CN117491086A - Groundwater sampling device and sampling method for water environment treatment - Google Patents
Groundwater sampling device and sampling method for water environment treatment Download PDFInfo
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- CN117491086A CN117491086A CN202311408868.0A CN202311408868A CN117491086A CN 117491086 A CN117491086 A CN 117491086A CN 202311408868 A CN202311408868 A CN 202311408868A CN 117491086 A CN117491086 A CN 117491086A
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- 238000005070 sampling Methods 0.000 title claims abstract description 195
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000003673 groundwater Substances 0.000 title claims abstract description 46
- 239000012528 membrane Substances 0.000 claims abstract description 58
- 238000009434 installation Methods 0.000 claims description 26
- 239000011148 porous material Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims 6
- 238000005067 remediation Methods 0.000 claims 4
- 238000001514 detection method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 6
- 238000005553 drilling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention belongs to the technical field of water detection equipment, and particularly relates to an underground water sampling device and an underground water sampling method for water environment treatment. The utility model provides a groundwater sampling device for water environment treatment, establish the sampling box in the connecting pipe outside including connecting pipe and a plurality of cover, the sampling box is including installing pipe, flexible membrane and the collection subassembly that contracts, constitute the sample chamber between flexible membrane and the installing pipe, the sampling hole has been seted up on the flexible membrane, the sampling hole is linked together with the sample chamber, the stiff end that contracts and contracts the collection subassembly is connected with the installing pipe, the expansion end that contracts and contracts the collection subassembly is connected with the flexible membrane, be equipped with pneumatic control subassembly on the connecting pipe, pneumatic control subassembly is used for controlling the collection subassembly that contracts and drive the sample chamber and contract and expand, the control sampling box is sampled through the sampling hole. According to the invention, the shrinkage and expansion acquisition assembly is matched with the sampling box, so that the volume is reduced and expanded under the control of the pneumatic control assembly, the underground water is disturbed to a low degree while multi-section sampling is realized, and the accuracy of sampling is further enhanced.
Description
Technical Field
The invention belongs to the technical field of water detection equipment, and particularly relates to an underground water sampling device and an underground water sampling method for water environment treatment.
Background
In the water environment treatment operation, sampling detection and monitoring of groundwater are one of effective ways for intuitively reacting to the water environment pollution condition of the ground, and when sampling detection is carried out on multiple layers of groundwater, mutual interference among the multiple layers of groundwater is prevented, so that the water detection accuracy is intuitively influenced.
At present, in the multilayer groundwater detection process, drilling equipment is usually adopted firstly, a hole for connecting multilayer groundwater is drilled on the ground surface, then the underground multilayer water is sampled respectively through a mounting sampling pipe, a seamless pipe and the like, so that mutual interference during multilayer water sampling is prevented, meanwhile, the packer is used, a soil layer and a rock stratum are matched, the drilling is plugged, only the groundwater with the target depth is sampled, the drilling is plugged by the packer or the plug, and then only the groundwater with the current layer number is extracted, so that the accuracy of groundwater sampling is enhanced, and the mutual interference between the multilayer groundwater is reduced.
However, in practical application, on one hand, in the process of sampling multi-layer groundwater, sampling equipment needs to move up and down in a drilling hole to respectively take groundwater with different depths, in the process of moving the sampling equipment, disturbance phenomenon is easily generated on the groundwater, so that the groundwater is turbid, and the property of the groundwater is further affected, on the other hand, in the process of sampling for multiple times, the same sampling equipment is adopted, pollutants in the samples are attached to the sampling equipment, and the pollution is caused to the samples obtained later, so that the accuracy of the samples is not benefited.
Disclosure of Invention
Aiming at the problems, the invention aims to provide the groundwater sampling device and the groundwater sampling method for water environment treatment, which are matched with the sampling box by arranging the shrinkage and expansion acquisition component, so that the volume is reduced and expanded under the control of the pneumatic control component, and the groundwater disturbance degree is low while the multistage sampling is realized in the downward movement process of the sampling box, so that the sampling accuracy is enhanced.
The technical scheme of the invention is as follows: the utility model provides a groundwater sampling device for water environment treatment, is in including connecting pipe and a plurality of cover the sampling box in the connecting pipe outside, the sampling box is cavity formula structure, the sampling box is including installation tube, flexible membrane and the collection subassembly that contracts, flexible membrane fixed mounting is in the installation tube outside, and constitutes the sample chamber between flexible membrane and the installation tube, the sampling hole has been seted up on the flexible membrane, the sampling hole is linked together with the sample chamber, the stiff end of the collection subassembly that contracts with the installation tube is connected, the expansion movable end of collection subassembly that contracts with the flexible membrane is connected, be equipped with pneumatic control subassembly on the connecting pipe, pneumatic control subassembly with the collection subassembly that contracts is connected, pneumatic control subassembly is used for controlling the collection subassembly that contracts and drive the sample chamber and contract, and then realizes controlling the sampling box and sample through the sampling hole.
The telescopic collecting assembly comprises a plurality of telescopic pipes, one ends of the telescopic pipes are circumferentially equidistant and fixedly connected with the outer wall of the mounting pipe, the other ends of the telescopic pipes are connected with the inner wall of the flexible film, the outer wall of the flexible film corresponding to the telescopic pipes is provided with a valve plate, the valve plate is close to the middle part of one side of the flexible film, a through hole is formed in the middle of the through hole, a connecting rod is arranged in the through hole, the inner cavities of the telescopic pipes are respectively communicated with the inner cavities of the mounting pipe and the through hole, a diaphragm is fixedly installed in the through hole, communication holes are respectively formed in two sides of the telescopic pipes by the valve plate, the communication holes correspond to the sampling holes, an opening and closing valve plate is arranged outside the valve plate, the opening and closing valve plate is close to two ends of one side of the valve plate, plungers are respectively arranged at two ends of the valve plate, the plungers are matched with the communication holes, one ends of the connecting rod are fixedly connected with the valve plate, the other ends of the connecting rod are connected with the diaphragm, and the connecting rod penetrates through the outer side of one end of the valve plate to be provided with a spring.
The installation pipe outside is equipped with the storage tank, the storage tank is indent, under the initial state, flexible pipe shrink, valve plate will flexible membrane shutoff is inside the storage tank, both ends are fixed mounting respectively has the roof about the valve plate is kept away from flexible membrane one side.
The pneumatic control assembly comprises an extension pipe and an air pump, one end of the extension pipe is fixedly connected with the connecting pipe, and the other end of the extension pipe is connected with the air pump.
The connecting pipe is characterized in that a through hole is formed in the side wall of the connecting pipe, a connecting end is arranged in the inner cavity of the connecting pipe, a T-shaped pore canal is arranged in the connecting end, an extension pipe on the upper portion of the T-shaped pore canal is communicated, two sides of the T-shaped pore canal are communicated with the through hole, a one-way air inlet is formed in the pipe wall of the mounting pipe, one end of the one-way air inlet is communicated with the through hole, and the other end of the one-way air inlet is communicated with the inner cavity of the telescopic pipe.
The top of the connecting end is provided with a corrugated pipe, and the top of the corrugated pipe is fixedly connected with the inner wall of the extension pipe.
The lower part of the connecting end is provided with a supporting spring which is fixedly arranged on the inner wall of the connecting pipe.
The connecting pipe is provided with a chute, a clamping plate is elastically connected in the chute through a spring, the inner wall of the mounting pipe corresponds to the position of the chute, a clamping groove is formed in the position, matched with the clamping plate, one end of the clamping plate extends into the connecting pipe to be in contact with the outer wall of the connecting end, and the other end of the clamping plate is clamped with the clamping groove in the inner wall of the mounting pipe.
One end of the clamping plate, which is close to the inner cavity of the connecting end, is conical.
The groundwater sampling method for water environment treatment uses the groundwater sampling device for water environment treatment, and comprises the following steps:
s1: the method comprises the steps that a plurality of sampling boxes are sequentially sleeved on a connecting pipe, a telescopic pipe in a telescopic collection assembly is arranged between an installation pipe and a flexible film, the connecting pipe is connected with a pneumatic control assembly, air in the telescopic pipe is extracted, the telescopic pipe is contracted, the flexible film is synchronously pulled in the telescopic pipe contracting process, the flexible film is closed towards the direction of the installation pipe, the volume of a sample cavity formed between the flexible film and the installation pipe is reduced, air in the sample cavity is discharged outwards through a sampling hole, the volume of the sampling box is finally reduced, and the operation is repeated, so that the volume of the plurality of sampling boxes is compressed;
s2: the sampling box is hung in the observation well, the volume of the sampling box is reduced at the moment, the disturbance degree of underground water is reduced in the downward movement process, and the air control assembly is controlled along with the gradual decline of the position of the sampling box, when the position of the sampling box reaches the collection depth, the air control assembly is utilized to convey air into the telescopic pipe, so that the pressure intensity of the telescopic pipe is increased, the flexible membrane is pushed to move in the direction away from the installation pipe under the pushing action of air pressure, the sampling box is further enabled to be unfolded underwater, and the underground water flows into the sample cavity along the sampling hole in the expansion and unfolding processes of the sampling box, so that the sampling operation is completed.
The invention has the technical effects that: 1. according to the invention, the shrinkage and expansion acquisition assembly is matched with the sampling box, the volume of the sampling box is reduced and expanded under the control of the pneumatic control assembly, the disturbance to the underground water is reduced by reducing the volume in the downward movement process of the sampling box, and after the specified depth is reached, the underground water is promoted to enter the sampling cavity by volume expansion, so that the sampling operation is completed, and the sampling accuracy is further enhanced; 2. according to the invention, according to the regulation of air pressure, in the process of increasing the air pressure, the plurality of telescopic pipes are inflated sequentially, meanwhile, in the sampling process, the expanded sampling box is separated from the connecting pipe by utilizing the movement of the connecting end and is fixed at the sampling position under the friction force action of the buoyancy and the top plate and the well wall, so that the multistage sampling is realized, the movement of the sampling box after the expansion is not realized, the disturbance degree of groundwater is low, and the sampling accuracy is further enhanced.
Further description will be made below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an underground water sampling device for water environment treatment according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a sampling cartridge according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a connection structure of a sampling cartridge according to an embodiment of the present invention.
Fig. 4 is a schematic diagram showing connection between the mounting tube and the telescopic tube and between the mounting tube and the valve plate according to the embodiment of the present invention.
FIG. 5 is a cross-sectional view of the connection of the connecting tube, bellows and sampling cartridge according to an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
FIG. 7 is a partial enlarged view at B in FIG. 5
Reference numerals: 1-a sampling box; 11-mounting a tube; 12-a flexible film; 13-sample chamber; 2-extension pipes; 21-telescopic tube; 22-sampling holes; 23-a receiving groove; 24-valve plate; 25-top plate; 26-opening and closing the valve plate; 27-a conduction groove; 28-a membrane; 29-a spring; 30-communicating holes; 261-plunger; 262-connecting rod; 3-connecting pipes; 31-a one-way air inlet; 32-connecting ends; 33-via holes; 34-an air pump; 4-corrugated pipe; 41-supporting springs; 42-sliding grooves; 43-clamping plate; 44-card slot.
Detailed Description
Example 1
As shown in fig. 1-7, an underground water sampling device for water environment treatment comprises a connecting pipe 3 and a plurality of sampling boxes 1 sleeved on the outer side of the connecting pipe 3, wherein each sampling box 1 is a cavity type structure, each sampling box 1 comprises a mounting pipe 11, a flexible membrane 12 and a shrinkage and expansion acquisition component, the flexible membrane 12 is fixedly installed on the outer side of the mounting pipe 11, a sample cavity 13 is formed between the flexible membrane 12 and the mounting pipe 11, a sampling hole 22 is formed in the flexible membrane 12, the sampling hole 22 is communicated with the sample cavity 13, the fixed end of the shrinkage and expansion acquisition component is connected with the mounting pipe 11, the movable end of the shrinkage and expansion acquisition component is connected with the flexible membrane 12, a pneumatic control component is arranged on the connecting pipe 3 and is connected with the shrinkage and expansion acquisition component, and the pneumatic control component is used for controlling the shrinkage and expansion acquisition component to drive the sample cavity 13 to shrink, and further realizing the control of the sampling boxes 1 to sample through the sampling hole 22.
In the practical use process, the plurality of sampling boxes 1 are sequentially sleeved on the connecting pipe 3, the telescopic pipes 21 in the telescopic collection assembly are installed between the mounting pipe 11 and the flexible membrane 12, the connecting pipe 3 is connected with the pneumatic control assembly, the telescopic pipes 21 are contracted by extracting air in the telescopic pipes 21, the flexible membrane 12 is synchronously pulled in the contraction process of the telescopic pipes 21, the flexible membrane 12 is enabled to be close to the mounting pipe 11, the volume of a sample cavity 13 formed between the flexible membrane 12 and the mounting pipe 11 is reduced, air in the sample cavity 13 is discharged outwards through the sampling holes 22, finally the volume of the sampling boxes 1 is reduced, the operation is repeated, the volume of the plurality of sampling boxes 1 is compressed, the sampling boxes 1 are suspended in an observation well, the disturbance degree of underground water is reduced in the downward movement process due to the fact that the volume of the sampling boxes 1 is reduced, when the position of the sampling boxes 1 reaches the collection depth, the pneumatic control assembly is controlled, the pneumatic control assembly is utilized to convey air into the telescopic pipes 21, the telescopic pipes 21 are enabled to be increased, under the pushing action of air pressure, the flexible membrane 12 is pushed to move towards the direction of the sampling boxes 1, the underwater sample cavity 13 is expanded, the sampling boxes are further expanded in the underwater operation process, and the sampling boxes 1 are expanded, and the sampling boxes are further expanded in the underground water in the underground operation process. In order to facilitate the use of the sampling box 1, the aperture of the sampling hole 22 is smaller, so that the flow rate of groundwater to the inside or the outside of the sampling cavity 13 is lower, the content of groundwater entering the sampling cavity 13 through the sampling hole 22 can be reduced in the downward movement process of the sampling box 1, and the leakage efficiency of water samples in the sampling cavity 13 can be reduced after the sampling is finished. According to the invention, the shrinkage and expansion acquisition assembly is matched with the sampling box, the volume of the sampling box is reduced and expanded under the control of the pneumatic control assembly, the disturbance to the underground water is reduced by reducing the volume in the downward movement process of the sampling box, and after the specified depth is reached, the underground water is promoted to enter the sampling cavity by volume expansion, so that the sampling operation is completed, and the sampling accuracy is further enhanced.
Example 2
Preferably, in this embodiment, on the basis of embodiment 1, the collapsible and expandable collection assembly includes a plurality of telescopic tubes 21, a plurality of telescopic tubes 21 one end along circumference equidistance with installation pipe 11 outer wall fixed connection, the other end with flexible membrane 12 inner wall is connected, flexible membrane 12 outer wall corresponding to telescopic tubes 21 is equipped with valve plate 24, valve plate 24 is close to flexible membrane 12 one side middle part has seted up conduction groove 27, conduction groove 27 middle part is equipped with the through-hole, be equipped with connecting rod 262 in the through-hole, the inner chamber of telescopic tubes 21 respectively with the inner chamber of installation pipe 11 and conduction groove 27 are linked together, fixed mounting has diaphragm 28 in the conduction groove 27, valve plate 24 is equipped with intercommunicating pore 30 respectively in telescopic tubes 21 both sides, intercommunicating pore 30 with sampling hole 22 corresponds, the valve plate 24 outside is equipped with and opens and closes valve plate 26, valve plate 26 is close to valve plate 24 one side both ends are equipped with plunger 261 respectively, plunger 261 with intercommunicating with opening and closing 26, connecting rod 262 one end is with opening and closing 26 fixed connection, the other end is connected with diaphragm 28, connecting rod 29 is equipped with the outside of valve plate 24 is passed through the valve plate 29.
In the practical use process, in order to further reduce the infiltration amount of underground water into the sample cavity 13 in the submergence process of the sampling box 1, the opening and closing valve plate 26 and the diaphragm 28 are arranged, under the submergence state, the telescopic pipe 21 is at normal pressure or negative pressure, at the moment, the opening and closing valve plate 26 moves into the sampling hole 22 and the through hole 33 under the action of the spring, the diaphragm 28 is pushed to deform towards the telescopic pipe 21, when the air pressure in the telescopic pipe 21 is gradually increased, the diaphragm 28 deforms towards the direction far away from the telescopic pipe 21 under the action of the air pressure, the opening and closing valve plate 26 is pushed to move outwards to the through hole 27, so that the opening and closing valve plate 26 fails to seal the sampling hole 22, at the moment, water can flow into the sample cavity 13 through the sampling hole 22, and it is required to be known that the telescopic pipe 21 penetrates through the flexible film 12 and is conducted with the through hole 27, so that the air pressure in the telescopic pipe 21 directly acts on the diaphragm 28, and therefore the change of the air pressure in the telescopic pipe 21 can push the diaphragm 28 to deform towards different directions, and the opening and closing of the sampling hole 22 can be controlled.
Example 3
Preferably, in this embodiment 1 or embodiment 2, a storage groove 23 is formed on the outer side of the mounting tube 11, the storage groove 23 is concave, in an initial state, the telescopic tube 21 is contracted, the flexible membrane 12 is blocked in the storage groove 23 by the valve plate 24, and top plates 25 are fixedly mounted on the upper and lower ends of the side of the valve plate 24 away from the flexible membrane 12 respectively.
In the practical use process, the mounting tube 11 is provided with the storage groove 23, the flexible membrane 12 and the telescopic tube 21 extend into the storage groove 23, the flexible membrane 12 is fixedly provided with the plurality of valve plates 24, the sampling holes 22 penetrate through the valve plates 24, the telescopic tube 21 is contracted in the initial state, the valve plates 24 block the flexible membrane 12 in the storage groove 23, when the sampling box 1 is compressed, the flexible membrane 12 is compressed by arranging the storage groove 23 on the mounting tube 11, then is blocked in the storage groove 23, and meanwhile, the valve plates 24 are arranged, so that when the telescopic tube 21 is contracted, the valve plates 24 are pulled to push the flexible membrane 12 to move, and when the telescopic tube 21 is extended, the flexible membrane 12 is pulled to move outwards by the valve plates 24, so that the contraction and expansion efficiency of the flexible membrane 12 is enhanced, and simultaneously, the plurality of valve plates 24 encircle the outside the flexible membrane 12 after the contraction is completed, the flexible membrane 12 can be protected, and the probability of damage to the flexible membrane 12 is reduced. A top plate 25 is fixedly arranged on one side of the valve plate 24 far away from the flexible membrane 12, when the telescopic pipe 21 stretches under the action of the pneumatic control assembly, the telescopic pipe 21 pushes the valve plate 24 to move, so that the valve plate 24 is far away from the mounting pipe 11, the top plate 25 exists, when the valve plate 24 approaches to the wall of an observation well, a certain gap exists between the valve plate 24 and the wall of the well by using the top plate 25, and water flows into the sampling holes 22 on the valve plate 24 conveniently.
Example 4
Preferably, in this embodiment, on the basis of embodiment 1 or embodiment 3, the pneumatic control assembly includes an extension tube 2 and an air pump 34, one end of the extension tube 2 is fixedly connected to the connection tube 3, and the other end is connected to the air pump 34.
In the actual use process, the pneumatic control assembly comprises the extension pipe 2 and the air pump 34, one end of the extension pipe 2 is fixedly connected with the connecting pipe 3, the other end of the extension pipe 2 is connected with the air pump 34, external air is pumped by the air pump 34 and conveyed into the extension pipe 2, and is conveyed into the connecting pipe 3 and the telescopic pipe 21 along the extension pipe 2, so that the air pressure in the telescopic pipe 21 is increased, the telescopic pipe 21 pushes the flexible film 12 to move in a direction away from the mounting pipe 11 under the action of the air pressure, finally the volume of the sampling box 1 is increased, the sampling hole 22 is opened, and then external underground water can enter the sample cavity 13, so that the sampling operation is completed.
Example 5
Preferably, in this embodiment, on the basis of embodiment 1 or embodiment 4, a through hole 33 is formed in a side wall of the connecting pipe 3, a connecting end 32 is disposed in an inner cavity of the connecting pipe 3, a T-shaped hole is disposed in the connecting end 32, the extension pipe 2 on the upper portion of the T-shaped hole is conducted, two sides of the T-shaped hole are communicated with the through hole 33, a unidirectional air inlet hole 31 is formed in a wall of the mounting pipe 11, one end of the unidirectional air inlet hole 31 is communicated with the through hole 33, and the other end of the unidirectional air inlet hole is communicated with an inner cavity of the telescopic pipe 21.
In the practical use process, the side wall of the connecting pipe 3 is provided with the through hole 33, the inner cavity of the connecting pipe 3 is provided with the connecting end 32, the connecting end 32 is internally provided with the T-shaped pore canal, the extension pipe 2 at the upper part of the T-shaped pore canal is communicated with the through hole 33, the pipe wall of the mounting pipe 11 is internally provided with the one-way air inlet hole 31, one end of the one-way air inlet hole 31 is communicated with the through hole 33, the other end of the one-way air inlet hole is communicated with the inner cavity of the telescopic pipe 21, when the extension pipe 2 carries the sampling box 1 to a designated depth, the air pump 34 is started at the moment, the air pump 34 pumps outside air, the outside air and is conveyed into the extension pipe 2, and is conveyed into the connecting pipe 3 along the extension pipe 2, finally, through the T-shaped pore canal which is arranged on the connecting end 32, the air inlet hole 33 and the one-way air inlet hole 31 can only flow in a one way under the normal state, and the flowing direction is towards the telescopic pipe 21, and under the abnormal state, such as under the manual operation state, the one-way air inlet hole 31 is in the two-way conduction state, so that the air enters the telescopic pipe 21, the air pressure is increased, the air pressure in the telescopic pipe 21 is pushed, the air pressure is pushed to the flexible film 12 to move away from the sampling box 1, the air pressure is pushed to the air pressure, the sampling box is opened, and the air pressure is opened, and the sample volume is finally, and the sample volume is increased, and the air pressure is the sample pressure and the sample is moved into the sampling box 13.
Example 6
Preferably, in this embodiment, on the basis of embodiment 1 or embodiment 5, a bellows 4 is disposed at the top of the connection end 32, and the top of the bellows 4 is fixedly connected with the inner wall of the extension tube 2.
In the practical use process, in the water environment treatment, groundwater is sampled and detected, necessary data support is provided for judging the environmental pollution degree, in order to enhance the comprehensiveness and credibility of data in the groundwater detection, the consistency of detection data and the actual groundwater data is enhanced by combining multiple sampling modes such as multiple sampling, multiple depth sampling, multiple position sampling within the same depth range and the like generally according to the groundwater depth, in the multiple sampling process, the movement of a sampling container can generate disturbance to the groundwater, and the larger the container is, the higher the disturbance degree is, so that the groundwater is turbid, and the obtained sample is distorted. Specifically, the top of the connecting end 32 is provided with the bellows 4, the top of the bellows 4 is fixedly connected with the inner wall of the extension tube 2, and the plurality of sampling boxes 1 may need to collect groundwater at different depths, so that in an initial state, when the air pressure in the extension tube 2 is normal pressure or negative pressure, under the action of the support spring 41, the bellows 4 is in a contracted state, the hole groove on the connecting end 32 is aligned with the topmost through hole 33, that is, the connecting end 32 is conducted with the telescopic tube 21 in the topmost sampling box 1 at the moment, when the first collecting point is reached, the air pump 34 is started to convey air into the extension tube 2, the air finally flows into the telescopic tube 21 in the topmost sampling box 1, so that the length of the telescopic tube 21 is increased, and at the moment, the length of the telescopic tube 21 is increased, the air pressure intensity in the extension tube 2 and the extension tube 21 is gradually increased, when the length of the extension tube 21 reaches the maximum, the air pressure intensity in the extension tube 2 is increased at this time, the bellows 4 is also stretched under the action of air pressure and synchronously pushes the supporting spring 41 to shorten, the connecting end 32 arranged between the supporting spring 41 and the bellows 4 slides in the connecting tube 3, finally, the hole groove on the connecting end 32 is completely misplaced with the first conducting groove 27, at this time, the air is stopped from being conveyed into the extension tube 2, the extension tube 2 is pushed downwards, during the downward movement of the extension tube 2, because the first sampling box 1 is already expanded, the buoyancy effect received by the extension tube 2 is increased, the sampling box 1 is further separated from the connecting tube 3, and under the buoyancy effect received by the unexpanded sampling box 1, the friction force with the connecting tube 3 cannot be overcome, therefore, when reaching the second sampling point, the air pump 34 is started again, the air pump 34 delivers air into the extension tube 2, so that the air pressure in the extension tube 2 is continuously increased, the bellows 4 is continuously extended, the supporting spring 41 is continuously compressed, the connecting end 32 is finally communicated with the second through hole 33 on the connecting tube 3, air is delivered into the telescopic tube 21 in the second sampling box 1, and the repeated operation can sequentially enable the sampling boxes 1 to collect samples at different depths.
Because the volume change of the sampling box 1 is related to the length change of the telescopic pipe 21, in some embodiments of the invention, the sampling boxes 1 with different expansion coefficients are selected before sampling, so that the diameter of the sampling box 1 after final complete expansion is slightly larger than the diameter of an observation well, when the sampling box 1 expands, the top plate 25 at the outermost side of the sampling box 1 contacts with the well wall, the sampling box 1 is fixed in the well under the action of air pressure, thereby facilitating fixed-point sampling, avoiding floating up after the expansion of the sampling box 1, and when the extension pipe 2 is recovered, the T-shaped connecting pipe 3 pushes the sampling box 1 to move up, so that the valve plate 24 and the flexible film 12 are not contacted with the well wall, and the damage probability of the sampling box 1 can be reduced.
Example 7
Preferably, in this embodiment 1 or embodiment 6, a supporting spring 41 is disposed at the lower portion of the connecting end 32, and the supporting spring 41 is fixedly mounted on the inner wall of the connecting tube 3.
In the practical use process, the lower part of the connecting end 32 is provided with the supporting spring 41, so that the connecting end 32 is convenient to reset.
Example 8
Preferably, in this embodiment, on the basis of embodiment 1 or embodiment 7, a chute 42 is formed in the connecting pipe 3, a clamping plate 43 is elastically connected in the chute 42 through a spring, a clamping groove 44 is formed in a position of the inner wall of the mounting pipe 11 corresponding to the chute 42, the clamping groove 44 is matched with the clamping plate 43, one end of the clamping plate 43 extends into the connecting pipe 3 to contact with the outer wall of the connecting end 32, and the other end is clamped with the clamping groove 44 in the inner wall of the mounting pipe 11.
In the practical use process, in order to further enhance the stability of the installation tube 11 on the connecting tube 3, by arranging the clamping plate 43, when the pneumatic control assembly does not push the connecting end 32 to move, the hole groove on the connecting end 32 is aligned with the topmost through hole 33 on the connecting tube 3, the side wall of the clamping plate is aligned with the clamping plate 43, the clamping plate 43 is pressed in the sliding groove 42, one side of the clamping block far away from the connecting end 32 is attached to the installation tube 11, further, the friction force between the topmost installation tube 11 and the connecting tube 3 is stronger, further, the topmost installation tube 11 is fixed, after the connecting end 32 moves, the connecting end 32 is finally misplaced with the clamping plate 43 along with the increase of the moving distance of the connecting end 32, at the moment, under the action of the spring in the sliding groove 42, the clamping plate 43 moves into the inner cavity of the connecting tube 3, so that the clamping plate 43 is separated from the installation tube 11, at the moment, the friction force between the installation tube 11 and the connecting tube 3 is smaller, and the installation tube 11 is conveniently separated from the connecting tube 3, and when the hole groove on the connecting end 32 is conducted with the second through hole 33, the connecting tube 32, the connecting end 32 is synchronously pressed on the second clamping plate 43, further, the connecting end 32 is effectively pressed, and the connecting tube 1 is further, the connecting tube is prevented from being separated from the connecting tube 3, and the connecting tube 32 is further, and the connecting tube is further separated from the connecting tube 3, and the connecting tube 32, and the connecting end is not misplaced, and the connecting tube 3, and can be further and the end is simultaneously replaced. The clamping groove 44 is formed in the mounting pipe 11, so that the fixing effect of the clamping plate 43 on the mounting pipe 11 is further improved, the alignment effect of the unidirectional air inlet hole 31 on the mounting pipe 11 and the through hole 33 on the connecting pipe 3 is good, the accuracy of gas flow is enhanced, and the air pressure control effect of the air hole assembly is good.
Example 9
Preferably, in this embodiment, the end of the clamping plate 43 near the inner cavity of the connecting end 32 is tapered based on embodiment 1 or embodiment 8.
In the actual use process, the clamping plate 43 with the conical design is convenient to contact with the connecting end 32 in the sliding process of the connecting end 32, and the clamping between the connecting end 32 and the clamping plate 43 is avoided, so that the equipment cannot be normally used.
Example 10
The groundwater sampling method for water environment treatment uses the groundwater sampling device for water environment treatment, and comprises the following steps:
s1: the method comprises the steps that a plurality of sampling boxes 1 are sequentially sleeved on a connecting pipe 3, a telescopic pipe 21 in a telescopic collection assembly is installed between an installation pipe 11 and a flexible membrane 12, the connecting pipe 3 is connected with a pneumatic control assembly, the telescopic pipe 21 is contracted by extracting air in the telescopic pipe 21, the flexible membrane 12 is synchronously pulled in the contraction process of the telescopic pipe 21, the flexible membrane 12 is drawn towards the direction of the installation pipe 11, the volume of a sample cavity 13 formed between the flexible membrane 12 and the installation pipe 11 is reduced, air in the sample cavity 13 is discharged outwards through a sampling hole 22, the volume of the sampling boxes 1 is finally reduced, and the operation is repeated, so that the volumes of the sampling boxes 1 are compressed;
s2: the sampling box 1 is hung in an observation well, because the volume of the sampling box 1 is reduced at the moment, the disturbance degree of underground water is reduced in the downward movement process, and along with the gradual decline of the position of the sampling box 1, when the position of the sampling box 1 reaches the collection depth, the pneumatic control assembly is controlled, the pneumatic control assembly is utilized to convey air into the telescopic pipe 21, the pressure of the telescopic pipe 21 is increased, the flexible membrane 12 is pushed to move in the direction away from the mounting pipe 11 under the pushing action of air pressure, the sampling box 1 is further unfolded underwater, and the underground water flows into the sampling cavity 13 along the sampling hole 22 in the expansion and unfolding process of the sampling box 1, so that the sampling operation is completed.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a water environment administers with groundwater sampling device which characterized in that: including connecting pipe (3) and a plurality of cover are established sampling box (1) in connecting pipe (3) outside, sampling box (1) is cavity formula structure body, sampling box (1) is including installation pipe (11), flexible membrane (12) and the collection subassembly that contracts, flexible membrane (12) fixed mounting is in the installation pipe (11) outside, and constitutes sample chamber (13) between flexible membrane (12) and the installation pipe (11), sample hole (22) have been seted up on flexible membrane (12), sample hole (22) are linked together with sample chamber (13), the stiff end of the collection subassembly that contracts with installation pipe (11) are connected, the expansion end of the collection subassembly that contracts with flexible membrane (12) are connected, be equipped with pneumatic control subassembly on connecting pipe (3), pneumatic control subassembly with the collection subassembly that contracts, pneumatic control subassembly is used for controlling the collection subassembly that contracts and drive sample chamber (13) and contract, and then realize that control sampling box (1) is through sample hole (22).
2. The groundwater sampling device for water environmental remediation according to claim 1, wherein: the telescopic collecting assembly comprises a plurality of telescopic pipes (21), one ends of the telescopic pipes (21) are fixedly connected with the outer wall of the mounting pipe (11) along the circumferential direction at equal intervals, the other ends of the telescopic pipes are connected with the inner wall of the flexible membrane (12), the outer wall of the flexible membrane (12) corresponding to the telescopic pipes (21) is provided with a valve plate (24), the middle part of one side of the valve plate (24) is close to the flexible membrane (12), a conducting groove (27) is formed in the middle of the conducting groove (27), a through hole is formed in the middle of the conducting groove, a connecting rod (262) is arranged in the through hole, an inner cavity of the telescopic pipe (21) is respectively communicated with the inner cavity of the mounting pipe (11) and the conducting groove (27), a diaphragm (28) is fixedly arranged in the conducting groove (27), communication holes (30) are respectively formed in two sides of the telescopic pipe (21), the communication holes (30) are corresponding to the sampling holes (22), the outer side of the valve plate (24) is provided with a plug (261) respectively arranged at two ends of one side of the valve plate (26) close to the valve plate (24), the plug 261) is respectively connected with the other end of the connecting rod (28), the connecting rod (262) penetrates through the outer side of one end of the valve plate (24) and is provided with a spring (29).
3. The groundwater sampling device for water environmental remediation according to claim 2, wherein: the installation pipe (11) outside is equipped with accomodates groove (23), accomodate groove (23) for indent, under the initial state, flexible membrane (12) shutoff is inside accomodate groove (23) to flexible pipe (21) shrink, valve plate (24), both ends are fixed mounting respectively in the upper and lower both ends of flexible membrane (12) one side was kept away from to valve plate (24).
4. The groundwater sampling device for water environmental remediation according to claim 2, wherein: the pneumatic control assembly comprises an extension pipe (2) and an air pump (34), one end of the extension pipe (2) is fixedly connected with the connecting pipe (3), and the other end of the extension pipe is connected with the air pump (34).
5. The groundwater sampling device for water environment treatment according to claim 4, wherein: the utility model discloses a flexible pipe, including connecting pipe (3), connecting pipe (3) lateral wall is equipped with via hole (33), connecting pipe (3) inner chamber is equipped with link (32), be equipped with T type pore in link (32), T type pore upper portion extension pipe (2) switch on, T type pore both sides with via hole (33) are linked together, one-way inlet port (31) have been seted up in installing pipe (11) pipe wall, one end of one-way inlet port (31) with via hole (33) intercommunication, the other end with flexible pipe (21) inner chamber intercommunication.
6. The groundwater sampling device for water environment treatment according to claim 5, wherein: the top of the connecting end (32) is provided with a corrugated pipe (4), and the top of the corrugated pipe (4) is fixedly connected with the inner wall of the extension pipe (2).
7. The groundwater sampling device for water environment treatment according to claim 5, wherein: the lower part of the connecting end (32) is provided with a supporting spring (41), and the supporting spring (41) is fixedly arranged on the inner wall of the connecting pipe (3).
8. The groundwater sampling device for water environmental remediation according to claim 1, wherein: the connecting pipe (3) is provided with a chute (42), the chute (42) is internally provided with a clamping plate (43) through a spring elastic connection, the inner wall of the mounting pipe (11) is provided with a clamping groove (44) corresponding to the position of the chute (42), the clamping groove (44) is matched with the clamping plate (43), one end of the clamping plate (43) extends into the connecting pipe (3) to be contacted with the outer wall of the connecting end (32), and the other end of the clamping plate is clamped with the clamping groove (44) of the inner wall of the mounting pipe (11).
9. The groundwater sampling device for water environment treatment according to claim 8, wherein: one end of the clamping plate (43) close to the inner cavity of the connecting end (32) is conical.
10. A method for sampling groundwater for water environmental treatment, using the groundwater sampling device for water environmental treatment according to claim 2, characterized in that: the method comprises the following steps:
s1: the method comprises the steps that a plurality of sampling boxes (1) are sequentially sleeved on a connecting pipe (3), a telescopic pipe (21) in a telescopic collecting assembly is arranged between a mounting pipe (11) and a flexible membrane (12), the connecting pipe (3) is connected with a pneumatic control assembly, the telescopic pipe (21) is contracted by extracting air in the telescopic pipe (21), the flexible membrane (12) is synchronously pulled in the contraction process of the telescopic pipe (21), the flexible membrane (12) is led to be close to the direction of the mounting pipe (11), the volume of a sample cavity (13) formed between the flexible membrane (12) and the mounting pipe (11) is reduced, the air in the sample cavity (13) is discharged outwards through a sampling hole (22), the volume of the sampling box (1) is finally reduced, and the operation is repeated, so that the volumes of the plurality of sampling boxes (1) are compressed;
s2: the sampling box (1) is hung in the observation well, the volume of the sampling box (1) is reduced at the moment, the disturbance degree of underground water is reduced in the downward movement process, and the underground water flows into the sample cavity (13) along the sampling hole (22) in the expansion and unfolding process of the sampling box (1) due to the fact that the volume of the sampling box (1) is reduced, when the position of the sampling box (1) reaches the collection depth, the pneumatic control assembly is utilized to convey air into the telescopic pipe (21), the pressure of the telescopic pipe (21) is increased, the flexible film (12) is pushed to move in the direction away from the mounting pipe (11) under the pushing action of air pressure, and then the sampling box (1) is unfolded underwater, and the underground water flows into the sample cavity (13) along the sampling hole (22) in the expansion and unfolding process, so that the sampling operation is completed.
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| CN117491086B (en) | 2024-06-18 |
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