ALLWEILER screw pump And centrifugal pumps are two common types of pumps, which have different advantages and disadvantages in fluid transportation and treatment. To conduct comparative evaluation, we can analyze from the following aspects:

1. Structure and working principle: Screw pump The relative rotation of screw rotor and stator is adopted to realize the fluid transmission. Since there is an obvious gap between the surface of the screw rotor and the stator of the screw pump, there will be no friction and wear, and the operation is stable. The centrifugal pump pushes the liquid from the center to the surrounding through centrifugal force. Its structure is relatively simple, but it is vulnerable to the influence of liquid viscosity and particles.

2. Scope of application: screw pump is suitable for conveying liquids with high viscosity, high temperature, particles or volatile substances, such as oil, syrup, asphalt, colloid, etc. The centrifugal pump is suitable for conveying low viscosity, clean liquids without particles, such as water, solution, etc. COLFAX agent

3. Operating efficiency: Due to the working principle of the screw pump, the energy consumption during liquid transportation is relatively low, so the energy efficiency of the screw pump is high. The centrifugal pump needs to overcome the resistance of centrifugal force and friction when delivering liquid, so its energy efficiency is relatively low.

4. Liquid conveying capacity: under the same size, the liquid conveying capacity of the screw pump is relatively small, but its conveying pressure is high. It is suitable for conveying liquid with small flow but high pressure. Centrifugal pump is suitable for conveying large flow of liquid.

5. Maintenance and failure rate: Due to the complex structure of the screw pump, maintenance and repair are difficult. The structure of centrifugal pump is relatively simple, CIRCOR SECCO Maintenance and repair are relatively easy. However, due to the influence of particles, centrifugal pumps are prone to blockage, wear and other failures.

6. Noise and vibration: the screw pump has relatively small noise and vibration during operation and works steadily. The centrifugal pump has large noise and vibration during operation, so some measures need to be taken to reduce its impact on the surrounding environment.

In general, screw pump and centrifugal pump have different advantages and disadvantages in different application scenarios. Screw pumps are more suitable for conveying liquids with high viscosity, high temperature and particles; Centrifugal pumps are more suitable for delivering clean, particulate free, large flow liquids. During the comparative evaluation, we need to select the appropriate pump type according to the specific application needs and liquid characteristics, and make comprehensive analysis in combination with its structure, working principle, energy efficiency, liquid delivery capacity, maintenance and failure rate, noise and vibration. Viking