CN211905238U - Shunting and liquid inlet device of liquid chromatograph for surfactant detection - Google Patents
Shunting and liquid inlet device of liquid chromatograph for surfactant detection Download PDFInfo
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- CN211905238U CN211905238U CN202020503806.3U CN202020503806U CN211905238U CN 211905238 U CN211905238 U CN 211905238U CN 202020503806 U CN202020503806 U CN 202020503806U CN 211905238 U CN211905238 U CN 211905238U
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Abstract
A shunting and liquid inlet device of a liquid chromatograph for detecting a surfactant comprises a three-way valve, a liquid inlet pipeline, a shunting pipeline I and a shunting pipeline II; the liquid inlet pipeline, the flow dividing pipeline I and the flow dividing pipeline II are respectively embedded and connected to the liquid inlet, the liquid outlet I and the liquid outlet II through grooves, and a filtering device is arranged on the liquid inlet pipeline; the liquid storage bottle is communicated with the liquid inlet through a liquid inlet pipeline under the action of the switching valve and the high-pressure pump, the first liquid outlet is communicated with the chromatographic column through a first shunting pipeline, and the second liquid outlet is communicated with the waste liquid bottle through a second shunting pipeline. Surfactant nature for detection liquid chromatograph's reposition of redundant personnel inlet means, simple structure to the flow that gets into the chromatographic column is adjusted to the reposition of redundant personnel feed liquor, adjusts the excessive advance kind or too high velocity of flow, guarantees the normal work of chromatographic column, has improved detection accuracy and detection efficiency.
Description
Technical Field
The utility model relates to a liquid chromatograph technical field, concretely relates to surfactant detection is with liquid chromatograph's reposition of redundant personnel inlet means.
Background
Surfactant (surfactant) refers to a substance which has fixed hydrophilic and lipophilic groups, can be aligned on the surface of a solution, and can significantly reduce the surface tension. It is a large class of organic compounds, and the properties of the compounds are very characteristic, and the compounds are very flexible and wide in application and have great practical value and theoretical significance. The liquid chromatograph is one of the important detecting instruments for the surfactant. The liquid chromatograph is an instrument which firstly separates a mixture and then analyzes and identifies the mixture by utilizing the difference of the distribution ratio of the mixture between two liquids which are liquid-solid or immiscible.
The liquid chromatograph consists of a high-pressure infusion pump, a sample introduction system, a temperature control system, a chromatographic column, a detector, a signal recording system and the like. The mobile phase is pumped into the system by a high-pressure infusion pump, the sample solution enters the mobile phase through a sample injection system and is loaded into the chromatographic column by the mobile phase, and because each component in the sample solution has different distribution coefficients in two phases, when the sample solution moves relatively in the two phases, each component generates a large difference in moving speed through repeated adsorption-desorption distribution processes, the components are separated into single components and sequentially flow out of the column, when the sample solution passes through a detector, the concentration of the sample is converted into an electric signal and transmitted to a signal recording system, and data is printed in a map form.
With the continuous development of science, people have higher and higher requirements on the sensitivity and accuracy in the sample analysis and detection process, and a sample introduction system plays a crucial role in the process. In order to ensure the detection sensitivity of the liquid chromatograph, the sample injection system is required to meet the requirements of accurate sample amount, good repeatability, controllable flow rate and flow velocity, and the like, and the sample injection system in the prior art is not enough in this respect, so that a shunting liquid inlet device of the liquid chromatograph for detecting the surfactant is required to be developed to solve the problems.
Chinese patent application No. CN201721635392.4 discloses a sample introduction chromatographic bottle for a liquid chromatograph, which is an improvement on a sample introduction chromatographic bottle of a sample introduction system, so as to solve the problems of impurity blockage and complex operation of the sample introduction chromatographic bottle, and does not improve the performances of accurate sample amount, good repeatability, controllable flow rate and flow velocity and the like of the sample introduction system.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome not enough above, the utility model aims at providing a surfactant detects with liquid chromatograph's reposition of redundant personnel inlet means, simple structure, convenient operation adjusts the flow that gets into the chromatographic column through the mode of feed liquor reposition of redundant personnel, adjusts excessive appearance or too high velocity of flow, guarantees the normal work of chromatographic column, has improved detection accuracy and detection efficiency, and application prospect is extensive.
The technical scheme is as follows: a shunting and liquid inlet device of a liquid chromatograph for detecting a surfactant comprises a three-way valve, a liquid inlet pipeline, a shunting pipeline I and a shunting pipeline II; the liquid inlet pipeline, the flow dividing pipeline I and the flow dividing pipeline II are respectively embedded and connected to the liquid inlet, the liquid outlet I and the liquid outlet II through grooves, and a filtering device is arranged on the liquid inlet pipeline; the liquid storage bottle is communicated with the liquid inlet through a liquid inlet pipeline under the action of the switching valve and the high-pressure pump, the first liquid outlet is communicated with the chromatographic column through a first shunting pipeline, and the second liquid outlet is communicated with the waste liquid bottle through a second shunting pipeline.
Surfactant nature for detection liquid chromatograph's reposition of redundant personnel inlet means, simple structure, convenient operation adjusts the flow that gets into the chromatographic column through the mode of reposition of redundant personnel, adjusts the excessive velocity of flow of advancing kind or being too high, guarantees the normal work of chromatographic column, has improved detection accuracy and detection efficiency.
The working principle is as follows: surfactant detection sample stoste is placed in the stock solution bottle, and the stoste gets into the feed liquor pipeline under the effect of diverter valve and high-pressure pump, for the impurity that contains in the filtration stoste, is equipped with filter equipment on the feed liquor pipeline, filters the impurity in the stoste, is favorable to subsequent separation effect. The valve body of the three-way valve is provided with three ports, one port is used for feeding liquid, the other port is used for discharging liquid, the liquid inlet is used for feeding liquid, the liquid outlet is used for discharging liquid, and the liquid outlet is used for discharging liquid.
Furthermore, the above-mentioned split liquid inlet device of the liquid chromatograph for detecting the surfactant is provided with a control valve for controlling the flow rate on the liquid inlet pipeline.
The control valve for controlling the flow rate is arranged on the liquid inlet pipeline, so that the flow rate can be effectively controlled, and the stability of liquid inlet is improved.
Furthermore, in the above-mentioned liquid separation and inlet device of the liquid chromatograph for detecting a surfactant, the control valve is an electromagnetic valve.
Furthermore, according to the shunting liquid inlet device of the liquid chromatograph for detecting the surfactant, a pressure stabilizing valve is arranged on the first shunting pipeline.
Because the pressure change can influence the separation effect of the chromatographic column, a pressure stabilizing valve is arranged on the first flow dividing pipeline, so that the pressure of the chromatographic column is kept constant while the flow speed is regulated.
Furthermore, the above-mentioned split-flow liquid inlet device of the liquid chromatograph for detecting the surfactant is further provided with a thermostat on the liquid inlet pipeline.
Further, in the split-flow liquid inlet device of the liquid chromatograph for detecting the surfactant, a vacuum degasser is further arranged on the liquid inlet pipeline; the thermostat, the vacuum degasser, the control valve and the filtering device are arranged on the liquid inlet pipeline and are sequentially arranged between the high-pressure pump and the liquid inlet according to the sequence.
The thermostat and the vacuum degasser are arranged to ensure that the stock solution of the surfactant detection sample entering the chromatographic column keeps a set temperature and no bubble exists inside the stock solution, thereby being beneficial to the subsequent analysis effect.
Further, in the above-mentioned liquid chromatograph for detecting a surfactant, the aperture of the second diversion pipeline is larger than the aperture of the first diversion pipeline.
The caliber of the second shunt pipeline is larger than that of the first shunt pipeline, the discharge capacity of the second shunt pipeline can be larger than the sample injection flow of the first shunt pipeline, the pressure fluctuation of the chromatographic column due to bottleneck effect can be avoided, and the pressure fluctuation of the chromatographic column can be further avoided.
Further, foretell liquid chromatograph's for surfactant detection reposition of redundant personnel inlet means, filter equipment includes water inlet, upper portion, first filter element, middle part, second filter element, lower part, delivery port, water inlet, upper portion, first filter element, middle part, second filter element, lower part, delivery port are from last to installing down in proper order.
Filter equipment, the mode of using the filter element is more free, the porosity of first filter element, second filter element is selected according to the nature of test sample itself, the installation, dismantle, change the convenience, can abluent very thoroughly, be difficult for blockking up.
The utility model has the advantages that:
(1) the utility model discloses a surfactant detection is with reposition of redundant personnel inlet means of liquid chromatograph, simple structure, convenient operation adjusts the flow that gets into the chromatographic column through the mode of reposition of redundant personnel inlet liquid, adjusts excessive introduction or too high velocity of flow, guarantees the normal work of chromatographic column, has improved detection accuracy and detection efficiency;
(2) the utility model discloses a surface active agent detects with reposition of redundant personnel inlet means of liquid chromatograph is equipped with filter equipment, filters the impurity in the stoste, is favorable to subsequent separation effect, and filter equipment uses the mode of filter element more freely, and the porosity of first filter element, second filter element is selected according to the nature of test sample itself, and installation, dismantlement, change convenience can wash very thoroughly, is difficult for blockking up;
(3) surfactant detection is with liquid chromatograph's reposition of redundant personnel inlet means is provided with thermostat, vacuum degasser, control valve, surge damping valve etc. in the adjustment flow rate, maintains chromatographic column pressure invariant to guarantee that the stoste that gets into the surfactant detection sample in the chromatographic column keeps the temperature of settlement and inside not have the bubble, be favorable to subsequent analysis effect, application prospect is extensive.
Drawings
Fig. 1 is a schematic view of the overall arrangement of a split liquid inlet device of a liquid chromatograph for surfactant detection according to the present invention;
fig. 2 is a schematic structural diagram of a three-way valve of a split liquid inlet device of a liquid chromatograph for surfactant detection according to the present invention;
fig. 3 is a schematic structural view of a filtering device of a split liquid inlet device of a liquid chromatograph for surfactant detection according to the present invention;
in the figure: the device comprises a three-way valve 1, a valve body 11, a liquid inlet 12, a liquid outlet I13, a liquid outlet II 14, a liquid inlet pipeline 2, a control valve 21, a thermostat 22, a vacuum degasser 23, a flow dividing pipeline I3, a pressure stabilizing valve 31, a flow dividing pipeline II 4, a filtering device 5, a water inlet 51, an upper part 52, a first filter disc 53, a middle part 54, a second filter disc 55, a lower part 56, a water outlet 57, a liquid storage bottle 6, a switching valve 61, a high-pressure pump 62, a chromatographic column 7 and a waste liquid bottle 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The liquid inlet device for a liquid chromatograph for surfactant detection having the above structure shown in fig. 1 and 2 includes a three-way valve 1, a liquid inlet pipeline 2, a first diversion pipeline 3, and a second diversion pipeline 4; a liquid inlet 12, a first liquid outlet 13 and a second liquid outlet 14 are respectively arranged on the front side, the left side and the right side of a valve body 11 of the three-way valve 1, the liquid inlet pipeline 2, the first flow dividing pipeline 3 and the second flow dividing pipeline 4 are respectively connected to the liquid inlet 12, the first liquid outlet 13 and the second liquid outlet 14 in an embedded manner through grooves, and a filtering device 5 is arranged on the liquid inlet pipeline 2; the liquid storage bottle 6 is communicated with the liquid inlet 12 through the liquid inlet pipeline 2 under the action of the switching valve 61 and the high-pressure pump 62, the liquid outlet I13 is communicated with the chromatographic column 7 through the diversion pipeline I3, and the liquid outlet II 14 is communicated with the waste liquid bottle 8 through the diversion pipeline II 4.
Further, a control valve 21 for controlling the flow rate is provided in the liquid inlet line 2. The control valve 21 is an electromagnetic valve. And a pressure stabilizing valve 31 is arranged on the first flow dividing pipeline 3.
Further, a thermostat 22 is disposed on the liquid inlet pipe 2. The liquid inlet pipeline 2 is also provided with a vacuum degasser 23; the thermostat 22, the vacuum degasser 23, the control valve 21, and the filtering device 5 are disposed on the liquid inlet pipe 2 and are disposed in this order between the high-pressure pump 62 and the liquid inlet 12.
Further, the caliber of the second shunt pipeline 4 is larger than that of the first shunt pipeline 3.
Further, the filtering device 5 includes a water inlet 51, an upper portion 52, a first filtering sheet 53, a middle portion 54, a second filtering sheet 55, a lower portion 56, and a water outlet 57, and the water inlet 51, the upper portion 52, the first filtering sheet 53, the middle portion 54, the second filtering sheet 55, the lower portion 56, and the water outlet 57 are sequentially installed from top to bottom.
Examples
The structural basis is as shown in FIGS. 1 to 3.
Surfactant nature for testing liquid chromatograph's reposition of redundant personnel inlet means, simple structure, convenient operation adjusts the flow that gets into chromatographic column 7 through the mode of reposition of redundant personnel feed liquor, adjusts the excessive velocity of flow of advancing kind or being too high, guarantees chromatographic column 7's normal work, has improved detection accuracy and detection efficiency.
The working principle is as follows: surfactant detection sample stoste is placed in stock solution bottle 6, and the stoste gets into liquid inlet pipe 2 under the effect of diverter valve 61 and high-pressure pump 62, for the impurity that contains in the filtration stoste, is equipped with filter equipment 5 on liquid inlet pipe 2, filters the impurity in the stoste, is favorable to subsequent separation effect. The valve body 11 of the three-way valve 1 is provided with three ports, one port is used for feeding liquid, the other port is used for feeding liquid, namely a liquid inlet 12, a liquid outlet one 13 and a liquid outlet two 14, when excessive sample feeding and over-high flow rate are faced, stock solution enters from the liquid inlet 12 and flows out from the two liquid outlets one 13 and the liquid outlet two 14 after being accurately shunted by the three-way valve, controllability is strong, the flow rate and the flow rate of the sample feeding liquid after shunting are stable, and normal work of the chromatographic column 7 is guaranteed.
The utility model discloses a surface active agent detects with reposition of redundant personnel inlet means of liquid chromatograph is equipped with filter equipment 5, filters the impurity in the stoste, is favorable to subsequent separation effect, and filter equipment 5 uses the mode of filter element more freely, and the porosity of first filter element 53, second filter element 55 selects according to the nature of test sample itself, and installation, dismantlement, change are convenient, can wash very thoroughly, are difficult for blockking up;
surfactant detection is with liquid chromatograph's reposition of redundant personnel inlet means is provided with thermostat 22, vacuum degasser 23, control valve 21, surge damping valve 31 etc. in the adjustment flow rate, maintains chromatographic column 7 constancy of pressure to guarantee that the stoste that gets into the surfactant detection sample in chromatographic column 7 keeps the temperature of settlement and inside does not have the bubble, is favorable to subsequent analysis effect, and application prospect is extensive.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, the embodiments of the present invention can be arbitrarily combined with each other, and the same shall be regarded as the disclosure of the present invention as long as the idea of the present invention is not violated.
Claims (8)
1. A flow-dividing and liquid-feeding device of a liquid chromatograph for detecting a surfactant is characterized by comprising a three-way valve (1), a liquid feeding pipeline (2), a first flow-dividing pipeline (3) and a second flow-dividing pipeline (4); a liquid inlet (12), a liquid outlet I (13) and a liquid outlet II (14) are respectively arranged on the front side, the left side and the right side of a valve body (11) of the three-way valve (1), the liquid inlet pipeline (2), the shunt pipeline I (3) and the shunt pipeline II (4) are respectively connected to the liquid inlet (12), the liquid outlet I (13) and the liquid outlet II (14) in an embedded manner through grooves, and a filtering device (5) is arranged on the liquid inlet pipeline (2); the liquid storage bottle (6) is communicated with the liquid inlet (12) through the liquid inlet pipeline (2) under the action of the switching valve (61) and the high-pressure pump (62), the liquid outlet I (13) is communicated with the chromatographic column (7) through the shunt pipeline I (3), and the liquid outlet II (14) is communicated with the waste liquid bottle (8) through the shunt pipeline II (4).
2. The split inlet device of a liquid chromatograph for surfactant detection according to claim 1, wherein a control valve (21) for controlling a flow rate is provided in the inlet line (2).
3. The split inlet device of a liquid chromatograph for surfactant detection according to claim 2, wherein the control valve (21) is an electromagnetic valve.
4. The split-flow liquid inlet device of the liquid chromatograph for detecting the surfactant according to claim 1, wherein a pressure maintaining valve (31) is disposed on the first split-flow pipeline (3).
5. The split inlet device of a liquid chromatograph for detecting surfactants according to claim 2, wherein a thermostat (22) is further provided on the inlet line (2).
6. The split-flow liquid inlet device of the liquid chromatograph for detecting the surfactant according to claim 5, wherein a vacuum degasser (23) is further provided on the liquid inlet pipeline (2); the thermostat (22), the vacuum degasser (23), the control valve (21) and the filtering device (5) are arranged on the liquid inlet pipeline (2) and are sequentially arranged between the high-pressure pump (62) and the liquid inlet (12) in this order.
7. The split inlet device of the liquid chromatograph for surfactant detection according to claim 1, wherein an aperture of the split line two (4) is larger than an aperture of the split line one (3).
8. The split-flow inlet device of the liquid chromatograph for surfactant detection according to claim 1, wherein the filtering device (5) comprises a water inlet (51), an upper portion (52), a first filter (53), a middle portion (54), a second filter (55), a lower portion (56), and a water outlet (57), and the water inlet (51), the upper portion (52), the first filter (53), the middle portion (54), the second filter (55), the lower portion (56), and the water outlet (57) are sequentially installed from top to bottom.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114165653A (en) * | 2021-11-04 | 2022-03-11 | 中国工程物理研究院应用电子学研究所 | Multichannel liquid helium transfusion pipe and liquid helium transfusion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114165653A (en) * | 2021-11-04 | 2022-03-11 | 中国工程物理研究院应用电子学研究所 | Multichannel liquid helium transfusion pipe and liquid helium transfusion device |
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