CN209940523U - Double-circulation air flotation machine - Google Patents
Double-circulation air flotation machine Download PDFInfo
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- CN209940523U CN209940523U CN201920736354.0U CN201920736354U CN209940523U CN 209940523 U CN209940523 U CN 209940523U CN 201920736354 U CN201920736354 U CN 201920736354U CN 209940523 U CN209940523 U CN 209940523U
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Abstract
The utility model discloses a dual cycle air supporting machine, this dual cycle air supporting machine includes: the device comprises a machine body, a water collecting tank, a clear water area, a flotation area, a contact area and a reaction area, wherein the water collecting tank, the clear water area, the flotation area, the contact area and the reaction area are distributed in parallel; the slag scraping system is distributed at the upper part of the flotation zone; releasers distributed in the contact area of the body; the dissolved gas water circulating system is respectively connected with the machine body and the releaser through pipelines; a second top cover used for sealing, wherein the second top cover is fixed at the upper part of the flotation area; the utility model structurally transforms the conventional dissolved air floatation machine, changes the working medium generating micro bubbles, adopts nitrogen as a circulating medium, thereby isolating the treated sewage from the air, preventing the dissolved air floatation machine from overflowing toxic gas in the operation process, preventing air pollution, ensuring safer work, and being capable of applying the dissolved air floatation technology to wider places; the gas is recycled, the cost is low, and the resource utilization rate is high.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, concretely relates to dual cycle air supporting machine.
Background
In the operation process of the conventional dissolved air flotation machine, because micro bubbles released by a dissolved air releaser can carry toxic and harmful gases out of wastewater, one part of the toxic and harmful gases is attached to a scum layer, and the other part of the toxic and harmful gases is released into the atmosphere in the form of tail gas to form secondary pollution; in addition, because the working medium of the conventional dissolved air flotation is air, the special requirement cannot be met, namely the requirement that the treated sewage is isolated from the air under the specific condition cannot be met, and therefore a double-circulation air flotation machine is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-circulation air flotation machine, which aims to solve the problems that in the operation process of the conventional dissolved air flotation machine proposed in the background technology, because micro bubbles released by a dissolved air releaser can carry toxic gas out of wastewater, one part of the gas is attached to a scum layer, and the other part of the gas is released to the atmosphere in the form of tail gas to form secondary pollution; in addition, because the working medium of the conventional dissolved air flotation is air, the problem that the special requirement, namely the requirement that the treated sewage is isolated from the air under the specific condition cannot be met is solved.
In order to achieve the above object, the utility model provides a following technical scheme: a dual cycle air flotation machine, comprising:
the device comprises a machine body, a water collecting tank, a clear water area, a flotation area, a contact area and a reaction area, wherein the water collecting tank, the clear water area, the flotation area, the contact area and the reaction area are distributed in parallel;
the slag scraping system is distributed at the upper part of the flotation zone;
releasers distributed in the contact area of the body;
the dissolved gas water circulating system is respectively connected with the machine body and the releaser through pipelines;
and a second top cover used for sealing, wherein the second top cover is fixed at the upper part of the flotation area.
Preferably, one end of the machine body is provided with a water inlet communicated with the reaction area, and the other end of the machine body is provided with a water outlet communicated with the water collecting tank.
Preferably, a scum groove positioned at the tail part of the scum scraping system is also arranged in the flotation zone.
Preferably, an outlet weir is arranged at the interface of the clean water area and the water collecting tank.
Preferably, a guide wall is fixed at a position close to the reaction zone in the flotation zone, the guide wall and the outer wall of the reaction zone form a contact zone, and a stirring system is arranged in the reaction zone.
Preferably, the dissolved air water circulating system comprises a dissolved air reflux pump, an ejector and a dissolved air tank, and the machine body is sequentially connected with the dissolved air reflux pump, the ejector, the dissolved air tank and the releaser through pipelines.
Preferably, a first pressure gauge, a first check valve and a gate valve are further respectively arranged on a pipeline between the dissolved gas reflux pump and the ejector.
Preferably, the dissolved air tank is further provided with a second pressure gauge, an exhaust valve, a safety valve, a blow-down valve and a nitrogen introducing pipe, and the nitrogen introducing pipe is provided with a float flowmeter, a second check valve and a ball valve.
Preferably, the second top cover is further provided with an exhaust port communicated with the flotation zone, the ejector is further communicated with the exhaust port through a pipeline, and a butterfly valve is arranged on the pipeline connecting the ejector and the exhaust port.
Preferably, the second top cover is further provided with a second observation port and a third observation port, the bottom of the machine body is provided with a base, the top of the machine body is also fixed with a first top cover, and the first top cover is provided with a first observation port; and a second sewage draining outlet and a first sewage draining outlet which are communicated with the clean water area and the contact area are respectively arranged on the machine body.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model structurally transforms the conventional dissolved air flotation machine, changes the working medium for generating micro bubbles, adopts nitrogen as a circulating medium and adopts a glass fiber reinforced plastic cover shell for sealing, thereby isolating the treated sewage from air, preventing the dissolved air flotation machine from overflowing toxic gas in the operation process, preventing air pollution, ensuring safer work and being capable of applying the dissolved air flotation technology to wider places; the gas is recycled, the cost is low, and the resource utilization rate is high.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1. a water inlet; 2. a stirring system; 3. a releaser; 4. a guide wall; 5. a scum trough; 6. an effluent weir; 7. a water outlet; 8. a slag scraping system; 9. a body; 10. a first top cover; 11. a second top cover; 12. a base; 13. a first drain port; 14. a second sewage draining outlet; 15. a first viewing port; 16. a second viewing port; 17. a third viewing port; 18. an exhaust port; 19. a dissolved gas reflux pump; 20. a first pressure gauge; 21. a first check valve; 22. a gate valve; 23. an ejector; 24. a butterfly valve; 25. a dissolved air tank; 26. a second pressure gauge; 27. an exhaust valve; 28. a safety valve; 29. a blowoff valve; 30. a float flow meter; 31. a second check valve; 32. a ball valve.
The utility model provides an instrument and meter all can obtain through market purchase and private customization.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a dual cycle air flotation machine, comprising:
the device comprises a device body 9, wherein the device body 9 comprises a water collecting tank, a clear water area, a flotation area, a contact area and a reaction area which are distributed in parallel;
the slag scraping system 8 is distributed at the upper part of the flotation zone;
releasers 3, the releasers 3 are distributed in the contact area of the machine body 9;
the dissolved gas water circulating system is respectively connected with the machine body 9 and the releaser 3 through pipelines;
and a second top cover 11 used for sealing, wherein the second top cover 11 is fixed at the upper part of the flotation area.
Further, the dissolved gas water circulating system comprises a dissolved gas reflux pump 19, an ejector 23 and a dissolved gas tank 25, the body 9, the dissolved gas reflux pump 19, the ejector 23, the dissolved gas tank 25 and the releaser 3 are sequentially connected through a pipeline, a first pressure gauge 20, a first check valve 21 and a gate valve 22 are further respectively arranged on the pipeline between the dissolved gas reflux pump 19 and the ejector 23, a second pressure gauge 26, an exhaust valve 27, a safety valve 28, a blow-off valve 29 and a nitrogen introducing pipe are further respectively arranged on the dissolved gas tank 25, a float flowmeter 30, a second check valve 31 and a ball valve 32 are respectively arranged on the nitrogen introducing pipe, the pressure in the dissolved gas tank 25 can be mastered in real time, the internal pressure can be properly adjusted, the safe processing is ensured, the nitrogen introducing pipe is used for introducing nitrogen into the dissolved gas tank 25, and is compressed into the dissolved gas water in the returned water through the float flowmeter 30 to form 'dissolved gas water', finally, the water is discharged to the releaser 3 to form water circulation.
Further, an exhaust port 18 communicated with the flotation zone is further formed in the second top cover 11, the ejector 23 is further communicated with the exhaust port 18 through a pipeline, a butterfly valve 24 is arranged on a pipeline connecting the ejector 23 and the exhaust port 18, part of nitrogen discharged from the exhaust port 18 and part of clean water flowing back from the clean water zone are mixed through the ejector 23 to form dissolved air water, the dissolved air water is stored in a dissolved air tank 25, and nitrogen tail gas is recycled to form air circulation.
Specifically, above-mentioned second top cap 11 is sealed for the glass steel housing, and the glass steel housing leakproofness is good, guarantees to be isolated by treated sewage and air.
Furthermore, a second observation port 16 and a third observation port 17 are respectively arranged on the second top cover 11, a base 12 is arranged at the bottom of the machine body 9, a first top cover 10 is fixed at the top of the machine body 9, and a first observation port 15 is arranged on the first top cover 10; the machine body 9 is also provided with a second sewage draining port 14 and a first sewage draining port 13 which are communicated with the clean water area and the contact area respectively, so that sewage can be drained conveniently and timely.
Furthermore, a water inlet 1 communicated with the reaction area is arranged at one end of the machine body 9, a water outlet 7 communicated with the water collecting tank is arranged at the other end of the machine body, a scum trough 5 positioned at the tail part of the scum scraping system 8 is also arranged in the flotation area, a water outlet weir 6 is arranged at the joint of the clear water area and the water collecting tank, a flow guide wall 4 is fixed at a position close to the reaction area in the flotation area, the flow guide wall 4 and the outer wall of the reaction area form a contact area, and a stirring system 2 is arranged in the reaction area.
Specifically, the slag scraping system 8 is a chain plate type slag scraping machine, and mainly comprises a driving motor, a driving chain and a slag scraping cutter.
Specifically, the stirring system 2 mainly includes a driving motor, a stirring rod, and a stirring blade.
The utility model discloses a theory of operation and use flow: when sewage is treated, the sewage firstly enters a reaction area of air floatation through a water inlet 1 and is stirred and mixed with a medicament, and then enters a contact area through a connecting through hole at the lower part, backflow dissolved air water in the contact area is decompressed through a releaser 3, a large amount of nitrogen microbubbles (about 30-50um) are uniformly released, the microbubbles are adhered to the surface of suspended matters after the sewage and the dissolved air water are fully mixed, a gas-liquid-solid composite body with the specific gravity smaller than the density of water is formed, the gas-liquid-solid composite body passes through a flow guide wall 4 and enters a floatation area, and floats to the water surface to form floating slag, and the floating slag on the upper layer of the floatation area is scraped to a floating slag groove 5 by a slag scraping system 8 and is discharged out of; clear water at the lower layer of the flotation area flows to a clear water area, a part (about 30-50%) of water in the clear water area is lifted to a dissolved air tank 25 through a dissolved air reflux pump 19, meanwhile, nitrogen is compressed into the dissolved air tank 25 through a float flowmeter 30 and dissolved in the reflux water to form 'dissolved air water', and the dissolved air water enters a dissolved air releaser 3 through the bottom of the dissolved air tank 25 to form 'dissolved air water circulation'; the water left in the clean water area overflows to the water collecting tank for discharging through the water outlet weir 6.
The dissolved air flotation system is sealed by a second top cover 11 of the glass fiber reinforced plastic housing in the flotation zone, one part of nitrogen released by the dissolved air releaser 3 is attached to a scum layer, the other part of tail gas is gathered in the housing and is sucked by a jet device 23 of the dissolved air system to be recycled as a working medium, and the housing has good sealing performance, so that toxic and harmful gas overflowing during the operation of the dissolved air flotation machine cannot escape, and the treated sewage is also ensured to be isolated from the air; and in addition, the nitrogen tail gas cannot escape, so that the consumption of nitrogen is saved.
The return flow of the air floatation water is used as the water-dissolved water to form water circulation, and the nitrogen tail gas is recycled to form air circulation, thereby forming double-circulation air-dissolved air floatation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A dual cycle air supporting machine is characterized in that: this dual cycle air supporting machine includes:
the device comprises a machine body (9), wherein the machine body (9) comprises a water collecting tank, a clear water area, a flotation area, a contact area and a reaction area which are distributed in parallel;
a slag scraping system (8), wherein the slag scraping system (8) is distributed at the upper part of the flotation zone;
-reliefs (3), said reliefs (3) being distributed in a contact zone of said body (9);
the dissolved gas water circulating system is respectively connected with the machine body (9) and the releaser (3) through pipelines;
a second cover (11) for sealing, said second cover (11) being fixed to the upper part of said flotation area.
2. The dual-cycle air flotation machine as claimed in claim 1, wherein: one end of the machine body (9) is provided with a water inlet (1) communicated with the reaction area, and the other end of the machine body is provided with a water outlet (7) communicated with the water collecting tank.
3. The dual-cycle air flotation machine as claimed in claim 1, wherein: and a scum groove (5) positioned at the tail part of the scum scraping system (8) is also arranged in the flotation zone.
4. The dual-cycle air flotation machine as claimed in claim 1, wherein: and an effluent weir (6) is arranged at the interface of the clean water area and the water collecting tank.
5. The dual-cycle air flotation machine as claimed in claim 1, wherein: a guide wall (4) is fixed at a position close to the reaction zone in the flotation zone, the guide wall (4) and the outer wall of the reaction zone form a contact zone, and a stirring system (2) is arranged in the reaction zone.
6. The dual-cycle air flotation machine as claimed in claim 1, wherein: the gas dissolving water circulation system comprises a gas dissolving reflux pump (19), an ejector (23) and a gas dissolving tank (25), and the machine body (9) is sequentially connected with the gas dissolving reflux pump (19), the ejector (23), the gas dissolving tank (25) and the releaser (3) through pipelines.
7. The dual-cycle air flotation machine as claimed in claim 6, wherein: and a first pressure gauge (20), a first check valve (21) and a gate valve (22) are further respectively arranged on a pipeline between the dissolved gas reflux pump (19) and the ejector (23).
8. The dual-cycle air flotation machine as claimed in claim 6, wherein: and the dissolved air tank (25) is also provided with a second pressure gauge (26), an exhaust valve (27), a safety valve (28), a blow-down valve (29) and a nitrogen introducing pipe, and the nitrogen introducing pipe is respectively provided with a float flowmeter (30), a second check valve (31) and a ball valve (32).
9. The dual-cycle air flotation machine as claimed in claim 6, wherein: an exhaust port (18) communicated with the flotation zone is further formed in the second top cover (11), the ejector (23) is further communicated with the exhaust port (18) through a pipeline, and a butterfly valve (24) is arranged on the pipeline connecting the ejector (23) and the exhaust port (18).
10. The dual-cycle air flotation machine as claimed in claim 1, wherein: a second observation port (16) and a third observation port (17) are respectively arranged on the second top cover (11), a base (12) is arranged at the bottom of the machine body (9), a first top cover (10) is fixed at the top of the machine body (9), and a first observation port (15) is arranged on the first top cover (10); and a second sewage draining port (14) and a first sewage draining port (13) which are communicated with the clean water area and the contact area are respectively arranged on the machine body (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920736354.0U CN209940523U (en) | 2019-05-22 | 2019-05-22 | Double-circulation air flotation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920736354.0U CN209940523U (en) | 2019-05-22 | 2019-05-22 | Double-circulation air flotation machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209940523U true CN209940523U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920736354.0U Active CN209940523U (en) | 2019-05-22 | 2019-05-22 | Double-circulation air flotation machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209940523U (en) |
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2019
- 2019-05-22 CN CN201920736354.0U patent/CN209940523U/en active Active
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Address after: Room 1306, Guiguan auxiliary building, no.216, Changjiang Middle Road, Huangdao District, Qingdao, Shandong Province Patentee after: Qingdao Ouyi Tiancheng Environmental Engineering Co., Ltd Address before: Room 612 613, building B, Vanke center, No. 2, Heilongjiang South Road, Shibei District, Qingdao City, Shandong Province Patentee before: Qingdao Ouyi Tiancheng Environmental Engineering Co., Ltd |