Negative pressure Roots blower vacuum pump, also known as Roots vacuum pump, is a device that uses the working principle of Roots impeller to compress and extract gas medium inside the pump through the impeller, thereby achieving vacuum. The following is a detailed introduction to the vacuum pump of the negative pressure Roots blower:

1、 Working principle
The working principle of a negative pressure Roots vacuum pump mainly relies on two interlocked Roots impellers rotating at high speed inside a sealed pump body. These two impellers rotate in opposite directions, one clockwise and the other counterclockwise. During the rotation process, gas will enter the pump body from the inlet as the impeller rotates, and then be squeezed and compressed into axially moving gas, ultimately entering the outlet of the pump body and being discharged. When gas is compressed, the vacuum degree of the pump will increase accordingly. When the vacuum degree of the pump reaches a certain value, gas will not be able to enter the pump, thus achieving vacuum extraction.
2、 Product Features
1. Fast start-up and low power consumption: The vacuum pump of the negative pressure Roots blower starts quickly and consumes less power during operation, which helps reduce the operating costs for users.
2. Low operation and maintenance costs: The pump has a simple and compact structure, which is easy to maintain and repair, reducing maintenance costs for users.
3. High pumping speed and efficiency: The negative pressure Roots blower vacuum pump has a large pumping rate and high working efficiency, which can meet the needs of various application scenarios.
4. Not sensitive to the extracted gas: This pump is not sensitive to the small amount of water vapor and dust contained in the extracted gas, therefore it has high reliability and stability.
3、 Application Fields
The negative pressure Roots blower vacuum pump has been widely used in multiple fields due to its unique performance characteristics:
1. In the field of chemical industry, this pump is commonly used in processes such as vacuum distillation, vacuum drying, and vacuum crystallization to provide a stable vacuum environment for chemical production.
2. Metallurgical field: In the metallurgical industry, this pump is widely used in processes such as vacuum smelting and vacuum degassing to improve the quality and efficiency of metal smelting.
3. In the pharmaceutical industry, negative pressure Roots blowers and vacuum pumps are used for processes such as vacuum drying and concentration to ensure the purity and properties of drugs.
4. In the food industry, this pump is used in vacuum packaging, vacuum preservation and other processes to extend the shelf life of food and improve its quality.
4、 Maintenance and upkeep
In order to maintain the good performance and prolong the service life of the negative pressure Roots blower vacuum pump, users should regularly maintain and upkeep it. Here are some suggestions:
1. Regular inspection: Regularly check whether the fasteners of the pump body are loose, whether the bearings are well lubricated, and whether the blades are worn.
2. Cleaning and maintenance: Regularly clean the dust and dirt inside the pump body to maintain its cleanliness and hygiene.
3. Lubrication maintenance: According to the instructions, regularly add lubricating oil or grease to the bearings, gears, and other components of the pump.
4. Troubleshooting: Once a pump malfunction or abnormality is detected, it should be immediately shut down for inspection and troubleshooting.
In summary, the negative pressure Roots blower vacuum pump has been widely used in multiple fields due to its characteristics of stability and low maintenance cost. Users should understand their needs and budget when purchasing and using, and choose products from well-known brands. At the same time, regular maintenance and upkeep should be carried out to extend the service life.