CN101509843B - Sampling system for water filtrated by unattended shipborne multichannel film - Google Patents
Sampling system for water filtrated by unattended shipborne multichannel film Download PDFInfo
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- CN101509843B CN101509843B CN2009101113190A CN200910111319A CN101509843B CN 101509843 B CN101509843 B CN 101509843B CN 2009101113190 A CN2009101113190 A CN 2009101113190A CN 200910111319 A CN200910111319 A CN 200910111319A CN 101509843 B CN101509843 B CN 101509843B
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Abstract
The invention provides a sampling system of unattended shipborne multichannel film filtering water samples, relates to a sampling device of water samples and provides a sampling system of unattended shipborne multichannel film filtering water samples capable of automatically taking water, washing, filtering and water sampling. The sampling system is provided with a constant flow pump, a multi-channel switch valve, a shunt valve, a filtering device, a three-way valve, a vacuum bottle, a washing bottle, a sampling bottle, a multi-channel negative pressure control valve, a vacuum system, a control system and a computer. An injection port of the multi-channel switch valve is connected with the constant flow pump; the shunt valve is connected with a discharge port of the multi-channel switch valve; the filtering device is connected with the discharge port of the multi-channel switch valve; the three-way valve is connected with the filtering device, the washing bottle and a sampling bottle; the vacuum bottle is connected with the vacuum system; air inlets of the multi-channel negative pressure control valve are connected with the vacuum bottle, wherein one of the air inlets is connected with the atmosphere and an air outlet is connected with the vacuum system; and the control system is connected with the computer. The sampling system has the advantages of simultaneous implementation of sampling and filtering of water samples, short filtering period, high degree of automation and stable performance and the like.
Description
Technical field
The present invention relates to a kind of water sampling device, especially relate to a kind of sampling system for water filtrated by unattended shipborne multichannel film that is used for marine environmental monitoring.
Background technology
Membrane filtration technique is the important branch in modern separation technology field, and it mainly acts on is to remove to hold back colloid, bacterium and solid particulate matter etc. from fluid, with purposes such as reaching purification, separate and concentrate.Compare with conventional filtration, membrane filtration has plurality of advantages such as filtering accuracy height, absorption filtrate is few, filter velocity is fast, energy consumption is low, now has been widely used in environmental protection, chemical industry, food, medicine and other fields.
Carry out the research ship of water body investigation operations such as ocean or lake, need the collection in worksite water sample, detect and analyze distribution and variation with the monitoring Marine Environmental Elements.The correct collection of water sample is the primary prerequisite of department's water quality monitoring quality assurances such as environmental protection, health, ocean, the hydrology, and it has a direct impact for representativeness, the accuracy of Analysis Results of Water Quality.When being used for the water sampling of water analysis, adopt the filter membrane of special pore size distribution to filter usually to finish separating of particulate form and solubilised state sample.But the various water sample sampling apparatuses that use all are not equipped with membrane filtration equipment at present, and promptly water sample sampling process and water sample filter process need carry out separately.This not only strengthens operator's labour intensity, increases the cycle of water sample sampling, and from gathering to the filter time interval, a series of physicochemical change can take place water sample, thereby have reduced the authenticity and the validity of analytic process.
The existing filtration film filter that water body adopted is generally funneling negative pressure filtration device or pipeline changes film filter.
Funneling negative pressure filtration device is made of the preceding sample bottle of filter, special glass sand hourglass and filter back sample reception bottle, is commonly called as solvent filter.Be provided with bleeding point on special glass sand hourglass, vacuum pump constantly deflates from receiving bottle, utilizes negative pressure principle to improve the filter velocity of liquid, thereby realizes the filtration of liquid.This filtration unit from water intaking, drip washing, be filled into the transfer overall process manual operation of filter back solution, automaticity is low.And this filtration unit can only realize that single sample filters by single filter membrane, and the sample size of filtration is limited, and sample collecting efficient is low.In addition, solution need be transferred to the sample collecting bottle after the filter of this device, needs to scrub a whole set of filtration unit after the transfer, has strengthened operator's labour intensity and the risk that water sample stains, and therefore is difficult to satisfy the demand of current water analysis sample collecting.
Pipeline changes film filter and by pressure filtration liquid in the pipeline or air is carried out purifying.At present, this type of filtrator is used for the pre-filtering or the end-filtration of single passage more, and positive pressure system can be constant flow pump or syringe.For the constant flow pump positive pressure system, the preceding pressure of film is difficult to control in its course of work, and pressure is crossed the institutional framework that conference destroys particle in the sample before the film, even causes filter membrane to break, and filtration work can't normally be carried out.The syringe positive pressure system is fit to the filtration of small samples, and robotization realizes complicated.In addition, adopt vacuum lines to change the membrane filtration mode and carry out water sample and filter the filter membrane of selecting for use and be generally the hydrophobicity material, gas just can't pass through such filter membrane is met water in filter process after, and it is difficult that this problem causes the system automation of using such filter to realize.
Publication number is that the application for a patent for invention of CN1800810 discloses a kind of remotely-controlled multilayer water sampler, be used for deeply adopting water under water from ship, it comprises that one hangs the frame on the winch aboard ship and is located at a plurality of hydrophores in the frame by wirerope, hydrophore adopts the solenoid control closure, also comprise the controller of being located on the ship waterborne, send the steering order coding according to operation; Modulating and demodulating signal waterborne unit is connected with controller waterborne, and order number is modulated to the output of ultrasonic carrier signal, obtains under water ultrasonic carrier signal and demodulation and exports; And be located at the interior underwater signal modem module of frame, and obtain from ultrasonic carrier signal waterborne and demodulation output, will be the output of ultrasonic carrier signal from information coded modulation under water; Depth transducer sounds the depth of the water; Underwater manipulator with solenoid valve, underwater signal modem module, the depth transducer of hydrophore and can be connected with the flow rate and direction instrument by spare interface, obtains underwater information and is transferred to controller waterborne, and control electromagnetic valve is closed hydrophore.
Publication number is that the application for a patent for invention of CN1789955 discloses a kind of controllable deep-sea water sampler, comprise framework, the hydrophore group, drive gear unit and control module, the hydrophore group is made up of some independently hydrophores unit, the hydrophore unit comprises piston type hydrophore and linkage assembly formula limit switch, drive gear unit and comprise motor that is located on the framework and the gearing that connects motor and hydrophore unit, gearing is chain drive, chain is provided with the collision block of control limit switch action, and control module comprises the control center on the deck and is located at control center under water and Hall switch element on the framework.The present invention not only satisfies the working environment of deep-sea high temperature, High Voltage, high corrosion, can effectively guarantee to gather the authenticity of water body sample, the sample water body is not stain, and can be as required at the real-time control sampling action of different depth position, accurately to obtain the water body sample of different depth position.
Notification number provides a kind of suction type water sample sampling thief for the utility model patent of CN2249896, and principal character is by flexible pipe negative pressure generator, storage tank and stratified pumping controller UNICOM to be formed a work system.Negative pressure generator is by reinstalling a spring in the waveform soft shell and two retaining valves constitute.Storage tank is transparent, and the suction hose of stratified pumping controller has the length scale, and the float on it is used for adjusting the water sampling degree of depth.With foot-operated moving negative pressure generator, make to produce negative pressure in the total system during work, water sample enters storage tank by the stratified pumping controller.It is adjustable that water sample extracts degree of depth level, and maximum water intaking highly is 7 meters.
Publication number is that the application for a patent for invention of CN1595096 discloses a kind of pull-type hydrophore of walking to navigate, and a towed body is arranged, and it is characterized in that this towed body middle and lower part is equipped with submersible pump, and the latter's afterbody connects a cable; Sensor is equipped with in the middle and upper part in this towed body, and the latter's a end connects a lead; The water inlet of water pipe is communicated with the water delivering orifice of submersible pump, and this water inlet and water delivering orifice are fixed together with pipe collar, water pipe protrudes upward towed body, the upper end of suspension hook is fixed together by shackle and nylon cable tie by wirerope, place the top of water pipe, suspension ring hang on the coupler body of suspension hook, and the lower end of suspension ring is connected with two hangers on towed body top by two wire rope; Lead and cable by adhesive waterproof tape, place a side of water pipe.
Notification number is that the patent of invention of CN1303007 discloses a kind of water sampling system, is used for the water quality water sampling in supervision field automatically.System comprises water pump and the water tank that links to each other with water-supply-pipe, and the end that water-supply-pipe is connected with water tank is one section vertical pipeline section, draws a sampling arm from this vertical pipeline section, and the sampling arm extracts water sample by aspirating mechanism; The drainpipe of water tank links to each other with the water pump house steward, establishes the single slope drainage valve; Water sample is gathered by system to the current of current downflow in vertical pipeline section, the solid particle in the water is subjected to from gravity and momentum effect and falls into water tank, reaches and removes particle in the water sample, keeps the purpose of less suspension.Water-supply-pipe is not established filter screen, and current are unimpeded.
Summary of the invention
The objective of the invention is to separate with membrane filtration processes at the water sampling that existing water sample sampling apparatus exists, and manual operations is loaded down with trivial details, automaticity is low, filter cycle is long, the difficult shortcomings such as easy contamination that shift of filter back water sample, provides a kind of and can fetch water automatically, cleans, the sampling system for water filtrated by unattended shipborne multichannel film of work such as filtration, water sampling.
The present invention is provided with constant flow pump, hyperchannel transfer valve, diverting valve, filtration unit, T-valve, Dewar bottle, washer bottle, sampling bottle, hyperchannel negative pressure control valve, vacuum system, control system, RS-232 serial line interface and computing machine.
The hyperchannel transfer valve is provided with an inlet and a plurality of escape hole, inlet links to each other with constant flow pump, diverting valve links to each other with one of them escape hole of hyperchannel transfer valve, the filtration unit of a plurality of passages connects a plurality of escape holes of hyperchannel transfer valve, and T-valve is connected with filtration unit, washer bottle and sampling bottle respectively; Dewar bottle is an openable cavity, is used to hold sampling bottle and washer bottle, and Dewar bottle links to each other with the vacuum system of rear end; Washer bottle is used to collect the waste liquid that cleaning process produces; Sampling bottle is used to collect the water body example through after the filtration unit filtration; The hyperchannel negative pressure control valve is provided with a plurality of air intake openings and a gas outlet, and a plurality of air intake openings link to each other with the Dewar bottle of a plurality of passages, and one of them air intake opening links to each other with atmosphere, and the gas outlet links to each other with vacuum system; Control system is provided with PLC main frame, expansion module and order input display panel, parameters such as sampling time interval can be set according to user instruction, by the control of control program to hyperchannel transfer valve and T-valve, automatically finish operations such as the filtration of cleaning, water sample of original water sampling, system and collection, and can the real-time display system state and working time of corresponding operating; The PLC main frame links to each other with computing machine by the RS-232 serial line interface.
Described constant flow pump can be the device that peristaltic pump, syringe pump, reciprocating plunger pump or other can constant current be carried liquid.
Described hyperchannel transfer valve can be the commercialization multi-position valve.
Described diverting valve can be the valve of commercialization scalable fluid flow.
Described filtration unit can be the interchangeable film of commercialization or the filtration unit of interchangeable film not.
Described T-valve can be that three-way solenoid valve or other can carry out the multiport valve that valve position is switched.
Described Dewar bottle can be the seal chamber of the dismountable unlike material of commercialization.
Described vacuum system can be provided with vacuum pump and safety flack, for system provides negative pressure.
Described hyperchannel negative pressure control valve can be the commercialization multi-position valve.
Described control system can be for being the control module of central processing unit with single-chip microcomputer or PLC.
Described control program can be the PLC control program that adopts DL programming language or other programming languages to write.
Described RS-232 serial line interface is a standard interface.
Constant flow pump of the present invention can be carried original water body example for system; The hyperchannel transfer valve comprises an inlet and a plurality of escape hole, and inlet links to each other with constant flow pump, and other a plurality of escape holes link to each other with the filtration unit of a plurality of passages, according to the order of control system, with original water body sample delivery to the particular filter passage.Diverting valve links to each other with one of them escape hole of hyperchannel transfer valve, is delivered to the flow velocity of water body example in each filtration unit in order to adjusting.Filtration unit can adopt the interchangeable film of commercialization or the filtration unit of interchangeable film not, can carry out operations such as constant volume, filtration to water body example.T-valve can switch the threeway stream of one-in-and-two-out, selects output channel, in order to realize the cleaning step of pipeline and filtration unit.Dewar bottle is an openable cavity, and in order to hold sampling bottle and washer bottle, it links to each other with the vacuum system of rear end, can provide negative pressure to improve filter velocity for filtration unit; Washer bottle is the vial of certain volume, can collect the waste liquid that cleaning process produces; Sampling bottle is the water sample bottle of certain volume, in order to collect through the water body example after the filtration unit filtration.The hyperchannel negative pressure control valve comprises a plurality of air intake openings and a gas outlet, a plurality of air intake openings link to each other with the Dewar bottle of a plurality of passages, one of them air intake opening links to each other with atmosphere, the gas outlet links to each other with vacuum system, can be system's respective channel negative pressure is provided by regulating this valve, also can make each Dewar bottle internal gas pressure and atmospheric pressure balance, be convenient to open Dewar bottle by opening the air intake opening that links to each other with atmosphere.Vacuum system comprises vacuum pump and safety flack, for system provides negative pressure; Control system comprises PLC main frame, expansion module and order input display panel, parameters such as sampling time interval can be set according to user instruction, by the control of control program to hyperchannel transfer valve and T-valve, automatically finish operations such as the filtration of cleaning, water sample of original water sampling, system and collection, and can the real-time display system state and working time of corresponding operating.Control program can be controlled hyperchannel transfer valve and T-valve, can be optimized steps such as the cleaning of system, filtrations by real-time adjustment control program.By the RS-232 serial line interface PLC main frame is linked to each other with computing machine and can upload and download control program; Utilize computing machine by program editing software control program to be adjusted, changed, according to actual needs, the initialization system workflow realizes the sampling request to different water body examples.
The water sample that the present invention can finish single or multiple passages filters acquisition tasks, the short then a few minutes of sampling time interval between two samples, long then several hrs even several days.Have water sample sampling with filter carry out simultaneously, filter cycle is short, automaticity is high, steady performance.It can provide the water sample of process filtration for multiple boat-carrying analytical instrument, satisfies the needs of on-the site analysis test.
Description of drawings
Fig. 1 is that the structure of the embodiment of the invention is formed synoptic diagram.In Fig. 1,1 is that constant flow pump, 2 is that hyperchannel transfer valve, 3 is that diverting valve, 4 is that filtration unit, 5 is that T-valve, 6 is that Dewar bottle, 7 is that washer bottle, 8 is that sampling bottle, 9 is that hyperchannel negative pressure control valve, 10 is that vacuum pump, 11 is that control system, 12 is that computing machine, 13 is that each passage of system, 14 is a safety flack.
Embodiment
Below in conjunction with accompanying drawing the present invention is elaborated.
Referring to Fig. 1, the present invention is provided with constant flow pump 1, hyperchannel transfer valve 2, diverting valve 3, filtration unit 4, T-valve 5, Dewar bottle 6, washer bottle 7, sampling bottle 8, hyperchannel negative pressure control valve 9, vacuum pump 10, control system 11, computing machine 12, each passage 13 of system and safety flack 14.
During use,, control program is downloaded to the PLC main frame of control system 11 from computing machine 12 by the RS-232 serial line interface according to the adjustment of actual water body sampling needs, change control program; After the system start-up, power supply opening, constant flow pump 1 beginning pump water, vacuum pump 10 begins to vacuumize, and control system 11 enters holding state.Adjust diverting valve 3 and provide a suitable sampling hydraulic pressure, adjust hyperchannel negative pressure control valve 9 and provide condition of negative pressure for the Dewar bottle 6 in each passage 13 of system for system.Behind the system stability, systematic parameter such as the order input panel setting by control system 11, store sample time interval, and operational system.According to the order of control system 11, hyperchannel transfer valve 2 switches to original water sample the water sample of gathering certain volume in the filtration unit 4 of respective channel, and unnecessary water sample flows out by the overflow vent of filtration unit 4; After original water sampling was finished, the valve position of system's control T-valve 5 was led to washer bottle 7, and water sample filters the back and flows into wherein, cleaning and filtrating equipment 4 and pipeline 13; After cleaning finished, hyperchannel transfer valve 2 carried out the collection of original water sample once more, and the valve position of gathering back system control T-valve 5 is led to sampling bottle 8, and water sample filters the back and flows into wherein; According to the sampling time interval that control system 11 has been provided with, arrive the corresponding time after, operation such as another passage is fetched water once more, cleaned, filtration, until all passage releases, control system 11 reenters holding state; Close constant flow pump 1 and vacuum pump 10 and regulate hyperchannel negative pressure control valve 9 and open Dewar bottle 6 internal gas pressures and the atmospheric pressure balance that the air intake opening that links to each other with atmosphere makes each passage 13 of system, open Dewar bottle 6 taking-up sampling bottles 8, sampling is finished.
Claims (10)
1. a sampling system for water filtrated by unattended shipborne multichannel film is characterized in that being provided with constant flow pump, hyperchannel transfer valve, diverting valve, filtration unit, T-valve, Dewar bottle, washer bottle, sampling bottle, hyperchannel negative pressure control valve, vacuum system, control system, RS-232 serial line interface and computing machine;
The hyperchannel transfer valve is provided with an inlet and a plurality of escape hole, inlet links to each other with constant flow pump, diverting valve links to each other with one of them escape hole of hyperchannel transfer valve, the filtration unit of a plurality of passages connects a plurality of escape holes of hyperchannel transfer valve, and T-valve is connected with filtration unit, washer bottle and sampling bottle respectively; Dewar bottle is an openable cavity, is used to hold sampling bottle and washer bottle, and Dewar bottle links to each other with the vacuum system of rear end; Washer bottle is used to collect the waste liquid that cleaning process produces; Sampling bottle is used to collect the water body example through after the filtration unit filtration; The hyperchannel negative pressure control valve is provided with a plurality of air intake openings and a gas outlet, and a plurality of air intake openings link to each other with the Dewar bottle of a plurality of passages, and one of them air intake opening links to each other with atmosphere, and the gas outlet links to each other with vacuum system; Vacuum system is provided with vacuum pump; Control system is provided with PLC main frame, expansion module and order input display panel, and the PLC main frame links to each other with computing machine by the RS-232 serial line interface.
2. a kind of sampling system for water filtrated by unattended shipborne multichannel film as claimed in claim 1 is characterized in that described constant flow pump is peristaltic pump, syringe pump or reciprocating plunger pump.
3. a kind of sampling system for water filtrated by unattended shipborne multichannel film as claimed in claim 1 is characterized in that described hyperchannel transfer valve is a multi-position valve.
4. a kind of sampling system for water filtrated by unattended shipborne multichannel film as claimed in claim 1 is characterized in that described diverting valve is the valve of scalable fluid flow.
5. a kind of sampling system for water filtrated by unattended shipborne multichannel film as claimed in claim 1 is characterized in that described filtration unit is the interchangeable film or the filtration unit of interchangeable film not.
6. a kind of sampling system for water filtrated by unattended shipborne multichannel film as claimed in claim 1 is characterized in that described T-valve is that three-way solenoid valve maybe can carry out the multiport valve that valve position is switched.
7. a kind of sampling system for water filtrated by unattended shipborne multichannel film as claimed in claim 1 is characterized in that described Dewar bottle is dismountable seal chamber.
8. a kind of sampling system for water filtrated by unattended shipborne multichannel film as claimed in claim 1 is characterized in that described hyperchannel negative pressure control valve is a multi-position valve.
9. a kind of sampling system for water filtrated by unattended shipborne multichannel film as claimed in claim 1 is characterized in that described control system is for being the control module of central processing unit with single-chip microcomputer or PLC.
10. a kind of sampling system for water filtrated by unattended shipborne multichannel film as claimed in claim 1 is characterized in that vacuum system is provided with vacuum pump and safety flack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101113190A CN101509843B (en) | 2009-03-19 | 2009-03-19 | Sampling system for water filtrated by unattended shipborne multichannel film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101113190A CN101509843B (en) | 2009-03-19 | 2009-03-19 | Sampling system for water filtrated by unattended shipborne multichannel film |
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| CN101509843A CN101509843A (en) | 2009-08-19 |
| CN101509843B true CN101509843B (en) | 2011-04-20 |
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| CN2009101113190A Expired - Fee Related CN101509843B (en) | 2009-03-19 | 2009-03-19 | Sampling system for water filtrated by unattended shipborne multichannel film |
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2009
- 2009-03-19 CN CN2009101113190A patent/CN101509843B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572000A (en) * | 2017-03-07 | 2018-09-25 | 中国科学院寒区旱区环境与工程研究所 | One kind being used for river water sample collection and field assay device |
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| CN101509843A (en) | 2009-08-19 |
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