Automatic sample handling system and control method thereof
A technology of automatic sample injection and control method, which is applied in the direction of material analysis, measuring device, instrument, etc. by optical means to eliminate all errors and ensure repeatability and consistency.
Inactive Publication Date: 2012-05-16
SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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[0003] The object of the present invention is to provide an automatic sampling system and its control method for automatically controlling water samples and reagents to enter the mixed sample pool in proportion, to mix and react in the sample pool, and to send the reacted sample into the colorimetric measurement unit. Solve a series of technical problems such as automatic sampling of water samples and reagents and automatic control of the mixed reaction process in the online colorimetric measurement and analysis of trace elements and nutrients in water, and improve the accuracy and stability of online measurement and analysis technology
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[0016] The structural details of specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings:
[0017] The structure of the automatic sampling device for automatic proportioning, sampling and mixed reaction of trace elements and nutrients in water is as follows: figure 1 As shown, it mainly includes a reagent pool 19, a sample pool 20, a three-way joint 14, a three-way solenoid valve 16 and a sample mixing pool device 21. The reagent pool 19 passes through the first peristaltic pump 4, and then passes through the corrosion-resistant and tensile-resistant peristaltic pump tube 12. Connected to the first input interface a1 of the three-way joint, the rotating shaft of the first peristaltic pump 4 is connected with the rotating shaft of the first stepping motor 1 (the driving motor of the first peristaltic pump 4) to control the precise injection of the reagent; the sample pool 20 By the second peristaltic...
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The invention provides an automatic sample feed system and a control method thereof. The automatic sample feed system comprise an automatic sample feed device and a control circuit thereof, wherein the automatic sample feed device comprises a sample pool, an agent pool, a three-way connector, a three-way electromagnetic valve, a sample mixing pool device and relative driving and controlling devices. According to a preset control program of the control circuit, the water sample of the sample pool and the agent of the agent pool are fed by peristaltic pumps to pass the three-way connector and the three-way electromagnetic valve to be filled into a sample mixing pool of the sample mixing pool device, and the injection pump head of the sample mixing pool device feeds the reacted mixture sample of the mixing sample pool via the three-way electromagnetic valve to enter into a detection device to process trace element and nutrient colorimetric analysis tests. The invention relates to the technical problems of the prior art such as automatic accurate proportioning of the trace elements and the nutrients of water in on-site online automatic colorimetric detection, sample feed and mixing reaction, to realize online detection on the trace elements and the nutrients of water.
Description
technical field [0001] The invention relates to an automatic sampling device and a control method thereof, in particular to a device for automatic sampling and mixing of water samples and reagents for on-line automatic detection of trace chemical elements in a water body and a control method thereof. Background technique [0002] In order to facilitate routine monitoring in marine biogeochemical research, researchers have gradually transferred the analysis of chemical elements in seawater from the laboratory to the field. The injection method of reagents and reagents is manual injection, and the sample mixing reaction process and reaction time are artificially controlled. This method requires the intervention of staff and is not suitable for on-line analysis of on-site chemical elements. For the on-site online measuring instrument, all the sampling and mixing reaction processes must be completed automatically without human participation. The automatic sampling and mixing rea...
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IPC IPC(8): G01N35/08G01N21/01
Inventor 李彩曹文熙孙兆华卢桂新柯天存杨跃忠郭超英
Owner SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI