CN114634242B - Water pollutant degradation aeration integrated device based on piezoelectric catalysis - Google Patents

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

An integrated device for degradation and aeration of water pollutants based on piezoelectric catalysis

technical field

The invention relates to an integrated device for degrading and aerating water body pollutants based on piezoelectric catalysis, and belongs to the field of water pollution control.

Background technique

Various pollutants enter the environmental water body through various channels, eventually causing water pollution, which in turn affects the surrounding ecology and leads to environmental deterioration; therefore, the protection of water bodies, especially water pollution control, has a positive impact on environmental protection. Aeration technology is the key to governance. An important part of water pollution.

The process of forcibly transferring oxygen from the air to a liquid to obtain sufficient dissolved oxygen is called aeration. Under natural conditions, it is difficult to quickly replenish dissolved oxygen in water bodies such as rivers. If they are in anoxic or anaerobic state for a long time, the water quality will easily deteriorate. At the same time, the sewage and wastewater generated by human activities need to be treated by sewage treatment plants before entering the environmental water body. In this process, it is necessary to go through the activated sludge aerobic section with high dissolved oxygen content to improve the water quality; the quality of natural water bodies and sewage treatment plant effluent water is closely related to the concentration of dissolved oxygen in the water, and the most direct way to increase the concentration of dissolved oxygen in water is It is aeration; at present, compared with other biological and chemical oxygenation technologies, aeration technology has the advantages of process control, strong oxygenation capacity, and small footprint, and can be divided into mechanical aeration, ultra-microporous aeration, push flow Aeration, solar aeration and other types are widely used in various types of waterworks, sewage treatment plants, rivers, lakes, etc., while increasing the concentration of dissolved oxygen in water, it increases the contact between organic matter and microorganisms in water, especially aerobic microorganisms, so that Under the condition of sufficient dissolved oxygen, microorganisms can better oxidize and decompose organic matter in water.

At present, it is a commonly used method to control water body pollution by using aeration device for aeration; however, the existing aeration device has the following problems during use, one: part of the aeration device is submerged in the water body for a long time, It is easy to pour water into the internal equipment and cause damage to the internal equipment; second: the traditional aeration device cannot effectively prevent the sundries in the water body from entering the air pipe, which affects the gas delivery and reduces the aeration efficiency of the aeration device; third: the current Some aeration devices have not yet achieved the ability to effectively degrade pollutants in water; considering the actual use, an aeration device that combines aeration technology and piezoelectric catalytic technology is invented, which can avoid the above problems while achieving water pollution. Efficient degradation of pollutants.

Piezoelectric catalytic technology is a new type of catalytic technology with development potential. Different from traditional photocatalysis and electrocatalysis, piezoelectric catalysis can realize the conversion of mechanical energy to electrical energy. During this process, oxidation-reduction reactions occur on the surface of the catalyst to realize Removal of pollutants; piezoelectric catalysis energy sources can come from various vibrations, water flow, wind, etc.; therefore, the combination of piezoelectric catalysis technology and aeration technology to achieve efficient removal of pollutants in water while aerating has a huge application potential.

Contents of the invention

The present invention proposes an integrated device for degrading and aerating water body pollutants based on piezoelectric catalysis, and its purpose is to achieve the purpose of removing pollutants in water while aerating by combining piezoelectric catalysis technology with aeration technology .

Technical solution of the present invention: an integrated device for degradation and aeration of water body pollutants based on piezoelectric catalysis, the structure of which includes an aeration device and a piezoelectric film 24; the aeration device includes an aeration device main body 1, a stirring head 11. The driving rod 12, the stirring head 11, and the driving rod 12 are located inside the main body of the aeration device 1. The inside of the driving rod 12 is hollow, and the outer surface of the driving rod 12 is equipped with the stirring head 11. There is a ventilation hole 23 at one end, and the inside of the stirring head 11 communicates with the inside of the driving rod 12 through the ventilation hole 23. The other end of the stirring head 11 has several strip-shaped air holes 22, and the piezoelectric film 24 is distributed around the stirring head 11.

Further, the main body 1 of the aeration device is a hollow cavity, the stirring head 11 and the driving rod 12 are located inside the hollow cavity, the side wall of the main body 1 of the aeration device is provided with a water-permeable window, and a filter is installed at the water-permeable window. Net 6; slot 10 is fixedly installed on the inner side wall of the main body 1 of the aeration device, and the piezoelectric film 24 is fixedly installed on the inner side wall of the main body 1 of the aeration device through the slot 10, and the piezoelectric film 24 It is in the shape of a rectangular strip, and the piezoelectric film 24 can vibrate with the impact of the water flow; the piezoelectric film 24 is placed vertically, and the length direction of the piezoelectric film 24 is the same as that of the main body 1 of the aeration device. The plane where 24 is located is perpendicular to the inner side wall of the main body 1 of the aeration device; the piezoelectric film 24 is loaded with a piezoelectric material.

Further, the preparation method of the piezoelectric film 24 includes as follows:

1. Pour sodium molybdate and thioacetamide with a mass ratio of 1:2 into the container until stirred evenly to form a mixed solution, and then transfer the mixed solution to a polytetrafluoroethylene-lined stainless steel reaction kettle. Keep for a certain period of time to obtain molybdenum disulfide powder;

2. Wash the obtained molybdenum disulfide powder in deionized water and absolute ethanol, dry and collect for later use;

3. Add a certain amount of polyvinylidene fluoride (PVDF) into triethyl phosphate, keep stirring for 1 to 2 hours, and then add a certain amount of molybdenum disulfide powder to form a suspension;

4. Spin-coat the obtained suspension on a rectangular glass slide with a spin coater, and let it stand in deionized water to solidify the material;

5. Finally, place the rectangular glass slide in the air to dry to obtain a rectangular strip-shaped piezoelectric film.

Further, the aeration device also includes an upper detachable shell 9 and an air delivery pipe 20; There is a gas transmission transfer device 8 in the enclosed space, and the lower end of the gas transfer pipe 20 communicates with the gas transfer transfer device 8. A drive motor 26 is installed in the gas transfer transfer device 8, and the power output shaft of the drive motor 26 is connected to the upper end of the drive rod 12. connection; the upper end of the main body 1 of the aeration device has an upper opening, the center of the upper opening of the main body 1 of the aeration device has an upper movable bearing 29, and the upper end of the driving rod 12 passes through the inner ring of the upper movable bearing 29 and enters the transmission The gas transfer device 8, the inner ring of the upper movable bearing 29 is fixedly connected with the side wall of the drive rod 12; the gas transmission transfer device 8 includes a gas transmission chamber shell 25, and a drive motor 26 is fixedly installed inside the cavity of the gas transmission chamber shell 25 .

Further, there is a hollow connecting rod 7 on the outside of the air delivery pipe 20, the hollow connecting rod 7 is sleeved on the outside of the air delivery pipe 20, the air delivery pipe 20 passes through the hollow connecting rod 7, and the lower end of the hollow connecting rod 7 is connected to the air delivery chamber. The upper surface of the top of the shell 25 is fixedly connected, and the lower end of the gas delivery pipe 20 communicates with the inside of the cavity of the gas delivery cavity shell 25; the power output shaft of the drive motor 26 is connected with the upper end of the drive rod 12 through a rolling bearing 28; the drive rod The upper end of 12 passes through the inner ring of the upper movable bearing 29 and is connected with the inner ring of the rolling bearing 28, and the power output shaft of the driving motor 26 is also connected with the inner ring of the rolling bearing 28, and the power output shaft of the driving motor 26 is in a straight line with the driving rod 12 , the outer ring of the rolling bearing 28 is fixed inside the cavity of the air transmission chamber shell 25 through the support frame 27, the rolling bearing 28 is located below the driving motor 26; the rolling bearing 28 is located above the upper movable bearing 29, and the driving rod 12 is located at the upper movable bearing 29 and the rolling bearing 28 are provided with a number of gas transmission holes 30 on the part of the side wall; the bottom of the gas transmission cavity shell 25 is inclined to be funnel-shaped, and 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 chamber shell 25 is docked with the main body of the aeration device 1, the edge of the lower opening of the gas transmission chamber shell 25 is fixedly connected with the outer ring of the upper movable bearing 29, and the gas transfer space is formed inside the cavity of the gas transmission chamber shell 25 ; The height of the position of the air delivery hole 30 on the drive rod 12 is equivalent to the height of the position of the inclined plane at the bottom of the air delivery chamber shell 25 .

Further, the aeration device also includes a ventilating ball shell 2, several support rods 5, and a floating ring 4; the ventilating ball shell 2 is located above the upper detachable shell 9, and an air pump 18 is installed inside the ventilating ball shell 2; The surface of the balloon shell 2 is provided with several through holes 16, and the through holes 16 are coated with a dust removal net 17; the bottom of the ventilating ball shell 2 has a base 19, and the inside of the ventilating shell 2 is fixedly installed with an air pump 18, and the air pump 18 is fixed. On the upper surface of the base 19, the air delivery pipe 20 passes through the base 19 and is connected to the air pump 18, and the upper end of the hollow connecting rod 7 is fixedly connected to the base 19; .

Further, the lower end of the main body of the aeration device 1 has a lower opening, and the center of the lower opening of the main body of the aeration device 1 has a lower movable bearing 31, and the lower end of the driving rod 12 passes through the lower movable bearing 31 and rotates with the magnetic resistance. The device 13 is connected, and the inner ring of the lower movable bearing 31 is fixedly connected with the side wall of the drive rod 12; the magnetic anti-rotation stabilization device 13 includes a rotation stabilization device housing 32, a rotation stabilization device inner cavity 33, a spherical magnet 34, and a magnetic plate 35 The upper opening of the stable rotation device housing 32 is docked with the lower opening of the aeration device main body 1, the upper opening edge of the stable rotation device housing 32 is fixedly connected with the outer ring of the lower movable bearing 31, and the inside of the stabilization device housing 32 forms The inner cavity 33 of the stabilizing device, the spherical magnet 34 is located in the inner cavity 33 of the stabilizing device, the spherical magnet 34 is fixedly connected with the lower end of the drive rod 12, the magnetic plate 35 is located on the inner side wall of the outer shell 32 of the stabilizing device, and the magnetic plate 35 is surrounded by Around the spherical magnet 34, there is a gap between the magnetic plate 35 and the spherical magnet 34, and the same magnetic pole is oppositely placed between the magnetic plate 35 and the spherical magnet 34.

Further, an upper water barrier 36 is installed on the lower side of the gas transmission transfer device 8; the upper water barrier 36 includes a hollow smooth cylindrical rod 37, an angular contact ball bearing 38, a hollow round table rod 39, and the drive rod 12 The upper end passes through the hollow smooth cylindrical rod 37, the angular contact ball bearing 38, and the hollow round table rod 39. The hollow smooth cylindrical rod 37 is sleeved on the periphery of the driving rod 12 and is closely connected with the driving rod 12. The angular contact ball bearing 38 is located on the hollow smooth cylindrical rod. On the upper side of 37, the drive rod 12 passes through the inner ring of the angular contact ball bearing 38, the upper edge of the hollow smooth cylindrical rod 37 is fixedly connected with the inner ring of the angular contact ball bearing 38, and the hollow round table rod 39 is fixedly installed on the angular contact ball bearing On the upper side of 38, the lower end aperture of the hollow round table rod 39 is less than the upper end aperture, the lower end aperture edge of the hollow round table rod 39 is fixedly connected with the outer ring of the angular contact ball bearing 38, the upper end aperture edge of the hollow round table rod 39 and the upper movable bearing 29 The outer ring is fixedly connected.

Further, a lower water isolation device 36-1 is installed on the upper side of the magnetic anti-spin device 13; the lower water isolation device 36-1 includes a lower hollow smooth cylindrical rod 37-1, a lower angular contact ball bearing 38-1 , the lower hollow round table rod 39-1; the lower end of the driving rod 12 passes through the lower hollow smooth cylindrical rod 37-1, the lower angular contact ball bearing 38-1, the lower hollow round table rod 39-1, and the lower hollow smooth cylindrical rod 37-1 set On the periphery of the driving rod 12 and closely connected with the driving rod 12, the lower angular contact ball bearing 38-1 is located on the lower side of the lower hollow smooth cylindrical rod 37-1, and the driving rod 12 passes through the inner ring of the lower angular 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 angular contact ball bearing 38-1, and the lower hollow round table rod 39-1 is fixedly installed on the lower side of the lower angular contact ball bearing 38-1, and the lower hollow round table rod The upper end aperture of 39-1 is smaller than the lower end aperture, the upper end aperture edge of the lower hollow round table rod 39-1 is fixedly connected with the outer ring of the lower angular contact ball bearing 38-1, and the lower end aperture edge of the lower hollow round table rod 39-1 is connected with the lower movable bearing The outer ring of 31 is fixedly connected.

Further, the aeration device also includes a lower detachable shell 14 and a connecting rod 15; the lower detachable shell 14 is installed on the lower end of the main body 1 of the aeration device and covers the periphery of the magnetic anti-rotation device 13; the lower part The center of gravity stabilizing device 3 is arranged below the detachable shell 14, and the bottom lower surface of the stable rotation device shell 32 is fixedly connected with the upper end of the connecting rod 15, and the lower end of the connecting rod 15 passes through the shell of the lower detachable shell 14 to stabilize the center of gravity. The device 3 is connected, and a center of gravity ball 21 is fixedly installed inside the center of gravity stabilizing device 3 .

Beneficial effects of the present invention:

1) The present invention realizes the technical effect of combining piezoelectric catalysis technology and aeration technology to remove pollutants in water;

2) Through further design, the present invention can better cope with changing water surface conditions by setting a floating ring and a center of gravity stabilizing device, reduce the water surface turbulence during the operation of the present invention, and improve the stability of the present invention during operation. At the same time, Compared with the main body of the aeration device, the floating circle occupies a larger area, which can significantly reduce the risk of device overturning;

3) Through further design, the invention realizes the effective transition of the external gas from the gas transmission pipe to the drive rod through the gas transmission transfer device, avoiding the rotation of the gas transmission pipe and the hollow connecting rod caused by the rotation of the drive rod, and at the same time, after the external gas contacts the drive motor, It can cool down the driving motor to a certain extent, prolonging the service life of the driving motor;

4) Through further design, the present invention designs the driving motor, the driving rod, the stirring head, and the strip-shaped air hole, and drives the driving rod to rotate through the driving motor, and then drives the stirring head to continuously stir in the water, and the strip-shaped air hole at the end of the stirring head will The gas from the outside is evenly and fully mixed in the water to achieve full gas-liquid mixing, thereby improving the aeration efficiency of the device;

5) Through further design, the present invention realizes the stability of the rotation at the bottom of the driving rod by setting the magnetic anti-rotation stabilization device and utilizing the principle of mutual repulsion of magnets of the same polarity, and does not drive the lower connecting rod and center of gravity stabilization device of the magnetic anti-rotation stabilization device exercise;

6) Through further design, the present invention prevents the external water body from entering the gas transmission transfer device and the magnetic anti-rotation device by setting the water isolation device, and through the reasonable connection of the upper water isolation device and the lower water isolation device, extending the internal components of the device such as the drive The service life of the motor and the magnetic anti-stabilization device;

7) Through further design, the present invention utilizes the mechanical force of the fast-flowing water flow by setting the slot and the piezoelectric film, and the oxidation-reduction reaction for pollutants in the water occurs on the surface of the piezoelectric film, so as to realize the aeration of the device at the same time The role of degrading pollutants in water.

Description of drawings

Accompanying drawing 1 is the schematic diagram of the three-dimensional structure of the present invention.

Accompanying drawing 2 is a schematic diagram of the main body and surrounding components of the aeration device of the present invention.

Accompanying drawing 3 is the schematic diagram of ventilating ball shell and surrounding parts of the present invention.

Accompanying drawing 4 is the schematic diagram of center of gravity stabilizing device and surrounding components of the present invention.

Accompanying drawing 5 is the schematic diagram of the stirring head of the present invention.

Accompanying drawing 6 is the schematic diagram of the ventilation hole of the present invention.

Accompanying drawing 7 is the schematic diagram of slot and piezoelectric film of the present invention.

Accompanying drawing 8 is the schematic diagram of the gas transmission transfer device and surrounding components of the present invention.

Accompanying drawing 9 is a schematic diagram of the magnetic anti-stabilization spinner and surrounding components of the present invention.

Accompanying drawing 10 is the schematic diagram of the upper water separation device of the present invention.

In the accompanying drawings, 1 is the main body of the aeration device; 2 is the ventilation shell; 3 is the center of gravity stabilizing device; 4 is the floating ring; 5 is the support rod; 6 is the filter screen; 7 is the hollow connecting rod; 9 is the upper detachable shell; 10 is the slot; 11 is the stirring head; 12 is the driving rod; 13 is the magnetic anti-rotation device; 14 is the lower detachable shell; 15 is the connecting rod; 16 is the through hole; 17 is the dust removal Net; 18 is an air pump; 19 is a base; 20 is an air pipe; 21 is a center of gravity ball; 22 is a strip air hole; 23 is a ventilation hole; 24 is a piezoelectric film; 25 is an air transmission chamber shell; 26 is a drive motor; 27 28 is a rolling bearing; 29 is an upper movable bearing; 30 is an air transmission hole; 31 is a lower movable bearing; 32 is a shell of a stabilizing device; 33 is an inner chamber of a stabilizing device; 34 is a spherical magnet; 35 is a magnetic plate ; 36 is the upper water isolation device; 37 is a hollow smooth cylindrical rod; 38 is an angular contact ball bearing; 39 is a hollow round table rod; 36-1 is a lower water isolation device; 37-1 is a lower hollow smooth cylindrical rod; 38-1 It is a lower angular contact ball bearing; 39-1 is a lower hollow round table rod.

Detailed ways

An integrated device for degradation and aeration of water body pollutants based on piezoelectric catalysis, its structure includes an aeration device, a piezoelectric film 24; the aeration device includes an aeration device main body 1, a stirring head 11, a driving rod 12, and The head 11 and the driving rod 12 are located inside the main body of the aeration device 1. The inside of the driving rod 12 is hollow. The outer surface of the driving rod 12 is equipped with a stirring head 11. The inside of the stirring head 11 is hollow. One end of the stirring head 11 has a ventilation hole 23. Stirring The inside of the head 11 communicates with the inside of the driving rod 12 through the ventilation hole 23 , and the other end of the stirring head 11 has several strip-shaped air holes 22 , and the piezoelectric film 24 is distributed around the stirring head 11 .

The main body 1 of the aeration device is a hollow cavity, the stirring head 11 and the driving rod 12 are located inside the hollow cavity, the side wall of the main body 1 of the aeration device has a water-permeable window, and a filter screen 6 is installed at the water-permeable window When working, water can enter the hollow cavity of the aeration device main body 1 through the water-permeable window, and the filter screen 6 can effectively prevent the sundries in the water from entering the aeration device main body 1, reducing the impact of sundries on the internal components of the aeration device main body 1 The collision improves the service life of relevant components inside the main body 1 of the entire aeration device.

A slot 10 is fixedly installed on the inner side wall of the main body 1 of the aeration device, and a piezoelectric film 24 is fixedly installed on the inner side wall of the main body 1 of the aeration device through the slot 10, and the piezoelectric film 24 is in the shape of a rectangular strip. shape, the piezoelectric film 24 can vibrate with the impact of the water flow; preferably, the piezoelectric film 24 is placed vertically, the length direction of the piezoelectric film 24 is the same as the length direction of the main body 1 of the aeration device, and the piezoelectric film 24 is placed vertically. The plane where 24 is located is perpendicular to the inner side wall of the main body 1 of the aeration device.

The piezoelectric film 24 preparation method comprises as follows:

1. Pour sodium molybdate and thioacetamide with a mass ratio of 1:2 into the container until stirred evenly to form a mixed solution, and then transfer the mixed solution to a polytetrafluoroethylene-lined stainless steel reaction kettle. Keep for a certain time to obtain molybdenum disulfide powder; the certain time is preferably 20 hours to 26 hours, more preferably 24 hours; the certain temperature is preferably 180°C-220°C, more preferably 200°C;

2. Wash the obtained molybdenum disulfide powder in deionized water and absolute ethanol, dry and collect for later use;

3. Add a certain amount of polyvinylidene fluoride (PVDF) into triethyl phosphate, keep stirring for 1 to 2 hours, and then add a certain amount of molybdenum disulfide powder to form a suspension;

4. Spin-coat the obtained suspension on a rectangular glass slide with a spin coater, and let it stand in deionized water to solidify the material;

5. Finally, place the rectangular glass slide in the air to dry to obtain a rectangular strip-shaped piezoelectric film.

The piezoelectric film 24 can also directly select existing piezoelectric films on the market.

A piezoelectric material is loaded on the piezoelectric film 24, and the piezoelectric material is preferably molybdenum disulfide.

The aeration device also includes an upper detachable shell 9 and an air delivery pipe 20; the upper detachable shell 9 is buckled upside down on the upper end of the aeration device main body 1, and the upper end of the upper detachable shell 9 and the aeration device main body 1 is surrounded by There is a gas transfer transfer device 8 in the space, the lower end of the gas transfer pipe 20 communicates with the gas transfer transfer device 8, a drive motor 26 is installed in the gas transfer transfer device 8, and the power output shaft of the drive motor 26 is connected to the upper end of the drive rod 12; The upper detachable shell 9 can be disassembled after the aeration device finishes working, so that relevant personnel can clean the interior of the aeration device main body 1 or replace related components.

The main body 1 of the aeration device is cylindrical, and the upper detachable shell 9 is installed on the upper end of the main body 1 of the cylindrical aeration device.

The upper end of the main body 1 of the aeration device has an upper opening, and an upper movable bearing 29 is located at the center of the upper opening of the main body 1 of the aeration device. In the device 8, the inner ring of the upper movable bearing 29 is fixedly connected with the side wall of the drive rod 12.

The gas transmission transfer device 8 includes a gas transmission chamber shell 25, a drive motor 26, and a support frame 27; the support frame 27 is fixedly installed on the inner wall of the upper side of the gas transmission cavity shell 25, and the interior of the gas transmission cavity shell 25 is fixedly installed The drive motor 26; the support frame 27 is preferably a tripod support frame.

There is a hollow connecting rod 7 on the outside of the air delivery pipe 20, and the hollow connecting rod 7 is set on the outside of the air delivery pipe 20. The upper surface of the top is fixedly connected, and the lower end of the air delivery pipe 20 communicates with the cavity inside of the air delivery chamber shell 25 .

The power output shaft of the drive motor 26 is connected with the upper end of the drive rod 12 through a rolling bearing 28; , the power output shaft of the driving motor 26 is on a straight line with the driving rod 12, and the outer ring of the rolling bearing 28 is fixed in the cavity inside of the air transmission cavity shell 25 by the support frame 27, and the rolling bearing 28 is positioned at the below of the driving motor 26.

The upper end of the drive rod 12 is connected to the inner ring of the rolling bearing 28 through the inner ring of the upper movable bearing 29; A number of air delivery holes 30 with larger diameters are opened on the side wall; the preferred diameter of the air delivery holes 30 with larger diameters ranges from 1.0 cm to 1.5 cm.

The bottom of the air transmission chamber shell 25 is inclined to be funnel-shaped, the lower opening of the air transmission chamber shell 25 is located in the middle of the bottom of the air transmission chamber shell 25, the lower opening of the air transmission chamber shell 25 is docked with the main body 1 of the aeration device, and the air transmission The edge of the lower opening of the cavity shell 25 is fixedly connected with the outer ring of the upper movable bearing 29, and the gas transfer space is formed inside the cavity of the gas transmission cavity shell 25; The inclined plane at the bottom of the shell 25 is located at the same height; when working, the outside gas enters the gas transfer space inside the gas delivery chamber shell 25 through the gas delivery pipe 20, and then enters the drive rod 12 through the gas delivery hole 30 on the drive rod 12 Inside, the external gas is transmitted to the stirring head 11 through the drive rod 12 for aeration; the external gas forms a transfer flow in the gas transfer space inside the gas transmission chamber shell 25, and the gas flows with the gas transmission chamber shell 25 inside. The direct contact of the drive motor 26 can effectively cool down the drive motor 26 when it is working in the gas transmission cavity shell 25, prolonging the service life of the drive motor 26; at the same time, the gas enters the drive rod 12 from the gas transmission hole 30 and flows along the drive rod 12. Move to each stirring head 11; the use of two kinds of bearings, rolling bearing 28 and upper movable bearing 29, realizes that the driving rod 12 can rotate effectively, and realizes the fixing of the upper end of the driving rod 12; After being stored in the gas transfer space, it automatically enters the drive rod 12 from the gas delivery hole 30, which realizes the technical effect that the gas can smoothly enter the drive rod 12 when the drive rod 12 rotates, and ensures that the hollow connecting rod 7, Components such as the air pipe 20, the ventilating ball shell 2, some support rods 5, and the floating ring 4 are not rotated, which improves the stability of the entire device during operation.

The aeration device also includes a ventilating ball shell 2, several support rods 5, and a floating ring 4; the ventilating ball shell 2 is located above the upper detachable shell 9, and an air pump 18 is housed inside the ventilating ball shell 2; the ventilating ball shell 2 There are several through holes 16 on the surface, and the through holes 16 are covered with dust net 17; the bottom of the ventilating ball shell 2 has a base 19, and the inside of the ventilating ball shell 2 is fixedly installed with an air pump 18, and the air pump 18 is fixed on the base 19 The upper surface of the air pipe 20 passes through the base 19 and is connected to the air pump 18, and the upper end of the hollow connecting rod 7 is fixedly connected to the base 19;

The outside of the ventilating spherical shell 2 is fixedly connected to the floating ring 4 through several support rods 5; the floating ring 4 ensures that the through hole 16 on the surface of the ventilating spherical shell 2 is always above the surface of the water body, preventing water from entering the device through the through hole 16 .

The ventilating ball shell 2 adopts an inclined upper surface, and the through hole 16 is covered with a dust removal net 17, which can prevent external dust from entering the ventilating ball shell 2 and causing blockage to the air pump 18, thereby ensuring the long-term use of the equipment; The gas enters the inside of the ventilating ball shell 2 through the through hole 16 on the surface of the ventilating ball shell 2, and then is injected into the air delivery pipe 20 through the air pump 18, and the oxygen supply per unit time can be significantly increased by the air pump 18; the inside of the floating ring 4 is filled with The air is connected to the ventilating spherical shell 2 through the support rod 5, which can effectively prevent the water surface from turbulent and play the role of stably supporting the aeration device; The contact area between the ventilation spherical shell 2 and the outside air adopts an inclined upper surface of the spherical shell to reduce the accumulation of water on the surface of the through hole.

The lower end of the main body of the aeration device 1 has a lower opening, and the center of the lower opening of the main body of the aeration device 1 has a lower movable bearing 31, and the lower end of the driving rod 12 passes through the lower movable bearing 31 and is connected to the magnetic anti-spin device 13 , the inner ring of the lower movable bearing 31 is fixedly connected with the side wall of the drive 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 anti-rotation stabilization device 13 includes a rotation stabilization device housing 32, a rotation stabilization device inner cavity 33, a spherical magnet 34, and a magnetic plate 35; the upper opening of the rotation stabilization device housing 32 is docked with the lower opening of the aeration device main body 1 , the upper opening edge of the stabilizing device housing 32 is fixedly connected with the outer ring of the lower movable bearing 31, the inside of the stabilizing device housing 32 forms a stabilizing device inner cavity 33, and the spherical magnet 34 is located in the stabilizing device inner cavity 33, and the spherical magnet 34 is fixedly connected with the lower end of the drive rod 12, and the magnetic plate 35 is positioned on the inner wall of the stabilizer housing 32, and the magnetic plate 35 surrounds the spherical magnet 34, there is a gap between the magnetic plate 35 and the spherical magnet 34, and the magnetic plate 35 It is placed opposite to the spherical magnet 34 with the same magnetic pole; when working, the drive rod 12 rotates in the inner cavity 33 of the spin stabilization device through the lower movable bearing 31, and the spherical magnet 34 fixedly installed at the lower end of the drive rod 12 is connected to the shell 32 of the spin stabilization device The internal magnetic plate 35 repels due to the phenomenon of "homopolar magnetic fields repel each other". When the spherical magnet 34 is under a stable force, it can realize the stable rotation of the driving rod 12 in the magnetic anti-spin device 13, and can prevent the driving rod 12 from driving Components such as the connecting rod 15 and the center of gravity stabilizing device 3 rotate, which improves the stability of the device operation.

The lower side of the gas transmission transfer device 8 is equipped with an upper water isolation device 36; the water isolation device 36 includes a hollow smooth cylindrical rod 37, an angular contact ball bearing 38, a hollow round platform rod 39, and the upper end of the driving rod 12 passes through the hollow Smooth cylindrical rod 37, angular contact ball bearing 38, hollow round table rod 39, hollow smooth cylindrical rod 37 is sleeved on the periphery of drive rod 12 and is closely connected with drive rod 12, angular contact ball bearing 38 is located on the upper side of hollow smooth cylindrical rod 37 , the driving rod 12 passes through the inner ring of the angular contact ball bearing 38, the upper 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, and the hollow round table rod 39 is fixedly installed on the corner The upper side of the contact ball bearing 38, the lower end aperture of the hollow round table rod 39 is smaller than the upper end aperture, the lower end aperture edge of the hollow round table rod 39 is fixedly connected with the outer ring of the angular contact ball bearing 38, the upper end aperture edge of the hollow round table rod 39 is movable with the upper The outer ring of the bearing 29 is fixedly connected; when the driving rod 12 rotates, it drives the hollow smooth cylindrical rod 37 to rotate. Due to the use of the angular contact ball bearing 38, the rotation of the hollow smooth cylindrical rod 37 does not drive the rotation of the hollow round table rod 39, and thus does not affect In the normal working state of the gas transfer device 8, the hollow smooth cylindrical rod 37 is closely connected with the driving rod 12, which can prevent external water from entering the gas transfer device 8 and prolong the service life of the internal components of the device.

A lower water barrier 36-1 is installed on the upper side of the magnetic anti-spin device 13; the lower water barrier 36-1 includes a lower hollow smooth cylindrical rod 37-1, a lower angular contact ball bearing 38-1, a lower hollow Round platform rod 39-1; the lower hollow smooth cylindrical rod 37-1 in the lower water isolation device 36-1, the lower angular contact ball bearing 38-1, the lower hollow round platform rod 39-1 and the hollow smooth cylindrical rod in the water isolation device 36 Cylindrical rod 37, angular contact ball bearing 38, hollow round table rod 39 are the same parts; the lower end of driving rod 12 passes through lower hollow smooth cylindrical rod 37-1, lower angular contact ball bearing 38-1, lower hollow round table rod 39-1 , the lower hollow smooth cylindrical rod 37-1 is set on the periphery of the driving rod 12 and is tightly connected with the driving rod 12, the lower angular contact ball bearing 38-1 is located on the lower side of the lower hollow smooth cylindrical rod 37-1, and the driving rod 12 passes through the lower corner The inner ring of the contact ball bearing 38-1, the lower end edge of the lower hollow smooth cylindrical rod 37-1 is close to the lower angular contact ball bearing 38-1 and is fixedly connected with the inner ring of the lower angular contact ball bearing 38-1, and the lower hollow round table rod 39- 1 is fixedly installed on the lower side of the lower angular contact ball bearing 38-1, the upper end aperture of the lower hollow round table rod 39-1 is smaller than the lower end aperture, and the upper end aperture edge of the lower hollow round table rod 39-1 is in contact with the outer edge of the lower angular contact ball bearing 38-1. The ring is fixedly connected, and the lower end aperture edge of the lower hollow round table rod 39-1 is fixedly connected with the outer ring of the lower movable bearing 31; 1, the rotation of the lower hollow smooth cylindrical rod 37-1 will not drive the rotation of the lower hollow round table rod 39-1, thereby not affecting the normal working state of the magnetic anti-rotation stabilization device 13, while the lower hollow smooth cylindrical rod 37-1 is closely connected with the drive rod 12, which can prevent external water from entering the magnetic anti-spin device 13, and prolong the service life of the internal components of the device.

The aeration device also includes a lower detachable shell 14 and a connecting rod 15; the lower detachable shell 14 is installed on the lower end of the aeration device main body 1 and covers the periphery of the magnetic anti-spin device 13; the lower detachable shell 14 can avoid the impact of external water body on the magnetic anti-spin device 13, and the lower detachable shell 14 can be disassembled after the aeration device finishes working, so that relevant personnel can easily clean the inside of the aeration device main body 1 or replace related components.

The center of gravity stabilizing device 3 is arranged below the detachable shell 14 of the lower part, the bottom lower surface of the shell 32 of the stabilizing device is fixedly connected with the upper end of the connecting rod 15, and the lower end of the connecting rod 15 passes through the shell of the detachable lower shell 14 Connect with center of gravity stabilizing device 3, center of gravity stabilizing device 3 is fixedly installed with center of gravity ball 21, the size of described center of gravity ball 21 can be changed according to actual water level situation; The rotation of the driving rod 12 can be realized without affecting the stability of other components, and the setting of the center of gravity ball 21 further improves the stability of the device in the water body.

When the present invention works, the sewage enters the inside of the aeration device main body 1 through the filter screen 6 on the outside of the aeration device main body 1, and then starts the air pump 18, and the outside air enters the inside of the aeration ball shell 2 through the through hole 16 on the surface of the aeration ball shell 2, and then Inject the air into the gas delivery pipe 20 through the air pump 18, and the outside air enters the gas transfer space inside the gas delivery cavity shell 25 through the gas delivery tube 20, and then enters the inside of the drive rod 12 through the gas delivery hole 30 on the drive rod 12, and the air is transferred through the drive rod 12. The external air is transmitted to the stirring head 11 for aeration; the driving motor 26 is used to drive the driving rod 12 to rotate, and then the stirring head 11 is continuously stirred in the water, and the gas is ejected from the strip-shaped pores 22 of the stirring head 11 to form aeration, and the gas passes through Stirring and mixing improves the aeration efficiency of the device; the high-speed rotation of the stirring head 11 fully mixes the gas with the water body, fully contacts the oxygen with the polluted water body, realizes the full mixing of gas and liquid, and improves the aeration efficiency of the device; at the same time, the stirring head 11 Rapid rotation causes the speed of water flow in the main body 1 of the aeration device to increase, and the dissolved oxygen content in the water increases. The piezoelectric film 24 fixed by the slot 10 around the inner wall of the main body 1 of the aeration device vibrates when the water flow hits the inner wall of the main body 1 of the aeration device. The film 24 collides with each other, so that the piezoelectric material on the piezoelectric film 24 obtains energy, and stimulates the oxidation-reduction reaction on the surface of the piezoelectric material, and finally realizes the degradation of pollutants in the water body; the external air is preferably directly used outside air, and the external gas can also be used Use a dedicated oxygen supply.

Claims (7)

1. An integrated device for degradation and aeration of water body pollutants based on piezoelectric catalysis, characterized in that it includes an aeration device and a piezoelectric film (24); the aeration device includes an aeration device main body (1), a stirring head (11), the driving rod (12), the stirring head (11), and the driving rod (12) are located inside the main body (1) of the aeration device, the inside of the driving rod (12) is hollow, and the outer surface of the driving rod (12) is equipped with a stirring The head (11), the inside of the stirring head (11) is hollow, and one end of the stirring head (11) has a ventilation hole (23), and the inside of the stirring head (11) communicates with the inside of the drive rod (12) through the ventilation hole (23) , the other end of the stirring head (11) has several strip-shaped pores (22), and the piezoelectric film (24) is distributed around the stirring head (11); The aeration device also includes an upper detachable shell (9) and an air delivery pipe (20); the upper detachable shell (9) is buckled upside down on the upper end of the main body (1) of the aeration device, and the upper detachable shell (9) is connected with the aerator There is a gas transmission transfer device (8) in the space surrounded by the upper end of the gas device main body (1), and the lower end of the gas transmission pipe (20) communicates with the gas transfer device (8). The drive motor (26), the power output shaft of the drive motor (26) is connected to the upper end of the drive rod (12); the upper end of the aeration device main body (1) has an upper opening, and the upper opening of the aeration device main body (1) There is an upper movable bearing (29) at the center, and the upper end of the drive rod (12) enters the gas transmission transfer device (8) after passing through the inner ring of the upper movable bearing (29), and the inner ring of the upper movable bearing (29) and The side wall of the driving rod (12) is fixedly connected; the gas transmission transfer device (8) includes a gas transmission chamber shell (25), and a drive motor (26) is fixedly installed inside the cavity of the gas transmission chamber shell (25); There is a hollow connecting rod (7) on the outside of the air delivery pipe (20), and the hollow connecting rod (7) is sleeved on the outside of the air delivery pipe (20), and the air delivery pipe (20) passes through the hollow connecting rod (7). The lower end of the connecting rod (7) is fixedly connected to the upper surface of the air transmission chamber shell (25), and the lower end of the air transmission pipe (20) communicates with the interior of the air transmission chamber shell (25); the drive motor (26) The power output shaft is connected to the upper end of the drive rod (12) through a rolling bearing (28); the upper end of the drive rod (12) passes through the inner ring of the upper movable bearing (29) and is connected to the inner ring of the rolling bearing (28), and the drive motor The power output shaft of (26) is also connected with the inner ring of the rolling bearing (28), the power output shaft of the driving motor (26) is in a straight line with the drive rod (12), and the outer ring of the rolling bearing (28) passes through the support frame (27 ) is fixed inside the cavity of the air transmission chamber shell (25), the rolling bearing (28) is located below the drive motor (26); the rolling bearing (28) is located above the upper movable bearing (29), and the drive rod (12) is located A number of gas transmission holes (30) are opened on the part of the side wall between the upper movable bearing (29) and the rolling bearing (28); The lower opening of the air transmission chamber shell (25) is located in the middle of the bottom, the lower opening of the air transmission chamber shell (25) is docked with the main body (1) of the aeration device, and the lower opening edge of the air transmission chamber shell (25) is movable The outer ring of the bearing (29) is fixedly connected, and the gas transfer space is formed inside the cavity of the gas delivery chamber (25); the height of the position of the gas delivery hole (30) on the drive rod (12) is the same as 25) The height of the inclined surface at the bottom is equal; The aeration device also includes a ventilation shell (2), a number of support rods (5), and a floating ring (4); the ventilation shell (2) is located above the upper detachable shell (9), and the ventilation shell (2) An air pump (18) is installed inside; several through holes (16) are opened on the surface of the ventilating ball shell (2), and the through holes (16) are covered with a dust removal net (17); the ventilating ball shell (2) ) has a base (19) at the bottom, and the air pump (18) is fixedly installed inside the ventilating ball shell (2), and the air pump (18) is fixed on the upper surface of the base (19), and the air pipe (20) passes through the base (19) and The air pump (18) is connected, and the upper end of the hollow connecting rod (7) is fixedly connected to the base (19); the outer side of the ventilation shell (2) is fixedly connected to the floating ring (4) through several support rods (5). 2. An integrated device for degradation and aeration of water body pollutants based on piezoelectric catalysis according to claim 1, characterized in that the main body (1) of the aeration device is a hollow cavity, and the stirring head (11), The driving rod (12) is located inside the hollow cavity, and a permeable window is opened on the side wall of the main body (1) of the aeration device, and a filter screen (6) is installed at the permeable window; the inside of the main body (1) of the aeration device A slot (10) is fixedly installed on the side wall, and the piezoelectric film (24) is fixedly installed on the inner side wall of the main body (1) of the aeration device through the slot (10), and the piezoelectric film (24) is rectangular Strip shape, the piezoelectric film (24) can vibrate with the impact of the water flow; the piezoelectric film (24) is placed vertically, and the length direction of the piezoelectric film (24) is in line with the length of the main body (1) of the aeration device The directions are the same, and the plane where the piezoelectric film (24) is located is perpendicular to the inner side wall of the main body (1) of the aeration device; the piezoelectric film (24) is loaded with piezoelectric material. 3. An integrated device for degrading and aerating water body pollutants based on piezoelectric catalysis according to claim 1 or 2, characterized in that the preparation method of the piezoelectric film (24) comprises the following: 1. Pour sodium molybdate and thioacetamide with a mass ratio of 1:2 into the container until stirred evenly to form a mixed solution, and then transfer the mixed solution to a polytetrafluoroethylene-lined stainless steel reaction kettle. Keep for a certain period of time to obtain molybdenum disulfide powder; 2. Wash the obtained molybdenum disulfide powder in deionized water and absolute ethanol, dry and collect for later use; 3. Add a certain amount of polyvinylidene fluoride to triethyl phosphate, keep stirring for 1 to 2 hours, and then add a certain amount of molybdenum disulfide powder to form a suspension; 4. Spin-coat the obtained suspension on a rectangular glass slide with a spin coater, and let it stand in deionized water to solidify the material; 5. Finally, place the rectangular glass slide in the air to dry to obtain a rectangular strip-shaped piezoelectric film. 4. An integrated device for degradation and aeration of water body pollutants based on piezoelectric catalysis according to claim 1, characterized in that the lower end of the main body (1) of the aeration device has a lower opening, and the main body (1) of the aeration device ) has a lower movable bearing (31) at the center of the lower opening, the lower end of the drive rod (12) passes through the lower movable bearing (31) and is connected to the magnetic anti-rotation device (13), and the inner part of the lower movable bearing (31) The ring is fixedly connected with the side wall of the drive rod (12); the magnetic anti-rotation stabilization device (13) includes the stabilization device housing (32), the stabilization device inner cavity (33), spherical magnets (34), magnetic plates ( 35); the upper opening of the housing (32) of the stabilization device is docked with the lower opening of the main body (1) of the aeration device, and the edge of the upper opening of the housing (32) of the stabilization device is fixed to the outer ring of the lower movable bearing (31) connection, the inside of the stabilizer housing (32) forms the inner cavity (33) of the stabilizer, the spherical magnet (34) is located in the inner cavity (33) of the stabilizer, the spherical magnet (34) and the lower end of the drive rod (12) Fixedly connected, the magnetic plate (35) is positioned on the inner wall of the stabilizer housing (32), the magnetic plate (35) surrounds the spherical magnet (34), and there is a gap between the magnetic plate (35) and the spherical magnet (34). Gaps, between the magnetic plate (35) and the spherical magnet (34) are oppositely placed with the same magnetic pole. 5. An integrated device for degradation and aeration of water body pollutants based on piezoelectric catalysis according to claim 1, characterized in that an upper water isolation device (36) is installed on the lower side of the gas transmission transfer device (8) The upper water barrier (36) includes a hollow smooth cylindrical rod (37), an angular contact ball bearing (38), a hollow round table rod (39), and the upper end of the driving rod (12) passes through the hollow smooth cylindrical rod (37) , angular contact ball bearing (38), hollow round table rod (39), hollow smooth cylindrical rod (37) sleeved on the periphery of the drive rod (12) and tightly connected with the drive rod (12), the angular contact ball bearing (38) is located The upper side of the hollow smooth cylindrical rod (37), the drive rod (12) passes through the inner ring of the angular contact ball bearing (38), the upper edge of the hollow smooth cylindrical rod (37) and the inner ring of the angular contact ball bearing (38) Fixedly connected, the hollow round table rod (39) is fixedly installed on the upper side of the angular contact ball bearing (38), the lower end aperture of the hollow round table rod (39) is smaller than the upper end aperture, and the lower end aperture edge of the hollow round table rod (39) is in contact with the angular contact ball The outer ring of the bearing (38) is fixedly connected, and the upper end aperture edge of the hollow round table rod (39) is fixedly connected with the outer ring of the upper movable bearing (29). 6. An integrated device for degrading and aerating water body pollutants based on piezoelectric catalysis according to claim 4, characterized in that a lower water isolation device (36) is installed on the upper side of the magnetic anti-spin stabilization device (13) -1); the lower water barrier (36-1) includes a lower hollow smooth cylindrical rod (37-1), a lower angular contact ball bearing (38-1), a lower hollow round table rod (39-1); the drive rod ( 12) The lower end passes through the lower hollow smooth cylindrical rod (37-1), the lower angular contact ball bearing (38-1), the lower hollow round table rod (39-1), and the lower hollow smooth cylindrical rod (37-1) is set on the drive The periphery of the rod (12) is tightly connected with the driving rod (12), the lower angular contact ball bearing (38-1) is located on the lower side of the lower hollow smooth cylindrical rod (37-1), and the driving rod (12) passes through the lower angular contact ball The inner ring of the 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 angular contact ball bearing (38-1), and the lower hollow round rod (39-1) is fixedly installed On the lower side of the lower angular contact ball bearing (38-1), the upper end aperture of the lower hollow round table rod (39-1) is smaller than the lower end aperture, and the upper end aperture edge of the lower hollow round table rod (39-1) is in contact with the lower angular contact ball bearing (38-1). The outer ring of -1) is fixedly connected, and the lower end aperture edge of the lower hollow round table rod (39-1) is fixedly connected with the outer ring of the lower movable bearing (31). 7. An integrated device for degradation and aeration of water body pollutants based on piezoelectric catalysis according to claim 4, characterized in that the aeration device also includes a lower detachable shell (14) and a connecting rod (15); The lower detachable shell (14) is installed on the lower end of the main body (1) of the aeration device and is covered on the periphery of the magnetic anti-rotation stabilization device (13); there is a center of gravity stabilizing device (3 ), the bottom lower surface of the housing (32) of the stabilization device is fixedly connected to the upper end of the connecting rod (15), and the lower end of the connecting rod (15) passes through the shell of the lower detachable housing (14) and the center of gravity stabilizing device ( 3) Connection, center of gravity ball (21) is fixedly installed inside the center of gravity stabilizing device (3).

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