CN207419680U - A kind of modified polluted underground water extraction device - Google Patents
A kind of modified polluted underground water extraction device Download PDFInfo
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- CN207419680U CN207419680U CN201720956926.7U CN201720956926U CN207419680U CN 207419680 U CN207419680 U CN 207419680U CN 201720956926 U CN201720956926 U CN 201720956926U CN 207419680 U CN207419680 U CN 207419680U
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Abstract
The utility model discloses a kind of modified polluted underground water extraction device, which includes riser and the rubber ring for being arranged on riser upper end.For the device also comprising extraction well and the well immersible pump that is arranged in extraction well, the pump housing of immersible pump is equipped with water inlet, and motor is equipped in the immersible pump under water inlet.Riser is nested with outside the well immersible pump in extraction well.Riser is thin-wall stainless steel, and it is 1~3cm to promote the distance between inside pipe wall and immersible pump outer wall.Riser upper end is higher by the immersible pump pump housing 3~5cm of water inlet, and lower end is higher by 3~5cm of motor for submerged pump bottom.Riser upper end is equipped with rubber ring, and the length of rubber ring is 2cm, is tightly connected with riser upper end.Rubber ring is nested on the immersible pump pump housing, outside pass through pipe collar banding.Modified polluted underground water extraction device provided by the utility model can help well diving to take out more efficient, stable, reliability service and improve extracting repairing effect.
Description
Technical field
The utility model is related to a kind of contaminated site prosthetic devices, and in particular, to one kind is with can be applied to contaminated sites
The modified polluted underground water extraction device for the well diving extraction pump that lower water extracting is repaired.
Background technology
Groundwater extraction technology is a kind of common polluted underground water recovery technique, it first by immersible pump or other
Pump extracts the polluted underground water in water-bearing layer and free phase pollutant that may be present via the extraction well mounted on underground
To ground, then by water qualified discharge or make other disposal after the processing of ground water processing establishment, so as to reach direct reduction
Pollutant concentration and the purpose of reparation is realized in underground water.Groundwater extraction recovery technique is simple, easily operated, square with equipment
Just the advantages such as management.
Heavy non-aqueous phase liquids (DNAPL) are the organic substances that one kind is insoluble in water and density is more than water.Due to density ratio
Water is big and solubility is limited in underground water, is moved once there is larger amount of this kind of substance to enter underground and the underground of through a long time
It moves, often preservation is on lower floor's water barrier top plate of water-bearing layer bottom in the form of free phase for they, then slowly to underground
Water dissolution discharges and forms the pollution source of underground water.The presence of DNAPL can greatly increase the difficulty of groundwater remediation, repair
It generally requires to remove in advance during multiple.
Well is common extractor in groundwater extraction technology with immersible pump, it can be placed directly within groundwater extraction well
Interior operation, the substantially limitation from level of ground water and extracting drawdown.For well with immersible pump in slender cylinder structure, upper end is the pump housing
And water outlet, lower end are motor, centre is water inlet.Immersible pump is placed vertically along extraction well well casing inner wall during work, due to electricity
Machine in lower end so that the water inlet of the pump housing away from extracting bottom across a motor length or so distance.Directly use
When well is with immersible pump extraction stain underground water, since the water inlet of pump limits, when level of ground water is less than the water inlet of the pump housing in well
During height, contaminated underground water is difficult to be further continued for extracting out, so as to influence to extract repairing effect to a certain extent.In addition,
Underground water is directly to enter the pump housing through water inlet to be pumped out again to ground in extractive process, in extraction well with immersible pump lower end motor
The underground water of contact is substantially static not to be flowed, and in the region toward contact meeting deposition fraction silt, so as to which motor operation can be caused
The heat generated in the process cannot be taken out of by subsurface flow in time, and cause system temperature rise and influence the operation effect of immersible pump
Fruit even results in motor overheating shutdown.
For there are the contaminated site of DNAPL, if directly extracted using well with immersible pump, as the DNAPL in extraction well
When thickness is less than water inlet open height, the liquid extracted is substantially underground water, it is difficult to which extracting is to DNAPL and can cause DNAPL
In extraction well bottom deposit；When DNAPL thickness is more than water inlet open height in well, with extracting into guild in water-bearing layer bottom
A DNAPL " funnel " is formed, since funnel top and water-bearing layer bottom are significantly spaced there are one, so can also be reduced
DNAPL flows into the hydraulic gradient of extraction well so that extracting DNAPL effects are deteriorated, and finally influence extracting repairing effect.
Utility model content
The purpose of this utility model is to provide a kind of device for contaminated sites groundwater extraction reparation, for existing well
With immersible pump polluted underground water extract repair application present on deficiency, can help well diving pumping it is more efficient, stable, can
By running and improving extracting repairing effect.
In order to achieve the above object, the utility model provides a kind of modified polluted underground water extraction device, for field
Ground contamination groundwater extraction reparation, wherein, the extraction device includes riser and the rubber for being arranged on riser upper end
Ring.
Above-mentioned modified polluted underground water extraction device, wherein, the device also comprising extraction well and is arranged on
Well immersible pump in extraction well, the pump housing of immersible pump are equipped with water inlet, and motor, diving are equipped in the immersible pump under water inlet
The top of pump is equipped with water outlet；The riser is nested with outside the well immersible pump in extraction well.
Above-mentioned modified polluted underground water extraction device, wherein, the riser be thin-wall stainless steel, riser
The distance between inner wall and immersible pump outer wall are 1~3cm.
Above-mentioned modified polluted underground water extraction device, wherein, the riser, the upper end is higher by the immersible pump pump housing
3~5cm of water inlet, lower end are higher by 3~5cm of motor for submerged pump bottom.
Above-mentioned modified polluted underground water extraction device, wherein, the riser, the upper end is equipped with rubber ring, institute
The length for the rubber ring stated is 2cm, is tightly connected with riser upper end.
Above-mentioned modified polluted underground water extraction device, wherein, the rubber ring is nested on the immersible pump pump housing,
Outside passes through pipe collar banding.
Above-mentioned modified polluted underground water extraction device, wherein, underground water or DNAPL during the diving pump operation
Class substance enters out of riser bottom interior wall and motor for submerged pump spacer ring, and rises to immersible pump water inlet along the gap
By diving pumped.
Modified polluted underground water extraction device provided by the utility model has the following advantages：
(1) the actual water inlet position of well immersible pump is effectively reduced by riser, extraction well can be significantly improved
Interior maximum stage drawdown increases extracting hydraulic gradient, realizes preferably extracting repairing effect；
(2) for there are the place that DNAPL pollutes, which can effectively prevent DNAPL substances in extracting bottom
Aggregation, it is quick to remove the DNAPL substances flowed into extraction well and improve DNAPL flowing water power gradients into extraction well, it improves
DNAPL extraction effects；
(3) underground water intake tunnel is changed to the gap of riser and motor for submerged pump wall by former water inlet when extracting is run,
Underground water continuously flows in the gap, can play lasting cooling motor, improves diving the way and ensures immersible pump
The effect of reliable and stable operation.
Description of the drawings
Fig. 1 for the polluted underground water extraction device of no riser extracting situation schematic diagram.
Fig. 2 is the structure diagram of the modified polluted underground water extraction device of the installation riser of the utility model.
Fig. 3 is less than the schematic diagram of water inlet for the polluted underground water extraction device DNAPL height of no riser.
Fig. 4 is higher than the schematic diagram of water inlet for the polluted underground water extraction device DNAPL height of no riser.
Fig. 5 is highly down to the schematic diagram of water inlet for the polluted underground water extraction device DNAPL of no riser.
Fig. 6 is the structural representation of the modified polluted underground water extraction device of the installation DNAPL risers of the utility model
Figure.
Specific embodiment
Specific embodiment of the present utility model is further described below in conjunction with attached drawing.
Modified polluted underground water extraction device provided by the utility model, for contaminated sites groundwater extraction reparation,
The device includes riser 5 and the rubber ring 3 for being arranged on 5 upper end of riser.
The device also includes extraction well 1 and the well immersible pump being arranged in extraction well 1, is set on the pump housing 2 of immersible pump
There is a water inlet 4, motor 6 is equipped in the immersible pump under water inlet 4, the top of immersible pump is equipped with water outlet 7.
Riser 5 is nested with outside the well immersible pump in extraction well 1.Riser 5 be thin-wall stainless steel, riser 5
The distance between inner wall and immersible pump outer wall are 1~3cm.5 upper end of riser is higher by 3~5cm than 2 water inlet 4 of the immersible pump pump housing,
Lower end is higher by 6 3~5cm of bottom of motor for submerged pump.
5 upper end of riser is equipped with rubber ring 3, and the length of rubber ring 3 is 2cm, is tightly connected with 5 upper end of riser.Rubber
Rubber ring 3 is nested on the immersible pump pump housing 2, outside pass through pipe collar banding.
Modified polluted underground water extraction device provided by the utility model, when diving under water pump operation underground water or
DNAPL classes substance enters in the spacer ring from 5 bottom interior wall of riser with motor for submerged pump 6, and rises to diving along the gap
Pump water inlet mouth 4 is by diving pumped.
Modified polluted underground water extraction device provided by the utility model is done with reference to embodiment and is further retouched
It states.
Embodiment 1：The extracting of phase pollutant is dissolved in underground water.
5 device of underground water riser is added on the outside of well immersible pump.
As shown in Figure 1, in this case, groundwater level is higher than the water inlet 4 of the well immersible pump pump housing 2 during beginning
It puts.After extracting after a while, form groundwater level funnel, the lowest water level that can reach in extraction well 1 at most with
Well is almost maintained an equal level with immersible pump water inlet 4, it is impossible to further deepening of ground water table is formed in well, also cannot further be increased
The hydraulic gradient that underground water is added to flow into extraction well 1.
As shown in Fig. 2, in this case, riser 5 is mounted with outside well immersible pump, riser 5 is a thin-wall stainless steel
Pipe, upper end are higher by 2cm than the water inlet 4 of the immersible pump pump housing 2, and lower end is higher by the bottom 3cm of motor for submerged pump 6,5 inner wall of riser
The 2cm on the outside of well immersible pump.There is the rubber ring 3 of one section of 2cm length in 5 upper end of riser, seals and connects with 5 upper end of riser
It connects, rubber ring 3 is sleeved on the immersible pump pump housing 2 during installation, outside pipe collar banding.Dive under water pump operation when, underground water is from riser 5
Bottom interior wall rises to immersible pump water inlet 4 by diving pumping with entering in the spacer ring of motor for submerged pump 6 along the gap
Go out.The installation of riser 5 effectively reduces the actual water inlet position of well immersible pump, can significantly improve in extraction well 1
Maximum stage drawdown increases extracting hydraulic gradient, realizes preferably extracting repairing effect.
Embodiment 2：The extracting of DNAPL pollutants in underground water.
5 device of DNAPL risers is added on the outside of well immersible pump.
As shown in figure 3, in this case, water-bearing layer DNAPL thickness is less than well 2 water inlet of the immersible pump pump housing, 4 height.
Under this situation, immersible pump direct extraction is very limited to the removal effect of DNAPL.
As shown in figure 4, in this case, water-bearing layer DNAPL thickness has been higher by the height of 2 water inlet 4 of the well immersible pump pump housing
Degree.In this case, in the initial extraction stage, immersible pump has preferable extraction effect to DNAPL's.But with pushing away for time
It moves, can gradually form DNAPL liquid level funnels situation 3, the minimum DNAPL liquid levels that can reach in extraction well 1 are at most used latent with well
2 water inlet 4 of pump body almost maintains an equal level, it is impossible to deeper DNAPL liquid levels are formed in well, also cannot further be increased
DNAPL flows into the hydraulic gradient in extraction well 1, shown in Figure 5.
As shown in fig. 6, in this case, be mounted with DNAPL risers 5 outside well immersible pump, riser 5 for a thin-walled not
Become rusty steel pipe, and upper end is higher by 2cm than the water inlet 4 of the immersible pump pump housing 2, and lower end is higher by the bottom 2cm of motor for submerged pump 6, riser 5
Inner wall 1cm on the outside of well immersible pump.There is the rubber ring 3 of one section of 2cm length in 5 upper end of riser, is sealed with 5 upper end of riser
Connection, rubber ring 3 is sleeved on the immersible pump pump housing 2 during installation, outside pipe collar banding.Dive under water pump operation when, DNAPL is from riser
5 bottom interior walls rise to immersible pump water inlet 4 by diving pumping with entering in the spacer ring of motor for submerged pump 6 along the gap
Go out.The installation of riser 5 can effectively prevent aggregation of the DNAPL substances in 1 bottom of extraction well, and quick removal flows into extraction well 1
Interior DNAPL substances simultaneously further reduce the minimum liquid level that DNAPL can reach in extraction well 1, improve DNAPL to extraction well 1
Interior flowing water power gradient improves DNAPL extraction effects.
Modified polluted underground water extraction device provided by the utility model, with device is simple, installation is easy, maintenance side
Just, the advantages such as significant effect.By being set with riser 5 outside well immersible pump, it can effectively reduce well immersible pump and extract
Actual water inlet position in well 1 significantly improves the maximum stage drawdown in extraction well 1, increases extracting hydraulic gradient；For depositing
Aggregation of the DNAPL substances in 1 bottom of extraction well can be effectively prevented in the place of DNAPL pollutions, and quick removal flows into extraction well 1
Interior DNAPL substances simultaneously improve DNAPL flowing water power gradients into extraction well 1；The installation of riser 5 changes extraction well 1
The flow direction of interior liquid, extractive process fluid can play lasting cooling motor 6, improve diving the way and ensure to dive
The effect of the reliable and stable operation of water pump.
Although the content of the utility model is discussed in detail by above preferred embodiment, but it should be appreciated that on
The description stated is not considered as the limitation to the utility model.After those skilled in the art have read the above, for
A variety of modifications and substitutions of the utility model all will be apparent.Therefore, the scope of protection of the utility model should be by appended
Claim limit.
Claims (5)
1. a kind of modified polluted underground water extraction device, for contaminated sites groundwater extraction reparation, which is characterized in that described
Extraction device includes riser and the rubber ring for being arranged on riser upper end；The device also comprising extraction well and is set
Put the well immersible pump in extraction well, the pump housing of immersible pump is equipped with water inlet, and motor is equipped in the immersible pump under water inlet；
The riser is nested with outside the well immersible pump in extraction well.
2. modified polluted underground water extraction device according to claim 1, which is characterized in that the riser is not
Become rusty steel pipe, and it is 1~3cm to promote the distance between inside pipe wall and immersible pump outer wall.
3. modified polluted underground water extraction device according to claim 2, which is characterized in that the riser,
Upper end is higher by the immersible pump pump housing 3~5cm of water inlet, and lower end is higher by 3~5cm of motor for submerged pump bottom.
4. modified polluted underground water extraction device according to claim 3, which is characterized in that the riser,
Upper end is equipped with rubber ring, and the length of the rubber ring is 2cm, is tightly connected with riser upper end.
5. modified polluted underground water extraction device according to claim 4, which is characterized in that the rubber ring is nested with
On the immersible pump pump housing, outside pass through pipe collar banding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720956926.7U CN207419680U (en) | 2017-08-02 | 2017-08-02 | A kind of modified polluted underground water extraction device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720956926.7U CN207419680U (en) | 2017-08-02 | 2017-08-02 | A kind of modified polluted underground water extraction device |
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| CN207419680U true CN207419680U (en) | 2018-05-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268770A (en) * | 2017-08-02 | 2017-10-20 | 上海格林曼环境技术有限公司 | A kind of modified polluted underground water extraction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268770A (en) * | 2017-08-02 | 2017-10-20 | 上海格林曼环境技术有限公司 | A kind of modified polluted underground water extraction device |
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