CN117699993A - An ultra-micro bubble generating device - Google Patents

Abstract

The invention discloses an ultra-micro bubble generating device, which comprises a cylinder body with openings at the upper end and the lower end, wherein an upper baffle is arranged at the opening at the upper end of the cylinder body, an air inlet is formed at the upper end of the upper baffle downwards, an inlet hole is formed at the upper end of the outer wall of the cylinder body inwards, first magnetic bearings are arranged at the positions, close to the openings, of the upper end and the lower end of the inner wall of the cylinder body respectively, a rotating shaft is connected between the two first magnetic bearings in a matched rotation mode, a driving motor is arranged at the upper end of the rotating shaft, a fixed cylinder is arranged at the position, close to the upper end, of the inner wall of the cylinder body, 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 below the outer wall of the rotating shaft, a second turbine is arranged below the outer wall of the rotating shaft, and a plurality of micro-nano aeration heads are arranged at the opening at the lower end of the cylinder body. The invention can make the diameter of the bubbles generated by aeration smaller, improve the content of dissolved oxygen and reduce the energy loss.

Description

An ultra-micro bubble generating device

Technical field

The present invention relates to the technical field of aerators, and in particular to an ultrafine bubble generating device.

Background technique

Aeration refers to the process of forcibly dispersing gas into a liquid. Its purpose is to obtain enough dissolved gas and enhance the contact between organic matter in the pool, microorganisms and dissolved oxygen. For example, increasing the contact area between water and air by inflating water or mechanical agitation is an intermediate process for aerobic biological treatment of wastewater, and its purpose is to obtain sufficient dissolved oxygen.

The transfer of oxygen in micro-nano bubbles in water uses the concentration of oxygen in air and sewage. The device can produce a gradient between 50 nanometers and tens of nanometers (nm) in diameter, so that oxygen moves from high-density air to low-density sewage. The tiny bubbles can be quickly dissolved in the water body, and the aerator is a necessary equipment to achieve aeration. There are many aerators at present, but they basically produce bubbles above 50 microns. The bubbles are relatively large, and the larger the bubbles Large, the smaller the specific surface area, the lower the gas utilization rate, low dissolved oxygen rate, and high energy consumption.

Contents of the invention

The purpose of the present invention is to provide an ultrafine bubble generating device that can make the bubbles generated by aeration smaller in diameter, increase the dissolved oxygen content and reduce energy loss at the same time.

The above technical objectives of the present invention are achieved through the following technical solutions:

An ultra-micro bubble generating device includes a cylinder with openings at both upper and lower ends. The upper opening of the cylinder is provided with an upper baffle that matches the upper baffle. A plurality of inlets are opened downward through the upper end of the upper baffle. Air holes, the upper end of the outer wall of the cylinder is provided with a number of water inlet holes inward, and the upper and lower ends of the inner wall of the cylinder are provided with fixing brackets connected thereto near its opening, and each fixing bracket is installed with The two first magnetic bearings are matched with a first magnetic bearing. There is a rotating shaft that goes out of the upper baffle and is rotatably connected between the two first magnetic bearings. The rotating shaft goes through one end of the upper baffle. A driving motor is installed, and a fixed cylinder with an upper end opening and sleeved with the rotating shaft is provided on the inner wall of the cylinder near its upper end opening. The fixed cylinder is made of magnetic material, and the outer wall of the fixed cylinder is in contact with the rotating shaft. There are gaps between the inner walls of the cylinder and they are connected and fixed by multiple fixed blocks distributed at equal intervals;

The outer wall of the rotating shaft is provided with a first turbine upward from the bottom of the inner wall of the fixed cylinder. The outer wall of the rotating shaft is provided with a first impeller below the fixed cylinder. The outer wall of the rotating shaft is located above the first impeller. A plurality of permanent magnet blocks distributed at equal intervals are provided downwardly. A second turbine is provided upwardly between the permanent magnet block and the corresponding first magnetic bearing below the outer wall of the rotating shaft. The outer wall of the rotating shaft is located below the outer wall. A second impeller is provided below corresponding to the first magnetic bearing. The lower end opening of the barrel is provided with a lower baffle that is sealingly connected to it. A number of equally spaced impellers are installed on the edge of the bottom of the outer wall of the lower baffle and are all connected to the first magnetic bearing. The connected micro-nano aeration head.

By adopting the above technical solution, when using, first place the cylinder in the water, keep the air inlet leaking out of the water, and the water enters the cylinder through the water inlet. The drive motor is energized and allowed to work, and the drive motor drives the rotating shaft to rotate. At the same time, the first turbine, the first impeller, the second turbine and the second impeller are driven to rotate. At this time, negative pressure is generated in the cylinder, and air enters the cylinder from the air inlet of the upper baffle. After the water enters the cylinder, it will first It is dispersed by the first turbine in the fixed cylinder and forms a spiral turbine in the fixed cylinder. It contacts the inner wall of the fixed cylinder and initially cuts, activates and reduces the bubble diameter of the water body through its magnetism. Then the water body flows out from the open end of the fixed cylinder and is It falls downward, and then the first impeller breaks up the water body and transports it downward. The second turbine pushes the downwardly transported water body upward to form convection between the water body and the first impeller. In this process, the high-speed rotating permanent magnet block The convective water body is cut and activated again to further reduce the diameter of the bubbles and increase the dissolved oxygen content of the bubbles. Then the water body and bubbles flow out from the micro-nano aeration head of the lower baffle under the push of the second impeller to form a smaller diameter. Small micro-nano bubbles aerate and oxygenate the water.

A further configuration of the present invention is that the inner wall of the cylinder is provided with a conical water guide bucket connected to the fixed cylinder, and the lower end of the water guide bucket is close to the open end of the fixed cylinder.

By adopting the above technical solution, the water entering the cylinder can directly enter the fixed cylinder for preliminary cutting and activation.

A further configuration of the present invention is that the outer wall of the pouring bucket is provided with a number of permanent magnet strips distributed at equal intervals and matching with them.

A further configuration of the present invention is that a plurality of water outlets distributed in an array are opened inwardly through the outer wall of the fixed cylinder.

By adopting the above technical solution, not only can the rate of water flowing out of the fixed cylinder be accelerated, but the contact surface between the water body and the fixed cylinder can also be further expanded to accelerate the cutting and activation of the water body.

A further configuration of the present invention is that the inner wall of the fixed cylinder is provided with a plurality of first permanent magnet pieces along its height direction, and the inner wall of the cylinder is provided with a plurality of equally spaced second permanent magnets at the positions of the permanent magnet blocks. piece.

By adopting the above technical solution, the magnetic field changes in the cylinder are strengthened and the water body is further activated.

The present invention further provides that the inclination angle of the first impeller blade is 30°-50°, and the inclination angle of the second turbine impeller blade is 20°-30°.

By adopting the above technical solution, convection can be formed in the water body between the first impeller and the second turbine without affecting the normal falling of the water body.

A further configuration of the present invention is that a fixing hole is opened downward in the middle position of the outer wall of the lower baffle, and a second magnetic bearing is rotatably connected in the fixing hole, and the second magnetic bearing is installed on the The spoiler assembly connected to the lower end of the rotating shaft.

By adopting the above technical solution, the bubbles ejected from the micro-nano aeration head can be pushed around to expand the diffusion range of the micro-nano bubbles.

A further configuration of the present invention is that the spoiler assembly includes a fixed shaft and a spoiler plate arranged at the lower end of the outer wall of the fixed shaft.

To sum up, the present invention has the following beneficial effects:

First, the present invention can make the diameter of bubbles produced by aeration smaller, increase the dissolved oxygen content and reduce energy loss at the same time;

Secondly, the first magnetic bearing of the present invention can not only reduce the friction when the rotating shaft rotates and increase its speed, but also can drive the energy loss of the motor;

Third, by cutting and activating the water body multiple times, the present invention can not only increase the dissolved oxygen content in the water body, but also make the diameter of the generated micro-nano bubbles smaller each time.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is mainly used to show the positional connection relationship of each component;

Figure 3 is mainly used to show the first turbine, the first impeller, the second turbine and the second impeller;

Figure 4 is mainly used to show the spoiler assembly.

In the picture: 1. Cylinder; 11. Fixed frame; 12. First magnetic bearing; 13. Upper baffle; 14. Air inlet; 15. Rotating shaft; 16. Fixed cylinder; 17. Fixed block; 18. Water outlet ; 19. First turbine; 2. First permanent magnet piece; 21. Pour bucket; 22. Water inlet; 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 aeration head; 31. Fixed hole; 32. Second magnetic bearing; 33. Spoiler assembly; 34. Fixed Shaft; 35, spoiler; 36, drive motor.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. indicate an orientation or position. The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore It should not be construed as a limitation of the present invention.

Embodiment, with reference to Figures 1-4, an ultrafine bubble generating device includes a cylinder 1 with openings at both upper and lower ends. The upper opening of the cylinder 1 is provided with an upper baffle 13 that matches it and penetrates the upper baffle. The upper end of 13 is provided with four air inlet holes 14 downward, and the upper end of the outer wall of the cylinder 1 is provided with a number of water inlet holes 22 inward. The upper and lower ends of the inner wall of the cylinder 1 are provided with a connected outlet near its opening. Fixed frame 11, each fixed frame 11 is equipped with a first magnetic bearing 12 that cooperates with it, and a pair of first magnetic bearings 12 is connected and rotated with each other by passing through the upper baffle 13 and rotating with it. The rotating shaft 15 has a drive motor 36 installed at one end of the rotating shaft 15 passing through the upper baffle 13 .

A cone-shaped water guide bucket is provided above the inner wall of the cylinder 1 and below the water inlet hole 22. The outer wall of the water pouring bucket 21 is provided with a number of permanent magnetic strips 23 distributed at equal intervals and matching with the water inlet hole 22. , the inner wall of the cylinder 1 is provided with a fixed cylinder 16 with an upper end open and sleeved with the rotating shaft 15 below the pouring bucket 21. The fixed cylinder 16 is made of magnetic material, and there is a gap between the outer wall of the fixed cylinder 16 and the inner wall of the cylinder 1. The gap is connected and fixed by four fixed blocks 17 distributed equally around the circumference. The open end of the fixed cylinder 16 is close to the lower end opening of the pouring bucket 21. A number of water outlets 18 distributed in an array are opened inward through the outer wall of the fixed cylinder 16. , the inner wall of the fixed cylinder 16 is provided with a plurality of first permanent magnet pieces 2 distributed at equal intervals around the circumference and with opposite polarity.

The outer wall of the rotating shaft 15 is provided with a first turbine 19 upward from the bottom of the inner wall of the fixed cylinder 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 cylinder 16. The rotating shaft The outer wall of the cylinder 15 is provided with five circumferentially equally spaced permanent magnet blocks 25 below the first impeller 24. The inner wall of the cylinder 1 is provided with a number of circumferentially equally spaced permanent magnet blocks 25 with opposite polarity. The second permanent magnet piece 28, a second turbine 26 with an impeller blade inclination angle of 20°-30° is provided upward between the permanent magnet block 25 and the corresponding first magnetic bearing 12 below the outer wall of the rotating shaft 15, so that the first The pressure increase of the impeller 24 is greater than the pressure increase of the second turbine 26 .

A second impeller 27 is provided below the outer wall of the rotating shaft 15 and corresponding to the first magnetic bearing 12. The lower end opening of the cylinder 1 is provided with a lower baffle 29 that is sealingly connected to it. The lower baffle 29 is installed on the edge of the bottom of the outer wall. There are a number of micro-nano aeration heads 3 distributed at equal intervals and connected with them. A fixing hole 31 is opened downward in the middle of the outer wall of the lower baffle 29, and a matching second magnetic device is installed in the fixing hole 31. The bearing 32 and the second magnetic bearing 32 are rotatably connected with a spoiler assembly 33 connected to the lower end of the rotating shaft 15 . The spoiler assembly 33 includes a fixed shaft 34 and a spoiler plate 35 arranged at the lower end of the outer wall of the fixed shaft 34 .

How to use: When using, first place the cylinder 1 in the water, keep the air inlet hole 14 of the upper baffle 13 leaking out of the water, the water enters the cylinder 1 through the water inlet hole 22, and then enters the fixed block 17 through the pouring bucket 21 In the fixed fixed cylinder 16, the drive motor 36 is energized and allowed to work. The drive motor 36 drives the rotating shaft 15 to rotate. When the rotating shaft 15 rotates, the first magnetic bearing 12 in the fixed frame 11 can be lowered between the rotating shaft 15 and the rotating shaft 15. The friction increases its rotational speed while reducing energy loss. When the rotating shaft 15 rotates, it drives the first turbine 19, the first impeller 24, the second turbine 26 and the second impeller 27 to rotate. At this time, the cylinder 1 generates Negative pressure, 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 first be dispersed by the first turbine 19 in the fixed cylinder 16 and form a rising wave 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 uses its magnetism to initially cut, activate and reduce the bubble diameter of the water body.

Then a part of the rising spiral water flow flows out from the water outlet hole 18 and falls downward. Most of the rising spiral water flow spurts out from the open end of the fixed cylinder 16 and hits the outer wall of the pouring bucket 21 and further contacts the permanent magnet strip 23 and is scattered. Spreading around and falling downward, the falling water is then dispersed again by the first impeller 24 and transported to the second turbine 26. The second turbine 26 pushes the downwardly transported water upward, allowing the water to interact with the first impeller 24. Convection is formed between them. During this process, the high-speed rotating permanent magnet block 25 cuts the convective water body again, and allows the water flow to hit the second permanent magnet piece 28 again and cooperates with the permanent magnet block 25 to cut and activate the water body, further reducing bubbles. The diameter of the impeller increases the dissolved oxygen content of the bubbles, and the inclination angle of the impeller blades of the first impeller 24 is greater than the inclination angle of the impeller blades of the second turbine 26 .

Therefore, the pressurization of the water body by the first impeller 24 is much greater than the pressurization of the second turbine 26. Coupled with the downward pressurization of the second impeller 27, the water body that has been cut and activated again will continue to move from the edge of the second turbine 26. The water body flowing downward, and then continuing to flow downward, flows out from the micro-nano aeration head 3 of the lower baffle 29 under the push and stirring of the second impeller 27 to form micro-nano bubbles with smaller diameters to aerate and oxygenate the water body. The micro-nano bubbles ejected from the aeration head 3 will expand their diffusion range through the spoiler assembly 33. When the spoiler assembly 33 rotates, the second magnetic bearing 32 in the fixed hole 31 can reduce the friction with the fixed shaft 34. And the rotation speed of the spoiler plate 35 is increased through the fixed shaft 34 to allow the micro-nano bubbles to spread farther.

This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as needed after reading this specification. However, as long as the rights of the present invention are All requirements are protected by patent law.

Claims (8)

1. An ultra-micro bubble generating device, comprising a cylinder (1) with openings at both upper and lower ends, characterized in that: the upper opening of the cylinder (1) is provided with an upper baffle (13) that matches it, A plurality of air inlet holes (14) are opened downward through the upper end of the upper baffle (13), and a number of water inlet holes (22) are opened inward at the upper end of the outer wall of the barrel (1). (1) The upper and lower ends of the inner wall are provided with fixed brackets (11) connected with the opening, and each fixed bracket (11) is equipped with a matching first magnetic bearing (12). Two The first magnetic bearings (12) are cooperatively and rotationally connected with a rotating shaft (15) that passes through the upper baffle (13) and is rotatably connected with it. The rotating shaft (15) passes through the upper baffle (13) and is rotatably connected with it. A driving motor (36) is installed at one end of 13), and a fixed cylinder (16) with an upper end open and sleeved with the rotating shaft (15) is provided on the inner wall of the cylinder (1) close to its upper end opening. The cylinder (16) is made of magnetic material. There is a gap between the outer wall of the fixed cylinder (16) and the inner wall of the cylinder (1) and is connected and fixed by a plurality of fixed blocks (17) distributed at equal intervals; The outer wall of the rotating shaft (15) is provided with a first turbine (19) upward from the bottom of the inner wall of the fixed cylinder (16), and the outer wall of the rotating shaft (15) is provided with a third turbine (19) below the fixed cylinder (16). An impeller (24). A plurality of equally spaced permanent magnet blocks (25) are provided on the outer wall of the rotating shaft (15) below the first impeller (24). The outer wall of the rotating shaft (15) A second turbine (26) is provided upward between the permanent magnet block (25) and the corresponding first magnetic bearing (12), and the outer wall of the rotating shaft (15) is located below the corresponding first magnetic bearing (12). A second impeller (27) is provided below, and the lower end opening of the barrel (1) is provided with a lower baffle (29) sealingly connected with it. The edge of the bottom of the outer wall of the lower baffle (29) is equipped with a number of The micro-nano aeration heads (3) are equally spaced and connected to each other. 2. An ultrafine bubble generating device according to claim 1, characterized in that: the inner wall of the cylinder (1) is provided with a conical guide connected to the fixed cylinder (16). Water bucket, the lower end of the water guide bucket is close to the open end of the fixed tube (16). 3. An ultra-micro bubble generating device according to claim 2, characterized in that: the outer wall of the pouring bucket (21) is provided with a number of permanent magnetic strips (23) distributed at equal intervals and matched with them. . 4. An ultrafine bubble generating device according to claim 1, characterized in that a plurality of water outlets (18) distributed in an array are opened inwardly through the outer wall of the fixed cylinder (16). 5. An ultra-micro bubble generating device according to claim 1, characterized in that: the inner wall of the fixed cylinder (16) is provided with a plurality of first permanent magnet pieces (2) along its height direction, and the cylinder (16) 1) The inner wall is provided with a number of second permanent magnet pieces (28) distributed at equal intervals at the position of the permanent magnet block (25). 6. An ultrafine bubble generating device according to claim 1, characterized in that: the inclination angle of the impeller blades of the first impeller (24) is 30°-50°, and the impeller of the second turbine (26) The tilt angle of the piece is 20°-30°. 7. An ultra-micro bubble generating device according to claim 1, characterized in that: a fixing hole (31) is opened downward in the middle position of the outer wall of the lower baffle (29), and the fixing hole (31) A second magnetic bearing (32) is rotatably connected to the inside, and the second magnetic bearing (32) is installed with a spoiler assembly (33) connected to the lower end of the rotating shaft (15). 8. An ultra-micro bubble generating device according to claim 7, characterized in that: the flow spoiler assembly (33) includes a fixed shaft (34), and a flow spoiler arranged at the lower end of the outer wall of the fixed shaft (34). Plate (35).