Solutions to air in centrifugal pumps

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Air in the centrifugal pump can be removed to eliminate air inside the pump. Before starting a horizontal centrifugal pump, sufficient water should be filled in to remove the air from inside the pump. Regularly opening the exhaust valve on the horizontal clean water centrifugal pump is necessary to eliminate the air that has accumulated within it. 01、Reasons for air in the centrifugal pump: Air entering the centrifugal pump is caused by a leaky suction system. Common areas where leaks can occur include loose connections in the intake pipeline system, inadequate packing seals, and loose vacuum pump fittings. These situations are all causes of air accumulation inside the centrifugal pump. 02、Solutions for air in the centrifugal pump: Air in the centrifugal pump is caused by a leaky suction system. Locate the area where air is leaking in the suction system and carry out repairs; if it is related to the design, install stop valves at places in the centrifugal pump and suction pipeline system where air may accumulate, in order to remove that accumulated air during the pumping process. When a centrifugal pump experiences cavitation, it emits abnormal noises and vibrations; its flow rate and head decrease, and it may even lose its self-priming capability. For applications that require self-priming capability, it is recommended to use self-priming centrifugal pumps. 1. Prevent air leakage from the stuffing box. The tightness of the stuffing box should be adjusted properly; if it is too loose, the packing gland should be tightened. The packing will become ineffective if it is damaged and needs to be replaced. A blocked water seal tube at the stuffing box cover can cause air leakage from the cover, and in such cases the water seal tube should be cleaned. 2. The installation location of the horizontal centrifugal pump should be as close to the water surface as possible, to ensure that no air is drawn in when the water level drops. 3. When installing the water intake pipeline, the horizontal inlet pipe should be installed horizontally; no point on the inlet pipe shall be higher than the inlet of the centrifugal pump, otherwise air cannot be completely expelled