Filter integrated with supercharging, de-dusting and alarm functions used for driving cab of engineering van

The utility model relates to a filter integrated with supercharging, de-dusting and alarm functions used for a driving cab of an engineering van. The filter comprises a housing assembly, a filtering device, an evaporating fan, a control system, an alarm, a speed-regulating element used for controlling rotating speed of the evaporating fan and a pressure-measuring element used for detecting internal pressure of the driving cab. The filtering device comprises a blade ring and a filtering core assembly which is in sleeve joint into the blade ring. The evaporating fan is located into the filtering core assembly. The filtering device and the evaporating fan are both mounted into the housing assembly, in which a gas inlet, a gas outlet and an impurity-collecting hopper are arranged. The gas outlet is communicated with the driving cab of the engineering van. The alarm, the speed-regulating element and the pressure-measuring element are all connected with the control system. The pressure-measuring element and the alarm are installed into the driving cab of the engineering van. The filter integrated with supercharging, de-dusting and alarm functions used for the driving cab of the engineering van has following beneficial effects: by integrating supercharging, de-dusting, alarm and other functional parts as a whole, the filter has a compact structure; space is effectively saved; fine filtering effect is realized; practical performance of the filter is enhanced; and cost is saved.