Stable Flow
The screw rotor pump belongs to positive displacement pumps and has the characteristic of positive displacement. This means that when the rotational speed of the pump is fixed, the volume of liquid discharged per revolution is basically fixed, enabling it to provide a stable and continuous flow.
For example, during the precise batching process in chemical production, regardless of how the back pressure of the subsequent pipeline system changes, as long as the rotational speed of the pump remains unchanged, it can ensure the accurate delivery of chemical raw materials at the set flow rate, without being affected by pressure fluctuations, effectively guaranteeing the stability of the production process and the consistency of product quality.
Strong Self-priming Ability
This kind of pump can suck in liquid below the horizontal position of the pump and does not require additional priming devices. This is because its internal spiral structure can effectively discharge air when rotating, creating sufficient negative pressure at the inlet to suck in the liquid.
For instance, in a sewage treatment plant, when it is necessary to extract sewage from a lower sewage pool, the screw rotor pump can easily suck the sewage into the pump body, and it can also carry out stable conveyance even if the liquid level changes. This makes it very practical in situations where there are large changes in the liquid level or when long-distance liquid conveyance is required.
Adaptability to High-viscosity Media
It can handle high-viscosity liquids well. Its spiral rotors and special internal structure can effectively reduce the impact of the frictional resistance inside the liquid on the conveyance process when conveying high-viscosity liquids.
Moreover, it can also convey media containing solid particles. For example, in the food processing industry, it can convey materials containing fruit particles such as jam and fruit pulp. In the chemical industry, it can also convey thick polymer solutions which may contain solid components that are not completely dissolved. The screw rotor pump can still successfully complete the conveyance task.
Stable Pressure
The output pressure is stable and can reach a relatively high pressure as needed. During the working process, due to its special screw meshing principle, the liquid is pushed forward gradually and stably, enabling a stable pressure to be established at the outlet.
For example, in long-distance oil pipeline transportation or when conveying liquid to equipment with high resistance (such as filtering equipment for high-viscosity liquids), the screw rotor pump can provide sufficient pressure to ensure that the liquid can be quantitatively and continuously delivered to the destination.
Low Noise and Low Vibration
The special design makes it have low noise and vibration during operation. The internal screw rotates relatively smoothly, and the liquid conveyance process is relatively continuous and uniform, reducing the noise and vibration caused by fluid impact and component friction.
For example, when used in the pharmaceutical delivery system of a hospital or in a laboratory environment with high requirements for noise, the low noise and low vibration characteristics of the screw rotor pump can effectively reduce the interference to the surrounding environment and provide a relatively quiet and comfortable working environment.
Corrosion Resistance and Wear Resistance
It is usually made of materials that are corrosion-resistant and wear-resistant. According to different application scenarios, different materials can be selected for components such as the pump body and rotors.
For example, when conveying highly corrosive acid and alkali solutions in the chemical industry, corrosion-resistant stainless steel or special plastic materials can be selected; when conveying materials containing hard particles, alloy materials with high hardness and high wear resistance can be used, thus extending the service life of the pump.
