A micro-nano bubble generation system

Abstract

The present invention discloses a micro-nano bubble generation system, comprising: a gas-liquid mixer, which includes an air inlet channel, a liquid inlet channel and a mixing channel. One end of the mixing channel is connected to the air inlet channel and the liquid inlet channel, and the other end is a first gas-liquid outlet; a pump body, which is connected to the first gas-liquid outlet; and a bubble generation device, which includes a jet member and a bubbler. The jet member is provided with a gas-liquid access channel, a jet channel and a diffusion chamber. The gas-liquid access channel is provided with a first gas-liquid inlet connected to the pump body. The cross-sectional area of the jet channel is smaller than the cross-sectional areas of the gas-liquid access channel and the diffusion chamber. The bubbler includes at least one bubbling channel. One end of the bubbling channel is a second gas-liquid inlet, and the other end is a second gas-liquid outlet. The second gas-liquid inlet is communicated with the diffusion chamber, and the cross-sectional area of the bubbling channel gradually increases from the second gas-liquid inlet to the second gas-liquid outlet. In this micro-nano bubble generation system, through multiple gas-liquid mixing, it can generate water containing a large number of micro-nano bubbles, with a high bubble concentration and good effects.

Description

Technical Field

[0001] The present invention belongs to the field of water treatment equipment, and particularly relates to a micro-nano bubble generating system. Background Art

[0002] Micro-nano bubbles refer to bubbles with a diameter of several hundred nanometers to about ten micrometers when generated. Such bubbles have physical and chemical properties that conventional bubbles do not possess, such as a large specific surface area, a slow rising speed, self-pressurizing dissolution, surface charging, the ability to generate a large number of free radicals, and a high gas dissolution rate. They can be preferably applied to the fields of aquaculture, soilless cultivation, fruit and vegetable cleaning, beauty and skin care, water environment treatment, and sewage treatment.

[0003] The existing bubble generating systems usually only undergo gas-liquid mixing once, resulting in a small number of micro-nano bubbles, a low bubble concentration, and relatively poor effects.

[0004] Therefore, a new technology is needed to solve the problems of few gas-liquid mixing times, few micro-nano bubbles generated, and low bubble concentration in the prior art. Summary of the Invention

[0005] To solve the above problems in the prior art, the present invention provides a micro-nano bubble generating system, which undergoes multiple gas-liquid mixings, can generate water containing a large number of micro-nano bubbles, has a high bubble concentration, and good effects.

[0006] The present invention adopts the following technical solutions:

[0007] A micro-nano bubble generating system, comprising:

[0008] A gas-liquid mixer, comprising an air inlet channel, a liquid inlet channel, and a mixing channel. One end of the mixing channel is connected to the air inlet channel and the liquid inlet channel, and the other end is a first gas-liquid outlet;

[0009] A pump body, which is connected to the first gas-liquid outlet; and

[0010] A bubble generating device, comprising a jet member and a foaming device; the jet member is provided with a gas-liquid access channel, a jet channel, and a diffusion chamber connected in sequence. The gas-liquid access channel is provided with a first gas-liquid inlet connected to the pump body; the cross-sectional area of the jet channel is smaller than the cross-sectional areas of the gas-liquid access channel and the diffusion chamber; the foaming device includes at least one foaming channel. One end of the foaming channel is a second gas-liquid inlet, and the other end is a second gas-liquid outlet. The second gas-liquid inlet is communicated with the diffusion chamber, and the cross-sectional area of the foaming channel gradually increases from the second gas-liquid inlet to the second gas-liquid outlet.

[0011] As a further improvement of the technical solution of the present invention, the liquid inlet channel includes a liquid inlet section and a first jet section connected to the liquid inlet section. The liquid inlet section has a constant cross-section and one end is a liquid inlet. The first jet section has a constant cross-section and one end is a liquid outlet connected to the mixing channel. The cross-sectional area of the liquid inlet is larger than the cross-sectional area of the liquid outlet.

[0012] As a further improvement of the technical solution of the present invention, the mixing channel includes a mixing section and a second jet section. The mixing section is connected to the air inlet channel and the liquid inlet channel, and the first gas-liquid outlet is provided in the second jet section. The mixing section and the second jet section both have a constant cross-section, and the cross-sectional area of the mixing section is larger than the cross-sectional area of the liquid outlet, and the cross-sectional area of the first gas-liquid outlet is larger than the cross-sectional area of the liquid inlet.

[0013] As a further improvement of the technical solution of the present invention, it further includes a liquid supply device connected to the liquid inlet channel. The liquid supply device includes a liquid supply pipe and a first control valve for controlling the on-off of the liquid supply pipe.

[0014] As a further improvement of the technical solution of the present invention, it further includes a gas supply device connected to the air inlet channel. The gas supply device includes a gas supply pipe, a second control valve for controlling the on-off of the gas supply pipe, and a check valve provided on the gas supply pipe.

[0015] As a further improvement of the technical solution of the present invention, the bubbler further includes a first expansion tank connected to the second gas-liquid inlet. The first expansion tank is communicated with the second gas-liquid inlet, and an opening is provided at one end of the first expansion tank away from the second gas-liquid inlet. A second expansion tank communicated with the first expansion tank is further provided on the tank wall of the first expansion tank.

[0016] As a further improvement of the technical solution of the present invention, the tank wall of the first expansion tank is provided with a convex structure protruding towards the opening.

[0017] As a further improvement of the technical solution of the present invention, the gas-liquid mixer is a Venturi injector.

[0018] As a further improvement of the technical solution of the present invention, the bubbler includes a plurality of bubbling members connected in sequence. Each bubbling member is provided with the bubbling channel. The bubbling member at one end is connected to the diffusion chamber of the jet member. Among two adjacent bubbling members, the gas-liquid outlet of the bubbling member close to the jet member is connected to the second gas-liquid inlet of the bubbling member away from the jet member.

[0019] As a further improvement of the technical solution of the present invention, the bubble generating device further includes a gas-liquid outlet joint, which is provided with a gas-liquid collecting cavity and a terminal connecting portion for connecting to a water outlet terminal. The gas-liquid collecting cavity is communicated with the second gas-liquid outlet.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In the micro-nano bubble generating system of the present invention, a gas-liquid mixer and a bubble generating device are provided. Gas and liquid enter the mixing channel from the gas inlet channel and the liquid inlet channel of the gas-liquid mixer respectively, and are mixed for the first time in the gas-liquid mixer, and then input into the pump body from the mixing channel. The pump body accelerates the discharge speed of the gas-liquid mixed fluid in the gas-liquid mixer, enabling the gas-liquid mixer to increase the air intake, and the gas-liquid mixed fluid is accelerated and pumped in the pump body for the second gas-liquid mixing; then it is input into the bubble generating device again. The gas-liquid mixed fluid is connected through the gas-liquid access channel, enters the foaming channel of the foam generator through the jet channel of the jet part, and undergoes the third gas-liquid mixing. Through multiple gas-liquid mixings, the present invention generates more micro-nano bubbles, greatly improves the bubble concentration, and has a higher efficiency in generating micro-nano bubbles.

[0022] 2. In the bubble generating device, since the cross-sectional area of the jet channel is smaller than that of the gas-liquid access channel and the diffusion chamber, the pressure of the gas-liquid mixed fluid increases and the flow rate accelerates after entering the jet channel. When it reaches the diffusion chamber, the pressure suddenly decreases, forming a negative pressure that further mixes water and gas together; after entering the foaming channel, since the cross-sectional area of the foaming channel gradually increases, expanding the water-gas mixing volume, because the gas is light and rises upward, the water flow impacts downward, and the high-speed water flow impacts the gas, instantly forming a large number of bubbles. The present invention first makes the water and gas mix violently by accelerating the flow rate, and then generates bubbles by expanding the water-gas mixing volume and allowing the high-speed water flow to impact the gas, thereby generating more micro-nano bubbles and having a higher efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following further details the technology of the present invention in conjunction with the drawings and specific embodiments:

[0024] Figure 1 is a connection schematic diagram of the present micro-nano bubble generating system;

[0025] Figure 2 is a three-dimensional view of the gas-liquid mixer;

[0026] Figure 3 is a cross-sectional view of the gas-liquid mixer;

[0027] Figure 4 is a three-dimensional view of the bubble generating device in the first embodiment;

[0028] Figure 5 is a cross-sectional view of the bubble generating device in the first embodiment;

[0029] Figure 6 is a three-dimensional view of the jet part;

[0030] Figure 7 Is a perspective view of the end foaming part;

[0031] Figure 8 Is a cross-sectional view of the end foaming part;

[0032] Figure 9 Is a bottom view of the end foaming part;

[0033] Figure 10 Is a cross-sectional view of the bubble generating device in the second embodiment;

[0034] Figure 11 Is a perspective view of the connecting foaming part;

[0035] Figure 12 Is a perspective view of the bubble generating device in the third embodiment;

[0036] Figure 13 Is a cross-sectional view of the bubble generating device in the third embodiment;

[0037] Figure 14 Is a perspective view of the bubble generating device in the fourth embodiment;

[0038] Figure 15 Is a cross-sectional view of the bubble generating device in the fourth embodiment.

[0039] Reference numerals:

[0040] 1 - Gas-liquid mixer; 11 - Air inlet channel; 12 - Liquid inlet channel; 121 - Liquid inlet section; 1211 - Liquid inlet; 122 - First jet section; 1222 - Liquid outlet; 13 - Mixing channel; 131 - First gas-liquid outlet; 132 - Mixing section; 133 - Second jet section;

[0041] 2 - Pump body; 3 - Bubble generating device;

[0042] 31 - Jet part; 311 - Gas-liquid access channel; 3111 - First gas-liquid inlet; 312 - Jet channel; 313 - Diffusion chamber; 314 - First threaded section;

[0043] 32 - Bubbler; 321 - Foaming part; 3211 - Foaming channel; 32111 - Second gas-liquid inlet; 32112 - Second gas-liquid outlet; 3212 - First expansion tank; 3213 - Protrusion structure; 3214 - Second expansion tank; 3215 - First internal thread; 3216 - Second threaded section; 3201 - Connecting foaming part; 3202 - End foaming part;

[0044] 33 - Gas-liquid outlet joint; 331 - Gas-liquid collection chamber; 332 - Terminal connection part; 333 - Second internal threaded section.

[0045] 4 - Liquid supply device; 41 - Liquid supply pipe; 42 - First control valve; 5 - Gas supply device; 51 - Gas supply pipe; 52 - Second control valve; 53 - Check valve. Detailed implementation mode

[0046] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments and drawings to fully understand the purpose, scheme and effects of the present invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0047] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right, etc. descriptions used in the present invention are only relative to the mutual positional relationship of the components of the present invention in the drawings.

[0048] Refer to Figures 1 to 15 , a micro - nano bubble generation system, comprising a gas - liquid mixer 1, a pump body 2 and a bubble generation device 3.

[0049] Among them, as Figure 2 and Figure 3 shown, the gas - liquid mixer 1 includes an air inlet passage 11, a liquid inlet passage 12 and a mixing passage 13. One end of the mixing passage 13 is connected to the air inlet passage 11 and the liquid inlet passage 12, and the other end is a first gas - liquid outlet 131. The pump body 2 is connected to the first gas - liquid outlet 131. The air inlet passage 11 is used to input gas (such as air), the liquid inlet passage 12 is used to input liquid (such as water), and the mixing passage 13 is used to mix the input gas and liquid. This is the first mixing. The mixed gas - liquid mixture then discharges from the first gas - liquid outlet 131 to the pump body 2, and the pump body 2 pumps and delivers it to the bubble generation device. The gas and liquid are drawn into the pump and can be discharged from the pump, experiencing the second gas - liquid mixing. Among them, the pump body 2 can be a booster pump. In one embodiment, the gas - liquid mixer 1 is a Venturi injector, and the preliminary mixing of gas and liquid is completed through the Venturi injector. Of course, the present invention also discloses other implementation modes of the gas - liquid mixer 1, which will be described in detail below.

[0050] Among them, as Figures 4 to 15 shown, the bubble generation device 3 includes a jet part 31 and a foamer 32.

[0051] As Figure 4 and Figure 5As shown, the jet member 31 is provided with a gas-liquid access channel 311, a jet channel 312 and a diffusion chamber 313 that are connected in sequence. The gas-liquid access channel 311 is provided with a first gas-liquid inlet 3111 connected to the pump body 2; the cross-sectional area of the jet channel 312 is smaller than the cross-sectional areas of the gas-liquid access channel 311 and the diffusion chamber 313. The gas-liquid mixed fluid comes out of the pump body 2 and is input into the first gas-liquid inlet 3111, and sequentially passes through the gas-liquid access channel 311, the jet channel 312 and the diffusion chamber 313. Since the cross-sectional area of the jet channel 312 is smaller than the cross-sectional area of the gas-liquid access channel 311, therefore, after entering the jet channel 312, the pressure will suddenly increase, which will accelerate the flow speed in the jet channel 312, improve the water flow impact force, and is conducive to the generation of subsequent foaming. After entering the diffusion chamber 313 from the jet channel 312, it is ejected quickly. Since the cross-sectional area of the jet channel 312 is smaller than the cross-sectional area of the diffusion chamber 313, the pressure suddenly decreases, thereby forming a negative pressure at the outlet of the jet channel 312, making the gas further dissolve in the water. In one embodiment, the cross-sectional area of the diffusion chamber 313 is larger than the cross-sectional area of the gas-liquid access channel 311 to increase the pressure difference and improve the dissolution amount of bubbles in the water.

[0052] As Figures 5 to 11 shown, the bubbler 32 includes at least one bubbling channel 3211. One end of the bubbling channel 3211 is a second gas-liquid inlet 32111, and the other end is a second gas-liquid outlet 32112. The second gas-liquid inlet 32111 communicates with the diffusion chamber 313, and the cross-sectional area of the bubbling channel 3211 gradually increases from the second gas-liquid inlet 32111 to the second gas-liquid outlet 32112. The gas-liquid mixed fluid coming out of the diffusion chamber 313 enters the bubbling channel 3211 from the second gas-liquid inlet 32111. Since the cross-sectional area of the bubbling channel 3211 gradually increases from the second gas-liquid inlet 32111 to the second gas-liquid outlet 32112, the gas-water mixing volume is expanded, the pressure gradually decreases, the gas dissolved in the water becomes bubbles, and the high-speed impact of the water flow on the gas instantaneously forms a large number of micro-nano bubbles, which are discharged from the second gas-liquid outlet 32112. This is the third mixing of gas and liquid.

[0053] In addition, generally, during use, the bubble generating device 3 is vertical, the jet member 31 is above, and the bubbler 32 is below. Because the gas is light and rises upward, the water flow impacts downward, and the high-speed flowing water impacts the gas, and the two are violently mixed, thus instantaneously forming a large number of micro-nano bubbles. In one embodiment, the bubbling channel 3211 is conical. There can be only one bubbling channel 3211, or there can be multiple bubbling channels 3211 all connected to the diffusion chamber 313.

[0054] Specifically, as Figure 2 and Figure 3As shown, the liquid inlet channel 12 includes a liquid inlet section 121 and a first jet section 122 connected to the liquid inlet section 121. The liquid inlet section 121 has a constant cross-section and one end is a liquid inlet 1211. The first jet section 122 has a constant cross-section and one end is a liquid outlet 1222 connected to the mixing channel 13. The cross-sectional area of the liquid inlet 1211 is larger than that of the liquid outlet 1222. Liquid is input from the liquid inlet 1211 and discharged to the mixing channel 13 from the liquid outlet 1222. Since the cross-sectional area of the liquid inlet section 121 is larger than that of the liquid outlet 1222, the flow rate of the liquid increases when passing through the jet section, so that the liquid can quickly rush into the mixing channel 13 and be violently mixed and dissolved with the gas in the mixing channel 13, which is beneficial to the generation of micro-nano bubbles. In one embodiment, the connection between the liquid inlet section 121 and the jet section is tapered.

[0055] Specifically, as Figure 2 and Figure 3 shown, the mixing channel 13 includes a mixing section 132 and a second jet section 133. The mixing section 132 is connected to the air inlet channel 11 and the liquid inlet channel 12. The first gas-liquid outlet 131 is provided in the second jet section 133. The input gas and liquid are first mixed in the mixing section 132, and then enter the second jet section 133. After passing through the second jet section 133, they are discharged from the first gas-liquid outlet 131 to the pump body 2. Among them, the mixing section 132 and the second jet section 133 both have a constant cross-section, that is, they can be pipe sections, and the cross-sectional area of the mixing section 132 is larger than that of the liquid outlet 1222. After the liquid enters the mixing section 132, due to the sudden increase in space, suction is generated, so that the gas and liquid in the air inlet channel 11 and the liquid inlet channel 12 are sucked in more quickly, further intensifying the gas-liquid mixing. The cross-sectional area of the first gas-liquid outlet 131 is larger than that of the liquid inlet 1211, that is, the outlet flow rate is greater than the inlet flow rate, and naturally gas is sucked in from the air inlet channel 11.

[0056] Preferably, as Figure 1 shown, the micro-nano bubble generating system further includes a liquid supply device connected to the liquid inlet channel 12. The liquid supply device includes a liquid supply pipe 41 and a first control valve 42 for controlling the on-off of the liquid supply pipe 41. The liquid supply pipe 41 can be connected to a faucet or other water sources. The first control valve 42 can be an electromagnetic valve, and the channel can be automatically controlled by a controller. More preferably, a pressure stabilizing valve is further provided on the liquid supply pipe 41.

[0057] Similarly, as Figure 1As shown, the micro-nano bubble generation system further includes a gas supply device 5 connected to the air inlet passage 11. The gas supply device 5 includes a gas supply pipe 51, a second control valve 52 for controlling the on-off of the gas supply pipe 51, and a check valve 53 provided on the gas supply pipe 51. The second control valve 52 can be a solenoid valve, and the controller can automatically control the passage. More preferably, an air filtering device and / or a flow regulating valve are further provided on the gas supply pipe 51. The air filtering device can filter the air entering the gas-liquid mixer 1 to filter dust and bacteria in the air. The check valve can prevent the liquid in the gas-liquid mixer 1 from overflowing from the gas supply pipe 51 due to excessive pressure in the gas-liquid mixer 1. The flow regulating valve can control the flow rate of the gas entering the gas supply pipe 51, and different flow rates can be selected according to specific usage conditions.

[0058] Specifically, as Figure 5 and Figure 8 shown, the bubbler 32 further includes a first expansion tank 3212 connected to the second gas-liquid inlet 32111. The first expansion tank 3212 is communicated with the second gas-liquid inlet 32111, and an opening is provided at one end of the first expansion tank 3212 away from the second gas-liquid inlet 32111. The setting of the first expansion tank 3212 can increase the gas-liquid mixing volume and store part of the gas that is not dissolved in water, so that more gas can be accommodated in the cavity, which is convenient for generating more bubbles. The gas-liquid mixed fluid enters the first expansion tank 3212 from the diffusion chamber 313 and impacts on the tank wall of the first expansion tank 3212, making the gas and liquid mix more violently together, thereby increasing the number of nano micro bubbles.

[0059] Preferably, as Figure 5 、 Figure 8 and Figure 9 shown, the tank wall of the first expansion tank 3212 is provided with a convex structure 3213 protruding towards the opening. After the bubbles enter the first expansion tank 3212, they impact the convex structure 3213, and the gas, liquid and water in the gas-liquid mixed fluid are further mixed to generate more bubbles. Specifically, the convex structure 3213 is in the shape of a sheet and / or a ring. In one embodiment, the convex structure 3213 has a ring shape and a sheet shape. The ring-shaped convex structure 3213 is located in the middle, and several sheet-shaped convex structures 3213 are located outside the ring-shaped convex structure 3213 and are radially arranged, dividing the first expansion tank 3212 into several blocks, and a bubbling channel 3211 is provided in each block.

[0060] Furthermore, as Figure 5 、 Figure 8 and Figure 9As shown, a second expansion slot 3214 communicating with the first expansion slot 3212 is further provided on the slot wall of the first expansion slot 3212. The second expansion slot 3214 further increases the gas-liquid mixing volume. It can increase the water-gas mixing volume and can also store some gases that are not dissolved in water, enabling the cavity to accommodate more gases and facilitating the generation of more bubbles.

[0061] Among them, as Figure 4 and Figure 5 shown, the jet member 31 is threadedly connected to the bubbler 32. Specifically, the jet member 31 is provided with a first threaded section 314 with an external thread provided thereon, and the bubbler 32 is provided with an internal thread, and the internal thread can be threadedly connected to the first threaded section 314, thereby realizing the connection between the jet member 31 and the bubbler 32. In addition, a sealing ring is provided between the jet member 31 and the bubbler 32 to ensure that there is no leakage at the connection between the two.

[0062] In one embodiment, as Figure 4 shown, the bubbler 32 has only one bubbling member 321.

[0063] In addition, the bubbler 32 has other setting forms. As Figures 10 to 15 shown, the bubbler 32 includes a plurality of bubbling members 321 connected in sequence, and each bubbling member 321 is provided with the bubbling channel 3211; the second gas-liquid inlet 32111 of the bubbling member 321 at one end is connected to the diffusion chamber 313 of the jet member 31; among two adjacent bubbling members 321, the second gas-liquid outlet 32112 of the bubbling member 321 close to the jet member 31 is connected to the second gas-liquid inlet 32111 of the bubbling member 321 far from the jet member 31. By increasing the number of bubbling members 321, the content and efficiency of micro-nano bubbles in the finally discharged gas-liquid mixed fluid can be improved. Correspondingly, a first expansion slot 3212, a second expansion slot 3214, and a convex structure 3213 are provided on each bubbling member 321.

[0064] As Figure 10 shown, two adjacent bubbling members 321 are threadedly connected.

[0065] As Figures 7 to 11 shown, the bubbling member 321 can be classified according to its specific position into a connecting bubbling member 3201 and a terminal bubbling member 3202. One end of the connecting bubbling member 3201 is provided with an internal thread, and the other end is provided with a second threaded section 3216 with an external thread thereon. The internal thread can be connected to the first threaded section 314 of the jet member 31 or to the second threaded section 3216 of another bubbling member 321. The terminal bubbling member 3202 is only provided with an internal thread and has no external threaded section, and it is connected to the second threaded section 3216 of the previous bubbling member 321 through the internal thread.

[0066] In one embodiment, as Figure 10 shown, the bubbler 32 includes two bubbling members 321, and the structure of the bubble generating device 3 is successively the jet member 31, the connecting bubbling member 3201, and the terminal bubbling member 3202.

[0067] In another embodiment, the bubbler 32 includes three bubbling members 321, and the structure of the micro-nano bubble generating device 3 is successively the jet member 31, the connecting bubbling member 3201, the connecting bubbling member 3201, and the terminal bubbling member 3202. Similarly, the number of bubbling members 321 in the bubbler 32 can be more. Except for one terminal bubbling member 3202, the rest are connecting bubbling members 3201.

[0068] In a specific implementation, it may be necessary to input the prepared water rich in micro-nano bubbles into the cleaning device. Therefore, for the convenience of connecting the bubble generating device 3 to the cleaning device, as Figures 12 to 15 shown, the bubble generating device 3 further includes a gas-liquid outlet joint 33, which is provided with a gas-liquid collecting cavity 331 and a terminal connecting portion 332 for connecting to the water outlet terminal. The gas-liquid collecting cavity 331 is communicated with the second gas-liquid outlet 32112. Among them, the water outlet terminal can be the water outlet faucet or the water outlet pipe of the cleaning device. Therefore, the terminal connecting portion 332 can be set as a hollow tube, communicated with the gas-liquid collecting cavity 331, and can be inserted into the water outlet pipe of the cleaning device to achieve connection. The gas-liquid collecting cavity 331 is communicated with the second gas-liquid outlet 32112, and can receive the liquid (such as bubble water) containing a large number of micro-nano bubbles generated by the bubbler 32, and input it into the water outlet terminal of the cleaning device from the terminal connecting portion 332. In addition, there are multiple bubbling channels 3211 on the bubbler 32, which can be 2 - 20, for example, 5. In one embodiment, there are 10 bubbling channels 3211, and all these bubbling channels 3211 are communicated with the gas-liquid collecting cavity 331. A gas-liquid collecting cavity 331 collects the liquid containing a large number of micro-nano bubbles generated by each bubbling channel 3211 and inputs them into the water outlet terminal together.

[0069] Among them, as Figure 13 and Figure 15 shown, the gas-liquid outlet joint 33 is threadedly connected to the bubbler 32. The bubbler 32 is provided with a second thread section 3216, and the gas-liquid outlet joint 33 is provided with a second internal thread section matching the second thread section 3216.

[0070] In one embodiment, as Figure 14 shown, the bubbler 32 includes two bubbling members 321, and the structure of the bubble generating device 3 is successively the jet member 31, the bubbling member 321, the bubbling member 321, and the gas-liquid outlet joint 33.

[0071] In another embodiment, the bubbler 32 includes three bubbling members 321. Then the structure of the bubble generating device 3 is successively a jet member 31, bubbling members 321, bubbling members 321, bubbling members 321, and a gas-liquid outlet joint 33.

[0072] Similarly, in the bubble generating device 3, the number of the bubbling members 321 in the bubbler 32 can be more. The jet member 31 and the gas-liquid outlet joint 33 are respectively at the head and the tail, and the middle is successively connected bubbling members 321.

[0073] For other contents of the micro-nano bubble generating system described in the present invention, reference can be made to the prior art and will not be elaborated here.

[0074] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A micro-nano bubble generation system, characterized in that, Comprising: A gas-liquid mixer, including an air inlet channel, a liquid inlet channel, and a mixing channel. One end of the mixing channel is connected to the air inlet channel and the liquid inlet channel, and the other end is a first gas-liquid outlet. A pump body, which is connected to the first gas-liquid outlet; and A bubble generating device, including a jetting member and a bubbler; the jetting member is provided with a gas-liquid access channel, a jetting channel, and a diffusion chamber that are connected in sequence. The gas-liquid access channel is provided with a first gas-liquid inlet connected to the pump body; the cross-sectional area of the jetting channel is smaller than the cross-sectional areas of the gas-liquid access channel and the diffusion chamber; the bubbler includes at least one bubbling channel, one end of the bubbling channel is a second gas-liquid inlet, and the other end is a second gas-liquid outlet. The second gas-liquid inlet is communicated with the diffusion chamber, and the cross-sectional area of the bubbling channel gradually increases from the second gas-liquid inlet to the second gas-liquid outlet; the bubbler further includes a first expansion tank connected to the second gas-liquid inlet, the first expansion tank is communicated with the second gas-liquid inlet, and one end of the first expansion tank away from the second gas-liquid inlet is provided with an opening; a second expansion tank communicated with the first expansion tank is further provided on the tank wall of the first expansion tank. The bubbler includes a plurality of bubbling members connected in sequence, and each bubbling member is provided with the bubbling channel; the bubbling member at one end is connected to the diffusion chamber of the jetting member; among two adjacent bubbling members, the second gas-liquid outlet of the bubbling member close to the jetting member is connected to the second gas-liquid inlet of the bubbling member far from the jetting member.

2. The micro-nano bubble generation system according to claim 1, wherein: The liquid inlet channel includes a liquid inlet section and a first jetting section connected to the liquid inlet section. The liquid inlet section has a constant cross-section and one end is a liquid inlet, and the first jetting section has a constant cross-section and one end is a liquid outlet connected to the mixing channel. The cross-sectional area of the liquid inlet is larger than the cross-sectional area of the liquid outlet.

3. The micro-nano bubble generation system according to claim 2, characterized in that: The mixing channel includes a mixing section and a second jetting section. The mixing section is connected to the air inlet channel and the liquid inlet channel, and the first gas-liquid outlet is arranged on the second jetting section; the mixing section and the second jetting section have a constant cross-section, and the cross-sectional area of the mixing section is larger than the cross-sectional area of the liquid outlet, and the cross-sectional area of the first gas-liquid outlet is larger than the cross-sectional area of the liquid inlet.

4. The micro-nano bubble generation system according to claim 1, wherein: It further includes a liquid supply device connected to the liquid inlet channel. The liquid supply device includes a liquid supply pipe and a first control valve for controlling the on-off of the liquid supply pipe.

5. The micro-nano bubble generation system according to claim 1, characterized in that: It further includes a gas supply device connected to the air inlet channel. The gas supply device includes a gas supply pipe, a second control valve for controlling the on-off of the gas supply pipe, and a check valve arranged on the gas supply pipe.

6. The micro-nano bubble generation system according to claim 1, wherein: The tank wall of the first expansion tank is provided with a convex structure protruding towards the opening.

7. The micro-nano bubble generation system according to claim 1, wherein: The gas-liquid mixer is a Venturi injector.

8. The micro-nano bubble generation system according to claim 1, wherein: The bubble generating device further includes a gas-liquid outlet joint, which is provided with a gas-liquid collecting cavity and a terminal connecting portion for connecting to a water outlet terminal. The gas-liquid collecting cavity is communicated with the second gas-liquid outlet.

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