CN1264762C - Blade type surface aeration device - Google Patents
Blade type surface aeration device Download PDFInfo
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- CN1264762C CN1264762C CNB2003101001658A CN200310100165A CN1264762C CN 1264762 C CN1264762 C CN 1264762C CN B2003101001658 A CNB2003101001658 A CN B2003101001658A CN 200310100165 A CN200310100165 A CN 200310100165A CN 1264762 C CN1264762 C CN 1264762C
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- surface aeration
- oar
- blade type
- baffle plate
- type surface
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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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Abstract
The present invention relates to a blade type surface aeration device which is characterized in that a blade type surface aeration stirring paddle has no center disc structure and is composed of blades and a circular ring, and the circular ring is positioned under the blades; a self-rotating floating baffle is arranged on a stirring shaft on the blade type surface aeration stirring paddle along the stirring shaft, and the diameter is smaller than the internal diameter of a stirring slot but is not smaller than the external diameter of the surface aeration paddle; the self-rotating floating baffle is provided with a ventilation hole and a radial ventilation tank or is composed of fan-shaped sheets which form inclination angles with the horizontal plane, the center of the self-rotating floating baffle which is composed of the fan-shaped sheets is upwards bulged to form an inverted conic cup shape or is downwards sagged to form a conic cup shape; the stirring shaft on the surface aeration paddle is fixedly provided with a spacing ring, a spacing block or a spacing pin. The present invention has the advantages of large liquid discharge quantity, strong radial jet performance, large air suction pressure difference, large air suction area, small hindrance, good air bubble breaking effect, strong gas-liquid mass transfer performance, high surface aeration efficiency, etc.
Description
Invention field
The present invention relates to a kind of mechanical stirring device that needs surface aeration, particularly a kind of blade type surface aeration equipment is widely used in industries such as petrochemical complex, environmental engineering, biology and pharmacy.
Background technology
Normally used Rushton surface aeration oar, form by center disk and six agitating vanes, agitating vane is vertical to be installed on the center disk, in the surface aeration process, because the diameter of Rushton surface aeration oar is bigger, the diameter of its center disk and area are also bigger, and the suction of gas is had inhibition; Simultaneously, the agitating vane active area is little, and little to the promotion and the perturbation action of liquid, the surface aeration ability will be subjected to certain influence; In the aeration process, the Rushton surface aeration oar rotates near the gas-liquid free surface, and the pressure of blade top is even substantially, and gas phase is not had tangible suction effect, the gas of suction only at blade edge by turbulent flow and shearing force fragmentation.Above-mentioned defective causes the surface aeration oar lifting rate of the type little, and suction tolerance is low, and bubble volume is big, the gas-liquid mass transfer poor performance, and surface aeration efficient is low.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned surface aeration oar, provide a kind of lifting rate big, the radial jet performance is strong, air-breathing pressure reduction is big, and gas suction area is big, hinders little, bubble breaking is effective, and the gas-liquid mass transfer performance is strong, the blade type surface aeration equipment that surface aeration efficient is high.
Technical scheme of the present invention is as follows:
Blade type surface aeration equipment provided by the invention, comprise: circular baffle plate 2 and aeration agitation oar 1 are floated in a steel basin, a vertical spin around the axle spin that is placed on the stir shaft 3 of steel basin center and is installed on the stir shaft 3 certainly, described aeration agitation oar 1 is positioned at spin and it is characterized in that from the below of floating circular baffle plate 2, described aeration agitation oar 1 is positioned at the below of spin from floating circular baffle plate 2, form by vertical blade 12 and horizontal circular ring 11, vertical blade 12 is distributed on the upper surface of horizontal circular ring 11, and its function is the pumping power that strengthens oar; Described spin less than the steel basin internal diameter, is not less than the surface aeration oar external diameter from the diameter that floats circular baffle plate 2;
Described aeration agitation oar 1 is the blade type surface aeration oar, and the vertical blade 12 on it is straight-plate type blade or arc template shape blade, and number is the 6-12 sheet, and vertical blade 12 outer rims are alignd with horizontal circular ring 11 outer rims, and horizontal circular ring 11 internal diameters are the 40-80% of its external diameter;
Described spin is provided with breather hole 71 from floating circular baffle plate 2, be positioned at breather hole 71 circular or square tongue piece 8 are installed under the side direction of surface aeration oar 1 sense of rotation party upstream, tongue piece 8 tilts to the downstream side of surface aeration oar sense of rotation, horizontal by 30 ° of-60 ° of inclination angles, the area of tongue piece 8 is 0.8-2 a times of breather hole 71 area summations;
Described spin is provided with radially ventilating groove 72 from floating circular baffle plate 2, be positioned at ventilating groove 72 square slotted vane 81 is installed under the side direction of surface aeration oar sense of rotation party upstream, square slotted vane 81 tilts to the downstream side of surface aeration oar sense of rotation, horizontal by 30 ° of-60 ° of inclination angles, square slotted vane 81 length are identical with ventilating groove 72 length, highly be self width 0.5-1.5 doubly;
Described spin also can be made up of the fanning strip that becomes 10 ° of-60 ° of inclination angles with horizontal plane from floating circular baffle plate 2;
Described spin total ventilative area of set breather hole 71 on floating circular baffle plate 2 is the 15-80% of self area;
Described spin total ventilative area of set ventilating groove 72 on floating circular baffle plate 2 is the 15-80% of self area;
Described spin raises up from the central authorities of floating circular baffle plate 2, and to be inverted cone cup-shaped or recessed downwards to be normal cone cup-shaped, and its cone angle is 150 °-210 °;
Described spin also can fixedly mount stop collar, limited block or position-limitting pin on the stir shaft 3 between floating circular baffle plate 2 and the surface aeration stirring paddle 1.
Blade type surface aeration equipment provided by the invention, its principle of work is: the blade type surface aeration stirring paddle floats the working space that circular baffle plate forms similar impeller pump certainly with the spin that is positioned at its top, strengthened the radial jet performance of aerating apparatus, increased the lifting rate of device, the suction pressure reduction of gas is increased; Blade type surface aeration stirring paddle blade active area is big, and is strong to the promotion ability of liquid, strengthened the ripple effect of liquid level; The blade type surface aeration stirring paddle does not have the center disk structure, and the suction area of gas is big, and also favourable liquid circulates; In addition, spin shields the blade type surface aeration stirring paddle is relative with gas phase from floating circular baffle plate, and radially forms pressure reduction, makes the aeration ability enhancing of blade type surface aeration stirring paddle; Under the promotion of blade efflux flow, spin is rotated along stir shaft from floating circular baffle plate, and produces the shearing force of appropriateness between certainly floating circular baffle plate of spin and blade type surface aeration stirring paddle, makes bubble obtain effective fragmentation.
In a word, blade type surface aeration equipment provided by the invention has that lifting rate is big, and the radial jet performance is strong, and air-breathing pressure reduction is big, and it is big that gas sucks area, hinders for a short time, and bubble breaking is effective, and the gas-liquid mass transfer performance is strong, the characteristic that surface aeration efficient is high.
Description of drawings
Fig. 1 is a Rushton oar surface aeration equipment structural representation.
Fig. 2 and Fig. 3 are the structural representation of blade type surface aeration stirring paddle.
Fig. 4 is one embodiment of the invention structural representation.
Fig. 5 is further embodiment of this invention structural representation.
Fig. 6 is another embodiment of the present invention structural representation.
Fig. 7 is yet another embodiment of the invention structural representation.
Wherein:
Blade type surface aeration oar 1 self-rotating floating baffle 2 stir shafts 3
Steel basin baffle plate 4 liquid levels 5 spacing rings 6
Limited block 61 position-limitting pins 62 breather holes 71
Ventilating groove 72 tongue pieces 8 slotted vanes 81
Fanning strip 21
Embodiment
Further describe the present invention below in conjunction with drawings and the specific embodiments:
Embodiment 1:
At the gas-liquid two-phase system, at internal diameter φ 380mm, high 600mm, have in the cylindrical steel basin of 4 steel basin baffle plates 4, medium is a water, the high 380mm of liquid level in the groove, and surface aeration oar 1 adopts Rushton surface aeration oar and blade type surface aeration stirring paddle of the present invention respectively, the oar diameter is 190mm, submergence 90mm.When mixing speed was 76r/min, the stirring power consumption of Rushton surface aeration equipment (as Fig. 1) was 3.2W.Adopt blade type surface aeration equipment of the present invention (as Fig. 3), the blade of the blade type surface aeration stirring paddle of present embodiment is the straight-plate type blade, lobe numbers is 6, horizontal circular ring 11 internal diameters are 40% of its external diameter, the diameter of self-rotating floating baffle 2 is 210mm, form by the fanning strip 21 that becomes 10 °, 20 °, 30 ° and 60 ° inclination angles with horizontal plane, the number of fanning strip 21 is 12, power of agitator is respectively 2.3W, 2.4W, 2.4W and 2.5W, reduces 21.9%-28.1% than the stirring power consumption of Rushton surface aeration equipment.Fixed installation position-limitting pin 62 on the stir shaft 3 between self-rotating floating baffle 2 and the blade type surface aeration stirring paddle 1.
Embodiment 2:
At the gas-liquid two-phase system, in the cylindrical steel basin with embodiment 1, medium is a water in structure and size, the high 380mm of liquid level in the groove, surface aeration oar 1 adopts Rushton surface aeration oar and blade type surface aeration stirring paddle of the present invention respectively, and the oar diameter is 190mm, submergence 90mm.The sodium sulfite solution that with concentration is 0.5mol/L adds reagent as stream, adopts stream to add Arbiso process and measures the gas-liquid volume transmission quality coefficient.Stirring power consumption is in the scope of 50.7-140.7W, and the gas-liquid volume transmission quality coefficient of Rushton surface aeration equipment (as Fig. 1) is 0.021-0.093s
-1Adopt blade type surface aeration equipment of the present invention (as Fig. 4), the blade of the blade type surface aeration stirring paddle of present embodiment is an arc template blade, and lobe numbers is 6, and horizontal circular ring 11 internal diameters are 40% of its external diameter.Self-rotating floating baffle 2 is made up of the fanning strip 21 that becomes 30 ° of inclination angles with horizontal plane, and the number of fanning strip 21 is 12, and the diameter of self-rotating floating baffle 2 is 210mm.Spin raises up from the central authorities of floating circular baffle plate and is inverted cone cup-shaped (also can recessed downly be conical cup certainly), and its cone angle is 150 °, 170 °, 190 ° or 210 °; Recording the gas Liquid Mass Transfer Coefficient scope is 0.027-0.11s
-1, increased 19.0%-29.0%, fixed installation position-limitting pin 62 on the stir shaft 3 between self-rotating floating baffle 2 and the blade type surface aeration stirring paddle 1.
Embodiment 3:
At the gas-liquid two-phase system, at internal diameter φ 380mm, high 600mm, have in the cylindrical steel basin of 4 steel basin baffle plates 4, medium is a water, the high 380mm of liquid level in the groove, and surface aeration oar 1 adopts Rushton surface aeration oar and blade type surface aeration stirring paddle of the present invention respectively, the oar diameter is 190mm, submergence 90mm.The sodium sulfite solution that with concentration is 0.5mol/L adds reagent as stream, adopts stream to add Arbiso process and measures the gas-liquid volume transmission quality coefficient.When the stirring power consumption was 106W, the gas-liquid volume transmission quality coefficient of Rushton surface aeration equipment (as Fig. 1) was 0.076s
-1Adopt blade type surface aeration equipment of the present invention (as Fig. 5), the blade of the blade type surface aeration stirring paddle of present embodiment is the straight-plate type blade, lobe numbers is 12, horizontal circular ring 11 internal diameters are 80% of its external diameter, the diameter of self-rotating floating baffle 2 is 210mm, spin has radially ventilating groove 72 on floating circular baffle plate 2, be positioned at ventilating groove 72 the square slotted vane 81 of inclination is installed under the side direction of surface aeration oar 1 sense of rotation party upstream, slotted vane tilts to the downstream side of surface aeration oar sense of rotation, horizontal by 30 ° of inclination angles, slotted vane length is identical with ventilating groove 72 length, highly (also can be 1.5 for 0.5 of ventilating groove 72 width, 1 or 1.2) doubly, when spin is 15% of certainly floating circular baffle plate 2 areas of spin from the total ventilative area that floats set ventilating groove 72 on the circular baffle plate 2,50%, 70% or 80% o'clock, the gas-liquid volume transmission quality coefficient is 0.079s
-1, 0.083s
-1, 0.088s
-1And 0.096s
-1, its gas-liquid volume transmission quality coefficient has increased 3.9%-26.3%; When slotted vane horizontal by 40 ° of inclination angles, the total ventilative area of spin set ventilating groove 72 on floating circular baffle plate 2 for spin from floating circular baffle plate 2 areas 15%, 50%, 70% or 80% o'clock, the gas-liquid volume transmission quality coefficient is 0.081s
-1, 0.086s
-1, 0.092s
-1And 0.099s
-1, its gas-liquid volume transmission quality coefficient has increased 6.6%-30.3%; When slotted vane horizontal by 50 ° of inclination angles, the total ventilative area of spin set ventilating groove 72 on floating circular baffle plate 2 for spin from floating circular baffle plate 2 areas 15%, 50%, 70% or 80% o'clock, the gas-liquid volume transmission quality coefficient is 0.082s
-1, 0.085s
-1, 0.093s
-1And 0.10s
-1, its gas-liquid volume transmission quality coefficient has increased 7.9%-31.6%; When slotted vane horizontal by 60 ° of inclination angles, the total ventilative area of spin set ventilating groove 72 on floating circular baffle plate 2 for spin from floating circular baffle plate 2 areas 15%, 50%, 70% or 80% o'clock, the gas-liquid volume transmission quality coefficient is 0.084s
-1, 0.089s
-1, 0.098s
-1And 0.106s
-1, its gas-liquid volume transmission quality coefficient has increased 10.5%-39.5%.Spin is fixed installation limited block 61 on the stir shaft 3 between floating circular baffle plate 2 and the blade type surface aeration oar 1.
Embodiment 4:
At the gas-liquid two-phase system, at internal diameter φ 380mm, high 600mm, have in the cylindrical steel basin of 4 steel basin baffle plates 4, medium is a water, the high 380mm of liquid level in the groove, and surface aeration oar 1 adopts Rushton surface aeration oar and blade type surface aeration stirring paddle of the present invention respectively, the oar diameter is 190mm, submergence 90mm.The sodium sulfite solution that with concentration is 0.5mol/L adds reagent as stream, adopts stream to add Arbiso process and measures the gas-liquid volume transmission quality coefficient.When the stirring power consumption was 92.6W, the gas-liquid volume transmission quality coefficient of Rushton surface aeration equipment (as Fig. 1) was 0.068s
-1Adopt blade type surface aeration equipment of the present invention (as Fig. 6), the blade of the blade type surface aeration stirring paddle of present embodiment is an arc template blade, lobe numbers is 12, horizontal circular ring 11 internal diameters are 80% of its external diameter, the diameter of self-rotating floating baffle 2 is 210mm, spin has breather hole 71 on floating circular baffle plate 2, be positioned at breather hole 71 circular tongue piece 8 (tongue piece 8 also can be square) is installed under the side direction of surface aeration oar 1 sense of rotation party upstream, tongue piece 8 tilts to the downstream side of surface aeration oar 1 sense of rotation, horizontal by 30 ° of inclination angles, when spin is 15% of the certainly floating circular baffle plate 2 of spin from the total ventilative area that floats set breather hole 71 on the circular baffle plate 2,50%, 70% or 80% o'clock, the gas-liquid volume transmission quality coefficient is 0.071s
-1, 0.074s
-1, 0.078s
-1And 0.083s
-1, its gas-liquid volume transmission quality coefficient has increased 4.4%-22.0%; When tongue piece 8 horizontal by 40 ° of inclination angles, the total ventilative area of spin set breather hole 71 on floating circular baffle plate 2 for spin from floating circular baffle plate 2 15%, 50%, 70% or 80% o'clock, the gas-liquid volume transmission quality coefficient is 0.072s
-1, 0.077s
-1, 0.080s
-1And 0.084s
-1, its gas-liquid volume transmission quality coefficient has increased 5.9%-23.5%; When tongue piece 8 horizontal by 50 ° of inclination angles, the total ventilative area of spin set breather hole 71 on floating circular baffle plate 2 for spin from floating circular baffle plate 2 15%, 50%, 70% or 80% o'clock, the gas-liquid volume transmission quality coefficient is 0.073s
-1, 0.076s
-1, 0.083s
-1And 0.086s
-1, its gas-liquid volume transmission quality coefficient has increased 7.3%-26.5%; When tongue piece 8 horizontal by 60 ° of inclination angles, the total ventilative area of spin set breather hole 71 on floating circular baffle plate 2 for spin from floating circular baffle plate 2 15%, 50%, 70% or 80% o'clock, the gas-liquid volume transmission quality coefficient is 0.073s
-1, 0.077s
-1, 0.086s
-1And 0.091s
-1, its gas-liquid volume transmission quality coefficient has increased 7.3%-33.8%.Spin is fixed installation spacing ring 6 on the stir shaft 3 between floating circular baffle plate 2 and the blade type surface aeration oar 1.
Claims (10)
1, a kind of blade type surface aeration equipment, comprise: circular baffle plate (2) and surface aeration oar (1) are floated in a steel basin, a vertical spin around the axle spin that is placed on the stir shaft (3) of steel basin center and is installed on the stir shaft (3) certainly, described surface aeration oar (1) is positioned at the below of spin from floating circular baffle plate (2), it is characterized in that, described surface aeration oar (1) is the blade type surface aeration oar, be made up of vertical blade (12) and horizontal circular ring (11), vertical blade (12) is distributed on the upper surface of horizontal circular ring (11).
2, by the described blade type surface aeration equipment of claim 1, it is characterized in that: described vertical blade (12) is straight-plate type blade or arc template shape blade, number is the 6-12 sheet, vertical blade (12) outer rim is alignd with horizontal circular ring (11) outer rim, and horizontal circular ring (11) internal diameter is the 40-80% of its external diameter.
3, by the described blade type surface aeration equipment of claim 1, it is characterized in that: described spin is provided with breather hole (71) from floating circular baffle plate (2), be positioned at breather hole (71) circular or square tongue piece (8) are installed under the side direction of surface aeration oar (1) sense of rotation party upstream, tongue piece (8) tilts to the downstream side of surface aeration oar sense of rotation, horizontal by 30 ° of-60 ° of inclination angles, the area of tongue piece (8) is 0.8-2 a times of breather hole (71) area summation.
4, by the described blade type surface aeration equipment of claim 1, it is characterized in that: described spin is provided with radially ventilating groove (72) from floating circular baffle plate (2), be positioned at ventilating groove (72) square slotted vane (81) is installed under the side direction of surface aeration oar sense of rotation party upstream, square slotted vane (81) tilts to the downstream side of surface aeration oar sense of rotation, horizontal by 30 ° of-60 ° of inclination angles, square slotted vane (81) length is identical with ventilating groove (72) length, highly be self width 0.5-1.5 doubly.
5, by the described blade type surface aeration equipment of claim 1, it is characterized in that: described spin is made up of the fanning strip that becomes 10 ° of-60 ° of inclination angles with horizontal plane from floating circular baffle plate (1).
6, by the described blade type surface aeration equipment of claim 3, it is characterized in that: set breather hole (71) is gone up in described spin from floating circular baffle plate (2) total ventilative area is the 15-80% of self area.
7, by the described blade type surface aeration equipment of claim 4, it is characterized in that: set ventilating groove (72) is gone up in described spin from floating circular baffle plate (2) total ventilative area is the 15-80% of self area.
8, by the described blade type surface aeration equipment of claim 1, it is characterized in that: described spin raises up from the central authorities of floating circular baffle plate (2), and to be inverted cone cup-shaped or recessed downwards to be normal cone cup-shaped, and its cone angle is 150 °-210 °.
9, by the described blade type surface aeration equipment of claim 5, it is characterized in that: described spin raises up from the central authorities of floating circular baffle plate (2), and to be inverted cone cup-shaped or recessed downwards to be normal cone cup-shaped, and its cone angle is 150 °-210 °.
10, by claim 1,2,3,4,5,6,7,8 or 9 described blade type surface aeration equipments, it is characterized in that: spin fixedly mounts stop collar, limited block or position-limitting pin on the stir shaft between floating circular baffle plate (2) and the surface aeration oar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101001658A CN1264762C (en) | 2003-10-15 | 2003-10-15 | Blade type surface aeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101001658A CN1264762C (en) | 2003-10-15 | 2003-10-15 | Blade type surface aeration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1607187A CN1607187A (en) | 2005-04-20 |
| CN1264762C true CN1264762C (en) | 2006-07-19 |
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ID=34755853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101001658A Expired - Fee Related CN1264762C (en) | 2003-10-15 | 2003-10-15 | Blade type surface aeration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1264762C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308061C (en) * | 2005-05-25 | 2007-04-04 | 虞培清 | Dispersing type stirring device |
| JP5704928B2 (en) * | 2011-01-11 | 2015-04-22 | 株式会社環境測定サービス | Water circulation device |
| CN102806040A (en) * | 2011-06-02 | 2012-12-05 | 昆山阿基里斯人造皮有限公司 | Stirring paddle |
| CN102989349A (en) * | 2011-09-14 | 2013-03-27 | 中国科学院过程工程研究所 | Multifunctional improved disc-turbine stirring device |
| CN102491399B (en) * | 2011-12-20 | 2013-12-25 | 广西华纳新材料科技有限公司 | Nano calcium carbonate carbonation reaction stirrer |
| CN102674573A (en) * | 2012-05-11 | 2012-09-19 | 孟祥凤 | Pneumatic rotary arm type aerator |
| CN110039676B (en) * | 2019-05-11 | 2021-11-02 | 山东振富医疗器械有限公司 | Polyether sulfone micro-filtration membrane casting solution stirring device |
| CN113995674B (en) * | 2021-09-07 | 2024-03-19 | 北京妙策士医疗科技有限公司 | Box traditional chinese medicine of autogyration divides frying pan |
-
2003
- 2003-10-15 CN CNB2003101001658A patent/CN1264762C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1607187A (en) | 2005-04-20 |
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