Sampling device capable of reducing PH electrode pollution

A sampling device and electrode contamination technology, which is applied in the direction of sampling device and test sample preparation, etc., can solve the problems of poor measurement accuracy, large wear of glass electrodes, and short service life of electrodes.

Inactive Publication Date: 2012-10-10
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The solid content in the desulfurization slurry reaches about 15%. At present, the pH value of the slurry is directly measured with a glass electrode. The glass electrode wears a lot, the service life of the electrode is short, and the measurement accuracy is poor.

Method used

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  • Sampling device capable of reducing PH electrode pollution

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Embodiment Construction

[0014] figure 1 It is a structural schematic diagram of the present invention. As shown in the figure, the top of the solid-liquid separation device 1 is connected with an adjustable overflow pipe 5, and the adjustable overflow pipe 5 is connected to the feed port 11 of the overflow measuring tank 2 through a hose 6, and the overflow measuring tank The upper end of the 2 is connected with a pH measurement interface 8, and an inclined filter orifice 7 is connected between the pH measurement interface 8 and the feed inlet 11. When in use, the pressurized solid-containing liquid enters the solid-liquid separation device 1 tangentially through the water inlet pipe 3, and a high-speed rotating flow field is generated in the solid-liquid separation device 1. Under the action of centrifugal force, the solid particles with high density form a dense phase slurry from the bottom flow port 4 is discharged to form an underflow liquid. The solid particles with low density form an upward ...

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Abstract

The invention discloses a sampling device capable of reducing PH electrode pollution. The sampling device is characterized in that the top of a solid-liquid separator is connected to an adjustable overflow pipe; the adjustable overflow pipe is connected to a feed inlet of an overflow measuring tank by a flexible pipe; the top of the overflow measuring tank is connected to a PH measuring interface; and an inclined filtration orifice plate is connected between the PH measuring interface and the feed inlet. The sampling device can effectively prevent PH glass electrode wearing caused by a high-solid content liquid, reduce an easy-scaling solid-containing liquid deposited on the surface of a PH glass electrode, and improve the accuracy of PH measurement.

Description

technical field [0001] The sampling device of the present invention particularly relates to a sampling device for reducing pH electrode pollution. Background technique [0002] In the process of measuring the pH value of solid-containing liquids, the pH value is related to the ion content and activity in the liquid, and has nothing to do with the amount of solid content. The pH electrode is made of glass film and is easily broken. The pressure, dirt and wear on the electrode surface have a great influence on the measurement. When the liquid with high solid content has a high flow rate, the solid particles will wear the pH glass electrode more, which will affect the life of the electrode and the accuracy of pH measurement. Easy to scale Solid particles in solid-containing liquids are easy to deposit on the surface of the pH glass electrode, which affects the accuracy of pH measurement. Coagulation is a routine step in the process of water treatment and wastewater treatment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/10G01N1/34
Inventor 徐锐梅重民邓永强伍发元
Owner STATE GRID CORP OF CHINA
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