Test tube rack for chemical experiments with adjustable space size

Abstract

The invention provides a test tube rack for chemical experiments with adjustable space size, and relates to the field of test tube racks. The test tube rack includes a fixed base, sucking discs are bonded to the bottom of the fixed base, a quantity increasing and decreasing mechanism is arranged above the fixed base, the four top corners of the quantity increasing and decreasing mechanism are movably connected with the bottom of lifting screws through lifting bearings, the tops of the lifting screws are inserted into the bottoms of lifting screw cylinders and are in threaded connection with the lifting screw cylinders, the tops of the lifting screw cylinders are respectively bonded to the bottoms of two overlapping frame plates. According to the test tube rack, the two overlapping frame plates are controlled to be separated from each other by rotating stretching handles to expose overlapping test tube ports, the number of the test tube ports of the device is increased to accommodate alarge number of test tubes, the practical needs can be met, and the test tube rack can be reduced to a smaller volume for easy carrying.

Description

technical field [0001] The invention relates to the technical field of test tube racks, in particular to a test tube rack for chemical experiments with adjustable space size. Background technique [0002] Most of the test tube racks in the prior art are common racks, and the test tubes after sampling are directly stacked on the test tube racks. The diameter and height of the test tube mouth are fixed, so that the test tube with a larger outer diameter cannot be inserted into the test tube rack. If the outer diameter is too small, it is easy to dump and damage when placed on the test tube rack. Inconvenient to use. SUMMARY OF THE INVENTION [0003] (1) Technical problems solved [0004] In view of the deficiencies of the prior art, the present invention provides a test tube rack for chemical experiments with adjustable space size, which solves the problem that the diameter and height of the test tube mouth on the test tube rack are fixed, resulting in that the test tube...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a test tube rack for chemical experiments with an adjustable space size, which solves the problem that the diameter and height of the test tube openings on the test tube rack are fixed, resulting in that the test tube with a larger outer diameter cannot be inserted into the test tube rack Inside, if the outer diameter is too small, it is easy to be dumped and damaged when placed on the test tube rack. At the same time, there is a problem that the number of test tubes placed with a small volume is limited and it is not convenient to use.

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