Automatic replacement device for particle filter blocks of nitrogen oxide analyzer

The invention discloses an automatic replacement device for particle filter blocks of a nitrogen oxide analyzer. The device comprises a case, wherein a working cavity is formed in the case, and a dismounting mechanism is arranged in the working cavity. The dismounting mechanism comprises a sliding working block which is fixedly connected to the inner wall of the lower side of the working cavity and located on the lower side of an acrylic isolation block, a first sliding cavity with an upward opening is formed in the sliding working block, and a first electromagnet is fixedly arranged on the inner wall of the lower side of the first sliding cavity. By means of the combined action of motors and friction wheels, under the cooperation of electromagnets, the effect that an air inlet block and the acrylic isolation block are disassembled in sequence is achieved, the filter blocks used in the acrylic isolation block are automatically disassembled through a filter block replacement mechanism,and new filter blocks are