EP3819438A1

EP3819438A1 - Toilet flushing system with water tank and pump

Info

Publication number: EP3819438A1
Application number: EP20206021.6A
Authority: EP
Inventors: Chao Lu; Junxiao Lv; Bangchao XIE; Xiangyi TU
Original assignee: Xiamen Solex High Tech Industries Co Ltd
Current assignee: Xiamen Solex High Tech Industries Co Ltd
Priority date: 2019-11-05
Filing date: 2020-11-05
Publication date: 2021-05-12
Also published as: CN112779958A

Abstract

The present disclosure provides a toilet flushing system (2), comprising a water tank (21), a pressure pump (22), a water inlet pipe (23) and a water flushing pipe (24); the water inlet pipe (23) is connected to a water inlet (211) of the water tank (21), a connection position between the water inlet pipe (23) and the water inlet (211) of the water tank (21) is disposed with an open air suction port (212); and a water outlet of the water tank (21) is connected to the water flushing pipe (24) through the pressure pump (22). The toilet flushing system (2) with the water tank (21) can achieve a better vacuum breaking effect and effectively avoid a backflow of water in the water tank. The present disclosure further provides a toilet, which comprises the toilet flushing system.

Description

FIELD OF THE DISCLOSURE

The present disclosure relates to household sanitary wares, in particular relates to a toilet.

BACKGROUND OF THE DISCLOSURE

The traditional toilet generally has a water tank, and dirt in the toilet is flushed by the water stored in the water tank. Water flows into the water tank due to a water inlet pipe being connected to an angle valve, since the water inlet pipe will generate a negative pressure state during a water inflow process, the water inlet of the water tank will generate a siphon phenomenon due to a negative pressure, the water in the water tank will be sucked into the water inlet pipe to pollute the water source. Therefore, the traditional toilet has a vacuum breaker disposed at the water inlet of the water tank to break the negative pressure at the water inlet. However, a reliability of the traditional vacuum breaker is relatively limited, and it is easy to be damaged after a long-term use, after the damage, a function of the toilet is still in normal use, the user is difficult to find that the vacuum breaker is damaged and cannot be repaired in time.

BRIEF SUMMARY OF THE DISCLOSURE

The main technical problem of the present disclosure to be solved provides a toilet flushing system with a water tank, which can achieve a better vacuum breaking effect and effectively avoid a backflow of water in the water tank.
In order to solve the aforementioned technical problems, the present disclosure provides a toilet flushing system, characterized in that, comprising a water tank, a pressure pump, a water inlet pipe and a water flushing pipe;
the water inlet pipe is connected to a water inlet of the water tank, a connection position between the water inlet pipe and the water inlet of the water tank is disposed with an open air suction port; and
a water outlet of the water tank is connected to the water flushing pipe through the pressure pump.
In a preferred embodiment, at least one sensor module is disposed in the water tank.
In a preferred embodiment, the at least one sensor module comprises an inflow liquid level sensor and a flushing water liquid level sensor;
the inflow liquid level sensor is in communication with or is electrically connected to an inflow electromagnetic valve, and the flushing water liquid level sensor is in communication with or is electrically connected to the pressure pump;
the inflow liquid level sensor is disposed with a liquid level for opening the inflow electromagnetic valve and a liquid level for closing the inflow electromagnetic valve; and the flushing water liquid level sensor is disposed with a liquid level for opening the pressure pump.
In a preferred embodiment, the water tank is connected to an inflow pipe, an upper end of the inflow pipe defines the water inlet of the water tank, the upper end of the inflow pipe is connected to the water inlet pipe; the air suction port is disposed between the inflow pipe and the water inlet pipe; the inflow pipe is further disposed with an overflow pipe disposed below the air suction port, and the other end of the overflow pipe is connected to a toilet flushing tank.
In a preferred embodiment, the cross-sectional area of the inflow pipe is 700mm²~5000mm².
In a preferred embodiment, the inflow pipe is disposed with a water inlet assembly disposed above the air suction port; and a flow stabilizing device comprising at least two mesh pieces is disposed in the water inlet assembly.
In a preferred embodiment, the water flushing pipe comprises a main flushing pipe and an annular flushing pipe; and the main flushing pipe and the annular flushing pipe are respectively connected to flushing electromagnetic valves and check valves in series.
In a preferred embodiment, the toilet flushing system with the water tank further comprises a washing pipe, the washing pipe is connected to the water inlet pipe through a three-way valve, the three-way valve is connected to the water inlet pipe in series, and the washing pipe is connected to the other connection port of the three-way valve.
In a preferred embodiment, a filter is connected to the washing pipe in series.
The present disclosure further provides a toilet, which comprises the toilet flushing system.
Compared with the existing techniques, the technical solution has the following advantages.

1. The present disclosure provides a toilet flushing system with a water tank. A water inlet structure fully opened and separated is disposed between the water inlet and the water inlet pipe. Compared with the existing vacuum breaker, it can better prevent the pollution of the water source due to the polluted water flowing back.
2. The present disclosure provides a toilet flushing system with a water tank. Compared with the traditional direct flushing toilet, when the system is used to flush, which is not limited by external water pressure, the flushing effect is better due to the built-in water tank.
3. The present disclosure provides a toilet flushing system with a water tank. By installing a liquid level sensor, when the liquid level of the water tank is low, water can be automatically refilled, and when the liquid level of the water tank is insufficient, the pressure pump cannot pump water.
4. The present disclosure provides a toilet flushing system with a water tank. An overflow pipe is disposed on the inflow pipe of the water tank, after the liquid level sensor fails, excess water in the water tank flows out through the overflow pipe to prevent the water tank from being full and flowing back.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a perspective view of a toilet flushing system of a preferred embodiment of the present disclosure;
FIG. 2 illustrates another perspective view of the toilet flushing system of the preferred embodiment of the present disclosure;
FIG. 3 illustrates a schematic view of a liquid level arrangement of liquid level sensors in the preferred embodiment of the present disclosure;
FIG. 4 illustrates an exploded view of a water inlet assembly of the preferred embodiment of the present disclosure;
FIG. 5 illustrates a waterway diagram of the toilet flushing system in the preferred embodiment of the present disclosure;
FIG. 6 illustrates a schematic view of a toilet of the preferred embodiment of the present disclosure.

Reference signs:

1-toilet body, 2-toilet flushing system, 21-water tank, 22-pressure pump, 23-water inlet pipe, 24-water flushing pipe, 211-water inlet, 212-air suction port, 213-inflow liquid level sensor, 214-flushing water liquid level sensor, 215-inflow pipe, 216-overflow pipe, 217-mounting column, 231-inflow electromagnetic valve, 232-water inlet assembly, 233-flow restriction valve, 241-main flushing pipe, 242-annular flushing pipe, 2411, 2421- flushing electromagnetic valves, 2412, 2422-check valves, 25- washing pipe, 251-three-way valve.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure will be further described below, however, the scope of the present disclosure of is not limited thereto.
Referring to FIGS. 1 to 6, a toilet comprises a toilet body 1 and a toilet flushing system 2 with a water tank.
The toilet flushing system 2 with the water tank comprises a water tank 21, a pressure pump 22, a water inlet pipe 23 and a water flushing pipe 24; the water inlet pipe 23 is connected to a water inlet 211 of the water tank 21, and a connection position between the water inlet pipe 23 and the water inlet 211 comprises an open air suction port 212; when water flows into the water inlet pipe 23 to generate a negative pressure, the air suction port 212 sucks in some air to break a vacuum of the water inlet 211 to prevent the water in the water tank 21 from flowing back and to prevent the water source from pollution due to polluted water in the water tank flowing back. A water outlet of the water tank 21 is connected to the water flushing pipe 24 through the pressure pump 22. In this way, a toilet flushing system 2 with the water tank is defined, and water is added into the water tank 21 through the water inlet pipe 23, then the water is pumped from the water tank 21 through the pressure pump 22, and then water is flushed through the water flushing pipe 24.
The toilet flushing system 2 with the water tank needs to achieve two functions: 1) When water in the water tank 21 is insufficient, the water is automatically added into the water tank through the water inlet pipe 23. 2) When water in the water tank 21 is insufficient, the pressure pump 22 will not pump the water from the water tank 21. In a condition of a liquid level in the water tank 21 is insufficient, that the dirt can not be completely cleaned by water flushing due to insufficient flushing force of the flushing water is avoided.
In order to achieve the two functions, one or more liquid level sensors are disposed in the water tank 21, and an inflow electromagnetic valve 231 disposed in the water inlet pipe 23 is opened or is closed according to a height of the liquid level in the water tank 21; when the toilet flushes with water, the pressure pump 22 sucks water or does not suck water from the water tank 21 according to the height of the liquid level in the water tank.
The one or more liquid level sensors can be a single liquid level sensor or a plurality of liquid level sensors used in combination. In this embodiment, the one or more liquid level sensors comprise an inflow liquid level sensor 213 and a flushing water liquid level sensor 214; the inflow level sensor 213 comprises a liquid level for opening the inflow electromagnetic valve and a liquid level for closing inflow electromagnetic valve; the flushing water liquid level sensor comprises a liquid level for opening pressure pump. When the liquid level in the water tank is lower than the liquid level for opening the inflow electromagnetic valve, the inflow electromagnetic valve 231 is opened, and the water inlet pipe 23 discharges the water into the water tank 21. When the liquid level in the water tank is higher than the liquid level for closing the inflow electromagnetic valve, the inflow electromagnetic valve 231 is closed, and the water inlet pipe 23 stops to discharge the water into the water tank 21. When the liquid level of the water tank 21 is higher than the liquid level for opening the pressure pump, the pressure pump 22 is configured to pump the water from the water tank 21.
In this embodiment, in order to achieve a connection between the water tank 21 and the water inlet pipe 23, an upper end of the water tank 21 is connected to an inflow pipe 215, and an upper end of the inflow pipe 215 defines the water inlet 211, which is connected to the water inlet pipe 23; the inflow pipe is further disposed with an overflow pipe 216 disposed below the air suction port 212, and the other end of the overflow pipe 216 is connected to the toilet body 1. The purpose for an arrangement of the overflow pipe 216 is that when the inflow liquid level sensor 213 fails, the inflow electromagnetic valve 231 is always in an open state, and the water tank 21 will be filled with the water, after the arrangement of the overflow pipe 216, excess water can flow into the toilet body 1 through the overflow pipe 216 to prevent the water from overflowing.
In this embodiment, a distance between the air suction port 212 and the overflow pipe 216 is greater than 20 mm and less than 100 mm; a lower edge of an inner pipe of the overflow pipe 216 is 0-50 mm higher than an overflow surface of the ceramic basin. A cross-sectional shape of the overflow pipe is a circle shape or a rectangular shape.
An inner diameter of the inflow pipe 215 is 30-80mm, and a shape can be a circle shape, a polygonal shape, a rectangular shape, and an irregular shape, and a range of a cross-sectional area ranges from 700mm² to 5000mm²; the range of the cross-sectional area being in this range cooperates with a flow restriction valve 233 connected to the water inlet pipe 23 in series to ensure that a flow volume of the water tank is limited to 3~10L/min. The flow volume is configured to not only meet a requirement that the water tank is filled in a short time, but also limit a noise within a reasonable range when the water is filled.
The inflow pipe 215 is disposed with a water inlet assembly 232 disposed above the air suction port 212; a flow stabilizing device comprising at least two mesh pieces 2321 is disposed in the water inlet assembly 232 to prevent water splashing, and the number of the mesh pieces is 2 layers or more. An upper end surface of the inflow pipe 215 extends upward to define one or more mounting columns 217, and the water inlet assembly 232 is fixedly connected to end surfaces of the one or more mounting columns 217 by screws. In this embodiment, the one or more mounting columns 217 are three mounting columns 217, which are disposed along the upper end surface of the inflow pipe 215 at intervals, and a space between the one or more mounting posts 217 defines the open air suction port 212.
In this embodiment, the water flushing pipe 24 comprises a main flushing pipe 241 and an annular flushing pipe 242; the main flushing pipe 241 and the annular flushing pipe 242 are respectively connected to flushing electromagnetic valves 2411 and 2421 and check valves 2412 and 2422 in series. When water is being flushed, the flushing electromagnetic valves 2411 and 2421 disposed on the main flushing pipe 241 and the annular flushing pipe 242 are respectively opened, and the check valves 2412 and 2422 function to prevent the polluted water in a toilet flushing tank from flowing back. According to different water flushing procedures, such as a full-length flushing and a half-length flushing, the flushing electromagnetic valves 2411 and 2421 remains open for different durations. In addition, the flushing electromagnetic valve 2411 of the main flushing pipe 241 is closed prior to the flushing electromagnetic valve 2412 of the annular flushing pipe 242, and after a main flushing ends, an annular flushing maintains for a period of time.
In this embodiment, the toilet is further added with a washing function, which is configured to wash people after defecation. Therefore, the toilet flushing system 2 with the water tank further comprises a washing pipe 25. The washing pipe 25 is connected to the water inlet pipe 23 through a three-way valve 251. The three-way valve 251 is connected to the water inlet pipe 23 in series, and the washing pipe 25 is connected to the other connection port of the three-way valve. A filter 252 is connected to the washing pipe 25 in series, so that the flushing water can be filtered to ensure that the water contacting the skin is clean.
The present invention may be summarized as follows: The present disclosure provides a toilet flushing system, comprising a water tank, a pressure pump, a water inlet pipe and a water flushing pipe; the water inlet pipe is connected to a water inlet of the water tank, a connection position between the water inlet pipe and the water inlet of the water tank is disposed with an open air suction port; and a water outlet of the water tank is connected to the water flushing pipe through the pressure pump. The toilet flushing system with the water tank can achieve a better vacuum breaking effect and effectively avoid a backflow of water in the water tank. The present disclosure further provides a toilet, which comprises the toilet flushing system.
The aforementioned embodiments are merely some embodiments of the present disclosure, and the scope of the disclosure of is not limited thereto. Thus, it is intended that the present disclosure cover any modifications and variations of the presently presented embodiments provided they are made without departing from the appended claims and the specification of the present disclosure.

Claims

A toilet flushing system with a water tank, characterized in that, comprising a water tank (21), a pressure pump (22), a water inlet pipe (23) and a water flushing pipe (24);
the water inlet pipe (23) is connected to a water inlet (211) of the water tank (21), a connection position between the water inlet pipe (23) and the water inlet (211) of the water tank (21) is disposed with an open air suction port (212); and

a water outlet of the water tank (21) is connected to the water flushing pipe (24) through the pressure pump (22).
The toilet flushing system with the water tank according to claim 1, characterized in that at least one sensor module (213, 214) is disposed in the water tank (21).
The toilet flushing system with a water tank according to claim 2, characterized in that, the at least one sensor module (213, 214) comprises an inflow liquid level sensor (213) and a flushing water liquid level sensor (214);
the inflow liquid level sensor (213) is in communication with or is electrically connected to an inflow electromagnetic valve (231), and the flushing water liquid level sensor (214) is in communication with or is electrically connected to the pressure pump (22);

the inflow liquid level sensor (213) is disposed with a liquid level for opening the inflow electromagnetic valve (231) and a liquid level for closing the inflow electromagnetic valve (231); and the flushing water liquid level sensor (214) is disposed with a liquid level for opening the pressure pump (22).
The toilet flushing system with the water tank according to any one or more of claims 1 to 3, characterized in that, the water tank (21) is connected to an inflow pipe (215), an upper end of the inflow pipe (215) defines the water inlet (211) of the water tank (21), the upper end of the inflow pipe (215) is connected to the water inlet pipe (23); the air suction port (212) is disposed between the inflow pipe (215) and the water inlet pipe (25); the inflow pipe (215) is further disposed with an overflow pipe (216) disposed below the air suction port (212), and the other end of the overflow pipe (216) is connected to a toilet flushing tank.
The toilet flushing system with the water tank according to claim 4, characterized in that the cross-sectional area of the inflow pipe (215) is 700mm²~5000mm².
The toilet flushing system with the water tank according to any one or more of claims 1 to 5, characterized in that, the inflow pipe (215) is disposed with a water inlet assembly (232) disposed above the air suction port (212); and a flow stabilizing device comprising at least two mesh pieces (2321) is disposed in the water inlet assembly (232).
The toilet flushing system with the water tank according to any one or more of claims 1 to 6, characterized in that, the water flushing pipe (24) comprises a main flushing pipe (241) and an annular flushing pipe (242); and the main flushing pipe (241) and the annular flushing pipe (242) are respectively connected to flushing electromagnetic valves (2411, 2421) and check valves (2414, 2422) in series.
The toilet flushing system with the water tank according to any one or more of claims 1 to 7, characterized in that, further comprising a washing pipe (25), the washing pipe (25) is connected to the water inlet pipe (23) through a three-way valve (251), the three-way valve (251) is connected to the water inlet pipe (23) in series, and the washing pipe (25) is connected to the other connection port of the three-way valve (23).
The toilet flushing system with the water tank according to claim 8, characterized in that a filter (252) is connected to the washing pipe (25) in series.
A toilet, characterized in that comprises the toilet flushing system according to any one or more of claims 1 to 9.