CN114409102B - Submersible aerator with counter-rotating diagonal flow impeller - Google Patents
Submersible aerator with counter-rotating diagonal flow impeller Download PDFInfo
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- CN114409102B CN114409102B CN202210001312.9A CN202210001312A CN114409102B CN 114409102 B CN114409102 B CN 114409102B CN 202210001312 A CN202210001312 A CN 202210001312A CN 114409102 B CN114409102 B CN 114409102B
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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)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses a submerged aerator with counter-rotating diagonal flow impellers, which uses counter-rotating diagonal flow impellers which are oppositely placed and operate in a coordinated manner, wherein the upper inverted impeller aims at blast air supply, the lower forward impeller aims at stirring water flow, the diagonal profile of the impeller blades is enlarged, the area of stirring water flow is enlarged, the outer sides of the blades have guiding property, the rotating water flow is conveyed outwards, and the formed maximum area is improved; secondly, a large number of vent holes are formed in the surface of the hub of the upper diagonal flow impeller, the forced air supply is more targeted, a small number of vent holes are formed in the same position of the lower diagonal flow impeller, and in the process that bubbles rise along the surface, other substances in sewage are adhered to the surface as little as possible, so that a drag reduction effect is achieved; the gas is output from the pipe to the aquatic and automatically upwards emerges, and through the oblique flow impeller blade rotation of top downward clapping pressure, the impeller rotation of below has the trend of upwards lifting to rivers, forms mixing region, further promotes the efficiency that air and rivers mix.
Description
Technical Field
The invention belongs to the technical field of diving aeration machines.
Background
Along with the progress of industrialization and urbanization, china faces two major problems of water resource shortage and water pollution. The sewage treatment equipment can effectively solve the problem of water pollution caused by the life and industrial production of people, thereby improving the ecological environment of rivers and lakes and the living environment of residents. The aerator is an important component of sewage treatment equipment, and enhances the contact of organic matters, microorganisms and dissolved oxygen in sewage by injecting air into the sewage, so as to promote the aerobic respiration of the microorganisms to decompose the organic matters in a sewage tank and make the organic matters inorganic, thereby achieving the purpose of purifying water quality.
There are more than 40 patented products, such as: pump type impeller surface aerator, OZBG multi-blade energy-saving aerator, high-power inverted umbrella aerator and rotary brush aerator, surface aerator, propeller aerator, submerged aerator, diversion aerator, rotary brush aerator, booster aerator, etc. The submersible aerator has the advantages of simple structure, strong oxygenation capacity, high power efficiency and the like, so that the submersible aerator becomes common surface aeration equipment for sewage treatment plants.
The submersible aerator has the advantages of simple structure, strong oxygenation capacity, high power efficiency and the like, so the submersible aerator becomes a common surface aeration device for sewage treatment plants, and when the submersible aerator works, the submersible motor under water rotates to drive the impeller to rotate, and air is sucked from the outside through the air inlet pipe and dissolved into water. The impeller rotates to enable surrounding water to flow into the surrounding water area through the water outlet, and the water in the surrounding water area flows to the periphery of the impeller, so that air is dissolved into the water in the process.
The technical scheme of the existing submersible aerator has the following defects:
1. according to the technical scheme, an underwater impeller motor drives an underwater impeller to rotate so as to drive water flow in a sewage tank, impeller blades are regularly arranged and rotate to form a regular cylinder, an effective range generated around is a nearby circumferential area where the impeller blades rotate, and the effective aeration area is limited;
2. the aerator uses only one impeller, the outer surface of the impeller is a coherent entity, the surface is easily roughened gradually after long-time operation, the blocking force is larger and larger, the efficiency of mixed water and air flow is reduced, and the energy is not saved;
3. the blast air inlet of the aerator is arranged under the impeller device, and air bubbles are vertically output and then float upwards at will to be mixed with water flow, so that the aeration efficiency is low.
Disclosure of Invention
In order to solve the problems, the invention provides a submerged aerator with a counter-rotating diagonal flow impeller, which consists of a motor 1, a floating ball 2, a diagonal flow drainage impeller 3, a diagonal flow air compressing impeller 4, a main shaft 5, an air delivery pipe 6, an air inlet device 7, a mixing cavity 8 and a sewage inlet device 9,
the floating ball 2 is connected with a mounting platform of the aerator, the mounting platform floats above the water surface, the motor 1 is arranged at the topmost end of the aerator, the motor 1 is connected with the upper end of the main shaft 5, the lower part of the main shaft 5 is fixedly provided with an oblique flow drainage impeller 3 and an oblique flow air-compressing impeller 4 which have the same shape and opposite mounting directions, and the oblique flow drainage impeller 3 and the oblique flow air-compressing impeller 4 are driven by the motor 1 to relatively rotate;
the air inlet device 7 is arranged on a mounting platform below the motor 1, an air suction impeller 7-1 is arranged in the air inlet device 7, and the air suction impeller 7-1 is fixedly connected with the main shaft 5; the main shaft 5 is sleeved with a gas pipe 6, and the main shaft 5 is of a hollow structure and is provided with a plurality of through holes communicated with the gas pipe 6;
the main shaft 5 is also provided with vent holes communicated with hubs of the diagonal flow drainage impeller 3 and the diagonal flow air impeller 4, the hubs of the diagonal flow drainage impeller 3 and the diagonal flow air impeller 4 respectively encircle a cavity with the main shaft 5, and the hubs of the diagonal flow drainage impeller 3 and the diagonal flow air impeller 4 are provided with a plurality of vent holes; the mixing cavity 8 is arranged outside the diagonal flow drainage impeller 3 and the diagonal flow air compressing impeller 4; the sewage inlet device 9 is arranged above the mixing cavity 8, a water inlet impeller 9-1 connected with the main shaft 5 is arranged in the sewage inlet device 9, sewage is sucked into the mixing cavity 8 from the sewage inlet device 9 and is mixed with air and discharged, and aeration is completed.
The main shaft 5 adopts a group of three circular holes with the large hole size of 20mm diameter and vertically arranged at the compressed air diagonal flow impeller, the distance is 3mm, the circumference of the pipe is halved, and the three groups of circular holes with the same specification are vertically arranged in rows; two round holes with the same specification are formed at the drainage diagonal flow impeller, and three groups are also arranged.
The hub of the diagonal flow air impeller 4 is provided with a large number of vent holes which are arranged in a regular way, the size diameter is 5mm, the same part of the diagonal flow water draining impeller 3 is provided with a small number of vent holes with the same size,
the vertical direction is the y axis, the horizontal direction is the x axis and the z axis, the x coordinate is zero, the fitting curve is carried out according to the y coordinate and the z coordinate, and the wheel hub surface curve equation of the two diagonal flow impellers is: z= -0.00247292867051352y2-0.973410945022914y-29.0786789765909, the blade surface curve equation is: z=0.0037747135342184y2+1.68313037415848y+65.4513408505558.
The invention has the beneficial effects that:
the rotary inclined flow impellers are oppositely and oppositely arranged to cooperatively operate, the upper inverted impeller aims at blast air supply, the lower upright impeller aims at stirring water flow, the inclined profile of the impeller blades is firstly enlarged, the area of stirring water flow is enlarged, the outer sides of the blades have guiding property, the rotating water flow is conveyed outwards, and the formed area of the maximum circular area of the outer side is increased;
secondly, the inside of the impeller is hollow, the wall of the air delivery pipe 6 is provided with large holes, a large number of small holes are formed above the root parts of the blades on the surface of the impeller with oblique flow above, the forced air supply is more targeted, the small holes are formed at the same position of the impeller with oblique flow below, and in the process of rising the air bubbles along the surface, the surface is enabled to be adhered with other substances in sewage as little as possible, so that the drag reduction effect is achieved;
finally, the gas is output from the pipe to the aquatic and automatically upwards emerges, and is downwards clapped through the rotation of the upper diagonal flow impeller blade, and the rotation of the lower impeller has the trend of upwards lifting to the water flow, so that a mixing area is formed, and the efficiency of mixing air and the water flow is further improved. By applying the scheme, the problems of small effective area, high energy consumption and low aeration efficiency of the conventional aerator can be effectively solved.
Drawings
FIG. 1 is a schematic diagram of a submersible aerator with counter-rotating diagonal flow impellers according to the present invention;
FIG. 2 is a cross-sectional view E-E of FIG. 1;
FIG. 3 is a partial block diagram of a diagonal flow drain impeller and diagonal flow compressor impeller;
FIG. 4 is a sectional view of D-D of FIG. 3;
FIG. 5 is a schematic diagram of a diagonal flow impeller hub;
FIG. 6 is a schematic diagram of a diagonal flow impeller blade profile.
Detailed Description
The technical scheme of the invention is further explained in the form of specific examples.
As shown in figure 1, the submersible aerator with counter-rotating diagonal flow impellers in the embodiment mainly comprises a motor 1, a floating ball 2, a diagonal flow drainage impeller 3, a diagonal flow air compressing impeller 4, a main shaft 5, an air delivery pipe 6, an air inlet device 7, a base 8, a mixing cavity 8 and a sewage inlet device 9,
the floating ball 2 is connected with a mounting platform of the aerator, the mounting platform floats above the water surface, the motor 1 is arranged at the topmost end of the aerator, the motor 1 is connected with the upper end of the main shaft 5, the lower part of the main shaft 5 is fixedly provided with an oblique flow drainage impeller 3 and an oblique flow air-compressing impeller 4 which have the same shape and opposite mounting directions, and the oblique flow drainage impeller 3 and the oblique flow air-compressing impeller 4 are driven by the motor 1 to relatively rotate;
the air inlet device 7 is arranged on a mounting platform below the motor 1, an air suction impeller 7-1 is arranged in the air inlet device 7, and the air suction impeller 7-1 is fixedly connected with the main shaft 5; the main shaft 5 is sleeved with a gas pipe 6, and the main shaft 5 is of a hollow structure and is provided with a plurality of through holes communicated with the gas pipe 6; the main shaft 5 is also provided with vent holes communicated with hubs of the diagonal flow drainage impeller 3 and the diagonal flow air impeller 4, the hubs of the diagonal flow drainage impeller 3 and the diagonal flow air impeller 4 respectively encircle a cavity with the main shaft 5, and the hubs of the diagonal flow drainage impeller 3 and the diagonal flow air impeller 4 are also provided with a plurality of vent holes; the mixing cavity 8 is arranged outside the diagonal flow drainage impeller 3 and the diagonal flow air compressing impeller 4; the sewage inlet device 9 is arranged above the mixing cavity 8, a water inlet impeller 9-1 connected with the main shaft 5 is arranged in the sewage inlet device 9, sewage is sucked into the mixing cavity 8 from the sewage inlet device 9 and is mixed with air and discharged, and aeration is completed.
As shown in fig. 2, the center of the air pipe 6 is provided with a main shaft, the main shaft is connected with two impellers and plays a role of transmitting power, the main shaft is of a hollow structure, the inner diameter of the air pipe 6 is 250-300mm, and the inner diameter is 300mm, and the large hole on the center air pipe 6 can be round, square or diamond, and is most preferably round; two opposite and opposite positioning devices are arranged at the bottom of the main shaft the compressed air diagonal flow impeller and the drainage diagonal flow impeller are rotated relatively,
as shown in fig. 3 and 4, the hub and blade profiles of the two diagonal flow impellers have a y axis in the vertical direction and an x axis and a z axis in the horizontal direction, in this state, the x coordinate is zero, the fitted curve is performed according to the y coordinate and the z coordinate, and the hub surface curve equation is: z= -0.00247292867051352y2-0.973410945022914y-29.0786789765909, the blade surface curve equation is: z=0.0037747135342184y2+1.68313037415848y+65.4513408505558.
The main shaft 5 adopts a group of three circular holes with the large hole size of 20mm diameter and vertically arranged at the compressed air diagonal flow impeller, the distance is 3mm, the circumference of the pipe is halved, and the three groups of circular holes with the same specification are vertically arranged in rows; two round holes with the same specification are formed at the drainage diagonal flow impeller, and three groups are also arranged.
The hub of the diagonal flow air impeller 4 is provided with a large number of vent holes which are arranged in a regular manner, the size diameter is 5mm, the same part of the diagonal flow water draining impeller 3 is provided with a small number of vent holes with the same size, the purpose is that a large amount of air is output on the hub surface of the diagonal flow air impeller 4 above, the diagonal flow air impeller is more targeted, air bubbles are pressed downwards by the rotation of the impeller in the natural rising process, a small amount of air bubbles are also generated on the surface of the diagonal flow water draining impeller 3 along the surface rising process, other sewage substances are adhered to the surface as little as possible, the drag reduction effect is achieved, and the process that the diagonal flow water draining impeller 3 lifts water upwards meets the pressed air to perform mixed aeration more effectively.
Claims (5)
1. A submersible aerator with counter-rotating diagonal flow impellers comprises a motor (1), a floating ball (2), diagonal flow drainage impellers (3), diagonal flow air compressing impellers (4), a main shaft (5), a gas pipe (6), an air inlet device (7), a mixing cavity (8) and a sewage inlet device (9),
the floating ball (2) is connected with a mounting platform of the aerator, the mounting platform floats above the water surface, the motor (1) is arranged at the topmost end of the aerator, the motor (1) is connected with the upper end of the main shaft (5), the lower part of the main shaft (5) is fixedly provided with an inclined flow drainage impeller (3) and an inclined flow air-compressing impeller (4) which have the same shape and opposite mounting directions, the inclined flow air-compressing impeller (4) above is inverted, the inclined flow drainage impeller (3) below is positively put, and the inclined flow drainage impeller (3) and the inclined flow air-compressing impeller (4) are driven by the motor (1) to relatively rotate;
the air inlet device (7) is arranged on the mounting platform below the motor (1), an air suction impeller (7-1) is arranged in the air inlet device (7), and the air suction impeller (7-1) is fixedly connected with the main shaft (5); the main shaft (5) is sleeved with a gas pipe (6), and the main shaft (5) is of a hollow structure and is provided with a plurality of through holes communicated with the gas pipe (6);
the main shaft (5) is also provided with a vent hole which is communicated with hubs of the diagonal flow drainage impeller (3) and the diagonal flow air compressing impeller (4), the hubs of the diagonal flow drainage impeller (3) and the diagonal flow air compressing impeller (4) respectively form a cavity with the main shaft (5), and the hubs of the diagonal flow drainage impeller (3) and the diagonal flow air compressing impeller (4) are provided with a plurality of vent holes; the mixing cavity (8) is arranged at the outer sides of the diagonal flow drainage impeller (3) and the diagonal flow air compressing impeller (4); the sewage inlet device (9) is arranged above the mixing cavity (8), a water inlet impeller (9-1) connected with the main shaft (5) is arranged in the sewage inlet device (9), sewage is sucked into the mixing cavity (8) from the sewage inlet device (9) and mixed with air and discharged, and aeration is completed.
2. The submersible aerator with the counter-rotating diagonal flow impeller according to claim 1, characterized in that the main shaft (5) adopts a group of three large through holes vertically arranged at the diagonal flow air compressing impeller (4), and the three groups of round holes of the same specification are vertically arranged in a row of three groups of three equal circle; the inclined flow drainage impeller (3) is provided with two holes and is also divided into three groups.
3. The submersible aerator with counter-rotating diagonal flow impellers according to claim 2, wherein the through holes are circular holes of 20mm diameter each, spaced 3mm apart.
4. The submersible aerator with the counter-rotating diagonal flow impeller according to claim 1, wherein the hub of the diagonal flow air compressing impeller (4) is provided with a plurality of vent holes which are arranged in a regular manner, and the same part of the diagonal flow water draining impeller (3) is provided with a small number of vent holes with the same size.
5. The submersible aerator with counter-rotating diagonal flow impellers according to claim 4, wherein the size of the aeration holes is 5mm in diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210001312.9A CN114409102B (en) | 2022-01-04 | 2022-01-04 | Submersible aerator with counter-rotating diagonal flow impeller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210001312.9A CN114409102B (en) | 2022-01-04 | 2022-01-04 | Submersible aerator with counter-rotating diagonal flow impeller |
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| CN114409102A CN114409102A (en) | 2022-04-29 |
| CN114409102B true CN114409102B (en) | 2023-07-07 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5988600A (en) * | 1997-11-19 | 1999-11-23 | Keepalive, Inc. | Multi-stage aerator |
| CN2347965Y (en) * | 1998-03-26 | 1999-11-10 | 王福成 | Turbine convection aeration water-pumping atomizing aerator |
| JP2003236578A (en) * | 2002-02-14 | 2003-08-26 | Hitachi Kiden Kogyo Ltd | Aeration agitator |
| CN101284696A (en) * | 2008-05-16 | 2008-10-15 | 江苏大学 | Biloded wheel aeration machine under water |
| CN102417236A (en) * | 2011-10-08 | 2012-04-18 | 江苏振华泵业制造有限公司 | Submersible aerator impeller |
| CN103319016A (en) * | 2013-07-12 | 2013-09-25 | 川源(中国)机械有限公司 | Diving aerator impeller |
| CN206915858U (en) * | 2017-07-12 | 2018-01-23 | 上海格兰克林（集团）有限公司 | One kind stirring aerator |
| CN210030198U (en) * | 2019-05-28 | 2020-02-07 | 浙江大学常州工业技术研究院 | Water treatment aeration equipment |
| CN211971922U (en) * | 2019-12-10 | 2020-11-20 | 诸暨市绿净节能环保科技有限公司 | High-efficiency energy-saving aerator |
| CN212581616U (en) * | 2020-05-26 | 2021-02-23 | 廊坊和田生物化工有限公司 | Aeration equipment |
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2022
- 2022-01-04 CN CN202210001312.9A patent/CN114409102B/en active Active
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