BOX COVER FOR BUTTON TYPE SEALING BOX AND BUTTON TYPE SEALING BOX

摘要

A cover (100) for a button-type sealing box, comprising: an upper cover (1), a lower cover, a butterfly seal ring (2), a button (3), a rotary sawtooth unit (4) And the rotary sawtooth unit 4 includes a sleeve 401 and N spline teeth 402. [ The bottom and top portions of the spline teeth 402 each include one helical face, and the rotational direction of the upper helical face 404 and the lower helical face 403 is opposite. The upper end of the vertical shaft 5 is fixed to the button 3 and the rotary toothed unit 4 is provided to be rotatable below the vertical shaft 5. The bottom cover of the bottom plate includes a section gear 104. The section gear 104 includes a 2N section gear and the N cover The tooth groove of the spline hole 107 is located at the tooth groove portion of the cross section gear. The bottom cover includes a single 2N-toothed ratchet 705 and the ratchet of the 2N-toothed end ratchet 705 is matched with the spline bottom 402 spiral surface 403, and the N Is greater than or equal to 3. The button-type sealed box cover of the present invention is convenient to assemble, reliable, and stable in operation performance.