An ultra-micro bubble generating device

Abstract

The application discloses an ultra-micro bubble generating device, which comprises a cylinder with openings at both upper and lower ends, an upper baffle is arranged at the upper end opening of the cylinder, a gas inlet hole is formed downward in the upper end of the upper baffle, a water inlet hole is formed inward in the upper end of the outer wall of the cylinder, first magnetic bearings are installed on the inner wall of the cylinder at positions close to the openings of the upper and lower ends, a rotating shaft is rotatably connected between the two first magnetic bearings, a driving motor is installed at the upper end of the rotating shaft, a fixed cylinder is arranged at a position close to the upper end of the inner wall of the cylinder, a first turbine is arranged at the bottom of the inner wall of the fixed cylinder, a first impeller is arranged below the fixed cylinder, a plurality of permanent magnets are arranged downward on the outer wall of the rotating shaft, a second turbine is arranged below the permanent magnets, a second impeller is arranged below the outer wall of the rotating shaft, and a plurality of micro-nano aerators are arranged at the lower end opening of the cylinder. The application can make the diameter of the bubbles generated by aeration smaller, improve the dissolved oxygen content and reduce energy loss.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerators, in particular to an ultra-micro bubble generating device. BACKGROUND

[0002] Aeration refers to the process of forcibly dispersing gas into liquid, which aims to obtain sufficient dissolved gas and strengthen the contact between organic matter, microorganisms and dissolved oxygen in the pool. For example, increasing the contact area of water and air by methods such as air charging or mechanical stirring is an intermediate process of wastewater aerobic biological treatment, which aims to obtain sufficient dissolved oxygen.

[0003] The oxygen transfer in micro-nano bubble water is to use the concentration gradient between air and oxygen in sewage to produce small bubbles, which can quickly dissolve in the water body. The aeration machine is an essential equipment to realize aeration. At present, there are many aerators, but basically they produce bubbles with a diameter of more than 50 microns. The larger the bubble, the smaller the specific surface area, and the lower the gas utilization rate, the lower the oxygen dissolution rate and the higher the energy consumption. SUMMARY

[0004] The purpose of the present application is to provide an ultra-micro bubble generating device, which can produce smaller diameter bubbles for aeration, improve the dissolved oxygen content, and reduce energy consumption.

[0005] The above technical purpose of the present application is realized by the following technical scheme:

[0006] An ultra-micro bubble generating device, comprising a cylinder with openings at both upper and lower ends, an upper baffle is arranged at the upper end opening of the cylinder and matched therewith, a plurality of air inlet holes are formed downward through the upper end of the upper baffle, a plurality of water inlet holes are formed inward at the upper end of the outer wall of the cylinder, a fixed frame is arranged at the position close to the opening of the inner wall of the cylinder at both upper and lower ends and communicated therewith, a first magnetic bearing matched therewith is installed in each fixed frame, a rotating shaft penetrating the upper baffle and rotatably connected therewith is rotatably connected between the two first magnetic bearings, a driving motor is installed at the end of the rotating shaft penetrating the upper baffle, a fixed cylinder with an upper end opening and sleeved with the rotating shaft is arranged at the position close to the upper end opening of the inner wall of the cylinder, the fixed cylinder is made of magnetic material, and a gap is left between the outer wall of the fixed cylinder and the inner wall of the cylinder and connected and fixed by a plurality of fixed blocks distributed at equal intervals.

[0007] The outer wall of the rotating shaft is provided with a first turbine upwardly at the bottom of the inner wall of the fixed cylinder, the outer wall of the rotating shaft is provided with a first impeller downwardly below the fixed cylinder, the outer wall of the rotating shaft is provided with a plurality of equally spaced permanent magnet blocks downwardly below the first impeller, the inner wall of the fixed cylinder is provided with a plurality of first permanent magnet pieces along the height direction thereof, and the inner wall of the cylinder is provided with a plurality of equally spaced second permanent magnet pieces at the positions of the permanent magnet blocks.

[0008] The outer wall of the rotating shaft is provided with a second turbine upwardly between the permanent magnet blocks and the corresponding first magnetic bearing, the outer wall of the rotating shaft is provided with a second impeller downwardly below the corresponding first magnetic bearing, the boost of the first impeller is greater than that of the second turbine, and the lower end of the cylinder is provided with a lower baffle plate in sealing connection therewith.

[0009] By adopting the above technical scheme, when in use, the cylinder is placed in water, the water body enters the cylinder through the water inlet hole, the driving motor is powered and allowed to work, the driving motor drives the rotating shaft to rotate, and the first turbine, the first impeller, the second turbine and the second impeller are driven to rotate at the same time, at this time, negative pressure is generated in the cylinder, air enters the cylinder from the air inlet hole of the upper baffle plate, after the water body enters the cylinder, it is first dispersed by the first turbine in the fixed cylinder and forms a spiral turbine in contact with the inner wall of the fixed cylinder, and the water body is preliminarily cut, activated and the diameter of the air bubbles is reduced, then the water body flows out of the opening end of the fixed cylinder and falls downward, and then the water body is dispersed by the first impeller and conveyed downward, the second turbine pushes the downwardly conveyed water body upward to form a convection between the water body and the first impeller, in this process, the high-speed rotating permanent magnet blocks cut and activate the convected water body again, and further reduce the diameter of the air bubbles, improve the dissolved oxygen content of the air bubbles, and then the water body and the air bubbles flow out of the micro-nano aerator head of the lower baffle plate under the pushing of the second impeller, to form micro-nano bubbles with smaller diameter to aerate and oxygenate the water body.

[0010] The further setting of the application is that the inner wall of the cylinder is provided with a water guide bucket in communication with the fixed cylinder above the fixed cylinder, and the lower end of the water guide bucket is close to the opening end of the fixed cylinder.

[0011] By adopting the above technical scheme, the water body entering the cylinder can be directly cut and activated in the fixed cylinder.

[0012] The further setting of the application is that the outer wall of the water guide bucket is provided with a plurality of equally spaced permanent magnet strips matched therewith.

[0013] The further setting of the application is that a plurality of water outlet holes are arranged in an array and are formed in the outer wall of the fixed cylinder inwardly.

[0014] By adopting the technical scheme, the water body can be accelerated to flow out of the fixed cylinder, and the contact area of the water body and the fixed cylinder is further expanded to accelerate the cutting and activation of the water body.

[0015] The first impeller blade has an inclination angle of 30-50 degrees, and the second turbine blade has an inclination angle of 20-30 degrees.

[0016] By adopting the technical scheme, the water body can form a convection between the first impeller and the second turbine, and the normal falling of the water body is not affected.

[0017] The lower baffle outer wall is provided with a fixing hole at the middle position, and a second magnetic bearing matched with the fixing hole is rotatably connected in the fixing hole.

[0018] By adopting the technical scheme, the bubbles sprayed from the micro-nano aeration head can be pushed away to the surrounding, and the diffusion range of the micro-nano bubbles is increased.

[0019] The turbulence assembly comprises a fixed shaft and a turbulence disc arranged at the lower end of the outer wall of the fixed shaft.

[0020] In summary, the present application has the following advantages:

[0021] Firstly, the present application can make the diameter of the bubbles generated by aeration smaller, improve the dissolved oxygen content, and reduce energy consumption.

[0022] Secondly, the first magnetic bearing of the present application can reduce the friction of the rotating shaft and improve the rotating speed, and reduce the energy consumption of the driving motor.

[0023] Thirdly, the present application can improve the dissolved oxygen content in the water body by cutting and activating the water body multiple times, and the diameter of the generated micro-nano bubbles is smaller and smaller. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0025] Figure 2 It is mainly used to show the position connection relationship of each component;

[0026] Figure 3 It is mainly used to show the first turbine, the first impeller, the second turbine and the second impeller;

[0027] Figure 4 It is mainly used to show the turbulence assembly.

[0028] In the figure: 1, cylinder; 11, fixed frame; 12, first magnetic bearing; 13, upper baffle; 14, air inlet hole; 15, rotating shaft; 16, fixed cylinder; 17, fixed block; 18, water outlet hole; 19, first turbine; 2, first permanent magnet piece; 21, water guide; 22, water inlet hole; 23, permanent magnet strip; 24, first impeller; 25, permanent magnet block; 26, second turbine; 27, second impeller; 28, second permanent magnet piece; 29, lower baffle; 3, micro-nano aerator head; 31, fixed hole; 32, second magnetic bearing; 33, turbulence assembly; 34, fixed shaft; 35, turbulence disc; 36, driving motor. DETAILED DESCRIPTION

[0029] The application will be further described below in conjunction with the drawings.

[0030] In the description of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0031] Embodiment, refer to Figures 1-4 A super micro bubble generating device, comprising a cylinder 1 with openings at both upper and lower ends, an upper baffle 13 is arranged at the upper end of the cylinder 1, four air inlet holes 14 are arranged downwardly through the upper end of the upper baffle 13, a plurality of water inlet holes 22 are arranged inwardly at the upper end of the outer wall of the cylinder 1, a fixed frame 11 is arranged at each of the upper and lower ends of the inner wall of the cylinder 1, a first magnetic bearing 12 is arranged in each fixed frame 11, a rotating shaft 15 is rotatably connected between the two first magnetic bearings 12 and penetrates through the upper baffle 13, and a driving motor 36 is arranged at the end of the rotating shaft 15 penetrating through the upper baffle 13.

[0032] The inner wall of the barrel 1 is provided with a water guide 21 in the shape of a cone and in communication with the water inlet hole 22. The outer wall of the water guide 21 is provided with a plurality of permanent magnetic strips 23 in equal intervals and in cooperation with the water guide 21. The inner wall of the barrel 1 is provided with a fixed barrel 16 with an open upper end and in sleeve connection with the rotating shaft 15 below the water guide 21. The fixed barrel 16 is made of magnetic material. The outer wall of the fixed barrel 16 is connected and fixed by four fixed blocks 17 in equal intervals in the circumferential direction. The open end of the fixed barrel 16 is close to the lower end opening of the water guide 21. A plurality of water outlet holes 18 in array distribution are formed in the outer wall of the fixed barrel 16. The inner wall of the fixed barrel 16 is provided with a plurality of first permanent magnetic sheets 2 in equal intervals in the circumferential direction and in opposite polarity along the height direction.

[0033] The outer wall of the rotating shaft 15 is provided with a first turbine 19 upwardly at the bottom of the inner wall of the fixed barrel 16. The outer wall of the rotating shaft 15 is provided with a first impeller 24 with an impeller blade inclination angle of 30°-50° below the fixed barrel 16. The outer wall of the rotating shaft 15 is provided with five permanent magnetic blocks 25 in equal intervals in the circumferential direction downwardly below the first impeller 24. The inner wall of the barrel 1 is provided with a plurality of second permanent magnetic sheets 28 in equal intervals in the circumferential direction and in opposite polarity at the position of the permanent magnetic blocks 25. The outer wall of the rotating shaft 15 is provided with a second turbine 26 with an impeller blade inclination angle of 20°-30° upwardly between the permanent magnetic blocks 25 and the corresponding first magnetic bearing 12 below, so that the pressure increase of the first impeller 24 is greater than that of the second turbine 26.

[0034] The outer wall of the rotating shaft 15 is provided with a second impeller 27 below the corresponding first magnetic bearing 12. The lower end opening of the barrel 1 is provided with a lower baffle 29 in sealed connection. The outer wall of the lower baffle 29 is provided with a plurality of micro-nano aerator heads 3 in equal intervals and in communication with the outer wall of the lower baffle 29. A fixing hole 31 is formed in the middle position of the outer wall of the lower baffle 29 downwardly. A second magnetic bearing 32 is installed in the fixing hole 31 in cooperation. A turbulence assembly 33 is rotatably connected in the second magnetic bearing 32 and connected with the lower end of the rotating shaft 15. The turbulence assembly 33 includes a fixed shaft 34 and a turbulence disc 35 provided on the outer wall of the fixed shaft 34.

[0035] Usage: when in use, first place the cylinder 1 in water, keep the air inlet hole 14 of the upper baffle 13 out of the water surface, then water enters the cylinder 1 through the water inlet hole 22, and then enters the fixed cylinder 16 fixed by the fixed block 17, power on the driving motor 36 and let it work, the driving motor 36 drives the rotating shaft 15 to rotate, while the first magnetic bearing 12 in the fixed frame 11 can reduce the friction between the rotating shaft 15, improve the rotating speed and reduce the energy loss, the rotating shaft 15 drives the first turbine 19, the first impeller 24, the second turbine 26 and the second impeller 27 to rotate at the same time, at this time, negative pressure is generated in the cylinder 1, air enters the cylinder 1 from the air inlet hole 14 of the upper baffle 13, after the water enters the cylinder 1, it will be first scattered by the first turbine 19 in the fixed cylinder 16 and form an upward spiral water flow in the fixed cylinder 16, the spiral water flow contacts the inner wall of the fixed cylinder 16 and collides with the first permanent magnet piece 2, and the water body is preliminarily cut, activated and the bubble diameter is reduced through the magnetism.

[0036] Then part of the upward spiral water flow flows out from the water outlet hole 18 and falls downward, most of the upward spiral water flow is sprayed out from the open end of the fixed cylinder 16 and collides with the outer wall of the water guide 21 and further contacts and scatters the permanent magnet strip 23, and then spreads to all directions and falls downward, the falling water body is then scattered again by the first impeller 24 and transported to the second turbine 26, the second turbine 26 pushes the downward transported water upward, so that the water body forms a convection with the first impeller 24, in this process, the high-speed rotating permanent magnet block 25 cuts the convective water again, and the water flow collides with the second permanent magnet piece 28 again and cooperates with the permanent magnet block 25 to cut and activate the water, further reducing the diameter of the bubble and increasing the dissolved oxygen content of the bubble, and because the inclination angle of the impeller blade of the first impeller 24 is greater than that of the second turbine 26.

[0037] Therefore, the first impeller 24 pressurizes the water much more than the second turbine 26, and the second impeller 27 pressurizes downward, and the water body cut and activated again continues to flow downward from the edge of the second turbine 26, and then the continuously flowing water body flows out from the micro-nano aerator head 3 of the lower baffle 29 under the stirring of the second impeller 27 to form micro-nano bubbles with smaller diameter to aerate and oxygenate the water, the micro-nano bubbles sprayed from the micro-nano aerator head 3 are expanded by the turbulence assembly 33 to expand the diffusion range, when the turbulence assembly 33 rotates, the second magnetic bearing 32 in the fixed hole 31 can reduce the friction between the fixed shaft 34, and the rotating speed of the turbulence disc 35 is improved through the fixed shaft 34, so that the micro-nano bubbles can diffuse farther.

[0038] The embodiments are only used to explain the present application, and are not used to limit the present application, and any modification without creative contribution made by the person skilled in the art according to the embodiments after reading the specification is protected by the patent law as long as it is within the scope of the claims of the present application.

Claims

1. An ultrafine bubble generating apparatus comprising a cylinder (1) having openings at both upper and lower ends, characterized by: The upper end opening of the cylinder body (1) is provided with an upper baffle (13) matched therewith, a plurality of air inlet holes (14) are opened downward through the upper end of the upper baffle (13), a plurality of water inlet holes (22) are opened inward at the upper end of the outer wall of the cylinder body (1), the inner wall of the cylinder body (1) is provided with a fixed frame (11) at the position close to the opening of the upper end, a first magnetic bearing (12) matched therewith is installed in each fixed frame (11), a rotating shaft (15) penetrating out of the upper baffle (13) and rotatingly connected with the upper baffle (13) is rotatingly connected between the two first magnetic bearings (12), a driving motor (36) is installed at one end of the rotating shaft (15) penetrating out of the upper baffle (13), a fixed cylinder (16) with an upper end opening and sleeved with the rotating shaft (15) is arranged at the position close to the upper end opening of the inner wall of the cylinder body (1), the fixed cylinder (16) is made of magnetic material, and a gap is left between the outer wall of the fixed cylinder (16) and the inner wall of the cylinder body (1) and connected and fixed by a plurality of fixed blocks (17) distributed at equal intervals. A first turbine (19) is arranged upward on the outer wall of the rotating shaft (15) at the bottom of the inner wall of the fixed cylinder (16), a first impeller (24) is arranged below the fixed cylinder (16) on the outer wall of the rotating shaft (15), a plurality of permanent magnetic blocks (25) distributed at equal intervals are arranged downward on the outer wall of the rotating shaft (15) below the first impeller (24), a plurality of first permanent magnetic sheets (2) are arranged along the height direction of the inner wall of the fixed cylinder (16), and a plurality of second permanent magnetic sheets (28) distributed at equal intervals are arranged on the inner wall of the cylinder body (1) at the positions of the permanent magnetic blocks (25). A second turbine (26) is arranged upward between the permanent magnetic blocks (25) and the corresponding first magnetic bearing (12) below the outer wall of the rotating shaft (15), a second impeller (27) is arranged below the corresponding first magnetic bearing (12) below the outer wall of the rotating shaft (15), the boost of the first impeller (24) is greater than that of the second turbine (26), and a lower baffle (29) in sealing connection with the lower end opening of the cylinder body (1) is arranged, a plurality of micro-nano aeration heads (3) distributed at equal intervals and in communication with the lower baffle (29) are arranged on the edge of the bottom of the outer wall of the lower baffle (29).

2. The ultra microbubble generating device according to claim 1, wherein: A water guide (21) in communication with the fixed cylinder (16) and in a tapered shape is arranged above the inner wall of the cylinder body (1).

3. The ultra microbubble generating device according to claim 2, wherein: A plurality of permanent magnetic strips (23) distributed at equal intervals and matched with the water guide (21) are arranged on the outer wall of the water guide (21).

4. The ultra microbubble generating device according to claim 1, wherein: A plurality of water outlet holes (18) distributed in an array are opened inward through the outer wall of the fixed cylinder (16).

5. The ultra microbubble generating device according to claim 1, wherein: The inclination angle of the impeller blade of the first impeller (24) is 30°-50°, and the inclination angle of the impeller blade of the second turbine (26) is 20°-30°.

6. The ultra microbubble generating device according to claim 1, wherein: The lower baffle (29) outer wall middle position is downwardly provided with a fixed hole (31), a second magnetic bearing (32) matched with the fixed hole (31) is rotatably connected in the fixed hole (31), and the second magnetic bearing (32) is provided with a spoiler assembly (33) connected with the lower end of the rotating shaft (15).

7. The ultra microbubble generating device according to claim 6, wherein: The spoiler assembly (33) comprises a fixed shaft (34) and a spoiler disc (35) arranged at the lower end of the outer wall of the fixed shaft (34).

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