Bubble generator and ozone aerator

Abstract

The invention relates to the field of gas-liquid mixing, and provides a bubble generator and an ozone aerator.The bubble generator comprises an inlet connecting end, an outlet connecting end and a throttler assembly, an inlet of the throttler assembly is detachably connected with the inlet connecting end, and an outlet of the throttler assembly is detachably connected with the outlet connecting end; the throttler assembly comprises at least two sets of throttling holes and mixing chambers, and the throttling holes and the mixing chambers are alternately arranged in the direction from the inlet connecting end to the outlet connecting end. And the inner diameter of the throttling hole is continuously reduced. The invention relates to a flow restrictor assembly, which is used for solving the defect of low inflation efficiency in the prior art, a gas-liquid mixed flow enters the flow restrictor assembly with a plurality of groups of throttling holes and a mixing chamber through an inlet connecting end, and the inner diameters of the plurality of groups of throttling holes are sequentially reduced to carry out multiple times of pressurization, gas dissolving, pressure reduction and gas release to obtain bubbles with smaller diameters, such as nano-scale bubbles. By arranging different groups of throttling holes and mixing chambers, the diameter of generated bubbles is adjusted, the adding efficiency of ozone and other gases is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gas-liquid mixing, and in particular to a bubble generator and an ozone aerator. Background Art

[0002] At present, my country's aquaculture industry is developing rapidly, but there is a lack of scientific normative guidance in the breeding process, which will produce a large amount of aquaculture wastewater. The wastewater is rich in nitrogen, phosphorus, potassium and other organic substances, which will cause abnormal proliferation of algae, reduce the dissolved oxygen in the water, make the water black and smelly, and cause a large number of fish to suffocate and die. The algae toxins secreted by the algae are harmful to human health through the cumulative effect of the food chain.

[0003] In aquaculture wastewater, NH3-N, NO3 - -N, NO2 - -N and phosphorus and potassium content are all over the standard. If these substances are not treated, they will flow into surface water sources through rainwater and other channels, thereby causing harm to the surrounding water environment. NH3-N exists in two forms: non-ionic ammonia and ionic ammonia. Both forms of ammonia may be toxic to a certain extent. This is because the penetration of NH3 can pass through most biological membranes, while NH4 + Almost not, so NH3 is more toxic than NH4 + , which will threaten the life and health of aquatic organisms. The water quality cannot reach the surface water quality standard by using water self-purification, regular water change, plant restoration, and adding chemicals. Therefore, a new treatment method is urgently needed to treat aquaculture wastewater.

[0004] In the prior art, a submersible jet ozone aerator is used to treat aquaculture wastewater. However, the bubble generator used in the prior aerator has low inflation efficiency and a complex structure. Summary of the invention

[0005] The present invention provides a bubble generator and an ozone aerator, which are used to solve the defects of low inflation efficiency and complex structure in the prior art, and realize adjusting the diameter of generated bubbles through multiple groups of throttling holes and mixing chambers, so that the device can adapt to different working conditions, improve the ozone addition efficiency and reduce energy consumption.

[0006] The present invention provides a bubble generator, comprising: an inlet connection end, an outlet connection end and a throttle assembly, wherein the inlet of the throttle assembly is detachably connected to the inlet connection end, the outlet of the throttle assembly is detachably connected to the outlet connection end, the throttle assembly comprises at least two groups of throttle holes and mixing chambers, and the throttle holes and the mixing chambers are alternately arranged in a direction from the inlet connection end to the outlet connection end;

[0007] Wherein, the inner diameter of the throttling hole decreases continuously from the inlet connection end to the outlet connection end.

[0008] According to the bubble generator provided by the present invention, the throttling hole includes a contraction section and an expansion section, and the inner diameter of the contraction section decreases from the inlet connection end to the expansion section; and the inner diameter of the expansion section increases from the contraction section to the outlet connection end.

[0009] According to the bubble generator provided by the present invention, the number of the throttling holes in each group increases continuously from the inlet connection end to the outlet connection end.

[0010] According to the bubble generator provided by the present invention, the throttle assembly comprises a first throttle and a second throttle that are detachably connected, the inlet end of the first throttle is detachably connected to the inlet connection end, and the outlet end of the second throttle is detachably connected to the outlet connection end;

[0011] Wherein, the first throttle includes a first throttle hole and a first mixing chamber that are connected, the second throttle includes a second throttle hole and a second mixing chamber that are connected, the first throttle hole, the first mixing chamber, the second throttle hole and the second mixing chamber are connected, and the first throttle hole is proportionally larger than the second throttle hole.

[0012] According to the bubble generator provided by the present invention, the throttle assembly further comprises a third throttle, the inlet end of the third throttle is detachably connected to the outlet end of the second throttle, and the outlet end of the third throttle is detachably connected to the outlet connection end;

[0013] The third throttle comprises a third throttle hole and a third mixing chamber which are connected. The third throttle is connected to the second throttle. The third throttle hole is proportionally smaller than the second throttle hole.

[0014] According to the bubble generator provided by the present invention, the number of the second throttling holes is less than or equal to the number of the third throttling holes.

[0015] According to the bubble generator provided by the present invention, the inlet connection end includes a first channel and a second channel that are connected, the second channel is connected to the throttle assembly, and the inner diameter of the first channel is greater than the inner diameter of the second channel.

[0016] According to the bubble generator provided by the present invention, the inlet connection end also includes a fourth mixing chamber, the fourth mixing chamber is connected to the second channel, the fourth mixing chamber is connected to the first throttling hole, the first throttling hole is connected to the first mixing chamber, the first mixing chamber is connected to the second throttling hole, the second throttling hole is connected to the second mixing chamber, and the second mixing chamber is connected to the outlet connection end.

[0017] The present invention also provides an ozone aerator, comprising a water source system, an ozone source system, a premixing component and the above-mentioned bubble generator;

[0018] Wherein, the water source system is connected to the first inlet of the premix, the ozone source system is connected to the second inlet of the premix, and the inlet connection end of the bubble generator is connected to the outlet of the premix.

[0019] The present invention also provides an ozone aerator, wherein the premixing element comprises a first channel, a second channel and a third channel which are interconnected, wherein the first channel and the second channel are vertically arranged, the first channel is connected to the first inlet, the second channel is connected to the second inlet, and the third channel is connected to the outlet.

[0020] The bubble generator provided by the present invention allows a gas-liquid mixed flow to enter a throttle assembly having multiple groups of throttle holes and a mixing chamber through an inlet connection end. The inner diameters of the multiple groups of throttle holes are reduced in sequence to perform multiple pressurization, dissolved gas, and decompression and gas release to obtain bubbles with smaller diameters, such as nanometer-level bubbles. By setting different numbers of throttle holes and mixing chambers, the diameter of the generated bubbles can be adjusted to adapt to different working conditions, thereby improving the dosing efficiency of gases such as ozone and reducing energy consumption.

[0021] Furthermore, the ozone aerator provided by the present invention has the bubble generator as described above, and thus also has the various advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the bubble generator provided by the present invention;

[0024] Figure 2 is a cross-sectional view of a bubble generator provided by the present invention;

[0025] Figure 3 It is a schematic diagram of the connection of the original parts of the ozone aerator provided by the present invention.

[0026] Reference numerals:

[0027] 100: throttle assembly; 101: inlet connection end; 102: outlet connection end; 103: first channel; 104: second channel; 105: fourth mixing chamber; 106: fifth mixing chamber; 110: first throttle; 120: second throttle; 130: third throttle; 113: first throttle hole; 114: first mixing chamber; 121: second throttle hole; 122: second mixing chamber; 131: third throttle hole; 132: third mixing chamber;

[0028] 200: ozone source system; 201: oxygen cylinder; 202: ozone generator; 203: air valve; 204: one-way valve; 300: water source system; 301: water pool; 302: water pump; 303: water valve; 400: premixing parts. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] Combine the following Figures 1 to 3 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute a limitation on the present invention.

[0034] like Figure 1 As shown, the present invention provides a bubble generator, comprising: an inlet connection end 101, an outlet connection end 102 and a throttle assembly 100, wherein the inlet of the throttle assembly 100 is detachably connected to the inlet connection end 101, the outlet of the throttle assembly 100 is detachably connected to the outlet connection end 102, the throttle assembly 100 comprises at least two groups of throttle holes and mixing chambers, and the throttle holes and the mixing chambers are alternately arranged from the inlet connection end 101 to the outlet connection end 102; wherein, the inner diameter of the throttle hole continuously decreases from the inlet connection end 101 to the outlet connection end 102.

[0035] During operation, when the gas-liquid mixed flow enters the throttle assembly 100 through the inlet connection end 101, the throttle assembly 100 performs multiple pressurization, dissolution, decompression and gas release on the gas-liquid mixed flow through multiple groups of throttling holes and mixing chambers, and the further mixed gas-liquid mixed flow flows out from the outlet connection end 102, thereby making the bubble diameter in the gas-liquid mixed flow smaller, the gas-liquid mixing effect better, and the bubbles more evenly distributed in the liquid. Among them, the throttle assembly 100 is detachably connected to the inlet connection end 101 and the outlet connection end 102, so that it is easy to replace different throttle assemblies 100, and based on the use conditions, multiple pressurization and decompression options such as secondary pressurization and decompression, tertiary pressurization and decompression are realized for the gas-liquid mixed flow.

[0036] That is to say, multiple groups of throttle holes are arranged in series, and each group of throttle holes includes multiple throttle holes. In other words, the gas-liquid mixed flow first passes through one group of throttle holes and a mixing chamber, and then passes through another group of throttle holes and a mixing chamber, and the mixing chamber is used for buffering and mixing after pressure release. The micro-nano bubbles ejected from the throttle assembly 100 have a large surface area, which makes it easier for the gas in the bubbles to dissolve quickly in water. Due to the small diameter of the bubbles, the rising speed is slow, thereby extending the reaction time of the gas in the bubbles in the water, for example, allowing the aquaculture wastewater and the gas to be fully mixed and contacted, thereby improving the purification effect.

[0037] The bubble generator provided by the present invention allows a gas-liquid mixed flow to enter a throttle assembly 100 having multiple groups of throttling holes and a mixing chamber through an inlet connection end 101. The inner diameters of the multiple groups of throttling holes are reduced in sequence to perform multiple pressurization, dissolved gas and decompression and release of gas to obtain bubbles with smaller diameters, such as nano-scale bubbles. By setting different numbers of throttling holes and mixing chambers, the diameter of the generated bubbles can be adjusted to adapt to different working conditions, thereby improving the dosing efficiency of gases such as ozone and reducing energy consumption.

[0038] In one embodiment of the present invention, the throttling hole includes a contraction section and an expansion section. From the inlet connection end 101 to the expansion section, the inner diameter of the contraction section decreases; from the contraction section to the outlet connection end 102, the inner diameter of the expansion section increases.

[0039] Among them, the gas-liquid mixed flow is contracted and pressurized in the contraction section, and then released from the expansion section under reduced pressure. The diameter of the connection between the contraction section and the expansion section is the inner diameter of the throttle hole; for the bubble generator, along the flow direction of the gas-liquid mixed flow, the inner diameter of the throttle hole continues to decrease, that is, the inner diameter of the throttle hole that passes through the gas-liquid mixed flow later is smaller than the throttle hole that passes through the gas-liquid mixed flow first. In the contraction section, due to the reduction of the cross-sectional area, the pressure of the gas-liquid mixed flow increases, and some bubbles are dissolved in the water. In the expansion section, due to the rapid increase of the cross-sectional area, the pressure of the gas-liquid mixed flow suddenly decreases, and the bubbles dissolved in the water precipitate, so that the diameter of the bubbles dissolved in the water continues to decrease.

[0040] like Figure 2 As shown, in another embodiment of the present invention, the number of throttling holes in each group increases continuously from the inlet connection end 101 to the outlet connection end 102 .

[0041] Specifically, multiple throttling holes in each group are arranged at intervals, and the number of throttling holes in each group is continuously increased, thereby improving the mixing effect and increasing the volume of gas-liquid mixture processed by the bubble generator per unit time, so as to improve the treatment efficiency of aquaculture wastewater.

[0042] Continue to refer Figure 1 and Figure 2As shown, in some embodiments of the present invention, the throttle assembly 100 includes a first throttle 110 and a second throttle 120 that are detachably connected, the inlet end of the first throttle 110 is detachably connected to the inlet connection end 101, and the outlet end of the second throttle 120 is detachably connected to the outlet connection end 102; wherein, the first throttle 110 includes a first throttle hole 113 and a first mixing chamber 114 that are connected, and the second throttle 120 includes a second throttle hole 121 and a second mixing chamber 122 that are connected, the first throttle hole 113, the first mixing chamber 114, the second throttle hole 121 and the second mixing chamber 122 are connected, and the first throttle hole 113 is proportionally larger than the second throttle hole 121.

[0043] Specifically, the first throttle 110 and the second throttle 120 in the throttle assembly are detachably connected, such as threaded connection, flange connection or clamping connection. Then, the throttles with throttle holes of different sizes can be adjusted according to actual working conditions, that is, the ratio of the first throttle hole 113 of the first throttle 110 to the second throttle hole 121 in the second throttle 120 can be adjusted to achieve the output of bubbles of different diameters, without the need to replace the bubble generator as a whole, and only a combination of different throttles is required, which has a wider application field and a wider range of applications.

[0044] As far as the first throttle hole 113 is proportionally larger than the second throttle hole 121, the first throttle hole 113 not only has a larger inner diameter than the second throttle hole 121, but also the size of the contraction section and expansion section of the first throttle hole 113 is larger than the contraction section and expansion section of the second throttle hole 121. In other words, the first throttle hole 113 is proportionally larger than the second throttle hole 121 as a whole, that is, the contraction section and expansion section of the first throttle hole 113 and the second throttle hole 121 have the same change trend. The sizes of the multiple first throttle holes 113 of the first throttle 110 are the same and evenly distributed, and the sizes of the multiple second throttle holes 121 of the second throttle 120 are the same and evenly distributed. For example, the first throttle holes 113 are parallel to each other, and the first throttle holes 113 in the first throttle 110 can be evenly distributed at equal angles in the form of concentric circles, or can be distributed at equal intervals in a rectangular shape.

[0045] Furthermore, in other embodiments of the present invention, the throttle assembly 100 also includes a third throttle 130, the inlet end of the third throttle 130 is detachably connected to the outlet end of the second throttle 120, and the outlet end of the third throttle 130 is detachably connected to the outlet connecting end 102; the third throttle 130 includes a third throttle hole 131 and a third mixing chamber 132 that are connected, the third throttle 130 is connected to the second throttle 120, and the third throttle hole 131 is proportionally smaller than the second throttle hole 121.

[0046] In order to further reduce the diameter of bubbles in the water, a third throttle 130 may be added after the second throttle 120. The inner diameter of the third throttle hole 131 of the third throttle 130 is smaller than the inner diameter of the second throttle hole 121. Further, the third throttle hole 131 is proportionally smaller than the size of the second throttle hole 121. Therefore, the throttle assembly 100 may also include a fourth throttle, a fifth throttle, etc. The number of first throttle holes 113 in the first throttle 110 may be equal to or different from the number of second throttle holes 121 in the second throttle 120 and the number of third throttle holes 131 in the third throttle 130. For example, the size of the first throttle hole 113: the size of the second throttle hole 121: the size of the third throttle hole 131 is 1:0.5:0.2.

[0047] For example, in an optional embodiment of the present invention, the number of the second throttle holes 121 is less than or equal to the number of the third throttle holes 131. That is, when the size of the third throttle hole 131 is less than the size of the second throttle hole 121, the number of the third throttle holes 131 is greater than or equal to the number of the second throttle holes 121. For example, the number of the first throttle holes 113: the number of the second throttle holes 121: the number of the third throttle holes 131 is 6:19:38.

[0048] Continue to refer Figure 2 In an optional embodiment of the present invention, the inlet connection end 101 includes a first channel 103 and a second channel 104 that are connected, the second channel 104 is connected to the throttle assembly 100, and the inner diameter of the first channel 103 is greater than the inner diameter of the second channel 104.

[0049] That is to say, the inlet connection end 101 may have a stepped channel to increase the pressure and flow rate of the gas-liquid mixed flow. Of course, a third channel with a larger diameter may also be provided at the front end of the first channel 103 .

[0050] In a specific embodiment of the present invention, the inlet connection end 101 also includes a fourth mixing chamber 105, the fourth mixing chamber 105 is connected to the second channel 104, the fourth mixing chamber 105 is connected to the first throttling hole 113, the first throttling hole 113 is connected to the first mixing chamber 114, the first mixing chamber 114 is connected to the second throttling hole 121, the second throttling hole 121 is connected to the second mixing chamber 122, and the second mixing chamber 122 is connected to the outlet connection end 102.

[0051] The stepped structures of the first channel 103 and the second channel 104 and the fourth mixing chamber 105 form a throttling effect, which has a certain pressure-increasing and pressure-reducing effect on the gas-liquid mixed flow, thereby improving the mixing effect of bubbles and liquid.

[0052] Furthermore, with regard to the outlet connection end 102 , the outlet connection end 102 may include a fifth mixing chamber 106 .

[0053] like Figure 3 As shown, the present invention also provides an ozone aerator, comprising a water source system 300, an ozone source system 200, a premix 400 and the bubble generator of the above embodiment; wherein the water source system 300 is connected to the first inlet of the premix 400, the ozone source system 200 is connected to the second inlet of the premix 400, and the inlet connection end 101 of the bubble generator is connected to the outlet of the premix 400.

[0054] That is to say, the liquid in the water source system 300 and the gas in the ozone source system 200 are premixed in the premixer 400 to generate a mixed flow containing smaller bubbles and form strong turbulence in the premixer 400. After mixing, the mixed flow passes through the bubble generator, and the gas is dissolved by pressurizing and released by decompressing in the bubble generator to obtain bubbles with smaller diameters.

[0055] The water source system 300 may include a water pool 301, a high-pressure water pump 302 and a water valve 303, and the ozone source system 200 may include an oxygen cylinder 201, an ozone generator 202, an air valve 203 and a one-way valve 204. The gas outlet of the oxygen cylinder 201 is connected to the ozone generator 202, the outlet end of the ozone generator 202 is connected to the air valve 203, the outlet end of the air valve 203 is provided with a one-way valve 204, and the outlet end of the one-way valve 204 is connected to a premix 400. The inlet end of the water pump 302 is connected to the water pool 301, the outlet end of the water pump 302 is connected to the water valve 303, the outlet end of the water valve 303 is connected to the premix 400, the outlet end of the premix 400 is connected to a bubble generator, and the outlet of the bubble generator is directly connected to the outside or the water pool 301.

[0056] Specifically, in some optional embodiments of the present invention, the premix 400 includes a first channel 103, a second channel 104 and a third channel that are interconnected, the first channel 103 and the second channel 104 are vertically arranged, the first channel 103 is connected to the first inlet, the second channel 104 is connected to the second inlet, and the third channel is connected to the outlet. For example, the premix 400 is a three-way valve.

[0057] The gas phase flow of the ozone source system 200 and the liquid phase flow of the water source system 300 produce a shear effect in the T-type premixer 400, generating a mixed flow containing smaller ozone-based bubbles and forming strong turbulence in the pipeline, effectively increasing the turbulence of the jet and reducing the particle size of the ozone-based bubbles.

[0058] Working process:

[0059] When the power is turned on, the water pump 302 starts, water is sucked in from the lower part of the pump and rotates at high speed through the impeller in the water pump 302. The water gains potential energy and is quickly ejected from the outlet of the water pump 302. The outlet water then enters the first inlet of the premix 400 through the water valve 303. The ozone generator 202 starts, the valve of the oxygen cylinder 201 is opened to pass oxygen into the ozone generator 202. The ozone generator 202 converts oxygen into ozone, which is ejected from the ozone generator 202. The ozone then enters the one-way valve 204 through the air valve 203. The ozone enters the second inlet of the premix 400 through the one-way valve 204. The gas-liquid mixing ratio is adjusted by adjusting the air valve 203 and the water valve 303 to optimize the shear effect in the premix 400, generate a mixed flow containing ozone-based bubbles, and eject from the outlet of the premix 400.

[0060] Finally, when the mixed flow containing smaller ozone-based bubbles flows through the bubble generator, the mixed flow first enters the fourth mixing chamber 105 through the inlet connection end 101; enters the first throttling hole 113 through the fourth mixing chamber 105; reaches the first mixing chamber 114 through the first throttling hole 113; enters the second throttling hole 121 through the first mixing chamber 114; reaches the second mixing chamber 122 through the second throttling hole 121; enters the third throttling hole 131 through the second mixing chamber 122; the bubbles are pressurized, decompressed, sheared at high speed, strongly turbulent and mixed through the first, second and third throttles to form industrial-grade micro-nano bubbles, and reach the fifth mixing chamber 106 of the outlet connection end 102, and finally ejected from the outlet connection end 102 of the bubble generator to stir, oxygenate and oxidize the aquaculture wastewater for sterilization and remove organic matter in the water; the micro-nano bubbles have a large surface area, so that the ozone in the bubbles can be more easily and quickly dissolved in the water. Due to the small diameter of the bubbles and the slow rising speed, the reaction time of the ozone in the bubbles in the water is prolonged, so that the aquaculture wastewater and the ozone are fully mixed and contacted to react.

[0061] The ozone aerator has high oxygenation efficiency, high ozone utilization rate, low energy consumption and simple structure; ozone and water are premixed through a T-type premixer 400 to obtain a mixed flow containing ozone-based bubbles, so as to achieve improved oxygenation efficiency; a mixed flow containing ozone-based bubbles is generated through the T-type premixer 400, and a bubble generator realizes multiple cavitations of the mixed flow to generate ozone-based micro-nano bubbles, so as to achieve improved ozone utilization rate; compared with the prior art, the micro-nano bubbles generated by the bubble generator of the present application no longer require a large-scale gas dissolving tank and a high-power air compressor, and only a water pump 302 is required, thereby achieving reduced energy consumption and simplified structure of the ozone aerator.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bubble generator, characterized in that: include: An inlet connection end, an outlet connection end and a throttle assembly, wherein the inlet of the throttle assembly is detachably connected to the inlet connection end, the outlet of the throttle assembly is detachably connected to the outlet connection end, and the throttle assembly comprises at least two groups of throttle holes and mixing chambers, and the throttle holes and the mixing chambers are alternately arranged in a direction from the inlet connection end to the outlet connection end; Wherein, the inner diameter of the throttling hole decreases continuously from the inlet connection end to the outlet connection end.

2. The bubble generator according to claim 1, characterized in that: The throttling hole includes a contraction section and an expansion section. The inner diameter of the contraction section decreases from the inlet connection end to the expansion section; and the inner diameter of the expansion section increases from the contraction section to the outlet connection end.

3. The bubble generator according to claim 1, characterized in that: The number of the throttling holes in each group increases continuously from the inlet connection end to the outlet connection end.

4. The bubble generator according to any one of claims 1 to 3, characterized in that: The throttle assembly comprises a first throttle and a second throttle which are detachably connected, wherein the inlet end of the first throttle is detachably connected to the inlet connection end, and the outlet end of the second throttle is detachably connected to the outlet connection end; Wherein, the first throttle includes a first throttle hole and a first mixing chamber that are connected, the second throttle includes a second throttle hole and a second mixing chamber that are connected, the first throttle hole, the first mixing chamber, the second throttle hole and the second mixing chamber are connected, and the first throttle hole is proportionally larger than the second throttle hole.

5. The bubble generator according to claim 4, characterized in that: The throttle assembly further comprises a third throttle, wherein the inlet end of the third throttle is detachably connected to the outlet end of the second throttle, and the outlet end of the third throttle is detachably connected to the outlet connection end; The third throttle comprises a third throttle hole and a third mixing chamber which are connected. The third throttle is connected to the second throttle. The third throttle hole is proportionally smaller than the second throttle hole.

6. The bubble generator according to claim 5, characterized in that: The number of the second throttle holes is less than or equal to the number of the third throttle holes.

7. The bubble generator according to claim 4, characterized in that: The inlet connection end includes a first channel and a second channel that are in communication, the second channel is in communication with the throttle assembly, and an inner diameter of the first channel is greater than an inner diameter of the second channel.

8. The bubble generator according to claim 7, characterized in that: The inlet connection end also includes a fourth mixing chamber, the fourth mixing chamber is connected to the second channel, the fourth mixing chamber is connected to the first throttling hole, the first throttling hole is connected to the first mixing chamber, the first mixing chamber is connected to the second throttling hole, the second throttling hole is connected to the second mixing chamber, and the second mixing chamber is connected to the outlet connection end.

9. An ozone aerator, characterized in that: It comprises a water source system, an ozone source system, a premixing element and a bubble generator as claimed in any one of claims 1 to 8; Wherein, the water source system is connected to the first inlet of the premix, the ozone source system is connected to the second inlet of the premix, and the inlet connection end of the bubble generator is connected to the outlet of the premix.

10. The ozone aerator according to claim 9, characterized in that: The premixer comprises a first channel, a second channel and a third channel which are interconnected, wherein the first channel is vertically arranged with the second channel, the first channel is connected with the first inlet, the second channel is connected with the second inlet, and the third channel is connected with the outlet.

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