Food grade rotary lobe pump is also called colloid pump, lobe pump, three vane pump, universal pump and so on. Food grade rotary lobe pump belongs to volumetric pump. It achieves the purpose of conveying fluid by means of the periodic conversion of several fixed volume conveying units in the working cavity. The mechanical energy of the prime mover is directly converted into the pressure energy of conveying fluid through the pump, and the flow rate of the rotary lobe pump only depends on the volume change of the working cavity and its changing frequency in the unit time, but (theoretically) has nothing to do with the discharge pressure. the food grade rotary lobe pump actually works through a pair of synchronous rotors.
The rotor is driven by a pair of synchronous gears in the box, and the rotor rotates synchronously in the opposite direction driven by the main shaft and auxiliary shaft. The volume of the rotary lobe pump is changed, thus forming a higher vacuum and discharge pressure. It is especially suitable for the transportation of sanitary medium and corrosive and high viscosity medium.
Pay attention to the following aspects of maintenance work must be done.
1, Seals, food grade rotor pump seal is divided into static seal and moving seal, static seal should pay attention to the surface of the seal is not scratched or bruised, otherwise, to directly affect the sealing effect; for moving seal, because it will be subject to pressure and transport medium corrosion, as well as the medium of particle wear and many other factors, if slightly careless, there is likely to be leakage. Once the product leaks, it should be stopped and repaired in time, wiped with a soft and clean cotton cloth and coated with a layer of glycerin. after assembly, the machine can be turned on before it can be used by hand. if there is no hope of repair, new parts should be replaced.
2, Lubricating parts, for food-grade rotary lobe pump transmission gears, rolling bearings, must maintain good lubrication conditions, usually, often pay attention to the level of oil in the gear, give enough lubricating oil, and to ensure that the oil quality is pure and clean, and change the new oil regularly (six months or a year).
3. The electrical system, around the electrical equipment, is not allowed to store instruments, substances or gases that destroy insulation. At the same time, the electrical equipment must be kept working in a dry environment. Moistureproof facilities should be added if it is difficult to avoid.
4. Food grade rotary lobe pump daily maintenance, whenever the machine stops and does not work, the corresponding cleaning agent will be selected according to the nature of the conveying material, the rotary lobe pump will be effectively cleaned, and finally it will be cleaned with clean water to ensure the cleanliness of the pump.
