Microbubble generating device

Abstract

The utility model relates to a microbubble generating device which comprises a shell and a lower cover detachably connected to the bottom of the shell in a sealed mode, the top of the shell is communicated with a connecting port, a water outlet is formed in the bottom of the lower cover, and a microbubble generator is inserted into the shell in a sealed mode. A filter, a first pore plate and a second pore plate are sequentially arranged on the lower side of the microbubble generator from top to bottom, the second pore plate can rotate to adjust the water yield of the water outlet, the first pore plate and the second pore plate are both installed on the lower cover, and the upper side face and the lower side face of the filter are in contact sealing with the microbubble generator and the first pore plate respectively; the micro-bubble generator has the advantage of ensuring the stability of the generation quantity of micro-bubbles.

Description

Technical Field

[0001] The utility model belongs to the technical field of microbubble generating devices, and particularly relates to a microbubble generating device. Background Art

[0002] Microbubbles are bubbles with a diameter generally between 1 micron and 1 millimeter. Due to their special physical and chemical properties, they have a wide range of applications in many fields, such as medical imaging, environmental engineering, food processing, materials science, etc.

[0003] At present, a Chinese patent with the authorization announcement number CN214287608U discloses a microbubble generating device, which includes a water inlet seat, an air inlet body, a bubble cutting assembly, a fixing seat and a housing. The water inlet seat includes a first and a second water inlet channels, and the water inlet cross-sectional area of the second water inlet channel is larger than that of the first water inlet channel. The water inlet seat is provided with an air inlet through hole, and the air inlet through hole is arranged corresponding to the position of the second water inlet channel. The air inlet through hole and the air inlet body cooperate with each other to form an air flow channel; the ratio of the water inflow of the water inlet seat to the air inflow of the air inlet body is greater than 80 times. When in use, water flows through the first and second water inlet channels and then forms an air-water mixture after mixing with it, and is cut through the filter assembly to obtain microbubbles. However, this technical solution cannot adjust the water outlet pressure according to the water inlet pressure of the first water inlet channel, so that the stability of the microbubble generation amount cannot be guaranteed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a microbubble generating device that can ensure the stability of the microbubble generation amount.

[0005] The technical solution of the utility model is as follows:

[0006] A microbubble generating device includes a housing and a lower cover detachably and sealingly connected to the bottom of the housing. A connection port is communicated with the top of the housing, and a water outlet is opened at the bottom of the lower cover. A microbubble generator is hermetically inserted into the housing. A filter, a first orifice plate and a second orifice plate are sequentially arranged from top to bottom on the lower side of the microbubble generator. The second orifice plate can rotate to adjust the water output of the water outlet. The first orifice plate and the second orifice plate are both installed on the lower cover, and the upper and lower sides of the filter are respectively in contact and sealed with the microbubble generator and the first orifice plate.

[0007] Further, the microbubble generator is sequentially provided with a first conical channel, a flow path and a second conical channel that are communicated from top to bottom. The first conical channel is communicated with the connection port and the diameter of the first conical channel gradually decreases from top to bottom. The diameter of the flow path is less than or equal to the minimum diameter of the first conical channel. The diameter of the second conical channel gradually increases from top to bottom;

[0008] An annular groove is provided on the outer circumferential side of the microbubble generator. A negative pressure generating chamber is formed between the annular groove and the inner wall of the housing. The negative pressure generating chamber is provided with a communication hole communicating with the flow path.

[0009] Furthermore, both the maximum diameter and the minimum diameter of the first conical channel are smaller than the maximum diameter and the minimum diameter of the second conical channel.

[0010] Furthermore, water outlet holes are provided at the water outlet on both the first orifice plate and the second orifice plate.

[0011] Furthermore, the first orifice plate is provided with at least two mounting holes, and the second orifice plate is provided with at least two arc-shaped holes. The two arc-shaped holes are concentric with the second orifice plate. The arc-shaped holes and the mounting holes are fixed to the lower cover by bolts.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model generates microbubbles through a microbubble generator, and adjusts the rotation angle of the second orifice plate so that the holes on the second orifice plate are misaligned with the holes on the first orifice plate, thereby realizing the adjustment of the water discharge volume at the water outlet, facilitating the adjustment of the water discharge volume at the water outlet according to the pressure of the connection port, and ensuring the stability of the microbubble generation amount;

[0014] In summary, the present utility model has the advantage of ensuring the stability of the microbubble generation amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is for the present utility model Figure 1 schematic structural diagram of the second orifice plate;

[0017] Figure 3 is for the present utility model Figure 1 schematic structural diagram of the first orifice plate.

[0018] In the figure, 1, connection port; 2, first conical channel; 3, housing; 4, negative pressure generating chamber; 5, flow path; 6, second conical channel; 7, filter; 8, second orifice plate; 81, arc-shaped hole; 82, water outlet hole; 9, lower cover; 10, water outlet; 11, first orifice plate; 111, mounting hole; 12, communication hole; 13, microbubble generator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figures 1-3 shown, a microbubble generating device includes a housing 3 and a lower cover 9 detachably and sealingly connected to the bottom of the housing 3. The detachable and sealing connection method is that the lower cover 9 is installed on the housing 3 through a thread and a gasket. A connection port 1 is communicated with the top of the housing 3, and a water outlet 10 is opened at the bottom of the lower cover 9. A microbubble generator 13 is hermetically inserted into the housing 3 through a sealing ring. The sealing rings are arranged on the upper and lower sides of the microbubble generator 13. A filter 7, a first orifice plate 11, and a second orifice plate 8 are sequentially arranged on the lower side of the microbubble generator 13 from top to bottom. The second orifice plate 8 can rotate to adjust the water output of the water outlet 10. The first orifice plate 11 and the second orifice plate 8 are both installed on the lower cover 9. The upper and lower side surfaces of the filter 7 are respectively in contact and sealed with the microbubble generator 13 and the first orifice plate 11;

[0021] The filter 7 is a sponge-like filter 7. A filter cover is further provided on the filter 7. The filter cover is a cover for fixing the filter 7 in the housing 3 and is a net-like member with a predetermined stiffness. The filter 714 and the filter cover 15 are arranged to cover the discharge port;

[0022] Water outlet holes 82 are opened at the water outlet 10 on both the first orifice plate 11 and the second orifice plate 8;

[0023] During use, the connection port is connected to an external water supply device. The second orifice plate 8 is adjusted according to the pressure of the connection port to adjust the water output of the water outlet 10. Then, the water flow enters the microbubble generator 13 through the communication hole 12, thereby generating microbubbles. The microbubbles are discharged after passing through the filter 7, the first orifice plate 11, and the second orifice plate 8. Through the adjustment of the second orifice plate 8, the water output of the water outlet 10 is adapted to the water inlet pressure of the communication hole 12, ensuring the stability of microbubble generation.

[0024] In this embodiment, the microbubble generator 13 is successively provided with a first conical channel 2, a flow path 5, and a second conical channel 6 that are connected and communicate with each other from top to bottom. The diameters of the first conical channel 2, the flow path 5, and the second conical channel 6 are D1, D2, and D3 respectively. Among them, the first conical channel 2 and the flow path 5 are flow velocity acceleration channels, and the second conical channel 6 is a flow velocity deceleration channel. The first conical channel 2 is connected to the connection port 1 and the diameter of the first conical channel 2 gradually decreases from top to bottom. The diameter of the flow path 5 is less than or equal to the minimum diameter of the first conical channel 2. The diameter of the second conical channel 6 gradually increases from top to bottom;

[0025] An annular groove is provided on the outer circumferential side of the microbubble generator 13. A negative pressure generation chamber 4 is formed between the annular groove and the inner wall of the outer shell 3. The negative pressure generation chamber 4 is provided with a communication hole 12 that communicates with the flow path 5;

[0026] Preferably, both the maximum diameter and the minimum diameter of the first conical channel 2 are less than the maximum diameter and the minimum diameter of the second conical channel 6;

[0027] During use, the liquid entering from the communication port increases in flow velocity after passing through the flow velocity increasing channel. Then, the liquid enters the flow velocity deceleration channel, and cavitation with a decrease in water pressure occurs in the liquid flowing through the flow velocity deceleration channel. Due to this cavitation, bubbles are generated in the liquid. In addition, due to the decrease in the water pressure of the liquid in the flow velocity deceleration channel, the static pressure of the negative pressure generation chamber 4 decreases. Therefore, due to the application of negative pressure to the liquid, the water pressure of the liquid further decreases;

[0028] That is, a negative pressure is generated around the flow velocity increasing channel, thereby further reducing the water pressure of the liquid, further enhancing the cavitation effect, and further increasing the amount of bubbles generated in the fluid. Here, the negative pressure refers to the air pressure lower than the atmospheric pressure. In addition, since the liquid flowing in the flow path 5 generates a force in the direction of extracting gas from the negative pressure generation chamber 4, the liquid in the flow path 5 flows smoothly in the flow path 5 without stagnating in the negative pressure generation chamber 422. That is, in the state where the liquid flows through the flow path 5, the negative pressure generation chamber 4 is in a sealed state;

[0029] Then, the liquid passing through the flow velocity increasing channel reaches the flow velocity deceleration channel, where the diameter of the flow velocity deceleration channel is larger than that of the flow velocity acceleration channel. At this time, the water pressure in the flow velocity deceleration channel is higher than that in the flow velocity acceleration channel. Therefore, the bubbles in the liquid are broken, generating microbubbles. The diameter of the microbubbles is smaller than the diameter of the bubbles generated in the flow velocity acceleration channel and has a diameter that cannot be recognized by the naked eye;

[0030] When a fluid flows through the flow velocity acceleration channel, since the water pressure of the liquid decreases in the flow velocity acceleration channel, gas is extracted from the negative pressure generation chamber 422, and by reducing the atmospheric pressure in the negative pressure generation chamber 4, the water pressure of the liquid flowing in the flow velocity acceleration channel is lower than the state without the communication hole 12. Therefore, the cavitation effect of the flow velocity acceleration channel can be enhanced, and the amount of bubbles generated in the liquid can be increased. Then, by making the fluid containing a large amount of bubbles flow through the flow velocity reduction part, microbubbles are generated.

[0031] In this embodiment, the first orifice plate 11 is provided with at least two mounting holes 111, and the second orifice plate 8 is provided with at least two arc-shaped holes 81. The two arc-shaped holes 81 are concentric with the second orifice plate 8, and the arc-shaped holes 81 and the mounting holes 111 are fixed to the lower cover 9 by bolts;

[0032] During use, the second orifice plate 8 is adjusted according to the angle that the second orifice plate 8 needs to be adjusted. After adjustment, the second orifice plate 8, the first orifice plate 11 and the lower cover 9 can be fixed by bolts, the arc-shaped holes 81 and the mounting holes 111, which is convenient for adjusting the water output.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A microbubble generating device, characterized in that: It includes a housing and a lower cover detachably and sealingly connected to the bottom of the housing. A connection port is communicated with the top of the housing. A water outlet is provided at the bottom of the lower cover. A microbubble generator is hermetically inserted into the housing. A filter, a first orifice plate, and a second orifice plate are sequentially arranged from top to bottom on the lower side of the microbubble generator. The second orifice plate can rotate to adjust the water output of the water outlet. The first orifice plate and the second orifice plate are both installed on the lower cover. The upper and lower side surfaces of the filter are respectively in contact and sealed with the microbubble generator and the first orifice plate.

2. The microbubble generating device according to claim 1, characterized in that: The microbubble generator is sequentially provided with a first conical channel, a flow path, and a second conical channel that are communicated from top to bottom. The first conical channel is communicated with the connection port and the diameter of the first conical channel gradually decreases from top to bottom. The diameter of the flow path is less than or equal to the minimum diameter of the first conical channel. The diameter of the second conical channel gradually increases from top to bottom. A ring groove is provided on the outer circumferential side surface of the microbubble generator. A negative pressure generation chamber is formed between the ring groove and the inner wall of the housing. The negative pressure generation chamber is provided with a communication hole communicated with the flow path.

3. The microbubble generating device according to claim 2, wherein: Both the maximum diameter and the minimum diameter of the first conical channel are less than the maximum diameter and the minimum diameter of the second conical channel.

4. The microbubble generating device according to claim 1, wherein: Both the first orifice plate and the second orifice plate are provided with water outlet holes located at the water outlet.

5. The microbubble generating device according to claim 1, characterized in that: The first orifice plate is provided with at least two mounting holes. The second orifice plate is provided with at least two arc-shaped holes. The two arc-shaped holes are concentric with the second orifice plate. The arc-shaped holes and the mounting holes are fixed to the lower cover by bolts.

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