The reason and solution of suction pump humming without water

The reasons and solutions for the humming of the self-priming pump without water are as follows:

The reason:

Pipeline problems:

Pipe leakage: There is gas leakage at the pipe connection, which causes the self-priming pump to fail to absorb water normally.

Pipe passing length: The pipe length is too long, resulting in insufficient suction, and the self-priming pump cannot absorb water normally.

Too many elbows: the number of pipe elbows is too much, and the suction of the self-priming pump is lost.

Self-priming pump itself:

Air intake blockage: The air intake of the self-priming pump is blocked, resulting in poor suction.

Mechanical seal water leakage: mechanical seal water leakage affects the self-priming capacity of the self-priming pump.

Impeller damage or wear: The impeller inside the pump body is damaged or worn, resulting in the pump can not work normally.

Blockage inside the pump body: the inside of the pump body or the pipeline filter is blocked by debris.

Voltage problem:

Voltage is too low: the effective voltage is not reached, resulting in the normal operation of the self-priming pump.

Installation and operation problems:

Not adding enough liquid during installation: When the self-priming pump is used for the first time, the pump does not add enough liquid.

Three-phase motor wiring reverse: motor wiring error, resulting in pump reversal.

The proportion of liquid is too large: the proportion of the self-imbibition liquid is too large, affecting the self-imbibition effect.

The solution:

Check and repair piping:

Check whether there is any air leakage at the pipe connection. If there is any air leakage, tighten and repair it in time.

Shorten the pipe length or reduce the suction to ensure that the effective suction range of the self-priming pump.

Reduce the number of pipe elbows, control within 1-2.

Clean and maintain self-priming pump:

Clean the intake hole of the self-priming pump to ensure that the intake air is smooth.

Replace with a new mechanical seal to avoid water leakage.

Replace the new impeller to ensure that there is no damage inside the pump body.

Check and clean the inside of the pump body and the pipeline filter screen to ensure that there is no debris blockage.

Adjust voltage:

Adjust the voltage to the effective range to ensure the normal operation of the self-priming pump.

Standard installation and operation:

Make sure the pump is filled with liquid before initial use.

Check whether the three-phase motor wiring is correct and avoid reversal.

Select the appropriate self-priming pump type according to the specific gravity of the self-priming liquid.

Check and repair according to the above method, should be able to solve the problem of self-priming pump buzzing but not water. If the problem persists, it is recommended to contact maintenance personnel for inspection and repair.