CN109541161B - Movable water quality on-line monitoring and early warning device - Google Patents
Movable water quality on-line monitoring and early warning device Download PDFInfo
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- CN109541161B CN109541161B CN201811387175.7A CN201811387175A CN109541161B CN 109541161 B CN109541161 B CN 109541161B CN 201811387175 A CN201811387175 A CN 201811387175A CN 109541161 B CN109541161 B CN 109541161B
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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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- 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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- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
The invention discloses a movable water quality on-line monitoring and early warning device which comprises an unmanned ship capable of floating on water, a controller supported on the unmanned ship and a detection probe supported on the unmanned ship through a support structure and connected with the controller through signals, wherein the controller can detect water quality according to the detection probe, the support structure can stretch and retract, and the stretching and the retracting of the support structure are realized through a water suction pump. The device can move to the position of needs as required to because the test probe can stretch out and draw back, can pack up the test probe at the in-process that removes, reduce resistance and can protect the probe.
Description
Technical Field
The invention relates to the technical field of river or lake water quality detection, in particular to a movable water quality on-line monitoring and early warning device.
Background
With the development of society and the attention of people to life health, and the increasing shortage and deterioration of water resources, the application of a water quality real-time monitoring system is paid attention to, and with the gradual perfection and maturity of a water quality monitoring technology, the water quality monitoring technology has become a main means for the environmental protection management department to monitor the water quality and the water status of the district in real time.
Most of the existing water quality detection devices are fixed like buoys and the like, are fixed at the same position of a river or a lake for a long time, can play a certain role in detection and early warning, but can only detect the water quality condition in a specific range, and more buoys are needed to detect the whole or most of water areas, so that the cost is necessarily increased. Furthermore, when short-term monitoring of some waters is required or sudden pollution is encountered, repeated installation and removal is required if a fixed detection device such as a buoy is still employed, which also increases labor costs and sometimes involves hazards for the constructors.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a movable water quality on-line monitoring and early warning device which adopts a ship as a carrier, is flexible and can timely convey a monitoring device to a designated position for monitoring or sampling.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a movable quality of water on-line monitoring and early warning device, includes unmanned ship that can float on water, supports the controller on unmanned ship and through bearing structure support on unmanned ship and with controller signal connection's test probe, the controller can detect quality of water according to test probe, its characterized in that, bearing structure includes a plurality of buoyancy rings that set up the unmanned ship outside, supports the lift sleeve that detects on buoyancy rings, sliding seal connection in detecting lift sleeve through the fixed plate along upper and lower direction, test probe installs the lower extreme at lift test rod, and every buoyancy is gone up and is supported a plurality of lift sleeves, and every detects lift sleeve all includes the detection section of thick bamboo, has seted up the detection section of thick bamboo water flow port at the upper end of every detection section of thick bamboo, detect the delivery port intercommunication of a water flow port and the pump of installing in unmanned ship, the pump is connected with the controller electricity and the water inlet of pump stretches into in the water that wait to detect through the pipeline, the controller can control the pump start and then drive lift test rod stretches out from a detection section of thick bamboo.
Preferably, at least one of the plurality of sensing cylinders supported on the same buoyancy ring is slidably provided with an intermediate lift cylinder inside, the number of intermediate lift cylinders being different in different sensing cylinders.
Preferably, a first water delivery loop is arranged above the detection barrels supported on the same buoyancy ring, and the first water delivery loop is connected to the detection barrel water flow port of the corresponding detection barrel through a plurality of first connecting pipes respectively.
Preferably, at least one of the plurality of first connecting pipes corresponding to the same buoyancy ring is provided with a sampling port, and a sampling bottle for sampling water to be detected is detachably connected to the sampling port.
Preferably, a valve for opening or closing the sampling port is provided at the position of the sampling port, a ventilation port is provided at the upper end of the sampling bottle and at one side of the mouth of the sampling bottle, and a one-way valve is provided on the ventilation port, the one-way valve allowing gas or liquid to flow from the inside of the sampling bottle to the outside through the ventilation port.
Preferably, a second water delivery ring pipe is supported in the unmanned ship, the second water delivery ring pipe is respectively communicated with the first water delivery ring pipes through a plurality of inclined water delivery pipes and is connected with a water outlet of the water suction pump, and an electromagnetic valve electrically connected with the controller is arranged on each inclined water delivery pipe.
Preferably, two propulsion water pipes are arranged at the stern of the unmanned ship, water outlets of the two propulsion water pipes face to the right rear of the ship body and are symmetrically arranged relative to the central line of the unmanned ship body in the width direction, water inlets of the two propulsion water pipes are communicated with the water outlet of the water suction pump, and electromagnetic valves electrically connected with the controller are arranged on the two propulsion water pipes.
Preferably, a water-gas dual-purpose pump electrically connected with the controller is arranged in the unmanned ship, the input end of the water-gas dual-purpose pump is communicated with the second water delivery loop pipe, and the output end of the water-gas dual-purpose pump extends into water through the water pipe.
Preferably, a wireless network module is arranged in the controller, and the controller can communicate with a remote server through the wireless network module.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the unmanned ship form, and can convey the detection probe to a required position; and a driving device is arranged on the unmanned ship, and a wireless network device is arranged on the controller, so that the unmanned ship can be remotely controlled.
2. The detection probe can stretch out and draw back, and the unmanned ship can retract the detection probe in the moving process so as to reduce resistance and protect the detection probe.
3. The expansion and the sampling of the detection probe and the driving of the unmanned ship are all completed by adopting the same water pump, so that a plurality of electrical elements are reduced, and the cost of the device is reduced.
Drawings
FIGS. 1 and 2 are perspective views of a preferred embodiment of the present invention at different angles;
FIG. 3 is a perspective view of a support structure of the present invention;
FIG. 4 is an enlarged view of FIG. 3 at A;
FIGS. 5 and 6 are cross-sectional views of support structures;
FIG. 7 is a cross-sectional view of a test lift sleeve;
FIGS. 8 and 9 are schematic diagrams showing the deployment structure of the lifting sleeve according to the present invention;
fig. 10 is a structural view of the sampling bottle.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1-10, the movable water quality on-line monitoring and early warning device comprises an unmanned ship 1 capable of floating on water, a controller 28 supported on the unmanned ship 1, and a detection probe supported on the unmanned ship 1 and connected with the controller through signals, wherein the controller can detect water quality according to the detection probe. The controller 28 is of prior art and will not be described in detail herein.
The detection probe is supported on the outer side of the unmanned ship 1 through a supporting structure. The supporting structure comprises a buoyancy ring 8 arranged on the outer side of the unmanned ship 1, a detection lifting sleeve 14 supported on the buoyancy ring 8 through a fixing plate 15, and a lifting detection rod 16 connected in the detection lifting sleeve 14 in a sliding sealing manner, wherein the detection probe is arranged at the lower end of the lifting detection rod 16 through a detection plate 18, and a wire connecting hole 17 is formed in the lifting detection rod 16 so as to facilitate connection of the detection probe with a controller 28 through a wire. The detection lifting sleeve 14 can stretch and retract to drive the detection probe to move up and down so as to insert the detection probe into water.
The buoyancy ring 8 has a plurality of, preferably five buoyancy rings. And, there are four said detecting lift sleeves 14 in each buoyancy ring 8, the four said detecting lift sleeves 14 include the first detecting cylinder 1401, the second detecting cylinder 1402, the third detecting cylinder 1403 and the fourth detecting cylinder 1404 whose lower ends are fixed on the fixed plate 15, respectively. The lifting detection rod 16 in the first detection cylinder 1401 is connected in a sliding and sealing manner in the first detection cylinder 1401, one middle lifting cylinder 23, two middle lifting cylinders 23 and three middle lifting cylinders 23 are respectively connected in a sliding manner in the second detection cylinder 1402, the third detection cylinder 1403 and the fourth detection cylinder 1404, each middle lifting cylinder 23 is provided with a sliding cavity 24, the middle lifting cylinder 23 can receive the lifting detection rod 16 or the middle lifting cylinder 23 of the next stage through the sliding cavity 24, the extension and retraction of the detection probe can be realized through the relative sliding of the detection cylinders, the middle lifting cylinder 23 and the lifting detection rod 16, and the depth which can be reached by the detection probes corresponding to different detection cylinders can be different according to the number of the middle lifting cylinders 2.
A detection cylinder water flow port 31 into which water enters is provided at the upper end of each detection cylinder, and when water enters the detection cylinder from the detection cylinder water flow port 31, the lifting detection rod 16 and the middle lifting cylinder 23 can be driven to extend out, so that the detection probe can extend into the water. When water flows out from the detection cylinder water flow port 31, the lifting detection rod 16 and the intermediate lifting cylinder 23 can be driven to retract from the water.
Specifically, install the suction pump 3 with controller 28 signal connection in unmanned ship 1, the pumping end of suction pump 3 is connected with suction pipe 2, the one end that suction pipe 2 kept away from suction pump 3 passes unmanned ship 1's hull and arranges in water, the play water end of suction pump 3 is connected with outlet pipe 4, outlet pipe 4 and detection section of thick bamboo water flow mouth 31 intercommunication, when the height of lift measuring stick 16 is adjusted in the needs lift, make full use of lake or river water, control suction pump 3 through controller 28 and open, utilize suction pump 3 to draw water from the aquatic through suction pipe 2 for water passes through outlet pipe 4 and gets into in detecting lift sleeve 14, utilize water pressure to go up and down lift measuring stick 16.
The upper end of each intermediate lift cylinder 23 is provided with a through hole 25 communicating with the slide chamber 24, the through hole 25 being capable of introducing water into the slide chamber 24 and generating pressure in the slide chamber 24 to push out the intermediate lift cylinder 23 or the lift detection lever 16 of the next stage downward.
In order to facilitate water injection of the water pump 3 into a plurality of detection barrels and reduce the number of pipelines, a first water delivery ring pipe 7 is arranged above the detection barrels on the same buoyancy ring 8, detection barrel water flow ports 31 of the four detection barrels are respectively connected with the first water delivery ring pipe 7 through first connecting pipes 10, and the first water delivery ring pipe 7 is communicated with the water pump 3 through a water outlet pipe 4, so that the water pump 3 can simultaneously send water into the four detection barrels through the first water delivery ring pipe 7.
A collecting vessel 11 is provided on each first connecting tube 10, a collecting net 12 is provided in the collecting vessel 11, and the collecting net 12 has a filtering function, so that large impurities can be prevented from entering the detecting vessel. Preferably, the inner diameter of the collecting cylinder 11 is larger than that of the first connection pipe 10, and the collecting net 12 is spaced apart from the bottom surface of the collecting cylinder 11 by a certain distance, so that the flow rate can be reduced and the filtering effect can be improved while the flow rate is ensured.
The lower end of each lifting detection rod 16 is provided with a plurality of detection probes, specifically, a COD sensor 19 for detecting the COD concentration in water, an ammonia nitrogen sensor 20 for detecting the ammonia nitrogen concentration in water, a total nitrogen sensor 21 for detecting the total nitrogen concentration in water, and a heavy metal sensor 22 for detecting the heavy metal concentration in water. Wherein, BOD sensor can adopt OPUS spectroscopy multiparameter analyzer, and ammonia nitrogen sensor model is JF-NH4-485, and total nitrogen sensor model is NHN-202, and heavy metal sensor model is HR-NO2-485. Of course, sensors for detecting other parameters may be provided as desired. The detection probes mounted on the lower ends of the lift detection bars 16 supported by the same buoyancy ring 8 may be identical or different.
In order to sample water, a sampling port 13 for connecting a sampling bottle 32 is provided on the first connecting pipe 10 at a position close to the detection cylinder, and when water enters the detection cylinder from the first connecting pipe 10, a part of water flows out of the sampling port 13 and enters the sampling bottle 32.
A valve 131 is provided at the sampling port 13, and the sampling port 13 can be closed when the sampling bottle 32 is not required to be used or when the sampling port 13 is required to be closed in other cases by providing the valve 131. The actual opening size of the sampling port 13 can be adjusted by the valve 131, so that the influence of the sampling port 13 on the water pressure can be reduced.
The bottle mouth 321 of the sampling bottle 32 is detachably connected with the sampling port 13 by threads and the like so as to facilitate the installation and the disassembly of the sampling bottle 32.
Meanwhile, in order to enable water to smoothly enter the sampling bottle 32, a ventilation port 322 is arranged on one side of the bottle mouth 321, a one-way valve 323 is arranged on the ventilation port 322, and the one-way valve 323 can enable liquid or gas in the sampling bottle 32 to escape from the ventilation port 322, and cannot enable external liquid or gas to enter the sampling bottle 32 from the ventilation port 322.
At least one of the four first connection pipes 10 corresponding to each buoyancy ring 8 is provided with the sampling port 32. Of course, the sampling port 32 may be provided on each first connection pipe 10, and the sampling bottle 32 may be connected to the sampling port 32 as needed to perform sampling.
In order to realize that the water pump supplies water to the first water delivery ring pipe 7, a second water delivery ring pipe 5 is arranged on the unmanned ship 1, the second water delivery ring pipe 5 is communicated with the water outlet pipe 4 of the water pump 3, and each first water delivery ring pipe 7 is communicated with the second water delivery ring pipe 5 through an inclined water pipe 6, so that the water pump 3 can enter the detection barrel through the second water delivery ring pipe 5 and the first water delivery ring pipe 7, and the detection probe stretches into water to realize detection and complete sampling.
The second water delivery loop pipe 5 is provided with a pressure relief valve, when the water pressure reaches a set value, the pressure relief valve is opened, and the water pressure can be prevented from rising continuously.
Preferably, a first electromagnetic valve in signal connection with the controller is arranged on each inclined water pipe 6, and the controller can control which one or more first water delivery rings 7 the water in the second water delivery ring pipe 5 enters through the first electromagnetic valve, so that the detection probe can work as required. For example, by controlling the first solenoid valve to open at different times, water quality at the same location for different periods of time can be detected and sampled, and water samples taken at different periods of time enter different sampling bottles 32. Alternatively, water at different locations may be sampled and the water at different locations introduced into different sampling bottles 32.
The unmanned ship 1 is further provided with a water-air dual-purpose pump 27, the water-air dual-purpose pump 27 is electrically connected with the controller 28, the input end of the water-air dual-purpose pump 27 is connected with the second water delivery ring pipe 5 through the water-air pumping pipe 26, the output end of the water-air dual-purpose pump 27 is connected with the water-air outlet pipe 9, one end, far away from the water-air dual-purpose pump 27, of the water-air outlet pipe 9 is arranged on the outer side of the unmanned ship 1, after the unmanned ship 1 finishes detecting water quality in a certain area, the water-air dual-purpose pump 27 is started through the controller 28, water in the detection lifting sleeve 14 is pumped through the second water delivery ring pipe 5, water and air in the detection lifting sleeve 14 are pumped by utilizing the characteristics of the water-air dual-purpose pump 27, so that the internal pressure of the detection lifting sleeve 14 is reduced, and the lifting detection rod 16 is reset under the action of external water pressure.
And, through the cooperation of aqueous vapor dual-purpose pump 27 and suction pump 3, can wash second water delivery ring canal 5 in order to avoid the water of previous time to the sample of last time influence. Specifically, when the second water delivery loop pipe 5 is cleaned, the controller 28 closes the first electromagnetic valve completely, and starts the water suction pump 3 and the water-air dual-purpose pump 27, so that water in the second water delivery loop pipe 5 is pumped out while water is injected into the second water delivery loop pipe 5, and the water remaining in the second water delivery loop pipe 5 can be replaced by water to be sampled at the moment after a set time.
Two propulsion water pipes 29 with water outlets facing the rear of the ship body are also arranged at the tail part of the unmanned ship 1, the two propulsion water pipes 29 are oppositely arranged in the width direction of the ship body, the two propulsion water pipes 29 are communicated with the water outlet pipe 4, and then the unmanned ship 1 can be driven to advance when water is discharged from the propulsion water pipes 29 through the water suction pump 3. The propulsion water pipe 29 can be located below the water surface when the unmanned ship 1 is put into the water in the up-and-down position of the unmanned ship 1. The water outlets of the two push water pipes 29 are aligned in the front-rear direction.
Further, a second solenoid valve is provided on each of the propulsion water pipes 29 in signal connection with the controller 28, and the controller 28 can control whether the propulsion water pipe 29 is turned on or not by controlling the second solenoid valve. When detection and sampling are needed, the second electromagnetic valve is closed, and the first electromagnetic valve is selectively opened; when the vehicle needs to advance, the second electromagnetic valve is opened, and the first electromagnetic valve is completely closed; when steering is needed, one of the second electromagnetic valves is opened, and the first electromagnetic valve is closed completely.
Also provided in the controller 28 is a wireless network module, which may be a GPRS module, which is specifically known in the art and will not be described in detail herein. Through the wireless network module, the controller 28 can send the detected water quality data to a remote server in time and complete sampling. And, the remote server can compare with the standard value after receiving water quality data, and when abnormal time appears the remote server can remind the staff in order to realize early warning, and the staff can handle according to the condition, for example control unmanned ship takes out the water sample in the sample bottle 32 to the appointed position in order to carry out further analysis.
Preferably, a GPS module is further disposed in the controller 28, and the GPS module can acquire the geographical location of the device in real time, so that a worker can conveniently find the device according to the geographical location, and can conveniently control the worker to transport the device to a required location for detection or sampling.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a portable quality of water on-line monitoring and early warning device, includes unmanned ship that can float on water, support on unmanned ship's controller and the test probe that supports on unmanned ship and be connected with the controller signal through bearing structure, the controller can detect quality of water according to test probe, characterized in that, bearing structure includes a plurality of buoyancy circles that set up the unmanned ship outside, supports on the buoyancy circle along upper and lower direction through the fixed plate and detects the lift sleeve, the lift detection pole of slip seal connection in detecting the lift sleeve, the test probe is installed in the lower extreme of lift detection pole, supports a plurality of detection lift sleeves on every buoyancy circle, and every detects the lift sleeve and all includes the detection section of thick bamboo, has seted up the detection section of thick bamboo water flow port at the upper end of every detection section of thick bamboo, the delivery port of detection section of thick bamboo water and the water pump of installing in unmanned ship is connected with the controller electricity and the water pump's water inlet stretches into in the water that waits to detect through the pipeline, the controller can control the water pump start and then drive lift detection pole stretches out from the detection section of thick bamboo;
a first water delivery ring pipe is arranged above the detection cylinders supported on the same buoyancy ring, and the first water delivery ring pipe is connected to the corresponding detection cylinder water flow port of the detection cylinder through a plurality of first connecting pipes respectively;
at least one of the first connecting pipes corresponding to the same buoyancy ring is provided with a sampling port, and a sampling bottle for sampling water to be detected is detachably connected to the sampling port;
an intermediate lifting cylinder is slidably arranged in at least one of the plurality of detection cylinders supported on the same buoyancy ring, and the number of the intermediate lifting cylinders in different detection cylinders is different; each middle lifting cylinder is provided with a sliding cavity;
the upper end of each detection cylinder is provided with a detection cylinder water flow port for water to enter, and when water enters the detection cylinder from the detection cylinder water flow port, the lifting detection rod and the middle lifting cylinder can be driven to extend out; when water flows out from the water flow port of the detection cylinder, the lifting detection rod and the middle lifting cylinder can be driven to retract from the water;
the water pumping end of the water pumping pump is connected with a water pumping pipe, one end of the water pumping pipe, which is far away from the water pumping pump, penetrates through the hull of the unmanned ship and is placed in water, the water outlet end of the water pumping pump is connected with a water outlet pipe, and the water outlet pipe is communicated with the water flow port of the detection cylinder;
the upper end of each intermediate lifting cylinder is provided with a through hole communicated with the sliding cavity, and the through hole can introduce water into the sliding cavity and generate pressure in the sliding cavity so as to push the intermediate lifting cylinder or the lifting detection rod of the next stage downwards.
2. The portable on-line monitoring and early warning device for water quality according to claim 1, wherein a valve for opening or closing the sampling port is arranged at the position of the sampling port, a ventilation port is arranged at the upper end of the sampling bottle and positioned at one side of the bottle mouth of the sampling bottle, and a one-way valve is arranged on the ventilation port, wherein the one-way valve allows gas or liquid to flow from the inside of the sampling bottle to the outside through the ventilation port.
3. The movable water quality on-line monitoring and early warning device according to claim 2, wherein a second water delivery ring pipe is supported in the unmanned ship, the second water delivery ring pipe is respectively communicated with the first water delivery ring pipes through a plurality of inclined water delivery pipes and is connected with a water outlet of the water suction pump, and an electromagnetic valve electrically connected with the controller is arranged on each inclined water delivery pipe.
4. The movable water quality on-line monitoring and early warning device according to claim 1, wherein two propulsion water pipes are arranged at the stern of the unmanned ship, water outlets of the two propulsion water pipes are symmetrically arranged towards the right rear of the ship body and relative to the central line of the unmanned ship body in the width direction, water inlets of the two propulsion water pipes are communicated with the water outlet of the water suction pump, and electromagnetic valves electrically connected with the controller are arranged on the two propulsion water pipes.
5. The movable water quality on-line monitoring and early warning device according to claim 1, wherein a water-gas dual-purpose pump electrically connected with the controller is arranged in the unmanned ship, the input end of the water-gas dual-purpose pump is communicated with the second water delivery ring pipe, and the output end of the water-gas dual-purpose pump extends into water through a water pipe.
6. The device for on-line monitoring and early warning of water quality according to claim 1, wherein a wireless network module is arranged in the controller, and the controller can communicate with a remote server through the wireless network module.
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| CN201811387175.7A CN109541161B (en) | 2018-11-21 | 2018-11-21 | Movable water quality on-line monitoring and early warning device |
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| CN201811387175.7A CN109541161B (en) | 2018-11-21 | 2018-11-21 | Movable water quality on-line monitoring and early warning device |
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| CN109541161B true CN109541161B (en) | 2023-08-15 |
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| CN114088909A (en) * | 2021-11-22 | 2022-02-25 | 杭州谱育科技发展有限公司 | Mobile water quality monitoring system and method |
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| CN108844781A (en) * | 2018-08-09 | 2018-11-20 | 河南畅慷环保科技有限公司 | Environmental project detects sampler with water body |
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| CN109541161A (en) | 2019-03-29 |
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