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Automatic regeneration device of suppression column used in low-pressure ion chromatography

A low-pressure ion chromatography and automatic regeneration technology, applied in the field of low-pressure ion chromatography, can solve the problems of wasting manpower, difficult to accurately control regeneration liquid and cleaning liquid, etc., and achieve the effects of simple structure, labor saving, and accurate injection volume.

Inactive Publication Date: 2012-08-15
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is no special equipment, the method used in the prior art requires the operator to wait and observe on site during the whole process of regeneration of the suppression column, which not only wastes manpower, but also makes it difficult to accurately control the regeneration solution and cleaning solution injected into the suppression column

Method used

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  • Automatic regeneration device of suppression column used in low-pressure ion chromatography
  • Automatic regeneration device of suppression column used in low-pressure ion chromatography
  • Automatic regeneration device of suppression column used in low-pressure ion chromatography

Examples

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Embodiment 1

[0024] In this embodiment, the automatic regeneration device of the suppression column used in the low-pressure ion chromatography analysis is as follows: figure 1 , figure 2 , image 3 as shown,

[0025] It includes a liquid injector, a first time relay 3 and a second time relay 4; the liquid injector is composed of a three-way solenoid valve 1 and a low-pressure pump 2 connected to the three-way solenoid valve through pipe fittings, and the three-way solenoid valve 1 is anti-corrosion Solenoid valve (model: ZCF3-1, manufacturer: Xi'an Huiyuan Instrument Valve Co., Ltd.), low-pressure pump 2 is a low-pressure peristaltic pump (model: 102K miniature peristaltic pump, manufacturer: Chongqing Jieheng Peristaltic Pump Co., Ltd.), flow rate 2ml / min, working pressure 2.5×10 5 Pa; the first time relay 3 and the second time relay 4 are automatic control time relays (model: ZYS48-S, manufacturer: Shanghai Zhuoyi Electronics Co., Ltd.); the first time relay 3 and the three-way sol...

Embodiment 2

[0033] In this embodiment, the automatic regeneration device of the suppression column used in the low-pressure ion chromatography analysis is as follows: Figure 4 , Figure 5 , Figure 6 As shown, it includes a liquid injector, a first time relay 3 and a second time relay 4; the liquid injector is composed of a regeneration liquid injection pump 7 and a cleaning liquid injection pump 8, and the regeneration liquid injection pump 7 and the cleaning liquid injection pump 8 All are low-pressure peristaltic pumps (model: 102K miniature peristaltic pump, manufacturer: Chongqing Jieheng Peristaltic Pump Co., Ltd.), their flow rate is 1.5ml / min, and their working pressure is 2.5×10 5 Pa; the first time relay 3 and the second time relay 4 are automatic control time relays (model: ZYS48-S, manufacturer: Shanghai Zhuoyi Electronics Co., Ltd.); the first time relay 3 and the regeneration liquid injection pump 7 The motor is connected to control the regeneration liquid injection pump ...

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Abstract

The invention relates to an automatic regeneration device of a suppression column used in low-pressure ion chromatography, which comprises a liquid injection device, a first time relay and a second time relay, wherein the first time relay and the second time relay are connected with the liquid injection device and are respectively used for controlling the liquid injection device to inject regeneration liquid or cleaning solution into the suppression column according to the set time; two power switches are respectively arranged on circuits where the first time relay is connected with a power supply and the second time relay is connected with the power supply; and the liquid injection device has two structural forms: the first structure consists of a three-way electromagnetic valve and a low-pressure pump connected with the three-way electromagnetic valve by a pipe fitting, and the second structure consists of regeneration liquid injection pump and a cleaning solution injection pump.

Description

technical field [0001] The invention belongs to the field of low-pressure ion chromatographic analysis, in particular to an automatic regeneration device for a suppression column used in low-pressure ion chromatographic analysis. Background technique [0002] Analysis of F in sample or standard sample by low pressure ion chromatography - , Cl - , NO 3 - , SO 4 2- When waiting for inorganic salt anions, it is necessary to set a low pressure suppression in the analytical instrument in order to suppress the background conductance of the eluent and improve the analytical sensitivity. In the analysis process, the suppression column needs to be regenerated every 7 to 9 hours, otherwise the performance cannot meet the requirements. For the regeneration of the suppression column, the prior art uses a low-pressure pump as the regeneration pump, and the manual operation method is used to regenerate the suppression column. The operation steps are: 1. Place the input pipe of the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/36
Inventor 张新申蒋小萍
Owner SICHUAN UNIV
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