How to make an automatic flower watering device?

Flower growers are afraid that watering will stop. But when it comes to business trips and going out, there is no other way. The sun in summer of beijing, if you forget to water it for two days in a row, the flowers will turn into dry flowers. Now I have an automatic watering device, which can adjust the watering intensity according to the size of the flowerpot and plant preferences, and can cope with business trips from a few days to a week.

Used large plastic bottles with lids, such as 1-2 liter coke bottles, vats of juice barrels, etc. Need a cover. The larger the capacity, the longer the automatic watering time.

Unopened clean disposable infusion set. I took some products processed by the hospital that have expired and can't be used by others, but they were unopened and sterile. Which means it's still clean. If necessary, I will give it away for free. Remember, disposable infusion sets used in hospitals cannot be reused, which may cause pollution.

Tools: scissors with pointed tips, a knife or screwdriver, or an electric drill with a diameter of no more than 2mm, used for drilling.

Any rope about one meter long is used to fix the water bottle.

It's simple. Punch a hole in the bottle cap with any of the tools mentioned above, the diameter of the hole is smaller than that of the infusion set interface, and then insert the infusion set interface into this hole by force. It is suggested that the diameter of the hole should not exceed 3 mm, which is too thick, and the interface of the infusion set is not tightly combined after insertion, which may leak water after a period of time. Of course, if the aperture is too small, it will be difficult to insert the interface of the infusion set. However, the quality will be good and durable. 3- Installation and debugging 3. 1- Fill the bottle with water, tie it with a rope in any way, hang it upside down and hang it about 1 m above the flowerpot. |

3.2- Adjust the liquid level in the drip pot and valve roller, and adjust the water drop frequency to 10-20 seconds/drop. The doctor said that the frequency was 1s/ drop when 500ml of liquid was dropped in 2 hours. Therefore, if 500ml of water is needed every day, the dripping frequency is 12s/ drop. Considering the losses such as evaporation, it is not necessary to calculate it too accurately. In addition, consider the size of the flowerpot. Don't forget to fix the needle in the flowerpot. Over. Thirdly, it is forbidden to use used infusion sets, which may cause pollution. I used an unopened but expired infusion set in the hospital, which was completely clean.

In addition, there must be a certain amount of liquid in the drip pot, otherwise the liquid cannot flow out.