Pressure-adjustable positive and negative pressure nasal washing device

Abstract

This utility model provides a pressure-adjustable positive and negative pressure nasal irrigator, including a storage tank, a drive assembly, and a nasal irrigation assembly: the storage tank has an opening at the top, and a storage cap is provided at the opening; the storage tank is divided in the middle to form two chambers, either left and right or front and back, which are a clean liquid chamber and a waste liquid chamber; the drive assembly includes a base and a top cover, with the top cover covering the base and forming a receiving cavity with the base; the receiving cavity contains a pneumatic drive mechanism, which includes an air pump and a pressure regulating valve, the pressure regulating valve being used to control the pressure output by the air pump; the pressurizing end of the air pump is connected to the clean liquid chamber, and the vacuuming end of the air pump is connected to the waste liquid chamber; the base is provided with an outlet pipe and a return pipe, one end of the outlet pipe is connected to the clean liquid chamber, and the other end of the outlet pipe is connected to the outlet of the nasal irrigation assembly, one end of the return pipe is connected to the waste liquid chamber, and the other end of the return pipe is connected to the inlet of the nasal irrigation assembly, the pressure of the nasal irrigation solution injected into the nasal cavity is controlled by adjusting the pressure output by the air pump through the pressure regulating valve.

Description

Technical Field

[0001] This utility model relates to nasal irrigator equipment, and more particularly to a positive and negative pressure nasal irrigator with adjustable pressure. Background Technology

[0002] A nasal irrigator is a tool used to clean the nasal cavity. It typically uses pressure (either a bag-type nasal irrigator, a simple bottle-type irrigator using gravity, or a mechanical pressure such as an electric one) to deliver saline solution into the nostrils. The solution flows through the nasal vestibule (the part exposed outside the head), sinuses, and nasal passages, bypassing the nasopharynx, and exiting either through one nostril or the mouth. Through this pathway, the saline solution itself, along with the force of the water flow, removes accumulated pathogens and impurities from the nasal cavity, restoring its normal physiological environment and self-detoxification function, thus protecting the nasal cavity.

[0003] For example, prior art document (application publication number CN221888712U) discloses a positive and negative pressure nasal irrigator, which specifically discloses a liquid storage tank, an opening at the top of the liquid storage tank divided into a clean liquid section and a waste liquid section by a partition structure, a liquid storage cap, a liquid storage cap covering the opening of the liquid storage tank, a clean liquid outlet communicating with the clean liquid section, and a waste liquid outlet communicating with the waste liquid section, a base, a base disposed on the liquid storage cap, a top cover, a top cover, and the top cover covering the base, forming a receiving cavity with the base, a nasal irrigation mechanism, one end of the nasal irrigation mechanism passing through the top cover and disposed in the receiving cavity, the outlet of the nasal irrigation mechanism communicating with the clean liquid outlet, the inlet communicating with the waste liquid outlet, and a pneumatic drive mechanism, the blowing and pressurizing end of the pneumatic drive mechanism communicating with the clean liquid outlet, and the suction and vacuuming end of the pneumatic drive mechanism communicating with the waste liquid outlet. Activating the pneumatic drive mechanism pressurizes the clean liquid section, thereby providing power to spray out the cleaning liquid. On the other hand, it can perform a vacuuming operation on the waste liquid section, thereby providing power to absorb the waste liquid into the waste liquid section.

[0004] The aforementioned comparative document can achieve nasal cavity cleaning using negative pressure, but it cannot adjust the pressure of the nasal wash solution injected into the nasal cavity. Different users (children, adults, and the elderly, etc.) will have different injection pressures and different cleaning effects during use. If the pressure is too high, the washing solution will rush into the nasal cavity, which may damage the nasal membrane; if the squeezing pressure is too low, the cleaning will not be thorough enough, and the cleaning effect will be unsatisfactory. Utility Model Content

[0005] The main technical problem to be solved by this utility model is to provide a nasal irrigator with adjustable positive and negative pressure, which can adjust the pressure of the nasal irrigation solution injected into the nasal cavity to suit the use of different users.

[0006] To address the aforementioned technical problems, this utility model provides a pressure-adjustable positive and negative pressure nasal irrigator, comprising a liquid reservoir, a drive assembly, and a nasal irrigation assembly:

[0007] The upper end of the storage tank is open, and a storage cap is provided at the opening; the storage tank is divided in the middle to form two chambers, either left and right or front and back, and the two chambers are a clean liquid chamber and a waste liquid chamber.

[0008] The drive assembly includes a base and a top cover. The top cover is disposed on the base and forms a receiving cavity with the base. The receiving cavity contains a pneumatic drive mechanism, which includes an air pump and a pressure regulating valve. The pressure regulating valve is used to control the pressure output by the air pump.

[0009] The pressurizing end of the air pump is connected to the clean liquid chamber, and the vacuuming end of the air pump is connected to the waste liquid chamber; the base is provided with an outlet pipe and a return pipe, one end of the outlet pipe is connected to the clean liquid chamber, the other end of the outlet pipe is connected to the outlet of the nasal irrigation component, one end of the return pipe is connected to the waste liquid chamber, and the other end of the return pipe is connected to the inlet of the nasal irrigation component.

[0010] In a preferred embodiment, the base is provided with a first channel and a second channel, the first channel being connected to the pressurizing end and the second channel being connected to the vacuuming end;

[0011] The liquid storage cap is provided with a first through hole and a second through hole. The first channel passes through the first through hole and communicates with the clean liquid chamber, and the second channel passes through the second through hole and communicates with the waste liquid chamber.

[0012] In a preferred embodiment, the liquid storage cap is provided with a clean liquid outlet and a waste liquid outlet, and the base is provided with a third channel and a fourth channel;

[0013] The third channel includes a first connecting end and a second connecting end, the first connecting end being connected to the liquid outlet pipe, and the second connecting end passing through the clean liquid outlet and being connected to the clean liquid chamber.

[0014] The fourth channel includes a third connection end and a fourth connection end. The third connection end is connected to the return pipe, and the fourth connection end passes through the waste liquid outlet and is connected to the waste liquid chamber.

[0015] In a preferred embodiment, the clean liquid outlet and the waste liquid outlet are respectively provided with a first annular protrusion and a second annular protrusion; the bottom surface of the base is respectively provided with a first recess and a second recess around the second connecting end and the fourth connecting end; the first annular protrusion and the second annular protrusion respectively cooperate with the first recess and the second recess.

[0016] In a preferred embodiment, the second connection end is connected to a water pipe, the water pipe is placed inside the clean liquid chamber, and the bottom of the water pipe is close to the bottom of the clean liquid chamber.

[0017] In a preferred embodiment, the nasal irrigation assembly includes a nasal irrigation base, a liquid guide base, and a connecting base. The connecting base includes a first interface and a second interface. The first interface is connected to the liquid outlet tube, and the second interface is connected to the liquid return tube.

[0018] The liquid guide seat is rotatably mounted on the connecting seat, and the nasal irrigation seat is mounted on the top of the liquid guide seat.

[0019] In a preferred embodiment, the connector is provided with a first chamber and a second chamber, the first chamber being connected to the first interface and the second chamber being connected to the second interface;

[0020] The liquid guide seat includes a first liquid guide channel and a second liquid guide channel, wherein the first liquid guide channel is connected to the first chamber and the second liquid guide channel is connected to the second chamber;

[0021] The nasal irrigation device includes a first nasal tube and a second nasal tube. The first nasal tube includes the liquid outlet, and the second nasal tube includes the liquid inlet. The first nasal tube is connected to the first liquid channel, and the second nasal tube is connected to the second liquid channel.

[0022] In a preferred embodiment, the connecting seat is provided with a cavity for containing liquid, and the cavity is divided into a first chamber and a second chamber by an annular dividing structure;

[0023] The first chamber is formed on the inner side of the annular segmented structure, and the second chamber is formed between the outer wall of the annular segmented structure and the inner wall of the cavity.

[0024] In a preferred embodiment, the bottom of the liquid guide seat is provided with an annular protrusion, the first liquid guide channel is disposed inside the annular protrusion, and the second liquid guide channel is disposed outside the annular protrusion;

[0025] After the liquid guide seat and the connecting seat are assembled, the annular protrusion is inserted into the first cavity.

[0026] In a preferred embodiment, the pneumatic drive mechanism further includes a battery assembly and a power switch, wherein the battery assembly is electrically connected to the power switch, the air pump, and the pressure regulating valve;

[0027] The power switch is mounted on the upper cover, and the operating surface of the power switch is exposed on the upper cover;

[0028] The base has a battery mounting cavity, and the bottom surface of the base has a removable battery cover plate, which covers the opening of the battery mounting cavity, and the battery assembly is assembled inside the battery mounting cavity.

[0029] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0030] 1. By setting a pressure regulating valve, the pressure output of the air pump can be adjusted, thereby controlling the pressure of the nasal wash solution injected into the nasal cavity, adapting to the needs of different users, improving the cleaning effect, and avoiding damage to the nasal membrane.

[0031] 2. The storage tank is divided into two chambers, forming a clean liquid chamber and a waste liquid chamber, achieving physical isolation between the cleaning liquid and the waste liquid. This design effectively avoids cross-contamination between the cleaning liquid and the waste liquid. The clean liquid chamber and the waste liquid chamber are separate, allowing users to clean each chamber independently, preventing the mixing of cleaning liquid and waste liquid during the cleaning process and improving the convenience and efficiency of cleaning.

[0032] 3. The nasal irrigator integrates an air pump and a pressure regulating valve. This design simplifies the internal structure of the nasal irrigator, reduces the number of parts, and thus lowers production costs and maintenance difficulty.

[0033] 4. The design using an air pump and a pressure regulating valve not only enables positive and negative pressure functions, but also allows for precise pressure adjustment to meet the needs of different users, improve comfort and safety, optimize cleaning results, simplify the structure, reduce costs, improve operational convenience, adapt to various usage scenarios, reduce resource waste, enhance user experience, and facilitate maintenance and cleaning, thereby significantly improving the overall performance and market competitiveness of the product. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the positive and negative pressure nasal irrigator in a preferred embodiment of the present invention;

[0035] Figure 2 This is a structural diagram of the positive and negative pressure nasal irrigator in a preferred embodiment of the present invention, showing the lower liquid storage and upper nasal irrigation functions.

[0036] Figure 3 This is an exploded view of the components of the liquid storage tank in a preferred embodiment of the present invention;

[0037] Figure 4 This is an exploded view of the components of the drive assembly and nasal irrigation assembly in a preferred embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of the base bottom structure in a preferred embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the front structure of the base in a preferred embodiment of the present invention;

[0040] Figure 7This is a schematic diagram of the connecting seat in the nasal irrigation assembly in a preferred embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram showing the connection of the channels for liquid output and return in the nasal irrigation component in a preferred embodiment of this utility model;

[0042] Figure 9 This is a cross-sectional view showing the connection between the nasal irrigator's clean liquid chamber and the nasal irrigator assembly in a preferred embodiment of this utility model.

[0043] Figure 10 This is a cross-sectional view showing the connection between the waste liquid chamber of the nasal irrigator and the nasal irrigation assembly in a preferred embodiment of this utility model.

[0044] Explanation of reference numerals in the attached drawings: 1. Storage tank; 11. Opening; 12. Storage cap; 121. First through hole; 122. Second through hole; 123. Clean liquid outlet; 1231. First annular protrusion; 124. Waste liquid outlet; 1241. Second annular protrusion; 13. Clean liquid chamber; 131. Water pipe; 14. Waste liquid chamber; 15. First sealing ring; 16. Second sealing ring; 2. Drive assembly; 21. Base; 211. Outlet pipe; 212. Return pipe; 213. First channel; 214. Second channel; 215. Third channel; 2151. First connecting end; 2152. Second connecting end; 216. Fourth channel; 2161. Third connecting end; 2162. Fourth connecting end; 21 7. First recess; 218. Second recess; 219. Battery cover; 22. Top cover; 23. Pneumatic drive mechanism; 231. Air pump; 232. Pressure regulating valve; 233. Battery assembly; 234. Power switch; 3. Nasal irrigation assembly; 31. Liquid outlet; 32. Liquid inlet; 33. Nasal irrigation seat; 331. First nasal tube; 332. Second nasal tube; 34. Liquid guide seat; 341. First liquid guide channel; 342. Second liquid guide channel; 343. Annular protrusion; 35. Connecting seat; 351. First interface; 352. Second interface; 353. First chamber; 3531. First notch; 354. Second chamber; 3541. Second notch; 355. Annular segmented structure. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0046] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0048] refer to Figures 1-10 This embodiment provides a pressure-adjustable positive and negative pressure nasal irrigator, including a liquid storage tank 1, a drive assembly 2, and a nasal irrigation assembly 3. The specific structure is as follows:

[0049] like Figure 2-3 The liquid tank has an opening 11 at its upper end, and a liquid storage cap 12 is provided at the opening 11; the liquid storage tank 1 is divided in the middle to form two chambers, either left and right or front and back. In this embodiment, the left and right chambers are taken as an example (e.g., Figure 3 The two chambers are divided into a clean liquid chamber 13 and a waste liquid chamber 14. Dividing the storage tank 1 into two chambers optimizes space utilization, making the entire nasal irrigator more compact and easier to carry and store. The clean liquid chamber 13 is specifically for storing the cleansing solution, while the waste liquid chamber 14 is for collecting the waste liquid after use. This separation design allows the cleansing solution to enter the nasal cavity more smoothly and the waste liquid to be discharged more effectively, thereby improving the efficiency and effectiveness of nasal irrigation.

[0050] like Figure 4 The drive assembly 2 includes a base 21 and a top cover 22. The top cover 22 covers the base 21 and forms a receiving cavity with the base 21. The receiving cavity houses a pneumatic drive mechanism 23, which includes an air pump 231 and a pressure regulating valve 232 (e.g., ...). Figure 6The pressure regulating valve 232 is used to control the pressure output by the air pump 231. By setting the pressure regulating valve 232, the pressure output by the air pump 231 can be adjusted, thereby controlling the pressure of the nasal wash solution injected into the nasal cavity, adapting to the usage needs of different users, improving the cleaning effect, and avoiding damage to the nasal membrane.

[0051] like Figure 4-6 The pressurizing end of the air pump 231 is connected to the clean liquid chamber 13, and the vacuuming end of the air pump 231 is connected to the waste liquid chamber 14. The base 21 is provided with an outlet pipe 211 and a return pipe 212. One end of the outlet pipe 211 is connected to the clean liquid chamber 13, and the other end of the outlet pipe 211 is connected to the outlet 31 of the nasal irrigation component 3. One end of the return pipe 212 is connected to the waste liquid chamber 14, and the other end of the return pipe 212 is connected to the inlet 32 ​​of the nasal irrigation component 3.

[0052] During nasal irrigation, the outlet 31 and inlet 32 ​​correspond to the two nostrils of the human body, respectively. When using the positive and negative pressure nasal irrigator, in positive pressure mode, the pressure regulating valve 232 adjusts the pressure of the nasal irrigation solution injected into the nasal cavity. In positive pressure mode, the air pump 231 compresses air and sends it into the clean liquid chamber 13, increasing the pressure inside the clean liquid chamber 13, thereby pushing the nasal irrigation solution through the outlet tube 211 and into the nasal cavity through the outlet 31 of the nasal irrigation component 3 (e.g., ...). Figure 9 During negative pressure aspiration, in negative pressure mode, the air pump 231 creates negative pressure in the waste liquid chamber 14 by suction, and the waste liquid in the nasal cavity is drawn into the waste liquid chamber 14 through the liquid inlet 32 ​​of the nasal irrigation component 3 (e.g., Figure 10 ).

[0053] In this embodiment, the base 21 is provided with a first channel 213 and a second channel 214 (e.g., Figure 5 The first channel 213 is connected to the pressurization end, and the second channel 214 is connected to the vacuuming end; the liquid storage cap 12 is provided with a first through hole 121 and a second through hole 122 (e.g., Figure 2 The first channel 213 passes through the first through hole 121 and communicates with the clean liquid chamber 13, and the second channel 214 passes through the second through hole 122 and communicates with the waste liquid chamber 14. By setting the first channel 213 and the second channel 214, as well as the corresponding first through hole 121 and second through hole 122, and by setting the second sealing ring 16 between the channel and the through hole, the pressurization end and the vacuuming end of the air pump 231 are connected to the clean liquid chamber 13 and the waste liquid chamber 14, which improves airtightness, has a simple structure, and a reliable connection.

[0054] In this embodiment, the liquid storage cap 12 is provided with a clean liquid outlet 123 and a waste liquid outlet 124 (e.g., ...). Figure 2The base 21 is provided with a third channel 215 and a fourth channel 216; the third channel 215 includes a first connecting end 2151 and a second connecting end 2152, the first connecting end 2151 is connected to the liquid outlet pipe 211, and the second connecting end 2152 passes through the clean liquid port 123 and is connected to the clean liquid chamber 13 (e.g., Figure 9 The fourth channel 216 includes a third connecting end 2161 and a fourth connecting end 2162. The third connecting end 2161 is connected to the return pipe 212, and the fourth connecting end 2162 passes through the waste liquid outlet 124 and is connected to the waste liquid chamber 14 (e.g., Figure 10 By setting up the clean liquid outlet 123, the waste liquid outlet 124, and the third channel 215 and the fourth channel 216, the flow path of the liquid is further optimized, the liquid delivery efficiency is improved, and it is ensured that the nasal rinse solution can flow smoothly from the clean liquid chamber 13 to the nasal rinse assembly 3, and the waste liquid can flow smoothly from the nasal rinse assembly 3 to the waste liquid chamber 14.

[0055] In this embodiment, the clean liquid outlet 123 and the waste liquid outlet 124 are respectively provided with a first annular protrusion 1231 and a second annular protrusion 1241 (e.g., Figure 3 The bottom surface of the base 21 is provided with a first recess 217 and a second recess 218 surrounding the second connecting end 2152 and the fourth connecting end 2162, respectively. Figure 5 The first annular protrusion 1231 and the second annular protrusion 1241 respectively cooperate with the first recess 217 and the second recess 218. When the base 21 is installed on the liquid storage cap 12, the protrusions and recesses engage with each other to form a positioning installation. A first sealing ring 15 is provided between the recesses and protrusions to form a sealed connection. By setting the cooperation between the annular protrusions and recesses, the sealing between the liquid storage cap 12 and the base 21 is enhanced, preventing liquid leakage and improving the safety of the nasal irrigator.

[0056] In this embodiment, the second connection end 2152 is connected to a water pipe 131 (e.g., Figure 3 The water pipe 131 is placed inside the clean liquid chamber 13, with the bottom of the water pipe 131 close to the bottom of the clean liquid chamber 13 (e.g., Figure 9 The water pipe 131 allows the nasal rinse solution to be drawn out from the bottom of the cleansing chamber 13, ensuring full utilization of the nasal rinse solution and preventing excessive residue of nasal rinse solution in the cleansing chamber 13.

[0057] In this embodiment, the nasal irrigation assembly 3 includes a nasal irrigation base 33, a fluid guide base 34, and a connecting base 35 (e.g., ...). Figure 4The connecting seat 35 includes a first interface 351 and a second interface 352. The first interface 351 is connected to the liquid outlet pipe 211, and the second interface 352 is connected to the liquid return pipe 212. The liquid guide seat 34 is rotatably mounted on the connecting seat 35, and the nasal irrigation seat 33 is mounted on the top of the liquid guide seat 34.

[0058] like Figure 8 The connecting seat 35 is provided with a first chamber 353 and a second chamber 354. The first chamber 353 is connected to the first interface 351, and the second chamber 354 is connected to the second interface 352. The liquid guiding seat 34 includes a first liquid guiding channel 341 and a second liquid guiding channel 342. The first liquid guiding channel 341 is connected to the first chamber 353, and the second liquid guiding channel 342 is connected to the second chamber 354. The nasal irrigation seat 33 includes a first nasal tube 331 and a second nasal tube 332. The first nasal tube 331 is connected to the first liquid guiding channel 341, and the second nasal tube 332 is connected to the second liquid guiding channel 342. This structural design allows the nasal irrigation solution to enter the nasal cavity through the first nasal tube 331 and the waste solution to be discharged through the second nasal tube 332, realizing unidirectional flow of the nasal irrigation solution, improving the cleaning effect, and avoiding the mixing of nasal irrigation solution and waste solution.

[0059] like Figure 7 The connecting seat 35 has a cavity for containing liquid. This cavity is divided into a first chamber 353 and a second chamber 354 by an annular dividing structure 355. The first chamber 353 is formed on the inner side of the annular dividing structure 355, and the second chamber 354 is formed between the outer wall of the annular dividing structure 355 and the inner wall of the cavity. The first chamber 353 has a first notch 3531 for communicating with a first interface 351, and the second chamber 354 has a second notch 3541 for communicating with a second interface 352. Figure 8 The bottom of the liquid guide seat 34 is provided with an annular protrusion 343. The first liquid guide channel 341 is disposed inside the annular protrusion 343, and the second liquid guide channel 342 is disposed outside the annular protrusion 343. After the liquid guide seat 34 is assembled with the connecting seat 35, the annular protrusion 343 is inserted into the first chamber 353. This structural design allows the first nasal tube 331 and the second nasal tube 332 to be interchanged left and right when the liquid guide seat 34 rotates relative to the connecting seat 35, facilitating cleaning of the left and right nostrils, while also ensuring the unobstructed flow of the liquid guide channel and the return channel when the left and right sides are interchanged.

[0060] In this embodiment, the pneumatic drive mechanism 23 further includes a battery assembly 233 and a power switch 234. The battery assembly is electrically connected to the power switch 234, the air pump 231, and the pressure regulating valve 232. The power switch 234 is mounted on the upper cover 22, and the operating surface of the power switch 234 is exposed on the upper cover 22 (e.g., Figure 1 The base 21 is provided with a battery mounting cavity, and the bottom surface of the base 21 is provided with a removable battery cover 219 (e.g., ...). Figure 5 The battery cover 219 covers the opening 11 of the battery mounting cavity, and the battery assembly 233 is assembled inside the battery mounting cavity. The design of the battery assembly 233 and the power switch 234 makes the nasal irrigator easy to operate, improving its usability. The removable battery cover 219 facilitates battery replacement and maintenance.

[0061] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A pressure-adjustable positive and negative pressure nasal irrigator, characterized in that: Includes a liquid storage tank, a drive assembly, and a nasal irrigation assembly: The upper end of the storage tank is open, and a storage cap is provided at the opening; the storage tank is divided in the middle to form two chambers, either left and right or front and back, and the two chambers are a clean liquid chamber and a waste liquid chamber. The drive assembly includes a base and a top cover. The top cover is disposed on the base and forms a receiving cavity with the base. The receiving cavity contains a pneumatic drive mechanism, which includes an air pump and a pressure regulating valve. The pressure regulating valve is used to control the pressure output by the air pump. The pressurizing end of the air pump is connected to the clean liquid chamber, and the vacuuming end of the air pump is connected to the waste liquid chamber; the base is provided with an outlet pipe and a return pipe, one end of the outlet pipe is connected to the clean liquid chamber, the other end of the outlet pipe is connected to the outlet of the nasal irrigation component, one end of the return pipe is connected to the waste liquid chamber, and the other end of the return pipe is connected to the inlet of the nasal irrigation component.

2. The pressure-adjustable positive and negative pressure neti-pot of claim 1, wherein: The base is provided with a first channel and a second channel, the first channel being connected to the pressurization end and the second channel being connected to the vacuuming end; The liquid storage cap is provided with a first through hole and a second through hole. The first channel passes through the first through hole and communicates with the clean liquid chamber, and the second channel passes through the second through hole and communicates with the waste liquid chamber.

3. The nasal irrigator with adjustable positive and negative pressure according to claim 1, characterized in that: The liquid storage cap is provided with a clean liquid outlet and a waste liquid outlet, and the base is provided with a third channel and a fourth channel; The third channel includes a first connecting end and a second connecting end, the first connecting end being connected to the liquid outlet pipe, and the second connecting end passing through the clean liquid outlet and being connected to the clean liquid chamber. The fourth channel includes a third connection end and a fourth connection end. The third connection end is connected to the return pipe, and the fourth connection end passes through the waste liquid outlet and is connected to the waste liquid chamber.

4. The pressure-adjustable positive and negative pressure neti-pot of claim 3, wherein: The clean liquid outlet and the waste liquid outlet are respectively provided with a first annular protrusion and a second annular protrusion; the bottom surface of the base is respectively provided with a first recess and a second recess around the second connecting end and the fourth connecting end; the first annular protrusion and the second annular protrusion cooperate with the first recess and the second recess respectively.

5. The pressure-adjustable positive and negative pressure neti-pot of claim 3, wherein: The second connection end is connected to a water pipe, which is placed inside the clean liquid chamber, with the bottom of the water pipe close to the bottom of the clean liquid chamber.

6. The pressure-adjustable positive and negative pressure neti-pot of claim 1, wherein: The nasal irrigation assembly includes a nasal irrigation base, a liquid guide base, and a connecting base. The connecting base includes a first interface and a second interface. The first interface is connected to the liquid outlet tube, and the second interface is connected to the liquid return tube. The liquid guide seat is rotatably mounted on the connecting seat, and the nasal irrigation seat is mounted on the top of the liquid guide seat.

7. The pressure-adjustable positive and negative pressure neti-pot according to claim 6, wherein: The connector is provided with a first chamber and a second chamber. The first chamber is connected to the first interface, and the second chamber is connected to the second interface. The liquid guide seat includes a first liquid guide channel and a second liquid guide channel, wherein the first liquid guide channel is connected to the first chamber and the second liquid guide channel is connected to the second chamber; The nasal irrigation device includes a first nasal tube and a second nasal tube. The first nasal tube includes the liquid outlet, and the second nasal tube includes the liquid inlet. The first nasal tube is connected to the first liquid channel, and the second nasal tube is connected to the second liquid channel.

8. The pressure-adjustable positive and negative pressure neti-pot of claim 7, wherein: The connecting seat has a cavity for containing liquid, and the cavity is divided into a first chamber and a second chamber by an annular dividing structure; The first chamber is formed on the inner side of the annular segmented structure, and the second chamber is formed between the outer wall of the annular segmented structure and the inner wall of the cavity.

9. The pressure-adjustable positive and negative pressure neti-pot of claim 8, wherein: The bottom of the liquid guide seat is provided with an annular protrusion, the first liquid guide channel is provided inside the annular protrusion, and the second liquid guide channel is provided outside the annular protrusion; After the liquid guide seat and the connecting seat are assembled, the annular protrusion is inserted into the first cavity.

10. A pressure-adjustable positive and negative pressure nasal irrigator according to claim 1, characterized in that: The pneumatic drive mechanism also includes a battery assembly and a power switch, wherein the battery assembly is electrically connected to the power switch, the air pump, and the pressure regulating valve; The power switch is mounted on the upper cover, and the operating surface of the power switch is exposed on the upper cover; The base has a battery mounting cavity, and the bottom surface of the base has a removable battery cover plate, which covers the opening of the battery mounting cavity, and the battery assembly is assembled inside the battery mounting cavity.

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