CN217077045U

CN217077045U - Dissolved air flotation machine

Info

Publication number: CN217077045U
Application number: CN202220899673.5U
Authority: CN
Inventors: 王彩良; 陈蔚萍
Original assignee: Xinjiang Greenos Environmental Protection Technology Co ltd
Current assignee: Xinjiang Greenos Environmental Protection Technology Co ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-07-29
Anticipated expiration: 2032-04-19

Abstract

The utility model relates to a sewage treatment technical field specifically is a dissolve gas air supporting machine, include the equipment casing, dissolve gas pitcher, microbubble generator, supersonic generator and scrape the foam mechanism, the microbubble generator includes barrel, waterproof ventilated membrane, hard otter board and soft otter board. The utility model provides an above-mentioned dissolve gas air supporting machine lets in the microbubble generator through dissolving the gas pitcher with water and air intensive mixing under certain pressure and will dissolve the sewage that has the air, supersonic generator sends waterproof ventilated membrane and the soft screen plate high frequency vibration in the ultrasonic wave messenger microbubble generator, the internal gas escape forms the suspended solid come-up of microbubble messenger's air supporting pond sewage in the barrel, detach the processing that can accomplish the suspended solid in the sewage through scraping the froth that the froth mechanism will float at the surface of water at last, thereby dissolve the gas pitcher, the microbubble generator, supersonic generator and scrape the cooperation of mutually coordinating of froth mechanism, the realization carries out high efficiency treatment to the suspended solid in the sewage.

Description

Dissolved air flotation machine

Technical Field

The utility model relates to a sewage treatment technical field specifically is a dissolve gas air supporting machine.

Background

With the development of economy, the influence of the discharge of industrial sewage and municipal sewage on the surrounding environment is more and more serious, and relevant regulations and regulations are made in various places to ensure the standard discharge of sewage. For grease, jelly and other non-soluble solid suspended matters contained in sewage, different devices are needed to respectively complete the separation and treatment of the sewage, so that the quantity of sewage treatment devices is large, the process is complicated, and the treatment effect is poor and unsatisfactory.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a dissolved air flotation machine to solve the above problems.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a dissolved air flotation machine comprises an equipment shell, a dissolved air tank, a micro-bubble generator, an ultrasonic generator and a foam scraping mechanism, wherein a partition plate is arranged in the equipment shell and divides the inner space of the equipment shell into an air flotation tank and a foam scraping tank; the microbubble generator comprises a cylinder body, a waterproof breathable film, a hard screen plate and a soft screen plate, wherein the side wall of the cylinder body is provided with a plurality of side holes, each side hole is provided with a layer of waterproof breathable film, two layers of hard screen plates and a layer of soft screen plate, the two layers of hard screen plates are attached to two sides of the waterproof breathable film, and screen holes of the hard screen plates on two sides of the waterproof breathable film are arranged in a staggered manner; dissolve the gas pitcher through the backward flow water pipe way with scrape the foam pond intercommunication, be equipped with the water pump on the backward flow water pipe way, dissolve gas pitcher one side and be connected with the air compressor machine through the pipeline, dissolve the gas pitcher opposite side through stretching into the inlet water pipeline and the barrel intercommunication in the air supporting pond, scrape foam pond upper portion and install and scrape the foam mechanism.

Preferably, the top of one side of the equipment shell is provided with a water inlet pipe, the bottom of the other side of the equipment shell is provided with a water outlet pipe, a guide plate is arranged below the outlet end of the water inlet pipe, and the guide plate is obliquely arranged so as to guide the inflowing sewage to the ultrasonic generator.

Preferably, the bottom of the barrel is provided with a drain pipe, the drain pipe is provided with a one-way valve and a drain pump, and the water inlet pipe is provided with an electromagnetic valve.

Preferably, the inner wall of the upper end of the cylinder body is connected with a piston in a sealing and sliding manner.

Preferably, a limit switch is arranged at an opening at the upper end of the cylinder body.

Preferably, scrape the foam mechanism and include drive assembly, locate drive hinge on the drive assembly and locate a plurality of scrapers on the drive hinge, drive assembly rotates the seat and rotates the driving motor that the seat transmission is connected with one of them including setting up two of scraping the foam pond top, and the drive hinge setting is on rotating the seat.

Preferably, a foam collecting groove is formed in the side wall of the foam scraping pool, the foam collecting groove comprises a vertical plate and a connecting plate connected with the side wall, a foam discharging port is formed in the outer side wall of the foam scraping pool, and the foam discharging port is located above the connecting plate and communicated with the foam collecting groove.

The utility model provides an above-mentioned dissolve gas air supporting machine lets in the microbubble generator through dissolving the gas pitcher with water and air intensive mixing under certain pressure and will dissolve the sewage that has the air, supersonic generator sends waterproof ventilated membrane and the soft screen plate high frequency vibration in the ultrasonic wave messenger microbubble generator, the internal gas escape forms the suspended solid come-up of microbubble messenger's air supporting pond sewage in the barrel, detach the processing that can accomplish the suspended solid in the sewage through scraping the froth that the froth mechanism will float at the surface of water at last, thereby dissolve the gas pitcher, the microbubble generator, supersonic generator and scrape the cooperation of mutually coordinating of froth mechanism, the realization carries out high efficiency treatment to the suspended solid in the sewage.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a dissolved air flotation machine according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural diagram of the microbubble generator in fig. 1;

fig. 3 is a partially enlarged schematic view of the microbubble generator of fig. 2;

in the figure: 10. an equipment housing; 101. an air floatation tank; 102. a foam scraping pool; 11. a partition plate; 12. a water inlet pipe; 13. a baffle; 14. a water outlet pipe; 15. a foam collecting groove; 151. a vertical plate; 152. connecting plates; 153. a foam discharging port; 20. a dissolved air tank; 21. a water inlet pipeline; 22. an electromagnetic valve; 23. a return water conduit; 24. a water pump; 25. an air compressor; 30. a microbubble generator; 31. a barrel; 311. a side hole; 312. a drain pipe; 313. a one-way valve; 314. draining pump; 32. a waterproof breathable film; 33. a hard mesh plate; 34. a soft screen plate; 35. a piston; 36. a limit switch; 40. an ultrasonic generator; 51. a drive hinge; 52. a squeegee; 53. a rotating seat; 54. a drive motor; 60. a PLC controller.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and which therefore show only the constituents relevant to the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1, fig. 2 and fig. 3, a preferred embodiment of the present invention provides a dissolved air flotation machine, which includes an apparatus housing 10, a dissolved air tank 20, a micro-bubble generator 30, an ultrasonic generator 40, a foam scraping mechanism and a PLC controller 60. The ultrasonic generator 40 is in communication connection with the PLC controller 60 so as to control the operating state of the ultrasonic generator 40 through the PLC controller 60.

The top of one side of the equipment shell 10 is provided with a water inlet pipe 12, the bottom of the other side is provided with a water outlet pipe 14, sewage to be treated enters the equipment shell 10 from the water inlet pipe 12, and the purified sewage is discharged from the water outlet pipe 14. A partition plate 11 is arranged in the equipment shell 10, the partition plate 11 divides the inner space of the equipment shell 10 into an air floatation tank 101 and a foam scraping tank 102, the ultrasonic generator 40 and the micro-bubble generator 30 are arranged in the air floatation tank 101, the ultrasonic generator 40 is arranged at the bottom of the air floatation tank 101, the micro-bubble generator 30 is arranged obliquely above the ultrasonic generator 40, and the upper end of the micro-bubble generator 30 is higher than the liquid level of the air floatation tank 101.

Preferably, a guide plate 13 is arranged below the outlet end of the water inlet pipe 12, the guide plate 13 is obliquely arranged to guide the flowing-in sewage to the ultrasonic generator 40, the sewage which flows in from the water inlet pipe 12 and is suspended with suspended matters flows near the ultrasonic generator 40 under the guide of the guide plate 13, the ultrasonic generator 40 generates vibration to drive the suspended matters to vibrate rapidly, so that the suspended matters are crushed and disintegrated rapidly, the integrated density of the disintegrated and smashed suspended matters and micro bubbles after attachment is smaller, and the suspended matters can float upwards to the water surface more rapidly.

Microbubble generator 30 is used for providing the suspended solid come-up in the microbubble makes air supporting 101 in the sewage to air supporting 101 in the pond, and microbubble generator 30 includes barrel 31, waterproof ventilated membrane 32, hard otter board 33 and soft otter board 34, and a plurality of side openings 311 have been seted up to the barrel 31 lateral wall, and every side opening 311 department all is equipped with the waterproof ventilated membrane 32 of one deck, two-layer hard otter board 33 and one deck soft otter board 34, and in this embodiment, waterproof ventilated membrane 32, hard otter board 33 and soft otter board 34 veneer are fixed in side opening 311 edge. Two layers of hard screen plates 33 are attached to two sides of the waterproof breathable film 32, the screen holes of the hard screen plates 33 on two sides of the waterproof breathable film 32 are arranged in a staggered mode, the size of the screen holes of the hard screen plates 33 is 20-16 meshes, the diameter of bubbles escaping once is about 1mm, and the smaller bubbles are convenient for the soft screen plates 34 to crush the bubbles into smaller micro-bubbles in the later period; the sieve pore size of the soft sieve plate 34 is 20-16 meshes, the soft sieve plate 34 is made of nylon net and is tightly glued in the side hole 311.

Preferably, the bottom of the cylinder 31 is provided with a drain pipe 312, the drain pipe 312 is provided with a check valve 313 and a drain pump 314, the check valve 313 and the drain pump 314 are in communication connection with the PLC controller 60, and the sewage in the cylinder 31 is drained along the drain pipe 312 by opening the check valve 313 and the drain pump 314.

The dissolved air tank 20 is a closed pressurized container, and has the function of realizing full contact mass transfer of water and air in the dissolved air tank 20 under certain pressure (generally 0.2-0.6MPa), so that the air is dissolved in the sewage to reach the saturation degree. The top of the dissolved air tank 20 is communicated with the foam scraping pool 102 through a return water pipeline 23, a water pump 24 is arranged on the return water pipeline 23, and sewage in the foam scraping pool 102 is pumped into the dissolved air tank 20 through the water pump 24; one side of the bottom of the dissolved air tank 20 is connected with an air compressor 25 through a pipeline, so that compressed air can be provided conveniently. The water pump 24 and the air compressor 25 are in communication connection with the PLC controller 60, so that the operating states of the water pump 24 and the air compressor 25 are controlled by the PLC controller 60. The other side of the bottom of the dissolved air tank 20 is communicated with the cylinder 31 through a water inlet pipeline 21 extending into the air floatation tank 101, sewage dissolved with air flows into the cylinder 31 along the water inlet pipeline 21, an electromagnetic valve 22 is arranged on the water inlet pipeline 21, and the electromagnetic valve 22 is in communication connection with the PLC 60.

Preferably, the piston 35 is connected to the inner wall of the upper end of the cylinder 31 in a sealing and sliding manner, the piston 35 can slide up and down in the cylinder 31, when the gas in the water in the cylinder 31 escapes outwards through the side hole 311, the pressure in the cylinder 31 is reduced, and at this time, the piston 35 slides downwards along the inner wall of the cylinder 31; when the pressure in the cylinder 31 increases, the piston 35 slides upward along the inner wall of the cylinder 31.

Further, a limit switch 36 is arranged at an opening at the upper end of the cylinder 31, the limit switch 36 is in communication connection with the PLC 60, when the pressure in the cylinder 31 increases, and the piston 35 slides upwards along the inner wall of the cylinder 31 to contact the limit switch 36, the PLC 60 controls the electromagnetic valve 22 on the water inlet pipeline 21 to be closed, and the dissolved air tank 20 stops injecting water into the cylinder 31.

Scrape foam pond 102 upper portion and install and scrape the foam mechanism, scrape the foam mechanism and include drive assembly, locate drive hinge 51 on the drive assembly and locate a plurality of scrapers 52 on drive hinge 51, drive assembly is including setting up two rotation seats 53 of scraping foam pond 102 top and with one of them rotate driving motor 54 that seat 53 transmission is connected, drive hinge 51 sets up on rotating seat 53, driving motor 54 and PLC controller 60 communication connection, driving motor 54's operating condition is controlled by PLC controller 60.

The side wall of the foam scraping pool 102 is provided with a foam collecting groove 15, the foam collecting groove 15 comprises a vertical plate 151 and a connecting plate 152 connected with the side wall, the outer side wall of the foam scraping pool 102 is provided with a foam discharging port 153, the foam discharging port 153 is positioned above the connecting plate 152 and is communicated with the foam collecting groove 15, the floating foam scraped by the foam scraping mechanism falls into the foam collecting groove 15, and the floating foam flows out from the foam discharging port 153.

The utility model discloses during the use, external pending sewage gets into air supporting pond 101 from inlet tube 12, dissolve in the gas pitcher 20 and dissolve the sewage inflow barrel 31 that has the air in, supersonic generator 40 sends the ultrasonic wave and drives water high-frequency vibration on every side, waterproof ventilated membrane 32 produces high-frequency vibration along with the water, it has the part to be in the state of the sieve mesh department indent at hard otter board 33 in the vibration process, because vibration frequency is very big, so waterproof ventilated membrane 32 is inwards sunken speed extremely fast, the atmospheric pressure that leads to corresponding position this moment is inevitable to be increased to the water pressure that surpasses waterproof ventilated membrane 32 opposite side suddenly, thereby make partial air pass waterproof ventilated membrane 32 under the effect of pressure difference, the air can form the bubble after passing hard otter board 33 and continue outside motion. The soft network board 34 of side opening 311 department receives the ultrasonic wave influence also to produce high frequency vibration, the bubble is when soft network board 34, high frequency vibration's soft network board 34 can smash the bubble into the miniature bubble that the diameter is littleer, just can contact and adhere to each other with the suspended solid in the sewage after miniature bubble gets into air supporting pond 101, thereby make the suspended solid of suspension in air supporting pond 101 can be quick float on the upper water surface, the later stage only needs to detach the processing to the suspended solid in the sewage through the froth of scraping the foam mechanism and floating on the water surface. Meanwhile, the micro gas core cavitation bubbles in the sewage vibrate under the action of ultrasonic waves to form cavitation phenomena so as to generate tens of thousands of micro bubbles, namely cavitation bubbles. These cavitation bubbles grow in the negative pressure region formed by the longitudinal propagation of the ultrasonic waves, and rapidly close in the positive pressure region, thereby being compressed and stretched under alternating positive and negative pressures. At the moment when the cavitation bubbles are compressed to collapse, huge instantaneous pressure can be generated, generally reaching dozens of megapascals to hundreds of megapascals, and the huge instantaneous pressure can crush suspended matters which are not easy to disintegrate, so that the aim of crushing the suspended matters in water is further fulfilled. When the cavitation bubbles generated by the ultrasonic wave released by the ultrasonic generator 40 in the water body are exploded, the micro bubbles escaping from the micro bubble generator 30 are also exploded into bubbles of smaller micron level, so that the bubbles are more easily combined with suspended matters in the water, and the suspended matters in the sewage are more thoroughly treated.

The utility model provides an above-mentioned dissolve gas air supporting machine is through dissolving gas pitcher 20 and realizing the intensive mixing of water and air under certain pressure and will dissolve the sewage that has the air and let in microbubble generator 30, supersonic generator 40 sends waterproof ventilated membrane 32 and the 34 high-frequency vibration of soft otter board in the ultrasonic wave makes microbubble generator 30, the interior gas escape forms microbubble and makes the suspended solid come-up in the sewage of air supporting pond 101 in the barrel 31, detach the processing that can accomplish the suspended solid in the sewage through scraping the froth that the froth mechanism will float on the surface of water at last, thereby through dissolving gas pitcher 20, microbubble generator 30, supersonic generator 40 and scrape the mutual coordination of froth mechanism and realize carrying out high-efficiency processing to the suspended solid in the sewage.

The above description of the embodiments of the present invention is not intended to refer to the prior art, but may be implemented by referring to the prior art.

In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A dissolved air flotation machine is characterized in that: the device comprises an equipment shell, a dissolved air tank, a micro-bubble generator, an ultrasonic generator and a foam scraping mechanism, wherein a partition plate is arranged in the equipment shell and divides the inner space of the equipment shell into an air floatation tank and a foam scraping tank; the microbubble generator comprises a cylinder body, a waterproof breathable film, a hard screen plate and a soft screen plate, wherein the side wall of the cylinder body is provided with a plurality of side holes, each side hole is provided with a layer of waterproof breathable film, two layers of hard screen plates and a layer of soft screen plate, the two layers of hard screen plates are attached to two sides of the waterproof breathable film, and screen holes of the hard screen plates on two sides of the waterproof breathable film are arranged in a staggered manner; dissolve the gas pitcher through the backward flow water pipe way with scrape the foam pond intercommunication, be equipped with the water pump on the backward flow water pipe way, dissolve gas pitcher one side and be connected with the air compressor machine through the pipeline, dissolve the gas pitcher opposite side through stretching into the inlet water pipeline and the barrel intercommunication in the air supporting pond, scrape foam pond upper portion and install and scrape the foam mechanism.

2. The dissolved air flotation machine according to claim 1, characterized in that: the sewage treatment device is characterized in that a water inlet pipe is arranged at the top of one side of the device shell, a water outlet pipe is arranged at the bottom of the other side of the device shell, a guide plate is arranged below the outlet end of the water inlet pipe, and the guide plate is obliquely arranged to guide inflow sewage to the ultrasonic generator.

3. The dissolved air flotation machine according to claim 1, characterized in that: the bottom of the barrel is provided with a drain pipe, the drain pipe is provided with a one-way valve and a drain pump, and the water inlet pipe is provided with an electromagnetic valve.

4. The dissolved air flotation machine according to claim 1, characterized in that: and the inner wall of the upper end of the cylinder body is connected with a piston in a sealing and sliding manner.

5. The dissolved air flotation machine according to claim 4, characterized in that: and a limit switch is arranged at an opening at the upper end of the barrel.

6. The dissolved air flotation machine according to claim 1, characterized in that: scrape the foam mechanism and include drive assembly, locate drive hinge on the drive assembly and locate a plurality of scrapers on the drive hinge, drive assembly rotates the driving motor that the seat transmission is connected including setting up two of scraping the foam pond top and rotating the seat with one of them, and the drive hinge sets up on rotating the seat.

7. The dissolved air flotation machine according to claim 1, characterized in that: the foam scraping device is characterized in that a foam collecting groove is formed in the side wall of the foam scraping pool and comprises a vertical plate and a connecting plate connected with the side wall, a foam discharging port is formed in the outer side wall of the foam scraping pool and is located above the connecting plate and communicated with the foam collecting groove.