Quick -open type annular cassette tape

The utility model discloses a quick -open type annular cassette tape, this quick -open type annular cassette tape includes: support frame and holding ring, the support frame setting is on the casing,the holding ring sets up on lid and casing, the holding ring is located to snap ring, snap ring cover, and the support frame is used for supporting the snap ring, first regulation stand, first regulation stand sets up the one end at the snap ring, the stand is adjusted to the second, and the other end of stand setting at the snap ring is adjusted to the second, adjusting threaded rod, adjusting threaded rod pass the screw hole on first regulation stand and the second regulation stand, and through rotatory adjusting threaded rod, first regulation stand can be close each other or keep away fromeach other with second regulation stand. This quick -open type annular cassette tape is to the sealed of filter and to set up the effect better, and simple structure opens the convenience simultaneously. 本实用新型公开了种快开式环形卡带，该快开式环