Device for quickly disassembling long screw nut of heat exchanger

The invention relates to the technical field of nut removal, and particularly discloses a device for quickly disassembling a long screw nut of a heat exchanger. The long screw nut moves upwards in a spiral mode during the disassembly process, the moving long screw nut uses the interaction force between threads to push an anti-abrasion washer to move upwards so as to drive an inner hexagonal casting to move upwards, so that a sleeve is enabled to move upwards synchronously, and eventually the long screw nut is unscrewed from a long screw of the heat exchanger to achieve the purpose of disassembling the long screw nut. The long screw nut is disassembled by adopting the device, disassembling can be completed independently by only one maintenance person, the removal time of each nut can be reduced to one third of an original manual removal method, the manpower requirement can be reduced to half of manual removal, the working efficiency is greatly improved, the working time is reduced, thecondition that the unit s