In ordinary life, perhaps everyone will notice this. With the endless emergence of high-tech in today's society, more things are beginning to popularize intelligence and automation, such as self-service ticket purchase, shopping and so on. Nowadays, especially in various large shopping malls, a shared self-service coffee machine has gradually appeared. Users only need to scan the code through their mobile phones to place an order, and then place the cup under the machine's beverage outlet, and wait a moment. Enjoy a delicious drink. But is this shared beverage machine filled with a day's supply in advance? The answer is not exactly, here is mainly a shared coffee machine as an example.

As we all know, infusion drinks such as coffee and milk that need boiling water are often more delicious when drunk hot, and once they get cold, the taste will be greatly reduced. Therefore, the shared coffee machine in the above picture is not full of coffee drinks. If you open the machine, you will find that there are usually water tanks and various raw material boxes inside. As shown in the figure below, under normal circumstances, the water in the water tank will be pre-heated and reduced to a temperature suitable for drinking, and then the raw material box is usually filled with raw material powder, such as coffee powder, milk powder, fruit juice powder, etc. Of course, some can also contain various concentrated fruit juices. When a customer has just placed an order, the water in the water tank will be mixed with raw material powder, here is coffee powder, which will flow into the mixer through a set proportion for stirring, and then flow out from the outlet after a short period of rapid stirring. In this way, people can drink warm coffee. After all, if all the coffee stored in advance is brewed, it is very unfavorable for heat preservation.

Then the problem also arises. What if there is not enough water in the water tank? How do you know that the water in the water tank is running out? SST factory liquid level switch can be used here, such as this food-grade liquid level switch that can directly contact food.LLT200D3SH. Designers can set a zui high liquid level and zui low liquid level point in the water tank and install SST liquid level switches at these two points. Then you can connect the water tank to the outside drinking water pipe. As long as the above settings, you can easily achieve automatic liquid. When the water in the water tank drops to the pre-set low level switch, the system can receive a signal and automatically control the pump to add liquid through the water pipe. Later, if the water level reaches zui high level, the liquid level switch will give another signal to the main control system to stop adding liquid, so as to strictly control the water level of the water tank. After zui, the beverage machine can heat the drinking water in the water tank and properly cool down. According to the established common sense, boiling water will not exceed 100 degrees, and SST's liquid level switch can withstand 125 degrees, which is enough to meet the requirements of use.

At the end, attach this level switchLLT200D3SHRelated product parameters: