1, the refiner is generally used with steel cylinders. After reaching a certain pressure, the refiner began to foam. Blow hard with your mouth and it won't come out. )

2. Next, through the selection and testing of various materials, a suitable low-pressure, fine-bubble refining agent substitute can be found, which can be used with the self-made CO2 generator.

Second, the production-material selection:

On-site:

1, mahogany: cut in half, insert the tube into the water and blow (forcefully). Visible bubbles:

Blow to observe bubbles:

2. Abundant hemp: Features: the branches have kapok in the core, which has strong penetration and exquisiteness.

Cut it in half, insert the tube into the water (breathe normally), and then blow-. Visible bubbles:

3. Sophora japonica:

Cut it in half, insert the tube into the water (with a little force) and blow-. Visible bubbles:

4, Chinese rose flower wood:

Cut it in half and insert the tube into the water (normal breathing). As a result, the bubbles are too big to be refined and eliminated directly.

Note: The blowing test should be carried out 10- 14 times, and photos should be taken every time for careful comparison and observation.

Conclusion: When the bubbles are similar, the order of pressure is from small to large: rose branches.

Third, production -CO2 generator:

1, pressure reducing valve production:

Cut an ordinary pen, plug one end, open the middle eye at the same time, make it a little bigger, and put a rubber band on the valve. When you put it on the air hole, when the pressure is too high, it will open the rubber band and get discouraged. The inspiration comes from the principle of inflating the bicycle valve (I think about it every day for three or four days, I feel depressed and want to go out for a walk, and I suddenly think of it when I go downstairs to find a bicycle).

2. Tube, cover and refiner components:

Straight tube making: The automatic signature pen used is just thicker than the 4mm trachea. Be careful not to use an ordinary signature pen, it is a bit loose after insertion.

Elbow production: the automatic signature pen is baked with fire slightly, and it feels soft and bends 90 degrees immediately, so it can't leak. As shown in the figure:

Connecting pipe: the refiner is connected with a one-way check valve to prevent water from flowing backwards and blocking gas. Connect the U-shaped tube, then connect the dripper or the valve switch, and then connect the bottle cap to the container, and the bottle cap is simultaneously provided with a pressure relief valve. The glue for bottle caps and pipes is super glue. After solidification, gently remove the pipe edge, and then apply glass glue or plastic glue.

Assembly:

Four. Usage: 30g citric acid +30g alkali+150ml water (finally, slowly pour into the Coca-Cola bottle). Open very small bubbles every 8- 13 seconds. It usually takes 3-5 days.

Effect is very good

Have a good exchange of views.