Micro-nano bubble water generating device

Abstract

The invention relates to the field of drinking water purification, in particular to a micro-nano bubble water generating device, which adopts a filter part capable of screening micro-nano bubbles to replace traditional complicated parts such as a high-pressure pump and an ultrasonic generator, and adopts the natural synergistic effect of water flow impact and the filter part to generate micro-nano bubble water. The gas can be efficiently dispersed to form stable micro-nano bubbles without high pressure, the stable micro-nano bubbles are attached to the outer surface of the filter part, the liquid quickly flows and impacts the outer surface of the filter part, and the generated micro-nano bubbles are taken away and fused into the liquid to form micro-nano bubble water. According to the device, a multi-stage filtering system and a pressure adjusting module of a traditional device are ingeniously simplified, and the equipment manufacturing cost and the maintenance difficulty are greatly reduced while the bubble quality is guaranteed. The device is compact in overall structure and low in energy consumption, can meet the requirement for miniaturization of household equipment, can be expanded to efficient production of commercial scenes, and is particularly suitable for large-scale application and popularization in the livelihood fields such as drinking water purification and agricultural irrigation.

Description

Technical Field

[0001] The present application relates to the field of drinking water purification and relates to a micro-nano bubble water generating device. Background Art

[0002] Due to its unique physical and chemical properties, micro-nano bubble water is widely used in drinking water purification, agricultural irrigation oxygenation, medical aesthetics, and other fields. Micro-nano bubbles are typically less than 100 microns in diameter and possess characteristics such as surface charge, long life, and high gas dissolution efficiency. Currently, common generation devices primarily utilize technologies such as high-pressure dissolution, jet negative pressure, or ultrasonic vibration. The basic principle is to mechanically cut gas into tiny bubbles and stably disperse them in water. These devices typically consist of core components such as a gas-liquid mixing chamber, a high-pressure pump, and a special nozzle, enabling bubble size control and increased gas saturation in the water.

[0003] However, existing technical solutions generally have the problem of high equipment costs. On the one hand, precision-machined nozzles or ultrasonic generators require the use of special alloys or ceramic materials, which results in high manufacturing costs. On the other hand, to ensure bubble stability, the system often needs to be equipped with complex pressure regulation modules and multi-stage filtration components, resulting in a complex overall structure and increased maintenance costs. In addition, in the scenario of household drinking water equipment, traditional solutions are difficult to meet miniaturization requirements due to their high energy consumption and large size, while large-scale commercial systems require expensive boosting equipment and automated control modules, making the unit price of micro-nano bubble water preparation much higher than that of ordinary purified water, which seriously restricts the popularization and promotion of this technology. Summary of the Invention

[0004] In order to solve or at least partially solve the above technical problems, the present application provides a micro-nano bubble water generating device, comprising:

[0005] A shell having a cavity therein and provided with a water inlet and a water outlet respectively connected to the cavity;

[0006] an air delivery pipe, passing through the shell and connected to the cavity, so as to have an air outlet located in the cavity;

[0007] a filter element connected to the gas pipe and located at the gas outlet, the filter element being disposed toward the water inlet; the housing forming a first liquid flow channel at the water inlet, and a second liquid flow channel connected to the first liquid flow channel formed between the housing and the filter element;

[0008] The gas input through the gas transmission pipe enters the cavity after being screened by the filter element, and is mixed with the liquid flowing from the first liquid flow channel into the second liquid flow channel to form micro-nano bubble water, and flows out through the water outlet.

[0009] Optionally, a flow cross-sectional area of ​​the second liquid flow channel is smaller than a flow cross-sectional area of ​​the first liquid flow channel.

[0010] Optionally, the filter element includes:

[0011] a connecting portion connected to the air outlet;

[0012] A filtering side wall extends from the connecting portion toward the water inlet, the filtering side wall having filtering holes for allowing micro-nano bubbles to pass through;

[0013] The head end portion is arranged at an end of the filtering side wall away from the connecting portion.

[0014] Optionally, the filter element is arranged in the middle of the cavity, and the second liquid flow channel is formed between the filter side wall and the head end and the inner wall of the cavity respectively.

[0015] Optionally, the outer diameter of the head end portion gradually decreases from the filtering side wall toward the water inlet, so that the flow cross-sectional area of ​​the second liquid flow channel gradually increases.

[0016] Optionally, the inner diameter of the shell at a position corresponding to the head end gradually increases from a direction toward the water inlet to a direction away from the water inlet.

[0017] Optionally, the outer diameter of the filtering side wall gradually increases from the head end toward the connecting portion.

[0018] Optionally, a mounting seat is provided on the surface of the air pipe close to the air outlet, the filter element is detachably connected to the mounting seat via a threaded structure, and the extension length of the filter element relative to the mounting seat is adjustable via the threaded structure.

[0019] Optionally, the mounting seat further includes a sealing cover, which is slidably engaged with the surface of the filter side wall and is used to shield the surface of the filter side wall to seal the micro-nano bubble filter holes on the surface of the filter side wall;

[0020] The sealing cover can adjust the area or number of the micro-nano bubble filter holes sealed as the filter element moves relative to the mounting seat.

[0021] Optionally, a plurality of protruding guide plates are provided on the surface of the filtering side wall, and the guide plates are extended toward the connecting portion or the head end;

[0022] The guide plate is used to abut against the inner wall of the cavity when the filter element is deformed or bent by the impact of liquid.

[0023] Optionally, the height of the guide plate protruding from the surface of the filter side wall gradually increases from the head end toward the connecting portion, and the side of the guide plate away from the filter side wall has an abutment wall of a preset length;

[0024] When the filter element is deformed or bent by the impact of liquid, the abutting wall abuts against the inner wall of the cavity.

[0025] Optionally, the guide plate is provided with a groove extending from an end of the guide plate away from the filter side wall toward a direction close to the filter side wall;

[0026] The liquid passing through the second liquid flow channel impacts the groove to form a vortex, and is mixed with the micro-nano bubbles attached to the surface of the filter side wall to form micro-nano bubble water.

[0027] The micro-nano bubble water generating device provided by this application uses a filter element capable of screening micro-nano bubbles to replace traditional high-pressure pumps, ultrasonic generators and other complex components, and with the help of the natural synergy between the impact of water flow and the filter element, the gas can be efficiently dispersed to form stable micro-nano bubbles without high pressure, and attached to the outer surface of the filter element. The liquid flows rapidly and impacts the outer surface of the filter element, carrying away the generated micro-nano bubbles and integrating them into the liquid to form micro-nano bubble water. This device cleverly simplifies the multi-stage filtration system and pressure regulation module of the traditional device, while ensuring the quality of the bubbles, greatly reducing the equipment manufacturing cost and maintenance difficulty. The overall structure of the device is compact and the energy consumption is low. It can not only meet the needs of miniaturization of household equipment, but also be expanded to efficient production in commercial scenarios. It is particularly suitable for large-scale promotion and application in people's livelihood areas such as drinking water purification and agricultural irrigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more clearly illustrate the embodiments of the present application, the following briefly introduces the relevant drawings. It should be understood that the drawings described below are only used to illustrate some embodiments of the present application, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned herein based on these drawings.

[0029] Figure 1 This is a schematic diagram of the internal structure of a micro-nano bubble water generating device according to one embodiment of the present application;

[0030] Figure 2 This is a schematic diagram of the appearance of a micro-nano bubble water generating device according to one embodiment of the present application;

[0031] Figure 3 This is a schematic diagram of the internal structure of a micro-nano bubble water generating device according to another embodiment of the present application;

[0032] Figure 4 This is a schematic diagram of the appearance of a micro-nano bubble water generating device according to another embodiment of the present application;

[0033] Figure 5 This is a schematic diagram of a partial cross-sectional structure of an embodiment of the present application;

[0034] Figure 6 This is a schematic diagram of a partial cross-sectional structure of an embodiment of the present application;

[0035] Figure 7 This is a schematic diagram of a partial cross-sectional structure of an embodiment of the present application;

[0036] Figure 8 This is a schematic diagram of a partial cross-sectional structure of an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 10. Housing; 11. First sleeve; 12. Second sleeve; 13. Third sleeve; 14. Fourth sleeve; 141. First locking mechanism; 101. Water inlet; 102. Water outlet; 111. First liquid flow channel; 112. Second liquid flow channel;

[0039] 20. Gas pipe; 201. Gas outlet;

[0040] 30. Filter element; 31. Connecting portion; 32. Filter side wall; 33. Head end; 34. Guide plate; 341. Abutting wall; 342. Groove;

[0041] 40. Mounting seat; 41. Second locking mechanism; 42. Sealing cover. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", 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 the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0044] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0045] The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings in the embodiments of the present application.

[0046] Example 1

[0047] like Figure 1 As shown, this embodiment provides a micro-nano bubble water generating device, which includes a housing 10 having a cavity therein. The housing 10 is provided with a water inlet 101 and a water outlet 102 respectively communicating with the cavity.

[0048] The housing 10 may be an integrally formed structure, with a water inlet 101 provided at one end and a water outlet 102 provided at the other end. Of course, the housing 10 may also be an assembly formed by combining multiple components.

[0049] like Figure 1 and Figure 2 As shown, the housing 10 is composed of four sleeves, and the housing 10 includes a first sleeve 11, a second sleeve 12, a third sleeve 13 and a fourth sleeve 14.

[0050] The first sleeve 11 is a three-way pipe having three openings. Preferably, the first sleeve 11 can be a T-shaped three-way pipe. The first opening of the first sleeve 11 is connected to the second sleeve 12. The second sleeve 12 is provided with a water inlet 101. The second opening of the first sleeve 11 is provided with a third sleeve 13. The third sleeve 13 is provided with a water outlet 102. The third opening of the first sleeve 11 is provided with a fourth sleeve 14. The second sleeve 12, the third sleeve 13, and the fourth sleeve 14 respectively block the first sleeve 11, forming a cavity within the first sleeve 11.

[0051] Preferably, the second sleeve 12 , the third sleeve 13 and the fourth sleeve 14 are respectively connected to the first sleeve 11 through threads, and seals are provided at the interfaces to ensure the sealing of the housing 10 after assembly.

[0052] The housing 10 of this embodiment is composed of a plurality of detachable sleeves, which also facilitates maintenance of the device. When the cavity of the housing 10 is blocked or needs to be cleaned regularly, the detachable design of the housing 10 provides convenience.

[0053] The micro-nano bubble water generating device provided in this embodiment further comprises an air delivery pipe 20 , which passes through the housing 10 and is connected to the cavity, thereby comprising an air outlet 201 located in the cavity.

[0054] like Figure 1 As shown, the fourth sleeve 14 has an access port reserved, and the gas pipe 20 passes through the access port of the fourth sleeve 14 and extends into the cavity. A first locking mechanism 141 is provided at the access port of the fourth sleeve 14 for fixing the fourth sleeve 14 and the gas pipe 20, and the first locking mechanism 141 has a sealing member, such as a sealing ring, to ensure the sealing of the cavity of the shell 10.

[0055] In one embodiment, the first locking mechanism 141 can be a threaded sleeve that fits into the threaded connection of the fourth sleeve 14 and a clamp disposed on the threaded connection of the fourth sleeve 14, with the outer side of the clamp having an inclined surface. During installation, the gas pipe 20 extends through the threaded connection of the clamp and the fourth sleeve 14 and into the cavity of the housing 10. The threaded sleeve is then placed over the threaded connection of the fourth sleeve 14, enclosing the clamp. As the threaded sleeve rotates and advances, it presses against the inclined surface of the clamp, causing the clamp to clamp the gas pipe 20, securing the gas pipe 20 to the housing 10.

[0056] The first locking mechanism 141 mentioned in this embodiment only needs to be able to achieve the installation and fixation of the gas pipe 20 and the shell 10 and ensure the sealing of the cavity of the shell 10. Therefore, this embodiment does not impose any sole limitation on the specific structure of the first locking mechanism 141.

[0057] In one embodiment, the gas pipe 20 can also be directly integrally formed with the shell 10, that is, the shell 10 has its own gas pipe 20. When gas needs to be connected, the gas pipe 20 port on the shell 10 can be directly connected to the gas supply equipment.

[0058] Based on the above description, this embodiment does not impose any limitation on the shape and structure of the housing 10 .

[0059] The micro-nano bubble water generating device provided in this embodiment further comprises a filter element 30 , which is connected to the gas pipe 20 and located at the gas outlet 201 , and is used to filter the gas in the gas pipe 20 to obtain micro-nano bubbles.

[0060] like Figure 1 As shown, the filter element 30 is disposed toward the water inlet 101; the housing 10 forms a first liquid flow channel 111 at the water inlet 101, and a second liquid flow channel 112 connecting the first liquid flow channel 111 is formed between the housing 10 and the filter element 30. Liquid can enter the first liquid flow channel 111 from the water inlet 101, enter the second liquid flow channel 112, and be discharged from the water outlet 102.

[0061] In this embodiment, the gas input by the gas supply pipe 20 is filtered by the filter element 30 to form micro-nano bubbles and enter the second liquid flow channel 112. At the same time, liquid enters the first liquid flow channel 111 from the water inlet 101. The micro-nano bubbles are impacted by the liquid rushing from the first liquid flow channel 111 into the second liquid flow channel 112, thereby producing micro-nano bubble water. The micro-nano bubble water flows out of the device through the water outlet 102 for user consumption.

[0062] In one embodiment, the filter element 30 may be a 30-mesh stainless steel sintered filter element, the pore size of which is controlled within the range of 10-50 microns, thereby generating the required micro-nano bubbles.

[0063] In some embodiments, the filter element 30 can also be made of zirconia ceramics, 316L stainless steel sintered felt, or polyethylene microporous membrane, etc. The filter element 30 only needs to screen and divide the gas introduced into the gas pipe 20 into tiny bubbles (micro-nano bubbles), so the structure or specific form of the filter element 30 is not limited.

[0064] The principle of generating micro-nano bubble water in this embodiment is as follows:

[0065] The gas in the gas pipe 20 forms micro-nano bubbles under the sieving effect of the filter element 30. After being generated, these micro-nano bubbles preferentially adhere to the outer surface of the filter element 30. In the process of liquid rushing from the first liquid flow channel 111 into the second liquid flow channel 112, it will inevitably impact the filter element 30, impacting the micro-nano bubbles in the rapid flow of the liquid, and carrying the micro-nano bubbles away and dissolving them into the water to form micro-nano bubble water. Furthermore, this embodiment forms a second liquid flow channel 112 between the filter element 30 and the inner cavity side wall of the housing 10. The device introduces liquid through the water inlet 101, forming a high-speed liquid flow in the first liquid flow channel 111. After being cut or diverted by the surface of the filter element 30, it enters the second liquid flow channel 112. Since the liquid flows rapidly in the second liquid flow channel 112, as soon as micro-nano bubbles are generated on the outer surface of the filter element 30, they will be carried away by the liquid, forming micro-nano bubble water.

[0066] It is understandable that when micro-nano bubbles are generated, if they stay on the outer surface of the filter element 30 for a long time or encounter collisions, the bubbles will combine to form large bubbles, which will not reach the micro-nano bubble level. However, in this embodiment, the liquid flow rate in the second liquid flow channel 112 is too fast. When the micro-nano bubbles are produced on the outer surface of the filter element 30, they are carried away by the liquid before they have time to grow larger, thereby ensuring that the generated bubbles are small enough to meet the micro-nano level requirements. Therefore, the structural design of this embodiment can effectively produce micro-nano bubble water, and the design is ingenious and the cost is low.

[0067] Based on this, the micro-nano bubble water generating device provided in this embodiment adopts a filter element 30 capable of screening micro-nano bubbles to replace traditional complex components such as high-pressure pumps and ultrasonic generators, and with the help of the natural synergy between the impact of water flow and the filter element 30, the gas can be efficiently dispersed to form stable micro-nano bubbles without high pressure, and attached to the outer surface of the filter element 30. The liquid flows rapidly and impacts the outer surface of the filter element 30, carrying away the generated micro-nano bubbles and integrating them into the liquid to form micro-nano bubble water.

[0068] This device cleverly simplifies the multi-stage filtration system and pressure regulation module of traditional devices, significantly reducing manufacturing costs and maintenance while ensuring bubble quality. Its compact structure and low energy consumption not only meet the needs of miniaturized household devices, but can also be expanded to efficient production in commercial scenarios. It is particularly suitable for large-scale application in public welfare areas such as drinking water purification and agricultural irrigation.

[0069] In one embodiment, the filter 30 is arranged in the cavity of the housing 10 and located at the downstream portion of the first liquid flow channel 111, which is equivalent to dividing the first liquid flow channel 111 to form the second liquid flow channel 112 around the filter 30. Due to the occupation of the filter 30 in the cavity of the housing 10, the cross-sectional area of the second liquid flow channel 112 is smaller than that of the first liquid flow channel 111, that is, the cross-sectional width of the second liquid flow channel 112 is smaller than that of the first liquid flow channel 111.

[0070] In this way, the liquid enters the second liquid flow channel 112 with a relatively small cross-sectional area from the first liquid flow channel 111 with a relatively large cross-sectional area. Due to the decrease in cross-sectional flow, the fluid flow rate in the second liquid flow channel 112 is greater than that in the first liquid flow channel 111, thereby increasing the speed of the liquid contacting the micro-nano bubbles; the greater the fluid in the second liquid flow channel 112, the more conducive to impacting and carrying away the micro-nano bubbles, thereby improving the efficiency of the liquid and the micro-nano bubbles fusion, and also conducive to controlling the size of the micro-nano bubbles, preventing the liquid flow rate from being slow and the impact effect being poor, resulting in the micro-nano bubbles becoming large and difficult to achieve the effect of generating micro-nano bubble water.

[0071] It is worth mentioning that in the present embodiment, the cross-sectional width of the second liquid flow channel 112 should be controlled within a relatively small range, preferably, the cross-sectional width of the first liquid flow channel 111 is 15 mm, and the cross-sectional width of the second liquid flow channel 112 can be 2-5 mm. The cross-sectional width of the first liquid flow channel 111 can be controlled to be 3-8 times the cross-sectional width of the second liquid flow channel 112.

[0072] The small cross-sectional width of the second liquid flow channel 112 not only can increase the flow rate of the liquid after entering the second liquid flow channel 112 from the first liquid flow channel 111, thereby achieving the above-mentioned effect, but also can ensure the sufficient fusion of the liquid and the micro-nano bubbles. If the cross-sectional width of the second liquid flow channel 112 is large, only the liquid close to the outer surface of the filter 30 can fuse with the micro-nano bubbles when the liquid flows through the second liquid flow channel 112, and the liquid relatively far from the outer surface of the filter 30 cannot contact the micro-nano bubbles, which undoubtedly affects the generation efficiency of the micro-nano bubble water.

[0073] Embodiment 2

[0074] As Figure 3 and Figure 4As shown, this embodiment provides a micro-nano bubble water generating device and another form of housing 10. In the above embodiment, the housing 10 is composed of a first sleeve 11, a second sleeve 12, a third sleeve 13, and a fourth sleeve 14. The first sleeve 11, the second sleeve 12, the third sleeve 13, and the fourth sleeve 14 are structurally matched, requiring customized production, which increases the cost of the equipment.

[0075] In this embodiment, the shell 10 can be assembled using the existing sleeve structure. The first sleeve 11, the second sleeve 12, the third sleeve 13 and the fourth sleeve 14 can be respectively composed of a plurality of matching sleeve units. Each sleeve unit can use a ready-made sleeve in the prior art, which greatly saves costs.

[0076] See Figure 3 and Figure 4 The first sleeve 11 includes three threaded sleeve units with different inner diameters, which are connected to each other through threads. A corresponding sealing structure can be provided at the threaded connection. Similarly, the second sleeve 12 includes two threaded sleeve units with different inner diameters, which are connected to each other, and the outermost threaded sleeve unit is provided with a water inlet 101. The third sleeve 13 includes two threaded sleeve units with different inner diameters, which are connected to each other, and the outermost threaded sleeve unit is provided with a water outlet 102. The fourth sleeve 14 includes two threaded sleeve units with different inner diameters, which are connected to each other, and the outermost threaded sleeve unit is provided with a first locking mechanism 141.

[0077] It can be understood that multiple threaded sleeve units are connected in sequence to form the shell 10, and the threaded sleeve unit connected between two threaded sleeve units realizes the connection and matching of the other two threaded sleeve units. In this way, threaded sleeve units with different inner diameters can be utilized, and the shell 10 can be formed by combining existing material elements. This not only avoids the need to open a mold to produce a new shell, saves costs, but also realizes the recycling and reuse of materials.

[0078] Example 3

[0079] This embodiment provides a micro-nano bubble water generating device, and on the basis of the above embodiment, provides a specific structure of a filter element 30.

[0080] like Figure 1 and Figure 3 As shown, in this embodiment, the filter element 30 adopts a connecting portion 31, a filter side wall 32 and a head end portion 33 connected in sequence; the connecting portion 31 is connected to the air outlet 201; the filter side wall 32 extends from the connecting portion 31 in a direction close to the water inlet 101, and the filter side wall 32 has filter holes for allowing micro-nano bubbles to pass through; the head end portion 33 is arranged at the end of the filter side wall 32 away from the connecting portion 31.

[0081] Preferably, the filter element 30 is cylindrical and corresponds to the inner wall of the housing 10, which is formed with a collar. The filter sidewall 32 is a cylindrical surface that is parallel to the inner wall of the housing 10. The filter element 30 is positioned in the center of the cavity, and the filter sidewall 32 and the head end 33 form a second liquid flow channel 112 with the inner wall of the cavity. The design of the filter element 30 being positioned in the center of the cavity allows the outer side of the filter element 30 to be surrounded by the second liquid flow channel 112, thereby increasing the contact area between the liquid and the surrounding wall of the filter element 30 and improving the efficiency of generating micro-nano bubble water.

[0082] In one embodiment, Figure 1 As shown, the outer diameter of the head end portion 33 gradually decreases from the filter sidewall 32 toward the water inlet 101, so that the flow cross-sectional area of ​​the second liquid flow channel 112 gradually increases. The head end portion 33 is arranged in a conical shape, with its tip facing the water inlet 101, which can serve to divert the liquid from the first liquid flow channel 111, so that the liquid is fully dispersed around the filter element 30 and contacts the filter sidewall 32. In addition, the conical head end portion 33 causes the cross-sectional area (or width) of the inlet end of the second liquid flow channel 112 to decrease along the direction of liquid flow, achieving a smooth transition from the first liquid flow channel 111 to the smaller width of the second liquid flow channel 112, which is conducive to liquid diversion.

[0083] Preferably, when the head end portion 33 is designed to be conical, the surface of the head end portion 33 may also have filter holes for allowing micro-nano bubbles to pass through. The head end portion 33 not only plays a diversion role, but also plays the role of generating micro-nano bubbles like the filtering side wall 32, thereby increasing the contact surface between the filter element 30 and the liquid, and further improving the generation efficiency of micro-nano bubble water.

[0084] Furthermore, the head end 33 is designed to be tapered, and the inner diameter of the housing 10 at the position corresponding to the head end 33 gradually increases from the direction toward the water inlet 101 toward the direction away from the water inlet 101. While the width of the second liquid flow channel 112 is controlled to be small, the inner diameter of the housing 10 gradually increases, thereby allowing the installation of a filter element 30 with a larger radial width. As a result, the width of the second liquid flow channel 112 remains unchanged, increasing the area of ​​the filter sidewall 32 and improving the efficiency of generating micro-nano bubble water.

[0085] In one embodiment, Figure 3 As shown, the head end portion 33 may also be a plane, and the head end portion 33 is perpendicular to the flow direction of the first liquid flow channel 111. In this case, the head end portion 33 may serve as an end cap, and no filter hole is provided for allowing micro-nano bubbles to pass through.

[0086] In one embodiment, the outer diameter of the filter side wall 32 gradually increases from the head end 33 toward the connecting portion 31, and the surface of the filter side wall 32 is designed to be inclined toward the water inlet side, so that the liquid can directly impact the surface of the filter side wall 32, thereby increasing the impact force and facilitating the integration of micro-nano bubbles into the liquid.

[0087] Example 4

[0088] This embodiment provides a micro-nano bubble water generating device. Based on the above embodiment, this embodiment will further introduce the installation structure of the filter element 30.

[0089] like Figure 1 and Figure 3 As shown, a mounting base 40 is provided on the surface of the gas pipe 20 near the gas outlet 201, and the filter element 30 is detachably connected to the mounting base 40. The detachable connection can be a threaded structure or a buckle structure.

[0090] In one embodiment, the mounting base 40 is provided with a threaded mounting hole facing the water inlet side, and the connecting portion 31 of the filter element 30 has external threads. The connecting portion 31 can be installed in the threaded mounting hole via the external threads, thereby achieving a detachable connection between the filter element 30 and the mounting base 40. Furthermore, the length of the threaded connection of the connecting portion 31 relative to the mounting base 40 is adjustable, thereby adjusting the extension length of the filter element 30 relative to the mounting base 40.

[0091] Since the extension length of the filter element 30 relative to the mounting seat 40 is adjustable, the position of the filter element 30 relative to the second liquid flow channel 112 is adjustable, and the combination efficiency of the micro-nano bubbles and the liquid can be adjusted by changing the position of the filter element 30 .

[0092] In this embodiment, the mounting base 40 can be fixed in the inner cavity of the housing 10, or can be set on the gas pipe 20. Figure 1 and Figure 3 The mounting base 40 includes a second locking mechanism 41, which is detachably fixed to the gas pipe 20. The structure and installation principle of the second locking mechanism 41 of this embodiment are the same as those of the first locking mechanism 141 mentioned in the above embodiment. For details, please refer to the above description and will not be repeated in this embodiment.

[0093] Furthermore, if Figure 5 As shown, the mounting base 40 further includes a sealing cover 42, which is located at one end of the mounting base 40 near the filter element 30. The sealing cover 42 may be a rubber ring that mates with the surface of the filter sidewall 32. The sealing cover 42 slidably mates with the surface of the filter sidewall 32 to shield the surface of the filter sidewall 32 and seal the micro-nano bubble filter holes on the surface of the filter sidewall 32.

[0094] In this embodiment, the sealing cover 42 can adjust the area or number of the micro-nano bubble filter holes sealed as the filter element 30 moves relative to the mounting seat 40 .

[0095] That is, when the filter element 30 is adjusted outward, the filter element 30 moves outward relative to the mounting seat 40, and part of the surface of the filter side wall 32 extends outside the sealing cover 42. At this time, the area of ​​the filter side wall 32 used to generate micro-nano bubbles is relatively large, which is used to increase the production of micro-nano bubbles. When the filter element 30 is adjusted inward, the filter element 30 moves inward relative to the mounting seat 40, and part of the surface of the filter side wall 32 retracts into the interior of the sealing cover 42. The sealing cover 42 blocks or seals part of the surface of the filter side wall 32. At this time, the area of ​​the filter side wall 32 used to generate micro-nano bubbles is reduced, which is used to reduce the production of micro-nano bubbles. Therefore, the adjustable filter element 30 of this embodiment and the coordinated design of the sealing cover 42 enable the filter element 30 to adjust the production of micro-nano bubbles to meet the usage needs of different users.

[0096] Example 5

[0097] This embodiment provides a micro-nano bubble water generating device. Based on the above embodiment, this embodiment further improves the structure of the filter element 30.

[0098] Since the filter element 30 needs to satisfy the function of screening micro-nano bubbles, the material of the filter element 30 inevitably makes it have a certain degree of flexibility, and the filtering side wall 32 and the head end 33 of the filter element 30 are suspended. Under the high-speed impact of the liquid, the filter element 30 will inevitably swing or even deform, causing the filter element 30 to contact the inner wall of the cavity of the shell 10, thereby affecting the contact between the liquid and the surface of the filter element 30, resulting in the fusion of micro-nano bubbles and liquid being hindered.

[0099] Based on this, Figure 6 As shown, this embodiment is provided with a plurality of protruding guide plates 34 on the surface of the filter sidewall 32. The guide plates 34 extend toward the connection portion 31 or the head end portion 33. The guide plates 34 are arranged along the extension direction of the filter element 30, thereby guiding the fluid. Furthermore, because the guide plates 34 protrude from the surface of the filter sidewall 32, when the filter element 30 is impacted by liquid and sways or even deforms, the guide plates 34 will abut against the inner wall of the cavity, ensuring that a gap is always maintained between the filter element 30 and the inner wall of the cavity. This ensures that the contact area between the liquid and the surface of the filter element 30 is not affected even when the filter element 30 is in motion.

[0100] Preferably, the guide plate 34 is arranged on the circumference of the filter element 30 to ensure that the contact between the liquid and the micro-nano bubbles is not affected when the filter element 30 is tilted in any direction.

[0101] Furthermore, if Figure 6 and Figure 7 As shown, the height of the guide plate 34 protruding from the surface of the filter side wall 32 gradually increases from the head end 33 to the connecting portion 31, and the side of the guide plate 34 away from the filter side wall 32 has a preset length of abutment wall 341. It can be understood that the abutment wall 341 can be the entire side wall of the guide plate 34.

[0102] Thus, when the filter element 30 is deformed or bent by the impact of liquid, the abutment wall 341 abuts against the inner wall of the cavity. The aforementioned abutment between the guide plate 34 and the inner wall of the cavity may be point contact or localized contact, which lacks stability. In this embodiment, the abutment wall 341 allows the entire side of the guide plate 34 to abut against the inner wall of the cavity, greatly improving the stability of the abutment, preventing the filter element 30 from deforming again, ensuring the strength of the filter element 30, and enabling it to withstand higher-speed liquids.

[0103] As a further improvement, Figure 8 As shown, in one embodiment, the guide plate 34 is provided with a groove 342 extending from one end of the guide plate 34 away from the filtering side wall 32 toward the filtering side wall 32 ; that is, a plurality of grooves 342 are provided on the abutting wall 341 .

[0104] During use, when the liquid passing through the second liquid flow channel 112 impacts the groove 342, a local vortex is formed. The vortex allows the liquid to be fully mixed with the micro-nano bubbles attached to the surface of the filter side wall 32. Moreover, when the second liquid flow channel 112 has a certain width, the local vortex formed can allow liquid relatively far away from the surface of the filter side wall 32 to be fully mixed with the micro-nano bubbles on the surface of the filter side wall 32, thereby improving the efficiency of generating micro-nano bubble water.

[0105] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0106] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A micro-nano bubble water generating device, characterized in that: include: A housing (10), wherein the housing (10) has a cavity therein, and the housing (10) is provided with a water inlet (101) and a water outlet (102) respectively communicating with the cavity; an air delivery pipe (20) passing through the housing (10) and connected to the cavity, thereby having an air outlet (201) located in the cavity; a filter element (30) connected to the gas delivery pipe (20) and located at the gas outlet (201), the filter element (30) being arranged toward the water inlet (101); a first liquid flow channel (111) is formed on the housing (10) at the water inlet (101), and a second liquid flow channel (112) connected to the first liquid flow channel (111) is formed between the housing (10) and the filter element (30); The gas input through the gas delivery pipe (20) enters the cavity after being screened by the filter element (30), and is mixed with the liquid flowing from the first liquid flow channel (111) into the second liquid flow channel (112) to form micro-nano bubble water, which then flows out through the water outlet (102).

2. The micro-nano bubble water generating device according to claim 1, characterized in that: The flow cross-sectional area of ​​the second liquid flow channel (112) is smaller than the flow cross-sectional area of ​​the first liquid flow channel (111).

3. The micro-nano bubble water generating device according to claim 1, characterized in that: The filter element (30) comprises: a connecting portion (31), connected to the air outlet (201); The filtering side wall (32) extends from the connecting portion (31) in a direction close to the water inlet (101), and the filtering side wall (32) has filtering holes for allowing micro-nano bubbles to pass through. The head end portion (33) is arranged at an end of the filtering side wall (33) away from the connecting portion (31).

4. The micro-nano bubble water generating device according to claim 3, characterized in that: The filter element (30) is arranged in the middle of the cavity, and the second liquid flow channel (112) is formed between the filter side wall (32) and the head end (33) and the inner wall of the cavity.

5. The micro-nano bubble water generating device according to claim 4, characterized in that: The outer diameter of the head end portion (33) gradually decreases from the filtering side wall (32) toward the water inlet (101), so that the flow cross-sectional area of ​​the second liquid flow channel (112) gradually increases.

6. The micro-nano bubble water generating device according to claim 5, characterized in that: The inner diameter of the housing (10) at a position corresponding to the head end (33) gradually increases from a direction toward the water inlet (101) toward a direction away from the water inlet (101).

7. The micro-nano bubble water generating device according to claim 4, characterized in that: The outer diameter of the filtering side wall (32) gradually increases from the head end (33) toward the connecting portion (31).

8. The micro-nano bubble water generating device according to any one of claims 3 to 7, characterized in that: A mounting seat (40) is provided on the surface of the air delivery pipe (20) near the air outlet (201); the filter element (30) is detachably connected to the mounting seat (40) via a threaded structure, and the extension length of the filter element (30) relative to the mounting seat (40) is adjustable via the threaded structure.

9. The micro-nano bubble water generating device according to claim 8, characterized in that: The mounting seat (40) further comprises a sealing cover (42), wherein the sealing cover (42) is slidably engaged with the surface of the filtering side wall (32) and is used to shield the surface of the filtering side wall (32) so as to seal the micro-nano bubble filtering holes on the surface of the filtering side wall (32); The sealing cover (42) can adjust the area or number of the micro-nano bubble filter holes sealed as the filter element (30) moves relative to the mounting seat (40).

10. The micro-nano bubble water generating device according to any one of claims 3 to 7, characterized in that: The surface of the filtering side wall (32) is provided with a plurality of protruding guide plates (34), and the guide plates (34) are extended and arranged in the direction of the connecting portion (31) or the head end portion (33); The guide plate (34) is used to abut against the inner wall of the cavity when the filter element (30) is deformed or bent by the impact of liquid.

11. The micro-nano bubble water generating device according to claim 10, characterized in that: The height of the guide plate (34) protruding from the surface of the filtering side wall (32) gradually increases from the head end (33) toward the connecting portion (31), and the side of the guide plate (34) away from the filtering side wall (32) has an abutment wall (341) of a preset length; When the filter element (30) is deformed or bent by the impact of liquid, the abutment wall (341) abuts against the inner wall of the cavity.

12. The micro-nano bubble water generating device according to claim 10, characterized in that: The guide plate (34) is provided with a groove (342) extending from one end of the guide plate (34) away from the filtering side wall (32) toward a direction close to the filtering side wall (32); The liquid passing through the second liquid flow channel (112) impacts the groove (342) to form a vortex, and is mixed with the micro-nano bubbles attached to the surface of the filter side wall (32) to form micro-nano bubble water.

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