Precautions When Operating Sanitary Negative Pressure Pumps

The flow parts of the fluoroplastic magnetic drive pump are made of "polyvinylidene fluoride plastic alloy (PVF2) and ultra-high molecular weight polyethylene (UHMWPE)". At room temperature, PVF2 has good corrosion resistance to halogens, halogenated hydrocarbons, strong fluorinating agents, boiling acids, alkalis and other organic solvents; UHMWPE has good corrosion resistance to non-fluorinated acids (dilute sulfuric acid, nitric acid and high concentrations of hydrochloric acid, phosphoric acid, hydrofluoric acid, formic acid, acetic acid), ammonia and amines and various alkalis and salt solutions. Both materials are not resistant to strong fluorinated acid corrosion. The outer shell of the fluoroalloy pump is made of metal material, which has sufficient strength to withstand the mechanical impact of the pipeline and the outside world. The transmission power below 3KW adopts a full fluorine structure. The leak-proof design cancels the shaft seal and uses magnetic coupling for indirect drive, completely eliminating the trouble of dripping and never polluting the use site. Since the flow part of the magnetic pump is made of "fluoroplastic alloy". It can continuously transport corrosive media such as acids, alkalis, strong oxidants, etc. of any concentration without damage.

Sanitary Negative Pressure Pump Precautions during operation

1. Prevent particles from entering

(1) Ferromagnetic impurities and particles are not allowed to enter the magnetic transmission device and bearing friction pair. (2) After conveying media that are easy to crystallize or precipitate, flush it in time (fill the pump cavity with clean water after stopping the pump and drain it after running for 1 minute) to ensure the service life of the sliding bearing. (3) When conveying media containing solid particles, filter it at the inlet of the pump flow pipe.

2. Prevent demagnetization

(1) The magnetic torque cannot be designed to be too small. (2) It should be operated under the specified temperature conditions, and the medium temperature is strictly prohibited from exceeding the standard. A platinum resistance temperature sensor can be installed on the outer surface of the magnetic pump isolation sleeve to detect the temperature rise in the annular gap area, so as to alarm or shut down when the temperature exceeds the limit

3. Prevent dry friction

(1) Idle running is strictly prohibited. (2) Medium evacuation is strictly prohibited. (3) When the outlet valve is closed, the continuous operation time of the pump shall not exceed 2 minutes to prevent the magnetic transmission device from overheating and failure.