Metering pump - Import export

Magnetic coupling is widely used in various fields such as magnetic drive of sealing vacuum of metering pump of polyurethane foamer, magnetic drive of pneumatic ball valve, magnetic drive of stirring reactor, etc. to prevent leakage of raw gas. Magnetic coupling is mostly used in high vacuum, high cleanliness, poisonous, corrosive, or harsh environment to transfer power from the driving shaft to the driven shaft. Because of the use of isolation seal sleeve, dynamic seal into static seal, zero leakage can be achieved.

The APG-process by HÜBERS permits short cycle times thanks to rapid gelation and demoulding with automatic opening and closing of the mould. During the gelling process, fresh material is supplied continuously to the mould under pressure in order to prevent cracks and voids and to compensate for the shrinkage of the material. The mould is held together by the clamping machine. The degassed material is injected into the APG mould directly from the static mixer. Shrinkage compensation is carried out by the HÜBERS metering pumps. One central mixing and metering system can serve several clamping machines. In this case each clamping machine has its own static mixer positioned directly in front of the mould and also has its own shrinkage compensation unit to maintain the pressure. The system is supplied via a ring line which requires no maintenance and is free of sedimentation. In principle the length of this line is insignificant.