How can we prevent the impeller of a high-pressure blower from being damaged?

When the impeller rotates, due to the effect of centrifugal force, the wind vane prompts the gas to move forward and outward, thus forming a series of spiral movements. The air between the impeller blades rotates at an accelerated spiral speed and pushes the gas outside the pump body into the side channel (sucked in through the suction port). When it enters the side channel, the gas is compressed and then returns to the impeller blades to accelerate again. When air moves along a spiral path through the impeller and side channels, each impeller blade increases the degree of compression and acceleration. As the rotation proceeds, the kinetic energy of the gas increases, further raising the pressure of the gas passing through the side channels. When the air reaches the connection point between the side channel and the discharge flange, the gas is forced out of the blades and discharged from the pump body through the outlet muffler.

The internal impeller of a high-pressure blower is the core component of the blower. The reason why the blower can generate flow and pressure is that the motor drives the impeller to rotate, causing a pressure change in the gas.

Although the fan impeller looks simple and clear, the rest is produced through multiple processing techniques and precise balance tests during manufacturing. These processing procedures are invisible to users, which is why such an idea exists.

The internal impeller of the high-pressure blower is damaged, which is mainly due to impurities entering the interior, affecting the rotation of the impeller. Because the internal gap is very small, the debris hinders normal operation and directly collids with the impeller blades at high speed. The force is very strong because the rotational speed is 45 revolutions per second. Once the debris enters and collids, the impeller will be broken or damaged at best, and it will also affect the motor at worst.

So, how can we prevent the impeller of a high-pressure blower from being damaged?

As mentioned above, the cause is that foreign objects have entered the fan and been sucked in through the inlet. Therefore, to address the root cause, a fan filter can be installed to remove the dangerous substances that pose a threat to the fan from their initial state.

There is another situation, which is relatively rare. It is when the bearing supporting the front panel is damaged. If the internal balls fall off, it will cause the height of the impeller to drop, and the impeller of the fan will rub against the inner wall. At this time, the impeller blades will be damaged over a large area or all the blades will be knocked off, which is a serious situation.

The bearing was damaged and the balls fell off, causing extensive damage to the fan impeller. It is necessary to replace the impeller and new bearings. The bearings used in conjunction with this high-pressure blower are high-speed and high-temperature resistant *nsk bearings. If the customer replaces them with domestic brands or low-quality bearings by themselves, they will be damaged in a short time. So be sure to pay attention.

If during operation, you hear an abnormal sound about the running time, you should stop the machine for inspection to avoid more serious consequences. If it gets damaged, it will be time-consuming, laborious and costly.