阅读说明：本技术 一种温度可调节的离子色谱仪 (Ion chromatograph with adjustable temperature ) 是由 蔡洁云 王惠平 何悦 马静 陈新瑞 顾健龙 刘宇晨 于 2020-03-27 设计创作，主要内容包括：本发明公开了一种温度可调节的离子色谱仪,涉及分析检测设备领域,包括离子色谱仪和温度调节装置,温度调节装置包括压缩机、冷凝器、干燥过滤器、毛细管和六个第一蒸发器,压缩机的出液口与冷凝器的进液口连通,冷凝器的出液口与干燥过滤器的进液口连通,干燥过滤器的出液口与毛细管的进液口连通,毛细管的出液口与第一蒸发器的进液口连通,每个第一蒸发器的出液口与压缩机的进液口连通,六个第一蒸发器依次设置于样品盘的底部。通过增加温度调节装置使离子色谱仪的进样装置具有了温度调节功能,对温度敏感样品进行温度控制,即能使待检测样品在进样检测前处于恒定的温度条件,使样品保持稳定,以保证样品检测的准确性。(The invention discloses a temperature-adjustable ion chromatograph, which relates to the field of analysis and detection equipment and comprises an ion chromatograph and a temperature adjusting device, wherein the temperature adjusting device comprises a compressor, a condenser, a dry filter, a capillary tube and six first evaporators, a liquid outlet of the compressor is communicated with a liquid inlet of the condenser, a liquid outlet of the condenser is communicated with a liquid inlet of the dry filter, a liquid outlet of the dry filter is communicated with a liquid inlet of the capillary tube, a liquid outlet of the capillary tube is communicated with a liquid inlet of the first evaporator, a liquid outlet of each first evaporator is communicated with a liquid inlet of the compressor, and the six first evaporators are sequentially arranged at the bottom of a sample tray. The sample introduction device of the ion chromatograph has a temperature regulation function by adding the temperature regulation device, temperature control is carried out on the temperature sensitive sample, namely the sample to be detected is in a constant temperature condition before sample introduction detection, the sample is kept stable, and the accuracy of sample detection is ensured.)

1. A temperature-tunable ion chromatograph includes an ion chromatograph having a sample tray for placing a sample, the sample tray having a stationary lid and a movable lid rotatably coupled to the stationary lid; its characterized in that, ion chromatograph with adjustable temperature still includes temperature regulation apparatus, temperature regulation apparatus includes compressor, condenser, drier-filter, capillary and a plurality of first evaporimeter, the liquid outlet of compressor with the inlet intercommunication of condenser, the liquid outlet of condenser with drier-filter's inlet intercommunication, drier-filter's liquid outlet with the inlet intercommunication of capillary, the liquid outlet of capillary is with a plurality of the inlet intercommunication of first evaporimeter, the liquid outlet of first evaporimeter with the inlet intercommunication of compressor is a plurality of first evaporimeter set gradually in the bottom of sample dish.

2. The temperature-tunable ion chromatograph of claim 1, wherein the temperature-tuning device further comprises a housing, the compressor, condenser, dry filter, and capillary tube being integrated within the housing.

3. The temperature-tunable ion chromatograph of claim 2, wherein the housing is disposed at an upper portion of the ion chromatograph, the housing being removably coupled to the housing of the ion chromatograph.

4. The temperature adjustable ion chromatograph of claim 1, 2 or 3, wherein the bottom of the sample tray is provided with a groove, the first evaporator being embedded within the groove.

5. The temperature-adjustable ion chromatograph of claim 4, wherein the temperature adjusting device further comprises a second evaporator, an inlet of the second evaporator is in communication with an outlet of the capillary, an outlet of the first evaporator is in communication with an inlet of the compressor, and the second evaporator is disposed on a lower surface of the fixed box cover.

6. The temperature-adjustable ion chromatograph of claim 5, wherein the temperature adjustment device further comprises a fan disposed on a lower surface of the stationary box cover, the fan being positioned above the second evaporator.

7. The temperature-adjustable ion chromatograph of claim 5, wherein the temperature adjusting device further comprises a display screen, a main control circuit board, a plurality of temperature sensors, and a plurality of flow control valves, the main control circuit board is electrically connected to the compressor, the display screen, the temperature sensors, and the flow control valves, the plurality of flow control valves are disposed in the liquid inlets of the plurality of first evaporators in a one-to-one correspondence, and the plurality of temperature sensors are sequentially embedded in the bottom of the sample tray.

8. The temperature-tunable ion chromatograph of claim 6, wherein the ion chromatograph is model ICS-5000.

Technical Field

The invention relates to the field of analysis and detection equipment, in particular to a temperature-adjustable ion chromatograph.

Background

The ion chromatograph is mainly used for analyzing environmental samples, including anions and cations in samples such as surface water, drinking water, rainwater, domestic sewage, industrial wastewater, acid sediments, atmospheric particulates and the like, and trace impurities in water and reagents related to the microelectronic industry. In addition, the method has wide application in the fields of tobacco, food, sanitation, petrochemical industry, water, geology and the like. The Ion Chromatography (IC) has the advantages of good selectivity, high sensitivity and the like, is widely applied to the detection of ammonia release in the mainstream smoke of cigarettes, and is also a method adopted by the tobacco industry standard YC/T377. But the specificity of the ammonia component determines the poor stability of the sample solution: when the sample is left at high temperature, such as higher than 22 ℃, or at room temperature for more than 18h, the detection value will be higher than the real value. Resulting in a limited number of samples detectable daily and affecting the accuracy of the sample detection. Therefore, it is necessary to improve the sample injection device of the ion chromatograph, so that the sample injection device has a temperature regulation function, and performs temperature control on the temperature-sensitive sample, i.e. the sample to be detected is in a specific temperature condition before sample injection detection, so that the sample is kept stable, and the accuracy of sample detection is ensured.

Disclosure of Invention

Therefore, the invention provides a temperature-adjustable ion chromatograph, which aims to solve the problem of low detection accuracy caused by the fact that the conventional ion chromatograph cannot adjust the temperature.

In order to achieve the above object, the present invention provides a temperature-tunable ion chromatograph including an ion chromatograph having a sample tray on which a sample is placed, the sample tray having a fixed lid and a movable lid rotatably coupled to the fixed lid; ion chromatograph with adjustable temperature still includes temperature regulation apparatus, temperature regulation apparatus includes compressor, condenser, drier-filter, capillary and a plurality of first evaporimeter, the liquid outlet of compressor with the inlet intercommunication of condenser, the liquid outlet of condenser with drier-filter's inlet intercommunication, drier-filter's liquid outlet with the inlet intercommunication of capillary, the liquid outlet of capillary is with a plurality of the inlet intercommunication of first evaporimeter, the liquid outlet of first evaporimeter with the inlet intercommunication of compressor, it is a plurality of first evaporimeter set gradually in the bottom of sample dish.

Further, the temperature regulation device also comprises a shell, and the compressor, the condenser, the drying filter and the capillary tube are integrated in the shell.

Further, the housing is arranged at the upper part of the ion chromatograph, and the housing is detachably connected with the housing of the ion chromatograph.

Further, the bottom of the sample tray is provided with a groove, and the first evaporator is embedded in the groove.

Further, temperature regulation apparatus still includes the second evaporimeter, the inlet of second evaporimeter with the liquid outlet of capillary communicates, the liquid outlet of first evaporimeter with the inlet of compressor communicates, the second evaporimeter sets up in the lower surface of fixed lid.

Further, the temperature adjusting device further comprises a fan, the fan is arranged on the lower surface of the fixed box cover, and the fan is located above the second evaporator.

Further, temperature regulation apparatus still includes display screen, main control circuit board, a plurality of temperature sensor and a plurality of flow control valve, the main control circuit board is connected with compressor, display screen, temperature sensor, flow control valve electricity respectively, and is a plurality of flow control valve one-to-one sets up in a plurality of the inlet of first evaporimeter, a plurality of temperature sensor imbed in the bottom of sample dish in proper order.

Further, the model of the ion chromatograph is ICS-5000.

The invention has the following advantages: the temperature-adjustable ion chromatograph has the advantages that the temperature adjusting device is additionally arranged, so that the sample feeding device of the ion chromatograph has the temperature adjusting function, the temperature of the temperature-sensitive sample is controlled, the sample to be detected can be in a constant temperature condition before sample feeding detection, the sample is kept stable, and the accuracy of sample detection is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a schematic diagram of the structure of a temperature-tunable ion chromatograph provided by the present invention;

FIG. 2 is a schematic top view of the lid of the fixing box according to the present invention;

FIG. 3 is a schematic structural diagram of a thermostat provided in the present invention;

FIG. 4 shows the detection of NH in mainstream smoke of a cigarette after a temperature regulating device is installed on an ion chromatograph provided by the invention₄ ⁺Graph of content results versus time;

fig. 5 is a schematic connection diagram of a circuit portion of the temperature adjustment device provided by the present invention.

Description of reference numerals: 10. an ion chromatograph; 11. a sample tray; 12. fixing the box cover; 20. a temperature adjustment device; 21. a compressor; 22. a condenser; 23. drying the filter; 24. a capillary tube; 25. a first evaporator; 26. a second evaporator; 27. a housing; 28. a fan; 29. a display screen; 30. a main control circuit board; 31. a temperature sensor; 32. a flow control valve.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the temperature-adjustable ion chromatograph includes an ion chromatograph 10 and a temperature adjustment device 20, the ion chromatograph 10 has a sample tray 11 for placing samples, the sample tray 11 has a fixed box cover 12 and a movable box cover rotatably connected to the fixed box cover 12, the movable box cover and the sample tray 11 together form a closed space, and placing the samples in the sample tray 11 can reduce the influence of the external temperature during the sample detection process. In the present embodiment, the ion chromatograph 10 is a thermo (semer fly) ion chromatograph 10, and the model of the ion chromatograph 10 is ICS-5000, but the model of the ion chromatograph 10 is not limited thereto, and other types of ion chromatographs may be used.

As shown in fig. 2 and 3, the temperature adjusting device 20 includes a compressor 21, a condenser 22, a dry filter 23, a capillary tube 24, six first evaporators 25, a housing 27, a display screen 29, a main control circuit board 30, six temperature sensors 31 and six flow control valves 32, a liquid outlet of the compressor 21 is communicated with a liquid inlet of the condenser 22, a liquid outlet of the condenser 22 is communicated with a liquid inlet of the dry filter 23, a liquid outlet of the dry filter 23 is communicated with a liquid inlet of the capillary tube 24, a liquid outlet of the capillary tube 24 is communicated with a liquid inlet of each first evaporator 25, a liquid outlet of each first evaporator 25 is communicated with a liquid inlet of the compressor 21, the six first evaporators 25 are sequentially arranged at the bottom of the sample tray 11, so as to divide the sample tray 11 into six regions with different temperatures, although the number of the first evaporators 25 is not limited thereto, and is increased or decreased according to actual needs, in order to ensure the flatness of the bottom of the sample plate 11, the bottom of the sample plate 11 is provided with a groove in which the first evaporator 25 is embedded. The main control circuit board 30, the compressor 21, the condenser 22, the drying filter 23 and the capillary tube 24 are integrated in the housing 27, the display screen 29 is embedded in the surface of the housing 27, as shown in fig. 5, the main control circuit board 30 is respectively electrically connected with the compressor, the display screen 29, the temperature sensor 31 and the flow control valve 32, the six flow control valves 32 are correspondingly arranged at the liquid inlets of the six first evaporators 25, and the flow control valve 32 is used for changing the flow entering the condenser in the first evaporators 25, so as to change the temperature of each area. Six temperature sensors 31 are embedded in the bottom of the sample tray in sequence, each temperature sensor 31 corresponds to one first evaporator 25, the temperature sensors 31 are used for measuring the temperature in each area, the main control circuit board 30 is used for processing the temperature information measured by each temperature sensor 31 and controlling the display screen 29 to display, control keys are arranged on the main control circuit board 30, and a user can set the temperature in each area through the control keys. The housing 27 is provided on the upper portion of the ion chromatograph 10, and the housing 27 is detachably connected to the housing 27 of the ion chromatograph 10, so that if the temperature control device 20 is not used for a long period of time, the evaporator can be disconnected from the compressor 21 and the capillary tube 24, the housing 27 can be separated from the housing 27 of the ion chromatograph 10, and the temperature control device 20 can be placed separately.

Further, in a preferred embodiment of the present invention, the temperature adjustment device 20 further includes a second evaporator 26 and a fan 28, a liquid inlet of the second evaporator 26 is communicated with a liquid outlet of the capillary tube 24, a liquid outlet of the first evaporator 25 is communicated with a liquid inlet of the compressor 21, the second evaporator 26 is disposed on the lower surface of the fixed box cover 12, the fan 28 is also disposed on the lower surface of the fixed box cover 12, the fan 28 is located above the second evaporator 26, the fan 28 is disposed above the second evaporator 26, and when the fan 28 rotates, the cold air generated by the second evaporator 26 is carried by the air flow to each tail portion of the sample tray 11, so that the temperature in the sample tray 11 rapidly reaches a predetermined temperature.

The working principle is as follows: after a sample is placed in the sample tray 11, the movable box cover is rotated to seal the sample tray 11, the compressor 21 starts to work, high-pressure steam is conveyed to the condenser 22, the heat in the condenser 22 is partially converted into high-pressure liquid, when the high-pressure liquid and the residual high-pressure steam pass through the capillary tube 24, the residual high-pressure steam is completely converted into the high-pressure liquid, the high-pressure liquid enters the first evaporator 25 and the second evaporator 26 and is converted into low-pressure steam, the heat in the sample tray 11 is absorbed, the temperature in the sample tray 11 is reduced to a preset temperature, and the sample tray 11 is divided into six different temperature areas due to different working temperatures of each first evaporator 25. As shown in FIG. 4, the sample is kept stable when it is at a temperature lower than room temperature (e.g., 4 ℃) to ensure the accuracy of the sample detection. Of course, the function of the temperature adjustment device 20 is not limited to temperature reduction, and for some experiments in which temperature increase is required, the condenser 22 may be disposed in the sample tray 11 and the evaporator may be disposed in the housing 27.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.