Detection tool of indication switch for air filter

The utility model discloses a detection tool of an indication switch for an air filter, and belongs to the technical field of automobile part detection. The detection tool comprises an air chamber, wherein a porous partition plate is arranged in the air chamber; the air exhaust mechanism is communicated with the air chamber, so that the air chamber is in a negative pressure state; the pressure indicator is communicated with the air chamber through a first pipeline and is used for indicating the pressure in the air chamber; one end of the indicating switch is communicated with the air chamber through a second pipeline, the other end of the indicating switch is connected with a universal meter, and when the pressure in the air chamber reaches a preset value, the indicating switch is closed and is electrically connected with the universal meter. According to the detection tool, gas fluctuation during negative pressure pumping can be reduced, the accuracy of the detection result of the indication switch is improv