Add： No. 265 Juxiang Road, Jiaojiang District, Taizhou City, Zhejiang Province
Water ring vacuum pump In addition to pumping general gases, the main advantage is the ability to pump condensable gases such as water vapor. Due to the isothermal compression of the liquid ring pump, the pump can also absorb flammable, explosive and corrosive gases. The 2YK liquid ring vacuum pump is characterized by high vacuum and strong applicability. When an appropriate working medium is selected (sometimes the pumped medium can also be used as the working fluid), almost all industrial gases can be removed. The above various pumps operate smoothly and have low noise, which is 30% lower than that of water jet pumps and steam jet pumps. Therefore, liquid ring pumps are widely used in chemical, light industry, food, medicine, paper, and electric industries.
1, according to the difference in vacuum:
◎ Long-term operation in the range of 1.3×104~1×105 Pa (100～760 Torr), single-stage SK water ring vacuum pump is selected.
◎ Long-term operation in the range of 5×103~1.3×104Pa (40～100 Torr), using a two-stage 2YK water ring vacuum pump.
◎ Long-term operation in the range of 1×103~1.3×104Pa (8～40 Torr), 2YK type double-stage oil ring vacuum pump is selected.
2. The working medium can be selected:
◎ Normal temperature water, ≤ 15 ° C is the best, generally not higher than 40 ° C
◎ Transformer oil or other industrial oil with low viscosity and low saturated vapor pressure. The maximum applicable temperature is 60 °C. Such as the electrician industry vacuum drying.
◎Chemical liquid, directly select chemical raw materials, require liquids with low saturated vapor pressure, such as ethanolamine.
◎ In addition to normal temperature water, other working media should be equipped with gas-liquid separator, cooler, etc. The pump shaft dynamic seal should be machine-sealed. See the performance table for detailed performance parameters.
3. Axle seal selection:
◎ Packing seals are available for general use.
◎The machine seal should be selected when no leakage is required.
4, over-current parts material selection:
◎Besides the shaft, the other parts are cast iron or copper alloy, suitable for pumping non-corrosive gases.
◎ 304 and 316 stainless steel. Suitable for pumping certain corrosive gases.
◎ engineering plastics, suitable for pumping corrosive gases containing acid.
5. If you need to pump the gas while pumping the vacuum, the pressure of the exhaust port exceeds the atmospheric pressure, you can choose according to the following scheme:
◎ If the exhaust pressure is stronger than 0.15MPa, it should not be modified by vacuum pump. Special two-stage liquid ring compressor should be used. The supporting motor power should be increased, and a special gas-liquid separator and automatic drainage device should be provided.
◎ If the pressure of the exhaust port is higher than atmospheric pressure and lower than 0.15MPa, it can be modified into a liquid ring compressor by vacuum pump.
6, system configuration type
◎ When the discharge working fluid is not reused or only partially reused, an open circulation system is adopted.
◎ When the discharge working fluid must be reused and should not be discharged, a closed circulation system should be adopted.