CN109502777B - High-efficient jet aerator - Google Patents
High-efficient jet aerator Download PDFInfo
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- CN109502777B CN109502777B CN201811551158.2A CN201811551158A CN109502777B CN 109502777 B CN109502777 B CN 109502777B CN 201811551158 A CN201811551158 A CN 201811551158A CN 109502777 B CN109502777 B CN 109502777B
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- gas
- inlet pipe
- mixing chamber
- liquid mixing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses a high-efficiency jet aerator which comprises a water inlet pipe, a nozzle, an air inlet pipe, a gas-liquid mixing chamber and a diffusion pipe, wherein the nozzle is provided with a straight section and a conical section, one end of the straight section, far away from the conical section, is communicated with the water inlet pipe, one end of the conical section, far away from the water inlet pipe, is communicated with the air inlet pipe, and both are communicated with the inlet end of the gas-liquid mixing chamber, the diffusion pipe is communicated with the outlet end of the gas-liquid mixing chamber and is used for outputting a gas-liquid mixture in the gas-liquid mixing chamber, the inner diameter of one end of the conical section, far away from the straight section, is D, and the sum of the length of the water inlet pipe and the length of the straight section is L, wherein L is more than or equal to 10D. The high-efficiency jet aerator has a simple structure, improves the aeration efficiency by 5-8 percent, and can reduce the energy consumption by at least 5 percent.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a high-efficiency jet aerator.
Background
Jet aeration is an aeration mode applied to the current biochemical treatment of sewage, and a jet aerator is a fluid mechanical device which transfers energy and mass through turbulent diffusion effect generated by jet. The working water pump goes out water and passes through the nozzle blowout of efflux aerator, and when the liquid that flows at a high speed passes through the mixing chamber, form local vacuum in the mixing chamber, by intake pipe suction air, air gets into behind the mixing chamber, forms the mixture with liquid, when outwards discharging through the diffuser pipe, and speed slows down, and pressure reinforcing finally forms powerful jet.
At present, in order to improve the efficiency of the jet aerator, higher flow speed is generally obtained by increasing the pressure of a water pump and reducing the diameter of a nozzle so as to reach a larger negative pressure value, more air is introduced, and the dissolved oxygen efficiency is improved. But this approach results in increased energy consumption.
Disclosure of Invention
The invention aims to: provides a high-efficiency jet aerator which has simple structure, high aeration efficiency and low energy consumption.
In order to achieve the purpose, the invention adopts the following technical scheme:
the high-efficiency jet aerator comprises a water inlet pipe, a nozzle, an air inlet pipe, a gas-liquid mixing chamber and a diffusion pipe, wherein the nozzle is provided with a straight section and a conical section, one end of the straight section, far away from the conical section, is communicated with the water inlet pipe, one end of the conical section, far away from the water inlet pipe, is communicated with the air inlet pipe, and the two ends of the conical section are communicated with the inlet end of the gas-liquid mixing chamber, the diffusion pipe is communicated with the outlet end of the gas-liquid mixing chamber and is used for outputting a gas-liquid mixture in the gas-liquid mixing chamber, the inner diameter of one end of the conical section, far away from the straight section, is D, and the sum of the length of the water inlet pipe and the length of the straight section is L, wherein L is more than or equal to 10D.
As a preferable scheme of the high-efficiency jet aerator, the jet aerator further comprises a shell, wherein an air inlet is formed in the shell, one end of the air inlet pipe is fixed in the air inlet, the nozzle and the gas-liquid mixing chamber are both arranged in the shell, the nozzle and the gas-liquid mixing chamber are arranged at intervals to form a transition area, and the air inlet is communicated with the transition area.
As a preferable scheme of the high-efficiency jet aerator, the air inlet is arranged in a staggered way with the outlet end of the conical section.
As a preferred scheme of the high-efficiency jet aerator, a first mounting seat and a second mounting seat are arranged in the shell at intervals, a first mounting hole for the gas-liquid mixing chamber to pass through is formed in the first mounting seat, an annular limiting step is arranged in the first mounting hole, a second mounting hole for the gas-liquid mixing chamber to pass through is formed in the second mounting seat, one end of the gas-liquid mixing chamber is inserted into the first mounting hole and abutted against the limiting step, the other end of the gas-liquid mixing chamber is inserted into the second mounting hole, one end of the diffusion tube is inserted into the second mounting hole and connected with the gas-liquid mixing chamber, and the other end of the diffusion tube extends out of the shell.
As a preferable scheme of the high-efficiency jet aerator, the gas-liquid mixing chamber is in a circular tube shape, and the gas-liquid mixing chamber is screwed in the first mounting hole and the second mounting hole; or the like, or, alternatively,
the gas-liquid mixing chamber is bonded in the first mounting hole and the second mounting hole through a sealant.
As a preferable scheme of the high-efficiency jet aerator, one end of the first mounting seat close to the nozzle is provided with a guide hole communicated with the first mounting hole, the guide hole is conical, the large end of the guide hole is arranged at one end of the first mounting seat close to the nozzle, and the small end of the guide hole is communicated with the first mounting hole.
As a preferable scheme of the high-efficiency jet aerator, a third mounting seat is further arranged in the shell, and the water inlet pipe and the nozzle are both connected with the shell through the third mounting seat.
As a preferable scheme of the high-efficiency jet aerator, a third mounting hole is formed in the third mounting seat in a penetrating manner, one end of the water inlet pipe is inserted into the third mounting hole, the other end of the water inlet pipe extends out of the shell, the straight section is inserted into the third mounting hole, and the conical section is arranged outside the third mounting seat and in the shell.
As a preferable scheme of the high-efficiency jet aerator, the water inlet pipe and the nozzle are screwed in the third mounting hole; or the like, or, alternatively,
the water inlet pipe and the nozzle are bonded in the third mounting hole through sealant.
As a preferable scheme of the high-efficiency jet aerator, the shell is in a round tube shape, and the air inlet direction of the air inlet pipe is vertical to the axial direction of the shell; or the like, or, alternatively,
the air inlet direction of the air inlet pipe and the axis of the shell are arranged in an acute angle.
The embodiment of the invention has the beneficial effects that: the length sum L of the length of the water inlet pipe and the length sum L of the straight section is set to be not less than 10 times of the inner diameter D of the outlet end of the conical section, the inlet end water flow homogenization degree of the conical section can be enabled to reach the highest degree, the water flow turbulence degree is the lowest, the internal water head loss is the lowest, the system energy loss is the lowest, the kinetic energy conversion rate is the highest, when the water flow is sprayed out through the nozzle, the speed of the axis direction reaches the maximum, the negative pressure formed on the periphery is the largest, a larger amount of air is introduced, the optimal shearing effect of fluid on the air is generated, no energy consumption is required to be increased, and the obvious improvement of the gas-liquid ratio can be realized.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a schematic structural diagram of a high-efficiency jet aerator according to an embodiment of the invention.
In the figure:
1. a water inlet pipe; 2. a nozzle; 21. a straight section; 22. a tapered section; 3. an air inlet pipe; 4. a gas-liquid mixing chamber; 5. a diffuser tube; 6. a housing; 61. a transition zone; 7. a first mounting seat; 71. an introduction hole; 8. a second mounting seat; 9. and a third mounting seat.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, the high-efficiency jet aerator according to the embodiment of the invention includes a water inlet pipe 1, a nozzle 2, an air inlet pipe 3, a gas-liquid mixing chamber 4 and a diffuser pipe 5, wherein the nozzle 2 has a straight section 21 and a tapered section 22, one end of the straight section 21, which is far away from the tapered section 22, is communicated with the water inlet pipe 1, one end of the tapered section 22, which is far away from the water inlet pipe 1, is communicated with the air inlet pipe 3, and both are communicated with an inlet end of the gas-liquid mixing chamber 4, the diffuser pipe 5 is communicated with an outlet end of the gas-liquid mixing chamber 4, and is used for outputting a gas-liquid mixture in the gas-liquid mixing chamber 4, an inner diameter of one end of the tapered section 22, which is far away from the straight section 21, is D, and a sum of the length of the water inlet pipe 1 and the length of the straight section 21 is L, wherein L is greater than or equal to 10D.
When water enters the water inlet pipe 1, fluid deviated from the axial direction of the nozzle 2 is generated, the fluid deviated from the axial direction collides with each other, the water flow is in a turbulent state, so that the speed of the axial direction of the nozzle 2 is reduced, but along with the increasing distance of the water after entering the water inlet pipe 1, the speed deviated from the axial direction of the nozzle 2 in the fluid is gradually converted into the speed of the axial direction of the nozzle 2 under the action of the pressure of a wall surface, and the speed deviated from the axial direction is continuously adjusted to finally realize the uniformity of the flow speed direction, under the condition that the sum L of the length of the water inlet pipe 1 and the length of the straight section 21 is not less than 10 times of the inner diameter D of the outlet end of the conical section 22, the water flow uniformity degree at the inlet end of the conical section 22 is highest, the water flow turbulence degree is lowest, the internal water head loss is lowest, the system energy loss is lowest, the kinetic energy conversion rate is highest, when the water flow is sprayed out through the nozzle 2, the speed in the axial direction reaches the maximum, the maximum negative pressure is formed around the axial direction, a larger amount of air is introduced, the optimal shearing effect of the fluid on the gas is generated, and the gas-liquid ratio can be obviously improved without increasing any energy consumption. In the gas-liquid mixing chamber 4, because the fluid velocity increase, the gas-liquid mixing effect improves, and dissolved oxygen efficiency is showing and is improving, simultaneously, because of the gas-liquid mixture behind the 5 blowout of diffusion tube, the gas-liquid area of contact reaches in the sewage of small-particle size bubble, and the rising speed is slow, and dwell time is long, and oxygen transfer efficiency improves, and the aeration effect is showing and promotes.
In one embodiment, the high-efficiency jet aerator further comprises a housing 6, the housing 6 is provided with an air inlet, one end of the air inlet pipe 3 is fixed in the air inlet, the nozzle 2 and the gas-liquid mixing chamber 4 are both arranged in the housing 6, the nozzle 2 and the gas-liquid mixing chamber 4 are arranged at intervals to form a transition region 61, and the air inlet is communicated with the transition region 61.
Optionally, the air inlets are offset from the outlet end of the conical section 22. By staggering the outlet end of the conical section 22 from the air inlet, the high pressure gas can be effectively prevented from directly scouring the fluid, and the gas can shear the fluid at an acute angle, so as to ensure that the flow velocity of the fluid is not greatly slowed down.
In this embodiment, the housing 6 has a circular tube shape, and the air intake direction of the air intake pipe 3 is perpendicular to the axial direction of the housing 6.
In other embodiments, the air inlet direction of the air inlet pipe 3 is arranged at an acute angle with the axis of the housing 6, i.e. the air inlet pipe 3 is inclined towards the end of the housing 6 where the water inlet pipe 1 is arranged. The arrangement can realize that the forward pushing action on the fluid can be realized after the gas is input into the transition area 61 in the shell 6, so that the obstruction to the fluid can be further reduced, and the movement speed of the fluid is accelerated.
In an embodiment, a first mounting seat 7 and a second mounting seat 8 are spaced from each other in the housing 6, a first mounting hole through which the gas-liquid mixing chamber 4 passes is formed in the first mounting seat 7, an annular limiting step is formed in the first mounting hole, a second mounting hole through which the gas-liquid mixing chamber 4 passes is formed in the second mounting seat 8, one end of the gas-liquid mixing chamber 4 is inserted into the first mounting hole and abutted against the limiting step, the other end of the gas-liquid mixing chamber 4 is inserted into the second mounting hole, one end of the diffusion tube 5 is inserted into the second mounting hole and connected with the gas-liquid mixing chamber 4, and the other end of the diffusion tube extends out of the housing 6.
Optionally, the gas-liquid mixing chamber 4 is in a circular tube shape, and the gas-liquid mixing chamber 4 is screwed in the first mounting hole and the second mounting hole. The screw thread screwing mode is convenient for disassembly and assembly and replacement.
In other embodiments, the gas-liquid mixing chamber 4 is bonded in the first mounting hole and the second mounting hole by a sealant. The mode of the adhesive of the sealant is convenient for installation, and simultaneously, the gap between the gas-liquid mixing chamber 4 and the shell 6 is sealed under the action of the sealant, thereby effectively preventing the occurrence of gas leakage or water leakage.
In one embodiment, an introduction hole 71 communicating with the first mounting hole is formed at one end of the first mounting seat 7 close to the nozzle 2, the introduction hole 71 is tapered, a large end of the introduction hole is formed at one end of the first mounting seat 7 close to the nozzle 2, and a small end of the introduction hole is communicated with the first mounting hole. The tapered inlet 71 can guide the fluid and the gas, and the narrowed interface can increase the velocity of the primarily mixed gas and fluid, so that the primarily mixed gas and fluid are accelerated into the gas-liquid mixing chamber 4 to be fully mixed.
Further, the taper of the lead-in hole 71 matches the outer peripheral taper of the tapered section 22.
In an embodiment, a third mounting seat 9 is further disposed in the housing 6, and the water inlet pipe 1 and the nozzle 2 are both connected to the housing 6 through the third mounting seat 9.
In this embodiment, a third mounting hole is formed through the third mounting seat 9, one end of the water inlet pipe 1 is inserted into the third mounting hole, the other end of the water inlet pipe extends out of the housing 6, the straight section 21 is inserted into the third mounting hole, and the tapered section 22 is disposed outside the third mounting seat 9 and inside the housing 6.
Optionally, the water inlet pipe 1 and the nozzle 2 are screwed in the third mounting hole. The screw thread screwing mode is convenient for disassembly and assembly and replacement.
In other embodiments, the water inlet pipe 1 and the nozzle 2 are bonded in the third mounting hole by a sealant. The mode of the adhesive bonding of the sealant is convenient for installation, and simultaneously, under the action of the sealant, the gaps between the nozzle 2 and the shell 6 and between the water inlet pipe 1 and the shell 6 are sealed, thereby effectively preventing the occurrence of air leakage or water leakage.
In addition, the first mounting seat 7, the second mounting seat 8 and the third mounting seat 9 are integrally formed with the housing 6, and may be integrally formed by plastic injection molding or integrally formed by casting material injection molding. The first installation seat 7, the second installation seat 8, the third installation seat 9 and the shell 6 can also be formed in a split mode, namely the first installation seat 7, the second installation seat 8 and the third installation seat 9 are fixed in the shell 6 through welding, screw connection, thread screwing, sealant bonding and other modes.
Compared with the prior art, the high-efficiency jet aerator has a simple structure, improves the aeration efficiency by 5-8 percent, and can reduce the energy consumption by at least 5 percent.
It should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be apparent to those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. The efficient jet aerator is characterized by comprising a water inlet pipe, a nozzle, an air inlet pipe, a gas-liquid mixing chamber and a diffusion pipe, wherein the nozzle is provided with a straight section and a conical section, one end of the straight section, which is far away from the conical section, is communicated with the water inlet pipe, one end of the conical section, which is far away from the water inlet pipe, is communicated with the air inlet pipe, the straight section and the air inlet pipe are both communicated with the inlet end of the gas-liquid mixing chamber, the diffusion pipe is communicated with the outlet end of the gas-liquid mixing chamber and is used for outputting a gas-liquid mixture in the gas-liquid mixing chamber, the inner diameter of one end of the conical section, which is far away from the straight section, is D, and the sum of the length of the water inlet pipe and the length of the straight section is L, wherein L is more than or equal to 10D;
the high-efficiency jet aerator also comprises a shell, wherein the shell is provided with an air inlet, one end of the air inlet pipe is fixed in the air inlet, the nozzle and the gas-liquid mixing chamber are both arranged in the shell, the nozzle and the gas-liquid mixing chamber are arranged at intervals and form a transition area, and the air inlet is communicated with the transition area;
the air inlet direction of the air inlet pipe and the axis of the shell are arranged at an acute angle, and the air inlet pipe faces towards one end, provided with the water inlet pipe, of the shell.
2. The high efficiency jet aerator of claim 1, wherein the air inlets are offset from the outlet end of the conical section.
3. The high-efficiency jet aerator according to claim 1, wherein a first mounting seat and a second mounting seat are arranged at intervals in the housing, a first mounting hole for the gas-liquid mixing chamber to pass through is formed in the first mounting seat, an annular limiting step is arranged in the first mounting hole, a second mounting hole for the gas-liquid mixing chamber to pass through is formed in the second mounting seat, one end of the gas-liquid mixing chamber is inserted into the first mounting hole and abutted against the limiting step, the other end of the gas-liquid mixing chamber is inserted into the second mounting hole, one end of the diffusion pipe is inserted into the second mounting hole and connected with the gas-liquid mixing chamber, and the other end of the diffusion pipe extends out of the housing.
4. The high efficiency jet aerator of claim 3, wherein the gas-liquid mixing chamber is in the shape of a circular tube, and the gas-liquid mixing chamber is screwed into the first mounting hole and the second mounting hole; or the like, or, alternatively,
the gas-liquid mixing chamber is bonded in the first mounting hole and the second mounting hole through a sealant.
5. The high efficiency jet aerator of claim 3 wherein the first mounting base has an inlet opening at an end thereof adjacent to the nozzle, the inlet opening communicating with the first mounting opening, the inlet opening being tapered with a larger end thereof adjacent to the nozzle and a smaller end thereof communicating with the first mounting opening.
6. The high efficiency jet aerator of claim 1 wherein a third mounting base is further disposed within the housing, the inlet tube and the nozzle each being connected to the housing by the third mounting base.
7. The high efficiency jet aerator of claim 6, wherein a third mounting hole is formed through the third mounting seat, one end of the water inlet pipe is inserted into the third mounting hole, the other end of the water inlet pipe extends out of the housing, the straight section is inserted into the third mounting hole, and the tapered section is arranged outside the third mounting seat and inside the housing.
8. The high efficiency jet aerator of claim 7, wherein the water inlet pipe and the nozzle are threaded into the third mounting hole; or the like, or, alternatively,
the water inlet pipe and the nozzle are bonded in the third mounting hole through sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811551158.2A CN109502777B (en) | 2018-12-18 | 2018-12-18 | High-efficient jet aerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811551158.2A CN109502777B (en) | 2018-12-18 | 2018-12-18 | High-efficient jet aerator |
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| Publication Number | Publication Date |
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| CN109502777A CN109502777A (en) | 2019-03-22 |
| CN109502777B true CN109502777B (en) | 2021-08-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109908712B (en) * | 2019-04-24 | 2024-04-02 | 攀钢集团钛业有限责任公司 | Gas-liquid mixer for titanium tetrachloride absorption |
| CN113354071A (en) * | 2021-06-28 | 2021-09-07 | 广东索克曼生态环境科技有限公司 | Micro-nano jet aerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2187381C1 (en) * | 2001-06-04 | 2002-08-20 | Иркутский государственный технический университет | Aerator |
| CN201896094U (en) * | 2010-11-25 | 2011-07-13 | 河南师范大学 | Jet aerator |
| WO2012129717A1 (en) * | 2011-03-25 | 2012-10-04 | Teng Ching-Shih | Power generation system utilizing circulatory water flow in taper conduit |
| CN109028665A (en) * | 2017-06-12 | 2018-12-18 | 美的集团股份有限公司 | Fluid treating device and refrigeration system |
-
2018
- 2018-12-18 CN CN201811551158.2A patent/CN109502777B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2187381C1 (en) * | 2001-06-04 | 2002-08-20 | Иркутский государственный технический университет | Aerator |
| CN201896094U (en) * | 2010-11-25 | 2011-07-13 | 河南师范大学 | Jet aerator |
| WO2012129717A1 (en) * | 2011-03-25 | 2012-10-04 | Teng Ching-Shih | Power generation system utilizing circulatory water flow in taper conduit |
| CN109028665A (en) * | 2017-06-12 | 2018-12-18 | 美的集团股份有限公司 | Fluid treating device and refrigeration system |
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| CN109502777A (en) | 2019-03-22 |
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