CN202717601U - Air-breathing type dissolved air flotation device for water pump - Google Patents
Air-breathing type dissolved air flotation device for water pump Download PDFInfo
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- CN202717601U CN202717601U CN 201220369050 CN201220369050U CN202717601U CN 202717601 U CN202717601 U CN 202717601U CN 201220369050 CN201220369050 CN 201220369050 CN 201220369050 U CN201220369050 U CN 201220369050U CN 202717601 U CN202717601 U CN 202717601U
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Abstract
The utility model relates to a water treatment device, and in particular relates to a dissolved air flotation device. The air-breathing type dissolved air flotation device for a water pump is characterized by comprising a water inlet valve which is communicated with an air-breathing type centrifugal pump; a gas-liquid mixing device is arranged at the front end of the air-breathing type centrifugal pump; the air-breathing type centrifugal pump is communicated with the inlet end of a gas-liquid separation dissolved air tank; and the outlet end of the gas-liquid separation dissolved air tank is communicated with a pressure adjustment valve and a dissolved air releaser in an air flotation tank by a pressure control valve. The dissolved air flotation device has the advantages that a problem caused by operation of gas-liquid two phases of the centrifugal pump is solved; and the generated bubbles are small, uniform in granularity, high in density, stable in flotation and small in liquid disturbance, and therefore, the air-breathing type dissolved air flotation device is particularly suitable for solid-liquid separation of loosened flocculating constituents and small suspended solids, relatively simple in technological process and equipment and convenient to manage and maintain.
Description
Technical field
The utility model relates to a kind of water treatment device, relates in particular to a kind of dissolved air flotation device.
Background technology
The pressure air-dissolving air-float method is that Xiang Shuizhong injects a large amount of microbubbles, density in itself and water or the waste water is sticked close to solid or the contaminant particle of water, form density less than the air float body of water, under the effect of buoyancy, float up to the water surface and form scum silica frost, carry out a kind of water technology that solid-liquid or liquid liquid separate.Be widely used in refining oil, the processing of the processing of the trade effluent such as chemical industry, papermaking, process hides, printing and dyeing and urban life tap water, sanitary sewage.
The pressure air-dissolving air-float method is different according to the mode of molten gas, and its system roughly is divided into three kinds; Be that water pump air suction type, jet are held gas formula, air compressor machine Gas feeding under the arm.Wherein water pump air suction type air dissolving system device is simple, does not need to establish in addition the air feed equipment, directly sucks a certain proportion of air by air suction pipe, enters pressure air-dissolving tank (pipe) and carries out molten gas.At present, the existing gas-liquid mixed turbulence pump of low discharge scope can be resolved, but large flow (〉=45m3/h) air dissolving system does not have suitable pump type to select yet.Early period, people once adopted common centrifugal water pump, utilize the negative pressure air amount of pump inlet place, but its shortcoming were: the difficult control of inspiratory capacity, the water pump impeller damage of easily cavitating, it is unstable that water pump is held the fate row under the arm.According to the related documents introduction: the air that impeller pump sucks, with the change of motion operating mode, the movement locus of the bubble that produces slightly changes; When the air entrainment of delivery medium reaches finite concentration, always bubble is detained near back shroud of impeller and blade exit non-working surface first, increase with aeration concentrater, progressively develop near the runner middle front side of vane and front shroud; Large flow operation condition has certain souring to being detained bubble, and low discharge operation condition bubble trapping phenomena is serious, and this moment, the phenomenon that stops can appear in water pump.Therefore, cause air dissolving system job insecurity and efficient very low.At present this method few employing to the utmost.
Summary of the invention
The purpose of this utility model is to avoid the deficiencies in the prior art that a kind of water pump air suction type dissolved air flotation device is provided.Solve the problem that the operation of impeller pump gas-liquid two-phase exists, so that centrifugal water pump air suction type air soluble method becomes possibility.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of water pump air suction type dissolved air flotation device, its principal feature are to include water intaking valve and are communicated with the air suction type impeller pump, are provided with Liqiud-gas mixing device at the front end of air suction type impeller pump; The centrifugal pump outlet of air suction type is communicated with the entrance end of gas-liquid separation dissolving, and the pressure-regulating valve that is provided with in the exit end of gas-liquid separation dissolving and the air flotation pool is communicated with dissolved air release.
Described water pump air suction type dissolved air flotation device, described air suction type impeller pump are that the main shaft at horizontal centrifugal pump impeller front end is provided with inducer impeller inducer; Inducer impeller inducer is axial-flow impeller.
Described water pump air suction type dissolved air flotation device, described Liqiud-gas mixing device two ends are provided with ring flange, and an end is connected with the air suction type impeller pump, and the port of the other end is provided with inlet mouth and is connected with inlet pipe, in the port of the other end, be provided with trunnion, be communicated with water intaking valve.
Described water pump air suction type dissolved air flotation device, the gas that described Liqiud-gas mixing device sucks is 6%-10%.
Described water pump air suction type dissolved air flotation device is characterized in that in the described gas-liquid separation dissolving filler cascade ring or Pall ring being housed, and its pressure is 0.3-0.4MPa.
Control pressure is at 3-4kg/cm in the gas-liquid separation dissolving
2(0.3-0.4MPa), the fillers such as cascade ring or Pall ring are housed in the gas-liquid separation dissolving, for increasing the contact surface area of air amount and water, accelerate the dissolving of air in water.In air flotation pool.By dissolved air release the dissolved air water in the gas-liquid separation dissolving is discharged by dissolved air release, because the pressure of water lowers suddenly, so oversaturated air will be from water discharges with the form of the small bubbles of 30-50 micron diameter, the suspended substance of these microbubbles in water is combined and formed density less than the air float body of water, under the effect of buoyancy, float up to the water surface and form scum silica frost, strike off by slag scraper again, thereby reach the effect of removing suspended substance in the water.
The beneficial effects of the utility model:
Inducer impeller inducer of the present utility model belongs to axial-flow impeller, during with the pump high speed rotating, does not have the centrifugal action that promotes gas and liquid separation.Like this, gas-liquid mixed media flows to impeller pump simultaneously, and the lift of its generation can reduce the net positive suction head of pump impeller, improves its cavitation resistive property.Fluid has preferably souring to isolated bubble in the centrifugal pump impeller simultaneously, makes it be difficult for being trapped in the impeller, and the stability that makes impeller pump hold the fate row under the arm is increased.
Liqiud-gas mixing device adopts Venturi tube effect, and the negative pressure that the flow rate of liquid that utilizes pump to suck produces sucks a certain proportion of gas, and mixes and send in the pump.Consider to suck the ratio of gas, and reduce as far as possible its energy expenditure, its throat pipe diameter is more smaller than pump inlet diameter.
Under the pressurized conditions, the solubleness of air is large, and is many for the number of bubbles of air supporting, can guarantee air flotation effect; The bubble that produces is fine, epigranular, density is large and floating is stable, and is small to liquid perturbation, therefore is specially adapted to the solid-liquid separation to loose flocs unit, fine particle; Technical process and comparison in equipment are simple, are convenient to management maintenance.And input and the running cost of equipment greatly reduce.
Description of drawings
Fig. 1: be traditional air compressor machine air-dissolving apparatus schematic diagram;
Fig. 2: be the utility model device schematic diagram;
Fig. 3: be the structural representation of the utility model air suction type impeller pump.
Among the figure: 1. intake valve; 2. Liqiud-gas mixing device; 3. air suction type impeller pump; 3-1. horizontal centrifugal pump impeller; 3-2. main shaft; 3-3. inducer impeller inducer; 4. gas-liquid separation dissolving; 5. pressure controlled valve; 6. pressure-regulating valve: 7. dissolved air release.
Embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not be used to limiting scope of the present utility model.
Embodiment 1: a kind of water pump air suction type dissolved air flotation device, see Fig. 2. and include intake valve 1 and be communicated with air suction type impeller pump 3, be provided with Liqiud-gas mixing device 2 at the front end of air suction type impeller pump; The outlet of air suction type impeller pump 3 is communicated with the entrance end of gas-liquid separation dissolving 4, and the exit end of gas-liquid separation dissolving 4 is communicated with the pressure-regulating valve 6, the dissolved air release 7 that are provided with in the air flotation pool by pressure controlled valve 5 and is communicated with.Described air suction type impeller pump 3 is to be provided with inducer impeller inducer 3-3 at the main shaft 3-2 of horizontal centrifugal pump impeller 3-1 front end; Inducer impeller inducer is axial-flow impeller.
Described Liqiud-gas mixing device one end is provided with ring flange 2-1, is connected with the air suction type impeller pump.The port of the other end is provided with inlet flange 2-4, and the inlet flange screw is used for connecting inlet pipe.In the port of the other end, be provided with trunnion 2-3, be used for producing Venturi tube effect.See Fig. 3 for details.
The gas that described Liqiud-gas mixing device sucks is 6%-10%.
In the described gas-liquid separation dissolving filler cascade ring or Pall ring are housed, its pressure is 3-4kg/cm
2(0.3-0.4MPa).
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. water pump air suction type dissolved air flotation device is characterized in that including water intaking valve and is communicated with the air suction type impeller pump, is provided with Liqiud-gas mixing device at the front end of air suction type impeller pump; The centrifugal pump outlet of air suction type is communicated with the entrance end of gas-liquid separation dissolving, and the exit end of gas-liquid separation dissolving is communicated with the pressure-regulating valve that is provided with in the air flotation pool by pressure controlled valve and is communicated with dissolved air release.
2. water pump air suction type dissolved air flotation device as claimed in claim 1 is characterized in that described air suction type impeller pump is that main shaft at horizontal centrifugal pump impeller front end is provided with inducer impeller inducer; Inducer impeller inducer is axial-flow impeller.
3. water pump air suction type dissolved air flotation device as claimed in claim 1, it is characterized in that described Liqiud-gas mixing device two ends are provided with ring flange, one end is connected with the air suction type impeller pump, the port of the other end is provided with inlet mouth and is connected with inlet pipe, in the port of the other end, be provided with trunnion, be communicated with water intaking valve.
4. water pump air suction type dissolved air flotation device as claimed in claim 1 is characterized in that the gas that described Liqiud-gas mixing device sucks is 6%-10%.
5. water pump air suction type dissolved air flotation device as claimed in claim 1 is characterized in that in the described gas-liquid separation dissolving filler cascade ring or Pall ring being housed, and its pressure is 0.3-0.4MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220369050 CN202717601U (en) | 2012-07-28 | 2012-07-28 | Air-breathing type dissolved air flotation device for water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220369050 CN202717601U (en) | 2012-07-28 | 2012-07-28 | Air-breathing type dissolved air flotation device for water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202717601U true CN202717601U (en) | 2013-02-06 |
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ID=47619430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220369050 Expired - Fee Related CN202717601U (en) | 2012-07-28 | 2012-07-28 | Air-breathing type dissolved air flotation device for water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202717601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108083461A (en) * | 2017-12-21 | 2018-05-29 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of micro-nano oxygen increasing equipment |
-
2012
- 2012-07-28 CN CN 201220369050 patent/CN202717601U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108083461A (en) * | 2017-12-21 | 2018-05-29 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of micro-nano oxygen increasing equipment |
| CN108083461B (en) * | 2017-12-21 | 2024-01-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Micro-nano oxygenation equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GANSU GOLDEN BRIGE WATER TECHNOLOGY (GROUP) CO., L Free format text: FORMER NAME: GANSU JINQIAO WATER TREATMENT TECHNOLOGY ENGINEERING LTD. |
|
| CP03 | Change of name, title or address |
Address after: 730030, 6 floor, Xin Sheng building, 279 Jiuquan Road, Chengguan District, Gansu, Lanzhou Patentee after: Gansu Jinqiao water science and Technology (Group) Limited by Share Ltd Address before: 730030, Lanzhou Central Plaza, Gansu, 6 floor Patentee before: Gansu Jinqiao Water Treatment Technique Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 730030, 6 floor, Xin Sheng building, 279 Jiuquan Road, Chengguan District, Gansu, Lanzhou Patentee after: Gansu Jinqiao water technology (Group) Co., Ltd. Address before: 730030, 6 floor, Xin Sheng building, 279 Jiuquan Road, Chengguan District, Gansu, Lanzhou Patentee before: Gansu Jinqiao water science and Technology (Group) Limited by Share Ltd |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20180728 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |