CN218675020U - On-line dilution device for flow injection analyzer - Google Patents
On-line dilution device for flow injection analyzer Download PDFInfo
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- CN218675020U CN218675020U CN202223011453.3U CN202223011453U CN218675020U CN 218675020 U CN218675020 U CN 218675020U CN 202223011453 U CN202223011453 U CN 202223011453U CN 218675020 U CN218675020 U CN 218675020U
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Abstract
The utility model discloses an online diluting device for flowing injection analysis appearance, including the control unit, advance kind unit, mixing unit, two passageway multiple-position switch valve, infusion unit. The technical scheme of the utility model the continuous operation when advancing kind, proportion dilution, output sample has been realized. The utility model discloses a dilute on line to the automation of high concentration sample, dilute the proportion scope big, the accuracy is high and stability is good, device debugging and clean maintenance are convenient, can with the mutual noninterference of mobile injection analysis appearance simultaneous working, satisfy rapid analysis's requirement, have good popularization meaning.
Description
Technical Field
The utility model relates to a flow injection analysis technical field especially relates to an online diluting device for flow injection analysis appearance.
Background
The flow injection analysis is a fast unsteady state analysis method, which mainly comprises the steps of carrying a certain volume of sample with a carrier flow to perform chemical reaction with a reagent in a closed pipeline to generate a mixture with certain absorbance, and detecting the mixture by a photometric detector to form a detection peak shape. Flow injection analysis is widely used in the fields of clinical chemistry, pharmaceutical chemistry, agricultural chemistry, food analysis, metallurgical analysis, environmental analysis, and the like. The existing full-automatic analysis instrument based on the flow injection analysis principle needs to draw a standard curve before detection is carried out each time, and the high-concentration sample to be tested needs to be diluted in advance.
The dilution process of the standard curve or sample is usually carried out manually, using an off-line dilution station or using a dilution device controlled by a proportional solenoid valve. The traditional manual method needs to calculate for many times, an accurate measuring device is needed to dilute the stock solution to the target concentration during operation, the requirement on operators is high, the workload is large, and errors are easy to occur; the offline dilution workstation has complicated processes, low efficiency, high cost and incapability of meeting the requirement of online dilution of samples; the diluting device based on the control of the proportional solenoid valve is not resistant to strong acid and alkali, and the valve core is easy to block due to the physical characteristics of the diluting device, so that the accuracy of a test result is low, the long-term stability is poor, and the material and maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dilution multiple is nimble and the degree of accuracy is high, stability is good while device debugging and washing maintain convenient, simple structure, convenient to use are used for mobile injection analysis appearance's online diluting device.
The utility model relates to an on-line diluting device for a flow injection analyzer, which comprises a control unit, a sample introduction unit, a mixing unit, a two-channel multi-position switching valve and a transfusion unit,
the control unit comprises a sample injector and a transmission device for controlling the sample injector;
the sample injection unit comprises a three-channel multi-position switching valve, a sample injection needle, a sample container, a diluent container and a waste liquid container, wherein a first switching port of the three-channel multi-position switching valve is connected with the sample injection needle, a second switching port of the three-channel multi-position switching valve is connected with the diluent container, and a third switching port of the three-channel multi-position switching valve is connected with the waste liquid container;
the blending unit comprises a first four-channel switching valve, a current-carrying pool and a second four-channel switching valve, a main port of the two-channel multi-position switching valve is connected with the sample injector, a first switching port of the two-channel multi-position switching valve is connected with the main port of the three-channel multi-position switching valve, a second switching port of the two-channel multi-position switching valve is connected with a first switching port of the first four-channel switching valve, a second switching port of the first four-channel switching valve and a second switching port of the second four-channel switching valve are connected through pipelines, a third switching port of the first four-channel switching valve and a first switching port of the second four-channel switching valve are connected with the current-carrying pool, a fourth switching port of the first four-channel switching valve is connected with a fourth switching port of the second four-channel switching valve, and a third switching port of the second four-channel switching valve is connected with the infusion unit.
The utility model discloses an online diluting device for flowing injection analysis appearance, mixing unit still include first solution delay ring and second solution delay ring, and first solution delay ring is the same with second solution delay ring length, the second of first four-channel diverter valve switches the second of port, second four-channel diverter valve switches the second and switches the port and link to each other through second solution delay ring, the fourth of first four-channel diverter valve switches the fourth of port, second four-channel diverter valve switches the port and links to each other through first solution delay ring.
The utility model discloses an online diluting device for flowing injection analysis appearance, the infusion unit is the peristaltic pump.
The technical scheme of the utility model is applicable to the flow injection analysis. The technical scheme of the utility model the continuous operation when advancing kind, proportion dilution, output sample has been realized. The utility model discloses an automatic on-line dilution to high concentration sample, dilution ratio scope is big, the accuracy is high and stability is good, and device debugging and clean maintenance are convenient, can with the mutual noninterference of mobile injection analysis appearance simultaneous working, satisfy rapid analysis's requirement, have good popularization meaning.
Drawings
Fig. 1 is a schematic structural diagram of an on-line dilution device for a flow injection analyzer according to the present invention.
Detailed Description
As shown in figure 1, the utility model discloses an online diluting device for flowing injection analysis appearance, including the control unit 1, advance kind unit 2, mixing unit 3, two passageway multiple bit switch valve 4, infusion unit 5.
The control unit 1 comprises a sample injector 7 and a transmission device 6 for controlling the sample injector, the transmission device 6 can be a motor, the sample injector 7 can be a sleeve piston rod structure for extracting and pushing liquid, and the output end of the motor is connected to the piston rod to control the sample injector to work and stop.
The sample injection unit 2 comprises a three-channel multi-position switching valve 8, a sample injection needle 9, a sample container 10, a diluent container 11 and a waste liquid container 12, wherein a first switching port B1 of the three-channel multi-position switching valve 8 is connected with the sample injection needle 9, a second switching port B2 of the three-channel multi-position switching valve is connected with the diluent container 11, and a third switching port B3 of the three-channel multi-position switching valve is connected with the waste liquid container 12;
the blending unit 3 comprises a first four-channel switching valve 13, a current-carrying pool 15 and a second four-channel switching valve 17, a main port A of the two-channel multi-position switching valve 4 is connected with the sample injector 7, a first switching port A1 of the two-channel multi-position switching valve 4 is connected with a main port B of the three-channel multi-position switching valve 9, a second switching port A2 of the two-channel multi-position switching valve 4 is connected with a first switching port C1 of the first four-channel switching valve 13, a second switching port C2 of the first four-channel switching valve 13 and a second switching port D2 of the second four-channel switching valve 17 are connected through pipelines, a third switching port C3 of the first four-channel switching valve 13 and a first switching port D1 of the second four-channel switching valve are connected with the current-carrying pool 15, a fourth switching port C4 of the first four-channel switching valve is connected with a fourth switching port D4 of the second four-channel switching valve, and a third switching port D3 of the second four-channel switching valve is connected with the fluid-carrying pool 5.
The main port a of the two-channel multi-position switching valve 4 is connected to the sleeve of the sample injector 7, so that the sample injector 7 can absorb the liquid in the sample container 10 or the diluent container 11 through the main port a of the two-channel multi-position switching valve 4, and can also inject the liquid into the homogenizing unit 3 or the liquid in the absorbing and homogenizing unit 3 into the waste liquid container 12.
The utility model discloses an online diluting device for flowing injection analysis appearance, mixing unit 3 still include first solution and detain ring 14 and second solution and detain ring 16, and first solution is detained ring 14 and second solution and is detained ring 16 length the same, the second of first four-channel diverter valve switches port, second four-channel diverter valve switches the second and switches the port and detain the ring through the second solution and link to each other, the fourth of first four-channel diverter valve switches port, second four-channel diverter valve switches the fourth and switches the port and detain the ring through first solution and link to each other.
The four-channel switching valve comprises a valve casing and a valve core, wherein a first switching port, a second switching port, a third switching port and a fourth switching port are arranged on the valve casing, and a first channel and a second channel are rotatably arranged in the valve core. The first channel is used for enabling the first switching port to be communicated with the second switching port or enabling the first switching port to be communicated with the fourth switching port, and the second channel is used for enabling the fourth switching port to be communicated with the third switching port or enabling the third switching port to be communicated with the second switching port.
The utility model discloses an online diluting device for flowing injection analysis appearance, the infusion unit is the peristaltic pump.
The utility model discloses an online diluting device for flowing injection analysis appearance, wherein, the infusion unit is the peristaltic pump that has had on solitary peristaltic pump or the flowing injection analysis appearance.
The utility model discloses an online diluting device for flowing injection analysis appearance, wherein, the connection of above-mentioned spare part is all through the tube coupling, and above-mentioned pipeline is plastic tubing, quartz capsule or glass pipe.
The utility model discloses an online diluting device for flowing injection analysis appearance comprises the control unit, advances kind unit, mixing unit, two passageway multiple-position switch valve and infusion unit. The control unit comprises a sample injector and a transmission device for controlling the sample injector and is used for controlling different liquid flow rates, flow rates and flow directions; the sample injection unit comprises a three-channel multi-position switching valve, a sample injection needle, a sample container, a diluent container and a waste liquid container; the uniform mixing unit comprises a four-channel switching valve, a solution retaining ring and a current-carrying pool and is used for realizing the sufficient mixing and further transmission of the sample and the diluent; the infusion unit is an independent peristaltic pump or an existing peristaltic pump on the flow injection analyzer. The units and the components are communicated with each other through pipelines.
The technical scheme of the utility model is applicable to the flow injection analysis. The technical scheme of the utility model when having realized advancing kind, proportion dilution, output sample continuous operation. The utility model discloses an automatic on-line dilution to high concentration sample, dilution ratio scope is big, the accuracy is high and stability is good, and device debugging and clean maintenance are convenient, can with the mutual noninterference of mobile injection analysis appearance simultaneous working, satisfy rapid analysis's requirement, have good popularization meaning.
The utility model discloses a working process for flowing on-line diluting device of injection analysis appearance contains following step:
step 1: and (5) initializing the process. The control unit and the infusion unit control each liquid to fill the corresponding connecting pipeline;
step 2: and (4) diluting. The control unit controls the sample and the diluent to enter and discharge the sample and the diluent into the blending unit;
and step 3: and (4) an infusion process. The transfusion unit transmits the diluted sample to a flow injection analyzer for subsequent processes;
and 4, step 4: and (5) cleaning. The control unit controls the dilution liquid to be fed in, and the waste liquid is discharged into the waste liquid container after the sample injector is cleaned.
The technical scheme of the utility model can dilute high concentration sample on line, and the injector that is equipped with different specifications can realize carrying out the dilution of arbitrary proportion within 1-1000 times to the sample, and the process is simple, and the result is accurate, and the device has good stability, can realize standard curve's online configuration, can be compatible with the different modules of mobile injection analysis appearance, and degree of automation is high, satisfies rapid analysis's demand.
The utility model provides an online diluting device for flowing injection analysis appearance comprises the control unit 1, advances kind unit 2, mixing unit 3, two passageways multiple-position switch valve 4, infusion unit 5 and connecting line.
The control unit 1 comprises an injector 7 and a transmission 6 for controlling the injector.
The sample injection unit 2 comprises a three-channel multi-position switching valve 8, a sample injection needle 9, a sample container 10, a diluent container 11 and a waste liquid container 12.
The blending unit 3 comprises a first four-channel switching valve 13, a first solution retention ring 14, a carrying pool 15, a second solution retention ring 16 and a second four-channel switching valve 17.
The main port a of the two-channel multi-position switching valve 4 is directly connected with the sample injector 7 or is connected with the sample injector through the connecting pipeline, the first switching port A1 of the two-channel multi-position switching valve 4 is connected with the main port B of the three-channel multi-position switching valve 8 through the connecting pipeline, and the second switching port A2 of the two-channel multi-position switching valve 4 is connected with the first switching port C1 of the first four-channel switching valve 13 through the connecting pipeline.
The infusion unit 5 is a single peristaltic pump or an existing peristaltic pump on a flow injection analyzer.
The first switching port B1 of the three-channel multi-position switching valve 8 is connected to the sample injection needle 9 through the connecting line, the second switching port B2 of the three-channel multi-position switching valve 8 is connected to the diluent container 11 through the connecting line, and the third switching port B3 of the three-channel multi-position switching valve 8 is connected to the waste liquid container 12 through the connecting line.
The second switching ports C2, D2 of the first and second four- channel switching valves 13, 17 are connected to the second solution retention ring 16 through the connection lines, the fourth switching ports C4, D4 of the first and second four- channel switching valves 13, 17 are connected to the first solution retention ring 14 through the connection lines, and the second four-channel switching valve 17 is connected to the infusion unit 5 through the connection lines.
The first solution retention ring 14 and the second solution retention ring 16 are constituted by the same length of the connection pipe.
The connecting pipeline is a plastic pipe, a quartz pipe or a glass pipe.
Experiments for testing various parameters of water samples were conducted by using the example in FIG. 1, in which all the diluents used were ultrapure water having a resistivity of 18.2 M.OMEGA.. Cm (25 ℃ C.). The results are shown in Table 1.
TABLE 1 the utility model discloses an online diluting device is arranged in measuring the result of different parameters in the water sample
The utility model provides a pair of an automatic online diluting device for flowing injection analysis appearance can be compatible with the different method modules of flowing injection analysis appearance, can realize standard curve's online configuration and carry out online dilution to high concentration sample, and the process is simple, and the result is accurate, and the device has good stability, and degree of automation is high, satisfies rapid analysis's demand.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. An on-line dilution device for a flow injection analyzer is characterized by comprising a control unit, a sample introduction unit, a uniform mixing unit, a two-channel multi-position switching valve and a transfusion unit,
the control unit comprises a sample injector and a transmission device for controlling the sample injector;
the sample injection unit comprises a three-channel multi-position switching valve, a sample injection needle, a sample container, a diluent container and a waste liquid container, wherein a first switching port of the three-channel multi-position switching valve is connected with the sample injection needle, a second switching port of the three-channel multi-position switching valve is connected with the diluent container, and a third switching port of the three-channel multi-position switching valve is connected with the waste liquid container;
the blending unit comprises a first four-channel switching valve, a current-carrying pool and a second four-channel switching valve, a main port of the two-channel multi-position switching valve is connected with the sample injector, a first switching port of the two-channel multi-position switching valve is connected with the main port of the three-channel multi-position switching valve, a second switching port of the two-channel multi-position switching valve is connected with a first switching port of the first four-channel switching valve, a second switching port of the first four-channel switching valve and a second switching port of the second four-channel switching valve are connected through pipelines, a third switching port of the first four-channel switching valve and a first switching port of the second four-channel switching valve are connected with the current-carrying pool, a fourth switching port of the first four-channel switching valve is connected with a fourth switching port of the second four-channel switching valve, and a third switching port of the second four-channel switching valve is connected with the infusion unit.
2. The online dilution apparatus for a flow injection analyzer according to claim 1, wherein the mixing unit further includes a first solution retention ring and a second solution retention ring, the first solution retention ring and the second solution retention ring have the same length, the second switching port of the first four-channel switching valve and the second switching port of the second four-channel switching valve are connected through the second solution retention ring, and the fourth switching port of the first four-channel switching valve and the fourth switching port of the second four-channel switching valve are connected through the first solution retention ring.
3. The in-line dilution device for a flow injection analyzer of claim 2, wherein the infusion unit is a peristaltic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223011453.3U CN218675020U (en) | 2022-11-13 | 2022-11-13 | On-line dilution device for flow injection analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223011453.3U CN218675020U (en) | 2022-11-13 | 2022-11-13 | On-line dilution device for flow injection analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN218675020U true CN218675020U (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223011453.3U Active CN218675020U (en) | 2022-11-13 | 2022-11-13 | On-line dilution device for flow injection analyzer |
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| Country | Link |
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| CN (1) | CN218675020U (en) |
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- 2022-11-13 CN CN202223011453.3U patent/CN218675020U/en active Active
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