Full-automatic water-soluble acid-base tester capable of automatically drying residual water in colorimetric tube

Abstract

The invention discloses a full-automatic water-soluble acid-base tester capable of automatically drying residual water in a colorimetric tube, belongs to the technical field of water-soluble acid-basedetermination, and solves the problem that an existing full-automatic water-soluble acid-base tester does not have the function of automatically drying residual water in a colorimetric tube. The tester comprises a colorimetric tube fixing plate, a first screw rod, a tester shell, a movable drying box, a servo motor and an air injection valve, a containing frame is slidably connected to the firstscrew rod and a second screw rod through a sliding block connected with a connecting rod. The servo motor is connected with a transmission wheel embedded in the end part of the first screw rod througha driving wheel connected with a motor shaft and gear teeth; the drying box is connected with an exhaust fan through an air suction pipe, the exhaust fan is connected with an air injection valve through an air supply pipe, and the air injection valve is located over the containing frame. The tester has the advantage of automatically drying residual water in the colorimetric tube.

Description

technical field [0001] The invention belongs to the technical field of water-soluble acid-base measurement, and in particular relates to a fully automatic water-soluble acid-base tester for automatically drying residual moisture in colorimetric tubes. Background technique [0002] The measurement principle of the automatic water-soluble acid-base tester is to extract the water-soluble acid and alkali in the sample with distilled water, and then use methyl orange or phenolphthalein indicator to check the color change of the extracted solution to judge whether there is any acid or alkali in the product. The presence of water-soluble acids and bases. [0003] Put 1-2mL extract into two colorimetric tubes respectively, add 2 drops of methyl orange solution to the first colorimetric tube, and mix it with the same volume of distilled water and 2 drops of methyl orange solution Compared with another colorimetric tube, if the extract is rose color, it means that there is water-solu...

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Problems solved by technology

[0003] Put 1-2mL extract into two colorimetric tubes respectively, add 2 drops of methyl orange solution to the first colorimetric tube, and mix it with the same volume of distilled water and 2 drops of methyl orange solution Compared with another colorimetric tube, if the extract is rose color, it means that there is water-soluble acid in the tested product, add 3 drops of phenolphthalein solution to the second test tube, if the solution is rose color or red, It means that there is a water-soluble alkali, but there will be residual water in the colorimetric tube after cleaning, which will cause dilution of the product in the colorimetric tube and the methyl orange solution and phenolphthalein solution, which will affect the accuracy of the measurement

[0004] However, the automatic water-soluble acid-base tester cannot automatically dry the cleaned colorimetric tubes. If manual drying is used, it will not only increase the labor intensity of the staff, but also reduce work efficiency.

[0005] Therefore, in order to solve this problem, it is necessary to develop and design a fully automatic water-soluble acid-base analyzer that automatically dries the residual moisture of the colorimetric tube, which solves the problem that the existing fully automatic water-soluble acid-base analyzer does not have the ability to automatically dry The problem of residual moisture in the colorimetric tube

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