China’s centrifugal sand pump SB series are an integral part of oilfield solids control equipment, the SB sand pumps also widely used throughout the world.
Sandman™ OEM XBSY Centrifugal SB series sand pumps can only be used within the designed range.
1. The main seal of this pump is a mechanical seal, and the packing seal is an auxiliary seal. When the mechanical seal fails, the packing seal can only be tightened, otherwise the machine will
The seal need not be damaged.
1.2 The pump cannot be idle for more than 5 seconds and must be filled with liquid mud before operation, otherwise the mechanical seal will be damaged.
2.1 Pump installation
The pump should be installed as close to the pumping source as possible to shorten the length of the suction section and reduce suction losses. The pump installation foundation should be level, solid and reliable to avoid vibration.
2.2 Coupling or belt installation
The long service life of the direct-coupled pump unit depends on the alignment of the elastic coupling. The coupling of our company’s sand pump unit has been calibrated when it leaves the factory. It needs to be recalibrated during maintenance or replacement of the pump head. A steel ruler can be used to lean up, down, left and right on the coupling. With the naked eye, the ruler and all sides of the outer circle of the coupling should be in close contact and opaque. That is, all sides of the outer circle of the coupling should be in a straight line to ensure that the motor shaft is in contact with the coupling. Coaxiality of the pump shaft. The belt tension of the belt drive pump unit is appropriate. It is not suitable to be too tight or too loose. The inspection method is: when a 100N force is applied perpendicularly to the belt at the midpoint of the span of the belt, the deflection of the belt in the vertical direction is 10mm, and the axis of each pulley should be Parallel to each other, the symmetry planes of the V-shaped grooves corresponding to each pulley should coincide with an error of no more than 20′. After the coupling or belt is installed, the protective cover must be installed before operation to prevent safety accidents.
2.3 Inlet pipeline installation
A. The suction pipeline should match the pump inlet.
B. Throttle valves are not allowed to be installed in the suction pipeline, but normally open valves can be installed to reduce turbulence in the liquid flow. This valve can only be closed when the pump is disassembled for maintenance.
C. To avoid bubbles in the suction line, the pumping source and pump should gradually transition from high to low. If the user needs the pump to be used with a suction lift, please use a vacuum pump or bottom valve to divert water.
D. The pipe at the pump inlet must be straight and its length should be at least twice the diameter of the suction pipe.
E. When a hose is temporarily used as the suction line, it must be ensured that the hose is not compressed. This is because the pressure in the suction section is generally lower than the atmospheric pressure. Under the action of atmospheric pressure, the hose is compressed, resulting in reduced flow or even interruption flow.
2.4 Outlet pipeline
A. To facilitate pump maintenance, a normally open valve should be installed in the outlet pipeline.
B. All pipelines (including inlet pipelines) must have their own support, and the pump is never allowed to bear the weight of the pipelines.
C. When the working conditions are unknown or unstable, a throttle valve must be installed in the outlet pipeline to ensure that the pump operates at the design point.
D. When the pump outlet is connected to the pressure equipment, a check valve must be installed between the throttle valve and the pump outlet to prevent liquid from flowing back. Otherwise, the backflow liquid will cause “water hammer” and damage the pump.
A. When turning the pump shaft by hand, it must ensure flexible operation and there must be no friction sound anywhere.
B. Check the steering direction and make sure it is consistent with the pump’s required steering direction.
C. Fully open the valve of the suction pipe.
D. Fill the pump body and inlet pipe with liquid to discharge air.
A. After all preparations are completed, start the motor.
B. After the motor is running normally, check the ammeter display in the motor starting control cabinet. If the rated current of the motor is exceeded, the throttle valve should be adjusted appropriately so that the motor current is within the rated current to ensure that the pump and motor work efficiently and safely at the design point.
C. Check the temperature rise of the bearing after 2 hours of normal operation of the pump. The temperature at the bearing should not be higher than 80°C.
D. If there is severe vibration, abnormal sound or other abnormal phenomena, the power supply should be cut off immediately to prevent accidents, identify the cause, and eliminate the fault.