A suction device

Abstract

The present invention discloses a flushing and suction device, comprising a shell, a cover body and a waste liquid tank which are connected in sequence. A water pump, an air pump and a cleaning liquid tank are arranged in the shell, the waste liquid tank is provided with a nostril connecting end and is arranged on the cover body, and has a nostril connecting end. An external thread is arranged at the lower part of the outer periphery of the cover body, and a buckle and a bayonet are arranged at the upper part, which are connected to the shell through threads. The waste liquid tank, the cover body and the shell are connected in sequence to form a closed accommodating cavity, a water pipe connecting port and an air pipe connecting port are arranged on one side of the cover body, a valve is arranged on the water pipe connecting port, and the valve comprises a water pipe connecting end and a valve sheet located above the water pipe connecting port. The water pump and the air pump are arranged in the shell, one end of the water pump is connected to the water pipe connecting end through a liquid spraying pipe, and the other end of the water pump is connected to the cleaning liquid tank through a liquid suction pipe, one end of the air pump is connected to the air pipe connecting port through an air suction pipe, and the other end of the air pump is connected to the outside through an exhaust pipe, and the switching of the flushing and suction working states is realized through the independent operation of the water pump and the air pump.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a flushing and suction device. Background Art

[0002] Existing electric nasal washers usually have a double-nosed structure. The principle is to use a micro-water pump to pump the nasal wash liquid in the liquid cup to one nasal cavity, and then bypass the nasal septum to flow out from the other nasal cavity to complete the nasal cleaning. However, this type of electric nasal washer has several defects: on the one hand, the nasal wash waste liquid flowing out after cleaning makes the site dirty and inconvenient to clean, causing users to often perform nasal washing in undesirable environments such as sinks and toilets; on the other hand, the pressure-driven water flow impacting the soft palate can easily lead to incomplete closure of the soft palate, and the nasal wash liquid chokes the oropharyngeal passage, causing discomfort such as choking, which may seriously harm the user.

[0003] At present, there are also nasal aspirators that provide alternating positive and negative pressure water discharge and negative pressure suction. For example, CN101674790B is a system and method for nasal irrigation, the principle of which is to use gravity and negative pressure to make the liquid flow into one nostril, and then use an air pump to suck the gas in the outflow bottle, thereby generating negative pressure to suck out the liquid in the nostril and nasal cavity connected to the nozzle.

[0004] CN116725854A discloses an electric nasal irrigator with oral-expiratory sensing, which records another double nasal joint structure. "The electric driving source is used to drive the flow of the irrigating liquid. The electric driving source can be a liquid pump, such as a piston water pump or a diaphragm water pump. The electric driving source can also be a gas pump, such as a positive pressure air pump or a vacuum pump. Alternatively, the electric driving source is a combination of multiple driving sources, such as a combination of a liquid pump and a vacuum pump, or a combination of a positive pressure air pump and a vacuum pump." The irrigating liquid container and the effluent liquid container respectively provide a positive pressure pump, a negative pressure pump, and two sets of pipelines.

[0005] However, there are currently nasal washers with a single nasal connector, which use a water pump to provide positive pressure water flow and an air pump to provide negative pressure suction. Since the single nasal tip requires a pipeline connected to the nasal connector, and is connected to a flushing liquid container and a waste liquid container at the same time, it is necessary to provide a water and air switching valve on the pipeline. The existing valve structure is complex and has poor air tightness, which is prone to water leakage, causing the nasal washer to easily malfunction. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a flushing and suction device with a simple water and air switching valve structure and good sealing effect, which realizes the switching of flushing and suction working states through the independent operation of a water pump and an air pump.

[0007] The present invention adopts the following technical solutions:

[0008] A flushing and suction device comprises a shell, a cover, and a waste liquid tank connected in sequence, wherein a water pump, an air pump, and a cleaning liquid tank are arranged in the shell, and the waste liquid tank is provided with a nostril connection end and arranged on the cover, characterized in that:

[0009] The cover body is provided with a water pipe connection port and an air pipe connection port, the cleaning liquid tank and the water pump in the shell are connected to the water pipe connection port through a water pipe, the other end of the water pipe connection port is connected to the nostril connection end through a waste liquid tank, the air pump is connected to the air pipe connection port through an air pipe, and the other end of the air pipe connection port is connected to the nostril connection end through a waste liquid tank;

[0010] An annular protrusion is formed at the place where the water pipe connection port is set on the cover body, and a valve assembly is provided on the annular protrusion. The valve assembly is a cover body that is sealingly connected to the annular protrusion, and the valve assembly covers the annular protrusion to form a waterway; the water pipe connection port is pressed against the valve assembly cover body, and the valve assembly cover body is provided with a valve sheet that opens elastically at the pressing position.

[0011] Preferably, the water pipe connection port is higher than the annular protrusion and presses against the elastically opened valve plate of the valve assembly.

[0012] Preferably, the valve plate is a sheet-shaped valve plate having an area larger than the water pipe connection port.

[0013] Preferably, the valve assembly and the valve sheet are both made of silicone material, and the valve sheet is a thin sheet with a thickness smaller than that of the valve assembly.

[0014] Preferably, the side of the valve plate facing the water pipe connection port has a raised sealing plug matching the water pipe connection port.

[0015] Preferably, the cover body is further provided with a sealing cover assembled with the valve assembly, and the sealing cover has a large hole through which the water supply pipe connection end extends and a clearance hole for the valve plate to deform.

[0016] Preferably, one end of the water pump is connected to the water pipe connection end through a liquid spray pipe, and the other end of the water pump is connected to the cleaning liquid tank through a liquid suction pipe; one end of the air pump is connected to the air pipe connection port through an air suction pipe, and the other end of the air pump is connected to the outside of the shell through an exhaust pipe.

[0017] Preferably, the nostril connecting end of the waste liquid tank is provided with a liquid inlet end and a liquid outlet end, and one end of the waste liquid tank connecting cover body is provided with a first groove for installing a valve assembly and a water pipe connecting port, and a second groove for installing an air pipe connecting port; the liquid inlet end is connected to the waste liquid tank main body cavity and the second groove, and the first groove is connected to the liquid outlet channel pipeline and the liquid outlet end.

[0018] Preferably, a long tube extends from the second groove, and an air suction end is provided at the end of the long tube.

[0019] Preferably, the liquid inlet end is an annular groove lower than the liquid outlet end.

[0020] Preferably, the liquid inlet is connected to the internal cavity of the waste liquid tank through a channel and a liquid separator, and the liquid separator is provided with at least two liquid outlets.

[0021] Preferably, the air suction end at the end of the long tube is located above the liquid separation component.

[0022] Preferably, the device further comprises a controller, which is electrically connected to the water pump and the air pump, and a switching button electrically connected to the controller is provided on the surface of the shell.

[0023] Preferably, the nostril connecting end is a single nostril.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. The present invention provides a flushing and suction device, comprising a shell, a cover, a water pump, an air pump, a waste liquid tank and a cleaning liquid tank. When flushing, the water pump sprays the cleaning liquid through the liquid suction pipe in sequence through the liquid spray pipe, the water pipe connecting end, the water channel, and the water pipe connecting port; when sucking liquid, the air pump sucks the waste liquid through the air suction pipe and the air pipe connecting port.

[0026] 2. The present invention provides a simple structure of air-water switching structure, which uses an elastic valve to normally close the water pipe. Only when the water pump is working can the valve be pushed open to allow water to flow into the nostrils. When negative pressure suction is required, the air pump can be directly operated without switching the switch to form a negative pressure in the waste liquid tank. The switching of the flushing and suction working states is achieved through the independent operation of the water pump and the air pump. The water and air switching valve has a simple structure and a good sealing effect.

[0027] 3. The liquid inlet end of the waste liquid tank is connected to the liquid separator inside the waste liquid tank through a channel. The liquid separator is provided with at least two nostril connection ends. Since the nasal wash is in an inclined state when in use, as long as one nostril connection end is not covered by waste liquid, no bubbles will be generated, so the generation of bubbles in the waste liquid tank can be reduced. The bursting of bubbles will generate waste liquid. After using the nostril connection end, the generation of bubbles in the waste liquid tank can be reduced, so that the waste liquid does not pollute the inside of the machine. At the same time, the air suction end at the end of the long tube is located above the liquid separator. When the handheld flushing and suction device is operated normally, the air suction end is ensured to be located above the liquid separator to further prevent the waste liquid from directly entering the trachea.

[0028] 4. A switch button electrically connected to the controller is provided on the shell surface, which can control the time and number of flushing and liquid aspiration working states; in addition, the flushing frequency can also be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional diagram of the suction device.

[0030] Figure 2 Schematic diagram of the structure of the cover.

[0031] Figure 3 Schematic diagram of the explosion structure of the cover part.

[0032] Figure 4 Schematic diagram of the explosion structure inside the shell.

[0033] Figure 5 This is a schematic diagram of the structure of the waste liquid tank.

[0034] Figure 6 A cross-sectional view of the waste tank.

[0035] Figure 7 It is a structural schematic diagram of a liquid outlet channel including a liquid outlet end, on which a liquid inlet end, a channel, and a liquid separation member are installed. Part C is a partial cross-sectional view of the liquid inlet end and the channel.

[0036] Figure 8 It is a schematic diagram of the structure of the liquid separation component.

[0037] Fig. 9 It is a cross-sectional view of the liquid dispensing part.

[0038] Fig.10 The invention discloses a cover body of a valve assembly with another structure.

[0039] In the figure, cover body 1, water pipe connection port 1-1, air pipe connection port 1-2, annular protrusion 1-3, water channel 1-4, water pump 2, air pump 3, valve assembly 4, water pipe connection end 4-1, valve plate 4-2;

[0040] Liquid spray pipe 5, liquid suction pipe 6, air suction pipe 7, exhaust pipe 8;

[0041] Waste liquid tank 9, air suction end 9-1, liquid inlet end 9-2, channel 9-3, liquid outlet end 9-4, liquid outlet channel 9-5, first groove 9-6, second groove 9-7, partition 9-8;

[0042] Sealing cover 10, liquid separation member 11, liquid outlet 11-1, liquid inlet 11-2. DETAILED DESCRIPTION

[0043] In order to facilitate the understanding of the technical solution of the present invention, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

[0044] Example 1

[0045] like Figure 1 , Figure 2 , Figure 4As shown, a flushing and suction device includes a shell, a cover 1, and a waste liquid tank 9 connected in sequence. The shell is provided with a water pump 2, an air pump 3, and a cleaning liquid tank. The waste liquid tank 9 is provided with a nostril connection end and is provided on the cover. This embodiment is a single nostril, that is, there is only one nostril connection end. The outer periphery of the cover 1 is provided with an external thread at the bottom, and a buckle and a bayonet are provided at the top, which are connected to the shell through threads. Figure 4 , 5 As shown, the outer periphery of the bottom of the waste liquid tank 9 is provided with a slot and a hook that cooperate with the buckle and the bayonet of the cover body 1, that is, the waste liquid tank 9 is axially inserted into the cover body and fastened and fixed.

[0046] like Figure 2 , Figure 3 , Figure 4 As shown, the cover body 1 is provided with a water pipe connection port 1-1 and an air pipe connection port 1-2. The cleaning liquid tank and the water pump 2 in the shell are connected to one end of the water pipe connection port 1-1 through a water pipe, and the other end of the water pipe connection port 1-1 is connected to the nostril connection end through a waste liquid tank 9. The air pump 3 is connected to one end of the air pipe connection port 1-2 through an air pipe, and the other end of the air pipe connection port 1-2 is connected to the nostril connection end through a waste liquid tank 9. In this embodiment, one end of the water pump 2 is connected to the water pipe connection end 1-1 through a liquid spray pipe 5, and the other end of the water pump 2 is connected to the cleaning liquid tank through a liquid suction pipe 6; one end of the air pump 3 is connected to the air pipe connection port 1-2 through an air suction pipe 7, and the other end of the air pump 3 is connected to the outside of the shell through an exhaust pipe 8. Even if the waste liquid overflows from the waste liquid tank 9, it can flow out of the shell through the exhaust pipe 8.

[0047] like Figure 3 As shown, an annular protrusion 1-3 is formed at the location where the water pipe connection port 1-1 is set on the cover body 1, and a valve assembly 4 is arranged on the annular protrusion 1-3, and the valve assembly 4 is a cover body that is sealed and connected to the annular protrusion 1-3, and the cover body of the valve assembly 4 covers the annular protrusion 1-3, and the cavity between the cover body and the annular protrusion forms a waterway 1-4; the water pipe connection port 1-1 is pressed against the cover body of the valve assembly 4, and the cover body of the valve assembly 4 is provided with an elastically opened valve plate 4-2 at the pressing position. The water pipe connection port 1-1 in this embodiment is higher than the annular protrusion 1-3 and is pressed against the elastically opened valve plate 4-2 of the valve assembly 4. The elastic opening is an elastic diaphragm. When water flows through the water pipe connection port 1-1, the valve plate is bulged by the impact of the water flow and enters the waterway. When there is no water flow, the valve plate is in a normally closed and sealed state due to being pressed against the water pipe connection port 1-1.

[0048] The cover body 1 is also provided with a sealing cover 10 assembled with the cover body of the valve assembly 4, and the sealing cover 10 has a large hole for the water supply pipe connection end 1-1 to extend out and a clearance hole for the valve plate 4-2 to deform. The sealing cover 10 is fixed to the cover body by screws to ensure that the valve assembly will not be displaced or detached by the impact of water flow, resulting in the inability to realize the opening and closing function.

[0049] In another embodiment, the water pipe connection port 1-1 is lower than the annular protrusion 1-3, and the valve assembly 4 cover is embedded in the annular protrusion 1-3, so that the water pipe connection port 1-1 is pressed against the valve plate 4-2.

[0050] In order to ensure that the valve plate 4-2 can be normally closed to shut off the water outlet and can be pushed open under the water pressure of the water pump, the valve plate 4-2 is a sheet-shaped valve plate with an area larger than the water pipe connection port 1-1.

[0051] In one embodiment, the valve assembly 4 and the valve sheet 4-2 are both made of silicone, and the valve sheet 4-2 is a thin sheet with a thickness less than that of the valve assembly. The thin sheet can be integrally formed with the valve assembly, or can be installed as a single piece between the water pipe connection port 1-1 and the valve assembly 4 cover.

[0052] like Figure 3 , Figure 5 , Figure 6 As shown, the nostril connection end of the waste liquid tank 9 is provided with a liquid inlet end 9-2 and a liquid outlet end 9-4, and one end of the waste liquid tank 9 connected to the cover body 1 is provided with a first groove 9-6 for installing the valve assembly 4 and the water pipe connection port 1-1, and a second groove 9-7 for installing the air pipe connection port 1-2. After the first groove 9-6 is assembled with the rubber sealing cover 10, it is divided into an independent groove for installing the valve plate 4-2, and the independent groove is not connected to the groove part for installing the water supply pipe connection end 1-1. The second groove extends with a long tube, and the end of the long tube is provided with an air suction end 9-1. The air pipe connection port 1-2 has a soft ball head, which is sealed and assembled with the second groove 9-7.

[0053] The liquid inlet end 9-2 is an annular groove lower than the liquid outlet end 9-4. In this way, the liquid inlet end 9-2 of the elongated liquid outlet channel 9-5 pipeline can be extended into the nostril, and the annular groove lower than the liquid outlet end 9-4 is sealed against the nostril. The liquid inlet end 9-2 is connected to the waste liquid tank 9 main body cavity and the second groove in sequence, and the first groove is connected to the liquid outlet channel 9-5 pipeline and the liquid outlet end 9-4.

[0054] The flushing and suction device has a first state. In the first state, if Figure 5 In the embodiment, the flushing liquid flows in the direction indicated by the blue dotted arrow A, and the water pump 2 sprays the cleaning liquid through the liquid spray pipe 5, the water pipe connection end 4-1, the water channel 1-4, the water pipe connection port 1-1, the liquid outlet channel 9-5, and the liquid outlet port 9-4 in sequence. That is, in this embodiment, the first state is the flushing state of the flushing and suction device, and the cleaning liquid in the cleaning liquid tank can be sprayed into the nasal cavity for flushing. Among them, after the cleaning liquid passes through the water channel 1-4, the valve plate 4-2 is lifted to make the water channel 1-4 communicate with the water pipe connection port 1-1, so that the cleaning liquid can enter the water pipe connection port 1-1.

[0055] The flushing and suction device has a second state. In the second state, Figure 5In the figure, the waste liquid flows as indicated by the red solid arrow B, the air pump 3 absorbs the waste liquid through the air suction pipe 7, the air pipe connection port 1-2, and the air suction end 9-1, the valve plate 4-2 is sealed on the water pipe connection port 1-1 by the air pressure inside the shell, the water channel 1-4 is not connected to the water pipe connection port 1-1, so that negative pressure is formed in the waste liquid tank 9, and the waste liquid in the nasal cavity enters the waste liquid tank 9 through the liquid inlet end 9-2 and the channel 9-3. That is, in this embodiment, the second state is the liquid suction state of the flushing and aspirating device, which can absorb the waste liquid after cleaning the nasal cavity into the waste liquid tank 9.

[0056] In this embodiment, the water pump 2 and the air pump 3 work independently. When in use, the flushing and aspiration time can be controlled according to the needs of the user. For example, the flushing and aspiration device also includes a controller, which is electrically connected to the water pump 2 and the air pump 3. A switching button electrically connected to the controller is provided on the surface of the shell, and the flushing and aspiration functions can be switched by the switching button. In addition, the water pump 2 has a diaphragm pump, and an adjustment button is also provided on the surface of the shell. The adjustment button can adjust the frequency of the diaphragm pump through the controller to achieve the amount and state of the sprayed cleaning liquid. For example, by adjusting the frequency of the diaphragm pump, the cleaning liquid is released in the form of atomization, which can reach the sinus area for cleaning.

[0057] In addition, some users have dry nasal cavities, and the mucus and other substances in the nasal cavity have dried and hardened, and need to be softened with cleaning liquid or atomized cleaning liquid before being sucked out through the suction function. Or there is a lot of mucus in the nasal cavity, and the mucus needs to be sucked out through the suction function before the flushing function. The above can be achieved by switching the flushing and suction functions of the flushing and suction device.

[0058] In addition, in order to improve the sealing effect of the flushing and suction device, sealing structures can be provided at both ends of the water pump 2 and the air pump 3 and at each interface.

[0059] This embodiment is a single-nostril nostril connection end, and its use method is: one nostril connection end is used to block the nostril, and the other nostril is pressed by hand, and the water pump is turned on to work in a positive pressure mode to wash the nasal cavity. Then, the air pump is turned on to suck, so that the liquid in the nasal cavity enters the waste liquid tank through negative pressure.

[0060] Example 2

[0061] This embodiment provides a liquid inlet channel, such as Figure 7-Figure 9 As shown, Figure 7 The figure is a schematic diagram of the structure of the liquid outlet channel including the liquid outlet, on which the liquid inlet, channel and liquid separator are installed, and part C is a partial cross-sectional view of the liquid inlet and channel. The liquid inlet 9-2 is connected to the internal cavity of the waste liquid tank 9 through the channel 9-3 and the liquid separator 11, and the liquid separator 11 is provided with two nostril connection ends 11-1. The air suction end 9-1 at the end of the long tube is located above the liquid separator 11.

[0062] The waste liquid tank 9 has a liquid separator 11 inside, which is connected to one end of the channel 9-3. The liquid separator 11 has a liquid inlet 11-2 and two symmetrically arranged liquid outlets 11-1. The liquid inlet 11-2 is connected to the two liquid outlets 11-1, and the liquid outlets 11-1 are used to discharge the waste liquid into the waste liquid tank 9. When in use, the liquid inlet end 9-2 is located in the nasal cavity, and the air pump 3 works to inhale air, which can suck the waste liquid in the nasal cavity into the waste liquid tank 9 through the liquid inlet end 9-2, the channel 9-3, the liquid inlet 11-2, and the liquid outlet 11-1 in sequence through negative pressure. Since the nasal washer is not used horizontally, the two liquid outlets 11-1 will inevitably have one high and one low. Once the waste liquid level is higher than the lower liquid outlet 11-1, the waste liquid can be discharged from the higher liquid outlet 11-1 to prevent air from mixing with the waste liquid to produce bubbles. Once the waste liquid tank 9 is about to be full of waste liquid or the waste liquid is about to submerge the air intake end 9 - 1 , the waste liquid tank 9 needs to be cleaned or replaced.

[0063] In fact, different numbers and heights of the liquid outlets 11 - 1 can be provided as required. As long as one of the liquid outlets 11 - 1 is not covered by the waste liquid, no bubbles will be generated.

[0064] The liquid outlet 11 - 1 is disposed obliquely upward to further reduce the possibility of bubble generation.

[0065] The air intake end 9 - 1 is located above the liquid outlet 11 - 1 , that is, the position of the air intake end 9 - 1 is higher than the position of the liquid outlet 11 - 1 , which can reduce the possibility of waste liquid entering from the air intake end 9 - 1 and increase the service life of the waste liquid tank 9 .

[0066] The waste liquid tank 9 is provided with a partition 9-8 located above the liquid outlet 11-1. The waste liquid tank 9 is divided into layers by the partition 9-8. Only when the lower layer of the waste liquid tank 9 is full of waste liquid can the waste liquid enter the upper layer, thereby increasing the service life of the waste liquid tank 9.

[0067] Example 3

[0068] like Fig.10 The valve assembly structure of another structure is shown in FIG. The valve plate 4-2 has a sealing plug 4-3 matching the water pipe connection port 1-1 on one side thereof, so as to improve the sealing effect between the sealing plug 4-3 and the water pipe connection port 1-1.

[0069] In the first state, the water pump 2 sprays the cleaning liquid through the liquid suction pipe 6 in sequence through the liquid spray pipe 5, the water pipe connection end 4-1, the water channel 1-4, the water pipe connection port 1-1, the liquid outlet channel 9-5, and the liquid outlet port 9-4. That is, in this embodiment, the first state is the flushing state of the flushing and suction device, and the cleaning liquid in the cleaning liquid tank can be sprayed into the nasal cavity for flushing. Among them, after the cleaning liquid passes through the water channel 1-4, it generates a thrust on the sealing part 4-3, thereby lifting the valve plate 4-2 so that the water channel 1-4 is connected with the water pipe connection port 1-1, so that the cleaning liquid can enter the water pipe connection port 1-1.

[0070] In the second state, the air pump 3 absorbs waste liquid through the air suction pipe 7, the air pipe connection port 1-2, and the air suction end 9-1, and the valve plate 4-2 is sealed on the water pipe connection port 1-1 through the sealing portion 4-3 under the air pressure inside the shell, and the water channel 1-4 is not connected to the water pipe connection port 1-1, so that negative pressure is formed in the waste liquid tank 9, and the waste liquid in the nasal cavity enters the waste liquid tank 9 through the liquid inlet end 9-2 and the channel 9-3. That is, in this embodiment, the second state is the liquid suction state of the flushing and aspirating device, which can suck the waste liquid after washing in the nasal cavity into the waste liquid tank 9.

[0071] Embodiment 4:

[0072] This embodiment provides another structure of the valve assembly 4. An annular groove is formed at the location where the water pipe connection port 1-1 is provided on the cover body 1, on which a valve assembly 4 is provided. The valve assembly 4 is an annular cover that is sealed and connected to the annular groove. The valve assembly 4 covers the annular groove, and the cavity between the two forms a waterway 1-4; the water pipe connection port 1-1 is pressed against the annular cover of the valve assembly 4, and the annular cover of the valve assembly 4 is provided with a valve sheet 4-2 that is elastically opened at the pressing location.

[0073] The above are only preferred embodiments of the present invention. The protection scope of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A flushing and suction device, comprising a housing, a cover (1), and a waste liquid tank (9) connected in sequence, wherein a water pump (2), an air pump (3), and a cleaning liquid tank are provided in the housing, wherein the waste liquid tank (9) is provided with a nostril connection end, characterized in that: The cover body (1) is provided with a water pipe connection port (1-1) and an air pipe connection port (1-2); the cleaning liquid tank and the water pump (2) in the shell are connected to one end of the water pipe connection port (1-1) through a water pipe, and the other end of the water pipe connection port (1-1) is connected to the nostril connection end through a waste liquid tank (9); the air pump (3) is connected to one end of the air pipe connection port (1-2) through an air pipe, and the other end of the air pipe connection port (1-2) is connected to the nostril connection end through a waste liquid tank (9); an annular protrusion (1-3) or an annular groove is formed at the location where the water pipe connection port (1-1) is provided on the cover body (1); a valve assembly (4) is provided on the annular protrusion (1-3) or the annular groove; the valve assembly (4) is a cover body sealedly connected to the annular protrusion (1-3) or an annular cover sealedly connected to the annular groove; the valve assembly (4) covers the annular protrusion (1-3) or the annular groove to form a water channel (1-4); the water pipe connection port (1-1) is pressed against the cover body or annular cover of the valve assembly (4), and the cover body or annular cover of the valve assembly (4) is provided with a valve sheet (4-2) that is elastically opened at the pressing position; the nostril connection end of the waste liquid tank (9) is provided with a liquid inlet end (9-2) and a liquid outlet end (9-4), and one end of the waste liquid tank (9) connected to the cover body (1) is provided with a first groove for mounting the valve assembly (4) and the water pipe connection port (1-1), and a second groove for mounting the air pipe connection port (1-2); the liquid inlet end (9-2) is connected to the waste liquid tank (9) main body cavity and the second groove, and the first groove is connected to the liquid outlet channel (9-5) pipeline and the liquid outlet end (9-4); the liquid inlet end (9-2) is connected to the internal cavity of the waste liquid tank (9) through the channel (9-3) and the liquid separator (11), and the liquid separator (11) is provided with at least two liquid outlets (11-1).

2. A flushing and suction device according to claim 1, characterized in that: The water pipe connection port (1-1) is higher than the annular protrusion (1-3) and presses against the elastically opened valve plate (4-2) of the valve assembly (4).

3. A flushing and suction device according to claim 1, characterized in that: The valve plate (4-2) is a sheet-shaped valve plate having an area larger than the water pipe connection port (1-1).

4. A flushing and suction device according to claim 3, characterized in that: The valve assembly (4) and the valve sheet (4-2) are both made of silicone material; the valve sheet (4-2) is a thin sheet with a thickness smaller than that of the valve assembly.

5. A flushing and suction device according to claim 1 or 3, characterized in that: The side of the valve plate (4-2) facing the water pipe connection port (1-1) is provided with a raised sealing plug (4-3) matching the water pipe connection port (1-1).

6. The flushing and suction device according to claim 1, characterized in that: The cover body (1) is also provided with a sealing cover (10) assembled with the valve assembly (4), and the sealing cover (10) has a large hole through which the water supply pipe connection end (4-1) protrudes, and a clearance hole for the valve plate (4-2) to deform.

7. The flushing and suction device according to claim 1, characterized in that: One end of the water pump (2) is connected to the water pipe connection port (1-1) via a liquid spray pipe (5), and the other end of the water pump (2) is connected to the cleaning liquid tank via a liquid suction pipe (6); one end of the air pump (3) is connected to the air pipe connection port (1-2) via an air suction pipe (7), and the other end of the air pump (3) is connected to the outside of the housing via an exhaust pipe (8).

8. The flushing and suction device according to claim 1, characterized in that: A long tube extends from the second groove, and an air suction end (9-1) is provided at the end of the long tube.

9. The flushing and suction device according to claim 1, characterized in that: The liquid inlet end (9-2) is an annular groove lower than the liquid outlet end (9-4).

10. The flushing and suction device according to claim 8, characterized in that: The air suction end (9-1) at the end of the long tube is located above the liquid separation component (11).

11. The flushing and suction device according to claim 1, characterized in that: It also includes a controller, the controller is electrically connected to the water pump (2) and the air pump (3), and a switching button electrically connected to the controller is provided on the surface of the shell.

12. The flushing and suction device according to claim 1, characterized in that: The nostril connecting end is a single nostril.

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