Micro-bubble water nozzle and closestool

Abstract

The utility model relates to the technical field of closestools, and provides a microbubble water nozzle which comprises a surface cover and an upper cover, the upper cover covers one side of the surface cover, a water inlet channel is formed between the surface cover and the upper cover, and a jet orifice is formed in the side, away from the upper cover, of the surface cover; the water tank further comprises a water passing assembly, the water passing assembly comprises an acceleration channel, the acceleration channel is communicated with the water inlet channel, and liquid from the water inlet channel can generate bubbles after passing through the acceleration channel. In addition, the utility model further provides a closestool.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of toilet, in particular to a micro-bubble water nozzle and a toilet. BACKGROUND

[0002] In the current background art, although there are various methods for generating bubble water in the market, such as injecting air into water by using Venturi effect or external air supply device, these methods generally face a common problem: the generated bubble diameter is relatively large, and these large bubbles often quickly dissipate in water, lacking a persistent suspension state, thus it is difficult to form micro-bubble water.

[0003] Therefore, the present application studies a micro-bubble water nozzle, which can generate micro-bubble water. CONTENT OF THE UTILITY MODEL

[0004] In order to be able to generate micro-bubble water.

[0005] In one aspect, the present application provides a micro-bubble water nozzle, which adopts the following technical solution:

[0006] A micro-bubble water nozzle, comprising a face cover and an upper cover, the upper cover is arranged on one side of the face cover, a water inlet channel is formed between the face cover and the upper cover, and a jet port is arranged on the side of the face cover away from the upper cover; further comprising a water passing assembly, the water passing assembly comprises an acceleration channel, the acceleration channel is communicated with the water inlet channel, and liquid from the water inlet channel can generate bubbles after passing through the acceleration channel.

[0007] By adopting the above technical solution, when the gas-water mixture passes through the water inlet channel and enters the acceleration channel, the water is accelerated at this time, the water flow speed is fast, the water pressure is small, and the solubility of the gas is low, and a large amount of small bubbles is precipitated.

[0008] Optionally, the water passing assembly further comprises a water passing channel, the water passing channel is communicated with the acceleration channel and the jet port, and the minimum diameter of the acceleration channel is less than or equal to the minimum diameter of the water passing channel, liquid from the water inlet channel can generate bubbles after passing through the acceleration channel and be sprayed out of the water passing channel.

[0009] By adopting the above technical solution, the guidance through the water passing channel helps to stabilize the bubbles, thereby realizing the generation of micro-bubbles.

[0010] Optionally, the included angle between the jet direction of the acceleration channel and the axis of the jet port is 0-10 degrees.

[0011] Optionally, the water passing assembly is a rotating body, and the jet direction of the acceleration channel and the axis of the jet port are coaxial or parallel.

[0012] Optionally, the acceleration channel is provided with one or more; the acceleration channel is a constant diameter straight section, or the acceleration channel comprises a constant diameter straight section and a tapered cavity, the tapered cavity is located upstream of the constant diameter straight section, and the tapered cavity gradually decreases in diameter along the water flow direction; the water passing channel is a constant diameter straight section or the diameter of the water passing channel gradually increases along the water flow direction.

[0013] Optionally, the length of the acceleration channel along the water flow direction is 2-5mm, and the minimum diameter of the acceleration channel is 0.5-1mm.

[0014] Optionally, the water passing assembly comprises an acceleration part and a water passing part, both of which are cylindrical, the acceleration channel is provided in the acceleration part, and the water passing channel is provided in the water passing part; the acceleration part and the water passing part are provided as separate parts, the water passing part further comprises a plug-in section, the acceleration part is inserted into the plug-in section, so that the acceleration channel and the water passing channel are in communication, the acceleration part is protrudingly arranged on the water passing part or arranged in the water passing part; or the acceleration part and the water passing part are integrally arranged.

[0015] By adopting the above technical scheme, the acceleration part and the water passing part are plug-in matched or integrally arranged, which is simple in structure and easy to assemble.

[0016] Optionally, a first groove is formed in the outer periphery of the water passing part, a first sealing ring is arranged in the first groove, and the water passing part is sealingly matched with the face cover through the first sealing ring; a second groove is formed in the outer periphery of the water passing part, a second sealing ring is arranged in the second groove, and the water passing part is sealingly matched with the face cover through the second sealing ring.

[0017] Optionally, a filter screen is further included, the filter screen can refine the bubbles, one side of the filter screen abuts against the side of the second sealing ring facing the jetting port, and the other side abuts against the face cover; the filter screen is provided with a plurality of layers, and the mesh number along the water flow direction is 100-200 meshes.

[0018] By adopting the above technical scheme, the bubbles can be further refined by the filter screen, and more stable and delicate micro-bubbles are formed.

[0019] Optionally, the water passing assembly is a fixed core, the acceleration channel is a through hole penetrating the fixed core in the axial direction, and the through hole is provided with a plurality of through holes and is arranged in a circumferential direction of the fixed core.

[0020] Optionally, a water passing cavity is provided at the bottom of the fixed core, the water passing cavity is in communication with the water outlet ends of the plurality of through holes, and the bubbles generated by the plurality of acceleration channels are guided to the jetting port after converging in the water passing cavity.

[0021] By adopting the technical scheme, the fixed core is provided with multiple acceleration channels, water flow is accelerated at the multiple acceleration channels, the more the acceleration channels are, the better the micro-bubble effect is.

[0022] Optionally, the fixed core has a length of 1-6 mm along the water flow direction, and a diameter of 4-10 mm; the acceleration channel is a straight section with equal diameter, or the acceleration channel comprises a straight section with equal diameter and a tapered cavity, the tapered cavity is located upstream of the straight section with equal diameter, the tapered cavity has a gradually decreasing diameter along the water flow direction, the diameter of the straight section with equal diameter is φ0.2 mm-φ0.8 mm, the number of the acceleration channels is 3-15, and the total cross-sectional area of the acceleration channels is 0.7-1.2 mm 2 .

[0023] By adopting the technical scheme, bubbles are formed in the acceleration channels, the more the acceleration channels are, the better the micro-bubble effect is, the increase of the diameter of the water passage makes water gradually diffuse in the flowing process, thereby reducing the local pressure of the fluid, the reduction of the pressure promotes the gas dissolved in the gas-water mixture to be precipitated, and meanwhile, enough space is provided for the bubbles to expand and stabilize, avoiding the breakage and combination of the bubbles in the spraying process.

[0024] Optionally, the device further comprises an anal washing port or a vaginal washing port, and the spraying port is arranged in a common hole or separate holes with the anal washing port and the vaginal washing port.

[0025] By adopting the technical scheme, the common hole arrangement can make the bubble water cleaning more comfortable during anal washing or vaginal washing; the separate hole arrangement can avoid the bubble water from blocking and affecting the anal washing or vaginal washing function, and meanwhile, the user can freely select the bubble water cleaning or normal anal washing or vaginal washing function according to the preference, and the cleaning is diversified.

[0026] Optionally, the device further comprises a water supply source, a mixing cavity, an air pump and a water pump, the water supply source supplies water to the mixing cavity, the air pump is communicated with the mixing cavity and forms a gas-water mixture in the mixing cavity, and the water pump draws the gas-water mixture to the water inlet channel; or, the water pump is arranged between the water supply source and the mixing cavity, the air pump is communicated with the mixing cavity, and the water pump draws water from the water supply source to the mixing cavity to mix with the air.

[0027] Optionally, the water supply source is opened before the air pump and the water pump are opened, and the water supply source is closed after the air pump and the water pump are closed.

[0028] Optionally, the spraying port gradually decreases along the water flow direction.

[0029] By adopting the technical scheme, turbulence and vortex phenomena of water flow at the injection port can be reduced, the water flow can be sprayed more smoothly, and more uniform and fine bubbles can be formed, thereby playing a rectifying role.

[0030] In another aspect, the application provides a toilet adopting the technical scheme as follows:

[0031] A toilet comprises the micro-bubble water nozzle.

[0032] In summary, the application has at least one of the following beneficial technical effects:

[0033] 1. When the gas-water mixture passes through the water inlet channel into the acceleration channel, the water is accelerated, the water flow speed is fast, the water pressure is small, and the gas solubility is low, a large number of small bubbles are precipitated, and the water flow is guided through the water passage, which helps to stabilize the bubbles, thereby realizing the generation of micro-bubbles.

[0034] 2. The water flow is guided through the water passage, which helps to stabilize the bubbles, thereby realizing the generation of micro-bubbles.

[0035] 3. The acceleration part and the water passage part are inserted and matched and integrally arranged, which is simple in structure and easy to assemble.

[0036] 4. The gas bubbles are formed in the acceleration channel, the more the acceleration channels, the more the water flow is accelerated in the acceleration channels, and the more the acceleration channels, the better the micro-bubble effect; the increase of the diameter of the water passage makes the water gradually diffuse in the flow process, thereby reducing the local pressure of the fluid, the reduction of the pressure promotes the precipitation of the gas dissolved in the gas-water mixture, and at the same time, enough space is provided for the bubbles to expand and stabilize, avoiding the rupture and combination of the bubbles in the spraying process.

[0037] 5. The filter screen can further refine the bubbles to form more stable and fine small bubbles.

[0038] 6. The fixed core is provided with a plurality of acceleration channels, and the water flow is accelerated in the plurality of acceleration channels, and the more the acceleration channels, the better the micro-bubble effect.

[0039] 7. The injection port is arranged in a common hole or a separate hole with the hip washing port and the female washing port, the common hole arrangement can make the bubble water cleaning more comfortable during hip washing or female washing; the separate hole arrangement can avoid the bubble water from blocking and affecting the hip washing or female washing function, and at the same time, the user can freely choose bubble water cleaning or normal hip washing or female washing function according to the preference, and the cleaning is diversified.

[0040] 8. It is helpful to reduce the turbulence and vortex phenomena of water flow at the injection port, so that the water flow can be sprayed more smoothly, and more uniform and fine bubbles can be formed, thereby playing a rectifying role. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a cross-sectional view of a micro-bubble water nozzle according to an embodiment of the present application;

[0042] Figure 2 is an exploded view of a micro-bubble water nozzle according to an embodiment of the present application;

[0043] Figure 3 is a schematic view of a shell structure of a micro-bubble water nozzle according to an embodiment of the present application, which embodies a split-hole arrangement of a jetting port and a hip washing port and a vaginal washing port;

[0044] Figure 4 is a cross-sectional view of a foaming nozzle according to another embodiment of the micro-bubble water nozzle of the present application;

[0045] Figure 5 is a schematic view of a water passing assembly according to another embodiment of the micro-bubble water nozzle of the present application;

[0046] Figure 6 is a schematic view of the water passing assembly according to another embodiment of the micro-bubble water nozzle of the present application from another perspective.

[0047] Reference signs: 1, face cover; 2, upper cover; 3, water inlet channel; 31, inlet; 32, accommodating cavity; 4, jetting port; 5, water passing assembly; 5', fixed core; 51, acceleration channel; 52, water passing portion; 521, plug-in section; 522, water passing channel; 53, water passing cavity; 6, first groove; 7, first sealing ring; 8, second groove; 9, second sealing ring; 10, filter screen; 11, hip washing port; 12, vaginal washing port; 13, shell; 14, jetting hole; 15, hip washing hole; 16, vaginal washing hole. DETAILED DESCRIPTION

[0048] The following will be described in detail below with reference to the accompanying drawings. Figures 1-6 The present application will be further described in detail.

[0049] An embodiment of the present application discloses a micro-bubble water nozzle. Referring to Figure 1 , the micro-bubble water nozzle comprises a face cover 1 and an upper cover 2, the upper cover 2 is arranged on one side of the face cover 1, a water inlet channel 3 is formed between the face cover 1 and the upper cover 2, and a jetting port 4 is arranged on the side of the face cover 1 away from the upper cover 2. In some embodiments, the jetting port 4 gradually decreases along the water flow direction, and a gas-water mixture is sprayed out of the jetting port 4 through the water inlet channel 3.

[0050] The micro-bubble water nozzle further comprises a water passing assembly 5, the water passing assembly 5 comprises an acceleration channel 51, liquid from the water inlet channel 3 can generate bubbles after being accelerated through the acceleration channel 51, when the gas-water mixture enters the acceleration channel 51 through the water inlet channel 3, the water is accelerated, the water flow speed is fast, the water pressure is small, and the solubility of the gas is low, so that a large amount of small bubbles are separated out.

[0051] In some embodiments, the water passing assembly 5 further comprises a water passing channel 522, which is in communication with the accelerating channel 51 and the jetting port 4, and the minimum diameter of the accelerating channel 51 is less than or equal to the minimum diameter of the water passing channel 522, and the liquid from the water inlet channel 3 can generate bubbles after passing through the accelerating channel 51 and be jetted out by the water passing channel 522.

[0052] In some embodiments, the angle between the jetting direction of the accelerating channel 51 and the axis of the jetting port 4 is 0-10 degrees.

[0053] In some embodiments, the water passing assembly 5 is a rotating body, and the jetting direction of the accelerating channel 51 is coaxial or parallel to the axis of the jetting port 4. It is to be noted that a rotating body is a closed geometric body formed by rotating a planar figure around a fixed straight line in the plane where the planar figure is located, such as a circular truncated cone, a circular cylinder, a circular cone, a sphere, etc.

[0054] In some embodiments, the accelerating channel 51 is provided with one or more; the accelerating channel 51 is a straight section with equal diameter, or the accelerating channel 51 comprises a straight section with equal diameter and a tapered cavity, which is located upstream of the straight section with equal diameter and gradually decreases in diameter along the water flow direction; the water passing channel 522 is a straight section with equal diameter or gradually increases in diameter along the water flow direction.

[0055] In some embodiments, the length of the accelerating channel 51 along the water flow direction is 2-5 mm, and the minimum diameter of the accelerating channel 51 is 0.5-1 mm.

[0056] The water passing assembly 5 comprises an accelerating part and a water passing part 52, the accelerating channel 51 is formed in the accelerating part, the water passing channel 522 is formed in the water passing part 52, the accelerating channel 51 is in communication with the water inlet channel 3, the water passing part 52 is in communication with the accelerating channel 51 and the jetting port 4 through the water passing channel 522, and the minimum diameter of the accelerating channel 51 is less than the minimum diameter of the water passing channel 522 of the water passing part 52. The guidance of the water passing channel 522 of the water passing part 52 helps to stabilize the bubbles, thereby realizing the generation of micro-bubbles. In other embodiments, the accelerating channel 51 can further comprise a straight section with equal diameter and a tapered cavity (not shown), which is located upstream of the straight section with equal diameter and gradually decreases in diameter along the water flow direction.

[0057] In some embodiments, the water passing portion 52 and the accelerating portion are both cylindrical; the water passing portion 52 and the accelerating portion are provided separately, or the water passing portion 52 and the accelerating portion are provided integrally. Here, the water passing portion 52 and the accelerating portion are provided separately, the accelerating portion is provided in a tubular structure, a hole passing through the center of the accelerating portion forms the accelerating channel 51, the water passing portion 52 further comprises a plug-in section 521, the plug-in section 521 is towards the side of the water inlet channel 3, and the accelerating portion is inserted into the plug-in section 521 and fixed, and then communicates with the water passing channel 522, so that the accelerating channel 51 and the water passing channel 522 are coaxially provided, and the accelerating portion protrudes from the plug-in section 521; in other embodiments, the accelerating portion can be provided in the water passing portion, that is, the accelerating portion is flush with the plug-in section 521 after being plugged into the plug-in section 521.

[0058] The diameter of the water passing channel 522 gradually increases along the water flow direction, so that the water gradually diffuses during the flow process, thereby reducing the local pressure of the fluid, the reduction of the pressure promotes the gas dissolved in the gas-water mixture to be precipitated, at the same time, enough space is provided for the bubbles to expand and stabilize, avoiding the breakage and combination of the bubbles during the spraying process, so as to form more stable micro-bubbles.

[0059] With reference to Figure 1 and Figure 2 In some embodiments, a first groove 6 is provided on the outer periphery of the water passing portion 52, the first groove 6 is provided on the plug-in section 521 in the present embodiment, a first sealing ring 7 is provided in the first groove 6, and the water passing portion 52 is sealingly matched with the face cover 1 through the first sealing ring 7; a second groove 8 is provided on the outer periphery of the water passing portion 52, a second sealing ring 9 is provided in the second groove 8, and the water passing portion 52 is sealingly matched with the face cover 1 through the second sealing ring 9.

[0060] With reference to Figure 1 In some embodiments, the micro-bubble water nozzle further comprises a filter screen 10, the filter screen 10 can refine the bubbles, one side of the filter screen 10 abuts against the side of the second sealing ring 9 towards the spraying port 4, and the other side abuts against the face cover 1, so that the filter screen 10 can abut against the face cover 1 through the sealing ring, and the bubbles can be further refined through the filter screen 10, so that the bubbles are more delicate and small.

[0061] The filter screen 10 is provided with several layers, in the present embodiment, the filter screen 10 is provided with two layers, in other embodiments, one layer, three layers or more layers can be provided according to needs, and the mesh number along the water flow direction is 100-200 meshes.

[0062] In some embodiments, the spraying port 4 gradually decreases along the water flow direction, so that the water flow is sprayed more smoothly, and more uniform and delicate bubbles are formed, thereby playing a rectifying role.

[0063] In other embodiments, with reference to Figures 4 to 6The water passing assembly can also be a fixed core 5', and the acceleration channels 51 are arranged along the fixed core 5'. The acceleration channels 51 are through holes penetrating the fixed core 5' in the axial direction, and a plurality of the through holes are arranged along the circumference of the fixed core 5'.

[0064] The bottom of the fixed core 5' is provided with a water passing cavity 53, which is connected with the water outlet ends of the plurality of through holes. The bubbles generated by the acceleration channels 51 are guided to the spray port 4 after converging in the water passing cavity 53. Of course, the bottom of the fixed core 5' can also not be provided with the water passing cavity 53. The water inlet channel 3 upstream of the acceleration channels 51 includes an inlet 31 and a containing cavity 32. Liquid enters the containing cavity 32 from the inlet 31 in a high-pressure state and then enters the acceleration channels 51 to form micro-bubble water. The diameter of the containing cavity 32 is larger than that of the inlet 31. The water flow slows down when entering the containing cavity 32 from the inlet 31, and the pressure increases. When the water flow enters the acceleration channels 51 with a plurality of small diameters, the water flow speed is fast, the water pressure is small, and the solubility of gas is low, and a large amount of micro-bubbles are separated out. The high-pressure device such as a water pump in the embodiment can pressurize the water flow. The pressure difference before and after the containing cavity 32 and the acceleration channels 51 is used to generate bubbles. The larger the pressure difference, the better the micro-bubble effect.

[0065] The length of the fixed core 5' along the water flow direction is 1-6 mm, and the diameter of the fixed core 5' is 4-10 mm. The acceleration channels 51 are straight sections with equal diameters, or the acceleration channels 51 include straight sections with equal diameters and a tapered cavity. The tapered cavity is located upstream of the straight sections with equal diameters, and the diameter of the tapered cavity gradually decreases along the water flow direction. The diameter of the straight sections with equal diameters is φ0.2 mm-φ0.8 mm. The number of the acceleration channels is 3-15. The total cross-sectional area of the plurality of acceleration channels is 0.7-1.2 mm 2 The water passing cavity 53 can store and guide the micro-bubble water to the spray port 4. The diameter of the water passing cavity 53 can decrease along the water flow direction or be equal.

[0066] Referring to Figure 2 In some embodiments, the micro-bubble water nozzle further includes an anal washing port 11 or a vaginal washing port 12. The micro-bubble water nozzle in the embodiment further includes a shell 13, which is sleeved on the face cover 1 and connected with the upper cover 2. The shell 13 is provided with spray holes 14, anal washing holes 15, and vaginal washing holes 16 corresponding to the spray port 4, the anal washing port 11, and the vaginal washing port 12, respectively. The spray port 4 shares a hole with the anal washing port 11 and the vaginal washing port 12. In the embodiment, the spray port 4 shares a hole with the vaginal washing port 12, i.e., the spray hole 14 shares a hole with the vaginal washing hole 16. This makes the bubble cleaning more delicate and comfortable during vaginal washing, and enables deep cleaning. Figure 3The spray nozzle 4 can be set separately from the posterior wash nozzle 11 and the feminine wash nozzle 12, that is, the spray nozzle 14 can be set separately from the posterior wash nozzle 15 and the feminine wash nozzle 16. This can prevent air bubbles from clogging the posterior wash nozzle 15 or the feminine wash nozzle 16 and affecting the posterior wash or feminine wash function. At the same time, users can freely choose bubble water cleaning or normal posterior wash or feminine wash function according to their preferences, making the cleaning more diverse.

[0067] In some embodiments, the microbubble water nozzle further includes a water supply source, a mixing chamber, an air pump, and a water pump. The water supply source supplies water to the mixing chamber, the air pump is connected to the mixing chamber and forms an air-water mixture in the mixing chamber, and the water pump draws the air-water mixture to the water inlet channel 3. The air-water mixture forms microbubbles through the water passing component 5. Alternatively, the water pump is located between the water supply source and the mixing chamber, the air pump is connected to the mixing chamber, and the water pump draws water from the water supply source to the mixing chamber to mix with the air.

[0068] In some embodiments, the water supply source is turned on before the air pump and water pump are turned on; the water supply source is turned off after the air pump and water pump are turned off.

[0069] The implementation principle of a microbubble water nozzle in this application embodiment is as follows: when the gas-water mixture enters the acceleration channel 51 through the water inlet channel 3, the water is accelerated, the water flow speed is fast, the water pressure is small, the solubility of the gas is low, and a large number of microbubbles are precipitated.

[0070] This application also discloses a toilet. A toilet includes the aforementioned microbubble water nozzle.

[0071] The implementation principle of a toilet according to an embodiment of this application is as follows: the microbubble water nozzle can generate a large number of tiny bubbles during cleaning, making it more comfortable and achieving better deep cleaning.

[0072] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A microbubble water nozzle, characterized in that: The device includes a face cover and a top cover, the top cover being disposed on one side of the face cover, forming a water inlet channel between the face cover and the top cover, and a spray nozzle being provided on the side of the face cover opposite to the top cover; it also includes a water passing assembly, the water passing assembly including an acceleration channel, the acceleration channel being connected to the water inlet channel, and liquid from the water inlet channel being able to generate bubbles after passing through the acceleration channel.

2. The microbubble water nozzle according to claim 1, characterized in that: The water-passing assembly further includes a water-passing channel, which is connected to the acceleration channel and the injection port. The minimum diameter of the acceleration channel is less than or equal to the minimum diameter of the water-passing channel. Liquid from the water inlet channel can generate bubbles after passing through the acceleration channel and be ejected from the water-passing channel.

3. A microbubble water nozzle according to claim 1, characterized in that: The angle between the injection direction of the acceleration channel and the axis of the injection port is 0 to 10 degrees.

4. A microbubble water nozzle according to claim 3, characterized in that: The water-passing component is a rotating body, and the injection direction of the acceleration channel is set coaxially or parallel to the axis of the injection port.

5. A microbubble water nozzle according to claim 2, characterized in that: The acceleration channel is provided in one or more ways; the acceleration channel is a straight section of equal diameter, or the acceleration channel includes a straight section of equal diameter and a conical cavity, the conical cavity is located upstream of the straight section of equal diameter, and the diameter of the conical cavity gradually decreases along the water flow direction; the water passage is a straight section of equal diameter or the diameter of the water passage gradually increases along the water flow direction.

6. A microbubble water nozzle according to claim 2, characterized in that: The acceleration channel has a length of 2-5 mm along the water flow direction, and the minimum diameter of the acceleration channel is 0.5-1 mm.

7. A microbubble water nozzle according to claim 2, characterized in that: The water-passing assembly includes an accelerating section and a water-passing section, both of which are cylindrical. The accelerating channel is located in the accelerating section, and the water-passing channel is located in the water-passing section. The accelerating section and the water-passing section are separately detached. The water-passing section also includes a plug-in section, into which the accelerating section is inserted to connect the accelerating channel and the water-passing channel. The accelerating section protrudes from the water-passing section or is located inside the water-passing section. Alternatively, the acceleration unit and the water passage unit may be integrally formed.

8. A microbubble water nozzle according to claim 7, characterized in that: A first groove is formed on the outer periphery of the water-passing part, and a first sealing ring is provided in the first groove. The water-passing part is sealed with the face cover through the first sealing ring. A second groove is formed on the outer periphery of the water-passing part, and a second sealing ring is provided in the second groove. The water-passing part is sealed with the face cover through the second sealing ring.

9. A microbubble water nozzle according to claim 8, characterized in that: It also includes a filter screen that can refine the air bubbles. One side of the filter screen abuts against the side of the second sealing ring facing the spray nozzle, and the other side abuts against the face cover. The filter screen is provided with several layers, and the mesh size along the water flow direction is 100 to 200 mesh.

10. A microbubble water nozzle according to claim 1, characterized in that: The water-passing component is a fixed core, and the acceleration channel is a through hole that extends along the axial direction of the fixed core. Several through holes are provided and are arranged at intervals along the circumference of the fixed core.

11. A microbubble water nozzle according to claim 10, characterized in that: The bottom of the fixed core is provided with a water passage cavity, which is connected to the water outlet of several through holes. The air bubbles generated by several acceleration channels are guided to the jet port after merging through the water passage cavity.

12. A microbubble water nozzle according to claim 10, characterized in that: The length of the fixing core along the water flow direction is 1-6 mm, and the diameter of the fixing core is 4-10 mm; the acceleration channel is a straight section of constant diameter, or the acceleration channel includes a straight section of constant diameter and a conical cavity, the conical cavity is located upstream of the straight section of constant diameter, and the diameter of the conical cavity gradually decreases along the water flow direction; the diameter of the straight section of constant diameter is φ0.2 mm to φ0.8 mm; the number of acceleration channels is 3 to 15; and the total cross-sectional area of ​​the acceleration channels is 0.7-1.2 mm². 2 .

13. A microbubble water nozzle according to any one of claims 1-12, characterized in that: It also includes a posterior wash port and / or a feminine wash port, wherein the spray port is provided with the posterior wash port and the feminine wash port sharing the same hole or having separate holes.

14. A microbubble water nozzle according to any one of claims 1-12, characterized in that: It also includes a water supply source, a mixing chamber, an air pump, and a water pump. The water supply source supplies water to the mixing chamber. The air pump is connected to the mixing chamber and forms an air-water mixture in the mixing chamber. The water pump pumps the air-water mixture to the water inlet channel. Alternatively, the water pump is located between the water supply source and the mixing chamber, and the air pump is connected to the mixing chamber. The water pump draws water from the water supply source into the mixing chamber to mix with air.

15. A microbubble water nozzle according to claim 14, characterized in that: The water supply source is turned on before the air pump and water pump are turned on; the water supply source is turned off after the air pump and water pump are turned off.

16. A microbubble water nozzle according to claim 1, characterized in that: The nozzle gradually decreases in size along the direction of water flow.

17. A toilet, characterized in that: Including the microbubble water nozzle as described in any one of claims 1-16.

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