Simple and safe fire extinguishing principle experiment device

Abstract

The present invention discloses a simple and safe fire extinguishing principle experiment device. The problems are solved that a fire extinguishing principle experiment device is complete, a sprayingphenomenon is not obvious and a filter flask is liable to generate danger of explosions in chemical test teaching materials of junior high schools. The device comprises a plastic mineral water bottlehaving a small hole, a small test tube and a plastic rod. The plastic mineral water bottle having the small hole is configured to replace a filter flask, a concentrated Na2CO3 solution is injected into the plastic mineral water bottle having the small hole, the small test tube configured to contain concentrated hydrochloric acid is carefully put into the plastic mineral water bottle having the small hole and concentrated hydrochloric acid is inserted into the small test tube, the plastic rod is used for stabilize the small test tube, and the plastic mineral water bottle is tightly capped by employing a plastic bottle cap. The device is inverted so that liquid can be seen to spray out of the small hole of the plastic mineral water bottle, and therefore the problems are solved that a fire extinguishing principle experiment device is complete, a spraying phenomenon is not obvious and a filter flask is liable to generate danger of explosions in chemical test teaching materials of junior high schools. The meanings of figures are as follows: 1 shows a plastic mineral water bottle having a small hole and containing a concentrated Na2CO3 solution, 2 shows a small test tube containing concentrated hydrochloric acid, and 3 shows a plastic rod.

Description

technical field [0001] The patent of the invention belongs to the field of education and teaching, and is specifically a simple and safe fire extinguishing principle experiment device. Background technique [0002] In the junior high school chemistry experiment textbook, the experimental equipment of the fire extinguishing principle experiment is complicated, the spray phenomenon is not obvious, and the suction filter bottle is prone to the danger of explosion. The patent of the present invention replaces the suction filter bottle with a plastic mineral water bottle with small holes, injects concentrated Na2CO3 solution into it, carefully puts the small test tube containing concentrated hydrochloric acid into the plastic mineral water bottle with small holes, injects concentrated hydrochloric acid, and uses a plastic rod Stabilize the vials and recap tightly with plastic caps. Turn the device upside down, and you can see the liquid spraying out from the small hole of the mi...

AI Technical Summary

Problems solved by technology

Turn the device upside down, and you can see the liquid spraying out from the small hole of the mineral water bottle, which effectively solves the problem that the fire extinguishing principle experiment in the junior high school chemistry experiment textbook is complicated, the spraying phenomenon is not obvious, and the suction filter bottle is prone to explosion. The problem

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