CN109540594A - Water pollution monitoring sampler - Google Patents
Water pollution monitoring sampler Download PDFInfo
- Publication number
- CN109540594A CN109540594A CN201910041148.2A CN201910041148A CN109540594A CN 109540594 A CN109540594 A CN 109540594A CN 201910041148 A CN201910041148 A CN 201910041148A CN 109540594 A CN109540594 A CN 109540594A
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- CN
- China
- Prior art keywords
- water
- pollution monitoring
- sealing
- seal case
- monitoring sampler
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Classifications
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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
-
- 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
- G01N2001/1031—Sampling from special places
Abstract
The present invention provides a kind of water pollution monitoring samplers, belong to water quality monitoring technical field, the mechanism that snorkels, seal case, water container, water inlet, sealing tap, water injecting pump, fixed frame, elevating mechanism and box sealing door.Water pollution monitoring sampler provided by the invention, the water sample of the water layer can be accurately drawn after different depth can be entered, it will not be interfered with each other between different water samples, after the completion of completing sampling, the mechanism that snorkels rises to the water surface again and meets the water intaking operation of different water levels, and will not mutually interfere, guarantee the accurate of sampling, it is easy to operate, it is laborsaving, it improves work efficiency.
Description
Technical field
The invention belongs to water quality monitoring technical fields, are to be related to a kind of water pollution monitoring sampler more specifically.
Background technique
Due to the fast-growth of the algae in water, the factors such as accumulation of the algae on the water surface cause water flow difficult, water body with
Air can not carry out normal air circulation, and gradually stench is unpleasant, causes certain harm, Ye Lv to people's lives and health
Plain a is the major parameter of current aquatic environment monitoring, is measured to the chlorophyll content in water, so that it is determined that the nutrition of water body
Situation, during water quality sampling, in addition to being sampled to superficial water, it is also desirable to the water sample of different depth is extracted respectively, it is existing
Technology is to extract water sample with breaker, can not accurately measure depth in this way, and the operation is very troublesome, time-consuming and laborious, also hold
Easy pollution water sample again.
Summary of the invention
The purpose of the present invention is to provide a kind of water pollution monitoring samplers, it is intended to which solving existing water sample extraction cannot
Lift different depth, time-consuming and laborious problem.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of water pollution monitoring sampler is provided, wrap
It includes:
Snorkel mechanism, for entering the water layer of different depth；
Seal case is installed in described snorkel in mechanism；
Water container is arranged in the seal case, for storing water sample；
Water inlet is arranged on the top cover of box of the seal case, for being connected to the water container；
Sealing tap, for being mounted on the oral area of the water container, being used for and being connected in the water container；
Water injecting pump is connected between the sealing tap and water inlet, for saying the water inlet by sealing
Water nozzle injects in the water container；
Fixed frame is slidably matched with the seal case, for fixing the water container；
Elevating mechanism, for driving the sealing tap to go up and down, for the oral area installation and removal in the water container
The glide direction of the sealing tap, the direction of motion of the elevating mechanism and the fixed frame is vertically arranged；With
Box sealing door, for the fixed frame to be sealed in the seal case.
Further, the fixed frame includes:
Frame body is hollow structure, through the mounting hole being equipped with for installing the water container；
Snap-gauge is slidably disposed in the frame body, waist type via hole is equipped with, for being sleeved in the water container
Portion, and frame body cooperation grips the water container, the lifting of the glide direction of the snap-gauge and the elevating mechanism
Direction is vertically arranged；With
Elastic component, one end are connected on the frame body, and the other end is connected to the side of the snap-gauge, for providing clamping
Power.
Further, the upper surface and lower end surface of the frame body are equipped with attacker's slot.
Further, the two sides of the frame body are equipped with blade fin, and the inside of the seal case, which is equipped with, to be used for and institute
State the guide chute that blade fin is slidably matched.
Further, the groove that the outside of the snap-gauge is equipped with convenient for pressing.
Further, the elevating mechanism includes:
Guide post is fixed on the top cover of box；
Crane is slidably matched with the guide post, can slide up and down along the guide post, described for installing and fixing
Sealing tap；With
Screw rod is rotatably connected on the top cover of box and is threadedly engaged with the crane, for driving the lifting
Frame moves up and down.
Further, the sealing tap includes:
Sharp mouth is filled the water, for connecting the water injecting pump by water pipe；With
Flexible seal cover is located at the periphery for filling the water sharp mouth, for sealing the oral area of the water container.
Further, the inside border of the box sealing door is equipped with sealing joint strip, and the opening of the seal case is set
There is seal groove corresponding with the sealing joint strip.
Further, the mechanism that snorkels includes:
Shell is fixedly connected with the seal case；
The inside of the shell is arranged in air bag；
Air accumulator is connected to by solenoid valve with the air bag；
Propeller is arranged in the two sides of the shell, is used to provide power；With
Depth measurement sensor, for detecting the depth of dive.
Further, water pollution monitoring sampler further include:
Controller is connect with the solenoid valve, the propeller and the water injecting pump respectively；
Display screen is connect with the controller；
Guide rope, one end are fixed on the seal case, and are electrically connected the solenoid valve, the propeller and the note
Water pump；With
Take-up is connect with the other end of the guide rope, for winding guide rope.
The beneficial effect of water pollution monitoring sampler provided by the invention is: compared with prior art, water of the present invention
Pollution monitoring sampler, water container is put into seal case, and sealing tap is mounted on water by elevating mechanism and is held
The oral area of device is realized sealing connection, is entered in water by snorkeling mechanism with seal case, is sealed environment in seal case,
Different depth is dropped to after placing water container, water injecting pump is entered in water container by the water in the water inlet inspiration external world,
Since sealing tap and water container are tightly connected, so will not be in spilling water to seal case, and after entering different depth
The water sample of the water layer can be accurately drawn, will not be interfered with each other between different water samples, after the completion of completing sampling, floating-diving apparatus
Structure rises to the water surface again and meets the water intaking operation of different water levels, and will not mutually interfere, and guarantees the accurate of sampling, operation letter
It is single, it is laborsaving, it improves work efficiency.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram for the water pollution monitoring sampler that the embodiment of the present invention 1 provides；
Fig. 2 is that the structural representation of box sealing behind the door is set in water pollution monitoring provided in an embodiment of the present invention sampling dress removal
Figure；
Fig. 3 is schematic diagram of main cross-sectional structure of Fig. 2；
Fig. 4 is the schematic diagram of internal structure of seal case；
Fig. 5 is the overlooking structure diagram of seal case；
Fig. 6 is sectional structure chart of the Fig. 5 along line A-A；
Fig. 7 is the structural schematic diagram for the water pollution monitoring sampler that the embodiment of the present invention 2 provides.
In figure: 1, snorkel mechanism；11, shell；111, air accumulator；112, air bag；12, propeller；13., empennage；2, it seals
Cabinet；21, top cover of box；211, water inlet；212, handwheel is driven；213, water injecting pump；22, box sealing door；23, fixed frame；
231, frame body；2311, attacker's slot；232, snap-gauge；233, blade fin；234, elastic component；24, seal groove；25, sealing tap；
251, flexible seal cover；252, sharp mouth is filled the water；26, elevating mechanism；261, crane；262, guide post；263, screw rod；264, water
Pipe；265, check valve；3, water container；4, guide rope；41, connector；5, support frame；51, traveling wheel；52, take-up pulley；53, spine
Wheel；54, swing rod；55, directive wheel.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Also referring to Fig. 1 and Fig. 2, now water pollution monitoring sampler provided by the invention is illustrated.The water
Pollution monitoring sampler, comprising: the mechanism that snorkels 1, seal case 2, water container 3, water inlet 211, sealing tap 25, water filling
Pump 213, fixed frame 23, elevating mechanism 26 and box sealing door 22.
The mechanism that snorkels 1 is used for the water layer into different depth；Seal case 2, which is installed in, to snorkel in mechanism 1；Water container 3,
It is arranged in seal case 2, for storing water sample；Water inlet 211 is arranged on the top cover of box 21 of seal case 2, for and
Water container 3 is connected to；Sealing tap 25 is used to be mounted on the oral area of water container 3, is used for and is connected in water container 3；Water filling
Pump 213 is connected between sealing tap 25 and water inlet 211, for injecting saying at water inlet 211 by sealing tap 25
In water container 3.Fixed frame 23 is slidably matched with seal case 2, for fixing water container 3；Elevating mechanism 26 is for driving
Sealing tap 25 is gone up and down, and mounts and dismounts sealing tap 25, the direction of motion of elevating mechanism 26 for the oral area in water container 3
It is vertically arranged with the glide direction of fixed frame 23；Box sealing door 22 is for fixed frame 23 to be sealed in seal case 2.
Water container 3 is put into seal case compared with prior art by water pollution monitoring sampler provided by the invention
In 2, sealing tap 25 is mounted on to the oral area of water container 3 by elevating mechanism 26, realizes sealing connection, pass through the mechanism that snorkels
1 enters in water with seal case 2, is sealed environment in seal case 2, drops to different depth after placing water container 3,
Water injecting pump 213 is entered in water container 3 by the water in 211 inspiration of the water inlet external world, due to sealing tap 25 and water container 3
It is tightly connected, so the water of the water layer can will not accurately be drawn in spilling water to seal case 2, and after the different depth of entrance
Sample will not interfere with each other between different water samples, and after the completion of completing sampling, the mechanism that snorkels 1 rises to the water surface again and meets
The water intaking of different water levels operates, and will not mutually interfere, and guarantees the accurate of sampling, easy to operate, laborsaving, improves work effect
Rate.
In the present embodiment, multiple water containers 3 can be placed in seal case 2, and multiple water inlets 211 are set therewith
Corresponding, each water container 3 corresponds to a water injecting pump 213, can start corresponding water injecting pump 213 in different water layers,
To obtain the water sample of different water levels.
As a kind of specific embodiment of water pollution monitoring sampler provided by the invention, please see Fig. 2 to Fig. 4 and
Fig. 6, fixed frame 23 include: frame body 231, snap-gauge 232 and elastic component 234；Frame body 231 is hollow structure, through equipped with for pacifying
Fill the mounting hole of water container 3；Snap-gauge 232 is slidably disposed in frame body 231, is equipped with waist type via hole, is deposited for being sleeved on
The middle part of water container 3, and the cooperation of frame body 231 grips water container 3, the glide direction of snap-gauge 232 and elevating mechanism 26
Lifting direction is vertically arranged；234 one end of elastic component is connected on frame body 231, and the other end is connected to the side of snap-gauge 232, is used for
Chucking power is provided.Water intaking container is fixedly clamped on snap-gauge 232 and frame body 231, pick-and-place is facilitated.Elastic component 234 can be bullet
Spring or rubber.
As a kind of specific embodiment of water pollution monitoring sampler provided by the invention, referring to Fig. 4, frame body
231 upper surface and lower end surface are equipped with attacker's slot 2311.Setting attacker's slot 2311 facilitates frame body 231 out of seal case 2
Extraction.
As a kind of specific embodiment of water pollution monitoring sampler provided by the invention, please see Fig. 2 to Fig. 4,
The two sides of frame body 231 are equipped with blade fin 233, the inside of seal case 2 be equipped with for and blade fin 233 be slidably matched
Guide chute.Setting blade fin 233 can not only be oriented to frame body 231, but also can reduce coefficient of friction, match with guide chute
Conjunction more can guarantee the stability of guiding and the stability of connection.Then blade fin 233 can be fixed by screws in by outsourcing
On frame body 231.The settable guiding fillet in the end of blade fin 233, is easily installed.
As a kind of specific embodiment of water pollution monitoring sampler provided by the invention, please see Fig. 2 to Fig. 4,
The groove that the outside of snap-gauge 232 is equipped with convenient for pressing.The upper and lower of frame body 231 is spaced plate, has mounting hole on plate,
Snap-gauge 232 is arranged between two plates, resists the middle part of water container 3 under the effect of spring force, and setting groove can be with
It is convenient to compress snap-gauge 232 during installation, keep the waist type via hole on snap-gauge 232 corresponding with mounting hole, water container 3 could be installed
It is easy to use in fixed frame 23.Optionally, the rubber layer of antiskid, shock-absorbing is set in inner wall of the hole installing, in the inner wall of waist-shaped hole
Upper setting coefficient of friction and elastic bigger layer of silica gel.
As a kind of specific embodiment of water pollution monitoring sampler provided by the invention, referring to Fig. 6, sealing water
Mouth 25 includes: to fill the water sharp mouth 252 and flexible seal cover 251；Sharp mouth 252 is filled the water to be used to connect water injecting pump 213 by water pipe 264；
Flexible seal cover 251 is located at the periphery for filling the water sharp mouth 252, for sealing the oral area of water container 3.The oral area of water container 3
Settable rubber stopper, the sharp mouth 252 of water filling can puncture rubber stopper and fill the water into water container 3, ensure that sampling water will not be contaminated,
Sealing effect is good, and it is more accurate to detect.Optionally, the inside of water pipe 264 is additionally provided with check valve 265, prevents sampling water from leaking outside.
As a kind of specific embodiment of water pollution monitoring sampler provided by the invention, Fig. 3 to Fig. 4 is please referred to,
Elevating mechanism 26 includes: guide post 262, crane 261 and screw rod 263；Guide post 262 is fixed on top cover of box 21；
Crane 261 is slidably matched with guide post 262, can slide up and down along guide post 262, for installing and fixing seal water nozzle 25；
Screw rod 263 is rotatably connected on top cover of box 21 and is threadedly engaged with crane 261, for driving crane 261 to move up and down.
Rotary screw rod 263 can drive crane 261 to move up and down, and before installing water container 3, crane 261 is risen to suitably
Position, after the installation of fixed frame 23 to predeterminated position, rotary screw rod 263 drives crane 261 to decline, then flexible seal cover 251
It can be sleeved on the oral area of water container 3, while filling the water sharp mouth 252 to puncture rubber stopper or serum cap, the inside with water container 3
Connection, when fetched, the notch that rubber stopper self-enclosed can puncture ensure that the accurate of sampling, and water container 3 is also settable
It is made at black, or of opaque material, prevents the irradiation of light from having an impact to water sample, this programme has completely cut off external natural item
The interference of part ensure that the accuracy of inspection.Moreover, relatively reliable using machine driving, it is ensured that the stability used.
Optionally, the outer end of screw rod 263 is also fixed with driving handwheel 212, and driving handwheel 212 is detachably connected by nut
It connecing in the outer end of screw rod 263, screw rod 263 can be mounted on top cover of box 21 by bearing, and bearing is embedded on top cover of box 21,
Outside connects sealing cover by screw.
As a kind of specific embodiment of water pollution monitoring sampler provided by the invention, referring to Fig. 1, cabinet is close
The inside border of closure door 22 is equipped with sealing joint strip, and the opening of seal case 2 is equipped with seal groove 24 corresponding with sealing joint strip.Case
Body hermatic door 22 can be hinged with seal case 2, is realized and is fixed by door lock, can also open up window on box sealing door 22, sees
Situation inside surveying.
As a kind of specific embodiment of water pollution monitoring sampler provided by the invention, Fig. 1 and Fig. 3 is please referred to,
The mechanism that snorkels 1 includes: shell 11, air bag 112, air accumulator 111, propeller 12 and depth measurement sensor；Shell 11 and sealing
Cabinet 2 is fixedly connected；The inside of shell 11 is arranged in air bag 112；Air accumulator 111 is connected to by solenoid valve with air bag 112；It promotes
The two sides of shell 11 are arranged in device 12, are used to provide power；Depth measurement sensor, for detecting the depth of dive.By setting
Air bag 112 and air accumulator 111 are set, after the gas paddle air bag 112 of air accumulator 111 is blown afloat, the water in shell 11 can be expressed into
Outside mitigates weight, and the water container 3 that can assist being loaded with sampling water rises, such propeller 12 it is more efficient, conducive to mentioning
High working efficiency.Also rotatable empennage 13 can be set in the rear end for the mechanism 1 that snorkels.
Propeller 12 is electric propeller, and settable four two sides in shell 11, electric propeller and shell 11 are to turn
Dynamic connection, can be by automatically controlled change angle, such as becomes horizontally or vertically, shell 11 to be pushed to be moved, and changing angle can
To be realized by motor, such as the setting fine tuning motor inside shell 11, the output shaft of motor and the side of electric propeller connect
It connects, as long as ensure that the shaft of motor is vertical with the shaft of electric propeller.
As a kind of specific embodiment of water pollution monitoring sampler provided by the invention, referring to Fig. 7, water pollution
Monitor sampler further include: controller, display screen, guide rope 4 and take-up；Controller respectively with solenoid valve, propeller
12 and water injecting pump 213 connect；Display screen is connect with controller；4 one end of guide rope is fixed on seal case 2, and is electrically connected electricity
Magnet valve, propeller 12 and water injecting pump 213；Take-up is connect with the other end of guide rope 4, for winding guide rope 4.
Display screen, controller may be provided at the water surface or more, monitor convenient for operator to underwater information, but also can be with
In the front end of shell 11, night vision cam is set, it is convenient that underwater time of day is observed, it is underwater electric appliance using guide rope 4
Element is powered, and not only can guarantee the stabilization of electricity consumption, but also can control by wire signal underwater electric elements, moreover it is possible to
It is used as rope, guarantee snorkels mechanism 1 and seal case 2 will not be lost, and improves the stability of field work.
In one embodiment, take-up includes support frame 5, traveling wheel 51, take-up pulley 52, swing rod 54,53 and of ratchet
Directive wheel 55；The lower end of support frame 5 is arranged in traveling wheel 51, easy to carry, guarantees the mobility strong of support frame 5；Take-up pulley 52
The upper end of support frame 5 is set, for storing to guide rope 4, connector 41 can be also reserved on take-up pulley 52, with power supply,
The external connection electrical apparatus such as display screen and controller are attached；Ratchet 53 is fixed at the lower part of support frame 5, and cuts with scissors with swing rod 54
It connects, swing rod 54 is equipped with pawl, cooperates with 53 guided rotation of ratchet, guarantees that swing rod 54 can only carry out on the direction being flipped up
Rotation needs to stir pawl and ratchet 53 when rotating down and is detached from, and can realize matching for pawl and ratchet 53 by spring herein
It closes；The end of swing rod 54 is also provided with directive wheel 55, for being oriented to guide rope 4, such as when on bank or ship, side
Just it visits to stretch and carries out retractable cable operation at a distance, guide rope 4 will not be worn.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. water pollution monitoring sampler characterized by comprising
Snorkel mechanism, for entering the water layer of different depth；
Seal case is installed in described snorkel in mechanism；
Water container is arranged in the seal case, for storing water sample；
Water inlet is arranged on the top cover of box of the seal case, for being connected to the water container；
Sealing tap, for being mounted on the oral area of the water container, being used for and being connected in the water container；
Water injecting pump is connected between the sealing tap and water inlet, for saying the water inlet by sealing tap
It injects in the water container；
Fixed frame is slidably matched with the seal case, for fixing the water container；
Elevating mechanism, for driving the sealing tap to go up and down, for described in the oral area installation and removal in the water container
The glide direction of sealing tap, the direction of motion of the elevating mechanism and the fixed frame is vertically arranged；With
Box sealing door, for the fixed frame to be sealed in the seal case.
2. water pollution monitoring sampler as described in claim 1, which is characterized in that the fixed frame includes:
Frame body is hollow structure, through the mounting hole being equipped with for installing the water container；
Snap-gauge is slidably disposed in the frame body, is equipped with waist type via hole, for being sleeved on the middle part of the water container,
And the frame body cooperation grips the water container, the lifting direction of the glide direction of the snap-gauge and the elevating mechanism
It is vertically arranged；With
Elastic component, one end are connected on the frame body, and the other end is connected to the side of the snap-gauge, for providing chucking power.
3. water pollution monitoring sampler as claimed in claim 2, which is characterized in that the upper surface and lower end surface of the frame body
It is equipped with attacker's slot.
4. water pollution monitoring sampler as claimed in claim 2, which is characterized in that the two sides of the frame body are equipped with guiding
Slide plate, the inside of the seal case are equipped with the guide chute for being slidably matched with the blade fin.
5. water pollution monitoring sampler as claimed in claim 2, which is characterized in that the outside of the snap-gauge is equipped with to press
The groove of pressure.
6. water pollution monitoring sampler as described in claim 1, which is characterized in that the elevating mechanism includes:
Guide post is fixed on the top cover of box；
Crane is slidably matched with the guide post, can slide up and down along the guide post, for installing and fixing the sealing
Water nozzle；With
Screw rod is rotatably connected on the top cover of box and is threadedly engaged with the crane, for driving the crane
Lower movement.
7. water pollution monitoring sampler as claimed in claim 6, which is characterized in that the sealing tap includes:
Sharp mouth is filled the water, for connecting the water injecting pump by water pipe；With
Flexible seal cover is located at the periphery for filling the water sharp mouth, for sealing the oral area of the water container.
8. water pollution monitoring sampler as described in claim 1, which is characterized in that the inside border of the box sealing door
Equipped with sealing joint strip, the opening of the seal case is equipped with seal groove corresponding with the sealing joint strip.
9. the water pollution monitoring sampler as described in claim 1-8 any one, which is characterized in that the mechanism packet that snorkels
It includes:
Shell is fixedly connected with the seal case；
The inside of the shell is arranged in air bag；
Air accumulator is connected to by solenoid valve with the air bag；
Propeller is arranged in the two sides of the shell, is used to provide power；With
Depth measurement sensor, for detecting the depth of dive.
10. water pollution monitoring sampler as claimed in claim 9, which is characterized in that water pollution monitoring sampler also wraps
It includes:
Controller is connect with the solenoid valve, the propeller and the water injecting pump respectively；
Display screen is connect with the controller；
Guide rope, one end are fixed on the seal case, and are electrically connected the solenoid valve, the propeller and the water filling
Pump；With
Take-up is connect with the other end of the guide rope, for winding guide rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041148.2A CN109540594B (en) | 2019-01-16 | 2019-01-16 | Water pollution monitoring sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041148.2A CN109540594B (en) | 2019-01-16 | 2019-01-16 | Water pollution monitoring sampling device |
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| Publication Number | Publication Date |
|---|---|
| CN109540594A true CN109540594A (en) | 2019-03-29 |
| CN109540594B CN109540594B (en) | 2020-03-31 |
Family
ID=65835791
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910041148.2A Active CN109540594B (en) | 2019-01-16 | 2019-01-16 | Water pollution monitoring sampling device |
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| CN111122251A (en) * | 2019-12-31 | 2020-05-08 | 深圳市华域环保科技有限公司 | Waste water discharge monitoring system in waste soil treatment process |
| CN111665098A (en) * | 2020-06-23 | 2020-09-15 | 李丹凤 | Water quality monitoring stratified sampling device |
| CN112763266A (en) * | 2020-12-29 | 2021-05-07 | 台州市污染防治工程技术中心 | River course water quality testing sampling device |
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| CN104006987A (en) * | 2014-05-13 | 2014-08-27 | 江苏爵格工业设备有限公司 | Closed sampling device |
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| CN112763266A (en) * | 2020-12-29 | 2021-05-07 | 台州市污染防治工程技术中心 | River course water quality testing sampling device |
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| Publication number | Publication date |
|---|---|
| CN109540594B (en) | 2020-03-31 |
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