Slip-type wellhead quick fitting apparatus

The invention relates to a slip-type wellhead quick fitting apparatus, comprising a connecting flange (1). A blowout preventer is connected to an upper end of the connecting flange (1), and a core sleeve (2) sleeves a lower end of the connecting flange (1) in a threaded manner. The lower portion of the core sleeve (2) is provided with a slip (3) sleeving the outside of the core sleeve (2). An outer tube (4) is provided outside the core sleeve (2) and the slip (3). The inner wall of the lower portion of the outer tube (4) and the outer wall of the lower portion of the slip (3) are provided with corresponding conical faces; the slip (3) forms space for receiving a casing (5). The casing (5) extends into the space and finally abuts to the lower end of the core sleeve (2). The slip-type wellhead quick fitting apparatus is simple in structure, good in sealing effect and convenient to operate.