Toilet exhausting and flushing system and toilet

Abstract

The utility model belongs to the technical field of bathroom facilities, and discloses a closestool exhausting and flushing system and a closestool. The closestool exhausting and flushing system comprises a flow channel structure, one end of the flow channel structure is provided with an opening and closing port, the flow channel structure is communicated with a water tank of a closestool in a blocking mode through the opening and closing port, and the other end of the flow channel structure is communicated with a urinal of the closestool; the flow channel structure is provided with an exhaust hole, the exhaust hole is located between the opening and closing port and the flow channel water level, and the flow channel water level is the water level when the flow channel structure is blocked from the water tank. When the opening and closing port is closed, a gap exists between the water level of the flow channel structure and the opening and closing port, and an air cavity is formed. When the opening and closing port is opened, water in the water tank enters the flow channel structure through the opening and closing port, air in the cavity is discharged through the exhaust hole under the action of water pressure instead of being discharged through a main punching hole of the urinal, the phenomenon of bubbling in the urinal is avoided during water flushing, the problem of bacteria splashing caused by bubbles can be avoided, and the service life of the urinal is prolonged. The noise during flushing can be reduced to a certain extent, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bathroom facilities, in particular to a toilet exhaust and flushing system and a toilet. Background Art

[0002] The toilet includes a toilet seat, a water tank provided in the toilet seat, and a drainage assembly for drainage and flushing. The water tank can store water to a preset water level. The drainage assembly includes a drain valve, a valve seat, and a flushing pipe. The valve seat is located between the drain valve and the flushing pipe. The drain valve is located in the water tank and is provided on the valve seat. The sealing gasket of the drain valve can open and close the cavity of the valve seat. When opened, water flows through the valve seat and the flushing pipe through the main flushing hole and into the toilet bowl of the toilet seat.

[0003] In toilets in the prior art, there is a gap between the water level of the flush pipe and the sealing gasket of the drain valve, resulting in a cavity in this area. When flushing, the sealing gasket opens the valve seat. Due to the existence of the cavity, the air will be compressed in the flush pipe and can only be discharged through the main flushing hole, resulting in bubbles at the main flushing hole position during flushing. The existence of the bubble air pressure will cause bacteria in the toilet to splash, polluting the surrounding environment, and at the same time generate a lot of noise, affecting the user's experience.

[0004] Therefore, there is an urgent need for a toilet exhaust and flushing system and a toilet to solve the above problems existing in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a toilet exhaust flushing system and a toilet, which can discharge the gas in the waterway in time during flushing, avoid the generation of bubbles during flushing, reduce the impact on the surrounding environment, and reduce flushing noise.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] In one aspect, a toilet exhaust and flushing system is provided, comprising:

[0008] a flow channel structure, wherein one end of the flow channel structure has an opening and closing port, the flow channel structure is configured to be blockably connected to the water tank of the toilet through the opening and closing port, and the other end of the flow channel structure is configured to be connected to the toilet bowl;

[0009] The flow channel structure is provided with an exhaust hole, which is located between the opening and closing port and the flow channel water level. The flow channel water level is the water level when the flow channel structure is blocked from the water tank; the flow channel structure is exhausted through the exhaust hole when connected to the water tank.

[0010] As a preferred solution of the toilet exhaust and flushing system provided by the utility model, the toilet exhaust and flushing system also includes an exhaust structure, one end of the exhaust structure is connected to the interior of the flow channel structure through the exhaust hole, and the opening of the other end of the exhaust structure is not lower than the highest water level in the water tank.

[0011] As a preferred solution of the toilet exhaust and flushing system provided by the utility model, the exhaust structure includes:

[0012] An air guide pipe, one end of which is sealed and connected to the exhaust hole, and the other end of which extends upward in the water tank.

[0013] As a preferred solution of the toilet exhaust and flushing system provided by the utility model, the exhaust structure also includes:

[0014] The exhaust plug is configured to be installed on a fixed part of the toilet, the exhaust plug is connected to one end of the air duct away from the exhaust hole, and the exhaust plug is provided with an air outlet, which is connected to the air duct and is not lower than the highest water level in the water tank.

[0015] As a preferred solution of the toilet exhaust and flushing system provided by the utility model, the exhaust plug includes a plug-in portion, and the plug-in portion is plugged into and matched with the fixing portion;

[0016] And / or, the exhaust plug includes a connecting pipe section, and the connecting pipe section is plugged into and matched with the air guide pipe;

[0017] And / or, the exhaust plug includes an exhaust pipe section, one end of the exhaust pipe section is connected to the air guide pipe, and the other end is opened to form the air outlet.

[0018] As a preferred solution of the toilet exhaust and flushing system provided by the present invention, a first stop protrusion is provided on the outer wall of the connecting pipe section and / or the inner wall of the air guide pipe;

[0019] And / or, the cross-sectional area of the connecting pipe section gradually decreases at the end portion to form a first guide tip.

[0020] As a preferred solution of the toilet exhaust and flushing system provided by the present invention, the flow channel structure is provided with an internally hollow mounting column, the inner cavity of the mounting column is communicated with the exhaust hole, and the mounting column is sealed and plugged into the air guide tube.

[0021] As a preferred solution of the toilet exhaust and flushing system provided by the present invention, a second stop protrusion is provided on the outer wall of the mounting column and / or the inner wall of the air guide pipe;

[0022] And / or, the cross-sectional area of the mounting post gradually decreases at the end to form a second guide tip.

[0023] As a preferred solution of the toilet exhaust and flushing system provided by the present invention, the flow channel structure includes:

[0024] The drain valve seat body is provided with a cavity, one end of the cavity is the opening and closing port, the opening and closing port is configured to be opened or closed under the action of the sealing member of the drain valve of the toilet, and the exhaust hole is provided in the drain valve seat body;

[0025] A flushing pipe, one end of which is connected to the drain valve seat body and communicated with the cavity, and the other end of which is configured to communicate with the toilet bowl.

[0026] On the other hand, a toilet is provided, comprising a toilet seat, a water tank and the toilet exhaust and flushing system as described above, wherein the toilet seat is provided with a toilet bowl, the water tank is arranged in the toilet seat, and the water tank is blockably connected to the main flushing hole of the toilet bowl through the toilet exhaust and flushing system.

[0027] Beneficial effects of the utility model:

[0028] The utility model provides a toilet exhaust and flushing system and a toilet including the exhaust and flushing system. When an opening and closing port is closed, the flow channel structure and the toilet water tank are blocked, and the water tank stops flushing water into the toilet bowl. At this time, there is a gap between the water level of the flow channel structure and the opening and closing port, and a gas-filled cavity is formed between the water level surface and the opening and closing port. When the opening and closing port is opened, water in the water tank can instantly enter the flow channel structure through the opening and closing port. Under the action of water pressure, the air in the cavity is promptly discharged through the exhaust hole rather than the main flushing hole of the toilet bowl. Therefore, no bubbling occurs in the toilet bowl during flushing, thereby avoiding the problem of bacterial splashing caused by bubbles. At the same time, the system can reduce the noise during flushing to a certain extent, improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying any creative work.

[0030] Figure 1 It is a structural diagram of a toilet provided by a specific embodiment of the utility model;

[0031] Figure 2 It is a cross-sectional schematic diagram of a toilet provided by a specific embodiment of the present utility model;

[0032] Figure 3 This is a schematic diagram of the connection between the toilet exhaust and flushing system, the drain valve, and the water inlet valve provided by a specific embodiment of the utility model;

[0033] Figure 4 This is a cross-sectional view of a toilet exhaust and flushing system and a drain valve provided by a specific embodiment of the utility model;

[0034] Figure 5 It is a connection diagram of the exhaust structure provided by a specific embodiment of the utility model;

[0035] Figure 6 It is a structural diagram of a drain valve seat body provided by a specific embodiment of the utility model;

[0036] Figure 7 This is a schematic structural diagram of an exhaust plug of an exhaust structure provided in a specific embodiment of the present utility model;

[0037] Figure 8 It is a schematic diagram of the connection between the exhaust plug and the fixing hole of the drain valve provided in a specific embodiment of the utility model.

[0038] In the picture:

[0039] 1. Flow channel structure; 2. Exhaust structure;

[0040] 11. Drain valve seat; 12. Flush pipe;

[0041] 110, cavity; 111, opening and closing port; 112, exhaust hole; 113, mounting column;

[0042] 1131. Second stop protrusion; 1132. Second guide tip;

[0043] 21. Air guide tube; 22. Exhaust plug;

[0044] 221. Connecting portion; 222. Connecting pipe section; 223. Exhaust pipe section;

[0045] 2211. Third guide tip; 2212. Sealing portion;

[0046] 2221, first stop protrusion; 2222, first guide tip;

[0047] 2231, air outlet;

[0048] 100, toilet seat; 200, water tank; 300, drain valve; 400, water inlet valve;

[0049] 101. Urinal;

[0050] 301, seals;

[0051] 401. Fixing portion; 402. Fixing hole. DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0053] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0054] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0055] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0056] In this embodiment, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this utility model generally indicates that the related objects are in an "or" relationship.

[0057] In the embodiments of the present invention, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted.

[0058] like Figure 1 and Figure 2 As shown, this embodiment provides a toilet comprising a toilet seat 100, a water tank 200, and a toilet exhaust and flushing system. The toilet seat 100 is provided with a toilet bowl 101, and the water tank 200 is disposed within the toilet seat 100. The water tank 200 is in blockable communication with the main flushing hole of the toilet bowl 101 via the toilet exhaust and flushing system. When connected, water in the water tank 200 can be flushed into the toilet bowl 101 through the main flushing hole of the toilet bowl 101. This toilet exhaust and flushing system promptly expels air from the waterway during flushing, preventing bubbles from forming during flushing, minimizing the impact on the surrounding environment, and reducing flushing noise.

[0059] Specifically, if Figure 3 、 Figure 4 and Figure 5 As shown, the toilet exhaust and flushing system provided in this embodiment includes a flow channel structure 1, one end of which has an opening and closing port 111. The flow channel structure 1 is configured to be blockably connected to the toilet water tank 200 through the opening and closing port 111. The other end of the flow channel structure 1 is configured to be connected to the main flushing hole of the toilet bowl 101. In other words, the opening and closing port 111 has a closed state and an open state. When in the closed state, the water tank 200 is blocked from the flow channel structure 1, and when in the open state, the water tank 200 and the flow channel structure 1 can communicate.

[0060] The flow channel structure 1 is provided with an exhaust hole 112, which is located between the opening and closing port 111 and the flow channel water level. The flow channel water level is the water level when the flow channel structure 1 is blocked from the water tank 200; the flow channel structure 1 is exhausted through the exhaust hole 112 when it is connected to the water tank 200.

[0061] In the toilet exhaust and flushing system and toilet provided in the embodiments of the present application, when the opening and closing port 111 is closed, the flow channel structure 1 is blocked from the toilet water tank 200, and the water tank 200 stops flushing water into the toilet bowl 101. At this time, a gap exists between the water level in the flow channel structure 1 and the opening and closing port 111, forming a gas-filled cavity 110 between the water level and the opening and closing port 111. When the opening and closing port 111 is opened, water in the water tank 200 can instantly enter the flow channel structure 1 through the opening and closing port 111. Under the action of the water pressure, the air in the cavity 110 is promptly discharged through the exhaust hole 112, rather than through the main flushing hole of the toilet bowl 101. This prevents bubbling in the toilet bowl 101 during flushing, thereby avoiding the problem of bacterial splashing caused by bubbles. Furthermore, the flushing noise can be reduced to a certain extent, improving the user experience.

[0062] See also Figure 4The dotted line position shown is the water level when the flow channel structure 1 is blocked from the water tank 200. It is lower than the opening and closing port 111, and an air cavity is formed between the opening and closing port 111. The exhaust hole 112 is connected to the air cavity, and the air in the air cavity is discharged in time when flushing.

[0063] Specifically in this embodiment, see Figure 1 、 Figure 3 and Figure 4 The toilet also includes a drain valve 300, located within the water tank 200 and used to control the flow path structure 1. The flow path structure 1 includes a drain valve seat 11 and a flush pipe 12. The drain valve seat 11 is located downstream of the drain valve 300 and defines a cavity 110. One end of the cavity 110 is an opening / closing port 111, which is configured to open or close in response to a seal 301 of the toilet drain valve 300. A vent 112 is provided in the drain valve seat 11. One end of the flush pipe 12 is connected to the drain valve seat 11 and communicates with the cavity 110. The other end of the flush pipe 12 is configured to communicate with the main flushing hole of the toilet bowl 101.

[0064] Reference Figure 4 In the middle position, the upper end of the cavity 110 is the opening and closing port 111, the lower end of the drain valve seat body 11 is connected to the flush pipe 12, and the flush pipe 12 is connected to the main punching hole of the toilet bowl 101. The drain valve 300 is used to control the action of the sealing member 301, which moves upward to open the opening and closing port 111, or moves downward to seal with the sealing surface of the drain valve seat body 11, thereby blocking the opening and closing port 111. Figure 4 As shown by the dashed line, the water level in the flow channel is located at the intersection of the upper end of the flush pipe 12 and the lower end of the drain valve seat 11. The cavity 110 between the seal 301 and the water level in the flow channel is a gas-filled air cavity. In this embodiment, a vent hole 112 is provided in the drain valve seat 11 to ensure that the vent hole 112 is above the water level in the flow channel after the drain valve seat 11 is installed, ensuring that the vent hole 112 can communicate with the gas cavity.

[0065] It is understandable that as long as a drain hole is provided between the downstream of the seal 301 and the water level of the flow channel, exhaust can be achieved during flushing, and it is not limited to providing the exhaust hole 112 on the drain valve seat body 11.

[0066] Exemplarily, the sealing member 301 is a sealing gasket, specifically a sealing rubber gasket.

[0067] In the examples of this application, see Figure 5The toilet venting and flushing system also includes a vent structure 2. One end of the vent structure 2 communicates with the interior of the flow channel structure 1 through a vent hole 112, and the other end of the vent structure 2 opens no lower than the maximum water level in the water tank 200. Typically, the drain valve seat 11 is positioned at the bottom of the water tank 200, with a portion located within the water tank 200 to provide releasable sealing contact with the gasket, and the other portion located below the water tank 200 to facilitate communication with the flushing pipe 12. Therefore, when the vent hole 112 is located on the drain valve seat 11, the vent hole 112 is located relatively low within the water tank 200, hindering gas discharge and causing water in the water tank 200 to flow back through the vent hole 112. By providing the vent structure 2, during flushing, gas within the air cavity can be directed into the vent structure 2 through the vent hole 112 and then discharged through the opening of the vent structure 2. The opening of the vent structure 2 is no lower than the maximum water level in the water tank 200, ensuring smooth gas discharge and preventing water in the water tank 200 from flowing back into the drain valve seat 11 through the vent structure 2. Preferably, the opening of the exhaust structure 2 is higher than the highest water level of the water tank 200 .

[0068] In the embodiment of the present application, the exhaust structure 2 includes an air guide pipe 21, one end of which is sealed and connected to the exhaust hole 112 for discharging the gas in the air cavity through the exhaust hole 112, and the other end of the air guide pipe 21 extends upward in the water tank 200 so that the exhaust direction is upward, thereby leading the gas upward.

[0069] Furthermore, in this embodiment, the exhaust structure 2 further includes an exhaust plug 22, which is configured to be installed on the fixing portion 401 of the toilet (see Figure 8 ), the exhaust plug 22 is connected to the end of the air pipe 21 away from the exhaust hole 112. The exhaust plug 22 is provided with an air outlet 2231, which is in communication with the air pipe 21 and is not lower than the maximum water level in the water tank 200. That is, the exhaust hole 112 is connected to the exhaust plug 22 via the air pipe 21, allowing gas to pass through the air pipe 21 and the exhaust plug 22, and ultimately be discharged through the air outlet 2231 of the exhaust plug 22. In this case, the air outlet 2231 of the exhaust plug 22 serves as the outlet of the exhaust structure 2. The provision of the air pipe 21 facilitates the upward guidance of gas, and the provision of the exhaust plug 22 facilitates the securement of the air pipe 21 within the water tank 200, ensuring stable exhaust during flushing.

[0070] Furthermore, the air guide tube 21 is a hose, which is easy to change its direction and convenient to connect with the exhaust plug 22 and the exhaust hole 112.

[0071] In other embodiments, the vent plug 22 may not be provided, and the air duct 21 may be directly fixed in the water tank 200, with the upper end of the air duct 21 being higher than the highest water level in the water tank 200. For example, the air duct 21 may be tightened with a clamp and fixed to the inner wall of the water tank 200 or other components in the water tank 200.

[0072] See also Figure 1 and Figure 3 The toilet also includes a water inlet valve 400, which is connected to an external pipeline and can control the water storage in the water tank 200. In this embodiment, a fixing portion 401 for fixing the exhaust plug 22 is provided on the water inlet valve 400. More specifically, the fixing portion 401 is provided with a fixing hole 402, into which the exhaust plug 22 is inserted and fixed. The fixing hole 402 is the original water supply hole of the water inlet valve 400, and the water supply hole is located higher than the water level in the water tank 200. In the toilet provided by this embodiment, the original water supply structure is eliminated, but the water supply hole is retained. The exhaust plug 22 can be fixed by using the original structure, eliminating the need for additional structure to fix the exhaust plug 22.

[0073] like Figure 7 and Figure 8 As shown, the exhaust plug 22 includes a plug-in portion 221, a connecting pipe section 222, and an exhaust pipe section 223. The plug-in portion 221 plugs into and mates with the fixing portion 401. Specifically, the plug-in portion 221 is inserted into the fixing hole 402 of the drain valve 300 and has an interference fit with the fixing hole 402, ensuring a secure connection that is not easily dislodged. The connecting pipe section 222 plugs into and mates with the air duct 21, connecting the exhaust plug 22 to the air duct 21. One end of the exhaust pipe section 223 communicates with the air duct 21, and the other end opens into an outlet 2231. Gas in the air duct 21 enters the exhaust plug 22 through the connecting pipe section 222 and is ultimately discharged through the outlet 2231 of the exhaust pipe section 223.

[0074] It is understandable that the exhaust pipe section 223 can extend in any direction relative to the connecting pipe section 222, such as upward or downward, as long as the air outlet 2231 is higher than the water level in the water tank 200. In other words, the air outlet 2231 can be oriented in any direction without limitation.

[0075] The outer wall of the connecting pipe section 222 and / or the inner wall of the air duct 21 are provided with a first stop protrusion 2221 to prevent the connecting pipe section 222 from being disconnected from the air duct 21 after being plugged in. Figure 7 The outer wall of the connecting pipe section 222 is provided with a first retaining protrusion 2221, which effectively prevents the air duct 21 from detaching away from the connecting pipe section 222 after the air duct 21 is inserted into the connecting pipe section 222. Furthermore, the cross-sectional area of the connecting pipe section 222 gradually decreases at the end to form a first guide tip 2222, making it easier for the air duct 21 to be inserted into the connecting pipe section 222, quickly achieving the insertion and fixation of the two. The guiding inclined wall of the first guide tip 2222 is connected to the first retaining protrusion 2221, ensuring a smoother insertion.

[0076] like Figure 3 and Figure 6As shown, the flow channel structure 1 is provided with an internal hollow mounting column 113, the inner cavity of the mounting column 113 is connected to the exhaust hole 112, and the mounting column 113 extends to the outside of the drain valve seat body 11, and is used for sealing and plugging with the air guide pipe 21 to achieve communication between the air guide pipe 21 and the exhaust hole 112, and the plug-in fit can ensure that the connection between the air guide pipe 21 and the drain valve seat body 11 is stable and reliable.

[0077] Of course, in other embodiments, the air guide tube 21 may also be sealed and penetrate the exhaust hole 112 , and the gas in the drain valve seat body 11 may also be discharged through the exhaust hole 112 .

[0078] See also Figure 6 The outer wall of the mounting post 113 and / or the inner wall of the air duct 21 are provided with a second retaining protrusion 1131 to prevent the air duct 21 from disengaging from the mounting post 113 after insertion. Specifically, the outer wall of the mounting post 113 is provided with a second retaining protrusion 1131. After the air duct 21 is mounted on the mounting post 113, it can prevent the air duct 21 from disengaging away from the mounting post 113, thereby improving the stability of the connection. Furthermore, the cross-sectional area of the mounting post 113 gradually decreases at the end to form a second guide tip 1132, making it easier for the air duct 21 to be inserted outside the mounting post 113, and quickly achieving the connection and fixation between the two. The guiding inclined wall surface of the second guide tip 1132 is connected to the second retaining protrusion 1131, making the connection smoother.

[0079] like Figure 7 As shown, the cross-sectional area of the plug-in portion 221 gradually decreases at the end to form a third guide tip 2211, which is convenient for insertion into the fixing hole 402 of the water inlet valve 400. Figure 8 The plug-in part 221 and the connecting pipe section 222 are arranged approximately coaxially, and the exhaust pipe section 223 is arranged approximately perpendicular to the two. When the plug-in part 221 is inserted into the fixing hole 402, when the outer wall of the exhaust pipe section 223 abuts against the opening of the fixing hole 402, it indicates that it is plugged in place.

[0080] Furthermore, a sealing portion 2212 is provided at one end of the plug-in portion 221 close to the exhaust pipe section 223. The diameter of the sealing portion 2212 is larger than the diameter of other positions of the plug-in portion 221, so that the sealing portion 2212 can be interference fit with the fixing hole 402 after insertion to ensure a firm connection.

[0081] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A toilet exhaust and flushing system, characterized in that: include: A flow channel structure (1), wherein one end of the flow channel structure (1) has an opening and closing port (111), the flow channel structure (1) is configured to be blockably connected to a water tank (200) of a toilet through the opening and closing port (111), and the other end of the flow channel structure (1) is configured to be connected to a toilet bowl (101); The flow channel structure (1) is provided with an exhaust hole (112), and the exhaust hole (112) is located between the opening and closing port (111) and the flow channel water level, and the flow channel water level is the water level when the flow channel structure (1) is blocked from the water tank (200); when the flow channel structure (1) is connected to the water tank (200), the exhaust is discharged through the exhaust hole (112).

2. The toilet exhaust and flushing system according to claim 1, characterized in that: The toilet exhaust and flushing system further comprises an exhaust structure (2), one end of the exhaust structure (2) being connected to the interior of the flow channel structure (1) via the exhaust hole (112), and the opening of the other end of the exhaust structure (2) being not lower than the highest water level in the water tank (200).

3. The toilet exhaust and flushing system according to claim 2, characterized in that: The exhaust structure (2) comprises: An air guide pipe (21), one end of the air guide pipe (21) is sealed and connected to the exhaust hole (112), and the other end extends upward in the water tank (200).

4. The toilet exhaust and flushing system according to claim 3, characterized in that: The exhaust structure (2) further comprises: An exhaust plug (22) is configured to be installed on a fixed portion (401) of the toilet, the exhaust plug (22) is connected to an end of the air guide pipe (21) away from the exhaust hole (112), and the exhaust plug (22) is provided with an air outlet (2231), the air outlet (2231) is communicated with the air guide pipe (21) and is not lower than the highest water level in the water tank (200).

5. The toilet exhaust and flushing system according to claim 4, characterized in that: The exhaust plug (22) comprises a plug-in portion (221), and the plug-in portion (221) is plug-fitted with the fixing portion (401); And / or, the exhaust plug (22) includes a connecting pipe section (222), and the connecting pipe section (222) is plugged into and matched with the air guide pipe (21); And / or, the exhaust plug (22) comprises an exhaust pipe section (223), one end of the exhaust pipe section (223) is in communication with the air guide pipe (21), and the other end is opened to form the air outlet (2231).

6. The toilet exhaust and flushing system according to claim 5, characterized in that: The outer wall of the connecting pipe section (222) and / or the inner wall of the air guide pipe (21) are provided with a first stop protrusion (2221); And / or, the cross-sectional area of the connecting pipe section (222) gradually decreases at the end to form a first guide tip (2222).

7. The toilet exhaust and flushing system according to claim 3, characterized in that: The flow channel structure (1) is provided with an internally hollow mounting column (113), the inner cavity of the mounting column (113) is communicated with the exhaust hole (112), and the mounting column (113) is sealed and plugged with the air guide tube (21).

8. The toilet exhaust and flushing system according to claim 7, characterized in that: A second stop protrusion (1131) is provided on the outer wall of the mounting column (113) and / or the inner wall of the air guide tube (21); And / or, the cross-sectional area of the mounting post (113) gradually decreases at the end to form a second guide tip (1132).

9. The toilet exhaust and flushing system according to any one of claims 1 to 8, characterized in that: The flow channel structure (1) comprises: The drain valve seat body (11) is provided with a cavity (110), one end of the cavity (110) is the opening and closing port (111), and the opening and closing port (111) is configured to be opened or closed under the action of the sealing member (301) of the drain valve (300) of the toilet, and the exhaust hole (112) is provided on the drain valve seat body (11); A flushing pipe (12), one end of which is connected to the drain valve seat body (11) and communicates with the cavity (110), and the other end of which is configured to communicate with the toilet bowl (101).

10. A toilet, characterized in that: The toilet comprises a toilet seat (100), a water tank (200), and a toilet exhaust and flushing system according to any one of claims 1 to 9, wherein the toilet seat (100) is provided with a toilet bowl (101), the water tank (200) is arranged on the toilet seat (100), and the water tank (200) is connected to a main flushing hole of the toilet bowl (101) in a blockable manner through the toilet exhaust and flushing system.

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