CN214653772U

CN214653772U - Dissolved air flotation device for sewage treatment

Info

Publication number: CN214653772U
Application number: CN202023320941.3U
Authority: CN
Inventors: 于飞
Original assignee: Nanjing Xiaoxin Environmental Design Co ltd
Current assignee: Nanjing Xiaoxin Environmental Design Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-09
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a dissolved air flotation device for sewage treatment, wherein an air inlet of a dissolved air tank is communicated with an air compressor through a pipeline, a water inlet of the dissolved air tank is communicated with a circulating pump through a pipeline, a water outlet of the dissolved air tank is communicated with an input end of a water pump through a pipeline, an output end of the water pump is communicated with a bubble uniform releasing device through a pipeline, and the bubble uniform releasing device is clamped at the upper end of a reaction tank; this device carries out the micromation to gas-liquid mixture through being annular bubble uniform release device for gas is in littleer bubble mixture gets into the reaction tank, the bubble release shower nozzle that is cyclic annular evenly distributed simultaneously from reaction tank edge simultaneous working, carry out even impact to the reaction medicament of putting in the reaction tank, make the more even of medicament mixture, a plurality of bubble release shower nozzles simultaneous working has improved the efficiency of bubble release, when a bubble release shower nozzle appears blockking up, do not influence the normal use of other bubble release shower nozzles.

Description

Dissolved air flotation device for sewage treatment

Technical Field

The utility model relates to a sewage treatment technical field specifically is a sewage treatment is with dissolving gas air supporting device.

Background

In recent years, with the shortage of water resources and the increasing problem of water pollution, wastewater treatment and purification technologies have received more and more attention. As an important water treatment technology, air-float water purification is rapidly developed in China. The dissolved air flotation is one of air flotation, and is characterized by utilizing the characteristic that water has different solubility under different pressures to pressurize and aerate all or part of water to be treated (or treated) to increase the air dissolving amount in the water, then adding a coagulant to separate out air in normal-pressure sewage in the form of small bubbles, simultaneously adhering impurity flocs and carrying the impurity flocs to rise to the water surface to realize solid-liquid separation. The dissolved air flotation is suitable for treating water with low turbidity, high chroma, high organic matter content, low oil content, low surface active matter content or rich algae. The existing dissolved air flotation device has the following problems in practical use:

1. the dissolved air releaser has low efficiency, low bubble generation effect and easy blockage.

2. The existing air flotation agent has large dosage, but the mixing is not uniform enough, so that the utilization rate is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewage treatment is with dissolving gas air supporting device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a dissolved air flotation device for sewage treatment comprises a dissolved air tank and a reaction tank, wherein an air inlet of the dissolved air tank is communicated with an air compressor through a pipeline, a water inlet of the dissolved air tank is communicated with a circulating pump through a pipeline, a water outlet of the dissolved air tank is communicated with an input end of a water pump through a pipeline, an output end of the water pump is communicated with an even bubble release device through a pipeline, and the even bubble release device is clamped at the upper end of the reaction tank;

the upper end opening of reaction tank is circular, bubble uniform release device is including laminating and the annular tube of reaction tank upper edge, equal fixed mounting is equipped with the locating plate around, about the lateral surface of annular tube, the locating plate lower extreme is laminated on the outer wall of reaction tank, the even fixed mounting of medial surface of annular tube is equipped with the bubble release shower nozzle.

Preferably, an arc-shaped reinforcing rod is fixedly connected between adjacent bubble release nozzles, and the inner side end of each bubble release nozzle inclines downwards by 45 degrees and extends into the reaction tank.

Preferably, the bubble release nozzle comprises a cylindrical shell fixedly inserted in the inner wall of the annular tube, a conical tube is fixedly assembled on the left side of the inner cavity of the cylindrical shell, the thin end on the left side of the conical tube is communicated with the annular tube through a pipeline, the atomizing nozzle is fixedly inserted in the middle of the right side face of the cylindrical shell, and the bubble micronizing device is fixedly assembled in the middle of the inner cavity of the cylindrical shell.

Preferably, the bubble micronizing device comprises a ring body fixedly assembled in the inner cavity of the cylindrical shell, a cross support is fixedly assembled on the right side of the inner wall of the ring body, a metal mesh is fixedly assembled on the right side face of the ring body and attached to the cross support, a round rod is fixedly assembled in the middle of the left side face of the cross support, a needle bearing is fixedly sleeved on the outer side face of the round rod, a cutting blade is uniformly and fixedly assembled on the outer side face of the needle bearing, the surface of the cutting blade is inclined, and the inclined plane on the left side of the cutting blade faces the right end of the conical pipe.

Compared with the prior art, the beneficial effects of the utility model are that: this scheme has designed a sewage treatment is with dissolving gas air supporting device, this device carries out the micromation to gas-liquid mixture through being annular bubble even release device, make gas be littleer bubble mix and get into the reaction tank in, the bubble release shower nozzle that is cyclic annular evenly distributed simultaneously from the simultaneous working of reaction tank edge, the liquid that will contain the microbubble simultaneously pours into the reaction tank into, the reaction medicament of putting into in the reaction tank carries out even impact, make the more even of medicament mixture, a plurality of bubble release shower nozzles simultaneous working has improved the efficiency of bubble release, when a bubble release shower nozzle appears blockking up, do not influence the normal use of other bubble release shower nozzles.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the structure of the uniform bubble releasing device of the present invention;

FIG. 3 is a schematic sectional view of the structure of the bubble releasing nozzle of the present invention;

fig. 4 is a left side view of the structure of the middle bubble micronizing device of the present invention.

In the figure: the device comprises a dissolved air tank 1, an air compressor 2, a circulating pump 3, a water pump 4, a bubble uniform release device 5, a circular pipe 51, a positioning plate 52, a bubble release nozzle 53, a cylindrical shell 531, a conical pipe 532, an atomizing nozzle 533, a bubble micronizing device 534, a ring 5341, a cross support 5342, a metal mesh 5343, a circular rod 5344, a needle bearing 5345, a 5346 dividing blade, a 54 arc reinforcing rod and a reaction tank 6.

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, fig. 2, fig. 3 and fig. 4, the present invention provides a technical solution: a dissolved air flotation device for sewage treatment comprises a dissolved air tank 1 and a reaction tank 6, wherein an air inlet of the dissolved air tank 1 is communicated with an air compressor 2 through a pipeline, a water inlet of the dissolved air tank 1 is communicated with a circulating pump 3 through a pipeline, a water outlet of the dissolved air tank 1 is communicated with an input end of a water pump 4 through a pipeline, an output end of the water pump 4 is communicated with an air bubble uniform release device 5 through a pipeline, and the air bubble uniform release device 5 is clamped at the upper end of the reaction tank 6;

the upper end opening of reaction tank 6 is circular, and bubble uniform release device 5 is including laminating and the annular tube 51 of 6 upper edges of reaction tank, and the lateral surface of annular tube 51 is around, all fixed mounting has locating plate 52 about, the locating plate 52 lower extreme is laminated on the outer wall of reaction tank 6, and the even fixed mounting of medial surface of annular tube 51 has bubble release shower nozzle 53.

In this embodiment, air compressor machine 2, external power source is connected respectively to circulating pump 3 and water pump 4, through on-off control place circuit break-make, through circulating pump 3 to dissolving in the gas pitcher 1 water injection, pressurize in dissolving the gas pitcher 1 through air compressor machine 2, dissolve and install level gauge and barometer on the gas pitcher 1, be used for monitoring liquid level and atmospheric pressure, water and gas are in dissolving gas pitcher 1 intensive mixing, gas-liquid mixture passes through water pump 4 and carries in the even release 5 of bubble, final even discharge is to the reaction tank 6 in, rise in the micro-bubble reaction tank 6, adsorb oil class pollutant and tiny suspended particle at the rising in-process, come-up to the surface of water formation dross, thereby make things convenient for further sewage purification treatment.

This device carries out the micromation to gas-liquid mixture through being annular bubble uniform release device 5, make gas be in littleer bubble mixture gets into reaction tank 6, the bubble release shower nozzle 53 that is annular evenly distributed simultaneously from 6 marginal simultaneous workings in reaction tank, simultaneously with the liquid injection reaction tank 6 that contains the microbubble, carry out even impact to the reaction medicament of putting into in reaction tank 6, make the medicament mix more evenly, a plurality of bubble release shower nozzles 53 synchronous working has improved the efficiency of bubble release, when a bubble release shower nozzle 53 appears blockking up, do not influence other bubble release shower nozzles 53's normal use.

Arc reinforcing rod 54 is fixedly connected between adjacent bubble release shower nozzles 53, and the inboard end downward sloping 45 degrees of bubble release shower nozzle 53 extends to in the reaction tank 6, and the bubble release shower nozzle 53 that the slope set up has improved the degree of depth of pouring into the gas-liquid mixture into the reaction tank 6 for the power that produces when the gas-liquid mixture pours into has a bigger influence to the solution in the reaction tank 6, promotes the stirring effect to the reaction medicament of puting in the reaction tank.

The bubble release nozzle 53 comprises a cylindrical shell 531 fixedly inserted in the inner wall of the annular pipe 51, a conical pipe 532 is fixedly assembled on the left side of the inner cavity of the cylindrical shell 531, the thin end on the left side of the conical pipe 532 is communicated with the annular pipe 51 through a pipeline, an atomizing nozzle 533 is fixedly inserted in the middle of the right side surface of the cylindrical shell 531, and a bubble micronizing device 534 is fixedly assembled in the middle of the inner cavity of the cylindrical shell 531.

The gas-liquid mixture enters the cylindrical housing 531, passes through the conical pipe 532, and then encounters the bubble micronizing device 534, the bubble micronizing device 534 cuts the gas-liquid mixture, so that finer bubbles are generated inside the gas-liquid mixture under severe impact, and the fine bubbles are sprayed out from the atomizing nozzle 533 along with the gas-liquid mixture.

The bubble micronizing device 534 comprises a ring body 5341 fixedly assembled in the inner cavity of the cylindrical shell 531, a cross support 5342 is fixedly assembled on the right side of the inner wall of the ring body 5341, a metal mesh 5343 is fixedly assembled on the right side of the ring body 5341, the metal mesh 5343 is attached to the cross support 5342, a round rod 5344 is fixedly assembled in the middle of the left side of the cross support 5342, a needle bearing 5345 is fixedly sleeved on the outer side of the round rod 5344, split blades 5346 are uniformly and fixedly assembled on the outer side of the needle bearing 5345, the surfaces of the split blades 5346 are inclined, and the left inclined surface of the split blades 5346 faces the right end of the conical pipe 532.

As shown in fig. 4, the splitter blade 5346 is similar to a fan blade, and the blade is designed to be inclined, so that the gas-liquid mixture impacts on the inclined side surface of the splitter blade 5346, the splitter blade 5346 starts to rotate by the impact force of the gas-liquid mixture, the gas-liquid mixture is primarily cut by the rotating splitter blade 5346, and the primarily cut gas-liquid mixture is secondarily split after encountering the metal mesh 5343, so that the gas-liquid mixture generates tiny bubbles inside under severe impact.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a sewage treatment is with dissolving gas air supporting device, includes dissolves gas pitcher (1) and reaction tank (6), its characterized in that: the air inlet of the dissolved air tank (1) is communicated with an air compressor (2) through a pipeline, the water inlet of the dissolved air tank (1) is communicated with a circulating pump (3) through a pipeline, the water outlet of the dissolved air tank (1) is communicated with the input end of a water pump (4) through a pipeline, the output end of the water pump (4) is communicated with a bubble uniform releasing device (5) through a pipeline, and the bubble uniform releasing device (5) is clamped at the upper end of a reaction tank (6);

the upper end opening of reaction tank (6) is circular, bubble uniform release device (5) are including laminating and reaction tank (6) upper edge's annular tube (51), all fixed mounting is equipped with locating plate (52) around, about the lateral surface of annular tube (51), locating plate (52) lower extreme is laminated on the outer wall of reaction tank (6), the even fixed mounting of medial surface of annular tube (51) is equipped with bubble release shower nozzle (53).

2. The dissolved air flotation device for sewage treatment as claimed in claim 1, wherein: an arc-shaped reinforcing rod (54) is fixedly connected between the adjacent bubble release nozzles (53), and the inner side ends of the bubble release nozzles (53) incline downwards by 45 degrees and extend into the reaction tank (6).

3. The dissolved air flotation device for sewage treatment as claimed in claim 2, wherein: the bubble release sprayer (53) comprises a cylindrical shell (531) fixedly inserted in the inner wall of the annular pipe (51), a conical pipe (532) is fixedly assembled on the left side of the inner cavity of the cylindrical shell (531), the thin end on the left side of the conical pipe (532) is communicated with the annular pipe (51) through a pipeline, an atomizing sprayer (533) is fixedly inserted in the middle of the right side face of the cylindrical shell (531), and a bubble micronizing device (534) is fixedly assembled in the middle of the inner cavity of the cylindrical shell (531).

4. The dissolved air flotation device for sewage treatment as claimed in claim 3, wherein: the bubble micronizing device (534) comprises a ring body (5341) fixedly assembled in an inner cavity of a cylindrical shell (531), a cross support (5342) is fixedly assembled on the right side of the inner wall of the ring body (5341), a metal net (5343) is fixedly assembled on the right side face of the ring body (5341), the metal net (5343) is attached to the cross support (5342), a round rod (5344) is fixedly assembled in the middle of the left side face of the cross support (5342), a needle bearing (5345) is fixedly assembled on the outer side face of the round rod (5344), split blades (5346) are uniformly and fixedly assembled on the outer side face of the needle bearing (5345), the surfaces of the split blades (5346) are inclined, and the inclined face of the left side of the split blades (5346) faces the right end of the conical pipe (532).