A micro-nano bubble generating device

Abstract

The present invention discloses a micro-nano bubble generating device, comprising: a jet component, the jet component 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 for inputting a gas-liquid mixed fluid at one end away from the jet channel; the cross-sectional area of ​​the jet channel is smaller than the cross-sectional area of ​​the gas-liquid access channel and the diffusion chamber; and a bubbler, comprising at least one bubble channel, one end of the bubble channel is a second gas-liquid inlet, the other end is a gas-liquid outlet, the second gas-liquid inlet is connected to the diffusion chamber, and the cross-sectional area of ​​the bubble channel gradually increases from the second gas-liquid inlet to the gas-liquid outlet. The micro-nano bubble generating device first accelerates the flow rate through the jet channel to cause the gas to be violently mixed, and then expands the water-gas mixing volume to allow the high-speed flowing water to impact the gas to generate bubbles, thereby generating more micro-nano bubbles and higher efficiency.

Description

Technical Field

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

[0002] Micro-nano bubbles are bubbles with diameters ranging from hundreds of nanometers to ten microns. These bubbles possess unique physical and chemical properties not found in conventional bubbles. These include large surface area, slow rise, self-pressurized dissolution, surface charge, the ability to generate large amounts of free radicals, and a high gas solubility rate. These bubbles are ideal for applications in aquaculture, soilless cultivation, fruit and vegetable washing, skincare, water environment management, and sewage treatment. Existing bubble generators produce relatively few micro-nano bubbles and are inefficient.

[0003] Therefore, a new technology is needed to solve the problems of small number of micro-nano bubbles generated and low efficiency in the existing technology. Summary of the Invention

[0004] In order to solve the above problems in the prior art, the present invention provides a micro-nano bubble generating device, which can efficiently generate a large number of micro-nano bubbles.

[0005] The present invention adopts the following technical solutions:

[0006] A micro-nano bubble generating device, comprising:

[0007] A jet component, wherein the jet component is provided with a gas-liquid access channel, a jet channel, and a diffusion chamber connected in sequence, wherein an end of the gas-liquid access channel away from the jet channel is provided with a first gas-liquid inlet for inputting a gas-liquid mixed fluid; and the cross-sectional area of ​​the jet channel is smaller than the cross-sectional area of ​​the gas-liquid access channel and the diffusion chamber; and

[0008] The bubbler includes at least one bubble channel, one end of the bubble channel is a second gas-liquid inlet, and the other end is a gas-liquid outlet, the second gas-liquid inlet is connected to the diffusion chamber, and the cross-sectional area of ​​the bubble channel gradually increases from the second gas-liquid inlet to the gas-liquid outlet.

[0009] As a further improvement to the technical solution of the present invention, the cross-sectional area of ​​the diffusion chamber is larger than the cross-sectional area of ​​the gas-liquid access channel.

[0010] As a further improvement of the technical solution of the present invention, the bubbling channel is conical.

[0011] As a further improvement of the technical solution of the present invention, the bubbler also 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.

[0012] As a further improvement to the technical solution of the present invention, the groove wall of the first expansion groove is provided with a protruding structure protruding toward the opening.

[0013] As a further improvement of the technical solution of the present invention, the protruding structure is in the shape of a sheet and / or a ring.

[0014] As a further improvement of the technical solution of the present invention, a second expansion groove communicating with the first expansion groove is further provided on the groove wall of the first expansion groove.

[0015] As a further improvement of the technical solution of the present invention, the jet component is threadedly connected to the bubbler.

[0016] As a further improvement of the technical solution of the present invention, the bubbler includes a plurality of bubblers connected in sequence, and each of the bubblers is provided with the bubble channel;

[0017] The bubbling element at one end is connected to the diffusion chamber of the jet element;

[0018] In two adjacent foaming parts, the gas-liquid outlet of the foaming part close to the jet part is connected to the second gas-liquid inlet of the foaming part far from the jet part.

[0019] As a further improvement to the technical solution of the present invention, two adjacent foaming parts are connected by threads.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The micro-nano bubble generating device of the present invention is provided with jet part and bubbler, gas-liquid access channel is accessed by gas-liquid mixed fluid, the jet channel of jet part enters the bubble channel of bubble part again, because the cross-sectional area of ​​jet channel is less than the cross-sectional area of ​​gas-liquid access channel, diffusion chamber, gas-liquid mixed fluid enters jet channel after pressure increases so that flow velocity is accelerated, after arriving at diffusion chamber, pressure suddenly decreases, forms negative pressure so that water and gas are further mixed together; After entering bubble channel, because the cross-sectional area of ​​bubble channel gradually increases, expand water vapor mixing volume, because gas is light to rise, water flow impacts downward, high-speed flowing water impacts gas, and forms a large number of bubbles in an instant. The present invention first makes water vapor can be violently mixed by accelerating flow velocity, then makes high-speed flowing water impact gas produce bubbles by expanding water vapor mixing volume, so that the micro-nano bubble number produced is more, and efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technology of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 This is a three-dimensional diagram of the first embodiment of the micro-nano bubble generating device;

[0024] Figure 2 is a cross-sectional view of the first embodiment of the micro-nano bubble generating device;

[0025] Figure 3 It is a three-dimensional diagram of the jet component;

[0026] Figure 4 is a cross-sectional view of the jet component;

[0027] Figure 5 It is a three-dimensional diagram of the connection foaming parts;

[0028] Figure 6 is a cross-sectional view of the end foaming piece;

[0029] Figure 7 is a bottom view of the end foaming piece;

[0030] Figure 8 It is a three-dimensional diagram of the connection foaming parts;

[0031] Figure 9 It is a cross-sectional view of the second embodiment of the micro-nano bubble generating device.

[0032] Reference numerals:

[0033] 1- jet component; 11- gas-liquid access channel; 111- first gas-liquid inlet; 12- jet channel; 13- diffusion chamber; 14- first threaded section;

[0034] 2-bubble generator; 21-bubble member; 211-bubble channel; 2111-second gas-liquid inlet; 2112-gas-liquid outlet; 212-first expansion groove; 213-protrusion structure; 214-second expansion groove; 215-internal thread; 201-connecting bubble member; 2011-second threaded section; 202-end bubble member; DETAILED DESCRIPTION

[0035] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0036] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, terms such as "upper," "lower," "left," and "right" used in this disclosure are intended solely to describe the relative positions of the components of the disclosure as shown in the accompanying drawings.

[0037] Reference Figures 1 to 9 , a micro-nano bubble generating device, comprising a jet element 1 and a bubbler 2.

[0038] Among them, reference Figures 1 to 4 The jet element 1 comprises a sequentially connected gas-liquid inlet channel 11, a jet channel 12, and a diffusion chamber 13. A first gas-liquid inlet 111 is provided at the end of the gas-liquid inlet channel 11, distal from the jet channel 12, for inputting a gas-liquid mixed fluid. The cross-sectional area of ​​the jet channel 12 is smaller than that of the gas-liquid inlet channel 11 and the diffusion chamber 13. The gas-liquid mixed fluid enters through the first gas-liquid inlet 111 and sequentially passes through the gas-liquid inlet channel 11, the jet channel 12, and the diffusion chamber 13. Because the cross-sectional area of ​​the jet channel 12 is smaller than that of the gas-liquid inlet channel 11, the pressure suddenly increases upon entering the jet channel 12, accelerating the flow through the jet channel 12 and increasing the impact force of the water flow, which facilitates the subsequent generation of bubbles. After entering the diffusion chamber 13 from the jet channel 12, the fluid is rapidly ejected. Because the cross-sectional area of ​​the jet channel 12 is smaller than that of the diffusion chamber 13, the pressure suddenly decreases, creating a negative pressure at the outlet of the jet channel 12, further dissolving the gas in the water.

[0039] The gas-liquid mixed fluid here is water with bubbles. The gas-liquid inlet of the water inlet connector can be connected to a Venturi ejector. When water flows through the Venturi ejector, it draws in air, forming a gas-liquid mixed fluid that is then fed into the gas-liquid inlet of the water inlet connector. The cross-sectional area of ​​the diffusion chamber 13 is larger than that of the gas-liquid access channel 11, thereby increasing the pressure difference and boosting the solubility of bubbles in the water.

[0040] Reference Figure 1 、 Figure 2 、 Figures 5 to 9The bubbler 2 includes at least one bubble channel 211, one end of which is a second gas-liquid inlet 2111 and the other end is a gas-liquid outlet 2112. The second gas-liquid inlet 2111 is connected to the diffusion chamber 13, and the cross-sectional area of ​​the bubble channel 211 gradually increases from the second gas-liquid inlet 2111 to the gas-liquid outlet 2112. The gas-liquid mixed fluid from the diffusion chamber 13 enters the bubble channel 211 from the second gas-liquid inlet 2111. Since the cross-sectional area of ​​the bubble channel 211 gradually increases from the second gas-liquid inlet 2111 to the gas-liquid outlet 2112, the gas-water mixed volume is expanded, the pressure gradually decreases, and the gas dissolved in the water turns into bubbles. The high-speed impact of the water flow on the gas instantly forms a large number of micro-nano bubbles. In addition, under normal circumstances, when in use, the micro-nano bubble generating device is vertical, with the jet element 1 at the top and the bubbler 2 at the bottom. Because the gas rises gently and the water flow impacts downward, the high-speed water impacts the gas, and the two mix violently, thereby forming a large number of micro-nano bubbles instantly. In one embodiment, the bubbling channel 211 is tapered. There can be only one bubbling channel 211 or multiple bubbling channels 211 that are all connected to the diffusion chamber 13.

[0041] Based on the above structure, the present invention first accelerates the flow rate to mix the water and gas violently, and then expands the water and gas mixing volume to allow the high-speed flowing water to impact the gas to generate bubbles, thereby generating more micro-nano bubbles and higher efficiency.

[0042] Preferably, refer to Figure 1 、 Figure 2 、 Figures 5 to 9 The bubbler 2 also includes a first expansion tank 212 connected to the second gas-liquid inlet 2111. The first expansion tank 212 is in communication with the second gas-liquid inlet 2111, and an opening is provided at one end of the first expansion tank 212 away from the second gas-liquid inlet 2111. The provision of the first expansion tank 212 can increase the water-gas mixing volume and store some of the gas that is not dissolved in water, allowing the cavity to accommodate more gas and facilitate the generation of more bubbles. The gas-liquid mixed fluid enters the first expansion tank 212 from the diffusion chamber 13 and impacts the tank wall of the first expansion tank 212, causing the gas and liquid to mix more violently, thereby increasing the number of nano-micro bubbles.

[0043] Preferably, refer to Figure 1 、 Figure 2 、 Figures 5 to 9The wall of the first expansion groove 212 is provided with a raised structure 213 that protrudes toward the opening. After the bubbles enter the first expansion groove 212, they impact the raised structure 213, further mixing the gas, liquid, and water in the gas-liquid mixed fluid, generating more bubbles. Specifically, the raised structure 213 is sheet-shaped and / or annular. In one embodiment, the raised structure 213 is annular and sheet-shaped. The annular raised structure 213 is located in the middle, and several sheet-shaped raised structures 213 are located on the outside of the annular raised structure 213 and are radially arranged, dividing the first expansion groove 212 into several blocks, each of which is provided with a bubbling channel 211.

[0044] Preferably, refer to Figure 1 、 Figure 2 、 Figures 5 to 9 A second expansion groove 214 connected to the first expansion groove 212 is further provided on the groove wall of the first expansion groove 212. The second expansion groove 214 further increases the gas-liquid mixing volume, which can increase the water-gas mixing volume and store some gas that is not dissolved in water, so that the cavity can accommodate more gas, which is convenient for generating more bubbles.

[0045] The jet element 1 is threadedly connected to the bubbler 2. Specifically, the jet element 1 is provided with a first threaded section 14, which is provided with an external thread. The bubbler 2 is provided with an internal thread 215, which can be threadedly connected to the first threaded section 14, thereby achieving the connection between the jet element 1 and the bubbler 2. In addition, a sealing ring is provided between the jet element 1 and the bubbler 2 to ensure that the connection between the two does not leak.

[0046] In one embodiment, Figure 1 As shown, the bubbler 2 has only one bubbler 21 .

[0047] In addition, the bubbler 2 has other settings. The bubbler 2 includes a plurality of bubbler parts 21 connected in sequence, and each of the bubbler parts 21 is provided with the bubble channel 211; the second gas-liquid inlet 2111 of the bubbler part 21 at one end is connected to the diffusion chamber 13 of the jet part 1; in two adjacent bubbler parts 21, the gas-liquid outlet 2112 of the bubbler part 21 close to the jet part 1 is connected to the second gas-liquid inlet 2111 of the bubbler part 21 away from the jet part 1. By increasing the number of bubbler parts 21, the content and efficiency of the micro-nano bubbles in the gas-liquid mixed fluid that is finally discharged can be improved. Accordingly, each bubbler part 21 is provided with a first expansion groove 212, a second expansion groove 214, and a protruding structure 213.

[0048] Two adjacent bubble members 21 are threadedly connected. The bubble members 21 are divided into two categories based on their specific location: connecting bubble members 201 and terminal bubble members 202. The connecting bubble member 201 has an internal thread 215 at one end and a second thread segment 2011 at the other end. The second thread segment 2011 is externally threaded. The internal thread 215 can connect to the first thread segment 14 of the fluidic member 1 or to the second thread segment 2011 of another bubble member 21. The terminal bubble member 202 has only an internal thread 215 and no external thread segment. It connects to the second thread segment 2011 of the preceding bubble member 21 via the internal thread 215.

[0049] In one embodiment, Figure 9 As shown, the bubbler 2 includes two bubble generating parts 21 , and the structure of the micro-nano bubble generating device is the jet part 1 , the connecting bubble generating part 201 and the terminal bubble generating part 202 in sequence.

[0050] In another embodiment, the bubbler 2 includes three bubble generating members 21. The structure of the micro-nano bubble generating device is sequentially composed of the jet member 1, the connecting bubble generating member 201, the connecting bubble generating member 201, and the terminal bubble generating member 202. Similarly, the number of bubble generating members 21 in the bubbler 2 can be greater. Except for one terminal bubble generating member 202, the rest are connecting bubble generating members 201.

[0051] For other details of the micro-nano bubble generating device described in the present invention, please refer to the prior art and will not be repeated here.

[0052] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A micro-nano bubble generating device, characterized in that: include: A jet component, wherein the jet component is provided with a gas-liquid access channel, a jet channel, and a diffusion chamber connected in sequence, wherein an end of the gas-liquid access channel away from the jet channel is provided with a first gas-liquid inlet for inputting a gas-liquid mixed fluid; and the cross-sectional area of ​​the jet channel is smaller than the cross-sectional area of ​​the gas-liquid access channel and the diffusion chamber. as well as a bubbler comprising at least one bubble channel, one end of the bubble channel being a second gas-liquid inlet and the other end being a gas-liquid outlet, the second gas-liquid inlet being in communication with the diffusion chamber, and the cross-sectional area of ​​the bubble channel gradually increasing from the second gas-liquid inlet to the gas-liquid outlet; The cross-sectional area of ​​the diffusion chamber is larger than the cross-sectional area of ​​the gas-liquid access channel; The bubbler further includes a first expansion tank connected to the second gas-liquid inlet, the first expansion tank is in communication with the second gas-liquid inlet, and an end of the first expansion tank away from the second gas-liquid inlet is provided with an opening; The groove wall of the first expansion groove is provided with a protruding structure protruding toward the opening; The protruding structure is in the form of a sheet and / or a ring; The jet component is threadedly connected to the bubbler.

2. The micro-nano bubble generating device according to claim 1, characterized in that: The bubbling channel is cone-shaped.

3. The micro-nano bubble generating device according to claim 1, characterized in that: A second expansion groove communicating with the first expansion groove is further provided on the groove wall of the first expansion groove.

4. The micro-nano bubble generating device according to any one of claims 1 to 3, characterized in that: The bubbler comprises a plurality of bubblers connected in sequence, and each bubbler is provided with the bubble channel; The bubbling element at one end is connected to the diffusion chamber of the jet element; In two adjacent foaming parts, the gas-liquid outlet of the foaming part close to the jet part is connected to the second gas-liquid inlet of the foaming part far from the jet part.

5. The micro-nano bubble generating device according to claim 4, characterized in that: Two adjacent foaming pieces are connected by threads.

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