Toilet flushing structure and toilet applying same

Abstract

The application provides a toilet flushing structure and a toilet applying the same. The toilet flushing structure comprises a first water tank, a second water tank, a drain valve, a first water inlet valve, a second water inlet valve, a third water inlet valve, a linkage assembly and a water suction pipe. The second water tank is communicated with the first water tank through a drain port and the drain valve. The first water inlet valve, the second water inlet valve and the third water inlet valve are installed in the second water tank. The linkage assembly is connected with and simultaneously controls the drain valve and the first water inlet valve. The water suction pipe is provided with a pipe diameter contraction part and a pipe diameter expansion part, and a water suction hole is arranged between the pipe diameter contraction part and the pipe diameter expansion part. The drain speed of the second water cup is faster than that of the third water cup. Through the linkage assembly, the drain valve and the first water inlet valve can be simultaneously started. Through the three groups of water inlet valves and the water suction pipe, each water outlet can independently drain water, so that the water outlet sequence is controllable.

Description

TECHNICAL FIELD

[0001] The application relates to a toilet flushing structure and a toilet applying the same. BACKGROUND

[0002] The flushing system is an important component of a toilet, and the water outlet generally includes circle water and main flushing water. The traditional circle water and main flushing water are simultaneously discharged, and the water outlet mode causes water waste. With the improvement of living standards, consumers have higher requirements for the traditional flushing system, and researchers also strive to design a flushing structure which is cleaner and more water-saving. At present, some flushing systems appear on the market, which can control the water outlet sequence of the circle water and the main flushing water, let the circle water flush the toilet wall first, flush the dirt into the toilet water trap, and then spray the main flushing water to take away all the dirty water. Due to the existence of the water outlet sequence, the flushing system is more complicated, especially in the case of one-key starting, some manufacturers set control electronic components, but the flushing system of this type must be powered on, and cannot be used in the case of power failure, and the design scheme still has the problem of poor reliability. SUMMARY

[0003] The application is to solve the above technical problems, and proposes a flushing structure which is more compact and does not need to be powered on.

[0004] In the first aspect, a toilet flushing structure is provided, which comprises a first water tank, a second water tank, a drain valve, a first water inlet valve, a second water inlet valve, a third water inlet valve, a linkage assembly and a water suction pipe, wherein,

[0005] The second water tank is communicated with the first water tank through a drain port and the drain valve, and can discharge water into the first water tank.

[0006] The first water inlet valve is installed in the second water tank, and a drain port of the first water inlet valve is a first water outlet port which is used as circle water of the toilet.

[0007] The linkage assembly is connected and controls the drain valve and the first water inlet valve to discharge and inlet water at the same time, so that the second water tank discharges water into the first water tank, and the first water inlet valve is communicated and inlets water at the same time.

[0008] The second water inlet valve and the third water inlet valve are both installed in the second water tank and respectively comprise a second water stop cup and a third water stop cup. The second water stop cup has a faster discharge speed than the third water stop cup, and the second water inlet valve inlets water earlier than the third water inlet valve. A drain port of the second water inlet valve forms a second water outlet port which can provide main flushing water for the toilet.

[0009] The water suction pipe is provided with a pipe diameter contraction and a pipe diameter expansion, and a water suction hole is formed between the pipe diameter contraction and the pipe diameter expansion. During installation, the water inlet end of the water suction pipe is connected to the water outlet of the third water inlet valve. The water suction hole is immersed in the first water tank and sucks water in the first water tank. The water outlet end of the water suction pipe includes two branches, i.e., a third water outlet and a fourth water outlet, the third water outlet can supply water to the water storage bay of the closestool, and the fourth water outlet is connected to the second water stop cup, so that the water in the second water stop cup is first filled, thereby causing the second water inlet valve to be closed in advance, reducing the water pressure sharing, thereby increasing the water inlet amount of the third water inlet valve, and further increasing the water flow speed at the pipe diameter contraction of the water suction pipe, enhancing the water suction pressure of the water suction pipe, and being able to suck out the water in the first water tank as much as possible.

[0010] During use, the user connects and simultaneously controls the water drainage of the drainage valve and the water inlet of the first water inlet valve through the linkage assembly, so that the second water tank discharges water into the first water tank, and at the same time, the first water inlet valve is connected and water is supplied to provide circle water for the closestool. When the water in the second water tank continues to decrease and is lower than the second water stop cup and the third water stop cup, the second water stop cup and the third water stop cup start to discharge water, and since the water leakage hole of the second water stop cup is larger than that of the third water stop cup, the height of the floating ball in the second water stop cup decreases faster, the second water inlet valve starts to inlet water, and discharges water to the second water outlet to provide main flushing water for the closestool. Then, the third water inlet valve also starts to inlet water to provide supplementary water for the closestool, and at the same time, water is added to the second water stop cup, causing the second water inlet valve to be closed in advance, the water is concentrated to the third water inlet valve, the water flow speed at the pipe diameter contraction of the water suction pipe is increased, the water suction pressure of the water suction pipe is enhanced, and the water in the first water tank can be sucked out as much as possible. Finally, the water overflows the second water stop cup and flows into the second water tank, the water in the second water tank rises, the floating balls of the first water inlet valve and the third water inlet valve float up and control the corresponding water inlet parts to stop water inlet, and the water in the first water tank and the second water tank returns to the initial state or the last state, completing a water discharge action.

[0011] The linkage assembly can be used to simultaneously start the drainage valve and the first water inlet valve, three groups of water inlet parts and a water suction pipe are arranged, each water outlet can independently discharge water, and the water discharge sequence can be controlled.

[0012] The closestool flushing structure provided by the application can control the water discharge sequence of each water outlet and can be controlled by one key.

[0013] Preferably, the water leakage hole of the second water stop cup is larger than that of the third water stop cup, or the capacity of the second water stop cup is less than that of the third water stop cup, so that the water discharge speed of the second water stop cup is faster than that of the third water stop cup, and the second water inlet valve inlets water earlier than the third water inlet valve.

[0014] Preferably, the second water tank is arranged in the first water tank, so as to reduce the overall volume, or the second water tank is arranged on the top of the first water tank.

[0015] Preferably, the second water tank, or the second water tank and the first water tank, is provided with a recessed groove in the middle, so as to enable the water tank to be installed on the top of the S-bend of the closestool, the drain valve is arranged on one side of the recessed groove, and the first water inlet valve, the second water inlet valve and / or the third water inlet valve is arranged on the other side of the recessed groove.

[0016] Preferably, the linkage assembly comprises a mounting seat, a swing lever and a swing switch, wherein,

[0017] the mounting seat is mounted in the second water tank, the swing lever is rotatably mounted in the middle of the mounting seat and located between the drain valve and the first water inlet valve, one end of the swing lever is a driving end connected with a driving pull rope, and the other end is a swing end, the swing lever is provided with a pressing part, and a reset spring is arranged between the swing lever and the mounting seat or the second water tank, so as to provide a reset force for the swing lever.

[0018] the swing switch is rotatably mounted in the middle of the mounting seat, one end of the swing switch is a driven end, and the other end is a valve starting end and is connected with the drain valve, and the driven end and the swing end are connected through a linkage pull rope.

[0019] In use, the driving pull rope pulls the swing lever, drives the pressing part to move, and the swing end pulls the swing switch through the linkage pull rope, so as to simultaneously realize the action of pressing the float and starting the valve by the swing switch. The linkage structure of the pull rope can reduce the complexity and installation difficulty of the linkage structure, and the length of the pull rope can be set according to the actual use requirement, so as to ensure the best linkage effect.

[0020] Preferably, the rotation shaft of the swing lever is arranged in a horizontal direction, and the end of the pressing part is provided with a pressing rod or a pressing plate.

[0021] Preferably, in order to realize the adjustable installation distance of the swing lever and the swing switch, the mounting seat comprises a first seat body and a second seat body, the swing lever is mounted on the first seat body, and the swing switch is mounted on the second seat body.

[0022] Preferably, the first water inlet valve comprises a first water stop cup, and the bottom of the first water stop cup is sealed.

[0023] Preferably, the water suction pipe comprises a water inlet section, a mixed water outlet section and a water suction section, and specifically,

[0024] The water inlet section comprises a water inlet channel, one end of the water inlet channel is provided with a water inlet, and the other end is provided with a converging water outlet, and the water entering the water inlet channel in sequence through the water inlet, the water inlet channel and the converging water outlet.

[0025] The mixed water outlet section comprises a water outlet channel, one end of the water outlet channel is provided with a mixed water inlet, and the other end is provided with a mixed water outlet. The diameter of the mixed water inlet is larger than that of the converging water outlet.

[0026] The water suction section is connected between the water inlet section and the mixed water outlet section. The converging water outlet of the water inlet section is close to and faces the mixed water inlet of the mixed water outlet section, and the converging water outlet can spray water flow into the mixed water inlet. The water suction hole is arranged in the water suction section, and the water suction hole communicates the interval section between the converging water outlet and the mixed water inlet. When the high-speed water flow is sprayed from the converging water outlet and flows into the mixed water inlet, the water suction section generates suction and sucks water from the outside into the mixed water inlet through the water suction hole.

[0027] The present application can generate a Venturi effect by arranging the converging water outlet, the water suction hole and the mixed water outlet. When the water suction pipe is arranged in the first water tank and connected with the first water inlet valve, the water in the water tank can be sucked away by using the Venturi effect when the third water inlet valve is filled with water.

[0028] Preferably, the water suction hole of the water suction section is at least two, and is uniformly distributed on the outer periphery between the converging water outlet and the mixed water inlet.

[0029] Preferably, the water suction hole adopts a slope towards the outside of the water suction pipe on the side wall close to the converging water outlet, which can guide the water flow into the mixed water inlet and reduce the resistance of the water flow.

[0030] Preferably, the water inlet section, the mixed water outlet section and the water suction section are integrally formed. Alternatively, any two of the water inlet section, the mixed water outlet section and the water suction section are integrally formed, and the other independent section is connected in abutment, and the forming mode is flexible.

[0031] Preferably, the first water inlet valve comprises a first water stop cup. The first water stop cup is also provided with a water leakage hole.

[0032] Preferably, the first water stop cup and the second water stop cup communicate and share the same water leakage hole or are separately arranged.

[0033] Preferably, the water inlets of the first water inlet valve, the first water inlet valve and the third water inlet valve are communicated, which greatly reduces the overall volume and occupied space.

[0034] Preferably, the cup mouth of the second water-stopping cup is lower than the third water-stopping cup, when the fourth water outlet communicates with the second water tank, due to the lower cup mouth of the second water-stopping cup, the float of the second water inlet valve is first floated, and the effect that water is concentrated to the third water inlet valve can also be achieved.

[0035] In a second aspect, a toilet is provided, which adopts the toilet flushing structure of the first aspect.

[0036] From the above description of the present application, the present application has the following beneficial effects:

[0037] By setting the linkage assembly, the drain valve and the first water inlet valve can be started at the same time, and by setting three groups of water inlet components and water suction pipes, each water outlet can be independently watered, so that the water outlet sequence can be controlled.

[0038] The second water tank is arranged in the first water tank, which can reduce the overall volume.

[0039] The linkage structure of the pull rope type is arranged, which can reduce the complexity and installation difficulty of the linkage structure, and the length of the pull rope can be set according to the actual use requirement, so as to ensure the best linkage effect.

[0040] The water suction pipe is arranged, which can suck away the water in the first water tank.

[0041] By connecting the water inlets of the first water inlet valve, the second water inlet valve and the third water inlet valve, the overall volume and occupied space can be greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0042] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application.

[0043] Among them:

[0044] Figure 1 It is a shaft side view of a toilet flushing structure Figure 1 ;

[0045] Figure 2 It is a shaft side view of a toilet flushing structure Figure 2 ;

[0046] Figure 3 It is a top view of a toilet flushing structure

[0047] Figure 4 It is a sectional view of a toilet flushing structure

[0048] Figure 5 It is a shaft side view of a toilet flushing structure Figure 3; hidden (first tank and second tank)

[0049] Figure 4 is an axial view of a toilet flushing structure Figure 7 ; hidden (first tank and second tank)

[0050] Figure 5 is an axial view of a toilet flushing structure Figure 8 ; hidden (first tank and second tank)

[0051] Figure 9 is an axial view of a linkage assembly

[0052] Figure 10 is an axial view of a linkage assembly

[0053] Figures 1 to 10 is a sectional view of a linkage assembly

[0054] Figures 1 to 7 The labels in the figures are as follows: first tank 1, second tank 2, drain valve 3, first water inlet valve 4, first water stop cup 41, second water inlet valve 5, second water stop cup 51, water leakage hole A1, third water inlet valve 6, third water stop cup 61, water leakage hole A2, linkage assembly 7, mounting seat 71, swing lever 72, driving end 721, driving pull rope 722, swing end 723, pressing part 724, linkage pull rope 725, swing switch 73, driven end 731, valve starting end 732, water suction pipe 8, water inlet section 81, contracted water outlet 811, mixed water outlet section 82, mixed water inlet 821, water suction section 83, water suction hole 831, water inlet pipe 9. Embodiment

[0055] In order to make the technical problems, technical solutions and beneficial effects of the present application more clear and understandable, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0056] Please refer to Figure 8 A toilet flushing structure includes a first tank 1, a second tank 2, a drain valve 3, a first water inlet valve 4, a second water inlet valve 5, a third water inlet valve 6, a linkage assembly 7, and a water suction pipe 8. In other embodiments, a tank cover is also included.

[0057] The second tank 2 is connected to the first tank 1 through a drain port and the drain valve 3, and can drain water into the first tank 1. In an embodiment, in order to reduce the volume of the flushing structure and the occupied space of the water tank, the second tank 2 is arranged in the first tank 1. In another embodiment, the first water inlet valve 4, the second water inlet valve 5, and the third water inlet valve 6 are connected to the water inlet ports, which can also greatly reduce the overall volume and occupied space.

[0058] In an embodiment, in order to be able to install the water tank on the S-bend of the toilet, the second water tank 2 and the first water tank 1 are provided with a recess for positioning, and the water tank can be erected on the S-bend. The drain valve is arranged on one side of the recess for positioning 11, and the first water inlet valve 4, the second water inlet valve 5 and the third water inlet valve 6 are arranged on the other side of the recess for positioning.

[0059] The first water inlet valve 4 is installed in the second water tank 2, and the drain port of the first water inlet valve 4 is the first water outlet port, which is used as the flushing water of the toilet.

[0060] The linkage assembly 7 connects and simultaneously controls the drain of the drain valve 3 and the water inlet of the first water inlet valve 4, so that the second water tank 2 discharges water into the first water tank 1, and at the same time, the first water inlet valve 4 is connected and water is inletted.

[0061] In an embodiment, the linkage assembly 7 includes a mounting seat 71, a swing rod 72 and a swing switch 73, wherein,

[0062] Please refer to Figure 9 The mounting seat 71 is installed in the second water tank 2. The middle part of the swing rod 72 is rotatably installed on the mounting seat 71 and is located between the drain valve 3 and the first water inlet valve 4. One end of the swing rod 72 is a driving end 721 connected with a driving pull rope 722, and the other end is a swing end 723. The swing rod 72 is provided with a pressing part 724. A reset spring is arranged between the swing rod 72 and the mounting seat 71 to provide a reset force for the swing rod.

[0063] The middle part of the swing switch 73 is rotatably installed on the mounting seat 71, one end is a driven end 731, and the other end is a valve actuating end 732 and is connected to the drain valve 3. The driven end 731 and the swing end 723 are connected through a linkage pull rope 725. In this embodiment, the valve actuating end 732 also pulls open the drain valve 3 through the pull rope, and in other embodiments, other switch modes and connection modes can be used.

[0064] In use, the driving pull rope 722 pulls the swing rod 72 and drives the pressing part 724 to move, and the swing end 723 pulls the swing switch 73 through the linkage pull rope 725, so that the action of pressing the float down by the pressing part 724 and actuating the valve by the swing switch 73 can be realized at the same time. The linkage structure of the pull rope can reduce the complexity and installation difficulty of the linkage structure, and the length of the pull rope can be set according to the actual use requirements to ensure the best linkage effect.

[0065] In other embodiments, the rotation axis of the swing lever 72 is arranged horizontally. The end of the pressing part 724 is provided with a pressing rod or pressing plate, which can move downward with the swing of the swing lever 72 and press the float of the water inlet device.

[0066] In another embodiment, in order to realize the adjustable installation spacing of the swing lever 72 and the swing switch 73, the mounting seat 71 comprises a first seat body and a second seat body. The swing lever 72 is mounted on the first seat body. The swing switch 73 is mounted on the second seat body.

[0067] The second water inlet valve 5 and the third water inlet valve 6 are both mounted in the second water tank 2 and respectively comprise a second water stop cup 51 and a third water stop cup 61.

[0068] The water leakage hole A1 of the second water stop cup 51 is larger than the water leakage hole A2 of the third water stop cup 61. When the water in the first water tank 1 is discharged, the water discharge speed of the second water stop cup 51 is faster than that of the third water stop cup 61, and the second water inlet valve 5 is earlier than the third water inlet valve 6 to inlet water. In other embodiments, the capacity of the second water stop cup 51 can be smaller than that of the third water stop cup 61, so as to realize the faster water discharge speed of the second water stop cup 51 than that of the third water stop cup 61 and the earlier water inlet of the second water inlet valve 5 than that of the third water inlet valve 6.

[0069] The water discharge port of the second water inlet valve 5 forms a second water outlet, which can provide main flushing water for the closestool.

[0070] The water suction pipe 8 is provided with a pipe diameter contraction and a pipe diameter expansion, and a water suction hole 831 is arranged between the pipe diameter contraction and the pipe diameter expansion. When installed, the water inlet end of the water suction pipe 8 is connected to the water discharge port of the third water inlet valve 4. The water suction hole 831 is immersed in the first water tank 1 and sucks the water in the first water tank 1. The water discharge end of the water suction pipe 8 is connected to a water outlet pipeline (not shown), and the water outlet port of the water outlet pipeline comprises two branches, i.e. a third water outlet and a fourth water outlet. The third water outlet can supply water to the water storage bay of the closestool, and the fourth water outlet is connected to the second water stop cup 51, so that the water in the second water stop cup 51 is filled first, thereby making the second water inlet valve 5 close earlier, reducing the water pressure sharing, increasing the water inlet amount of the third water inlet valve 6, further increasing the water flow speed at the pipe diameter contraction of the water suction pipe 8, enhancing the water suction pressure of the water suction pipe 8, and being able to suck the water in the first water tank 1 as much as possible.

[0071] In other embodiments, the cup opening of the second water stop cup 51 is lower than that of the third water stop cup 61. When the fourth water outlet is connected to the second water tank 2, the float of the second water inlet valve 5 floats first due to the lower cup opening of the second water stop cup 51, and the same effect of closing the second water inlet valve 5 first and concentrating water to the third water inlet valve 6 can be realized.

[0072] Please refer to Figure 10 and ​ In an embodiment, the water suction pipe 8 comprises a water inlet section 81, a mixed water outlet section 82 and a water suction section 83, in particular,

[0073] The water inlet section 81 comprises a water inlet channel, one end of which is provided with a water inlet port, and the other end is provided with a converging water outlet port 811. The water entering the water inlet port, the water inlet channel and the converging water outlet port 811 in turn.

[0074] The mixed water outlet section 82 comprises a water outlet channel, one end of which is provided with a mixed water inlet port 821, and the other end is provided with a mixed water outlet port. The diameter of the mixed water inlet port 821 is larger than that of the converging water outlet port 811.

[0075] The water suction section 83 is connected between the water inlet section 81 and the mixed water outlet section 82. The converging water outlet port 811 of the water inlet section 81 is close to and faces the mixed water inlet port 821 of the mixed water outlet section 82, and the converging water outlet port 811 can spray water flow into the mixed water inlet port 821. The water suction holes 831 are provided in the water suction section 83, preferably, the water suction holes 831 of the water suction section 83 are at least two and are uniformly distributed on the outer periphery between the converging water outlet port 811 and the mixed water inlet port 821. The water suction holes 831 communicate between the converging water outlet port 811 and the mixed water inlet port 821. When the high-speed water flow is sprayed from the converging water outlet port 811 and rushes into the mixed water inlet port 821, the water suction section 83 will generate suction and suck water from the outside into the mixed water inlet port 821 through the water suction holes 831. In other embodiments, the water suction holes 831 on the side wall close to the converging water outlet port 811 adopt a slope towards the outside of the water suction pipe 8, which can not only guide the water flow into the mixed water inlet port 821, but also reduce the resistance of the water flow.

[0076] The present application can generate a Venturi effect by setting the converging water outlet port 811, the water suction hole 831 and the mixed water outlet port, and when the water suction pipe 8 is placed in the first water tank 1 and connected to the third water inlet valve 4, the water in the water tank can be sucked away by the Venturi effect when the third water inlet valve 6 is filled with water.

[0077] In other embodiments, the first water inlet valve 4 comprises a first water stop cup 41. The first water stop cup 41 is also provided with a water leakage hole. Preferably, the first water stop cup 41 and the second water stop cup 51 communicate and share the same water leakage hole, which is simple in structure, and in other embodiments, the water leakage holes of the first water stop cup 41 and the second water stop cup 51 can be separately provided. Alternatively, the bottom of the first water stop cup 41 can also be sealed.

[0078] In use, the user connects and simultaneously controls the water discharge valve 3 and the first water inlet valve 4 through the linkage assembly 7, so that the second water tank 2 discharges water into the first water tank 1, and the first water inlet valve 4 is connected and water is supplied to provide flushing water for the closestool. When the water in the second water tank 2 continues to drop and is lower than the second water stop cup 51 and the third water stop cup 61, the second water stop cup 51 and the third water stop cup 61 start to discharge water. Since the water leakage hole of the second water stop cup 51 is larger than that of the third water stop cup, the height of the floating ball in the second water stop cup 51 drops faster, the second water inlet valve 5 starts to supply water, and the second water outlet discharges water to provide main flushing water for the closestool. Then, the third water inlet valve 6 also starts to supply water to provide supplementary water for the closestool, and water is added to the second water stop cup 51, causing the second water inlet valve 5 to close in advance, and water is concentrated to the third water inlet valve 6, increasing the water flow velocity at the pipe diameter contraction of the water suction pipe 8, enhancing the water suction pressure of the water suction pipe 8, and being able to remove the water in the first water tank 1 as much as possible. Finally, water overflows the second water stop cup 51 and flows into the second water tank 2, the water in the second water tank 2 rises, the floating balls of the first water inlet valve 4 and the third water inlet valve 6 float up and control the corresponding water inlet parts to stop supplying water, and the water in the first water tank 1 and the second water tank 2 returns to the initial state or the last state, completing a water discharge action.

[0079] The linkage assembly 7 and the water suction pipe 8 are arranged, so that the water discharge valve 3 and the first water inlet valve 4 can be started simultaneously, three groups of water inlet parts and the water suction pipe 8 are arranged, so that each water outlet can independently discharge water, so that the water discharge sequence can be controlled.

[0080] The above describes the present application in conjunction with the drawings, and it is obvious that the specific implementation of the present application is not limited by the above method. Any non-essential improvement or direct application of the concept and technical solution of the present application to other occasions is within the protection scope of the present application.

Claims

1. A toilet flushing structure, characterized by, The utility model provides a water heating device, including: a first water tank; a second water tank connected to the first water tank through a drain outlet and a drain valve; a first water inlet valve installed in the second water tank; the drain outlet of the first water inlet valve is a first water outlet; the first water inlet valve includes a first water stop cup provided with a water leakage hole; a linkage assembly for simultaneously controlling the drain valve and the first water inlet valve; a second water inlet valve and a third water inlet valve are both installed in the second water tank and include a second water stop cup and a third water stop cup, respectively; the second water stop cup has a faster drain speed than the third water stop cup; the drain outlet of the second water inlet valve forms a second water outlet; the water inlets of the first, second, and third water inlet valves are connected; a water suction pipe provided with a pipe diameter contraction part and a pipe diameter expansion part, and a water suction hole is formed between the pipe diameter contraction part and the pipe diameter expansion part; the water inlet end of the water suction pipe is connected to the drain outlet of the third water inlet valve; the water suction hole is immersed in the first water tank and sucks water in the first water tank; the water outlet end of the water suction pipe includes two branches, i.e., a third water outlet and a fourth water outlet, and the fourth water outlet is connected to the second water stop cup or the second water tank.

2. A toilet flushing structure according to claim 1, wherein The water leakage hole of the second water stop cup is larger than that of the third water stop cup, or the capacity of the second water stop cup is smaller than that of the third water stop cup.

3. The toilet flushing structure according to claim 1, wherein The second water tank is arranged in the first water tank, or the second water tank is located on the top of the first water tank.

4. The toilet flushing structure according to claim 1 or 3, wherein The second water tank, or the second water tank and the first water tank, is provided with a recessed groove in the middle part; the drain valve is arranged on one side of the recessed groove; the first, second, and third water inlet valves are arranged on the other side of the recessed groove.

5. The toilet flushing structure according to claim 1, wherein The linkage assembly includes a mounting seat, a swing rod, and a swing switch; The mounting seat is installed in the second water tank; The middle part of the swing rod is rotatably installed on the mounting seat and located between the drain valve and the first water inlet valve; one end of the swing rod is a driving end connected to a driving pull rope, and the other end is a swing end; the swing rod is provided with a pressing part; a return spring is arranged between the swing rod and the mounting seat or the second water tank; The middle part of the swing switch is rotatably installed on the mounting seat; one end of the swing switch is a driven end, and the other end is a valve starting end and is connected to the drain valve; the driven end and the swing end are connected through a linkage pull rope; The driving pull rope pulls the swing rod, drives the pressing part to move, controls the first water inlet valve to inlet water, and the swing end pulls the swing switch through the linkage pull rope, drives the swing switch to move, and controls the drain valve to outlet water.

6. A toilet flushing structure according to claim 5, wherein The rotation shaft of the swing rod is arranged in a horizontal direction; the end part of the pressing part is provided with a pressing rod or a pressing plate.

7. A toilet flushing structure according to claim 5, wherein The mounting seat includes a first seat body and a second seat body; the swing rod is installed on the first seat body; the swing switch is installed on the second seat body.

8. A toilet flushing structure according to claim 5, wherein The first water inlet valve includes a first water stop cup; the bottom of the first water stop cup is sealed.

9. The toilet flushing structure according to claim 1, wherein The water suction pipe includes a water inlet section, a mixed water outlet section, and a water suction section; The water inlet section includes a water inlet channel; one end of the water inlet channel is provided with a water inlet, and the other end is provided with a contraction water outlet; The mixed water outlet section comprises a water outlet channel, one end of which is provided with a mixed water inlet, and the other end is provided with a mixed water outlet; the diameter of the mixed water inlet is larger than that of the contracted water outlet; The water absorption section is connected between the water inlet section and the mixed water outlet section; the contracted water outlet of the water inlet section is close to and faces the mixed water inlet of the mixed water outlet section; the water absorption holes are arranged in the water absorption section, and the water absorption holes communicate with the interval section between the contracted water outlet and the mixed water inlet.

10. A toilet flushing structure according to claim 9, wherein The water absorption holes are at least two and are distributed on the outer periphery between the contracted water outlet and the mixed water inlet.

11. A toilet flushing structure according to claim 9, wherein The water absorption holes adopt a slope towards the outside of the water absorption pipe on the side wall close to the contracted water outlet.

12. A toilet flushing structure according to claim 9, wherein The water inlet section, the mixed water outlet section and the water absorption section are integrally formed; or any two of the water inlet section, the mixed water outlet section and the water absorption section are integrally formed, and the other independent section is butted.

13. The toilet flushing structure according to claim 1, wherein The first water stop cup and the second water stop cup are communicated and share the same water leakage hole or are separately arranged.

14. The toilet flushing structure according to claim 1, wherein The cup opening of the second water stop cup is lower than that of the third water stop cup.

15. A toilet adopting the toilet flushing structure according to any one of claims 1 to 14.

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