Pneumatic stirring device and using method

Abstract

The invention discloses a pneumatic stirring device and a using method, and belongs to the field of analysis and test instruments. The pneumatic stirring device comprises an air storage bag, air ducts, an electromagnetic valve, a singlechip, a data wire and an intake needle; the air storage bag is connected with the electromagnetic valve by an air duct, the electromagnetic valve is connected with the intake needle by an air duct, and according to the titration stirring requirement, the singlechip transmits signals via the data wire to control the action of the electromagnetic valve so as to control the ventilation time length and cycle of the pneumatic device. Gas which does not influence the chemical reaction is injected from the bottom, and the reaction solution is stirred to accelerate the mass transfer process of materials in the solution, so that the titration efficiency is improved; and the pneumatic stirring device is simple in structure and high in automation degree, and does not bring electromagnetic pollution.

Description

technical field [0001] The invention belongs to the field of analytical testing instruments, and in particular relates to a reaction solution stirring device, which is a core part of a miniature electronic titrator. The device can automatically stir the reaction solution according to the titration action of the electronic titrator, so as to improve the titration efficiency. Background technique [0002] Based on capacitive coupling non-contact conductivity sensor (C 4 D) The miniature electronic titrator for on-line monitoring of the change in the conductivity of the reaction solution uses a slender insulating material tube with an inner diameter of no more than 2.0 mm as a disposable titration reaction vessel. At present, there is no suitable stirring measure to speed up the mass transfer of the electrolyte in the reaction solution. As a result, the titration efficiency is low. If an electromagnetic stirrer or ultrasonic vibration is used for stirring, electromagnetic poll...

AI Technical Summary

Problems solved by technology

[0002] Based on capacitive coupling non-contact conductivity sensor (C 4 D) The miniature electronic titrator for on-line monitoring of the change in the conductivity of the reaction solution uses a slender insulating material tube with an inner diameter of no more than 2.0 mm as a disposable titration reaction vessel. At present, there is no suitable stirring measure to speed up the mass transfer of the electrolyte in the reaction solution. resulting in lower titration efficiency

If an electromagnetic stirrer or ultrasonic vibration is used for stirring, electromagnetic pollution will inevitably occur, which will seriously affect the C 4 D’s response signal, causing measurement error

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