CN113063634B - Groundwater quality of water monitoring sampling device - Google Patents
Groundwater quality of water monitoring sampling device Download PDFInfo
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- CN113063634B CN113063634B CN202110328898.5A CN202110328898A CN113063634B CN 113063634 B CN113063634 B CN 113063634B CN 202110328898 A CN202110328898 A CN 202110328898A CN 113063634 B CN113063634 B CN 113063634B
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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Abstract
The invention relates to an underground water quality monitoring and sampling device, which comprises a filter cartridge and a sampler, wherein the filter cartridge comprises an outer cylinder and an inner cylinder, a plurality of filter holes are formed in the peripheral wall of the outer cylinder, a filter core is arranged in the filter holes, a cover body capable of closing an opening at the upper end of the outer cylinder is hinged at the upper end of the outer cylinder, a U-shaped groove is formed at the upper end of the inner cylinder, a plurality of water passing holes are formed in the peripheral wall of the inner cylinder, a water draining hole is formed in the top surface of the inner cylinder, a plurality of inclined through holes are formed in the peripheral wall of the inner cylinder, the inner end of each inclined through hole is communicated with the water draining hole, the sampler comprises a positioning rod, a plurality of sampling bottles and a water pump, when the sampler is arranged in the filter cartridge, two ends of a cross rod of the positioning rod are arranged in the U-shaped groove of the inner cylinder, water inlets of the plurality of sampling bottles are coaxially opposite to the water passing holes of the inner cylinder one by one, and the outer ends of the water inlets are contacted with the inner ends of the water passing holes. The invention solves the problems that the water sample collected by the existing sampling device is not water in an aquifer, so that the detection value is inaccurate and is not representative.
Description
Technical Field
The invention relates to the technical field of water quality monitoring, in particular to an underground water quality monitoring sampling device.
Background
Groundwater is an important natural resource, an important component of hydrologic cycle, playing an important role in human life. The quality of groundwater depends to a large extent on natural processes and human activities, which have been increasing in recent years, exposing groundwater resources to the double threat of reduced water content and water pollution. Groundwater remains an important source of drinking water in many locations and provides a source of production water for industrial and agricultural development. Contaminants in groundwater can cause serious harm to human health and crop growth, and can cause serious impact on regional ecological environment and social development. Therefore, it is necessary to accurately obtain a groundwater sample of an aquifer, detect the water quality condition thereof, and evaluate the safety thereof.
Groundwater occurrence conditions are special and carry a lot of information, so people often collect groundwater samples for chemical analysis for various purposes, and further obtain useful information, for example: where groundwater is replenished, when it is replenished, whether it is suitable for drinking, whether it is affected or even contaminated by human activity, whether the repair work is effective, etc.
Groundwater sampling is most often done in wells. When we pump water from a well, the water stored in the well pipe firstly flows out, then the residual water in the filter material layer outside the screen pipe is remained, and finally the fresh groundwater sample flows out from the communicated water-bearing layer. In any event, the collected sample of groundwater should, of course, be fresh groundwater present in the aquifer.
The patent document with the application number of 202021180006.9 discloses a novel underground water sampler, which comprises a cylindrical vertical pipe, a top plate, a mounting plate, a bidirectional screw rod, a water storage tank and a sampling pipe; the cylinder riser top is installed and is provided with the roof, and upper chute has been seted up at roof inboard middle part, and lower chute has been seted up to cylinder riser inner bottom, and the top and the bottom of mounting panel are through respectively through last slider and lower slider slip establishing in the upper chute of roof and the lower chute of cylinder riser, and the water storage tank is installed on the mounting panel lateral wall, and water storage tank one end is connected with the sampling tube through the connector.
According to the technical scheme, although the water samples can be sampled at different depths, the sampled water samples are still water stored in the well, but not water in the aquifer at the designated depth, substances of other aquifers are mixed, and the water quality characteristics in the aquifer at the designated depth cannot be represented, so that the numerical value detected by the sampling device is inaccurate and not representative.
Disclosure of Invention
The invention provides a groundwater quality monitoring sampling device, which aims to provide an accurate sampling device for collecting water in an aquifer with a specified depth, so that the water sample is more representative and more accurate.
In order to achieve the above object, the technical scheme of the present invention is as follows:
the underground water quality monitoring and sampling device comprises a filter cartridge and a sampler;
the filter cartridge comprises an outer cylinder and an inner cylinder, wherein the outer cylinder is a cylinder body with an opening at the upper end, a plurality of filter holes penetrating through the inner peripheral wall and the outer peripheral wall of the outer cylinder are formed in the left side wall of the outer cylinder at intervals along the height direction of the outer cylinder, a filter element is arranged in each filter hole, a clamping groove is formed in the inner peripheral wall of the right part of the rear side of the central axis of the outer cylinder, the clamping groove is an arc-shaped groove body protruding outwards along the inner wall of the outer cylinder and having an inward opening, the lower end of the clamping groove is flush with the inner bottom surface of the outer cylinder, the upper end of the clamping groove penetrates through the upper end of the outer cylinder, the outer cylinder is buried underground, the upper end of the outer cylinder is exposed out of the ground, and a cover body capable of sealing the opening at the upper end of the outer cylinder is hinged at the upper end of the outer cylinder;
the inner cylinder is penetrated and installed in the outer cylinder, the inner cylinder is a tubular body with openings at the upper end and the lower end, the upper ends of the left side and the right side of the inner cylinder are respectively provided with a U-shaped groove which is upwards opened and penetrates through the circumferential wall of the inner cylinder, the U-shaped grooves at the left side and the right side of the inner cylinder are mutually symmetrically communicated, the lower end of the inner cylinder is contacted with the inner bottom surface of the outer cylinder, the circumferential wall of the inner cylinder is in gapless sliding contact with the inner circumferential wall of the outer cylinder, a plurality of water passing holes which correspond to the filtering holes and penetrate through the inner circumferential wall of the inner cylinder are arranged on the circumferential wall of the inner cylinder, a water draining hole which penetrates through the upper end surface and the lower end surface of the inner cylinder is arranged on the top surface of the left front part of the central axis of the inner cylinder, the direction that the water draining hole is close to the central axis of the inner cylinder is the inner side, the direction that the water draining hole is close to the outer wall of the inner cylinder is the outer side, the inner cylinder is characterized in that a plurality of square inclined through holes are formed in the outer peripheral wall of the left front part of the central axis of the inner cylinder at intervals along the height direction of the inner cylinder, the inclined through holes incline upwards from inside to outside, the centers of the outer ends of the inclined through holes are horizontally aligned with the centers of the filtering holes in the outer cylinder one by one, the inner end of each inclined through hole is communicated with a water outlet, the lower end of the inner cylinder is upwards provided with a connecting groove with a downward opening, the connecting groove is communicated with the inner cylinder and the water outlet, the outer peripheral wall of the inner cylinder is provided with a clamping column which is arranged in the clamping groove along the height direction of the inner cylinder, the clamping column is a fan-shaped cylinder with a small inner side and a large outer side, the front side and the rear side of the inner peripheral wall of the inner cylinder are provided with strip-shaped positioning grooves along the height direction of the inner cylinder, and the positioning grooves penetrate through the upper end face and the lower end face of the inner cylinder;
the sampler comprises a positioning rod, a plurality of sampling bottles and a water pump, wherein the positioning rod comprises a cross rod and a first vertical rod, the top end of the first vertical rod is connected with the lower side of the middle part of the cross rod to form a T-shaped rod body, the lower end of the first vertical rod is provided with a first rod sleeve, the first rod sleeve is a cylindrical body with an opening at the lower end, the inner diameter of the first rod sleeve corresponds to the outer diameter of the first vertical rod, the first rod sleeve is provided with a pin hole penetrating through the peripheral wall of the first rod sleeve, the sampling bottle comprises a bottle body and a second vertical rod, the second vertical rod is a vertical rod body with the same diameter as the first vertical rod, the upper end of the second vertical rod is provided with a positioning hole penetrating through the second vertical rod, the positioning hole is the same as the diameter of the pin hole, the inner peripheral wall of the positioning hole is provided with internal threads, the lower end of the second vertical rod is coaxially connected with the bottle body, the front part and the rear part of the outer peripheral wall of the bottle body are provided with positioning columns which correspond to positioning grooves on the inner cylinder, the left end of the outer peripheral wall of the bottle body is provided with a water inlet hole which is communicated with the inside and the outside of the bottle body, the right part of the upper surface of the bottle body is provided with a communicating pipe which penetrates through the inside and the outside of the bottle body, the upper end of the communicating pipe is provided with a polytetrafluoroethylene microporous membrane, the peripheral wall of the bottle body at the front side of the communicating pipe is provided with a through groove which is concave and open outwards in the bottle body, the through groove is a square groove body, the upper end and the lower end of the through groove respectively penetrate through the upper end and the lower end of the bottle body, the lower end of the bottle body is coaxially provided with a second rod sleeve, the shape and the size of the second rod sleeve are consistent with those of the first rod sleeve, the sampling bottles are sequentially and coaxially connected from top to bottom, the water inlet holes of the sampling bottles are consistent, the upper ends of the second vertical rods of every two adjacent sampling bottles positioned below are stretched into the second rod sleeve of the sampling bottle positioned above and are positioned and connected by bolts screwed into positioning holes, the second vertical rod of the uppermost sampling bottle extends into the first rod sleeve of the positioning rod and is in positioning connection through a bolt screwed into the positioning hole, a water pump is arranged below the lowermost sampling bottle, the upper end of the water pump is connected with a third vertical rod, the shape and the size of the third vertical rod are consistent with those of the second vertical rod, the upper end of the third vertical rod extends into the second rod sleeve of the lowermost sampling bottle and is in positioning connection through a bolt screwed into the positioning hole, and a cable and a water outlet pipe of the water pump are positioned in through grooves of a plurality of sampling bottles;
when the sampler is placed in the cartridge filter, the bottle outer peripheral wall of the sampling bottle is in gapless sliding contact with the inner peripheral wall of the inner cylinder, two ends of a cross rod of the positioning rod are placed in the U-shaped groove of the inner cylinder, water inlets of a plurality of sampling bottles are coaxially opposite to water passing holes of the inner cylinder one by one, the outer ends of the water inlets are in contact with the inner ends of the water passing holes, and a space is reserved between the lower end of the water pump and the inner bottom surface of the outer cylinder.
Further, the filter hole is a circular step hole with a large outer end diameter and a small inner end diameter, the peripheral wall of the filter core is matched with the filter hole, and the outer end face of the filter core is flush with the outer peripheral wall of the outer cylinder.
Further, the water inlet hole and the water outlet hole are consistent with the diameter of the inner end of the filter element.
Further, the upper end of the inner cylinder is lower than the upper end of the outer cylinder and higher than the top end of the uppermost filtering hole on the outer cylinder.
Further, when the clamping column is contacted with the right end of the clamping groove, the water passing hole is positioned at the rear end of the inner cylinder, the central axis of the water passing hole is perpendicular to the central axis of the filter element, and when the clamping column is contacted with the left end of the clamping groove, the water passing hole is positioned at the left end of the inner cylinder and is coaxially opposite to the filter element.
Further, when the outer end of the inclined through hole is aligned with the filter element, the clamping column is positioned in the middle of the clamping groove, and the outer end of the inclined through hole surrounds the inner end of the filter element.
Further, the longitudinal section area of the connecting groove is larger than or equal to the horizontal section area of the water outlet hole.
Further, a water level full-automatic controller is arranged in the middle of the third vertical rod and is connected with the water pump and controls the water pump to be turned on and off.
Further, a one-way valve which is detachably connected is arranged in the water inlet hole.
Further, the diameter of the transverse rod is matched with the caliber of the bottom end of the U-shaped groove.
Through the technical scheme, the invention has the beneficial effects that:
the sampler comprises a plurality of sampling bottles which are sequentially connected from top to bottom, and can obtain water of an aquifer with a designated depth.
The inner cylinder and the outer cylinder are matched to seal the filtering holes of the outer cylinder, so that water in the water-bearing layer does not permeate into the inner cylinder when not sampling, but is stored in the corresponding water-bearing layer.
The inner cylinder is provided with the inclined through hole and the water outlet hole, and residual water in the filter core can be discharged before sampling, so that all the taken samples are fresh groundwater in the appointed aquifer, and the detection value is more accurate and representative.
The sampler provided by the invention is provided with the water pump, so that residual water can be pumped away in the sampling process, and the sampling operation is not influenced.
Drawings
Fig. 1 is a schematic view of a structure of a filter cartridge of the present invention;
FIG. 2 is a schematic structural view of the outer tub of the present invention;
FIG. 3 is a top view of the outer barrel of the present invention;
FIG. 4 is a schematic structural view of the inner barrel of the present invention;
FIG. 5 is a top view of the inner barrel of the present invention;
FIG. 6 is a cross-sectional view taken along A-A of FIG. 5;
fig. 7 is an enlarged view of a portion B of fig. 6;
FIG. 8 is a schematic diagram of the structure of the sampler of the present invention;
FIG. 9 is a schematic view of the structure of the sampling bottle of the present invention;
FIG. 10 is a front view of the sample bottle of the present invention;
fig. 11 is a front cross-sectional view of the present invention.
The reference numerals in the drawings are: 1 is an outer cylinder, 2 is an inner cylinder, 3 is a positioning rod, 4 is a sampling bottle, 5 is a water pump, 11 is a filtering hole, 12 is a filtering core, 13 is a clamping groove, 14 is a cover, 21 is a U-shaped groove, 22 is a water passing hole, 23 is a water discharging hole, 24 is an inclined through hole, 25 is a clamping column, 26 is a connecting groove, 27 is a positioning groove, 31 is a cross rod, 32 is a first vertical rod, 33 is a first rod sleeve, 41 is a bottle body, 42 is a second vertical rod, 43 is a second rod sleeve, 44 is a water inlet, 45 is a communicating pipe, 46 is a through groove, 47 is a positioning column, 51 is a third vertical rod, and 52 is a full-automatic water level controller.
Detailed Description
The invention is further described with reference to the drawings and detailed description which follow:
it should be noted that, in the following description, terms such as "front", "rear", "left", "right", "upper", "lower", "bottom" and "top" refer to directions in the drawings, and terms such as "inner" and "outer" refer to directions toward or away from a geometric center of a specific component, respectively.
As shown in fig. 1 to 11, a groundwater quality monitoring and sampling device comprises a filter cartridge and a sampler;
the filter cartridge comprises an outer cylinder 1 and an inner cylinder 2, wherein the outer cylinder 1 is a cylinder body with an opening at the upper end, a plurality of filter holes 11 penetrating through the inner peripheral wall and the outer peripheral wall of the outer cylinder 1 are formed in the left side wall of the outer cylinder 1 at intervals along the height direction of the outer cylinder 1, a filter element 12 is arranged in the filter holes 11, a clamping groove 13 is formed in the inner peripheral wall of the right part of the rear side of the central axis of the outer cylinder 1, the clamping groove 13 is an arc-shaped groove body which protrudes outwards along the inner wall of the outer cylinder 1 and has an inward opening, the lower end of the clamping groove 13 is flush with the inner bottom surface of the outer cylinder 1, the upper end of the clamping groove 13 penetrates through the upper end of the outer cylinder 1, the outer cylinder 1 is buried underground, the upper end of the outer cylinder 1 is exposed out of the ground, and a cover 14 capable of sealing the opening at the upper end of the outer cylinder 1 is hinged at the upper end;
the inner cylinder 2 is penetrated and arranged in the outer cylinder 1, the inner cylinder 2 is a tubular body with openings at the upper end and the lower end, the upper ends of the left side and the right side of the inner cylinder 2 are downwards provided with U-shaped grooves 21 which are upwards opened and penetrate through the peripheral wall of the inner cylinder 2, the U-shaped grooves 21 at the left side and the right side of the inner cylinder 2 are mutually symmetrically communicated, the lower end of the inner cylinder 2 is contacted with the inner bottom surface of the outer cylinder 1, the outer peripheral wall of the inner cylinder 2 is in gapless sliding contact with the inner peripheral wall of the outer cylinder 1, a plurality of water passing holes 22 which correspond to the filtering holes 11 and penetrate through the inner peripheral wall of the inner cylinder 2 are arranged on the peripheral wall of the inner cylinder 2, the top surface of the left side front part of the central axis of the inner cylinder 2 is provided with a water outlet 23 which penetrates through the upper end and the lower end surface of the inner cylinder 2, the direction of the water outlet 23 close to the central axis of the inner cylinder 2 is the inner side, a plurality of square inclined through holes 24 are formed in the outer peripheral wall of the left front part of the central axis of the inner cylinder 2 at intervals along the height direction of the inner cylinder 2, the inclined through holes 24 incline upwards from inside to outside, the centers of the outer ends of the inclined through holes 24 are horizontally aligned with the centers of the filter holes 11 on the outer cylinder 1 one by one, the inner end of each inclined through hole 24 is communicated with a drain hole 23, the lower end of the inner cylinder 2 is upwards provided with a connecting groove 26 with a downward opening, the connecting groove 26 is communicated with the inner cylinder 2 and the drain hole 23, the outer peripheral wall of the inner cylinder 2 is provided with a clamping column 25 which is arranged in the clamping groove 13 along the height direction of the inner cylinder 2, the clamping column 25 is a sector-shaped cylinder with a small inside and a large outside, the front side and the rear side of the inner peripheral wall of the inner cylinder 2 are respectively provided with a strip-shaped positioning groove 27 along the height direction of the inner cylinder 2, and the positioning groove 27 penetrates through the upper end face and the lower end face of the inner cylinder 2;
the sampler comprises a positioning rod 3, a plurality of sampling bottles 4 and a water pump 5, wherein the positioning rod 3 comprises a cross rod 31 and a first vertical rod 32, the top end of the first vertical rod 32 is connected with the lower side of the middle part of the cross rod 31 to form a T-shaped rod body, the lower end of the first vertical rod 32 is provided with a first rod sleeve 33, the first rod sleeve 33 is a cylindrical body with an open lower end, the inner diameter of the first rod sleeve 33 corresponds to the outer diameter of the first vertical rod 32, the first rod sleeve 33 is provided with a pin hole penetrating through the peripheral wall of the first rod sleeve 33 from front to back, the sampling bottle 4 comprises a bottle body 41 and a second vertical rod 42, the second vertical rod 42 is a vertical rod body with the same diameter as the first vertical rod 32, the upper end of the second vertical rod 42 is provided with a positioning hole penetrating through the second vertical rod 42 from front to back, the positioning hole is consistent with the pin hole diameter, the inner peripheral wall of the positioning hole is provided with an inner thread, the lower end of the second vertical rod 42 is coaxially connected with the bottle body 41, the bottle body 41 is a hollow cylinder, the front part and the rear part of the peripheral wall of the bottle body 41 are both provided with positioning columns 47 which are matched with the positioning grooves 27 on the inner cylinder 2, the left end of the peripheral wall of the bottle body 41 is provided with water inlet holes 44 which are communicated with the inside and the outside of the bottle body 41, the right part of the upper surface of the bottle body 41 is provided with a communicating pipe 45 which penetrates through the inside and the outside of the bottle body 41, the upper end of the communicating pipe 45 is provided with a polytetrafluoroethylene microporous membrane, the peripheral wall of the bottle body 41 at the front side of the communicating pipe 45 is provided with a through groove 46 which is recessed towards the inside of the bottle body 41 and is outwards, the through groove 46 is a square groove, the upper end and the lower end of the through groove 46 respectively penetrate through the upper end and the lower end of the bottle body 41, the lower end of the bottle body 41 is coaxially provided with a second rod sleeve 43, the shape and the size of the second rod sleeve 43 are consistent with the first rod sleeve 33, the plurality of sampling bottles 4 are coaxially connected from top to bottom in sequence, the water inlet holes 44 of the sampling bottles 4 face consistently, the upper ends of the second vertical rods 42 of the sampling bottles 4 positioned below in every two adjacent sampling bottles 4 extend into the second rod sleeve 43 of the sampling bottle 4 positioned above and are connected through the bolt positioning of the screw-in positioning hole, the second vertical rod 42 of the uppermost sampling bottle 4 extends into the first rod sleeve 33 of the positioning rod 3 and is connected through the bolt positioning of the screw-in positioning hole, a water pump 5 is arranged below the lowermost sampling bottle 4, the upper end of the water pump 5 is connected with a third vertical rod 51, the shapes and the sizes of the third vertical rod 51 and the second vertical rod 42 are consistent, the upper end of the third vertical rod 51 extends into the second rod sleeve 43 of the sampling bottle 4 positioned below and is connected through the bolt positioning of the screw-in positioning hole, and a cable of the water pump 5 and a water outlet pipe are positioned in the through grooves 46 of the sampling bottles 4;
when the sampler is placed in the filter cartridge, the outer peripheral wall of the bottle body 41 of the sampling bottle 4 is in gapless sliding contact with the inner peripheral wall of the inner barrel 2, two ends of the cross rod 31 of the positioning rod 3 are placed in the U-shaped groove 21 of the inner barrel 2, the water inlet holes 44 of a plurality of sampling bottles 4 are coaxially opposite to the water outlet holes 22 of the inner barrel 2 one by one, the outer ends of the water inlet holes 44 are in contact with the inner ends of the water outlet holes 22, and a space is reserved between the lower end of the water pump 5 and the inner bottom surface of the outer barrel 1.
The filter hole 11 is a circular step hole with a large outer end diameter and a small inner end diameter, the peripheral wall of the filter core 12 is matched with the filter hole 11, and the outer end surface of the filter core 12 is flush with the outer peripheral wall of the outer cylinder 1.
The water inlet holes 44 and the water outlet holes 22 are consistent with the diameter of the inner end of the filter core 12.
The upper end of the inner cylinder 2 is lower than the upper end of the outer cylinder 1 and higher than the top end of the uppermost filtering hole 11 on the outer cylinder 1.
When the clamping column 25 is contacted with the right end of the clamping groove 13, the water passing hole 22 is positioned at the rear end of the inner cylinder 2, the central axis of the water passing hole 22 is perpendicular to the central axis of the filter core 12, and when the clamping column 25 is contacted with the left end of the clamping groove 13, the water passing hole 22 is positioned at the left end of the inner cylinder 2, and the water passing hole 22 is coaxially opposite to the filter core 12.
When the outer end of the inclined through hole 24 is aligned with the filter element 12, the clamping column 25 is positioned in the middle of the clamping groove 13, and the outer end of the inclined through hole 24 surrounds the inner end of the filter element 12.
The longitudinal cross-sectional area of the connecting groove 26 is equal to or larger than the horizontal cross-sectional area of the drain hole 23.
The middle part of the third vertical rod 51 is provided with a full-automatic water level controller 52, the full-automatic water level controller 52 adopts a DF-96B water pump full-automatic water level controller, and the full-automatic water level controller 52 is connected with the water pump 5 and controls the water pump to be turned on and turned off.
A detachable one-way valve is arranged in the water inlet hole 44, and the one-way valve adopts a CR-045 type external thread water inlet check valve.
The diameter of the cross bar 31 is matched with the caliber of the bottom end of the U-shaped groove 21.
The diameter of the cross bar 31 corresponds to the diameter of the bottom end of the U-shaped groove 21.
Before the underground water quality monitoring and sampling device is used, an observation hole is required to be drilled on the ground of a designated aquifer, the diameter of the observation hole is matched with that of the outer cylinder of the underground water quality monitoring and sampling device, and then the underground water quality monitoring and sampling device is placed into the observation hole, so that the wall of the outer cylinder of the underground water quality monitoring and sampling device is attached to the wall of the observation hole. Namely: the outer cylinder wall seals the water outlet part of the aquifer on the observation hole wall, only the filtering holes corresponding to the aquifer with the designated depth are reserved, and the water of the aquifer with the designated depth is oozed. Then, the inner cylinder is rotated by 90 degrees until the central axis of the water passing hole is vertical to the central axis of the filtering hole, water in the designated water containing layer is prevented from entering the inner cylinder, the cover body is closed, and the cover body is kept stand for a period of time (such as three days or one week), so that the water turbulence state of the underground water containing layer caused by the observation hole is gradually reduced along with the flow of water in each water containing layer, and the water near the outer cylinder is updated along with the flow of water in the water containing layer.
When in use, the cover 14 is firstly opened, the combined sampler is put into the inner cylinder 2 until the two ends of the cross rod 31 of the positioning rod 3 are placed in the U-shaped groove 21 of the inner cylinder 2, the two hands respectively grasp the positions of the cross rod 31 close to the two ends and apply reverse force to enable the inner cylinder 2 to rotate anticlockwise until the outer ends of the inclined through holes 24 are opposite to the filter holes 11, at the moment, residual water in the filter holes 11 and the filter core 12 enters the lower water hole 23 through the inclined through holes 24 and enters the inner cylinder 2 through the connecting groove 26 at the bottom of the inner cylinder 2, if the water surface is raised due to excessive residual water at the lower part of the inner cylinder 2, the water pump 5 is started to pump out excessive residual water, the sampling operation is prevented from being influenced by excessive residual water, after a period of time (such as 30 seconds or 2 minutes), the residual water in the filter holes 11 and the filter core 12 is considered to be discharged, the inner cylinder 2 is rotated again, the water passing hole 22 of the inner cylinder 2 is opposite to the filtering hole 11, at this time, water in the water containing layer is filtered by the filter element 12 and then enters the sampling bottle 4 through the water passing hole 22 and the water inlet hole 44, because the water inlet hole 44 is internally provided with the one-way valve, the bottle body 41 of the sampling bottle 4 is provided with the communicating pipe 45 with the polytetrafluoroethylene microporous membrane, the polytetrafluoroethylene microporous membrane is breathable and waterproof, so that the water in the water containing layer cannot come out after entering the sampling bottle 4 until the water in the sampling bottle 4 is filled and the pressure in the bottle is consistent with the water pressure in the water containing layer, a period of time (such as 20 minutes or half an hour) is waited for, all the water in the sampling bottle 4 can be considered to be filled, both hands respectively grasp the two ends of the cross rod 31 near the two ends, and apply reverse force, the inner cylinder 2 is rotated clockwise until the clamping column 25 contacts the right end of the clamping groove 13, at this time, the water passing hole 22 is positioned at the rear end of the inner cylinder 2, the inclined through hole 24 rotates to the rear side of the filtering hole 11, the inner cylinder 2 seals the filtering hole 11 on the outer cylinder 1 again, water in the water-containing layer is prevented from seeping outwards, the positioning rod 3 is pulled upwards to take out the sampler, the one-way valve on the sampling bottle 4 is taken down, the water in the sampling bottle 4 is transferred into the storage device, a depth mark is made for detection, and finally the cover body is sealed, so that impurities in the filter cylinder are prevented from entering.
The sampler of the invention comprises a plurality of sampling bottles 4 which are sequentially connected from top to bottom, and can obtain water of aquifers with different depths.
The inner cylinder 2 and the outer cylinder 1 of the invention are matched to seal the filtering holes 11 of the outer cylinder 1, so that water in the water-bearing layer does not permeate into the inner cylinder 2 when not sampling, but remains in the corresponding water-bearing layer.
The inner cylinder 2 is provided with the inclined through hole 24 and the water drain hole 23, and residual water in the filter core 12 can be discharged before sampling, so that the taken sample is water in an aquifer, and the detection value is more accurate and representative.
The sampler provided by the invention is provided with the water pump 5, so that residual water can be pumped away in the sampling process, and the sampling operation is not influenced.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above examples, and various modifications can be made to the technical solution of the present invention without departing from the spirit of the present invention, i.e., the scope of the disclosure.
Claims (10)
1. The underground water quality monitoring and sampling device is characterized by comprising a filter cartridge and a sampler;
the filter cartridge comprises an outer cylinder (1) and an inner cylinder (2), wherein the outer cylinder (1) is a cylindrical body with an opening at the upper end, a plurality of filter holes (11) penetrating through the inner peripheral wall and the outer peripheral wall of the outer cylinder (1) are formed in the left side wall of the outer cylinder (1) at intervals along the height direction of the outer cylinder (1), a filter element (12) is arranged in the filter holes (11), a clamping groove (13) is formed in the inner peripheral wall of the right part of the rear side of the central axis of the outer cylinder (1), the clamping groove (13) is an arc-shaped groove body which protrudes outwards and opens inwards along the inner wall of the outer cylinder (1), the lower end of the clamping groove (13) is flush with the inner bottom surface of the outer cylinder (1), the upper end of the clamping groove (13) penetrates through the upper end of the outer cylinder (1), the outer cylinder (1) is buried underground, the upper end of the outer cylinder (1) is exposed out of the ground, and a cover body (14) capable of sealing the opening at the upper end of the outer cylinder (1) is hinged;
the inner cylinder (2) is penetrated and arranged in the outer cylinder (1), the inner cylinder (2) is a tubular body with openings at the upper end and the lower end, the upper ends of the left side and the right side of the inner cylinder (2) are downwards provided with U-shaped grooves (21) penetrating the peripheral wall of the inner cylinder (2) and with openings upwards, the U-shaped grooves (21) at the left side and the right side of the inner cylinder (2) are mutually symmetrically communicated, the lower end of the inner cylinder (2) is contacted with the inner bottom surface of the outer cylinder (1), the outer peripheral wall of the inner cylinder (2) is in gapless sliding contact with the inner peripheral wall of the outer cylinder (1), a plurality of water through holes (22) which correspond to the filtering holes (11) and penetrate the inner peripheral wall of the inner cylinder (2), the top surface of the central axis left side front part of the inner cylinder (2) is provided with a lower water through hole (23) penetrating the upper end and the lower end of the inner cylinder (2), the direction of the lower water through hole (23) is inwards, the direction close to the central axis of the inner cylinder (2) is outwards, the direction close to the outer wall of the inner cylinder (2) is outwards, the outer peripheral wall of the inner cylinder (2) is outwards, a plurality of inclined through holes (24) are arranged on the inner peripheral wall of the inner cylinder (2) along the height direction of the inner cylinder (2) at intervals, the inner peripheral wall of the inner cylinder (1) and the inner wall is inclined through holes (24) and the inclined through holes (24) from the inner side to the horizontal through hole (24) to the upper end of the horizontal through hole (24), the lower end of the inner cylinder (2) is upwards provided with a connecting groove (26) with a downward opening, the connecting groove (26) is communicated with the inside of the inner cylinder (2) and the lower water hole (23), the peripheral wall of the inner cylinder (2) is provided with a clamping column (25) which is arranged in the clamping groove (13) along the height direction of the inner cylinder (2), the clamping column (25) is a circular column body with a small inside and a large outside, the front side and the rear side of the inner peripheral wall of the inner cylinder (2) are both provided with strip-shaped positioning grooves (27) along the height direction of the inner cylinder (2), and the positioning grooves (27) penetrate through the upper end face and the lower end face of the inner cylinder (2);
the sampler comprises a positioning rod (3), a plurality of sampling bottles (4) and a water pump (5), the positioning rod (3) comprises a cross rod (31) and a first vertical rod (32), the top of the first vertical rod (32) is connected with the lower side of the middle part of the cross rod (31) to form a T-shaped rod body, the lower end of the first vertical rod (32) is provided with a first rod sleeve (33), the first rod sleeve (33) is a cylindrical body with an open lower end, the inner diameter of the first rod sleeve (33) is matched with the outer diameter of the first vertical rod (32), the first rod sleeve (33) is provided with a pin hole penetrating through the peripheral wall of the first rod sleeve (33) front and back, the sampling bottle (4) comprises a bottle body (41) and a second vertical rod (42), the second vertical rod (42) is a vertical rod body with the same diameter as the first vertical rod (32), the upper end of the second vertical rod (42) is provided with a positioning hole penetrating through the second vertical rod (42) front and back, the positioning hole is consistent with the diameter of the pin hole, the inner peripheral wall of the positioning hole is provided with an inner peripheral wall of the inner cylinder (33), the inner peripheral wall of the positioning hole is provided with a hollow bottle (41) and the inner cylinder (41) is provided with a hollow bottle body (41) and the inner cylinder (41) and the outer cylinder (41) is provided with a hollow bottle (41) and the inner cylinder (41) and the inner wall (41), the right part of the upper surface of the bottle body (41) is provided with a communicating pipe (45) penetrating the inside and the outside of the bottle body (41), the upper end of the communicating pipe (45) is provided with a polytetrafluoroethylene microporous membrane, the circumferential wall of the bottle body (41) at the front side of the communicating pipe (45) is provided with a through groove (46) which is outwards recessed from the inside of the bottle body (41), the upper end and the lower end of the through groove (46) respectively penetrate the upper end and the lower end of the bottle body (41), the lower end of the bottle body (41) is coaxially provided with a second rod sleeve (43), the shape and the size of the second rod sleeve (43) are consistent with those of the first rod sleeve (33), the sampling bottles (4) are coaxially connected from top to bottom in sequence, the water inlet holes (44) of the sampling bottles (4) are consistent in orientation, the upper ends of the second vertical rods (42) of the sampling bottles (4) positioned below every two adjacent sampling bottles (4) extend into the second rod sleeve (43) positioned above and are rotatably connected with the first rod sleeve (5) through the positioning bolt (5) positioned at the top of the top rod sleeve (33), the shapes and the sizes of the third vertical rod (51) and the second vertical rod (42) are consistent, the upper end of the third vertical rod (51) stretches into the second rod sleeve (43) of the lowest sampling bottle (4) and is in positioning connection through bolts screwed into positioning holes, and a cable and a water outlet pipe of the water pump (5) are positioned in through grooves (46) of the sampling bottles (4);
when the sampler is arranged in the filter cylinder, the outer peripheral wall of a bottle body (41) of the sampling bottle (4) is in gapless sliding contact with the inner peripheral wall of the inner cylinder (2), two ends of a cross rod (31) of the positioning rod (3) are arranged in a U-shaped groove (21) of the inner cylinder (2), water inlets (44) of a plurality of sampling bottles (4) are coaxially opposite to water inlets (22) of the inner cylinder (2), the outer ends of the water inlets (44) are in contact with the inner ends of the water inlets (22), and a space is reserved between the lower end of the water pump (5) and the inner bottom surface of the outer cylinder (1).
2. The underground water quality monitoring and sampling device according to claim 1, wherein the filtering holes (11) are circular stepped holes with large outer end diameter and small inner end diameter, the peripheral wall of the filtering core (12) is matched with the filtering holes (11), and the outer end face of the filtering core (12) is flush with the outer peripheral wall of the outer cylinder (1).
3. The groundwater quality monitoring sampling device according to claim 1, wherein the water inlet (44) and the water outlet (22) are both in accordance with the diameter of the inner end of the filter core (12).
4. The underground water quality monitoring and sampling device according to claim 1, wherein the upper end of the inner cylinder (2) is lower than the upper end of the outer cylinder (1) and higher than the top end of the uppermost filtering hole (11) on the outer cylinder (1).
5. The underground water quality monitoring and sampling device according to claim 1, wherein when the clamping column (25) is in contact with the right end of the clamping groove (13), the water passing hole (22) is positioned at the rear end of the inner barrel (2), the central axis of the water passing hole (22) is perpendicular to the central axis of the filter core (12), and when the clamping column (25) is in contact with the left end of the clamping groove (13), the water passing hole (22) is positioned at the left end of the inner barrel (2), and the water passing hole (22) is coaxially opposite to the filter core (12).
6. The underground water quality monitoring and sampling device according to claim 5, wherein the clamping column (25) is positioned in the middle of the clamping groove (13) when the outer end of the inclined through hole (24) is aligned with the filter element (12), and the outer end of the inclined through hole (24) surrounds the inner end of the filter element (12).
7. The groundwater quality monitoring and sampling device according to claim 1, wherein the longitudinal cross-sectional area of the connecting groove (26) is greater than or equal to the horizontal cross-sectional area of the sewer hole (23).
8. The underground water quality monitoring and sampling device according to claim 1, wherein a water level full-automatic controller (52) is arranged in the middle of the third vertical rod (51), and the water level full-automatic controller (52) is connected with the water pump (5) and controls the water pump to be turned on and off.
9. The groundwater quality monitoring and sampling device according to claim 1, wherein a detachable one-way valve is arranged in the water inlet hole (44).
10. The underground water quality monitoring and sampling device according to claim 1, wherein the diameter of the cross rod (31) is matched with the caliber of the bottom end of the U-shaped groove (21).
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| CN113532934A (en) * | 2021-08-26 | 2021-10-22 | 江苏全给净化科技有限公司 | Monitoring device for rural wisdom water utilities management |
| CN113967419B (en) * | 2021-09-27 | 2024-04-02 | 濮阳市万泉化工有限公司 | Static mixing device for producing sealant |
| CN114544224B (en) * | 2022-01-14 | 2024-06-04 | 重庆市生态环境科学研究院 | Soil sampling and soil gas sampling integrated device |
| CN115032034B (en) * | 2022-08-11 | 2023-11-28 | 南通俊朗智能科技有限公司 | Water source gradient sampling device of deep water riverbed |
| CN115683726B (en) * | 2022-11-09 | 2023-10-20 | 内蒙古金河套乳业有限公司 | Milk powder detects automatic sampling equipment |
| CN116699090A (en) * | 2023-06-16 | 2023-09-05 | 中国水产科学研究院珠江水产研究所 | Intelligent online water quality monitoring equipment for aquaculture pond |
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