CN110127798B - Microbubble dissolved air water generating device - Google Patents
Microbubble dissolved air water generating device Download PDFInfo
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- CN110127798B CN110127798B CN201910553248.3A CN201910553248A CN110127798B CN 110127798 B CN110127798 B CN 110127798B CN 201910553248 A CN201910553248 A CN 201910553248A CN 110127798 B CN110127798 B CN 110127798B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 238000000926 separation method Methods 0.000 claims abstract description 36
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 17
- 239000011259 mixed solution Substances 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 2
- 210000003128 head Anatomy 0.000 description 11
- 230000009471 action Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000003381 stabilizer Substances 0.000 description 10
- 230000006872 improvement Effects 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 230000000087 stabilizing effect Effects 0.000 description 6
- 238000010408 sweeping Methods 0.000 description 6
- 239000010865 sewage Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 238000006124 Pilkington process Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/2366—Parts; Accessories
- B01F23/2368—Mixing receptacles, e.g. tanks, vessels or reactors, being completely closed, e.g. hermetically closed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
- B01F23/2373—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media for obtaining fine bubbles, i.e. bubbles with a size below 100 µm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
- B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
- B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
- B01F23/237611—Air
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention relates to the technical field of air floatation water purification, and discloses a microbubble dissolved air water generating device. The microbubble dissolved air water generating device comprises a dissolved air tank and a cyclone separation device which are vertically arranged. The side wall of the dissolved air tank, which is close to the bottom, is provided with a tangential inlet I which is cut into the corresponding side wall and communicated with the inside of the dissolved air tank, and the tangential inlet I is used for inputting a gas-liquid mixture. The cyclone separating device comprises at least one cyclone separating tube assembly vertically arranged in the dissolved air tank, and a tangential inlet II which is cut into the corresponding side wall and communicated with the interior of the corresponding cyclone separating tube assembly is formed in the side wall of each cyclone separating tube assembly. According to the invention, tangential water inlet and cyclone separation pipe components are adopted to form a cyclone with extremely high speed gradient to carry out secondary cutting and crushing on bubbles, so that the gas dissolving efficiency and the gas carrying capacity are higher than those of the traditional gas dissolving tank, and the prepared gas dissolving water carries a large amount of micro bubbles after cutting and crushing, thereby forming the supersaturated gas dissolving water.
Description
Technical Field
The invention relates to a bubble dissolved air water generating device in the technical field of air floatation water purification, in particular to a micro-bubble dissolved air water generating device.
Background
An air flotation device is a water treatment device that separates water from suspended matter by causing suspended matter to adhere to bubbles and rise to the water surface. There is also a method of separating water from water by floating surfactant attached to the surface of bubbles, called foam air method. The equipment used in the air floatation method comprises an air floatation tank for completing the separation process and auxiliary equipment for generating air bubbles. In water treatment, the air-float method can be used in the place where the precipitation method is not applicable to separate suspended matters with specific gravity close to that of water and difficult to precipitate, such as grease, fiber, algae and the like, and can also be used for concentrating activated sludge.
The bubble particle size in the dissolved air water prepared by the traditional auxiliary equipment for generating bubbles is coarse and uneven, and the technical defect that the disturbance of the dissolved air water in the release process is large is easily caused, meanwhile, the inside of the traditional dissolved air tank is easy to be polluted, so that the action sensitivity of a liquid level switch on the traditional dissolved air tank is reduced.
Disclosure of Invention
Aiming at the prior art, the invention provides the microbubble dissolved air water generating device which can not only prepare the microbubble dissolved air water, namely the supersaturated dissolved air water, but also separate large bubbles to prepare the microbubble water with uniform particle size, and can sweep the inner wall of a cleaning tank and separate oil pollutants with density smaller than that of water.
The invention is realized by adopting the following technical scheme: a microbubble dissolved air water generating device for generating microbubble dissolved air water, the microbubble dissolved air water generating device comprising:
the device comprises a dissolved air tank which is vertically arranged, wherein a tangential inlet I which is cut in from the corresponding side wall and communicated with the interior of the dissolved air tank is formed in the side wall, close to the bottom, of the dissolved air tank, and the tangential inlet I is used for inputting a gas-liquid mixed solution; and
the cyclone separation device comprises at least one cyclone separation tube assembly, and a tangential inlet II which is cut into the corresponding side wall and communicated with the interior of the corresponding cyclone separation tube assembly is formed in the side wall of each cyclone separation tube assembly;
the water pressure of the gas-liquid mixed solution meets the following conditions:
(1) Enabling the gas-liquid mixture to spirally rise along the side wall of the dissolved air tank through the tangential inlet I to form a first cyclone body, wherein the first cyclone body is provided with a spiral vortex area and a vortex eye area positioned at the center of the vortex area, and a plurality of cyclone separation pipe assemblies are accommodated in the dissolved air tank and are vertically arranged in the vortex area;
(2) After the first cyclone body rises to the second tangential inlet, part of the gas-liquid mixed liquid enters the cyclone separation tube assembly through the second tangential inlet, and the gas-liquid mixed liquid is spirally lowered through the cyclone separation tube assembly to form the micro-bubble gas-dissolved water and is discharged.
As a further improvement of the above-mentioned aspect, the cyclone tube assembly comprises, in order from top to bottom in the standing direction:
one end of the first pipeline is a first discharge end communicated with the outside of the dissolved air tank;
one end of the second pipeline is communicated with the other end of the first pipeline, the diameter of the second pipeline is larger than that of the first pipeline, and the second tangential inlet is formed in the side wall of the second pipeline;
one end of the third pipeline is communicated with the other end of the second pipeline and has the same diameter, and the other end of the third pipeline is in a variable-diameter shape; and
and one end of the pipeline IV is communicated with the other end of the pipeline III and has the same diameter, the other end of the pipeline IV is a discharge end II communicated with the outside of the dissolved air tank, and the discharge end II discharges the micro-bubble dissolved air water.
Further, the third pipeline includes:
the first reducing section is connected with one end of the second pipeline far away from the first pipeline; and
the second reducing section is connected with one end of the first reducing section, which is far away from the second pipeline;
the first reducing section and the second reducing section are both folded and inclined towards the center, and the inclination of the first reducing section is larger than that of the second reducing section.
As a further improvement of the above, the tangential inlet is cut horizontally perpendicular to the corresponding sidewall of the dissolved air tank or is cut obliquely upward to the corresponding sidewall of the dissolved air tank.
As a further improvement of the above solution, the tangential inlet two is cut horizontally perpendicular to the corresponding side wall of the conduit two or is cut obliquely downward to the corresponding side wall of the conduit two.
As a further improvement of the scheme, a first converging cavity is isolated at the bottom of the dissolved air tank, the tangential inlet is higher than the first converging cavity at the position of the dissolved air tank, all the second discharging ends are communicated with the first converging cavity, and an output port is formed in the first converging cavity.
As a further improvement of the scheme, the dissolved air tank is provided with a first vent hole, the first vent hole is higher than the liquid level of the gas-liquid mixture in the dissolved air tank at the position of the dissolved air tank, and the gas is supplied to the dissolved air tank through the first vent hole.
As a further improvement of the scheme, the air dissolving tank is provided with a second air vent, the position of the second air vent in the air dissolving tank is higher than the liquid level of the gas-liquid mixed liquid in the air dissolving tank, and the excessive air overflowed from the first cyclone body is discharged and recycled through the second air vent.
As a further improvement of the scheme, a second converging cavity is isolated from the top of the dissolved air tank, all the first discharging ends are communicated with the second converging cavity, and the second converging cavity is provided with a waste discharge port.
As a further improvement of the scheme, the dissolved air tank comprises a dissolved air tank, an upper sealing head and a lower sealing head; the tangential inlet I is arranged on the dissolved air tank, the cyclone separation device is arranged in the dissolved air tank, the upper sealing head is of a hollow structure, all the discharge ends I are communicated with the upper sealing head, and the upper sealing head is provided with a waste discharge port; all the second discharge ends are communicated with the lower seal head, and the lower seal head is provided with an output port.
The beneficial effects of the invention are as follows:
1. according to the invention, firstly, through a tangential inlet I on the gas dissolving tank, under the condition of pressurizing the gas-liquid mixed solution, the gas-liquid mixed solution spirally rises on the side wall of the gas dissolving tank to form a first cyclone body, and in the cyclone process, large bubbles of the gas-water mixed solution can be sheared into micro bubbles, so that the carrying capacity of the gas-water dissolved micro bubbles is increased;
2. secondly, arranging a cyclone separation tube assembly in a vortex eye area of a first cyclone body, and under the condition of pressurizing gas-liquid mixed liquid, enabling part of the gas-liquid mixed liquid entering the cyclone separation tube assembly to face to the opposite direction by means of a tangential inlet II designed on the side wall of the cyclone separation tube assembly, and spirally descending on the side wall of the cyclone separation tube assembly to form secondary cyclone with extremely high speed gradient so as to cut and crush bubbles for the second time, so that the gas dissolving efficiency and the gas carrying capacity are higher than those of the traditional gas dissolving tank, and the prepared gas dissolving water is used for removing dissolved gas and carrying a large number of micro bubbles for cutting and crushing so as to form supersaturated gas dissolving water;
3. the invention relates to an integral cyclone structure design of a cyclone dissolved air tank, which can effectively prevent dirt from adhering to the inner wall of the tank under the cyclone rolling and sweeping action, and even the dirt adhered during shutdown can be removed under the cyclone rolling and sweeping action during startup, and meanwhile, the dirt (such as oil) with lower density than water is discharged along with large bubbles after being separated from dissolved air and water.
Drawings
FIG. 1 is a schematic perspective view of a microbubble dissolved air water generating device according to an embodiment of the present invention;
FIG. 2 is an exploded view of the dissolved air tank of FIG. 1;
FIG. 3 is a schematic perspective view of the microbubble dissolved air water generator in FIG. 1, with a portion of the dissolved air tank removed;
fig. 4 is a schematic structural view of the components of the microbubble dissolved air water generator in fig. 3, which are located in the dissolved air tank.
Fig. 5 is a partial cross-sectional view of the swirl imparting tube assembly of fig. 4.
Main symbol description:
11-a dissolved air tank; 111-tangential inlet one; 112-vent one; 113-a second vent hole; 114-a safety vent; 115-a dirt removal port; 116-a sewage outlet; 12-an upper seal head; 121-a waste outlet; 13-a lower end socket; 131-an output port; 21-well plate one; 22-orifice plate two; 23-cyclone separator tube assembly; 231-pipe one; 232-second pipeline; 2321-tangential inlet two; 233-pipe three; 233 a-variable diameter section one; 233 b-a second variable diameter section; 234-pipe four; 24-steady flow plate; 40-supporting seats; 14-bracket.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic perspective view of a microbubble dissolved air and water generating device according to an embodiment of the present invention. The microbubble dissolved air water generating device is used for generating microbubble dissolved air water, the microbubble dissolved air water in the scheme means that bubbles in water exist in a mixed mode in units of micron-level and nano-level, and when the bubbles exist in a diameter of more than 50 microns, the bubbles can be observed by naked eyes. When a large amount of bubbles exist in water, the pure water solution can be observed to be milky white under the refraction effect of light, and is commonly called milk. The microbubble dissolved air water generating device comprises a dissolved air tank 11 and a cyclone separation device arranged in the dissolved air tank 11.
The dissolved air tank 11 can be generally made of metal, and in this embodiment, the dissolved air tank 11 is vertically disposed on the ground, so that the whole micro-bubble dissolved air water generating device can also be called a vertical micro-bubble dissolved air water generating device. The tank 11 may be supported on the ground by a support 14, and the support 14 may be supported by a plurality of relatively simple support columns. The dissolved air tank 11 may include an upper head 12 and a lower head 13. The dissolved air tank 11 can be a cylinder with two through ends, and the upper seal head 12 and the lower seal head 13 respectively encapsulate the two ends of the dissolved air tank 11. The upper seal head 12 and the lower seal head 13 can be connected with the dissolved air tank 11 through welding or flanges, and can be integrally formed with the dissolved air tank 11.
Referring to fig. 2, the sidewall of the dissolved air tank 11 is provided with a plurality of holes communicating with the interior of the dissolved air tank 11 as required, in this embodiment, the sidewall of the dissolved air tank 11 near the lower seal head 13 is provided with a tangential inlet one 111 cut into the corresponding sidewall and communicating with the interior of the dissolved air tank 11, and is also provided with a sewage disposal port 115 and a sewage drain 116; the side wall of the dissolved air tank 11, which is close to the upper seal head 12, is provided with a safety discharge port 114, a first vent hole 112 and a second vent hole 113; the top of the upper seal head 12 is provided with an exhaust gas outlet 121. In this embodiment, the first tangential inlet 111, the purge port 115, the drain 116, the safety vent 114, the first vent 112, the second vent 113, and the exhaust outlet 121 may be conveniently connected to the outside, and in other embodiments, the first vent and the second vent may be provided without flanges, so long as they can communicate with the outside of the dissolved air tank 11, and no intermediate member such as a flange or a valve is required.
Wherein the tangential inlet one 111 is used for inputting a gas-liquid mixture. The gas-liquid mixture can be fed by a jet mixer or a gas-liquid mixing pump. The tangential inlet 111 may be cut horizontally perpendicular to the corresponding sidewall of the tank 11 or obliquely upward to the corresponding sidewall of the tank 11, and may be selected by the operator according to product processing requirements. The safety discharge port 114 is provided with a drain valve for draining the gas-liquid mixture in the dissolved air tank 11, and of course, an electronic valve can be installed, and a liquid level switch can be also a common liquid level float switch, so that the liquid level in the dissolved air tank 11 can be kept in a range where the liquid level always tends to be stable.
Referring to fig. 3 and 4, the cyclone separating apparatus includes a first orifice plate 21, a second orifice plate 22, a flow stabilizer 24, and at least one cyclone separating tube assembly 23 (in this embodiment, the number of cyclone separating tube assemblies 23 is exemplified by 6), and a second tangential inlet 2321 cut into the sidewall of each cyclone separating tube assembly 23 and communicating with the interior of the corresponding cyclone separating tube assembly 23 is formed on the sidewall of each cyclone separating tube assembly 23.
The water pressure of the gas-liquid mixed solution meets the following conditions:
(1) Enabling the gas-liquid mixture to spirally rise along the side wall of the dissolved air tank 11 through the tangential inlet I111 to form a cyclone body I which is provided with a spiral vortex area and a vortex eye area positioned at the center of the vortex area, wherein a plurality of cyclone separation pipe assemblies 23 are accommodated in the dissolved air tank 11 and are vertically arranged in the vortex area;
(2) After the cyclone body I rises to the tangential inlet II 2321, part of the gas-liquid mixture enters the cyclone separation tube assembly 23 through the tangential inlet II 2321, spirally descends along the inner wall of the cyclone separation tube assembly 23 to form micro-bubble dissolved gas and water, and is discharged.
Referring to fig. 5, each cyclone tube assembly 23 includes a first tube 231, a second tube 232, a third tube 233, and a fourth tube 234 in order from top to bottom in the vertical direction.
The first pipe 231 is an elongated pipe body with a constant inner diameter, and one end of the first pipe 231 may be a discharge end first communicating with the outside of the dissolved air tank 11. The other end of the first conduit 231 communicates with one end of the second conduit 232. In this embodiment, the other end of the first pipe 231 is sleeved in the second pipe 232, and the fixed connection between the first pipe 231 and the second pipe 232 is sealed. Of course, in other embodiments, the fixing connection portion between the first pipe 231 and the second pipe 232 may be fixed by welding, so long as the sealing performance of the connection portion between the first pipe 231 and the second pipe 232 is not affected, and other connection manners are also possible.
The end of the first pipe 231 far from the second pipe 232 penetrates through the first orifice plate 21 and then is communicated with the second converging cavity. The first pipe 231 can collect large bubbles located at the center of the second cyclone body (the fluid entering the second pipe 232 and spirally descending along the inner wall of the second pipe is defined as the second cyclone body) and pollutants with density smaller than that of water at the second converging cavity and discharge the pollutants out of the dissolved air tank 11 together through the waste discharge port 121.
The second pipe 232 is a pipe body with a rectangular cross section. One end of the second pipeline 232 is communicated with the other end of the first pipeline, and a tangential inlet 2321 cut into the corresponding side wall and communicated with the interior of the second pipeline 232 is formed in the side wall of the second pipeline 232. Part of the gas-liquid mixture rising to the second pipeline 232 enters the second pipeline 232 through the tangential inlet 2321 and rotates downwards under the action of pressure to form a second cyclone body. In this process, the tangential inlet 2321 will have tangential force to the large bubbles in the first rotating fluid, and cut and break part of the large bubbles in the gas-liquid mixture into micro bubbles, and then enter the second pipeline 232. Tangential inlet two 2321 is cut horizontally perpendicular to the corresponding side wall of conduit two 232 or obliquely downward to the corresponding side wall of conduit two 232, which may be selected by the operator based on product processing requirements.
One end of the third pipeline 233 is communicated with the other end of the second pipeline 232 and has the same diameter. When the second cyclone body flows into the third pipeline 233, the second cyclone body gradually rotates and accelerates, so that the residual large bubbles and pollutants with a density smaller than that of water are separated from the second cyclone body under the action of centripetal force and migrate to the center.
The other end of the third pipe 233 is of a variable diameter shape. The third pipe 233 includes a first reducing section 233a and a second reducing section 233b. The first reducing section 233a is a pipe body with a truncated cone-shaped section, and the inner radial center of the first reducing section 233a is folded and inclined. One end of the first reducing section 233a is communicated with the other end of the second pipeline 232 and has an equal diameter, in this embodiment, the first reducing section 233a is in sealing connection with the second pipeline 232, in other embodiments, the first reducing section 233a and the second pipeline 232 can be in sealing welding, so long as the communication stability between the first reducing section 233a and the second pipeline 232 is not affected, and other connection modes can be adopted.
The second reducing section 233b is a pipe body with a long frustum-shaped section, and the inner radial center of the second reducing section 233b is folded and inclined. One end of the second reducing section 233b is connected to the other end of the first reducing section 233 a. In this embodiment, the second reducing section 233b and the first reducing section 233a are welded in a sealing manner, and in other embodiments, the second reducing section 233b and the first reducing section 233a may be sleeved in a sealing manner, so long as the stability of communication between the second reducing section 233b and the first reducing section 233a is not affected, and other connection manners may be also used.
In this embodiment, the inclination of the first reducing section 233a is larger than that of the second reducing section 233b, so that the flow passage area of the second reducing section 233b is narrower than that of the first reducing section 233 a. When the second cyclone body 232 flows into the accelerating section 332a, the second cyclone body has higher rotation speed, and oil drops and large bubbles with larger difference between the second cyclone body and water are driven to be gathered towards the center of the cyclone field under the action of centripetal force due to the reduction of the contraction area of the flow passage.
Conduit four 234 is an elongated tubular body having a uniform inside diameter. One end of the fourth pipeline 234 is communicated with the other end of the second reducing section 233b of the third pipeline 233 and has an equal diameter. In this embodiment, the fourth pipeline 234 and the second reducing section 233b are welded in a sealing manner, and in other embodiments, the fourth pipeline 234 and the second reducing section 233b may be sleeved in a sealing manner, so long as the connection stability between the fourth pipeline 234 and the second reducing section 233b is not affected, and other connection manners may be also used.
The other end of conduit four 234 extends through lower orifice plate 32 and communicates with manifold chamber one. The first pipeline 234 can collect large bubbles positioned in the center of the cyclone body II and pollutants with density smaller than that of water at the second converging cavity and discharge the pollutants out of the dissolved air tank 11 through the waste discharge port 121.
Thus, when the gas-liquid mixture in the second cyclone body flows through the third pipe 233, the center of the cyclone field is compressed, the volume is reduced, a reaction force is formed, and the oil drops in the center part and the residual large bubbles are driven to move in opposite directions, are discharged to the second converging cavity through the first pipe 231, and are discharged from the waste discharge port 121 to the dissolved air tank 11. At the same time, the dissolved air water carrying the micro-bubbles approaches the homogeneous system, continues to flow down the fourth pipeline 234 to the first confluence chamber to be collected, and flows out through the output port 131. The number of cyclone tube assemblies 23, or different cyclone tube dimensions, may be selected by the operator based on the amount of water.
In this embodiment, in order to prevent the swirling gas-liquid mixture entering the dissolved air tank 11 tangentially from disturbing the liquid level in the tank, and affecting the detection accuracy of the liquid level switch, a stabilizer 24 is specially disposed at a certain distance above the water inlet of the swirl tube in the dissolved air tank 11.
The stabilizer 24 is a plate body that is circular in shape, and in other embodiments the stabilizer 24 may be an elliptical plate body as long as it is smaller than the inner diameter of the dissolved air tank 11 (i.e., a certain gap distance is left between the stabilizer 24 and the inner wall of the dissolved air tank 11 to allow water flow to pass through), or other shapes.
In this embodiment, the stabilizer 24 is inserted and fixed on the first pipe 231 between the first orifice 21 and the second orifice 22. At least one jack is provided in the stabilizer 24. In this embodiment, the number of the jacks on the stabilizer plate 24 is consistent with that of the cyclone separation tube assemblies 23, and the first pipe 231 in the cyclone separation tube assemblies 23 is vertically inserted into the jacks of the stabilizer plate 24. In addition, the stabilizer plate 24 is provided with at least one air flow hole.
Thereby, smooth fluid channels are formed in the dissolved air tanks 11 at the upper part and the lower part of the flow stabilizing plate 24, water mainly flows between the outer side of the flow stabilizing plate 24 and the inner wall of the dissolved air tank 11, and air flow holes at the inner side of the flow stabilizing plate 24 are mainly used for upwards flowing light phases (particularly large bubbles) collected in the center of the rotational flow field to the second air vent 113 and then are sucked and utilized by the jet mixer through the air suction pipe. And the energy dissipation effect is realized through the flow stabilizing plate 24, so that the disturbance of a pair of liquid level switches of the rotary body can be weakened, the liquid level can be kept in a stable state, and the detection accuracy of the liquid level switches is facilitated.
According to the invention, tangential water inlet and cyclone separation pipe components are adopted to form a cyclone with extremely high speed gradient to carry out secondary cutting and crushing on bubbles, so that the gas dissolving efficiency and the gas carrying capacity are higher than those of the traditional gas dissolving tank, and the prepared gas dissolving water carries a large amount of micro bubbles after cutting and crushing, thereby forming the supersaturated gas dissolving water. In the rotational flow process, large bubbles of the air-water mixed solution can be sheared into micro bubbles, so that the carrying capacity of the air-water dissolved micro bubbles is increased, the total air dissolving capacity is more than 2 times that of the traditional pressure air dissolving technology, and the traditional technology is generally 5-10%. The invention adopts the cyclone screening separation technology of the cyclone dissolved air tank, and in the cyclone process, large bubbles of the air-water mixed solution can be sheared into micro bubbles, so that the carrying capacity of the micro bubbles of the dissolved air-water is increased. The invention relates to an integral cyclone structure design of a cyclone dissolved air tank, which can effectively prevent dirt from adhering to the inner wall of the tank under the cyclone rolling and sweeping action, and even the dirt adhered during shutdown can be removed under the cyclone rolling and sweeping action during startup, and meanwhile, the dirt (such as oil) with lower density than water is discharged along with large bubbles after being separated from dissolved air and water.
The cyclone tube assemblies erected in the vortex region are distributed in the vortex region with the vortex eye region as a central ring as much as possible, and the other part of the gas-liquid mixture (containing large bubbles with larger diameters) continuously rises along the dissolved air tank 11, and submerges the flow stabilizing plate 24 through the gaps among the air flow holes, the insertion holes and the cyclone tube assemblies 23 on the flow stabilizing plate 24. When the liquid level is relatively high, the discharge can be performed through the drain valve of the safety vent 114. Large bubbles with larger diameters overflow from the first cyclone body through the second vent hole 113 and then enter a gas phase space in the middle of the dissolved gas tank 11 (the region occupied by the gas in the dissolved gas tank 11 is defined as a gas phase space).
The first vent 112 is located above the dissolved air tank 11 at a height higher than the liquid level of the gas-liquid mixture in the dissolved air tank 11. The first vent 112 may be used to replenish air within the dissolved air tank 11. The first vent hole 112 is connected with an external air pump through an air supplementing pipe. And a liquid level switch is arranged on the dissolved air tank 11 at one side of the first vent hole 112, and the liquid level switch can be a common liquid level floating ball switch.
Since the fluid in the interior of the dissolved air tank 11 entrains the gas in the dissolved air tank 11, the gas needs to be replenished to maintain the continuous operation in the dissolved air tank 11, thereby maintaining the upper gas phase space in the dissolved air tank 11 at a proper volume (height). The air supplementing electromagnetic valve is arranged on the air supplementing pipe of the dissolved air tank, when the liquid level switch is a low-level signal, the air phase volume is large enough, and the electromagnetic valve is closed at the moment when air supplementing is not needed; when the liquid level is high, the gas is dissolved by the water body and then is taken out of the dissolved gas tank 11, so that the gas amount in the dissolved gas tank 11 is reduced, and after the electromagnetic valve is opened, an external air pump pumps air into the dissolved gas tank 11 for air supplement. The air source pressure generated by the air pump in this embodiment is generally selected to be 0.1-0.3 MPa higher than the pressure in the dissolved air tank 11.
The second air vent 113 is positioned above the liquid level of the gas-liquid mixed liquid, the second air vent 113 is connected with the jet flow mixer through an air suction pipe, and the redundant gas overflowed from the first cyclone body in the dissolved air tank 11 enters the jet flow mixer for circulating suction and utilization after passing through the second air vent 113 and a pipeline. Manual valves are arranged on the sewage disposal opening 115 and the sewage drain opening 116. The maintenance personnel can clean the inside of the dissolved air tank 11 by injecting cleaning liquid into the cleaning port 115, and discharge the pollutants generated after cleaning in the dissolved air tank 11 through the drain port 116.
The upper head 12 is a cover body which is in a semicircular sphere shape as a whole in the embodiment, and is in a hollow structure. In other embodiments, the upper seal head 12 may be a cover body with a conical shape, so long as the suitability of the upper seal head and the dissolved air tank 11 is not affected, and other cover body structures are also possible.
The upper seal head 12 is arranged on the dissolved air tank 11. In this embodiment, the upper seal head 12 and the dissolved air tank 11 may be connected by a flange, and a sealing structure is disposed at the connection position of the upper seal head and the dissolved air tank 11, so as to ensure air tightness in the dissolved air tank 11. In other embodiments, the upper end enclosure 12 and the dissolved air tank 11 may be fixed by welding, so long as the air tightness and the connection stability between the upper end enclosure 12 and the dissolved air tank 11 are not affected, and other connection manners may be adopted.
The upper end enclosure 12 is provided with a waste discharge port 121. The number of the waste ports 121 is set to one in the present embodiment, and the number of the waste ports 121 may be set to a plurality in other embodiments. The waste discharge port 121 may be provided at a position in the middle of the top end of the upper head 12 or at a position on the periphery of the top of the upper head 12.
The lower head 13 is a cover body which is in a semicircular sphere shape as a whole in the embodiment, and is in a hollow structure. In other embodiments, the lower seal head 13 may be a cover body with a conical shape, so long as the suitability of the lower seal head and the dissolved air tank 11 is not affected, and other cover body structures are also possible.
The lower seal head 13 is oppositely arranged at one end of the dissolved air tank 11 far away from the upper seal head 12. In the embodiment, the lower end socket 13 and the dissolved air tank 11 can be sleeved and connected through a seal, and a sealing structure is arranged at the joint of the lower end socket 13 and the dissolved air tank 11 so as to ensure the air tightness in the dissolved air tank 11. In other embodiments, the lower end enclosure 13 and the dissolved air tank 11 may be fixed by welding, so long as the air tightness and the connection stability between the lower end enclosure 13 and the dissolved air tank 11 are not affected, and other connection manners are also possible.
The lower end enclosure 13 is provided with an output port 131, and in this embodiment, the number of output ports 131 is set to be one. And the position of the output port 131 can be in the middle of the bottom end of the lower seal head 13 or at the periphery of the bottom of the lower seal head 13.
According to the invention, firstly, through the tangential inlet I on the gas dissolving tank, the gas-liquid mixed solution spirally rises on the side wall of the gas dissolving tank to form a first cyclone body under the condition of pressurizing the gas-liquid mixed solution, and in the cyclone process, large bubbles of the gas-water mixed solution can be sheared into micro bubbles, so that the carrying capacity of the gas-water dissolved micro bubbles is increased. Secondly, through setting up the whirl separation tube subassembly in whirl body's vortex eye district, with the help of design tangential entry two on whirl separation tube subassembly lateral wall, and under the condition to gas-liquid mixture pressurization, make get into the inside part of whirl separation tube subassembly gas-liquid mixture towards opposite direction, the spiral descends on whirl separation tube subassembly lateral wall and forms the very big secondary whirl of velocity gradient and carry out the secondary cutting fragmentation to the bubble, reach and dissolve gas efficiency and bigger gas carrying volume than traditional gas pitcher, remove dissolved gas in the dissolved gas water that prepares, still carry a large amount of tiny bubbles that cut the fragmentation, formed supersaturated dissolved gas water. Furthermore, the integral cyclone structure design of the cyclone dissolved air tank can effectively prevent dirt from adhering to the inner wall of the tank under the cyclone rolling and sweeping action, even the dirt adhered during shutdown can be removed under the cyclone rolling and sweeping action during startup, and the dirt (such as oil) with lower density than water can be discharged along with large bubbles after being separated from dissolved air and water.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A microbubble dissolved air water generating device for generating microbubble dissolved air water, characterized in that the microbubble dissolved air water generating device comprises:
the device comprises a dissolved air tank which is vertically arranged, wherein a tangential inlet I which is cut in from the corresponding side wall and communicated with the interior of the dissolved air tank is formed in the side wall, close to the bottom, of the dissolved air tank, and the tangential inlet I is used for inputting a gas-liquid mixed solution; and
the cyclone separation device comprises at least one cyclone separation tube assembly, and a tangential inlet II which is cut into the corresponding side wall and communicated with the interior of the corresponding cyclone separation tube assembly is formed in the side wall of each cyclone separation tube assembly;
the water pressure of the gas-liquid mixed solution meets the following conditions:
(1) Enabling the gas-liquid mixture to spirally rise along the side wall of the dissolved air tank through the tangential inlet I to form a first cyclone body, wherein the first cyclone body is provided with a spiral vortex area and a vortex eye area positioned at the center of the vortex area, and a plurality of cyclone separation pipe assemblies are accommodated in the dissolved air tank and are vertically arranged in the vortex area;
(2) After the first cyclone body rises to the second tangential inlet, part of the gas-liquid mixed liquid enters the cyclone separation tube assembly through the second tangential inlet, and spirally descends along the inner wall of the cyclone separation tube assembly to form the micro-bubble gas-dissolved water and is discharged;
the cyclone separation tube assembly comprises from top to bottom in the vertical direction:
one end of the first pipeline is a first discharge end communicated with the outside of the dissolved air tank;
one end of the second pipeline is communicated with the other end of the first pipeline, the diameter of the second pipeline is larger than that of the first pipeline, and the second tangential inlet is formed in the side wall of the second pipeline;
one end of the third pipeline is communicated with the other end of the second pipeline and has the same diameter, and the other end of the third pipeline is in a variable-diameter shape; and
one end of the pipeline IV is communicated with the other end of the pipeline III and has the same diameter, the other end of the pipeline IV is a discharge end II communicated with the outside of the dissolved air tank, and the discharge end II discharges the micro-bubble dissolved air water;
the third pipeline comprises:
the first reducing section is connected with one end of the second pipeline far away from the first pipeline; and
the second reducing section is connected with one end of the first reducing section, which is far away from the second pipeline;
the first reducing section and the second reducing section are both folded and inclined towards the center, and the inclination of the first reducing section is larger than that of the second reducing section;
the tangential inlet is cut horizontally perpendicular to the corresponding sidewall of the dissolved air tank or obliquely upward to the corresponding sidewall of the dissolved air tank.
2. The microbubble dissolved air and water generator as defined in claim 1, wherein said tangential inlet II is either horizontally cut perpendicular to the corresponding side wall of said conduit II or obliquely cut downward to the corresponding side wall of said conduit II.
3. The microbubble dissolved air and water generator as set forth in claim 1, wherein a first converging chamber is isolated from the bottom of the dissolved air tank, the tangential inlet is higher than the first converging chamber at the position of the dissolved air tank, all the second discharge ends are communicated with the first converging chamber, and the first converging chamber is provided with an output port.
4. The microbubble dissolved air and water generator as set forth in claim 1, wherein said dissolved air tank is provided with a first vent hole, said first vent hole being located at a position higher than a liquid level of a gas-liquid mixture in said dissolved air tank, and supplying air into said dissolved air tank through said vent hole.
5. The microbubble dissolved air and water generator as set forth in claim 1, wherein said dissolved air tank is provided with a second vent hole, said second vent hole being located at a position of said dissolved air tank higher than a liquid level of a gas-liquid mixture in said dissolved air tank, and excess gas overflowed from said first cyclone body through said second vent hole being discharged and returned for use.
6. The microbubble dissolved air and water generator as set forth in claim 1, wherein a second converging chamber is isolated from the top of said dissolved air tank, and all the first discharge ends are communicated with said second converging chamber, said second converging chamber being provided with a waste discharge port.
7. The microbubble dissolved air water generator as defined in claim 1, wherein said dissolved air tank comprises a dissolved air tank, an upper head and a lower head; the tangential inlet I is arranged on the dissolved air tank, the cyclone separation device is arranged in the dissolved air tank, the upper sealing head is of a hollow structure, all the discharge ends I are communicated with the upper sealing head, and the upper sealing head is provided with a waste discharge port; all the second discharge ends are communicated with the lower seal head, and the lower seal head is provided with an output port.
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| CN201910553248.3A CN110127798B (en) | 2019-06-25 | 2019-06-25 | Microbubble dissolved air water generating device |
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| CN110127798B true CN110127798B (en) | 2023-12-26 |
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| CN2652916Y (en) * | 2003-07-18 | 2004-11-03 | 清华紫光环保有限公司 | Swirl air dissolving device |
| KR100975366B1 (en) * | 2010-03-22 | 2010-08-11 | 주식회사 디에스21 | Waste water treatment facilities having micro bubble generator |
| JP2015098021A (en) * | 2013-10-15 | 2015-05-28 | 株式会社竹村製作所 | Wastewater treatment apparatus |
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