CN106966516B - Curved surface aerator and aeration method - Google Patents
Curved surface aerator and aeration method Download PDFInfo
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- CN106966516B CN106966516B CN201710355313.2A CN201710355313A CN106966516B CN 106966516 B CN106966516 B CN 106966516B CN 201710355313 A CN201710355313 A CN 201710355313A CN 106966516 B CN106966516 B CN 106966516B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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- 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
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses a curved surface aerator and an aeration method. The curved surface aerator comprises a curved surface disc, a rotary cutter arranged below the curved surface disc, and an airflow reduction structure arranged below the rotary cutter; the rotary cutter and the airflow reducing structure are fixedly arranged on a seat body, and the seat body is provided with an air inlet channel; the base body air inlet channel is communicated with the airflow reducing structure and the air channel on the rotary cutter in sequence; the cover is equipped with an air water contact section of thick bamboo on the pedestal, and this air water contact section of thick bamboo is bent and is the annular and upwards extends, the curved surface dish sets up with the air water contact section of thick bamboo relatively, and is equipped with the bubble cutting structure between curved surface dish and air water contact section of thick bamboo, and this bubble cutting structure is used for cutting the bubble that comes out from the rotary-cut ware. The aerator of the invention has the advantages of uniform and stable bubble distribution, proper size and reliable performance.
Description
Technical Field
The invention relates to a curved surface aerator and an aeration method, belonging to the field of sewage and wastewater bottom aeration equipment.
Background
The aerator is a necessary device for water drainage, aeration and oxygenation, and is a sharp tool for improving the activity of aerobic microorganisms in sewage. The quality of the aerator equipment and the operating condition in the sewage treatment directly affect the efficiency and the operating cost of the sewage treatment and even the success or failure of the operation of the whole sewage treatment system.
At present, a common bottom aeration technology adopts a microporous aerator, the microporous aerator utilizes the concept of small hole interception to carry out opening and closing aeration, the size of an opening diaphragm is determined by the opening and closing size of bubbles, the smaller the bubbles in water is, the larger the contact area with water is, the higher the oxygen transfer efficiency is in a unit volume, but the opening is opened and closed for a long time, the fatigue strength of the diaphragm is increased, once any foreign matter exists inside and outside the opening and closing position, the diaphragm is in a tearing state at any time, and therefore the blockage of key components of the aerator and the reliability in air distribution resistance and structure are the main problems in the development of the technical field.
Chinese utility model patent (application number: CN201120043063.7, grant publication number: CN 201932953U) discloses a whirl shearing bubble aerator, this aerator includes the air inlet base, the check valve, gas distributor, the reaction urceolus, reaction inner tube and shearing bubble diffusion dish, the check valve sets up on the air inlet base, one side is connected with the air inlet base, the another side is connected with the reaction urceolus, gas distributor sets up in check valve and reaction urceolus, the bottom is connected with the air inlet base, upper portion is connected with shearing bubble diffusion dish, set up the reaction inner tube between periphery and reaction urceolus, there are first order and second grade whirl step shearing bubble diffusion dish bottom, there is the tooth on first order and the second grade whirl step. This patent has changed the thinking that the aperture was held back, and although in actual engineering operation, the fine solution part of this kind of aerator blocks up, the problem of gas distribution resistance, and the aeration is intermittent type clearance, and the intraductal foreign matter of aeration gets into, and the operation is not very stable.
The Chinese patent application (application number: CN201310581064.0, publication number: CN 10353208A) discloses an aerator, which comprises a mounting base, wherein the middle part of the mounting base is provided with an air inlet cavity, the bottom of the air inlet cavity is provided with an air inlet, the top of the air inlet cavity is provided with an air outlet, the upper part of the air inlet cavity is provided with a cutting assembly, the air outlet is provided with a vibrating diaphragm, the air outlet is fixedly connected with a support frame matched with the lower surface shape of the vibrating diaphragm, the support frame is provided with an exhaust through hole communicated with the air inlet cavity at the position below a sealing part of the vibrating diaphragm, and a positioning part of the vibrating diaphragm is fixedly connected on the support frame. The aerator can better solve the problem that foreign matters enter a pipeline in the existing aerator in a short time, but the rubber vibration diaphragm is aged or saccharified after long-time operation, so that the phenomenon of blockage is easy to occur, and the operation is unstable.
Disclosure of Invention
In order to solve the problem of unreliable long-time use of an aerator in a water plant, the invention aims to provide a curved surface aerator and an aeration method.
In order to achieve the purpose, the invention adopts the technical scheme that:
a curved surface aerator comprises a curved surface disc, a rotary cutter arranged below the curved surface disc, and an airflow reduction structure arranged below the rotary cutter; the rotary cutter and the airflow reducing structure are fixedly arranged on a seat body, and the seat body is provided with an air inlet channel; the base body air inlet channel is communicated with the airflow reducing structure and the air channel on the rotary cutter in sequence; the cover is equipped with an air water contact section of thick bamboo on the pedestal, and this air water contact section of thick bamboo is bent and is the annular and upwards extends, the curved surface dish sets up with the air water contact section of thick bamboo relatively, and is equipped with the bubble cutting structure between curved surface dish and air water contact section of thick bamboo, and this bubble cutting structure is used for cutting the bubble that comes out from the rotary-cut ware.
Therefore, airflow enters the curved surface aerator from the outlet of the aeration branch pipe through the air inlet channel of the base body, enters the gas channel of the rotary cutter after being reduced by the airflow reducing structure, and is subjected to primary gas-liquid-sludge three-phase mixing through rotary cutting of the rotary cutter; the mixed liquid of the primary gas-liquid-mud three-phase mixture is cut by a bubble cutting structure between the curved disc and the gas-water contact cylinder, so that bubbles on the disc surface are fine, distributed uniformly and stably and have proper sizes, and the aeration effect is effectively improved.
According to the embodiment of the invention, the invention can be further optimized, and the following is the technical scheme formed after optimization:
preferably, the gas flow reducing structure is an inverted cup-shaped gland, the gland is inverted on the top of the seat body, and a cover opening of the gland and the edge of the bottom of the cover are provided with gas channels; preferably, an M-shaped airflow channel is formed between the inverted cup-shaped gland and the air inlet channel of the seat body. Therefore, the M-shaped airflow channel can realize multiple U-shaped pressure action on the airflow, so that the airflow reduction effect is improved. The main function of the inverted cup gland is to reduce the airflow.
Preferably, the gas channel at the cover opening is a strip seam and/or the gas channel on the bottom edge of the cover is an umbrella-shaped gas flow channel; preferably, the length and the width of each strip seam are less than or equal to 2mm; preferably, the angle between the umbrella-shaped air flow channel and the inverted cup-shaped gland is 20-40 degrees.
In order to make the distribution of the bubbles more uniform and stable and the sizes more suitable, according to the embodiment of the invention, the bubble cutting structure comprises a tooth-shaped structure arranged at the upper part of the gas-water contact cylinder and a tooth-shaped structure arranged at the lower side surface of the curved disc, and the tooth-shaped structure of the gas-water contact cylinder and the tooth-shaped structure of the curved disc are oppositely arranged; preferably, the bottom of the gas-water contact cylinder is provided with a gas-water through hole for communicating the inner side and the outer side of the curved surface aerator; preferably, the tooth-shaped structures are all triangular bevel teeth; preferably, the triangular bevel teeth are arranged on different concentric circles; more preferably, a hole is formed between the triangular conical teeth on two adjacent concentric circles on the curved surface disc, most preferably, the aperture of the hole is 2mm-4mm, and the distance between two adjacent holes is 10mm-15mm. Therefore, the effect of cutting bubbles by the tooth-shaped structures is optimal. The holes on the curved-surface disc can effectively prevent mud from being accumulated on the disc surface, and the phenomenon that the disc surface has no air bubbles is improved.
Preferably, a plurality of holes are formed in the curved surface disc, the aperture of each hole is 2mm-4mm, and the distance between two adjacent holes is 10mm-15mm.
A check body is arranged in the air inlet channel of the seat body, preferably, the check body is a round ball, and more preferably, the diameter of the round ball is 0.5mm-2mm smaller than the air inlet channel of the seat body. The main function of the non-return body is to make the aerator have a certain airflow channel and the airflow is more uniform.
As a specific connection mode, the curved surface disc, the rotary cutter and the airflow reduction structure are connected in series through a connecting rod; preferably, the connecting rod is respectively in threaded connection with the curved disc, the rotary cutter and the airflow reduction structure.
The curved surface plate is integrally in an inverted umbrella shape. Thus, the bubble diameter is reduced by the inverted umbrella-shaped curved plate, and the bubble is diffused through the circumferential surface of the curved plate.
The rotary cutter is umbrella-shaped, and an inner rotary cutting strip seam is arranged on the umbrella surface of the rotary cutter; preferably, the rotary cutter is an inner hollow trapezoidal round table, and more preferably, the trapezoidal surface of the inner hollow trapezoidal round table is arranged at an angle of 30-45 degrees; preferably, the rotary cutting angle of the internal rotary cutting strip seam is 30-45 degrees; preferably, the length and the width of the internal rotary cutting strip seam are both less than or equal to 2.5mm.
Based on the same invention concept, the invention provides a method for carrying out aeration by using the curved surface aerator, which comprises the following steps:
s1, air flow enters a curved aerator from an outlet of an aeration branch pipe through an air inlet channel of a base body;
s2, reducing the airflow through an airflow reduction structure, entering an air channel of a rotary cutter under the action of multiple U-shaped pressures, and carrying out primary gas-liquid-mud three-phase mixing through rotary cutting of the rotary cutter;
s3, cutting a mixed solution obtained after the primary gas-liquid-mud three-phase mixing through a bubble cutting structure between the curved surface disc and the gas-water contact cylinder to enable bubbles on the disc surface to be fine; when the air is supplied for the first time or intermittently, part of the settled sludge on the rotary cutter is flushed out of the rotary cutter by using an air flow channel of the air flow reduction structure, primary air-liquid-sludge three-phase mixing is carried out or the sludge enters an air-water contact cylinder, and the sludge is discharged out of the aerator by using an air-water through hole of the air-water contact cylinder.
By the structure, the curved surface aerator comprises an inverted umbrella-shaped curved surface disc, an umbrella-shaped rotary cutter, an inverted cup gland, an air-water contact cylinder, a seat body, a check body and the like.
Furthermore, the inverted umbrella-shaped curved surface disc is a symmetrical curved arc inverted umbrella-shaped disc surface, a plurality of triangular bevel teeth are arranged below the disc surface, and the cone angles of the triangular bevel teeth point to the center of the inverted umbrella-shaped curved surface disc. The inverted umbrella-shaped curved plate has the main function of reducing the diameter of bubbles through triangular bevel teeth and diffusing through the circumferential surface of the curved plate.
Further, circular holes of the inverted umbrella-shaped curved surface disc are distributed between the same circular triangular cone, the diameter of each circular hole is 2mm-4mm, and the length between the circular holes is 8mm-15mm; the distance between the adjacent round holes is 10mm-15mm. The main function of the round hole is to prevent the disc surface from accumulating mud and improve the phenomenon that the disc surface has no bubbles.
Further, the umbrella-shaped rotary cutter is an inner hollow trapezoid round table, the angle of the trapezoid surface of the round table is 30-45 degrees, a plurality of inner rotary cutting strip seams are arranged on the trapezoid surface, the rotary cutting angle is 30-45 degrees, and the length and the width of each inner rotary cutting strip seam are less than 2.5mm; the upper part and the lower part of the center of the umbrella-shaped rotary cutter are provided with connecting rods, and the upper connecting rods are provided with external threads which are well meshed with the internal threads in the center of the inverted umbrella-shaped curved surface disc; the lower connecting rod is provided with an external thread which is well meshed with the internal thread in the center of the inverted cup gland; the umbrella surface is provided with an internal rotary cutting strip seam. The main function of the umbrella-shaped rotary cutter is to cut the gas rotational flow into smaller bubbles.
Further, the cover opening of the inverted cup gland is uniformly provided with strip seams, the length and width of each strip seam are less than or equal to 2mm, the edge of the bottom of the cover is provided with an umbrella-shaped airflow channel, and the umbrella-shaped airflow channel and the inverted cup gland are arranged at an angle of 30 degrees. The main function of the inverted cup gland is to reduce the airflow.
Furthermore, the upper part of the air-water contact cylinder is provided with a triangular bevel gear, and the bottom of the air-water contact cylinder is provided with an annular air-water through hole. The main function of the gas-water contact cylinder is to cut the escaped gas, and simultaneously, the gas-water channel at the bottom prevents the sediment from settling.
Furthermore, a gas round tube-shaped channel is arranged in the seat body, a strip seam is arranged at the top of the seat body, the strip seam is less than or equal to 2mm, an air inlet hole is formed in the center of the seat body, and an O-shaped ring groove is formed in the bottom of the seat body; the cylindrical gas channel has the main function of transferring gas in the aeration pipe into the aerator.
The inverted cup gland and the gas circular tube-shaped channel are combined to act, so that the gas flow channel is in a letter M shape; the outer diameter of the gas circular tube-shaped channel is 1-3mm smaller than the inner diameter of the inverted cup gland, so that the gas flow channel is smaller.
Furthermore, the check body is positioned at the bottom of the gas cylindrical passage, and the sphere diameter of the check body is 0.5-2mm smaller than that of the gas cylindrical passage. The main function of the non-return body is to make the aerator have a certain airflow channel and the airflow is more uniform.
Furthermore, the base is provided with internal threads which are well meshed with the umbrella-shaped rotary-cut lower external threads; an arc-shaped groove is arranged in the O-shaped ring groove at the bottom of the gas circular tube-shaped channel in the base. The primary function of the base is to provide a seat.
Compared with the prior art, the invention has the beneficial effects that: the invention has the advantages of uniform and stable bubble distribution, proper size and safe use, and solves the problem of unreliable long-time use of the aerator in the water plant.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is a plan view of the curved disk of FIG. 1;
FIG. 3 is a plan view of the rotary cutter of FIG. 1;
FIG. 4 is a cross-sectional view of the inverted cup gland of FIG. 1;
fig. 5 is a cross-sectional view of the base of fig. 1.
In the figure
1-a curved plate; 11-triangular bevel gear; 12-well; 2-a rotary cutter; 21-a connecting rod; 22-rotary cutting of the strip seam; 3-pouring a cup gland; 31-seam cutting; 32-umbrella-shaped airflow channel; 4-a gas-water contact cylinder; 41-triangular bevel gear; 42-gas water through hole; 5-a seat body; 51-circular channel; 52-strip seam; 53-inlet ports; a 54-O ring groove; 6-non-return body.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
A curved surface aerator structurally comprises an inverted umbrella-shaped curved surface disc 1, an umbrella-shaped rotary cutter 2, an inverted cup gland 3, an air-water contact cylinder 4, a seat body 5, a check body 6 and the like.
The inverted umbrella-shaped curved surface disc 1 is a symmetrical curved arc inverted umbrella-shaped disc surface, a plurality of triangular bevel teeth 11 are arranged below the disc surface, and the cone angle of the triangular bevel teeth 11 points to the disc center of the inverted umbrella-shaped curved surface disc 1; round holes 12 are distributed among the triangular conical teeth 11.
The upper part and the lower part of the center of the umbrella-shaped rotary cutter 2 are provided with connecting rods 21, and the umbrella surface is provided with inner rotary cutting strip seams 22.
The opening of the inverted cup gland 3 is uniformly provided with a strip slit 31, and the edge of the bottom of the gland is provided with an umbrella-shaped airflow channel 32.
The upper part of the gas-water contact cylinder 4 is provided with a triangular bevel gear 41, and the bottom of the gas-water contact cylinder is provided with an annular gas-water through hole 42.
The base body 5 is internally provided with a gas round pipe-shaped channel 51, the top of the base body is provided with a strip seam 52, the center of the base body is provided with an air inlet 53, and the bottom of the base body is provided with an O-shaped ring groove 54.
Said check body 6 is located at the bottom of the gas cylindrical passage 51.
To further illustrate the curved aerator, the structure thereof will be described in detail.
The inverted umbrella-shaped curved surface disc is a symmetrical curved arc inverted umbrella-shaped disc surface, a plurality of triangular bevel teeth are arranged below the disc surface, and the cone angles of the triangular bevel teeth point to the center of the inverted umbrella-shaped curved surface disc. The inverted umbrella-shaped curved plate has the main functions of reducing the diameter of bubbles through triangular bevel teeth and diffusing through the circumferential surface of the curved plate.
Round holes of the inverted umbrella-shaped curved surface disc are distributed between the triangular conical teeth of the same circle, the diameter of each round hole is 2mm-4mm, and the length between the round holes is 8mm-15mm; the distance between the adjacent round holes is 10mm-15mm. The round hole has the main functions of preventing mud from being accumulated on the disk surface and improving the phenomenon that the disk surface has no air bubbles.
The umbrella-shaped rotary cutter is a hollow trapezoid round table, the angle of the trapezoid surface of the round table is 30-45 degrees, a plurality of internal rotary cutting strip seams are arranged on the trapezoid surface, the rotary cutting angle is 30-45 degrees, and the length and the width of the internal rotary cutting strip seams are smaller than 2.5mm. The upper part and the lower part of the center of the umbrella-shaped rotary cutter are provided with connecting rods, and the upper connecting rods are provided with external threads which are well meshed with the internal threads in the center of the inverted umbrella-shaped curved surface disc; the lower connecting rod is provided with an external thread which is well meshed with the internal thread in the center of the inverted cup gland; the umbrella surface is provided with internal rotary cut strip seams. The main function of the umbrella-shaped rotary cutter is to reduce the gas rotational flow into smaller bubbles.
The cover opening of the inverted cup gland is uniformly provided with strip seams, the length and width of each strip seam are less than or equal to 2mm, the edge of the bottom of the cover is provided with an umbrella-shaped airflow channel, and the umbrella-shaped airflow channel and the inverted cup gland are arranged at an angle of 30 degrees. The main function of the inverted cup gland is to attenuate the flow of air.
The upper part of the gas-water contact cylinder is provided with a triangular bevel gear, and the bottom of the gas-water contact cylinder is provided with an annular gas-water through hole. The main function of the gas-water contact cylinder is to cut the escaped gas, and simultaneously, the gas-water channel at the bottom prevents the sediment from settling.
A gas round pipe-shaped channel is arranged in the seat body, a strip seam is arranged at the top of the seat body and is less than or equal to 2mm, an air inlet hole is formed in the center of the seat body, and an O-shaped ring groove is formed in the bottom of the seat body; the cylindrical gas channel has the main function of transferring gas in the aerator pipe into the aerator.
The inverted cup gland and the gas circular tube-shaped channel are combined to act, so that the gas flow channel is in a letter M shape; the outer diameter of the gas circular tube-shaped channel is 1-3mm smaller than the inner diameter of the inverted cup gland, so that the gas flow channel is smaller.
The check body is positioned at the bottom of the gas cylindrical passage, and the spherical diameter of the check body is 0.5-2mm smaller than that of the gas cylindrical passage. The main function of the non-return body is to make the aerator have a certain airflow channel and the airflow is more uniform.
The base is provided with internal threads which are well meshed with the external threads under the umbrella-shaped rotary cutting; an arc-shaped groove is arranged in the O-shaped ring groove at the bottom of the gas circular tube-shaped channel in the base. The primary function of the base is to provide a seat.
The aeration method by using the curved surface aerator comprises the following steps:
the air flow enters the aerator from the outlet of the aeration branch pipe through the air vent at the center of the circular air channel of the base body; the check body on the O-shaped ring at the bottom of the vent hole is pushed by the entering gas, leaves the O-shaped ring and the arc-shaped groove, enters the gas circular channel and the inverted cup gland, and is restored to the original position under the action of gravity when the gas supply is stopped, so that the gas source channel at the inner side of the tube hole is sealed, and the gas flow is cut off; when gas is supplied, gas in the circular gas channel and the inverted cup gland enters the umbrella-shaped rotary cutter through the circular gas channel and the M-shaped slit hole in the inverted cup gland under the action of multiple U-shaped pressures, and then primary gas-liquid-sludge three-phase mixing is carried out through the rotary cutting hole; cutting the mixed solution after primary mixing again by an inverted umbrella-shaped curved plate to enable bubbles to be smaller and the bubbles on the plate surface to be fine; when primary air supply or intermittent air supply is carried out, part of settled mud on the rotary-cut hole is flushed out of the umbrella-shaped rotary cutter by using an inverted umbrella-shaped air flow channel at the bottom of the inverted cup pressing cover, primary air-liquid-mud three-phase mixing is carried out or the mixture enters an air-water contact cylinder, and then the mixture is discharged out of the aerator by using an annular air-water through hole at the bottom of the air-water contact cylinder; when the air supply is stopped, the air circular channel and the air in the M-shaped gap hole formed by the air circular channel and the inverted cup gland form a pressure air cavity, and foreign matters after the air supply is stopped are blocked outside the air cavity by utilizing the reverse action of multiple U-shaped pressures.
The aerator has the advantages of uniform and stable bubble distribution, proper size and safe use when in operation, and solves the problem of unreliable long-time use of the aerator in the water plant.
The foregoing examples are set forth to illustrate the present invention more clearly and are not to be construed as limiting the scope of the invention, which is defined in the appended claims to which the invention pertains, as modified in all equivalent forms, by those skilled in the art after reading the present invention.
Claims (19)
1. The curved surface aerator is characterized by comprising a curved surface disc (1), a rotary cutter (2) arranged below the curved surface disc (1) and an airflow reduction structure arranged below the rotary cutter (2); the rotary cutter (2) and the airflow reducing structure are fixedly arranged on a seat body (5), and the seat body (5) is provided with an air inlet channel; the air inlet channel of the seat body (5) is communicated with the airflow reducing structure and the air channel on the rotary cutter (2) in sequence; the base body (5) is sleeved with an air-water contact cylinder (4), the air-water contact cylinder (4) is bent to extend upwards in an annular shape, the curved surface disc (1) and the air-water contact cylinder (4) are arranged oppositely, a bubble cutting structure is arranged between the curved surface disc (1) and the air-water contact cylinder (4), and the bubble cutting structure is used for cutting bubbles coming out of the rotary cutter (2);
the gas flow reduction structure is an inverted cup-shaped gland (3), the gland (3) is inverted on the top of the seat body (5), and gas channels are arranged at the cover opening of the gland (3) and the cover bottom edge;
the gas channel at the cover opening is a strip seam (31), and the gas channel on the bottom edge of the cover is an umbrella-shaped gas flow channel (32);
the air bubble cutting structure comprises a tooth-shaped structure arranged at the upper part of the air-water contact cylinder (4) and a tooth-shaped structure arranged on the lower side surface of the curved surface disc (1), and the tooth-shaped structure of the air-water contact cylinder (4) and the tooth-shaped structure of the curved surface disc (1) are oppositely arranged; the bottom of the air-water contact cylinder (4) is provided with an air-water through hole which is communicated with the inner side and the outer side of the curved surface aerator;
the rotary cutter (2) is umbrella-shaped, an inner rotary cutting strip seam (22) is arranged on the umbrella surface of the rotary cutter (2), and when air is supplied for the first time or intermittently, partial sludge on the rotary cutter (2) is flushed out of the rotary cutter by utilizing an air flow channel of the air flow reducing structure.
2. The curved aerator of claim 1, wherein the inverted cup-shaped gland (3) and the air inlet channel of the base (5) form an M-shaped air flow channel therebetween.
3. The curved surface aerator of claim 1, wherein the length and width of the slots (31) are less than or equal to 2mm.
4. The curved aerator of claim 1, wherein the umbrella-shaped air flow channel (32) is positioned between 20 ° and 40 ° from the inverted cup-shaped gland.
5. The curved aerator of any one of claims 1-4, wherein the teeth are triangular pyramidal teeth (11, 41).
6. The curved aerator of claim 5, wherein the triangular conical teeth (11, 41) are arranged on different concentric circles.
7. The curved surface aerator as claimed in claim 5, characterized in that holes (12) are provided between the triangular conical teeth (11) on two adjacent concentric circles on the curved surface disc (1).
8. The curved aerator of claim 7, wherein the holes (12) have a diameter of 2mm to 4mm, and the distance between two adjacent holes (12) is 10mm to 15mm.
9. The curved surface aerator as claimed in any one of claims 1-4, wherein the air inlet channel of the base body (5) is provided with a check body (6).
10. The curved aerator of claim 9, wherein the check bodies (6) are round balls.
11. The curved aerator of claim 10, wherein the diameter of the ball is 0.5mm to 2mm smaller than the inlet channel of the housing (5).
12. The curved aerator according to any one of claims 1-4, wherein the curved disc (1) is connected in series with the rotary cutter (2) and the airflow reducing structure through a connecting rod.
13. The curved aerator of claim 12, wherein the connecting rods are threaded to the curved plate (1), the rotary cutter (2), and the air flow reduction structure, respectively.
14. The curved surface aerator as claimed in any one of claims 1-4, wherein the curved surface disc (1) is overall in the shape of an inverted umbrella.
15. The curved aerator as claimed in any one of claims 1-4, wherein the rotary cutter (2) is a hollow trapezoidal circular table.
16. The curved aerator as claimed in claim 15, wherein the trapezoidal surface of the hollow trapezoidal frustum is arranged at an angle of 30 ° to 45 °.
17. The curved aerator of claim 1, wherein the rotary cut angle of the inner cutting slits (22) is between 30 ° and 45 °.
18. The curved surface aerator of claim 1, wherein the length and width of the internal cutting slits (22) are less than or equal to 2.5mm.
19. A method of aeration using the curved aerator of any one of claims 1-18, comprising the steps of:
s1, air flow enters the curved surface aerator from the outlet of the aeration branch pipe through the air inlet channel of the base body (5);
s2, reducing the airflow through an airflow reduction structure, entering an air channel of the rotary cutter (2) under the action of multiple U-shaped pressures, and carrying out rotary cutting through the rotary cutter (2) to carry out primary gas-liquid-mud three-phase mixing;
s3, cutting the mixed liquid obtained after the primary gas-liquid-mud three-phase mixing through a bubble cutting structure between the curved disc and the gas-water contact cylinder (4) to enable bubbles on the disc surface to be fine; when the air is supplied for the first time or intermittently, part of the settled sludge on the rotary cutter (2) is flushed out of the rotary cutter by using an air flow channel of the air flow reduction structure, the three-phase mixture of the gas and the liquid is carried out for the first time or the sludge enters the gas-water contact cylinder (4), and the sludge is discharged out of the aerator by using a gas-water through hole of the gas-water contact cylinder (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710355313.2A CN106966516B (en) | 2017-05-19 | 2017-05-19 | Curved surface aerator and aeration method |
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| CN201710355313.2A CN106966516B (en) | 2017-05-19 | 2017-05-19 | Curved surface aerator and aeration method |
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| CN106966516B true CN106966516B (en) | 2023-02-10 |
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| CN110563131B (en) * | 2019-08-29 | 2024-06-14 | 浙江聚源环保科技有限公司 | MBR membrane aerator, MBR membrane aeration device and MBR membrane sewage treatment equipment |
| CN110436612B (en) * | 2019-09-04 | 2022-02-08 | 中国电建集团中南勘测设计研究院有限公司 | Curved surface aerator and aeration method |
| CN110407312B (en) * | 2019-09-04 | 2022-03-11 | 中国电建集团中南勘测设计研究院有限公司 | Aerator and aeration method |
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| CN102139951A (en) * | 2011-02-22 | 2011-08-03 | 中国水电顾问集团中南勘测设计研究院 | Rotational flow shearing bubble aerator |
| CN102777352A (en) * | 2012-08-09 | 2012-11-14 | 重庆气体压缩机厂有限责任公司 | Breathing device for crankcase of air compressor |
| CN103553208A (en) * | 2013-11-19 | 2014-02-05 | 林太才 | Aerator |
| EP2868368A2 (en) * | 2013-10-14 | 2015-05-06 | Advanced Enviro Technology Limited | An aerator |
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| CN102139951A (en) * | 2011-02-22 | 2011-08-03 | 中国水电顾问集团中南勘测设计研究院 | Rotational flow shearing bubble aerator |
| CN102777352A (en) * | 2012-08-09 | 2012-11-14 | 重庆气体压缩机厂有限责任公司 | Breathing device for crankcase of air compressor |
| EP2868368A2 (en) * | 2013-10-14 | 2015-05-06 | Advanced Enviro Technology Limited | An aerator |
| CN103553208A (en) * | 2013-11-19 | 2014-02-05 | 林太才 | Aerator |
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