A nano-bubble jet device

Abstract

The application discloses a kind of nano bubble jet flow devices, it is related to jet flow device technical field.The jet flow pipe is formed with the jet flow through hole for bubble water flow inside, the jet flow through hole includes water inlet and water outlet;The plugging structure is arranged on the jet flow pipe, and the plugging structure has first working state and second working state, when the plugging structure is in first working state, for plugging the water outlet, when the plugging structure is in second working state, annular gap is formed between the plugging structure and water outlet.The application is designed by annular gap, so that when high-pressure bubble water flows along annular gap, its spray form is horn-shaped, and then opposite horn-shaped bubble water can form collision, cutting and scattering, and the production precision requirement of nano bubble jet flow device is not high, when installing, when nano bubble jet flow device is slightly offset, it also basically does not affect production effect.

Description

Technical Field

[0001] This invention relates to the field of jet ejector technology, specifically to a nanobubble jet ejector. Background Technology

[0002] Tiny bubbles in a liquid can be categorized into microbubbles (over 1000 nm in diameter), micro-nanobubbles (between 200 nm and 1000 nm in diameter), and nanobubbles (under 200 nm in diameter). Water containing nanobubbles can be stably and permanently stored under certain conditions, and its applications are quite extensive. For example, it has been applied to some extent in mineral flotation, environmental water treatment, and biomedical engineering.

[0003] Currently, there are various methods for manufacturing nanobubble water on the market. These include labyrinth cutting, hydrodynamic cavitation, and jet cutting. While labyrinth cutting can generate a large number of nanobubbles, its flow rate is very small, and the equipment is extremely expensive to manufacture, requiring very high precision, and is generally only suitable for laboratory production. Hydrodynamic cavitation has a very large flow rate, matching the number of bubbles to the flow rate, and is low-cost and has low processing requirements, but the bubble size is difficult to adjust, only controllable within a general range, resulting in poor consistency in bubble size. Jet cutting produces nanobubble water by placing two beams of high-pressure water bubbles opposite each other. The opposing high-pressure water bubbles impact, cut, and disperse the tiny bubbles inside, forming even smaller nanobubbles. However, current symmetrical cutting methods require extremely high precision in the jet injector manufacturing; even a slight misalignment of the oppositely positioned injector can significantly affect the production effect. For example, patent document CN212450732U, entitled "Micro / Nano Bubble Jet Maker," provides a similar jet injector. Meanwhile, the flow rate generated by jet cutting is relatively small, so this method of producing nano bubble water is not commonly used. Summary of the Invention

[0004] The purpose of this invention is to provide a nanobubble jet generator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a nanobubble jet generator, comprising: a jet tube, wherein the interior of the jet tube has a jet flow hole for the flow of bubble water, the jet flow hole including an inlet and an outlet; a sealing structure, wherein the sealing structure is disposed on the jet tube, and the sealing structure has a first working state and a second working state. When the sealing structure is in the first working state, it is used to seal the outlet. When the sealing structure is in the second working state, an annular gap is formed between the sealing structure and the outlet. The diameter of the annular gap gradually increases along a first direction from the inlet to the outlet. The first direction is parallel to the flow direction of the bubble water. The sealing structure can freely switch between the first working state and the second working state by means of the bubble water pressure inside the jet flow hole.

[0006] In a preferred embodiment of this technical solution, the sealing structure includes: a sealing head having a frustum portion, the axis of which is parallel to a first direction; a first frustum hole opened on the outlet of the jet pipe, the first frustum hole coinciding with the axis of the frustum portion; and an elastic component for generating a contact force along the first direction between the frustum portion and the inner wall of the first frustum hole. When the bubble water pressure is less than the contact force, the side of the frustum portion fits against the inner wall of the first frustum hole; when the bubble water pressure is greater than the contact force, an annular gap is formed between the frustum portion and the inner wall of the first frustum hole.

[0007] In a preferred embodiment of this technical solution, the elastic component comprises: a connecting horizontal column extending along a second direction, and a movable gap being formed between the connecting horizontal column and the jet tube along a first direction, wherein the second direction is perpendicular to the first direction; two rubber sleeves respectively fitted onto both ends of the connecting horizontal column and embedded in the inner wall of the jet tube; and a connecting vertical column extending along the first direction, wherein a first end of the connecting vertical column is connected to the connecting horizontal column, and a second end of the connecting vertical column is connected to the sealing head.

[0008] In a preferred embodiment of this technical solution, it further includes: an adjustment structure, which is used to adjust the magnitude of the contact force between the frustum portion and the inner wall of the first frustum hole.

[0009] In a preferred embodiment of this technical solution, the adjusting structure includes: a connecting tube corresponding to a rubber sleeve, the connecting tube being disposed on the jet tube, and a limiting groove for accommodating the rubber sleeve being formed in the connecting tube, the axis of the connecting tube extending along a second direction; and an adjusting knob corresponding to a connecting tube, the adjusting knob being threadedly connected to the connecting tube, and the adjusting knob being used to compress the rubber sleeve located in the limiting groove, the adjusting knob being in the shape of a regular hexagonal prism.

[0010] In this preferred embodiment, the rubber sleeve is provided with a bearing inside, the bearing is sleeved with the connecting horizontal column, and the second end of the connecting vertical column is hinged to the sealing head through a hinge assembly.

[0011] In a preferred embodiment of this technical solution, the hinge assembly includes: a pair of hinge blocks disposed on the sealing head, the second end of the connecting vertical column being located between the two hinge blocks; and a hinge column, the axis of which extends along a third direction, the third direction being perpendicular to the first direction and the second direction respectively, the hinge column being fixed between the two hinge blocks, and the hinge column penetrating the connecting vertical column.

[0012] In this preferred embodiment, both the connecting horizontal column and the connecting vertical column are hollow tubular structures, and the connecting horizontal column has multiple through holes, the axis of which is parallel to the first direction; the first end of the connecting vertical column passes through the connecting horizontal column, and a limit block is provided at the first end of the connecting vertical column.

[0013] In a preferred embodiment of this technical solution, a second frustum hole is further provided on the outlet of the jet pipe. The centerlines of the first frustum hole and the second frustum hole coincide, and the first frustum hole and the second frustum hole are arranged sequentially from the outlet to the inlet along a first direction. The regions formed by the cross-sectional edges of the frustum portion, the first frustum hole, and the second frustum hole are respectively a first isosceles trapezoid, a second isosceles trapezoid, and a third isosceles trapezoid, wherein: the centerline of the frustum portion is located within the cross-section, the lower base angles of the first isosceles trapezoid and the second isosceles trapezoid are equal, and the lower base angle of the third isosceles trapezoid is greater than the lower base angle of the second isosceles trapezoid.

[0014] Preferably, this technical solution further includes: a connecting part, which is disposed on the jet pipe and is used to connect with the bubble water pipe and connect the water inlet and the bubble water pipe; the connecting part is a threaded pipe or a pipe joint.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This nanobubble jet ejector, through its annular gap design, ensures that when high-pressure bubble water flows out along the annular gap, its ejection shape is funnel-shaped. This allows the opposing funnel-shaped bubble water to collide, cut, and disperse. The manufacturing precision requirements for the nanobubble jet ejector are not high. During installation, even a small deviation of the nanobubble jet ejector will not significantly affect the production effect, thereby greatly reducing the manufacturing cost of the nanobubble jet ejector.

[0017] Meanwhile, because the water jets from both directions are funnel-shaped, the production of nanobubble water can be increased compared to a single water jet, thus enhancing its market competitiveness compared to labyrinth cutting equipment and hydrodynamic cavitation equipment. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 For the present invention Figure 2 Enlarged view of section A;

[0021] Figure 4 This is a perspective view of the jet tube proposed in this invention;

[0022] Figure 5 This is a cross-sectional view of the jet tube proposed in this invention;

[0023] Figure 6 This is a perspective view of the sealing structure proposed in this invention;

[0024] Figure 7 This is a cross-sectional view of the sealing structure proposed in this invention.

[0025] In the diagram: 1. Jet tube; 11. Connecting part; 12. Connecting pipe; 13. Limiting groove; 14. First frustum hole; 15. Second frustum hole; 16. Jet passage; 17. Moving clearance; 2. Adjusting knob; 3. Rubber sleeve; 4. Bearing; 5. Connecting horizontal column; 51. Through hole; 6. Connecting vertical column; 61. Limiting block; 7. Sealing head; 71. Hinge block; 72. Hinge column; 73. Frustum part. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that in the description of this invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0028] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0030] This invention provides a technical solution: a nanobubble jet ejector, comprising: a jet tube 1, such as... Figure 5 As shown, the interior of the jet pipe 1 has a jet flow hole 16 for the flow of bubble-filled water, and the jet flow hole 16 includes an inlet and an outlet; the sealing structure, such as... Figure 2 As shown, the sealing structure is installed on the jet pipe 1, and the sealing structure has a first working state and a second working state. When the sealing structure is in the first working state, it is used to block the water outlet. When the sealing structure is in the second working state, an annular gap is formed between the sealing structure and the water outlet. The diameter of the annular gap gradually increases along the first direction from the water inlet to the water outlet. The first direction is parallel to the flow direction of the bubble water. The sealing structure can freely switch between the first working state and the second working state through the pressure of the bubble water inside the jet orifice 16.

[0031] It is important to understand that during use, the jet pipe 1 can be welded to the bubble water pipe. The jet pipe 1 also includes a connecting part 11, which is disposed on the jet pipe 1 and used to connect to the bubble water pipe, linking the inlet and the bubble water pipe. Specifically, the connecting part 11 can be various types, such as common pipe fittings, quick couplings, and hose clamps. In this embodiment, the connecting part 11 is a threaded pipe with external threads on the outside and internal threads on the inner wall of the bubble water pipe; the external and internal threads are compatible. When the nanobubble jet injector of this invention is used for jet cutting, the two nanobubble jet injectors are positioned facing each other. When the bubble water pipe is not supplying high-pressure bubble water to the jet flow hole 16 inside the jet pipe 1, the sealing structure is in its first working state, capable of sealing the jet flow hole 16 and preventing bubble water backflow. High-pressure bubble water is further supplied to the interior of jet pipe 1 through the bubble water pipe. When the pressure is high enough, the sealing structure changes from the first working state to the second working state, that is, an annular gap is formed between the sealing structure and the outlet, and the diameter of the annular gap gradually increases from the inlet to the outlet along the first direction, which is parallel to the flow direction of the bubble water. The high-pressure bubble water inside jet pipe 1 can then flow out from the annular gap, and the ejected bubble water is funnel-shaped. The opposing funnel shapes can thus create a counter-current, cutting, and dispersion effect. The manufacturing precision requirements for the nanobubble jet injector are not high, and even a small deviation of the nanobubble jet injector during installation will not significantly affect the production effect.

[0032] From the above, we can see that the sealing structure should be a flexible structure. This sealing structure can be any type of structure, as long as it can achieve the aforementioned functions. Any sealing structure that can achieve these functions is protected by this invention. This invention proposes a specific sealing structure, such as... Figure 2 and Figure 3 As shown, the sealing structure includes: a sealing head 7, on which a frustum 73 is provided, the axis of which is parallel to a first direction; a first frustum hole 14 opened on the outlet of the jet pipe 1, the axis of which coincides with that of the frustum 73; and an elastic component that generates a contact force along the first direction between the frustum 73 and the inner wall of the first frustum hole 14. When the bubble water pressure is less than the contact force, the side of the frustum 73 fits against the inner wall of the first frustum hole 14. When the bubble water pressure is greater than the contact force, an annular gap is formed between the frustum 73 and the inner wall of the first frustum hole 14.

[0033] It is important to understand that, for the purpose of flow guidance, high-pressure bubble water can be ejected in a funnel shape from the annular gap. A second frustum-shaped hole 15 is also provided on the outlet of the jet pipe 1. The axes of the first frustum-shaped hole 14 and the second frustum-shaped hole 15 coincide, and the first frustum-shaped hole 14 and the second frustum-shaped hole 15 are arranged sequentially from the outlet to the inlet along a first direction. In this invention, a frustum-shaped hole refers to a hole that forms a frustum-shaped physical space. The frustum-shaped portion 73 is also a frustum-shaped entity. For example... Figure 2 and Figure 5 As shown, the regions formed by the cross-sectional edges of the frustum portion 73, the first frustum hole 14, and the second frustum hole 15 are respectively a first isosceles trapezoid, a second isosceles trapezoid, and a third isosceles trapezoid. The axis of the frustum portion 73 lies within the cross-section; the lower base angles of the first and second isosceles trapezoids are equal; and the lower base angle of the third isosceles trapezoid is greater than that of the second isosceles trapezoid. This design causes the flow path of the bubble water to gradually decrease as it is ejected along the annular gap. As described above, the annular gap is formed only when the pressure of the bubble water within the jet orifice 16 is greater than the external pressure. When the high-pressure bubble water flows out of the annular gap, its flow path gradually decreases, further increasing the internal pressure of the bubble water. After the bubble water flows out of the annular gap, the pressure in its environment suddenly decreases. Consequently, due to the cavitation effect, the bubbles inside the bubble water will form multiple smaller bubbles. This structure is more conducive to manufacturing smaller nanobubbles. The principle of using cavitation effect to create microbubbles is a very mature theory, so it will not be elaborated on here.

[0034] Specifically, the lower base angle of the first isosceles trapezoid ranges from 30° to 45°, and can be any one of the following degrees: 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, and 45°, or any degree between adjacent degrees mentioned above. The lower base angle of the third isosceles trapezoid ranges from 50° to 65°, and can be any one of the following degrees: 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64°, and 65°, or any degree between adjacent degrees mentioned above.

[0035] In one embodiment of the present invention, such as Figure 2 and Figure 3As shown, the elastic component includes: a connecting horizontal column 5 extending along a second direction perpendicular to the first direction. A movable gap 17 along the first direction is formed between the connecting horizontal column 5 and the jet tube 1. This movable gap 17 means that both ends of the connecting horizontal column 5 are respectively inserted into the inner wall of the jet tube 1, and the connecting horizontal column 5 can move freely along the first direction; the range of its movement is the length of the movable gap 17 along the first direction. A connecting vertical column 6 extending along the first direction, with its first end connected to the connecting horizontal column 5 and its second end connected to the sealing head 7. It is important to understand that the size of the annular gap can be controlled by the size of the movable gap 17.

[0036] Specifically, elastic elements can be provided at both ends of the connecting crossbar 5, and these elastic elements and the connecting crossbar 5 can generate a spring force along the first direction. The elastic elements can be of various types, such as a telescopic spring, wherein the axis of the telescopic spring extends along the first direction. In this embodiment, as shown... Figure 3 As shown, the elastic element consists of two rubber sleeves 3, which are respectively fitted onto both ends of the connecting horizontal column 5 and embedded in the inner wall of the jet pipe 1. Since the rubber sleeves 3 are made of rubber, they are elastic. When the high-pressure bubble water in the jet orifice 16 tries to break through the sealing head 7 to form an annular gap and escape from the jet orifice 16, the pressure exerted by the high-pressure bubble water on the sealing head 7 needs to be greater than the resistance force formed between the sealing head 7 and the first frustum hole 14. Simultaneously, when the sealing head 7 moves away from the outlet along the first direction, the sealing head 7 can drive the connecting horizontal column 5 to move along the first direction via the connecting vertical column 6. When the connecting horizontal column 5 moves along the first direction, the rubber sleeves 3 can apply a force along the first direction to the connecting horizontal column 5, preventing it from moving along the first direction. The greater the distance the connecting horizontal column 5 moves along the first direction, the greater this force becomes. When the pressure of the bubble water in the jet orifice 16 decreases until the pressure exerted by the bubble water on the sealing head 7 is less than the elastic resistance generated by the rubber sleeve 3, the connecting horizontal column 5 can be reset under the elastic force of the rubber sleeve 3. Furthermore, the connecting horizontal column 5 can drive the sealing head 7 to reset via the connecting vertical column 6.

[0037] As described above, in this embodiment, the rubber sleeve 3 restricts the movement of the connecting crossbar 5 along the first direction. The greater the elastic resistance generated by the rubber sleeve 3 against the connecting crossbar 5, the greater the pressure of the bubble water in the jet orifice 16, which is needed to break through the sealing head 7. Therefore, to facilitate the use of the nanobubble jet ejector in this invention, the nanobubble jet ejector further includes: an adjustment structure, which is used to adjust the magnitude of the contact force between the frustum portion 73 and the inner wall of the first frustum hole 14. Specifically, in this embodiment, as... Figure 3 and Figure 4As shown, the adjustment structure includes: a connecting pipe 12 corresponding to the rubber sleeve 3, the connecting pipe 12 being disposed on the jet pipe 1, and a limiting groove 13 for accommodating the rubber sleeve 3 being formed in the connecting pipe 12, the axis of the connecting pipe 12 extending along the second direction; and an adjusting knob 2 corresponding to the connecting pipe 12, the adjusting knob 2 being threadedly connected to the connecting pipe 12, and the adjusting knob 2 being used to press the rubber sleeve 3 located in the limiting groove 13.

[0038] Specifically, such as Figure 3 As shown, the connection between the adjusting knob 2 and the connecting tube 12 can be varied, such as... Figure 3 As shown, the adjusting knob 2 is threadedly connected to the connecting pipe 12, and the height of the rubber sleeve 3 along the second direction is greater than the depth of the limiting groove 13 along the second direction. That is, the rubber sleeve 3 protrudes from the limiting groove 13. When the adjusting knob 2 is turned, the rubber sleeve 3 located inside the limiting groove 13 will be squeezed or loosened. Since the rubber sleeve 3 is fitted onto the connecting cross post 5, the rubber sleeve 3 under different compression states can generate different lateral compressive forces on the connecting cross post 5. Thus, the elastic resistance generated by the rubber sleeve 3 when the connecting cross post 5 moves along the first direction can be adjusted in this way.

[0039] In another embodiment of the invention, the height of the rubber sleeve 3 along the second direction can be less than the depth of the limiting groove 13 along the second direction. In this case, only a compression post needs to be provided in the adjusting knob 2. The axis of the compression post extends along the second direction to compress the rubber sleeve 3. Furthermore, to facilitate adjustment via the adjusting knob 2, the adjusting knob 2 can be of various shapes, such as various prismatic shapes, allowing the user to rotate it using pipe wrenches or a wrench. Preferably, such as… Figure 1 As shown, adjustment knob 2 is in the shape of a regular hexagonal prism.

[0040] It is important to understand that, in order to further reduce the manufacturing precision of the nanobubble jet generator of this invention, a bearing 4 is provided inside the rubber sleeve 3. The bearing 4 is sleeved with the connecting horizontal column 5, and the second end of the connecting vertical column 6 is hinged to the sealing head 7 via a hinge assembly. This design can avoid the sealing head 7 from shifting during sealing due to rigid connection, resulting in incomplete sealing. Or, during water discharge, the annular gap may be uneven due to the shift of the sealing head 7, leading to uneven water discharge.

[0041] Specifically, such as Figure 6 As shown, the hinge assembly includes: a pair of hinge blocks 71 disposed on the sealing head 7, the second end of the connecting column 6 being located between the two hinge blocks 71; and a hinge column 72, the axis of which extends along a third direction, the third direction being perpendicular to the first direction and the second direction respectively, the hinge column 72 being fixed between the two hinge blocks 71, and the hinge column 72 penetratingly connecting the vertical column 6.

[0042] It is important to understand that the connecting horizontal column 5 and the connecting vertical column 6 will be subjected to the impact of high-pressure bubble water during use, therefore, they need to be made of relatively expensive alloys. Furthermore, when the cross-sectional area is constant, the mechanical strength of a hollow tube is superior to that of a solid column. Therefore, in this invention, as... Figure 7 As shown, both the connecting horizontal column 5 and the connecting vertical column 6 are hollow tubular structures. To reduce the impact of high-pressure bubble water on the connecting horizontal column 5, multiple through holes 51 are provided on it, with the axis of each through hole 51 parallel to the first direction. This ensures consistent pressure on the inner and outer walls of the connecting horizontal column 5 during use, thereby extending its service life. Furthermore, the first end of the connecting vertical column 6 penetrates the connecting horizontal column 5, and a limit block 61 is provided at the first end of the connecting vertical column 6.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nanobubble jet generator, characterized in that, include: The jet pipe (1) has a jet hole (16) inside for the flow of bubble water, and the jet hole (16) includes an inlet and an outlet. A blocking structure is provided on the jet pipe (1), and the blocking structure has a first working state and a second working state. When the blocking structure is in the first working state, it is used to block the water outlet. When the blocking structure is in the second working state, an annular gap is formed between the blocking structure and the water outlet. The diameter of the annular gap gradually increases along the first direction from the water inlet to the water outlet. The first direction is parallel to the flow direction of the bubble water. The blocking structure can freely switch between the first working state and the second working state through the bubble water pressure inside the jet hole (16). The sealing structure includes: A sealing head (7) is provided with a frustum (73), the axis of which is parallel to the first direction; A first frustum hole (14) is opened on the outlet of the jet pipe (1), and the first frustum hole (14) coincides with the axis of the frustum portion (73); An elastic component is provided to generate a contact force in a first direction between the frustum portion (73) and the inner wall of the first frustum hole (14). When the bubble water pressure is less than the contact force, the side of the frustum portion (73) is in contact with the inner wall of the first frustum hole (14). When the bubble water pressure is greater than the contact force, the annular gap is formed between the frustum portion (73) and the inner wall of the first frustum hole (14). The elastic component includes: A connecting column (5) extends along a second direction, and a moving gap (17) is formed between the connecting column (5) and the jet tube (1) along a first direction, wherein the second direction is perpendicular to the first direction; Two rubber sleeves (3) are respectively fitted onto the two ends of the connecting cross column (5), and the rubber sleeves (3) are embedded in the inner wall of the jet tube (1); A connecting vertical column (6) is extended along a first direction, and the first end of the connecting vertical column (6) is connected to the connecting horizontal column (5), and the second end of the connecting vertical column (6) is connected to the sealing head (7). The outlet of the jet pipe (1) is also provided with a second frustum hole (15). The axis of the first frustum hole (14) and the second frustum hole (15) coincides, and the first frustum hole (14) and the second frustum hole (15) are arranged sequentially from the outlet to the inlet along the first direction. The regions formed by the cross-sectional edges of the frustum portion (73), the first frustum hole (14), and the second frustum hole (15) are respectively a first isosceles trapezoid, a second isosceles trapezoid, and a third isosceles trapezoid, wherein: the axis of the frustum portion (73) is located within the cross-section, the lower base angles of the first and second isosceles trapezoids are equal, and the lower base angle of the third isosceles trapezoid is greater than the lower base angle of the second isosceles trapezoid; When nanobubble jets are required for counter-cutting, two nanobubble jets should be positioned facing each other.

2. The nanobubble jet generator according to claim 1, characterized in that, The second end of the connecting column (6) is hinged to the sealing head (7) via a hinge assembly; the hinge assembly includes: A pair of hinge blocks (71) are provided on the sealing head (7), and the second end of the connecting column (6) is located between the two hinge blocks (71); The hinge post (72) has its axis extending along a third direction, which is perpendicular to the first direction and the second direction respectively. The hinge post (72) is fixed between the two hinge blocks (71) and passes through the connecting vertical post (6).

3. The nanobubble jet generator according to claim 1, characterized in that, Both the connecting horizontal column (5) and the connecting vertical column (6) are hollow tubular structures, and the connecting horizontal column (5) has multiple through holes (51), the axis of the through holes (51) being parallel to the first direction; The first end of the connecting vertical column (6) passes through the connecting horizontal column (5), and a limit block (61) is provided at the first end of the connecting vertical column (6).

4. The nanobubble jet generator according to claim 1, characterized in that, It also includes: a connecting part (11), which is disposed on the jet pipe (1) and is used to connect with the bubble water pipe and connect the water inlet and the bubble water pipe; the connecting part (11) is a pipe joint.

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