At work, the emergency flood control pump truck relies on a high-speed rotating impeller, and the liquid obtains energy under the action of inertial centrifugal force to increase the pressure. Before the centrifugal pump is in operation, the pump body and the inlet line must be filled with liquid medium to prevent cavitation. When the impeller rotates rapidly, the blade causes the medium to rotate rapidly, and the rotating medium flies out of the impeller under the action of centrifugal force. After the water in the pump is thrown, the central portion of the impeller forms a vacuum region. The liquid is continuously sucked in while continuously giving a certain amount of energy to the inhaled liquid to discharge the liquid. The emergency flood control pump truck works continuously and continuously.
Maintenance of emergency flood control pump truck:
(1) Check the self-priming pump piping and joints for looseness. Turn the self-priming pump with your hand or tool to see if the rescue pump is flexible.
(2) Try to control the flow rate and lift of the self-priming pump within the range indicated on the label to ensure that the self-priming pump operates at the rate point to obtain high-quality energy-saving effects.
(3) During the operation of the self-priming pump, the bearing temperature should not exceed the ambient temperature of 35C, and the temperature must not exceed 80C.
(4) If the self-priming pump is found to have abnormal sound, stop immediately and check the cause.
(5) When the emergency flood control pump truck is to be stopped, first close the gate valve and pressure gauge, then stop the motor.
(6) When the emergency flood control pump truck is not used for a long time and used in the cold winter season, after parking, the water plug of the lower part of the pump body should be unscrewed to release the medium. Prevent freezing cracks.
(7) Carefully listen to the abnormal operation sound of the motor. Because the noise in the engine room is large during operation, you can use the auxiliary tools such as a screwdriver or a stick to attach the two ends of the motor. If you listen frequently, you can find the motor and its drag. The bad vibration of the moving equipment can be judged by the number of internal bearing oils, so that the bearing oil can be added in time, or the new bearing can be replaced to deal with the corresponding measures, so as to avoid the motor bearing lacking oil dry grinding and blocking, turning the outer circle and broom. Burned out.
