the bowl portion 11, washing water flows around the bowl portion 11 while circulating in the water flow portion 11c. In this example, the washing water spreads over the entire inner peripheral surface of the ball portion by flowing to the bottom portion 11b of the ball portion.

11 Ball portion 11a Puddle 12 Force pump 13 Drainage pipe 14 Water supply pipe 15 Valve 16 Diversion member 17 Ventilation member

Claims (4)

a ball portion;
a pumping pump connected to the bottom side of the ball portion;
a drain pipe connected to the pumping pump;
a ventilation member provided in the middle of the drain pipe;
a water supply pipe for supplying washing water,
a water dividing member for dividing the washing water supplied from the water supply pipe into the washing water for the ball portion and the washing water for the ventilation member ;
The water diversion member has a water diversion chamber,
A pressure feed flush toilet, wherein the water diversion chamber has a ball water supply port for cleaning the ball portion and a ventilation member water supply port for cleaning the ventilation member. The water diversion chamber is for dividing the water flow toward the ball water supply port and toward the ventilation member water supply port, and has a diversion wall portion protruding from the water diversion chamber. The pressure-feed flush toilet bowl according to claim 1 . The ventilation member includes a valve body that floats in the presence of a water flow, a backflow prevention valve seat that prevents backflow of waste water from the drain pipe by the valve body floating and coming into contact with the valve body, and a valve seat that descends to ventilate. 3. A pressure-flush toilet bowl as claimed in claim 2 , further comprising a vent valve seat supported to form a joint. 4. The force-feeding flush toilet according to claim 3 , wherein the bowl portion has a stepped water flow portion so that flushing water flows toward the entire peripheral wall portion of the bowl portion.

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