As we all know, there is a pressure relief valve in the structure of the pressure cooker. After smearing for a period of time, it is very easy to block the pressure reducing valve and exhaust hole because the daily food contains chemicals such as sediment. Once blocked, it is likely that the pressure in the pot will be difficult to discharge. If you steam at high temperature for a long time, the working pressure inside will continue to accumulate. Once the pressure cooker reaches its load limit, it will certainly explode.
Therefore, when using the pressure cooker, people should pay special attention to check the position of air holes and pressure relief valves to see if there is any blockage, and if there is, it must be removed immediately.
2. old and aging.
Some pressure cookers have been used for a long time, even if the pressure relief valve is not blocked, there are other problems, such as loose parts and poor sealing.
In the case of adoption, this dilapidated pressure cooker can't keep the pressure in the pot, but it will continuously squeeze every part in the pot with the expansion of temperature. Once this loose and aging part falls or can't bear it from now on, it will of course become bigger with a bang.
Therefore, in the application of pressure cooker, we should also pay attention to the maintenance of pressure cooker to prevent overload application. If the pressure cooker is aging, please dismantle it immediately to avoid being too thrifty and causing more serious economic losses.
3. The rubber band is aging, and the sealing performance is poor, resulting in unbalanced air pressure in the pressure cooker.
After a period of application, rubber and plastic products will appear aging problems more or less. And the aging rubber band, the tightness will decrease. Originally, the standard air pressure could be properly controlled in the rubber band in the pot. It is very likely that there will be some leakage after aging. If the overall leakage is ok, the internal air pressure can still maintain a dynamic balance, but many times they can't control the leakage to a visual angle, causing some air pressure to be too high and desperately squeezing that part. Eventually the pressure cooker will burst from that part.
Therefore, after one or two years of use, it is best to immediately remove and replace the rubber band of the pressure cooker.