What are the advantages of dry screw vacuum pumps in the field of vacuum drying?
Vacuum drying technology is also called analytical drying technology. When working, the material is placed in a negative pressure environment, and the material is heated to reach its boiling point under the negative pressure, or the material is cooled down to reach its boiling point. The melting point under negative pressure can effectively achieve the purpose of material drying.
As far as the current development situation is concerned, the development of vacuum drying technology in the drying industry has matured and plays an irreplaceable role in various industries, especially in the food production industry. In the drying of natural product extracts, it is often Because the multifunctional components of natural products cannot withstand excessive temperatures, vacuum drying technology has outstanding application advantages in this aspect.
The structure of the dry screw vacuum pump is a vacuum equipment that uses a pair of screws to perform synchronous high-speed reverse rotation in the pump casing to produce suction and exhaust effects. Due to the structural characteristics of the screw pump, when the pump is working, there is no frictional resistance between the screws, the overall operation is smooth, no lubricating oil is needed in the working chamber, and the noise is low.
Because of its unique structural characteristics, the dry screw vacuum pump has outstanding technical advantages in function that other vacuum pumps do not have.
Its advantages are mainly reflected in the following aspects:
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? The surface of the working chamber and screw rotor often has a layer of anti-corrosion coating, which is designed for harsh process environments and can greatly reduce the impact of the environment on vacuum drying technology.
? Gas does not need to be compressed in a dry screw pump, so condensable gas can be extracted without consuming oil, so there will be no oil leakage.
? The external structure of the dry screw pump is relatively simple and it is very convenient to maintain.
? The extracted gas will be directly discharged from the pump body without polluting the water and putting no pressure on the environment.
In vacuum drying, dry screw pumps have outstanding application advantages for complex working conditions where oil, water and particulate matter are mixed in the workpiece to be dried. As an alternative and upgraded product to traditional mechanical vacuum pumps, it has broad market application prospects.