Automatic microweighing system and method

Abstract

The invention discloses an automatic microweighing system and method. The system comprises a sample adding hopper, a gear, a controller, a movable door, a sample cup, a gravity sensor, a base and a shell. The base is arranged at the bottom of the shell. The sample adding hopper is arranged inside the shell. The top of the sample adding hopper is used as a feed inlet. The bottom of the sample adding hopper is provided with the sample cup used for containing materials. The neck of the sample adding hopper is provided with the gear controlled by the controller to rotate. The gear is in interference fit with the neck of the sample adding hopper, so that materials in a horn opening in the sample adding hopper are completely blocked to the position above the gear when the gear is not rotated; when the gear rotates, the materials in the horn opening in the sample adding hopper are clamped by tooth grooves between gear teeth to the position below the gear and fall into the sample cup; the sample cup is arranged on the gravity sensor. According to the automatic micro-weighing system and method, weighing time is greatly shortened, efficiency is improved, fine control over samples is achieved, and weighing precision is improved; microweighing is automatically carried out, human input is greatly reduced, operation is convenient, durability and persistence are achieved.

Description

technical field [0001] The invention belongs to the field of automatic measurement, and in particular relates to an automatic micro weighing system and a method thereof. Background technique [0002] Scientific experiments require accurate weighing of samples. General chemical experiments often require extremely high weighing accuracy. The current weighing operation methods include general weighing methods and subtractive weighing, which is a cumbersome process that requires a lot of manpower and energy. , there are extremely high requirements and tests on the experimenter's operation skills and psychology, which often easily lead to long weighing time and damage to the weighing accuracy. In the current prior art, such as a portable electronic balance disclosed by the patent of invention with the application number CN201410639245.9, an intelligent electronic balance disclosed by the patent of invention with the application number CN201010580122.4, etc. are all manually added...

AI Technical Summary

Problems solved by technology

For micro weighing, the accuracy often needs to be accurate to one thousandth of a gram or even one ten thousandth of a gram, which is difficult to achieve for manual sample addition.

At present, there are also the following automatic feeding devices using precision instruments, but they are usually expensive and difficult to promote

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