CN210313617U

CN210313617U - Rotational flow air flotation equipment

Info

Publication number: CN210313617U
Application number: CN201920960326.7U
Authority: CN
Inventors: 李浩隆
Original assignee: Zhejiang Shengke Environmental Engineering Co ltd
Current assignee: Zhejiang Shengke Environmental Engineering Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-14
Anticipated expiration: 2029-06-25

Abstract

The utility model relates to a whirl air supporting equipment in the air supporting solid-liquid separation equipment field. The rotational flow air floatation device comprises a rotational flow air floatation device. The cyclone air-float device comprises: a tank body; the spiral slag scraping device is used for scraping and collecting scum suspended on the liquid level in the tank body; the oil collecting cylinder is used for collecting scum scraped by the spiral scum scraping device; and the slag returning and removing device is positioned below the liquid level and is used for removing the slag returning of the scum block falling outside the oil receiving cylinder. The slag returning and removing device comprises a guide cylinder and a dissolved gas water releaser, wherein the guide cylinder is positioned below the oil collecting cylinder and used for collecting the scum blocks, and the dissolved gas water releaser releases micro-bubble dissolved gas water in the guide cylinder so as to dissolve the scum blocks to ensure that the scum formed by dissolution is gathered to the liquid level again due to rising. The utility model discloses a sediment remove device is returned in the setting for the dross piece is dissolved with the help of microbubble dissolved gas water, and the dross that forms because of dissolving realizes the dross and collects because of rising the liquid level of gathering again, therefore has improved the collection effect to the dross piece.

Description

Rotational flow air flotation equipment

Technical Field

The utility model relates to an air supporting solid-liquid separation equipment field especially relates to a whirl air supporting equipment.

Background

With the continuous development of the petroleum industry, most of oil fields currently exploited in China enter a high water-cut period, the water content of produced liquid of the oil fields sometimes reaches more than 90%, and a gas floatation device is usually adopted to carry out solid-liquid separation on light suspended matters in the extracted liquid.

The traditional air floatation device has the technical problems that oil and slag are difficult to collect, the water quality of discharged water is easy to decline due to the fact that a bubble adherend is damaged in the slag discharging process, when hydraulic plug flow or hydraulic overflow is adopted, the water content of discharged oil slag is high, in the air dissolving water generating technology matched with the air floatation device, the particle size of bubbles in the air dissolving water prepared by the existing jet type air dissolving water generating technology is large and uneven, the disturbance of the air dissolving water in the releasing process is large, the dirt accumulation inside a traditional air dissolving tank affects the action sensitivity of a liquid level switch.

SUMMERY OF THE UTILITY MODEL

To current technical problem, the utility model provides a whirl gas equipment, its collection that can effectively solve the dross piece in the dross is difficult technical problem.

The utility model discloses a following technical scheme realizes: a cyclonic air flotation apparatus comprising a cyclonic air flotation device, the cyclonic air flotation device comprising:

a tank body;

the spiral scum scraping device is used for scraping and collecting scum suspended on the liquid level in the tank body;

the oil collecting cylinder is used for collecting scum scraped by the spiral scum scraping device; and

the slag returning and removing device is positioned below the liquid level and is used for removing the slag returning of the scum block falling outside the oil receiving cylinder; the slag returning and removing device comprises a guide cylinder and a dissolved gas water releaser, wherein the guide cylinder is positioned below the oil collecting cylinder and used for collecting the scum block, and the dissolved gas water releaser is used for releasing microbubble dissolved gas water in the guide cylinder so as to dissolve the scum block to ensure that scum formed by dissolution is re-gathered to the liquid level due to rising.

Further, the rotational flow air flotation equipment also comprises a micro-bubble dissolved air water generating device for generating the micro-bubble dissolved air water; microbubble dissolved water gas generating device includes:

the gas dissolving device comprises a cylindrical gas dissolving tank which is vertically arranged, wherein a first tangential inlet which is cut from a corresponding side wall and communicated with the interior of the gas dissolving tank is formed in the side wall of the gas dissolving tank close to the bottom, and a gas-liquid mixed liquid is input into the first tangential inlet; and

the cyclone separation device comprises at least one cyclone separation tube assembly vertically arranged in the gas dissolving tank, and the side wall of each cyclone separation tube assembly is provided with a second tangential inlet which is cut from the corresponding side wall and communicated with the inside of the corresponding cyclone separation tube assembly;

wherein, the water pressure of the gas-liquid mixed liquid satisfies:

enabling the gas-liquid mixture to spirally ascend along the side wall of the dissolved air tank through the tangential inlet I to form a cyclone body I, wherein the cyclone body I is provided with a spiral vortex area and a vortex hole area located in the center of the vortex area, and a plurality of cyclone separation tube assemblies are erected on the vortex area;

and 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 through the cyclone separation tube assembly to form microbubble dissolved gas water which is then discharged to the cyclone air floatation device.

Further, the cyclone separation tube assembly sequentially comprises from top to bottom in the vertical direction:

one end of the pipeline I is a discharge end I 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 tangential inlet II is formed in the side wall of the second pipeline;

one end of the pipeline III is communicated with the other end of the pipeline II and has the same diameter, and the other end of the pipeline III is in a reducing shape; and

and one end of the pipeline IV is communicated with the other end of the pipeline III and has the same diameter, and the other end of the pipeline IV is a discharge end II communicated with the outside of the dissolved air tank.

Further, the third duct includes:

the first variable-diameter section is connected with one end, far away from the first pipeline, of the second pipeline; and

the second variable-diameter section is connected with one end, far away from the second pipeline, of the first variable-diameter section;

the first variable-diameter section and the second variable-diameter section are both inclined towards the center, and the inclination of the first variable-diameter section is greater than that of the second variable-diameter section.

Further, the tangential inlet is cut horizontally perpendicular to the corresponding side wall of the dissolved air tank or is cut obliquely upward to the corresponding side wall of the dissolved air tank;

and/or;

the second tangential inlet is horizontally cut in perpendicular to the corresponding side wall of the second pipeline or obliquely cut in a mode of inclining downwards to the corresponding side wall of the second pipeline.

Further, the tank body comprises an outer cylinder and an inner cylinder sleeved in the outer cylinder; a mixing area is formed between the inner cylinder and the outer cylinder; a second cyclone body spirally rising along the side wall of the inner barrel is input into the mixing area;

the spiral slag scraping device comprises a scraping plate, one end of the scraping plate is a scum pushing and collecting end, and the scraping plate is rotatably suspended at the top of the inner cylinder so that the scraping plate can rotate relative to the inner cylinder; the opposite end of the scraper is a scum scraping end and extends to the inner wall of the inner barrel, one side of the scraper facing the inner barrel extends below the liquid level in the inner barrel, the opposite side of the scraper back to the inner barrel is exposed outside the top of the inner barrel, one side of the scum scraping end facing the inner barrel is provided with a notch, and the rotational flow body flows into the inner barrel through the notch and forms the liquid level in the inner barrel; one side of the scum pushing and collecting end surface, which faces the bottom of the inner barrel, is an arc-shaped slope surface which inclines from the top direction of the scum pushing and collecting end to the bottom direction;

and one end of the oil collecting cylinder is opened, the end face of the oil collecting cylinder is provided with an overflow weir which is attached to the arc-shaped slope surface, and the other end of the oil collecting cylinder is also opened and is used for discharging collected scum out of the spiral cyclone air flotation device.

Furthermore, the scraper plate extends to the inner wall of the inner barrel in a spiral involute manner, or extends to the inner wall of the inner barrel in a linear manner, or extends to the inner wall of the inner barrel in an arc manner.

Furthermore, a tangential inlet III and a tangential inlet IV which are cut from the corresponding side walls and are communicated with the mixing zone are respectively arranged on the side wall of the outer cylinder close to the bottom, a gas-liquid mixed liquid is input through the tangential inlet III, and raw water is input through the tangential inlet IV; the tangential inlet III is positioned below the tangential inlet IV in the input direction, the flow velocity of the gas-liquid mixed liquid is greater than that of the raw water, and the gas-liquid mixed liquid and the raw water are mixed at a differential speed by means of flow velocity difference to form a spiral flow body II which spirally rises along the side wall of the inner barrel.

Furthermore, the water pressure of the gas-liquid mixed liquid and the raw water is increased in equal proportion, so that the rotational flow body II which flows into the inner barrel from the notch continues to rotate on the liquid surface, and the rotational flow direction is opposite to the rotation direction of the scraper.

Furthermore, a flexible scraping blade II which is contacted with the inner wall of the inner cylinder is arranged on the scum scraping and collecting end.

Further, the dissolved air water releaser is located in the draft tube and be annular tubulose to the confession is seted up to the pipe wall a plurality of through-holes that the microbubble dissolved air water exported.

The utility model has the advantages that:

1. the utility model discloses a sediment remove device is returned in the setting for the dross piece is dissolved with the help of microbubble dissolved gas water, and the dross that forms because of dissolving realizes the dross and collects because of rising the liquid level of gathering again, therefore has improved the collection effect to the dross piece. And scum blocks caused by the subsequent scum pushing and collecting of the scum piled on the scum pushing and collecting end also have good recollection effect.

2. The utility model discloses a sediment device is scraped to spiral, the scraper blade under the drive of driving machine with the whirl rivers opposite direction motion of whirl air supporting or not move, simultaneously at the effect of pushing away of flexible doctor-bar one and flexible doctor-bar two, can in time push the receipts oil section of thick bamboo with the oil slick that gathers after gathering around the receipts oil section of thick bamboo to make the oil slick follow aquatic quickly separating away, reach the effect that the oil extraction moisture content is low.

3. The utility model discloses flexible doctor-bar two in the spiral scum device is scraped, it can both remove the dross (can not flow automatically or the oil residue of overflow) that adheres on inner tube section of thick bamboo wall through spiral scraper blade skimming, realizes in time arranging sediment, not accumulating.

4. The utility model discloses a rotation rate of driving machine drive scraper blade is low, and is little to the disturbance of dross, reduces the broken probability of dross, simultaneously through returning sediment remove device, the dregs of fat that probably broken back when receiving the sediment falls into the aquatic downwards lift up the surface of water of floating again to in being pushed into by flexible doctor-bar one and receiving the oil drum, effectively solved the problem that the easy destruction bubble adherend of slag removal process arouses out water quality of water decline.

5. The utility model discloses a scraper blade is fit for the air supporting ware of different scales, is applied to and reforms transform current air supporting ware, can adjust the installation in restricted space, and the practicality is high.

6. The utility model discloses a tangential is intake and the extremely big whirl of rotational flow separation tube assembly formation speed gradient carries out the secondary cutting fragmentation to the bubble, reaches and dissolves gas efficiency and the bigger tolerance of taking of dissolving that the gas pitcher is higher than the tradition, and the gas that dissolves in the gas water of preparing removes the gas that has dissolved, still carries the micro-fine bubble of cutting fragmentation in a large number, has formed the super saturated gas water of dissolving.

7. The utility model discloses a whirl dissolves gas pitcher whirl screening separation technique, at the whirl in-process, the big bubble of gas-water mixture can be sheared fine bubble to dissolved gas water fine bubble's carrying volume has been increaseed.

8. The utility model discloses the holistic whirl structural design of whirl gas pitcher is rolled up at the whirl and is swept under the effect, and the jar inner wall can prevent effectively that the adhesion filth, even the filth of adhesion also can be rolled up when the start and sweep and clear away under the effect when shutting down, and density is than the filth (like oils) that water is little simultaneously, will be followed and dissolved the gas aquatic separation back and discharged along with big bubble.

The utility model discloses a whirl air supporting equipment is suitable for the occasion of various air supporting separations, especially oily sewage separation occasion, especially the separation that oily produced water of marine FPSO, platform got rid of oils.

Drawings

Fig. 1 is a functional block diagram between the microbubble dissolved air water generating device and the cyclone air flotation device of the cyclone air flotation device provided by the embodiment of the utility model.

Fig. 2 is an assembly diagram of a microbubble dissolved air water generating device of the rotational flow air flotation device provided by the embodiment of the present invention;

FIG. 3 is a general assembly view of the dissolved air vessel of FIG. 2;

FIG. 4 is a partially broken away view of the dissolved air tank of FIG. 3;

FIG. 5 is a cross-sectional view of the dissolved air tank of FIG. 3;

FIG. 6 is a partially broken away view of the cyclonic separating apparatus of FIG. 5;

FIG. 7 is a cross-sectional view of the cyclone tube assembly of FIG. 6;

FIG. 8 is a perspective exploded view of the jet mixer of FIG. 2;

fig. 9 is an assembly diagram of a cyclone air-float device of the cyclone air-float apparatus provided in the embodiment of the present invention;

FIG. 10 is a perspective view of the can body of FIG. 9 from one of its perspectives after removal of the outer sleeve;

FIG. 11 is an internal assembly view of the inner barrel of FIG. 10;

FIG. 12 is an exploded view of the components of FIG. 9;

FIG. 13 is a perspective view of the oil collection canister of FIG. 12;

FIG. 14 is a perspective view of the squeegee and flexible blade of FIG. 12 in combination;

FIG. 15 is a top view structural view of the squeegee of FIG. 14;

FIG. 16 is another top view structural view of the squeegee of FIG. 15;

fig. 17 is a further plan view of the squeegee of fig. 15.

Description of the main symbols:

11-dissolved air tank; 111-tangential inlet one; 112-a vent hole I; 113-vent two; 114-safety vent; 115-a sewage cleaning port; 116-a sewage draining outlet; 12-upper end enclosure; 121-a waste discharge port; 13-lower end enclosure; 131-an output port; 20-a cyclonic separation device; 21-a first hole plate; 22-pore plate II; 23-a cyclone tube assembly; 231-pipeline one; 232-pipe two; 2321-tangential inlet two; 233-pipeline three; 234-pipeline four; 24-a flow stabilizer; 30-a jet mixer; 31-a draft tube; 32-an accelerating tube; 321-a nozzle; 33-a throat; 34-a diffuser tube; 35-a drainage tube; 36-suction pipe; 40-supporting legs; 50-tank body; 51-an outer barrel; 511-tangential inlet three; 512-tangential inlet four; 52-inner cylinder; 60-oil collecting cylinder; 61-a slag discharging weir; 62-bracket one; 70-a spiral slag scraping device; 71-a driver; 72-a scraper; 721-a slicing plate; 722-reinforcing rib plates; 723-Stent two; 73-flexible doctor blade one; 80-return slag removing device; 81-dissolved gas water releaser; 82-a guide shell; and 90-a water collecting pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1, fig. 1 is a functional block diagram between a microbubble dissolved air water generating device and a cyclone air flotation device of a cyclone air flotation device according to an embodiment of the present invention. The rotational flow air flotation equipment comprises a rotational flow air flotation device and a micro-bubble dissolved air water generating device. The microbubble gas-dissolving water generating system is used for generating microbubble gas-dissolving water, and the microbubble gas-dissolving water in the scheme means that bubbles in water exist in a micron-scale unit and a nanometer-scale unit in a mixed mode, and the bubbles can be observed by naked eyes at ordinary times when the bubbles exist in a diameter larger than 50 microns. When a large amount of bubbles exist in water, the pure water solution can be observed to be milky due to the refraction effect of light, and the pure water solution is commonly called as milk. The cyclone air flotation device is used for collecting scum of gas-liquid mixed liquid, and when the scum is collected, the scum block in the scum can be dissolved by micro-bubble dissolved air water, so that the scum dissolved by the scum block can be collected again.

Referring to fig. 2, fig. 2 is an assembly diagram of a microbubble dissolved air water generating device of a rotational flow air flotation device according to an embodiment of the present invention. The microbubble dissolved gas water generating device comprises a dissolved gas tank 11 and a cyclone separation device 20. The microbubble gas-dissolving water generating system is used for generating microbubble gas-dissolving water, and the microbubble gas-dissolving water in the scheme means that bubbles in water exist in a micron-scale unit and a nanometer-scale unit in a mixed mode, and the bubbles can be observed by naked eyes at ordinary times when the bubbles exist in a diameter larger than 50 microns. When a large amount of bubbles exist in water, the pure water solution can be observed to be milky due to the refraction effect of light, and the pure water solution is commonly called as milk.

Referring to fig. 3, fig. 3 is a general assembly diagram of the dissolved air tank in fig. 2. The dissolved air tank 11 comprises an upper seal head 12 and a lower seal head 13.

The dissolved air tank 11 is a cylindrical body having a cylindrical shape as a whole and a hollow interior. The dissolved air tank 11 in the present embodiment is of a vertical structure. The side wall of the dissolved air tank 11 close to the bottom is provided with a first tangential inlet 111 which is cut from the corresponding side wall and communicated with the inside of the dissolved air tank 11, and the first tangential inlet 111 supplies air-liquid mixed liquid to be input, the air-liquid mixed liquid input in the embodiment can be realized through a jet mixer or an air-liquid mixing pump, so that the air-dissolved water introduced into the dissolved air tank 11 through the first tangential inlet 111 spirally rises on the side wall of the dissolved air tank 11 to form a first cyclone body

In the embodiment, the cyclone body has a spiral vortex region and a vortex eye region positioned in the center of the vortex region. The excessive gas (large bubbles with larger diameter) overflows from the first cyclone body through the second vent hole 113 and enters the middle gas phase space in the gas dissolving tank 11 (the area occupied by the gas in the gas dissolving tank 11 is defined as the gas phase space). The first tangential inlet 111 is horizontally cut in perpendicular to the corresponding side wall of the dissolved air tank 11 or obliquely cut in upward inclined to the corresponding side wall of the dissolved air tank 11, and workers can select the first tangential inlet according to the product processing requirements.

Referring to fig. 8, fig. 8 is a perspective exploded view of the jet mixer of fig. 2. When the jet flow mixer is used as the input device of the gas-liquid mixed liquid in the embodiment, the output end of the jet flow mixer is connected to the tangential inlet I111. And this jet mixer sets up in dissolving the outside of gas pitcher 11, can solve traditional jet mixer and arrange in when dissolving gas pitcher 11 inside, inconvenient to carry out abluent problem to the dirty stifled position of scaling of jet mixer. The jet mixer is used for injecting the gas-liquid mixed liquid into the dissolved gas tank 10.

The jet mixer mainly comprises a draft tube 31, an accelerating tube 32, a throat 33, a diffusing tube 34, a draft tube 35 and an air suction tube 36. The guide pipe 31, the accelerating pipe 32, the throat 33, the diffusion pipe 34 and the drainage pipe 35 are connected in sequence. The accelerating tube 32 is provided with a nozzle 321 at an end facing the throat 33, and the nozzle 321 extends into the throat 33. An air inlet cavity is formed between the nozzle 321 and the inner wall of the throat 33. The air outlet end of the air suction pipe 36 is communicated with the air inlet cavity; and the air inlet end of the air suction pipe 36 is communicated with a second vent hole 113 on the dissolved air tank 10. The air in the air inlet cavity enters from the air holes on the nozzle and is mixed with the high-pressure water flow. The water inlet of honeycomb duct can be connected with external water supply installation through the ring flange, and the water supply installation in this embodiment can select to be the water pump. And the pumping pressure range of the water pump is 0.3-0.6 Mpa.

The jet mixer thus works in the following way: the working water pumped into the draft tube 31 by the water pump is ejected at high speed when flowing to the nozzle 321 of the acceleration tube 32, and forms a negative pressure in the surrounding air chamber to suck a large amount of air provided by the air suction tube 36. The periphery of the high-speed water column is wrapped with a large amount of air and rushes into the throat 33 at high speed, the air and the water are mixed violently in the front half section of the throat 33 and cut into micro bubbles, the air is close to atomization in the rear half section (the air is dissolved into the water at the highest efficiency), then the air which flows through the diffusion tube 34 and is atomized in the drainage tube 35 quickly dissolves into the water to complete the dissolving process, and the supersaturated dissolved air water is formed and then flows through the tangential inlet I111 to be introduced into the dissolved air tank 10.

Meanwhile, the gas-liquid mixed liquid is injected into the dissolved air tank 11 in all directions through the tangential inlet, and the effect of sweeping the inner wall of the mixed cavity of the dissolved air tank 10 is achieved, so that the dissolved air tank 11 is kept clean all the time, and the swept dirt flows out of the dissolved air tank 10 along with the dissolved air.

The dissolved air tank 11 positioned at the top of the tangential inlet I111 is provided with a vent hole I112, and the height of the vent hole I112 in the dissolved air tank 10 is higher than the liquid level of the gas-liquid mixed liquid in the dissolved air tank 10. The first vent 112 may be used to replenish the interior of the dissolved air tank 10. The first vent hole 112 is connected with an external air pump through an air supply pipe. And a liquid level switch is arranged on the dissolved air tank 11 on one side of the first vent hole 112, and the liquid level switch can be a common liquid level float switch.

Since the fluid in the gas dissolving tank 10 carries away the gas in the gas dissolving tank 11, the gas needs to be supplemented to maintain the continuous operation in the gas dissolving tank 10, so that the upper gas phase space in the gas dissolving tank 11 is kept at a proper volume (height). The gas supplementing pipe of the gas dissolving tank is provided with a gas supplementing electromagnetic valve, when the liquid level switch is a low-level signal, the gas phase volume is large enough, and gas supplementing is not needed, and the electromagnetic valve is closed at the moment; when the liquid level is high, the dissolved gas is taken out of the dissolved gas tank 11 after being dissolved by the water body, so that the gas amount in the dissolved gas tank 11 is reduced, and after the electromagnetic valve is opened, the external air pump pumps the air into the tank body 10 for supplementing the air. The air source pressure generated by the air pump in the embodiment is generally 0.1-0.3 MPa higher than the pressure in the dissolved air tank 10. Thereby the water pressure of the gas-liquid mixed liquid meets the following requirements:

(1) the gas-liquid mixture can spirally rise along the side wall of the dissolved air tank 10 through the tangential inlet I111 to form a first cyclone body, the first cyclone body is provided with a spiral vortex area and a vortex eye area positioned at the center of the vortex area, the plurality of cyclone separation tube assemblies 23 are vertically arranged in the vortex area, and the plurality of cyclone separation tube assemblies 23 are uniformly distributed in the vortex area in an annular mode.

(2) After the cyclone body rises to the tangential inlet II 2321, part of the gas-liquid mixed liquid enters the inner cyclone separation tube assembly 23 through the tangential inlet II 2321, and spirally descends through the cyclone separation tube assembly 23 to form micro-bubble dissolved gas water which is then discharged to the tangential inlet III 511 and the dissolved gas water releaser 81.

Therefore, the utility model discloses can high-efficient oil recovery receive the sediment and possess higher scrubbing rate simultaneously, can reduce the moisture content of the sediment of discharging oil when improving water quality of water. The technical problems that the oil and slag are difficult to collect and the water quality of discharged water is reduced due to the fact that bubble adherends are easy to damage in the slag discharging process of a traditional air floatation device are solved, and the water content of discharged oil slag is high when hydraulic plug flow or hydraulic overflow is adopted are solved.

A second vent hole 113 and a safe discharge port 114 are arranged on the dissolved air tank 11 at a position close to the upper seal head 12. The second air vent 113 and the safe discharge port are both positioned above the liquid level of the gas-liquid mixed liquid, the second air vent 113 is connected with the jet flow mixer through the air suction pipe, and redundant gas overflowing from the first cyclone body in the dissolved gas tank 11 enters the jet flow mixer for cyclic suction and utilization after passing through the second air vent 113 and a pipeline. The safety discharge port 114 is provided with a manual valve which can guide the flow of the overhigh liquid level in the dissolved air tank 11 and ensure that the liquid level in the dissolved air tank 11 is always in a normal state.

A sewage cleaning port 115 and a sewage draining port 116 are arranged on the dissolved air tank 11 at positions close to the lower end enclosure 13, and manual valves are respectively arranged on the sewage cleaning port 115 and the sewage draining port 116. The maintenance personnel can clean the interior of the dissolved air tank 11 by injecting cleaning liquid into the sewage cleaning port 115, and discharge pollutants generated after cleaning in the dissolved air tank 11 through the sewage discharge port 116.

In this embodiment, a support (not shown) may be further installed on the dissolved air tank 11, so that the dissolved air tank 10 is better supported on the ground.

Referring to fig. 4, fig. 4 is a partially broken away view of the dissolved air tank of fig. 3. The upper end enclosure 12 is a semi-spherical cover in this embodiment, and has a hollow structure. In other embodiments, the upper end enclosure 12 may also be an overall conical cover body, and may also be other cover body structures as long as the adaptability between the upper end enclosure and the dissolved air tank 11 is not affected.

The upper seal head 12 is arranged on the dissolved air tank 11. In this embodiment, the upper end enclosure 12 and the dissolved air tank 11 may be connected by a flange, and a sealing structure is provided at a joint of the upper end enclosure and the dissolved air tank 11 to ensure airtightness 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, and other connection manners may be used as long as the airtightness and connection stability between the upper end enclosure 12 and the dissolved air tank 11 are not affected.

The upper end enclosure 12 is provided with a waste discharge port 121. The number of the waste discharge ports 121 is set to one in the present embodiment, and the number of the waste discharge ports 121 may be set to a plurality in other embodiments. The waste discharge port 121 can be disposed at the middle of the top end of the upper end enclosure 12 or at the periphery of the top of the upper end enclosure 12.

Referring to fig. 5, fig. 5 is a cross-sectional view of the dissolved air tank in fig. 3. The lower end enclosure 13 is a cover body in a semi-spherical shape as a whole in this embodiment, and has a hollow structure. In other embodiments, the lower end enclosure 13 may also be a cover body with a conical shape as a whole, and may also be of other cover body structures as long as the adaptability between the lower end enclosure and the dissolved air tank 11 is not affected.

The lower end enclosure 13 is arranged at one end of the dissolved air tank 11 far away from the upper end enclosure 12. In the embodiment, the lower head 13 and the dissolved air tank 11 can be sleeved by sealing, and a sealing structure is arranged at the joint of the lower head and the dissolved air tank 11 to ensure the air tightness in the dissolved air tank 11. In other embodiments, the lower end enclosure 13 and the gas dissolving tank 11 may be fixed by welding, and other connection manners may be used as long as the airtightness and connection stability between the lower end enclosure 13 and the gas dissolving tank 11 are not affected.

The lower head 13 is provided with an output port 131, and the number of the output ports 131 is one in this embodiment. The position of the output port 131 may be in the middle of the bottom end of the lower sealing head 13 or on the periphery of the bottom of the lower sealing head 13.

Referring to fig. 6, fig. 6 is a partially broken away view of the cyclonic separating apparatus of fig. 5. The cyclone separation device 20 comprises a cyclone separation pipe assembly 23 vertically arranged in the gas dissolving tank, a first orifice plate 21, a second orifice plate 22 and a flow stabilizing plate 24.

The first orifice plate 21 is a plate body which is circular as a whole, and in other embodiments, the first orifice plate 21 may also be a plate body which is elliptical as a whole, and may also be other shapes as long as it matches the size and shape of the dissolved air tank 11. The first orifice plate 21 is accommodated in the dissolved air tank 11 at the bottom of the upper end enclosure 12, and the first orifice plate 21 and the dissolved air tank 11 are fixed in a sealing welding mode. Therefore, a second confluence cavity is formed between the first orifice plate 21 and the upper end enclosure 12 to isolate the top of the dissolved air tank 10, and the second confluence cavity is communicated with the waste discharge port 121.

The first orifice plate 21 is provided with at least one jack, and the cyclone separation tube assembly 23 penetrates through the jacks on the first orifice plate 21, so that the discharge end of the first pipeline 231 in the cyclone separation tube assembly 23 is communicated with the second confluence cavity. The number of the first holes in the first orifice plate 21 is the same as the number of the first conduits 231 in the cyclone tube assembly 23.

The second orifice plate 22 is a plate body having a circular shape as a whole, and in other embodiments, the second orifice plate 22 may also be a plate body having an oval shape as a whole, and may also have other shapes as long as it matches the size and shape of the dissolved air tank 11. The second orifice plate 22 is accommodated in the dissolved air tank 11 at the bottom of the first orifice plate 21, and the second orifice plate 22 and the dissolved air tank 11 are fixed in a sealing welding mode. Therefore, a first confluence cavity is formed between the second orifice plate 22 and the lower end enclosure 13 to isolate the bottom of the gas dissolving tank 10, and the first confluence cavity is communicated with the output port 131.

At least one jack is arranged on the second orifice plate 22, the number of the jacks of the first orifice plate 21 is the same as that of the jacks of the second orifice plate 22, and a fourth pipeline 234 in the cyclone separation pipe assembly 23 penetrates through the jacks on the second orifice plate 22 to enable a discharge end two on the cyclone separation pipe assembly to be communicated with the first confluence cavity. The number of the jacks on the second orifice plate 22 in this embodiment is consistent with the number of the fourth conduit 234 in the cyclone tube assembly 23.

In this embodiment, the first orifice plate 21 and the second orifice plate 22 can effectively fix both ends of each cyclone tube assembly 23, and the number of the cyclone tube assemblies 23 may be one or more. If the number of the cyclone separation tube assemblies 23 is multiple, the plurality of cyclone separation tube assemblies 23 are distributed at equal intervals in the circumferential direction between the first orifice plate 21 and the second orifice plate 22, so that the plurality of cyclone separation tube assemblies 23 are erected in the vortex region of the first cyclone body.

Referring to fig. 7, fig. 7 is a cross-sectional view of the cyclone tube assembly of fig. 6. The cyclone tube assembly 23 includes a first pipe 231, a second pipe 232, a third pipe 233, and a fourth pipe 234 in order from the top down in the vertical direction.

The first pipe 231 is an elongated tubular body with a constant inner diameter, and one end of the first pipe 231 may be a discharge end that is communicated with the outside of the gas dissolving tank 10. The other end of the first pipe 231 is communicated with one end of the second pipe 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 fixed connection position of the first pipe 231 and the second pipe 232 may be fixed by welding, and other connection manners may be used as long as the sealing property of the connection position of the first pipe 231 and the second pipe 232 is not affected.

The end part of the first pipe 231, which is far away from the second pipe 232, penetrates through the first perforated plate 21 and then is communicated with the second confluence cavity. The first pipe 231 can collect the large bubbles and the pollutants with the density less than that of water in the center of the fluid in the second confluence cavity and discharge the large bubbles and the pollutants out of the dissolved air tank 11 through the waste discharge port 121.

The second pipe 232 is a pipe body with a rectangular cross section. One end of the second pipe 232 is communicated with the other end of the first pipe, and the side wall of the second pipe 232 is provided with a second tangential inlet 2321 which is cut into from the corresponding side wall and communicated with the inside of the second pipe 232. And part of the gas-liquid mixed liquid rising to the second pipeline 232 enters the second pipeline 232 through the second tangential inlet 2321 and rotates downwards under the action of pressure to form fluid. In the process, the second tangential inlet 2321 has a tangential force on the large bubbles in the first swirling fluid, and cuts and crushes part of the large bubbles in the gas-liquid mixed liquid into fine bubbles which then enter the second pipeline 232. The second tangential inlet 2321 is cut horizontally perpendicular to the corresponding side wall of the second pipe 232 or obliquely downwards inclined to the corresponding side wall of the second pipe 232, and workers can select the cutting according to the 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 fluid flows into the third pipe 233, the fluid is gradually accelerated in rotation, so that the remaining large bubbles and the contaminants having a density lower than that of water are separated from the fluid by the centripetal force and migrate toward the center.

The other end of the pipeline III 233 is in a reducing shape. Duct three 233 includes a tapered section one 233a and a tapered section two 233 b. The first variable-diameter section 233a is a pipe body with a short frustum-shaped section, and the inner diameter of the first variable-diameter section 233a is inclined toward the center. One end of the first variable-diameter section 233a is communicated with the other end of the second pipeline 232 and is in the same diameter, the first variable-diameter section 233a and the second pipeline 232 are in sealing sleeve joint in the embodiment, and the first variable-diameter section 233a and the second pipeline 232 can be in sealing welding in other embodiments, and other connecting modes can be adopted as long as the stability of communication between the first variable-diameter section 233a and the second pipeline 232 is not affected.

The second variable-diameter section 233b is a pipe body with a long frustum-shaped section, and the inner diameter of the second variable-diameter section 233b is inclined toward the center. One end of the second variable-diameter section 233b is connected to the other end of the first variable-diameter section 233 a. In this embodiment, the second variable-diameter section 233b and the first variable-diameter section 233a are welded in a sealing manner, and in other embodiments, the second variable-diameter section 233b and the first variable-diameter section 233a may be sleeved in a sealing manner, or may be connected in other manners as long as the stability of communication between the second variable-diameter section 233b and the first variable-diameter section 233a is not affected.

In this embodiment, the inclination of the first variable diameter section 233a is greater than that of the second variable diameter section 233b, so that the flow passage area of the second variable diameter section 233b is narrower than that of the first variable diameter section 233 a. When the fluid flows into the accelerating section 332a from the second pipe 232, the fluid has a higher rotational speed, and because the area of the flow passage constriction is reduced, oil drops and large bubbles which are driven by the fluid and have a larger difference from the water density are gathered towards the center of the swirling flow field under the action of centripetal force.

Conduit four 234 is an elongated tubular body of uniform internal diameter. One end of the fourth pipeline 234 is communicated with the other end of the second variable-diameter section 233b of the third pipeline 233 and has the same diameter. In this embodiment, the pipe four 234 and the variable-diameter section two 233b are welded in a sealing manner, and in other embodiments, the pipe four 234 and the variable-diameter section two 233b may be sleeved in a sealing manner, or may be connected in other manners as long as the connection stability between the pipe four 234 and the variable-diameter section two 233b is not affected.

The other end of the fourth pipe 234 penetrates through the lower orifice plate 32 and is communicated with the first confluence cavity. The first pipeline 234 can collect the large bubbles and the pollutants with the density less than that of water in the center of the fluid in the second confluence cavity, discharge the large bubbles and the pollutants from the waste discharge port 121 to the dissolved air tank 11, and input gas-liquid mixed liquid to the tangential inlet III 511 of the cyclone air flotation device, and simultaneously input dissolved air water to the dissolved air water releaser 81.

Therefore, when the fluid flows through the third pipe 233, the center of the swirling flow field is compressed, the volume is reduced, a reaction force is formed, and oil drops and residual large bubbles in the center part are driven to move in the opposite direction and are discharged to the second confluence chamber through the first pipe 231, and then the oil drops and the residual large bubbles are discharged from the dissolved air tank 10 through the waste discharge port 121. Meanwhile, the dissolved air water carrying the micro-bubbles approaches a homogeneous system, continues to flow downwards through the fourth pipe 234 to the first confluence cavity, and flows out through the output port 131. The number of cyclone tube assemblies 23, or different cyclone tube size specifications, can be selected by the operator depending on the amount of water.

In order to prevent that the whirl gas-liquid mixture that the tangential got into dissolves the gas pitcher from causing the disturbance to the jar interior liquid level in this embodiment, influence liquid level switch's detection accuracy, the whirl pipe water inlet upper portion certain distance is provided with the stabilizer 24 in the gas pitcher specially.

The flow stabilizer 24 is a circular plate, and in other embodiments, the flow stabilizer 24 may also be an oval plate 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 flow stabilizer 24 and the inner wall of the dissolved air tank 11 to allow water to pass through), or may have other shapes.

In this embodiment, the flow stabilizer 24 is inserted and fixed on the first pipe 231 between the first orifice plate 21 and the second orifice plate 22. At least one insertion hole is formed on the flow stabilizer 24. In this embodiment, the number of the insertion holes on the flow stabilizer 24 is the same as that of the cyclone tube assembly 23, and the first pipe 231 in the cyclone tube assembly 23 is vertically inserted into the insertion holes of the flow stabilizer 24. In addition, the stabilizer 24 is provided with at least one airflow hole.

Therefore, an unblocked fluid channel is formed in the dissolved air tank 11 at the upper part and the lower part of the stabilizing plate 24, water mainly flows between the outer side of the stabilizing plate 24 and the inner wall of the dissolved air tank 11, and the airflow hole at the inner side of the stabilizing plate 24 is mainly used for collecting light phase (particularly large bubbles) at the center of the swirling flow field to flow upwards to the vent hole II 113 and then is sucked and utilized by the jet mixer through the air suction pipe. And the flow stabilizing plate 24 has an energy dissipation effect, so that the disturbance of the rotational flow body to the liquid level switch can be weakened, the liquid level is kept in a stable state, and the detection accuracy of the liquid level switch is facilitated.

The utility model discloses both can make super saturated dissolved air water, can separate out the big bubble again, make the even fine bubble water of particle diameter, can also roll up and sweep the clean jar inner wall to separation density is less than the oil pollutant of water. In the dissolved air water generation technology matched with air floatation equipment, the particle size of bubbles in the dissolved air water prepared by the existing jet type dissolved air water generation technology is thick and uneven, so that the disturbance of the dissolved air water in the release process is large, and the pollution in the traditional dissolved air tank influences the action sensitivity of a liquid level switch.

Referring to fig. 9, fig. 9 is an assembly diagram of a cyclone air-float device of a cyclone air-float apparatus according to an embodiment of the present invention. The spiral rotational flow air flotation device comprises a tank body 50, an oil collecting cylinder 60, a spiral slag scraping device 70, a return slag removing device 80 and a water collecting pipe 90.

The can 50 includes an outer cylinder 51 and an inner cylinder 52. The tank 50 may be erected on the ground or laid on the ground, and in this embodiment, the tank 50 is erected on the ground. The tank 50 is supported on the ground by means of support members, such as three support legs 40 at the bottom of the outer tub 51 in fig. 9.

The outer cylinder 51 is a cylindrical body having a cylindrical shape as a whole and a hollow interior. Two opposite ports of the outer cylinder 51 can be respectively covered by arranging sealing heads. And the two seal heads can be connected with each other through a flange or fixed by welding. The side wall of the outer cylinder 51 close to the bottom is provided with a tangential inlet three 511 and a tangential inlet four 512 which are cut from the corresponding side wall and are communicated with the inside of the outer cylinder 51. The third tangential inlet 511 is used for inputting a gas-liquid mixed liquid, and the fourth tangential inlet 512 is used for inputting raw water. The gas-liquid mixed liquid in this embodiment is gas-dissolved water with a large number of microbubbles, and the gas-dissolved water may be input by using a jet mixer or a gas-liquid mixing pump, and the raw water in this embodiment is added with a human flocculant and may be input by using a water pump.

The tangential inlet three 511 is at a lower elevation on the outer barrel 51 than the tangential inlet four 512. The third tangential inlet 511 and the fourth tangential inlet 512 can be horizontally arranged along the side wall vertical to the outer cylinder 51, and can also be obliquely arranged on the side wall of the outer cylinder 51 in an upward direction.

Because the air flotation separation needs stable hydraulic conditions, the dissolved air water and the raw water need to be quickly mixed and uniformly mixed when being mixed, contacted and adhered. In this embodiment, the tangential inlet third 511 and the tangential inlet fourth 512 may be arranged at any angle in the horizontal direction, the centers of the inlets of the two tangential inlets form an included angle of 90 degrees in the orthographic projection direction of the top of the outer cylinder 51, and the tangential inlet third 511 for dissolved gas water is generally arranged at the rear side of the tangential inlet fourth 512 for raw water.

In this embodiment, a liquid level meter interface for displaying an internal liquid level on line, such as a magnetic flip plate liquid level, may be disposed on the outer wall of the outer cylinder 51, the upper interface thereof is disposed on the upper portion of the outer cylinder 51, and the lower interface thereof may be disposed on the lower side of the outer cylinder 51 or may be led out at the end socket. In this embodiment, the end socket at the top of the outer cylinder 51 is a flat plate structure, and if the tank body 50 works under pressure, the end socket at the top of the outer cylinder 51 can also be an elliptical end socket or an end socket structure with other shapes.

Referring to fig. 10, fig. 10 is a schematic perspective view of the can body of fig. 9 from one of the viewing angles after the outer cylinder is removed. The inner cylinder 52 is a cylindrical body having a cylindrical lower part and a tapered upper part, and is hollow inside. The inner cylinder 52 is sleeved in the outer cylinder 51. An annular mixing zone is formed between the outer cylinder 51 and the inner cylinder 52. In order to better position the orientation relationship between the outer cylinder 51 and the inner cylinder 52, in the present embodiment, a spacer ring is fixed on the bottom wall of the outer cylinder 51, the inner cylinder 52 is positioned in the outer cylinder 51 through the spacer ring, and the positioning between the inner cylinder 52 and the outer cylinder 51 can be realized by inserting the inner cylinder 52 on the spacer ring. In this embodiment, the upper portion of the inner cylinder 52 is in a truncated cone shape and is designed to be reduced in size for the upper opening, so that the cross-sectional area of the swirling flow body II can be increased, and the upward speed and the swirling speed are both slowly reduced.

In this embodiment, when the gas-liquid mixture and the raw water enter the mixing region between the outer cylinder 51 and the inner cylinder 52 through the tangential inlet three 511 and the tangential inlet two 112, respectively, and flow upward in the mixing region in a rotating manner, a second swirling body is formed. The flow velocity of the dissolved air water is larger than that of the raw water, and the dissolved air water inlet is lower than that of the raw water inlet, so the dissolved air water plays a role in pushing the raw water, the dissolved air water is quickly mixed with the raw water due to different velocity differences at the initial stage of the rotational flow, micro bubbles in the dissolved air water are quickly dispersed in the rotational flow body II, the bubbles are quickly adhered to the surfaces of pollutants such as oil drops, flocculation and the like, and an adhesion aggregate with the density smaller than that of water is formed and moves upwards along with the rotating water flow. At the top of the mixing zone, the second cyclone body will cross the outer wall of the inner barrel 52 and enter the separation zone (the top region inside the inner barrel 52 is defined as the separation zone).

The height difference between the upper edge of the inner cylinder 52 and the operating liquid level in the air floatation device can be designed to be equal to or larger than the width of the mixing area in the top orthographic projection direction of the outer cylinder 51 and the inner cylinder 52, namely, the water flow crosses the upper edge of the inner cylinder 52 from the mixing area, the flow passage area cannot be reduced when entering the separation area, the flow speed cannot be obviously changed, the flow speed is gradually reduced, and the separation area can be favorably and stably entered. The water entering the separation area is in a weak rotational flow state with low flow speed due to the reduction of the flow speed, and turbulence can not be caused. And the surface area of the junction of the top of the annular mixing area and the separation area is larger than that of the separation area, so that the surface load of the air floatation device is reduced. Because the juncture of the top of the annular mixing area and the separation area is also the rotary skimming range of the scraper 72, scum accumulation can not be caused in the area, and the problem that the scum accumulation is difficult or can not be eliminated in the air flotation mixing area or the called water inlet area of the prior utility model is solved.

Referring to fig. 11, fig. 11 is an internal assembly view of the inner barrel of fig. 10. The oil collection tube 60 is a hollow tube having a cylindrical upper part and a tapered lower part, and the axis of the oil collection tube 60 is parallel to the axis of the tank 50. The oil collection barrel 60 is concentrically housed within the inner barrel 52 near the top. The other end of the oil collecting cylinder is also provided with a gap for discharging the collected scum out of the cyclone air flotation device, in the embodiment, the gap at the other end of the oil collecting cylinder 60 is an oil outlet, and the oil outlet is communicated with the outside of the tank body 50 through a first pipeline.

Referring to fig. 13, fig. 13 is a perspective view of the oil collecting cylinder in fig. 12. The oil inlet of the oil collecting cylinder 60 extends towards the center and then inclines upwards to form a slag discharge weir 61, the gradient range of the slag discharge weir 61 is ten degrees to fifteen degrees, and the top of the slag discharge weir 61 in the inner cylinder 52 is kept above the liquid level. Because the central oil collecting cylinder 60 is provided with the slag discharging weir 61 with the gradient ranging from ten degrees to fifteen degrees at the oil inlet, the gradient of the slag discharging weir 61 is generally thirteen degrees, and the slag discharging weir 61 and the scraper 72 attached with the slag discharging weir 61 generate a flow pushing effect, the operating liquid level of the air floatation device can be controlled to be lower than the slag discharging weir 61 of the oil collecting cylinder 60, namely, water can not or rarely be discharged into the oil collecting cylinder 60 due to overflow or flow pushing during slag discharging.

Through the structural design of the upper deslagging weir 61 of the oil collection cylinder 60 in the embodiment, the thickness of an oil residue layer in the separation area can be better controlled, the liquid level height adjustment in a wider range can be realized, the liquid level height change caused by the sharp change of the water volume can be tolerated, and the phenomenon that a large amount of clear water overflows to enter the oil collection cylinder 60 or the oil residue cannot be discharged due to low liquid level is avoided. The thickness of the slag layer can be controlled by the rotation driving speed of the spiral oil slag scraping device 30 or the start-stop time interval, the liquid level height adjustment and other measures. Therefore, the content rate of the discharged slag is greatly reduced, and the subsequent containing and processing load of the downstream is reduced.

The water pressure of the gas-liquid mixed liquid and the water pressure of the raw water are increased in equal proportion, so that the cyclone body II which flows into the inner barrel 52 from the gap (not marked) continuously swirls on the liquid surface to form the cyclone body II, the swirling direction is opposite to the rotating direction of the scraper 72, and the scum which is positioned on the liquid surface and close to the inner wall of the inner barrel 52 moves along the inner side of the scraper 72, is accumulated to the slag discharge weir 61 of the oil collection barrel 60 and then enters the oil collection barrel 60 to be collected.

Referring to fig. 12, fig. 12 is an exploded view of the components of fig. 9. The oil collection barrel 60 is supported on the inner barrel 52 by a bracket one 62. In this embodiment, the first support 62 is cross-shaped, the end of the first support 62 away from the cross junction is welded and fixed to the inner wall of the inner cylinder 52, and the cross junction of the first support 62 is sleeved on the first pipe body. An oil outlet of the oil collecting cylinder 60 is communicated with an oil inlet of the first pipe body. The first support 62 can fix the oil collecting cylinder 60 and the inner cylinder 52, so that the rigidity and the stability are improved.

The spiral slag scraping device 70 comprises a driving machine 71, a scraping plate 72 and a flexible scraping blade 73.

The output shaft of the driving machine 71 penetrates the outer cylinder 51 and extends to the inner cylinder 52, and then a coupling is connected. The driving machine 71 in this embodiment may be electrically driven, pneumatically driven, or hydraulically driven. The drive motor 71 may be of a selected rotational speed or may be a variable speed mechanism. The driving machine 71 is mounted on the top of the outer cylinder 51, and a bracket with an intermediate bearing and a shaft sealing structure is arranged between the driving machine and the outer cylinder 51, so that the output shaft is prevented from swinging during rotation, and the concentric and stable operation is kept. The shaft sealing structure is arranged when the air floatation device needs to work in a sealing mode or work under pressure, and the leakage of the air floatation device in an internal-external communication mode is prevented. The sealing structure is a packing seal or a mechanical seal. The drive motor 71 can be operated continuously or periodically. When the tank works under pressure (10-300 KpaG), a packing sealing or mechanical sealing mechanism is adopted between the output shaft of the driving machine 71 and the end socket at the top of the outer cylinder 51.

Referring to fig. 15, fig. 15 is a top view structural diagram of the squeegee shown in fig. 14. One end of the scraper 72 is a scum pushing and collecting end (not shown) and is rotatably suspended from the top of the inner drum 52 such that the scraper 72 can rotate relative to the inner drum 52. The other end of the scraper 72 is a scum scraping end (not shown) and extends to 50-200 mm near the inner wall of the inner cylinder 52. One end of the scum pushing and collecting end of the scraping plate 72, which is close to the output shaft of the driving machine 71, is connected with the output shaft extending to the inner cylinder 52. One side of the scraper 72 facing the inner cylinder 52 extends into the inner cylinder 52 below the liquid level, and the opposite side of the scraper 72 facing away from the inner cylinder 52 is exposed at the top of the inner cylinder 52. And defines that one side of the dross scraping end facing the inner wall of the inner cylinder 52 is the outer side of the scraper 72, and the inner side of the scraper 72 is the opposite side of the dross scraping end.

A gap (not shown) is formed in one side of the scum scraping and collecting end of the scraping plate 72 facing the inner cylinder 52, and an arc-shaped slope (not shown) which inclines from the top direction of the scum pushing and collecting end to the bottom direction of the scum pushing and collecting end is formed in one side of the scum pushing and collecting end facing the bottom of the inner cylinder 52. The scrapers 72 can push and gather the dross floating on the top of the inner drum 52 toward the center.

The scraper 72 is a spiral oil residue scraping plate when the driving machine 71 works, and when the driving machine 71 stops, the spiral scraper plays a spiral flow guiding role, so that the wastewater flowing in from the mixing area can form a spiral flow state along the plate belt and then is gathered near the central oil collecting cylinder 60. The scraper 72 of this embodiment may be made of stainless steel, and in other embodiments, the scraper 72 may be made of carbon steel or injection molded.

Referring to fig. 14, fig. 14 is a perspective view of the combination of the squeegee and the flexible blade of fig. 12. The scraper 72 is a one-piece unitary structure in this embodiment. The one-piece integral construction of the flight 72 can be adapted to newly constructed equipment or to an inner cylinder 52 into which a manhole (the top opening of the inner cylinder 52 being defined as the manhole) can be properly placed, thus eliminating the need for a secondary modification of the air float.

In other embodiments, the scraping plate 72 may also be a plate body with a segmented structure, and the plate body with the segmented and segmented structure may be assembled by segmentation and segmentation, so that most of the plate bodies are applied to the transformation of the existing air floatation device, and are installed in the limited space inside the existing air floatation device. The scraping plate 72 of the split-type split structure comprises a split plate 721, a connecting clamping plate (not shown), a reinforcing rib plate 722 and a second bracket 723.

The slicing plate 721 is a plate body having a curvature. In this embodiment, the plurality of the partition plates 721 are provided, and the plurality of the partition plates 721 are sequentially connected end to end from the top of the oil receiving cylinder 60 to the inner wall of the inner cylinder 52. Wherein, one end of one of the slicing plates 721 close to the oil collecting cylinder 60 is fixedly connected with the outer side of the coupler, the slicing plate 721 and the coupler are connected through screws in the embodiment, the slicing plate 721 and the coupler can be welded integrally in other embodiments, and other connection modes can be adopted as long as the stability of the connection between the slicing plate 721 and the coupler is not affected.

The notch is opened on the free end of one of the separating plates 721 closest to the inner wall of the inner cylinder 52, and the notch of the separating plate 721 can fit and cross over the upper edge of the inner cylinder 52 in this embodiment. Therefore, the oil residue pollutants which are positioned at the top of the mixing area and are about to cross the upper edge of the inner cylinder 52 can be pushed to the oil collecting cylinder 60, and the slag discharging efficiency is improved.

The stiffener 722 is a plate body with an overall elongated shape. Reinforcing rib plate 722 is laid on a plurality of slicing plates 721, reinforcing rib plate 722 and slicing plates 721 are perpendicular to each other, and one end of reinforcing rib plate 722 is connected with the shaft coupling. In this embodiment, the reinforcing rib plate 722 is connected with the coupler by screws, and in other embodiments, the reinforcing rib plate 722 and the coupler may be welded integrally, or may be connected in other manners as long as the stability of the connection between the reinforcing rib plate 722 and the coupler is not affected. The connection direction of the reinforcing rib plate 722 and the slicing plate 311 is kept consistent.

The second bracket 723 is an integrally elongated rod body. The number of the second brackets 723 is plural in this embodiment. The laying direction of the reinforcing rib plates at one ends of the second brackets 723 is arranged at the top of the reinforcing rib plate 722 at intervals, and the other ends of the second brackets 723 are crossed and fixed on the coupler. In this embodiment, the second bracket 723 and the reinforcing rib plate 722 may be welded integrally or screwed together, and the second bracket 723 and the coupler may be welded integrally or screwed together.

The number of the connecting clamp plates (not shown) is plural in the present embodiment, each connecting clamp plate is respectively disposed between two adjacent divided plates 721, and the connecting clamp plate functions to connect the two adjacent divided plates 721.

The scum scraping and collecting end extends to the inner wall of the inner barrel in a spiral involute manner, or extends to the inner wall of the inner barrel in a linear manner, or extends to the inner wall of the inner barrel in an arc manner. In other embodiments, the squeegees 72 can also be linear squeegees or arcuate squeegees. Referring to fig. 16, fig. 16 is another top view structural diagram of the squeegee shown in fig. 15. When the scrapers 72 are linear scrapers, the scrapers 72 are arranged tangentially to the periphery of the oil collecting cylinder 60, and the number of the scrapers 72 may be single or multiple according to the diameter of the tank 50. Referring to fig. 17, fig. 17 is a top view of the squeegee of fig. 15. When the scrapers 72 are arc-shaped scrapers, the number of the scrapers 72 is also determined by the diameter of the can 50, and may be single or plural. Other scraper structures are also possible as long as the scrapers 72 do not influence the flow guiding and gathering of the oil residue on the top of the inner cylinder 52.

The first flexible blade 73 is an irregularly shaped arc-shaped plate in this embodiment, which is made of a flexible material. The first flexible scraper 73 can be designed as a scum pushing and collecting end of the scraper 72, which is arranged at the bottom of the collecting center of the scraper 72, and the bottom end of the first flexible scraper 73 is provided with an arc-shaped inclined surface (not shown) capable of fitting the scum weir 61. The first flexible scraper 73 and the scraper 72 can be connected through screws. The bottom end of the first flexible scraper 73 close to the center of the inner cylinder 52 is attached to the slope surface of the slag discharge weir 61, and the bottom end of the first flexible scraper 73 far from the center of the inner cylinder 52 is attached to the outer side wall of the oil collection cylinder 60 at the bottom of the slag discharge weir 61. The first flexible scraper 73 is used for pushing the scum accumulated at the slag discharge weir 61 into the oil collection cylinder 60 along the slag discharge weir 61.

The second flexible scraping blade (not marked) is a plate body which is integrally arc-shaped. The second flexible scraper is arranged in the gap and can be attached to the inner wall of the inner cylinder 52. During slag scraping, the second flexible scraper can move synchronously along with the scraper 72 to scrape off floating oil slag attached to the inner wall of the inner cylinder 52.

Therefore, the scraping plate 72, the first flexible scraping plate 73 and the second flexible scraping plate are connected to form an operation radius covering the top of the whole air floatation device, and a slag scraping blind area does not exist.

One side of the scraper 72 facing the inner cylinder 52 extends into the inner cylinder 52 below the liquid level, and the opposite side of the scraper 72 facing away from the inner cylinder 52 is exposed at the top of the inner cylinder 52. The utility model discloses a degree of depth that the lower extreme of scraper blade 72 stretched into under the operating liquid level can be 20mm to 500mm to this degree of depth can be through scraper blade 72 at the epaxial mounting height of above-mentioned driving machine 71 output in order to adjust. And the operation direction of the scraper 72 is opposite to the spiral rotation direction of the fluid at the top of the inner cylinder 52, so that the scum in the fluid can be collected in the oil collecting cylinder 60 along the inner side of the scraper 72 under the hydraulic pushing flow and then is discharged out of the tank body through a first pipeline (an oil discharge pipe).

The utility model discloses sediment device 70 is scraped to spiral of structure even the very big jar of body 50 of diameter, for example 5 meters, 10 meters, 20 meters diameter jar of body 50, through the scraper blade 72 of the burst structure of installation looks adaptation in the jar of body 50 that corresponds, can realize getting rid of fast of the interior dross of different diameter jar of bodies 50, so the utility model discloses the spiral of structure is scraped sediment device 70 and can be fit for in the air supporting ware of different scales.

Referring to fig. 11 and 12, the returned slag removing device 80 is accommodated in the inner cylinder 52 at the bottom of the oil receiving cylinder 60. The slag returning and removing device 80 comprises a dissolved air water releaser 81 and a guide cylinder 82.

The dissolved air water releaser 81 is a pipe body which is annular as a whole. The dissolved air water releaser 81 is arranged at the center of the first bracket 62, and the dissolved air water releaser 81 is positioned at the outer peripheral side of the bottom of the oil collecting cylinder 60. The surface of the dissolved air water releaser 81 is distributed with a plurality of release holes, and the water inlet of the dissolved air water releaser 81 is communicated with a dissolved air water source outside the tank body 50 through a water pipe.

The guide shell 82 is a cylinder body which is integrally in a circular truncated cone shape, and the diameter of a bottom end gap of the guide shell 82 is smaller than that of a top end gap. The bottom end of the guide cylinder 82 is covered on the outer side of the dissolved air water releaser 81, so that the dissolved air water released by the dissolved air water releaser 81 through the water outlet hole can completely enter the guide cylinder 82 and move upwards along the inner wall of the guide cylinder 82. The top end of the guide cylinder 82 surrounds the lower side of the periphery of the oil collecting cylinder 60. In this embodiment, the bottom end of the guide cylinder 82 is provided with a frame groove engaged with the frame body of the first bracket 62, so that the guide cylinder 82 is stably supported on the first bracket 62.

When the oil residues are collected, the broken oil residues are back-mixed and then fall into the water to the inner side area of the guide cylinder 82, at the moment, the annular gas-dissolved water releaser 81 releases gas-dissolved water through the uniformly arranged release holes, micro bubbles released from the gas-dissolved water float upwards and adhere to and lift the back-mixed oil residues to float out of the water surface again, and then the oil residues are pushed into the oil collecting cylinder 60 by the flexible scraper I73. The structure of draft tube 82 in this embodiment, the fine bubble of come-up in it will probably appear the whole capture of dross of backmixing, and the both ends of draft tube 82 are the connectivity structure, so not only can not store up dirty tired dirt, and also can be with the disturbance control of the pressure dissolved air water that dissolved air water releaser 81 released to the water in the disengagement zone in the minizone, can not steadily cause the influence to the whole of water in the disengagement zone, consequently can effectively solve the problem that the pollutant removal rate that the dross returns the sediment and arouses descends.

Referring to fig. 11 and 12, the water collecting pipe 90 is a circular pipe, and the water collecting pipe 90 is accommodated in the inner cylinder 52 near the bottom and is disposed in the clean water area. The water outlet of the water collecting pipe 90 is communicated with the outside of the tank body 50 through a second pipeline. The water collecting pipe 90 is provided with through holes (not shown), the holes of the through holes are obliquely downwards and staggered by 45 degrees, clean water is uniformly collected and flows out from a second pipeline connected with the annular pipe. In other embodiments, the water collecting branch pipes may be circumferentially arranged in the clean water area, the end of each water collecting branch pipe is provided with a water collecting bell mouth with a downward notch, the water collecting branch pipes are collected on the water outlet pipe close to the middle of the clean water area, and the clean water flows into the branch pipes through the bell mouths and then flows out of the air flotation device through the water outlet pipe to be used as the water flow input of the jet flow mixer 30 of the micro bubble dissolved air water generating device.

Please refer to fig. 9 to 12. In this embodiment, the staff can set up a level sensor on the air supporting tank to water outlet department at pipeline two can set up a liquid level control valve, controls the liquid level control valve through the signal of level sensor conveying promptly, promptly through the aperture of signal control liquid level control valve, realizes the stable accommodation process of liquid level. The form is a control mode which is necessary to be adopted by the offshore FPSO and offshore platform air floatation. Because the air flotation can work under the sealing pressure, and the air flotation must work under the dangerous environment in a sealing mode. In other embodiments, an overflow liquid level adjusting box (not shown) may be disposed at the water outlet of the second pipeline, which can adjust the liquid level in the tank 50, and a water outlet flow meter may be disposed on the water inlet pipeline of the overflow liquid level adjusting box as needed, so as to facilitate observation of the staff. The overflow liquid level regulating box mainly comprises a movable weir plate, a slag discharging weir, a hand wheel and a screw rod. The overflow level regulating tank is known in the art and will not be described in detail here.

In this embodiment, a water intake bell mouth for the water-dissolved water reflux is provided in the central region of the clean water region (the inner region of the inner cylinder 52 at the bottom of the separation region is defined as the clean water region). So that the clear water in the clear water area is discharged out of the air flotation device after being uniformly collected.

In other embodiments, the spiral-flow air flotation device may further include an annular chute (not shown), which is a multi-tube or multi-plate collective tube body integrally formed in a honeycomb shape. The inclined plate or the inclined pipe is arranged at an angle of 60-75 degrees with the horizontal plane, and an adherend with low floating speed can be adhered to the upper part of the inclined plate or the inclined pipe of the flow channel due to low floating height when flowing through the area and then is gathered into a larger adherend, so that the adherend can float and separate quickly.

The utility model discloses there is few at the disengagement zone internals, hinders less, the resistance is little to the fluid of weak whirl state to can not lead to the adherend desorption because of the adherend collision disengagement zone internals. And the lower part of the clean water area is a sand settling area, impurities with density higher than that of water are deposited at the bottom during operation, and then are periodically discharged through a sewage outlet arranged at the lowest part of the bottom wall of the outer barrel 51.

Referring to fig. 1, the microbubble dissolved gas water generated by the microbubble dissolved gas water generating device can not only input gas-liquid mixed liquid into the tangential inlet third 511 of the cyclone air flotation device, but also input dissolved gas water into the dissolved gas water releaser 81. And the water purified by the cyclone air flotation device can be collected by a water collecting pipe and then is used as the water flow input of the jet flow mixer 30 in the micro-bubble dissolved air water generating device, so that system circulation is formed.

The utility model discloses a sediment remove device and microbubble dissolved air water generating device are returned in the setting for the dross piece is dissolved with the help of the microbubble dissolved air water, and the liquid level is gathered again because of rising because of dissolving the dross that forms, realizes the dross and collects, therefore has improved the collection effect to the dross piece. And scum blocks caused by the subsequent scum pushing and collecting of the scum piled on the scum pushing and collecting end also have good recollection effect. The utility model discloses a sediment device is scraped to spiral, the scraper blade under the drive of driving machine with the whirl rivers opposite direction motion of whirl air supporting or not move, simultaneously at the effect of pushing away of flexible doctor-bar one and flexible doctor-bar two, can in time push the receipts oil section of thick bamboo with the oil slick that gathers after gathering around the receipts oil section of thick bamboo to make the oil slick follow aquatic quickly separating away, reach the effect that the oil extraction moisture content is low. The utility model discloses flexible doctor-bar two in the spiral scum device is scraped, it can both remove the dross (can not flow automatically or the oil residue of overflow) that adheres on inner tube section of thick bamboo wall through spiral scraper blade skimming, realizes in time arranging sediment, not accumulating. The utility model discloses a rotation rate of driving machine drive scraper blade is low, and is little to the disturbance of dross, reduces the broken probability of dross, simultaneously through returning sediment remove device, the dregs of fat that probably broken back when receiving the sediment falls into the aquatic downwards lift up the surface of water of floating again to in being pushed into by flexible doctor-bar one and receiving the oil drum, effectively solved the problem that the easy destruction bubble adherend of slag removal process arouses out water quality of water decline. The utility model discloses a scraper blade is fit for the air supporting ware of different scales, is applied to and reforms transform current air supporting ware, can adjust the installation in restricted space, and the practicality is high.

The utility model discloses a tangential is intake and the extremely big whirl of rotational flow separation tube assembly formation speed gradient carries out the secondary cutting fragmentation to the bubble, reaches and dissolves gas efficiency and the bigger tolerance of taking of dissolving that the gas pitcher is higher than the tradition, and the gas that dissolves in the gas water of preparing removes the gas that has dissolved, still carries the micro-fine bubble of cutting fragmentation in a large number, has formed the super saturated gas water of dissolving. The utility model discloses a whirl dissolves gas pitcher whirl screening separation technique, at the whirl in-process, the big bubble of gas-water mixture can be sheared fine bubble to dissolved gas water fine bubble's carrying volume has been increaseed. The utility model discloses the holistic whirl structural design of whirl gas pitcher is rolled up at the whirl and is swept under the effect, and the jar inner wall can prevent effectively that the adhesion filth, even the filth of adhesion also can be rolled up when the start and sweep and clear away under the effect when shutting down, and density is than the filth (like oils) that water is little simultaneously, will be followed and dissolved the gas aquatic separation back and discharged along with big bubble.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A cyclone air-floating device comprises a cyclone air-floating device, and is characterized in that the cyclone air-floating device comprises:

a tank body;

2. The cyclonic air flotation device as claimed in claim 1, wherein the cyclonic air flotation device further comprises a microbubble dissolved air water generating device for generating microbubble dissolved air water;

microbubble dissolved water gas generating device includes:

wherein, the water pressure of the gas-liquid mixed liquid satisfies:

3. The cyclonic air flotation apparatus as claimed in claim 2, wherein the cyclone tube assembly comprises, in order from top to bottom in an upright direction:

4. The cyclonic air flotation apparatus as claimed in claim 3, wherein the third duct comprises:

5. The cyclonic air flotation apparatus as claimed in claim 3, wherein the tangential inlet is cut horizontally perpendicular to the respective side wall of the dissolved air tank or obliquely upwardly inclined to the respective side wall of the dissolved air tank;

and/or;

6. The cyclonic air flotation apparatus as claimed in claim 1,

the tank body comprises an outer cylinder and an inner cylinder sleeved in the outer cylinder; a mixing area is formed between the inner cylinder and the outer cylinder; a second cyclone body spirally rising along the side wall of the inner barrel is input into the mixing area;

7. The cyclonic air flotation device of claim 6, wherein the scraper extends in a spiral involute shape to the inner wall of the inner cylinder, in a straight line shape to the inner wall of the inner cylinder, or in an arc shape to the inner wall of the inner cylinder.

8. The cyclone air-flotation device as recited in claim 6, wherein the side wall of the outer cylinder near the bottom is respectively provided with a tangential inlet three and a tangential inlet four, wherein the tangential inlet three and the tangential inlet four are cut from the corresponding side wall and are communicated with the mixing zone, the tangential inlet three is used for inputting a gas-liquid mixed liquid, and the tangential inlet four is used for inputting raw water; the tangential inlet III is positioned below the tangential inlet IV in the input direction, the flow velocity of the gas-liquid mixed liquid is greater than that of the raw water, and the gas-liquid mixed liquid and the raw water are mixed at a differential speed by means of flow velocity difference to form a spiral flow body II which spirally rises along the side wall of the inner barrel.

9. The cyclone air-flotation device as claimed in claim 8, wherein the second cyclone body which flows into the inner cylinder from the gap continues to swirl on the liquid surface by increasing the water pressure of the gas-liquid mixture and the raw water in equal proportion, and the swirling direction is opposite to the rotation direction of the scraper.

10. The cyclone air flotation device according to claim 1, wherein the dissolved gas water releaser is positioned in the guide cylinder and is in an annular tube shape, and a plurality of through holes for outputting the micro-bubble dissolved gas water are formed in the tube wall.