The structure and working principle of self suction centrifugal oil pump are the same as troubleshooting the inability to discharge liquid

1. Working principle of self suction centrifugal oil pump

1. Working principle of self suction centrifugal oil pump

The driving machine drives the impeller to rotate through the pump shaft, generating centrifugal force. Under the action of centrifugal force, the liquid is thrown towards the outlet of the impeller along the blade flow channel, and is collected and sent into the discharge pipe through the volute.

. The liquid obtains energy from the impeller, increasing both pressure and velocity energy, and relies on this energy to transport the liquid to the workplace. As the liquid is thrown towards the outlet of the impeller, a low pressure is formed at the center of the impeller inlet, creating a pressure difference between the liquid in the suction tank and the center of the impeller. Under this pressure difference, the liquid in the suction tank continuously enters the impeller through the suction pipeline and pump suction chamber

2. Structure and Main Components of Self suction Centrifugal Oil Pump

A self suction centrifugal oil pump is mainly composed of pump body, impeller, sealing ring, rotating shaft, shaft seal box and other components. Some self suction centrifugal oil pumps are also equipped with guide wheels, inducers, balance plates, etc.

3. Working principle and characteristics of mechanical seals

Mechanical seals, also known as end face seals, are dynamic seals used for rotating shafts.

. It relies on the pressure of the spring and sealing medium to generate appropriate compression force on the contact surface of the rotating dynamic and static rings, making these two end faces tightly fit (maintaining a layer of oil film between the end faces to lubricate the dynamic and static rings). Therefore, the medium has a high resistance when passing through, thereby preventing liquid leakage and achieving the sealing purpose

Secondly, troubleshooting the inability to discharge liquid in the self suction centrifugal oil pump

When the self suction centrifugal oil pump cannot discharge liquid normally during operation, check the opening of the outlet valve of the self suction centrifugal oil pump and confirm that the outlet valve is in a normal open state.

. Determine the reason why the self suction centrifugal pump does not discharge liquid. When cavitation occurs in the self suction centrifugal pump, the pump vibrates and cannot suck in the liquid, resulting in no liquid being discharged. To carry out venting treatment and clean the gas inside the pump, it is necessary to promote the normal suction of liquid by the self suction centrifugal oil pump, in order to promote the normal operation of the self suction centrifugal oil pump

If the motor reverses, it causes the pump to rotate in the wrong direction and cannot discharge liquid. By changing the wiring of the motor to rotate in its normal direction, the fault can be resolved. The suction pipeline of the pump is blocked, causing the pump to not be able to suck liquid. The problem of difficult suction can be solved by reducing the resistance of the suction pipeline or connecting a small booster pump in front of the self suction centrifugal pump. The self suction centrifugal pump achieves the designed pump efficiency