CN208736859U - Water quality on-line monitoring instrument, resolution measurement module and monitoring water quality on line system - Google Patents
Water quality on-line monitoring instrument, resolution measurement module and monitoring water quality on line system Download PDFInfo
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- CN208736859U CN208736859U CN201820565810.5U CN201820565810U CN208736859U CN 208736859 U CN208736859 U CN 208736859U CN 201820565810 U CN201820565810 U CN 201820565810U CN 208736859 U CN208736859 U CN 208736859U
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Abstract
The utility model relates to a kind of water quality on-line monitoring instruments comprising: sampling unit；Unit is cleared up, water sample and reagent are fed into the resolution unit via sampling unit, to be chemically reacted；Measuring unit, the liquid after chemically reacting can be transferred to measuring unit from resolution unit, to measure in measuring unit to liquid；Measurement module is cleared up, unit is cleared up and measuring unit is integrated in resolution measurement module, and clearing up measurement module includes a two-port valve, clears up unit and measuring unit is only selectively fluidly connected by the two-port valve being directly mounted between them.The utility model further relates to a kind of resolution measurement module for the water quality on-line monitoring instrument and a kind of monitoring water quality on line system.It can be reduced by them with cramped construction to reduce temperature of the liquid in transfer process, to inhibit the precipitation and generation of precipitating.
Description
Technical field
The utility model relates to a kind of water quality on-line monitoring instrument, which is mainly used for the change in water sample
Oxygen demand (COD) is learned to measure, to monitor water quality situation on-line.The utility model further relates to a kind of online for the water quality
The resolution measurement module of monitor and a kind of monitoring water quality on line system.
Background technique
Currently, water pollution problems increasingly causes to pay close attention to as an environmental protection problem outstanding.In order to protect the mankind to rely
With the water environment of existence, ensure people's drinking water hygiene, on the one hand needs to detect the water quality in production, life, another party
Face must also reinforce the monitoring to various productions and sanitary sewage discharge.
During being monitored to water environment, water quality detecting device is generallyd use, has been widely used for generating electricity
Factory, sewage treatment plants, textile mills, pharmaceutical factory, environmental protection administration, epidemic prevention department, hospital etc..Especially, Water Test Kits
Quality monitoring water environment is played a crucial role.
Currently, China's water pollution is serious, COD (COD) is the normal survey item that organic matter is characterized in water quality monitoring
Mesh, and have become an important water quality monitoring index.The national standard detection method of COD is potassium bichromate reflux
Method, this method accurate, high repeatability and other advantages with measurement result.
Known COD water quality on-line computing model is with potassium dichromate method to surface water, sanitary sewage and industrial wastewater etc.
The water quality of every profession and trade carries out the on-line monitoring of COD content.However, current COD water quality monitor but can not be useless to high chlorinity
Water carries out precise measurement.
This is primarily due to when the chloride ion content in water sample reaches a certain amount of, and sample cools to one after the completion of resolution
When determining temperature, the precipitating particle for having white is precipitated.It is first when the liquid containing such particulate matter is shifted to measuring unit
The solenoid valve on access can be first set to block and lose function.Even if not blocking temporarily, when the liquid with particulate matter enters measurement
Chi Hou, the precipitating of these molecules need long time, not only time of measuring are elongated significantly, do not meet on-the-spot test
Time demand.Simultaneously as the particle to suspend, severe jamming measurement result, so that measured value precision is greatly reduced, instrument
It can decline, not meet customer demand.Thus, known COD on-line computing model can not be using chloride ion on site currently on the market
The measurement of the higher water body of content is analyzed.
For example, primary flow path includes by a high-precision in existing COD water quality on-line computing model shown in Fig. 1
54, multi-pass selection valves 50 of syringe pump and buffering liquid storage mechanism 52 form a sampling unit.The sampling unit
It is able to achieve the sequence sample introduction function of different reagents, standard liquid and sample, they are pushed to a resolution unit, and (such as, resolution is anti-
Ying Chi) chemically reacted；Then the liquid after reaction is shifted by the cooperating of a pump and a selector valve again
To measuring unit 24 (such as, measuring cell), the high-acruracy survey of COD is carried out.Finally, the COD water quality on-line computing model is again survey
Liquid after amount empties to waste liquid reservoir 200 from measuring unit 24.
It is clear that further including a three-way connection, a threeway between resolution unit 22 and measuring unit 24
Valve and a peristaltic valve and many fluid circuits.Thus, not can avoid in the existing COD water quality on-line computing model yet by
In white precipitate particle precipitation and caused by solenoid valve blocking failure, elongate time of measuring, negative effect measured value precision etc.
Foregoing problems.
Thus, in Monitoring And Analysis of The Quality field can always in the presence of to be avoided that above-mentioned problems COD water quality it is online
The Improvement requirement of monitor.
Utility model content
The utility model provides a kind of water quality on-line monitoring instrument, which is used to need the chemistry in water sample
Oxygen amount measures, and includes: resolution unit, and measuring water sample and reagent can be fed into the resolution unit, with
It is chemically reacted；Measuring unit, the liquid after chemically reacting can be transferred to the measuring unit from resolution unit, to survey
Liquid is measured in amount unit；The water quality on-line monitoring instrument includes: resolution measurement module, clears up unit and measuring unit quilt
It is integrated in resolution measurement module, and clearing up measurement module includes a two-port valve, clears up unit and measuring unit only passes through
The two-port valve being directly mounted between them selectively fluidly connects.
By the water quality on-line monitoring instrument, the distance between the measuring unit that can further and resolution unit.Especially, it utilizes
By a two-port valve direct-assembling within resolution measuring unit, additional pipeline can be cancelled, existed therefore, it is possible to reduce liquid
Temperature slippage in transfer process, to inhibit the precipitation and generation of sediment.
Preferably, the water quality on-line monitoring instrument may also include sampling unit, sampling unit is configured to select with water sample and reagent
Selecting property is in fluid communication, and water sample and reagent can be fed into resolution unit via sampling unit.It can be real by sampling unit
Now in due course, suitable sampling of the substances such as water sample and reagent is mentioned so that realization is to the independent of various substances and accurately quantitative
Height test, the efficiency for monitoring COD.
In particular, the two-port valve being located in the resolution measurement module can be configured to high pressure valve, and including the
One interface and second interface, wherein first interface is fluidly connected with resolution unit, and second interface and measuring unit fluid connect
It connects, the two-port valve is constructed to be permeable to switch between opened and closed conditions, and in the on-state, liquid can be from via two-port valve
First interface flows to second interface.
By the high pressure valve being located between resolution unit and measuring unit, may be implemented to selectivity stream between the two
Body connection, to complete between in due course to shift through resolution liquid to the transfer of measuring unit, especially part.
Advantageously, the two-port valve further includes third interface, third interface configurations at being connected to the second interface and
It is fluidly connected with the triple valve being located at except the resolution measurement module, triple valve and pump connect and connect position including first
Set, under the first on-position, triple valve respectively with third interface and with pump communication, as a result, via third interface energy
Swabbing action is provided to liquid, the liquid is the liquid shifted from the resolution unit to measuring unit.
By triple valve being connected with the two-port valve, except module, can be cooperated by cooperation between the two
Complete the forwarding function of ultrahigh in efficiency.Especially, the pump connecting with triple valve can provide swabbing action, with accelerating liquid from disappearing
Solve transfer of the unit to measuring unit.
Especially, more specifically, triple valve can also include the second on-position, under second on-position,
The triple valve respectively be located at resolution measurement module in the measuring unit and with the pump communication, as a result,
The waste liquid being present in measuring unit can be discharged via triple valve from the resolution measurement module.
By second on-position, the waste liquid through measuring may be implemented to effective row except water quality on-line monitoring instrument
Out, that is, waste discharge function is completed.
Inside the resolution measurement module, along gravity direction, the measuring unit is arranged under the resolution unit
Side.Thus, it is possible to be carried out by the gravity of the liquid in resolution unit itself from resolution transfer of the unit to measuring unit, to the greatest extent
Managing this gravity may be not enough for fast transfer.
In addition, two-port valve can also include the 4th interface, the 4th interface configurations at be connected to first interface and with position
In clearing up another two-port valve except measurement module at fluidly connecting, another two-port valve is arranged in resolution measurement module and takes
Between sample unit, it is single from sampling unit selectively to flow into the resolution via another two-port valve for water sample and reagent as a result,
Member.
The selective sample introduction function to water sample and reagent may be implemented by another two-port valve, thus each needed for realizing
The amount of automatically supplying.
It is also conceivable that another two-port valve is arranged in below the resolution unit along gravity direction, and it is configured to down
Square high pressure valve, and there also is provided top high pressure valve above resolution unit.It is possible thereby to accelerating liquid, i.e. water sample and reagent point
Resolution unit is not rapidly entered.
In addition, the measuring unit being located in the resolution measurement module is additionally advantageously equipped with temperature control equipment, with
Temperature adjustment is carried out to the liquid being located in the measuring unit.Thus, the liquid after reaction can be kept at a certain temperature, from
And effectively further suppress the precipitation and generation of sediment.
The utility model also provides a kind of resolution measurement module for water quality on-line monitoring instrument, the resolution measurement module packet
Include: resolution unit, water sample and reagent are fed into the resolution unit via the sampling unit, to be chemically reacted；
Measuring unit, the liquid after chemically reacting can be transferred to the measuring unit from the resolution unit, with single in the measurement
Measurement module is cleared up in the measurement for carrying out COD to liquid in first；Wherein, the resolution unit and the measuring unit collection
At in the resolution measurement module, and the resolution unit and the measuring unit are only by being directly mounted between them
A two-port valve selectively fluidly connect.
By the resolution measurement module, two-port valve especially by direct-assembling within resolution measuring unit can be with
Cancel the setting of the additional pipe between each critical piece, thus, the arrangement of the resolution measurement module can reduce liquid
Temperature slippage in transfer process, so as to significantly inhibit the precipitation and generation of sediment.
Finally, the utility model also provides a kind of monitoring water quality on line system, which includes aforementioned
At least one of the water quality on-line monitoring instrument and waste liquid reservoir of type, water sample storage container, reagent reservoir three, the water
Matter on-line computing model include in waste liquid reservoir, water sample storage container, reagent reservoir three described at least one fluidly connect
Interface.
A series of functions such as sample introduction, resolution, measurement, waste discharge can be realized with simple and compact structure as a result, and will not be right
Environment causes any harmful influence.Especially, each interface/channel connection may be implemented simply to dock, and facilitate the water quality
The carrying of on-line monitoring system and field monitoring.
Detailed description of the invention
Fig. 1 shows the schematic diagram of existing COD water quality on-line computing model (being in box shown in dotted line)；
Fig. 2 shows exemplary COD water quality on-line computing models (being in box shown in dotted line) according to the present utility model
Structure chart；
When Fig. 3 shows exemplary COD water quality on-line computing model according to the present utility model and is in sample introduction product and reagent step
Schematic diagram；
Fig. 4 shows showing when exemplary COD water quality on-line computing model according to the present utility model is in bubbling, whipping step
Meaning property structure chart；
When Fig. 5 shows exemplary COD water quality on-line computing model according to the present utility model in resolution chemical reaction step
Schematic diagram；And
Fig. 6 shows exemplary COD water quality on-line computing model according to the present utility model and is in liquid from 22 turns of unit of resolution
Move on to schematic diagram when 24 step of measuring unit；
Fig. 7 shows showing when exemplary COD water quality on-line computing model according to the present utility model is in content measurement step
Meaning property structure chart；
Fig. 8 shows showing when exemplary COD water quality on-line computing model according to the present utility model is in discharge waste liquid step
Meaning property structure chart；
Fig. 9 shows a state of exemplary two-port valve according to the present utility model；
Figure 10 shows another state of exemplary two-port valve according to the present utility model；And
Figure 11 shows another state of exemplary two-port valve according to the present utility model.
Specific embodiment
In each attached drawing of the utility model, each portion of COD water quality on-line computing model 100 is only symbolically shown
Basic between part fluidly connects relationship, without specifically illustrating other necessary parts in fluid circuit (for example, control unit
Part, power supply part, driving part etc.).But one of skill in the art will understand that unshowned component is not that this is practical new
The key content of type, thus hereinafter repeat no more.
Fig. 2 shows the structure charts of exemplary COD water quality on-line computing model 100 according to the present utility model.Specifically, should
COD water quality on-line computing model 100 include sampling unit, the sampling unit can with water sample required for COD monitoring water quality on line,
Various reagents, air, deionized water etc. are in fluid communication.These water samples, various reagents, air can be outside water quality monitors 100
Portion supplies the sampling unit.For this purpose, the COD water quality on-line computing model 100 shown in the dashed rectangle of Fig. 2 may include external
Various interfaces, with provide these water samples, various reagents, air other devices be attached.
In one embodiment, which may include including at least institute in multi-pass selection valve 50, especially Fig. 2
The multi-pass rotary valve shown.The multi-pass selection valve 50 include at least one, preferably several imports and at least one, it is preferably several
Outlet, wherein water sample, various reagents, air etc. can separately flow into multi-pass selection valve 50 via these imports, and multi-pass selection valve
The resolution unit 22 that 50 outlet will for example can be supplied to these water samples, various reagents, air is in fluid communication, Huo Zheye
It can be connected to other component fluidics in sampling unit, to supply water sample, various reagents, air via these other components
It is given to resolution unit 22.
In addition, the outlet of multi-pass selection valve 50 can also be connect with waste liquids reservoirs 200 such as storage tanks for waste liquid to be discharged.
In addition, the public passage of multiple-way valve selection valve can connect with the deionized water container 300 being located at except online water quality monitor 100
It connects.The supplying step will be hereinafter further explained.
As schematically illustrated in Figure 2, water sample is (or other from the water sample flow cell being located at except water quality on-line monitoring instrument 100
Water sample storage container) No. 7 interfaces (now functioning as import) of multi-pass selection valve 50 are flowed to, and water sample and reagent can be via 5
Number interface (now functions as outlet) flow direction resolution unit 22.It is understood that multi-pass selection valve 50 can have than institute in Fig. 2
Show more or fewer inlet and outlets.In addition, " interface " referred to herein can also alternatively be interpreted as " channel ".
The sampling unit of the water quality on-line monitoring instrument 100 can also include for example centrally located with multi-pass selection valve 50
Common interface/channel attached pump 54, especially high-precision syringe pump and buffering liquid storage mechanism 52, for example shown in Fig. 2
Buffering ring.
Thus, on the one hand, the sampling unit of the utility model may be implemented to the quantitative or variable amount of of water sample, reagent etc.
It extracts, and being completely independent between water sample and the extraction of various samples and is isolated, will not influence the result of water quality monitoring.It is another
Aspect, extra liquid can also be discharged via the common interface/channel in sampling unit.For controlling sampling unit
Sequence of extraction and the controller of drain sequence be not the emphasis of the utility model, thus also repeat no more.
As previously mentioned, the resolution unit 22 of water quality on-line monitoring instrument 100, such as digestion pool can be configured to select with sampling unit
Selecting property is in fluid communication, thus water sample, reagent, air etc. can successively flow into the resolution unit 22 and be chemically reacted.Water quality exists
The measuring unit 24 of line monitor 100, such as measuring cell, which are then received, has already passed through chemical reaction in resolution unit 22
Liquid, to carry out the monitoring of COD or the monitoring of ammonia-nitrogen content to the liquid.
According to the utility model, water quality on-line monitoring instrument 100 includes a resolution measurement module 20, and the module is Fig. 2's
Right side is understood with solid line boxes to be shown.Aforementioned resolution unit 22 and measuring unit 24 are individually integrated into the resolution measurement module 20
In.In addition, the resolution measurement module 20 further include positioned at resolution unit 22 and measuring unit 24 between a two-port valve 26,
Especially high pressure valve.
The high pressure valve include first interface 81 and second interface 82, two interfaces especially relative to each other, with respectively with
Resolution unit 22 and measuring unit 24 fluidly connect.It is in 26 property of can choose of two-port valve open or close position, is being beaten
Open position, liquid can be transferred to measuring unit 24 from resolution unit 22, and in closed position, liquid cannot carry out this turn
It moves.
Since unit 22 and measuring unit 24 and 26 direct-assembling of two-port valve will be cleared up at a module, thus, directly
Furthered the distance between resolution unit 22 and measuring unit 24 are connect, and is eliminated and is located at resolution unit 22 originally and measures single
Fluid connection between member 24.Therefore, when liquid is transferred to measuring unit 24 from resolution unit 22, in transfer process
The heat of dissipation significantly reduces, to effectively inhibit the precipitation and generation of sediment, especially white particulate material.
It is understood that in the resolution measurement module 20 according to the present utility model, clearing up unit 22 and measuring unit
It only include a two-port valve 26 between 24, without additional valve or pump or additional pipeline, but needed for the two-port valve 26
Other accessories can also be assembled in the module.In addition, the module can also be comprising being located at measuring unit for monitoring
Other devices, such as electrooptical device of liquid in 24.
Advantageously, in the resolution measurement module 20, by measuring unit 24 be placed directly in resolution unit 22 lower section,
Immediately below especially, and by interface and the resolution unit 22 being located above on the opposite end of two-port valve 26 and it is located below
Measuring unit 24 be directly connected to.The advantage that measuring unit 24 is placed directly in the lower section of resolution unit 22 is also resided in can benefit
Accelerate transfer of the liquid from resolution unit 22 to measuring unit 24 with liquid self gravity, to accelerate to monitor process.
Advantageously, the two-port valve 26 inside resolution measurement module 20 includes third interface 83.Third interface 83 with
The second interface 82 of two-port valve 26 connecting with measuring unit 24 is to be in fluid communication.The third interface 83 can advantageously with cloth
An interface (being NC in Fig. 2) selectivity for a triple valve 30 being placed in except the module fluidly connects.The triple valve 30
Another interface (being COM in Fig. 2) preferably connect with a pump 40, especially peristaltic pump, to provide swabbing action
Preferably, the triple valve 30 includes at least the first on-position, under first on-position, due in module
Two-port valve 26 is switched to open position, thus liquid begins to transfer to measuring unit 24 from resolution unit 22, at this time triple valve
30 interface NC is connect with the two-port valve 26, thus by the swabbing action of peristaltic pump 40 make liquid from resolution unit 22 more rapidly
Ground is transferred to measuring unit 24.This swabbing action is highly beneficial in transfer process, because by liquid self gravity
It is difficult to complete transfer within the short time, so that monitoring process otherwise can have been elongated.The first connection position in triple valve 30
Step under setting will be further explained below.
Preferably, the triple valve 30 can also fluidly connect, especially with 24 the directly selecting property of measuring unit in module
It is directly connected to the lower section interface of measuring unit 24.In this regard, the triple valve 30 further includes another interface (NO shown in Fig. 2).
The triple valve 30 can also include at least the second on-position as a result, under second on-position, complete the survey to water quality
After amount, the exhaust gas liquid in measuring unit 24 in module can be arranged directly via the third valve being located at except module
Out, it is for example discharged in the waste liquid reservoir 200 except water quality monitor 100.
Advantageously, the pump 40 connecting with triple valve 30 also functions to the effect of suction under second on-position, thus
Accelerate discharge process of the waste liquid from the measuring unit 24 of module.
More preferably, the two-port valve 26 in module can also include the 4th interface 84.4th interface 84 and two-port valve 26
The first interface 81 connecting with resolution unit 22 is to be in fluid communication.4th interface 84 can be with another two outside module
Port valve 60, especially high pressure valve are in fluid communication.Another two-port valve 60 is advantageously arranged between sampling unit and module, from
And water sample, various reagents, air etc. selectively are provided to module (resolution unit 22).As shown in Figure 2, this another two
Port valve 60 (such as, lower section high pressure valve) can be connected to the interface 5 of the multi-pass selection valve 50 in sampling unit.
(and optionally it is located at except module in addition, the resolution unit 22 in module may include and connect with two-port valve 26
Another two-port valve 60 connect) an interface and interface, clear up unit another interface can be located at module except
Another two-port valve 26, especially top high pressure valve 70 connect.
In the present invention, lower section high pressure valve and top high pressure valve 70 are position of the two-port valve 26 relative to resolution unit
It sets to determine, but it is also contemplated that other orientations and relative position, in the scope of the utility model.
For example, top high pressure valve 70 can be designed to that 800 kPas of valve, lower section high pressure valve can be designed to 1500 kPas
Valve.Top high pressure valve and lower section high pressure valve can contribute to the sample introduction in liquid to module.
So far, the two-port valve 26 in resolution measurement module 20 according to the present utility model may include four interfaces, thus
Extend the function of the two-port valve 26 in entire fluid circuit.It is understood that in this four interfaces in addition to single with resolution
Outside two interfaces that member 22 and measuring unit 24 connect, other two interface can be connect with other components, to realize other function
Energy.
In addition it is also possible to which this is practical at this it is understood that two-port valve 26 can also be comprising being more or less than four interfaces
Within the scope of novel.But substantially, the two-port valve 26 still can only connection (that is, open) and cutting (that is, closing) position it
Between switch.
In addition, COD water quality on-line computing model 100 according to the present utility model is also to the measurement in resolution measurement module 20
Unit 24 increases heating and/or temperature controlled function.This can for example pass through the either internally or externally placement in measuring cell
Temperature control device, especially heating element are realized.The liquid after chemically reacting is after entering measuring unit 24 as a result, energy
It is enough to keep at a certain temperature, to further suppress the precipitation and generation of sediment, especially white particulate material.
Finally, the utility model also provides a kind of monitoring water quality on line system, which is advantageously wrapped
Include water quality on-line monitoring instrument 100 and waste liquid reservoir 200 described above, water sample flow cell 400, at least one in reagent reservoir
It is a.For this purpose, the water quality on-line monitoring instrument 100 may include in the waste liquid reservoir, the water sample flow cell, the reagent reservoir
It is described at least one, the preferably interface that all fluidly connects.
In the following, illustrating each work of COD water quality on-line computing model 100 in detail respectively by illustrative attached drawing 3-8 again
Make step:
As indicated by the arrows in fig. 3, water sample to be monitored and at least one reagent can be via water quality on-line monitoring instruments
At least one interface/channel of 100 sampling unit, especially multi-pass selection valve 50 and via optional lower section high pressure valve
Module is flowed to, and in the module via the 4th interface 84 of two-port valve 26, the first interface 81 being connected to the 4th interface 84
It flows into the resolution unit 22 for being preferably located at top.
As illustrated in the details in Fig. 9, at this time the upper lower flow channel between the first interface 81 and second interface 82 of two-port valve by every
From.The high pressure valve 60 being connected with the 4th interface 84 is opened, and liquid flows into module from sampling unit.That is, the 4th interface 84 and
One interface 81 keeps being in fluid communication in this case, thus, water sample and reagent can respectively from the 4th interface 84 and thus
First interface 81 flows into resolution unit 22.
In the water inlet sample and reagent the step of, the two-port valve 26 in module is to close, positioned at resolution 22 two sides of unit
Top high pressure valve 70 and lower section high pressure valve are to open, and triple valve 30 is in off-position at this time.
As shown by the arrows in figure 4, air is via the sampling unit via water quality on-line monitoring instrument 100, especially multi-pass
At least one interface/channel of selection valve 50 and flow to module via optional lower section high pressure valve, and in the module via
The first interface 81 of two-port valve 26 is sent into the resolution unit 22 for being preferably located at top.
Here, water sample and reagent are bubbled and are stirred by the air being sent into resolution unit 22, to aggravate chemistry
Reaction process.In the bubbling and stirring the step of, two-port valve 26 in module is still to close, positioned at resolution 22 two sides of unit
Top high pressure valve 70 and lower section high pressure valve are to open, and triple valve 30 is similarly in off-position at this time.
As shown in Figure 5, the liquid after agitated is sufficiently chemically reacted in the resolution unit 22 of inside modules.At this
In the step of resolution chemical reaction, Ge Gefa, whether two-port valve 26 or triple valve 30 are in closing off-position.Disappear
Xie Chi is under confined reaction state.
It is in this case, upper and lower between the first interface 81 and second interface 82 of two-port valve as illustrated in the details in Figure 10
Runner is isolated, and the high pressure valve 60 being connected with the 4th interface 84 also disconnects, thus forms confined space in resolution unit 22, by
This can carry out the chemical reaction of high temperature and pressure.
Then, as shown in Figure 6, when entering liquid transfer step, the two-port valve 26 positioned inside modules is opened, liquid
Body can flow directly into measuring unit 24 from resolution unit 22.In order to accelerate the transfer process to avoid the precipitation of deposit,
The triple valve 30 being located at outside module connecting with the two-port valve 26 enters the first on-position, i.e., it connects with the second of two-port valve 26
The interface NC of 82 connection of mouth are connected to the interface COM of the triple valve 30.Using the pump 40 being connect with interface COM, can directly take out
The liquid for coming from above resolution unit 22 is inhaled, to make it flow rapidly into underlying measuring unit 24, such as the arrow in Fig. 6
Shown in direction.
At this point, other than lower section two-port valve 60, top two-port valve 70 is in positioned at the two-port valves 26 of inside modules
Open position, and triple valve 30 is in the first on-position.
In more detail, as specifically shown in Figure 11, the first interface 81 of two-port valve 26 and second interface 82 be each other at this time
It is in fluid communication, i.e., valve is opened so that lower flow channel is unimpeded.The high pressure valve 60 being connected with the 4th interface 84 is then cut off, but with
The connected triple valve of three interfaces 83 is connected, and peristaltic pump can start to work, and parital vacuum is formed in runner, so as to by two
Resolution liquid inside the resolution unit 22 of 26 top of port valve is drawn into the measuring unit below two-port valve.
As shown in Figure 7, after the completion of liquid shifts, COD can be carried out in the measuring unit 24 in module
Measurement.At this point, the two-port valve 26 in module is closed, the lower section high pressure valve and top high pressure valve 70 outside module are also switched off,
Triple valve 30 is also in off-position.
It, can be in measuring unit 24 to the water of high chlorinity due to the high integration of module according to the present utility model
Sample is accurately monitored, and monitoring process also shortens.
Finally, after measurement is complete, step is discharged into waste liquid.At this point, triple valve 30 is in the second on-position, i.e.,
24 in direct fluid communication of measuring unit in the interface NO of triple valve 30 and module, thus by the waste liquid in measuring unit 24 via
Triple valve 30 is discharged to except water quality monitor 100.
Advantageously, the pump 40 connecting at this time with triple valve 30 also functions to the effect of suction waste liquid.The waste liquid of discharge can be with
It flows into the waste liquid reservoir of waste liquid barrel being located at except water quality monitor 100 etc.
Above-mentioned each work step can be repeated a number of times, constantly to realize the on-line monitoring of water quality, but each job step
Rapid order is not commutative, but the duration can be adjusted according to specific requirements.
In addition, although the water quality on-line monitoring instrument of the utility model is described according to chemical requirement, no
Exclude the application measured to other amounts of water quality, such as ammonia-nitrogen content.
Specific embodiment described in the utility model is only preferable embodiment, is not intended to limit by following rights
Protection scope defined by claim.Those skilled in the art can be made according to the content described in the utility model equivalence changes with
Remodeling, these both fall within the protection scope of the utility model.
Claims (11)
1. a kind of water quality on-line monitoring instrument (100), the water quality on-line monitoring instrument is used to carry out the COD in water sample
Measurement, and include:
It clears up unit (22), measuring water sample and reagent can be fed into the resolution unit (22), anti-to carry out chemistry
It answers；
Measuring unit (24), the liquid after chemically reacting can be transferred to the measuring unit from the resolution unit (22)
(24), to be measured in the measuring unit (24) to liquid；
It is characterized in that, the water quality on-line monitoring instrument includes:
It clears up measurement module (20), the resolution unit (22) and the measuring unit (24) are integrated in the resolution measurement mould
In block, and the resolution measurement module includes a two-port valve (26), the resolution unit (22) and the measuring unit
(24) it is only selectively fluidly connected by the two-port valve (26) being directly mounted between them.
2. water quality on-line monitoring instrument as described in claim 1, which is characterized in that it further include sampling unit, the sampling unit
It is configured to selectively be in fluid communication with the water sample and the reagent, and the water sample and the reagent can be single via the sampling
Member is fed into the resolution unit (22).
3. water quality on-line monitoring instrument as claimed in claim 2, which is characterized in that be located in the resolution measurement module (20)
The two-port valve (26) is configured to high pressure valve, and including first interface (81) and second interface (82), wherein described first connects
Mouth (81) is fluidly connected with the resolution unit (22), and the second interface (82) and the measuring unit (24) fluid connect
It connects, the two-port valve (26) is constructed to be permeable to switch between opened and closed conditions, and under the opening state, liquid is via institute
Stating two-port valve (26) can flow to the second interface (82) from the first interface (81).
4. water quality on-line monitoring instrument as claimed in claim 3, which is characterized in that the two-port valve (26) further includes third interface
(83), the third interface (83) be configured to be connected to the second interface (82) and be located at the resolution measurement module
(20) triple valve except fluidly connects, wherein the triple valve and pump connection and including the first on-position, described the
Under one on-position, the triple valve respectively with the third interface (83) and with the pump communication, as a result, via institute
Swabbing action can be provided to liquid by stating third interface (83), and the liquid is from resolution unit (22) the Xiang Suoshu measuring unit
(24) liquid shifted.
5. water quality on-line monitoring instrument as claimed in claim 4, which is characterized in that the triple valve further includes the second connection position
It sets, under second on-position, the triple valve is respectively and positioned at the measurement cleared up in measurement module (20)
Unit (24) and with the pump communication, the waste liquid being present in the measuring unit (24) as a result, can be via described
Triple valve is discharged from the resolution measurement module (20).
6. water quality on-line monitoring instrument as claimed in claim 5, which is characterized in that it is internal in the resolution measurement module (20),
Along gravity direction, the measuring unit (24) is arranged in the lower section of resolution unit (22).
7. water quality on-line monitoring instrument as claimed in claim 6, which is characterized in that the two-port valve (26) further includes the 4th interface
(84), the 4th interface (84) be configured to be connected to the first interface (81) and be located at the resolution measurement module
(20) another two-port valve (60) except at fluidly connecting, another two-port valve be arranged in the resolution measurement module (20) with
Between the sampling unit, as a result, the water sample and reagent from the sampling unit via another two-port valve selectively
Flow into the resolution unit (22).
8. water quality on-line monitoring instrument as claimed in claim 7, which is characterized in that another two-port valve is arranged along gravity direction
Below the resolution unit (22), and it is configured to lower section high pressure valve, and also arrange above the resolution unit (22)
There is top high pressure valve (70).
9. water quality on-line monitoring instrument as claimed in claim 8, which is characterized in that be located in the resolution measurement module (20)
The measuring unit (24) is equipped with temperature control equipment, to carry out temperature adjustment to the liquid being located in the measuring unit (24).
10. a kind of resolution measurement module (20) for water quality on-line monitoring instrument, which is characterized in that the resolution measurement module
(20) include:
It clears up unit (22), water sample and reagent are fed into the resolution unit (22) via sampling unit, to carry out chemistry
Reaction；
Measuring unit (24), the liquid after chemically reacting can be transferred to the measuring unit from the resolution unit (22)
(24), measurement module (20) are cleared up with the measurement for carrying out COD to liquid in the measuring unit (24)；
Wherein, the resolution unit (22) and the measuring unit (24) are integrated in the resolution measurement module (20), and
Resolution unit (22) and the measuring unit (24) are only selected by a two-port valve (26) being directly mounted between them
Fluidly connect to selecting property.
11. a kind of monitoring water quality on line system, the monitoring water quality on line system includes that water quality as described in claim 1 is online
Monitor (100) and at least one of waste liquid reservoir (200), water sample storage container, reagent reservoir three, wherein described
Water quality on-line monitoring instrument (100) includes and the waste liquid reservoir (200), the water sample storage container, the reagent reservoir three
In at least one described interface for fluidly connecting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820565810.5U CN208736859U (en) | 2018-04-19 | 2018-04-19 | Water quality on-line monitoring instrument, resolution measurement module and monitoring water quality on line system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975225A (en) * | 2019-04-17 | 2019-07-05 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of water quality total phosphorus in-line analyzer and its detection method |
| CN112161978A (en) * | 2020-09-29 | 2021-01-01 | 上海亨通海洋装备有限公司 | Nutrient salt water quality analyzer |
| CN112697989A (en) * | 2020-12-07 | 2021-04-23 | 赛默飞世尔（上海）仪器有限公司 | Water quality analyzer, liquid taking and feeding method for water quality analyzer and water quality online monitoring system |
-
2018
- 2018-04-19 CN CN201820565810.5U patent/CN208736859U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975225A (en) * | 2019-04-17 | 2019-07-05 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of water quality total phosphorus in-line analyzer and its detection method |
| CN109975225B (en) * | 2019-04-17 | 2024-01-02 | 水利部交通运输部国家能源局南京水利科学研究院 | Water quality total phosphorus online analyzer and detection method thereof |
| CN112161978A (en) * | 2020-09-29 | 2021-01-01 | 上海亨通海洋装备有限公司 | Nutrient salt water quality analyzer |
| CN112697989A (en) * | 2020-12-07 | 2021-04-23 | 赛默飞世尔（上海）仪器有限公司 | Water quality analyzer, liquid taking and feeding method for water quality analyzer and water quality online monitoring system |
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