Firming storehouse air exchange system is taken to shield structure machine when cutter is changed in cutting

The utility model discloses a firming storehouse air exchange system is taken to shield structure machine when cutter is changed in cutting, solved the shield construct quick -witted tu cang get angry under airtight state the cutting be out of shape the cutter make the storehouse in the air become the problem that the bad people of chocing made cutting work go on. Construct machine knife dish (1) including the shield, the shield constructs quick -witted tu cang (2) and air compressor (7), it warp cutter (3) to be provided with the precut on the shield constructs machine knife dish (1), be provided with on blade disc (1) on one side of the precut warp cutter (3) foaming system filling opening (4), be provided with on the shield quick -witted tu cang of structure (2) native storehouse baffle (5) ball valve (6), be in the same place through intake pipe (8) and foaming system filling opening (4) intercommunication air compressor (7), be connected with on ball valve (6) on native storehouse baffle (5) upper portio