Hydraulic Arrangement for an Apparatus for Deblocking Workpieces, in Particular Eyeglass Lenses, from Associated Block Pieces

A hydraulic arrangement (HA) for an apparatus (AV) for deblocking optical workpieces (L) from associated block pieces (B), comprising:

• a nozzle arrangement (DA) for delivery of high-pressure pressure medium jets for deblocking the workpiece (L) from the associated block piece (B) at a first pressure and for cleaning the deblocked workpiece (L) and/or the block piece (B) at at least one second pressure different from the first pressure, and
• a pump device (PE) which separates a low-pressure section (NDA) from a high-pressure section (HDA) of the hydraulic arrangement (HA) and serves the purpose of loading the pressure medium, which is fed by way of the low-pressure section (NDA), in defined manner with pressure and of conveying it under pressure to the nozzle arrangement (DA) in the high-pressure section (HDA),
• characterized in that the pump device (PE) comprises a first high-pressure pump (HP1) and a second high-pressure pump (HP2), wherein at least the first pressure can be generated by the first high-pressure pump (HP1) and at least the second pressure can be generated by the second high-pressure pump (HP2).