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CN-122006536-A - Bubble release assembly and aeration device

CN122006536ACN 122006536 ACN122006536 ACN 122006536ACN-122006536-A

Abstract

The invention relates to the field of gas-liquid mixing, and provides a bubble release assembly and an aeration device. The bubble release assembly comprises an inlet section, a shrinkage tube connected to the inlet section, a cyclone disk connected to the shrinkage tube, a reflection hole opposite to the shrinkage tube and a diversion channel for guiding fluid reflected by the reflection hole into the cyclone cavity, and a diffusion tube comprising an inflow port and an expansion port, wherein the inflow port is in fluid communication with the cyclone cavity, and the inner diameter of the expansion port is larger than that of the inflow port. The bubble release assembly realizes the graded conversion of fluid kinetic energy and pressure energy through the three-stage depressurization energy dissipation structure of the shrink tube, the cyclone disk and the diffusion tube and the cyclone reinforced turbulence mechanism, solves the problem that the bubble is merged due to the too concentrated energy release of the traditional releaser, and remarkably improves the stability of the release of dissolved air water energy and the bubble generation efficiency.

Inventors

  • Zhai Yonghao
  • YANG GUANGHUI
  • ZENG HUAN
  • Xi jiangshan

Assignees

  • 北京九界气融科技有限公司

Dates

Publication Date
20260512
Application Date
20260403

Claims (10)

  1. 1. A bubble release assembly comprising: An inlet section; a shrink tube connected to the inlet section; The swirl disk is connected with the shrinkage tube, and is provided with a reflecting hole opposite to the shrinkage tube and a diversion channel for guiding the fluid reflected by the reflecting hole into the swirl cavity; A diffuser comprising an inflow port in fluid communication with the cyclone chamber and an expansion port having an inner diameter greater than an inner diameter of the inflow port.
  2. 2. The bubble release assembly according to claim 1, wherein the reflection holes are tapered blind holes recessed toward the swirling chamber, and the flow guide channels are provided in the circumferential direction of the tapered blind holes for introducing the fluid reflected by the reflection holes into the swirling chamber in a tangential or spiral manner.
  3. 3. The bubble release assembly according to claim 2, wherein the ratio of the diameter of the reflective orifice to the inner diameter of the convergent tube is in the range of 1.1 to 1.3; the ratio of the depth of the conical blind hole to the diameter of the reflecting hole is in the range of 0.6 to 1.2.
  4. 4. The bubble release assembly of claim 2, wherein the swirl disk comprises a plurality of blades, the tapered blind holes are connected to the blade roots of the plurality of blades, the blades have an outer convex side adjacent one of the blades and an inner concave side adjacent the other blade, the ratio of the radius of curvature of the outer convex side to the radius of the tapered blind holes ranges from 2 to 4, and the ratio of the radius of curvature of the inner concave side to the radius of the tapered blind holes ranges from 3 to 4.
  5. 5. The bubble release assembly according to claim 4, wherein a first gap is formed between the outer convex side of one of the fan blades and the inner concave side of the other fan blade, and the ratio of the width of the first gap to the radius of the tapered blind hole ranges from 0.6 to 0.8; and a connecting part is formed between the blade root and the maximum diameter position of the conical blind hole, and the value range of the ratio of the width of the connecting part to the radius of the conical blind hole is 0.2-0.3.
  6. 6. The bubble release assembly according to any one of claims 1 to 5, wherein the ratio of the inner diameter of the convergent tube to the inner diameter of the inlet section is in the range 1/5 to 1/3; the ratio of the axial length of the shrink tube to the inner diameter of the shrink tube ranges from 1.5 to 2.
  7. 7. The bubble release assembly according to any one of claims 1 to 5, wherein the ratio of the diameter of the swirl chamber to the diameter of the constricting tube is in the range of 3 to 4.
  8. 8. The bubble release assembly according to any one of claims 1 to 5, wherein the ratio of the diameter of the inflow port to the diameter of the swirl chamber is in the range of 0.6 to 0.8.
  9. 9. The bubble release assembly according to any one of claims 1 to 5, wherein a diffusion opening angle of the diffusion tube ranges from 8 ° to 15 ° from the inflow opening toward the expansion opening.
  10. 10. An aeration device, comprising: A water pump; An air compressor; a dissolved air tank connected to the outlet of the water pump and the outlet of the air compressor for mixing water and air to form high pressure dissolved air water; The bubble release assembly according to any one of claims 1 to 9, the inlet pipe inlet section of the bubble release assembly being connected to the outlet of the dissolved air tank.

Description

Bubble release assembly and aeration device Technical Field The invention relates to the field of gas-liquid mixing, and provides a bubble release assembly and an aeration device. Background Aeration is a method for increasing the oxygen content of water body commonly used in sewage treatment, and the oxygen in the air is forcedly transferred into the liquid by means of mechanical stirring or aeration and the like, so that the contact between the water body and the gas is promoted, the activity of aerobic microorganisms in the water is enhanced, and the decomposition of pollutants is accelerated. These microorganisms can rapidly decompose Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) in water in an environment where the dissolved oxygen content is high, thereby improving water quality. Aeration equipment is usually used in combination with a chemical method or a biological method, has stronger dirt removing capability and quicker dirt removing speed, and is widely applied in the field of sewage treatment. However, in practical application, the aeration system has the problems of extremely high energy consumption and low gas-liquid mass transfer efficiency. The main reason for this phenomenon is that the size of bubbles generated by the conventional aeration equipment is large (usually in millimeter to centimeter level), so that the specific surface area is small, the rising speed of the bubbles in water is high, the contact time is short, and the oxygen can not be sufficiently dissolved and can escape from the water surface, thus causing energy waste. To solve the above problems, various methods for generating fine bubbles have been developed in the related art, such as: A gas dispersion type technology, a gas entraining type technology and a gas dissolving type technology. The air-dispersing type micro-nano aeration main flow technology has the advantages of micro-porous aeration, higher nano and flexible Kong Gaijin type oxygen mass transfer efficiency, high manufacturing cost, easy blocking of air holes, high maintenance cost, short service life of flexible holes, replacement of the existing aerator, simple structure, good oxygen increasing effect, huge energy consumption and low air content due to the fact that the air-entraining type micro-nano aeration main flow technology is adopted, fine air bubbles, high mass transfer efficiency and low energy consumption, and the traditional air bubble releaser is coarse in design, easy to cause air bubble fusion, difficult to crush secondarily and easy to block. Disclosure of Invention The embodiment of the invention provides a bubble release assembly, which realizes the graded conversion of fluid kinetic energy and pressure energy, solves the problem of bubble merging caused by too concentrated energy release, and improves the stability of release of dissolved air water energy and the bubble generation efficiency. The embodiment of the invention also provides an aeration device. An embodiment of the first aspect of the present invention provides a bubble release assembly comprising: An inlet section; a shrink tube connected to the inlet section; The swirl disk is connected with the shrinkage tube, and is provided with a reflecting hole opposite to the shrinkage tube and a diversion channel for guiding the fluid reflected by the reflecting hole into the swirl cavity; A diffuser comprising an inflow port in fluid communication with the cyclone chamber and an expansion port having an inner diameter greater than an inner diameter of the inflow port. According to one embodiment of the invention, the reflecting hole is a conical blind hole recessed towards the cyclone cavity, and the flow guide channel is arranged at the periphery of the conical blind hole and used for introducing the fluid reflected by the reflecting hole into the cyclone cavity in a tangential or spiral mode. According to one embodiment of the invention, the ratio of the diameter of the reflecting hole to the inner diameter of the shrink tube ranges from 1.1 to 1.3; the ratio of the depth of the conical blind hole to the diameter of the reflecting hole is in the range of 0.6 to 1.2. According to one embodiment of the invention, the swirling disc comprises a plurality of blades, the conical blind holes are connected to blade roots of the blades, the blades are provided with an outer convex side close to one adjacent blade and an inner concave side close to the other adjacent blade, the ratio of the bending radius of the outer convex side to the radius of the conical blind holes ranges from 2to 4, and the ratio of the bending radius of the inner concave side to the radius of the conical blind holes ranges from 3 to 4. According to one embodiment of the invention, a first gap is formed between the outer convex side of one fan blade and the inner concave side of the other fan blade, and the ratio of the width of the first gap to the radius of the conical blind hole is in the range of