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Negative pressure atmospheric transport device for COD on-line monitoring analyzer

A transmission device and analyzer technology, which is applied in the direction of measuring devices, analytical materials, chemical method analysis, etc., can solve the problems of unfavorable instrument corrosion and maintenance, easy storage of residual liquid in liquid pipelines, unfavorable liquid transmission, etc.

Active Publication Date: 2005-08-03
ZHEJIANG XIAOQIAO LIUSHUI ENVIRONMENTAL TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0002] At present, the liquid transmission devices used in COD online detectors are generally controlled by pumps or solenoid valves. This liquid transmission method makes the highly corrosive digestion solution and the pump and valve control devices used There is direct contact, which is not conducive to the transmission of liquids, and is not conducive to the corrosion protection and maintenance of the instrument
In addition, due to the residual liquid in the liquid pipeline and the formation of fouling on the pipeline during the liquid transmission process, it will seriously affect the accuracy of the detection data

Method used

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  • Negative pressure atmospheric transport device for COD on-line monitoring analyzer
  • Negative pressure atmospheric transport device for COD on-line monitoring analyzer

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Embodiment Construction

[0009] Below in conjunction with accompanying drawing, concrete structure and implementation mode of the present invention are described in detail:

[0010] COD online monitoring analyzer negative pressure air pressure transmission device, including sampling container or mixing chamber 1, digester 2, condenser pipe 3, detection device 4, liquid discharge chamber 5, vacuum pump 6 and two-position three-way solenoid valve 7, two-position The three-way solenoid valve 8, the two-position three-way solenoid valve 9 and corresponding pipelines are connected. The negative pressure air pressure transmission device uses the vacuum pump 6 as the power device for transmission; the vacuum pump 6 is respectively connected to the top opening and detection The devices 4 are connected to each other, and the gas circuit is switched and controlled through the two-position three-way solenoid valve 7 , the two-position three-way solenoid valve 8 and the two-position three-way solenoid valve 9 . ...

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Abstract

The negative pressure transport device for on-line COD monitoring analyzer includes sampler (mixing chamber), slaking unit, condensing pipe, detecting unit, liquid exhausting chamber, vacuum pump, and 3 two-position three-way solenoid valves connected via pipeline. By means of the vacuum pump as the driving unit and the 3 two-position three-way solenoid valves for gas path control, certain pressure gradient is formed between the mixing chamber and the slaking unit to transmit liquid from the mixing chamber to the slaking unit without being transmitted to other containers to avoid corrosion.

Description

Technical field: [0001] The invention relates to a COD online monitoring analyzer transmission device, which belongs to the technical field of chemical analysis and environmental protection. Background technique: [0002] At present, the liquid transmission devices used in COD online detectors are generally controlled by pumps or solenoid valves. This liquid transmission method makes the highly corrosive digestion solution and the pump and valve control devices used Direct contact is produced, which is not conducive to the transmission of liquids, and is not conducive to the corrosion protection and maintenance of the instrument. In addition, during the liquid transmission process, residual liquid is easy to be stored in the liquid pipeline, and fouling is easy to form on the pipeline, so the accuracy of the detection data will be seriously affected. Invention content: [0003] In view of the above problems, the object of the present invention is to provide a COD online m...

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Application Information

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IPC IPC(8): G01N1/44G01N31/00
Inventor 金沉陈明滕东华苏雯
Owner ZHEJIANG XIAOQIAO LIUSHUI ENVIRONMENTAL TECH CO LTD
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