CN216560521U - Water sample diluting device for monitoring high-concentration water quality - Google Patents
Water sample diluting device for monitoring high-concentration water quality Download PDFInfo
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- CN216560521U CN216560521U CN202120611723.0U CN202120611723U CN216560521U CN 216560521 U CN216560521 U CN 216560521U CN 202120611723 U CN202120611723 U CN 202120611723U CN 216560521 U CN216560521 U CN 216560521U
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Abstract
The utility model relates to a water sample diluting device for monitoring high-concentration water quality, which comprises a mixing metering cup, a precise metering pump and an overflow cup, wherein a water sample electromagnetic valve is connected between the mixing metering cup and the precise metering pump, a three-way electromagnetic valve is connected between the precise metering pump and the overflow cup, the mixing metering cup is connected with a pure water supply assembly, the mixing metering cup is also connected with a sample supply electromagnetic valve, and the bottom of the mixing metering cup is provided with a magnetic stirrer. The device is convenient for diluting the water with larger substance concentration, and can ensure that the index of the water sample is effectively measured in the measuring range of a monitoring instrument when a certain index of the water sample is monitored; pure water for dilution is metered by adopting equal constant volume, so that the repeatability is high; the dilution process can be started only by sending a trigger signal by a monitoring instrument, is simple and quick, and can meet the matched use of most water quality on-line monitoring instruments or water quality laboratory detection instruments.
Description
Technical Field
The utility model relates to the field of environmental water quality monitoring or water quality monitoring of boiler water vapor systems in electric power, steel and chemical industry, in particular to a water sample diluting device for large-concentration water quality monitoring.
Background
At present, in the process of monitoring the environmental water quality or monitoring the water quality of a boiler water vapor system in the fields of electric power, steel, chemical engineering and the like, when a certain index to be detected of the water quality exceeds the normal measurement range of an instrument, for a laboratory instrument, a tester needs to manually dilute a water sample and then measure the water sample, and the whole measurement process consumes time and labor;
for an online monitoring instrument, when the index of water quality to be measured exceeds the normal measurement range of the instrument, the monitoring value cannot be used as reference data to guide the production process or emission index and the like, so that the normal measurement process is influenced. At present, no laboratory instrument or online water quality monitoring instrument independent of a detection instrument is used for completing the dilution work of a large-concentration water sample. Therefore, it is very important to design a water sample diluting device for monitoring water quality with large concentration.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides a water sample diluting device for monitoring high-concentration water quality.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a water sample diluting device for monitoring of large concentration water quality, includes mixed metering cup, accurate measuring pump and overflow cup, connect the water sample solenoid valve between mixed metering cup and the accurate measuring pump, connect three way solenoid valve between accurate measuring pump and the overflow cup, the pure water supply unit is connected to the mixed metering cup, and the mixed metering cup still connects the sample solenoid valve that supplies, mixed metering cup's bottom installation magnetic stirrers.
Further, the pure water supply assembly comprises a pure water inlet pipe communicated with the mixing metering cup, a pure water valve and a flow meter which are arranged on the pure water inlet pipe.
Further, a sampling pipe is connected to the mixing measuring cup.
Furthermore, an overflow pipe is connected between the bottom and the top of the mixing measuring cup, and a liquid discharge electromagnetic valve is installed on the overflow pipe.
Furthermore, a metering electromagnetic valve is arranged on the mixing metering cup.
Further, the top of overflow cup is connected with the water sample exit tube, and the water sample is gone into the pipe to the bottom of overflow cup.
Furthermore, the precision metering pump, the sample supply electromagnetic valve, the magnetic stirrer, the pure water valve, the flowmeter, the liquid discharge electromagnetic valve and the metering electromagnetic valve are connected with the controller.
Further, the controller is of a PLC AX2N-128MR/MT model.
The utility model has the beneficial effects that: the device is convenient for diluting water with larger substance concentration, and can ensure that the index of the water sample is effectively measured within the range of a monitoring instrument when a certain index of the water sample is monitored; pure water for dilution is metered by adopting equal constant volume, so that the repeatability is high; the dilution process can be started only by sending a trigger signal by a monitoring instrument, is simple and quick, and can meet the matched use of most water quality on-line monitoring instruments or water quality laboratory detection instruments.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
fig. 2 is a schematic structural diagram of the controller according to the present invention.
In the figure, 1, a pure water valve, 2, a flowmeter, 3, a pure water inlet pipe, 4, a sampling pipe, 5, a water sample electromagnetic valve, 6, a three-way electromagnetic valve, 7, an overflow cup, 8, a water sample outlet pipe, 9, a water sample inlet pipe, 10, a precision metering pump, 11, an overflow pipe, 12, a metering electromagnetic valve, 13, a liquid discharge electromagnetic valve, 14, a sample supply electromagnetic valve, 15, a magnetic stirrer, 16, a mixing metering cup, 17 and a controller are arranged.
Detailed Description
As shown in figure 1 and figure 2, the water sample diluting device for large-concentration water quality monitoring comprises a mixing measuring cup 16, a precision measuring pump 10 and an overflow cup 7, a water sample electromagnetic valve 5 is connected between the mixing measuring cup 16 and the precision measuring pump 10, a three-way electromagnetic valve 6 is connected between the precision measuring pump 10 and the overflow cup 7, the mixing measuring cup 16 is connected with a pure water supply assembly, the mixing measuring cup 16 is further connected with a sample supply electromagnetic valve 14, and a magnetic stirrer 15 is installed at the bottom of the mixing measuring cup 16.
Further, the pure water supply unit includes a pure water inlet pipe 3 communicating with the mixing measuring cup 16, a pure water valve 1 and a flow meter 2 mounted on the pure water inlet pipe 3. The mixing measuring cup 16 is connected with the sampling pipe 4.
An overflow pipe 11 is connected between the bottom and the top of the mixing measuring cup 16, a liquid discharge electromagnetic valve 13 is arranged on the overflow pipe 11, and a measuring electromagnetic valve 12 is arranged on the mixing measuring cup 16.
Further, a water sample outlet pipe 8 is connected to the top of the overflow cup 7, and a water sample inlet pipe 9 is connected to the bottom of the overflow cup 7.
The precision metering pump 10, the sample supply electromagnetic valve 14, the magnetic stirrer 15, the pure water valve 1, the flowmeter 2, the liquid discharge electromagnetic valve 13 and the metering electromagnetic valve 12 are connected with a controller 17, and the model of the controller 17 is PLC AX2N-128 MR/MT.
The controller 17 receives an external signal triggered command or operates a screen button to start a dilution process, and the dilution process is realized by controlling sequential actions of a pump and a valve in the device after the dilution process is started. After the dilution process is started, pure water enters a metering mixing cup 16 through a pure water valve 1, a flow meter 2 and a pure water inlet pipe 3; the metering electromagnetic valve 12 is opened to discharge redundant pure water to realize the metering of the pure water with a fixed volume, the metering volume is determined by the height of the metering electromagnetic valve 12, and the overflow pipe 11 plays a role in safety protection; a water sample enters the overflow cup 7 through the water sample inlet pipe 9 and is discharged through the water sample outlet pipe 8 so as to keep the freshness of the water sample; the three-way electromagnetic valve 6 is opened, and the precision injection pump extracts 7 the water sample in the overflow cup; the water sample electromagnetic valve 5 is opened, the three-way electromagnetic valve 6 is closed, the precise metering pump 10 discharges a certain amount of sample water into the mixing and metering cup 16 in proportion, and the magnetic stirrer 15 is opened to fully stir and uniformly mix the metered pure water and the water sample; the uniformly mixed water sample is extracted to the instrument to be detected through the sampling pipe 4, or the uniformly mixed water sample is discharged to the instrument to be detected for monitoring in a mode of opening the sample supply electromagnetic valve 14; the water sample electromagnetic valve 5 is opened or closed, and the precise metering pump 10 is used for pumping and discharging in a reciprocating manner, so that the residual water sample waste liquid in the previous dilution period in the pipeline is realized.
The device is convenient for diluting the water with larger substance concentration, and can ensure that the index of the water sample is effectively measured in the measuring range of a monitoring instrument when a certain index of the water sample is monitored; pure water for dilution is metered by adopting equal constant volume, so that the repeatability is high; the dilution process can be started only by sending a trigger signal by a monitoring instrument, is simple and quick, and can meet the matched use of most water quality on-line monitoring instruments or water quality laboratory detection instruments.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a water sample diluting device for monitoring of large concentration water quality, includes mixed metering cup, accurate measuring pump and overflow cup, its characterized in that, connect the water sample solenoid valve between mixed metering cup and the accurate measuring pump, connect three way solenoid valve between accurate measuring pump and the overflow cup, the pure water supply unit is connected to the mixed metering cup, and the sample solenoid valve is still connected to the mixed metering cup, and magnetic stirrers is installed to the bottom of mixed metering cup.
2. The water sample diluting device for large concentration water quality monitoring as claimed in claim 1, wherein the pure water supply assembly comprises a pure water inlet pipe communicated with the mixing and metering cup, a pure water valve and a flow meter mounted on the pure water inlet pipe.
3. A water sample diluting device for large concentration water quality monitoring as claimed in claim 2, wherein the mixing measuring cup is connected with a sampling pipe.
4. A water sample diluting device for monitoring high-concentration water quality as claimed in claim 3, wherein an overflow pipe is connected between the bottom and the top of the mixing and metering cup, and a liquid discharge electromagnetic valve is mounted on the overflow pipe.
5. A water sample diluting device for large concentration water quality monitoring as claimed in claim 4, wherein the mixing and metering cup is provided with a metering electromagnetic valve.
6. The water sample diluting device for large-concentration water quality monitoring as claimed in claim 4, wherein the top of the overflow cup is connected with a water sample outlet pipe, and the bottom of the overflow cup is connected with a water sample inlet pipe.
7. The water sample diluting device for large-concentration water quality monitoring as claimed in claim 5, wherein the precision metering pump, the sample supply solenoid valve, the magnetic stirrer, the pure water valve, the flow meter, the liquid discharge solenoid valve and the metering solenoid valve are connected with a controller.
8. The water sample diluting device for large-concentration water quality monitoring as claimed in claim 7, wherein the controller is PLC AX2N-128MR/MT in model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120611723.0U CN216560521U (en) | 2021-03-25 | 2021-03-25 | Water sample diluting device for monitoring high-concentration water quality |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120611723.0U CN216560521U (en) | 2021-03-25 | 2021-03-25 | Water sample diluting device for monitoring high-concentration water quality |
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| CN216560521U true CN216560521U (en) | 2022-05-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115876555A (en) * | 2023-03-03 | 2023-03-31 | 北京华科仪科技股份有限公司 | Pretreatment device and method for on-line monitoring of mineral leaching solution |
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2021
- 2021-03-25 CN CN202120611723.0U patent/CN216560521U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115876555A (en) * | 2023-03-03 | 2023-03-31 | 北京华科仪科技股份有限公司 | Pretreatment device and method for on-line monitoring of mineral leaching solution |
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