BPL series vertical single-stage centrifugal pump: How to ensure efficient and stable delivery of corrosive media with advanced sealing and lubrication technology?

When conveying corrosive media, the sealing performance of the pump body is crucial. Once the seal fails, the leakage of the medium will not only cause environmental pollution, but also may cause safety accidents, seriously affecting the normal operation of the production line. The BPL series vertical single-stage centrifugal pump adopts advanced sealing technology to effectively solve this problem.

The BPL series centrifugal pump adopts a combination of mechanical seal and packing seal to ensure the sealing performance between the pump shaft and the pump casing. The mechanical seal relies on spring force and medium pressure to make the sealing surface fit tightly, effectively preventing medium leakage. At the same time, the friction pair material of the mechanical seal is selected from high-performance wear-resistant and corrosion-resistant materials, such as silicon carbide, tungsten carbide, etc., to ensure long-term stable operation in corrosive media.

The BPL series centrifugal pump also adopts a double-end mechanical seal design. When the sealing surface on one end is worn, the other end can continue to work, effectively extending the service life of the seal. In addition, the double-end mechanical seal can also discharge the medium accumulated in the sealing cavity in time through the external flushing system, further reducing the risk of leakage.

In addition to mechanical seals, the BPL series centrifugal pumps are also equipped with packing seals as auxiliary seals. The packing seals are composed of soft and wear-resistant packing rings. Pressure is applied through the gland to make the packing rings fit tightly with the pump shaft to form an effective seal. The packing seal has a simple structure and is easy to maintain. It can also compensate for the radial runout of the pump shaft to a certain extent and improve the reliability of the seal.

Bearings are one of the key components of centrifugal pumps, and their operating status directly affects the overall performance and service life of the pump. When conveying corrosive media, bearings are easily eroded and worn by the media, resulting in performance degradation and even failure. The BPL series vertical single-stage centrifugal pumps adopt an efficient lubrication system, which effectively reduces bearing wear and extends the service life of the equipment.

The lubrication system of the BPL series centrifugal pumps is mainly composed of oil tanks, oil pumps, filters, coolers and other components. The oil pump draws the lubricating oil from the oil tank, filters it through the filter, and then sends it to the bearing cavity for lubrication. The lubricating oil forms an oil film in the bearing cavity, which effectively reduces the friction and wear between the bearing and the journal. The lubricating oil can also take away the heat generated by the bearing, reduce the bearing temperature, and increase the service life of the bearing.

In order to ensure the cleanliness and stability of the lubricating oil, the lubrication system of the BPL series centrifugal pump is also equipped with a precision filter. The filter can effectively remove impurities and particulate matter in the lubricating oil, preventing them from entering the bearing cavity and causing damage to the bearing. In addition, the filter can prevent the erosion of the bearing by moisture and corrosive media in the lubricating oil, further improving the corrosion resistance of the bearing.

When conveying high-temperature media, the lubrication system of the BPL series centrifugal pump is also equipped with a cooler. The cooler takes away the heat in the lubricating oil through the heat exchange principle, reduces the temperature of the lubricating oil, and ensures that the bearing runs at a suitable temperature. This not only increases the service life of the bearing, but also reduces energy consumption and maintenance costs.

In addition to advanced sealing technology and lubrication system, the BPL series vertical single-stage centrifugal pump also adopts a unique impeller design and fluid dynamics optimization to ensure the efficient and stable performance of the pump when conveying corrosive media.

The impeller of the BPL series centrifugal pump adopts an open or semi-open structure, and the blade shape is precisely calculated and optimized to make the fluid flow in the impeller smoother, reducing energy loss and eddy current phenomenon. At the same time, the impeller is made of high-performance corrosion-resistant materials, such as stainless steel and alloy steel, to ensure long-term stable operation in corrosive media.

In terms of fluid dynamics optimization, the BPL series centrifugal pump optimizes the flow channel of the pump through computational fluid dynamics (CFD) simulation analysis. Simulation analysis can simulate the flow state of the fluid in the pump body and predict parameters such as the pressure distribution, velocity distribution and energy loss of the fluid. Through optimized design, the BPL series centrifugal pump can reduce the flow channel resistance, improve the efficiency of the pump, and reduce the scouring and wear of the pump body by the medium.

The BPL series centrifugal pump also adopts an adjustable impeller and guide vane design, so that the performance of the pump can be adjusted according to actual needs. By adjusting the speed of the impeller or the angle of the guide vane, the flow rate and head of the pump can be changed to meet the delivery needs under different working conditions. This adjustability not only improves the flexibility of the pump, but also reduces energy consumption and maintenance costs to a certain extent.