Sewage self-priming pumpIt is a centrifugal pump with a certain suction capacity under suction conditions. It mainly combines the principle of gas-liquid mixing with the special structure of the pump to suction gas. A certain degree of vacuum can be achieved in the suction pipeline of the pump, thus realizing the centrifugal function. There is no specialized suction device in a self-priming pump, so it can only rely on its own structure to complete self-priming and quickly enter normal operation. In short, a sewage self-priming pump is a centrifugal pump with self-priming function, which can improve the convenience and reliability of pump operation.

The bearings of the sewage self-priming pump adopt high-quality mechanical seals, and the dynamic and static rings are made of hard alloy, which is wear-resistant, leak free, and has a long service life. Adopting advanced tax profit models, it has the characteristics of high efficiency and good performance. Easy installation, use, and maintenance. The discharge pipeline does not require a check valve, and the suction pipeline does not require a bottom valve, simplifying the pipeline system and improving working conditions.

In order to further improve the structure of the sewage self-priming pump, the main design principle adopted is gas-liquid external mixing, and the hydraulic model has been optimized to enhance the self-priming capacity and comprehensive performance of the pump. The application of dynamic sealing structure has replaced traditional mechanical and packing sealing methods, achieving the function of self-priming without sealing. The start stop of the electromagnetic control valve is synchronized with the motor, achieving automated control.

　　Sewage self-priming pumpThe achievable self-priming height and the actual allowable self-priming height are different, and there is also a certain degree of cavitation problem. Therefore, the cavitation allowance of the pump is an important parameter for selecting the pump; The maximum height of the self pump needs to be calculated through experiments, and it is carried out under normal temperature and clean water conditions. If the weight of the liquid being pumped is different, it should be converted; In practical applications, pipeline losses are relatively large. It is advisable to minimize the use of bends and valves during installation to ensure proper suction; The liquid stored in the sewage self-priming pump is limited. If the self-priming process is carried out for a long time, the temperature of the liquid will increase and heat up, which will affect its vacuum degree and prevent self-priming. Therefore, the horizontal section of the inlet pipeline of the self-priming pump should not be set too long, and the pump should be placed at the beginning of the horizontal pipeline.

In the production of sewage self-priming pumps, material selection can be made according to different types of media. Sewage self-priming pumps have the advantages of simple structure, small volume, and light weight, making their installation and maintenance more convenient. Sewage self-priming pumps also have the characteristics of no leakage and high suction range, so they can replace submersible pumps, long shaft pumps, and submersible sewage pumps for the transportation of low-level media.

　　Sewage self-priming pumpThe application of MBR sewage treatment technology is mainly in MBR membrane bioreactor tanks, which operate by negative pressure suction in the inner cavity of the membrane fibers to extract sewage from the MBR tank and achieve the separation of water and sludge. The water extracted from the sewage self-priming pump enters the disinfection equipment for sterilization and disinfection, and is used for reuse.