CN116481859B - Water quality sampling detection device and detection method - Google Patents
Water quality sampling detection device and detection method Download PDFInfo
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- CN116481859B CN116481859B CN202310462647.5A CN202310462647A CN116481859B CN 116481859 B CN116481859 B CN 116481859B CN 202310462647 A CN202310462647 A CN 202310462647A CN 116481859 B CN116481859 B CN 116481859B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 298
- 238000005070 sampling Methods 0.000 title claims abstract description 103
- 238000001514 detection method Methods 0.000 title claims abstract description 49
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 108091006146 Channels Proteins 0.000 description 55
- 238000000034 method Methods 0.000 description 6
- 230000003028 elevating effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000009360 aquaculture Methods 0.000 description 2
- 244000144974 aquaculture Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
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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
Abstract
The invention relates to the technical field of water quality detection, and particularly discloses a water quality sampling detection device and a detection method, wherein the water quality sampling detection device comprises a lifting mechanism and a sampling box, the lifting mechanism comprises a first moving block and a second moving block which can move up and down and have different moving speeds, a moving plate is arranged on the side part of the first moving block, the sampling box is arranged on the side part of the second moving block, the moving plate is positioned above the sampling box, a piston cavity and a plurality of multi-water-level acquisition chambers which are communicated with the piston cavity in one direction are formed in the sampling box, a sampling pipe which is communicated with the piston cavity is arranged at the bottom of the sampling box, a water taking hole which is communicated with the multi-water-level acquisition chambers is formed in the side part of the sampling box, and a water tank plug cover is arranged outside the water taking hole in a sealing manner; when the movable plate moves upwards, the air pressure in the piston cavity is negative pressure, the sampling pipe absorbs water, and the sampling box can collect and store different water samples independently when moving, so that the efficiency of collecting the water samples at multiple water levels is improved, and the time required by water sample detection is saved.
Description
Technical Field
The invention relates to the technical field of water quality detection, and particularly discloses a water quality sampling detection device and a detection method.
Background
The water quality sampling detection is an analysis method for collecting and detecting various substances in a water body so as to know the pollution condition and the water quality condition of the water body. The main reason for detecting the water quality by sampling the water quality at different water levels is that the water quality of the water body can be affected by a plurality of factors, such as oxygen content, water temperature, suspended substances, nutrient substances and the like. Under different water levels, the distribution and concentration of the factors are different, so that water samples under different water levels need to be collected and detected to comprehensively know the water quality condition of the water body. In addition, the influence of accidental factors can be eliminated through multiple sampling, and the accuracy and reliability of the detection result are improved.
In the aquaculture technology, the existing technology for detecting by using a sensor generally needs to arrange a water sample detection sensor in each cultivation area or sea area, and because the cost of the water sample detection sensor is high, a large amount of extra expenditure is inevitably added in a large-area cultivation farm, the production cost is greatly increased, and if the water bodies with different water levels are sampled and detected for a plurality of times, the water samples are required to be sampled for a plurality of times, and the time and the labor are wasted, and the operation is troublesome; therefore, the existing requirements are not met, and a water quality sampling detection device and a detection method are provided.
Disclosure of Invention
The invention provides a water quality sampling detection device and a water quality sampling detection method, which have the beneficial effects that the problems that the existing technology for detecting by using sensors in the background technology generally needs to arrange a water sample detection sensor in each cultivation area or sea area, and the water sample detection sensor has higher manufacturing cost, so that a large amount of extra expenditure is inevitably added in a large-area cultivation farm, the production cost is greatly increased, and if the water bodies with different water levels are sampled and detected for multiple times, the water bodies need to be sampled for multiple times, and the water sample detection device and the water sample detection method take time and labor and are troublesome to operate are solved.
The invention provides the following technical scheme: the utility model provides a quality of water sampling detection device, includes elevating system and sampling box, elevating system includes first movable block and the second movable block that can reciprocate and the velocity of movement is different, the movable plate is installed to the lateral part of first movable block, the sampling box is installed the lateral part of second movable block, the movable plate is located the top of sampling box, the sampling box inside offer the piston chamber with a plurality of many water level collection chambers of one-way intercommunication in piston chamber, sampling box bottom install with the sampling pipe of piston chamber intercommunication, the sampling box lateral part offer with the water intake hole of many water level collection chamber intercommunication to water intake hole external seal installs the water tank cock cap;
when the moving plate moves upwards, the air pressure in the piston cavity is negative pressure, and the sampling tube absorbs water.
As an alternative scheme of the water quality sampling detection device, the invention comprises the following steps: the multi-water-level sampling chamber comprises a water sample chamber arranged inside the sampling box, the outer side of the water sample chamber is connected with a water taking hole, the bottom end of the inner side of the water sample chamber is connected with a first water flow channel, the top end of the inner side of the water sample chamber is connected with a second water flow channel, the first water flow channel and the second water flow channel are communicated with the piston cavity, the section of the first water flow channel is L-shaped, the first water flow channel and the second water flow channel are crossed, a valve core is movably arranged at the joint, a spring is arranged on the inner wall of the sampling box, the spring is fixedly connected with the valve core, and a valve column is arranged in the first water flow channel in a gap matching mode.
As an alternative scheme of the water quality sampling detection device, the invention comprises the following steps: piston rod bottom fixed mounting has the piston piece, the piston piece sets up to the elastic block, the piston piece with the laminating of piston chamber interference slip.
As an alternative scheme of the water quality sampling detection device, the invention comprises the following steps: when the piston block is positioned between the first water flow channel and the second water flow channel, the first water flow channel is unblocked with the sampling pipe, water enters the first water flow channel, at the moment, the water pressure in the first water flow channel is larger than that in the second water flow channel, the valve core is forced to move upwards, the first water flow channel is unblocked with the water sample chamber, and the water enters the water sample chamber.
As an alternative scheme of the water quality sampling detection device, the invention comprises the following steps: when the piston block is positioned on the upper sides of the first water flow channel and the second water flow channel, the first water flow channel, the second water flow channel and the sampling tube are smooth, as the second water flow channel is positioned on the upper side of the first water flow channel, water body firstly fills the first water flow channel and the water sample chamber, when water body flows into the second water flow channel, the water pressure of the second water flow channel extrudes the valve core outwards, the valve core plugs the pipeline inlet of the water sample chamber, and a sealing chamber is formed inside the water sample chamber.
As an alternative scheme of the water quality sampling detection device, the invention comprises the following steps: the lifting mechanism further comprises a fixed machine block and a motor arranged on the upper side of the fixed machine block, a sliding rod with a scale bar on the surface is vertically arranged at the bottom of the fixed machine block, a first screw rod and a second screw rod are rotatably arranged at the bottom of the fixed machine block, the output end of the motor is connected with the first screw rod through a key, a driving wheel is arranged at the upper end part of the first screw rod, a driven wheel is arranged at the upper end part of the second screw rod, a transmission belt is sleeved on the outer side of the driving wheel and the outer side of the driven wheel together, and the first moving block and the second moving block are simultaneously slidably arranged on the outer side of the first screw rod, the second screw rod and the sliding rod.
As an alternative scheme of the water quality sampling detection device, the invention comprises the following steps: the first moving block is in sliding sleeve joint with the sliding rod, the first moving block is in threaded sleeve joint with the first screw rod at the same time, a first matching hole is formed in the first moving block, and the second screw rod penetrates through the first matching hole and is in clearance fit with the first screw rod; the second moving block is in sliding sleeve joint with the sliding rod, the second moving block is in threaded sleeve joint with the second screw rod at the same time, a second matching hole is formed in the second moving block, and the first screw rod penetrates through the second matching hole and is in clearance fit with the second matching hole.
As an alternative scheme of the water quality sampling detection device, the invention comprises the following steps: the lateral part fixed mounting of fixed machine piece has first prick the bank board, first prick bank board upper side slip block and install the second prick bank board, second prick bank board upper side slip block and install the third prick bank board.
The invention also discloses a water quality sampling and detecting method, which comprises the following specific steps:
s1, presetting preparation: selecting a representative sampling point, determining the water depth of a water sample to be collected, and selecting a first screw rod and a second screw rod which are the same in thickness and different in thread density to be installed in a lifting mechanism according to the water depth condition, or selecting the first screw rod and the second screw rod which are the same in thread but different in thickness to be installed in the lifting mechanism, so that a speed difference exists between the first moving block and the second moving block when the first moving block moves;
s2, installing sampling equipment: the first movable plate and the second movable plate are moved to the bottom end of the lifting mechanism, the third shore binding plate is fixed on the shore, the lifting mechanism is vertically fixed in water, and the first shore binding plate, the second shore binding plate and the third shore binding plate are fixed through locking pieces;
s3, collecting a water sample: starting a motor to drive a first moving plate and a second moving plate to move upwards, wherein the upward moving speed of the first moving plate is faster than that of the second moving plate due to the difference of the first screw rod and the second screw rod, so that a piston rod drives a piston block to move in a piston cavity of a collection box, and a sampling pipe is utilized to suck water body at the water level into the collection box;
s4, taking out a water sample: the first movable plate and the second movable plate continuously move upwards until the water collecting box leaks out of the water surface, the container is placed at the bottom side of the water taking hole, the water tank plug cover is opened, and collected water flows into the container from the water taking hole.
As an alternative scheme of the water quality sampling detection method, the invention comprises the following steps: in S3, the moving speed of the collecting box is recorded according to the scale bars on the sliding rod, and the real moving speed of the collecting box is calculated, so that the water level of the water sample source in each multi-water-level collecting chamber is obtained.
The invention has the following beneficial effects:
1. according to the water quality sampling detection device and the water quality sampling detection method, the motor drives the first moving block and the second moving block to move up and down, so that the sampling box and the moving plate move up and down, the first moving block and the second moving block have different moving speeds due to different specifications of the first screw rod and the second screw rod, the sampling box moves up from the bottom when a water sample is collected, and the moving plate drives the piston rod and the piston block to move up due to faster moving speed of the moving plate, so that the piston block slides up relative to the piston cavity, negative pressure is generated in the piston cavity, and water enters the piston cavity from the sampling pipe;
the water body enters the first water flow channel, the valve core is jacked up to flow into the water sample chamber, and the valve core is jacked up after the water body enters the second water flow channel, so that the valve core plugs the pipe orifice of the water sample chamber, the inside of the water sample chamber is sealed, and the sucked water body cannot flow out in a countercurrent mode;
through the cooperation of elevating system and many water levels collection room, the collecting box can rise to different water levels to can be with the water sample collection of different water levels and save alone when removing, improve the efficiency of many water levels collection water sample, save the required time of water sample detection.
2. According to the water quality sampling detection device and the detection method, through the cooperation of the water taking hole and the water tank plug cover, when the water tank plug cover is in sealing installation with the collection box, a sealing space can be formed inside the water sample chamber, and when the water sample collection is completed, the water tank plug cover can be directly opened, water samples with different water levels in a plurality of multi-water-level collection chambers are respectively taken out from the side part of the collection box, and the water quality sampling detection device is simple in structure and convenient to operate.
3. According to the water quality sampling detection device and the water quality sampling detection method, the detection device can be fixed in water by using the cooperation of the first shore plate, the second shore plate and the third shore plate, water sample collection can be carried out at intervals in aquaculture, collection points are the same, collection time is different, the comparison difference value of collection results is more obvious, compared with the use of a sensor, the cost is lower, and the culture cost is reduced.
Drawings
Fig. 1 is a schematic diagram of a three-dimensional structure before sampling according to the present invention.
Fig. 2 is a schematic diagram of a three-dimensional structure in a sample according to the present invention.
Fig. 3 is a schematic cross-sectional view of the present invention.
FIG. 4 is a schematic cross-sectional view of a portion of the present invention prior to work.
FIG. 5 is a schematic view of a part of a cross-sectional structure of the present invention when doing work.
Fig. 6 is an enlarged schematic view of the structure of the present invention at a.
Fig. 7 is an enlarged schematic view of the structure of the present invention at B.
In the figure: 100. a lifting mechanism; 110. fixing the machine block; 120. a first moving block; 130. a second moving block; 140. a slide bar; 141. a scale bar; 150. a first screw rod; 160. a second screw rod; 170. a first mating hole; 180. a second mating hole; 190. a motor; 191. a fixing plate; 192. a driving wheel; 193. a driving wheel; 194. a transmission belt; 210. a first shore binding plate; 220. a second shore binding plate; 230. a third shore binding plate; 310. a moving plate; 320. a sampling box; 330. a piston rod; 340. a piston block; 350. a piston chamber; 360. a sampling tube; 370. a water intake hole; 380. a water tank plug cover; 390. a multi-water level collection chamber; 391. a first water flow passage; 392. a second water flow passage; 393. a water sample chamber; 394. a spool; 395. a valve core; 396. and (3) a spring.
Description of the embodiments
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
The embodiment aims to solve the problems that if multiple sampling and detection are needed for water bodies with different water levels, multiple sampling is needed, time and labor are wasted and operation is troublesome, referring to fig. 1-7, a water quality sampling and detecting device and method are disclosed, the water quality sampling and detecting device comprises a lifting mechanism 100 and a sampling box 320, the lifting mechanism 100 comprises a first moving block 120 and a second moving block 130 which can move up and down and have different moving speeds, the side part of the first moving block 120 is provided with a moving plate 310, the sampling box 320 is arranged at the side part of the second moving block 130, the moving plate 310 is positioned above the sampling box 320, a piston cavity 350 and a plurality of multi-water-level collecting chambers 390 which are communicated with the piston cavity 350 in a one-way are arranged in the sampling box 320, a sampling tube 360 which is communicated with the piston cavity 350 is arranged at the bottom of the sampling box 320, a water taking hole 370 which is communicated with the multi-water-level collecting chambers 390 is arranged at the side part of the sampling box 320, and a water tank plug cover 380 is arranged outside the water taking hole 370 in a sealing way;
when the moving plate 310 moves upward, the air pressure in the piston chamber 350 is negative pressure and the sampling tube 360 absorbs water.
When specifically setting, see fig. 2, elevating system 100 still includes fixed machine block 110 and installs motor 190 in fixed machine block 110 upside, the vertical slide bar 140 that installs on surface has scale bar 141 in bottom of fixed machine block 110, first lead screw 150 and second lead screw 160 are installed in the bottom rotation of fixed machine block 110, the output and the first lead screw 150 key-connection of motor 190, drive wheel 192 is installed to the upper end of first lead screw 150, the upper end of second lead screw 160 is installed the follower, drive wheel 192 and the common cover in outside of follower are equipped with drive belt 194, first movable block 120 and second movable block 130 slidable mounting is in the outside of first lead screw 150, second lead screw 160 and slide bar 140 simultaneously.
Referring to fig. 3, the first moving block 120 is slidably sleeved with the sliding rod 140, the first moving block 120 is simultaneously in threaded sleeve connection with the first screw rod 150, a first matching hole 170 is formed in the first moving block 120, and the second screw rod 160 passes through the first matching hole 170 and is in clearance fit with the first screw rod 150; the second moving block 130 is in sliding sleeve connection with the sliding rod 140, the second moving block 130 is in threaded sleeve connection with the second screw rod 160 at the same time, a second matching hole 180 is formed in the second moving block 130, and the first screw rod 150 penetrates through the second matching hole 180 and is in clearance fit with the second screw rod 160. The first moving block 120 and the second moving block 130 use the same motor 190 and the same slide bar 140, but the moving speeds thereof are different.
The side of the fixed machine block 110 is fixedly provided with a first shore plate 210, a second shore plate 220 is arranged on the upper side sliding block of the first shore plate 210, and a third shore plate 230 is arranged on the upper side sliding block of the second shore plate 220.
Referring to fig. 4 to 7, the multi-water level sampling chamber includes a water sample chamber 393 formed inside the sampling tank 320, the outside of the water sample chamber 393 is connected with a water intake 370, the bottom end of the inside of the water sample chamber 393 is connected with a first water flow channel 391, the top end of the inside of the water sample chamber 393 is connected with a second water flow channel 392, the first water flow channel 391 and the second water flow channel 392 are both communicated with the piston cavity 350, the cross section of the first water flow channel 391 is L-shaped, the first water flow channel 391 and the second water flow channel 392 are crossed, a valve core 395 is movably arranged at the joint, a spring 396 is mounted on the inner wall of the sampling tank 320, the spring 396 is fixedly connected with the valve core 395, and a valve column 394 is mounted in clearance matching inside the first water flow channel 391.
Piston rod 330 bottom fixed mounting has piston 340, and piston 340 sets up to elastic rubber piece, and piston 340 and piston cavity 350 interference slip laminating.
In this embodiment: the motor 190 drives the first moving block 120 and the second moving block 130 to move up and down, so that the collection box 320 and the moving plate 310 move up and down, the moving speeds of the first moving block 120 and the second moving block 130 are different due to different specifications of the first screw rod 150 and the second screw rod 160, the collection box 320 moves up from the bottom when collecting water samples, and the moving plate 310 drives the piston rod 330 and the piston block 340 to move up due to faster moving speed of the moving plate 310, so that the piston block 340 slides up relative to the piston cavity 350, negative pressure is generated inside the piston cavity 350, and water enters the piston cavity 350 from the sampling tube 360.
When the first water flow channel 391 is blocked by the piston block 340 or the piston block 340 is positioned below the first water flow channel 391, the valve core 395 is contacted with the valve stem 394 by the pressure of the spring 396, and the space between the first water flow channel 391 and the water sample chamber 393 is blocked by the valve core 395.
Examples
The present embodiment is intended to facilitate solving the problems of multiple sampling, time and effort consuming and troublesome operations in the prior art if multiple sampling and detection are required for water bodies with different water levels are adopted, and the present embodiment is an improvement made on the basis of embodiment 1, specifically, please refer to fig. 1 to 7, when the piston block 340 is located between the first water flow channel 391 and the second water flow channel 392, the space between the first water flow channel 391 and the sampling tube 360 is unblocked, the water body enters the first water flow channel 391, at this time, the water pressure in the first water flow channel 391 is greater than the water pressure in the second water flow channel 392, the valve core 395 is forced to move upwards, the first water flow channel 391 and the water sample chamber 393 are unblocked, and the water body enters the water sample chamber 393.
The first water flow channel 391, the second water flow channel 392, the spool 394 and the valve core 395 are combined together into a one-way valve, and water can enter the water sample chamber 393 from the first water flow channel 391 but cannot flow reversely.
Examples
In this embodiment, the improvement is made on the basis of embodiment 1, unlike embodiment 2, referring to fig. 7, when the piston block 340 is located on the upper sides of the first water flow channel 391 and the second water flow channel 392, the first water flow channel 391, the second water flow channel 392 and the sampling tube 360 are all clear, because the second water flow channel 392 is located on the upper side of the first water flow channel 391, the water body firstly fills the first water flow channel 391 and the water sample chamber 393, when the water body flows into the second water flow channel 392, the water pressure of the second water flow channel 392 presses the valve core 395 outwards, the valve core 395 blocks the pipeline inlet of the water sample chamber 393, so that the blocking of the inlet of the water sample chamber 393 is further enhanced, and a sealed chamber is formed inside the water sample chamber 393.
Examples
The scheme also provides a water quality sampling detection method, which comprises the following specific steps:
s1, presetting preparation: selecting a representative sampling point, determining the water depth of a water sample to be collected, and selecting a first screw rod 150 and a second screw rod 160 with the same thickness and different screw thread densities to be installed in the lifting mechanism 100 according to the water depth condition, or selecting the first screw rod 150 and the second screw rod 160 with the same screw thread but different thickness to be installed in the lifting mechanism 100, so that the speed difference exists between the first moving block 120 and the second moving block 130 when moving;
s2, installing sampling equipment: the first moving plate 310 and the second moving plate 310 are moved to the bottom end of the lifting mechanism 100, the third shore tying plate 230 is fixed on the shore, the lifting mechanism 100 is vertically fixed in water, and the first shore tying plate 210, the second shore tying plate 220 and the third shore tying plate 230 are fixed through locking pieces;
s3, collecting a water sample: starting the motor 190 to drive the first moving plate 310 and the second moving plate 310 to move upwards, wherein the upward moving speed of the first moving plate 310 is faster than that of the second moving plate 310 due to the difference between the first screw rod 150 and the second screw rod 160, so that the piston rod 330 drives the piston block 340 to move in the piston cavity 350 of the collecting box, and the water body at the water level is sucked into the collecting box by using the sampling pipe;
s4, taking out a water sample: after the first moving plate 310 and the second moving plate 310 continue to move up until the collecting tank leaks out of the water surface, the container is placed on the bottom side of the water intake hole 370, the water tank plug 380 is opened, and the collected water flows into the container from the water intake hole 370.
In S3, the actual moving speed of the collection box is calculated according to the moving speed of the collection box recorded by the scale bar 141 on the slide bar 140, thereby obtaining the water level height of the water sample source in each multi-water level collection chamber 390.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (6)
1. A water quality sampling detection device is characterized in that: the water sampling device comprises a lifting mechanism (100) and a sampling box (320), wherein the lifting mechanism (100) comprises a first moving block (120) and a second moving block (130) which can move up and down and have different moving speeds, a first screw rod (150) and a second screw rod (160) which are the same in thickness and different in screw thread density are selected to be installed in the lifting mechanism (100), or the first screw rod (150) and the second screw rod (160) which are the same in screw thread but different in thickness are selected to be installed in the lifting mechanism (100), a moving plate (310) is installed on the side part of the first moving block (120), the sampling box (320) is installed on the side part of the second moving block (130), the moving plate (310) is positioned above the sampling box (320), a piston cavity (350) and a plurality of water level collecting chambers (390) which are in one-way communicated with the piston cavity (350) are arranged inside the sampling box (320), a sampling box (360) which is communicated with the piston cavity (350) is installed at the bottom, a sampling box (320) is provided with a water level collecting plug (370) which is provided with a water level collecting plug (370), and the water level collecting plug (370) is provided with a sealing hole (370); when the moving plate (310) moves upwards, the air pressure in the piston cavity (350) is negative pressure, and the sampling tube (360) absorbs water; the multi-water-level collection chamber (390) comprises a water sample chamber (393) arranged in the sampling box (320), the outer side of the water sample chamber (393) is connected with a water taking hole (370), a first water flow channel (391) is connected to the bottom end of the inner side of the water sample chamber (393), a second water flow channel (392) is connected to the top end of the inner side of the water sample chamber (393), the first water flow channel (391) and the second water flow channel (392) are communicated with the piston cavity (350), the cross section of the first water flow channel (391) is L-shaped, the first water flow channel (391) and the second water flow channel (392) are cross-shaped, a valve core (395) is movably arranged at the joint, a spring (396) is arranged on the inner wall of the sampling box (320), and the spring (396) is fixedly connected with the valve core (395), and a valve column (394) is arranged in a gap matching mode in the first water flow channel (391). The lifting mechanism (100) further comprises a fixed machine block (110) and a motor (190) arranged on the upper side of the fixed machine block (110), a sliding rod (140) with a scale bar (141) on the surface is vertically arranged at the bottom of the fixed machine block (110), a first screw rod (150) and a second screw rod (160) are rotatably arranged at the bottom of the fixed machine block (110), the output end of the motor (190) is in key connection with the first screw rod (150), a driving wheel (192) is arranged at the upper end of the first screw rod (150), a driven wheel is arranged at the upper end of the second screw rod (160), a transmission belt (194) is sleeved on the outer sides of the driving wheel (192) and the driven wheel together, and the first moving block (120) and the second moving block (130) are simultaneously and slidably arranged on the outer sides of the first screw rod (150), the second screw rod (160) and the sliding rod (140); the first moving block (120) is in sliding sleeve joint with the sliding rod (140), the first moving block (120) is in threaded sleeve joint with the first screw rod (150) at the same time, a first matching hole (170) is formed in the first moving block (120), and the second screw rod (160) penetrates through the first matching hole (170) and is in clearance fit with the first screw rod (150); the second moving block (130) is in sliding sleeve joint with the sliding rod (140), the second moving block (130) is in threaded sleeve joint with the second screw rod (160) at the same time, a second matching hole (180) is formed in the second moving block (130), and the first screw rod (150) penetrates through the second matching hole (180) and is in clearance fit with the second screw rod (160); the piston rod (330) is arranged at the bottom end of the moving plate (310), the piston block (340) is fixedly arranged at the bottom end of the piston rod (330), the piston block (340) is arranged as an elastic block, and the piston block (340) is in interference sliding fit with the piston cavity (350).
2. The water sampling test device of claim 1, wherein: when piston piece (340) are located between first rivers passageway (391) and second rivers passageway (392), first rivers passageway (391) with unblocked between sampling tube (360), the water gets into in first rivers passageway (391), at this moment water pressure in first rivers passageway (391) is greater than the water pressure of second rivers passageway (392), case (395) atress moves up, first rivers passageway (391) with water sample room (393) unblocked, the water gets into in water sample room (393).
3. The water sampling test device of claim 2, wherein: when piston piece (340) are located first rivers passageway (391) with second rivers passageway (392) upside, first rivers passageway (391) second rivers passageway (392) with sampling pipe (360) are all unblocked, because second rivers passageway (392) are in the upside of first rivers passageway (391), water is first abundant first rivers passageway (391) in water sample room (393), when the water flows into in second rivers passageway (392), the water pressure of second rivers passageway (392) will case (395) are outwards extruded, case (395) will the pipeline entry of water sample room (393) is plugged up, the inside sealed cavity that forms of water sample room (393).
4. A water sampling test device according to claim 3, wherein: the side part of the fixed machine block (110) is fixedly provided with a first shore plate (210), a second shore plate (220) is installed on the upper side sliding clamping of the first shore plate (210), and a third shore plate (230) is installed on the upper side sliding clamping of the second shore plate (220).
5. A detection method of a water quality sampling detection device according to claim 4, comprising the following specific steps:
s1, presetting preparation: selecting a representative sampling point, determining the water depth of a water sample to be collected, and selecting a first screw rod (150) and a second screw rod (160) which are the same in thickness and different in screw thread density to be installed in a lifting mechanism (100) according to the water depth condition, or selecting the first screw rod (150) and the second screw rod (160) which are the same in screw thread but different in thickness to be installed in the lifting mechanism (100), so that a speed difference exists between a first moving block (120) and a second moving block (130) when the first moving block and the second moving block are moved;
s2, installing sampling equipment: the first moving block (120) and the second moving block (130) are moved to the bottom end of the lifting mechanism (100), the third shore binding plate (230) is fixed on the shore, the lifting mechanism (100) is vertically fixed in water, and the first shore binding plate (210), the second shore binding plate (220) and the third shore binding plate (230) are fixed through locking pieces;
s3, collecting a water sample: starting a motor (190) to drive a first moving block (120) and a second moving block (130) to move upwards, wherein the upward moving speed of the first moving block (120) is faster than that of the second moving block (130) due to the difference between a first screw rod (150) and a second screw rod (160), so that a piston rod (330) drives a piston block (340) to move in a piston cavity (350) of a collection box, and a water body of the water level is sucked into the collection box by using the sampling pipe;
s4, taking out a water sample: after the first moving block (120) and the second moving block (130) continuously move upwards until the water collecting box leaks out of the water surface, the container is placed at the bottom side of the water taking hole (370), the water tank plug cover (380) is opened, and collected water flows into the container from the water taking hole (370).
6. The water quality sampling detection method according to claim 5, wherein: in S3, the real moving speed of the collecting box is calculated according to the moving speed of the collecting box recorded by the scale bar (141) on the slide bar (140), so that the water level of the water sample source in each multi-water-level collecting chamber (390) is obtained.
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