Testing tube placing rack for biological experiments in junior schools
A technology for biological experiments and placing racks is applied in the field of test tube placement racks for biological experiments in junior high schools, which can solve the problems of poor fixing effect of the placing racks, and achieve the effects of good fixing effect, increasing friction and prolonging service life.
Inactive Publication Date: 2018-09-21
米京京
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Problems solved by technology
[0004] The purpose of the present invention is to provide a test tube placement rack for junior high school biological experiments, which has the advantages of good fixing effect and solves the problem of poor fixing effect of traditional placement racks
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0017] see Figure 1-3 , a test tube placement rack for junior high school biological experiments, comprising a base plate 1, both sides of the bottom of the base plate 1 are fixedly connected with support legs 14, the bottom of the support legs 14 is provided with a first anti-skid pad 15, through the support legs 14 and the first The cooperative use of the anti-slip pad 15 can increase the friction between the bottom of the support leg 14 and the test bench,...
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The invention discloses a testing tube placing rack for biological experiments in junior schools. The testing tube placing rack includes a baseplate, five supporting rods are fixedly connected to thetop of the baseplate, supporting blocks are fixedly connected to the tops of the supporting rods, supporting plates are fixedly connected to the portions, at the rear ends of the supporting rods, of the top of the baseplate, and a limiting groove is formed in the surface of each supporting plate; supporting columns are fixedly connected to the two sides of the top of the baseplate, a clapboard isfixedly connected to the front surfaces of the supporting columns, box bodies are fixedly connected to the front surface of the clapboard, and a pulling rod is arranged in each box body. Through arrangement of the baseplate, the supporting rods, the supporting blocks, the supporting plates, the limiting grooves, the supporting columns, the clapboard, the box bodies, the pulling rods, springs, baffles, prisms and U-shaped fixing sleeves, the placing rack has the advantage of a great fixing effect; the service life of testing tubes is prolonged, and meanwhile the problem that traditional testingtube placing racks are poor in fixing effect is solved.
Description
technical field [0001] The invention relates to the technical field of experimental instruments and equipment, in particular to a test tube placement rack for junior high school biological experiments. Background technique [0002] Test tubes, commonly used instruments in biological laboratories, are used as reaction containers for a small amount of reagents. They should be preheated before heating at room temperature or during heating, otherwise the test tubes are easy to burst. When used, test tubes are divided into ordinary test tubes, test tubes with branches, and centrifugal test tubes. The flat mouth test tube is a flat glass tube with a round bottom. Mechanical strength, easy to clamp and not easy to fall off. The fermentation test tube is a thin and short flat-mouthed, round-bottomed test tube. The branched test tube is a flat-mouthed test tube with side branches. The suction pipe is connected, and the mouth of the pipe is inserted into the filter funnel with a rubb...
Claims
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IPC IPC(8): B01L9/06
CPCB01L9/06
Inventor 米京京
Owner 米京京