Cam rotor pump and gear pump are two different types of forward displacement pumps, which have significant differences in working principles, structures, operating noise, and applicable scenarios. twelveworking principle:The cam rotor pump generates positive displacement through the rotation of the inner and outer rotors, achieving the suction and discharge of liquid. The rotor of this pump does not directly contact or mesh, and there is a gap between all the relative moving overcurrent components inside the pump, which is beneficial for improving the service life of the pump and allowing the conveyed liquid to contain fine solid particles, reducing the probability of particle wear and ensuring the integrity of the particles.
Gear pumps generate liquid suction and discharge through the gap between two meshing gears. One driving gear is driven to rotate by the motor, and the other driven gear meshes with the driving gear to rotate. As the two teeth gradually separate, the volume of the working space gradually increases, forming a partial vacuum. The liquid is sucked in under atmospheric pressure and then pushed out along the inner wall of the pump body by the gear.Structure:The cam rotor pump is mainly composed of an inner rotor, an outer rotor, a housing, and an end cap. There are many types of rotors for this type of pump, and they are generally more precise. The rotor separates the suction fluid at the inlet and reduces the space or volume for rotor cracking at the outlet, squeezing the fluid out.
A gear pump consists of two gears, a housing, and an end cap. The working principle of gear pumps determines that their structure is relatively simple, and due to the meshing of gears, their operating noiseisrelatively high.Operating noise:The clearance between the inner and outer rotors of the cam rotor pump is very small, and the flow of liquid in the pump body is very smooth, so its operating noise is relativelylow.Due to the meshing of gears, gear pumps produce relatively high operating noise.Applicable occasions:
Cam rotor pumps are suitable for conveying viscous liquids such as grease, asphalt, coatings, as well as liquids containing solid particles, fiber media, or highly corrosive, shear sensitive, or gas containing media. This type of pump has strong wear resistance and corrosion resistance, making it particularly suitable for transporting media containing solid particles.
Gear pumps are suitable for transporting low viscosity liquids such as gasoline, lubricating oil, etc. They are generally used as metering pumps, with small liquid processing capacity but high head, and easy control of dosing amount.
In summary, although cam rotor pumps and gear pumps are both forward displacement pumps, there are significant differences in their working principles, structures, operating noise, and applicable scenarios. Users should choose according to their specific application needs.
