What is a BB pump

From Baidu: The BB pump is compact and equipped with various status displays and protection mechanisms, ensuring safe and reliable operation of the pump. Structural Features of BB Pumps and Product Overview Structural Features of BB Pumps The BB pump is compact, and it is equipped with various status displays and protection devices, ensuring safe and reliable operation of the pump.   1. The BB pump features a unique cable sealing design that eliminates the risk of water leakage from the cables.   2. The stator of the bb pump is equipped with F-class insulation and thermal protection components.   3. Pumps with a power of 18.5 KW or higher for the bb pump type are equipped with external circulating water cooling to ensure the safe operation of the electric pump at the lowest water level.   4. A float switch is installed at the bottom of the motor chamber of the bb pump to monitor the mechanical seal on the motor side.   5. Oil and water probes are installed at the upper end of the oil chambers of the bb pump and motor to monitor the mechanical seal on the water pump side; should leakage occur, the control system will issue an alarm for protection.   6. Bellows-type double-end mechanical seal, with sealing materials of tungsten carbide, silicon carbide, and cemented carbide, to prevent water from entering the motor and ensure its safe and reliable operation.   7. The auxiliary impeller is used to balance the external pressure of the mechanical seal and prevent water from entering the oil chamber, thereby extending the service life of the electric pump.   8. The impeller features a unique design; its large flow channels allow long fibers and debris to pass through, providing resistance to clogging, prevention of entanglement, and strong flow capacity.   9. A replaceable wear-resistant sleeve is installed between the impeller of the BB pump and the lower end of the volute, enabling the BB pump to operate at optimal efficiency.   Overview of BB pump products: The BB pump is a single-stage, single-suction, cantilevered centrifugal pump. The suction inlet of the sewage centrifugal pump is axially horizontal, while the discharge outlet of submersible pumps and sewage submersible pumps can be arranged horizontally or vertically as required. The BB pump is mainly composed of components such as the pump cover, pump casing, impeller, shaft seal, shaft, and bracket. The shaft seal adopts a novel double-end mechanical seal design. The submersible pump and the motor are installed on the same chassis, with the BB pump being directly driven by the motor through an elastic coupling. This BB pump features high efficiency, significant energy savings, stable operation, reliable performance, and easy maintenance.   All BB pump products are designed and optimized using computers (materials: cast iron, stainless steel)

Pumps with dual supports all belong to the BB type. As for BB1, BB2, and BB3, it’s a matter of the specific structure of the pump body – double casings, segmented design, and so on