CN103983479A - Drawer type portable slope runoff sampler and sampling method thereof - Google Patents
Drawer type portable slope runoff sampler and sampling method thereof Download PDFInfo
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- CN103983479A CN103983479A CN201410237262.XA CN201410237262A CN103983479A CN 103983479 A CN103983479 A CN 103983479A CN 201410237262 A CN201410237262 A CN 201410237262A CN 103983479 A CN103983479 A CN 103983479A
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Abstract
The invention relates to a drawer type portable slope runoff sampler and a sampling method thereof. The sampler consists of a water storage device and a collection device, wherein the water storage device comprises a water tank and a stirrer; a flow sensor is arranged at a water inlet of the water tank; the collection device comprises a box seat and a box cover; a distribution pipe valve group in sliding fit is arranged on an electric lead screw guide rail in the box cover; drawers in which multiple rows of built-in sampling bottles are arranged are arranged in the box seat; a row of water injection nozzles of the distribution pipe valve group is aligned with openings of any row of sampling bottles in the drawers; the water tank is connected to a peristaltic pump through a guide tube; the peristaltic pump is connected to the distribution pipe valve group through the guide tube; the flow sensor, a stirring motor of the stirrer, a driving motor of the electric lead screw guide rail, the distribution pipe valve group and a driving motor of the peristaltic pump are electrically connected to a control device. According to the sampler, effects of saving manual labor, conveniently collecting and monitoring in real time are achieved, the water sample collection reliability and accuracy are guaranteed, and the water quality conditions are conveniently and accurately judged.
Description
Technical field
The present invention relates to the portable sheet flow sampler of a kind of drawer type and the method for sampling thereof, belong to slope runoff Sampling techniques field.
Background technology
At present, manual artificial sample is mainly taked for the sampling of slope runoff in Chinese most of areas, and condition of work is poor, and inefficiency, and error is larger can not realize the information such as water yield size, speed speed of real time record slope runoff.Although some company has released part water-quality sampler both at home and abroad at present, but existing water-quality sampler can not meet the sampling request of slope runoff, and ubiquity heaviness is not portable, manufacturing cost is high, sampling pattern is single and the shortcoming such as the built-in and inconvenient extraction of sampling bottle and placement.Most of sampling thief adopts peristaltic pump to connect rotating head and feeds water, and they exist some sealing problems and corrosion problems.In addition, existing collector only has collecting part, and function singleness is not suitable for intellegent sampling.
Summary of the invention
In order to overcome the drawback of existing water-quality sampler, the object of the present invention is to provide be a kind ofly convenient for carrying, automatically, sampling pattern can be according to the actual flow size portable sheet flow sampler of self-adjusting drawer type and the method for sampling thereof, to reach, save manpower, gather effect convenient, Real-Time Monitoring, guarantee reliability and the accuracy of water sampling, be convenient to correctly judge water quality condition.
To achieve these goals, the technical solution used in the present invention one is: the portable sheet flow sampler of a kind of drawer type, by water-storing device and harvester, formed, described water-storing device comprises the tank being arranged on support frame and is arranged on the stirrer in tank, the motor of toppling over that drives tank rotary dumping is also installed on described support frame, the water inlet of described tank is provided with flow sensor, and level sensor is also installed in described tank; Described harvester comprises block and is positioned at the case lid directly over block, electronic screw mandrel guide rail is installed in described case lid, the distributing pipe valve sets that square crossing is installed and is slidably matched on described electronic screw mandrel guide rail, in described block, be provided with the drawer of built-in many row's sampling bottles, row's water filling mouth of pipe of described distributing pipe valve sets is aimed at the arbitrary mining sample bottleneck in drawer; The water delivering orifice of described tank is connected to the import of peristaltic pump through external water delivery conduit, described wriggling delivery side of pump is connected to the import of distributing pipe valve sets through built-in water delivery conduit, described flow sensor, level sensor, topple over the stirring motor of motor, stirrer, the drive motor of electronic screw mandrel guide rail, the solenoid valve of distributing pipe valve sets and the drive motor of peristaltic pump are all electrically connected to control device.
Further, described in topple over motor, stirring motor and peristaltic pump drive motor be all furnished with the power source of being controlled break-make by control device, described power source is battery or external power supply.
Further, described control device is the single-chip microcomputer being arranged in control box, and described control box is arranged in case lid.
Further, described control device is electrically connected with IO interface, memory cards, wireless communication module, switch governor module, power module and display module.
Further, described peristaltic pump is arranged on case lid.
Further, the upper and lower releasable connection of described case lid and block, described support frame and the releasable connection of block left and right.
Further, described block is provided with the fair water fin that is positioned at drawer top, is distributed with a plurality of funnel holes that lead to respectively corresponding sampling bottle on described fair water fin.
Further, described block bottom side is provided with universal wheel, and described block front side is provided with pumping rod.
Further, before and after described drawer, side is provided with handle.
To achieve these goals, the technical solution used in the present invention two is: a kind of slope runoff method of sampling, adopts the portable sheet flow sampler of drawer type as above, and carry out according to the following steps:
(1) after the rainwater on domatic flows down, with a drainage catheter, introduce in tank, flow sensor detects rainwater flow, and sends flow signal to control device;
(2) when rainwater enters after tank, control device starts stirrer, and stirring motor drive impeller, makes the rainwater that contains silt obtain uniform stirring, for the rainwater that follow-up peristaltic pump pumps is evenly distributed is prepared;
(3) when the water in tank reaches set amount, control device starts peristaltic pump, peristaltic pump is drawn the water in tank by external water delivery conduit, by built-in water delivery conduit, send gathering the water coming into distributing pipe valve sets, after being drawn onto the water yield of filling a sampling bottle, just stop water suction, start and topple over motor, remaining rainwater is outwelled, avoid remaining the sampling precision that rainwater affects next sampling bottle;
(4) control device moves to distributing pipe valve sets by electronic screw mandrel guide rail the top of first row sampling bottleneck, waits for water filling; Control device is opened the solenoid valve of distributing pipe valve sets successively singly, and each sampling bottle is carried out to water filling successively; After upper row's water filling finishes, electronic screw mandrel guide rail moves to distributing pipe valve sets the top of next row sampling bottleneck, again carries out water filling; By that analogy, until after all sampling bottles collections of drawer, by drawer pull out, sampling bottle is all taken out, change sky sampling bottle, continue sampling.
Compared with prior art, the present invention has following remarkable advantage: the portable sheet flow sampler of this drawer type can be realized the function of water level detecting in rainwater flow detection and tank by flow sensor and level sensor, by stirrer with topple over motor and can realize the function that silt in rainwater was uniformly distributed and toppled over residue ponding, by by drawer, the convenient device of drawer type that block and case lid form is realized convenient carrying, the function of taking-up and the placement of sampling bottle is convenient in block separation, region and the time restriction of artificial sample have been overcome, round-the-clock full-automatic sampling is carried out in the place that is movable to required sampling, highly versatile, and reach saving manpower, gather conveniently, obtain the object that water sample is convenient, guarantee collection water sample accuracy, whole compact equipment, coordinates closely, and good airproof performance contributes to the carrying out of rainfall detection and research soil and water conservation work.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Accompanying drawing explanation
Fig. 1 is that the master of the embodiment of the present invention looks schematic diagram.
Fig. 2 is the schematic perspective view of the embodiment of the present invention.
Fig. 3 is the structural representation of water-storing device.
Fig. 4 is the structural representation after block assembling.
Fig. 5 is the structural representation after case lid assembling.
In figure: 1-tank, 2-support frame, the external water delivery conduit of 3-, 4-peristaltic pump, the built-in water delivery conduit of 5-, 6-case lid, the electronic screw mandrel guide rail of 7-, the drive motor of the electronic screw mandrel guide rail of 71-, 8-distributing pipe valve sets, 9-fair water fin, 10-drawer, 101-handle, 11-block, 12-sampling bottle, 13-control box, 14-impeller.
Embodiment
As shown in Fig. 1 ~ 5, the portable sheet flow sampler of a kind of drawer type, by water-storing device and harvester, formed, described water-storing device comprises the tank 1 being arranged on support frame 2 and is arranged on the stirrer in tank 1, the motor of toppling over that drives tank 1 rotary dumping is also installed on described support frame 2, the water inlet of described tank 1 is provided with flow sensor, in described tank 1, level sensor is also installed; Described harvester comprises block 11 and is positioned at the case lid 6 directly over block 11, electronic screw mandrel guide rail 7 is installed in described case lid 6, the distributing pipe valve sets 8 that square crossing is installed and is slidably matched on described electronic screw mandrel guide rail 7, in described block 11, be provided with the drawer 10 of built-in many row's sampling bottles 12,12 mouthfuls of the arbitrary row's sampling bottles in row's water filling mouth of pipe aligning drawer 10 of described distributing pipe valve sets 8; The water delivering orifice of described tank 1 is connected to the import of peristaltic pump 4 through external water delivery conduit 3, the outlet of described peristaltic pump 4 is connected to the import of distributing pipe valve sets 8 through built-in water delivery conduit 5, described flow sensor, level sensor, topple over the stirring motor of motor, stirrer, the solenoid valve of the drive motor 71 of electronic screw mandrel guide rail 7, distributing pipe valve sets 8 and the drive motor of peristaltic pump 4 are all electrically connected to control device.
In the present embodiment, in order to prevent getting rusty and corrosion, described support frame 2 adopts the materials such as stainless steel to make.In order to prevent into water, the drive motor outside seal of described peristaltic pump 4, described peristaltic pump 4 is screwed and is arranged on case lid 6, while needing, can dismantle.It is half-cylindrical that described tank 1 is, and described stirrer is comprised of stirring motor and impeller 14.Take that to collect 24 bottles of water be example, in described drawer 10, with 4 * 6 array way, place the rectangles of 24 sampling bottles, 12, six row's four row, can make compact equipment, be easy to carry.Described distributing pipe valve sets 8 is comprised of nut, distributing pipe and solenoid valve, described distributing pipe top has formed ball guide screw nat by the screw mandrel of nut and electronic screw mandrel guide rail 7, described distributing pipe bottom have four openings of a row towards water injection pipe, each water injection pipe is furnished with respectively the independent solenoid valve of controlling, and controls respectively it open and shut off to realize the water sampling to different sampling bottles 12 by control device; It is driven and is moved forward and backward by electronic screw mandrel guide rail 7, can accurately valve port be moved to sampling bottle 12 tops of required sampling, and described electronic screw mandrel guide rail 7 is comprised of drive motor 71, screw mandrel and two symmetrical guide rails.
In the present embodiment, described drive motor of toppling over motor, stirring motor and peristaltic pump 4 is all furnished with the power source of being controlled break-make by control device, described power source is battery or external power supply, use extensively, working stability, such as self-contained batteries such as accumulators, accumulator can be used in conjunction with solar panels out of doors.Described control device is the single-chip microcomputer being arranged in control box 13, can also be the controllers such as PLC certainly; Described Single-chip Controlling peristaltic pump 4 gathers to realize regularly (or quantitatively), described single-chip microcomputer is controlled electronic screw mandrel guide rail 7 each water filling mouth of pipe of distributing pipe valve sets 8 is accurately delivered to above corresponding each sampling bottle 12 before peristaltic pump 4 draws water, and then starts to draw water.Described control box 13 is arranged at the middle part of case lid 6, described control box 13 use seal cap sealings, and 24V on-vehicle battery can be equipped with in inside, and is furnished with USB interface, for accessing other available portable power source.
In the present embodiment, described control device is electrically connected with IO interface, memory cards, wireless communication module, switch governor module, power module and display module, for example WiFi wireless launcher, start stop switch, speed governing knob, external power supply plug, display screen, program input port, can realize the change of sample rate adjusting, external power supply, the demonstration of internal battery electric weight, mode of operation demonstration and mode of operation program.By control box 13, just can realize the real time record to equipment set, also can determine as required whether to utilize WiFi technology to realize wireless transmission simultaneously, or utilize memory cards to carry out record data, for sampling bottle 12, all gather and finish rear taking-up analysis data.
In the present embodiment, for major equipment in convenient inspection case lid 6, described case lid 6 and block releasable connection Shang Xia 11, the two can be separated; Described support frame 2 and block 11 left and right releasable connections, for example, with screw combination and fixing, can split use while needing.For the ease of the movement of whole device with carry, described block 11 bottom sides can be provided with universal wheel, described block 11 front sides can be provided with pumping rod.In order to prevent that current from spilling, described block 11 is provided with the fair water fin 9 that is positioned at drawer 10 tops, described fair water fin 9 can split, on described fair water fin 9, be distributed with a plurality of funnel holes that lead to respectively corresponding sampling bottle 12, be conducive to the importing of current, the concrete number of described funnel hole can be set according to actual needs.For convenient carrying, described drawer 10 front and back sides are provided with handle 101, handle 101 by front side can be by drawer 10 pulls to completely separated with block 11, the handle 101 of rear side is built on drawer 10 inwalls, need the used time directly to break available, both be convenient to taking-up and the placement of sampling bottle 12, also facilitated the carrying of drawer 10.
As shown in Fig. 1 ~ 5, a kind of slope runoff method of sampling, adopts the portable sheet flow sampler of drawer type as above, and carries out according to the following steps:
(1) after the rainwater on massif etc. is domatic flows down, with a drainage catheter, rainwater is introduced in tank 1, rainwater is flowing into the front detection of first passing through flow sensor of tank 1, flow sensor detects rainwater flow, and send flow signal to control device, for which kind of sampling pattern subsequent control device starts automatically, prepare;
(2) when rainwater enters after tank 1, control device starts stirrer, and stirring motor drive impeller 14, makes the rainwater that contains silt obtain uniform stirring, for follow-up peristaltic pump 4 extracts the rainwater being evenly distributed, prepares;
(3) when the water in tank 1 reaches set amount (being detected by level sensor), control device starts peristaltic pump 4, the water that peristaltic pump 4 is drawn in tank 1 by external water delivery conduit 3, by built-in water delivery conduit 5, send gathering the water coming into distributing pipe valve sets 8, after being drawn onto the water yield of filling a sampling bottle 12, just stop water suction, start and topple over motor, remaining rainwater is outwelled, avoid remaining the sampling precision that rainwater affects next sampling bottle 12;
(4) control device moves to distributing pipe valve sets 8 by electronic screw mandrel guide rail 7 top of 12 mouthfuls of first row sampling bottles, waits for water filling; Control device is opened the solenoid valve of distributing pipe valve sets 8 successively singly, and each sampling bottle 12 is carried out to water filling successively; After upper row's water filling finishes, electronic screw mandrel guide rail 7 moves to distributing pipe valve sets 8 top of 12 mouthfuls of next row sampling bottles, again carries out water filling; By that analogy, until after all sampling bottles 12 collections of drawer 10, can in the situation that not opening whole sampling thief by drawer 10 pulls out sampling bottle 12 all be taken out, change sky sampling bottle 12, continue sampling.
The present invention can realize intelligence and automatically select sampling pattern, and it utilizes flow sensor to record the size of slope runoff, automatically selects which kind of sampling pattern, such as sampling on time, by sampling patterns such as traffic samplings; Can determine collection mode, be once to collect one bottle, still collects several times one bottle.
In addition, harvester of the present invention bottom can sensor checkout equipment, for detecting in real time some required related datas, and be recorded to data real time record can be kept in built-in memory card, can also realize real-time radio by wireless communication module and transmit simultaneously.For example, can gravity sensor be installed in block 11 bottoms, the quality containing for detection of one bottle of water sample, this quality can be used for subsequent calculations and goes out the quantity of sand and mud containing in this bottle of water, substitute and must bring back at present the step that use for laboratory sky equality instrument carrys out sense weight, facilitated the content that calculates silt in rainwater.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. the portable sheet flow sampler of drawer type, by water-storing device and harvester, formed, it is characterized in that: described water-storing device comprises the tank being arranged on support frame and is arranged on the stirrer in tank, the motor of toppling over that drives tank rotary dumping is also installed on described support frame, the water inlet of described tank is provided with flow sensor, and level sensor is also installed in described tank; Described harvester comprises block and is positioned at the case lid directly over block, electronic screw mandrel guide rail is installed in described case lid, the distributing pipe valve sets that square crossing is installed and is slidably matched on described electronic screw mandrel guide rail, in described block, be provided with the drawer of built-in many row's sampling bottles, row's water filling mouth of pipe of described distributing pipe valve sets is aimed at the arbitrary mining sample bottleneck in drawer; The water delivering orifice of described tank is connected to the import of peristaltic pump through external water delivery conduit, described wriggling delivery side of pump is connected to the import of distributing pipe valve sets through built-in water delivery conduit, described flow sensor, level sensor, topple over the stirring motor of motor, stirrer, the drive motor of electronic screw mandrel guide rail, the solenoid valve of distributing pipe valve sets and the drive motor of peristaltic pump are all electrically connected to control device.
2. the portable sheet flow sampler of drawer type according to claim 1, it is characterized in that: described in topple over motor, stirring motor and peristaltic pump drive motor be all furnished with the power source of being controlled break-make by control device, described power source is battery or external power supply.
3. the portable sheet flow sampler of drawer type according to claim 1, is characterized in that: described control device is the single-chip microcomputer being arranged in control box, and described control box is arranged in case lid.
4. according to the portable sheet flow sampler of the drawer type described in claim 1 or 8, it is characterized in that: described control device is electrically connected with IO interface, memory cards, wireless communication module, switch governor module, power module and display module.
5. the portable sheet flow sampler of drawer type according to claim 1, is characterized in that: described peristaltic pump is arranged on case lid.
6. the portable sheet flow sampler of drawer type according to claim 1, is characterized in that: the upper and lower releasable connection of described case lid and block, described support frame and the releasable connection of block left and right.
7. the portable sheet flow sampler of drawer type according to claim 1, is characterized in that: described block is provided with the fair water fin that is positioned at drawer top, is distributed with a plurality of funnel holes that lead to respectively corresponding sampling bottle on described fair water fin.
8. the portable sheet flow sampler of drawer type according to claim 1, is characterized in that: described block bottom side is provided with universal wheel, and described block front side is provided with pumping rod.
9. the portable sheet flow sampler of drawer type according to claim 1, is characterized in that: before and after described drawer, side is provided with handle.
10. a slope runoff method of sampling, is characterized in that, adopts the portable sheet flow sampler of drawer type as described in claim 1 to 9 any one, and carries out according to the following steps:
(1) after the rainwater on domatic flows down, with a drainage catheter, introduce in tank, flow sensor detects rainwater flow, and sends flow signal to control device;
(2) when rainwater enters after tank, control device starts stirrer, and stirring motor drive impeller, makes the rainwater that contains silt obtain uniform stirring, for the rainwater that follow-up peristaltic pump pumps is evenly distributed is prepared;
(3) when the water in tank reaches set amount, control device starts peristaltic pump, peristaltic pump is drawn the water in tank by external water delivery conduit, by built-in water delivery conduit, send gathering the water coming into distributing pipe valve sets, after being drawn onto the water yield of filling a sampling bottle, just stop water suction, start and topple over motor, remaining rainwater is outwelled, avoid remaining the sampling precision that rainwater affects next sampling bottle;
(4) control device moves to distributing pipe valve sets by electronic screw mandrel guide rail the top of first row sampling bottleneck, waits for water filling; Control device is opened the solenoid valve of distributing pipe valve sets successively singly, and each sampling bottle is carried out to water filling successively; After upper row's water filling finishes, electronic screw mandrel guide rail moves to distributing pipe valve sets the top of next row sampling bottleneck, again carries out water filling; By that analogy, until after all sampling bottles collections of drawer, by drawer pull out, sampling bottle is all taken out, change sky sampling bottle, continue sampling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410237262.XA CN103983479B (en) | 2014-05-30 | 2014-05-30 | A kind of portable sheet flow sampler of drawer type and the method for sampling thereof |
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| CN201410237262.XA CN103983479B (en) | 2014-05-30 | 2014-05-30 | A kind of portable sheet flow sampler of drawer type and the method for sampling thereof |
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| CN103983479B CN103983479B (en) | 2016-02-10 |
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Cited By (12)
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| CN104266865A (en) * | 2014-10-29 | 2015-01-07 | 东北大学 | Time-phased automatic sampler for surface runoff of urban pavement |
| CN105738158A (en) * | 2016-03-17 | 2016-07-06 | 北京市水科学技术研究院 | Device for automatically sampling natural rainfall in different time periods |
| CN106404587A (en) * | 2016-09-05 | 2017-02-15 | 安徽省环境科学研究院 | Water sample silt measuring instrument |
| CN107132081A (en) * | 2017-07-14 | 2017-09-05 | 中国科学院海洋研究所 | Large Copacity original position Fluid sampling system |
| CN107238516A (en) * | 2017-05-17 | 2017-10-10 | 长江水利委员会水文局 | A kind of twin-tub suspended sediment and water sample sampler |
| CN107340199A (en) * | 2016-11-17 | 2017-11-10 | 陕西省水土保持生态环境监测中心 | A kind of husky collection of full-automatic water and measurement apparatus |
| CN107560894A (en) * | 2017-09-29 | 2018-01-09 | 北京东方园林环境股份有限公司 | A kind of unmanned plane device to keep sample automatically for water quality and the method that keeps sample |
| CN107631908A (en) * | 2017-09-20 | 2018-01-26 | 青岛瑞通测控技术有限公司 | A kind of novel pipeline automatic sampler |
| CN111638098A (en) * | 2020-06-17 | 2020-09-08 | 刘荣强 | Continuous sampling and measuring device for runoff and sediment in water and soil conservation monitoring community |
| CN112798753A (en) * | 2021-03-26 | 2021-05-14 | 湖南慧泽生物医药科技有限公司 | Automatic digestion instrument and sampling device thereof |
| CN113188843A (en) * | 2021-05-10 | 2021-07-30 | 江西怡杉环保股份有限公司 | Water quality sampling equipment |
| CN113447312A (en) * | 2021-04-27 | 2021-09-28 | 河海大学常州校区 | Automatic gather unmanned ship of binary formula of water sample |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266865A (en) * | 2014-10-29 | 2015-01-07 | 东北大学 | Time-phased automatic sampler for surface runoff of urban pavement |
| CN105738158B (en) * | 2016-03-17 | 2018-05-08 | 北京市水科学技术研究院 | Natural rainfall automatic sampling apparatus at times |
| CN105738158A (en) * | 2016-03-17 | 2016-07-06 | 北京市水科学技术研究院 | Device for automatically sampling natural rainfall in different time periods |
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| CN107340199A (en) * | 2016-11-17 | 2017-11-10 | 陕西省水土保持生态环境监测中心 | A kind of husky collection of full-automatic water and measurement apparatus |
| CN107238516A (en) * | 2017-05-17 | 2017-10-10 | 长江水利委员会水文局 | A kind of twin-tub suspended sediment and water sample sampler |
| CN107132081A (en) * | 2017-07-14 | 2017-09-05 | 中国科学院海洋研究所 | Large Copacity original position Fluid sampling system |
| CN107132081B (en) * | 2017-07-14 | 2023-06-13 | 中国科学院海洋研究所 | High-capacity in-situ fluid sampling system |
| CN107631908A (en) * | 2017-09-20 | 2018-01-26 | 青岛瑞通测控技术有限公司 | A kind of novel pipeline automatic sampler |
| CN107631908B (en) * | 2017-09-20 | 2020-03-31 | 青岛瑞通测控技术有限公司 | Novel pipeline automatic sampler |
| CN107560894A (en) * | 2017-09-29 | 2018-01-09 | 北京东方园林环境股份有限公司 | A kind of unmanned plane device to keep sample automatically for water quality and the method that keeps sample |
| CN111638098A (en) * | 2020-06-17 | 2020-09-08 | 刘荣强 | Continuous sampling and measuring device for runoff and sediment in water and soil conservation monitoring community |
| CN112798753A (en) * | 2021-03-26 | 2021-05-14 | 湖南慧泽生物医药科技有限公司 | Automatic digestion instrument and sampling device thereof |
| CN112798753B (en) * | 2021-03-26 | 2021-07-02 | 湖南慧泽生物医药科技有限公司 | Automatic digestion instrument and sampling device thereof |
| CN113447312A (en) * | 2021-04-27 | 2021-09-28 | 河海大学常州校区 | Automatic gather unmanned ship of binary formula of water sample |
| CN113188843A (en) * | 2021-05-10 | 2021-07-30 | 江西怡杉环保股份有限公司 | Water quality sampling equipment |
| CN113188843B (en) * | 2021-05-10 | 2022-09-02 | 江西怡杉环保股份有限公司 | Water quality sampling equipment |
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