Reasons for frequent start and stop of water pump
The automatic water pumps currently on the market are composed of water pumps and pressure switches.The pressure difference (Use water pressure to control the on/off of the pressure switch and the pump) of the pressure switch (The pressure difference when the pressure switch is on and off) is not large, generally within 0.05 MPa, and the difference (The distance between the operating position of the pressure switch and the release position) is not large.
This kind of pressure switch includes switch connector, switch body, shell, rubber film, spring, adjusting nut and push rod,The execution part uses the JW2-11 type micro switch, its difference is very small, about 1 mm, resulting in the pressure difference of the entire pressure switch is also very small.
This kind of pressure switch has a small pressure difference, a small holding water volume, and a short holding time. Due to leakage and other reasons, the pressure in the pump or system quickly changes from the closing pressure (the pressure when the pressure switch cuts off the power when the water pressure rises) Decrease to the opening pressure (the pressure when the pressure switch is turned on when the water pressure is reduced)，The water pump will start on its own in a short time, often every few minutes, which cannot meet the requirements of the automatic water pump.
The pressure difference of the pressure switch is very small, which limits the expansion of the pressure holding water volume, and the pump starts frequently.The starting current is large, the micro switch is seriously overloaded, and the life is short, which affects the performance of the automatic water pump. At the same time, it consumes a lot of energy and noise, and the motor is easily damaged.
If you need to solve this problem, you need to provide a pressure switch that can not start the water pump for a long time, so that the pressure tank has a larger holding water volume, simple structure, long life, large difference, large pressure difference.The pressure switch must also have the characteristics of simple structure, long life, large difference, and large pressure difference.