CN110713225B - Angle type labyrinth cavitation generator - Google Patents
Angle type labyrinth cavitation generator Download PDFInfo
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- CN110713225B CN110713225B CN201911028441.1A CN201911028441A CN110713225B CN 110713225 B CN110713225 B CN 110713225B CN 201911028441 A CN201911028441 A CN 201911028441A CN 110713225 B CN110713225 B CN 110713225B
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- circular ring
- cavitation
- labyrinth
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention provides an angle type labyrinth cavitation generator which comprises a shell and a labyrinth assembly, wherein the labyrinth assembly is hermetically arranged between an inlet and an outlet of the shell, and a plurality of cavitation generation channels are arranged in the labyrinth assembly. The labyrinth subassembly includes circle and lower circle, go up and be equipped with a plurality of ring pieces down between the circle, it is adjacent be equipped with a plurality of cavitation on the contact surface of ring piece and take place the runner. Grooves which are uniformly distributed along the circumferential direction and the radial direction of the circle center of the circular ring piece are respectively arranged on the front surface and the back surface of any circular ring piece; a cavitation groove is arranged at the bottom of any groove; and the grooves between adjacent circular ring pieces form a cavitation generation flow passage which is communicated along the radial direction. The grooves uniformly distributed on the front side of the circular ring sheet and the grooves uniformly distributed on the back side of the circular ring sheet are distributed in a staggered manner; the area of the cross section of the groove increases in sequence along the flow direction of the fluid, and the depth of the cross section of the groove increases in sequence along the flow direction of the fluid. The invention can efficiently treat and degrade organic pollutants in sewage and has wide development space and application prospect.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to an angle type labyrinth cavitation generator.
Background
With the continuous development of modern industries such as pharmacy, chemical industry, printing and dyeing and the like, the number of artificially synthesized macromolecular organic matters and difficultly-degraded chemical substances in water bodies increases year by year, so that the traditional sewage treatment method is difficult to adapt to the increasingly strict environmental protection requirements at present, and the advantage of degrading organic pollutants by hydrodynamic cavitation is reflected. Hydrodynamic cavitation is a hydrodynamic phenomenon. Extreme conditions such as local high temperature and high pressure, luminescence, discharge, strong shock wave, high-speed jet flow and the like provided when cavitation bubbles generated in the hydrodynamic cavitation process move and collapse in liquid can strengthen physical and chemical processes, for example, water molecules can generate chemical bond fracture and generate free radicals in the cavitation bubbles, and the purpose of degrading organic pollutants is further achieved. The existing cavitation generator adopts a single-stage pore plate structure, so that incomplete cavitation reaction is easy to occur, organic pollutants still remain in the treated sewage, and the final purpose of sewage treatment can be achieved only by further hydrodynamic cavitation degradation.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the angle type labyrinth cavitation generator which is simple and compact in structure, can efficiently treat and degrade organic pollutants in sewage by virtue of the structure of the labyrinth cavitation sleeve, and has wide development space and application prospect.
The present invention achieves the above-described object by the following technical means.
The utility model provides an angle type labyrinth cavitation generator, includes shell and labyrinth subassembly, seal installation labyrinth subassembly between the import of shell and the export, be equipped with a plurality of cavitation generation runners in the labyrinth subassembly.
Furthermore, the labyrinth subassembly includes circle and lower circle, go up and be equipped with a plurality of ring pieces between circle and the lower circle, it is adjacent be equipped with a plurality of cavitations on the contact surface of ring piece and take place the runner.
Furthermore, grooves which are uniformly distributed along the circumferential direction and the radial direction of the circle center of the circular ring sheet are respectively arranged on the front surface and the back surface of any circular ring sheet; a cavitation groove is arranged at the bottom of any groove; and the grooves between adjacent circular ring pieces form a cavitation generation flow passage which is communicated along the radial direction.
Furthermore, the grooves uniformly distributed on the front surface of the circular ring sheet and the grooves uniformly distributed on the back surface of the circular ring sheet are distributed in a staggered manner; the area of the cross-section of the groove increases in sequence in the direction of fluid flow, and the depth of the cross-section of the groove increases in sequence in the direction of fluid flow.
Furthermore, a groove on the front surface of the circular ring piece close to the end surface of the inner ring of the circular ring piece is a cavitation generation runner inlet, a groove on the front surface of the circular ring piece close to the end surface of the outer ring of the circular ring piece is a cavitation generation runner outlet, and the cross sections of the cavitation generation runner inlet and the cavitation generation runner outlet are semicircular; the cross section of the groove on the front side and the back side of the remaining circular ring sheet is an arc surface or a conical surface.
Further, when the cross sections of the grooves on the front side and the back side of the remaining circular ring sheet are circular arc surfaces, the radiuses of all the circular arc surfaces are the same, and the radius of each circular arc surface is 1-1.4 times of the depth of the groove with the maximum depth; when the cross section of the groove is a conical surface, the vertex angle of the conical surface is 60-150 degrees.
Further, the depth of the cavitation groove is 0.8-1.5 times of the maximum depth of the groove.
Further, the minimum wall thickness in the circular ring piece is not less than 1/5 of the thickness of the circular ring piece.
Furthermore, the front and back of the ring piece are provided with positioning pins for ensuring the relative position of the grooves of the adjacent ring pieces.
Further, the central axis of the inlet section of the shell coincides with the central axis of the labyrinth assembly, and the shell is in sealing fit with the spigot of the upper ring.
The invention has the beneficial effects that:
1. the angle-type labyrinth cavitation generator can efficiently treat and degrade organic pollutants in sewage through the cavitation generation flow channel formed by the plurality of labyrinth discs.
2. According to the angle-type labyrinth cavitation generator, under the action of high pressure, sewage flows into the downstream through the cavitation generation flow channel and is subjected to the action of the labyrinth component, so that organic pollutants are more effectively degraded, and the cavitation efficiency is high.
3. The angle-type labyrinth cavitation generator is simple in structure, production period is shortened, product cost is reduced, and machining of the runner on the circular ring piece can be completed only by one numerical control drilling machine.
Drawings
Fig. 1 is a structural view of an angle type labyrinth cavitation generator according to the present invention.
FIG. 2 is a view showing the structure of the labyrinth assembly according to the present invention.
Fig. 3 is a schematic view of different circular groove structures according to the present invention.
FIG. 4 is a schematic diagram of the front and back side structures of the disk of the present invention.
Fig. 5 is a schematic flow diagram of a cavitation flow channel according to the present invention.
In the figure:
1-a housing; 2-sealing the upper part; 3-a labyrinth component; 4-lower sealing; 5-sealing the bottom cover; 6-bottom cover; 301-upper ring; 302-a ring piece; 303-lower ring; 302 a-slot; 302 b-cavitation slots; 302 c-locating pin.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
As shown in fig. 1 and 2, the angular labyrinth cavitation generator of the present invention includes a housing 1 and a labyrinth assembly 3, the labyrinth assembly 3 is hermetically installed between an inlet and an outlet of the housing 1, and a plurality of cavitation generation channels are disposed in the labyrinth assembly 3. Labyrinth subassembly 3 includes circle 301 and circle 303 down, be equipped with a plurality of ring pieces 302 between circle 301 and the circle 303 down, it is adjacent be equipped with a plurality of cavitation on the contact surface of ring piece 302 and take place the runner. An upper seal 2 is arranged between the shell 1 and the upper ring 301, a lower seal 4 is arranged between the lower ring 303 and the bottom cover 6, a bottom cover seal 5 is arranged between the shell 1 and the bottom cover 6, and the shell 1 and the bottom cover 6 are fixedly connected. The adjacent disks 302 are positioned with a positioning pin 302c therebetween. Grooves 302a which are uniformly distributed along the circumferential direction and the radial direction of the circle center of the circular ring piece 302 are respectively arranged on the front side and the back side of any circular ring piece 302; as shown in fig. 4, by taking the front surface of the circular ring piece 302 as an example, the radial direction of the front surface of the circular ring piece 302 is linearly distributed with 5 grooves 302a, and the linearly distributed 5 grooves 302a are considered to be uniformly distributed at 45 degrees in the circumferential direction as a whole. The bottom of any groove 302a is provided with an empty groove 302 b; the grooves 302a between adjacent circular ring pieces 302 form cavitation generation flow passages which are communicated along the radial direction. The central axis of the inlet section of the shell 1 coincides with the central axis of the labyrinth assembly 3, and the shell 1 is provided with a positioning fit at a position close to the upper ring 301 and is sealed by adopting an upper seal 2. As shown in fig. 3 and 4, the grooves 302a are uniformly distributed on the front and back sides of the disk sheet 302 along the circumferential direction of the center circle of the disk sheet 32, and a hollowed groove 302b is arranged at the bottom of any groove 302 a; the grooves 302a between adjacent circular ring pieces 302 form cavitation generation flow passages which are communicated along the radial direction. The grooves 302a uniformly distributed on the front surface of the circular ring piece 302 and the grooves 302a uniformly distributed on the back surface of the circular ring piece 302 are distributed in a staggered manner; the cross-sectional area of the groove 302a increases in the direction of fluid flow, and the cross-sectional depth of the groove 302a increases in the direction of fluid flow. A groove 302a on the front surface of the circular ring piece 302 close to the inner ring end surface of the circular ring piece 302 is an inlet of a cavitation generation flow channel, a groove 302a on the front surface of the circular ring piece 302 close to the outer ring end surface of the circular ring piece 302 is an outlet of the cavitation generation flow channel, and the cross sections of the inlet and the outlet of the cavitation generation flow channel are semicircular; from the cavitation generation flow passage inlet to the cavitation generation flow passage outlet, the area of the cross section of the groove 302a increases in order, and the depth of the cross section of the groove 302a increases in order. The cross section of the groove 302a on the front and back surfaces of the remaining circular ring piece 302 is an arc surface or a conical surface. When the cross sections of the grooves 302a on the front and back surfaces of the remaining circular ring pieces 302 are circular arc surfaces, the radiuses of all the circular arc surfaces are the same, and the radius of each circular arc surface is 1-1.4 times of the depth of the groove 302a with the maximum depth; when the cross section of the groove 302a is a conical surface, the vertex angle of the conical surface is 60-150 degrees. The grooves 302a on the front side and the back side of the disk 302 are distributed in a staggered mode, the depth of the cavitation groove 302b is 0.8-1.5 times of the maximum depth of the groove 302a, when the depth of the cavitation groove 302b is smaller than the limit, cavitation is incomplete, and when the depth of the cavitation groove 302b is larger than the limit, the disk is too thick, and the cavitation effect is not obvious. The minimum wall thickness in the circular ring piece 302 should not be less than 1/5 of the thickness of the disk. Positioning pins 302c are processed on the front and back surfaces of the circular ring piece 302 and used for ensuring the relative position of the circular grooves of the adjacent circular ring pieces 302 when the circular ring pieces 302 are assembled; the circular ring pieces 302 are fixed, and the upper ring 301 and the lower ring 303 are respectively fixed up and down. After the labyrinth assembly 3 is fixed, hardening treatment is carried out; the hardening treatment is nitriding.
The assembly steps of the invention are as follows:
the grooves 302a in each segment 302 allow the grooves 302a in the disc 32 to be machined by only one type of drill of a drilling machine to control the depth of the drilled hole to achieve the initial machining. Then, a smaller type drill is replaced, and a hollow groove 302b is machined in the bottom surface of the groove 302a, so that the circular ring piece 302 is machined.
Each circular ring piece 302 is fixedly installed through a positioning pin 302c on the circular ring piece 302, the upper ring 301 and the lower ring 303 are respectively and fixedly connected up and down, the labyrinth assembly 3 is assembled, and then the labyrinth assembly 3 is hardened through nitriding.
The upper seal 2 is firstly placed in a groove of the middle cavity of the shell 1 close to the inlet section, then the labyrinth assembly 3 and the lower seal 4 are sequentially placed, the bottom cover seal 5 is placed at the bottom of the shell 1, and then the bottom cover 6 is fixedly installed.
The working principle is as follows:
when the fluid medium flows through the present invention, the flow direction of the fluid medium is shown in fig. 1 and 5, and the working medium flows in from the inlet of the device, and then flows through the inlet end of the housing 1, the labyrinth assembly 3, the outlet section of the housing 1 to the outlet of the device in sequence. When the working medium flows through the labyrinth assembly 3, the change of the flow cross section of the cavitation generation flow channel in the labyrinth assembly 3 is obvious due to the shape change of the adjacent grooves 302a, and the violent change of the flow cross section is increased and the occurrence of the induced cavitation due to the arrangement of the cavitation grooves 302 b. Meanwhile, the cavitation generation flow channel limits the cavitation generation in a smaller area, and compared with the arrangement of a single orifice plate, the cavitation generation flow channel can play the roles of vibration reduction and noise reduction.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (7)
1. The angle type labyrinth cavitation generator is characterized by comprising a shell (1) and a labyrinth assembly (3), wherein the labyrinth assembly (3) is hermetically arranged between an inlet and an outlet of the shell (1), and a plurality of cavitation generation channels are arranged in the labyrinth assembly (3);
the labyrinth assembly (3) comprises an upper ring (301) and a lower ring (303), a plurality of circular ring pieces (302) are arranged between the upper ring (301) and the lower ring (303), and a plurality of cavitation generation flow channels are arranged on the contact surfaces of the adjacent circular ring pieces (302);
grooves (302a) which are uniformly distributed along the circumferential direction and the radial direction of the circle center of the circular ring piece (302) are respectively arranged on the front side and the back side of any circular ring piece (302); a hollowed groove (302b) is arranged at the bottom of any groove (302 a); grooves (302a) between adjacent circular ring pieces (302) form a cavitation generation flow passage which is communicated along the radial direction; a groove (302a) in the front of the circular ring piece (302) close to the end face of the inner ring of the circular ring piece (302) is an inlet of a cavitation generation runner, and a groove (302a) in the front of the circular ring piece (302) close to the end face of the outer ring of the circular ring piece (302) is an outlet of the cavitation generation runner;
the grooves (302a) uniformly distributed on the front surface of the circular ring piece (302) and the grooves (302a) uniformly distributed on the back surface of the circular ring piece (302) are distributed in a staggered manner; the area of the cross-section of the groove (302a) increases in the fluid flow direction, and the depth of the cross-section of the groove (302a) increases in the fluid flow direction.
2. The angled labyrinth cavitation generator as claimed in claim 1, wherein the cavitation generation flow channel inlet and outlet are semi-circular in cross-section; the cross section of the groove (302a) on the front and back surfaces of the rest of the circular ring piece (302) is an arc surface or a conical surface.
3. The angular labyrinth cavitation generator as claimed in claim 2, wherein, when the cross section of the grooves (302a) on the front and back sides of the remaining circular ring piece (302) is circular arc surface, the radius of all the circular arc surfaces is the same, and the radius of the circular arc surface is 1 to 1.4 times the depth of the groove (302a) with the maximum depth; when the cross section of the groove (302a) is a conical surface, the vertex angle of the conical surface is 60-150 degrees.
4. The angular labyrinth cavitation generator as claimed in claim 1, wherein the depth of the cavitation grooves (302b) is 0.8-1.5 times the maximum depth of the grooves (302 a).
5. The angular labyrinth cavitation generator as claimed in claim 1, characterized in that the minimum wall thickness within the circular piece (302) must not be less than 1/5 of the thickness of the circular piece (302).
6. The angular labyrinth cavitation generator as claimed in claim 1, characterized in that the front and back faces of the circular ring pieces (302) are provided with positioning pins (302c) for ensuring the relative positions of the grooves (302a) of adjacent circular ring pieces (302).
7. The angular labyrinth cavitation generator as claimed in claim 1, characterized in that the central axis of the inlet section of the housing (1) coincides with the central axis of the labyrinth assembly (3), the housing (1) being in sealing engagement with the spigot of the upper ring (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028441.1A CN110713225B (en) | 2019-10-28 | 2019-10-28 | Angle type labyrinth cavitation generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028441.1A CN110713225B (en) | 2019-10-28 | 2019-10-28 | Angle type labyrinth cavitation generator |
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| Publication Number | Publication Date |
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| CN110713225A CN110713225A (en) | 2020-01-21 |
| CN110713225B true CN110713225B (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911028441.1A Active CN110713225B (en) | 2019-10-28 | 2019-10-28 | Angle type labyrinth cavitation generator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115403236B (en) * | 2022-10-31 | 2023-02-03 | 湖南博世科环保科技有限公司 | Sludge cavitator and sludge breaking device and sludge reduction system applying same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3977439A (en) * | 1973-03-22 | 1976-08-31 | Societe Generale De Constructions Electriques Et Mecaniques (Alsthom) | Sealing arrangement |
| CN103133763A (en) * | 2012-12-31 | 2013-06-05 | 浙江中控流体技术有限公司 | Labyrinth type pressure reduction and noise reduction device |
| CN108036923A (en) * | 2018-02-05 | 2018-05-15 | 中国石油大学(华东) | A kind of convergence-divergence form laminar condition cavitation test device and design method |
| CN109534442A (en) * | 2018-12-05 | 2019-03-29 | 江苏大学 | A kind of angle-style multistage cavitation generator |
-
2019
- 2019-10-28 CN CN201911028441.1A patent/CN110713225B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3977439A (en) * | 1973-03-22 | 1976-08-31 | Societe Generale De Constructions Electriques Et Mecaniques (Alsthom) | Sealing arrangement |
| CN103133763A (en) * | 2012-12-31 | 2013-06-05 | 浙江中控流体技术有限公司 | Labyrinth type pressure reduction and noise reduction device |
| CN108036923A (en) * | 2018-02-05 | 2018-05-15 | 中国石油大学(华东) | A kind of convergence-divergence form laminar condition cavitation test device and design method |
| CN109534442A (en) * | 2018-12-05 | 2019-03-29 | 江苏大学 | A kind of angle-style multistage cavitation generator |
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| CN110713225A (en) | 2020-01-21 |
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