Do you know how the ZYB18.3A adjustable pressure residue pump works?

I would like to explain the working principle of the ZYB18.3A adjustable pressure residue oil pump. The impeller structure is divided into four main types: vane type (open and closed), flow channel type, swirl type (including single and double flow channels), and spiral centrifugal type. For more detailed information, please visit: http:// Below is a breakdown of each impeller type and its working principle: **Impeller Structure Types** The first type of impeller is not suitable for transporting media containing large particles or long fibers. In terms of performance, this type has lower efficiency compared to conventional closed impellers, with the highest efficiency reaching about 92% of that of a standard closed impeller. The head curve is relatively flat. **Flow Channel Impeller** This impeller does not have blades, and the flow path from the inlet to the outlet is curved. It is ideal for pumping media with large particles and long fibers, as it offers excellent resistance to clogging. Its efficiency is similar to that of a standard closed impeller, but the head curve drops more steeply. The power curve remains stable, making it less likely to experience over-power situations. However, its overall performance is still slightly lower than that of a closed impeller, and it's best suited for pumps with pressurized inlets. **Swirl Impeller** In this type of impeller, part of the impeller is retracted from the flow passage of the pressure chamber. This design enhances its non-clogging capability, allowing it to pass large particles and long fibers effectively. The suspended particles move within the pressure chamber due to the vortex created by the rotating impeller, and they do not generate energy themselves. Instead, they exchange energy with the liquid, reducing wear on the blades. Since the particles don't come into contact with the blades, there is less damage and no significant increase in clearance due to abrasion. This makes it an excellent choice for handling media with large particles and long fibers. **Closed Impeller** This type of impeller typically has higher efficiency and operates more stably over time. The axial force in the pump is small, and auxiliary blades can be installed on both the front and rear covers. These secondary vanes help reduce vortex losses at the impeller inlet and minimize wear on the seal ring. However, this type of impeller has poor non-clogging properties and is prone to entanglement, making it unsuitable for pumping sewage or oil media containing large particles or long fibers. **Spiral Centrifugal Impeller** This impeller features twisted helical blades that extend axially from the tapered hub body. It combines the functions of a positive displacement pump and a centrifugal pump. As the suspended particles pass through the blade, they do not hit any parts of the pump, which minimizes damage to both the pump and the transported material. It is particularly effective for high-concentration media and media with large particles or long fibers, thanks to the spiral propulsion and high permeability of the suspended particles. This type of impeller is ideal when strict requirements are placed on the integrity of the transported medium. Regardless of the series of ZYB-18.3A adjustable pressure residue oil pumps, the selection of impeller and oil pressure chamber varies depending on the specific medium being pumped and the installation conditions. By optimally configuring the impeller and oil pressure chamber, the pump’s performance can be ensured. For more details, please visit: http://news.chinawj.com.cn

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