CN210562400U - Water filter pipe and underground water monitoring well device - Google Patents
Water filter pipe and underground water monitoring well device Download PDFInfo
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- CN210562400U CN210562400U CN201920618412.XU CN201920618412U CN210562400U CN 210562400 U CN210562400 U CN 210562400U CN 201920618412 U CN201920618412 U CN 201920618412U CN 210562400 U CN210562400 U CN 210562400U
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Abstract
According to the utility model, the water filter pipe and the groundwater monitoring well device are arranged at the bottom of the groundwater sampling well, and comprise a pipe body, a plurality of through holes are arranged at the lower part of the pipe wall, and the pipe wall is provided with an upper part and a lower part; at least one filter layer wrapped on the lower part of the pipe wall; and the water stop ring is arranged on the upper part of the pipe wall in a surrounding way, the size of the filtering hole in the filtering layer is smaller than that of the through hole, and the water stop ring is made of a material which can expand when meeting water. Because the utility model discloses a strainer sets up the bottom at groundwater sampling well for carry out water quality testing to the groundwater of specific stratum, strainer has the filter layer of at least one deck parcel on the body, is used for filtering earth granule and suspended solid, and need not fill the filter layer between strainer and the wall of a well, has not only practiced thrift material and transportation recruitment cost, but also has realized removing the groundwater well after using very conveniently, does not influence the follow-up development work in place.
Description
Technical Field
The utility model belongs to the environmental protection field, concretely relates to novel strainer, groundwater monitoring well device.
Background
Along with the rapid development of field environment investigation, groundwater environment investigation and restoration and other work, the construction efficiency, technical requirements and economy of groundwater monitoring wells and extraction wells are higher and higher.
The traditional well construction method generally comprises the steps of firstly drilling to obtain a well hole, then placing a well pipe and a water filter pipe, then filling a filter layer between the water filter pipe and the well wall, filling a sealing layer between the well pipe and the well wall, and finally installing a wellhead protective cover to complete well construction.
In the investigation and restoration of polluted sites and underground water environments, the well construction method has relatively low working efficiency due to large well construction quantity, short working time and more specific requirements, and the well construction method has relatively complex operation and relatively high well construction cost due to the fact that filter layer filter materials are required for well construction; in addition, the traditional well construction method has the disadvantages that the monitoring well is always left in the field and is difficult to remove, and the subsequent utilization of the field is adversely affected when the number of the monitoring wells is large.
Patent CN107816083A discloses a filtering layer module in pit, packs the filtering layer between setting up at fixed frame's inner screen and outer filter screen, can make the well casing that permeates water of well form closely knit and regular filter layer all around, avoids appearing the filtering layer aversion and causes the drawback that gets into silt and scrap the well. The underground filtering layer module of the patent not only has slow well building efficiency, but also has large diameter of a well hole needing to be excavated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a simplify and build the well flow, improve and build well efficiency, make things convenient for the follow-up utilization in place, provide a novel strainer, groundwater monitoring well device.
The utility model provides a water filter pipe, which is arranged at the bottom of an underground water sampling well and is used for monitoring the water quality of underground water in a specific stratum, and the water filter pipe has the characteristics that the water filter pipe comprises a cylindrical pipe body and a plurality of through holes, wherein the pipe wall comprises a pipe wall upper part and a pipe wall lower part; at least one filter layer wrapped on the lower part of the pipe wall; and the water stop ring is arranged on the upper part of the pipe wall in a surrounding manner, wherein the size of the filtering hole in the filtering layer is smaller than that of the through hole, and the water stop ring is made of a material which can expand when meeting water.
The utility model provides an in the strainer, can also have such characteristic: the central line of the through hole is perpendicular to the central line of the pipe body, or the included angle between the central line of the through hole and the downward direction of the central line of the pipe body is an acute angle, or the included angle between the central line of the through hole and the upward direction of the central line of the pipe body is an acute angle.
In addition, in the utility model provides a strainer, can also have such characteristic: wherein, the pipe wall lower part includes from last upper wall part, well wall part and lower wall part down, and a plurality of through-holes are including setting up the last through-hole on the upper wall part respectively, setting up well through-hole on the well wall part and setting up the lower through-hole on the lower wall part, and the central line of going up the through-hole is the acute angle with the downward contained angle of body central line, and the central line of well through-hole is perpendicular with the body central line, and the central line of lower through-hole is the acute angle with the upward contained angle of body central line.
Additionally, the utility model provides an among the strainer, its characterized in that: still including having network structure's anti-blocking layer, encircle to set up in the pipe wall lower part and lie in between pipe wall and the filter layer for support the filter layer and prevent that the through-hole from blockking up, wherein, the filter layer has the multilayer, the multilayer filter layer has the same filtration pore shape, the filtration pore position of crossing in the adjacent two-layer filter layer sets up, or, the multilayer filter layer comprises the filtration pore shape's of a plurality of differences filter layer, a plurality of filter layers that have different filtration pore shapes are crossing setting, the filter layer adopts the stainless steel or the organic polymer material of low adsorptivity to make.
The utility model provides an underground water monitoring well device for the setting filters the back in the groundwater sampling well to specific stratum's groundwater, obtains the groundwater that needs to be used for the specific stratum of monitoring, has such characteristic, include: the water filter pipe comprises a plurality of tubular well pipes and water filter pipes which are sequentially communicated from top to bottom, wherein the water filter pipes are arranged at the bottom of an underground water sampling well, the bottom of the underground water sampling well is positioned in a specific stratum, and the water filter pipes are any one of the water filter pipes.
The utility model provides an underground water monitoring well device for the setting filters the back in the groundwater sampling well to specific stratum's groundwater, obtains the groundwater that needs to be used for the specific stratum of monitoring, has such characteristic, include: from last to a plurality of well casings and the strainer that are the tube-shape, prevent blocking up layer and the seal ring that communicate in proper order down, wherein, the strainer sets up the shaft bottom at groundwater sampling well, and this shaft bottom is arranged in specific stratum, and the strainer includes: the body of tube-shape has the pipe wall, is provided with a plurality of through-holes on the pipe wall, and the filter layer of at least one deck parcel on the pipe wall, the size of filtration pore is less than the size of through-hole in the filter layer, has network structure's anti-blocking layer, encircles the setting and just is located between pipe wall and the filter layer on the pipe wall for support the filter layer and prevent that the through-hole from blockking up, and the seal ring encircles and sets up the lower extreme that is located the well casing surface on strainer upper portion, and the seal ring adopts the material.
The utility model provides an among the groundwater monitoring well device, can also have such characteristic: the central line of the through hole is perpendicular to the central line of the pipe body, or the included angle between the central line of the through hole and the downward direction of the central line of the pipe body is an acute angle, or the included angle between the central line of the through hole and the upward direction of the central line of the pipe body is an acute angle.
Additionally, in the utility model provides an among the groundwater monitoring well device, can also have such characteristic: wherein, the pipe wall includes from last upper wall part, well wall part and lower wall part down, and a plurality of through-holes are including setting up the last through-hole on the upper wall part respectively, setting up well through-hole on the well wall part and setting up the lower through-hole on the lower wall part, and the central line of going up the through-hole is the acute angle with the downward contained angle of body central line, and the central line of well through-hole is perpendicular with the body central line, and the central line of lower through-hole is the acute angle with the upward contained angle of body central line.
Additionally, in the utility model provides an among the groundwater monitoring well device, can also have such characteristic: the filter layers are provided with a plurality of layers, the plurality of layers have the same filter hole shape, the filter hole positions in the two adjacent layers are arranged in a staggered mode, or the plurality of layers are formed by a plurality of filter layers with different filter hole shapes, the filter layers with different filter hole shapes are arranged in a crossed mode, and the filter layers are made of stainless steel with low adsorbability or organic high polymer materials.
A construction method of a modular underground water monitoring well is characterized by comprising the following steps:
selecting the position of an underground water monitoring well, selecting a proper drilling method according to the geological structure of a soil layer, and starting the drilling operation of the monitoring well, wherein the aperture of the monitoring well is larger than the sum of the outer diameter of a well pipe and the thicknesses of 2 water stop rings; completing the drilling operation of the monitoring well when the drilling reaches a preset depth below the water-taking layer; sequentially connecting a plurality of well pipes and water filter pipes, and assembling the underground water monitoring well device by annularly attaching water stop rings to the outer walls of the well pipes; placing an underground water monitoring well device in a monitoring well; and installing a wellhead protective cover to complete the rapid construction of the underground water monitoring well device.
Action and effect of the utility model
According to the utility model relates to a strainer, groundwater monitoring well device, because the utility model discloses a strainer sets up in the bottom of groundwater sampling well for carry out water quality monitoring to the groundwater on specific stratum, strainer have the filter layer of at least one deck parcel on the body, be used for filtering earth granule and suspended solid, and need not pack the filter layer between strainer and the wall of a well, not only practiced thrift material and transportation recruitment cost, but also realized removing the groundwater well after using very conveniently, do not influence the follow-up development work in place.
In addition, the groundwater monitoring well device adopts a plurality of well pipes and strainer connections of modularization preparation, not only convenient assembly and installation, but also well pipe and strainer can take back after the monitoring well is used up, but through handling the circulated use.
Furthermore, the water stop ring arranged between the well casing and the well wall of the sampling well is capable of plugging a gap between the well casing and the well wall of the sampling well after swelling when encountering water, and underground water below the water stop ring flows into the pipe body from the outside of the pipe body through the filter layer, so that a sealing layer is not required to be filled between the well casing and the well wall, and the beneficial effect of reducing underground water disturbance is achieved.
Therefore, the utility model discloses a well flow can not only effectively be simplified to groundwater monitoring well device, promotes and builds well efficiency, shortens and builds the well time, and well casing and strainer can conveniently remove moreover, through handling back circulated use.
Drawings
Fig. 1 is a schematic view of a groundwater monitoring well device according to an embodiment of the present invention;
fig. 2 is a schematic view of a body of a strainer according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a through-hole in an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a through-hole in an embodiment of the present invention;
FIG. 5 is a schematic view of a filter layer in an embodiment of the present invention; and
fig. 6 is a schematic diagram of an anti-blocking layer in an embodiment of the present invention.
Detailed Description
In order to make the utility model realize that technical means, creation characteristics, achievement purpose and efficiency are easily understood and known, following embodiment combines the attached drawing to be right the utility model discloses a strainer, groundwater monitoring well device do specifically expounds.
Example one
The underground water monitoring well device is arranged in the underground water sampling well, and underground water of a specific stratum which needs to be monitored is obtained after the underground water of the specific stratum is filtered.
As shown in fig. 1, the groundwater monitoring well device comprises a plurality of tubular well pipes 7, strainer pipes 11, water stop rings 10, a wellhead protection cover 6 and a sampling well cover 8 which are sequentially communicated from top to bottom.
The well pipes 7 are cylindrical, the outer diameter of each well pipe 7 is smaller than the inner diameter of the underground water sampling well, the two adjacent well pipes 7 are connected in a threaded connection or a buckling connection mode, in the embodiment, the well pipes 7 are made of PVC materials, and one section of the well pipes is about 3 meters and is connected in a threaded connection mode. When a threaded connection is used, the upper end of the well pipe 7 is provided with an internal thread, the outer diameter of the lower end connection is reduced and an external thread matching the internal thread is provided.
In addition, a connecting piece can be used for connecting two adjacent well pipes 7, external threads are respectively arranged at two ends of each well pipe 7, the connecting piece is annular, and internal threads matched with the external threads are arranged in the ring.
In the embodiment, well casing 7 and strainer 11 also pass through threaded connection equipment, put into the sample together underground to improve and build well efficiency, well head visor 6 sets up on 7 mouths of well casing of the top, and sample well lid 8 is cyclic annular setting subaerial, and well casing 7 passes from sample well lid 8, and sample well lid 8 is used for sheltering from the space between the wall of a well of well casing 7 and sample well.
The strainer 11 is arranged at the bottom of the underground water sampling well of a specific stratum at a preset depth and comprises a cylindrical pipe body 3, at least one filter layer 4 and an anti-blocking layer 5, wherein the length of the strainer 11 is set according to the hydrogeological structure and the water taking requirement, and is usually 100mm-20000 mm.
The tube body 3 is a cylindrical tube body and is provided with a tube wall, a plurality of through holes 2 are arranged on the tube wall, and the bottom of the tube body 3 can be sealed or not. In the embodiment, the bottom of the tubular body 3 is closed.
As shown in fig. 2, an internal thread 1 is provided at the upper end of the tube body 3, a plurality of through holes 2 are provided on the tube wall of the tube body 3, and the cross section of each through hole 2 may be any one of circular, oval and long-strip shapes.
The direction of the through-hole 2 is designed according to different pollutants in the ground water, and in one case, the center line of the through-hole 2 is perpendicular to the center line of the pipe body 3, so that the direction of water flow through the through-hole 2 is perpendicular to the center line of the pipe body 3.
Or the included angle between the central line of the through hole 2 and the downward direction of the central line of the tube body 3 is an acute angle.
When the water flow direction a passes through the through-hole 2 as shown in fig. 3, it is suitable for oil-containing ground water because oil-containing substances are easily floated and easily pass through the hole.
Or the included angle between the central line of the through hole 2 and the upward direction of the central line of the tube body 3 is an acute angle.
When the water flow direction B passes through the through-hole 2 as shown in fig. 4, it is suitable for heavy non-aqueous phase liquid contaminants to pass through such through-hole.
When the acute angle is 45 degrees, the water flow has a good effect.
Furthermore, the through hole 2 is arc-shaped at the edge of the pipe wall, that is, the joint of the through hole 2 and the pipe wall is arc-shaped, so that suspended matters in the groundwater are not easy to deposit at the joint.
In this embodiment, the pipe body 3 is cylindrical and made of PVC material, the sectional dimension of the pipe body 3 is the same as that of the well pipe 7, the center line of the through hole 2 is perpendicular to the center line of the pipe body 3, the cross section of the through hole 2 is in a long strip shape, the long strip seams can be horizontally cut on the pipe body 3 by an electric saw, and the long strip seams are parallel at intervals and are arranged in a staggered manner. The length of the long seam is 30mm-120mm, the width is 0.15-3mm, and the distance is 3mm-12 mm.
At least one filter layer 4 as shown in fig. 4 is wrapped on the pipe wall of the pipe body 3, and the size of the filter holes in the filter layer 4 is smaller than that of the through holes 2.
Wherein the filter layer 4 has a plurality of layers,
the multiple filter layers 4 have the same filter hole shape, and the filter hole positions in the two adjacent filter layers 4 are arranged in a staggered way;
alternatively, the multi-layer filter layer 4 is constituted by a plurality of filter layers 4 having different filter pore shapes, and the plurality of filter layers 4 having different filter pore shapes are arranged to intersect.
The filter layer 4 can have 5-20 layers according to the hydrogeology of the water taking layer and the water taking requirement. The filter layer 4 is made of stainless steel or organic polymer material with low adsorptivity.
In the embodiment, the filter layer 4 is wrapped by multiple layers of filter cloth with the same filter hole shape, or wrapped by multiple layers of filter cloth with different filter hole shapes, and the material of the filter cloth is selected from organic polymer materials with poor adsorptivity and good stability, such as any one of terylene, polypropylene fiber, nylon (nylon), vinylon, polyethylene fiber, mixed fiber and resin.
The shape of the filtering holes in the filtering cloth can be rectangle, rhombus and the like, the shape of the filtering holes of each layer of filtering cloth can be the same, and the filtering holes in the two adjacent layers of filtering layers 4 are arranged in a staggered way.
Alternatively, the shape of the filter pores of each filter cloth may be different, and a plurality of filter layers 4 having different filter pore shapes are arranged to intersect.
The filter layers 4 after the multilayer superposition can obtain smaller filter holes, and can more effectively play a role of filtration.
In the examples, the gaps of the filter cloth were divided into three specifications of coarse, medium and fine, and the mass per unit area was 100g/m2、450g/m2、800g/m2The equivalent pore diameters are 0.2mm, 0.14mm and 0.07mm respectively, and the filter cloth material is insoluble and does not contain organic pollutants at the normal temperature (15-17 ℃) of underground water, and is acid and alkali resistant.
Therefore, the size of the filtration pores in the filtration layer 4 is smaller than the size of the through-holes 2, i.e., the largest size of the equivalent pore diameters of the filtration layer 4 is smaller than the smallest size of the through-holes 2.
In order to avoid the clogging of the through holes 2, an anti-blocking layer 5 is arranged between the pipe body 3 and the filter layer 4.
The anti-blocking layer 5 with a net structure is arranged on the pipe wall in a surrounding way and is positioned between the pipe wall and the filter layer 4, and is used for supporting the filter layer 4 and preventing the through holes 2 from being blocked.
The anti-blocking layer 5 has the functions of supporting and isolating anti-blocking, and as shown in fig. 6, a plurality of through holes are arranged on the anti-blocking layer 5. In the embodiment, the filter layer 4 is separated from the outer wall of the tube body 3 by an anti-blocking layer 5 made of plastic net.
The water stop ring 10 is arranged at the lower end of the outer surface of the well pipe 7 at the upper part of the filter pipe 11 in a surrounding way and is positioned between the well pipe 7 and the wall of the sampling well.
As shown in fig. 1, the water stop ring 10 is arranged on the well pipe 7, the water stop ring 10 is made of a water-swellable rubber material, and the swelling coefficient of the rubber material is 1.5-3, so that no secondary pollution is caused; or the bentonite is made of a water permeable material, the bentonite is wrapped by the physically and chemically modified bentonite, the bentonite has good water swelling property when the pH value is 2-13, the swelling coefficient is 0.5-1.5, and the bentonite is light in weight, good in plasticity and free of secondary pollution.
In the embodiment, the water stop ring 10 is made of a water-swellable rubber material, and the water stop ring 10 is bonded to the well pipe 7.
The water stop ring 10 expanding when meeting water has the effect similar to that of a sealing layer in the traditional well building mode, and expands when meeting water, so that the water stop effect is achieved. The water stop ring 10 is expanded when meeting water and then seals a gap between the well pipe 7 and the wall of the sampling well, and the underground water below the water stop ring 10 flows into the pipe body 3 from the outside of the pipe body 3 through the filter layer 4.
The water stop ring 10 is simple and convenient to install, and the well building efficiency can be effectively improved. In addition, the water-swelling water stop ring 10 can be slowly contracted after being dehydrated, after the monitoring well is used up, the well pipe can be conveniently removed, the well pipe can be conveniently taken back, the well pipe can be recycled after being processed, and the cost is saved.
A construction method of a modular underground water monitoring well comprises the following steps:
selecting the position of an underground water monitoring well, selecting a proper drilling method according to the geological structure of a soil layer, and starting the drilling operation of the monitoring well, wherein the aperture of the monitoring well is larger than the sum of the outer diameter of a well pipe and the thicknesses of 2 water stop rings;
completing the drilling operation of the monitoring well when the drilling reaches a preset depth below the water-taking layer;
sequentially connecting a plurality of well pipes and water filter pipes, and assembling the underground water monitoring well device by annularly attaching water stop rings to the outer walls of the well pipes;
placing an underground water monitoring well device in a monitoring well;
and installing a wellhead protective cover to complete the rapid construction of the underground water monitoring well device.
Example two
The other structures of this embodiment are the same as those of the first embodiment, except that the structure of the body of the strainer is different from that of the first embodiment.
In this embodiment, the tube body is a cylindrical tube body, and has a tube wall, and a plurality of through holes are provided on the tube wall, and the bottom of the tube body may be closed or not. In an embodiment, the bottom of the tube body is closed.
Wherein, the pipe wall includes from last upper wall portion, well wall part and the lower wall part down, and a plurality of through-holes include the last through-hole that sets up on the upper wall portion respectively, set up the well through-hole on the wall part in and set up the lower through-hole on the lower wall part.
The included angle between the central line of the upper through hole and the downward direction of the central line of the pipe body is an acute angle.
The central line of the middle through hole is vertical to the central line of the pipe body.
The central line of the lower through hole and the upward included angle of the central line of the pipe body form an acute angle.
EXAMPLE III
The other structures of the embodiment are the same as those of the first embodiment, except that the structures of the filter pipes and the installation positions of the water stop rings are different from those of the first embodiment.
The strainer comprises a pipe body, at least one filtering layer and a water stop ring.
The cylindrical pipe body is provided with a pipe wall and comprises a pipe wall upper part and a pipe wall lower part, and the pipe wall lower part is provided with a plurality of through holes;
at least one filter layer is wrapped on the lower part of the pipe wall;
the water stop ring is arranged on the upper part of the pipe wall in a surrounding way and is positioned between the well pipe 7 and the wall of the sampling well.
Wherein the central line of the through hole is vertical to the central line of the pipe body,
or the included angle between the central line of the through hole and the downward direction of the central line of the pipe body is an acute angle,
or the included angle between the central line of the through hole and the upward direction of the central line of the pipe body is an acute angle.
Example four
Other structures of this embodiment are the same as the three phases of the embodiment, but the structure of the pipe body is different from the three phases of the embodiment.
In this embodiment, the lower portion of the tube wall includes an upper wall portion, a middle wall portion, and a lower wall portion from top to bottom.
The plurality of through holes include an upper through hole provided on the upper wall portion, a middle through hole provided on the middle wall portion, and a lower through hole provided on the lower wall portion, respectively.
The included angle between the central line of the upper through hole and the downward direction of the central line of the pipe body is an acute angle.
The central line of the middle through hole is vertical to the central line of the pipe body.
The central line of the lower through hole and the upward included angle of the central line of the pipe body form an acute angle.
Example 1
And aiming at the possible influence of a certain tailing pond on the underground water environment in the peripheral area, underground water environment investigation needs to be carried out. According to the characteristics of the tailings, the probable main pollutants of the underground water are inferred to be sulfate radicals, heavy metal ions and the like. According to the geological exploration result of the site, the stratum of the site sequentially comprises miscellaneous fill, gravel, strongly weathered granite and medium weathered granite from top to bottom. The ground water is mainly generated in the gravel layer, and the particle size of the gravel is 2-5 mm. The groundwater environment survey needs to establish a groundwater monitoring well for sampling detection, after determining that no underground facilities exist at a drilling point, according to the method, a 25m deep well is taken as an example, the drilling depth is 25m, a novel PVC water filter pipe 18m and a novel PVC well pipe 7.5m are assembled and placed in the well, and the pipe diameter is 100 mm. The filter cloth is selected to be 100g/m according to the particle size of pollutants and gravels possibly existing in the underground water 25 layers of wrapping. The length of the water leakage crack is 80mm, the width is 2mm, and the distance is 4 mm. And installing a wellhead protective cover and a circular ring to complete well construction.
Example 2
The groundwater environment investigation needs to be carried out aiming at the groundwater environment influence possibly existing in the peripheral area by a certain pesticide factory. According to the production process of the pesticide factory, the probable main pollutants of the underground water are inferred to be organophosphorus pesticide, organochlorine pesticide and the like. The ground water is mainly in the silt layer, and the particle size of the silt is 0.02 mm-0.05 mm. The groundwater environment survey needs to establish a groundwater monitoring well for sampling detection, after determining that no underground facilities exist at a drilling point, according to the method of the patent, taking a deep well with the depth of 25m as an example, drilling is carried out to the depth of 25m, a novel PVC water filter pipe with the depth of 18m and a novel PVC well pipe with the depth of 7.5m are assembled and put into the deep wellIn the well, the pipe diameter is 100 mm. According to the particle size of pollutants and silt possibly existing in underground water, the filter cloth is selected to be 800g/m2Wrap 10 layers. The length of the water leakage crack is 12mm, the width is 1mm, and the distance is 5 mm. And installing a wellhead protective cover and a circular ring to complete well construction.
The present embodiment has been described only for two examples of the construction of the monitoring well for sampling the inorganic pollution of groundwater and the organic pesticide pollution, but the present invention is not limited thereto, and those skilled in the art should understand that any changes and modifications may be made without departing from the scope of the claims of the present invention.
Effects and effects of the embodiments
According to strainer, groundwater monitoring well device that this embodiment relates, because the utility model discloses a strainer sets up in the bottom of groundwater sampling well for carry out water quality monitoring to the groundwater of specific stratum, the strainer has the filter layer of at least one deck parcel on the body, is used for filtering earth granule and suspended solid, and need not pack the filter layer between strainer and the wall of a well, has simplified the well construction flow, has practiced thrift material and transportation recruitment cost.
In addition, the groundwater monitoring well device adopts a plurality of well pipes and strainer connections of modularization preparation, not only convenient assembly and installation, but also well pipe and strainer can take back after the monitoring well is used up, but through handling the circulated use.
Furthermore, the water stop ring arranged between the well casing and the well wall of the sampling well is capable of plugging a gap between the well casing and the well wall of the sampling well after swelling when encountering water, and underground water below the water stop ring flows into the pipe body from the outside of the pipe body through the filter layer, so that a sealing layer is not required to be filled between the well casing and the well wall, and the beneficial effect of reducing underground water disturbance is achieved.
Furthermore, due to the structure of the underground water monitoring well device, the inner diameter of the underground water sampling well needing to be drilled is smaller, and the cost is saved.
Therefore, the groundwater monitoring well device of this embodiment can not only effectively promote and build well efficiency, avoids the filter bed filter material to block up the strainer, but well casing and strainer recycle after handling moreover.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
Claims (9)
1. The utility model provides a strainer, sets up in the bottom of groundwater sampling well for carry out water quality testing to the groundwater in specific stratum, its characterized in that includes:
the tube-shaped pipe body is provided with a pipe wall and comprises a pipe wall upper part and a pipe wall lower part, and the pipe wall lower part is provided with a plurality of through holes;
at least one filter layer wrapped on the lower part of the pipe wall; and
a water stop ring arranged on the upper part of the pipe wall in a surrounding way,
wherein the size of the filtering holes in the filtering layer is smaller than that of the through holes,
the water stop ring is made of a material capable of expanding when meeting water.
2. A strainer according to claim 1 wherein:
wherein the central line of the through hole is vertical to the central line of the pipe body,
or the included angle between the central line of the through hole and the downward direction of the central line of the pipe body is an acute angle,
or the included angle between the central line of the through hole and the upward direction of the central line of the pipe body is an acute angle.
3. A strainer according to claim 1 wherein:
wherein the lower part of the pipe wall comprises an upper wall part, a middle wall part and a lower wall part from top to bottom,
the plurality of through holes include upper through holes provided on the upper wall portion, middle through holes provided on the middle wall portion, and lower through holes provided on the lower wall portion, respectively,
the included angle between the central line of the upper through hole and the downward direction of the central line of the pipe body is an acute angle,
the central line of the middle through hole is vertical to the central line of the pipe body,
the central line of the lower through hole and the upward included angle of the central line of the pipe body form an acute angle.
4. A strainer according to claim 1 wherein:
also comprises an anti-blocking layer with a net structure, which is arranged around the lower part of the pipe wall and between the pipe wall and the filter layer and is used for supporting the filter layer and preventing the through holes from being blocked,
wherein the filter layer has a plurality of layers,
the filtering layers have the same filtering hole shape, the filtering hole positions in the two adjacent filtering layers are staggered,
or the plurality of filter layers are formed by a plurality of filter layers with different filter hole shapes, the plurality of filter layers with different filter hole shapes are arranged in a crossing way,
the filtering layer is made of stainless steel or organic polymer material with low adsorbability.
5. The utility model provides an underground water monitoring well device for set up in groundwater sampling well, filter the back to the groundwater in specific stratum, obtain and need be used for detecting the groundwater in specific stratum, its characterized in that includes:
a plurality of tubular well pipes and strainer pipes which are communicated in sequence from top to bottom,
wherein the strainer is disposed at a bottom of the groundwater sampling well, the bottom of the groundwater sampling well being located in the specific stratum,
the filter tube is the filter tube in any one of claims 1 to 4.
6. The utility model provides an underground water monitoring well device for set up in groundwater sampling well, filter the back to the groundwater in specific stratum, obtain and need be used for detecting the groundwater in specific stratum, its characterized in that includes:
a plurality of cylindrical well pipes, water filter pipes, an anti-blocking layer and a water stop ring which are sequentially communicated from top to bottom,
wherein the strainer is disposed at a bottom of the groundwater sampling well, the bottom being located in the specific formation, the strainer having:
a cylindrical pipe body having a pipe wall provided with a plurality of through holes,
at least one filter layer wrapped on the pipe wall,
the size of the filtering holes in the filtering layer is smaller than that of the through holes,
an anti-blocking layer with a net structure, which is arranged on the pipe wall in a surrounding way and is positioned between the pipe wall and the filter layer and is used for supporting the filter layer and preventing the through holes from being blocked,
the water stop ring is arranged at the lower end of the outer surface of the well pipe at the upper part of the strainer in a surrounding way,
the water stop ring is made of a material capable of expanding when meeting water.
7. A groundwater monitoring well device according to claim 6, wherein:
wherein the central line of the through hole is vertical to the central line of the pipe body,
or the included angle between the central line of the through hole and the downward direction of the central line of the pipe body is an acute angle,
or the included angle between the central line of the through hole and the upward direction of the central line of the pipe body is an acute angle.
8. A groundwater monitoring well device according to claim 6, wherein:
wherein the pipe wall comprises an upper wall part, a middle wall part and a lower wall part from top to bottom,
the plurality of through holes include upper through holes provided on the upper wall portion, middle through holes provided on the middle wall portion, and lower through holes provided on the lower wall portion, respectively,
the included angle between the central line of the upper through hole and the downward direction of the central line of the pipe body is an acute angle,
the central line of the middle through hole is vertical to the central line of the pipe body,
the central line of the lower through hole and the upward included angle of the central line of the pipe body form an acute angle.
9. A groundwater monitoring well device according to claim 6, wherein:
wherein the filter layer has a plurality of layers,
the filtering layers have the same filtering hole shape, the filtering hole positions in the two adjacent filtering layers are staggered,
or the plurality of filter layers are formed by a plurality of filter layers with different filter hole shapes, the plurality of filter layers with different filter hole shapes are arranged in a crossing way,
the filtering layer is made of stainless steel or organic polymer material with low adsorbability.
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| CN201920618412.XU CN210562400U (en) | 2019-04-30 | 2019-04-30 | Water filter pipe and underground water monitoring well device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144993A (en) * | 2019-04-30 | 2019-08-20 | 同济大学 | A kind of filter pipe, groundwater monitoring well device and construction method |
| CN112900545A (en) * | 2021-01-19 | 2021-06-04 | 湖北省地质局武汉水文地质工程地质大队 | Medium-deep geothermal heat-preservation water taking method |
| CN115126409A (en) * | 2022-08-30 | 2022-09-30 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Monitoring well construction process and direct-pushing well forming tool thereof |
-
2019
- 2019-04-30 CN CN201920618412.XU patent/CN210562400U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144993A (en) * | 2019-04-30 | 2019-08-20 | 同济大学 | A kind of filter pipe, groundwater monitoring well device and construction method |
| CN112900545A (en) * | 2021-01-19 | 2021-06-04 | 湖北省地质局武汉水文地质工程地质大队 | Medium-deep geothermal heat-preservation water taking method |
| CN112900545B (en) * | 2021-01-19 | 2022-07-01 | 湖北省地质局武汉水文地质工程地质大队 | Medium-deep geothermal heat-preservation water taking method |
| CN115126409A (en) * | 2022-08-30 | 2022-09-30 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Monitoring well construction process and direct-pushing well forming tool thereof |
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