CN211718259U - Water quality analyzer - Google Patents
Water quality analyzer Download PDFInfo
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- CN211718259U CN211718259U CN201922113977.5U CN201922113977U CN211718259U CN 211718259 U CN211718259 U CN 211718259U CN 201922113977 U CN201922113977 U CN 201922113977U CN 211718259 U CN211718259 U CN 211718259U
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Abstract
The utility model provides a water quality analyzer, include: a container; the electronic balance is used for bearing the container and weighing the container; and the liquid inlet device is communicated with the container and is used for adding different kinds of liquid into the container so as to prepare the solution in the container. The novel water quality analyzer of this implementation has the first mode of operation of preparing standard sample solution, dilutes the second mode of operation of standard sample solution in order to prepare non-standard sample solution to and prepare the third mode of operation of measuring reagent. The utility model discloses an in the water quality analyzer working process, weigh the weight around solution gets into in the container through electronic balance, can convert weight, volume and the proportion that obtains sample solution, electronic balance has higher precision and lower detection limit to reduce measuring error, improved solution ration precision.
Description
Technical Field
The utility model relates to a water quality testing field, more specifically say, the utility model relates to a water quality analyzer.
Background
The on-line water quality analyzer is a water quality monitoring device and can monitor and measure one or more parameters of a water body. The monitoring process often requires the use of solutions, such as standard sample solutions, measurement reagents, which are consumables and usually need to be replenished when an insufficient amount is available. Some existing water quality analyzers are provided with automatic solution preparation modules in a matched manner in order to avoid frequent replenishment of such solutions and improve the automation degree of the analyzer.
Existing automated solution formulation modules mainly include two types:
an extracting device with set height of extracting port is used, namely the extracting port of an extracting pipe is arranged at a specific height in a container containing liquid components of a solution to be prepared, the extracting pipe is communicated with a vacuum pump, and the liquid in the container is extracted by the vacuum pump. However, the device has the phenomenon of wall hanging of the solution on one hand, and on the other hand, the volume of the extracted liquid is influenced by the uneven arrangement of the instrument or the uneven liquid level caused by shaking, so that the quantitative accuracy is low.
The other device also adopts a mode of mixing liquid with different determined volumes to prepare solution, particularly uses a syringe with fixed volume to measure the liquid, and is difficult to rely on a motor and a screw device to improve the working precision.
In addition, in the above conventional apparatuses, since it is impossible to measure an extremely small amount of liquid (for example, mother liquid) because of a large volume measurement error, it is difficult to prepare a solution having an extremely low concentration.
SUMMERY OF THE UTILITY MODEL
In view of prior art's above-mentioned problem, the utility model provides a water quality analyzer can not receive or less receive the influence of wall built-up phenomenon and the uneven phenomenon of liquid level on the one hand, prepares solution more accurately, and on the other hand can measure the liquid of minute quantity, is applicable to more and prepares the solution of extremely low concentration.
Particularly, the technical scheme 1 of the utility model is a water quality analyzer, include: a container; the liquid inlet device is communicated with the container and is used for adding different types of liquid into the container so as to prepare a solution in the container; the electronic balance is used for bearing the container and weighing the container and the liquid in the container; and the information output module is arranged on the electronic balance and outputs information obtained by the electronic balance in a weighing way.
According to the technical scheme, the electronic balance weighs the weight of the liquid in the container before and after the liquid enters the container, the weight of the container can be increased even if the liquid is hung on the wall, the weight change is reflected by the weighing result output by the information output module, and therefore the phenomenon of hanging on the wall cannot or less influence the measuring result; in addition, the weighing of the electronic balance has higher precision compared with the original volume metering means, and the solution can be prepared more accurately; furthermore, the electronic balance has high sensitivity (or low detection limit), and can accurately measure a very small amount of liquid, so that the electronic balance is more suitable for preparing a solution with very low concentration.
The technical scheme 2 of the utility model is a water quality analyzer, and the inlet means passes through information output module and electronic balance communication connection.
According to the technical scheme, the liquid inlet device is in communication connection with the electronic balance, and the liquid inlet amount of the liquid inlet device can be controlled according to the measurement data output by the information output module of the electronic balance.
The technical proposal 3 of the utility model is a water quality analyzer, which also comprises,
and the control system is in communication connection with the electronic balance and the liquid inlet device respectively.
According to the technical scheme, the control system can feed back and control the liquid inlet quantity of the liquid inlet device according to the weighing result output by the information output module of the electronic balance, so that the accuracy of the concentration of the prepared solution is improved on one hand, and the solution with different concentrations can be automatically prepared by setting the control system on the other hand.
The technical scheme 4 of the utility model is a water quality analyzer, a container comprises a first liquid inlet and a second liquid inlet; the liquid inlet device comprises: the first liquid inlet device is communicated with a first liquid inlet of the container; and the second liquid inlet device is communicated with a second liquid inlet of the container.
According to above-mentioned technical scheme, two kinds of liquid can not take place to mix before the inlet means gets into the container, have improved the accuracy nature that the solution was prepared.
The technical scheme 5 of the utility model is a water quality analyzer which is provided with a solvent liquid storage tank which is communicated with an inlet of a first liquid inlet device; and the mother liquid storage tank is communicated with the inlet of the second liquid inlet device.
According to above-mentioned technical scheme, through the connecting line of control inlet means, can make the mother liquor diluted by the solvent in the container to more accurately make the mother liquor into standard sample solution.
The technical scheme 7 of the utility model is a water quality analyzer which is provided with a first reagent liquid storage tank which is communicated with an inlet of a first liquid inlet device; and the second reagent liquid storage tank is communicated with the inlet of the second liquid inlet device.
According to the technical scheme, the water quality analyzer can also automatically prepare a measuring reagent by controlling the connecting pipeline of the liquid inlet device.
Through making water quality analyzer possess and move under different working methods, the ability of preparation different grade type solution, this water quality analyzer can accomplish the measurement test of more various kinds of parameter with automizing, more accurately.
According to above-mentioned technical scheme, can change the liquid storage pot of being connected with first inlet means through the valve switching in actual solution preparation demand to actual production's convenience has been improved.
The technical scheme 9 of the utility model is a water quality analyzer, water quality analyzer has the second diverter valve, sets up the entrance side at second inlet means for switch mother liquor liquid storage pot, standard sample solution liquid storage pot or second reagent liquid storage pot and second inlet means's intercommunication.
According to above-mentioned technical scheme, can switch the liquid storage pot of being connected with second inlet means through the valve in actual solution preparation demand to actual production's convenience has been improved.
The technical scheme 10 of the utility model is a water quality analyzer, water quality analyzer's first inlet means is the peristaltic pump, and the second inlet means is electron syringe.
According to the technical scheme, the peristaltic pump and the electronic injector are matched for use, so that the appropriate liquid inlet device can be selected pertinently according to different dosage requirements, wherein the peristaltic pump is used for controlling the injection of liquid with large dosage, and the electronic injector is used for controlling the injection of liquid with small dosage.
Drawings
Fig. 1 is a schematic view of a water quality analyzer according to the present embodiment.
Fig. 2 is a schematic view of a first operation mode of the water quality analyzer according to the present embodiment.
Fig. 3 is a schematic view of a second operation mode of the water quality analyzer according to the present embodiment.
Fig. 4 is a schematic view of a third operation mode of the water quality analyzer according to the present embodiment.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig. 1 is a schematic structural view of an on-line water quality analyzer according to the present embodiment. As shown in fig. 1, in the water quality analyzer of the present embodiment, a container 2 is mounted on an electronic balance 1 and supported by the electronic balance 1, the electronic balance 1 can weigh the entire weight of the container 2 (including the liquid contained therein), the electronic balance 1 includes an information output module 11, and the information output module 11 of the electronic balance 1 is connected to a control system 5 of the entire apparatus in a communication manner.
The vessel 2 is provided with a first inlet 31 and a second inlet 41. The water quality analyzer of the present embodiment further includes a first inlet device 3 and a second inlet device 4, the first inlet device 3 communicates with the container 2 through a first inlet 31 at the downstream side of the liquid flow path thereof, and the second inlet device 4 communicates with the container 2 through a second inlet 41 at the upstream side of the liquid flow path thereof. First inlet 31 and second inlet 41 can with container 2 butt or be connected, also the suspension is in the bottle of container 2 at the bottom of the top, first inlet 31 and second inlet 41 set up highly can adjust according to actual need apart from the bottle of container 2 at the bottom of, for example can set up the position that is comparatively close to the bottle bottom to avoid liquid 9 to cause great impact at the bottom of flowing or the drippage in-process to the bottle of container 2, make electronic balance reading unstability. In some embodiments, the problem of inaccurate readings caused by liquid flow impact can also be avoided by reading the final value after the readings are stable.
The water quality analyzer of the present embodiment further includes a plurality of liquid storage tanks 10 each storing different types of liquid 9, such as a mother liquid 92 (or stock liquid) of the standard sample solution 93, a solvent 91, the standard sample solution 93, a reagent, and the like. And on the inlet side of the first liquid inlet means 3, there is a first switching valve (not shown) for switching the reservoir tank 10 communicating with the first liquid inlet means 3, and on the inlet side of the second liquid inlet means 4, there is a second switching valve (not shown) for switching the reservoir tank 10 communicating with the second liquid inlet means 4. When preparing the solution, the first liquid inlet device 3 and the second liquid inlet device 4 can switch the liquid storage tanks 10 communicated with the first switching valve and the second switching valve as required, so that the corresponding liquid 9 can be extracted from the corresponding liquid storage tanks 10 to prepare the solution.
Specifically, the first switching valve and the second switching valve may be multi-way valves (for example, eight-way valves), and are disposed on inlet sides of respective liquid flow paths of the first liquid inlet device 3 and the second liquid inlet device 4, respectively.
In this embodiment, in the solution preparation process, the communication pipeline on the upstream side of the first liquid inlet device 3 and the second liquid inlet device 4 can be adjusted by switching the first switching valve and the second switching valve. In some embodiments, the first liquid inlet device 3 and the second liquid inlet device 4 may be communicated with the same liquid storage tank 10, and the liquid inlet devices (the first liquid inlet device 3 and the second liquid inlet device 4) with different structures and types may respectively play roles in controlling the rapid injection of a large amount of liquid and the accurate injection of a small amount of liquid, thereby taking account of the speed and the accuracy of the liquid injection.
The water quality analyzer of the embodiment further comprises a control system 5, wherein the control system 5 is respectively in communication connection with the electronic balance 1, the first liquid inlet device 3 and the second liquid inlet device 4, the control system 5 can obtain weighing data output by the information output module 11 of the electronic balance 1 through communication with the electronic balance 1, and control the first liquid inlet device 3 and the second liquid inlet device 4 to act according to the weighing data, so that the liquid 9 flowing through the first liquid inlet device 3 and the second liquid inlet device 4 is controlled to flow into and cut off the container 2.
The automatic solution preparation module of the water quality analyzer of the present embodiment can prepare different types of solutions by communicating different liquid storage tanks 10. Specifically, according to different measurement requirements of the analyzer, the solution automatic preparation module provided by the embodiment has different working modes according to different preparation requirements, so as to adjust the preparation method and parameters in a targeted manner to meet the different preparation requirements. Specifically, the solution automated preparation module provided by the present embodiment includes: a first operation mode of preparing the standard sample solution 93, a second operation mode of diluting the standard sample solution 93 to obtain different concentrations of the standard sample solution 93, and a third operation mode of preparing the measuring reagent. The above list of modes of operation is merely illustrative, and in other embodiments, the solution automated compounding module may include one or both of the modes of operation, or other modes of operation. In addition, in some embodiments, such as in the third mode of operation of this embodiment, the same inlet device may also be in communication with multiple reagent reservoirs 10 simultaneously (e.g., electronic injector 42 in communication with second reagent reservoir 7-1 for reagent B and third reagent reservoir 8-1 for reagent C simultaneously), or in communication with different reservoirs 10 at different times (e.g., electronic injector 42 in communication with second reagent reservoir 7-1 for reagent B during a first pipetting operation and in communication with third reagent reservoir 8-1 for reagent C during a second pipetting operation).
Furthermore, the container 2 in the present apparatus can provide a platform for the preparation of the measurement reagent, but does not limit the specific obtaining manner of the preparation of the measurement reagent, for example, in some embodiments, the preparation of the measurement reagent can be obtained by diluting the mother liquor 92 of the measurement reagent, and can also be obtained by mixing or even reacting different measurement reagents, dilution water, standard reagents, and the like.
Fig. 2 is a schematic view of a first operation mode of the water quality analyzer of the present embodiment, fig. 3 is a schematic view of a second operation mode of the water quality analyzer of the present embodiment, and fig. 4 is a schematic view of a third operation mode of the water quality analyzer of the present embodiment.
As shown in fig. 2 to 4, in each operation mode of the water quality analyzer of the present embodiment, the peristaltic pump 32 is used as the first liquid inlet device 3, and the electronic syringe 42 is used as the second liquid inlet device 4. The control system 5 is composed of a detector 51 and a PC system 52, the detector 51 can detect the measurement value output by the information output module 11 of the electronic balance 1 and feed the value back to the PC system 52, the PC system 52 determines whether to continue to add the liquid 9 (such as the mother liquid 92 or the solvent 91) according to the conversion relation of the parameters such as density, volume, mass and concentration by the feedback value of the detector 51 and matching with an internal program, and then the control module in the PC system can control the start or stop of the peristaltic pump 32 and the electronic injector 42 based on the comparison between the calculation result and the feedback value.
As shown in fig. 2, in the first operation mode of the water quality analyzer of the present embodiment, the mother liquid tank 7 stores the standard sample solution 93 to be preparedA mother liquor 92, and a solvent reservoir 6 for storing a solvent 91 (e.g., dilution water). In the preparation process of the standard sample solution 93, firstly, the PC system 52 controls the second switching valve to connect the electronic injector 42 with the mother solution storage tank 7, and the electronic injector 42 is turned on, so that the electronic injector 42 extracts the mother solution 92 out of the mother solution storage tank 7. Then, the mother liquid 92 sequentially passes through the electronic injector 42 and the second liquid inlet 41 and enters the container 2, the value of the weighing container 2 of the electronic balance 1 begins to change along with the entering of the mother liquid 92, and the detector 51 obtains the value m of the electronic balance 1 in real time0And the value m is compared0To the PC system 52. The PC system 52 bases on the value m0With a previously determined threshold value m1(target concentration of the prepared standard sample solution 93, mass of the desired mother liquor 92 determined by the target volume) and the like, the operation of the electronic injector 42 is controlled: for example, if m0<m1Continue to deliver the sample using the electronic injector 42 if m0Up to m1Then the operation of the electronic injector 42 is turned off, if m0>m1Then the target weight or target volume of the required solvent 91 is recalculated.
Next, after the mother liquor 92 having been weighed to a predetermined weight is obtained, the PC system 52 closes the electronic syringe 42, controls the first switching valve to connect the peristaltic pump 32 to the solvent reservoir 6, and then turns on the peristaltic pump 32 to add a predetermined volume or weight of the solvent 91 (dilution water) to the container 2. The predetermined volume or weight may be the volume or weight of the solvent 91 required by the PC system 52 according to the target concentration, target volume, etc. of the prepared standard sample solution 93, or may be m0The target weight or target volume of the desired solvent 91 obtained is recalculated, and may be any other suitable computationally determined weight or volume value. In addition, if the solvent 91 is added in a predetermined weight as a target, the feedback control method may be performed with reference to the addition method of the mother liquor 92.
In the first operation mode of the water quality analyzer of the present embodiment, the control system 5, which is composed of the detector 51 and the PC system 52, acquires the result of the weighing data of the electronic balance 1, and controls the operations of the peristaltic pump 32 and the electronic syringe 42 according to the result of the data, thereby preparing the mother liquid 92 into the standard sample solution 93 in the container 2. Because the electronic balance 1 has higher sensitivity, accuracy and lower detection limit in weighing, the metering error caused by metering the volume of the mother liquid 92 by adopting a fixed-volume device is avoided, so that the accuracy of preparing the standard sample solution 93 is improved, and the standard sample solution 93 with extremely low concentration can be automatically prepared. After the preparation of the standard sample solution 93 is completed in the container 2, the prepared standard sample solution 93 is discharged for use through the discharge port 20 or is transferred to the corresponding reservoir tank 10 for storage.
As shown in fig. 3, in the second operation mode of the water quality analyzer of the present embodiment, the solvent reservoir 6, which is in communication with the peristaltic pump 32, stores the solvent 91, the PC system 52 controls the second switching valve to communicate the electronic syringe 42 with the standard sample reservoir 9, and the standard sample reservoir 9 stores the standard sample solution 93. Similarly to the first operation mode, the container 2 may serve as a platform for diluting the standard sample solution 93 by adding a solvent 91 (e.g., dilution water) to the extracted standard sample solution 93 to dilute the standard sample solution 93 to a specific ratio, and discharging the diluted standard sample solution 93 through the discharge port 20 for use, or transferring the diluted standard sample solution 93 to the corresponding reservoir 10 for storage.
As shown in fig. 4, in the third operation mode of the water quality analyzer of the present embodiment, the PC system 52 controls the first switching valve to communicate the peristaltic pump 32 with the first reagent reservoir 6-1 storing the reagent a, controls the second switching valve to communicate the electronic syringe 42 with the second reagent reservoir 7-1 storing the reagent B, and further controls the second switching valve to communicate the electronic syringe 42 with the third reagent reservoir 8-1 storing the reagent C. Similarly to the first operation mode, the container 2 may serve as a platform for preparing the measurement reagent, and the measurement reagent is prepared according to a predetermined ratio by adding the specified mass or volume of the reagent a, the reagent B, and the reagent C into the container, and the prepared measurement reagent is discharged through the discharge port 20 for use, or is transported to the corresponding liquid storage tank 10 for storage.
In this embodiment, the solvent 91 and the mother liquor 92 enter the container 2 through the first liquid inlet 31 and the second liquid inlet 41, respectively, so as to avoid mixing or cross contamination between the solvent 91 and the mother liquor 92 before entering the container 2, and improve the accuracy of solution preparation. And the liquid feeding of the peristaltic pump 32 and the electronic injector 42 is alternatively carried out, and the liquid in different pipelines is injected into the container at different time intervals, so that the weighing result of the electronic balance 1 can uniquely reflect the weight of the injected liquid in a specific pipeline (the pipeline taking the liquid), and the determination method of the weight parameter is simplified.
In addition, the peristaltic pump 32 and the electronic injector 42 are used in a matched mode, so that a proper liquid inlet device can be selected pertinently according to different dosage requirements, liquid inlet is more flexible, the peristaltic pump 32 is used for controlling liquid injection of large dosage, and the electronic injector 42 is used for controlling liquid injection of small dosage.
Through the way, the automatic solution preparation module of the water quality analyzer provided by the embodiment weighs the weight of the liquid 9 in the container 2 before and after the liquid 9 enters through the electronic balance 1, and the weight of the container 2 can be increased even if the liquid 9 is hung on the wall, so that the liquid is reflected by the weighing result obtained by the information output module 11 of the electronic balance, and further, the measuring result is not or less affected; in addition, the weighing of the electronic balance 1 has higher precision compared with the original volume metering means, and the solution can be prepared more accurately; further, the electronic balance 1 has high sensitivity (or low detection limit), and can measure a very small amount of liquid with high accuracy, and therefore is more suitable for preparing a solution having a very low concentration.
So far, the technical solution of the present invention has been described with reference to the accompanying drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Description of the reference numerals
First liquid inlet device 3
Second liquid inlet device 4
Second liquid inlet 41
Control system 5
Solvent liquid storage tank 6
Mother liquor storage tank 7
Standard sample solution storage tank 8
First reagent liquid storage tank 6-1
Second reagent reservoir 7-1
Third reagent liquid storage tank 8-1
Claims (10)
1. A water quality analyzer comprises
A container;
a liquid inlet device communicated with the container and used for adding different types of liquid into the container,
it is characterized by also comprising the following steps of,
the electronic balance is used for bearing the container and weighing the container and the liquid in the container;
and the information output module is arranged on the electronic balance and outputs the information obtained by the electronic balance.
2. The water quality analyzer of claim 1, wherein the liquid inlet device is in communication connection with the electronic balance through the information output module.
3. The water quality analyzer according to claim 1 or 2, further comprising,
and the control system is in communication connection with the electronic balance and the liquid inlet device respectively.
4. A water quality analyzer according to claim 1 or 2,
the container comprises a first liquid inlet and a second liquid inlet;
the liquid inlet device comprises:
a first liquid inlet device communicated with the first liquid inlet of the container,
and the second liquid inlet device is communicated with the second liquid inlet of the container.
5. The water quality analyzer of claim 4,
the water quality analyzer also comprises a water quality analyzer,
the solvent liquid storage tank is communicated with the inlet of the first liquid inlet device;
and the mother liquor storage tank is communicated with the inlet of the second liquid inlet device.
6. The water quality analyzer of claim 5,
the water quality analyzer also comprises a water quality analyzer,
and the standard sample solution storage tank is communicated with the inlet of the second liquid inlet device.
7. The water quality analyzer of claim 6,
the water quality analyzer also comprises a water quality analyzer,
the first reagent liquid storage tank is communicated with an inlet of the first liquid inlet device;
and the second reagent liquid storage tank is communicated with the inlet of the second liquid inlet device.
8. The water quality analyzer of claim 7, further comprising
And the first switching valve is arranged on the inlet side of the first liquid inlet device and used for switching the communication between the solvent liquid storage tank or the first reagent liquid storage tank and the first liquid inlet device.
9. The water quality analyzer of claim 7, further comprising
And the second switching valve is arranged on the inlet side of the second liquid inlet device and used for switching the communication between the mother liquid storage tank, the standard sample solution storage tank or the second reagent storage tank and the second liquid inlet device.
10. The water quality analyzer of claim 4, wherein the first inlet device is a peristaltic pump and the second inlet device is an electronic syringe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922113977.5U CN211718259U (en) | 2019-11-29 | 2019-11-29 | Water quality analyzer |
| JP2020002353U JP3228773U (en) | 2019-11-29 | 2020-06-17 | Water quality analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922113977.5U CN211718259U (en) | 2019-11-29 | 2019-11-29 | Water quality analyzer |
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| Publication Number | Publication Date |
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| CN211718259U true CN211718259U (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922113977.5U Active CN211718259U (en) | 2019-11-29 | 2019-11-29 | Water quality analyzer |
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| JP (1) | JP3228773U (en) |
| CN (1) | CN211718259U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115575187B (en) * | 2022-10-08 | 2023-04-25 | 马鞍山市桓泰环保设备有限公司 | Water quality analyzer feed liquor compensation control system |
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2019
- 2019-11-29 CN CN201922113977.5U patent/CN211718259U/en active Active
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- 2020-06-17 JP JP2020002353U patent/JP3228773U/en active Active
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