A flush toilet

Abstract

The present invention discloses a flush toilet, comprising a toilet body, an N-type water tank, a water inlet valve, a water pump, and a connecting pipe. An opening is provided at the top of the toilet body, and the N-type water tank is inserted into the interior of the toilet body through the opening, so that a first cavity and a second cavity of the N-type water tank are located on either side of a water outlet pipe of the toilet body. The water inlet valve and the water pump are disposed in the N-type water tank. A first water inlet of the connecting pipe is located in the first cavity of the N-type water tank, and a second water inlet of the connecting pipe is located in the second cavity of the N-type water tank. The water outlet of the connecting pipe is connected to a water inlet of the water pump, and the water outlet of the water pump is connected to a flushing waterway in the toilet body. The flush toilet has advantages such as a large water tank capacity and ease of maintenance. Furthermore, the flushing function is achieved by the water pump, so that the toilet flushing is not affected by tap water pressure, thereby achieving zero-pressure flushing.

Description

Technical Field

[0001] The invention belongs to the technical field of toilet structures, and in particular relates to a flush toilet. Background Art

[0002] Floor-standing and wall-mounted miniaturized toilets are becoming a trend in the market due to their advantages such as small footprint and compact size. However, due to the small internal space of the ceramic body of these toilets, the space reserved for the water tank system is limited. To ensure flushing performance, most existing toilets use the following two solutions for the flushing system: one is to connect the wash ring water channel to the tap water pipe and directly flush the wash ring with tap water. Although this can reduce the size requirement of the water tank, the wash ring is affected by the tap water pressure during flushing, and zero-pressure flushing cannot be achieved. The other is to bury the toilet water tank in the wall. Although this method eliminates the volume of the water tank from the internal space of the toilet ceramic body, it increases the workload of toilet assembly and is difficult to maintain. Summary of the Invention

[0003] In view of the above problems, the present invention discloses a flush toilet to overcome the above problems or at least partially solve the above problems.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention provides a flush toilet, which comprises a toilet body, an N-shaped water tank, a water inlet valve, a water pump and a connecting pipe;

[0006] An opening is provided at the upper portion of the toilet body, and the n-type water tank is installed into the interior of the toilet body through the opening, so that the first cavity and the second cavity of the n-type water tank are located on both sides of the water outlet pipe of the toilet body, and the water inlet valve and the water pump are arranged in the n-type water tank;

[0007] The first water inlet of the connecting pipe is located in the first cavity of the N-type water tank, the second water inlet of the connecting pipe is located in the second cavity of the N-type water tank, the water outlet of the connecting pipe is connected to the water inlet end of the water pump, and the water outlet end of the water pump is connected to the flushing water channel in the toilet body.

[0008] Furthermore, the water inlet valve is arranged in the first cavity of the N-type water tank, and the water pump is arranged in the second cavity of the N-type water tank.

[0009] Furthermore, the water pump is fixed to the bottom of the second cavity through a water pump bracket.

[0010] Furthermore, the water pump is suspended and fixed on the side wall of the second cavity.

[0011] Furthermore, a spacing distance is preset between the first water inlet of the communicating pipe and the bottom of the first cavity, and between the second water inlet of the communicating pipe and the bottom of the second cavity.

[0012] Furthermore, the ratio of the diameters of the first water inlet of the communicating pipe to the second water inlet of the communicating pipe is consistent with the ratio of the water storage capacity of the first cavity to the water storage capacity of the second cavity.

[0013] Furthermore, an overflow port is provided on one side of the N-type water tank close to the pot surface of the toilet body, the overflow port is communicated with the pot surface of the toilet body, and the horizontal height of the overflow port is higher than the working water level height of the N-type water tank.

[0014] Furthermore, the flush toilet further comprises a switching valve, and the flushing waterway comprises a main flushing waterway and a wash ring waterway;

[0015] The water inlet end of the switching valve is communicated with the water outlet end of the water pump, the first water outlet end of the switching valve is communicated with the main flushing water channel, and the second water outlet end of the switching valve is communicated with the ring washing water channel.

[0016] Furthermore, the water outlet of the water pump is connected to the water inlet of the switching valve through a water outlet pipe;

[0017] The highest point of the water outlet pipe is higher than the overflow port; or

[0018] A check valve is provided on the water outlet pipe.

[0019] Furthermore, when the N-type water tank is installed inside the toilet body, the upper end of the N-type water tank is flush with the upper plane of the toilet body, and the lower end of the N-type water tank extends to the bottom of the toilet body.

[0020] The advantages and beneficial effects of the present invention are:

[0021] In the flush toilet of the present invention, by setting the water tank into an N-type structure, when the water tank and the toilet body are assembled, the water outlet pipe in the toilet body can be accommodated between the first cavity and the second cavity of the N-type water tank, so that the outline of the N-type water tank fits the structure in the toilet body. In this way, the water holding capacity of the water tank can be increased without increasing the volume of the toilet body; and, by arranging the water inlet valve and water pump in the N-type water tank, the volume capacity of the water tank can be further increased; in addition, the water pump simultaneously pumps out water from the first cavity and the second cavity of the N-type water tank through the connecting pipe for toilet flushing, thereby ensuring the flushing volume of the toilet, making the toilet flushing unaffected by the water pressure of the tap water, and being able to achieve zero water pressure flushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0023] Figure 1 This is a diagram showing the internal structure of a flush toilet in one embodiment of the present invention;

[0024] Figure 2 is a cross-sectional view of a flush toilet according to one embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the assembly of a toilet body and an N-type water tank in one embodiment of the present invention;

[0026] Figure 4 This is a diagram showing the internal structure of an n-type water tank in one embodiment of the present invention;

[0027] Figure 5 is a cross-sectional view of an n-type water tank according to an embodiment of the present invention;

[0028] Figure 6 A three-dimensional structural diagram of an n-type water tank in one embodiment of the present invention;

[0029] Figure 7 This is a disassembled structural diagram of a connecting pipe and a water pump in one embodiment of the present invention;

[0030] Figure 8 This is a diagram of the connection structure between the connecting pipe and the water pump in one embodiment of the present invention.

[0031] In the figure: 1. Toilet body; 1-1. Pot surface; 1-2. Opening; 2. N-type water tank; 2-1. First cavity; 2-2. Second cavity; 2-3. Connecting cavity; 3. Water inlet valve; 4. Water pump; 5. Connecting pipe; 5-1. First water inlet; 5-2. Second water inlet; 5-3. Water outlet; 6. Water pump bracket; 7. Overflow port; 8. Switching valve; 9. Water outlet pipe; 10. Fixing part; 11. Fixing hole; 12. Through hole; 13. Groove. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The technical solutions provided by various embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] In one embodiment of the present invention, a flush toilet is disclosed. Figures 1 to 3 As shown, the flush toilet includes a toilet body 1, an N-type water tank 2, a water inlet valve 3, a water pump 4 and a connecting pipe 5.

[0035] Specifically, an opening 1-2 is provided at the upper portion of the rear end of the toilet body 1, and the n-type water tank 2 is installed into the interior of the toilet body 1 through the opening 1-2, so that the n-type water tank 2 can be removed from the toilet body 1 in a vertical direction, thereby facilitating the maintenance of the flushing system in the flush toilet. Figures 4 to 6 As shown, the N-type toilet includes a first cavity 2-1, a second cavity 2-2, and a connecting cavity 2-3 that connects the upper end of the first cavity 2-1 with the upper end of the second cavity 2-2. When the N-type water tank is assembled with the toilet body 1, the outlet pipe within the toilet body 1 fits neatly between the first cavity 2-1 and the second cavity 2-2 of the N-type water tank 2, allowing the contour of the N-type water tank 2 to conform to the structure within the toilet body 1. This increases the water capacity of the water tank without increasing the volume of the toilet body 1. Furthermore, the water inlet valve 3 and water pump 4 are disposed within the N-type water tank 2. This eliminates the need for the valve 3 and water pump 4 to occupy additional space within the toilet body 1, allowing the N-type water tank 2 to be designed larger, further increasing its water capacity.

[0036] In addition, if Figure 7 and Figure 8 As shown, the connecting pipe 5 includes two water inlets (i.e., a first water inlet 5-1 and a second water inlet 5-2) and a water outlet (i.e., a water outlet 5-3). The first water inlet 5-1 of the connecting pipe 5 is located in the first cavity 2-1 of the n-type water tank 2, and the second water inlet 5-2 of the connecting pipe 5 is located in the second cavity 2-2 of the n-type water tank 2. The water outlet 5-3 of the connecting pipe 5 is connected to the water inlet end of the water pump 4, and the water outlet end of the water pump 4 is connected to the flushing waterway in the toilet body 1. The water pump 4 can simultaneously pump water from the first cavity 2-1 and the second cavity 2-2 of the n-type water tank 2 through the connecting pipe 5, thereby increasing the amount of water available for toilet flushing, improving the utilization rate of water in the n-type water tank 2, and making the toilet flushing unaffected by the tap water pressure, and can achieve zero water pressure flushing.

[0037] Further, if Figure 1 、 Figure 4 and Figure 5As shown, the water inlet valve 3 is arranged in the first cavity 2-1 of the n-type water tank 2, and the water pump 4 is arranged in the second cavity 2-2 of the n-type water tank 2. By arranging the water inlet valve 3 and the water pump 4 separately, on the one hand, the water inlet valve 3 and the water pump 4 have a sufficiently large layout space to facilitate the installation of both. On the other hand, the weight and water capacity of the two cavities of the n-type water tank are more similar. In this way, when the n-type water tank 2 is fixed on the toilet body 1, it is more stable and it is easier to control the water volume in the first cavity 2-1 and the second cavity 2-2. Of course, in other embodiments, the water inlet valve 3 and the water pump 4 can also be arranged in the first cavity 2-1 of the n-type water tank 2 or the second cavity 2-2 of the n-type water tank 2, or the water pump 4 can be arranged in the first cavity 2-1 of the n-type water tank 2 and the water inlet valve 3 can be arranged in the second cavity 2-2 of the n-type water tank 2.

[0038] In this embodiment, if Figure 3 、 Figure 5 and Figure 6 As shown, the bottom of the first cavity 2-1 is provided with a groove 13 that is concave toward the first cavity 2-1. The bottom of the groove 13 is provided with a through hole 12. The water inlet valve 3 is connected to the external direct water pipe through the through hole 12. The groove 13 is provided to reserve operating space for connecting the external direct water pipe to the water inlet valve 3; it is also provided to raise the water inlet valve 3, thereby controlling the operating water level of the water inlet valve 3 and meeting its functional requirements.

[0039] In addition, if Figure 1 、 Figure 5 、 Figure 7 and Figure 8 As shown, the water pump 4 is a submersible water pump, secured to the bottom of the second cavity 2-2 via a water pump bracket 6. Specifically, the water pump bracket 6 can be secured to the bottom of the second cavity 2-2 via screws or a snap-fit ​​structure. By placing the water pump 4 at the bottom of the second cavity 2-2, the water inlet of the water pump 4 is closer to the bottom of the second cavity 2-2. This ensures that the water inlet of the water pump 4 is submerged in water during multiple flushes. This allows the water pump 4 to immediately pump water from the N-type water tank 2, resulting in a faster flush response.

[0040] In other embodiments, the water pump can be suspended and fixed to the side wall of the second cavity, with the water pump's installation height aligned with the height of the water inlet valve. When the water in the N-type water tank is at the operating level, at least part of the water pump is located above the operating water level. This reduces the space occupied by the water pump below the operating water level in the N-type water tank, thereby increasing the water capacity of the N-type water tank. Furthermore, hanging the water pump on the side wall of the second cavity facilitates installation and maintenance of the water pump.

[0041] In this embodiment, if Figure 5 、 Figure 7 and Figure 8 As shown, the connecting pipe 5 also has an n-type structure. The connecting pipe 5 is preferably a hose, and the n-type structure of the connecting pipe 5 matches the n-type structure formed between the first cavity 2-1, the second cavity 2-2, and the connecting cavity 2-3. In this way, the middle part of the connecting pipe 5 is exactly located at the bottom of the connecting cavity 2-3, and the two ends of the connecting pipe 5 extend toward the first cavity 2-1 and the second cavity 2-2 respectively. A snap structure, such as a snap plate or a snap ring, can also be provided on the side wall of the n-type water tank 2 to fix the connecting pipe 5 through the snap structure, thereby facilitating the removal of the connecting pipe 5. It should be noted that the working water level of the n-type water tank is higher than the height of the bottom of the connecting cavity 2-3. In this way, when the water inlet valve 3 is replenished, the water in the first cavity 2-1 can flow into the second cavity 2-2 through the connecting cavity 2-3.

[0042] Furthermore, a preset distance is set between the first water inlet 5-1 of the connecting pipe 5 and the bottom of the first cavity 2-1, and between the second water inlet 5-2 of the connecting pipe 5 and the bottom of the second cavity 2-2. The preset distance ranges from 8 mm to 12 mm. This not only prevents dirt on the bottoms of the first and second cavities 2-1, 2-2 from being drawn into the water pump 4, but also ensures that the water pump 4 draws in more water, thereby increasing the utilization rate of the water in the n-type water tank 2.

[0043] In addition, the ratio of the diameters of the first and second water inlets of the connecting pipe is consistent with the ratio of the water storage capacities of the first and second cavities. This ensures that the water levels in the first and second cavities drop at the same level when the water pump draws water from the N-type water tank. This prevents one of the first and second cavities from being pumped too quickly, which could cause the pump to lose water after the water is drained. In this embodiment, the diameters of the first and second water inlets of the connecting pipe can be controlled by providing water diversion fittings at the water inlets. It should be noted that due to the preset spacing between the first water inlet of the connecting pipe and the bottom of the first cavity, and between the second water inlet of the connecting pipe and the bottom of the second cavity, a portion of the water in the first and second cavities cannot be pumped out. Therefore, the water storage capacity mentioned above in this embodiment specifically refers to the actual water storage in the first and second cavities minus the amount of water that cannot be pumped out.

[0044] In this embodiment, if Figure 1 、 Figure 2 、 Figure 4 and Figure 6As shown, an overflow port 7 is provided on the side of the N-type water tank 2 near the pot surface 1-1 of the toilet body 1. The overflow port 7 is connected to the pot surface 1-1 of the toilet body 1 and is located above the operating water level of the N-type water tank 2 but below the height of the upper end surface of the N-type water tank 2. Therefore, if the water inlet valve 3 fails, water above the overflow port 7 will flow into the pot surface 1-1 of the toilet body 1, thereby preventing water from overflowing from the N-type water tank 2. The height h of the CL line of the water inlet valve 3 above the overflow port 7 is 30.8 mm, which is greater than the regulatory requirement of 25.4 mm, providing greater safety and reliability.

[0045] Further, if Figure 1 and Figure 3 As shown, the flush toilet further includes a switching valve 8, and the flushing water channel includes a main flushing water channel and a wash ring water channel.

[0046] The water inlet end of the switching valve 8 is connected to the water outlet end of the water pump 4, the first water outlet end of the switching valve 8 is connected to the main flushing water channel, and the second water outlet end of the switching valve is connected to the ring washing water channel. In this way, the main flushing and ring washing of the flush toilet are both realized through the water pump 4 and are not affected by the tap water pressure.

[0047] Among them, one cycle of the switching valve control timing is: first, the first water outlet end of the switching valve is opened, and the second water outlet end of the switching valve is closed, and only the ring washing and flushing are performed; then, the first water outlet end of the switching valve is closed, and the second water outlet end of the switching valve is opened, and only the main flushing is performed; finally, the first water outlet end of the switching valve is opened, and the second water outlet end of the switching valve is closed, and only the ring washing and flushing are performed again.

[0048] Furthermore, a throttling unit is provided on the wash ring water channel to control the water outflow rate, preventing excessive water flow and splashing during flushing. This throttling unit can be a throttle valve or other structure capable of achieving a throttling effect. In this embodiment, the outlet of the main flush channel adopts a gradually narrowing structure, which can improve the spray capacity of the toilet's main flush, thereby improving the main flushing effect.

[0049] In this embodiment, if Figure 3 and Figure 4 As shown, the water outlet of the water pump 4 is connected to the water inlet of the switching valve 8 through the water outlet pipe 9. The water outlet pipe 9 is a hose.

[0050] The highest point of the water outlet pipe 9 is higher than the level of the overflow port 7, which can prevent dirty water from flowing back into the n-type water tank 2 when the flush toilet is blocked. Of course, in other embodiments, a check valve can also be provided on the water outlet pipe to achieve a check effect.

[0051] Further, if Figure 2As shown, when the n-type water tank 2 is installed into the interior of the toilet body 1, the upper end of the n-type water tank 2 is flush with the upper plane of the toilet body 1, and the lower end of the n-type water tank 2 extends to the bottom of the toilet body 1. This can maximize the use of the space inside the toilet body 1 and make the volume of the n-type water tank 2 larger.

[0052] In addition, if Figure 1 、 Figure 4 and Figure 6 As shown, a fixing portion 10 extends outward from the upper end of the n-type water tank 2, and a fixing hole 11 is provided on the fixing portion 10. The n-type water tank 2 is fixed to the toilet body 1 through the fixing hole 11 and bolts / screws.

[0053] The above description is only a specific embodiment of the present invention. Under the above teachings of the present invention, those skilled in the art may make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above description is only to better explain the purpose of the present invention, and the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A flush toilet, characterized in that: The flush toilet includes a toilet body, an N-type water tank, a water inlet valve, a water pump and a connecting pipe; An opening is provided at the upper portion of the toilet body, and the n-type water tank is installed into the interior of the toilet body through the opening, so that the first cavity and the second cavity of the n-type water tank are located on both sides of the water outlet pipe of the toilet body, and the water inlet valve and the water pump are arranged in the n-type water tank; The first water inlet of the connecting pipe is located in the first cavity of the N-type water tank, the second water inlet of the connecting pipe is located in the second cavity of the N-type water tank, the water outlet of the connecting pipe is connected to the water inlet end of the water pump, and the water outlet end of the water pump is connected to the flushing water channel in the toilet body; The water inlet valve is arranged in the first cavity of the n-type water tank, and the water pump is arranged in the second cavity of the n-type water tank; A predetermined spacing distance is provided between the first water inlet of the communicating pipe and the bottom of the first cavity, and a predetermined spacing distance is provided between the second water inlet of the communicating pipe and the bottom of the second cavity; The ratio of the diameters of the first water inlet of the communicating pipe to the second water inlet of the communicating pipe is consistent with the ratio of the water storage capacity of the first cavity to the water storage capacity of the second cavity.

2. The flush toilet according to claim 1, characterized in that: The water pump is fixed to the bottom of the second cavity through a water pump bracket.

3. The flush toilet according to claim 1, characterized in that: The water pump is suspended and fixed on the side wall of the second cavity.

4. The flush toilet according to claim 1, characterized in that: An overflow port is provided on one side of the N-type water tank close to the pot surface of the toilet body. The overflow port is communicated with the pot surface of the toilet body, and the horizontal height of the overflow port is higher than the working water level height of the N-type water tank.

5. The flush toilet according to claim 4, characterized in that: The flush toilet also includes a switching valve, and the flushing waterway includes a main flushing waterway and a wash waterway; The water inlet end of the switching valve is communicated with the water outlet end of the water pump, the first water outlet end of the switching valve is communicated with the main flushing water channel, and the second water outlet end of the switching valve is communicated with the ring washing water channel.

6. The flush toilet according to claim 5, characterized in that: The water outlet of the water pump is connected to the water inlet of the switching valve through a water outlet pipe; The highest point of the water outlet pipe is higher than the overflow port; or A check valve is provided on the water outlet pipe.

7. The flush toilet according to any one of claims 1 to 6, characterized in that: When the N-type water tank is installed in the interior of the toilet body, the upper end of the N-type water tank is flush with the upper plane of the toilet body, and the lower end of the N-type water tank extends to the bottom of the toilet body.

Images