Under the action of the total potential energy difference (that is, pressure difference) between the liquid surface of the tank and the center of the impeller, the liquid is sucked into the center of the impeller. ⑥The main engine of the centrifugal pump relies on the atmospheric pressure to pump the water from the low place to the high place, and the atmospheric pressure can only support a water column of about 10. Under the action of inertial centrifugal force, the liquid moves from the center of the impeller to Do radial movement on the outer circumference. When the liquid leaves the impeller and enters the pump casing, it decelerates due to the gradual expansion of the flow passage in the casing. When the centrifugal pump is started, the pump shaft drives the impeller to rotate at a high speed, forcing the liquid pre-filled between the blades to rotate. Relying on the continuous operation of the impeller, the liquid is continuously sucked and discharged. However, there are certain difficulties in the actual operation of the centrifugal pump.. The mechanical energy obtained by the liquid in the centrifugal pump is ultimately manifested as an increase in static pressure energy. Therefore, the pump casing not only collects the parts that flow out of the impeller, but also a kinetic energy device. When the liquid is thrown from the center of the impeller to the outer periphery, the center of the impeller forms a low pressure zone (that is, a vacuum). IIt is forbidden to run without water, do not adjust the suction port to reduce the displacement, and it is forbidden to run under too low flow; ②Monitor the operation process, completely prevent the stuffing box from leaking, and replace the stuffing box with new stuffing; ③Ensure that the mechanical seal is adequate It is forbidden to use excessive water flow for flushing water and water-cooled bearings; ④Do not use too much lubricant; ⑤Check according to the recommended cycle.3m at most, so the main engine of the centrifugal pump cannot work 12 meters away from the water surface. Below we will specifically introduce the problems that should be paid attention to when operating the centrifugal pump. The centrifugal pump suction and discharge pressure, flow rate, input power, temperature of washing liquid and bearing, and vibration should be measured and recorded regularly. The liquid gains energy in the process of moving through the impeller, the static pressure energy increases, and the flow velocity increases. Part of the kinetic energy is converted into static pressure energy and then flows into the discharge pipeline in a tangential direction.The working principle of the centrifugal pump is actually very simple. Establish operating records, including operating hours, adjustment and replacement of packing, adding lubricant China beer brewhouse Supplies and other maintenance measures and time
