CN115343116A - Water quality monitoring device for river channel environment management and detection method thereof - Google Patents
Water quality monitoring device for river channel environment management and detection method thereof Download PDFInfo
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- CN115343116A CN115343116A CN202211283194.1A CN202211283194A CN115343116A CN 115343116 A CN115343116 A CN 115343116A CN 202211283194 A CN202211283194 A CN 202211283194A CN 115343116 A CN115343116 A CN 115343116A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 238000007726 management method Methods 0.000 title description 8
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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
- G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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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
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- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The invention discloses a water quality monitoring device for river channel environment management and a detection method thereof, and particularly relates to the field of water quality monitoring. The invention makes the bottom of the plurality of samplers correspond to different water layers respectively through the spiral extension of the plurality of samplers, obtains water samples of different water layers, and makes the device have diversity, comprehensiveness and accuracy in water quality detection of water areas through each sampler penetrating into the water layers of different depths.
Description
Technical Field
The invention relates to the technical field of water quality monitoring, in particular to a water quality monitoring device for river channel environment management and a detection method thereof.
Background
The water quality monitoring is a process for monitoring and measuring the types of pollutants in the water body, the concentration and the variation trend of various pollutants and evaluating the water quality condition. The monitoring range is very wide, and comprises uncontaminated and contaminated natural water (rivers, lakes, seas and underground water) and various industrial drainage and the like. The main monitoring projects can be divided into two main categories: one is a comprehensive index reflecting the water quality conditions, such as temperature, chroma, turbidity, pH value, conductivity, suspended matters, dissolved oxygen, chemical oxygen demand, biochemical oxygen demand and the like; the other is some toxic substances, such as phenol, cyanogen, arsenic, lead, chromium, cadmium, mercury, organic pesticides and the like.
But current water quality on-line monitoring device still has more shortcoming when in-service use, if to carrying out the sample monitoring in this certain waters, traditional sampling mode is directly to throw the sample bucket into aquatic, and the sample bucket is filled the back and is mentioned the sample bucket. The sampling mode is convenient to operate, but the sampling can not be carried out on the water at different depth positions, and the monitoring result of the water area is easy to generate larger deviation.
Disclosure of Invention
The invention provides a water quality monitoring device for river channel environment management and a detection method thereof, and aims to solve the problems that: the existing online water quality monitoring device is not convenient for obtaining water samples of different depths.
In order to achieve the purpose, the invention provides the following technical scheme: a water quality monitoring device for river channel environment management comprises a multistage sampling mechanism and a carrier mechanism for mounting the multistage sampling mechanism, wherein the multistage sampling mechanism comprises multistage nested samplers, the outermost sampler is rotatably mounted on the carrier mechanism, the side wall surfaces of every two multistage samplers, which are in contact with each other, are provided with threads which are matched with each other, one side of the multistage sampling mechanism is provided with a movable pin, the pin is inserted into the multistage nested samplers, the multistage samplers are locked, a limiting part is mounted on the carrier mechanism, the limiting part is coaxial with the multistage samplers, and the limiting part sequentially limits the autorotation of one sampler in the multistage samplers and guides the expansion of the sampler;
the carrier mechanism is provided with a driving device, the limiting piece sequentially limits one sampler in the multistage samplers, the sampler limited by the limiting piece is sequentially unlocked by the pin, and when the driving device drives the outermost sampler to rotate, the sampler limited by the limiting piece does telescopic motion;
the multi-stage sampler is a hollow cylindrical structure provided with a water inlet, a sealing cover is arranged at the water inlet of the sampler, and the sealing cover is opened and closed to realize water inlet or water drainage of the sampler.
In a preferred embodiment, the multistage sampling mechanism comprises at least three samplers sleeved together, the three samplers are a first-stage sampler, a second-stage sampler and a third-stage sampler from outside to inside in sequence, the sealing covers comprise a first-stage sealing cover, a second-stage sealing cover and a third-stage sealing cover, and the first-stage sealing cover, the second-stage sealing cover and the third-stage sealing cover respectively correspond to the first-stage sampler, the second-stage sampler and the third-stage sampler one to one.
In a preferred embodiment, the locating part includes the inflatable shaft, and the keyway that runs through is seted up on the surface of inflatable shaft, and the inside movable mounting of keyway has bloated key, and the inside of inflatable shaft is equipped with the air cavity, and air cavity and outside air supply intercommunication, and the internal pressure increase or the reduction of air cavity drive bloated key stretches out or retracts in the keyway.
In a preferred embodiment, the inflatable shaft penetrates through the tops of the secondary sampler and the tertiary sampler, a groove is formed in the top of the inner side of the secondary sampler, and the inflatable key is matched with the groove when the inflatable key extends out of the key groove; the top of the inner side of the tertiary sampler is integrally formed with a convex block, and when the expansion key is retracted into the key groove, the convex block is matched with the key groove.
In a preferred embodiment, a gear ring is fixedly sleeved on the outer peripheral side of the primary sampler, a gear is fixedly connected to the driving end of the driving device, and the gear is meshed with the gear ring.
In a preferred embodiment, the sealing cover comprises a first-stage sealing cover, a second-stage sealing cover and a third-stage sealing cover, the bottoms of the first-stage sampler, the second-stage sampler and the third-stage sampler are in a step shape, the first-stage sealing cover, the second-stage sealing cover and the third-stage sealing cover are all of an annular structure, and the first-stage sealing cover, the second-stage sealing cover and the third-stage sealing cover respectively correspond to the bottoms of the first-stage sampler, the second-stage sampler and the third-stage sampler one to one.
In a preferred embodiment, the sealed lid of one-level, the surface of the sealed lid of second grade and the sealed lid of tertiary all runs through the through-hole, the one-level sampler, the thief hole has been seted up to the bottom of second grade sampler and tertiary sampler, thief hole and through-hole dislocation set, equal fixedly connected with corrugated metal pipe between the sealed lid of one-level and the sealed lid of second grade and the tertiary, two corrugated metal pipe suit are outside second grade sampler and tertiary sampler respectively, and two corrugated metal pipe are located the inboard in two thief hole passageways respectively, the connecting rod is installed at the top of the sealed lid of one-level, the connecting rod is kept away from the tip of the sealed lid of one-level and is connected with carrier mechanism, the sealed lid of one-level and one-level sampler normal running fit, the sealed lid of second grade and secondary sampler normal running fit, tertiary sealed lid and tertiary sampler normal running fit.
In a preferred embodiment, the carrier mechanism comprises a shell, an air bag is sleeved outside the shell, a cavity is arranged inside the shell, a lifting cylinder capable of lifting is installed in the cavity, the primary sampler is fixedly arranged in the lifting cylinder, the driving device is fixedly arranged on the inner wall of the lifting cylinder, and the air expansion shaft is also fixedly arranged in the lifting cylinder.
In a preferred embodiment, a driving part is installed at the top of the inner cavity of the shell, a rod is arranged at the driving end of the driving part, one end of the rod penetrates through the top of the shell, and the other end of the rod is fixedly connected with the top of the lifting cylinder.
A detection method of a water quality monitoring device for river channel environment management comprises the following steps,
s1, establishing a water quality monitoring model, setting a color change color level of a solution after the solution with different substance concentrations reacts with a chromogenic reagent, then according to the color level of the solution with different substance concentrations, defining concentration gradients corresponding to the color levels of different colors as calibration, inputting the color calibration into a processing system, and editing a colorimetric program;
s2, collecting water sample water quality monitoring information, wherein through multi-stage extension of a multi-stage sampling mechanism, a first-stage sampler, a second-stage sampler and a third-stage sampler are enabled to obtain water samples of water layers with different depths in a water area to be detected, equal color reagents are added into the water samples in the first-stage sampler, the second-stage sampler and the third-stage sampler respectively, a camera unit is used for shooting water sample color pictures in the first-stage sampler, the second-stage sampler and the third-stage sampler respectively, water sample color change image information is obtained based on the monitored water sample color pictures in the first-stage sampler, the second-stage sampler and the third-stage sampler, and the information is transmitted to a processing system;
and S3, processing water sample water quality monitoring information, analyzing and comparing colors based on the water sample color change image information and the calibration which is made in advance to obtain a colorimetric result, outputting a water quality monitoring result, and uploading the water quality monitoring result to a database.
The invention has the technical effects and advantages that:
1. according to the invention, the bottom ends of the plurality of samplers correspond to different water layers respectively through the spiral extension of the plurality of samplers, water samples of different water layers are obtained, and the device has diversity, comprehensiveness and accuracy in water quality detection of a water area through the fact that each sampler extends into the water layers of different depths;
2. according to the invention, through slow extension of the multi-stage sampler, not only can water samples of different water layers be collected, but also exchange among water of different water layers can be reduced in the slow deformation process, so that the subsequently obtained water quality detection result is more accurate.
Drawings
FIG. 1 is a schematic front view of a multi-stage sampling mechanism according to the present invention;
FIG. 2 is a schematic cross-sectional view of the multi-stage sampling mechanism of the present invention;
FIG. 3 is a schematic cross-sectional view of the multi-stage sampling mechanism of the present invention in a one-stage extended state;
FIG. 4 is a schematic cross-sectional view of the multistage sampling mechanism of the present invention in a two-stage extended state;
FIG. 5 is a schematic diagram of the matching between the sampling hole of the sampler and the through hole of the sealing cover according to the present invention;
FIG. 6 isbase:Sub>A schematic cross-sectional view taken at A-A of FIG. 2 in accordance with the present invention;
FIG. 7 is a schematic cross-sectional view taken at B-B of FIG. 3 in accordance with the present invention;
FIG. 8 is a schematic cross-sectional view of a multi-stage sampling mechanism of the present invention in practical use;
FIG. 9 is a schematic external view of the water quality monitoring apparatus of the present invention.
The reference signs are: 1. a housing; 11. an air bag; 12. a drive member; 2. a lifting cylinder; 21. a rod member; 3. a multi-stage sampling mechanism; 31. a first-stage sampler; 311. a primary sealing cover; 312. a toothed ring; 32. a secondary sampler; 321. a secondary sealing cover; 322. a groove; 33. a third-stage sampler; 331. a third-stage sealing cover; 332. a bump; 34. a sampling hole; 35. a through hole; 4. a drive device; 5. an air expansion shaft; 51. a keyway; 52. a key is expanded; 53. an air cavity; 6. a pin; 7. a metal bellows; 8. a connecting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to the attached drawings 1-9 of the specification, a water quality monitoring device for river channel environment management comprises a multistage sampling mechanism 3 and a carrier mechanism for mounting the multistage sampling mechanism 3, wherein the multistage sampling mechanism 3 comprises multistage nested samplers, the outermost sampler is rotatably mounted on the carrier mechanism, the side wall surfaces of the multistage samplers, which are in contact with each other, are provided with mutually matched threads, one side of the multistage sampling mechanism 3 is provided with a movable pin 6, the pin 6 is inserted into the multistage nested samplers, the multistage sampler is locked, a limiting part is mounted on the carrier mechanism, the limiting part is coaxial with the multistage sampler, and the limiting part sequentially limits one of the multistage samplers to rotate and stretch and guide the sampler;
the carrier mechanism is provided with a driving device 4, the limiting piece sequentially limits one sampler in the multistage samplers, the pin 6 sequentially unlocks the sampler limited by the limiting piece, and when the driving device 4 drives the outermost sampler to rotate, the sampler limited by the limiting piece does telescopic motion;
the multi-stage sampler is a hollow cylindrical structure provided with a water inlet, a sealing cover is arranged at the water inlet of the sampler, and the sealing cover is opened and closed to realize water inlet or water drainage of the sampler.
The stopper is fixed to the carrier mechanism, the pin 6 moves with the sampler, and the driving mechanism may be provided to drive the pin 6 to be automatically inserted into or pulled out from the multistage sampler, or to manually pull out or insert the pin 6, and the driving device 4 is a power source, such as a motor, for driving the outermost sampler to rotate.
In this embodiment, the implementation scenario specifically includes: initially, the pin 6 is transversely inserted into all the samplers sleeved together to lock the multistage sampler, and the limiting piece limits the guide of the innermost sampler;
when a multistage sampler needs to be extended for sampling, the unlocking pin 6 locks the innermost sampler, the driving device 4 drives other samplers except the innermost sampler to rotate, and the mutually contacted side wall surfaces of every two multistage samplers are provided with mutually matched threads, so that the outer wall of the innermost sampler is in threaded fit with the inner wall of the sampler on the penultimate inner side, the innermost sampler is limited by the rotation direction of the limiting piece and has a guiding effect on the vertical direction, when the outer sampler rotates, the innermost sampler stops driving device 4 due to the matching between the threads and the limited guiding of the limiting piece, and moves axially along the limiting piece, and by controlling the rotation direction of the outer sampler, the innermost sampler can extend out of the nested multistage sampler until the innermost sampler extends to the limit position, so that the sampler is extended slowly, the sampler is convenient to reach the set sampling position, the influence of the sampler inserted into a water source can be reduced, the influence on the water layers between the water sources is avoided, more exchanges of water layers are avoided, and the sampling result is influenced, and after the innermost sampler extends to the limit the innermost sampler to the limit position;
the pin 6 is controlled to release the locking of the sampler at the inner side of the penultimate, the driving device 4 drives the sampler at the outermost side to rotate, and because the sampler at the inner side except the penultimate and the sampler at the innermost side are not locked by the pin 6, under the self-locking action of the screw threads, the sampler at the outer side is a part of the samplers sleeved together, the sampler at the inner side to the penultimate and the sampler at the innermost side are the other part, namely, the sampler at the outer side and the sampler at the innermost side are moved together, and the sampler at the inner side to the penultimate and the sampler at the innermost side are moved together; controlling the limit piece to limit the guide of the sampler at the penultimate inner side at the moment and not to limit the guide of the sampler at the innermost side, when the sampler at the outermost side rotates, and under the matching of screw threads and the limit piece limiting guide, the sampler at the penultimate inner side axially moves along the limit piece and extends out of the nested multistage sampler until the sampler at the penultimate inner side extends to the limit position, stopping the driving device 4, and in the extending process of the sampler at the penultimate inner side, because of self-locking of screw threads, the sampler at the innermost side also continues to extend along with the sampler at the penultimate inner side and submerges into a deeper water area;
according to the principle of extension of the inner side sampler, the pins 6 are sequentially controlled to reduce the locking of one sampler on the inner side each time, the limit pieces are simultaneously controlled to limit and guide the corresponding sampler unlocked by the pins 6, and then the driving device 4 is started to drive the outermost sampler and the outer sampler self-locked by the threads between the outermost sampler to rotate together, so that the inner side sampler is extended from inside to outside one by one until all samplers in the outermost sampler are fully extended, namely, at the moment, the multistage sampling mechanism 3 completes multistage extension, and each extended sampler corresponds to a water area with different depths;
when all the samplers extend and reach the preset positions, the sealing covers for sealing the water inlet holes on the surfaces of the samplers are opened, so that each sampler can obtain water samples of corresponding water layers, and the subsequent detection of the water samples of different water layers is facilitated;
through the multistage slow extension of sampler, not only can gather the water sample that obtains different water layers, at the slow deformation in-process moreover, be favorable to reducing and produce the exchange between the water of different water layers, and then make the quality of water testing result that follow-up obtained more accurate.
The limiting part comprises an inflatable shaft 5, a through key groove 51 is formed in the surface of the inflatable shaft 5, an expansion key 52 is movably mounted inside the key groove 51, an air cavity 53 is formed inside the inflatable shaft 5, the air cavity 53 is communicated with an external air source, the internal pressure of the air cavity 53 is increased or reduced, and the expansion key 52 is driven to extend out of or retract into the key groove 51;
the air expansion shaft 5 penetrates through the tops of the second-stage sampler 32 and the third-stage sampler 33, a groove 322 is formed in the top of the inner side of the second-stage sampler 32, and when the expansion key 52 extends out of the key groove 51, the expansion key 52 is matched with the groove 322; a lug 332 is integrally formed at the top of the inner side of the third-stage sampler 33, and when the expansion key 52 is retracted into the key slot 51, the lug 332 is matched with the key slot 51;
it should be noted that, when the sampler has multiple layers, the inflatable shaft 5 can be used to guide different samplers each time, and the protrusions or grooves with different heights or depths corresponding to the tops of the inner sides of the samplers can be matched by controlling the different distances of the expansion key 52 bulging or extending in the key slot 51, so as to achieve the function of limiting and guiding the key slot 51 or the expansion key 52 and the corresponding sampler.
A gear ring 312 is fixedly sleeved on the outer peripheral side of the primary sampler 31, and a gear is fixedly connected to the driving end of the driving device 4 and is meshed with the gear ring 312;
the drive device 4 is engaged with the ring gear 312 via a gear to rotationally drive the primary sampler 31.
The sealing covers comprise a first-stage sealing cover 311, a second-stage sealing cover 321 and a third-stage sealing cover 331, the bottoms of the first-stage sampler 31, the second-stage sampler 32 and the third-stage sampler 33 are in a step shape, the first-stage sealing cover 311, the second-stage sealing cover 321 and the third-stage sealing cover 331 are all in an annular structure, and the first-stage sealing cover 311, the second-stage sealing cover 321 and the third-stage sealing cover 331 respectively correspond to the bottoms of the first-stage sampler 31, the second-stage sampler 32 and the third-stage sampler 33 one by one;
through holes 35 penetrate through the surfaces of a first-stage sealing cover 311, a second-stage sealing cover 321 and a third-stage sealing cover 331, sampling holes 34 are formed in the bottoms of a first-stage sampler 31, a second-stage sampler 32 and a third-stage sampler 33, the sampling holes 34 and the through holes 35 are arranged in a staggered mode, the sampling holes 34 can coincide with the through holes 35 by rotating the positions of the through holes 35, metal corrugated pipes 7 are fixedly connected between the first-stage sealing cover 311 and the second-stage sealing cover 321 and between the second-stage sealing cover 321 and the third-stage sealing cover 331, the two metal corrugated pipes 7 are respectively sleeved outside the second-stage sampler 32 and the third-stage sampler 33 and are respectively positioned on the inner sides of the paths of the two sampling holes 34, a connecting rod 8 is installed at the top of the first-stage sealing cover 311, the end, far away from the first-stage sealing cover 311, of the connecting rod 8 is connected with a carrier mechanism, the first-stage sealing cover 311 is in running fit with the first-stage sampler 31, the second-stage sealing cover 321 is in running fit with the second-stage sealing cover 32, and the third-stage sealing cover 331 is in running fit with the third-stage sampler 33;
it should be noted that the water inlet is a sampling hole 34; the metal corrugated pipe 7 is connected with the two sealing covers through self deformation, and the secondary sealing cover 321 and the tertiary sealing cover 331 rotate together with the primary sealing cover 311; the first-stage sealing cover 311 is driven to rotate by an external driving source (not shown in the figure) so as to remove the seal between the first-stage sealing cover 311 and the first-stage sampler 31 and simultaneously drive the second-stage sealing cover 321 and the second-stage sampler 32 to remove the seal and the third-stage sealing cover 331 and the third-stage sampler 33 to remove the seal, specifically, the top of the first-stage sealing cover 311 is provided with a connecting rod 8, the other end of the connecting rod 8 is rotatably arranged on a turntable in the lifting cylinder 2, the turntable provides a supporting function for the first-stage sealing cover 311, and the external driving source arranged in the lifting cylinder 2 can drive the turntable to drive the first-stage sealing cover 311 to rotate so that a through hole 35 on the first-stage sealing cover 311 is superposed and corresponds to a sampling hole 34 at the bottom of the first-stage sampler 31, so as to remove the seal between the first-stage sealing cover 311 and the first-stage sampler 31;
it is further described that, since the multistage sampler is inserted through the pin 6, the through hole opened on the surface of the sampler makes the space inside the sampler communicate with the inside of the metal bellows 7, after the three-stage sampler 33 and the two-stage sampler 32 are extended, the metal bellows 7 between the sealing covers is extended, so the volume of the space between the metal bellows 7 and the outer wall of the sampler inside the metal bellows 7 is increased, for example, after the upper metal bellows 7 is extended, the space between the outer wall of the two-stage sampler 32 and the inner wall of the metal bellows 7 is increased, that is, the space inside the two-stage sampler 32 and the metal bellows 7 is increased, the air pressure is decreased, and by combining the double function of the external water pressure, after the two-stage sealing cover 321 is opened, the water in the water area is quickly sucked into the two-stage sampler 32 until the internal and external pressures are balanced, and by the arrangement of the metal bellows 7, the air pressure inside the sampler is changed during the extension and deformation process, thereby greatly increasing the sampling efficiency of the device.
The carrier mechanism comprises a shell 1, an air bag 11 is sleeved outside the shell 1, a cavity is arranged inside the shell 1, a lifting cylinder 2 capable of lifting is arranged in the cavity, a primary sampler 31 is fixedly arranged in the lifting cylinder 2, a driving device 4 is fixedly arranged on the inner wall of the lifting cylinder 2, and an air expansion shaft 5 is also fixedly arranged in the lifting cylinder 2;
it should be noted that, a lifting cylinder or other driving elements are further installed in the housing 1 to drive the lifting cylinder 2 to extend out of the housing 1, so as to ensure that the bottom of the primary sampler 31 extends deep under the water surface.
A driving piece 12 is installed at the top of an inner cavity of the shell 1, a rod piece 21 is arranged at the driving end of the driving piece 12, one end of the rod piece 21 penetrates through the top of the shell 1, and the other end of the rod piece 21 is fixedly connected with the top of the lifting cylinder 2;
it should be noted that, in the practical application of the present invention, specifically, the housing 1 floats on the water surface through the buoyancy of the air bag 11, the rod 21 movably penetrates through the top of the housing 1, the inner side of the rod 21 is provided with a thread, the driving member 12 is a motor, the housing 1 is further provided with a rotatable ring sleeve, the outer surface of the ring sleeve is also provided with a thread, the ring sleeve and the rod 21 are matched through a thread, when the motor drives the ring sleeve to rotate, the thread on the surface of the ring sleeve is matched and extruded with the thread on the inner side of the rod 21, so that the lifting cylinder 2 extends out from the bottom of the housing 1, and the bottom inlet end of the primary sampler 31 is inserted into the water.
In this embodiment, the implementation scenario specifically includes:
third-stage sampler 33 elongation action: when the driving device 4 is started, the gear ring 312 is engaged and driven by the output shaft of the driving device 4, and the primary sampler 31 and the secondary sampler 32 are locked together through the pin 6; an expansion key 52 and a key groove 51 on the inflatable shaft 5 are concave, and the top end opening of the tertiary sampler 33 is matched with the concave part on the inflatable shaft 5, so that the inflatable shaft 5 is used as a guide limiting piece of the tertiary sampler 33; an integrated flange arranged at the top end of the third-stage sampler 33 is matched with the inner peripheral side of the second-stage sampler 32, threads arranged on the outer surface of the flange of the third-stage sampler 33 are meshed with threads arranged on the inner peripheral side of the second-stage sampler 32, when the second-stage sampler 32 rotates along with the first-stage sampler 31, the third-stage sampler 33 axially moves along the air expansion shaft 5 under the limiting and guiding action of the air expansion shaft 5 until the bottom of the flange of the third-stage sampler 33 is abutted against the inner peripheral bottom of the second-stage sampler 32, the third-stage sampler 33 moves to the limit position, and the driving device 4 stops;
secondary sampler 32 elongation action: unlocking the pin 6 to lock the primary sampler 31 and the secondary sampler 32, opening an air source, inflating the air expansion shaft 5 to make the expansion key 52 of the air expansion shaft 5 extend out of the key slot 51 to form an outward convex shape, matching the top opening of the secondary sampler 32 with the outward convex shape of the air expansion shaft 5 to make the air expansion shaft 5 serve as a guide limit part of the secondary sampler 32, matching an integrated flange arranged at the top of the secondary sampler 32 with the inner peripheral side of the primary sampler 31, meshing the threads arranged on the outer surface of the flange of the secondary sampler 32 with the threads arranged on the inner peripheral side of the primary sampler 31, starting the driving device 4, driving the primary sampler 31 to rotate by the driving device 4 through the gear ring 312, when the primary sampler 31 rotates, the secondary sampler 32 axially moves along the air expansion shaft 5 under the guide effect of the air expansion shaft 5 until the bottom of the flange of the secondary sampler 32 is abutted against the inner peripheral bottom of the primary sampler 31, and the secondary sampler 32 moves to a limit position; meanwhile, because the flange of the tertiary sampler 33 is engaged with the inner periphery of the secondary sampler 32 through threads, and the inflatable shaft 5 is separated from the top opening of the tertiary sampler 33, the tertiary sampler 33 moves downwards along with the secondary sampler 32 in the downward movement process of the secondary sampler 32, and then further moves downwards to reach a deeper water layer;
finally, the lifting cylinder 2 is controlled to lift, so that the whole multistage sampling mechanism 3 moves downwards, and the bottom end of the first-stage sampler 31 also extends into the water surface (initially, the bottom ends of the first-stage sampler 31, the second-stage sampler 32 and the third-stage sampler 33 are all positioned above the water surface);
when all the samplers go deep into the water, the driving mechanism is controlled again to drive the first-stage sealing cover 311 to rotate, the sealing between the first-stage sealing cover 311 and the first-stage sampler 31 is released, the second-stage sealing cover 321 and the second-stage sampler 32 rotate relatively under the connecting action of the metal corrugated pipe 7, the third-stage sealing cover 331 and the third-stage sampler 33 rotate relatively, the sampling holes 34 are communicated with the through holes 35, the sealing of each sealing end cover on a water inlet at the bottom of each sampler is released, water in a water layer corresponding to the sampling holes 34 of the sampler enters the sampler under the action of water pressure, and the function of obtaining water samples in different water layers by the device is realized;
the invention makes the bottom ends of the plurality of samplers respectively correspond to different water layers through the spiral extension of the plurality of samplers, obtains water samples of different water layers, and makes the device have diversity, comprehensiveness and accuracy in water quality detection by penetrating each sampler into the water layers of different depths.
A detection method of a water quality monitoring device for river channel environment management comprises the following steps:
s1, establishing a water quality monitoring model, setting a color change color scale of a solution after the solution with different substance concentrations reacts with a color reagent, then according to the color scale of the solution with different substance concentrations, defining concentration gradients corresponding to the color scales of different colors as calibration, recording the color calibration into a processing system, and editing a colorimetric program;
s2, collecting water sample water quality monitoring information, wherein through multi-stage extension of a multi-stage sampling mechanism 3, water samples of water layers with different depths in a water area to be detected are obtained by a first-stage sampler 31, a second-stage sampler 32 and a third-stage sampler 33, the same color developing reagents are respectively added into the water samples in the first-stage sampler 31, the second-stage sampler 32 and the third-stage sampler 33, a camera unit respectively shoots water sample color pictures in the first-stage sampler 31, the second-stage sampler 32 and the third-stage sampler 33, water sample color change image information is obtained based on the monitored water sample color pictures in the first-stage sampler 31, the second-stage sampler 32 and the third-stage sampler 33, and the information is transmitted to a processing system;
and S3, processing water sample water quality monitoring information, analyzing and comparing colors based on the water sample color change image information and the calibration which is made in advance to obtain a colorimetric result, outputting a water quality monitoring result, and uploading the water quality monitoring result to a database.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a water quality monitoring device that river course environmental management used which characterized in that: the multi-stage sampling device comprises a multi-stage sampling mechanism (3) and a carrier mechanism for mounting the multi-stage sampling mechanism (3), wherein the multi-stage sampling mechanism (3) comprises a plurality of stages of samplers which are sleeved together, the most lateral sampler is rotatably mounted on the carrier mechanism, the surfaces of side walls of every two multi-stage samplers, which are in contact with each other, are provided with threads which are matched with each other, one side of the multi-stage sampling mechanism (3) is provided with a movable pin (6), the pin (6) is inserted into the samplers which are sleeved together at a plurality of stages to lock the multi-stage samplers, a limiting part is mounted on the carrier mechanism, the limiting part is coaxial with the multi-stage samplers, and the limiting part sequentially limits one of the multi-stage samplers to rotate and stretch and guide the sampler;
the carrier mechanism is provided with a driving device (4), the limiting part sequentially limits one sampler in the multistage samplers, the sampler limited by the limiting part is sequentially unlocked by the pin (6), and when the driving device (4) drives the sampler at the outermost side to rotate, the sampler limited by the limiting part makes telescopic motion;
the multi-stage sampler is a hollow cylindrical structure provided with a water inlet, a sealing cover is arranged at the water inlet of the sampler, and the sealing cover is opened and closed to realize water inlet or water drainage of the sampler.
2. The water quality monitoring device for river channel environment management according to claim 1, wherein: multistage sampling mechanism (3) include three suit sampler together at least, and three the sampler is one-level sampler (31), second grade sampler (32) and tertiary sampler (33) from the extroversion in proper order, sealed lid includes that one-level seals lid (311), the sealed lid of second grade (321) and tertiary sealed lid (331), just one-level seals lid (311), the sealed lid of second grade (321) and tertiary sealed lid (331) respectively with one-level sampler (31), second grade sampler (32) and tertiary sampler (33) one-to-one.
3. The water quality monitoring device for river channel environment management according to claim 2, characterized in that: the limiting part comprises an inflatable shaft (5), a through key groove (51) is formed in the surface of the inflatable shaft (5), an expansion key (52) is movably mounted inside the key groove (51), an air cavity (53) is arranged inside the inflatable shaft (5), the air cavity (53) is communicated with an external air source, the internal pressure of the air cavity (53) is increased or reduced, and the expansion key (52) is driven to stretch out or retract into the key groove (51).
4. The water quality monitoring device for river channel environment management according to claim 3, wherein: the inflatable shaft (5) penetrates through the tops of the secondary sampler (32) and the tertiary sampler (33), a groove (322) is formed in the top of the inner side of the secondary sampler (32), and when the expansion key (52) extends out of the key groove (51), the expansion key (52) is matched with the groove (322); the top of the inner side of the tertiary sampler (33) is integrally provided with a lug (332), and when the expansion key (52) retracts into the key slot (51), the lug (332) is matched with the key slot (51).
5. The water quality monitoring device for river channel environment management according to claim 4, wherein: a gear ring (312) is fixedly sleeved on the outer peripheral side of the primary sampler (31), a gear is fixedly connected to the driving end of the driving device (4), and the gear is meshed with the gear ring (312).
6. The water quality monitoring device for river channel environment management according to claim 5, wherein: the sealed lid includes sealed lid of one-level (311), sealed lid of second grade (321) and sealed lid of tertiary (331), the bottom of one-level sampler (31), second grade sampler (32) and tertiary sampler (33) is the echelonment, sealed lid of one-level (311), sealed lid of second grade (321) and sealed lid of tertiary (331) are the loop configuration, just sealed lid of one-level (311), sealed lid of second grade (321) and sealed lid of tertiary (331) respectively with the bottom one-to-one of one-level sampler (31), second grade sampler (32) and tertiary sampler (33).
7. The water quality monitoring device for river channel environment management according to claim 6, wherein: through-hole (35) has all been run through on the surface of one-level sealed lid (311), sealed lid of second grade (321) and tertiary seal lid (331), thief hole (34) have been seted up to the bottom of one-level sampler (31), sealed lid of second grade (32) and tertiary sampler (33), thief hole (34) and through-hole (35) dislocation set, between sealed lid of one-level (311) and the sealed lid of second grade (321) and equal fixedly connected with corrugated metal pipe (7) between sealed lid of second grade (321) and tertiary seal lid (331), two corrugated metal pipe (7) suit respectively outside second grade sampler (32) and tertiary sampler (33), and two corrugated metal pipe (7) are located the inboard of two thief hole (34) passageways respectively, connecting rod (8) are installed at the top of the sealed lid of one-level (311), the tip and the carrier mechanism connection of the sealed lid of one-level (311) are kept away from in connecting rod (8), the sealed lid of one-level (311) and one-level sampler (31) normal running fit, sealed lid (321) and secondary sampler (32) normal running fit, tertiary seal lid (331) and tertiary sampler (33).
8. The water quality monitoring device for river channel environment management according to claim 7, wherein: the carrier mechanism comprises a shell (1), an air bag (11) is sleeved on the outer side of the shell (1), a cavity is arranged inside the shell (1), a lifting cylinder (2) capable of being lifted is installed in the cavity, a primary sampler (31) is fixedly arranged in the lifting cylinder (2), a driving device (4) is fixedly installed on the inner wall of the lifting cylinder (2), and an air expansion shaft (5) is also fixedly installed in the lifting cylinder (2).
9. The water quality monitoring device for river channel environment management according to claim 8, wherein: driving piece (12) are installed at the inner chamber top of casing (1), the drive end of driving piece (12) is equipped with member (21), the top of casing (1) is run through to the one end of member (21), just the other end of member (21) and the top fixed connection of a lift section of thick bamboo (2).
10. A detection method of a water quality monitoring device for river channel environment management is characterized in that: comprises the following steps of (a) carrying out,
s1, establishing a water quality monitoring model, setting a color change color level of a solution after the solution with different substance concentrations reacts with a chromogenic reagent, then according to the color level of the solution with different substance concentrations, defining concentration gradients corresponding to the color levels of different colors as calibration, inputting the color calibration into a processing system, and editing a colorimetric program;
s2, collecting water sample water quality monitoring information, acquiring water samples of water layers with different depths in a water area to be detected by a first-stage sampler (31), a second-stage sampler (32) and a third-stage sampler (33) through multi-stage extension of a multi-stage sampling mechanism (3), adding equal color reagents into the water samples in the first-stage sampler (31), the second-stage sampler (32) and the third-stage sampler (33), respectively shooting water sample color pictures in the first-stage sampler (31), the second-stage sampler (32) and the third-stage sampler (33) by a camera unit, processing the water sample color pictures based on the monitored water samples in the first-stage sampler (31), the second-stage sampler (32) and the third-stage sampler (33) to obtain water sample color change image information, and transmitting the information to a processing system;
and S3, processing water sample water quality monitoring information, analyzing and comparing colors based on the color change image information of the water sample and the calibration made in advance to obtain a colorimetric result, outputting a water quality monitoring result, and uploading the water quality monitoring result to a database.
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