CN114634242B - Water pollutant degradation aeration integrated device based on piezoelectric catalysis - Google Patents
Water pollutant degradation aeration integrated device based on piezoelectric catalysis Download PDFInfo
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- CN114634242B CN114634242B CN202210318333.3A CN202210318333A CN114634242B CN 114634242 B CN114634242 B CN 114634242B CN 202210318333 A CN202210318333 A CN 202210318333A CN 114634242 B CN114634242 B CN 114634242B
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- 238000005273 aeration Methods 0.000 title claims abstract description 133
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 21
- 230000015556 catabolic process Effects 0.000 title claims abstract description 16
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 16
- 239000003403 water pollutant Substances 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000003756 stirring Methods 0.000 claims abstract description 51
- 238000009423 ventilation Methods 0.000 claims abstract description 26
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 12
- 231100000719 pollutant Toxicity 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 82
- 230000000087 stabilizing effect Effects 0.000 claims description 49
- 238000005096 rolling process Methods 0.000 claims description 24
- 230000005484 gravity Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 8
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 230000003019 stabilising effect Effects 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 239000002033 PVDF binder Substances 0.000 claims description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 235000015393 sodium molybdate Nutrition 0.000 claims description 3
- 239000011684 sodium molybdate Substances 0.000 claims description 3
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 3
- 238000004528 spin coating Methods 0.000 claims description 3
- YUKQRDCYNOVPGJ-UHFFFAOYSA-N thioacetamide Chemical compound CC(N)=S YUKQRDCYNOVPGJ-UHFFFAOYSA-N 0.000 claims description 3
- DLFVBJFMPXGRIB-UHFFFAOYSA-N thioacetamide Natural products CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 claims description 3
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 94
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 238000005276 aerator Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000006479 redox reaction Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Classifications
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention provides a piezoelectric catalysis-based water pollutant degradation and aeration integrated device, which structurally comprises an aeration device and a piezoelectric film (24); the aeration device comprises an aeration device main body (1), a stirring head (11) and a driving rod (12), wherein the stirring head (11) and the driving rod (12) are positioned inside the aeration device main body (1), the driving rod (12) is hollow, the stirring head (11) is installed on the outer surface of the driving rod (12), the stirring head (11) is hollow, one end of the stirring head (11) is provided with a ventilation hole (23), the inside of the stirring head (11) is communicated with the inside of the driving rod (12) through the ventilation hole (23), the other end of the stirring head (11) is provided with a plurality of strip-shaped air holes (22), and piezoelectric films (24) are distributed around the stirring head (11); the invention realizes the technical effect of removing pollutants in water by combining the piezoelectric catalysis technology and the aeration technology.
Description
Technical Field
The invention relates to a piezoelectric catalysis-based water pollutant degradation and aeration integrated device, and belongs to the field of water pollution treatment.
Background
Various pollutants enter the environmental water body through various ways, and finally cause water body pollution, so that the nearby ecology is influenced, and the environment is deteriorated; therefore, the protection of water bodies, especially the treatment of water pollution, has positive influence on the environmental protection, and the aeration technology is an important component for treating the water body pollution.
The process of forcibly transferring oxygen from the air into the liquid to obtain sufficient dissolved oxygen is called aeration. Under natural conditions, dissolved oxygen in water bodies such as rivers and the like is difficult to supplement quickly, and if the water bodies are in an anoxic or anaerobic state for a long time, the water quality is easy to deteriorate; meanwhile, sewage and wastewater generated by human activities need to enter an environmental water body after being treated by a sewage treatment plant, and the water quality needs to be improved by an activated sludge aerobic section with high dissolved oxygen content in the process; the quality of natural water and effluent water of a sewage treatment plant is closely related to the concentration of dissolved oxygen in water, and the most direct method for improving the concentration of the dissolved oxygen in water is aeration; at present, compared with other biological and chemical oxygen increasing technologies, the aeration technology has the advantages of controllable process, strong oxygen charging capacity, small occupied area and the like, can be divided into types of mechanical aeration, ultramicropore aeration, plug flow aeration, solar energy aeration and the like, is widely applied to various waterworks, sewage treatment plants, rivers, lakes and the like, and can increase the contact of organic matters in water with microorganisms, particularly aerobic microorganisms, while improving the concentration of dissolved oxygen in water, so that the microorganisms can better perform oxidative decomposition on the organic matters in water under the condition of sufficient dissolved oxygen.
At present, the aeration device is used for aeration to treat water body pollution, which is a common method; however, the existing aeration device has the following problems in the use process, one of which is that: part of the aeration devices are immersed in the water body for a long time, and water flow is easy to irrigate to cause damage to internal equipment; and the second step is as follows: the traditional aeration device can not effectively prevent impurities in the water body from entering the gas transmission pipe, so that the gas transmission is influenced, and the aeration efficiency of the aeration device is reduced; and thirdly: the existing aeration device can not realize the capability of effectively degrading pollutants in water; in consideration of practical use conditions, the invention provides the aeration device combining the aeration technology and the piezoelectric catalysis technology, which can realize the efficient degradation of pollutants in water while avoiding the problems.
The piezoelectric catalysis technology is a novel catalysis technology with development potential, is different from the traditional photocatalysis and electrocatalysis, can realize the conversion of mechanical energy to electric energy by the piezoelectric catalysis, and realizes the removal of pollutants by the oxidation-reduction reaction on the surface of a catalyst in the process; the piezoelectric catalytic energy source can come from various vibration, water flow, wind power and the like; therefore, the piezoelectric catalytic technology is combined with the aeration technology to realize aeration and simultaneously remove pollutants in water with high efficiency, and the method has great application potential.
Disclosure of Invention
The invention provides a piezoelectric catalysis-based water pollutant degradation and aeration integrated device, and aims to realize the purposes of aeration and removing pollutants in water by combining a piezoelectric catalysis technology and an aeration technology.
The technical solution of the invention is as follows: a water pollutant degradation and aeration integrated device based on piezoelectric catalysis structurally comprises an aeration device and a piezoelectric film 24; aeration equipment includes aeration equipment main part 1, stirring head 11, actuating lever 12 are located inside aeration equipment main part 1, the inside cavity of actuating lever 12, the surface mounting of actuating lever 12 has stirring head 11, the inside cavity of stirring head 11, there is the venthole 23 stirring head 11's one end, the inside intercommunication of venthole 23 and actuating lever 12 is passed through to stirring head 11's inside, there are a plurality of bar gas pockets 22 stirring head 11's the other end, piezoelectric film 24 distributes around stirring head 11.
Furthermore, the aeration device main body 1 is a hollow cavity, the stirring head 11 and the driving rod 12 are positioned in the hollow cavity, a water permeable window is formed in the side wall of the aeration device main body 1, and a filter screen 6 is installed at the water permeable window; the inner side wall of the aeration device main body 1 is fixedly provided with the slot 10, the piezoelectric film 24 is fixedly arranged on the inner side wall of the aeration device main body 1 through the slot 10, the piezoelectric film 24 is in a rectangular belt shape, and the piezoelectric film 24 can vibrate along with the impact of water flow; the piezoelectric film 24 is vertically arranged, the length direction of the piezoelectric film 24 is the same as that of the aeration device main body 1, and the plane of the piezoelectric film 24 is vertical to the inner side wall of the aeration device main body 1; the piezoelectric film 24 is loaded with a piezoelectric material.
Further, the preparation method of the piezoelectric film 24 comprises the following steps:
1. pouring sodium molybdate and thioacetamide in a mass ratio of 1;
2. cleaning the obtained molybdenum disulfide powder in deionized water and absolute ethyl alcohol, drying and collecting for later use;
3. adding a certain amount of polyvinylidene fluoride (PVDF) into triethyl phosphate, continuously stirring for 1-2 hours, and then adding a certain amount of molybdenum disulfide powder to form a suspension;
4. spin-coating the obtained suspension on a rectangular glass slide by using a spin coater, and standing in deionized water to realize material curing;
5. and finally, placing the rectangular glass slide in air for drying to obtain the rectangular strip-shaped piezoelectric film.
Further, the aeration device also comprises an upper detachable shell 9 and a gas pipe 20; the upper detachable shell 9 is reversely buckled at the upper end of the aeration device main body 1, a gas transmission transfer device 8 is arranged in a space enclosed by the upper detachable shell 9 and the upper end of the aeration device main body 1, the lower end of a gas pipe 20 is communicated with the gas transmission transfer device 8, a driving motor 26 is arranged in the gas transmission transfer device 8, and a power output shaft of the driving motor 26 is connected with the upper end of the driving rod 12; the upper end of the aeration device main body 1 is provided with an upper opening, the center of the upper opening of the aeration device main body 1 is provided with an upper movable bearing 29, the upper end of the driving rod 12 passes through the inner ring of the upper movable bearing 29 and then enters the gas transmission transfer device 8, and the inner ring of the upper movable bearing 29 is fixedly connected with the side wall of the driving rod 12; the gas transmission transfer device 8 comprises a gas transmission cavity shell 25, and a driving motor 26 is fixedly installed in the cavity of the gas transmission cavity shell 25.
Furthermore, a hollow connecting rod 7 is arranged on the outer side of the gas transmission pipe 20, the hollow connecting rod 7 is sleeved on the outer side of the gas transmission pipe 20, the gas transmission pipe 20 penetrates through the hollow connecting rod 7, the lower end of the hollow connecting rod 7 is fixedly connected with the upper surface of the top of the gas transmission cavity shell 25, and the lower end of the gas transmission pipe 20 is communicated with the inside of the cavity of the gas transmission cavity shell 25; the power output shaft of the driving motor 26 is connected with the upper end of the driving rod 12 through a rolling bearing 28; the upper end of the driving rod 12 penetrates through the inner ring of the upper movable bearing 29 to be connected with the inner ring of the rolling bearing 28, the power output shaft of the driving motor 26 is also connected with the inner ring of the rolling bearing 28, the power output shaft of the driving motor 26 and the driving rod 12 are on the same straight line, the outer ring of the rolling bearing 28 is fixed inside the cavity of the gas transmission cavity shell 25 through the supporting frame 27, and the rolling bearing 28 is positioned below the driving motor 26; the rolling bearing 28 is positioned above the upper movable bearing 29, and a plurality of air transmission holes 30 are formed in the partial side wall of the driving rod 12 positioned between the upper movable bearing 29 and the rolling bearing 28; the bottom of the gas transmission cavity shell 25 is inclined in a funnel shape, the lower opening of the gas transmission cavity shell 25 is positioned in the middle of the bottom of the gas transmission cavity shell 25, the lower opening of the gas transmission cavity shell 25 is butted with the aeration device main body 1, the edge of the lower opening of the gas transmission cavity shell 25 is fixedly connected with the outer ring of the upper movable bearing 29, and a gas transfer space is formed inside the cavity of the gas transmission cavity shell 25; the gas delivery hole 30 of the driving rod 12 is located at a height equivalent to that of the inclined surface of the bottom of the gas delivery chamber housing 25.
Furthermore, the aeration device also comprises a ventilation spherical shell 2, a plurality of support rods 5 and a floating ring 4; the ventilation spherical shell 2 is positioned above the upper detachable shell 9, and an air pump 18 is arranged in the ventilation spherical shell 2; the surface of the ventilation spherical shell 2 is provided with a plurality of through holes 16, and the through holes 16 are coated with dust removing nets 17; the bottom of the ventilating spherical shell 2 is provided with a base 19, an air pump 18 is fixedly installed inside the ventilating spherical shell 2, the air pump 18 is fixed on the upper surface of the base 19, an air pipe 20 penetrates through the base 19 to be connected with the air pump 18, and the upper end of the hollow connecting rod 7 is fixedly connected with the base 19; the outer side of the ventilation spherical shell 2 is fixedly connected with a floating ring 4 through a plurality of support rods 5.
Further, the lower end of the aeration device main body 1 is provided with a lower opening, a lower movable bearing 31 is arranged at the center of the lower opening of the aeration device main body 1, the lower end of the driving rod 12 passes through the lower movable bearing 31 to be connected with the magnetic reactance rotation stabilizing device 13, and the inner ring of the lower movable bearing 31 is fixedly connected with the side wall of the driving rod 12; the magnetic reactance rotation stabilizing device 13 comprises a rotation stabilizing device shell 32, a rotation stabilizing device inner cavity 33, a spherical magnet 34 and a magnetic plate 35; the upper opening of the rotation stabilizing device shell 32 is butted with the lower opening of the aeration device main body 1, the edge of the upper opening of the rotation stabilizing device shell 32 is fixedly connected with the outer ring of the lower movable bearing 31, a rotation stabilizing device inner cavity 33 is formed inside the rotation stabilizing device shell 32, the spherical magnet 34 is positioned in the rotation stabilizing device inner cavity 33, the spherical magnet 34 is fixedly connected with the lower end of the driving rod 12, the magnetic plate 35 is positioned on the inner side wall of the rotation stabilizing device shell 32, the magnetic plate 35 surrounds the spherical magnet 34, a gap is reserved between the magnetic plate 35 and the spherical magnet 34, and the magnetic plate 35 and the spherical magnet 34 are oppositely arranged in the same magnetic pole.
Further, an upper water-stop device 36 is installed on the lower side of the gas transmission relay device 8; the upper water stop device 36 comprises a hollow smooth cylindrical rod 37, an angular contact ball bearing 38 and a hollow circular table rod 39, the upper end of the driving rod 12 penetrates through the hollow smooth cylindrical rod 37, the angular contact ball bearing 38 and the hollow circular table rod 39, the hollow smooth cylindrical rod 37 is sleeved on the periphery of the driving rod 12 and is tightly connected with the driving rod 12, the angular contact ball bearing 38 is positioned on the upper side of the hollow smooth cylindrical rod 37, the driving rod 12 penetrates through an inner ring of the angular contact ball bearing 38, the upper end edge of the hollow smooth cylindrical rod 37 is fixedly connected with the inner ring of the angular contact ball bearing 38, the hollow circular table rod 39 is fixedly installed on the upper side of the angular contact ball bearing 38, the lower end aperture of the hollow circular table rod 39 is smaller than the upper end aperture, the lower end aperture edge of the hollow circular table rod 39 is fixedly connected with the outer ring of the angular contact ball bearing 38, and the upper end aperture edge of the hollow circular table rod 39 is fixedly connected with the outer ring of the upper movable bearing 29.
Further, a lower water isolating device 36-1 is installed on the upper side of the magnetic reactance rotation stabilizing device 13; the lower water-resisting device 36-1 comprises a lower hollow smooth cylindrical rod 37-1, a lower corner contact ball bearing 38-1 and a lower hollow circular table rod 39-1; the lower end of the driving rod 12 penetrates through a lower hollow smooth cylindrical rod 37-1, a lower corner contact ball bearing 38-1 and a lower hollow circular table rod 39-1, the lower hollow smooth cylindrical rod 37-1 is sleeved on the periphery of the driving rod 12 and is tightly connected with the driving rod 12, the lower corner contact ball bearing 38-1 is positioned at the lower side of the lower hollow smooth cylindrical rod 37-1, the driving rod 12 penetrates through the lower corner contact ball bearing 38-1, the lower end edge of the lower hollow smooth cylindrical rod 37-1 is fixedly connected with the inner ring of the lower corner contact ball bearing 38-1, the lower hollow circular table rod 39-1 is fixedly installed at the lower side of the lower angular contact ball bearing 38-1, the upper end aperture of the lower hollow circular table rod 39-1 is smaller than the lower end aperture, the upper end aperture edge of the lower hollow circular table rod 39-1 is fixedly connected with the outer ring of the lower corner contact ball bearing 38-1, and the lower end aperture edge of the lower hollow circular table rod 39-1 is fixedly connected with the outer ring of the lower movable bearing 31.
Further, the aeration device also comprises a lower detachable shell 14 and a connecting rod 15; the lower detachable shell 14 is arranged at the lower end of the aeration device main body 1 and covers the periphery of the magnetic resistance rotation stabilizing device 13; the below that shell 14 can be dismantled to the lower part has centre of gravity stabilising arrangement 3, the upper end fixed connection of the bottom lower surface of steady spiral device shell 32 and connecting rod 15, the lower extreme of connecting rod 15 passes the casing that shell 14 can be dismantled to the lower part and is connected with centre of gravity stabilising arrangement 3, and the inside fixed mounting of centre of gravity stabilising arrangement 3 has centre of gravity ball 21.
The invention has the beneficial effects that:
1) The invention realizes the technical effect of removing pollutants in water by combining the piezoelectric catalysis technology and the aeration technology;
2) Through further design, the floating ring and the gravity center stabilizing device are arranged, so that the water surface condition can be better met, the water surface jolt during the operation of the aerator is reduced, the stability during the operation of the aerator is improved, and meanwhile, the floating ring occupies a large area relative to the main body of the aerator, so that the risk of overturning of the aerator can be remarkably reduced;
3) Through further design, the gas transmission transfer device realizes effective transition of external gas from the gas transmission pipe to the driving rod, avoids rotation of the gas transmission pipe and the hollow connecting rod caused by rotation of the driving rod, and can cool the driving motor to a certain extent after the external gas contacts the driving motor, so that the service life of the driving motor is prolonged;
4) Through further design, the driving motor, the driving rod, the stirring head and the strip-shaped air holes are designed, the driving rod is driven to rotate by the driving motor, the stirring head is further driven to stir continuously in water, and gas from the outside is uniformly and sufficiently mixed in the water through the strip-shaped air holes at the tail end of the stirring head, so that the gas and the liquid are fully mixed, and the aeration efficiency of the device is improved;
5) Through further design, the stability of the rotation of the bottom end of the driving rod is realized by arranging the magnetic reactance stabilizing and rotating device and utilizing the principle that homopolar magnets repel each other, and the movement of a connecting rod at the lower end of the magnetic reactance stabilizing and rotating device and a gravity center stabilizing device is not driven;
6) Through further design, the water-resisting device is arranged, and the upper water-resisting device and the lower water-resisting device are reasonably connected, so that external water bodies are prevented from entering the gas transmission transfer device and the magnetic reactance stable rotation device, and the service life of internal components of the device, such as the driving motor and the magnetic reactance stable rotation device, is prolonged;
7) Through further design, the device provided by the invention realizes that the redox reaction aiming at pollutants in water is generated on the surface of the piezoelectric film by utilizing the mechanical force of fast flowing water flow through arranging the slot and the piezoelectric film, so that the effect of degrading the pollutants in water is realized while the aeration of the device is realized.
Drawings
FIG. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic view of the main body and peripheral parts of the aeration apparatus of the present invention.
Fig. 3 is a schematic view of the vent ball housing and surrounding components of the present invention.
FIG. 4 is a schematic view of the center of gravity stabilization device and surrounding components of the present invention.
FIG. 5 is a schematic view of a stirring head according to the present invention.
Fig. 6 is a schematic view of a vent hole of the present invention.
FIG. 7 is a schematic view of a slot and a piezoelectric film according to the present invention.
FIG. 8 is a schematic view of the gas transfer relay apparatus and surrounding components according to the present invention.
FIG. 9 is a schematic view of the stable rotation device of the magnetic reactance of the present invention and the arrangement of the surrounding parts.
Fig. 10 is a schematic view of the upper water-stop device of the present invention.
In the attached drawings, 1 is an aeration device main body; 2 is a ventilated spherical shell; 3 is a center of gravity stabilization device; 4 is a floating ring; 5 is a support rod; 6 is a filter screen; 7 is a hollow connecting rod; 8 is a gas transmission transfer device; 9 is an upper removable housing; 10 is a slot; 11 is a stirring head; 12 is a drive rod; 13 is a magnetic anti-rotation device; 14 is a lower removable housing; 15 is a connecting rod; 16 is a through hole; 17 is a dust removing net; 18 is an air pump; 19 is a base; 20 is a gas delivery pipe; 21 is a gravity center ball; 22 is a bar-shaped air hole; 23 is a vent hole; 24 is a piezoelectric film; 25 is the gas transmission cavity shell; 26 is a driving motor; 27 is a support frame; 28 is a rolling bearing; 29 is an upper live bearing; 30 is a gas transmission hole; 31 is a lower live bearing; 32 is a rotation stabilizer housing; 33 is the inner cavity of the rotation stabilizing device; 34 is a spherical magnet; 35 is a magnetic plate; 36 is an upper water-stop device; 37 is a hollow smooth cylindrical rod; 38 is an angular contact ball bearing; 39 is a hollow circular table rod; 36-1 is a lower water barrier; 37-1 is a lower hollow smooth cylindrical rod; 38-1 is a lower angular contact ball bearing; 39-1 is a lower hollow round table rod.
Detailed Description
A water pollutant degradation and aeration integrated device based on piezoelectric catalysis structurally comprises an aeration device and a piezoelectric film 24; aeration equipment includes aeration equipment main part 1, stirring head 11, actuating lever 12 are located inside aeration equipment main part 1, the inside cavity of actuating lever 12, the surface mounting of actuating lever 12 has stirring head 11, the inside cavity of stirring head 11, there is the venthole 23 stirring head 11's one end, the inside intercommunication of venthole 23 and actuating lever 12 is passed through to stirring head 11's inside, there are a plurality of bar gas pockets 22 stirring head 11's the other end, piezoelectric film 24 distributes around stirring head 11.
The aeration device main body 1 is a hollow cavity, the stirring head 11 and the driving rod 12 are positioned in the hollow cavity, a water permeable window is formed in the side wall of the aeration device main body 1, and a filter screen 6 is installed at the water permeable window; during operation, inside water can get into the hollow cavity of aeration equipment main part 1 through the window of permeating water, debris in the water can effectively be avoided to filter screen 6 and get into aeration equipment main part 1, reduce the collision of debris to 1 internals of aeration equipment main part, have promoted the life of the inside relevant part of whole aeration equipment main part 1.
The inner side wall of the aeration device main body 1 is fixedly provided with a slot 10, the piezoelectric film 24 is fixedly arranged on the inner side wall of the aeration device main body 1 through the slot 10, the piezoelectric film 24 is in a rectangular belt shape, and the piezoelectric film 24 can vibrate along with the impact of water flow; preferably, the piezoelectric film 24 is vertically arranged, the length direction of the piezoelectric film 24 is the same as the length direction of the aeration device body 1, and the plane of the piezoelectric film 24 is perpendicular to the inner side wall of the aeration device body 1.
The preparation method of the piezoelectric film 24 comprises the following steps:
1. pouring sodium molybdate and thioacetamide in a mass ratio of 1; the certain time is preferably 20 hours to 26 hours, and is further preferably 24 hours; the certain temperature is preferably 180-220 ℃, and further preferably 200 ℃;
2. cleaning the obtained molybdenum disulfide powder in deionized water and absolute ethyl alcohol, drying and collecting for later use;
3. adding a certain amount of polyvinylidene fluoride (PVDF) into triethyl phosphate, continuously stirring for 1-2 hours, and then adding a certain amount of molybdenum disulfide powder to form a suspension;
4. spin-coating the obtained suspension on a rectangular glass slide by using a spin coater, and standing in deionized water to realize material curing;
5. and finally, placing the rectangular glass slide in air for drying to obtain the rectangular strip-shaped piezoelectric film.
The piezoelectric film 24 may be a commercially available piezoelectric film.
The piezoelectric film 24 is loaded with a piezoelectric material, preferably molybdenum disulfide.
The aeration device also comprises an upper detachable shell 9 and a gas pipe 20; the upper detachable shell 9 is reversely buckled at the upper end of the aeration device main body 1, a gas transmission transfer device 8 is arranged in a space enclosed by the upper detachable shell 9 and the upper end of the aeration device main body 1, the lower end of a gas pipe 20 is communicated with the gas transmission transfer device 8, a driving motor 26 is arranged in the gas transmission transfer device 8, and a power output shaft of the driving motor 26 is connected with the upper end of the driving rod 12; the upper detachable shell 9 can be detached after the aeration device finishes working, so that related personnel can clean the interior of the aeration device main body 1 or replace related parts conveniently.
The aeration device main body 1 is cylindrical barrel-shaped, and the upper part of the aeration device main body is detachably provided with the shell 9 which is arranged at the upper end of the cylindrical barrel-shaped aeration device main body 1.
The upper end of the aeration device main body 1 is provided with an upper opening, the center of the upper opening of the aeration device main body 1 is provided with an upper movable bearing 29, the upper end of the driving rod 12 passes through the inner ring of the upper movable bearing 29 and then enters the gas transmission transfer device 8, and the inner ring of the upper movable bearing 29 is fixedly connected with the side wall of the driving rod 12.
The gas transmission transfer device 8 comprises a gas transmission cavity shell 25, a driving motor 26 and a supporting frame 27; the supporting frame 27 is fixedly arranged on the inner wall of the upper side of the gas transmission cavity shell 25, and the driving motor 26 is fixedly arranged in the cavity of the gas transmission cavity shell 25; the support 27 is preferably a tripod.
The outer side of the air delivery pipe 20 is provided with a hollow connecting rod 7, the hollow connecting rod 7 is sleeved on the outer side of the air delivery pipe 20, the air delivery pipe 20 penetrates through the hollow connecting rod 7, the lower end of the hollow connecting rod 7 is fixedly connected with the upper surface of the top of the air delivery cavity shell 25, and the lower end of the air delivery pipe 20 is communicated with the inside of the cavity of the air delivery cavity shell 25.
The power output shaft of the driving motor 26 is connected with the upper end of the driving rod 12 through a rolling bearing 28; the inner ring of the rolling bearing 28 is connected with the upper end of the driving rod 12, the power output shaft of the driving motor 26 is also connected with the inner ring of the rolling bearing 28, the power output shaft of the driving motor 26 and the driving rod 12 are on the same straight line, the outer ring of the rolling bearing 28 is fixed inside the cavity of the gas transmission cavity shell 25 through the supporting frame 27, and the rolling bearing 28 is located below the driving motor 26.
The upper end of the driving rod 12 passes through the inner ring of the upper movable bearing 29 and is connected with the inner ring of the rolling bearing 28; the rolling bearing 28 is positioned above the upper movable bearing 29, and a plurality of gas transmission holes 30 with larger apertures are formed in the partial side wall of the driving rod 12 positioned between the upper movable bearing 29 and the rolling bearing 28; the gas transfer holes 30 with larger pore diameters preferably have a pore diameter in the range of 1.0 cm to 1.5 cm.
The bottom of the gas transmission cavity shell 25 is inclined in a funnel shape, the lower opening of the gas transmission cavity shell 25 is positioned in the middle of the bottom of the gas transmission cavity shell 25, the lower opening of the gas transmission cavity shell 25 is butted with the aeration device main body 1, the edge of the lower opening of the gas transmission cavity shell 25 is fixedly connected with the outer ring of the upper movable bearing 29, and a gas transfer space is formed inside the cavity of the gas transmission cavity shell 25; the height of the position of the gas transmission hole 30 on the driving rod 12 is equivalent to that of the position of the inclined plane at the bottom of the gas transmission cavity shell 25; when the gas transmission device works, external gas enters the gas transmission space in the gas transmission cavity shell 25 through the gas transmission pipe 20, then enters the driving rod 12 through the gas transmission hole 30 on the driving rod 12, and is transmitted to the stirring head 11 through the driving rod 12 for aeration; the external gas forms transfer flow in the gas transfer space in the gas transfer cavity shell 25, and the gas is directly contacted with the driving motor 26 in the gas transfer cavity shell 25 when flowing, so that the driving motor 26 can effectively cool when working in the gas transfer cavity shell 25, and the service life of the driving motor 26 is prolonged; meanwhile, the gas enters the driving rod 12 from the gas transmission hole 30 and moves to each stirring head 11 along the driving rod 12; the use of two bearings, namely the rolling bearing 28 and the upper movable bearing 29, realizes that the upper end of the driving rod 12 is fixed while the driving rod 12 can effectively rotate; because the gas is stored through the gas transferring space in the gas transferring cavity shell 25 and then automatically enters the driving rod 12 from the gas transferring hole 30, the technical effect that the gas can smoothly enter the driving rod 12 when the driving rod 12 rotates is realized, and the components such as the hollow connecting rod 7, the gas transferring pipe 20, the ventilating spherical shell 2, the plurality of supporting rods 5, the floating ring 4 and the like are ensured not to be driven to rotate when the driving rod 12 rotates, so that the stability of the whole device in the operation process is improved.
The aeration device also comprises a ventilation spherical shell 2, a plurality of support rods 5 and a floating ring 4; the ventilation spherical shell 2 is positioned above the upper detachable shell 9, and an air pump 18 is arranged in the ventilation spherical shell 2; the surface of the ventilation spherical shell 2 is provided with a plurality of through holes 16, and the through holes 16 are coated with dust removing nets 17; the bottom of the ventilation spherical shell 2 is provided with a base 19, an air pump 18 is fixedly arranged in the ventilation spherical shell 2, the air pump 18 is fixed on the upper surface of the base 19, an air pipe 20 penetrates through the base 19 to be connected with the air pump 18, and the upper end of the hollow connecting rod 7 is fixedly connected with the base 19; the hollow connecting rod 7 ensures the firm connection of the ventilating spherical shell 2 and the gas transmission transfer device 8.
The outer side of the ventilation spherical shell 2 is fixedly connected with a floating ring 4 through a plurality of support rods 5; the floating ring 4 ensures that the through hole 16 on the surface of the ventilation spherical shell 2 is always positioned above the surface of the water body, so that the water body is prevented from entering the device through the through hole 16.
The ventilation spherical shell 2 adopts an inclined upper surface, and the through holes 16 are coated with the dust removal net 17, so that external dust can be prevented from entering the ventilation spherical shell 2 to block the air pump 18, and long-term use of the equipment is ensured; when the spherical shell 2 works, outside air enters the inside of the spherical shell 2 through the through holes 16 on the surface of the spherical shell 2 and then is injected into the air conveying pipe 20 through the air pump 18, and the oxygen supply amount in unit time can be obviously increased through the air pump 18; the floating ring 4 is filled with air and is connected with the ventilating spherical shell 2 through the support rod 5, so that the water surface can be effectively prevented from bumping, and the effect of stably supporting the aeration device is achieved; preferably, the vent spherical shell 2 is in an inverted cone shape, the contact area of the vent spherical shell 2 and the outside air is enlarged by the inverted cone-shaped vent spherical shell, and meanwhile, the water accumulation on the surface of the through hole is reduced by the inclined upper surface of the spherical shell.
The lower end of the aeration device body 1 is provided with a lower opening, the center of the lower opening of the aeration device body 1 is provided with a lower movable bearing 31, the lower end of the driving rod 12 penetrates through the lower movable bearing 31 to be connected with the magnetic resistance rotation stabilizing device 13, and the inner ring of the lower movable bearing 31 is fixedly connected with the side wall of the driving rod 12.
The upper movable bearing 29 and the lower movable bearing 31 are preferably deep groove ball bearings of the same type.
The magnetic reactance rotation stabilizing device 13 comprises a rotation stabilizing device shell 32, a rotation stabilizing device inner cavity 33, a spherical magnet 34 and a magnetic plate 35; the upper opening of the rotation stabilizing device shell 32 is butted with the lower opening of the aeration device main body 1, the edge of the upper opening of the rotation stabilizing device shell 32 is fixedly connected with the outer ring of the lower movable bearing 31, a rotation stabilizing device inner cavity 33 is formed inside the rotation stabilizing device shell 32, the spherical magnet 34 is positioned in the rotation stabilizing device inner cavity 33, the spherical magnet 34 is fixedly connected with the lower end of the driving rod 12, the magnetic plate 35 is positioned on the inner side wall of the rotation stabilizing device shell 32, the magnetic plate 35 surrounds the spherical magnet 34, a gap is reserved between the magnetic plate 35 and the spherical magnet 34, and the magnetic plate 35 and the spherical magnet 34 are oppositely arranged in the same magnetic pole; when the device works, the driving rod 12 rotates in the inner cavity 33 of the rotation stabilizing device through the lower movable bearing 31, the spherical magnet 34 fixedly installed at the lower end of the driving rod 12 is repelled with the magnetic plate 35 inside the shell 32 of the rotation stabilizing device due to the phenomenon of repulsion of homopolar magnetic fields, when the stress of the spherical magnet 34 reaches stability, the driving rod 12 can stably rotate in the magnetic resistance rotation stabilizing device 13, the driving rod 12 can be prevented from driving components such as the connecting rod 15 and the gravity center stabilizing device 3 to rotate, and the running stability of the device is improved.
An upper water-resisting device 36 is arranged on the lower side of the gas transmission transfer device 8; the water-resisting device 36 comprises a hollow smooth cylindrical rod 37, an angular contact ball bearing 38 and a hollow circular table rod 39, the upper end of the driving rod 12 penetrates through the hollow smooth cylindrical rod 37, the angular contact ball bearing 38 and the hollow circular table rod 39, the hollow smooth cylindrical rod 37 is sleeved on the periphery of the driving rod 12 and is tightly connected with the driving rod 12, the angular contact ball bearing 38 is positioned on the upper side of the hollow smooth cylindrical rod 37, the driving rod 12 penetrates through an inner ring of the angular contact ball bearing 38, the upper end edge of the hollow smooth cylindrical rod 37 is close to the angular contact ball bearing 38 and is fixedly connected with the inner ring of the angular contact ball bearing 38, the hollow circular table rod 39 is fixedly installed on the upper side of the angular contact ball bearing 38, the lower end aperture of the hollow circular table rod 39 is smaller than the upper end aperture, the lower end aperture edge of the hollow circular table rod 39 is fixedly connected with the outer ring of the angular contact ball bearing 38, and the upper end aperture edge of the hollow circular table rod 39 is fixedly connected with the outer ring of the upper movable bearing 29; when the actuating lever 12 rotates, drive the level and smooth cylindrical pole 37 of cavity and rotate, because angular contact ball bearing 38's use, the level and smooth cylindrical pole 37 of cavity rotates and can not drive the rotation of cavity round platform pole 39, and then does not influence the normal operating condition of defeated gas transfer device 8, and the level and smooth cylindrical pole 37 of cavity and actuating lever 12 zonulae occludens simultaneously can avoid outside water to get into defeated gas transfer device 8, has prolonged the life of device inner assembly.
A lower water isolating device 36-1 is arranged on the upper side of the magnetic reactance steady rotation device 13; the lower water-resisting device 36-1 comprises a lower hollow smooth cylindrical rod 37-1, a lower corner contact ball bearing 38-1 and a lower hollow circular table rod 39-1; the lower hollow smooth cylindrical rod 37-1, the lower corner contact ball bearing 38-1 and the lower hollow circular platform rod 39-1 in the lower water-resisting device 36-1 are the same as the hollow smooth cylindrical rod 37, the angular contact ball bearing 38 and the hollow circular platform rod 39 in the water-resisting device 36; the lower end of the driving rod 12 penetrates through a lower hollow smooth cylindrical rod 37-1, a lower corner contact ball bearing 38-1 and a lower hollow circular platform rod 39-1, the lower hollow smooth cylindrical rod 37-1 is sleeved on the periphery of the driving rod 12 and is tightly connected with the driving rod 12, the lower corner contact ball bearing 38-1 is positioned at the lower side of the lower hollow smooth cylindrical rod 37-1, the driving rod 12 penetrates through an inner ring of the lower corner contact ball bearing 38-1, the lower end edge of the lower hollow smooth cylindrical rod 37-1 is close to the lower corner contact ball bearing 38-1 and is fixedly connected with the inner ring of the lower corner contact ball bearing 38-1, the lower hollow circular platform rod 39-1 is fixedly installed at the lower side of the lower angular contact ball bearing 38-1, the upper end aperture of the lower hollow circular platform rod 39-1 is smaller than the lower end aperture, the upper end aperture edge of the lower hollow circular platform rod 39-1 is fixedly connected with the outer ring of the lower corner contact ball bearing 38-1, and the lower end aperture edge of the lower hollow circular platform rod 39-1 is fixedly connected with the lower movable bearing 31; when the driving rod 12 rotates, the lower hollow smooth cylindrical rod 37-1 is driven to rotate, due to the use of the lower corner contact ball bearing 38-1, the lower hollow smooth cylindrical rod 37-1 rotates and cannot drive the lower hollow circular table rod 39-1 to rotate, so that the normal working state of the magnetic reactance rotation stabilizing device 13 is not influenced, meanwhile, the lower hollow smooth cylindrical rod 37-1 is tightly connected with the driving rod 12, so that the external water body can be prevented from entering the magnetic reactance rotation stabilizing device 13, and the service life of internal components of the device is prolonged.
The aeration device also comprises a lower detachable shell 14 and a connecting rod 15; the lower detachable shell 14 is arranged at the lower end of the aeration device main body 1 and covers the periphery of the magnetic resistance stabilizing device 13; the shell 14 can be dismantled to the lower part can avoid the impact of outside water to the steady rotary device 13 of magnetic reactance, and the shell 14 can be dismantled after aeration equipment finishes working in the lower part, makes relevant personnel conveniently wash aeration equipment main part 1 inside or change relevant part.
A gravity center stabilizing device 3 is arranged below the lower detachable shell 14, the lower surface of the bottom of the stabilizing device shell 32 is fixedly connected with the upper end of a connecting rod 15, the lower end of the connecting rod 15 penetrates through the shell of the lower detachable shell 14 to be connected with the gravity center stabilizing device 3, a gravity center ball 21 is fixedly arranged in the gravity center stabilizing device 3, and the size of the gravity center ball 21 can be changed according to the actual water level condition; through setting up gas transmission transfer device 8 and magnetic reactance steady rotation device 13, can realize that actuating lever 12 rotates the stability that does not influence other parts simultaneously, the stability of device in the water is further improved to the setting of focus ball 21.
When the aerator works, sewage enters the interior of the aerator main body 1 through the filter screen 6 on the outer side of the aerator main body 1, then the air pump 18 is started, outside air enters the interior of the aeration spherical shell 2 through the through holes 16 on the surface of the aeration spherical shell 2, then the outside air is injected into the air delivery pipe 20 through the air pump 18, the outside air enters the air transfer space in the air delivery cavity shell 25 through the air delivery pipe 20, then enters the interior of the driving rod 12 through the air delivery holes 30 on the driving rod 12, and the outside air is delivered to the stirring head 11 through the driving rod 12 for aeration; the driving rod 12 is driven to rotate by the driving motor 26, so that the stirring head 11 is driven to stir in water continuously, gas is sprayed out from the strip-shaped air holes 22 of the stirring head 11 to form aeration, and the aeration efficiency of the device is improved by stirring and mixing the gas; the stirring head 11 rotates at a high speed, so that the gas is fully mixed with the water body, the oxygen is fully contacted with the polluted water body, the gas and the liquid are fully mixed, and the aeration efficiency of the device is improved; meanwhile, the stirring head 11 rotates rapidly to cause the flow velocity of water flow in the aeration device main body 1 to be accelerated, the content of dissolved oxygen in water is increased, the water flow impacts the piezoelectric film 24 fixed by the slot 10 around the inner wall of the aeration device main body 1 to generate vibration, the water flow flowing at high speed collides with the piezoelectric film 24, so that the piezoelectric material on the piezoelectric film 24 obtains energy, and the surface of the piezoelectric material is stimulated to generate redox reaction, and finally, the degradation of pollutants in the water body is realized; the outside air is preferably directly used as the outside air, and the outside air can also be supplied by using special oxygen.
Claims (7)
1. A water pollutant degradation and aeration integrated device based on piezoelectric catalysis is characterized by comprising an aeration device and a piezoelectric film (24); the aeration device comprises an aeration device main body (1), a stirring head (11) and a driving rod (12), wherein the stirring head (11) and the driving rod (12) are positioned inside the aeration device main body (1), the driving rod (12) is hollow, the stirring head (11) is installed on the outer surface of the driving rod (12), the stirring head (11) is hollow, one end of the stirring head (11) is provided with a ventilation hole (23), the inside of the stirring head (11) is communicated with the inside of the driving rod (12) through the ventilation hole (23), the other end of the stirring head (11) is provided with a plurality of strip-shaped air holes (22), and piezoelectric films (24) are distributed around the stirring head (11);
the aeration device also comprises an upper detachable shell (9) and a gas pipe (20); the upper detachable shell (9) is reversely buckled at the upper end of the aeration device main body (1), a gas transmission transfer device (8) is arranged in a space surrounded by the upper detachable shell (9) and the upper end of the aeration device main body (1), the lower end of a gas pipe (20) is communicated with the gas transmission transfer device (8), a driving motor (26) is arranged in the gas transmission transfer device (8), and a power output shaft of the driving motor (26) is connected with the upper end of the driving rod (12); the upper end of the aeration device main body (1) is provided with an upper opening, the center of the upper opening of the aeration device main body (1) is provided with an upper movable bearing (29), the upper end of the driving rod (12) passes through the inner ring of the upper movable bearing (29) and then enters the gas transmission transfer device (8), and the inner ring of the upper movable bearing (29) is fixedly connected with the side wall of the driving rod (12); the gas transmission transfer device (8) comprises a gas transmission cavity shell (25), and a driving motor (26) is fixedly installed in the cavity of the gas transmission cavity shell (25);
the outer side of the gas transmission pipe (20) is provided with a hollow connecting rod (7), the hollow connecting rod (7) is sleeved on the outer side of the gas transmission pipe (20), the gas transmission pipe (20) penetrates through the hollow connecting rod (7), the lower end of the hollow connecting rod (7) is fixedly connected with the upper surface of the top of the gas transmission cavity shell (25), and the lower end of the gas transmission pipe (20) is communicated with the interior of the cavity of the gas transmission cavity shell (25); the power output shaft of the driving motor (26) is connected with the upper end of the driving rod (12) through a rolling bearing (28); the upper end of the driving rod (12) penetrates through the inner ring of the upper movable bearing (29) to be connected with the inner ring of the rolling bearing (28), the power output shaft of the driving motor (26) is also connected with the inner ring of the rolling bearing (28), the power output shaft of the driving motor (26) and the driving rod (12) are in the same straight line, the outer ring of the rolling bearing (28) is fixed inside the cavity of the air transmission cavity shell (25) through the supporting frame (27), and the rolling bearing (28) is located below the driving motor (26); the rolling bearing (28) is positioned above the upper movable bearing (29), and a plurality of gas transmission holes (30) are formed in the partial side wall of the driving rod (12) positioned between the upper movable bearing (29) and the rolling bearing (28); the bottom of the gas transmission cavity shell (25) is inclined in a funnel shape, the lower opening of the gas transmission cavity shell (25) is located in the middle of the bottom of the gas transmission cavity shell (25), the lower opening of the gas transmission cavity shell (25) is in butt joint with the aeration device main body (1), the edge of the lower opening of the gas transmission cavity shell (25) is fixedly connected with the outer ring of the upper movable bearing (29), and a gas transfer space is formed inside the cavity of the gas transmission cavity shell (25); the height of the position of the air transmission hole (30) on the driving rod (12) is equivalent to that of the position of the inclined plane at the bottom of the air transmission cavity shell (25);
the aeration device also comprises a ventilation spherical shell (2), a plurality of support rods (5) and a floating ring (4); the ventilation spherical shell (2) is positioned above the upper detachable shell (9), and an air pump (18) is arranged in the ventilation spherical shell (2); the surface of the ventilation spherical shell (2) is provided with a plurality of through holes (16), and the through holes (16) are coated with a dust removal net (17); the bottom of the ventilation spherical shell (2) is provided with a base (19), an air pump (18) is fixedly arranged in the ventilation spherical shell (2), the air pump (18) is fixed on the upper surface of the base (19), an air pipe (20) penetrates through the base (19) to be connected with the air pump (18), and the upper end of the hollow connecting rod (7) is fixedly connected with the base (19); the outer side of the ventilation spherical shell (2) is fixedly connected with the floating ring (4) through a plurality of support rods (5).
2. The piezoelectric catalysis based water pollutant degradation and aeration integrated device is characterized in that the aeration device body (1) is a hollow cavity, the stirring head (11) and the driving rod (12) are positioned in the hollow cavity, a water permeable window is formed in the side wall of the aeration device body (1), and a filter screen (6) is mounted at the water permeable window; the inner side wall of the aeration device main body (1) is fixedly provided with an inserting groove (10), a piezoelectric film (24) is fixedly arranged on the inner side wall of the aeration device main body (1) through the inserting groove (10), the piezoelectric film (24) is in a rectangular belt shape, and the piezoelectric film (24) can vibrate along with the impact of water flow; the piezoelectric film (24) is vertically arranged, the length direction of the piezoelectric film (24) is the same as that of the aeration device main body (1), and the plane of the piezoelectric film (24) is vertical to the inner side wall of the aeration device main body (1); the piezoelectric film (24) is loaded with piezoelectric material.
3. The piezoelectric catalysis based water pollutant degradation and aeration integrated device as claimed in claim 1 or 2, characterized in that the preparation method of the piezoelectric film (24) comprises the following steps:
1. pouring sodium molybdate and thioacetamide in a mass ratio of 1;
2. cleaning the obtained molybdenum disulfide powder in deionized water and absolute ethyl alcohol, drying and collecting for later use;
3. adding a certain amount of polyvinylidene fluoride into triethyl phosphate, continuously stirring for 1-2 hours, and then adding a certain amount of molybdenum disulfide powder to form a suspension;
4. spin-coating the obtained suspension on a rectangular glass slide by using a spin coater, and standing in deionized water to realize material curing;
5. and finally, placing the rectangular glass slide in air for drying to obtain the rectangular strip-shaped piezoelectric film.
4. The piezoelectric catalysis based water body pollutant degradation and aeration integrated device is characterized in that the lower end of the aeration device body (1) is provided with a lower opening, a lower movable bearing (31) is arranged at the center of the lower opening of the aeration device body (1), the lower end of the driving rod (12) penetrates through the lower movable bearing (31) to be connected with the magnetic resistance rotation stabilizing device (13), and the inner ring of the lower movable bearing (31) is fixedly connected with the side wall of the driving rod (12); the magnetic resistance rotation stabilizing device (13) comprises a rotation stabilizing device shell (32), a rotation stabilizing device inner cavity (33), a spherical magnet (34) and a magnetic plate (35); the upper opening of the rotation stabilizing device shell (32) is butted with the lower opening of the aeration device main body (1), the edge of the upper opening of the rotation stabilizing device shell (32) is fixedly connected with the outer ring of the lower movable bearing (31), the inner part of the rotation stabilizing device shell (32) forms a rotation stabilizing device inner cavity (33), a spherical magnet (34) is positioned in the rotation stabilizing device inner cavity (33), the spherical magnet (34) is fixedly connected with the lower end of the driving rod (12), a magnetic plate (35) is positioned on the inner side wall of the rotation stabilizing device shell (32), the magnetic plate (35) surrounds the periphery of the spherical magnet (34), a gap is reserved between the magnetic plate (35) and the spherical magnet (34), and the magnetic plate (35) and the spherical magnet (34) are oppositely arranged at the same magnetic pole.
5. The integrated water pollutant degradation and aeration device based on piezoelectric catalysis as claimed in claim 1, wherein an upper water-resisting device (36) is mounted on the lower side of the gas transmission transit device (8); the upper waterproof device (36) comprises a hollow smooth cylindrical rod (37), an angular contact ball bearing (38) and a hollow circular table rod (39), the upper end of the driving rod (12) penetrates through the hollow smooth cylindrical rod (37), the angular contact ball bearing (38) and the hollow circular table rod (39), the hollow smooth cylindrical rod (37) is sleeved on the periphery of the driving rod (12) and is tightly connected with the driving rod (12), the angular contact ball bearing (38) is located on the upper side of the hollow smooth cylindrical rod (37), the driving rod (12) penetrates through the inner ring of the angular contact ball bearing (38), the upper end edge of the hollow smooth cylindrical rod (37) is fixedly connected with the inner ring of the angular contact ball bearing (38), the hollow circular table rod (39) is fixedly installed on the upper side of the angular contact ball bearing (38), the lower end aperture of the hollow circular table rod (39) is smaller than the upper end aperture, the lower end aperture edge of the hollow circular table rod (39) is fixedly connected with the outer ring of the angular contact ball bearing (38), and the upper end aperture edge of the hollow circular table rod (39) is fixedly connected with the outer ring of the upper movable bearing (29).
6. The integrated water pollutant degradation and aeration device based on piezoelectric catalysis as claimed in claim 4, wherein the upper side of the magnetic resistance rotation stabilizing device (13) is provided with a lower water-resisting device (36-1); the lower water-resisting device (36-1) comprises a lower hollow smooth cylindrical rod (37-1), a lower corner contact ball bearing (38-1) and a lower hollow circular table rod (39-1); the lower end of a driving rod (12) penetrates through a lower hollow smooth cylindrical rod (37-1), a lower corner contact ball bearing (38-1) and a lower hollow circular table rod (39-1), the lower hollow smooth cylindrical rod (37-1) is sleeved on the periphery of the driving rod (12) and is tightly connected with the driving rod (12), the lower corner contact ball bearing (38-1) is positioned on the lower side of the lower hollow smooth cylindrical rod (37-1), the driving rod (12) penetrates through an inner ring of the lower corner contact ball bearing (38-1), the lower end edge of the lower hollow smooth cylindrical rod (37-1) is fixedly connected with the inner ring of the lower corner contact ball bearing (38-1), the lower hollow circular table rod (39-1) is fixedly installed on the lower side of the lower corner contact ball bearing (38-1), the upper end aperture of the lower hollow circular table rod (39-1) is smaller than the lower end aperture, the upper end aperture edge of the lower hollow circular table rod (39-1) is fixedly connected with the lower corner contact ball bearing (38-1), and the lower end aperture edge of the lower end aperture of the lower circular table rod (39-1) is connected with an outer ring of a movable bearing (31).
7. The integrated piezoelectric catalysis-based water pollutant degradation and aeration device as claimed in claim 4, wherein the aeration device further comprises a lower detachable shell (14), a connecting rod (15); the lower detachable shell (14) is arranged at the lower end of the aeration device main body (1) and covers the periphery of the magnetic resistance stable rotation device (13); the below that shell (14) can be dismantled to the lower part has focus stabilising arrangement (3), the upper end fixed connection of the bottom lower surface of steady rotary device shell (32) and connecting rod (15), the lower extreme of connecting rod (15) passes the casing that shell (14) can be dismantled to the lower part and is connected with focus stabilising arrangement (3), and the inside fixed mounting of focus stabilising arrangement (3) has gravity center ball (21).
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