Maintenance of high-pressure blowers

The impeller of the high-pressure blower designed according to the regeneration theory circulates in the air duct to accelerate and increase the pressure. The unique single-sided, single-stage impeller rotates to produce high-pressure airflow.

The impeller consists of 30 to 50 blades to form multiple air cavities. After the air enters these air cavities, it is accelerated in both the axial and radial directions.

Driven by the rotating impeller, the air enters the outer side of the annular chamber and the next air cavity. This cycle forms a vortex or a stretched spring.

The speed energy continues to increase or is repeatedly generated, forming airflow at the suction and exhaust ports of the blower.

The large-scale use of high-pressure blowers, and various equipment has a standard process for their operation;

Through a large amount of experimental data, we know that the exhaust pressure (vacuum degree) of the high-pressure blower increases, the flow rate of the high-pressure blower decreases, the shaft power increases, the total efficiency curve is parabolic, and there is a peak point.

From the working curve of the high-pressure explosion-proof blower, we can see that the efficiency of a high-pressure blower is low under positive pressure air supply conditions, with a maximum efficiency of only 44%;

However the efficiency of a high-pressure blower is even lower under suction conditions, with a maximum efficiency of only 32%, so sometimes a high-pressure blower can be used as a rough vacuum generator.

Protective device of high-pressure blower:

No matter which brand of high-pressure blower, it needs two aspects of protection: one is pressure, and the other is dust.

For pressure, the pressure relief valve is often used. It is an unloading valve. When the operating pressure of the high-pressure blower exceeds the pressure set by the pressure relief valve, the pressure relief valve will automatically open to release the excess pressure, thereby protecting the high-pressure blower.

For dust, filters are often used.

Depending on the different use sites, it often uses filter elements with different filtration accuracy. Different filter elements have different maintenance methods and service life. You need to ask clearly when ordering.

On some special occasions, special protection is also required:

For example, when used in a sealed environment, attention should be paid to ventilation and heat dissipation;

When the ambient temperature (intake air temperature is relatively high), more attention should be paid to ventilation and heat dissipation, or a high-pressure blower with a higher intake air temperature should be selected (the maximum intake air temperature allowed by domestic high pressure is currently 200 degrees);

For some brands of high-pressure blowers, there may be their own usage suggestions. Before purchasing, you should have a more detailed understanding.

Maintenance system of high-pressure blowers:

1. The blower must be used and repaired by a dedicated person.

   
   

2. The blower is not allowed to run with a disease.

   
   

3. Regularly remove dust from the inside of the blower, especially dust, dirt, and other impurities on the impeller to prevent rust and imbalance.

   
   

4. The blower maintenance must emphasize the first power off and stop.

   
   

5. Regularly check the sensitivity of the thermometer and oil mark.

   
   

6. In addition to replacing the lubricating oil after each disassembly and repair, the lubricating oil should be replaced once every 3-6 months under normal circumstances.

2024-11-19 12:02