CN114527251B - Automatic multi-parameter groundwater environment layering monitoring well suitable for polluted site - Google Patents

Abstract

The utility model relates to an automatic multi-parameter groundwater environment layering monitoring well suitable for contaminated site, it is including detecting the well casing and setting up in the intraductal separation well casing of detection well and set up the sampling device in the detection well casing, the sampling punch combination has been seted up to the pipe wall that detects the well casing, the sampling punch combination includes the thief hole of a plurality of vertical distributions, be provided with the sampling subassembly between detection well casing and the separation well casing, the sampling subassembly includes a plurality of thief hole distribution direction distributions and the mutual sample box body of concatenation along the thief hole group, the sampling box body is the side opening setting, the side opening border fixed connection of sampling box body is in the inner wall of detecting the well casing and communicates in the thief hole, the bottom of sampling box body is equipped with the first sampling tube of with the water discharge, first sampling tube communicates in separating the well casing, it is provided with the sampling device who is used for communicateing different first sampling tubes and is used for driving the drive assembly of the vertical slip of sampling device to separate the intraductal vertical slip of well. The underground water monitoring system can monitor underground water at different depths in real time.

Description

Automatic multi-parameter groundwater environment layering monitoring well suitable for polluted site

Technical Field

The application relates to the field of underground water detection technology, in particular to an automatic multi-parameter underground water environment layered monitoring well suitable for a polluted site.

Background

With the development of science and technology and industry, human activities, especially industrial production and manufacturing processes, can generate relatively more pollutants, generate certain pollution to the activity place and the periphery of the activity place, and generate certain pollution to underground water.

In order to reduce the pollution of human activities to underground water, underground water monitoring is often performed on an activity site in the prior art, and meanwhile, soil remediation and other work can be performed on a part of polluted sites so as to reduce the influence on the underground environment. In industrial production, the pollution source can infiltrate down to shallow groundwater and diffuse transversely and longitudinally to a larger area, so that the diffusion of the pollution source forms a frustum-shaped pollution zone from the local part of the ground surface to the underground part, and the pollution source can cause groundwater water quality pollution to different degrees at different depths of the ground and at different distances from the ground surface.

In the existing underground water monitoring, in order to facilitate the underground water monitoring, a monitoring well is usually arranged near a pollution source, an underground water layered sampling technology based on a U-shaped pipe principle is adopted to realize the automatic layered sampling of the underground water, and then the detection of items such as pH value, total hardness, total dissolved solids, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, volatile phenol, total cyanide, permanganate index, fluoride and the like is carried out on underground water samples of different depths through a water detector, so that the quality of the underground water is monitored, and the pollution condition of the underground water is checked in real time.

However, when the leakage amount of the pollution source is large, part of DNAs PLs in the pollution source can penetrate through the whole unsaturated zone to reach a saturated zone, the DNAs PLs reaching the saturated zone can be slowly dissolved in underground water and flow with the underground water to form pollution plumes, the situation that part of pollutants and underground water sampling points are vertically staggered exists, and certain errors exist in monitoring of the underground water.

Disclosure of Invention

In order to monitor the groundwater of different groundwater layers, the application provides an automatic multi-parameter groundwater environment layering monitoring well suitable for contaminated site.

The application provides a pair of automatic multi-parameter groundwater environment layering monitoring well suitable for contaminated site adopts following technical scheme:

the utility model provides an automatic multi-parameter groundwater environment layering monitoring well suitable for contaminated site, includes whole insert locate the underground detection well casing, still including setting up in the interior partition well casing of detection well casing and at least one set up in the intraductal sampling device of detection well, at least a set of sample punch combination has been seted up to the pipe wall of detection well casing, the sample punch combination includes the thief hole of a plurality of vertical distributions, be provided with at least a set of sampling subassembly between detection well casing and the partition well casing, sampling subassembly includes a plurality of thief hole distribution direction distribution along the thief hole group and the sample box body of mutual concatenation, the sample box body is the side opening setting, the side opening border fixed connection of sample box body is in the inner wall of detection well casing and communicates in the thief hole, the bottom of sample box body is equipped with the first thief pipe of discharging with water, first thief pipe communicates in separating the well casing, it is provided with the sampling device who is used for communicateing different thief pipes and is used for driving the drive assembly of the vertical gliding of thief device to separate the intraductal vertical slip of well casing.

By adopting the technical scheme, when the groundwater is required to be sampled at different depths, the driving assembly is only required to drive the sampling device to vertically slide to the corresponding position, and then the groundwater which is infiltrated through the sampling hole in the sampling box body is taken out through the first sampling tube; meanwhile, the plurality of vertically distributed sampling holes can guide the groundwater at different depths into the sampling box body for temporary storage, and the plurality of vertically spliced sampling box bodies can store the groundwater at different depths, so that the groundwater at different depths can be detected in real time according to the monitoring requirement through the vertically sliding sampling device; the sampling box body is arranged in the detection well pipe, so that the interference on the installation of the detection well pipe can be effectively reduced, the separation can be performed through the separation well pipe, and the interference on the vertical sliding of the sampling device is reduced.

Optionally, the outside of thief hole is provided with and is used for filterable filter screen.

Through adopting above-mentioned technical scheme, impurity that groundwater contains in can effectual reduction sampling box.

Optionally, sampling device is including the sample connection that is used for the first sampling tube of intercommunication and the sampling mechanism who is used for taking water out to separate the well casing, the inside cavity of sample connection just is side open structure, sample connection side opening border laminating and vertical slip set up in the inner wall of separating the well casing, the bottom of sample connection is provided with the second sampling tube that communicates the sampling mechanism entry.

Through adopting above-mentioned technical scheme, sampling mechanism slides through the sample seat and connects in separating the well casing to let in water to doing in the sample seat through first sampling tube, simultaneously because the well casing setting is separated in the sample seat laminating, groundwater that can also effectual reduction leaked, and let in groundwater to sampling mechanism through the second sampling tube, then take out and separate the well casing and do the monitoring.

Optionally, drive assembly includes that two rotations set up in the driving band of separating the drive roller of well casing inner wall and two drive rollers are located to the overcoat, sample seat and/or sampling mechanism fixed connection are in the driving band, it still is provided with and is used for driving drive roller pivoted driving motor to separate the well casing.

Through adopting above-mentioned technical scheme, when the vertical degree of depth that slides to needs monitoring of needs sampling device, only need drive the drive roller through driving motor and rotate to drive the driving band ring and rotate, with the vertical slip of driving sample seat or sampling mechanism through ring pivoted driving band.

Optionally, the inner wall one-to-one sampling device of separating the well casing is provided with a plurality of sealed tracks, sealed track is open-ended box body column structure and opening border fixed connection in separating the well casing inner wall, the sample seat is located sealed track and sealed track sets up the rectangular shape hole that slides of vertical extension, the second sampling tube is worn out sealed track through the rectangular shape hole that slides, be provided with the first sealing member that is used for sealed rectangular shape hole that slides in the sealed track.

By adopting the technical scheme, the sealing track can guide and limit the belt surface of the driving belt away from one side of the center of the separation well pipe, optimize the stability in vertical sliding, and simultaneously can preliminarily seal the sliding elongated hole by attaching the belt surface of the driving belt to the inner wall of the sealing track when in use; in addition, the first sealing element is used for further sealing so as to reduce the groundwater flowing into the separated well pipe and reduce the possibility of corrosion to a sampling mechanism and a driving belt of other parts caused by the immersion of the groundwater; in addition, can also reduce the interference to the vertical slip of second sampling tube through the rectangular hole that slides.

Optionally, the belt surface of one side of the driving belt, which is far away from the center of the separation well casing, vertically penetrates through the sealing track, the inner wall of the sealing track is fixedly connected with a pressing strip for pressing the belt surface of the driving belt on the inner wall of the sealing track, the edge of the driving belt, which is located in the sealing track, is clamped between the pressing strip and the inner wall of the sealing track, two first sealing elements are arranged on the two side edges of the first sealing element, which correspond to the driving belt, and each first sealing element comprises two first sealing strips for clamping the belt surface of the driving belt, and the two first sealing strips are fixedly connected to the pressing strip and the inner wall of the sealing track respectively.

By adopting the technical scheme, the belt surface of the driving belt can be pressed on the inner wall of the sealing track through the pressing strip, and the sliding strip-shaped hole and the inner space of the sealing track are separated; a further seal is then made between the belt face of the drive belt and the inner wall of the sealing track by means of the first sealing strip.

Optionally, the opening border of sample seat is provided with the second sealing member that is used for sliding seal, the second sealing member is the annular and its inlays the opening border of locating the sample seat, the second sealing member is hollow structure and its inside packing has sealed fat, the second sealing member laminating is in one side of separating the well casing inner wall and has been seted up a plurality of sealing ports that are used for sealed fat exhaust.

Through adopting above-mentioned technical scheme, can be at the in-process that slides, receive the extrusion because of the second sealing member for partly sealed fat is extruded and is filled the second sealing member and the clearance of separating between the inner wall of well casing, with fully sealed, thereby reduce the groundwater that flows in because of other thief holes to the influence of monitoring result.

Optionally, the driving band includes drive strip and cladding in the elastic layer of drive strip outer wall, two drive rollers are located to the drive strip cover, just the drive strip is provided with and is used for can dismantling the connecting piece of connection with drive strip both ends, the week side of connecting piece is provided with the elastic connection layer with elastic layer outer wall parallel and level.

Through adopting above-mentioned technical scheme, because the driving band need soak at groundwater, groundwater is for the below of contaminated ground or industrial land, groundwater's quality of water is relatively poor, can cause the corruption to the driving band, and the driving band sets up in the separation well casing and the sealed track of vertical setting, be not convenient for directly change the driving band, only need pass through the connecting piece this moment, make the disconnection of driving strip head and the tail, then pass through the connecting piece with new driving strip and old driving strip and be connected, then pulling or rotate the drive roller, make new driving strip overlap in proper order and locate two drive rollers, at last the rethread connecting piece can dismantle after the connection with the head and the tail of new driving strip, the rethread elastic connection layer is sealed, can effectually reduce under the prerequisite to the sealed effect of driving band, can also be convenient for change the driving band.

Optionally, the connecting piece includes that two connecting plates and a plurality of rotations that adopt flexible material to make set up in the connection tooth of two connecting plates, connect in same a plurality of connection teeth of connecting plate divide into two sets of and two sets of connection teeth and distribute along the length direction of drive strip, and are two sets of the axis of rotation of connecting the tooth is located the one end that two sets of connection teeth kept away from mutually, connect the tooth butt in the connecting plate, and two the connecting bolt fixed connection that the drive strip was worn to locate respectively through a plurality of connecting plate.

Through adopting above-mentioned technical scheme, when flexible connecting plate can adapt to the hoop rotation of driving band, can also be when connecting, through the butt of a plurality of connection teeth, the breaking away from of the relative connecting plate of restriction driving strip to relatively directly pass through connecting bolt and connect, can effectual increase and the tie point of connecting plate, reduce because of the local concentration of atress, lead to the possibility that connecting plate or driving strip damaged.

Optionally, sampling mechanism includes fixed connection in the sampling bucket of sample seat and the compression piece that is used for compression or extraction sampling bucket interior air, the second sampling tube communicates in sampling bucket and second sampling tube and is provided with the first check valve towards the sampling bucket circulation, the bottom of sampling bucket still communicates has the fourth sampling tube that upwards stretches out the partition well casing, and the fourth sampling tube is provided with the second check valve towards outside circulation.

By adopting the technical scheme, during sampling, only the air in the sampling barrel needs to be compressed by the compression piece, so that the residual water in the sampling barrel is discharged through the fourth sampling tube, then the compression piece extracts the air, so that negative pressure is formed in the sampling barrel, and the underground water is pumped into the sampling barrel through the second sampling tube; and finally, compressing the air in the sampling barrel through a compression piece, discharging the underground water sample through a fourth sampling tube and monitoring.

In summary, the present application includes at least one of the following beneficial technical effects:

when the groundwater needs to be sampled at different depths, the driving assembly is only used for driving the sampling device to vertically slide to a corresponding position, and then the groundwater infiltrated through the sampling hole in the sampling box body is taken out through the first sampling tube; meanwhile, the plurality of vertically distributed sampling holes can guide the groundwater at different depths into the sampling box body for temporary storage, and the plurality of vertically spliced sampling box bodies can store the groundwater at different depths, so that the groundwater at different depths can be detected in real time according to the monitoring requirement through the vertically sliding sampling device; the sampling box body is arranged in the detection well pipe, so that the interference on the installation of the detection well pipe can be effectively reduced, the separation can be performed through the separation well pipe, and the interference on the vertical sliding of the sampling device is reduced.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a schematic cross-sectional structural view of the second seal member in the embodiment of the present application.

Fig. 4 is a schematic sectional view of the line B-B in fig. 1.

Fig. 5 is an enlarged schematic view of a portion C of fig. 4.

Fig. 6 is an enlarged schematic view of a portion D in fig. 1.

Description of reference numerals: 1. detecting a well pipe; 11. a sampling hole group; 111. a sampling hole; 112. a first sampling tube; 113. filtering with a screen; 2. isolating the well tubular; 21. a sampling assembly; 211. a sampling box body; 22. sealing the rail; 221. sliding the elongated holes; 222. pressing the strips; 23. a first seal member; 231. a first seal strip; 3. a drive assembly; 31. a drive roller; 32. a drive belt; 321. a drive bar; 322. an elastic layer; 323. an elastic tie layer; 33. a drive motor; 34. a connecting member; 341. a connecting plate; 342. a connecting tooth; 343. a connecting bolt; 4. a sampling seat; 41. a second sampling tube; 411. a first check valve; 42. a second seal member; 421. sealing the opening; 43. a connecting rod; 5. a sampling mechanism; 51. a sampling barrel; 52. a third sampling tube; 521. a fourth sampling tube; 522. a second check valve; 53. a compression member; 531. compressing the air pump; 532. compressing the tube; 54. a control member; 541. controlling the corrugated pipe; 542. controlling the pressure plate; 543. a control loop; 544. a restraining bar.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses an automatic multi-parameter groundwater environment layering monitoring well suitable for a polluted site. Referring to fig. 1 and 2, the monitoring well includes a test well pipe 1 integrally inserted into the ground, a separation well pipe 2 coaxially disposed in the test well pipe 1, and at least one sampling device for sampling groundwater. In this embodiment three sampling devices are provided, and three sampling devices are arranged around the centre axis of the test well pipe 1.

Meanwhile, in order to be able to sequentially guide groundwater of different depths into the detection well pipe 1 respectively, the inner wall of the detection well pipe 1 is provided with three groups of sampling hole groups 11 corresponding to the three sampling devices, and the three groups of sampling hole groups 11 are arranged around the central axis of the detection well pipe 1. The sampling hole group 11 comprises a plurality of sampling holes 111 distributed in a vertical array, and three sampling assemblies 21 are arranged in three groups of sampling hole groups 11 corresponding to one between the detection well pipe 1 and the separation well pipe 2. Wherein, the outer side of the sampling hole 111 is provided with a filter screen 113 for filtering, so as to filter the groundwater and reduce the impurities flowing into the sampling assembly 21.

Referring to fig. 1 and 2, the sampling assembly 21 includes a plurality of sampling box bodies 211 arranged in a vertical distribution, the sampling box bodies 211 are of a side-open structure, and side-open edges of the sampling box bodies 211 are attached to and fixedly connected to an inner wall of the well pipe 1. The side opening border of sample box body 211 communicates in at least one sampling hole 111, and the sampling hole 111 of sample box body 211 intercommunication is located the upper portion of sample box body 211, the lower part of sample box body 211 is provided with the first sampling tube 112 of discharging inside water, the one end that first sampling tube 112 kept away from sample box body 211 is fixed and communicates in separating the well casing 2, in order to be used for discharging the water in the sample box body 211 to separating the well casing 2, and to separating the well casing 2 and being connected between the well casing 1, increase and separate the stability of being connected between well casing 2 and the detection well casing 1.

The vertical slip of inner wall of separating well casing 2 is provided with the sampling device who is used for different first sampling tubes 112 of intercommunication when sliding to can not pass through first sampling tube 112 through the slip intercommunication, and take the groundwater of reserving in the different sample box bodies 211 out the opening that detects well casing 1, do the groundwater sample of the different degree of depth.

When the device is used, the three sampling devices can be used for sampling underground water at different depths according to requirements at the same time, obtaining parameters of different underground water, effectively increasing the quantity of the obtained parameters of the underground water and increasing the accuracy of underground water detection; in addition, by setting the three sampling devices at the same level, the groundwater parameters around the detection well pipe 1 can be obtained by the difference of the groundwater data extracted by the three sampling devices, and the infiltration direction of groundwater around the detection well pipe 1 can be estimated.

Referring to fig. 1 and 2, separate 2 opening borders of well casing and still be provided with three the vertical gliding drive assembly 3 of the three sampling device of difference one-to-one drive to can be when the sample, drive roller drive assembly 3 drives the degree of depth of sampling device to needs monitoring, then through the sampling device sample can, do not need the inside that manual control immersible pump etc. stretched into to the monitoring well, take groundwater out.

The sampling device comprises a sampling seat 4, the sampling seat 4 is vertically connected to the separation well pipe 2 in a sliding manner, the sliding paths of the three sampling seats 4 correspond to the distribution directions of a plurality of sampling holes 111 of the three sampling hole groups 11 one by one respectively, and therefore when the sampling seat 4 slides vertically, the sampling holes 111 with different depths can be respectively in one-to-one correspondence.

Referring to fig. 1 and 2, specifically, the interior of the sampling seat 4 is of a hollow structure and is provided with a side opening, and the side opening edge of the sampling seat 4 is attached to and slidably connected to the inner wall of the separation well pipe 2. Wherein, the sampling device still includes and is used for taking out the sampling mechanism 5 of separating well casing 2 with the interior water of sample seat 4, and further, the bottom of sample seat 4 is fixed and is communicated with second sampling tube 41, and the one end that second sampling tube 41 kept away from sample seat 4 is fixed and is communicated in sampling mechanism 5.

Furthermore, the opening edge of the sampling seat 4 is provided with a second sealing member 42 for sealing between the sampling seat 4 and the inner wall of the separation well pipe 2, so that the possibility that groundwater above and below the sampling layer flows and permeates into the sampling seat 4 to interfere with the monitoring result is reduced.

Referring to fig. 2 and 3, the second sealing member 42 is fitted into the opening of the sampling seat 4 and is annularly arranged, and the second sealing member 42 is hollow and is internally filled with a sealing grease insoluble in water, specifically made of a non-pollutant material, such as a special sealing grease made of a highly chemically stable perfluoropolyether oil PFPE as a base oil. The second sealing element 42 is attached to the outer wall of the inner wall of the separation well pipe 2 and provided with a plurality of sealing ports 421, so that when the second sealing element 42 slides, part of sealing grease can be extruded out by the extruded second sealing element 42 and is sealed; meanwhile, the water-insoluble sealing grease can be effectively attached to the inner wall of the separation well pipe 2, and the interference to underground water is reduced. Of course, in other embodiments, the second sealing element 42 may also be an annular elastic sealing strip to seal.

Referring to fig. 1 and 2, the driving assembly 3 comprises two driving rollers 31 rotatably connected to the inner wall of the separation well pipe 2 and a driving belt 32 sleeved on the two driving rollers 31, wherein the two driving rollers 31 are horizontally arranged. Two driving rollers 31 of the same driving assembly 3 are vertically distributed and are respectively located at the top and the bottom of the separation well pipe 2, so that the vertical sliding amplitude of the sampling mechanism 5 in the separation well pipe 2 is increased, and meanwhile, the sampling mechanism 5 can slide to the pipe orifice of the separation well pipe 2 for later maintenance. Wherein, the opening edge of the separation well pipe 2 is further provided with three driving motors 33 for respectively driving the driving rollers 31 of the three driving assemblies 3 to rotate.

Specifically, the driving motor 33 can be connected to the driving roller 31 and the output shaft of the driving motor 33 through a bevel gear assembly, and the two bevel gears are engaged with each other; or directly so that the output shaft of the drive motor 33 is coaxially fixedly connected to the drive roller 31. Of course, in other embodiments, the driving assembly 3 may also be a nut-screw assembly, the screw is rotatably disposed on the inner wall of the separation well pipe 2, and the nut is fixedly connected to the sampling seat 4; or the sampling device is driven by a chain wheel and chain component, two chain wheels are arranged and are arranged on the inner wall of the separation well pipe 2 in a rotating mode, the two chain wheels are sleeved with the chains in an outer mode, and the sampling seat 4 is fixedly connected to the chains.

Referring to fig. 1 and 2, while the divided well pipe 2 is used to monitor the contamination of groundwater in industrial sites, the groundwater quality is relatively poor and corrosive to the drive belt 32; in order to reduce corrosion of the entire drive belt 32, the inner wall of the divided casing 2 is provided with three sealing tracks 22, and the three sealing tracks 22 are provided corresponding to the three drive belts 32 one by one.

The sealing track 22 is of a box-shaped structure and is of a side-opening structure, and the side-opening edge of the sealing track 22 is attached and fixedly connected to the inner wall of the separation well pipe 2. The sample holder 4 is located inside the sealing track 22, the driving belt 32 is away from the belt surface of the divided well pipe 2 and vertically penetrates through the sealing track 22, and the belt surface of the driving belt 32 located inside the sealing track 22 is attached to the inner wall of the sealing track 22 facing the center side of the divided well pipe 2. The sampling seat 4 is fixedly connected with a guide strip, and the guide strip is vertically connected to the sealing track 22 in a sliding manner through a sliding chute vertically arranged on the inner wall of the sealing track 22; or the sliding groove is arranged on the sampling seat 4, and the guide strip is fixedly connected with the inner wall of the sealing track 22.

Referring to fig. 1 and 2, specifically, the outer wall of the sealing track 22 corresponding to the belt surface of the driving belt 32 is provided with at least two sliding elongated holes 221 extending vertically, and the second sampling pipe 41 penetrates through the sealing track 22 through one of the sliding elongated holes 221 and is connected to the sampling mechanism 5. Meanwhile, the sampling seat 4 is also fixedly connected with a plurality of connecting rods 43, and the connecting rods 43 penetrate through the sealing rail 22 through other sliding elongated holes 221 and are fixedly connected to the sampling mechanism 5 so as to support the sampling mechanism 5; simultaneously, can also make second sampling tube 41 can normally vertically slide through the rectangular hole 221 that slides to through the driving band 32 area face of the sealed track 22 inner wall setting of laminating, do preliminary sealed to the rectangular hole 221 that slides.

Referring to fig. 4 and 5, the first seal member 23 for further sealing the peripheral side of the sliding elongated hole 221 is provided inside the seal rail 22. The first sealing members 23 are provided in two corresponding to both side edges of the driving belt 32 inside the sealing track 22. Two pressing strips 222 are fixedly connected to the inner wall of the sealing track 22, and the side edge of the belt surface of the driving belt 32 located in the sealing track 22 is clamped between the pressing strips 222 and the inner wall of the sealing track 22 where the sliding elongated hole 221 is located, so as to respectively press the two side edges of the driving belt 32 located in the sealing track 22 to the inner wall of the sealing track 22.

Referring to fig. 4 and 5, the first sealing member 23 includes two first sealing strips 231, the two first sealing strips 231 are clamped between the pressing strip 222 and the inner wall of the sealing rail 22 where the sliding elongated hole 221 is located, and the driving belt 32 is located between the two first sealing strips 231, the two first sealing strips 231 are fixedly connected to the pressing strip 222 and the inner wall of the sealing rail 22 respectively. Wherein the lower ends of the two first sealing strips 231 at the side of the two first sealing elements 23 away from the center of the divided casing 2 are connected with each other, and the lower ends of the two pressing strips 222 are connected with each other for sealing the position where the lower part of the driving belt 32 passes through the sealing track 22.

Referring to fig. 6, in addition, since the driving belt 32 is inserted into the sealing track 22 and is pressed on the inner wall of the sealing track 22 by the pressing strip 222, and the belt surface of a part of the driving belt 32 is soaked in the underground water with partial contamination, after long-term use, the driving belt 32 is prone to corrosion, resulting in a situation of breakage. In order to facilitate the replacement of the driving belt 32, the driving belt 32 includes a driving strip 321 and an elastic layer 322 covering the outer wall of the driving strip 321, the driving strip 321 is a cable woven into a belt shape or made of a plurality of cables, in this embodiment, the driving strip 321 is a woven belt, and is used for bearing the tensile force during rotation, and the elastic layer 322 is used for protecting the driving strip 321 and increasing the friction force between the driving strip 321 and the driving roller 31, so as to reduce the possibility of occurrence of slippage.

The driving strips 321 are detachably connected with each other end to end through the connecting pieces 34, and the corresponding outer wall of the connecting pieces 34 is laid with an elastic connecting layer 323 with the outer wall being flush with the elastic layer 322, so that the influence on the sealing of the driving belt 32 caused by the arrangement of the connecting pieces 34 is reduced. The elastic connecting layer 323 is made of an elastic hot-melt material, such as hot-melt rubber.

Referring to fig. 6, further, the connection member 34 includes two connection plates 341 made of a flexible material and a plurality of connection teeth 342 rotatably disposed on the two connection plates 341, the plurality of connection teeth 342 connected to the same connection plate 341 are divided into two groups, and the two groups of connection teeth 342 connected to the same connection plate 341 are distributed along the length direction of the driving bar 321. Specifically, the rotation axes of the two sets of connection teeth 342 connected to the same connection plate 341 are located at the ends of the two sets of connection teeth 342 far away from each other, so that when the driving bar 321 is under tension, the driving bar 321 will drive the connection teeth 342 to rotate towards the driving bar 321 and further abut against the driving bar 321, and the two ends of the driving bar 321 are limited to be away from each other and slide. Wherein, the two sides of the connecting tooth 342 along the width direction of the driving bar 321 are respectively provided with a connecting bolt 343 through which the two connecting plates 341 and the driving bar 321 are arranged.

When the connecting structure is used, the connecting bolt 343 is used for limiting the two ends of the two connecting plates 341, which are located at the connecting teeth 342 and are far away from each other along the length direction of the driving bar 321, so that when the connecting teeth 342 rotate, the deformation degree of the connecting plates 341 can be reduced, the connecting teeth 342 can be stably abutted against the driving bar 321, and the stability of the head-to-tail connection of the driving bar 321 is further improved; meanwhile, when the driving belt 32 needs to be replaced, only the elastic connecting layer 323 needs to be cut, then the connecting bolt 343 is removed, the driving strip 321 of the replaced driving belt 32 is connected to the old driving strip 321, the driving roller 31 is driven to rotate by the driving motor 33, so that the two driving rollers 31 can be sequentially sleeved with the replaced driving strip 321, the head and the tail ends of the driving strip 321 sleeved with the two driving rollers 31 are connected by the connecting piece 34, and finally, the elastic connecting layer 323 is formed by laying hot-melt elastic materials on the outer walls of the two connecting plates 341.

Further, in order to further replace the driving belt 32, the outer walls of the two connection plates 341 are coated with paraffin so that the elastic connection layer 323 can be cut or thermally fused to be separated from the connection plates 341.

Referring to fig. 1 and 2, sampling mechanism 5 includes that fixed connection keeps away from the sampling bucket 51 of sample seat 4 one end and is used for compressing the compression piece 53 of air in the sampling bucket 51 in connecting rod 43, still coaxially is provided with third sampling tube 52 in the sampling bucket 51, and sampling bucket 51 is vertical setting, and third sampling tube 52 is coaxial to be set up in the inside of sampling bucket 51, and third sampling tube 52 is upper and lower extreme open structure.

Further, the second sampling tube 41 is connected to the inside of the third sampling tube 52, and the second sampling tube 41 is provided with a first check valve 411 facing the third sampling tube 52, so as to reduce the possibility that the water in the third sampling tube 52 flows toward the sampling box body 211. Meanwhile, the bottom of the third sampling pipe 52 is communicated with a fourth sampling pipe 521 which extends upward from the partition well pipe 2, and the fourth sampling pipe 521 is provided with a second check valve 522 which flows to the outside. The third sampling pipe 52 is internally provided with a compression piece 53 for compressing or extracting air inside the sampling barrel 51, so that when the sampling device is used, water can be discharged through the fourth sampling pipe 521 by compressing the air, so that the water in the third sampling pipe 52 is drained, and the influence on a monitoring result is reduced; meanwhile, the negative pressure is formed in the sampling barrel 51 by extracting air, water in the sampling box body 211 is pumped into the third sampling tube 52 through the second sampling tube 41, and therefore when residual water in the third sampling tube 52 is drained, the underground water sample in the sampling box body 211 can be normally extracted.

Of course, in other embodiments, the sampling mechanism 5 may also be configured as a submersible pump to directly extract the groundwater sample in the sampling box 211.

Referring to fig. 1 and 2, in detail, the compressing member 53 includes a compression air pump 531 and a compression pipe 532, the compression air pump 531 is installed on the top of the detection well pipe 1, one end of the compression pipe 532 is connected to the air input/output end of the compression air pump 531, and the other end of the compression pipe 532 is connected to the sampling barrel 51. In other embodiments, the compressing member 53 may also be provided as an electric pushing cylinder and a sliding plate fixedly connected to the telescopic end of the electric pushing cylinder, the sliding plate being adapted to the inner wall of the sampling bucket 51 to form a negative pressure or a high pressure inside the sampling bucket 51 by the sliding of the sliding plate, thereby achieving the pumping and discharging of groundwater.

Further, since the compression air pump 531 is provided, in order to allow groundwater to enter the compression air pump 531 through the compression pipe 532, the compression air pump 531 is affected, and the control member 54 is provided at the edge of the upper opening of the third sampling pipe 52.

Referring to fig. 1 and 2, the control member 54 includes a control bellows 541 and a control pressure plate 542, and one end of the control bellows 541 is fixed to and communicated with an upper opening edge of the third sampling tube 52; the other end of the control bellows 541 is fixedly connected to the control pressing plate 542, so that when the air in the sampling barrel 51 is compressed or forms a negative pressure, the air pressure can be balanced by controlling the expansion and contraction of the bellows 541, and the air in the third sampling tube 52 is compressed or extracted, thereby realizing the extraction and discharge of the groundwater.

Further, a plurality of vertically distributed control rings 543 are fixedly connected to the protruding edge of the control bellows 541, the control rings 543 vertically penetrate through and are slidably connected to a plurality of limiting rods 544, the limiting rods 544 are also slidably connected to the outer wall of the third sampling tube 52, and the limiting rods 544 are fixedly connected to the control pressing plate 542. Therefore, when in use, the restricting rod 544 can restrict the radial deformation of the bellows 541 and guide the expansion and contraction of the bellows 541.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an automatic multi-parameter groundwater environment layering monitoring well suitable for contaminated site, includes whole detection well casing (1) of inserting and locating underground, its characterized in that: the well casing detection device is characterized by further comprising a separation well casing (2) arranged on the inner side of the detection well casing (1) and at least one sampling device arranged on the detection well casing (1), wherein at least one group of sampling hole groups (11) are formed in the pipe wall of the detection well casing (1), each sampling hole group (11) comprises a plurality of sampling holes (111) which are vertically distributed, at least one group of sampling assemblies (21) are arranged between the detection well casing (1) and the separation well casing (2), each sampling assembly (21) comprises a plurality of sampling box bodies (211) which are distributed along the distribution direction of the sampling holes (111) of the sampling hole groups (11) and are spliced with each other, each sampling box body (211) is in a side-opening arrangement, the side-opening edges of each sampling box body (211) are fixedly connected to the inner wall of the detection well casing (1) and communicated with the sampling holes (111), a first sampling pipe (112) for discharging water is arranged at the bottom of each sampling box body (211), the first sampling pipe (112) is communicated into the separation well casing (2), and a sampling device for communicating different first sampling pipes (112) and a sampling device sliding driving device (3) for driving the sampling device; the sampling device comprises a sampling seat (4) and a sampling mechanism (5), wherein the sampling seat (4) is used for being communicated with a first sampling pipe (112), the sampling mechanism is used for pumping water out of the separation well pipe (2), the sampling seat (4) is hollow and is of a side-opening structure, the side-opening edge of the sampling seat (4) is attached to and vertically arranged on the inner wall of the separation well pipe (2) in a sliding mode, and a second sampling pipe (41) communicated with the inlet of the sampling mechanism (5) is arranged at the bottom of the sampling seat (4); sampling mechanism (5) are including sampling bucket (51) of fixed connection in sample seat (4) and compression piece (53) that are used for compressing or extracting the interior air of sampling bucket, second sampling tube (41) communicate in sampling bucket (51) and second sampling tube (41) are provided with towards first check valve (411) of sampling bucket (51) circulation, the bottom of sampling bucket (51) still communicates and upwards stretches out fourth sampling tube (521) of separating well pipe (2), and fourth sampling tube (521) are provided with towards second check valve (522) of outside circulation.

2. The automated multi-parameter groundwater environment layered monitoring well suitable for a contaminated site according to claim 1, wherein: and a filter screen (113) for filtering is arranged on the outer side of the sampling hole (111).

3. The automated multi-parameter groundwater environment layered monitoring well suitable for the contaminated site as claimed in claim 1, wherein: drive assembly (3) include that two rotations set up drive roller (31) and the overcoat of separating well casing (2) inner wall locate driving band (32) of two drive rollers (31), sample seat (4) and/or sampling mechanism (5) fixed connection in driving band (32), separate well casing (2) still are provided with and are used for driving drive roller (31) pivoted driving motor (33).

4. The automated multi-parameter groundwater environment layered monitoring well suitable for the contaminated site as claimed in claim 3, wherein: the inner wall one-to-one sampling device of separating well casing (2) is provided with a plurality of sealed tracks (22), sealed track (22) are open-sided box body column structure and opening border fixed connection in separating well casing (2) inner wall, sample seat (4) are located sealed track (22) and sealed track (22) set up the rectangular shape hole (221) that slides of vertical extension, sealed track (22) are worn out through rectangular shape hole (221) that slides in second sampling tube (41), be provided with first sealing member (23) that are used for sealed rectangular shape hole (221) that slides in sealed track (22).

5. The automated multi-parameter groundwater environment layered monitoring well suitable for the contaminated site as claimed in claim 4, wherein: the belt surface of one side, far away from the center of the separation well pipe (2), of the driving belt (32) vertically penetrates through the sealing track (22), the inner wall of the sealing track (22) is fixedly connected with a pressing strip (222) for pressing the belt surface of the driving belt (32) on the inner wall of the sealing track (22), the edge, located in the sealing track (22), of the driving belt (32) is clamped between the pressing strip (222) and the inner wall of the sealing track (22), two first sealing pieces (23) are arranged corresponding to the two side edges of the driving belt (32), each first sealing piece (23) comprises two first sealing strips (231) for clamping the belt surface of the driving belt (32), and the two first sealing strips (231) are fixedly connected to the inner walls of the pressing strip (222) and the sealing track (22) respectively.

6. The automated multi-parameter groundwater environment layered monitoring well suitable for the contaminated site as claimed in claim 3, wherein: the opening border of sample seat (4) is provided with second sealing member (42) that are used for sliding seal, second sealing member (42) are the annular and its inlay locates the opening border of sample seat (4), second sealing member (42) are hollow structure and its inside packing has sealed fat, second sealing member (42) laminate and offer a plurality of sealed mouths (421) that are used for sealed fat exhaust in one side of separating well casing (2) inner wall.

7. The automated multi-parameter groundwater environment layered monitoring well suitable for the contaminated site as claimed in claim 3, wherein: drive area (32) are including drive strip (321) and cladding in elastic layer (322) of drive strip (321) outer wall, two drive rollers (31) are located to drive strip (321) cover, just drive strip (321) are provided with and are used for can dismantling connecting piece (34) of connection with drive strip (321) both ends, the week side of connecting piece (34) is provided with elastic connection layer (323) with elastic layer (322) outer wall parallel and level.

8. The automated multi-parameter groundwater environment layered monitoring well suitable for a contaminated site as claimed in claim 7, wherein: connecting piece (34) include that two connecting plates (341) that adopt flexible material to make and a plurality of rotation set up in connecting tooth (342) of two connecting plates (341), connect in same a plurality of connecting tooth (342) of connecting plate (341) divide into two sets of and two sets of connecting tooth (342) and distribute along the length direction of drive strip (321), and are two sets of the axis of rotation of connecting tooth (342) is located the one end that two sets of connecting tooth (342) kept away from mutually, connect tooth (342) butt in connecting plate (341), and two connecting plate (341) wear to locate the connecting bolt (343) fixed connection of drive strip (321) through a plurality of respectively.

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