Submersible electric pump structure QJ type submersible electric pump is mainly composed of QJ type submersible pump and YQS type submersible motor two. The pump body of the QJ type submersible electric pump is located at the upper end of the motor, the impeller is a centrifugal type, and the water lubricated rubber bearing is used for bearing, and the pump is connected with the motor shaft by the shaft coupling. The upper end of the water pump is provided with an anti check valve body, which is used to prevent the water from flowing backwards to reverse the submersible electric pump when the water pump stops. YQS type submersible motor stator winding using polyethylene insulated nylon sheath electromagnetic wire. The motor cavity filled with clean water, with the motor cooling and lubricating vehicles bearing, motor inside the rubber transfer film can adjustment because of motor temperature rise caused by this organism in the water swelling shrinkage pressure difference, the upper end of the motor shaft with by throwing sand ring and two reverse device sand control device, obstacle free water mud and sand into the interior of the body.
Preparation work before the device due to the use of electric pump bearings lubrication material, so it must not be dehydrated. Even in a short period of time to start the motor must be sure to avoid dry work, so as not to damage the pump bearing. Motors have some of the view: before the motor under the well, should be to see its assembly quality is not good, the fastener has no loose phenomenon, cable has no damage, power and electrical equipment is not reliable. The voltage and frequency of power supply is not consistent and nameplate; change view of the motor shaft is not sensitive. As well as the transportation on the way there is no damage, pump shaft change is not sensitive, the axial direction is not to reach the requirements of the valve, the check valve is not action. The pump into the well before, must use clean water (not sediment) filled with motor.
