The cam rotor pump with gear reducer has the following disadvantages:
Pressure Limitation: Generally, the cam rotor pump is not suitable for working conditions where the pressure exceeds 2.5 MPa. Its delivery pressure is relatively low, usually below 1.6 MPa. Compared with some other types of pumps, such as screw pumps which can provide a pressure as high as 20 MPa, its application in high-pressure delivery scenarios is limited.
Limited Solid Content in the Medium: It is not suitable for transporting sludge with a solid content of ≥20%. When the solid content in the medium is too high, it may cause problems such as pump blockage, aggravated wear, and reduced delivery efficiency.
Price Factor: Its price is higher compared to other types of pumps, such as centrifugal pumps, screw pumps, and diaphragm pumps. The initial investment cost is relatively large, which may affect the choice of some cost-sensitive users.
Sensitivity to Medium Characteristics:
Viscosity: When the viscosity of the medium is too high, it will increase the load on the pump, leading to an increase in energy consumption. Meanwhile, it may also affect the flow rate and delivery efficiency, and may even prevent the pump from starting or operating normally.
Corrosiveness: If transporting a medium with strong corrosiveness, higher requirements are imposed on the materials of components such as the pump body, rotors, and seals. Corrosion-resistant materials need to be selected; otherwise, the service life of the pump will be shortened and the maintenance cost will be increased.
High Maintenance Requirements:
Lubrication: It is necessary to regularly check and replenish lubricating oil or grease to ensure good lubrication of components such as rotors and bearings. Otherwise, insufficient lubrication may lead to aggravated wear of components, affecting the performance and service life of the pump.
Seals: Seals such as mechanical seals or packing seals are key components to ensure leak-free operation of the pump. Their sealing performance needs to be regularly checked. If there is a leak, the seals need to be replaced in a time, otherwise it will lead to medium leakage, affecting the working environment and production safety.
Rotor Wear: Although the rotors of the cam rotor pump are relatively wear-resistant, wear may still occur during long-term operation, especially when transporting media containing particles or with high viscosity. The wear will be more obvious. It is necessary to regularly check the wear condition of the rotors and replace severely worn rotors in a timely manner to ensure the normal operation of the pump.
Strict Installation Requirements: During installation, it is necessary to ensure that the foundation of the pump is firm and level, the inlet and outlet pipelines are connected correctly, and sufficient maintenance space is reserved. Otherwise, it may lead to increased vibration and noise of the pump, and even affect the normal operation of the pump.
