CN211328956U

CN211328956U - Microbubble generating device

Info

Publication number: CN211328956U
Application number: CN201921545131.2U
Authority: CN
Inventors: 刘启月; 周伟; 曾波
Original assignee: Shenzhen Hongjing Environmental Protection Technology Co ltd
Current assignee: Shenzhen Hongjing Environmental Protection Technology Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-08-25
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a microbubble generating device, include: body (1), entry section (2), export section (3), intake pipe (4), its characterized in that: micropore pipe (7) have been placed to the inner chamber of body (1), are equipped with micropore section (71) in micropore pipe (7), and it is gapped between body (1) inner wall and micropore pipe (7), the ratio of the interior bore of entry section and micropore pipe internal diameter is between 0.25-0.5, because entry section D1 and mixing section D2's size is different, and the inflow can produce the efflux at the mixing section after entry section D1 hole gets into, produces the torrent in mixing section micropore pipe wall department, and the liquid phase speed on micropore pipe surface can make the bubble break away from rapidly and in time take away from, and the bubble size reduces.

Description

Microbubble generating device

Technical Field

The utility model relates to a novel microbubble generator.

Background

The microbubbles are generally bubbles with the diameter of less than 100 microns, and have the characteristics of tiny size, large specific surface area, strong adhesion capability, slow rising speed and the like, so the microbubbles are applied to the treatment of the oily sewage.

With the development of porous material production technology, the generation of micro-bubbles through micro-pores is one of effective ways for generating bubbles, such as a micro-bubble generating device for sewage treatment related to the prior art CN208471653U (hereinafter referred to as reference 1), which is formed by sequentially connecting and combining an airflow intake swirling accelerating device, a micro-pore diffusion plate, a spiral body and a nozzle body. The airflow air inlet rotational flow accelerating device comprises an air inlet pipe, an airflow rotation accelerating pipe and a circular truncated cone, wherein a cavity formed between the circular truncated cone and the airflow rotation accelerating pipe is an airflow rotation inner cavity; the micropore diffusion plate is cylindrical, and a plurality of micropores with the diameter less than 0.5mm are uniformly distributed on the cross section of the micropore diffusion plate along the axial direction by laser processing; the air outlet of the nozzle body is a diffusion cone. Although the above-mentioned comparative document 1 can generate fine bubbles, the diameters of the generated bubbles are still large because the diameters of the micropores are still large.

Disclosure of Invention

The utility model provides a produce littleer bubble to the micropore's of convenient clean jam novel microbubble generating device.

In order to achieve the above purpose, the utility model comprises: the inlet section comprises a pipe body, an inlet section, an outlet section and an air inlet pipe, wherein a microporous pipe is placed in an inner cavity of the pipe body, a microporous section is arranged in the microporous pipe, a gap is reserved between the inner wall of the pipe body and the microporous pipe, the ratio of the inner diameter of the inlet section to the inner diameter of the microporous pipe is 0.25-0.5, and the preferred ratio is 0.3, 0.35, 0.4 or 0.45.

Due to the fact that the sizes of the inlet section D1 and the mixing section D2 are different, inflow water can generate jet flow in the mixing section after entering through holes of the inlet section D1, turbulent flow is generated on the wall of a microporous pipe of the mixing section, bubbles can be rapidly separated and taken away in time due to the liquid phase speed on the surface of the microporous pipe, and the sizes of the bubbles are reduced.

The utility model discloses a preferred novel microbubble generating device, include: the inlet section and the outlet section are designed into conical shapes, the diameter of the conical body of the inlet section is reduced from outside to inside, the diameter of the conical body of the outlet section is increased from inside to outside, the conical inlet angle of the inlet section is 20-50 degrees, preferably 25 degrees, 30 degrees, 35 degrees, 40 degrees and 45 degrees, the liquid flow rate on the wall surface of the microporous pipe can be ensured to be large, the conical outlet angle of the outlet section is 10-35 degrees, preferably 15 degrees, 20 degrees, 25 degrees and 30 degrees, and the reasonable pressure drop of the microporous pipe is ensured.

As a further preferred novel microbubble generator, the ratio of the length of the microporous section to the length of the microporous tube is 0.2-0.5, preferably 0.25, 0.3, 0.35, 0.4 and 0.45, ensuring different combinations of pressure drop and gas-water ratio

As a further preferable novel micro-bubble generating device, the diameter of the micropores of the micropore section is not more than 1 micron, and the micropore section adopts a metal powder sintering pipe. It is further ensured that the bubbles become small.

As a further preferable novel micro-bubble generating device, a cleaning agent inlet pipe is arranged on the upper side of the pipe body, and a cleaning agent discharge pipe is arranged on the lower side of the pipe body, so that the micro-bubble generating device can be cleaned conveniently when micro-pores are blocked.

As a further preferable novel micro-bubble generating device, the bubble cutting device is installed at the outlet section, so that in actual use, bubbles are generated insufficiently and are cut through the device, and the particle size and the number are basically guaranteed.

Drawings

FIG. 1 is a schematic view of the structural assembly of the present invention;

fig. 2 is a test result of the relationship between the average size of the bubbles and the length ratio and the air-water ratio of the diameter D1 of the inner opening of the inlet section and the diameter D2 of the inner cavity of the microporous tube.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments: the utility model provides a novel microbubble generating device, includes body 1, entrance 2, export section 3, intake pipe 4, micropore pipe 7 has been placed to the inner chamber of body 1, micropore section 71, and micropore pipe 7 passes through hoop or O type circle (not shown in the figure) fixed connection to body 1 in, makes gappedly between 1 inner wall of body and the micropore pipe 7.

In order to ensure that the size of bubbles is reduced, inflow water can generate jet flow in the inner cavity of the microporous tube 7 after entering the inlet section 2, turbulence is generated at the inner tube wall of the microporous tube 7, micro bubbles on the inner surface of the microporous tube quickly break away and are carried by liquid, the ratio of the diameter D1 of the inner opening of the inlet section to the diameter D2 of the inner cavity of the microporous tube, the ratio of air to water and the like can be adjusted according to specific conditions, and the effect is better when the ratio of the diameter D1 of the inner opening of the inlet section to the diameter D2 of the inner cavity of the microporous tube is 0.25-0.35, and fig. 2 is a test result of an inventor.

The inlet section 2 and the outlet section 3 are designed into cone-shaped structures, the diameter of a cone of a water inlet from outside to inside is reduced from large, the diameter of a cone of a water outlet of the outlet section 3 from inside to outside is increased from small to large, the angle of a cone angle of the water inlet is determined to be 35 degrees by using a fluid mechanics calculation method, so that the maximum speed of the wall surface is ensured, and when the angle of the cone angle of the water outlet is set to be 20 degrees, the reasonable pressure drop of the microporous pipe is ensured.

The ratio of the length of the micropore section 71 to the length of the micropore pipe 7 is 0.35, the effect is good when the diameter of each micropore is not more than 1 micron, and the micropore section can be made of metal powder through sintering.

The air bubble cutting device is arranged at the outlet section of the micro-bubble generating device, so that the air bubble generating device is ensured to be not ideal enough in actual use because of the change of flow pressure, and the cutting is carried out through the air bubble generating device, so that the particle size and the quantity are basically ensured

When the cleaning agent cleaning device works, the valve connected with the cleaning agent inlet and outlet pipe is in a closed state, and gas enters from the gas inlet pipe 4, passes through the gap and enters into water through the micropore section 71.

Meanwhile, in order to prolong the service life of the generating device and reduce the operation cost of enterprises, the cleaning function of the device is increased. The upper side of body 1 is installed cleaner admission pipe 5, the downside of body 1 is installed the cleaner discharge pipe 6 for when the scale deposit situation appears in generating device, for cleaning work, at first close the valve around entrance and the export section during washing, the valve that cleaner discharge pipe 6 is connected is opened, the inside liquid of discharge. The valve to which the cleaning agent discharge pipe 6 is connected is then closed. And (3) opening a valve connected with the cleaning agent inlet pipe 5, filling the cleaning agent into the generating device, and determining the time according to the scaling condition, wherein the time is generally not less than 5 minutes. Then the cleaning agent is discharged from a cleaning agent outlet, and the cleaning agent is generally soaked and cleaned by dilute hydrochloric acid and then neutralized by aqueous alkali.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. A microbubble generation apparatus comprising: body (1), entry section (2), export section (3), intake pipe (4), its characterized in that: the inner cavity of the pipe body (1) is provided with a microporous pipe (7), a microporous section (71) is arranged in the microporous pipe (7), a gap is reserved between the inner wall of the pipe body (1) and the microporous pipe (7), and the ratio of the inner diameter D1 of the inlet section to the inner diameter D2 of the microporous pipe is 0.25-0.5.

2. A microbubble generation apparatus according to claim 1, wherein: the inlet section (2) is in a cone shape, and the diameter of the cone from outside to inside is reduced from large to small.

3. A microbubble generation apparatus according to claim 2, wherein: the cone inlet angle of the inlet section (2) is 20-50 degrees.

4. A microbubble generation apparatus according to claim 1, wherein: the outlet section (3) is in a cone shape, and the diameter of the cone from inside to outside is increased from small to large.

5. A microbubble generation apparatus according to claim 4, wherein: the outlet section (3) is a cone with an outlet angle of 10-35 degrees.

6. A microbubble generation apparatus according to claim 1, wherein: the ratio of the length of the microporous section (71) to the length of the microporous tube (7) is 0.2-0.5.

7. A microbubble generation apparatus according to claim 1, wherein: the diameter of the micropores of the micropore section (71) is not more than 1 micron.

8. A microbubble generation apparatus according to claim 1, wherein: the micropore section (71) adopts a metal powder sintered tube.

9. A microbubble generator according to any one of claims 1 to 8, wherein: the cleaning agent inlet pipe (5) is installed on the upper side of the pipe body (1), and the cleaning agent discharge pipe (6) is installed on the lower side of the pipe body.

10. A microbubble generator according to any one of claims 1 to 8, wherein: and the outlet section is provided with a bubble cutting device.