Pipeline emulsifier is also called emulsifier pump. Emulsifier pump is divided into single-stage and three-stage. The working chamber of emulsifier pump and motor are connected by direct connection and coupling. Direct connection is to connect the motor and the working chamber of emulsifier pump with two ends of shaft sleeve respectively. The coupling is the shaft of working chamber passing through the bearing seat through coupling and motor. To be connected. No matter which kind of link is tried, the mechanical seal device is needed for the joint between the working chamber and the shaft.
The installation of mechanical seals includes two forms: cavity sealing and cavity sealing. Intracavity seal is to install mechanical seal device in the working chamber, and exterior seal is to install mechanical seal device outside the working chamber.
The advantage of the cavity seal is that the mechanical seal device has material for cooling, not allowing additional cooling device, easy maintenance and replacement, simple and quick; the cavity seal is divided into single end face seal and double end face seal, single end face seal is also material for cooling, do not need to set up another cooling device, but the double end face seal needs to be set up separately. Seal the cooling device. The principle of double-face seal is to seal two static rings and two moving rings, respectively, sealing shaft and working cavity, sealing shaft and cooling cavity. The advantages of double-face seal are that it reduces the probability of leakage of seal, ensures no leakage of equipment to the greatest extent, improves the performance of equipment and reduces pollution, but the maintenance and replacement of double-face seal is complex, and consumes man-hour. Long, high maintenance cost.

Keywords laboratory emulsifier; Shanghai emulsifier; static mixer.