The fluid energy at the suction port of the pump

Garden JET Water Pumps

One. The reasons for the Garden JET Water Pumps of the centrifugal pump: 1. The suction pipe of the pump has liquid friction resistance (including local resistance), so that the energy of the liquid at the suction port of the pump is always lower than the pressure on the suction liquid surface of the pump. 2. The fluid energy at the suction port of the pump is lower than the water vapor pressure at the temperature of the liquid sucked by the pump, and the pump sucks the liquid and gas together.

At this time, cavitation occurs, causing the pump to vibrate and sound. In severe cases, the pump stops working. two. To make the pump work normally, the fluid energy at the suction inlet of the pump must not only be lower than the water vapor pressure at the temperature of the pump suction liquid, but also exceed the cavitation margin of a specified small value of the vaporization pressure.

Equipment maintenance 1. Start, run and stop in strict accordance with the operating rules and procedures, and keep operating records. 2. Check the lubrication condition of each lubrication part every shift. 3. After the new bearing is changed, the oil should be cleaned and changed after 100 hours of operation; the oil shall be changed every 1000-1500 hours after operation, and the grease shall be changed every 2000-2400 hours. 4.

Check the bearing temperature frequently, and it should not be higher than the ambient temperature of 35℃; the temperature of the bearing: the rolling bearing should not exceed 75℃, and the sliding bearing should not exceed 65℃. 5. Frequently observe whether the pump pressure and motor current are normal and stable, and whether there is any abnormal sound or vibration in the operation of the equipment, and deal with any problems in time. 6. Keep the surrounding environment of the pump clean and tidy, and eliminate running, leaking, dripping and leakage in time.

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