CN210166404U - Temperature control liquid inlet device of series continuous flow analyzer - Google Patents
Temperature control liquid inlet device of series continuous flow analyzer Download PDFInfo
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- CN210166404U CN210166404U CN201920438850.8U CN201920438850U CN210166404U CN 210166404 U CN210166404 U CN 210166404U CN 201920438850 U CN201920438850 U CN 201920438850U CN 210166404 U CN210166404 U CN 210166404U
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Abstract
The utility model discloses a temperature control liquid inlet device of a series continuous flow analyzer, which comprises a reagent tube, a reagent tube holder, a liquid medium, a temperature-adjustable pre-adjusting heater, a low-temperature heating sleeve, a temperature sensor, a liquid medium temperature sensor, a multi-channel digital display temperature controller and a container; the container is filled with a liquid medium, the front section of the reagent tube is fixed in the container through the reagent tube holder, and the rear section of the reagent tube is wrapped by the low-temperature heating sleeve and the temperature sensor. The utility model discloses simple structure, low cost, long service life, it is effectual to keep warm, and this series connection control by temperature change inlet means's application prevents effectively that the feed liquor reagent from because of low temperature devitrification in the pipeline that flows, and then is showing accuracy and the exactness that improves the testing result, guarantees the smooth operation of detection, and the security is good moreover, and easy to operate, instrument when the laboratory that is particularly suitable for not having the constant temperature environment is in low temperature weather advances the appearance, has good application prospect.
Description
Technical Field
The utility model belongs to the technical field of chemical analysis detects, specifically a temperature control inlet means of series connection continuous flow analysis appearance.
Background
The continuous flow analyzer is a device which completes the physical mixing and chemical reaction of reagents in pipelines at the same time and then performs analysis on the basis of a steady state condition. The solubility of the liquid solution at different temperature conditions has a direct influence on the detection result of the experiment. When the external environment temperature is lower, the solubility of the reaction substance in a liquid system is reduced, so that the reaction is incomplete, even crystals are separated out to cause blockage of the pump tube in different degrees, the detection value deviation is overlarge, the baseline drifts, or the pump tube is cracked due to overlarge pressure generated by blockage, and the like, so that the normal operation of the instrument detection is influenced or stopped. There is no good solution in the prior art as to how to overcome this problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of overlarge deviation of a sample detection result, base line drift and even blockage or crack of a pump pipe caused by crystallization of a reagent due to too low temperature when a sample is detected by a continuous flow method; the temperature control liquid inlet device of the series continuous flow analyzer is provided to ensure that a reaction solution is kept at the temperature of a reaction system at low temperature, prevent the phenomena of incomplete reaction, pump pipe blockage or crack caused by crystallization due to low temperature before a reagent enters a reaction heating tank, and improve the success rate of detecting samples by the analyzer.
In order to solve the above problems, the present invention adopts the following technique and method:
a temperature control liquid inlet device of a series continuous flow analyzer comprises a reagent tube, a reagent tube holder, a liquid medium, a temperature-adjustable pre-adjusting heater, a low-temperature heating sleeve, a temperature sensor, a liquid medium temperature sensor, a multi-channel digital display temperature controller and a container; the container is filled with a liquid medium, the front section of the reagent tube is fixed inside the container through the reagent tube holder, the rear section of the reagent tube is wrapped with a low-temperature heating sleeve and a temperature sensor, the bottom in the container is provided with a temperature-adjustable pre-adjusting heater, and the inner wall of the container is connected with the liquid medium temperature sensor.
Further, the pipe diameter of the reagent pipe is consistent with that of the reagent pipe of the serial continuous flow analyzer; the flow path is smooth when the continuous flow analyzer is used for detection, and the continuous flow analyzer is transparent, anticorrosive and hard, can be immersed in a liquid medium, is convenient for observing the state of the reagent and can resist the corrosion of the reagent at the temperature below 100 ℃.
Further, the reagent tube holder and the reagent tube are firmly and fixedly connected, are waterproof and corrosion-resistant, and can resist corrosion of liquid media.
Furthermore, the liquid medium is a transparent medium, so that the state of the reagent can be observed conveniently, and the physical and chemical properties are stable at the temperature of below 100 ℃.
Furthermore, the temperature-adjustable pre-temperature-adjusting heater is arranged at the bottom of the container, can resist the corrosion of the liquid medium and can sense the temperature feedback of the liquid medium temperature sensor in real time; the liquid medium temperature sensor is respectively connected with the multichannel digital display temperature controller through signal wires, and the temperature below 100 ℃ is accurately regulated and controlled through the multichannel digital display temperature controller.
Further, the low temperature heating jacket closely wraps up on the outer wall of reagent pipe, can respond to the temperature feedback of temperature-sensing ware in real time, and the temperature-sensing ware is connected with multichannel digital display temperature controller respectively through the signal line, and through the accurate regulation and control below 100 degrees temperature of multichannel digital display temperature controller.
Furthermore, the temperature sensor is arranged on the reagent tube behind the low-temperature heating sleeve, can sense the temperature of the reagent flowing out of the low-temperature heating sleeve in real time, and accurately regulates and controls the temperature below 100 ℃ through the multichannel digital display temperature controller.
Furthermore, the liquid medium temperature sensor can resist the corrosion of the liquid medium and sense the temperature of the liquid medium in real time, and the temperature below 100 ℃ is accurately regulated and controlled through the multichannel digital display temperature controller.
Furthermore, the multichannel digital display temperature controller senses temperature feedback from the temperature sensor and the liquid medium temperature sensor in real time, and displays and controls multichannel temperature through switching.
Further, the container adopts waterproof, anticorrosive and transparent material to make, can long-time splendid attire water and liquid medium, is convenient for observe the reagent state, and can hold multiunit reagent pipe simultaneously.
The utility model discloses a reagent pipe, reagent pipe holder, liquid medium, adjustable temperature's pre-tempering heater, the low temperature heating jacket, the temperature-sensing ware, liquid medium temperature-sensing ware, multichannel digital display temperature controller and container integrated design form, moreover, the steam generator is simple in structure, low cost, long service life, it is effectual to keep warm, this series connection control by temperature change inlet means's application can effectively prevent that the feed liquor reagent from devitrifying in the flow pipeline because of low temperature, and then show accuracy and the essence that improves the testing result, guarantee the smooth operation of detection, and the security is good, easy to operate, instrument introduction when the laboratory that is particularly suitable for the non-constant temperature environment is in low temperature weather, especially to detecting the experimental items that precision required height, good application prospect has.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
fig. 1 is a schematic structural view of the present invention;
in the figure: 1-reagent tube, 2-reagent tube holder, 3-liquid medium, 4-temperature-adjustable pre-temperature-adjusting heater, 5-low-temperature heating jacket, 6-temperature sensor, 7-liquid medium temperature sensor, 8-multichannel digital display temperature controller, and 9-container.
FIG. 2 is a flow chart of an apparatus for measuring total plant alkaloids in tobacco and tobacco products by AA3 continuous flow analyzer.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly and clearly defined;
as shown in fig. 1, the temperature control liquid inlet device of a serial continuous flow analyzer in the technical scheme of the present invention comprises a reagent tube 1, a reagent tube holder 2, a liquid medium 3, a temperature-adjustable pre-temperature-adjusting heater 4, a low-temperature heating jacket 5, a temperature sensor 6, a liquid medium temperature sensor 7, a multichannel digital display temperature controller 8 and a container 9; the container 9 is filled with a liquid medium 3, the front section of the reagent tube 1 is fixed in the container 9 through the reagent tube holder 2, the rear section of the reagent tube 1 is wrapped by the low-temperature heating sleeve 5 and the temperature sensor 6, the bottom of the container 9 is provided with the temperature-adjustable pre-temperature-adjusting heater 4, and the inner wall of the container 9 is connected with the liquid medium temperature sensor 7.
The pipe diameter of the reagent pipe 1 is consistent with that of a reagent pipe of a serial continuous flow analyzer; the flow path is smooth when the continuous flow analyzer is used for detection, and the continuous flow analyzer is transparent and corrosion-resistant, is convenient for observing the state of the reagent and can resist the corrosion of the reagent at the temperature below 100 ℃.
The reagent tube holder 2 and the reagent tube 1 are firmly and fixedly connected, are waterproof, anticorrosive and hard, can be immersed in a liquid medium, and can resist the corrosion of the liquid medium.
The liquid medium 3 is a transparent medium, so that the state of the reagent can be observed conveniently, and the physical and chemical properties are stable at the temperature of below 100 ℃.
The temperature-adjustable pre-temperature-adjusting heater 4 is arranged at the bottom of the container 9, can resist the corrosion of the liquid medium 3 and can sense the temperature feedback of the liquid medium temperature sensor in real time; the liquid medium temperature sensor is respectively connected with the multichannel digital display temperature controller through signal wires, and the temperature below 100 ℃ is accurately regulated and controlled through the multichannel digital display temperature controller.
The low-temperature heating jacket 5 wraps up on the outer wall of reagent pipe 1 closely, low-temperature heating jacket 5 and temperature-sensing ware 6 are connected with multichannel digital display temperature controller 8 respectively through the signal line, low-temperature heating jacket 5 can respond to the temperature feedback of temperature-sensing ware 6 in real time, and through the accurate regulation and control below 100 degrees temperature of multichannel digital display temperature controller 8.
The temperature sensor 6 is arranged on the reagent tube 1 behind the low-temperature heating sleeve 5, can sense the temperature of the reagent flowing out of the low-temperature heating sleeve 5 in real time, and accurately regulates and controls the temperature below 100 ℃ through the multi-channel digital display temperature controller 8.
The liquid medium temperature sensor 7 can resist the corrosion of the liquid medium 3 and sense the temperature of the liquid medium 3 in real time, and the temperature below 100 ℃ is accurately regulated and controlled by the multi-channel digital display temperature controller 8.
The multichannel digital display temperature controller 8 senses temperature feedback from the temperature sensor 6 and the liquid medium temperature sensor 7 in real time, and displays and controls multichannel temperature through switching.
Container 9 adopts waterproof, anticorrosive and transparent material to make, can long-time splendid attire water and liquid medium, is convenient for observe the reagent state, and can hold multiunit reagent pipe simultaneously.
Example 1
The AA3 chemical flow analyzer is not provided with a constant temperature system or a temperature control liquid inlet device and is in a low temperature state of 5-15 ℃.
Example 2
An AA3 chemical flow analyzer without a temperature control liquid inlet device and under the constant temperature state of 24-26 ℃ controlled by an air conditioner.
Example 3
There is no constant temperature system, using the temperature control liquid inlet device shown in fig. 1, AA3 chemical flow analyzer in the state of low temperature of 5-15 ℃.
Application examples
The total plant alkaloid detection experiment in tobacco and tobacco products is carried out according to the instruments and environmental conditions of examples 1, 2 and 3.
1. Sample processing
Weighing 0.25g of tobacco powder samples prepared by YC/T31 tobacco and tobacco product samples and prepared by a moisture determination oven method and used for determining moisture, respectively placing the three parts into a 150mL triangular flask, adding 50mL 5% acetic acid water solution, and extracting for 30min by oscillating on an oscillator (the rotating speed is more than 150 r/min); the extract was filtered through quick qualitative filter paper, the first 2-3mL of filtrate was discarded, and the subsequent filtrates were collected in sampling bottles for analysis under the conditions of examples 1, 2, and 3, respectively.
2. Sample detection
According to the method for determining the continuous flow (potassium thiocyanate) of YC/T468-2013 tobacco and tobacco product total plant alkaloid, the detection process is monitored by using a tobacco chemical conventional quality control sample A (hereinafter referred to as quality control sample A) of the national tobacco quality supervision and inspection center in the states of examples 1, 2 and 3, and the quality control sample A is determined once among every 10 other samples.
3. Quantitative process
Respectively taking 2ml of standard working solution with pure nicotine concentrations of 0.50%, 1.00%, 1.50%, 2.00% and 2.50%, respectively, placing the standard working solution in a sampling bottle of a continuous flow analyzer, detecting the mixed standard working solution, and taking the absorbance A as a vertical coordinate and the concentration of the pure nicotine in the mixed standard working solution as a horizontal coordinate to make a standard working curve; the standard working curve should be linear and have a correlation coefficient R2Not less than 0.995. The standard working curve should be made in each experiment, a quality control solution should be added after each sample injection for 20 times, and if the difference between the measured value and the original value exceeds 10%, the standard working curve should be made again。
4. Calculation of results
The results were calculated according to equation (1):
the calculation formula of total plant alkaloid in tobacco and tobacco products is as follows:
in the formula: p-total plant alkaloid test results (%);
c, calculating a standard working curve of the instrument to obtain a result (g/ml);
v, the volume of the extract or the digestive juice is determined by volume (ml);
w-water content (%) of the sample;
m-sample mass (g).
Taking the average value of two parallel measurements as the final measurement result, and accurately measuring the final measurement result to 0.01 mg/kg; the relative mean deviation of the results of the two replicates should be less than 10%.
5. Results and discussion
And comparing the measured values of the quality control sample A in the four-batch sample detection process.
5.1 comparison of devitrification and clogging phenomena in the piping under different examples
In the low-temperature weather of 15-15 ℃, when the constant-temperature liquid inlet device is not used, crystallization and blockage of a pump pipe often occur in the morning and afternoon when the temperature is reduced; in the embodiment 2, the crystallization phenomenon happens occasionally under the condition that the air conditioner is controlled to be at the constant temperature of 24-26 ℃, but the phenomenon of blocking a pump pipe does not happen; in the case of the 5-15 ℃ low-temperature weather, the phenomena of crystallization and pump pipe blockage are avoided after the constant-temperature liquid inlet device is used.
5.2 comparison of the measured values of quality control sample A with the reference values in the different examples
The total phytoalkaloids index of quality control sample a is 1.82%, as can be seen in table 1;
in the embodiment 1, the total measured value of the quality control sample A is low in the low-temperature weather of 5-15 ℃ and when a constant-temperature liquid inlet device is not used, the phenomenon of instantaneous extreme height can occur when a pipeline is blocked, and the extreme difference between the four detection mean values reaches 2.16 percent and is 1.2 times of the labeled value of the quality control sample A; in the embodiment 2, under the constant temperature state of 24-26 ℃ controlled by an air conditioner, the range difference between the four detection mean values is 0.17 percent and accounts for 9.34 percent of the labeled value of the quality control sample A; example 3 in the weather of low temperature of 5-15 ℃, after the constant temperature liquid inlet device is used, the range between the four detection mean values is 0.04 percent and accounts for 2.20 percent of the marked value of the quality control sample A.
It can be seen that: in the weather of low temperature of 5-15 ℃, the accuracy of the measured value is obviously improved after the constant-temperature liquid inlet device is used.
5.3 comparison of the precision of the measurements of quality control sample A in the different examples
As can be seen from table 1; in the embodiment 1, the detection is extremely unstable in the low-temperature weather of 5-15 ℃ and when a constant-temperature liquid inlet device is not used, and the variation coefficient range of the measured values of four batches of quality control samples A is extremely large and is 25.0-76.7%; example 2 under the condition that the air conditioner is controlled at the constant temperature of 24-26 ℃, the variation coefficient range of the measured values of four batches of quality control samples A is 2.3-4.8%; example 3 in the weather of low temperature of 5-15 deg.C, the coefficient of variation of the measured values of four batches of quality control samples A was 0.7-1.5%.
It can be seen that: in the weather of low temperature of 5-15 ℃, the precision of the measured value is obviously improved after the constant-temperature liquid inlet device is used.
TABLE 1 examination results of the examples
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the protection scope of the present invention, therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (10)
1. A temperature control liquid inlet device of a series continuous flow analyzer is characterized by comprising a reagent tube (1), a reagent tube holder (2), a liquid medium (3), a temperature-adjustable pre-temperature-adjusting heater (4), a low-temperature heating sleeve (5), a temperature sensor (6), a liquid medium temperature sensor (7), a multi-channel digital display temperature controller (8) and a container (9); the utility model discloses a temperature-adjustable's reagent tube, including container (9), anterior segment part of reagent tube (1) is fixed inside container (9) through reagent tube holder (2), the parcel has low temperature heating cover (5) and temperature-sensing ware (6) on the back end part of reagent tube (1), temperature-adjustable's temperature pre-adjusting heater (4) are installed to the bottom in container (9), container (9) inner wall connection has liquid medium temperature-sensing ware (7).
2. A temperature controlled liquid inlet means for a serial continuous flow analyzer as claimed in claim 1, wherein: the pipe diameter of the reagent pipe (1) is consistent with that of a reagent pipe of a serial continuous flow analyzer; the flow path is smooth when the continuous flow analyzer is used for detection, and the continuous flow analyzer is transparent, anticorrosive and hard, can be immersed in a liquid medium, is convenient for observing the state of the reagent and can resist the corrosion of the reagent at the temperature below 100 ℃.
3. A temperature controlled liquid inlet means for a serial continuous flow analyzer as claimed in claim 1, wherein: the reagent tube holder (2) and the reagent tube (1) are firmly and fixedly connected, are waterproof and anticorrosive, and can resist corrosion of liquid media.
4. A temperature controlled liquid inlet means for a serial continuous flow analyzer as claimed in claim 1, wherein: the liquid medium (3) is a transparent medium, so that the state of the reagent can be observed conveniently, and the physical and chemical properties are stable at the temperature of below 100 ℃.
5. A temperature controlled liquid inlet means for a serial continuous flow analyzer as claimed in claim 1, wherein: the temperature-adjustable pre-temperature-adjusting heater (4) is arranged at the bottom of the container (9) and can resist the corrosion of the liquid medium (3); the temperature feedback of the liquid medium temperature sensor (7) can be sensed in real time; the liquid medium temperature sensor (7) is respectively connected with the multi-channel digital display temperature controller (8) through signal lines, and the temperature below 100 ℃ is accurately regulated and controlled through the multi-channel digital display temperature controller (8).
6. A temperature controlled liquid inlet means for a serial continuous flow analyzer as claimed in claim 1, wherein: the low-temperature heating sleeve (5) is tightly wrapped on the outer wall of the reagent tube (1) and can sense the temperature feedback of the temperature sensor (6) in real time, the temperature sensor (6) is respectively connected with the multi-channel digital display temperature controller (8) through signal lines, and the temperature below 100 ℃ is accurately regulated and controlled through the multi-channel digital display temperature controller (8).
7. A temperature controlled liquid inlet means for a serial continuous flow analyzer as claimed in claim 1, wherein: the temperature sensor (6) is arranged on the reagent tube (1) behind the low-temperature heating sleeve (5), can sense the temperature of the reagent flowing out of the low-temperature heating sleeve (5) in real time, and accurately regulates and controls the temperature below 100 ℃ through the multi-channel digital display temperature controller (8).
8. A temperature controlled liquid inlet means for a serial continuous flow analyzer as claimed in claim 1, wherein: the liquid medium temperature sensor (7) can resist the corrosion of the liquid medium (3), can sense the temperature of the liquid medium (3) in real time, and can accurately regulate and control the temperature below 100 ℃ through the multi-channel digital display temperature controller (8).
9. A temperature controlled liquid inlet means for a serial continuous flow analyzer as claimed in claim 1, wherein: the multichannel digital display temperature controller (8) senses temperature feedback from the temperature sensor (6) and the liquid medium temperature sensor (7) in real time, and displays and controls multichannel temperature through switching.
10. A temperature controlled liquid inlet means for a serial continuous flow analyzer as claimed in claim 1, wherein: the container (9) is made of waterproof, anticorrosive and transparent materials, can hold water and liquid media for a long time, is convenient for observing the state of the reagent, and can hold a plurality of groups of reagent tubes (1) simultaneously.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031642A (en) * | 2019-04-02 | 2019-07-19 | 云南省烟草质量监督检测站 | A kind of temperature control feeding device for Continuous Flow Analysis instrument of connecting |
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2019
- 2019-04-02 CN CN201920438850.8U patent/CN210166404U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031642A (en) * | 2019-04-02 | 2019-07-19 | 云南省烟草质量监督检测站 | A kind of temperature control feeding device for Continuous Flow Analysis instrument of connecting |
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