Test tube washing device adjustable in washing diameter and for middle school chemistry experiment teaching

Abstract

The invention particularly relates to a test tube washing device adjustable in washing diameter and for middle school chemistry experiment teaching. The device comprises a tank water groove, a test tube base, a square mounting board, a lifting mechanism for lifting or descending a test tube groove and a mounting frame, and a washing device body. The washing device body comprises a motor, a drive wheel, a driven wheel and a brush head device; the brush head device comprises a first rotary shaft, a first bearing and an elastic cleaning sleeve; the motor drives the first rotary shaft to rotate; the bottom of the first rotary shaft is sleeved with an elastic cleaning sleeve; and the degree of thickness of the interior of the elastic cleaning sleeve is changed through vertical movement of a cone so that the device can adapt to washing of test tubes of different inner diameters. Placement of the test tubes is achieved through lifting of the lifting mechanism. The test tube washing device adjustable in washing diameter and for middle school chemistry experiment teaching meets the requirement of washing of the test tubes of different diameters, has no dead corner during washing, is convenient to operate and can be widely applied and popularized.

Description

technical field [0001] The invention belongs to the technical field of test tube cleaning, and in particular relates to a test tube cleaning device for chemical experiment teaching in middle schools with adjustable cleaning diameter. Background technique [0002] At present, chemistry is an experiment-based discipline, and the formation and development of chemistry cannot be separated from experiments. After studying in junior high school, students have a basic understanding of the subject of chemistry. But for high school chemistry learning, some students are still at a loss. When students are studying, they not only need to master the contents of the textbook, but also need to use chemical experiments to form chemical concepts, understand and consolidate chemical knowledge, so chemical experiments are particularly important. [0003] In the process of chemical experiments, test tubes are the most common experimental equipment, and they are used in a large amount. The tes...

AI Technical Summary

Problems solved by technology

But it does not solve the problem that the same set of devices can clean test tubes of different diameters

Images