The utility model provides an automatic drilling sample block taking and placing device for separating membrane shell products, and belongs to the technical field of
membrane method separation. The problem that an existing membrane shell drilling technology cannot achieve automatic
machining is solved. The drilling tool comprises a drilling tool, a movable sealing jacket, a mechanical sealing
assembly, a
positive pressure mechanism and a negative pressure mechanism, the drilling tool comprises a connecting rotating shaft and a
tool bit, a reducing through hole is formed in the connecting rotating shaft in the axial direction and communicated with an inner cavity of the
tool bit, a plurality of
airflow channels are formed in the position, at the reducing position of the reducing through hole, of the connecting rotating shaft in the radial direction, and the
airflow channels are communicated with the
positive pressure mechanism and the negative pressure mechanism. The multiple
airflow channels are communicated with the variable-
diameter through hole, the movable sealing clamping sleeve is arranged on the outer side of the connecting rotating shaft in a sleeving mode, the upper end and the lower end of the movable sealing clamping sleeve are symmetrically arranged and rotationally connected with the connecting rotating shaft, an airflow cavity is formed in the movable sealing clamping sleeve, and the airflow cavity is communicated with the variable-
diameter through hole of the connecting rotating shaft through the airflow channels. The drilling
machine is mainly used for the membrane shell drilling process.