The Dry Oil-Free Permanent Magnet Variable Frequency Screw Vacuum Pump, also known as a dry mechanical pump, is capable of starting evacuation from atmospheric pressure and directly discharging the pumped gas into the atmosphere. It operates without the presence of oil or other working fluids in the pump chamber. Additionally, its ultimate pressure is comparable to or approaches that of oil-sealed mechanical vacuum pumps.
1. A novel proprietary vacuum-specific sealing design enhances pump longevity and reduces maintenance costs.
2. Collaborative development of a food-grade coating solution across multiple units significantly minimizes gas loss, improves efficiency, and provides rust and corrosion resistance.
3. The dry and oil-free chamber design ensures stable operation at high pumping speeds, maintaining stability under varying working temperatures.
4. Primarily replacing water ring pumps, rotary vane pumps, and used as a fore pump for Roots pumps, this type of wholesale screw air compressor offers remarkable environmental benefits and energy efficiency.
Oil-Free Vacuum Pump: Relatively lower power, lower pressure, and moderate vacuum level with reduced noise. This type of China screw vacuum pump doesn't consume oil, and the blades or pistons don't directly contact the transported liquid. Typically lacks specialized cooling systems and shorter continuous operation time compared to micro oil injected screw vacuum pump.
Micro-Oil Vacuum Pump: Generally higher power, higher pressure, and superior vacuum level, accompanied by louder noise. Consumes oil, and the blades or pistons directly contact the transported liquid. Oil can mix with the transported liquid, leading to a certain degree of contamination. Oil serves lubrication and cooling purposes, allowing extended continuous operation.
1. Application in Solvent Recovery in the Pharmaceutical Industry
In the production of raw materials for pharmaceuticals using solvent crystallization processes, filtration, washing, and vacuum drying are required after crystallization. The material processed by air compressor in pharmaceutical industry usually has a moisture content of around 20%, and heating temperature cannot exceed 80°C. After drying, the moisture content of the raw material should be below 0.5%. To remove solvents from the material, the pressure inside the drying vessel must be lower than the solvent's saturated vapor pressure at the drying temperature. Typically, drying is performed under medium vacuum pressure conditions of 0.1~50Pa.
2. Application in Gasoline Vapor Recovery in the Petrochemical Industry
Oil and gas recovery systems employ active adsorption to separate hydrocarbon components from air to meet emission standards. The regeneration of activated carbon involves vacuum desorption to enable reuse. Vacuum-desorbed oil and gas are transformed into gasoline through the method of gasoline spray absorption, facilitating their recovery.
